The battery temperature sensor is used to measure the temperature of the battery pole, and the battery temperature is reliably monitored and adjusted during the charging process. When the new energy vehicle is running, the sensor will provide a temperature signal for the BMS to monitor the battery temperature and the cooling system runs The state optimizes the use of the battery to prevent the battery from overheating and maximize its working life; the battery of a hybrid/electric vehicle can provide the best energy output (purpose) only at a precisely defined (prerequisite) operating temperature.