To provide a secondary battery having a structure improved in impact resistance and vibration resistance in a vehicular secondary battery structure horizontally loading a large-sized battery element.
The secondary battery includes: the battery element having nonaqueous electrolytic solution; a positive electrode current collecting foil and a negative electrode current collecting foil led out from both ends of the battery element; a positive electrode lead plate and a negative electrode lead plate respectively connecting the current collecting foils to a positive electrode terminal and a negative electrode terminal; and a battery case to house the battery element, the current collecting foil, and the lead plates. At both side faces of the battery element, elastic members are respectively installed between the battery element and a wall face of the longitudinal direction of the battery case. One of the elastic members is integrated with the positive electrode lead plate and forms a complex and the other of the elastic members is integrated with the negative electrode lead plate and forms a complex.
FUJINO TAKESHI
KOMAZAWA EISUKE
NOGUCHI MINORU
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