US 12,107,301 B1
End cover assembly, energy storage device, and electric apparatus
Hepan Xiao, Guangdong (CN); and Jiben Tan, Guangdong (CN)
Assigned to SHENZHEN HITHIUM ENERGY STORAGE TECHNOLOGY CO., LTD, Guangdong (CN); and XIAMEN HITHIUM ENERGY STORAGE TECHNOLOGY CO., LTD., Fujian (CN)
Filed by SHENZHEN HITHIUM ENERGY STORAGE TECHNOLOGY CO., LTD, Guangdong (CN); and XIAMEN HITHIUM ENERGY STORAGE TECHNOLOGY CO., LTD., Fujian (CN)
Filed on Mar. 20, 2024, as Appl. No. 18/610,274.
Claims priority of application No. 202310673750.4 (CN), filed on Jun. 8, 2023.
Int. Cl. H01M 50/567 (2021.01); H01M 50/15 (2021.01)
CPC H01M 50/567 (2021.01) [H01M 50/15 (2021.01)] 6 Claims
OG exemplary drawing
 
1. An end cover assembly, comprising:
a cover plate having a first through hole;
a pole comprising a pole body, the pole body passing through the first through hole and provided with a first thread at an outer peripheral surface of the pole body;
an insulator provided on the cover plate and having a second through hole, the second through hole having a hole wall provided with a second thread, the pole body passing through the second through hole, and the first thread being connected to the second thread;
an anti-loosening structure comprising a first anti-loosening portion and a second anti-loosening portion that are engaged and connected with each other to prevent the insulator from loosening, wherein:
the first anti-loosening portion is disposed at the outer peripheral surface of the pole body, and the second anti-loosening portion is disposed at the hole wall of the second through hole;
the first anti-loosening portion comprises one of a groove and a protrusion, and the second anti-loosening portion comprises another one of the groove and the protrusion, the protrusion extending in a radial direction of the pole body and being at least partially located in the groove to prevent the insulator from loosening;
the first anti-loosening portion is disposed at a top peripheral edge of the pole body, and the first thread is located below the first anti-loosening portion;
the second anti-loosening portion is disposed at a top peripheral edge of the second through hole, and the second thread is located below the second anti-loosening portion;
the insulator has two operating holes, the end cover assembly being configured to allow a tool to be inserted into the two operating holes to deform outwards the insulator, separating the protrusion from the groove.