STORAGE BATTERY WITH A STACK OF BATTERY CELLS

摘要

PURPOSE: A storage battery with a stack of battery cells is provided to enable the easy assembling of an aluminum case which surrounds the battery cells and a heat sink. CONSTITUTION: A storage battery with a stack of battery cells has a plurality of battery cells(20) which is laminated and is surrounded by an aluminum case(10). A heat sink(30) is surface-contacted with the aluminum case. A coupling groove(31) is laminated in the battery cell direction in the part of the heat sink where the aluminum case is surface-contacted. A bent part(11), which is bent to a shape corresponding to the coupling groove and is surface-contacted with a coupling groove, is formed in the end part where the heat sink is surface-contacted.