Battery cover plate and battery

Abstract

The utility model discloses a battery cover plate and a battery, the battery cover plate is suitable for being installed on a battery shell, a plastic supporting piece is arranged between the battery cover plate and a battery core pole group, and the battery cover plate comprises a light aluminum plate, an anti-explosion valve hole used for installing an anti-explosion valve is formed in the light aluminum plate; the supporting structure is connected with the light aluminum plate, and the supporting structure is located on the side, facing the battery cell pole group, of the light aluminum plate and extends towards the battery cell pole group. According to the battery cover plate disclosed by the embodiment of the utility model, the supporting structure is arranged on one side, facing the battery core pole group, of the light aluminum plate, so that the problems that the exhaust port of the anti-explosion valve is blocked and the like due to the fact that a plastic supporting piece is heated and melted can be avoided, the use safety of the battery can be improved, the service life of the battery is prolonged, the use effect is better, and the application range is wider.

Description

Technical Field

[0001] The utility model relates to the technical field of battery manufacturing, in particular to a battery cover plate and a battery with the battery cover plate. Background Art

[0002] As lithium-ion battery technology matures, lithium-ion batteries are widely used as power batteries in electric vehicles and energy storage fields, and the requirements for the performance and safety of lithium-ion batteries are increasing. As an accessory in lithium-ion batteries, the lithium battery top cover firstly acts as a seal by isolating the internal and external environments after welding with the aluminum shell, and secondly, it connects the internal and external circuits and transmits the internal current of the battery to the outside through the top cover poles, playing a guiding role. The traditional top cover is generally composed of a plain aluminum plate, positive and negative upper poles, positive and negative lower poles, positive and negative upper plastics, lower plastics, sealing rings, explosion-proof valves, and explosion-proof valve protective films.

[0003] At present, the most commonly used positive electrode cover is equipped with a plastic support. When a short circuit occurs inside the battery cell and high-temperature and high-pressure gas is generated in a short period of time, the plastic support of the cover is melted by the heat, resulting in a loss of support between the battery cell electrode group and the cover. Under high pressure, the electrode group will move toward the position of the explosion-proof valve, resulting in blockage of the explosion-proof valve exhaust port, which in turn causes poor exhaust, shell rupture and other problems. There is room for improvement. Utility Model Content

[0004] The utility model aims to solve at least one of the technical problems existing in the prior art. To this end, the utility model provides a battery cover plate, which can avoid the blockage of the explosion-proof valve hole, improve the safety of use, and extend the service life.

[0005] According to the battery cover of the embodiment of the utility model, the battery cover is suitable for being installed in the battery casing and is provided with a plastic support between the battery casing and the battery cell pole group, and comprises: a plain aluminum plate, the plain aluminum plate is provided with an explosion-proof valve hole for installing an explosion-proof valve; a support structure, the support structure is connected to the plain aluminum plate, the support structure is located on the side of the plain aluminum plate facing the battery cell pole group and extends toward the battery cell pole group.

[0006] According to the battery cover plate of the embodiment of the utility model, by arranging a support structure on the side of the bare aluminum plate facing the battery cell electrode group, it is possible to avoid problems such as the blockage of the exhaust port of the explosion-proof valve due to the melting of the plastic support due to heat, thereby improving the safety of battery use, extending the service life of the battery, achieving better use effect and a wider range of applications.

[0007] According to the battery cover of some embodiments of the present invention, the support structure is constructed as a support plate, which is connected to the side of the bare aluminum plate facing the battery cell electrode group and is located at the end edge of the side.

[0008] According to the battery cover of some embodiments of the present invention, the supporting structure includes a first sub-plate and a second sub-plate, the first sub-plate is connected to the second sub-plate by bending, the first sub-plate is connected to the side of the bare aluminum plate, and the second sub-plate is formed with a pressing surface for supporting the battery cell electrode group.

[0009] According to the battery cover plate of some embodiments of the present invention, the second sub-plate is arranged in parallel and spaced apart from the bare aluminum plate.

[0010] According to the battery cover of some embodiments of the present invention, the plane where the first sub-panel is located is perpendicular to the plane where the bare aluminum plate is located, and the plane where the first sub-panel is located is perpendicular to the plane where the second sub-panel is located.

[0011] According to some embodiments of the utility model, the battery cover also includes: a lower plastic, which is connected to the side of the plain aluminum plate facing the battery cell electrode group, the first sub-plate is located on the outside of the lower plastic, and the end of the lower plastic extends between the plain aluminum plate and the second sub-plate.

[0012] According to the battery cover of some embodiments of the present invention, the second sub-plate extends between the plastic support and the bare aluminum plate, and the distance between the second sub-plate and the battery cell electrode group is smaller than the distance between the second sub-plate and the bare aluminum plate.

[0013] According to the battery cover plate of some embodiments of the present invention, the support structure and the bare aluminum plate are formed as one piece.

[0014] According to the battery cover of some embodiments of the present invention, the distance between the bottom surface of the explosion-proof valve hole and the first end of the bare aluminum plate is smaller than the distance between the bottom surface of the explosion-proof valve hole and the second end of the bare aluminum plate, and the supporting structure is located on the side of the first end and / or the second end of the bare aluminum plate facing the battery cell electrode group.

[0015] The utility model also provides a battery.

[0016] A battery according to an embodiment of the utility model comprises any one of the battery cover plates described above.

[0017] The battery and the battery cover mentioned above have the same advantages as those of the prior art, which will not be described in detail here.

[0018] Additional aspects and advantages of the present invention will be given in part in the following description, and in part will become apparent from the following description, or will be learned through the practice of the present invention. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] The above and / or additional aspects and advantages of the present invention will become apparent and easily understood from the description of the embodiments in conjunction with the following drawings, in which:

[0020] Figure 1 The structure of the battery cover according to the embodiment of the utility model is shown in FIG. Figure 1 ;

[0021] Figure 2 is a partial cross-sectional view of a battery according to an embodiment of the utility model;

[0022] Figure 3 The structure of the battery cover according to the embodiment of the utility model is shown in FIG. Figure 2 .

[0023] Reference numerals:

[0024] Battery 100,

[0025] Battery housing 1, battery cell group 2, plastic support 3,

[0026] Battery cover 4, plain aluminum plate 41, first end 411, second end 412, explosion-proof valve hole 413, support structure 42, first sub-plate 421, second sub-plate 422, lower plastic 43, upper plastic 44, pole 45, explosion-proof valve 46. DETAILED DESCRIPTION

[0027] The embodiments of the present invention are described in detail below, and examples of the embodiments are shown in the accompanying drawings, wherein the same or similar reference numerals throughout represent the same or similar elements or elements having the same or similar functions. The embodiments described below with reference to the accompanying drawings are exemplary and are only used to explain the present invention, and cannot be understood as limiting the present invention.

[0028] In the description of the present utility model, it is necessary to understand that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside", "clockwise", "counterclockwise", "axial", "radial", "circumferential" and the like indicate positions or positional relationships based on the positions or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present utility model and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as a limitation on the present utility model. In addition, features defined as "first" and "second" may explicitly or implicitly include one or more of such features. In the description of the present utility model, unless otherwise specified, "multiple" means two or more.

[0029] In the description of the present invention, it should be noted that, unless otherwise clearly specified and limited, the terms "installation", "connection" and "connection" should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection, or it can be indirectly connected through an intermediate medium, or it can be the internal communication of two components. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0030] Reference below Figure 1-Figure 3 The battery cover plate 4 according to the embodiment of the utility model can avoid the blockage of the explosion-proof valve hole 413, thereby improving the safety of use and extending the service life.

[0031] like Figure 1-Figure 3 As shown, the battery cover 4 according to the embodiment of the utility model is suitable for being installed in the battery housing 1 and a plastic support 3 is provided between the battery cell electrode group 2 and includes: a bare aluminum plate 41 and a support structure 42 .

[0032] The bare aluminum plate 41 is provided with an explosion-proof valve hole 413 for installing an explosion-proof valve 46 . The support structure 42 is connected to the bare aluminum plate 41 . The support structure 42 is located on a side of the bare aluminum plate 41 facing the cell pole group 2 and extends toward the cell pole group 2 .

[0033] Among them, the battery cover 4, as an accessory in the battery 100, is mainly composed of a plain aluminum plate 41, positive and negative upper poles 45, positive and negative lower poles 45, positive and negative upper plastics 44, lower plastics 43, sealing rings, explosion-proof valves 46 and explosion-proof valve 46 protective films. The battery cover 4 can be welded with the battery shell 1 to isolate the internal and external environments to play a sealing role, thereby ensuring the reliability of the internal operating environment of the battery 100. The battery shell 1 can be set as an aluminum shell, and the battery cover 4 can be used to transmit the internal current of the battery 100 to the outside through the top cover pole 45, thereby playing a diversion role.

[0034] Specifically, the battery shell 1 is arranged on the outside of the battery cell pole group 2, and the battery shell 1 plays a role in supporting and protecting the battery cell pole group 2. The battery shell 1 can be set as an aluminum shell, etc. The battery cover 4 is located at the end of the battery cell pole group 2, and can be connected to the battery shell 1 by welding or the like, so that the battery cell pole group 2 and other components are in a sealed environment, ensuring the operating stability of the battery cell pole group 2, etc. At the same time, when the battery 100 is subjected to external forces, the battery shell 1 and the battery cover 4 can protect the battery cell pole group 2, etc., improve the safety of use, and a plastic support 3 is arranged between the battery cover 4 and the battery cell pole group 2, the plastic support 3 can support the battery cover 4, and when subjected to external collision, the plastic support 3 can play a buffering role to weaken the force, thereby ensuring the operating stability of the battery cell pole group 2.

[0035] Furthermore, the battery cover 4 is provided with a plain aluminum plate 41, and the battery shell 1 is fixedly connected to the plain aluminum plate 41 by welding or the like, so that the battery shell 1 is connected to the battery cover 4, so that a sealed space is formed inside the battery 100. At the same time, the plain aluminum plate 41 is provided with an explosion-proof valve hole 413, and the explosion-proof valve 46 can be installed in the explosion-proof valve hole 413. When the battery 100 is over-pressured or the temperature is too high, the explosion-proof valve 46 can automatically open the valve to dissipate the high-pressure gas inside the battery 100, thereby avoiding the battery 100 from exploding due to excessive internal pressure and other problems, thereby improving the safety of use.

[0036] At the same time, the battery cover 4 is also provided with a support structure 42, and the support structure 42 is connected to the bare aluminum plate 41, and the support structure 42 is located on the side of the bare aluminum plate 41 facing the battery cell pole group 2 and extends toward the battery cell pole group 2, that is, the support structure 42 is located between the bare aluminum plate 41 and the battery cell pole group 2. When the battery 100 is in operation, its internal temperature will increase, which will cause the plastic support 3 to melt, etc., causing the plastic support 3 to lose its supporting function. The support structure 42 is arranged on the side of the bare aluminum plate 41 facing the battery cell pole group 2 and extends toward the battery cell pole group 2, so that after the plastic support 3 loses its supporting function, the support structure 42 can support the bare aluminum plate 41, so that there is a space between the bare aluminum plate 41 and the battery cell pole group 2, thereby avoiding the explosion-proof valve 46 from being blocked, causing the battery 100 shell to rupture due to high pressure, etc., thereby improving the safety of the battery 100.

[0037] According to the battery cover plate 4 of the embodiment of the utility model, by setting a support structure 42 on the side of the bare aluminum plate 41 facing the battery cell electrode group 2, it is possible to avoid problems such as the exhaust port of the explosion-proof valve 46 being blocked due to the melting of the plastic support 3 due to heat, thereby improving the safety of the battery 100, extending the service life of the battery 100, and achieving better use effect and a wider range of applications.

[0038] In some embodiments, the support structure 42 is configured as a support plate, which is connected to the side of the bare aluminum plate 41 facing the cell electrode group 2 and is located at the end edge of the side.

[0039] Specifically, the support structure 42 is located on the side of the bare aluminum plate 41 facing the battery cell pole group 2, extends toward the battery cell pole group 2, and the support structure 42 is configured as a support plate. Setting the support structure 42 as a plate-like structure can increase the support area of ​​the support structure 42, improve the support stability, and increase the area of ​​the connection between the support structure 42 and the bare aluminum plate 41, thereby ensuring the reliability of the connection between the support plate and the bare aluminum plate 41. At the same time, the use of a plate-like structure can reduce manufacturing materials and reduce manufacturing costs. The plate-like structure occupies a small space and is light in weight, which can reduce the volume of the battery 100 and improve lightweight.

[0040] Furthermore, the support plate is connected to the side of the bare aluminum plate 41 facing the battery cell pole group 2 and is located at the end edge of the side. The support plate is located at the end edge of the side of the bare aluminum plate 41, so that the support plate does not affect the operation of other components while providing support. When the plastic support 3 loses its supporting function, the support plate can support the bare aluminum plate 41, so that there is space between the bare aluminum plate 41 and the battery cell pole group 2, thereby preventing the explosion-proof valve 46 from being blocked, causing the battery 100 casing to rupture due to high pressure, etc., thereby improving the safety of the battery 100.

[0041] In some embodiments, the support structure 42 includes a first sub-plate 421 and a second sub-plate 422. The first sub-plate 421 and the second sub-plate 422 are bent and connected. The first sub-plate 421 is connected to the side of the bare aluminum plate 41, and the second sub-plate 422 is formed with a pressure surface for supporting the battery cell electrode group 2.

[0042] Specifically, Figure 1-Figure 2 As shown, the support structure 42 is connected to the bare aluminum plate 41, and the support structure 42 is provided with a first sub-plate 421 and a second sub-plate 422, one end of the first sub-plate 421 is connected to the second sub-plate 422 by bending, and the other end of the first sub-plate 421 is connected to the side of the bare aluminum plate 41, so that the support structure 42 is fixedly connected to the bare aluminum plate 41, one end of the second sub-plate 422 is connected to the first sub-plate 421 by bending, and the other end is a free end, and the second sub-plate 422 is formed with a pressing surface, and the second sub-plate 422 can be pressed against the battery cell electrode group 2 through the pressing surface, so that the support structure 42 can support the bare aluminum plate 41. When the operating temperature of the battery 100 increases, the plastic support 3 melts and loses its supporting function. At this time, the pressing surface of the second sub-plate 422 can be pressed against the battery cell electrode group 2, and the first sub-plate 421 is bent and connected to the second sub-plate 422, so that there is a space between the bare aluminum plate 41 and the battery cell electrode group 2, which can prevent the explosion-proof valve 46 from being blocked, thereby improving the safety of the battery 100.

[0043] In some embodiments, the second sub-plate 422 is arranged parallel to and spaced apart from the bare aluminum plate 41, the first sub-plate 421 is bent and connected to the second sub-plate 422, the second sub-plate 422 can be pressed against the battery cell pole group 2 through the pressing surface, and the second sub-plate 422 is arranged parallel to and spaced apart from the bare aluminum plate 41, that is, the pressing surface of the second sub-plate 422 is arranged parallel to and spaced apart from the bare aluminum plate 41, the bare aluminum plate 41 is parallel to the end plane of the battery cell pole group 2, so that the pressing surface of the second sub-plate 422 is also arranged parallel to the end plane of the battery cell pole group 2, when the plastic support 3 melts and loses its supporting function, the pressing surface of the second sub-plate 422 can press against the battery cell pole group 2, and the second sub-plate 422 is arranged parallel to and spaced apart from the bare aluminum plate 41, so that the pressing surface can be completely in contact with the battery cell pole group 2, thereby ensuring the stability of the support, and ensuring that there is space between the bare aluminum plate 41 and the battery cell pole group 2, thereby avoiding the explosion-proof valve 46 from being blocked, and improving the safety of the battery 100.

[0044] In some embodiments, the plane where the first sub-board 421 is located is perpendicular to the plane where the bare aluminum board 41 is located, and the plane where the first sub-board 421 is located is perpendicular to the plane where the second sub-board 422 is located.

[0045] Specifically, Figure 1-Figure 2 As shown, the support structure 42 is provided with a first sub-plate 421 and a second sub-plate 422 which are connected by bending. The plane where the first sub-plate 421 is located is perpendicular to the plane where the bare aluminum plate 41 is located, and the plane where the first sub-plate 421 is located is perpendicular to the plane where the second sub-plate 422 is located, so that the second sub-plate 422 is parallel and spaced apart from the bare aluminum plate 41, so that the pressing surface of the second sub-plate 422 can be completely in contact with the battery cell electrode group 2, thereby ensuring the stability of the support, and ensuring that there is space between the bare aluminum plate 41 and the battery cell electrode group 2, avoiding the explosion-proof valve 46 from being blocked, and improving the safety of the battery 100. At the same time, the plane where the first sub-plate 421 is located is perpendicular to the plane where the bare aluminum plate 41 is located, and the plane where the first sub-plate 421 is located is perpendicular to the plane where the second sub-plate 422 is located, so that when the external force is transmitted along the first sub-plate 421 and the second sub-plate 422, the direction of force conduction can be changed, thereby weakening the effect of the force and improving the safety of use.

[0046] In some embodiments, the battery cover 4 further includes: a lower plastic 43 .

[0047] Specifically, Figure 1-Figure 2 As shown, the battery cover 4 is further provided with a lower plastic 43, which can prevent the battery cell pole group 2 from moving and can play an insulating role. The lower plastic 43 is connected to the side of the bare aluminum plate 41 facing the battery cell pole group 2, that is, the lower plastic 43 is arranged between the battery cell pole group 2 and the bare aluminum plate 41, and the first sub-plate 421 is located on the outside of the lower plastic 43, so that when the lower plastic 43 is connected to the side of the bare aluminum plate 41 facing the battery cell pole group 2, there is no need to avoid the first sub-plate 421, and thus there is no need to re-open the mold, thereby reducing the manufacturing cost, and the end of the lower plastic 43 extends between the bare aluminum plate 41 and the second sub-plate 422, that is, when the plastic support 3 melts and loses its supporting function, the support structure 42 can support the bare aluminum plate 41 and the lower plastic 43, avoid the lower plastic 43 from contacting the battery cell pole group 2, and avoid the explosion-proof valve hole 413 from being blocked, thereby improving the safety of use.

[0048] In some embodiments, the second sub-board 422 extends between the plastic support 3 and the bare aluminum board 41 , and the distance between the second sub-board 422 and the battery cell electrode group 2 is smaller than the distance between the second sub-board 422 and the bare aluminum board 41 .

[0049] Specifically, Figure 1-Figure 2As shown, the second sub-plate 422 is formed with a pressing surface for supporting the battery cell pole group 2, and the second sub-plate 422 extends between the plastic support member 3 and the bare aluminum plate 41, that is, the pressing surface of the second sub-plate 422 is located between the plastic support member 3 and the bare aluminum plate 41, and when the plastic support member 3 melts and loses its supporting function, the pressing surface of the second sub-plate 422 can be pressed against the battery cell pole group 2, thereby allowing the bare aluminum plate 41 and the battery cell pole group 2 to have a spacing space, thereby improving safety in use, and the spacing between the second sub-plate 422 and the battery cell pole group 2 is smaller than the spacing between the second sub-plate 422 and the bare aluminum plate 41, that is, the spacing between the second sub-plate 422 and the bare aluminum plate 41 is larger, so that when the second sub-plate 422 is pressed against the battery cell pole group 2, the spacing between the bare aluminum plate 41 and the battery cell pole group 2 is larger, which can further avoid blockage of the explosion-proof valve hole 413 and improve safety in use.

[0050] In some embodiments, the support structure 42 and the bare aluminum plate 41 are integrally formed. The one-piece forming process refers to completing the entire part forming process in one mold at one time. Compared with the traditional step-by-step manufacturing process, one-piece forming can greatly reduce the cost of part production and faster production speed. Various parts, products, tools, etc. can be produced in a very short time. The one-piece forming process has the advantages of high manufacturing precision, low cost and high production efficiency. Setting the support structure 42 and the bare aluminum plate 41 as one-piece forming can avoid problems such as failure of the connection, reduce manufacturing costs, and achieve better use effects.

[0051] In some embodiments, the distance between the bottom surface of the explosion-proof valve hole 413 and the first end 411 of the bare aluminum plate 41 is smaller than the distance between the bottom surface and the second end 412 of the bare aluminum plate 41, and the support structure 42 is located on the side of the first end 411 and / or the second end 412 of the bare aluminum plate 41 facing the battery cell pole group 2, that is, the support structure 42 may be located only on the side of the first end 411 of the bare aluminum plate 41 facing the battery cell pole group 2, or only on the side of the second end 412 of the bare aluminum plate 41 facing the battery cell pole group 2, or may be located at both the side of the first end 411 facing the battery cell pole group 2 and the side of the second end 412 facing the battery cell pole group 2.

[0052] Specifically, Figure 1 and Figure 3 As shown, the plain aluminum plate 41 is provided with a first end 411 and a second end 412, and the plain aluminum plate 41 is formed with an explosion-proof valve hole 413, and the explosion-proof valve 46 can be installed in the explosion-proof valve hole 413. When the battery 100 is over-pressured or the temperature is too high, the explosion-proof valve 46 can automatically open the valve to disperse the high-pressure gas inside the battery 100, thereby avoiding the battery 100 from exploding due to excessive internal pressure and other problems, thereby improving the safety of use.

[0053] Furthermore, the distance between the bottom surface of the explosion-proof valve hole 413 and the first end 411 of the bare aluminum plate 41 is smaller than the distance between the bottom surface of the explosion-proof valve hole 413 and the second end 412 of the bare aluminum plate 41. Figure 2 The lower edge of the explosion-proof valve hole 413 in the middle, and in the present embodiment, the support structure 42 is located on the side of the first end 411 of the bare aluminum plate 41 facing the battery cell pole group 2, that is, the distance between the bottom surface of the explosion-proof valve hole 413 and the first end 411 of the bare aluminum plate 41 is small, and the distance between the support structure 42 and the bottom surface of the explosion-proof valve hole 413 is also small. When the plastic support 3 melts and loses its supporting function, the support structure 42 can support the bare aluminum plate 41, and the distance between the support structure 42 and the bottom surface of the explosion-proof valve hole 413 is set to be small, so that the support structure 42 can better keep the bottom surface of the explosion-proof valve hole 413 away from the battery cell pole group 2, avoid blockage of the explosion-proof valve hole 413, and improve safety in use.

[0054] The utility model also provides a battery 100 .

[0055] The battery 100 according to the embodiment of the present invention includes any one of the battery cover plates 4 described above.

[0056] According to the battery 100 of the embodiment of the utility model, by providing a support structure 42 on the side of the bare aluminum plate 41 facing the battery cell electrode group 2, it is possible to avoid problems such as the exhaust port of the explosion-proof valve 46 being blocked due to the melting of the plastic support 3 due to heat, thereby improving the safety of the battery 100, extending the service life of the battery 100, achieving better use effects and a wider range of applications.

[0057] In the description of this specification, the description with reference to the terms "one embodiment", "some embodiments", "illustrative embodiments", "examples", "specific examples", or "some examples" means that the specific features, structures, materials or characteristics described in conjunction with the embodiment or example are included in at least one embodiment or example of the utility model. In this specification, the schematic representation of the above terms does not necessarily refer to the same embodiment or example. Moreover, the specific features, structures, materials or characteristics described can be combined in any one or more embodiments or examples in a suitable manner.

[0058] Although the embodiments of the present invention have been shown and described, those skilled in the art will appreciate that various changes, modifications, substitutions and variations may be made to the embodiments without departing from the principles and spirit of the present invention, and that the scope of the present invention is defined by the claims and their equivalents.

Claims

1. A battery cover, characterized in that: The battery cover is suitable for being installed in the battery housing and is provided with a plastic support between the battery cover and the battery cell electrode group, and comprises: A plain aluminum plate, wherein the plain aluminum plate is provided with an explosion-proof valve hole for installing an explosion-proof valve; A support structure, wherein the support structure is connected to the bare aluminum plate, and the support structure is located on a side of the bare aluminum plate facing the battery cell pole group and extends toward the battery cell pole group.

2. The battery cover according to claim 1, characterized in that: The support structure is constructed as a support plate, which is connected to the side of the bare aluminum plate facing the battery cell electrode group and is located at the end edge of the side.

3. The battery cover according to claim 2, characterized in that: The support structure includes a first sub-plate and a second sub-plate, the first sub-plate and the second sub-plate are connected by bending, the first sub-plate is connected to the side surface of the bare aluminum plate, and the second sub-plate is formed with a pressing surface for supporting the battery cell electrode group.

4. The battery cover according to claim 3, characterized in that: The second sub-plate is arranged in parallel and spaced apart from the bare aluminum plate.

5. The battery cover according to claim 3, characterized in that: The plane where the first sub-board is located is perpendicular to the plane where the bare aluminum board is located, and the plane where the first sub-board is located is perpendicular to the plane where the second sub-board is located.

6. The battery cover according to claim 3, characterized in that: Also includes: The lower plastic is connected to a side of the bare aluminum plate facing the battery cell electrode group, the first sub-plate is located outside the lower plastic, and an end of the lower plastic extends between the bare aluminum plate and the second sub-plate.

7. The battery cover according to claim 3, characterized in that: The second sub-plate extends between the plastic support and the bare aluminum plate, and the distance between the second sub-plate and the battery cell electrode group is smaller than the distance between the second sub-plate and the bare aluminum plate.

8. The battery cover according to claim 1, characterized in that: The supporting structure and the bare aluminum plate are formed in one piece.

9. The battery cover according to claim 1, characterized in that: The distance between the bottom surface of the explosion-proof valve hole and the first end of the bare aluminum plate is smaller than the distance between the bottom surface and the second end of the bare aluminum plate, and the supporting structure is located on the side of the first end and / or the second end of the bare aluminum plate facing the battery cell electrode group.

10. A battery, characterized in that: A battery cover comprising the battery cover according to any one of claims 1 to 9.

Images