Electronic expansion valve and thermal management system

The utility model discloses an electronic expansion valve and a thermal management system, the electronic expansion valve comprises a valve seat and a valve core assembly, the valve seat comprises a valve port, the valve core assembly comprises a valve core, a rotating shaft and a limiting mechanism, and the limiting mechanism is used for limiting the rotating angle range of the rotating shaft between a first position and a second position. The first position corresponds to the position where the valve element seals the valve port, and the second position corresponds to the position where the valve element opens the valve port to the set opening degree. According to the electronic expansion valve, the stop mechanism of the reduction gearbox base is used for limiting the limiting mechanism, the rotation degree of the valve element assembly can be accurately positioned, the reduction gearbox base can achieve the accurate positioning effect, the expected value to which the valve element moves can be kept consist