A battery cover plate

Abstract

This utility model discloses a battery cover, which includes a cover body and a first terminal post. The cover body has a first mounting hole for mounting the first terminal post. A first mounting ring protruding from the upper end face of the cover body and surrounding the first mounting hole is formed. The battery cover also includes a first mounting sleeve installed between the first terminal post and the first mounting ring. The first mounting sleeve has a first mounting groove that matches the first mounting ring and is annular in shape. The first mounting sleeve is fixedly fitted onto the first mounting ring, and the first mounting ring is located within the first mounting groove. The first terminal post is fixedly inserted into the first mounting sleeve. The first mounting sleeve enables rapid fixed installation of the first terminal post and the cover body, reducing production and assembly steps, and ensuring the sealing performance between the first terminal post and the cover body.

Description

Technical Field

[0001] This utility model relates to the field of new energy batteries, and in particular to a battery cover. Background Technology

[0002] Existing battery covers consist of a cover body, terminals, and a sealing mounting assembly connecting the cover and terminals. The existing sealing mounting assembly structure includes welding rings, insulating rings, sealing rings, etc., and the sealing mounting assembly structure is simple and achieves fixation by the extrusion force between the terminals and the through holes formed on the cover body. This fixing method is not only cumbersome to install, but also has poor sealing effect. Summary of the Invention

[0003] The purpose of this invention is to provide a battery cover that is easy to install and has a good sealing effect.

[0004] To achieve the above objectives, the technical solution adopted by this utility model is as follows: a battery cover plate, comprising a cover body and a first terminal post, wherein a first mounting hole for mounting the first terminal post is formed on the cover body; a first mounting ring protruding from the upper end surface of the cover body and surrounding the first mounting hole is formed; the battery cover plate further comprises a first mounting sleeve installed between the first terminal post and the first mounting ring; a first mounting groove in the first mounting sleeve that matches the first mounting ring and is annular is formed on the first mounting sleeve; the first mounting sleeve is fixedly sleeved on the first mounting ring and the first mounting ring is located in the first mounting groove; and the first terminal post is fixedly inserted into the first mounting sleeve.

[0005] In another embodiment, the diameter of the upper end of the first mounting ring gradually increases from top to bottom, forming a frustum-shaped outer contour, and the diameter of the first mounting groove gradually increases from top to bottom; the first mounting groove, which is thicker at the top and bottom, enables the first mounting sleeve to be more firmly connected to the first mounting ring.

[0006] In another embodiment, an annular first support ring is formed on the sidewall of the first mounting hole. A first receiving space, which is narrower at the top and wider at the bottom, is formed between the upper end face of the first support ring and the inner sidewall of the first mounting ring. A first convex ring, which is shaped like a frustum and matches the first receiving space, is formed on the outer peripheral surface of the first pole post. The first convex ring presses the portion of the first mounting sleeve located inside the first mounting ring into the first receiving space formed by the inner sidewall of the first mounting ring and the upper end face of the first support ring, so that the first mounting sleeve and the first mounting ring are more tightly connected.

[0007] In another embodiment, the lower end face of the first convex ring is at least partially located on the upper end face of the first support ring. The battery cover also includes a first sealing ring that is sealed between the lower end face of the first convex ring and the upper end face of the first support ring, and between the circumferential surface of the lower end of the first electrode post and the inner surface of the first support ring. The first mounting sleeve will also press down on the first convex ring on the first electrode post, causing the sealing ring to be deformed. After assembly, the compression of the first sealing ring can be maintained between 30% and 40%, further improving the sealing performance between the first electrode post and the cover body.

[0008] In another embodiment, the battery cover further includes a second terminal and a second mounting sleeve. A second mounting hole for mounting the second terminal is formed on the cover body. A second mounting ring protruding from the upper end surface of the cover body and surrounding the second mounting hole is formed. The second mounting sleeve is installed between the second terminal and the second mounting ring. A second mounting groove matching the second mounting ring and in an annular shape is formed on the second mounting sleeve. The second mounting sleeve is fixedly fitted onto the second mounting ring, and the second mounting ring is located within the second mounting groove. The second terminal is fixedly inserted into the second mounting sleeve. The second mounting sleeve enables quick fixed installation of the second terminal and the cover body, reducing production and assembly steps, and ensuring the sealing performance between the second terminal and the cover body.

[0009] In another embodiment, the diameter of the upper end of the second mounting ring gradually increases from top to bottom, forming a frustum-shaped outer contour, and the diameter of the second mounting groove gradually increases from top to bottom; the second mounting groove, which is thicker at the top and bottom, enables the second mounting sleeve to be more firmly connected to the second mounting ring.

[0010] In another embodiment, an annular second support ring is formed on the sidewall of the second mounting hole. A second receiving space, which is narrower at the top and wider at the bottom, is formed between the upper end face of the second support ring and the inner sidewall of the second mounting ring. A second convex ring, which is shaped like a frustum and matches the second receiving space, is formed on the outer peripheral surface of the second pole post. The second convex ring presses the portion of the second mounting sleeve located inside the second mounting ring into the second receiving space formed by the inner sidewall of the second mounting ring and the upper end face of the second support ring, so that the second mounting sleeve and the second mounting ring are connected more tightly.

[0011] In another embodiment, the lower end face of the second convex ring is at least partially located on the upper end face of the second support ring. The battery cover also includes a second sealing ring that is sealed between the lower end face of the second convex ring and the upper end face of the second support ring, and between the circumferential surface of the lower end of the second pole post and the inner surface of the second support ring. The second mounting sleeve will also press down on the second convex ring on the second pole post, causing the sealing ring to be deformed. After assembly, the compression of the second sealing ring can be maintained between 30% and 40%, further improving the sealing performance between the second pole post and the cover body.

[0012] In another embodiment, the second pole is formed by stamping a copper-aluminum composite plate; no machining process is required, saving costs and improving process stability.

[0013] In another embodiment, the cover body includes a lower plastic plate and a light aluminum sheet located above it; the upper surface of the lower plastic plate is provided with a plurality of hot melt points, and the lower end surface of the light aluminum sheet is provided with undercut grooves at positions corresponding to the hot melt points. After the two are assembled, the light aluminum sheet and the lower plastic plate are joined together by ultrasonic hot melting.

[0014] Due to the application of the above technical solution, this utility model has the following advantages compared with the prior art: the first mounting sleeve realizes the quick fixed installation of the first pole post and the cover body, reduces the production and assembly process, and can ensure the sealing performance between the first pole post and the cover body. Attached Figure Description

[0015] Figure 1 This is a perspective view of the present utility model;

[0016] Figure 2 This is an exploded view of the present invention;

[0017] Figure 3 This is the front view of the present utility model;

[0018] Figure 4 This is a top view of the present invention;

[0019] Figure 5 for Figure 4 Sectional view AA;

[0020] Figure 6 for Figure 5 A magnified view of point B in the middle. Detailed Implementation

[0021] The present invention will be further described below with reference to the embodiments shown in the accompanying drawings.

[0022] See Figure 1-2As shown, the battery cover includes a cover body 1, a first terminal post 2, a second terminal post 3, a first mounting sleeve 4, a second mounting sleeve 5, a first sealing ring 6, a second sealing ring 7, a first mounting ring 11, a second mounting ring 12, a first mounting hole 8 for mounting the first terminal post 2, a second mounting hole 9 for mounting the second terminal post 3, an explosion-proof valve 19 and an explosion-proof valve protection plate 20 disposed on the cover body 1; the first mounting ring 11 is located on the upper end surface of the cover body 1 around the first mounting hole 8 and protrudes from the upper end surface of the cover body 1, and the second mounting ring 12 is located on the upper end surface of the cover body 1 around the second mounting hole 9 and protrudes from the upper end surface of the cover body 1. The cover body 1 includes a lower plastic plate 21 and a light aluminum sheet 22 located above it; the upper end surface of the lower plastic plate 21 is provided with multiple hot-melt points, and the lower end surface of the light aluminum sheet 22 is provided with undercut grooves at positions corresponding to the hot-melt points. After assembly, the light aluminum sheet and the lower plastic plate are joined together by ultrasonic hot-melt method.

[0023] See Figure 3-5 As shown, the first mounting sleeve 4 is installed between the first pole post 2 and the first mounting ring 11. The first mounting sleeve 4 has a first mounting groove 13 that matches the first mounting ring 11 and is in an annular shape. The first mounting sleeve 4 is fixedly sleeved on the first mounting ring 11 and the first mounting ring 11 is located in the first mounting groove 13. The first pole post 2 is fixedly inserted into the first mounting sleeve 4. The first mounting sleeve 4 enables the quick fixed installation of the first pole post 2 and the cover body 1, reduces the production assembly process, and ensures the sealing performance between the first pole post 2 and the cover body 1. The diameter of the upper end of the first mounting ring 11 gradually increases from top to bottom, making its outer contour form a frustum shape. The diameter of the first mounting groove 13 gradually increases from top to bottom. The first mounting groove 13, which is thicker at the top and bottom, enables the first mounting sleeve 4 to be more firmly connected to the first mounting ring 11. A first annular support ring 15 is formed on the side wall of the first mounting hole 8. A first receiving space D, which is narrower at the top and wider at the bottom, is formed between the upper end face of the first support ring 15 and the inner side wall of the first mounting ring 11. A first convex ring 17, which is shaped like a frustum and matches the receiving space, is formed on the outer peripheral surface of the first pole post 2. The first convex ring 17 will press the part of the first mounting sleeve 4 located inside the first mounting ring 11 into the first receiving space D formed by the inner side wall of the first mounting ring 11 and the upper end face of the first support ring 15, so that the first mounting sleeve 4 is more tightly connected to the first mounting ring 11. The lower end face of the first convex ring 17 is at least partially located on the upper end face of the first support ring 15. The first sealing ring 6 is sealed and fitted between the lower end face of the first convex ring 17 and the upper end face of the first support ring 15, and between the lower end circumferential surface of the first pole post 2 and the inner surface of the first support ring 15. The first mounting sleeve 4 will also press down on the first convex ring 17 on the first pole post 2, causing the sealing ring to be compressed and deformed. After assembly, the compression of the first sealing ring 6 can be maintained between 30% and 40%, further improving the sealing performance between the first pole post 2 and the cover body 1.

[0024] See Figure 3-6 As shown, the second mounting sleeve 5 is installed between the second pole post 3 and the second mounting ring 12. The second mounting sleeve 5 has a second mounting groove 14 that matches the second mounting ring 12 and is in an annular shape. The second mounting sleeve 5 is fixedly fitted onto the second mounting ring 12, and the second mounting ring 12 is located in the second mounting groove 14. The second pole post 3 is fixedly inserted into the second mounting sleeve 5. The second mounting sleeve 5 enables the quick fixed installation of the second pole post 3 and the cover body 1, reduces the production assembly process, and ensures the sealing performance between the second pole post 3 and the cover body 1. The diameter of the upper end of the second mounting ring 12 gradually increases from top to bottom, making its outer contour form a frustum shape. The diameter of the second mounting groove 14 gradually increases from top to bottom. The second mounting groove 14, which is thicker at the top and bottom, enables the second mounting sleeve 5 to be more firmly connected to the second mounting ring 12. A second annular support ring 16 is formed on the side wall forming the second mounting hole 9. A second receiving space E, which is narrower at the top and wider at the bottom, is formed between the upper end face of the second support ring 16 and the inner side wall of the second mounting ring 12. A second convex ring 18, which is shaped like a frustum and matches the receiving space, is formed on the outer peripheral surface of the second pole post 3. The second convex ring 18 will press the part of the second mounting sleeve 5 located inside the second mounting ring 12 into the second receiving space E formed by the inner side wall of the second mounting ring 12 and the upper end face of the second support ring 16, so that the second mounting sleeve 5 and the second mounting ring 12 are more tightly connected. The lower end face of the second convex ring 18 is at least partially located on the upper end face of the second support ring 16. The second sealing ring 7 is sealed and fitted between the lower end face of the second convex ring 18 and the upper end face of the second support ring 16, and between the lower end circumferential surface of the second pole post 3 and the inner surface of the second support ring 16. The second mounting sleeve 5 also presses the second convex ring 18 on the second pole post 3 downwards, causing the sealing ring to be deformed. After assembly, the compression of the second sealing ring 7 can be maintained between 30% and 40%, further improving the sealing performance between the second pole post 3 and the cover body 1. The second pole post 3 is formed by stamping copper-aluminum composite plate; no machining process is required, saving costs and improving process stability. The first pole post 2 is the positive pole post, and the second pole post 3 is the negative pole post.

[0025] The above embodiments are only for illustrating the technical concept and features of this utility model, and are intended to enable those skilled in the art to understand the content of this utility model and implement it accordingly. They should not be construed as limiting the scope of protection of this utility model. All equivalent changes or modifications made in accordance with the spirit and essence of this utility model should be included within the scope of protection of this utility model.

Claims

1. A battery cover, comprising a cover body and a first terminal post, wherein the cover body has a first mounting hole for mounting the first terminal post; characterized in that: A first mounting ring protruding from the upper end surface is formed on the upper end surface of the cover body and around the first mounting hole. The battery cover also includes a first mounting sleeve installed between the first terminal post and the first mounting ring. A first mounting groove in the first mounting sleeve is formed on the first mounting ring and is in the shape of an annular groove. The first mounting sleeve is fixedly sleeved on the first mounting ring and the first mounting ring is located in the first mounting groove. The first terminal post is fixedly inserted into the first mounting sleeve.

2. The battery cover according to claim 1, characterized in that: The diameter of the upper end of the first mounting ring gradually increases from top to bottom, forming a frustum-shaped outer contour, and the diameter of the first mounting groove gradually increases from top to bottom.

3. The battery cover according to claim 2, characterized in that: A first annular support ring is formed on the sidewall of the first mounting hole. A first receiving space that is narrower at the top and wider at the bottom is formed between the upper end face of the first support ring and the inner sidewall of the first mounting ring. A first convex ring that matches the first receiving space and is truncated cone-shaped is formed on the outer peripheral surface of the first pole post.

4. The battery cover according to claim 3, characterized in that: The lower end face of the first convex ring is at least partially located on the upper end face of the first support ring. The battery cover also includes a first sealing ring that is sealed between the lower end face of the first convex ring and the upper end face of the first support ring, and between the circumferential surface of the lower end of the first pole post and the inner surface of the first support ring.

5. The battery cover according to claim 1, characterized in that: The battery cover also includes a second terminal post and a second mounting sleeve. A second mounting hole for mounting the second terminal post is formed on the cover body. A second mounting ring protruding from the upper end surface of the cover body and surrounding the second mounting hole is formed. The second mounting sleeve is installed between the second terminal post and the second mounting ring. A second mounting groove matching the second mounting ring and in an annular shape is formed on the second mounting sleeve. The second mounting sleeve is fixedly sleeved on the second mounting ring and the second mounting ring is located in the second mounting groove. The second terminal post is fixedly inserted into the second mounting sleeve.

6. The battery cover according to claim 5, characterized in that: The diameter of the upper end of the second mounting ring gradually increases from top to bottom, forming a frustum-shaped outer contour, and the diameter of the second mounting groove gradually increases from top to bottom.

7. The battery cover according to claim 6, characterized in that: A second annular support ring is formed on the side wall forming the second mounting hole. A second receiving space with a narrower upper surface and a wider lower surface is formed between the upper end face of the second support ring and the inner side wall of the second mounting ring. A second convex ring in the shape of a frustum is formed on the outer peripheral surface of the second pole post to match the second receiving space.

8. The battery cover according to claim 7, characterized in that: The lower end face of the second convex ring is at least partially located on the upper end face of the second support ring. The battery cover also includes a second sealing ring that is sealed between the lower end face of the second convex ring and the upper end face of the second support ring, and between the circumferential surface of the lower end of the second pole post and the inner surface of the second support ring.

9. The battery cover according to claim 5, characterized in that: The second pole is formed by stamping a copper-aluminum composite plate.

10. The battery cover according to claim 1, characterized in that: The cover body includes a lower plastic sheet and an upper aluminum sheet.

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