Patent ID: 8426079

Claim:
A car power source apparatus comprising: a high voltage battery having a plurality of battery cells connected in series or in parallel, each of the battery cells having a case, a current interrupt device housed in the case, and an electrode terminal connected to the current interrupt device, the current interrupt device being deformable to separate a connection point and cut-off current when internal pressure of the battery cell exceeds a set pressure, and wherein: each of the cases has a rectangular outline with a pair of opposing planar surfaces, and an electrode unit, which is a stack of positive and negative electrode plates with intervening separators, the current interrupt device is disposed between the pair of opposing planar surfaces, the plurality of battery cells is stacked with opposing planar surfaces opposite each other to form a battery block, a pair of endplates is disposed at the ends of the battery block, the pair of endplates is connected by connecting components, and the pair of endplates holds the battery cells in the stacked configuration so as to apply pressure in a direction perpendicular to the opposing planar surfaces, and the electrode unit is disposed inside the opposing planar surfaces of the case so that the electrode unit is pressed with a restoring force by inside surfaces of the opposing planar surfaces of the case so that the electrode unit and the current interrupt device are held in the case in a stationary manner so as to prevent vibration.