Patent ID: 9608252
Date: 2017-03-28
CPC Classifications: H01M,Y02E,Y02P

Claim:
1. A secondary battery comprising: an electrode assembly comprising a first electrode plate, a second electrode plate, and a separator between the first and second electrode plates; a case accommodating the electrode assembly; a cap plate coupled to the case; a first terminal and a second terminal each comprising a flat shape and each coupled to the cap plate, wherein the first terminal comprises a first terminal plate electrically coupled to the first electrode plate and further comprises a first material and wherein a first collector is integral as a single component with the first terminal plate and penetrates through the cap plate, and wherein the second terminal comprises a second terminal plate electrically coupled to the second electrode plate and further comprises a first part comprising a second material different from the first material, and a second part integral with the first part and comprising the first material; and a first insulator directly contacting the first terminal plate and the cap plate and defining a first gap directly between the first insulator and the first terminal plate.