A thermal management system, a control method of the thermal management system, and a vehicle

Abstract

The embodiment of the application provides a kind of thermal management system, the control method of thermal management system and vehicle, thermal management system at least includes electric appliance module, engine intake cooler, low temperature radiator, medium temperature radiator, first control valve and pipeline assembly, electric appliance module is equipped with heat exchange element;Engine intake cooler, low temperature radiator, medium temperature radiator and heat exchange element are communicated with first control valve by pipeline assembly, first control valve has first working position and second working position;When first control valve is in first working position, low temperature radiator, heat exchange element and medium temperature radiator are connected in series to form first heat exchange circuit, and engine intake cooler and medium temperature radiator are connected in series to form second heat exchange circuit;When first control valve is in second working position, low temperature radiator, heat exchange element and engine intake cooler are connected in series to form third heat exchange circuit.The application solves the technical problem that the cooling system of hybrid vehicle in the prior art is prone to over-temperature.

Description

Technical Field

[0001] This application relates to the technical field of thermal management systems, and more specifically, to a thermal management system, a control method for the thermal management system, and a vehicle. Background Technology

[0002] With the continuous development of vehicle technology, thermal management issues in high-temperature environments are becoming increasingly prominent. Especially in tropical regions, when vehicles are parked and generating electricity, the engine operates under high load for extended periods, leading to significant heat dissipation demands. This can easily cause the cooling system to overheat, resulting in decreased engine performance, increased fuel consumption, and even serious problems such as engine damage. Simultaneously, under heavy driving conditions, the coolant temperature in the low-temperature circuit can also easily exceed the limit, affecting the normal operation of the vehicle and the performance of its components.

[0003] There is currently no good solution to the technical problem of overheating in the cooling systems of hybrid vehicles in existing technologies. Summary of the Invention

[0004] This application provides a thermal management system, a control method for the thermal management system, and a vehicle, to at least solve the technical problem of overheating in the cooling system of hybrid vehicles in the prior art.

[0005] According to one aspect of the embodiments of this application, a thermal management system is provided. The thermal management system includes at least an electrical module, an engine intake air cooler, a low-temperature radiator, a medium-temperature radiator, a first control valve, and a piping assembly. The electrical module is provided with a heat exchange element. The engine intake air cooler, the low-temperature radiator, the medium-temperature radiator, and the heat exchange element are respectively connected to the first control valve through the piping assembly. The first control valve has a first working position and a second working position. When the first control valve is in the first working position, the low-temperature radiator, the heat exchange element, and the medium-temperature radiator are connected in series to form a first heat exchange circuit, and the engine intake air cooler and the medium-temperature radiator are connected in series to form a second heat exchange circuit. When the first control valve is in the second working position, the low-temperature radiator, the heat exchange element, and the engine intake air cooler are connected in series to form a third heat exchange circuit.

[0006] Furthermore, the first control valve is a three-way valve, and the first control valve has valve port a, valve port b, and valve port c. The piping assembly includes: a first pipe, one end of which is connected to valve port a, and the other end of which is connected to the first end of the low-temperature radiator; a second pipe, one end of which is connected to the second end of the low-temperature radiator, and the other end of which is connected to the first end of the heat exchange element; a third pipe, one end of which is connected to the first end of the medium-temperature radiator, and the other end of which is connected to valve port b; and a fourth pipe, one end of which is connected to valve port c, and the other end of which is connected to the first end of the engine intake air cooler; wherein, the first end of the medium-temperature radiator has a first state of being connected to the second end of the heat exchange element, the first end of the medium-temperature radiator has a second state of being connected to the second end of the engine intake air cooler, and the second end of the heat exchange element has a third state of being connected to the second end of the engine intake air cooler.

[0007] Furthermore, the piping assembly also includes: a fifth pipe, one end of which is connected to the second end of the engine intake air cooler, and the other end of which is connected to the second end of the intermediate temperature radiator; a sixth pipe, one end of which is connected to the second end of the heat exchange element, and the other end of which is connected to the middle of the fifth pipe; wherein, a shut-off valve is provided on the fifth pipe, and the shut-off valve is located between the second end of the intermediate temperature radiator and the second end of the heat exchange element.

[0008] Furthermore, a first water pump is provided on the sixth pipeline, and / or a second water pump is provided on the third pipeline.

[0009] Furthermore, the electrical module includes: an intelligent driving controller, a DC-DC converter, and a gearbox. The intelligent driving controller is provided with a first heat exchange element, the DC-DC converter is provided with a second heat exchange element, and the gearbox is provided with a third heat exchange element. The first heat exchange element, the second heat exchange element, and the third heat exchange element are connected in series through a seventh pipeline.

[0010] According to another aspect of the embodiments of this application, a control method for a thermal management system is also provided. The thermal management system is the aforementioned thermal management system. The control method includes the following steps: acquiring the driving state of the vehicle, wherein the driving state includes at least: the intake air temperature of the engine, the ambient temperature of the vehicle, the vehicle speed, and the power battery charge; based on the driving state meeting preset conditions, controlling the thermal management system to execute a first heat exchange mode or a second heat exchange mode, wherein when the thermal management system is in the first heat exchange mode, the first heat exchange loop and the second heat exchange loop operate simultaneously, and when the thermal management system is in the second heat exchange mode, the third heat exchange loop operates.

[0011] Furthermore, based on the driving state meeting preset conditions, the thermal management system is controlled to execute a first heat exchange mode or a second heat exchange mode, including: when the engine intake air temperature is within the calibrated temperature range, determining whether the power battery charge is greater than or equal to the preset charge; if so, controlling the thermal management system to execute the second heat exchange mode.

[0012] Furthermore, based on the driving state meeting preset conditions, controlling the thermal management system to execute the first heat exchange mode or the second heat exchange mode also includes: when the engine intake air temperature is within the calibrated temperature range and the power battery charge is less than the preset charge, determining whether the vehicle speed is greater than the preset vehicle speed; if so, controlling the thermal management system to execute the first heat exchange mode.

[0013] Furthermore, based on the driving state meeting preset conditions, controlling the thermal management system to execute the first heat exchange mode or the second heat exchange mode also includes: when the engine intake air temperature is within the calibrated temperature range, the power battery charge is less than the preset charge, and the vehicle speed is less than or equal to the preset vehicle speed, determining whether the ambient temperature of the vehicle is greater than or equal to the preset temperature; if so, controlling the thermal management system to execute the second heat exchange mode.

[0014] According to another aspect of the embodiments of this application, a vehicle is also provided, the vehicle including the thermal management system described above.

[0015] In the embodiments of this application, the heat exchange element of the electrical module and the engine intake air cooler are integrated into a thermal management system. According to the real-time operating conditions of the vehicle, the first control valve can be adjusted to a preset position, that is, the optimal heat exchange circuit is selected to cool the electrical module and / or the engine intake air cooler to achieve the best cooling effect, thereby effectively avoiding overheating of the heat exchange circuit and ensuring that the electrical module and the engine intake air cooler do not overheat. Attached Figure Description

[0016] The accompanying drawings, which are included to provide a further understanding of this application and form part of this application, illustrate exemplary embodiments and are used to explain this application, but do not constitute an undue limitation of this application. In the drawings:

[0017] Figure 1 This is a schematic diagram of the thermal management system in the first embodiment of this application;

[0018] Figure 2 This is a schematic diagram of the thermal management system in the second embodiment of this application.

[0019] The above figures include the following reference numerals:

[0020] 1. Engine intake air cooler;

[0021] 2. Low-temperature radiator;

[0022] 3. Medium-temperature radiator;

[0023] 4. First control valve;

[0024] 50. Heat exchange elements;

[0025] 51. First heat exchange element; 52. Second heat exchange element; 53. Third heat exchange element;

[0026] 61. First pipeline; 62. Second pipeline; 63. Third pipeline; 64. Fourth pipeline; 65. Fifth pipeline; 66. Sixth pipeline; 67. Seventh pipeline;

[0027] 7. Shut-off valve;

[0028] 8. First water pump;

[0029] 9. Second water pump;

[0030] 10. Condenser;

[0031] 11. Fan. Detailed Implementation

[0032] To enable those skilled in the art to better understand the present application, the technical solutions in the embodiments of the present application will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present application, and not all embodiments. Based on the embodiments in the present application, all other embodiments obtained by those skilled in the art without creative effort should fall within the scope of protection of the present application.

[0033] It should be noted that the terms "first," "second," etc., in the specification, claims, and accompanying drawings of this application are used to distinguish similar objects and are not necessarily used to describe a specific order or sequence. It should be understood that such data can be interchanged where appropriate so that the embodiments of this application described herein can be implemented in orders other than those illustrated or described herein. Furthermore, the terms "comprising" and "having," and any variations thereof, are intended to cover non-exclusive inclusion; for example, a process, method, system, product, or apparatus that comprises a series of steps or units is not necessarily limited to those steps or units explicitly listed, but may include other steps or units not explicitly listed or inherent to such processes, methods, products, or apparatus.

[0034] Exemplary embodiments according to this application will now be described in more detail with reference to the accompanying drawings. However, these exemplary embodiments may be implemented in many different forms and should not be construed as being limited to the embodiments set forth herein. It should be understood that these embodiments are provided so that the disclosure of this application is thorough and complete, and that the concept of these exemplary embodiments is fully conveyed to those skilled in the art. In the drawings, for clarity, the thickness of layers and regions may be exaggerated, and the same reference numerals are used to denote the same devices, and therefore their description will be omitted.

[0035] Combination Figures 1 to 2 As shown, a thermal management system is provided according to a specific embodiment of this application.

[0036] Specifically, the thermal management system includes at least: an electrical module, an engine intake air cooler 1, a low-temperature radiator 2, a medium-temperature radiator 3, a first control valve 4, and a piping assembly. The electrical module is equipped with a heat exchange element 50. The engine intake air cooler 1, the low-temperature radiator 2, the medium-temperature radiator 3, and the heat exchange element are connected to the first control valve 4 via the piping assembly. The first control valve 4 has a first operating position and a second operating position. When the first control valve 4 is in the first operating position, the low-temperature radiator 2, the heat exchange element, and the medium-temperature radiator 3 are connected in series to form a first heat exchange circuit, and the engine intake air cooler 1 and the medium-temperature radiator 3 are connected in series to form a second heat exchange circuit. When the first control valve 4 is in the second operating position, the low-temperature radiator 2, the heat exchange element, and the engine intake air cooler 1 are connected in series to form a third heat exchange circuit.

[0037] In the embodiments of this application, the heat exchange element of the electrical module and the engine intake air cooler 1 are integrated into a thermal management system. According to the real-time operating conditions of the vehicle, the first control valve 4 can be adjusted to a preset position, that is, the optimal heat exchange circuit is selected to cool the electrical module and / or the engine intake air cooler 1 to achieve the best cooling effect, thereby effectively avoiding overheating of the heat exchange circuit and ensuring that the electrical module and the engine intake air cooler 1 will not overheat.

[0038] It should be noted that, as Figure 1 As shown, the low-temperature radiator 2, condenser 10, medium-temperature radiator 3, fan 11, and heat exchange elements 50 of the electrical module are distributed sequentially from the front to the rear of the vehicle. One side of the medium-temperature radiator 3 is located near the condenser 10, which releases heat, thus affecting the temperature of the cooling medium inside the medium-temperature radiator 3. The other side of the medium-temperature radiator 3 is located near the fan 11, which blows air towards one side of the heat exchange elements. This creates a low-pressure area near the medium-temperature radiator 3. When the vehicle is parked, the high-temperature airflow inside the vehicle will flow towards the medium-temperature radiator 3, further affecting the temperature of the cooling medium inside the medium-temperature radiator 3.

[0039] Understandably, under hybrid operating conditions, the operating temperature of the electrical module is lower than the intake air temperature of the engine, meaning that the cooling capacity required by the heat exchange elements of the electrical module is greater than the cooling capacity required by the engine intake condenser 10.

[0040] Further, the first control valve 4 is a three-way valve, with valve port a, valve port b, and valve port c. The piping assembly includes: a first pipe 61, a second pipe 62, a third pipe 63, and a fourth pipe 64. One end of the first pipe 61 is connected to valve port a, and the other end of the first pipe 61 is connected to the first end of the low-temperature radiator 2. One end of the second pipe 62 is connected to the second end of the low-temperature radiator 2, and the other end of the second pipe 62 is connected to the first end of the heat exchange element. One end of the third pipe 63 is connected to the first end of the medium-temperature radiator 3, and the other end of the third pipe 63 is connected to valve port b. One end of the fourth pipe 64 is connected to valve port c, and the other end of the fourth pipe 64 is connected to the first end of the engine intake air cooler 1. The first end of the medium-temperature radiator 3 has a first state of being connected to the second end of the heat exchange element, a second state of being connected to the second end of the engine intake air cooler 1, and a third state of being connected to the second end of the engine intake air cooler 1.

[0041] In the embodiments of this application, the low-temperature radiator 2 is connected in series with the heat exchange element of the electrical module through the second pipe 62 and is connected to valve port a through the first pipe 61. The medium-temperature radiator 3 is connected to valve port b through the third pipe 63, and the engine intake air cooler 1 is connected to valve port c through the fourth pipe 64. The connection relationship between the valve ports is controlled according to the real-time operating conditions to achieve heat transfer. The connection relationship between the medium-temperature radiator 3, the heat exchange element, and the engine intake air cooler 1 is used to further control the heat exchange circuit, so that the cooling medium flows in the preset circuit and ensures sufficient cooling capacity.

[0042] For example, a three-way valve can be installed between the intermediate-temperature radiator 3, the heat exchange element 50, and the engine intake air cooler 1 to control the connection between the three. Specific connecting pipes and a shut-off valve 7 can be designed between the intermediate-temperature radiator 3, the heat exchange element, and the engine intake air cooler 1 to control the connection between the three.

[0043] Specifically, the piping assembly also includes a fifth pipe 65 and a sixth pipe 66. One end of the fifth pipe 65 is connected to the second end of the engine intake air cooler 1, and the other end of the fifth pipe 65 is connected to the second end of the intermediate temperature radiator 3. One end of the sixth pipe 66 is connected to the second end of the heat exchange element, and the other end of the sixth pipe 66 is connected to the middle of the fifth pipe 65. A shut-off valve 7 is provided on the fifth pipe 65, and the shut-off valve 7 is located between the second end of the intermediate temperature radiator 3 and the second end of the heat exchange element.

[0044] In the embodiments of this application, the fifth pipe 65 connects the engine intake air cooler 1 and the intermediate temperature radiator 3, forming a straight flow path for the cooling medium from the engine intake air cooler 1 to the intermediate temperature radiator 3; the introduction of the sixth pipe 66 causes the heat exchange element and the fifth pipe 65 to intersect midway. After passing through the heat exchange element, the cooling medium selectively enters the engine intake air cooler 1, and the shut-off valve 7 located between the intermediate temperature radiator 3 and the heat exchange element is closed to prevent the cooling medium from flowing towards the intermediate temperature radiator 3 side, thereby preventing the cooling medium from stagnating on the intermediate temperature radiator 3 side.

[0045] like Figure 1 As shown, when the first control valve 4 is in the first working position, valve ports a, b, and c are all open, with valve port b serving as the inlet and valve ports a and c serving as the outlets. At this time, the shut-off valve 7 is open. Cooling medium enters through valve port b. A portion of the cooling medium flows sequentially through the first pipe 61, the low-temperature radiator 2, the second pipe 62, the heat exchange element, the sixth pipe 66, the shut-off valve 7, and the medium-temperature radiator 3, returning to valve port b. This means that the low-temperature radiator 2, the heat exchange element, and the medium-temperature radiator 3 are connected in series, forming the first heat exchange circuit. The other portion of the cooling medium flows sequentially through the fourth pipe 64, the engine intake air cooler 1, the fifth pipe 65, the shut-off valve 7, and the medium-temperature radiator 3, returning to valve port b. This means that the engine intake air cooler 1 and the medium-temperature radiator 3 are connected in series, forming the second heat exchange circuit.

[0046] It should be noted that, Figure 1 The bold solid line in the image represents the flow path of the cooling medium, and the arrow indicates the direction of the cooling medium flow.

[0047] like Figure 2 As shown, when the first control valve 4 is in the second working position, valve port b is closed, and valve ports a and c are both open. Valve port c serves as the inlet, and valve port a serves as the outlet. At this time, the shut-off valve 7 is closed. The cooling medium enters from valve port c and flows sequentially through the first pipe 61, the low-temperature radiator 2, the second pipe 62, the heat exchange element, the sixth pipe 66, the engine intake air cooler 1, and the fourth pipe 64, before returning to valve port c. That is, the low-temperature radiator 2, the heat exchange element, and the engine intake air cooler 1 are connected in series to form a third heat exchange circuit.

[0048] It should be noted that, Figure 2 The bold solid line in the image represents the flow path of the cooling medium, and the arrow indicates the direction of the cooling medium flow.

[0049] Furthermore, a first water pump 8 is provided on the sixth pipeline 66, and / or a second water pump 9 is provided on the third pipeline 63.

[0050] In the embodiments of this application, the arrangement of the first water pump 8 and the second water pump 9 not only provides power for the flow of the cooling medium, but also enables the control of the flow direction by rotating the water pumps in both directions.

[0051] like Figure 1 , Figure 2 As shown, the first water pump 8 is installed on the sixth pipe 66, and the first water pump 8 is used to drive the cooling medium from the first pipe 61 through the heat exchange element to the sixth pipe 66. The second water pump 9 is installed on the third pipe 63, and the second water pump 9 is used to drive the cooling medium from the fifth pipe 65 through the medium-temperature radiator 3 to the third pipe 63.

[0052] Furthermore, the electrical module includes: an intelligent driving controller, a DC-DC converter, and a gearbox. The intelligent driving controller is provided with a first heat exchange element 51, the DC-DC converter is provided with a second heat exchange element 52, and the gearbox is provided with a third heat exchange element 53. The first heat exchange element 51, the second heat exchange element 52, and the third heat exchange element 53 are connected in series through a seventh pipeline 67.

[0053] In the embodiments of this application, the heat exchange elements 50 of each electrical component are connected in series through the seventh pipe 67, which can simultaneously cool multiple electrical components, thereby realizing the integrated design of the cooling circuit of multiple electrical components.

[0054] In the embodiments of this application, the first heat exchange element 51, the second heat exchange element 52 and the third heat exchange element 53 are connected in series on the seventh pipeline 67, and the cooling medium flows through the first heat exchange element 51, the second heat exchange element 52 and the third heat exchange element 53 in sequence.

[0055] According to another specific embodiment of this application, a control method for a thermal management system is also provided. The thermal management system is the same as the thermal management system described in the above embodiment. The control method includes the following steps:

[0056] Step S1: Obtain the vehicle's driving status, which includes at least: engine intake air temperature, ambient temperature of the vehicle, vehicle speed, and power battery charge.

[0057] Step S2: Based on the driving state meeting the preset conditions, control the thermal management system to execute the first heat exchange mode or the second heat exchange mode. When the thermal management system is in the first heat exchange mode, the first heat exchange loop and the second heat exchange loop operate simultaneously. When the thermal management system is in the second heat exchange mode, the third heat exchange loop operates.

[0058] In the embodiments of this application, the operating mode of the thermal management system is dynamically adjusted based on the real-time acquired vehicle driving status, thereby achieving a precise response to the vehicle's thermal management needs, improving thermal management efficiency, optimizing cold energy utilization, enhancing the system's adaptability and reliability, and ultimately improving user experience and vehicle performance.

[0059] It should be noted that the engine intake air temperature is checked for overheating, i.e., if the engine intake air temperature exceeds the preset safety threshold. In this case, the cooling medium of the thermal management system cannot meet the engine intake air demand, and other heat exchange methods or heat exchange paths need to be activated. At the same time, in order to ensure that other components in the thermal management system can exchange heat normally, the consumption of cooling energy by the engine intake air cooler 1 needs to be cut off.

[0060] It should be further explained that the battery charge level determines the vehicle's driving mode. When the battery charge level is greater than or equal to a preset level, the vehicle operates in pure electric mode, meaning it is driven solely by the electric motor. When the battery charge level is less than the preset level, the vehicle operates in hybrid mode, meaning both the engine and the electric motor drive simultaneously. Vehicle speed is used to determine whether the vehicle is in motion or parked. Ambient temperature is used to determine if the environment is hot, as high temperatures can affect the radiator's heat exchange efficiency.

[0061] Furthermore, in step S2, based on the driving state meeting preset conditions, the thermal management system is controlled to execute either the first heat exchange mode or the second heat exchange mode, including the following control steps:

[0062] Step S211: When the engine intake air temperature is within the calibrated temperature range, determine whether the power battery charge is greater than or equal to the preset charge.

[0063] Specifically, the engine intake air temperature is within the calibrated temperature range, and the thermal management system can be used to perform normal heat exchange on the engine intake air cooler 1.

[0064] Step S212: If so, control the thermal management system to execute the second heat exchange mode.

[0065] Specifically, if the power battery charge is greater than or equal to the preset charge, it means that the vehicle is in pure electric drive mode and the engine does not need to run, that is, the engine intake air cooler 1 requires very little cooling energy.

[0066] In the embodiments of this application, when the vehicle is in pure electric drive mode, the control thermal management system executes the second heat exchange mode, that is, the low temperature radiator 2, the heat exchange element and the engine intake air cooler 1 are connected in series to form a third heat exchange circuit. The engine intake air cooler 1 and the heat exchange element of the electrical module are cooled only by the low temperature radiator 2, without the need to activate the medium temperature radiator 3. This ensures that the cooling requirements are met while minimizing energy consumption.

[0067] For example, when the engine intake air temperature is within the calibrated temperature range and the power battery charge is greater than or equal to 50%, the thermal management system is controlled to execute the second heat exchange mode, controlling the valve port b of the first control valve 4 to close, the valve ports a and c to open, and the shut-off valve 7 to close. That is, the low-temperature radiator 2, the heat exchange element and the engine intake air cooler 1 are connected in series to form a third heat exchange circuit.

[0068] Furthermore, step S2, which controls the thermal management system to execute either the first heat exchange mode or the second heat exchange mode based on the driving state meeting preset conditions, also includes the following control steps:

[0069] Step S221: When the engine intake air temperature is within the calibrated temperature range and the power battery charge is less than the preset charge, determine whether the vehicle speed is greater than the preset vehicle speed.

[0070] Specifically, the engine intake air temperature is within the calibrated temperature range, and the thermal management system can be used to perform normal heat exchange on the engine intake air cooler 1.

[0071] Step S222: If so, control the thermal management system to execute the first heat exchange mode.

[0072] Specifically, if the power battery charge is less than the preset charge and the vehicle speed is greater than the preset speed, it indicates that the vehicle is in hybrid driving mode. At this time, the engine is running, the engine temperature is high, and more cooling energy is required.

[0073] In the embodiments of this application, when the vehicle is in a hybrid driving state, the control thermal management system executes the first heat exchange mode, that is, the low temperature radiator 2, the heat exchange element and the medium temperature radiator 3 are connected in series to form the first heat exchange circuit, and the engine intake air cooler 1 and the medium temperature radiator 3 are connected in series to form the second heat exchange circuit. Different heat exchange circuits are required to exchange heat with the engine intake air cooler 1 and the heat exchange element separately in order to achieve the cooling effect.

[0074] For example, when the engine intake air temperature is within the calibrated temperature range, the power battery charge is less than 50%, and the vehicle speed is greater than 0.5 km / h, i.e. the vehicle is in hybrid driving mode, the thermal management system is controlled to execute the second heat exchange mode, and the valve ports a, b, and c of the first control valve 4 are all opened, with valve port b as the inlet, and valve ports a and c as the outlets. The shut-off valve 7 is opened, i.e. the low-temperature radiator 2, the heat exchange element, and the medium-temperature radiator 3 are connected in series to form the first heat exchange circuit, and the engine intake air cooler 1 and the medium-temperature radiator 3 are connected in series to form the second heat exchange circuit.

[0075] Furthermore, step S2, which controls the thermal management system to execute either the first heat exchange mode or the second heat exchange mode based on the driving state meeting preset conditions, also includes the following control steps:

[0076] Step S231: When the engine intake air temperature is within the calibrated temperature range, the power battery charge is less than the preset charge, and the vehicle speed is less than or equal to the preset vehicle speed, determine whether the ambient temperature of the vehicle is greater than or equal to the preset temperature.

[0077] Specifically, if the engine intake air temperature is within the calibrated temperature range, the thermal management system can be used to perform normal heat exchange on the engine intake air cooler 1. If the power battery charge is less than the preset charge and the vehicle speed is less than or equal to the preset speed, it indicates that the vehicle is in parking power generation mode.

[0078] Step S232: If so, control the thermal management system to execute the second heat exchange mode.

[0079] Specifically, if the ambient temperature of the vehicle is greater than or equal to the preset temperature, it means that the vehicle is generating electricity while parked in a high-temperature environment.

[0080] In the embodiments of this application, the vehicle generates electricity while parked in a high-temperature environment. One side of the intermediate-temperature radiator 3 is positioned near the condenser 10, and the other side is positioned near the fan 11. The heat released by the condenser 10 raises the temperature of the cooling medium inside the intermediate-temperature radiator 3. The fan 11 blows air towards the heat exchange element, creating a low-pressure area near the intermediate-temperature radiator 3. When parked, the high-temperature airflow inside the vehicle flows towards the intermediate-temperature radiator 3, further increasing the temperature of the cooling medium inside the intermediate-temperature radiator 3. Furthermore, in a high-temperature environment, the heat exchange effect between the intermediate-temperature radiator 3 and the outside air is poor, making it impossible to cool the intermediate-temperature radiator 3 through air convection. Therefore, the heat exchange circuit should not use the intermediate-temperature radiator 3; otherwise, the preset cooling effect cannot be achieved. Thus, the thermal management system executes the second heat exchange mode, where the intermediate-temperature radiator 3 does not participate in heat exchange.

[0081] For example, when the ambient temperature of the vehicle is greater than or equal to 45°C, the power battery charge is less than 50%, and the vehicle speed is less than or equal to 0.5 km / h, that is, when the vehicle is in a high-temperature parking and power generation state, the thermal management system is controlled to execute the second heat exchange mode, the valve port b of the first control valve 4 is closed, the valve ports a and c are opened, and the shut-off valve 7 is closed. That is, the low-temperature radiator 2, the heat exchange element and the engine intake air cooler 1 are connected in series to form a third heat exchange circuit.

[0082] For example, when the ambient temperature of the vehicle is less than 45°C, the power battery charge is less than 50%, and the vehicle speed is less than or equal to 0.5 km / h, that is, when the vehicle is in a non-high-temperature parking and power generation state, the thermal management system is controlled to execute the second heat exchange mode, and the valve ports a, b and c of the first control valve 4 are all opened, with valve port b as the inlet, and valve ports a and c as the outlets. The shut-off valve 7 is opened, that is, the low-temperature radiator 2, the heat exchange element and the medium-temperature radiator 3 are connected in series to form the first heat exchange circuit, and the engine intake air cooler 1 and the medium-temperature radiator 3 are connected in series to form the second heat exchange circuit.

[0083] For example, when the engine intake air temperature exceeds the calibrated temperature range, that is, when the engine intake air temperature loses temperature, valve port c is closed, and only valve ports a and b are opened.

[0084] According to another specific embodiment of this application, a vehicle is also provided, the vehicle including the thermal management system described in the above embodiments.

[0085] For ease of description, spatial relative terms such as "above," "on top of," "on the upper surface of," "above," etc., are used herein to describe the spatial positional relationship of a device or feature as shown in the figures to other devices or features. It should be understood that spatial relative terms are intended to encompass different orientations in use or operation beyond the orientation of the device as described in the figures. For example, if the device in the figures were inverted, a device described as "above" or "on top of" other devices or structures would subsequently be positioned as "below" or "under" other devices or structures. Thus, the exemplary term "above" can include both "above" and "below." The device may also be positioned in other different ways (rotated 90 degrees or in other orientations), and the spatial relative descriptions used herein will be interpreted accordingly.

[0086] In addition to the above, it should be noted that the terms "one embodiment," "another embodiment," and "embodiment" used in this specification refer to specific features, structures, or characteristics described in connection with that embodiment, which are included in at least one embodiment described in the general description of this application. The appearance of the same expression in multiple places in the specification does not necessarily refer to the same embodiment. Furthermore, when a specific feature, structure, or characteristic is described in connection with any embodiment, the intention is to suggest that implementing such a feature, structure, or characteristic in conjunction with other embodiments also falls within the scope of this invention.

[0087] In the above embodiments, the descriptions of each embodiment have different focuses. For parts not described in detail in a certain embodiment, please refer to the relevant descriptions in other embodiments.

[0088] The above description is merely a preferred embodiment of the present invention and is not intended to limit the invention. Various modifications and variations can be made to the present invention by those skilled in the art. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present invention should be included within the scope of protection of the present invention.

Claims

1. A thermal management system, characterized by, The thermal management system includes at least an electrical module, an engine intake air cooler (1), a low-temperature radiator (2), a medium-temperature radiator (3), a first control valve (4), and a piping assembly. The electrical module is equipped with a heat exchange element (50). The engine intake air cooler (1), the low temperature radiator (2), the medium temperature radiator (3) and the heat exchange element (50) are respectively connected to the first control valve (4) through the pipeline assembly. The first control valve (4) has a first working position and a second working position. When the first control valve (4) is in the first working position, the low temperature radiator (2), the heat exchange element (50) and the medium temperature radiator (3) are connected in series to form a first heat exchange circuit, and the engine intake air cooler (1) and the medium temperature radiator (3) are connected in series to form a second heat exchange circuit. When the first control valve (4) is in the second working position, the low temperature radiator (2), the heat exchange element (50) and the engine intake air cooler (1) are connected in series to form a third heat exchange circuit; The first control valve (4) is a three-way valve, and the first control valve (4) is provided with valve port a, valve port b, and valve port c. The pipeline assembly includes: The first pipeline (61) has one end connected to the valve port a and the other end connected to the first end of the low-temperature radiator (2). The second pipe (62) has one end connected to the second end of the low-temperature radiator (2) and the other end connected to the first end of the heat exchange element (50). The third pipe (63) has one end connected to the first end of the medium-temperature radiator (3) and the other end connected to the valve port b. The fourth pipe (64) is connected at one end to the valve port c and at the other end to the first end of the engine intake air cooler (1). The first end of the medium-temperature radiator (3) is in a first state connected to the second end of the heat exchange element (50), the first end of the medium-temperature radiator (3) is in a second state connected to the second end of the engine intake cooler (1), and the second end of the heat exchange element (50) is in a third state connected to the second end of the engine intake cooler (1).

2. The thermal management system of claim 1, wherein, The piping assembly also includes: The fifth pipe (65) is connected at one end to the second end of the engine intake cooler (1) and at the other end to the second end of the medium temperature radiator (3). The sixth pipe (66) has one end connected to the second end of the heat exchange element (50) and the other end connected to the middle of the fifth pipe (65); The fifth pipeline (65) is equipped with a shut-off valve (7), which is located between the second end of the medium-temperature radiator (3) and the second end of the heat exchange element (50).

3. The thermal management system of claim 2, wherein, The sixth pipeline (66) is equipped with a first water pump (8), and / or the third pipeline (63) is equipped with a second water pump (9).

4. The thermal management system of any one of claims 1 to 3, wherein, The electrical module includes: an intelligent driving controller, a DC converter and a gearbox. The intelligent driving controller is provided with a first heat exchange element (51), the DC converter is provided with a second heat exchange element (52), and the gearbox is provided with a third heat exchange element (53). The first heat exchange element (51), the second heat exchange element (52) and the third heat exchange element (53) are connected in series through a seventh pipeline (67).

5. A control method of a thermal management system, characterized by, The thermal management system is the thermal management system according to any one of claims 1 to 4, and the control method includes the following steps: The vehicle's driving status is obtained, wherein the driving status includes at least: the engine's intake air temperature, the ambient temperature of the vehicle, the vehicle speed, and the power battery charge. Based on the driving state meeting preset conditions, the thermal management system is controlled to execute a first heat exchange mode or a second heat exchange mode. When the thermal management system is in the first heat exchange mode, the first heat exchange circuit and the second heat exchange circuit operate simultaneously. When the thermal management system is in the second heat exchange mode, the third heat exchange circuit operates.

6. The control method according to claim 5, characterized by Based on the driving state meeting preset conditions, the thermal management system is controlled to execute a first heat exchange mode or a second heat exchange mode, including: If the intake air temperature of the engine is within the calibrated temperature range, determine whether the power battery charge is greater than or equal to the preset charge. If so, control the thermal management system to execute the second heat exchange mode.

7. The control method according to claim 6, characterized by Based on the driving state meeting preset conditions, controlling the thermal management system to execute a first heat exchange mode or a second heat exchange mode further includes: If the engine intake air temperature is within the calibrated temperature range and the power battery charge is less than the preset charge, determine whether the vehicle speed is greater than the preset vehicle speed. If so, control the thermal management system to execute the first heat exchange mode.

8. The control method according to claim 7, characterized in that, Based on the driving state meeting preset conditions, controlling the thermal management system to execute a first heat exchange mode or a second heat exchange mode further includes: If the engine intake temperature is within the calibrated temperature range, the power battery charge is less than the preset charge, and the vehicle speed is less than or equal to the preset vehicle speed, determine whether the ambient temperature of the vehicle is greater than or equal to the preset temperature. If so, control the thermal management system to execute the second heat exchange mode.

9. A vehicle characterized by comprising: The vehicle includes the thermal management system according to any one of claims 1 to 4.

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