BATTERY COOLING DEVICE

A battery cooling device capable of cooling an entire battery more evenly is provided. A battery cooling device (30) includes a one-side heat exchanger (40) configured to cool a one side surface (20u), and an other-side heat exchanger (50) configured to cool the other side surface (20d), which is a surface facing the one side surface (20u). The one-side heat exchanger (40) includes heat exchange units from a one-side first heat exchange unit (41, 41A) to a one-side nth heat exchange unit (44, 44A) in an order in which refrigerant flows. The other-side heat exchanger (50) includes heat exchange units from an other-side nth heat exchange unit (54, 54A) to an other-side first heat exchange unit (51, 51A) in the order in which refrigerant flows. The other-side first heat exchange unit (51, 51A) to the other-side nth heat exchange unit (54, 54A) are provided at positions where the other-side first heat exchange unit (51, 51A) to the other-side nth heat exchange unit (54, 54A) face the one-side first heat exchange unit (41, 41A) to the one-side nth heat exchange unit (44, 44A), respectively.