Thermal management system and vehicle

Abstract

The utility model provides a thermal management system and a vehicle. The thermal management system is applied to the vehicle. The heat management system comprises a heat generation loop and a heat exchange loop, the heat generation loop comprises a compressor and a heat regenerator, the air inlet end of the compressor communicates with the first end of the heat regenerator and is used for receiving low-temperature and low-pressure fluid, and the air outlet end of the compressor communicates with the second end of the heat regenerator and is used for receiving low-temperature and low-pressure fluid. The heat exchanger is used for conveying high-temperature and high-pressure fluid to the heat regenerator; the two ends of the heat exchange loop communicate with the third end of the heat regenerator and the fourth end of the heat regenerator correspondingly, the heat exchange loop comprises an expansion valve and a heat exchange unit, and the third end, the expansion valve, the heat exchange unit and the fourth end communicate in sequence; the heat management system further comprises a bypass pipe, one end of the bypass pipe communicates with the end, close to the fourth end, of the heat exchange unit, and the other end of the bypass pipe communicates with the air inlet end of the compressor.

Description

Technical Field

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

[0002] As vehicles have an increasing demand for heat dissipation performance, the compressor displacement of existing vehicle thermal management systems has reached a bottleneck, making it difficult to improve the system performance of the thermal management system. Utility Model Content

[0003] The present application provides a thermal management system and a vehicle to solve the problem that it is difficult to improve the system performance of the thermal management system in the prior art.

[0004] The present application provides a thermal management system, which is applied to a vehicle; the thermal management system includes a heat generation circuit and a heat exchange circuit, the heat generation circuit includes a compressor and a regenerator, the air inlet end of the compressor is connected to the first end of the regenerator for receiving a low-temperature and low-pressure fluid, the air outlet end of the compressor is connected to the second end of the regenerator for conveying a high-temperature and high-pressure fluid to the regenerator; the two ends of the heat exchange circuit are respectively connected to the third end of the regenerator and the fourth end of the regenerator, the heat exchange circuit includes an expansion valve and a heat exchange unit, the third end, the expansion valve, the heat exchange unit, and the fourth end are connected in sequence; wherein the thermal management system also includes a bypass pipe, one end of the bypass pipe is connected to an end of the heat exchange unit close to the fourth end, and the other end of the bypass pipe is connected to the air inlet end of the compressor.

[0005] In a possible embodiment, the number of the heat exchange circuits is at least two, at least two of the heat exchange circuits are connected in parallel to the third end and the fourth end of the heat regenerator, and the heat exchange unit of at least one of the at least two heat exchange circuits is connected to the intake end of the compressor through the bypass pipe.

[0006] In a possible implementation, the number of the heat exchange circuits is two, one of the two heat exchange circuits is set as a first heat exchange circuit, the other of the two heat exchange circuits is set as a second heat exchange circuit, two ends of the first heat exchange circuit are respectively connected to the third end and the fourth end, and two ends of the second heat exchange circuit are respectively connected to the third end and the fourth end;

[0007] The first heat exchange circuit is used to dissipate heat from the battery of the vehicle, and the second heat exchange circuit is used to dissipate heat from the interior space of the vehicle.

[0008] In a possible implementation, the first heat exchange circuit includes:

[0009] a first expansion valve, one end of which is connected to the third end, and the first expansion valve is used to adjust the high-temperature and high-pressure fluid flowing out of the regenerator to a low-temperature and low-pressure fluid;

[0010] A refrigerator is connected to an end of the first expansion valve away from the third end, and is used to receive the low-temperature and low-pressure fluid and perform heat exchange with the battery of the vehicle.

[0011] In a possible implementation manner, one end of the bypass pipe is connected to an end of the refrigerator close to the fourth end, and the other end of the bypass pipe is connected to an air intake end of the compressor.

[0012] In a possible implementation, the second heat exchange circuit includes:

[0013] a second expansion valve, one end of which is connected to the third end, and the second expansion valve is used to adjust the high-temperature and high-pressure fluid flowing out of the regenerator to a low-temperature and low-pressure fluid;

[0014] The evaporator is connected to an end of the second expansion valve away from the third end, and is used to receive the low-temperature and low-pressure fluid and perform heat exchange with the interior space of the vehicle.

[0015] In a possible embodiment, the heat regenerator includes a first pipeline and a second pipeline, the first pipeline includes the first end and the fourth end connected to each other, the second pipeline includes the second end and the third end connected to each other, and the fluid in the first pipeline can exchange heat with the fluid in the second pipeline.

[0016] In a possible implementation, the flow rate of the fluid in the bypass pipe is a first flow rate, the flow rate of the heat exchange unit flowing to the regenerator is a second flow rate, and the ratio of the second flow rate to the first flow rate ranges from 1.5 to 3.

[0017] In a possible implementation, the heat generation circuit further includes a condenser, the condenser is connected to the gas outlet of the compressor, and the condenser is used to convert the gaseous fluid flowing out of the compressor into a liquid fluid or a gas-liquid two-phase fluid; and / or

[0018] The heat generation circuit further comprises a liquid storage tank, one end of which is connected to an end of the condenser away from the compressor, and the other end of which is connected to the second end; and / or

[0019] The heat generation circuit further includes a muffler, which is located between the compressor and the condenser, and the muffler is connected to the compressor and the condenser respectively.

[0020] The present application also provides a vehicle, comprising a vehicle body and the above-mentioned thermal management system, wherein the thermal management system is installed on the vehicle body and is used for performing heat exchange with the internal environment of the vehicle body.

[0021] In a possible implementation, the vehicle further includes a battery, the battery is mounted on the vehicle body, and the thermal management system is further configured to perform heat exchange with the battery.

[0022] In the thermal management system of the present application, the heat exchange unit in the heat exchange circuit is connected to the air inlet end of the compressor through a bypass pipe, so that two branches can be formed at the end of the heat exchange unit away from the expansion valve. The fluids in the two branches flow to the regenerator and the air inlet end of the compressor respectively, thereby reducing the low-pressure flow resistance of the thermal management system, increasing the flow rate of the fluid, reducing the pressure ratio and energy consumption of the compressor, and improving the system performance of the thermal management system. BRIEF DESCRIPTION OF THE DRAWINGS

[0023] Figure 1 FIG. 1 is a schematic diagram of the structure of a thermal management system of the present application in one embodiment.

[0024] Figure 2 FIG. 1 is a schematic structural diagram of a thermal management system of the present application in another embodiment.

[0025] Figure 3 FIG. 1 is a schematic structural diagram of a thermal management system of the present application in another embodiment.

[0026] Figure 4 Schematic diagram of the structure of a heat regenerator in one embodiment of the thermal management system of the present application.

[0027] Figure 5 It is a schematic structural diagram of a vehicle of the present application in one embodiment.

[0028] Description of main component symbols:

[0029] Vehicle 200

[0030] Thermal Management System 100

[0031] Heat generation circuit 10

[0032] Compressor 11

[0033] Inlet end 111

[0034] Gas outlet 112

[0035] Regenerator 12

[0036] First end 121

[0037] Second end 122

[0038] The third end 123

[0039] Fourth End 124

[0040] First pipeline 1201

[0041] Second pipeline 1202

[0042] Condenser 13

[0043] Liquid storage tank 14

[0044] Silencer 15

[0045] Heat exchange circuit 20

[0046] Expansion valve 21

[0047] Heat exchange unit 22

[0048] The first heat exchange circuit 201

[0049] First Expansion Valve 2011

[0050] Refrigerator 2012

[0051] Second heat exchange circuit 202

[0052] Second expansion valve 2021

[0053] Evaporator 2022

[0054] Bypass pipe 30

[0055] Body 40

[0056] Battery 50

[0057] The following specific implementation methods will further illustrate the present application in conjunction with the above-mentioned drawings. DETAILED DESCRIPTION

[0058] The following description will refer to the accompanying drawings to more fully describe the content of the present application. Shown in the accompanying drawings are exemplary embodiments of the present application. However, the present application can be implemented in many different forms and should not be interpreted as being limited to the exemplary embodiments set forth herein. These exemplary embodiments are provided to make the present application thorough and complete, and to fully convey the scope of the present application to those skilled in the art. Similar reference numerals represent identical or similar components.

[0059] The terms used herein are only used for the purpose of describing specific exemplary embodiments and are not intended to limit the present application. As used herein, unless the context clearly indicates otherwise, the singular forms "a", "an" and "the" are intended to also include the plural forms. In addition, when used herein, "including" and / or "comprising" and / or "having", integers, steps, operations, components and / or components, but do not exclude the existence or addition of one or more other features, regions, integers, steps, operations, components and / or groups thereof.

[0060] Unless otherwise defined, all terms (including technical and scientific terms) used herein have the same meaning as commonly understood by those of ordinary skill in the art to which this application belongs. In addition, unless explicitly defined herein, terms such as those defined in general dictionaries should be interpreted as having a meaning consistent with their meaning in the relevant technology and the content of this application, and will not be interpreted as an idealized or overly formal meaning.

[0061] The specific implementation methods of the present application are further described in detail below with reference to the accompanying drawings.

[0062] like Figure 1 and Figure 2 As shown, and refer to Figure 5 , an embodiment of the present application provides a thermal management system 100, and the thermal management system 100 is applied to a vehicle 200. The vehicle 200 can be a new energy vehicle or a fuel vehicle.

[0063] The thermal management system 100 includes a heat generation circuit 10 and a heat exchange circuit 20. The heat generation circuit 10 is used to provide a high-temperature and high-pressure liquid fluid to the heat exchange circuit 20. The high-temperature and high-pressure liquid fluid is converted into a low-temperature and low-pressure gaseous fluid after passing through the heat exchange circuit 20. The low-temperature and low-pressure gaseous fluid flows back to the compressor 11 and is compressed, thereby forming a heat dissipation circulation system.

[0064] The fluid used by the thermal management system 100 is a refrigerant, and the refrigerant includes but is not limited to R22 refrigerant, R-134a refrigerant, R290 refrigerant, R410A refrigerant, etc.

[0065] Specifically, the heat generation circuit 10 includes a compressor 11 and a regenerator 12. The compressor 11 can compress a low-temperature and low-pressure gaseous fluid into a high-temperature and high-pressure gaseous fluid. The regenerator 12 includes a first end 121, a second end 122, a third end 123, and a fourth end 124.

[0066] The air inlet end 111 of the compressor 11 is connected to the first end 121 of the regenerator 12, and is used to receive the low-temperature and low-pressure fluid flowing out from the first end 121 of the regenerator 12, and the low-temperature and low-pressure fluid is a gaseous fluid. The air outlet end 112 of the compressor 11 is connected to the second end 122 of the regenerator 12, and is used to transport the high-temperature and high-pressure fluid to the regenerator 12, and the high-temperature and high-pressure fluid is a gaseous fluid.

[0067] The two ends of the heat exchange circuit 20 are connected to the third end 123 and the fourth end 124, respectively. The heat exchange circuit 20 includes an expansion valve 21 and a heat exchange unit 22. The third end 123, the expansion valve 21, the heat exchange unit 22, and the fourth end 124 are connected in sequence. The expansion valve 21 is an electronic expansion valve, which is used to adjust the high-temperature and high-pressure liquid fluid flowing out of the third end 123 of the regenerator 12 to a low-temperature and low-pressure gas-liquid two-phase fluid. The low-temperature and low-pressure gas-liquid two-phase fluid flows to the heat exchange unit 22 and exchanges heat with hot air, thereby dissipating heat from the scene or device where the heat exchange unit 22 is used.

[0068] Among them, the thermal management system 100 also includes a bypass pipe 30. One end of the bypass pipe 30 is connected to one end of the heat exchange unit 22 near the fourth end 124, and the other end of the bypass pipe 30 is connected to the air intake end 111 of the compressor 11. The setting of the bypass pipe 30 enables a pipe to be connected in parallel to the low-pressure pipeline flowing from the heat exchange unit 22 to the compressor 11, thereby increasing the diameter of the low-pressure pipeline flowing from the heat exchange unit 22 to the compressor 11 in the current heat exchange circuit 20 in disguised form. According to fluid mechanics, when the diameter of the pipeline increases, the flow resistance of the fluid flowing through the pipeline will decrease accordingly, thereby reducing the flow resistance of the low-pressure pipeline. In addition, compared with directly replacing a low-pressure pipeline with a larger diameter, the method of adding a bypass pipe 30 can save layout space and avoid affecting the layout of the original thermal management system 100.

[0069] In this way, in the thermal management system 100 of the present application, the heat exchange unit 22 in the heat exchange circuit 20 is connected to the air inlet end 111 of the compressor 11 through the bypass pipe 30, so that the end of the heat exchange unit 22 away from the expansion valve 21 can form two branches, and the fluids in the two branches flow to the regenerator 12 and the air inlet end 111 of the compressor 11 respectively, thereby reducing the low-pressure flow resistance of the thermal management system 100, increasing the flow rate of the fluid, and also reducing the pressure ratio and energy consumption of the compressor 11, thereby improving the system performance of the thermal management system 100.

[0070] Please combine again Figure 1 and Figure 2 The number of heat exchange circuits 20 is at least two, and at least two heat exchange circuits 20 are connected in parallel to the third end 123 and the fourth end 124 of the heat regenerator 12, so that each heat exchange circuit 20 and the heat regenerator 12 form a heat dissipation circulation system, and each heat exchange circuit 20 is applied to different scenarios or devices.

[0071] In addition, at least one of the at least two heat exchange circuits 20 may be additionally provided with a bypass pipe 30 , so that the heat exchange unit 22 in the heat exchange circuit 20 is connected to the intake end 111 of the compressor 11 through the bypass pipe 30 .

[0072] It is understandable that the number of heat exchange circuits 20 can be two, one, three, or more than three, and the specific number and the application scenarios and devices of each heat exchange circuit 20 can be adjusted according to actual design requirements.

[0073] It is understandable that the number of the bypass pipe 30 may be one or more. When the number of the bypass pipe 30 is one, the bypass pipe 30 may be disposed at any heat exchange circuit 20. When the number of the bypass pipe 30 exceeds one, the bypass pipe 30 may be disposed at different heat exchange circuits 20 according to actual needs.

[0074] In this way, the thermal management system 100 of the present application, by connecting at least two heat exchange circuits 20 in parallel on the heat regenerator 12, at least two heat exchange circuits 20 can be respectively applied to different scenarios or devices to maximize the use of the high-temperature and high-pressure fluid produced by the heat generation circuit 10, and at least two heat exchange circuits 20 share one heat generation circuit 10, saving the cost and required space of the entire thermal management system 100.

[0075] Please combine again Figure 1 and Figure 2 In one embodiment, the flow rate of the fluid in the bypass pipe 30 is a first flow rate, and the flow rate of the heat exchange unit 22 to the regenerator 12 is a second flow rate, and the second flow rate is always greater than the first flow rate. The ratio of the second flow rate to the first flow rate ranges from 1.5 to 3. Under this ratio range, the energy consumption of the compressor 11 can reach a lower level, and the system performance is also at a higher level.

[0076] Specifically, the ratio of the second flow rate to the first flow rate is 1.5, 1.6, 1.7, 1.8, 1.9, 2.0, 2.1, 2.2, 2.3, 2.4, 2.5, 2.6, 2.7, 2.8, 2.9, 3.0, etc.

[0077] It is understandable that the ratio of the second flow rate to the first flow rate may also be outside the ratio range of 1.5 to 3. In this case, the energy consumption and system performance of the compressor 11 are slightly inferior to those of the thermal management system 100 within the above ratio range.

[0078] Please combine again Figure 1 and Figure 2 , and refer to Figure 5In one embodiment, the number of the heat exchange circuits 20 is two. One of the two heat exchange circuits 20 is set as a first heat exchange circuit 201, and the other of the two heat exchange circuits 20 is set as a second heat exchange circuit 202. The second heat exchange circuit 202 is used to dissipate heat from the interior space of the vehicle 200, and the first heat exchange circuit 201 is used to dissipate heat from the battery 50 of the vehicle 200.

[0079] Furthermore, in this embodiment, the first heat exchange circuit 201 includes a first expansion valve 2011 and a refrigerator 2012. The first expansion valve 2011 is an electronic expansion valve, and its opening can be adjusted remotely. The refrigerator 2012 is a chiller, and is installed at the battery 50 of the vehicle 200.

[0080] One end of the first expansion valve 2011 is connected to the third end 123, and is used to adjust the high-temperature and high-pressure liquid fluid flowing out of the third end 123 of the regenerator 12 to a low-temperature and low-pressure gas-liquid two-phase fluid.

[0081] One end of the refrigerator 2012 is connected to one end of the first expansion valve 2011 away from the third end 123, and is used to receive the low-temperature and low-pressure gas-liquid two-phase fluid flowing out of the first expansion valve 2011. The low-temperature and low-pressure gas-liquid two-phase fluid will exchange heat with the battery 50 of the vehicle 200 when flowing through the refrigerator 2012, thereby dissipating heat from the battery 50. After the low-temperature and low-pressure gas-liquid two-phase fluid exchanges heat with the battery 50, it will become a low-temperature and low-pressure gas fluid or a gas-liquid two-phase fluid.

[0082] It is worth noting that whether the low-temperature and low-pressure fluid flowing out of the refrigerator 2012 is a gaseous fluid or a gas-liquid two-phase fluid depends on the opening degree of the first expansion valve 2011 and the working state of the refrigerator 2012.

[0083] One end of the refrigerator 2012 away from the first expansion valve 2011 is connected to the fourth end 124, and is used to transport the low-temperature and low-pressure gaseous fluid or gas-liquid two-phase fluid after heat exchange to the regenerator 12, and then the low-temperature and low-pressure gaseous fluid is transported to the air inlet end 111 of the compressor 11 by the regenerator 12, and the high-temperature and high-pressure liquid fluid flowing into the regenerator 12 from the second end 122 can exchange heat with the low-temperature and low-pressure gas-liquid two-phase fluid or low-temperature and low-pressure gaseous fluid flowing into it from its fourth end 124, and the liquid part of the low-temperature and low-pressure gas-liquid two-phase fluid flowing into the fourth end 124 will be heated and changed into gas during the heat exchange process, so as to convert the low-temperature and low-pressure gas-liquid two-phase fluid into a low-temperature and low-pressure gaseous fluid.

[0084] Furthermore, one end of the bypass pipe 30 is connected to one end of the refrigerator 2012 near the fourth end 124, and the other end of the bypass pipe 30 is connected to the air intake end 111 of the compressor 11. The bypass pipe 30 is provided so that a pipe is connected in parallel to the low-pressure pipeline flowing from the refrigerator 2012 to the compressor 11, thereby increasing the diameter of the low-pressure pipeline between the refrigerator 2012 and the compressor 11 in disguised form, reducing the low-pressure flow resistance of the thermal management system 100, increasing the flow rate of the fluid, and also reducing the pressure ratio and energy consumption of the compressor 11, thereby improving the system performance of the thermal management system 100. In this way, a part of the fluid flowing out of the refrigerator 2012 can directly flow back to the compressor 11 through the bypass pipe 30, and the remaining part can flow to the regenerator 12 and then flow back to the compressor 11.

[0085] Further, when the bypass pipe 30 is connected to the refrigerator 2012 as the heat exchange unit 22, the flow rate of the fluid in the bypass pipe 30 is the first flow rate, and the flow rate from the refrigerator 2012 to the regenerator 12 is the second flow rate, and the second flow rate is always greater than the first flow rate. The ratio of the second flow rate to the first flow rate is in the range of 1.5 to 3. Under this ratio range, the energy consumption of the compressor 11 can reach a lower level, and the system performance is also at a higher level.

[0086] Specifically, the ratio of the second flow rate to the first flow rate is 1.5, 1.6, 1.7, 1.8, 1.9, 2.0, 2.1, 2.2, 2.3, 2.4, 2.5, 2.6, 2.7, 2.8, 2.9, 3.0, etc.

[0087] It is understandable that the ratio of the second flow rate to the first flow rate may also be outside the ratio range of 1.5 to 3. In this case, the energy consumption and system performance of the compressor 11 are slightly inferior to those of the thermal management system 100 within the above ratio range.

[0088] It is understandable that, for details, see Figure 3 In other embodiments, the bypass pipe 30 may not be provided in the first heat exchange circuit 201, but may be provided in the second heat exchange circuit 202 or other heat exchange circuits 20. Alternatively, the number of the bypass pipes 30 is two, and in addition to the first heat exchange circuit 201, the second heat exchange circuit 202 is also provided with a bypass pipe 30. Alternatively, the number of the bypass pipes 30 is three or more, and in addition to the first heat exchange circuit 201 and the second heat exchange circuit 202, other heat exchange circuits 20 may also be provided with a bypass pipe 30. Therefore, the number and position of the bypass pipes 30 may be adaptively adjusted according to actual design requirements.

[0089] Please combine again Figure 1 and Figure 3 , and refer to Figure 5The second heat exchange circuit 202 includes a second expansion valve 2021 and an evaporator 2022. The second expansion valve 2021 is an electronic expansion valve, and its opening can be remotely adjusted. The evaporator 2022 is installed in the interior space of the vehicle 200, and can heat the interior space of the vehicle 200 after heat exchange with the hot air in the vehicle 200.

[0090] One end of the second expansion valve 2021 is connected to the third end 123, and is used to adjust the high-temperature and high-pressure liquid fluid flowing out of the third end 123 of the regenerator 12 to a low-temperature and low-pressure gas-liquid two-phase fluid. The second expansion valve 2021, the first expansion valve 2011, and the third end 123 can be connected through a three-way pipe, so that the high-temperature and high-pressure liquid fluid flowing out of the third end 123 can flow to the first expansion valve 2011 and the second expansion valve 2021 at the same time.

[0091] It can be understood that the pipelines from the regenerator 12 to the first expansion valve 2011 and the second expansion valve 2021 can be provided with switch valves respectively to adjust the on-off of the two pipelines.

[0092] One end of the evaporator 2022 is connected to one end of the second expansion valve 2021 away from the third end 123, and is used to receive the low-temperature and low-pressure gas-liquid two-phase fluid flowing out of the second expansion valve 2021. The low-temperature and low-pressure gas-liquid two-phase fluid will exchange heat with the hot air in the vehicle 200 when flowing through the evaporator 2022, thereby dissipating heat from the interior space of the vehicle 200. After the heat exchange, the low-temperature and low-pressure gas-liquid two-phase fluid will become a low-temperature and low-pressure gaseous fluid or a gas-liquid two-phase fluid.

[0093] It is worth noting that whether the low-temperature and low-pressure fluid flowing out of the evaporator 2022 is a gaseous fluid or a gas-liquid two-phase fluid depends on the opening degree of the second expansion valve 2021 and the working state of the evaporator 2022 .

[0094] One end of the evaporator 2022 away from the second expansion valve 2021 is connected to the fourth end 124, and is used to transport the low-temperature and low-pressure gaseous fluid or gas-liquid two-phase fluid after heat exchange to the regenerator 12, and then the low-temperature and low-pressure gaseous fluid is transported to the air inlet end 111 of the compressor 11 by the regenerator 12, and the high-temperature and high-pressure liquid fluid flowing into the regenerator 12 from the second end 122 can exchange heat with the low-temperature and low-pressure gas-liquid two-phase fluid or low-temperature and low-pressure gaseous fluid flowing into it from its fourth end 124, and the liquid part of the low-temperature and low-pressure gas-liquid two-phase fluid flowing into the fourth end 124 will be heated and changed into gas during the heat exchange process, so as to convert the low-temperature and low-pressure gas-liquid two-phase fluid into a low-temperature and low-pressure gaseous fluid.

[0095] It is understandable that when adopting some embodiments, the second heat exchange circuit 202 is provided with a bypass pipe 30, one end of the bypass pipe 30 is connected to one end of the evaporator 2022 close to the fourth end 124, and the other end of the bypass pipe 30 is connected to the intake end 111 of the compressor 11, thereby increasing the diameter of the low-pressure pipeline between the evaporator 2022 and the compressor 11 in disguised form.

[0096] It is worth noting that the bypass pipe 30 is provided in the second heat exchange circuit 202 .

[0097] The bypass pipe 30 is connected to the evaporator 2022 as the heat exchange unit 22, the flow rate of the fluid in the bypass pipe 30 is the first flow rate, and the flow rate from the evaporator 2022 to the regenerator 12 is the second flow rate, which is always greater than the first flow rate. The ratio of the second flow rate to the first flow rate ranges from 1.5 to 3. Under this ratio range, the energy consumption of the compressor 11 can also reach a low level, and the system performance is also at a high level.

[0098] Specifically, the ratio of the second flow rate to the first flow rate is 1.5, 1.6, 1.7, 1.8, 1.9, 2.0, 2.1, 2.2, 2.3, 2.4, 2.5, 2.6, 2.7, 2.8, 2.9, 3.0, etc.

[0099] It is understandable that the ratio of the second flow rate to the first flow rate may also be outside the ratio range of 1.5 to 3. In this case, the energy consumption and system performance of the compressor 11 are slightly inferior to those of the thermal management system 100 within the above ratio range.

[0100] Please combine again Figure 4 In one embodiment, the regenerator 12 includes a first pipeline 1201 and a second pipeline 1202 .

[0101] Specifically, the first pipeline 1201 includes a first end 121 and a fourth end 124 that are connected to each other. The second pipeline 1202 includes a second end 122 and a third end 123 that are connected to each other. The first pipeline 1201 and the second pipeline 1202 are arranged alternately, and the first pipeline 1201 and the second pipeline 1202 are not connected to each other.

[0102] The fluid in the first pipeline 1201 and the fluid in the second pipeline 1202 can perform heat exchange, so that the high-temperature and high-pressure liquid fluid flowing in the second pipeline 1202 can perform heat exchange with part of the low-temperature and low-pressure gas-liquid two-phase fluid flowing in the first pipeline 1201, and convert this part of the low-temperature and low-pressure gas-liquid two-phase fluid into a low-temperature and low-pressure gaseous fluid.

[0103] Please combine again Figure 1 and Figure 2 In one embodiment, the heat generation circuit 10 further includes a condenser 13 and a liquid storage tank 14 .

[0104] The condenser 13 is a water-cooled condenser, or other types of condensing equipment. One end of the condenser 13 is connected to the gas outlet 112 of the compressor 11, and the condenser 13 is used to convert the high-temperature and high-pressure gaseous fluid flowing out of the gas outlet 112 of the compressor 11 into a high-temperature and high-pressure liquid fluid or a gas-liquid two-phase fluid.

[0105] One end of the liquid storage tank 14 is connected to one end of the condenser 13 away from the compressor 11, and the other end of the liquid storage tank 14 is connected to the second end 122. The liquid storage tank 14 can temporarily store the high-temperature and high-pressure liquid fluid flowing out of the condenser 13, and then transport the stored high-temperature and high-pressure liquid fluid to the second end 122 of the regenerator 12. It is worth noting that the gaseous part of the high-temperature and high-pressure gas-liquid two-phase fluid flowing out of the condenser 13 will contact the inner wall of the liquid storage tank 14 and be stored in the liquid storage tank 14 after being cooled and liquefied.

[0106] In particular, a flow regulating valve may be provided on the pipeline between the liquid storage tank 14 and the second end 122 of the regenerator 12 , and the flow regulating valve is used to adjust the flow of the high-temperature and high-pressure liquid fluid entering the regenerator 12 .

[0107] Furthermore, the heat generation circuit 10 further includes a muffler 15. The muffler 15 is located between the compressor 11 and the condenser 13, and the muffler 15 is respectively connected to the gas outlet 112 of the compressor 11 and the end of the condenser 13 away from the liquid storage tank 14. The muffler 15 is a muffler that can muffle and reduce the noise of the high-temperature and high-pressure gaseous fluid flowing out of the gas outlet 112 of the compressor 11.

[0108] like Figure 5 As shown, the embodiment of the present application further provides a vehicle 200. The vehicle 200 includes a vehicle body 40 and the above-mentioned thermal management system 100. The thermal management system 100 is installed on the vehicle body 40 and is used to perform heat exchange with the internal environment of the vehicle body 40. The vehicle 200 can be a fuel vehicle or a new energy vehicle.

[0109] Furthermore, the vehicle 200 is a new energy vehicle, and the vehicle 200 also includes a battery 50. The battery 50 is installed on the vehicle body 40, and the thermal management system 100 is also used to perform heat exchange with the battery 50, that is, the thermal management system 100 acts on the vehicle interior space and the battery 50 at the same time to dissipate heat for both.

[0110] In the above, the specific embodiments of the present application are described with reference to the accompanying drawings. However, those skilled in the art will appreciate that various changes and substitutions may be made to the specific embodiments of the present application without departing from the scope of the present application. These changes and substitutions are all within the scope defined by the present application.

Claims

1. A thermal management system, applied to a vehicle; characterized in that: The thermal management system comprises: A heat generation circuit, comprising a compressor and a regenerator, wherein an air inlet end of the compressor is connected to a first end of the regenerator for receiving a low-temperature and low-pressure fluid, and an air outlet end of the compressor is connected to a second end of the regenerator for delivering a high-temperature and high-pressure fluid to the regenerator; a heat exchange circuit, the two ends of which are respectively connected to the third end of the regenerator and the fourth end of the regenerator, the heat exchange circuit comprising an expansion valve and a heat exchange unit, the third end, the expansion valve, the heat exchange unit, and the fourth end are connected in sequence; Wherein, the thermal management system further includes a bypass pipe, one end of which is connected to an end of the heat exchange unit close to the fourth end, and the other end of the bypass pipe is connected to an intake end of the compressor.

2. The thermal management system according to claim 1, characterized in that: The number of the heat exchange circuits is at least two, at least two of the heat exchange circuits are connected in parallel to the third end and the fourth end of the heat regenerator, and the heat exchange unit of at least one of the at least two heat exchange circuits is connected to the air intake end of the compressor through the bypass pipe.

3. The thermal management system according to claim 2, characterized in that: The number of the heat exchange circuits is two, one of the two heat exchange circuits is set as a first heat exchange circuit, and the other of the two heat exchange circuits is set as a second heat exchange circuit, two ends of the first heat exchange circuit are respectively connected to the third end and the fourth end, and two ends of the second heat exchange circuit are respectively connected to the third end and the fourth end; The first heat exchange circuit is used to dissipate heat from the battery of the vehicle, and the second heat exchange circuit is used to dissipate heat from the interior space of the vehicle.

4. The thermal management system according to claim 3, characterized in that: The first heat exchange circuit comprises: a first expansion valve, one end of which is connected to the third end, and the first expansion valve is used to adjust the high-temperature and high-pressure fluid flowing out of the regenerator to a low-temperature and low-pressure fluid; A refrigerator is connected to an end of the first expansion valve away from the third end, and is used to receive the low-temperature and low-pressure fluid and perform heat exchange with the battery of the vehicle.

5. The thermal management system according to claim 4, characterized in that: One end of the bypass pipe is connected to one end of the refrigerator close to the fourth end, and the other end of the bypass pipe is connected to the air inlet end of the compressor.

6. The thermal management system according to claim 3, characterized in that: The second heat exchange circuit comprises: a second expansion valve, one end of which is connected to the third end, and the second expansion valve is used to adjust the high-temperature and high-pressure fluid flowing out of the regenerator to a low-temperature and low-pressure fluid; The evaporator is connected to an end of the second expansion valve away from the third end, and is used to receive the low-temperature and low-pressure fluid and perform heat exchange with the interior space of the vehicle.

7. The thermal management system according to claim 6, characterized in that: The regenerator includes a first pipeline and a second pipeline, the first pipeline includes the first end and the fourth end connected to each other, the second pipeline includes the second end and the third end connected to each other, and the fluid in the first pipeline can exchange heat with the fluid in the second pipeline.

8. The thermal management system according to claim 1, wherein: The flow rate of the fluid in the bypass pipe is a first flow rate, the flow rate of the heat exchange unit flowing to the regenerator is a second flow rate, and the ratio of the second flow rate to the first flow rate ranges from 1.5 to 3.

9. The thermal management system according to claim 1, characterized in that: The heat generation circuit further comprises a condenser, the condenser being connected to the gas outlet of the compressor, and the condenser being used for converting the gaseous fluid flowing out of the compressor into a liquid fluid or a gas-liquid two-phase fluid; and / or The heat generation circuit further comprises a liquid storage tank, one end of which is connected to an end of the condenser away from the compressor, and the other end of which is connected to the second end; and / or The heat generation circuit further includes a muffler, which is located between the compressor and the condenser, and the muffler is connected to the compressor and the condenser respectively.

10. A vehicle, characterized in that: The invention comprises a vehicle body and a thermal management system as claimed in any one of claims 1 to 9, wherein the thermal management system is installed on the vehicle body and is used for performing heat exchange with the internal environment of the vehicle body.

11. The vehicle according to claim 10, characterized in that The vehicle further includes a battery mounted on the vehicle body, and the thermal management system is further configured to perform heat exchange with the battery.

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