Exhaust Method, Terminal Device and Storage Medium of Vehicle Thermal Management System

Abstract

The present application provides an exhaust method, a terminal device and a storage medium for a vehicle thermal management system. The thermal management system includes an electric drive circuit, a battery circuit and a heating, ventilation and air conditioning (HVAC) circuit. The electric drive circuit includes a first passage, in which a radiator and a water storage bottle are provided. A first exhaust assembly is provided on the radiator and is communicated with the water storage bottle. The exhaust method includes the following steps: in response to a high-voltage power-on signal of the vehicle, obtain the power-on moment of the high-voltage power-on; based on the power-on moment, accumulate the power-on duration. When the accumulated power-on duration is less than or equal to a first preset duration, control the first passage, the battery circuit and the HVAC circuit to be communicated with each other; when the accumulated power-on duration is greater than the first preset duration, in response to a user request to start a preset thermal management mode, first connect the electric drive circuit, the battery circuit and the HVAC circuit when the vehicle is powered on, and perform pre-exhaust through the exhaust assembly in the electric drive circuit to discharge the gas in the system, ensure that there is no accumulated gas in the pipeline, and the water pump runs smoothly.

Description

Technical Field

[0001] The present application relates to the technical field of vehicle thermal management systems, and particularly relates to an exhaust method, a terminal device, and a storage medium for a vehicle thermal management system. Background Art

[0002] In recent years, the new energy vehicle industry has been accelerating its development, and the thermal management systems of new energy vehicles have received increasing attention. Due to the many functions undertaken by the thermal management systems of new energy vehicles, in the prior art, considering both energy consumption and pipeline layout, the thermal management system of electric vehicles mainly provides heat for battery heating through motor heat generation.

[0003] However, for a thermal management system arranged in this way, due to the long and curved pipelines, air is likely to accumulate in the pipelines. The accumulated air pressure causes the water pump to run idly and unable to work properly, and also reduces the heat exchange efficiency of the entire thermal management system, and even causes the entire thermal management system to fail, seriously affecting the driving experience and having an adverse impact on the performance of the whole vehicle. Summary of the Invention

[0004] In view of the above-mentioned defects or deficiencies in the prior art, the present application aims to provide an exhaust method, a terminal device, and a storage medium for a vehicle thermal management system;

[0005] In a first aspect, the present application provides an exhaust method for a vehicle thermal management system. The thermal management system includes an electric drive circuit, a battery circuit, and a heating, ventilation, and air conditioning (HVAC) circuit. The electric drive circuit includes a first passage, in which a radiator and a water storage bottle are provided. A first exhaust component is provided on the radiator, and the first exhaust component is communicated with the water storage bottle. The exhaust method includes the following steps:

[0006] In response to a high-voltage power-on signal of the vehicle, obtain the power-on moment of the high-voltage power-on;

[0007] Based on the power-on moment, accumulate the power-on duration. When the accumulated power-on duration is less than or equal to a first preset duration, control the first passage, the battery circuit, and the HVAC circuit to communicate with each other;

[0008] When the accumulated power-on duration is greater than the first preset duration, in response to a user request, start a preset thermal management mode.

[0009] According to the technical solution provided by the embodiment of the present application, the first passage includes a first branch and a main pipeline communicated with the first branch. The radiator and the water storage bottle are provided on the first branch, a first water pump and a second water pump are provided on the main pipeline, a third water pump is provided in the HVAC circuit, and a fourth water pump is provided in the battery circuit;

[0010] After the step of controlling the electric drive circuit, the battery circuit, and the HVAC circuit to be interconnected, and before the step of responding to the user request and starting the preset thermal management mode, the following steps are further included:

[0011] Set the output powers of the first water pump, the second water pump, the third water pump, and the fourth water pump to a first preset power, where the first preset power is used to maintain the residual gas volume in the thermal management system below a first preset value.

[0012] According to the technical solution provided by the embodiment of the present application, after the step of responding to the user request and starting the preset thermal management mode, the following steps are further included:

[0013] Respond to the signal of the rising liquid level in the water storage bottle and obtain the moment of the rising liquid level;

[0014] Based on the moment of the rising liquid level, accumulate the filling duration. When the accumulated filling duration is less than or equal to the first preset duration, control the first path, the battery circuit, and the HVAC circuit to be interconnected;

[0015] Set the output powers of the first water pump, the second water pump, the third water pump, and the fourth water pump to a second preset power, where the second preset power is used to maintain the residual gas volume in the thermal management system below the first preset value.

[0016] According to the technical solution provided by the embodiment of the present application, the electric drive circuit further includes a second path, and the following steps are further included:

[0017] When the accumulated filling duration is greater than the first preset duration and less than the second preset duration, control the second path, the battery circuit, and the HVAC circuit to be interconnected;

[0018] Set the output powers of the first water pump, the second water pump, the third water pump, and the fourth water pump to the second preset power to maintain the residual gas volume in the thermal management system below the first preset value.

[0019] According to the technical solution provided by the embodiment of the present application, the following steps are further included:

[0020] When the accumulated filling duration is greater than the second preset duration and less than the third preset duration, control the first path, the battery circuit, and the HVAC circuit to be interconnected;

[0021] Set the output powers of the first water pump, the second water pump, the third water pump, and the fourth water pump to the second preset power to maintain the residual gas volume in the thermal management system below the first preset value.

[0022] According to the technical solution provided by the embodiment of the present application, the following steps are further included:

[0023] When the cumulative filling duration is greater than the third preset duration and less than the fourth preset duration, control the first passage, the battery circuit, and the HVAC circuit to communicate with each other;

[0024] Turn off the first water pump, the second water pump, the third water pump, and the fourth water pump, and maintain the residual gas volume in the thermal management system below the first preset value.

[0025] According to the technical solution provided by the embodiment of the present application, the following steps are further included:

[0026] When the cumulative filling duration is greater than the fourth preset duration and less than the fifth preset duration, control the first passage, the battery circuit, and the HVAC circuit to communicate with each other;

[0027] Set the output powers of the first water pump, the second water pump, the third water pump, and the fourth water pump to the second preset power, and maintain the residual gas volume in the thermal management system below the first preset value.

[0028] According to the technical solution provided by the embodiment of the present application, the following steps are further included:

[0029] When the cumulative filling duration is greater than the fifth preset duration and less than the sixth preset duration, control the vehicle to cut off high-voltage power, and obtain the power-off moment of the high-voltage power-off;

[0030] Based on the power-off moment, accumulate the power-off duration. When the accumulated power-off duration is less than or equal to the first preset duration, control the vehicle to turn on high-voltage power. After the accumulated power-on duration is greater than the first preset duration, judge the liquid level signal in the water storage bottle. If the liquid level drops, respond to the liquid level drop signal and fill to the standard line of the water storage bottle.

[0031] In a second aspect, the present application provides a terminal device, including a memory, a processor, and a computer program stored in the memory and executable on the processor. When the processor executes the computer program, the steps of the exhaust method of the vehicle thermal management system as described in any one of the above are implemented.

[0032] In a third aspect, the present application provides a computer-readable storage medium, which has a computer program. When the computer program is executed by a processor, the steps of the exhaust method of the vehicle thermal management system as described in any one of the above are implemented.

[0033] To summarize, the present application proposes an exhaust method, terminal equipment and storage medium for a vehicle thermal management system. When the vehicle is powered on, the electric drive circuit, battery circuit and HVAC circuit are first connected, and the exhaust is performed in advance through the exhaust component in the electric drive circuit. The residual gas in the entire thermal management system is discharged into a water storage bottle by the first exhaust component of the radiator. The liquid with gas flows into the water storage bottle to achieve gas-liquid separation. The liquid circulates into the thermal management system for heat exchange, and the gas remains at the top of the water storage bottle, thereby achieving the effect of exhausting the gas in the system out of the system, ensuring that there is no gas accumulation in the pipeline, the water pump runs smoothly, and the user has a good driving experience. BRIEF DESCRIPTION OF THE DRAWINGS

[0034] Figure 1 A flowchart of the exhaust method of a vehicle thermal management system provided in an embodiment of the present application;

[0035] Figure 2 The overall schematic diagram of the automotive thermal management system provided by the embodiment of the present application;

[0036] Figure 3 This is a principle block diagram of the second embodiment of the present application.

[0037] The text annotations in the figure represent:

[0038] 1. Radiator; 2. First exhaust assembly; 3. Water storage bottle; 4. Second exhaust assembly; 5. Water heating core; 6. First water pump; 7. Third water pump; 8. Second water pump; 9. Fourth water pump; 10. Second three-way valve; 11. Five-way valve; 12. Second branch; 13. First branch; 14. Main line; 15. HVAC circuit; 16. First three-way valve; 17. Battery circuit; 18. Front motor; 19. Rear motor; 20. Battery; 700. Computer system; 701. Central processing unit (CPU); 702. Read-only memory (ROM); 703. Random access memory (RAM); 704. Bus; 705. Input / output (I / O) interface; 706. Input part; 707. Output part; 708. Storage part; 709. Communication part; 710. Drive; 711. Removable media. DETAILED DESCRIPTION

[0039] The present application is further described in detail below in conjunction with the accompanying drawings and embodiments. It is to be understood that the specific embodiments described herein are only used to explain the relevant invention, rather than to limit the invention. It is also necessary to explain that, for ease of description, only the parts related to the invention are shown in the accompanying drawings.

[0040] It should be noted that, in the absence of conflict, the embodiments and features in the embodiments of the present application can be combined with each other. The present application will be described in detail below with reference to the accompanying drawings and in combination with the embodiments.

[0041] Example 1

[0042] As mentioned in the background art, in view of the problems in the prior art, the present application proposes an exhaust method for a vehicle thermal management system. This method is applicable to the daily exhaust of a thermal management system including an electric drive circuit, a battery circuit 17, and a heating, ventilation, and air conditioning (HVAC) circuit 15. The electric drive circuit includes a first passage, in which a radiator 1 and a water storage bottle 3 are provided. A first exhaust assembly 2 is provided on the radiator 1, and the first exhaust assembly 2 is communicated with the water storage bottle 3. The exhaust method includes the following steps:

[0043] S100. In response to a high-voltage power-on signal of the vehicle, obtain the power-on moment of the high-voltage power-on;

[0044] S101. Based on the power-on moment, accumulate the power-on duration. When the accumulated power-on duration is less than or equal to a first preset duration, control the first passage, the battery circuit 17, and the HVAC circuit 15 to communicate with each other;

[0045] S102. When the accumulated power-on duration is greater than the first preset duration, in response to a user request, start a preset thermal management mode.

[0046] Please refer to Figure 2 As shown, optionally, the electric drive circuit, the battery circuit 17, and the HVAC circuit 15 are set to be connectable or disconnecable through a five-way valve 11, a first three-way valve 16, and a second three-way valve 10. The electric drive circuit includes the first passage and a second passage. A battery 20 is provided in the battery circuit 17, and the battery 20 is in the form of a battery pack water-cooled plate. When the battery needs to be heated, the five-way valve 11 is switched so that the A end and the E end are connected, the B end and the C end are connected, and the D end is blocked. The battery circuit 17 is communicated with the second passage of the electric drive circuit. The main pipeline 14 of the electric drive circuit is provided with a front motor 18 and a rear motor 19. The heat generated when the front motor 18 and the rear motor 19 work is used to heat the battery 20, reducing costs and energy consumption and improving the vehicle's endurance. When the battery 20 does not need to be heated, the five-way valve 11 is switched so that the A end is connected to the D end, the B end is connected to the E end, and the C end is blocked. The heat generated by the front motor 18 and the rear motor 19 of the electric drive circuit is dissipated to the outside through the radiator 1. At this time, the battery circuit 17 is communicated with the first passage of the electric drive circuit. Using the five-way valve 11 for connection reduces the setting of branches, simplifies the layout of the engine compartment, and saves engine compartment space.

[0047] Please refer to Figure 1As shown, when the vehicle is powered on each time, the first preset duration is 2 minutes. Within 0 - 2 minutes after the vehicle is powered on, control the first three-way valve 16 and the second three-way valve 10 to be in a one-in-two-out mode, that is, the opening degree is 50%. Synchronously switch the five-way valve 11 so that the A end is connected to the D end, the B end is connected to the E end, and the C end is cut off. At this time, turn on the water pump to start the daily exhaust process. After 2 minutes, the gas in the entire heat management system pipeline is transported to the water storage bottle 3 for gas-liquid separation. In response to the user's request, start the preset heat management mode. The heat management modes of this heat management system include a battery heating mode, a battery cooling mode, a passenger compartment cooling mode, a passenger compartment heating mode, a defrosting mode, and a motor cooling mode; when executing the user's preset heat management mode, a corresponding exhaust process will also be carried out. When the preset heat management mode is the passenger compartment heating mode, there is a water heating core 5 in the heating and ventilation circuit 15, and a second exhaust component 4 is provided on the water heating core 5. The second exhaust component 4 is also connected to the water storage bottle 3. The gas generated by the water heating core 5 is discharged into the water storage bottle 3 by the second exhaust component 4; when the preset heat management mode is the battery cooling mode and the passenger compartment cooling mode, the gas in the system is discharged into the water storage bottle 3 by the first exhaust component 2.

[0048] In a preferred embodiment, the first passage includes a first branch 13 and a main pipeline 14 connected to the first branch 13. The radiator 1 and the water storage bottle 3 are provided on the first branch 13. A first water pump 6 and a second water pump 8 are provided on the main pipeline 14. A third water pump 7 is provided in the heating and ventilation circuit 15. A fourth water pump 9 is provided in the battery circuit 17;

[0049] After the step of controlling the electric drive circuit, the battery circuit 17 and the heating and ventilation circuit 15 to communicate with each other, and before the step of responding to the user's request and starting the preset heat management mode, the following steps are further included:

[0050] Set the output powers of the first water pump 6, the second water pump 8, the third water pump 7, and the fourth water pump 9 to a first preset power, and the first preset power is used to maintain the residual gas volume in the heat management system below a first preset value.

[0051] Please refer to Figure 2As shown, optionally, the second passage also has a second branch 12. After the first branch 13 and the second branch 12 are connected in parallel, they are connected in series with the main pipeline 14 to form the entire electric drive loop. The first water pump 6, the second water pump 8, the third water pump 7, and the fourth water pump 9 are set to have a power of 65%. This operation is synchronized with the control of the five-way valve 11, the first three-way valve 16, and the second three-way valve 10. When the noise level, energy consumption level, and exhaust efficiency all meet the standards, the first preset power is selected as 65%. At this time, the noise level is low, the user's perception during driving is low, the driving experience is effectively improved, the energy consumption is low, and the exhaust effect is excellent. The first preset value is the critical value at which the gas volume in the thermal management system does not affect the effective operation of the thermal management system.

[0052] In a preferred embodiment, after the step of starting the preset thermal management mode in response to the user request, the following steps are further included:

[0053] Respond to the signal of the rising liquid level in the water storage bottle 3 and obtain the moment of the rising liquid level;

[0054] Based on the moment of the rising liquid level, accumulate the filling duration. When the accumulated filling duration is less than or equal to the first preset duration, control the first passage, the battery loop 17, and the HVAC loop 15 to communicate with each other;

[0055] Set the output power of the first water pump 6, the second water pump 8, the third water pump 7, and the fourth water pump 9 to the second preset power, and the second preset power is used to maintain the residual gas volume in the thermal management system below the first preset value.

[0056] In a certain specific scenario, the liquid level range in the water storage bottle 3 is between the MIN line and the MAX. When the liquid level line is low, it indicates that filling is required. This process is real-time monitored. If the liquid level line is low, filling is carried out in a timely manner. Once filling is completed, respond to the signal of the rising liquid level in the water storage bottle 3. Within 0 - 2 minutes after filling, control the first three-way valve 16 and the second three-way valve 10 to be in a one-in-two-out mode, that is, the opening degree is 50%. Synchronously switch the five-way valve 11 so that the A end is connected to the D end, the B end is connected to the E end, and the C end is cut off. And synchronously set the output power of the first water pump 6, the second water pump 8, the third water pump 7, and the fourth water pump 9 to the second preset power, and the second preset power is 90%.

[0057] In a preferred embodiment, the electric drive loop further includes a second passage, and the following steps are further included:

[0058] When the cumulative filling duration is greater than the first preset duration and less than the second preset duration, control the second passage, the battery circuit 17, and the HVAC circuit 15 to communicate with each other;

[0059] Set the output powers of the first water pump 6, the second water pump 8, the third water pump 7, and the fourth water pump 9 to the second preset power to maintain the residual gas volume in the thermal management system below the first preset value.

[0060] Optionally, the electric drive circuit further includes the second passage, and the radiator 1 is not provided in the second passage. When the battery needs to be heated, control the five-way valve 11, the first three-way valve 16, and the second three-way valve 10 to make the second passage, the battery circuit 17, and the HVAC circuit 15 communicate with each other. When in a certain specific scenario, the second preset duration is 3 min. Within 2 - 3 min after filling, control the first three-way valve 16 and the second three-way valve 10 to be in a one-in-two-out mode, that is, the opening degree is 50%, and simultaneously switch the five-way valve 11 so that the A end is connected to the E end, the B end is connected to the C end, and the D end is cut off. Synchronously control the output powers of the first water pump 6, the second water pump 8, the third water pump 7, and the fourth water pump 9 to be 90%.

[0061] In a preferred embodiment, the following steps are further included:

[0062] When the cumulative filling duration is greater than the second preset duration and less than the third preset duration, control the first passage, the battery circuit 17, and the HVAC circuit 15 to communicate with each other;

[0063] Set the output powers of the first water pump 6, the second water pump 8, the third water pump 7, and the fourth water pump 9 to the second preset power to maintain the residual gas volume in the thermal management system below the first preset value.

[0064] Optionally, the third preset duration is 5 min. Within 3 - 5 min after filling, control the first three-way valve 16 and the second three-way valve 10 to be in a one-in-two-out mode, that is, the opening degree is 50%, and simultaneously switch the five-way valve 11 so that the A end is connected to the D end, the B end is connected to the E end, and the C end is cut off. Synchronously control the output powers of the first water pump 6, the second water pump 8, the third water pump 7, and the fourth water pump 9 to be 90%.

[0065] In a preferred embodiment, the following steps are further included:

[0066] When the cumulative filling duration is greater than the third preset duration and less than the fourth preset duration, control the first passage, the battery circuit 17, and the HVAC circuit 15 to communicate with each other;

[0067] Turn off the first water pump 6, the second water pump 8, the third water pump 7, and the fourth water pump 9, and maintain the residual gas volume in the thermal management system below the first preset value.

[0068] Optionally, the fourth preset duration is 7 min. Within 5 - 7 min after filling, control the first three-way valve 16 and the second three-way valve 10 to be in a one-in-two-out mode, that is, the opening degree is 50%. Synchronously switch the five-way valve 11 so that the A end is connected to the D end, the B end is connected to the E end, and the C end is cut off. Synchronously control the first water pump 6, the second water pump 8, the third water pump 7, and the fourth water pump 9 to stop running.

[0069] In a preferred embodiment, the following steps are further included:

[0070] When the cumulative filling duration is greater than the fourth preset duration and less than the fifth preset duration, control the first passage, the battery circuit 17, and the HVAC circuit 15 to be interconnected;

[0071] Set the output powers of the first water pump 6, the second water pump 8, the third water pump 7, and the fourth water pump 9 to the second preset power, and maintain the residual gas volume in the thermal management system below the first preset value.

[0072] Optionally, the fifth preset duration is 10 min. Within 7 - 10 min after filling, control the first three-way valve 16 and the second three-way valve 10 to be in a one-in-two-out mode, that is, the opening degree is 50%. Synchronously switch the five-way valve 11 so that the A end is connected to the D end, the B end is connected to the E end, and the C end is cut off. Synchronously control the output powers of the first water pump 6, the second water pump 8, the third water pump 7, and the fourth water pump 9 to be 90%.

[0073] In a preferred embodiment, the following steps are further included:

[0074] When the cumulative filling duration is greater than the fifth preset duration and less than the sixth preset duration, control the vehicle to cut off high-voltage power and obtain the power-off moment of the high-voltage power-off;

[0075] Based on the power-off moment, accumulate the power-off duration. When the cumulative power-off duration is less than or equal to the first preset duration, control the vehicle to power on high-voltage. After the cumulative power-on duration is greater than the first preset duration, judge the liquid level signal in the water storage bottle 3. If the liquid level drops, respond to the liquid level drop signal and fill to the standard line of the water storage bottle 3.

[0076] Optionally, the sixth preset duration is 15 minutes. Within 10 - 15 minutes after refueling, the vehicle is powered off for 2 minutes to enter the sleep state. After 2 minutes of sleep, the vehicle is powered on again for about 3 minutes. If the liquid level signal in the water storage bottle 3 drops again, refueling is performed again until the liquid level reaches the MAX line, and then the vehicle is powered off. In this way, the residual gas volume in the entire thermal management system can be made lower than the first preset value, effectively ensuring the stable operation of the thermal management system. When the vehicle is powered on next time, only the exhaust strategy for daily operation is required, and the exhaust during each daily power-on is parallel to the exhaust after manual refueling.

[0077] Embodiment 2

[0078] Reference is made below to Figure 3 , which shows a schematic structural diagram of a computer system 700 of a terminal device or a server suitable for implementing the embodiments of the present application.

[0079] As Figure 3 shown, the computer system 700 includes a central processing unit (CPU) 701, which can perform various appropriate actions and processes according to the program stored in the read-only memory (ROM) 702 or the program loaded from the storage section 708 into the random access memory (RAM) 703. In the RAM 703, various programs and data required for the operation of the system 700 are also stored. The CPU 701, ROM 702, and RAM 703 are connected to each other via a bus 704. The input / output (I / O) interface 705 is also connected to the bus 704.

[0080] The following components are connected to the I / O interface 705: an input section 706 including a keyboard, a mouse, etc.; an output section 707 including a cathode ray tube (CRT), a liquid crystal display (LCD), etc. and a speaker, etc.; a storage section 708 including a hard disk, etc.; and a communication section 709 including a network interface card such as a LAN card, a modem, etc. The communication section 709 performs communication processing via a network such as the Internet. A drive 710 is also connected to the I / O interface 705 as needed. A removable medium 711, such as a magnetic disk, an optical disk, a magneto-optical disk, a semiconductor memory, etc., is installed on the drive 710 as needed, so that the computer program read from it can be installed into the storage section 708 as needed.

[0081] Specifically, according to the embodiments of the present disclosure, the process described above with reference to Figure 1 can be implemented as a computer software program. For example, the embodiments of the present disclosure include a computer program product, which includes a computer program tangibly contained on a machine-readable medium, and the computer program includes instructions for performing Figure 1Program code of the method. In such an embodiment, the computer program can be downloaded and installed from a network through the communication section 709, and / or installed from the removable medium 711.

[0082] The flowcharts and block diagrams in the accompanying drawings illustrate the possible architectures, functions, and operations of systems, methods, and computer program products according to various embodiments of the present invention. In this regard, each block in the flowchart or block diagram may represent a module, a program segment, or a part of code that contains one or more executable instructions for implementing the specified logical function. It should also be noted that in some alternative implementations, the functions marked in the blocks may occur in a different order than that marked in the accompanying drawings. For example, two consecutive blocks shown may actually be executed substantially in parallel, and they may sometimes be executed in the reverse order, depending on the functions involved. It should also be noted that each block in the block diagram and / or flowchart, and the combination of blocks in the block diagram and / or flowchart, can be implemented by a dedicated hardware-based system that performs the specified functions or operations, or can be implemented by a combination of dedicated hardware and computer instructions.

[0083] The second embodiment of the present application also provides a computer-readable storage medium. The computer-readable storage medium may be the computer-readable storage medium included in the device in the above embodiment; or it may exist separately and be a computer-readable storage medium not assembled into the device. The computer-readable storage medium stores one or more programs, and the one or more programs are used by one or more processors to execute the steps of the entity relationship query method in the hybrid vehicle fuel tank isolation valve industry described in the first embodiment.

[0084] Specific examples are used in this article to elaborate on the principles and implementation manners of the present application. The description of the above embodiments is only used to help understand the method and its core idea of the present application. The above are only the preferred implementation manners of the present application. It should be noted that due to the limited nature of text expression and objectively infinite specific structures, for those of ordinary skill in the art in this technical field, without departing from the principle of the present invention, several improvements, refinements, or changes can be made, or the above technical features can be combined in an appropriate manner; these improvements, refinements, changes, or combinations, or directly applying the concept and technical solution of the invention to other occasions without improvement, should all be regarded as the protection scope of the present application.

Claims

1. An exhaust method for a vehicle thermal management system, characterized in that, The thermal management system includes an electric drive circuit, a battery circuit (17), and a heating, ventilation, and air conditioning (HVAC) circuit (15). The electric drive circuit includes a first passage, which includes a first branch (13) and a main pipeline (14) communicating with the first branch (13). A radiator (1) and a water storage bottle (3) are provided on the first branch (13). A first exhaust assembly (2) is provided on the radiator (1). A first water pump (6) and a second water pump (8) are provided on the main pipeline (14). A third water pump (7) is provided in the HVAC circuit (15). A fourth water pump (9) is provided in the battery circuit (17). The first exhaust assembly (2) communicates with the water storage bottle (3). The exhaust method includes the following steps: In response to a high-voltage power-on signal of the vehicle, obtain the power-on moment of the high-voltage power-on; Based on the power-on moment, accumulate the power-on duration. When the accumulated power-on duration is less than or equal to a first preset duration, control the first passage, the battery circuit (17), and the HVAC circuit (15) to communicate with each other; When the accumulated power-on duration is greater than the first preset duration, in response to a user request, start a preset thermal management mode; After the step of controlling the electric drive circuit, the battery circuit (17), and the HVAC circuit (15) to communicate with each other and before the step of, in response to a user request, starting a preset thermal management mode, the following steps are included: Set the output powers of the first water pump (6), the second water pump (8), the third water pump (7), and the fourth water pump (9) to a first preset power, and the first preset power is used to maintain the residual gas volume in the thermal management system below a first preset value; After the step of, in response to a user request, starting a preset thermal management mode, the following steps are included: In response to a signal of the liquid level rising in the water storage bottle (3), obtain the moment when the liquid level rises; Based on the moment when the liquid level rises, accumulate the filling duration. When the accumulated filling duration is less than or equal to the first preset duration, control the first passage, the battery circuit (17), and the HVAC circuit (15) to communicate with each other; Set the output powers of the first water pump (6), the second water pump (8), the third water pump (7), and the fourth water pump (9) to a second preset power, and the second preset power is used to maintain the residual gas volume in the thermal management system below the first preset value.

2. The exhaust method of the vehicle thermal management system according to claim 1, characterized in that: The electric drive circuit further includes a second passage, and the following steps are further included: When the accumulated filling duration is greater than the first preset duration and less than a second preset duration, control the second passage, the battery circuit (17), and the HVAC circuit (15) to communicate with each other; Set the output powers of the first water pump (6), the second water pump (8), the third water pump (7), and the fourth water pump (9) to the second preset power to maintain the residual gas volume in the thermal management system below the first preset value.

3. The exhaust method of the vehicle thermal management system according to claim 1, characterized in that: The following steps are further included: When the accumulated filling duration is greater than the second preset duration and less than a third preset duration, control the first passage, the battery circuit (17), and the HVAC circuit (15) to communicate with each other; Set the output powers of the first water pump (6), the second water pump (8), the third water pump (7), and the fourth water pump (9) to the second preset power to maintain the residual gas volume in the thermal management system below the first preset value.

4. The exhaust method of the vehicle thermal management system according to claim 1, characterized in that: It further includes the following steps: When the cumulative filling duration is greater than the third preset duration and less than the fourth preset duration, control the first passage, the battery circuit (17), and the HVAC circuit (15) to communicate with each other; Turn off the first water pump (6), the second water pump (8), the third water pump (7), and the fourth water pump (9) to maintain the residual gas volume in the thermal management system below the first preset value.

5. The exhaust method of the vehicle thermal management system according to claim 1, characterized in that: It further includes the following steps: When the cumulative filling duration is greater than the fourth preset duration and less than the fifth preset duration, control the first passage, the battery circuit (17), and the HVAC circuit (15) to communicate with each other; Set the output powers of the first water pump (6), the second water pump (8), the third water pump (7), and the fourth water pump (9) to the second preset power to maintain the residual gas volume in the thermal management system below the first preset value.

6. The exhaust method of the vehicle thermal management system according to claim 1, characterized in that: It further includes the following steps: When the cumulative filling duration is greater than the fifth preset duration and less than the sixth preset duration, control the vehicle to cut off high-voltage power and obtain the power-off moment of the high-voltage power-off; Based on the power-off moment, accumulate the power-off duration. When the accumulated power-off duration is less than or equal to the first preset duration, control the vehicle to turn on high-voltage power. After the accumulated power-on duration is greater than the first preset duration, judge the liquid level signal in the water storage bottle (3). If the liquid level drops, respond to the liquid level drop signal and fill it to the standard line of the water storage bottle (3).

7. A terminal device, comprising a memory, a processor, and a computer program stored in the memory and executable on the processor, characterized in that: When the processor executes the computer program, it implements the steps of the exhaust method of the vehicle thermal management system according to any one of claims 1 to 6.

8. A computer-readable storage medium having a computer program, characterized in that, When the computer program is executed by the processor, it implements the steps of the exhaust method of the vehicle thermal management system according to any one of claims 1 to 6.

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