Patent ID: 8507121

Claim:
A power supply device comprising: a battery module including a plurality of batteries arranged side-by-side, and a plurality of separators arranged between adjacent ones of the batteries, respectively; a first end plate arranged on a first end of the battery module; a second end plate arranged on a second end of the battery module; a cooling mechanism that cools the batteries; a thermally-insulating member arranged on or over a part of a surface of the battery module, the thermally-insulating member thermally insulates heat generated from at least one of the batteries; and an accommodation case that accommodates the battery module and has inlet and outlet ports, wherein the separators and the end plates form cooling paths on sides thereof that face the batteries, respectively, wherein each of the cooling paths is formed to allow coolant to pass therethrough by the cooling mechanism, wherein the thermally-insulating member is positioned so as to extend over two or more of the cooling paths which are arranged in a stacking direction of the batteries so that each of the cooling paths covered by the thermally-insulating member is at least partially blocked, and wherein the cooling mechanism is arranged to pass the coolant through the inlet and outlet ports, and the thermally-insulating member is disposed on or above at least one of the batteries located in proximity to the inlet port.