Battery cover plate assembly and single battery

Abstract

The utility model belongs to the technical field of batteries, and discloses a battery cover plate assembly and a single battery. The battery cover plate assembly comprises a cover plate body, an upper plastic part, a lower plastic part, a pole and a riveting part, the pole sequentially penetrates through the lower plastic part, the cover plate body, the upper plastic part and the riveting part in a sealed mode and is connected with the riveting part in a riveted mode, and pole holes are formed in the lower plastic part, the cover plate body, the upper plastic part and the riveting part so that the pole can penetrate through the pole holes; a first anti-rotation assembly is arranged between the cover plate body and the upper plastic part, a second anti-rotation assembly is arranged between the upper plastic part and the riveting part, and the first anti-rotation assembly, the second anti-rotation assembly and the pole hole are coaxially arranged. The battery cover plate assembly can realize rotation prevention of the pole, and is simple in structure and larger in bearing torque.

Description

TECHNICAL FIELD

[0001] The utility model relates to battery technology field especially relates to a battery cover plate subassembly and single battery. BACKGROUND

[0002] With the continuous development of new energy, the requirement of single battery is more and more, and for single battery, battery cover plate subassembly is also one of its important structures.

[0003] At present, in the manufacturing process of battery cover plate subassembly, the sealing ring is arranged on the pole post, then the pole post is sequentially arranged through the lower plastic part and the cover plate body, and then the upper plastic part and the pressing block are assembled on the top end of the pole post, and the pole post and the pressing block are riveted and welded to realize the forming of the battery cover plate subassembly. However, during the use of the battery, the pole post and the pressing block are easily affected by the circumferential torsion of the pole post hole, which causes the rotation between the upper plastic part and the pressing block and the cover plate body, which causes the rotation of the pole post, and the connection structure connected with the pole post is twisted or twisted, which causes short circuit and other problems, thereby affecting the safety of the battery. In the prior art, a plurality of anti-rotation structures are arranged between the cover plate body and the upper plastic part, and between the upper plastic part and the pressing block, the structure is increased, and the installation positioning is formed, which causes the assembly to be complicated, and the positions of the two anti-rotation structures are inconsistent, which causes the positions of the structure to be different, thereby reducing the anti-rotation effect.

[0004] Therefore, a battery cover plate subassembly and a single battery are needed to solve the above technical problems. INVENTION CONTENTS

[0005] One purpose of the utility model is to provide a battery cover plate subassembly, which can realize the anti-rotation of the pole post, and the structure is simple and can bear larger torque.

[0006] To achieve this purpose, the utility model adopts the following technical scheme:

[0007] The battery cover plate subassembly comprises a cover plate body, an upper plastic part, a lower plastic part, a pole post and a riveting part, the pole post is sequentially arranged through the lower plastic part, the cover plate body, the upper plastic part and the riveting part and is riveted and connected with the riveting part, the lower plastic part, the cover plate body, the upper plastic part and the riveting part are all provided with a pole post hole to enable the pole post to be arranged through, a first anti-rotation assembly is arranged between the cover plate body and the upper plastic part, a second anti-rotation assembly is arranged between the upper plastic part and the riveting part, and the first anti-rotation assembly, the second anti-rotation assembly and the pole post hole are coaxially arranged.

[0008] Optionally, the first rotation-preventing assembly comprises a first limiting sunken platform and a first limiting boss, one of the first limiting sunken platform and the first limiting boss is arranged on the cover plate body, and the other is arranged on the upper plastic part, the first limiting sunken platform and the first limiting boss are connected in a clamping mode, and the first limiting sunken platform and the first limiting boss each have at least one limiting corner.

[0009] Optionally, the second rotation-preventing assembly comprises a second limiting sunken platform and a second limiting boss, one of the second limiting sunken platform and the second limiting boss is arranged on the upper plastic part, and the other is arranged on the riveting part, the second limiting sunken platform and the second limiting boss are connected in a clamping mode, and the second limiting sunken platform and the second limiting boss each have at least one limiting corner.

[0010] Optionally, the first limiting boss and the second limiting boss are arranged on opposite surfaces of the upper plastic part respectively, the first limiting sunken platform is arranged on the cover plate body, and the second limiting sunken platform is arranged on the riveting part.

[0011] Optionally, the first limiting boss and the second limiting sunken platform are arranged on opposite surfaces of the upper plastic part respectively, the first limiting sunken platform is arranged on the cover plate body, and the second limiting boss is arranged on the riveting part.

[0012] Optionally, the shape of the first limiting sunken platform, the shape of the first limiting boss, the shape of the second limiting sunken platform and the shape of the second limiting boss are any one of a polygonal shape and a broken line shape.

[0013] Optionally, the depth of the first limiting sunken platform is D1, the depth of the second limiting sunken platform is D2, 0.3mm≤D1≤1mm, and 0.3mm≤D2≤1mm.

[0014] Optionally, the height of the first limiting boss is H1, the height of the second limiting boss is H2, 0.3mm≤H1≤1mm, and 0.3mm≤H2≤1mm.

[0015] Optionally, the battery cover plate assembly further comprises a sealing part, the sealing part is arranged on the outer periphery of the pole and is abutted by the outer periphery wall of the pole and the hole wall of the pole hole of the cover plate body.

[0016] Another purpose of the utility model is to provide a single battery which can prevent rotation of the pole and has simple structure and large torque bearing.

[0017] To achieve the purpose, the utility model adopts the following technical scheme.

[0018] The single battery comprises the battery cover plate assembly in any one of the above-mentioned schemes.

[0019] The utility model discloses a beneficial effect:

[0020] The utility model provides a kind of battery cover plate assembly and single cell, first anti-rotation component is equipped between cover plate body and upper plastic part, second anti-rotation component is equipped between upper plastic part and riveting piece, so that cover plate body and upper plastic part between and upper plastic part and riveting piece between all have anti-rotation ability, to realize the anti-rotation effect of pole relative to cover plate body.And, first anti-rotation component, second anti-rotation component and pole hole are coaxially arranged, so that only need to set up simple one anti-rotation structure can realize the anti-rotation of both, so that the battery cover plate assembly increases structure is less, and first anti-rotation component and second anti-rotation component are coaxially arranged between, so that the overall thickness of this position increases, not only improves the structural strength of battery cover plate assembly for pole installation position, also improves the ability of the battery cover plate assembly to withstand torque, to further improve the anti-rotation effect of the battery cover plate assembly. BRIEF DESCRIPTION OF DRAWINGS

[0021] Figure 1 It is the partial explosion drawing of battery cover plate assembly provided by the utility model specific embodiment;

[0022] Figure 2 It is the axonometric drawing of upper plastic part one perspective provided by the utility model specific embodiment;

[0023] Figure 3 It is the axonometric drawing of upper plastic part another perspective provided by the utility model specific embodiment;

[0024] Figure 4 It is the axonometric drawing of riveting piece provided by the utility model specific embodiment.

[0025] In the drawing:

[0026] 1001, pole hole; 1002, limit angle;

[0027] 10, cover plate body; 20, upper plastic part; 30, lower plastic part; 40, pole; 50, riveting piece;

[0028] 61, first limit sunken platform; 62, first limit boss;

[0029] 71, second limit sunken platform; 72, second limit boss. DETAILED DESCRIPTION

[0030] The utility model will be further explained in detail in connection with the drawings and examples.It can be understood that the specific examples described here are only used to explain the utility model, not limit the utility model.In addition, it needs to be explained that, for convenient description, only relevant part in the drawing is shown instead of all structure.

[0031] In the description of the utility model, unless another definite provision and limitation, the term "link", "connection", "fix" should do broad sense understanding, for example, can be fixed connection, also can be detachable connection, or be integrated;Can be directly connected, also can be indirectly connected through the intermediate medium, can be two elements inside the communication or two elements of the interaction relationship.For the ordinary skilled in the art, the specific meaning of the above-mentioned terms in the utility model can be understood according to the specific circumstances.

[0032] In the utility model, unless another definite provision and limitation, the first feature is "on" or "under" the second feature can include the first and second features direct contact, also can include the first and second features are not direct contact but contact through the additional features between them.Moreover, the first feature is "on", "above" and "on" the second feature includes the first feature is directly above and obliquely above the second feature, or just indicates that the horizontal height of the first feature is higher than the second feature.The first feature is "under", "below" and "under" the second feature includes the first feature is directly below and obliquely below the second feature, or just indicates that the horizontal height of the first feature is less than the second feature.

[0033] In the description of the embodiment, the terms "on", "under", "left", "right", etc. Orientation or positional relationship is based on the orientation or positional relationship shown in the drawing, only for the convenience of description and simplification operation, and does not indicate or imply that the device or element referred to must have a particular orientation, be constructed and operated in a particular orientation, therefore cannot be understood as a limitation on the utility model.In addition, the terms "first", "second" are only used to distinguish in the description, and have no special meaning.

[0034] The following refers to Figures 1 to 4 The utility model provides a battery cover plate assembly and single cell.

[0035] Please refer to Figures 1 to 4 The utility model provides a battery cover plate assembly, it includes cover plate body 10, upper plastic piece 20, lower plastic piece 30, pole 40 and riveting piece 50, pole 40 is sealed in turn and is arranged in lower plastic piece 30, cover plate body 10, upper plastic piece 20 and riveting piece 50 and is connected with riveting piece 50 riveting, lower plastic piece 30, cover plate body 10, upper plastic piece 20 and riveting piece 50 all are set up with pole hole 1001, to make pole 40 pass through and set up;Cover plate body 10 and upper plastic piece 20 are equipped with the first anti-rotation assembly between, and upper plastic piece 20 and riveting piece 50 are equipped with the second anti-rotation assembly between, the first anti-rotation assembly, the second anti-rotation assembly and pole hole 1001 coaxial arrangement.

[0036] The battery cover plate assembly in the embodiment has the first anti-rotation assembly between the cover plate body 10 and the upper plastic part 20 and the second anti-rotation assembly between the upper plastic part 20 and the riveting part 50, so that the cover plate body 10 and the upper plastic part 20 and the riveting part 50 have the anti-rotation capability, thereby realizing the anti-rotation effect of the pole 40 relative to the cover plate body 10. The first anti-rotation assembly, the second anti-rotation assembly, and the pole hole 1001 are coaxially arranged, so that only one simple anti-rotation structure is needed to realize the anti-rotation of both, so that the battery cover plate assembly has less added structure, and the first anti-rotation assembly and the second anti-rotation assembly are coaxially arranged, so that the overall thickness at the position is increased, which not only improves the structural strength of the battery cover plate assembly at the installation position of the pole 40, but also improves the torque bearing capacity of the battery cover plate assembly, thereby further improving the anti-rotation effect of the battery cover plate assembly.

[0037] Please continue to refer to Figures 1 to 4 In the embodiment, the first anti-rotation assembly includes a first limiting sunken platform 61 and a first limiting boss 62, one of the first limiting sunken platform 61 and the first limiting boss 62 is arranged on the cover plate body 10, and the other is arranged on the upper plastic part 20, the first limiting sunken platform 61 and the first limiting boss 62 are connected in clamping, and the first limiting sunken platform 61 and the first limiting boss 62 each have at least one limiting corner 1002. The above structure can realize the anti-rotation capability of the first anti-rotation assembly between the cover plate body 10 and the upper plastic part 20, and the limiting corner 1002 is arranged, so that the first limiting boss 62 and the first limiting sunken platform 61 cooperate to produce a certain rotation effect on the upper plastic part 20, thereby having a certain anti-rotation function.

[0038] Further, the second anti-rotation assembly includes a second limiting sunken platform 71 and a second limiting boss 72, one of the second limiting sunken platform 71 and the second limiting boss 72 is arranged on the upper plastic part 20, and the other is arranged on the riveting part 50, the second limiting sunken platform 71 and the second limiting boss 72 are connected in clamping, and the second limiting sunken platform 71 and the second limiting boss 72 each have at least one limiting corner 1002. The above structure can realize the anti-rotation capability of the second anti-rotation assembly between the riveting part 50 and the upper plastic part 20, and the limiting corner 1002 is arranged, so that the first limiting boss 62 and the first limiting sunken platform 61 cooperate to produce a certain rotation effect on the riveting part 50, thereby having a certain anti-rotation function.

[0039] In an optional embodiment, the first limiting boss 62 and the second limiting boss 72 are respectively arranged on opposite surfaces of the upper plastic part 20, the first limiting sunken platform 61 is arranged on the cover plate body 10, and the second limiting sunken platform 71 is arranged on the riveting part 50. That is, the bosses are arranged on the upper plastic part 20, and this arrangement is because the upper plastic part 20 is injection molded, which has high production efficiency and good stability.

[0040] In another optional embodiment, the first limiting boss 62 and the second limiting boss 71 are arranged on the opposite sides of the upper plastic part 20, the first limiting boss 61 is arranged on the cover plate body 10, and the second limiting boss 72 is arranged on the riveting part 50. In this way, the first limiting boss 62 and the second limiting boss 71 of the upper plastic part 20 are matched, so that after the cover plate body 10, the upper plastic part 20, and the riveting part 50 are connected, the first limiting boss 61, the first limiting boss 62, the second limiting boss 71, and the second limiting boss 72 have a large overlapping area, thereby improving the anti-rotation effect between the three.

[0041] Optionally, the shape of the first limiting boss 61, the shape of the first limiting boss 62, the shape of the second limiting boss 71, and the shape of the second limiting boss 72 are any one of a polygon and a broken line. That is, the first limiting boss 61, the first limiting boss 62, the second limiting boss 71, and the second limiting boss 72 all have at least one limiting corner 1002, so as to have an anti-rotation function.

[0042] Optionally, the depth of the first limiting boss 61 is D1, the depth of the second limiting boss 71 is D2, 0.3mm≤D1≤1mm, and 0.3mm≤D2≤1mm. The setting of the depth not only improves the structural strength of the corresponding structure and has an anti-rotation function, but also does not cause the wall thickness of the corresponding structure to be too thin to deform during use, thereby improving the reliability of the anti-rotation structure in the battery cover plate assembly.

[0043] Optionally, the height of the first limiting boss 62 is H1, the height of the second limiting boss 72 is H2, 0.3mm≤H1≤1mm, and 0.3mm≤H2≤1mm. The setting of the height not only improves the structural strength of the corresponding structure and has an anti-rotation function, but also does not cause the wall thickness of the corresponding structure to be too thin to deform during use, thereby improving the reliability of the anti-rotation structure in the battery cover plate assembly.

[0044] In this embodiment, the battery cover plate assembly further comprises a sealing part arranged on the outer periphery of the pole 40 and tightly abutted by the outer wall of the pole 40 and the hole wall of the pole hole 1001 of the cover plate body 10, so as to realize the sealing of the pole 40 penetrating through the lower plastic part 30, the cover plate body 10, the upper plastic part 20, and the riveting part 50.

[0045] Further, the battery cover plate assembly further comprises an anti-explosion structure arranged on the cover plate body 10 to realize the anti-explosion and pressure relief effect on the single battery on which the battery cover plate assembly is installed.

[0046] Further, the battery cover plate assembly further comprises a liquid injection structure arranged on the cover plate body 10 to realize injection of electrolyte into a single battery to which the battery cover plate assembly is mounted.

[0047] The embodiment also provides a single battery comprising the battery cover plate assembly according to any one of the above-mentioned schemes. By using the battery cover plate assembly, the single battery has certain anti-rotation ability of the pole 40, thereby improving the safety of the single battery.

[0048] Obviously, the above-mentioned embodiments of the utility model are only examples for clearly explaining the utility model, and are not the limitation of the embodiments of the utility model. For ordinary skilled in the art, various obvious changes, re-adjustment and replacement can be made without departing from the protection scope of the utility model. Here, all the embodiments need not and cannot be exhausted. Any modification, equivalent replacement and improvement within the spirit and principle of the utility model should be included in the protection scope of the utility model claim.

Claims

1. A battery cover plate assembly, characterized by, The cover plate body (10), the upper plastic part (20), the lower plastic part (30), the pole (40) and the riveting part (50), the pole (40) is sequentially sealed and arranged in the lower plastic part (30), the cover plate body (10), the upper plastic part (20) and the riveting part (50) and is riveted with the riveting part (50), the lower plastic part (30), the cover plate body (10), the upper plastic part (20) and the riveting part (50) are all provided with a pole hole (1001) to enable the pole (40) to be arranged therein, a first anti-rotation assembly is arranged between the cover plate body (10) and the upper plastic part (20), a second anti-rotation assembly is arranged between the upper plastic part (20) and the riveting part (50), and the first anti-rotation assembly, the second anti-rotation assembly and the pole hole (1001) are coaxially arranged.

2. The battery cover plate assembly of claim 1, wherein, The first anti-rotation assembly comprises a first limiting sunken platform (61) and a first limiting boss (62), one of the first limiting sunken platform (61) and the first limiting boss (62) is arranged on the cover plate body (10), and the other is arranged on the upper plastic part (20), the first limiting sunken platform (61) and the first limiting boss (62) are connected in a clamping manner, and the first limiting sunken platform (61) and the first limiting boss (62) are both provided with at least one limiting corner (1002).

3. The battery cover plate assembly of claim 2, wherein, The second anti-rotation assembly comprises a second limiting sunken platform (71) and a second limiting boss (72), one of the second limiting sunken platform (71) and the second limiting boss (72) is arranged on the upper plastic part (20), and the other is arranged on the riveting part (50), the second limiting sunken platform (71) and the second limiting boss (72) are connected in a clamping manner, and the second limiting sunken platform (71) and the second limiting boss (72) are both provided with at least one limiting corner (1002).

4. The battery cover plate assembly of claim 3, wherein, The first limiting boss (62) and the second limiting boss (72) are arranged on opposite surfaces of the upper plastic part (20) respectively, the first limiting sunken platform (61) is arranged on the cover plate body (10), and the second limiting sunken platform (71) is arranged on the riveting part (50).

5. The battery cover plate assembly of claim 3, wherein, The first limiting boss (62) and the second limiting sunken platform (71) are arranged on opposite surfaces of the upper plastic part (20) respectively, the first limiting sunken platform (61) is arranged on the cover plate body (10), and the second limiting boss (72) is arranged on the riveting part (50).

6. The battery cover plate assembly of any one of claims 3-5, wherein, The shape of the first limiting sunken platform (61), the shape of the first limiting boss (62), the shape of the second limiting sunken platform (71) and the shape of the second limiting boss (72) are any one of a polygon and a broken line.

7. The battery cover plate assembly of any one of claims 3-5, wherein, The depth of the first limiting sunken platform (61) is D1, the depth of the second limiting sunken platform (71) is D2, 0.3mm≤D1≤1mm, and 0.3mm≤D2≤1mm.

8. The battery cover plate assembly of claim 7, wherein, The height of the first limiting boss (62) is H1, the height of the second limiting boss (72) is H2, 0.3mm≤H1≤1mm, 0.3mm≤H2≤1mm.

9. The battery cover plate assembly of claim 1, wherein, The battery cover plate assembly further comprises a sealing piece arranged at the outer periphery of the pole post (40) and abutting against the outer wall of the pole post (40) and the hole wall of the pole post hole (1001) of the cover plate body (10).

10. A single cell characterized by A battery cover plate assembly comprising any one of claims 1-9.

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