Front-end heat exchange module of thermal management system, thermal management system and vehicle

Abstract

The application provides a front-end heat exchange module of a thermal management system, the thermal management system and a vehicle, and relates to the technical field of vehicles.The front-end heat exchange module connects a middle cooling branch and an electric drive electric control branch in parallel on a first heat dissipation branch, uses the first heat dissipation branch to dissipate heat for the middle cooling branch and simultaneously performs first-stage heat dissipation on the electric drive electric control branch; a first three-way proportional valve is used to adjust the flow of cooling liquid flowing into the middle cooling branch and a second heat dissipation branch, the cooling effect of the middle cooling branch is further adjusted by controlling the flow, and the cooling liquid flowing into the electric drive electric control branch is secondarily cooled through the second heat dissipation branch. In this way, the electric drive electric control loop is secondarily cooled, the flow and heat exchange capacity of each branch are accurately distributed, the cooling requirements of different components of the middle cooling branch and the electric drive electric control branch are accurately met, the overcooling and overheating of the components are avoided, the energy consumed for cooling and heat exchange of each branch is reduced, the heat exchange efficiency is improved, and the thermal management performance of the vehicle is improved.

Description

Technical Field

[0001] This application relates to the field of vehicle technology, and in particular to a front-end heat exchange module of a thermal management system, a thermal management system, and a vehicle. Background Technology

[0002] With the continuous development of hybrid and electrified vehicle designs, the heat exchange requirements of thermal management systems are constantly increasing, while the air intake of front-end heat exchange modules is constantly decreasing, posing a huge challenge to achieving the performance standards of thermal management systems.

[0003] Different components in a thermal management system have different optimal operating temperature ranges. For example, the intercooling system requires an inlet water temperature of no more than 72°C, while electric drive, electronic control, and other new energy components require an inlet water temperature of no more than 65°C.

[0004] In existing technologies, the intercooling system and the electric drive and control cooling system are connected in series or are independent of each other. They cannot accurately allocate flow rate and heat dissipation capacity according to the temperature requirements of different components, resulting in low heat exchange efficiency of the thermal management system and affecting its performance. Summary of the Invention

[0005] Therefore, it is necessary to address the aforementioned technical issues by providing a front-end heat exchange module of a thermal management system, a thermal management system, and a vehicle, so as to accurately meet the heat exchange requirements of different heat dissipation components and improve the overall vehicle heat exchange efficiency.

[0006] A front-end heat exchange module for a thermal management system includes: a first heat dissipation branch, a second heat dissipation branch, and a first three-way proportional valve; the inlet of the first heat dissipation branch is connected to the outlet of an electric drive / control branch and the outlet of an intercooling branch in the thermal management system; the outlet of the first heat dissipation branch is connected to a first end of the first three-way proportional valve, the second end of the first three-way proportional valve is connected to the inlet of the intercooling branch, and the third end of the first three-way proportional valve is connected to the inlet of the second heat dissipation branch; the outlet of the second heat dissipation branch is connected to the inlet of the electric drive / control branch.

[0007] In this embodiment, the front-end heat exchange module further includes a first radiator connected in series in the engine cooling circuit and a first cooling fan that is paired with the first radiator. The first cooling fan is disposed facing the first radiator. The first heat dissipation branch includes a second radiator and a first cooling component. The second radiator is disposed facing the first cooling fan so that the second radiator is paired with the first cooling fan for heat dissipation. The inlet of the second radiator is connected to the inlet of the first heat dissipation branch, and the outlet of the second radiator is connected to the outlet of the first heat dissipation branch. The first cooling component is disposed between the inlet of the second radiator and the inlet of the first heat dissipation branch. The second cooling component is used to reduce the temperature of the coolant flowing into the second radiator.

[0008] In this embodiment, the first heat dissipation branch further includes a second three-way proportional valve; the first end of the second three-way proportional valve is connected to the inlet of the first heat dissipation branch; the second end of the second three-way proportional valve is connected to the inlet of the second radiator; and the first cooling component is disposed between the inlet of the second radiator and the third end of the second three-way proportional valve.

[0009] In this embodiment of the application, the first cooling component includes a third heat sink and / or a second cooling fan, and the position of the first cooling component is offset from the position in which the first cooling fan faces.

[0010] In this embodiment, the front-end heat exchange module further includes a first radiator connected in series in the engine cooling circuit and a first cooling fan that is paired with the first radiator. The first cooling fan is disposed facing the first radiator. The second heat dissipation branch includes a fourth radiator and a second cooling assembly. The fourth radiator is disposed facing the first cooling fan so that the fourth radiator is paired with the first cooling fan for heat dissipation. The inlet of the fourth radiator is connected to the inlet of the second heat dissipation branch, and the outlet of the fourth radiator is connected to the outlet of the second heat dissipation branch. The second cooling assembly is disposed between the inlet of the fourth radiator and the inlet of the second heat dissipation branch. The second cooling assembly is used to reduce the temperature of the coolant flowing into the fourth radiator.

[0011] In this embodiment, the second heat dissipation branch further includes a third three-way proportional valve; the first end of the third three-way proportional valve is connected to the inlet of the second heat dissipation branch; the second end of the third three-way proportional valve is connected to the inlet of the fourth radiator; the second cooling assembly is disposed between the inlet of the second heat dissipation branch and the third end of the third three-way proportional valve.

[0012] In some embodiments, the second cooling component includes a fifth heat sink and / or a third cooling fan, and the second cooling component is positioned offset from the position in which the first cooling fan faces.

[0013] In some embodiments, the front-end heat exchange module further includes an air-cooled condenser; the air-cooled condenser is disposed on the plane of the fourth radiator, the air-cooled condenser faces the first cooling fan, and both the air-cooled condenser and the fourth radiator are used to dissipate heat with the first cooling fan; the air-cooled condenser is connected in series in the refrigerant circuit of the thermal management system, and the air-cooled condenser is used to dissipate the battery heat and / or crew compartment heat absorbed by the refrigerant circuit.

[0014] A thermal management system includes: a front-end heat exchange module, an electric drive and control branch, and an intercooling branch as described in any of the above embodiments; the inlet of a first heat dissipation branch in the front-end heat exchange module is connected to the outlet of the electric drive and control branch and the outlet of the intercooling branch, respectively; the outlet of the first heat dissipation branch passes through a first end and a second end of a first three-way proportional valve in the front-end heat exchange module and is connected to the inlet of the intercooling branch; the outlet of a second heat dissipation branch in the front-end heat exchange module is connected to the inlet of the electric drive and control branch; wherein the inlet of the second heat dissipation branch is connected to the third end of the first three-way proportional valve.

[0015] A vehicle includes a thermal management system as described in any of the above embodiments.

[0016] In summary, the front-end heat exchange module, thermal management system, and vehicle of the thermal management system proposed in this application connect the intercooling branch and the electric drive and control branch in parallel on the first heat dissipation branch. The first heat dissipation branch provides primary cooling for the intercooling branch and simultaneously provides primary cooling for the electric drive and control branch. A first three-way proportional valve adjusts the coolant flow rate into the intercooling branch and the second heat dissipation branch, further adjusting the cooling effect of the intercooling branch by controlling the flow rate. The second heat dissipation branch then provides secondary cooling for the coolant flowing into the electric drive and control branch. This achieves secondary cooling of the electric drive and control circuit, precise allocation of flow rate and heat exchange capacity for each branch, and accurately meets the heat exchange needs of different components in the intercooling branch and the electric drive and control branch. This avoids overcooling and overheating of components, reduces the energy consumed for cooling and heat exchange in each branch, improves heat exchange efficiency, and enhances the overall vehicle thermal management performance. Attached Figure Description

[0017] To more clearly illustrate the technical solutions of the embodiments of the present invention, the drawings used in the description of the embodiments of the present invention will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present invention. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0018] Figure 1 This is a schematic diagram of the structure of a thermal management system according to an exemplary embodiment of this application;

[0019] Figure 2 This is a schematic diagram of the structure of a thermal management system according to another exemplary embodiment of this application;

[0020] Figure 3 This is a schematic diagram of the structure of a thermal management system according to another exemplary embodiment of this application;

[0021] Figure 4 This is a schematic diagram of the structure of a thermal management system according to an exemplary embodiment of this application;

[0022] Figure 5 This is a schematic block diagram of a vehicle according to an exemplary embodiment of the present application. Detailed Implementation

[0023] The technical solutions of the embodiments of this application will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of this application, not all embodiments. The embodiments described with reference to the accompanying drawings are exemplary and intended to explain this application, and should not be construed as limiting this application. All other embodiments obtained by those skilled in the art based on the embodiments of this application without creative effort are within the scope of protection of this application.

[0024] It should be understood that, when used in the specification and appended claims of this invention, the term "comprising" indicates the presence of the described feature, integral, step, or operation, but does not exclude the presence or addition of one or more other features, integrals, steps, operations, and / or a collection thereof.

[0025] It should also be understood that the term “and / or” as used in this specification and the appended claims refers to any combination of one or more of the associated listed items and all possible combinations, and includes such combinations.

[0026] As used in this specification and the appended claims, the term "if" may be interpreted, depending on the context, as "when," "once," "in response to determination," or "in response to detection." Similarly, the phrase "if determined" or "if [described condition or event] is detected" may be interpreted, depending on the context, as meaning "once determined," "in response to determination," "once [described condition or event] is detected," or "in response to detection of [described condition or event]."

[0027] Furthermore, in the description of this invention and the appended claims, the terms "first," "second," "third," etc., are used only for distinguishing descriptions and should not be construed as indicating or implying relative importance.

[0028] References to "one embodiment" or "some embodiments" as described in this specification mean that one or more embodiments of the invention include a specific feature, structure, or characteristic described in connection with that embodiment. Therefore, phrases such as "in one embodiment," "in some embodiments," "in other embodiments," "in still other embodiments," etc., appearing in different parts of this specification do not necessarily refer to the same embodiment, but rather mean "one or more, but not all, embodiments," unless otherwise specifically emphasized. The terms "comprising," "including," "having," and variations thereof mean "including but not limited to," unless otherwise specifically emphasized.

[0029] This application provides a front-end heat exchange module for a thermal management system.

[0030] like Figure 1 As shown, the thermal management system 1 may include, but is not limited to, a front-end heat exchange module 10, an intercooling branch 20, and an electric drive and control branch 30. The front-end heat exchange module 10 may include, but is not limited to, a first heat dissipation branch 11, a second heat dissipation branch 12, and a first three-way proportional valve 13.

[0031] The external ports of the front-end heat exchange module 10 can be divided into an inlet end, a first outlet end, and a second outlet end;

[0032] The inlet of the front-end heat exchange module 10 is connected to both the outlet of the intercooling branch 20 and the outlet of the electric drive and control branch 30. The first outlet of the front-end heat exchange module 10 is connected to the inlet of the intercooling branch 20, and the second outlet of the front-end heat exchange module 10 is connected to the inlet of the electric drive and control branch 30.

[0033] In the front-end heat exchange module 10, the inlet of the first heat dissipation branch 11 is connected to the inlet end of the front-end heat exchange module 10, so that the outlet of the electric drive and control branch 30 and the outlet of the intercooling branch 20 are respectively connected to the inlet of the first heat dissipation branch 11, and the coolant that needs to be cooled flowing out of the electric drive and control branch 30 and the intercooling branch 20 is transferred to the first heat dissipation branch 11 of the front-end heat exchange module 10 for heat dissipation.

[0034] In the front-end heat exchange module 10, the outlet of the first heat dissipation branch 11 is connected to the first end of the first three-way proportional valve 13, and the second end of the first three-way proportional valve 13 is connected to the first outlet end of the front-end heat exchange module 10, thereby connecting the inlet of the intercooling branch 20 to the second end of the first three-way proportional valve 13, and outputting the coolant after being cooled by the first heat dissipation branch 11 to the intercooling branch 20 to cool the components installed on the intercooling branch 20;

[0035] In the front-end heat exchange module 10, the third end of the first three-way proportional valve 13 is connected to the inlet of the second heat dissipation branch 12, and the outlet of the second heat dissipation branch 12 is connected to the second outlet end of the front-end heat exchange module 10. This connects the inlet of the electric drive and control branch 30 to the outlet of the second heat dissipation branch 12, and outputs the coolant after primary cooling through the first heat dissipation branch 11 and secondary cooling through the second heat dissipation branch 12 to the electric drive and control branch 30 to cool the components installed on the electric drive and control branch 30.

[0036] In this embodiment, the first three-way ratio 13 is used to adjust the coolant flow rate diverted to the intercooler branch 20 and the second heat dissipation branch 12 according to the heat dissipation requirements of the intercooler branch 20 and the electric drive and control branch 30.

[0037] In practice, the temperature requirements of the various components to be cooled in the intercooling branch 20 and the electric drive and control branch 30 are different. The inlet water temperature required by the electric drive and control branch 30 is often lower than that required by the intercooling branch 20. For example, the intercooling branch 20 requires an inlet water temperature of no more than 72°C, while in the electric drive and control branch 30, the electric drive, electric control and other new energy components require an inlet water temperature of no more than 65°C.

[0038] This application embodiment precisely allocates coolant flow rate and heat dissipation capacity according to the temperature requirements of different components. The first heat dissipation branch 11 firstly cools the coolant flowing into the front-end heat exchange module 10, ensuring that the coolant temperature output from the first heat dissipation branch 11 to the intercooling branch 20 meets the inlet temperature requirement of the intercooling branch 20. Furthermore, the coolant flowing out from the third end of the first three-way proportional valve 13 after being diverted is transferred to the second heat dissipation branch 12 for secondary cooling, ensuring that the coolant temperature flowing out from the second heat dissipation branch 12 to the electric drive and control branch 30 meets the inlet temperature requirement of the electric drive and control branch 30.

[0039] It should be noted that the intercooling branch 20 houses components in the intercooling system that require cooling, such as the intercooler. The electric drive and control branch 30 houses components in the electric drive and control system that require cooling, such as the electric drive equipment and the electric drive controller.

[0040] In summary, this embodiment connects the intercooling branch and the electric drive / control branch in parallel to the first cooling branch. The first cooling branch provides primary cooling for the intercooling branch and simultaneously provides primary cooling for the electric drive / control branch. A first three-way proportional valve adjusts the coolant flow into the intercooling branch and the second cooling branch, further adjusting the cooling effect on the intercooling branch by controlling the flow rate. Simultaneously, the second cooling branch provides secondary cooling for the electric drive / control branch. This achieves secondary cooling of the electric drive / control circuit, precise allocation of flow rate and heat exchange capacity across each branch, and accurately meets the heat exchange requirements of different components. It avoids overcooling and overheating of components, minimizes the energy consumed for cooling and heat exchange in each branch, improves heat exchange efficiency, and enhances the overall vehicle thermal management performance.

[0041] In conventional vehicles and hybrid vehicles, the radiator for the engine cooling circuit is placed in the ventilation position at the front of the vehicle, along with a matching cooling fan.

[0042] In the embodiments of this application, such as Figure 2 As shown, the front-end heat exchange module 10 also includes a first radiator 14 connected in series in the engine cooling circuit 40 and a first cooling fan 15 that is matched with the first radiator 14. The first cooling fan 15 is positioned toward the first radiator 14 so as to adjust the airflow speed in contact with the first radiator and accelerate the heat dissipation of the first radiator 14.

[0043] In this embodiment of the application, the first heat dissipation branch 11 in the front-end heat exchange module 10 may include a second heat sink 111 and a first cooling component;

[0044] The second radiator 111 is positioned facing the first radiator 14, so that the first radiator 14 and the second radiator 111 are stacked in layers in front of the first cooling fan 15, so that the second radiator 111 can also work with the first cooling fan 15 to dissipate heat. The first cooling fan 15 is used to adjust the airflow around the second radiator 111 to accelerate the heat dissipation of the second radiator 111.

[0045] The inlet of the first heat dissipation branch 11 is connected to the inlet of the second radiator 111, and the outlet of the second radiator 111 is connected to the outlet of the first heat dissipation branch 11. In this embodiment, a first cooling component is also provided between the inlet of the first heat dissipation branch 11 and the inlet of the second radiator 111. In some embodiments, the first cooling component can be directly connected in series to the coolant transmission pipeline between the inlet of the first heat dissipation branch 11 and the inlet of the second radiator 111, or it can be disposed on one side of the coolant transmission pipeline between the inlet of the first heat dissipation branch 11 and the inlet of the second radiator 111. This first cooling component is used to reduce the temperature of the coolant in the pipeline and the temperature of the coolant flowing into the second radiator 111. In this way, the heat exchanged between the second radiator 111 and the outside air is reduced, thereby reducing the air temperature around the second radiator 111 and the first radiator 14, preventing the heat dissipation of the second radiator 111 from affecting the heat exchange efficiency of the first radiator 14, and ensuring the cooling effect of the engine cooling circuit. This method eliminates the need to increase the speed of the cooling fan to ensure the heat dissipation effect of the first radiator, thus avoiding the impact of the high-speed operation of the first cooling fan on the NVH performance of the vehicle.

[0046] Based on the above embodiments, such as Figure 2 As shown, in this embodiment of the application, a second three-way proportional valve 112 may also be provided in the first heat dissipation branch 11;

[0047] The first end of the second three-way proportional valve 112 is connected to the inlet of the first heat dissipation branch 11;

[0048] The second end of the second three-way proportional valve 112 is connected to the inlet of the second radiator 111;

[0049] The first cooling component is positioned between the inlet of the second radiator 111 and the third end of the second three-way proportional valve 112.

[0050] By adjusting the valve opening of the second three-way proportional valve 112, the flow rate of coolant flowing through the first cooling component is adjusted, thereby flexibly and accurately adjusting the coolant temperature input to the second radiator 111 as needed.

[0051] like Figure 2 As shown, an electronically driven water pump 113 can be installed at the inlet of the first heat dissipation branch 11 to drive the coolant to circulate between the various branches of the front-end heat exchange module 10, and a first expansion tank 114 can be installed for water replenishment. When there are three pipelines that cross each other, they can be connected at the connection point of the three pipelines using a pipeline connector.

[0052] Based on the above embodiments, the first cooling component may include a third heat sink 115 and / or a second cooling fan 116.

[0053] The third radiator 115 and / or the second cooling fan 116 are respectively arranged between the third end of the second three-way proportional valve and the inlet of the second radiator. For example, the third radiator 115 can be directly connected in series between the inlet of the second radiator 111 and the third end of the second three-way proportional valve 112, so that the coolant flowing into the second radiator 111 is first cooled by the third radiator 115. Alternatively, the second cooling fan 116 can be installed on one side of the coolant pipeline between the inlet of the second radiator 111 and the third end of the second three-way proportional valve 112, so as to reduce the temperature of the coolant flowing in the pipeline. Alternatively, the third radiator 115 and the second cooling fan 116 can be installed simultaneously, with the second cooling fan 116 positioned in the direction the third radiator 115 faces, so as to adjust the airflow around the third radiator 115 and accelerate the heat dissipation of the third radiator 115.

[0054] When the first cooling assembly includes a third radiator 115 and / or a second cooling fan 116, the position of the first cooling assembly is offset from the orientation of the first cooling fan 15. For example, the first radiator 14, the second radiator 111, and the first cooling fan 15 are positioned in the middle of the front of the vehicle, with the second radiator 111 on the first layer, the first radiator 14 on the second layer, and the first cooling fan 15 on the third layer; the first cooling assembly is positioned on the left side of the front of the vehicle. This avoids the heat exchanged from the coolant pipes to the air by the first cooling assembly affecting the heat dissipation effect of the second radiator 111 and the first radiator 14.

[0055] In some embodiments, the first cooling assembly may also be other forms of condenser or heat exchanger, with one side of the condenser connected in series before the second radiator and the other side connected in series in a cooling loop, thereby reducing the coolant temperature at the inlet of the second radiator.

[0056] In some embodiments, such as Figure 3 As shown, the second heat dissipation branch 12 includes a fourth heat sink 121 and a second cooling component;

[0057] The fourth radiator 121 is positioned facing the first cooling fan 15 so that the fourth radiator 121 works in conjunction with the first cooling fan 15 to dissipate heat; the first cooling fan 15 is used to adjust the airflow around the fourth radiator 121 to accelerate the heat dissipation of the fourth radiator 121.

[0058] The inlet of the fourth radiator 121 is connected to the inlet of the second heat dissipation branch 12, and the outlet of the fourth radiator 121 is connected to the outlet of the second heat dissipation branch 12.

[0059] The second cooling assembly is disposed between the inlet of the fourth radiator 121 and the inlet of the second heat dissipation branch 12. The second cooling assembly is used to reduce the temperature of the coolant flowing into the fourth radiator 121.

[0060] This embodiment utilizes a fourth radiator to further reduce the temperature of the coolant output from the second radiator, ensuring that the coolant temperature input to the electric drive and control circuit meets the inlet temperature requirements of the electric drive and control circuit. A second cooling component is installed before the inlet of the fourth radiator to reduce the temperature of the coolant flowing into the fourth radiator, thereby reducing the heat dissipation of the fourth radiator and minimizing the impact of the fourth radiator's heat dissipation on the air temperature surrounding the second and first radiators, thus ensuring the heat exchange efficiency of the second and first radiators.

[0061] Furthermore, a third three-way proportional valve 122 can be installed at the inlet of the fourth radiator 121.

[0062] The first end of the third three-way proportional valve 122 is connected to the inlet of the second heat dissipation branch 12;

[0063] The second end of the third three-way proportional valve 122 is connected to the inlet of the fourth radiator 121;

[0064] The second cooling component is disposed between the inlet of the second heat dissipation branch 12 and the third end of the third three-way proportional valve 122.

[0065] In some embodiments, the second cooling component can be directly connected in series to the coolant transmission pipeline between the inlet of the second heat dissipation branch 12 and the third end of the third three-way proportional valve 122, or it can be disposed on one side of the coolant transmission pipeline between the inlet of the second heat dissipation branch 12 and the third end of the third three-way proportional valve 122. This second cooling component is used to reduce the temperature of the coolant in the pipeline and the temperature of the coolant flowing into the fourth radiator 121. In this way, the heat exchanged between the fourth radiator 121 and the outside air is reduced, thereby lowering the air temperature around the fourth radiator 121, the second radiator 111, and the first radiator 14. This prevents the heat dissipation of the fourth radiator 121 from affecting the heat exchange efficiency of the first radiator 14 and the second radiator 111, ensuring the cooling effect of the engine cooling circuit 40 and the intercooler branch 20. This method eliminates the need to increase the speed of the cooling fan to ensure the heat dissipation effect of the first radiator 14, avoiding the impact of high-speed cooling fan operation on the vehicle's NVH performance.

[0066] In some embodiments, the second cooling assembly includes a fifth radiator 123 and / or a third cooling fan 124, and the position of the second cooling assembly is offset from the orientation of the first cooling fan 14. It should be noted that the arrangement of the second cooling assembly can be referred to the description of the arrangement of the first cooling assembly, and will not be repeated here. Where both the second and first cooling assemblies are provided, they can be respectively positioned on the left and right sides of the front of the vehicle.

[0067] like Figure 4 As shown, based on the above embodiment, the front-end heat exchange module 10 further includes an air-cooled condenser 16;

[0068] The air-cooled condenser 16 is disposed on the plane of the fourth radiator 121 facing the first cooling fan 15. Both the air-cooled condenser 16 and the fourth radiator 121 are used in conjunction with the first cooling fan 15 for heat dissipation.

[0069] The air-cooled condenser 16 is connected in series in the refrigerant circuit of the thermal management system. The air-cooled condenser is used to dissipate the battery heat and / or crew compartment heat absorbed by the refrigerant circuit.

[0070] The refrigerant circuit can be understood as the air conditioning refrigeration circuit. In the refrigerant circuit, the air-cooled condenser 16 is located at the outlet of the compressor 51. The inlet of the air-cooled condenser 16 is connected to the outlet of the compressor 51. The outlet of the air-cooled condenser 16 is connected to the inlet of the refrigeration branch. The outlet of the refrigeration branch is connected to the inlet of the compressor.

[0071] The cooling branch may include an air conditioning cooling branch 52 and a battery cooling branch, with the air conditioning cooling branch 52 connected in parallel with the battery cooling branch.

[0072] In some embodiments, the air conditioning cooling branch 52 may include components such as an evaporator and an expansion valve. The evaporator absorbs the temperature from the passenger compartment to achieve passenger compartment cooling. The battery cooling branch may include components such as a battery cooler / plate heat exchanger 53 and a two-way solenoid valve 54. The battery cooler / plate heat exchanger 53 exchanges heat from the coolant flowing through the battery pack branch 55 to the refrigerant circuit to achieve battery cooling. Thus, the heat in the refrigerant circuit may include heat absorbed from the passenger compartment and / or heat from the battery.

[0073] The air-cooled condenser 16 exchanges heat from the refrigerant circuit to the outside air. The first cooling fan 15 accelerates airflow around the air-cooled condenser, improving its heat dissipation. Furthermore, the first cooling assembly reduces the heat exchanged by the second radiator 111 with the air, and the second cooling assembly reduces the heat exchanged by the fourth radiator 121 with the air. This overall reduces the temperature of the ambient air exchanging heat with the first radiator 14, second radiator 111, fourth radiator 121, and air-cooled condenser 16, improving the heat dissipation of each radiator and condenser, and enhancing the cooling effect on the engine, passenger compartment, battery pack, and intercooler circuit.

[0074] This application also proposes a thermal management system, such as Figure 1-4 As shown, the thermal management system 1 includes a front-end heat exchange module 10, an electric drive and control branch 30, and an intercooler branch 20;

[0075] The inlet of the first heat dissipation branch 11 in the front-end heat exchange module 10 is connected to the outlet of the electric drive and control branch 30 and the outlet of the intercooling branch 20, respectively.

[0076] The outlet of the first heat dissipation branch 11 is connected to the inlet of the intercooling branch 20 through the first end and the second end of the first three-way proportional valve 13 in the front-end heat exchange module 10.

[0077] The outlet of the second heat dissipation branch 12 in the front-end heat exchange module 10 is connected to the inlet of the electric drive and control branch 30.

[0078] The inlet of the second heat dissipation branch 12 is connected to the third end of the first three-way proportional valve 13.

[0079] In some embodiments, the thermal management system 1 further includes an engine cooling circuit 40, and the front-end heat exchange module 10 further includes a first radiator 14 and a first cooling fan 15, wherein the first radiator 14 is connected in series in the engine cooling circuit 40.

[0080] In some embodiments, the engine cooling circuit 40 includes an engine 41, a thermostat 42, an internal mechanical water pump 43, and a second expansion tank 44.

[0081] The small loop of the engine cooling system / engine cooling circuit is the internal engine loop, which consists of the engine (water jacket) 41, thermostat 42, and engine mechanical water pump 43.

[0082] The main circulation of the engine cooling system / engine circuit is a circuit consisting of the engine (water jacket) 41, thermostat 42, first radiator 14 and first cooling fan 15, and also includes a water replenishment circuit formed by the connection of the second expansion tank 44 and the front pipe joint of the engine mechanical water pump 43, and an overflow circuit formed by the connection of the engine water jacket 41 and the first radiator 14.

[0083] The thermal management system also includes a heating system, a battery cooling system, and a battery heating system.

[0084] The heating system includes: a circuit comprising an engine thermostat 42, a three-way solenoid valve 61, a heater circuit component 62 and an internal mechanical water pump 43, a water supply circuit formed by connecting the second expansion tank 44 to the pipe joint in front of the engine mechanical water pump 43, and an air overflow circuit formed by connecting the second expansion tank 44 to the engine water jacket.

[0085] The battery cooling system includes: a refrigerant circuit for battery cooling, comprising an air conditioning compressor 51, an air-cooled condenser 16, a two-way solenoid valve 54, and a plate heat exchanger 53; and a coolant circuit, comprising the plate heat exchanger 53 and a battery pack branch 55.

[0086] The battery heating system includes: a circuit comprising an engine thermostat 42, a three-way solenoid valve 61, a plate heat exchanger 53 and an internal mechanical water pump 43; a circuit comprising the plate heat exchanger 53 and a battery pack branch 55; a water replenishment circuit formed by connecting the second expansion tank 44 to the pipe joint in front of the engine mechanical water pump 43; and an overflow circuit formed by connecting the second expansion tank 44 to the engine water jacket 41.

[0087] In some embodiments, the first radiator 14, the second radiator 111, the third radiator 115, the fourth radiator 121, and the fifth radiator 124 may all be tube-and-fin radiators; the air-cooled condenser 16 may be a finned air-cooled condenser; the first cooling fan 15, the second cooling fan 116, and the third cooling fan 123 may all be steplessly adjustable electric fans controlled by PWM or Lin signals; the plate heat exchanger 53 may be a core plate type three-inlet and three-outlet heat exchanger, wherein two inlets are for antifreeze / coolant and one inlet is for refrigerant; the electronically driven water pump 113 may be a steplessly adjustable water pump controlled by PWM or Lin signals; the three-way solenoid valve 31 may be a two-position three-way solenoid valve; the first three-way proportional valve 13, the second three-way proportional valve 112, and the third three-way proportional valve 122 may adjust the valve opening according to the requirements of the thermal management system; and the two-way solenoid valve 54 may be a single-way solenoid valve.

[0088] In the embodiments of this application, the various components or parts are interconnected and interact with each other through pipes and pipe joints. The cooling fan, electronically driven water pump, solenoid valve, proportional valve, etc. are all controlled by the vehicle's electrical signals, and the switching between different system functions is realized according to the needs of different systems.

[0089] Through testing, in practical implementation, the front-end heat exchange module and thermal management system proposed in this application, by setting a third radiator before the second radiator, can reduce the inlet and outlet air temperatures of the first radiator by 5°C and 5.4°C respectively under low-speed climbing conditions, ultimately improving the cooling performance of the engine cooling circuit where the first radiator is located by 5.2°C. Furthermore, by setting a fifth radiator before the fourth radiator, the heat dissipation of the fourth radiator is reduced, resulting in a 6.3°C reduction in the outlet air temperature of the fourth radiator. Under the action of the fifth radiator, the inlet and outlet air temperatures of the second radiator are reduced by 2.4°C and 5°C respectively, improving the cooling performance of the medium-temperature cooling circuit by 5.7°C, etc. Based on these effects, the front-end heat exchange module and thermal management system proposed in this application effectively improve the heat exchange efficiency of the front-end heat exchange module. In addition, by rationally allocating the heat exchange capacity of the whole vehicle thermal management, the problems caused by the increased cost, sharp deterioration of NVH performance (external noise deterioration of more than 4dBA, internal noise deterioration of about 10dBA, and steering wheel and seat vibration deterioration of about 10 times) and increased power consumption (increased by about 53.8%) when the existing whole vehicle thermal management architecture is improved by simply increasing the power of the cooling fan to improve the heat exchange efficiency of the radiator and meet the heat exchange demand are solved.

[0090] To implement the above embodiments, this application also proposes a vehicle, such as... Figure 5 As shown, vehicle 50 may include the thermal management system 1 described in any of the above embodiments.

[0091] The above-described embodiments are only used to illustrate the technical solutions of this application, and are not intended to limit them. Although this application has been described in detail with reference to the foregoing embodiments, those skilled in the art should understand that modifications can still be made to the technical solutions described in the foregoing embodiments, or equivalent substitutions can be made to some of the technical features. Such modifications or substitutions do not cause the essence of the corresponding technical solutions to deviate from the spirit and scope of the technical solutions of the embodiments of this application, and should all be included within the protection scope of this application.

Claims

1. A front-end heat exchange module for a thermal management system, characterized in that, The front-end heat exchange module includes: First heat dissipation branch, second heat dissipation branch, first three-way proportional valve; The inlet of the first heat dissipation branch is connected to the outlet of the electric drive and control branch and the outlet of the intercooling branch in the thermal management system, respectively. The outlet of the first heat dissipation branch is connected to the first end of the first three-way proportional valve, the second end of the first three-way proportional valve is connected to the inlet of the intercooling branch, and the third end of the first three-way proportional valve is connected to the inlet of the second heat dissipation branch. The outlet of the second heat dissipation branch is connected to the inlet of the electric drive and control branch; The front-end heat exchange module also includes a first radiator connected in series in the engine cooling circuit and a first cooling fan that is matched with the first radiator. The first cooling fan is arranged towards the first radiator. The second heat dissipation branch includes a fourth radiator and a second cooling component. The fourth radiator is positioned facing the first cooling fan so that it works in conjunction with the first cooling fan to dissipate heat; the inlet of the fourth radiator is connected to the inlet of the second heat dissipation branch, and the outlet of the fourth radiator is connected to the outlet of the second heat dissipation branch. The second cooling component is disposed between the inlet of the fourth radiator and the inlet of the second heat dissipation branch; the second cooling component is used to reduce the temperature of the coolant flowing into the fourth radiator.

2. The front-end heat exchange module as described in claim 1, characterized in that, The front-end heat exchange module also includes a first radiator connected in series in the engine cooling circuit and a first cooling fan that is matched with the first radiator. The first cooling fan is arranged toward the first radiator. The first heat dissipation branch includes a second radiator and a first cooling component. The second heat sink is positioned facing the first cooling fan so that the second heat sink works in conjunction with the first cooling fan to dissipate heat. The inlet of the second radiator is connected to the inlet of the first heat dissipation branch, and the outlet of the second radiator is connected to the outlet of the first heat dissipation branch; The first cooling component is disposed between the inlet of the second radiator and the inlet of the first heat dissipation branch; the first cooling component is used to reduce the temperature of the coolant flowing into the second radiator.

3. The front-end heat exchange module as described in claim 2, characterized in that, The first heat dissipation branch also includes a second three-way proportional valve; The first end of the second three-way proportional valve is connected to the inlet of the first heat dissipation branch; The second end of the second three-way proportional valve is connected to the inlet of the second radiator; The first cooling component is disposed between the inlet of the second radiator and the third end of the second three-way proportional valve.

4. The front-end heat exchange module as described in claim 2 or 3, characterized in that, The first cooling component includes a third heat sink and / or a second cooling fan, and the first cooling component is positioned offset from the position in which the first cooling fan faces.

5. The front-end heat exchange module as described in claim 1, characterized in that, The second heat dissipation branch also includes a third three-way proportional valve; The first end of the third three-way proportional valve is connected to the inlet of the second heat dissipation branch; The second end of the third three-way proportional valve is connected to the inlet of the fourth radiator; The second cooling component is disposed between the inlet of the second heat dissipation branch and the third end of the third three-way proportional valve.

6. The front-end heat exchange module as described in claim 1, characterized in that, The second cooling assembly includes a fifth radiator and / or a third cooling fan, and the second cooling assembly is positioned offset from the position in which the first cooling fan faces.

7. The front-end heat exchange module as described in claim 1, characterized in that, The front-end heat exchange module also includes an air-cooled condenser; The air-cooled condenser is disposed on the plane of the fourth radiator, the air-cooled condenser faces the first cooling fan, and both the air-cooled condenser and the fourth radiator are used in conjunction with the first cooling fan for heat dissipation. The air-cooled condenser is connected in series in the refrigerant circuit of the thermal management system, and the air-cooled condenser is used to dissipate the battery heat and / or crew compartment heat absorbed by the refrigerant circuit.

8. A thermal management system, characterized in that, The thermal management system includes a front-end heat exchange module, an electric drive and control branch, and an intercooling branch as described in any one of claims 1-7. The inlet of the first heat dissipation branch in the front-end heat exchange module is connected to the outlet of the electric drive and control branch and the outlet of the intercooling branch, respectively. The outlet of the first heat dissipation branch passes through the first end and the second end of the first three-way proportional valve in the front-end heat exchange module and is connected to the inlet of the intercooling branch. The outlet of the second heat dissipation branch in the front-end heat exchange module is connected to the inlet of the electric drive and control branch. The inlet of the second heat dissipation branch is connected to the third end of the first three-way proportional valve.

9. A vehicle, characterized in that, Includes the thermal management system as described in claim 8.

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