| 摘要 |
PURPOSE: A secondary battery is provided to easily detect the leakage of electrolyte by being equipped with an identification type in a sealing part of a case. CONSTITUTION: A secondary battery(100) comprises: an electrode assembly(110), a case(120) accepting the electrode assembly and electrolyte, and an identification tape(150,151,152) of which color is varied according to the reaction with the electrolyte, arranged in the case. The identification tape comprises a base film, an adhesive material arranged on one side of the base film, and photochromic material arranged on the side of the base film. The identification tape is arranged to correspond with a sealing part(124) in the case. The adhesive material and the photochromic material are arranged between the base film and the case. |
