Energy flow system control method based on transcritical CO2 thermal management

The invention belongs to the technical field of new energy automobiles, and discloses a control method of an energy flow system based on transcritical CO2 thermal management. The energy flow system comprises a lithium ion battery, a motor, a CO2 compressor, an outdoor heat exchanger, a front-end water radiator, an indoor heat exchanger, a battery cooler, a four-way reversing valve, a heat regenerator, a first electronic expansion valve, a second electronic expansion valve, a first electronic water pump, a second electronic water pump, an indoor fan, an outdoor fan and a gas-liquid separator. In the control method, controlled parts comprise a CO2 compressor, a first electronic expansion valve, a second electronic expansion valve, a first electronic water pump, a second electronic water pump, an indoor fan and an outdoor fan. In the technical scheme provided by the invention, different requirements of a battery, a motor and a passenger compartment are considered as a whole, and comprehensive control is carried