Endurance control method, device and equipment for extended-range vehicle and medium

Abstract

The invention provides an endurance control method, device and equipment for an extended-range vehicle and a medium, and relates to the technical field of vehicles, the method comprises the steps that in each period, first residual energy and second residual energy of the vehicle are obtained, the first residual energy is determined according to vehicle actual condition information and a memory oil-electricity conversion ratio of the vehicle, and the second residual energy is determined according to a memory oil-electricity conversion ratio of the vehicle; the second residual energy is determined according to vehicle actual condition information and a real-time oil-electricity conversion ratio of the vehicle; when the first residual energy is smaller than a first threshold value and the second residual energy is smaller than a second threshold value, it is determined that a limit endurance mode is started for the vehicle; and according to the limit endurance mode, endurance control is conducted on the vehicle, and according to the limit endurance mode, endurance control is conducted on the vehicle with fuel consumption of the vehicle as the target. Therefore, the energy utilization efficiency is improved, the risk that the vehicle breaks down due to exhaustion of electric quantity or oil quantity is reduced, the driving anxiety is reduced, and the driving safety is improved.

Description

Technical Field

[0001] The present application relates to the field of vehicle technology, and in particular to a range control method, device, equipment and medium for an extended-range vehicle. Background Art

[0002] In recent years, as a new energy vehicle technology, the core of extended-range electric vehicles is to combine internal combustion engines and electric drive systems to extend the service life of batteries and provide higher mileage. Although extended-range technology provides longer mileage, it still faces some challenges and problems in practical applications.

[0003] When the vehicle is low on battery and fuel and cannot be recharged in time, users cannot judge whether the vehicle is at the limit of its endurance, nor can they plan the control of the vehicle at the limit of its endurance. For example, when the vehicle is low on battery and fuel while driving on a highway, it is uncertain whether it can reach a gas station, etc. This can easily lead to driving anxiety and safety hazards for users. Summary of the invention

[0004] In view of this, the embodiments of the present application provide a range control method, device, equipment and medium for an extended-range vehicle, so as to overcome the above-mentioned problems or at least partially solve the above-mentioned problems.

[0005] A first aspect of an embodiment of the present application provides a range control method for an extended-range vehicle, the method comprising: In each cycle, a first remaining energy and a second remaining energy of the vehicle are obtained, wherein the first remaining energy is determined based on vehicle real-time information of the vehicle and a memorized oil-to-electricity conversion ratio, and the second remaining energy is determined based on vehicle real-time information of the vehicle and a real-time oil-to-electricity conversion ratio; When the first remaining energy is less than a first threshold and the second remaining energy is less than a second threshold, determining to activate the extreme endurance mode for the vehicle; The vehicle's cruising range is controlled according to the extreme cruising range mode, and the extreme cruising range mode is: the vehicle's cruising range is controlled with the consumption of the vehicle's fuel as the goal.

[0006] Optionally, the obtaining of the first remaining energy and the second remaining energy of the vehicle includes: Determining the first remaining energy according to the remaining fuel amount and the remaining power amount of the vehicle, and the memorized fuel-to-electricity conversion ratio; When the first remaining energy is less than the first threshold, determining the real-time oil-to-electricity conversion ratio according to the fuel injection amount signal of the vehicle, the cycle duration of the cycle, the current value of the vehicle, and the voltage value of the vehicle; The second remaining energy is determined according to the remaining oil amount, the remaining electricity amount, and the real-time oil-to-electricity conversion ratio.

[0007] Optionally, the vehicle is controlled to travel at a certain speed according to the extreme cruising mode, and the extreme cruising mode is: controlling the vehicle to travel at a certain speed with the goal of consuming the fuel of the vehicle, including: When the remaining fuel amount displayed on the instrument of the vehicle is greater than 0, and the fuel rail pressure of the vehicle is greater than 0, controlling the range extender of the vehicle to start; When the remaining fuel amount displayed on the instrument of the vehicle is 0, the range extender is controlled to shut down.

[0008] Optionally, after the range extender of the vehicle is started, the method further comprises: Acquiring the vehicle speed of the vehicle, and determining the target power generation according to the vehicle speed and a target mapping relationship, wherein the target mapping relationship is used to indicate a mapping relationship between the vehicle speed and the power generation; The range extender of the vehicle is controlled to generate electricity according to the target generated power.

[0009] Optionally, after determining to turn on the extreme endurance mode for the vehicle, the method further includes: determining a base oil level of the vehicle; According to the real-time oil-to-electricity conversion ratio, converting the bottom oil amount into a first equivalent amount of electricity; According to the corresponding relationship between the power and the cruising range of the vehicle, the driving cruising range corresponding to the first equivalent power is determined, and the driving cruising range is displayed.

[0010] Optionally, after determining to turn on the extreme endurance mode for the vehicle, the method further includes: determining a base oil level of the vehicle; Determine a second equivalent amount of electricity according to the real-time oil-to-electricity conversion ratio, where the second equivalent amount of electricity is: an equivalent amount of electricity corresponding to the total amount of oil between the bottom oil amount and the remaining oil amount; In each cycle, the total power between the second equivalent power and the remaining power is determined, and the remaining range corresponding to the total power is determined according to the corresponding relationship between the power and range of the vehicle, and the remaining range is displayed.

[0011] Optionally, determining the bottom oil amount of the vehicle includes: Acquire a plurality of base oil usages recorded in a plurality of historical driving conditions of the vehicle; determining the maximum base oil usage value among the plurality of base oil usage amounts as the base oil amount of the vehicle; The base oil usage is determined according to the fuel injection amount signal of the vehicle and the cycle duration of the cycle when the remaining oil amount is 0 and the fuel rail pressure of the vehicle is greater than 0.

[0012] A second aspect of an embodiment of the present application provides a cruising range control device for an extended-range vehicle, the device comprising: an acquisition module, configured to acquire, in each cycle, a first residual energy and a second residual energy of the vehicle, wherein the first residual energy is determined based on vehicle real-time information of the vehicle and a memorized oil-to-electricity conversion ratio, and the second residual energy is determined based on vehicle real-time information of the vehicle and a real-time oil-to-electricity conversion ratio; a determination module, configured to determine to enable a limit endurance mode for the vehicle when the first remaining energy is less than a first threshold and the second remaining energy is less than a second threshold; A control module is used to control the cruising range of the vehicle according to the extreme cruising range mode, wherein the extreme cruising range mode is to control the cruising range of the vehicle with the goal of consuming the fuel of the vehicle.

[0013] According to a third aspect of an embodiment of the present application, an electronic device is provided, comprising a memory, a processor, and a computer program stored in the memory, wherein the processor executes the computer program to implement the method described in the first aspect.

[0014] In a fourth aspect of the embodiments of the present application, a computer program product is provided, including a computer program, which, when executed by a processor, implements the method described in the first aspect.

[0015] According to a fifth aspect of the embodiments of the present application, a computer-readable storage medium is provided, on which a computer program is stored, wherein when the computer program is executed by a processor, the method described in the first aspect is implemented.

[0016] Beneficial effects of this application: The present application provides a range control method, device, equipment and medium for an extended-range vehicle, and relates to the field of vehicle technology. The method comprises: obtaining a first residual energy and a second residual energy of the vehicle in each cycle, the first residual energy being determined based on the vehicle's real-time information and a memorized oil-to-electricity conversion ratio, and the second residual energy being determined based on the vehicle's real-time information and a real-time oil-to-electricity conversion ratio; when the first residual energy is less than a first threshold value and the second residual energy is less than a second threshold value, determining to turn on an extreme range mode for the vehicle; performing range control on the vehicle in accordance with the extreme range mode, using the memorized oil-to-electricity conversion ratio and the real-time oil-to-electricity conversion ratio to calculate the residual energy to determine whether the vehicle is in the extreme range mode; when in the extreme range mode, performing range control on the vehicle to improve energy utilization efficiency, thereby reducing the risk of vehicle breakdown due to exhaustion of power or oil, and improving driving safety. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] The drawings constituting a part of the present application are used to provide a further understanding of the present application. The illustrative embodiments of the present application and their descriptions are used to explain the present application and do not constitute an improper limitation on the present application.

[0018] In order to more clearly illustrate the technical solution of the present application, the drawings required for use in the description of the present application will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present application. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying any creative labor.

[0019] Figure 1 It is a flow chart of a range control method for an extended-range vehicle provided in one embodiment of the present application; Figure 2 This is a flow chart of obtaining residual energy in a range control method for an extended-range vehicle provided in an embodiment of the present application; Figure 3 This is a flow chart of performing range control in a range control method for an extended-range vehicle provided in one embodiment of the present application; Figure 4 It is a schematic diagram of a framework of a cruising range control device for an extended-range vehicle provided in one embodiment of the present application; Figure 5 It is a schematic diagram of an electronic device provided by an embodiment of the present application. DETAILED DESCRIPTION

[0020] It should be noted that, in the absence of conflict, the embodiments and features in the embodiments of the present application may be combined with each other.

[0021] The following will be combined with the drawings in the embodiments of the present application to clearly and completely describe the technical solutions in the embodiments of the present application. Obviously, the described embodiments are part of the embodiments of the present application, not all of the embodiments. Based on the embodiments in the present application, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of this application.

[0022] Figure 1 is a flow chart of a range control method for an extended-range vehicle provided in one embodiment of the present application, such as Figure 1 shown.

[0023] An embodiment of the present application provides a range control method for an extended-range vehicle, the method comprising: Step S101, in each cycle, obtaining a first remaining energy and a second remaining energy of the vehicle, wherein the first remaining energy is determined based on the vehicle's real-time information and a memorized oil-to-electricity conversion ratio, and the second remaining energy is determined based on the vehicle's real-time information and a real-time oil-to-electricity conversion ratio; Step S102, when the first remaining energy is less than a first threshold and the second remaining energy is less than a second threshold, determining to turn on the extreme endurance mode for the vehicle; Step S103, controlling the cruising range of the vehicle according to the extreme cruising range mode, wherein the extreme cruising range mode is to control the cruising range of the vehicle with the goal of consuming the fuel of the vehicle.

[0024] First, in step S101, the vehicle controller periodically monitors the driving situation to determine whether the vehicle is running low on fuel or electricity. The cycle refers to the operating cycle of the vehicle controller, for example, it can be every 0.01 seconds or every 1 second. This cycle is the frequency at which the controller performs checks and updates the status. In each cycle, the controller first obtains the remaining energy information of the vehicle. The remaining energy information includes the first remaining energy and the second remaining energy. The first remaining energy is the equivalent remaining power, which can integrate the energy status of the vehicle's battery and fuel to intuitively display the total remaining energy of the vehicle. Specifically, the first remaining energy is calculated based on the vehicle's real-time information (e.g., remaining fuel and remaining power SOE) and the memory fuel-to-electricity conversion ratio (η memory). The memory fuel-to-electricity conversion ratio is the ratio of fuel to electricity based on the vehicle's historical real-time fuel-to-electricity conversion ratio, which is used to estimate the ratio of fuel to electricity under normal circumstances.

[0025] The second remaining energy is the equivalent accurate remaining power, which is a more accurate value for the equivalent remaining power. It takes into account the current oil-to-electricity conversion ratio of the vehicle, and can therefore reflect the current actual remaining energy of the vehicle. The second remaining energy is also based on the vehicle's real-time information, but uses the real-time oil-to-electricity conversion ratio (η). The real-time oil-to-electricity conversion ratio is dynamically calculated based on the current driving conditions and vehicle status, and can more accurately reflect the actual efficiency of converting the current amount of oil into electricity.

[0026] Further, in step S102, when the first remaining energy (equivalent remaining power) is less than a preset first threshold value, and the second remaining energy (equivalent accurate remaining power) is less than a preset second threshold value, the controller determines that the vehicle is currently in a state where the extreme endurance mode needs to be turned on, i.e., the extreme endurance mode. The extreme endurance mode can maximize the vehicle's endurance by optimizing the vehicle's power generation control strategy when both the power and fuel levels are low.

[0027] The first threshold and the second threshold are pre-set according to the state of charge (SOC) of the vehicle's power battery and the required power of the driving cycle, as well as the vehicle's endurance. For example, the first threshold may be 20 kwh, and the second threshold may be 10 kwh.

[0028] Finally, in step S103, in the extreme endurance mode, the controller will adjust the vehicle's operating parameters, such as the start and stop of the range extender and the power generation, to achieve rapid fuel consumption to increase the vehicle's pure electric endurance. For example, the power generation is readjusted according to the vehicle speed, and at low speeds, the power generation is increased to speed up the consumption of the bottom fuel and / or the use of the remaining fuel, thereby converting the unknown bottom fuel into the known pure electric endurance to extend the vehicle's endurance.

[0029] It should be noted that in each embodiment of the present invention, the controller will obtain relevant information of the vehicle in real time, such as: 1. Obtain the fuel rail pressure signal and fuel injection quantity signal k (L / s) of the EMS controller; 2. Receive the remaining power SOE (kwh) signal, current IBMS, and voltage UBMS from BMS; 3. Receive the remaining fuel (L) signal from the instrument; 4. The controller operation cycle is 0.01s; 5. Receive the GCU current IGCU (in A, when the range extender is generating electricity, the GCU current is positive) and voltage UGCU (in V); 6. Receive the vehicle speed signal v (km / h) from the chassis.

[0030] Through the above embodiments, by using the memorized oil-to-electricity conversion ratio and the real-time oil-to-electricity conversion ratio to calculate the remaining energy, the vehicle controller can more accurately estimate the vehicle's endurance under low battery and low fuel conditions, reducing endurance anxiety. When in the extreme endurance mode, the controller adjusts the operating parameters of the range extender to optimize the use of fuel and electricity, improve energy efficiency, and thus reduce the risk of vehicle breakdown due to exhaustion of power or fuel, thereby improving driving safety.

[0031] Optionally, the step S101 of: obtaining the first remaining energy and the second remaining energy of the vehicle specifically includes: Step S101-1, determining the first remaining energy according to the remaining fuel amount, the remaining power amount, and the memorized fuel-to-electricity conversion ratio of the vehicle; Step S101-2, when the first remaining energy is less than the first threshold, determining the real-time oil-to-electricity conversion ratio according to the fuel injection amount signal of the vehicle, the cycle duration of the cycle, the current value of the vehicle, and the voltage value of the vehicle; Step S101-3, determining the second remaining energy according to the remaining oil amount, the remaining electricity amount, and the real-time oil-to-electricity conversion ratio.

[0032] Specifically, Figure 2 : is a flow chart of obtaining residual energy in a range control method for an extended-range vehicle provided in an embodiment of the present application, such as Figure 2 As shown, in one embodiment, the method for obtaining the first remaining energy and the second remaining energy of the vehicle has the following specific steps: First, in step S101-1, the remaining fuel SOE displayed on the vehicle's instrument and the remaining power Fuel issued by the vehicle's BMS are obtained, and the first remaining energy is determined according to the remaining fuel, the remaining power and the memorized fuel-to-electricity conversion ratio, thereby using the existing data to estimate the current remaining energy state of the vehicle.

[0033] Further, in step S101-2, when the first remaining energy is less than the preset first threshold, it means that the remaining energy of the vehicle may not be sufficient to support normal driving, and recalculation is required to obtain a more accurate remaining energy estimate. Therefore, it is necessary to further obtain detailed information about the vehicle, such as: determining the real-time oil-to-electricity conversion ratio based on the vehicle's fuel injection quantity signal, the cycle duration of the cycle, the vehicle's current value and voltage value. The fuel injection quantity signal reflects the fuel consumption of the engine, the cycle duration refers to the time length of the above cycle, and the current value and voltage value reflect the working status of the battery. These parameters jointly determine the vehicle's oil-to-electricity conversion efficiency at the current moment, that is, the real-time oil-to-electricity conversion ratio.

[0034] Further, in step S101-3, the second remaining energy is determined based on the remaining fuel, remaining power and real-time oil-to-electricity conversion ratio of the vehicle. This step is to more accurately estimate the remaining energy of the vehicle through the real-time updated oil-to-electricity conversion ratio based on the first remaining energy. Such dynamic adjustment helps to more accurately predict the vehicle's endurance in the future.

[0035] Furthermore, after the real-time oil-to-electricity conversion ratio is determined, the value of the memorized oil-to-electricity conversion ratio needs to be updated by the determined real-time oil-to-electricity conversion ratio, so as to more accurately calculate the remaining power in the next cycle.

[0036] By way of example, the process of calculating the first remaining energy and the second remaining energy and determining the threshold value is as follows.

[0037] The calculation formulas for the first residual energy and the second residual energy are as follows: First residual energy = SOE + Fuel * η memory; The second remaining energy = SOE + Fuel * η; First, a first integral module is set to calculate a memory oil-to-electricity conversion ratio (η memory ) and a second integral module is set to calculate a real-time oil-to-electricity conversion ratio (η ).

[0038] The first integral module is x1=∑(k*T), which means that every time the controller runs one cycle, x1 increases cumulatively by k*T. The integral condition of the first integral module is that the first residual energy ≤ the first threshold value, and the reset condition of the first integral module is that the first residual energy > the first threshold value, wherein k is the injection quantity signal (L / s), and T is the cycle of the controller operation, such as 0.01s.

[0039] The second integration module is x2=Σ[IGCU*UGCU] / 3.6*10^8, which means that every time the controller runs one cycle, x1 increases cumulatively by k*T. The integration condition of the second integration module is that the first residual energy ≤ the first threshold, and the reset condition of the second integration module is that the first residual energy > the first threshold, where IGCU is the current value emitted by the vehicle GCU, in A, and UGCU is the voltage value emitted by the vehicle GCU, in V.

[0040] The real-time oil-to-electricity conversion ratio η=x2 / x1 represents the ratio of 1L of oil to equivalent electricity in a driving scenario with low remaining energy.

[0041] When the first integration module and the second integration module have never been integrated, the initial value of η memory is the default oil-to-electricity conversion ratio, such as 3.1; When the first integration module and the second integration module meet the integration condition, ηmemory=η; When both the first integration module and the second integration module do not meet the integration condition and both the first integration module and the second integration module have integrated too much, η memory is equal to η before the integration of the first integration module and the second integration module is reset.

[0042] For example, suppose the user is driving an extended-range electric vehicle, and the current power and fuel levels are low. The controller will calculate the first remaining energy and the second remaining energy based on the user's vehicle real-time information (such as 5 liters of remaining fuel and 15kWh of remaining power) and the memorized oil-to-electricity conversion ratio (assuming 3.1kWh / L). If the first remaining energy is lower than the preset first threshold (such as 10kWh), the second remaining energy is further calculated. When the second remaining energy is lower than the second threshold (such as 5kWh), the controller will determine that the vehicle currently needs to turn on the extreme endurance mode. The user can be prompted to turn on the extreme endurance mode through the instrument and the large screen, and the extreme endurance mode control strategy will be executed after the user turns it on; in this mode, the controller can optimize the work of the range extender, such as increasing the power generation at low speeds to consume the remaining fuel as quickly as possible, while displaying the vehicle's bottom fuel driving range and remaining range to help users better plan their trips.

[0043] Through the above embodiment, the vehicle's operating status and oil-to-electricity conversion efficiency are monitored in real time, and the estimation of the vehicle's remaining energy is dynamically adjusted. This method helps to improve the vehicle's energy utilization efficiency, optimize energy management, and provide the driver with more accurate remaining endurance information.

[0044] Optionally, in step S103, the vehicle is controlled to travel at a certain speed according to the extreme cruising mode, wherein the extreme cruising mode is to control the vehicle to travel at a certain speed with the fuel consumption of the vehicle as the goal, including: Step S103-1, determining whether the remaining fuel volume is greater than 0; Step S103-2, when the remaining fuel amount displayed on the instrument of the vehicle is greater than 0, and the fuel rail pressure of the vehicle is greater than 0, controlling the range extender of the vehicle to start; Step S103-3: when the remaining fuel amount displayed on the instrument of the vehicle is 0, the range extender is controlled to shut down.

[0045] Specifically, Figure 3 : is a flow chart of performing range control in a range control method for an extended-range vehicle provided in an embodiment of the present application, such as Figure 3 As shown, in one embodiment, the specific steps of controlling the vehicle's cruising range in the extreme cruising range mode are as follows: First, in step S103-1, the controller checks whether the remaining fuel displayed on the vehicle instrument is greater than 0, and also checks whether the fuel rail pressure of the vehicle is greater than 0. These two conditions are key factors in determining whether the vehicle can normally use fuel to generate electricity.

[0046] Further, in step S103-2, when both of the above conditions are met, that is, the remaining fuel of the vehicle is not 0 and the fuel rail pressure is normal, the controller will control the vehicle's range extender to start. The range extender is an auxiliary power device that can continuously generate electricity for the vehicle during driving. The purpose of this step is to ensure that the vehicle can continue to generate electricity through the range extender when there is enough fuel, thereby extending the vehicle's cruising range.

[0047] Further, in step S103-3, when the remaining fuel displayed on the vehicle's instrument is 0, it means that the vehicle has no remaining fuel, and at this time, the controller will control the range extender to shut down. This is because the range extender cannot continue to generate electricity without fuel, and continued operation may cause equipment damage or other safety issues.

[0048] Through the above embodiment, it is possible to ensure that when the vehicle has sufficient fuel, the range extender continues to generate electricity to improve the vehicle's endurance. At the same time, when the vehicle runs out of fuel, the range extender is stopped in time to avoid unnecessary energy waste and potential safety risks. This method helps to optimize the vehicle's energy management, improve energy utilization efficiency, and ensure the safe operation of the vehicle. Optionally, after the range extender of the vehicle is started, the method further comprises: Acquiring the vehicle speed of the vehicle, and determining the target power generation according to the vehicle speed and a target mapping relationship, wherein the target mapping relationship is used to indicate a mapping relationship between the vehicle speed and the power generation; The range extender of the vehicle is controlled to generate electricity according to the target generated power.

[0049] Specifically, in one embodiment, the specific steps of the vehicle performing continuous power generation in the extreme endurance mode are as follows: First, the controller will obtain the vehicle speed in real time, compare the obtained speed with the target mapping relationship between the speed and the power generation power, determine the target power generation power corresponding to the vehicle speed, and control the vehicle's range extender to generate electricity according to the determined target power generation power.

[0050] Among them, the target mapping relationship represents the mapping relationship between the vehicle speed and the power generation in the extreme endurance mode. In the target mapping relationship, the power generation corresponding to the vehicle speed in the original mapping relationship in the non-extreme endurance mode is adjusted. Among them, the adjustment amount of the power generation corresponding to the vehicle speed in the non-extreme endurance mode is the power generation value that can be increased on the premise that the NVH (noise, vibration and roughness) threshold is met during the vehicle driving process. The NVH threshold refers to the limit value set for noise, vibration and roughness in order to ensure the comfort of passengers and the safety of the vehicle during driving. The power generation in the target mapping relationship obtained is: the power generation of the vehicle at different speeds on the premise of meeting the NVH threshold.

[0051] Among them, the correspondence between the power generation power and the vehicle speed in the original mapping relationship in the non-limit endurance mode is shown in Table 1. The non-limit endurance mode means that the vehicle's power generation power is based on the vehicle's driving resistance to meet the vehicle's power requirements, maintain the battery power stable, and make the range extender work on the optimal fuel economy curve.

[0052] Table 1

[0053] According to the contents of Table 1, at a relatively low vehicle speed (less than 20 km / h), which is referred to as the first vehicle speed threshold in the following text, in order to ensure the stability of the battery power and fuel economy, the vehicle's power generation power is 0, and power generation only starts after the vehicle speed exceeds the first vehicle speed threshold.

[0054] According to the above adjustment amount, the corresponding relationship between the power generation and the vehicle speed in the target mapping relationship under the extreme endurance mode obtained after adjusting the original mapping relationship is shown in Table 2. Under the extreme endurance mode, the power generation can be determined according to the vehicle speed with the goal of consuming fuel as quickly as possible.

[0055] Table 2

[0056] Specifically, in the original mapping relationship, the controller adopts different power generation strategies according to the vehicle speed: When the vehicle speed is less than the first vehicle speed threshold (i.e., at a relatively low vehicle speed), the controller generates electricity with the vehicle's power generation being the first power generation (10KWH in Table 2, indicating a relatively low power generation, but not 0). This means that at relatively low vehicle speeds, the controller will still use the power generation to generate electricity. Compared with the control of the power generation being 0 when the vehicle speed is lower than the first vehicle speed threshold in the non-limited cruising mode, this embodiment can generate electricity at low speeds and at rest in the limit cruising mode, consuming fuel to increase pure electric cruising range and reduce the user's cruising range anxiety.

[0057] When the vehicle speed is not less than the first speed threshold, the controller generates electricity according to the correspondence between the adjusted power generation and the vehicle in the target mapping relationship. This means that after the vehicle speed exceeds the first speed threshold, at the same speed, the controller uses a higher power generation than in the non-limited endurance mode to generate electricity, speeding up the fuel consumption rate and rapidly increasing the pure electric endurance during power generation.

[0058] Through the above embodiments, the power generation efficiency can be optimized according to the vehicle speed and NVH threshold. This method helps to ensure the driving comfort and safety of the vehicle while realizing the rapid use of the base oil, converting the unknown base oil into known pure electric endurance, improving energy utilization efficiency, and extending the vehicle's endurance mileage.

[0059] Optionally, in step S102: after determining to turn on the extreme endurance mode for the vehicle, the method further includes: determining a base oil level of the vehicle; According to the real-time oil-to-electricity conversion ratio, converting the bottom oil amount into a first equivalent amount of electricity; According to the corresponding relationship between the power and the cruising range of the vehicle, the driving cruising range corresponding to the first equivalent power is determined, and the driving cruising range is displayed.

[0060] Specifically, in one embodiment, after turning on the vehicle's extreme endurance mode, it is also necessary to determine the driving endurance corresponding to the vehicle's bottom fuel level and display the driving endurance. The following contents are the specific steps of this process.

[0061] First, the controller needs to determine the vehicle's current base fuel level, which is the minimum amount of fuel remaining in the vehicle's tank. This base fuel level is the last amount of fuel the vehicle can use without refueling.

[0062] Furthermore, according to the real-time oil-to-electricity conversion ratio, the controller needs to convert the bottom fuel volume into the corresponding equivalent power, which is called the first equivalent power. This process can be based on the working principle of oil-electric hybrid vehicles, that is, fuel can be converted into electrical energy for use by the vehicle's electric system. The real-time oil-to-electricity conversion ratio refers to the proportional relationship between fuel consumption and electrical energy output under the current working conditions.

[0063] Further, the controller determines the driving range corresponding to the first equivalent power obtained after the oil-to-electric conversion of the bottom fuel volume according to the corresponding relationship between the power and the driving range of the vehicle. The corresponding relationship between the power and the driving range of the vehicle is determined based on the distance that the vehicle can travel at different power levels, and this corresponding relationship can usually be obtained through data provided by the vehicle manufacturer or through actual testing.

[0064] Finally, the controller displays the driving range corresponding to the calculated bottom fuel level to the vehicle user. Driving range is very important for users because it can help users clearly understand the driving range corresponding to the bottom fuel level, so that users can better plan their trips and avoid driving interruptions caused by insufficient fuel.

[0065] Through the above embodiment, the bottom fuel level is converted into electricity using the real-time oil-to-electricity conversion ratio, and the vehicle driving range is determined accordingly. This method helps to improve the energy management efficiency of the vehicle, ensures that the user can understand the vehicle's driving range in real time, and thus make more appropriate driving decisions.

[0066] Optionally, after determining to start the extreme endurance mode for the vehicle in step S102, the method further specifically includes: determining a base oil level of the vehicle; Determine a second equivalent amount of electricity according to the real-time oil-to-electricity conversion ratio, where the second equivalent amount of electricity is: an equivalent amount of electricity corresponding to the total amount of oil between the bottom oil amount and the remaining oil amount; In each cycle, the total power between the second equivalent power and the remaining power is determined, and the remaining range corresponding to the total power is determined according to the corresponding relationship between the power and range of the vehicle, and the remaining range is displayed.

[0067] Specifically, in one embodiment, after turning on the vehicle's extreme endurance mode, it is also necessary to determine the vehicle's remaining endurance and display the remaining endurance. The following contents are the specific steps of this process.

[0068] First of all, the bottom fuel level refers to the minimum amount of fuel remaining in the vehicle's fuel tank that cannot be accurately measured by conventional measurement methods. This amount is estimated based on the vehicle's historical driving data and experience, and is used to ensure that the vehicle can continue to travel a certain distance under the condition of extreme endurance.

[0069] Therefore, it is necessary to obtain the remaining power and fuel of the vehicle first. The remaining fuel is displayed to the user through the vehicle instrument, while the remaining power is provided by the battery management system (BMS). BMS monitors the battery's voltage, current, temperature and other parameters to accurately calculate the remaining power of the battery, namely SOC (State of Charge), which is the main parameter for evaluating the range of electric vehicles.

[0070] Furthermore, the real-time oil-to-electric conversion ratio (η) is used for dynamic calculation to convert the total amount of the bottom oil and the remaining oil into oil-to-electric conversion to obtain equivalent electricity. Hereinafter, the equivalent electricity obtained after the total oil is converted into oil-to-electric conversion is referred to as the second equivalent electricity, which can reflect the electricity that can be generated per liter of fuel under the current driving conditions. This process involves the conversion of energy units, the purpose of which is to express the energy of the fuel in the form of electrical energy for unified management and scheduling.

[0071] Furthermore, in each cycle, the controller will calculate the remaining range corresponding to the total power between the second equivalent power and the remaining power issued by the BMS based on the corresponding relationship between the vehicle's power and range. In this process, the actual energy consumption of the vehicle during real-time driving is taken into account, including driving energy consumption and non-driving energy consumption (such as air conditioning, electronic equipment, etc.). The calculated remaining range will be displayed to the user so that the user can better plan the journey and use energy.

[0072] For example, suppose the base oil volume of a range-extended electric vehicle is 2 liters, the remaining oil volume is 6 liters, and the remaining power displayed by the BMS is 20kWh. If the real-time oil-to-electricity conversion ratio is 3.5kWh / L, the controller will convert 8 liters of oil (2 liters of base oil + 6 liters of remaining oil) into a second equivalent power of 28kWh (8 liters * 3.5kWh / L). Then, the controller will combine the total power between the second equivalent power of 28kWh and the remaining power of 20kWh, and calculate the remaining range corresponding to the total power according to the actual energy consumption and driving conditions of the vehicle. Assuming the calculation result is 300 kilometers, the value of 300 kilometers will be displayed on the vehicle's dashboard for user reference.

[0073] Through the above embodiments, using the bottom fuel level and the real-time oil-to-electricity conversion ratio, the controller can more accurately estimate the remaining range of the vehicle, reduce the user's range anxiety, and enable the vehicle to dynamically adjust the use of energy according to real-time data, improve energy efficiency, and extend the vehicle's range. At the same time, accurate remaining range information reduces the risk caused by energy exhaustion and enhances driving safety. Users can better plan their trips based on accurate remaining energy information, reduce the inconvenience caused by energy exhaustion, and improve the driving experience.

[0074] Optionally, determining the bottom oil amount of the vehicle includes: Acquire a plurality of base oil usages recorded in a plurality of historical driving conditions of the vehicle; determining the maximum base oil usage value among the plurality of base oil usage amounts as the base oil amount of the vehicle; The base oil usage is determined according to the fuel injection amount signal of the vehicle and the cycle duration of the cycle when the remaining oil amount is 0 and the fuel rail pressure of the vehicle is greater than 0.

[0075] Specifically, the base oil level refers to the minimum amount of oil remaining in the vehicle's fuel tank that cannot be accurately measured by conventional measurement means. Therefore, the base oil level needs to be predicted in real time based on historical base oil usage. In one embodiment, the base oil level can be obtained through the following steps.

[0076] First, the controller extracts multiple bottom fuel usages from the vehicle's historical driving data. These bottom fuel usages are collected when the vehicle instrument shows that the remaining fuel is 0, but the fuel rail pressure is still greater than 0, which is used to indicate that the vehicle's actual uncounted fuel (bottom fuel) can continue to be used.

[0077] Furthermore, among the multiple bottom fuel usages obtained, the controller will select the largest value as the predicted bottom fuel amount of the vehicle. This value represents the maximum amount of fuel that the vehicle can still use when the instrument shows that the fuel amount is 0 under all historical driving conditions. This maximum bottom fuel usage is the value closest to the bottom fuel amount. Therefore, this maximum bottom fuel usage can provide a reference value of the bottom fuel amount for the vehicle's endurance under extreme conditions. In addition, the bottom fuel amount will change with the update of the bottom fuel usage of the vehicle. When the bottom fuel usage is larger than the bottom fuel amount, the bottom fuel amount value is updated by the larger bottom fuel usage, so that the value closer to the actual bottom fuel amount is used as the bottom fuel amount.

[0078] The base oil usage is determined by calculation based on the vehicle's fuel injection signal and cycle duration.

[0079] The injection quantity signal (k, in L / s) indicates the amount of oil sprayed by the injector in each cycle, and the cycle length (for example 0.01 seconds) is the sampling frequency of the controller.

[0080] By multiplying the injection amount signal by the cycle length, the actual amount of fuel consumed by the vehicle during each cycle when the fuel rail pressure is greater than 0 can be calculated.

[0081] Specifically, a third integral module may be provided to realize the calculation of the base oil usage. The third integral result of the third integral module is x3=Σ(k*T), indicating that the current base oil usage increases cumulatively by k*0.01 for each cycle of the vehicle controller. When the fuel rail pressure is not greater than 0, the integral process of the third integral module is terminated, thereby determining the value of the base oil usage according to the third integral result of the third integral module.

[0082] In each cycle, when it is determined that the remaining fuel amount displayed on the instrument of the vehicle is 0 and the fuel rail pressure of the vehicle is greater than 0, the third integration module is integrated, and the third integration result is obtained according to the formula x3=Σ(k*T). When it is determined that the remaining fuel amount displayed on the instrument of the vehicle is greater than 0, it means that the vehicle has been refueled, and the third integration module is reset; when the third integration module is not reset, the base fuel usage of the vehicle is determined to be the default base fuel usage; when the third integration module completes the Nth integration reset, the base fuel usage of the vehicle is determined to be the maximum value between the third integration result before the Nth integration reset and the third integration result before the N-1th integration reset; and the maximum value of the multiple base fuel usages is used as the base fuel amount of the vehicle.

[0083] For example, the bottom fuel volume is y2, and the third integral module is: x3=Σ(k*T), that is, every time the controller runs one cycle, x3 accumulates k*T, and the integral condition of the third integral module is the remaining fuel volume Fuel=0&fuel rail pressure>0, and the reset condition of the third integral module is the remaining fuel volume Fuel>0.

[0084] When the third integral module has never completed the integral reset, the default value of the vehicle's bottom fuel volume is 3; After the third integration module completes the first reset, when Fuel>0 is satisfied, MAX (1, ​​x3 before the first reset of the third integration module) is the bottom fuel volume y2 of the vehicle; After the third integration module completes the second reset, when Fuel>0 is satisfied, MAX (x3 before the second reset of the third integration module, x3 before the first reset of the fourth integration module) is the bottom fuel volume y2 of the vehicle; … After the third integration module completes the nth reset, when Fuel>0 is satisfied, MAX (x3 before the nth reset of the third integration module, x3 before the n-1th reset of the third integration module) is the bottom fuel volume y2 of the vehicle; The vehicle's base oil level is always the maximum value of the historical base oil usage. The default value is 3 and the minimum value is 1.

[0085] For the calculation of the driving range and remaining range of the bottom fuel amount, a fourth integration module can be set. The fourth integration module is: x4=Σ(v*10-5 / 3.6), where v is the speed of the vehicle, the integration condition of the fourth integration module is that the first remaining energy ≤ the first threshold, the reset condition of the fourth integration module is that the first remaining energy is greater than the first threshold, and the first remaining energy is recorded at the beginning of the integration = y1.

[0086] The driving range corresponding to the bottom fuel level is: MAX((y2-x3),0)*x4*η / (y1-SOE-Fuel*η); The remaining battery life is: MAX((SOE+(MAX((y2-x3), 0)+Fuel)*η)*x4 / (y1-SOE-Fuel*η), 0).

[0087] After determining the driving range and remaining range, the driving range and remaining range are displayed using instruments and a large screen through human-computer interaction.

[0088] Through the above embodiment, the maximum historical bottom fuel usage is taken into account, so that the controller can more accurately estimate the vehicle's endurance under extreme conditions, reducing the user's endurance anxiety. In addition, the controller can dynamically adjust the use of energy according to historical data, improve energy efficiency, and extend the vehicle's endurance. At the same time, accurate bottom fuel information reduces the risks caused by energy exhaustion and enhances driving safety, allowing users to better plan their trips based on accurate bottom fuel information, reduce the inconvenience caused by energy exhaustion, and improve the driving experience.

[0089] Through the technical solution of the present application, the vehicle's range can be extended while the user can be informed of the vehicle's maximum range: by controlling the start of the range extender, the remaining fuel level and the bottom fuel level are converted into electrical power for more accurate range calculation; and combined with the vehicle's driving characteristics when energy is low, the precise bottom fuel level, oil-to-electricity conversion rate and range are calculated, reducing the user's range anxiety and improving driving safety.

[0090] Based on the same inventive concept, another embodiment of the present application further provides a range control device for an extended-range vehicle. Figure 4 is a schematic diagram of a framework of a range control device for an extended-range vehicle provided in one embodiment of the present application, such as Figure 4 As shown, the device comprises: The acquisition module 11 is used to acquire a first residual energy and a second residual energy of the vehicle in each cycle, wherein the first residual energy is determined based on the vehicle real-time information and the memorized oil-to-electricity conversion ratio, and the second residual energy is determined based on the vehicle real-time information and the real-time oil-to-electricity conversion ratio; A determination module 12, configured to determine to enable a limit endurance mode for the vehicle when the first remaining energy is less than a first threshold and the second remaining energy is less than a second threshold; The control module 13 is used to control the cruising range of the vehicle according to the extreme cruising range mode, and the extreme cruising range mode is: controlling the cruising range of the vehicle with the consumption of fuel of the vehicle as the goal.

[0091] Optionally, the acquisition module 11 includes: A first remaining energy determination unit, configured to determine the first remaining energy according to the remaining fuel amount and the remaining power amount of the vehicle, and the memorized fuel-to-electricity conversion ratio; a real-time oil-to-electricity conversion ratio determination unit, configured to determine the real-time oil-to-electricity conversion ratio according to the fuel injection amount signal of the vehicle, the cycle duration of the cycle, the current value of the vehicle, and the voltage value of the vehicle when the first residual energy is less than the first threshold value; The second remaining energy determination unit is used to determine the second remaining energy according to the remaining oil amount, the remaining electricity amount, and the real-time oil-to-electricity conversion ratio.

[0092] Optionally, the control module 13 includes: A power generation control unit, used for controlling the start of the range extender of the vehicle when the remaining fuel amount displayed on the instrument of the vehicle is greater than 0 and the fuel rail pressure of the vehicle is greater than 0; A shutdown control unit is used to control the range extender to shut down when the remaining fuel volume displayed on the instrument of the vehicle is 0.

[0093] Optionally, the power generation control unit comprises: an adjustment unit, configured to obtain a vehicle speed of the vehicle, and determine a target power generation according to the vehicle speed and a target mapping relationship, wherein the target mapping relationship is used to indicate a mapping relationship between the vehicle speed and the power generation; A power generation unit, used to control the range extender of the vehicle to generate power according to the target power generation Optionally, the device further comprises: A bottom fuel level determination module, used to determine the bottom fuel level of the vehicle after determining to turn on the extreme endurance mode for the vehicle; A bottom oil quantity conversion module, used for converting the bottom oil quantity into a first equivalent electric quantity according to the real-time oil-to-electricity conversion ratio; The driving range determination module is used to determine the driving range corresponding to the first equivalent power according to the corresponding relationship between the power and range of the vehicle, and display the driving range.

[0094] Optionally, the device further comprises: A bottom fuel level determination module, after determining to start the extreme cruising range mode for the vehicle, determines the bottom fuel level of the vehicle; a conversion module, configured to determine a second equivalent electric quantity according to the real-time oil-to-electricity conversion ratio, wherein the second equivalent electric quantity is: an equivalent electric quantity corresponding to a total oil quantity between the bottom oil quantity and the remaining oil quantity; The remaining battery life determination module is used to determine the total power between the second equivalent power and the remaining power in each cycle, determine the remaining battery life corresponding to the total power according to the corresponding relationship between the power and battery life of the vehicle, and display the remaining battery life.

[0095] Optionally, the base oil quantity determination module includes: A base oil usage acquisition unit, used to acquire a plurality of base oil usages recorded in a plurality of historical driving conditions of the vehicle; a base oil usage amount determining unit, configured to determine a maximum base oil usage amount among the plurality of base oil usage amounts as the base oil amount of the vehicle; The base oil usage is determined according to the fuel injection amount signal of the vehicle and the cycle duration of the cycle when the remaining oil amount is 0 and the fuel rail pressure of the vehicle is greater than 0.

[0096] Based on the same inventive concept, another embodiment of the present application also provides an electronic device, including a memory, a processor, and a computer program stored in the memory, wherein the processor executes the computer program to implement the range control method of the extended-range vehicle as described in any of the above embodiments.

[0097] Among them, electronic equipment refers to Figure 5 , Figure 5 is a schematic diagram of an electronic device provided by an embodiment of the present application. Figure 5 As shown, the electronic device 300 includes: a memory 310 and a processor 320. The memory 310 and the processor 320 are connected via a bus communication. A computer program is stored in the memory 310. The computer program can be run on the processor 320 to implement the steps in the range control method of the extended-range vehicle disclosed in the above embodiment of the present application.

[0098] Based on the same inventive concept, another embodiment of the present application further provides a computer program product, including a computer program, which is executed by a processor as the range control method for an extended-range vehicle as described in any of the above embodiments.

[0099] Based on the same inventive concept, another embodiment of the present application further provides a computer-readable storage medium on which a computer program is stored, wherein when the program is executed by a processor, the range control method of an extended-range vehicle as described in any of the above embodiments is implemented.

[0100] As for the device, since it is basically similar to the method embodiment, the description is relatively simple, and the relevant parts can be referred to the partial description of the method embodiment.

[0101] The various embodiments in this specification are described in a progressive manner, and each embodiment focuses on the differences from other embodiments. The same or similar parts between the various embodiments can be referenced to each other.

[0102] Those skilled in the art will appreciate that the embodiments of the present application can be provided as methods, devices, or computer program products. Therefore, the present application can adopt the form of a complete hardware embodiment, a complete software embodiment, or an embodiment in combination with software and hardware. Moreover, the present application can adopt the form of a computer program product implemented on one or more computer-usable storage media (including but not limited to disk storage, CD-ROM, optical storage, etc.) containing computer-usable program code.

[0103] The embodiments of the present application are described with reference to the flowcharts and / or block diagrams of the methods, terminal devices (systems), and computer program products according to the embodiments of the present application. It should be understood that each process and / or box in the flowchart and / or block diagram, as well as the combination of the processes and / or boxes in the flowchart and / or block diagram, can be implemented by computer program instructions. These computer program instructions can be provided to a processor of a general-purpose computer, a special-purpose computer, an embedded processor, or other programmable data processing terminal device to generate a machine, so that the instructions executed by the processor of the computer or other programmable data processing terminal device generate instructions for implementing the processes in the flowchart and / or block diagram. Figure 1 A process or multiple processes and / or boxes Figure 1 A device that provides the functions specified in a block or multiple blocks.

[0104] These computer program instructions may also be stored in a computer-readable memory capable of directing a computer or other programmable data processing terminal device to operate in a specific manner, so that the instructions stored in the computer-readable memory produce a manufactured product including an instruction device, which implements the process Figure 1 A process or multiple processes and / or boxes Figure 1 A function specified in one or more boxes.

[0105] These computer program instructions can also be loaded onto a computer or other programmable data processing terminal device so that a series of operating steps are executed on the computer or other programmable terminal device to produce a computer-implemented process, thereby providing instructions for executing on the computer or other programmable terminal device to implement the process. Figure 1 A process or multiple processes and / or boxes Figure 1 The steps for the functions specified in one or more boxes.

[0106] Although the preferred embodiments of the present application have been described, those skilled in the art may make additional changes and modifications to these embodiments once they have learned the basic creative concept. Therefore, the appended claims are intended to be interpreted as including the preferred embodiments and all changes and modifications that fall within the scope of the embodiments of the present application.

[0107] Finally, it should be noted that, in this article, relational terms such as first and second, etc. are only used to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Moreover, the terms "include", "comprise" or any other variants thereof are intended to cover non-exclusive inclusion, so that a process, method, article or terminal device including a series of elements includes not only those elements, but also other elements not explicitly listed, or also includes elements inherent to such process, method, article or terminal device. In the absence of further restrictions, the elements defined by the sentence "comprise a ..." do not exclude the existence of other identical elements in the process, method, article or terminal device including the elements.

[0108] The above is a detailed introduction to the range control method, device, equipment and medium for an extended-range vehicle provided by the present application. Specific examples are used in this article to illustrate the principles and implementation methods of the present application. The description of the above embodiments is only used to help understand the method of the present application and its core idea; at the same time, for general technical personnel in this field, according to the idea of ​​the present application, there will be changes in the specific implementation method and application scope. In summary, the content of this specification should not be understood as a limitation on the present application.

Claims

1. A range control method for an extended-range vehicle, characterized in that: The method comprises: In each cycle, a first remaining energy and a second remaining energy of the vehicle are obtained, wherein the first remaining energy is determined based on vehicle real-time information of the vehicle and a memorized oil-to-electricity conversion ratio, and the second remaining energy is determined based on vehicle real-time information of the vehicle and a real-time oil-to-electricity conversion ratio; When the first remaining energy is less than a first threshold and the second remaining energy is less than a second threshold, determining to activate the extreme endurance mode for the vehicle; The vehicle's cruising range is controlled according to the extreme cruising range mode, and the extreme cruising range mode is: the vehicle's cruising range is controlled with the consumption of the vehicle's fuel as the goal.

2. The range control method for an extended-range vehicle according to claim 1, characterized in that: The obtaining of the first remaining energy and the second remaining energy of the vehicle comprises: Determining the first remaining energy according to the remaining fuel amount and the remaining power amount of the vehicle, and the memorized fuel-to-electricity conversion ratio; When the first remaining energy is less than the first threshold, determining the real-time oil-to-electricity conversion ratio according to the fuel injection amount signal of the vehicle, the cycle duration of the cycle, the current value of the vehicle, and the voltage value of the vehicle; The second remaining energy is determined according to the remaining oil amount, the remaining electricity amount, and the real-time oil-to-electricity conversion ratio.

3. The range control method for an extended-range vehicle according to claim 1, characterized in that: The vehicle is controlled to travel at a certain speed according to the extreme cruising mode, wherein the extreme cruising mode is to control the vehicle to travel at a certain speed with the consumption of fuel of the vehicle as the goal, including: When the remaining fuel amount displayed on the instrument of the vehicle is greater than 0, and the fuel rail pressure of the vehicle is greater than 0, controlling the range extender of the vehicle to start; When the remaining fuel amount displayed on the instrument of the vehicle is 0, the range extender is controlled to shut down.

4. The range control method for an extended-range vehicle according to claim 3, characterized in that: After the range extender of the vehicle is started, the method further comprises: Acquiring the vehicle speed of the vehicle, and determining the target power generation according to the vehicle speed and a target mapping relationship, wherein the target mapping relationship is used to indicate a mapping relationship between the vehicle speed and the power generation; The range extender of the vehicle is controlled to generate electricity according to the target generated power.

5. The range control method for an extended-range vehicle according to claim 2, characterized in that: After determining to start the extreme endurance mode for the vehicle, the method further includes: determining a base oil level of the vehicle; According to the real-time oil-to-electricity conversion ratio, converting the bottom oil amount into a first equivalent amount of electricity; According to the corresponding relationship between the power and the cruising range of the vehicle, the driving cruising range corresponding to the first equivalent power is determined, and the driving cruising range is displayed.

6. The range control method for an extended-range vehicle according to claim 2, characterized in that: After determining to start the extreme endurance mode for the vehicle, the method further includes: determining a base oil level of the vehicle; Determine a second equivalent amount of electricity according to the real-time oil-to-electricity conversion ratio, where the second equivalent amount of electricity is: an equivalent amount of electricity corresponding to the total amount of oil between the bottom oil amount and the remaining oil amount; In each cycle, the total power between the second equivalent power and the remaining power is determined, and the remaining range corresponding to the total power is determined according to the corresponding relationship between the power and range of the vehicle, and the remaining range is displayed.

7. The range control method for an extended-range vehicle according to claim 5 or 6, characterized in that: Determining the bottom oil amount of the vehicle includes: Acquire a plurality of base oil usages recorded in a plurality of historical driving conditions of the vehicle; determining the maximum base oil usage value among the plurality of base oil usage amounts as the base oil amount of the vehicle; The base oil usage is determined according to the fuel injection amount signal of the vehicle and the cycle duration of the cycle when the remaining oil amount is 0 and the fuel rail pressure of the vehicle is greater than 0.

8. A cruising range control device for an extended-range vehicle, characterized in that: The device comprises: an acquisition module, configured to acquire, in each cycle, a first residual energy and a second residual energy of the vehicle, wherein the first residual energy is determined based on vehicle real-time information of the vehicle and a memorized oil-to-electricity conversion ratio, and the second residual energy is determined based on vehicle real-time information of the vehicle and a real-time oil-to-electricity conversion ratio; a determination module, configured to determine to enable a limit endurance mode for the vehicle when the first remaining energy is less than a first threshold and the second remaining energy is less than a second threshold; A control module is used to control the cruising range of the vehicle according to the extreme cruising range mode, wherein the extreme cruising range mode is to control the cruising range of the vehicle with the goal of consuming the fuel of the vehicle.

9. An electronic device, characterized in that: It comprises a memory, a processor and a computer program stored in the memory, wherein the processor executes the computer program to implement the range control method of the extended-range vehicle as described in any one of claims 1-7.

10. A computer-readable storage medium, characterized in that: A computer program is stored thereon, wherein when the computer program is executed by a processor, the range control method for an extended-range vehicle as described in any one of claims 1-7 is implemented.

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