Electric Vehicle Battery management system and NTC Temperature Sensor

　　Electric vehicles are vehicles powered by on-board power sources and driven by electric motors to drive the wheels, meeting various requirements of road traffic and safety regulations. Electric vehicles are divided into three types: pure electric vehicles, hybrid electric vehicles, and fuel cell vehicles. Currently, electric vehicles use lithium batteries as the power source, and usually multiple lithium batteries are used in combination to meet the requirements.

　　With the increasingly widespread use of electric vehicle batteries, battery management has become increasingly important. The electric vehicle Battery management system (BMS) is an important link between the on-board power battery and the electric vehicle. BMS has the following functions:

　　1. Real time monitoring of battery physical parameters;

　　2. Battery state estimation;

　　3. Online diagnosis and warning;

　　4. Charging, discharging, and pre charging control;

　　5. Balanced management and thermal management.

　　The electric vehicle Battery management system conducts high-precision and high-sensitivity temperature measurement through the NTC temperature sensor, which is convenient for accurate measurement of the battery temperature. At the same time, it uses the combination of internal and external temperature detection to conduct temperature detection, which improves the accuracy of the detection results, is conducive to the effective management of the battery, plays a protective role in the battery system, and extends the service life of the battery.

　　BMS uses NTC temperature sensors to detect the temperature of individual batteries in the lithium battery system, so as to timely understand the external temperature of each individual battery and avoid adverse effects caused by local too high or too low temperature, so as to fully connect the operating temperature of the entire lithium battery system, improve the accuracy of detection results, and fully understand the operating temperature of the battery, which is conducive to the effective management of the entire Battery management system on the lithium battery system, It has played a good protective role.

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