Automobile thermal management system and automobile

Abstract

The invention relates to the technical field of automobile thermal management, in particular to an automobile thermal management system and an automobile. The automobile thermal management system comprises a refrigerant loop system and a water loop system. The refrigerant loop system comprises a compressor, a condenser, a gas-liquid separator integrated coaxial tube device, a first vortex tube, a second vortex tube, an evaporator, a battery cooler and an energy recoverer; the outlet end of the gas-liquid separator integrated coaxial tube device is communicated with a first vortex tube and a second vortex tube, a low-temperature refrigerant outlet of the first vortex tube is communicated with an evaporator, and a low-temperature refrigerant outlet of the second vortex tube is communicated with a battery cooler. A high-temperature refrigerant outlet of the first vortex tube and a high-temperature refrigerant outlet of the second vortex tube are both communicated with an energy recoverer, and an outlet of the energy recoverer is communicated with an air suction port of the compressor through the gas-liquid separator integrated coaxial tube device. According to the automobile thermal management system, energy loss in the throttling process can be reduced, and the refrigerating and heating performance is improved.

Description

Technical Field

[0001] The present invention relates to the technical field of automotive thermal management, and particularly to an automotive thermal management system and an automobile. Background Art

[0002] With the continuous development of automotive thermal management technology, the environmental protection of air-conditioning refrigerants and the system performance have always been the core directions of technological development. As a mainstream natural and environmentally friendly refrigerant, carbon dioxide refrigerant (R744) is regarded as an ideal refrigerant medium at present because of its zero ozone depletion potential and low global warming potential.

[0003] However, the expansion valve in the current automotive thermal management system cannot effectively recover the energy loss during the throttling process in the R744 transcritical cycle, thereby reducing the overall efficiency of the automotive thermal management system. At the same time, the current automotive thermal management system has insufficient refrigeration performance under high-temperature conditions and is difficult to meet the heat dissipation requirements of the passenger compartment and the battery.

[0004] Therefore, it is urgent to design an automotive thermal management system and an automobile to solve the above technical problems. Summary of the Invention

[0005] The purpose of the present invention is to provide an automotive thermal management system and an automobile, which can reduce the energy loss during the throttling process and improve the refrigeration and heating performance.

[0006] To achieve this purpose, the present invention adopts the following technical solutions:

[0007] On the one hand, the present invention provides an automotive thermal management system, including:

[0008] A refrigerant circuit system, the refrigerant circuit system includes a compressor, a condenser, a gas-liquid separator integrated coaxial tube device, a first vortex tube, a second vortex tube, an evaporator, a battery cooler, and an energy recovery device; wherein, the compressor, the condenser, and the gas-liquid separator integrated coaxial tube device are connected in sequence, the outlet end of the gas-liquid separator integrated coaxial tube device is respectively connected to the first vortex tube and the second vortex tube, the low-temperature refrigerant outlet of the first vortex tube is connected to the evaporator, the low-temperature refrigerant outlet of the second vortex tube is connected to the battery cooler, the high-temperature refrigerant outlets of the first vortex tube and the second vortex tube are both connected to the energy recovery device, and the outlet of the energy recovery device is connected to the suction port of the compressor through the gas-liquid separator integrated coaxial tube device;

[0009] A water circuit system, the water circuit system exchanges heat with the refrigerant circuit system through the evaporator, the battery cooler, and the condenser.

[0010] As an alternative technical solution for an automotive thermal management system, the integrated coaxial tube device of the gas-liquid separator has a first inlet, a first outlet, a second inlet, and a second outlet; the first inlet is communicated with the outlet end of the condenser, the first outlet is communicated in parallel with the inlet ends of the first vortex tube and the second vortex tube, the low-temperature refrigerant outlet of the first vortex tube is connected to the inlet end of the evaporator, the low-temperature refrigerant outlet of the second vortex tube is connected to the inlet end of the battery cooler, the outlet ends of the evaporator, the battery cooler, and the energy recovery device are all communicated with the second inlet of the integrated coaxial tube device of the gas-liquid separator, and the second outlet is communicated with the suction port of the compressor.

[0011] As an alternative technical solution for an automotive thermal management system, the automotive thermal management system includes a refrigeration mode and a heating mode.

[0012] As an alternative technical solution for an automotive thermal management system, the refrigerant circuit system further includes a blower, the blower is arranged on one side of the evaporator, and in the refrigeration mode, the blower is used to generate flowing air and exchange heat with the evaporator to deliver the cooling capacity generated by the evaporator to the passenger compartment.

[0013] As an alternative technical solution for an automotive thermal management system, the water circuit system includes a three-way valve, a second five-way valve, a low-temperature radiator, a motor assembly, a first water pump, a first five-way valve, and a second water pump;

[0014] In the refrigeration mode, the water side outlet of the condenser is sequentially communicated with the three-way valve, the second five-way valve, the low-temperature radiator, the motor assembly, the first water pump, the first five-way valve, and the second water pump, and the second water pump is sequentially communicated with the energy recovery device and the water side inlet of the condenser to form a first cooling circuit.

[0015] As an alternative technical solution for an automotive thermal management system, the water circuit system further includes a fan, the fan is arranged on one side of the low-temperature radiator, and the fan is configured to dissipate heat from the low-temperature radiator.

[0016] As an alternative technical solution for an automotive thermal management system, the water circuit system includes a battery pack assembly, a first five-way valve, a heater, a second five-way valve, and a third water pump;

[0017] In the refrigeration mode, the outlet of the battery pack assembly is sequentially communicated with the first five-way valve, the heater, the battery cooler, the second five-way valve, and the third water pump, and the third water pump is communicated with the inlet of the battery pack assembly to form a second cooling circuit.

[0018] As an alternative technical solution of an automotive thermal management system, the water circuit system includes a three-way valve, a heater core, a second water pump, a second five-way valve, a third water pump, a battery pack assembly, and a first five-way valve;

[0019] In the heating mode, the water side outlet of the condenser is connected to the three-way valve. One outlet of the three-way valve is sequentially connected to the heater core, the second water pump, and the energy recovery device. The outlet of the energy recovery device is connected to the water side inlet of the condenser. The other outlet of the three-way valve is sequentially connected to the second five-way valve, the third water pump, the battery pack assembly, the first five-way valve, and the second water pump, so that the medium flowing out of the first five-way valve and the medium flowing out of the heater core converge and are then driven by the second water pump into the energy recovery device to form a first heating circuit.

[0020] As an alternative technical solution of an automotive thermal management system, the water circuit system includes a second five-way valve, a low-temperature radiator, a motor assembly, a first water pump, a first five-way valve, and a heater;

[0021] In the heating mode, the outlet of the battery cooler is sequentially connected to the second five-way valve, the low-temperature radiator, the motor assembly, the first water pump, the first five-way valve, and the heater, and the heater is connected to the inlet of the battery cooler to form a second heating circuit.

[0022] On the other hand, the present invention also provides an automobile, which includes the above-mentioned automotive thermal management system.

[0023] The beneficial effects of the present invention at least include:

[0024] The present invention provides an automotive thermal management system, which includes a refrigerant circuit system and a water circuit system. Among them, the refrigerant circuit system includes a compressor, a condenser, a gas-liquid separator integrated coaxial tube device, a first vortex tube, a second vortex tube, an evaporator, a battery cooler, and an energy recovery device. Among them, the compressor, the condenser, and the gas-liquid separator integrated coaxial tube device are sequentially connected. The outlet end of the gas-liquid separator integrated coaxial tube device is respectively connected to the first vortex tube and the second vortex tube. The low-temperature refrigerant outlet of the first vortex tube is connected to the evaporator, and the low-temperature refrigerant outlet of the second vortex tube is connected to the battery cooler. The high-temperature refrigerant outlets of the first vortex tube and the second vortex tube are both connected to the energy recovery device, and the outlet of the energy recovery device is connected to the suction port of the compressor through the gas-liquid separator integrated coaxial tube device. The water circuit system exchanges heat with the refrigerant circuit system through the evaporator, the battery cooler, and the condenser.

[0025] As described above, the automotive thermal management system in the present invention can effectively recover the energy loss during the throttling process by adopting the first vortex tube and the second vortex tube, reduce the irreversible loss of the automotive thermal management system, and improve the working efficiency. The first vortex tube and the second vortex tube are used to separate the refrigerant into high-temperature refrigerant, low-temperature saturated gas refrigerant and low-temperature saturated liquid refrigerant. The low-temperature saturated gas refrigerant and the low-temperature saturated liquid refrigerant respectively absorb heat by evaporation in the evaporator and the battery cooler, realizing the refrigeration of the passenger compartment and the cooling of the battery; the high-temperature refrigerant recovers heat in the energy recovery device, realizing the reuse of energy, thereby improving the refrigeration and heating performance of the automotive thermal management system.

[0026] The present invention also provides an automobile, which has a high energy utilization efficiency, can improve the refrigeration and heating performance, reduce energy consumption, and realize the energy-saving operation of the automobile. BRIEF DESCRIPTION OF THE DRAWINGS

[0027] In order to more clearly illustrate the technical solutions in the embodiments of the present invention, the following will briefly introduce the drawings required for describing the embodiments of the present invention. Obviously, the drawings in the following description are only some embodiments of the present invention. For those of ordinary skill in the art, without creative efforts, other drawings can also be obtained according to the content of the embodiments of the present invention and these drawings.

[0028] Figure 1 is a schematic flow chart of the refrigerant circuit system provided by the embodiment of the present invention;

[0029] Figure 2 is a schematic flow chart of the automotive thermal management system provided by the embodiment of the present invention in the refrigeration mode;

[0030] Figure 3 is a schematic flow chart of the automotive thermal management system provided by the embodiment of the present invention in the heating mode.

[0031] REFERENCE NUMERALS

[0032] 1. Compressor; 2. Condenser; 3. Gas-liquid separator integrated coaxial tube device; 4. First vortex tube; 5. Battery cooler; 6. Second vortex tube; 7. Evaporator; 8. Energy recovery device; 9. Heater core; 10. First water pump; 11. Battery pack assembly; 12. Heater; 13. First five-way valve; 14. Second five-way valve; 15. Second water pump; 16. Third water pump; 17. Three-way valve; 18. Motor assembly; 19. Fan; 20. Low-temperature radiator tank. DETAILED DESCRIPTION OF THE EMBODIMENTS

[0033] To make the objectives, technical solutions, and advantages of the embodiments of the present invention clearer, the technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are some, but not all, of the embodiments of the present invention. Components of the embodiments of the present invention usually described and illustrated in the accompanying drawings here can be arranged and designed in various different configurations.

[0034] Therefore, the following detailed description of the embodiments of the present invention provided in the accompanying drawings is not intended to limit the scope of the claimed invention, but merely represents selected embodiments of the present invention. All other embodiments obtained by those of ordinary skill in the art based on the embodiments of the present invention without creative efforts fall within the scope of protection of the present invention.

[0035] It should be noted that like reference numerals and letters denote like items in the following drawings. Therefore, once an item is defined in one drawing, it does not need to be further defined and explained in subsequent drawings.

[0036] In the description of the present invention, it should be noted that the orientation or positional relationship indicated by the terms "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer", etc. is based on the orientation or positional relationship shown in the accompanying drawings, or the orientation or positional relationship in which the product of the invention is usually placed during use. It is only for the convenience of describing the present invention and simplifying the description, and does not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of the present invention. In addition, the terms "first", "second", "third", etc. are only used for descriptive distinction and cannot be understood as indicating or implying relative importance. In the description of the present invention, unless otherwise specified, the meaning of "plurality" is two or more.

[0037] In the description of the present invention, it should also be noted that unless otherwise clearly defined and limited, the terms "set" and "connect" should be understood in a broad sense. For example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection. For those of ordinary skill in the art, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0038] In the present invention, unless otherwise clearly specified or limited, the first feature being "on" or "under" the second feature may include direct contact between the first and second features, or may include indirect contact between the first and second features through additional features therebetween. Moreover, the first feature being "above", "over" and "on top of" the second feature includes the first feature being directly above and obliquely above the second feature, or merely indicating that the first feature has a higher horizontal height than the second feature. The first feature being "under", "beneath" and "underneath" the second feature includes the first feature being directly below and obliquely below the second feature, or merely indicating that the first feature has a lower horizontal height than the second feature.

[0039] Embodiments of the present invention will be described in detail below. Examples of the embodiments are shown in the accompanying drawings, where like or similar reference numerals denote like or similar elements or elements having the same or similar functions throughout. The embodiments described below with reference to the accompanying drawings are exemplary only for explaining the present invention and should not be construed as limiting the present invention.

[0040] This embodiment provides an automotive thermal management system and an automobile, which can reduce energy loss during the throttling process and improve refrigeration and heating performance.

[0041] As Figures 1-3 shown, the automotive thermal management system mainly includes a refrigerant circuit system and a water circuit system. Among them, the refrigerant circuit system includes a compressor 1, a condenser 2, a gas-liquid separator integrated coaxial tube device 3, a first vortex tube 4, a second vortex tube 6, an evaporator 7, a battery cooler 5, and an energy recovery device 8. Among them, the compressor 1, the condenser 2, and the gas-liquid separator integrated coaxial tube device 3 are connected in sequence. The outlet end of the gas-liquid separator integrated coaxial tube device 3 is respectively connected to the first vortex tube 4 and the second vortex tube 6. The low-temperature refrigerant outlet of the first vortex tube 4 is connected to the evaporator 7, and the low-temperature refrigerant outlet of the second vortex tube 6 is connected to the battery cooler 5. The high-temperature refrigerant outlets of the first vortex tube 4 and the second vortex tube 6 are both connected to the energy recovery device 8. The outlet of the energy recovery device 8 is connected to the suction port of the compressor 1 through the gas-liquid separator integrated coaxial tube device 3. The water circuit system exchanges heat with the refrigerant circuit system through the evaporator 7, the battery cooler 5, and the condenser 2.

[0042] Based on the above design, in this embodiment, the low-temperature saturated gas refrigerant is sucked in from the suction port of the compressor 1, and after compression, it becomes a high-temperature and high-pressure gaseous refrigerant and is discharged. The high-temperature and high-pressure gaseous refrigerant enters the condenser 2 and exchanges heat with the cooling medium in the external environment or the water circuit system. After part of the high-temperature and high-pressure gaseous refrigerant releases heat, it condenses into a high-temperature and high-pressure liquid refrigerant. After flowing out of the condenser 2, the refrigerant enters the gas-liquid separator integrated coaxial tube device 3, which separates the gaseous and liquid refrigerants to ensure that the subsequent components can obtain the refrigerant in a suitable state. The separated refrigerant enters the first vortex tube 4 and the second vortex tube 6. Inside the first vortex tube 4 or the second vortex tube 6, the refrigerant is separated into three parts due to the action of centrifugal force and pressure difference: a stream of high-temperature refrigerant, a stream of low-temperature saturated gas refrigerant, and a stream of low-temperature saturated liquid refrigerant. The low-temperature refrigerant (low-temperature saturated gas refrigerant and low-temperature saturated liquid refrigerant) has a lower temperature and can absorb more heat during the subsequent evaporation process, improving the refrigeration effect.

[0043] Specifically, the low-temperature saturated gas refrigerant and the low-temperature saturated liquid refrigerant flow into the evaporator 7 and the battery cooler 5 respectively. In the evaporator 7, the low-temperature saturated gas refrigerant absorbs the heat of the air in the passenger compartment and evaporates into a low-temperature and low-pressure gaseous refrigerant, thus realizing the refrigeration of the passenger compartment; in the battery cooler 5, the low-temperature saturated liquid refrigerant absorbs the heat of the battery and also evaporates into a low-temperature and low-pressure gaseous refrigerant, realizing the cooling of the battery.

[0044] The high-temperature refrigerants separated by the first vortex tube 4 and the second vortex tube 6 both flow into the energy recovery device 8, where they exchange heat with the medium in the water circuit system, transferring the heat to the medium (water or antifreeze) in the water circuit system to realize the recovery and utilization of heat. After the heat recovery, the temperature of the high-temperature refrigerant decreases and becomes a low-temperature and low-pressure gaseous refrigerant.

[0045] The three parts of the low-temperature and low-pressure gaseous refrigerant after passing through the evaporator 7, the battery cooler 5, and the energy recovery device 8 converge, and after passing through the gas-liquid separator integrated coaxial tube device 3, they enter the suction port of the compressor 1 to complete the refrigerant cycle.

[0046] Compared with the prior art, the automotive thermal management system in this embodiment can effectively recover the energy loss during the throttling process by using the first vortex tube 4 and the second vortex tube 6, reduce the irreversible loss of the automotive thermal management system, and improve the working efficiency. By using the first vortex tube 4 and the second vortex tube 6 to separate the refrigerant into high-temperature refrigerant, low-temperature saturated gas refrigerant, and low-temperature saturated liquid refrigerant, the low-temperature saturated gas refrigerant and the low-temperature saturated liquid refrigerant respectively evaporate and absorb heat in the evaporator 7 and the battery cooler 5 to realize the refrigeration of the passenger compartment and the cooling of the battery; the high-temperature refrigerant recovers heat in the energy recovery device 8 to realize the reuse of energy, thereby improving the refrigeration and heating performance of the automotive thermal management system.

[0047] Optionally, the medium flowing in the water circuit system in this embodiment can be set as water, antifreeze, coolant, etc.

[0048] The medium flowing in the refrigerant circuit system in this embodiment is set as carbon dioxide refrigerant (R744).

[0049] The gas-liquid separator integrated coaxial tube device 3 in this embodiment has a first inlet, a first outlet, a second inlet and a second outlet; the first inlet is communicated with the outlet end of the condenser 2, the first outlet is communicated in parallel with the inlet ends of the first vortex tube 4 and the second vortex tube 6, the low-temperature refrigerant outlet of the first vortex tube 4 is connected with the inlet end of the evaporator 7, the low-temperature refrigerant outlet of the second vortex tube 6 is connected with the inlet end of the battery cooler 5, the outlet ends of the evaporator 7, the battery cooler 5 and the energy recovery device 8 are all communicated with the second inlet of the gas-liquid separator integrated coaxial tube device 3, and the second outlet is communicated with the suction port of the compressor 1.

[0050] Through the reasonable design of the first inlet, the first outlet, the second inlet and the second outlet of the gas-liquid separator integrated coaxial tube device 3, the flow direction of the refrigerant is clarified, ensuring the orderly flow of the refrigerant between each component, and improving the stability and reliability of the vehicle thermal management system. The first outlet is communicated in parallel with the first vortex tube 4 and the second vortex tube 6, enabling the refrigerant to enter the first vortex tube 4 and the second vortex tube 6 simultaneously for energy separation, and improving the refrigeration and heating efficiency of the vehicle thermal management system. The outlet ends of the evaporator 7, the battery cooler 5 and the energy recovery device 8 are all communicated with the second inlet of the gas-liquid separator integrated coaxial tube device 3, realizing the centralized recovery of the refrigerant, ensuring that the refrigerant can be fully recycled, and improving the operation efficiency of the vehicle thermal management system.

[0051] It should be noted that the gas-liquid separator integrated coaxial tube device 3, the first vortex tube 4 and the second vortex tube 6 in this embodiment are all common components on the market, so the specific structures and working principles of the three are not described in detail in this embodiment.

[0052] As Figures 2-3 shown, the vehicle thermal management system in this embodiment includes a refrigeration mode and a heating mode. The refrigeration mode and the heating mode can meet the thermal management requirements of the vehicle in different seasons and different ambient temperatures, and improve the comfort of the passenger compartment and the working efficiency of components such as the battery and the motor.

[0053] Specifically, the refrigerant circuit system further includes a blower, which is arranged on one side of the evaporator 7. In the refrigeration mode, the blower is used to generate flowing air and exchange heat with the evaporator 7 to deliver the cooling capacity generated by the evaporator 7 to the passenger compartment. The flowing air generated by the blower exchanges heat with the evaporator 7, efficiently delivering the cooling capacity generated by the evaporator 7 to the passenger compartment, improving the refrigeration effect in the passenger compartment, rapidly reducing the temperature in the passenger compartment, and enhancing the comfort of the occupants. The setting of the blower promotes the air circulation in the passenger compartment, enabling the cold air to be evenly distributed throughout the passenger compartment, avoiding excessive high or low local temperatures, and improving the temperature uniformity in the passenger compartment.

[0054] As Figure 2 shown, the water circuit system includes a three-way valve 17, a second five-way valve 14, a low-temperature radiator 20, a motor assembly 18, a first water pump 10, a first five-way valve 13, and a second water pump 15. In the refrigeration mode, the water-side outlet of the condenser 2 is sequentially connected to the three-way valve 17, the second five-way valve 14, the low-temperature radiator 20, the motor assembly 18, the first water pump 10, the first five-way valve 13, and the second water pump 15, and the second water pump 15 is sequentially connected to the energy recovery device 8 and the water-side inlet of the condenser 2 to form a first cooling circuit. The first cooling circuit is mainly used for dissipating heat from the motor and simultaneously realizing waste heat recovery.

[0055] The high-temperature coolant of the condenser 2 sequentially flows through the three-way valve 17, the second five-way valve 14, the low-temperature radiator 20, the motor assembly 18, the first water pump 10, the first five-way valve 13, and the second water pump 15, and finally returns to the condenser 2. The low-temperature radiator 20 is used for dissipating heat from the coolant. The cooled coolant flows into the motor assembly 18 to effectively dissipate heat from the motor assembly 18, ensuring stable operation under high-temperature conditions. The second water pump 15 delivers the coolant to the energy recovery device 8, and the coolant exchanges heat with the high-temperature refrigerant in the refrigerant circuit in the energy recovery device 8, absorbing the heat of the refrigerant, thereby realizing waste heat recovery and improving the energy utilization efficiency of the system.

[0056] Furthermore, the water circuit system further includes a fan 19, which is arranged on one side of the low-temperature radiator 20. The fan 19 is configured to dissipate heat from the low-temperature radiator 20. The fan 19 performs forced convection heat dissipation on the low-temperature radiator 20, accelerating the heat dissipation of the coolant in the tank to the environment, improving the heat dissipation efficiency of the low-temperature radiator 20, ensuring that the coolant can be quickly cooled, and thus more effectively cooling the motor assembly 18 and the condenser 2, enhancing the heat dissipation performance of the vehicle thermal management system.

[0057] As Figure 2As shown in the figure, the water circuit system in this embodiment further includes a battery pack assembly 11, a first five-way valve 13, a heater 12, a second five-way valve 14, and a third water pump 16. In the refrigeration mode, the outlet of the battery pack assembly 11 is sequentially connected to the first five-way valve 13, the heater 12, the battery cooler 5, the second five-way valve 14, and the third water pump 16, and the third water pump 16 is connected to the inlet of the battery pack assembly 11 to form a second cooling circuit. The second cooling circuit is mainly used to dissipate heat from the battery pack assembly 11 and simultaneously recover waste heat.

[0058] Specifically, after the high-temperature coolant of the battery pack assembly 11 flows out, it sequentially passes through the first five-way valve 13, the heater 12, and the battery cooler 5. The coolant exchanges heat with the refrigerant in the battery cooler 5, and the refrigerant evaporates and absorbs heat, reducing the temperature of the coolant, achieving heat dissipation of the battery pack assembly 11, ensuring that the battery operates at an appropriate temperature, and improving battery performance and lifespan.

[0059] It should be noted that in the refrigeration mode of the vehicle thermal management system, the heater 12 does not work.

[0060] As Figure 3 shown in the figure, the water circuit system in this embodiment includes a three-way valve 17, a heater core 9, a second water pump 15, a second five-way valve 14, a third water pump 16, a battery pack assembly 11, and a first five-way valve 13. In the heating mode, the water-side outlet of the condenser 2 is connected to the three-way valve 17. One outlet of the three-way valve 17 is sequentially connected to the heater core 9, the second water pump 15, and the energy recovery device 8, and the outlet of the energy recovery device 8 is connected to the water-side inlet of the condenser 2. The other outlet of the three-way valve 17 is sequentially connected to the second five-way valve 14, the third water pump 16, the battery pack assembly 11, the first five-way valve 13, and the second water pump 15, so that the medium flowing out of the first five-way valve 13 and the medium flowing out of the heater core 9 converge and are jointly driven by the second water pump 15 into the energy recovery device 8 to form a first heating circuit. The first heating circuit is mainly used to meet the heating requirements of the passenger compartment and the heating requirements of the battery pack assembly 11.

[0061] Specifically, the high-temperature coolant of the condenser 2 is divided into two parts after passing through the three-way valve 17: One part of the high-temperature coolant passes through the heater core 9, the second water pump 15, and the energy recovery device 8 and then returns to the condenser 2. The high-temperature coolant in the heater core 9 transfers heat to the air in the passenger compartment to achieve passenger compartment heating and improve passenger comfort. The other part of the high-temperature coolant passes through the second five-way valve 14, the third water pump 16, and the battery pack assembly 11 to preheat the battery pack assembly 11. Then the coolant passes through the first five-way valve 13 and the second water pump 15 and converges with the coolant flowing out of the heater core 9, and they are jointly driven into the energy recovery device 8. In this way, the heat of the battery pack assembly 11 can also be recovered and utilized, further improving the energy utilization efficiency of the system.

[0062] As Figure 3 shown, the water circuit system in this embodiment further includes a second five-way valve 14, a low-temperature radiator 20, a motor assembly 18, a first water pump 10, a first five-way valve 13, and a heater 12. In the heating mode, the outlet of the battery cooler 5 is sequentially connected to the second five-way valve 14, the low-temperature radiator 20, the motor assembly 18, the first water pump 10, the first five-way valve 13, and the heater 12, and the heater 12 is connected to the inlet of the battery cooler 5 to form a second heating circuit. The second heating circuit is mainly used for recovering the waste heat of the motor assembly 18.

[0063] Specifically, the coolant flows out of the battery cooler 5 and then passes through the second five-way valve 14, the low-temperature radiator 20, the motor assembly 18, the first water pump 10, the first five-way valve 13, and the heater 12 in sequence, realizing the recovery and utilization of the motor waste heat and improving the energy utilization efficiency of the vehicle thermal management system. The coolant heated by the heater 12 returns to the battery cooler 5 to appropriately heat the battery, ensuring that the battery can work normally in a low-temperature environment and improving the performance and lifespan of the battery.

[0064] It should be noted that the abbreviations of the components in the vehicle thermal management system in this embodiment are as follows:

[0065] Compressor 1 (Comp1), condenser 2 (WCC), gas-liquid separator integrated coaxial tube 3 (ACCU / IHX), first vortex tube 4 (Vortex1), battery cooler 5 (chiller), second vortex tube 6 (Vortex2), evaporator 7 (EVAP), energy recovery device 8 (ECO).

[0066] Heater core 9 (Heater), first water pump 10 (Pump1), battery pack assembly 11 (Battery), heater 12 (PTC), first five-way valve 13 (Multivalve1), second five-way valve 14 (Multivalve2), second water pump 15 (Pump2), third water pump 16 (Pump3), three-way valve 17 (Proportional valve), motor assembly 18 (MCU_F+Motor / DCDC+PDU), fan 19 (Cooling Fan), low-temperature radiator 20 (LTR).

[0067] The heat exchange principles and processes of the refrigerant circuit system and the water circuit system in the vehicle thermal management system in this embodiment in the refrigeration mode and the heating mode are as follows:

[0068] In the refrigeration mode, the low-temperature saturated gas in the refrigerant circuit system is compressed by the compressor 1 into a high-temperature and high-pressure gaseous refrigerant, which flows into the condenser 2, releases heat to the water circuit system and then becomes liquid. The liquid refrigerant flows into the first vortex tube 4 and the second vortex tube 6 respectively through the gas-liquid separator integrated coaxial tube device 3. The low-temperature saturated gas refrigerant and low-temperature saturated liquid refrigerant separated by the first vortex tube 4 enter the evaporator 7, and the flowing air generated by the blower exchanges heat with the evaporator 7 to achieve the cooling of the passenger compartment. The low-temperature saturated gas refrigerant and low-temperature saturated liquid refrigerant separated by the second vortex tube 6 enter the battery cooler 5, and exchange heat with the high-temperature antifreeze flowing out of the battery pack assembly 11 to achieve the cooling of the battery. The refrigerant after evaporation in the above two paths converges with the refrigerant that has been cooled in the energy recovery device 8 and then flows into the gas-liquid separator integrated coaxial tube device 3, and then enters the compressor 1. In the water circuit system, the high-temperature antifreeze flowing out of the condenser 2 reaches the low-temperature radiator 20 through the three-way valve 17 and the second five-way valve 14 for cooling. The cooled antifreeze enters the motor assembly 18 to complete the cooling, and then passes through the first water pump 10, the first five-way valve 13, and the second water pump 15 to first enter the energy recovery device 8 to absorb the heat of the high-temperature refrigerant and complete the heating, and then enter the condenser 2. At the same time, the high-temperature antifreeze flowing out of the battery pack assembly 11 reaches the battery cooler 5 through the first five-way valve 13 and the heater 12, exchanges heat with the low-temperature refrigerant to cool down, and then returns to the battery pack assembly 11 through the second five-way valve 14 and the third water pump 16, realizing the transfer of heat from the passenger compartment, battery and motor to the refrigerant and then to the environment.

[0069] In the heating mode, the low-temperature saturated gas in the refrigerant circuit system is compressed by the compressor 1 into a high-temperature and high-pressure gaseous refrigerant, which flows into the condenser 2, releases heat to the water circuit system and then becomes liquid. The liquid refrigerant flows into the second vortex tube 6 through the gas-liquid separator integrated coaxial tube device 3. The separated high-temperature superheated refrigerant gas enters the energy recovery device 8 to release heat to the water circuit system again. The low-temperature saturated gas refrigerant and low-temperature saturated liquid refrigerant enter the battery cooler 5. After the battery cooler 5 absorbs heat, the low-temperature antifreeze reaches the low-temperature radiator 20 through the second five-way valve 14 to absorb heat from the external environment, and then absorbs the waste heat of the motor assembly 18 and then enters the battery cooler 5 through the first water pump 10, the first five-way valve 13 and the heater 12 in sequence, completing the transfer of heat from the environment and the motor to the refrigerant. In the water circuit system, the high-temperature antifreeze after the condenser 2 releases heat is divided into two paths through the three-way valve 17: one path passes through the heater core 9 to complete the heating of the passenger compartment, and the other path reaches the battery pack assembly 11 through the second five-way valve 14 and the third water pump 16 to complete the heating. After the two paths of antifreeze converge, they first enter the energy recovery device 8 through the second water pump fifteen to absorb the heat of the high-temperature refrigerant and heat up, and then enter the condenser 2, realizing the transfer of heat from the refrigerant to the passenger compartment and the battery.

[0070] This embodiment also provides a vehicle, which includes the above-mentioned vehicle thermal management system. The vehicle has a high energy utilization efficiency, can improve the refrigeration and heating performance, reduce energy consumption, and achieve energy-saving operation of the vehicle.

[0071] Obviously, the above are only the preferred embodiments of the present invention and the applied technical principles. Those skilled in the art will understand that the present invention is not limited to the specific embodiments here, and various obvious changes, re-adjustments and substitutions can be made by those skilled in the art without departing from the protection scope of the present invention. Therefore, although the present invention has been described in more detail through the above embodiments, the present invention is not limited to the above embodiments. Without departing from the concept of the present invention, it can also include more other equivalent embodiments, and the scope of the present invention is determined by the scope of the appended claims.

[0072] Note that in the description of this specification, the descriptions referring to the terms "some embodiments", "other embodiments", etc. mean that the specific features, structures, materials or characteristics described in connection with the embodiment or example are included in at least one embodiment or example of the present invention. In this specification, the schematic expressions of the above terms do not necessarily refer to the same embodiment or example. Moreover, the specific features, structures, materials or characteristics described can be combined in any one or more embodiments or examples in a suitable manner.

Claims

1. An automotive thermal management system, characterized in that, Comprising: A refrigerant circuit system, the refrigerant circuit system including a compressor (1), a condenser (2), a gas-liquid separator integrated coaxial tube device (3), a first vortex tube (4), a second vortex tube (6), an evaporator (7), a battery cooler (5), and an energy recovery device (8); wherein, the compressor (1), the condenser (2), and the gas-liquid separator integrated coaxial tube device (3) are connected in sequence, the outlet end of the gas-liquid separator integrated coaxial tube device (3) is respectively connected to the first vortex tube (4) and the second vortex tube (6), the low-temperature refrigerant outlet of the first vortex tube (4) is connected to the evaporator (7), the low-temperature refrigerant outlet of the second vortex tube (6) is connected to the battery cooler (5), the high-temperature refrigerant outlets of the first vortex tube (4) and the second vortex tube (6) are both connected to the energy recovery device (8), the outlet of the energy recovery device (8) is connected to the suction port of the compressor (1) through the gas-liquid separator integrated coaxial tube device (3); A water circuit system, the water circuit system and the refrigerant circuit system performing heat exchange through the evaporator (7), the battery cooler (5), and the condenser (2).

2. The automotive thermal management system according to claim 1, wherein The gas-liquid separator integrated coaxial tube device (3) has a first inlet, a first outlet, a second inlet, and a second outlet; the first inlet is connected to the outlet end of the condenser (2), the first outlet is connected in parallel to the inlet ends of the first vortex tube (4) and the second vortex tube (6), the low-temperature refrigerant outlet of the first vortex tube (4) is connected to the inlet end of the evaporator (7), the low-temperature refrigerant outlet of the second vortex tube (6) is connected to the inlet end of the battery cooler (5), the outlet ends of the evaporator (7), the battery cooler (5), and the energy recovery device (8) are all connected to the second inlet of the gas-liquid separator integrated coaxial tube device (3), and the second outlet is connected to the suction port of the compressor (1).

3. The automotive thermal management system according to claim 1, characterized in that The vehicle thermal management system includes a refrigeration mode and a heating mode.

4. The automotive thermal management system according to claim 3, wherein, [[ID=ID=5]]The refrigerant circuit system further includes a blower, the blower being disposed on one side of the evaporator (7), and in the refrigeration mode, the blower is used to generate flowing air and perform heat exchange with the evaporator (7) to deliver the cooling capacity generated by the evaporator (7) to the passenger compartment.

5. The automotive thermal management system according to claim 3, characterized in that, The water circuit system includes a three-way valve (17), a second five-way valve (14), a low-temperature radiator (20), a motor assembly (18), a first water pump (10), a first five-way valve (13), and a second water pump (15); In the refrigeration mode, the water-side outlet of the condenser (2) is sequentially connected to the three-way valve (17), the second five-way valve (14), the low-temperature radiator water tank (20), the motor assembly (18), the first water pump (10), the first five-way valve (13) and the second water pump (15), and the second water pump (15) is sequentially connected to the energy recovery device (8) and the water-side inlet of the condenser (2) to form a first cooling circuit.

6. The automotive thermal management system according to claim 5, wherein The water circuit system further includes a fan (19), the fan (19) is arranged on one side of the low-temperature radiator water tank (20), and the fan (19) is configured to dissipate heat from the low-temperature radiator water tank (20).

7. The automotive thermal management system according to claim 3, characterized in that, The water circuit system includes a battery pack assembly (11), a first five-way valve (13), a heater (12), a second five-way valve (14) and a third water pump (16); In the refrigeration mode, the outlet of the battery pack assembly (11) is sequentially connected to the first five-way valve (13), the heater (12), the battery cooler (5), the second five-way valve (14) and the third water pump (16), and the third water pump (16) is connected to the inlet of the battery pack assembly (11) to form a second cooling circuit.

8. The automotive thermal management system according to claim 3, characterized in that, The water circuit system includes a three-way valve (17), a heater core (9), a second water pump (15), a second five-way valve (14), a third water pump (16), a battery pack assembly (11) and a first five-way valve (13); In the heating mode, the water-side outlet of the condenser (2) is connected to the three-way valve (17), one outlet of the three-way valve (17) is sequentially connected to the heater core (9), the second water pump (15) and the energy recovery device (8), and the outlet of the energy recovery device (8) is connected to the water-side inlet of the condenser (2); the other outlet of the three-way valve (17) is sequentially connected to the second five-way valve (14), the third water pump (16), the battery pack assembly (11), the first five-way valve (13) and the second water pump (15), so that the medium flowing out of the first five-way valve (13) and the medium flowing out of the heater core (9) are merged and then driven by the second water pump (15) into the energy recovery device (8) to form a first heating circuit.

9. The automotive thermal management system according to claim 3, wherein, The water circuit system includes a second five-way valve (14), a low-temperature radiator water tank (20), a motor assembly (18), a first water pump (10), a first five-way valve (13) and a heater (12); In the heating mode, the outlet of the battery cooler (5) is sequentially connected to the second five-way valve (14), the low-temperature radiator water tank (20), the motor assembly (18), the first water pump (10), the first five-way valve (13) and the heater (12), and the heater (12) is connected to the inlet of the battery cooler (5) to form a second heating circuit.

10. An automobile, characterized in that, The vehicle includes the vehicle thermal management system according to any one of claims 1-9.

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