WO2023185285A1 - Batterie - Google Patents

Batterie Download PDF

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Publication number
WO2023185285A1
WO2023185285A1 PCT/CN2023/075910 CN2023075910W WO2023185285A1 WO 2023185285 A1 WO2023185285 A1 WO 2023185285A1 CN 2023075910 W CN2023075910 W CN 2023075910W WO 2023185285 A1 WO2023185285 A1 WO 2023185285A1
Authority
WO
WIPO (PCT)
Prior art keywords
battery core
receiving member
side plate
tab
battery
Prior art date
Application number
PCT/CN2023/075910
Other languages
English (en)
Chinese (zh)
Inventor
卫志达
彭宁
Original Assignee
珠海冠宇电池股份有限公司
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 珠海冠宇电池股份有限公司 filed Critical 珠海冠宇电池股份有限公司
Publication of WO2023185285A1 publication Critical patent/WO2023185285A1/fr

Links

Classifications

    • 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
    • H01M50/552—Terminals characterised by their shape
    • 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
    • H01M10/052—Li-accumulators
    • H01M10/0525—Rocking-chair batteries, i.e. batteries with lithium insertion or intercalation in both electrodes; Lithium-ion batteries
    • 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
    • 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
    • H01M50/172—Arrangements of electric connectors penetrating the casing
    • 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
    • H01M50/183—Sealing members
    • H01M50/186—Sealing members characterised by the disposition of the sealing members
    • H01M50/188—Sealing members characterised by the disposition of the sealing members the sealing members being arranged between the lid and terminal
    • 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
    • H01M50/531—Electrode connections inside a battery casing
    • 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
    • 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
    • Y02P—CLIMATE CHANGE MITIGATION TECHNOLOGIES IN THE PRODUCTION OR PROCESSING OF GOODS
    • Y02P70/00—Climate change mitigation technologies in the production process for final industrial or consumer products
    • Y02P70/50—Manufacturing or production processes characterised by the final manufactured product

Definitions

  • the invention relates to the field of electrochemical energy storage devices, and in particular to a battery.
  • lithium-ion batteries have the advantages of large capacity, small size, light weight and environmental protection, and have been widely used in industries such as digital electronic products and electric vehicles.
  • the invention provides a battery that can improve the sealing performance, safety and other properties of the battery.
  • the invention provides a battery, which includes: a casing, which is surrounded by a cavity; the casing includes a first side plate; a battery core located in the cavity, and the battery core is provided with a first tab; and an external connection piece. , electrically connected to the first tab, the external piece is located on the side of the first side plate away from the cavity, the external piece includes an outwardly protruding pole, the first side
  • the plate includes a second through hole corresponding to the pole, and the pole is connected to the first tab through the second through hole; along the direction from the first side plate to the battery core , the diameter of the pole shows an increasing or decreasing trend.
  • the battery further includes a first receiving member located between the first side plate and the battery core, and the first receiving member is electrically connected to the first tab, so The first receiving member is provided with a first through hole corresponding to the pole, and the pole is connected to the first receiving member through the first through hole.
  • the first through hole of the first receiving member includes a first hole section and a second hole section connected to each other, and the second hole section is located near the first hole section and close to the first hole section.
  • One side of the battery core; one end of the pole close to the battery core extends outward to form an extension portion corresponding to the second hole section.
  • an end surface of the pole close to the battery core is flush with a side surface of the first receiving member close to the battery core.
  • one end of the pole close to the battery core extends out of the first through hole, and extends outward along the circumferential direction of the first through hole to form a connection with the first socket.
  • the parts are close to the outer extension of one side surface of the battery core.
  • a first insulation piece is further provided between the external piece and the first side plate, and a second insulation piece is further provided between the first receiving member and the first side plate.
  • sheet, the pole penetrates the first insulating sheet and the second insulating sheet; and/or, a first insulating layer is provided between the pole and the first side plate; and/or, A second insulation layer is provided between the first receiving member and the battery core.
  • the housing further includes a sixth side plate connected to the first side plate;
  • the second insulating sheet includes a first insulating part and a second insulating part, and the first insulating
  • the pole is located between the first receiving part and the first side plate, and the pole penetrates the first insulating part;
  • the second insulating part is located between the first receiving part and the sixth side between the boards.
  • the projection of the second insulating part on the sixth side plate covers the projection of the first receiving member on the sixth side plate; and/or the first The projection of the insulating part on the first side plate covers the projection of the first receiving member on the first side plate; and/or, the gap between the first insulating part and the second insulating part
  • the included angle range is 80° ⁇ 120°.
  • the projection of the first insulating sheet on the first side panel covers the projection of the external connecting sheet on the first side panel.
  • the battery core includes a plurality of stacked electrode sheets, and the battery core has a first side and a second side arranged oppositely, wherein the second insulating layer extends to the electrode sheet.
  • the first side of the core is bonded to the electrode sheet located on the first side of the battery core, and/or the second insulating layer extends to the second side of the battery core and is bonded to the electrode sheet located on the first side of the battery core.
  • the electrode sheet on the second side is bonded.
  • the projection of the first receiving member on the first side plate does not overlap with the projection of the first tab on the first side plate.
  • the housing includes a second side plate connected to the first side plate, and the projection of the first receiving member on the second side plate is in line with the first pole.
  • the projections of the ears on the second side panel at least partially overlap.
  • the end surface of the side of the battery core provided with the first tab is parallel to the thickness direction of the battery core; and/or, the first tab is away from the battery core.
  • the distance from one side to the side where the first tab is connected to the battery core is no longer than the length of the first receiving member along the direction from the first side plate to the first tab; and /Or, along the direction from the first side plate to the first tab, the length of the first receiving member is 1mm-3mm.
  • the battery further includes a first middle piece located between the battery core and the first side plate, and the first middle piece is connected to the first tab and the first side plate respectively.
  • the first receiving piece is connected.
  • the first intermediate piece includes a first connecting piece connected to the first receiving member, and a third connecting piece connected to a side of the first tab away from the battery core.
  • Four connecting pieces are provided.
  • the first middle piece further includes a first connection component connected to the first connection piece and the fourth connection piece respectively;
  • the first connection component includes a second connection piece and a third connection piece.
  • Three connecting pieces; the second connecting piece is located between the first receiving member and the battery core; in the direction from the first receiving member to the first tab, the third connecting piece Located between the first pole tab and the first receiving member; the first connecting piece, the second connecting piece, the third connecting piece, and the fourth connecting piece are connected in sequence.
  • the first connecting piece includes a first connecting portion connected to the first receiving member and a second connecting portion extending along the extending direction of the first side plate, and the The second connecting part is connected to the fourth connecting piece.
  • a sixth insulating layer is provided on a side of the first connecting piece facing away from the first receiving member; and/or, the first receiving member is opposite to the first connecting piece.
  • a first included angle is formed between the connecting side and the side connecting the fourth connecting piece and the first tab, and the range of the first included angle is 80-120°; and/or, the The first connecting piece is welded to the first receiving member; and/or the battery core includes a plurality of stacked electrode sheets, and the side of the first connecting piece that is in contact with the first receiving member and the The surfaces of the electrode sheets are parallel.
  • the battery further includes a third insulating layer located between the first middle member and the first side plate.
  • the third insulating layer includes a first portion located on a side of the fourth connecting piece facing away from the first tab.
  • the battery core includes a plurality of stacked electrode sheets; the battery core has a first side and a second side arranged oppositely; the third insulating layer further includes a layer from the first part. a second part extending from an end close to the first side of the battery core in a direction close to the battery core; and from an end of the first part close to the second side of the battery core in a direction close to the battery core The extension forms the third part.
  • the projection of the first tab in the thickness direction of the battery core is located within the projection of the second part of the third insulating layer in the thickness direction of the battery core, and /or,
  • the projection of the first tab in the thickness direction of the battery core is located within the projection of the third part of the third insulating layer in the thickness direction of the battery core; and/or the first pole
  • the projection of the ear in the length direction of the battery core is located within the projection of the first part of the third insulating layer in the length direction of the battery core.
  • the second part of the third insulating layer extends to the first side of the battery core and is bonded to the electrode sheet located on the first side of the battery core; and/or, the The third part of the third insulating layer extends to the second side of the battery core and is bonded to the electrode sheet located on the second side of the battery core.
  • the battery core includes a plurality of stacked electrode sheets, the electrode sheets include a first current collector, and the first tab is disposed on the first current collector; along the In the direction from the first receiving member to the battery core, the distance between the first receiving member and the first current collector is less than 1 mm.
  • the battery core is further provided with a second tab, and the second tab has an opposite polarity to the first tab;
  • the battery further includes a second receiving member, and the The second receiving member is electrically connected to the second tab.
  • the second receiving member is disposed between the first side plate and the battery core.
  • the second receiving member is on the first side plate. The projection of does not overlap with the projection of the second tab on the first side plate.
  • the housing includes a second side plate connected to the first side plate, and the projection of the first pole on the second side plate is consistent with the second pole.
  • the projection of the ear on the second side panel at least partially overlaps; and/or the projection of the second receiving member on the second side panel and the projection of the second pole tab on the second side panel The projections at least partially overlap.
  • the battery further includes a first receiving member located between the first side plate and the battery core, and the first receiving member is electrically connected to the first tab, so The first pole tab and the second pole tab are located between the first receiving member and the second receiving member; and/or, the second receiving member is welded to the first side plate; and/or, Place The distance from the side of the second tab away from the battery core to the side of the second tab connected to the battery core is no longer than the distance from the second receiving member along the first side plate to the side of the battery core.
  • the length in the direction of the second pole tab; and/or, along the direction from the first side plate to the second pole tab, the length of the second receiving member is 1mm-4mm; and/or, along the In the direction from the first side plate to the second pole tab, the length of the second receiving member is equal to or greater than the length of the first receiving member.
  • the battery core has a first surface and a second surface arranged oppositely, and a side surface located between the first surface and the second surface, and at least one side surface of the battery core At least part of the area is provided with a protective adhesive layer.
  • the battery core includes a plurality of stacked electrode sheets, and the protective adhesive layer of the battery core extends to the first surface of the battery core and is in contact with the first surface of the battery core.
  • the electrode sheet is bonded and/or extended to the second side of the battery core and bonded to the electrode sheet located on the second side of the battery core.
  • the protective adhesive layer is provided with one or more fifth through holes.
  • the first tab is a positive tab or a negative tab; and/or, the battery core includes a laminated battery core or a wound battery core.
  • the first receiving member is electrically connected to the first pole, so that the external connecting piece is connected to the first receiving member through the pole, thereby eliciting the electrical properties of the first pole, wherein the control pole has a tapered structure (i.e. Along the direction from the first side plate to the first socket, the diameter of the pole shows an increasing or decreasing trend), which can improve the connection stability and sealing performance between the external piece, the first side plate and the first socket. , thereby improving the sealing, safety, stability and service life of the battery.
  • Figure 1 is a schematic diagram of the connection structure between the first receiving member and the housing according to an embodiment of the present invention
  • Figure 2 is a schematic diagram of the connection structure between the first receiving member and the housing according to an embodiment of the present invention
  • Figure 3 is a schematic diagram of the connection structure between the first receiving member and the housing according to an embodiment of the present invention
  • Figure 4 is a schematic structural diagram of an external connecting piece and a pole according to an embodiment of the present invention.
  • Figure 5 is a schematic diagram of the connection structure between the first receiving member and the housing according to an embodiment of the present invention.
  • Figure 6 is a schematic diagram of the connection structure between the first receiving member and the housing according to an embodiment of the present invention.
  • Figure 7 is a schematic structural diagram of a second insulating sheet according to an embodiment of the present invention.
  • Figure 8 is a schematic diagram of the connection structure between the cell tabs and the receiving member according to one embodiment of the present invention.
  • Figure 9 is a schematic diagram showing the connection structure of the first tab and the first receiving member according to an embodiment of the present invention.
  • Figure 10 is a schematic diagram showing the connection structure of the first tab, the first receiving member and the third insulating layer according to an embodiment of the present invention
  • Figure 11 is a schematic structural diagram of a battery core package according to an embodiment of the present invention.
  • Figure 12 is a schematic structural diagram of a battery core package according to an embodiment of the present invention.
  • Figure 13 is a schematic structural diagram of a battery according to an embodiment of the present invention.
  • the terms “set”, “installation”, “connection”, “connected”, “connected”, etc. should be understood in a broad sense.
  • it can be a fixed connection or a fixed connection.
  • It can be a detachable connection or an integrated connection; it can be a mechanical connection, an electrical connection, or a communication connection (network connection); it can be a direct connection, an indirect connection through an intermediary, or two components are internally connected.
  • the above-mentioned specific meanings in the present invention can be understood in specific situations.
  • Batteries are commonly used electrochemical energy storage devices. They generally include a casing, a battery core packaged in a cavity surrounded by the casing, etc.
  • the battery core is provided with tabs (such as the first tab below), which require A conductive component (such as an external piece with a pole as described below) penetrates the case to lead out the electricity from the tab in the cavity to form an electrode of the battery.
  • a conductive component such as an external piece with a pole as described below
  • the connection structure of conventional conductive components has poor sealing.
  • an embodiment of the present invention provides a battery, as shown in Figures 1 to 13.
  • the battery includes: a housing 1, which is surrounded by a cavity; the housing 1 includes a first side plate 11; a battery core 2, Located in the cavity, the battery core 2 is provided with a first tab 21; an external connecting piece 41 is electrically connected to the first tab 21.
  • the external connecting piece 41 is located on the side of the first side plate 11 away from the cavity.
  • the external connecting piece 41 includes an external
  • the poles 42 formed by protrusions and the first side plate 11 include second through holes 110 corresponding to the poles 42.
  • the poles 42 communicate with the first pole through the second through holes 110 (that is, through the first side plate 11).
  • the ears 21 are connected; along the direction from the first side plate 11 to the battery core 2, the diameter of the pole 42 shows an increasing or decreasing trend, thereby improving the sealing performance of the battery.
  • the pole posts 42 are generally formed to protrude outward along the thickness direction of the external connection piece 41 , that is, the axial direction of the pole pole 42 is parallel to the thickness direction of the external connection piece 41 .
  • the cross section of the pole 42 perpendicular to the axial direction of the pole 42 is circular, and the straight section of the pole 42 is circular.
  • the diameter is the diameter of the cross section of the pole 42 perpendicular to the axial direction of the pole 42 .
  • the pole 42 passes through the second through hole 110 to achieve penetration of the first side plate 11 .
  • the battery also includes a first receiving member 31 electrically connected to the first tab 21.
  • the first receiving member 31 is disposed between the first side plate and the battery core 2; the first receiving member 31 is provided with a corresponding pole 42.
  • the pole 42 is connected to the first receiving member 31 through the first through hole 310 provided, and the second through hole 110 and the first through hole 310 may be coaxially arranged.
  • the pole 42 The diameter of the diameter shows a changing trend (ie, an increasing or decreasing trend), and the change may be a gradual change, that is, a uniform increase or decrease with substantially the same amplitude.
  • the aperture (diameter) of the second through hole 110 and the first through hole 310 changes correspondingly with the diameter of the pole 42 .
  • the diameter of the pole 42 gradually increases.
  • the diameters of the second through hole 110 and the first through hole 310 also gradually increase; along the direction from the first side plate 11 to the first receiving member 31, the diameter of the pole 42 gradually decreases, at this time the diameter of the pole 42 gradually decreases.
  • the diameters of the second through hole 110 and the first through hole 310 are also gradually reduced.
  • the first through hole 310 of the first receiving member 31 includes a first hole segment and a second hole segment that are connected to each other, and the second hole segment is located close to the first hole segment.
  • an end of the pole 42 close to the battery core 2 extends outward to form an extension 43 corresponding to the second hole section.
  • first hole section and the second hole section can be arranged coaxially, the first hole section and the second hole section are both circular through holes, and the diameter of the second hole section is larger than that of the first hole section and the second hole section.
  • the diameter of one end of the connection preferably, the diameter of the second hole segment is larger than the diameter of the first hole segment, and the axial projection of the second hole segment perpendicular to the first through hole 310 can cover the first hole segment perpendicular to the first through hole 310.
  • the cross-sectional area of the external piece 41 perpendicular to the axial direction of the pole 42 can be larger than the cross-sectional area of the pole 42 perpendicular to the axial direction of the pole 42 , and the projection of the external piece 41 perpendicular to the axial direction of the pole 42 covers the pole.
  • the projection of the pole 42 perpendicular to the axial direction of the pole 42, the cross-sectional area of the extension 43 perpendicular to the pole 42 is larger than the cross-sectional area of the pole 42 perpendicular to the axial direction of the pole 42, the extension 43 is perpendicular to the pole 42
  • the axial projection covers the axial projection of the pole 42 perpendicular to the pole 42
  • the cross-sectional area of the external piece 41 perpendicular to the axial direction of the pole 42 is larger than the cross-sectional area of the extension 43 perpendicular to the axial direction of the pole 42
  • the projection of the external piece 41 perpendicular to the axial direction of the pole 42 covers the projection of the extension 43 perpendicular to the axial direction of the pole 42
  • the cross-sectional area of the extension 43 perpendicular to the axial direction of the pole 42 is substantially equal to the second hole section With a cross-sectional area perpendicular to the axial direction of the pole 42, the extension 43 is engaged
  • an end surface of the pole 42 close to the battery core 2 may be flush with a surface of the first receiving member 31 close to the battery core 2 .
  • the thickness of the extension portion 43 along the axial direction of the first through hole 310 is substantially equal to the depth of the second hole segment along the axial direction of the first through hole 310 , whereby the extension portion 43 is buckled in the second hole section, and the end surface of the extension portion 43 close to the battery core 2 is flush with the surface of the first receiving member 31 facing the battery core 2, which not only ensures the connection between the pole post 42 and the first receiving member 31
  • the bonding strength is high, and the pole post 42 is prevented from interfering with the first pole lug 21 or the connection between the first connecting piece 51 and the first receiving member 31 .
  • the end of the pole 42 close to the battery core 2 can also extend out of the first through hole 310 and extend outward along the circumferential direction of the first through hole 310 to form a side surface of the first receiving member 31 close to the battery core 2
  • the connected extension part 43 is the pole 42
  • the end surface close to the battery core 2 is not flush with the side surface of the first receiving member 31 facing the battery core 2 , but is located between the first receiving member 31 and the battery core 2 .
  • the epitaxial sheet, pole post 42, and epitaxial portion 43 can be integrally formed, and they can be made of metal.
  • the first receiving member 31 and the first side plate 11 can be riveted through rivets. After riveting, the rivets are located at One end of the first side plate 11 away from the cavity forms an external piece 41 , the other end forms an extension 43 , and the portion between the two ends forms a pole 42 , and the formed pole 42 is, for example, a tapered structure.
  • the first tab 21 can be electrically connected to the housing 1 , and at this time, the external connecting piece 41 , the pole post 42 , and the first receiving member 31 can be in direct contact with the housing 1 .
  • the first tab 21 is insulated from the casing 1 , specifically by providing an insulating sheet (insulating layer).
  • a first insulating sheet 6 is disposed between the external piece 41 and the first side plate 11, and the first receiving member 31 and There is also a second insulating sheet 7 between the first side plates 11, that is, the external connecting sheet 41, the first insulating sheet 6, the first side plate 11, the second insulating sheet 7, and the first receiving member 31 are stacked in sequence.
  • 42 penetrates the first insulating sheet 6 and the second insulating sheet 7;
  • a first insulating layer 81 is provided between the pole 42 and the first side plate 11, whereby the external connecting piece 41, the pole 42, and the first receiving member 31 It is electrically connected to the first tab 21 and insulatedly connected to the first side plate 11 (casing 1).
  • the difference between the diameter of the first through hole 310 and the diameter of the pole 42 is substantially equal to the width of the first insulating layer 81 along the circumferential direction of the first through hole 310 .
  • the circumferential direction of the hole 310 is perpendicular to the axial direction of the first through hole 310 .
  • the first insulating layer 81 can be integrally formed with the first insulating sheet 6 , and the first insulating layer 81 protrudes outward from the side of the first insulating sheet 6 close to the first side plate 11 (into the second through hole 110 protrusions); or the first insulating layer 81 can be integrally formed with the second insulating sheet 7, and the first insulating layer 81 protrudes outward from the side of the second insulating sheet close to the first side plate (toward the second through hole 110 Inner bulge) is formed.
  • the first insulating sheet 6 is provided with a third through hole 60, and the pole post 42 passes through the third through hole 60 to penetrate the first insulating sheet 6; the second insulating sheet 7 is provided with a fourth through hole 70, The pole post 42 passes through the fourth through hole 70 to penetrate the second insulating sheet 7 .
  • the pole 42 passes through the third through hole 60 , the second through hole 110 , the fourth through hole 70 , and the first through hole 310 in order to achieve connection with the first receiving member 31 .
  • the third through hole 60 , the second through hole 110 , the fourth through hole 70 and the first through hole 310 may be coaxially arranged.
  • the projection of the first insulating sheet 6 on the first side panel 11 can cover the projection of the external sheet 41 on the first side panel 11 (i.e. The projection of the external piece 41 on the first side plate 11 is within the projection of the first insulating piece 6 on the first side plate 11 ), thereby preventing the external piece 41 from contacting the housing 1 and ensuring the insulation of the housing.
  • the projection of the second insulating sheet 7 on the first side panel 11 can cover the projection of the first receiving member 31 on the first side panel 11 (that is, the projection of the first receiving member 31 on the first side panel 11 is The second insulating sheet 7 is within the projection of the first side plate 11 ), thereby preventing the first receiving member 31 from contacting the housing 1 and ensuring the insulation of the housing.
  • battery performance such as safety and stability can be further improved.
  • the housing 1 also includes a sixth side plate 16 connected to the first side plate 11.
  • the second insulating sheet 7 can be an L-shaped structure, which includes a connected first insulating part 71 and a third insulating part 71.
  • the second insulating part 72, the first insulating part 71 is located at the Between a receiving member 31 and the first side plate 11, the pole 42 penetrates the first insulating part 71, that is, the first insulating part 71 is provided with a fourth through hole 70 corresponding to the pole 42, and the second insulating part 72 is located between the first receiving member 31 and the sixth side plate 16. Therefore, the second insulating part 72 can provide support for the first receiving member 31, and can connect the first receiving member 31 with the third side of the housing 1.
  • the six side plates 16 are insulated to improve the safety and stability of the battery.
  • the projection of the first insulating part 71 on the first side panel 11 can cover the projection of the first receiving member 31 on the first side panel 11 (that is, the projection of the first receiving member 31 on the first side panel 11 is The projection of the first insulating part 71 on the first side panel 11), and the projection of the second insulating part 72 on the sixth side panel 16 can cover the projection of the first receiving member 31 on the sixth side panel 16 (i.e. The projection of the first receiving part 31 on the sixth side plate 16 is within the projection of the second insulating part 72 on the sixth side plate 16) to prevent the first receiving part 31 from contacting the first side plate 11 or the sixth side plate. 16 contacts.
  • the surface of the sixth side plate 16 is parallel to the surface of the electrode sheet; the surface of the sixth side plate 16 and the first side plate 11 are not parallel, for example, perpendicular; the surface of the sixth side plate 16 and the second side plate 12 are not parallel. , such as vertical; the sixth side plate 16 may be, for example, a bottom side plate (or bottom plate).
  • an included angle is formed between the surface of the first insulating part 71 and the first receiving member 31 and the surface of the second insulating part 72 and the first receiving member 31.
  • the included angle may range from 80° to 80°. 140°, such as 80°, 90°, 100°, 110°, 120°, 130°, 140°, etc., that is, the two are not parallel, such as perpendicular.
  • the included angle formed between the first insulating part 71 and the second insulating part 72 (the plane where they are located) may range from 80° to 140°, such as 80°, 90°, 100°, 110°, 120°, 130°. , 140°, etc., that is, they are not parallel, such as perpendicular.
  • the projection of the first receiving member 31 on the first side plate 11 does not overlap with the projection of the first tab 21 on the first side plate 11 (that is, the first receiving member 31 is parallel to the first side plate 11 ).
  • the projection of the extension direction of the first side plate 11 does not overlap with the projection of the first tab 21 parallel to the extension direction of the first side plate 11). Therefore, the first tab 21 and the first receiving member 31 do not extend along the direction of the battery core. 2 is distributed in the direction from the first side plate 11 to the battery core 2.
  • the distance from the first side plate 11 to the battery core 2 is a 1
  • the first tab 21 The distance from the side connected to the battery core 2 to the side of the first tab 21 facing away from the battery core 2 (that is, the side facing the first side plate 11 ) is b 1
  • the first receiving member 31 faces the side of the battery core 2
  • One side (that is, the side away from the first side plate 11 ) to the side of the first receiving member 31 facing the first side plate 11 (that is, the first receiving member 31 is in the direction along the first side plate 11 to the battery core 2 length) is c 1 , a 1 ⁇ b 1 +c 1 , therefore, compared with the prior art in which the pole tabs and receiving members are arranged along the length direction of the housing, the technical solution of this embodiment can make the battery core The space between the first side plate and the first side plate is fully utilized, which can save the cavity space, thereby increasing the size of the battery core and improving the energy density and
  • the extension direction of the first side plate 11 is parallel to the surface of the first side plate 11 , and the direction from the first side plate 11 to the battery core 2 can be parallel to the length direction of the housing 1 .
  • the extending direction may be the width direction of the housing 1 or the thickness direction of the housing 1 .
  • the extending direction of the first side plate 11 is the width direction of the housing 1 .
  • the length direction of the housing 1 is also the length direction of the battery core 2
  • the width direction of the housing 1 is also the width direction of the battery core 2
  • the thickness direction of the housing 1 is also the thickness direction of the battery core 2.
  • the battery core 2 may include a plurality of stacked electrode sheets. The electrode sheets are stacked along the thickness direction of the battery core 2 . That is, the thickness direction of the battery core 2 is also the electrode sheet. thickness direction.
  • the housing 1 includes a second side plate 12 connected to the first side plate 11 .
  • the projection of the first receiving member 31 on the second side plate 12 is consistent with the position of the first tab 21 on the second side plate 12 .
  • the projections on the two side plates 12 at least partially overlap (that is, the projection of the first receiving member 31 perpendicular to the extension direction of the first side plate 11 and the projection of the first tab 21 perpendicular to the extension direction of the first side plate 11 at least partially overlap.
  • the first receiving member 31 and the first tab 21 are distributed along the extending direction of the first side plate 11 , thereby facilitating the connection between the first receiving member 31 and the first tab 21 , further saving the cavity space, and improving the Battery energy density and other properties.
  • the surface of the second side plate 12 may be perpendicular to the surface of the first side plate 11
  • the surface of the second side plate 12 may be perpendicular to the surface of the sixth side plate 16
  • the surface of the second side plate 12 may be perpendicular to the surface of the electrode sheet. Vertical (parallel to the thickness direction of the electrode sheet).
  • the projection of the first receiving member 31 perpendicular to the width direction of the battery core 2 at least partially overlaps with the projection of the first tab 21 perpendicular to the width direction of the battery core 2 . , that is, the first receiving member 31 and the first tab 21 are distributed along the width direction of the battery core 2 .
  • the distance from the side of the first tab 21 away from the battery core 2 to the side where the first tab 21 is connected to the battery core 2 is no longer than the distance from the first receiving member 31 to the first side plate 11 along the first side plate 11 .
  • the length of one pole lug 21 (that is, the length of the first receiving member 31 in the direction along the first side plate 11 to the first pole lug 21 ), that is, increasing the length of the first receiving member 31 on the second side plate 12 ), that is, increasing the length of the first receiving member 31 on the second side plate 12
  • the overlap area between the projection of the first tab 21 and the projection of the first tab 21 on the second side plate 12 is thereby achieved to protect the first tab 21 in the width direction of the battery core and prevent the first tab 21 from falling or falling of the battery. It falls off during the collision, and at the same time, the area of the electrode sheet of the battery core can be further expanded, which is beneficial to further improving the battery energy density and other performance.
  • the length c1 of the first receiving member 31 in the direction from the first side plate 11 to the first tab 21 is 1 mm to 3 mm, such as 1 mm, 1.5 mm, 2 mm, 2.5 mm, 3 mm, etc.
  • the first receiving member 31 may be block-shaped (or called a first adapter block), and its thickness direction may be parallel to the direction from the first side plate 11 to the first tab 21 , that is, the first receiving member 31 is in the shape of a block.
  • the length along the direction from the first side plate 11 to the first tab 21 is the thickness of the first receiving member 31 .
  • the above-mentioned battery may also include a first middle piece located between the battery core 2 and the first side plate 11 .
  • the first middle piece is connected to the first tab 21 and the first receiving member 31 respectively (i.e., the first receiving member 31
  • the first middle piece is connected to the first tab 21), specifically, the first receiving piece 31, the first middle piece, and the first tab 21 can be welded in sequence.
  • the first middle piece may include a first connecting piece 51 connected to the first receiving member 31 and a fourth connecting piece 54 connected to a side of the first tab 21 away from the battery core 2 .
  • the first middle piece may have a bent structure, the first connecting piece 51 is connected to the first receiving member 31, and the fourth connecting piece 54 is connected to the first tab 21.
  • a first included angle is formed between the side of the first receiving member 31 that connects to the first connecting piece 51 and the side that connects the fourth connecting piece 54 to the first tab 21 , and the range of the first included angle is 80 -140°, such as 80°, 90°, 100°, 120°, 130°, 140°, etc., that is, the side where the first receiving member 31 is connected to the first connecting piece 51 and the fourth connecting piece 54 is connected to the first pole.
  • the connecting surfaces of the ears 21 are not parallel, for example vertical.
  • the contact surface between the first receiving member 31 and the first connecting piece 51 and the connecting surface between the fourth connecting piece 54 and the first tab 21 are connected.
  • the contact surfaces are staggered so that the two contact surfaces are basically arranged along the width direction of the battery core, which not only reduces the space occupied by the first receiving member 31 and the first connecting piece 51 in the cavity, but also makes the first receiving member
  • the connection between the member 31 and the first connecting piece 51 and the connection between the fourth connecting piece 54 and the first tab 21 do not interfere with each other, and the connection between the first receiving member 31 and the first tab 21 through the first intermediate piece can be further improved. Stability, thereby improving the stability, safety and service life of the battery.
  • a third included angle is formed between the side of the first receiving member 31 that is in contact with the first connecting piece 51 and the side of the first receiving member 31 facing the first side plate 11 , and the range of the third included angle is 80-140. °, such as 80°, 90°, 100°, 120°, 130°, 140°, that is, the two are not parallel, for example, they can be perpendicular.
  • the side of the first receiving member 31 that is in contact with the first connecting piece 51 is, for example, the top surface of the first receiving member 31 .
  • the battery core 2 includes a plurality of stacked electrode sheets, and the side of the first connecting sheet 51 that is in contact with the first receiving member 31 may be parallel to the surface of the electrode sheets.
  • the first middleware further includes a first connecting component connected to the first connecting piece 51 and the fourth connecting piece 54 respectively.
  • the first connecting component includes a second connecting piece 52 and a fourth connecting piece 54 .
  • the third connecting piece 53 and the second connecting piece 52 are located between the first receiving member 31 and the battery core 2; in the direction from the first receiving member 31 to the first tab 21, the third connecting piece 53 is located between the first receiving member 31 and the battery core 2.
  • the first connecting piece 51, the second connecting piece 52, the third connecting piece 53, and the fourth connecting piece 54 are connected in sequence.
  • the first middle piece has a multiple bending structure, and its first connecting piece 51 is connected to the fourth connecting piece 54 through the second connecting piece 52 and the third connecting piece 53 in sequence, and the surface of the first connecting piece 51 is connected to the fourth connecting piece 54 .
  • the surfaces of the two connecting pieces 52 are not parallel, for example, perpendicular.
  • the surfaces of the second connecting piece 52 and the third connecting piece 53 are not parallel, and may be perpendicular or non-perpendicular.
  • the surfaces of the fourth connecting piece 54 and the surfaces of the second connecting piece 52 are not parallel. The surfaces can be parallel.
  • the first middle piece can be prevented from shaking in the left and right and front and rear directions. , the stability of the connection between the first receiving member 31 and the first tab 21 can be further improved.
  • the first connecting piece 51 includes a first connecting portion 511 connected with the first receiving member 31 , and a first connecting portion 511 connected to the first side plate 11 along the extending direction (such as from The second connecting portion 512 extends from the first receiving member 31 to the direction of the first tab 21 , and the second connecting portion 512 is connected to the fourth connecting piece 54 .
  • the first connecting part 511 and the second connecting part 512 are located on the same side of the first receiving member 31 and on the same side of the first tab 21 .
  • the first connecting part 511 may be located on the first receiving member 31 away from the sixth
  • the second connecting portion 512 can be specifically located on the side of the first tab 21 away from the sixth side plate 16
  • the second connecting portion 512 faces the first pole.
  • the angle formed between one side of the lug 21 and the side where the fourth connecting piece 54 and the second pole lug 22 are connected may range from 80° to 140°, such as 80°, 90°, 100°, 120°, and 130°. , 140°, that is, they are not parallel, such as perpendicular.
  • first connecting part 511 and the second connecting part 512 can be integrally formed to form the first connecting piece 51 , and the surfaces of the first connecting part 511 and the second connecting part 512 can be substantially flush, that is, the first connecting piece 51 can be It is a straight structure without a large degree of bending, but it is not limited to this.
  • the surface of the first connecting piece 51 and the surface of the fourth connecting piece 54 are not parallel, for example, perpendicular.
  • first connecting piece 51 and the first receiving member 31 may be welded, and a welding mark is formed on the side of the first connecting piece 51 away from the first receiving member 31 .
  • first connecting piece 51 includes the above-mentioned first connecting part 511 and the second connecting part 512
  • first connecting part 511 and the first receiving part 31 may be welded, and the first connecting part 511 is away from the first receiving part.
  • a weld mark is formed on one side of 31. Specifically, there is an overlapping area between the projection of the first receiving member 31 in the thickness direction of the battery core 2 and the projection of the first connecting piece 51 in the thickness direction of the battery core 2, and the welding area between the two is located in the overlapping area.
  • a sixth insulating layer 86 is also provided on the side of the first connecting piece 51 (or the first connecting portion 511 of the first connecting piece 51 ) away from the first receiving member 31 .
  • the above battery may further include a third insulating layer 83 located between the first middle member and the first side plate 11 .
  • the third insulating layer 83 may include a first portion located on a side of the fourth connecting piece 54 facing away from the first tab 21 .
  • the battery core 2 includes a plurality of stacked electrode sheets.
  • the battery core 2 has a first surface and a second surface that are oppositely arranged.
  • the third insulating layer 83 also includes a first portion close to the battery core 2 from the first portion.
  • a second part is formed from one end of the second surface extending in a direction close to the battery core 2 and a third part is formed in a direction extending from an end of the first part close to the second surface of the battery core 2 in a direction close to the battery core 2 .
  • the second part, the first part and the third part of the third insulating layer 83 are connected in sequence and surrounded by a first groove.
  • the bottom wall of the first groove is the third insulating layer 83
  • the first part and the side walls are respectively the second part and the third part of the third insulating layer 83, the first tab 21, and the part where the first middle piece is connected to the first tab 21 (such as the fourth connecting piece 54 , the second connecting portion 512) of the first connecting piece 51 on the side of the first tab 21 is located in the first groove and is covered by the third insulating layer 83, thereby preventing the first tab 21 or the first connecting piece 51 from contacting the shell. It also protects the first tab 21 and the first middle piece, preventing the first tab 21 and the first middle piece from colliding with the casing when the battery is dropped, thereby further improving the battery life. performance such as stability and security.
  • the first tab 21 has an opposite first side and a second side.
  • the first side of the first tab 21 and the second side of the first tab 21 are respectively located between the first tab 21 and the fourth connection.
  • the opposite sides of the side where the sheets 54 are connected that is, the side of the first tab 21 facing away from the battery core 2).
  • the third insulating layer 83 includes The first part of the side of the connecting piece 54 facing away from the first pole 21 , the second part located on the first side of the first pole 21 , and the third part located on the second side of the first pole 21 ; when the first middle piece
  • the first connecting piece 51 includes a first connecting part 511 and a second connecting part 512 (as shown in FIGS.
  • the layer 83 includes a first portion located on a side of the fourth connecting piece 54 facing away from the first tab 21 , a second portion located on a side of the second connecting portion 512 facing away from the first tab 21 , and a second portion located on a side of the first tab 21 facing away from the second connection.
  • the third part of one side (the second side) of the part 512 is located on a side of the fourth connecting piece 54 facing away from the first tab 21 , a second portion located on a side of the second connecting portion 512 facing away from the first tab 21 , and a second portion located on a side of the first tab 21 facing away from the second connection.
  • the projection of the first tab 21 in the thickness direction of the battery core 2 (that is, the projection is perpendicular to the thickness direction of the battery core 2 ) is located on the third insulating layer 83
  • the projection of the second part in the thickness direction of the battery core 2 is within the projection of the first tab 21 in the thickness direction of the battery core 2 and is located at the third part of the third insulating layer 83 .
  • the projection of the first tab 21 in the length direction of the battery core 2 (that is, the projection is perpendicular to the length direction of the battery core 2) is located in the first part of the third insulating layer 83 in the electric core 2.
  • the third insulating layer 83 completely covers the first tab 21 and the portion where the first intermediate piece is connected to the first tab 21 .
  • the direction from the second part to the first tab 21, the direction from the third part to the first tab 21, the direction from the second part to the third part, and the thickness direction of the battery core 2 can be parallel, and the direction from the first part to the first The direction of the tabs 21 is parallel to the length direction of the battery core 2 .
  • the second part of the third insulating layer 83 extends to the first side of the battery core 2 and is in contact with the electrode sheet located on the first side of the battery core 2 (near the side of the housing 1 The electrode sheet) is bonded, and the third part of the third insulating layer 83 extends to the second surface of the battery core 2 and is bonded to the electrode sheet (the electrode sheet close to the housing 1) located on the second surface of the battery core 2, As a result, the third insulating layer 83 wraps around the side of the battery core 2 , which can further improve the stability of the battery core 2 .
  • a second insulating layer 82 can also be provided between the first receiving member 31 and the battery core 2 to prevent the first receiving member 31 from having opposite polarity electrodes in the battery core 2. Chip contact short circuit. Specifically, when the first receiving member 31 has the second connecting piece 52 , the second insulating layer 82 is located between the second connecting piece 52 of the first intermediate member and the battery core 2 .
  • the second insulating layer 82 extends to the first side of the battery core 2 and is bonded to the electrode sheet located on the first side of the battery core 2 .
  • the second insulating layer 82 Extends to the second surface of the battery core 2 and is bonded to the electrode sheet located on the second surface of the battery core 2. In this way, the second insulating layer 82 wraps around the side of the battery core 2, and can also fix the battery core 2 and improve the battery core. 2 stability.
  • the battery core 2 includes a plurality of stacked electrode sheets, the electrode sheets include a first electrode sheet, the first electrode sheet includes a first current collector, and the first tab 21 is disposed on the first current collector; along In the direction from the first receiving member 31 to the battery core 2, the distance between the first receiving member 31 and the first current collector is less than 1 mm. That is, the distance between the first receiving member 31 and the first current collector is from the first receiving member 31 to the battery core 2.
  • the distance in the direction of the core 2 is less than 1 mm, thereby further shortening the space occupied by the first receiving member 31 and the first tab 21, improving the space utilization of the cavity, expanding the occupied area of the electrode sheet, and enhancing the energy of the battery core. density.
  • the battery core 2 is also provided with a second tab 22, and the polarity of the second tab 22 is opposite to that of the first tab 21; the battery also includes a second receiving member 32, and the second receiving member 32 is electrically connected to the second tab 22.
  • the second receiving member 32 is disposed between the first side plate 11 and the battery core 2 , and the projection of the second receiving member 32 on the first side plate 11 is different from the projection of the second tab 22 on the first side plate 11 . overlap (that is, the projection of the second receiving member 32 parallel to the extension direction of the first side plate 11 does not overlap with the projection of the second tab 22 parallel to the extension direction of the first side plate 11 ).
  • the second tab 22 and the second receiving member 32 are not distributed along the direction from the battery core 2 to the first side plate 11.
  • the first The distance from the side plate 11 to the battery core 2 is a 1
  • from the side of the second tab 22 connecting with the battery core 2 to the side of the second tab 22 away from the battery core 2 (that is, the side facing the first side plate 11 side) is b 2
  • the length of the second receiving member 32 in the direction from the first side plate 11 to the battery core 2 is c 2 , a 1 ⁇ b 2 + c 2 , thereby further saving the cavity space and improving the energy density of the battery. performance.
  • b 2 and b 1 may be equal or unequal, and c 2 and c 1 may be equal or unequal.
  • the projections of the first pole tab 21 , the second pole tab 22 , the first receiving member 31 , and the second receiving member 32 on the first side plate do not overlap with each other.
  • the projection of the second receiving member 32 on the second side plate 12 at least partially overlaps with the projection of the second tab 22 on the second side plate 12 (that is, the second receiving member 32 is perpendicular to
  • the projection of the extension direction of the first side plate 11 at least partially overlaps with the projection of the second pole tab 22 perpendicular to the extension direction of the first side plate 11 ), that is to say, the second receiving member 32 and the second pole tab 22 extend along the first side panel 11 .
  • the extension direction of one side plate can be arranged in the width direction of the battery core, thereby facilitating the connection between the second receiving member 32 and the second tab 22, further saving the cavity space, and improving the energy density of the battery. etc. performance.
  • the projection of the first pole 21 on the second side plate 12 at least partially overlaps with the projection of the second pole 22 on the second side plate 12 (that is, the extension of the first pole 21 perpendicular to the first side plate 11
  • the projection of the second tab 22 perpendicular to the extension direction of the first side plate 11 at least partially overlaps).
  • the projection of the first receiving member 31 on the second side panel 12 and the projection of the second receiving member 32 on the second side panel 12 at least partially overlap.
  • the projection of the first tab 21 perpendicular to the width direction of the battery core 2 at least partially overlaps with the projection of the second tab 22 perpendicular to the width direction of the battery core 2
  • the second contact The projection of the member 32 perpendicular to the width direction of the battery core 2 at least partially overlaps with the projection of the second tab 22 perpendicular to the width direction of the battery core 2 .
  • first pole tab 21 and the second pole tab 22 can be located between the first receiving member 31 and the second receiving member 32, thereby making full use of the space between the first receiving member 31 and the second receiving member 32 to further expand the
  • the size of the electrode sheet of the battery core 2 in the length direction is to increase the energy density of the battery core.
  • first pole tab 21 and the second pole tab 22 are located between the first receiving member 31 and the second receiving member 32 , that is, the first receiving member 31
  • the member 31, the first pole tab 21, the second pole tab 22, and the second receiving member 32 can be arranged in sequence.
  • first receiving member 31, the first pole tab 21, the second pole tab 22, and the second receiving member 32 They may be arranged sequentially in the width direction of the battery core 2 , and the first receiving member 31 , the first pole tab 21 , the second pole tab 22 , and the second receiving member 32 may be arranged substantially coaxially.
  • first receiving member 31 and the second receiving member 32 may be located between the first pole tab 21 and the second pole tab 22 .
  • the first receiving member 31, the first pole tab 21, the second pole tab 22, and the second receiving member 32 generally do not protrude from the outer edge of the end surface of the battery core 2 (the end surface of the battery core 2 facing the first side plate 11).
  • the outer edge of the battery core 2 does not protrude in either the thickness direction or the width direction, that is, the projection of the battery core 2 on the first side plate 11 covers the projection of the first receiving member 31 on the first side plate 11 , the projection of the battery core 2 on the first side plate 11 covers the projection of the first tab 21 on the first side plate 11 , and the projection of the battery core 2 on the first side plate 11 covers the projection of the second tab 22 on the first side plate 11 .
  • the projection of the battery core 2 on the first side plate 11 covers the projection of the second receiving member 32 on the first side plate 11 .
  • the distance from the side of the second tab 22 away from the battery core 2 to the side of the second tab 22 connecting with the battery core 2 is no greater than the distance between the second receiving member 32 and the distance along the first side plate 11 to The length in the direction of the second tab 22 is conducive to further improving the energy density and other performance of the battery.
  • the second receiving member 32 may be in the shape of a block (or called a second adapter block), and its thickness direction may be parallel to the direction from the first side plate 11 to the second tab 22 , that is, the second receiving member 32 is in the shape of a block. along the first side plate 11 to the second tab 22 The length in the direction is the thickness of the second receiving member 32 .
  • the direction from the first side plate 11 to the first tab 21 , the direction from the first side plate 11 to the second tab 22 , and the direction from the first side plate 11 to the battery core 2 are parallel.
  • the length c 2 of the second receiving member 32 in the direction from the first side plate 11 to the second tab 22 is 1 mm to 4 mm, such as 1 mm, 1.5 mm, 2 mm, 2.5 mm, 3 mm, 3.5 mm. , 4mm, etc.
  • c 2 may be greater than, equal to, or less than c 1 , preferably c 2 ⁇ c 1 , and further preferably c 2 >c 1 .
  • the first tab 21 is insulatedly connected to the housing 1
  • the second insulating sheet 7 is provided between the first receiving member 31 and the first side plate 11, and the second receiving member 32 can be connected with the first side plate 11.
  • the plate 11 is welded.
  • the difference between the two can be basically equal to the thickness of the second insulating sheet 7; when the first tab 21 is electrically connected to the housing 1, and the second When the pole tab 22 is insulatedly connected to the housing 1, the second insulating sheet 7 does not need to be provided between the first receiving member 31 and the first side plate 11, and the two are in direct contact, and between the second receiving member 32 and the first side plate A second insulating sheet 7 can be provided between 11 (the connection structure of the second receiving member 32 and the housing 1 can be similar to the connection structure of the first receiving member 31 and the housing 1 through the pole 42, which will not be described again).
  • the cavity space can be further saved and the energy density and other performance of the battery can be improved.
  • the second tab 22 can be electrically connected to the housing 1, that is, the housing 1, the second receiving member 32, and the second tab 22 are electrically connected.
  • the second receiving member 32 can be welded to the second tab 22 and the housing 1 respectively. , specifically it can be welded to the first side plate 11 of the housing 1 .
  • the above-mentioned battery may also include a second middle piece located between the battery core 2 and the first side plate 11.
  • the second middle piece is connected to the second tab 22 and the second receiving member 32 respectively (that is, the second receiving member 32 passes through the second receiving member 32).
  • the second middle piece is connected to the second tab 22), specifically, the second receiving piece 32, the second middle piece, and the second tab 22 can be welded in sequence.
  • the second middle piece may include a fifth connecting piece 55 connected to the second receiving member 32 and an eighth connecting piece 58 connected to a side of the second tab 22 away from the battery core 2 .
  • the second middle piece may have a bent structure, the fifth connecting piece 55 is connected to the second receiving member 32 , and the eighth connecting piece 58 is connected to the second tab 22 .
  • a second included angle is formed between the side of the second receiving member 32 that connects to the fifth connecting piece 55 and the side that connects the eighth connecting piece 58 to the second tab 22 , and the range of the second included angle is 80 -140°, such as 80°, 90°, 100°, 120°, 130°, 140°, etc., that is, the two are not parallel, such as perpendicular. Therefore, the connection between the second receiving part 32 and the second intermediate part can be further improved. The stability of the connection of the second tab 22 thereby improves the stability, safety, service life and other qualities of the battery.
  • a fourth included angle is formed between the side of the second receiving member 32 that is in contact with the fifth connecting piece 55 and the side of the second receiving member 32 facing the first side plate 11 , and the range of the fourth included angle is 80-140. °, such as 80°, 90°, 100°, 120°, 130°, 140°, etc., that is, the two are not parallel, for example, they can be perpendicular.
  • the battery core 2 includes a plurality of stacked electrode sheets, and the fifth connecting sheet 55 is connected to the second receiving member 32 .
  • the surface is parallel to the surface of the electrode sheet.
  • the second middleware further includes a second connecting component connected to the fifth connecting piece 55 and the eighth connecting piece 58 respectively.
  • the second connecting component includes a sixth connecting piece 56 and a sixth connecting piece 56 .
  • the seventh connecting piece 57 and the sixth connecting piece 56 are located between the second receiving member 32 and the battery core 2; in the direction from the second receiving member 32 to the second tab 22, the seventh connecting piece 57 is located between the second receiving member 32 and the battery core 2.
  • the fifth connecting piece 55, the sixth connecting piece 56, the seventh connecting piece 57, and the eighth connecting piece 58 are connected in sequence.
  • the second middle piece has a multiple bending structure, and its fifth connecting piece 55 is connected to the eighth connecting piece 58 through the sixth connecting piece 56 and the seventh connecting piece 57 in sequence, and the surface of the fifth connecting piece 55 is connected to the eighth connecting piece 58 .
  • the surfaces of the six connecting pieces 56 are not parallel, for example, perpendicular.
  • the surfaces of the sixth connecting piece 56 and the seventh connecting piece 57 are not parallel, and may be perpendicular or non-perpendicular.
  • the surfaces of the eighth connecting piece 58 and the surfaces of the sixth connecting piece 56 are not parallel. The surfaces may be parallel, thereby further improving the stability of the connection between the second receiving member 32 and the second tab 22 .
  • the fifth connecting piece 55 includes a third connecting portion 551 connected with the second receiving member 32 , and an extension direction along the first side plate 11 (such as from The fourth connecting portion 552 extends from the second receiving member 32 to the direction of the second pole lug 22 .
  • the fourth connecting portion 552 is connected to the eighth connecting piece 58 .
  • the third connecting portion 551 and the fourth connecting portion 552 are located on the same side of the second receiving member 32 and on the same side of the second pole lug 22 .
  • the third connecting portion 551 can be located on the second receiving member 32 away from the sixth connecting member 32 .
  • the fourth connecting portion 552 can be specifically located on the side of the second tab 22 facing away from the sixth side plate 16.
  • the fourth connecting portion 552 faces the side of the second tab 22 and the eighth connecting piece 58.
  • the connecting surfaces of the second pole tabs 22 are not parallel, for example, vertical.
  • the third connecting part 551 and the fourth connecting part 552 can be integrally formed to form the fifth connecting piece 55.
  • the surfaces of the third connecting part 551 and the fourth connecting part 552 can be flush, that is, the fifth connecting piece 55 can be A straight structure without a large degree of bending, but is not limited to this.
  • the surface of the fifth connecting piece 55 and the surface of the eighth connecting piece 58 are not parallel, for example, perpendicular. That is, the surface of the fifth connecting piece 55 and the second receiving member 32 is in contact with the eighth connecting piece 58 and the second tab 22 .
  • the connected sides are not parallel, such as vertical.
  • the fifth connecting piece 55 and the second receiving member 32 may be welded, and a welding mark is formed on the side of the fifth connecting piece 55 away from the second receiving member 32 .
  • the fifth connecting piece 55 includes the third connecting part 551 and the fourth connecting part 552
  • the third connecting part 551 and the second receiving part 32 may be welded, and the third connecting part 551 is away from the second receiving part 32
  • a solder mark is formed on one side of the
  • a sixth insulating layer 86 is provided on the side of the fifth connecting piece 55 (or the third connecting portion 551 of the fifth connecting piece 55 ) away from the second receiving member 32 .
  • the sixth insulating layer 86 It may extend from the first connecting piece 51 to the fifth connecting piece 55. Specifically, it may extend from an end of the first connecting piece 51 facing away from the fifth connecting piece 55 to an end of the fifth connecting piece 55 facing away from the first connecting piece 51, covering the first connecting piece 51.
  • a connecting piece 51 and a fifth connecting piece 55 may be provided on the side of the fifth connecting piece 55 (or the third connecting portion 551 of the fifth connecting piece 55 ) away from the second receiving member 32 .
  • the sixth insulating layer 86 It may extend from the first connecting piece 51 to the fifth connecting piece 55. Specifically, it may extend from an end of the first connecting piece 51 facing away from the fifth connecting piece 55 to an end of the fifth connecting piece 55 facing away from the first connecting piece 51, covering the first connecting piece 51.
  • a fourth insulating layer 84 may also be included, and the fourth insulating layer 84 is located between the second middle piece and the first side plate 11 .
  • the fourth insulating layer 84 may include a fourth portion located on a side of the eighth connecting piece 58 facing away from the second tab 22 .
  • the fourth insulating layer 84 further includes an end of the fourth portion close to the first surface of the battery core 2 .
  • a fifth part extends in a direction close to the battery core 2 and a sixth part extends in a direction close to the battery core 2 from an end of the fourth part close to the second surface of the battery core 2 .
  • the fifth part, the fourth part and the sixth part of the fourth insulating layer 84 are connected in sequence and surrounded by a second groove.
  • the bottom wall of the second groove is the fourth insulating layer.
  • the fourth part and side walls of 84 are respectively the fifth part and the sixth part of the fourth insulating layer 84, the second tab 22, and the part where the second middle piece is connected to the second tab 22 (such as the eighth connection).
  • the fourth connecting portion 552) of the piece 58 and the fifth connecting piece 55 located on the side of the second tab 22 is located in the second groove and covered by the fourth insulating layer 84, thereby further improving the stability and safety of the battery. etc. performance.
  • the second tab 22 has an opposite first side and a second side.
  • the first side of the second tab 22 and the second side of the second tab 22 are respectively located between the second tab 22 and the eighth connection. Opposite sides of the side where the pieces 58 meet.
  • the fourth insulating layer 84 includes a fourth portion located on the side of the eighth connecting piece 58 facing away from the second tab 22, a fifth portion located on the first side of the second tab 22, and a sixth portion located on the second side of the second tab 22.
  • the fourth connecting portion 552 extends to the third connecting portion of the second tab 22 .
  • the fourth insulating layer 84 includes a fourth portion located on a side of the eighth connecting piece 58 facing away from the second tab 22 , a fifth portion located on a side of the fourth connecting portion 552 facing away from the second tab 22 , and a fifth portion located on a side of the fourth connecting portion 552 facing away from the second tab 22 .
  • the sixth part of the side (second side) of the tab 22 that is away from the fourth connecting portion 552 .
  • the projection of the second tab 22 in the thickness direction of the battery core 2 is located at the projection of the fifth part of the fourth insulating layer 84 in the thickness direction of the battery core 2
  • the projection of the second tab 22 in the thickness direction of the battery core 2 is located within the projection of the sixth part of the fourth insulating layer 84 in the thickness direction of the battery core 2
  • the second tab 22 is within the length of the battery core 2
  • the projection in the direction is located within the projection of the fourth part of the fourth insulating layer 84 in the length direction of the battery core 2 , that is, the fourth insulating layer 84 completely covers the second tab 22 and the second middle member and the second tab 22 connected parts.
  • the direction from the fifth part to the second tab 22, the direction from the sixth part to the second tab 22, the direction from the fifth part to the sixth part, and the thickness direction of the battery core 2 can be parallel, and the direction from the fourth part to the second tab 22 can be parallel.
  • the direction of the diode tabs 22 is parallel to the length direction of the battery core 2 .
  • the fifth part of the fourth insulating layer 84 extends to the first side of the battery core 2 and is bonded to the electrode sheet located on the first side of the battery core 2 .
  • the sixth part of the layer 84 extends to the second surface of the battery core 2 and is bonded to the electrode sheet located on the second surface of the battery core 2. Therefore, the fourth insulating layer 84 wraps around the side of the battery core 2, which can further improve the performance of the battery core 2. The stability of cell 2.
  • a fifth insulating layer 85 may be disposed between the second receiving member 32 and the battery core 2 to prevent the second receiving member 32 from contacting the opposite polarity electrodes in the battery core 2 . Chip contact short circuit. Specifically, when the second receiving member 32 has the sixth connecting piece 56 , the fifth insulating layer 85 is located between the sixth connecting piece 56 of the second intermediate member and the battery core 2 .
  • the fifth insulating layer 85 extends to the first side of the battery core 2 and is bonded to the electrode sheet located on the first side of the battery core 2 .
  • the fifth insulating layer 85 Extends to the second surface of the battery core 2 and is bonded to the electrode sheet located on the second surface of the battery core 2. In this way, the fifth insulating layer 85 wraps around the side of the battery core 2 and can also fix the battery core 2. Improve the stability of battery core 2.
  • the battery core 2 includes a plurality of stacked electrode sheets, the electrode sheets include a second electrode sheet, the second electrode sheet includes a second current collector, and the second tab 22 is disposed on the second current collector; along In the direction from the second receiving member 32 to the battery core 2, the distance between the second receiving member 32 and the second current collector is less than 1 mm, that is, the distance between the second receiving member 32 and the second current collector is along the direction from the second receiving member 32 to the battery core The distance in the direction of core 2 is less than 1 mm.
  • the battery core 2 has a side surface located between the first surface of the battery core 2 and the second surface of the battery core 2, and at least a partial area of at least one side of the battery core 2 is provided with protection.
  • the side of the battery core 2 is the side that exposes the outer edge of the electrode sheet in the battery core 2, and is formed by the end surfaces of a plurality of stacked electrode sheets perpendicular to the thickness direction thereof, that is, the side of the battery core 2 is parallel to the battery core. 2 thickness direction (also the thickness direction of the electrode sheet).
  • the side surfaces of the battery core 2 include a first side, a second side, a third side, and a fourth side that are connected in sequence.
  • the first side is the end surface of the battery core 2 facing the first side plate 11. (That is, the side of the battery core 2 provided with the first tab 21 and the second tab 22), the second side and the fourth side are located on opposite sides of the first side (or the third side), and the first side and the third side are The sides are located on opposite sides of the second side (or fourth side).
  • first side and the third side can be parallel to each other
  • second side and the fourth side can be parallel to each other
  • first side (or third side) and the second side (or fourth side) can be perpendicular to each other
  • first side (or third side) and the second side (or fourth side) can be perpendicular to each other
  • first side The direction to the third side may be the length direction of the battery core 2
  • the second side to the fourth side may be the width direction of the battery core 2
  • the direction from the first side to the third side may also be the width of the battery core 2 direction
  • the second side to the fourth side are the length direction of the battery core 2 .
  • At least one of the second side, the third side and the fourth side is provided with a protective glue layer 9, that is, one or more (such as all) of them is provided with a protective glue layer 9, but is not limited to this.
  • a protective adhesive layer 9 can also be provided on the first side.
  • the number of the protective glue layers 9 on any side of the battery core 2 may be one or more.
  • the protective glue layers 9 on the side along the The length in the longitudinal direction may not be greater than the length of the side, for example, substantially equal;
  • the plurality of protective glue layers 9 are arranged at intervals on the side of the battery core 2, as follows: There is a gap between any two adjacent protective adhesive layers 9, and the gap facilitates the electrolyte to infiltrate into the pole pieces in the battery core, further optimizing the battery performance.
  • the length of the protective glue layer 9 in the length direction of the second side may not be greater than the length of the second side, for example, the length of the second side.
  • the lengths of the side surfaces are substantially equal; when there are multiple protective adhesive layers 9 on the second side, the multiple protective adhesive layers 9 can be distributed at intervals on the second side.
  • the protective adhesive layer 9 extends to the first side of the battery core 2 and is bonded to the electrode sheet located on the first side of the battery core 2 and/or extends to the battery core. 2 and is bonded to the electrode sheet located on the second side of the battery core 2. This prevents the exposed electrode sheet from the side of the battery core 2 from contacting the casing 1.
  • the battery core 2 can be fixed and the battery performance is improved. performance such as security and stability.
  • the protective adhesive layer 9 may be provided with one or more fifth through holes 90 , preferably multiple fifth through holes 90 , and the plurality of fifth through holes 90 may be evenly or unevenly distributed.
  • this part of the protective glue layer 9 is stacked on the side of the battery core 2 (such as the second side)
  • through the fifth through hole 90 can improve the wettability of the electrolyte to the battery core 2, allowing the electrolyte to better infiltrate into the electrode sheet, further optimizing the battery performance.
  • the protective adhesive layer 9 on this side may be provided with one or more fifth through holes 90 .
  • the above-mentioned protective adhesive layer 9 can specifically be adhesive paper, which generally has insulation and viscosity. It can be conventional adhesive paper in this field, and is not particularly limited.
  • the first receiving member 31, the first tab 21, the second tab 22, and the second receiving member 32 are located on the end surface of the battery core 2 facing the first side plate 11.
  • the first surface of the battery core 2 and the second surface of the battery core 2 The surfaces are respectively located on opposite sides of the end surface of the battery core 2 facing the first side plate 11.
  • the direction from the first surface of the battery core 2 to the second surface of the battery core 2 is the thickness direction of the battery core 2 (also the thickness of the electrode sheet). direction), the first surface of the battery core 2 and the second surface of the battery core 2 can be parallel to the surface of the electrode sheet (perpendicular to the thickness direction of the electrode sheet), and can be perpendicular to the end surface of the battery core 2 facing the first side plate 11 .
  • the electrode sheets located on the first side of the battery core 2 and the electrode sheets located on the second side of the battery core 2 are respectively the outermost electrode sheets of the battery core 2 , that is, the remaining electrode sheets are stacked on the first side of the battery core 2 between the electrode sheet and the electrode sheet located on the second side of the battery core 2 .
  • the polarity of the electrode sheet located on the first side of the battery core 2 and the polarity of the electrode sheet located on the second side of the battery core 2 may be the same or different. They may be positive electrode sheets or negative electrode sheets, and may be the first electrode sheet or the second electrode sheet. Generally, it is preferred that the electrode sheet located on the first side of the battery core 2 and the electrode sheet located on the second side of the battery core 2 are negative electrode sheets.
  • the battery core 2 includes a plurality of stacked electrode sheets.
  • the electrode sheets include a first electrode sheet and a second electrode sheet, which are separated by a separator.
  • the first electrode The polarity of the electrode sheet is opposite to that of the second electrode sheet.
  • the first electrode sheet can be a positive electrode sheet or a negative electrode sheet.
  • the second electrode sheet can be a negative electrode sheet or a positive electrode sheet.
  • the end surface of the side of the battery core 2 provided with the tabs (the first tab and the second tab) (that is, the end surface of the side of the battery core 2 facing the first side plate 11 ) is parallel to the thickness direction of the battery core 2 .
  • the electrode sheet in the battery core 2 includes a current collector, and the tabs (the first tab 21 and the second tab 22) are arranged on the current collector (the first current collector and the second current collector). Specifically, it can be set At the end of the current collector, the end surface of the battery core 2 facing the first side plate 11 is formed by the end surface of a plurality of stacked electrode sheets with tabs (the end surface of the electrode sheet parallel to its thickness direction). .
  • the battery core 2 may include a laminated battery core 2 and/or a wound battery core 2.
  • the wound battery core 2 is formed by stacking a plurality of electrode sheets and then rolling them. Specifically, it is composed of a first electrode sheet, The separator and the second electrode sheet are stacked in sequence and then rolled; the laminated battery core 2 is specifically formed by the first electrode sheet, the separator, and the second electrode sheet being stacked in sequence.
  • the battery may specifically include a lithium-ion battery, but is not limited thereto.
  • the housing 1 may include a first side plate 11 , a second side plate 12 , a third side plate 13 , a fourth side plate 14 , a fifth side plate 15 , a sixth side plate.
  • Board 16 the first side panel 11, the second side panel 12, the third side panel 13, and the fourth side panel 14 are connected in sequence, and are located at the sixth side panel 16 (or bottom panel) and the fifth side panel 15 respectively. (or cover), a closed cavity is formed, and the battery core 2 is placed in the cavity.
  • the first side panel 11 and the third side panel 13 are located on opposite sides of the second side panel 12 (or the fourth side panel 14 ).
  • the second side panel 12 and the fourth side panel 14 are located on the first side panel 11 (or the fourth side panel 14 ).
  • the fifth side panel 15 and the sixth side panel 16 are respectively located on the first side panel 11 (or the second side panel 12, or the third side panel 13, or the fourth side panel 14).
  • the direction of the fifth side plate 15 to the sixth side plate 16 is the thickness direction of the casing 1
  • the direction of the first side plate 11 to the third side plate 13 can be the length direction of the casing 1
  • the direction of the first side plate 11 to the third side plate 13 can be the length direction of the casing 1 .
  • the direction of the second side plate 12 to the fourth side plate 14 is the width direction of the casing 1, or the direction of the first side plate 11 to the third side plate 13 is the width direction of the casing 1, and the direction of the second side plate 12 to the third side plate 12 is the width direction of the casing 1.
  • the four side plates 14 are the length direction of the housing 1 .
  • One of the first side of the battery core 2 and the second side of the battery core 2 is the side of the battery core 2 facing the fifth side plate 15
  • the other is the side of the battery core 2 facing the sixth side plate 16 .
  • the insulating layer 86 is located between the first connecting piece 51 and the fifth side plate 15 and/or between the fifth connecting piece 55 and the fifth side plate 15 .
  • arc transition portions 17 can be passed between the first side plate 11 and the second side plate 12 , between the second side plate 12 and the third side plate 13 , and between the third side plate 13 and the fourth side plate 14 . Connection, that is, the connecting part of two adjacent side panels is transitioned through an arc.
  • the arc transition portion 17 has a cross-section perpendicular to the first direction.
  • the side away from the cavity and the side facing the cavity are arcs respectively, forming a groove with an opening facing the cavity.
  • the first direction is parallel to The direction from the fifth side plate 15 to the sixth side plate 16 (that is, the thickness direction of the housing 1).
  • the case 1 can also be provided with a thinned portion 151.
  • the mechanical strength of the thinned portion 151 is smaller than the mechanical strength of other parts of the case 1 except the thinned portion 151. Therefore, when the internal pressure of the battery is too high, priority can be given to The pressure is released through the thinned portion 151 to avoid battery explosion and other phenomena.
  • the thinned portion 151 may be provided on the fifth side plate 15 (the surface of the fifth side plate 15 may be parallel to the surface of the electrode sheet).
  • the thickness of the thinned portion 151 is smaller than the thickness of other portions of the housing 1 except the thinned portion 151 .
  • the housing 1 is also provided with a liquid injection hole 100 and a sealing sheet for sealing the liquid injection hole 100.
  • the liquid injection hole 100 is used for injecting electrolyte into the cavity. After the electrolyte is injected, the sealing sheet is used to seal the injection hole. The liquid hole 100 is sealed.
  • the sealing sheet may include a metal sheet, which may be welded to the housing 1 around the liquid injection hole 100 to seal the liquid injection hole 100 .
  • the liquid injection hole 100 can be provided on the first side plate 11 , specifically, it can be located at the joint between the first side plate 11 and the second middle piece and at the joint between the first side plate 11 and the first receiving member 31 (or external piece 41), the sealing piece can be welded to the side of the first side plate 11 facing away from the cavity. Specifically, it can be welded to the part of the first side plate 11 located around the liquid injection hole 100 to oppose the liquid injection hole 100. Make a seal.
  • the above-mentioned welding may specifically be laser welding.
  • the first connecting piece 51 of the first intermediate piece may be connected to the first receiving member 31 through laser welding, and a sealing piece may be used to seal the liquid injection hole 100 through laser welding, etc. .
  • the first pole tab 21 may be a positive pole tab or a negative pole tab, that is, one of the first pole tab 21 and the second pole tab 22 is a positive pole tab, and the other is a negative pole tab.
  • the first pole tab 21 is a positive pole tab.
  • the housing 1 may specifically be a metal packaging shell, that is, it may be made of metal, that is, the first side plate 11 , the second side plate 12 , the third side plate 13 , the fourth side plate 14 , the fifth side plate 15 ,
  • the six side plates 16 may be made of metal, such as aluminum, aluminum alloy, nickel, iron or nickel-iron alloy.
  • the housing 1 when the housing 1 is electrically connected to the positive terminal, the housing 1 can be made of the same polarity material as the positive terminal, such as aluminum or aluminum alloy respectively.
  • the specific materials of the two can be the same or different (the two materials can be the same or different).
  • the materials are different, for example, the material of the positive electrode ear is aluminum, and the material of the housing 1 is aluminum alloy); when the housing 1 and the negative electrode ear are electrically connected, the housing 1 and the negative electrode ear are made of the same polarity, such as nickel respectively. , iron or nickel-iron alloy, the specific material types of the two can be the same or different.
  • the material of the first receiving member 31, the material of the first intermediate member, and the material of the first tab 21 may be materials of the same polarity.
  • the first tab 21 is a positive tab
  • the materials of the first receiving member 31 The material of the first middleware, the first pole
  • the material of the ears 21 can be aluminum or aluminum alloy respectively, and the specific material types can be the same or different.
  • the material of the second receiving member 32, the material of the second middle member, and the material of the second tab 22 may be materials of the same polarity.
  • the second tab 22 is a negative tab
  • the material of the second receiving member 32, the second The material of the middle piece and the material of the second pole lug 22 can be nickel, iron or nickel-iron alloy respectively, and their specific material types can be the same or different.

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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)
  • Materials Engineering (AREA)
  • Connection Of Batteries Or Terminals (AREA)

Abstract

La présente invention concerne une batterie, comprenant : un boîtier, qui forme une cavité d'une manière fermée, et qui comprend une première plaque latérale ; une cellule de batterie située dans la cavité et pourvue d'une première languette ; et une pièce de raccordement externe raccordée électriquement à la première languette, la pièce de raccordement externe étant située sur le côté de la première plaque latérale à l'opposé de la cavité et comprenant une borne formée en faisant saillie vers l'extérieur ; la première plaque latérale comprend un second trou traversant agencé correspondant à la borne ; la borne passe à travers le second trou traversant pour être raccordée à la première languette ; et le diamètre de la borne tend à augmenter ou à diminuer dans une direction allant de la première plaque latérale à la cellule de batterie. La présente invention peut améliorer la capacité d'étanchéité, la sécurité et d'autres performances de la batterie.
PCT/CN2023/075910 2022-03-26 2023-02-14 Batterie WO2023185285A1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
CN202210304871.7 2022-03-26
CN202210304871.7A CN114614214A (zh) 2022-03-26 2022-03-26 电池

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WO2023185285A1 true WO2023185285A1 (fr) 2023-10-05

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PCT/CN2023/075910 WO2023185285A1 (fr) 2022-03-26 2023-02-14 Batterie

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Families Citing this family (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN114614214A (zh) * 2022-03-26 2022-06-10 珠海冠宇电池股份有限公司 电池
CN114665233A (zh) * 2022-03-26 2022-06-24 珠海冠宇电池股份有限公司 电池

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JPH10208723A (ja) * 1997-01-27 1998-08-07 Furukawa Battery Co Ltd:The 蓄電池
CN201149877Y (zh) * 2008-01-28 2008-11-12 苏州星恒电源有限公司 电池电极引出密封结构
CN210156473U (zh) * 2019-07-30 2020-03-17 河北化工医药职业技术学院 锂电池的石墨烯隔膜结构
CN111276732A (zh) * 2020-03-30 2020-06-12 湖北亿纬动力有限公司 一种单体式电池和电池模组
CN213717023U (zh) * 2020-11-20 2021-07-16 常州瑞德丰精密技术有限公司 简易连接片
CN215578675U (zh) * 2021-05-21 2022-01-18 湖北亿纬动力有限公司 正极柱和正极集流盘的装配结构、电池、电池模组及电池包
CN215771455U (zh) * 2021-08-25 2022-02-08 比亚迪股份有限公司 电池
CN114614209A (zh) * 2022-03-26 2022-06-10 珠海冠宇电池股份有限公司 电池
CN114614214A (zh) * 2022-03-26 2022-06-10 珠海冠宇电池股份有限公司 电池
CN114665233A (zh) * 2022-03-26 2022-06-24 珠海冠宇电池股份有限公司 电池

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* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH10208723A (ja) * 1997-01-27 1998-08-07 Furukawa Battery Co Ltd:The 蓄電池
CN201149877Y (zh) * 2008-01-28 2008-11-12 苏州星恒电源有限公司 电池电极引出密封结构
CN210156473U (zh) * 2019-07-30 2020-03-17 河北化工医药职业技术学院 锂电池的石墨烯隔膜结构
CN111276732A (zh) * 2020-03-30 2020-06-12 湖北亿纬动力有限公司 一种单体式电池和电池模组
CN213717023U (zh) * 2020-11-20 2021-07-16 常州瑞德丰精密技术有限公司 简易连接片
CN215578675U (zh) * 2021-05-21 2022-01-18 湖北亿纬动力有限公司 正极柱和正极集流盘的装配结构、电池、电池模组及电池包
CN215771455U (zh) * 2021-08-25 2022-02-08 比亚迪股份有限公司 电池
CN114614209A (zh) * 2022-03-26 2022-06-10 珠海冠宇电池股份有限公司 电池
CN114614214A (zh) * 2022-03-26 2022-06-10 珠海冠宇电池股份有限公司 电池
CN114665233A (zh) * 2022-03-26 2022-06-24 珠海冠宇电池股份有限公司 电池

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