SECONDARY BATTERY INCLUDING CAP PLATE WITH IMPROVED SEALING ABILITY

Abstract: a secondary battery is disclosed. the secondary battery includes an electrode assembly, a case including an opening for insertion of the electrode assembly, and a cap plate including a bonding area welded to the case and closing the opening. the bonding area may include one or more support surfaces in contact with and supported by the case; and one or more chambers formed with a portion of the bonding area spaced apart from the case by the support surface.

Inventor(s): Won Tae HEO, Soo Min PARK, Hyung Ju PAIK, Hae Ryong JEON, Hoemin CHEONG, Yoon Sun LEE

CPC Classification: H01M50/169 (by welding, brazing or soldering)

Search for rejections for patent application number 20250219211