Temperature adjustment device

Abstract

A temperature adjustment device (and) includes: an insulation layer () provided in contact with bottom parts of the plurality of batteries (Bt); and a flow passage forming member () that is located on a side opposite to the plurality of batteries with the insulation layer interposed therebetween, and forms a flow passage () of cooling medium. The flow passage includes a plurality of cooling flow passages (fto f) that face the bottom surfaces of one or more different batteries of the plurality of batteries with the insulation layer interposed therebetween, a common inflow passage () that is connected to the plurality of cooling flow passages and in which the cooling medium is flowed, and a common exhaust passage () which collects and exhausts the cooling medium exhausted from the plurality of cooling flow passages. A cross-sectional area of a cooling flow passage corresponding to a first battery of the plurality of batteries among cross-sectional areas of the plurality of cooling flow passages is larger than a cross-sectional area of a cooling flow passage meeting a second battery whose temperature is lower than the temperature of the first battery in a use state. The cross-sectional areas of the plurality of cooling flow passages have cross sections parallel to a face of the insulation layer in contact with the bottom surfaces.