Thermal management system, vehicle, thermal management system control method and storage medium

Abstract

The invention relates to a thermal management system, a vehicle, a thermal management system control method and a storage medium, and the thermal management system is linked with a compressor through a battery refrigeration branch, so that heat (even if the temperature of an electric drive cooling liquid is lower than a first design threshold value) of an electric drive water loop is transferred to a refrigerant loop for temperature rise in a low-temperature scene; the condition of insufficient heat of the air source is compensated; meanwhile, in an extremely cold scene, low-temperature waste heat of the electric drive water loop can be conveyed to a compressor through a battery refrigeration branch, the waste heat is converted into an available heat source through the boosting and heating functions of a refrigerant loop, and the heating requirements of a passenger compartment and a battery can still be met; therefore, the problems that when the environment temperature is low, the heating effect of a heat pump mode is poor, the electric drive cooling liquid can only be utilized when the temperature is high, and the waste heat utilization rate is low are solved.

Description

Technical Field

[0001] The present application relates to the field of vehicle thermal management technology, and in particular to a thermal management system and a vehicle, a thermal management system control method, and a storage medium. Background Art

[0002] The thermal management system for new energy vehicles is primarily divided into the air conditioning system, the battery temperature control system, and the electric drive cooling system. These systems not only meet the heating and cooling needs of the passenger compartment, but also manage the temperature of the power battery, drive motor, and various controllers. With the development of new energy technologies, higher demands are being placed on passenger compartment comfort and vehicle range, making vehicle thermal management even more crucial.

[0003] New energy thermal management systems involve numerous components. Some existing solutions integrate the air conditioning system, battery temperature control system, and electric drive cooling system. For example, integrating the battery temperature control and air conditioning systems allows for a shared compressor, reducing the number of components. Another example involves integrating the battery temperature control system with the electric drive cooling system, allowing for energy savings by utilizing waste heat from the electric drive to heat the battery. Other thermal management system solutions utilize heat pumps, reducing the power consumption of water-cooled PTCs or air-cooled PTCs when heating the passenger compartment and battery in winter. However, these solutions present the following challenges: (1) When the ambient temperature is low, the heat pump mode has a poor heating effect; under extremely cold temperature conditions, the heat pump mode cannot be enabled.

[0004] (2) Although the waste heat of the electric drive is utilized, it can only be utilized when the temperature of the electric drive coolant is high, and the waste heat utilization rate is low.

[0005] (3) In winter, the heat source for heating is single, the waste heat utilization mode and scenario are single, and the energy utilization rate is not high. Summary of the Invention

[0006] The embodiments of the present application provide a thermal management system and a vehicle, a thermal management system control method, and a storage medium to address the problems in the related art where the heat pump mode has a poor heating effect when the ambient temperature is low, the electric drive coolant can only be used when the temperature is high, and the waste heat utilization rate is low.

[0007] In a first aspect, a thermal management system is provided, comprising: A refrigerant circuit comprising a main branch having a compressor, and an air-cooled condensing branch and a battery cooling branch connected in parallel with the main branch; The cooling water circuit includes an electric drive water circuit, a battery water circuit, and an air conditioning and heating water circuit, which are connected by a six-way solenoid valve, a five-way solenoid valve, and a three-way valve circuit; The control unit is used to send the heat from the electric drive water circuit to the compressor through the battery cooling branch for heating when the air heat source of the air-cooled condensing branch is insufficient and the electric drive coolant temperature is lower than the first design threshold under heating demand, so as to provide the heat required by the passenger compartment and the battery.

[0008] In some embodiments, the main branch includes a connection with the compressor outlet, a second PT sensor, a water-cooled condenser, a third PT sensor, a first refrigerant shut-off valve, a fourth PT sensor, a first electronic expansion valve, an evaporator, a one-way valve, and a gas-liquid separator in sequence; the gas-liquid separator is connected to the compressor inlet, and the first PT sensor is provided therebetween; The two ends of the battery cooling branch are respectively connected to the fourth PT sensor and the gas-liquid separator, and include a second electronic expansion valve and a battery refrigerator connected in sequence; The air-cooled condensing branch includes a large-diameter electronic expansion valve, an air-cooled condenser, and a one-way valve connected in sequence; the large-diameter electronic expansion valve is connected to the third PT sensor, and the one-way valve of the air-cooled condensing branch is connected to the fourth PT sensor; a second refrigerant stop valve is also provided between the air-cooled condenser and the one-way valve, and the second refrigerant stop valve is connected to the gas-liquid separator.

[0009] In some embodiments, the electric drive water circuit includes an electric drive water pump, an electric drive, a five-way solenoid valve and a radiator connected in sequence; the electric drive water outlet is connected to the second interface of the five-way solenoid valve, the fourth interface of the five-way solenoid valve is connected to the water inlet of the first plate heat exchange side, the water outlet of the first plate heat exchange side is connected to the third interface of the five-way solenoid valve, the first interface of the five-way solenoid valve is connected to the water inlet of the radiator, and the radiator water outlet is connected to the sixth interface of the six-way solenoid valve after merging with the fifth interface of the five-way solenoid valve; The battery water circuit includes a six-way solenoid valve, a battery water pump, a second PTC, and a battery connected in sequence; the second PTC is connected in parallel with a second plate changer; the fifth interface of the six-way solenoid valve is connected to the water inlet of the electric drive water pump, and the electric drive inlet and outlet water channels are equipped with an electric drive inlet water temperature sensor and an electric drive outlet water temperature sensor; the battery outlet is connected to the second interface of the six-way solenoid valve, the third interface of the six-way solenoid valve is connected to the water inlet of the battery cooler, the battery cooler outlet is connected to the fourth interface of the six-way solenoid valve, and the battery cooler outlet water channel is equipped with a battery cooler outlet water temperature sensor; the first interface of the six-way solenoid valve is connected to the water inlet of the battery water pump; the battery inlet and outlet water channels are equipped with a battery water temperature sensor and a battery water temperature sensor.

[0010] In some embodiments, the air conditioning warm air water circuit includes a warm air water pump, a first PTC, and a warm air core connected in sequence; the water outlet of the warm air core is connected to the first interface of the three-way valve of the three-way valve circuit, the third interface of the three-way valve is connected to the second plate water inlet, the second plate water outlet is merged with the second interface of the three-way valve and then connected to the water inlet of the water-cooled condenser, the water outlet of the water-cooled condenser is connected to the cold side water inlet of the first plate, the cold side water outlet of the first plate is connected to the warm air water pump inlet, and a condensation outlet water temperature sensor is installed in the water path of the water-cooled condenser outlet.

[0011] In a second aspect, a thermal management system control method is provided, which comprises the following steps: Obtaining the real-time ambient temperature of the thermal management system according to claim 1 to determine an environmental scenario; the environmental scenario includes a medium-high temperature scenario, a low temperature scenario, and an extreme cold scenario; Obtain the real-time thermal requirements of the battery, electric drive, and passenger compartment, and call the working mode based on the determined control scenario.

[0012] In some embodiments, when the ambient temperature is greater than a first threshold, it is a medium-high temperature scene; when the ambient temperature is less than or equal to the first threshold and greater than a second threshold, it is a low temperature scene; when the ambient temperature is less than or equal to the second threshold, it is an extreme cold scene.

[0013] In some embodiments, when the battery needs to be cooled and the electric drive does not need to dissipate heat in medium or high temperature scenarios, operating mode 1 is executed; In medium- and high-temperature scenarios, when the passenger compartment and battery require cooling but the electric drive does not require heat dissipation, operating mode 2 is executed; In medium- and high-temperature scenarios, when the passenger compartment and battery require cooling, and the electric drive requires heat dissipation, operating mode three is executed; When the passenger cabin needs cooling and the electric drive needs heat dissipation in medium and high temperature scenarios, operating mode 4 is executed; In medium- and high-temperature scenarios, when only the electric drive needs to dissipate heat, operating mode 5 is executed; In medium and high temperature scenarios, when the battery needs to be cooled and the electric drive needs to dissipate heat, operating mode six is ​​executed.

[0014] In some embodiments, the first operating mode performs the following control: The six-way solenoid valve is controlled to be in conduction mode three, and the battery water pump is turned on; the compressor of the refrigerant circuit is controlled to adjust the speed according to the battery water inlet temperature, the large-diameter electronic expansion valve is fully opened, the second electronic expansion valve controls the opening according to the superheat of the battery cooler, and the remaining valves are closed; the fan of the air-cooled condenser is controlled to adjust the speed according to the refrigerant circuit pressure.

[0015] In some embodiments, the second working mode performs the following control: On the basis of working mode 1, the compressor is controlled to adjust the speed according to the evaporation temperature of the evaporator and the battery inlet water temperature, and the first electronic expansion valve is controlled to control the opening according to the superheat of the evaporator; The working mode three controls as follows: On the basis of the working mode two, the electric-driven water pump is controlled to be turned on, the five-way electromagnetic valve is in the conduction mode one, and the electronic fan of the radiator is controlled to adjust the rotating speed according to the electric-driven outlet water temperature.

[0016] In some embodiments, the working mode four controls as follows: The compressor of the refrigerant circuit is controlled to adjust the rotating speed according to the evaporator evaporation temperature, the large-diameter electronic expansion valve is fully opened, the first electronic expansion valve is controlled to adjust the opening degree according to the evaporator superheat, and the remaining valves are closed; the six-way electromagnetic valve is controlled to be in the conduction mode three, the five-way electromagnetic valve is in the conduction mode one, and the electric-driven water pump is turned on; the electronic fan of the radiator is controlled to adjust the rotating speed according to the electric-driven outlet water temperature, and the fan of the air-cooled condenser is controlled to adjust the rotating speed according to the refrigerant circuit pressure; The working mode five controls as follows: The six-way electromagnetic valve is controlled to be in the conduction mode three, the five-way electromagnetic valve is in the conduction mode one, and the electric-driven water pump is turned on; the electronic fan of the radiator is controlled to adjust the rotating speed according to the electric-driven outlet water temperature.

[0017] In some embodiments, the working mode six controls as follows: On the basis of the mode one, the electric-driven water pump is controlled to be turned on, the five-way electromagnetic valve is in the conduction mode one, and the electronic fan of the radiator is controlled to adjust the rotating speed according to the electric-driven outlet water temperature.

[0018] In some embodiments, when the battery and the electric drive both need to be cooled in a low-temperature scenario, the working mode seven is executed. When the battery needs to be heated in a low-temperature scenario, the working mode eight is executed if the air heat source meets the heating demand, and the working mode nine is executed if the air heat source does not meet the heating demand. When the battery heating demand is large or both the passenger cabin and the battery need to be heated in a low-temperature scenario or an extremely cold scenario, the working mode ten is executed. When both the passenger cabin and the battery need to be heated in a low-temperature scenario, the working mode eleven is executed if the air heat source meets the heating demand, and the working mode twelve is executed if the air heat source does not meet the heating demand. When the passenger cabin needs to be heated in a low-temperature scenario, the working mode thirteen is executed if the air heat source meets the heating demand, and the working mode fourteen is executed if the air heat source does not meet the heating demand. When the battery needs to be refrigerated and the passenger cabin needs to be heated in a low-temperature scenario or an extremely cold scenario, the working mode fifteen is executed if the refrigerant circuit transferred heat of the battery meets the heating demand of the passenger cabin, and the working mode sixteen is executed if the refrigerant circuit transferred heat of the battery does not meet the heating demand of the passenger cabin. When the battery needs to be refrigerated, the passenger cabin needs to be heated, and the electric drive needs to be cooled in a low-temperature scenario or an extremely cold scenario, and the electric drive cooling liquid temperature is less than a first set threshold, the working mode seventeen is executed. In low-temperature or extremely cold scenarios, when the passenger compartment and battery need to be heated and the electric drive needs to be cooled, operating mode 20 is executed if the residual heat of the electric drive meets the heating requirements; otherwise, operating mode 21 is executed; In low-temperature scenarios, when the passenger compartment and battery require heating and the electric drive water circuit needs to store heat, if the air heat source meets the heating requirements, operating mode 18 is executed; if not, operating mode 19 is executed; when the electric drive coolant temperature exceeds the second set threshold, the system switches to operating mode 22; In low-temperature scenarios, when the passenger compartment and battery need to be heated and the electric drive needs to dissipate heat, if the air heat source meets the heating requirements, operating mode 22 is executed; if not, operating mode 23 is executed; In low-temperature or extremely cold scenarios, when the passenger compartment and battery need to be heated and the electric drive needs to be cooled, operating mode 24 is executed; In low-temperature or extreme-cold scenarios, when the passenger compartment and battery require heating and the electric drive requires cooling, and the electric drive coolant temperature is greater than a first set threshold, operating mode 25 is executed if the electric drive residual heat meets the heating requirements; otherwise, operating mode 26 is executed; In low-temperature or extremely cold scenarios, when the passenger compartment and battery need to be heated and the electric drive needs to be cooled, if the residual heat of the electric drive meets the heating requirements, operating mode 27 is executed; otherwise, operating mode 28 is executed; In low-temperature or extreme-cold scenarios, when the passenger compartment and battery need to be heated and the electric drive needs to be cooled, operating mode 29 is executed if the residual heat of the electric drive meets the heating requirements; otherwise, operating mode 30 is executed; In low-temperature scenarios, when the passenger cabin needs to be heated and the electric drive needs to store heat, if the air heat source meets the heating requirements, operating mode 31 is executed; if not, operating mode 32 is executed; In low-temperature or extreme-cold scenarios, when the passenger cabin needs to be heated and the electric drive needs to be cooled, if the residual heat of the electric drive meets the heating requirements, operating mode 33 is executed; otherwise, operating mode 34 is executed; In low-temperature or extremely cold scenarios, when the passenger cabin needs to be heated and the electric drive needs to be cooled, if the residual heat of the electric drive meets the heating requirements, operating mode 35 will be executed; otherwise, operating mode 36 will be executed; In low-temperature scenarios, when the passenger compartment needs to be heated and the electric drive needs to be cooled, operating mode 37 is executed; In low-temperature scenarios, when the passenger compartment needs to be heated, the battery needs to be cooled, and the electric drive needs to be cooled, working mode 38 is executed.

[0019] In some embodiments, the seventh working mode performs the following control: The six-way solenoid valve is controlled to be in conduction mode five, and the battery water pump is turned on; the five-way solenoid valve is controlled to be in conduction mode one, and the electric drive water pump is turned on; the electronic fan of the radiator is controlled to adjust the speed according to the battery water inlet temperature.

[0020] In some embodiments, the working mode eight controls as follows: The six-way electromagnetic valve is in the on mode one, the battery water pump is turned on, the compressor of the refrigerant circuit adjusts the rotating speed according to the battery water inlet temperature, the large-diameter electronic expansion valve adjusts the opening degree according to the superheat of the air-cooled condenser, the second refrigerant stop valve is turned on, and the remaining valves are turned off; the fan of the air-cooled condenser adjusts the rotating speed according to the pressure of the refrigerant circuit; The working mode nine includes starting the second PTC on the basis of the working mode eight.

[0021] In some embodiments, the working mode ten controls as follows: The six-way electromagnetic valve is in the on mode one, the battery water pump is turned on, and the second PTC is started; the first interface and the third interface of the three-way valve are in conduction, the warm air water pump is turned on, and the first PTC is started; The working mode eleven controls as follows: The six-way electromagnetic valve is in the on mode one, the battery water pump is turned on, and the second PTC is started; the first interface and the third interface of the three-way valve are in conduction, the warm air water pump is turned on; the compressor of the refrigerant circuit adjusts the rotating speed according to the water outlet temperature of the water-cooled condenser, the large-diameter electronic expansion valve adjusts the opening degree according to the superheat of the air-cooled condenser, the second refrigerant stop valve is turned on, and the fan of the air-cooled condenser adjusts the rotating speed according to the pressure of the refrigerant circuit; the working mode twelve includes starting the first PTC on the basis of the working mode eleven.

[0022] In some embodiments, the working mode thirteen controls as follows: The compressor of the refrigerant circuit adjusts the rotating speed according to the water outlet temperature of the water-cooled condenser, the large-diameter electronic expansion valve adjusts the opening degree according to the superheat of the air-cooled condenser, the second refrigerant stop valve is turned on, and the remaining valves are turned off; the fan of the air-cooled condenser adjusts the rotating speed according to the pressure of the refrigerant circuit; the first interface and the second interface of the three-way valve are in conduction, and the warm air water pump is turned on; The working mode fourteen includes starting the first PTC on the basis of the working mode thirteen.

[0023] In some embodiments, the working mode fifteen controls as follows: The six-way electromagnetic valve is in the on mode three, the battery water pump is turned on; the compressor of the refrigerant circuit adjusts the rotating speed according to the battery water inlet temperature, the first refrigerant stop valve is turned on, the second electronic expansion valve adjusts the opening degree according to the superheat of the battery condenser, and the remaining valves are turned off; the first interface and the second interface of the three-way valve are in conduction, and the warm air water pump is turned on; The working mode sixteen includes starting the first PTC on the basis of the working mode fifteen.

[0024] In some embodiments, the seventeenth working mode performs the following control: Control the six-way solenoid valve to conduction mode four, and start the battery water pump; The compressor of the refrigerant circuit is controlled to adjust its speed according to the water outlet temperature of the water-cooled condenser. The first refrigerant shut-off valve is opened, and the second electronic expansion valve is controlled to open according to the superheat of the battery cooler. The electric water pump is controlled to start, and the five-way solenoid valve is in conduction mode 1. The electronic fan that controls the radiator adjusts its speed according to the water outlet temperature of the electric drive.

[0025] In some embodiments, the operating mode 18 performs the following control: The six-way solenoid valve is controlled to conduct in mode one, the battery water pump is turned on, and the second PTC is turned on. The compressor of the refrigerant circuit is controlled to adjust the speed according to the water outlet temperature of the water-cooled condenser. The large-diameter electronic expansion valve adjusts the opening according to the superheat of the air-cooled condenser. The second refrigerant shut-off valve is opened, and the other valves are closed. The electric drive water pump is controlled to be turned on, and the five-way solenoid valve is controlled to conduct in mode three for heat storage. The fan of the air-cooled condenser is controlled to adjust the speed according to the refrigerant circuit pressure. The first and second interfaces of the three-way valve are controlled to be connected, and the warm air water pump is turned on. The nineteenth working mode includes starting the first PTC on the basis of the eighteenth working mode.

[0026] In some embodiments, the operating mode 20 performs the following control: The six-way solenoid valve is controlled to be in conduction mode 2, the battery water pump is turned on, and the second PTC is activated; the compressor of the refrigerant circuit is controlled to adjust the speed according to the water outlet temperature of the water-cooled condenser, the first refrigerant shut-off valve is opened, and the second electronic expansion valve is controlled to control the opening according to the superheat of the battery cooler; the remaining valves are closed; the electric drive water pump is controlled to be turned on, and the five-way solenoid valve is turned on in conduction mode 3 to allow the electric drive water to enter the battery cooler; the first and second interfaces of the three-way valve are controlled to be connected, and the heater water pump is turned on; The working mode 21 includes starting the first PTC on the basis of the working mode 20.

[0027] In some embodiments, the operating mode 22 performs the following control: Control the six-way solenoid valve to conduction mode five, and turn on the battery water pump; control the compressor of the refrigerant circuit to adjust the speed according to the water outlet temperature of the water-cooled condenser, and adjust the opening of the large-diameter electronic expansion valve according to the superheat of the air-cooled condenser. The second refrigerant shut-off valve is opened, and the other valves are closed; control the electric drive water pump to be turned on, and conduct the five-way solenoid valve to conduction mode three to allow the electric drive water to be connected to the battery water circuit; control the fan of the air-cooled condenser to adjust the speed according to the refrigerant circuit pressure, control the first and second interfaces of the three-way valve to be connected, and turn on the warm air water pump; The working mode 23 includes starting the first PTC on the basis of the working mode 22.

[0028] In some embodiments, the operating mode 24 performs the following control: The six-way solenoid valve is controlled to be in conduction mode 5, and the battery water pump is turned on; Control the electric drive water pump to start, and the five-way solenoid valve is in conduction mode three to allow the electric drive water to flow into the battery water circuit; control the first and second interfaces of the three-way valve to be connected, the heater water pump to start, and the first PTC to start.

[0029] In some embodiments, the operating mode 25 performs the following control: Control the six-way solenoid valve to conduction mode four, and start the battery water pump; When the refrigerant circuit is started, the compressor adjusts its speed according to the water temperature at the water-cooled condenser outlet, the first refrigerant shut-off valve opens, the second electronic expansion valve controls its opening according to the battery cooler's superheat, and the remaining valves are closed. The electric water pump is turned on, and the five-way solenoid valve is in conduction mode three, allowing the electric water to flow into the battery water circuit. The first and second interfaces of the three-way valve are connected, and the heater water pump is turned on. The working mode 26 includes starting the first PTC based on the working mode 25.

[0030] In some embodiments, the operating mode 27 performs the following control: The six-way solenoid valve is controlled to be in conduction mode 1, the battery water pump is turned on, and the second PTC is activated; the electric drive water pump is controlled to be turned on, the five-way solenoid valve is controlled to be in conduction mode 2, and the electric drive water is connected to the first plate exchanger; the first and second interfaces of the three-way valve are controlled to be connected, and the heater water pump is turned on; The working mode 28 includes activating the first PTC based on the working mode 27.

[0031] In some embodiments, the twenty-ninth working mode performs the following control: The six-way solenoid valve is controlled to be in conduction mode five, and the battery water pump is turned on; the electric drive water pump is turned on, and the five-way solenoid valve is in conduction mode two, so that the electric drive water is first connected to the first plate exchanger and then to the battery water circuit; the first and second interfaces of the three-way valve are controlled to be connected, and the heater water pump is turned on; The working mode 30 includes starting the second PTC on the basis of the working mode 29.

[0032] In some embodiments, the following control is performed in the working mode 31: The compressor in the refrigerant circuit is controlled to adjust its speed according to the water outlet temperature of the water-cooled condenser. The large-diameter electronic expansion valve adjusts its opening according to the superheat of the air-cooled condenser, and the second refrigerant shut-off valve is opened. The five-way solenoid valve is controlled to be in conduction mode three to store heat in the electric drive water circuit. The first and second interfaces of the three-way valve are connected, and the warm air water pump is turned on. The fan in the air-cooled condenser is controlled to adjust its speed according to the refrigerant circuit pressure. The working mode 32 includes starting the first PTC based on the working mode 31.

[0033] In some embodiments, the thirty-three working mode performs the following control: The compressor of the refrigerant circuit is controlled to adjust its speed according to the water outlet temperature of the water-cooled condenser. The first refrigerant shut-off valve is opened, the second electronic expansion valve is controlled to open according to the superheat of the battery cooler, and the remaining valves are closed. The electric drive water pump is controlled to start, and the five-way solenoid valve is in conduction mode three to allow the electric drive water to enter the battery cooler. The first and second interfaces of the three-way valve are controlled to be conductive, and the heater water pump is turned on. The electronic fan of the radiator is controlled to adjust its speed according to the water outlet temperature of the electric drive. The working mode 34 includes starting the first PTC on the basis of the working mode 33.

[0034] In some embodiments, the operating mode thirty-five performs the following control: The electric drive water pump is controlled to start, the five-way solenoid valve is in conduction mode 2, and the electric drive water is connected to the first plate exchanger; the first and second interfaces of the three-way valve are controlled to be connected, and the heater water pump is turned on; The thirty-sixth working mode includes starting the first PTC based on the thirty-fifth working mode.

[0035] In some embodiments, the thirty-seventh working mode performs the following control: The compressor that controls the start of the refrigerant circuit adjusts its speed according to the water outlet temperature of the water-cooled condenser, the large-diameter electronic expansion valve adjusts its opening according to the superheat of the air-cooled condenser, the second refrigerant shut-off valve is opened, and the remaining valves are closed; the electric water pump is controlled to start, and the five-way solenoid valve is in conduction mode one; the first and second interfaces of the three-way valve are controlled to be connected, and the warm air water pump is turned on; the fan of the air-cooled condenser is controlled to adjust its speed according to the refrigerant circuit pressure.

[0036] In some embodiments, the operating mode 38 performs the following control: The six-way electromagnetic valve is controlled to be in the conduction mode three, and the battery water pump is turned on; the compressor of the refrigerant circuit is controlled to adjust the rotating speed according to the water outlet temperature of the water-cooled condenser, the first refrigerant stop valve is turned on, the opening of the second electronic expansion valve is controlled according to the superheat degree of the battery cooler, and the remaining valves are closed; the electric drive water pump is controlled to be turned on, and the five-way electromagnetic valve is in the conduction mode one; the first interface and the second interface of the three-way valve are controlled to be in conduction, and the heater water pump is turned on; and the electronic fan of the radiator is controlled to adjust the rotating speed according to the electric drive water outlet temperature.

[0037] In some embodiments, when only the battery needs to be heated in an extremely cold scenario, mode thirty-nine is executed; In an extremely cold scenario, when only the passenger compartment needs to be heated, mode forty is executed; In an extremely cold scenario, when the passenger compartment and the battery need to be heated, the battery heating demand is large, and the electric drive is heat stored, mode forty-one is executed; when the electric drive coolant temperature is greater than a second set threshold, mode twenty-four is switched to; In an extremely cold scenario, when the passenger compartment needs to be heated and the electric drive is heat stored, mode forty-two is executed; when the electric drive coolant temperature is greater than a second set threshold, mode thirty-three is switched to; In an extremely cold scenario, when the passenger compartment needs to be heated and the electric drive needs to be cooled, mode forty-three is executed.

[0038] In some embodiments, mode thirty-nine performs the following control: The six-way electromagnetic valve is controlled to be in the conduction mode one, the battery water pump is turned on, and the second PTC is started; In an extremely cold scenario, when only the passenger compartment needs to be heated, mode forty performs the following control: The first interface and the second interface of the three-way valve are controlled to be in conduction, the heater water pump is turned on, and the first PTC is started.

[0039] In some embodiments, mode forty-one performs the following control: The six-way electromagnetic valve is controlled to be in the conduction mode one, the battery water pump is turned on, and the second PTC is started; the first interface and the third interface of the three-way valve are controlled to be in conduction, the heater water pump is turned on, and the first PTC is started; the electric drive water pump is controlled to be turned on, and the five-way electromagnetic valve is in the conduction mode three, so that the electric drive water circuit is heat stored.

[0040] In some embodiments, mode forty-two performs the following control: The first interface and the second interface of the three-way valve are controlled to be in conduction, the heater water pump is turned on, and the first PTC is started; the electric drive water pump is controlled to be turned on, and the five-way electromagnetic valve is in the conduction mode three, so that the electric drive water circuit is heat stored.

[0041] In some embodiments, mode forty-three performs the following control: The compressor of the refrigerant circuit is controlled to adjust the speed according to the water outlet temperature of the water-cooled condenser, the first refrigerant is cut off and opened, the second electronic expansion valve is controlled to control the opening according to the overheating of the battery cooler, and the other valves are closed; the electric water pump is controlled to start, the six-way solenoid valve is in conduction mode 2, the five-way solenoid valve is in conduction mode 1, and the electric drive water is connected to the battery cooler; the electronic fan of the radiator is controlled to adjust the speed according to the electric drive water outlet temperature.

[0042] In a third aspect, a vehicle is provided, comprising: the above thermal management system.

[0043] In a fourth aspect, a computer-readable storage medium is provided, on which a thermal management system control program is stored, wherein when the thermal management system control program is executed by a processor, the steps of the thermal management system control method are implemented.

[0044] The beneficial effects of the technical solution provided by this application include: The embodiments of the present application provide a thermal management system and a vehicle, a thermal management system control method and a storage medium. Since the battery cooling branch is linked to the compressor, the heat of the electric drive water circuit (even if the electric drive coolant temperature is lower than the first design threshold) is transferred to the refrigerant circuit for heating in low-temperature scenarios to compensate for the lack of heat from the air source; in extremely cold scenarios, the low-temperature waste heat of the electric drive water circuit can be transported to the compressor through the battery cooling branch, and the pressure-boosting and temperature-raising functions of the refrigerant circuit are used to convert the waste heat into a usable heat source, thereby still maintaining the heating needs of the passenger compartment and the battery; thereby solving the problem of poor heating effect of the heat pump mode when the ambient temperature is low and low waste heat utilization rate due to the fact that the electric drive coolant can only be used when the temperature is high. BRIEF DESCRIPTION OF THE DRAWINGS

[0045] In order to more clearly illustrate the technical solutions in the embodiments of the present application, the following briefly introduces the drawings required for use in the description of the embodiments. Obviously, the drawings described below are only some embodiments of the present application. For ordinary technicians in this field, other drawings can be obtained based on these drawings without any creative work.

[0046] Figure 1 A schematic diagram of the system provided in the embodiment of the present application; Figure 2 This is a schematic diagram of the working mode 1 conduction principle provided in an embodiment of the present application; Figure 3 This is a schematic diagram of the conduction principle of the second working mode provided in the embodiment of the present application; Figure 4 This is a three-conduction principle diagram of the working mode provided in the embodiment of the present application; Figure 5 A four-conduction principle diagram of the working mode provided in the embodiment of the present application; Figure 6 This is a five-conduction principle diagram of the working mode provided in the embodiment of the present application; Figure 7 The six-conduction principle diagram of the working mode provided in the embodiment of the present application; Figure 8 This is a schematic diagram of the working mode seven conduction principle provided in an embodiment of the present application; Figure 9 Schematic diagram of working modes eight and nine provided in the embodiment of the present application; Figure 10 A schematic diagram of the ten-conduction working mode provided in an embodiment of the present application; Figure 11 The schematic diagram of the conduction principle of the eleventh and twelfth working modes provided in the embodiment of the present application; Figure 12 Schematic diagram of the conduction principle of working modes thirteen and fourteen provided in the embodiment of the present application; Figure 13 The fifteenth and sixteenth conduction principle diagrams of the working modes provided in the embodiments of the present application; Figure 14 A schematic diagram of the conduction principle of the seventeenth working mode provided in the embodiment of the present application; Figure 15 Schematic diagram of conduction principle of working modes 18 and 19 provided in the embodiment of the present application; Figure 16 The operating modes 20 and 21 are provided as schematic diagrams of the embodiments of the present application; Figure 17 The conductive principle diagram of working modes 22 and 23 provided in the embodiment of the present application; Figure 18 24-conduction principle diagram of the working mode provided by the embodiment of the present application; Figure 19 The conductive principle diagram of working modes 25 and 26 provided in the embodiment of the present application; Figure 20 The twenty-seventh and twenty-eighth conduction principle diagrams of the working modes provided in the embodiments of the present application; Figure 21 The twenty-ninth and thirty conduction principle diagrams of the working modes provided in the embodiment of the present application; Figure 22 The conduction principle diagram of working modes 31 and 32 provided in the embodiment of the present application; Figure 23 The thirty-third and thirty-fourth conduction principle diagrams of the working modes provided in the embodiments of the present application; Figure 24 The thirty-fifth and thirty-sixth conduction principle diagrams of the working modes provided in the embodiments of the present application; Figure 25The thirty-seventh conduction principle diagram of the working mode provided in the embodiment of the present application; Figure 26 The working mode 38 conduction principle diagram provided for the embodiment of the present application; Figure 27 The thirty-ninth conduction principle diagram of the working mode provided in the embodiment of the present application; Figure 28 The forty-step conduction principle diagram of the working mode provided in the embodiment of the present application; Figure 29 A schematic diagram of the conduction principle of the working mode 41 provided in the embodiment of the present application; Figure 30 A schematic diagram of the conduction principle of the working mode 42 provided in an embodiment of the present application; Figure 31 This is a schematic diagram of the conduction principle of working mode 43 provided in an embodiment of the present application.

[0047] In the figure: 101, compressor; 102, water-cooled condenser; 103, evaporator; 104, gas-liquid separator; 105, six-way solenoid valve; 106, five-way solenoid valve; 107, battery cooler; 108, air-cooled condenser. DETAILED DESCRIPTION

[0048] To make the purpose, technical solutions, and advantages of the embodiments of this application more clear, the technical solutions in the embodiments of this application will be clearly and completely described below in conjunction with the drawings in the embodiments of this application. Obviously, the described embodiments are part of the embodiments of this application, not all of the embodiments. Based on the embodiments in this application, all other embodiments obtained by ordinary technicians in this field without making creative efforts are within the scope of protection of this application.

[0049] In related technologies, thermal management systems mainly have the following problems: 1) The system integration is not high, only some components are shared, and the functions are not fully integrated. 2) Due to the low functional integration, the thermal management mode is relatively simple, the control accuracy is not high enough, and it is difficult to achieve the optimal comfort and energy consumption.

[0050] 3) When the ambient temperature is low, the heat pump mode has a poor heating effect; in extremely cold temperature conditions, the heat pump mode cannot be activated.

[0051] 4) Although the waste heat of the electric drive is utilized, it can only be utilized when the temperature of the electric drive coolant is high, and the waste heat utilization rate is low.

[0052] 5) In winter, the heat source for heating is single, the waste heat utilization mode and scenario are single, and the energy utilization rate is low.

[0053] To solve the above problems, we first introduce the specific architecture and composition of the thermal management system, as follows: refer to Figure 1 The thermal management system integrates the air conditioning system, battery temperature control system, and electric drive cooling system. After system integration, it is mainly divided into the refrigerant circuit and the cooling water circuit.

[0054] A refrigerant circuit comprising a main branch having a compressor 101, and an air-cooled condensing branch and a battery cooling branch connected in parallel with the main branch; The cooling water circuit includes an electric drive water circuit, a battery water circuit, and an air conditioning and heating water circuit, which are connected by a six-way solenoid valve 105, a five-way solenoid valve 106, and a three-way valve circuit; The control unit is used to send the heat of the electric drive water circuit to the compressor 101 through the battery cooling branch for heating when the air heat source of the air-cooled condensing branch is insufficient and the electric drive coolant temperature is lower than the first design threshold under heating demand, so as to provide the heat required by the passenger compartment and the battery.

[0055] The main branch includes the following: connected to the outlet of the compressor 101, the second PT sensor PT2, the water-cooled condenser 102, the third PT sensor PT3, the first refrigerant shut-off valve, the fourth PT sensor PT4, the first electronic expansion valve, the evaporator 103, the one-way valve, and the gas-liquid separator 104; the gas-liquid separator 104 is connected to the inlet of the compressor 101, and the first PT sensor PT1 is provided therebetween; The two ends of the battery cooling branch are respectively connected to the fourth PT sensor PT4 and the gas-liquid separator 104, and include a second electronic expansion valve and a battery refrigerator 107 connected in sequence; The air-cooled condensing branch includes a large-diameter electronic expansion valve, an air-cooled condenser 108, and a one-way valve connected in sequence; the large-diameter electronic expansion valve is connected to the third PT sensor, and the one-way valve of the air-cooled condensing branch is connected to the fourth PT sensor; a second refrigerant stop valve is also provided between the air-cooled condenser 108 and the one-way valve, and the second refrigerant stop valve is connected to the gas-liquid separator 104.

[0056] The above electric drive water circuit includes an electric drive water pump, an electric drive, a five-way solenoid valve 106 and a radiator connected in sequence; the electric drive water outlet is connected to the second interface of the five-way solenoid valve 106, the fourth interface of the five-way solenoid valve 106 is connected to the water inlet of the first plate heat exchange side, the water outlet of the first plate heat exchange side is connected to the third interface of the five-way solenoid valve 106, the first interface of the five-way solenoid valve 106 is connected to the water inlet of the radiator, and the radiator water outlet is connected to the sixth interface of the six-way solenoid valve 105 after merging with the fifth interface of the five-way solenoid valve 106; The battery water circuit includes a six-way solenoid valve 105, a battery water pump, a second PTC, and a battery connected in sequence; the second PTC is connected in parallel with a second plate changer; the fifth interface of the six-way solenoid valve 105 is connected to the water inlet of the electric drive water pump, and the electric drive inlet and outlet water channels are equipped with an electric drive inlet water temperature sensor T1 and an electric drive outlet water temperature sensor T2; the battery outlet is connected to the second interface of the six-way solenoid valve 105, the third interface of the six-way solenoid valve 105 is connected to the water inlet of the battery cooler 107, the battery cooler 107 outlet is connected to the fourth interface of the six-way solenoid valve 105, and the battery cooler 107 outlet water channel is equipped with a battery cooler outlet water temperature sensor T5; the first interface of the six-way solenoid valve 105 is connected to the water inlet of the battery water pump; the battery inlet and outlet water channels are equipped with a battery inlet water temperature sensor T3 and a battery outlet water temperature sensor T4.

[0057] The air conditioning warm air water circuit includes a warm air water pump, a first PTC, and a warm air core connected in sequence; the water outlet of the warm air core is connected to the first interface of the three-way valve of the three-way valve circuit, the third interface of the three-way valve is connected to the water inlet of the second plate exchanger, the water outlet of the second plate exchanger is merged with the second interface of the three-way valve and connected to the water inlet of the water-cooled condenser 102, the water outlet of the water-cooled condenser 102 is connected to the cold side water inlet of the first plate exchanger, the cold side water outlet of the first plate exchanger is connected to the water inlet of the warm air water pump, and the water outlet water channel of the water-cooled condenser 102 is equipped with a condensation outlet water temperature sensor T6.

[0058] Through the above introduction, by switching and coupling different working modes of the five-way valve and the six-way valve, and switching the three-way valve, different circuits can be connected in series and parallel, thereby realizing electric drive heat dissipation, battery cooling and heating, battery low-temperature heat dissipation, electric drive waste heat heating battery, motor waste heat heating passenger compartment, and heat pump heat source heating passenger compartment and battery.

[0059] When the control unit is required to heat, the air heat source of the air-cooled condensing branch is insufficient, and the temperature of the electric drive coolant is less than the first design threshold. When both the passenger cabin and the battery are required, the heat of the electric drive water circuit is sent to the compressor (101) through the battery cooling branch for heating to provide the heat required by the passenger cabin and the battery; when only the battery needs to be heated, the electric drive water circuit is connected in series with the battery water circuit to provide the heat required by the battery; when only the passenger cabin needs to be heated, the electric drive water circuit is connected in series with the first plate exchanger to provide the heat required by the passenger cabin.

[0060] The present application provides a thermal management system control method, which includes the following steps: Step 100: Obtain the real-time ambient temperature of the thermal management system according to claim 4 to determine the environmental scene; the environmental scene includes a medium-high temperature scene, a low temperature scene, and an extreme cold scene; Step 101: Obtain the real-time thermal requirements of the battery, electric drive, and passenger compartment, and call the operating mode based on the determined control scenario.

[0061] When the ambient temperature is greater than the first threshold (15°C), it is a medium-high temperature scenario; when the ambient temperature is less than or equal to the first threshold (15°C) and greater than the second threshold (-15°C), it is a low temperature scenario; when the ambient temperature is less than or equal to the second threshold (-15°C), it is an extreme cold scenario.

[0062] The working mode can be found in the table;

[0063] The above system has 43 working modes, as follows: The first category: In medium- and high-temperature scenarios, when the battery needs to be cooled but the electric drive does not need heat dissipation, operating mode 1 is executed; In medium- and high-temperature scenarios, when the passenger compartment and battery require cooling but the electric drive does not require heat dissipation, operating mode 2 is executed; In medium- and high-temperature scenarios, when the passenger compartment and battery require cooling, and the electric drive requires heat dissipation, operating mode three is executed; When the passenger cabin needs cooling and the electric drive needs heat dissipation in medium and high temperature scenarios, operating mode 4 is executed; In medium- and high-temperature scenarios, when only the electric drive needs to dissipate heat, operating mode 5 is executed; In medium and high temperature scenarios, when the battery needs to be cooled and the electric drive needs to dissipate heat, operating mode six is ​​executed.

[0064] The second category; In low-temperature scenarios, when both the battery and electric drive need to dissipate heat, operating mode seven is executed; When the battery needs to be heated in low-temperature scenarios, if the air heat source meets the heating requirements, operating mode eight is executed; otherwise, operating mode nine is executed; When there is a high demand for battery heating in low or extremely cold conditions, or when both the passenger compartment and the battery need to be heated, operating mode 10 is executed; In low-temperature scenarios, when both the passenger compartment and the battery need to be heated, if the air heat source meets the heating requirements, operating mode 11 is executed; if not, operating mode 12 is executed; When the passenger cabin needs to be heated in a low-temperature scenario, if the air heat source meets the heating requirements, operating mode 13 is executed; if not, operating mode 14 is executed; In low-temperature or extremely cold scenarios, when the battery needs to be cooled and the passenger compartment needs to be heated, if the heat transferred from the battery by the refrigerant circuit meets the passenger compartment heating requirement, operating mode 15 is executed; otherwise, operating mode 16 is executed; In low temperature or extreme cold scenarios, when the battery needs to be cooled, the passenger compartment needs to be heated, and the electric drive needs to be cooled, and the electric drive coolant temperature is lower than the first set threshold, operating mode 17 is executed; In low temperature or extreme cold scenarios, when the passenger compartment and battery need to be heated and the electric drive needs to be cooled, if the residual heat of the electric drive meets the heating requirements, work mode 20 will be executed; if it does not meet the requirements, work mode 21 will be executed. In low-temperature scenarios, when the passenger compartment and battery require heating and the electric drive water circuit needs to store heat, if the air heat source meets the heating requirements, operating mode 18 is executed; if not, operating mode 19 is executed; when the electric drive coolant temperature exceeds the second set threshold, the system switches to operating mode 22; In low-temperature scenarios, when the passenger compartment and battery need to be heated and the electric drive needs to dissipate heat, if the air heat source meets the heating requirements, operating mode 22 is executed; if not, operating mode 23 is executed; In low-temperature or extremely cold scenarios, when the passenger compartment and battery need to be heated and the electric drive needs to be cooled, operating mode 24 is executed; In low-temperature or extreme-cold scenarios, when the passenger compartment and battery require heating and the electric drive requires cooling, and the electric drive coolant temperature is greater than a first set threshold, operating mode 25 is executed if the electric drive residual heat meets the heating requirements; otherwise, operating mode 26 is executed; In low-temperature or extremely cold scenarios, when the passenger compartment and battery need to be heated and the electric drive needs to be cooled, if the residual heat of the electric drive meets the heating requirements, operating mode 27 is executed; otherwise, operating mode 28 is executed; In low-temperature or extreme-cold scenarios, when the passenger compartment and battery need to be heated and the electric drive needs to be cooled, operating mode 29 is executed if the residual heat of the electric drive meets the heating requirements; otherwise, operating mode 30 is executed; In low-temperature or extreme-cold scenarios, when the passenger cabin needs to be heated and the electric drive needs to be cooled, if the residual heat of the electric drive meets the heating requirements, operating mode 33 is executed; otherwise, operating mode 34 is executed; In low-temperature or extremely cold scenarios, when the passenger cabin needs to be heated and the electric drive needs to be cooled, if the residual heat of the electric drive meets the heating requirements, operating mode 35 will be executed; otherwise, operating mode 36 will be executed; In low-temperature scenarios, when the passenger cabin needs to be heated and the electric drive needs to store heat, if the air heat source meets the heating requirements, operating mode 31 is executed; if not, operating mode 32 is executed; In low temperature scenarios, when the passenger compartment needs to be heated and the electric drive needs to be cooled, operating mode thirty-seven is executed.

[0065] The third category: In extremely cold weather, when the passenger compartment and battery need to be heated and the electric drive needs to be cooled, operating mode 20 will be executed if the residual heat of the electric drive meets the heating requirements; otherwise, operating mode 21 will be executed; In extremely cold weather, when the passenger compartment and battery need to be heated and the electric drive needs to be cooled, operating mode 24 is executed; In an extremely cold scenario, when the passenger compartment and battery require heating, the electric drive requires cooling, and the electric drive coolant temperature is greater than a first set threshold, operating mode 25 is executed if the electric drive residual heat meets the heating requirements, and operating mode 26 is executed if it does not. In extremely cold weather, when the passenger compartment and battery need to be heated and the electric drive needs to be cooled, if the residual heat of the electric drive meets the heating requirements, operating mode 27 will be executed; otherwise, operating mode 28 will be executed; In extremely cold weather, when the passenger compartment and battery need to be heated and the electric drive needs to be cooled, operating mode 29 will be executed if the residual heat of the electric drive meets the heating requirements; otherwise, operating mode 30 will be executed; In extremely cold weather, when the passenger cabin needs to be heated and the electric drive needs to be cooled, if the residual heat of the electric drive meets the heating requirements, operating mode 33 will be executed; otherwise, operating mode 34 will be executed; In extremely cold weather, when the passenger compartment needs to be heated and the electric drive needs to be cooled, if the residual heat of the electric drive meets the heating requirements, operating mode 35 will be executed; otherwise, operating mode 36 will be executed; In extremely cold weather, when the passenger compartment needs to be heated, the battery needs to be cooled, and the electric drive needs to be cooled, operating mode 38 is executed; In extremely cold conditions, when only the battery needs to be heated, operating mode thirty-nine is executed; In an extremely cold scenario, when only the passenger compartment needs to be heated, operating mode 40 is executed; In extremely cold weather, when the passenger compartment and battery need to be heated, the battery heating demand is high, and the electric drive is storing heat, operating mode 41 is executed; when the electric drive coolant temperature is greater than the second set threshold, the system switches to operating mode 24; In extremely cold weather, when the passenger compartment needs to be heated and the electric drive needs to store heat, operating mode 42 is executed; when the electric drive coolant temperature is greater than the second set threshold, the system switches to operating mode 33; In extremely cold conditions, when the passenger cabin needs to be heated and the electric drive needs to be cooled, operating mode 43 is executed.

[0066] In order to clearly explain the above modes and functions, the following description is made with reference to the accompanying drawings: Mode 1, the system conduction principle diagram is as follows Figure 2 The battery water circuit is activated: six-way solenoid valve 105 is controlled to conduction mode three, and the battery water pump is turned on. The refrigerant circuit is activated: the compressor is turned on, and its speed is adjusted based on the battery water inlet temperature. The large-diameter electronic expansion valve is fully opened; the second electronic expansion valve is opened, and its opening is controlled based on the battery cooler's overheating level. All other valves are closed. The electronic fan is turned on, and the fan speed of the air-cooled condenser 108 is controlled based on the refrigerant system pressure. This mode is suitable for scenarios where there is no passenger compartment cooling or heating requirement, the battery requires cooling, and the electric drive does not require heat dissipation.

[0067] Mode 2, the system conduction principle diagram is as follows Figure 3Battery water loop start: control six-way electromagnetic valve 105 in conduction mode three, battery water pump starts. Refrigerant loop start: compressor starts, adjust the speed according to the evaporating temperature and battery water inlet temperature; large diameter electronic expansion valve opens fully; the first electronic expansion valve opens, control the opening degree according to the evaporator superheat; the second electronic expansion valve opens, control the opening degree according to the battery chiller superheat; the rest of the valves are closed. Electronic fan starts, control the fan speed of the air-cooled condenser 108 according to the refrigerant system pressure. This mode is suitable for the scenario that the passenger cabin and the battery need refrigeration, and the electric drive does not need heat dissipation.

[0068] This mode shares the compressor for passenger cabin and battery refrigeration, effectively reducing the system space, system complexity and system cost.

[0069] Mode three, system conduction principle diagram as Figure 4 Battery water loop start: control six-way electromagnetic valve 105 in conduction mode three, battery water pump starts. Refrigerant loop start: compressor starts, adjust the speed according to the evaporating temperature and battery water inlet temperature; large diameter electronic expansion valve opens fully; the first electronic expansion valve opens, control the opening degree according to the evaporator superheat; the second electronic expansion valve opens, control the opening degree according to the battery chiller superheat; the rest of the valves are closed. Electric drive water loop start: control five-way electromagnetic valve 106 in conduction mode one, electric drive water pump starts. This mode is suitable for the scenario that the passenger cabin and the battery need refrigeration, and the electric drive needs heat dissipation. Electronic fan starts, control the electronic fan of the radiator according to the electric drive outlet water temperature to adjust the speed; control the fan of the air-cooled condenser 108 according to the refrigerant loop pressure to adjust the speed. In this mode, the passenger cabin and the battery refrigeration share the compressor.

[0070] Mode four, system conduction principle diagram as Figure 5 Refrigerant loop start: compressor starts, adjust the speed according to the evaporating temperature; large diameter electronic expansion valve opens fully; the first electronic expansion valve opens, control the opening degree according to the evaporator superheat; the rest of the valves are closed. Electric drive water loop start: control five-way electromagnetic valve 106 in conduction mode one, six-way electromagnetic valve 105 in conduction mode three, electric drive water pump starts. Electronic fan starts, control the electronic fan of the radiator according to the electric drive outlet water temperature to adjust the speed, control the fan of the air-cooled condenser 108 according to the refrigerant loop pressure to adjust the speed. This mode is suitable for the scenario that the passenger cabin needs refrigeration, the battery has no refrigeration and heating demand, and the electric drive needs heat dissipation.

[0071] Mode five, system conduction principle diagram as Figure 6 Electric drive water loop start: control five-way electromagnetic valve 106 in conduction mode one, six-way electromagnetic valve 105 in conduction mode three, electric drive water pump starts. Electronic fan starts, control the electronic fan of the radiator according to the electric drive outlet water temperature to adjust the speed. This mode is suitable for the scenario that the passenger cabin and the battery have no refrigeration and heating demand, and the electric drive needs heat dissipation.

[0072] Mode 6, the system conduction principle diagram is as follows Figure 7 , the battery water circuit is started: the six-way solenoid valve 105 is controlled to be in conduction mode three, and the battery water pump is turned on. The refrigerant circuit is started: the compressor is turned on, and the speed is adjusted according to the battery water inlet temperature; the large-diameter electronic expansion valve is fully opened; the second electronic expansion valve is turned on, and the opening is controlled according to the overheating of the battery cooler; the remaining valves are closed. The electric drive water circuit is started: the five-way solenoid valve 106 is controlled to be in conduction mode one, and the electric drive water pump is turned on. The electronic fan is turned on, and the electronic fan of the radiator is controlled to adjust the speed according to the electric drive outlet water temperature, and the fan of the air-cooled condenser 108 is controlled to adjust the speed according to the refrigerant circuit pressure. This mode is suitable for scenarios where there is no cooling or heating demand in the passenger compartment, the battery needs to be cooled, and the electric drive needs to dissipate heat.

[0073] Mode 7, the system conduction principle diagram is as follows Figure 8 The battery water circuit is activated by controlling the six-way solenoid valve 105 to conduction mode 5, turning on the battery water pump. The electric drive water circuit is activated by controlling the five-way solenoid valve 106 to conduction mode 1, turning on the electric drive water pump. The electronic fan is activated, controlling the radiator fan speed based on the battery water inlet temperature. This mode is suitable for scenarios where there is no need for cabin cooling or heating, and the ambient temperature is low, allowing the battery and electric drive to share a common radiator.

[0074] In this mode, battery cooling does not require starting the refrigerant circuit, and the battery shares a radiator with the electric drive, effectively reducing system energy consumption.

[0075] Mode 8, the system conduction principle diagram is as follows Figure 9 The battery water circuit is activated: six-way solenoid valve 105 is controlled to conduction mode 1, and the battery water pump is turned on. The refrigerant circuit is activated, and the air-source heat pump is enabled: the compressor is turned on, and the speed is adjusted according to the battery inlet water temperature; the large-diameter electronic expansion valve is opened, and the opening is adjusted according to the superheat of the air-cooled condenser; the second refrigerant shut-off valve is opened; and all other valves are closed. The electronic fan is turned on, and the fan of the air-cooled condenser 108 is controlled to adjust its speed according to the refrigerant circuit pressure. This mode is suitable for environments with an ambient temperature of -15-15°C, no passenger compartment cooling or heating requirements, and battery heating requirements.

[0076] In this mode, when the heat of the air source heat pump is not enough to meet the battery heating demand, the second PTC is activated to heat the battery together with the air source heat pump, which is mode nine. The system conduction principle diagram is as follows: Figure 9 .

[0077] Mode 10, the system conduction principle diagram is as follows Figure 10Battery water circuit activation: Controls six-way solenoid valve 105 to conduction mode 1, activates the battery water pump, and activates the second PTC. Heater water circuit activation: Connects the first and third ports of the three-way valve, activates the heater water pump, and activates the first PTC. This mode is suitable for scenarios requiring high battery heating requirements or when both the passenger compartment and the battery require heating.

[0078] Mode 11, the system conduction principle diagram is as follows Figure 11 , the battery water circuit is started: the six-way solenoid valve 105 is controlled to be in conduction mode 1, the battery water pump is turned on, and the second PTC is turned on. The refrigerant circuit is started, and the air source heat pump is enabled: the compressor is turned on, and the speed is adjusted according to the water outlet temperature of the water-cooled condenser; the large-diameter electronic expansion valve is turned on, and the opening is adjusted according to the superheat of the air-cooled condenser; the second refrigerant shut-off valve is opened; and the remaining valves are closed. The electronic fan is turned on, and the fan of the air-cooled condenser 108 is controlled to adjust the speed according to the refrigerant circuit pressure. The warm air water circuit is started: the first and second interfaces of the three-way valve are connected, and the warm air water pump is turned on. This mode is suitable for scenarios where the ambient temperature is -15-15℃ and the passenger compartment and battery need to be heated.

[0079] In this mode, when the heat of the air source heat pump is not enough to meet the heating demand of the passenger compartment, the first PTC is activated to heat the passenger compartment together with the air source heat pump, which is mode 12. The system conduction principle diagram is as follows: Figure 11 .

[0080] Mode 13, the system conduction principle diagram is as follows Figure 12 The refrigerant circuit is activated, and the air-source heat pump is enabled: the compressor starts, adjusting its speed based on the water temperature at the water-cooled condenser outlet; the large-diameter electronic expansion valve opens, adjusting its opening based on the superheat of the air-cooled condenser; the second refrigerant shut-off valve opens; and all other valves are closed. The electronic fan starts, controlling the fan in air-cooled condenser 108 and adjusting its speed based on the refrigerant circuit pressure. The heater water circuit is activated: the first and second ports of the three-way valve are connected, and the heater water pump starts. This mode is suitable for environments with an ambient temperature of -15°C to 15°C and where passenger compartment heating is required.

[0081] In this mode, when the heat of the air source heat pump is not enough to meet the heating demand of the passenger compartment, the first PTC is activated to heat the passenger compartment together with the air source heat pump, which is mode 14. The system conduction principle diagram is as follows: Figure 12 .

[0082] Mode 15, the system conduction principle diagram is as follows Figure 13, the battery water circuit is started: the six-way solenoid valve 105 is controlled to be in conduction mode three, and the battery water pump is turned on. The refrigerant circuit is started, and the battery water source heat pump is enabled: the compressor is turned on, and the speed is adjusted according to the battery inlet water temperature; the first refrigerant shut-off valve is opened; the second electronic expansion valve is opened, and the opening is controlled according to the overheating of the battery cooler; the remaining valves are closed. The electronic fan is turned off. The warm air water circuit is started: the first and second interfaces of the three-way valve are connected, and the warm air water pump is turned on. This mode is suitable for scenarios where the battery needs to be cooled and the passenger compartment needs to be heated. In this mode, the water source heat pump is not limited by the ambient temperature. The heat pump function can still be enabled in extremely low temperature environments to transfer the heat generated by the battery to the passenger compartment, saving energy and reducing consumption.

[0083] In this mode, when the heat of the water source heat pump is not enough to meet the heating demand of the passenger compartment, the first PTC is activated to heat the passenger compartment together with the water source heat pump, which is mode 16. The system conduction principle diagram is as follows: Figure 13 .

[0084] Mode 17, the system conduction principle diagram is as follows Figure 14 The battery water circuit is activated: the six-way solenoid valve 105 is controlled to conduction mode four, and the battery water pump is turned on. The refrigerant circuit is activated, and the water-source heat pump is activated: the compressor is turned on, and the speed is adjusted according to the water temperature at the water-cooled condenser outlet. The first refrigerant shutoff valve is opened; the second electronic expansion valve is opened, and the opening is controlled according to the battery cooler superheat; all other valves are closed. The electric drive water circuit is activated: the five-way solenoid valve 106 is controlled to conduction mode one, and the electric drive water pump is turned on. The electronic fan is turned on, and the radiator's electronic fan speed is adjusted according to the water temperature at the electric drive outlet. The heater water circuit is activated: the first and second ports of the three-way valve are connected, and the heater water pump is turned on. This mode is suitable for various scenarios: when the battery requires cooling, the passenger compartment requires heating, and the electric drive does not require it, and the passenger compartment is insufficient to dissipate battery heat, and the radiator is used to dissipate excess battery heat, a battery water-source heat pump is used in this scenario; when the battery requires heating, the passenger compartment requires heating, and the electric drive requires cooling, a battery water-source heat pump is used in this scenario.

[0085] In this mode, the water source heat pump is not limited by the ambient temperature. The heat pump function can still be enabled in extremely low temperature environments to transfer the heat generated by the battery / electric drive to the passenger compartment, saving energy and reducing consumption.

[0086] Mode 18, the system conduction principle diagram is as follows Figure 15The battery water circuit is started: the six-way solenoid valve 105 is controlled to be in conduction mode one, the battery water pump is turned on, and the second PTC is turned on. The refrigerant circuit is started, and the air source heat pump is activated: the compressor is turned on, and the speed is adjusted according to the water outlet temperature of the water-cooled condenser; the large-diameter electronic expansion valve is opened, and the opening is adjusted according to the superheat of the air-cooled condenser; the second refrigerant shut-off valve is opened; and the remaining valves are closed. The electric drive water circuit is started: the five-way solenoid valve 106 is controlled to be in conduction mode three, the electric drive water pump is turned on, and the electric drive water circuit stores heat. The electronic fan is turned on, and the fan of the air-cooled condenser 108 is controlled to adjust its speed according to the refrigerant circuit pressure. The warm air water circuit is started: the first and second interfaces of the three-way valve are connected, and the warm air water pump is turned on. This mode is suitable for scenarios where the ambient temperature is -15-15°C, the passenger compartment and battery need to be heated, and the electric drive water circuit needs to store heat.

[0087] In this mode, when the heat of the air source heat pump is not enough to meet the heating demand of the passenger compartment, the first PTC is activated to heat the passenger compartment together with the air source heat pump, which is mode 19. The system conduction principle diagram is as follows: Figure 15 .

[0088] Mode 20, the system conduction principle diagram is as follows Figure 16 The battery water circuit is activated: the six-way solenoid valve 105 is controlled to conduction mode 2, the battery water pump is turned on, and the second PTC is turned on. The refrigerant circuit is activated, and the electric drive water source heat pump is activated: the compressor is turned on, and the speed is adjusted according to the water temperature of the water-cooled condenser outlet; the first refrigerant shut-off valve is opened; the second electronic expansion valve is opened, and the opening is controlled according to the superheat of the battery cooler; the remaining valves are closed. The electric drive water circuit is activated: the five-way solenoid valve 106 is controlled to conduction mode 3, the electric drive water pump is turned on, and the electric drive water circulates into the battery cooler. The heater water circuit is activated: the first and second ports of the three-way valve are connected, and the heater water pump is turned on. This mode is suitable for scenarios where the passenger compartment and battery need to be heated and the electric drive needs to dissipate heat. In this mode, the water source heat pump is not limited by the ambient temperature. The heat pump function can still be activated in extremely low temperature environments, transferring the heat generated by the electric drive to the passenger compartment, saving energy and reducing consumption.

[0089] In this mode, when the heat of the water source heat pump is not enough to meet the heating demand of the passenger compartment, the first PTC is activated to heat the passenger compartment together with the water source heat pump, which is mode 21. The system conduction principle diagram is as follows: Figure 16 .

[0090] Mode 22, the system conduction principle diagram is as follows Figure 17The battery water circuit is activated: six-way solenoid valve 105 is placed in conduction mode five, and the battery water pump is turned on. The refrigerant circuit is activated, and the air source heat pump is enabled: the compressor is turned on, and the speed is adjusted according to the water outlet temperature of the water-cooled condenser; the large-diameter electronic expansion valve is opened, and the opening is adjusted according to the superheat of the air-cooled condenser; the second refrigerant shut-off valve is opened; and all other valves are closed. The electric water circuit is activated: five-way solenoid valve 106 is placed in conduction mode three, and the electric water pump is turned on, allowing electric water to flow into the battery circuit to heat the battery. The electronic fan is turned on, and the fan in the air-cooled condenser 108 is controlled to adjust its speed according to the refrigerant circuit pressure. The heater water circuit is activated: the first and second ports of the three-way valve are connected, and the heater water pump is turned on. This mode is suitable for environments with an ambient temperature of -15-15°C, where the passenger compartment and battery require heating, and the electric water circuit dissipates heat. In this mode, the electric water directly heats the battery, eliminating the need to activate the battery's second PTC, effectively utilizing waste heat and achieving greater system energy efficiency.

[0091] In this mode, when the heat of the air source heat pump is not enough to meet the heating demand of the passenger compartment, the first PTC is activated to heat the passenger compartment together with the air source heat pump, which is mode 23. The system conduction principle diagram is as follows: Figure 17 .

[0092] Mode 24, the system conduction principle diagram is as follows Figure 18 , the battery water circuit is started: the six-way solenoid valve 105 is controlled to be in conduction mode five, and the battery water pump is turned on. The electric drive water circuit is started: the five-way solenoid valve 106 is controlled to be in conduction mode three, the electric drive water pump is turned on, and the electric drive water is connected to the battery circuit to heat the battery. The heater water circuit is started: the first and second interfaces of the three-way valve are connected, the heater water pump is turned on, and the first PTC is turned on. This mode is suitable for scenarios with extremely low ambient temperatures, where the passenger compartment and battery need to be heated and the electric drive water circuit needs to dissipate heat. In this mode, the electric drive water directly heats the battery, and there is no need to turn on the second PTC of the battery, which effectively utilizes waste heat and makes the system more energy-efficient.

[0093] Mode 25, the system conduction principle diagram is as follows Figure 19The battery water circuit is activated: six-way solenoid valve 105 is controlled to conduction mode four, and the battery water pump is turned on. The refrigerant circuit is activated, and the electric water-source heat pump is enabled: the compressor is turned on, and the speed is adjusted according to the water temperature at the water-cooled condenser outlet; the first refrigerant shut-off valve is opened; the second electronic expansion valve is opened, and the opening is controlled according to the superheat of the battery cooler; all other valves are closed. The electric water circuit is activated: five-way solenoid valve 106 is controlled to conduction mode three, and the electric water pump is turned on. Electric water is fed into the battery circuit to heat the battery and into the battery cooler for use in the water-source heat pump. The heater water circuit is activated: the first and second ports of the three-way valve are connected, and the heater water pump is turned on. This mode is suitable for scenarios where the passenger compartment and battery require heating, and the electric water circuit dissipates heat. In this mode, waste heat from the electric drive directly heats the battery, eliminating the need to activate the battery's second positive temperature control (PTC). Simultaneously, waste heat from the electric drive is used to power the water-source heat pump and heat the passenger compartment, eliminating the need to activate the first positive temperature control (PTC), resulting in a more energy-efficient system.

[0094] In this mode, when the heat of the water source heat pump is not enough to meet the heating demand of the passenger compartment, the first PTC is activated to heat the passenger compartment together with the water source heat pump, which is mode 26. The system conduction principle diagram is as follows: Figure 19 .

[0095] Mode 27, the system conduction principle diagram is as follows Figure 20 , the battery water circuit is started: the six-way solenoid valve 105 is controlled to be in conduction mode one, the battery water pump is turned on, and the second PTC of the battery is turned on. The electric drive water circuit is started: the five-way solenoid valve 106 is controlled to be in conduction mode two, the electric drive water pump is turned on, and the electric drive water is connected to the first plate exchanger to heat the passenger compartment. The heater water circuit is started: the first and second interfaces of the three-way valve are connected, and the heater water pump is turned on. This mode is suitable for scenarios where the passenger compartment and battery need to be heated and the electric drive water circuit needs to dissipate heat. In this mode, the waste heat of the electric drive directly heats the passenger compartment, and there is no need to turn on the first PTC, making the system more energy-efficient.

[0096] In this mode, when the residual heat of the electric drive is not enough to meet the heating demand of the passenger compartment, the first PTC is activated to heat the passenger compartment together with the residual heat of the electric drive, which is mode 28. The system conduction principle diagram is as follows: Figure 20 .

[0097] Mode 29, the system conduction principle diagram is as follows Figure 21 , the battery water circuit is started: the six-way solenoid valve 105 is controlled to be in conduction mode five, and the battery water pump is turned on. The electric drive water circuit is started: the five-way solenoid valve 106 is controlled to be in conduction mode two, the electric drive water pump is turned on, and the electric drive water is first connected to the first plate exchanger to heat the passenger compartment; then connected to the battery circuit to heat the battery. The heater water circuit is started: the first and second interfaces of the three-way valve are connected, and the heater water pump is turned on. This mode is suitable for scenarios where the passenger compartment and battery need to be heated and the electric drive water circuit dissipates heat. In this mode, the waste heat of the electric drive directly heats the passenger compartment and the battery, and there is no need to turn on the first PTC and the second PTC, making the system more energy-efficient.

[0098] In this mode, when the residual heat of the electric drive is not enough to meet the battery heating demand, the second PTC is activated to heat the battery together with the residual heat of the electric drive, which is mode 30. The system conduction principle diagram is as follows: Figure 21 .

[0099] Mode 31, the system conduction principle diagram is as follows Figure 22 , the refrigerant circuit is started, and the air source heat pump is enabled: the compressor is turned on, and the speed is adjusted according to the water outlet temperature of the water-cooled condenser; the large-diameter electronic expansion valve is opened, and the opening is adjusted according to the superheat of the air-cooled condenser; the second refrigerant shut-off valve is opened; and the remaining valves are closed. The electric drive water circuit is started: the five-way solenoid valve 106 is controlled to be in conduction mode three, the electric drive water pump is turned on, and the electric drive water circuit stores heat. The electronic fan is turned on, and the fan speed is controlled according to the refrigerant system pressure. The warm air water circuit is started: the first and second interfaces of the three-way valve are connected, and the warm air water pump is turned on. This mode is suitable for scenarios where the ambient temperature is less than -15°C, the passenger compartment needs to be heated, and the electric drive stores heat.

[0100] In this mode, when the heat of the air source heat pump is not enough to meet the heating demand of the passenger compartment, the first PTC is activated to heat the passenger compartment together with the air source heat pump, which is mode 32. The system conduction principle diagram is as follows: Figure 22 .

[0101] Mode 33, the system conduction principle diagram is as follows Figure 23 . The refrigerant circuit is started, and the electric drive water source heat pump is enabled: the compressor is turned on, and the speed is adjusted according to the outlet water temperature of the water-cooled condenser; the first refrigerant shut-off valve is opened; the second electronic expansion valve is opened, and the opening is controlled according to the overheating of the battery cooler; the remaining valves are closed. The electric drive water circuit is started: the five-way solenoid valve 106 is controlled to be in conduction mode three, the electric drive water pump is turned on, and the electric drive water circulates into the battery cooler. The warm air water circuit is started: the first and second interfaces of the three-way valve are connected, and the warm air water pump is turned on. This mode is suitable for scenarios where the passenger compartment needs to be heated and the electric drive needs to dissipate heat. In this mode, the water source heat pump is not limited by the ambient temperature. The heat pump function can still be enabled in extremely low temperature environments to transfer the heat generated by the electric drive to the passenger compartment, saving energy and reducing consumption.

[0102] In this mode, when the heat of the water source heat pump is not enough to meet the heating demand of the passenger compartment, the first PTC is activated and heats the passenger compartment together with the water source heat pump, which is mode 34. The system conduction principle diagram is as follows: Figure 23 .

[0103] Mode 35, the system conduction principle diagram is as follows Figure 24The electric drive water circuit is activated: The five-way solenoid valve 106 is placed in conduction mode 2, the electric drive water pump is activated, and electric drive water is fed into the first plate heat exchanger to heat the passenger compartment. The heater water circuit is activated: The first and second ports of the three-way valve are connected, and the heater water pump is activated. This mode is suitable for scenarios where both the passenger compartment and the electric drive water circuit are cooling. In this mode, waste heat from the electric drive directly heats the passenger compartment, eliminating the need to activate the first PTC, resulting in a more energy-efficient system.

[0104] In this mode, when the residual heat of the electric drive is not enough to meet the heating demand of the passenger compartment, the first PTC is activated to heat the passenger compartment together with the residual heat of the electric drive, which is mode 36. The system conduction principle diagram is as follows: Figure 24 .

[0105] Mode 37, the system conduction principle diagram is as follows Figure 25 , the refrigerant circuit is started, and the air source heat pump is enabled: the compressor is turned on, and the speed is adjusted according to the outlet water temperature of the water-cooled condenser; the large-diameter electronic expansion valve is opened, and the opening is adjusted according to the superheat of the air-cooled condenser; the second refrigerant shut-off valve is opened; and the remaining valves are closed. The electric drive water circuit is started: the five-way solenoid valve 106 is controlled to be in conduction mode one, and the electric drive water pump is turned on. The electronic fan is turned on, and the fan speed is controlled according to the outlet water temperature of the electric drive. The warm air water circuit is started: the first and second interfaces of the three-way valve are connected, and the warm air water pump is turned on. This mode is suitable for scenarios where the ambient temperature is -15-15℃, the passenger compartment needs to be heated, and the electric drive needs to dissipate heat.

[0106] Mode 38, the system conduction principle diagram is as follows Figure 26 . The battery water circuit is started: the six-way solenoid valve 105 is controlled to be in conduction mode three, the battery water pump is turned on, and the battery coolant is the same as the battery cooler. The refrigerant circuit is started, and the battery water source heat pump is enabled: the compressor is turned on, and the speed is adjusted according to the outlet water temperature of the water-cooled condenser; the first refrigerant stop valve is opened; the second electronic expansion valve is opened, and the opening is controlled according to the overheating of the battery cooler; the remaining valves are closed. The electric drive water circuit is started: the five-way solenoid valve 106 is controlled to be in conduction mode one, and the electric drive water pump is turned on. The fan is turned on, and the speed is adjusted according to the outlet water temperature of the electric drive. The warm air water circuit is started: the first and second interfaces of the three-way valve are connected, and the warm air water pump is turned on. This mode is suitable for scenarios where the passenger compartment needs to be heated, the battery needs to be cooled, and the electric drive needs to dissipate heat. In this mode, the water source heat pump is not limited by the ambient temperature. The heat pump function can still be enabled in extremely low temperature environments to transfer the heat generated by the battery to the passenger compartment, saving energy and reducing consumption.

[0107] Mode 39, the system conduction principle diagram is as follows Figure 27 Battery water circuit activation: Controls the six-way solenoid valve 105 to conduction mode 1, activates the battery water pump, and activates the battery's second PTC. This mode is suitable for scenarios where extremely low-temperature batteries require heating but the passenger compartment and electric drive do not.

[0108] Mode 40, the system conduction principle diagram is as followsFigure 28 The heating water circuit starts: the first and second interfaces of the three-way valve are connected, the heating water pump is turned on, and the first PTC is turned on. This mode is suitable for extremely low ambient temperature and the passenger compartment needs to be heated. Mode 41, the system conduction principle diagram is as follows Figure 29 , the battery water circuit starts: the six-way solenoid valve 105 is controlled to be in conduction mode one, the battery water pump is turned on, and the second PTC is turned on. The heater water circuit starts: the first and third interfaces of the three-way valve are connected, the heater water pump is turned on, and the first PTC is turned on. The electric drive water circuit starts: the five-way solenoid valve 106 is controlled to be in conduction mode three, the electric drive water pump is turned on, and the electric drive water circuit stores heat. This mode is suitable for scenarios where the battery needs to be heated and the heating demand is relatively large, or both the passenger compartment and the battery need to be heated, and the electric drive stores heat.

[0109] Mode 42, the system conduction principle diagram is as follows Figure 30 The heater water circuit is activated: The first and second ports of the three-way valve are connected, the heater water pump is turned on, and the first PTC is activated. The electric drive water circuit is activated: The five-way solenoid valve 106 is controlled to conduction mode three, the electric drive water pump is turned on, and the electric drive water circuit stores heat. This mode is suitable for extremely low ambient temperatures, when the passenger compartment requires heating, there is no need for battery thermal management, and the electric drive stores heat.

[0110] Mode 43, the system conduction principle diagram is as follows Figure 31 . The refrigerant circuit is started, and the electric drive water source heat pump is enabled: the compressor is turned on, and the speed is adjusted according to the outlet water temperature of the water-cooled condenser; the first refrigerant shut-off valve is opened; the second electronic expansion valve is opened, and the opening is controlled according to the overheating of the battery cooler; the remaining valves are closed. The electric drive water circuit is started: the six-way solenoid valve 105 is controlled to be in conduction mode two, and the five-way solenoid valve 106 is controlled to be in conduction mode one. The electric drive water pump is turned on, and the electric drive water is connected in series to the battery cooler for the water source heat pump. The fan is turned on, and the speed is adjusted according to the outlet water temperature of the electric drive. This mode is suitable for scenarios where the passenger compartment needs to be heated and the electric drive water circuit needs to dissipate heat. In this mode, the waste heat of the electric drive is used for the water source heat pump and heating the passenger compartment. There is no need to turn on the first PTC, and the system is more energy-efficient.

[0111] These operating modes meet the thermal management needs of the passenger compartment, battery, and electric drive in various scenarios, from extremely low to high temperatures. The appropriate operating mode can be selected based on vehicle heating requirements and ambient temperature. This refined control reduces system energy consumption and improves passenger compartment comfort. Multiple heat utilization modes are available for winter heating.

[0112] When the ambient temperature is greater than 15°C and the battery or passenger compartment needs to be heated, an air source heat pump or electric drive waste heat can be used for direct heating without turning on the PTC. When the ambient temperature is -15℃<≤15℃ and the battery or passenger compartment needs to be heated, air source heat pump, water source heat pump or electric drive waste heat can be used for direct heating. PTC can provide additional heating when the heating demand is high. When the ambient temperature is ≤-15°C and the battery or passenger compartment needs to be heated, PTC heating, water source heat pump, direct heating with electric drive waste heat, or a combination of the three can be selected.

[0113] The system principle architecture is combined with the control method to fully utilize the waste heat of the electric drive. When the temperature of the electric drive coolant is relatively low and cannot directly heat the battery and passenger compartment, the water source heat pump mode can be used for heating; even in extremely cold environments, when the electric drive coolant water reaches a certain temperature, the water source heat pump can still be enabled, which improves energy utilization and effectively reduces the system heating power consumption.

[0114] The following is an explanation of the issues raised in this application: Through a highly integrated system architecture, the present invention integrates the air conditioning system, battery temperature control system, and electric drive cooling system into a unified thermal management circuit, sharing core components (such as compressors, fans, and electronic expansion valves). The refrigerant circuit and cooling water circuit are dynamically coupled via multi-way valves (six-way and five-way valves). For example, by switching between conduction modes (e.g., modes 1 to 5), the six-way valve connects the battery water circuit and the electric drive water circuit in series, allowing waste heat from the electric drive to be directly used for battery heating or passenger compartment heating (e.g., modes 17 and 29). Furthermore, the air-cooled condenser circuit and the water-source heat pump circuit share a common compressor, avoiding the redundant configuration of separate compressors in traditional solutions. This design not only reduces the number of components (e.g., only one set of compressors and fans is required), but also achieves seamless integration of cooling, heating, and heat dissipation functions through the synergistic effect of the water-cooled condenser 102 and the plate heat exchanger. For example, mode 15 transfers waste heat from the battery to the passenger compartment via a water-source heat pump, while mode 20 directly heats the battery by connecting the electric drive water circuit in series with the battery circuit, demonstrating the high degree of integration of functional modules.

[0115] The present invention has designed 43 working modes, covering all scenarios such as high temperature, low temperature, and extreme cold, and uses sensors (such as electric drive water temperature sensor and battery water temperature sensor) to monitor the ambient temperature and component requirements in real time, and dynamically call the optimal mode. For example, in the mode under medium and high temperature scenarios, the system prioritizes cooling through the refrigerant circuit and using the electric drive waste heat to store heat; in the mode under low temperature scenarios, a combination of air source heat pump and water source heat pump or direct supply of electric drive waste heat (mode) is used; in extreme cold scenarios, efficient heating is achieved through a combination of electric drive waste heat and PTC or a water source heat pump. The control unit adjusts the compressor speed, electronic expansion valve opening and fan speed according to parameters such as evaporation temperature and superheat to achieve precise control. For example, in mode seventeen, the electric drive water circuit and the battery circuit are connected in series, and the compressor raises the low-temperature waste heat to the battery heating requirement temperature, while also providing heat to the passenger compartment, avoiding energy waste in a single mode.

[0116] At low ambient temperatures, the heating efficiency of air-source heat pumps decreases significantly. Due to the low humidity content of low-temperature air, the compressor intake volume decreases, resulting in insufficient heating capacity. In extremely cold conditions (e.g., below -15°C), the air heat source may completely fail, preventing the heat pump from operating. To address this issue, this technology integrates the battery cooling branch with the compressor. In low-temperature scenarios, heat from the electric drive water circuit (even when the electric drive coolant temperature falls below a first design threshold) is transferred to the refrigerant circuit for heating. For example, in operating mode 15, when the air heat source in the air-cooled condensing branch is insufficient, the system prioritizes the use of electric drive waste heat, raising it to a usable temperature via compressor 101, replacing or supplementing the traditional heat pump. Furthermore, in extremely cold conditions, the system utilizes a water-source heat pump (water-cooled condenser 102) in conjunction with the electric drive waste heat, combined with PTC assistance, to ensure that even if the air heat pump fails, the passenger compartment and battery heating requirements can still be maintained.

[0117] In existing technologies, electric drive waste heat is typically only directly utilized when the coolant temperature is high (such as in summer). In low-temperature operating conditions (such as winter), the waste heat cannot be recovered due to insufficient temperature, resulting in low energy utilization. This technology overcomes this limitation by integrating waste heat from multiple sources. When the electric drive coolant temperature falls below a first design threshold, the system transfers the low-temperature waste heat from the electric drive water circuit to compressor 101 via the battery cooling branch. Leveraging the refrigerant circuit's pressure and temperature boosting capabilities, this waste heat is converted into a usable heat source. For example, in operating mode 17, the electric drive water circuit and the battery water circuit are connected in series, with the compressor raising the low-temperature waste heat to the required temperature for battery heating while also providing heat for the passenger compartment. Furthermore, in extremely cold conditions, the system further integrates the electric drive waste heat with a water-source heat pump via a three-way valve circuit, enabling waste heat recovery under all operating conditions and significantly improving energy utilization. This design overcomes the traditional limitation of "only utilizing waste heat at high temperatures" and ensures efficient recovery of electric drive waste heat even in low-temperature environments.

[0118] The present application also provides a vehicle, which includes the above thermal management system and can achieve the effects described above.

[0119] The present application also provides a thermal management system control device, which may be a device with data processing capabilities, such as a personal computer (PC), a laptop computer, or a server.

[0120] In an embodiment of the present application, a thermal management system control device may include a processor, a memory, a communication interface, and a communication bus.

[0121] The communication bus may be of any type and is used to interconnect the processor, memory, and communication interface.

[0122] Communication interfaces include input / output (I / O) interfaces, physical interfaces, and logical interfaces. These interfaces interconnect components within the thermal management system control device, as well as interfaces that connect the thermal management system control device to other devices (such as other computing devices or user devices). Physical interfaces can include Ethernet, fiber optic, and ATM interfaces; user devices can include displays and keyboards.

[0123] The memory can be various types of storage media, such as random access memory (RAM), read-only memory (ROM), non-volatile RAM (NVRAM), flash memory, optical storage, hard disk, programmable ROM (PROM), erasable PROM (EPROM), electrically erasable PROM (EEPROM), etc.

[0124] The processor may be a general-purpose processor that can invoke a thermal management system control program stored in a memory and execute the thermal management system control method provided in the embodiments of the present application. For example, the general-purpose processor may be a central processing unit (CPU). The method executed when the thermal management system control program is invoked can be referenced in the various embodiments of the thermal management system control method of the present application and will not be further described here.

[0125] An embodiment of the present application also provides a computer-readable storage medium.

[0126] The computer-readable storage medium of the present application stores a thermal management system control program, wherein when the thermal management system control program is executed by a processor, the steps of the thermal management system control method as described above are implemented.

[0127] In the description of this application, it should be noted that the terms "upper" and "lower" and the like indicate orientations or positional relationships based on the orientations or positional relationships shown in the accompanying drawings, and are intended only to facilitate the description of this application and simplify the description, and are not intended to indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation. Therefore, they should not be understood as limitations on this application. Unless otherwise expressly specified and limited, the terms "installed," "connected," and "connected" should be understood in a broad sense. For those of ordinary skill in the art, the specific meanings of the above terms in this application can be understood based on the specific circumstances.

[0128] It should be noted that, in this application, relational terms such as "first" and "second" are used only to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply any actual relationship or order between these entities or operations. Moreover, the terms "include", "comprise" or any other variants thereof are intended to cover non-exclusive inclusion, so that a process, method, article or device comprising a series of elements includes not only those elements, but also other elements not explicitly listed, or also includes elements inherent to such process, method, article or device. In the absence of further restrictions, an element defined by the sentence "comprising a ..." does not exclude the presence of other identical elements in the process, method, article or device comprising the element.

[0129] The foregoing is merely a list of specific embodiments of the present application, intended to enable those skilled in the art to understand or implement the present application. Various modifications to these embodiments will be readily apparent to those skilled in the art, and the general principles defined herein may be implemented in other embodiments without departing from the spirit or scope of the present application. Therefore, the present application is not limited to the embodiments shown herein, but is intended to conform to the broadest scope consistent with the principles and novel features of the present application.

Claims

1. A thermal management system, characterized in that: It includes: A refrigerant circuit comprising a main branch having a compressor (101), and an air-cooled condensing branch and a battery refrigeration branch connected in parallel with the main branch; A cooling water circuit, comprising an electric drive water circuit, a battery water circuit and an air conditioning and heating water circuit, wherein the electric drive water circuit, the battery water circuit and the air conditioning and heating water circuit are connected via a six-way solenoid valve (105), a five-way solenoid valve (106) and a three-way valve circuit; A control unit is used for sending heat from the electric drive water circuit to the compressor (101) through the battery cooling branch for heating when the air heat source of the air cooling condensation branch is insufficient and the electric drive coolant temperature is less than a first design threshold under heating demand, so as to provide heat required by the passenger compartment and the battery.

2. The thermal management system according to claim 1, wherein: The main branch comprises a circuit connected in sequence to the outlet of the compressor (101), a second PT sensor, a water-cooled condenser (102), a third PT sensor, a first refrigerant shut-off valve, a fourth PT sensor, a first electronic expansion valve, an evaporator (103), a one-way valve, and a gas-liquid separator (104); the gas-liquid separator (104) is connected to the inlet of the compressor (101), and the first PT sensor is provided therebetween; The battery cooling branch has two ends connected to the fourth PT sensor and the gas-liquid separator (104) respectively, and includes a second electronic expansion valve and a battery refrigerator (107) connected in sequence; The air-cooled condensing branch comprises a large-diameter electronic expansion valve, an air-cooled condenser (108), and a one-way valve connected in sequence; the large-diameter electronic expansion valve is connected to a third PT sensor, and the one-way valve of the air-cooled condensing branch is connected to a fourth PT sensor; a second refrigerant stop valve is further provided between the air-cooled condenser (108) and the one-way valve, and the second refrigerant stop valve is connected to the gas-liquid separator (104).

3. The thermal management system according to claim 2, wherein: The electric drive water circuit comprises an electric drive water pump, an electric drive, a five-way solenoid valve (106) and a radiator connected in sequence; the electric drive water outlet is connected to the second interface of the five-way solenoid valve (106), the fourth interface of the five-way solenoid valve (106) is connected to the water inlet of the first plate heat exchange side, the water outlet of the first plate heat exchange side is connected to the third interface of the five-way solenoid valve (106), the first interface of the five-way solenoid valve (106) is connected to the water inlet of the radiator, and the radiator water outlet is connected to the sixth interface of the six-way solenoid valve (105) after merging with the fifth interface of the five-way solenoid valve (106); The battery water circuit comprises a six-way solenoid valve (105), a battery water pump, a second PTC, and a battery connected in sequence; the second PTC is connected in parallel with a second plate changer; the fifth interface of the six-way solenoid valve (105) is connected to the water inlet of the electric drive water pump, and the electric drive inlet and outlet water paths are equipped with an electric drive inlet water temperature sensor and an electric drive outlet water temperature sensor; the battery outlet is connected to the second interface of the six-way solenoid valve (105), the third interface of the six-way solenoid valve (105) is connected to the water inlet of the battery cooler (107), the battery cooler (107) outlet is connected to the fourth interface of the six-way solenoid valve (105), and the battery cooler (107) outlet water path is equipped with a battery cooler outlet water temperature sensor; the first interface of the six-way solenoid valve (105) is connected to the water inlet of the battery water pump; the battery inlet and outlet water paths are equipped with a battery water temperature sensor and a battery water temperature sensor.

4. The thermal management system according to claim 3, wherein: The air conditioning warm air water circuit comprises a warm air water pump, a first PTC, and a warm air core body connected in sequence; the warm air core body outlet is connected to the first interface of the three-way valve of the three-way valve circuit, the third interface of the three-way valve is connected to the second plate exchange water inlet, the second plate exchange water outlet is connected to the water inlet of the water-cooled condenser (102) after merging with the second interface of the three-way valve, the water outlet of the water-cooled condenser (102) is connected to the cold side water inlet of the first plate exchange, the cold side water outlet of the first plate exchange is connected to the warm air water pump water inlet, and a condensation outlet water temperature sensor is installed on the water outlet water path of the water-cooled condenser (102).

5. A thermal management system control method, characterized in that: It includes the following steps: Obtaining the real-time ambient temperature of the thermal management system according to claim 4 to determine the environmental scene; the environmental scene includes a medium-high temperature scene, a low temperature scene, and an extreme cold scene; Obtain the real-time thermal requirements of the battery, electric drive, and passenger compartment, and call the working mode based on the determined control scenario.

6. The thermal management system control method according to claim 5, wherein: When the ambient temperature is greater than the first threshold, it is a medium-high temperature scenario; when the ambient temperature is less than or equal to the first threshold and greater than the second threshold, it is a low temperature scenario; when the ambient temperature is less than or equal to the second threshold, it is an extreme cold scenario.

7. The thermal management system control method according to claim 5, wherein: In medium- and high-temperature scenarios, when the battery needs to be cooled but the electric drive does not need heat dissipation, operating mode 1 is executed; In medium- and high-temperature scenarios, when the passenger compartment and battery require cooling but the electric drive does not require heat dissipation, operating mode 2 is executed; In medium- and high-temperature scenarios, when the passenger compartment and battery require cooling, and the electric drive requires heat dissipation, operating mode three is executed; When the passenger cabin needs cooling and the electric drive needs heat dissipation in medium and high temperature scenarios, operating mode 4 is executed; In medium- and high-temperature scenarios, when only the electric drive needs to dissipate heat, operating mode 5 is executed; In medium and high temperature scenarios, when the battery needs to be cooled and the electric drive needs to dissipate heat, operating mode six is ​​executed.

8. The thermal management system control method according to claim 7, wherein: The working mode 1 performs the following control: The six-way solenoid valve (105) is controlled to be in conduction mode three, and the battery water pump is turned on; the compressor (101) of the refrigerant circuit is controlled to adjust the speed according to the battery water inlet temperature, the large-diameter electronic expansion valve is fully opened, the second electronic expansion valve is controlled to control the opening according to the superheat of the battery refrigerator, and the other valves are closed; the fan of the air-cooled condenser (108) is controlled to adjust the speed according to the refrigerant circuit pressure.

9. The thermal management system control method according to claim 7, wherein: The second working mode performs the following control: Based on the working mode 1, the compressor (101) is controlled to adjust the speed according to the evaporation temperature of the evaporator (103) and the battery inlet water temperature, and the first electronic expansion valve is controlled to control the opening according to the superheat of the evaporator; The working mode 3 performs the following control: On the basis of the working mode 2, the electric drive water pump is controlled to be turned on, the five-way solenoid valve (106) is in the conduction mode 1, and the electronic fan of the radiator is controlled to adjust the speed according to the electric drive outlet water temperature.

10. The thermal management system control method according to claim 7, wherein: The working mode 4 performs the following control: The compressor (101) of the refrigerant circuit is controlled to adjust its speed according to the evaporation temperature of the evaporator (103), the large-diameter electronic expansion valve is fully opened, the first electronic expansion valve is controlled to control its opening according to the superheat of the evaporator, and the other valves are closed: the six-way solenoid valve (105) is controlled to be in conduction mode three, the five-way solenoid valve (106) is controlled to be in conduction mode one, and the electric drive water pump is turned on; the electronic fan of the radiator is controlled to adjust its speed according to the electric drive outlet water temperature, and the fan of the air-cooled condenser (108) is controlled to adjust its speed according to the refrigerant circuit pressure; The working mode 5 performs the following control: The six-way solenoid valve (105) is controlled to be in conduction mode three, the five-way solenoid valve (106) is controlled to be in conduction mode one, and the electric drive water pump is turned on; the electronic fan of the radiator is controlled to adjust the speed according to the electric drive outlet water temperature.

11. The thermal management system control method according to claim 7, wherein: The working mode 6 performs the following control: On the basis of mode 1, the electric drive water pump is controlled to be turned on, and the five-way solenoid valve (106) is in conduction mode 1; the electronic fan of the radiator is controlled to adjust the speed according to the electric drive outlet water temperature.

12. The thermal management system control method according to claim 5, wherein: In low-temperature scenarios, when both the battery and electric drive need to dissipate heat, operating mode seven is executed; When the battery needs to be heated in low-temperature scenarios, if the air heat source meets the heating requirements, operating mode eight is executed; otherwise, operating mode nine is executed; When there is a high demand for battery heating in low or extremely cold conditions, or when both the passenger compartment and the battery need to be heated, operating mode 10 is executed; In low-temperature scenarios, when both the passenger compartment and the battery need to be heated, if the air heat source meets the heating requirements, operating mode 11 is executed; if not, operating mode 12 is executed; When the passenger cabin needs to be heated in a low-temperature scenario, if the air heat source meets the heating requirements, operating mode 13 is executed; if not, operating mode 14 is executed; In low-temperature or extremely cold scenarios, when the battery needs to be cooled and the passenger compartment needs to be heated, if the heat transferred from the battery by the refrigerant circuit meets the passenger compartment heating requirement, operating mode 15 is executed; otherwise, operating mode 16 is executed; In low temperature or extreme cold scenarios, when the battery needs to be cooled, the passenger compartment needs to be heated, and the electric drive needs to be cooled, and the electric drive coolant temperature is lower than the first set threshold, operating mode 17 is executed; In low-temperature or extremely cold scenarios, when the passenger compartment and battery need to be heated and the electric drive needs to be cooled, operating mode 20 is executed if the residual heat of the electric drive meets the heating requirements; otherwise, operating mode 21 is executed; In low-temperature scenarios, when the passenger compartment and battery require heating and the electric drive water circuit needs to store heat, if the air heat source meets the heating requirements, operating mode 18 is executed; if not, operating mode 19 is executed; when the electric drive coolant temperature exceeds the second set threshold, the system switches to operating mode 22; In low-temperature scenarios, when the passenger compartment and battery need to be heated and the electric drive needs to dissipate heat, if the air heat source meets the heating requirements, operating mode 22 is executed; if not, operating mode 23 is executed; In low-temperature or extremely cold scenarios, when the passenger compartment and battery need to be heated and the electric drive needs to be cooled, operating mode 24 is executed; In low-temperature or extreme-cold scenarios, when the passenger compartment and battery require heating and the electric drive requires cooling, and the electric drive coolant temperature is greater than a first set threshold, operating mode 25 is executed if the electric drive residual heat meets the heating requirements; otherwise, operating mode 26 is executed; In low-temperature or extremely cold scenarios, when the passenger compartment and battery need to be heated and the electric drive needs to be cooled, if the residual heat of the electric drive meets the heating requirements, operating mode 27 is executed; otherwise, operating mode 28 is executed; In low-temperature or extreme-cold scenarios, when the passenger compartment and battery need to be heated and the electric drive needs to be cooled, operating mode 29 is executed if the residual heat of the electric drive meets the heating requirements; otherwise, operating mode 30 is executed; In low-temperature scenarios, when the passenger cabin needs to be heated and the electric drive needs to store heat, if the air heat source meets the heating requirements, operating mode 31 is executed; if not, operating mode 32 is executed; In low-temperature or extreme-cold scenarios, when the passenger cabin needs to be heated and the electric drive needs to be cooled, if the residual heat of the electric drive meets the heating requirements, operating mode 33 is executed; otherwise, operating mode 34 is executed; In low-temperature or extremely cold scenarios, when the passenger cabin needs to be heated and the electric drive needs to be cooled, if the residual heat of the electric drive meets the heating requirements, operating mode 35 will be executed; otherwise, operating mode 36 will be executed; In low-temperature scenarios, when the passenger compartment needs to be heated and the electric drive needs to be cooled, operating mode 37 is executed; In low-temperature scenarios, when the passenger cabin needs to be heated, the battery needs to be cooled, and the electric drive needs to be cooled, working mode 38 is executed.

13. The thermal management system control method according to claim 12, wherein: The working mode seven performs the following control: The six-way solenoid valve (105) is controlled to be in conduction mode five, and the battery water pump is turned on; the five-way solenoid valve (106) is controlled to be in conduction mode one, and the electric drive water pump is turned on; and the electronic fan of the radiator is controlled to adjust the speed according to the battery water inlet temperature.

14. The thermal management system control method according to claim 12, wherein: The working mode eight performs the following control: The six-way solenoid valve (105) is controlled to be in conduction mode 1, and the battery water pump is turned on; the compressor (101) of the refrigerant circuit is controlled to adjust the speed according to the battery inlet water temperature, the large-diameter electronic expansion valve is adjusted in opening according to the superheat of the air-cooled condenser, the second refrigerant stop valve is opened, and the other valves are closed; the fan of the air-cooled condenser (108) is controlled to adjust the speed according to the refrigerant circuit pressure; The working mode nine includes starting the second PTC on the basis of the working mode eight.

15. The thermal management system control method according to claim 12, wherein: The working mode 10 performs the following control: Controlling the six-way solenoid valve (105) to be in conduction mode 1, the battery water pump is turned on, and the second PTC is activated; controlling the first interface and the third interface of the three-way valve to be connected, the heater water pump is turned on, and the first PTC is activated; The working mode 11 performs the following control: The six-way solenoid valve (105) is controlled to be in conduction mode 1, the battery water pump is turned on, and the second PTC is started; the first interface and the third interface of the three-way valve are controlled to be connected, and the warm air water pump is turned on; the compressor (101) of the refrigerant circuit is controlled to adjust the speed according to the water outlet temperature of the water-cooled condenser, the large-diameter electronic expansion valve is adjusted to adjust the opening according to the superheat of the air-cooled condenser, the second refrigerant stop valve is opened, and the fan of the air-cooled condenser (108) is controlled to adjust the speed according to the refrigerant circuit pressure; the working mode 12 includes starting the first PTC on the basis of working mode 11.

16. The thermal management system control method according to claim 12, wherein: The working mode thirteen performs the following control: The compressor (101) of the control refrigerant circuit is adjusted in speed according to the outlet water temperature of the water-cooled condenser, the large-diameter electronic expansion valve is adjusted in opening according to the superheat of the air-cooled condenser, the second refrigerant stop valve is opened and the other valves are closed; the fan of the air-cooled condenser (108) is controlled to adjust in speed according to the refrigerant circuit pressure; the first interface and the second interface of the control three-way valve are connected, and the warm air water pump is turned on; The working mode fourteen includes starting the first PTC on the basis of the working mode thirteen.

17. The thermal management system control method according to claim 12, wherein: The working mode 15 performs the following control: The six-way solenoid valve (105) is controlled to be in conduction mode three, and the battery water pump is turned on; the compressor (101) started by the control refrigerant circuit is controlled to adjust the speed according to the battery inlet water temperature, the first refrigerant stop valve is opened, the second electronic expansion valve is controlled to control the opening according to the battery refrigerator overheating, and the other valves are closed; the first interface and the second interface of the three-way valve are controlled to be connected, and the warm air water pump is turned on; The sixteenth working mode includes starting the first PTC on the basis of the fifteenth working mode.

18. The thermal management system control method according to claim 12, wherein: The working mode 17 performs the following control: Controlling the six-way solenoid valve (105) to be in conduction mode four, the battery water pump is turned on; The compressor (101) of the control refrigerant circuit adjusts its speed according to the outlet water temperature of the water-cooled condenser, the first refrigerant stop valve is opened, and the second electronic expansion valve is controlled to open according to the overheating degree of the battery refrigerator; the electric drive water pump is controlled to open, and the five-way solenoid valve (106) is in conduction mode 1; The electronic fan that controls the radiator adjusts its speed according to the water outlet temperature of the electric drive.

19. The thermal management system control method according to claim 12, wherein: The working mode 18 performs the following control: The six-way solenoid valve (105) is controlled to conduct in mode one, the battery water pump is turned on, and the second PTC is turned on; the compressor (101) of the refrigerant circuit is controlled to adjust the speed according to the water outlet temperature of the water-cooled condenser, the large-diameter electronic expansion valve is adjusted in opening according to the superheat of the air-cooled condenser, the second refrigerant stop valve is opened, and the other valves are closed; the electric drive water pump is controlled to be turned on, and the five-way solenoid valve (106) is controlled to conduct in mode three for heat storage; the fan of the air-cooled condenser (108) is controlled to adjust the speed according to the refrigerant circuit pressure, the first interface and the second interface of the three-way valve are controlled to be connected, and the warm air water pump is turned on; The nineteenth working mode includes starting the first PTC on the basis of the eighteenth working mode.

20. The thermal management system control method according to claim 12, wherein: The working mode 20 performs the following control: The six-way solenoid valve (105) is controlled to be in conduction mode 2, the battery water pump is turned on, and the second PTC is started; the compressor (101) of the refrigerant circuit is controlled to adjust the speed according to the water outlet temperature of the water-cooled condenser, the first refrigerant stop valve is opened, and the second electronic expansion valve is controlled to control the opening according to the superheat of the battery refrigerator; the other valves are closed; the electric drive water pump is controlled to be turned on, and the five-way solenoid valve (106) is turned on mode 3 to allow the electric drive water to enter the battery refrigerator (107); the first interface and the second interface of the three-way valve are controlled to be connected, and the warm air water pump is turned on; The working mode 21 includes starting the first PTC on the basis of the working mode 20.

21. The thermal management system control method according to claim 12, wherein: The working mode 22 performs the following control: The six-way solenoid valve (105) is controlled to conduct mode five, and the battery water pump is turned on; the compressor (101) of the refrigerant circuit is controlled to adjust the speed according to the water outlet temperature of the water-cooled condenser, the large-diameter electronic expansion valve is adjusted to open according to the superheat of the air-cooled condenser, the second refrigerant stop valve is opened, and the other valves are closed; the electric drive water pump is controlled to be turned on, and the five-way solenoid valve (106) is controlled to conduct mode three, so that the electric drive water is connected to the battery water circuit; the fan of the air-cooled condenser (108) is controlled to adjust the speed according to the refrigerant circuit pressure, the first interface and the second interface of the three-way valve are controlled to be connected, and the warm air water pump is turned on; The working mode 23 includes starting the first PTC on the basis of the working mode 22.

22. The thermal management system control method according to claim 12, wherein: The working mode 24 performs the following control: Controlling the six-way solenoid valve (105) to be in conduction mode five, the battery water pump is turned on; The electric drive water pump is controlled to be turned on, and the five-way solenoid valve (106) is in conduction mode three, so that the electric drive water is connected to the battery water circuit; the first interface and the second interface of the three-way valve are controlled to be connected, the warm air water pump is turned on, and the first PTC is turned on.

23. The thermal management system control method according to claim 12, wherein: The working mode 25 performs the following control: Controlling the six-way solenoid valve (105) to be in conduction mode four, the battery water pump is turned on; When the refrigerant circuit is started, the compressor (101) adjusts the speed according to the outlet water temperature of the water-cooled condenser, the first refrigerant stop valve is opened, the second electronic expansion valve controls the opening according to the overheating degree of the battery refrigerator, and the other valves are closed; the electric drive water pump is controlled to be turned on, and the five-way solenoid valve (106) is in conduction mode three to allow the electric drive water to be connected to the battery water circuit; the first interface and the second interface of the three-way valve are controlled to be connected, and the warm air water pump is turned on; The working mode 26 includes starting the first PTC based on the working mode 25.

24. The thermal management system control method according to claim 12, wherein: The working mode 27 performs the following control: The six-way solenoid valve (105) is controlled to be in conduction mode 1, the battery water pump is turned on, and the second PTC is activated; the electric drive water pump is controlled to be turned on, the five-way solenoid valve (106) is controlled to be in conduction mode 2, and the electric drive water is connected to the first plate exchanger; the first interface and the second interface of the three-way valve are controlled to be connected, and the warm air water pump is turned on; The working mode 28 includes activating the first PTC based on the working mode 27.

25. The thermal management system control method according to claim 12, wherein: The working mode 29 performs the following control: The six-way solenoid valve (105) is controlled to be in conduction mode five, and the battery water pump is turned on; the electric drive water pump is turned on, and the five-way solenoid valve (106) is in conduction mode two, so that the electric drive water is first connected to the first plate exchanger and then to the battery water circuit; the first interface and the second interface of the three-way valve are controlled to be connected, and the heater water pump is turned on; The working mode 30 includes starting the second PTC on the basis of the working mode 29.

26. The thermal management system control method according to claim 12, wherein: In the working mode 31, the following controls are performed: The compressor (101) of the refrigerant circuit is controlled to adjust its speed according to the outlet water temperature of the water-cooled condenser, the large-diameter electronic expansion valve is adjusted to adjust its opening according to the superheat of the air-cooled condenser, and the second refrigerant stop valve is opened; the five-way solenoid valve (106) is controlled to be in conduction mode three to allow the electric drive water circuit to store heat; the first interface and the second interface of the three-way valve are controlled to be connected, and the warm air water pump is turned on; the fan of the air-cooled condenser (108) is controlled to adjust its speed according to the refrigerant circuit pressure; The working mode 32 includes starting the first PTC based on the working mode 31.

27. The thermal management system control method according to claim 12, wherein: The working mode 33 performs the following control: The compressor (101) of the refrigerant circuit is controlled to adjust the speed according to the outlet water temperature of the water-cooled condenser, the first refrigerant stop valve is opened, the second electronic expansion valve is controlled to control the opening according to the overheating degree of the battery refrigerator, and the other valves are closed; the electric drive water pump is controlled to be turned on, and the five-way solenoid valve (106) is in conduction mode three to allow the electric drive water to enter the battery refrigerator (107); the first interface and the second interface of the three-way valve are controlled to be connected, and the warm air water pump is turned on; the electronic fan of the radiator is controlled to adjust the speed according to the outlet water temperature of the electric drive; The working mode 34 includes starting the first PTC on the basis of the working mode 33.

28. The thermal management system control method according to claim 12, wherein: The working mode thirty-five performs the following control: The electric drive water pump is controlled to be turned on, the five-way solenoid valve (106) is in conduction mode 2, and the electric drive water is connected to the first plate exchanger; the first interface and the second interface of the three-way valve are controlled to be connected, and the warm air water pump is turned on; The thirty-sixth working mode includes starting the first PTC based on the thirty-fifth working mode.

29. The thermal management system control method according to claim 12, wherein: The working mode thirty-seven performs the following control: The compressor (101) that controls the start of the refrigerant circuit adjusts its speed according to the outlet water temperature of the water-cooled condenser, the large-diameter electronic expansion valve adjusts its opening according to the superheat of the air-cooled condenser, the second refrigerant stop valve is opened, and the other valves are closed; the electric drive water pump is controlled to start, and the five-way solenoid valve (106) is in conduction mode 1; the first interface and the second interface of the three-way valve are controlled to be connected, and the warm air water pump is turned on; the fan of the air-cooled condenser (108) is controlled to adjust its speed according to the refrigerant circuit pressure.

30. The thermal management system control method according to claim 12, wherein: The working mode 38 performs the following control: The six-way solenoid valve (105) is controlled to be in conduction mode three, and the battery water pump is turned on; the compressor (101) of the refrigerant circuit is controlled to adjust the speed according to the water outlet temperature of the water-cooled condenser, the first refrigerant stop valve is opened, the second electronic expansion valve is controlled to control the opening according to the superheat of the battery refrigerator, and the other valves are closed; the electric drive water pump is controlled to be turned on, and the five-way solenoid valve (106) is in conduction mode one; the first interface and the second interface of the three-way valve are controlled to be connected, and the warm air water pump is turned on; the electronic fan of the radiator is controlled to adjust the speed according to the electric drive water outlet temperature.

31. The thermal management system control method according to claim 5, wherein: In extremely cold conditions, when only the battery needs to be heated, operating mode thirty-nine is executed; In an extremely cold scenario, when only the passenger compartment needs to be heated, operating mode 40 is executed; In extremely cold weather, when the passenger compartment and battery need to be heated, the battery heating demand is high, and the electric drive is storing heat, operating mode 41 is executed; when the electric drive coolant temperature is greater than the second set threshold, the system switches to operating mode 24; In extremely cold weather, when the passenger compartment needs to be heated and the electric drive needs to store heat, operating mode 42 is executed; when the electric drive coolant temperature is greater than the second set threshold, the system switches to operating mode 33; In extremely cold conditions, when the passenger cabin needs to be heated and the electric drive needs to be cooled, operating mode 43 is executed.

32. The thermal management system control method according to claim 31, wherein: The thirty-nine working mode performs the following control: Controlling the six-way solenoid valve (105) to be in conduction mode 1, the battery water pump is turned on, and the second PTC is activated; In extremely cold weather, when only the passenger compartment needs to be heated, the following controls are performed according to working mode 40: The first and second interfaces of the three-way valve are controlled to be connected, the warm air water pump is turned on, and the first PTC is started.

33. The thermal management system control method according to claim 31, wherein: The working mode 41 performs the following control: The six-way solenoid valve (105) is controlled to be in conduction mode one, the battery water pump is turned on, and the second PTC is activated; the first interface and the third interface of the three-way valve are controlled to be connected, the warm air water pump is turned on, and the first PTC is activated; the electric drive water pump is controlled to be turned on, and the five-way solenoid valve (106) is in conduction mode three, so that the electric drive water circuit can store heat.

34. The thermal management system control method according to claim 31, wherein: The working mode 42 performs the following control: The first and second interfaces of the three-way valve are controlled to be connected, the warm air water pump is turned on, and the first PTC is activated; the electric drive water pump is controlled to be turned on, and the five-way solenoid valve (106) is in conduction mode three, so that the electric drive water circuit can store heat.

35. The thermal management system control method according to claim 31, wherein: The working mode 43 performs the following control: The compressor (101) of the control refrigerant circuit is adjusted in speed according to the outlet water temperature of the water-cooled condenser, the first refrigerant stop valve is opened, the second electronic expansion valve is controlled in opening degree according to the overheating degree of the battery cooler, and the other valves are closed; the electric drive water pump is controlled to be turned on, the six-way solenoid valve (105) is in conduction mode 2, the five-way solenoid valve (106) is in conduction mode 1, and the electric drive water is connected to the battery cooler (107); the electronic fan of the control radiator is controlled to adjust in speed according to the outlet water temperature of the electric drive.

36. A vehicle, characterized in that: It includes: A thermal management system according to any one of claims 1 to 4.

37. A computer-readable storage medium, characterized in that The computer-readable storage medium stores a thermal management system control program, wherein when the thermal management system control program is executed by the processor, the steps of the thermal management system control method according to any one of claims 5 to 35 are implemented.

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