WO2024045459A1 - 端盖组件、单体电池、电池模组及用电设备 - Google Patents

端盖组件、单体电池、电池模组及用电设备 Download PDF

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Publication number
WO2024045459A1
WO2024045459A1 PCT/CN2022/144074 CN2022144074W WO2024045459A1 WO 2024045459 A1 WO2024045459 A1 WO 2024045459A1 CN 2022144074 W CN2022144074 W CN 2022144074W WO 2024045459 A1 WO2024045459 A1 WO 2024045459A1
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WIPO (PCT)
Prior art keywords
cover plate
insulating member
explosion
end cap
cap assembly
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Ceased
Application number
PCT/CN2022/144074
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English (en)
French (fr)
Inventor
徐卫东
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Xiamen Hithium Energy Storage Technology Co Ltd
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Xiamen Hithium Energy Storage Technology Co Ltd
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Publication of WO2024045459A1 publication Critical patent/WO2024045459A1/zh
Anticipated expiration legal-status Critical
Ceased legal-status Critical Current

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    • 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
    • H01M50/14—Primary casings; Jackets or wrappings for protecting against damage caused by external factors
    • H01M50/143—Fireproof; Explosion-proof
    • 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
    • H01M50/147—Lids or covers
    • 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
    • H01M50/30—Arrangements for facilitating escape of gases
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
    • Y02E60/00—Enabling technologies; Technologies with a potential or indirect contribution to GHG emissions mitigation
    • Y02E60/10—Energy storage using batteries

Definitions

  • the present application relates to the field of battery technology, and in particular to an end cover assembly, a single battery, a battery module and electrical equipment.
  • the battery usually includes a casing assembly, an end cover assembly and an electric core.
  • the casing assembly and the end cover assembly cooperate to form an accommodating cavity, and the electric core is arranged in the accommodating cavity.
  • the end cap assembly usually includes a cover plate and an insulator.
  • the cover plate acts as a positive or negative electrode.
  • the current collector connects the battery core and the cover plate.
  • the insulator is located on the side of the cover plate facing the battery core.
  • an explosion-proof valve is usually installed on the cover.
  • the explosion-proof valve is easily damaged due to vibration, which in turn affects the explosion-proof performance of the battery product.
  • the cover plate is equipped with an explosion-proof valve
  • An insulating member the insulating member is fixedly connected to the cover plate, the insulating member is located on one side of the cover plate, the insulating member is provided with an escape hole, the escape hole is provided through the insulating member, the The projection of the escape hole along the thickness direction of the cover plate at least partially coincides with the projection of the explosion-proof valve along the thickness direction of the cover plate.
  • the projected outer contour of the escape hole is spaced apart from the projected outer contour of the explosion-proof valve.
  • the projected outer contour of the escape hole is located outside the projected outer contour of the explosion-proof valve.
  • the distance between the projected outer contour of the escape hole and the projected outer contour of the explosion-proof valve is greater than or equal to 1 mm.
  • the insulating member includes a flat plate portion and a peripheral wall portion.
  • the peripheral wall portion is provided along the circumferential direction of the flat plate portion.
  • the peripheral wall portion is provided on a side of the flat plate portion away from the cover plate. side.
  • the end cover assembly further includes a current collector, the current collector includes a plate body part and a connecting convex part, the plate body part is located on a side of the flat plate part away from the cover plate.
  • the connecting convex portion is provided on a side of the plate body portion facing the cover plate; the flat plate portion is provided with a first through hole, and at least part of the connecting convex portion passes through the first through hole. The hole is electrically connected to the cover plate.
  • the peripheral wall portion is provided with a notch, and the notch is connected with the escape hole.
  • the flat plate portion is provided with a limiting structure, and the limiting structure is provided on a side of the flat plate portion away from the cover plate.
  • the limiting structure includes a first limiting part, a second limiting part and a third limiting part, and the first limiting part, the second limiting part and the third limiting part
  • the three limiting parts are all located on the outer periphery of the first through hole, and the current collector is provided with a fool-proof part and a limiting notch;
  • the first limiting part is used to contact the end of the current collector, the second limiting part is used to contact the foolproof part, and the third limiting part is used to contact the foolproof part. Said limit gap limit fit.
  • the insulating member is further provided with reinforcing ribs, and the reinforcing ribs are located on a side of the flat plate portion away from the cover plate.
  • the insulating member is provided with at least one first connecting portion, and the first connecting portion is located on a side of the insulating member facing the cover plate; the cover plate is provided with at least a first connecting portion.
  • Two connecting parts the second connecting part is provided on the side of the cover plate facing the insulating member, the second connecting part corresponds to the first connecting part one-to-one, and the second connecting part is in a one-to-one correspondence with the first connecting part.
  • the first connecting part is limitedly fitted.
  • one of the first connecting part and the second connecting part is a connecting post, and the other of the first connecting part and the second connecting part is a connecting hole, The connecting post is inserted into the connecting hole.
  • Another embodiment provides a single cell including the end cap assembly as described in any of the above technical solutions.
  • Another embodiment provides a battery module, including at least one single cell as described in the above technical solution.
  • Another embodiment provides an electrical device, including the battery module as described in the above technical solution.
  • Figure 1 is a schematic structural diagram of the side of the end cover assembly away from the battery core in one embodiment
  • Figure 2 is a schematic structural view of the side of the end cover assembly facing the battery core in the embodiment of Figure 1;
  • Figure 3 is a schematic diagram of the explosion structure of the cover plate and explosion-proof valve in the embodiment of Figure 1;
  • Figure 4 is a schematic diagram of the explosion structure of the insulator and explosion-proof valve in the embodiment of Figure 1;
  • Figure 5 is a schematic structural diagram of the side of the insulating member facing the battery core in the embodiment of Figure 1;
  • FIG. 6 is a schematic diagram of the overall structure of the current collector in the embodiment of FIG. 1 .
  • the end cover assembly without poles, it includes a cover plate 100 and an insulator 200.
  • the current collector 300 connects the cells (not shown) and the cover plate 100.
  • the insulator 200 is provided on the cover plate 100.
  • the side facing the battery core, where the cover 100 can serve as the positive electrode or the negative electrode.
  • the current collector 300 is electrically connected to the negative electrode lug of the battery core, and the case assembly serves as the positive electrode; if the cover plate 100 is the positive electrode, the current collector 300 is electrically connected to the positive electrode lug of the battery core. electrical connection, with the housing component acting as the negative electrode.
  • the end cover assembly without poles eliminates the need for sealing rings, poles and upper plastics, thereby reducing costs and making the structure simpler, and the sealing performance of the cover plate 100 can also be significantly improved.
  • an embodiment provides an end cover assembly, including a cover plate 100 and an insulator 200 . in:
  • the cover plate 100 is provided with an explosion-proof valve 110.
  • the purpose of providing the explosion-proof valve 110 on the cover 100 is to prevent the battery from exploding when abnormal, thereby ensuring safety in use.
  • the explosion-proof valve 110 can be welded on the cover plate 100 by laser welding.
  • the cover 100 is provided with a mounting groove 101.
  • the mounting groove 101 may be a stepped groove, and the mounting groove 101 is provided through the cover 100.
  • the explosion-proof valve 110 is welded to the cover 100 through the mounting groove 101. .
  • the explosion-proof valve 110 may be oval or other shapes, such as rectangular or circular, and the installation groove 101 roughly matches the shape of the explosion-proof valve 110 .
  • the cover plate 100 can be a bare aluminum sheet.
  • the cover plate 100 can also be a copper sheet or a nickel sheet.
  • the insulating member 200 is fixedly connected to the cover 100.
  • the insulating member 200 is located on one side of the cover 100.
  • the insulating member 200 is provided with an escape hole 210, and the escape hole 210 passes through it.
  • the insulation member 200 is configured such that the projection of the escape hole 210 along the thickness direction of the cover plate 100 at least partially coincides with the projection of the explosion-proof valve 110 along the thickness direction of the cover plate 100 .
  • the insulating member 200 is provided with an escape hole 210 that at least partially or completely matches the position of the explosion-proof valve 110.
  • the laser can reduce or avoid burns to the insulating member 200 when welding the explosion-proof valve 110 and the cover plate 100.
  • the insulator 200 is fixed to the cover 100, damage to the explosion-proof valve 110 caused by the vibration of the cover 100 relative to the insulator 200 can be reduced or avoided, ensuring explosion-proof performance and improving the yield rate of battery products.
  • the insulating member 200 is arranged in a substantially circular shape, and is made of plastic or other materials to have insulating properties.
  • the insulating member 200 may be a lower plastic, and the lower plastic is fixed on the side of the cover 100 facing the battery core.
  • the projected outer contour of the escape hole 210 and the projected outer contour of the explosion-proof valve 110 are spaced apart.
  • the thickness direction of the cover plate is shown, that is, the direction is generally perpendicular to the plane of the cover plate 100 .
  • FIG. 4 there is a gap between the projection line of the outer contour of the escape hole 210 and the projection line of the outer contour of the explosion-proof valve 110 so that the positions of the escape hole 210 and the explosion-proof valve 110 match. Compared with the absence of the escape hole 210 situation, the problem of damage to the explosion-proof valve 110 caused by the vibration of the insulating member 200 is avoided.
  • the projected outer contour of the escape hole 210 is located outside the projected outer contour of the explosion-proof valve 110 .
  • the projection line of the outer contour of the explosion-proof valve 110 is located inside the projection line of the escape hole 210, so that the insulating member 200 will not affect the explosion-proof valve 110 when it vibrates, thereby protecting the explosion-proof valve 110. .
  • the distance between the projected outer contour of the escape hole 210 and the projected outer contour of the explosion-proof valve 110 is greater than or equal to 1 mm.
  • the insulating member 200 is also provided with a first through hole 220 .
  • the first through hole 220 is provided through the insulating member 200 .
  • the first through hole 220 is used to connect the current collecting member 300 with the current collecting member 300 .
  • the cover plate 100 is electrically connected, and the current collector 300 is located on a side of the insulating member 200 away from the cover plate 100 .
  • the insulator 200 is located between the current collector 300 and the cover plate 100.
  • the insulator 200 Open a first through hole 220 in the insulating member 200 so that a part of the current collecting member 300 is electrically connected to the cover plate 100 through the first through hole 220 .
  • the first through hole 220 is substantially a circular hole, and the first through hole 220 is opened in the middle of the insulating member 200 .
  • the first through hole 220 may be disposed cocentrically with the insulating member 200 to facilitate processing.
  • the insulating member 200 includes a flat plate portion 270 and a peripheral wall portion 230 .
  • the peripheral wall portion 230 is provided along the circumferential direction of the flat plate portion 270 .
  • the peripheral wall portion 230 is provided on a side of the flat plate portion 270 away from the cover plate 100 . side.
  • the flat plate portion 270 is arranged in a substantially circular shape.
  • a peripheral wall portion 230 is provided on the outer periphery of the flat plate portion 270 .
  • the peripheral wall portion 230 protrudes toward the side away from the cover 100 .
  • the peripheral wall portion 230 can be used for assembly with the housing. Assembly and positioning are performed, and the strength of the insulating member 200 is also improved.
  • the end cap assembly also includes a current collector 300.
  • the current collector 300 includes a plate body part and a connecting protrusion 3211.
  • the plate body part is located away from the flat plate part 270.
  • the connecting protrusion 3211 is provided on the side of the plate body facing the cover 100; the flat portion 270 is provided with a first through hole 220, and at least part of the connecting protrusion 3211 passes through the first through hole 220. It is electrically connected to the cover plate 100 .
  • the current collector 300 is arranged in a sheet shape, the connecting convex portion 3211 is generally a circular convex portion, and the connecting convex portion 3211 protrudes toward one side of the cover plate 100; as shown in Figures 4 and 5,
  • the first through hole 220 is a circular through hole to match the connecting convex portion 3211 and allow the connecting convex portion 3211 to pass through, so as to facilitate welding between the connecting convex portion 3211 and the cover plate 100 .
  • the peripheral wall 230 is provided with a notch 231 so that the notch 231 is connected to the escape hole 210 .
  • the peripheral wall portion 230 is provided with a notch 231, and the notch 231 extends to the escape hole 210, which is equivalent to the escape hole 210 extending toward the peripheral wall portion 230 and extending outside the peripheral wall portion 230; as shown in Figure 2,
  • the notch 231 is provided so that the expanded current collecting part 300 can pass through the notch 231 and protrude out of the insulating member 200 when the current collecting part 300 is welded.
  • the flat plate portion 270 is provided with a limiting structure, and the limiting structure is provided on a side of the flat plate portion 270 away from the cover 100 .
  • the current collector 300 After the current collector 300 is electrically connected to the cover plate 100, in order to avoid vibration or shaking that would cause the current collector 300 to be misaligned relative to the cover plate 100, which would affect the effect of the electrical connection and lead to poor contact, the current collector 300 is restricted. position; at the same time, in order to prevent the current collector 300 from being installed upside down, the limiting structure is used to prevent fooling.
  • the limiting structure includes a first limiting part 241, a second limiting part 242 and a third limiting part 243.
  • the portion 242 and the third limiting portion 243 are both located on the outer periphery of the first through hole 220 , and the current collector 300 is provided with a fool-proof portion 312 and a limiting notch 313 .
  • the first limiting part 241 is used to contact the end 311 of the current collecting member 300
  • the second limiting part 242 is used to contact the foolproof part 312 of the current collecting member 300
  • the third limiting part 241 is used to contact the end portion 311 of the current collecting member 300 .
  • the positioning portion 243 is used for limited cooperation with the limiting notch 313 of the current collector 300 .
  • the current collector 300 is generally arranged in a sheet shape.
  • the current collector 300 has an end portion 311, a fool-proof portion 312 and a limiting notch 313.
  • the fool-proof portion 312 is located approximately at the corner of the current collector 300.
  • the limiting notch 313 is located on the side of the current collector 300 .
  • the outline of the end portion 311 is generally a straight line; the outline of the anti-fool portion 312 is generally a chamfer at the corner of a rectangle; and the limiting notch 313 is generally a semicircular opening slot.
  • the two fool-proof parts 312 should ensure that they do not overlap when folded in half along the center line of the current collector 300 , so as to ensure the fool-proof and position-limiting functions.
  • the first limiting part 241 is a long rib structure matching the end part 311
  • the second limiting part 242 is a bending rib structure matching the foolproof part 312
  • the third limiting part 243 is a columnar structure matching the limiting notch 313. This setting is used to prevent fooling and limit the position.
  • the current collecting member 300 is arranged in a sheet shape.
  • the current collecting member 300 is provided with a first bending part 331 and a second bending part 332 .
  • the first bending part 331 and the second bending part 332 are used for
  • the flat plate part of the current collector 300 is separated from the first welding part 321, the second welding part 322 and the folding part 323.
  • the folding part 323 is located between the first welding part 321 and the second welding part 322.
  • the first welding part 321 can The second welding part 322 can be bent and folded along the first bending part 331 toward one side of the folding part 323 , and the first welding part 321 and the second welding part 322 can be folded and folded along the second bending part 332 toward one side of the folding part 323 .
  • the two welding parts 322 are respectively located on opposite sides of the folding part 323 .
  • the connection protrusion 3211 is provided on the first welding part 321, and the connection protrusion 3211 is protruding on the current collector 300 toward one side of the cover plate 100 for ultrasonic welding with the cover plate 100; the second welding part 322 is used for welding with the tabs of the battery core.
  • the side of the second welding part 322 away from the folding part 323 is also provided with an escape opening 340.
  • the escape opening 340 is used to correspond to the position of the explosion-proof valve 110 after the collector 300 is folded. And at the same time, it corresponds to the position of the escape hole 210 to facilitate the exhaust of the battery core.
  • the insulating member 200 is further provided with reinforcing ribs 250 , and the reinforcing ribs 250 are located on the side of the flat plate portion 270 away from the cover plate 100 .
  • the reinforcing ribs 250 are used to enhance the structural strength of the insulating member 200 , and the relief holes 210 are opened in the area where the reinforcing ribs 250 are located.
  • the escape hole 210 can also serve as a ventilation hole, thereby eliminating the need to open another through hole in the insulating member 200 to avoid weakening the structural strength of the insulating member 200 .
  • the reinforcing rib 250 surrounds the outer periphery of the first through hole 220 , and a part of the reinforcing rib 250 is connected to or integrally provided with the peripheral wall portion 230 .
  • the insulating member 200 is provided with at least one first connecting portion 260 , and the first connecting portion 260 is located on the side of the insulating member 200 facing the cover plate 100 ; the cover plate 100 is provided with At least one second connection part 120 is provided on the side of the cover 100 facing the insulating member 200 .
  • the second connection part 120 corresponds to the first connection part 260 one-to-one.
  • the second connection part 120 is in a one-to-one correspondence with the first connection part 260 .
  • the connecting portion 260 has a limited fit.
  • the first connection part 260 and the second connection part 120 facilitate the pre-assembly and alignment of the cover plate 100 and the insulating part 200, and make the connection between the cover plate 100 and the insulating part 200 more reliable.
  • one of the first connecting part 260 and the second connecting part 120 is a connecting post, and the other one of the first connecting part 260 and the second connecting part 120 is Connecting hole, the connecting post is inserted into the connecting hole.
  • the connecting holes and connecting posts can serve as pre-alignments between the cover plate 100 and the insulating member 200 before welding, thereby improving assembly accuracy.
  • the first connecting portion 260 on the insulating member 200 is a connecting post; as shown in Figure 3, the second connecting portion 120 on the cover 100 is a connecting hole, and the connecting hole is used to match the connecting post. To play a pre-alignment role.
  • first connecting parts 260 there are four first connecting parts 260 , and the four first connecting parts 260 surround the outer periphery of the first through hole 220 .
  • second connecting parts 120 Corresponds to the first connection part 260 one-to-one.
  • connection holes may be blind holes.
  • the connecting posts on the insulator 200 are first pre-aligned with the blind holes on the cover plate 100, and then the explosion-proof valve 110 and the cover plate 100 are welded.
  • the assembly sequence of the explosion-proof valve 110 is also optimized to improve the assembly of the explosion-proof valve 110. efficiency.
  • the assembly process of the end cap assembly is:
  • the insulating member 200 is stuck on the cover 100 through the cooperation of the connecting posts and the connecting holes;
  • the connecting convex portion 3211 of the current collecting member 300 passes through the notch 231, the escape hole 210 and the first through hole 220 in order to contact the surface of the cover plate 100 facing the current collecting member 200.
  • the notch 231 has an impact on the current collecting member 200.
  • the piece 300 also plays a certain limiting role;
  • the connecting convex portion 3211 of the current collector 200 and the cover plate 100 are welded and fixed by ultrasonic welding or other methods. It can be seen from FIG. 1 , FIG. 2 and FIG. 6 that a part of the folding part 323 of the current collecting member 200 and the entire second welding part 322 extend outside the insulating member 200 .
  • Another embodiment provides a single cell including the end cap assembly as described in any of the above embodiments.
  • the single cell includes the aforementioned end cover assembly.
  • the insulator 200 is provided with an escape hole 210 that matches at least partially or completely the position of the explosion-proof valve 110.
  • the laser can Reduce or avoid burns to the insulator 200.
  • the insulator 200 is fixed to the cover 100, damage to the explosion-proof valve 110 caused by the vibration of the cover 100 relative to the insulator 200 can be reduced or avoided, ensuring explosion protection. performance and improve the yield rate of battery products.
  • the single battery may be a lithium ion secondary battery, a lithium ion primary battery, a lithium sulfur battery, a sodium lithium ion battery, a sodium ion battery or a magnesium ion battery, etc., without limitation.
  • the shape of the battery can be a cylinder, a flat body, a rectangular parallelepiped or other shapes, and there is no limit to this.
  • Another embodiment provides a battery module, including at least one single cell as described in the above embodiment.
  • the battery module includes the aforementioned single battery.
  • the insulator 200 is provided with an escape hole 210 that matches at least partially or completely the position of the explosion-proof valve 110.
  • the laser can Reduce or avoid burns to the insulator 200.
  • the insulator 200 is fixed to the cover 100, damage to the explosion-proof valve 110 caused by the vibration of the cover 100 relative to the insulator 200 can be reduced or avoided, ensuring explosion protection. performance and improve the yield rate of battery products.
  • the battery module includes at least one of the aforementioned single cells, for example, three single cells or four single cells, etc., so as to have greater power output capability.
  • Another embodiment provides an electrical device, including the battery module as described in the above embodiment.
  • the electrical equipment includes the aforementioned battery module.
  • the insulator 200 is provided with an escape hole 210 that matches at least partially or completely the position of the explosion-proof valve 110.
  • the laser can Reduce or avoid burns to the insulator 200.
  • the insulator 200 is fixed to the cover 100, damage to the explosion-proof valve 110 caused by the vibration of the cover 100 relative to the insulator 200 can be reduced or avoided, ensuring explosion protection. performance and improve the yield rate of battery products.
  • the electrical equipment can come in many forms, such as mobile phones, tablets, laptops, electric vehicles, spacecraft, electric toys and power tools, etc.
  • first and second are used for descriptive purposes only and cannot be understood as indicating or implying relative importance or implicitly indicating the quantity of indicated technical features. Therefore, features defined as “first” and “second” may explicitly or implicitly include at least one of these features.
  • “plurality” means at least two, such as two, three, etc., unless otherwise expressly and specifically limited.
  • connection In the embodiments of this application, unless otherwise clearly stated and limited, the terms “installation”, “connection”, “connection”, “fixing” and other terms should be understood in a broad sense. For example, it can be a fixed connection or a fixed connection. Detachable connection, or integration; it can be a mechanical connection or an electrical connection; it can be a direct connection or an indirect connection through an intermediate medium; it can be an internal connection between two elements or an interactive relationship between two elements, unless There are clear limitations. For those of ordinary skill in the art, the specific meanings of the above terms in this application can be understood according to specific circumstances.
  • a first feature "on” or “under” a second feature may mean that the first and second features are in direct contact, or the first and second features are in indirect contact through an intermediary. touch.
  • the terms “above”, “above” and “above” the first feature is above the second feature may mean that the first feature is directly above or diagonally above the second feature, or simply means that the first feature is higher in level than the second feature.
  • "Below”, “below” and “beneath” the first feature to the second feature may mean that the first feature is directly below or diagonally below the second feature, or simply means that the first feature has a smaller horizontal height than the second feature.

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  • Chemical & Material Sciences (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • Electrochemistry (AREA)
  • General Chemical & Material Sciences (AREA)
  • Connection Of Batteries Or Terminals (AREA)
  • Gas Exhaust Devices For Batteries (AREA)

Abstract

本申请涉及一种端盖组件、单体电池、电池模组及用电设备，端盖组件包括盖板(100)和绝缘件(200)，盖板(100)设有防爆阀(110)，绝缘件(200)与盖板(100)固定连接，绝缘件(200)位于盖板(100)的一侧，绝缘件(200)设有避让孔(210)，避让孔(210)贯通绝缘件(200)设置，避让孔(210)沿盖板(100)的厚度方向的投影与防爆阀(110)沿盖板(100)的厚度方向的投影至少部分重合；单体电池、电池模组及用电设备均包括前述的端盖组件。绝缘件设有与防爆阀的位置至少部分或全部匹配的避让孔，防爆阀与盖板的焊接时激光能够减少或避免对绝缘件的烧伤，绝缘件与盖板固定时能够降低或避免因盖板相对绝缘件的振动而导致对防爆阀产生的损害，保证防爆性能。

Description

端盖组件、单体电池、电池模组及用电设备
相关申请
本申请要求2022年08月29日申请的，申请号为2022222861737，名称为“端盖组件、单体电池、电池模组及用电设备”的中国专利申请的优先权，在此将其全文引入作为参考。
技术领域
本申请涉及电池技术领域，特别是涉及一种端盖组件、单体电池、电池模组及用电设备。
背景技术
电池通常包括壳体组件、端盖组件和电芯，壳体组件和端盖组件配合形成容置腔，电芯布置在容置腔内。对于无极柱的端盖组件，端盖组件通常包括盖板和绝缘件，盖板充当正极或负极，集流件连接电芯和盖板，绝缘件设在盖板的朝向电芯的一侧。
为避免电池异常时发生爆炸，通常在盖板上设置防爆阀。然而，在进行绝缘件与盖板的焊接过程中以及后续的运输过程中，容易因振动而导致防爆阀受损，进而导致电池产品的防爆性能受到影响。
发明内容
基于此，有必要提供一种端盖组件、单体电池、电池模组及用电设备。
其技术方案如下：
一个实施例提供了一种端盖组件，包括：
盖板，所述盖板设有防爆阀；
绝缘件，所述绝缘件与所述盖板固定连接，所述绝缘件位于所述盖板的一侧，所述绝缘件设有避让孔，所述避让孔贯通所述绝缘件设置，所述避让孔沿所述盖板的厚度方向的投影与所述防爆阀沿所述盖板的厚度方向的投影至少部分重合。
在其中一个实施例中，所述避让孔的投影的外轮廓与所述防爆阀的投影的外轮廓之间呈间隔设置。
在其中一个实施例中，所述避让孔的投影的外轮廓位于所述防爆阀的投影的外轮廓外。
在其中一个实施例中，所述避让孔的投影的外轮廓与所述防爆阀的投影的外轮廓之间 的间距大于或等于1mm。
在其中一个实施例中，所述绝缘件包括平板部和周壁部，所述周壁部沿所述平板部的周向设置，所述周壁部设在所述平板部的远离所述盖板的一侧。
在其中一个实施例中，所述端盖组件还包括集流件，所述集流件包括板体部和连接凸部，所述板体部位于所述平板部的远离所述盖板的一侧，所述连接凸部设于所述板体部的朝向所述盖板的一侧；所述平板部设有第一通孔，所述连接凸部的至少部分穿过所述第一通孔与所述盖板电性连接。
在其中一个实施例中，所述周壁部设有缺口，所述缺口与所述避让孔连通。
在其中一个实施例中，所述平板部设有限位结构，所述限位结构设在所述平板部的远离所述盖板的一侧。
在其中一个实施例中，所述限位结构包括第一限位部、第二限位部和第三限位部，所述第一限位部、所述第二限位部和所述第三限位部均位于在所述第一通孔的外周，所述集流件设有防呆部和限位缺口；
所述第一限位部用于与所述集流件的端部抵接，所述第二限位部用于与所述防呆部抵接，所述第三限位部用于与所述限位缺口限位配合。
在其中一个实施例中，所述绝缘件还设有加强筋，所述加强筋位于所述平板部的远离所述盖板的一侧。
在其中一个实施例中，所述绝缘件设有至少一个第一连接部，所述第一连接部位于所述绝缘件的朝向所述盖板的一侧；所述盖板设有至少一个第二连接部，所述第二连接部设在所述盖板的朝向所述绝缘件的一侧，所述第二连接部与所述第一连接部一一对应，所述第二连接部与所述第一连接部限位配合。
在其中一个实施例中，所述第一连接部和所述第二连接部中的一者为连接柱，所述第一连接部和所述第二连接部中的另一者为连接孔，所述连接柱插入所述连接孔内。
另一个实施例提供了一种单体电池，包括如上述任一个技术方案所述的端盖组件。
还有一个实施例提供了一种电池模组，包括至少一个如上述技术方案所述的单体电池。
还有一个实施例提供了一种用电设备，包括如上述技术方案所述的电池模组。
附图说明
为了更清楚地说明本申请实施例或传统技术中的技术方案，下面将对实施例或传统技术描述中所需要使用的附图作简单地介绍，显而易见地，下面描述中的附图仅仅是本申请的实施例，对于本领域普通技术人员来讲，在不付出创造性劳动的前提下，还可以根据公 开的附图获得其他的附图。
图1为一个实施例中端盖组件的远离电芯一侧的结构示意图；
图2为图1实施例中端盖组件的朝向电芯一侧的结构示意图；
图3为图1实施例中盖板与防爆阀的爆炸结构示意图；
图4为图1实施例中绝缘件与防爆阀的爆炸结构示意图；
图5为图1实施例中绝缘件的朝向电芯一侧的结构示意图；
图6为图1实施例中集流件的整体结构示意图。
附图标注说明：
100、盖板；101、安装槽；110、防爆阀；120、第二连接部；200、绝缘件；210、避让孔；220、第一通孔；230、周壁部；231、缺口；241、第一限位部；242、第二限位部；243、第三限位部；250、加强筋；260、第一连接部；270、平板部；300、集流件；311、端部；312、防呆部；313、限位缺口；321、第一焊接部；3211、连接凸部；322、第二焊接部；323、折叠部；331、第一弯折部；332、第二弯折部；340、避让口。
具体实施方式
下面将结合本申请实施例中的附图，对本申请实施例中的技术方案进行清楚、完整地描述，显然，所描述的实施例仅仅是本申请一部分实施例，而不是全部的实施例。基于本申请中的实施例，本领域普通技术人员在没有做出创造性劳动前提下所获得的所有其他实施例，都属于本申请保护的范围。
请结合图1和图2，对于无极柱的端盖组件，包括盖板100和绝缘件200，集流件300连接电芯(未图示)和盖板100，绝缘件200设在盖板100的朝向电芯的一侧，其中，盖板100可以作为正极或负极。例如，若盖板100为负极，则集流件300与电芯的负极耳电性连接，而壳体组件则充当正极；若盖板100为正极，则集流件300与电芯的正极耳电性连接，而壳体组件则充当负极。无极柱的端盖组件，由于省去了密封圈、极柱及上塑胶，从而使得成本降低，结构也更简单，盖板100的密封性能也能够显著提升。
请结合图3至图5，一个实施例提供了一种端盖组件，包括盖板100和绝缘件200。其中：
如图1和图3所示，盖板100设有防爆阀110。
盖板100上设置防爆阀110的目的是防止电池异常时爆炸，从而保证使用安全。
防爆阀110可以通过激光焊接的方式焊接在盖板100上。例如图3所示的实施例中，盖板100设有安装槽101，安装槽101可以是阶梯槽，且安装槽101贯通盖板100设置， 防爆阀110通过安装槽101焊接在盖板100上。
防爆阀110可以是椭圆形，也可以说其他形状，例如矩形或圆形，安装槽101与防爆阀110的形状大致匹配。
可选地，盖板100可以是光铝片，当然，在满足要求的情况下，盖板100也可以是铜片或镍片等。
请结合图1、图2、图4和图5所示，绝缘件200与盖板100固定连接，绝缘件200位于盖板100的一侧，绝缘件200设有避让孔210，避让孔210贯通绝缘件200设置，避让孔210沿盖板100的厚度方向的投影与防爆阀110沿盖板100的厚度方向的投影至少部分重合。
绝缘件200设有与防爆阀110的位置至少部分或全部匹配的避让孔210，一方面，在进行防爆阀110与盖板100的焊接时，激光能够减少或避免对绝缘件200的烧伤，另一方面，绝缘件200与盖板100固定时，能够降低或避免因盖板100相对绝缘件200的振动而导致对防爆阀110产生的损害，保证防爆性能，提高电池产品的良品率。
可选地，如图2和图4所示，绝缘件200大致呈圆形状设置，绝缘件200采用塑料等材料制成，以具备绝缘性能。
例如，绝缘件200可以是下塑胶，下塑胶固定在盖板100的朝向电芯的一侧。
在一个实施例中，请参照图4，在沿盖板100的厚度方向投影时，避让孔210的投影的外轮廓与防爆阀110的投影的外轮廓之间呈间隔设置。
如图1所示，示出了盖板的厚度方向，即大致为垂直于盖板100平面的方向。如图4所示，避让孔210的外轮廓的投影线与防爆阀110的外轮廓的投影线之间具有间隔，以使避让孔210和防爆阀110的位置进行匹配，相比没有避让孔210的情况，避免了绝缘件200振动对防爆阀110造成损害的问题。
在一个实施例中，请参照图4，避让孔210的投影的外轮廓位于防爆阀110的投影的外轮廓外。
如图4所示，防爆阀110的外轮廓的投影线位于避让孔210的投影线内部，使得绝缘件200在振动的时候不会影响到防爆阀110，从而对防爆阀110起到保护的作用。
在一个实施例中，避让孔210的投影的外轮廓与防爆阀110的投影的外轮廓之间的间距大于或等于1mm。
将该间距设定为大于或等于1mm，能够确保避让孔210切实起到对防爆阀110的保护作用。
在一个实施例中，请参照图4和图5，绝缘件200还设有第一通孔220，第一通孔220 贯通绝缘件200设置，第一通孔220用于使集流件300与盖板100电性连接，集流件300位于绝缘件200的远离盖板100的一侧。
结合图1和图2，绝缘件200位于集流件300和盖板100之间，为了便于集流件300与盖板100电性连接，如图4和图5所示并结合图1和图2，在绝缘件200上开设第一通孔220，以使集流件300的一部分通过第一通孔220与盖板100电性连接。
例如，图4和图5中，第一通孔220大致为圆孔，且第一通孔220开设在绝缘件200的中部。另外，第一通孔220可以与绝缘件200共圆心设置，以便于加工。
在一个实施例中，请参照图5，绝缘件200包括平板部270和周壁部230，周壁部230沿平板部270的周向设置，周壁部230设在平板部270的远离盖板100的一侧。
如图5所示，平板部270大致呈圆形设置，平板部270的外周设有周壁部230，周壁部230朝远离盖板100的一侧凸设，周壁部230可以用于与壳体组件进行装配和定位，同时也起到提高绝缘件200的强度的作用。
在一个实施例中，请结合图2、图5和图6，端盖组件还包括集流件300，集流件300包括板体部和连接凸部3211，板体部位于平板部270的远离盖板100的一侧，连接凸部3211设于板体部的朝向盖板100的一侧；平板部270设有第一通孔220，连接凸部3211的至少部分穿过第一通孔220与盖板100电性连接。
如图6所示，集流件300呈片状设置，连接凸部3211大致为圆形凸部，且连接凸部3211朝盖板100的一侧凸设；如图4和图5所示，第一通孔220为圆形通孔，以与连接凸部3211相适配，并使连接凸部3211通过，以便于连接凸部3211与盖板100进行焊接。
在一个实施例中，请结合图2、图4和图5，周壁部230设有缺口231，使缺口231与避让孔210连通。
如图4和图5所示，周壁部230设有缺口231，该缺口231延伸至避让孔210，相当于避让孔210朝周壁部230扩展并扩展到周壁部230外；结合图2所示，设置该缺口231，以使在焊接集流件300时展开的集流件300得以通过该缺口231并伸出到绝缘件200外。
在一个实施例中，请参照图2和图5，平板部270设有限位结构，限位结构设在平板部270的远离盖板100的一侧。
集流件300在与盖板100电性连接之后，为避免振动或晃动而导致集流件300相对盖板100错位，影响到电性连接的效果并导致接触不良，对集流件300进行限位；同时，为避免集流件300装反，从而通过限位结构进行防呆。
在一个实施例中，请结合图2和图5，限位结构包括第一限位部241、第二限位部242和第三限位部243，第一限位部241、第二限位部242和第三限位部243均位于在第一通 孔220的外周，集流件300设有防呆部312和限位缺口313。
如图2所示，第一限位部241用于与集流件300的端部311抵接，第二限位部242用于与集流件300的防呆部312抵接，第三限位部243用于与集流件300的限位缺口313限位配合。
如图6所示，集流件300大致呈片状设置，集流件300具有端部311、防呆部312和限位缺口313，防呆部312大致位于集流件300的边角位置，限位缺口313位于集流件300的侧部。
如图6所示，端部311的轮廓大致为直线；防呆部312的轮廓大致为矩形边角位置的一个倒角；限位缺口313大致为半圆形开口槽。
可选地，集流件300的防呆部312可以是只有一个，也可以是两个。若防呆部312为两个时，则两个防呆部312在沿集流件300的中线对折时应确保不重合，以确保起到防呆和限位的作用。
请结合图2和图5，第一限位部241为与端部311匹配的长条筋结构，第二限位部242为与防呆部312匹配的弯折筋结构，第三限位部243为与限位缺口313匹配的柱状结构。如此设置，以实现防呆和限位的作用。
如图6所示，集流件300呈片状设置，集流件300设有第一弯折部331和第二弯折部332，第一弯折部331和第二弯折部332用于使集流件300的平板部分隔出第一焊接部321、第二焊接部322和折叠部323，折叠部323位于第一焊接部321和第二焊接部322之间，第一焊接部321能够沿第一弯折部331朝折叠部323的一侧弯折叠设，第二焊接部322能够沿第二弯折部332朝折叠部323的一侧弯折叠设，且第一焊接部321和第二焊接部322分别位于折叠部323的相对两侧。其中，连接凸部3211设在第一焊接部321上，连接凸部3211在集流件300上朝盖板100的一侧凸设，以用于与盖板100通过超声波焊接；第二焊接部322用于与电芯的极耳焊接。
可选地，如图6所示，第二焊接部322的远离折叠部323的一侧还设有避让口340，避让口340用于在集流件300折叠后与防爆阀110的位置对应，且同时与避让孔210的位置对应，以便于电芯排气。
在一个实施例中，请参照图2和图5，绝缘件200还设有加强筋250，加强筋250位于平板部270的远离盖板100的一侧。
如图5所示，加强筋250用于增强绝缘件200的结构强度，避让孔210开设于加强筋250的所在区域。避让孔210同时可以充当透气孔，进而无需在绝缘件200上再次开设通孔，避免削弱绝缘件200的结构强度。
如图2和图5所示，加强筋250环绕在第一通孔220的外周，且加强筋250的一部分与周壁部230连接或一体设置。
在一个实施例中，请结合图3和图4，绝缘件200设有至少一个第一连接部260，第一连接部260位于绝缘件200的朝向盖板100的一侧；盖板100设有至少一个第二连接部120，第二连接部120设在盖板100的朝向绝缘件200的一侧，第二连接部120与第一连接部260一一对应，第二连接部120与第一连接部260限位配合。
第一连接部260和第二连接部120便于使盖板100和绝缘件200进行预装配和对位，且使盖板100和绝缘件200的连接更为可靠。
在一个实施例中，请参照图3和图4，第一连接部260和第二连接部120中的一者为连接柱，第一连接部260和第二连接部120中的另一者为连接孔，连接柱插入连接孔内。
连接孔和连接柱能够起到盖板100与绝缘件200在焊接前的预对位作用，提高装配精度。
如图4所示，绝缘件200上的第一连接部260为连接柱；如图3所示，盖板100上的第二连接部120为连接孔，连接孔用于与连接柱相匹配，以起到预对位作用。
如图4所示，第一连接部260设有四个，四个第一连接部260环绕在第一通孔220的外周；如图3所示，第二连接部120设有四个，以与第一连接部260一一对应。
例如，连接孔可以是盲孔。绝缘件200上的连接柱先与盖板100上的盲孔进行预对位，然后再进行防爆阀110与盖板100的焊接，还优化了防爆阀110的装配顺序，提高防爆阀110的装配效率。
可选地，端盖组件的装配过程为：
首先，通过连接柱与连接孔的配合，将绝缘件200卡设在盖板100上；
接着，集流件300的连接凸部3211依次经过缺口231、避让孔210以及第一通孔220，以与盖板100的朝向集流件200的表面接触，该过程中，缺口231对集流件300还起到一定的限位作用；
最后，将集流件200的连接凸部3211与盖板100通过超声焊等方式完成焊接固定。结合图1、图2和图6可知，集流件200的折叠部323的一部分和第二焊接部322的全部均延伸至绝缘件200外。
另一个实施例提供了一种单体电池，包括如上述任一个实施例所述的端盖组件。
该单体电池包括前述的端盖组件，绝缘件200设有与防爆阀110的位置至少部分或全部匹配的避让孔210，一方面，在进行防爆阀110与盖板100的焊接时，激光能够减少或避免对绝缘件200的烧伤，另一方面，绝缘件200与盖板100固定时，能够降低或避免因 盖板100相对绝缘件200的振动而导致对防爆阀110产生的损害，保证防爆性能，提高电池产品的良品率。
例如，该单体电池可以是锂离子二次电池、锂离子一次电池、锂硫电池、钠锂离子电池、钠离子电池或镁离子电池等，对此不做限定。电池的形状可以是圆柱体、扁平体、长方体或其它形状等，对此也不做限定。
还有一个实施例提供了一种电池模组，包括至少一个如上述实施例所述的单体电池。
该电池模组包括前述的单体电池，绝缘件200设有与防爆阀110的位置至少部分或全部匹配的避让孔210，一方面，在进行防爆阀110与盖板100的焊接时，激光能够减少或避免对绝缘件200的烧伤，另一方面，绝缘件200与盖板100固定时，能够减少或避免因盖板100相对绝缘件200的振动而导致对防爆阀110产生的损害，保证防爆性能，提高电池产品的良品率。
该电池模组包括至少一个前述的单体电池，例如可以是三个单体电池或四个单体电池等，以具备更大的电能输出能力。
还有一个实施例提供了一种用电设备，包括如上述实施例所述的电池模组。
该用电设备包括前述的电池模组，绝缘件200设有与防爆阀110的位置至少部分或全部匹配的避让孔210，一方面，在进行防爆阀110与盖板100的焊接时，激光能够减少或避免对绝缘件200的烧伤，另一方面，绝缘件200与盖板100固定时，能够减少或避免因盖板100相对绝缘件200的振动而导致对防爆阀110产生的损害，保证防爆性能，提高电池产品的良品率。
该用电设备可以有多种形式，例如：手机、平板、笔记本电脑、电动车、航天器、电动玩具和电动工具等。
在本申请的描述中，需要理解的是，术语“中心”、“纵向”、“横向”、“长度”、“宽度”、“厚度”、“上”、“下”、“前”、“后”、“左”、“右”、“竖直”、“水平”、“顶”、“底”、“内”、“外”、“顺时针”、“逆时针”、“轴向”、“径向”、“周向”等指示的方位或位置关系为基于附图所示的方位或位置关系，仅是为了便于描述本申请的实施例和简化描述，而不是指示或暗示所指的装置或元件必须具有特定的方位、以特定的方位构造和操作，因此不能理解为对本申请的限制。
此外，术语“第一”、“第二”仅用于描述目的，而不能理解为指示或暗示相对重要性或者隐含指明所指示的技术特征的数量。由此，限定有“第一”、“第二”的特征可以明示或者隐含地包括至少一个该特征。在本申请的描述中，“多个”的含义是至少两个，例如两个，三个等，除非另有明确具体的限定。
在本申请的实施例中，除非另有明确的规定和限定，术语“安装”、“相连”、“连接”、“固定”等术语应做广义理解，例如，可以是固定连接，也可以是可拆卸连接，或成一体；可以是机械连接，也可以是电连接；可以是直接相连，也可以通过中间媒介间接相连，可以是两个元件内部的连通或两个元件的相互作用关系，除非另有明确的限定。对于本领域的普通技术人员而言，可以根据具体情况理解上述术语在本申请中的具体含义。
在本申请中，除非另有明确的规定和限定，第一特征在第二特征“上”或“下”可以是第一和第二特征直接接触，或第一和第二特征通过中间媒介间接接触。而且，第一特征在第二特征“之上”、“上方”和“上面”可是第一特征在第二特征正上方或斜上方，或仅仅表示第一特征水平高度高于第二特征。第一特征在第二特征“之下”、“下方”和“下面”可以是第一特征在第二特征正下方或斜下方，或仅仅表示第一特征水平高度小于第二特征。
需要说明的是，当元件被称为“固定于”或“设置于”另一个元件，它可以直接在另一个元件上或者也可以存在居中的元件。当一个元件被认为是“连接”另一个元件，它可以是直接连接到另一个元件或者可能同时存在居中元件。本文所使用的术语“垂直的”、“水平的”、“上”、“下”、“左”、“右”以及类似的表述只是为了说明的目的，并不表示是唯一的实施方式。
以上所述实施例的各技术特征可以进行任意的组合，为使描述简洁，未对上述实施例中的各个技术特征所有可能的组合都进行描述，然而，只要这些技术特征的组合不存在矛盾，都应当认为是本说明书记载的范围。
以上所述实施例仅表达了本申请的几种实施方式，其描述较为具体和详细，但并不能因此而理解为对申请专利范围的限制。应当指出的是，对于本领域的普通技术人员来说，在不脱离本申请构思的前提下，还可以做出若干变形和改进，这些都属于本申请的保护范围。因此，本申请专利的保护范围应以所附权利要求为准。

Claims (15)

  1. 一种端盖组件，包括：
    盖板，所述盖板设有防爆阀；
    绝缘件，所述绝缘件与所述盖板固定连接，所述绝缘件位于所述盖板的一侧，所述绝缘件设有避让孔，所述避让孔贯通所述绝缘件设置，所述避让孔沿所述盖板的厚度方向的投影与所述防爆阀沿所述盖板的厚度方向的投影至少部分重合。
  2. 根据权利要求1所述的端盖组件，其中，所述避让孔的投影的外轮廓与所述防爆阀的投影的外轮廓之间呈间隔设置。
  3. 根据权利要求2所述的端盖组件，其中，所述避让孔的投影的外轮廓位于所述防爆阀的投影的外轮廓外。
  4. 根据权利要求2所述的端盖组件，其中，所述避让孔的投影的外轮廓与所述防爆阀的投影的外轮廓之间的间距大于或等于1mm。
  5. 根据权利要求1所述的端盖组件，其中，所述绝缘件包括平板部和周壁部，所述周壁部沿所述平板部的周向设置，所述周壁部设在所述平板部的远离所述盖板的一侧。
  6. 根据权利要求5所述的端盖组件，其中，所述端盖组件还包括集流件，所述集流件包括板体部和连接凸部，所述板体部位于所述平板部的远离所述盖板的一侧，所述连接凸部设于所述板体部的朝向所述盖板的一侧；所述平板部设有第一通孔，所述连接凸部的至少部分穿过所述第一通孔与所述盖板电性连接。
  7. 根据权利要求6所述的端盖组件，其中，所述周壁部设有缺口，所述缺口与所述避让孔连通。
  8. 根据权利要求6所述的端盖组件，其中，所述平板部设有限位结构，所述限位结构设在所述平板部的远离所述盖板的一侧。
  9. 根据权利要求8所述的端盖组件，其中，所述限位结构包括第一限位部、第二限位部和第三限位部，所述第一限位部、所述第二限位部和所述第三限位部均位于在所述第一通孔的外周，所述集流件设有防呆部和限位缺口；
    所述第一限位部用于与所述集流件的端部抵接，所述第二限位部用于与所述防呆部抵接，所述第三限位部用于与所述限位缺口限位配合。
  10. 根据权利要求5所述的端盖组件，其中，所述绝缘件还设有加强筋，所述加强筋位于所述平板部的远离所述盖板的一侧。
  11. 根据权利要求1-10任一项所述的端盖组件，其中，所述绝缘件设有至少一个第一 连接部，所述第一连接部位于所述绝缘件的朝向所述盖板的一侧；所述盖板设有至少一个第二连接部，所述第二连接部设在所述盖板的朝向所述绝缘件的一侧，所述第二连接部与所述第一连接部一一对应，所述第二连接部与所述第一连接部限位配合。
  12. 根据权利要求11所述的端盖组件，其中，所述第一连接部和所述第二连接部中的一者为连接柱，所述第一连接部和所述第二连接部中的另一者为连接孔，所述连接柱插入所述连接孔内。
  13. 一种单体电池，包括如权利要求1-12任一项所述的端盖组件。
  14. 一种电池模组，包括至少一个如权利要求13所述的单体电池。
  15. 一种用电设备，包括如权利要求14所述的电池模组。
PCT/CN2022/144074 2022-08-29 2022-12-30 端盖组件、单体电池、电池模组及用电设备 Ceased WO2024045459A1 (zh)

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