Thermal management system and vehicle

Abstract

This invention provides a thermal management system and a vehicle, relating to the field of vehicle technology. The thermal management system includes a refrigeration circuit, a first cooling circuit, a second cooling circuit, and a commutation assembly. The first cooling circuit is thermally connected to the refrigeration circuit and configured to absorb heat from the refrigeration circuit. The second cooling circuit is thermally connected to the refrigeration circuit and configured to absorb cold energy from the refrigeration circuit. The commutation assembly connects to both the first and second cooling circuits and is configured to control the opening and closing of the cooling channels of the first and second cooling circuits. The thermal management system in this embodiment of the invention, through the control of the commutation assembly, enables the vehicle to perform cooling and heating in various environments, improving the system's applicability and integration, and reducing system costs.

Description

Technical Field

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

[0002] Thermal management systems can manage the thermal performance of a vehicle's air conditioning, power battery, electric drive, etc., to meet the vehicle's operating requirements. However, according to relevant technologies, vehicle thermal management systems cannot operate well in low-temperature environments, thus affecting the vehicle's operation. Summary of the Invention

[0003] In view of the above problems, the present invention provides a thermal management system that can realize cooling and heating in various environments through the control of the commutation component, thereby improving the system's applicability and integration, and reducing system costs.

[0004] In a first aspect, the present invention provides a thermal management system, the thermal management system comprising a refrigeration circuit, a first cooling circuit, a second cooling circuit, and a commutation assembly, wherein the first cooling circuit is thermally connected to the refrigeration circuit and configured to absorb heat from the refrigeration circuit, the second cooling circuit is thermally connected to the refrigeration circuit and configured to absorb cold energy from the refrigeration circuit, and the commutation assembly is connected to the first cooling circuit and the second cooling circuit respectively and configured to control the opening and closing of the first cooling circuit and the second cooling circuit.

[0005] In the technical solution of this invention, the vehicle can be cooled and heated in various environments by controlling the commutation component, thereby improving the applicability and integration of the system and reducing system costs.

[0006] In some embodiments, the refrigeration circuit includes a first heat exchanger, a throttling device, a second heat exchanger, and a compressor connected in sequence. The first heat exchanger is thermally connected to the first cooling circuit, and the second heat exchanger is thermally connected to the second cooling circuit. This allows the first cooling circuit to absorb heat from the refrigeration circuit more effectively, and the second cooling circuit to absorb cold energy from the refrigeration circuit more effectively, thereby improving the system's operating capacity.

[0007] In some embodiments, the thermal management system further includes a third cooling circuit connected to the commutation assembly, the commutation assembly being configured to control the connection and disconnection of any two of the first, second, and third cooling circuits; wherein the first cooling circuit includes a heating component, and the third cooling circuit includes a battery component. Thus, the thermal management system can achieve cooling and heating in various environments, and utilize heat and cold to raise and lower the temperature of components in the circuits, meeting the vehicle's operational requirements.

[0008] In some embodiments, the thermal management system further includes a fourth cooling circuit connected to the commutation assembly, the commutation assembly being configured to control the connection and disconnection of any two of the first, second, third, and fourth cooling circuits; wherein the fourth cooling circuit includes an electric drive assembly and a radiator, the electric drive assembly being connected to the radiator. Thus, the thermal management system can achieve cooling and heating in various environments, utilizing components in the heat and cold circuits for temperature increase and decrease, meeting the vehicle's operational requirements.

[0009] In some embodiments, the thermal management system further includes a fifth cooling circuit connected to the commutation assembly, the commutation assembly being configured to control the connection and disconnection of any two of the first, second, and fifth cooling circuits; wherein the first cooling circuit includes a heating component, and the fifth cooling circuit includes an electric drive component and a radiator, the electric drive component being connected to the radiator. Thus, the thermal management system can achieve cooling and heating in various environments, utilizing components in the heat and cold circuits for temperature increase and decrease, meeting the vehicle's operational needs.

[0010] In some embodiments, the reversing assembly includes a first reversing valve and a second reversing valve. The first reversing valve connects to the first cooling circuit, the second cooling circuit, the third cooling circuit, and the fourth cooling circuit, and is used to control the connection and disconnection of the first cooling circuit and the second cooling circuit, the first cooling circuit and the fourth cooling circuit, the second cooling circuit and the third cooling circuit, the second cooling circuit and the fourth cooling circuit, and the third cooling circuit and the fourth cooling circuit. The second reversing valve connects to the first cooling circuit and the third cooling circuit, and is used to control the connection and disconnection of the first cooling circuit and the third cooling circuit. Thus, the flow distribution of the cooling medium can be easily achieved through the first and second reversing valves, and the cost of the thermal management system is reduced.

[0011] In some embodiments, the reversing assembly further includes a first reversing valve, a third reversing valve, and a check valve. The first reversing valve connects the first cooling circuit, the second cooling circuit, the third cooling circuit, and the fourth cooling circuit, and is used to control the connection and disconnection of the first cooling circuit and the second cooling circuit, the first cooling circuit and the fourth cooling circuit, the second cooling circuit and the third cooling circuit, the second cooling circuit and the fourth cooling circuit, and the third cooling circuit and the fourth cooling circuit. The third reversing valve has a first end, a second end, and a third end. The first end and the second end are connected in series with the first cooling circuit, and the second end is connected to the third cooling circuit. The check valve connects the first cooling circuit and the third cooling circuit. Thus, the flow distribution of the cooling medium can be easily achieved through the first reversing valve, the second reversing valve, and the check valve, and the cost of the thermal management system is reduced.

[0012] In some embodiments, the first cooling circuit further includes a first drive element, and the cooling circuit includes a first heat exchanger. The first drive element, the heating component, the first heat exchanger, and the commutation component are sequentially connected to form a circuit, and the first heat exchanger is used to heat the cooling medium. Thus, the first cooling circuit can provide heating to the passenger compartment and to other components of the vehicle, meeting the user's needs.

[0013] In some embodiments, the third cooling circuit further includes a cooling supply component and a second drive component, wherein the second drive component, the cooling supply component, the battery assembly, and the commutation component are sequentially connected to form a circuit. Thus, the third cooling circuit can supply cooling to the passenger compartment and refrigerate other components of the vehicle, meeting the user's needs.

[0014] In some embodiments, the reversing assembly includes a fourth reversing valve connected to the cooling assembly, the battery assembly, and the second cooling circuit. When the second cooling circuit is connected to the third cooling circuit, the fourth reversing valve is configured to selectively control the flow of cooling medium to the cooling assembly and the battery assembly. This enriches the functionality of the thermal management system and meets user needs.

[0015] In some embodiments, the reversing assembly includes a fifth reversing valve having a fourth end, a fifth end, and a sixth end. The fourth end is connected to the cooling assembly, the fifth end is connected to the inlet of the battery assembly, and the sixth end is connected to the outlet of the battery assembly. The fifth reversing valve is configured to selectively control the fourth end to be connected to the fifth and sixth ends. This enriches the functionality of the thermal management system and meets user needs.

[0016] In some embodiments, the fifth cooling circuit further includes a third drive element, and the heat sink, the third drive element, the electric drive assembly, and the commutation assembly are connected in a loop. Thus, heat dissipation of the electric drive assembly can be achieved through the fourth cooling circuit.

[0017] In some embodiments, the fifth cooling circuit further includes a first branch, one end of which is connected to the inlet of the radiator, and the other end of which is connected to the outlet of the radiator. This reduces fluid resistance and improves the stability of the thermal management system while simultaneously achieving both heating and cooling of the battery assembly.

[0018] In some embodiments, the refrigeration circuit further includes a bypass valve having an inlet end and an outlet end, the inlet end being connected to the inlet of the compressor and the outlet end being connected to the outlet of the compressor. This configuration ensures the normal operation of the thermal management system in low-temperature environments.

[0019] In a second aspect, the present invention provides a vehicle that includes the thermal management system described above.

[0020] In the technical solution of this invention embodiment, by applying the aforementioned thermal management system, the vehicle integration can be improved and the vehicle cost can be reduced.

[0021] Other features and advantages disclosed in this application will be set forth in the following description, or some features and advantages may be inferred from the description or determined without doubt, or may be learned by practicing the above-described technology disclosed in this application.

[0022] To make the above-mentioned objectives, features and advantages of this application more apparent and understandable, preferred embodiments are described below in detail with reference to the accompanying drawings. Attached Figure Description

[0023] Various other advantages and benefits will become apparent to those skilled in the art upon reading the detailed description of the preferred embodiments below. The accompanying drawings are for illustrative purposes only and are not intended to limit the scope of this application. Furthermore, the same reference numerals denote the same parts throughout the drawings. In the drawings:

[0024] Figure 1 This is a schematic diagram of the thermal management system (refrigeration circuit, first cooling circuit, second cooling circuit and commutation assembly) in some embodiments of the present invention.

[0025] Figure 2 This is a schematic diagram of the thermal management system (refrigeration circuit, first cooling circuit, second cooling circuit, third cooling circuit, fourth cooling circuit and commutation assembly) in some embodiments of the present invention.

[0026] Figure 3 These are schematic diagrams of the thermal management system in some embodiments of the present invention (third operating mode and fourth operating mode).

[0027] Figure 4 These are schematic diagrams of the thermal management system in some embodiments of the present invention (second operating mode and fifth operating mode).

[0028] Figure 5 These are schematic diagrams of the thermal management system in other embodiments of the present invention (second operating mode and fifth operating mode).

[0029] Figure 6 This is a schematic diagram of the thermal management system in some embodiments of the present invention (fifth working mode).

[0030] Figure 7 This is a schematic diagram of the thermal management system in other embodiments of the present invention (fifth working mode).

[0031] Figure 8 This is a schematic diagram of the thermal management system in some embodiments of the present invention (sixth working mode).

[0032] Figure 9 This is a schematic diagram of the thermal management system in other embodiments of the present invention (sixth working mode).

[0033] The reference numerals in the detailed embodiments are as follows:

[0034] Thermal management system 100, reversing assembly 10, first reversing valve 11, third reversing valve 12, fifth reversing valve 13, check valve 14, refrigeration circuit 20, first heat exchanger 21, throttling component 22, second heat exchanger 23, compressor 24, first cooling circuit 30, heating assembly 31, water heater 311, warm air core 312, first drive unit 32, second cooling circuit 40, third cooling circuit 50, battery assembly 51, cooling assembly 52, second drive unit 53, fourth cooling circuit 60, electric drive assembly 61, radiator 62, third drive unit 63, first branch circuit 64, bypass valve 70. Detailed Implementation

[0035] The embodiments of the technical solution of this application will now be described in detail with reference to the accompanying drawings. These embodiments are only used to more clearly illustrate the technical solution of this application and are therefore merely examples, and should not be used to limit the scope of protection of this application.

[0036] In related technologies, thermal management systems can manage the thermal performance of a vehicle's air conditioning, power battery, electric drive, etc., to meet the vehicle's operating requirements. However, in low-temperature environments, thermal management systems cannot absorb heat from the outside, causing them to be unable to maintain stable operation and thus affecting the normal operation of the vehicle.

[0037] To address the aforementioned technical problems, the present invention provides a thermal management system 100, which, through the control of the commutation component 10, enables the thermal management system 100 to perform cooling and heating in various environments, improving the system's applicability and integration, and reducing system costs. Additionally, a vehicle is also provided, which includes the aforementioned thermal management system 100.

[0038] like Figure 1 As shown, the thermal management system 100 according to an embodiment of the present invention includes a refrigeration circuit 20, a first cooling circuit 30, a second cooling circuit 40, and a commutation assembly 10. The refrigeration circuit 20 indirectly achieves cooling and heating through the first cooling circuit 30 and the second cooling circuit 40, which can reduce the amount of refrigerant charged, improve the safety of the thermal management system 100, simplify the refrigerant circuit, facilitate further integration of the refrigerant circuit, and reduce system costs.

[0039] The first cooling circuit 30 is thermally connected to the refrigeration circuit 20 and is configured to absorb heat from the refrigeration circuit 20. The second cooling circuit 40 is thermally connected to the refrigeration circuit 20 and is configured to absorb cold energy from the refrigeration circuit 20. The commutation assembly 10 is connected to the first cooling circuit 30 and the second cooling circuit 40 respectively and is configured to control the conduction and disconnection of the first cooling circuit 30 and the second cooling circuit 40. With this configuration, the first cooling circuit 30 and the second cooling circuit 40 are connected through the commutation assembly 10 to realize the vehicle's cooling and heating, improve the system's applicability and integration, and reduce system costs.

[0040] Specifically, a refrigerant flows through the refrigeration circuit 20, and cooling media flow through the first cooling circuit 30 and the second cooling circuit 40, respectively. The refrigerant undergoes a phase change in the refrigeration circuit 20, and its heat is transferred to the cooling media in the first cooling circuit 30 through the thermally conductive connection between the first cooling circuit 30 and the refrigeration circuit 20. Similarly, the cooling capacity of the refrigerant is transferred to the cooling media in the second cooling circuit 40 through the thermally conductive connection between the second cooling circuit 40 and the refrigeration circuit 20.

[0041] More specifically, the first cooling circuit 30 and the second cooling circuit 40 are respectively connected to the reversing assembly 10, and the reversing assembly 10 can control the on / off state of the first cooling circuit 30 and the second cooling circuit 40. Under normal temperature conditions, the reversing assembly 10 can control the first cooling circuit 30 and the second cooling circuit 40 to be disconnected. At this time, the first cooling circuit 30 can be equipped with a heating assembly 31, etc., to use the heat of the cooling medium to heat the passenger compartment and other parts of the vehicle. The second cooling circuit 40 can be equipped with a cooling assembly 52, etc., to use the heat of the cooling medium to cool the passenger compartment and other parts of the vehicle.

[0042] In addition, in low-temperature environments, the refrigeration circuit 20 can transfer heat to the first cooling circuit 30, but cannot absorb heat from the second cooling circuit 40, affecting the normal operation of the refrigeration circuit 20. Based on this, the reversing component 10 can control the first cooling circuit 30 and the second cooling circuit 40 to be connected. At this time, the cooling medium in the first cooling circuit 30 flows to the second cooling circuit 40, and the waste heat in the second cooling circuit 40 is transferred to the refrigeration circuit 20 to ensure the normal operation of the refrigeration circuit 20. It should be noted that under this condition, the second cooling circuit 40 may be equipped with a cooling component 52, but it may not be in operation, or the cooling component 52 may not be provided, in order to achieve the purpose of waste heat recovery.

[0043] Therefore, the thermal management system 100 according to the embodiments of the present invention can realize cooling and heating in various environments through the control of the commutation component 10, thereby improving the applicability and integration of the system and reducing the system cost.

[0044] Furthermore, there are various ways to connect the first cooling circuit 30 and the refrigeration circuit 20 through heat conduction, and there are also various ways to connect the second cooling circuit 40 and the refrigeration circuit 20 through heat conduction. In the first example, the first cooling circuit 30 can be heat-conductingly connected to the heat-releasing pipe in the refrigeration circuit 20 to absorb the heat in the refrigeration circuit 20, and the second cooling circuit 40 can be heat-conductingly connected to the heat-absorbing pipe in the refrigeration circuit 20 to absorb the cold energy in the refrigeration circuit 20. In the second example, the first cooling circuit 30 can be heat-conductingly connected to the condenser to absorb the heat released by the condenser, and the second cooling circuit 40 can be heat-conductingly connected to the evaporator to absorb the heat from the evaporator.

[0045] Based on the second example above, such as Figures 1 to 9 As shown, the refrigeration circuit 20 includes a first heat exchanger 21, a throttling device 22, a second heat exchanger 23, and a compressor 24. The first heat exchanger 21, the throttling device 22, the second heat exchanger 23, and the compressor 24 are connected in sequence to form a circulation loop, and the refrigerant can circulate among the first heat exchanger 21, the throttling device 22, the second heat exchanger 23, and the compressor 24. The first heat exchanger 21 is thermally connected to the first cooling circuit 30, and the first heat exchanger 21 can be configured as a condenser. The second heat exchanger 23 is thermally connected to the second cooling circuit 40, and the second heat exchanger 23 can be configured as an evaporator. In this way, through the thermal connection between the first cooling circuit 30 and the first heat exchanger 21, and the thermal connection between the second cooling circuit 40 and the second heat exchanger 23, heat and cold energy can be absorbed from the refrigeration circuit 20 more effectively, thereby improving the system's working capacity.

[0046] like Figures 2 to 9As shown, in some embodiments of the present invention, the thermal management system 100 further includes a third cooling circuit 50, which is connected to the commutation assembly 10. The commutation assembly 10 is configured to control the conduction and disconnection of any two of the first cooling circuit 30, the second cooling circuit 40, and the third cooling circuit 50. The first cooling circuit 30 includes a heating assembly 31, and the third cooling circuit 50 includes a battery assembly 51. In this way, cooling and heating can be achieved in various environments, and the heat and cold energy can be used to heat up and cool down the components in the circuit to meet the working requirements of the vehicle.

[0047] Specifically, the commutation assembly 10 has a first operating mode, a second operating mode, and a third operating mode; in the first operating mode, the commutation assembly 10 connects the first cooling circuit 30 and the second cooling circuit 40; in the second operating mode, the commutation assembly 10 connects the first cooling circuit 30 and the third cooling circuit 50; in the third operating mode, the commutation assembly 10 connects the second cooling circuit 40 and the third cooling circuit 50.

[0048] The present invention provides the following embodiments to illustrate the various operating modes of the commutation component 10:

[0049] In some embodiments of the present invention, the commutation assembly 10 switches to a first operating mode; at this time, the commutation assembly 10 controls the first cooling circuit 30 and the second cooling circuit 40 to be connected, and the cooling medium flows between the first cooling circuit 30 and the second cooling circuit 40; after the first cooling circuit 30 absorbs heat in the refrigeration circuit 20, it can be used to heat the passenger compartment and heat other components of the vehicle, and the waste heat of the first cooling circuit 30 after the heating operation can flow to the second cooling circuit 40, and the refrigeration circuit 20 can use the second cooling circuit 40 to return the waste heat, which facilitates the normal operation of the thermal management system 100 in a low-temperature environment.

[0050] like Figure 4 and Figure 5 In some embodiments of the present invention, the commutation assembly 10 switches to a second operating mode; at this time, the commutation assembly 10 controls the first cooling circuit 30 and the third cooling circuit 50 to be connected, and the cooling medium flows between the first cooling circuit 30 and the third cooling circuit 50; after the first cooling circuit 30 absorbs heat in the refrigeration circuit 20, it can be used to heat the passenger compartment, and the heat can be transferred from the first cooling circuit 30 to the third cooling circuit 50 with the cooling medium to heat the battery component 51 in the third cooling circuit 50, so as to achieve heating of the passenger compartment and heating of the battery component 51, and ensure the normal operation of the vehicle in a low-temperature environment.

[0051] like Figure 3In some embodiments of the present invention, the commutation assembly 10 switches to a third operating mode; at this time, the commutation assembly 10 controls the second cooling circuit 40 and the third cooling circuit 50 to be connected, and the cooling medium flows between the second cooling circuit 40 and the third cooling circuit 50; after absorbing cold energy from the refrigeration circuit 20, the cooling medium in the second cooling circuit 40 can flow to the third cooling circuit 50 to cool the battery assembly 51 in the third cooling circuit 50, so as to avoid the operating temperature of the battery assembly 51 being too high and to ensure the normal operation of the vehicle.

[0052] Furthermore, such as Figures 2 to 9 As shown, in some embodiments of the present invention, the thermal management system 100 further includes a fourth cooling circuit 60, which is connected to the commutation assembly 10. The commutation assembly 10 is configured to control the conduction and disconnection of any two of the first cooling circuit 30, the second cooling circuit 40, the third cooling circuit 50, and the fourth cooling circuit 60. The fourth cooling circuit 60 includes an electric drive assembly 61 and a radiator 62, which are connected to each other. In this way, cooling and heating can be achieved in various environments, and the components in the heat and cold circuits can be used for heating and cooling to meet the working requirements of the vehicle.

[0053] Specifically, the commutation assembly 10 also has a fourth operating mode, a fifth operating mode and a sixth operating mode; in the fourth operating mode, the commutation assembly 10 connects the first cooling circuit 30 and the fourth cooling circuit 60; in the fifth operating mode, the commutation assembly 10 connects the second cooling circuit 40 and the fourth cooling circuit 60; in the sixth operating mode, the commutation assembly 10 connects the third cooling circuit 50 and the fourth cooling circuit 60.

[0054] In addition, the present invention provides the following embodiments to illustrate the various operating modes of the commutation component 10:

[0055] like Figure 3 In some embodiments of the present invention, the commutation component 10 switches to a fourth operating mode; at this time, the commutation component 10 controls the first cooling circuit 30 and the fourth cooling circuit 60 to be connected, and the cooling medium flows between the first cooling circuit 30 and the fourth cooling circuit 60; after the first cooling circuit 30 absorbs heat in the refrigeration circuit 20, it can first flow to the heat sink 62 of the fourth cooling circuit 60 under the control of the commutation component 10, and the cooling medium is cooled by the heat sink 62. Then the cooling medium can flow to the electric drive component 61, thereby realizing the cooling of the electric drive component 61.

[0056] Understandably, since the operating temperature of the electric drive assembly 61 is relatively high, the cooling medium that absorbs heat in the first cooling circuit 30 can achieve cooling and heat dissipation of the electric drive assembly 61 when its temperature is lower than the operating temperature of the electric drive assembly 61 after being cooled by the radiator 62.

[0057] like Figure 6 and Figure 7 In some embodiments of the present invention, the commutation component 10 switches to a fifth operating mode; at this time, the commutation component 10 controls the second cooling circuit 40 and the fourth cooling circuit 60 to be connected, and the cooling medium flows between the second cooling circuit 40 and the fourth cooling circuit 60; after absorbing cold energy in the refrigeration circuit 20, the second cooling circuit 40 can flow to the fourth cooling circuit 60 to absorb heat in the radiator 62 and the electric drive component 61. The heat dissipation form of the radiator 62 is air cooling, so that the waste heat of the air and the electric drive component 61 can be recovered. Subsequently, the cooling medium can carry the heat back to the second cooling circuit 40, so as to facilitate the transfer of heat to the refrigeration circuit 20, that is, to absorb cold energy from the refrigeration circuit 20, ensuring the normal operation of the thermal management system 100, saving energy, and improving energy utilization.

[0058] like Figure 8 In some embodiments of the present invention, the commutation assembly 10 switches to the sixth operating mode; at this time, the commutation assembly 10 controls the third cooling circuit 50 and the fourth cooling circuit 60 to be connected, and the cooling medium flows between the third cooling circuit 50 and the fourth cooling circuit 60; when the electric drive assembly 61 in the fourth cooling circuit 60 is working, it generates heat, thereby heating the cooling medium in the fourth cooling circuit 60, and then the cooling medium flows to the third cooling circuit 50, and the cooling medium transfers heat to the battery assembly 51. In other words, the battery assembly 51 is heated by the waste heat of the electric drive assembly 61 to ensure the normal operation of the vehicle in a low-temperature environment.

[0059] Of course, such as Figure 9 The cooling medium can also absorb the heat from the battery component 51 in the third cooling circuit 50 and transfer the heat to the radiator 62 in the fourth cooling circuit 60, thereby cooling the battery component 51.

[0060] In some embodiments of the present invention, the thermal management system 100 further includes a fifth cooling circuit, which is connected to a commutation assembly 10. The commutation assembly 10 is configured to control the conduction and disconnection of any two of the first cooling circuit 30, the second cooling circuit 40, and the fifth cooling circuit. The first cooling circuit 30 includes a heating assembly 31, and the fifth cooling circuit includes an electric drive assembly 61 and a radiator 62, with the electric drive assembly 61 connected to the radiator 62. In this way, cooling and heating can be achieved in various environments, and the components in the heat and cold circuits can be used for heating and cooling to meet the working requirements of the vehicle.

[0061] The fifth cooling circuit can be configured as the fourth cooling circuit 60 described above. It is understood that the implementation of the fifth cooling circuit refers to the implementation of the fourth cooling circuit 60 described above, and will not be repeated here.

[0062] In some embodiments of the present invention, the reversing assembly 10 includes a first reversing valve 11 and a second reversing valve.

[0063] The first reversing valve 11 connects the first cooling circuit 30, the second cooling circuit 40, the third cooling circuit 50, and the fourth cooling circuit 60, and is used to control the opening and closing of the first cooling circuit 30 and the second cooling circuit 40, the first cooling circuit 30 and the fourth cooling circuit 60, the second cooling circuit 40 and the third cooling circuit 50, the second cooling circuit 40 and the fourth cooling circuit 60, and the third cooling circuit 50 and the fourth cooling circuit 60; the second reversing valve connects the first cooling circuit 30 and the third cooling circuit 50, and is used to control the opening and closing of the first cooling circuit 30 and the third cooling circuit 50; in this way, the flow distribution of the cooling medium can be easily achieved through the first reversing valve and the second reversing valve, and the cost of the thermal management system 100 is reduced.

[0064] In light of the foregoing, it can be understood that the reversing assembly 10 can control the opening and closing of any two of the first cooling circuit 30, the second cooling circuit 40, the third cooling circuit 50, and the fourth cooling circuit 60. The reversing assembly 10 includes a first reversing valve 11 and a second reversing valve. The second reversing valve can control the opening and closing of the first cooling circuit 30 and the second cooling circuit 40. The opening of any two of the remaining cooling circuits can be controlled by the first reversing valve 11. In this way, the control accuracy of the cooling medium flow distribution can be reduced, thereby reducing the cost of the thermal management system 100.

[0065] Conversely, if the commutation assembly 10 controls any two of the cooling circuits, due to the large number of flow channels inside the commutation assembly 10, the control accuracy requirement is high and the cost is also high when it is necessary to control the distribution of cooling medium flow.

[0066] Of course, depending on the actual situation, the second reversing valve can control the conduction of the first cooling circuit 30 and the second cooling circuit 40, or the first cooling circuit 30 and the fourth cooling circuit 60, etc. The conduction of any two of the remaining cooling circuits can be controlled by the first reversing valve 11.

[0067] In the above embodiments, the second reversing valve can be configured as a four-way valve to connect the first cooling circuit 30 and the third cooling circuit 50 respectively; of course, this is not a limitation on the scope of protection of the present invention.

[0068] like Figures 2 to 9 As shown, in some embodiments of the present invention, the reversing assembly 10 includes a first reversing valve 11, a third reversing valve 12, and a check valve 14.

[0069] The first directional valve 11 connects the first cooling circuit 30, the second cooling circuit 40, the third cooling circuit 50, and the fourth cooling circuit 60, and is used to control the conduction and disconnection of the first cooling circuit 30 and the second cooling circuit 40, the first cooling circuit 30 and the fourth cooling circuit 60, the second cooling circuit 40 and the third cooling circuit 50, the second cooling circuit 40 and the fourth cooling circuit 60, and the third cooling circuit 50 and the fourth cooling circuit 60. The third directional valve 12 has a first end, a second end, and a third end. The first end and the second end are connected in series with the first cooling circuit 30, and the second end is connected with the third cooling circuit 50. The check valve 14 connects the first cooling circuit 30 and the third cooling circuit 50. In this way, the flow distribution of the cooling medium can be easily achieved through the first directional valve, the second directional valve, and the check valve, and the cost of the thermal management system 100 is reduced.

[0070] It is understood that in this embodiment, the third directional valve 12 is configured as a three-way valve. The cooperation of the third directional valve 12 and the one-way valve 14 enables the connection and disconnection of the first cooling circuit 30 and the third cooling circuit 50, and also enables the flow distribution of the cooling medium in the first cooling circuit 30 and the third cooling circuit 50, thereby improving the performance of the thermal management system 100. Furthermore, the three-way valve is a general-purpose component, with large-scale products available on the market, resulting in lower costs and further reducing the cost of the thermal management system 100.

[0071] like Figures 2 to 9 As shown, in some embodiments of the present invention, the first cooling circuit 30 further includes a first driving component 32, and the refrigeration circuit 20 includes a first heat exchanger 21. The first driving component 32, the heating component 31, the first heat exchanger 21 and the reversing component 10 are connected in sequence to form a circuit. The first heat exchanger 21 is used to heat the cooling medium. In this way, the first cooling circuit 30 can provide heating to the passenger compartment and heat other parts of the vehicle to meet the user's needs.

[0072] For example, the heating component 31 includes a water heater 311 and a warm air core 312. The cooling medium circulates along the first drive member 32, the water heater 311, the warm air core 312, the first heat exchanger 21, and the reversing component 10. The cooling medium is driven to flow by the first drive member 32 and heated by the water heater 311. Then, the cooling medium releases heat in the warm air core 312 to achieve heating of the passenger compartment by the first cooling circuit 30. Then, it absorbs the heat generated by the phase change of the refrigerant in the first heat exchanger 21, and the cycle repeats.

[0073] like Figures 2 to 9As shown, in some embodiments of the present invention, the third cooling circuit 50 further includes a cooling component 52 and a second drive component 53, wherein the second drive component 53, the cooling component 52, the battery component 51 and the commutation component 10 are connected in sequence to form a circuit; thus, the third cooling circuit 50 can supply cooling to the passenger compartment and cool other components of the vehicle to meet the user's needs.

[0074] For example, in conjunction with the third operating mode of the commutation assembly 10 described above, the cooling assembly 52 includes a cold air core, and the cooling medium circulates along the second drive member 53, the cold air core, and the battery assembly 51. The cooling medium is driven to flow by the second drive member 53, and the cooling medium can transfer the cold energy in the second cooling circuit 40 to the cold air core and the battery assembly 51, so as to realize the cooling of the passenger compartment and the cooling of the battery assembly 51 by the third cooling circuit 50.

[0075] In some embodiments of the present invention, the reversing assembly 10 includes a fourth reversing valve, which is connected to the cooling assembly 52, the battery assembly 51, and the second cooling circuit 40. When the second cooling circuit 40 is connected to the third cooling circuit 50, the fourth reversing valve is configured to selectively control the flow of cooling medium to the cooling assembly 52 and the battery assembly 51. For example, the fourth reversing valve can control the low-temperature cooling medium in the second cooling circuit 40 to flow solely to the cooling assembly 52, facilitating the cooling of the passenger compartment by the cooling assembly 52. ​​Alternatively, the fourth reversing valve can control the low-temperature cooling medium in the second cooling circuit 40 to flow solely to the battery assembly 51, facilitating the cooling of the battery assembly 51. Furthermore, the fourth reversing valve can control the low-temperature cooling medium in the second cooling circuit 40 to flow to both the cooling assembly 52 and the battery assembly 51, enabling both passenger compartment cooling and battery assembly 51 cooling. This enriches the functionality of the thermal management system 100 and meets the user's needs.

[0076] like Figures 2 to 9 As shown, in some other embodiments of the present invention, the reversing assembly 10 includes a fifth reversing valve 13, which has a fourth end, a fifth end, and a sixth end. The fourth end is connected to the cooling assembly 52, the fifth end is connected to the inlet of the battery assembly 51, and the sixth end is connected to the outlet of the battery assembly 51. The fifth reversing valve 13 is configured to selectively control the fourth end to be connected to the fifth and sixth ends. In this way, the functions of the thermal management system 100 can be enriched to meet the user's needs.

[0077] Specifically, when the second cooling circuit 40 and the third cooling circuit 50 are connected, the low-temperature cooling medium can flow from the second cooling circuit 40 sequentially through the second driving component 53, the cooling assembly 52 and the battery assembly 51.

[0078] Cooling of the crew cabin and battery assembly 51 can be achieved individually or in combination as needed.

[0079] For example, the system can simultaneously cool the passenger compartment and cool the battery assembly 51. The fourth and fifth ends of the fifth reversing valve 13 are connected, and the cooling medium can transfer cooling energy to the cooling assembly 52 and the battery assembly 51 respectively.

[0080] For example, the battery assembly 51 can be cooled independently. In this case, the fourth and fifth ends of the fifth reversing valve 13 are connected, the cooling assembly 52 does not work, that is, it does not receive cooling energy, and the cooling medium separately transfers cooling energy to the battery assembly 51.

[0081] For example, it can achieve independent cooling of the crew compartment, wherein the fourth end of the fifth reversing valve 13 is connected to the sixth end, and the low temperature cooling medium flows through the cooling component 52 without flowing through the battery component 51, and transfers the cooling capacity to the cooling component 52.

[0082] like Figures 2 to 9 As shown, in some embodiments of the present invention, the fifth cooling circuit further includes a third driving member 63, and the heat sink 62, the third driving member 63, the electric drive assembly 61 and the commutation assembly 10 are connected to form a circuit; thus, the electric drive assembly 61 can be cooled through the fourth cooling circuit 60.

[0083] For example, in conjunction with the foregoing, the fifth cooling circuit can be configured as the fourth cooling circuit 60. When the fourth cooling circuit 60 is not connected to other cooling circuits, the cooling medium can circulate along the third drive member 63, the electric drive assembly 61, and the heat sink 62. The cooling medium is driven to flow by the third drive member 63 and absorbs heat when flowing through the electric drive assembly 61, and then transfers the heat to the heat sink 62 to achieve heat dissipation of the electric drive assembly 61. In addition, when the fourth cooling circuit 60 is connected to other cooling circuits, the fourth to sixth operating modes of the aforementioned commutation assembly 10 can be referred to, which will not be repeated here.

[0084] Furthermore, such as Figures 2 to 9 As shown, in some embodiments of the present invention, the fifth cooling circuit further includes a first branch 64, one end of which is connected to the inlet of the radiator 62, and the other end of which is connected to the outlet of the radiator 62; thus, on the basis of achieving heating and cooling of the battery assembly 51, fluid resistance can be reduced and the stability of the thermal management system 100 operation can be improved.

[0085] For example, in conjunction with the foregoing, the fifth cooling circuit can be configured as the fourth cooling circuit 60. For ease of understanding, the description is based on the sixth operating mode of the commutation component 10 described above. When the commutation component 10 switches to the sixth operating mode, it controls the third cooling circuit 50 to be connected to a portion of the fourth cooling circuit 60. In some examples, the cooling medium can flow from the third cooling circuit 50 sequentially through the first branch 64, the third drive unit 63, and the electric drive component 61, and finally return to the third cooling circuit 50. During this process, the cooling medium can use the waste heat generated by the operation of the electric drive component 61 to heat up the battery component 51, ensuring the normal operation of the battery component 51 in a low-temperature environment.

[0086] In other examples, the cooling medium can circulate between the battery assembly 51 in the third cooling circuit 50, the heat sink 62 in the fourth cooling circuit 60, and the first branch 64. In this way, the cooling medium can absorb the heat of the battery assembly 51 and transfer the heat to the heat sink 62, thereby achieving heat dissipation of the battery assembly 51 and improving the working stability of the battery assembly 51.

[0087] Based on the aforementioned example, the first branch 64 can be used to heat up and cool down the battery assembly 51. Without the first branch 64, when the aforementioned functions are achieved, the cooling medium would need to flow through the radiator 62 and the electric drive assembly 61, resulting in increased fluid resistance and wasted energy.

[0088] like Figures 2 to 9 As shown, in some embodiments of the present invention, the refrigeration circuit 20 further includes a bypass valve 70, which has an inlet end and an outlet end. The inlet end is connected to the inlet of the compressor 24, and the outlet end is connected to the outlet of the compressor 24. This configuration ensures the normal operation of the thermal management system 100 in a low-temperature environment.

[0089] For example, the thermal management system 100 also includes a fourth reversing valve and a fifth reversing valve, which are each configured as three-way valves. The fourth reversing valve is connected to the inlet of the second heat exchanger 23 and the bypass valve 70 and the inlet of the compressor 24, respectively. The fifth reversing valve is connected to the outlet of the first heat exchanger 21 and the bypass valve 70 and the outlet of the compressor 24, respectively. It is understood that when the ambient temperature is low, the second heat exchanger 23 is unlikely to absorb heat from the second cooling circuit 40 and the external environment. At this time, under the action of the fourth and fifth reversing valves, the refrigerant flows between the compressor 24 and the bypass valve 70, thereby heating the refrigerant. In this way, the refrigerant can absorb heat in the compressor 24 and release heat in the first heat exchanger 21, ensuring the normal operation of the refrigeration circuit 20.

[0090] According to an embodiment of the present invention, the vehicle includes the thermal management system 100 described above. By applying the aforementioned thermal management system 100, the vehicle integration can be improved and the vehicle cost can be reduced.

[0091] In some specific examples of the present invention, such as Figure 2 As shown, the automotive thermal management secondary loop system (i.e., thermal management system 100) provided in this embodiment of the invention includes a refrigerant loop and a coolant loop. The refrigerant loop includes a compressor 24, a water-cooled condenser (i.e., a first heat exchanger 21), an intermediate heat exchanger (i.e., a second heat exchanger 23), a receiver-and-discharge tank, an electronic expansion valve one (i.e., a throttling component 22), and an electronic expansion valve two (i.e., a bypass valve 70). The components are connected by refrigerant lines or refrigerant manifolds, and pressure and temperature sensors can be added as needed.

[0092] The coolant circuit includes a first cooling circuit 30, a second cooling circuit 40, a third cooling circuit 50, and a fourth cooling circuit 60. The first cooling circuit 30 includes a nine-way valve (i.e., the first reversing valve 11), a heater pump (i.e., the first drive unit 32), a water heater 311, a heater core 312, a three-way valve (i.e., the second reversing valve), a water-cooled condenser, and a check valve 14. All components are connected via coolant piping or a coolant manifold. The second cooling circuit 40 includes a nine-way valve and an intermediate heat exchanger, among other components. All components are connected via coolant piping or a coolant manifold, and temperature sensors can be added as needed. The third cooling circuit 50 includes a nine-way valve, a battery water pump (i.e., the second drive unit 53), a heater core, and a three-way valve (i.e., the fifth reversing valve 13). All components are connected via coolant piping or a coolant manifold. The fourth cooling circuit 60 includes a nine-way valve, a radiator 62, an electric water pump (i.e., the third drive unit 63), and an electric drive assembly 61, with each component connected by a coolant pipeline or a coolant manifold.

[0093] like Figure 3 The diagram shows the first operating state of some embodiments of the present invention. In the refrigerant circuit, electronic expansion valve one is opened, electronic expansion valve two is closed, compressor 24 operates, and the circuit continues to operate. In the coolant circuit, the nine-way valve is in mode A. In the first cooling circuit 30, the heater pump is operated, the first and second ports of the three-way valve one are connected, and the third port is closed. In the second cooling circuit 40, the battery water pump is operated, and the first port of the three-way valve two is simultaneously connected to the second and third ports. In the third cooling circuit 50, the electric drive water pump is operated. The above states can realize battery cooling, passenger compartment cooling, and electric drive cooling functions. The battery cooling mode or the passenger compartment cooling mode can be realized by controlling the opening and closing of the second and third ports of the three-way valve two.

[0094] like Figure 4The diagram shows the second operating state of some embodiments of the present invention. In the refrigerant circuit, the electronic expansion valve 1 is opened, the compressor 24 operates, and the circuit continues to operate. In the coolant circuit, the nine-way valve is in mode B. In the first cooling circuit 30, the heater pump is operated, and the first port of the three-way valve 1 is simultaneously connected to the second and third ports. In the second cooling circuit 40, the battery water pump is operated, and the first port of the three-way valve 2 is connected to the second port. In the third cooling circuit 50, the electric water pump is operated. The above states can realize the functions of crew cabin heating, battery heating, air source and motor waste heat recovery. The battery heating independent mode or the crew cabin heating independent mode can be realized by controlling the opening and closing of the second and third ports of the three-way valve. The hot air bypass function can be realized by opening and closing the electronic expansion valve 2.

[0095] like Figure 5 The diagram shows the third operating state of some embodiments of the present invention. In the refrigerant circuit, the electronic expansion valve 1 is opened, the compressor 24 operates, and the circuit continues to operate. In the coolant circuit, the nine-way valve is in mode C. In the first cooling circuit 30, the heater pump is operated, and the first port of the three-way valve 1 is simultaneously connected to the second and third ports. In the second cooling circuit 40, the battery water pump is operated, and the first port of the three-way valve 2 is connected to the second port. In the third cooling circuit 50, the electric water pump is operated. The above states can realize the functions of crew cabin heating, battery heating, and motor waste heat recovery. The battery heating mode or the crew cabin heating mode can be realized by controlling the opening and closing of the second and third ports of the three-way valve 1. The hot air bypass function can be realized by controlling the opening and closing of the electronic expansion valve 2.

[0096] like Figure 6 The diagram shows the fourth operating state of some embodiments of the present invention. In the refrigerant circuit, the electronic expansion valve 1 is opened, the compressor 24 operates, and the circuit continues to operate. In the coolant circuit, the nine-way valve is in mode D. In the first cooling circuit 30, the heater pump is operated, and the first and second ports of the three-way valve 1 are connected. In the second cooling circuit 40, the battery water pump is operated, and the first and second ports of the three-way valve 2 are connected. In the third cooling circuit 50, the electric water pump is operated. The above states can realize the functions of battery waste heat recovery and crew cabin heating. The hot air bypass function can be realized by opening and closing the electronic expansion valve 2.

[0097] like Figure 7The diagram shows the fifth operating state of some embodiments of the present invention. In the refrigerant circuit, the electronic expansion valve 1 is opened, the compressor 24 operates, and the circuit continues to operate. In the coolant circuit, the nine-way valve is in mode E. In the first cooling circuit 30, the heater pump is operated, and the first and second ports of the three-way valve 1 are connected. In the second cooling circuit 40, the battery water pump is operated, and the first and second ports of the three-way valve 2 are connected. In the third cooling circuit 50, the electric water pump is operated. The above states can realize the functions of battery waste heat recovery and crew cabin heating. The hot air bypass function can be realized by opening and closing the electronic expansion valve 2.

[0098] like Figure 8 The diagram shows the sixth operating state of some embodiments of the present invention. In the refrigerant circuit, electronic expansion valve one is closed, electronic expansion valve two is closed, and compressor 24 does not operate. In the coolant circuit, the nine-way valve is in mode F. In the first cooling circuit 30, the heater pump is not operated. In the second cooling circuit 40, the battery water pump is operated, and the first port of the three-way valve two is connected to the second port. In the third cooling circuit 50, the electric drive water pump is operated. The above states enable the function of heating the battery with waste heat from the electric drive.

[0099] like Figure 9 The diagram shows the seventh operating state of some embodiments of the present invention. In the refrigerant circuit, electronic expansion valve one is closed, electronic expansion valve two is closed, and compressor 24 is not running. In the coolant circuit, the nine-way valve is in mode G. In the first cooling circuit 30, the heater pump is not running. In the second cooling circuit 40, the battery water pump is running, and the first port of the three-way valve two is connected to the second port. In the third cooling circuit 50, the electric water pump is not running. The above states enable the battery radiator 62 to perform its cooling function.

[0100] Furthermore, it is understandable that, according to relevant technologies, R290, due to its excellent high and low temperature performance and low cost advantages, is a potential next-generation refrigerant. However, as an A3 class refrigerant, it is flammable and explosive, posing safety risks. The thermal management system 100 in this embodiment of the invention includes a refrigeration circuit 20, a first cooling circuit 30, and a second cooling circuit 40. Through a dual-indirect architecture design, the refrigerant circuit is simplified. The refrigerant circuit exchanges cooling and heating energy to the coolant via a water-cooled condenser and an intermediate heat exchanger, and then transfers the heat to the passenger compartment or battery, electric drive, and other systems via the coolant, achieving the system's cooling and heating functions. The refrigerant does not enter the passenger compartment, and the charge amount is significantly reduced, improving the safety of R290 refrigerant application. The simplified refrigerant circuit facilitates the integration of all refrigerant-side components, further reducing the refrigerant charge and lowering system costs.

[0101] In this application, the terms "upper," "lower," "left," "right," "front," "rear," "top," "bottom," "inner," "outer," "middle," "vertical," "horizontal," "lateral," and "longitudinal" indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. These terms are primarily for the purpose of better describing this application and its embodiments, and are not intended to limit the indicated device, element, or component to having a specific orientation, or to be constructed and operated in a specific orientation.

[0102] Furthermore, in addition to indicating location or positional relationship, some of the aforementioned terms may also have other meanings. For example, the term "above" may also be used in some cases to indicate a certain dependency or connection relationship. Those skilled in the art can understand the specific meaning of these terms in this application based on the specific circumstances.

[0103] Furthermore, the terms "installation," "setup," "equipped with," "connection," and "linked" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral structure; they can refer to a mechanical connection or a point connection; they can refer to a direct connection or an indirect connection through an intermediate medium, or an internal connection between two devices, components, or parts. Those skilled in the art can understand the specific meaning of these terms in this application based on the specific circumstances.

[0104] Furthermore, the terms "first," "second," etc., are primarily used to distinguish different devices, elements, or components (which may be the same or different in specific type and construction), and are not intended to indicate or imply the relative importance or quantity of the indicated devices, elements, or components. Unless otherwise stated, "a plurality of" means two or more.

[0105] In all embodiments of this application, "large" and "small" are relative terms, "more" and "less" are relative terms, and "upper" and "lower" are relative terms. The embodiments of this application will not elaborate further on the expression of such relative terms.

[0106] It should be understood that the phrases "in this embodiment," "in this application embodiment," or "as an optional implementation" throughout the specification mean that a specific feature, structure, or characteristic related to an embodiment is included in at least one embodiment of this application. Therefore, the phrases "in this embodiment," "in this application embodiment," or "as an optional implementation" appearing throughout the specification do not necessarily refer to the same embodiment. Furthermore, these specific features, structures, or characteristics can be combined in any suitable manner in one or more embodiments. Those skilled in the art should also understand that the embodiments described in the specification are all optional embodiments, and the actions and modules involved are not necessarily essential to this application.

[0107] In the various embodiments of this application, it should be understood that the sequence number of each process does not necessarily imply the order of execution. The execution order of each process should be determined by its function and internal logic, and should not constitute any limitation on the implementation process of the embodiments of this application.

[0108] The above description is merely a specific embodiment of this application, but the scope of protection of this application is not limited thereto. Any variations or substitutions that can be easily conceived by those skilled in the art within the scope of the technology disclosed in this application should be included within the scope of protection of this application. Therefore, the scope of protection of this application should be determined by the scope of protection of the claims.

Claims

1. A thermal management system, characterized in that, include: Refrigeration circuit (20); A first cooling circuit (30) is thermally connected to the refrigeration circuit (20) and configured to absorb heat from the refrigeration circuit (20). The first cooling circuit (30) includes a heating component (31), which includes a water heater (311) and a warm air core (312). A second cooling circuit (40) is thermally connected to the refrigeration circuit (20) and configured to absorb cold energy from the refrigeration circuit (20); A commutation assembly (10) is connected to the first cooling circuit (30) and the second cooling circuit (40) respectively, and is configured to control the first cooling circuit (30) and the second cooling circuit (40) to be turned on and off. The commutation assembly (10) controls the first cooling circuit (30) and the second cooling circuit (40) to be turned on in a first working mode. The refrigeration circuit (20) includes a first heat exchanger (21), a throttling device (22), a second heat exchanger (23), and a compressor (24) connected in sequence. The first heat exchanger (21) is thermally connected to the first cooling circuit (30), and the second heat exchanger (23) is thermally connected to the second cooling circuit (40). The thermal management system further includes a third cooling circuit (50) connected to the commutation assembly (10). The commutation assembly (10) is configured to control the conduction and disconnection of any two of the first cooling circuit (30), the second cooling circuit (40), and the third cooling circuit (50). The third cooling circuit (50) includes a battery assembly (51), a cooling assembly (52), and a second drive unit (53). The second drive unit (53), the cooling assembly (52), the battery assembly (51), and the commutation assembly (10) are connected in sequence to form a circuit.

2. The thermal management system according to claim 1, characterized in that, It also includes a fourth cooling circuit (60) connected to the commutation assembly (10), the commutation assembly (10) being configured to control the opening and closing of any two of the first cooling circuit (30), the second cooling circuit (40), the third cooling circuit (50) and the fourth cooling circuit (60); The fourth cooling circuit (60) includes an electric drive assembly (61) and a heat sink (62), wherein the heat sink (62) is connected to the electric drive assembly (61).

3. The thermal management system according to claim 1, characterized in that, It also includes a fifth cooling circuit, which is connected to the commutation assembly (10), and the commutation assembly (10) is configured to control the connection and disconnection of any two of the first cooling circuit (30), the second cooling circuit (40) and the fifth cooling circuit; The first cooling circuit (30) includes a heating component (31), and the fifth cooling circuit includes an electric drive component (61) and a radiator (62), wherein the radiator (62) is connected to the electric drive component (61).

4. The thermal management system according to claim 2, characterized in that, The commutation assembly (10) includes: A first reversing valve (11) is connected to the first cooling circuit (30), the second cooling circuit (40), the third cooling circuit (50), and the fourth cooling circuit (60), and is used to control the opening and closing of the first cooling circuit (30) and the second cooling circuit (40), the first cooling circuit (30) and the fourth cooling circuit (60), the second cooling circuit (40) and the third cooling circuit (50), the second cooling circuit (40) and the fourth cooling circuit (60), and the third cooling circuit (50) and the fourth cooling circuit (60); The second reversing valve connects the first cooling circuit (30) and the third cooling circuit (50) and is used to control the opening and closing of the first cooling circuit (30) and the third cooling circuit (50).

5. The thermal management system according to claim 2, characterized in that, The commutation assembly (10) includes: A first reversing valve (11) is connected to the first cooling circuit (30), the second cooling circuit (40), the third cooling circuit (50), and the fourth cooling circuit (60), and is used to control the opening and closing of the first cooling circuit (30) and the second cooling circuit (40), the first cooling circuit (30) and the fourth cooling circuit (60), the second cooling circuit (40) and the third cooling circuit (50), the second cooling circuit (40) and the fourth cooling circuit (60), and the third cooling circuit (50) and the fourth cooling circuit (60); The third reversing valve (12) has a first end, a second end and a third end, the first end and the second end are connected in series to the first cooling circuit (30), and the second end is connected to the third cooling circuit (50); A one-way valve (14) is provided, which connects the first cooling circuit (30) and the third cooling circuit (50).

6. The thermal management system according to claim 1, characterized in that, The first cooling circuit (30) further includes a first driving element (32), and the refrigeration circuit (20) includes a first heat exchanger (21). The first driving element (32), the heating component (31), the first heat exchanger (21) and the reversing component (10) are connected in sequence to form a circuit. The first heat exchanger (21) is used to heat the cooling medium.

7. The thermal management system according to claim 1, characterized in that, The reversing assembly (10) includes a fourth reversing valve, which is connected to the cooling assembly (52), the battery assembly (51), and the second cooling circuit (40). When the second cooling circuit (40) is connected to the third cooling circuit (50), the fourth reversing valve is configured to selectively control the flow of cooling medium to the cooling assembly (52) and the battery assembly (51). And / or, the reversing assembly (10) includes a fifth reversing valve (13) having a fourth end, a fifth end and a sixth end, the fourth end being connected to the cooling assembly (52), the fifth end being connected to the inlet of the battery assembly (51), and the sixth end being connected to the outlet of the battery assembly (51), the fifth reversing valve (13) being configured to selectively control the fourth end to be connected to the fifth end and the sixth end.

8. The thermal management system according to claim 3, characterized in that, The fifth cooling circuit also includes a third drive unit (63), and the radiator (62), the third drive unit (63), the electric drive assembly (61) and the commutation assembly (10) are connected to form a circuit.

9. The thermal management system according to claim 8, characterized in that, The fifth cooling circuit also includes a first branch (64), one end of which is connected to the inlet of the radiator (62), and the other end of which is connected to the outlet of the radiator (62).

10. The thermal management system according to claim 1, characterized in that, The refrigeration circuit (20) also includes a bypass valve (70), which has an inlet end and an outlet end. The inlet end is connected to the inlet of the compressor (24), and the outlet end is connected to the outlet of the compressor (24).

11. A vehicle, characterized in that, Includes the thermal management system according to any one of claims 1-10.

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