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2044results about "Wound/folded electrode electrodes" patented technology
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Joining method
This method, for joining a collector plate and a winding electrode group 2 comprising a separator and electrode plate stacked and wound together, involves pressing a jig 32 against the ends of the electrode plates, which are arranged in the radial direction of the electrode group 2, displacing the jig 32 on a curved trajectory so as to bend the ends such that the amount of displacement towards the electrode group 2 gradually increases and the amount of displacement in the radial direction gradually deceases, and joining the bent ends and the electrode plates.
Owner:PANASONIC INTELLECTUAL PROPERTY MANAGEMENT CO LTD
Apparatus and method for making coils, preferably for an electrochemical cell intended for battery production
PendingUS20260100402A1Assembling battery machinesFinal product manufactureElectrical batteryMechanical engineering
Owner:GD SPA
Battery cell, battery, electric apparatus, and energy storage apparatus
PendingUS20250391964A1Small-sized cells cases/jacketsWound/folded electrode electrodesElectrical batteryStructural engineering
A battery cell includes a housing and an electrode assembly, where the electrode assembly is accommodated within the housing, the housing is cylindrical, a height of the housing is H1, and a radius of the housing is R1. The housing includes a first end wall, a second end wall, and a side wall, where the first end wall and the second end wall are oppositely disposed along a height direction of the housing, and the side wall connects the first end wall and the second end wall. A sum of thicknesses of the first end wall and the second end wall is a, and a thickness of the side wall is b, satisfying: (R1−b)2*(H1−a) / (R12*H1)≥96%.
Owner:CONTEMPORARY AMPEREX TECHNOLOGY CO LTD
Battery monomer, coating method of electrode assembly and coating equipment
ActiveCN121035302AAssembling battery machinesFinal product manufactureElectrical batteryPolymer chemistry
The invention provides a battery monomer, and a coating method and coating equipment of an electrode assembly, and belongs to the field of batteries. The battery monomer comprises an electrode assembly and an insulating film, the insulating film is wound and coated on the periphery of the electrode assembly, the insulating film is provided with a winding starting end and a winding ending end along the self-winding direction, and the winding starting end and the winding ending end are at least partially overlapped; the insulating film comprises a gluing area and an empty film area, at least one end of the gluing area in the winding direction is connected with the empty film area, the gluing area is arranged on at least part of the periphery of the electrode assembly, and at most one of the winding starting end and the winding ending end comprises the part of the gluing area. According to the scheme, the insulating film can play a role in insulation and protection, and meanwhile, the binding of the electrode assembly is not too tight.
Owner:CONTEMPORARY AMPEREX TECHNOLOGY CO LTD
Battery
ActiveDE202025105716U1Wound/folded electrode electrodesCell component detailsElectrical batteryStructural engineering
Battery comprising a housing (1), a battery cell (2), a holder (3) and a support element (4), wherein the battery cell (2), the holder (3) and the support element (4) are located in the housing (1), wherein the battery cell (2) comprises a cell body (21) and a terminal tab, wherein the holder (3) is located on one side of the battery cell (2) on which the terminal tab is provided, wherein the housing (1) has a first wall surface (1a), wherein the holder (3) comprises two holder sections (31), wherein one end of the two holder sections (31) is attached to the first wall surface (1a) and the other end extends in a direction away from the first wall surface (1a), wherein in a first direction the two holder sections (31) are spaced apart from each other and a terminal tab receiving space (32) is formed between them, wherein the terminal tab extends from the cell body (21) into the terminal tab receiving space (32),wherein the support element (4) is used for installation in the connection lug receiving space (32), wherein in the first direction the maximum length of the support element (4) is L1 and a distance between the two mounting sections (31) is L2, where L1 > L2, wherein the support element (4) is pressed against the two mounting sections (31) with both sides after its installation in the connection lug receiving space (32).
Owner:CALB GROUP CO LTD
Electrode assembly and cylindrical all-solid-state battery including the same
PendingUS20250391903A1Solid electrolytesSmall-sized cells cases/jacketsAll solid stateElectrical battery
Example embodiments include electrode assemblies and all-solid-state batteries. The electrode assembly includes a first solid electrolyte layer, a positive electrode layer, a second solid electrolyte layer, and a negative electrode layer that are disposed along a radial direction of the electrode assembly. The positive electrode layer includes a positive electrode current collector, a first positive electrode active material layer on a first surface of the positive electrode current collector and in contact with the first solid electrolyte layer. A first width of the first positive electrode active material layer is less than a second width of the first solid electrolyte layer, a first buffer structure adjacent to a first side of the first positive electrode active material layer, and a second buffer structure adjacent to a second side of the first positive electrode active material layer.
Owner:SAMSUNG SDI CO LTD
Multi-layer conductive tape, secondary battery including same, and manufacturing method therefor
The present invention relates to a multilayer conductive tape, including: an adhesive layer; an electrically conductive layer positioned on one side of the adhesive layer; an insulating layer positioned on one side of the electrically conductive layer; and a protective layer for protecting an outer surface of the insulating layer.
Owner:LG ENERGY SOLUTION LTD
Cylindrical battery and battery pack
PendingCN121331893ASmall-sized cells cases/jacketsCylindrical casing cells/batteryDischarge efficiencyElectrical battery
The invention discloses a cylindrical battery and a battery pack. The cylindrical battery comprises: a housing having an opening formed at one end in the axial direction thereof; the electrode assembly is arranged in the shell; the cover plate is installed on the opening in a sealed mode, and the cover plate comprises a first weak structure; the switching piece is arranged between the electrode assembly and the cover plate, the switching piece comprises a first switching part and a second switching part, the first switching part is electrically connected with a tab of the electrode assembly, and the second switching part is fixed and electrically connected with the shell; a second weak structure is arranged on the first adapter part; the calculation formula of the radius R of the second weak structure is shown in the specification. The final position of the second weak structure is determined through a calculation formula, at least part of the second weak structure does not fall into the area where the pressure relief part is located after deformation, then the second weak structure is supported by the edge of the fixing part so as to be prone to deformation, and therefore the beneficial technical effects of improving safe pressure relief and discharging efficiency and stability of the anti-explosion valve are achieved.
Owner:ENVISION AESC JAPAN LTD
Tabletless energy storage device and its manufacturing method
ActiveJP7785761B2Small-sized cells cases/jacketsFinal product manufactureMechanical engineeringStorage energy
An energy storage device, such as a lithium-ion battery, without tabs connecting the electrode jelly roll to the can, and a method for making the same, is described. A series of flags may be cut, bent, and interleaved with one another to form connection points for upper and lower collector plates within the can. The upper and lower collector plates can be welded directly to the interleaved flags to form connection points for the anode and cathode in the energy storage device.
Owner:TESLA INC
Battery cell, battery, and electric device
Embodiments of this application provide a cell, a battery, and an electric device. The cell includes a can and an electrode assembly. The can includes a first wall portion, where N vent mechanisms are arranged along a first direction on the first wall portion. The electrode assembly is accommodated in the can. The electrode assembly includes a body portion and a tab. The body portion includes a plurality of sub-regions. Along the first direction, the tab is arranged at at least one end of the body portion. The plurality of sub-regions are consecutively arranged. A length of the body portion is L, and a length of the sub-region is L1, L=L1×N, L≥400 mm, and N≥2. A projection of each vent mechanism along a thickness direction of the first wall portion is correspondingly located in one of the sub-regions. Each vent mechanism can discharge a discharge medium generated by thermal runaway in a corresponding sub-region, and the discharge medium generated by thermal runaway in each sub-region can be quickly discharged through a corresponding vent mechanism, which can effectively improve timeliness of venting of a cell, thereby improving reliability of the cell.
Owner:CONTEMPORARY AMPEREX TECHNOLOGY CO LTD
Electrode assembly, manufacturing method and equipment thereof, battery and electric device
PendingCN121583984APrimary cell manufactureAssembling battery machinesElectrolytic agentElectrical battery
The embodiment of the invention provides an electrode assembly and a manufacturing method and equipment thereof, a battery and a power utilization device, the electrode assembly is used for a battery monomer (100) and comprises a first pole piece (1) and a second pole piece (2) which are opposite in polarity, and each of the first pole piece (1) and the second pole piece (2) comprises a main body part (11) and a tab (12) protruding out of the main body part (11), the first pole piece (1) and the second pole piece (2) are wound around a winding axis (K), so that respective main body parts (11) form a winding main body (S); the end part of the winding main body (S) comprises at least one conductive region (121) and at least one liquid guide region (111), the tab (12) is led out from the conductive region (121), is wound for at least one circle and is used for being electrically connected with a terminal (1022) of a battery monomer (100), and the liquid guide region (111) and the conductive region (121) are arranged adjacently along the radial direction of the winding main body (S) and are used for guiding electrolyte to flow into the winding main body (S).
Owner:CONTEMPORARY AMPEREX TECHNOLOGY CO LTD
Winding electrode
PendingJP2026084381AFinal product manufactureElectrode carriers/collectorsElectrical polarityMechanical engineering
To provide a wound electrode body that can improve heat dissipation on the inside of the winding. [Solution] The wound electrode body 10 is a wound electrode body 10 in which a first electrode 11A and a second electrode 11B having a different polarity from the first electrode 11A are wound in a flat shape via a separator 12. In the wound electrode body 10, the first electrode 11A includes a resin substrate, a conductive layer provided on the surface of the resin substrate, and a first active material layer 200A provided on the main surface of the conductive layer located on the side opposite to the side where the resin substrate is located relative to the conductive layer. The portion of the resin substrate located on the inside of the wound electrode body 10 has higher heat dissipation than the portion located on the outside of the wound electrode body 10.
Owner:TOYOTA JIDOSHA KK +1
Electrode assembly, cylindrical battery cell, and battery pack and vehicle including the same
ActiveUS12537231B2Small-sized cells cases/jacketsFinal product manufactureElectrical batteryMechanical engineering
An electrode assembly having a first electrode, a second electrode, and a separator positioned between the first electrode and the second electrode. The first electrode, the second electrode, and the separator are together wound about an axis in a winding direction resulting in a plurality of winding turns. Each of the first electrode and the second electrode has a first side and a second side opposite the first side in the direction of the axis, as well as a first, electrode active material portion, coated with an electrode active material, extending from the second side in the direction of the first side, and a second, uncoated portion extending from the first side in the direction of the second side to the active material of the first portion. Additionally, the first side of the first electrode and the first side of the second electrode are divided into a plurality of segments by a cut groove, and each of the segments has a first end corresponding to the first side of either the first or the second electrode. One or more of the segments are bent in a radial direction relative to the axis, at a point below the first end of each bent segment, and the separator has a side that is positioned between the bending point of each bent segment and a boundary between the first and the second portions.
Owner:LG ENERGY SOLUTION LTD
Electrode body
PendingJP2026081856AElectrode manufacturing processesFinal product manufactureMetallic foilMechanical engineering
The present invention provides an electrode body that can suppress damage to the curved portions in a structure including a first electrode sheet having a plurality of first laminated portions and a plurality of curved portions connecting adjacent first laminated portions in the lamination direction. [Solution] The electrode body comprises a first electrode portion 11 composed of a first electrode sheet including a plurality of first laminated portions 110 and a plurality of first curved portions 115, and a second electrode portion 12 having a plurality of second laminated portions 120, wherein the plurality of first laminated portions 110 and the plurality of second laminated portions 120 are arranged alternately in the lamination direction, the first electrode sheet includes a first sheet portion including a portion made of a first metal foil that constitutes the first laminated portion and a portion made of a first resin member that constitutes a plurality of first curved portions 115, and a first active material layer 112, the first laminated portion 110 having a first metal foil 111 and a first active material layer 112 on the first metal foil 111, the first active material layer 112 is not provided on the first resin member.
Owner:TOYOTA JIDOSHA KK +1
Method of manufacturing tab-less cylindrical cells
ActiveUS12494555B2Small-sized cells cases/jacketsFinal product manufactureLithium–sulfur batteryElectrical battery
A method of manufacturing a lithium-sulfur battery in a cylindrical cell format is provided. In some aspects, the method includes providing an anode current collector and providing an anode on the anode current collector. The method may include depositing a protective layer on and along the length of the anode, providing a cathode current collector opposite to the anode, and providing a cathode on the cathode current collector. The method may include providing a separator between the anode and the cathode, disposing an adhesive carbon-containing layer along the bottom edge of the anode (e.g., to replace one or more conventional anode tabs), and dispersing an electrolyte throughout the lithium-sulfur battery. The method may include forming the lithium-sulfur battery in the cylindrical cell format by collectively winding into a jelly roll.
Owner:LYTEN INC
Electrochemical device and electronic device
An electrochemical device includes a housing, an electrode assembly, and an insulating tape. The electrode assembly includes a first electrode plate, a second electrode plate and a separator. The insulating tape includes a body portion and a first connecting portion. The electrode assembly includes a first surface and a second surface opposite to each other. The body portion is disposed on the first surface, and is fixedly bonded to the electrode assembly and the housing separately. The first connecting portion is formed together with the body portion in one piece. A first end of the first connecting portion is connected to the body portion, and a second end of the first connecting portion is disposed on the second surface, and is fixedly bonded to the electrode assembly and the housing separately. The first connecting portion is bonded to an edge of the separator.
Owner:NINGDE AMPEREX TECHNOLOGY LTD
Battery and electronic device
ActiveUS12603399B2Batteries circuit arrangementsCells structural combinationElectrical batteryElectric devices
A battery and an electronic device are disclosed. The battery includes: a first bare cell portion and a second bare cell portion. The first bare cell portion has a first surface and a side surface connected to the first surface, the first surface is configured to face towards a same direction as that of an opening of a battery compartment of an electronic device when the battery is installed in the battery compartment, and the side face is configured to face towards an inner side surface of the battery compartment of the electronic device when the battery is installed in the battery compartment. The second bare cell portion is located on a side that the first surface faces, and an orthographic projection of the second bare cell portion on the first surface overlaps the first surface.
Owner:HONOR DEVICE CO LTD
Energy storage cell and method for manufacturing an energy storage cell
The present invention provides a power storage cell capable of suppressing the exposure of the insulating support layer due to crack formation in the conductive layer laminated on the insulating support layer. [Solution] The energy storage cell 100 comprises an electrode body 10 and a case 20 that houses the electrode body 10. The electrode body 10 includes a first electrode 10A. The first electrode 10A has an insulating support layer 110 and a first conductive layer 111 and a second conductive layer 112 formed on the insulating support layer 110. Each of the first conductive layer 111 and the second conductive layer 112 is formed of flaky metal powder 113.
Owner:TOYOTA JIDOSHA KK +1
Secondary battery, battery pack, and electronic device
ActiveCN223651449USmall-sized cells cases/jacketsFinal product manufactureElectrical batteryBattery cell
The utility model provides a secondary battery, a battery pack and an electronic device. The secondary battery includes: a case; the electrode assembly is accommodated in the shell and is of a winding structure formed by winding a positive plate, a diaphragm and a negative plate; a first negative electrode surface of a negative electrode current collector of the negative plate is covered with a first negative electrode active material layer, and a second negative electrode surface is covered with a second negative electrode active material layer; the negative plate comprises a negative plate starting end, a first position, a second position and a negative plate ending end along the winding direction; the group margin of the secondary battery is 94%-99%, the area between the first position and the second position is a preset area on the surface, away from the center hole, of the second negative electrode active material layer, and a first insulating layer is continuously arranged in the preset area in the winding direction. By arranging the first insulating layer, the safety problem caused by lithium separation can be avoided, and the safety performance of the secondary battery is greatly improved.
Owner:ENVISION AESC JAPAN LTD
Battery monomer, electric equipment and winding equipment
The invention discloses a battery monomer, electric equipment and winding equipment, and belongs to the technical field of batteries, the battery monomer comprises an electrode assembly, the electrode assembly comprises a first pole piece, a second pole piece, a separator and a supporting piece, the first pole piece, the second pole piece and the separator are all wound on the periphery of the supporting piece, the supporting piece comprises a supporting main body and an insert, and the insert is inserted into the supporting main body. The supporting body is provided with an inner cavity, and a notch is formed in one side of the supporting body and extends from the first end of the supporting body to the second end of the supporting body. The insert is connected with the supporting body and extends into the notch, the inner cavity is used for containing the winding needle, the winding needle is used for driving the supporting body to rotate synchronously, and the supporting body and the insert are used for clamping the isolation piece. The separator is rolled in a mode of applying friction force to the separator through the supporting main body and the insert, and pre-rolling of the separator is completed without depending on hot ironing and gluing modes. The problem that the separator is wrinkled or the pole piece is wrinkled due to hot ironing and gluing modes is solved, and the structural stability of the electrode assembly is improved.
Owner:CONTEMPORARY AMPEREX TECHNOLOGY CO LTD
Battery cell and preparation method therefor, and battery and electric device comprising same
Provided are a battery cell (10), a method for manufacturing a battery cell (10), a battery (100) and an electrical apparatus (1000) comprising same. The battery cell (10) comprises: a case (11) comprising a first wall (111); a terminal post (12) arranged on the first wall (111) and provided with a connecting hole (1223) passing through the terminal post (12), wherein at least part of the inner peripheral wall of the connecting hole (1223) is formed as a first inclined plane (12211), and the first inclined plane (12211) is obliquely arranged relative to the axis of the connecting hole (1223); and an electrode assembly (13) comprising an active material coating portion (131) and a tab (132), wherein the active material coating portion (131) is arranged in the case (11), the tab (132) is electrically connected to the active material coating portion (131), and at least part of the tab (132) extends into the connecting hole (1223) and is connected to the first inclined plane (12211).
Owner:CONTEMPORARY AMPEREX TECHNOLOGY CO LTD
Energy storage cell
To provide an energy storage cell that allows for a simplified configuration of the wound electrode body. [Solution] The energy storage cell 100 comprises a conductive winding core 90, a wound electrode body 10 including a first electrode sheet 10A and a second electrode sheet 10B wound around the winding core 90, and a first connecting member 50A and a second connecting member 50B positioned opposite the wound electrode body 10 in the Z direction in which the winding core 90 extends. The winding core 90 has a rectangular parallelepiped shape. The first electrode 91 of the winding core 90 is connected to the first electrode sheet 10A and the first connecting member 50A, respectively. The second electrode 92 of the winding core 90 is connected to the second electrode sheet 10B and the second connecting member 50B, respectively.
Owner:TOYOTA JIDOSHA KK +1
Battery, and battery pack and vehicle comprising the same
ActiveUS12609362B2Small-sized cells cases/jacketsFinal product manufactureElectrical connectionBattery pack
Discussed is a battery that may include an electrode assembly including a first electrode, a second electrode and a separator wound around a winding axis, wherein the first electrode includes a first active material region coated with a first active material layer and a first uncoated region not coated with the first active material layer, and at least a part of the first uncoated region being an electrode tab; a first current collector coupled to at least a part of the first uncoated region on the electrode assembly; a battery housing to accommodate the electrode assembly and the first current collector; and an insulator interposed between at least one of the first uncoated region and the first current collector and an inner surface of the battery housing facing the at least one of the first uncoated region and the first current collector to block an electrical connection between the battery housing and the at least one of the first uncoated region and the first current collector.
Owner:LG ENERGY SOLUTION LTD
Winding electrode
To provide a wound electrode body that can suppress damage to the curved portion. [Solution] A winding electrode body 10 is provided in which a positive electrode 11 and a negative electrode 12 are wound in a flat shape via a separator 13, and has a pair of flat portions 91 facing each other with respect to the winding center, and a pair of curved portions 92 connecting the ends of the pair of flat portions 91, wherein the positive electrode 11 includes a first base material in which a first metal foil 111 and a first resin member 112 are alternately joined along the winding direction of the winding electrode body 10, and the negative electrode 12 includes a second base material in which a second metal foil 121 and a second resin member 122 are alternately joined along the winding direction, in each of the pair of flat portions 91 the first metal foil 111 and the second metal foil 121 are alternately arranged in the direction in which the pair of flat portions 91 face each other, and in each of the pair of curved portions 92 the first resin member 112 and the second resin member 122 are alternately arranged in the radial direction of the winding electrode body 10.
Owner:TOYOTA JIDOSHA KK +1
Method for manufacturing a battery assembly, a battery assembly, and a secondary battery containing the same.
To provide a method for manufacturing a battery assembly that prevents a short separator or an end of a positive electrode from breaking in a battery assembly in which a negative electrode, a separator, and a positive electrode laminate are wound up, a battery assembly, and a secondary battery including the battery assembly.SOLUTION: A battery assembly 10 includes a negative electrode 1, a first separator 3a, a positive electrode 2, and a second separator 3b stacked and wound up, and the negative electrode includes a negative electrode active material portion 1a in which a negative electrode active material is stacked on both sides of the negative electrode current collector, and a negative electrode uncoated portion 1b in which a negative electrode active material is not stacked on the negative electrode current collector. The negative electrode uncoated portion is wound around the outermost periphery of the battery assembly and further includes a first sealing tape 4 attached to a winding end of at least one of the negative electrode, the first separator, the positive electrode, and the second separator. At least one of the first separator and the second separator and at least one of the negative electrode and the positive electrode are attached to one side of the first sealing tape.SELECTED DRAWING: Figure 2
Owner:LG ENERGY SOLUTION LTD
Electrode sheet, jelly roll, cylindrical battery and battery pack
PCT designated stageWO2025245982A1Small-sized cells cases/jacketsFinal product manufactureElectrical batteryMechanical engineering
An electrode sheet (10), a jelly roll, a cylindrical battery, and a battery pack. A plurality of tabs (20) are arranged at intervals on one side of the electrode sheet (10). In a first direction, the electrode sheet (10) comprises at least two segments (30). Each segment (30) has at least one tab (20). The width of each tab (20) is in the first direction, and the height of each tab (20) is in a second direction, with the second direction being perpendicular to the first direction. For the tabs (20) in the same segment (30), the tabs (20) have the same width and the same height. For tabs (20) in different segments (30), at least one of the width and height of the tabs (20) is different.
Owner:EVE ENERGY CO LTD
Secondary battery and method of manufacturing the same
The disclosure relates to a battery cell. More specifically, the disclosure relates to a battery cell minimizing a connection space between a non-coating portion forming an electrode assembly (100) and a current collector (220). The battery cell according to the disclosure can maximize the use efficiency of an internal space by minimizing a connection space between a non-coating portion of a jelly roll-shaped electrode assembly and a current collector (220). The battery cell according to the disclosure can increase a capacity by reducing a space loss inside a case (400) accommodating an electrode assembly (100). The battery cell according to the disclosure arranges a welding face of a current collector (220) perpendicular to a winding axis direction of an electrode assembly (100), and thus can reduce damage to the electrode assembly (100) when the battery cell is crushed and can improve safety.
Owner:SK ON CO LTD
Deformation analysis device and method for secondary battery
ActiveUS12633582B2Material analysis using wave/particle radiationImage analysisElectrical batteryComputational physics
A deformation analysis device and a non-destructive analysis method for a secondary battery are capable of accurately diagnosing electrode deformation of the secondary battery using a computed tomography (CT) image. The deformation analysis method for the secondary battery includes performing computed tomography (CT) scanning on each of a first area and a second area of the secondary battery to acquire a first image corresponding to the first area and a second image corresponding to the second area, measuring a first angle from a winding front end to a winding distal end of an electrode of an electrode assembly in the first image and measuring a second angle from the winding front end to the winding distal end of the electrode of the electrode assembly in the second image, and determining that the electrode assembly is deformed if a difference value between the first angle and the second angle is greater than a reference value.
Owner:SAMSUNG SDI CO LTD +1
Die assembly and method of manufacturing die assembly and punch holder and die holder therefor
PendingCN121696291AShaping toolsElectrode manufacturing processesElectrical batteryMechanical engineering
The present disclosure relates to a mold assembly for notching or cutting an electrode plate of a secondary battery and a method of manufacturing the same. The present disclosure provides a method of manufacturing a punch holder and a die holder of a die assembly for notching an electrode plate of a secondary battery, and a notching die assembly manufactured by the method, the method comprising: fixedly overlapping the punch holder and the die holder; simultaneously polishing side surfaces of the punch holder and the mold holder that overlap each other; setting a center point of each of the punch holder and the mold holder that overlap each other; and creating a reference hole through each of the punch holder and the mold holder overlapping each other at a position spaced apart from the center point.
Owner:SAMSUNG SDI CO LTD
Batteries, battery packs and electrical devices
ActiveCN116544569BSmall-sized cells cases/jacketsElectrolyte/reactants regenerationThermodynamicsBattery degradation
This invention discloses a battery, a battery pack, and an electrical device. The battery includes a casing, a core, a column, a first membrane, and a second membrane. The casing has an inner cavity, and the core is assembled within the inner cavity. The column supports the core to prevent it from collapsing. The column has a first cavity for storing a lithium replenishment medium and a second cavity for storing a fire-fighting medium. The first cavity has a first hole in its wall, and the second cavity has a second hole in its wall. The first membrane seals the first hole. When subjected to a first pressure, the first membrane ruptures, allowing the lithium replenishment medium in the first cavity to flow into the inner cavity through the first hole. The second membrane seals the second hole. When subjected to a second pressure, the second membrane ruptures, allowing the fire-fighting medium in the second cavity to flow into the inner cavity through the second hole. The second pressure is greater than the first pressure. The battery of this invention enables secondary lithium replenishment, improving the problems of short battery life and severe battery degradation. Furthermore, it has a fire-fighting function in the event of thermal runaway or rapid gas generation, ensuring the safety of battery use.
Owner:コーネックス ニュー エナジー カンパニー リミテッド