Rechargeable battery

摘要

A rechargeable battery includes an electrode assembly including a positive electrode, a negative electrode, and a separator therebetween; a case that has an opening that houses the electrode assembly; a cap assembly including a cap plate that covers the opening of the case; and an electrode terminal that is electrically connected to the electrode assembly and protrudes through the cap plate to the outside of the case. The electrode terminal includes a lower terminal plate that is connected to the electrode assembly, an upper terminal plate that covers an upper part of the lower terminal plate, and a terminal fastener that is housed in a space between the lower terminal plate and the upper terminal plate that protrudes through an upper surface of the upper terminal plate.

主权项

1. A rechargeable battery comprising:
a case; an electrode assembly in the case; a cap plate covering an opening of the case; and an electrode terminal comprising:
a first terminal plate on the cap plate and electrically coupled to the electrode assembly;a second terminal plate electrically coupled to the electrode assembly via the first terminal plate, the second terminal plate having an opening therethrough;a terminal fastener located between the first and second terminal plates and comprising a fastening portion protruding through the opening in the second terminal plate, the terminal fastener comprising a first material different from a second material of the first and second terminal plates, the first material having a greater strength than the second material, wherein the terminal fastener is configured to be coupled to an external element; anda connection plate between the cap plate and the first terminal plate, the connection plate electrically coupling the first terminal plate to the electrode assembly.