Battery cover plate assembly and battery
Patent Information
- Application Number
- CN202522235531.5
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2025-10-22
- Publication Date
- 2026-09-04
- Estimated Expiration
- 2035-10-22
AI Technical Summary
[0003]本申请的目的在于提供一种电池盖板组件及电池，在一定程度上解决了现有技术中存在的在电池盖板的极柱组件中，焊接铝环与铝板的焊接位置易出现漏液的问题，而且在注塑成型上塑胶的过程中，上塑胶与焊接铝环的结合强度不够或者使用过程结合强度发生衰弱则会出现漏液现象的技术问题
本申请中重新设计了极柱的配合结构，在支撑环和盖板的安装通孔之间设置止动部和止动槽，使得支撑环与盖板连接得更牢固、更稳定，极大地提升了两者的结合强度，从而不会发生结合强度发生衰弱而出现漏液的问题发生，此外，在支撑环和绝缘环之间设置第一配合凸起部和第一配合凹槽，使得支撑环和绝缘环连接得更牢固、更稳定，极大地提升了两者的结合强度，减小焊接失效发生的风险，进而有助于减少漏液问题的发生。此外，在支撑环与盖板的下表面进行焊接时，若出现轻微气孔、夹渣，形成不了焊接密封，那么此时所设的第一密封圈可保证其气密性。
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Figure CN224720956U_ABST
Abstract
Description
Technical Field
[0001] This application relates to the field of battery technology, and in particular to a battery cover assembly and a battery. Background Technology
[0002] Currently, battery cover plates include structures such as aluminum cover plates, terminals, welded aluminum rings, and top plastic. The terminals and welded aluminum rings are installed in the mounting holes of the aluminum cover plate, with the welded aluminum rings surrounding the outer periphery of the terminals. The top plastic is injection molded onto the outer periphery of the terminals, connecting the terminals and the welded aluminum rings together. However, this structure has certain risks in terms of mechanical performance and airtightness. For example, if the welding fails after the welded aluminum rings are welded to the aluminum plate, leakage will occur. On the other hand, if the bonding strength between the top plastic and the welded aluminum rings is insufficient during injection molding or if the bonding strength weakens during use, leakage will also occur. Utility Model Content
[0003] The purpose of this application is to provide a battery cover assembly and a battery, which to a certain extent solves the problem in the prior art that leakage easily occurs at the welding position of the welded aluminum ring and the aluminum plate in the terminal assembly of the battery cover, and that leakage occurs when the bonding strength between the plastic and the welded aluminum ring is insufficient or weakens during use.
[0004] This application provides a battery cover assembly, including: a cover plate, a support ring, an insulating ring, and a terminal post; wherein, the cover plate has a mounting through hole arranged along a first preset direction, and the terminal post and the support ring are installed in the mounting through hole, and the support ring is arranged around the outer periphery of the terminal post, and the support ring is connected to the cover plate by welding; the insulating ring is injection molded on the outside of the terminal post and the support ring, so that the terminal post, the support ring, the cover plate, and the insulating ring are assembled and connected together; One of the sidewalls of the mounting through hole and the outer wall of the support ring has a stop portion, and the other has a stop groove, with the stop portion disposed within the stop groove; one of the support ring and the insulating ring has a first mating protrusion, and the other has a first mating groove, with the first mating protrusion disposed within the first mating groove.
[0005] In the above technical solution, the support ring further includes a first ring portion and a second ring portion connected to each other, and along the first preset direction, the second ring portion is disposed outside the first ring portion; the second ring portion is disposed inside the insulating ring.
[0006] In any of the above technical solutions, a mounting groove is further formed on a portion of the first ring away from the pole post, which is arranged along the first preset direction. The battery cover assembly also includes a first sealing ring, which is disposed in the mounting groove and is compressed between the first ring and the cover along the first preset direction.
[0007] In any of the above technical solutions, the support ring further includes a third ring portion, which is disposed on the side of the second ring portion near the pole post, and the third ring portion is connected to the second ring portion.
[0008] In any of the above technical solutions, the support ring further includes a fourth ring portion, which is disposed on the side of the second ring portion away from the pole post, and the fourth ring portion is connected to the first ring portion and the second ring portion, and the fourth ring portion protrudes from the first ring portion along the first preset direction; the first mating protrusion or the first mating groove is formed in the fourth ring portion.
[0009] In any of the above technical solutions, the inner surface of the first ring portion along the first preset direction is flush with the inner surface of the cover plate.
[0010] In any of the above technical solutions, one of the support ring and the insulating ring is provided with a second mating protrusion, and the other is provided with a second mating hole, and the second mating protrusion is disposed in the second mating hole; The first mating protrusion and the first mating groove are arranged along the first preset direction, and the second mating protrusion and the second mating hole are arranged along a direction perpendicular to the first preset direction.
[0011] In any of the above technical solutions, the battery cover assembly further includes a second sealing ring, the second sealing ring having an auxiliary mounting groove, the pole being mounted in the auxiliary mounting groove, and along the first preset direction, the second sealing ring is compressed between the insulating ring wrapped around a portion of the support ring and the portion of the support ring exposed outside the insulating ring.
[0012] In any of the above technical solutions, one of the second sealing ring and the support ring is formed with a third mating protrusion, and the other is formed with a third mating groove, and the third mating protrusion is disposed in the third mating groove.
[0013] In any of the above technical solutions, the outer side of the cover plate is further provided with a reinforcing protrusion surrounding the outer periphery of the mounting through hole, and the reinforcing protrusion abuts against and surrounds the outer periphery of the insulating ring.
[0014] In any of the above technical solutions, the number of stop grooves is multiple, and they are evenly spaced around the outer periphery of the pole post; the number of stop parts can also be multiple, and they correspond one-to-one with the multiple stop grooves.
[0015] In any of the above technical solutions, the number of the first mating protrusions is multiple, and they are evenly spaced around the outer periphery of the pole post; the number of the first mating grooves is also multiple, and they correspond one-to-one with the multiple stop grooves.
[0016] In any of the above technical solutions, the support ring is further described as an integral structure.
[0017] In any of the above technical solutions, the support ring and the cover plate are further connected by welding.
[0018] This application also provides a battery, including a casing, an electrode assembly, and a battery cover assembly as described in any of the above-described technical solutions, wherein the electrode assembly is installed inside the casing, and the battery cover assembly seals the opening end of the casing. Therefore, it possesses all the beneficial technical effects of this battery cover assembly, which will not be elaborated further here.
[0019] Compared with the prior art, the beneficial effects of this application are as follows: This application redesigns the mating structure of the pole, incorporating a stop and a stop groove between the mounting holes of the support ring and the cover plate. This makes the connection between the support ring and the cover plate more secure and stable, significantly improving the bonding strength and preventing leakage due to weakened bonding. Furthermore, a first mating protrusion and a first mating groove are provided between the support ring and the insulating ring, further strengthening the connection and reducing the risk of welding failure, thus helping to minimize leakage. Additionally, if slight porosity or slag inclusions occur during welding of the support ring to the lower surface of the cover plate, preventing a weld seal, the first sealing ring ensures airtightness. Attached Figure Description To more clearly illustrate the technical solutions in the specific embodiments of this application or the prior art, the drawings used in the description of the specific embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are some embodiments of this application. For those skilled in the art, other drawings can be obtained from these drawings without creative effort.
[0020] Figure 1 An exploded view of the battery cover assembly provided in an embodiment of this application; Figure 2 This is an assembly diagram of the battery cover assembly provided in an embodiment of this application; Figure 3 Another assembly diagram of the battery cover assembly provided in the embodiments of this application; Figure 4 for Figure 3 A sectional view along section AA; Figure 5 for Figure 4 A magnified structural diagram at point B; Figure 6 A partial cross-sectional view of the cover plate provided in an embodiment of this application; Figure 7 This is a schematic diagram of the support ring provided in an embodiment of this application; Figure 8 A cross-sectional view of the support ring provided in an embodiment of this application; Figure 9 Another cross-sectional view of the support ring provided in an embodiment of this application; Figure 10 This is a schematic diagram of the structure of the insulating ring provided in an embodiment of this application; Figure 11 This is a schematic diagram of the structure of the second sealing ring provided in an embodiment of this application; Figure 12 This is another structural schematic diagram of the second sealing ring provided in an embodiment of this application.
[0021] Figure label: 1-Cover plate, 101-Mounting through hole, 2-Support ring, 21-First ring, 211-Mounting groove, 22-Second ring, 23-Third ring, 24-Fourth ring, 3-Insulating ring, 4-Pole post, 5-Stop part, 6-Stop groove, 7-First mating protrusion, 8-First mating groove, 9-First sealing ring, 10-Second mating hole, 11-Second sealing ring, 12-Third mating protrusion, 13-Third mating groove, 14-Reinforcing protrusion, 15-Insulating component, a-First preset direction. Detailed Implementation
[0022] The technical solutions of this application will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are some embodiments of this application, but not all embodiments.
[0023] The components of the embodiments of this application described and shown in the accompanying drawings can be arranged and designed in a variety of different configurations. Therefore, the following detailed description of the embodiments of this application provided in the drawings is not intended to limit the scope of the claimed application, but merely to illustrate selected embodiments of the application.
[0024] Based on the embodiments in this application, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of this application.
[0025] In the description of this application, it should be noted that the terms "center," "upper," "lower," "left," "right," "vertical," "horizontal," "inner," and "outer," etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are used 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. Therefore, they should not be construed as limitations on this application. Furthermore, the terms "first," "second," and "third" are used for descriptive purposes only and should not be construed as indicating or implying relative importance.
[0026] In the description of this application, it should be noted that, unless otherwise expressly specified and limited, the terms "installation," "connection," and "linking" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; and they can refer to the internal connection between two components. Those skilled in the art can understand the specific meaning of the above terms in this application based on the specific circumstances.
[0027] The following reference Figures 1 to 12 This application describes a battery cover assembly and a battery according to some embodiments.
[0028] Example 1 See Figures 1 to 12 As shown, an embodiment of this application provides a battery cover assembly, including: a cover plate 1, a support ring 2, an insulating ring 3, and a terminal post 4; wherein, the cover plate 1 is formed with a mounting through hole 101 disposed along a first preset direction a, and the terminal post 4 and the support ring 2 are installed in the mounting through hole 101, and the support ring 2 is disposed around the outer periphery of the terminal post 4, and the support ring 2 is connected to the cover plate 1; the insulating ring 3 is injection molded on the outside of the terminal post 4 and the support ring 2, so that the terminal post 4, the support ring 2, the cover plate 1, and the insulating ring 3 are assembled and connected together; A stop portion 5 is formed on one of the side wall of the mounting through hole 101 and the outer wall of the support ring 2, and a stop groove 6 is formed on the other, with the stop portion 5 disposed in the stop groove 6; a first mating protrusion 7 is formed on one of the support ring 2 and the insulating ring 3, and a first mating groove 8 is formed on the other, with the first mating protrusion 7 disposed in the first mating groove 8.
[0029] As can be seen from the structure described above, the mating structure of the pole post 4 has been redesigned in this application. A stop part 5 and a stop groove 6 are provided between the mounting through hole 101 of the support ring 2 and the cover plate 1, making the connection between the support ring 2 and the cover plate 1 more firm and stable, greatly improving the bonding strength between the two, so that the problem of leakage due to weakening of the bonding strength will not occur. In addition, a first mating protrusion 7 and a first mating groove 8 are provided between the support ring 2 and the insulating ring 3, making the connection between the support ring 2 and the insulating ring 3 more firm and stable, greatly improving the bonding strength between the two, reducing the risk of welding failure, and thus helping to reduce the occurrence of leakage problems.
[0030] Furthermore, preferably, the first preset direction a is the thickness direction of the cover plate 1. Of course, it is not limited to this and can be selected according to actual needs.
[0031] Furthermore, preferably, the insulating ring 3 has a first mating protrusion 7 and the support ring 2 has a first mating groove 8. Of course, it is not limited to this. The support ring 2 may also have a first mating protrusion 7 and the insulating ring 3 may have a first mating groove 8. The specific choice depends on the actual needs.
[0032] Furthermore, preferably, the support ring 2 and the cover plate 1 are connected by welding. Of course, this is not the only option; other connection methods can be selected according to actual needs.
[0033] In this embodiment, preferably, as follows: Figure 5 , Figures 7 to 9 As shown, the support ring 2 includes a first ring portion 21 and a second ring portion 22 connected to each other, and along the first preset direction a, the second ring portion 22 is disposed on the outside of the first ring portion 21; the second ring portion 22 is disposed inside the insulating ring 3. As can be seen from the structure described above, the first ring 21 is located at the bottom of the insulating ring 3, serving to support and hold the insulating ring 3; the second ring 22 is located inside the insulating ring 3, serving as a support frame and providing support. Moreover, the second ring 22 and the insulating ring 3 form an interlocking structure, making the connection between the two more secure and stable.
[0034] In this embodiment, preferably, as follows: Figure 5 , Figures 7 to 9As shown, a mounting groove 211 is formed on a portion of the first ring portion 21 away from the terminal post 4, which is arranged along a first preset direction a. The battery cover assembly also includes a first sealing ring 9, which is disposed in the mounting groove 211 and is compressed between the first ring portion 21 and the cover plate 1 along the first preset direction a. As can be seen from the structure described above, if slight porosity or slag inclusions occur when welding the support ring 2 to the lower surface of the cover plate 1, and a weld seal cannot be formed, then the first sealing ring 9 can ensure its airtightness.
[0035] Furthermore, preferably, the material of the first sealing ring 9 is a high-molecular rubber material such as fluororubber or nitrile rubber. Of course, it is not limited to this and can be selected according to actual needs.
[0036] It should be noted that the first sealing ring 9 and the mounting groove 211 may not be provided; the choice depends on the actual needs. In this embodiment, preferably, as follows: Figure 5 , Figures 7 to 9 As shown, the support ring 2 includes a third ring portion 23, which is disposed on the side of the second ring portion 22 near the pole post 4, and the third ring portion 23 is connected to the second ring portion 22. As can be seen from the structure described above, the third ring 23 and the second ring 22 are connected and form an angle, so that the second ring 22 and the third ring 23 form an interlocking structure with the insulating ring 3 in two directions, which further improves the connection strength between the two, making the connection between the two more firm and stable, and less likely to fail due to insufficient bonding strength.
[0037] In this embodiment, preferably, as follows: Figure 5 , Figures 7 to 9 As shown, the support ring 2 includes a fourth ring portion 24, which is disposed on the side of the second ring portion 22 away from the pole post 4. The fourth ring portion 24 is connected to the first ring portion 21 and the second ring portion 22, and the fourth ring portion 24 protrudes from the first ring portion 21 along the first preset direction a. A first mating protrusion 7 or a first mating groove 8 is formed in the fourth ring portion 24. As can be seen from the structure described above, the fourth ring 24 is located above the first ring 21, increasing the thickness of this area. Consequently, the first mating groove 8 is opened on the fourth ring 24, which does not weaken the strength of this area and does not require increasing the overall thickness of the first ring 21. The fourth ring 24 and the first ring 21 form a stepped structure, which makes the mounting through hole 101 and the fourth part also stepped, making the support ring 2 fit more firmly and stably with the inner wall of the mounting through hole 101. Furthermore, preferably, the first ring portion 21, the second ring portion 22, the third ring portion 23 and the fourth ring portion 24 are an integral structure, that is, the support ring 2 is an integral structure with high overall strength, but of course, it is not limited to this.
[0038] It should be noted that the fourth ring 24 may not be provided. Instead, the first ring 21 may be thickened and the first mating groove 8 may be directly provided on the first ring 21. The specific choice depends on the actual needs.
[0039] In this embodiment, preferably, as follows: Figure 5 As shown, the inner surface of the first ring portion 21 along the first preset direction a is flush with the inner surface of the cover plate 1. Here, "inner" refers to the side closer to the pole group. As can be seen from the structure described above, the inner surface of the first ring 21 does not protrude from the inner surface of the cover plate 1, thus avoiding occupying the installation space of the electrode assembly and preventing damage to the electrode assembly. Of course, this is not the only limitation; the first ring 21 may not be flush with the inner surface of the cover plate 1, depending on the actual needs.
[0040] In this embodiment, preferably, as follows: Figure 7 As shown, one of the support ring 2 and the insulating ring 3 has a second mating protrusion, and the other has a second mating hole 10, with the second mating protrusion disposed within the second mating hole 10; The first mating protrusion 7 and the first mating groove 8 are arranged along the first preset direction a, and the second mating protrusion and the second mating hole 10 are arranged along a direction perpendicular to the first preset direction a. As can be seen from the structure described above, in addition to the first mating part and the second mating hole 10, the support ring 2 and the insulating ring 3 are also provided with a second mating protrusion and a second mating hole 10. The two sets of mating structures are arranged in different directions, one of which is arranged in the vertical direction and the other is arranged in the horizontal direction. This increases the connection strength between the support ring 2 and the insulating ring 3 from both directions, making the connection between the two more solid and stable, and less prone to failure.
[0041] Furthermore, preferably, the second mating protrusion is disposed on the insulating ring 3, and the second mating hole 10 is disposed on the second ring portion 22. Of course, it is not limited to this. The second mating protrusion can also be disposed on the second ring portion 22, and the second mating hole 10 can be disposed on the insulating ring 3. The specific choice depends on the actual needs.
[0042] It should be noted that the second mating protrusion and the second mating hole 10 may not be provided; the choice depends on the actual needs. In this embodiment, preferably, as follows: Figure 5 Figure 11 and Figure 12 As shown, the battery cover assembly also includes a second sealing ring 11, which has an auxiliary mounting groove. The terminal post 4 is installed in the auxiliary mounting groove and along the first preset direction a, the second sealing ring 11 is compressed between the insulating ring 3 that is wrapped around part of the support ring 2 and the part of the support ring 2 that is exposed outside the insulating ring 3. That is, the second sealing ring 11 is compressed between the insulating ring 3 that is wrapped around the third ring portion 23 and the structure of the first ring portion 21 located on the side of the second ring portion 22 near the terminal post 4. As can be seen from the structure described above, a second sealing ring 11 is provided around the outer periphery of the pole post 4, and the second sealing ring 11 is compressed between the support ring 2 and the insulating ring 3 along the second preset direction, which improves the sealing performance. Moreover, the second sealing ring 11 separates the support ring 2 and the pole post 4, thus playing a role in insulation protection. In this embodiment, preferably, as follows: Figure 5 , Figure 8 , Figure 9 and Figure 12 As shown, one of the second sealing ring 11 and the first ring portion 21 of the support ring 2 has a third mating protrusion 12, while the other has a third mating groove 13, and the third mating protrusion 12 is disposed in the third mating groove 13. As can be seen from the structure described above, a third mating protrusion 12 and a third mating groove 13 are provided between the second sealing ring 11 and the first ring portion 21 of the support ring 2, so that the two form an interlocking structure, making the two fit more firmly and stably, and also helping to improve the air seal.
[0043] In this embodiment, preferably, as follows: Figure 1 and Figure 5 As shown, a reinforcing protrusion 14 is formed on the outer side of the cover plate 1, surrounding the outer periphery of the mounting through hole 101. The reinforcing protrusion 14 abuts against and surrounds the outer periphery of the insulating ring 3. The reinforcing protrusion 14 increases the strength of the area of the mounting through hole 101, preventing deformation and failure. Moreover, the reinforcing protrusion 14 is located on the outer side of the insulating component, thereby reinforcing the aforementioned components. It should be noted that the aforementioned reinforcing protrusion 14 may be omitted, depending on actual needs. In this embodiment, preferably, as follows: Figure 6 As shown, there are multiple stop grooves 6, which are evenly spaced around the outer periphery of the pole post 4; there are also multiple stop parts 5, which correspond one-to-one with the multiple stop grooves 6. As can be seen from the structure described above, this application provides multiple evenly distributed stop grooves 6, which, together with evenly distributed stop parts 5, make the circumferential area of the support ring 2 fit more firmly and stably with the circumferential area of the mounting through hole 101. Of course, it is not limited to this; only stop grooves 6 and one stop part 5 may be provided, depending on the specific needs. In this embodiment, preferably, as follows: Figure 7 As shown, there are multiple first mating protrusions 7, which are evenly spaced around the outer periphery of the pole post 4; there are also multiple first mating grooves 8, which correspond one-to-one with multiple stop grooves 6. As can be seen from the structure described above, this application provides multiple evenly distributed first mating protrusions 7 and first mating grooves 8, making the circumferential area of the support ring 2 and the circumferential area of the insulating ring 3 fit more firmly and stably. Of course, it is not limited to this; only one first mating protrusion 7 and one first mating groove 8 may be provided, depending on the specific needs.
[0044] It should be noted that the battery cover assembly also includes an insulating component 15, i.e., a lower plastic, which is installed on the inner side of the cover 1 near the electrode group to provide insulation and protection. It also has holes corresponding to the aforementioned mounting through holes 101. This part is an existing structure and will not be described in detail here. Example 2 Embodiment 2 of this application also provides a battery, including a casing, an electrode assembly, and the battery cover assembly described in Embodiment 1 above, wherein the electrode assembly is installed inside the casing, and the battery cover assembly covers the opening end of the casing. Therefore, it possesses all the beneficial technical effects of this battery cover assembly, and the same technical features and beneficial effects will not be repeated here.
[0045] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of this application, and are not intended to limit them. Although this application has been described in detail with reference to the foregoing embodiments, those skilled in the art should understand that modifications can still be made to the technical solutions described in the foregoing embodiments, or equivalent substitutions can be made to some or all of the technical features therein. Such modifications or substitutions do not cause the essence of the corresponding technical solutions to deviate from the scope of the technical solutions of the embodiments of this application.
Claims
1. A battery cover assembly, characterized in that, include: The device comprises a cover plate, a support ring, an insulating ring, and a pole post; wherein the cover plate has a mounting through hole arranged along a first preset direction, and the pole post and the support ring are installed in the mounting through hole, and the support ring is arranged around the outer periphery of the pole post and is connected to the cover plate; the insulating ring is injection molded on the outside of the pole post and the support ring, so that the pole post, the support ring, the cover plate, and the insulating ring are assembled and connected together; One of the sidewalls of the mounting through hole and the outer wall of the support ring has a stop portion, and the other has a stop groove, with the stop portion disposed within the stop groove; one of the support ring and the insulating ring has a first mating protrusion, and the other has a first mating groove, with the first mating protrusion disposed within the first mating groove.
2. The battery cover assembly according to claim 1, characterized in that, The support ring includes a first ring portion and a second ring portion connected to each other, and along the first preset direction, the second ring portion is disposed outside the first ring portion; the second ring portion is disposed inside the insulating ring.
3. The battery cover assembly according to claim 2, characterized in that, A mounting groove is formed on a portion of the first ring portion away from the terminal post, which is arranged along the first preset direction. The battery cover assembly also includes a first sealing ring, which is disposed in the mounting groove and is compressed between the first ring portion and the cover plate along the first preset direction.
4. The battery cover assembly according to claim 2, characterized in that, The support ring includes a third ring portion, which is disposed on the side of the second ring portion near the pole post, and the third ring portion is connected to the second ring portion.
5. The battery cover assembly according to claim 2, characterized in that, The support ring includes a fourth ring portion, which is disposed on the side of the second ring portion away from the pole post. The fourth ring portion is connected to both the first ring portion and the second ring portion, and protrudes from the first ring portion along a first preset direction. A first mating protrusion or a first mating groove is formed in the fourth ring portion; and / or The inner surface of the first ring along the first preset direction is flush with the inner surface of the cover plate.
6. The battery cover assembly according to claim 1, characterized in that, One of the support ring and the insulating ring has a second mating protrusion, and the other has a second mating hole, with the second mating protrusion disposed in the second mating hole; The first mating protrusion and the first mating groove are arranged along the first preset direction, and the second mating protrusion and the second mating hole are arranged along a direction perpendicular to the first preset direction.
7. The battery cover assembly according to claim 1, characterized in that, The battery cover assembly further includes a second sealing ring, which forms an auxiliary mounting groove. The terminal post is installed in the auxiliary mounting groove, and along the first preset direction, the second sealing ring is compressed between the insulating ring that wraps around a portion of the support ring and the portion of the support ring that is exposed outside the insulating ring.
8. The battery cover assembly according to claim 7, characterized in that, One of the second sealing ring and the support ring has a third mating protrusion, and the other has a third mating groove, with the third mating protrusion disposed within the third mating groove.
9. The battery cover assembly according to any one of claims 1 to 8, characterized in that, The outer side of the cover plate has a reinforcing protrusion surrounding the outer periphery of the mounting through hole, and the reinforcing protrusion abuts against and surrounds the outer periphery of the insulating ring; and / or The number of stop grooves is multiple, and they are evenly spaced around the outer periphery of the pole post; the number of stop parts can also be multiple, and they correspond one-to-one with the multiple stop grooves; and / or The number of the first mating protrusions is multiple, and they are evenly spaced around the outer periphery of the pole post; the number of the first mating grooves is also multiple, and they correspond one-to-one with the multiple stop grooves; and / or The support ring is an integral structure; and / or The support ring and the cover plate are connected by welding.
10. A battery, characterized in that, It includes a housing, an electrode assembly, and a battery cover assembly as described in any one of claims 1 to 9; wherein the electrode assembly is installed inside the housing, and the battery cover assembly covers the opening of the housing.