CAP ASSEMBLY OF POWER BATTERY

摘要

A cap assembly of a power battery comprises: a cap plate, a first electrode terminal provided to the cap plate, a second electrode terminal provided to the cap plate and electrically insulated from the cap plate, and a resistance member electrically connected to the cap plate and the first electrode terminal. The resistance member comprises: a heat-resistant insulating base body positioned between the cap plate and the first electrode terminal; and a heat-resistant metal layer provided to the heat-resistant insulating base body. The heat-resistant metal layer and the cap plate and the first electrode terminal are electrically connected to form a conductive path, the conductive path passes along the heat-resistant insulating base body positioned between the cap plate and the first electrode terminal. The formed conductive path is a curved path, therefore the resistance value of the resistance member can be controlled by controlling the conductive path.

主权项

1. A cap assembly of a power battery, comprising:
a cap plate; a first electrode terminal provided to the cap plate; a second electrode terminal provided to the cap plate and electrically insulated from the cap plate; and a resistance member electrically connected to the cap plate and the first electrode terminal; the resistance member comprising: a heat-resistant insulating base body positioned between the cap plate and the first electrode terminal; and a heat-resistant metal layer provided to the heat-resistant insulating base body; the heat-resistant metal layer, the cap plate and the first electrode terminal being electrically connected to form a conductive path, the conductive path passing along the heat-resistant insulating base body positioned between the cap plate and the first electrode terminal.