Thermal management system, vehicle and thermal management method

Abstract

The invention relates to the technical field of vehicles, in particular to a thermal management system, a vehicle and a thermal management method.The thermal management system comprises a first thermal management assembly, a second thermal management assembly and a control assembly, and the first thermal management assembly comprises a first switch unit and a first thermal management unit and is used for heating a passenger compartment or cooling the passenger compartment through a refrigerant; the second heat management assembly comprises a second switch unit and a second heat management unit and is used for conducting heat management on the passenger compartment and / or the battery pack and / or the electric drive system through cooling liquid. And the control assembly is used for controlling the first switch unit and the second switch unit to be in corresponding on-off states according to the current working mode of the thermal management system, so that thermal management is carried out through the first thermal management unit and the second thermal management unit. Therefore, the problems that a heat management system is low in heat utilization efficiency and redundant in structure are solved, redundant structures can be reduced, the cost and energy consumption are reduced, the battery heating efficiency is improved, and the vehicle endurance is improved.

Description

Technical Field

[0001] This application relates to the field of vehicle technology, and in particular to a thermal management system, a vehicle, and a thermal management method. Background Technology

[0002] While improving driving range, new energy vehicles also face challenges in battery thermal management, especially in winter heating and cold start. This places higher demands on the battery thermal management system, including more efficient heat dissipation technology and more advanced heat recovery and utilization, to ensure the stability and safety of battery performance, while extending battery life and improving the energy efficiency of the whole vehicle.

[0003] A thermal management system is proposed in the related technology, including: a heating circuit, on which a battery box, a heater, a first heat exchanger, an expansion tank and a first water pump are connected in series; the heater is used to heat the first coolant flowing in the heating circuit, and the first heat exchanger is used to release heat to heat the vehicle interior. The heater heats the battery box and the first heat exchanger by heating the first coolant.

[0004] However, the following defects exist in the related technologies: (1) The low-pressure section uses a gas-liquid separator, which results in high low-pressure flow resistance and high energy consumption; (2) Only the heat of the refrigerant is used for heating, and the heat in the refrigerant system is not reused multiple times; (3) The battery heating system cannot directly utilize the heat of the heat pump or PTC, and must be heated by heat exchange through a liquid heat exchanger, resulting in low heat exchange efficiency of battery heating. Summary of the Invention

[0005] This application provides a thermal management system, a vehicle, and a thermal management method to solve the problems of low battery heat utilization efficiency and redundant vehicle structure in related technologies. It can reduce redundant structures, lower costs and energy consumption, improve battery heating efficiency, and increase the pure electric range of the vehicle.

[0006] A first aspect of this application provides a thermal management system, including: a first thermal management component, a second thermal management component, and a control component, wherein...

[0007] The first thermal management component includes a first switching unit and a first thermal management unit, wherein the first thermal management unit is used to heat the passenger compartment or cool the passenger compartment using a refrigerant.

[0008] The second thermal management component includes a second switching unit and a second thermal management unit, the second thermal management unit being used to perform thermal management of the passenger compartment and / or battery pack and / or electric drive system using coolant;

[0009] A control component is connected to the first switching unit, the first thermal management unit, the second switching unit, and the second thermal management unit, respectively, and is used to control the first switching unit and the second switching unit to be in corresponding switching states according to the current working mode of the thermal management system, so as to perform thermal management through the first thermal management unit and the second thermal management unit.

[0010] Optionally, in some embodiments, the first switching unit includes first to fourth valves, first to third one-way valves, and first to third electronic expansion valves; the first thermal management unit includes: a compressor, a first condenser, a first heat exchanger, a liquid storage unit, a second heat exchanger, a first refrigeration unit, and an evaporator.

[0011] The input end of the compressor is connected to the first output end of the first heat exchanger, and the output end of the compressor is connected to the input end of the first condenser.

[0012] The output end of the first condenser is connected to one end of the third valve and one end of the fourth valve, respectively.

[0013] One end of the second heat exchanger is connected to one end of the first valve and the other end of the third valve, respectively; the other end of the second heat exchanger is connected to the inlet of the second check valve and the outlet of the third check valve, respectively.

[0014] One end of the liquid storage device is connected to the other end of the fourth valve and the outlet of the second one-way valve, respectively, and the other end of the liquid storage device is connected to the first input end of the first heat exchanger.

[0015] One end of the first refrigeration element is connected to one end of the second electronic expansion valve, the other end of the first refrigeration element is connected to the second input end of the first heat exchange element, and the other end of the second electronic expansion valve is connected to the second output end of the first heat exchange element.

[0016] One end of the evaporator is connected to one end of the first electronic expansion valve, and the other end of the evaporator is connected to one end of the third electronic expansion valve and one end of the second valve, respectively. The other end of the first electronic expansion valve is connected to the second output end of the first heat exchanger, the other end of the third electronic expansion valve is connected to the inlet of the third one-way valve, and the other end of the second valve is connected to the second input end of the first heat exchanger.

[0017] Optionally, in some embodiments, the second switching unit includes a multi-way valve and a three-way valve, and the second thermal management unit includes an electrically driven water pump, electrically driven electronic control components, a heat dissipation component, a battery water pump, a battery pack, a heater water pump, a second condenser, a heating component, a heater, and a second cooling component, wherein...

[0018] One end of the electric water pump is connected to one end of the electric drive control component, and the other end of the electric water pump is connected to the first valve port of the multi-way valve.

[0019] The other end of the electric drive and control component is connected to the second valve port of the multi-way valve.

[0020] One end of the heat sink is connected to the third valve port of the multi-way valve, and the other end of the heat sink is connected to the fourth valve port of the multi-way valve.

[0021] One end of the battery water pump is connected to the fifth valve port of the multi-way valve, and the other end of the battery water pump is connected to one end of the battery pack.

[0022] The other end of the battery pack is connected to the sixth valve port of the multi-way valve;

[0023] One end of the warm air water pump is connected to the seventh valve port of the multi-way valve and the third port of the three-way valve, respectively, and the other end of the warm air water pump is connected to one end of the second condenser.

[0024] The other end of the second condenser is connected to one end of the heating element;

[0025] The other end of the heating element is connected to the warm air element;

[0026] The other end of the heating element is connected to the first port of the three-way valve, and the second port of the three-way valve is connected to the eighth port of the multi-way valve.

[0027] One end of the second refrigeration component is connected to the ninth valve port of the multi-way valve, and the other end of the second refrigeration component is connected to the tenth valve port of the multi-way valve.

[0028] Optionally, in some embodiments, the operating modes include a first operating mode to a thirteenth operating mode, and when the current operating mode is the first operating mode, the control component is used to:

[0029] The second and third valves are opened, while the first and fourth valves are closed;

[0030] The system controls the sixth valve port of the multi-way valve to connect with the ninth valve port, controls the tenth valve port to connect with the fifth valve port, controls the first valve port to connect with the third valve port, controls the second valve port to connect with the fourth valve port, controls the first port of the three-way valve to connect with the third port, and controls the first port and the second port to close.

[0031] Optionally, in some embodiments, when the current operating mode is the second operating mode, the control component is further configured to:

[0032] The second valve and the fourth valve are opened, while the first valve and the third valve are closed;

[0033] The system controls the tenth valve port of the multi-way valve to connect with the first valve port, controls the second valve port to connect with the fourth valve port, controls the third valve port to connect with the ninth valve port, controls the third valve port to connect with the fifth valve port, controls the sixth valve port to connect with the seventh valve port, controls the first port of the three-way valve to connect with the third port, and controls the first port and the second port to close.

[0034] Optionally, in some embodiments, when the current operating mode is the third operating mode, the control component is further configured to:

[0035] The first valve and the fourth valve are opened, while the second valve and the third valve are closed;

[0036] The third valve port of the multi-way valve is connected to the first valve port, the second valve port is connected to the fourth valve port, the tenth valve port is connected to the fifth valve port, and the sixth valve port is connected to the ninth valve port. The first port of the three-way valve is connected to the third port, and the first port and the second port are closed.

[0037] Optionally, in some embodiments, when the current operating mode is the fourth operating mode, the control component is further configured to:

[0038] The second valve and the fourth valve are opened, while the first valve and the third valve are closed;

[0039] The system controls the tenth valve port of the multi-way valve to connect with the first valve port, the second valve port to connect with the fourth valve port, the third valve port to connect with the ninth valve port, the eighth valve port to connect with the fifth valve port, and the sixth valve port to connect with the seventh valve port. The system also controls the first port of the three-way valve to connect with the third port, and controls the first port and the second port to close.

[0040] Optionally, in some embodiments, when the current operating mode is the fifth operating mode, the control component is further configured to:

[0041] The first valve and the fourth valve are opened, while the second valve and the third valve are closed;

[0042] The second valve port of the multi-way valve is connected to the fifth valve port, the sixth valve port is connected to the ninth valve port, and the tenth valve port is connected to the first valve port. The first port of the three-way valve is connected to the third port, and the first port and the second port are closed.

[0043] Optionally, in some embodiments, when the current operating mode is the sixth operating mode, the control component is further configured to:

[0044] The first and fourth valves are opened, while the second and third valves are closed.

[0045] The second valve port of the multi-way valve is connected to the ninth valve port, the tenth valve port is connected to the first valve port, the eighth valve port is connected to the fifth valve port, and the sixth valve port is connected to the seventh valve port. The first port and the third port of the three-way valve are also controlled to open according to a first preset ratio.

[0046] Optionally, in some embodiments, when the current operating mode is the seventh operating mode, the control component is further configured to:

[0047] Control the first valve and the fourth valve to open, control the second valve and the third valve to close, and control the second electronic expansion valve to close;

[0048] The second valve port of the multi-way valve is connected to the ninth valve port, the tenth valve port is connected to the first valve port, the eighth valve port is connected to the fifth valve port, the sixth valve port is connected to the seventh valve port, and the first port of the three-way valve is connected to the third port, while the first port and the second port are closed.

[0049] Optionally, in some embodiments, when the current operating mode is the eighth operating mode, the control component is further configured to:

[0050] Control the first valve and the fourth valve to open, control the second valve and the third valve to close, and control the second electronic expansion valve to open;

[0051] The second valve port of the multi-way valve is connected to the ninth valve port, the tenth valve port is connected to the first valve port, the eighth valve port is connected to the fifth valve port, the sixth valve port is connected to the seventh valve port, and the first port of the three-way valve is connected to the third port, while the first port and the second port are closed.

[0052] Optionally, in some embodiments, when the current operating mode is the ninth operating mode, the control component is further configured to:

[0053] The third valve is opened, while the first valve, the second valve, and the fourth valve are closed.

[0054] The second valve port of the multi-way valve is connected to the ninth valve port, the tenth valve port is connected to the first valve port, the eighth valve port is connected to the fifth valve port, the sixth valve port is connected to the seventh valve port, and the first port of the three-way valve is connected to the third port, while the first port and the second port are closed.

[0055] Optionally, in some embodiments, when the current operating mode is the tenth operating mode, the control component is further configured to:

[0056] The fourth valve is opened, while the first, second, and third valves are closed.

[0057] The second valve port of the multi-way valve is connected to the ninth valve port, the tenth valve port is connected to the first valve port, the eighth valve port is connected to the fifth valve port, the sixth valve port is connected to the seventh valve port, and the first port of the three-way valve is connected to the third port, while the first port and the second port are closed.

[0058] Optionally, in some embodiments, when the current operating mode is the eleventh operating mode, the control component is further configured to:

[0059] The fourth valve is opened, while the first, second, and third valves are closed.

[0060] The second valve port of the multi-way valve is connected to the ninth valve port, the tenth valve port is connected to the first valve port, the eighth valve port is connected to the fifth valve port, the sixth valve port is connected to the seventh valve port, and the first port and the third port of the three-way valve are controlled to open according to a first preset ratio.

[0061] Optionally, in some embodiments, when the current operating mode is the twelfth operating mode, the control component is further configured to:

[0062] The second and fourth valves are opened, while the first and third valves are closed.

[0063] The system controls the tenth valve port of the multi-way valve to connect with the first valve port, the second valve port to connect with the fourth valve port, the third valve port to connect with the fifth valve port, and the sixth valve port to connect with the ninth valve port. The system also controls the first port of the three-way valve to connect with the third port, and controls the first port and the second port to close.

[0064] Optionally, in some embodiments, when the current operating mode is the thirteenth operating mode, the control component is further configured to:

[0065] The first thermal management unit is controlled to be in a stopped working state, and the tenth valve port of the multi-way valve is connected to the first valve port, the second valve port is connected to the third valve port, the fourth valve port is connected to the fifth valve port, the sixth valve port is connected to the seventh valve port, and the eighth valve port is connected to the ninth valve port.

[0066] A second aspect of this application provides a vehicle including a thermal management system as described above.

[0067] A third aspect of this application provides a thermal management method employing the thermal management system described above, wherein the method includes the following steps:

[0068] Obtain the current operating mode of the thermal management system;

[0069] Determine the first target switching state of the first switching unit and the second target switching state of the second switching unit based on the current operating mode;

[0070] Based on the first target switch state, the multiple switches of the first switch unit are controlled to be in the corresponding switch state, and based on the second target switch state, the multiple switches of the second switch unit are controlled to be in the corresponding switch state, so as to perform thermal management through the first thermal management unit and the second thermal management unit.

[0071] Therefore, this application has at least the following beneficial effects:

[0072] (1) The embodiments of this application use superheat control and gas separation design to reduce flow resistance, thereby reducing energy consumption for cooling and heating and increasing driving range.

[0073] (2) The embodiments of this application can reuse the waste heat after the refrigerant condenses to preheat the air passing through the evaporator, making full use of the heat in the system.

[0074] (3) The battery thermal management system of this application uses the PTC and heat pump heat source of the heating system to directly heat the battery, reducing intermediate heat exchangers and water heaters, improving the heating efficiency of the battery, and reducing costs.

[0075] Additional aspects and advantages of this application will be set forth in part in the description which follows, and in part will be obvious from the description, or may be learned by practice of this application. Attached Figure Description

[0076] The above and / or additional aspects and advantages of this application will become apparent and readily understood from the following description of the embodiments taken in conjunction with the accompanying drawings, wherein:

[0077] Figure 1 This is a block diagram of a thermal management system provided according to an embodiment of this application;

[0078] Figure 2 This is a schematic diagram of a first thermal management component provided according to an embodiment of this application;

[0079] Figure 3 This is a schematic diagram of a second thermal management component provided according to an embodiment of this application;

[0080] Figure 4 A schematic diagram of a first thermal management component in a first operating mode according to an embodiment of this application;

[0081] Figure 5 This is a schematic diagram of a second thermal management component in a first operating mode according to an embodiment of this application;

[0082] Figure 6 A schematic diagram of a first thermal management component in a second operating mode according to an embodiment of this application;

[0083] Figure 7 This is a schematic diagram of a second thermal management component in a second operating mode according to an embodiment of this application;

[0084] Figure 8 This is a schematic diagram of a first thermal management component in a third operating mode according to an embodiment of this application;

[0085] Figure 9 This is a schematic diagram of a second thermal management component in a third operating mode according to an embodiment of this application;

[0086] Figure 10 This is a schematic diagram of a first thermal management component in a fourth operating mode according to an embodiment of this application;

[0087] Figure 11 This is a schematic diagram of a second thermal management component in a fourth operating mode according to an embodiment of this application;

[0088] Figure 12 A schematic diagram of a first thermal management component in a fifth operating mode according to an embodiment of this application;

[0089] Figure 13 This is a schematic diagram of a second thermal management component in a fifth operating mode according to an embodiment of this application;

[0090] Figure 14 A schematic diagram of a first thermal management component in a sixth operating mode according to an embodiment of this application;

[0091] Figure 15This is a schematic diagram of a second thermal management component in a sixth operating mode according to an embodiment of this application;

[0092] Figure 16 This is a schematic diagram of a first thermal management component in a seventh operating mode according to an embodiment of this application;

[0093] Figure 17 This is a schematic diagram of a second thermal management component in a seventh operating mode according to an embodiment of this application;

[0094] Figure 18 A schematic diagram of a first thermal management component in an eighth operating mode according to an embodiment of this application;

[0095] Figure 19 This is a schematic diagram of a second thermal management component in an eighth operating mode according to an embodiment of this application;

[0096] Figure 20 This is a schematic diagram of a first thermal management component in a ninth operating mode according to an embodiment of this application;

[0097] Figure 21 This is a schematic diagram of a second thermal management component in a ninth operating mode according to an embodiment of this application;

[0098] Figure 22 This is a schematic diagram of a first thermal management component in a tenth operating mode according to an embodiment of this application;

[0099] Figure 23 This is a schematic diagram of a second thermal management component in a tenth operating mode according to an embodiment of this application;

[0100] Figure 24 A schematic diagram of a first thermal management component in an eleventh operating mode according to an embodiment of this application;

[0101] Figure 25 This is a schematic diagram of a second thermal management component in an eleventh operating mode according to an embodiment of this application;

[0102] Figure 26 A schematic diagram of a first thermal management component in a twelfth operating mode according to an embodiment of this application;

[0103] Figure 27 This is a schematic diagram of a second thermal management component in a twelfth operating mode according to an embodiment of this application;

[0104] Figure 28 This is a schematic diagram of a second thermal management component in a thirteenth operating mode according to an embodiment of this application;

[0105] Figure 29 This is a flowchart of a thermal management method provided according to an embodiment of this application. Detailed Implementation

[0106] The embodiments of this application are described in detail below. Examples of these embodiments are shown in the accompanying drawings, wherein the same or similar reference numerals denote the same or similar elements or elements having the same or similar functions throughout. The embodiments described below with reference to the accompanying drawings are exemplary and intended to explain this application, and should not be construed as limiting this application.

[0107] The following description, with reference to the accompanying drawings, describes a thermal management system, vehicle, and thermal management method according to embodiments of this application. Addressing the issues of low battery heat utilization efficiency and redundant vehicle structure mentioned in the background art, this application provides a thermal management system. In this method, a first thermal management unit heats the passenger compartment or cools the passenger compartment using a refrigerant, while a second thermal management unit uses coolant to perform thermal management on the passenger compartment, and / or the battery pack, and / or the electric drive system. A control component controls a first switching unit and a second switching unit to be in corresponding switching states according to the current operating mode of the thermal management system, thereby performing thermal management through the first and second thermal management units. This solves the problems of low battery heat utilization efficiency and redundant vehicle structure in related technologies, reducing redundant structures, lowering costs and energy consumption, improving battery heating efficiency, and increasing the vehicle's pure electric range.

[0108] Specifically, Figure 1 This is a block diagram of a thermal management system provided in an embodiment of this application.

[0109] like Figure 1 As shown, the thermal management system 10 includes: a first thermal management component 100, a second thermal management component 200, and a control component 300.

[0110] The first thermal management component 100 includes a first switching unit and a first thermal management unit, which is used to heat the passenger compartment or cool the passenger compartment using refrigerant. The second thermal management component 200 includes a second switching unit and a second thermal management unit, which is used to perform thermal management on the passenger compartment and / or battery pack and / or electric drive system using coolant. The control component 300 is connected to the first switching unit, the first thermal management unit, the second switching unit, and the second thermal management unit, respectively, and is used to control the first switching unit and the second switching unit to be in the corresponding switching state according to the current working mode of the thermal management system, so as to perform thermal management through the first thermal management unit and the second thermal management unit.

[0111] Specifically, in this embodiment, a refrigerant circuit can be constructed using a first thermal management component to cool the passenger compartment using refrigerant, and a coolant circuit can be constructed using a second thermal management component to perform thermal management on the passenger compartment, battery pack, and electric drive system using coolant. The first and second thermal management components include a first switching unit and a second switching unit. According to different operating modes, the first and second switching units are controlled to be in different switching states, thereby controlling different heating / cooling devices to achieve heating or cooling of the passenger compartment, or cooling of the electric drive system, or heating / cooling of the battery pack. In addition, it can also achieve defrosting of the low-temperature radiator and the outdoor heat exchanger to meet the thermal management needs of different operating modes.

[0112] Optionally, in some embodiments, the first switching unit includes first to fourth valves, first to third one-way valves, and first to third electronic expansion valves; the first thermal management unit includes: a compressor, a first condenser, a first heat exchanger, a liquid storage unit, a second heat exchanger, a first refrigeration unit, and an evaporator. The input end of the compressor is connected to the first output end of the first heat exchanger, and the output end of the compressor is connected to the input end of the first condenser. The output end of the first condenser is connected to one end of the third valve and one end of the fourth valve, respectively. One end of the second heat exchanger is connected to one end of the first valve and the other end of the third valve, respectively, and the other end of the second heat exchanger is connected to the inlet of the second one-way valve and the outlet of the third one-way valve, respectively. One end of the liquid storage component is connected to the other end of the fourth valve and the outlet of the second check valve, respectively; the other end of the liquid storage component is connected to the first input end of the first heat exchange component; one end of the first refrigeration component is connected to one end of the second electronic expansion valve, the other end of the first refrigeration component is connected to the second input end of the first heat exchange component, and the other end of the second electronic expansion valve is connected to the second output end of the first heat exchange component; one end of the evaporator is connected to one end of the first electronic expansion valve, the other end of the evaporator is connected to one end of the third electronic expansion valve and one end of the second valve, respectively; the other end of the first electronic expansion valve is connected to the second output end of the first heat exchange component; the other end of the third electronic expansion valve is connected to the inlet of the third check valve, and the other end of the second valve is connected to the second input end of the first heat exchange component.

[0113] The compressor can be an ECP (Electronic Control Panel), the first condenser can be a WCDS (Water Cooling Direct System), the first heat exchanger can be an IHX (Indirect Heat Exchanger), the liquid receiver can be a R / D (Liquid Receiver Tank), the second heat exchanger can be an OHX (Outdoor Heat Exchanger), the first refrigeration unit can be a Chiller (Battery Cooler), the evaporator can be an Evap (Evap) in an HVAC unit, the first and fourth valves are normally closed valves SOV1 and SOV4, the second and third valves are normally open valves SOV2 and SOV3, the first to third electronic expansion valves are EXV1, EXV2, and EXV3, and it should be noted that the third electronic expansion valve is a large-diameter electronic expansion valve, and the first to third check valves are R-CV1, R-CV2, and R-CV3. Among them, the compressor ECP is used to circulate the refrigerant; the Chiller / EXV2 is used to absorb heat or cool the water circuit; the electronic expansion valve EXV1 is used for refrigeration expansion; the large-diameter electronic expansion valve EXV3 is used to preheat and boost the evaporator in low-temperature heat pumps, and to reduce the inlet refrigerant pressure of the evaporator when used in low-temperature heat pumps; and the WCDS is used to transfer heat to the water circuit to achieve a temperature rise in the water circuit.

[0114] Specifically, such as Figure 2 As shown, in this embodiment of the application, a refrigerant circuit can be constructed using a first thermal management component, wherein the compressor, the first condenser, the liquid receiver, and the first heat exchanger are connected in series in sequence; the first condenser and the second heat exchanger can be connected in series or in parallel using a third electric valve and a fourth electronic valve, and the evaporator is connected in parallel with the first refrigeration component; the first electronic expansion valve, the evaporator, and the second valve are connected in series in sequence; the second electronic expansion valve and the first refrigeration component are connected in series in sequence, and the third electronic expansion valve, the third check valve, the second heat exchanger, the first valve, and the first check valve are connected in series in sequence.

[0115] It should be noted that the refrigerant circuit in this embodiment of the application also includes first to fourth temperature detection points T1-T4, high-pressure detection point P1, and medium-pressure detection point P2, which are used to monitor the refrigerant circuit.

[0116] Optionally, in some embodiments, the second switching unit includes a multi-way valve and a three-way valve, and the second thermal management unit includes an electric water pump, an electric drive control component, a heat sink, a battery water pump, a battery pack, a heater water pump, a second condenser, a heater, a heater, and a second refrigeration component. One end of the electric water pump is connected to one end of the electric drive control component, and the other end of the electric water pump is connected to the first valve port of the multi-way valve. The other end of the electric drive control component is connected to the second valve port of the multi-way valve. One end of the heat sink is connected to the third valve port of the multi-way valve, and the other end of the heat sink is connected to the fourth valve port of the multi-way valve. One end of the battery water pump is connected to the fifth valve port of the multi-way valve. One end of the battery water pump is connected to the other end of the battery pack; the other end of the battery pack is connected to the sixth valve port of the multi-way valve; one end of the heater water pump is connected to the seventh valve port of the multi-way valve and the third port of the three-way valve, and the other end of the heater water pump is connected to one end of the second condenser; the other end of the second condenser is connected to one end of the heating element; the other end of the heating element is connected to the heater; the other end of the heater is connected to the first port of the three-way valve, and the second port of the three-way valve is connected to the eighth valve port of the multi-way valve; one end of the second refrigeration element is connected to the ninth valve port of the multi-way valve, and the other end of the second refrigeration element is connected to the tenth valve port of the multi-way valve.

[0117] The multi-way valve can be a ten-way valve, the three-way valve can be a proportional three-way valve, the electric drive and control components can include a power IPS, an intelligent driving controller, and a rear electric drive, the heat dissipation component can be a low-temperature radiator (LTR), the second cooling component can be a chiller, the heating component can be a PTC, and the warm air component can be a warm air core. In addition, the second thermal management unit in this embodiment also includes an expansion tank (Water Tank 1) and a manual on / off valve.

[0118] Specifically, in this embodiment, the electric drive water pump, power supply, intelligent driving controller, and rear power supply are connected in series to form the electric drive branch; the battery water pump and battery pack are connected in series to form the battery branch; the heater water pump WP2, the second condenser WCDS, the heater PTC, and the heater unit Heater are connected in series to form the heater branch. In this embodiment, the heater branch and the battery branch can be connected in series or in parallel by a three-way valve and a multi-way valve, and the second refrigeration unit, the heat dissipation unit, the battery branch, and the electric drive branch can be connected in series by a multi-way valve to meet the thermal management requirements in different modes.

[0119] Those skilled in the art will understand that, in the embodiments of this application, the first thermal management component and the second thermal management component share a chiller, a WCDS condenser, and a heating, ventilation, and air conditioning (HVAC) unit. The chiller integrates a first refrigeration component and a second refrigeration component, the WCDS integrates a first condenser and a second condenser, and the HVAC unit integrates an evaporator and a heater. The WCDS can absorb heat from the refrigerant circuit and use it to heat the coolant circuit. The HVAC unit can preheat the warm air entering the heater through the heat from the refrigerant circuit, thereby achieving multi-stage energy utilization and improving energy efficiency.

[0120] Optionally, in some embodiments, the operating modes include a first operating mode to a thirteenth operating mode. When the current operating mode is the first operating mode, the control component 300 is used to: control the second valve and the third valve to open, and the first valve and the fourth valve to close; control the sixth valve port of the multi-way valve to connect with the ninth valve port, control the tenth valve port to connect with the fifth valve port, control the first valve port to connect with the third valve port, control the second valve port to connect with the fourth valve port, and control the first port and the third port of the three-way valve to connect, and control the first port and the second port to close.

[0121] The first operating mode is a combination of crew cabin cooling and dehumidification, battery rapid cooling, and electric drive cooling. It requires ECP to cool the crew cabin and rapidly cool the battery, while the electric drive is cooled and dissipated through LTR.

[0122] In the first operating mode, the refrigerant circuit is as follows: Figure 4 As shown, in this embodiment of the application, the third valve and the second valve can be controlled to open, while the first valve and the fourth valve are closed. At this time, the refrigerant circuit consists of a compressor, a first condenser, a third valve, a second heat exchanger, a second check valve, a liquid receiver, a first heat exchanger, a second electronic expansion valve, a first refrigeration component / first electronic expansion valve, an evaporator, and a second valve, which constitute the refrigerant circulation.

[0123] In actual operation, the compressor compresses the refrigerant into a high-temperature, high-pressure liquid or gaseous state, which then enters the first condenser for condensation and liquefaction. The heat in the refrigerant is then dissipated into the atmosphere through the first heat exchanger. Excess refrigerant is stored through a liquid receiver pipe. The refrigerant then enters the first refrigeration unit through the first electronic expansion valve and the evaporator through the second electronic expansion valve. The refrigerant is then cooled and dehumidified to become a low-temperature, low-pressure refrigerant. Finally, the low-temperature, low-pressure refrigerant is reprocessed by the compressor for circulation.

[0124] Specifically, the compressor ECP operates, turning into high-pressure, high-temperature refrigerant. The refrigerant dissipates heat through the outdoor heat exchanger OHX. SOV2 and SOV3 are turned on, while SOV1 and SOV4 are turned off. The refrigerant expands through EXV1 and EXV2, and the evaporators Evap and Chiller evaporate and absorb heat, allowing the passenger compartment and battery to be cooled down rapidly.

[0125] The coolant circuit in the first operating mode is as follows Figure 5 As shown, in this embodiment of the application, the third valve port of the multi-way valve can be connected to the first valve port, and the second valve port and the fourth valve port can be connected. At this time, the electric drive circuit and the heat sink form a circuit, and the heat sink cools the electric drive system. The sixth valve port is connected to the ninth valve port, and the tenth valve port and the fifth valve port are connected. At this time, the battery pack is cooled by the second cooling component. The heating circuit works independently by connecting the first port and the third port of the three-way valve.

[0126] Specifically, when the multi-way valves (6 / 9, 10 / 5, 3 / 1, 2 / 4) are connected, the electric drive water pump WP1 and the battery water pump WP3 operate, respectively sending coolant to the motor and battery to remove heat from the two components. The electric drive dissipates heat into the air through the low-temperature radiator LTR, and the battery lowers the temperature through the chiller. When the passenger compartment requires dual-temperature zones or supplemental heating of the exhaust air, the proportional three-way valve AC is connected (AB is closed), and the heater water pump WP2 operates. The coolant, through WCDS and water PTC (which is not powered at this time), transfers heat from the refrigerant side to the heater core Heater to heat the cold air that has been dehumidified by the evaporator.

[0127] Optionally, in some embodiments, when the current operating mode is the second operating mode, the control component 300 is further configured to: control the second valve and the fourth valve to open, and the first valve and the third valve to close; control the tenth valve port of the multi-way valve to connect with the first valve port, control the second valve port to connect with the fourth valve port, control the third valve port to connect with the ninth valve port, control the third valve port to connect with the fifth valve port, control the sixth valve port to connect with the seventh valve port, and control the first port of the three-way valve to connect with the third port, and control the first port and the second port to close.

[0128] The second operating mode is a combination of crew cabin self-circulation dehumidification, battery self-circulation, and electric drive rapid cooling mode. The ECP cools and dehumidifies the crew cabin, the battery maintains a constant temperature and self-circulates, and the electric drive dissipates heat through LTR and Chiller.

[0129] In the second operating mode, the refrigerant circuit is as follows: Figure 6 As shown, in this embodiment of the application, the first and third valves are closed, and the second and fourth valves are opened. The refrigerant circuit consists of a compressor (ECP), a first condenser (WCDS), a fourth valve (SOV4), a liquid receiver (R / D), a first heat exchanger (IHX), a second electronic expansion valve (EXV2) + Chiller / a first electronic expansion valve (EXV1) + evaporator + shut-off valve (SOV2), and refrigerant piping, etc.

[0130] In actual operation, the compressor ECP works, turning into high-pressure, high-temperature refrigerant. The refrigerant dissipates heat through the outdoor heat exchanger OHX and the water-cooled condenser WCDS. SOV2 and SOV3 are turned on, while SOV1 and SOV4 are turned off. The refrigerant absorbs heat through the EXV1+ evaporator / EXV2+ Chiller, enabling the passenger compartment to be cooled and dehumidified, and the electric drive system to achieve cooling.

[0131] In the second operating mode, the coolant circuit is as follows: Figure 7 As shown, the tenth valve port of the multi-way valve is connected to the first valve port, the second valve port is connected to the fourth valve port, and the third valve port is connected to the ninth valve port. The electric drive circuit is connected in series with the heat sink and the second refrigeration unit, and the heat sink and the second refrigeration unit dissipate heat for the electric drive system. The eighth valve port is connected to the fifth valve port, and the sixth valve port is connected to the seventh valve port, and the battery performs self-circulation. The first port and the third port of the three-way valve are connected, and the heating circuit works independently.

[0132] In actual operation, when the multi-way valves (10 / 1, 2 / 4, 3 / 9) are connected, the electric drive water pump WP1 operates, sending the coolant cooled by the chiller to the motor and carrying away the heat from the electric drive and control system. The electric drive then dissipates the heat into the air through the low-temperature radiator (LTR). When the multi-way valves (8 / 5, 6 / 7) are connected, the proportional three-way valve AC is connected (AB is closed), and the battery water pump WP3 operates. The coolant is connected to the battery pack through the multi-way valve and pipeline GF to achieve battery temperature equalization and self-circulation. When the passenger compartment requires dual-temperature zones or exhaust air reheating, the proportional three-way valve AC is connected (AB is closed), and the heater water pump WP2 operates. The coolant, through the WCDS and water PTC (which is not powered at this time), transfers the heat from the refrigerant side to the heater core (Heater) to heat the dehumidified cold air through the evaporator.

[0133] Optionally, in some embodiments, when the current operating mode is the third operating mode, the control component 300 is further configured to: control the first valve and the fourth valve to open, and the second valve and the third valve to close; control the third valve port of the multi-way valve to connect with the first valve port, the second valve port to connect with the fourth valve port, the tenth valve port to connect with the fifth valve port, and the sixth valve port to connect with the ninth valve port; and control the first port of the three-way valve to connect with the third port, and control the first port and the second port to close.

[0134] The third operating mode is an air source heat pump dehumidification, battery temperature equalization, and electric drive cooling mode. The ECP cools and dehumidifies the passenger compartment, the battery temperature equalization is self-circulating, and the electric drive is cooled and dissipated through LTR and Chiller.

[0135] In the third operating mode, the refrigerant circuit is as follows: Figure 8As shown, the refrigerant circulation consists of a compressor, a first condenser, a fourth valve, a liquid receiver, a first electronic expansion valve, an evaporator, a third electronic expansion valve, a third check valve, a second heat exchanger, a first valve, and a first check valve.

[0136] In actual operation, the compressor ECP works, turning into high-pressure and high-temperature refrigerant. The water-cooled condenser WCDS dissipates heat, SOV1 and SOV4 are turned on, and SOV2 and SOV3 are turned off. The refrigerant evaporates and absorbs heat through EXV1+ evaporator / EXV3+ outdoor heat exchanger OHX, thus cooling and dehumidifying the passenger compartment.

[0137] In the third operating mode, the coolant circuit is as follows: Figure 9 As shown, the third valve port of the multi-way valve is connected to the first valve port, and the second valve port is connected to the fourth valve port, so that the heat sink can dissipate heat for the electric drive system; the tenth valve port is connected to the fifth valve port, and the sixth valve port is connected to the ninth valve port, so that the second cooling unit can cool the battery pack; when the third port and the first port of the three-way valve are open, the heating circuit works independently.

[0138] In actual operation, when the multi-way valves (3 / 1, 2 / 4) are connected, the electric drive water pump WP1 operates, sending coolant to the motor and carrying away the heat from the electric drive. The electric drive then dissipates the heat into the air through the low-temperature radiator (LTR). When the multi-way valves (10 / 5, 6 / 9) are connected, the battery water pump WP3 operates, sending coolant to the battery and achieving temperature equalization and self-circulation through the chiller. When the passenger compartment requires dual-temperature zones or supplemental heating of the exhaust air, the proportional three-way valve AC is connected (AB is closed), and the heater water pump WP2 operates. The coolant transfers heat from the refrigerant side through the WCDS (if the WCDS outlet water temperature is insufficient, the water PTC is powered on to heat the air) to the heater core (Heater) to heat the dehumidified cold air after passing through the evaporator.

[0139] Optionally, in some embodiments, when the current operating mode is the fourth operating mode, the control component 300 is further configured to: control the second valve and the fourth valve to open, and the first valve and the third valve to close; control the tenth valve port of the multi-way valve to connect with the first valve port, the second valve port to connect with the fourth valve port, the third valve port to connect with the ninth valve port, the eighth valve port to connect with the fifth valve port, and the sixth valve port to connect with the seventh valve port; and control the first port of the three-way valve to connect with the third port, and control the first port and the second port to close.

[0140] The fourth operating mode is a water source heat pump dehumidification, battery temperature equalization, and electric drive cooling mode. It requires ECP to cool and dehumidify the crew cabin, battery temperature equalization is self-circulating, and electric drive is cooled and dissipated through LTR and Chiller.

[0141] In the fourth operating mode, the refrigerant circuit is as follows: Figure 10As shown, the fourth and second valves are open, while the first and third valves are closed. The refrigerant circuit consists of a compressor, a first condenser, a fourth valve, a liquid receiver, a first heat exchanger, a second electronic expansion valve + a first refrigeration unit / a first electronic expansion valve + an evaporator + a second valve.

[0142] In actual operation, the compressor ECP works, turning into high-pressure and high-temperature refrigerant. The refrigerant dissipates heat through the water-cooled condenser WCDS. SOV2 and SOV4 are turned on, while SOV1 and SOV3 are turned off. The refrigerant absorbs heat through the EXV1+ evaporator / EXV2+ Chiller, enabling the passenger compartment to be cooled and dehumidified, and the electric drive system to achieve cooling.

[0143] In the fourth operating mode, the coolant circuit is as follows: Figure 11 As shown, the tenth valve port of the multi-way valve is connected to the first valve port, the second valve port is connected to the fourth valve port, and the third valve port is connected to the ninth valve port. The second refrigeration component and the heat dissipation component dissipate heat for the electric drive system. The eighth valve port is connected to the fifth valve port, and the seventh valve port is connected to the sixth valve port. The battery performs temperature equalization and self-circulation. The first and third ports of the three-way valve are open, and the second port is closed. The heating circuit works independently.

[0144] In actual operation, when the multi-way valves (10 / 1, 2 / 4, 3 / 9) are connected, the electric drive water pump WP1 operates, sending the coolant cooled by the chiller to the motor and carrying away the heat from the electric drive and control system. The electric drive then dissipates the heat into the air through the low-temperature radiator (LTR). When the multi-way valves (8 / 5, 6 / 7) are connected, the proportional three-way valve AC is connected (AB closed), and the battery water pump WP3 operates. The coolant is connected to the battery pack through the multi-way valve and pipeline GF to achieve battery temperature equalization and self-circulation. When the passenger compartment requires dual-temperature zones or exhaust air reheating, the proportional three-way valve AC is connected (AB closed), and the heater water pump WP2 operates. The coolant, through the WCDS and water PTC (operating without power), transfers the heat from the refrigerant side to the heater core (Heater) to heat the dehumidified cold air after it has passed through the evaporator.

[0145] It should be noted that the evaporator in the first thermal management component and the heater in the second thermal management component share the HAVC system. In the refrigerant circuit, the evaporator absorbs heat from the refrigerant side, which can be used for preheating the heater. At the same time, the WCDS can also use the heat absorbed from the refrigerant side to heat the cold air, achieving multi-layered energy utilization and increasing energy efficiency.

[0146] Optionally, in some embodiments, when the current operating mode is the fifth operating mode, the control component 300 is further configured to: control the first valve and the fourth valve to open, and the second valve and the third valve to close; control the second valve port of the multi-way valve to connect with the fifth valve port, the sixth valve port to connect with the ninth valve port, and the tenth valve port to connect with the first valve port; and control the first port of the three-way valve to connect with the third port, and control the first port and the second port to close.

[0147] The fifth operating mode is an air source heat pump and electric drive heating battery mode, where the ECP heats the passenger compartment and the electric drive and control system is connected in series with the battery system to heat the battery system.

[0148] In the fifth operating mode, the refrigerant circuit is as follows: Figure 12 As shown, the first and fourth valves are open, and the second and third valves are closed. The refrigerant circuit consists of a compressor, a first condenser, a liquid receiver, a first electronic expansion valve, an evaporator, a third electronic expansion valve, a third check valve, a second heat exchanger, a first valve, and a first check valve, forming a refrigerant circulation, as well as refrigerant pipelines forming a refrigerant circulation.

[0149] In actual operation, the compressor ECP works, turning into high-pressure, high-temperature refrigerant. The water-cooled condenser WCDS dissipates heat, SOV1 and SOV4 are turned on, and SOV2 and SOV3 are turned off. The refrigerant is preheated by the EXV1+ evaporator, and expands by the electronic expansion valve EXV3. The low-temperature refrigerant evaporates in the outdoor heat exchanger OHX, absorbing heat from the air. After being heated by the plate coaxial tube IHX, it returns to the compressor ECP.

[0150] In the fifth operating mode, the coolant circuit is as follows: Figure 13 As shown, the tenth valve port of the multi-way valve is connected to the first valve port, the second valve port is connected to the fifth valve port, and the sixth valve port is connected to the ninth valve port. At this time, the electric drive circuit, the battery circuit, and the second refrigeration component are connected in series. The first and third ports of the three-way valve are open, the second port is closed, and the heating circuit works independently.

[0151] During actual operation, the multi-way valves (2 / 5, 6 / 9, 10 / 1) are connected, and the electric water pump WP1 and the battery water pump WP3 work to send coolant to the electric drive and control system. The hot water heated by the electric drive and control system flows into the battery pack to heat the battery. The proportional three-way valve AC is connected (AB is closed), and the heater pump WP2 works. The coolant transfers heat from the refrigerant side to the heater core (if the water temperature at the WCDS outlet is insufficient, the water PTC is energized to heat it) through the WCDS to heat the air that has been preheated by the evaporator.

[0152] Optionally, in some embodiments, when the current working mode is the sixth working mode, the control component 300 is further configured to: control the first valve and the fourth valve to open, the second valve and the third valve to close, control the second valve port of the multi-way valve to connect with the ninth valve port, the tenth valve port to connect with the first valve port, the eighth valve port to connect with the fifth valve port, the sixth valve port to connect with the seventh valve port, and control the first port and the third port of the three-way valve to open according to a first preset ratio.

[0153] The sixth operating mode is an air source heat pump heating and battery (PTC supplemental heating) and electric drive temperature equalization self-circulation mode, which requires ECP + water PTC to heat the passenger compartment and the battery pack, and the electric drive and electronic control system to equalize the temperature and self-circulate.

[0154] In the sixth operating mode, the refrigerant circuit is as follows: Figure 14 As shown, the first and fourth valve ports are open, and the second and third valve ports are closed. The refrigerant circuit consists of a compressor, a first condenser, a liquid receiver, a first electronic expansion valve, an evaporator, a third electronic expansion valve, a third check valve, a second heat exchanger, a first valve, and a first check valve, forming a refrigerant circulation, as well as refrigerant pipelines forming a refrigerant circulation.

[0155] In actual operation, the compressor ECP works, turning into high-pressure, high-temperature refrigerant. The water-cooled condenser WCDS dissipates heat, SOV1 and SOV4 are turned on, and SOV2 and SOV3 are turned off. The refrigerant is preheated by the EXV1+ evaporator, and expands by the electronic expansion valve EXV3. The low-temperature refrigerant evaporates in the outdoor heat exchanger OHX, absorbing heat from the air. After being heated by the plate coaxial tube IHX, it returns to the compressor ECP.

[0156] In the sixth operating mode, the coolant circuit is as follows: Figure 15 As shown, the tenth valve port of the multi-way valve is connected to the first valve port, and the second valve port is connected to the ninth valve port, which is connected in series with the second refrigeration component and the electric drive branch; the eighth valve port is connected to the fifth valve port, and the sixth valve port is connected to the seventh valve port; the first port and the third port of the three-way valve, the first port and the second port are opened simultaneously in proportion; the heating branch is connected to the battery branch.

[0157] In actual operation, when the multi-way valves (2 / 9, 10 / 1) are connected, the electric water pump WP1 operates, sending coolant to the electric drive and control system and the chiller, forming a uniform temperature circulation within the electric drive and control system and storing heat; when the multi-way valves (8 / 5, 6 / 7) are connected, the proportional three-way valves AC and AB open simultaneously according to proportional requirements, the battery water pump WP3 and the heater water pump WP2 operate, and the coolant transfers heat from the refrigerant side to the heater core (if the water temperature at the WCDS outlet is insufficient, the water PTC is powered on to heat it) through the WCDS to heat the air preheated by the evaporator. The hot coolant after the heater core absorbs heat passes through the proportional three-way valve AB port and mixes with the coolant from the battery outlet through the pipeline GF, entering the battery pack to heat the battery.

[0158] Optionally, in some embodiments, when the current operating mode is the seventh operating mode, the control component 300 is further configured to: control the first valve and the fourth valve to open, and control the second valve and the third valve to close, and control the second electronic expansion valve to close; control the second valve port of the multi-way valve to connect with the ninth valve port, control the tenth valve port to connect with the first valve port, control the eighth valve port to connect with the fifth valve port, control the sixth valve port to connect with the seventh valve port, and control the first port of the three-way valve to connect with the third port, and control the first port and the second port to close.

[0159] The seventh operating mode is an air source heat pump + PTC, battery temperature equalization self-circulation, and electric drive temperature equalization self-circulation mode. ECP + water PTC provides heating for the passenger compartment, battery pack temperature equalization self-circulation, and electric drive and electronic control system temperature equalization self-circulation.

[0160] In the seventh mode, the refrigerant circuit is as follows: Figure 16 As shown, the first and fourth valve ports are open, the second and third valve ports are closed, the second electronic expansion valve is closed, and the refrigerant circuit consists of a compressor, a first condenser, a liquid receiver, a first electronic expansion valve, an evaporator, a third electronic expansion valve, a third check valve, a second heat exchanger, a first valve, and a first check valve, forming a refrigerant circulation, as well as refrigerant pipelines forming a refrigerant circulation.

[0161] In actual operation, the compressor ECP works, turning into high-pressure, high-temperature refrigerant. The water-cooled condenser WCDS dissipates heat, SOV1 and SOV4 are turned on, and SOV2 and SOV3 are turned off. The refrigerant is preheated by the EXV1+ evaporator, and expands by the electronic expansion valve EXV3. The low-temperature refrigerant evaporates in the outdoor heat exchanger OHX, absorbing heat from the air. After being heated by the plate coaxial tube IHX, it returns to the compressor ECP.

[0162] In the seventh mode, the coolant circuit is as follows: Figure 17As shown, the tenth valve port of the multi-way valve is connected to the first valve port, the second valve port is connected to the ninth valve port, and the electric drive branch is connected in series with the second refrigeration unit; the eighth valve port is connected to the fifth valve port, the sixth valve port is connected to the seventh valve port, and the battery performs temperature equalization and self-circulation; the first port of the three-way valve is connected to the third port, the second port is closed, and the heating circuit works independently.

[0163] In actual operation, when the multi-way valves (2 / 9, 10 / 1) are connected, the electric drive water pump WP1 operates, sending coolant to the electric drive and control system and the chiller, forming a uniform temperature circulation within the electric drive and control system and storing heat; when the multi-way valves (8 / 5, 6 / 7) are connected, the proportional three-way valve AC is connected (AB is closed), the battery water pump WP3 operates, and the coolant is connected to the battery pack through the multi-way valve and pipeline GF to achieve battery uniform temperature self-circulation; when the passenger compartment has a heating requirement, the proportional three-way valve AC is connected (AB is closed), the heater water pump WP2 operates, and the coolant transfers heat from the refrigerant side through the WCDS (if the WCDS outlet water temperature is insufficient, the water PTC is energized to heat) to the heater core Heater to heat the air preheated by the evaporator.

[0164] Optionally, in some embodiments, when the current operating mode is the eighth operating mode, the control component 300 is further configured to: control the first valve and the fourth valve to open, control the second valve and the third valve to close, and control the second electronic expansion valve to open; control the second valve port of the multi-way valve to connect with the ninth valve port, control the tenth valve port to connect with the first valve port, control the eighth valve port to connect with the fifth valve port, control the sixth valve port to connect with the seventh valve port, and control the first port of the three-way valve to connect with the third port, and control the first port and the second port to close.

[0165] Among them, the eighth working mode is a dual heat source (air source + water source) heat pump + PTC, battery temperature equalization self-circulation mode, which requires ECP + water PTC to heat the crew cabin and battery pack temperature equalization self-circulation.

[0166] In the eighth operating mode, the refrigerant circuit is as follows: Figure 18 As shown, the first and fourth valve ports are open, the second and third valve ports are closed, the second electronic expansion valve is open, and the refrigerant circuit consists of a compressor, a first condenser, a liquid receiver, a second electronic expansion valve + a first refrigeration unit / a first electronic expansion valve + an evaporator, a third electronic expansion valve, a third check valve, a second heat exchanger, a first valve, and a first check valve, forming a refrigerant circulation, as well as refrigerant piping.

[0167] In actual operation, the compressor ECP works, turning into high-pressure, high-temperature refrigerant. The refrigerant dissipates heat through the water-cooled condenser WCDS. SOV1 and SOV4 are turned on, while SOV2 and SOV3 are turned off. The refrigerant absorbs heat through the evaporation of EXV2 + Chiller and (EXV1 + evaporator preheating) EXV3 + OHX. The refrigerant after evaporation is heated through the plate coaxial tube IHX and then returns to the compressor ECP.

[0168] In the eighth operating mode, the coolant circuit is as follows: Figure 19 As shown, the tenth valve port of the multi-way valve is connected to the first valve port, the second valve port is connected to the ninth valve port, and the electric drive branch is connected in series with the second refrigeration unit; the eighth valve port is connected to the fifth valve port, the sixth valve port is connected to the seventh valve port, and the battery performs temperature equalization and self-circulation; the first port of the three-way valve is connected to the third port, the second port is closed, and the heating circuit works independently.

[0169] In actual operation, when the multi-way valves (2 / 9, 10 / 1) are connected, the electric water pump WP1 operates, sending coolant to the electric drive and control system and the chiller, where the chiller absorbs the heat generated by the electric drive and control system. When the multi-way valves (8 / 5, 6 / 7) are connected, the proportional three-way valve AC is connected (AB is closed), the battery water pump WP3 operates, and the coolant is connected to the battery pack through the multi-way valves and pipeline GF to achieve battery temperature equalization and self-circulation. When the passenger compartment requires heating, the proportional three-way valve AC is connected (AB is closed), the heater pump WP2 operates, and the coolant transfers heat from the refrigerant side through the WCDS (if the WCDS outlet water temperature is insufficient, the water PTC is energized to heat the water) to the heater core Heater to heat the air preheated by the evaporator.

[0170] Optionally, in some embodiments, when the current operating mode is the ninth operating mode, the control component 300 is further configured to: control the third valve to open, and the first valve, the second valve, and the fourth valve to close; control the second valve port of the multi-way valve to connect with the ninth valve port, control the tenth valve port to connect with the first valve port, control the eighth valve port to connect with the fifth valve port, control the sixth valve port to connect with the seventh valve port, and control the first port of the three-way valve to connect with the third port, and control the first port and the second port to close.

[0171] Among them, the ninth working mode is OHX defrosting, water source heat pump, and battery temperature equalization self-circulation mode: it requires ECP to defrost the outdoor heat exchanger OHX and heat the crew cabin, and the battery pack temperature equalization self-circulation.

[0172] In the ninth operating mode, the refrigerant circuit is as follows: Figure 20 As shown, the third valve port is open, and the first, second, and third valve ports are closed. The refrigerant circuit consists of a compressor, a first condenser, a third valve port, a heat exchanger, a second check valve, a liquid receiver, a first heat exchanger, a first refrigeration unit, and refrigerant piping, forming a refrigerant circulation system.

[0173] In actual operation, the compressor ECP works, turning into high-pressure, high-temperature refrigerant. The refrigerant dissipates heat through the water-cooled condenser WCDS and the outdoor heat exchanger OHX. SOV3 is turned on, while SOV1 / SOV2 / SOV4 are turned off. The refrigerant absorbs heat through the evaporation of EXV2+Chiller. After evaporation, the refrigerant is heated through the plate coaxial tube IHX and then returns to the compressor ECP.

[0174] In the ninth operating mode, the coolant circuit is as follows: Figure 21 As shown, the tenth valve port of the multi-way valve is connected to the first valve port, the second valve port is connected to the ninth valve port, and the electric drive branch is connected in series with the second refrigeration unit; the eighth valve port is connected to the fifth valve port, the sixth valve port is connected to the seventh valve port, and the battery performs temperature equalization and self-circulation; the first port of the three-way valve is connected to the third port, the second port is closed, and the heating circuit works independently.

[0175] In actual operation, when the multi-way valves (2 / 9, 10 / 1) are connected, the electric water pump WP1 operates, sending coolant to the electric drive and control system and the chiller, where the chiller absorbs the heat generated by the electric drive and control system. When the multi-way valves (8 / 5, 6 / 7) are connected, the proportional three-way valve AC is connected (AB is closed), the battery water pump WP3 operates, and the coolant is connected to the battery pack through the multi-way valves and pipeline GF to achieve battery temperature equalization and self-circulation. When the passenger compartment requires heating, the proportional three-way valve AC is connected (AB is closed), the heater pump WP2 operates, and the coolant transfers heat from the refrigerant side to the heater core (if the water temperature at the WCDS outlet is insufficient, the water PTC is energized to heat it) through the WCDS to heat the air passing through the evaporator.

[0176] Optionally, in some embodiments, when the current operating mode is the tenth operating mode, the control component 300 is further configured to: control the fourth valve to open, the first valve, the second valve and the third valve to close, control the second valve port of the multi-way valve to connect with the ninth valve port, control the tenth valve port to connect with the first valve port, the eighth valve port to connect with the fifth valve port, the sixth valve port to connect with the seventh valve port, and control the first port of the three-way valve to connect with the third port, and control the first port and the second port to close.

[0177] Among them, the tenth working mode is the water source heat pump + PTC and battery temperature equalization self-circulation mode, which requires ECP + water PTC to heat the passenger compartment, the electric drive electric system to release heat to the passenger compartment, and the battery pack temperature equalization self-circulation.

[0178] In the tenth operating mode, the refrigerant circuit is as follows: Figure 22 As shown, the fourth valve port is open, and the first, second, and third valve ports are closed. The refrigerant circuit consists of a compressor, a first condenser, a fourth valve port, a liquid receiver, a second electronic expansion valve, a first refrigeration unit, and refrigerant piping, forming a refrigerant circulation system.

[0179] In actual operation, the compressor ECP works, turning into high-pressure, high-temperature refrigerant. The refrigerant dissipates heat through the water-cooled condenser WCDS, SOV4 is turned on, and SOV1 / SOV2 / SOV3 are turned off. The refrigerant absorbs heat through the evaporation of EXV2+Chiller. After evaporation, the refrigerant is heated through the plate coaxial tube IHX and then returns to the compressor ECP.

[0180] In the tenth operating mode, the coolant circuit is as follows: Figure 23 As shown, the tenth valve port of the multi-way valve is connected to the first valve port, the second valve port is connected to the ninth valve port, and the electric drive branch is connected in series with the second refrigeration unit; the eighth valve port is connected to the fifth valve port, the sixth valve port is connected to the seventh valve port, and the battery performs temperature equalization and self-circulation; the first port of the three-way valve is connected to the third port, the second port is closed, and the heating circuit works independently.

[0181] In actual operation, when the multi-way valves (2 / 9, 10 / 1) are connected, the electric water pump WP1 operates, sending coolant to the electric drive and control system and the chiller, where the chiller absorbs the heat generated by the electric drive and control system. When the multi-way valves (8 / 5, 6 / 7) are connected, the proportional three-way valve AC is connected (AB is closed), the battery water pump WP3 operates, and the coolant is connected to the battery pack through the multi-way valves and pipeline GF to achieve battery temperature equalization and self-circulation. When the passenger compartment requires heating, the proportional three-way valve AC is connected (AB is closed), the heater pump WP2 operates, and the coolant transfers heat from the refrigerant side to the heater core (if the WCDS outlet water temperature is insufficient, the water PTC is energized to heat it) through the WCDS to heat the air passing through the evaporator.

[0182] Optionally, in some embodiments, when the current working mode is the eleventh working mode, the control component 300 is further configured to: control the fourth valve to open, the first valve, the second valve and the third valve to close, control the second valve port of the multi-way valve to connect with the ninth valve port, control the tenth valve port to connect with the first valve port, the eighth valve port to connect with the fifth valve port, the sixth valve port to connect with the seventh valve port, and control the first port and the third port of the three-way valve to open according to a first preset ratio.

[0183] Among them, the eleventh working mode is the water source heat pump + PTC supplementary battery mode, which requires ECP + water PTC to heat the crew cabin, the electric drive and control system to release heat to the Chiller, and the heat from the electric drive and control system + the heat from the PTC to heat the crew cabin and battery pack.

[0184] In the eleventh operating mode, the refrigerant circuit is as follows: Figure 24As shown, the fourth valve port is open, and the first, second, and third valve ports are closed. The refrigerant circuit consists of a compressor, a first condenser, a fourth valve port, a liquid receiver, a second electronic expansion valve, a first refrigeration unit, and refrigerant piping, forming a refrigerant circulation system.

[0185] In actual operation, the compressor ECP works, turning into high-pressure, high-temperature refrigerant. The refrigerant dissipates heat through the water-cooled condenser WCDS, SOV4 is turned on, and SOV1 / SOV2 / SOV3 are turned off. The refrigerant absorbs heat through the evaporation of EXV2+Chiller. After evaporation, the refrigerant is heated through the plate coaxial tube IHX and then returns to the compressor ECP.

[0186] In the eleventh operating mode, the coolant circuit is as follows: Figure 25 As shown, the tenth valve port of the multi-way valve is connected to the first valve port, the second valve port is connected to the ninth valve port, and the electric drive branch is connected in series with the second refrigeration component; the eighth valve port is connected to the fifth valve port, the sixth valve port is connected to the seventh valve port, the first port and the third port of the three-way valve are opened simultaneously in proportion, and the heating circuit is connected to the battery circuit.

[0187] In actual operation, the multi-way valves (2 / 9, 10 / 1) are connected, and the electric water pump WP1 operates, sending coolant to the electric drive and control system and the chiller. The chiller absorbs the heat generated by the electric drive and control system. The multi-way valves (8 / 5, 6 / 7) are connected, and the proportional three-way valves AC and AB open simultaneously according to proportional requirements. The battery water pump WP3 and the heater water pump WP2 operate. The coolant transfers heat from the refrigerant side to the heater core (if the water temperature at the WCDS outlet is insufficient, the water PTC is powered on to heat it) through the WCDS to heat the air after it passes through the evaporator. The heated coolant after the heater core absorbs heat passes through the proportional three-way valve AB port and mixes with the battery outlet coolant through the pipeline GF, entering the battery pack to heat the battery.

[0188] Optionally, in some embodiments, when the current operating mode is the twelfth operating mode, the control component 300 is further configured to: control the second valve and the fourth valve to open, the first valve and the third valve to close, control the tenth valve port of the multi-way valve to connect with the first valve port, the second valve port to connect with the fourth valve port, the third valve port to connect with the fifth valve port, the sixth valve port to connect with the ninth valve port, and control the first port of the three-way valve to connect with the third port, and control the first port and the second port to close.

[0189] The twelfth operating mode is a water source heat pump dehumidification and battery slow cooling mode, which requires the ECP to dehumidify and heat the passenger compartment, and the battery and electric drive and control system to dissipate heat to the outside through the Chiller low temperature radiator (LTR).

[0190] In the twelfth operating mode, the refrigerant circuit is as follows: Figure 26As shown, the second and fourth valve ports are open, while the first and third valve ports are closed. The refrigerant circuit consists of a compressor, a first condenser, a fourth valve port, a liquid receiver, a second electronic expansion valve + a first refrigeration unit / first electronic expansion valve, an evaporator, and a second valve port. The refrigerant piping forms the refrigerant circulation system.

[0191] In actual operation, the compressor ECP works, turning into high-pressure and high-temperature refrigerant. The refrigerant dissipates heat through the water-cooled condenser WCDS, SOV2 and SOV4 are turned on, and SOV1 and SOV3 are turned off. The refrigerant absorbs heat through the EXV1+ evaporator and EXV2+ Chiller. After evaporation, the refrigerant is heated through the plate coaxial tube IHX and then returns to the compressor ECP.

[0192] In the twelfth operating mode, the coolant circuit is as follows: Figure 27 As shown, the multi-way valve's tenth port is connected to the first port, the second port to the fourth port, and the third port to the fifth port. The electric drive branch is connected to the heat sink, the battery branch, and the second refrigeration component. The three-way valve's first and third ports are open, and the second port is closed, allowing the heating circuit to operate independently.

[0193] During actual operation, the multi-way valves (10 / 1, 2 / 4, 3 / 5, 6 / 9) are connected, and the electric water pump WP1 and the battery water pump WP3 work to deliver coolant to the electric drive and control system, battery pack, chiller, and LTR. The chiller and LTR absorb the heat generated by the battery and the electric drive and control system for heat dissipation. The proportional three-way valve AC is open (AB is closed), and the heater pump WP2 works. The coolant transfers heat from the refrigerant side to the heater core (if the water temperature at the WCDS outlet is insufficient, the water PTC is energized to heat it) through the WCDS to heat the cold air after passing through the evaporator.

[0194] Optionally, in some embodiments, when the current operating mode is the thirteenth operating mode, the control component 300 is further configured to: control the first thermal management unit to be in a stopped operating state, and control the tenth valve port of the multi-way valve to be connected to the first valve port, the second valve port to be connected to the third valve port, the fourth valve port to be connected to the fifth valve port, the sixth valve port to be connected to the seventh valve port, and the eighth valve port to be connected to the ninth valve port.

[0195] The thirteenth operating mode is the low-temperature radiator (LTR) defrosting and crew cabin heating mode, which requires water-based PTC to heat the crew cabin and defrost the low-temperature radiator (LTR).

[0196] In the thirteenth operating mode, the refrigerant circuit stops working, and the coolant circuit... Figure 28As shown, the tenth valve port of the multi-way valve is connected to the first valve port, the second valve port is connected to the third valve port, the fourth valve port is connected to the fifth valve port, the sixth valve port is connected to the seventh valve port, and the eighth valve port is connected to the ninth valve port. The electric drive branch is connected to the heat sink, the battery branch, the heating circuit, and the second refrigeration component.

[0197] In actual operation, the multi-way valves (10 / 1, 2 / 3, 4 / 5, 6 / 7, 8 / 9) are connected, and the electric water pump WP1, the warm air water pump WP2, and the battery water pump WP3 work simultaneously to send the PTC-heated coolant to the HVAC warm air core, chiller, electric drive and control system, LTR, and battery pack, thereby achieving cabin heating and LTR defrosting.

[0198] In summary, the thermal management system of this application embodiment can utilize the heat provided by air source heat pumps, water source heat pumps, and PTC to meet the needs of the entire vehicle; by using superheat control and a gas-free design, flow resistance is reduced, energy consumption for cooling and heating is reduced, and driving range is increased; by using the evaporator for secondary condensation preheating, the heat exchange efficiency of the system is improved, heating energy consumption is reduced, and driving range is increased; by eliminating the liquid heat exchanger PHX, the number of components is reduced, costs are lowered, and battery heating efficiency is also improved, reducing energy consumption.

[0199] The thermal management system proposed in this application involves a first thermal management unit that heats the passenger compartment or cools it using refrigerant, and a second thermal management unit that uses coolant to manage the thermal performance of the passenger compartment, and / or the battery pack, and / or the electric drive system. A control component controls the first and second switching units to their respective on / off states according to the current operating mode of the thermal management system, thus enabling thermal management through both units. This solves the problems of low battery heat utilization efficiency and redundant vehicle structure in related technologies, reducing redundant structures, lowering costs and energy consumption, improving battery heating efficiency, and increasing the vehicle's pure electric range.

[0200] This application also provides a vehicle, including: a thermal management system as described above.

[0201] This application embodiment also provides a thermal management method, employing the thermal management system as described above, wherein the thermal management method is as follows: Figure 29 As shown, it includes the following steps:

[0202] In step S2901, the current operating mode of the thermal management system is obtained.

[0203] In step S2902, the first target switching state of the first switching unit and the second target switching state of the second switching unit are determined according to the current operating mode.

[0204] In step S2903, multiple switches of the first switching unit are controlled to be in the corresponding switching state according to the first target switching state, and multiple switches of the second switching unit are controlled to be in the corresponding switching state according to the second target switching state, so as to perform thermal management through the first thermal management unit and the second thermal management unit.

[0205] It should be noted that the foregoing explanation of the thermal management system embodiment also applies to the thermal management method of this embodiment, and will not be repeated here.

[0206] According to the method proposed in this application, the current operating mode of the thermal management system is obtained, and a first target switching state of the first switching unit and a second target switching state of the second switching unit are determined based on the current operating mode. Multiple switches of the first switching unit are controlled to be in corresponding switching states based on the first target switching state, and multiple switches of the second switching unit are controlled to be in corresponding switching states based on the second target switching state, thereby performing thermal management through the first and second thermal management units. This solves the problem of low battery heat utilization efficiency in related technologies, enables thermal management under different operating modes, reduces costs and energy consumption, improves battery heating efficiency, and increases the pure electric range of the vehicle.

[0207] In the description of this specification, the references to terms such as "one embodiment," "some embodiments," "example," "specific example," or "some examples," etc., indicate that a specific feature, structure, material, or characteristic described in connection with that embodiment or example is included in at least one embodiment or example of this application. In this specification, the illustrative expressions of the above terms do not necessarily refer to the same embodiment or example. Furthermore, the specific features, structures, materials, or characteristics described may be combined in any suitable manner in one or more embodiments or examples. Moreover, without contradiction, those skilled in the art can combine and integrate the different embodiments or examples described in this specification, as well as the features of different embodiments or examples.

[0208] Furthermore, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include at least one of that feature. In the description of this application, "N" means at least two, such as two, three, etc., unless otherwise explicitly specified.

[0209] Any process or method described in the flowchart or otherwise herein can be understood as representing a module, segment, or portion of code comprising one or more N executable instructions for implementing custom logic functions or processes, and the scope of the preferred embodiments of this application includes additional implementations in which functions may be performed not in the order shown or discussed, including substantially simultaneously or in reverse order depending on the functions involved, as should be understood by those skilled in the art to which embodiments of this application pertain.

[0210] It should be understood that the various parts of this application can be implemented using hardware, software, firmware, or a combination thereof. In the above embodiments, the N steps or methods can be implemented using software or firmware stored in memory and executed by a suitable instruction execution system. For example, if implemented in hardware, as in another embodiment, it can be implemented using any one or a combination of the following techniques known in the art: discrete logic circuits having logic gates for implementing logical functions on data signals, application-specific integrated circuits (ASICs) having suitable combinational logic gates, programmable gate arrays (FPGAs), field-programmable gate arrays (FPGAs), etc.

[0211] Those skilled in the art will understand that all or part of the steps of the methods in the above embodiments can be implemented by a program instructing related hardware. The program can be stored in a computer-readable storage medium, and when executed, the program includes one or a combination of the steps of the method embodiments.

[0212] Although embodiments of this application have been shown and described above, it is understood that the above embodiments are exemplary and should not be construed as limiting this application. Those skilled in the art can make changes, modifications, substitutions and variations to the above embodiments within the scope of this application.

Claims

1. A thermal management system, characterized by, The application relates to a thermal management system for an electric vehicle, comprising: a first thermal management component, a second thermal management component and a control component, wherein, the first thermal management component comprises a first switching unit and a first thermal management unit, and the first thermal management unit is used for heating a passenger cabin or cooling the passenger cabin by using a refrigerant; the second thermal management component comprises a second switching unit and a second thermal management unit, and the second thermal management unit is used for performing thermal management on the passenger cabin, and / or a battery pack, and / or an electric drive system by using a coolant; the control component is connected with the first switching unit, the first thermal management unit, the second switching unit and the second thermal management unit respectively, and is used for controlling the first switching unit and the second switching unit to be in corresponding switching states according to a current working mode of the thermal management system, so as to perform thermal management by the first thermal management unit and the second thermal management unit.

2. The thermal management system of claim 1, wherein, the first switching unit comprises first to fourth valves, first to third one-way valves and first to third electronic expansion valves, and the first thermal management unit comprises a compression component, a first condensing component, a first heat exchanging component, a liquid storage component, a second heat exchanging component, a first refrigerating component, an evaporating component, wherein, an input end of the compression component is connected with a first output end of the first heat exchanging component, and an output end of the compression component is connected with an input end of the first condensing component; an output end of the first condensing component is connected with one end of the third valve and one end of the fourth valve respectively; one end of the second heat exchanging component is connected with one end of the first valve and the other end of the third valve respectively, and the other end of the second heat exchanging component is connected with an inlet of the second one-way valve and an outlet of the third one-way valve respectively; one end of the liquid storage component is connected with the other end of the fourth valve and the outlet of the second one-way valve respectively, and the other end of the liquid storage component is connected with a first input end of the first heat exchanging component; one end of the first refrigerating component is connected with one end of the second electronic expansion valve, the other end of the first refrigerating component is connected with a second input end of the first heat exchanging component, and the other end of the second electronic expansion valve is connected with a second output end of the first heat exchanging component; one end of the evaporating component is connected with one end of the first electronic expansion valve, the other end of the evaporating component is connected with one end of the third electronic expansion valve and one end of the second valve respectively, the other end of the first electronic expansion valve is connected with the second output end of the first heat exchanging component, the other end of the third electronic expansion valve is connected with the inlet of the third one-way valve, and the other end of the second valve is connected with the second input end of the first heat exchanging component.

3. The thermal management system of claim 2, wherein, the second switching unit comprises a multi-way valve and a three-way valve, and the second thermal management unit comprises an electric drive water pump, an electric drive electric control subcomponent, a heat radiating component, a battery water pump, a battery pack, a warm air water pump, a second condensing component, a heating component, a warm air component and a second refrigerating component, wherein, one end of the electric drive water pump is connected with one end of the electric drive electric control subcomponent, and the other end of the electric drive water pump is connected with a first valve port of the multi-way valve; the other end of the electric drive electric control subcomponent is connected with a second valve port of the multi-way valve; One end of the heat dissipation member is connected with the third valve port of the multi-way valve, and the other end of the heat dissipation member is connected with the fourth valve port of the multi-way valve; One end of the battery water pump is connected with the fifth valve port of the multi-way valve, and the other end of the battery water pump is connected with one end of the battery pack; The other end of the battery pack is connected with the sixth valve port of the multi-way valve; One end of the heater water pump is connected with the seventh valve port of the multi-way valve and the third port of the three-way valve respectively, and the other end of the heater water pump is connected with one end of the second condensing member; The other end of the second condensing member is connected with one end of the heating member; The other end of the heating member is connected with the warm air member; The other end of the warm air member is connected with the first port of the three-way valve, and the second port of the three-way valve is connected with the eighth valve port of the multi-way valve; One end of the second refrigeration member is connected with the ninth valve port of the multi-way valve, and the other end of the second refrigeration member is connected with the tenth valve port of the multi-way valve.

4. The thermal management system of claim 3, wherein, The working modes include first to thirteenth working modes, when the current working mode is the first working mode, the control assembly is configured to: control the second valve and the third valve to open, and the first valve and the fourth valve to close; control the sixth valve port and the ninth valve port of the multi-way valve to communicate, control the tenth valve port and the fifth valve port to communicate, control the first valve port and the third valve port to communicate, control the second valve port and the fourth valve port to communicate, control the first port and the third port of the three-way valve to communicate, and control the first port and the second port to close.

5. The thermal management system of claim 4, wherein, When the current working mode is the second working mode, the control assembly is further configured to: control the second valve and the fourth valve to open, and the first valve and the third valve to close; control the tenth valve port and the first valve port of the multi-way valve to communicate, control the second valve port and the fourth valve port to communicate, control the third valve port and the ninth valve port to communicate, control the third valve port and the fifth valve port, control the sixth valve port and the seventh valve port to communicate, control the first port and the third port of the three-way valve to communicate, and control the first port and the second port to close.

6. The thermal management system of claim 4, wherein, When the current working mode is the third working mode, the control assembly is further configured to: control the first valve and the fourth valve to open, and the second valve and the third valve to close; control the third valve port and the first valve port of the multi-way valve to communicate, control the second valve port and the fourth valve port to communicate, control the tenth valve port and the fifth valve port to communicate, control the sixth valve port and the ninth valve port to communicate, control the first port and the third port of the three-way valve to communicate, and control the first port and the second port to close.

7. The thermal management system of claim 4, wherein, When the current working mode is the fourth working mode, the control assembly is further configured to: control the second valve and the fourth valve to open, and the first valve and the third valve to close; The tenth valve port of the multi-way valve is communicated with the first valve port, the second valve port is communicated with the fourth valve port, the third valve port is communicated with the ninth valve port, the eighth valve port is communicated with the fifth valve port, the sixth valve port is communicated with the seventh valve port, the first port of the three-way valve is communicated with the third port, and the first port and the second port are closed.

8. The thermal management system of claim 4, wherein, When the current working mode is the fifth working mode, the control component is further configured to: control the first valve and the fourth valve to open, and control the second valve and the third valve to close; the second valve port of the multi-way valve is communicated with the fifth valve port, the sixth valve port is communicated with the ninth valve port, the tenth valve port is communicated with the first valve port, and the first port of the three-way valve is communicated with the third port, and the first port and the second port are closed.

9. The thermal management system of claim 4, wherein, When the current working mode is the sixth working mode, the control component is further configured to: control the first valve and the fourth valve to open, and control the second valve and the third valve to close, the second valve port of the multi-way valve is communicated with the ninth valve port, the tenth valve port is communicated with the first valve port, the eighth valve port is communicated with the fifth valve port, the sixth valve port is communicated with the seventh valve port, and the first port of the three-way valve is communicated with the third port, and the first port and the second port are opened according to a first preset ratio.

10. The thermal management system of claim 4, wherein, When the current working mode is the seventh working mode, the control component is further configured to: control the first valve and the fourth valve to open, and control the second valve and the third valve to close, and control the second electronic expansion valve to close; the second valve port of the multi-way valve is communicated with the ninth valve port, the tenth valve port is communicated with the first valve port, the eighth valve port is communicated with the fifth valve port, the sixth valve port is communicated with the seventh valve port, and the first port of the three-way valve is communicated with the third port, and the first port and the second port are closed.

11. The thermal management system of claim 4, wherein, When the current working mode is the eighth working mode, the control component is further configured to: control the first valve and the fourth valve to open, and control the second valve and the third valve to close, and control the second electronic expansion valve to open; the second valve port of the multi-way valve is communicated with the ninth valve port, the tenth valve port is communicated with the first valve port, the eighth valve port is communicated with the fifth valve port, the sixth valve port is communicated with the seventh valve port, and the first port of the three-way valve is communicated with the third port, and the first port and the second port are closed.

12. The thermal management system of claim 4, wherein, When the current working mode is the ninth working mode, the control component is further configured to: control the third valve to open, and control the first valve, the second valve and the fourth valve to close; The second port of the multi-port valve is controlled to communicate with the ninth port, the tenth port is controlled to communicate with the first port, the eighth port is controlled to communicate with the fifth port, the sixth port is controlled to communicate with the seventh port, and the first port of the three-port valve is controlled to communicate with the third port, and the first port and the second port are controlled to be closed.

13. The thermal management system of claim 4, wherein, When the current working mode is the tenth working mode, the control component is further configured to: control the fourth valve to be opened, and the first valve, the second valve, and the third valve to be closed, control the second port of the multi-port valve to communicate with the ninth port, control the tenth port to communicate with the first port, control the eighth port to communicate with the fifth port, control the sixth port to communicate with the seventh port, and control the first port of the three-port valve to communicate with the third port, and control the first port and the second port to be closed.

14. The thermal management system of claim 4, wherein, When the current working mode is the eleventh working mode, the control component is further configured to: control the fourth valve to be opened, and the first valve, the second valve, and the third valve to be closed, control the second port of the multi-port valve to communicate with the ninth port, control the tenth port to communicate with the first port, control the eighth port to communicate with the fifth port, control the sixth port to communicate with the seventh port, and control the first port of the three-port valve to communicate with the third port, and control the first port and the second port to be closed.

15. The thermal management system of claim 4, wherein, When the current working mode is the twelfth working mode, the control component is further configured to: control the second valve and the fourth valve to be opened, and the first valve and the third valve to be closed, control the tenth port of the multi-port valve to communicate with the first port, the second port to communicate with the fourth port, the third port to communicate with the fifth port, the sixth port to communicate with the ninth port, and control the first port of the three-port valve to communicate with the third port, and control the first port and the second port to be closed.

16. The thermal management system of claim 4, wherein, When the current working mode is the thirteenth working mode, the control component is further configured to: control the first thermal management unit to be in a stop working state, and control the tenth port of the multi-port valve to communicate with the first port, the second port to communicate with the third port, the fourth port to communicate with the fifth port, the sixth port to communicate with the seventh port, and the eighth port to communicate with the ninth port.

17. A vehicle characterized by comprising: comprise: The thermal management system of any one of claims 1-16.

18. A thermal management method, comprising: adopt the thermal management system of any one of claims 1-16, wherein the method comprises the following steps: acquire a current working mode of the thermal management system; determine a first target switch state of the first switch unit and a second target switch state of the second switch unit according to the current working mode; control a plurality of switches of the first switch unit to be in corresponding switch states according to the first target switch state, and control a plurality of switches of the second switch unit to be in corresponding switch states according to the second target switch state, to perform thermal management through the first thermal management unit and the second thermal management unit.

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