电机绕组与NTC温度传感器

Motor winding and NTC temperature sensor

Number of Views:34202022-03-01 15:18:46

Automobile motors, also known as motors, are the core components of automobiles. In order to ensure the service life and best performance of the motor, the temperature of the motor will continue to be monitored and run within the temperature range above 140°C as much as possible. Therefore, it is very important to determine the stator winding temperature. In order to prevent the high temperature of the stator winding from affecting the functional safety and service life of the motor, an NTC temperature sensor is generally used to monitor the working temperature of the winding in real time.
NTC temperature sensor (negative temperature coefficient thermistor) is made of metal oxides such as manganese, cobalt, nickel and copper as the main material, and is manufactured by ceramic technology. These materials have semiconducting properties and behave like germanium, silicon and other semiconducting materials in the way they conduct electricity. When the temperature is low, the number of these oxide carriers is small, and its resistance value is higher; as the temperature increases, the number of carriers increases and its resistance value decreases. NTC temperature sensor has the characteristics of small size, high precision, high sensitivity, stable performance and high cost performance. Therefore, the use of NTC temperature sensor is more conducive to the accurate monitoring of the working temperature of the winding of the motor.
This NTC temperature sensor uses a glass-sealed resistor combined with a double-layer Teflon sleeve to make the glass-sealed NTC thermistor more waterproof. After the double-layer Teflon casing and the Teflon insulated lead are welded at a high temperature of 450°C, the lead insulation layer and the Teflon are completely fused together, making it extremely waterproof and oil-proof; the product can be completely put into water or It can work normally in oil, and can work normally in a high temperature environment above 250 ℃ for a long time, with long service life and strong practicability. And the head size is small. Small size, small installation space requirements. This high waterproof and high oil proof NTC temperature sensor is more suitable for automotive motors.

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