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Gs Yuasa International Ltd patents


Recent patent applications related to Gs Yuasa International Ltd. Gs Yuasa International Ltd is listed as an Agent/Assignee. Note: Gs Yuasa International Ltd may have other listings under different names/spellings. We're not affiliated with Gs Yuasa International Ltd, we're just tracking patents.

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Energy storage apparatus

An energy storage apparatus includes an energy storage device including an electrode terminal, an outer housing containing the energy storage device, an outer electrode attached to an outside of the outer housing, an electrical device disposed inside the outer housing, a first electrical conductor connecting the outer electrode and the electrical device, and a second electrical conductor connecting the electrical device and the electrode terminal. In a plane along a surface of the energy storage device, the electrical device is disposed between the electrode terminal and the outer electrode.. ... Gs Yuasa International Ltd

Energy storage device

An energy storage device includes: an electrode assembly; a container that includes a wall portion and accommodates the electrode assembly; a first conductive member; a second conductive member electrically connected to the electrode assembly and connected to the first conductive member and is arranged to pass through the wall portion; and a sealing member that is nonmetallic and disposed between the first conductive member and the second conductive member. The first conductive member and the second conductive member are in direct contact and are made of mutually different metal materials. ... Gs Yuasa International Ltd

Lead-acid battery and method for producing lead-acid battery

A negative electrode material of a negative electrode plate of a lead-acid battery includes an organic expander having a s element content of 3000 μmol/g or more.. . ... Gs Yuasa International Ltd

Negative electrode for nonaqueous electrolyte energy storage device

Provided is a negative electrode for a nonaqueous-electrolyte energy storage device containing graphite, non-graphitizable carbon, and a binder. An average particle size of the non-graphitizable carbon is 8 μm or less. ... Gs Yuasa International Ltd

Positive active material for nonaqueous electrolyte secondary battery, method for producing same, electrode for nonaqueous electrolyte secondary battery, and nonaqueous electrolyte secondary battery

Provided is a positive active material for a nonaqueous electrolyte secondary battery which includes a lithium transition metal composite oxide. A molar ratio (li/me) of li and a transition metal (me) that form the lithium transition metal composite oxide is more than 1. ... Gs Yuasa International Ltd

Energy storage apparatus

An energy storage apparatus including: an outer case having a bottom wall and a side wall; an energy storage device; an insulating member disposed at a position where the energy storage device is sandwiched between the bottom wall and the insulating member; a first adhesive layer which makes the insulating member and the energy storage device adhere to each other; and a second adhesive layer which makes the insulating member and the side wall adhere to each other.. . ... Gs Yuasa International Ltd

Energy storage apparatus

An energy storage apparatus includes: an outer case formed of a body, and a lid body which covers an opening of the body; an energy storage device which is accommodated in the outer case; and a handle which is mounted on the lid body. The lid body has a first surface, and a second surface which is disposed adjacently to the first surface. ... Gs Yuasa International Ltd

Energy storage apparatus for vehicle and vehicle

An energy storage apparatus for a vehicle, the energy storage apparatus including: an energy storage device; and a cut-off device which cuts off a current to/from the energy storage device when a voltage or a capacity of the energy storage device is lower than a threshold. The threshold for the cut-off device is different between a state in which the vehicle is traveling and a state in which the vehicle is being parked.. ... Gs Yuasa International Ltd

Energy storage device

An energy storage device includes a first locking portion for locking a rotation of a positive electrode current collecting member about a shaft portion of a positive electrode terminal with respect to a lower insulating member. The first locking portion includes: a recessed portion formed on the lower insulating member; and a projecting portion formed on the positive electrode current collecting member. ... Gs Yuasa International Ltd

Energy storage apparatus, energy storage system, and method of determining state of energy storage apparatus

An energy storage apparatus includes a plurality of energy storage devices connected in series, a voltage detection unit configured to detect voltage of each of the energy storage devices, and a monitoring unit configured to monitor the plurality of energy storage devices. The monitoring unit determines a state of the energy storage apparatus in accordance with average cell voltage or an average soc of the plurality of energy storage devices and minimum cell voltage of the plurality of energy storage devices.. ... Gs Yuasa International Ltd

Power supply device for vehicle

A power supply device for a vehicle includes: a first energy storage device having a first energy storage element; a second energy storage device having a second energy storage element; a switch which switches between a state in which the first energy storage device and the second energy storage device are connected in parallel and a state in which the first energy storage device and the second energy storage device are separated from each other; and a switch controller. Each of the first energy storage element and the second energy storage element is an energy storage element having an soc-ocv characteristic having a flat region thereon, and the switch controller switches the switch from an off-state to an on-state when each of the first energy storage element and the second energy storage element is in the flat region of the soc-ocv characteristic.. ... Gs Yuasa International Ltd

Nonaqueous electrolyte secondary battery and method for producing nonaqueous electrolyte secondary battery

A nonaqueous electrolyte secondary battery includes a positive electrode, a negative electrode, and a nonaqueous electrolyte. A positive electrode charge potential is 3.7 v or less with respect to a lithium metal potential. ... Gs Yuasa International Ltd

Energy storage apparatus

An energy storage apparatus includes an energy storage device, a circuit board, a first outer case, and a metal bar which electrically connects an external conductive member and the circuit board to each other, the metal bar is integrally formed with the first outer case, and an end part of the metal bar which is exposed inward from the first outer case is inserted into a first connector of the circuit board.. . ... Gs Yuasa International Ltd

Lead-acid battery

A lead-acid battery includes a negative electrode plate that comprises: a negative electrode material which has a density of 2.7 g/cm3 or more and 3.8 g/cm3 or less and contains an organic expander having an s element content of 3900 μmol/g or more; and a current collector.. . ... Gs Yuasa International Ltd

03/22/18 / #20180080996

Deterioration detector for non-aqueous electrolyte power storage element, power storage device, deterioration detection system for non-aqueous electrolyte power storage element, and deterioration detection method for non-aqueous electrolyte power storage element

According to an embodiment of the present invention, deterioration of a non-aqueous electrolyte power storage element is detected based on a first increase rate and a second increase rate, the first increase rate being an increase rate of a direct current resistance value obtained by measuring the non-aqueous electrolyte power storage element over a first time period, the second increase rate being an increase rate of a direct current resistance value obtained by measuring the non-aqueous electrolyte power storage element over a second time period that is longer than the first time period.. . ... Gs Yuasa International Ltd

03/08/18 / #20180069274

Monitoring apparatus for energy storage device, energy storage apparatus, and a method of monitoring energy storage device

A monitoring apparatus for an energy storage device provided at a movable body and electrically connected to a load of the movable body via a switch, includes a monitoring unit supplied with power from the energy storage device. The monitoring unit executes monitoring operation of bringing the switch from a closed state into an opened state under a condition that the energy storage device has voltage not more than a discharge voltage threshold, and bringing the switch from the opened state into the closed state under a condition that the switch is in the opened state and the energy storage device satisfies a predetermined discharge recovery condition, and decreases power consumption by extending an interval of the monitoring operation when the load is under suspension while the switch is in the opened state, in comparison to a case where the load is in operation.. ... Gs Yuasa International Ltd

03/08/18 / #20180069227

Energy storage device

An energy storage device including: an electrode assembly having a body portion and a first tab portion projecting from the body portion; and a container housing the electrode assembly, wherein a first current collector electrically connected to the first tab portion or the first tab portion, and the container have a swaged joint portion having a concavo-convex structure projecting toward the other side from one side.. . ... Gs Yuasa International Ltd

03/08/18 / #20180069226

Electrochemical device

An electrochemical device includes a power generating element including a main portion and a terminal portion, the main portion including an electrode prepared by forming an active material layer on a metal foil surface, the terminal portion being provided on a side of the main portion, the terminal portion including layers of metal foils, an outer package including a container and a lid, the container including a side wall and a bottom wall and housing the power generating element, the lid being formed with a terminal, a current collector including a leg portion to which the layers of metal foils are attached, and a movement restricting member being arranged between the terminal portion of the power generating element and an inner surface of the side wall opposite the terminal portion. The movement restricting member includes a holding portion.. ... Gs Yuasa International Ltd

03/01/18 / #20180062371

Overcurrent detection device, energy storage apparatus, and current detection method

An overcurrent detection device including: a current detection resistor that is connected in series to a main circuit and is configured to cause a potential difference at both ends according to a current flowing through the main circuit; a current detection circuit that includes a pair of connection portions and is configured to detect a potential difference between the pair of connection portions; a pair of voltage detection lines connecting the both ends of the current detection resistor to the pair of connection portions in the current detection circuit; and an erroneous detection prevention unit configured to prevent an increase in the potential difference between the pair of connection portions when at least any one of the pair of voltage detection lines has a connection failure.. . ... Gs Yuasa International Ltd

02/22/18 / #20180053971

Charge voltage controller for energy storage device, energy storage apparatus, battery charger for energy storage device, and charging method for energy storage device

An embodiment provides a charge voltage controller for a chargeable and dischargeable energy storage device including an electrode assembly having a positive electrode and a negative electrode, the charge voltage controller configured to control upper limit voltage applied to charge the energy storage device in accordance with at least one of charge time of the energy storage device, current inputted to the energy storage device, temperature of the energy storage device, and a state of charge of the energy storage device, to inhibit potential of the negative electrode from being lower than deposition potential at which metal ions transmitting and receiving an electric charge between the positive electrode and the negative electrode are deposited at the negative electrode.. . ... Gs Yuasa International Ltd

02/15/18 / #20180048165

Energy storage apparatus and charge control method for the same

An energy storage apparatus includes: an energy storage device; a voltage dropper configured to drop a charge voltage for the energy storage device; a current switcher connected in parallel with the voltage dropper; a voltage detection unit configured to detect a voltage of the energy storage device; and a controller. When the voltage of the energy storage device exceeds a predetermined value, the controller causes the current switcher to switch a path of a charge current to the energy storage device to a path through the voltage dropper.. ... Gs Yuasa International Ltd

02/08/18 / #20180041055

Energy storage apparatus, vehicle, internal short-circuit detection controlling method for energy storage apparatus, and charge controlling method for energy storage apparatus

An energy storage apparatus includes: an energy storage device; a voltage detecting unit for detecting a voltage of the energy storage device; an energization control unit for controlling energization of the energy storage device; and a control unit. The control unit performs a short-circuit detecting process for detecting an internal short-circuit based on a change in state of the energy storage device with charging of the energy storage device.. ... Gs Yuasa International Ltd

02/08/18 / #20180041054

Energy storage apparatus for engine start-up, method for controlling the same, and vehicle

An energy storage apparatus for engine start-up includes: an energy storage device, a first switch provided in a first energizing path to the energy storage device, a step-down circuit provided in a second energizing path to the energy storage device, and a controller. The controller turns the first switch on to discharge through the first energizing path at engine start-up, and turns the first switch off to select the second energizing path if an output voltage of a vehicle generator is higher than a predetermined voltage to cause the output voltage of the vehicle generator to be stepped down with the step-down circuit to charge the energy storage device.. ... Gs Yuasa International Ltd

02/08/18 / #20180041052

Power storage apparatus, method for controlling power storage apparatus, and vehicle

A power storage apparatus includes a plurality of power storage devices, a switch provided on a current-carrying path to the plurality of power storage devices, a voltage detecting unit that detects respective voltages of the power storage devices, and a control unit. The control unit switches a duty ratio of the switch so as to prevent or delay the voltages of the power storage devices from reaching an upper limit voltage during the charge.. ... Gs Yuasa International Ltd

02/08/18 / #20180040872

Energy storage apparatus

An energy storage apparatus includes: energy storage devices each of which has a container and an electrode terminal; a connecting member which is connected to the electrode terminal of one of the energy storage devices and is connected to an external conductive member; and a restricting portion which is in contact with the container, which said one energy storage device includes, and is in contact with the connecting member to restrict the connecting member from moving by an external force.. . ... Gs Yuasa International Ltd

02/01/18 / #20180034098

Energy storage device, energy storage apparatus, and automobile

The energy storage device of the present invention includes: a negative electrode including a negative composite layer and a composite layer non-form ing portion on both surfaces of a negative electrode current collecting foil respectively; a positive electrode including a positive composite layer on both surfaces of a positive electrode current collecting foil respectively; and a separator including an insulation layer which faces the positive electrode and is interposed between the negative electrode and the positive electrode. The negative electrode, the separator and the positive electrode are stacked in a first direction. ... Gs Yuasa International Ltd

01/25/18 / #20180026310

Lead acid battery

A lead acid battery including: a positive electrode plate including a positive electrode grid and a positive electrode active material; a negative electrode plate including a negative electrode grid and a negative electrode active material; an electrode plate group including the positive electrode plate, the negative electrode plate, and a separator interposed between the positive electrode plate and the negative electrode plate; a battery container including a plurality of cell chambers each accommodating the electrode plate group and an electrolyte; and a lid sealing an opening of the battery container. A ratio p/n of mass p of the positive electrode active material to mass n of the negative electrode active material is 1.25 or more and 1.65 or less. ... Gs Yuasa International Ltd

01/25/18 / #20180024196

Power supply protective device, power supply device and switch failure diagnosing method

A power supply protective device, when obtaining an open voltage when a second switch is brought into a closed state and a first switch is brought into an open state during discharging of a power supply, and obtaining a close voltage when the second switch is brought into the closed state and the first switch is brought into the closed state during discharging of the power supply, diagnoses the first switch as having a failure or not on the basis of the open voltage and the close voltage. When executing first a close instruction to the first switch and the second switch, if a voltage difference is less than a first threshold voltage, the first switch is determined to have no open failure, and/or when not less than a second threshold voltage, the second switch is determined to have no open failure.. ... Gs Yuasa International Ltd

01/11/18 / #20180013123

Energy storage device

An energy storage device includes: an electrode assembly; a positive electrode current collector and a negative electrode current collector connected to the electrode assembly; and a container configured to house the electrode assembly and the positive electrode current collector and the negative electrode current collector, wherein the container has recessed portions, a connecting portion of the positive electrode current collector and a connecting portion of the negative electrode current collector respectively connected to the electrode assembly are housed in the recessed portions, respectively, the electrode assembly has a tab portion which includes a connecting portion connected to the positive electrode current collector and a tab portion which includes a connecting portion connected to the negative electrode current collector, and the tab portions have a bent portion respectively.. . ... Gs Yuasa International Ltd

01/11/18 / #20180013103

Lid for storage battery, injection molding method of the same lid, storage battery with the same lid, and terminal section for storage battery

An object of the invention is to provide a lid for storage battery, an injection molding method of the lid, a storage battery with the lid, and a terminal section for storage battery, which can save trouble of inserting a nut into a cavity portion of a terminal, and can prevent falling of the nut at the time of connection of an external leading wire. In a lid for storage battery in which a terminal section for storage battery 8 made up of a terminal 4 having a cavity portion, a bushing 6, and a conductive portion 7 joining both is insert-molded in a lid made of synthetic resin, and a storage battery with the lid for storage battery, an anchor portion 4t is projected at a location excluding at least a central portion of a bottom portion 4f of the terminal 4, and a nut is inserted into the cavity portion of the terminal to be fixed. ... Gs Yuasa International Ltd

01/04/18 / #20180006276

Method for manufacturing energy storage device and apparatus for manufacturing energy storage device

. . In a method for manufacturing an energy storage device by applying welding to a container of the energy storage device, the method includes: arranging a jig on which wall surfaces are formed between two parts to be welded to which welding is applied; and welding the two parts to be welded while supplying a shield gas to the two parts to be welded from two different directions corresponding to the two parts to be welded.. . ... Gs Yuasa International Ltd

12/28/17 / #20170373303

Energy storage device

An energy storage device includes: a casing 30 having an opening; an energy storage element 20 housed in the casing 30; a lid plate 40 mounted in the opening of the casing 30; a positive electrode terminal member 100 and a negative electrode terminal member 71 integrally fixed to the lid plate 40 in an insulation state by an insulating synthetic resin; a positive electrode current collector 60p configured to electrically connect the energy storage element 20 and the positive electrode terminal member 100 to each other; and a negative electrode current collector 60n configured to electrically connect the energy storage element 20 and the negative electrode terminal member 71 to each other, wherein an easy-to-break portion 65 is formed on at least either one of the positive electrode terminal member 100 or the positive electrode current collector 60p.. . ... Gs Yuasa International Ltd

12/28/17 / #20170371000

Management device for secondary battery, and method of managing secondary battery

A management device manages a secondary battery which includes a positive electrode having an active material with a characteristic where a potential flat portion exists in a relationship between a capacity and a potential. The management device includes a management unit which detects an occurrence of temporary degradation of the secondary battery when an soc correlation associated value which is associated with an soc of the secondary battery is acquired and the soc which corresponds to the acquired soc correlation associated value is equal to or less than a preset prescribed soc or when a state value relating to a voltage of the secondary battery is acquired and a magnitude relationship between the acquired state value relating to the voltage of the secondary battery and a preset threshold value satisfies a predetermined condition.. ... Gs Yuasa International Ltd

12/21/17 / #20170365839

Energy storage device

An energy storage device (battery) includes an electrode assembly having current collecting tabs, each of which is formed of a plurality of projecting portions, projecting from a first straight line portion on one side in a stacking direction of electrode sheets. The electrode assembly is housed in a case (exterior body). ... Gs Yuasa International Ltd

12/14/17 / #20170358790

Energy storage device

An energy storage device includes a positive electrode terminal, a first electrode body and a second electrode body, and a positive electrode current collector electrically connecting the positive electrode terminal and the first and second electrode bodies. The positive electrode current collector includes a terminal connection portion electrically connected to the positive electrode terminal, inner electrode body connection portions connected to the first and second electrode bodies, and a coupling portion extending from an end of the terminal connection portion and coupling the terminal connection portion and the inner electrode body connection portions. ... Gs Yuasa International Ltd

11/30/17 / #20170346049

Energy storage device, energy storage apparatus and method of manufacturing energy storage device

Provided is an energy storage device which includes: an electrode assembly where electrodes are layered to each other; and current collector joined to the layered electrodes in a state where the current collector overlaps with the electrodes. The electrode and the current collector are welded to each other or are joined to each other by ultrasonic bonding at a first joint portion. ... Gs Yuasa International Ltd

11/16/17 / #20170328957

Energy storage device state estimation device and energy storage device state estimation method

Provided is an energy storage device state estimation device (100) for estimating a state of an energy storage device (200) at a predetermined point of time. The energy storage device state estimation device (100) includes: a history acquisition part (110) configured to acquire a charge-discharge history of the energy storage device (200) up to the predetermined point of time; a deterioration value estimation part (130) configured to estimate a time dependent deterioration value and a working electricity dependent deterioration value of the energy storage device (200) at the predetermined point of time using information about time dependent deterioration and information about working electricity dependent deterioration corresponding to the charge-discharge history; and a state estimation part (140) configured to estimate a state of the energy storage device (200) at the predetermined point of time using the time dependent deterioration value and the working electricity dependent deterioration value.. ... Gs Yuasa International Ltd

10/26/17 / #20170310150

Electric energy management system, management device for enrgy storage device, energy storage apparatus and electric energy management method for vehicle

An electric energy management system includes: an energy storage device; a generator connected to the energy storage device; a load which is connected to the energy storage device and to the generator and is operated with a supply of an electric energy from the energy storage device and the generator; an electric energy control part configured to control the supply of electric energy to the load from the generator; a detection part configured to detect an abnormal state of the energy storage device; a current cutoff part configured to cut off an electric current between the energy storage device and the load; and a control part configured to issue an advance notice to cut off the electric current to the electric energy control part after the abnormal state is detected by the detection part and before the electric current is cut off by the current cutoff part. The electric energy control part is configured to control the supply of electric energy to the load from the generator based on the advance notice.. ... Gs Yuasa International Ltd

10/26/17 / #20170309897

Lead-acid battery

Provided is a lead-acid battery including a negative electrode plate and a positive electrode plate. The negative electrode plate includes a negative electrode material containing graphite or carbon fiber, and the positive electrode plate includes a positive electrode material containing antimony.. ... Gs Yuasa International Ltd

10/26/17 / #20170309886

Energy storage device

An energy storage device comprising: electrode terminals; an electrode assembly formed by stacking a positive electrode plate and a negative electrode plate; and current collectors which connect the electrode terminals and the electrode assembly to each other, wherein at least one of the positive electrode plate and the negative electrode plate has a plurality of tab groups which are joined to the current collector, each tab group being formed by stacking one or more tabs projecting toward the electrode terminal, and at least one tab group among the tab groups and the current collector has a swaged joint portion, the swaged joint portion projecting from either one of the tab group or the current collector to the other of the tab group or the current collector.. . ... Gs Yuasa International Ltd

10/26/17 / #20170309885

Energy storage device

An energy storage device includes a positive electrode current collector and a negative electrode current collector which respectively have electric conductivity and are joined to each other, and cover members. The energy storage device includes swaged joint portions which join the positive electrode current collector and the cover members to each other, and are engaged with each other by fitting engagement by a concavo-convex fitting engagement structure which projects from the positive electrode current collector toward the cover members, and swaged joint portions which join the negative electrode current collector and the cover members to each other and, are engaged with each other by fitting engagement by a concavo-convex fitting engagement structure which projects from the negative electrode current collector toward the cover members. ... Gs Yuasa International Ltd

10/05/17 / #20170288425

Energy storage device management device, energy storage apparatus and energy storage system

Provided is an energy storage device management device which includes a controller configured to decide a charge voltage to be applied to a plurality of energy storage devices connected in series, wherein the controller is configured to perform deciding the charge voltage based on a difference in charge amount or a voltage difference between the energy storage devices.. . ... Gs Yuasa International Ltd

10/05/17 / #20170285110

Estimation device and estimation method

Provided is an estimation device for estimating an actual capacity of an energy storage device or a total reduction amount of the actual capacity. The estimation device includes a processor which is configured to calculate the actual capacity of the energy storage device or the total reduction amount of the actual capacity based on approximation data where a capacity change curve indicative of a transition of the actual capacity or a transition of the total reduction amount of the actual capacity with respect to an elapsed time is approximated by a plurality of straight lines.. ... Gs Yuasa International Ltd

09/28/17 / #20170279100

Energy storage apparatus

An energy storage apparatus includes one or more energy storage devices, and an outer housing that houses the one or more energy storage devices. The outer housing includes an outer housing main body, a cover that closes an opening of the outer housing main body, an outer terminal disposed on the cover, and a communication part defining a passageway allowing a communication between an interior and an exterior of the outer housing. ... Gs Yuasa International Ltd

09/14/17 / #20170263913

Lead-acid battery

A lead-acid battery includes an electrode plate assembly, a battery case, a positive electrode strap, a negative electrode strap, a positive electrode post, a negative electrode post, a cover, and an electrolyte solution. A negative electrode bushing provided in the cover and the negative electrode post together constitute a negative electrode terminal. ... Gs Yuasa International Ltd

09/07/17 / #20170254856

Monitoring device for energy storage device, energy storage device module, and method of estimating soc

A monitoring device for an energy storage device mounted on a vehicle includes: a memory; and a processor, wherein the memory is configured to store at least one of data on an estimated value of a parking-time discharge current, which the energy storage device discharges during parking, and data for calculating the estimated value of the parking-time discharge current. The processor is configured to perform first soc estimation processing in which an soc of the energy storage device is estimated by integrating estimated values of the parking-time discharge current based on the data stored in the memory when the vehicle is in a parking state.. ... Gs Yuasa International Ltd

09/07/17 / #20170253128

Electric storage apparatus

A power control method of an electric storage apparatus that includes an output terminal, an electric storage device connected to the output terminal via a power supply route in the electric storage apparatus, and a monitoring apparatus including a detector, a communication unit, and a controller, includes detecting a variation value corresponding to an amount of charge of the electric storage device, shutting down the power supply route in the electric storage apparatus, which connects the electric storage device to the output terminal, and causing the communication unit to receives an input signal from outside.. . ... Gs Yuasa International Ltd

08/24/17 / #20170244139

Energy storage apparatus and method of manufacturing energy storage apparatus

An energy storage apparatus includes: a plurality of energy storage devices; a spacer unit having one or more spacers disposed between the energy storage devices or on sides of the energy storage devices; and a plurality of members disposed above the energy storage devices and the spacer unit (a bus bar frame, a heat shielding plate, a holder), wherein the spacer unit has a plurality of locking portions, the locking portions being configured to lock the members, respectively.. . ... Gs Yuasa International Ltd

08/24/17 / #20170244081

Energy storage apparatus

An energy storage apparatus includes an outer case, and an energy storage device housed in an inside of the outer case. The outer case includes a ventilation chamber which makes the inside and an outside of the outer case communicate with each other. ... Gs Yuasa International Ltd

08/17/17 / #20170237057

Energy storage apparatus and energy storage apparatus checking method

An energy storage apparatus provided with an energy storage device is provided with an electrode terminal disposed on the energy storage device, and a bus bar placed on a surface of the electrode terminal and connected to the electrode terminal. The bus bar includes a plurality of opening portions formed such that the surface of the electrode terminal is exposed.. ... Gs Yuasa International Ltd

08/10/17 / #20170229711

Positive electrode plate for nonaqueous electrolyte energy storage device, and nonaqueous electrolyte energy storage device

A purpose of the present invention is to provide a technique for still further improving safety by increasing the resistance change ratio in a high-temperature range in a nonaqueous electrolyte energy storage device, the internal resistance of which increases with an increase in internal temperature. In a positive electrode plate for nonaqueous electrolyte energy storage device, an intermediate layer containing an electrically conducting agent and a binder is provided between a positive electrode current collector and a positive composite layer, and as the binder in the intermediate layer, one having a mass average molecular weight larger than that of a binder in the positive composite layer is used. ... Gs Yuasa International Ltd

07/27/17 / #20170214257

Battery apparatus, vehicle, battery management program, and management method of battery apparatus

A battery apparatus disclosed in the present specification includes: an energy storage device that supplies power to a vehicle load mounted on a vehicle; a current interrupt unit that causes the energy storage device and the vehicle load to be in a conduction state or in an interruption state; a parallel circuit connected in parallel with the current interrupt device and including a diode that causes a voltage drop when current flows therethrough; and a control unit, wherein a cpu in the control unit executes an interruption process for switching the current interrupt device to an interruption state to detect a voltage between both ends of the current interrupt device, when a high load that is to be activated by supply of power exceeding maximum allowable current of the diode is not activated.. . ... Gs Yuasa International Ltd

07/27/17 / #20170214037

Negative electrode for nonaqueous electrolyte energy storage device, nonaqueous electrolyte energy storage device, and energy storage apparatus

In order to improve the insulating property of a covering layer containing a filler disposed on at least a part of a surface of a negative composite layer, there is provided a negative electrode for a nonaqueous electrolyte energy storage device, including a negative electrode including a current collector, a negative composite layer containing a negative active material, and a covering layer containing a filler on at least a part of a surface of the negative composite layer, wherein in x-ray diffraction (xrd) measurement of the negative electrode, a peak intensity ratio (i(002)/i(100)) between a diffraction peak attributed to (002) plane of the negative active material and a diffraction peak attributed to (100) plane of the negative active material is 219 or more and 862 or less.. . ... Gs Yuasa International Ltd

07/27/17 / #20170214030

Energy storage device, energy storage apparatus and method of manufacturing energy storage device

A first projecting portion is disposed between a head portion of an external terminal and a gasket body of a gasket, the first projecting portion projecting toward the gasket body from a first opposedly-facing surface which opposedly faces a case of the head portion, the first projecting portion surrounding the shaft portion, the first projecting portion having a pressing surface which directly or indirectly presses the gasket body in a projecting direction of the first projecting portion. The gasket has the second and third opposedly-facing surfaces, the second opposedly-facing surface opposedly facing the head portion, the third opposedly-facing surface opposedly facing the case. ... Gs Yuasa International Ltd

07/27/17 / #20170212171

State estimation device, energy storage module, vehicle, and state estimation method

A state estimation device includes: a voltage detecting unit that detects voltages of energy storage devices; and an estimating unit that estimates a charge amount difference between at least two of the energy storage devices. At a reference time point t0 during constant current charging, the estimating unit performs: specific voltage setting for setting, as a specific voltage v0, a voltage of a low-voltage energy storage device at the reference time point t0; time obtaining for obtaining a time point at which a voltage of a high-voltage energy storage device reaches the specific voltage v0; and charge amount difference estimating for estimating the charge amount difference between the at least two energy storage devices based on the reference time point t0, the time point obtained in the time obtaining process, and a current flowing through the plurality of energy storage devices during the constant current charging.. ... Gs Yuasa International Ltd

07/27/17 / #20170210311

Energy storage apparatus and method for determining misuse of energy storage device

An energy storage apparatus includes: an energy storage device which is connected to a vehicle load and a vehicle power generator; a current interrupt device that causes the energy storage device and the vehicle load as well as the energy storage device and the vehicle power generator to be in a conduction state or in an interruption state; a voltage detection unit that detects voltage of the energy storage device; and a control unit. The control unit executes: a switching instruction process in which, when determining that the electric storage device will reach an overcharge state on the basis of the voltage, the control unit issues an interruption switching instruction to the current interrupt device; and an interruption maintaining process in which, when the number of times of the switching instruction process exceeds a predetermined value, the control unit issues an instruction to maintain the interruption state.. ... Gs Yuasa International Ltd

07/20/17 / #20170207494

Negative electrode plate, energy storage device, method for manufacturing negative electrode plate, and method for manufacturing energy storage device

Provided is a negative electrode plate in an electrode assembly of an energy storage device. The negative electrode plate includes: a negative base material layer; and negative active material layers formed on the negative base material layer in a state where the negative active material layers are exposed partially or wholly, wherein a peripheral edge portion of the negative electrode plate includes: a layer-non-formed portion that is disposed on a first side of the negative electrode plate, which is connected to a negative electrode current collector of the energy storage device and on which the negative active material layers are not formed; and a layer-non-exposed portion that is disposed on a second side of the negative electrode plate, which differs from the first side and on which the negative active material layers are not exposed.. ... Gs Yuasa International Ltd

07/20/17 / #20170207445

Nonaqueous electrolyte secondary battery

The present invention aims at improving both of power characteristics and a capacity retention ratio of a nonaqueous electrolyte secondary battery. A nonaqueous electrolyte secondary battery according to the present invention is characterized in that a negative electrode contains an aqueous binder as a binder and amorphous carbon as a negative active material, and an average particle size of the amorphous carbon is set to a specific average particle size, which is 7 μm or less. ... Gs Yuasa International Ltd

07/20/17 / #20170207428

Energy storage apparatus and method of manufacturing the same

An energy storage apparatus includes an energy storage device, an outer covering. The energy storage apparatus further includes an external connection terminal having a connecting portion to which external equipment is connected; and a conductive member assembled to the external connection terminal, and electrically connected to the energy storage device. ... Gs Yuasa International Ltd

06/29/17 / #20170187009

Battery

A battery includes: a cylindrical battery case; and an electrode body disposed in the battery case, and including a positive plate, a negative plate, and a separator disposed between the positive plate and the negative plate. A spacer formed of a dense body and an electrolyte storage space storing an electrolyte are provided between the electrode body and the battery case on one end or both ends of the battery case in an axial direction of the electrode body.. ... Gs Yuasa International Ltd

05/04/17 / #20170123013

Post-deterioration performance estimating apparatus and post-deterioration performance estimating method for energy storage device, and energy storage system

A post-deterioration performance estimating apparatus wherein a post-deterioration performance value indicates performance of an energy storage device. The apparatus includes a post-deterioration performance estimator is configured to electronically estimate the post-deterioration performance value at a deterioration point using (1) a relation between a cumulative operating period and a resistance value, (2) a relation between the resistance value and energy storage capacity, and (3) the cumulative operating period at the deterioration point. ... Gs Yuasa International Ltd

04/27/17 / #20170117544

Positive active material for nonaqueous electrolyte secondary battery, method of manufacturing the positive active material, electrode for nonaqueous electrolyte secondary battery, nonaqueous electrolyte secondary battery and method of manufacturing the secondary battery

An object of the present invention is to provide a positive active material for a nonaqueous electrolyte secondary battery which has a large discharge capacity and is superior in charge-discharge cycle performance, initial efficiency and high rate discharge performance, and a nonaqueous electrolyte secondary battery using the positive active material. The present invention pertains to a positive active material for a nonaqueous electrolyte secondary battery containing a lithium transition metal composite oxide which has a crystal structure of an α-nafeo2 type, is represented by a compositional formula li1+αme1−αo2 (me is a transition metal element including co, ni and mn, α>0), and has a molar ratio li/me of li to the transition metal element me of 1.2 to 1.6, wherein a molar ratio co/me of co in the transition metal element me is 0.02 to 0.23, a molar ratio mn/me of mn in the transition metal element me is 0.62 to 0.72, and the lithium transition metal composite oxide is observed as a single phase attributed to a space group r3-m on an x-ray diffraction chart when it is electrochemically oxidized up to a potential of 5.0 v (vs. ... Gs Yuasa International Ltd

04/13/17 / #20170102436

Performance deterioration detecting apparatus and performance deterioration detecting method for energy storage device, and energy storage system

A performance deterioration detecting apparatus configured to detect a performance deterioration start state of an energy storage device. The performance deterioration start state is an initial state of deterioration in performance of the energy storage device. ... Gs Yuasa International Ltd

03/30/17 / #20170092978

Electric storage device, manufacturing method of electric storage device, and bus bar used for electric storage device

An electric storage device includes an electric storage element including an external terminal, and a bus bar connected to the external terminal. The bus bar includes a thin-walled portion and a thick-walled portion, the thin-walled portion being located around outer edges of the bus bar. ... Gs Yuasa International Ltd

03/30/17 / #20170092934

Lead-acid battery

A negative electrode material contains an organic anti-shrink agent which is soluble in water, and the organic anti-shrink agent, when extracted from the negative electrode material with an alkali aqueous solution, has an average particle size of not less than 0.1 μm and not more than 9 μm in sulfuric acid having a specific gravity of 1.25. A lead-acid battery includes a negative electrode plate containing an organic anti-shrink agent having a s element content of 4000 μmol/g or more. ... Gs Yuasa International Ltd

03/30/17 / #20170092911

Energy storage apparatus and manufacturing method of energy storage apparatus

An energy storage apparatus includes an energy storage device and an outer case. The outer case includes a side wall portion disposed in an opposedly facing manner with a side surface of the energy storage device and a high rigidity member having higher rigidity than the side wall portion, the high rigidity member being disposed between the side wall portion and the energy storage device and mounted on the side wall portion.. ... Gs Yuasa International Ltd

03/30/17 / #20170092905

Electric storage device, electric storage apparatus, method for producing electric storage device, and method for producing cover plate

An electric storage device includes an electrode assembly including a positive electrode plate and a negative electrode plate that are insulated from each other, and a case that houses the electrode assembly. The case includes a case body including an opening, and a cover plate that is placed on an opening edge of the opening of the case body so as to cover the opening. ... Gs Yuasa International Ltd

03/30/17 / #20170092901

Energy storage device and energy storage apparatus

An energy storage device includes a metal case which houses an electrode assembly therein, and an insulation sheet mounted on a portion of an outer surface of the case. The case includes a projecting portion which extends in a thickness direction of the insulation sheet along an edge surface of at least a portion of the insulation sheet, and a distal end of the projecting portion projects from the insulation sheet.. ... Gs Yuasa International Ltd

03/23/17 / #20170084945

Electrode plate, layered electrode group, and battery

A layered electrode group according to the present invention includes a positive electrode plate, a negative electrode plate, and a separator. The positive electrode plate is formed into a substantial u-shape by disposing two active material retaining portions retaining the positive active material opposite to each other. ... Gs Yuasa International Ltd

03/23/17 / #20170084886

Energy storage apparatus

An energy storage apparatus includes: an energy storage device; an outer covering; an end plate which is disposed on a side of the energy storage device and is fixed to the outer covering; and a binding member which is mounted on the end plate and applies a binding force to the energy storage device. The end plate includes a first region on which the binding member is mounted, a second region which is fixed to the outer covering, and a third region which differs from the first region and the second region and has higher rigidity than the first region and the second region.. ... Gs Yuasa International Ltd

03/23/17 / #20170084885

Energy storage apparatus

An energy storage apparatus includes: an energy storage device; an outer covering; a fastening member which fixes the energy storage device to the outer covering; and an adhesive element disposed between the energy storage device and the outer covering. The adhesive element fixes the energy storage device to the outer covering at a position different from a position where the fastening member fixes the energy storage device to the outer covering.. ... Gs Yuasa International Ltd

03/16/17 / #20170077550

Nonaqueous electrolyte secondary battery

An object of the present invention is to provide a nonaqueous electrolyte secondary battery including a monofluorotoluene-containing nonaqueous electrolyte with an improved overcharge-preventing effect. In a monofluorotoluene-containing nonaqueous electrolyte, when a specific fluorophosphate compound is contained, the overcharge-preventing effect of the monofluorotoluene can be improved. ... Gs Yuasa International Ltd

03/16/17 / #20170074943

Operation state estimation apparatus and operation state estimation method for energy storage device, and energy storage system

An operation state estimation apparatus configured to estimate an operation state of an energy storage device includes a history acquirer configured to acquire a charge-discharge history of the energy storage device during a predetermined period, and a pattern data generator configured to generate pattern data in accordance with the acquired charge-discharge history, the pattern data being obtained by patterning data indicating repetitive variation out of data indicating variation in state quantity of the energy storage device during the predetermined period. An operation state estimation method of estimating an operation state of an energy storage device executed by a computer includes a history acquisition step of acquiring a charge-discharge history of the energy storage device during a predetermined period, and a pattern data generation step of generating pattern data in accordance with the acquired charge-discharge history.. ... Gs Yuasa International Ltd

03/09/17 / #20170069896

Battery

A battery includes: a cylindrical battery case; and an electrode body disposed in the battery case, and including a positive plate, a negative plate, and a separator disposed between the positive plate and the negative plate. A spacer formed of a dense body and an electrolyte storage space storing an electrolyte are provided between the electrode body and the battery case on one end or both ends of the battery case in an axial direction of the electrode body.. ... Gs Yuasa International Ltd

03/02/17 / #20170062875

Lead-acid battery

A lead-acid battery disclosed in the present specification includes: a container storing an element formed of a plurality of electrodes and an electrolyte solution; and a lid member fixed to an upper portion of the container. The lid member includes: a middle lid having a lid plate configured to seal an opening of the container; a cylindrical exhaust sleeve formed in a plateau portion formed on the lid plate in a penetrating manner and configured to discharge a gas generated in the container therethrough; and a recessed portion disposed adjacently to the exhaust sleeve and formed on a lower surface of the plateau portion in an upwardly recessed manner. ... Gs Yuasa International Ltd

03/02/17 / #20170062872

Nonaqueous electrolyte secondary battery and method for production of nonaqueous electrolyte secondary battery

Provided is a nonaqueous electrolyte secondary battery including a positive electrode, a negative electrode and a nonaqueous electrolyte, wherein the positive electrode has a positive active material containing a lithium transition metal composite oxide having an α-nafeo2-type crystal structure and represented by the composition formula: li1+αme1−αo2 (wherein me is a transition metal element including co, ni and mn; and α>0), and the negative electrode has a negative active material which contains a carbon material that is a mixture of graphite and amorphous carbon and in which the ratio of the amorphous carbon contained in the carbon material is 5 to 60% by mass.. . ... Gs Yuasa International Ltd

03/02/17 / #20170062790

Energy storage device

An energy storage device includes: a container; a terminal disposed outside the container or a current collector disposed inside the container; a conductive member penetrating the container and connected to the current collector or the terminal; and a fixing member joining the current collector or the terminal and the conductive member to each other.. . ... Gs Yuasa International Ltd

02/23/17 / #20170054142

Negative electrode for alkaline secondary battery, outer case for alkaline secondary battery and alkaline secondary battery

Disclosed is a negative electrode for an alkaline secondary battery, which can suppress elution of iron to improve the long-period storage property of the battery capacity even under conditions in which elution of iron in a substrate into an electrolyte solution tends to occur, and which can also suppress lowering of initial capacity and increase in internal resistance. Even under conditions in which the elution of iron in the substrate into an electrolyte solution tends to occur, including a case where there is a thin conductive protecting layer at the surface or where the conductive protecting layer has defects, by adding magnesium or a magnesium compound to the negative electrode for an alkaline secondary battery (excluding the case where magnesium is contained as a constituent element of a hydrogen storage alloy), the elution of iron can be suppressed, and thereby, the long-period storage property of the battery capacity can be improved and the lowering of the initial capacity and the increase in internal resistance can be suppressed.. ... Gs Yuasa International Ltd

02/09/17 / #20170040809

Switch failure detection device, battery pack including the same, and method of detecting failure of electronic switch

A switch failure detector, configured to be installed in an electric system including an electric storage device, includes at least one electronic switch connected in a path in which a charging current to the electric storage device and a discharging current from the electric storage device flow, at least one rectifier for passing a discharging current by bypassing the electronic switch when the electronic switch is turned off, and a controller for sending an on-command signal to the at least one electronic switch to turn on the electronic switch, and determining whether a switch failure detection process is executable based on a voltage of the electric storage device.. . ... Gs Yuasa International Ltd

02/09/17 / #20170040652

Electric storage device and electric storage apparatus

An electric storage apparatus includes a plurality of electric storage devices arranged side by side, each electric storage device including a case having a plurality of walls and an electric storage element which is housed in the case. The apparatus also includes a sheet-shaped heat transfer member which is in contact with outer surfaces of short sidewalls of the plurality of electric storage devices.. ... Gs Yuasa International Ltd

02/02/17 / #20170033343

Energy storage apparatus

Disclosed is an energy storage apparatus which includes: an energy storage device; an outer case which accommodates the energy storage device; a partition plate which is disposed between the energy storage device and a side wall of the outer case; and a discharge portion which is disposed on the outer case, the discharge portion having one or more openings through which a gas, which has passed through a flow passage formed between the partition plate and the side wall, is discharged from the outer case.. . ... Gs Yuasa International Ltd

01/26/17 / #20170025681

Lead-acid battery

A lead-acid battery includes a separator retaining an electrolyte solution, a positive electrode plate, a negative electrode plate, and a container. A negative electrode material contains bisphenols condensate, and a theoretical capacity ratio of the negative electrode material to a positive electrode material is 0.85 or more and 1.2 or less.. ... Gs Yuasa International Ltd

01/12/17 / #20170012267

Energy storage apparatus and spacer

Provided is an energy storage apparatus where a spacer includes: a base disposed orthogonal to a first direction; a first restricting portion and a second restricting portion extending from an end portion of the base in a second direction orthogonal to the first direction; a first projecting portion projecting from the base and the first restricting portion; and a second projecting portion projecting from the base and the second restricting portion. The first projecting portion includes: a first portion extending in the second direction on one surface of the base; and a second portion extending to a distal end in the first restricting portion, and is continuously formed at least from an end portion of the first portion on a first-restricting-portion side to a distal end of the second portion. ... Gs Yuasa International Ltd

01/12/17 / #20170012251

Energy storage device and method of manufacturing energy storage device

In an energy storage device (10) including: a container (100) including a plate-like portion; a positive electrode terminal (200) including a terminal body portion (201); a positive electrode current collector (120); a first gasket (220) including at least a portion that is disposed between the terminal body portion (201) and an outer surface of the plate-like portion, the first gasket (220) including a cylindrical portion (223) that is inserted into the hole portion formed in the plate-like portion; a second gasket (230) including at least a portion that is disposed between an inner surface of the plate-like portion and the positive electrode current collector (120); and a fixing portion (210) including a columnar portion (212) and a swaged portion (214) brought into contact with the positive electrode current collector (120), wherein the cylindrical portion (223) includes an extension portion extending toward the swaged portion (214) from a contact surface at which the inner surface of the plate-like portion and the second gasket (230) are in contact, and the extension portion is disposed adjacently to a space formed between the extension portion and the second gasket (230), or an outer diameter of a distal end portion of the extension portion closest to the swaged portion (214) differs from an outer diameter of a proximal end portion of the extension portion opposite to the distal end portion.. . ... Gs Yuasa International Ltd

01/12/17 / #20170012249

Battery

A battery includes an outer package including a laminated film including one or more resin layers, a terminal, and a melt-bonding assisting member including a thermoplastic resin and extending along the terminal. The outer package includes a melt-bonded region at which the terminal is sandwiched between the one or more resin layers. ... Gs Yuasa International Ltd

01/05/17 / #20170005314

Energy storage apparatus

Provided is an energy storage apparatus which includes a first energy storage device having a first terminal which is either a positive electrode terminal or a negative electrode terminal, wherein the energy storage apparatus further includes a terminal neighboring member which is disposed adjacently to the first terminal of the first energy storage device, and the terminal neighboring member includes: a first housing portion capable of housing a first conductive member which connects the first terminal and a second terminal which a second energy storage device different from the first energy storage device has to each other; and a first lead-out portion capable of leading out a second conductive member which connects the first terminal and a third terminal which a third energy storage device different from the first energy storage device and the second energy storage device has to each other from the first housing portion.. . ... Gs Yuasa International Ltd

01/05/17 / #20170001525

Electric storage apparatus

A battery including an output terminal, an electric storage device, a monitoring apparatus including a detector and a controller, the detector being configured to detect a variation value corresponding to an amount of charge of the electric storage device, a relay connected to the output terminal and the electric storage device, and a communication unit connected to the controller. The controller is configured to execute an opening process to switch a state of the relay from a closed state to an open state and to cause the communication unit to receive an input signal from outside.. ... Gs Yuasa International Ltd








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