Battery cover plate and battery
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- 安徽得壹能源科技有限公司
- Filing Date
- 2025-04-07
- Publication Date
- 2026-06-23
Smart Images
Figure CN224400620U_ABST
Abstract
Description
Technical Field
[0001] This application relates to the field of batteries, and in particular to a battery cover and a battery. Background Technology
[0002] Among related technologies, lithium-ion batteries, as an important component of the new energy field, have achieved significant development due to their advantages such as light weight, high specific energy, high operating voltage, long lifespan, and low self-discharge. They are rapidly being applied in various modern mobile communication devices and portable electronic devices. Simultaneously, with the rapid development of electric vehicles and emerging electronic products, higher demands are being placed on battery safety performance.
[0003] Currently, battery cell terminals are usually assembled by riveting and then welding. The terminals, aluminum blocks, and plastic are riveted together. After riveting the plastic with the height of the aluminum blocks, an additional laser welding process is required. However, poor welding is prone to occur during laser welding, which increases production costs. Utility Model Content
[0004] This application aims to address at least one of the technical problems existing in the prior art. To this end, one objective of this application is to provide a battery cover that eliminates the welding process, reduces production costs, and improves production yield.
[0005] This application also proposes a battery having the aforementioned battery cover.
[0006] A battery cover according to an embodiment of this application includes: a cover body having a mounting hole extending through it in the thickness direction; a terminal post housed within the mounting hole and spaced apart from the inner wall of the mounting hole, the terminal post having a first mating portion extending in the thickness direction formed on its radial outer periphery; a first insulating member disposed on the outer peripheral wall of the terminal post and at least a portion of the first insulating member covering the surface of the first mating portion; wherein the cover body has a second mating portion, at least a portion of the second mating portion extending toward the terminal post and abutting against the side of the first insulating member away from the first mating portion.
[0007] According to an embodiment of this application, the battery cover has a terminal post and a cover body. A first mating portion is formed on the radial outer periphery of the terminal post, and a first insulating member is provided on the outer surface of the first mating portion. A second mating portion is provided on the cover body to abut against the first insulating member. The second mating portion abuts against the first insulating member to fix the cover body and the terminal post, eliminating the need for welding, reducing production costs, and improving production yield.
[0008] In some embodiments of this application, the pole post includes: a body portion, which is received within the mounting hole and spaced apart from the inner wall of the mounting hole; and an extension portion, which is disposed on the radial outer periphery of the body portion and extends in a direction away from the body portion, and the extension portion is provided with the first mating portion.
[0009] In some embodiments of this application, the first insulating member includes: a first insulating portion disposed on the outer periphery of the extension portion; and a second insulating portion disposed at one end of the first insulating portion along the thickness direction and covering the surface of the first mating portion.
[0010] In some embodiments of this application, the second mating portion includes: a first extension section, which is connected to the cover plate body and extends along the thickness direction, and abuts against the outer periphery of the first insulating portion; a second extension section, which is disposed at the free end of the first extension section and extends toward the body portion, and abuts against one side of the second insulating portion along the thickness direction; and a third extension section, which is disposed at the free end of the second extension section and extends toward the extension portion, and abuts against the side of the second insulating portion toward the body portion.
[0011] In some embodiments of this application, the free end of the third extension is spaced apart from the extension portion.
[0012] In some embodiments of this application, a seal is provided between the third extension and the main body.
[0013] In some embodiments of this application, the thickness of the seal is d and satisfies: 0.7mm≤d.
[0014] In some embodiments of this application, a second insulating element is provided between the inner wall of the mounting hole and the pole post.
[0015] In some embodiments of this application, the inner wall of the mounting hole is formed with a stepped surface, and the second insulating member includes: a first segment disposed between the stepped surface and the pole post; and a second segment connected to the first segment and disposed between the inner wall of the mounting hole and the pole post.
[0016] The battery of the present application embodiment is briefly described below.
[0017] The battery according to the embodiments of this application is provided with the battery cover plate of the above embodiments. Since the battery of the embodiments of this application is provided with the battery cover plate of the above embodiments, the battery cover plate of the battery has a terminal post and a cover plate body. A first mating part is formed on the radial outer periphery of the terminal post. A first insulating member is provided on the outer surface of the first mating part. A second mating part is provided on the cover plate body to abut against the first insulating member. The second mating part abuts against the first insulating member to achieve the fixation between the cover plate body and the terminal post. No welding is required, reducing production costs and improving production yield.
[0018] Additional aspects and advantages of this application will be set forth in part in the description which follows, and in part will be obvious from the description, or may be learned by practice of this application. Attached Figure Description
[0019] The above and / or additional aspects and advantages of this application will become apparent and readily understood from the description of the embodiments taken in conjunction with the following drawings, in which:
[0020] Figure 1 This is a schematic diagram of the structure of the battery cover according to an embodiment of this application;
[0021] Figure 2 yes Figure 1 A partial sectional view of the battery cover.
[0022] Figure 3 yes Figure 1 A schematic diagram of the structure of the first insulating component of the battery cover.
[0023] Figure label:
[0024] 10. Battery cover;
[0025] 11. Cover plate body; 111. Second mating part;
[0026] 1111, First extension section; 1112, Second extension section; 1113, Third extension section; 112, Step surface;
[0027] 12. Pole post; 121. Body part; 122. Extension part; 1221. First mating part;
[0028] 13. First insulating element; 131. First insulating part; 132. Second insulating part; 14. Sealing element;
[0029] 15. Second insulating component; 151. First section; 152. Second section. Detailed Implementation
[0030] The embodiments of this application are described in detail below. Examples of these embodiments are shown in the accompanying drawings, wherein the same or similar reference numerals denote the same or similar elements or elements having the same or similar functions throughout. The embodiments described below with reference to the accompanying drawings are exemplary and are only used to explain this application, and should not be construed as limiting this application.
[0031] The following is for reference. Figures 1-3 The battery cover 10 according to an embodiment of the present application is described. The battery cover 10 includes a cover body 11, a terminal post 12 and a first insulating member 13.
[0032] The cover plate body 11 has a through mounting hole extending along its thickness direction. A pole post 12 is received within the mounting hole and spaced apart from its inner wall. A first mating portion 1221 extending along its thickness direction is formed on the radial outer periphery of the pole post 12. A first insulating member 13 is disposed on the outer peripheral wall of the pole post 12, and at least a portion of the first insulating member 13 covers the surface of the first mating portion 1221. The cover plate body 11 also has a second mating portion 111, at least a portion of which extends toward the pole post 12 and abuts against the side of the first insulating member 13 away from the first mating portion 1221.
[0033] Currently, battery cell terminals are usually assembled by riveting and then welding. The terminals, aluminum blocks, and plastic are riveted together. After riveting the plastic with the height of the aluminum blocks, an additional laser welding process is required. However, poor welding is prone to occur during laser welding, which increases production costs.
[0034] like Figure 1 and Figure 2 As shown, specifically, the battery cover 10 may include a cover body 11 and a terminal post 12. The cover body 11 may have a mounting hole that extends through the thickness direction. The terminal post 12 may be accommodated in the mounting hole, and the terminal post 12 is spaced apart from the inner wall of the mounting hole to prevent the terminal post 12 from communicating with the cover body 11. A first mating portion 1221 may be formed on the radial outer periphery of the terminal post 12. The first mating portion 1221 may extend along the thickness direction, wherein the thickness direction may be the thickness direction of the cover body 11.
[0035] The battery cover 10 may further include a first insulating member 13, which may be disposed on the outer peripheral wall of the terminal post 12. The first insulating member 13 can separate the terminal post 12 from the cover body 11 to achieve insulation and sealing. At least a portion of the first insulating member 13 may extend toward the terminal post 12 and cover the first mating portion 1221. The cover body 11 may be provided with a second mating portion 111, at least a portion of which may extend toward the terminal post 12 and abut against the side of the first insulating member 13 away from the first mating portion 1221. It is understood that the first insulating member 13 may be located between the first mating portion 1221 and the second mating portion 111. The second mating portion 111 abuts against the first insulating member 13 to fix the cover body 11 and the terminal post 12. Compared with the prior art, welding is not required, reducing production costs and improving production yield. It also eliminates the aluminum pressure block in the prior art, reduces the height of the terminal post 12, and improves the space utilization of the battery.
[0036] In short, the battery cover 10 of this application embodiment has a terminal post 12 and a cover body 11. A first mating portion 1221 is formed on the radial outer periphery of the terminal post 12. A first insulating member 13 is provided on the outer surface of the first mating portion 1221. A second mating portion 111 is provided on the cover body 11 to abut against the first insulating member 13. The second mating portion 111 abuts against the first insulating member 13 to fix the cover body 11 and the terminal post 12, eliminating the need for welding, reducing production costs, and improving production yield.
[0037] like Figure 2 As shown, in some embodiments of this application, the terminal post 12 may include a body portion 121 and an extension portion 122. The body portion 121 may be received in a mounting hole and may be spaced apart from the inner wall of the mounting hole. The extension portion 122 may be disposed on the radial outer periphery of the body portion 121 and may extend in a direction away from the body portion 121. A first mating portion 1221 may be provided on the extension portion 122. In some embodiments, the first mating portion 1221 may be a protrusion. The first mating portion 1221 may be disposed on the surface of the extension portion 122 along the thickness direction and extend along the thickness direction. It should be noted that neither the body portion 121 nor the extension portion 122 contacts the battery cover plate 10 to avoid the terminal post 12 from being connected to the battery cover plate 10.
[0038] like Figure 2 and Figure 3As shown, in some embodiments of this application, the first insulating member 13 may include a first insulating portion 131 and a second insulating portion 132. The first insulating member 13 may be annular. The first insulating portion 131 may be disposed on the outer periphery of the extension portion 122 and may fit against the extension portion 122. The second insulating portion 132 may be disposed at one end of the first insulating portion 131 along the thickness direction and may cover the surface of the first mating portion 1221. The second insulating portion 132 may abut against the first mating portion 1221 and the second mating portion 111 respectively. The second mating portion 111 may abut against the side of the second insulating portion 132 facing the body portion 121, thereby achieving the limiting between the second mating portion 111 and the first mating portion 1221.
[0039] like Figure 2 As shown, in some embodiments of this application, the second mating portion 111 may include a first extension 1111, a second extension 1112, and a third extension 1113. The first extension 1111 can be connected to the cover plate body 11, and the first extension 1111 can extend along the thickness direction. The first extension 1111 can abut against the outer periphery of the first insulating portion 131. The second extension 1112 can be connected to the free end of the first extension 122, and the second extension 1112 can face towards the body. The second extension 1112 can abut against one side of the second insulating portion 132 along the thickness direction. The third extension 1113 can be disposed at the free end of the second extension 1112 and can extend toward the extension 122. The third extension 1113 can abut against the side of the second insulating portion 132 toward the body portion 121. The free end of the third extension 1113 is spaced apart from the extension 122 to prevent the terminal post 12 from being connected to the battery cover plate 10. In some embodiments, the second mating portion 111 can cover the surface of the first insulating member 13 by riveting. After the terminal post 12 is installed into the mounting hole, the second mating portion 111 is bent to achieve riveting.
[0040] like Figure 2 As shown, in some embodiments of this application, a sealing element 14 is provided between the third extension 1113 and the main body 121. The sealing element 14 can effectively prevent metal shavings from entering during cleaning, which could lead to insulation failure. In a specific embodiment, the sealing element 14 can be fixed between the third extension 1113 and the main body 121 by injection molding. The thickness of the sealing element 14 is d, which satisfies the relationship: 0.7mm≤d. It can be understood that the thickness of the sealing element 14 is greater than or equal to 0.7mm. By setting the thickness of the seal within the above range, it is possible to prevent the sealing element 14 from being broken down by current, which could lead to the problem of continuity between the terminal 12 and the battery cover 10.
[0041] like Figure 2 As shown, in some embodiments of this application, a second insulating member 15 is provided between the inner wall of the mounting hole and the terminal post 12. Specifically, the inner wall of the mounting hole can be formed with a stepped surface 112. The second insulating member 15 may include a first segment 151 and a second segment 152. The first segment 151 can be disposed between the stepped surface 112 and the terminal post 12, and the second segment 152 can be connected to the first segment 151. The second segment 152 can be disposed between the inner wall of the mounting hole and the terminal post 12. The second insulating member 15 can achieve insulation between the bottom end of the terminal post 12 and the battery cover plate 10. At the same time, the stepped surface 112 can play a role in supporting the terminal post 12 and limiting the position of the terminal post 12.
[0042] The battery of the present application embodiment is briefly described below.
[0043] The battery according to the present application embodiment is provided with the battery cover plate 10 of the above embodiment. Since the battery of the present application embodiment is provided with the battery cover plate 10 of the above embodiment, the battery cover plate 10 of the battery has a terminal post 12 and a cover plate body 11. A first mating part 1221 is formed on the radial outer periphery of the terminal post 12. A first insulating member 13 is provided on the outer surface of the first mating part 1221. A second mating part 111 is provided on the cover plate body 11 to abut against the first insulating member 13. The second mating part 111 abuts against the first insulating member 13 to fix the cover plate body 11 and the terminal post 12, eliminating the need for welding, reducing production costs and improving production yield.
[0044] In the description of this application, it should be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", "axial", "radial", "circumferential", etc., indicating the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings, are only for the convenience of describing this application and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of this application.
[0045] In the description of this application, "first feature" and "second feature" may include one or more of the features.
[0046] In the description of this application, "multiple" means two or more.
[0047] In the description of this application, the first feature being "above" or "below" the second feature may include the first and second features being in direct contact, or the first and second features being in contact through another feature between them.
[0048] In the description of this application, the terms "above," "over," and "on top" for the first feature and the second feature include the first feature being directly above or diagonally above the second feature, or simply indicate that the first feature is at a higher horizontal level than the second feature.
[0049] In the description of this specification, the references to terms such as "one embodiment," "some embodiments," "illustrative embodiment," "example," "specific example," or "some examples," etc., indicate that a specific feature, structure, material, or characteristic described in connection with that embodiment or example is included in at least one embodiment or example of this application. In this specification, the illustrative expressions of the above terms do not necessarily refer to the same embodiment or example. Furthermore, the specific features, structures, materials, or characteristics described may be combined in any suitable manner in one or more embodiments or examples.
[0050] Although embodiments of this application have been shown and described, those skilled in the art will understand that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of this application, the scope of which is defined by the claims and their equivalents.
Claims
1. A battery cover, characterized in that, include: The cover plate body has a mounting hole that extends through the thickness direction; An electrode post is housed within the mounting hole and spaced apart from the inner wall of the mounting hole, and a first mating portion extending in the thickness direction is formed on the radial outer periphery of the electrode post. A first insulating member is disposed on the outer peripheral wall of the pole post and at least a portion of the first insulating member covers the surface of the first mating portion; The cover plate body is provided with a second mating part, at least a portion of which extends toward the pole post and abuts against the side of the first insulating member away from the first mating part.
2. The battery cover according to claim 1, characterized in that, The pole includes: The main body is housed within the mounting hole and is spaced apart from the inner wall of the mounting hole; An extension portion is provided on the radial outer periphery of the main body portion and extends in a direction away from the main body portion, and the first mating portion is provided on the extension portion.
3. The battery cover according to claim 2, characterized in that, The first insulating element includes: A first insulating portion is disposed on the outer periphery of the extension portion; The second insulating portion is disposed at one end of the first insulating portion along the thickness direction and covers the surface of the first mating portion.
4. The battery cover according to claim 3, characterized in that, The second mating part includes: A first extension section is connected to the cover plate body and extends along the thickness direction, and the first extension section abuts against the outer periphery of the first insulating part. The second extension section is disposed at the free end of the first extension section and extends toward the body portion, and the second extension section abuts against one side of the second insulating portion along the thickness direction. The third extension is disposed at the free end of the second extension and extends toward the extension portion, and the third extension abuts against the side of the second insulating portion toward the body portion.
5. The battery cover according to claim 4, characterized in that, The free end of the third extension is spaced apart from the extension portion.
6. The battery cover according to claim 4, characterized in that, A seal is provided between the third extension section and the main body.
7. The battery cover according to claim 6, characterized in that, The thickness of the seal is d and satisfies: 0.7mm≤d.
8. The battery cover according to claim 1, characterized in that, A second insulating element is provided between the inner wall of the mounting hole and the pole post.
9. The battery cover according to claim 8, characterized in that, The inner wall of the mounting hole has a stepped surface, and the second insulating element includes: The first segment is located between the stepped surface and the pole post; The second segment is connected to the first segment and is disposed between the inner wall of the mounting hole and the pole post.
10. A battery, characterized in that, Includes the battery cover as described in any one of claims 1-9.