The battery temperature sensor is a sensor used to measure the temperature of the battery, which can detect the temperature of the battery during the use of the battery, and transmit the temperature data to the battery management system to provide real-time temperature monitoring, so as to better control the use and charging status of the battery. The function of the battery temperature sensor is to improve the service life of the battery, improve the charging efficiency of the battery, and monitor the use of the battery. In addition, the battery temperature sensor can also collect data with the data acquisition instrument, which can better control the use and charging status of the battery.