Thermal Management System

Abstract

This invention discloses a thermal management system, including a compressor and a first heat exchanger. The thermal management system further includes a first thermal management unit, a second thermal management unit, and a first dual-channel heat exchanger. The first dual-channel heat exchanger includes a first channel and a second channel, and the refrigerant in the first channel and the refrigerant in the second channel can exchange heat. The second thermal management unit includes at least one throttling valve and a second heat exchanger. The at least one throttling valve includes a first regulating valve, which can regulate the pressure of the refrigerant in the second heat exchanger. Along the flow direction of the working medium, the first regulating valve is disposed between the first heat exchanger and the second heat exchanger, the first channel is disposed between the first heat exchanger and the second heat exchanger, and the second channel is disposed between the second heat exchanger and the compressor. This relatively improves the temperature uniformity of the second heat exchanger.

Description

Technical Field

[0001] This invention relates to the field of thermal management technology, and more specifically to a thermal management system. Background Technology

[0002] Vehicle thermal management systems include heat exchangers that can regulate battery temperature. The temperature uniformity of the heat exchangers has a significant impact on battery performance, thus placing new demands on thermal management systems to ensure that the battery operates in a relatively uniform temperature environment. Summary of the Invention

[0003] The purpose of this invention is to provide a thermal management system that helps improve the temperature uniformity of heat exchangers.

[0004] This invention provides a thermal management system, including a compressor and a first heat exchanger. A first port of the compressor is connected to a second port of the first heat exchanger. The thermal management system further includes a first thermal management unit, a second thermal management unit, and a first dual-channel heat exchanger. Along the flow direction of the working medium in the thermal management system, at least a portion of the first thermal management unit, the second thermal management unit, and the first dual-channel heat exchanger are located between the second port of the compressor and the first port of the first heat exchanger. The first thermal management unit is capable of exchanging heat with a first heat source, and the second thermal management unit is capable of exchanging heat with a second heat source. The first dual-channel heat exchanger includes a first channel and a second channel, and the refrigerant in the first channel and the refrigerant in the second channel are capable of exchanging heat. The second thermal management unit includes at least one throttling valve and a second heat exchanger. The at least one throttling valve includes a first regulating valve capable of regulating the pressure of the refrigerant in the second heat exchanger.

[0005] In the thermal management system, along the flow direction of the working medium, the first regulating valve is disposed between the first heat exchanger and the second heat exchanger, the first flow channel is disposed between the first heat exchanger and the second heat exchanger, and the second flow channel is disposed between the second heat exchanger and the compressor.

[0006] According to an embodiment of the present invention, the thermal management system includes a first thermal management unit, a refrigerant unit of a second thermal management unit, and a first dual-channel heat exchanger. By providing the first and second thermal management units, the thermal management system can exchange heat with different heat sources, such as cooling different heat sources, thereby improving the versatility of the thermal management system. The refrigerant unit of the second thermal management unit includes a first regulating valve and a second heat exchanger. The first regulating valve can regulate the flow rate and pressure of the refrigerant entering the second heat exchanger, enabling the second heat exchanger to match the heat load of the heat source. In the extension direction of the refrigerant transmission path, by extending the first dual-channel heat exchanger... A first flow channel is positioned between the first and second heat exchangers, while a second flow channel is positioned between the second heat exchanger and the compressor. This allows the high-temperature, high-pressure refrigerant flowing from the first heat exchanger to enter the second heat exchanger through the first flow channel when the second heat exchanger is cooling. Conversely, the low-temperature, low-pressure refrigerant flowing from the second heat exchanger enters the compressor through the second flow channel. The relatively cold and relatively hot refrigerants exchange heat in the first dual-flow-channel heat exchanger, which reduces the superheat of the refrigerant flowing from the second heat exchanger. This reduces the temperature difference between the outlet and inlet of the second heat exchanger, thereby improving the temperature uniformity of the second heat exchanger. Simultaneously, it ensures the superheat of the refrigerant entering the compressor, thus extending the compressor's service life. Attached Figure Description

[0007] Figure 1 This is a schematic connection block diagram of the thermal management system provided in the first embodiment of the present invention;

[0008] Figure 2 yes Figure 1 The diagram showing the pressure and enthalpy of the thermal management system provided in the document;

[0009] Figure 3 This is a schematic connection block diagram of the thermal management system provided in the second embodiment of the present invention;

[0010] Figure 4 yes Figure 3 The diagram showing the pressure and enthalpy of the thermal management system provided in the document;

[0011] Figure 5 This is a schematic connection block diagram of the thermal management system provided in the third embodiment of the present invention;

[0012] Figure 6 yes Figure 5 The diagram showing the pressure and enthalpy of the thermal management system provided in the document;

[0013] Figure 7 This is a schematic connection block diagram of the thermal management system provided in the fourth embodiment of the present invention;

[0014] Figure 8 yes Figure 7The diagram showing the pressure and enthalpy of the thermal management system provided in the document;

[0015] Figure 9 This is a schematic connection block diagram of the thermal management system provided in the fifth embodiment of the present invention;

[0016] Figure 10 yes Figure 9 The diagram showing the pressure and enthalpy of the thermal management system provided in the document;

[0017] Figure 11 This is a schematic connection block diagram of the thermal management system provided in the sixth embodiment of the present invention;

[0018] Figure 12 yes Figure 11 The diagram showing the pressure and enthalpy of the thermal management system provided in the document;

[0019] Figure 13 This is a schematic connection block diagram of the thermal management system provided in the seventh embodiment of the present invention;

[0020] Figure 14 yes Figure 13 The diagram showing the pressure and enthalpy of the thermal management system provided in the document;

[0021] Figure 15 This is a schematic connection block diagram of the thermal management system provided in the eighth embodiment of the present invention;

[0022] Figure 16 yes Figure 15 The diagram showing the pressure and enthalpy of the thermal management system provided in the document;

[0023] Figure 17 This is a schematic connection block diagram of the thermal management system provided in the ninth embodiment of the present invention;

[0024] Figure 18 This is a schematic diagram of the first valve device provided in one embodiment of the present invention;

[0025] Figure 19 yes Figure 17 The diagram shows the refrigerant flow direction of the thermal management system when the second heat exchanger is heating.

[0026] Figure 20 yes Figure 17 The diagram shows the refrigerant flow direction of the thermal management system during refrigeration in the second heat exchanger.

[0027] Figure 21 This is a schematic connection block diagram of the thermal management system provided in the tenth embodiment of the present invention;

[0028] Figure 22 This is a schematic connection block diagram of the thermal management system provided in the eleventh embodiment of the present invention;

[0029] Figure 23 yes Figure 22 A schematic diagram of the refrigerant and coolant flow direction in the heat recovery mode of the medium-temperature management system;

[0030] Figure 24 yes Figure 22 A schematic diagram of the refrigerant and coolant flow direction when the second heat exchanger is refrigerating and the compressor is running in the central heat management system;

[0031] Figure 25 yes Figure 22 The diagram shows the structure of the second heat exchanger.

[0032] Figure 26 yes Figure 22 A schematic diagram of the coolant flow direction in the central heat management system when the second heat exchanger is refrigerated and the compressor is turned off. Detailed Implementation

[0033] The features and exemplary embodiments of various aspects of the present invention will now be described in detail. In order to make the objectives, technical solutions and advantages of the present invention clearer, the present invention will be further described in detail below with reference to the accompanying drawings and specific embodiments.

[0034] The thermal management system of this invention can be implemented in various ways. At least one implementation can be applied to a vehicle thermal management system, and at least one implementation can be applied to other thermal management systems such as residential or commercial thermal management systems. The thermal management principle of this thermal management system is similar when applied to vehicle, residential, or commercial thermal management systems. This article uses a vehicle thermal management system as an example for illustration with reference to the accompanying drawings. Specifically, the thermal management system of this invention can be applied to the cooling of electrical equipment in hybrid vehicles powered by both an engine and an electric motor, and can also be applied to the cooling of electrical equipment in vehicles powered only by an electric motor. In this article, both hybrid vehicles and pure electric vehicles are referred to as electric vehicles.

[0035] Please refer to the following: Figure 1 , Figure 3 and Figure 5 , Figure 1 This is a schematic connection block diagram of the thermal management system provided in the first embodiment of the present invention. Figure 3 This is a schematic connection block diagram of the thermal management system provided in the second embodiment of the present invention. Figure 5This is a schematic connection block diagram of the thermal management system provided in the third embodiment of the present invention. The present invention provides a thermal management system 1, including an interior temperature and a battery temperature. The interior temperature management system is capable of thermally managing the interior temperature of the vehicle, and the battery temperature management system is capable of thermally managing the battery temperature of the electric vehicle. This thermal management system 1 can be installed on an electric vehicle. Specifically, the working medium for both the interior temperature and battery temperature management systems can be a refrigerant, enabling cooling and / or heating of the interior temperature and / or the battery temperature.

[0036] The thermal management system 1 provided in this embodiment of the invention may include a refrigerant system and a coolant system, or it may include only a refrigerant system. The working medium in the refrigerant system is refrigerant, and the working medium in the coolant system is coolant.

[0037] The thermal management system 1 includes a compressor 100 and a first heat exchanger 700. The first port 101 of the compressor 100 is connected to the second port 702 of the first heat exchanger 700. When the thermal management system 1 is in cooling mode, the working medium can be transferred from the first port 101 of the compressor 100 to the second port 702 of the first heat exchanger 700. After passing through the first heat exchanger 700, it exchanges heat with the outside atmosphere. As the working medium flows through the first port 701 of the first heat exchanger 700 in the thermal management system 1, it can exchange heat with different heat sources, such as cooling and / or heating the vehicle interior, and cooling and / or heating the battery in an electric vehicle. The working medium after heat exchange returns to the second port 102 of the compressor 100, and the thermal management system 1 can operate in a cycle.

[0038] The thermal management system 1 also includes a first thermal management unit 300, a second thermal management unit 5000, and a first dual-flow heat exchanger 600. The first thermal management unit 300 is capable of exchanging heat with a first heat source, and the second thermal management unit 5000 is capable of exchanging heat with a second heat source. At least a portion of the first thermal management unit 300, the second thermal management unit 5000, and the first dual-flow heat exchanger 600 are located between the first port 701 of the first heat exchanger 700 and the second port 102 of the compressor, such that after the working medium flows out from the first port 701 of the first heat exchanger 700, it passes through the first thermal management unit 300, the first portion of the second thermal management unit 5000, and the first dual-flow heat exchanger 600, and then returns to the second port 102 of the compressor 100. When the thermal management system 1 is in cooling mode, the first thermal management unit 300, the first portion of the second thermal management unit 5000, and the first dual-flow heat exchanger 600 are located downstream of the first heat exchanger 700. It is understood that the terms "upstream" and "downstream" in this article are defined according to the flow direction of the working medium. For example, "the first thermal management unit 300 is downstream of the first heat exchanger 700" means that in the cooling mode, the working medium flows through the first heat exchanger 700 first and then through the first thermal management unit 300; "the first heat exchanger 700 is upstream of the first thermal management unit 300" means that in the cooling mode, the working medium flows through the first heat exchanger 700 first and then through the first thermal management unit 300.

[0039] The first thermal management unit 300 and the second thermal management unit 5000 can exchange heat with different heat sources respectively. The first dual-channel heat exchanger 600 includes a first channel 601 and a second channel 602. The working medium in the first channel 601 and the working medium in the second channel 602 can exchange heat. The second thermal management unit 5000 includes at least one throttle valve and a second heat exchanger 500. The at least one throttle valve includes a first regulating valve 440. The first regulating valve 440 is used to regulate the pressure and flow rate of the refrigerant in the refrigerant channel of the second heat exchanger 500. The first regulating valve 440 is located between the first heat exchanger 700 and the second heat exchanger 500 along the flow direction of the working medium in the thermal management system 1. The first channel 601 is located between the first heat exchanger 700 and the second heat exchanger 500. The second channel 602 is located between the second heat exchanger 500 and the second port 102 of the compressor 100. The first thermal management unit 300 can be used for vehicle interior cooling or heating, and the second thermal management unit 5000 can be used for battery cooling or heating in electric vehicles.

[0040] According to the thermal management system 1 provided in the embodiment of the present invention, the first regulating valve 440 can regulate the flow rate of the working medium entering the second heat exchanger 500, so that the second heat exchanger 500 can be matched with the heat load of the heat source (battery); in the flow direction of the working medium, by placing the first flow channel 601 of the first dual-channel heat exchanger 600 between the first heat exchanger 700 and the second heat exchanger 500, and placing the second flow channel 602 between the second heat exchanger 500 and the second port 102 of the compressor 100, when the second heat exchanger 500 is cooling, the flow rate from the first heat exchanger 700... The high-temperature, high-pressure working medium flows out and enters the second heat exchanger 500 through the first flow channel 601. The low-temperature, low-pressure refrigerant flowing out of the second heat exchanger 500 flows out through the second flow channel 602. The relatively cold refrigerant and the relatively hot refrigerant exchange heat in the first dual-flow channel heat exchanger 600, which can reduce the superheat of the refrigerant flowing out of the second heat exchanger 500, thereby reducing the temperature difference between the outlet and inlet of the second heat exchanger 500 and improving the temperature uniformity of the second heat exchanger 500. At the same time, it can ensure that the superheat of the refrigerant entering the compressor 100 meets the requirements and improve the service life of the compressor 100.

[0041] In some embodiments, the compressor 100 may be located on the motor or engine of an electric vehicle, such that the motor or engine can provide a power source for the compressor 100, thereby enabling the compressor 100 to operate. The compressor enables the refrigerant to circulate within the thermal management system 1.

[0042] The first heat exchanger 700 cools the superheated refrigerant gas compressed in the compressor 100 by releasing heat to the outside atmosphere, thereby condensing (liquefying). Optionally, the first heat exchanger 700 can be a condenser, and includes a channel for refrigerant flow and heat sinks, which increase the heat exchange area between the refrigerant flowing in the channel and the air surrounding the first heat exchanger 700.

[0043] In specific implementation, the first heat exchanger 700 is used for heat exchange between the cooling air and the refrigerant flowing within the first heat exchanger 700. The cooling air can also be supplied to the first heat exchanger 700 by natural cooling air generated during the operation of the electric vehicle. Alternatively, the thermal management system 1 may include a fan to supply cooling air to the first heat exchanger 700, enabling heat exchange between the first heat exchanger 700 and the atmosphere. After passing through the first heat exchanger 700, the refrigerant liquefies.

[0044] Optionally, the first thermal management unit 300 can be used to thermally manage the temperature inside the vehicle. The first thermal management unit 300 may include a third regulating valve 420 and a third heat exchanger 310. The third regulating valve 420 is used to regulate the flow rate and pressure of the refrigerant entering the third heat exchanger 310. The third heat exchanger 310 performs heat exchange between the refrigerant and the air inside the vehicle to achieve cooling of the vehicle interior by the refrigerant.

[0045] The second thermal management unit 5000 can be used for battery thermal management in electric vehicles. The first regulating valve 440 can be an expansion valve, which expands the high-pressure liquid refrigerant flowing in the pipeline, changing it into a low-temperature, low-pressure mist refrigerant. At this time, the refrigerant is in the gas-liquid two-phase region. The first regulating valve 440 depressurizes the refrigerant liquid condensed by the first heat exchanger 700, making it a gas-liquid mixed state of wet vapor. The gas-liquid mixed state of wet vapor enters the second heat exchanger 500. The refrigerant flow channel of the second heat exchanger 500 can be a direct cooling plate, which is in direct or indirect contact with the battery to cool the battery.

[0046] To enable independent thermal management for the first thermal management unit 300 and the second thermal management unit 5000, please refer to further details. Figure 1 , Figure 3 and Figure 5 In some embodiments, the thermal management system 1 includes a first main line 10, a first branch line 20, a second branch line 30, and a second main line 40. The first port 701 of the first heat exchanger 700 is connected to the first branch line 20 and the second branch line 30 via the first main line 10. The first branch line 20 and the second branch line 30 are connected to the second port 102 of the compressor 100 via the second main line 40. The first branch line 20 and the second branch line 30 can be arranged in parallel. The first thermal management unit 300 is disposed on the first branch line 20, and the first regulating valve 440 and the second heat exchanger 500 of the second thermal management unit 5000 are disposed on the second branch line 30. Through the above arrangement, the refrigerant of the thermal management system 1 can be transferred to the first branch line 20 and the second branch line 30 via the first main line 10, so that the first thermal management unit 300 disposed on the first branch line 20 and the second thermal management unit 5000 disposed on the second branch line 30 can independently adjust the flow of the working medium to achieve independent thermal management of their respective branches.

[0047] Based on this, such as Figure 1 and Figure 3 As shown, the first dual-channel heat exchanger 600 can be located in the second branch 30, or as... Figure 5As shown, the first flow channel 601 of the first dual-flow channel heat exchanger 600 is located in the first main circuit 10, and the second flow channel 602 of the first dual-flow channel heat exchanger 600 is located in the second main circuit 40. This arrangement allows the refrigerant in the first flow channel 601 and the second flow channel 602 of the first dual-flow channel heat exchanger 600 to exchange heat. Figure 1 and Figure 3 This implementation method helps to reduce the superheat of the refrigerant flowing out of the second heat exchanger 500, improving the situation where the refrigerant at the outlet of the second heat exchanger 500 is almost in a gaseous state and cannot effectively cool the battery heat source located at the outlet. This reduces the temperature difference between the outlet and inlet of the second heat exchanger 500, relatively improving the temperature uniformity of the second heat exchanger 500 and the temperature uniformity of the battery. At the same time, after the refrigerant flows through the second flow channel 602, it can increase the superheat of the refrigerant entering the compressor 100, thereby increasing the service life of the compressor 100. Figure 5 The implementation method helps to reduce the superheat of the refrigerant flowing out of the second heat exchanger 500 and the refrigerant flowing out of the third heat exchanger 310, thereby relatively improving the temperature uniformity of the second heat exchanger 500 and the temperature uniformity inside the vehicle. It also increases the superheat of the refrigerant entering the compressor 100 and improves the service life of the compressor 100.

[0048] When the first dual-channel heat exchanger 600 is disposed in the second branch 30, optionally, on the second branch 30, i.e. along the extending direction of the second branch 30, the first channel 601 is disposed between the first main line 10 and the first regulating valve 440, or between the first regulating valve 440 and the refrigerant channel of the second heat exchanger 500, and the second channel 602 is disposed between the refrigerant channel of the second heat exchanger 500 and the second main line 40. The structure of the thermal management system 1 of the present invention according to an embodiment of the present invention will be described in detail below with reference to the accompanying drawings.

[0049] Please refer to the following: Figure 1 and Figure 2 , Figure 2 yes Figure 1 The diagram shows the pressure and enthalpy of the thermal management system provided. In some embodiments, the first dual-channel heat exchanger 600 may be disposed on the second branch 30. On the second branch 30, i.e. along the extension direction of the second branch 30, the first channel 601 is located between the first main line 10 and the first regulating valve 440, the first regulating valve 440 is located between the first channel 601 and the second heat exchanger 500, and the second channel 602 is located between the second heat exchanger 500 and the second port 102 of the compressor 100.

[0050] Based on the structure of the thermal management system 1 described above, from Figure 2As shown in the pressure-enthalpy diagram, after heat exchange between the refrigerant in the first flow channel 601 and the refrigerant in the second flow channel 602, the enthalpy of the refrigerant flowing out of the outlet of the first flow channel 601 is lower than that at the inlet of the first flow channel 601. This allows the first flow channel 601 to increase the subcooling of the refrigerant before it enters the first regulating valve 440, thereby reducing the dryness of the refrigerant at the inlet of the second heat exchanger 500, improving the heat transfer performance of the second heat exchanger 500, and making it more energy-efficient. Simultaneously, it allows more liquid refrigerant to enter the second heat exchanger 500, improving the gas-liquid two-phase refrigerant distribution inside the second heat exchanger 500. This ensures that during the cooling process, the refrigerant flowing at the outlet of the second heat exchanger 500 is in the gas-liquid two-phase region, improving the temperature uniformity of the second heat exchanger 500, and thus improving the temperature uniformity of the battery. Figure 2 It can also be seen that after the refrigerant in the first flow channel 601 exchanges heat with the refrigerant in the second flow channel 602, the enthalpy of the refrigerant flowing out of the outlet of the second flow channel 602 is higher than that of the refrigerant at the inlet of the second flow channel 602. This allows the second flow channel 602 to increase the superheat of the refrigerant before it enters the compressor 100, thereby ensuring that the refrigerant before it enters the compressor 100 is in a gaseous state. This prevents some liquid refrigerant from entering the compressor 100 and affecting it if the superheat of the refrigerant before it enters the compressor 100 is insufficient. It should be noted that in this article, "inlet" and "outlet" refer to the ports where refrigerant flows into the valve structure or heat exchanger structure when the thermal management system 1 is in cooling mode. The port is the inlet, and the port is the outlet. The valve structure includes a first regulating valve 440, a third regulating valve 420, and a second regulating valve 430. The heat exchanger structure includes a first heat exchanger 700, a second heat exchanger 500, a third heat exchanger 500, and a first dual-flow heat exchanger 600. The ports include the ports of the valve structure or heat exchanger structure itself or the ports connected to the valve structure or heat exchanger structure. For example, in cooling mode, the inlet of the first heat exchanger 700 is the first port 701, and the outlet of the first heat exchanger 700 is the second port 702.

[0051] Please refer to the following: Figure 3 and Figure 4 , Figure 4 yes Figure 3 The diagram shows the pressure-enthalpy of the thermal management system provided. In some embodiments, a first dual-channel heat exchanger 600 is disposed in the second branch 30. Along the extension direction of the second branch 30, the first channel 601 is disposed between the first regulating valve 440 and the refrigerant channel of the second heat exchanger 500, and the second channel 602 is disposed between the refrigerant channel of the second heat exchanger 500 and the second main branch 40. Based on the structure of the thermal management system 1 described above, from... Figure 4As can be seen, after the refrigerant in the first flow channel 601 and the refrigerant in the second flow channel 602 exchange heat, the enthalpy of the refrigerant flowing out of the outlet of the first flow channel 601 is lower than that of the refrigerant at the inlet of the first flow channel 601, and the enthalpy of the refrigerant flowing out of the outlet of the second flow channel 602 is higher than that of the refrigerant at the inlet of the second flow channel 602. This can reduce the dryness of the refrigerant at the inlet of the second heat exchanger 500, and further ensure that the refrigerant flowing through the outlet of the second heat exchanger 500 is in the gas-liquid two-phase region during the refrigeration process, which can improve the temperature uniformity of the second heat exchanger 500, thereby improving the temperature uniformity of the battery. At the same time, the second flow channel 602 can increase the superheat of the refrigerant before entering the compressor 100, thereby increasing the service life of the compressor 100.

[0052] Please refer to the following: Figure 5 and Figure 6 , Figure 6 yes Figure 5 The diagram shows the pressure-enthalpy of the thermal management system provided. In some embodiments, the first flow channel 601 of the first dual-flow heat exchanger 600 is disposed in the first main line 10, and the second flow channel 602 of the first dual-flow heat exchanger 600 is disposed in the second main line 40. Based on the structure of the thermal management system 1 described above, from... Figure 6 As can be seen, after heat exchange between the refrigerant in the first flow channel 601 and the refrigerant in the second flow channel 602, the enthalpy of the refrigerant flowing out of the first flow channel 601 is lower than that at the inlet of the first flow channel 601, while the enthalpy of the refrigerant flowing out of the second flow channel 602 is higher than that at the inlet of the second flow channel 602. The first flow channel 601 can increase the subcooling of the refrigerant before it enters the first regulating valve 440, and can reduce the dryness of the refrigerant at the inlet of the second heat exchanger 500, further... This ensures that during the refrigeration process, the refrigerant flowing through the outlet of the second heat exchanger 500 is in the gas-liquid two-phase region, which improves the temperature uniformity of the second heat exchanger 500 and thus enhances the temperature uniformity of the battery. At the same time, the second flow channel 602 can increase the superheat of the refrigerant before it enters the compressor 100, thereby extending the compressor's lifespan. Furthermore, the first flow channel 601 can also increase the subcooling of the refrigerant before it enters the third regulating valve 420, improving the heat transfer performance of the third heat exchanger 310 and enhancing energy-saving effects.

[0053] Please refer to the following: Figure 7 , Figure 9 , Figure 11 , Figure 13 and Figure 15 , Figure 7 This is a schematic connection block diagram of the management system provided in the fourth embodiment of the present invention. Figure 9 This is a schematic connection block diagram of the thermal management system 1 provided in the fifth embodiment of the present invention. Figure 11This is a schematic connection block diagram of the thermal management system provided in the sixth embodiment of the present invention. Figure 13 This is a schematic connection block diagram of the thermal management system provided in the seventh embodiment of the present invention. Figure 15 This is a schematic connection block diagram of the thermal management system provided in the eighth embodiment of the present invention.

[0054] To further regulate the refrigerant pressure in the second heat exchanger 500, in some embodiments, at least one throttle valve in the second thermal management unit 5000 further includes a second regulating valve 430. Along the flow direction of the working medium, the second regulating valve 430 is disposed between the refrigerant flow channel of the second heat exchanger 500 and the second port 102 of the compressor 100. On the second branch 30, i.e., along the extension direction of the second branch 30, the first flow channel 601 is located between the first main line 10 and the first regulating valve 440. In cooling mode, the first flow channel 601 is located upstream of the first regulating valve 440, or the first regulating valve 440 is located between the first flow channel 601 and the refrigerant flow channel of the second heat exchanger 500. The second flow channel 602 is located between the second heat exchanger 500 and the second regulating valve 430. In cooling mode, the second flow channel 602 is located upstream of the second regulating valve 430, or the second flow channel 602 is disposed between the second regulating valve 430 and the second main line 40. The structure of the thermal management system 1 of the present invention according to an embodiment of the present invention will be described in detail below with reference to the accompanying drawings.

[0055] Please refer to the following: Figure 7 and Figure 8 , Figure 8 yes Figure 7 The diagram shows the pressure-enthalpy of the thermal management system provided. In some embodiments, a first flow channel 601 is disposed between the first main line 10 and the first regulating valve 440, and a second flow channel 602 is disposed between the refrigerant flow channel of the second heat exchanger 500 and the second regulating valve 430. Figure 8 It can be seen that the enthalpy of the refrigerant flowing out of the outlet of the first flow channel 601 is lower than that of the refrigerant at the inlet of the first flow channel 601, while the enthalpy of the refrigerant flowing out of the outlet of the second flow channel 602 is higher than that of the refrigerant at the inlet of the second flow channel 602. The thermal management system 1 provided in this embodiment has the same... Figures 1 to 6 The beneficial effects of the thermal management system 1 shown in the figure will not be repeated here.

[0056] Please refer to the following: Figure 9 and Figure 10 , Figure 10 yes Figure 9The diagram illustrates the pressure-enthalpy relationship of the thermal management system provided. In some embodiments, the first flow channel 601 is located on the second branch 30, between the first main line 10 and the first regulating valve 440. The second flow channel 602 is located between the second regulating valve 430 and the second main line 40. In cooling mode, the first flow channel 601 is upstream of the first regulating valve 440, and the second flow channel 602 is downstream of the second regulating valve 430. Figure 10 It can be seen that the enthalpy of the refrigerant flowing out of the outlet of the first flow channel 601 is lower than that of the refrigerant at the inlet of the first flow channel 601, while the enthalpy of the refrigerant flowing out of the outlet of the second flow channel 602 is higher than that of the refrigerant at the inlet of the second flow channel 602. The thermal management system 1 provided in this embodiment has the same... Figures 1 to 6 The beneficial effects of the thermal management system 1 shown in the figure will not be repeated here.

[0057] Please refer to the following: Figure 11 and Figure 12 , Figure 12 yes Figure 11 The diagram shows the pressure-enthalpy of the thermal management system provided. In some embodiments, the first flow channel 601 is located between the first main line 10 and the first regulating valve 440, and the second flow channel 602 is located between the second regulating valve 430 and the second main line 40. In other words, when the first dual-flow channel heat exchanger 600 is located on the second branch 30, in cooling mode, the first flow channel 601 is located upstream of the first regulating valve 440, and the second flow channel 602 is located downstream of the second regulating valve 430. Figure 12 It can be seen that the enthalpy of the refrigerant flowing out of the outlet of the first flow channel 601 is lower than that of the refrigerant at the inlet of the first flow channel 601, while the enthalpy of the refrigerant flowing out of the outlet of the second flow channel 602 is higher than that of the refrigerant at the inlet of the second flow channel 602. The thermal management system 1 provided in this embodiment has the same... Figures 1 to 6 The beneficial effects of the thermal management system 1 shown in the figure will not be repeated here.

[0058] Please refer to the following: Figure 13 and Figure 14 , Figure 14 yes Figure 13 The pressure-enthalpy diagram corresponding to the thermal management system provided. In some embodiments, a first flow channel 601 is disposed between a first regulating valve 440 and a first refrigerant flow channel of a second heat exchanger 500, and a second flow channel 602 is disposed between a second regulating valve 430 and a second main line 40, or in other words, the second flow channel 602 is located downstream of the second regulating valve 430. Figure 14 It can be seen that the enthalpy of the refrigerant flowing out of the outlet of the first flow channel 601 is lower than that of the refrigerant at the inlet of the first flow channel 601, while the enthalpy of the refrigerant flowing out of the outlet of the second flow channel 602 is higher than that of the refrigerant at the inlet of the second flow channel 602. The thermal management system 1 provided in this embodiment has the same... Figures 1 to 6 The beneficial effects of the thermal management system 1 shown in the figure will not be repeated here.

[0059] Please refer to the following: Figure 15 and Figure 16 , Figure 16 yes Figure 15 The diagram shows the pressure-enthalpy of the thermal management system provided. In some embodiments, the first flow channel 601 of the first dual-flow heat exchanger 600 is disposed in the first main line 10, and the second flow channel 602 of the first dual-flow heat exchanger 600 is disposed in the second main line 40. The thermal management system 1 of this embodiment of the invention... Figure 5 The working principle of the thermal management system 1 shown in the figure is similar, and it has similar beneficial effects, so it will not be described in detail here.

[0060] In some embodiments, the thermal management system 1 has a cooling mode. In the cooling mode, after refrigerant is transferred via the first flow channel 601, the first regulating valve 440, and the refrigerant flow channel of the second heat exchanger 500, the refrigerant at the outlet of the refrigerant flow channel of the second heat exchanger 500 can be in the gas-liquid two-phase region, and the refrigerant transferred to the compressor 100 via the second flow channel 602 can be in the gas phase region. That is, the superheat of the refrigerant at the outlet of the second flow channel 602 is greater than the superheat of the refrigerant at the outlet of the refrigerant flow channel of the second heat exchanger 500. Through the above arrangement, the temperature uniformity of the second heat exchanger 500 can be improved, thereby improving the temperature uniformity of the battery; at the same time, the second flow channel 602 can increase the superheat of the refrigerant before entering the compressor 100, thereby improving the life of the compressor 100.

[0061] To achieve the functions of throttling and pressure reduction by the first regulating valve 440 and regulating the refrigerant flow rate into the second heat exchanger 500, the first regulating valve 440 may optionally be an expansion valve. In specific implementations, the first regulating valve 440 may be one of the following: an electronic expansion valve (EXV), a thermostatic expansion valve (TXV), or an electronic thermostatic expansion valve (ETXV) with shut-off function.

[0062] When the first regulating valve 440 is regulating the refrigerant, if the opening of the first regulating valve 440 is increased, the pressure loss of the refrigerant passing through the first regulating valve 440 will be relatively smaller or the flow rate will be relatively larger. Correspondingly, if the opening of the first regulating valve 440 is decreased, the pressure of the refrigerant flowing in the second heat exchanger 500 or the flow rate of the refrigerant flowing in the second heat exchanger 500 can be reduced.

[0063] When at least one throttling valve also includes a second regulating valve 430, in order to enhance the regulating effect of the second regulating valve 430 on the pressure of the refrigerant flow path in the second heat exchanger 500, the second regulating valve 430 is one of an expansion valve, a ball valve, or a throttling orifice. Specifically, the second regulating valve 430 can be one of an electronic expansion valve, a two-way ball valve, or a fixed throttling orifice.

[0064] When adjusting the refrigerant using the second regulating valve 430, increasing the opening of the second regulating valve 430 reduces the pressure loss of the refrigerant passing through it. This reduces the pressure difference between the refrigerant flowing in the refrigerant channel of the second heat exchanger 500 and the refrigerant to be drawn into the compressor 100, resulting in a relatively lower pressure of the refrigerant flowing in the second heat exchanger 500. Conversely, decreasing the opening of the first regulating valve 440 increases the pressure of the refrigerant flowing in the second heat exchanger 500.

[0065] The thermal management system 1 of this invention can be applied to a single refrigeration system or a heat pump system. The following description explains the application of the thermal management system 1 of this invention to a heat pump system.

[0066] Please refer to the following: Figures 17 to 20 , Figure 17 This is a schematic connection block diagram of the thermal management system provided in the ninth embodiment of the present invention. Figure 18 This is a schematic diagram of the first valve device provided in one embodiment of the present invention. Figure 19 yes Figure 17 The diagram shown in the image illustrates the refrigerant flow direction during heating in the second heat exchanger of the thermal management system. Figure 20 yes Figure 17 The diagram shows the refrigerant flow direction of the thermal management system during cooling in the second heat exchanger. The following explanation uses the example of the first dual-channel heat exchanger 600 located in the second branch 30, and the second thermal management unit 5000 including this first dual-channel heat exchanger 600. It can be understood that the configuration of the first dual-channel heat exchanger 600 can be similar to... Figures 1 to 16 The settings shown are the same, so I will not repeat them.

[0067] In some embodiments, at least one throttle valve further includes a second regulating valve 430. The refrigerant system may also include a first valve device 200, which is capable of switching the refrigerant flow direction of the refrigerant system. The first valve device 200 may be a four-way reversing valve. The first valve device 200 has four valve ports. The first valve port 201 of the first valve device 200 is connected to the outlet of the compressor 100 (the first port 101 of the compressor 100). The second valve port 202 of the first valve device 200 is connected to the inlet of the compressor 100 (the second port 102 of the compressor 100). The first interface of the first thermal management unit 300 and the first interface of the second thermal management unit 5000 are connected to the third valve port 203 of the first valve device 200. The second interface of the first thermal management unit 300 is connected to the first port of the first heat exchanger 700. The second interface of the second thermal management unit 5000 is connected to the first port of the first heat exchanger 700. The second port of the first heat exchanger 700 is connected to the fourth valve port 204 of the first valve device 200. It is understandable that the first valve device 200 may also be other types of valves or combinations of valves.

[0068] like Figure 19 As shown, in the heating mode of the thermal management system 1, the outlet of the compressor 100 is connected to the first thermal management unit 300 and the second thermal management unit 5000 through the first valve device 200. At this time, the high-temperature, high-pressure refrigerant discharged from the compressor 100 can release heat in the first thermal management unit 300 and / or the second thermal management unit 5000. The refrigerant discharged from the first thermal management unit 300 is throttled and enters the first heat exchanger 700, and the refrigerant discharged from the second thermal management unit 5000 enters the first heat exchanger 700. The refrigerant absorbs heat from the ambient air in the first heat exchanger 700, and then enters the inlet of the compressor 100 through the first valve device 200. Figure 20 As shown, in the cooling mode of the thermal management system 1, the outlet of the compressor 100 is connected to the first heat exchanger 700 through the first valve device 200. At this time, the high-temperature and high-pressure refrigerant discharged from the compressor 100 releases heat in the first heat exchanger 700. The refrigerant discharged from the first heat exchanger 700 is throttled and enters the first thermal management unit 300 to absorb heat and reduce the temperature inside the vehicle; and / or, the refrigerant discharged from the first heat exchanger 700 absorbs heat in the second thermal management unit 5000 to reduce the temperature of the battery. The refrigerant discharged from the first thermal management unit 300 and the second thermal management unit 5000 enters the inlet of the compressor 100 through the first valve device 200.

[0069] Optionally, the second thermal management unit 5000 may include a first regulating valve 440, a second regulating valve 430, a second heat exchanger 500, and a first dual-channel heat exchanger 600. In this case, the first dual-channel heat exchanger 600 is located on the second branch 30 of the refrigerant transmission path. The second heat exchanger 500 is in direct or indirect contact with the battery and is used to regulate the battery temperature. Optionally, the second heat exchanger 500 can be a direct cooling plate. The first dual-channel heat exchanger 600 has a first channel 601 and a second channel 602, both of which are refrigerant channels. The refrigerant in the first channel 601 can exchange heat with the refrigerant in the second channel 602. The second interface of the second thermal management unit 5000 is connected to the first channel 601 of the first dual-channel heat exchanger 600. The third valve port 203 of the first valve device 200 is connected to the second channel 602 of the first dual-channel heat exchanger 600 through the second regulating valve 430. Figure 19 As shown, the first interface of the second thermal management unit 5000 is a port of the second regulating valve 430 or is connected to that port of the second regulating valve 430, or as... Figure 13 As shown, the first interface of the second thermal management unit 5000 can be connected to the second flow channel 602, and the second interface of the second thermal management unit 5000 is a port of the first regulating valve 440 (e.g., Figure 13 (as shown), or connected to this port of the first regulating valve 430, or as... Figure 9 As shown, the second interface of the second thermal management unit 5000 is connected to the first flow channel 601 of the first dual-flow channel heat exchanger 600. In this embodiment, the second regulating valve 430 has the functions of regulating pressure and direct flow, or the second regulating valve 430 is an expansion valve with a fully open function, and the first regulating valve 440 has a bidirectional throttling function.

[0070] like Figure 19As shown, in battery heating mode, the refrigerant flows as follows: the third valve port 203 of the first valve device 200, the second regulating valve 430, the second flow channel 602 of the first dual-flow heat exchanger 600, the refrigerant flow channel of the second heat exchanger 500, the first regulating valve 440, the first flow channel 601 of the first dual-flow heat exchanger 600, and the first port of the first heat exchanger 700. At this time, the second regulating valve 430 is fully open and the first regulating valve 440 is in a throttling state. In battery heating mode, due to the second regulating valve 430 being fully open and the first regulating valve 440 being throttled, high-temperature and high-pressure refrigerant from compressor 100 enters the second flow channel 602 of the first dual-flow channel heat exchanger 600 and the refrigerant flow channel of the second heat exchanger 500. The refrigerant in the second heat exchanger 500 releases heat to heat the battery. After being throttled by the first regulating valve 440, the refrigerant enters the first flow channel 601 of the first dual-flow channel heat exchanger 600. Because the refrigerant in the first flow channel 601 of the first dual-flow channel heat exchanger 600 and the first dual-flow channel heat exchanger 440... A temperature difference exists between the refrigerant in the second flow channel 602 of the flow channel heat exchanger 600 and the refrigerant undergoes heat exchange in the first dual-flow channel heat exchanger 600. This results in the refrigerant entering the second heat exchanger 500 having a lower temperature than the refrigerant at the compressor outlet 100. Since the first thermal management unit 300 does not have a first dual-flow channel heat exchanger 600, the temperature difference between the inlet and outlet sides of the second heat exchanger 500 is reduced, preventing the battery temperature from becoming excessively high and improving battery temperature uniformity, thus keeping the battery temperature within a reasonable range. This also relatively reduces the temperature difference between the inlet and outlet sides of the second heat exchanger 500, improving the temperature uniformity of the second heat exchanger 500 and making the battery temperature relatively uniform. If battery temperature needs adjustment, the heat exchange within the first dual-flow channel heat exchanger 600 can be adjusted by controlling the opening of the second regulating valve 430 and the first regulating valve 440, thereby adjusting the heat exchange between the battery and the second heat exchanger 500. It should be noted that the "outlet side and inlet side of the second heat exchanger 500" mentioned here are defined in the case of battery heating mode.

[0071] like Figure 20As shown, in battery cooling mode, the refrigerant flows as follows: first port of the first heat exchanger 700, first channel 601 of the first dual-channel heat exchanger 600, first regulating valve 440, second heat exchanger 500, second channel 602 of the first dual-channel heat exchanger 600, second regulating valve 430, and third valve port 203 of the first valve device 200. At this time, the second regulating valve 430 is fully open and the first regulating valve 440 is in a throttling state. After the refrigerant condenses in the first heat exchanger 700, it further condenses in the first channel 601 of the first dual-channel heat exchanger 600. After being throttled and depressurized by the first regulating valve 440, the refrigerant absorbs heat from the battery in the second heat exchanger 500 to lower the battery temperature. Then, the refrigerant enters the second channel 602 of the first dual-channel heat exchanger 600 and exchanges heat with the refrigerant in the first channel 601. The first thermal management unit 300's use of the first dual-channel heat exchanger 600 allows for a more uniform temperature distribution of the refrigerant in the second heat exchanger 500, resulting in a more uniform battery temperature and improved battery performance. If further precise temperature adjustment of the battery is required, the heat exchange within the first dual-channel heat exchanger 600 can be adjusted by controlling the opening of the second regulating valve 430 and the first regulating valve 440, thereby adjusting the heat exchange between the battery and the second heat exchanger 500.

[0072] The thermal management system 1 of this invention can be used in a vehicle. A first thermal management unit 300 can be installed inside the vehicle's air conditioning unit, and a second thermal management unit 5000 can regulate the temperature of the vehicle's battery. In some embodiments, the refrigerant system may further include a fourth regulating valve 410. The first thermal management unit 300 includes a third heat exchanger 310 and a fourth heat exchanger 320. The third heat exchanger 310 is connected to the fourth heat exchanger 320 via the fourth regulating valve 410. One port of the third heat exchanger 310 is a first interface of the first thermal management unit 300, and one port of the fourth heat exchanger 320 is a second interface of the first thermal management unit. The third heat exchanger 310 and the fourth heat exchanger 320 are arranged sequentially along the flow direction of the working medium. Figure 20 As shown, along the refrigerant flow direction, the fourth heat exchanger 320 is located upstream of the third heat exchanger 310. Along the refrigerant flow direction, the fourth regulating valve 410 is positioned between the third heat exchanger 310 and the fourth heat exchanger 320. One port of the third heat exchanger 310 is connected to the third valve port 203 of the first valve device 200, meaning this port of the third heat exchanger 310 serves as the first interface of the first thermal management unit 300. One port of the fourth heat exchanger 320 is connected to the first port of the first heat exchanger 300 via the third regulating valve 420, meaning this port of the fourth heat exchanger 320 serves as the second interface of the first thermal management unit. Optionally, the third regulating valve 420 can be an expansion valve.

[0073] In this embodiment, the fourth regulating valve 410 is an expansion valve with a straight-through function, and the third regulating valve 420 has a bidirectional throttling function. For example... Figure 19 As shown, in the vehicle's heating mode, the refrigerant flows as follows: the third valve port 203 of the first valve device 200, the third heat exchanger 310, the fourth regulating valve 410, the fourth heat exchanger 320, and the third regulating valve 420. The high-temperature, high-pressure refrigerant releases heat in the third heat exchanger 310 and the fourth heat exchanger 320, and then, after being throttled and depressurized by the third regulating valve 420, the refrigerant flows into the first heat exchanger 700, where it absorbs heat. At this time, the fourth regulating valve 410 is fully open. Figure 20 As shown, in the vehicle's cooling mode, the refrigerant flows as follows: first port of the first heat exchanger 700, third regulating valve 420, fourth heat exchanger 320, fourth regulating valve 410, and third heat exchanger 310. The refrigerant, after being throttled by the third regulating valve 420, enters the fourth heat exchanger 320 and the third heat exchanger 310 and absorbs heat. At this time, the fourth regulating valve 410 is fully open. Specifically, after the refrigerant condenses and releases heat in the first heat exchanger 700, the refrigerant, after being throttled and depressurized by the third regulating valve 420, flows into the fourth heat exchanger 320 and the third heat exchanger 310 and absorbs heat, thereby reducing the temperature of the passenger compartment.

[0074] The thermal management system 1 also includes a vehicle heating and dehumidification mode. Compared with the vehicle heating mode, in the vehicle heating and dehumidification mode, the fourth regulating valve 410 is in a throttling state. At this time, the refrigerant absorbs heat in the fourth heat exchanger 320 to reduce the airflow temperature of the air conditioning unit, thereby reducing the airflow humidity. Since the third heat exchanger 310 is located downwind of the fourth heat exchanger 320 and the refrigerant releases heat in the third heat exchanger 310, the airflow increases the ambient temperature inside the vehicle when it flows through the third heat exchanger 310, thereby improving the comfort of the people inside the vehicle.

[0075] It can be seen that by controlling the opening and closing of the corresponding first regulating valve 440 and the third regulating valve 420, the vehicle's cooling mode and the battery's cooling mode can be controlled to operate simultaneously or independently; similarly, by controlling the opening and closing of the corresponding regulating valves, the vehicle's heating mode and the battery's heating mode can be controlled to operate simultaneously or independently.

[0076] Please refer to the following: Figures 21 to 24 , Figure 21 This is a schematic connection block diagram of the thermal management system provided in the tenth embodiment of the present invention. Figure 22 This is a schematic connection diagram of the thermal management system provided in the eleventh embodiment of the present invention. Figure 23 yes Figure 22 A schematic diagram showing the flow direction of refrigerant and coolant in the heat recovery mode of the medium-temperature management system. Figure 24 yes Figure 22A schematic diagram showing the flow of refrigerant and coolant in the thermal management system when the second heat exchanger is cooling and the compressor is running. In conjunction with the above possible implementations, the thermal management system 1 of this embodiment also includes a coolant system, which includes a water pump 950, a fifth heat exchanger 930, and a motor temperature controller 910. The water pump 950 drives the coolant to circulate within the coolant system, the fifth heat exchanger 930 releases heat from the coolant to the environment, and the motor temperature controller 910 exchanges heat with the motor or electronic components to control the temperature of the motor or electronic components. The thermal management system 1 may further include a second dual-channel heat exchanger 800, which includes a first channel and a second channel. The first channel of the second dual-channel heat exchanger 800 is a refrigerant channel, and the second channel is a coolant channel. The refrigerant in the first channel of the second dual-channel heat exchanger 800 and the coolant in the second channel of the second dual-channel heat exchanger 800 can exchange heat in the second dual-channel heat exchanger 800. Along the flow direction of the working medium, the first heat exchanger 700 and the second channel of the second dual-channel heat exchanger 800 are located between the fourth valve port 204 of the first valve device 200 and the second interface of the second thermal management unit 5000. The fifth heat exchanger 930, the coolant channel of the second dual-channel heat exchanger 800, the water pump 950, and the coolant channel of the second heat exchanger 500 are connected in series. In this embodiment, the fourth valve port 204 of the first valve device 200 is connected to the first heat exchanger 700 through the first flow channel of the second dual-flow heat exchanger 800. That is, the refrigerant flowing out from the fourth valve port 204 of the first valve device 200 enters the first heat exchanger 700 through the first flow channel of the second dual-flow heat exchanger 800.

[0077] In some embodiments, the second heat exchanger 500 also includes a first flow channel and a second flow channel. The first flow channel of the second heat exchanger 500 is part of a refrigerant flow channel, and the second flow channel of the second heat exchanger 500 is part of a coolant flow channel. The first flow channel and the second flow channel of the second heat exchanger 500 are not connected. The second flow channel of the second heat exchanger 500 is part of a coolant system. The connection method of the first flow channel of the second heat exchanger 500 is as follows: Figures 1 to 21 The connection method of the second heat exchanger 500 is not described in detail here.

[0078] Please see Figure 25 , Figure 25 yes Figure 22The diagram shows the structure of the second heat exchanger. The second heat exchanger 500 includes a first connecting wall 510, which is in direct or indirect contact with the battery. Direct contact means that the first connecting wall 510 is in direct contact with the battery, while indirect contact means that there is a heat-conducting component between the first connecting wall 510 and the battery. The first connecting wall 510 includes a first wall portion 511 and a second wall portion 512, which are alternately arranged. Along the extending direction of the first connecting wall 510, one side of the first wall portion 511 is a second wall portion 512, and the other side of the first wall portion 511 is another second wall portion 512. Similarly, one side of the second wall portion 512 is located on a first wall portion 511, and the other side of the second wall portion 512 is another first wall portion 511. Along the plane perpendicular to the first wall portion 511, one side of the first connecting wall 510 is a refrigerant flow channel and a coolant flow channel, and the other side of the first connecting wall 510 is, for example, a heat source of the battery. Specifically, one side of the first wall portion 511 is the refrigerant flow channel 501 of the second heat exchanger 500, and the other side of the first wall portion 511 is the battery. One side of the second wall portion 512 is the coolant flow channel 502 of the second heat exchanger 500, and the other side of the second wall portion 512 is the battery. It can be seen that the refrigerant in the second heat exchanger 500 can exchange heat with the battery, and the coolant inside the second heat exchanger 500 can also exchange heat with the battery. The second heat exchanger 500 includes a coolant flow channel 502 and a refrigerant flow channel 501. Both the refrigerant and coolant in the second heat exchanger 500 can exchange heat with the battery to control the battery temperature, which simplifies the thermal management system 1 and reduces the installation space of the thermal management system 1. The refrigerant and coolant have different thermal inertia, and their advantages can be utilized to better control the battery temperature. The refrigerant and coolant inside the second heat exchanger 500 may or may not exchange heat.

[0079] Please refer to further information. Figures 21 to 24The water pump 950, the second flow channel (coolant flow channel) of the second heat exchanger 500, the motor temperature controller 910, the second flow channel of the second dual-flow channel heat exchanger 800, and the fifth heat exchanger 930 are connected in series. The coolant system may also include a third branch 921, a fourth branch 922, a first water valve 940, and a second water valve 960. The first water valve 940 is configured to allow coolant to pass through the third branch 921 and / or the fifth heat exchanger 930, and the second water valve 960 is configured to allow coolant to pass through the fourth branch 922 and / or the coolant flow channel of the second heat exchanger 500. The first water valve 940 and the second water valve 960 can be three-way valves or three-way proportional regulating valves. The second water valve 960 can regulate the proportion of coolant entering the second heat exchanger 500. For example, both the first water valve 940 and the second water valve 960 include three ports. The first water valve 940 cooperates with the third branch 921. By controlling the first water valve 940, it is possible to select whether the third branch 921 bypasses the fifth heat exchanger 930. Specifically, the three ports of the first water valve 940 are respectively connected to the first port of the second flow channel of the second dual-flow channel heat exchanger 800, the first port of the third branch 921, and the first port of the fifth heat exchanger 930. The second port of the third branch 921 and the second port of the fifth heat exchanger 930 are connected to the inlet of the water pump 950.

[0080] The second water valve 960 cooperates with the fourth branch 922 to select whether the fourth branch 922 bypasses the second flow channel (coolant flow channel) of the second heat exchanger 500. Specifically, the three ports of the second water valve 960 are respectively connected to the outlet of the water pump 950, the first port of the fourth branch 922, and the first port of the second flow channel of the second heat exchanger 500. The second port of the fourth branch 922 and the second port of the second flow channel of the second heat exchanger 500 are connected to one port of the motor temperature controller 910, and the other port of the motor temperature controller 910 is connected to the second port of the second flow channel of the second dual-flow channel heat exchanger 800.

[0081] The following describes the operating states of the thermal management system 1 related to the coolant system. During vehicle cooling, the battery cooling modes include refrigerant cooling and / or coolant cooling. The refrigerant cooling mode is the same as in any of the above embodiments and will not be described in detail again. In the coolant cooling mode, the battery coolant cooling mode includes two forms: compressor 100 on and off. These two operating modes are described in detail below.

[0082] First form: Please refer to Figure 26 , Figure 26 yes Figure 22A schematic diagram of the coolant flow direction in the intermediate heat management system when the second heat exchanger is cooling and the compressor is off. In this first configuration, the water pump 950 is on, the compressor 100 is off, and the first water valve 940 is configured to close the flow path of the third branch 921 and open the flow path of the fifth heat exchanger 930. Specifically, the compressor 100 is off, the water pump 950 is on, and the third branch 921 is closed by controlling the first water valve 940. The coolant flowing in the second heat exchanger 500 exchanges heat with the battery and then releases heat through the fifth heat exchanger 930 to reduce the battery's heat. The battery's heat can also be released through the fifth heat exchanger 930. At this point, the fourth branch 922 can be closed by controlling the second water valve 960. The relatively low-temperature coolant discharged from the fifth heat exchanger 930 first passes through the second flow channel (coolant flow channel) of the second heat exchanger 500 and then enters the motor temperature controller 910. Alternatively, the fourth branch 922 can be opened by controlling the second water valve 960. Part of the coolant enters the battery temperature controller through the fourth branch 922, while the other part of the coolant first passes through the second flow channel of the second heat exchanger 500 and then enters the motor temperature controller 910. Compared to when the fourth branch 922 is closed, the temperature of the motor temperature controller 910 can be reduced relatively quickly. If the second water valve 960 is a proportional valve, the proportion of coolant entering the second heat exchanger 500 can also be adjusted.

[0083] For the second form, please refer to [link / reference]. Figure 24 The compressor 100 is in the open state and the third regulating valve 430 and / or the first regulating valve 440 is in the closed state. The first valve device 200 is configured to allow the refrigerant discharged by the compressor 100 to enter the first thermal management unit 300. The first water valve 940 is configured to bypass the fifth heat exchanger 930. When the second thermal management unit 5000 also includes a second regulating valve 430, specifically, the compressor 100 is turned on, the second regulating valve 430 and / or the first regulating valve 440 are closed, and the first valve device 200 allows the refrigerant discharged by the compressor 100 to enter the first thermal management unit 300. The refrigerant releases heat in the first thermal management unit 300. After the third regulating valve 420 throttles the flow, the refrigerant absorbs the heat of the coolant in the second dual-channel heat exchanger 800, reducing the temperature of the coolant. Driven by the water pump 950, the coolant enters the second heat exchanger 500 to reduce the temperature of the battery. At this time, the third branch 921 can bypass the fifth heat exchanger 930, or the flow of coolant into the second heat exchanger 500 can be regulated by the second water valve 960.

[0084] The battery's heating modes include refrigerant heating mode, and refrigerant heating mode and... Figure 19 The refrigerant heating mode shown is the same and will not be described in detail again.

[0085] Thermal management system 1 also includes a heat recovery mode; please refer to [link / reference]. Figure 23In the vehicle heating mode, the compressor 100 is turned on, the water pump 950 is turned on, the first valve device 200 is configured to allow the refrigerant discharged by the compressor 100 to enter the first thermal management unit 300 and / or the second thermal management unit 5000; the first regulating valve 440 and / or the third regulating valve 420 are opened, the first water valve 940 is configured to allow the third branch 921 to bypass the fifth heat exchanger 930, and the second water valve 960 allows the fourth branch 922 to bypass the coolant flow channel of the second heat exchanger 500. Specifically, the refrigerant throttled by the third regulating valve 420 enters the first channel of the first heat exchanger 700 and the second dual-channel heat exchanger 800. The refrigerant absorbs heat in the first heat exchanger 700. If the ambient temperature is low, the thermal management system 1 cannot absorb enough heat through the first heat exchanger 700. In this case, the water pump 950 is activated, the second water valve 960 is controlled to open the fourth branch 922, and the first water valve 940 is controlled to open the third branch 921. The coolant absorbing heat from the motor thermostat and / or battery exchanges heat with the refrigerant in the second dual-channel heat exchanger 800, thus recovering and utilizing the heat generated by the motor. Similarly, the heat recovery mode can also be operated in the battery refrigerant heating mode, or in the battery refrigerant heating and vehicle heating modes.

[0086] It should be noted that the above embodiments are only used to illustrate the present invention and are not intended to limit the technical solutions described in the present invention. Although the present invention has been described in detail with reference to the above embodiments, those skilled in the art should understand that they can still make modifications or equivalent substitutions to the present invention. All technical solutions and improvements that do not depart from the spirit and scope of the present invention should be covered within the scope of the claims of the present invention.

Claims

1. A thermal management system, comprising a compressor and a first heat exchanger, wherein a first port of the compressor is connected to a second port of the first heat exchanger, characterized in that, The thermal management system further includes a first thermal management unit, a second thermal management unit, and a first dual-channel heat exchanger. Along the flow direction of the working medium in the thermal management system, at least a portion of the first thermal management unit, the second thermal management unit, and the first dual-channel heat exchanger are located between the second port of the compressor and the first port of the first heat exchanger. The first thermal management unit can exchange heat with a first heat source, and the second thermal management unit can exchange heat with a second heat source. The second thermal management unit can regulate the temperature of the vehicle battery, and the first thermal management unit can be used for thermal management of the vehicle interior temperature. The first dual-channel heat exchanger includes a first channel and a second channel, and the refrigerant in the first channel can exchange heat with the refrigerant in the second channel. The second thermal management unit includes at least one throttle valve and a second heat exchanger. The at least one throttle valve includes a first regulating valve capable of regulating the pressure of the refrigerant in the second heat exchanger. Wherein, along the flow direction of the working medium, the first regulating valve is disposed between the first heat exchanger and the second heat exchanger, the first flow channel is disposed between the first heat exchanger and the second heat exchanger, and the second flow channel is disposed between the second heat exchanger and the compressor; The thermal management system includes a first main line, a first branch line, a second branch line, and a second main line. The first port of the first heat exchanger is connected to both the first branch line and the second branch line via the first main line. The first branch line and the second branch line are connected to the second port of the compressor via the second main line. The first branch line and the second branch line are arranged in parallel. The first thermal management unit is located in the first branch, at least part of the second thermal management unit is located in the second branch, the first dual-channel heat exchanger is located in the second branch, or the first channel of the first dual-channel heat exchanger is located in the first main line, and the second channel of the first dual-channel heat exchanger is located in the second main line.

2. The thermal management system according to claim 1, characterized in that, The first dual-channel heat exchanger is located in the second branch. On the second branch, the first flow channel is located between the first main line and the first regulating valve, or the first flow channel is located between the first regulating valve and the second heat exchanger, and the second flow channel is located between the second heat exchanger and the second main line.

3. The thermal management system according to claim 1, characterized in that, The at least one throttling valve further includes a second regulating valve capable of regulating the pressure of the refrigerant in the second heat exchanger along the flow direction of the working medium. The second regulating valve is disposed between the second heat exchanger and the compressor. On the second branch, the first flow channel is located between the first main line and the first regulating valve, or the first flow channel is located between the first regulating valve and the second heat exchanger, and the second flow channel is located between the second heat exchanger and the second regulating valve, or the second flow channel is located between the second regulating valve and the second main line; Alternatively, on the second branch, the first flow channel of the first dual-flow heat exchanger is located on the first main line, and the second flow channel of the first dual-flow heat exchanger is located on the second main line.

4. The thermal management system according to any one of claims 1 to 3, characterized in that, The thermal management system has a cooling mode. In the cooling mode, after passing through the first channel of the first dual-channel heat exchanger, the first regulating valve, and the second heat exchanger, the refrigerant at the outlet of the second heat exchanger can be in the gas-liquid two-phase region. After being transferred through the second channel of the first dual-channel heat exchanger, the superheat of the refrigerant at the outlet of the second channel is greater than the superheat of the refrigerant at the outlet of the second heat exchanger.

5. The thermal management system according to any one of claims 1 to 3, characterized in that, The first regulating valve is an expansion valve, and the at least one throttling valve further includes a second regulating valve, which can regulate the pressure of the refrigerant in the second heat exchanger. The second regulating valve is one of an expansion valve, a ball valve, and a throttling orifice.

6. The thermal management system according to any one of claims 1 to 3, characterized in that, The thermal management system includes a refrigerant system. At least one of the throttling valves also includes a second regulating valve. The thermal management system also includes a first valve device and a third regulating valve. The first valve device is capable of switching the refrigerant flow direction of the refrigerant system. The first port of the compressor is connected to the first valve port of the first valve device. The first interface of the first thermal management unit and the first interface of the second thermal management unit are respectively connected to the third valve port of the first valve device. The second interface of the first thermal management unit is connected to the first port of the first heat exchanger through the third regulating valve. The second interface of the second thermal management unit is connected to the first port of the first heat exchanger. The second port of the first heat exchanger is connected to the fourth valve port of the first valve device. The first interface of the second thermal management unit is a port of the second regulating valve, or is connected to the second regulating valve, or is connected to the second flow channel of the first dual-flow channel heat exchanger. The second interface of the second thermal management unit is a port of the first regulating valve, or is connected to that port of the first regulating valve, or is connected to the first flow channel of the first dual-flow channel heat exchanger.

7. The thermal management system according to claim 6, characterized in that, The thermal management system is applied to a vehicle, the first thermal management unit is located in the vehicle's air conditioning unit, and the second thermal management unit can regulate the temperature of the vehicle's battery; The first thermal management unit further includes a fourth regulating valve, a third heat exchanger, and a fourth heat exchanger. The third heat exchanger is connected to the fourth heat exchanger through the fourth regulating valve. One port of the third heat exchanger is a first interface of the first thermal management unit, and one port of the fourth heat exchanger is a second interface of the first thermal management unit. The third heat exchanger and the fourth heat exchanger are arranged along the refrigerant flow direction.

8. The thermal management system according to claim 6, characterized in that, The thermal management system is applied to a vehicle. The thermal management system also includes a coolant system. The second heat exchanger has a refrigerant flow channel and a coolant flow channel. The coolant system includes the coolant flow channel of the second heat exchanger. The refrigerant flow channel and the coolant flow channel of the second heat exchanger are not connected. The second heat exchanger includes a first connecting wall, which is in direct or indirect contact with a heat source for heat exchange. The first connecting wall includes a first wall portion and a second wall portion. Along the extension direction of the first connecting wall, the first wall portion and the second wall portion are alternately arranged. Along the plane direction perpendicular to the first connecting wall, one side of the first wall portion is a refrigerant flow channel and the other side of the first wall portion is a heat source. One side of the second wall portion is a coolant flow channel and the other side of the second wall portion is a heat source.

9. The thermal management system according to claim 8, characterized in that, The thermal management system further includes a second dual-channel heat exchanger, which has a refrigerant channel and a coolant channel. The coolant system further includes a water pump, a fifth heat exchanger, the coolant channel of the second dual-channel heat exchanger, and the coolant channel of the second heat exchanger. Along the flow direction of the working medium, the refrigerant channels of the first heat exchanger and the second dual-channel heat exchanger are located between the fourth valve port of the first valve device and the second interface of the second thermal management unit. The fifth heat exchanger, the coolant channel of the second dual-channel heat exchanger, the water pump, and the coolant channel of the second heat exchanger are connected in series.

10. The thermal management system according to claim 9, characterized in that, The coolant system further includes a third branch, a first water valve, a fourth branch, and a second water valve. The first water valve is configured to allow coolant to pass through the third branch and / or the fifth heat exchanger, and the second water valve is configured to allow coolant to pass through the coolant flow channel of the fourth branch and / or the second heat exchanger. The coolant system also includes a motor temperature controller, which is arranged in series with the coolant flow channel of the second dual-channel heat exchanger. The thermal management system also includes a heat recovery mode. In the heat recovery mode, the compressor is turned on, the water pump is turned on, the first valve device is configured to allow the refrigerant discharged by the compressor to enter the first thermal management unit and / or the second thermal management unit, the first regulating valve and / or the third regulating valve are opened, the first water valve is configured to allow the third branch to bypass the fifth heat exchanger, and the second water valve allows the fourth branch to bypass the second heat exchanger.

11. The thermal management system according to claim 10, characterized in that, The thermal management system includes a coolant cooling mode; In the coolant cooling mode, the water pump is on, the compressor is off, and the first water valve is configured to close the third branch and open the flow path of the fifth heat exchanger. Alternatively, in the coolant cooling mode, the compressor is on and the first regulating valve is off, the first valve device is configured to allow the refrigerant discharged from the compressor to enter the first thermal management unit, and the first water valve is configured to bypass the fifth heat exchanger.

12. The thermal management system according to claim 11, characterized in that, The second water valve is a proportional regulating valve, which can regulate the proportion of coolant entering the second heat exchanger.

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