Cylindrical battery anti-rotation structure and cylindrical battery

Abstract

The anti-rotation structure of the cylindrical battery comprises a top cover piece and an upper plastic part, the top cover piece is provided with a pole hole, an anti-rotation groove is annularly arranged on the periphery of the pole hole, the anti-rotation groove comprises at least two first arc-shaped inclined planes which are connected end to end, and the upper plastic part is arranged on the top cover piece. The surface, facing the top cover piece, of the upper plastic part is provided with an anti-rotation part, the anti-rotation part comprises at least two second arc-shaped inclined faces connected end to end, the anti-rotation part extends into the anti-rotation groove, and the second arc-shaped inclined faces abut against the first arc-shaped inclined faces in a one-to-one correspondence mode. Under the condition that the conductivity of the battery is ensured, the upper plastic part is prevented from rotating relative to the top cover plate, so that the stability of the whole structure is enhanced, and the service life and the reliability of a product are prolonged.

Description

Technical Field

[0001] This utility model relates to the field of batteries, and more specifically, to a cylindrical battery anti-rotation structure and a cylindrical battery. Background Technology

[0002] A power battery cover typically includes an insulating component, a cover body, and terminals. Currently, a plastic insert is usually installed between the cover body and the terminals. This insert is primarily used to prevent short circuits between the terminals and the cover assembly, playing a crucial role in the safe insulation of the power battery. However, the existing plastic insert is prone to rotation relative to the cover when it mates with the terminals and the cover, leading to misalignment or detachment of the plastic insert. This can cause short circuits or cracking of the battery, posing a significant safety hazard. Utility Model Content

[0003] The purpose of this utility model is to provide a cylindrical battery anti-rotation structure and a cylindrical battery, which can prevent the upper plastic part from rotating relative to the top cover plate while ensuring the battery's conductivity, thereby enhancing the stability of the overall structure and extending the product's lifespan and reliability.

[0004] A cylindrical battery anti-rotation structure includes a top cover and an upper plastic part. The top cover has a terminal hole, and an anti-rotation groove is provided around the outer periphery of the terminal hole. The anti-rotation groove includes at least two first arc-shaped inclined surfaces that are connected end to end. The upper plastic part has an anti-rotation part on the surface facing the top cover. The anti-rotation part includes at least two second arc-shaped inclined surfaces that are connected end to end. The anti-rotation part extends into the anti-rotation groove, and the second arc-shaped inclined surfaces correspond to and abut against the first arc-shaped inclined surfaces one by one.

[0005] In the above technical solution, the top cover is provided with an anti-rotation groove, and the upper plastic part is provided with an anti-rotation part corresponding to the anti-rotation groove. During assembly, the anti-rotation part is inserted into the anti-rotation groove, and the first arc-shaped inclined surface and the second arc-shaped inclined surface are aligned and abutted one-to-one, thereby limiting the upper plastic part. On the one hand, it can position the upper plastic part and facilitate its installation. On the other hand, it can restrict the upper plastic part from rotating around its circumference, preventing relative movement between the upper plastic part and the top cover, thereby ensuring structural stability, improving product safety, and extending product service life.

[0006] Furthermore, a vertical first abutment surface is formed between two adjacent first arc-shaped inclined surfaces, and a vertical second abutment surface is formed between two adjacent second arc-shaped inclined surfaces, with the first abutment surface abutting against the second abutment surface.

[0007] In the above technical solution, when the anti-rotation part extends into the anti-rotation groove, the first abutting surface abuts against the second abutting surface, thereby limiting the rotation of the upper plastic part and ensuring the relative stability between the upper plastic part and the top cover plate.

[0008] Furthermore, both the first and second arc-shaped inclined surfaces are arranged rotationally symmetrically about the center of the pole hole.

[0009] In the above technical solution, the first and second arc-shaped inclined surfaces are arranged in a rotationally symmetrical manner, which makes the force between the upper plastic part and the top cover plate more uniform and the structure more stable.

[0010] Furthermore, there are four of each of the first and second arc-shaped inclined surfaces. The angle between the two ends of the first arc-shaped inclined surface and the center of the pole hole, and the angle between the two ends of the second arc-shaped inclined surface and the center of the pole hole, are both 90°.

[0011] In the above technical solution, four first and second arc-shaped inclined planes are set up, which can evenly distribute the force and ensure the stability of the structure.

[0012] Furthermore, the slope of the first arc-shaped inclined plane is equal to the slope of the second arc-shaped inclined plane.

[0013] In the above technical solution, the slope of the first arc-shaped inclined plane is equal to the slope of the second arc-shaped inclined plane, which enables the two to come into close contact, thereby ensuring uniform force distribution and structural stability.

[0014] Furthermore, it also includes an electrode post, which passes through the electrode post hole, and the upper plastic part is sleeved on the outer periphery of the electrode post and sandwiched between the anti-rotation groove and the electrode post.

[0015] In the above technical solution, the upper plastic part can isolate the electrode post from the top cover plate, thereby ensuring the insulation of the electrode post.

[0016] Furthermore, an insulating element is sleeved around the outer periphery of the pole post, and the insulating element is located between the inner wall of the pole post hole and the pole post.

[0017] In the above technical solution, the insulating component can isolate the pole post from the inner wall of the pole post hole, preventing them from coming into contact and short-circuiting, thus achieving an insulating effect.

[0018] Furthermore, it also includes a lower plastic component, which is disposed on the side of the top cover plate opposite to the upper plastic component. The lower plastic component extends into the electrode hole and is sandwiched between the electrode and the top cover plate.

[0019] In the above technical solution, the lower plastic part can isolate the electrode post from the lower end face of the top cover plate, ensuring the insulation between the electrode post and the top cover plate.

[0020] Furthermore, the upper plastic part is made of insulating material.

[0021] A cylindrical battery, including the above-described cylindrical battery anti-rotation structure.

[0022] Compared with the prior art, the beneficial effects of this utility model are as follows: the top cover plate is provided with an anti-rotation groove, and the upper plastic part is provided with an anti-rotation part corresponding to the anti-rotation groove. During assembly, the anti-rotation part is inserted into the anti-rotation groove, and the first arc-shaped inclined surface and the second arc-shaped inclined surface are aligned and abutted one-to-one, thereby limiting the upper plastic part. On the one hand, it can position the upper plastic part and facilitate its installation. On the other hand, it can restrict the upper plastic part from rotating around its circumference, preventing relative movement between the upper plastic part and the top cover plate, thereby ensuring the stability of the structure, improving the safety of the product, and extending the service life of the product. Attached Figure Description

[0023] Figure 1 This is an exploded view of the anti-rotation structure of the cylindrical battery according to an embodiment of the present invention.

[0024] Figure 2 This is a cross-sectional schematic diagram of the anti-rotation structure of the cylindrical battery according to an embodiment of the present invention.

[0025] Figure 3 This is a schematic diagram of the structure of the upper plastic part according to an embodiment of the present utility model.

[0026] Figure 4 for Figure 3 A magnified view of part A in the diagram.

[0027] Figure 5 This is a schematic diagram of the top cover sheet according to an embodiment of the present invention.

[0028] Figure 6 for Figure 5 A magnified view of part B in the diagram.

[0029] Explanation of icon numbers:

[0030] Top cover 1, pole hole 11, anti-rotation groove 12, first arc-shaped inclined surface 13, first supporting surface 14, upper plastic part 2, anti-rotation part 21, second arc-shaped inclined surface 22, second supporting surface 23, pole 3, insulating part 4, lower plastic part 5. Detailed Implementation

[0031] To facilitate understanding of this invention, a more comprehensive description will be provided below with reference to the accompanying drawings. The drawings illustrate preferred embodiments of the invention. However, this invention can be implemented in many different forms and is not limited to the embodiments described herein.

[0032] Please refer to Figures 1 to 4In a preferred embodiment, the anti-rotation structure of the cylindrical battery of this utility model mainly includes a top cover plate 1 and an upper plastic part 2. The top cover plate 1 has an electrode post hole 11, and an anti-rotation groove 12 is provided around the outer periphery of the electrode post hole 11. The anti-rotation groove 12 includes at least two first arc-shaped inclined surfaces 13 connected end-to-end. The surface of the upper plastic part 2 facing the top cover plate 1 has an anti-rotation part 21, which includes at least two second arc-shaped inclined surfaces 22 connected end-to-end. The anti-rotation part 21 extends into the anti-rotation groove 12, and the second arc-shaped inclined surfaces 22 correspond to and abut against the first arc-shaped inclined surfaces 13 one-to-one.

[0033] For example, the top cover 1 is circular, the pole hole 11 is opened at the center of the top cover 1, and the anti-rotation groove 12 is annular around the outer periphery of the pole hole 11, and the anti-rotation groove 12 is coaxial with the pole hole 11. The upper plastic part 2 is annular, and the anti-rotation part 21 is provided on the lower end face of the upper plastic part 2. The anti-rotation part 21 can extend into the anti-rotation groove 12, so that the second arc-shaped inclined surface 22 abuts against the first arc-shaped inclined surface 13.

[0034] As can be seen from the above technical solution, the top cover plate 1 is provided with an anti-rotation groove 12, and the upper plastic part 2 is provided with an anti-rotation part 21 corresponding to the anti-rotation groove 12. During assembly, the anti-rotation part 21 is inserted into the anti-rotation groove 12, and the first arc-shaped inclined surface 13 and the second arc-shaped inclined surface 22 are aligned and abutted one-to-one, thereby limiting the upper plastic part 2. On the one hand, it can position the upper plastic part 2, which is convenient for the installation of the upper plastic part 2. On the other hand, it can restrict the upper plastic from rotating along its circumference, avoid relative movement between the upper plastic and the top cover plate 1, thereby ensuring the stability of the structure, improving the safety of the product, and extending the service life of the product.

[0035] In this embodiment, a vertical first abutment surface 14 is formed between two adjacent first arc-shaped inclined surfaces 13, and a vertical second abutment surface 23 is formed between two adjacent second arc-shaped inclined surfaces 22. The first abutment surface 14 and the second abutment surface 23 abut against each other. Specifically, both the first arc-shaped inclined surface 13 and the second arc-shaped inclined surface 22 are formed as inclined surfaces that gradually rise from the starting end to the ending end. The ending end of one first arc-shaped inclined surface 13 and the starting end of the other first arc-shaped inclined surface 13 form a first abutment surface 14 due to the height difference. Similarly, the ending end of one second arc-shaped inclined surface 22 and the starting end of the other second arc-shaped inclined surface 22 form a second abutment surface 23 due to the height difference. When the anti-rotation part 21 extends into the anti-rotation groove 12, the first abutment surface 14 and the second abutment surface 23 abut against each other, thereby limiting the rotation of the upper plastic part 2 and ensuring the relative stability between the upper plastic part 2 and the top cover plate 1. It is understandable that the first abutment surface 14 and the second abutment surface 23 are at the same height to ensure that they can fit together tightly.

[0036] In this embodiment, the first arc-shaped inclined surface 13 and the second arc-shaped inclined surface 22 are arranged symmetrically about the center of the pole hole 11, thereby making the force between the upper plastic part 2 and the top cover plate 1 more uniform and the structure more stable. As a preferred embodiment, there are four of each of the first arc-shaped inclined surface 13 and the second arc-shaped inclined surface 22. The angles between the two ends of the first arc-shaped inclined surface 13 and the center of the pole hole 11, and the angles between the two ends of the second arc-shaped inclined surface 22 and the center of the pole hole 11, are both 90°. Setting four of the first arc-shaped inclined surface 13 and the second arc-shaped inclined surface 22 can evenly distribute the force and ensure the stability of the structure. It is understood that in other possible embodiments, the number of the first arc-shaped inclined surface 13 and the second arc-shaped inclined surface 22 can be set according to actual needs, as long as the number of both is equal.

[0037] In this embodiment, the slope of the first arc-shaped inclined surface 13 is equal to the slope of the second arc-shaped inclined surface 22 to ensure that the two are in close contact, thereby ensuring uniform force distribution and structural stability.

[0038] The anti-rotation structure of the cylindrical battery in this embodiment of the utility model also includes a terminal post 3, which passes through the terminal post hole 11. An upper plastic part 2 is sleeved on the outer periphery of the terminal post 3 and sandwiched between the anti-rotation groove 12 and the terminal post 3. In specific implementation, the upper plastic part 2 is made of insulating material, which can isolate the terminal post 3 from the top cover plate 1, thereby ensuring the insulation of the terminal post 3.

[0039] An insulating element 4 is sleeved around the outer periphery of the electrode post 3. The insulating element 4 is located between the inner wall of the electrode post hole 11 and the electrode post 3. The insulating element 4 can isolate the electrode post 3 from the inner wall of the electrode post hole 11, preventing them from contacting and short-circuiting, thus achieving an insulating effect.

[0040] The anti-rotation structure of the cylindrical battery in this embodiment of the utility model also includes a lower plastic component 5. The lower plastic component 5 is disposed on the side of the top cover plate 1 opposite to the upper plastic component 2. The lower plastic component 5 extends into the terminal hole 11 and is sandwiched between the terminal 3 and the top cover plate 1. The lower plastic component 5 can isolate the terminal 3 from the lower end face of the top cover plate 1, ensuring insulation between the terminal 3 and the top cover plate 1.

[0041] This utility model also provides a cylindrical battery, including the above-mentioned cylindrical battery anti-rotation structure, so the cylindrical battery also has the beneficial effects of the above-mentioned cylindrical battery anti-rotation structure.

[0042] In the description of this utility model, it should be understood that terms such as "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", and "outer" indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are only for the convenience of describing this utility model 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 utility model.

[0043] Furthermore, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include one or more of that feature. In the description of this utility model, "a plurality of" means two or more, unless otherwise explicitly specified.

[0044] Although embodiments of the present invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the present invention, the scope of which is defined by the appended claims and their equivalents.

Claims

1. A cylindrical battery anti-rotation structure, characterized in that, The device includes a top cover and an upper plastic part. The top cover has an electrode post hole, and an anti-rotation groove is provided around the outer periphery of the electrode post hole. The anti-rotation groove includes at least two first arc-shaped inclined surfaces that are connected end to end. The upper plastic part has an anti-rotation part on the surface facing the top cover. The anti-rotation part includes at least two second arc-shaped inclined surfaces that are connected end to end. The anti-rotation part extends into the anti-rotation groove, and the second arc-shaped inclined surfaces correspond to and abut against the first arc-shaped inclined surfaces one by one.

2. The cylindrical battery anti-rotation structure according to claim 1, characterized in that, A vertical first abutment surface is formed between two adjacent first arc-shaped inclined surfaces, and a vertical second abutment surface is formed between two adjacent second arc-shaped inclined surfaces, with the first abutment surface abutting against the second abutment surface.

3. The cylindrical battery anti-rotation structure according to claim 1, characterized in that, The first and second arc-shaped inclined surfaces are both arranged rotationally symmetrically about the center of the pole hole.

4. The cylindrical battery anti-rotation structure according to claim 3, characterized in that, There are four of each of the first and second arc-shaped inclined surfaces. The angle between the two ends of the first arc-shaped inclined surface and the line connecting the center of the pole hole, and the angle between the two ends of the second arc-shaped inclined surface and the center of the pole hole, are both 90°.

5. The cylindrical battery anti-rotation structure according to claim 1, characterized in that, The slope of the first arc-shaped inclined plane is equal to the slope of the second arc-shaped inclined plane.

6. The anti-rotation structure for cylindrical batteries according to claim 1, characterized in that, It also includes an electrode post, which passes through the electrode post hole, and the upper plastic part is sleeved on the outer periphery of the electrode post and sandwiched between the anti-rotation groove and the electrode post.

7. The cylindrical battery anti-rotation structure according to claim 6, characterized in that, An insulating element is fitted around the outer periphery of the pole post, and the insulating element is located between the inner wall of the pole post hole and the pole post.

8. The cylindrical battery anti-rotation structure according to claim 6, characterized in that, It also includes a lower plastic component, which is disposed on the side of the top cover plate away from the upper plastic component. The lower plastic component extends into the electrode hole and is sandwiched between the electrode and the top cover plate.

9. The cylindrical battery anti-rotation structure according to claim 1, characterized in that, The upper plastic part is made of insulating material.

10. A cylindrical battery, characterized in that, Includes a cylindrical battery anti-rotation structure as described in any one of claims 1 to 9.

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