WO2024254742A1 - 电池及包含其的用电设备 - Google Patents

电池及包含其的用电设备 Download PDF

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Publication number
WO2024254742A1
WO2024254742A1 PCT/CN2023/099741 CN2023099741W WO2024254742A1 WO 2024254742 A1 WO2024254742 A1 WO 2024254742A1 CN 2023099741 W CN2023099741 W CN 2023099741W WO 2024254742 A1 WO2024254742 A1 WO 2024254742A1
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WO
WIPO (PCT)
Prior art keywords
edge
pole piece
layer
battery
electrode assembly
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Ceased
Application number
PCT/CN2023/099741
Other languages
English (en)
French (fr)
Inventor
李松
江南
曾巧
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Ningde Amperex Technology Ltd
Original Assignee
Ningde Amperex Technology Ltd
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Ningde Amperex Technology Ltd filed Critical Ningde Amperex Technology Ltd
Priority to PCT/CN2023/099741 priority Critical patent/WO2024254742A1/zh
Priority to CN202380099199.5A priority patent/CN121444241A/zh
Publication of WO2024254742A1 publication Critical patent/WO2024254742A1/zh
Priority to US19/417,564 priority patent/US20260100421A1/en
Anticipated expiration legal-status Critical
Ceased legal-status Critical Current

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Classifications

    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
    • H01M10/00—Secondary cells; Manufacture thereof
    • H01M10/05—Accumulators with non-aqueous electrolyte
    • H01M10/058—Construction or manufacture
    • H01M10/0585—Construction or manufacture of accumulators having only flat construction elements, i.e. flat positive electrodes, flat negative electrodes and flat separators
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
    • H01M10/00—Secondary cells; Manufacture thereof
    • H01M10/04—Construction or manufacture in general
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
    • H01M10/00—Secondary cells; Manufacture thereof
    • H01M10/04—Construction or manufacture in general
    • H01M10/0436—Small-sized flat cells or batteries for portable equipment
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
    • H01M50/00—Constructional details or processes of manufacture of the non-active parts of electrochemical cells other than fuel cells, e.g. hybrid cells
    • H01M50/10—Primary casings; Jackets or wrappings
    • H01M50/102—Primary casings; Jackets or wrappings characterised by their shape or physical structure
    • H01M50/105—Pouches or flexible bags
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
    • H01M50/00—Constructional details or processes of manufacture of the non-active parts of electrochemical cells other than fuel cells, e.g. hybrid cells
    • H01M50/10—Primary casings; Jackets or wrappings
    • H01M50/116—Primary casings; Jackets or wrappings characterised by the material
    • H01M50/117—Inorganic material
    • H01M50/119—Metals
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
    • H01M50/00—Constructional details or processes of manufacture of the non-active parts of electrochemical cells other than fuel cells, e.g. hybrid cells
    • H01M50/10—Primary casings; Jackets or wrappings
    • H01M50/116—Primary casings; Jackets or wrappings characterised by the material
    • H01M50/124—Primary casings; Jackets or wrappings characterised by the material having a layered structure
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
    • H01M50/00—Constructional details or processes of manufacture of the non-active parts of electrochemical cells other than fuel cells, e.g. hybrid cells
    • H01M50/50—Current conducting connections for cells or batteries
    • H01M50/543—Terminals
    • H01M50/547—Terminals characterised by the disposition of the terminals on the cells
    • H01M50/55—Terminals characterised by the disposition of the terminals on the cells on the same side of the cell
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
    • H01M2220/00—Batteries for particular applications
    • H01M2220/30—Batteries in portable systems, e.g. mobile phone, laptop
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
    • Y02E60/00—Enabling technologies; Technologies with a potential or indirect contribution to GHG emissions mitigation
    • Y02E60/10—Energy storage using batteries

Definitions

  • the present application relates to the field of energy storage devices, and in particular to a battery and an electrical device containing the battery.
  • the battery cells are mainly made by lamination and winding processes, and are widely used due to their many advantages, such as high rate, high energy density, etc.
  • the edges or corners of the battery cell's pole pieces may curl or warp.
  • One object of the present application is to provide a battery that can reduce the risk of curling and warping of pole pieces.
  • the present application provides a battery, comprising an electrode assembly, a shell for accommodating the electrode assembly, and a first layer comprising an insulating material.
  • the electrode assembly comprises a first pole piece and a second pole piece stacked and arranged adjacently.
  • the first pole piece comprises a first edge extending along a first direction, a second edge extending along a second direction perpendicular to the first direction, and a third edge extending along a third direction intersecting both the first direction and the second direction, the third edge comprising a first end connected to the first edge and a second end connected to the second edge.
  • the first layer is bonded to the first pole piece and comprises a first edge extending along the first direction and a second edge extending along the second direction and connected to the first edge.
  • the first edge and the second edge both comprise a portion overlapping the first pole piece, and the first edge further comprises a portion separated from the first edge and the second edge and connected to the third edge.
  • the fourth direction is the direction in which the first pole piece and the second pole piece are stacked, and in the fourth direction, the first pole piece is located at the outermost layer of the electrode assembly.
  • the first pole piece of the present invention is arranged along the first edge extending in directions perpendicular to each other.
  • the third side connected to the second side increases the contact area between the corner of the first pole piece and the shell, reduces the impact force of the corner of the electrode assembly on the shell, and thus reduces the risk of the shell cracking and leaking due to the impact of the electrode assembly.
  • the first layer is provided with the first edge and the second edge, both of which include a portion overlapping with the first pole piece, and the first edge also includes a portion separated from the first edge and the second edge and connected to the third edge, so that the first layer is bound in the fourth direction.
  • the third side of the corner of the first pole piece is reduced in the production process.
  • the battery of the present application reduces the risk of cracking and leaking of the shell due to the impact of the electrode assembly, while reducing the risk of curling and warping of the corner of the first pole piece.
  • the first distance from the first end to the first edge is smaller than the second distance from the second end to the first edge, thereby increasing the contact area between the first layer and the third edge and further reducing the risk of curling or warping at the corner where the third edge of the first pole piece is located.
  • a third distance from the first end to the second edge is greater than a fourth distance from the first end to the second end.
  • the first edge and the third side are connected at a first intersection, and in the first direction, a fifth distance from the first end to the first intersection is smaller than a sixth distance from the second end to the first intersection.
  • the first pole piece further includes a fourth side extending in the first direction and opposite to the first side in the second direction, and a fifth side extending in a fifth direction intersecting both the first and second directions and different from the third direction and connected to the third and fourth sides
  • the first layer further includes a third edge extending in the first direction and opposite to the first edge in the second direction; when viewed along the fourth direction, the third edge includes a portion overlapping the first pole piece and a portion separated from the second and fourth sides and connected to the fifth side.
  • the first layer is arranged in this way, so that the first layer constrains the fifth side constituting the corner of the first pole piece in the fourth direction, reducing the risk of curling and warping of the corner where the fifth side of the first pole piece is located.
  • the second pole piece when viewed along the fourth direction, includes a first exposed portion exposed from the first pole piece, so that the area of the second pole piece is larger than that of the first pole piece. area, reducing the risk of lithium plating on the negative electrode.
  • the first layer when observed along the fourth direction, also includes a portion overlapping the first exposed portion, thereby increasing the contact area between the first layer and the electrode assembly, thereby increasing the bonding force between the first layer and the electrode assembly and reducing the risk of the first layer falling off.
  • the electrode assembly also includes an isolation membrane disposed between the first pole piece and the second pole piece.
  • the isolation membrane When viewed along the fourth direction, the isolation membrane includes a second exposed portion exposed from the first pole piece and the second pole piece, so that the area of the isolation membrane is larger than the area of the first pole piece and the second pole piece, thereby reducing the risk of short circuit between the first pole piece and the second pole piece.
  • the first layer when viewed along the fourth direction, further includes a portion overlapping the second exposed portion.
  • the electrode assembly further includes a first surface and a second surface opposite to each other in the fourth direction and a first end surface connected between the first surface and the second surface, and the first layer is bonded to the first surface, the first end surface and the second surface.
  • the first pole piece is a positive pole piece
  • the second pole piece is a negative pole piece
  • the first layer is single-sided tape or double-sided tape.
  • the electrochemical device also includes a first metal plate and a second metal plate, the first metal plate is electrically connected to the first pole piece and extends out of the shell in a first direction, and the second metal plate is electrically connected to the second pole piece and extends out of the shell in the first direction; in the first direction, the first metal plate and the first layer are located on opposite sides of the electrode assembly, and the second metal plate and the first layer are located on opposite sides of the electrode assembly.
  • the shell is a packaging bag.
  • the outer surface of the first pole piece is a hollow foil area.
  • the second aspect of the present application also provides an electrical device, comprising any of the above-mentioned batteries.
  • FIG1 is a fourth direction view of a battery provided by one embodiment of the present application.
  • FIG2 is a fourth direction view of an electrode assembly provided by one embodiment of the present application from the first surface;
  • FIG3 is a fourth direction view of the electrode assembly provided by one embodiment of the present application from the second surface;
  • FIG4 is a cross-sectional view of the electrode assembly shown in FIG2 along line IV-IV;
  • FIG5 is a schematic diagram of the structure of an electrical device provided in one embodiment of the present application.
  • an embodiment of the present application provides a battery 100, including a housing 10, an electrode assembly 20 and an electrolyte contained in the housing 10, a first metal plate 40 and a second metal plate 50.
  • the first metal plate 40 and the second metal plate 50 are respectively electrically connected to the electrode assembly 20, and extend from the housing 10 to connect to external elements (not shown).
  • FIGS. 2 to 4 show that the battery 100 includes one electrode assembly 20. In other embodiments, in order to achieve high voltage output, the battery 100 may include multiple electrode assemblies 20.
  • the housing 10 may be a packaging bag obtained by packaging film packaging, that is, the battery 100 is a soft pack battery.
  • the housing includes a main body 11 and a packaging part 12, the main body 11 is provided with a receiving cavity for receiving the electrode assembly 20, and the packaging part 12 is formed by extending from the edge of the main body 11 and used to seal the main body 11.
  • the housing 10 is a metal housing, such as a steel shell or an aluminum shell.
  • the electrode assembly 20 includes a first pole piece 21 and a second pole piece 22 and an isolating film 23 disposed between the first pole piece 21 and the second pole piece 22.
  • the first pole piece 21, the isolating film 23 and the second pole piece 22 are alternately stacked in the fourth direction Z to form a laminated structure.
  • the isolating film 23 is used to reduce the risk of short circuit caused by direct contact between the first pole piece 21 and the second pole piece 22.
  • the isolating film 23 includes at least one of the following polymers: polyolefin, polyvinylidene fluoride, polyethylene terephthalate, cellulose, polyimide, polyamide, spandex and polyphenylene phthalate.
  • the first electrode sheet 21 includes a first current collector 211, a first active material layer 212 and The first pole tab 213 and the first active material layer 212 are disposed on at least one surface of the first current collector 211, and the first pole tab 213 is electrically connected to the first metal plate 40 and the first current collector 211.
  • the second pole sheet 22 includes a second current collector 221, a second active material layer 222, and a second pole tab 223.
  • the second active material layer 222 is disposed on at least one surface of the second current collector 221, and the second pole tab 223 is electrically connected to the second metal plate 50 and the second current collector 221.
  • the first pole tab 213 is formed by extending outward from one end of the first current collector 211 away from the first active material layer 212
  • the second pole tab 223 is formed by extending outward from one end of the second current collector 221 away from the second active material layer 222.
  • the first pole tab 213 can be welded to the area where the first current collector 211 leaves the second active material layer 222
  • the second pole tab 223 can be welded to the area where the second current collector 221 leaves the second active material layer 222, which is not limited in this application.
  • the first pole piece 21 is a positive pole piece
  • the second pole piece 22 is a negative pole piece.
  • the first current collector 211 includes at least one of Ni, Ti, Cu, Ag, Au, Pt, Fe, Al and their combinations
  • the first active material layer 212 includes a positive active material, which may include lithium cobaltate, lithium manganate, lithium nickelate, lithium nickel cobalt manganate, lithium iron phosphate, lithium manganese iron phosphate, lithium vanadium phosphate, lithium vanadium phosphate, lithium rich manganese-based materials, lithium nickel cobalt aluminum oxide and their combinations.
  • the second current collector 221 includes at least one of Ni, Ti, Cu, Ag, Au, Pt, Fe, Al and their combinations.
  • the second active material layer 222 includes a negative active material, which may be selected from at least one of graphite materials, alloy materials, lithium metal and their alloys.
  • the graphite material may be selected from at least one of artificial graphite and natural graphite; the alloy material may be selected from at least one of silicon, silicon oxide, tin and titanium sulfide.
  • the electrode assembly 20 further includes a first surface 201 and a second surface 202 that are opposite to each other in the fourth direction Z, and a first end surface 203 and a second end surface 204 that are opposite to each other in the first direction X.
  • the first end surface 203 and the second end surface 204 are both connected between the first surface 201 and the second surface 202.
  • the first pole piece 213 and the second pole piece 223 are disposed on the second end surface 204.
  • the end surfaces of the first pole piece 21, the second pole piece 22 and the isolation film 23 that are located on the opposite sides of the first pole piece 213 and the second pole piece 223 in the first direction X constitute the first end surface 203, and the first pole piece 21, the second pole piece 22 and the isolation film 23 constitute the first end surface 203.
  • the end surfaces of the pole piece 22 and the isolation film 23 on the side where the first pole ear 213 and the second pole ear 223 are located in the first direction X constitute the second end surface 204.
  • the outermost layer of the electrode assembly 20 in the fourth direction Z is the first pole piece 21, that is, the first surface 201 is the surface of the outermost first pole piece 21 on one side of the fourth direction Z, and the second surface 202 is the surface of the outermost first pole piece 21 on the other side of the fourth direction Z.
  • the outermost layer of the electrode assembly 20 in the fourth direction Z may be the second pole piece 22 and/or the isolation film 23, and this application does not limit this.
  • the battery 100 further includes a first layer 30 comprising an insulating material.
  • the first layer 30 covers at least a portion of the first surface 201, at least a portion of the second surface 202, and the entire first end surface 203, and is bonded to the first surface 201, the second surface 202, and the first end surface 203, and the first layer 30 constrains the electrode assembly 20 in the fourth direction Z.
  • the first layer 30 is a single-sided adhesive or a double-sided adhesive.
  • both the isolation film 23 and the first layer 30 are adhesive.
  • the isolation film 23 is bonded to the adjacent first pole piece 21 and the second pole piece 22, thereby constraining the electrode assembly 20 in the fourth direction Z.
  • the first layer 30 is directly bonded to the first surface 201 and the second surface 202.
  • Both the isolation film 23 and the first layer 30 may include at least one of the following polymers: a copolymer of vinylidene fluoride-hexafluoropropylene, a copolymer of vinylidene fluoride-trichloroethylene, polymethyl methacrylate, polyacrylic acid, polyacrylic acid salt, polyacrylonitrile, polyvinyl pyrrolidone, polyvinyl acetate, ethylene-vinyl acetate copolymer, polyimide, polyethylene oxide, cellulose acetate, cellulose acetate butyrate, cellulose acetate propionate, cyanoethyl amylopectin, cyanoethyl polyvinyl alcohol, cyanoethyl cellulose, cyanoethyl sucrose, amylopectin, sodium carboxymethyl cellulose, lithium carboxymethyl cellulose, acrylonitrile-styrene-butadiene copolymer, polyvinyl alcohol, polyviny
  • the first pole piece 21 is generally in the shape of a sheet, and includes a first side 21a extending along a first direction X, a second side 21b extending along a second direction Y, and a third side 21a extending along a third direction XY intersecting the first direction X and the second direction Y and connecting the first direction X and the second direction Y.
  • the third side 21c connects the first side 21a and the second side 21b
  • the fourth side 21d extends along the first direction X and is opposite to the first side 21a in the second direction Y
  • the fifth side 21e extends along the fifth direction YX intersecting the first direction X and the second direction Y and different from the third direction XY and connecting the second side 21b and the fourth side 21d
  • the sixth side 21f extends along the second direction Y and is opposite to the second side 21b in the first direction X.
  • the first direction X, the second direction Y and the fourth direction Z are perpendicular to each other.
  • the first pole ear 213 is formed by extending from the sixth side 21f along the first direction X
  • the second pole ear 223 is formed by extending from the edge of the second pole piece 22 located on the side of the sixth side 21f along the first direction X.
  • the angle between the first side 21a and the third side 21c and the angle between the second side 21b and the third side 21c are both obtuse angles.
  • the angle between the second side 21b and the fifth side 21e and the angle between the fourth side 21d and the fifth side 21e are both obtuse angles.
  • the third side 21c and the fifth side 21e constitute two corners of the first pole piece 21.
  • the third side 21c and the fifth side 21e are configured to form a corner in this embodiment, thereby increasing the area of the corner of the first pole piece 21, that is, the contact area between the corner of the first pole piece 21 and the shell 10, thereby reducing the impact force of the corner of the electrode assembly 20 on the shell 10, thereby reducing the risk of cracking of the packaging part 12 due to the impact of the electrode assembly 20 and causing leakage.
  • the pole piece is formed by cutting. After the cutting process, the corners of the pole piece are prone to curling and warping.
  • the present application configures a first layer 30 to improve the curling and warping problems of the pole piece caused by cutting.
  • the present application is also applicable to the curling and warping problems caused by pole pieces produced by other methods.
  • the first layer 30 is fixed to the first pole piece 21, and includes a first edge 30a extending along the first direction X, a second edge 30b extending along the second direction Y, and a third edge 30c extending along the first direction X and opposite to the first edge 30a in the second direction Y.
  • the second edge 30b connects the first edge 30a and the third edge 30c.
  • the first edge 30a and the first edge 21a are located on the same side of the electrode assembly 20 in the second direction Y, and the third edge 30c and the fourth edge 21d are located on the other side of the electrode assembly 20 in the second direction Y.
  • the first edge 30a and the second edge 30b both include a portion overlapping with the first pole piece 21, and the first edge 30a also includes a portion overlapping with the first side 21a and
  • the first layer 30 is arranged in this way so that the first layer 30 binds the third side 21c constituting the corner of the first pole piece 21 in the fourth direction Z, thereby reducing the risk of curling or warping of the corner where the third side 21c of the first pole piece 21 is located.
  • the third edge 30c when viewed along the fourth direction Z, includes a portion overlapping the first pole piece 21 and a portion separated from the second side 21b and the fourth side 21d and connected to the fifth side 21e.
  • the first layer 30 is arranged in this way, so that the first layer 30 constrains the fifth side 21e constituting the corner of the first pole piece 21 in the fourth direction Z, reducing the risk of curling or warping of the corner where the fifth side 21e of the first pole piece 21 is located.
  • the third side 21c includes a first end A1 connected to the first side 21a and a second end A2 connected to the second side 21b.
  • the fifth side 21e includes a third end A3 connected to the fourth side 21d and a fourth end A4 connected to the second side 21b.
  • the first distance D1 from the first end A1 to the first edge 30a is less than the second distance D2 from the second end A2 to the first edge 30a, which increases the contact area between the first layer 30 and the third side 21c, increases the adhesion between the first layer 30 and the third side 21c, and further reduces the risk of curling and warping of the corner where the third side 21c of the first pole piece 21 is located.
  • the seventh distance D7 from the third end A3 to the third edge 30c is less than the eighth distance D8 from the fourth end A4 to the third edge 30c, which increases the contact area between the first layer 30 and the fifth side 21e, and further reduces the risk of curling and warping of the corner where the fifth side 21e of the first pole piece 21 is located.
  • the third distance D3 from the first end A1 to the second edge 30b is greater than the fourth distance D4 from the first end A1 to the second end A2.
  • the ninth distance D9 from the third end A3 to the second edge 30b is greater than the tenth distance D10 from the third end A3 to the fourth end A4.
  • the first edge 30a is connected to the third side 21c at the first intersection O, and the third edge 30c is connected to the fifth side 21e at the second intersection O'.
  • the fifth distance D5 from the first end A1 to the first intersection O is smaller than the sixth distance D6 from the second end A2 to the first intersection O.
  • the eleventh distance D11 from the third end A3 to the second intersection O' is smaller than the twelfth distance D12 from the fourth end A4 to the second intersection O'.
  • the second electrode sheet 22 When viewed along the fourth direction Z, the second electrode sheet 22 includes a first exposed portion 22a exposed from the first electrode sheet 21, so that the area of the second electrode sheet 22 is larger than that of the first electrode sheet 21 , thereby reducing the risk of lithium plating at the negative electrode.
  • the first layer 30 also includes a portion overlapping with the first exposed portion 22a, thereby increasing the contact area between the first layer 30 and the electrode assembly 20, thereby increasing the bonding force between the first layer 30 and the electrode assembly 20, and reducing the risk of the first layer 30 falling off.
  • the isolation film 23 When viewed along the fourth direction Z, the isolation film 23 includes a second exposed portion 23a exposed from the first pole piece 21 and the second pole piece 22, so that the area of the isolation film 23 is larger than the area of the first pole piece 21 and the second pole piece 22, thereby reducing the risk of short circuit between the first pole piece 21 and the second pole piece 22.
  • the first layer 30 When viewed along the fourth direction Z, the first layer 30 also includes a portion overlapping with the second exposed portion 23a.
  • the first edge 30a When viewed along the fourth direction Z, the first edge 30a successively intersects with the third side 21c, the second exposed portion 23a and the first exposed portion 22a when extending away from the electrode assembly 20 along the first direction X, and the third edge 30c successively intersects with the fifth side 21e, the second exposed portion 23a and the first exposed portion 22a when extending away from the electrode assembly 20 along the first direction X.
  • an embodiment of the present application further provides an electric device 1, and the electric device 1 includes the above battery 100.
  • the electric device 1 of the present application can be, but is not limited to, a laptop computer, a pen-input computer, a mobile computer, an electronic book player, a portable phone, a portable fax machine, a portable copier, a portable printer, a head-mounted stereo headset, a video recorder, an LCD TV, a portable cleaner, a portable CD player, a mini CD, a transceiver, an electronic notepad, a calculator, a memory card, a portable recorder, a radio, a backup electronic source, a motor, a car, a motorcycle, a power bicycle, a bicycle, a lighting fixture, a toy, a game console, a clock, an electric tool, a flashlight, a camera, a large household battery and a lithium ion capacitor, etc.

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  • Chemical & Material Sciences (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • Electrochemistry (AREA)
  • General Chemical & Material Sciences (AREA)
  • Engineering & Computer Science (AREA)
  • Manufacturing & Machinery (AREA)
  • Inorganic Chemistry (AREA)
  • Secondary Cells (AREA)
  • Connection Of Batteries Or Terminals (AREA)

Abstract

一种电池及包含其的用电设备。电池，包括电极组件、收容电极组件的壳体和包含绝缘材料的第一层。电极组件包括沿第四方向堆叠且相邻设置的第一极片和第二极片。第一极片包括沿第一方向延伸的第一边、沿与第一方向垂直的第二方向延伸的第二边、以及沿与第一方向和第二方向均相交的第三方向延伸的第三边，第三边包括与第一边连接的第一端以及与第二边连接的第二端。第一层与第一极片粘接并包括沿第一方向延伸的第一边缘以及沿第二方向延伸并与第一边缘相接的第二边缘。沿第四方向观察，第一边缘以及第二边缘均包括与第一极片重叠的部分，第一边缘还包括与第一边和第二边相离且与第三边相接的部分。在第四方向上，第一极片位于电极组件的最外侧。

Description

电池及包含其的用电设备 技术领域
本申请涉及储能装置领域，尤其是涉及一种电池及包含其的用电设备。
背景技术
目前，电池中的电芯主要通过叠片和卷绕工艺制作而成，由于叠片电芯具有诸多优点而得到较为广泛的应用，例如高倍率、高能量密度等。然而在生产加工过程中，电芯的极片的边缘或边角可能会发生卷曲、翘起的情况。
发明内容
本申请的一个目的在于提出一种电池，其可降低极片发生卷曲、翘起的风险。
本申请第一方面提供一种电池，包括电极组件、收容电极组件的壳体和包含绝缘材料的第一层。电极组件包括堆叠且相邻设置的第一极片和第二极片。第一极片包括沿第一方向延伸的第一边、沿与第一方向垂直的第二方向延伸的第二边、以及沿与第一方向和第二方向均相交的第三方向延伸的第三边，第三边包括与第一边连接的第一端以及与第二边连接的第二端。第一层与第一极片粘接并包括沿第一方向延伸的第一边缘以及沿第二方向延伸并与第一边缘相接的第二边缘。沿与第一方向和第二方向均垂直的第四方向观察，第一边缘以及第二边缘均包括与第一极片重叠的部分，第一边缘还包括与第一边和第二边相离且与第三边相接的部分。第四方向为第一极片和第二极片堆叠的方向，在第四方向上，第一极片位于电极组件的最外层。
本申请的第一极片设置与沿相互垂直的方向延伸的第一边 和第二边连接的第三边，增大第一极片的边角与壳体的接触面积，减小电极组件的边角对壳体的冲击力，从而降低壳体因电极组件的冲击而开裂漏液的风险。而且，第一层设置第一边缘和第二边缘均包括与第一极片重叠的部分，且第一边缘还包括与第一边和第二边相离且与第三边相接的部分，使得第一层在第四方向上束缚构成第一极片的边角的第三边，降低生产过程中第一极片的第三边所在的边角发生卷曲、翘起的风险。因此，本申请的电池在降低壳体因电极组件撞击而开裂漏液的风险的同时，降低第一极片的边角发生卷曲、翘起的风险。
在一种可能的实现方式中，在第二方向上，第一端到第一边缘的第一距离小于第二端到第一边缘的第二距离，增大第一层与第三边的接触面积，进一步降低第一极片的第三边所在的边角发生卷曲、翘起的风险。
在一种可能的实现方式中，在第一方向上，第一端到第二边缘的第三距离大于第一端到第二端的第四距离。
在一种可能的实现方式中，第一边缘与第三边相接于第一交点，在第一方向上，第一端到第一交点的第五距离小于第二端到第一交点的第六距离。
在一种可能的实现方式中，第一极片还包括沿第一方向延伸且在第二方向上与第一边相对的第四边以及沿与第一方向和第二方向均相交且与第三方向不同的第五方向延伸且与第三边和第四边相接的第五边，第一层还包括沿第一方向延伸且在第二方向上与第一边缘相对的第三边缘；沿第四方向观察，第三边缘包括与第一极片重叠的部分以及与第二边和第四边相离且与第五边相接的部分。如此设置第一层，使第一层在第四方向上束缚构成第一极片的边角的第五边，降低第一极片的第五边所在的边角发生卷曲、翘起的风险。
在一种可能的实现方式中，沿第四方向观察，第二极片包括从第一极片露出的第一露出部，使第二极片的面积大于第一极片 的面积，降低负极析锂风险。
在一种可能的实现方式中，沿第四方向观察，第一层还包括与第一露出部重叠的部分，增大第一层与电极组件的接触面积，进而增大第一层与电极组件的粘结力，降低第一层脱落的风险。
在一种可能的实现方式中，电极组件还包括配置于第一极片和第二极片之间的隔离膜，沿第四方向观察，隔离膜包括从第一极片和第二极片露出的第二露出部，使隔离膜的面积大于第一极片和第二极片的面积，降低第一极片和第二极片接触短路的风险。
在一种可能的实现方式中，沿第四方向观察，第一层还包括与第二露出部重叠的部分。
在一种可能的实现方式中，电极组件还包括在第四方向上相对的第一表面和第二表面以及连接于第一表面和第二表面之间的第一端面，第一层与第一表面、第一端面和第二表面均粘接。
在一种可能的实现方式中，第一极片为正极极片，第二极片为负极极片。
在一种可能的实现方式中，第一层为单面胶或双面胶。
在一种可能的实现方式中，电化学装置还包括第一金属板和第二金属板，第一金属板与第一极片电连接并沿第一方向伸出壳体，第二金属板与第二极片电连接并沿第一方向伸出壳体；在第一方向上，第一金属板和第一层位于电极组件的相对侧，第二金属板和第一层位于电极组件的相对侧。
在一种可能的实现方式中，壳体为包装袋。
在一种可能的实现方式中，第一极片的外表面为空箔区。
本申请第二方面还提供一种用电设备，包括上述任一种电池。
附图说明
本申请的上述和/或附加的方面和优点从结合下面附图对实施方式的描述中将变得明显和容易理解，其中：
图1为本申请一实施方式提供的电池的第四方向视图；
图2为本申请一实施方式提供的电极组件自第一表面的第四方向视图；
图3为本申请一实施方式提供的电极组件自第二表面的第四方向视图；
图4为图2所示电极组件沿IV-IV的剖面图；
图5为本申请一实施方式提供的用电设备的结构示意图。
主要元件符号说明
电池                           100
壳体                           10
电极组件                       20
第一金属板                     40
第二金属板                     50
主体部                         11
封装部                         12
隔离膜                         23
第一极片                       21
第二极片                       22
第一集流体                     211
第一活性物质层                 212
第一极耳                       213
第二集流体                     221
第二活性物质层                 222
第二极耳                       223
第一表面                       201
第二表面                       202
第一端面                       203
第二端面                       204
第一层                         30
第一边                        21a
第二边                        21b
第三边                        21c
第四边                        21d
第五边                        21e
第六边                        21f
第一边缘                      30a
第二边缘                      30b
第三边缘                      30c
第一端                        A1
第二端                        A2
第三端                        A3
第四端                        A4
第一距离                      D1
第二距离                      D2
第三距离                      D3
第四距离                      D4
第五距离                      D5
第六距离                      D6
第七距离                      D7
第八距离                      D8
第九距离                      D9
第十距离                      D10
第十一距离                    D11
第十二距离                    D12
第一交点                      O
第二交点                      O’
第一露出部                    22a
第二露出部                    23a
用电设备                         1
第一方向                         X
第二方向                         Y
第三方向                         XY
第四方向                         Z
第五方向                         YX
具体实施方式
下面对本申请实施方式中的技术方案进行清楚、详细地描述，显然，所描述的实施方式是本申请一部分实施方式，而不是全部的实施方式。除非另有定义，本文所使用的所有的技术和科学术语与属于本申请的技术领域的技术人员通常理解的含义相同。在本申请的说明书中所使用的术语只是为了描述具体的实施方式的目的，不是旨在于限制本申请。
下文，将详细地描述本申请的实施方式。但是，本申请可体现为许多不同的形式，并且不应解释为限于本文阐释的示例性实施方式。而是，提供这些示例性实施方式，从而使本申请透彻的和详细的向本领域技术人员传达。
另外，为了简洁和清楚，在附图中，各种组件、层的尺寸或厚度可被放大。遍及全文，相同的数值指相同的要素。另外，应当理解，当要素A被称为“连接”要素B时，要素A可直接连接至要素B，或可能存在中间要素C并且要素A和要素B可彼此间接连接。
进一步，当描述本申请的实施方式时使用“可”指“本申请的一个或多个实施方式”。
本文使用的专业术语是为了描述具体实施方式的目的并且不旨在限制本申请。如本文所使用，单数形式旨在也包括复数形式，除非上下文另外明确指出。应理解，术语“包括”，当在本说明书中使用时，指存在叙述的特征、数值、步骤、操作、要素和 /或组分，但是不排除存在或增加一个或多个其他特征、数值、步骤、操作、要素、组分和/或其组合。应理解，尽管术语第一、第二、第三等可在本文用于描述各种要素、组分、区域、层和/或部分，但是这些要素、组分、区域、层和/或部分不应受这些术语的限制。这些术语用于区分一个要素、组分、区域、层或部分与另一要素、组分、区域、层或部分。因此，下面讨论的第一要素、组分、区域、层或部分可称为第二要素、组分、区域、层或部分，而不背离示例性实施方式的教导。
请参阅图1至图4，本申请一实施方式提供一种电池100，包括壳体10、容纳于壳体10中的电极组件20和电解液、第一金属板40和第二金属板50。第一金属板40和第二金属板50分别电连接于电极组件20，并从壳体10伸出以连接外部元件(图未示)。图2至图4示出电池100包括一个电极组件20。在另一些实施方式中，为了实现高电压输出，电池100可以包括多个电极组件20。
壳体10可以是采用封装膜封装得到的包装袋，即电池100为软包电池。具体地，壳体包括主体部11和封装部12，主体部11设有用于容纳电极组件20的容纳腔，封装部12自主体部11的边缘延伸形成并用于密封主体部11。在其他实施方式中，壳体10为金属壳体，例如为钢壳或铝壳等。
如图4所示，电极组件20包括第一极片21和第二极片22以及配置于第一极片21和第二极片22之间的隔离膜23。本实施方式中，第一极片21、隔离膜23和第二极片22在第四方向Z上交替堆叠形成叠片结构。隔离膜23用于降低第一极片21和第二极片22直接接触短路的风险。在一些实施方式中，隔离膜23包括以下聚合物中的至少一种：聚烯烃、聚偏氟乙烯、聚对苯二甲酸乙二醇酯、纤维素、聚酰亚胺、聚酰胺、氨纶和聚苯二甲酰苯二胺。
第一极片21包括第一集流体211、第一活性物质层212和 第一极耳213，第一活性物质层212设置于第一集流体211的至少一个表面，第一极耳213电连接第一金属板40和第一集流体211。第二极片22包括第二集流体221、第二活性物质层222和第二极耳223，第二活性物质层222设置于第二集流体221的至少一个表面，第二极耳223电连接第二金属板50和第二集流体221。本实施方式中，第一极耳213自第一集流体211离开第一活性物质层212的区域的一端向外延伸形成，第二极耳223自第二集流体221离开第二活性物质层222的区域的一端向外延伸形成。第一极耳213可以焊接于第一集流体211离开第二活性物质层222的区域，第二极耳223可以焊接于第二集流体221离开第二活性物质层222的区域，本申请不作限制。
在一些实施方式中，第一极片21为正极极片，第二极片22为负极极片。具体地，第一集流体211、包括Ni、Ti、Cu、Ag、Au、Pt、Fe、Al及其组合物中的至少一种，第一活性物质层212包括正极活性物质，正极活性物质可包括钴酸锂、锰酸锂、镍酸锂、镍钴锰酸锂、磷酸铁锂、磷酸锰铁锂、磷酸钒锂、磷酸钒氧锂、富锂锰基材料、镍钴铝酸锂及其组合物中的至少一种。第二集流体221包括Ni、Ti、Cu、Ag、Au、Pt、Fe、Al及其组合物中的至少一种。第二活性物质层222包括负极活性物质，负极活性物质可选自石墨类材料、合金类材料、锂金属及其合金中的至少一种。石墨类材料可选自人造石墨、天然石墨中的至少一种；合金类材料可选自硅、氧化硅、锡、硫化钛中的至少一种。
请参阅图4，电极组件20还包括在第四方向Z上相对的第一表面201和第二表面202以及在第一方向X上相对的第一端面203和第二端面204。第一端面203和第二端面204均连接于第一表面201和第二表面202之间。请参阅图2和图3，第一极耳213和第二极耳223设置于第二端面204。第一极片21、第二极片22和隔离膜23在第一方向X上位于第一极耳213和第二极耳223的相对侧的端面构成第一端面203，第一极片21、第二 极片22和隔离膜23在第一方向X上位于第一极耳213和第二极耳223所在的一侧的端面构成第二端面204。本实施方式中，电极组件20在第四方向Z上的最外层均为第一极片21，即第一表面201为位于第四方向Z的一侧的最外层的第一极片21的表面，第二表面202为位于第四方向Z的另一侧的最外层的第一极片21的表面。在其他实施方式中，电极组件20在第四方向Z上的最外层可以为第二极片22和/或隔离膜23，本申请并不作限制。
电池100还包括包含绝缘材料的第一层30。第一层30覆盖第一表面201的至少一部分、第二表面202的至少一部分和整个第一端面203，并与第一表面201、第二表面202和第一端面203均相粘接，且第一层30在第四方向Z上束缚电极组件20。在一些实施方式中，第一层30为单面胶或双面胶。
在一些实施方式中，隔离膜23和第一层30均具有粘性。隔离膜23与相邻的第一极片21和第二极片22粘接，从而在第四方向Z上束缚电极组件20。第一层30与第一表面201和第二表面202直接粘接。隔离膜23和第一层30均可以包括以下聚合物中的至少一种：偏二氟乙烯-六氟丙烯的共聚物、偏二氟乙烯-三氯乙烯的共聚物、聚甲基丙烯酸甲酯、聚丙烯酸、聚丙烯酸盐、聚丙烯腈、聚乙烯基吡咯烷酮、聚乙酸乙烯酯、乙烯-乙酸乙烯酯的共聚物、聚酰亚胺、聚氧化乙烯、乙酸纤维素、乙酸丁酸纤维素、乙酸丙酸纤维素、氰基乙基支链淀粉、氰基乙基聚乙烯醇、氰基乙基纤维素、氰基乙基蔗糖、支链淀粉、羧甲基纤维素钠、羧甲基纤维素锂、丙烯腈-苯乙烯-丁二烯的共聚物、聚乙烯醇、聚乙烯醚、聚四氟乙烯、聚六氟丙烯、苯乙烯-丁二烯的共聚物或聚偏二氟乙烯。这些聚合物能够产生较强的粘结作用。
请参阅图2和图3，第一极片21大致为片状，其包括沿第一方向X延伸的第一边21a、沿第二方向Y延伸的第二边21b、沿与第一方向X和第二方向Y均相交的第三方向XY延伸且连 接第一边21a和第二边21b的第三边21c、沿第一方向X延伸并在第二方向Y上与第一边21a相对的第四边21d、沿与第一方向X和第二方向Y均相交且与第三方向XY不同的第五方向YX延伸且连接第二边21b和第四边21d的第五边21e、以及沿第二方向Y延伸且在第一方向X上与第二边21b相对的第六边21f。第一方向X、第二方向Y和第四方向Z相互垂直。第一极耳213自第六边21f沿第一方向X延伸形成，第二极耳223自第二极片22位于第六边21f一侧的边缘沿第一方向X延伸形成。第一边21a与第三边21c的夹角以及第二边21b与第三边21c的夹角均为钝角。第二边21b与第五边21e的夹角以及第四边21d与第五边21e的夹角均为钝角。第三边21c和第五边21e构成第一极片21的两个边角。相较第二边21b与第一边21a和第三边21c直接连接形成第一极片21的两个边角的情形，本实施方式配置第三边21c和第五边21e构成边角，增大第一极片21的边角的面积，即第一极片21的边角与壳体10的接触面积，进而减小电极组件20的边角对壳体10的冲击力，从而降低封装部12因电极组件20的冲击而开裂导致漏液的风险。
本实施方式中，极片通过裁切形成，裁切加工后，极片的边角易发生卷曲、翘起。本申请配置第一层30，以改善极片因裁切导致的卷曲、翘起问题。本申请同样适用于其他方式生产的极片所产生的卷曲、翘起问题。第一层30固定于第一极片21，并包括沿第一方向X延伸的第一边缘30a、沿第二方向Y延伸的第二边缘30b、以及沿第一方向X延伸并在第二方向Y上与第一边缘30a相对的第三边缘30c。第二边缘30b连接第一边缘30a和第三边缘30c。第一边缘30a和第一边21a位于电极组件20在第二方向Y的同一侧，第三边缘30c和第四边21d位于电极组件20在第二方向Y的另一侧。
沿第四方向Z观察，第一边缘30a和第二边缘30b均包括与第一极片21重叠的部分，第一边缘30a还包括与第一边21a和 第二边21b相离、且与第三边21c相接的部分。如此设置第一层30，使第一层30在第四方向Z上束缚构成第一极片21的边角的第三边21c，降低第一极片21的第三边21c所在的边角发生卷曲、翘起的风险。
在一些实施方式中，沿第四方向Z观察，第三边缘30c包括与第一极片21重叠的部分以及与第二边21b和第四边21d相离且与第五边21e相接的部分。如此设置第一层30，使第一层30在第四方向Z上束缚构成第一极片21的边角的第五边21e，降低第一极片21的第五边21e所在的边角发生卷曲、翘起的风险。
第三边21c包括与第一边21a连接的第一端A1以及与第二边21b连接的第二端A2。第五边21e包括与第四边21d连接的第三端A3以及与第二边21b连接的第四端A4。在第二方向Y上，第一端A1到第一边缘30a的第一距离D1小于第二端A2到第一边缘30a的第二距离D2，增大第一层30与第三边21c的接触面积，增大第一层30与第三边21c的粘附力，进一步降低第一极片21的第三边21c所在的边角发生卷曲、翘起的风险。在第二方向Y上，第三端A3到第三边缘30c的第七距离D7小于第四端A4到第三边缘30c的第八距离D8，增大第一层30与第五边21e之间的接触面积，进一步降低第一极片21的第五边21e所在的边角发生卷曲、翘起的风险。
在第一方向X上，第一端A1到第二边缘30b的第三距离D3大于第一端A1到第二端A2的第四距离D4。在第一方向X上，第三端A3到第二边缘30b的第九距离D9大于第三端A3到第四端A4的第十距离D10。
第一边缘30a与第三边21c相接于第一交点O，第三边缘30c与第五边21e相接于第二交点O’。在第一方向X上，第一端A1到第一交点O的第五距离D5小于第二端A2到第一交点O的第六距离D6。在第一方向X上，第三端A3到第二交点O’的第十一距离D11小于第四端A4到第二交点O’的第十二距离D12。
请参阅图2和图3，沿第四方向Z观察，第二极片22包括从第一极片21露出的第一露出部22a，使第二极片22的面积大于第一极片21的面积，降低负极析锂风险。沿第四方向Z观察，第一层30还包括与第一露出部22a重叠的部分，增大第一层30与电极组件20的接触面积，进而增大第一层30与电极组件20的粘结力，降低第一层30脱落的风险。
请参阅图2和图3，沿第四方向Z观察，隔离膜23包括从第一极片21和第二极片22露出的第二露出部23a，使隔离膜23的面积大于第一极片21和第二极片22的面积，降低第一极片21和第二极片22接触短路的风险。沿第四方向Z观察，第一层30还包括与第二露出部23a重叠的部分。沿第四方向Z观察，第一边缘30a沿第一方向X远离电极组件20延伸时先后与第三边21c、第二露出部23a和第一露出部22a相交，第三边缘30c沿第一方向X远离电极组件20延伸时先后与第五边21e、第二露出部23a和第一露出部22a相交。
请参阅图5，本申请一实施方式还提供一种用电设备1，用电设备1包括如上电池100。本申请的用电设备1可以是，但不限于，笔记本电脑、笔输入型计算机、移动电脑、电子书播放器、便携式电话、便携式传真机、便携式复印机、便携式打印机、头戴式立体声耳机、录像机、液晶电视、手提式清洁器、便携CD机、迷你光盘、收发机、电子记事本、计算器、存储卡、便携式录音机、收音机、备电子源、电机、汽车、摩托车、助力自行车、自行车、照明器具、玩具、游戏机、钟表、电动工具、闪光灯、照相机、家庭用大型蓄电池和锂离子电容器等。
以上所揭露的仅为本申请较佳实施方式而已，当然不能以此来限定本申请，因此依本申请所作的等同变化，仍属本申请所涵盖的范围。

Claims (16)

  1. 一种电池，包括电极组件和收容所述电极组件的壳体，所述电极组件包括堆叠且相邻设置的第一极片和第二极片，其特征在于，
    所述第一极片包括沿第一方向延伸的第一边、沿与所述第一方向垂直的第二方向延伸的第二边、以及沿与所述第一方向和所述第二方向均相交的第三方向延伸的第三边，所述第三边包括与所述第一边连接的第一端以及与所述第二边连接的第二端；
    所述电池还包括包含绝缘材料并与所述第一极片粘接的第一层，所述第一层包括沿所述第一方向延伸的第一边缘以及沿所述第二方向延伸并与所述第一边缘相接的第二边缘；
    沿与所述第一方向和所述第二方向均垂直的第四方向观察，所述第一边缘以及所述第二边缘均包括与所述第一极片重叠的部分，所述第一边缘还包括与所述第一边和所述第二边相离且与所述第三边相接的部分；
    所述第四方向为所述第一极片和所述第二极片堆叠的方向，在所述第四方向上，所述第一极片位于所述电极组件的最外侧。
  2. 如权利要求1所述的电池，其特征在于，在所述第二方向上，所述第一端到所述第一边缘的第一距离小于所述第二端到所述第一边缘的第二距离。
  3. 如权利要求1所述的电池，其特征在于，在所述第一方向上，所述第一端到所述第二边缘的第三距离大于所述第一端到所述第二端的第四距离。
  4. 如权利要求1所述的电池，其特征在于，所述第一边缘与所述第三边相接于第一交点，在所述第一方向上，所述第一端到所述第一交点的第五距离小于所述第二端到所述第一交点的第六距离。
  5. 如权利要求1所述的电池，其特征在于，所述第一极片还包括沿第一方向延伸且在所述第二方向上与所述第一边相对的 第四边以及沿与所述第一方向和所述第二方向均相交且与所述第三方向不同的第五方向延伸且与所述第三边和所述第四边相接的第五边，所述第一层还包括沿所述第一方向延伸且在所述第二方向上与所述第一边缘相对的第三边缘；沿所述第四方向观察，所述第三边缘包括与所述第一极片重叠的部分以及与所述第二边和所述第四边相离且与所述第五边相接的部分。
  6. 如权利要求1所述的电池，其特征在于，沿所述第四方向观察，所述第二极片包括从所述第一极片露出的第一露出部。
  7. 如权利要求6所述的电池，其特征在于，沿所述第四方向观察，所述第一层还包括与所述第一露出部重叠的部分。
  8. 如权利要求1所述的电池，其特征在于，所述电极组件还包括配置于所述第一极片和所述第二极片之间的隔离膜，沿所述第四方向观察，所述隔离膜包括从所述第一极片和所述第二极片露出的第二露出部。
  9. 如权利要求8所述的电池，其特征在于，沿所述第四方向观察，所述第一层还包括与所述第二露出部重叠的部分。
  10. 如权利要求1所述的电池，其特征在于，所述电极组件还包括在所述第四方向上相对的第一表面和第二表面以及连接于所述第一表面和所述第二表面之间的第一端面，所述第一层与所述第一表面、所述第一端面和所述第二表面均粘接。
  11. 如权利要求1所述的电池，其特征在于，所述第一极片为正极极片，所述第二极片为负极极片。
  12. 如权利要求1所述的电池，其特征在于，所述第一层为单面胶或双面胶。
  13. 如权利要求1所述的电池，其特征在于，所述电化学装置还包括第一金属板和第二金属板，所述第一金属板与所述第一极片电连接并沿所述第一方向伸出所述壳体，所述第二金属板与所述第二极片电连接并沿所述第一方向伸出所述壳体；在所述第一方向上，所述第一金属板和所述第一层位于所述电极组件的相 对侧，所述第二金属板和所述第一层位于所述电极组件的相对侧。
  14. 如权利要求1所述的电池，其特征在于，所述壳体为包装袋。
  15. 如权利要求1所述的电池，其特征在于，在所述第一方向上，所述第一极片的外表面为空箔区。
  16. 一种用电设备，其特征在于，包括如权利要求1至15中任一项所述的电池组件。
PCT/CN2023/099741 2023-06-12 2023-06-12 电池及包含其的用电设备 Ceased WO2024254742A1 (zh)

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Citations (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2010080324A (ja) * 2008-09-26 2010-04-08 Asahi Kasei Corp 電極積層体及びその製造方法
CN103947026A (zh) * 2012-05-29 2014-07-23 Lg化学株式会社 具有不同形状的角部并包括台阶的电极组件以及包括该电极组件的二次电池、电池组和设备
CN104303332A (zh) * 2012-04-05 2015-01-21 株式会社Lg化学 具有阶梯状结构的电池单体
CN105122535A (zh) * 2013-04-16 2015-12-02 株式会社丰田自动织机 蓄电装置
CN207233885U (zh) * 2017-09-12 2018-04-13 广东国光电子有限公司 一种非标异形锂离子电池
JP2018142513A (ja) * 2017-02-28 2018-09-13 株式会社豊田自動織機 蓄電装置
CN219066902U (zh) * 2022-10-24 2023-05-23 汇洋世纪新能源科技有限公司 一种叠片电芯及电池

Patent Citations (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2010080324A (ja) * 2008-09-26 2010-04-08 Asahi Kasei Corp 電極積層体及びその製造方法
CN104303332A (zh) * 2012-04-05 2015-01-21 株式会社Lg化学 具有阶梯状结构的电池单体
CN103947026A (zh) * 2012-05-29 2014-07-23 Lg化学株式会社 具有不同形状的角部并包括台阶的电极组件以及包括该电极组件的二次电池、电池组和设备
CN105122535A (zh) * 2013-04-16 2015-12-02 株式会社丰田自动织机 蓄电装置
JP2018142513A (ja) * 2017-02-28 2018-09-13 株式会社豊田自動織機 蓄電装置
CN207233885U (zh) * 2017-09-12 2018-04-13 广东国光电子有限公司 一种非标异形锂离子电池
CN219066902U (zh) * 2022-10-24 2023-05-23 汇洋世纪新能源科技有限公司 一种叠片电芯及电池

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