| 摘要 |
A secondary battery (100) includes a case (110); an electrode assembly (120) accommodated in the case, and including a first electrode plate, a second electrode plate, and a separator between the first and second electrode plates; a first terminal portion (130) electrically connected to the electrode assembly; and a cap plate (150) configured to cover an opening of the case, wherein: the first terminal portion (130) includes a first electrode terminal (132) passing through the cap plate to protrude upward from a first position of the cap plate, and a first current collector (134) including a first end connected to the first electrode terminal, and a second end connected to the first electrode plate, the first current collector (134) including a plurality of notches (1346). Said notches (1346) allows the first current collector (134) to better absorb and mitigate external shocks, thus providing a battery with improved safety and reliability. |
