A thermal management system for a vehicle

Abstract

The application discloses a kind of heat management systems for vehicle. The heat management system for vehicle includes compressor, water-cooled condenser, control valve, water-cooled evaporator, multi-way valve one, water pump one, water pump two, cold air core, warm air core, low temperature radiator, pipe one, multi-way valve two, pipe two, pipe three, pipe four, pipe five, pipe six, one end of pipe three is connected with multi-way valve two, the other end is connected with electric drive system, one end of electric drive system is connected with pipe three, the other end is connected with multi-way valve one through low temperature radiator and pipe one respectively, the other end of pipe five and pipe six is connected with battery, battery is connected with water pump three, the other end of cold air core is connected with multi-way valve three, multi-way valve three is also connected with pipe seven and pipe eight, the other end of pipe seven is communicated with pipe six, the other end of pipe eight is communicated with pipe four, pipe three and pipe two are communicated through pipe nine, pipe five and pipe two are communicated through pipe ten. The application solves the problem of higher cost and lower cost performance of prior art.

Description

Technical Field

[0001] This invention relates to the field of thermal management system technology, and in particular to a thermal management system for vehicles. Background Technology

[0002] A Chinese invention patent application with publication number CN120680894A, entitled "A Secondary Circuit Thermal Management System and Vehicle," describes a system where: "A first throttle valve 202 is provided on the main circulation circuit, connecting the condenser 103 and the evaporator 104; a second throttle valve 203 is provided on the bypass circuit. By providing the second throttle valve 203 in the bypass circuit, the impact of gaseous refrigerant on the compressor 201 can be reduced. Simultaneously, the first throttle valve 202 is normally open, while the second throttle valve 203 is normally closed, so that the refrigerant circuit is in the default normal circulation mode, i.e., only the main circulation circuit is running; then, by opening the second throttle valve 203, the refrigerant circuit can enter the low-temperature hot gas bypass mode, i.e., the main circulation circuit and the bypass circuit operate simultaneously." However, the second throttle valve requires a large-diameter valve with higher cost to achieve the hot gas bypass technology, resulting in a high cost and low cost-effectiveness for this secondary circuit thermal management system. Summary of the Invention

[0003] The purpose of this invention is to provide a low-cost, high-performance automotive thermal management system.

[0004] To achieve the above-mentioned objectives, the automotive thermal management system and control method of the present invention adopt the following technical solution:

[0005] A vehicle thermal management system includes a compressor, a water-cooled condenser, a control valve, and a water-cooled evaporator connected in series. One end of the water-side passage of the water-cooled condenser and the water-cooled evaporator is connected to a multi-way valve, and the other end of the water-side passage of the water-cooled condenser is connected to a water pump. The other end of the water-side passage of the water-cooled evaporator is connected to a water pump. The multi-way valve is also connected to a cold air core, a warm air core, a low-temperature radiator, and a pipe. One end of the warm air core is connected to the multi-way valve, and the other end is connected to the multi-way valve. The multi-way valve is also connected to pipes two, three, four, five, and six. One end of pipe two is connected to the multi-way valve, and the other end is connected to the water pump. One end of pipe three is connected to the multi-way valve, and the other end is connected to an electric drive system. One end of the electric drive system is connected to pipe three, and the other end is connected to multi-way valve one through a low-temperature radiator and pipe one respectively. One end of pipe four is connected to multi-way valve two, and the other end is connected to water pump two. One end of pipe five and pipe six is ​​connected to multi-way valve two, and the other end is connected to a battery. The battery is connected to water pump three. One end of the cold air core is connected to multi-way valve one, and the other end is connected to multi-way valve three. Multi-way valve three is also connected to pipe seven and pipe eight. One end of pipe seven is connected to multi-way valve three, and the other end is connected to pipe six. One end of pipe eight is connected to multi-way valve three, and the other end is connected to pipe four. Pipe three and pipe two are connected through pipe nine, and pipe five and pipe two are connected through pipe ten. An electric heater is installed on the pipe connecting multi-way valve one and the warm air core.

[0006] Preferably, the multi-way valve is a six-way proportional water valve.

[0007] Preferably, the second multi-way valve is a six-way proportional water valve.

[0008] Preferably, the multi-way valve three is a three-way proportional water valve.

[0009] Preferably, the device also includes a liquid storage tank and an intermediate heat exchanger. The liquid inlet of the liquid storage tank is connected to the liquid outlet of the water-cooled condenser. The liquid inlet of the high-pressure side passage of the intermediate heat exchanger is connected to the liquid outlet of the liquid storage tank. The liquid outlet of the high-pressure side passage of the intermediate heat exchanger is connected to a control valve. The air inlet of the low-pressure side passage of the intermediate heat exchanger is connected to the air outlet of the water-cooled evaporator. The air outlet of the low-pressure side passage of the intermediate heat exchanger is connected to the air inlet of the compressor.

[0010] Preferably, the control valve is an expansion valve.

[0011] Preferably, it also includes a kettle one and a kettle two. The water inlet of kettle one is connected to the liquid inlet of water pump one, the water inlet of kettle two is connected to the liquid inlet of water pump two, the vent of kettle one is connected to the liquid outlet of the low-temperature radiator through an vent pipe, the vent of kettle one is connected to the liquid outlet of the warm air core through an vent pipe, and the vent of kettle two is connected to the liquid outlet of the cold air core through an vent pipe. A throttling valve is installed on the vent pipe.

[0012] Compared with the prior art, the beneficial effects of the present invention are as follows:

[0013] 1. When the ambient temperature is extremely low and the waste heat of the electric drive system is available but insufficient to reach the heat required for the normal start-up of the heat pump, the water-side passage of the water-cooled condenser obtains heat from the agent-side passage. Under the action of water pump one, the high-temperature coolant enters the pipe three through multi-way valve one, cold air core, multi-way valve two, and pipe seven, supplementing the cooling water in pipe three with heat. Under the action of water pump two, the mixed high-temperature coolant enters the water-side passage of the water-cooled evaporator, providing heat to the agent-side passage of the water-cooled evaporator. This can replace the existing hot gas bypass technology, saving costs and improving cost performance.

[0014] 2. Installing an electric heater on the pipe connecting the multi-way valve to the heater core can improve the temperature rise efficiency of the coolant and ensure the start-up capability of the heat pump in extremely cold environments. Since the cost of the electric heater is lower than that of the large-diameter valve, this application still has a high cost-performance ratio even with the addition of the electric heater, and is especially suitable for cold regions.

[0015] 3. Both multi-way valve one and multi-way valve two are six-way proportional water valves, while multi-way valve three is a three-way proportional water valve. This not only reduces the number of valve components, but also eliminates the need for control valves with more interfaces, further reducing costs. It can also reduce system pressure drop, save water pump power consumption, reduce leakage risk, and simplify control logic.

[0016] 4. By controlling multi-way valve one, multi-way valve two, and multi-way valve three, the system can be adjusted to the water replenishment and exhaust mode. At this time, water is replenished to the water-cooled condenser, low-temperature radiator, electric drive system, electric heater, and warm air core through water kettle one, and water is replenished to the water-cooled evaporator, cold air core, and battery through water kettle two, so that water can be replenished to all the above components at the same time. Attached Figure Description

[0017] Figure 1 This is a schematic diagram of a thermal management system for vehicles.

[0018] Figure 2 This is a schematic diagram illustrating the working principle of Mode 1.

[0019] Figure 3 This is a diagram illustrating the working principle of Mode 2.

[0020] Figure 4 This is a diagram illustrating the working principle of Mode 3.

[0021] Figure 5 This is a diagram illustrating the working principle of Mode 4.

[0022] Figure 6 This is a diagram illustrating the working principle of Mode 5.

[0023] Figure 7 This is a diagram illustrating the working principle of Mode 6.

[0024] Figure 8 This is a diagram illustrating the working principle of Mode 7.

[0025] Figure 9 This is a diagram illustrating the working principle of Mode 8.

[0026] Figure 10 This is a diagram illustrating the working principle of Mode 9.

[0027] Figure 11 This is a diagram illustrating the working principle of Mode 10.

[0028] Figure 12 This is a diagram illustrating the working principle of Mode 11.

[0029] Figure 13 This is a schematic diagram illustrating the working principle of Mode Twelve.

[0030] Figure 14 This is a diagram illustrating the working principle of Mode Thirteen.

[0031] Figure 15 This is a diagram illustrating the working principle of Mode Fourteen.

[0032] Figure 16 This is a diagram illustrating the working principle of Mode 15.

[0033] Figure 17 This is a diagram illustrating the working principle of Mode Sixteen.

[0034] Figure 18 This is a schematic diagram illustrating the working principle of Mode 17.

[0035] The components include: 1. Compressor; 2. Water-cooled condenser; 3. Liquid receiver; 4. Intermediate heat exchanger; 5. Control valve; 6. Water-cooled evaporator; 7. Multi-way valve I; 8. Water pump I; 9. Water pump II; 10. Cold air core; 11. Warm air core; 12. Multi-way valve II; 13. Pipe II; 14. Pipe III; 15. Electric drive system; 16. Low-temperature radiator; 17. Pipe I; 18. Pipe IV; 19. Pipe V; 20. Pipe VI; 21. Battery; 22. Water pump III; 23. Multi-way valve III; 24. Pipe VII; 25. Pipe VIII; 26. Pipe IX; 27. Pipe X; 28. Electric heater; 29. ​​Water jug ​​I; 30. Water jug ​​II; 31. Exhaust pipe; 32. Throttling valve. Detailed Implementation

[0036] The present invention will be further illustrated below with reference to specific embodiments. It should be understood that these embodiments are for illustrative purposes only and are not intended to limit the scope of the invention. After reading the present invention, any modifications of the present invention in various equivalent forms by those skilled in the art will fall within the scope defined by the appended claims.

[0037] like Figure 1As shown, a vehicle thermal management system includes a compressor 1, a water-cooled condenser 2, a liquid receiver 3, an intermediate heat exchanger 4, a control valve 5, and a water-cooled evaporator 6 connected in series. The control valve 5 is an expansion valve. Specifically, the outlet of the compressor 1 is connected to the inlet of the refrigerant-side passage of the water-cooled condenser 2; the outlet of the refrigerant-side passage of the water-cooled condenser 2 is connected to the inlet of the liquid receiver 3; the outlet of the liquid receiver 3 is connected to the inlet of the high-pressure side passage of the intermediate heat exchanger 4; the outlet of the high-pressure side passage of the intermediate heat exchanger 4 is connected to the inlet of the control valve 5; the outlet of the control valve 5 is connected to the inlet of the refrigerant-side passage of the water-cooled evaporator 6; and the outlet of the refrigerant-side passage of the water-cooled evaporator 6 is connected to the inlet of the low-pressure side passage of the intermediate heat exchanger 4. The outlet of the low-pressure side passage of compressor 4 is connected to the inlet of compressor 1. One end of the water-side passage of water-cooled condenser 2 and water-cooled evaporator 6 is connected to multi-way valve 7, which is a six-way proportional water valve. Port 1 of multi-way valve 7 is connected to the liquid outlet of water-cooled condenser 2, and port 5 of multi-way valve 7 is connected to the liquid outlet of water-cooled evaporator 6. The liquid inlet of the water-side passage of water-cooled condenser 2 is connected to water pump 8, and the liquid inlet of the water-side passage of water-cooled evaporator 6 is connected to water pump 9. Port 6 of multi-way valve 7 is connected to cold air core 10, and port 2 of multi-way valve 7 is connected to warm air core 11. The liquid inlet of warm air core 11 is connected to port 2 of multi-way valve 7, and the liquid outlet of warm air core 11 is connected to multi-way valve 12, which is a six-way proportional water valve. The first port of multi-way valve 12 is connected to the outlet of the heater core 11. The second port of multi-way valve 12 is connected to the inlet of water pump 8 via pipe 13. The third port of multi-way valve 12 is connected to the electric drive system 15 via pipe 14. The outlet of the electric drive system 15 is connected to the third port of multi-way valve 12. The inlet of the electric drive system 15 is connected to multi-way valve 7 via low-temperature radiator 16 and pipe 17. The inlet of low-temperature radiator 16 is connected to the third port of multi-way valve 7. The inlet of pipe 17 is connected to the fourth port of multi-way valve 7. The outlets of low-temperature radiator 16 and pipe 17 are both connected to the inlet of electric drive system 15. The fourth port of multi-way valve 12 is connected to the inlet of water pump 9 via pipe 18. The fifth port of multi-way valve 12 is connected to... Connect pipe 5.19. Connect the 6th port of multi-way valve 2.12 to pipe 6.20. Pipe 6.20 connects to battery 21. The inlet of battery 21 connects to pipe 6.20. The outlet of battery 21 connects to pipe 5.19. Battery 21 connects to water pump 3.22. The outlet of water pump 3.22 connects to the inlet of battery 21. The inlet of water pump 3.22 connects to the outlet of battery 21. The inlet of cold air core 10 connects to the 6th port of multi-way valve 1. The outlet of cold air core 10 connects to multi-way valve 3.23. Multi-way valve 3.23 is a three-way proportional water valve. The 1st port of multi-way valve 3.23 connects to the outlet of cold air core 10. The 2nd port of multi-way valve 3.23 is connected to pipe 6.20 via pipe 7.24. The 3rd port of multi-way valve 3.23 is connected to pipe 4.18 via pipe 8.25.Pipe 3 14 and pipe 2 13 are connected by pipe 9 26, and pipe 5 19 and pipe 2 13 are connected by pipe 10 27. An electric heater 28 is installed on the pipe connecting multi-way valve 1 7 and the warm air core 11.

[0038] It also includes a kettle 29 and a kettle 30. The water inlet of kettle 29 is connected to the liquid inlet of water pump 8, and the water inlet of kettle 30 is connected to the liquid inlet of water pump 9. The vent a of kettle 29 is connected to the liquid outlet of the low-temperature radiator 16 through the vent pipe 31. The vent b of kettle 29 is connected to the liquid outlet of the warm air core 11 through the vent pipe 31. The vent of kettle 30 is connected to the liquid outlet of the cold air core 10 through the vent pipe 31. A throttle valve 32 is installed on the vent pipe 31.

[0039] A control method for a vehicle thermal management system includes the following operating modes:

[0040] Mode 1 (Self-produced and self-heating): such as Figure 2As shown, ports 1 and 2 of multi-way valve 7 are connected, ports 1 and 6 of multi-way valve 7 are connected, ports 4 and 5 of multi-way valve 7 are connected, ports 1 and 2 of multi-way valve 12 are connected, ports 1 and 6 of multi-way valve 12 are connected, ports 3 and 4 of multi-way valve 12 are connected, and ports 1 and 3 of multi-way valve 23 are connected. Under the action of compressor 1, high-temperature and high-pressure gaseous refrigerant enters the refrigerant-side passage of water-cooled condenser 2, transferring heat to the water-side passage of water-cooled condenser 2. Under the action of water pump 8, the heated cooling water enters port 1 of multi-way valve 7 and is diverted. Part of the cooling water is discharged from port 2 of multi-way valve 17, and the other part is discharged from port 6 of multi-way valve 17. The cooling water discharged from port 2 of multi-way valve 17 is heated by electric heater 28 and then enters heater core 11 to heat the passenger cabin. The cooled water after heat exchange enters port 1 of multi-way valve 22 for further diversion. Part of the cooling water is discharged from port 2 of multi-way valve 22 and enters pipe 23, while the other part is discharged from port 6 of multi-way valve 22 and then enters the micro-circulation loop composed of battery 21 and water pump 22 through pipe 6 20 to evenly heat battery 21. According to the law of conservation of mass, when cooling water enters the micro-circulation loop from pipe 6 20, an equal amount of cooling water must be returned via pipe 5 19. The returned cooling water flows through pipe 5 19 and pipe 10 27 into pipe 2 13. The cooling water discharged from port 6 of multi-way valve 1 7 enters the cold air core 10. At this time, the cold air core 10 can also provide heating for the passenger cabin. The cooled water after heat exchange enters port 1 of multi-way valve 3 and is discharged from port 3 of multi-way valve 3. It then mixes with the cooling water in pipe 4 18 via pipe 8 25. Under the action of water pump 2 9, the mixed cooling water enters the water-side passage of the water-cooled evaporator 6. The heat released by the high-temperature, high-pressure gaseous refrigerant during condensation in the refrigerant-side passage of the water-cooled condenser 2 is provided to the water-cooled evaporator 6. The liquid refrigerant absorbs heat and evaporates in the refrigerant-side passage of the water-cooled evaporator 6, thus achieving self-heating. After heat exchange, the cooling water enters port 5 of multi-way valve 1 7 and exits from port 4. It then passes through electric drive system 15 and pipe 3 14 to enter port 3 of multi-way valve 2 12 and exits from port 4 into pipe 4. Simultaneously, according to the law of conservation of mass, a portion of the cooling water in pipe 3 14 flows through pipe 9 into pipe 2 13 and returns to water pump 1 8, thus completing the cycle. This operating mode is suitable for scenarios where the ambient temperature is extremely low in winter, the waste heat from the electric drive can be utilized but is insufficient to meet the heat required for the heat pump to start, and both the battery and passenger cabin require heating.

[0041] Mode 2 (Dual Cooling): such as Figure 3As shown, ports 1 and 3 of multi-way valve 7 are connected, ports 5 and 6 of multi-way valve 7 are connected, ports 4 and 5 of multi-way valve 12 are connected, ports 1 and 3 of multi-way valve 23 are connected, and ports 1 and 2 of multi-way valve 23 are connected. Under the action of compressor 1, high-temperature and high-pressure gaseous refrigerant enters the refrigerant-side passage of water-cooled condenser 2, transferring heat to the water-side passage of water-cooled condenser 2. Under the action of water pump 8, the heated cooling water enters port 1 of multi-way valve 7, exits through port 3 of multi-way valve 7, and then enters low-temperature radiator 16 to exchange heat with the outside. It then returns to water pump 8 through electric drive system 15, pipe 3 14, pipe 9 26, and pipe 2 13, thus circulating. When liquid refrigerant passes through the refrigerant-side passage of water-cooled evaporator 6, it absorbs heat from the water-side passage of water-cooled evaporator 6. Under the action of water pump 2 9, The cooled water enters port 5 of multi-way valve 17 and exits through port 6. It then enters the cold air core 10 to cool the passenger cabin. The cooled water after heat exchange enters port 1 of multi-way valve 323. After flow regulation by multi-way valve 323, a portion of the cooled water exits through port 2 and flows through pipes 724 and 620 into a micro-circulation loop consisting of battery 21 and water pump 22. This provides uniform cooling to battery 21, lowering it to a suitable temperature. According to the law of conservation of mass, when cooled water enters this micro-circulation loop through pipe 620, an equal amount of cooled water is returned through pipe 519. This returned cooled water enters port 5 of multi-way valve 22 and exits through port 4. It mixes with the cooled water exiting through port 3 of multi-way valve 3 and then returns to water pump 29 through pipe 418, thus completing the cycle. This operating mode is suitable for scenarios involving fast charging of batteries in high-temperature summers, where both the battery and passenger cabin require cooling.

[0042] Mode 3 (single passenger cabin cooling, battery temperature equalization): such as Figure 4 As shown, based on Mode 2, disconnecting the connection between ports 4 and 5 of multi-way valve 22 and the connection between ports 1 and 2 of multi-way valve 3 can achieve single-passenger cabin cooling and battery temperature equalization. This operating mode is suitable for scenarios where only the passenger cabin needs cooling in summer.

[0043] Mode 4 (Single Battery Cooling): For example... Figure 5 As shown, based on Mode 2, disconnecting the connection between ports 1 and 3 of the multi-way valve 3 23 enables single-cell cooling. This operating mode is suitable for scenarios requiring cooling during fast charging of high-temperature batteries.

[0044] Mode 5 (Cooling and Dehumidification, Battery Temperature Equalization): For example... Figure 6As shown, ports 1 and 2 of multi-way valve 7 are connected, ports 1 and 3 of multi-way valve 7 are connected, ports 5 and 6 of multi-way valve 7 are connected, ports 1 and 2 of multi-way valve 12 are connected, and ports 1 and 3 of multi-way valve 23 are connected. Under the action of compressor 1, high-temperature and high-pressure gaseous refrigerant enters the refrigerant-side passage of water-cooled condenser 2, transferring heat to the water-side passage of water-cooled condenser 2. Under the action of water pump 8, the heated cooling water enters port 1 of multi-way valve 7 and is diverted. Part of the cooling water is discharged from port 3 of multi-way valve 7 and then enters low-temperature radiator 16 to exchange heat with the outside. It then returns to water pump 8 through electric drive system 15, pipe 3 14, pipe 9 26, and pipe 2 13. The other part of the cooling water is discharged from port 2 of multi-way valve 7 and enters the heater core. Body 11 heats the passenger cabin to maintain passenger comfort. The cooled water after heat exchange enters port 1 of multi-way valve 22, exits through port 2, and flows back to water pump 8 via pipe 23, thus circulating. When liquid refrigerant passes through the refrigerant side passage of water-cooled evaporator 6, it absorbs heat from the water side passage. Under the action of water pump 29, the cooled water after heat exchange enters port 5 of multi-way valve 17, exits through port 6, and enters the cold air core 10 to cool and dehumidify the passenger cabin. The cooled water after heat exchange enters port 1 of multi-way valve 323, exits through port 3, and returns to water pump 29 via pipe 825 and pipe 418, thus circulating. The micro-circulation loop composed of battery 21 and water pump 22 operates independently to prevent localized overheating of battery 21. This operating mode is suitable for scenarios requiring cooling and dehumidification in the passenger cabin during spring and autumn.

[0045] Mode 6 (Refrigeration and Dehumidification, Battery Cooling): For example... Figure 7 As shown, based on mode five, ports 4 and 5 of multi-way valve 22 are connected, and ports 1 and 2 of multi-way valve 323 are connected. Cooling water entering through port 1 of multi-way valve 323 is partially discharged through port 2, then flows through pipes 7 and 6 into a micro-circulation loop consisting of battery 21 and water pump 22, thus providing uniform cooling for battery 21. This operating mode is suitable for scenarios in spring and autumn where the passenger cabin requires cooling and dehumidification, and the battery needs to be cooled.

[0046] Mode 7 (Cooling and Dehumidification, Battery Heating): For example... Figure 8As shown, based on mode five, the cooling water entering through port 1 of multi-way valve 2 12 is partially discharged through port 6 of multi-way valve 2 12, and then enters the micro-circulation loop composed of battery 21 and water pump 22 via pipe 6 20, thereby uniformly heating battery 21. This working mode is suitable for scenarios in spring and autumn where the passenger cabin needs cooling and dehumidification, and the battery needs to be heated. In this mode, the heating core 11 can also be controlled to not work (no heat exchange), and the electric heater 28 can be used to supplement heat appropriately to achieve passenger cabin cooling and battery heating mode, which is suitable for scenarios in autumn and summer where the passenger cabin needs cooling and the battery needs to be preheated for super-fast charging.

[0047] Mode 8 (Dual heat source heat pump, single passenger cabin heating): such as Figure 9 As shown, ports 1 and 2 of multi-way valve 1 are connected, ports 3 and 5 of multi-way valve 1 are connected, ports 1 and 2 of multi-way valve 2 are connected, ports 3 and 4 of multi-way valve 2 are connected, and all ports of multi-way valve 3 are closed. Under the action of compressor 1, high-temperature and high-pressure gaseous refrigerant enters the refrigerant-side passage of water-cooled condenser 2, transferring heat to the water-side passage of water-cooled condenser 2. Under the action of water pump 1, the heated cooling water enters port 1 of multi-way valve 1, and after being discharged from port 2 of multi-way valve 1, it is appropriately heated by electric heater 28 and then enters the heater core 11 to heat the passenger cabin. The cooled water after heat exchange enters port 1 of multi-way valve 2 12, and is discharged from port 2 of multi-way valve 1. After being appropriately heated by electric heater 28, it enters the heater core 11 to heat the passenger cabin. After being discharged from port 2 of the battery 21, the refrigerant returns to water pump 8 via pipe 13, thus completing the cycle. When the liquid refrigerant passes through the refrigerant-side passage of the water-cooled evaporator 6, it absorbs heat from the water-side passage. Under the action of water pump 9, the cooled water after heat exchange enters port 5 of multi-way valve 7, and is discharged from port 3 of multi-way valve 7 before entering the low-temperature radiator 16 to absorb external heat. The cooled water continues to absorb residual heat as it passes through the electric drive system 15, and the heated cooled water enters port 3 of multi-way valve 12, and is discharged from port 4 of multi-way valve 12 before returning to water pump 9 via pipe 18, thus completing the cycle. The micro-circulation loop consisting of battery 21 and water pump 22 operates independently to prevent localized overheating of battery 21. This operating mode is suitable for scenarios where the ambient temperature is low in winter and the passenger cabin requires heating.

[0048] Mode 9 (Dual heat source heat pump, single battery heating): such as Figure 10 As shown, based on mode eight, the heater core 11 is controlled to not work (no heat exchange), the connection between ports 1 and 2 of the multi-way valve 2 12 is cut off, and the connection is switched to ports 1 and 6. That is, the cooling water is discharged from port 6 of the multi-way valve 2 12 and enters the micro-circulation loop composed of battery 21 and water pump 22 to achieve single-cell heating. This working mode is suitable for scenarios where the battery needs to reach the optimal temperature range for super-fast charging before fast charging.

[0049] Mode 10 (Dual heat source heat pump, dual heating): such as Figure 11 As shown, based on Mode 9, the heater core 11 resumes operation, enabling simultaneous heating of the passenger cabin and battery. This operating mode is suitable for scenarios where the ambient temperature is low in winter, the battery needs to be preheated for super-fast charging, and the passenger cabin needs heating at the same time.

[0050] Mode 11 (Battery Water Source Heat Pump): For example... Figure 12 As shown, based on Mode 10, the original connection of ports 1 and 6 of multi-way valve 2 12 is changed to a connection of ports 1 and 2, and the original connection of ports 3 and 4 of multi-way valve 2 12 is changed to a connection of ports 3 and 5. Ports 2 and 3 of multi-way valve 3 23 are also connected. Cooling water that has absorbed waste heat from the electric drive system 15 enters port 3 of multi-way valve 2 12, exits from port 5, and then enters the micro-circulation loop composed of battery 21 and water pump 22 via pipe 5 19. Cooling water that has absorbed waste heat from battery 21 then enters port 2 of multi-way valve 3 23 via pipes 6 20 and 7 24, exits from port 3, and returns to the water-cooled evaporator 6 via pipes 8 25 and 4 18, transferring heat to the heat pump. This operating mode is suitable for scenarios where the battery is super-fast charged in winter, waste heat from the battery can be recovered, and the passenger cabin needs heating.

[0051] Mode Twelve (Electric-Driven Water Source Heat Pump, Single Passenger Cabin Heating): For example... Figure 13 As shown, ports 1 and 2 of multi-way valve 7 are connected, ports 4 and 5 of multi-way valve 7 are connected, ports 1 and 2 of multi-way valve 12 are connected, ports 3 and 4 of multi-way valve 12 are connected, and all ports of multi-way valve 23 are closed. Under the action of compressor 1, high-temperature and high-pressure gaseous refrigerant enters the refrigerant-side passage of water-cooled condenser 2, transferring heat to the water-side passage of water-cooled condenser 2. Under the action of water pump 8, the heated cooling water enters port 1 of multi-way valve 7, and after being discharged from port 2 of multi-way valve 7, it is appropriately heated by electric heater 28 and then enters the heater core 11 to heat the passenger cabin. The cooled water after heat exchange enters port 1 of multi-way valve 12. The refrigerant, after being discharged from port 2 of multi-way valve 212, returns to water pump 8 via pipe 213, thus circulating. When the liquid refrigerant passes through the refrigerant side passage of water-cooled evaporator 6, it absorbs heat from the water side passage. Under the action of water pump 29, the cooled water after heat exchange enters port 5 of multi-way valve 7, is discharged from port 4 of multi-way valve 7, and then directly passes through pipe 17 to absorb residual heat through electric drive system 15. The heated cooled water enters port 3 of multi-way valve 212, is discharged from port 4 of multi-way valve 212, and then returns to water pump 29 via pipe 418, thus circulating. The micro-circulation loop composed of battery 21 and water pump 22 operates independently to prevent local overheating of battery 21. This working mode is suitable for scenarios where the ambient temperature is extremely low in winter, heat cannot be absorbed from the environment, and the passenger cabin needs heating.

[0052] Mode 13 (Electric-driven water source heat pump, single-battery heating): such as Figure 14As shown, based on mode twelve, the heater core 11 is controlled to not operate (no heat exchange). The original connection of ports 1 and 2 of the multi-way valve 12 is changed to a connection of ports 1 and 6. At this time, the cooling water, which is appropriately heated by the electric heater 28, enters port 1 of the multi-way valve 12 and is discharged from port 6. It then enters the micro-circulation loop composed of the battery 21 and the water pump 22 through pipe 6 20, thereby providing uniform heating for the battery 21. This working mode is suitable for scenarios where the ambient temperature is extremely low in winter, making it impossible to absorb heat from the environment, and where the battery needs to be preheated before super-fast charging.

[0053] Mode Fourteen (Electric-Driven Water Source Heat Pump, Dual Heating): For example... Figure 15 As shown, based on Mode Thirteen, the heater core 11 resumes operation, and multi-way valve 2 12 adds ports 1 and 2. At this time, the cooling water, appropriately heated by the electric heater 28, enters port 1 of multi-way valve 2 12. Part of it is discharged through port 6 of multi-way valve 12, flowing through pipe 6 20 into the micro-circulation loop formed by battery 21 and water pump 22, thus providing uniform heating for battery 21. The other part is discharged through port 2 of multi-way valve 2 12, merging with the cooling water returned through pipe 10 27, and returning to water pump 8. This cycle completes the simultaneous heating of the passenger cabin and battery. This operating mode is suitable for scenarios where the ambient temperature is extremely low in winter, making it impossible to absorb heat from the environment, and where the battery needs preheating before super-fast charging while the passenger cabin also needs heating.

[0054] Mode 15 (Heating and Dehumidification): For example... Figure 16As shown, ports 1 and 2 of multi-way valve 7 are connected, ports 3 and 5 of multi-way valve 7 are connected, ports 5 and 6 of multi-way valve 7 are connected, ports 1 and 2 of multi-way valve 12 are connected, ports 3 and 4 of multi-way valve 12 are connected, and ports 1 and 3 of multi-way valve 23 are connected. Under the action of compressor 1, high-temperature and high-pressure gaseous refrigerant enters the refrigerant-side passage of water-cooled condenser 2, transferring heat to the water-side passage of water-cooled condenser 2. Under the action of water pump 8, the heated cooling water enters port 1 of multi-way valve 7, and after being discharged from port 2 of multi-way valve 7, it is appropriately heated by electric heater 28 and then enters the heater core 11 to heat the passenger cabin. The cooled water after heat exchange enters port 1 of multi-way valve 12, and after being discharged from port 2 of multi-way valve 12, it returns to water pump 8 through pipe 2 13, thus circulating; liquid refrigerant... When the cooling water passes through the water-cooled evaporator 6 on the refrigerant side, it absorbs heat from the water-cooled evaporator 6 on the water side. Under the action of water pump 29, the cooled water after heat exchange enters the 5 port of multi-way valve 17 for diversion, and is discharged from the 3 port of multi-way valve 17 before entering the low-temperature radiator 16 to absorb external heat. The cooled water continues to absorb residual heat when passing through the electric drive system 15. The heated cooled water enters the 3 port of multi-way valve 212, is discharged from the 4 port of multi-way valve 212, and then returns to water pump 29 via pipe 418. It is discharged from the 6 port of multi-way valve 17 and enters the cold air core 10 to dehumidify the passenger cabin. The cooled water after heat exchange enters the 1 port of multi-way valve 323, is discharged from the 3 port of multi-way valve 323, and then flows into pipe 418 via pipe 825, thus circulating. The micro-circulation loop composed of battery 21 and water pump 22 operates independently to prevent local overheating of battery 21. This working mode is suitable for scenarios where the ambient temperature is extremely low in winter, heat cannot be absorbed from the environment, and the passenger cabin needs heating.

[0055] Mode 16 (Heating and Dehumidification, Battery Heating): For example... Figure 17 As shown, based on mode fourteen, ports 1 and 6 of multi-way valve two are connected. Cooling water, appropriately heated by electric heater 28, enters port 1 of multi-way valve two 12. A portion of the cooling water is discharged from port 6 of multi-way valve two 12 and enters the micro-circulation loop composed of battery 21 and water pump 22 via pipe 6 20. This allows for both heating and dehumidification, while also providing uniform heating for battery 21. This operating mode is suitable for scenarios in spring and autumn where passenger cabins require heating and dehumidification, and where batteries need preheating for super-fast charging.

[0056] Mode 17 (Water Replenishment and Air Exhaust): For example... Figure 18As shown, ports 1 and 2 of multi-way valve 7 are connected, ports 1 and 3 of multi-way valve 7 are connected, ports 5 and 6 of multi-way valve 7 are connected, ports 1 and 2 of multi-way valve 12 are connected, ports 4 and 5 of multi-way valve 12 are connected, ports 1 and 2 of multi-way valve 23 are connected, and ports 1 and 3 of multi-way valve 23 are connected. With all throttle valves 32 open, under the action of water pump 8, the cooling water supplied by kettle 29 flows through the water-cooled condenser 2 and enters port 1 of multi-way valve 7, where it is diverted. A portion of the cooling water is discharged from port 2 of multi-way valve 7 and flows sequentially through electric heater 28 and warm air core 11. The gas inside the warm air core 11 is discharged to kettle 29 through exhaust pipe 31. This portion of the cooling water enters port 1 of multi-way valve 22, is discharged from port 2 of multi-way valve 22, and then enters pipe 2 13. Another portion of the cooling water is discharged from port 3 of multi-way valve 7 and flows sequentially through... The gas flowing through the low-temperature radiator 16 and the electric drive system 15 is discharged from the exhaust pipe 31 to the water tank 29. This portion of the cooling water then flows into the pipe 2 13 through the pipe 3 14 and the pipe 9 26. At the same time, under the action of the water pump 2 9, the cooling water replenished by the water tank 2 30 flows through the water-cooled evaporator 6, enters the 5 port of the multi-way valve 7, and is discharged from the 6 port of the multi-way valve 7. It then flows through the cold air core 10, and the gas in the cold air core 10 is discharged from the exhaust pipe 31 to the water tank 29. Air pipe 31 discharges to water tank 2 30. Cooling water entering through multi-way valve 3 23 begins to split. Part of it is discharged through port 3 of multi-way valve 3 23 and flows into pipe 4 18 via pipe 8 25. The other part is discharged through port 2 of multi-way valve 3 23 and enters the micro-circulation loop composed of battery 21 and water pump 22. The excess cooling water in the micro-circulation loop enters port 5 of multi-way valve 2 12 via pipe 5 19 and is discharged through port 4 of multi-way valve 2 12 into pipe 4 18. This achieves simultaneous water replenishment to all the above components. After water replenishment is completed, all throttle valves 32 are closed.

[0057] The detailed description listed above is merely a specific description of feasible embodiments of the present invention and is not intended to limit the scope of protection of the present invention.

Claims

1. A thermal management system for vehicles, characterized in that: The system comprises a compressor, a water-cooled condenser, a control valve, and a water-cooled evaporator connected in series. One end of the water-side passage of the water-cooled condenser and evaporator is connected to a multi-way valve (V / V). The other end of the water-side passage of the water-cooled condenser is connected to a water pump (V / V). The other end of the water-side passage of the water-cooled evaporator is connected to a water pump (V / V). V / V is also connected to a cold air core, a warm air core, a low-temperature radiator, and pipe (V / V). One end of the warm air core is connected to V / V, and the other end is connected to V / V. V / V is also connected to pipes (V / V), (V / V), (V / V), and (V / ... One end of the pipe is connected to pipe three, and the other end is connected to multi-way valve one via a low-temperature radiator and pipe one respectively. One end of pipe four is connected to multi-way valve two, and the other end is connected to water pump two. One end of pipe five and pipe six is ​​connected to multi-way valve two, and the other end is connected to a battery. The battery is connected to water pump three. One end of the cold air core is connected to multi-way valve one, and the other end is connected to multi-way valve three. Multi-way valve three is also connected to pipe seven and pipe eight. One end of pipe seven is connected to multi-way valve three, and the other end is connected to pipe six. One end of pipe eight is connected to multi-way valve three, and the other end is connected to pipe four. Pipe three and pipe two are connected via pipe nine, and pipe five and pipe two are connected via pipe ten. An electric heater is installed on the pipe connecting multi-way valve one to the warm air core.

2. The vehicle thermal management system according to claim 1, characterized in that: The multi-way valve is a six-way proportional water valve.

3. The vehicle thermal management system according to claim 2, characterized in that: Both of the multi-way valves are six-way proportional water valves.

4. The vehicle thermal management system according to claim 3, characterized in that: The third multi-way valve is a three-way proportional water valve.

5. The vehicle thermal management system according to claim 1, characterized in that: It also includes a liquid storage tank and an intermediate heat exchanger. The liquid inlet of the liquid storage tank is connected to the liquid outlet of the water-cooled condenser. The liquid inlet of the high-pressure side passage of the intermediate heat exchanger is connected to the liquid outlet of the liquid storage tank. The liquid outlet of the high-pressure side passage of the intermediate heat exchanger is connected to a control valve. The air inlet of the low-pressure side passage of the intermediate heat exchanger is connected to the air outlet of the water-cooled evaporator. The air outlet of the low-pressure side passage of the intermediate heat exchanger is connected to the air inlet of the compressor.

6. The vehicle thermal management system according to claim 1, characterized in that: The control valve is an expansion valve.

7. The vehicle thermal management system according to claim 1, characterized in that: It also includes kettle one and kettle two. The water inlet of kettle one is connected to the liquid inlet of water pump one, and the water inlet of kettle two is connected to the liquid inlet of water pump two. The vent of kettle one is connected to the liquid outlet of the low-temperature radiator through the vent pipe. The vent of kettle one is connected to the liquid outlet of the warm air core through the vent pipe. The vent of kettle two is connected to the liquid outlet of the cold air core through the vent pipe. A throttling valve is installed on the vent pipe.

Images