Patent ID: 8748019

Claim:
A car power source apparatus comprising: a battery block including a plurality of battery cells connected in series or in parallel; a pair of endplates disposed at the ends of the battery block; and connecting components connected to the pair of endplates, wherein each of the battery cells comprises: a case including an external case formed in a rectangular outline with a pair of opposing planar surfaces and a sealing plate attached to the opposing planar surfaces; an electrode terminal mounted on the sealing plate; an electrode unit housed in the case; and a current interrupt device housed in the case, the current interrupt device being configured to be electrically connected between the electrode terminal and the electrode unit, wherein the current interrupt device comprises a deformable member that is deformable to disconnect an electrical connection between the electrode terminal and the electrode unit when internal pressure of the battery cell exceeds a set pressure, wherein the plurality of battery cells is held in a stacked configuration with the opposing planar surfaces opposing each other to form the battery block, the plurality of battery cells being held in the stacked configuration with pressure in a direction perpendicular to the opposing planar surfaces by the pair of endplates via the connecting components, wherein the electrode unit is disposed between the opposing planar surfaces of the external case so that the electrode unit is pressed with a restoring force by inside surfaces of the opposing planar surfaces so as to prevent vibration, and wherein the current interrupt device is secured to both the electrode unit and the electrode terminal mounted on the sealing plate.