Vehicle thermal management control method, system, device and computer readable storage medium

Abstract

The embodiment of the application provides a vehicle thermal management control method, system, device and computer readable storage medium, the method comprises: obtaining the running state parameter of the engine, wherein the running state parameter comprises: engine coolant temperature and engine start-stop state; determine the thermal management working condition of the vehicle based on the running state parameter, wherein the thermal management working condition comprises one of the following: engine preheating working condition, engine constant temperature working condition or engine shutdown working condition; generate a thermal management control instruction according to the thermal management working condition, wherein the thermal management control instruction is used to cooperatively control the working state of the electric shunt valve, the air heating loop actuator and the auxiliary heating device; the thermal management control operation is executed by using the thermal management control instruction. The application solves the technical problems of poor comfort, loud noise and heating interruption in the related art vehicle thermal management control method.

Description

Technical Field

[0001] This application relates to the field of vehicle technology, and more specifically, to a vehicle thermal management control method, system, device, and computer-readable storage medium. Background Technology

[0002] Traditional gasoline and hybrid vehicles generally use a method where engine coolant flows through a single heater core, and then a blower blows air to heat the cabin. Although this method utilizes waste heat from the engine, traditional blower heating still has inherent drawbacks such as poor comfort, high noise levels, and slow response. Furthermore, when a hybrid vehicle is running on pure electric power with the engine off, the heating process is briefly interrupted due to the lack of a heat source, affecting the user experience.

[0003] There is currently no good solution to the above problems. Summary of the Invention

[0004] This application provides a vehicle thermal management control method, system, device, and computer-readable storage medium to at least solve the technical problems of poor comfort, high noise, and heating interruption in related technologies.

[0005] According to one aspect of the embodiments of this application, a vehicle thermal management control method is provided, applied to a vehicle thermal management control system. The system includes: an engine, an electric diverter valve, a warm air circuit actuator, and an auxiliary heating device. The electric diverter valve is used to divert engine coolant to a warm air circuit and a radiant heating circuit. The vehicle thermal management control method includes: acquiring engine operating status parameters, wherein the operating status parameters include: engine coolant temperature and engine start / stop status; determining the vehicle's thermal management condition based on the operating status parameters, wherein the thermal management condition includes one of the following: engine preheating condition, engine constant temperature condition, or engine shutdown condition; generating a thermal management control command according to the thermal management condition, wherein the thermal management control command is used to coordinate the control of the operating status of the electric diverter valve, the warm air circuit actuator, and the auxiliary heating device; and executing thermal management control operations using the thermal management control command.

[0006] Optionally, determining the vehicle's thermal management condition based on operating status parameters includes: in response to an engine start-stop status indication that the engine is in operation and the engine coolant temperature is less than a preset temperature threshold, determining the thermal management condition as an engine preheating condition.

[0007] Optionally, generating thermal management control instructions based on thermal management conditions includes: generating a first control instruction in response to the thermal management condition being an engine preheating condition, wherein the first control instruction is used to control the electric diverter valve to allow engine coolant to flow simultaneously to the air heating circuit and the radiant heating circuit, control the auxiliary heating device to be in the on state, and control the air heating circuit actuator to be in the on state.

[0008] Optionally, the vehicle thermal management control method further includes: in response to the engine coolant temperature entering a preset temperature range during engine preheating, controlling the output power of the auxiliary heating device to switch from a first power level to a second power level, and controlling the operating wind speed of the air heating circuit actuator to switch from a first wind speed level to a second wind speed level, wherein the second power level is lower than the first power level, and the second wind speed level is lower than the first wind speed level.

[0009] Optionally, determining the vehicle's thermal management condition based on operating status parameters includes: in response to an engine start-stop status indication that the engine is in operation and the engine coolant temperature is greater than or equal to a preset temperature threshold, determining the thermal management condition as an engine constant temperature condition.

[0010] Optionally, generating thermal management control commands based on thermal management conditions includes: generating a second control command in response to the thermal management condition being an engine constant temperature condition, wherein the second control command is used to control the electric diverter valve to adjust the flow distribution so that the coolant flow rate to the radiant heating circuit is greater than the coolant flow rate to the air heating circuit, control the auxiliary heating device to be in a closed state, and control the air heating circuit actuator to reduce speed or stop operation.

[0011] Optionally, the vehicle thermal management control method further includes: in response to the vehicle's passenger compartment temperature reaching a target temperature under constant engine temperature conditions, controlling the electric diverter valve to block the flow of engine coolant to the air heating circuit and guiding the engine coolant to the radiant heating circuit, controlling the radiant heating circuit to maintain the passenger compartment temperature, and controlling the air heating circuit actuator to be in a closed state.

[0012] Optionally, determining the vehicle's thermal management condition based on operating status parameters includes: in response to an engine start-stop status indication that the engine is in a stopped state, determining the thermal management condition as an engine shutdown condition.

[0013] Optionally, generating thermal management control instructions based on thermal management conditions includes: generating a third control instruction in response to the thermal management condition being an engine shutdown condition, wherein the third control instruction is used to control the electric diverter valve to block the flow of engine coolant to the air heating circuit and guide the flow of engine coolant to the radiant heating circuit, control the auxiliary heating device to be in the on state, and control the air heating circuit actuator to be in the off state.

[0014] Optionally, the vehicle thermal management control system further includes an electric circulation pump, which is installed in the radiant heating circuit. The vehicle thermal management control method further includes starting the electric circulation pump when the engine is off to drive the engine coolant to form an independent circulation circuit between the auxiliary heating device and the radiant heating circuit.

[0015] Optionally, the thermal management control method further includes: in response to detecting that the engine start-stop state has switched from a stopped state to an operating state, controlling the electric diverter valve to adjust the flow distribution so that the coolant flow to the air heating circuit is greater than the coolant flow to the radiant heating circuit, controlling the auxiliary heating device to remain on until the engine coolant temperature reaches a preset temperature threshold, and controlling the air heating circuit actuator to switch from a closed state to a target operating wind speed.

[0016] Optionally, the electric diverter valve is an electric three-way proportional valve, and the thermal management control method further includes: calculating the target opening degree of the electric three-way proportional valve based on the difference between the engine coolant temperature and the preset temperature threshold, and the difference between the passenger compartment temperature and the target temperature; and adjusting the coolant flow ratio to the air heating circuit and the radiant heating circuit according to the target opening degree.

[0017] According to another aspect of the embodiments of this application, a vehicle thermal management control system is also provided. The system includes: an engine, an electric diverter valve, a warm air circuit actuator, an auxiliary heating device, and a controller. The electric diverter valve is used to divert engine coolant to the warm air circuit and the radiant heating circuit. The controller is configured to execute the method in the embodiments of this application.

[0018] Optionally, the inlet of the electric diverter valve is connected to the coolant outlet of the engine, the first outlet of the electric diverter valve is connected to the water inlet of the air heating circuit through the first branch pipe, and the second outlet of the electric diverter valve is connected to the water inlet of the radiant heating circuit through the second branch pipe.

[0019] Optionally, the vehicle thermal management control system also includes an electric circulation pump connected in series in the radiant heating circuit to drive the engine coolant to form an independent circulation loop between the auxiliary heating device and the radiant heating circuit when the engine is off.

[0020] According to another aspect of the embodiments of this application, a vehicle thermal management control device is also provided, applied to a vehicle thermal management control system. The system includes: an engine, an electric diverter valve, a warm air circuit actuator, and an auxiliary heating device. The electric diverter valve is used to divert engine coolant to the warm air circuit and the radiant heating circuit. The vehicle thermal management control device includes: an acquisition module for acquiring engine operating status parameters, wherein the operating status parameters include: engine coolant temperature and engine start / stop status; a determination module for determining the vehicle's thermal management condition based on the operating status parameters, wherein the thermal management condition includes one of the following: engine preheating condition, engine constant temperature condition, or engine shutdown condition; a generation module for generating thermal management control commands based on the thermal management condition, wherein the thermal management control commands are used to coordinate the control of the electric diverter valve, the warm air circuit actuator, and the auxiliary heating device's operating status; and a control module for executing thermal management control operations using the thermal management control commands.

[0021] Optionally, the determining module is further configured to: in response to an engine start-stop status indication that the engine is in operation and the engine coolant temperature is less than a preset temperature threshold, determine the thermal management condition as the engine preheating condition.

[0022] Optionally, the generation module is further configured to: generate a first control command in response to the thermal management condition of engine preheating, wherein the first control command is used to control the electric diverter valve to allow engine coolant to flow simultaneously to the air heating circuit and the radiant heating circuit, control the auxiliary heating device to be in the on state, and control the air heating circuit actuator to be in the on state.

[0023] Optionally, the control module is further configured to: in response to the engine coolant temperature entering a preset temperature range during engine preheating, control the output power of the auxiliary heating device to switch from a first power level to a second power level, and control the operating wind speed of the air heating circuit actuator to switch from a first wind speed level to a second wind speed level, wherein the second power level is lower than the first power level and the second wind speed level is lower than the first wind speed level.

[0024] Optionally, the determining module is further configured to: in response to an engine start-stop status indication that the engine is in operation and the engine coolant temperature is greater than or equal to a preset temperature threshold, determine the thermal management condition as the engine constant temperature condition.

[0025] Optionally, the generation module is also configured to: generate a second control command in response to the thermal management condition being the engine constant temperature condition, wherein the second control command is used to control the electric diverter valve to adjust the flow distribution so that the coolant flow to the radiant heating circuit is greater than the coolant flow to the air heating circuit, control the auxiliary heating device to be in a closed state, and control the air heating circuit actuator to reduce speed or stop operation.

[0026] Optionally, the control module is also configured to: in response to the vehicle's passenger compartment temperature reaching the target temperature under constant engine temperature conditions, control the electric diverter valve to block the flow of engine coolant to the air heating circuit and guide the engine coolant to the radiant heating circuit, control the radiant heating circuit to maintain the passenger compartment temperature, and control the air heating circuit actuator to be in the closed state.

[0027] Optionally, the determining module is also configured to: determine the thermal management condition as the engine shutdown condition in response to an engine start-stop status indication that the engine is in a stopped state.

[0028] Optionally, the generation module is further configured to: generate a third control command in response to the thermal management condition being an engine shutdown condition, wherein the third control command is configured to control the electric diverter valve to block the flow of engine coolant to the air heating circuit and guide the engine coolant to the radiant heating circuit, control the auxiliary heating device to be in the on state, and control the air heating circuit actuator to be in the off state.

[0029] Optionally, the vehicle thermal management control system further includes an electric circulation pump, which is installed in the radiant heating circuit. The vehicle thermal management control device also includes a drive module for starting the electric circulation pump when the engine is off, so as to drive the engine coolant to form an independent circulation circuit between the auxiliary heating device and the radiant heating circuit.

[0030] Optionally, the control module is also configured to: in response to detecting that the engine start-stop state has switched from a stopped state to an operating state, control the electric diverter valve to adjust the flow distribution so that the coolant flow to the air heating circuit is greater than the coolant flow to the radiant heating circuit, control the auxiliary heating device to remain on until the engine coolant temperature reaches a preset temperature threshold, and control the air heating circuit actuator to switch from a closed state to the target operating wind speed.

[0031] Optionally, the electric diverter valve is an electric three-way proportional valve, and the thermal management control device further includes: a calculation module for calculating the target opening degree of the electric three-way proportional valve based on the difference between the engine coolant temperature and the preset temperature threshold, and the difference between the passenger compartment temperature and the target temperature; and an adjustment module for adjusting the coolant flow ratio to the air heating circuit and the radiant heating circuit based on the target opening degree.

[0032] According to another aspect of the embodiments of this application, a vehicle is also provided, including: a memory storing an executable program; and a processor for running the program, wherein the program executes the methods in various embodiments of this application when it runs.

[0033] According to another aspect of the embodiments of this application, a computer-readable storage medium is also provided, the computer-readable storage medium including a stored executable program, wherein, when the executable program is running, it controls the device where the computer-readable storage medium is located to perform the methods of various embodiments of this application.

[0034] According to another aspect of the embodiments of this application, a computer program product is also provided, including a computer program that, when executed by a processor, implements the methods of various embodiments of this application.

[0035] According to another aspect of the embodiments of this application, a computer program product is also provided, including a non-volatile computer-readable storage medium storing a computer program that, when executed by a processor, implements the methods in various embodiments of this application.

[0036] According to another aspect of the embodiments of this application, a computer program is also provided, which, when executed by a processor, implements the methods of the various embodiments of this application.

[0037] In this embodiment, a multi-condition coordinated thermal management control strategy based on engine operating state parameters is adopted. First, the engine operating state parameters are obtained, including engine coolant temperature and engine start / stop status. Then, the vehicle's thermal management condition is determined based on the operating state parameters, including one of the following: engine preheating condition, engine constant temperature condition, or engine shutdown condition. Next, thermal management control commands are generated according to the thermal management conditions. These commands are used to coordinate the operation of the electric diverter valve, the air heating circuit actuator, and the auxiliary heating device. Finally, the thermal management control operation is executed using the thermal management control commands. This involves determining preheating, constant temperature, or shutdown conditions by acquiring engine coolant temperature and start / stop status, and generating coordinated control commands to synchronously adjust the working status of the electric diverter valve, the air heating circuit actuator, and the auxiliary heating device. This achieves the goals of intelligently distributing engine waste heat under different thermal management conditions, coordinating traditional blowing and radiant heating modes, and ensuring continuous heating. As a result, it improves heating comfort, reduces noise, and ensures continuous heating, thereby solving the technical problems of poor comfort, high noise, and heating interruption in related vehicle thermal management control methods. Attached Figure Description

[0038] 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:

[0039] Figure 1 This is a flowchart of an optional vehicle thermal management control method according to an embodiment of this application;

[0040] Figure 2 This is a schematic diagram of an optional vehicle thermal management control method according to an embodiment of this application;

[0041] Figure 3 This is a schematic diagram of another optional vehicle thermal management control method according to an embodiment of this application;

[0042] Figure 4This is a structural block diagram of an optional vehicle thermal management control device according to an embodiment of this application;

[0043] Figure 5 This is a schematic diagram of an optional vehicle according to an embodiment of this application. Detailed Implementation

[0044] 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 of ordinary skill in the art without creative effort should fall within the scope of protection of the present application.

[0045] 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.

[0046] According to an embodiment of this application, a method embodiment of a vehicle thermal management control method is provided. It should be noted that the steps shown in the flowchart in the accompanying drawings can be executed in a computer system such as a set of computer-executable instructions. Furthermore, although a logical order is shown in the flowchart, in some cases, the steps shown or described may be executed in a different order than that shown here.

[0047] This embodiment provides a vehicle thermal management control method. Figure 1 This is a flowchart of an optional vehicle thermal management control method according to an embodiment of this application, such as... Figure 1 As shown. This method is applied to a vehicle thermal management control system, which includes an engine, an electric diverter valve, a warm air circuit actuator, and an auxiliary heating device. The electric diverter valve is used to divert engine coolant to the warm air circuit and the radiant heating circuit. The process includes the following steps:

[0048] Step S11: Obtain the engine's operating status parameters, including: engine coolant temperature and engine start / stop status;

[0049] Step S12: Determine the vehicle's thermal management condition based on the operating status parameters. The thermal management condition includes one of the following: engine preheating condition, engine constant temperature condition, or engine shutdown condition.

[0050] Step S13: Generate thermal management control instructions based on thermal management operating conditions. The thermal management control instructions are used to coordinate the operation of the electric diversion valve, the air heating circuit actuator, and the auxiliary heating device.

[0051] Step S14: Perform thermal management control operations using thermal management control commands.

[0052] The aforementioned engine is the power source of the vehicle and serves as the main heat source in thermal management control. It generates heat by burning fuel and heats the coolant, providing the vehicle with the driving power and thermal energy required for thermal management.

[0053] The aforementioned electric diverter valve is installed on the main circulation pipeline at the engine coolant outlet to divert high-temperature coolant to the air heating circuit and the radiant heating circuit, thereby realizing intelligent distribution and adjustment of the heat source on different heating paths.

[0054] The aforementioned air heating circuit actuator is used to control the on / off state or flow rate of the air heating circuit. By adjusting the amount of coolant entering the conventional air heater tank or working in conjunction with the blower, it achieves precise control over the conventional air blowing heating effect in the cockpit.

[0055] The aforementioned auxiliary heating device uses a liquid-heated positive temperature coefficient (PTC) thermistor heater, which is connected in series in the radiant heating circuit. Its function is to generate heat by consuming electrical energy when the engine is not started or stopped, providing a temporary heat source for the radiant heating circuit and ensuring the continuity of heating.

[0056] The aforementioned engine coolant refers to the heat transfer medium that circulates inside the engine. It is used to absorb the heat generated by engine combustion and transfer the heat to parts that need to be heated, such as the cockpit or battery, through the thermal management system.

[0057] The aforementioned air-heating circuit represents a traditional heating path in the vehicle's thermal management system. Engine coolant flows through the heater core in this circuit, and the heated air is blown into the cabin by a blower to achieve traditional air-heating of the vehicle's interior.

[0058] The aforementioned radiant heating circuit represents a newly added heating path in the vehicle's thermal management system. Engine coolant flows through the distributed radiant panels in this circuit, and far-infrared radiant heat is emitted from the surface of the radiant panels to the driver's cabin floor and surrounding areas, thereby achieving windless and quiet heating of the vehicle's interior space.

[0059] The above-mentioned operating status parameters are a set of data used to characterize the current working condition of the engine. In vehicle thermal management control, they are collected and acquired in real time by sensors and used as the basis for the controller to judge the thermal management conditions. The operating status parameters include engine coolant temperature and engine start / stop status.

[0060] The engine coolant temperature mentioned above represents the actual temperature of the coolant in the engine's circulating cooling system. This value reflects the current thermal state of the engine and is a key physical quantity for determining whether it has entered the preheating or constant temperature stage.

[0061] The aforementioned engine start-stop status indicates whether the engine is currently in operation. This status is used to distinguish whether the vehicle is in a condition where the engine is normally providing waste heat, or in a condition where the engine is off and the vehicle is only driven by the electric motor or battery, thus determining the main heat source supply method.

[0062] The aforementioned thermal management conditions refer to the classification of the current operating mode of the vehicle's thermal management system, determined by the controller based on the acquired engine coolant temperature and engine start / stop status. This classification guides the generation of subsequent control commands. The thermal management conditions include engine preheating, engine constant temperature, or engine shutdown.

[0063] The engine preheating condition mentioned above refers to the thermal management condition when the engine coolant temperature is below the set threshold and the engine is in the start-up state. At this time, the engine has not yet generated enough waste heat and an auxiliary heating device is needed to accelerate the temperature rise.

[0064] The above-mentioned constant temperature engine condition refers to the thermal management condition when the engine coolant temperature reaches the set threshold and the engine is in the start-up state. At this time, the engine has sufficient waste heat, and the system prioritizes the use of waste heat for radiant heating in order to pursue comfort and quietness.

[0065] The above-mentioned engine shutdown condition refers to the thermal management condition when the engine is off and the vehicle is in pure electric driving mode. At this time, the engine waste heat is missing, and the auxiliary heating device must be used to provide heat to maintain the continuity of heating.

[0066] The aforementioned thermal management control command represents a set of control signals generated by the controller based on a defined thermal management operating condition. This command includes coordinated control logic for the operating status of the electric diversion valve, the air heating circuit actuator, and the auxiliary heating device, which is used to guide each actuator to take corresponding action strategies under specific operating conditions.

[0067] The above-mentioned thermal management control operation refers to the specific physical action process by which the electric diversion valve, the air heating circuit actuator, and the auxiliary heating device receive and execute thermal management control commands. This includes the electric diversion valve adjusting the diversion ratio of coolant between the air heating circuit and the radiant heating circuit, the air heating circuit actuator adjusting the blower air volume or circuit on / off, and the auxiliary heating device starting / stopping or adjusting the output power, thereby achieving dynamic regulation of the cabin temperature.

[0068] In step S11, the sensors in the vehicle thermal management control system monitor and collect data characterizing the current operating status of the engine in real time. The operating status parameters specifically include the engine coolant temperature and the engine start / stop status. The data is transmitted to the controller to provide basic data support for subsequent thermal management decisions.

[0069] In step S12, the controller receives the engine coolant temperature and engine start / stop status obtained above, and determines the specific thermal management scenario of the current vehicle through internal logic, that is, whether it is in engine preheating mode, engine constant temperature mode or engine shutdown mode, so as to clarify the current heating strategy requirements.

[0070] In step S13, the controller generates thermal management control commands based on the thermal management conditions determined above and according to the preset control strategy. These commands include specific action requirements for the electric diversion valve, the air heating circuit actuator, and the auxiliary heating device, so as to achieve coordinated control under different operating conditions.

[0071] In step S14, the electric diversion valve, the air heating circuit actuator, and the auxiliary heating device receive the generated thermal management control command and perform corresponding physical actions, such as adjusting the coolant flow direction, regulating the air volume, or activating the electric heating, thereby achieving precise regulation of the cockpit temperature.

[0072] Based on the above steps S11 to S14, this application embodiment adopts a multi-condition coordinated thermal management control strategy based on engine operating state parameters. First, the engine operating state parameters are obtained, including engine coolant temperature and engine start / stop status. Then, the vehicle's thermal management condition is determined based on the operating state parameters, including one of the following: engine preheating condition, engine constant temperature condition, or engine shutdown condition. Next, thermal management control commands are generated according to the thermal management conditions. The thermal management control commands are used to coordinate the operation of the electric diverter valve, the air heating circuit actuator, and the auxiliary heating device. Finally, the thermal management control operation is executed using the thermal management control commands. This involves determining preheating, constant temperature, or shutdown conditions by acquiring engine coolant temperature and start / stop status, and generating coordinated control commands to synchronously adjust the working status of the electric diverter valve, the air heating circuit actuator, and the auxiliary heating device. This achieves the goals of intelligently distributing engine waste heat under different thermal management conditions, coordinating traditional blowing and radiant heating modes, and ensuring continuous heating. As a result, it improves heating comfort, reduces noise, and ensures continuous heating, thereby solving the technical problems of poor comfort, high noise, and heating interruption in related vehicle thermal management control methods.

[0073] Optionally, determining the vehicle's thermal management condition based on operating status parameters includes: in response to an engine start-stop status indication that the engine is in operation and the engine coolant temperature is less than a preset temperature threshold, determining the thermal management condition as an engine preheating condition.

[0074] The engine coolant temperature mentioned above represents the actual temperature of the coolant in the engine's circulating cooling system. This value reflects the current thermal state of the engine and is a key physical quantity for determining whether it has entered the preheating or constant temperature stage.

[0075] The aforementioned preset temperature threshold represents the target temperature limit value used to distinguish different thermal management stages of the engine. When the engine coolant temperature is lower than this value, the engine is determined to be in a cold state, requiring additional heat input to accelerate the warm-up process. For example, the preset temperature threshold can be set to 80°C.

[0076] When determining the vehicle's thermal management condition based on operating status parameters, this embodiment of the application responds to the engine start-stop status indicating that the engine is running and the engine coolant temperature is lower than a preset temperature threshold, determining the thermal management condition as the engine preheating condition. For example, the controller monitors operating status parameters in real time. When it detects that the engine start-stop status indicates the engine is running, and simultaneously detects that the engine coolant temperature is lower than the preset temperature threshold, the controller logic determines that the current vehicle is in the engine preheating condition, thereby triggering a control strategy for rapid warm-up during cold starts.

[0077] Based on the above optional embodiments, this application embodiment determines the thermal management condition as the engine preheating condition by responding to the engine start-stop state indication that the engine is in operation and the engine coolant temperature is less than a preset temperature threshold. This achieves accurate identification of the thermal management condition during the engine cold start phase, thereby ensuring that the system can correctly enter the preheating control logic when the engine coolant temperature is not up to standard, providing a basis for condition judgment for rapidly increasing the vehicle interior temperature.

[0078] Optionally, generating thermal management control instructions based on thermal management conditions includes: generating a first control instruction in response to the thermal management condition being an engine preheating condition, wherein the first control instruction is used to control the electric diverter valve to allow engine coolant to flow simultaneously to the air heating circuit and the radiant heating circuit, control the auxiliary heating device to be in the on state, and control the air heating circuit actuator to be in the on state.

[0079] The aforementioned first control command indicates a specific control signal generated by the controller when the thermal management condition is determined to be the engine preheating condition. This signal is used to simultaneously activate the air heating circuit and the radiant heating circuit, and start the auxiliary heating device to achieve rapid temperature rise.

[0080] When generating thermal management control commands based on thermal management conditions, this embodiment of the application, in response to the thermal management condition being an engine preheating condition, generates a first control command. This first control command controls the electric diverter valve to simultaneously direct engine coolant to both the air heating circuit and the radiant heating circuit, controls the auxiliary heating device to be in the on state, and controls the air heating circuit actuator to be in the on state. For example, in a scenario where the vehicle is cold-started and the engine coolant temperature has not yet reached normal operating temperature, the controller recognizes that the current condition is engine preheating and immediately generates the first control command. This command drives the electric diverter valve to adjust to full opening or a specific angle, causing the engine coolant to be diverted to both the air heating circuit and the radiant heating circuit. Simultaneously, it commands the auxiliary heating device to be energized to provide additional heat and commands the air heating circuit actuator to start the blower, thereby rapidly increasing the cabin temperature through a combination of airflow and radiation.

[0081] Based on the above optional embodiments, this application embodiment generates a first control command in response to the thermal management condition for engine preheating. The first control command is used to control the electric diverter valve to make the engine coolant flow to both the air heating circuit and the radiant heating circuit simultaneously, control the auxiliary heating device to be in the on state, and control the air heating circuit actuator to be in the on state. This achieves the technical effect of rapidly increasing the cockpit temperature during the engine low-temperature start-up phase by working together with traditional air blowing, new radiant heating and PTC auxiliary heating.

[0082] Optionally, the vehicle thermal management control method further includes: in response to the engine coolant temperature entering a preset temperature range during engine preheating, controlling the output power of the auxiliary heating device to switch from a first power level to a second power level, and controlling the operating wind speed of the air heating circuit actuator to switch from a first wind speed level to a second wind speed level, wherein the second power level is lower than the first power level, and the second wind speed level is lower than the first wind speed level.

[0083] The aforementioned preset temperature range represents a specific temperature range used to determine the transition of the engine from the preheating stage to the normal operating stage. When the engine coolant temperature enters this range, it indicates that the engine's waste heat capacity has been initially established, and the system can begin to gradually reduce its dependence on auxiliary heat sources. For example, the preset temperature range can be set to 70°C to 80°C.

[0084] The aforementioned first power setting indicates the high-power heating state provided by the auxiliary heating device during the initial engine preheating stage, which is used to quickly increase the interior temperature when the engine waste heat is insufficient.

[0085] The aforementioned second power setting indicates the low power or standby heating state of the auxiliary heating device after the engine's waste heat capacity is enhanced. It is used to supplement or maintain heat when the engine's waste heat is the main source of heat, thereby reducing energy consumption.

[0086] The first fan speed setting mentioned above indicates that the air heating circuit actuator operates at a high fan speed during the initial stage of engine preheating in order to enhance air convection heat transfer and accelerate the warming up of the vehicle interior.

[0087] The second fan speed setting mentioned above indicates that the air heating circuit actuator operates at a low fan speed or low speed after the engine waste heat capacity is enhanced, in order to reduce blower noise and improve the quietness of the ride.

[0088] In this embodiment, in response to the engine coolant temperature entering a preset temperature range during engine preheating, the controller switches the output power of the auxiliary heating device from a first power level to a second power level, and controls the operating speed of the air-heating circuit actuator from a first fan speed level to a second fan speed level. The second power level is lower than the first power level, and the second fan speed level is lower than the first fan speed level. For example, when the vehicle is in engine preheating mode and the controller detects that the engine coolant temperature is gradually rising and entering the preset temperature range, the controller issues an adjustment command. This command first reduces the output energy of the auxiliary heating device, switching it from the first power level to the second power level, and simultaneously reduces the rotational speed of the air-heating circuit actuator, switching it from the first fan speed level to the second fan speed level. This reduces electric heating consumption and wind noise, gradually transitioning the heating mode to radiant heating primarily using engine waste heat.

[0089] Based on the above optional embodiments, this application embodiment, in response to the engine coolant temperature entering a preset temperature range during engine preheating, controls the output power of the auxiliary heating device to switch from a first power level to a second power level, and controls the operating wind speed of the air heating circuit actuator to switch from a first wind speed level to a second wind speed level, wherein the second power level is lower than the first power level and the second wind speed level is lower than the first wind speed level, achieves the technical effect of gradually reducing the auxiliary electric heating power and blower wind speed during the stage of enhanced engine waste heat capacity, thereby reducing energy consumption and improving driving quietness.

[0090] Optionally, determining the vehicle's thermal management condition based on operating status parameters includes: in response to an engine start-stop status indication that the engine is in operation and the engine coolant temperature is greater than or equal to a preset temperature threshold, determining the thermal management condition as an engine constant temperature condition.

[0091] When determining the vehicle's thermal management condition based on operating status parameters, this embodiment of the application responds to the engine start-stop status indicating that the engine is running, and the engine coolant temperature is greater than or equal to a preset temperature threshold, determining the thermal management condition as the engine constant temperature condition. For example, the controller monitors operating status parameters in real time. When it detects that the engine is running in the engine start-stop status and that the engine coolant temperature is greater than or equal to the preset temperature threshold, the controller logic determines that the current vehicle is in the engine constant temperature condition, thereby triggering a high-efficiency, quiet heating strategy for normal driving.

[0092] Based on the above optional embodiments, this application embodiment determines the thermal management condition as the engine constant temperature condition by responding to the engine start-stop state indication that the engine is in the running state and the engine coolant temperature is greater than or equal to a preset temperature threshold. This achieves accurate identification of the thermal management condition during the stage when the engine waste heat is sufficient, thereby providing a condition judgment basis for the system to switch to a low-energy consumption and high-comfort radiant heating mode.

[0093] Optionally, generating thermal management control commands based on thermal management conditions includes: generating a second control command in response to the thermal management condition being an engine constant temperature condition, wherein the second control command is used to control the electric diverter valve to adjust the flow distribution so that the coolant flow rate to the radiant heating circuit is greater than the coolant flow rate to the air heating circuit, control the auxiliary heating device to be in a closed state, and control the air heating circuit actuator to reduce speed or stop operation.

[0094] The aforementioned second control command indicates a specific control signal generated by the controller when the thermal management condition is determined to be the engine constant temperature condition. This signal is used to adjust the flow distribution of coolant in the dual circuits, shut down the auxiliary heat source, and reduce the output of the conventional air heater to achieve efficient and quiet heating.

[0095] When generating thermal management control commands based on thermal management conditions, this embodiment of the application, in response to the thermal management condition being an engine constant temperature condition, generates a second control command. This second control command controls the electric diverter valve to adjust the flow distribution, ensuring that the coolant flow to the radiant heating circuit is greater than the coolant flow to the air heating circuit, controls the auxiliary heating device to be in a closed state, and controls the air heating circuit actuator to reduce speed or stop operation. For example, in a scenario where the vehicle engine has warmed up and is in normal driving condition, the controller recognizes the current engine constant temperature condition and generates the second control command. This command drives the electric diverter valve to adjust its opening, increasing the proportion flowing to the radiant heating circuit and decreasing the proportion flowing to the air heating circuit. Simultaneously, it commands the auxiliary heating device to be powered off and shut down, and commands the air heating circuit actuator to reduce speed or stop completely, thereby shifting the main heating force to the windless radiant heating and eliminating blower noise.

[0096] Based on the above optional embodiments, this application embodiment generates a second control command in response to the thermal management condition of constant engine temperature. The second control command is used to control the electric diverter valve to adjust the flow distribution so that the coolant flow to the radiant heating circuit is greater than the coolant flow to the air heating circuit, control the auxiliary heating device to be in a closed state, and control the air heating circuit actuator to reduce speed or stop operation. This achieves the technical effect of prioritizing the use of radiant heating and eliminating wind noise during the stage when the engine waste heat is sufficient, thereby improving the quietness and comfort of driving.

[0097] Optionally, the vehicle thermal management control method further includes: in response to the vehicle's passenger compartment temperature reaching a target temperature under constant engine temperature conditions, controlling the electric diverter valve to block the flow of engine coolant to the air heating circuit and guiding the engine coolant to the radiant heating circuit, controlling the radiant heating circuit to maintain the passenger compartment temperature, and controlling the air heating circuit actuator to be in a closed state.

[0098] The above-mentioned passenger compartment temperature represents the current actual air temperature value inside the cockpit. This value reflects the real-time status of the thermal environment inside the vehicle and is used to determine whether it meets the comfort needs of the occupants.

[0099] The target temperature mentioned above represents the desired interior temperature value set by the occupant on the air conditioning control panel. This value represents the user's subjective requirements for thermal comfort inside the vehicle.

[0100] In this embodiment, in response to the vehicle's passenger compartment temperature reaching a target temperature under constant engine operating conditions, the controller controls an electric diverter valve to block the flow of engine coolant to the air heating circuit and directs the engine coolant to the radiant heating circuit. The radiant heating circuit is controlled to maintain the passenger compartment temperature, and the air heating circuit actuator is controlled to be in a closed state. For example, in a scenario where the vehicle engine has warmed up and is in normal driving condition, the controller detects that the passenger compartment temperature has risen to the target temperature set by the occupants and generates a control command. This command drives the electric diverter valve to completely close the passage to the air heating circuit, causing all or most of the engine coolant to flow to the radiant heating circuit. Simultaneously, the air heating circuit actuator is instructed to completely stop working, thereby completely eliminating draft noise and relying solely on the continuous heat provided by the radiant heating circuit to compensate for the vehicle's heat loss and maintain a constant interior temperature.

[0101] Based on the above optional embodiments, this application embodiment achieves the technical effect of switching to a windless radiant constant temperature mode after the vehicle's passenger compartment temperature reaches the target temperature under constant engine temperature conditions, thereby eliminating blower noise and improving driving quietness. This is achieved by controlling the electric diverter valve to block the flow of engine coolant to the air heating circuit and guiding the engine coolant to the radiant heating circuit in response to the engine constant temperature condition and the passenger compartment temperature reaching the target temperature, and controlling the air heating circuit actuator to be in the closed state.

[0102] Optionally, determining the vehicle's thermal management condition based on operating status parameters includes: in response to an engine start-stop status indication that the engine is in a stopped state, determining the thermal management condition as an engine shutdown condition.

[0103] When determining the vehicle's thermal management condition based on operating status parameters, this embodiment of the application responds to the engine start-stop status indication that the engine is in a stopped state, and determines the thermal management condition as an engine shutdown condition. For example, the controller monitors the engine start-stop status signal in the operating status parameters in real time. When the controller detects that the signal indicates the engine has stopped running, the controller logic determines that the current vehicle is in an engine shutdown condition, thereby triggering a heating strategy for hybrid pure electric mode or during engine shutdown to ensure the continuity of the heat source.

[0104] Based on the above optional embodiments, this application embodiment determines the thermal management condition as the engine shutdown condition by responding to the engine start-stop state indication that the engine is in a stopped state. This achieves accurate identification of the thermal management condition during the engine shutdown phase, thereby providing a condition judgment basis for the system to switch to auxiliary heating mode to maintain heating continuity.

[0105] Optionally, generating thermal management control instructions based on thermal management conditions includes: generating a third control instruction in response to the thermal management condition being an engine shutdown condition, wherein the third control instruction is used to control the electric diverter valve to block the flow of engine coolant to the air heating circuit and guide the flow of engine coolant to the radiant heating circuit, control the auxiliary heating device to be in the on state, and control the air heating circuit actuator to be in the off state.

[0106] The aforementioned third control command represents a specific control signal generated by the controller when the thermal management condition is determined to be an engine shutdown condition. This signal is used to cut off the engine waste heat supply, start the auxiliary heat source, and configure the system to provide heat only through the radiant heating circuit to solve the problem of heat source interruption when the engine is shut down.

[0107] When generating thermal management control commands based on thermal management conditions, this embodiment of the application, in response to an engine-off thermal management condition, generates a third control command. This third control command controls the electric diverter valve to block the flow of engine coolant to the air-heating circuit and guides the engine coolant to the radiant heating circuit. It also controls the auxiliary heating device to be on and the air-heating circuit actuator to be off. For example, in a scenario where the vehicle engine is off, such as in a hybrid mode pure electric driving scenario, the controller recognizes the current engine-off condition and generates the third control command. This command drives the electric diverter valve to cut off the passage to the air-heating circuit, preventing unnecessary resistance or leakage risk to the coolant on the side of the stopped engine, while guiding the fluid to the radiant heating circuit. Simultaneously, it commands the auxiliary heating device to be energized to provide heat to the radiant heating circuit and commands the air-heating circuit actuator to stop working. Thus, without engine waste heat, the interior temperature is maintained through PTC auxiliary heating and radiant heating, ensuring a comfortable, draft-free experience.

[0108] Based on the above optional embodiments, this application embodiment generates a third control command in response to the thermal management condition of engine shutdown. The third control command is used to control the electric diverter valve to block the flow of engine coolant to the air heating circuit and guide the engine coolant to the radiant heating circuit. It also controls the auxiliary heating device to be in the on state and controls the air heating circuit actuator to be in the off state. This achieves the technical effect of providing continuous and quiet heating through the auxiliary heating device and radiant heating circuit during engine shutdown, thereby solving the problem of heat source interruption in hybrid vehicles and improving the comfort of pure electric driving.

[0109] Optionally, the vehicle thermal management control system further includes an electric circulation pump, which is installed in the radiant heating circuit. The vehicle thermal management control method further includes starting the electric circulation pump when the engine is off to drive the engine coolant to form an independent circulation circuit between the auxiliary heating device and the radiant heating circuit.

[0110] The aforementioned electric circulating pump refers to a dedicated small electric water pump connected in series in the radiant heating circuit. It is used to provide fluid power when the engine is not running, driving the coolant to circulate between the auxiliary heating device and the radiant heating circuit in a forced manner.

[0111] The aforementioned independent circulation loop refers to a closed fluid circulation path driven by an electric circulation pump, formed only between the auxiliary heating device and the radiant heating circuit. This path is physically isolated from the engine's main cooling system, ensuring that heat can be continuously and effectively transferred to the radiant heating components when the engine is off.

[0112] In this embodiment, when the engine is off, an electric circulation pump is activated to drive the engine coolant to form an independent circulation loop between the auxiliary heating device and the radiant heating circuit. For example, in a scenario where the vehicle engine is off, such as in a hybrid mode pure electric driving scenario, the controller recognizes the current engine-off condition and immediately sends a command to activate the electric circulation pump. The electric circulation pump starts operating, causing coolant to flow from the auxiliary heating device, exchange heat through the distributed radiant panels in the radiant heating circuit, and then return to the auxiliary heating device, forming a closed small loop independent of the engine water pump, thereby ensuring a continuous supply of heat generated by the auxiliary heating device to the vehicle interior.

[0113] Based on the above optional embodiments, this application embodiment achieves the technical effect of establishing a closed heat transfer path without the engine water pump driving by starting an electric circulation pump when the engine is stopped, thereby driving the engine coolant to form an independent circulation loop between the auxiliary heating device and the radiant heating circuit. This ensures that the heat generated by the auxiliary heating can be continuously and stably delivered to the radiant heating component, thus guaranteeing the continuity and stability of heating in hybrid mode.

[0114] Optionally, the thermal management control method further includes: in response to detecting that the engine start-stop state has switched from a stopped state to an operating state, controlling the electric diverter valve to adjust the flow distribution so that the coolant flow to the air heating circuit is greater than the coolant flow to the radiant heating circuit, controlling the auxiliary heating device to remain on until the engine coolant temperature reaches a preset temperature threshold, and controlling the air heating circuit actuator to switch from a closed state to a target operating wind speed.

[0115] The target operating wind speed mentioned above represents the airflow velocity value corresponding to a specific blower speed set by the air-heating circuit actuator during the initial engine start-up phase to quickly increase the cabin temperature. This wind speed value is typically higher than the silent wind speed during normal operation, designed to accelerate the heat exchange efficiency between the heater core and the cabin air by increasing airflow, thereby providing a larger heating capacity in a short time.

[0116] In this embodiment, in response to detecting a change in engine start-stop state from a stopped state to an operating state, the controller adjusts the flow distribution of the electric diverter valve to ensure that the coolant flow to the air heating circuit is greater than the coolant flow to the radiant heating circuit. The controller also keeps the auxiliary heating device on until the engine coolant temperature reaches a preset temperature threshold, and controls the air heating circuit actuator to switch from a closed state to the target operating fan speed. For example, in a scenario where the vehicle switches from hybrid mode back to fuel or range-extender mode (i.e., from engine off to engine on), the controller detects the change in engine start-stop state and generates a control command. This command drives the electric diverter valve to adjust its opening, increasing the proportion of coolant flowing to the air heating circuit and decreasing the proportion flowing to the radiant heating circuit. Simultaneously, it instructs the auxiliary heating device to remain on to provide additional heat and instructs the air heating circuit actuator to start and operate at the target fan speed. This utilizes the rapid response capability of the air heating circuit and the high-temperature heat source of the auxiliary heating device to quickly raise the cabin temperature, compensating for insufficient waste heat during the initial cold start of the engine.

[0117] Based on the above optional embodiments, this application embodiment, in response to detecting that the engine start-stop state has switched from a stopped state to a running state, controls the electric diverter valve to adjust the flow distribution so that the coolant flow to the air heating circuit is greater than the coolant flow to the radiant heating circuit, controls the auxiliary heating device to remain on until the engine coolant temperature reaches a preset temperature threshold, and controls the air heating circuit actuator to switch from a closed state to the target operating wind speed. This achieves the technical effect of accelerating the warming speed of the vehicle interior and improving cold start thermal comfort by enhancing traditional air heating and maintaining auxiliary heating in the early stage of engine start-up.

[0118] Optionally, the electric diverter valve is an electric three-way proportional valve, and the thermal management control method further includes: calculating the target opening degree of the electric three-way proportional valve based on the difference between the engine coolant temperature and the preset temperature threshold, and the difference between the passenger compartment temperature and the target temperature; and adjusting the coolant flow ratio to the air heating circuit and the radiant heating circuit according to the target opening degree.

[0119] The aforementioned electric three-way proportional valve is a type of valve that can continuously adjust the fluid flow area according to the control signal. Compared with on / off valves, it can achieve stepless flow regulation, thereby accurately controlling the proportion of coolant flow distributed to different circuits to match different heat demands.

[0120] The target opening degree mentioned above represents the degree of valve opening required for the electric three-way proportional valve to achieve the expected flow distribution ratio. This value is calculated by a preset control algorithm and is used to guide the specific action position of the valve actuator.

[0121] The aforementioned coolant flow rate ratio represents the relative relationship between the coolant mass flow rate to the air heating circuit and the coolant mass flow rate to the radiant heating circuit, and is typically adjusted by the opening of an electrically operated three-way proportional valve. This ratio determines the weighting of the total waste heat generated by the engine between the air heating mode and the radiant heating mode. When the flow rate ratio to the air heating circuit is higher, the system tends to use the blower for rapid convection heating. When the flow rate ratio to the radiant heating circuit is higher, the system tends to use distributed radiant panels for windless radiant heating.

[0122] In determining the coolant flow ratio between the air heating circuit and the radiant heating circuit, this embodiment first calculates the target opening degree of the electric three-way proportional valve based on the difference between the engine coolant temperature and a preset temperature threshold, and the difference between the passenger compartment temperature and the target temperature. For example, during vehicle operation, the controller collects the engine coolant temperature and passenger compartment temperature in real time. The controller compares the actual temperature fed back by the engine coolant temperature sensor with the preset temperature threshold to calculate a first error value, which reflects the availability and sufficiency of engine waste heat. Simultaneously, the controller compares the actual temperature fed back by the passenger compartment temperature sensor with the user-set target temperature to calculate a second error value, which reflects the current heat load demand and comfort gap in the passenger compartment. Subsequently, the controller uses the first and second error values ​​as input parameters, substitutes them into a preset multivariate control model, such as a proportional-integral-derivative (PID) algorithm or a fuzzy logic-based adaptive control algorithm, and calculates the target opening degree of the electric three-way proportional valve through weighted processing or table lookup matching.

[0123] Then, the coolant flow ratio to the air heating circuit and the radiant heating circuit is adjusted according to the target opening degree. For example, the controller drives the electric three-way proportional valve to adjust to the target opening degree, thereby precisely regulating the coolant flow rate into the air heating circuit and the coolant flow rate into the radiant heating circuit to achieve a dynamic balance between the two heating methods.

[0124] Based on the above optional embodiments, this application embodiment calculates the target opening degree of the electric three-way proportional valve according to the difference between the engine coolant temperature and the preset temperature threshold, and the difference between the passenger compartment temperature and the target temperature. Based on the target opening degree, it adjusts the coolant flow ratio to the air heating circuit and the radiant heating circuit, thereby realizing dual feedback control based on the engine waste heat state and the passenger heat demand. This optimizes the dual-circuit flow distribution and improves the response accuracy and energy efficiency of the thermal management system.

[0125] According to another aspect of the embodiments of this application, a vehicle thermal management control system is also provided. The system includes: an engine, an electric diverter valve, a warm air circuit actuator, an auxiliary heating device, and a controller. The electric diverter valve is used to divert engine coolant to the warm air circuit and the radiant heating circuit. The controller is configured to execute the vehicle thermal management control method of the embodiments of this application.

[0126] The aforementioned controller represents the central processing unit of the vehicle thermal management system, which is configured to execute the vehicle thermal management control method in the embodiments of this application, for receiving sensor signals, running control algorithms, and sending commands to control the electric diverter valve, the air heating circuit actuator, and the auxiliary heating device.

[0127] In the vehicle thermal management control system, the electric diverter valve undertakes the physical diversion task, changing the opening of its internal channels according to the controller's instructions to determine the flow direction and flow distribution of the engine coolant. The controller, as the core control unit, internally stores the control logic described in the embodiments of this application, and is responsible for processing information such as engine status and temperature feedback, and generating control signals to drive the actuators, thereby achieving automated system operation.

[0128] Based on the above optional embodiments, the vehicle thermal management control system of this application includes an engine, an electric diverter valve, a warm air circuit actuator, an auxiliary heating device, and a controller. The electric diverter valve is used to divert engine coolant to the warm air circuit and the radiant heating circuit. The controller is configured to execute the vehicle thermal management control method of this application embodiment, realizing a clear correspondence between hardware architecture and control logic, laying the foundation for the implementation of the intelligent thermal management system, and thus providing a structural guarantee for the system to execute complex flow distribution and mode switching strategies.

[0129] Optionally, the inlet of the electric diverter valve is connected to the coolant outlet of the engine, the first outlet of the electric diverter valve is connected to the water inlet of the air heating circuit through the first branch pipe, and the second outlet of the electric diverter valve is connected to the water inlet of the radiant heating circuit through the second branch pipe.

[0130] The coolant outlet of the aforementioned engine refers to the coolant outlet port on the engine block or cylinder head, where high-temperature coolant collects and leaves the engine body to enter the downstream thermal management piping system.

[0131] The aforementioned first outlet refers to the fluid output port on the electric three-way proportional valve used to connect to the air-heating circuit. When the electric diverter valve adjusts its opening, this outlet directs a portion of the high-temperature coolant to the first branch pipe, which is then delivered to the inlet of the air-heating circuit to support the traditional blower heating mode.

[0132] The aforementioned first branch pipe refers to the connecting pipe section between the electric diverter valve and the water inlet of the air heating circuit, which is used to guide a portion of the high-temperature coolant into the air heating circuit to drive the conventional blower heating process.

[0133] The water inlet of the aforementioned air heating circuit indicates the coolant inlet of the heater core or other heat exchange elements in the air heating circuit. The high-temperature coolant enters from this point and exchanges heat with the air blown by the blower, sending the heat into the cockpit.

[0134] The aforementioned second outlet refers to the fluid output port on the electric three-way proportional valve used to connect to the radiant heating circuit. When the electric diverter valve adjusts its opening, this outlet directs a portion of the high-temperature coolant to the second branch pipe, which is then delivered to the inlet of the radiant heating circuit to support the distributed radiant panel heating mode.

[0135] The aforementioned second branch pipeline refers to the connecting pipe section between the electric diversion valve and the inlet of the radiant heating circuit, which is used to guide a portion of the high-temperature coolant into the radiant heating circuit to drive the distributed radiant panel heating process.

[0136] The water inlet of the aforementioned radiant heating circuit represents the coolant inlet of the distributed radiant panel assembly in the radiant heating circuit. The high-temperature coolant enters the microchannels inside the radiant panel from this point and radiates far-infrared heat to the cockpit through the surface of the radiant panel.

[0137] In the vehicle's thermal management control system, the high-temperature coolant generated by the engine flows out of the coolant outlet and first enters the inlet of the electric diverter valve. Subsequently, according to control commands, the electric diverter valve discharges coolant from its first and second outlets respectively. The coolant from the first outlet is delivered to the inlet of the air-heating circuit via a first branch pipe, and the coolant from the second outlet is delivered to the inlet of the radiant heating circuit via a second branch pipe. This connection method establishes a fluid channel from a single heat source to two parallel heating circuits.

[0138] Based on the above optional embodiments, this application embodiment connects the inlet of the electric diverter valve to the coolant outlet of the engine, the first outlet of the electric diverter valve is connected to the water inlet of the air heating circuit through the first branch pipe, and the second outlet of the electric diverter valve is connected to the water inlet of the radiant heating circuit through the second branch pipe. This realizes the physical diversion architecture of engine coolant between the air heating circuit and the radiant heating circuit, and provides a basic fluid channel guarantee for dual-circuit coordinated heating.

[0139] Optionally, the vehicle thermal management control system also includes an electric circulation pump connected in series in the radiant heating circuit to drive the engine coolant to form an independent circulation loop between the auxiliary heating device and the radiant heating circuit when the engine is off.

[0140] The aforementioned electric circulation pump is connected in series in the radiant heating circuit to drive the engine coolant to form an independent circulation loop between the auxiliary heating device and the radiant heating circuit when the engine is off. For example, when the vehicle enters the engine-off state, the system control logic activates the electric circulation pump. The electric circulation pump generates fluid pressure, pushing the coolant out of the auxiliary heating device, through the distributed radiant panels in the radiant heating circuit for heat exchange, absorbing heat and returning to the auxiliary heating device for reheating. During this process, this loop is isolated from the engine main circuit through components such as an electric diverter valve, or exists only as a bypass, but with an independent power source, forming a closed small loop that does not rely on the engine's main water pump. This process ensures that even when engine waste heat is absent, heat can still be continuously transferred to the radiant panels, achieving uninterrupted heating inside the vehicle.

[0141] Based on the above optional embodiments, the vehicle thermal management control system of this application also includes an electric circulation pump, which is connected in series in the radiant heating circuit. It is used to drive the engine coolant to form an independent circulation circuit between the auxiliary heating device and the radiant heating circuit when the engine is stopped. This achieves the technical effect of maintaining the thermal circulation of the radiant heating circuit through an independent power source when the engine waste heat is interrupted, thereby ensuring the continuity of heating.

[0142] In an optional embodiment, the radiant heating circuit of this application employs a radiant panel body and circuit auxiliary components with specific structural features. Specifically, the radiant panel body uses aluminum alloy microchannel flat tubes as the substrate, which are integrally formed with a metal panel with a high emissivity coating through vacuum brazing. The microchannel design increases the contact area with the coolant, thereby improving heat exchange efficiency. The radiant panel is designed as a flexible and bendable modular unit, which can be distributed and laid out according to irregular spaces such as under the cockpit floor, seat sides, and footwells. The modules are connected by quick-connect stainless steel corrugated hoses for easy installation and maintenance. The panel surface is specially treated to efficiently and evenly dissipate heat in the form of far-infrared radiation, achieving a comfortable heating experience that warms the feet from the floor upwards.

[0143] Regarding the auxiliary structure of the circuit, a small electric ball valve is added at the inlet of the radiant panel circuit. The controller precisely adjusts the flow rate of coolant into the radiant panel according to the temperature requirements of the passenger compartment and the engine status, achieving precise temperature control. At the same time, a heat-insulating air cavity with a low thermal conductivity is designed between the radiant panel and the vehicle chassis to effectively prevent heat loss downwards and improve heat utilization efficiency.

[0144] This application embodiment achieves high heat exchange efficiency, flexible installation, precise flow control, and low heat loss in the distributed radiant heating circuit by adopting an integrated molding of aluminum alloy microchannel flat tube and high emissivity coated panel, flexible and bendable modular unit and quick-connect structure, as well as the design of inlet electric ball valve and bottom heat insulation air cavity.

[0145] In an optional embodiment, this application embodiment uses a liquid-heating PTC heater with a rated power of 3kW in terms of the structure and integration features of the auxiliary heating device. The heater consists of a PTC ceramic heating element, metal heat dissipation fins and a sealed liquid flow channel. The coolant flows directly through the interior of the PTC heater and is rapidly heated. Compared with the 6-8kW PTC used for main heating in pure electric vehicles, this application embodiment has lower power and better cost and energy consumption.

[0146] In terms of integration, the auxiliary PTC heater is connected in series in the radiant heating circuit, specifically after the electric diverter valve and before the radiant panel, so that the auxiliary PTC heater only serves the radiant panel circuit and avoids interference with the engine's main cooling system.

[0147] In terms of operating logic, when the engine is running, the high-temperature coolant flows through the electric diverter valve into the radiant heating circuit. At this time, the auxiliary PTC heater is in bypass or low-power standby mode and does not participate in heating. When the engine stops and enters hybrid mode, the electric diverter valve closes the path to the engine and simultaneously starts the auxiliary PTC heater. At this time, a small electric circulation pump designed specifically for the PTC circuit starts, driving the coolant to flow in the closed small loop of "auxiliary PTC heater → radiant heating circuit → small electric circulation pump". The auxiliary PTC heater provides the heat source for the radiant heating circuit.

[0148] This application embodiment achieves the technical effect of providing an independent heat source for the radiant heating circuit when the engine is off by using a low-power liquid-heated PTC heater, integrating it in series in the radiant heating circuit, and constructing a closed small loop with a dedicated small electric circulating pump.

[0149] Figure 2 This is a schematic diagram of an optional vehicle thermal management control method according to an embodiment of this application, such as... Figure 2 As shown. After the vehicle starts, the controller first checks the engine coolant temperature to determine if it is below a set threshold. If the coolant temperature is below the set threshold, the system enters a rapid heating mode, activates the auxiliary heating device, and adjusts the electric three-way proportional valve to allow coolant to flow simultaneously to both the radiant heating circuit and the fan heating circuit. At the same time, the fan heating circuit actuator is activated to achieve coordinated rapid heating from both the traditional blower and the radiant panels.

[0150] If the water temperature is not lower than the set threshold, the engine is in normal operating condition. The system adjusts the electric three-way proportional valve to direct coolant flow to the radiant heating circuit. The controller then determines whether additional heating is needed. If so, it keeps the air heater circuit actuator running at high speed to facilitate rapid heating. If not, it shuts off or reduces the airflow of the air heater circuit actuator.

[0151] Once the water temperature has risen, the controller determines whether to continue heating. If not, it shuts off the auxiliary heating device, maintaining the temperature solely through the radiant heating system. If so, it adjusts the opening of the electric three-way proportional valve and the power of the auxiliary heating device based on the water temperature. When determining if the engine is running, if the engine is running, the system gradually transitions to primarily using engine waste heat, adjusting the electric three-way proportional valve and auxiliary heating device according to the water temperature to intelligently switch heating modes. If the engine is not running, i.e., in hybrid or pure electric mode, the system activates the auxiliary heating device to maintain uninterrupted heating and ensures that the coolant primarily flows to the radiant heating circuit by adjusting the electric three-way proportional valve. Simultaneously, it reduces or shuts off the airflow of the fan heating circuit actuator as needed, thereby achieving an optimal balance between comfort and energy efficiency.

[0152] This embodiment detects the water temperature after vehicle startup and dynamically adjusts the working status of the electric three-way proportional valve, auxiliary heating device, and air heating circuit actuator based on the water temperature threshold, engine status, and continuous heating requirements. This achieves intelligent switching from rapid heating to comfortable constant temperature and then to uninterrupted heating in hybrid mode, thus balancing the technical effects of cold start heating speed, operating comfort, and energy utilization efficiency.

[0153] Figure 3 This is a schematic diagram of another optional vehicle thermal management control method according to an embodiment of this application, such as... Figure 3 As shown. The method includes:

[0154] Step S301: Obtain the engine's operating status parameters, including: engine coolant temperature and engine start / stop status;

[0155] Step S302: Determine the vehicle's thermal management condition based on the operating status parameters. The thermal management condition includes one of the following: engine preheating condition, engine constant temperature condition, or engine shutdown condition.

[0156] Step S303: In response to the engine start-stop status indication that the engine is in operation and the engine coolant temperature is less than a preset temperature threshold, the thermal management condition is determined to be the engine preheating condition.

[0157] Step S304: In response to the thermal management condition being the engine preheating condition, a first control command is generated, wherein the first control command is used to control the electric diverter valve to make the engine coolant flow to both the air heating circuit and the radiant heating circuit simultaneously, control the auxiliary heating device to be in the open state, and control the air heating circuit actuator to be in the open state.

[0158] Step S305: In response to the engine start-stop status indication that the engine is in operation and the engine coolant temperature is greater than or equal to a preset temperature threshold, the thermal management condition is determined to be the engine constant temperature condition.

[0159] Step S306: In response to the thermal management condition being the engine constant temperature condition, a second control command is generated. The second control command is used to control the electric diverter valve to adjust the flow distribution so that the coolant flow to the radiant heating circuit is greater than the coolant flow to the air heating circuit, control the auxiliary heating device to be in the off state, and control the air heating circuit actuator to reduce speed or stop operation.

[0160] Step S307: In response to the engine start-stop status indication that the engine is in a stopped state, determine the thermal management condition as the engine shutdown condition;

[0161] In step S308, in response to the thermal management condition being an engine shutdown condition, a third control command is generated. The third control command is used to control the electric diverter valve to block the flow of engine coolant to the air heating circuit and guide the engine coolant to the radiant heating circuit, control the auxiliary heating device to be in the on state, and control the air heating circuit actuator to be in the off state.

[0162] Based on the above steps S301 to S308, this application embodiment adopts a multi-condition collaborative thermal management control strategy based on engine operating status parameters. By acquiring the engine coolant temperature and start / stop status, the preheating, constant temperature, or shutdown conditions are determined, and collaborative control commands are generated to synchronously adjust the working status of the electric diverter valve, the air heating circuit actuator, and the auxiliary heating device. This achieves the purpose of intelligently distributing engine waste heat under different thermal management conditions, coordinating traditional blowing and radiant heating modes, and ensuring continuous heating. This achieves the technical effects of improving heating comfort, reducing noise, and ensuring continuous heating, thereby solving the technical problems of poor comfort, high noise, and heating interruption in related vehicle thermal management control methods.

[0163] Figure 4 This is a structural block diagram of an optional vehicle thermal management control device according to an embodiment of this application, such as... Figure 4As shown. The vehicle thermal management control device is applied to the vehicle thermal management control system. The system includes: an engine, an electric diverter valve, a warm air circuit actuator, and an auxiliary heating device. The electric diverter valve is used to divert engine coolant to the warm air circuit and the radiant heating circuit. The device includes: an acquisition module 401, used to acquire engine operating status parameters, including engine coolant temperature and engine start / stop status; a determination module 402, used to determine the vehicle's thermal management condition based on the operating status parameters, including one of the following: engine preheating condition, engine constant temperature condition, or engine shutdown condition; a generation module 403, used to generate thermal management control commands based on the thermal management condition, wherein the thermal management control commands are used to coordinate the control of the electric diverter valve, the warm air circuit actuator, and the auxiliary heating device; and a control module 404, used to execute thermal management control operations using the thermal management control commands.

[0164] Optionally, the determining module 402 is further configured to: in response to an engine start-stop state indication that the engine is in operation and the engine coolant temperature is less than a preset temperature threshold, determine the thermal management condition as the engine preheating condition.

[0165] Optionally, the generation module 403 is further configured to: generate a first control command in response to the thermal management condition of engine preheating, wherein the first control command is used to control the electric diverter valve to allow engine coolant to flow simultaneously to the air heating circuit and the radiant heating circuit, control the auxiliary heating device to be in the on state, and control the air heating circuit actuator to be in the on state.

[0166] Optionally, the control module 404 is further configured to: in response to the engine coolant temperature entering a preset temperature range during engine preheating, control the output power of the auxiliary heating device to switch from a first power level to a second power level, and control the operating wind speed of the air heating circuit actuator to switch from a first wind speed level to a second wind speed level, wherein the second power level is lower than the first power level and the second wind speed level is lower than the first wind speed level.

[0167] Optionally, the determining module 402 is further configured to: in response to an engine start-stop state indication that the engine is in operation and the engine coolant temperature is greater than or equal to a preset temperature threshold, determine the thermal management condition as the engine constant temperature condition.

[0168] Optionally, the generation module 403 is further configured to: generate a second control command in response to the thermal management condition being the engine constant temperature condition, wherein the second control command is used to control the electric diverter valve to adjust the flow distribution so that the coolant flow to the radiant heating circuit is greater than the coolant flow to the air heating circuit, control the auxiliary heating device to be in a closed state, and control the air heating circuit actuator to reduce speed or stop operation.

[0169] Optionally, the control module 404 is also configured to: in response to the vehicle's passenger compartment temperature reaching the target temperature under constant engine temperature conditions, control the electric diverter valve to block the flow of engine coolant to the air heating circuit and guide the engine coolant to the radiant heating circuit, control the radiant heating circuit to maintain the passenger compartment temperature, and control the air heating circuit actuator to be in the closed state.

[0170] Optionally, the determining module 402 is further configured to: determine the thermal management condition as the engine shutdown condition in response to an engine start-stop state indication that the engine is in a stopped state.

[0171] Optionally, the generation module 403 is further configured to: generate a third control command in response to the thermal management condition being an engine shutdown condition, wherein the third control command is configured to control the electric diverter valve to block the flow of engine coolant to the air heating circuit and guide the engine coolant to the radiant heating circuit, control the auxiliary heating device to be in the on state, and control the air heating circuit actuator to be in the off state.

[0172] Optionally, the vehicle thermal management control system further includes an electric circulation pump, which is installed in the radiant heating circuit. The vehicle thermal management control device also includes a drive module for starting the electric circulation pump when the engine is off, so as to drive the engine coolant to form an independent circulation circuit between the auxiliary heating device and the radiant heating circuit.

[0173] Optionally, the control module 404 is further configured to: in response to detecting that the engine start-stop state has switched from a stopped state to an operating state, control the electric diverter valve to adjust the flow distribution so that the coolant flow to the air heating circuit is greater than the coolant flow to the radiant heating circuit, control the auxiliary heating device to remain on until the engine coolant temperature reaches a preset temperature threshold, and control the air heating circuit actuator to switch from a closed state to the target operating wind speed.

[0174] Optionally, the electric diverter valve is an electric three-way proportional valve, and the thermal management control device further includes: a calculation module for calculating the target opening degree of the electric three-way proportional valve based on the difference between the engine coolant temperature and the preset temperature threshold, and the difference between the passenger compartment temperature and the target temperature; and an adjustment module for adjusting the coolant flow ratio to the air heating circuit and the radiant heating circuit based on the target opening degree.

[0175] It should be noted that the user information (including but not limited to user device information, user personal information, etc.) and data (including but not limited to data used for analysis, data stored, data displayed, etc.) involved in this application are all information and data authorized by the user or fully authorized by all parties. Furthermore, the collection, use and processing of the relevant data must comply with the relevant laws, regulations and standards of the relevant countries and regions, and corresponding operation entry points are provided for users to choose to authorize or refuse.

[0176] Figure 5 This is a schematic diagram of an optional vehicle according to an embodiment of this application, such as... Figure 5 As shown. The vehicle includes: a memory 501 storing an executable program; and a processor 502 for running the program, wherein the program executes the methods described in various embodiments of this application during runtime.

[0177] The system acquires engine operating status parameters, including engine coolant temperature and engine start / stop status; determines the vehicle's thermal management condition based on these parameters, including one of the following: engine preheating, engine constant temperature, or engine shutdown; generates thermal management control commands based on the thermal management condition, which are used to coordinate the operation of the electric diverter valve, the air heating circuit actuator, and the auxiliary heating device; and executes thermal management control operations using the thermal management control commands.

[0178] Embodiments of this application also provide a computer-readable storage medium, which includes a stored executable program, wherein, when the executable program is executed, it controls the device where the computer-readable storage medium is located to perform the methods of various embodiments of this application:

[0179] The system acquires engine operating status parameters, including engine coolant temperature and engine start / stop status; determines the vehicle's thermal management condition based on these parameters, including one of the following: engine preheating, engine constant temperature, or engine shutdown; generates thermal management control commands based on the thermal management condition, which are used to coordinate the operation of the electric diverter valve, the air heating circuit actuator, and the auxiliary heating device; and executes thermal management control operations using the thermal management control commands.

[0180] Embodiments of this application also provide a computer program product, including a computer program that, when executed by a processor, implements the methods of various embodiments of this application:

[0181] The system acquires engine operating status parameters, including engine coolant temperature and engine start / stop status; determines the vehicle's thermal management condition based on these parameters, including one of the following: engine preheating, engine constant temperature, or engine shutdown; generates thermal management control commands based on the thermal management condition, which are used to coordinate the operation of the electric diverter valve, the air heating circuit actuator, and the auxiliary heating device; and executes thermal management control operations using the thermal management control commands.

[0182] Embodiments of this application also provide a computer program product, including a non-volatile computer-readable storage medium for storing a computer program, which, when executed by a processor, implements the methods of various embodiments of this application.

[0183] The system acquires engine operating status parameters, including engine coolant temperature and engine start / stop status; determines the vehicle's thermal management condition based on these parameters, including one of the following: engine preheating, engine constant temperature, or engine shutdown; generates thermal management control commands based on the thermal management condition, which are used to coordinate the operation of the electric diverter valve, the air heating circuit actuator, and the auxiliary heating device; and executes thermal management control operations using the thermal management control commands.

[0184] Embodiments of this application also provide a computer program that, when executed by a processor, implements the methods described in the various embodiments of this application above:

[0185] The system acquires engine operating status parameters, including engine coolant temperature and engine start / stop status; determines the vehicle's thermal management condition based on these parameters, including one of the following: engine preheating, engine constant temperature, or engine shutdown; generates thermal management control commands based on the thermal management condition, which are used to coordinate the operation of the electric diverter valve, the air heating circuit actuator, and the auxiliary heating device; and executes thermal management control operations using the thermal management control commands.

[0186] In the above embodiments of this application, the descriptions of each embodiment have different focuses. For parts not described in detail in a certain embodiment, please refer to the relevant descriptions of other embodiments.

[0187] In the several embodiments provided in this application, it should be understood that the disclosed technical content can be implemented in other ways. The device embodiments described above are merely illustrative; for example, the division of units can be a logical functional division, and in actual implementation, there may be other division methods. For instance, multiple units or components may be combined or integrated into another system, or some features may be ignored or not executed. Furthermore, the displayed or discussed mutual coupling, direct coupling, or communication connection may be through some interfaces; the indirect coupling or communication connection between units or modules may be electrical or other forms.

[0188] The units described as separate components may or may not be physically separate. The components shown as units may or may not be physical units; that is, they may be located in one place or distributed across multiple units. Some or all of the units can be selected to achieve the purpose of this embodiment according to actual needs.

[0189] Furthermore, the functional units in the various embodiments of this application can be integrated into one processing unit, or each unit can exist physically separately, or two or more units can be integrated into one unit. The integrated unit can be implemented in hardware or as a software functional unit.

[0190] If the integrated unit is implemented as a software functional unit and sold or used as an independent product, it can be stored in a computer-readable storage medium. Based on this understanding, the technical solution of this application, in essence, or the part that contributes to the prior art, or all or part of the technical solution, can be embodied in the form of a software product. This computer software product is stored in a storage medium and includes several instructions to cause a computer device (which may be a personal computer, server, or network device, etc.) to execute all or part of the steps of the methods described in the various embodiments of this application. The aforementioned storage medium includes various media capable of storing program code, such as USB flash drives, read-only memory (ROM), random access memory (RAM), portable hard drives, magnetic disks, or optical disks.

[0191] The above description is only a preferred embodiment of this application. It should be noted that for those skilled in the art, several improvements and modifications can be made without departing from the principle of this application, and these improvements and modifications should also be considered within the scope of protection of this application.

Claims

1. A vehicle thermal management control method, characterized in that, An application is made in a vehicle thermal management control system, the system comprising: an engine, an electric diverter valve, a warm air circuit actuator, and an auxiliary heating device, wherein the electric diverter valve is used to divert engine coolant to the warm air circuit and the radiant heating circuit, and the method comprises: The operating status parameters of the engine are obtained, wherein the operating status parameters include: engine coolant temperature and engine start / stop status; The thermal management condition of the vehicle is determined based on the operating status parameters, wherein the thermal management condition includes one of the following: engine preheating condition, engine constant temperature condition, or engine shutdown condition. A thermal management control command is generated based on the thermal management operating conditions, wherein the thermal management control command is used to coordinate the operation of the electric diversion valve, the air heating circuit actuator and the auxiliary heating device; The thermal management control operation is executed using the thermal management control command.

2. The vehicle thermal management control method according to claim 1, characterized in that, Determining the thermal management condition of the vehicle based on the aforementioned operating status parameters includes: In response to the engine start-stop status indicating that the engine is in operation and the engine coolant temperature is less than a preset temperature threshold, the thermal management condition is determined to be the engine preheating condition.

3. The vehicle thermal management control method according to claim 2, characterized in that, The thermal management control command generated based on the thermal management operating conditions includes: In response to the thermal management condition being the engine preheating condition, a first control command is generated, wherein the first control command is used to control the electric diverter valve to allow the engine coolant to flow simultaneously to the air heating circuit and the radiant heating circuit, control the auxiliary heating device to be in the on state, and control the air heating circuit actuator to be in the on state.

4. The vehicle thermal management control method according to claim 2, characterized in that, The vehicle thermal management control method further includes: In response to the engine coolant temperature entering a preset temperature range during engine preheating, the output power of the auxiliary heating device is switched from a first power level to a second power level, and the operating wind speed of the air heating circuit actuator is switched from a first wind speed level to a second wind speed level, wherein the second power level is lower than the first power level, and the second wind speed level is lower than the first wind speed level.

5. The vehicle thermal management control method according to claim 1, characterized in that, Determining the thermal management condition of the vehicle based on the aforementioned operating status parameters includes: In response to the engine start-stop status indicating that the engine is in operation and the engine coolant temperature is greater than or equal to a preset temperature threshold, the thermal management condition is determined to be the engine constant temperature condition.

6. The vehicle thermal management control method according to claim 5, characterized in that, The thermal management control command generated based on the thermal management operating conditions includes: In response to the thermal management condition being the engine constant temperature condition, a second control command is generated, wherein the second control command is used to control the electric diverter valve to adjust the flow distribution so that the coolant flow to the radiant heating circuit is greater than the coolant flow to the air heating circuit, control the auxiliary heating device to be in a closed state, and control the air heating circuit actuator to reduce speed or stop operation.

7. The vehicle thermal management control method according to claim 5, characterized in that, The vehicle thermal management control method further includes: In response to the vehicle's passenger compartment temperature reaching the target temperature under the engine constant temperature condition, the electric diverter valve is controlled to block the flow of engine coolant to the air heating circuit and guide the engine coolant to the radiant heating circuit, thereby controlling the radiant heating circuit to maintain the passenger compartment temperature and controlling the air heating circuit actuator to be in the closed state.

8. The vehicle thermal management control method according to claim 1, characterized in that, Determining the thermal management condition of the vehicle based on the aforementioned operating status parameters includes: In response to the engine start-stop status indication that the engine is in a stopped state, the thermal management condition is determined to be the engine shutdown condition.

9. The vehicle thermal management control method according to claim 8, characterized in that, The thermal management control command generated based on the thermal management operating conditions includes: In response to the thermal management condition being an engine shutdown condition, a third control command is generated, wherein the third control command is used to control the electric diverter valve to block the flow of engine coolant to the air heating circuit and guide the engine coolant to flow to the radiant heating circuit, control the auxiliary heating device to be in the on state, and control the air heating circuit actuator to be in the off state.

10. The vehicle thermal management control method according to claim 9, characterized in that, The vehicle thermal management control system further includes: an electric circulation pump, wherein the electric circulation pump is disposed in the radiant heating circuit; the vehicle thermal management control method further includes: When the engine is stopped, the electric circulation pump is started to drive the engine coolant to form an independent circulation loop between the auxiliary heating device and the radiant heating circuit.

11. The vehicle thermal management control method according to claim 8, characterized in that, The thermal management control method further includes: In response to detecting that the engine start-stop state has switched from a stopped state to an operating state, the electric diverter valve is controlled to adjust the flow distribution so that the coolant flow to the air heating circuit is greater than the coolant flow to the radiant heating circuit. The auxiliary heating device is controlled to remain on until the engine coolant temperature reaches a preset temperature threshold. The air heating circuit actuator is controlled to switch from a closed state to the target operating wind speed.

12. The vehicle thermal management control method according to any one of claims 1 to 11, characterized in that, The electric diverter valve is an electric three-way proportional valve, and the thermal management control method further includes: The target opening degree of the electric three-way proportional valve is calculated based on the difference between the engine coolant temperature and the preset temperature threshold, and the difference between the passenger compartment temperature and the target temperature. Adjust the ratio of coolant flow to the air heating circuit and the radiant heating circuit according to the target opening degree.

13. A vehicle thermal management control system, characterized in that, include: An engine, an electric diverter valve, a heating circuit actuator, an auxiliary heating device, and a controller, wherein the electric diverter valve is used to divert engine coolant to a heating circuit and a radiant heating circuit, and the controller is configured to perform the vehicle thermal management control method according to any one of claims 1 to 12.

14. The vehicle thermal management control system according to claim 13, characterized in that, The inlet of the electric diverter valve is connected to the coolant outlet of the engine, the first outlet of the electric diverter valve is connected to the water inlet of the air heating circuit through the first branch pipe, and the second outlet of the electric diverter valve is connected to the water inlet of the radiant heating circuit through the second branch pipe.

15. The vehicle thermal management control system according to claim 13, characterized in that, The vehicle thermal management control system further includes an electric circulation pump, which is connected in series in the radiant heating circuit and is used to drive the engine coolant to form an independent circulation circuit between the auxiliary heating device and the radiant heating circuit when the engine is off.

16. A vehicle thermal management control device, characterized in that, An application is made in a vehicle thermal management control system, the system comprising: an engine, an electric diverter valve, a warm air circuit actuator, and an auxiliary heating device. The electric diverter valve is used to divert engine coolant to the warm air circuit and the radiant heating circuit. The device includes: The acquisition module is used to acquire the operating status parameters of the engine, wherein the operating status parameters include: engine coolant temperature and engine start / stop status; The determination module is used to determine the thermal management condition of the vehicle based on the operating status parameters, wherein the thermal management condition includes one of the following: engine preheating condition, engine constant temperature condition, or engine shutdown condition. The generation module is used to generate thermal management control commands based on the thermal management operating conditions, wherein the thermal management control commands are used to coordinate the operation of the electric diversion valve, the air heating circuit actuator and the auxiliary heating device; The control module is used to execute thermal management control operations using the thermal management control commands.

17. A vehicle, characterized in that, include: Memory, which stores executable programs; A processor for running the program, wherein the program, when running, performs the method according to any one of claims 1 to 12.

18. A computer-readable storage medium, characterized in that, The computer-readable storage medium includes a stored executable program, wherein, when the executable program is executed, it controls the device on which the storage medium is located to perform the method according to any one of claims 1 to 12.

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