Thermal management system and vehicle

Abstract

The application discloses a kind of thermal management system and vehicle, thermal management system includes water tank, four-way valve, battery cooling pipeline, motor cooling pipeline, backflow pipeline, cooling device, first air conditioner and second air conditioner, four-way valve has first valve port to fourth valve port, water tank is communicated with first valve port, the import of battery cooling pipeline is communicated with second valve port, the export of battery cooling pipeline is communicated with third valve port, the import of motor cooling pipeline is respectively communicated with second valve port and water tank, the import of backflow pipeline is communicated with the export of motor cooling pipeline, the export of backflow pipeline is communicated with water tank, the import of cooling device is communicated with the export of motor cooling pipeline, the export of cooling device is communicated with the import of battery cooling pipeline, the import of first air conditioner is respectively communicated with the export of motor cooling pipeline and fourth valve port, the export of first air conditioner is respectively communicated with the import of battery cooling pipeline and water tank, the import of second air conditioner is communicated with fourth valve port, and the export of second air conditioner is communicated with water tank.

Description

Technical Field

[0001] This invention belongs to the field of new energy vehicle technology, and in particular relates to a thermal management system and a vehicle. Background Technology

[0002] In related technologies, vehicle heating generally uses heat pump air conditioning or PTC heaters. Heat pump air conditioning systems have high thermal efficiency and have a relatively small impact on the driving range of pure electric vehicles, but their cost and development expenses are relatively high. Traditional PTC diesel heaters have low thermal efficiency and have a significant impact on driving range, but their cost and development expenses are relatively low. Moreover, the vehicle's power system generates a lot of heat during operation. If it is not dissipated in time, it will affect the efficiency of the power system and may even damage the power system components and cause danger. In related technologies, vehicles use cooling systems to dissipate the heat generated by the power system outside the vehicle, resulting in energy waste. Summary of the Invention

[0003] This invention aims to at least partially solve one of the technical problems in related technologies. To this end, embodiments of this invention propose a thermal management system that allows hot water generated in the power system to enter the air conditioner to provide a heat source, thereby reducing the temperature of the hot water in the power system and decreasing the system's energy consumption, thus mitigating the impact of heating on driving range.

[0004] A second aspect of the present invention also proposes a vehicle.

[0005] The thermal management system of this invention includes a water tank, a four-way valve, a battery cooling pipeline, a motor cooling pipeline, a return pipeline, a cooling device, a first air conditioner, and a second air conditioner. The four-way valve has a first valve port to a fourth valve port. The water tank is connected to the first valve port. The inlet of the battery cooling pipeline is connected to the second valve port, and the outlet of the battery cooling pipeline is connected to the third valve port. The inlet of the motor cooling pipeline is connected to both the second valve port and the water tank. The inlet of the return pipeline is connected to both the outlet of the motor cooling pipeline and the outlet of the return pipeline. The outlet of the return pipeline is connected to the water tank. The inlet of the cooling device is connected to both the outlet of the motor cooling pipeline and the outlet of the cooling device. The outlet of the cooling device is connected to both the inlet of the battery cooling pipeline. The inlet of the first air conditioner is connected to both the outlet of the motor cooling pipeline and the fourth valve port, and the outlet of the first air conditioner is connected to both the inlet of the battery cooling pipeline and the water tank. The inlet of the second air conditioner is connected to the fourth valve port, and the outlet of the second air conditioner is connected to the water tank.

[0006] The thermal management system of this invention absorbs and transports the heat generated by the battery and motor to the first and second air conditioners by setting up battery cooling pipes and motor cooling pipes, providing a heat source for the first and second air conditioners. While cooling the hot circulating water, it uses the heat generated by the power system to provide a heat source for the first and second air conditioners, effectively reducing the energy consumption of the system.

[0007] In some embodiments, the thermal management system further includes a heating pipe, a heater, and a first three-way valve. The four-way valve, the heating pipe, and the second air conditioner are sequentially connected. The inlet of the heating pipe is connected to the fourth valve port. The heater is connected in series with the heating pipe. The first three-way valve is connected in series with the heating pipe. The inlet of the first three-way valve is connected to the outlet of the heating pipe. The first outlet of the first three-way valve is connected to the inlet of the first air conditioner. The second outlet of the first three-way valve is connected to the inlet of the second air conditioner.

[0008] In some embodiments, the thermal management system further includes a second three-way valve, a third three-way valve, and a fourth three-way valve. The second three-way valve is connected in series with the motor cooling pipe, its inlet is connected to the outlet of the motor cooling pipe, its first outlet is connected to the inlet of the cooling device, and its second outlet is connected to the inlet of the first air conditioner. The third three-way valve is connected in series with the four-way valve, its inlet is connected to the second valve port, its first outlet is connected to the inlet of the motor cooling pipe, and its second outlet is connected to the inlet of the battery cooling pipe. The fourth three-way valve is connected in series with the first air conditioner, its inlet is connected to the outlet of the first air conditioner, its first outlet is connected to the inlet of the battery cooling pipe, and its second outlet is connected to the water tank.

[0009] In some embodiments, the cooling device includes a radiator, a condenser, and a compressor. The inlet of the radiator is connected to the second outlet of the second three-way valve, the outlet of the radiator is connected to the inlet of the battery cooling pipeline, the outlet of the condenser is connected to the inlet of the first air conditioner and the inlet of the second air conditioner, the inlet of the condenser is connected to the outlet of the compressor, and the inlet of the compressor is connected to the outlet of the first air conditioner and the outlet of the second air conditioner.

[0010] In some embodiments, the cooling device further includes a battery cooler and a solenoid valve. The battery cooler is connected in series with the battery cooling pipeline. The battery cooler has a first channel and a second channel. The first channel and the second channel are not connected to each other, but the first channel and the second channel can exchange heat. The first channel is connected in series with the battery cooling pipeline. The solenoid valve is connected in series with the second channel. The inlet of the solenoid valve is connected to the outlet of the condenser, and the outlet of the second channel is connected to the inlet of the compressor.

[0011] In some embodiments, the first air conditioner includes a first evaporator, the inlet of which is connected to the outlet of the condenser, and the outlet of which is connected to the inlet of the compressor; the second air conditioner includes a second evaporator, the inlet of which is connected to the outlet of the condenser, and the outlet of which is connected to the inlet of the compressor.

[0012] In some embodiments, the thermal management system further includes a first pump, a second pump, and a third pump, wherein the first pump is connected in series with the motor cooling pipeline, the second pump is connected in series with the battery cooling pipeline, and the third pump is connected in series with the heating pipeline.

[0013] In some embodiments, the first air conditioner includes a first heat exchanger, the inlet of which is connected to the outlet of the motor cooling pipe and the first outlet of the first three-way valve, and the outlet of the first heat exchanger is connected to the inlet of the battery cooling pipe and the water tank; the second air conditioner includes a second heat exchanger, the inlet of which is connected to the second outlet of the first three-way valve, and the outlet of the second heat exchanger is connected to the water tank.

[0014] The vehicle according to a second aspect of the present invention includes a vehicle body and a thermal management system as described in any of the above embodiments, wherein the first air conditioner and the second air conditioner are both located in the vehicle body, the first air conditioner is a front air conditioner, and the second air conditioner is a rear air conditioner.

[0015] The vehicle in this embodiment of the invention uses the above-mentioned thermal management system to transport the heat generated by the power system to the first air conditioner and the second air conditioner through circulating water. The first air conditioner and the second air conditioner use hot circulating water as a heat source to provide warmth to the vehicle body, thereby reducing the energy consumption of the vehicle due to heating and increasing the driving range. Attached Figure Description

[0016] Figure 1 This is a schematic diagram of the thermal management system according to an embodiment of the present invention.

[0017] Figure label:

[0018] Water tank 1, four-way valve 2, battery cooling pipe 3, motor cooling pipe 4, return pipe 5, cooling device 6, first air conditioner 7, second air conditioner 8, heating pipe 9, heater 10, first three-way valve 11, second three-way valve 12, third three-way valve 13, fourth three-way valve 14, radiator 15, condenser 16, compressor 17, battery cooler 18, solenoid valve 19, first evaporator 20, second evaporator 21, first pump 22, second pump 23, third pump 24, first heat exchanger 25, second heat exchanger 26. Detailed Implementation

[0019] Embodiments of the present invention are described in detail below, examples of which are illustrated in the accompanying drawings. The embodiments described below with reference to the accompanying drawings are exemplary and intended to explain the present invention, and should not be construed as limiting the present invention.

[0020] The thermal management system of the present invention is described below with reference to the accompanying drawings.

[0021] like Figure 1 As shown, the thermal management system of this embodiment includes a water tank 1, a four-way valve 2, a battery cooling pipe 3, a motor cooling pipe 4, a return pipe 5, a cooling device 6, a first air conditioner 7, and a second air conditioner 8.

[0022] Water tank 1 is used to store coolant, and four-way valve 2 has a first valve port ( Figure 1 The upper left valve port shown), the second valve port ( Figure 1 The lower left valve port shown), the third valve port ( Figure 1 The lower right valve port shown) and the fourth valve port ( Figure 1 As shown in the upper right corner valve port), when the four-way valve 2 is in the first working position, the first valve port is connected to the second valve port, and the third valve port is connected to the fourth valve port. When the four-way valve 2 is in the second working position, the first valve port is connected to the fourth valve port, and the third valve port is connected to the second valve port.

[0023] Water tank 1 is connected to the first valve port; the inlet of battery cooling pipe 3 is connected to the second valve port; the outlet of battery cooling pipe 3 is connected to the third valve port; the inlet of motor cooling pipe 4 is connected to the second valve port and water tank 1 respectively; the inlet of return pipe 5 is connected to the outlet of motor cooling pipe 4; the outlet of return pipe 5 is connected to water tank 1; the inlet of cooling device 6 is connected to the outlet of motor cooling pipe 4; the outlet of cooling device 6 is connected to the inlet of battery cooling pipe 3; the inlet of first air conditioner 7 is connected to the outlet of motor cooling pipe 4 and the fourth valve port respectively; the outlet of first air conditioner 7 is connected to the inlet of battery cooling pipe 3 and water tank 1 respectively; the inlet of second air conditioner 8 is connected to the fourth valve port; and the outlet of second air conditioner 8 is connected to water tank 1.

[0024] It should be noted that the thermal management system has a heat dissipation mode and a heat recovery mode:

[0025] In the heat dissipation mode, the coolant flows sequentially through the battery cooling pipe 3, the third valve port, the second valve port, the motor cooling pipe 4, the cooling device 6, and the battery cooling pipe 3 to complete the circulation. When the coolant flows through the battery and the motor, the coolant exchanges heat with the battery and the motor respectively. The coolant absorbs the heat from the battery and the motor, causing the coolant to heat up and the battery and the motor to cool down. When the coolant flows through the cooling device 6, the coolant exchanges heat with the air, causing the coolant to dissipate heat to the air, thus cooling down the coolant and completing the dissipation of heat from the motor and the battery to the air.

[0026] In heat recovery mode, the coolant flows sequentially through battery cooling pipe 3, third valve port, fourth valve port, second air conditioner 8, water tank 1, first valve port, second valve port, motor cooling pipe 4, first air conditioner 7, and battery cooling pipe 3 to complete the circulation. When the coolant flows through the battery, it exchanges heat with the battery, absorbing the battery's heat to raise its temperature and lower the battery's temperature. When the coolant flows through the second air conditioner 8, it exchanges heat with the air inside the second air conditioner 8, cooling the coolant and raising the air's temperature as it dissipates heat to the air. The second air conditioner 8 then blows out the hot air, completing the heating function of the second air conditioner 8. When the coolant flows through the motor, it exchanges heat with the motor, absorbing the motor's heat to raise its temperature and lower the motor's temperature. When the coolant flows through the first air conditioner 7, it exchanges heat with the air inside the first air conditioner 7, cooling the coolant and raising the air's temperature as it dissipates heat to the air. The first air conditioner 7 then blows out the hot air, completing the heating function of the first air conditioner 7.

[0027] The thermal management system of this invention absorbs and transports the heat generated by the battery and motor to the first air conditioner 7 and the second air conditioner 8 through the setting of the battery cooling pipe 3 and the motor cooling pipe 4, providing a heat source for the first air conditioner 7 and the second air conditioner 8. While cooling the hot circulating water, it uses the heat generated by the power system to provide a heat source for the first air conditioner 7 and the second air conditioner 8, effectively reducing the energy consumption of the system.

[0028] like Figure 1 As shown, in some embodiments, the thermal management system further includes a heating pipe 9, a heater 10, and a first three-way valve 11. A four-way valve 2, the heating pipe 9, and the second air conditioner 8 are sequentially connected. The inlet of the heating pipe 9 is connected to the fourth valve port. The heater 10 is connected in series with the heating pipe 9. The first three-way valve 11 is connected in series with the heating pipe 9. The inlet of the first three-way valve 11 is connected to the outlet of the heating pipe 9. The first outlet of the first three-way valve 11 is connected to the inlet of the first air conditioner 7. The second outlet of the first three-way valve 11 is connected to the inlet of the second air conditioner 8. The first three-way valve 11 is used to control the flow rate of the heating pipe 9 to the first air conditioner 7 and the second air conditioner 8, respectively.

[0029] It should be noted that the thermal management system also includes battery preheating mode, heat recovery-PTC heating mode, PTC heating mode, and defrosting mode:

[0030] In battery preheating mode, the coolant flows sequentially through water tank 1, first valve port, fourth valve port, heating pipe 9, first three-way valve 11, first air conditioner 7, battery cooling pipe 3, third valve port, second valve port, motor cooling pipe 4, return pipe 5 and water tank 1 to complete the circulation. When the coolant flows through heating pipe 9, heater 10 heats the coolant to raise its temperature. When the coolant flows through the battery, the coolant exchanges heat with the battery and dissipates heat to the battery to raise its temperature, thus completing battery preheating.

[0031] In the heat recovery-PTC heating mode, the coolant flows in two paths. In the first path, the coolant flows sequentially through battery cooling pipe 3, the third valve port, the second valve port, motor cooling pipe 4, the first air conditioner 7, and battery cooling pipe 3 to complete the circulation. When the coolant flows through the battery and motor, it exchanges heat with them respectively, absorbing heat from the battery and motor to raise its own temperature and lowering the temperature of the battery and motor. When the coolant flows through the first air conditioner 7, it exchanges heat with the air inside the first air conditioner 7, dissipating heat to the air to lower its own temperature and lower the temperature of the air conditioner. As the air temperature rises, the first air conditioner 7 blows out the hot air, completing the heating function of the first air conditioner 7. In the second circuit, the coolant flows sequentially through the water tank 1, the first valve port, the fourth valve port, the heating pipe 9, the first three-way valve 11, the second air conditioner 8, and the water tank 1 to complete the circulation. When the coolant flows through the heating pipe 9, the heater 10 heats the coolant, causing it to rise in temperature. When the coolant flows through the second air conditioner 8, it exchanges heat with the air inside the second air conditioner 8, dissipating heat from the coolant to the air, thus cooling the coolant and warming the air. The second air conditioner 8 then blows out the hot air, completing the heating function of the second air conditioner 8.

[0032] In PTC heating mode, the coolant circulates sequentially through water tank 1, heating pipe 9, first three-way valve 11, first air conditioner 7 and / or second air conditioner 8, and back to water tank 1. When the coolant flows through heating pipe 9, heater 10 heats the coolant to raise its temperature. When the coolant flows through first air conditioner 7 or second air conditioner 8, it exchanges heat with the air inside first air conditioner 7 or second air conditioner 8, cooling the air and raising its temperature. First air conditioner 7 or second air conditioner 8 blows out the hot air, thus completing the heating process for first air conditioner 7 and second air conditioner 8.

[0033] In defrost mode, the coolant circulates sequentially through water tank 1, heating pipe 9, first three-way valve 11, first air conditioner 7, and water tank 1. When the coolant flows through heating pipe 9, heater 10 heats the coolant to raise its temperature. When the coolant flows through first air conditioner 7, it exchanges heat with the air inside the first air conditioner 7, cooling the coolant and raising the temperature of the air. The first air conditioner 7 then blows out the hot air, completing the defrost process.

[0034] Therefore, in these embodiments, the thermal management system of the present invention, through the setting of heating pipe 9 and first three-way valve 11, enables the thermal management system to actively heat the coolant, and convert the heat of the coolant into the heat of the air through the first air conditioner 7 and the second air conditioner 8 and blow it out, thus completing active heating. Moreover, by controlling the flow of the heating pipe 9 to the first air conditioner 7 and the second air conditioner 8 through the first three-way valve 11, the amount of hot air from the first air conditioner 7 and the second air conditioner 8 can be adjusted, further improving the user experience.

[0035] like Figure 1 As shown, in some embodiments, the thermal management system further includes:

[0036] The second three-way valve 12 is connected in series with the motor cooling pipe 4. The inlet of the second three-way valve 12 is connected to the outlet of the motor cooling pipe 4. The first outlet of the second three-way valve 12 is connected to the inlet of the cooling device 6. The second outlet of the second three-way valve 12 is connected to the inlet of the first air conditioner 7. The second three-way valve 12 is used to control the flow direction of the coolant in the motor cooling pipe 4. When the inlet of the second three-way valve 12 is connected to the first outlet of the second three-way valve 12, the motor cooling pipe 4 is connected to the cooling device 6. When the inlet of the second three-way valve 12 is connected to the second outlet of the second three-way valve 12, the motor cooling pipe 4 is connected to the first air conditioner 7.

[0037] The third three-way valve 13 is connected in series with the four-way valve 2. The inlet of the third three-way valve 13 is connected to the second valve port. The first outlet of the third three-way valve 13 is connected to the inlet of the motor cooling pipe 4. The second outlet of the third three-way valve 13 is connected to the inlet of the battery cooling pipe 3. The third three-way valve 13 is used to control the flow direction of the coolant at the second valve port. When the inlet of the third three-way valve 13 is connected to the first outlet of the third three-way valve 13, the second valve port is connected to the motor cooling pipe 4. When the inlet of the third three-way valve 13 is connected to the second outlet of the third three-way valve 13, the second valve port is connected to the battery cooling pipe 3.

[0038] The fourth three-way valve 14 is connected in series with the first air conditioner 7. The inlet of the fourth three-way valve 14 is connected to the outlet of the first air conditioner 7. The first outlet of the fourth three-way valve 14 is connected to the inlet of the battery cooling pipe 3. The second outlet of the fourth three-way valve 14 is connected to the water tank 1. The fourth three-way valve 14 is used to control the flow direction of the coolant in the first air conditioner 7. When the inlet of the fourth three-way valve 14 is connected to the first outlet of the fourth three-way valve 14, the first air conditioner 7 is connected to the battery cooling pipe 3. When the inlet of the fourth three-way valve 14 is connected to the second outlet of the fourth three-way valve 14, the first air conditioner 7 is connected to the water tank 1.

[0039] like Figure 1 As shown, in some embodiments, the cooling device 6 includes a radiator 15, a condenser 16, and a compressor 17. The inlet of the radiator 15 is connected to the second outlet of the second three-way valve 12, and the outlet of the radiator 15 is connected to the inlet of the battery cooling pipe 3. Coolant flows inside the core of the radiator 15, and air passes outside the core of the radiator 15. The hot coolant dissipates heat to the air to cool the coolant. The outlet of the condenser 16 is connected to the inlet of the first air conditioner 7 and the inlet of the second air conditioner 8, respectively. The inlet of the condenser 16 is connected to the outlet of the compressor 17, and the inlet of the compressor 17 is connected to the outlet of the first air conditioner 7 and the outlet of the second air conditioner 8, respectively.

[0040] Thus, the thermal management system of this embodiment of the invention, through the arrangement of condenser 16 and compressor 17, compresses the gaseous refrigerant into a high-temperature and high-pressure gaseous state and sends it to condenser 16. The refrigerant in condenser 16 dissipates heat to the air and cools down. Subsequently, the refrigerant enters the first air conditioner 7 or the second air conditioner 8 and exchanges heat with the air. The refrigerant absorbs the heat from the air, causing the refrigerant to heat up and the air to cool down. The first air conditioner 7 or the second air conditioner 8 blows out the cold air, completing the cooling of the first air conditioner 7 or the second air conditioner 8.

[0041] like Figure 1 As shown, in some embodiments, the cooling device 6 further includes a battery cooler 18 and a solenoid valve 19. The battery cooler 18 is connected in series with the battery cooling pipe 3. The battery cooler 18 has a first channel (not shown) and a second channel (not shown). The first channel and the second channel are not connected to each other, but the first channel and the second channel can exchange heat. The first channel is connected in series with the battery cooling pipe 3, so that the coolant flows through the first channel. The solenoid valve 19 is connected in series with the second channel. The inlet of the solenoid valve 19 is connected to the outlet of the condenser 16, and the outlet of the second channel is connected to the inlet of the compressor 17, so that the refrigerant flows through the second channel.

[0042] It should be noted that when solenoid valve 19 is opened, the refrigerant flows through the second channel. The refrigerant in the second channel exchanges heat with the coolant in the first channel. The refrigerant in the second channel absorbs heat and rises in temperature, while the coolant in the first channel dissipates heat and cools down, further improving the cooling effect of the battery.

[0043] Therefore, the thermal management system of this embodiment of the invention, through the setting of the battery cooler 18, uses refrigerant as a cooling medium to further reduce the temperature of the coolant, thereby further improving the cooling effect on the battery.

[0044] like Figure 1 As shown, in some embodiments, the first air conditioner 7 includes a first evaporator 20. The inlet of the first evaporator 20 is connected to the outlet of the condenser 16, and the outlet of the first evaporator 20 is connected to the inlet of the compressor 17. When the refrigerant flows through the first evaporator 20, the refrigerant evaporates and absorbs heat, which lowers the air temperature around the first evaporator 20. At the same time, the first air conditioner 7 blows out cold air to complete the cooling.

[0045] The second air conditioner 8 includes a second evaporator 21. The inlet of the second evaporator 21 is connected to the outlet of the condenser 16, and the outlet of the second evaporator 21 is connected to the inlet of the compressor 17. When the refrigerant flows through the second evaporator 21, the refrigerant evaporates and absorbs heat, which lowers the air temperature around the second evaporator 21. At the same time, the second air conditioner 8 blows out cold air to complete the cooling process.

[0046] like Figure 1 As shown, in some embodiments, the thermal management system further includes a first pump 22, a second pump 23, and a third pump 24. The first pump 22 is connected in series with the motor cooling pipe 4. When the first pump 22 is started, the coolant flows along the motor cooling pipe 4 under the action of the first pump 22. The second pump 23 is connected in series with the battery cooling pipe 3. When the second pump 23 is started, the coolant flows along the battery cooling pipe 3 under the action of the second pump 23. The third pump 24 is connected in series with the heating pipe 9. When the third pump 24 is started, the coolant flows along the heating pipe 9 under the action of the third pump 24.

[0047] like Figure 1 As shown, in some embodiments, the first air conditioner 7 includes a first heat exchanger 25. The inlet of the first heat exchanger 25 is connected to the outlet of the motor cooling pipe 4 and the first outlet of the first three-way valve 11, respectively. The outlet of the first heat exchanger 25 is connected to the inlet of the battery cooling pipe 3 and the water tank 1, respectively. When the coolant flows through the first heat exchanger 25, the coolant dissipates heat to the air around the first heat exchanger 25, causing the air temperature around the first heat exchanger 25 to rise. At the same time, the first air conditioner 7 blows out the hot air to complete the heating.

[0048] The second air conditioner 8 includes a second heat exchanger 26. The inlet of the second heat exchanger 26 is connected to the second outlet of the first three-way valve 11, and the outlet of the second heat exchanger 26 is connected to the water tank 1. When the coolant flows through the second heat exchanger 26, the coolant dissipates heat to the air around the second heat exchanger 26, causing the air temperature around the second heat exchanger 26 to rise. At the same time, the second air conditioner 8 blows out the hot air to complete the heating.

[0049] The vehicle according to a second aspect embodiment of the present invention includes a vehicle body (not shown) and a thermal management system according to any of the above embodiments, wherein a first air conditioner 7 and a second air conditioner 8 are both located in the vehicle body, the first air conditioner 7 is a front air conditioner, and the second air conditioner 8 is a rear air conditioner.

[0050] The vehicle in this embodiment of the invention uses the above-mentioned thermal management system to transport the heat generated by the power system to the first air conditioner 7 and the second air conditioner 8 through circulating water. The first air conditioner 7 and the second air conditioner 8 use hot circulating water as a heat source to provide warmth to the vehicle body, thereby reducing the energy consumption of the vehicle due to heating and increasing the driving range.

[0051] In the description of this invention, it should be understood that the terms "center," "longitudinal," "lateral," "length," "width," "thickness," "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," "outer," "clockwise," "counterclockwise," "axial," "radial," and "circumferential" indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are used only for the convenience of describing this invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this invention.

[0052] 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 invention, "a plurality of" means at least two, such as two, three, etc., unless otherwise explicitly specified.

[0053] In this invention, unless otherwise explicitly specified and limited, the terms "installation," "connection," "linking," and "fixing," etc., should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral part; they can refer to a mechanical connection, an electrical connection, or a connection that allows communication between them; they can refer to a direct connection or an indirect connection through an intermediate medium; they can refer to the internal communication of two components or the interaction between two components, unless otherwise explicitly limited. Those skilled in the art can understand the specific meaning of the above terms in this invention according to the specific circumstances.

[0054] In this invention, unless otherwise explicitly specified and limited, "above" or "below" the second feature can mean that the first feature is in direct contact with the second feature, or that the first feature is in indirect contact with the second feature through an intermediate medium. Furthermore, "above," "over," and "on top" of the second feature can mean that the first feature is directly above or diagonally above the second feature, or simply that the first feature is at a higher horizontal level than the second feature. "Below," "below," and "under" the second feature can mean that the first feature is directly below or diagonally below the second feature, or simply that the first feature is at a lower horizontal level than the second feature.

[0055] In this invention, the terms "one embodiment," "some embodiments," "example," "specific example," or "some examples," etc., refer to a specific feature, structure, material, or characteristic described in connection with that embodiment or example, which is included in at least one embodiment or example of the invention. 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.

[0056] Although the above embodiments have been shown and described, it is understood that the above embodiments are exemplary and should not be construed as limiting the present invention. Any changes, modifications, substitutions and variations made to the above embodiments by those skilled in the art are within the protection scope of the present invention.

Claims

1. A thermal management system, characterized in that, include: Water tank; A four-way valve, wherein the four-way valve has a first valve port to a fourth valve port, and the water tank is connected to the first valve port; A battery cooling pipe, wherein the inlet of the battery cooling pipe is connected to a second valve port, and the outlet of the battery cooling pipe is connected to a third valve port; The motor cooling pipe has its inlet connected to the second valve port and the water tank, respectively. A return pipe, the inlet of which is connected to the outlet of the motor cooling pipe, and the outlet of which is connected to the water tank; A cooling device, wherein the inlet of the cooling device is connected to the outlet of the motor cooling pipe, and the outlet of the cooling device is connected to the inlet of the battery cooling pipe; The first air conditioner has its inlet connected to the outlet of the motor cooling pipe and the fourth valve port, and its outlet connected to the inlet of the battery cooling pipe and the water tank. The second air conditioner has its inlet connected to the fourth valve port and its outlet connected to the water tank. The heating pipe, the four-way valve, and the second air conditioner are connected in sequence, and the inlet of the heating pipe is connected to the fourth valve port; A heater, wherein the heater is connected in series with the heating pipe; A first three-way valve is connected in series with the heating pipeline. The inlet of the first three-way valve is connected to the outlet of the heating pipeline. The first outlet of the first three-way valve is connected to the inlet of the first air conditioner. The second outlet of the first three-way valve is connected to the inlet of the second air conditioner. The second three-way valve is connected in series with the motor cooling pipe. The inlet of the second three-way valve is connected to the outlet of the motor cooling pipe. The first outlet of the second three-way valve is connected to the inlet of the cooling device. The second outlet of the second three-way valve is connected to the inlet of the first air conditioner. The third three-way valve is connected in series with the four-way valve. The inlet of the third three-way valve is connected to the second valve port. The first outlet of the third three-way valve is connected to the inlet of the motor cooling pipe. The second outlet of the third three-way valve is connected to the inlet of the battery cooling pipe. The fourth three-way valve is connected in series with the first air conditioner. The inlet of the fourth three-way valve is connected to the outlet of the first air conditioner, the first outlet of the fourth three-way valve is connected to the inlet of the battery cooling pipe, and the second outlet of the fourth three-way valve is connected to the water tank.

2. The thermal management system according to claim 1, characterized in that, The cooling device includes a radiator, a condenser, and a compressor. The inlet of the radiator is connected to the first outlet of the second three-way valve, the outlet of the radiator is connected to the inlet of the battery cooling pipe, the outlet of the condenser is connected to the inlet of the first air conditioner and the inlet of the second air conditioner, the inlet of the condenser is connected to the outlet of the compressor, and the inlet of the compressor is connected to the outlet of the first air conditioner and the outlet of the second air conditioner.

3. The thermal management system according to claim 2, characterized in that, The cooling device further includes a battery cooler and a solenoid valve. The battery cooler is connected in series with the battery cooling pipeline. The battery cooler has a first channel and a second channel. The first channel and the second channel are not connected to each other, but the first channel and the second channel can exchange heat. The first channel is connected in series with the battery cooling pipeline. The solenoid valve is connected in series with the second channel. The inlet of the solenoid valve is connected to the outlet of the condenser, and the outlet of the second channel is connected to the inlet of the compressor.

4. The thermal management system according to claim 2, characterized in that, The first air conditioner includes a first evaporator, the inlet of which is connected to the outlet of the condenser, and the outlet of which is connected to the inlet of the compressor; The second air conditioner includes a second evaporator, the inlet of which is connected to the outlet of the condenser, and the outlet of which is connected to the inlet of the compressor.

5. The thermal management system according to claim 1, characterized in that, Also includes: The first pump is connected in series in the motor cooling pipe; A second pump is connected in series in the battery cooling pipeline; A third pump is connected in series with the heating pipeline.

6. The thermal management system according to claim 1, characterized in that, The first air conditioner includes a first heat exchanger, the inlet of which is connected to the outlet of the motor cooling pipe and the first outlet of the first three-way valve, and the outlet of the first heat exchanger is connected to the inlet of the battery cooling pipe and the water tank. The second air conditioner includes a second heat exchanger, the inlet of which is connected to the second outlet of the first three-way valve, and the outlet of which is connected to the water tank.

7. A vehicle, characterized in that, The system includes a vehicle body and a thermal management system as described in any one of claims 1-6, wherein both the first air conditioner and the second air conditioner are located within the vehicle body, the first air conditioner being a front air conditioner and the second air conditioner being a rear air conditioner.

Images