Battery cover plate assembly and battery

Abstract

The utility model belongs to the technical field of batteries, and particularly discloses a battery cover plate assembly and a battery, the battery cover plate assembly comprises a polished aluminum sheet, a pole and an O-shaped sealing ring, the polished aluminum sheet is provided with a first mounting hole, the pole is arranged in the first mounting hole in a penetrating manner, and the peripheral side wall of the pole is provided with a mounting groove. The O-shaped sealing ring is arranged in the mounting groove in the pole in a sleeving manner, the inner side of the O-shaped sealing ring is propped against the bottom of the mounting groove, and the outer side of the O-shaped sealing ring is propped against the inner wall of the first mounting hole. Due to the fact that the cross section of the O-shaped sealing ring is round, when the pole and the O-shaped sealing ring are installed in the first installation hole together, twisting and flanging are not prone to occurring, the sealing performance between the pole and the smooth aluminum sheet after assembly is improved, the helium detection qualification rate of the battery cover plate assembly is high, one side of the O-shaped sealing ring is embedded in the installation groove in the pole, and the sealing performance of the battery cover plate assembly is improved. The relative position between the O-shaped sealing ring and the pole is accurate, and the installation is fast and convenient.

Description

Technical Field

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

[0002] The battery cover assembly is a crucial component of power batteries and plays a crucial role in them. It typically consists of a plain aluminum sheet, an upper plastic component, a lower plastic component, a terminal, and a seal. The upper and lower plastic components are placed on either side of the plain aluminum sheet, while the terminal is inserted through the lower plastic component, the plain aluminum sheet, and the upper plastic component, respectively. The seal fits over the terminal and is sandwiched between the terminal and the plain aluminum sheet, sealing the battery cover assembly.

[0003] However, existing seals typically have a rectangular cross-section, which can easily twist and flanging during assembly, as well as the risk of the seal not being properly installed. This results in poor sealing performance in the battery cover assembly, a high failure rate in helium inspection, and low assembly efficiency. Furthermore, rectangular seals are not universally compatible with different terminal sizes, often requiring re-molding and procurement, which is costly. Utility Model Content

[0004] The purpose of the utility model is to provide a battery cover assembly and a battery, which uses an O-ring to seal the gap between the pole and the bare aluminum sheet, is easy to install and accurately positioned, is not prone to flanging and improper installation, has good sealing performance, and is low in cost.

[0005] To achieve this purpose, the present invention adopts the following technical solutions:

[0006] In one aspect, the present invention provides a battery cover assembly, comprising:

[0007] The plain aluminum sheet is provided with a first mounting hole;

[0008] A pole, passing through the first mounting hole, wherein a mounting groove is provided on a peripheral side wall of the pole, and the mounting groove is located in the first mounting hole;

[0009] The O-shaped sealing ring is sleeved on the pole, and the inner side of the O-shaped sealing ring abuts against the bottom of the mounting groove, and the outer side of the O-shaped sealing ring abuts against the inner wall of the first mounting hole.

[0010] Optionally, the battery cover assembly further includes an upper plastic part, a lower plastic part and a rivet block, and one end of the pole passes through the lower plastic part, the first mounting hole, the upper plastic part and the rivet block, and is riveted to the rivet block.

[0011] Optionally, the pole includes a first connecting portion, a column portion, and a second connecting portion connected in sequence, the second connecting portion is passed through the rivet block and riveted to the rivet block, the column portion is passed through the lower plastic part, the first mounting hole and the upper plastic part, and the mounting groove is arranged on the peripheral side wall of the column portion.

[0012] Optionally, the second connecting portion is riveted to form a limiting protrusion, and the limiting protrusion presses the riveted block against the upper plastic part, and the upper plastic part presses the plain aluminum sheet.

[0013] Optionally, the first connecting portion is a square plate, and the square plate presses the lower plastic part against the plain aluminum sheet.

[0014] Optionally, one of the upper plastic part and the riveting block is provided with a first limiting portion, and the other of the upper plastic part and the riveting block is provided with a first limiting groove, and the first limiting portion can be inserted into the first limiting groove.

[0015] Optionally, a plurality of the first limiting portions and the first limiting grooves are provided, and the first limiting portions correspond to the first limiting grooves one by one.

[0016] Optionally, one of the upper plastic part and the smooth aluminum sheet is provided with a second limiting portion, and the other of the upper plastic part and the smooth aluminum sheet is provided with a second limiting groove, and the second limiting portion can be inserted into the second limiting groove.

[0017] Optionally, a plurality of the second limiting portions and the second limiting grooves are provided, and the second limiting portions correspond to the second limiting grooves one-to-one.

[0018] On the other hand, the present invention provides a battery, comprising the battery cover assembly in any of the above solutions.

[0019] The beneficial effects of the utility model are:

[0020] The utility model provides a battery cover assembly, including a plain aluminum sheet, a pole and an O-ring, wherein a first mounting hole is provided on the plain aluminum sheet, the pole is inserted into the first mounting hole, and a mounting groove is provided on the peripheral side wall of the pole. The O-ring is sleeved in the mounting groove on the pole, the inner side of the O-ring abuts against the bottom of the mounting groove, and the outer side of the O-ring abuts against the inner wall of the first mounting hole. Since the cross section of the O-ring is circular, when the pole and the O-ring are installed into the first mounting hole together, twisting and flanging are not likely to occur, which helps to improve the sealing performance between the pole and the plain aluminum sheet after assembly. The helium inspection pass rate of the battery cover assembly is high, and one side of the O-ring is embedded in the mounting groove on the pole, which can ensure that the relative position between the O-ring and the pole is accurate, and the installation is quick and convenient. BRIEF DESCRIPTION OF THE DRAWINGS

[0021] Figure 1 It is an exploded view of the battery cover assembly provided in an embodiment of the present utility model;

[0022] Figure 2 This is an exploded view of the battery cover assembly provided in an embodiment of the present invention from another perspective;

[0023] Figure 3 1 is a top view of a battery cover assembly provided in an embodiment of the present utility model;

[0024] Figure 4 yes Figure 3 Cross-sectional view of the middle AA section;

[0025] Figure 5 yes Figure 3 Cross-sectional view of the middle BB section.

[0026] In the picture:

[0027] 100, plain aluminum sheet; 110, first mounting hole; 120, second limiting groove; 200, pole; 210, first connecting portion; 220, column portion; 221, mounting groove; 230, second connecting portion; 231, limiting protrusion; 300, O-ring; 400, upper plastic part; 410, second mounting hole; 420, first limiting portion; 430, second limiting portion; 500, lower plastic part; 510, third mounting hole; 600, rivet block; 610, fourth mounting hole; 611, sink; 620, first limiting groove. DETAILED DESCRIPTION

[0028] The present invention will be further described in detail below with reference to the accompanying drawings and examples. It should be understood that the specific embodiments described herein are intended only to illustrate the present invention and are not intended to limit the present invention. It should also be noted that, for ease of description, the accompanying drawings only illustrate portions relevant to the present invention, not all of its components.

[0029] In the description of this utility model, unless otherwise specified or limited, the terms "connected," "connect," and "fixed" should be understood in a broad sense. For example, they can refer to fixed connection, detachable connection, or integration; mechanical connection or electrical connection; direct connection or indirect connection through an intermediate medium; internal communication between two components or interaction between two components. Those skilled in the art will understand the specific meanings of the above terms in this utility model based on the specific circumstances.

[0030] In the present invention, unless otherwise expressly specified or limited, a first feature being "above" or "below" a second feature may include the first and second features being in direct contact, or may include the first and second features being in contact not directly but through another feature between them. Moreover, a first feature being "above," "above," and "above" a second feature may include the first feature being directly above or obliquely above the second feature, or may simply mean that the first feature is higher in level than the second feature. A first feature being "below," "below," and "below" a second feature may include the first feature being directly below or obliquely below the second feature, or may simply mean that the first feature is lower in level than the second feature.

[0031] In the description of this embodiment, terms such as "upper," "lower," "left," and "right" are used to refer to positions or locations based on the positions or locations shown in the accompanying drawings. These terms are intended solely to facilitate description and simplify operation, and are not intended to indicate or imply that the devices or components referred to must have, be constructed, or operate in a specific orientation. Therefore, they should not be construed as limitations on this invention. Furthermore, the terms "first" and "second" are used solely for descriptive purposes and have no special meaning.

[0032] like Figure 1-Figure 5 As shown, this embodiment provides a battery cover assembly, which includes a plain aluminum sheet 100, a pole 200 and an O-ring 300. The plain aluminum sheet 100 is provided with a first mounting hole 110, the pole 200 is inserted into the first mounting hole 110, and a mounting groove 221 is provided on the peripheral side wall of the pole 200.

[0033] When assembling the pole 200 with the bare aluminum sheet 100, the O-ring 300 is first placed within the mounting groove 221 on the pole 200. The pole 200 and the O-ring 300 are then inserted into the first mounting hole 110. The O-ring 300 is then compressed radially along the first mounting hole 110, with the inner side of the O-ring 300 abutting the bottom of the mounting groove 221 and the outer side of the O-ring 300 abutting the inner wall of the first mounting hole 110. The O-ring 300 thus seals the gap between the pole 200 and the inner wall of the first mounting hole 110 and insulates the pole 200 from the bare aluminum sheet 100.

[0034] Since the cross section of the O-ring 300 is circular, when the pole 200 and the O-ring 300 are installed together in the first mounting hole 110, twisting and flanging are not likely to occur, which helps to improve the sealing performance between the pole 200 and the bare aluminum sheet 100 after assembly. The helium inspection pass rate of the battery cover assembly is high. Moreover, since one side of the O-ring 300 is embedded in the mounting groove 221 on the pole 200, the relative position between the O-ring 300 and the pole 200 can be ensured to be accurate, and installation is quick and convenient. In addition, the O-ring 300 has a full range of sizes and specifications and is highly versatile. It can be well adapted to poles 200 and bare aluminum sheets 100 of various specifications, and can be processed and manufactured using molds of common specifications, with low mold opening costs.

[0035] Continue to see Figure 4 and Figure 5 Along the radial direction of the first mounting hole 110, in this embodiment, the outer side of the O-ring 300 and the mounting groove 221 form an outer diameter static seal, and the seal between the rectangular cross-section seal and the pole 200 is a flat static seal. When the O-ring 300 is compressed by 10%-15%, the sealing performance of the rectangular cross-section seal when the compression is greater than 35% can be achieved, meeting the helium inspection requirements. Because the compression of the O-ring 300 is small, the assembly between the pole 200 and the bare aluminum plate is easier, and the O-ring 300 is subjected to less force during the installation process, making it less likely to twist and flanging, thereby achieving a good sealing effect. By way of example, the compression of the O-ring 300 in this embodiment is 10%, 12%, 15%, etc., which are not listed here one by one.

[0036] Continue to see Figure 1 and Figure 2 The battery cover assembly also includes an upper plastic part 400, a lower plastic part 500 and a rivet block 600. The upper plastic part 400 is provided with a second mounting hole 410, the lower plastic part 500 is provided with a third mounting hole 510, and the rivet block 600 is provided with a fourth mounting hole 610. One end of the pole 200 passes through the third mounting hole 510 on the lower plastic part 500, the first mounting hole 110 on the bare aluminum sheet 100, the second mounting hole 410 on the upper plastic part 400 and the fourth mounting hole 610 on the rivet block 600 in sequence, and is then riveted to the rivet block 600. As a result, one end of the pole 200 presses the rivet block 600 and the upper plastic part 400 against one side of the bare aluminum sheet 100, and the other end of the pole 200 presses the lower plastic part 500 against the other side of the bare aluminum sheet 100. The upper plastic part 400 insulates the rivet block 600 from the bare aluminum sheet 100, and the lower plastic part 500 insulates the pole 200 from the bare aluminum sheet 100.

[0037] The pole 200 in this embodiment includes a first connecting portion 210, a column portion 220 and a second connecting portion 230 connected in sequence. The second connecting portion 230 passes through the fourth mounting hole 610 of the rivet block 600 and is riveted to the rivet block 600. The column portion 220 is sequentially passed through the third mounting hole 510 of the lower plastic part 500, the first mounting hole 110 of the bare aluminum sheet 100 and the second mounting hole 410 of the upper plastic part 400. The mounting groove 221 is provided on the peripheral side wall of the column portion 220, and the mounting groove 221 is directly opposite to the first mounting hole 110 on the bare aluminum sheet 100, so that the two sides of the O-ring 300 can be pressed against the bottom wall of the mounting groove 221 and the inner wall of the first mounting hole 110 respectively.

[0038] As an optional solution, a recessed platform 611 is provided on the inner wall of the fourth mounting hole 610 of the rivet block 600. After the second connecting portion 230 passes through the fourth mounting hole 610, a limiting protrusion 231 is formed by riveting. The limiting protrusion 231 abuts against the recessed platform 611. As a result, the limiting protrusion 231 can press the rivet block 600 against the upper plastic part 400, and the upper plastic part 400 can then press against one side of the bare aluminum sheet 100. Furthermore, the end of the pole 200 opposite the second connecting portion 230, that is, the first connecting portion 210, is a square plate. The square plate can be used to press the lower plastic part 500 against the other side of the bare aluminum sheet 100, so that the pole 200 can be fixedly mounted on the bare aluminum sheet 100 through the limiting protrusion 231 and the first connecting portion 210.

[0039] Furthermore, one of the upper plastic part 400 and the rivet block 600 is provided with a first limiting portion 420, and the other of the upper plastic part 400 and the rivet block 600 is provided with a first limiting groove 620. The first limiting portion 420 can be inserted into the first limiting groove 620, thereby ensuring accurate positioning between the upper plastic part 400 and the rivet block 600. One of the upper plastic part 400 and the plain aluminum sheet 100 is provided with a second limiting portion 430, and the other of the upper plastic part 400 and the plain aluminum sheet 100 is provided with a second limiting groove 120. The second limiting portion 430 can be inserted into the second limiting groove 120, thereby ensuring accurate positioning between the upper plastic part 400 and the plain aluminum sheet 100. The above arrangement helps to improve the assembly accuracy of the battery cover assembly, the battery cover assembly has good sealing performance, and a high helium inspection pass rate.

[0040] Furthermore, there can be multiple first limiting portions 420 and first limiting grooves 620, and there can be a one-to-one correspondence between the first limiting portions 420 and the first limiting grooves 620. There can also be multiple second limiting portions 430 and second limiting grooves 120, and there can be a one-to-one correspondence between the second limiting portions 430 and the second limiting grooves 120.

[0041] Continue to see 1- Figure 5In this embodiment, two first limiting grooves 620 are provided, and the two first limiting grooves 620 are arranged opposite to each other along the circumference of the rivet block 600. Two first limiting portions 420 are also provided. The two first limiting portions 420 are arranged on the side of the upper plastic part 400 away from the light aluminum sheet 100, and both are cylindrical structures. The two first limiting portions 420 can be inserted into one first limiting groove 620 respectively, so that the positioning between the rivet block 600 and the upper plastic part 400 is accurate.

[0042] Furthermore, two second limiting grooves 120 are provided. These two second limiting grooves 120 are located on the side of the smooth aluminum sheet 100 facing the upper plastic component 400, and the two second limiting grooves 120 are arranged oppositely in the circumferential direction of the first mounting hole 110. Two second limiting portions 430 are also provided. These two second limiting portions 430 are located on the side of the upper plastic component 400 near the smooth aluminum sheet 100. The second limiting portions 430 are also cylindrical in structure. The two second limiting portions 430 can be respectively inserted into one second limiting groove 120, thereby ensuring accurate positioning between the upper plastic component 400 and the smooth aluminum sheet 100.

[0043] It should be noted that in order to improve the uniformity of the force applied to the upper plastic part 400, the line connecting the two first limiting portions 420 on the upper plastic part 400 is perpendicular to the line connecting the two second limiting portions 430 on the upper plastic part 400, thereby making the force applied to the upper plastic part 400 in the circumferential direction more uniform and the assembly structure of the battery cover assembly more stable.

[0044] This embodiment also provides a battery, which includes a shell, a pole group, and the above-mentioned battery cover assembly. An opening is provided on one side of the shell, and the pole group is installed in the shell through the opening. The battery cover assembly is arranged at the opening of the shell, and the bare aluminum sheet 100 of the battery cover assembly is welded to the shell. By adopting the battery cover assembly in this embodiment, during the assembly process, the O-ring 300 is not prone to distortion or flanging problems, and the helium inspection pass rate is high and the assembly efficiency is high. In addition, the O-ring 300 has a full range of sizes and specifications, which can be well adapted to poles 200 and bare aluminum sheets 100 of various specifications, reducing mold opening costs.

[0045] Obviously, the above-described embodiments of the present invention are merely examples for the purpose of clearly illustrating the present invention and are not intended to limit the manner in which the present invention is to be implemented. A person skilled in the art would be able to make various obvious changes, readjustments, and substitutions without departing from the scope of protection of the present invention. It is not necessary and impossible to enumerate all embodiments here. Any modifications, equivalent substitutions, and improvements made within the spirit and principles of the present invention shall be included within the scope of protection of the claims of the present invention.

Claims

1. A battery cover assembly, characterized in that: include: A plain aluminum sheet (100) is provided with a first mounting hole (110); A pole (200) is inserted into the first mounting hole (110); a mounting groove (221) is provided on a peripheral side wall of the pole (200); and the mounting groove (221) is located in the first mounting hole (110); An O-type sealing ring (300) is sleeved on the pole (200), with the inner side of the O-type sealing ring (300) abutting against the bottom of the mounting groove (221), and the outer side of the O-type sealing ring (300) abutting against the inner wall of the first mounting hole (110).

2. The battery cover assembly according to claim 1, characterized in that: The battery cover assembly further comprises an upper plastic part (400), a lower plastic part (500) and a rivet block (600); one end of the pole (200) passes through the lower plastic part (500), the first mounting hole (110), the upper plastic part (400) and the rivet block (600), and is then riveted to the rivet block (600).

3. The battery cover assembly according to claim 2, characterized in that: The pole (200) comprises a first connecting portion (210), a column portion (220) and a second connecting portion (230) connected in sequence, the second connecting portion (230) being passed through the riveting block (600) and being riveted to the riveting block (600), the column portion (220) being passed through the lower plastic part (500), the first mounting hole (110) and the upper plastic part (400), and the mounting groove (221) being provided on the peripheral side wall of the column portion (220).

4. The battery cover assembly according to claim 3, characterized in that: The second connecting portion (230) is riveted to form a limiting protrusion (231), and the limiting protrusion (231) presses the riveting block (600) against the upper plastic part (400), and the upper plastic part (400) presses the bare aluminum sheet (100).

5. The battery cover assembly according to claim 3, characterized in that: The first connecting portion (210) is a square plate, and the square plate presses the lower plastic part (500) against the smooth aluminum sheet (100).

6. The battery cover assembly according to claim 2, characterized in that: One of the upper plastic part (400) and the riveting block (600) is provided with a first limiting portion (420), and the other of the upper plastic part (400) and the riveting block (600) is provided with a first limiting groove (620), and the first limiting portion (420) can be inserted into the first limiting groove (620).

7. The battery cover assembly according to claim 6, characterized in that: A plurality of the first limiting portions (420) and the first limiting grooves (620) are provided, and the first limiting portions (420) correspond to the first limiting grooves (620) in a one-to-one manner.

8. The battery cover assembly according to claim 2, characterized in that: One of the upper plastic part (400) and the smooth aluminum sheet (100) is provided with a second limiting portion (430), and the other of the upper plastic part (400) and the smooth aluminum sheet (100) is provided with a second limiting groove (120), and the second limiting portion (430) can be inserted into the second limiting groove (120).

9. The battery cover assembly according to claim 8, characterized in that: A plurality of the second limiting portions (430) and the second limiting grooves (120) are provided, and the second limiting portions (430) correspond to the second limiting grooves (120) in a one-to-one manner.

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

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