In the thermal management system of electric vehicles, electronic expansion valves are mainly used in air conditioning systems and battery thermal management systems. An electronic expansion valve is composed of three parts: a controller, an actuator, and a sensor. Since the temperature-sensing component of an electronic expansion valve is a thermocouple or thermal resistor, it can accurately reflect changes in superheat at low temperatures and provide more precise flow regulation. At the same time, the electronic expansion valve has a wide flow control range, high responsiveness, fast action, and fine adjustment, which makes up for the shortcoming that capillary tubes and thermal expansion valves cannot be adjusted, and is more suitable for the electronicization of electric vehicles and refined control of thermal management.
