Whole vehicle thermal management system, control method of whole vehicle thermal management system and vehicle

Abstract

The application provides a whole vehicle heat management system, a control method of the whole vehicle heat management system and a vehicle. The system comprises a motor heat exchange circuit, a heat exchange circuit, a battery heat exchange circuit, a heat pump heat exchange circuit and an engine heat exchange circuit; the motor heat exchange circuit is connected with the heat exchange circuit through a first control valve and a second control valve; the battery heat exchange circuit is provided with a first heat exchange module, the heat exchange circuit is provided with a second heat exchange module, the battery heat exchange circuit is connected with the second heat exchange module through the second control valve; the heat pump heat exchange circuit is connected with the second heat exchange module; the engine heat exchange circuit is connected with a heater module and the first heat exchange module through a third control valve; the system further comprises an on-board charger and a transmission oil cooler which are connected with a motor module in the motor heat exchange circuit in parallel. The application can effectively utilize the energy of the motor heat exchange circuit, the battery heat exchange circuit, the heat pump heat exchange circuit and the engine heat exchange circuit, and improve the energy utilization rate and the whole vehicle endurance.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of automobile thermal management, and in particular to a whole vehicle thermal management system, a control method of the whole vehicle thermal management system, and a vehicle. BACKGROUND

[0002] In order to adapt to the increasingly severe energy crisis, the current automobile industry is committed to the research of reducing the energy of vehicles. Among them, new energy vehicles are attracting more and more attention.

[0003] At present, in the new energy vehicle technology, the winter pure electric vehicle's endurance mileage decay has been a problem that has plagued the main machine factory, and the endurance mileage is mainly limited by the battery power. However, in the new energy vehicle, the energy required for battery heating, passenger cabin heating and the like is all from the battery, which further makes the not much energy storage more difficult. Therefore, how to improve the energy utilization rate in the new energy vehicle so that the vehicle has a longer endurance mileage under the same amount of electricity is of great importance to improve product competitiveness and user experience. SUMMARY

[0004] The embodiments of the present application provide a whole vehicle thermal management system, a control method of the whole vehicle thermal management system, and a vehicle to solve the problem that the energy utilization rate of the new energy vehicle needs to be improved.

[0005] In a first aspect, the embodiments of the present application provide a whole vehicle thermal management system, comprising: a motor heat exchange circuit, a heat exchange circuit, a battery heat exchange circuit, a heat pump heat exchange circuit and an engine heat exchange circuit;

[0006] The motor heat exchange circuit is connected with the heat exchange circuit through a first control valve and a second control valve; the battery heat exchange circuit is provided with a first heat exchange module, the heat exchange circuit is provided with a second heat exchange module, and the battery heat exchange circuit is connected with the second heat exchange module through the second control valve; the heat pump heat exchange circuit is connected with the second heat exchange module; and the engine heat exchange circuit is connected with a heater module and the first heat exchange module through a third control valve.

[0007] The whole vehicle thermal management system further comprises an on-board charger and a transmission oil cooler which are connected with a motor module in the motor heat exchange circuit in parallel.

[0008] In a possible implementation manner, the motor heat exchange circuit comprises a low-temperature radiator in a motor module and a heat dissipation module.

[0009] The motor heat exchange circuit is connected with the heat exchange circuit through a first control valve and a second control valve, and comprises:

[0010] One end of the motor module is connected to the first valve port of the second control valve through the first valve port and the second valve port of the first control valve, the second valve port of the second control valve is connected to the first end of the second heat exchange module, and the second end of the second heat exchange module is connected to the other end of the motor module.

[0011] The third valve port of the first control valve is connected to one end of the low-temperature radiator, and the other end of the low-temperature radiator is connected to the other end of the motor module.

[0012] In a possible implementation, the whole vehicle thermal management system further comprises a fourth control valve.

[0013] The whole vehicle thermal management system further comprises an on-board charger and a transmission oil cooler connected in parallel with the motor module in the motor heat exchange circuit, comprising:

[0014] The first valve port of the fourth control valve is connected to the other end of the low-temperature radiator, the second valve port of the fourth control valve is connected to one end of the on-board charger, the other end of the on-board charger is connected to one end of the transmission oil cooler, the other end of the transmission oil cooler is connected to one end of the motor module, and the third valve port of the fourth control valve is connected to the other end of the motor module.

[0015] In a possible implementation, the battery heat exchange circuit comprises a battery module.

[0016] The battery heat exchange circuit is connected to the second heat exchange module through the second control valve, comprising:

[0017] One end of the battery module is connected to the first end of the first heat exchange module, the second end of the first heat exchange module is connected to the first end of the second heat exchange module through the third valve port and the second valve port of the second control valve, and the second end of the second heat exchange module is further connected to the other end of the battery module.

[0018] In a possible implementation, the heat pump heat exchange circuit comprises a compressor, an indoor heat exchanger, an outdoor heat exchanger, and a gas-liquid separator.

[0019] The heat pump heat exchange circuit is connected to the second heat exchange module, comprising:

[0020] One end of the compressor is connected to one end of the indoor heat exchanger, the other end of the indoor heat exchanger is connected to one end of the outdoor heat exchanger through a first electronic expansion valve, the other end of the outdoor heat exchanger is connected to one end of the gas-liquid separator through a first stop valve, and the other end of the gas-liquid separator is connected to the other end of the compressor.

[0021] The other end of the indoor heat exchanger is also connected with the third end of the second heat exchange module through a second stop valve and a second electronic expansion valve, the fourth end of the second heat exchange module is connected with a first valve port of a fifth control valve, a second valve port of the fifth control valve is connected with one end of the gas-liquid separator, a third valve port of the fifth control valve is connected between the compressor and one end of the indoor heat exchanger, the other end of the outdoor heat exchanger is also connected with one end of a third stop valve, the other end of the third stop valve is connected between the second stop valve and the second electronic expansion valve in one way, and is connected with one end of the gas-liquid separator through a third electronic expansion valve and an evaporator in another way.

[0022] In a possible implementation, the engine heat exchange circuit comprises a high-temperature radiator in the engine module and the heat dissipation module;

[0023] The engine heat exchange circuit is connected with the warm air module and the first heat exchange module through a third control valve, and comprises:

[0024] One end of the engine module is connected with one end of the high-temperature radiator, the other end of the high-temperature radiator is connected with the other end of the engine module, the other end of the engine module is also connected with one end of the warm air module through a third valve port and a first valve port of the third control valve, the other end of the warm air module is connected with one end of the engine module, the other end of the engine module is also connected with the third end of the first heat exchange module through a third valve port and a second valve port of the third control valve, and the fourth end of the first heat exchange module is connected between the third valve port of the third control valve and the other end of the engine module.

[0025] In a second aspect, an embodiment of the present application provides a control method of a whole vehicle thermal management system, applied to the whole vehicle thermal management system in the first aspect or any possible implementation of the first aspect, and the control method comprises:

[0026] Obtaining a vehicle parameter, and determining a required working condition of the whole vehicle thermal management system according to the vehicle parameter;

[0027] Controlling the conduction directions of the first control valve, the second control valve and the third control valve in the whole vehicle thermal management system, so that the whole vehicle thermal management system works in the required working condition.

[0028] In a possible implementation, the control of the conduction directions of the first control valve, the second control valve and the third control valve in the whole vehicle thermal management system, so that the whole vehicle thermal management system works in the required working condition, comprises:

[0029] If the required working condition is that the motor waste heat heats the battery, the first control valve and the second control valve are controlled to make the motor module in the motor heat exchange circuit and the second heat exchange module in the heat exchange circuit conductive, and the second control valve is controlled to make the battery heat exchange circuit and the second heat exchange module conductive, so as to connect the motor module and the battery heat exchange circuit through the second heat exchange module, so that the motor waste heat heats the battery.

[0030] If the required working condition is that the engine waste heat heats the battery, the second control valve is controlled to make the battery heat exchange circuit and the first heat exchange module conductive, the third control valve is controlled to make the engine heat exchange circuit and the first heat exchange module conductive, so as to connect the battery heat exchange circuit and the engine heat exchange circuit through the first heat exchange module, so that the engine waste heat heats the battery.

[0031] If the required working condition is that the engine waste heat heats the battery and the motor, the first control valve and the second control valve are controlled to make the motor module in the motor heat exchange circuit and the second heat exchange module in the heat exchange circuit conductive, and the second control valve is controlled to make the battery heat exchange circuit and the second heat exchange module, the first heat exchange module conductive, and the third control valve is controlled to make the engine heat exchange circuit and the first heat exchange module conductive, so as to connect the motor module, the battery heat exchange circuit and the engine heat exchange circuit through the first heat exchange module and the second heat exchange module, so that the engine waste heat heats the battery and the motor.

[0032] In a possible implementation, the conductive directions of the first control valve, the second control valve and the third control valve in the whole vehicle thermal management system are controlled, so that the whole vehicle thermal management system works in the required working condition, comprising:

[0033] If the required working condition is that the heat pump absorbs the engine waste heat, the third control valve is controlled to make the engine heat exchange circuit and the first heat exchange module conductive, and the second control valve is controlled to make the first heat exchange module and the second heat exchange module in the heat exchange circuit conductive, so as to connect the heat pump heat exchange circuit and the engine heat exchange circuit through the first heat exchange module and the second heat exchange module, so that the heat pump absorbs the engine waste heat.

[0034] If the required working condition is that the heat pump absorbs the motor waste heat, the first control valve and the second control valve are controlled to make the motor module in the motor heat exchange circuit and the second heat exchange module in the heat exchange circuit conductive, so as to connect the heat pump heat exchange circuit and the motor heat exchange circuit through the second heat exchange module, so that the heat pump absorbs the motor waste heat.

[0035] In a third aspect, the embodiments of the present application provide a vehicle comprising an electronic device and a whole vehicle thermal management system according to the first aspect, the electronic device comprising a memory, a processor, and a computer program stored in the memory and capable of running on the processor, and the processor implements the steps of the whole vehicle thermal management control method according to the second aspect when executing the computer program.

[0036] The embodiments of the present application provide a whole vehicle thermal management system, a control method of the whole vehicle thermal management system, and a vehicle. The motor heat exchange circuit is connected with the heat exchange circuit through the first control valve and the second control valve. The battery heat exchange circuit is provided with the first heat exchange module, and the heat exchange circuit is provided with the second heat exchange module. The battery heat exchange circuit is connected with the second heat exchange module through the second control valve. The heat pump heat exchange circuit is connected with the second heat exchange module. The engine heat exchange circuit is connected with the first heat exchange module and the heating module through the third control valve. The whole vehicle thermal management system further comprises an on-board charger and a transmission oil cooler connected with the motor module in the motor heat exchange circuit in parallel. Thus, the first control valve and the second control valve can be used to control the disconnection or connection between the motor heat exchange circuit and the battery heat exchange circuit, or the disconnection or connection between the heat pump heat exchange circuit and the battery heat exchange circuit, or the disconnection or connection between the heat pump heat exchange circuit and the motor heat exchange circuit when needed. The first control valve, the second control valve, and the third control valve can be used to control the disconnection or connection between the engine heat exchange circuit and the battery heat exchange circuit, or the disconnection or connection between the engine heat exchange circuit, the battery heat exchange circuit, and the motor heat exchange circuit, or the disconnection or connection between the engine heat exchange circuit and the heat pump heat exchange circuit. Thus, the motor waste heat or the heat pump can be used to heat the battery when needed, so as to reduce the energy consumption of the battery heating system and improve the endurance of the vehicle. The engine waste heat can be used to heat the motor and the battery or the battery alone, so as to make the motor and / or the battery work at the optimal working temperature while saving energy. The heat pump can absorb the ambient heat and the motor waste heat or the motor waste heat or the engine waste heat, so as to make the heat pump absorb all the energy that can be absorbed and widen the use environment temperature of the heat pump. On this basis, the energy of the motor heat exchange circuit, the battery heat exchange circuit, the heat pump heat exchange circuit, and the engine heat exchange circuit can be effectively utilized, the energy utilization rate is improved, and the endurance of the vehicle is improved. BRIEF DESCRIPTION OF DRAWINGS

[0037] In order to more clearly illustrate the technical solutions in the embodiments of the present application, the drawings needed in the embodiments or prior art description will be briefly introduced as follows. Obviously, the drawings in the following description are only some embodiments of the present application, and other drawings can be obtained by those skilled in the art without creative labor.

[0038] Figure 1is a structural schematic diagram of a whole vehicle thermal management system provided by an embodiment of the present application;

[0039] Figure 2 is an implementation flowchart of engine waste heat heating a motor and a battery provided by an embodiment of the present application;

[0040] Figure 3 is an implementation flowchart of a heat pump absorbing engine waste heat provided by an embodiment of the present application;

[0041] Figure 4 is a structural schematic diagram of a heat pump simultaneously absorbing environmental heat and motor waste heat provided by an embodiment of the present application;

[0042] Figure 5 is a schematic diagram of a heat pump absorbing motor waste heat provided by an embodiment of the present application. DETAILED DESCRIPTION

[0043] In the following description, for the purpose of explanation and not limitation, specific details are set forth, such as particular system configurations, techniques, etc., in order to provide a thorough understanding of the embodiments of the present application. However, it will be apparent to those skilled in the art that the present application can be practiced in other embodiments that depart from these specific details. In other instances, detailed descriptions of well-known systems, devices, circuits, and methods are omitted so as not to obscure the description of the present application with unnecessary detail.

[0044] In order to make the objects, technical solutions and advantages of the present application clearer, the following will be described by specific embodiments in conjunction with the accompanying drawings.

[0045] As shown in Figure 1 the present application provides a whole vehicle thermal management system, which comprises a motor heat exchange circuit, a heat exchange circuit, a battery heat exchange circuit, a heat pump heat exchange circuit and an engine heat exchange circuit. The motor heat exchange circuit in the embodiment is a circuit formed by connecting a motor module 10, a first control valve 12 (1, 3 valve port through) and a low-temperature radiator LT RAD. The battery heat exchange circuit is a circuit formed by a battery module 20. The heat exchange circuit is a circuit formed by a second heat exchange module 22. The heat pump heat exchange circuit is a circuit formed by connecting a compressor 30, an indoor heat exchanger 31, an outdoor heat exchanger 32 and a gas-liquid separator 33. The engine heat exchange circuit is a circuit formed by connecting an engine module 40 and a high-temperature radiator 44. The motor heat exchange circuit is connected with the heat exchange circuit through the first control valve 12 and a second control valve 23. The battery heat exchange circuit is provided with a first heat exchange module 21, and the heat exchange circuit is provided with the second heat exchange module 22. The battery heat exchange circuit is connected with the second heat exchange module 22 through the second control valve 23. The heat pump heat exchange circuit is connected with the second heat exchange module 22. The engine heat exchange circuit is connected with a heater module 41 and the first heat exchange module 21 through a third control valve 42.

[0046] The whole vehicle thermal management system further comprises an on-board charger 14 and a transmission oil cooler 16 connected in parallel with the motor module 10 in the motor heat exchange circuit.

[0047] Optionally, as shown in Figure 1 The motor heat exchange circuit comprises the motor module 10 and a low-temperature radiator LT RAD in the heat dissipation module 11. One end of the motor module 10 is connected to the first valve port of the second control valve 23 through the first valve port and the second valve port of the first control valve 12, the second valve port of the second control valve 23 is connected to the first end of the second heat exchange module 22, the second end of the second heat exchange module 22 is connected to the other end of the motor module 10; the third valve port of the first control valve 12 is connected to one end of the low-temperature radiator LT RAD, and the other end of the low-temperature radiator LT RAD is connected to the other end of the motor module 10.

[0048] Optionally, as shown in Figure 1 The whole vehicle thermal management system further comprises a fourth control valve 13; the first valve port of the fourth control valve 13 is connected to the other end of the low-temperature radiator LT RAD, the second valve port of the fourth control valve 13 is connected to one end of the on-board charger 14, the other end of the on-board charger 14 is connected to one end of the transmission oil cooler 16, the other end of the transmission oil cooler 16 is connected to one end of the motor module 10, and the third valve port of the fourth control valve 13 is connected to the other end of the motor module 10.

[0049] Optionally, as shown in Figure 1 The battery heat exchange circuit comprises a battery module 20; one end of the battery module 20 is connected to the first end of the first heat exchange module 21, the second end of the first heat exchange module 21 is connected to the first end of the second heat exchange module 22 through the third valve port and the second valve port of the second control valve 23, and the second end of the second heat exchange module 22 is also connected to the other end of the battery module 20.

[0050] Optionally, as shown in Figure 1As shown, the heat pump heat exchange circuit includes a compressor 30, an indoor heat exchanger 31, an outdoor heat exchanger 32, and a gas-liquid separator 33; one end of the compressor 30 is connected to one end of the indoor heat exchanger 31, the other end of the indoor heat exchanger 31 is connected to one end of the outdoor heat exchanger 32 through a first electronic expansion valve 35a, the other end of the outdoor heat exchanger 32 is connected to one end of the gas-liquid separator 33 through a first stop valve 36a, and the other end of the gas-liquid separator 33 is connected to the other end of the compressor 30; the other end of the indoor heat exchanger 31 is also connected to the second heat exchange module 31 through a second stop valve 36b and a second electronic expansion valve 35b. The third end of the outdoor heat exchanger 32 is connected to the third end of the block 22, the fourth end of the second heat exchange module 22 is connected to the first valve port of the fifth control valve 34, and the second valve port of the fifth control valve 34 is connected to one end of the gas-liquid separator 33; the third valve port of the fifth control valve 34 is connected between the compressor 30 and one end of the indoor heat exchanger 31; the other end of the outdoor heat exchanger 32 is also connected to one end of the third stop valve 36c, and the other end of the third stop valve 36c is connected between the second stop valve 36b and the second electronic expansion valve 35b in one way, and is connected to one end of the gas-liquid separator 33 through the third electronic expansion valve 35c and the evaporator 37 in the other way.

[0051] Optional, such as Figure 1 As shown, the engine heat exchange circuit includes an engine module 40 and a high-temperature radiator HT RAD in the heat dissipation module 11; one end of the engine module 40 is connected to one end of the high-temperature radiator HT RAD, and the other end of the high-temperature radiator HT RAD is connected to the other end of the engine module 40; the other end of the engine module 40 is also connected to one end of the heater module 41 through the third valve port and the first valve port of the third control valve 42, and the other end of the heater module 41 is connected to one end of the engine module 40; the other end of the engine module 40 is also connected to the third end of the first heat exchange module 21 through the third valve port and the second valve port of the third control valve 42, and the fourth end of the first heat exchange module 21 is connected between the third valve port of the third control valve 42 and the other end of the engine module 40.

[0052] It should be noted that if Figure 1As shown, the whole vehicle thermal management system further comprises overflow tanks 50a and 50b for supplying cooling liquid to the motor heat exchange circuit, the battery heat exchange circuit and the engine heat exchange circuit to transfer heat through the flow of the cooling liquid. Electronic water pumps (i.e. the motor water pump 60a, the battery water pump 60b and the engine water pump 60d in the figure) are connected to the three heat exchange circuits to provide the flow power of the cooling liquid. Unidirectional throttle valves 70a, 70b and 70c are connected to the three heat exchange circuits to control the flow and direction of the cooling liquid. The engine heat exchange circuit can further comprise a thermostat 43; one end of the engine module 40 is connected to one end of the high-temperature radiator HT RAD and the other end of the heater module 41 through the thermostat 43; the thermostat 43 is used to adjust the flow direction of the cooling water according to the temperature of the cooling water.

[0053] For example, the first control valve 12, the second control valve 23, the third control valve 42, the fourth control valve 13 and the fifth control valve 34 can all be three-way electromagnetic valves.

[0054] When the first valve port 1 and the third valve port 3 of the first control valve 12 are open and the first valve port 1 and the second valve port 2 of the fourth control valve 13 are open, the motor heat exchange circuit and the battery heat exchange circuit can be disconnected, and the low-temperature radiator LT RAD in the heat dissipation module 11 can dissipate heat to the motor module 10. The path for the low-temperature radiator LT RAD to dissipate heat to the motor module 10 is:

[0055] Motor water pump 60a→Fourth control valve 13 (1, 3 open)→Motor module 10→First control valve 12 (1, 3 open)→Low-temperature radiator LT RAD→Overflow tank 50a→Motor water pump 60a.

[0056] For example, the motor module 10 can include a P2.5 MCU, a DC / DC, a P4 three-in-one controller and a motor. When the motor is started, the motor generates heat, and if the temperature is too high, it will affect the normal operation of the motor. The low-temperature radiator LT RAD can be used to dissipate heat to the motor module 10, so that the motor can work at an appropriate temperature.

[0057] When the first valve port 1 and the third valve port 3 of the first control valve 12 are open and the first valve port 1 and the second valve port 2 of the fourth control valve 13 are open, the low-temperature radiator LT RAD in the heat dissipation module 11 can cool the series-connected on-board charger 14 and transmission oil cooler 16. The cooling path when the low-temperature radiator LT RAD cools the series-connected on-board charger 14 and transmission oil cooler 16 is:

[0058] Motor water pump 60a→Fourth control valve 13 (1, 2 open)→OBC 14→Transmission oil cooler 16→First control valve 12 (1, 3 open)→Low-temperature radiator LT RAD→Overflow tank 50a→Motor water pump 60a.

[0059] like Figure 1 As shown, the transmission oil cooler 16 is connected in series to the onboard charger 14 (i.e. Figure 1 The transmission oil cooler 16 is connected in series with the onboard charger 14 and then in parallel with the motor module 10. When cooling the transmission oil cooler and OBC is needed, the low-temperature radiator LT RAD in the heat dissipation module 11 provides cooling. When cooling the transmission oil cooler and OBC is not necessary, only the motor module 10 is cooled, thereby saving water pump energy.

[0060] When valve ports 2 and 3 of the first control valve 12 are open and valve port 1 is blocked, and valve ports 1 and 3 of the second control valve 23 are open and valve port 2 is blocked, the motor module 10 in the motor heat exchange circuit can be disconnected, allowing the low-temperature radiator LT RAD to dissipate heat to the battery module 20. The path for the low-temperature radiator LT RAD to dissipate heat to the battery module 20 is:

[0061] Battery water pump 60b → battery module 20 → first heat exchange module 21 → second control valve 23 (3, 1-way) → first control valve 12 (2, 3-way) → low-temperature radiator LT RAD → overflow tank 50a → battery water pump 60b.

[0062] The battery module 20 also needs to operate at a suitable temperature. In this embodiment, a low-temperature radiator LT RAD can be used to dissipate heat from the battery module 20 so that the battery can operate at a suitable temperature.

[0063] When valve ports 1 and 2 of the first control valve 12 are open and valve port 3 is blocked, valve ports 1 and 3 of the fourth control valve 13 are open and valve port 2 is blocked, and valve ports 1, 2, and 3 of the second control valve 23 are all open, the motor module 10 and the heat dissipation module 11 in the motor heat exchange circuit can be disconnected, and the motor module 10 in the motor heat exchange circuit can be connected to the battery heat exchange circuit, so that the motor waste heat can be used to heat the battery. The path for the motor waste heat to heat the battery is:

[0064] Motor water pump 60a → fourth control valve 13 (1, 3-way) → motor module 10 → first control valve 12 (1, 2-way) → second control valve 23 (1, 2-way) → second heat exchange module 22 → motor water pump 60a.

[0065] Battery water pump 60b →battery module 20 →first heat exchange module 21 →second control valve 23 (3, 2-way) →second heat exchange module 22 →battery water pump 60b.

[0066] In this embodiment, if the motor module 10 has a heat dissipation requirement and the battery module 20 has a heating requirement, the motor waste heat can be used to heat the battery to improve energy utilization.

[0067] When the valve port 3 and the valve port 2 of the second control valve 23 are open, the valve port 1 is closed, and the valve port 1 and the valve port 2 of the third control valve 42 are open, the battery heat exchange circuit and the motor heat exchange circuit are disconnected, and the battery heat exchange circuit and the engine heat exchange circuit are connected, so that the engine waste heat is used to heat the battery. The path of the engine waste heat heating the battery is as follows:

[0068] The battery water pump 60b→the battery module 20→the first heat exchange module 21→the second control valve 23 (3, 2 open)→the second heat exchange module 22→the battery water pump 60b.

[0069] The engine module 40→the thermostat 43→the heater water pump 60d→the heater core CH→the third control valve 42 (1, 2 open)→the first heat exchange module 21→the engine water pump 60c→the engine module 40.

[0070] In this embodiment, the battery heat exchange circuit and the motor heat exchange circuit are disconnected, and the battery heat exchange circuit and the engine heat exchange circuit are connected, so that the engine waste heat is used to heat the battery. At this time, if the motor module 10 has a heat dissipation requirement and the battery module 20 has a heating requirement, and the motor waste heat alone cannot meet the heat dissipation requirement of the motor module 10, the engine waste heat is used to heat the battery, so that the motor module 10 can be cooled alone, so that the motor module 10 and the battery module 20 can work at appropriate temperatures.

[0071] If the battery module 20 has no heating requirement, the engine can be cooled by the engine water pump 60c→the engine module 40→the thermostat 43→the high-temperature radiator HT RAD→the engine water pump 60c. The high-temperature radiator HT RAD can be arranged adjacent to the outdoor heat exchanger 32 and the low-temperature radiator LT RAD in the heat pump heat exchange circuit 30.

[0072] When the valve port 1 and the valve port 2 of the first control valve 12 are open, the valve port 3 is closed, and the valve port 1, the valve port 2, and the valve port 3 of the second control valve 23 are all open, and the valve port 1 and the valve port 2 of the third control valve 42 are open, the motor module 10 and the heat dissipation module 11 in the motor heat exchange circuit are disconnected, the motor module 10 in the motor heat exchange circuit is connected with the battery heat exchange circuit, and the engine heat exchange circuit is connected with the battery heat exchange circuit and the motor module 10, so that the engine waste heat is used to heat the motor and the battery. As shown in FIG. 8, the path of the engine waste heat heating the motor and the battery is as follows: Figure 2

[0073] The motor water pump 60a→the fourth control valve 13 (1, 3 open)→the motor module 10→the first control valve 12 (1, 2 open)→the second control valve 23 (1, 2 open)→the second heat exchange module 22→the motor water pump 60a.

[0074] ​Battery water pump 60b→Battery module 20→First heat exchange module 21→Second control valve 23(3, 2 open)→Second heat exchange module 22→Battery water pump 60b.

[0075] Engine module 40→Thermostat 43→Heater water pump 60d→Heater core CH→Third control valve 42(1, 2 open)→First heat exchange module 21→Engine water pump 60c→Engine module 40.

[0076] In this embodiment, if both the motor module 10 and the battery module 20 have heating requirements, the engine waste heat can also be used to simultaneously heat the motor and the battery, further improving energy utilization.

[0077] Wherein, when the valve port 1 and the valve port 2 of the first control valve 12 are open, the valve port 3 is not open, and the valve port 1 and the valve port 2 of the second control valve 23 are open, the motor module 10 in the motor heat exchange circuit and the second heat exchange module 22 in the heat exchange circuit can be connected, and at the same time, the heat pump heat exchange circuit and the second heat exchange module 22 in the heat exchange circuit are also connected, thereby indirectly connecting the motor module 10 in the motor heat exchange circuit and the heat pump heat exchange circuit 300, and making the heat pump absorb the motor waste heat.

[0078] In this embodiment, by indirectly connecting the motor module 10 in the motor heat exchange circuit and the heat pump heat exchange circuit, the heat pump can not only absorb the heat of the environment, but also simultaneously absorb the heat of the motor, thereby widening the use environment temperature of the heat pump.

[0079] Wherein, when the valve port 1 and the valve port 2 of the fifth control valve 34 are open, the valve port 3 is not open, the valve port 1 and the valve port 2 of the third control valve 42 are open, the valve port 3 is not open, and the valve port 1 and the valve port 3 of the second control valve 23 are open, the engine heat exchange circuit is connected with the heat pump heat exchange circuit through the first heat exchange module 21 and the second heat exchange module 22, and the heat pump absorbs the engine waste heat. As shown in the figure, the path for the heat pump to absorb the engine waste heat is: Figure 3

[0080] Engine water pump 60c→Engine module 40→Thermostat 43→Heater water pump 60d→Heater core CH→Third control valve 42(1, 2 open)→First heat exchange module 21→Second control valve 23(3, 2 open)→Second heat exchange module 22→Fifth control valve 34(1, 2 open)→Gas-liquid separator 33→Compressor 30.

[0081] Engine water pump 60c→Engine module 40→Thermostat 43→Heater water pump 60d→Heater core CH→Third control valve 42(1, 2 open)→First heat exchange module 21→Engine water pump 60c.

[0082] ​In this embodiment, by connecting the engine heat exchange circuit through the first heat exchange module 21, the second heat exchange module 22 and the heat pump heat exchange circuit, the heat pump can not only absorb the heat of the environment and the motor, but also absorb the heat of the engine, thereby further widening the use environment temperature of the heat pump.

[0083] Wherein, in combination with the specific structure of the heat pump heat exchange circuit, when the valve port 1, the valve port 2 and the valve port 3 of the fifth control valve 34 are all not connected, the heat pump heat exchange circuit can be disconnected with other circuits, so that the heat pump can heat the passenger compartment alone. The path of the heat pump heating the passenger compartment is:

[0084] Compressor 30→indoor heat exchanger 31→first electronic expansion valve 35a→outdoor heat exchanger 32→first stop valve 36a→gas-liquid separator 33→compressor 30.

[0085] Indoor heat exchanger 31→heater module 41.

[0086] Wherein, the indoor heat exchanger 31 can be arranged adjacent to the heater module 41, so as to adopt the form of combination of the heat pump and the heater module 41. When the heat pump heats the passenger compartment, if the environment temperature is relatively low or the heating demand of the passenger compartment is relatively large, the heat pump can be the main heating device and the heater module 41 can be the auxiliary heating device. If the environment temperature is relatively high or the heating demand of the passenger compartment is relatively small, the energy of the heater module 41 can be used preferentially for heating and the heat pump can be the auxiliary heating device. Moreover, the heater module 41 can also assist the engine heating. Therefore, by adopting the form of combination of the heat pump and the heater module 41, the heating energy efficiency of the whole vehicle thermal management system can be higher and more energy-saving.

[0087] Wherein, when the valve port 3 and the valve port 1 of the fifth control valve 34 are connected and the valve port 2 is not connected, and the valve port 3 and the valve port 2 of the second control valve 23 are connected and the valve port 1 is not connected, the heat pump heat exchange circuit and the battery heat exchange circuit can be connected, so that the heat pump can heat the battery. Moreover, the heat pump can also heat the battery and the passenger compartment. The path of the heat pump heating the battery is:

[0088] Compressor 30→fifth control valve 34(3, 1 connected)→second heat exchange module 22→second electronic expansion valve 35b→second stop valve 36b→first electronic expansion valve 35a→outdoor heat exchanger 32→first stop valve 36a→gas-liquid separator 34→compressor 30.

[0089] Battery water pump 60b→battery module 20→first heat exchange module 21→second control valve 23(3, 2 connected)→second heat exchange module 22→battery water pump 60b.

[0090] Wherein, the path of the heat pump heating the battery and the passenger compartment is:

[0091] Compressor 30 →indoor heat exchanger 31 →first electronic expansion valve 35 a →outdoor heat exchanger 32 →first stop valve 36 a →gas-liquid separator 33 →compressor 30 .

[0092] Compressor 30 → fifth control valve 34 (3, 1-way) → second heat exchange module 22 → second electronic expansion valve 35b → second stop valve 36b → first electronic expansion valve 35a → outdoor heat exchanger 32 → first stop valve 36a → gas-liquid separator 34 → compressor 30 .

[0093] Battery water pump 60b →battery module 20 →first heat exchange module 21 →second control valve 23 (3, 2-way) →second heat exchange module 22 →battery water pump 60b.

[0094] In this embodiment, when the vehicle heat pump system is started, the heat pump can be used to heat the passenger compartment and the battery. The use of the heat pump can greatly reduce the energy consumption of the air conditioning heating and battery heating systems, thereby improving the endurance of the entire vehicle.

[0095] Among them, when the valve ports 1 and 2 of the first control valve 12 are open, the valve port 3 is blocked, and the valve ports 1 and 2 of the second control valve 23 are open, the motor module 10 in the motor heat exchange circuit can be connected to the second heat exchange module 22, and the heat pump heat exchange circuit can be connected to the second heat exchange module 22 at the same time, so that the motor module 10 in the motor heat exchange circuit and the heat pump heat exchange circuit are indirectly connected, so that the heat pump absorbs the waste heat of the motor.

[0096] like Figure 4 As shown, the first electronic expansion valve 35a, the third stop valve 36c, and the second electronic expansion valve 35b are controlled to be open, and the second stop valve 36b is controlled to be closed, so that the heat pump absorbs ambient heat and motor waste heat at the same time. The path is:

[0097] Compressor 30 → indoor heat exchanger 31 → first electronic expansion valve 35a → outdoor heat exchanger 32 → third stop valve 36c → second electronic expansion valve 36b → second heat exchange module 22 → fifth control valve 34 (1, 2-way) → gas-liquid separator 33 → compressor 30 .

[0098] Motor water pump 60a → fourth control valve 13 (1, 3-way) → motor module 10 → first control valve 12 (1, 2-way) → second control valve 23 (1, 2-way) → second heat exchange module 22 → motor water pump 60a.

[0099] like Figure 5 As shown, the first electronic expansion valve 35a and the third stop valve 36c are controlled to be closed, and the second electronic expansion valve 35b and the second stop valve 36b are controlled to be open, so that the heat pump absorbs the waste heat of the motor in the following path:

[0100] Compressor 30→Indoor heat exchanger 31→Second stop valve 36b→Second electronic expansion valve 35b→Second heat exchange module 22→Fifth control valve 34(1, 2 pass)→Gas-liquid separator 33→Compressor 30.

[0101] Motor water pump 60a→Fourth control valve 13(1, 3 pass)→Motor module 10→First control valve 12(1, 2 pass)→Second control valve 23(1, 2 pass)→Second heat exchange module 22→Motor water pump 60a.

[0102] In this embodiment, the motor module 10 in the motor heat exchange circuit and the heat pump heat exchange circuit are indirectly connected, so that the heat pump not only absorbs the heat of the environment, but also absorbs the heat of the motor at the same time, thereby widening the use environment temperature of the heat pump.

[0103] Optionally, the heat pump heat exchange circuit can further include a third electronic expansion valve 35c and an evaporator 37 to perform refrigeration based on the third electronic expansion valve 35c and the evaporator 37.

[0104] The motor heat exchange circuit is connected with the heat exchange circuit through the first control valve and the second control valve; the battery heat exchange circuit is provided with the first heat exchange module, the heat exchange circuit is provided with the second heat exchange module, and the battery heat exchange circuit is connected with the second heat exchange module through the second control valve; the heat pump heat exchange circuit is connected with the second heat exchange module; the engine heat exchange circuit is connected with the heating module and the first heat exchange module through the third control valve; and the whole vehicle thermal management system further includes an on-board charger and a transmission oil cooler which are connected with the motor module in parallel. Therefore, when needed, the first control valve and the second control valve can be used to control the disconnection or connection between the motor heat exchange circuit and the battery heat exchange circuit, or the disconnection or connection between the heat pump heat exchange circuit and the battery heat exchange circuit, and the disconnection or connection between the heat pump heat exchange circuit and the motor heat exchange circuit; the first control valve, the second control valve and the third control valve can be used to control the disconnection or connection between the engine heat exchange circuit and the battery heat exchange circuit, or the disconnection or connection between the engine heat exchange circuit, the battery heat exchange circuit and the motor heat exchange circuit, or the disconnection or connection between the engine heat exchange circuit and the heat pump heat exchange circuit. Therefore, when needed, the motor waste heat or the heat pump can be used to heat the battery, so as to reduce the energy consumption of the battery heating system and improve the cruising range of the whole vehicle; or the engine waste heat can be used to heat the motor and the battery or the battery alone, so as to make the motor and / or the battery work at the optimal working temperature while saving energy; or the heat pump can absorb the environment heat and the motor waste heat at the same time or absorb the motor waste heat or absorb the engine waste heat, so that the heat pump can absorb all the energy that can be absorbed, thereby widening the use environment temperature of the heat pump. On this basis, the energy of the motor heat exchange circuit, the battery heat exchange circuit, the heat pump heat exchange circuit and the engine heat exchange circuit is effectively utilized, the energy utilization rate is improved, and the cruising range of the whole vehicle is improved.

[0105] The embodiment of the present application also provides a control method of the whole vehicle thermal management system, which is applied to the whole vehicle thermal management system and comprises the following steps of:

[0106] acquiring vehicle parameters and determining a required working condition of the whole vehicle thermal management system according to the vehicle parameters.

[0107] controlling the conduction directions of the first control valve, the second control valve and the third control valve in the whole vehicle thermal management system, so that the whole vehicle thermal management system works in the required working condition.

[0108] Optionally, when the heat pump heat exchange circuit is in the heating working condition and the engine heat exchange circuit is in the heat dissipation working condition (i.e. the required working condition of the whole vehicle thermal management system determined according to the vehicle parameters is that the heat pump absorbs the waste heat of the engine), the third control valve is controlled to make the engine heat exchange circuit conduct with the first heat exchange module, and the second control valve is controlled to make the first heat exchange module conduct with the second heat exchange module in the heat exchange circuit, so as to connect the heat pump heat exchange circuit and the engine heat exchange circuit through the first heat exchange module and the second heat exchange module, and make the heat pump absorb the waste heat of the engine.

[0109] In the embodiment, when the ambient temperature is low and the heat pump system cannot absorb enough heat from the ambient temperature, and the engine has a heat dissipation demand, the engine heat exchange circuit is connected with the heat pump heat exchange circuit through the first heat exchange module 21 and the second heat exchange module 22, so that the heat pump can not only absorb the heat from the environment, but also absorb the heat from the engine, and the heat pump system can be applied to a lower ambient temperature, thereby widening the ambient temperature for use of the heat pump.

[0110] Optionally, when the heat pump heat exchange circuit is in the heating working condition and the motor heat exchange circuit is in the heat dissipation working condition (i.e. the required working condition of the whole vehicle thermal management system determined according to the vehicle parameters is that the heat pump absorbs the waste heat of the motor), the first control valve and the second control valve are controlled to make the motor module in the motor heat exchange circuit conduct with the second heat exchange module in the heat exchange circuit, so as to connect the heat pump heat exchange circuit and the motor heat exchange circuit through the second heat exchange module, and make the heat pump absorb the waste heat of the motor, or simultaneously absorb the ambient heat and the waste heat of the motor.

[0111] In the embodiment, when the ambient temperature is low and the heat pump system cannot absorb enough heat from the ambient temperature, and the motor has a heat dissipation demand, the motor module 10 in the motor heat exchange circuit is indirectly connected with the heat pump heat exchange circuit, so that the heat pump can not only absorb the heat from the environment, but also simultaneously absorb the heat from the motor, thereby widening the ambient temperature for use of the heat pump.

[0112] Optionally, when the heat pump heat exchange circuit is in a heating condition and the battery heat exchange circuit has a heating requirement, the fifth control valve is controlled to connect the compressor and the second heat exchange module, the second control valve is controlled to connect the first heat exchange module and the second heat exchange module, and the heat pump heat exchange circuit and the battery heat exchange circuit are connected through the second heat exchange module to heat the battery by the heat pump.

[0113] On this basis, the heat pump can also heat the passenger cabin through the paths of the compressor 30→ the indoor heat exchanger 31→ the first electronic expansion valve 35a→ the outdoor heat exchanger 32→ the first stop valve 36a→ the gas-liquid separator 33→ the compressor 30, and the indoor heat exchanger 31→ the heating module 41.

[0114] In this embodiment, when the vehicle heat pump system is started, the heat pump can be used to heat the passenger cabin and heat the battery, and the use of the heat pump can greatly reduce the energy consumption of the air conditioning heating and battery heating system, thereby improving the vehicle endurance.

[0115] Optionally, when the motor heat exchange circuit is in a heat dissipation condition and the battery heat exchange circuit has a heating requirement (i.e., the required condition of the vehicle thermal management system determined according to the vehicle parameters is that the motor waste heat heats the battery), the first control valve and the second control valve are controlled to connect the motor module in the motor heat exchange circuit and the second heat exchange module in the heat exchange circuit, and the second control valve is controlled to connect the battery heat exchange circuit and the second heat exchange module, so that the motor module and the battery heat exchange circuit are connected through the second heat exchange module to heat the battery by the motor waste heat.

[0116] Optionally, when the engine heat exchange circuit is in a heat dissipation condition and the battery heat exchange circuit has a heating requirement (i.e., the required condition of the vehicle thermal management system determined according to the vehicle parameters is that the engine waste heat heats the battery), the second control valve is controlled to connect the battery heat exchange circuit and the first heat exchange module, the third control valve is controlled to connect the engine heat exchange circuit and the first heat exchange module, and the battery heat exchange circuit and the engine heat exchange circuit are connected through the first heat exchange module to heat the battery by the engine waste heat.

[0117] Optionally, when the engine heat exchange circuit is in a heat dissipation condition and the motor heat exchange circuit and the battery heat exchange circuit both have a heating requirement (i.e., the required condition of the vehicle thermal management system determined according to the vehicle parameters is that the engine waste heat heats the battery and the motor), the first control valve and the second control valve are controlled to connect the motor module in the motor heat exchange circuit and the second heat exchange module in the heat exchange circuit, the second control valve is controlled to connect the battery heat exchange circuit and the second heat exchange module and the first heat exchange module, and the third control valve is controlled to connect the engine heat exchange circuit and the first heat exchange module, so that the motor module and the battery heat exchange circuit are both connected with the engine heat exchange circuit through the first heat exchange module and the second heat exchange module, to heat the motor and the battery by the engine waste heat.

[0118] In the embodiment, when the vehicle battery needs to be heated, the heating can be performed by using the heat pump, the motor waste heat, the engine waste heat, or the engine waste heat for simultaneously heating the motor and the battery according to the situation, so that the motor and the battery can work at the optimal working temperature while improving the energy utilization rate and saving energy.

[0119] Optionally, when the on-board charger and the transmission oil cooler need to be cooled, the fourth control valve is controlled to connect the on-board charger and the cooling module, and the first control valve is controlled to connect the transmission oil cooler and the cooling module, so as to form a cooling circuit of the on-board charger and the transmission oil cooler.

[0120] In the embodiment, the transmission oil cooler is connected in series with the on-board charger and connected in parallel with the motor module, so that when the on-board charger and the transmission oil cooler need to be cooled, the transmission oil cooler and the on-board charger can be cooled by the cooling module. When the on-board charger and the transmission oil cooler do not need to be cooled, only the motor module is cooled, so as to save the energy consumption of the water pump.

[0121] As another embodiment of the present application, the present application can also include a vehicle comprising the vehicle thermal management system and the control method thereof according to any one of the above embodiments, and has the same beneficial effects as the vehicle thermal management system and the control method thereof, which will not be described herein.

[0122] In the above embodiments, the description of each embodiment has its own focus, and the parts not described or recorded in a certain embodiment can be referred to the related description of other embodiments.

[0123] The above embodiments are only used to illustrate the technical solutions of the present application, but not limit the present application; although the present application has been described in detail with reference to the foregoing embodiments, those skilled in the art should understand that the technical solutions recorded in the foregoing embodiments can be modified, or some technical features can be replaced by equivalent features; and these modifications or replacements do not make the essence of the corresponding technical solutions deviate from the spirit and scope of the technical solutions of the embodiments of the present application, and should be included in the protection scope of the present application.

Claims

1. A vehicle thermal management system, characterized in that: include: Motor heat exchange circuit, heat exchange circuit, battery heat exchange circuit, heat pump heat exchange circuit and engine heat exchange circuit; The motor heat exchange circuit is connected to the heat exchange circuit through a first control valve and a second control valve; the battery heat exchange circuit is provided with a first heat exchange module, and the heat exchange circuit is provided with a second heat exchange module, and the battery heat exchange circuit is connected to the second heat exchange module through the second control valve; the heat pump heat exchange circuit is connected to the second heat exchange module; the engine heat exchange circuit is connected to the heater module and the first heat exchange module respectively through a third control valve; The vehicle thermal management system further includes an on-board charger and a transmission oil cooler connected in parallel with the motor module in the motor heat exchange circuit; The heat pump heat exchange circuit includes a compressor, an indoor heat exchanger, an outdoor heat exchanger, and a gas-liquid separator; The heat pump heat exchange circuit is connected to the second heat exchange module, and includes: One end of the compressor is connected to one end of the indoor heat exchanger, the other end of the indoor heat exchanger is connected to one end of the outdoor heat exchanger via a first electronic expansion valve, the other end of the outdoor heat exchanger is connected to one end of the gas-liquid separator via a first stop valve, and the other end of the gas-liquid separator is connected to the other end of the compressor; The other end of the indoor heat exchanger is also connected to the third end of the second heat exchange module through a second stop valve and a second electronic expansion valve, the fourth end of the second heat exchange module is connected to the first valve port of the fifth control valve, and the second valve port of the fifth control valve is connected to one end of the gas-liquid separator; the third valve port of the fifth control valve is connected between the compressor and one end of the indoor heat exchanger; the other end of the outdoor heat exchanger is also connected to one end of the third stop valve, and the other end of the third stop valve is connected between the second stop valve and the second electronic expansion valve in one path, and is connected to one end of the gas-liquid separator through the third electronic expansion valve and the evaporator in the other path.

2. The vehicle thermal management system according to claim 1, characterized in that: The motor heat exchange circuit includes a motor module and a low-temperature radiator in the heat dissipation module; The motor heat exchange circuit is connected to the heat exchange circuit through a first control valve and a second control valve, including: One end of the motor module is connected to the first valve port of the second control valve through the first valve port and the second valve port of the first control valve, the second valve port of the second control valve is connected to the first end of the second heat exchange module, and the second end of the second heat exchange module is connected to the other end of the motor module; The third valve port of the first control valve is connected to one end of the low-temperature radiator, and the other end of the low-temperature radiator is connected to the other end of the motor module.

3. The vehicle thermal management system according to claim 2, characterized in that: The vehicle thermal management system also includes a fourth control valve; The vehicle thermal management system further includes an onboard charger and a transmission oil cooler connected in parallel with the motor module in the motor heat exchange circuit, including: The first valve port of the fourth control valve is connected to the other end of the low-temperature radiator, the second valve port of the fourth control valve is connected to one end of the on-board charger, the other end of the on-board charger is connected to one end of the transmission oil cooler, the other end of the transmission oil cooler is connected to one end of the motor module, and the third valve port of the fourth control valve is connected to the other end of the motor module.

4. The vehicle thermal management system according to claim 2, characterized in that: The battery heat exchange circuit includes a battery module; The battery heat exchange circuit is connected to the second heat exchange module through the second control valve, including: One end of the battery module is connected to the first end of the first heat exchange module, the second end of the first heat exchange module is connected to the first end of the second heat exchange module through the third valve port and the second valve port of the second control valve, and the second end of the second heat exchange module is also connected to the other end of the battery module.

5. The vehicle thermal management system according to claim 1, characterized in that: The engine heat exchange circuit includes an engine module and a high-temperature radiator in a heat dissipation module; The engine heat exchange circuit is connected to the heater module and the first heat exchange module respectively through a third control valve, including: One end of the engine module is connected to one end of the high-temperature radiator, and the other end of the high-temperature radiator is connected to the other end of the engine module; the other end of the engine module is also connected to one end of the heater module through the third valve port and the first valve port of the third control valve, and the other end of the heater module is connected to one end of the engine module; the other end of the engine module is also connected to the third end of the first heat exchange module through the third valve port and the second valve port of the third control valve, and the fourth end of the first heat exchange module is connected between the third valve port of the third control valve and the other end of the engine module.

6. A control method for a vehicle thermal management system, applied to the vehicle thermal management system according to any one of claims 1 to 5, characterized in that: The control method includes: Acquiring vehicle parameters, and determining a required operating condition of the vehicle thermal management system based on the vehicle parameters; Control the conduction directions of the first control valve, the second control valve, and the third control valve in the vehicle thermal management system so that the vehicle thermal management system operates in the required working conditions.

7. The control method of the vehicle thermal management system according to claim 6, characterized in that: Controlling the conduction direction of the first control valve, the second control valve, and the third control valve in the vehicle thermal management system so that the vehicle thermal management system operates in the desired operating condition includes: If the desired operating condition is that the motor waste heat is used to heat the battery, the first control valve and the second control valve are controlled to connect the motor module in the motor heat exchange circuit with the second heat exchange module in the heat exchange circuit, and the second control valve is controlled to connect the battery heat exchange circuit with the second heat exchange module, so that the motor module is connected to the battery heat exchange circuit through the second heat exchange module, so that the motor waste heat is used to heat the battery; If the desired operating condition is that the engine waste heat heats the battery, the second control valve is controlled to connect the battery heat exchange circuit to the first heat exchange module, and the third control valve is controlled to connect the engine heat exchange circuit to the first heat exchange module, so as to connect the battery heat exchange circuit to the engine heat exchange circuit through the first heat exchange module, so that the engine waste heat heats the battery; If the required operating condition is that the engine waste heat heats the battery and the motor, the first control valve and the second control valve are controlled to connect the motor module in the motor heat exchange circuit with the second heat exchange module in the heat exchange circuit, and the second control valve is controlled to connect the battery heat exchange circuit with the second heat exchange module and the first heat exchange module, and the third control valve is controlled to connect the engine heat exchange circuit with the first heat exchange module, so that the motor module and the battery heat exchange circuit are connected to the engine heat exchange circuit through the first heat exchange module and the second heat exchange module, so that the engine waste heat heats the battery and the motor.

8. The control method of the vehicle thermal management system according to claim 6, characterized in that: Controlling the conduction direction of the first control valve, the second control valve, and the third control valve in the vehicle thermal management system so that the vehicle thermal management system operates in the desired operating condition includes: If the desired operating condition is for the heat pump to absorb engine waste heat, controlling the third control valve to connect the engine heat exchange circuit to the first heat exchange module, and controlling the second control valve to connect the first heat exchange module to the second heat exchange module in the heat exchange circuit, so as to connect the heat pump heat exchange circuit to the engine heat exchange circuit through the first heat exchange module and the second heat exchange module, so that the heat pump absorbs engine waste heat; If the required operating condition is that the heat pump absorbs the waste heat of the motor, the first control valve and the second control valve are controlled to connect the motor module in the motor heat exchange circuit with the second heat exchange module in the heat exchange circuit, so as to connect the heat pump heat exchange circuit and the motor heat exchange circuit through the second heat exchange module, so that the heat pump absorbs the waste heat of the motor.

9. A vehicle, characterized in that: It comprises an electronic device and a vehicle thermal management system as described in any one of claims 1 to 5, wherein the electronic device comprises a memory, a processor, and a computer program stored in the memory and executable on the processor, and when the processor executes the computer program, the steps of the method as described in any one of claims 6 to 8 are implemented.

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