Control method of vehicle thermal management system, electronic device and medium

Abstract

The application provides a control method of a vehicle thermal management system, an electronic device and a medium, wherein the system comprises a switching valve group, and a cylinder body circulation pipeline, a cylinder head circulation pipeline, a first heat dissipation circulation pipeline, a second heat dissipation circulation pipeline and an air conditioner circulation pipeline which are independently arranged, and the cylinder body circulation pipeline, the cylinder head circulation pipeline, the first heat dissipation circulation pipeline, the second heat dissipation circulation pipeline and the air conditioner circulation pipeline are connected with corresponding valve ports of the switching valve group. The method comprises the following steps: controlling the communication state of each valve port of the switching valve group according to water outlet temperature information and environmental temperature information, so that the cylinder body circulation pipeline, the cylinder head circulation pipeline, the first heat dissipation circulation pipeline, the second heat dissipation circulation pipeline and the air conditioner circulation pipeline are independently connected; or at least one of the cylinder body circulation pipeline and the cylinder head circulation pipeline is connected with at least one of the other circulation pipelines in a series mode. The application can improve the energy utilization efficiency of the whole vehicle and improve the thermal management precision of the engine.

Description

Technical Field

[0001] This invention relates to the field of thermal management technology, and in particular to a control method for a vehicle thermal management system. Background Technology

[0002] Current thermal management systems for new energy vehicles are evolving from simple distributed three-electric-system thermal management systems to integrated three-electric-system thermal management systems. Efficient integrated thermal management systems and methods can significantly reduce energy loss and extend vehicle range. Furthermore, by monitoring and controlling the real-time temperature of the battery, motor, and electronic control unit, the thermal management system can effectively prevent safety accidents such as thermal runaway.

[0003] However, existing vehicle thermal management systems still have many technical shortcomings, such as:

[0004] First, in existing thermal management systems, the thermal management subsystems of core components such as engines, batteries, motors, and air conditioners operate independently. Effective heat exchange and complementary utilization between these subsystems are not possible, resulting in heat waste and low overall energy utilization efficiency.

[0005] Secondly, multiple independent thermal management subsystems require each subsystem to be equipped with independent pipes, valves and other hardware components, which not only increases the manufacturing cost of the whole vehicle, but also leads to a complex system structure and an increase in failure points.

[0006] Third, for hybrid vehicles, engine thermal management typically employs an integrated cylinder block and cylinder head circulation system. However, the engine block and cylinder head experience different thermal loads during operation, and the integrated circulation system makes it difficult to control both the engine block and cylinder head within their optimal operating temperature range, thus impacting engine efficiency and lifespan.

[0007] Therefore, existing vehicle thermal management systems suffer from problems such as low system heat utilization, complex structure, and insufficient engine thermal management accuracy. Summary of the Invention

[0008] The purpose of this invention is to solve the problems of low system heat utilization, complex structure, and insufficient engine thermal management accuracy in existing vehicle thermal management systems.

[0009] To address the aforementioned problems, embodiments of the present invention disclose a control method for a vehicle thermal management system. The vehicle thermal management system includes: a switching valve assembly, and independently configured cylinder block circulation pipes, cylinder head circulation pipes, a first cooling circulation pipe, a second cooling circulation pipe, and an air conditioning circulation pipe. The cylinder block circulation pipes, cylinder head circulation pipes, the first cooling circulation pipe, the second cooling circulation pipe, and the air conditioning circulation pipe are respectively connected to corresponding valve ports of the switching valve assembly. The vehicle's engine block and engine cylinder head are respectively located in the cylinder block circulation pipes and cylinder head circulation pipes. Furthermore, the control method includes: acquiring coolant outlet temperature information and ambient temperature information of the engine block and engine cylinder head, and controlling the connection state of each valve port of the switching valve assembly based on the coolant outlet temperature information and ambient temperature information, so that the cylinder block circulation pipes, cylinder head circulation pipes, the first cooling circulation pipe, the second cooling circulation pipe, and the air conditioning circulation pipe are each independently connected; or at least one of the cylinder block circulation pipes and the cylinder head circulation pipe is connected in series with at least one of the first cooling circulation pipe, the second cooling circulation pipe, and the air conditioning circulation pipe.

[0010] According to another specific embodiment of the present invention, the control method of the vehicle thermal management system disclosed in this embodiment controls the connection state of each valve port of the switching valve group according to the outlet water temperature information and the ambient temperature information, including: determining the current environmental condition of the vehicle according to the ambient temperature information; wherein, the environmental condition includes summer condition and winter condition; if the current environmental condition is summer condition, then calling the first threshold array, and controlling the connection state of each valve port of the switching valve group according to the outlet water temperature information and the first threshold array; if the current environmental condition is winter condition, then calling the second threshold array, and controlling the connection state of each valve port of the switching valve group according to the outlet water temperature information and the second threshold array.

[0011] According to another specific embodiment of the present invention, the control method for a vehicle thermal management system disclosed in this embodiment includes water outlet temperature information comprising a first water temperature, a second water temperature, and a third water temperature; wherein the first water temperature is the water outlet temperature of the engine cylinder head, the second water temperature is the water outlet temperature of the engine block, and the third water temperature is the average temperature calculated based on the first and second water temperatures. Furthermore, controlling the connection state of each valve port of the switching valve group according to the water outlet temperature information and a first threshold array includes: controlling the connection state of each valve port of the switching valve group according to the first water temperature, the second water temperature, and the first threshold array; or controlling the connection state of each valve port of the switching valve group according to the third water temperature and the first threshold array. Controlling the connection state of each valve port of the switching valve group according to the water outlet temperature information and a second threshold array includes: controlling the connection state of each valve port of the switching valve group according to the first water temperature, the second water temperature, and the second threshold array; or controlling the connection state of each valve port of the switching valve group according to the third water temperature and the second threshold array.

[0012] According to another specific embodiment of the present invention, the control method for a vehicle thermal management system disclosed in this embodiment includes a first threshold array comprising a first temperature threshold, a second temperature threshold, a third temperature threshold, and a fourth temperature threshold, which increase sequentially. Furthermore, the connection state of each valve port of the switching valve group is controlled according to the first water temperature, the second water temperature, and the first threshold array, including: when both the first and second water temperatures are less than or equal to the first temperature threshold, the two valve ports corresponding to the cylinder block circulation pipe, cylinder head circulation pipe, first cooling circulation pipe, second cooling circulation pipe, and air conditioning circulation pipe are connected to each other; when the first water temperature is greater than the first temperature threshold and less than or equal to the second temperature threshold, and the second water temperature is less than or equal to the first temperature threshold, the valve ports corresponding to the cylinder head circulation pipe and the first cooling circulation pipe are all connected to each other, and the cylinder block circulation pipe, the second cooling circulation pipe, and the air conditioning circulation pipe are each connected to each other. The two corresponding valve ports are connected to each other; when the first water temperature is greater than the second temperature threshold and less than or equal to the third temperature threshold, and the second water temperature is greater than the first temperature threshold and less than or equal to the second temperature threshold, the valve ports corresponding to the cylinder head circulation pipe and the first cooling circulation pipe are connected to each other, the valve ports corresponding to the cylinder block circulation pipe and the second cooling circulation pipe are connected to each other, and the two valve ports corresponding to the air conditioning circulation pipe are connected to each other; when the first water temperature is greater than the third temperature threshold and less than or equal to the fourth temperature threshold, and the second water temperature is greater than the second temperature threshold and less than or equal to the third temperature threshold, the valve ports corresponding to the cylinder block circulation pipe, the cylinder head circulation pipe, and the first cooling circulation pipe are connected to each other. The valve ports corresponding to the pipeline and the second heat dissipation circulation pipeline are all interconnected; and the two valve ports corresponding to the air conditioning circulation pipeline are interconnected; when the first water temperature is greater than the fourth temperature threshold and the second water temperature is greater than the third temperature threshold, the valve ports corresponding to the cylinder head circulation pipeline and the air conditioning circulation pipeline are all interconnected, and the valve ports corresponding to the cylinder block circulation pipeline, the first heat dissipation circulation pipeline, and the second heat dissipation circulation pipeline are all interconnected; the connection status of each valve port of the switching valve group is controlled according to the third water temperature and the first threshold array, including: when the third water temperature is less than or equal to the first temperature threshold, the cylinder block circulation pipeline, the cylinder head circulation pipeline, the first heat dissipation circulation pipeline, and the second heat dissipation circulation pipeline are all interconnected. The two valve ports corresponding to the ring pipe and the air conditioning circulation pipe are connected to each other; when the third water temperature is greater than the first temperature threshold and less than or equal to the second temperature threshold, the valve ports corresponding to the cylinder head circulation pipe and the first cooling circulation pipe are all connected to each other, and the valve ports corresponding to the cylinder block circulation pipe and the second cooling circulation pipe are all connected to each other; and the two valve ports corresponding to the air conditioning circulation pipe are connected to each other.When the third water temperature is greater than the third temperature threshold and less than or equal to the fourth temperature threshold, the valve ports corresponding to the cylinder head circulation pipe and the air conditioning circulation pipe are all interconnected; the valve ports corresponding to the cylinder block circulation pipe and the first cooling circulation pipe are all interconnected; and the two valve ports corresponding to the second cooling circulation pipe are interconnected. When the third water temperature is greater than the fourth temperature threshold, the two valve ports corresponding to the cylinder head circulation pipe, the cylinder block circulation pipe, and the air conditioning circulation pipe are all interconnected; and the two valve ports corresponding to the first cooling circulation pipe and the second cooling circulation pipe are each interconnected.

[0013] According to another specific embodiment of the present invention, the control method for a vehicle thermal management system disclosed in this embodiment includes a second threshold array comprising a fifth temperature threshold, a sixth temperature threshold, a seventh temperature threshold, and an eighth temperature threshold, which increase sequentially. The vehicle thermal management system also includes an independently configured heater circulation pipe, in which a heater core is disposed. Furthermore, the connection state of each valve port of the switching valve group is controlled according to the first water temperature, the second water temperature, and the second threshold array, including: when both the first and second water temperatures are less than or equal to the fifth temperature threshold, the two valve ports corresponding to the cylinder block circulation pipe, the cylinder head circulation pipe, the first cooling circulation pipe, and the second cooling circulation pipe are connected to each other; and the valve ports corresponding to the heater circulation pipe and the air conditioning circulation pipe are all connected to each other; when the first water temperature is greater than the fifth temperature threshold and less than or equal to the sixth temperature threshold, and the second water temperature is less than or equal to the fifth temperature threshold, the valve ports corresponding to the cylinder head circulation pipe and the heater circulation pipe are all connected to each other. Furthermore, the two valve ports corresponding to the cylinder block circulation pipe, the first cooling circulation pipe, the second cooling circulation pipe, and the air conditioning circulation pipe are all interconnected; when the first water temperature is greater than the sixth temperature threshold and less than or equal to the seventh temperature threshold, and the second water temperature is greater than the fifth temperature threshold and less than or equal to the sixth temperature threshold, the valve ports corresponding to the cylinder head circulation pipe, the cylinder block circulation pipe, and the heater circulation pipe are all interconnected, and the valve ports corresponding to the first cooling circulation pipe, the second cooling circulation pipe, and the air conditioning circulation pipe are all interconnected; when the first water temperature is greater than the seventh temperature threshold and less than or equal to the eighth temperature threshold, and the second water temperature... When the water temperature is greater than the sixth temperature threshold and less than or equal to the seventh temperature threshold, the valve ports corresponding to the cylinder head circulation pipe and the first cooling circulation pipe are all interconnected, the valve ports corresponding to the cylinder block circulation pipe and the heater circulation pipe are all interconnected, and the two valve ports corresponding to the second cooling circulation pipe and the air conditioning circulation pipe are each interconnected; when the first water temperature is greater than the eighth temperature threshold and the second water temperature is greater than the seventh temperature threshold, the valve ports corresponding to the cylinder head circulation pipe, cylinder block circulation pipe, first cooling circulation pipe, second cooling circulation pipe, heater circulation pipe, and air conditioning circulation pipe are all interconnected; control is performed based on the third water temperature and the second threshold group. The connection status of each valve port of the control switching valve group includes: when the third water temperature is less than or equal to the fifth temperature threshold, the two valve ports corresponding to the cylinder block circulation pipe, cylinder head circulation pipe, first heat dissipation circulation pipe, and second heat dissipation circulation pipe are connected to each other; and the valve ports corresponding to the heater circulation pipe and air conditioning circulation pipe are all connected to each other; when the third water temperature is greater than the fifth temperature threshold and less than or equal to the sixth temperature threshold, the valve ports corresponding to the cylinder head circulation pipe, cylinder block circulation pipe, and heater circulation pipe are all connected to each other, and the valve ports corresponding to the first heat dissipation circulation pipe, second heat dissipation circulation pipe, and air conditioning circulation pipe are all connected.When the third water temperature is greater than the sixth temperature threshold and less than or equal to the seventh temperature threshold, the valve ports corresponding to the cylinder head circulation pipe and the heater circulation pipe are connected to each other; the valve ports corresponding to the cylinder block circulation pipe and the second radiator circulation pipe are connected to each other; and the two valve ports corresponding to the first radiator circulation pipe and the air conditioning circulation pipe are each connected to each other. When the first water temperature is greater than the seventh temperature threshold and less than or equal to the eighth temperature threshold, the valve ports corresponding to the cylinder head circulation pipe, the first radiator circulation pipe, and the heater circulation pipe are all connected to each other; the valve ports corresponding to the cylinder block circulation pipe and the second radiator circulation pipe are connected to each other; and the two valve ports corresponding to the air conditioning circulation pipe are connected to each other. When the first water temperature is greater than the eighth temperature threshold and the second water temperature is greater than the seventh temperature threshold, the valve ports corresponding to the cylinder head circulation pipe, the cylinder block circulation pipe, the first radiator circulation pipe, the second radiator circulation pipe, the heater circulation pipe, and the air conditioning circulation pipe are all connected to each other.

[0014] According to another specific embodiment of the present invention, the control method of the vehicle thermal management system disclosed in this embodiment further includes an independently configured battery circulation pipeline and a motor circulation pipeline. The battery circulation pipeline and the motor circulation pipeline are respectively connected to the corresponding valve ports of the switching valve group. The vehicle's battery and motor are respectively disposed in the battery circulation pipeline and the motor circulation pipeline. Furthermore, when the motor is running, the connection status of each valve port of the switching valve group is controlled according to the outlet water temperature information and the first threshold array, including: when both the first water temperature and the second water temperature are less than or equal to the first temperature threshold, the two valve ports corresponding to the cylinder block circulation pipe, cylinder head circulation pipe, first cooling circulation pipe, second cooling circulation pipe, and air conditioning circulation pipe are connected to each other; when the first water temperature is greater than the first temperature threshold and less than or equal to the second temperature threshold, and the second water temperature is less than or equal to the first temperature threshold, the valve ports corresponding to the cylinder head circulation pipe and the second cooling circulation pipe are connected to each other, the two valve ports corresponding to the cylinder block circulation pipe are connected to each other, the valve ports corresponding to the battery circulation pipe and the air conditioning circulation pipe are connected to each other, and the valve ports corresponding to the motor circulation pipe and the first cooling circulation pipe are connected to each other; when the first water temperature is greater than the second temperature threshold and less than or equal to the third temperature threshold, and the second water temperature is greater than the first temperature threshold and less than or equal to the second temperature threshold, the valve ports corresponding to the cylinder head circulation pipe and the second cooling circulation pipe are connected to each other. The valve ports corresponding to the two cooling circulation pipes are all interconnected. The valve ports corresponding to the cylinder block circulation pipe, motor circulation pipe, and first cooling circulation pipe are interconnected. Furthermore, the valve ports corresponding to the battery circulation pipe and air conditioning circulation pipe are interconnected. When the first water temperature is greater than the third temperature threshold and less than or equal to the fourth temperature threshold, and the second water temperature is greater than the second temperature threshold and less than or equal to the third temperature threshold, the valve ports corresponding to the cylinder block circulation pipe, cylinder head circulation pipe, and second cooling circulation pipe are all interconnected. The valve ports corresponding to the motor circulation pipe and first cooling circulation pipe are all interconnected. Furthermore, the valve ports corresponding to the battery circulation pipe and air conditioning circulation pipe are all interconnected. When the first water temperature is greater than the fourth temperature threshold and the second water temperature is greater than the third temperature threshold, the valve ports corresponding to the cylinder head circulation pipe, battery circulation pipe, and air conditioning circulation pipe are interconnected. The valve ports corresponding to the cylinder block circulation pipe and second cooling circulation pipe are all interconnected. Furthermore, the valve ports corresponding to the motor circulation pipe and first cooling circulation pipe are all interconnected.Alternatively, when the third water temperature is less than or equal to the first temperature threshold, the valve ports corresponding to the cylinder block circulation pipe and the cylinder head circulation pipe are interconnected; the valve ports corresponding to the battery circulation pipe and the air conditioning circulation pipe are interconnected; the valve ports corresponding to the motor circulation pipe and the first cooling circulation pipe are interconnected; and the two valve ports corresponding to the second cooling circulation pipe are interconnected. When the third water temperature is greater than the first temperature threshold and less than or equal to the second temperature threshold, the valve ports corresponding to the cylinder head circulation pipe, the cylinder block circulation pipe, and the second cooling circulation pipe are interconnected; the valve ports corresponding to the battery circulation pipe and the air conditioning circulation pipe are interconnected; and the valve ports corresponding to the motor circulation pipe and the first cooling circulation pipe are interconnected. When the third water temperature is greater than the second temperature threshold and less than or equal to the third temperature threshold, the valve ports corresponding to the cylinder head circulation pipe, the motor circulation pipe, and the first cooling circulation pipe are interconnected. All valve ports corresponding to the circuit are interconnected; all valve ports corresponding to the cylinder block circulation pipe and the second cooling circulation pipe are interconnected; and all valve ports corresponding to the battery circulation pipe and the air conditioning circulation pipe are interconnected; when the third water temperature is greater than the third temperature threshold and less than or equal to the fourth temperature threshold, all valve ports corresponding to the cylinder head circulation pipe, battery circulation pipe, and air conditioning circulation pipe are interconnected, all valve ports corresponding to the cylinder block circulation pipe and the second cooling circulation pipe are interconnected, and all valve ports corresponding to the motor circulation pipe and the first cooling circulation pipe are interconnected; when the third water temperature is greater than the fourth temperature threshold, all valve ports corresponding to the cylinder head circulation pipe, cylinder block circulation pipe, battery circulation pipe, and air conditioning circulation pipe are interconnected, all valve ports corresponding to the motor circulation pipe and the first cooling circulation pipe are interconnected; and the two valve ports corresponding to the second cooling circulation pipe are interconnected.

[0015] According to another specific embodiment of the present invention, the control method of the vehicle thermal management system disclosed in the present invention further includes a heating circulation pipeline, which is connected to a corresponding valve port of the switching valve group, wherein a heater is provided in the heating circulation pipeline. Furthermore, when the motor is running and the battery needs heating, the connection status of each valve port of the switching valve group is controlled according to the outlet water temperature information and the second threshold array, including: when the outlet water temperature information is less than or equal to the fifth temperature threshold, the valve ports corresponding to the heating circulation pipeline and the battery circulation pipeline are connected to each other; when the outlet water temperature information is greater than the fifth temperature threshold and less than or equal to the sixth temperature threshold, the valve ports corresponding to the battery circulation pipeline and the motor circulation pipeline are connected to each other; when the outlet water temperature information is greater than the sixth temperature threshold and less than or equal to the seventh temperature threshold, the valve ports corresponding to the cylinder block circulation pipeline and the battery circulation pipeline are connected to each other; when the outlet water temperature information is greater than the seventh temperature threshold and less than or equal to the eighth temperature threshold, the valve ports corresponding to the cylinder head circulation pipeline, the heater circulation pipeline, and the battery circulation pipeline are connected to each other; when the outlet water temperature information is greater than the eighth temperature threshold, the valve ports corresponding to the cylinder head circulation pipeline, the heater circulation pipeline, the battery circulation pipeline, and the second heat dissipation circulation pipeline are connected to each other.

[0016] According to another specific embodiment of the present invention, the control method for a vehicle thermal management system disclosed in this embodiment includes an air conditioning circulation pipeline comprising an air conditioning main circulation pipeline, an air conditioning cooling circulation pipeline, an air conditioning heating circulation pipeline, a first heat exchanger, and a second heat exchanger, all independently configured. The air conditioning cooling circulation pipeline and the air conditioning heating circulation pipeline are respectively connected to corresponding valve ports of a switching valve group. The air conditioning cooling circulation pipeline is connected to the air conditioning main circulation pipeline via the second heat exchanger, and the air conditioning heating circulation pipeline is connected to the air conditioning main circulation pipeline via the first heat exchanger. Furthermore, the switching valve group is a 22-way valve. A first radiator is provided in the first cooling circulation pipeline, and a second radiator is provided in the second cooling circulation pipeline. Both the first and second radiators are located inside the front compartment of the vehicle, with the first radiator positioned closer to the front of the vehicle than the second radiator.

[0017] The present invention discloses an electronic device, including a processor and a memory communicatively connected to the processor; the memory stores computer-executable instructions; the processor executes the computer-executable instructions stored in the memory to implement the control method of the vehicle thermal management system as described in any of the above embodiments.

[0018] The present invention discloses a computer-readable storage medium storing computer-executable instructions, which, when executed by a processor, are used to implement the control method of the vehicle thermal management system as described in any of the above embodiments.

[0019] The beneficial effects of this invention are:

[0020] The vehicle thermal management system control method provided in this application controls the independent or series connection of each circulation pipeline by switching valve groups. This enables heat complementarity between the engine block and cylinder head, and between the engine and the air conditioning system, solving the problem of complex thermal management system piping, improving overall energy utilization efficiency, reducing vehicle energy consumption, and extending driving range. Furthermore, by independently controlling the heating or cooling of the engine block and cylinder head based on their outlet water temperatures, the method ensures that both the engine block and cylinder head operate within their optimal temperature range, thereby improving engine efficiency. Attached Figure Description

[0021] Figure 1 This is a schematic diagram of the vehicle thermal management system provided in an embodiment of the present invention;

[0022] Figure 2 This is a flowchart illustrating the control method of the vehicle thermal management system provided in an embodiment of the present invention;

[0023] Figure 3 This is another structural schematic diagram of the vehicle thermal management system provided in an embodiment of the present invention.

[0024] Explanation of reference numerals in the attached figures:

[0025] 1. Cylinder block circulation piping; 11. Engine block; 12. Fourth water pump; 2. Cylinder head circulation piping; 21. Engine cylinder head; 22. Third water pump; 3. First cooling circulation piping; 31. First radiator; 4. Second cooling circulation piping; 41. Second radiator; 5. Air conditioning circulation piping; 51. Air conditioning cooling circulation piping; 52. Air conditioning heating circulation piping; 53. First heat exchanger; 54. Second heat exchanger; 55. Outdoor heat exchanger; 56. Indoor evaporator; 57. Air conditioning main circulation piping; 58. Compressor; 59. Heat pump circulation branch; 6. Battery circulation piping; 61. Battery; 62. First water pump; 7. Motor circulation piping; 71. Motor; 72. Electronic control components; 73. Second water pump; 8. Heating circulation piping; 81. Heater; 9. Warm air circulation piping; 91. Indoor warm air core; 92. Fifth water pump. Detailed Implementation

[0026] Example 1:

[0027] To address the problems of low system heat utilization, complex structure, and insufficient engine thermal management accuracy in existing vehicle thermal management systems, this embodiment provides a control method for a vehicle thermal management system.

[0028] First, refer to Figure 1 The vehicle thermal management system is described.

[0029] The vehicle thermal management system includes: a switching valve assembly, and independently configured cylinder block circulation pipe 1, cylinder head circulation pipe 2, first cooling circulation pipe 3, second cooling circulation pipe 4, and air conditioning circulation pipe 5. Cylinder block circulation pipe 1, cylinder head circulation pipe 2, first cooling circulation pipe 3, second cooling circulation pipe 4, and air conditioning circulation pipe 5 are respectively connected to the corresponding valve ports of the switching valve assembly; wherein, the vehicle's engine cylinder block 11 and engine cylinder head 21 are respectively located in cylinder block circulation pipe 1 and cylinder head circulation pipe 2.

[0030] Specifically, the switching valve group is used to control the on / off state and connection relationship of each circulation pipeline. It realizes the independent or series-parallel connection of different circulation pipelines through the connection state of the valve port. Specifically, it can be a multi-way valve (such as a twenty-way valve) with multiple valve ports, or a combination of multi-way valves (such as a combination of multiple three-way valves, or multiple four-way valves, or a combination of three-way valves and four-way valves).

[0031] The air conditioning circulation pipe 5 is a coolant circulation pipe used for heat exchange in the vehicle's air conditioning system. Air conditioning circulation pipe 5 can be an air conditioning cooling circulation pipe 51, with a second heat exchanger 54 connected in series within the pipe. The second heat exchanger 54 is connected to the indoor evaporator 56. When heat dissipation is needed for each circulation pipe, the coolant flows through the second heat exchanger 54, exchanging heat with the refrigerant in the air conditioning system to achieve rapid cooling, suitable for high-temperature conditions in summer. Air conditioning circulation pipe 5 can also be an air conditioning heating circulation pipe 52, with a first heat exchanger 53 connected in series within the pipe. The first heat exchanger 53 is connected to the outdoor heat exchanger 55. When heating is needed for each circulation pipe or to provide heating for the driver's cabin, the coolant flows through the first heat exchanger 53, absorbing heat from the air conditioning system to achieve temperature rise, suitable for low-temperature conditions in winter. Of course, air conditioning circulation pipe 5 can also be an integrated circuit of air conditioning cooling circulation pipe 51 and air conditioning heating circulation pipe 52.

[0032] For example, in a preferred implementation, the air conditioning circulation pipeline 5 includes an air conditioning main circulation pipeline 57, an air conditioning cooling circulation pipeline 51, an air conditioning heating circulation pipeline 52, a first heat exchanger 53, and a second heat exchanger 54, which are independently arranged with each other; the air conditioning cooling circulation pipeline 51 and the air conditioning heating circulation pipeline 52 are respectively connected to the corresponding valve ports of the switching valve group; the air conditioning cooling circulation pipeline 51 is connected to the air conditioning main circulation pipeline 57 via the second heat exchanger 54; and the air conditioning heating circulation pipeline 52 is connected to the air conditioning main circulation pipeline 57 via the first heat exchanger 53.

[0033] The coolant outlet temperature information refers to the outlet temperature of the coolant in the engine block circulation pipe 1 and the cylinder head circulation pipe 2. It can be obtained in real time by a first temperature sensor installed at the coolant outlet of the engine block 11 and a second temperature sensor installed at the coolant outlet of the engine cylinder head 21, or by the vehicle controller based on the engine's operating parameters (such as speed, load, and fuel injection quantity) and coolant flow rate, according to a preset temperature calculation model.

[0034] Ambient temperature information refers to the ambient temperature of the vehicle's surroundings, which can be collected by an ambient temperature sensor located in the vehicle's front compartment, or obtained through an in-vehicle navigation system or online weather data.

[0035] The connectivity of valve ports refers to the on / off state of each valve port in the switching valve assembly, which includes independent connection and series connection. Independent connection means that the valve ports of each circulation pipe are individually connected. The cylinder block circulation pipe 1, cylinder head circulation pipe 2, first cooling circulation pipe 3, second cooling circulation pipe 4, and air conditioning circulation pipe 5 each form a closed, independent loop, with no heat exchange between the pipes. This is suitable for low-load engine conditions where the temperature of each component is even. Series connection means that the valve ports of at least two circulation pipes are connected, forming a series circulation loop. For example, cylinder head circulation pipe 2 is connected in series with the first cooling circulation pipe 3, cylinder block circulation pipe 1 is connected in series with the air conditioning circulation pipe 5, or cylinder head circulation pipe 2, cylinder block circulation pipe 1, and second cooling circulation pipe 4 are connected in series. This allows for heat transfer and complementary utilization, suitable for high-load engine conditions requiring rapid heat dissipation or warm-up.

[0036] Further, refer to Figure 2 The control method includes the following steps:

[0037] The system acquires the water outlet temperature information and ambient temperature information of the engine block 11 and engine cylinder head 21, and controls the connection status of each valve port of the switching valve group according to the water outlet temperature information and ambient temperature information, so that the cylinder block circulation pipe 1, cylinder head circulation pipe 2, first cooling circulation pipe 3, second cooling circulation pipe 4 and air conditioning circulation pipe 5 are each independently connected; or at least one of the cylinder block circulation pipe 1 and cylinder head circulation pipe 2 is connected in series with at least one of the first cooling circulation pipe 3, second cooling circulation pipe 4 and air conditioning circulation pipe 5.

[0038] Specifically, at least one of the cylinder block circulation pipe 1 and the cylinder head circulation pipe 2 is connected in series with at least one of the first cooling circulation pipe 3, the second cooling circulation pipe 4, and the air conditioning circulation pipe 5. For example, the cylinder block circulation pipe 1 can be connected in series with the first cooling circulation pipe 3, and the cylinder head circulation pipe 2 can be connected in series with the second cooling circulation pipe 4 to independently cool the engine block and cylinder head; or the cylinder block circulation pipe 1, the cylinder head circulation pipe 2, and the air conditioning circulation pipe 5 can be connected in series to use the residual heat of the cylinder block to heat the cylinder head in winter and use the heat from the air conditioning to assist in warming up the engine; or the cylinder block circulation pipe 1, the cylinder head circulation pipe 2, the first cooling circulation pipe 3, the second cooling circulation pipe 4, and the air conditioning circulation pipe 5 can be connected in series to achieve rapid cooling of the engine in summer by using the air conditioning system, the first radiator 31 in the first cooling circulation pipe 3, and the second radiator 41 in the second cooling circulation pipe 4.

[0039] More specifically, when the vehicle's thermal management system switches the state of the circulation pipeline, it first collects temperature parameters. Specifically, the temperature sensors at the cylinder block outlet and cylinder head outlet collect the water outlet temperature information of the cylinder block and cylinder head, respectively, and the ambient temperature sensor collects the external ambient temperature information. The above temperature information is transmitted to the vehicle controller, which performs filtering, noise reduction, and other processing on the signal.

[0040] Next, the operating condition is determined based on the temperature information. When the ambient temperature is greater than or equal to the set value (e.g., 25℃), it is determined to be a summer heat dissipation condition, and the heat dissipation control strategy is executed first. When the ambient temperature is less than the set value (e.g., 25℃), it is determined to be a winter heating condition, and the temperature rise control strategy is executed first. At the same time, the engine thermal load status is determined based on the water outlet temperature information of the engine block 11 and cylinder head, and the engine is divided into a low temperature range (≤80℃), a medium temperature range (80℃~100℃), and a high temperature range (>100℃).

[0041] Next, control commands are sent to the switching valve assembly based on the current operating conditions to adjust the connectivity of each valve port. For example, in the first scenario, the vehicle is currently operating under summer conditions, and the coolant temperatures of the engine block 11 and cylinder head are both in the low-temperature range. In this case, the switching valve assembly is controlled to adjust each circulation pipeline to be independently connected to reduce energy consumption. In the second scenario, the vehicle is currently operating under winter conditions, and the coolant temperature of the engine block 11 is in the medium-temperature range (80℃~100℃), while the coolant temperature of the cylinder head is in the low-temperature range (≤80℃). In this case, the switching valve assembly is controlled to adjust each circulation pipeline so that the cylinder block circulation pipeline 1 and the cylinder head circulation pipeline 2 are connected in series, utilizing the residual heat of the cylinder block to heat the cylinder head. At the same time, the cylinder block circulation pipeline 1 is connected in series with the second cooling circulation pipeline 4 for appropriate heat dissipation, preventing the cylinder block temperature from becoming too high and achieving balanced control of the cylinder block and cylinder head temperatures.

[0042] By employing the aforementioned method, and controlling the independent or series connection of each circulation pipeline through switching valve groups, heat complementarity can be achieved between the engine block 11 and cylinder head, and between the engine and the air conditioning system. This solves the problem of complex thermal management system piping, improves overall energy utilization efficiency, reduces vehicle energy consumption, and extends driving range. Furthermore, by independently controlling the heating or cooling of the engine block 11 and cylinder head 21 based on the outlet water temperature of the engine block 11 and cylinder head, the engine block and cylinder head can be kept within their optimal operating temperature range, thereby improving engine efficiency.

[0043] Furthermore, in the control method of this vehicle thermal management system, the connection state of each valve port of the switching valve group is controlled according to the outlet water temperature information and the ambient temperature information. This includes: determining the current environmental conditions of the vehicle based on the ambient temperature information. The environmental conditions include summer conditions and winter conditions. If the current environmental condition is summer, a first threshold array is invoked, and the connection state of each valve port of the switching valve group is controlled according to the outlet water temperature information and the first threshold array. If the current environmental condition is winter, a second threshold array is invoked, and the connection state of each valve port of the switching valve group is controlled according to the outlet water temperature information and the second threshold array.

[0044] Specifically, determining the vehicle's current environmental operating condition based on ambient temperature information can be done in several ways. First, it can be based on fixed temperature thresholds. For example, an ambient temperature ≥ 28℃ is considered a summer operating condition, while an ambient temperature < 28℃ is considered a winter operating condition. Second, it can be based on temperature ranges and fluctuations. For instance, an ambient temperature ≥ 25℃ for more than two days is considered a summer operating condition, while an ambient temperature < 20℃ for more than two days is considered a winter operating condition. When the temperature is between 20℃ and 25℃, the threshold array for the previous operating condition is maintained.

[0045] The first threshold array is a set of temperature thresholds used to determine heat dissipation requirements under summer operating conditions, and the second threshold array is a set of temperature thresholds used to determine heating requirements under winter operating conditions. Both are stored in the vehicle controller and used to determine the thermal load status of the engine block 11 and cylinder head. The first threshold array can include four temperature thresholds: ST1=80℃, ST2=90℃, ST3=100℃, and ST4=110℃, used to divide the engine block 11 and cylinder head into four ranges: low temperature, medium temperature, high temperature, and extremely high temperature. Alternatively, it can include only three temperature thresholds, such as a low temperature range (≤85℃), a medium temperature range (85℃~95℃), and a high temperature range (>95℃) to simplify calculation and judgment. The second threshold array can also include 3-4 temperature thresholds between 60℃ and 90℃.

[0046] The switching valve assembly is controlled based on the outlet water temperature information and threshold array. For example, under summer operating conditions, when the average outlet water temperature is in the medium temperature range, the cylinder head circulation pipe 2, cylinder block circulation pipe 1, first cooling circulation pipe 3, and second cooling circulation pipe 4 can be connected in series to achieve coordinated heat exchange between the two radiators. Alternatively, under summer operating conditions, when the cylinder head outlet water temperature is in the medium temperature range and the cylinder block outlet water temperature is in the low temperature range, only the cylinder head circulation pipe 2 and the first cooling circulation pipe 3 are connected in series, while the cylinder block maintains self-circulation.

[0047] This approach, which divides summer and winter operating conditions based on ambient temperature, avoids the problem of low control efficiency and energy waste caused by extreme climates in the thermal management system. Furthermore, selecting a threshold array based on the heat dissipation or heating needs of different seasons better matches the temperature requirements of each component under different temperatures, further improving energy utilization efficiency.

[0048] Furthermore, in the control method of the vehicle thermal management system, the water outlet temperature information includes a first water temperature, a second water temperature, and a third water temperature; wherein, the first water temperature is the water outlet temperature of the engine cylinder head 21, the second water temperature is the water outlet temperature of the engine block 11, and the third water temperature is the average temperature calculated based on the first water temperature and the second water temperature.

[0049] Specifically, the first coolant temperature is the outlet temperature of the engine cylinder head 21, which can be acquired by a temperature sensor located at the cylinder head outlet. The second coolant temperature is the outlet temperature of the engine block 11, which can be acquired by a temperature sensor located at the block outlet. The third coolant temperature is calculated based on the outlet temperatures of the engine cylinder head 21 and the block. In one specific implementation, the third coolant temperature = (first coolant temperature + second coolant temperature) / 2. This calculation method is simple and has a fast response time. In other possible implementations, the third coolant temperature can be calculated based on a weighted average of the heat capacity ratios of the block and cylinder head. For example, the third coolant temperature = first coolant temperature × 0.6 + second coolant temperature × 0.4. This calculation method yields more accurate results.

[0050] Furthermore, controlling the connectivity of each valve port of the switching valve group based on the outlet water temperature information and the first threshold array includes: controlling the connectivity of each valve port of the switching valve group based on the first water temperature, the second water temperature, and the first threshold array; or controlling the connectivity of each valve port of the switching valve group based on the third water temperature and the first threshold array. Controlling the connectivity of each valve port of the switching valve group based on the outlet water temperature information and the second threshold array includes: controlling the connectivity of each valve port of the switching valve group based on the first water temperature, the second water temperature, and the second threshold array; or, controlling the connectivity of each valve port of the switching valve group based on the third water temperature and the second threshold array.

[0051] This approach, which independently controls the valve connection based on the first and second water temperatures, better adapts to temperature differences between the cylinder head and cylinder block, preventing localized overheating or overcooling from affecting adjustment accuracy. Controlling based on the third water temperature reduces the system's computational requirements. Two water temperature control modes are provided, which can be switched based on sensor failure or operating condition complexity. For example, independent water temperature calculation is used under complex operating conditions, while uniform temperature calculation is used when the sensor fails, improving system reliability and accuracy.

[0052] Next, the various mode switching methods of this thermal management system will be described based on different temperature thresholds, seasons, the operating status of the three-electric system (battery, motor, and electronic control system), and the temperature requirements of the three-electric system. Before proceeding, refer to... Figure 3 This section provides a detailed description of a specific thermal management system.

[0053] The thermal management system includes a 20-way valve, an air conditioning main circulation pipe 57, a first heat exchanger 53 and a second heat exchanger 54, and an air conditioning cooling circulation pipe 51, an air conditioning heating circulation pipe 52, a battery circulation pipe 6, a motor circulation pipe 7, a first heat dissipation circulation pipe 3, a second heat dissipation circulation pipe 4, a cylinder head circulation pipe 2, a cylinder block circulation pipe 1, a heating circulation pipe 8, and a warm air circulation pipe 9.

[0054] The compressor 58, three-way valve, outdoor heat exchanger 55, first expansion valve, second expansion valve, outdoor heat exchanger 55, and gas-liquid separator are connected in series on the main air conditioning circulation pipe 57. The A and B ports of the three-way valve are connected to the main air conditioning circulation pipe 57. One port of the heat pump circulation branch 59 of the main air conditioning circulation pipe 57 is connected to the C port of the three-way valve. The other port of the heat pump circulation branch 59 is connected to the main air conditioning circulation pipe 57 between the outdoor heat exchanger 55 and the gas-liquid separator. The first heat exchanger 53, third expansion valve, and second heat exchanger 54 are connected in series on the heat pump circulation branch 59.

[0055] The two ports of the air conditioning cooling circulation pipe 51 are connected to the D and E ports of the 20-way valve, respectively, and the second heat exchanger 54 is connected in series with the air conditioning cooling circulation pipe 51. The two ports of the battery circulation pipe 6 are connected to the F and G ports of the 20-way valve, respectively, and the first water pump 62 and the battery 61 are connected in series with the battery circulation pipe 6. The two ports of the motor circulation pipe 7 are connected to the H and J ports of the 20-way valve, respectively, and the second water pump 73, the motor 71, and the electronic control component 72 are connected in series with the motor circulation pipe 7. The two ports of the first heat dissipation circulation pipe 3 are connected to the K and L ports of the 20-way valve, respectively, and the first radiator 31 is connected in series with the first heat dissipation circulation pipe 3. The two ports of the cylinder head circulation pipe 2 are connected to the M and N ports of the 20-way valve, respectively, and the third water pump 22 and the engine cylinder head 21 are connected in series with the cylinder head circulation pipe 2. The two ports of cylinder block circulation pipe 1 are connected to the O and P ports of the 20-way valve, respectively. The fourth water pump 12 and the engine cylinder block 11 are connected in series on cylinder block circulation pipe 1. The two ports of the second cooling circulation pipe 4 are connected to the Q and R ports of the 20-way valve, respectively. The second radiator 41 is connected in series on the second cooling circulation pipe 4. The two ports of heating circulation pipe 8 are connected to the S and T ports of the 20-way valve, respectively. The heater 81 is connected in series on heating circulation pipe 8. The two ports of warm air circulation pipe 9 are connected to the U and V ports of the 20-way valve, respectively. The fifth water pump 92 and the indoor heating core 91 are connected in series on warm air circulation pipe 9. The two ports of air conditioning heating circulation pipe 52 are connected to the W and X ports of the 20-way valve, respectively. The first heat exchanger 53 is connected in series on air conditioning heating circulation pipe 52.

[0056] Furthermore, in the control method of this vehicle thermal management system, the first threshold array includes a first temperature threshold, a second temperature threshold, a third temperature threshold, and a fourth temperature threshold that increase sequentially. In one specific implementation, the first temperature threshold ST1 = 80℃, the second temperature threshold ST2 = 90℃, the third temperature threshold ST3 = 100℃, and the fourth temperature threshold ST4 = 110℃.

[0057] Furthermore, in the control method of this vehicle thermal management system, the connection state of each valve port of the switching valve group is controlled according to the first water temperature, the second water temperature, and the first threshold array, including:

[0058] When both the first water temperature and the second water temperature are less than or equal to the first temperature threshold, the two corresponding valve ports of the cylinder block circulation pipe 1, cylinder head circulation pipe 2, first heat dissipation circulation pipe 3, second heat dissipation circulation pipe 4, and air conditioning circulation pipe 5 are connected to each other.

[0059] In other words, during summer, when only the engine is running, if the coolant temperature at the outlet of the engine cylinder head 21 and the coolant temperature at the outlet of the engine block 11 are both less than or equal to ST1, the cylinder head circulation pipe 2 and the engine block circulation pipe 1 will both circulate on their own, and neither the engine cylinder head 21 nor the engine block 11 will need to dissipate heat.

[0060] When the first water temperature is greater than the first temperature threshold and less than or equal to the second temperature threshold, and the second water temperature is less than or equal to the first temperature threshold, the valve ports corresponding to the cylinder head circulation pipe 2 and the first heat dissipation circulation pipe 3 are connected to each other, and the two valve ports corresponding to the cylinder block circulation pipe 1, the second heat dissipation circulation pipe 4 and the air conditioning circulation pipe 5 are connected to each other.

[0061] In other words, during summer, when only the engine is running, if the coolant temperature at the engine cylinder head 21 is greater than ST1 and less than or equal to ST2, and the coolant temperature at the engine block 11 is less than or equal to ST1, the cylinder head circulation pipe 2 and the first cooling circulation pipe 3 are connected in series, the cylinder block circulation pipe 1 circulates on its own, the engine cylinder head 21 is cooled through the first radiator 31, and the engine block 11 does not need to be cooled.

[0062] When the first water temperature is greater than the second temperature threshold and less than or equal to the third temperature threshold, and the second water temperature is greater than the first temperature threshold and less than or equal to the second temperature threshold, the valve ports corresponding to the cylinder head circulation pipe 2 and the first heat dissipation circulation pipe 3 are connected to each other, the valve ports corresponding to the cylinder block circulation pipe 1 and the second heat dissipation circulation pipe 4 are connected to each other, and the two valve ports corresponding to the air conditioning circulation pipe 5 are connected to each other.

[0063] In other words, during summer, when the engine is running, and the coolant temperature at the outlet of the engine cylinder head 21 is greater than ST2 and less than or equal to ST3, and the coolant temperature at the outlet of the engine block 11 is greater than ST1 and less than or equal to ST2, the cylinder head circulation pipe 2 and the first cooling circulation pipe 3 are connected in series, and the cylinder block circulation pipe 1 and the second cooling circulation pipe 4 are connected in series. The engine cylinder head 21 is cooled through the first radiator 31, and the engine block 11 is cooled through the second radiator 41.

[0064] When the first water temperature is greater than the third temperature threshold and less than or equal to the fourth temperature threshold, and the second water temperature is greater than the second temperature threshold and less than or equal to the third temperature threshold, the valve ports corresponding to the cylinder block circulation pipe 1, cylinder head circulation pipe 2, first heat dissipation circulation pipe 3 and second heat dissipation circulation pipe 4 are all connected to each other; and the two valve ports corresponding to the air conditioning circulation pipe 5 are connected to each other.

[0065] In other words, in summer, when only the engine is running, when the water temperature at the engine cylinder head 21 is greater than ST3 and less than or equal to ST4, and the water temperature at the engine block 11 is greater than ST2 and less than or equal to ST3, the first cooling circulation pipe 3, the cylinder head circulation pipe 2, the cylinder block circulation pipe 1, and the second cooling circulation pipe 4 are connected in series, and the engine cylinder head 21 and the cylinder block are simultaneously cooled through the first radiator 31 and the second radiator 41.

[0066] When the first water temperature is greater than the fourth temperature threshold and the second water temperature is greater than the third temperature threshold, the valve ports corresponding to the cylinder head circulation pipe 2 and the air conditioning circulation pipe 5 are connected to each other, and the valve ports corresponding to the cylinder block circulation pipe 1, the first heat dissipation circulation pipe 3 and the second heat dissipation circulation pipe 4 are connected to each other.

[0067] In other words, in summer, when only the engine is running, when the coolant temperature at the engine cylinder head 21 is greater than ST4 and the coolant temperature at the engine block 11 is greater than ST3, the air conditioning cooling circulation pipe 51 and the cylinder head circulation pipe 2 are connected in series, and the cylinder block circulation pipe 1, the first cooling circulation pipe 3, and the second cooling circulation pipe 4 are connected in series. The engine cylinder head 21 is cooled by the air conditioning system, and the engine block 11 is cooled by the first radiator 31 and the second radiator 41.

[0068] Furthermore, in the control method of the vehicle thermal management system, the connection state of each valve port of the switching valve group is controlled according to the third water temperature and the first threshold array, including:

[0069] When the third water temperature is less than or equal to the first temperature threshold, the two corresponding valve ports of the cylinder block circulation pipe 1, cylinder head circulation pipe 2, first heat dissipation circulation pipe 3, second heat dissipation circulation pipe 4, and air conditioning circulation pipe 5 are connected to each other.

[0070] In other words, during summer, when only the engine is running, and the average outlet water temperature of the engine cylinder head 21 and engine block 11 is less than or equal to ST1, the cylinder head circulation pipe 2 and the cylinder block circulation pipe 1 both circulate on their own, and neither the engine cylinder head 21 nor the engine block 11 needs to dissipate heat.

[0071] When the third water temperature is greater than the first temperature threshold and less than or equal to the second temperature threshold, the valve ports corresponding to the cylinder head circulation pipe 2 and the first heat dissipation circulation pipe 3 are connected to each other, the valve ports corresponding to the cylinder block circulation pipe 1 and the second heat dissipation circulation pipe 4 are connected to each other, and the two valve ports corresponding to the air conditioning circulation pipe 5 are connected to each other.

[0072] In other words, in summer, when only the engine is running, when the average outlet water temperature of the engine cylinder head 21 and engine block 11 is greater than ST1 and less than or equal to ST2, the cylinder head circulation pipe 2 and the first cooling circulation pipe 3 are connected in series, the cylinder block circulation pipe 1 and the second cooling circulation pipe 4 are connected in series, the engine cylinder head 21 is cooled through the first radiator 31, and the engine block 11 is cooled through the second radiator 41.

[0073] When the third water temperature is greater than the second temperature threshold and less than or equal to the third temperature threshold, the valve ports corresponding to cylinder block circulation pipe 1, cylinder head circulation pipe 2, first heat dissipation circulation pipe 3 and second heat dissipation circulation pipe 4 are all connected to each other; and the two valve ports corresponding to air conditioning circulation pipe 5 are connected to each other.

[0074] In other words, in summer, when only the engine is running, when the average outlet water temperature of the engine cylinder head 21 and engine block 11 is greater than ST2 and less than or equal to ST3, the first cooling circulation pipe 3, the cylinder head circulation pipe 2, the block circulation pipe 1, and the second cooling circulation pipe 4 are connected in series, and the engine cylinder head 21 and the block are simultaneously cooled through the first radiator 31 and the second radiator 41.

[0075] When the third water temperature is greater than the third temperature threshold and less than or equal to the fourth temperature threshold, the valve ports corresponding to the cylinder head circulation pipe 2 and the air conditioning circulation pipe 5 are connected to each other, the valve ports corresponding to the cylinder block circulation pipe 1 and the first heat dissipation circulation pipe 3 are connected to each other, and the two valve ports corresponding to the second heat dissipation circulation pipe 4 are connected to each other.

[0076] In other words, during summer, when only the engine is running, and the average outlet water temperature of the engine cylinder head 21 and engine block 11 is greater than ST3 and less than or equal to ST4, the air conditioning cooling circulation pipe 51 and the cylinder head circulation pipe 2 are connected in series, and the cylinder block circulation pipe 1 and the first heat dissipation circulation pipe 3 are connected in series. The engine cylinder head 21 dissipates heat through the air conditioning system, and the engine block 11 dissipates heat through the first radiator 31.

[0077] When the third water temperature is greater than the fourth temperature threshold, the two valve ports corresponding to the cylinder head circulation pipe 2, the cylinder block circulation pipe 1, and the air conditioning circulation pipe 5 are all connected to each other, and the two valve ports corresponding to the first heat dissipation circulation pipe 3 and the second heat dissipation circulation pipe 4 are each connected to each other.

[0078] In other words, during the summer, when only the engine is running, and the average outlet water temperature of the engine cylinder head 21 and engine block 11 is greater than ST4, the air conditioning cooling circulation pipe 51, cylinder head circulation pipe 2, and cylinder block circulation pipe 1 are connected in series, and the engine cylinder head 21 and cylinder block are cooled through the air conditioning system.

[0079] Furthermore, in the control method of this vehicle thermal management system, the second threshold array includes a fifth temperature threshold, a sixth temperature threshold, a seventh temperature threshold, and an eighth temperature threshold that increase sequentially. In one specific implementation, the fifth temperature threshold WT1 = 60℃, the sixth temperature threshold WT2 = 70℃, the seventh temperature threshold WT3 = 80℃, and the eighth temperature threshold WT4 = 90℃. In addition, the vehicle thermal management system also includes an independently configured heater circulation pipe 9, which contains a heater core. The heater circulation pipe 9 is used to transfer waste heat from the engine to the passenger compartment to achieve the heating function.

[0080] Furthermore, in the control method of the vehicle thermal management system, the connection state of each valve port of the switching valve group is controlled according to the first water temperature, the second water temperature, and the second threshold array, including:

[0081] When the first water temperature and the second water temperature are both less than or equal to the fifth temperature threshold, the two valve ports corresponding to the cylinder block circulation pipe 1, cylinder head circulation pipe 2, first heat dissipation circulation pipe 3, and second heat dissipation circulation pipe 4 are connected to each other; and the valve ports corresponding to the heater circulation pipe 9 and the air conditioning circulation pipe 5 are connected to each other.

[0082] In other words, during winter and when only the engine is running, when the coolant temperature of the engine cylinder head 21 and engine block 11 is less than or equal to WT1, the cylinder head circulation pipe 2 and the cylinder block circulation pipe 1 circulate on their own, and the heater circulation pipe 9 and the air conditioning heating circulation pipe 52 are connected in series. The engine cylinder head 21 and engine block 11 do not need to dissipate heat, and the cab is heated by the air conditioning system.

[0083] When the first water temperature is greater than the fifth temperature threshold and less than or equal to the sixth temperature threshold, and the second water temperature is less than or equal to the fifth temperature threshold, the valve ports corresponding to the cylinder head circulation pipe 2 and the heater circulation pipe 9 are connected to each other. In addition, the two valve ports corresponding to the cylinder block circulation pipe 1, the first heat dissipation circulation pipe 3, the second heat dissipation circulation pipe 4 and the air conditioning circulation pipe 5 are connected to each other.

[0084] In other words, in winter, when only the engine is running, when the water temperature at the engine cylinder head 21 is greater than WT1 and less than or equal to WT2, and the water temperature at the engine block 11 is less than or equal to WT1, the cylinder head circulation pipe 2 and the heater circulation pipe 9 are connected in series, the cylinder block circulation pipe 1 circulates on its own, the engine block 11 does not need to be cooled, and the cab is heated by the heat dissipation of the engine cylinder head 21.

[0085] When the first water temperature is greater than the sixth temperature threshold and less than or equal to the seventh temperature threshold, and the second water temperature is greater than the fifth temperature threshold and less than or equal to the sixth temperature threshold, the valve ports corresponding to the cylinder head circulation pipe 2, the cylinder block circulation pipe 1, and the heater circulation pipe 9 are all connected to each other, and the valve ports corresponding to the first heat dissipation circulation pipe 3, the second heat dissipation circulation pipe 4, and the air conditioning circulation pipe 5 are all connected to each other.

[0086] In other words, in winter, when only the engine is running, when the water temperature at the outlet of the engine cylinder head 21 is greater than WT2 and less than or equal to WT3, and the water temperature at the outlet of the engine block 11 is greater than WT1 and less than or equal to WT2, the cylinder head circulation pipe 2, the cylinder block circulation pipe 1, and the heater circulation pipe 9 are connected in series, and the cab is heated by the heat dissipation of the engine cylinder head 21 and the engine block 11.

[0087] When the first water temperature is greater than the seventh temperature threshold and less than or equal to the eighth temperature threshold, and the second water temperature is greater than the sixth temperature threshold and less than or equal to the seventh temperature threshold, the valve ports corresponding to the cylinder head circulation pipe 2 and the first heat dissipation circulation pipe 3 are connected to each other, the valve ports corresponding to the cylinder block circulation pipe 1 and the heater circulation pipe 9 are connected to each other, and the two valve ports corresponding to the second heat dissipation circulation pipe 4 and the air conditioning circulation pipe 5 are connected to each other.

[0088] In other words, in winter, when only the engine is running, when the coolant temperature at the engine cylinder head 21 is greater than WT3 and less than or equal to WT4, and the coolant temperature at the engine block 11 is greater than WT2 and less than or equal to WT3, the cylinder head circulation pipe 2 and the first cooling circulation pipe 3 are connected in series, and the cylinder block circulation pipe 1 and the heater circulation pipe 9 are connected in series. The cab is heated by the cooling of the engine block 11, and the engine cylinder head 21 is cooled by the first radiator 31.

[0089] When the first water temperature is greater than the eighth temperature threshold and the second water temperature is greater than the seventh temperature threshold, the valve ports corresponding to cylinder head circulation pipe 2, cylinder block circulation pipe 1, first heat dissipation circulation pipe 3, second heat dissipation circulation pipe 4, heater circulation pipe 9 and air conditioning circulation pipe 5 are all connected to each other.

[0090] In other words, in winter, when only the engine is running, when the coolant temperature at the engine cylinder head 21 is greater than WT4 and the coolant temperature at the engine block 11 is greater than WT3, the cylinder head circulation pipe 2, the engine block circulation pipe 1, the heater circulation pipe 9, the first cooling circulation pipe 3, and the second cooling circulation pipe 4 are connected in series. The cab is simultaneously heated by the cooling of the engine cylinder head 21 and the engine block 11, and the engine cylinder head 21 and the engine block 11 are simultaneously cooled by the first radiator 31 and the second radiator 41.

[0091] Furthermore, in the control method of the vehicle thermal management system, the connection state of each valve port of the switching valve group is controlled according to the third water temperature and the second threshold array, including:

[0092] When the third water temperature is less than or equal to the fifth temperature threshold, the two valve ports corresponding to the cylinder block circulation pipe 1, cylinder head circulation pipe 2, first heat dissipation circulation pipe 3, and second heat dissipation circulation pipe 4 are connected to each other; and the valve ports corresponding to the heater circulation pipe 9 and air conditioning circulation pipe 5 are also connected to each other.

[0093] In other words, during winter and when only the engine is running, when the average outlet water temperature of the engine cylinder head 21 and engine block 11 is less than or equal to WT1, the cylinder head circulation pipe 2 and the cylinder block circulation pipe 1 are self-circulating, the heater circulation pipe 9 and the air conditioning heating circulation pipe 52 are connected in series, the engine cylinder head 21 and engine block 11 do not need to dissipate heat, and the cab is heated by the air conditioning system.

[0094] When the third water temperature is greater than the fifth temperature threshold and less than or equal to the sixth temperature threshold, the valve ports corresponding to the cylinder head circulation pipe 2, cylinder block circulation pipe 1 and heater circulation pipe 9 are all connected to each other, and the valve ports corresponding to the first heat dissipation circulation pipe 3, the second heat dissipation circulation pipe 4 and the air conditioning circulation pipe 5 are connected.

[0095] In other words, in winter, when only the engine is running, when the average outlet water temperature of the engine cylinder head 21 and engine block 11 is greater than WT1 and less than or equal to WT2, the cylinder head circulation pipe 2, the cylinder block circulation pipe 1, and the heater circulation pipe 9 are connected in series, and the cab is heated by the heat dissipation of the engine cylinder head 21 and engine block 11.

[0096] When the third water temperature is greater than the sixth temperature threshold and less than or equal to the seventh temperature threshold, the valve ports corresponding to the cylinder head circulation pipe 2 and the heater circulation pipe 9 are connected to each other, the valve ports corresponding to the cylinder block circulation pipe 1 and the second heat dissipation circulation pipe 4 are connected to each other, and the two valve ports corresponding to the first heat dissipation circulation pipe 3 and the air conditioning circulation pipe 5 are connected to each other.

[0097] In other words, in winter, when only the engine is running, when the average outlet water temperature of the engine cylinder head 21 and engine block 11 is greater than WT2 and less than or equal to WT3, the cylinder head circulation pipe 2 and the heater circulation pipe 9 are connected in series, and the cylinder block circulation pipe 1 and the second heat dissipation circulation pipe 4 are connected in series. The cab is heated by the heat dissipation of the engine cylinder head 21, and the engine block 11 is cooled by the second radiator 41.

[0098] When the first water temperature is greater than the seventh temperature threshold and less than or equal to the eighth temperature threshold, the valve ports corresponding to cylinder head circulation pipe 2, first heat dissipation circulation pipe 3 and heater circulation pipe 9 are all connected to each other, the valve ports corresponding to cylinder block circulation pipe 1 and second heat dissipation circulation pipe 4 are connected to each other; and the two valve ports corresponding to air conditioning circulation pipe 5 are connected to each other.

[0099] In other words, in winter, when only the engine is running, and the average outlet water temperature of the engine cylinder head 21 and engine block 11 is greater than WT3 and less than or equal to WT4, the cylinder head circulation pipe 2, the heater circulation pipe 9, and the first cooling circulation pipe 3 are connected in series, and the cylinder block circulation pipe 1 and the second cooling circulation pipe 4 are connected in series. The cab is heated by the heat dissipation of the engine cylinder head 21, and the engine cylinder head 21 is simultaneously cooled by the first radiator 31, while the engine block 11 is cooled by the second radiator 41.

[0100] When the first water temperature is greater than the eighth temperature threshold and the second water temperature is greater than the seventh temperature threshold, the valve ports corresponding to cylinder head circulation pipe 2, cylinder block circulation pipe 1, first heat dissipation circulation pipe 3, second heat dissipation circulation pipe 4, heater circulation pipe 9 and air conditioning circulation pipe 5 are all connected to each other.

[0101] In other words, in winter, when only the engine is running, when the average outlet water temperature of the engine cylinder head 21 and engine block 11 is greater than WT4, the cylinder head circulation pipe 2, the engine block circulation pipe 1, the heater circulation pipe 9, the first cooling circulation pipe 3, and the second cooling circulation pipe 4 are connected in series. The cab is simultaneously heated by the heat dissipation of the engine cylinder head 21 and engine block 11, and the engine cylinder head 21 and engine block 11 are simultaneously cooled by the first radiator 31 and the second radiator 41.

[0102] Furthermore, in the control method of the vehicle thermal management system, the vehicle thermal management system also includes an independently set battery circulation pipeline 6 and motor circulation pipeline 7. The battery circulation pipeline 6 and motor circulation pipeline 7 are respectively connected to the corresponding valve ports of the switching valve group. The vehicle's battery 61 and motor 71 are respectively set in the battery circulation pipeline 6 and motor circulation pipeline 7.

[0103] Furthermore, in the control method of the vehicle thermal management system, when the motor 71 is in operation, the connection status of each valve port of the switching valve group is controlled according to the outlet water temperature information and the first threshold array, including:

[0104] When both the first water temperature and the second water temperature are less than or equal to the first temperature threshold, the two corresponding valve ports of the cylinder block circulation pipe 1, cylinder head circulation pipe 2, first heat dissipation circulation pipe 3, second heat dissipation circulation pipe 4, and air conditioning circulation pipe 5 are connected to each other.

[0105] In other words, in summer, when the engine and motor 71 are running simultaneously, when the coolant temperature at the outlet of the engine cylinder head 21 and the coolant temperature at the outlet of the engine block 11 are both less than or equal to ST1, the cylinder head circulation pipe 2 and the cylinder block circulation pipe 1 are self-circulating, the battery circulation pipe 6 and the air conditioning cooling circulation pipe 51 are connected in series, the motor circulation pipe 7 and the first heat dissipation circulation pipe 3 are connected in series, the engine cylinder head 21 and the engine block 11 do not need to be cooled, the battery 61 is cooled through the air conditioning system, and the motor 71 is cooled through the first radiator 31.

[0106] When the first water temperature is greater than the first temperature threshold and less than or equal to the second temperature threshold, and the second water temperature is less than or equal to the first temperature threshold, the valve ports corresponding to the cylinder head circulation pipe 2 and the second heat dissipation circulation pipe 4 are connected to each other, the two valve ports corresponding to the cylinder block circulation pipe 1 are connected to each other, the valve ports corresponding to the battery circulation pipe 6 and the air conditioning circulation pipe 5 are connected to each other, and the valve ports corresponding to the motor circulation pipe 7 and the first heat dissipation circulation pipe 3 are connected to each other.

[0107] In other words, in summer, when the engine and motor 71 are running simultaneously, when the water temperature at the engine cylinder head 21 is greater than ST1 and less than or equal to ST2, and the water temperature at the engine block 11 is less than or equal to ST1, the battery circulation pipe 6 and the air conditioning cooling circulation pipe 51 are connected in series, the cylinder head circulation pipe 2 and the second heat dissipation circulation pipe 4 are connected in series, the motor circulation pipe 7 and the first heat dissipation circulation pipe 3 are connected in series, and the cylinder block circulation pipe 1 is self-circulating. The engine cylinder head 21 is cooled by the second radiator 41, the battery 61 is cooled by the air conditioning system, and the motor 71 is cooled by the first radiator 31.

[0108] When the first water temperature is greater than the second temperature threshold and less than or equal to the third temperature threshold, and the second water temperature is greater than the first temperature threshold and less than or equal to the second temperature threshold, the valve ports corresponding to the cylinder head circulation pipe 2 and the second heat dissipation circulation pipe 4 are connected to each other, the valve ports corresponding to the cylinder block circulation pipe 1, the motor circulation pipe 7 and the first heat dissipation circulation pipe 3 are connected, and the valve ports corresponding to the battery circulation pipe 6 and the air conditioning circulation pipe 5 are connected to each other.

[0109] In other words, in summer, when the engine and motor 71 are running simultaneously, when the water temperature at the outlet of the engine cylinder head 21 is greater than ST2 and less than or equal to ST3, and the water temperature at the outlet of the engine block 11 is greater than ST1 and less than or equal to ST2, the battery circulation pipe 6 and the air conditioning cooling circulation pipe 51 are connected in series, the cylinder head circulation pipe 2 and the second heat dissipation circulation pipe 4 are connected in series, the cylinder block circulation pipe 1, the motor circulation pipe 7 and the first heat dissipation circulation pipe 3 are connected in series, the engine cylinder head 21 is cooled through the second radiator 41, the battery 61 is cooled through the air conditioning system, and the engine block 11 and the motor 71 are cooled through the first radiator 31.

[0110] When the first water temperature is greater than the third temperature threshold and less than or equal to the fourth temperature threshold, and the second water temperature is greater than the second temperature threshold and less than or equal to the third temperature threshold, the valve ports corresponding to the cylinder block circulation pipe 1, cylinder head circulation pipe 2, and second heat dissipation circulation pipe 4 are all connected to each other; the valve ports corresponding to the motor circulation pipe 7 and the first heat dissipation circulation pipe 3 are all connected to each other, and the valve ports corresponding to the battery circulation pipe 6 and the air conditioning circulation pipe 5 are all connected to each other.

[0111] In other words, during summer, when the engine and motor 71 are running simultaneously, and the coolant temperature at the engine block 11 is greater than ST2 and less than or equal to ST3, the battery circulation pipe 6 and the air conditioning cooling circulation pipe 51 are connected in series; the cylinder head circulation pipe 2, the cylinder block circulation pipe 1, and the second cooling circulation pipe 4 are connected in series; and the motor circulation pipe 7 and the first cooling circulation pipe 3 are connected in series. The engine cylinder head 21 and engine block 11 are cooled by the second radiator 41, the battery 61 is cooled by the air conditioning system, and the motor 71 is cooled by the first radiator 31.

[0112] When the first water temperature is greater than the fourth temperature threshold and the second water temperature is greater than the third temperature threshold, the valve ports corresponding to the cylinder head circulation pipe 2, the battery circulation pipe 6 and the air conditioning circulation pipe 5 are connected to each other, and the valve ports corresponding to the cylinder block circulation pipe 1 and the second heat dissipation circulation pipe 4 are connected to each other; in addition, the valve ports corresponding to the motor circulation pipe 7 and the first heat dissipation circulation pipe 3 are connected to each other.

[0113] In other words, in summer, when the engine and motor 71 are running simultaneously, when the coolant temperature at the engine cylinder head 21 is greater than ST4 and the coolant temperature at the engine block 11 is greater than ST3, the cylinder head circulation pipe 2, the battery circulation pipe 6, and the air conditioning cooling circulation pipe 51 are connected in series, the cylinder block circulation pipe 1 and the second cooling circulation pipe 4 are connected in series, the motor circulation pipe 7 and the first cooling circulation pipe 3 are connected in series, the battery 61 and the engine cylinder head 21 are cooled through the air conditioning system, the engine block 11 is cooled through the second radiator 41, and the motor 71 is cooled through the first radiator 31.

[0114] When the third water temperature is less than or equal to the first temperature threshold, the valve ports corresponding to the cylinder block circulation pipe 1 and the cylinder head circulation pipe 2 are connected to each other; the valve ports corresponding to the battery circulation pipe 6 and the air conditioning circulation pipe 5 are connected to each other; the valve ports corresponding to the motor circulation pipe 7 and the first heat dissipation circulation pipe 3 are connected to each other; and the two valve ports corresponding to the second heat dissipation circulation pipe 4 are connected to each other.

[0115] In other words, in summer, when the engine and motor 71 are running simultaneously, when the average outlet water temperature of the engine cylinder head 21 and engine block 11 is less than or equal to ST1, the cylinder head circulation pipe 2 and the cylinder block circulation pipe 1 are self-circulating, the battery circulation pipe 6 and the air conditioning cooling circulation pipe 51 are connected in series, the motor circulation pipe 7 and the first heat dissipation circulation pipe 3 are connected in series, the engine cylinder head 21 and the engine block 11 do not need to be cooled, the battery 61 is cooled through the air conditioning system, and the motor 71 is cooled through the first radiator 31.

[0116] When the third water temperature is greater than the first temperature threshold and less than or equal to the second temperature threshold, the valve ports corresponding to the cylinder head circulation pipe 2, the cylinder block circulation pipe 1, and the second heat dissipation circulation pipe 4 are all connected to each other, and the valve ports corresponding to the battery circulation pipe 6 and the air conditioning circulation pipe 5 are all connected to each other; in addition, the valve ports corresponding to the motor circulation pipe 7 and the first heat dissipation circulation pipe 3 are all connected to each other.

[0117] In other words, in summer, when the engine and motor 71 are running simultaneously, when the average outlet water temperature of the engine cylinder head 21 and engine block 11 is greater than ST1 and less than or equal to ST2, the cylinder head circulation pipe 2, the cylinder block circulation pipe 1, and the second cooling circulation pipe 4 are connected in series, the battery circulation pipe 6 and the air conditioning cooling circulation pipe 51 are connected in series, the motor circulation pipe 7 and the first cooling circulation pipe 3 are connected in series, the engine cylinder head 21 and engine block 11 are cooled by the second radiator 41, the battery 61 is cooled by the air conditioning system, and the motor 71 is cooled by the first radiator 31.

[0118] When the third water temperature is greater than the second temperature threshold and less than or equal to the third temperature threshold, the valve ports corresponding to the cylinder head circulation pipe 2, the motor circulation pipe 7, and the first heat dissipation circulation pipe 3 are all connected to each other; the valve ports corresponding to the cylinder block circulation pipe 1 and the second heat dissipation circulation pipe 4 are all connected to each other; and the valve ports corresponding to the battery circulation pipe 6 and the air conditioning circulation pipe 5 are all connected to each other.

[0119] In other words, in summer, when the engine and motor 71 are running simultaneously, and the average outlet water temperature of the engine cylinder head 21 and engine block 11 is greater than ST2 and less than or equal to ST3, the cylinder head circulation pipe 2, motor circulation pipe 7, and first cooling circulation pipe 3 are connected in series, the cylinder block circulation pipe 1 and second cooling circulation pipe 4 are connected in series, the battery circulation pipe 6 and air conditioning cooling circulation pipe 51 are connected in series, the engine cylinder head 21 and motor 71 are cooled through the first radiator 31, the engine block 11 is cooled through the second radiator 41, and the battery 61 is cooled through the air conditioning system.

[0120] When the third water temperature is greater than the third temperature threshold and less than or equal to the fourth temperature threshold, the valve ports corresponding to the cylinder head circulation pipe 2, the battery circulation pipe 6 and the air conditioning circulation pipe 5 are all connected to each other, the valve ports corresponding to the cylinder block circulation pipe 1 and the second heat dissipation circulation pipe 4 are all connected to each other, and the valve ports corresponding to the motor circulation pipe 7 and the first heat dissipation circulation pipe 3 are all connected to each other.

[0121] In other words, in summer, when the engine and motor 71 are running simultaneously, when the average outlet water temperature of the engine cylinder head 21 and engine block 11 is greater than ST3 and less than or equal to ST4, the cylinder head circulation pipe 2, battery circulation pipe 6, and air conditioning cooling circulation pipe 51 are connected in series, the cylinder block circulation pipe 1 and the second heat dissipation circulation pipe 4 are connected in series, the motor circulation pipe 7 and the first heat dissipation circulation pipe 3 are connected in series, the engine cylinder head 21 and battery 61 are cooled through the air conditioning system, the engine block 11 is cooled through the second radiator 41, and the motor 71 is cooled through the first radiator 31.

[0122] When the third water temperature is greater than the fourth temperature threshold, the valve ports corresponding to cylinder head circulation pipe 2, cylinder block circulation pipe 1, battery circulation pipe 6 and air conditioning circulation pipe 5 are all connected to each other, the valve ports corresponding to motor circulation pipe 7 and first heat dissipation circulation pipe 3 are all connected to each other; and the two valve ports corresponding to second heat dissipation circulation pipe 4 are connected to each other.

[0123] In other words, in summer, when the engine and motor 71 are running simultaneously, when the average outlet water temperature of the engine cylinder head 21 and engine block 11 is greater than ST3 and less than or equal to ST4, the cylinder head circulation pipe 2, battery circulation pipe 6, and air conditioning cooling circulation pipe 51 are connected in series, the cylinder block circulation pipe 1 and the second heat dissipation circulation pipe 4 are connected in series, the motor circulation pipe 7 and the first heat dissipation circulation pipe 3 are connected in series, the engine cylinder head 21 and battery 61 are cooled through the air conditioning system, the engine block 11 is cooled through the second radiator 41, and the motor 71 is cooled through the first radiator 31.

[0124] Furthermore, in the control method of this vehicle thermal management system, the vehicle thermal management system also includes a heating circulation pipeline 8, which is connected to the corresponding valve port of the switching valve group. A heater (PTC) is installed in the heating circulation pipeline 8. Specifically, the heating circulation pipeline 8 is used for low-temperature preheating of the battery 61.

[0125] Furthermore, when the motor 71 is running and the battery 61 needs heating, the connection status of each valve port of the switching valve group is controlled according to the outlet water temperature information and the second threshold array, including:

[0126] When the outlet water temperature is less than or equal to the fifth temperature threshold, the valve ports corresponding to the heating circulation pipeline 8 and the battery circulation pipeline 6 are connected to each other.

[0127] In other words, in winter, when the engine and motor 71 are running simultaneously, when the average outlet water temperature of the engine cylinder head 21 and engine block 11 is less than or equal to WT1, the battery 61 and the cab need to be heated, and the motor 71 and electronic control components 72 need to dissipate heat, the cylinder head circulation pipe 2 and the cylinder block circulation pipe 1 are self-circulating, the heater circulation pipe 9 and the motor circulation pipe 7 are connected in series, the heating circulation pipe 8 and the battery circulation pipe 6 are connected in series, the engine cylinder head 21 and the engine block 11 do not need to dissipate heat, the cab is heated by the heat dissipation of the motor 71 and electronic control components 72, and the battery 61 is heated by the heater 81.

[0128] When the average outlet water temperature of the engine cylinder head 21 and engine block 11 is less than or equal to WT1, the cab needs to be heated, and the battery 61 and motor 71 need to dissipate heat, the cylinder head circulation pipe 2 and the cylinder block circulation pipe 1 are self-circulating, and the heater circulation pipe 9, battery circulation pipe 6, and motor circulation pipe 7 are connected in series. The engine cylinder head 21 and engine block 11 do not need to dissipate heat, and the cab is heated by the heat dissipation of the battery 61 and motor 71.

[0129] When the outlet water temperature is greater than the fifth temperature threshold and less than or equal to the sixth temperature threshold, the valve ports corresponding to the battery circulation pipeline 6 and the motor circulation pipeline 7 are connected to each other.

[0130] In other words, in winter, when the engine and motor 71 are running simultaneously, when the average outlet water temperature of the engine cylinder head 21 and engine block 11 is greater than WT1 and less than or equal to WT2, the battery 61 and the cab need to be heated, and the motor 71 needs to dissipate heat. The cylinder head circulation pipe 2, the cylinder block circulation pipe 1, and the heater circulation pipe 9 are connected in series, and the battery circulation pipe 6 and the motor circulation pipe 7 are connected in series. The cab is heated by the heat dissipation of the engine cylinder head 21 and engine block 11, and the battery 61 is heated by the heat dissipation of the motor 71.

[0131] When the average outlet water temperature of the engine cylinder head 21 and engine block 11 is greater than WT1 and less than or equal to WT2, the cab needs to be heated, and the battery 61 and motor 71 need to be cooled, the cylinder head circulation pipe 2, the cylinder block circulation pipe 1, the motor circulation pipe 7, and the heater circulation pipe 9 are connected in series, and the battery circulation pipe 6 and the first cooling circulation pipe 3 are connected in series. The cab is heated through the cooling of the engine cylinder head 21, engine block 11, and motor 71, and the battery 61 is cooled through the first radiator 31.

[0132] When the outlet water temperature is greater than the sixth temperature threshold and less than or equal to the seventh temperature threshold, the valve ports corresponding to the cylinder circulation pipe 1 and the battery circulation pipe 6 are connected to each other.

[0133] In other words, in winter, when the engine and motor 71 are running simultaneously, when the average outlet water temperature of the engine cylinder head 21 and engine block 11 is greater than WT2 and less than or equal to WT3, the battery 61 and the cab need to be heated, and the motor 71 needs to dissipate heat, the cylinder head circulation pipe 2 and the heater circulation pipe 9 are connected in series, the cylinder block circulation pipe 1 and the battery circulation pipe 6 are connected in series, and the motor circulation pipe 7 and the first heat dissipation circulation pipe 3 are connected in series. The cab is heated by the heat dissipation of the engine cylinder head 21, the battery 61 is heated by the heat dissipation of the engine block 11, and the motor 71 dissipates heat through the first radiator 31.

[0134] When the average outlet water temperature of the engine cylinder head 21 and engine block 11 is greater than WT2 and less than or equal to WT3, the cab needs to be heated, and the battery 61 and motor 71 need to be cooled, the cylinder head circulation pipe 2, the cylinder block circulation pipe 1, and the heater circulation pipe 9 are connected in series, and the battery circulation pipe 6, the motor circulation pipe 7, and the first cooling circulation pipe 3 are connected in series. The cab is heated by the cooling of the engine cylinder head 21 and engine block 11, and the battery 61 and motor 71 are cooled by the first radiator 31.

[0135] When the outlet water temperature is greater than the seventh temperature threshold and less than or equal to the eighth temperature threshold, the valve ports corresponding to cylinder head circulation pipe 2, heater circulation pipe 9 and battery circulation pipe 6 are all connected to each other.

[0136] In other words, in winter, when the engine and motor 71 are running simultaneously, when the average outlet water temperature of the engine cylinder head 21 and engine block 11 is greater than WT3 and less than or equal to WT4, the battery 61 and the cab need to be heated, and the motor 71 needs to be cooled, the cylinder head circulation pipe 2, the heater circulation pipe 9, and the battery circulation pipe 6 are connected in series, the cylinder block circulation pipe 1 and the second cooling circulation pipe 4 are connected in series, and the motor circulation pipe 7 and the first cooling circulation pipe 3 are connected in series. The cab and the battery 61 are heated through the cooling of the engine cylinder head 21, the motor 71 is cooled through the first radiator 31, and the engine block 11 is cooled through the second radiator 41.

[0137] When the average outlet water temperature of the engine cylinder head 21 and engine block 11 is greater than WT3 and less than or equal to WT4, the battery 61 and the cab need to be heated, and the motor 71 and electronic control components 72 need to be cooled, the cylinder head circulation pipe 2, the heater circulation pipe 9, and the battery circulation pipe 6 are connected in series, the cylinder block circulation pipe 1 and the second cooling circulation pipe 4 are connected in series, and the motor circulation pipe 7 and the first cooling circulation pipe 3 are connected in series. The cab and the battery 61 are heated through the cooling of the engine cylinder head 21, the motor 71 is cooled through the first radiator 31, and the engine block 11 is cooled through the second radiator 41.

[0138] When the outlet water temperature exceeds the eighth temperature threshold, the valve ports corresponding to cylinder head circulation pipe 2, heater circulation pipe 9, battery circulation pipe 6, and second heat dissipation circulation pipe 4 are all connected to each other.

[0139] In other words, in winter, when the engine and motor 71 are running simultaneously, when the average outlet water temperature of the engine cylinder head 21 and engine block 11 is greater than WT4, the battery 61 and the cab need to be heated, and the motor 71 needs to dissipate heat, the cylinder head circulation pipe 2, the cylinder block circulation pipe 1, the heater circulation pipe 9, the battery circulation pipe 6, and the second cooling circulation pipe 4 are connected in series, and the motor circulation pipe 7 and the first cooling circulation pipe 3 are connected in series. The cab and the battery 61 are heated through the cooling of the engine cylinder head 21 and the engine block 11. At the same time, the engine cylinder head 21 and the engine block 11 are also cooled through the second radiator 41, and the motor 71 is cooled through the first radiator 31.

[0140] When the average outlet water temperature of the engine cylinder head 21 and engine block 11 is greater than WT4, the battery 61 and the cab need to be heated, and the motor 71 needs to be cooled, the cylinder head circulation pipe 2, the cylinder block circulation pipe 1, the heater circulation pipe 9, the battery circulation pipe 6, and the second cooling circulation pipe 4 are connected in series, and the motor circulation pipe 7 and the first cooling circulation pipe 3 are connected in series. The cab and the battery 61 are heated through the cooling of the engine cylinder head 21 and the engine block 11. At the same time, the engine cylinder head 21 and the engine block 11 are also cooled through the second radiator 41, and the motor 71 is cooled through the first radiator 31.

[0141] It should be noted that the above-mentioned water outlet temperature can be the first water outlet temperature, the second water outlet temperature, or the third water outlet temperature.

[0142] Furthermore, in the control method of the vehicle thermal management system, a first radiator 31 is provided in the first heat dissipation circulation pipe 3, and a second radiator 41 is provided in the second heat dissipation circulation pipe 4; wherein, the first radiator 31 and the second radiator 41 are both provided inside the front compartment of the vehicle, and the first radiator 31 is located closer to the front of the vehicle than the second radiator 41.

[0143] Specifically, the first radiator 31 is located at the very front of the vehicle's front compartment, close to the air intake grille, and prioritizes heat dissipation using the low-temperature outside air; the second radiator 41 is located behind the first radiator 31 and receives air passing through the first radiator 31. Thus, by differentiating the arrangement of the first radiator 31 and the second radiator 41, the heat dissipation path can be dynamically adjusted according to different operating conditions, improving heat dissipation efficiency while avoiding energy waste.

[0144] Example 2:

[0145] Based on the control method of the vehicle thermal management system described in Embodiment 1, this embodiment also provides an electronic device. The electronic device includes a processor and a memory communicatively connected to the processor; the memory stores computer-executable instructions; the processor executes the computer-executable instructions stored in the memory to implement the control method of the vehicle thermal management system as described in Embodiment 1.

[0146] Example 3:

[0147] Based on the control method of the vehicle thermal management system described in Embodiment 1, this embodiment also provides a computer-readable storage medium storing computer-executable instructions, which, when executed by a processor, are used to implement the control method of the vehicle thermal management system as described in Embodiment 1.

[0148] While the present invention has been illustrated and described with reference to certain preferred embodiments, those skilled in the art should understand that the above description is a further detailed explanation of the invention in conjunction with specific embodiments, and should not be construed as limiting the specific implementation of the invention to these descriptions. Various changes in form and detail can be made by those skilled in the art, including several simple deductions or substitutions, without departing from the spirit and scope of the invention.

Claims

1. A control method for a vehicle thermal management system, characterized in that, The vehicle thermal management system includes: a switching valve assembly, and independently configured cylinder block circulation pipes, cylinder head circulation pipes, a first cooling circulation pipe, a second cooling circulation pipe, and an air conditioning circulation pipe. The cylinder block circulation pipe, cylinder head circulation pipe, first cooling circulation pipe, second cooling circulation pipe, and air conditioning circulation pipe are respectively connected to corresponding valve ports of the switching valve assembly. The vehicle's engine block and cylinder head are respectively located within the cylinder block circulation pipe and cylinder head circulation pipe. The control method includes: The system acquires the outlet water temperature information and ambient temperature information of the engine block and the engine cylinder head, and controls the connection state of each valve port of the switching valve group according to the outlet water temperature information and the ambient temperature information, so that the cylinder block circulation pipeline, the cylinder head circulation pipeline, the first cooling circulation pipeline, the second cooling circulation pipeline and the air conditioning circulation pipeline are each independently connected; or at least one of the cylinder block circulation pipeline and the cylinder head circulation pipeline is connected in series with at least one of the first cooling circulation pipeline, the second cooling circulation pipeline and the air conditioning circulation pipeline.

2. The control method for the vehicle thermal management system as described in claim 1, characterized in that, The step of controlling the connection status of each valve port of the switching valve group based on the outlet water temperature information and the ambient temperature information includes: The current environmental operating conditions of the vehicle are determined based on the ambient temperature information; wherein, the environmental operating conditions include summer operating conditions and winter operating conditions; If the current environmental condition is the summer condition, then the first threshold array is invoked, and the connection status of each valve port of the switching valve group is controlled according to the outlet water temperature information and the first threshold array. If the current environmental condition is the winter condition, then the second threshold array is invoked, and the connection status of each valve port of the switching valve group is controlled according to the outlet water temperature information and the second threshold array.

3. The control method for the vehicle thermal management system as described in claim 2, characterized in that, The outlet water temperature information includes a first water temperature, a second water temperature, and a third water temperature; wherein, the first water temperature is the outlet water temperature of the engine cylinder head, the second water temperature is the outlet water temperature of the engine block, and the third water temperature is the average temperature calculated based on the first and second water temperatures; and Controlling the connection status of each valve port of the switching valve group based on the outlet water temperature information and the first threshold array includes: The connection status of each valve port of the switching valve group is controlled according to the first water temperature, the second water temperature, and the first threshold array; or The connection status of each valve port of the switching valve group is controlled according to the third water temperature and the first threshold array; Controlling the connection status of each valve port of the switching valve group based on the outlet water temperature information and the second threshold array includes: The connection status of each valve port of the switching valve group is controlled according to the first water temperature, the second water temperature, and the second threshold array; or The connection status of each valve port of the switching valve group is controlled according to the third water temperature and the second threshold array.

4. The control method for the vehicle thermal management system as described in claim 3, characterized in that, The first threshold array includes a first temperature threshold, a second temperature threshold, a third temperature threshold, and a fourth temperature threshold that increase sequentially. and The step of controlling the connection state of each valve port of the switching valve group according to the first water temperature, the second water temperature, and the first threshold array includes: When both the first water temperature and the second water temperature are less than or equal to the first temperature threshold, the two valve ports corresponding to the cylinder block circulation pipe, the cylinder head circulation pipe, the first heat dissipation circulation pipe, the second heat dissipation circulation pipe and the air conditioning circulation pipe are connected to each other. When the first water temperature is greater than the first temperature threshold and less than or equal to the second temperature threshold, and the second water temperature is less than or equal to the first temperature threshold, the valve ports corresponding to the cylinder head circulation pipe and the first heat dissipation circulation pipe are connected to each other, and the two valve ports corresponding to the cylinder block circulation pipe, the second heat dissipation circulation pipe and the air conditioning circulation pipe are connected to each other. When the first water temperature is greater than the second temperature threshold and less than or equal to the third temperature threshold, and the second water temperature is greater than the first temperature threshold and less than or equal to the second temperature threshold, the valve ports corresponding to the cylinder head circulation pipe and the first heat dissipation circulation pipe are all connected to each other, the valve ports corresponding to the cylinder block circulation pipe and the second heat dissipation circulation pipe are all connected to each other, and the two valve ports corresponding to the air conditioning circulation pipe are connected to each other. When the first water temperature is greater than the third temperature threshold and less than or equal to the fourth temperature threshold, and the second water temperature is greater than the second temperature threshold and less than or equal to the third temperature threshold, the valve ports corresponding to the cylinder block circulation pipe, the cylinder head circulation pipe, the first heat dissipation circulation pipe, and the second heat dissipation circulation pipe are all connected to each other; and the two valve ports corresponding to the air conditioning circulation pipe are connected to each other. When the first water temperature is greater than the fourth temperature threshold and the second water temperature is greater than the third temperature threshold, the valve ports corresponding to the cylinder head circulation pipe and the air conditioning circulation pipe are all connected to each other, and the valve ports corresponding to the cylinder block circulation pipe, the first heat dissipation circulation pipe and the second heat dissipation circulation pipe are all connected to each other. The step of controlling the connectivity of each valve port of the switching valve group according to the third water temperature and the first threshold array includes: When the third water temperature is less than or equal to the first temperature threshold, the two valve ports corresponding to the cylinder block circulation pipe, the cylinder head circulation pipe, the first heat dissipation circulation pipe, the second heat dissipation circulation pipe and the air conditioning circulation pipe are connected to each other. When the third water temperature is greater than the first temperature threshold and less than or equal to the second temperature threshold, the valve ports corresponding to the cylinder head circulation pipe and the first heat dissipation circulation pipe are all connected to each other, the valve ports corresponding to the cylinder block circulation pipe and the second heat dissipation circulation pipe are all connected to each other; and the two valve ports corresponding to the air conditioning circulation pipe are connected to each other. When the third water temperature is greater than the second temperature threshold and less than or equal to the third temperature threshold, the valve ports corresponding to the cylinder block circulation pipe, the cylinder head circulation pipe, the first heat dissipation circulation pipe, and the second heat dissipation circulation pipe are all connected to each other; and the two valve ports corresponding to the air conditioning circulation pipe are connected to each other. When the third water temperature is greater than the third temperature threshold and less than or equal to the fourth temperature threshold, the valve ports corresponding to the cylinder head circulation pipe and the air conditioning circulation pipe are connected to each other, the valve ports corresponding to the cylinder block circulation pipe and the first heat dissipation circulation pipe are connected to each other, and the two valve ports corresponding to the second heat dissipation circulation pipe are connected to each other. When the third water temperature is greater than the fourth temperature threshold, the two valve ports corresponding to the cylinder head circulation pipe, the cylinder block circulation pipe and the air conditioning circulation pipe are all connected to each other, and the two valve ports corresponding to the first heat dissipation circulation pipe and the second heat dissipation circulation pipe are each connected to each other.

5. The control method for the vehicle thermal management system as described in claim 3, characterized in that, The second threshold array includes a fifth temperature threshold, a sixth temperature threshold, a seventh temperature threshold, and an eighth temperature threshold that increase sequentially. The vehicle thermal management system also includes an independently configured heater circulation duct, in which a heater core is installed; and The step of controlling the connection state of each valve port of the switching valve group according to the first water temperature, the second water temperature, and the second threshold array includes: When both the first water temperature and the second water temperature are less than or equal to the fifth temperature threshold, the two valve ports corresponding to the cylinder block circulation pipe, the cylinder head circulation pipe, the first heat dissipation circulation pipe, and the second heat dissipation circulation pipe are connected to each other; and the valve ports corresponding to the heater circulation pipe and the air conditioning circulation pipe are connected to each other. When the first water temperature is greater than the fifth temperature threshold and less than or equal to the sixth temperature threshold, and the second water temperature is less than or equal to the fifth temperature threshold, the valve ports corresponding to the cylinder head circulation pipe and the heater circulation pipe are connected to each other, and the two valve ports corresponding to the cylinder block circulation pipe, the first heat dissipation circulation pipe, the second heat dissipation circulation pipe and the air conditioning circulation pipe are connected to each other. When the first water temperature is greater than the sixth temperature threshold and less than or equal to the seventh temperature threshold, and the second water temperature is greater than the fifth temperature threshold and less than or equal to the sixth temperature threshold, the valve ports corresponding to the cylinder head circulation pipe, the cylinder block circulation pipe and the heater circulation pipe are all connected to each other, and the valve ports corresponding to the first heat dissipation circulation pipe, the second heat dissipation circulation pipe and the air conditioning circulation pipe are each connected to each other. When the first water temperature is greater than the seventh temperature threshold and less than or equal to the eighth temperature threshold, and the second water temperature is greater than the sixth temperature threshold and less than or equal to the seventh temperature threshold, the valve ports corresponding to the cylinder head circulation pipe and the first heat dissipation circulation pipe are connected to each other, the valve ports corresponding to the cylinder block circulation pipe and the heater circulation pipe are connected to each other, and the two valve ports corresponding to the second heat dissipation circulation pipe and the air conditioning circulation pipe are connected to each other. When the first water temperature is greater than the eighth temperature threshold and the second water temperature is greater than the seventh temperature threshold, the valve ports corresponding to the cylinder head circulation pipe, the cylinder block circulation pipe, the first heat dissipation circulation pipe, the second heat dissipation circulation pipe, the heater circulation pipe, and the air conditioning circulation pipe are all connected to each other; The step of controlling the connectivity of each valve port of the switching valve group according to the third water temperature and the second threshold array includes: When the third water temperature is less than or equal to the fifth temperature threshold, the two valve ports corresponding to the cylinder block circulation pipe, the cylinder head circulation pipe, the first heat dissipation circulation pipe, and the second heat dissipation circulation pipe are connected to each other; and the valve ports corresponding to the heater circulation pipe and the air conditioning circulation pipe are also connected to each other. When the third water temperature is greater than the fifth temperature threshold and less than or equal to the sixth temperature threshold, the valve ports corresponding to the cylinder head circulation pipe, the cylinder block circulation pipe and the heater circulation pipe are all connected to each other, and the valve ports corresponding to the first heat dissipation circulation pipe, the second heat dissipation circulation pipe and the air conditioning circulation pipe are connected. When the third water temperature is greater than the sixth temperature threshold and less than or equal to the seventh temperature threshold, the valve ports corresponding to the cylinder head circulation pipe and the heater circulation pipe are connected to each other, the valve ports corresponding to the cylinder block circulation pipe and the second heat dissipation circulation pipe are connected to each other, and the two valve ports corresponding to the first heat dissipation circulation pipe and the air conditioning circulation pipe are connected to each other. When the first water temperature is greater than the seventh temperature threshold and less than or equal to the eighth temperature threshold, the valve ports corresponding to the cylinder head circulation pipe, the first heat dissipation circulation pipe and the heater circulation pipe are all connected to each other, the valve ports corresponding to the cylinder block circulation pipe and the second heat dissipation circulation pipe are connected to each other; and the two valve ports corresponding to the air conditioning circulation pipe are connected to each other. When the first water temperature is greater than the eighth temperature threshold and the second water temperature is greater than the seventh temperature threshold, the valve ports corresponding to the cylinder head circulation pipe, the cylinder block circulation pipe, the first heat dissipation circulation pipe, the second heat dissipation circulation pipe, the heater circulation pipe, and the air conditioning circulation pipe are all connected to each other.

6. The control method for the vehicle thermal management system as described in claim 5, characterized in that, The vehicle thermal management system also includes independently configured battery circulation pipelines and motor circulation pipelines, which are respectively connected to the corresponding valve ports of the switching valve group. The vehicle's battery and motor are respectively located in the battery circulation pipelines and motor circulation pipelines. and When the motor is running, controlling the connection status of each valve port of the switching valve group according to the outlet water temperature information and the first threshold array includes: When both the first water temperature and the second water temperature are less than or equal to the first temperature threshold, the two valve ports corresponding to the cylinder block circulation pipe, the cylinder head circulation pipe, the first heat dissipation circulation pipe, the second heat dissipation circulation pipe and the air conditioning circulation pipe are connected to each other. When the first water temperature is greater than the first temperature threshold and less than or equal to the second temperature threshold, and the second water temperature is less than or equal to the first temperature threshold, the valve ports corresponding to the cylinder head circulation pipe and the second heat dissipation circulation pipe are all connected to each other, the two valve ports corresponding to the cylinder block circulation pipe are all connected to each other, the valve ports corresponding to the battery circulation pipe and the air conditioning circulation pipe are all connected to each other, and the valve ports corresponding to the motor circulation pipe and the first heat dissipation circulation pipe are all connected to each other. When the first water temperature is greater than the second temperature threshold and less than or equal to the third temperature threshold, and the second water temperature is greater than the first temperature threshold and less than or equal to the second temperature threshold, the valve ports corresponding to the cylinder head circulation pipe and the second heat dissipation circulation pipe are connected to each other, the valve ports corresponding to the cylinder block circulation pipe, the motor circulation pipe and the first heat dissipation circulation pipe are connected, and the valve ports corresponding to the battery circulation pipe and the air conditioning circulation pipe are connected to each other. When the first water temperature is greater than the third temperature threshold and less than or equal to the fourth temperature threshold, and the second water temperature is greater than the second temperature threshold and less than or equal to the third temperature threshold, the valve ports corresponding to the cylinder block circulation pipe, the cylinder head circulation pipe, and the second heat dissipation circulation pipe are all connected to each other; the valve ports corresponding to the motor circulation pipe and the first heat dissipation circulation pipe are all connected to each other; and the valve ports corresponding to the battery circulation pipe and the air conditioning circulation pipe are all connected to each other. When the first water temperature is greater than the fourth temperature threshold and the second water temperature is greater than the third temperature threshold, the valve ports corresponding to the cylinder head circulation pipe, the battery circulation pipe, and the air conditioning circulation pipe are connected to each other; the valve ports corresponding to the cylinder block circulation pipe and the second heat dissipation circulation pipe are also connected to each other; and the valve ports corresponding to the motor circulation pipe and the first heat dissipation circulation pipe are also connected to each other; or When the third water temperature is less than or equal to the first temperature threshold, the valve ports corresponding to the cylinder block circulation pipe and the cylinder head circulation pipe are connected to each other; the valve ports corresponding to the battery circulation pipe and the air conditioning circulation pipe are connected to each other; the valve ports corresponding to the motor circulation pipe and the first heat dissipation circulation pipe are connected to each other; and the two valve ports corresponding to the second heat dissipation circulation pipe are connected to each other. When the third water temperature is greater than the first temperature threshold and less than or equal to the second temperature threshold, the valve ports corresponding to the cylinder head circulation pipe, the cylinder block circulation pipe and the second heat dissipation circulation pipe are all connected to each other, the valve ports corresponding to the battery circulation pipe and the air conditioning circulation pipe are all connected to each other; and the valve ports corresponding to the motor circulation pipe and the first heat dissipation circulation pipe are all connected to each other. When the third water temperature is greater than the second temperature threshold and less than or equal to the third temperature threshold, the valve ports corresponding to the cylinder head circulation pipe, the motor circulation pipe, and the first heat dissipation circulation pipe are all connected to each other; the valve ports corresponding to the cylinder block circulation pipe and the second heat dissipation circulation pipe are all connected to each other; and the valve ports corresponding to the battery circulation pipe and the air conditioning circulation pipe are all connected to each other. When the third water temperature is greater than the third temperature threshold and less than or equal to the fourth temperature threshold, the valve ports corresponding to the cylinder head circulation pipe, the battery circulation pipe and the air conditioning circulation pipe are all connected to each other, the valve ports corresponding to the cylinder block circulation pipe and the second heat dissipation circulation pipe are all connected to each other, and the valve ports corresponding to the motor circulation pipe and the first heat dissipation circulation pipe are all connected to each other. When the third water temperature is greater than the fourth temperature threshold, the valve ports corresponding to the cylinder head circulation pipe, the cylinder block circulation pipe, the battery circulation pipe and the air conditioning circulation pipe are all connected to each other, the valve ports corresponding to the motor circulation pipe and the first heat dissipation circulation pipe are all connected to each other; and the two valve ports corresponding to the second heat dissipation circulation pipe are connected to each other.

7. The control method for the vehicle thermal management system as described in claim 6, characterized in that, The vehicle thermal management system further includes a heating circulation pipeline connected to a corresponding valve port of the switching valve assembly, wherein a heater is provided in the heating circulation pipeline; and When the motor is running and the battery needs heating, the connection status of each valve port of the switching valve group is controlled according to the outlet water temperature information and the second threshold array, including: When the outlet water temperature is less than or equal to the fifth temperature threshold, the valve ports corresponding to the heating circulation pipeline and the battery circulation pipeline are connected to each other. When the outlet water temperature is greater than the fifth temperature threshold and less than or equal to the sixth temperature threshold, the valve ports corresponding to the battery circulation pipeline and the motor circulation pipeline are connected to each other. When the outlet water temperature is greater than the sixth temperature threshold and less than or equal to the seventh temperature threshold, the valve ports corresponding to the cylinder circulation pipeline and the battery circulation pipeline are connected to each other. When the outlet water temperature is greater than the seventh temperature threshold and less than or equal to the eighth temperature threshold, the valve ports corresponding to the cylinder head circulation pipe, the heater circulation pipe, and the battery circulation pipe are all connected to each other. When the outlet water temperature is greater than the eighth temperature threshold, the valve ports corresponding to the cylinder head circulation pipe, the heater circulation pipe, the battery circulation pipe, and the second heat dissipation circulation pipe are all connected to each other.

8. The control method for the vehicle thermal management system as described in claim 7, characterized in that, The air conditioning circulation pipeline includes independently configured main air conditioning circulation pipeline, cooling air conditioning circulation pipeline, heating air conditioning circulation pipeline, a first heat exchanger, and a second heat exchanger; the cooling air conditioning circulation pipeline and the heating air conditioning circulation pipeline are respectively connected to the corresponding valve ports of the switching valve assembly; the cooling air conditioning circulation pipeline is connected to the main air conditioning circulation pipeline via the second heat exchanger; and the heating air conditioning circulation pipeline is connected to the main air conditioning circulation pipeline via the first heat exchanger. The switching valve assembly is a 22-way valve; A first radiator is provided in the first heat dissipation circulation pipeline, and a second radiator is provided in the second heat dissipation circulation pipeline; in Both the first radiator and the second radiator are located inside the front compartment of the vehicle, with the first radiator positioned closer to the front of the vehicle than the second radiator.

9. An electronic device, characterized in that, include: A processor, and a memory communicatively connected to the processor; The memory stores computer-executed instructions; The processor executes the computer execution instructions stored in the memory to implement the control method of the vehicle thermal management system as described in any one of claims 1-8.

10. A computer-readable storage medium, characterized in that, The computer-readable storage medium stores computer-executable instructions, which, when executed by a processor, are used to implement the control method of the vehicle thermal management system as described in any one of claims 1-8.

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