ELECTRICITY ACCUMULATION UNIT

PROBLEM TO BE SOLVED: To provide an electricity accumulation unit securing cooling of an accumulator module. SOLUTION: The electricity accumulation unit 10 is provided with: a storing case 13 which can store the accumulator module formed by having a plurality of storage cells lined up; an outside reservoir 11 with a smaller width in the direction of lining up of the storage cells than the width of the storing case 13, holding air to be supplied inside the storing case 13, and which can supply the air inside the storing case 13; a suction tube 15 with a suction opening 15b which can take in the air and supply the air to the outside reservoir 11; an inside reservoir stipulated by partition walls provided inside the storing case 13 and which can hold air supplied from the outside reservoir, a hold chamber stipulated inside the storing case 13, which can store the accumulator module with a plurality of the storage cells, and in which the air supplied from the inside reservoir can be circulated through a communicating tube 17 formed in the partition walls; and an ejecting tube 12 connected to the storing case and ejecting the air inside the storing case 13. COPYRIGHT: (C)2009,JPO&INPIT