Thermal management system and vehicle

Abstract

The utility model relates to a thermal management system and a vehicle. The thermal management system comprises a first air-conditioning circulation loop, a second air-conditioning circulation loop and a third air-conditioning circulation loop, the compressor, the refrigerant side of the heat exchanger and the refrigerant side of the refrigerator are sequentially connected in series to form the second air conditioner circulation loop; the compressor, the non-supercooling condenser and the evaporator are sequentially connected in series to form the third air conditioner circulation loop; the compressor, the non-supercooling condenser and the refrigerant side of the refrigerating machine are sequentially connected in series to form the fourth air conditioner circulation loop; the battery pack assembly and the water side of the refrigerating machine are sequentially connected in series to form a first battery pack circulation loop; the battery pack assembly, the water side of the refrigerator and the water side of the heat exchanger are sequentially connected in series to form a second battery pack circulation loop; the electric drive module and the water side of the refrigerator are sequentially connected in series to form a first electric drive circulation loop. According to the heat management system and the vehicle, the refrigerating speed is high, system control is easy, the structure is simple, and cost is low.

Description

Technical Field

[0001] This utility model belongs to the field of thermal management technology, specifically relating to a thermal management system and a vehicle. Background Technology

[0002] Currently, to achieve diverse heating modes, most thermal management systems employ the addition of PTC heating devices. However, this increases the cost and energy consumption of the thermal management system. Furthermore, the cooling rate of the various components is poor, system control is complex, and reliability is low. Utility Model Content

[0003] The purpose of this utility model is to provide a thermal management system and vehicle that not only has a high cooling rate and simple system control, but also has a simple structure and low cost.

[0004] The first aspect of this utility model discloses a thermal management system, including: a compressor, an internal cooling condenser, a non-subcooling condenser, a heat exchanger, an evaporator, and a refrigeration unit. The compressor, the internal cooling condenser, and the refrigeration unit are connected in series on their refrigerant sides to form a first air conditioning circulation loop; the compressor, the heat exchanger, and the refrigeration unit are connected in series on their refrigerant sides to form a second air conditioning circulation loop; the compressor, the non-subcooling condenser, and the evaporator are connected in series on their respective sides to form a third air conditioning circulation loop; the compressor, the non-subcooling condenser, and the evaporator are connected in series on their respective sides to form a third air conditioning circulation loop; the compressor, the non-subcooling condenser, and the evaporator are connected in series on their respective sides to form a third air conditioning circulation loop. The refrigerant side of the refrigeration unit is connected in series to form a fourth air conditioning circulation loop; the internal cooling condenser, the non-subcooling condenser, and the heat exchanger are all connected in parallel; the thermal management system also includes a battery pack assembly, which is connected in series with the water side of the refrigeration unit to form a first battery pack circulation loop; the battery pack assembly, the water side of the refrigeration unit, and the water side of the heat exchanger are connected in series to form a second battery pack circulation loop; the thermal management system also includes an electric drive module, which is connected in series with the water side of the refrigeration unit to form a first electric drive circulation loop.

[0005] In one exemplary embodiment, the passenger compartment circuit further includes a bypass pipeline, wherein the compressor, the bypass pipeline, and the refrigerant side of the refrigeration unit are connected in series to form a fifth air conditioning circulation circuit; wherein the pipelines of any one of the three components—the internal cooling condenser, the non-subcooling condenser, and the heat exchanger—are connected in parallel with the bypass pipeline.

[0006] In one exemplary embodiment, the passenger compartment circuit further includes a first coaxial tube and a second coaxial tube, the first coaxial tube and the second coaxial tube being connected to the third air conditioning circulation circuit and located at the inlet and outlet of the evaporator, respectively; the first air conditioning circulation circuit and the second air conditioning circulation circuit are both spaced apart from the first coaxial tube; the first air conditioning circulation circuit and the second air conditioning circulation circuit are both spaced apart from the second coaxial tube.

[0007] In one exemplary embodiment, the battery pack assembly, the water side of the chiller, the electric drive module, and the water side of the heat exchanger are connected in series to form a third battery pack circulation loop.

[0008] In one exemplary embodiment, the electric drive circuit further includes a heat sink, and the electric drive module is connected in series with the heat sink to form a second electric drive circulation circuit.

[0009] In one exemplary embodiment, the electric drive module, the water side of the chiller, and the radiator are connected in series to form a third electric drive circulation loop.

[0010] In one exemplary embodiment, the battery pack assembly, the water side of the chiller, the radiator, the electric drive module, and the water side of the heat exchanger are connected in series to form a fourth battery pack circulation loop.

[0011] In one exemplary embodiment, the electric drive circuit further includes a first water pump and a second water pump, wherein the first water pump is connected between the outlet of the radiator and the inlet of the electric drive module; and the second water pump is connected between the outlet of the electric drive module and the inlet of the radiator.

[0012] In one exemplary embodiment, the thermal management system further includes a seven-way valve, which includes a first valve port, a second valve port, a third valve port, a fourth valve port, a fifth valve port, a sixth valve port, and a seventh valve port; the first valve port is connected to the inlet of the electric drive module; the second valve port is connected to the water-side outlet of the chiller; the third valve port is connected to the inlet of the radiator; the fourth valve port is connected to the water-side inlet of the heat exchanger; the fifth valve port is connected to the outlet of the electric drive module; the sixth valve port is connected to the outlet of the battery pack assembly; and the seventh valve port is connected to the water-side inlet of the chiller.

[0013] The second aspect of this utility model discloses a vehicle, including a frame and the aforementioned thermal management system, wherein the thermal management system is connected to the frame.

[0014] The present invention has the following beneficial effects:

[0015] In this invention, when the vehicle needs to heat the passenger compartment, the refrigerant in the first air conditioning circulation loop forms a high-temperature, high-pressure gaseous refrigerant after passing through the compressor outlet. This gaseous refrigerant then enters the internal cooling condenser to release heat in the passenger compartment and finally returns to the compressor. Furthermore, when heating the passenger compartment, if the refrigerant temperature is still high after passing through the internal cooling condenser outlet, it can also enter the refrigerant side of the refrigeration unit to exchange heat with the coolant on the water side of the refrigeration unit before returning to the compressor. This heat is then used to heat the battery pack components through the second battery pack circulation loop. Therefore, this thermal management system can heat both the passenger compartment circuit and the battery pack components without the need for a PTC heating device.

[0016] When the vehicle needs to heat the battery pack assembly, the refrigerant in the second air conditioning circulation loop, after passing through the compressor outlet, forms a high-temperature, high-pressure gaseous refrigerant. This gaseous refrigerant then enters the refrigerant side of the heat exchanger, where it exchanges heat with the coolant on the water side before returning to the compressor. The coolant on the water side of the heat exchanger, after being heated by the refrigerant on the refrigerant side, circulates through the second battery pack circulation loop, thus heating the battery pack assembly. Therefore, this thermal management system can heat the battery pack assembly without requiring a PTC heating device.

[0017] When the vehicle needs to cool the passenger compartment circuit, the refrigerant in the third air conditioning circulation circuit will form a high-temperature and high-pressure gaseous refrigerant after passing through the compressor outlet. It will then enter the non-subcooled condenser to exchange heat with the air and cool down. Next, it will enter the evaporator and absorb heat from the passenger compartment to reduce the temperature of the passenger compartment.

[0018] When the vehicle needs to cool the battery pack components, the refrigerant in the fourth air conditioning circulation loop, after passing through the compressor outlet, forms a high-temperature, high-pressure gaseous refrigerant. This gaseous refrigerant then enters the non-subcooled condenser to exchange heat with the air, thus cooling the refrigerant. It then enters the refrigerant side of the refrigeration unit to exchange heat with the coolant on the water side before returning to the compressor. Meanwhile, the coolant on the water side of the refrigeration unit, after being cooled by the refrigerant on the refrigerant side, circulates through the first battery pack circulation loop to cool the battery pack components.

[0019] When the vehicle needs to cool the electric drive circuit, the refrigerant in the fourth air conditioning circulation loop forms a high-temperature, high-pressure gaseous refrigerant after passing through the compressor outlet. It then enters the non-subcooled condenser to exchange heat with the air and cool down. Next, it enters the refrigerant side of the refrigeration unit to exchange heat with the coolant on the water side before returning to the compressor. Meanwhile, the coolant on the water side of the refrigeration unit, after being cooled by the refrigerant on the refrigerant side, circulates through the first electric drive circulation loop to cool the electric drive module.

[0020] In summary, the thermal management system of this utility model can not only cool the passenger compartment, electric drive module and battery pack components through direct refrigerant cooling, thus achieving a high cooling rate and simple system control, but also heat the passenger compartment and battery pack components without the need for a PTC heating device, making the thermal management system simple in structure and low in cost.

[0021] It should be understood that the above general description and the following detailed description are merely exemplary and illustrative, and do not limit the application. Attached Figure Description

[0022] The accompanying drawings, which are incorporated in and form part of this specification, illustrate embodiments consistent with this application and, together with the description, serve to explain the principles of this application. It is obvious that the drawings described below are merely some embodiments of this application, and those skilled in the art can obtain other drawings based on these drawings without any inventive effort. The drawings herein are for illustrating the inventive concept of this application and are not entirely equivalent to the structure of the actual product protected by this application.

[0023] Figure 1 A schematic diagram of the thermal management system in an embodiment of this utility model is shown.

[0024] Figure 2 The diagram shows the refrigerant flow paths of the first and second air conditioning circulation loops in the thermal management system of this utility model embodiment.

[0025] Figure 3 The diagram shows the refrigerant flow path of the third to fifth air conditioning circulation loops in the thermal management system of this utility model embodiment.

[0026] Figure 4 A schematic diagram of the refrigerant flow path in the sixth to seventh air conditioning circulation loops of the thermal management system in an embodiment of this utility model is shown.

[0027] Figure 5 A schematic diagram of the coolant flow path in the first electric drive circulation loop of the thermal management system in an embodiment of the present invention is shown.

[0028] Figure 6 A schematic diagram of the coolant flow path in the second electric drive circulation loop of the thermal management system in an embodiment of the present invention is shown.

[0029] Figure 7 A schematic diagram of the coolant flow path in the third electric drive circulation loop of the thermal management system in an embodiment of the present invention is shown.

[0030] Figure 8A schematic diagram of the coolant flow path in the first battery pack circulation loop of the thermal management system in an embodiment of the present invention is shown.

[0031] Figure 9 A schematic diagram of the coolant flow path in the second battery pack circulation loop of the thermal management system in an embodiment of the present invention is shown.

[0032] Figure 10 A schematic diagram of the coolant flow path in the third battery pack circulation loop of the thermal management system in an embodiment of the present invention is shown.

[0033] Figure 11 A schematic diagram of the coolant flow path in the fourth battery pack circulation loop of the thermal management system in an embodiment of the present invention is shown.

[0034] Explanation of reference numerals in the attached figures:

[0035] 10. Passenger compartment circuit; 11. Compressor; 12. Internal cooling condenser; 13. Refrigeration unit; 14. Heat exchanger; 15. Evaporator; 16. Non-subcooled condenser; 17. Bypass line; 18. Rear air conditioning module; 19. Receiver; 10a. First air conditioning circulation circuit; 10b. Second air conditioning circulation circuit; 10c. Third air conditioning circulation circuit; 10d. Fourth air conditioning circulation circuit; 10e. Fifth air conditioning circulation circuit; 10f. Sixth air conditioning circulation circuit; 10g. Seventh air conditioning circulation circuit; L1. First coaxial tube; L2. Second coaxial tube; PT1. First temperature and pressure sensor; PT2. Second temperature and pressure sensor; PT3. Third temperature and pressure sensor; 20. Electric drive circuit; 21. Electric drive module; 22. Radiator ; 23, First water pump; 24, Second water pump; 25, Water storage bottle; 20a, First electric drive circulation loop; 20b, Second electric drive circulation loop; 20c, Third electric drive circulation loop; T1, First temperature sensor; 30, Battery pack circuit; 31, Battery pack assembly; 32, Third water pump; T2, Second temperature sensor; T3, Third temperature sensor; 30a, First battery pack circulation loop; 30b, Second battery pack circulation loop; 30c, Third battery pack circulation loop; 30d, Fourth battery pack circulation loop; 40, Seven-way valve; E1, First control valve; E2, Second control valve; E3, Third control valve; E4, Fourth control valve; E5, Fifth control valve; E6, Sixth control valve; E7, Seventh control valve. Detailed Implementation

[0036] Exemplary embodiments will now be described more fully with reference to the accompanying drawings. However, these exemplary embodiments can be implemented in many forms and should not be construed as limited to the examples set forth herein; rather, these embodiments are provided to make this application more comprehensive and complete, and to fully convey the concept of the exemplary embodiments to those skilled in the art.

[0037] Furthermore, the described features, structures, or characteristics can be combined in any suitable manner in one or more embodiments. Numerous specific details are provided in the following description to give a thorough understanding of embodiments of this application. However, those skilled in the art will recognize that the technical solutions of this application can be practiced without one or more of the specific details, or other methods, components, apparatuses, steps, etc., can be employed. In other instances, well-known methods, apparatuses, implementations, or operations are not shown or described in detail to avoid obscuring various aspects of this application.

[0038] The present application will now be described in further detail with reference to the accompanying drawings and specific embodiments. It should be noted that the technical features involved in the various embodiments described below can be combined with each other as long as they do not conflict with each other. The embodiments described below with reference to the accompanying drawings are exemplary and intended to explain the present application, and should not be construed as limiting the present application.

[0039] Combination Figures 1 to 11 As shown, this embodiment provides a thermal management system, which includes a crew compartment circuit 10, an electric drive circuit 20, and a battery pack circuit 30. The structure and working principle of the crew compartment circuit 10, the electric drive circuit 20, and the battery pack circuit 30 are described in detail below:

[0040] Combination Figure 2 As shown, the passenger compartment circuit 10 includes a compressor 11, an internal cooling condenser 12, and a refrigeration unit 13. The compressor 11, the internal cooling condenser 12, and the refrigeration unit 13 are connected in series on the refrigerant side to form a first air conditioning circulation circuit 10a.

[0041] In this embodiment, within the first air conditioning circulation loop 10a, the refrigerant, after passing through the outlet of the compressor 11, forms a high-temperature, high-pressure gaseous refrigerant, which then enters the internal cooling condenser 12 to release heat in the passenger compartment. After passing through the refrigerant side of the refrigeration unit 13, it returns to the compressor 11. During its passage through the refrigerant side of the refrigeration unit 13, it can also exchange heat with the coolant on the water side of the refrigeration unit 13.

[0042] Combination Figure 2 As shown, the passenger compartment loop 10 also includes a heat exchanger 14. The refrigerant side of the compressor 11 and the heat exchanger 14 are connected in series with the refrigerant side of the refrigeration unit 13 to form a second air conditioning circulation loop 10b.

[0043] In this embodiment, within the second air conditioning circulation loop 10b, the refrigerant, after passing through the outlet of the compressor 11, forms a high-temperature, high-pressure gaseous refrigerant. It then enters the refrigerant side of the heat exchanger 14 to exchange heat with the coolant on the water side of the heat exchanger 14. After passing through the refrigerant side of the refrigerator 13, it returns to the compressor 11. During its passage through the refrigerant side of the refrigerator 13, it can also exchange heat with the coolant on the water side of the refrigerator 13.

[0044] Combination Figure 3 As shown, the passenger compartment circuit 10 also includes an evaporator 15 and a non-subcooled condenser 16. The compressor 11, the non-subcooled condenser 16 and the evaporator 15 are connected in series to form a third air conditioning circulation circuit 10c.

[0045] In this embodiment, in the third air conditioning circulation loop 10c, after the refrigerant passes through the outlet of the compressor 11, it will form a high-temperature and high-pressure gaseous refrigerant. Then it passes through the non-subcooled condenser 16 and exchanges heat with the air to cool down. Next, it enters the evaporator 15 and absorbs heat from the passenger compartment to reduce the temperature of the passenger compartment. Finally, it returns to the compressor 11.

[0046] Combination Figure 3 As shown, the compressor 11, the non-subcooled condenser 16 and the refrigerant side of the refrigeration unit 13 are connected in series to form the fourth air conditioning circulation loop 10d.

[0047] In this embodiment, within the fourth air conditioning circulation loop 10d, the refrigerant, after passing through the outlet of the compressor 11, forms a high-temperature and high-pressure gaseous refrigerant. It then passes through the non-subcooled condenser 16 and exchanges heat with the air to cool it down. Next, it enters the refrigerant side of the refrigerator 13 and exchanges heat with the coolant in the water side of the refrigerator 13. This facilitates the cooling of the battery pack assembly 31 or the electric drive module 21 by the flow of the coolant, and finally returns to the compressor 11.

[0048] Furthermore, combined Figures 1 to 3 As shown, the internal cooling condenser 12, the non-subcooling condenser 16, and the heat exchanger 14 are all connected in parallel.

[0049] It should be understood that when the internal cooling condenser 12, the non-subcooled condenser 16, and the heat exchanger 14 are all connected in parallel, the refrigerant from the outlet of the compressor 11 can simultaneously enter the internal cooling condenser 12 and the non-subcooled condenser 16, or simultaneously enter the internal cooling condenser 12 and the heat exchanger 14, or simultaneously enter the non-subcooled condenser 16 and the heat exchanger 14, or simultaneously enter the internal cooling condenser 12, the non-subcooled condenser 16, and the heat exchanger 14.

[0050] Combination Figures 1 to 3As shown, the crew compartment circuit 10 also includes a liquid storage bottle 19, which is located on the pipeline of the crew compartment circuit 10 for storing excess refrigerant on the crew compartment circuit 10 and replenishing refrigerant in the crew compartment circuit 10.

[0051] Combination Figure 8 As shown, the battery pack circuit 30 includes a battery pack assembly 31, which is connected in series with the water side of the chiller 13 to form a first battery pack circulation circuit 30a.

[0052] It should be understood that the battery pack assembly 31 includes a battery pack for powering the vehicle and a heat exchange plate for cooling the battery pack. The pipes in the battery pack circuit 30 for cooling or heating the battery pack are connected to the inlet or outlet of the heat exchange plate.

[0053] In this embodiment, within the first battery pack circulation loop 30a, the coolant exiting the battery pack assembly 31 can enter the water side of the refrigerator 13 to exchange heat with the refrigerant on the refrigerant side of the refrigerator 13, and finally return to the battery pack assembly 31.

[0054] Combination Figure 9 As shown, the battery pack assembly 31, the water side of the chiller 13 and the water side of the heat exchanger 14 are connected in series to form the second battery pack circulation loop 30b.

[0055] In this embodiment, within the second battery pack circulation loop 30b, the coolant exiting the battery pack assembly 31 can enter the water side of the chiller 13 to exchange heat with the refrigerant in the refrigerant side of the chiller 13, and then enter the water side of the heat exchanger 14 to exchange heat with the refrigerant in the refrigerant side of the heat exchanger 14, and finally return to the battery pack assembly 31.

[0056] Combination Figure 5 As shown, the electric drive circuit 20 includes an electric drive module 21, which is connected in series with the water side of the chiller 13 to form a first electric drive circulation circuit 20a. The electric drive module 21 may include a DC-DC converter, an on-board charger, a motor (which may include a front motor three-in-one and / or a rear motor three-in-one), a generator, a water-cooled intercooler, an intelligent driving domain control module, and a motor controller, etc.

[0057] In this embodiment, in the first electric drive circulation loop 20a, the coolant exiting the electric drive module 21 can enter the water side of the refrigerator 13 and exchange heat with the refrigerant on the refrigerant side of the refrigerator 13.

[0058] In this utility model, combined with Figures 1 to 5As shown, when the vehicle needs to heat the passenger compartment, the refrigerant in the first air conditioning circulation loop 10a forms a high-temperature, high-pressure gaseous refrigerant after passing through the outlet of the compressor 11. This gaseous refrigerant then enters the internal cooling condenser 12 to release heat in the passenger compartment, and finally returns to the compressor 11. Furthermore, when heating the passenger compartment, if the refrigerant temperature is still high after passing through the outlet of the internal cooling condenser 12, it can also enter the refrigerant side of the refrigeration unit 13 to exchange heat with the coolant on the water side of the refrigeration unit 13 before returning to the compressor 11. This heat is then used to heat the battery pack assembly 31 through the second battery pack circulation loop 30b. Therefore, this thermal management system can heat the passenger compartment loop 10 and the battery pack assembly 31 without the need for a PTC heating device.

[0059] Combination Figures 1 to 5 As shown, when the vehicle needs to heat the battery pack assembly 31, the refrigerant in the second air conditioning circulation loop 10b, after passing through the outlet of the compressor 11, forms a high-temperature, high-pressure gaseous refrigerant. This gaseous refrigerant then enters the refrigerant side of the heat exchanger 14 to exchange heat with the coolant on the water side of the heat exchanger 14 before returning to the compressor 11. The coolant on the water side of the heat exchanger 14, after being heated by the refrigerant on the refrigerant side of the heat exchanger 14, then circulates through the second battery pack circulation loop 30b to heat the battery pack assembly 31. Therefore, this thermal management system can heat the battery pack assembly 31 without a PTC heating device.

[0060] Combination Figures 1 to 5 As shown, when the vehicle needs to cool the passenger compartment, the refrigerant in the third air conditioning circulation loop 10c will form a high-temperature and high-pressure gaseous refrigerant after passing through the outlet of the compressor 11. Then it enters the non-subcooled condenser 16 to exchange heat with the air and cool down. Next, it enters the evaporator 15 and absorbs heat from the passenger compartment through the evaporator 15 to reduce the temperature of the passenger compartment.

[0061] Combination Figures 1 to 5 As shown, when the vehicle needs to cool the battery pack assembly 31, the refrigerant in the fourth air conditioning circulation loop 10d, after passing through the outlet of the compressor 11, forms a high-temperature, high-pressure gaseous refrigerant. This gaseous refrigerant then enters the non-subcooled condenser 16 to exchange heat with the air and thus cool down. It then enters the refrigerant side of the refrigeration unit 13 to exchange heat with the coolant on the water side before returning to the compressor 11. The coolant on the water side of the refrigeration unit 13, after being cooled by the refrigerant on the refrigerant side of the refrigeration unit 13, then circulates through the first battery pack circulation loop 30a to cool the battery pack assembly 31.

[0062] Combination Figures 1 to 5As shown, when the vehicle needs to cool the electric drive circuit 20, the refrigerant in the fourth air conditioning circulation circuit 10d, after passing through the outlet of the compressor 11, forms a high-temperature, high-pressure gaseous refrigerant. This gaseous refrigerant then enters the non-subcooled condenser 16 to exchange heat with the air and cool down. It then enters the refrigerant side of the refrigerator 13 to exchange heat with the coolant on the water side of the refrigerator 13 before returning to the compressor 11. The coolant on the water side of the refrigerator 13, after being cooled by the refrigerant on the refrigerant side of the refrigerator 13, circulates through the first electric drive circulation circuit 20a to cool the electric drive module 21.

[0063] Combination Figure 2 and Figure 3 As shown, the bypass pipe 17, compressor 11, and refrigerant side of the refrigeration unit 13 are connected in series to form the fifth air conditioning circulation loop 10e; wherein, any one of the three components, namely the internal cooling condenser 12, the non-subcooling condenser 16, and the heat exchanger 14, is connected in parallel with the bypass pipe 17.

[0064] In this embodiment, after the bypass pipe 17 is installed, the high-temperature, high-pressure gaseous refrigerant passing through the outlet of the compressor 11 can be divided into two parts. One part flows through the internal cooling condenser 12, the non-subcooled condenser 16, and / or the heat exchanger 14 to the refrigerant side of the refrigerator 13. The other part flows through the bypass pipe 17 to the refrigerant side of the refrigerator 13. Finally, the two parts of refrigerant merge at the inlet of the refrigerant side of the refrigerator 13 and enter the refrigerant side of the refrigerator 13, eventually returning to the compressor 11. In addition, after the bypass pipe 17 is installed, the high-temperature, high-pressure gaseous refrigerant passing through the outlet of the compressor 11 can also circulate directly in the fifth air conditioning circulation loop 10e to exchange heat with the coolant on the water side of the refrigerator 13.

[0065] In this embodiment, combined with Figure 4 As shown, the compressor 11, the internal cooling condenser 12 and the evaporator 15 are connected in series to form the sixth air conditioning circulation loop 10f.

[0066] In this embodiment, within the sixth air conditioning circulation loop 10f, the high-temperature and high-pressure gaseous refrigerant from the outlet of the compressor 11 can flow out through the internal cooling condenser 12, then enter the evaporator 15, and finally return to the compressor 11.

[0067] In this embodiment, combined with Figure 4 As shown, the compressor 11, the refrigerant side of the heat exchanger 14 and the evaporator 15 are connected in series to form the seventh air conditioning circulation loop 10g.

[0068] In this embodiment, within the seventh air conditioning circulation loop 10g, the high-temperature and high-pressure gaseous refrigerant from the outlet of the compressor 11 can flow out through the refrigerant side of the heat exchanger 14, then enter the evaporator 15, and finally return to the compressor 11.

[0069] Combination Figures 1 to 4 As shown, the passenger compartment circuit 10 also includes a first coaxial tube L1 and a second coaxial tube L2. The first coaxial tube L1 and the second coaxial tube L2 are connected to the third air conditioning circulation circuit 10c and are located at the inlet and outlet of the evaporator 15, respectively.

[0070] For example, the first coaxial tube L1 is located at the inlet of the evaporator 15, and the second coaxial tube L2 is located at the outlet of the evaporator 15.

[0071] Combination Figures 1 to 4 As shown, the first air conditioning circulation loop 10a and the second air conditioning circulation loop 10b are both spaced apart from the first coaxial tube L1; the first air conditioning circulation loop 10a and the second air conditioning circulation loop 10b are both spaced apart from the second coaxial tube L2.

[0072] In this embodiment, when the first air conditioning circulation loop 10a and the second air conditioning circulation loop 10b are both spaced apart from the first coaxial pipe L1 and spaced apart from the second coaxial pipe L2, that is, the outlet of the refrigerant side of the refrigerator 13 is directly connected to the inlet of the compressor 11 through the pipeline, the refrigerant passing through the first air conditioning circulation loop 10a and the second air conditioning circulation loop 10b can bypass the first coaxial pipe L1 and the second coaxial pipe L2, thereby making the outlet pressure of the refrigerant side of the refrigerator 13 and the inlet pressure of the compressor 11 close, and providing heat pump performance in ultra-low temperature environments and adapting to lower ambient temperatures.

[0073] In other embodiments, there can be two evaporators 15, namely a front evaporator and a rear evaporator. The front evaporator and the rear evaporator are connected in parallel between the first coaxial tube L1 and the second coaxial tube L2 to cool the front and rear areas of the passenger compartment, respectively. Correspondingly, the passenger compartment circuit 10 can also be equipped with a fan heater for heating the rear area of ​​the passenger compartment. The fan heater and the rear evaporator together form the rear air conditioning module 18.

[0074] Combination Figure 10 As shown, the battery pack assembly 31, the water side of the chiller 13, the electric drive module 21 and the water side of the heat exchanger 14 are connected in series to form a third battery pack circulation loop 30c.

[0075] In this embodiment, in the third battery pack circulation loop 30c, the coolant exiting the electric drive module 21 can sequentially pass through the water side of the heat exchanger 14, the battery pack assembly 31, and the water side of the refrigerator 13, and finally return to the electric drive module 21. The coolant in the third battery pack circulation loop 30c can exchange heat with the refrigerant on the refrigerant side of the heat exchanger 14 and the refrigerant side of the refrigerator 13, and can also exchange heat with the battery pack assembly 31.

[0076] Combination Figure 6 As shown, the electric drive circuit 20 also includes a radiator 22, and the electric drive module 21 is connected in series with the radiator 22 to form a second electric drive circulation circuit 20b. In addition, the electric drive circuit 20 also includes a water storage tank 25, which is connected to the pipeline between the radiator 22 and the electric drive module 21 for storing or replenishing the coolant in the electric drive circuit 20.

[0077] In this embodiment, in the second electric drive circulation loop 20b, the refrigerant passing through the outlet of the electric drive module 21 can enter the radiator 22 for cooling and then return to the electric drive module 21 to achieve cooling of the electric drive module 21.

[0078] Combination Figure 7 As shown, the electric drive module 21, the water side of the chiller 13 and the radiator 22 are connected in series to form a third electric drive circulation loop 20c.

[0079] In this embodiment, in the third electric drive circulation loop 20c, the refrigerant passing through the outlet of the electric drive module 21 can enter the water side of the chiller 13, and then flow back to the electric drive module 21 after passing through the radiator 22. Furthermore, when the radiator 22 is not working, or is not connected to the radiator 22, the refrigerant passing through the outlet of the electric drive module 21 can enter the water side of the chiller 13 and then directly flow back to the electric drive module 21.

[0080] Combination Figure 11 As shown, the battery pack assembly 31, the water side of the refrigerator 13, the radiator 22, the electric drive module 21 and the water side of the heat exchanger 14 are connected in series to form the fourth battery pack circulation loop 30d.

[0081] In this embodiment, in the fourth battery pack circulation loop 30d, the coolant exiting the electric drive module 21 can enter the water side of the heat exchanger 14, and then sequentially pass through the battery pack assembly 31, the water side of the refrigerator 13, and the radiator 22 before returning to the electric drive module 21. During this process, the coolant exiting the electric drive module 21 can exchange heat with the refrigerant on the refrigerant side of the heat exchanger 14 on the water side, and can also exchange heat with the battery pack assembly 31 when passing through it. Furthermore, it can exchange heat with the refrigerant on the refrigerant side of the refrigerator 13 when passing through the water side of the refrigerator 13, and finally, it can be cooled by the radiator 22.

[0082] Combination Figures 1 to 11 As shown, the electric drive circuit 20 also includes a first water pump 23 and a second water pump 24. The first water pump 23 is connected between the outlet of the radiator 22 and the inlet of the electric drive module 21; the second water pump 24 is connected between the outlet of the electric drive module 21 and the inlet of the radiator 22 (specifically, between the outlet of the electric drive module 21 and the fifth valve port of the seven-way valve 40).

[0083] In this embodiment, by setting a first water pump 23 and a second water pump 24 at the front and rear of the electric drive module 21 respectively, a dual water pump is formed. The dual water pump can adapt to lower ambient temperatures and meet the circulation flow of the coolant. Furthermore, the arrangement of the first water pump 23 (110W) and the second water pump 24 (110W) at the front and rear of the electric drive module 21 can effectively increase the flow rate by about 90%.

[0084] Combination Figures 1 to 11 As shown, the battery pack circuit 30 also includes a third water pump 32, which is connected between the battery pack assembly 31 and the heat exchanger 14.

[0085] For example, the third water pump 32 is located on the pipeline between the fourth valve port of the seven-way valve 40 and the heat exchanger 14.

[0086] Combination Figures 1 to 11 As shown, the passenger compartment circuit 10 also includes a first temperature and pressure sensor PT1, a second temperature and pressure sensor PT2, and a third temperature and pressure sensor PT3. The first temperature and pressure sensor PT1 is located at the outlet of the compressor 11 to detect the temperature and pressure of the refrigerant passing through the outlet of the compressor 11. The second temperature and pressure sensor PT2 is located at the inlet of the compressor 11 to detect the temperature and pressure of the refrigerant passing through the inlet of the compressor 11. The third temperature and pressure sensor PT3 is located at the outlet of the rear air conditioning module 18 to detect the temperature and pressure of the refrigerant passing through the outlet of the rear air conditioning module 18.

[0087] Combination Figures 1 to 11 As shown, the crew compartment loop 10 also includes a first temperature sensor T1, a second temperature sensor T2, and a third temperature sensor T3. The first temperature sensor T1 is connected to the inlet of the electric drive module 21 to detect the temperature of the coolant entering through the inlet of the electric drive module 21. The second temperature sensor T2 is connected to the inlet of the battery pack assembly 31 to detect the temperature of the coolant entering through the inlet of the battery pack assembly 31. The third temperature sensor T3 is connected to the outlet on the water side of the refrigerator 13 to detect the temperature of the coolant exiting through the water side of the refrigerator 13.

[0088] Combination Figures 1 to 11 As shown, the thermal management system also includes a seven-way valve 40, which includes a first valve port, a second valve port, a third valve port, a fourth valve port, a fifth valve port, a sixth valve port, and a seventh valve port; the first valve port is connected to the inlet of the electric drive module 21; the second valve port is connected to the water-side outlet of the chiller 13; the third valve port is connected to the inlet of the radiator 22; the fourth valve port is connected to the water-side inlet of the heat exchanger 14; the fifth valve port is connected to the outlet of the electric drive module 21; the sixth valve port is connected to the outlet of the battery pack assembly 31; and the seventh valve port is connected to the water-side inlet of the chiller 13.

[0089] It should be understood that after the seven-way valve 40 is set, different working modes of the thermal management system can be achieved by controlling each valve port of the seven-way valve 40.

[0090] Combination Figures 1 to 11 As shown, the thermal management system also includes a first control valve E1, a second control valve E2, a third control valve E3, a fourth control valve E4, a fifth control valve E5, a sixth control valve E6, and a seventh control valve E7. Specifically, the first control valve E1 is installed on the inlet pipe of the evaporator 15 to control the refrigerant entering the evaporator 15; the second control valve E2 is installed on the inlet pipe of the refrigerator 13 to control the refrigerant entering the refrigerator 13; the third control valve E3 is installed on the inlet pipe of the non-subcooled condenser 16 to control the refrigerant entering the non-subcooled condenser 16; the fourth control valve E4 is installed on the inlet pipe of the heat exchanger 14 to control the refrigerant entering the heat exchanger 14; the fifth control valve E5 is installed on the bypass pipe 17 to control the refrigerant entering the bypass pipe 17; the sixth control valve E6 is installed at the inlet of the rear air conditioning module 18 to control the refrigerant entering the rear air conditioning module 18; and the seventh control valve E7 is installed on the inlet pipe of the internal cooling condenser 12 to control the refrigerant entering the internal cooling condenser 12.

[0091] In this embodiment, the first control valve E1, the second control valve E2, the third control valve E3, the fourth control valve E4, the fifth control valve E5, the sixth control valve E6, and the seventh control valve E7 can all be electronic expansion valves.

[0092] In this utility model, combined with Figures 1 to 11 As shown, by coordinating the opening and closing of the seven-way valve 40 and the first to seventh control valves E7, as well as the start and stop of each component, multiple working modes of the thermal management system can be realized. This allows it to be compatible with R134a refrigerant and operate at temperatures down to -40℃. The pure heat pump can operate at -35℃ with a COP > 1 (energy saving). At the same time, the cost of the thermal management system is lower than that of a conventional thermal management system, saving the need for a PTC heating device. The thermal management system structure has no redundant design.

[0093] For example: when the sixth valve port of the seven-way valve 40 is connected to the fourth valve port, the second valve port is connected to the first valve port, the seventh valve port is connected to the fifth valve port, the other valve ports are disconnected, and the second control valve E2, the fifth control valve E5 and the seventh control valve E7 are open, the other control valves are closed, and the first to third water pumps 32 are not working: the heating of the passenger compartment can be achieved through the refrigerant circulation flow of the first air conditioning circulation loop 10a and the refrigerant circulation flow of the fifth air conditioning circulation loop 10e.

[0094] For example: when the sixth valve port of the seven-way valve 40 is connected to the fourth valve port, the second valve port is connected to the first valve port, the seventh valve port is connected to the fifth valve port, and the other valve ports are disconnected, and the second control valve E2, the fourth control valve E4, the fifth control valve E5 and the seventh control valve E7 are opened, the other control valves are closed, and the third water pump 32 is working, while the first water pump 23 and the second water pump 24 are not working: the passenger compartment can be heated through the refrigerant circulation of the first air conditioning circulation loop 10a and the refrigerant circulation of the fifth air conditioning circulation loop 10e; and the battery pack assembly 31 can be heated through the refrigerant circulation of the second air conditioning circulation loop 10b and the coolant circulation of the first battery pack circulation loop 30a.

[0095] For example: when the sixth and fourth valve ports of the seven-way valve 40 are connected, the second and third valve ports are connected, the seventh and fifth valve ports are connected, and the other valve ports are disconnected, and the second control valve E2 and the seventh control valve E7 are opened, the other control valves are closed, and the third water pump 32 is not working, while the first water pump 23 and the second water pump 24 are working: the heating of the passenger compartment can be achieved through the refrigerant circulation of the first air conditioning circulation loop 10a and the coolant circulation in conjunction with the third electric drive circulation loop 20c.

[0096] For example: when the sixth and fourth valve ports of the seven-way valve 40 are connected, the second and third valve ports are connected, the seventh and fifth valve ports are connected, and the other valve ports are disconnected, and the second control valve E2, the fourth control valve E4, and the seventh control valve E7 are opened, the other control valves are closed, and the first water pump 23, the second water pump 24, and the third water pump 32 are working: the passenger compartment can be heated by the refrigerant circulation of the first air conditioning circulation loop 10a and the coolant circulation of the third electric drive circulation loop 20c; and the battery pack assembly 31 can be heated by the refrigerant circulation of the second air conditioning circulation loop 10b and the coolant circulation of the first battery pack circulation loop 30a.

[0097] For example: when the sixth valve port of the seven-way valve 40 is connected to the fourth valve port, the second valve port is connected to the first valve port, the seventh valve port is connected to the fifth valve port, the other valve ports are disconnected, and the second control valve E2 and the seventh control valve E7 are opened, the other control valves are closed, and the third water pump 32 is not working, while the first water pump 23 and the second water pump 24 are working: the heating of the passenger compartment can be achieved through the refrigerant circulation of the first air conditioning circulation loop 10a and the coolant circulation in conjunction with the first electric drive circulation loop 20a.

[0098] For example: when the sixth valve port of the seven-way valve 40 is connected to the fourth valve port, the second valve port is connected to the first valve port, the seventh valve port is connected to the fifth valve port, and the other valve ports are disconnected, and the second control valve E2, the fourth control valve E4 and the seventh control valve E7 are opened, the other control valves are closed, and the first water pump 23, the second water pump 24 and the third water pump 32 are working: the crew compartment can be heated by the refrigerant circulation of the first air conditioning circulation loop 10a and the coolant circulation of the first electric drive circulation loop 20a; and the battery pack assembly 31 can be heated by the refrigerant circulation of the second air conditioning circulation loop 10b and the coolant circulation of the first battery pack circulation loop 30a.

[0099] For example: when the sixth valve port of the seven-way valve 40 is connected to the fourth valve port, the second valve port is connected to the third valve port, the seventh valve port is connected to the fifth valve port, and the other valve ports are disconnected, and the first control valve E1, the second control valve E2 and the seventh control valve E7 are opened, the other control valves are closed, and the third water pump 32 is not working, while the second water pump 24 and the third water pump 32 are working: the dehumidification function of the passenger cabin in a low-temperature environment can be achieved through the refrigerant circulation flow of the sixth air conditioning circulation loop 10f and the coolant circulation flow of the third electric drive circulation loop 20c.

[0100] For example: when the sixth and seventh valve ports of the seven-way valve 40 are connected, the fifth and fourth valve ports are connected, the second and third valve ports are connected, and the other valve ports are disconnected, and the first control valve E1, the third control valve E3 and the seventh control valve E7 are open, the other control valves are closed, and the third water pump 32 is working, while the first water pump 23 and the second water pump 24 are not working: the dehumidification function of the passenger cabin under high temperature environment can be achieved through the refrigerant circulation flow of the sixth air conditioning circulation loop 10f, the refrigerant circulation flow of the seventh air conditioning circulation loop 10g and the coolant circulation flow of the fourth battery pack circulation loop 30d.

[0101] For example: when the sixth and seventh valve ports of the seven-way valve 40 are connected, the fifth and fourth valve ports are connected, the second and third valve ports are connected, and the other valve ports are disconnected, and the first control valve E1, the third control valve E3 and the sixth control valve E6 are opened, the other control valves are closed, and the first water pump 23, the second water pump 24 and the third water pump 32 are working: the occupant cabin can be cooled by the refrigerant circulating through the third air conditioning circulation loop 10c.

[0102] For example: when the sixth and seventh ports of the seven-way valve 40 are connected, the second and fourth ports are connected, the fifth and third ports are connected, and the other ports are disconnected, and the first control valve E1, the second control valve E2, the third control valve E3, and the sixth control valve E6 are open, while the other control valves are closed, and the first water pump 23, the second water pump 24, and the third water pump 32 are operating: the passenger compartment can be cooled through the refrigerant circulation in the third air conditioning circulation loop 10c. The passenger compartment can be cooled through the refrigerant circulation in the third air conditioning circulation loop 10c, and the refrigerant circulation in the fourth air conditioning circulation loop 10d, in conjunction with the coolant circulation in the first battery pack circulation loop 30a, can cool the battery.

[0103] For example: when the sixth and seventh valve ports of the seven-way valve 40 are connected, the second and fourth valve ports are connected, the fifth and third valve ports are connected, and the other valve ports are disconnected, and the second control valve E2 and the third control valve E3 are opened, the other control valves are closed, and the first water pump 23, the second water pump 24 and the third water pump 32 are working: the refrigerant circulation of the fourth air conditioning circulation loop 10d and the coolant circulation of the first battery pack circulation loop 30a can be combined to achieve individual cooling of the battery.

[0104] In summary, the thermal management system of this utility model can soon achieve cooling of the passenger compartment, electric drive module 21 and battery pack assembly 31 through multiple modes, and can heat the passenger compartment and battery pack assembly 31 without the need for a PTC heating device.

[0105] This embodiment also provides a vehicle, including a frame and the aforementioned thermal management system, the thermal management system being connected to the frame.

[0106] For other aspects of the vehicle's structure, please refer to existing technology; details will not be elaborated here.

[0107] In this application, unless otherwise expressly specified and limited, the terms "assembly," "connection," 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 or an electrical connection; 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. Those skilled in the art can understand the specific meaning of the above terms in this application according to the specific circumstances.

[0108] 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 one or more of that feature. "A plurality of" means two or more, unless otherwise explicitly specified. The terms "some embodiments," "exemplarily," etc., indicate that a specific feature, structure, material, or characteristic described in connection with that embodiment or example is included in at least one embodiment or example of this application.

[0109] The illustrative expressions of the terms used above do not necessarily refer to the same embodiments or examples. Furthermore, the specific features, structures, materials, or characteristics described may be combined in any suitable manner in one or more embodiments or examples. Moreover, those skilled in the art can combine and integrate the different embodiments or examples described herein, as well as the features of those different embodiments or examples, without contradiction.

[0110] Although embodiments of this application have been shown and described above, it should be understood that the above embodiments are exemplary and should not be construed as limiting this application. Those skilled in the art can make changes, modifications, substitutions and variations to the above embodiments within the scope of this application. Therefore, any changes or modifications made in accordance with the claims and description of this application should fall within the scope of the patent coverage of this application.

Claims

1. A thermal management system, characterized in that, include: The system comprises a compressor, an internal cooling condenser, a non-subcooling condenser, a heat exchanger, an evaporator, and a refrigeration unit. The compressor, the internal cooling condenser, and the refrigeration unit are connected in series on the refrigerant side to form a first air conditioning circulation loop. The compressor, the heat exchanger, and the refrigeration unit are connected in series on the refrigerant side to form a second air conditioning circulation loop. The compressor, the non-subcooling condenser, and the evaporator are connected in series on the evaporator to form a third air conditioning circulation loop. The compressor, the non-subcooling condenser, and the refrigeration unit are connected in series on the refrigerant side to form a fourth air conditioning circulation loop. The internal cooling condenser, the non-subcooling condenser, and the heat exchanger are all connected in parallel. It also includes a battery pack assembly, which is connected in series with the water side of the chiller to form a first battery pack circulation loop; the battery pack assembly, the water side of the chiller, and the water side of the heat exchanger are connected in series to form a second battery pack circulation loop. It also includes an electric drive module, which is connected in series with the water side of the chiller to form a first electric drive circulation loop.

2. The thermal management system according to claim 1, characterized in that, It also includes a bypass pipeline, wherein the compressor, the bypass pipeline, and the refrigerant side of the refrigeration unit are connected in series to form a fifth air conditioning circulation loop; wherein, The piping of any one of the three components—the internal cooling condenser, the non-subcooling condenser, and the heat exchanger—is connected in parallel with the bypass piping.

3. The thermal management system according to claim 1, characterized in that, It also includes a first coaxial tube and a second coaxial tube, the first coaxial tube and the second coaxial tube being connected to the third air conditioning circulation loop and located at the inlet and outlet of the evaporator, respectively; The first air conditioning circulation loop and the second air conditioning circulation loop are both spaced apart from the first coaxial tube; The first air conditioning circulation loop and the second air conditioning circulation loop are both spaced apart from the second coaxial tube.

4. The thermal management system according to claim 1, characterized in that, The battery pack assembly, the water side of the chiller, the electric drive module, and the water side of the heat exchanger are connected in series to form a third battery pack circulation loop.

5. The thermal management system according to claim 1, characterized in that, It also includes a heat sink, and the electric drive module is connected in series with the heat sink to form a second electric drive circulation loop.

6. The thermal management system according to claim 5, characterized in that, The electric drive module, the water side of the chiller, and the radiator are connected in series to form a third electric drive circulation loop.

7. The thermal management system according to claim 5, characterized in that, The battery pack assembly, the water side of the chiller, the radiator, the electric drive module, and the water side of the heat exchanger are connected in series to form a fourth battery pack circulation loop.

8. The thermal management system according to claim 5, characterized in that, It also includes a first water pump and a second water pump, wherein the first water pump is connected between the outlet of the radiator and the inlet of the electric drive module; and the second water pump is connected between the outlet of the electric drive module and the inlet of the radiator.

9. The thermal management system according to claim 5, characterized in that, The thermal management system also includes a seven-way valve, which includes a first valve port, a second valve port, a third valve port, a fourth valve port, a fifth valve port, a sixth valve port, and a seventh valve port; The first valve port is connected to the inlet of the electric drive module; The second valve port is connected to the water-side outlet of the chiller; The third valve port is connected to the inlet of the radiator; The fourth valve port is connected to the water-side inlet of the heat exchanger; The fifth valve port is connected to the outlet of the electric drive module; The sixth valve port is connected to the outlet of the battery pack assembly; The seventh valve port is connected to the water-side inlet of the refrigeration unit.

10. A vehicle, characterized in that, It includes a frame and a thermal management system as described in any one of claims 1-9, wherein the thermal management system is connected to the frame.

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