| 摘要 |
The present invention relates to a secondary battery for rapidly reducing the inner temperature of a can and easily discharging a gas generated from the inner part of the can at the same time. According to one embodiment, the secondary battery includes an electrode assembly; a can receiving the electrode assembly; a cap assembly having a can up. The can up includes a base plate, a terminal part formed in the center of the can up and protruding from the upper part of the base plate, and a connection part of connecting the base plate and the terminal part. A trench-shaped safety bent is formed in the base plate. |
