Anti-rotation battery top cover and battery
By designing the positioning groove and positioning protruding structure between the pole pillar of the battery cover and the upper plastic, the loosening problem caused by torque during the battery use is solved, and the normal use and safety performance of the battery are guaranteed.
Patent Information
- Application Number
- CN202421554358.4
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-07-03
- Publication Date
- 2025-06-03
- Estimated Expiration
- 2034-07-03
AI Technical Summary
During the use of the battery, the pole pillar is easily affected by circumferential torque, which leads to loosening between the upper plastic and the pole pillar, causing the pole pillar to rotate relative to the upper plastic, affecting the normal use and safety of the battery.
An anti-rotating battery ceiling is designed, by opening a set positioning groove on the side wall of the second part of the pole pillar and setting corresponding positioning protrusions on the inner wall of the inner ring of the upper plastic to ensure that the positioning protrusions are located at the positioning recess, thereby preventing the pole pillar from twisting relative to the upper plastic.
It effectively prevents the rotation of the pole column from relative to the upper plastic, alleviates the circumferential torque exposed to the pole column, and ensures the normal use and safety performance of the battery.
Smart Images
Figure CN222940033U_ABST
Abstract
Description
Technical Field
[0001] The utility model relates to the technical field of energy storage devices, in particular to an anti-rotation battery top cover and a battery. Background Art
[0002] In the process of making the battery top cover, it is necessary to first put the sealing ring on the pole, then make the pole pass through the lower plastic and the top cover sheet in turn, and then use the injection molding process to inject the upper plastic around the pole to fix the pole. However, during the use of the battery, the pole will be affected by the circumferential torsion, and the upper plastic and the pole are prone to loosening, causing the pole to rotate relative to the upper plastic, affecting the normal use of the battery and even affecting the safety of the battery.
[0003] Therefore, there is an urgent need for an anti-rotation battery cover and a battery to solve the above problems. Utility Model Content
[0004] One purpose of the utility model is to provide an anti-rotation battery top cover, which can prevent the pole from rotating relative to the upper plastic.
[0005] To achieve this purpose, the utility model adopts the following technical solutions:
[0006] Provided is an anti-rotation battery top cover, comprising:
[0007] Top cover plate;
[0008] A pole, the pole comprising a first portion and a second portion connected along its axial direction, the first portion being inserted through the through hole of the top cover plate, the second portion protruding from the top cover plate, and a positioning groove being provided on a side wall of the second portion;
[0009] The upper plastic is sleeved on the first part and the second part. A positioning protrusion is convexly provided on the inner wall of the inner ring of the upper plastic. The positioning protrusion is located at the positioning groove. The upper plastic is connected to the top cover plate.
[0010] Optionally, the positioning groove is an arched groove, and the positioning protrusion is a corresponding arched protrusion.
[0011] Optionally, the bottom of the arched groove is a first plane, the first plane is perpendicular to the radial direction of the cross section of the pole, and the bottom of the arched groove is opened through along a first direction, and the first direction is perpendicular to the axial direction of the pole.
[0012] Optionally, a plurality of positioning grooves are provided, and a plurality of positioning protrusions are provided accordingly.
[0013] Optionally, a limiting groove is formed on the top cover plate, and a limiting protrusion is arranged on the surface of the upper plastic facing the top cover plate. The limiting protrusion is inserted into the limiting groove.
[0014] Optionally, the surface of the upper plastic facing the top cover plate is an annular surface, and a plurality of the limiting protrusions are arranged at intervals along the circumferential direction of the annular surface. A plurality of the limiting grooves are correspondingly formed on the top cover plate, and the plurality of limiting protrusions are inserted into the plurality of limiting grooves one by one.
[0015] Optionally, the anti-rotation battery top cover further includes a lower plastic, and the lower plastic is connected to the side of the top cover plate facing the battery inner cavity.
[0016] Optionally, the pole column includes a connecting portion, and the connecting portion is located at one end of the pole column facing the battery inner cavity. The lower plastic is partially clamped between the connecting portion and the top cover plate.
[0017] Optionally, the anti-rotation battery top cover further includes a sealing ring, and the sealing ring is sleeved on the pole column. The sealing ring is used to block the gap between the pole column and the through hole of the top cover plate.
[0018] Another object of the present invention is to provide a battery that can prevent the pole column from rotating relative to the upper plastic.
[0019] To achieve this purpose, the present invention adopts the following technical solutions:
[0020] Provide a battery, including a box body and the above-mentioned anti-rotation battery top cover. The anti-rotation battery top cover is covered on the opening of the box body so that the anti-rotation battery top cover and the box body jointly form a battery housing.
[0021] The beneficial effects of the present invention:
[0022] The present invention provides an anti-rotation battery top cover, including a top cover plate, a pole column and an upper plastic. Among them, the pole column includes a first part and a second part connected along its own axial direction. The first part passes through the through hole of the top cover plate, and the second part protrudes from the top cover plate. A positioning groove is formed on the side wall of the second part. The upper plastic is sleeved on the first part and the second part. A positioning protrusion protrudes from the inner wall of the inner circle of the upper plastic, and the positioning protrusion is located at the positioning groove. The upper plastic is connected to the top cover plate. Through the cooperation between the positioning protrusion and the positioning groove, the pole column can be prevented from twisting relative to the upper plastic, and the circumferential torque received by the pole column can be relieved, ensuring the normal use of the battery.
[0023] The present utility model provides a battery, which includes a box body and the above-mentioned anti-rotation battery top cover. The anti-rotation battery top cover is covered at the opening of the box body, so that the anti-rotation battery top cover and the box body jointly form a battery housing. The top cover of this battery can prevent the pole post from rotating relative to the upper plastic, ensuring the normal use of the battery. Description of the Drawings
[0024] Figure 1 is a schematic structural diagram of the anti-rotation battery top cover provided by the embodiment of the present utility model from the first perspective;
[0025] Figure 2 is a partial exploded view of the anti-rotation battery top cover provided by the embodiment of the present utility model;
[0026] Figure 3 is a schematic structural diagram of the anti-rotation battery top cover provided by the embodiment of the present utility model from the second perspective;
[0027] Figure 4 is Figure 3 the A-A cross-sectional view in
[0028] In the figure:
[0029] 1. Top cover plate; 11. Limit groove;
[0030] 2. Pole post; 21. First part; 22. Second part; 221. Positioning groove; 23. Connecting part;
[0031] 3. Upper plastic; 31. Positioning protrusion; 32. Limit protrusion;
[0032] 4. Lower plastic; 5. Sealing ring. Detailed Embodiment
[0033] The technical solution of the present utility model will be further described below in conjunction with the drawings and embodiments. It can be understood that the specific embodiments described herein are only used to explain the present utility model, rather than limiting the present utility model. Additionally, it should be noted that for the sake of description, only parts related to the present utility model are shown in the drawings, rather than all of them.
[0034] In the description of the present utility model, it should be noted that unless otherwise clearly defined and limited, the terms "installation", "connection", and "connection" should be understood in a broad sense. For example, it can be a fixed connection or a detachable connection; it can be a mechanical connection or an electrical connection; it can be directly connected or indirectly connected through an intermediate medium, and it can be the communication inside two components. For those of ordinary skill in the art, the specific meanings of the above terms in the present utility model can be understood according to specific circumstances.
[0035] In the present utility model, unless otherwise clearly defined and limited, the first feature being "above" or "below" the second feature may include the direct contact between the first and second features, or may include the situation where the first and second features are not in direct contact but in contact through additional features therebetween. Moreover, the first feature being "above", "over" and "on top of" the second feature includes that the first feature is directly above and obliquely above the second feature, or merely indicates that the horizontal height of the first feature is higher than that of the second feature. The first feature being "below", "beneath" and "underneath" the second feature includes that the first feature is directly below and obliquely below the second feature, or merely indicates that the horizontal height of the first feature is lower than that of the second feature.
[0036] As Figures 1-4 shown, the anti-rotation battery top cover of this embodiment includes a top cover plate 1, a pole column 2 and an upper plastic 3. Among them, the pole column 2 includes a first part 21 and a second part 22 connected along its own axial direction. The first part 21 is inserted through the through hole of the top cover plate 1, and the second part 22 protrudes from the top cover plate 1. A positioning groove 221 is formed on the side wall of the second part 22. The upper plastic 3 is sleeved on the first part 21 and the second part 22. A positioning protrusion 31 protrudes from the inner wall of the inner circle of the upper plastic 3. The positioning protrusion 31 is located at the positioning groove 221, and the upper plastic 3 is connected to the top cover plate 1. Through the cooperation between the positioning protrusion 31 and the positioning groove 221, the pole column 2 can be prevented from twisting relative to the upper plastic 3, and part of the torsion can be transmitted to the upper plastic 3, relieving the circumferential torsion received by the pole column 2, preventing the pole column 2 from twisting, and ensuring the normal use of the battery. Of course, protrusions can also be provided on the pole column 2, and grooves can be formed on the inner wall of the inner circle of the upper plastic 3. This may cause inconvenience in sleeving the sealing ring 5. However, multiple protrusions can be arranged staggeredly so that the multiple protrusions are not at the same height, relieving the inconvenience in sleeving the sealing ring 5.
[0037] Optionally, the positioning groove 221 is an arched groove, and the positioning protrusion 31 is a corresponding arched protrusion. Optionally, the bottom of the arched groove is a first plane, the first plane is perpendicular to the radial direction of the cross-section of the pole column 2, and the bottom of the arched groove penetrates along a first direction, and the first direction is perpendicular to the axial direction of the pole column 2. Such an arched groove is convenient to be formed, the manufacturing process is simple, and it is beneficial to ensure the production efficiency.
[0038] Optionally, a plurality of positioning grooves 221 are formed, and a plurality of positioning protrusions 31 are correspondingly provided. The plurality of positioning protrusions 31 are respectively inserted into the plurality of positioning grooves 221. Optionally, the plurality of positioning grooves 221 are evenly spaced along the circumferential direction of the side wall of the second part 22 of the pole column 2, so that the torsional force between the pole column 2 and the upper plastic 3 is evenly distributed, preventing local excessive stress.
[0039] To prevent the upper plastic 3 from twisting or rotating relative to the top cover plate 1, optionally, a limiting groove 11 is provided on the top cover plate 1, and a limiting protrusion 32 is provided on the surface of the upper plastic 3 facing the top cover plate 1. The limiting protrusion 32 is inserted into the limiting groove 11. In this embodiment, the limiting protrusion 32 is cylindrical. Of course, in other embodiments, it can also be a polygonal column or other shapes, which is not limited herein.
[0040] Optionally, the surface of the upper plastic 3 facing the top cover plate 1 is an annular surface, and a plurality of limiting protrusions 32 are arranged at intervals along the circumferential direction on the annular surface. A plurality of limiting grooves 11 are correspondingly provided on the top cover plate 1, and the plurality of limiting protrusions 32 are inserted into the plurality of limiting grooves 11 one by one. Optionally, the plurality of limiting protrusions 32 are arranged at equal intervals along the circumferential direction, so that the torsional force distribution between the upper plastic 3 and the top cover plate 1 is balanced, preventing local overstress.
[0041] Optionally, the anti-rotation battery top cover further includes a lower plastic 4, and the lower plastic 4 is connected to the side of the top cover plate 1 facing the battery inner cavity to ensure insulation between the top cover plate 1 and other components inside the battery.
[0042] Optionally, the pole post 2 includes a connecting portion 23, and the connecting portion 23 is located at one end of the pole post 2 facing the battery inner cavity. The second portion 22, the first portion 21 and the connecting portion 23 are connected in sequence, and a part of the lower plastic 4 is clamped between the connecting portion 23 and the top cover plate 1 to ensure insulation between the connecting portion 23 and the top cover plate 1.
[0043] Optionally, the anti-rotation battery top cover further includes a sealing ring 5, and the sealing ring 5 is sleeved on the pole post 2. The sealing ring 5 is used to seal the gap between the pole post 2 and the through hole of the top cover plate 1. In this embodiment, the sealing ring 5 is axially clamped between the upper plastic 3, the top cover plate 1 and the connecting portion 23, and is radially clamped between the pole post 2 and the lower plastic 4, which can not only play a sealing role, but also further ensure insulation between the pole post 2 and the top cover plate 1.
[0044] Optionally, an annular groove is also provided around the side wall of the pole post 2, and an annular protrusion is provided on the inner ring inner wall of the upper plastic 3. The annular protrusion cooperates with the annular groove to further ensure the axial relative position fixation between the two, and can also press the cooperation between the pole post 2, the top cover plate 1 and the lower plastic 4.
[0045] Optionally, in this embodiment, positioning grooves 221 are provided on both the positive pole post and the negative pole post of the anti-rotation battery top cover, and corresponding two upper plastics 3 are also provided with positioning protrusions 31. Of course, in other embodiments, the positioning groove 221 can also be provided only on the positive pole post, or only on the negative pole post, that is, only one pole post 2 is provided with an anti-rotation structure, and the other is not.
[0046] The manufacturing process of the anti-rotation battery top cover includes: first, welding the explosion-proof sheet and the top cover plate 1 into an assembly, then sleeving the sealing ring 5 on the pole column 2 and placing it into the encapsulation mold, then putting the lower plastic 4 and the assembly on the pole column 2, and finally performing encapsulation to form the upper plastic 3.
[0047] This embodiment also provides a battery, which includes a box body and the above-mentioned anti-rotation battery top cover. The anti-rotation battery top cover is covered at the opening of the box body so that the anti-rotation battery top cover and the box body jointly form a battery housing. The top cover of this battery can prevent the pole column 2 from rotating relative to the upper plastic 3, and can also prevent the pole column 2 from rotating relative to the top cover plate 1, preventing the electrical connection on the pole column 2 from loosening, ensuring the normal use of the battery and also ensuring the safety performance of the battery.
[0048] Obviously, the above-mentioned embodiments of the present invention are only examples for clearly explaining the present invention, rather than limitations on the implementation manners of the present invention. For those of ordinary skill in the art, other different forms of changes or modifications can be made based on the above description. It is not necessary and impossible to enumerate all the implementation manners here. Any modifications, equivalent replacements, and improvements made within the spirit and principle of the present invention shall be included within the protection scope of the claims of the present invention.
Claims
1. Anti-rotation battery cover, characterized in that: include: Top cover plate (1); A pole (2), the pole (2) comprising a first portion (21) and a second portion (22) connected along its own axial direction, the first portion (21) being inserted through a through hole of the top cover plate (1), the second portion (22) protruding from the top cover plate (1), and a positioning groove (221) being provided on a side wall of the second portion (22); The upper plastic (3) is sleeved on the first part (21) and the second part (22), and a positioning protrusion (31) is convexly provided on the inner wall of the inner ring of the upper plastic (3), and the positioning protrusion (31) is located at the positioning groove (221), and the upper plastic (3) is connected to the top cover plate (1).
2. The anti-rotation battery cover according to claim 1, characterized in that: The positioning groove (221) is an arched groove, and the positioning protrusion (31) is a corresponding arched protrusion.
3. The anti-rotation battery cover according to claim 2, characterized in that: The bottom of the arched groove is a first plane, the first plane is perpendicular to the radial direction of the cross section of the pole (2), and the bottom of the arched groove is opened through along a first direction, the first direction is perpendicular to the axial direction of the pole (2).
4. The anti-rotation battery cover according to claim 1, characterized in that: The positioning grooves (221) are provided in plurality, and the positioning protrusions (31) are correspondingly provided in plurality.
5. The anti-rotation battery cover according to any one of claims 1 to 4, characterized in that: A limiting groove (11) is provided on the top cover plate (1), and a limiting protrusion (32) is provided on the surface of the upper plastic (3) facing the top cover plate (1), and the limiting protrusion (32) is inserted into the limiting groove (11).
6. The anti-rotation battery cover according to claim 5, characterized in that: The surface of the upper plastic (3) facing the top cover plate (1) is an annular surface, and a plurality of limiting protrusions (32) are arranged at intervals along the circumferential direction on the annular surface. A plurality of limiting grooves (11) are correspondingly opened on the top cover plate (1), and the plurality of limiting protrusions (32) are inserted into the plurality of limiting grooves (11) in a one-to-one correspondence.
7. The anti-rotation battery top cover according to any one of claims 1 to 4, characterized in that: The anti-rotation battery top cover also includes a lower plastic (4), and the lower plastic (4) is connected to a side of the top cover plate (1) facing the battery inner cavity.
8. The anti-rotation battery cover according to claim 7, characterized in that: The pole (2) comprises a connecting portion (23), the connecting portion (23) being located at one end of the pole (2) facing the inner cavity of the battery, and the lower plastic (4) portion being sandwiched between the connecting portion (23) and the top cover plate (1).
9. The anti-rotation battery cover according to any one of claims 1 to 4, characterized in that: The anti-rotation battery top cover also includes a sealing ring (5), which is sleeved on the pole (2) and is used to seal the gap between the pole (2) and the through hole of the top cover plate (1).
10. A battery, characterized in that It comprises a box body and an anti-rotation battery top cover as described in any one of claims 1 to 9, wherein the anti-rotation battery top cover is arranged at the opening of the box body so that the anti-rotation battery top cover and the box body together form a battery shell.