A method and system for controlling starting and generating power of a range extender in a plateau environment

Abstract

This application discloses a method and system for controlling range extender starting and power generation in plateau environments. The method includes: collecting engine coolant temperature and altitude values, setting the engine starting torque and drag time; after the drag time expires, determining the engine's autonomous idle start; if the idle is determined to be successful, entering engine warm-up mode; otherwise, starting and dragging are performed again; in the warm-up state, inputting the engine coolant temperature sample value, and outputting the engine operating speed value and generator output power value according to a preset temperature-speed-power three-dimensional table; after the warm-up ends, when entering the power generation phase, performing closed-loop power output and power generation control according to the power command issued by the vehicle. This application can achieve smooth engine starting and stable power generation in plateau environments.

Description

Technical Field

[0001] The present application relates to the technical field of range extender starting and power generation control in plateau environments, and in particular to a range extender starting and power generation control method and system in plateau environments. Background Art

[0002] With the widespread adoption of new energy vehicles and the widespread application of electric vehicles in specialized industries, the demand for charging equipment is also increasing. Traditional fixed charging stations suffer from shortcomings such as poor flexibility, location requirements, and the inability to charge anywhere, all of which limit the range of electric vehicles. Range-extended starting and generating systems, however, address these shortcomings. They offer advantages such as high flexibility, modularity, and freedom from time and space constraints. They also enable the engine to operate at high thermal efficiency. Consequently, they are becoming increasingly popular in new energy vehicles, particularly specialized vehicles.

[0003] To meet the demands of electric vehicles operating in plateau environments, existing technologies typically employ a variety of measures to ensure proper engine starting and efficient operation. For example, optimizing fuel supply strategies and improving the precision of electronic control systems can improve engine performance in low-temperature and low-oxygen conditions. Furthermore, some solutions employ preheating devices and high compression ratio designs to enhance the engine's cold-start capability in extreme environments.

[0004] However, existing solutions for engine starting and stable operation in plateau environments generally have the following flaws: First, in the harsh environment of high altitude or low oxygen, especially in the plateau where both are present, the range extender has difficulty starting the engine on its own due to the low oxygen and low temperature; second, even after successful startup, the engine takes a long time to reach optimal operating condition, which not only prolongs the warm-up time but also increases energy consumption; third, when the engine speed is unstable or the fuel combustion is incomplete, there is a lack of effective auxiliary mechanisms to maintain its normal operation. Therefore, how to achieve fast and reliable engine starting and stable power generation in plateau environments has become a key issue that needs to be solved urgently. Summary of the Invention

[0005] In order to achieve smooth engine starting and stable power generation in plateaus, the present application provides a method and system for controlling starting and power generation of a range extender in a plateau environment.

[0006] In a first aspect, the present application provides a method for controlling starting and generating electricity of a range extender in a plateau environment, comprising:

[0007] S1. Collect engine coolant temperature and altitude values, and set the engine starting torque and drag time;

[0008] S2. After the dragging time ends, the engine autonomous idling start is determined; if the idling is determined to be successful, the engine enters the warm-up mode; otherwise, the start dragging is performed again;

[0009] S3. In the hot engine state, input the engine coolant temperature sampling value, and output the engine operating speed value and generator output power value according to the preset temperature-speed-power three-dimensional table;

[0010] S4: After the thermal engine is finished and the power generation phase begins, the power closed-loop output is performed according to the power command issued by the vehicle to control the power generation.

[0011] By adopting the above scheme, during the starting phase, the coolant temperature and altitude are comprehensively considered to adaptively adjust the starting torque and dragging time, thereby improving the starting success rate under extreme conditions; after the dragging time is over, the engine speed value is continuously monitored to determine whether the vehicle has started successfully, and timely identification is made to avoid long-term invalid operation; during the warm-up process, the generator output power is adjusted accordingly according to the change in coolant temperature, the engine preheating speed is accelerated, and the time to reach the optimal working state is shortened; after the warm-up is completed, closed-loop control is performed according to the power command issued by the whole vehicle to ensure that the power generation process is stable and efficient; multiple stages of regulation can ensure that the engine starts smoothly under low temperature and low oxygen conditions in the plateau environment and quickly enters the warm-up state.

[0012] Preferably, the step S1 specifically includes:

[0013] Read the collected altitude value, and adaptively adjust the engine's front and rear injection intervals and injection amount according to the read altitude value;

[0014] Establishing a temperature-torque-drag time three-dimensional table based on historical engine operating data; the engine operating data includes: altitude value, coolant temperature, engine load, and engine starting torque and drag time during each engine start;

[0015] According to the currently collected coolant temperature sampling value, the corresponding engine drag torque and drag time are output.

[0016] By adopting the above solution, the engine's front and rear injection intervals and injection amount are automatically adjusted according to the conditions of the plateau environment, thereby optimizing starting performance; combined with the temperature-torque-drag time three-dimensional table, the appropriate engine drag torque and drag time are accurately output according to the current coolant temperature, thereby improving the starting success rate and reliability.

[0017] Preferably, the step S2 specifically includes:

[0018] After the dragging time ends, continuously monitoring the engine speed value within a first preset time period;

[0019] determining whether the engine speed value is continuously higher than a first preset value within a first preset time period; if so, idling is determined to be successful and the vehicle enters an autonomous starting state; otherwise, starting is determined to be unsuccessful; and if idling is determined to be successful, the vehicle enters an engine warm-up mode;

[0020] When it is determined that the vehicle has failed to start, the vehicle is started and dragged again according to the restart and dragging strategy; the restart and dragging strategy includes: starting and dragging for a preset number of times. If the vehicle fails to enter the autonomous starting state after the preset number of consecutive times, the start is determined to have failed and a prompt message is generated.

[0021] By adopting the above solution, the engine speed value within the first preset time period is continuously monitored and compared with the dynamic threshold value, so as to promptly detect whether the engine has reached a stable idle state, thereby more accurately ensuring the smooth start of the engine in a high-altitude, low-oxygen environment, and setting a preset number of dragging times to avoid invalid repeated starting attempts, saving energy and reducing wear.

[0022] Preferably, the method for establishing the preset temperature-speed-power three-dimensional table in step S3 includes:

[0023] According to the preset engine coolant temperature range, temperature sub-intervals are established at each interval of the preset sub-temperature range. Within each sub-interval, the required engine operating speed value and power generation power value are set to meet the requirement that as the set engine coolant temperature rises, the set power gradually increases, thereby obtaining a preset temperature-speed-power three-dimensional table.

[0024] By adopting the above scheme, in each sub-interval, a power generation value is set that gradually increases with the increase in coolant temperature, so that the engine can reach the ideal operating state more quickly during the warm-up process, reducing unnecessary preheating time and effectively shortening the engine warm-up time in a plateau environment.

[0025] Preferably, the step S4 of performing closed-loop power output according to the power instruction issued by the vehicle includes:

[0026] A two-dimensional power constraint matrix of battery SOC value and temperature value is established, and the power generation command requested by the vehicle is responded to under the constraint matrix; according to the power generation command requested by the vehicle and the current feedback power, a power feedforward closed loop is performed, and the calculation equation is:

[0027]

[0028] Where, P out is the current calculated output power, P ref Request power command for the vehicle, P fdb is the current feedback power, k p is the proportional gain, ki is the integral gain, k f is the feedforward gain.

[0029] By adopting the above scheme, a constraint matrix is ​​constructed and power control is performed according to the SOC value and temperature value, and then power feedforward closed-loop control is performed on the power instructions issued by the whole vehicle, which can effectively reduce the fluctuation of power generation and improve the stability and reliability of the system.

[0030] Preferably, step S4 further includes:

[0031] The system performs closed-loop power output according to the power command issued by the vehicle. During the power generation control process, it monitors the engine speed to determine whether the speed drops. If so, the generator is immediately switched to electric mode to provide auxiliary torque to the engine and maintain the current power generation speed until the engine can operate autonomously again.

[0032] By adopting the above solution, during the power generation control process, the engine speed changes are monitored in real time. When the engine speed drops, the generator quickly switches to electric mode to provide the necessary auxiliary torque for the engine to maintain the current power generation speed, thereby preventing abnormal power generation or engine shutdown due to unstable engine speed.

[0033] Preferably, step S4 further includes:

[0034] After receiving the power request command issued by the whole vehicle, the engine controller is used to output the generator torque command and engine speed control command according to the constraint matrix and power closed loop according to the power request command issued by the whole vehicle, and the engine speed control command is sent to the engine ECU through the CAN bus, while the generator controller itself executes the torque output command.

[0035] By adopting the above solution, the range extender control function is integrated, and the engine controller is used to output the generator torque command and engine speed control command according to the constraint matrix and power closed loop of the power request command issued by the whole vehicle, thereby enhancing the reliability and stability of the system and avoiding performance degradation caused by communication delays or failures.

[0036] In a second aspect, the present application provides a range extender starting and power generation control system in a plateau environment, comprising:

[0037] The engine drag module is used to collect engine coolant temperature and altitude values, and set the engine starting torque and drag time;

[0038] The engine idle speed judgment module is used to judge whether the engine can start idling automatically after the dragging time ends. If the idle speed is judged to be successful, the engine enters the engine warm-up mode, otherwise the engine starts dragging again.

[0039] The engine heat process module is used to input the engine coolant temperature sampling value in the heat state, and output the engine operating speed value and generator output power value according to the preset temperature-speed-power three-dimensional table;

[0040] The generator working module is used to perform power closed-loop output and power generation control according to the power command issued by the whole vehicle when entering the power generation link after the thermal engine ends.

[0041] By adopting the above solution, the engine can be started smoothly and quickly enter the hot engine state under low temperature and low oxygen conditions in a plateau environment.

[0042] In a third aspect, the present application provides a computer-readable storage medium, which includes a stored computer program, wherein when the computer program is running, the device where the computer-readable storage medium is located is controlled to execute the method as described above.

[0043] In a fourth aspect, the present application provides a computer device, which includes a memory, a processor, and a program stored and executable on the memory, and the program implements the steps of the above method when executed by the processor.

[0044] In summary, this application has the following beneficial effects:

[0045] 1. By collecting engine coolant temperature and altitude values, the system adaptively adjusts the intervals between front and rear injections and the injection amount, and outputs the appropriate starting torque and drag time based on a preset temperature-torque-drag time three-dimensional table, enabling smooth engine starts in harsh environments. Successful engine starts are determined by continuously monitoring engine speed, allowing prompt identification and notification to prevent prolonged ineffective operation. During warm-up, the system gradually increases power generation using a temperature-speed-power three-dimensional table. As the engine coolant temperature rises, the set power gradually increases, shortening the warm-up time and enabling the engine to quickly enter a highly efficient power generation state. After warm-up, closed-loop control is implemented based on the power command issued by the vehicle, ensuring stable and efficient power generation.

[0046] 2. During the entire power generation process, the engine speed is continuously monitored. If the speed drops, the generator will immediately switch to electric mode to provide auxiliary torque to the engine to maintain the current power generation speed until the engine resumes normal operation, effectively avoiding the risk of engine stalling;

[0047] 3. The engine controller integrates the range extender control function. It is not only responsible for receiving the power request command issued by the whole vehicle, but also can calculate the corresponding generator torque command and engine speed control command based on the constraint matrix and power closed loop. It communicates with the engine ECU through the CAN bus to achieve coordinated control. BRIEF DESCRIPTION OF THE DRAWINGS

[0048] Figure 1 is a flow chart of the method described in a specific embodiment;

[0049] Figure 2 is a flow chart of a heat engine process control method in the method described in a specific embodiment;

[0050] Figure 3 A flowchart of a generator working process under a constraint matrix in a power generation control process of the method described in a specific embodiment;

[0051] Figure 4 This is a workflow diagram of the generator switching from braking to electric state during the power generation control process of the method described in the specific embodiment;

[0052] Figure 5 Schematic diagram of a framework for realizing coordinated control of a generator and an engine by using a generator controller with an integrated booster control unit in the method described in a specific embodiment;

[0053] Figure 6 Schematic diagram of the structure of the system in a specific embodiment. DETAILED DESCRIPTION

[0054] In order to make the purpose, technical solutions and advantages of this application more clear, the following further describes this application in detail with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are only used to explain this application and are not intended to limit this application.

[0055] Traditional fixed charging stations have shortcomings such as poor flexibility, location requirements, and the inability to charge anytime, anywhere, which limit the range of electric vehicles. The range-extended starting and generator system can compensate for these shortcomings. However, range extenders face significant challenges in starting and operating the engine under load in harsh environments such as high altitude or low oxygen levels, especially those found on the plateau. Generators, on the other hand, are unaffected by these conditions.

[0056] In order to improve the above situation, it is considered to make full use of the assistance of the generator to ensure that the engine starts smoothly and generates electricity stably in the plateau. Figure 1 As shown, the embodiment of the present application discloses a method for controlling the start-up and power generation of a range extender in a plateau environment, and the specific steps include:

[0057] S1. Start the engine, collect the engine coolant temperature and altitude values, and set the engine starting torque and drag time.

[0058] Specifically, after the engine is started, the sensor is used to collect the engine coolant temperature and the altitude value of the current environment in real time.

[0059] The system reads the collected altitude value and adaptively adjusts the engine's pre- and post-injection intervals and injection amounts based on the altitude reading. This adaptive adjustment is accomplished using a neural network algorithm. The neural network model is trained using historical engine starting performance indicators at various altitudes, where the pre- and post-injection intervals and injection amounts are greater than a preset starting performance indicator. The model's input is the altitude value, and its output is the pre- and post-injection intervals and injection amounts, completing the adaptive adjustment based on the altitude reading. Furthermore, to further optimize starting performance, a humidity sensor collects air humidity, and the pre- and post-injection intervals and injection amounts are adaptively adjusted based on the altitude, coolant temperature, and air humidity.

[0060] A three-dimensional temperature-torque-drag time table is created based on historically recorded engine operating data. This data includes altitude, coolant temperature, engine load, and the engine's starting torque and drag time during each engine start. To ensure the accuracy of this table, it can be modified and improved based on multiple test records to ensure accurate output of appropriate starting torque and drag time under various conditions. The table's data update frequency can be manually set to ensure real-time performance. For example, it can be updated automatically every hour or manually after each start.

[0061] According to the currently collected coolant temperature sampling value, the corresponding engine drag torque and drag time are outputted, so that the engine starting and dragging are completed according to the output drag torque and drag time.

[0062] S2. After the dragging time ends, determine whether the engine is idling autonomously.

[0063] Specifically, after the dragging time ends, the engine speed value is continuously monitored within a first preset time period; in this embodiment, the first preset time period is set to 5S.

[0064] Determine whether the engine speed value is continuously higher than a first preset value within a first preset time period. If so, it is determined that the idling is successful and the vehicle enters the autonomous starting state; otherwise, it is determined that the starting fails. The first preset value is a dynamic preset value that is dynamically adjusted and set according to the real-time acquired altitude value using a machine learning algorithm. The preset value acquisition model can be trained by using the first preset value corresponding to the engine being in the autonomous idling starting state under historical conditions of different altitude values. The model input is the altitude value, and the output is the first preset value corresponding to the altitude value.

[0065] When the idling is determined to be successful, the engine warm-up mode is entered and the process goes to step S3.

[0066] If the vehicle is deemed to have failed to start, the vehicle is restarted according to a restart and towing strategy, i.e., the process proceeds to S1. The restart and towing strategy includes: performing a preset number of restart and towing attempts. If the vehicle fails to start autonomously after the preset number of attempts, the vehicle is determined to have failed to start and a prompt message is generated. In this embodiment, the preset number of attempts is three.

[0067] S3. In the hot engine state, input the engine coolant temperature sampling value, and output the engine operating speed value and generator output power value according to the preset temperature-speed-power three-dimensional table.

[0068] Specifically, such as Figure 2 As shown, the engine coolant temperature sampling value is input, and the engine operating speed value and the generator output power value are output according to the preset temperature-speed-power three-dimensional table. Then, the engine speed and generator torque can be determined according to the pre-constructed power-speed-torque three-dimensional table.

[0069] The establishment of the preset temperature-speed-power three-dimensional table includes: establishing temperature sub-intervals with each preset sub-temperature range (10°C) interval according to a preset engine coolant temperature range (e.g., from -50°C to +70°C); setting the required engine operating speed value and generated power value within each sub-interval, so that the set power gradually increases as the set engine coolant temperature rises;

[0070] Among them, the required engine operating speed value and power generation power value settings can be further pre-set based on the initial range of operating speed values ​​and power generation power values ​​recorded by the hot engine under different historical engine coolant temperature conditions, and then as the set engine coolant temperature rises, the corresponding set power gradually increases, thereby finally obtaining a preset temperature-speed-power three-dimensional table.

[0071] S4: After the thermal engine is finished and the power generation phase begins, the power closed-loop output is performed according to the power command issued by the vehicle to control the power generation.

[0072] like Figure 3 As shown, a two-dimensional power constraint matrix of battery SOC value and temperature value is established, and the power generation command requested by the vehicle is responded to under the constraint matrix.

[0073] Specifically, the performance data of the battery at different SOC values ​​and temperatures, including maximum discharge power, maximum charging power, etc., is collected, and a two-dimensional matrix is ​​established with the SOC value and temperature as the coordinate axes; at each (SOC, temperature) point, the corresponding power constraint value is set according to the collected data, including the maximum discharge power and the maximum charging power; this matrix will serve as the basis for subsequent responses to vehicle power requests. When a power generation request is received from the vehicle, the power value and target SOC value in the request are first parsed. Based on the current battery SOC value and temperature value, the corresponding power constraint is searched in the two-dimensional power constraint matrix. Determine whether the power requested by the vehicle is within the constraint range. If so, proceed to the next step; if not, the requested power needs to be adjusted to be within the constraint range.

[0074] After responding to the power generation command requested by the vehicle, a power feedforward closed loop is performed based on the power generation command requested by the vehicle and the current feedback power. The calculation equation is:

[0075]

[0076] Where, P out is the current calculated output power, P ref Request power command for the vehicle, P fdb is the current feedback power, k p is the proportional gain, k i is the integral gain, k f is the feedforward gain.

[0077] Power generation control is performed based on the closed-loop power feed-forward closed-loop output.

[0078] In a specific embodiment, considering that when there is a large step in the power generation load, or the engine itself drops in speed due to environmental changes, or the engine mechanical torque output is small due to insufficient fuel combustion, resulting in abnormal power output, the generator will stop generating electricity, and it is necessary to provide auxiliary torque to the engine so that the engine can operate autonomously again, step S4 of the method further includes:

[0079] like Figure 4 As shown, the power closed-loop output is performed according to the power command issued by the whole vehicle. During the power generation control process, the generator works in a braking state, monitors the engine speed, and determines whether the speed drops. If the speed drops, the generator is immediately switched to electric mode to achieve electric power assistance, provide auxiliary torque to the engine, and periodically drag the engine to maintain the current power generation speed until the engine can operate independently again.

[0080] In a specific embodiment, in order to further enhance the reliability and stability of the system and avoid performance degradation due to communication delays or failures, step S4 of the method further includes:

[0081] like Figure 5 As shown, after receiving the power request instruction issued by the whole vehicle, the engine controller is used to output the generator torque instruction and engine speed control instruction according to the constraint matrix and power closed loop of the power request instruction issued by the whole vehicle, and the engine speed control instruction is sent to the engine ECU through the CAN bus, while the generator controller itself executes the torque output instruction.

[0082] like Figure 6 As shown, the embodiment of the present application also discloses a range extender starting power generation control system in a plateau environment, specifically including:

[0083] The engine drag module 101 is used to collect the engine coolant temperature and altitude values ​​and set the engine starting torque and drag time;

[0084] The engine idle speed determination module 102 is used to determine whether the engine is idling automatically after the dragging time ends; if the idle speed is determined to be successful, the engine enters the engine warm-up mode; otherwise, the engine starts dragging again;

[0085] The engine heat-up process module 103 is used to input the engine coolant temperature sampling value in the heat-up state and output the engine operating speed value and the generator output power value according to the preset temperature-speed-power three-dimensional table;

[0086] The generator working module 104 is used to perform power closed-loop output and power generation control according to the power command issued by the vehicle when entering the power generation phase after the thermal engine ends.

[0087] The embodiment of the present application also discloses a computer-readable storage medium.

[0088] Specifically, the computer-readable storage medium stores a computer program that can be loaded by a processor and execute the above-mentioned method for controlling the starting and generating electricity of a range extender in a plateau environment. The computer-readable storage medium includes, for example, various media that can store program codes, such as a USB flash drive, a mobile hard disk, a read-only memory (ROM), a random access memory (RAM), a magnetic disk or an optical disk.

[0089] The embodiment of the present application also discloses a computer device.

[0090] Specifically, the computer device includes a memory and a processor, and the memory stores a computer program that can be loaded by the processor and execute the above-mentioned method for controlling the starting and power generation of a range extender in a plateau environment.

[0091] The above are all preferred embodiments of the present application and are not intended to limit the scope of protection of this application. Unless otherwise stated, any feature disclosed in this specification (including the abstract and drawings) may be replaced by other equivalent or similar features. In other words, unless otherwise stated, each feature is merely an example of a series of equivalent or similar features.

Claims

1. A method for controlling the start-up and power generation of a range extender in a plateau environment, characterized in that: include: S1. Collect engine coolant temperature and altitude values, and set the engine starting torque and drag time; S2. After the dragging time ends, the engine autonomous idling start is determined; if the idling is determined to be successful, the engine enters the warm-up mode; otherwise, the start dragging is performed again; S3. In the hot engine state, input the engine coolant temperature sampling value, and output the engine operating speed value and generator output power value according to the preset temperature-speed-power three-dimensional table; S4, when entering the power generation phase after the heat engine is finished, power closed-loop output is performed according to the power command issued by the vehicle to control power generation; the step S1 specifically includes: Read the collected altitude value, and adaptively adjust the engine's front and rear injection intervals and injection amount according to the read altitude value; Establishing a temperature-torque-drag time three-dimensional table based on historical engine operating data; the engine operating data includes: altitude value, coolant temperature, engine load, and engine starting torque and drag time during each engine start; According to the currently collected coolant temperature sampling value, the corresponding engine drag torque and drag time are output.

2. The method for controlling starting and generating electricity of a range extender in a plateau environment according to claim 1, characterized in that: The step S2 specifically includes: After the dragging time ends, continuously monitoring the engine speed value within a first preset time period; Determining whether the engine speed value is continuously higher than a first preset value within a first preset time period, if so, determining that idling is successful and entering an autonomous starting state, otherwise determining that starting has failed; When idling is confirmed to be successful, the engine enters the warm-up mode; When it is determined that the vehicle has failed to start, the vehicle is started and dragged again according to the restart and dragging strategy; the restart and dragging strategy includes: starting and dragging for a preset number of times. If the vehicle fails to enter the autonomous starting state after the preset number of consecutive times, the start is determined to have failed and a prompt message is generated.

3. The method for controlling starting and generating electricity of a range extender in a plateau environment according to claim 1, characterized in that: The method for establishing the preset temperature-speed-power three-dimensional table in step S3 includes: According to the preset engine coolant temperature range, temperature sub-intervals are established at each interval of the preset sub-temperature range. Within each sub-interval, the required engine operating speed value and power generation power value are set to meet the requirement that as the set engine coolant temperature rises, the set power gradually increases, thereby obtaining a preset temperature-speed-power three-dimensional table.

4. The method for controlling starting and generating electricity of a range extender in a plateau environment according to claim 1, characterized in that: The closed-loop power output according to the power command issued by the vehicle in step S4 includes: Establish a two-dimensional power constraint matrix of battery SOC value and temperature value, and respond to the power generation command requested by the vehicle under the constraint matrix; According to the power generation command requested by the vehicle and the current feedback power, a power feedforward closed loop is performed, and the calculation equation is: Where, P out is the current calculated output power, P ref Request power command for the vehicle, P fdb is the current feedback power, k p is the proportional gain, k i is the integral gain, k f is the feedforward gain.

5. The method for controlling starting and generating power of a range extender in a plateau environment according to claim 1, characterized in that: Step S4 further includes: The system performs closed-loop power output according to the power command issued by the vehicle. During the power generation control process, it monitors the engine speed to determine whether the speed drops. If so, the generator is immediately switched to electric mode to provide auxiliary torque to the engine and maintain the current power generation speed until the engine can operate autonomously again.

6. The method for controlling starting and generating electricity of a range extender in a plateau environment according to claim 4, characterized in that: Step S4 further includes: After receiving the power request command issued by the whole vehicle, the engine controller is used to output the generator torque command and engine speed control command according to the constraint matrix and power closed loop according to the power request command issued by the whole vehicle, and the engine speed control command is sent to the engine ECU through the CAN bus, while the generator controller itself executes the torque output command.

7. A range extender starting power generation control system in a plateau environment, characterized in that: include: The engine drag module is used to collect engine coolant temperature and altitude values, and set the engine starting torque and drag time; Read the collected altitude value, and adaptively adjust the engine's front and rear injection intervals and injection volume based on the read altitude value; establish a temperature-torque-drag time three-dimensional table based on historical engine operation data; The engine operation data includes: the altitude value, coolant temperature, engine load, and engine starting torque and drag time during each engine start process; based on the currently collected coolant temperature sample value, the corresponding engine drag torque and drag time are output; The engine idle speed judgment module is used to judge whether the engine can start idling automatically after the dragging time ends. If the idle speed is judged to be successful, the engine enters the engine warm-up mode, otherwise the engine starts dragging again. The engine heat process module is used to input the engine coolant temperature sampling value in the heat state, and output the engine operating speed value and generator output power value according to the preset temperature-speed-power three-dimensional table; The generator working module is used to perform power closed-loop output and power generation control according to the power command issued by the whole vehicle when entering the power generation link after the thermal engine ends.

8. A computer-readable storage medium, characterized in that The computer-readable storage medium includes a stored computer program, wherein when the computer program is executed, the device where the computer-readable storage medium is located is controlled to execute the method according to any one of claims 1 to 6.

9. A computer device, characterized in that: The computer device includes a memory, a processor, and a program stored and executable on the memory, and when the program is executed by the processor, the steps of the method according to any one of claims 1 to 6 are implemented.

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