Patent ID: 11962042
Assignee: CONTEMPORARY AMPEREX TECHNOLOGY CO., LIMITED
Field: Electrical machinery, apparatus, energy (Electrical engineering)
Classification: CPC H  Y | IPC H

Claim 0:
1. A battery cell, comprising:
a casing provided with an opening;
an electrode assembly, accommodated in the casing and comprising a tab portion;
an end cover assembly, comprising an end cover to cover the opening and an electrode terminal mounted on the end cover, the end cover being provided with a first through hole; and
a current collector to electrically connect the electrode terminal and the tab portion, wherein the current collector comprises a first connecting portion for connecting the tab portion, and projection of a connecting region of the first connecting portion and the tab portion in a thickness direction of the end cover at least partially overlaps with projection of the first through hole in the thickness direction,
wherein projection of the electrode terminal in the thickness direction does not overlap with the projection of the first through hole in the thickness direction,
the end cover assembly comprises a third insulator arranged at one side, facing the electrode assembly, of the end cover, the first connecting portion is located between the third insulator and the tab portion, and
the third insulator is provided with a second through hole, and the projection of the connecting region in the thickness direction at least partially overlaps with projection of the second through hole in the thickness direction.