Range extender control method and device, equipment, storage medium and program product

Abstract

The invention relates to a range extender control method and device, equipment, a storage medium and a program product, and relates to the technical field of new energy automobiles. The method is executed by a hybrid power control system of the extended-range automobile and comprises the steps that the charge state and the required power of the extended-range automobile are obtained; when the required power is smaller than the battery discharge power of the range extending type automobile and the charge state of the range extending type automobile meets the first charge state, a range extender is started; stopping the range extender when the required power is smaller than the battery discharge power of the range extending type automobile and the charge state of the range extending type automobile meets the second charge state; the second charge state is greater than the first charge state; under the condition that the required power is larger than the battery discharge power of the extended-range automobile, a starting threshold value is obtained; starting a range extender under the condition that the required power is greater than a starting threshold value; and under the condition that the required power is smaller than the starting threshold value, the range extender is stopped.

Description

Technical Field

[0001] The embodiments of the present application relate to the field of new energy vehicle technology, and in particular to a range extender control method, device, equipment, storage medium and program product. Background Art

[0002] With the rapid development of the new energy vehicle industry, extended-range electric vehicles have received widespread attention from users. The range extender in an extended-range electric vehicle can enable the electric vehicle to start when the high-voltage battery is not under-charged or the available power cannot meet the required power, to charge the battery or power the entire vehicle. Therefore, the control method for the range extender is particularly important.

[0003] In the related art, during the driving of an extended-range vehicle, the vehicle's engine management system can monitor the state of charge of the vehicle's battery and the vehicle's required power in real time. When it is detected that the state of charge is lower than a preset minimum state of charge, or the current available power is insufficient to meet the vehicle's required power, the vehicle's engine management system enables the range extender, generates electricity through the range extender and charges the battery or directly supplies power to the electric motor; conversely, if the state of charge of the vehicle's battery returns to a higher state of charge threshold and the vehicle's required power returns to normal, the vehicle's engine management system shuts down the range extender.

[0004] However, in the solutions shown in the above-mentioned related technologies, the factors considered in the control method of the range extender of the extended-range electric vehicle are relatively single, resulting in low control accuracy of the range extender, which affects the control effect of the range extender. Summary of the invention

[0005] The embodiments of the present application provide a range extender control method, device, equipment, storage medium and program product, which can improve the accuracy of the hybrid control system of the range extender of the range extender and improve the control effect of the range extender. The technical solution is as follows:

[0006] In one aspect, a range extender control method is provided, the method being executed by a hybrid power control system of a range-extended vehicle, the method comprising:

[0007] Acquiring the state of charge and required power of the extended-range vehicle; the required power is the driving power of the extended-range vehicle plus the accessory power of the extended-range vehicle;

[0008] When the required power is less than the battery discharge power of the extended-range vehicle and the state of charge of the extended-range vehicle satisfies a first state of charge, starting the range extender;

[0009] When the required power is less than the battery discharge power of the extended-range vehicle and the state of charge of the extended-range vehicle satisfies a second state of charge, stopping the range extender; the second state of charge is greater than the first state of charge;

[0010] When the required power is greater than the battery discharge power of the extended-range vehicle, obtaining a startup threshold;

[0011] When the required power is greater than the start threshold, starting the range extender;

[0012] When the required power is less than the start threshold, the range extender is stopped.

[0013] In another aspect, a range extender control device is provided, the device comprising:

[0014] An information acquisition module, used to acquire the state of charge and required power of the extended-range vehicle; the required power is the driving power of the extended-range vehicle plus the accessory power of the extended-range vehicle;

[0015] A first starting module, configured to start the range extender when the required power is less than the battery discharge power of the extended-range vehicle and the state of charge of the extended-range vehicle satisfies a first state of charge;

[0016] A first stopping module, configured to stop the range extender when the required power is less than the battery discharge power of the range-extended vehicle and the state of charge of the range-extended vehicle satisfies a second state of charge; the second state of charge is greater than the first state of charge;

[0017] A startup threshold acquisition module, used for acquiring a startup threshold when the required power is greater than the battery discharge power of the extended-range vehicle;

[0018] A second starting module, configured to start the range extender when the required power is greater than the starting threshold;

[0019] The second stopping module is used to stop the range extender when the required power is less than the start threshold.

[0020] In some embodiments, the start threshold acquisition module is used to obtain the vehicle speed of the extended-range vehicle; through the charge state of the extended-range vehicle and the vehicle speed, the correspondence between the charge state of the extended-range vehicle, the vehicle speed and the start threshold is queried to obtain the start threshold corresponding to the charge state of the extended-range vehicle and the vehicle speed.

[0021] In some embodiments, when the vehicle speed is less than a specified threshold, the device further comprises:

[0022] a third starting module, configured to start the range extender when the state of charge of the range-extended vehicle is less than the first state of charge;

[0023] The third stopping module is used to stop the range extender when the charge state of the extended-range vehicle rises to the second charge state.

[0024] In some embodiments, the apparatus further comprises:

[0025] A first information acquisition module is used to acquire the accelerator pedal opening of the extended-range vehicle, the ambient temperature of the extended-range vehicle, the altitude of the extended-range vehicle, and the atmospheric pressure;

[0026] A second information acquisition module is used to respectively acquire the basic power generation, the ambient temperature correction coefficient and the air pressure correction coefficient corresponding to the range extender based on the accelerator pedal opening of the range-extended vehicle, the ambient temperature of the range-extended vehicle, the altitude of the range-extended vehicle and the atmospheric pressure;

[0027] a target power generation acquisition module, used to acquire the product of the basic power generation, the ambient temperature correction coefficient and the air pressure correction coefficient as the target power generation of the range extender;

[0028] A target speed acquisition module, used to query the corresponding relationship between the target power generation and the motor speed through the target power generation, and acquire the target speed corresponding to the target power generation;

[0029] The first operating module is used to control the range extender to operate at the target speed.

[0030] In some embodiments, the second information acquisition module is used to query the correspondence between the accelerator pedal opening of the extended-range vehicle, the vehicle speed and the basic power generation power through the accelerator pedal opening of the extended-range vehicle and the vehicle speed, and obtain the basic power generation power of the range extender; query the correspondence between the ambient temperature of the extended-range vehicle, the state of charge of the extended-range vehicle and the ambient temperature correction coefficient through the ambient temperature of the extended-range vehicle and the state of charge of the extended-range vehicle, and obtain the ambient temperature correction coefficient of the range extender; query the correspondence between the altitude of the extended-range vehicle, the atmospheric pressure and the air pressure correction coefficient through the altitude of the extended-range vehicle and the atmospheric pressure, and obtain the air pressure correction coefficient of the range extender.

[0031] In some embodiments, the apparatus further comprises:

[0032] a target control torque acquisition module, configured to query the corresponding relationship between the target speed and the control torque of the generator through the target speed within a specified time period before the range extender is completely stopped, and acquire the target control torque corresponding to the target speed;

[0033] The second operation module is used to control the range extender to operate at the target control torque.

[0034] On the other hand, a computer device is provided, comprising a processor and a memory, wherein the memory stores at least one instruction, at least one program, a code set or an instruction set, and the at least one instruction, the at least one program, the code set or the instruction set is loaded and executed by the processor to implement the range extender control method as described above.

[0035] On the other hand, a computer-readable storage medium is provided, wherein at least one instruction, at least one program, a code set or an instruction set is stored in the storage medium, and the at least one instruction, the at least one program, the code set or the instruction set is loaded and executed by a processor to implement the range extender control method as described above.

[0036] In another aspect, a computer program product is provided, the computer program product comprising a computer program, the computer program being stored in a computer-readable storage medium. A processor of a computer device reads the computer program from the computer-readable storage medium, and the processor executes the computer program, so that the computer device executes the range extender control method provided in the above-mentioned various optional implementations.

[0037] The technical solution provided by this application may have the following beneficial effects:

[0038] The hybrid power control system of the extended-range vehicle can obtain the charge state and required power of the extended-range vehicle in real time. The first charge state sets the minimum power limit for starting the range extender. The second charge state is used as the shutdown threshold to prevent overcharging and protect the health of the battery. Based on the first charge state and the second charge state, it is ensured that the range extender can be started in time to replenish power when the battery of the whole vehicle is insufficient, while avoiding overcharging. Furthermore, when the required power of the whole vehicle exceeds the battery discharge capacity, a start threshold is introduced, so that the hybrid power control system of the extended-range vehicle can more accurately judge whether it is necessary to start / stop the range extender based on the current vehicle operating conditions. The above scheme achieves more accurate and stable control of the range extender by accurately setting the start / stop conditions of the range extender and flexibly adjusting it according to the actual needs of the whole vehicle, effectively improving the accuracy of the hybrid power control system of the extended-range vehicle to control the range extender and improving the control effect of the range extender.

[0039] It should be understood that the foregoing general description and the following detailed description are exemplary and explanatory only and are not restrictive of the present application. BRIEF DESCRIPTION OF THE DRAWINGS

[0040] The accompanying drawings, which are incorporated in and constitute a part of this specification, illustrate embodiments consistent with the present application and, together with the description, serve to explain the principles of the present application.

[0041] Figure 1 is a system configuration diagram of a range extender control method according to an embodiment of the present application;

[0042] Figure 2 is a flow chart of a range extender control method provided by an embodiment of the present application;

[0043] Figure 3 is a flow chart of a range extender control method provided by an embodiment of the present application;

[0044] Figure 4 It is a flowchart of a start-stop strategy optimization and calibration provided by an embodiment of the present application;

[0045] Figure 5 is a schematic diagram of a start-stop strategy provided by an embodiment of the present application;

[0046] Figure 6 is a block diagram of a range extender control device provided by an exemplary embodiment of the present application;

[0047] Figure 7 It is a structural diagram of a computer device provided by an exemplary embodiment of the present application. DETAILED DESCRIPTION

[0048] Here, exemplary embodiments are described in detail, and examples thereof are shown in the accompanying drawings. When the following description refers to the drawings, unless otherwise indicated, the same numbers in different drawings represent the same or similar elements. The implementations described in the following exemplary embodiments do not represent all implementations consistent with the present application.

[0049] Rather, they are merely examples of apparatus and methods consistent with some aspects of the present application as recited in the appended claims.

[0050] The present application proposes a range extender control scheme, which can achieve more precise and smooth control of the range extender, effectively improve the accuracy of the hybrid control system of the extended-range vehicle in controlling the range extender, and improve the control effect of the range extender. For ease of understanding, some concepts involved in the present application are explained below.

[0051] 1) Extended-range vehicles are hybrid vehicles that combine pure electric vehicles and traditional internal combustion engine vehicle technologies. Extended-range vehicles mainly rely on electric motors to drive the vehicle, and are equipped with a small internal combustion engine (usually a gasoline or diesel engine). This internal combustion engine does not directly drive the wheels, but as part of the generator, it starts when the on-board battery is low on power to generate electricity to extend the vehicle's mileage.

[0052] 2) The range extender is an auxiliary power device in the extended-range vehicle, mainly composed of a small internal combustion engine and a generator. It is started when the on-board battery of the extended-range vehicle is low on power, and generates electricity by burning fuel to extend the driving range of the extended-range vehicle.

[0053] 3) The hybrid power control system in the extended-range vehicle is an electronic control unit specially designed to manage and optimize the energy flow between the range extender (a combination of an internal combustion engine and a generator) and the electric drive system. The hybrid power control system is responsible for monitoring parameters such as battery charge, vehicle speed, and driving demand, and decides to start / stop the range extender to charge the battery accordingly, ensuring that the optimal performance and efficiency of the electric motor can be maintained under any driving conditions.

[0054] 4) NVH (Noise, Vibration, and Harshness) performance refers to the level of control of noise, vibration and harshness of the vehicle during operation. Good NVH performance ensures the quietness and stability of the vehicle interior, reduces uncomfortable noise and vibration, and provides a more pleasant driving and riding environment.

[0055] 5) SOC (State of Charge) indicates the ratio between the current remaining power of the battery and its total capacity, usually expressed as a percentage (0% to 100%). SOC is a key indicator for measuring the energy level of the battery. It is used to determine whether the battery needs to be charged, evaluate its endurance, and plays an important role in optimizing energy management and ensuring stable system operation in electric vehicles and portable electronic devices.

[0056] 6) HCU (Hybrid Control Unit) is the core electronic control system in hybrid vehicles or plug-in hybrid vehicles, responsible for coordinating and optimizing the energy distribution and working mode between the internal combustion engine and the electric motor. Through complex algorithms and real-time data processing, HCU accurately controls the interaction between the engine, electric motor and battery system to achieve optimal fuel efficiency, emission levels and driving performance.

[0057] Figure 1 1 is a system configuration diagram of a range extender control method according to an embodiment of the present application. Figure 1As shown, the system includes an extended-range vehicle 100 , and the extended-range vehicle 100 includes a hybrid power control system 101 .

[0058] The hybrid control system 101 can obtain the charge state and required power of the extended-range vehicle 100; the required power is the driving power of the extended-range vehicle 100 plus the accessory power of the extended-range vehicle 100; when the required power is less than the battery discharge power of the extended-range vehicle 100 and the charge state of the extended-range vehicle 100 satisfies the first charge state, the hybrid control system 101 starts the range extender 100b; when the required power is less than the battery discharge power of the extended-range vehicle 100 and the charge state of the extended-range vehicle 100 satisfies the second charge state, the hybrid control system 101 stops the range extender 100b; the second charge state is greater than the first charge state; when the required power is greater than the battery discharge power of the extended-range vehicle 100, the start threshold is obtained; when the required power is greater than the start threshold, the range extender 100b is started; when the required power is less than the start threshold, the range extender 100b is stopped.

[0059] Figure 2 : is a flow chart of a range extender control method provided by an embodiment of the present application. The range extender control method can be executed by a hybrid power control system of a range extender vehicle. For example, the range extender vehicle can be the above-mentioned Figure 1 For the extended-range vehicle 100 shown in FIG. 1 , the hybrid power control system may also be Figure 1 The above range extender control method may include steps 210, 220, 230, 240, 250 and 260, which are specifically implemented as follows:

[0060] Step 210: Obtain the state of charge and required power of the extended-range vehicle; the required power is the driving power of the extended-range vehicle plus the accessory power of the extended-range vehicle.

[0061] Among them, the state of charge of the above-mentioned extended-range vehicle is the ratio of the remaining power of the current extended-range vehicle's power battery to the total capacity of the power battery. The higher the state of charge, the more sufficient the power battery of the current extended-range vehicle is, and the lower the state of charge, the less power the power battery of the current extended-range vehicle is.

[0062] In the embodiment of the present application, the hybrid power control system can obtain the charge state of the extended-range vehicle through real-time monitoring.

[0063] The driving power of the above-mentioned extended-range vehicle is the power required by the electric motor of the extended-range vehicle when driving the vehicle.

[0064] The accessory power of the above-mentioned extended-range vehicle refers to the power required by auxiliary equipment other than the electric motor on the extended-range vehicle (for example, car air conditioning, car audio and car navigation).

[0065] In the embodiment of the present application, the hybrid power control system can calculate the current required power of the extended-range vehicle by monitoring the vehicle's driving state, vehicle speed, and the road conditions on which the vehicle is currently traveling in real time.

[0066] Step 220: When the required power is less than the battery discharge power of the extended-range vehicle and the state of charge of the extended-range vehicle satisfies the first state of charge, starting the range extender.

[0067] In an embodiment of the present application, the hybrid power control system can monitor and obtain the battery discharge power of the extended-range vehicle in real time.

[0068] The first state of charge is a preset state of charge threshold, which is a parameter used by the hybrid control system to determine whether the current charge level of the power battery is sufficient to maintain the operation of the extended-range vehicle.

[0069] In an embodiment of the present application, when the demand power of the extended-range vehicle is less than the battery discharge power of the extended-range vehicle, it means that the discharge capacity of the current power battery of the extended-range vehicle can meet the vehicle driving demand and the vehicle load demand. The hybrid power control system compares the charge state of the extended-range vehicle with the first charge state. When the charge state of the extended-range vehicle is less than the first charge state, the range extender is started. That is, when the charge state of the extended-range vehicle cannot maintain the operation of the extended-range vehicle, the hybrid power control system starts the range extender to generate electricity to maintain the normal driving of the extended-range vehicle.

[0070] Step 230: When the required power is less than the battery discharge power of the extended-range vehicle and the state of charge of the extended-range vehicle satisfies a second state of charge, stopping the range extender; the second state of charge is greater than the first state of charge.

[0071] Among them, the above-mentioned second state of charge is a preset charge state threshold value higher than the first state of charge, and is a parameter used by the hybrid control system to ensure that the battery will not be over-discharged, thereby avoiding unnecessary starting of the internal combustion engine when the extended-range vehicle has sufficient power.

[0072] In an embodiment of the present application, when the demand power of the extended-range vehicle is less than the battery discharge power of the extended-range vehicle, it means that the discharge capacity of the current power battery of the extended-range vehicle can meet the vehicle driving demand and the vehicle load demand. The hybrid control system compares the charge state of the extended-range vehicle with the first charge state. When the charge state of the extended-range vehicle is less than the first charge state, the range extender is started. That is, when the charge state of the extended-range vehicle cannot maintain the operation of the extended-range vehicle for a long time, the hybrid control system starts the range extender to generate electricity to maintain the normal driving of the extended-range vehicle.

[0073] Step 240: When the required power is greater than the battery discharge power of the extended-range vehicle, obtain a startup threshold.

[0074] The startup threshold is a preset power value for the required power of the range-extended vehicle, and is used to determine whether the range extender needs to be started.

[0075] In some embodiments, when the required power of the extended-range vehicle exceeds the battery discharge power, the hybrid control system may obtain a preset start threshold from an internal database.

[0076] In other embodiments, when the demand power of the extended-range vehicle exceeds the battery discharge power, the hybrid control system can dynamically calculate and obtain the start-up threshold based on the current parameter information of the extended-range vehicle (e.g., state of charge, battery health status) through a preset algorithm or model. The algorithm or model is an algorithm or model that has the ability to generate a start-up threshold based on the state of charge and battery health status.

[0077] Step 250: When the required power is greater than the start threshold, start the range extender.

[0078] In an embodiment of the present application, when the demand power of the entire vehicle is greater than the start-up threshold, it means that the current demand power of the extended-range vehicle is high and the energy generated by the power battery cannot meet the demand power. At this time, the range extender is started to provide additional power to ensure the normal operation of the extended-range vehicle.

[0079] Step 260: When the required power is less than the start threshold, stop the range extender.

[0080] In the embodiment of the present application, when the required power of the whole vehicle is less than the start-up threshold, it means that the current power demand of the whole vehicle is low, and the energy generated by the power battery can meet the required power of the whole vehicle. At this time, the range extender is stopped.

[0081] In the embodiment of the present application, the hybrid power control system of the extended-range vehicle can obtain the charge state and required power of the extended-range vehicle in real time. The first charge state sets the minimum power limit for starting the range extender, and the second charge state is used as the shutdown threshold to prevent overcharging and protect the health of the battery. Based on the first charge state and the second charge state, it is ensured that the range extender can be started in time to replenish power when the battery of the whole vehicle is insufficient, while avoiding overcharging. Furthermore, when the required power of the whole vehicle exceeds the battery discharge capacity, a start threshold is introduced, so that the hybrid power control system of the extended-range vehicle can more accurately determine whether it is necessary to start / stop the range extender based on the current vehicle operating conditions. The above scheme achieves more accurate and stable control of the range extender by accurately setting the start / stop conditions of the range extender and flexibly adjusting it according to the actual needs of the whole vehicle, effectively improving the accuracy of the hybrid power control system of the extended-range vehicle to control the range extender, and improving the control effect of the range extender.

[0082] based on Figure 2 , please refer to Figure 3 , Figure 3 This is a flow chart of a range extender control method provided by an embodiment of the present application. Figure 2 Step 240 in the embodiment can be implemented as step 240a and step 240b, as follows:

[0083] Step 240a: Obtain the speed of the extended-range vehicle.

[0084] The above-mentioned vehicle speed refers to the speed of the vehicle during driving, usually in kilometers per hour or meters per second.

[0085] In an embodiment of the present application, the wheel speed sensor of the extended-range vehicle can continuously monitor the rotation speed of each wheel and transmit the vehicle speed to the hybrid control system through the vehicle network.

[0086] Step 240b: query the corresponding relationship between the state of charge, speed and start threshold of the extended-range vehicle through the state of charge and speed of the extended-range vehicle, and obtain the start threshold corresponding to the state of charge and speed of the extended-range vehicle.

[0087] In an embodiment of the present application, a database is provided in the hybrid control system, in which the correspondence between different pre-defined charge states, vehicle speeds and start thresholds of extended-range vehicles is stored. After the hybrid control system obtains the charge state and vehicle speed of the extended-range vehicle, the database is queried to obtain the start threshold corresponding to the charge state and vehicle speed of the extended-range vehicle.

[0088] In an embodiment of the present application, when the vehicle power demand of the extended-range vehicle exceeds the battery discharge power, the hybrid control system combines the real-time state of charge of the vehicle and the real-time vehicle speed to query the corresponding relationship table of the state of charge, vehicle speed and start threshold, obtains the start threshold that is closest to the current state of the vehicle, and improves the accuracy of the start threshold acquisition.

[0089] Based on the schemes shown in any one or more of the above-mentioned embodiments, in some embodiments, when the speed of the extended-range vehicle is less than a specified threshold and when the state of charge of the extended-range vehicle is less than a first state of charge, the hybrid power control system of the extended-range vehicle starts the range extender; when the state of charge of the extended-range vehicle rises to the second state of charge, the hybrid power control system stops the range extender.

[0090] In an embodiment of the present application, when the extended-range vehicle is traveling at a slower speed, the hybrid control system will continuously monitor the current state of charge of the vehicle. When the current state of charge is lower than the first state of charge, it indicates that the current power of the vehicle is insufficient to maintain normal operation of the vehicle. At this time, the hybrid control system starts the range extender to obtain additional power. When the state of charge of the extended-range vehicle rises to the second state of charge, it indicates that the current power reserve of the extended-range vehicle has reached a level that can maintain normal driving of the entire vehicle. In order to prevent excessive discharge of the battery, the range extender is stopped and the vehicle is restored to pure electric drive mode.

[0091] In the embodiment of the present application, the range extender is started when the vehicle speed is lower than a specified threshold and the state of charge is lower than the first state of charge, thereby ensuring that the extended-range vehicle will not over-discharge when driving at a low speed or frequently starting and stopping, maintaining the necessary power reserve, and effectively avoiding the decline in the extended-range power performance due to insufficient power, thereby ensuring the reliability and driving safety of the extended-range vehicle. When the state of charge of the extended-range vehicle returns to the second state of charge, the range extender is stopped in time to avoid waste of resources. By setting different states of charge to trigger the start / stop of the range extender, the control efficiency of the range extender is improved.

[0092] Based on the schemes shown in any one or more of the above-mentioned embodiments, in some embodiments, the hybrid power control system of the extended-range vehicle can also obtain the accelerator pedal opening of the extended-range vehicle, the ambient temperature of the extended-range vehicle, the altitude of the extended-range vehicle and the atmospheric pressure; based on the accelerator pedal opening of the extended-range vehicle, the ambient temperature of the extended-range vehicle, the altitude of the extended-range vehicle and the atmospheric pressure, respectively obtain the basic power generation power, ambient temperature correction coefficient and air pressure correction coefficient corresponding to the range extender; obtain the product of the basic power generation power, the ambient temperature correction coefficient and the air pressure correction coefficient as the target power generation power of the range extender; query the corresponding relationship between the target power generation power and the motor speed through the target power generation power, and obtain the target speed corresponding to the target power generation power; control the range extender to operate at the target speed.

[0093] The accelerator pedal opening refers to the speed at which the driver of the extended-range vehicle presses down the accelerator pedal, which can indicate the driver's demand for vehicle acceleration.

[0094] Among them, the above-mentioned ambient temperature refers to the air temperature of the environment in which the extended-range vehicle is currently located. The ambient temperature can affect the working efficiency of the engine and battery of the extended-range vehicle.

[0095] Among them, the above-mentioned altitude and atmospheric pressure determine the air density of the environment in which the extended-range vehicle is currently located.

[0096] In an embodiment of the present application, the hybrid control system can obtain this information through the sensors of the extended-range vehicle, for example, obtaining the real-time opening of the current accelerator pedal position through the accelerator pedal position sensor, obtaining the ambient temperature through real-time detection by the temperature sensor, and obtaining the current atmospheric pressure value of the extended-range vehicle through the air pressure sensor.

[0097] Among them, the above-mentioned basic power generation refers to the minimum power generation that the range extender should provide under ideal conditions.

[0098] The above-mentioned ambient temperature correction coefficient is a coefficient used to correct the efficiency fluctuation caused by the change of the ambient temperature of the extended-range vehicle.

[0099] The above-mentioned air pressure correction coefficient is a coefficient used to compensate for the performance change caused by the difference in altitude and air pressure in the environment where the extended-range vehicle is currently located.

[0100] In an embodiment of the present application, the hybrid control system of the extended-range vehicle can obtain the above-mentioned ambient temperature correction coefficient and air pressure correction coefficient by querying a pre-stored mapping table, or it can dynamically obtain the above-mentioned ambient temperature correction coefficient and air pressure correction coefficient through a built-in algorithm model combined with the current accelerator pedal opening, ambient temperature, altitude and atmospheric pressure.

[0101] Among them, the above-mentioned target power generation refers to the electric energy output power that the range extender should provide under the current environmental conditions and driving requirements.

[0102] The target rotation speed refers to the rotation speed that the range extender should maintain in order to achieve the target power generation capacity.

[0103] In an embodiment of the present application, after the hybrid power control system of the range-extended vehicle obtains the basic power generation power, the ambient temperature correction coefficient and the air pressure correction coefficient, the hybrid power control system can multiply these three values ​​to obtain the target power generation power of the range extender.

[0104] In the embodiment of the present application, after obtaining the target power generation, the hybrid control system can query the internally stored mapping table consisting of the target power generation and the motor speed, and obtain the target speed corresponding to the target power generation through the target power generation query.

[0105] In the embodiment of the present application, after the hybrid power control system obtains the target speed corresponding to the target power generation, a speed setting signal is sent to the range extender to instruct the range extender to operate at the target speed.

[0106] In an embodiment of the present application, the hybrid power control system of the extended-range vehicle can dynamically obtain the basic power generation power, ambient temperature correction coefficient and air pressure correction coefficient according to the real-time accelerator pedal opening, ambient temperature, altitude and atmospheric pressure information of the extended-range vehicle, and obtain the target speed based on the basic power generation power, ambient temperature correction coefficient and air pressure correction coefficient, so that the range extender can operate at the target speed under different ambient temperatures and altitudes, maintain optimal performance, and improve the control effect of the range extender.

[0107] Based on the schemes shown in any one or more of the above embodiments, in some embodiments, the hybrid power control system of the extended-range vehicle queries the correspondence between the accelerator pedal opening, the vehicle speed and the basic power generation of the extended-range vehicle through the accelerator pedal opening and the vehicle speed of the extended-range vehicle, and obtains the basic power generation of the range extender; queries the correspondence between the ambient temperature of the extended-range vehicle, the state of charge of the extended-range vehicle and the ambient temperature correction coefficient through the ambient temperature of the extended-range vehicle and the state of charge of the extended-range vehicle, and obtains the ambient temperature correction coefficient of the range extender; queries the correspondence between the altitude of the extended-range vehicle, the atmospheric pressure and the air pressure correction coefficient through the altitude of the extended-range vehicle and the atmospheric pressure, and obtains the air pressure correction coefficient of the range extender.

[0108] In an embodiment of the present application, a hybrid power control system may construct a mapping table for storing the correspondence between the accelerator pedal opening, vehicle speed and basic power generation power of an extended-range vehicle. After the hybrid power control system obtains the accelerator pedal opening and vehicle speed of the extended-range vehicle, it queries the mapping table to obtain the basic power generation power corresponding to the accelerator pedal opening and vehicle speed of the extended-range vehicle.

[0109] In an embodiment of the present application, a hybrid power control system may construct a mapping table for storing the correspondence between the ambient temperature of the extended-range vehicle, the state of charge of the extended-range vehicle, and the ambient temperature correction coefficient. After the hybrid power control system obtains the ambient temperature of the extended-range vehicle and the state of charge of the extended-range vehicle, it queries the mapping table to obtain the ambient temperature correction coefficient of the range extender.

[0110] In an embodiment of the present application, the hybrid control system can construct a mapping table for storing the correspondence between the altitude, atmospheric pressure and air pressure correction coefficient of the extended-range vehicle. After the hybrid control system obtains the altitude and atmospheric pressure of the extended-range vehicle, it queries the mapping table to obtain the air pressure correction coefficient of the range extender.

[0111] In an embodiment of the present application, the hybrid control system queries the corresponding mapping table according to the current accelerator pedal opening and vehicle speed of the extended-range vehicle, obtains the basic power generation power that best meets the current vehicle driving needs, effectively ensures the power output of the range extender, obtains the ambient temperature correction coefficient in combination with the ambient temperature and charge state of the extended-range vehicle, dynamically adjusts the power generation efficiency of the range extender, and queries the air pressure correction coefficient according to the altitude and atmospheric pressure information. The air pressure correction coefficient can be used to optimize the working efficiency of the range extender under different altitudes and air pressure conditions, avoids performance fluctuations caused by changes in air density, and effectively improves the control efficiency of the range extender.

[0112] Based on the solutions shown in any one or more of the above embodiments, in some embodiments, the hybrid control system of the extended-range vehicle queries the correspondence between the target speed and the control torque of the generator through the target speed within a specified time period before the range extender stops completely, and obtains the target control torque corresponding to the target speed; and controls the range extender to operate at the target control torque.

[0113] In order to explain in detail the steps of implementing the method described in the above patent claims, we can break it down into a series of specific operation processes. This method is mainly used to optimize the operating efficiency of the range extender in the extended-range electric vehicle (REEV) before it stops, ensuring that it works at the most appropriate torque value, thereby maximizing the use of residual energy and smoothly transitioning to the shutdown state.

[0114] The above-mentioned specified time period is a predetermined time period before the range extender completely stops. Within the specified time period, the working state of the range extender can be adjusted without affecting the performance of the range extender vehicle.

[0115] In an embodiment of the present application, when the range extender is about to stop, the hybrid control system can obtain the target control torque corresponding to the target speed by looking up a mapping table after obtaining the target speed. The mapping table stores the correspondence between the target speed and the control torque of the generator.

[0116] In the embodiment of the present application, after the hybrid power control system obtains the target control torque, it sends an operation instruction to the range extender, and the operation instruction includes the target control torque to ensure that the range extender can operate at the target control torque.

[0117] In an embodiment of the present application, by dynamically adjusting the control torque of the range extender based on the target speed of the range extender within a specified time before the range extender stops completely, wear and tear of the range extender hardware caused by rapid stopping and poor user experience such as vehicle jitter are avoided, which helps to improve the stability of the range extender during the shutdown process, effectively improves the stability of the range extender shutdown, and effectively improves the control effect of the range extender.

[0118] Based on the above Figures 2 to 3 The steps in the embodiments of the present application illustrate an application of a start-stop strategy and calibration method for an extended-range electric vehicle. The specific contents are as follows:

[0119] 1. A start-stop strategy and calibration method for extended-range electric vehicles, mainly using calibration tools such as CANape and INCA to modify calibration data and collect and analyze data;

[0120] 2. A start-stop strategy and calibration method for an extended-range electric vehicle, the main steps of which are: setting a start-stop calibration target, collecting operating data of the test vehicle under various working conditions, establishing a start-stop strategy, actual vehicle verification, start-stop strategy optimization and calibration, etc.;

[0121] 3. Furthermore, the vehicle defaults to the engine shutdown state. When the required power is greater than the start threshold (which can be calibrated), the engine is started. When the required power is not greater than the start threshold (which can be calibrated), the engine remains in the shutdown state. The required power can be obtained by the driver's required power (PedalMap×vehicle speed), and the start threshold can be obtained by SOC and vehicle speed.

[0122] 4. Furthermore, after starting, when the required power is less than the shutdown threshold (which can be calibrated), the engine starts the shutdown process and enters the shutdown state, otherwise the engine continues to run; wherein, the required power can be obtained by the driver's required power (PedalMap×vehicle speed), and the shutdown threshold can be obtained by SOC and vehicle speed.

[0123] For example, please refer to Figure 4 , Figure 4 This is a flowchart of a start-stop strategy optimization and calibration process provided by an embodiment of the present application, which includes the following steps:

[0124] Step 41: Set the start and stop targets.

[0125] In an embodiment of the present application, a computer device collects basic data, and the basic data includes but is not limited to: a sweep of the external characteristics of the engine, a sweep of the available discharge power of the battery in a constant-speed cycle discharge in multiple vehicle speed ranges, collection of the power demanded by the driver at different accelerator pedal openings, the actual workload intensity of the range extender, the power generation efficiency, etc.

[0126] Step 42: Collect basic data and preliminarily establish a start-stop strategy.

[0127] For example, please refer to Figure 5 , Figure 5 : is a schematic diagram of a start-stop strategy provided by an embodiment of the present application, and the strategy includes two judgment steps:

[0128] Step S1: Determine whether the required power is greater than the starting power.

[0129] In the embodiment of the present application, the range extender is in a shutdown state by default. At this time, the HCU determines whether the demand power of the extended-range vehicle is greater than the start threshold. The demand power may be the driver's demand power, and the start threshold may be obtained by the charge state and the vehicle speed. When the demand power is greater than the start threshold, the engine in the range extender is started. When the demand power is not greater than the start threshold, the engine in the range extender is not started and the shutdown state is maintained.

[0130] Step S2: Determine whether the required power is less than the startup threshold.

[0131] In an embodiment of the present application, after starting the engine in the range extender, it is further determined whether the required power is less than the shutdown threshold, and the shutdown threshold can be obtained by the charge state and the vehicle speed; when the required power is less than the shutdown threshold, the HCU controls the range extender to enter the shutdown state, and when the required power is not less than the shutdown threshold, the HCU starts the engine.

[0132] Step 43: Actual vehicle verification.

[0133] In this start-stop strategy, an SOC electric balance threshold is set. When the extended-range vehicle has no power demand, it starts automatically when the SOC drops to 12%, and stops automatically when the SOC reaches 15%. When the extended-range vehicle has power demand, it starts when the demand power is greater than the start threshold (the SOC and vehicle speed table value, which can be calibrated). When the demand power is less than the stop threshold (the SOC and vehicle speed table value, which can be calibrated), the engine starts the shutdown process and enters the stop state. Under high vehicle speed and high power demand, the SOC balance point is appropriately increased. Based on the initially established start-stop strategy, actual vehicle verification is carried out to conduct a preliminary survey of the actual vehicle performance.

[0134] Step 44: Start-stop strategy optimization and calibration.

[0135] In the embodiment of the present application, the idle power generation (parking power generation) start-stop, power, and speed strategy are optimized and calibrated. When the speed of the extended-range vehicle is less than 3km / h and the gear is in the P / N gear, it enters the idle power generation mode; when the SOC is lower than 12% (the above set value), the engine in the extended-range vehicle automatically starts, and automatically stops when the SOC rises to 15% (the above set value);

[0136] In the embodiment of the present application, the idle power generation power is composed of the sum of the idle power generation power point (calibrated value) and the high-voltage accessory power, which can be divided into three different power points: high, base, and low. The parking power generation power can be calibrated. According to the different gradients of power generation power (demand power), a one-dimensional lookup table corresponding to the power generation speed can be established and calibrated.

[0137] In an embodiment of the present application, the engine start / stop, power, and speed strategies are optimized and calibrated in the series operation mode. The current required power can be calculated based on the vehicle speed and load, and different table lookups can be performed according to different preset energy modes and driving modes.

[0138] In an embodiment of the present application, by querying the engine starting power threshold table (a two-dimensional table of displayed SOC and vehicle speed), the basic starting power point can be obtained, and then a one-dimensional table lookup correction of a series of coefficients such as ambient temperature and different altitudes (calibrable) is obtained to obtain a corrected starting power table. When the required power is greater than the corrected starting power point, the engine starts; conversely, an engine shutdown power threshold table is established, and the table is looked up and a series of corrections are performed to obtain a corrected shutdown power table. When the required power is less than the corrected shutdown power point, the engine shuts down; after the start is completed, the basic power generation power (calibrable) of the range extender is obtained by looking up the table according to different accelerator pedal openings and vehicle speeds, and the ambient temperature correction coefficient (calibrable) is obtained according to the two-dimensional table lookup of ambient temperature and displayed SOC. According to the one-dimensional table lookup of atmospheric pressure at different altitudes, the air pressure correction coefficient (calibrable) is obtained, and the above three are multiplied to obtain the target power generation power; then a one-dimensional table lookup is performed based on the power to obtain the corresponding speed value (calibrable) under the power generation power.

[0139] In some embodiments, the HCU can establish a shutdown assist strategy. In order to ensure the stability of engine shutdown, a shutdown assist strategy is established, the function is turned on during shutdown, and the shutdown assist time (calibrable) is set. For example, the shutdown assist time is set to 2s. When the engine is shut down, the torque control (calibrable) of the generator can be obtained by looking up the table according to different speeds.

[0140] Step 45: Determine whether the expected goal has been achieved.

[0141] In the embodiment of the present application, based on the above-mentioned start-stop strategy optimization, a real vehicle test is carried out. If the expected goal is achieved, the strategy optimization and calibration tasks are completed. Otherwise, it is necessary to optimize the start-stop strategy and calibration data again and verify it with the real vehicle, and so on and so forth until the expected goal is achieved.

[0142] In the embodiment of the present application, by calibrating and applying the start-stop strategy method of the extended-range electric vehicle, the start-stop strategy of the electric vehicle range extender can be optimized. The start-stop strategy can be optimized based on the driving, charging and discharging, energy utilization and other strategic schemes of the new energy vehicle, which can effectively improve the energy utilization efficiency, provide users with a better driving experience, and enhance product competitiveness.

[0143] The above is only an embodiment of the present application and should not be regarded as limiting the present application. Professionals should understand that various deformations and modifications can be made to the embodiments to adapt to different application requirements. Therefore, the scope of the present application should be limited by the claims attached to the claims.

[0144] Please refer to Figure 6 , which shows a block diagram of a range extender control device provided by an exemplary embodiment of the present application. The data processing device can be implemented as all or part of a computer device by hardware or a combination of hardware and software to achieve the above Figures 2 to 3 All or part of the steps in the illustrated embodiments.

[0145] like Figure 6 As shown, the range extender control device includes:

[0146] The information acquisition module 601 is used to acquire the state of charge and required power of the extended-range vehicle; the required power is the driving power of the extended-range vehicle plus the accessory power of the extended-range vehicle;

[0147] A first starting module 602, configured to start the range extender when the required power is less than the battery discharge power of the range-extended vehicle and the charge state of the range-extended vehicle satisfies a first charge state;

[0148] A first stop module 603 is used to stop the range extender when the required power is less than the battery discharge power of the range-extended vehicle and the charge state of the range-extended vehicle meets a second charge state; the second charge state is greater than the first charge state;

[0149] The startup threshold acquisition module 604 is used to acquire the startup threshold when the required power is greater than the battery discharge power of the extended-range vehicle;

[0150] The second starting module 605 is used to start the range extender when the required power is greater than the starting threshold;

[0151] The second stopping module 606 is configured to stop the range extender when the required power is less than the start threshold.

[0152] In some embodiments, the start threshold acquisition module 604 is used to obtain the speed of the extended-range vehicle; through the charge state and speed of the extended-range vehicle, the correspondence between the charge state, speed and start threshold of the extended-range vehicle is queried to obtain the start threshold corresponding to the charge state and speed of the extended-range vehicle.

[0153] In some embodiments, when the vehicle speed is less than a specified threshold, the device further comprises:

[0154] A third starting module, used for starting the range extender when the state of charge of the range-extended vehicle is less than the first state of charge;

[0155] The third stopping module is used to stop the range extender when the charge state of the range-extended vehicle rises to a second charge state.

[0156] In some embodiments, the apparatus further comprises:

[0157] The first information acquisition module 601 is used to acquire the accelerator pedal opening of the extended-range vehicle, the ambient temperature of the extended-range vehicle, the altitude of the extended-range vehicle, and the atmospheric pressure;

[0158] The second information acquisition module 601 is used to obtain the basic power generation, ambient temperature correction factor and air pressure correction factor corresponding to the range extender based on the accelerator pedal opening of the range extender, the ambient temperature of the range extender, the altitude of the range extender and the atmospheric pressure;

[0159] A target power generation acquisition module is used to obtain the product of the basic power generation, the ambient temperature correction factor and the air pressure correction factor as the target power generation of the range extender;

[0160] The target speed acquisition module is used to query the corresponding relationship between the target power generation and the motor speed through the target power generation, and obtain the target speed corresponding to the target power generation;

[0161] The first operating module is used to control the range extender to operate at a target speed.

[0162] In some embodiments, the second information acquisition module 601 is used to query the correspondence between the accelerator pedal opening, vehicle speed and basic power generation of the extended-range vehicle through the accelerator pedal opening and vehicle speed of the extended-range vehicle, and obtain the basic power generation of the range extender; query the correspondence between the ambient temperature of the extended-range vehicle, the state of charge of the extended-range vehicle and the ambient temperature correction coefficient through the ambient temperature of the extended-range vehicle and the state of charge of the extended-range vehicle, and obtain the ambient temperature correction coefficient of the range extender; query the correspondence between the altitude of the extended-range vehicle, the atmospheric pressure and the air pressure correction coefficient through the altitude of the extended-range vehicle and the atmospheric pressure, and obtain the air pressure correction coefficient of the range extender.

[0163] In some embodiments, the apparatus further comprises:

[0164] A target control torque acquisition module is used to query the corresponding relationship between the target speed and the control torque of the generator through the target speed within a specified time period before the range extender is completely stopped, and obtain the target control torque corresponding to the target speed;

[0165] The second operation module is used to control the range extender to operate at a target control torque.

[0166] Please refer to Figure 7 , Figure 77 is a schematic diagram of the structure of a computer device provided by an exemplary embodiment of the present application. The computer device 700 includes a central processing unit (CPU) 701, a system memory 704 including a random access memory (RAM) 702 and a read-only memory (ROM) 703, and a system bus 705 connecting the system memory 704 and the central processing unit 701. The computer device 700 also includes a basic input / output system (I / O system) 706 that helps transmit information between various devices in the computer, and a large-capacity storage device 707 for storing an operating system 713, application programs 714 and other program modules 715.

[0167] The basic input / output system 706 includes a display 708 for displaying information and an input device 709 such as a mouse and a keyboard for user inputting information. The display 708 and the input device 709 are connected to the central processing unit 701 through an input / output controller 710 connected to the system bus 705. The basic input / output system 706 may also include an input / output controller 710 for receiving and processing inputs from a plurality of other devices such as a keyboard, a mouse, or an electronic stylus. Similarly, the input / output controller 710 also provides output to a display screen, a printer, or other types of output devices.

[0168] The mass storage device 707 is connected to the central processing unit 701 through a mass storage controller (not shown) connected to the system bus 705. The mass storage device 707 and its associated computer readable media provide non-volatile storage for the computer device 700. That is, the mass storage device 707 may include a computer readable medium (not shown) such as a hard disk or a CD-ROM (Compact Disc Read-Only Memory) drive.

[0169] Without loss of generality, computer readable media may include computer storage media and communication media. Computer storage media include volatile and non-volatile, removable and non-removable media implemented by any method or technology for storing information such as computer readable instructions, data structures, program modules or other data. Computer storage media include RAM (Random Access Memory), ROM (Read-Only Memory), EPROM (Erasable Programmable Read-Only Memory), EEPROM (Electrically Erasable Programmable Read-Only Memory), flash memory or other solid-state storage technologies, CD-ROM, DVD (Digital Video Disc) or other optical storage, cassettes, tapes, disk storage or other magnetic storage devices. Of course, those skilled in the art will appreciate that computer storage media are not limited to the above. The above-mentioned system memory 704 and mass storage device 707 can be collectively referred to as memory.

[0170] The computer device 700 can be connected to the Internet or other network devices through a network interface unit 711 connected to the system bus 705 .

[0171] The memory also includes one or more programs, one or more programs are stored in the memory, and the central processing unit 701 implements the one or more programs by executing the one or more programs. Figures 2 to 4 All or part of the steps in the method shown.

[0172] In an exemplary embodiment, a chip is also provided. The chip includes a programmable logic circuit and / or program instructions. When the chip runs on a computer device, it is used to implement all or part of the steps of the method shown in the above embodiments of the present application.

[0173] In an exemplary embodiment, a computer program product is also provided, the computer program product includes computer instructions, the computer instructions are stored in a computer-readable storage medium. The processor of the computer device reads the computer instructions from the computer-readable storage medium, and the processor reads and executes the computer instructions from the computer-readable storage medium to implement all or part of the steps of the method shown in the above-mentioned various embodiments of the present application.

[0174] In an exemplary embodiment, a computer-readable storage medium is also provided, in which a computer program is stored. The computer program is loaded and executed by a processor to implement all or part of the steps of the method shown in the above-mentioned embodiments of the present application.

[0175] A person skilled in the art will understand that all or part of the steps to implement the above embodiments may be accomplished by hardware or by instructing related hardware through a program. The above program may be stored in a computer-readable storage medium. The above storage medium may be a read-only memory, a disk or an optical disk, etc.

[0176] Those skilled in the art should be aware that in one or more of the above examples, the functions described in the embodiments of the present application can be implemented with hardware, software, firmware, or any combination thereof. When implemented using software, these functions can be stored in a computer-readable medium or transmitted as one or more instructions or codes on a computer-readable medium. Computer-readable media include computer storage media and communication media, wherein the communication media include any media that facilitates the transmission of a computer program from one place to another. The storage medium can be any available medium that a general or special-purpose computer can access.

[0177] The above are only optional embodiments of the present application and are not intended to limit the present application. Any modifications, equivalent substitutions, improvements, etc. made within the spirit and principles of the present application should be included in the protection scope of the present application.

Claims

1. A range extender control method, characterized in that: The method is performed by a hybrid power control system of an extended-range vehicle, and the method comprises: Acquiring the state of charge and required power of the extended-range vehicle; the required power is the driving power of the extended-range vehicle plus the accessory power of the extended-range vehicle; When the required power is less than the battery discharge power of the extended-range vehicle and the state of charge of the extended-range vehicle satisfies a first state of charge, starting the range extender; When the required power is less than the battery discharge power of the extended-range vehicle and the state of charge of the extended-range vehicle satisfies a second state of charge, stopping the range extender; the second state of charge is greater than the first state of charge; When the required power is greater than the battery discharge power of the extended-range vehicle, obtaining a startup threshold; When the required power is greater than the start threshold, starting the range extender; When the required power is less than the start threshold, the range extender is stopped.

2. The method according to claim 1, characterized in that When the required power is greater than the battery discharge power of the extended-range vehicle, obtaining the startup threshold value includes: Obtaining the speed of the extended-range vehicle; The corresponding relationship between the state of charge of the extended-range vehicle, the vehicle speed and the start threshold is queried through the state of charge of the extended-range vehicle and the vehicle speed, and the start threshold corresponding to the state of charge of the extended-range vehicle and the vehicle speed is obtained.

3. The method according to claim 2, characterized in that When the vehicle speed is less than a specified threshold, the method further includes: When the state of charge of the extended-range vehicle is less than the first state of charge, starting the range extender; When the state of charge of the extended-range vehicle rises to the second state of charge, the range extender is stopped.

4. The method according to claim 1, characterized in that: The method further comprises: Acquiring the accelerator pedal opening of the extended-range vehicle, the ambient temperature of the extended-range vehicle, the altitude of the extended-range vehicle, and the atmospheric pressure; Based on the accelerator pedal opening of the extended-range vehicle, the ambient temperature of the extended-range vehicle, the altitude of the extended-range vehicle, and the atmospheric pressure, respectively obtain the basic power generation power, ambient temperature correction coefficient, and air pressure correction coefficient corresponding to the range extender; Obtaining the product of the basic power generation, the ambient temperature correction coefficient and the air pressure correction coefficient as the target power generation of the range extender; By using the target power generation, querying the corresponding relationship between the target power generation and the motor speed, and obtaining the target speed corresponding to the target power generation; The range extender is controlled to operate at the target speed.

5. The method according to claim 4, characterized in that The method of obtaining the basic power generation power, the ambient temperature correction factor and the air pressure correction factor corresponding to the range extender based on the accelerator pedal opening of the range-extended vehicle, the ambient temperature of the range-extended vehicle, the altitude of the range-extended vehicle and the atmospheric pressure, respectively, includes: By using the accelerator pedal opening of the extended-range vehicle and the vehicle speed, querying the corresponding relationship among the accelerator pedal opening of the extended-range vehicle, the vehicle speed and the basic power generation, and obtaining the basic power generation of the range extender; According to the ambient temperature of the extended-range vehicle and the state of charge of the extended-range vehicle, query the corresponding relationship between the ambient temperature of the extended-range vehicle, the state of charge of the extended-range vehicle and the ambient temperature correction coefficient to obtain the ambient temperature correction coefficient of the range extender; The corresponding relationship between the altitude and atmospheric pressure of the extended-range vehicle is queried to obtain the atmospheric pressure correction coefficient of the range extender.

6. The method according to any one of claims 4 or 5, characterized in that: The method further comprises: Within a specified time period before the range extender completely stops, querying the corresponding relationship between the target speed and the control torque of the generator through the target speed, and obtaining the target control torque corresponding to the target speed; The range extender is controlled to operate at the target control torque.

7. A range extender control device, characterized in that: The device comprises: An information acquisition module, used to acquire the state of charge and required power of the extended-range vehicle; the required power is the driving power of the extended-range vehicle plus the accessory power of the extended-range vehicle; A first starting module, configured to start the range extender when the required power is less than the battery discharge power of the extended-range vehicle and the state of charge of the extended-range vehicle satisfies a first state of charge; A first stopping module, configured to stop the range extender when the required power is less than the battery discharge power of the range-extended vehicle and the state of charge of the range-extended vehicle satisfies a second state of charge; the second state of charge is greater than the first state of charge; A startup threshold acquisition module, used for acquiring a startup threshold when the required power is greater than the battery discharge power of the extended-range vehicle; A second starting module, configured to start the range extender when the required power is greater than the starting threshold; The second stopping module is used to stop the range extender when the required power is less than the start threshold.

8. A computer device, characterized in that: The computer device includes a processor and a memory, wherein instructions are stored in the memory, and the instructions are executed by the processor to implement the range extender control method as described in any one of claims 1 to 6.

9. A computer-readable storage medium, characterized in that: The storage medium stores instructions, and the instructions are executed by a processor of a computer device to implement the range extender control method as described in any one of claims 1 to 6.

10. A computer program product, characterized in that The computer program product includes computer instructions, which are stored in a computer-readable storage medium; the computer instructions are read and executed by a processor of a computer device to implement the range extender control method as described in any one of claims 1 to 6.

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