Vehicle heat management system, vehicle-mounted air conditioner and electric vehicle

Abstract

The invention belongs to the technical field of vehicle heat management, and particularly relates to a vehicle heat management system, a vehicle-mounted air conditioner and an electric automobile, the vehicle heat management system comprises a compressor, a heated object, a passenger compartment evaporator, a plurality of electronic expansion valves and a plurality of heat exchangers, and at least one heat exchanger is located in a loop on the side of the heated object; a high-temperature refrigerant flowing out of the compressor enters the heat exchanger in the heated object side loop through an electronic expansion valve for heat exchange to obtain a low-temperature refrigerant, the low-temperature refrigerant enters the passenger compartment evaporator through another electronic expansion valve, and refrigerating of a passenger compartment is achieved. The problems of user comfort and refrigerator volume utilization rate are solved.

Description

Technical Field

[0001] The present invention belongs to the technical field of vehicle thermal management, and in particular relates to a vehicle thermal management system, a vehicle air conditioner and an electric vehicle. Background Art

[0002] Car refrigerator technology plays an important role in improving the comfort and convenience of the car. As people's requirements for the interior environment and functions of the car continue to increase, car refrigerators have become standard or optional equipment for many models, especially high-end models and leisure models.

[0003] At present, most car refrigerators adopt an independent system design, including independent compressors, condensers, expansion valves, insulation layers and heating devices and other components. This design can realize the refrigeration and heating functions of the refrigerator, providing convenience for storing food and beverages in the car.

[0004] However, when the independent system refrigerator is working, the operation of the compressor and the flow of refrigerant will generate certain noise, which may affect the comfort of the passengers in the car. Installing an independent system refrigerator in the limited space in the car requires reserving installation space for each functional component, which will reduce the effective storage volume of the refrigerator to a certain extent and reduce the space utilization rate.

[0005] In addition, independent system car refrigerators also face challenges in terms of energy efficiency, weight and cost. How to improve energy efficiency, reduce vehicle weight and reduce production and use costs while ensuring the refrigeration effect is a problem that needs to be solved in the development of car refrigerator technology.

[0006] Therefore, developing new in-vehicle refrigerator technologies to improve comfort, space utilization and energy efficiency while reducing noise and cost is of great significance to improving the in-vehicle environment and enhancing user experience. Summary of the invention

[0007] In view of the above-mentioned shortcomings of the prior art, the purpose of the present invention is to provide a vehicle thermal management system, a vehicle air conditioner and an electric car, which solve the problems of user comfort and refrigerator volume utilization.

[0008] To achieve the above purpose, the present invention adopts the following technical solution.

[0009] A first aspect of the present invention provides a vehicle thermal management system, comprising: a compressor, a heat-releasing object, a passenger compartment evaporator, a plurality of electronic expansion valves, and a plurality of heat exchangers, wherein at least one heat exchanger is located in a heat-releasing object side circuit; The high-temperature refrigerant flowing out of the compressor enters the heat exchanger in the heat release side circuit through an electronic expansion valve for heat exchange to obtain low-temperature refrigerant. The low-temperature refrigerant enters the passenger compartment evaporator through another electronic expansion valve to achieve passenger compartment cooling.

[0010] A second aspect of the present invention provides a vehicle thermal management system, comprising: a compressor, a refrigerator, a plurality of electronic expansion valves and a plurality of heat exchangers, wherein at least one heat exchanger is located in a refrigerator side circuit; The high-temperature refrigerant flowing out of the compressor enters the heat exchanger in the refrigerator side loop through an electronic expansion valve to exchange heat, thereby achieving heating of the refrigerator; and / or The high-temperature refrigerant gas flowing out of the compressor enters a heat exchanger through an electronic expansion valve for heat exchange to obtain a low-temperature refrigerant. The low-temperature refrigerant enters the heat exchanger in the refrigerator side loop through another electronic expansion valve for heat exchange cooling to achieve refrigerator refrigeration.

[0011] As an optional embodiment, the vehicle thermal management system further includes a heat-dissipating object and / or a cooled object; the heat-dissipating object is a heat exchanger for heat exchange with the environment and / or a heat exchanger for heat exchange with the passenger compartment; The object to be cooled may be a battery, an electric drive, or a heat exchanger for exchanging heat with the environment.

[0012] As an optional embodiment, the vehicle thermal management system further includes a passenger compartment evaporator, and at least one heat exchanger is located in the heat release object side circuit; The high-temperature refrigerant flowing out of the compressor enters the heat exchanger in the heat release side circuit through an electronic expansion valve for heat exchange to obtain low-temperature refrigerant. The low-temperature refrigerant enters the passenger compartment evaporator through another electronic expansion valve to achieve passenger compartment cooling.

[0013] As an optional implementation, the vehicle thermal management system further includes a cooled object, and at least one heat exchanger is located in a circuit on the cooled object side; The high-temperature refrigerant flowing out of the compressor enters the heat exchanger in the circuit of the heat-releasing object through an electronic expansion valve to exchange heat to obtain low-temperature refrigerant. The low-temperature refrigerant enters the heat exchanger in the circuit of the cooled object through another electronic expansion valve to cool the cooled object.

[0014] As an optional implementation, the vehicle thermal management system further includes a plurality of electronic water pumps, and at least one electronic water pump is located in the heat release object side circuit, and at least one electronic water pump is located in the refrigerator side circuit; When achieving refrigerator refrigeration: The electronic water pump in the circuit on the heat release object side runs to provide circulation power for the coolant. The coolant heated by the high-temperature refrigerant flows out and enters the electronic water pump in the circuit on the heat release object side. After coming out, it exchanges heat with the heat release object. The cooled coolant enters the heat exchanger in the circuit on the heat release object side, and a new cycle begins; the electronic water pump in the circuit on the refrigerator side runs to provide circulation power for the coolant. The coolant cooled by the low-temperature refrigerant flows out and enters the refrigerator for cooling. After coming out, it enters the electronic water pump in the circuit on the refrigerator side, and a new cycle begins.

[0015] As an optional implementation, the vehicle thermal management system further includes a plurality of electronic water pumps, and at least one electronic water pump is located in the cooling object side circuit, and at least one electronic water pump is located in the refrigerator side circuit; When heating the refrigerator: The electronic water pump in the circuit on the cooled object side runs to provide circulation power for the coolant. The coolant cooled by the low-temperature refrigerant flows out into the cooled object for cooling, and then comes out and enters the electronic water pump in the circuit on the cooled object side to start a new cycle. The electronic water pump in the circuit on the refrigerator side runs to provide circulation power for the coolant. The coolant heated by the high-temperature refrigerant flows out into the refrigerator for heating, and then comes out and enters the electronic water pump in the circuit on the refrigerator side to start a new cycle.

[0016] As an optional embodiment, the vehicle thermal management system further includes a plurality of electronic water pumps, and at least one electronic water pump is located in the heat release object side circuit, at least one electronic water pump is located in the cooling object side circuit, and at least one heat exchanger is located in the heat release object side circuit; When heating the passenger compartment: The high-temperature refrigerant flowing out of the compressor enters the heat exchanger in the circuit of the heat releasing object side through an electronic expansion valve for heat exchange to obtain low-temperature refrigerant, and the low-temperature refrigerant enters the heat exchanger in the circuit of the cooled object side through another electronic expansion valve; the electronic water pump in the circuit of the heat releasing object side runs to provide circulation power for the coolant, and the coolant heated by the high-temperature refrigerant flows out and enters the electronic water pump in the circuit of the heat releasing object side, and exchanges heat with the heat releasing object after coming out and heats the heat releasing object; the flowing coolant enters the heat exchanger in the circuit of the heat releasing object side to start a new cycle; the electronic water pump in the circuit of the cooled object side runs to provide circulation power for the coolant, and the coolant cooled by the low-temperature refrigerant flows out and enters the cooled object for cooling, and enters the electronic water pump in the circuit of the cooled object side to start a new cycle.

[0017] A third aspect of the present invention provides a vehicle thermal management system, comprising a compressor, a heat-releasing object, a plurality of electronic expansion valves, a plurality of heat exchangers and a plurality of water pumps, wherein at least one heat exchanger is located in a circuit on the side of the heat-releasing object, and at least one electronic water pump is located in a circuit on the side of the heat-releasing object; The high-temperature refrigerant flowing out of the compressor enters the heat exchanger in the circuit of the heat releasing object side through an electronic expansion valve for heat exchange to obtain low-temperature refrigerant, and the low-temperature refrigerant enters the heat exchanger in the circuit of the cooled object side through another electronic expansion valve; the electronic water pump in the circuit of the heat releasing object side runs to provide circulation power for the coolant, and the coolant heated by the high-temperature refrigerant flows out and enters the electronic water pump in the circuit of the heat releasing object side, and after coming out, it exchanges heat with the heat releasing object and heats the heat releasing object.

[0018] A fourth aspect of the present invention provides a control method for a vehicle thermal management system based on the first aspect, the second aspect, or the third aspect of the present invention, comprising: Obtaining a target temperature of a refrigerator, wherein the refrigerator is a vehicle-mounted refrigerator; According to the target temperature, the working states of the compressor, the refrigerator, the plurality of electronic expansion valves and the plurality of heat exchangers are controlled to adjust the temperature of the vehicle refrigerator.

[0019] A fifth aspect of the present invention provides a vehicle-mounted refrigerator, comprising: Cold room; a heat exchanger thermally connected to the refrigerator compartment, the heat exchanger being in a refrigerator-side loop; wherein the heat exchanger is thermally connected to a vehicle thermal management circuit, the vehicle thermal management circuit comprising a compressor, a plurality of electronic expansion valves and a plurality of heat exchangers, wherein there is a heat exchanger that is thermally connected to the refrigeration chamber; The heat exchanger realizes cooling or heating of the refrigerated compartment by thermally connecting with the vehicle thermal management circuit.

[0020] A sixth aspect of the present invention provides a control method for the vehicle refrigerator according to the fifth aspect of the present invention, comprising: Detect and obtain the target temperature of the refrigerator based on the current temperature of the refrigerator compartment; According to the target temperature, the working states of the compressor, the refrigerator, the plurality of electronic expansion valves and the plurality of heat exchangers are controlled to adjust the temperature of the vehicle refrigerator.

[0021] A seventh aspect of the present invention provides an electric vehicle, comprising the electric vehicle thermal management system as described in the first aspect, the second aspect, or the third aspect of the present invention or the vehicle refrigerator as described in the fifth aspect.

[0022] An eighth aspect of the present invention provides an electronic device, comprising: At least one processor; and at least one memory communicatively connected to the processor, wherein: the memory stores program instructions executable by the processor, and the processor calls the program instructions to execute the steps of the method described in the fourth or sixth aspect of the present invention.

[0023] A ninth aspect of the present invention provides a readable storage medium storing a computer program, wherein the computer program is executed by a processor to perform the steps of the method described in the fourth or sixth aspect of the present invention.

[0024] In summary, compared with the prior art, the present invention includes at least one of the following beneficial technical effects: 1. The present invention realizes the integration of the thermal management system of the vehicle refrigerator and other vehicle components by thermally connecting the vehicle refrigerator with the vehicle thermal management circuit, which can improve the thermal management efficiency of the whole vehicle and reduce the space occupation and weight increase caused by the independent system; 2. The present invention reduces the manufacturing cost and energy consumption of the vehicle refrigerator, while reducing the noise generated by the operation of the independent compressor and improving the comfort in the vehicle; 3. The present invention realizes cooling and heating of the refrigerator by utilizing a compressor, a heat exchanger, etc., thereby improving user comfort and refrigerator volume utilization. BRIEF DESCRIPTION OF THE DRAWINGS

[0025] In order to more clearly illustrate the technical solutions in the embodiments of the present application, the drawings required for use in the description of the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present application. For those skilled in the art, other drawings can be obtained based on these drawings without creative work.

[0026] Figure 1 A diagram showing the overall hardware structure connection relationship of a vehicle thermal management system in one embodiment of the present invention.

[0027] Figure 2 A diagram showing the overall hardware structure connection relationship of another vehicle thermal management system in an embodiment of the present invention.

[0028] Figure 3 A diagram showing the overall hardware structure connection relationship of another vehicle thermal management system in an embodiment of the present invention.

[0029] Figure 4 A diagram showing the overall hardware structure connection relationship of another vehicle thermal management system in an embodiment of the present invention.

[0030] Figure 5 A diagram showing the overall hardware structure connection relationship of another vehicle thermal management system in an embodiment of the present invention.

[0031] Figure 6A diagram showing the overall hardware structure connection relationship of another vehicle thermal management system in an embodiment of the present invention.

[0032] Figure 7 A diagram showing the overall hardware structure connection relationship of another vehicle thermal management system in an embodiment of the present invention.

[0033] Figure 8 A diagram showing the overall hardware structure connection relationship of another vehicle thermal management system in an embodiment of the present invention.

[0034] Fig. 9 A diagram showing the overall hardware structure connection relationship of another vehicle thermal management system in an embodiment of the present invention.

[0035] Fig.10 A diagram showing the overall hardware structure connection relationship of another vehicle thermal management system in an embodiment of the present invention.

[0036] Fig.11 A diagram showing the overall hardware structure connection relationship of another vehicle thermal management system in an embodiment of the present invention.

[0037] Fig.12 A flow chart of a control method based on a vehicle thermal management system in one embodiment of the present invention is shown.

[0038] Fig.13 A flow chart of a control method based on a vehicle refrigerator in one embodiment of the present invention is shown.

[0039] Fig.14 FIG. 1 is a schematic structural diagram of an electronic device according to an embodiment of the present invention.

[0040] Reference numerals: 1- compressor, 2- first plate heat exchanger, 3- passenger compartment evaporator, 4- second plate heat exchanger, 5- third plate heat exchanger; 6- first electronic water pump, 7- second electronic water pump, 8- third electronic water pump, 9- heat release object, 10- cooled object, 11- first electronic expansion valve, 12- second electronic expansion valve, 13- third electronic expansion valve, 14- fourth electronic expansion valve, 15- fifth electronic expansion valve, 16- first check valve, 17- electromagnetic stop valve, 18- refrigerator, 19- second check valve. DETAILED DESCRIPTION

[0041] The technical solutions in the embodiments of the present application will be clearly and completely described below in conjunction with the drawings in the embodiments of the present application. Obviously, the described embodiments are only part of the embodiments of the present application, rather than all of the embodiments. Based on the embodiments in the present application, all other embodiments obtained by those skilled in the art without creative work are within the scope of protection of the present application. In addition, it should be understood that the specific embodiments described herein are only used to illustrate and explain the present application, and are not used to limit the present application.

[0042] It should be noted that the description order of the following embodiments is not intended to limit the preferred order of the embodiments of the present application. In addition, in the following embodiments, the description of each embodiment has its own emphasis, and for parts not described in detail in one embodiment, reference can be made to the relevant description of other embodiments.

[0043] like Figure 1 As shown, the present invention provides a connection relationship diagram of the overall hardware structure of a vehicle thermal management system, including a compressor 1, a first plate heat exchanger 2, a passenger compartment evaporator 3, a second plate heat exchanger 4, a third plate heat exchanger 5, a first electronic water pump 6, a second electronic water pump 7, a third electronic water pump 8, a heat-dissipating object 9, a cooling object 10, a first electronic expansion valve 11, a second electronic expansion valve 12, a third electronic expansion valve 13, a fourth electronic expansion valve 14, a fifth electronic expansion valve 15, a first check valve 16, an electromagnetic stop valve 17, a refrigerator 18, and a second check valve 19. Among them, the heat-dissipating object 9 can be a heat exchanger for heat exchange with the environment or a heat exchanger for heat exchange with the passenger compartment, and the present invention will not be described in detail. Among them, the cooling object 10 can be a battery, an electric drive, or a heat exchanger for heat exchange with the environment, and the present invention will not be described in detail. Among them, the inner diameters of the first electronic expansion valve 11 and the second electronic expansion valve 12 are close to the inner diameters of the connected refrigerant pipelines, and have the functions of full circulation and throttling.

[0044] Specifically, the object to be heat released is a heat exchanger that exchanges heat with the environment and / or a heat exchanger that exchanges heat with the passenger compartment. These two are parallel concepts of heat exchangers. The object to be cooled is a battery or an electric drive or a heat exchanger that exchanges heat with the environment. These are three parallel concepts.

[0045] The vehicle thermal management system provided by the present invention can realize different functions through various electronic expansion valves and electromagnetic stop valves. The specific functions realized and the corresponding switching methods of each valve body are shown in Tables 1 and 2 below. The following embodiments of the present invention will be specifically described in conjunction with Tables 1 and 2.

[0046] Table 1 Function Specific content one Passenger compartment cooling two Passenger compartment cooling + object cooling three Passenger cabin cooling + object cooling + refrigerator cooling Four Refrigeration five Passenger cabin cooling + object cooling + refrigerator heating six Passenger compartment heating seven Heating of passenger compartment + heating of refrigerator eight Refrigerator heating Nine Heating and cooling of passenger compartment

[0047] Table 2 Function one two three Four five six seven eight Nine First electronic expansion valve 11 closure closure closure closure Throttling closure Throttling Fully open closure The second electronic expansion valve 12 Fully open Fully open Fully open Fully open Throttling Fully open Throttling closure Fully open The third electronic expansion valve 13 Throttling Throttling Throttling closure Throttling closure closure closure closure Fourth electronic expansion valve 14 closure Throttling Throttling Shutdown or throttling Throttling Throttling Throttling Throttling Throttling Fifth electronic expansion valve 15 closure closure Throttling Throttling closure closure closure closure Throttling Solenoid stop valve 17 closure closure Open Open closure closure closure closure Open First electronic water pump 6 Work Work Work Work Work Work Work closure Work Second electronic water pump 7 closure Work Work Close or work Work Work Work Work Work The third electronic water pump 8 closure closure Work Work Work closure Work Work Work

[0048] The present invention shows Figure 2-Figure 10 In the diagrams, please focus on the relatively thick lines and their corresponding components or connecting pipes.

[0049] like Figure 2 As shown, the first aspect of the present invention provides a vehicle thermal management system, comprising: a compressor 1, a heat-releasing object 9, a passenger compartment evaporator 3, a plurality of electronic expansion valves and a plurality of heat exchangers, and at least one heat exchanger (here referring to the first plate heat exchanger 2) is in the circuit on the side of the heat-releasing object 9.

[0050] The high-temperature refrigerant flowing out of the compressor 1 enters the heat exchanger (herein the first plate heat exchanger 2) in the heat release side circuit through an electronic expansion valve (herein the second electronic expansion valve 12) for heat exchange to obtain low-temperature refrigerant. The low-temperature refrigerant enters the passenger compartment evaporator 3 through another electronic expansion valve (herein the third electronic expansion valve 13) to achieve passenger compartment cooling.

[0051] Specifically, Figure 2 As shown, corresponding to function one of the present invention: the first electronic expansion valve 11 is closed, the second electronic expansion valve 12 is fully open, the third electronic expansion valve 13 is throttled, the fourth electronic expansion valve 14 is closed, the fifth electronic expansion valve 15 is closed, the electromagnetic stop valve 17 is closed, the first electronic water pump 6 is working, the second electronic water pump 7 is closed, and the third electronic water pump 8 is closed.

[0052] The high-temperature and high-pressure refrigerant gas at the outlet of the compressor 1 enters the first plate heat exchanger 2 through the fully opened second electronic expansion valve 12 to exchange heat with the coolant side and then becomes liquid. It is throttled by the third electronic expansion valve 13 to become a low-temperature and low-pressure two-phase refrigerant and enters the passenger compartment evaporator 3 to achieve refrigeration and cooling of the passenger compartment. The low-temperature and low-pressure refrigerant flowing out of the passenger compartment evaporator 3 enters the compressor 1 and starts a new cycle. The first electronic water pump 6 runs to provide circulation power for the coolant. The coolant heated by the high-temperature refrigerant flows out and enters the first electronic water pump 6. After coming out, it exchanges heat with the heat-releasing object 9. The cooled coolant enters the first plate heat exchanger 2 and starts a new cycle.

[0053] Here, the present invention can realize the function of "passenger compartment cooling".

[0054] In one embodiment of the present invention, Figure 3As shown, it corresponds to the second function of the present invention: the first electronic expansion valve 11 is closed, the second electronic expansion valve 12 is fully opened, the third electronic expansion valve 13 is throttled, the fourth electronic expansion valve 14 is throttled, the fifth electronic expansion valve 15 is closed, the electromagnetic stop valve 17 is closed, the first electronic water pump 6 is working, the second electronic water pump 7 is working, and the third electronic water pump 8 is closed. The high-temperature and high-pressure refrigerant gas at the outlet of the compressor 1 enters the first plate heat exchanger 2 through the fully opened second electronic expansion valve 12 to exchange heat with the coolant side and become liquid after cooling. After coming out, it is divided into two paths. One path is throttled by the third electronic expansion valve 13 to become a low-temperature and low-pressure two-phase refrigerant and enter the passenger compartment evaporator 3 to achieve refrigeration and cooling of the passenger compartment. The other path is throttled by the fourth electronic expansion valve 14 to become a low-temperature and low-pressure two-phase refrigerant and enter the second plate heat exchanger 4 to exchange heat with the coolant side and cool the cooled object 10. Then, it is mixed with the low-temperature and low-pressure refrigerant flowing out of the passenger compartment evaporator 3 and enters the compressor 1 to start a new cycle. The first electronic water pump 6 operates to provide circulation power for the coolant. The coolant heated by the high-temperature refrigerant flows out and enters the first electronic water pump 6. After coming out, it exchanges heat with the heat-releasing object 9. The cooled coolant enters the first plate heat exchanger 2 to start a new cycle. The second electronic water pump 7 operates to provide circulation power for the coolant. The coolant cooled by the low-temperature refrigerant flows out and enters the cooled object 10 for cooling. After coming out, it enters the second electronic water pump 7 to start a new cycle.

[0055] Here, the present invention can realize the functions of "passenger compartment cooling + cooled object cooling".

[0056] In one embodiment of the present invention, Figure 4 As shown, it corresponds to function three of the present invention: the first electronic expansion valve 11 is closed, the second electronic expansion valve 12 is fully opened, the third electronic expansion valve 13 is throttled, the fourth electronic expansion valve 14 is throttled, the fifth electronic expansion valve 15 is throttled, the electromagnetic stop valve 17 is opened, the first electronic water pump 6 is working, the second electronic water pump 7 is working, and the third electronic water pump 8 is working.

[0057] The high-temperature and high-pressure refrigerant gas at the outlet of the compressor 1 enters the first plate heat exchanger 2 through the fully-open second electronic expansion valve 12 to exchange heat with the coolant side and become liquid after cooling. After exiting, it is divided into three paths. One path is throttled by the third electronic expansion valve 13 to become a low-temperature and low-pressure two-phase refrigerant and enter the passenger compartment evaporator 3 to achieve refrigeration and cooling of the passenger compartment; one path is throttled by the fourth electronic expansion valve 14 to become a low-temperature and low-pressure two-phase refrigerant and enter the second plate heat exchanger 4 to exchange heat with the coolant side and cool the cooled object 10; one path is throttled by the fifth electronic expansion valve 15 to become a low-temperature and low-pressure two-phase refrigerant and enter the third plate heat exchanger 5 to exchange heat with the refrigerator circuit coolant to cool the refrigerator 18. The refrigerant flowing out of the third plate heat exchanger 5 passes through the electromagnetic stop valve 17 and the second one-way valve 19 and merges with the low-temperature and low-pressure refrigerant flowing out of the passenger compartment evaporator 3 and the second plate heat exchanger 4, and then enters the compressor 1 to start a new cycle. The first electronic water pump 6 operates to provide circulation power for the coolant. The coolant heated by the high-temperature refrigerant flows out and enters the first electronic water pump 6. After coming out, it exchanges heat with the heat-releasing object 9. The cooled coolant enters the first plate heat exchanger 2 to start a new cycle. The second electronic water pump 7 operates to provide circulation power for the coolant. The coolant cooled by the low-temperature refrigerant flows out and enters the cooled object 10 for cooling. After coming out, it enters the second electronic water pump 7 to start a new cycle. The third electronic water pump 8 operates to provide circulation power for the coolant. The coolant cooled by the low-temperature refrigerant flows out and enters the refrigerator 18 for cooling. After coming out, it enters the third electronic water pump 8 to start a new cycle.

[0058] Here, the present invention can realize the functions of "passenger cabin cooling + cooled object cooling + refrigerator refrigeration".

[0059] A second aspect of the present invention provides a vehicle thermal management system, comprising: a compressor, a refrigerator, a plurality of electronic expansion valves and a plurality of heat exchangers, wherein at least one heat exchanger (herein, the third plate heat exchanger 5) is located in the refrigerator side loop.

[0060] Specifically, Figure 5 As shown, corresponding to function four of the present invention: the high-temperature refrigerant gas flowing out of the compressor 1 enters a heat exchanger (herein the first plate heat exchanger 2) through an electronic expansion valve (herein the second electronic expansion valve 12) for heat exchange to obtain a low-temperature refrigerant, and the low-temperature refrigerant enters the heat exchanger (herein the third plate heat exchanger 5) in the refrigerator side loop through another electronic expansion valve (herein the fifth electronic expansion valve 15) for heat exchange cooling to achieve refrigerator refrigeration.

[0061] Specifically, the first electronic expansion valve 11 is closed, the second electronic expansion valve 12 is fully opened, the third electronic expansion valve 13 is closed, the fourth electronic expansion valve 14 is closed or throttled, the fifth electronic expansion valve 15 is throttled, the electromagnetic stop valve 17 is opened, the first electronic water pump 6 is working, the second electronic water pump 7 is closed or working, and the third electronic water pump 8 is working.

[0062] The high-temperature and high-pressure refrigerant gas at the outlet of the compressor 1 enters the first plate heat exchanger 2 through the fully opened second electronic expansion valve 12 to exchange heat with the coolant side and become liquid after cooling. After exiting, it is throttled by the fifth electronic expansion valve 15 to become a low-temperature and low-pressure two-phase refrigerant and enter the third plate heat exchanger 5 to exchange heat with the refrigerator circuit coolant to cool the refrigerator 18. The refrigerant flowing out of the third plate heat exchanger 5 enters the compressor 1 after passing through the electromagnetic stop valve 17 and the second check valve 19 to start a new cycle. The first electronic water pump 6 runs to provide circulation power for the coolant. The coolant heated by the high-temperature refrigerant flows out and enters the first electronic water pump 6. After exiting, it exchanges heat with the heat-releasing object 9. The cooled coolant enters the first plate heat exchanger 2 to start a new cycle. The third electronic water pump 8 runs to provide circulation power for the coolant. The coolant cooled by the low-temperature refrigerant flows out and enters the refrigerator 18 for cooling. After exiting, it enters the third electronic water pump 8 to start a new cycle. When the lowest speed selected by the compressor 1 overmatches the refrigerator refrigeration load, the fourth electronic expansion valve 14 can be opened to throttle and distribute a portion of the refrigerant cooling capacity to the cooled object 10 to meet the operating requirements of the compressor 1.

[0063] Here, the present invention can realize the "refrigerator refrigeration" function.

[0064] Specifically, Figure 6 As shown, combined with and corresponding to function five of the present invention: the first electronic expansion valve 11 throttles, the second electronic expansion valve 12 throttles, the third electronic expansion valve 13 throttles, the fourth electronic expansion valve 14 throttles, the fifth electronic expansion valve 15 is closed, the electromagnetic stop valve 17 is closed, the first electronic water pump 6 works, the second electronic water pump 7 works, and the third electronic water pump 8 works.

[0065] The high-temperature and high-pressure refrigerant gas at the outlet of the compressor 1 is divided into two paths. One path distributes a certain flow of refrigerant to the third plate heat exchanger 5 through the first electronic expansion valve 11, and exchanges heat with the refrigerator circuit coolant to heat the refrigerator 18. The other path distributes a certain flow of refrigerant to the first plate heat exchanger 2 through the second electronic expansion valve 12, and exchanges heat with the coolant side to become liquid after cooling. After coming out, it merges with the refrigerant coming out of the third plate heat exchanger 5 through the first check valve 16 and is divided into two paths. One path is throttled by the third electronic expansion valve 13 to become a low-temperature and low-pressure two-phase refrigerant to enter the passenger compartment evaporator 3, realizing the refrigeration and cooling of the passenger compartment; the other path is throttled by the fourth electronic expansion valve 14 to become a low-temperature and low-pressure two-phase refrigerant to enter the second plate heat exchanger 4, and exchanges heat with the coolant side and cools the cooled object 10. The low-temperature and low-pressure refrigerants flowing out of the passenger compartment evaporator 3 and the second plate heat exchanger 4 merge and enter the compressor 1 to start a new cycle. The first electronic water pump 6 operates to provide circulation power for the coolant. The coolant heated by the high-temperature refrigerant flows out and enters the first electronic water pump 6. After coming out, it exchanges heat with the heat-releasing object 9. The cooled coolant enters the first plate heat exchanger 2 to start a new cycle. The second electronic water pump 7 operates to provide circulation power for the coolant. The coolant cooled by the low-temperature refrigerant flows out and enters the cooled object 10 for cooling. After coming out, it enters the second electronic water pump 7 to start a new cycle. The third electronic water pump 8 operates to provide circulation power for the coolant. The coolant heated by the high-temperature refrigerant flows out and enters the refrigerator 18 for heating. After coming out, it enters the third electronic water pump 8 to start a new cycle.

[0066] Here, the present invention can realize the functions of "passenger cabin cooling + cooled object cooling + refrigerator heating".

[0067] In one embodiment of the present invention, there is at least one heat exchanger (herein, the first plate heat exchanger 2 ) in the circuit on the side of the object to be heated.

[0068] The high-temperature refrigerant flowing out of the compressor 1 enters the heat exchanger (herein the first plate heat exchanger 2) in the heat release side circuit through an electronic expansion valve (herein the second electronic expansion valve 12) for heat exchange to obtain low-temperature refrigerant. The low-temperature refrigerant enters the passenger compartment evaporator 3 through another electronic expansion valve (herein the third electronic expansion valve 13) to achieve passenger compartment cooling.

[0069] Here, the present invention can realize the functions of "passenger cabin cooling + refrigerator cooling (or refrigerator heating)".

[0070] In one embodiment of the present invention, there is at least one heat exchanger (here, the second plate heat exchanger 4 ) in the cooling object side circuit.

[0071] The high-temperature refrigerant flowing out of the compressor 1 enters the heat exchanger (herein the first plate heat exchanger 2) in the circuit of the heat-releasing object side through an electronic expansion valve (herein the second electronic expansion valve 12) for heat exchange to obtain a low-temperature refrigerant. The low-temperature refrigerant enters the heat exchanger (herein the second plate heat exchanger 4) in the circuit of the cooled object side through another electronic expansion valve (herein the fourth electronic expansion valve 14) to achieve cooling of the cooled object 10.

[0072] Here, the present invention can realize the functions of "cooling the cooled object + refrigeration of the refrigerator (or heating of the refrigerator)".

[0073] In one embodiment of the present invention, at least one electronic water pump (herein, the second electronic water pump 7) is located in the heat release object side circuit, and at least one electronic water pump (herein, the third electronic water pump 8) is located in the refrigerator side circuit; When the refrigerator 18 is refrigerated: The electronic water pump in the heat release object side circuit (here refers to the second electronic water pump 7) runs to provide circulation power for the coolant. The coolant heated by the high-temperature refrigerant flows out and enters the electronic water pump in the heat release object side circuit (here refers to the second electronic water pump 7). After coming out, it exchanges heat with the heat release object 9. The cooled coolant enters the heat exchanger in the heat release object side circuit (here refers to the first plate heat exchanger 2), and a new cycle begins; the electronic water pump in the refrigerator side circuit (here refers to the third electronic water pump 8) runs to provide circulation power for the coolant. The coolant cooled by the low-temperature refrigerant flows out and enters the refrigerator 18 for cooling. After coming out, it enters the electronic water pump in the refrigerator side circuit (here refers to the third electronic water pump 8), and a new cycle begins.

[0074] Here, the present invention can realize the "refrigerator refrigeration" function. When the lowest speed selected by the compressor 1 is overmatched with the refrigeration load of the refrigerator 18, the fourth electronic expansion valve 14 is opened to throttle and distribute a part of the refrigerant coldness to the cooled object 10 to meet the operation requirements of the compressor 1.

[0075] In one embodiment of the present invention, at least one electronic water pump (herein, the second electronic water pump 7) is located in the cooling object side circuit, and at least one electronic water pump (herein, the third electronic water pump 8) is located in the refrigerator side circuit; When the refrigerator 18 is heated: The electronic water pump in the circuit on the cooled object side (herein the second electronic water pump 7) runs to provide circulation power for the coolant, and the coolant cooled by the low-temperature refrigerant flows out into the cooled object 10 for cooling, and then enters the electronic water pump in the circuit on the cooled object side (herein the second electronic water pump 7) to start a new circulation; the electronic water pump in the circuit on the refrigerator side (herein the third electronic water pump 8) runs to provide circulation power for the coolant, and the coolant heated by the high-temperature refrigerant flows out into the refrigerator 18 for heating, and then enters the electronic water pump in the circuit on the refrigerator side (herein the third electronic water pump 8) to start a new circulation.

[0076] Here, the present invention can realize the "refrigerator heating" function.

[0077] A third aspect of the present invention provides a vehicle thermal management system, including a compressor 1, a heat releasing object, multiple electronic expansion valves, multiple heat exchangers and multiple water pumps, and at least one heat exchanger (herein the first plate heat exchanger 2) is located in the circuit on the side of the heat releasing object, and at least one electronic water pump (herein the first electronic water pump 6) is located in the circuit on the side of the heat releasing object.

[0078] The high-temperature refrigerant flowing out of the compressor 1 enters the heat exchanger in the heat release side circuit through an electronic expansion valve (here the second electronic expansion valve 12) for heat exchange to obtain low-temperature refrigerant, and the low-temperature refrigerant enters the heat exchanger in the cooling side circuit through another electronic expansion valve (here the first plate heat exchanger 2); the electronic water pump in the heat release side circuit (here the first electronic water pump 6) runs to provide circulation power for the coolant, and the coolant heated by the high-temperature refrigerant flows out and enters the electronic water pump in the heat release side circuit (here the first electronic water pump 6), and after coming out, it exchanges heat with the heat release object 9 and heats the heat release object 9.

[0079] Specifically, Figure 7 As shown, it corresponds to function six of the present invention: the first electronic expansion valve 11 is closed, the second electronic expansion valve 12 is fully open, the third electronic expansion valve 13 is closed, the fourth electronic expansion valve 14 is throttled, the fifth electronic expansion valve 15 is closed, the electromagnetic stop valve 17 is closed, the first electronic water pump 6 is working, the second electronic water pump 7 is working, and the third electronic water pump 8 is closed.

[0080] The high-temperature and high-pressure refrigerant gas at the outlet of the compressor 1 enters the first plate heat exchanger 2 through the fully opened second electronic expansion valve 12 to exchange heat with the coolant side and cool it to become liquid. After exiting, it is throttled by the fourth electronic expansion valve 14 to become a low-temperature and low-pressure two-phase refrigerant and enter the second plate heat exchanger 4 to exchange heat with the coolant side and cool the cooled object 10. The low-temperature and low-pressure refrigerant that flows out enters the compressor 1 to start a new cycle. The first electronic water pump 6 runs to provide circulation power for the coolant. The coolant heated by the high-temperature refrigerant flows out and enters the first electronic water pump 6. After exiting, it exchanges heat with the heat-releasing object 9 and heats it to achieve the heating function. The coolant that flows out enters the first plate heat exchanger 2 to start a new cycle. The second electronic water pump 7 runs to provide circulation power for the coolant. The coolant cooled by the low-temperature refrigerant flows out and enters the cooled object 10 to cool. After exiting, it enters the second electronic water pump 7 to start a new cycle.

[0081] Here, the present invention can realize the function of "passenger compartment heating".

[0082] In one embodiment of the present invention, Figure 8 As shown, it corresponds to function seven of the present invention: the first electronic expansion valve 11 is throttled, the second electronic expansion valve 12 is throttled, the third electronic expansion valve 13 is closed, the fourth electronic expansion valve 14 is throttled, the fifth electronic expansion valve 15 is closed, the electromagnetic stop valve 17 is closed, the first electronic water pump 6 is working, the second electronic water pump 7 is working, and the third electronic water pump 8 is working.

[0083] The high-temperature and high-pressure refrigerant gas at the outlet of the compressor 1 is divided into two paths. One path distributes a certain flow of refrigerant to the third plate heat exchanger 5 through the first electronic expansion valve 11, and exchanges heat with the refrigerator circuit coolant to heat the refrigerator. The other path distributes a certain flow of refrigerant to the first plate heat exchanger 2 through the second electronic expansion valve 12, and exchanges heat with the coolant side and becomes liquid after cooling. After coming out, it merges with the refrigerant coming out of the third plate heat exchanger 5 after passing through the first check valve 16. After coming out, it is throttled by the fourth electronic expansion valve 14 to become a low-temperature and low-pressure two-phase refrigerant and enters the second plate heat exchanger 4, exchanges heat with the coolant side and cools the cooled object 10. The low-temperature and low-pressure refrigerant flowing out enters the compressor 1 and starts a new cycle. The first electronic water pump 6 runs to provide circulation power for the coolant. The coolant heated by the high-temperature refrigerant flows out and enters the first electronic water pump 6. After coming out, it exchanges heat with the heat-releasing object 9 and heats it to realize the heating function. The coolant flowing out enters the first plate heat exchanger 2 and starts a new cycle. The second electronic water pump 7 operates to provide circulation power for the coolant. The coolant cooled by the low-temperature refrigerant flows out into the cooled object 10 for cooling, and then enters the second electronic water pump 7 to start a new cycle. The third electronic water pump 8 operates to provide circulation power for the coolant. The coolant heated by the high-temperature refrigerant flows out into the refrigerator 18 for heating, and then enters the third electronic water pump 8 to start a new cycle.

[0084] Here, the present invention can realize the functions of "passenger cabin heating + refrigerator heating".

[0085] The second aspect of the present invention also includes that the high-temperature refrigerant flowing out of the compressor 1 enters the heat exchanger (herein the third plate heat exchanger 5) in the refrigerator side loop through an electronic expansion valve (herein the first electronic expansion valve 11) for heat exchange, thereby achieving refrigerator heating.

[0086] Specifically, Fig. 9 As shown, it corresponds to function eight of the present invention: the first electronic expansion valve 11 is fully open, the second electronic expansion valve 12 is closed, the third electronic expansion valve 13 is closed, the fourth electronic expansion valve 14 is throttled, the fifth electronic expansion valve 15 is closed, the electromagnetic stop valve 17 is closed, the first electronic water pump 6 is closed, the second electronic water pump 7 is working, and the third electronic water pump 8 is working.

[0087] The high-temperature and high-pressure refrigerant gas at the outlet of the compressor 1 enters the third plate heat exchanger 5 through the fully opened first electronic expansion valve 11, exchanges heat with the coolant side and becomes liquid after cooling, flows through the first one-way valve 16 after exiting, and becomes low-temperature and low-pressure two-phase refrigerant after throttling through the fourth electronic expansion valve 14, enters the second plate heat exchanger 4, exchanges heat with the coolant side and cools the cooled object 10, and the low-temperature and low-pressure refrigerant flows out into the compressor 1, starting a new cycle. The second electronic water pump 7 runs to provide circulation power for the coolant, and the coolant cooled by the low-temperature refrigerant flows out into the cooled object 10 for cooling, and then enters the second electronic water pump 7 after exiting, starting a new cycle. The third electronic water pump 8 runs to provide circulation power for the coolant, and the coolant heated by the high-temperature refrigerant flows out into the refrigerator 18 for heating, and then enters the third electronic water pump 8 after exiting, starting a new cycle.

[0088] Here, the present invention can realize the "refrigerator heating" function.

[0089] In one embodiment of the present invention, Fig.10 As shown, it corresponds to function nine of the present invention: the first electronic expansion valve 11 is closed, the second electronic expansion valve 12 is fully opened, the third electronic expansion valve 13 is closed, the fourth electronic expansion valve 14 is throttled, the fifth electronic expansion valve 15 is throttled, the electromagnetic stop valve 17 is opened, the first electronic water pump 6 is working, the second electronic water pump 7 is working, and the third electronic water pump 8 is working.

[0090] The high-temperature and high-pressure refrigerant gas at the outlet of the compressor 1 enters the first plate heat exchanger 2 through the fully opened second electronic expansion valve 12 to exchange heat with the coolant side and become liquid after cooling. After exiting, it is divided into two paths. One path is throttled by the fifth electronic expansion valve 15 to become a low-temperature and low-pressure two-phase refrigerant and enters the third plate heat exchanger 5 to exchange heat with the refrigerator circuit coolant to cool the refrigerator. The other path is throttled by the fourth electronic expansion valve 14 to become a low-temperature and low-pressure two-phase refrigerant and enter the second plate heat exchanger 4 to exchange heat with the coolant side and cool the cooled object 10. The low-temperature and low-pressure refrigerant flowing out and the refrigerant flowing out from the third plate heat exchanger 5 are combined through the electromagnetic stop valve 17 and the second check valve 19 and enter the compressor 1 to start a new cycle. The first electronic water pump 6 runs to provide circulation power for the coolant. The coolant heated by the high-temperature refrigerant flows out and enters the first electronic water pump 6. After exiting, it exchanges heat with the heat-releasing object 9 and heats it to realize the heating function. The coolant flowing out enters the first plate heat exchanger 2 to start a new cycle. The second electronic water pump 7 operates to provide circulation power for the coolant. The coolant cooled by the low-temperature refrigerant flows out into the cooled object 10 for cooling, and then enters the second electronic water pump 7 to start a new cycle. The third electronic water pump 8 operates to provide circulation power for the coolant. The coolant cooled by the low-temperature refrigerant flows out into the refrigerator 18 for cooling, and then enters the third electronic water pump 8 to start a new cycle.

[0091] Here, the present invention can realize the functions of "passenger cabin heating + refrigerator cooling".

[0092] like Fig.11 As shown, in one embodiment of the present invention, as an alternative method, the refrigerant is directly introduced into the refrigerator 19 to directly cool and heat the refrigerator, and the third electronic water pump 8 and the third plate heat exchanger 5 are eliminated.

[0093] Here, the present invention realizes refrigerant heating or coolant cooling through the third plate heat exchanger 5, and then circulates the heated or cooled coolant to the refrigerator through the third electronic water pump 8, thereby realizing cooling and heating of the refrigerator.

[0094] In one embodiment of the present invention, as an alternative, the first electronic expansion valve 11 and the second electronic expansion valve 12 are replaced by other multi-way valves such as a three-way proportional regulating valve to achieve refrigerant flow distribution. After the present invention shows the basic operating principle, those skilled in the art can simply replace one of the parts or a combination of two or more parts, which all fall within the scope of protection of the present invention.

[0095] like Fig.12 As shown, the fourth aspect of the present invention provides a control method for a vehicle thermal management system based on any one of the above embodiments, comprising: Step S110: obtaining a target temperature of a refrigerator, where the refrigerator is a vehicle-mounted refrigerator; Step S120: According to the target temperature, the working states of the compressor, the refrigerator, the multiple electronic expansion valves and the multiple heat exchangers are controlled to adjust the temperature of the vehicle refrigerator.

[0096] Here, by obtaining the target temperature of the car refrigerator, the refrigerator temperature can be accurately controlled according to user needs to improve the user experience; by controlling the working status of multiple components according to the target temperature, the operation of the entire thermal management system can be coordinated, energy distribution can be optimized, and system efficiency can be improved; by centrally controlling components such as the compressor, refrigerator, electronic expansion valve and heat exchanger, the car refrigerator and the vehicle thermal management system can be intelligently integrated to reduce the space occupation and energy consumption caused by the independent system; by flexibly adjusting the temperature of the car refrigerator, it can adapt to different usage scenarios and environmental conditions, thereby enhancing the adaptability of the system; by accurately controlling the working status of each component, it can reduce energy consumption while ensuring the refrigeration effect and extend the service life of the system.

[0097] A fifth aspect of the present invention provides a vehicle-mounted refrigerator, comprising: Cold room; A heat exchanger (herein, the third plate heat exchanger 5) thermally connected to the refrigerator compartment, the heat exchanger being in the refrigerator side circuit; wherein the heat exchanger is thermally connected to a vehicle thermal management circuit, the vehicle thermal management circuit comprising a compressor 1, a plurality of electronic expansion valves and a plurality of heat exchangers, wherein there is a heat exchanger that is thermally connected to the refrigerator compartment; The heat exchanger realizes cooling or heating of the refrigerated compartment by thermally connecting with the vehicle thermal management circuit.

[0098] like Fig.12 As shown, the sixth aspect of the present invention provides a control method for the vehicle refrigerator based on the fifth aspect of the present invention, comprising: Step S210: Detecting and acquiring a target temperature of the refrigerator 18 based on the current temperature of the refrigerating chamber, wherein the refrigerator 18 is a vehicle-mounted refrigerator; Step S220: According to the target temperature, the operating states of the compressor 1, the refrigerator 18, the multiple electronic expansion valves and the multiple heat exchangers are controlled to adjust the temperature of the vehicle refrigerator.

[0099] Here, the vehicle refrigerator or the control method based on the vehicle refrigerator provided by the present invention can realize the integration of the thermal management system of the refrigerator and other components of the vehicle by thermally connecting the vehicle refrigerator to the vehicle thermal management circuit, which can improve the thermal management efficiency of the whole vehicle to a certain extent and reduce the space occupation and weight increase caused by the independent system; using the existing thermal management circuit of the vehicle to provide refrigeration or heating function for the refrigerator may reduce the manufacturing cost and energy consumption of the refrigerator, and at the same time may reduce the noise generated by the operation of the independent compressor, improve the comfort in the vehicle, realize the intelligent integration of the refrigerator and the vehicle thermal management system, optimize energy distribution, improve system operation efficiency and improve user experience, correspondingly increase the effective storage volume of the refrigerator, and improve the utilization rate of the space in the vehicle.

[0100] A seventh aspect of the present invention is an electric vehicle, comprising an electric vehicle thermal management system or a refrigerator as described in any one of the above embodiments.

[0101] like Fig.13 As shown, the eighth aspect of the present invention provides an electronic device, including: At least one processor; and at least one memory in communication with the processor, wherein: the memory stores program instructions that can be executed by the processor, and the processor calls the program instructions to execute the steps of the method described in any one of the above embodiments.

[0102] A ninth aspect of the present invention discloses a readable storage medium storing a computer program, wherein the computer program is executed by a processor to perform the steps of the method described in any one of the above embodiments.

[0103] Computer-readable storage media may include: any entity or device capable of carrying a computer program, a recording medium, a USB flash drive, a mobile hard disk, a magnetic disk, an optical disk, a computer memory, a read-only memory (ROM), a random access memory (RAM), and a software distribution medium, etc. A computer program includes a computer program code. The computer program code may be in source code form, object code form, an executable file, or some intermediate form, etc. A computer-readable storage medium may include: any entity or device capable of carrying a computer program code, a recording medium, a USB flash drive, a mobile hard disk, a magnetic disk, an optical disk, a computer memory, a read-only memory (ROM), a random access memory (RAM), and a software distribution medium, etc.

[0104] Any process or method description in a flowchart or otherwise described herein may be understood to represent a module, segment or portion of code that includes one or more executable instructions for implementing the steps of a specific logical function or process, and the scope of the preferred embodiments of the present invention includes alternative implementations in which functions may not be performed in the order shown or discussed, including performing functions in a substantially simultaneous manner or in the reverse order depending on the functions involved, which should be understood by those skilled in the art to which the embodiments of the present invention belong.

[0105] The logic and / or steps represented in the flowchart or otherwise described herein, for example, can be considered as an ordered list of executable instructions for implementing logical functions, and can be embodied in any computer-readable medium for use by an instruction execution system, apparatus or device (such as a computer-based system, a system including a processing module, or other system that can fetch instructions from an instruction execution system, apparatus or device and execute instructions), or used in combination with these instruction execution systems, apparatuses or devices.

[0106] Systems and methods have been generally described herein as details that aid in understanding the present invention. In addition, various specific details have been given to provide an overall understanding of embodiments of the present invention. However, those skilled in the relevant art will recognize that embodiments of the present invention may be practiced without one or more of the specific details, or may be practiced using other devices, systems, accessories, methods, components, materials, parts, etc. In other cases, well-known structures, materials, and / or operations are not specifically shown or described in detail to avoid confusion with various aspects of embodiments of the present invention.

[0107] Thus, although the invention has been described herein with reference to specific embodiments thereof, freedom of modification, various changes and substitutions are also within the foregoing disclosure, and it should be understood that in some cases, some features of the invention will be employed without the corresponding use of other features without departing from the scope and spirit of the proposed invention. Thus, many modifications may be made to adapt a particular environment or material to the essential scope and spirit of the invention. The invention is not intended to be limited to the specific terms used in the claims below and / or the specific embodiments disclosed as the best mode contemplated for carrying out the invention, but the invention will include any and all embodiments and equivalents falling within the scope of the appended claims. Thus, the scope of the invention will be determined solely by the appended claims.

Claims

1. A vehicle thermal management system, characterized in that: include: A compressor, a heat-releasing object, a passenger compartment evaporator, a plurality of electronic expansion valves, and a plurality of heat exchangers, wherein at least one heat exchanger is located in a heat-releasing object side circuit; The high-temperature refrigerant flowing out of the compressor enters the heat exchanger in the heat release side circuit through an electronic expansion valve for heat exchange to obtain low-temperature refrigerant. The low-temperature refrigerant enters the passenger compartment evaporator through another electronic expansion valve to achieve passenger compartment cooling.

2. A vehicle thermal management system, characterized in that: include: A compressor, a refrigerator, a plurality of electronic expansion valves and a plurality of heat exchangers, wherein at least one heat exchanger is located in a refrigerator side circuit; The high-temperature refrigerant flowing out of the compressor enters the heat exchanger in the refrigerator side loop through an electronic expansion valve to exchange heat, thereby achieving heating of the refrigerator; and / or The high-temperature refrigerant gas flowing out of the compressor enters a heat exchanger through an electronic expansion valve for heat exchange to obtain a low-temperature refrigerant. The low-temperature refrigerant enters the heat exchanger in the refrigerator side loop through another electronic expansion valve for heat exchange cooling to achieve refrigerator refrigeration.

3. The vehicle thermal management system according to claim 1, characterized in that: Also included is a heat-dissipating object and / or a cooled object; the heat-dissipating object is a heat exchanger that performs heat exchange with the environment and / or a heat exchanger that performs heat exchange with the passenger compartment; The object to be cooled may be a battery, an electric drive, or a heat exchanger for exchanging heat with the environment.

4. The vehicle thermal management system according to claim 2, characterized in that: It also includes a passenger compartment evaporator, and at least one heat exchanger is located in the heat release object side circuit; The high-temperature refrigerant flowing out of the compressor enters the heat exchanger in the heat release side circuit through an electronic expansion valve for heat exchange to obtain low-temperature refrigerant. The low-temperature refrigerant enters the passenger compartment evaporator through another electronic expansion valve to achieve passenger compartment cooling.

5. The vehicle thermal management system according to claim 3, characterized in that: It also includes a cooled object, and at least one heat exchanger is located in a circuit on the cooled object side; The high-temperature refrigerant flowing out of the compressor enters the heat exchanger in the circuit of the heat-releasing object through an electronic expansion valve for heat exchange to obtain low-temperature refrigerant. The low-temperature refrigerant enters the heat exchanger in the circuit of the cooled object through another electronic expansion valve to cool the cooled object.

6. The vehicle thermal management system according to claim 2, characterized in that: It also includes a plurality of electronic water pumps, at least one of which is located in the circuit on the side of the heat release object, and at least one of which is located in the circuit on the side of the refrigerator; When achieving refrigerator refrigeration: The electronic water pump in the circuit on the heat release object side runs to provide circulation power for the coolant. The coolant heated by the high-temperature refrigerant flows out and enters the electronic water pump in the circuit on the heat release object side. After coming out, it exchanges heat with the heat release object. The cooled coolant enters the heat exchanger in the circuit on the heat release object side, and a new cycle begins; the electronic water pump in the circuit on the refrigerator side runs to provide circulation power for the coolant. The coolant cooled by the low-temperature refrigerant flows out and enters the refrigerator for cooling. After coming out, it enters the electronic water pump in the circuit on the refrigerator side, and a new cycle begins.

7. The vehicle thermal management system according to claim 2, characterized in that: It also includes a plurality of electronic water pumps, at least one of which is located in the cooling object side circuit, and at least one of which is located in the refrigerator side circuit; When heating the refrigerator: The electronic water pump in the circuit on the cooled object side runs to provide circulation power for the coolant. The coolant cooled by the low-temperature refrigerant flows out into the cooled object for cooling, and then comes out and enters the electronic water pump in the circuit on the cooled object side to start a new cycle. The electronic water pump in the circuit on the refrigerator side runs to provide circulation power for the coolant. The coolant heated by the high-temperature refrigerant flows out into the refrigerator for heating, and then comes out and enters the electronic water pump in the circuit on the refrigerator side to start a new cycle.

8. The vehicle thermal management system according to claim 2, characterized in that: It also includes a plurality of electronic water pumps, wherein at least one electronic water pump is located in the circuit of the object to be heated, at least one electronic water pump is located in the circuit of the object to be cooled, and at least one heat exchanger is located in the circuit of the object to be heated; When heating the passenger compartment: The high-temperature refrigerant flowing out of the compressor enters the heat exchanger in the circuit of the heat releasing object side through an electronic expansion valve for heat exchange to obtain low-temperature refrigerant, and the low-temperature refrigerant enters the heat exchanger in the circuit of the cooled object side through another electronic expansion valve; the electronic water pump in the circuit of the heat releasing object side runs to provide circulation power for the coolant, and the coolant heated by the high-temperature refrigerant flows out and enters the electronic water pump in the circuit of the heat releasing object side, and exchanges heat with the heat releasing object after coming out and heats the heat releasing object; the flowing coolant enters the heat exchanger in the circuit of the heat releasing object side to start a new cycle; the electronic water pump in the circuit of the cooled object side runs to provide circulation power for the coolant, and the coolant cooled by the low-temperature refrigerant flows out and enters the cooled object for cooling, and enters the electronic water pump in the circuit of the cooled object side to start a new cycle.

9. A vehicle thermal management system, characterized in that: The device comprises a compressor, a heat-releasing object, a plurality of electronic expansion valves, a plurality of heat exchangers and a plurality of water pumps, wherein at least one heat exchanger is located in a circuit on the heat-releasing object side, and at least one electronic water pump is located in a circuit on the heat-releasing object side; The high-temperature refrigerant flowing out of the compressor enters the heat exchanger in the circuit of the heat releasing object side through an electronic expansion valve for heat exchange to obtain low-temperature refrigerant, and the low-temperature refrigerant enters the heat exchanger in the circuit of the cooled object side through another electronic expansion valve; the electronic water pump in the circuit of the heat releasing object side runs to provide circulation power for the coolant, and the coolant heated by the high-temperature refrigerant flows out and enters the electronic water pump in the circuit of the heat releasing object side, and after coming out, it exchanges heat with the heat releasing object and heats the heat releasing object.

10. A control method for a vehicle thermal management system based on any one of claims 1 to 9, characterized in that: include: Obtaining a target temperature of a refrigerator, wherein the refrigerator is a vehicle-mounted refrigerator; According to the target temperature, the working states of the compressor, the refrigerator, the plurality of electronic expansion valves and the plurality of heat exchangers are controlled to adjust the temperature of the vehicle refrigerator.

11. A vehicle refrigerator, characterized in that: include: Cold room; a heat exchanger thermally connected to the refrigerator compartment, the heat exchanger being in a refrigerator-side loop; wherein the heat exchanger is thermally connected to a vehicle thermal management circuit, the vehicle thermal management circuit comprising a compressor, a plurality of electronic expansion valves and a plurality of heat exchangers, wherein there is a heat exchanger that is thermally connected to the refrigeration chamber; The heat exchanger realizes cooling or heating of the refrigerated compartment by thermally connecting with the vehicle thermal management circuit.

12. A control method for a vehicle refrigerator according to claim 11, characterized in that: include: Detect and obtain the target temperature of the refrigerator based on the current temperature of the refrigerator compartment; According to the target temperature, the working states of the compressor, the refrigerator, the plurality of electronic expansion valves and the plurality of heat exchangers are controlled to adjust the temperature of the vehicle refrigerator.

13. An electric vehicle, characterized in that: It includes the electric vehicle thermal management system according to any one of claims 1 to 9 or the vehicle refrigerator according to claim 11.

14. An electronic device, characterized in that: include: at least one processor; And at least one memory communicatively connected to the processor, wherein: the memory stores program instructions executable by the processor, and the processor calls the program instructions to execute the steps of the method as described in any one of claims 10 or 12.

15. A readable storage medium storing a computer program, characterized in that: The computer program is used by a processor to execute the steps of the method according to claim 10 or 12.

Images