BATTERY COOLING DEVICE FOR VEHICLE

To provide a battery cooling device for a vehicle, having a high cooling performance.SOLUTION: A heat exchanger (20) includes: a first heat medium channel (51) that is contacted with a depression flat surface (31) of which a dimension of a channel is relatively large as a reference of a direction along a depression direction by a depression member (30); and a second heat medium channel (52) that is not contacted to depression surfaces (31, 31A, and 31B) of which each dimension of the channel is smaller than the first heat medium channel (51). In a gap region (S) between the second heat medium channel (52) and the depression flat surface (31), an inclusion member (60) that can be contacted to the second heat medium channel (52) and can be contacted to the depression flat surface (31) is arranged. The depression flat surface (31) can depress the second heat medium channel (52) via the inclusion member (60).SELECTED DRAWING: Figure 1 【課題】冷却性能の高い車両用バッテリ冷却装置を提供すること。【解決手段】熱交換器（２０）は、押付部材（３０）による押付方向に沿う方向を基準として、流路の寸法が相対的に大きく押付平面（３１）と当接される第１熱媒体流路（５１）と、流路の寸法が第１熱媒体流路（５１）よりも小さく押付平面（３１,３１Ａ,３１Ｂ）と当接されない第２熱媒体流路（５２）と、を有している。第２熱媒体流路（５２）と押付平面（３１）との隙間領域（Ｓ）には、第２熱媒体流路（５２）と当接可能であると共に押付平面（３１）に当接可能な介在部材（６０）が配されている。押付平面（３１）は、介在部材（６０）を介して第２熱媒体流路（５２）を押し付け可能である。【選択図】図１