Vehicle thermal management system and vehicle

Abstract

The present application discloses a vehicle thermal management system and a vehicle, belonging to the field of vehicles. The present application discloses a vehicle thermal management system and a vehicle, which belongs ...

Description

Technical Field

[0001] The present application belongs to the field of vehicles, and specifically relates to a vehicle thermal management system and a vehicle. Background Art

[0002] With the development of automobile technology, new energy vehicles are becoming more and more popular with consumers for their environmental protection and low noise characteristics. However, new energy vehicles are still facing the improvement of cruising range and heating and cooling needs. The current cruising range of new energy vehicles is not much better than that of traditional fuel vehicles. In addition, in the face of different needs in winter and summer, the passenger compartment, power battery and drive motor have different heating and cooling needs. How to increase the cruising range and meet the heating and cooling needs while reducing or utilizing energy consumption is an urgent problem to be solved. In the related technology, a thermal management system is set in the new energy vehicle, but the thermal management system cannot perform good thermal management of the new energy vehicle under different working conditions. Summary of the invention

[0003] The purpose of the embodiments of the present application is to provide a vehicle thermal management system and a vehicle, which at least solves the problem that the thermal management system cannot perform good thermal management of new energy vehicles under different operating conditions.

[0004] In a first aspect, an embodiment of the present application provides a vehicle thermal management system, including:

[0005] A refrigerant system, the refrigerant system comprising a compressor, a water-cooled condenser, a first electronic expansion valve, a plate heat exchanger and a gas-liquid separator, the compressor, the water-cooled condenser, the first electronic expansion valve, the plate heat exchanger and the gas-liquid separator are sequentially connected to form a refrigerant circulation loop, and the refrigerant circulates in the refrigerant circulation loop;

[0006] A coolant system, the coolant system comprising a low-temperature radiator, a drive motor, a cold air core, a warm air core, at least one electronic water pump, a power battery, at least one three-way valve and at least one four-way valve;

[0007] Wherein, at least two of the water-cooled condenser, the low-temperature radiator, the drive motor, the cold air core, the warm air core, the electronic water pump and the power battery are connected through at least one of the three-way valves and at least one of the four-way valves to form a coolant circulation loop, and the coolant circulates in the coolant circulation loop so that the vehicle thermal management system switches between a first state, a second state, a third state and a fourth state. When the vehicle thermal management system is in the first state, the plate heat exchanger, the cold air core and the power battery are connected through at least one of the three-way valves and at least one of the four-way valves. When the vehicle thermal management system is in the second state, the electronic water pump and the water-cooled The condenser is connected through at least one of the three-way valves and at least one of the four-way valves. When the vehicle thermal management system is in the third state, the plate heat exchanger, the electronic water pump and the power battery are connected through at least one of the three-way valves and at least one of the four-way valves. When the vehicle thermal management system is in the fourth state, the plate heat exchanger and the electronic water pump are connected through at least one of the three-way valves and at least one of the four-way valves; wherein, the first state is a state in which both the passenger compartment and the power battery need to be cooled, the second state is a state in which both the passenger compartment and the power battery need to be heated, the third state is a state in which the passenger compartment needs to be heated and the power battery needs to be cooled, and the fourth state is a state in which the passenger compartment needs to be dehumidified and then heated.

[0008] Optionally, at least one electronic water pump includes a first electronic water pump and a second electronic water pump, at least one three-way valve includes a first three-way valve and a second three-way valve, and at least one four-way valve includes a first four-way valve and a second four-way valve;

[0009] The plate heat exchanger is connected to the first three-way valve, the first three-way valve is connected to the first electronic water pump, the first electronic water pump is connected to the cold air core, and the cold air core is connected to the plate heat exchanger to form a first coolant circulation loop;

[0010] The first three-way valve is connected to the first four-way valve, the first four-way valve is connected to the second electronic water pump, the first four-way valve is connected to the second three-way valve, the second electronic water pump is connected to the power battery, the power battery is connected to the second three-way valve, the second three-way valve is connected to the second four-way valve, and the second four-way valve is connected to the plate heat exchanger to form a second coolant circulation loop;

[0011] When the coolant flows in the first coolant circulation loop, the cold air core cools the passenger compartment, and when the coolant flows in the second coolant circulation loop, the coolant cools the power battery.

[0012] Optionally, at least one of the electronic water pumps further includes a third electronic water pump, and at least one of the three-way valves further includes a third three-way valve and a fourth three-way valve;

[0013] The water-cooled condenser is connected to the first four-way valve, the first four-way valve is connected to the third three-way valve, the third three-way valve is connected to the low-temperature radiator, the low-temperature radiator is connected to the third electronic water pump, the third electronic water pump is connected to the drive motor, the drive motor is connected to the second four-way valve, the second four-way valve is connected to the fourth three-way valve, and the fourth three-way valve is connected to the water-cooled condenser to form a third coolant circulation loop;

[0014] Wherein, the third electronic water pump is connected to an expansion kettle.

[0015] Optionally, the at least one electronic water pump includes a second electronic water pump and a fourth electronic water pump, the at least one three-way valve includes a second three-way valve and a fourth three-way valve, the at least one four-way valve includes a first four-way valve and a second four-way valve, and the vehicle thermal management system further includes a one-way valve;

[0016] The water-cooled condenser is connected to a fourth electronic water pump, the fourth electronic water pump is connected to the heater core, the heater core is connected to the one-way valve, and the one-way valve is connected to the water-cooled condenser to form a fourth coolant circulation loop;

[0017] The water-cooled condenser is connected to the first four-way valve, the first four-way valve is connected to the second electronic water pump, and the first four-way valve is connected to the second three-way valve, the second electronic water pump is connected to the power battery, the power battery is connected to the second three-way valve, the second three-way valve is connected to the second four-way valve, the second four-way valve is connected to the fourth three-way valve, and the fourth three-way valve is connected to the water-cooled condenser to form a fifth coolant circulation loop;

[0018] When the coolant flows in the fourth coolant circulation loop, the heater core heats the passenger compartment, and when the coolant flows in the fifth coolant circulation loop, the coolant heats the power battery.

[0019] Optionally, at least one of the electronic water pumps further includes a third electronic water pump, and at least one of the three-way valves further includes a first three-way valve and a third three-way valve;

[0020] The plate heat exchanger is connected to the first three-way valve, the first three-way valve is connected to the first four-way valve, the first four-way valve is connected to the third three-way valve, the third three-way valve is connected to the low-temperature radiator, the low-temperature radiator is connected to the third electronic water pump, the third electronic water pump is connected to the drive motor, the drive motor is connected to the second four-way valve, and the second four-way valve is connected to the plate heat exchanger to form a sixth coolant circulation loop;

[0021] Wherein, the third electronic water pump is connected to an expansion kettle.

[0022] Optionally, at least one electronic water pump includes a first electronic water pump, a second electronic water pump, and a fourth electronic water pump; at least one three-way valve includes a first three-way valve, a second three-way valve, a third three-way valve, and a fourth three-way valve; at least one four-way valve includes a first four-way valve and a second four-way valve, and the vehicle thermal management system further includes a one-way valve;

[0023] The water-cooled condenser is connected to the fourth electronic water pump, the fourth electronic water pump is connected to the heater core, the heater core is connected to the one-way valve, and the one-way valve is connected to the water-cooled condenser to form a seventh coolant circulation loop;

[0024] The plate heat exchanger is connected to the first three-way valve, the first three-way valve is connected to the first four-way valve, the first four-way valve is respectively connected to the third three-way valve, the second electronic water pump and the fourth three-way valve, the third three-way valve is connected to the low-temperature radiator, the low-temperature radiator is connected to the third electronic water pump, the third electronic water pump is connected to the drive motor, the drive motor is connected to the second four-way valve, the second four-way valve is connected to the fourth three-way valve, the second four-way valve is connected to the plate heat exchanger, the second electronic water pump is connected to the power battery, the power battery is connected to the second three-way valve, and the second three-way valve is connected to the second four-way valve to form an eighth coolant circulation loop;

[0025] When the coolant flows in the seventh coolant circulation loop, the heater core heats the passenger compartment, and when the coolant flows in the eighth coolant circulation loop, the coolant heats the power battery;

[0026] Wherein, the third electronic water pump is connected to an expansion kettle.

[0027] Optionally, the vehicle thermal management system further includes a one-way valve, the refrigerant system further includes a second electronic expansion valve, the at least one electronic water pump includes a second electronic water pump, a third electronic water pump, and a fourth electronic water pump; the at least one three-way valve includes a first three-way valve, a second three-way valve, a third three-way valve, and a fourth three-way valve; the at least one four-way valve includes a first four-way valve and a second four-way valve;

[0028] One end of the second electronic expansion valve is connected between the compressor and the water-cooled condenser, and the other end of the second electronic expansion valve is connected between the plate heat exchanger and the gas-liquid separator;

[0029] The water-cooled condenser is connected to the fourth electronic water pump, the fourth electronic water pump is connected to the heater core, the heater core is connected to the one-way valve, the one-way valve is connected to the water-cooled condenser, the plate heat exchanger is connected to the first three-way valve, the first three-way valve is connected to the first four-way valve, the first four-way valve is respectively connected to the water-cooled condenser, the third three-way valve, the second three-way valve and the second electronic water pump, the second electronic water pump is connected to the power battery, the power battery is connected to the second three-way valve, the second three-way valve is connected to the second four-way valve, the second four-way valve is respectively connected to the fourth three-way valve, the plate heat exchanger and the drive motor, the third three-way valve is connected to the third electronic water pump, the third electronic water pump is connected to the drive motor, and the fourth three-way valve is connected to the water-cooled condenser to form a ninth coolant circulation loop;

[0030] When the coolant flows in the ninth coolant circulation loop, the coolant heats the passenger compartment and the power battery.

[0031] Optionally, the vehicle thermal management system further includes a one-way valve, the at least one electronic water pump includes a second electronic water pump and a fourth electronic water pump; the at least one three-way valve includes a first three-way valve, a second three-way valve, a third three-way valve, and a fourth three-way valve; the at least one four-way valve includes a first four-way valve and a second four-way valve;

[0032] The water-cooled condenser is connected to the fourth electronic water pump, the fourth electronic water pump is connected to the heater core, the heater core is connected to the one-way valve, and the one-way valve is connected to the water-cooled condenser to form a tenth coolant circulation loop;

[0033] The plate heat exchanger is connected to the first three-way valve, the first three-way valve is connected to the first four-way valve, the first four-way valve is connected to the second electronic water pump, the second electronic water pump is connected to the power battery, the power battery is connected to the second three-way valve, the second three-way valve is connected to the second four-way valve, and the second four-way valve is connected to the plate heat exchanger to form an eleventh coolant circulation loop;

[0034] When the coolant flows in the tenth coolant circulation loop, the heater core heats the passenger compartment, and when the coolant flows in the eleventh circulation loop, the coolant cools the power battery.

[0035] Optionally, the at least one electronic water pump further includes a third electronic water pump;

[0036] The low-temperature radiator is connected to the third three-way valve, the third three-way valve is connected to the first four-way valve, the first four-way valve is connected to the fourth three-way valve, the fourth three-way valve is connected to the second four-way valve, the second four-way valve is connected to the drive motor, the drive motor is connected to the third electronic water pump, and the third electronic water pump is connected to the low-temperature radiator to form a twelfth coolant circulation loop;

[0037] Wherein, the third electronic water pump is connected to an expansion kettle.

[0038] Optionally, the vehicle thermal management system further comprises a one-way valve, the at least one electronic water pump comprises a first electronic water pump and a fourth electronic water pump; the at least one three-way valve comprises a first three-way valve;

[0039] The plate heat exchanger is connected to the first three-way valve, the first three-way valve is connected to the first electronic water pump, the first electronic water pump is connected to the cold air core, and the cold air core is connected to the plate heat exchanger to form a thirteenth coolant circulation loop;

[0040] The plate heat exchanger is connected to the fourth electronic water pump, the fourth electronic water pump is connected to the heater core, the heater core is connected to the one-way valve, and the one-way valve is connected to the plate heat exchanger to form a fourteenth coolant circulation loop;

[0041] When the coolant flows in the thirteenth coolant circulation loop, the cold air core dehumidifies the passenger compartment, and when the coolant flows in the fourteenth circulation loop, the warm air core heats the passenger compartment.

[0042] Optionally, the at least one electronic water pump further includes a third electronic water pump, the at least one three-way valve further includes a third three-way valve and a fourth three-way valve, and the at least one four-way valve includes a first four-way valve and a second four-way valve;

[0043] The low-temperature radiator is connected to the third three-way valve, the third three-way valve is connected to the first four-way valve, the first four-way valve is connected to the fourth three-way valve, the fourth three-way valve is connected to the second four-way valve, the second four-way valve is connected to the drive motor, the drive motor is connected to the third electronic water pump, and the third electronic water pump is connected to the low-temperature radiator to form a fifteenth coolant circulation loop;

[0044] Wherein, the third electronic water pump is connected to an expansion kettle.

[0045] In a second aspect, an embodiment of the present application provides a vehicle, comprising the vehicle thermal management system described in any one of the above-mentioned first aspects.

[0046] In an embodiment of the present application, during the circulation of the refrigerant in the refrigerant system, heat is exchanged with the coolant in the coolant system, so that at least two of the water-cooled condenser, the low-temperature radiator, the drive motor, the cold air core, the warm air core, the electronic water pump and the power battery are connected through at least one three-way valve and at least one four-way valve to form a coolant circulation loop. Once the coolant circulates in the coolant circulation loop, the vehicle thermal management system can be switched between a first state, a second state, a third state and a fourth state. The first state is a state in which both the passenger compartment and the power battery need to be cooled, the second state is a state in which both the passenger compartment and the power battery need to be heated, the third state is a state in which the passenger compartment needs to be heated and the battery needs to be cooled, and the fourth state is a state in which the passenger compartment needs to be dehumidified and then heated. After the vehicle thermal management system is applied in the vehicle, the vehicle thermal management system can effectively perform thermal management on the vehicle under different operating conditions. That is, in the embodiment of the present application, by connecting at least two of the water-cooled condenser, the low-temperature radiator, the drive motor, the cold air core, the warm air core, the electronic water pump and the power battery through at least one three-way valve and at least one four-way valve, a coolant circulation loop is formed, and the coolant in the coolant circulation loop can exchange heat with the refrigerant in the refrigerant system, so that the thermal management system can switch between different states under different operating conditions of the vehicle, so that the vehicle thermal management system can effectively perform thermal management on the vehicle, that is, the vehicle thermal management system provided in the embodiment of the present application can cope with various operating conditions of the vehicle, and can select appropriate operating states under various operating conditions, thereby ensuring that when the vehicle copes with various operating conditions, the vehicle thermal management system has corresponding operating states, so that the vehicle can be effectively thermally managed under various operating conditions. BRIEF DESCRIPTION OF THE DRAWINGS

[0047] Figure 1 A schematic diagram showing a thermal management system provided in an embodiment of the present application;

[0048] Figure 2 A schematic diagram showing a thermal management system provided by an embodiment of the present application in a first state;

[0049] Figure 3 A schematic diagram showing a thermal management system provided by an embodiment of the present application in a fourth state;

[0050] Figure 4 A schematic diagram showing a thermal management system provided by an embodiment of the present application in a second state;

[0051] Figure 5 A schematic diagram showing a thermal management system provided by an embodiment of the present application in a third state;

[0052] Figure 6 One of the schematic diagrams showing heating of a passenger compartment and a power battery when the ambient temperature is extremely low provided in an embodiment of the present application;

[0053] Figure 7 A second schematic diagram showing heating of a passenger compartment and a power battery when the ambient temperature is extremely low, provided in an embodiment of the present application.

[0054] Reference numerals:

[0055] 100: refrigerant system; 200: coolant system; 1: compressor; 2: water-cooled condenser; 3: first electronic expansion valve; 4: plate heat exchanger; 5: gas-liquid separator; 6: second electronic expansion valve; 7: one-way valve; 8: warm air core; 9: fourth electronic water pump; 10: fourth three-way valve; 11: third electronic water pump; 12: drive motor; 13: second four-way valve; 14: expansion kettle; 15: low-temperature radiator; 16: electronic fan; 17: third three-way valve; 18: first four-way valve; 19: first three-way valve; 20: cold air core; 21: first electronic water pump; 22: second three-way valve; 23: power battery; 24: second electronic water pump. DETAILED DESCRIPTION

[0056] The term "first" or "second" in the specification and claims of the present application may explicitly or implicitly include one or more of the features. In the description of the present application, unless otherwise specified, "at least one" means two or more. In addition, "and / or" in the specification and claims means at least one of the connected objects, and the character " / " generally means that the objects connected before and after are in an "or" relationship.

[0057] In the description of the present application, it should be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside", "clockwise", "counterclockwise", "axial", "radial", "circumferential" and the like indicate orientations or positional relationships based on the orientations or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present application and simplifying the description, and do not indicate or imply that the referred device or element must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be understood as a limitation on the present application.

[0058] In the description of this application, it should be noted that, unless otherwise clearly specified and limited, the terms "installed", "connected", and "connected" should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection, or it can be indirectly connected through an intermediate medium, or it can be the internal communication of two components. For ordinary technicians in this field, the specific meanings of the above terms in this application can be understood according to specific circumstances.

[0059] like Figures 1 to 7As shown, the vehicle thermal management system includes: a refrigerant system 100, the refrigerant system 100 includes a compressor 1, a water-cooled condenser 2, a first electronic expansion valve 3, a plate heat exchanger 4 and a gas-liquid separator 5, the compressor 1, the water-cooled condenser 2, the first electronic expansion valve 3, the plate heat exchanger 4 and the gas-liquid separator 5 are connected in sequence to form a refrigerant circulation loop, and the refrigerant circulates in the refrigerant circulation loop; a coolant system 200, the coolant system 200 includes a low-temperature radiator 15, a drive motor 12, a cold air core 20, a warm air core 8, at least one electronic water pump, a power battery 23, at least one three-way valve and at least one four-way valve; wherein, at least two of the water-cooled condenser 2, the low-temperature radiator 15, the drive motor 12, the cold air core 20, the warm air core 8, the electronic water pump and the power battery 23 are connected by at least one three-way valve and at least one four-way valve to form a coolant circulation loop. , the coolant circulates in the coolant circulation loop so that the vehicle thermal management system switches between the first state, the second state, the third state and the fourth state. When the vehicle thermal management system is in the first state, the plate heat exchanger 4, the cold air core 20 and the power battery 23 are connected through at least one three-way valve and at least one four-way valve. When the vehicle thermal management system is in the second state, the electronic water pump is connected to the water-cooled condenser 2 through at least one three-way valve and at least one four-way valve. When the vehicle thermal management system is in the third state, the plate heat exchanger 4, the electronic water pump and the power battery 23 are connected through at least one three-way valve and at least one four-way valve. When the vehicle thermal management system is in the fourth state, the plate heat exchanger 4 and the electronic water pump are connected through at least one three-way valve and at least one four-way valve. Among them, the first state is a state where both the passenger compartment and the power battery 23 need to be cooled, the second state is a state where both the passenger compartment and the power battery 23 need to be heated, the third state is a state where the passenger compartment needs to be heated and the battery needs to be cooled, and the fourth state is a state where the passenger compartment needs to be dehumidified and then heated.

[0060] Among them, the compressor 1 is a driven fluid machine that lifts low-pressure gas to high-pressure gas. It sucks low-temperature and low-pressure refrigerant from the intake pipe, compresses it by driving the piston through the motor, and discharges high-temperature and high-pressure refrigerant to the exhaust pipe to provide power for the refrigeration cycle. The electric compressor is used in the present invention. Among them, the compressor 1, as the main component of the new energy vehicle, can increase the pressure of the refrigerant and change the low-pressure gaseous refrigerant into a high-pressure liquid refrigerant. The characteristic of the refrigerant is that it can absorb the heat of the cooled object at a low temperature and transfer it to the coolant and air at a higher temperature. The water-cooled condenser 2 is also called a water-cooled condenser. The equipment that uses water as a cooling medium to condense the high-temperature and high-pressure gaseous refrigerant is called a water-cooled condenser. Since the temperature of water in nature is generally low, the condensation temperature of the water-cooled condenser is relatively low, which is more beneficial to the refrigeration capacity and economic efficiency of the compressor 1. The coolant used in the water-cooled condenser can flow through once or be recycled.

[0061] It should be noted that the refrigerant discharged from the compressor 1 needs to enter from the upper inlet of the water-cooled condenser 2, and its outlet must be at the bottom, otherwise it will cause the pressure of the refrigerant system 100 to increase, resulting in the risk of the water-cooled condenser 2 bursting. In addition, there are four ports in the water-cooled condenser 2, wherein the first port is the input port of the high-temperature and high-pressure refrigerant gas discharged from the compressor 1, the second port is the output port of the high-temperature and high-pressure refrigerant, the third port is the liquid outlet port, and the fourth port is the liquid inlet port.

[0062] In addition, in the embodiments of the present application, Figures 1 to 7 In any of the drawings, the water-cooled condenser 2 in the refrigerant system 100 and the water-cooled condenser 2 in the coolant system 200 are the same component. In order to facilitate drawing the connection relationship in the drawings, the water-cooled condenser 2 in the refrigerant system 100 and the water-cooled condenser 2 in the coolant system 200 are connected by a dotted line. Similarly, the plate heat exchanger 4 in the refrigerant system 100 and the plate heat exchanger 4 in the coolant system 200 are the same component. In order to facilitate drawing the connection relationship in the drawings, the plate heat exchanger 4 in the refrigerant system 100 and the plate heat exchanger 4 in the coolant system 200 are connected by a dotted line.

[0063] In addition, the main function of the gas-liquid separator 5 is to complete gas-liquid separation, ensure that the gaseous refrigerant enters the compressor 1, and prevent the liquid refrigerant from impacting the compressor 1 and causing damage to the compressor 1.

[0064] In addition, in the embodiment of the present application, the drive motor 12 may be an electric drive system assembly (EDS), including a front drive motor 12 and a rear drive motor 12 .

[0065] In addition, in the embodiment of the present application, the low-temperature and low-pressure gaseous refrigerant is compressed by the compressor 1 and becomes a high-temperature and high-pressure gaseous refrigerant. The gaseous refrigerant flows through the water-cooled condenser 2 to exchange heat with the coolant in the coolant circuit, transfers heat to the coolant, and becomes a medium-temperature and medium-pressure liquid refrigerant. After the throttling effect of the first electronic expansion valve 3, it becomes a low-temperature and low-pressure liquid refrigerant. The low-temperature and low-pressure liquid refrigerant exchanges heat with the coolant in the plate heat exchanger 4. The refrigerant absorbs the heat of the coolant and evaporates, becoming a low-temperature and low-pressure gaseous refrigerant. After passing through the gas-liquid separator 5, it returns to the compressor 1 and is compressed again, thereby forming a circulating flow of the refrigerant. Among them, the first electronic expansion valve 3 is an expansion valve with an adjustable opening.

[0066] In addition, in the embodiment of the present application, the refrigerant may be propane, wherein propane is a pure natural working fluid, is easy to obtain, and is cheap, thereby reducing costs. Of course, the refrigerant may also be other types, for example, the refrigerant is 1,1,1,2-tetrafluoroethane. The specific type of the refrigerant is not limited in the embodiment of the present application.

[0067] It can be seen that in the embodiment of the present application, during the circulation of the refrigerant in the refrigerant system 100, heat is exchanged with the coolant in the coolant system 200, so that at least two of the water-cooled condenser 2, the low-temperature radiator 15, the drive motor 12, the cold air core 20, the warm air core 8, the electronic water pump and the power battery 23 are connected through at least one three-way valve and at least one four-way valve to form a coolant circulation loop. Once the coolant circulates in the coolant circulation loop, the vehicle thermal management system can be switched between the first state, the second state, the third state and the fourth state. The first state is a state in which both the passenger compartment and the power battery 23 need to be cooled, the second state is a state in which both the passenger compartment and the power battery 23 need to be heated, the third state is a state in which the passenger compartment needs to be heated and the battery needs to be cooled, and the fourth state is a state in which the passenger compartment needs to be dehumidified and then heated. After the vehicle thermal management system is applied to the vehicle, the vehicle thermal management system can effectively perform thermal management on the vehicle under different operating conditions. That is, in the embodiment of the present application, by connecting at least two of the water-cooled condenser 2, the low-temperature radiator 15, the drive motor 12, the cold air core 20, the warm air core 8, the electronic water pump and the power battery 23 through at least one three-way valve and at least one four-way valve, a coolant circulation loop is formed, and the coolant in the coolant circulation loop can exchange heat with the refrigerant in the refrigerant system 100, so that the thermal management system can switch between different states under different operating conditions of the vehicle, so that the vehicle thermal management system can effectively perform thermal management on the vehicle, that is, the vehicle thermal management system provided in the embodiment of the present application can cope with various operating conditions of the vehicle, and can select appropriate operating states under various operating conditions, thereby ensuring that when the vehicle copes with various operating conditions, the vehicle thermal management system has corresponding operating states, so that the vehicle can be effectively thermally managed under various operating conditions.

[0068] In addition, in some embodiments, Figure 2As shown, at least one electronic water pump may include a first electronic water pump 21 and a second electronic water pump 24, at least one three-way valve includes a first three-way valve 19 and a second three-way valve 22, and at least one four-way valve includes a first four-way valve 18 and a second four-way valve 13; the plate heat exchanger 4 is connected to the first three-way valve 19, the first three-way valve 19 is connected to the first electronic water pump 21, the first electronic water pump 21 is connected to the cold air core 20, and the cold air core 20 is connected to the plate heat exchanger 4 to form a first coolant circulation loop; the first three-way valve 19 is connected to the first four-way valve 18, and the first three-way valve 19 is connected to the first four-way valve 18. A four-way valve 18 is connected to the second electronic water pump 24, and the first four-way valve 18 is connected to the second three-way valve 22, the second electronic water pump 24 is connected to the power battery 23, the power battery 23 is connected to the second three-way valve 22, the second three-way valve 22 is connected to the second four-way valve 13, and the second four-way valve 13 is connected to the plate heat exchanger 4 to form a second coolant circulation loop; wherein, when the coolant flows in the first coolant circulation loop, the cold air core 20 cools the passenger compartment, and when the coolant flows in the second coolant circulation loop, the coolant cools the power battery 23.

[0069] When the ambient temperature is high, if the vehicle is at a high temperature, for example, the vehicle is in a high temperature environment in summer, then the passenger compartment and battery of the vehicle need to be cooled to avoid the high temperature in the passenger compartment, which affects the experience of the passengers in the passenger compartment, and to avoid the high battery temperature, which may cause the battery to fail. That is, when the vehicle is in a high ambient temperature, the battery and the passenger compartment need to be cooled, and in the embodiment of the present application, the refrigerant in the refrigerant system 100 exchanges heat with the plate heat exchanger 4, so that the plate heat exchanger 4 can circulate the coolant through the circulation of the coolant, so that the coolant circulates, thereby cooling the cold air core 20, so that the cold air core 20 cools the passenger compartment, that is, the passenger compartment is cooled. The first three-way valve 19 may have an end a, an end b and an end c, the second three-way valve 22 may have an end a, an end b and an end c, the first four-way valve 18 may have an end d, an end e, an end f and an end g, and the second four-way valve 13 may have an end d, an end e, an end f and an end g; the plate heat exchanger 4 is connected to the end a of the first three-way valve 19, the end b of the first three-way valve 19 is connected to the first electronic water pump 21, the first electronic water pump 21 is connected to the cold air core 20, and the cold air core 20 is connected to the plate heat exchanger 4 to form a first coolant circulation loop, so that the flow path of the coolant can be the plate heat exchanger 4-the end a and the end b of the first three-way valve 19 are connected-the first electronic water pump 21-the cold air core 20-the plate heat exchanger 4, so that the cold air core 20 cools the passenger compartment. The end a and the end b of the first three-way valve 19 are connected.

[0070] In addition, the c end of the first three-way valve 19 is connected to the g end of the first four-way valve 18, the f end of the first four-way valve 18 is connected to the second electronic water pump 24, and the f end of the first four-way valve 18 is connected to the c end of the second three-way valve 22, the second electronic water pump 24 is connected to the power battery 23, the power battery 23 is connected to the b end of the second three-way valve 22, the a end of the second three-way valve 22 is connected to the g end of the second four-way valve 13, and the f end of the second four-way valve 13 is connected to the plate heat exchanger 4, forming a first coolant circulation loop, so that the flow path of the coolant can be plate heat exchanger 4-the a end and the c end of the first three-way valve 19 are connected-the second electronic water pump 24-the power battery 23-the a end and the b end of the second three-way valve 22 are connected-the g end and the f end of the second four-way valve 13 are connected-the plate heat exchanger 4, so that the coolant with a lower temperature flows through the power battery 23 to cool the power battery 23. That is, when the vehicle is in a high ambient temperature, the passenger compartment and the power battery 23 can be cooled, and the thermal management system is in the first state. In addition, the coolant can flow in the first coolant circulation loop and the second coolant circulation loop at the same time, and the passenger compartment and the battery can be cooled at the same time.

[0071] In addition, in some embodiments, Figure 2 As shown, at least one electronic water pump may further include a third electronic water pump 11, and at least one three-way valve may further include a third three-way valve 17 and a fourth three-way valve 10; the water-cooled condenser 2 is connected to the first four-way valve 18, the first four-way valve 18 is connected to the third three-way valve 17, the third three-way valve 17 is connected to the low-temperature radiator 15, the low-temperature radiator 15 is connected to the third electronic water pump 11, the third electronic water pump 11 is connected to the drive motor 12, the drive motor 12 is connected to the second four-way valve 13, the second four-way valve 13 is connected to the fourth three-way valve 10, and the fourth three-way valve 10 is connected to the water-cooled condenser 2 to form a third coolant circulation loop; wherein, the third electronic water pump 11 is connected to the expansion kettle 14.

[0072] The third three-way valve 17 may have an a end, a b end and a c end, and the fourth three-way valve 10 may have an a end, a b end and a c end. The water-cooled condenser 2 is connected to the e end of the first four-way valve 18, the d end of the first four-way valve 18 is connected to the b end of the third three-way valve 17, the a end of the third three-way valve 17 is connected to the low-temperature radiator 15, the low-temperature radiator 15 is connected to the third electronic water pump 11, the third electronic water pump 11 is connected to the drive motor 12, the drive motor 12 is connected to the e end of the second four-way valve 13, the d end of the second four-way valve 13 is connected to the b end of the fourth three-way valve 10, and the a end of the fourth three-way valve 10 is connected to the water-cooled condenser 2 to form a third cold condenser. The cooling liquid circulation loop forms a third cooling liquid circulation loop, so that the flow path of the cooling liquid can be water-cooled condenser 2-the e end and the d end of the first four-way valve 18 are connected-the a end and the b end of the third three-way valve 17 are connected-low-temperature radiator 15-the third electronic water pump 11-drive motor 12-the e end and the d end of the second four-way valve 13 are connected-the a end and the b end of the fourth three-way valve 10 are connected-water-cooled condenser 2, so that the cooling liquid circulation can dissipate heat for the drive motor 12 and avoid the problem of over-high temperature of the drive motor 12.

[0073] It should be noted that the third electronic water pump 11 is connected to an expansion kettle 14, which can balance the coolant in the third coolant circulation loop, that is, when the coolant is less, the expansion kettle 14 replenishes the coolant into the third coolant circulation loop.

[0074] In addition, the low-temperature radiator 15 may be connected to an electronic fan 16 , and when the electronic fan 16 is in operation, it may accelerate the heat dissipation of the low-temperature radiator 15 .

[0075] In addition, in some embodiments, Figure 4As shown, at least one electronic water pump may include a second electronic water pump 24 and a fourth electronic water pump 9, at least one three-way valve includes a second three-way valve 22 and a fourth three-way valve 10, at least one four-way valve includes a first four-way valve 18 and a second four-way valve 13, and the vehicle thermal management system further includes a one-way valve 7; the water-cooled condenser 2 is connected to the fourth electronic water pump 9, the fourth electronic water pump 9 is connected to the heater core 8, the heater core 8 is connected to the one-way valve 7, and the one-way valve 7 is connected to the water-cooled condenser 2 to form a fourth coolant circulation loop; the water-cooled condenser 2 is connected to the first four-way valve 18, and the first four-way valve 18 is connected to The second electronic water pump 24 is connected, and the first four-way valve 18 is connected to the second three-way valve 22, the second electronic water pump 24 is connected to the power battery 23, the power battery 23 is connected to the second three-way valve 22, the second three-way valve 22 is connected to the second four-way valve 13, the second four-way valve 13 is connected to the fourth three-way valve 10, and the fourth three-way valve 10 is connected to the water-cooled condenser 2 to form a fifth coolant circulation loop; wherein, when the coolant flows in the fourth coolant circulation loop, the heater core 8 heats the passenger compartment, and when the coolant flows in the fifth coolant circulation loop, the coolant heats the power battery 23.

[0076] When the ambient temperature is low, if the vehicle is at a low temperature, at this time, the passenger compartment and battery of the vehicle need to be heated to avoid the low temperature in the passenger compartment, which affects the experience of the passengers in the passenger compartment, and to avoid the problem that the battery temperature is low, which may cause the battery to fail. That is, when the vehicle is at a low ambient temperature, the battery and the passenger compartment need to be heated, and in the embodiment of the present application, the refrigerant in the refrigerant system 100 exchanges heat with the water-cooled condenser 2, so that the water-cooled condenser 2 can circulate the coolant through the circulation of the coolant, so that the coolant circulates, thereby heating the heater core 8, so that the heater core 8 heats the passenger compartment, that is, heats the passenger compartment. Among them, the water-cooled condenser 2 is connected to the fourth electronic water pump 9, the fourth electronic water pump 9 is connected to the heater core 8, the heater core 8 is connected to the one-way valve 7, and the one-way valve 7 is connected to the water-cooled condenser 2, so that the coolant flow path is: water-cooled condenser 2-fourth electronic water pump 9-heater core 8-one-way valve 7-water-cooled condenser 2, and the heater core 8 can heat the passenger compartment.

[0077] In addition, the water-cooled condenser 2 can be connected to the e end of the first four-way valve 18, the f end of the first four-way valve 18 is connected to the second electronic water pump 24, and the f end of the first four-way valve 18 is connected to the c end of the second three-way valve 22, the second electronic water pump 24 is connected to the power battery 23, the power battery 23 is connected to the b end of the second three-way valve 22, the a end of the second three-way valve 22 is connected to the g end of the second four-way valve 13, the d end of the second four-way valve 13 is connected to the b end of the fourth three-way valve 10, and the a end of the fourth three-way valve 10 is connected to the water-cooled condenser 2, so as to form a fifth coolant circulation loop, so that the coolant with a higher temperature flows through the power battery 23, heats the power battery 23, that is, heats the power battery 23. That is, when the vehicle is in a low ambient temperature, the passenger compartment and the power battery 23 can be heated, and the thermal management system is in the second state. In addition, the coolant can flow in the fourth coolant circulation loop and the fifth coolant circulation loop at the same time, thereby heating the passenger compartment and the battery at the same time.

[0078] In addition, in some embodiments, Figure 4 As shown, at least one electronic water pump also includes a third electronic water pump 11, and at least one three-way valve also includes a first three-way valve 19 and a third three-way valve 17; the plate heat exchanger 4 is connected to the first three-way valve 19, the first three-way valve 19 is connected to the first four-way valve 18, the first four-way valve 18 is connected to the third three-way valve 17, the third three-way valve 17 is connected to the low-temperature radiator 15, the low-temperature radiator 15 is connected to the third electronic water pump 11, the third electronic water pump 11 is connected to the drive motor 12, the drive motor 12 is connected to the second four-way valve 13, and the second four-way valve 13 is connected to the plate heat exchanger 4 to form a sixth coolant circulation loop; wherein, the third electronic water pump 11 is connected to the expansion kettle 14.

[0079] In the case of a low ambient temperature, the low-temperature radiator 15 can absorb heat from the ambient air, and then transfer the heat to the refrigerant system 100 through the plate heat exchanger 4 . Specifically, the plate heat exchanger 4 is connected to the a end of the first three-way valve 19, the c end of the first three-way valve 19 is connected to the g end of the first four-way valve 18, the d end of the first four-way valve 18 is connected to the b end of the third three-way valve 17, the a end of the third three-way valve 17 is connected to the low-temperature radiator 15, the low-temperature radiator 15 is connected to the third electronic water pump 11, the third electronic water pump 11 is connected to the drive motor 12, the drive motor 12 is connected to the e end of the second four-way valve 13, and the f end of the second four-way valve 13 is connected to the plate heat exchanger 4, so as to form a sixth coolant circulation loop, and the flow path of the coolant is: plate heat exchanger 4-the a end and the c end of the first three-way valve 19 are connected-the d end and the g end of the first four-way valve 18 are connected-the b end and the c end of the third three-way valve 17 are connected-the low-temperature radiator 15-the third electronic water pump 11-the drive motor 12-the e end and the f end of the second four-way valve 13 are connected-the plate heat exchanger 4. Thus, the heat of the ambient air absorbed by the low-temperature radiator 15 can be transferred to the drive motor 12 and the plate heat exchanger 4 after circulation, and the plate heat exchanger 4 can transfer the heat to the refrigerant system 100 to facilitate the refrigerant circulation in the refrigerant system 100.

[0080] In addition, in some embodiments, Figure 6As shown, at least one electronic water pump may include a third electronic water pump 11, a second electronic water pump 24, and a fourth electronic water pump 9; at least one three-way valve includes a first three-way valve 19, a second three-way valve 22, a third three-way valve 17, and a fourth three-way valve 10; at least one four-way valve includes a first four-way valve 18 and a second four-way valve 13, and the vehicle thermal management system also includes a one-way valve 7; the water-cooled condenser 2 is connected to the fourth electronic water pump 9, the fourth electronic water pump 9 is connected to the heater core 8, the heater core 8 is connected to the one-way valve 7, and the one-way valve 7 is connected to the water-cooled condenser 2 to form a seventh coolant circulation loop; the plate heat exchanger 4 is connected to the first three-way valve 19, the first three-way valve 19 is connected to the first four-way valve 18, and the first four-way valve 18 is connected to the third three-way valve 17, the second electronic water pump 24 and the fourth three-way valve 10, respectively. The third three-way valve 10 is connected to the low-temperature radiator 15, the low-temperature radiator 15 is connected to the third electronic water pump 11, the third electronic water pump 11 is connected to the drive motor 12, the drive motor 12 is connected to the second four-way valve 13, the second four-way valve 13 is connected to the fourth three-way valve 10, the second four-way valve 13 is connected to the plate heat exchanger 4, the second electronic water pump 24 is connected to the power battery 23, the power battery 23 is connected to the second three-way valve 22, and the second three-way valve 22 is connected to the second four-way valve 13 to form an eighth coolant circulation loop; wherein, when the coolant flows in the seventh coolant circulation loop, the heater core 8 heats the passenger compartment, and when the coolant flows in the eighth coolant circulation loop, the coolant heats the power battery 23; wherein, the third electronic water pump 11 is connected to the expansion kettle 14.

[0081] Among them, when the ambient temperature is extremely low, at this time, when the thermal management system is difficult to absorb enough heat from the air to meet the heating needs of the passenger compartment and the battery, the heat of the motor can be connected in series to the circuit, and the passenger compartment and the battery can be heated by absorbing the heat of the motor. Specifically, the water-cooled condenser 2 is connected to the fourth electronic water pump 9, the fourth electronic water pump 9 is connected to the heater core 8, the heater core 8 is connected to the one-way valve 7, and the one-way valve 7 is connected to the water-cooled condenser 2, so that the water-cooled condenser 2 can absorb heat from the refrigerant system 100, and transfer the heat to the heater core 8 through the coolant, and the heater core 8 heats the passenger compartment.

[0082] In addition, the plate heat exchanger 4 is connected to the a end of the first three-way valve 19, the c end of the first three-way valve 19 is connected to the g end of the first four-way valve 18, the d end of the first four-way valve 18 is connected to the b end of the third three-way valve 17, the f end of the first four-way valve 18 is connected to the second electronic water pump 24, the e end of the first four-way valve 18 is connected to the c end of the fourth three-way valve 10, the a end of the third three-way valve 17 is connected to the low-temperature radiator 15, the low-temperature radiator 15 is connected to the third electronic water pump 11, and the The third electronic water pump 11 is connected to the drive motor 12, the drive motor 12 is connected to the e end of the second four-way valve 13, the d end of the second four-way valve 13 is connected to the b end of the fourth three-way valve 10, the second electronic water pump 24 is connected to the power battery 23, the power battery 23 is connected to the b end of the second three-way valve 22, the a end of the second three-way valve 22 is connected to the g end of the second four-way valve 13, and the f end of the second four-way valve 13 is connected to the plate heat exchanger 4, thereby forming an eighth coolant circulation loop. Among them, the waste heat of the drive motor 12 can be utilized, and the coolant flows as follows: plate heat exchanger 4 - the a end and the c end of the first three-way valve 19 are connected - the d end and the g end of the first four-way valve 18 are connected - the a end and the b end of the third three-way valve 17 are connected - low-temperature radiator 15 - the third electronic water pump 11 - drive motor 12 - the e end and the f end of the second four-way valve 13 are connected - plate heat exchanger 4, and the coolant can flow through the power battery 23, so that the coolant heats the power battery 23 when flowing through the power battery 23.

[0083] In addition, in some embodiments, Figure 7As shown, the vehicle thermal management system also includes a one-way valve 7, the refrigerant system 100 also includes a second electronic expansion valve 6, at least one electronic water pump includes a second electronic water pump 24, a third electronic water pump 11, and a fourth electronic water pump 9; at least one three-way valve includes a first three-way valve 19, a second three-way valve 22, a third three-way valve 17, and a fourth three-way valve 10; at least one four-way valve includes a first four-way valve 18 and a second four-way valve 13; one end of the second electronic expansion valve 6 is connected between the compressor 1 and the water-cooled condenser 2, and the other end of the second electronic expansion valve 6 is connected between the plate heat exchanger 4 and the gas-liquid separator 5; the water-cooled condenser 2 is connected to the fourth electronic water pump 9, the fourth electronic water pump 9 is connected to the heater core 8, the heater core 8 is connected to the one-way valve 7, the one-way valve 7 is connected to the water-cooled condenser 2, and the plate heat exchanger 4 The first three-way valve 19 is connected to the first four-way valve 18, the first four-way valve 18 is respectively connected to the water-cooled condenser 2, the third three-way valve 17, the second three-way valve 22 and the second electronic water pump 24, the second electronic water pump 24 is connected to the power battery 23, the power battery 23 is connected to the second three-way valve 22, the second three-way valve 22 is connected to the second four-way valve 13, the second four-way valve 13 is respectively connected to the fourth three-way valve 10, the plate heat exchanger 4 and the drive motor 12, the third three-way valve 17 is connected to the third electronic water pump 11, the third electronic water pump 11 is connected to the drive motor 12, and the fourth three-way valve 10 is connected to the water-cooled condenser 2 to form a ninth coolant circulation loop; when the coolant flows in the ninth coolant circulation loop, the coolant heats the passenger compartment and the power battery 23.

[0084] Among them, when the ambient temperature is extremely low, part of the high-temperature and high-pressure gaseous refrigerant discharged by the compressor 1 can flow through the water-cooled condenser 2 and be directly used to heat the passenger compartment and the battery; the other part flows through the second electronic expansion valve 6 and enters the gas-liquid separator 5, thereby mixing and exchanging heat with the low-temperature and low-pressure refrigerant flowing through the plate heat exchanger 4, thereby increasing the refrigerant temperature and pressure at the suction port of the compressor 1, further increasing the speed of the compressor 1, and increasing the heating capacity of the system by increasing the work and heat generation of the compressor 1 to meet the heating needs of the passenger compartment and the battery. In this mode, the role of the second electronic expansion valve 6 is to distribute the refrigerant flow entering the water-cooled condenser 2 and the gas-liquid separator 5 by adjusting its own opening.

[0085] In addition, in some embodiments, Figure 5As shown, the vehicle thermal management system may further include a one-way valve 7, at least one electronic water pump includes a second electronic water pump 24 and a fourth electronic water pump 9; at least one three-way valve includes a first three-way valve 19, a second three-way valve 22, a third three-way valve 17, and a fourth three-way valve 10; at least one four-way valve includes a first four-way valve 18 and a second four-way valve 13; the water-cooled condenser 2 is connected to the fourth electronic water pump 9, the fourth electronic water pump 9 is connected to the heater core 8, the heater core 8 is connected to the one-way valve 7, and the one-way valve 7 is connected to the water-cooled condenser 2 to form a tenth coolant circulation loop; the plate heat exchanger 4 is connected to The first three-way valve 19 is connected, the first three-way valve 19 is connected to the first four-way valve 18, the first four-way valve 18 is connected to the second electronic water pump 24, the second electronic water pump 24 is connected to the power battery 23, the power battery 23 is connected to the second three-way valve 22, the second three-way valve 22 is connected to the second four-way valve 13, and the second four-way valve 13 is connected to the plate heat exchanger 4 to form an eleventh coolant circulation loop; wherein, when the coolant flows in the tenth coolant circulation loop, the heater core 8 heats the passenger compartment, and when the coolant flows in the eleventh circulation loop, the coolant cools the power battery 23.

[0086] Among them, when the ambient temperature is low, the vehicle is fast charged or continuously running at high speed, the passenger compartment needs to be heated and the battery needs to be cooled. At this time, the low-temperature and low-pressure gaseous refrigerant in the refrigerant system 100 is compressed by the compressor 1 and becomes a high-temperature and high-pressure gaseous refrigerant. The gaseous refrigerant flows through the water-cooled condenser 2 and exchanges heat with the coolant in the coolant circuit, transfers the heat to the coolant, and becomes a medium-temperature and medium-pressure liquid refrigerant. After the throttling effect of the first electronic expansion valve 3, it becomes a low-temperature and low-pressure liquid refrigerant. The electronic expansion valve is a valve with adjustable opening. The low-temperature and low-pressure liquid refrigerant exchanges heat with the coolant in the plate heat exchanger 4. The refrigerant absorbs the heat of the coolant and evaporates, becoming a low-temperature and low-pressure gaseous refrigerant. After passing through the gas-liquid separator 5, it returns to the compressor 1 and is compressed again. In this process, the water-cooled condenser 2 performs heat exchange, so that the water-cooled condenser 2 is connected to the fourth electronic water pump 9, the fourth electronic water pump 9 is connected to the heater core 8, the heater core 8 is connected to the check valve 7, and the check valve 7 is connected to the water-cooled condenser 2, thus forming a tenth coolant circulation loop. The coolant with a higher temperature increases the temperature of the heater core 8, so that the heater core 8 heats the passenger compartment. The coolant flows in the following directions: water-cooled condenser 2-fourth electronic water pump 9-heater core 8-check valve 7-water-cooled condenser 2.

[0087] In addition, the plate heat exchanger 4 is connected to the a end of the first three-way valve 19, the c end of the first three-way valve 19 is connected to the g end of the first four-way valve 18, the f end of the first four-way valve 18 is connected to the second electronic water pump 24, the second electronic water pump 24 is connected to the power battery 23, the power battery 23 is connected to the b end of the second three-way valve 22, the a end of the second three-way valve 22 is connected to the g end of the second four-way valve 13, and the f end of the second four-way valve 13 is connected to the plate heat exchanger 4, so as to form an eleventh coolant circulation loop, and the coolant flows as follows: plate heat exchanger 4-the a end and the c end of the first three-way valve 19 are connected-the g end and the f end of the first four-way valve 18 are connected-the second electronic water pump 24-the power battery 23-the a end and the b end of the second three-way valve 22 are connected-the g end and the f end of the second four-way valve 13 are connected-the plate heat exchanger 4. Therefore, when the coolant flows, the plate heat exchanger 4 absorbs the external temperature, so that the coolant temperature is relatively low, and the coolant with relatively low temperature cools the power battery 23, and the thermal management system is in the third state. In addition, the coolant can flow in the tenth coolant circulation loop and the eleventh coolant circulation loop at the same time to heat the passenger compartment and cool the battery.

[0088] In addition, in some embodiments, Figure 5 As shown, at least one electronic water pump also includes a third electronic water pump 11; the low-temperature radiator 15 is connected to the third three-way valve 17, the third three-way valve 17 is connected to the first four-way valve 18, the first four-way valve 18 is connected to the fourth three-way valve 10, the fourth three-way valve 10 is connected to the second four-way valve 13, the second four-way valve 13 is connected to the drive motor 12, the drive motor 12 is connected to the third electronic water pump 11, and the third electronic water pump 11 is connected to the low-temperature radiator 15 to form a twelfth coolant circulation loop; wherein, the third electronic water pump 11 is connected to the expansion kettle 14.

[0089] The drive motor 12 needs to dissipate heat during operation, and the heat generated by the drive motor 12 is transferred to the ambient air through the low-temperature radiator 15, so that the drive motor 12 operates in an optimal temperature range. Specifically, the low-temperature radiator 15 is connected to the a end of the third three-way valve 17, the b end of the third three-way valve 17 is connected to the d end of the first four-way valve 18, the e end of the first four-way valve 18 is connected to the c end of the fourth three-way valve 10, the b end of the fourth three-way valve 10 is connected to the d end of the second four-way valve 13, the e end of the second four-way valve 13 is connected to the drive motor 12, the drive motor 12 is connected to the third electronic water pump 11, and the third electronic water pump 11 is connected to the low-temperature radiator 15. The flow direction of the coolant is: low-temperature radiator 15 - the third electronic water pump 11 - the drive motor 12 - the e end and the d end of the second four-way valve 13 are connected - the b end and the c end of the fourth three-way valve 10 are connected - the e end and the d end of the first four-way valve 18 are connected - the b end and the c end of the third three-way valve 17 are connected - the low-temperature radiator 15, so that the coolant flows through the drive motor 12 to dissipate heat for the drive motor 12.

[0090] In addition, in some embodiments, Figure 3 The vehicle thermal management system shown also includes a one-way valve 7, at least one electronic water pump includes a first electronic water pump 21 and a fourth electronic water pump 9; at least one three-way valve includes a first three-way valve 19; the plate heat exchanger 4 is connected to the first three-way valve 19, the first three-way valve 19 is connected to the first electronic water pump 21, the first electronic water pump 21 is connected to the cold air core 20, the cold air core 20 is connected to the plate heat exchanger 4 to form a thirteenth coolant circulation loop; the plate heat exchanger 4 is connected to the fourth electronic water pump 9, the fourth electronic water pump 9 is connected to the warm air core 8, the warm air core 8 is connected to the one-way valve 7, the one-way valve 7 is connected to the plate heat exchanger 4 to form a fourteenth coolant circulation loop; wherein, when the coolant flows in the thirteenth coolant circulation loop, the cold air core 20 dehumidifies the passenger compartment, and when the coolant flows in the fourteenth circulation loop, the warm air core 8 heats the passenger compartment.

[0091] Among them, in the spring and autumn when the temperature is not high but the humidity is high, in order to meet the requirements of the comfort of the passenger compartment, the air in the passenger compartment needs to be dehumidified. Since the outlet air temperature after dehumidification is low, the air needs to be heated again, and finally the outlet air in the passenger compartment reaches a comfortable temperature. Specifically, the plate heat exchanger 4 is connected to the a end of the first three-way valve 19, the b end of the first three-way valve 19 is connected to the first electronic water pump 21, the first electronic water pump 21 is connected to the cold air core 20, and the cold air core 20 is connected to the plate heat exchanger 4, so as to form a thirteenth coolant circulation loop, and the coolant flows as follows: plate heat exchanger 4-the b end and the c end of the first three-way valve 19 are connected-the first electronic water pump 21-the cold air core 20-the plate heat exchanger 4. The air in the passenger compartment can be passed through the cold air core 20 to reduce its temperature to below the dew point temperature, and the water vapor in the air is condensed into liquid water, so as to achieve the effect of dehumidification. After that, the plate heat exchanger 4 can be connected to the fourth electronic water pump 9, the fourth electronic water pump 9 is connected to the heater core 8, the heater core 8 is connected to the one-way valve 7, and the one-way valve 7 is connected to the plate heat exchanger 4, thus forming the fourteenth coolant circulation loop, and the coolant flows as follows: water-cooled condenser 2-fourth electronic water pump 9-heater core 8-one-way valve 7-water-cooled condenser 2. The coolant absorbs the heat of the refrigerant in the water-cooled condenser 2, and transfers the heat to the heater core 8 through the fourth water pump, thereby achieving the effect of heating the passenger compartment. Thus, the thermal management system is in the fourth state. Among them, the passenger compartment can be dehumidified first, and then heated.

[0092] In addition, in some embodiments, Figure 3As shown, at least one electronic water pump also includes a third electronic water pump 11, at least one three-way valve also includes a third three-way valve 17 and a fourth three-way valve 10, and at least one four-way valve includes a first four-way valve 18 and a second four-way valve 13; the low-temperature radiator 15 is connected to the third three-way valve 17, the third three-way valve 17 is connected to the first four-way valve 18, the first four-way valve 18 is connected to the fourth three-way valve 10, the fourth three-way valve 10 is connected to the second four-way valve 13, the second four-way valve 13 is connected to the drive motor 12, the drive motor 12 is connected to the third electronic water pump 11, and the third electronic water pump 11 is connected to the low-temperature radiator 15 to form a fifteenth coolant circulation loop; wherein, the third electronic water pump 11 is connected to the expansion kettle 14.

[0093] The drive motor 12 needs to dissipate heat during operation, and the heat generated by the drive motor 12 is transferred to the ambient air through the low-temperature radiator 15, so that the drive motor 12 operates in an optimal temperature range. Specifically, the low-temperature radiator 15 is connected to the a end of the third three-way valve 17, the b end of the third three-way valve 17 is connected to the d end of the first four-way valve 18, the e end of the first four-way valve 18 is connected to the c end of the fourth three-way valve 10, the b end of the fourth three-way valve 10 is connected to the d end of the second four-way valve 13, the e end of the second four-way valve 13 is connected to the drive motor 12, the drive motor 12 is connected to the third electronic water pump 11, and the third electronic water pump 11 is connected to the low-temperature radiator 15. The flow direction of the coolant is: low-temperature radiator 15 - the third electronic water pump 11 - the drive motor 12 - the e end and the d end of the second four-way valve 13 are connected - the b end and the c end of the fourth three-way valve 10 are connected - the e end and the d end of the first four-way valve 18 are connected - the b end and the a end of the third three-way valve 17 are connected - the low-temperature radiator 15, so that the coolant flows through the drive motor 12 to dissipate heat for the drive motor 12.

[0094] It should be noted that in the embodiments of the present application, Figures 1 to 7 The water-cooled condenser 2 is the same water-cooled condenser 2, and the plate heat exchanger 4 is the same plate heat exchanger 4.

[0095] In the embodiment of the present application, during the circulation of the refrigerant in the refrigerant system 100, heat is exchanged with the coolant in the coolant system 200, so that at least two of the water-cooled condenser 2, the low-temperature radiator 15, the drive motor 12, the cold air core 20, the warm air core 8, the electronic water pump and the power battery 23 are connected through at least one three-way valve and at least one four-way valve to form a coolant circulation loop. Once the coolant circulates in the coolant circulation loop, the vehicle thermal management system can be switched between a first state, a second state, a third state and a fourth state. The first state is a state in which both the passenger compartment and the power battery 23 need to be cooled, the second state is a state in which both the passenger compartment and the power battery 23 need to be heated, the third state is a state in which the passenger compartment needs to be heated and the battery needs to be cooled, and the fourth state is a state in which the passenger compartment needs to be dehumidified and then heated. After the vehicle thermal management system is applied in the vehicle, the vehicle thermal management system can effectively perform thermal management on the vehicle under different operating conditions. That is, in the embodiment of the present application, by connecting at least two of the water-cooled condenser 2, the low-temperature radiator 15, the drive motor 12, the cold air core 20, the warm air core 8, the electronic water pump and the power battery 23 through at least one three-way valve and at least one four-way valve, a coolant circulation loop is formed, and the coolant in the coolant circulation loop can exchange heat with the refrigerant in the refrigerant system 100, so that the thermal management system can switch between different states under different operating conditions of the vehicle, so that the vehicle thermal management system can effectively perform thermal management on the vehicle, that is, the vehicle thermal management system provided in the embodiment of the present application can cope with various operating conditions of the vehicle, and can select appropriate operating states under various operating conditions, thereby ensuring that when the vehicle copes with various operating conditions, the vehicle thermal management system has corresponding operating states, so that the vehicle can be effectively thermally managed under various operating conditions.

[0096] An embodiment of the present application provides a vehicle, which includes the vehicle thermal management system in any of the above embodiments.

[0097] In the description of this specification, the description with reference to the terms "one embodiment", "some embodiments", "illustrative embodiments", "examples", "specific examples", or "some examples" means that the specific features, structures, materials or characteristics described in conjunction with the embodiment or example are included in at least one embodiment or example of the present application. In this specification, the schematic representation of the above terms does not necessarily refer to the same embodiment or example. Moreover, the specific features, structures, materials or characteristics described may be combined in any one or at least one embodiment or example in a suitable manner.

[0098] Although the embodiments of the present application have been shown and described, those skilled in the art will appreciate that various changes, modifications, substitutions and variations may be made to the embodiments without departing from the principles and spirit of the present application, and that the scope of the present application is defined by the claims and their equivalents.

Claims

1. A vehicle thermal management system, characterized in that: include: A refrigerant system, the refrigerant system comprising a compressor, a water-cooled condenser, a first electronic expansion valve, a plate heat exchanger and a gas-liquid separator, the compressor, the water-cooled condenser, the first electronic expansion valve, the plate heat exchanger and the gas-liquid separator are sequentially connected to form a refrigerant circulation loop, and the refrigerant circulates in the refrigerant circulation loop; A coolant system, the coolant system comprising a low-temperature radiator, a drive motor, a cold air core, a warm air core, at least one electronic water pump, a power battery, at least one three-way valve and at least one four-way valve; Wherein, at least two of the water-cooled condenser, the low-temperature radiator, the drive motor, the cold air core, the warm air core, the electronic water pump and the power battery are connected through at least one of the three-way valves and at least one of the four-way valves to form a coolant circulation loop, and the coolant circulates in the coolant circulation loop so that the vehicle thermal management system switches between a first state, a second state, a third state and a fourth state. When the vehicle thermal management system is in the first state, the plate heat exchanger, the cold air core and the power battery are connected through at least one of the three-way valves and at least one of the four-way valves. When the vehicle thermal management system is in the second state, the electronic water pump and the water-cooled The condenser is connected through at least one of the three-way valves and at least one of the four-way valves. When the vehicle thermal management system is in a third state, the plate heat exchanger, the electronic water pump and the power battery are connected through at least one of the three-way valves and at least one of the four-way valves. When the vehicle thermal management system is in a fourth state, the plate heat exchanger and the electronic water pump are connected through at least one of the three-way valves and at least one of the four-way valves. The first state is a state in which both the passenger compartment and the power battery need to be cooled, the second state is a state in which both the passenger compartment and the power battery need to be heated, the third state is a state in which the passenger compartment needs to be heated and the power battery needs to be cooled, and the fourth state is a state in which the passenger compartment needs to be dehumidified and then heated. The at least one electronic water pump comprises a first electronic water pump, a second electronic water pump and a fourth electronic water pump, the at least one three-way valve comprises a first three-way valve, a second three-way valve, a third three-way valve and a fourth three-way valve, and the at least one four-way valve comprises a first four-way valve and a second four-way valve; The plate heat exchanger is connected to the first three-way valve, the first three-way valve is connected to the first electronic water pump, the first electronic water pump is connected to the cold air core, and the cold air core is connected to the plate heat exchanger; The first three-way valve is connected to the first four-way valve, the first four-way valve is connected to the second electronic water pump, the first four-way valve is connected to the second three-way valve, the second electronic water pump is connected to the power battery, the power battery is connected to the second three-way valve, the second three-way valve is connected to the second four-way valve, and the second four-way valve is connected to the plate heat exchanger; The vehicle thermal management system further includes a one-way valve; The water-cooled condenser is connected to a fourth electronic water pump, the fourth electronic water pump is connected to the heater core, the heater core is connected to the one-way valve, the one-way valve is connected to the water-cooled condenser and a fourth three-way valve; The water-cooled condenser is connected to the first four-way valve, the second four-way valve is connected to the fourth three-way valve, and the fourth three-way valve is connected to the water-cooled condenser.

2. The vehicle thermal management system according to claim 1, characterized in that: The at least one electronic water pump includes a third electronic water pump; The first four-way valve is connected to the third three-way valve, the second electronic water pump and the fourth three-way valve respectively; the third three-way valve is connected to the low-temperature radiator, the low-temperature radiator is connected to the third electronic water pump, the third electronic water pump is connected to the drive motor, and the drive motor is connected to the second four-way valve; the second electronic water pump is connected to the power battery, and the power battery is connected to the second three-way valve; the second three-way valve is connected to the second four-way valve; Wherein, the third electronic water pump is connected to an expansion kettle.

3. The vehicle thermal management system according to claim 1, characterized in that: The refrigerant system further comprises a second electronic expansion valve, and the at least one electronic water pump comprises a third electronic water pump; One end of the second electronic expansion valve is connected between the compressor and the water-cooled condenser, and the other end of the second electronic expansion valve is connected between the plate heat exchanger and the gas-liquid separator; The first four-way valve is connected to the water-cooled condenser, the third three-way valve, the second three-way valve and the second electronic water pump respectively, the second four-way valve is connected to the fourth three-way valve, the plate heat exchanger and the drive motor respectively, the third three-way valve is connected to the third electronic water pump, the third electronic water pump is connected to the drive motor, and the fourth three-way valve is connected to the water-cooled condenser to form a coolant circulation loop; When the coolant flows in the coolant circulation loop, the coolant heats the passenger compartment and the power battery.

4. The vehicle thermal management system according to claim 1, characterized in that: The at least one electronic water pump further includes a third electronic water pump; The low-temperature radiator is connected to the third three-way valve, the third three-way valve is connected to the first four-way valve, the first four-way valve is connected to the fourth three-way valve, the fourth three-way valve is connected to the second four-way valve, the second four-way valve is connected to the drive motor, the drive motor is connected to the third electronic water pump, and the third electronic water pump is connected to the low-temperature radiator to form a coolant circulation loop; Wherein, the third electronic water pump is connected to an expansion kettle.

5. A vehicle, characterized in that: The vehicle comprises the vehicle thermal management system according to any one of claims 1-4.

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