Modularized energy storage battery cooling system and control method thereof

The invention discloses a modular energy storage battery cooling system and a control method thereof, the system comprises a liquid supply system, a refrigeration system and a control system, the liquid supply system and the refrigeration system are mutually communicated and connected, and the control system is electrically connected with the liquid supply system and the refrigeration system. The method comprises the following steps: acquiring a battery refrigerating capacity change signal, a battery liquid return temperature and an external environment temperature; the liquid supply and return temperature and the external environment temperature are judged; according to a judgment result, selecting a corresponding heating and refrigerating mode to heat or refrigerate a cooled device of the battery cabinet; and stopping heating or refrigerating the cooled device of the battery cabinet until the battery liquid return temperature meets the battery refrigerating capacity change signal. Temperature compensation i