US 12,463,297 B2
Secondary battery, battery module, and device using battery as power supply
Lulu Bai, Ningde (CN)
Assigned to CONTEMPORARY AMPEREX TECHNOLOGY (HONG KONG) LIMITED, Hong Kong (CN)
Filed by CONTEMPORARY AMPEREX TECHNOLOGY (HONG KONG) LIMITED, Hong Kong (CN)
Filed on Mar. 24, 2022, as Appl. No. 17/702,908.
Application 17/702,908 is a continuation of application No. PCT/CN2020/139185, filed on Dec. 24, 2020.
Claims priority of application No. 202010054531.4 (CN), filed on Jan. 17, 2020.
Prior Publication US 2022/0216574 A1, Jul. 7, 2022
Int. Cl. H01M 50/533 (2021.01); H01M 50/147 (2021.01); H01M 50/172 (2021.01); H01M 50/209 (2021.01); H01M 50/528 (2021.01)
CPC H01M 50/533 (2021.01) [H01M 50/147 (2021.01); H01M 50/172 (2021.01); H01M 50/209 (2021.01); H01M 50/528 (2021.01); H01M 2220/20 (2013.01)] 12 Claims
OG exemplary drawing
 
1. A secondary battery, comprising:
a cap plate and a housing:
electrode terminals, disposed on the cap plate; and
an electrode assembly accommodated in the housing, the electrode assembly comprising a main body and a plurality of tabs extending from the main body,
wherein each tab comprises a connection portion and a bend portion, the connection portion is electrically connected to one of the electrode terminals, and the bend portion is bent against the connection portion and is connected between the connection portion and the main body;
wherein a first insulation member is disposed at a side of each tab that is of the connection portion and that is away from the cap plate, the first insulation member comprises a first insulator, a second insulator, and a third insulator;
the first insulator is connected to the connection portion,
the second insulator is connected to the main body, and
the third insulator is connected between the first insulator and the second insulator;
wherein at least a part of the bend portion is covered by the third insulator and not fixed to the third insulator;
wherein the third insulator comprises a first part and a second part, and the first part is connected between the first insulator and the second part; and
the first part is fixed to the bend portion, and the second part covers a part of the bend portion and is not fixed to the bend portion.