Seal type storage battery

• Main Authors: Okumura, Nobuhito, Nishimura, Satoru, Tamagawa, Takuya, Kakiuchi, Hisashi, Katayama, Hiroki, Inoue, Hiroyuki, Fujisaka, Etsuya
• Format: Patent
• Language: English
• Published: 26.08.2003

This invention relates to a seal type storage battery such as a nickel-cadmium storage battery, a nickel metal hydride type storage battery or the like, in particular, an improve seal type storage battery having a pressure detector for detecting inner pressure of the battery. A seal type storage battery has a battery case which has a sealing assembly for sealing an opened portion of an outer case, which holds an electricity generating element. The sealing assembly includes a pressure-sensitive conductive rubber member in the battery case. The pressure-sensitive conductive rubber member has a resistance that changes continuously depending on a rise of inner pressure in the battery case. A lead connecting with the, pressure-sensitive conductive rubber extends outside of the battery case, and the lead is capable of outputting a pressure detecting signal to outside.