Battery cooling device

The present invention relates to a battery cooling device and provides a battery cooling device including a case formed to accommodate cooling oil including a plurality of battery cells, and an oil cooling part provided in the case and exchanging heat with the cooling oil, wherein the oil cooling portion includes a first cooling portion that maintains a temperature within a preset temperature range to exchange heat with the cooling oil, and a second cooling portion that exchanges heat with the first cooling portion using a refrigerant supplied from the outside. 本发明涉及一种电池冷却装置并且提供了一种包括被形成为容纳包含有多个电池单元的冷却油的壳体以及设置在壳体内并与冷却油进行换热的油冷却部的电池冷却装置，其中油冷却部包括将温度保持在预设温度范围内以与冷却油进行换热的第一冷却部以及使用从外部供应的制冷剂与第一冷却部进行换热的第二冷却部。