Bi-directional cooling system for minimizing cell to cell temperature deviation of battery module

摘要

Various embodiments of the present invention relate to a bidirectional cooling system, and a technical problem to be solved is to provide a bidirectional cooling system for minimizing the cell-to-cell temperature deviation of the battery module. To this end, the present invention is a battery module including a plurality of battery cells, the housing having a housing having an inlet through which cooling air is introduced into one side of the battery cell and an outlet through which cooling air is discharged to the other side of the battery cell; An air temperature sensor for sensing an air temperature at the inlet; A module temperature sensor sensing a temperature of the battery cell; A cooling fan that rotates in a forward or reverse direction so that cooling air flows from the inlet to the outlet of the battery module or from the outlet to the inlet; And when the air temperature obtained from the air temperature sensor is lower than a reference air temperature and the module temperature obtained from the module temperature sensor is higher than a reference initial module temperature, rotating the cooling fan in a forward direction so that the cooling air is discharged from the inlet. And when the module temperature obtained from the module temperature sensor is higher than the reference final module temperature higher than the reference initial module temperature, rotating the cooling fan in a reverse direction so that the cooling air flows from the outlet to the inlet. Disclosed is a bidirectional cooling system for minimizing cell-to-cell temperature variation of a battery module including a control unit.