Dependable NTC Thermistor for Electric Vehicles

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Dependable NTC Thermistor for Electric Vehicles


An electric vehicle (EV) is one that operates on an electric motor. It includes BEVs (battery) , PHEVs (plug-in hybrid) and FCEVs (fuel cell). NTC thermistors will be installed in BMS of EV. BMS, also called battery management system, an important link connecting the on-board power battery and the electric vehicle. The following are the main functions of the BMS:

  1. Real-time monitoring of battery physical parameters;
  2. Battery state estimation;
  3. Online diagnosis and early warning;
  4. Charge, discharge and pre-charge control;
  5. Balanced management and thermal management.

Due to the long-term use of the battery, different batteries will produce different degrees of loss and heat, so it is necessary to check the temperature of each battery to avoid the excessive loss of a single battery from affecting other batteries, so as to make full preparations in time. preparation. BMS uses NTC temperature sensor for high-precision and high-sensitivity temperature measurement, which is convenient for accurate measurement of battery temperature. At the same time, the combination of internal and external temperature detection is used for temperature detection, which improves the accuracy of detection results and is conducive to effective battery management. The system plays a protective role and prolongs the service life of the battery.

The BMS uses an NTC temperature sensor to detect the temperature of each battery in the lithium battery system, which is convenient for timely understanding of the external temperature of each battery and avoids adverse effects caused by excessive or low local temperatures, so as to fully connect the working temperature of the entire lithium battery system and comprehensively Knowing the working temperature of the battery and improving the accuracy of the test results will help the entire battery management system to effectively manage the lithium battery system and play a good role in protection.