Thermal management system, vehicle and method

Abstract

The invention relates to a thermal management system, a vehicle and a method. The heat management system comprises a first compressor, a condenser assembly and an evaporator assembly which are sequentially connected end to end. The temperature control device is provided with a heat exchange pipeline, and the condenser assembly, the heat exchange pipeline, the second compressor and the first compressor are sequentially connected. According to the heat management system disclosed by the embodiment of the invention, the pressure of the refrigerant flowing out of the heat exchange pipeline is greater than or equal to that of the refrigerant flowing out of the evaporator assembly, so that the refrigerant can stably flow out of the heat exchange pipeline without being influenced by the pressure of the refrigerant flowing out of the evaporator assembly; the refrigerant of the second temperature adjusting loop can be stably circulated, and the working stability of the temperature control equipment is improved.

Description

Technical Field

[0001] The present application relates to the field of temperature regulation technology, and in particular to a thermal management system, a vehicle and a method. Background Art

[0002] Temperature control equipment such as air conditioners and refrigerators are mainly used to adjust the temperature of the external environment or their own internal space, and their working principles are basically the same.

[0003] A thermal management system, such as a thermal management system for a vehicle, may include at least two temperature control devices, namely an air conditioner and a refrigerator.

[0004] The working stability of some temperature control equipment in the thermal management system of related technologies needs to be improved. Summary of the invention

[0005] The embodiments of the present application provide a thermal management system, which effectively improves the working stability of the temperature control device, so as to at least partially solve the above-mentioned technical problems.

[0006] In order to achieve the above object, according to a first aspect of the present application, a thermal management system is provided, comprising:

[0007] A first compressor, a condenser assembly and an evaporator assembly connected end to end in sequence;

[0008] A temperature control device and a second compressor, wherein the temperature control device is provided with a heat exchange pipeline, and the condenser assembly, the heat exchange pipeline, the second compressor and the first compressor are connected in sequence.

[0009] Optionally, the thermal management system also includes a first pressure detecting component and a second pressure detecting component, the first pressure detecting component is arranged between the heat exchange pipeline and the first compressor, and the first pressure detecting component is used to detect the pressure of the refrigerant flowing out through the heat exchange pipeline, and the second pressure detecting component is arranged between the evaporator assembly and the first compressor, and the second pressure detecting component is used to detect the pressure of the refrigerant flowing out through the evaporator assembly.

[0010] Optionally, the second compressor, the condenser assembly and the heat exchange pipeline are connected in sequence.

[0011] Optionally, the thermal management system further comprises a first valve and a second valve;

[0012] The first connection port of the first valve is connected to the inlet of the condenser assembly, and the third connection port of the first valve is connected to the first connection port of the second valve;

[0013] The second connecting port of the second valve is connected to the outlet of the second compressor.

[0014] Optionally, the first compressor, the heat exchange pipeline and the evaporator assembly are connected in sequence.

[0015] Optionally, the thermal management system also includes a third valve, a first connection port of the third valve is connected to the outlet of the first compressor, a second connection port of the third valve is connected to the first end of the heat exchange pipeline, and a second end of the heat exchange pipeline is connected to the inlet of the evaporator assembly.

[0016] Optionally, the second compressor, the heat exchange pipeline and the evaporator assembly are connected end to end in sequence.

[0017] Optionally, the thermal management system further includes a second valve, a third valve and a fourth valve;

[0018] The first connecting port of the second valve is connected to the first connecting port of the third valve, and the second connecting port of the second valve is connected to the outlet of the second compressor;

[0019] The second connection port of the third valve is connected to the first end of the heat exchange pipeline, the third connection port of the third valve is connected to the first connection port of the fourth valve, and the fourth outlet of the third valve is connected to the inlet of the second compressor;

[0020] The second connecting port of the fourth valve is connected to the outlet of the evaporator assembly.

[0021] Optionally, the thermal management system further includes a first expansion valve, and the condenser assembly, the first expansion valve and the heat exchange pipeline are connected in sequence.

[0022] Optionally, the thermal management system further includes a second expansion valve, and the condenser assembly, the second expansion valve and the evaporator assembly are connected in sequence.

[0023] Optionally, the thermal management system further includes a first on-off valve, the condenser assembly, the first on-off valve and the heat exchange pipeline are connected in sequence, and the first on-off valve is used to open and close the condenser assembly and the heat exchange pipeline.

[0024] Optionally, the thermal management system further includes a second on-off valve, the condenser assembly, the second on-off valve and the evaporator assembly are connected in sequence, and the second on-off valve is used to switch the condenser assembly and the evaporator assembly on and off.

[0025] Optionally, the inlet of the heat exchange pipeline is connected to the condenser assembly, the outlet of the heat exchange pipeline is connected to the first compressor, and the cross-sectional area of ​​the outlet is larger than the cross-sectional area of ​​the inlet.

[0026] Optionally, the temperature control device includes a box body, a thermal insulation component and the heat exchange pipeline, the box body forms a accommodating cavity, an installation cavity is formed between the outer wall of the box body and the inner wall of the box body, the heat exchange pipeline abuts against the inner wall of the box body, and the thermal insulation component is arranged in the installation cavity.

[0027] Optionally, the thermal insulation component is a phase-change thermal insulation material; or, the thermal insulation component is an exhaust phase-change material.

[0028] According to a second aspect of the present application, a vehicle is provided, comprising the thermal management system as described above.

[0029] Optionally, the vehicle further comprises a cooling assembly capable of exchanging heat with the thermal management system.

[0030] Optionally, the cooling assembly includes at least one of a motor cooling assembly, an engine cooling assembly, and an electronic control cooling assembly.

[0031] Optionally, the vehicle further includes a vehicle body having a cabin, and the second compressor is disposed outside the cabin.

[0032] According to a third aspect of the present application, a thermal management method is also provided, comprising:

[0033] Controlling the first compressor, the condenser assembly and the evaporator assembly to be connected in sequence to form a first loop;

[0034] The condenser assembly, the heat exchange pipeline, the second compressor and the first compressor are controlled to be connected in sequence to form a second loop.

[0035] Optionally, after the step of controlling the condenser assembly, the heat exchange pipeline, the second compressor and the first compressor to be connected in sequence to form a second loop, the thermal management method further includes:

[0036] Acquiring a first pressure of the refrigerant flowing out through the heat exchange pipeline, and acquiring a second pressure of the refrigerant flowing out through the evaporator assembly;

[0037] Based on the first pressure and the second pressure, operation of the second compressor is controlled.

[0038] In the thermal management system of the embodiment of the present application, the first compressor, the condenser assembly and the evaporator assembly are connected in sequence, and the first compressor, the condenser assembly and the evaporator assembly can form a first temperature regulation loop. The condenser assembly, the heat exchange pipeline, the second compressor and the first compressor are connected in sequence to form a second temperature regulation loop to achieve temperature regulation of the temperature control device, and the second temperature regulation loop and the first temperature regulation loop share the first compressor and the condenser assembly, thereby achieving reuse of the first compressor and the condenser assembly.

[0039] At the same time, by arranging a second compressor between the heat exchange pipeline and the first compressor, the second compressor can be used to adjust the pressure of the refrigerant flowing to the first compressor through the heat exchange pipeline, so that the pressure of the refrigerant flowing out through the heat exchange pipeline is greater than or equal to the pressure of the refrigerant flowing out through the evaporator assembly, so that the refrigerant can flow out of the heat exchange pipeline stably without being affected by the pressure of the refrigerant flowing out of the evaporator assembly, thereby ensuring that the refrigerant in the second temperature regulation circuit can circulate stably, thereby improving the working stability of the temperature control equipment.

[0040] Other features and advantages of the present application will be described in detail in the subsequent detailed description. BRIEF DESCRIPTION OF THE DRAWINGS

[0041] In order to more clearly illustrate the technical solutions in the embodiments of the present application, the following briefly introduces the drawings required for use in the description of the embodiments. Obviously, the drawings described below are only some embodiments of the present application, and those skilled in the art can obtain other drawings based on these drawings without creative work.

[0042] In order to more completely understand the present application and its beneficial effects, the following description will be given in conjunction with the accompanying drawings, wherein the same figure numbers represent the same parts in the following description.

[0043] Figure 1 is one of the structural schematic diagrams of a thermal management system provided in an exemplary embodiment of the present disclosure;

[0044] Figure 2 It is a schematic diagram of the structure of a thermal management system when a temperature control device is used for cooling alone in an exemplary embodiment of the present disclosure;

[0045] Figure 3 is the second structural schematic diagram of the thermal management system provided in the exemplary embodiment of the present disclosure;

[0046] Figure 4 is a schematic diagram of the structure of a thermal management system when a temperature control device provides heating alone in an exemplary embodiment of the present disclosure;

[0047] Figure 5 is one of the structural schematic diagrams of the temperature control device provided in the exemplary embodiment of the present disclosure;

[0048] Figure 6 is the second structural schematic diagram of the temperature control device provided in the exemplary embodiment of the present disclosure;

[0049] Figure 7 is a flowchart of the steps of a thermal management method provided in an exemplary embodiment of the present disclosure.

[0050] Description of reference numerals:

[0051] 1. First compressor; 2. Condenser assembly; 3. Evaporator assembly; 4. Temperature control device; 5. Second compressor; 6. First pressure detection component; 7. Second pressure detection component; 8. First valve; 9. Second valve; 10. Third valve; 11. Fourth valve; 12. First expansion valve; 13. Second expansion valve; 14. First on-off valve; 15. Second on-off valve; 41. Heat exchange pipeline; 42. Box; 43. Insulation component; 44. Installation cavity; 421. Accommodation cavity. DETAILED DESCRIPTION

[0052] The technical solutions in the embodiments of the present application will be described clearly and completely 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.

[0053] According to the first aspect of the present application, refer to Figures 1 to 7 The present application provides a thermal management system, comprising a first compressor 1, a condenser assembly 2 and an evaporator assembly 3 connected end to end in sequence. The thermal management system also includes a temperature control device 4 and a second compressor 5, the temperature control device 4 is provided with a heat exchange pipeline 41, and the condenser assembly 2, the heat exchange pipeline 41, the second compressor 5 and the first compressor 1 are connected in sequence.

[0054] It can be understood that the first compressor 1, the condenser assembly 2 and the evaporator assembly 3 are connected in sequence, and the first compressor 1, the condenser assembly 2 and the evaporator assembly 3 can form a first temperature regulation loop. The condenser assembly 2, the heat exchange pipeline 41, the second compressor 5 and the first compressor 1 are connected in sequence to form a second temperature regulation loop to achieve temperature regulation of the temperature control device 4, and the second temperature regulation loop and the first temperature regulation loop share the first compressor 1 and the condenser assembly 2, thereby achieving reuse of the first compressor 1 and the condenser assembly 2.

[0055] At the same time, by arranging a second compressor 5 between the heat exchange pipeline 41 and the first compressor 1, the second compressor 5 can be used to adjust the pressure of the refrigerant flowing from the heat exchange pipeline 41 to the first compressor 1, so that the pressure of the refrigerant flowing out of the heat exchange pipeline 41 is greater than or equal to the pressure of the refrigerant flowing out of the evaporator component 3, so that the refrigerant can flow out of the heat exchange pipeline 41 stably without being affected by the pressure of the refrigerant flowing out of the evaporator component 3, thereby ensuring that the refrigerant in the second temperature regulation circuit can circulate stably, thereby improving the working stability of the temperature control device 4.

[0056] In some examples, the first compressor 1 , the condenser assembly 2 , and the evaporator assembly 3 are, for example, components of an air conditioning system of a vehicle, and the temperature control device 4 is, for example, a vehicle refrigerator.

[0057] In some examples, the condenser assembly 2 includes an in-vehicle condenser and an out-vehicle condenser. When the thermal management system is in a cooling state, the refrigerant passes through the out-vehicle condenser. When the thermal management system is in a heating state, the refrigerant passes through the in-vehicle condenser.

[0058] In some examples, the evaporator assembly 3 includes an in-vehicle evaporator and an out-vehicle evaporator. When the thermal management system is in a cooling state, the refrigerant passes through the in-vehicle evaporator. When the thermal management system is in a heating state, the refrigerant passes through the out-vehicle evaporator.

[0059] In this application, the car refrigerator can share the compressor with the air conditioning system. Since the car refrigerator itself has a low cooling / heating demand, it has little impact on the operation of the air conditioning system, and reduces energy consumption compared to refrigerators with independent compressors. At the same time, since the work of the compressor of the air conditioning system and the heat exchange of the condenser / evaporator required for heat exchange are both outside the passenger compartment, the impact on the comfort of the passenger compartment is less than that of a car refrigerator using an independent compressor and semiconductor refrigeration.

[0060] Under freezing conditions, by adding a second compressor 5 at the outlet of the heat exchange pipeline 41 of the vehicle refrigerator, the low-pressure refrigerant discharged from the heat exchange pipeline 41 of the vehicle refrigerator is pressurized to the inlet pressure level of the first compressor 1 of the air-conditioning system, so that the low-temperature cycle on the vehicle refrigerator side can operate stably. Since the outlet pressure difference between the heat exchange pipeline 41 of the vehicle refrigerator and the inlet pressure of the air-conditioning compressor is small, the second compressor 5 is a small compressor with a relatively low working pressure increase, and only extremely low speed and power consumption are required to ensure the operation of the system, and the noise generated in the passenger compartment has little impact.

[0061] In some embodiments, see Figure 1 The thermal management system also includes a first pressure detection component 6 and a second pressure detection component 7. The first pressure detection component 6 is arranged between the heat exchange pipeline 41 and the first compressor 1, and the first pressure detection component 6 is used to detect the pressure of the refrigerant flowing out through the heat exchange pipeline 41. The second pressure detection component 7 is arranged between the evaporator assembly 3 and the first compressor 1, and the second pressure detection component 7 is used to detect the pressure of the refrigerant flowing out through the evaporator assembly 3.

[0062] It is understandable that the first pressure detection component 6 can obtain the pressure of the refrigerant flowing to the first compressor 1 through the heat exchange pipeline 41, and the second pressure detection component 7 can obtain the pressure of the refrigerant flowing to the first compressor 1 through the evaporator assembly 3. By comparing the detection data of the first pressure detection component 6 and the second pressure detection component 7, it can be determined whether the pressure of the refrigerant flowing out through the heat exchange pipeline 41 is greater than or equal to the pressure of the refrigerant flowing out through the evaporator assembly 3.

[0063] When it is determined that the pressure of the refrigerant flowing out through the heat exchange pipeline 41 is greater than or equal to the pressure of the refrigerant flowing out through the evaporator assembly 3 , the second compressor 5 is not started.

[0064] When it is determined that the pressure of the refrigerant flowing out through the heat exchange pipeline 41 is lower than the pressure of the refrigerant flowing out through the evaporator assembly 3, the second compressor 5 is started and the second compressor 5 is used to increase the pressure of the refrigerant flowing out through the heat exchange pipeline 41 to ensure that the refrigerant can flow smoothly from the heat exchange pipeline 41 to the first compressor 1.

[0065] In some embodiments, see Figure 2 , the second compressor 5, the condenser assembly 2 and the heat exchange pipeline 41 are connected in sequence.

[0066] It can be understood that when the first compressor 1 is not working and the temperature control device 4 is needed for cooling, the second compressor 5, the condenser assembly 2 and the heat exchange pipeline 41 can be connected in sequence, and the refrigerant compressed by the second compressor 5 flows into the external condenser of the condenser assembly 2 for heat dissipation. Thereafter, the refrigerant flows through the heat exchange pipeline 41 to absorb heat, and then the refrigerant enters the second compressor 5 again for the next round of refrigeration cycle, thereby realizing the independent refrigeration of the temperature control device 4.

[0067] In some embodiments, see Figure 2 , the thermal management system further includes a first valve 8 and a second valve 9;

[0068] The first connection port of the first valve 8 is connected to the inlet of the condenser assembly 2, and the third connection port of the first valve 8 is connected to the first connection port of the second valve 9;

[0069] The second connecting port of the second valve 9 is connected to the outlet of the second compressor 5 .

[0070] It can be understood that when the first compressor 1 is not working and the temperature control device 4 is needed for cooling, the first connection port and the third connection port of the first valve 8 are controlled to be connected, and the first connection port and the second connection port of the second valve 9 are controlled to be connected, so that the inlet of the condenser assembly 2 and the outlet of the second compressor 5 are connected, and then the second compressor 5, the condenser assembly 2 and the heat exchange pipeline 41 are connected in sequence, so as to realize the independent cooling of the temperature control device 4.

[0071] In some examples, the second connection port of the first valve 8 is connected to the outlet of the first compressor 1. When the temperature control device 4 is cooling alone, the first connection port of the first valve 8 and the third connection port of the first valve 8 are disconnected from the second connection port of the first valve 8.

[0072] In some examples, the third connection port of the second valve 9 is connected to the inlet of the first compressor 1. When the temperature control device 4 is cooling alone, the first connection port of the second valve 9 and the second connection port of the second valve 9 are both disconnected from the third connection port of the second valve 9.

[0073] In some embodiments, see Figure 3 , the first compressor 1, the heat exchange pipeline 41 and the evaporator assembly 3 are connected in sequence.

[0074] It can be understood that the first compressor 1, the condenser assembly 2 and the evaporator assembly 3 are connected in sequence to form a first heating circuit, and the first compressor 1, the heat exchange pipeline 41 and the evaporator assembly 3 are connected in sequence to the heating circuit. The high-temperature and high-pressure refrigerant flowing out of the first compressor 1 flows to the condenser assembly 2 and the heat exchange pipeline 41 at the same time, and the refrigerant flowing to the condenser assembly 2 and the heat exchange pipeline 41 will flow to the evaporator assembly 3 at the same time, and then the refrigerant returns to the first compressor 1 through the evaporator assembly 3, and then enters the next round of heating cycle. In this way, the joint heating of the first heating circuit and the second heating circuit is realized, and the reuse of the first compressor 1 of the first heating circuit is realized.

[0075] In some embodiments, see Figure 3 The thermal management system also includes a third valve 10, a first connection port of the third valve 10 is connected to the outlet of the first compressor 1, a second connection port of the third valve 10 is connected to the first end of the heat exchange pipeline 41, and a second end of the heat exchange pipeline 41 is connected to the inlet of the evaporator assembly 3.

[0076] It can be understood that by controlling the first connection port of the third valve 10 and the second connection port of the third valve 10 to be connected, so that the outlet of the first compressor 1 is connected to the first end of the heat exchange pipeline 41, the high-temperature and high-pressure refrigerant flowing out of the first compressor 1 can flow to the heat exchange pipeline 41, and then flow to the evaporator assembly 3 through the heat exchange pipeline 41, thereby realizing heating of the temperature control device 4.

[0077] In some embodiments, see Figure 4 The second compressor 5, the heat exchange pipeline 41 and the evaporator assembly 3 are connected end to end in sequence.

[0078] It is understandable that when the first compressor 1 is not working, and the temperature control device 4 needs to heat, the second compressor 5, the heat exchange pipeline 41 and the evaporator assembly 3 are connected in sequence, so that the second compressor 5, the heat exchange pipeline 41, the evaporator assembly 3 and the second compressor 5 form a heating circuit. The high-temperature and high-pressure refrigerant compressed by the first compressor 1 flows through the heat exchange pipeline 41 to achieve heating of the temperature control device 4, and then the refrigerant returns to the second compressor 5 through the evaporator assembly 3, and then the next round of heating cycle is carried out, thereby achieving independent heating of the temperature control device 4.

[0079] In some embodiments, see Figure 4 , the thermal management system further includes a second valve 9, a third valve 10 and a fourth valve 11;

[0080] The first connection port of the second valve 9 is connected to the first connection port of the third valve 10, and the second connection port of the second valve 9 is connected to the outlet of the second compressor 5;

[0081] The second connection port of the third valve 10 is connected to the first end of the heat exchange pipeline 41, the third connection port of the third valve 10 is connected to the first connection port of the fourth valve 11, and the fourth outlet of the third valve 10 is connected to the inlet of the second compressor 5;

[0082] The second connecting port of the fourth valve 11 is connected to the outlet of the evaporator assembly 3 .

[0083] It can be understood that when the first compressor 1 is not working and the temperature control device 4 needs heating, the first connection port of the second valve 9 is controlled to be connected with the second connection port of the second valve 9, and the first connection port and the second connection port of the third valve 10 are controlled to be connected, so that the outlet of the second compressor 5 is connected with the first end of the heat exchange pipeline 41, the first connection port and the second connection port of the fourth valve 11 are controlled to be connected, and the third connection port and the fourth connection port of the third valve 10 are controlled to be connected, so that the outlet of the evaporator assembly 3 is connected with the inlet of the second compressor 5, thereby making the second compressor 5, the heat exchange pipeline 41, the evaporator assembly 3 and the second compressor 5 form a heating circuit to realize independent heating of the temperature control device 4.

[0084] It can be understood that when the temperature control device 4 is heating alone, the first connection port and the second connection port of the third valve 10 are disconnected from the third connection port of the third valve 10, and the first connection port and the second connection port of the third valve 10 are disconnected from the fourth connection port. That is, the first connection port and the second connection port of the third valve 10 are connected to form one flow channel, and the third connection port and the fourth connection port of the third valve 10 are connected to form another flow channel, and the two flow channels are independent of each other.

[0085] In some examples, the third connection port of the second valve 9 is connected to the inlet of the first compressor 1. When the temperature control device 4 heats alone, the first connection port and the second connection port of the second valve 9 are disconnected from the third connection port.

[0086] In some examples, the third connection port of the fourth valve 11 is connected to the inlet of the first compressor 1. When the temperature control device 4 heats alone, the first connection port and the second connection port of the fourth valve 11 are disconnected from the third connection port.

[0087] In some embodiments, see Figure 1 The thermal management system further includes a first expansion valve 12, and the condenser assembly 2, the first expansion valve 12 and the heat exchange pipeline 41 are connected in sequence.

[0088] It is understandable that the first expansion valve 12 can throttle the refrigerant flowing into the heat exchange pipeline 41, reduce the temperature of the refrigerant, and thereby improve the refrigeration effect of the temperature control device 4, so that the temperature control device 4 has a freezing capacity.

[0089] In some embodiments, see Figure 1 The thermal management system further includes a second expansion valve 13, and the condenser assembly 2, the second expansion valve 13 and the evaporator assembly 3 are connected in sequence.

[0090] It is understandable that the second expansion valve 13 can throttle the refrigerant flowing into the evaporator assembly 3 , thereby reducing the temperature of the refrigerant and improving the heat exchange effect between the refrigerant and the evaporator assembly 3 .

[0091] In some embodiments, see Figure 1 The thermal management system also includes a first on-off valve 14 . The condenser assembly 2 , the first on-off valve 14 and the heat exchange pipeline 41 are connected in sequence. The first on-off valve 14 is used to turn on and off the condenser assembly 2 and the heat exchange pipeline 41 .

[0092] It can be understood that the first on-off valve 14 can control the on-off between the condenser assembly 2 and the heat exchange pipeline 41, that is, it can control whether the refrigerant flowing out of the condenser can flow into the heat exchange pipeline 41, and then the first on-off valve 14 can control the formation of different refrigerant circuits to meet different needs.

[0093] In some embodiments, see Figure 1 The thermal management system also includes a second on-off valve 15 , the condenser assembly 2 , the second on-off valve 15 and the evaporator assembly 3 are connected in sequence, and the second on-off valve 15 is used to turn on and off the condenser assembly 2 and the evaporator assembly 3 .

[0094] It can be understood that the second on-off valve 15 can control the on-off between the condenser assembly 2 and the evaporator assembly 3, that is, it can control whether the refrigerant flowing out of the condenser can flow into the evaporator assembly 3, and then the second on-off valve 15 can control the formation of different refrigerant circuits to meet different needs.

[0095] In some embodiments, the inlet of the heat exchange pipeline 41 is connected to the condenser assembly 2, the outlet of the heat exchange pipeline 41 is connected to the first compressor 1, and the cross-sectional area of ​​the outlet is larger than the cross-sectional area of ​​the inlet.

[0096] It is understandable that when the temperature control device 4 is in a cooling state, the refrigerant will flow in from the inlet and out from the outlet. When the temperature control device 4 is in a heating state, the refrigerant will flow in from the outlet and out from the inlet.

[0097] In refrigeration conditions, the refrigerant absorbs heat in the heat exchange pipe 41 and undergoes phase change and gasification, and gradually expands. Setting the cross-sectional area of ​​the outlet to be larger than the cross-sectional area of ​​the inlet can reduce the flow resistance of the refrigerant.

[0098] In heating conditions, the temperature of the refrigerant gradually decreases after flowing through the heat exchange pipeline 41 , and part of the refrigerant begins to liquefy. Setting the cross-sectional area of ​​the outlet to be larger than the cross-sectional area of ​​the inlet can reduce the resistance of the refrigerant flowing into the heat exchange pipeline 41 .

[0099] In some embodiments, see Figure 5 and Figure 6 The temperature control device 4 includes a box body 42, a heat preservation component 43 and a heat exchange pipeline 41. The box body 42 forms a accommodating cavity 421. An installation cavity 44 is formed between the outer wall of the box body 42 and the inner wall of the box body 42. The heat exchange pipeline 41 abuts against the inner wall of the box body 42, and the heat preservation component 43 is arranged in the installation cavity 44.

[0100] It is understandable that the heat exchange pipeline 41 can exchange heat with the inner wall of the box body 42 , and the inner wall of the box body 42 can exchange heat with the accommodating cavity 421 , thereby achieving cooling or heating of the installation cavity 44 .

[0101] By arranging the heat-insulating component 43 in the installation cavity 44 , the heat-insulating component 43 surrounds the accommodating cavity 421 , so that the heat-insulating component 43 can play a role in heat-insulating the accommodating cavity 421 .

[0102] In some examples, the heat-insulating member 43 is a phase-change heat-insulating material. The phase-change material has the property of absorbing and releasing heat at a constant temperature, which can make the temperature control device 4 have a longer heat-insulating time and reduce the start-stop frequency of the first compressor 1 or the second compressor 5.

[0103] The heat preservation member 43 is an evacuated phase change material, so that the cold / heat carried by the refrigerant enters the accommodating cavity 421 of the box body 42 more quickly, thereby realizing rapid cooling / heating.

[0104] According to a second aspect of the present application, the present application provides a vehicle, comprising the above-mentioned thermal management system.

[0105] It can be understood that the first compressor 1, the condenser assembly 2 and the evaporator assembly 3 are connected in sequence, and the first compressor 1, the condenser assembly 2 and the evaporator assembly 3 can form a first temperature regulation loop. The condenser assembly 2, the heat exchange pipeline 41, the second compressor 5 and the first compressor 1 are connected in sequence to form a second temperature regulation loop to achieve temperature regulation of the temperature control device 4, and the second temperature regulation loop and the first temperature regulation loop share the first compressor 1 and the condenser assembly 2, thereby achieving reuse of the first compressor 1 and the condenser assembly 2.

[0106] At the same time, by arranging a second compressor 5 between the heat exchange pipeline 41 and the first compressor 1, the second compressor 5 can be used to adjust the pressure of the refrigerant flowing from the heat exchange pipeline 41 to the first compressor 1, so that the pressure of the refrigerant flowing out of the heat exchange pipeline 41 is greater than or equal to the pressure of the refrigerant flowing out of the evaporator component 3, so that the refrigerant can flow out of the heat exchange pipeline 41 stably without being affected by the pressure of the refrigerant flowing out of the evaporator component 3, thereby ensuring that the refrigerant in the second temperature regulation circuit can circulate stably, thereby improving the working stability of the temperature control device 4.

[0107] In some examples, the vehicle may be a fuel vehicle, a plug-in hybrid vehicle, or a new energy vehicle, etc., and this application does not make specific limitations on this.

[0108] In some embodiments, the vehicle further includes a cooling assembly capable of exchanging heat with the thermal management system.

[0109] It can be understood that the heat exchange between the cooling component and the thermal management system allows the thermal management system to utilize the heat of the cooling component for heating, thereby improving the heating effect of the thermal management system.

[0110] For example, when the thermal management system is in a heating condition, if it is difficult to absorb heat from the air due to the low ambient temperature, the refrigerant flowing to the evaporator component 3 can be passed into the cooling component to obtain heat from the cooling component.

[0111] In some examples, the cooling assembly includes at least one of a motor cooling assembly, an engine cooling assembly, and an electronic control cooling assembly. For example, in a heating condition, if it is difficult to absorb heat from the air due to the low ambient temperature, the refrigerant flowing to the evaporator assembly 3 can be passed into the motor water cooling plate to obtain heat from the motor coolant.

[0112] In some embodiments, the vehicle further includes a vehicle body having a cabin, and the second compressor 5 is disposed outside the cabin, which can effectively reduce the cabin noise when the temperature control device 4 is used for cooling or heating alone, thereby improving the riding experience.

[0113] According to the third aspect of this application, refer to Figure 7 , the present application provides a thermal management method, comprising:

[0114] Step 100, controlling the first compressor 1, the condenser assembly 2 and the evaporator assembly 3 to be connected in sequence to form a first loop;

[0115] Step 200, controlling the condenser assembly 2, the heat exchange pipeline 41, the second compressor 5 and the first compressor 1 to be connected in sequence to form a second loop.

[0116] It can be understood that the first compressor 1, the condenser assembly 2 and the evaporator assembly 3 are connected in sequence, and the first compressor 1, the condenser assembly 2 and the evaporator assembly 3 can form a first loop. The condenser assembly 2, the heat exchange pipeline 41, the second compressor 5 and the first compressor 1 are connected in sequence to form a second loop, so that the temperature control device 4 can use the first compressor 1 and the condenser assembly 2 to adjust the temperature.

[0117] At the same time, the second compressor 5 can be used to adjust the pressure of the refrigerant flowing to the first compressor 1 through the heat exchange pipeline 41, so that the pressure of the refrigerant flowing out through the heat exchange pipeline 41 is greater than or equal to the pressure of the refrigerant flowing out through the evaporator component 3, so that the refrigerant can flow out of the heat exchange pipeline 41 stably without being affected by the pressure of the refrigerant flowing out of the evaporator component 3, thereby ensuring that the refrigerant in the second temperature regulation circuit can circulate stably, thereby improving the working stability of the temperature control device 4.

[0118] In some embodiments, after the step of controlling the condenser assembly 2, the heat exchange pipeline 41, the second compressor 5 and the first compressor 1 to be connected in sequence to form a second loop, the thermal management method further includes:

[0119] Obtaining a first pressure of the refrigerant flowing out through the heat exchange pipeline 41, and obtaining a second pressure of the refrigerant flowing out through the evaporator assembly 3;

[0120] Based on the first pressure and the second pressure, the operation of the second compressor 5 is controlled.

[0121] It is understandable that by comparing the first pressure and the second pressure, it can be determined whether the first pressure of the refrigerant flowing out through the heat exchange pipeline 41 is greater than or equal to the second pressure of the refrigerant flowing out through the evaporator assembly 3 .

[0122] When it is determined that the first pressure of the refrigerant flowing out through the heat exchange pipeline 41 is greater than or equal to the second pressure of the refrigerant flowing out through the evaporator assembly 3 , the second compressor 5 is not started.

[0123] When it is determined that the first pressure of the refrigerant flowing out through the heat exchange pipeline 41 is lower than the second pressure of the refrigerant flowing out through the evaporator assembly 3, the second compressor 5 is started, and the first pressure of the refrigerant flowing out through the heat exchange pipeline 41 is increased by the second compressor 5 to ensure that the refrigerant can flow smoothly from the heat exchange pipeline 41 to the first compressor 1.

[0124] In the description of this application, the terms "first" and "second" are used for descriptive purposes only and should not be understood as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include one or more features. In the description of this application, the meaning of "plurality" is two or more, unless otherwise clearly and specifically defined.

[0125] In the above embodiments, the description of each embodiment has its own emphasis. For parts that are not described in detail in a certain embodiment, reference can be made to the relevant descriptions of other embodiments.

[0126] The embodiments, implementation methods and related technical features of the present application can be combined and replaced with each other without conflict.

[0127] The above are only preferred embodiments of the present application and do not constitute any form of limitation to the present application. However, any simple modifications, equivalent changes and modifications made to the above embodiments based on the technical essence of the present application without departing from the content of the technical solution of the present application are still within the scope of the technical solution of the present application.

Claims

1. A thermal management system, characterized in that: include: A first compressor, a condenser assembly and an evaporator assembly connected end to end in sequence; A temperature control device and a second compressor, wherein the temperature control device is provided with a heat exchange pipeline, and the condenser assembly, the heat exchange pipeline, the second compressor and the first compressor are connected in sequence.

2. The thermal management system according to claim 1, characterized in that: The thermal management system also includes a first pressure detecting component and a second pressure detecting component. The first pressure detecting component is arranged between the heat exchange pipeline and the first compressor, and the first pressure detecting component is used to detect the pressure of the refrigerant flowing out through the heat exchange pipeline. The second pressure detecting component is arranged between the evaporator assembly and the first compressor, and the second pressure detecting component is used to detect the pressure of the refrigerant flowing out through the evaporator assembly.

3. The thermal management system according to claim 1, characterized in that: The second compressor, the condenser assembly and the heat exchange pipeline are connected in sequence.

4. The thermal management system according to claim 3, characterized in that: The thermal management system further includes a first valve and a second valve; The first connection port of the first valve is connected to the inlet of the condenser assembly, and the third connection port of the first valve is connected to the first connection port of the second valve; The second connecting port of the second valve is connected to the outlet of the second compressor.

5. The thermal management system according to claim 1, characterized in that: The first compressor, the heat exchange pipeline and the evaporator assembly are connected in sequence.

6. The thermal management system according to claim 5, characterized in that: The thermal management system also includes a third valve, a first connection port of the third valve is connected to the outlet of the first compressor, a second connection port of the third valve is connected to the first end of the heat exchange pipeline, and a second end of the heat exchange pipeline is connected to the inlet of the evaporator assembly.

7. The thermal management system according to claim 1, characterized in that: The second compressor, the heat exchange pipeline and the evaporator assembly are connected end to end in sequence.

8. The thermal management system according to claim 7, characterized in that: The thermal management system further includes a second valve, a third valve and a fourth valve; The first connecting port of the second valve is connected to the first connecting port of the third valve, and the second connecting port of the second valve is connected to the outlet of the second compressor; The second connection port of the third valve is connected to the first end of the heat exchange pipeline, the third connection port of the third valve is connected to the first connection port of the fourth valve, and the fourth outlet of the third valve is connected to the inlet of the second compressor; The second connecting port of the fourth valve is connected to the outlet of the evaporator assembly.

9. The thermal management system according to any one of claims 1 to 8, characterized in that: The thermal management system further includes a first expansion valve, and the condenser assembly, the first expansion valve and the heat exchange pipeline are connected in sequence.

10. The thermal management system according to any one of claims 1 to 8, characterized in that: The thermal management system further includes a second expansion valve, and the condenser assembly, the second expansion valve and the evaporator assembly are connected in sequence.

11. The thermal management system according to any one of claims 1 to 8, characterized in that: The thermal management system further includes a first on-off valve, the condenser assembly, the first on-off valve and the heat exchange pipeline are connected in sequence, and the first on-off valve is used to open and close the condenser assembly and the heat exchange pipeline.

12. The thermal management system according to any one of claims 1 to 8, characterized in that: The thermal management system further includes a second on-off valve, the condenser assembly, the second on-off valve and the evaporator assembly are connected in sequence, and the second on-off valve is used to switch the condenser assembly and the evaporator assembly on and off.

13. The thermal management system according to any one of claims 1 to 8, characterized in that: The inlet of the heat exchange pipeline is connected to the condenser assembly, the outlet of the heat exchange pipeline is connected to the first compressor, and the cross-sectional area of ​​the outlet is larger than the cross-sectional area of ​​the inlet.

14. The thermal management system according to any one of claims 1 to 8, characterized in that: The temperature control device includes a box body, a heat insulation component and the heat exchange pipeline. The box body forms a accommodating cavity, and an installation cavity is formed between the outer wall of the box body and the inner wall of the box body. The heat exchange pipeline abuts against the inner wall of the box body, and the heat insulation component is arranged in the installation cavity.

15. The thermal management system according to claim 14, characterized in that: The thermal insulation component is a phase-change thermal insulation material; or, the thermal insulation component is an exhaust phase-change material.

16. A vehicle, characterized in that: Comprising a thermal management system as claimed in claims 1 to 15.

17. The vehicle according to claim 16, characterized in that The vehicle also includes a cooling assembly capable of exchanging heat with the thermal management system.

18. The vehicle according to claim 17, characterized in that The cooling assembly includes at least one of a motor cooling assembly, an engine cooling assembly, and an electronic control cooling assembly.

19. The vehicle according to any one of claims 16 to 18, characterized in that The vehicle further includes a vehicle body having a cabin, and the second compressor is disposed outside the cabin.

20. A thermal management method, characterized in that: Applied to the thermal management system according to claim 1, the thermal management method comprises: Controlling the first compressor, the condenser assembly and the evaporator assembly to be connected in sequence to form a first loop; The condenser assembly, the heat exchange pipeline, the second compressor and the first compressor are controlled to be connected in sequence to form a second loop.

21. The thermal management method according to claim 20, characterized in that: After the step of controlling the condenser assembly, the heat exchange pipeline, the second compressor and the first compressor to be connected in sequence to form a second loop, the thermal management method further includes: Acquiring a first pressure of the refrigerant flowing out through the heat exchange pipeline, and acquiring a second pressure of the refrigerant flowing out through the evaporator assembly; Based on the first pressure and the second pressure, operation of the second compressor is controlled.

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