CN-224232901-U - Cover plate structure, battery shell and battery

CN224232901UCN 224232901 UCN224232901 UCN 224232901UCN-224232901-U

Abstract

The utility model belongs to the technical field of batteries, and particularly relates to a cover plate structure, a battery shell and a battery, wherein the cover plate structure comprises a cover plate body and a sealing assembly mechanism, a liquid injection hole is formed in the cover plate body, a limiting groove is further formed in the cover plate body, the sealing assembly mechanism comprises a sealing part, a connecting part and a limiting part, the sealing part is connected to the inside of the liquid injection hole, the connecting part is connected to one side end, far away from the liquid injection hole, of the sealing part, the limiting part is connected to the connecting part, and the limiting part is detachably connected to the inside of the limiting groove. The utility model can ensure the sealing performance of the liquid injection hole, and can realize the function of quick opening of the liquid injection hole, thereby improving the safety, convenience and stability of use.

Inventors

CAO PENGFEI
CHEN HUANG
ZHONG XIN
LI XIONGCHENG

Assignees

湖南钠方新能源科技有限责任公司
湖南立方新能源科技有限责任公司

Dates

Publication Date: 20260512
Application Date: 20250324

Claims (10)

1. The cover plate structure is characterized by comprising a cover plate body and a seal assembly mechanism; The cover plate body is provided with a liquid injection hole and a limit groove; The sealing assembly mechanism comprises a sealing part, a connecting part and a limiting part, wherein the sealing part is connected to the inside of the liquid injection hole, the connecting part is connected to one side end, far away from the liquid injection hole, of the sealing part, the limiting part is connected to the connecting part, and the limiting part is detachably connected to the inside of the limiting groove.
2. The cover plate structure of claim 1, wherein a clamping groove is further formed in the cover plate body, the clamping groove is communicated with the limiting groove, and the limiting component is detachably connected to the clamping groove.
3. The cover plate structure of claim 2, wherein the limiting component comprises a pressing component, a pushing component and a buckling component, the pressing component is arranged in the limiting groove, one end of the pressing component is connected with the connecting component, the other end of the pressing component is movably connected with the pushing component, and the pushing component is movably connected with the buckling component so that the buckling component can be detachably connected with the clamping groove.
4. The cover plate structure of claim 3, wherein the pressing assembly comprises a first elastic piece and a pressing plate, wherein one end of the first elastic piece is connected with the connecting part, the other end of the first elastic piece is connected with the pressing plate, and the pressing plate is movably connected with one end of the pushing assembly; The pushing assembly comprises a pushing plate, a rotating connecting shaft and a mounting plate, the mounting plate is movably connected to the bottom of the pressing assembly, the rotating connecting shaft is connected to the mounting plate, the middle of the pushing plate is movably connected to the outer side surface of the rotating connecting shaft, one end of the pushing plate is abutted to the bottom of the pressing assembly, and the other end of the pushing plate is abutted to the buckling assembly.
5. The cover plate structure of claim 4, wherein a third elastic member is provided between the bottom of the pressing plate and the mounting plate.
6. The cover plate structure according to claim 4 or 5, wherein the fastening component comprises a clamping block, a second elastic piece and a connecting block, the connecting block is connected to the bottom of the pushing component, one end of the second elastic piece is connected to one side surface of the clamping block, one side surface of the clamping block is movably connected with the pushing component, and the other side surface of the clamping block, far away from the second elastic piece, is detachably connected to the clamping groove.
7. The cover plate structure according to claim 1, wherein the connecting member includes a connecting plate, the connecting plate is connected to a side end of the sealing member away from the liquid injection hole, and a projection of the connecting plate toward the liquid injection hole covers the liquid injection hole.
8. The cover plate structure of claim 1, wherein a sealing groove is further formed in the cover plate body, the sealing groove is communicated with the limiting groove, sealant is arranged in the sealing groove, and the sealant is connected to the connecting component.
9. A battery case characterized by comprising the cover plate structure according to any one of claims 1 to 8.
10. A battery comprising the battery case according to claim 9.

Description

Cover plate structure, battery shell and battery Technical Field The utility model belongs to the technical field of batteries, and particularly relates to a cover plate structure, a battery shell and a battery. Background The lithium ion battery has the advantages of higher specific energy, no pollution, no memory effect and the like, and is widely applied to the fields of electronic communication, energy storage equipment, electric automobiles, aerospace and the like. The electrolyte is used as a medium for lithium ion migration and charge transfer, is an indispensable important component of the lithium ion battery, is injected into the lithium ion battery, is a key step in the production process of the lithium ion battery, and can cause the attenuation of the performance of the battery core due to high cycle requirements of the lithium ion battery, electrolyte consumption and irreversible lithium release. However, most of the existing lithium ion battery cases are sealed by sealing nails through laser welding, and the mode is followed by the operation of disassembling and supplementing liquid and supplementing lithium, so that the use persistence and service life of the lithium ion battery cases are affected. Disclosure of utility model The utility model aims to provide a cover plate structure, a battery shell and a battery, aiming at the defects of the prior art, and can solve the technical problem that the assembly mode of a liquid injection hole in the prior art cannot be disassembled. In order to achieve the above purpose, the present utility model adopts the following technical scheme: A cover plate structure comprises a cover plate body and a seal assembly mechanism; The cover plate body is provided with a liquid injection hole and a limit groove; The sealing assembly mechanism comprises a sealing part, a connecting part and a limiting part, wherein the sealing part is connected to the inside of the liquid injection hole, the connecting part is connected to one side end, far away from the liquid injection hole, of the sealing part, the limiting part is connected to the connecting part, and the limiting part is detachably connected to the inside of the limiting groove. Preferably, a clamping groove is further formed in the cover plate body, the clamping groove is communicated with the limiting groove, and the limiting component is detachably connected to the clamping groove. The limiting component comprises a pressing component, a pushing component and a buckling component, wherein the pressing component is arranged in the limiting groove, one end of the pressing component is connected with the connecting component, the other end of the pressing component is movably connected with the pushing component, and the pushing component is movably connected with the buckling component so that the buckling component can be detachably connected with the clamping groove. Preferably, the pressing assembly comprises a first elastic piece and a pressing plate, wherein one end of the first elastic piece is connected with the connecting part, the other end of the first elastic piece is connected with the pressing plate, and the pressing plate is movably connected with one end of the pushing assembly; The pushing assembly comprises a pushing plate, a rotating connecting shaft and a mounting plate, the mounting plate is movably connected to the bottom of the pressing assembly, the rotating connecting shaft is connected to the mounting plate, the middle of the pushing plate is movably connected to the outer side surface of the rotating connecting shaft, one end of the pushing plate is abutted to the bottom of the pressing assembly, and the other end of the pushing plate is abutted to the buckling assembly. Preferably, a third elastic piece is arranged between the bottom of the pressing plate and the mounting plate. Preferably, the buckling component comprises a clamping block, a second elastic piece and a connecting block, wherein the connecting block is connected to the bottom of the pushing component, one end of the second elastic piece is connected to one side surface of the clamping block, one side surface of the clamping block is movably connected with the pushing component, and the other side surface, far away from the second elastic piece, of the clamping block is detachably connected to the clamping groove. Preferably, the connecting part comprises a connecting plate, the connecting plate is connected to one side end of the sealing part, which is far away from the liquid injection hole, and the projection of the connecting plate towards the liquid injection hole covers the liquid injection hole. Preferably, the cover plate body is further provided with a sealing groove, the sealing groove is communicated with the limiting groove, sealant is arranged in the sealing groove, and the sealant is connected to the connecting component. The utility model also discloses a battery shell, which comprises the cover plate