To prevent explosion of a rechargeable battery under a state through comparatively simple constitution, in which an electrolyte is not ejected, at a low cost.
This rechargeable battery using the pressure breaking protective device has an internal electrode plate 120, wound helically on a positive electrode plate and a negative electrode plate through separators, a housing section H composed of a sheathed can 110, in which the internal electrode plate 120 is housed and an opening/closing body 140 closing the opening of the sheathed can 110, a positive electrode (or the negative electrode) output electrode 130 electrically connected to the internal electrode plate 120, a spacer 200 installed underside the opening/closing body 140 and insulating the opening/closing body 140 and the internal electrode plate 120, the pressure breaking protective device A1 as a pressure sensitive element mounted on the spacer 200 and detecting internal pressure in the housing section H and an output terminal 400 connected electrically to a terminal section on one side of the pressure breaking protective device A1 and electrically extracting the detection result of internal pressure detected by the pressure breaking protective device A1 to the outside. A terminal section on the other side of the protective device A1 is connected electrically to a positive electrode (or a negative electrode) output electrode 130.
TAKEHARA NAOYA
MINE KEIJI
HIRAI SEISAKU
