BMS battery management system are widely used in battery management in automotive, industrial, personal electronics and other fields, which monitors battery cells by passing information to micro-controller Unit (MCU) or Microprocessor Unit (MPU) to optimize system performance and increase life of battery cell. In some cases, BMS battery management system can also act locally through the assistance of NTC thermistor, eliminating the need for communication with the MCU/MPU to perform the task.

BMS battery management system must closely monitor the voltage, current and temperature of the battery cell and the battery pack, because temperature is very important for maintaining the working characteristics of the battery and the battery management system itself, especially during the fast charging and discharging stages. Temperature monitoring is usually done by reading the relevant temperature data of components with temperature characteristics, feeding it back to the BMS battery management system and analyzing it to complete the measurement process. The most common are resistive devices such as NTC thermistor and Resistance Temperature Detector (RTD). The use of NTC thermistor is due to their fast response, high accuracy, small size, and versatility, and their available executions makes contact temperature monitoring easier and more precise, providing the best temperature sensing options for every point or area that must be monitored. Other temperature measurement techniques, such as thermocouple, requires proper shielding of millivolt readings and cold junction compensation, while diode/bipolar junction transistor (BJT)-based sensor requires constant current excitation. Therefore, the use of NTC thermistor in BMS battery management system for real-time temperature monitoring can more intuitively obtain temperature information to prevent the degradation of electric vehicle batteries and ensure the healthy state of health (SOH) of the battery.

The use of NTC thermistor of EXSENSE Electronics Technology Co., Ltd. in the BMS battery management system can help it maintain the best overall performance, so that the car battery can maintain normal operation during rapid charging/discharging and during user use.