Sealed battery and battery pack

摘要

A sealed battery ( 100 ) includes a power generation element ( 120 ), a battery case ( 110 ), and an external positive terminal ( 150 ) fixed to a first case wall ( 110 a). Case side faces ( 110 c , 110 d) serve as external negative electrode portions providing an electrical connection to a negative electrode of the power generation element ( 120 ). The external positive terminal ( 150 ) has extended joint portions ( 155 ) extending in a direction perpendicular to the first case wall ( 110 a). The extended joint portions ( 155 ) are laid to overlap from outside with and connected to the external negative electrode portions when the external positive terminal ( 150 ) of the sealed battery ( 100 ) is brought into contact with a second case wall ( 110 b) of another sealed battery ( 100 ).