CN-122025945-A - Cover plate assembly with anti-rotation structure and power battery

Abstract

The invention discloses a cover plate assembly with an anti-rotation structure and a power battery, and relates to the field of power batteries, wherein the cover plate assembly comprises a pole and a light cover plate, the light cover plate is provided with a mounting groove, plastic is wrapped on the outer side of the pole, an anti-rotation column is arranged on the bottom surface of the upper plastic, and an anti-rotation groove matched with the anti-rotation column is arranged in the mounting groove; the anti-torsion ribs are arranged on the side face of the upper plastic, and can be attached to the inner wall of the mounting groove. The anti-rotation structure is designed between the upper plastic and the optical cover plate to fix the pole and the optical cover plate, so that the assembly can be realized, the pole can be prevented from rotating, and the usability of the cover plate assembly is ensured.

Inventors

• ZHU HAILI
• JI JINCHAO
• CHEN KUN
• LI YANG
• HAN YANG

Assignees

• 安徽得壹能源科技有限公司

Dates

Publication Date

20260512

Application Date

20260106

Claims (10)

1. 1. The cover plate assembly with the anti-rotation structure is characterized by comprising a pole column and a light cover plate, wherein an installation groove is formed in the light cover plate, an upper plastic is wrapped on the outer side of the pole column, an anti-rotation column is arranged on the bottom surface of the upper plastic, an anti-rotation groove matched with the anti-rotation column is formed in the installation groove, anti-rotation ribs are arranged on the side surface of the upper plastic, and the anti-rotation ribs can be attached to the inner wall of the installation groove.
2. 2. The cover plate assembly with the anti-rotation structure according to claim 1, wherein the upper plastic is provided with two anti-rotation posts, and the two anti-rotation posts are diagonally arranged.
3. 3. The cover plate assembly with the anti-rotation structure according to claim 1, wherein the anti-rotation ribs are arranged on at least two symmetrical side surfaces of the upper plastic, and at least two anti-rotation ribs are arranged on each side surface.
4. 4. A cover plate assembly with anti-rotation structure according to claim 1 or 2, wherein the anti-rotation post has a polygonal cross section.
5. 5. The cover plate assembly with anti-rotation structure according to claim 4, wherein the cross section of the anti-rotation column is in a cross-shaped or hexagonal structure.
6. 6. A cover plate assembly with an anti-rotation structure according to claim 1 or 3, wherein the anti-rotation ribs are of a diagonal rib structure, so that the cross section of the anti-rotation ribs is gradually reduced from top to bottom.
7. 7. The cover plate assembly with the anti-rotation structure according to claim 1, wherein the lower plastic is arranged on the lower side of the optical cover plate, and the pole, the optical cover plate and the lower plastic are all sleeved on the outer side of the conductive pole.
8. 8. The cover assembly with anti-rotation structure of claim 7, wherein the mating surface of the conductive post is fitted with a sealing ring.
9. 9. The cover assembly with anti-rotation structure of claim 1, wherein the light cover plate is equipped with an anti-explosion valve.
10. 10. A power cell comprising a cover assembly as claimed in any one of claims 1 to 9.

Description

Cover plate assembly with anti-rotation structure and power battery Technical Field The invention relates to the field of power batteries, in particular to a cover plate assembly with an anti-rotation structure and a power battery. Background The new energy is rapidly developed, the application of the power battery is more and more extensive, the extremely safety performance of the battery cell is closely related to the safety of the whole vehicle and consumers along with the proposal of the extremely performance, extremely safety and extremely cost concepts, and the safety performance of the cover plate component serving as a key component of a battery cell structural member is very important. At present, the cover plate component is of a riveting structure, the sealing ring is compressed through the optical cover plate, the upper plastic and the pole, but because of machining tolerance, assembly tolerance or unreasonable design of parts, a gap is necessarily formed between the upper plastic and the optical cover plate, the gap is a rotatable space of the pole, and after the pole is welded and loaded, the sealing ring and the inner pole lug are damaged due to the influence of factors such as impact, vibration and the like in a long term under the influence of actual road conditions, so that the service life and the safety of the battery core are greatly adversely affected. For the cover plate assembly, some anti-rotation designs are carried out in the prior art, for example, the prior art discloses a cover plate assembly, insulation is carried out between a conductive column and an outer welding ring through upper plastic, the periphery side of the upper plastic is matched with the outer welding ring in a clamping manner to realize anti-rotation, in the scheme, an anti-rotation boss at the top of the upper plastic is clamped with an anti-rotation groove at the inner side of the outer welding ring, and then the anti-rotation structure is welded and fixed with an optical cover plate through the outer welding ring, and depends on an intermediate part, namely the outer welding ring, so that the anti-rotation effect is easily influenced by the quality of the outer welding ring. Disclosure of Invention Aiming at the defects in the prior art, the invention aims to provide a cover plate assembly with an anti-rotation structure and a power battery, wherein the anti-rotation structure is designed between upper plastic and an optical cover plate to fix a pole and the optical cover plate, so that the assembly can be realized, the pole can be prevented from rotating, and the service performance of the cover plate assembly is ensured. In order to achieve the above object, the present invention is realized by the following technical scheme: in a first aspect, an embodiment of the invention provides a cover plate assembly with an anti-rotation structure, which comprises a pole and a light cover plate, wherein a mounting groove is formed in the light cover plate, an upper plastic is wrapped on the outer side of the pole, an anti-rotation column is arranged on the bottom surface of the upper plastic, an anti-rotation groove matched with the anti-rotation column is formed in the mounting groove, anti-rotation ribs are arranged on the side surface of the upper plastic, and the anti-rotation ribs can be attached to the inner wall of the mounting groove. As a further implementation manner, the upper plastic is provided with two anti-torsion columns, and the two anti-torsion columns are diagonally arranged. As a further implementation mode, the anti-torsion ribs are at least arranged on two symmetrical side faces of the upper plastic, and each side face is provided with at least two anti-torsion ribs. As a further implementation manner, the cross section of the anti-torsion column is of a polygonal structure. As a further implementation manner, the cross section of the anti-torsion column is of a cross-shaped or hexagonal structure. As a further implementation mode, the anti-torsion rib is of an inclined rib structure, so that the section of the anti-torsion rib is gradually reduced from top to bottom. As a further implementation mode, the lower plastic is arranged on the lower side of the optical cover plate, and the pole, the optical cover plate and the lower plastic are all sleeved on the outer side of the conductive column. As a further implementation manner, a sealing ring is installed on the matching surface of the conductive column. As a further implementation, the optical cover plate is provided with an explosion-proof valve. In a second aspect, embodiments of the present invention also provide a power cell including the cover assembly. The beneficial effects of the invention are as follows: (1) The cover plate assembly comprises a pole and a light cover plate, wherein the light cover plate is provided with a mounting groove, the bottom surface of an upper plastic on the outer side of the pole is provided with an anti-to