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Ningde Amperex Technology Limited patents


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

ARCHIVE: New 2018 2017 2016 2015 2014 2013 2012 2011 2010 2009 | Company Directory "N" | Ningde Amperex Technology Limited-related inventors


Secondary battery cell and winding formation system thereof

The present invention provides a secondary battery cell and winding formation system thereof. The secondary battery cell comprises an anode electrode plate, an anode electrode tab, a cathode electrode plate, a cathode electrode tab and a separator. ... Ningde Amperex Technology Limited

Electrochemical energy storage device

An electrochemical energy storage device comprising an electrode assembly, an electrolyte, a packing shell and an adhesive material located between the electrode assembly and the packing shell. The adhesive material comprises an adhesive layer and a protective layer. ... Ningde Amperex Technology Limited

Wound cell

Provided is a wound cell, formed by winding of a first and second separator, a first and second electrode plate from start ends thereof, outermost circle of second electrode plate includes second single-side coated area, surface of which facing center of the wound cell is second blank current collector area not coated with second active material, portion of first electrode plate opposite to second blank current collector area includes first single-side coated area, surface of which away from the center of the wound cell is first blank current collector area not coated with first active material; tail end of first electrode plate contains first blank foil area, portion of second electrode plate opposite to first blank foil area contains second blank foil area; start ends of first and second single-side coated area are located at two opposite sides in thickness direction of the cell.. . ... Ningde Amperex Technology Limited

Method and apparatus of battery charging

Embodiments of the present application provide a method of battery charging, which relates to the field of battery charging and is capable of effectively improving safety performance of the battery. The method includes: obtaining an anode open circuit voltage curve, an anode impedance curve, a lithium deposition potential threshold and a state of charge, corresponding to a battery; determining a current anode open circuit voltage according to the anode open circuit voltage curve and the state of charge; determining a current anode impedance according to the anode impedance curve and the state of charge; determining a current charging current according to the current anode open circuit voltage, the current anode impedance and the lithium deposition potential threshold; and charging the battery according to the current charging current. ... Ningde Amperex Technology Limited

Drawable adhesive tape and drawable adhesive tape product

A drawable adhesive tape and a drawable adhesive tape product. The drawable adhesive tape includes: a base framework extending along length direction of the drawable adhesive tape and having a plurality of adhesive-accommodating regions which extend along both thickness direction of the drawable adhesive tape toward interior of the base framework and length direction of the drawable adhesive tape and which are arranged at intervals along width direction of the drawable adhesive tape, and an adhesive layer filled in the adhesive-accommodating regions. ... Ningde Amperex Technology Limited

Electrolyte and lithium-ion battery containing the same

The present application relates to the technical field of lithium-ion batteries and, specifically, relates to an electrolyte and a lithium-ion battery containing the electrolyte. The electrolyte of the present application includes a lithium salt, an organic solvent and additives, the additives include a fluorinated ether compound and an ester dimer compound, the ester dimer compound includes carbonate dimers, carboxylate dimers and sultone dimers. ... Ningde Amperex Technology Limited

Wound-type cell and winding mandrel

The present disclosure provides a wound-type cell and a winding mandrel. The wound-type cell comprises: a first electrode plate having a blank first current collector which is positioned at a first winding start end and is not coated with the first active material layer; a second electrode plate having a blank second current collector which is positioned at a second winding start end and is not coated with the second active material layer, and the blank second current collector is positioned at an inner side of the blank first current collector; a separator; a first electrode tab; and a second electrode tab. ... Ningde Amperex Technology Limited

Wound-type cell

The present disclosure provides a wound-type cell which comprises: a first electrode plate having a first current collector and a first active material layer coated on a surface of the first current collector; a second electrode plate having a second current collector and a second active material layer coated on a surface of the second current collector, and a second winding start end of the second electrode plate is positioned at an inner side of a first winding start end of the first electrode plate in a thickness direction; a separator; a first electrode tab; and a second electrode tab. A third winding start end of the separator is positioned at an outer side of the second winding start end of the second electrode plate in a length direction, extends along a direction away from a second end of the second winding start end and is not folded back.. ... Ningde Amperex Technology Limited

Lithium ion battery and separator thereof

The present invention provides a separator for a lithium ion battery. The separator includes a substrate, an inorganic coating on at least one surface of the substrate, and an organic coating on at least one surface of the inorganic coating, wherein the coating density of the organic coating is 0.1 mg/1540.25 mm2˜10 mg/1540.25 mm2. ... Ningde Amperex Technology Limited

Negative active material and preparation method thereof and secondary battery

The present disclosure provides a negative active material and a preparation method thereof and a secondary battery. The negative active material comprises: lithium pre-intercalated silicon-containing materials; and a polymer coating layer coated on an outer surface of each particle of the lithium pre-intercalated silicon-containing materials. ... Ningde Amperex Technology Limited

Pressing device

The present disclosure provides a pressing device which comprises: at least two floating heads which are arranged side by side; a positioning member connecting with each floating head and defining a position of each floating head; a cover plate positioned above each floating head; and elastic members, each elastic member being provided between the cover plate and the corresponding floating head so as to make the cover plate slide up and down relative to each floating head. The pressing device can be adapted to a step type cell or a step type battery having a certain tolerance in thickness and can ensure that every step surface of the step type cell or the step type battery is uniformly pressed, thereby improving the quality of the battery.. ... Ningde Amperex Technology Limited

Electrochemical energy storage device

The present disclosure provides an electrochemical energy storage device, which comprises a cell, an electrolyte and a package. The electrochemical energy storage device further comprises a binding material positioned between the cell and the package. ... Ningde Amperex Technology Limited

Battery electrode and secondary battery using the same

The present application relates to the field of energy storage devices and, in particular, relates to a battery electrode, and a secondary battery using the battery electrode. The battery electrode comprises an electrode tab, a current collector, and a diaphragm attached onto at least one surface of the current collector, wherein the diaphragm is provided with a groove, the electrode tab is embedded into the groove and is electrically connected with the current collector, the electrode tab comprises an embedded portion embedded in the groove and an exposed portion protruded outside the groove; wherein an upper surface of the embedded portion is covered with an active material coating layer. ... Ningde Amperex Technology Limited

Method for charging a lithium ion battery

A method for charging a lithium ion battery includes the steps of: 1) determining a maximum charging current i0 and a lowest anode potential η of the lithium ion battery at which no lithium precipitation occurs; 2) charging the lithium ion battery at a constant current of i1 which is greater than i0 for a charging time t1; 3) discharging the lithium ion battery at a constant current of i2 which is less than i0 for a discharging time t2, 5≦t1/t2≦50; 4) repeating steps 2) and 3) until a cutoff voltage of the lithium ion battery reaches v0 and standing the lithium ion battery for a standing time t3; and 5) charging the lithium ion battery at a constant current of i0 until the cutoff voltage of the lithium ion battery reaches v0 and charging the lithium ion battery to a cutoff current of i3 at a constant voltage.. . ... Ningde Amperex Technology Limited

08/17/17 / #20170237110

Preparation method of laminated cell

The present disclosure provides a preparation method of a laminated cell comprising: providing a laminated pack: the laminated pack comprises n laminated groups, the each laminated group comprises m electrode plate assemblies, a spacer is provided between the adjacent laminated groups, the electrode plate assemblies of all the laminated groups of the laminated pack and the spacers between the adjacent laminated groups are orderly positioned in a z-shaped separator in a laminating direction, an upper part and a lower part of the separator adjacent to the each spacer are separated by the each spacer; forming a laminated cell: the separator is broken at an end of the each spacer positioned in the separator to allow the each spacer and the each laminated group to separate from each other, so as to obtain the corresponding laminated cell formed by the electrode plate assembly of the each laminated group and the corresponding separator.. . ... Ningde Amperex Technology Limited

07/27/17 / #20170214007

Packaging housing for li-ion battery, method for preparing the same and li-ion battery having the same

The present application relates to the field of li-ion batteries and, specifically, relates to a packaging housing for a li-ion battery, a method for preparing the packaging housing for a li-ion battery. A bare cell of the li-ion battery is packaged by the packaging housing, the packaging housing comprises, successively from inside to outside, a sealing housing layer, a metal coating layer and a plastic coating layer; after the sealing housing layer packages the bare cell and then is sealed, the metal coating layer and the plastic coating layer are successively provided on an external surface of the sealing housing layer. ... Ningde Amperex Technology Limited

07/20/17 / #20170207651

Battery controlling apparatus and method for controlling battery

The present application relates to a battery controlling apparatus and a method for controlling a battery, the battery controlling apparatus includes a temperature sensor, a voltage sensor and a controller, the voltage sensor is connected with the battery, an output end of the voltage sensor is connected with the controller, an input end of the temperature sensor is connected with the battery and an output end of the temperature sensor is connected with the controller; the voltage sensor transfers an acquired voltage of the battery to the controller, the temperature sensor transfers an acquired present temperature of the battery to the controller, the controller controls the battery to be in a charging state or a discharging state according to the acquired present temperature of the battery and a relationship between a preset cut-off voltage corresponding to the present temperature of the battery and the voltage of the battery.. . ... Ningde Amperex Technology Limited

07/20/17 / #20170207456

Cathode material for li-ion battery, method for preparing the same and li-ion battery containing the same

The present invention relates to the field of the li-ion battery and, particularly, relates to a cathode material for the li-ion battery, a method for preparing the same and a li-ion battery containing the same. A surface of the cathode material of spinel type lithium-manganese-nickel-containing composite oxide of the present invention is coated with a complex coating layer composed of a first coating layer containing li7la3zr2o12 and a second coating layer containing linbo3. ... Ningde Amperex Technology Limited

07/20/17 / #20170207438

Secondary battery

A secondary battery comprises a cell. The cell includes a positive electrode plate having a positive current collector and a negative electrode plate having a negative current collector. ... Ningde Amperex Technology Limited

06/15/17 / #20170170456

Device for removing coating layer of electrode plate

A device for removing a coating layer of an electrode plate, an electrode plate comprises a current collector and a coating layer coated on each of at least one surface of the current collector, the device for removing the coating layer of the electrode plate comprises: a conveying system for conveying the electrode plate which has the coating layer to be removed; at least one wetting mechanism, each wetting mechanism is provided at the coating layer to be removed on one surface of the electrode plate which is conveyed by the conveying system and wets the coating layer on the one surface of the electrode plate within the region where the coating layer will be removed by using a solvent; a laser removing system; and a control system communicating with the conveying system, the wetting mechanism and the laser removing system. The laser removing system comprises: at least one laser emitting head for emitting a laser beam and projecting the laser beam onto the coating layer on the corresponding surface of the electrode plate within the region where the coating layer will be removed and which is wetted by the wetting mechanism to make the solvent which wets the coating layer of the electrode plate within the region where the coating layer will be removed vaporized, so as to remove the coating layer on the surface of the electrode plate within the region where the coating layer will be removed and in turn expose the current collector on the surface of the electrode plate corresponding to the region where the coating layer will be removed.. ... Ningde Amperex Technology Limited

06/15/17 / #20170170455

Method for removing coating layer of electrode plate

The present disclosure provides a method for removing a coating layer of an electrode plate, an electrode plate comprises a current collector and a coating layer coated on each of at least one surface of the current collector, the method for removing the coating layer of the electrode plate comprises steps of: (i) fixing a region where the coating layer will be removed of the electrode plate by vacuum adsorption from a surface of the current collector opposite to the surface of the current collector on which the region where the coating layer will be removed is present; (ii) emitting a laser beam on the coating layer within the region where the coating layer will be removed from a side of the surface of the current collector on which the region where the coating layer will be removed is present, so as to remove the coating layer of the electrode plate within the region where the coating layer will be removed and in turn expose the current collector of the electrode plate corresponding to the region where the coating layer will be removed; and (iii) getting rid of a residue of the coating layer generated in the step (ii). The region where the coating layer will be removed of the electrode plate is fixed by the vacuum adsorption firstly and then the coating layer within the region where the coating layer will be removed is removed by the laser beam, because the electrode plate is fixed, it can avoid a deformation of the electrode plate during laser removing due to a stress generated in the coating layer which is heated by the laser beam and a residual stress released by the removed coating layer.. ... Ningde Amperex Technology Limited

06/15/17 / #20170170454

Method for removing coating layer of electrode plate

The present disclosure provides a method for removing a coating layer of an electrode plate, an electrode plate comprises a current collector and a coating layer coated on each of at least one surface of the current collector, the method for removing the coating layer of the electrode plate comprises steps of: (i) wetting the coating layer of the electrode plate within the region where the coating layer will be removed by using a solvent; (ii) emitting a laser beam on the coating layer of the electrode plate within the region where the coating layer will be removed to make the solvent which wets the coating layer of the electrode plate within the region where the coating layer will be removed vaporized, so as to remove the coating layer of the electrode plate within the region where the coating layer will be removed and in turn expose the current collector of the electrode plate corresponding to the region where the coating layer will be removed; and (iii) getting rid of a residue of the coating layer generated in the step (ii). The coating layer of the electrode plate within the region where the coating layer will be removed is wetted in advance by using the solvent, after the laser beam is emitted on the wetted electrode plate, the solvent existing in the electrode plate absorbs the energy of the laser beam so as to be instantaneously vaporized, thereby generating a strong transient pressure, the particles of the coating layer are peeled off from the current collector under the action of the strong pressure, so as to remove the particles of the coating layer, so that it will not damage the electrode plate, thereby avoiding the deformation of the electrode plate.. ... Ningde Amperex Technology Limited

05/04/17 / #20170120380

Device for cleaning coating on lithium-ion battery electrode sheet

A device for removing a coating layer of an electrode plate of a lithium-ion battery comprises a conveying system (1) for conveying an electrode plate (6) and a laser system (2), the laser system comprises at least one laser emitting head (21) for emitting a laser beam and projecting the laser beam onto the electrode plate and a beam shaping mechanism (22) for homogenizing energy of the laser beam emitted from the laser emitting head, the laser emitting head and the beam shaping mechanism are electrically connected. In the device for removing the coating layer of the electrode plate of the lithium-ion battery, the beam shaping mechanism is provided, energy of the laser beam can be homogenized, neither damages a foil of the electrode plate so that welding quality of the electrode tab is promoted, nor results in remaining of the coating layer so that the removing quality is promoted, and the energy can be effectively utilized, thereby realizing maximum utilization of the energy of the laser.. ... Ningde Amperex Technology Limited








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