Temperature control system and method used in liquid cooling energy storage cabin

The temperature control system comprises a liquid cooling unit, a main pipeline and a connecting pipeline, an electromagnetic valve used for controlling flow is installed on the connecting pipeline, the electromagnetic valve is installed at the position above a secondary pipeline, the electromagnetic valve is in communication connection with a controller, and the controller is used for receiving temperature signals of a BMS and controlling the temperature signals of the BMS. The method comprises the following steps that a temperature signal is received by a controller, the opening degree of electromagnetic valves is controlled according to the temperature signal, the controller feeds back an opening degree signal of the electromagnetic valves to a liquid cooling unit, the liquid cooling unit performs power reduction or power increase operation according to the opening degree signal of the electromagnetic valves, and temperature control adjustment comprises the following steps that 1, the opening degree of all