Selection and Application of Temperature Sensor used in New Energy Vehicle Motors
The internal environment of the drive motor for new energy vehicles is complex and harsh,and the reliable application of temper-ature sensors for vehicle motors has become one of the important weak links affecting the safe operation of the motor and vehicle.Starting from the analysis of the internal environment and temperature monitoring technology requirements of vehicle motors,this article focuses on the de-sign,installation,and reliable measurement of temperature sensors for vehicles.The accuracy,reliability,and other performance characteris-tics of different types of temperature sensors are studied and compared,and the technical indicators of NTC for vehicle motors are proposed;Researched and designed a highly reliable NTC temperature sensor structure and installation method that is resistant to corrosion,compres-sion,and lead tension;A temperature measurement circuit for automotive motor NTC was studied and constructed,and the electrical net-work and thermal protection parameters were analyzed and calculated;The NTC and protection circuit designed in this article were actually assembled on the drive motor of new energy vehicles,and motor temperature rise experiments were conducted to verify the applicability and accuracy of the NTC temperature sensor and temperature measurement circuit proposed in this article for new energy vehicle motors.
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