A Method for Reducing Fuel Consumption of a Range-Extended Vehicle, a Vehicle Control Unit, and a Storage Medium

Abstract

The present application provides a method for reducing fuel consumption of a range-extended vehicle, a vehicle control unit, and a storage medium. The method is executed by the vehicle control unit and includes: when it is detected that the remaining battery capacity is lower than a preset remaining battery capacity, determining the vehicle operating conditions corresponding to the subsequent journey through navigation information; determining different estimated power generation powers of the range extender corresponding to different vehicle operating conditions, and controlling the range extender to generate electricity using the corresponding estimated power generation powers of the range extender under different vehicle operating conditions; for each vehicle operating condition, if on a flat road section or a climbing section within the corresponding vehicle operating condition, the remaining battery capacity is lower than the minimum value of the preset remaining battery capacity range up to a preset moment, determining the actual power generation power of the range extender based on the real-time cumulative power consumption, and controlling the range extender to generate electricity at the actual power generation power of the range extender within the corresponding section so that the remaining battery capacity is within the preset remaining battery capacity range.

Description

Technical Field

[0001] The present application relates to the field of automotive electronic technology, and in particular to a method for reducing fuel consumption of an extended-range vehicle, a vehicle controller, and a storage medium. Background Art

[0002] With the popularity of hybrid vehicles, the use scenarios of vehicles are becoming more and more diverse. Extended-range hybrid vehicles add a range extender to traditional fuel vehicles to enable the vehicle to increase mileage while reducing fuel consumption.

[0003] However, the fuel consumption of existing extended-range hybrid vehicles has been criticized by the market. Extended-range hybrid vehicles include various working modes (working modes include energy-saving, comfort, sports and other modes). In various working modes, it only adjusts the accelerator pedal sensitivity according to the existing mode to achieve vehicle motion state control. The power generation power of the range extender changes with the vehicle speed. Changes in the working conditions of the range extender will cause different degrees of fuel consumption loss. In addition, in the low-power mode, the mode selection cannot be used to make the range extender operate in the optimal power generation state, and the fuel consumption cannot be effectively reduced, affecting the actual user experience.

[0004] In view of this, the present invention is proposed. Summary of the invention

[0005] In view of the above-mentioned defects or deficiencies in the prior art, the present application aims to provide a method for reducing fuel consumption of an extended-range vehicle, a vehicle controller and a storage medium, which reduces vehicle fuel consumption and improves user experience while optimizing the power generation state of the range extender and ensuring efficient operation of the range extender.

[0006] In a first aspect, an embodiment of the present application provides a method for reducing fuel consumption of an extended-range vehicle, which is executed by a vehicle controller and includes:

[0007] When it is detected that the remaining battery capacity is lower than a preset remaining battery capacity, the vehicle operating conditions corresponding to the subsequent trip are determined through navigation information, each vehicle operating condition including a flat road section and / or a climbing road section;

[0008] Determining different estimated power generation powers of range extenders corresponding to different vehicle operating conditions, and controlling the range extender to generate electricity using the corresponding estimated power generation powers of the range extender under different vehicle operating conditions, so that the remaining capacity of the battery is within a preset remaining capacity range of the battery;

[0009] For each vehicle operating condition, if, in a flat road section or a climbing section within the corresponding vehicle operating condition, the remaining battery capacity is lower than the minimum value of the preset battery remaining capacity range as of a preset time, the actual power generation power of the range extender is determined based on the real-time accumulated power consumption, and the range extender is controlled to generate electricity at the actual power generation power of the range extender within the corresponding section, so that the remaining battery capacity is within the preset battery remaining capacity range.

[0010] According to the technical solution provided in the embodiment of the present application, the determination of the estimated power generation of different range extenders corresponding to different vehicle operating conditions includes:

[0011] Determine the vehicle operating condition according to the estimated vehicle speed distribution information in the navigation information, wherein the vehicle operating condition includes an urban operating condition, a suburban operating condition, a high-speed operating condition, and an ultra-high-speed operating condition;

[0012] For each vehicle operating condition, if there is no climbing section in the corresponding vehicle operating condition, the corresponding first range extender estimated power generation power corresponding to the corresponding vehicle operating condition is determined based on the estimated average vehicle speed in the navigation information, the preset power consumption per 100 kilometers corresponding to the estimated average vehicle speed, and the estimated vehicle driving time corresponding to the estimated average vehicle speed, and the corresponding first range extender estimated power generation power is used as the corresponding range extender estimated power generation power, wherein the climbing section is a section in the navigation information where the estimated altitude continues to increase.

[0013] According to the technical solution provided in the embodiment of the present application, the determination of the estimated power generation of different range extenders corresponding to different vehicle operating conditions also includes:

[0014] For each vehicle operating condition, if there is a climbing section in the corresponding vehicle operating condition, then in the corresponding climbing section, the estimated power generation power of the corresponding second range extender is determined based on the estimated altitude distribution information in the navigation information and the estimated power generation power corresponding to each estimated altitude increment interval, and the sum of the estimated power generation power of the corresponding first range extender and the estimated power generation power of the corresponding second range extender is used as the estimated power generation power of the corresponding range extender in the corresponding climbing section.

[0015] According to the technical solution provided in the embodiment of the present application, the determination of the estimated power generation of different range extenders corresponding to different vehicle operating conditions also includes:

[0016] If there is no estimated altitude distribution information in the navigation information and there is a climbing section in the corresponding vehicle operating condition, for each vehicle operating condition, real-time atmospheric pressure information is collected based on the vehicle-mounted air pressure sensor and the vehicle-mounted angle sensor;

[0017] When a decrease in the real-time atmospheric pressure is detected, it is determined that the vehicle enters a climbing section;

[0018] In the climbing section, converting the real-time atmospheric pressure information into real-time altitude information;

[0019] The estimated power generation power of the corresponding third range extender is determined based on the real-time altitude information and the power generation power corresponding to each altitude increment interval, and the sum of the estimated power generation power of the corresponding first range extender and the estimated power generation power of the corresponding third range extender is used as the estimated power generation power of the corresponding range extender for the corresponding climbing section.

[0020] According to the technical solution provided in the embodiment of the present application, the determination of the estimated power generation of different range extenders corresponding to different vehicle operating conditions also includes:

[0021] If there is no estimated altitude distribution information in the navigation information and there is a climbing section in the corresponding vehicle operating condition, for each vehicle operating condition, real-time atmospheric pressure information is collected based on the vehicle-mounted air pressure sensor and the vehicle-mounted angle sensor;

[0022] When it is detected that the real-time atmospheric pressure decreases and the duration is greater than or equal to a first preset time, determining that the vehicle enters a continuous climbing state;

[0023] Determining average slope information based on the altitude information within the first preset time;

[0024] The estimated power generation power of the corresponding fourth range extender is determined based on the average slope information and the power generation power corresponding to each slope interval, and the sum of the estimated power generation power of the corresponding first range extender and the estimated power generation power of the corresponding fourth range extender is used as the estimated power generation power of the corresponding range extender in the subsequent continuous climbing state.

[0025] According to the technical solution provided by the embodiment of the present application, if the remaining battery capacity is lower than the minimum value of the preset remaining battery capacity range at the preset time in the flat road section or the climbing road section within the corresponding vehicle operating condition, the actual power generation power of the range extender is determined based on the real-time accumulated power consumption, including:

[0026] Determine the real-time cumulative power consumption on a flat road section or a climbing road section within the corresponding vehicle operating condition, wherein the real-time cumulative power consumption is the integral of the real-time power consumption from the initial time to the preset time, and the real-time power consumption integral is the integral of the product of the current and the voltage of the battery pack per unit time;

[0027] Determine the actual average power consumption based on the real-time accumulated power consumption and the duration from the initial moment to the preset moment;

[0028] Based on the actual average power consumption and the estimated power generation of the corresponding range extender, the actual power generation of the range extender in the subsequent corresponding vehicle operating condition is determined.

[0029] According to the technical solution provided in the embodiment of the present application, determining the vehicle operating condition according to the estimated vehicle speed distribution information in the navigation information includes:

[0030] If the estimated vehicle speed is less than the preset vehicle speed and the duration is greater than or equal to the preset time period, it is determined that the vehicle enters a slow-moving section, and the vehicle operating conditions before and after the slow-moving section are regarded as two independent vehicle operating conditions.

[0031] According to the technical solution provided in the embodiment of the present application, after determining the vehicle operating condition according to the estimated vehicle speed distribution information in the navigation information, the method further includes:

[0032] For each vehicle operating condition, within the corresponding vehicle operating condition, if it is detected that the real-time vehicle speed is less than the preset vehicle speed and the duration is greater than or equal to the preset time period, it is determined that the vehicle has entered a congested section, and the section after the congested section within the corresponding vehicle operating condition is taken as an independent vehicle operating condition;

[0033] The estimated power generation power of the range extender and the actual power generation power of the range extender corresponding to the independent vehicle operating condition are re-determined.

[0034] In a second aspect, an embodiment of the present application provides a vehicle controller, characterized in that it includes a processor and a memory; the processor is used to execute the steps of the extended-range vehicle fuel consumption reduction method as described above by calling a program or instruction stored in the memory.

[0035] In a third aspect, an embodiment of the present application provides a computer-readable storage medium, which stores a program or instruction, and the program or instruction enables a computer to execute the steps of the method for reducing fuel consumption of an extended-range vehicle as described above.

[0036] In summary, the present application proposes a method for reducing fuel consumption of an extended-range vehicle, a vehicle controller and a storage medium. The method for reducing fuel consumption of an extended-range vehicle is executed by the vehicle controller, including: when it is detected that the remaining battery capacity is lower than the preset remaining battery capacity, determining the vehicle operating condition corresponding to the subsequent trip through navigation information, each vehicle operating condition including a flat road section and / or a climbing section; determining different estimated power generation powers of range extenders corresponding to different vehicle operating conditions, and controlling the range extender to generate electricity using the corresponding estimated power generation power of the range extender under different vehicle operating conditions, so that the remaining battery capacity is within the preset battery remaining capacity range; for each vehicle operating condition, if the remaining battery capacity is lower than the minimum value of the preset battery remaining capacity range as of a preset time in a flat road section or a climbing section within the corresponding vehicle operating condition, then determining the actual power generation power of the range extender based on the real-time accumulated power consumption, and controlling the range extender to generate electricity with the actual power generation power of the range extender in the corresponding section, so that the remaining battery capacity is within the preset battery remaining capacity range. By determining the vehicle's operating conditions, based on different vehicle operating conditions, the estimated power generation power of the range extender corresponding to each vehicle operating condition is pre-determined, and real-time monitoring is performed to see whether the estimated power generation power of the range extender can maintain the remaining battery capacity within a preset range. If it is not within the preset range, the real-time cumulative power consumption within the preset time period is used to determine the actual power consumption of the range extender, thereby optimizing the power generation status of the range extender, ensuring that the range extender can operate efficiently, thereby reducing vehicle fuel consumption and improving user experience. BRIEF DESCRIPTION OF THE DRAWINGS

[0037] Figure 1 A schematic flow chart of a method for reducing fuel consumption of an extended-range vehicle provided in an embodiment of the present application;

[0038] Figure 2 A schematic diagram of the structure of a fuel consumption reduction device for a range-extended vehicle provided in an embodiment of the present application;

[0039] Figure 3 A schematic diagram of the structure of a vehicle controller provided in an embodiment of the present application. DETAILED DESCRIPTION

[0040] The present application is further described in detail below in conjunction with the accompanying drawings and embodiments. It is to be understood that the specific embodiments described herein are only used to explain the relevant invention, rather than to limit the invention. It is also necessary to explain that, for ease of description, only the parts related to the invention are shown in the accompanying drawings.

[0041] It should be noted that, in the absence of conflict, the embodiments and features in the embodiments of the present application can be combined with each other. The present application will be described in detail below with reference to the accompanying drawings and in combination with the embodiments.

[0042] As mentioned in the background technology, in response to the problems in the prior art, the present application proposes a method for reducing fuel consumption of extended-range vehicles. The present embodiment can be applied to situations where the extended-range vehicle needs to adjust the power generation power of the range extender to an optimal state to reduce fuel consumption when the battery power is low. The method can be executed by a vehicle controller, which can be implemented in software and / or hardware and can be configured in the vehicle. Figure 1 A flow chart of a method for reducing fuel consumption of an extended-range vehicle provided in an embodiment of the present application is shown in FIG. Figure 1 As shown, the method for reducing fuel consumption of an extended-range vehicle includes the following steps:

[0043] S110. When it is detected that the remaining battery capacity is lower than a preset remaining battery capacity, the vehicle operating condition corresponding to the subsequent trip is determined through navigation information, and each vehicle operating condition includes a flat road section and / or a climbing road section.

[0044] Among them, the preset battery remaining capacity can be set by the user according to actual needs, and the specific value is not specifically limited here. Preferably, the preset battery remaining capacity can be the remaining capacity of the battery pack when the vehicle enters the low-power mode. For example, when the vehicle enters the low-power mode, the remaining capacity of the battery pack can be 10% of the total capacity of the battery pack, that is, the preset battery remaining capacity can be 10%. It can be understood that the preset battery remaining capacity can also be any battery pack remaining capacity when the vehicle is in other working modes (for example, it can be energy-saving, comfort, sports, etc.), for example, it can be 15% or 20%. The navigation information in this embodiment includes the navigation route of the vehicle, route-related information, and real-time traffic information, etc. For example, the navigation information may include total mileage, total travel time, average vehicle speed, road section operating information, vehicle speed distribution information (including the maximum speed that can be driven in different sections and the average speed of different sections), congested sections, congestion duration, unobstructed sections, ambient temperature, altitude distribution information (including the altitude of different sections, altitude rising intervals and the estimated running time of the intervals, and altitude falling intervals and the estimated running time of the intervals, etc.), and other estimated information, as well as real-time traffic information during vehicle driving, etc. The subsequent journey refers to the distance from the current moment to the end of navigation, wherein the current moment refers to the moment when the remaining battery capacity is detected to be lower than the preset remaining battery capacity. The vehicle operating condition refers to the road condition of the vehicle during operation. Preferably, the vehicle operating condition may include urban conditions, suburban conditions, high-speed conditions and ultra-high-speed conditions, etc., wherein each vehicle operating condition may include flat road sections and / or climbing (or increasing altitude) sections. In addition, due to congestion during vehicle driving, the vehicle operating condition may also be a non-continuous vehicle operating condition.

[0045] Optionally, determining the vehicle operating condition corresponding to the subsequent trip through navigation information may include determining the vehicle operating condition using vehicle speed distribution information in the navigation information, and may also include determining the real-time vehicle operating condition using real-time road condition information in the navigation information, etc. Exemplarily, the preset battery remaining capacity is 10%. In this embodiment, when it is detected that the battery remaining capacity is less than 10%, the vehicle operating condition corresponding to the subsequent trip may be determined through navigation information.

[0046] S120, determining different estimated power generation powers of range extenders corresponding to different vehicle operating conditions, and controlling the range extender to generate electricity using the corresponding estimated power generation powers of the range extender under different vehicle operating conditions, so that the remaining battery capacity is within a preset remaining battery capacity range.

[0047] In this embodiment, the preset battery remaining capacity range may be any range greater than the preset battery remaining capacity. Preferably, it may be a range 10% to 15% higher than the preset battery remaining capacity. Exemplarily, the preset battery remaining capacity is 10%, and the preset battery remaining capacity range is 20% to 25%. Preferably, the estimated power generation power of the corresponding range extender corresponding to the corresponding vehicle operating condition may be determined based on the preset battery remaining capacity, the preset battery remaining capacity range, the estimated power consumption corresponding to different vehicle operating conditions, and the estimated operating time. Exemplarily, the preset battery remaining capacity is 10%, the preset battery remaining capacity range is 20% to 25%, the estimated power consumption of the flat road section of the vehicle operating condition 1 is 5%, and the estimated operating time is t 1 The estimated power consumption of the flat road section of vehicle operating condition 2 is 7%, and the estimated operating time is t 2 , then the estimated power generation of the range extender corresponding to the flat road section of vehicle operating condition 1 is 15% / t 1 ~20% / t 1 The estimated power generation of the range extender corresponding to the flat road section of vehicle operating condition 2 is 17% / t 2 ~22% / t 2 .

[0048] S130. For each vehicle operating condition, if, in a flat road section or a climbing section within the corresponding vehicle operating condition, the remaining battery capacity is lower than the minimum value of the preset remaining battery capacity range as of a preset time, the actual power generation power of the range extender is determined based on the real-time accumulated power consumption, and the range extender is controlled to generate electricity at the actual power generation power of the range extender within the corresponding section, so that the remaining battery capacity is within the preset remaining battery capacity range.

[0049] During vehicle operation, the actual power consumption may not be the same as the estimated power consumption, and the estimated power generation power of the range extender may not be able to maintain the remaining battery capacity within the preset battery remaining capacity range, resulting in the situation where the remaining battery capacity is lower than the minimum value of the preset battery remaining capacity range. Based on this, for each flat road section (if there is a flat road section) or climbing section (if there is a climbing section) in each vehicle operating condition, the remaining battery capacity can be monitored in real time. If the remaining battery capacity is lower than the minimum value of the preset battery remaining capacity range as of the preset time, it is preferred to determine the actual power generation of the range extender based on the real-time cumulative power consumption. Among them, the real-time cumulative power consumption is the cumulative power consumption power between the zero time when the vehicle starts to run on a flat road section or a climbing section of a vehicle operating condition and the preset time. Exemplarily, the preset battery remaining capacity is 10%, the preset battery remaining capacity range is 20% to 25%, the estimated power consumption of the flat road section in vehicle operating condition 1 is 5%, and the estimated running time is t 1 , the estimated power generation capacity of the range extender corresponding to the flat road section in vehicle operating condition 1 can be selected as 15% / t 1 , exemplary, t 1 The remaining battery capacity is monitored in real time on the flat road section within the vehicle operating condition 1. If the remaining battery capacity is 11＝ At 0.1h, the remaining battery capacity is 19%, which is lower than the minimum value of 20% of the preset remaining battery capacity range. Therefore, it can be determined that the estimated power generation of the range extender cannot maintain the remaining battery capacity within the preset remaining battery capacity range. At this time, the real-time cumulative power consumption within 0.1h can be determined to be 6% through the corresponding calculation method, and the actual average power consumption of the vehicle on the flat road section within the vehicle operating condition 1 is determined to be 6% / t 11 , compared to the estimated power consumption of 5% / t 1 Increase by 6% / t 11 -5% / t 1 Therefore, it can be determined that the actual power generation of the range extender needs to be increased by 6% / t compared with the estimated power generation of the range extender. 11 -5% / t 1 , that is, the actual power generation of the range extender is 15% / t 1 +6% / t 11 -5% / t 1 .

[0050] A method for reducing fuel consumption of an extended-range vehicle proposed in the present application is executed by a vehicle controller, comprising: when it is detected that the remaining battery capacity is lower than a preset remaining battery capacity, determining the vehicle operating condition corresponding to the subsequent trip through navigation information, each vehicle operating condition including a flat road section and / or a climbing road section; determining different estimated power generation powers of range extenders corresponding to different vehicle operating conditions, and controlling the range extender to generate electricity using the corresponding estimated power generation power of the range extender under different vehicle operating conditions, so that the remaining battery capacity is within a preset battery remaining capacity range; for each vehicle operating condition, if the remaining battery capacity is lower than the minimum value of the preset battery remaining capacity range as of a preset time in a flat road section or a climbing road section within the corresponding vehicle operating condition, determining the actual power generation power of the range extender based on the real-time accumulated power consumption, and controlling the range extender to generate electricity with the actual power generation power of the range extender in the corresponding section, so that the remaining battery capacity is within the preset battery remaining capacity range. By determining the vehicle's operating conditions, based on different vehicle operating conditions, the estimated power generation power of the range extender corresponding to each vehicle operating condition is pre-determined, and real-time monitoring is performed to see whether the estimated power generation power of the range extender can maintain the remaining battery capacity within a preset range. If it is not within the preset range, the real-time cumulative power consumption within the preset time period is used to determine the actual power consumption of the range extender, thereby optimizing the power generation status of the range extender, ensuring that the range extender can operate efficiently, thereby reducing vehicle fuel consumption and improving user experience.

[0051] On the basis of the above embodiments, further, determining the estimated power generation of different range extenders corresponding to different vehicle operating conditions includes:

[0052] Determine the vehicle operating condition according to the estimated vehicle speed distribution information in the navigation information, wherein the vehicle operating condition includes an urban operating condition, a suburban operating condition, a high-speed operating condition, and an ultra-high-speed operating condition;

[0053] For each vehicle operating condition, if there is no climbing section in the corresponding vehicle operating condition, the corresponding first range extender estimated power generation power corresponding to the corresponding vehicle operating condition is determined based on the estimated average vehicle speed in the navigation information, the preset power consumption per 100 kilometers corresponding to the estimated average vehicle speed, and the estimated vehicle driving time corresponding to the estimated average vehicle speed, and the corresponding first range extender estimated power generation power is used as the corresponding range extender estimated power generation power, wherein the climbing section is a section in the navigation information where the estimated altitude continues to increase.

[0054] Preferably, the estimated vehicle speed distribution information is navigation predicted vehicle speed distribution information, which may include the maximum drivable speed of different road sections and the average vehicle speed of different road sections, etc. Exemplarily, the vehicle operating condition corresponding to the road section with a speed range of V<45km / h may be determined as an urban condition, the vehicle operating condition corresponding to the road section with a speed range of 45km / h≤V<75km / h may be determined as a suburban condition, the vehicle operating condition corresponding to the road section with a speed range of 75km / h≤V<115km / h may be determined as a high-speed condition, and the vehicle operating condition corresponding to the road section with a speed range of V≥115km / h may be determined as an ultra-high-speed condition. It can be understood that the road section with the estimated continuous increase in altitude can be a continuous altitude increase section or a discontinuous altitude increase section, wherein the continuous altitude increase section refers to a section that only includes an increase in altitude, and the discontinuous altitude increase section is allowed to include a flat road, a section with a small altitude change, or a section with a decreased altitude between two sections with increased altitude (preferably, when a vehicle is traveling on a flat road, a section with a small altitude change, or a section with a decreased altitude, the driving time should not exceed the first preset time), and the altitude of this section is increased as a whole.

[0055] The preset power consumption per 100 kilometers corresponding to the estimated average vehicle speed may preferably be the constant-speed power consumption measured on the hub according to the actual road resistance. Exemplarily, it may be a test at a gradient of every 5 km / h to obtain a mapping chart of the speed gradient and the constant-speed power consumption, wherein the constant-speed power consumption may preferably be the power consumption per 100 kilometers, that is, the cumulative power consumption corresponding to driving 100 kilometers at the corresponding speed. Preferably, the estimated power consumption of the current vehicle operating condition = the preset power consumption per 100 kilometers × the corresponding estimated vehicle driving time × the corresponding estimated average vehicle speed, and the estimated power generation power of the first range extender of the current vehicle operating condition is in the range of [(preset power consumption minimum remaining capacity - preset power consumption remaining capacity + estimated power consumption) / corresponding estimated vehicle driving time] ~ [(preset power consumption maximum remaining capacity - preset power consumption remaining capacity + estimated power consumption) / corresponding estimated vehicle driving time]. For example, the preset remaining battery capacity is 10%, the preset remaining battery capacity range is 20% to 25%, there is no climbing section in vehicle operating condition 1, the estimated average vehicle speed is 40 km / h, the corresponding preset 100 km power consumption is 12 kWh / 100 km, and the corresponding estimated vehicle driving time is t 1 , then the estimated power consumption corresponding to vehicle operating condition 1 = 12kWh / 100km×40km / h×0.5h=2.4kWh, then the estimated power generation of the first range extender corresponding to vehicle operating condition 1 is (10%+2.4kWh) / t 1 ~(15%+2.4kWh) / t 1 .

[0056] On the basis of the above embodiments, further, the determining of the estimated power generation of different range extenders corresponding to different vehicle operating conditions also includes:

[0057] For each vehicle operating condition, if there is a climbing section in the corresponding vehicle operating condition, then in the corresponding climbing section, the estimated power generation power of the corresponding second range extender is determined based on the estimated altitude distribution information in the navigation information and the estimated power generation power corresponding to each estimated altitude increment interval, and the sum of the estimated power generation power of the corresponding first range extender and the estimated power generation power of the corresponding second range extender is used as the estimated power generation power of the corresponding range extender in the corresponding climbing section.

[0058] If the navigation information integrates altitude distribution information, the change in the corresponding range extender power generation caused by the increase in altitude can be determined through the altitude distribution information (i.e., the change in altitude) and the correspondence between the altitude increment information and the estimated power generation. Among them, the estimated altitude distribution information includes the estimated altitude of different sections, the estimated altitude increase interval and the estimated operating time of the interval, and the estimated altitude decrease interval and the estimated operating time of the interval, etc. The estimated power generation of the second range extender is the power generation of the range extender corresponding to the altitude increase.

[0059] Preferably, the estimated altitude increment can be determined based on the estimated altitude distribution information, and then the estimated power generation power of the second range extender can be determined based on the correspondence between the predetermined estimated altitude increment interval and the estimated power generation power, wherein the altitude increment = (altitude at time T2 - altitude at time T1) / (T2-T1). Exemplarily, the estimated power generation power range corresponding to the altitude increment interval of 100m / h to 400m / h is 0kW to 20kW. By calculation, the altitude increment corresponding to the vehicle operating condition 1 is 400m / h, and the corresponding estimated power generation power of 20kW can be used as the estimated power generation power of the second range extender. If the estimated power generation power of the first range extender corresponding to the vehicle operating condition 1 is (10% + 2.4kWh) / t 1 , then the estimated power generation of the corresponding range extender on the corresponding climbing section is (10% + 2.4kWh) / t 1+ 20kW. In addition, the altitude can also be converted into a slope, and then the estimated power generation of the second range extender can be determined based on the correspondence between the predetermined slope interval and the estimated power generation, where the slope = (altitude at the end of the climb - altitude at the start of the climb) / (mileage at the end of the climb - mileage at the start of the climb). Exemplarily, the estimated power generation range corresponding to the slope interval of 1% to 2% is 0kW to 20kW. The slope obtained by calculation is 2%, and the corresponding estimated power generation of 20kW can be used as the estimated power generation of the second range extender.

[0060] On the basis of the above embodiments, further, the determining of the estimated power generation of different range extenders corresponding to different vehicle operating conditions also includes:

[0061] If the navigation information does not contain the estimated altitude distribution information, for each vehicle operating condition, real-time atmospheric pressure information is collected based on the vehicle-mounted air pressure sensor and the vehicle-mounted angle sensor;

[0062] When a decrease in the real-time atmospheric pressure is detected, it is determined that the vehicle enters a climbing section;

[0063] In the climbing section, converting the real-time atmospheric pressure information into real-time altitude information;

[0064] The estimated power generation power of the corresponding third range extender is determined based on the real-time altitude information and the power generation power corresponding to each altitude increment interval, and the sum of the estimated power generation power of the corresponding first range extender and the estimated power generation power of the corresponding third range extender is used as the estimated power generation power of the corresponding range extender for the corresponding climbing section.

[0065] Preferably, when there is no estimated altitude distribution information in the navigation information, the real-time altitude information collected by the vehicle's own sensors can be considered to determine the estimated power generation power of the range extender. The climbing section in this embodiment refers to a continuous elevation section.

[0066] In this embodiment, when a decrease in the real-time atmospheric pressure is detected, it is determined that the vehicle has exited the climbing section.

[0067] On the basis of the above embodiments, further, the determining of the estimated power generation of different range extenders corresponding to different vehicle operating conditions also includes:

[0068] If there is no estimated altitude distribution information in the navigation information and there is a climbing section in the corresponding vehicle operating condition, for each vehicle operating condition, real-time atmospheric pressure information is collected based on the vehicle-mounted air pressure sensor and the vehicle-mounted angle sensor;

[0069] When it is detected that the real-time atmospheric pressure decreases and the duration is greater than or equal to a first preset time, determining that the vehicle enters a continuous climbing state;

[0070] Determining average slope information based on the altitude information within the first preset time;

[0071] The estimated power generation power of the corresponding fourth range extender is determined based on the average slope information and the power generation power corresponding to each slope interval, and the sum of the estimated power generation power of the corresponding first range extender and the estimated power generation power of the corresponding fourth range extender is used as the estimated power generation power of the corresponding range extender in the subsequent continuous climbing state.

[0072] The continuous climbing state in this embodiment includes a continuous state elevation section and a discontinuous state elevation section. Optionally, when it is detected that the atmospheric pressure decreases and the duration is greater than or equal to a first preset time, it is determined that the vehicle exits the continuous climbing state.

[0073] On the basis of the above embodiments, further, if in a flat road section or a climbing section within the corresponding vehicle operating condition, the remaining battery capacity is lower than the minimum value of the preset remaining battery capacity range as of the preset time, then based on the real-time accumulated power consumption, the actual power generation power of the range extender is determined, including:

[0074] Determine the real-time cumulative power consumption on a flat road section or a climbing road section within the corresponding vehicle operating condition, wherein the real-time cumulative power consumption is the integral of the real-time power consumption from the initial time to the preset time, and the real-time power consumption integral is the integral of the product of the current and the voltage of the battery pack per unit time;

[0075] Determine the actual average power consumption based on the real-time accumulated power consumption and the duration from the initial moment to the preset moment;

[0076] Based on the actual average power consumption and the estimated power generation of the corresponding range extender, the actual power generation of the range extender in the subsequent corresponding vehicle operating condition is determined.

[0077] Preferably, the actual power generation power of the range extender subsequent to the corresponding vehicle operating condition=actual average power consumption-estimated power consumption+estimated power generation power of the corresponding range extender.

[0078] For example, the preset battery remaining capacity is 10%, the preset battery remaining capacity range is 20% to 25%, the estimated power consumption of the flat road section in the vehicle operating condition 1 is 5%, and the estimated operating time is t 1 , the estimated power generation capacity of the range extender corresponding to the flat road section in vehicle operating condition 1 can be selected as 15% / t 1 , exemplary, t 1 The remaining battery capacity is monitored in real time on the flat road section within the vehicle operating condition 1. If the remaining battery capacity is 11＝ At 0.1h, the remaining battery capacity is 19%, which is lower than the minimum value of 20% of the preset remaining battery capacity range. Therefore, it can be determined that the estimated power generation of the range extender cannot maintain the remaining battery capacity within the preset remaining battery capacity range. The above method is used to calculate that the real-time cumulative power consumption within 0.1h is 6%, and the actual average power consumption of the vehicle on the flat road section within the vehicle operating condition 1 is 6% / t. 11 , compared to the estimated power consumption of 5% / t 1 Increase by 6% / t 11 -5% / t 1Therefore, it can be determined that the actual power generation of the range extender needs to be increased by 6% / t compared with the estimated power generation of the range extender. 11 -5% / t 1 , that is, the actual power generation of the range extender is 15% / t 1 +6% / t 11 -5% / t 1 .

[0079] On the basis of the above embodiments, further, determining the vehicle operating condition according to the estimated vehicle speed distribution information in the navigation information includes:

[0080] If the estimated vehicle speed is less than the preset vehicle speed and the duration is greater than or equal to the preset time period, it is determined that the vehicle enters a slow-moving section, and the vehicle operating conditions before and after the slow-moving section are regarded as two independent vehicle operating conditions.

[0081] Preferably, the preset vehicle speed is 15km / h, and the preset time period is 60s. Exemplarily, if the estimated vehicle speed distribution of the vehicle's subsequent journey is determined by navigation information to be V<45km / h, it can be determined that the vehicle's subsequent journey is in urban conditions. If there is no slow-moving section in the vehicle's subsequent journey, it can be determined that the vehicle's operating condition in the vehicle's subsequent journey is one. If there is a slow-moving section in the vehicle's subsequent journey that divides the vehicle's subsequent journey into two sections, it can be determined that the vehicle's operating conditions in the vehicle's subsequent journey are two. It can be understood that the range extender power generation corresponding to the vehicle in the slow-moving section is the range extender power generation corresponding to the adjacent previous vehicle operating condition.

[0082] On the basis of the above embodiments, further, after determining the vehicle operating condition according to the estimated vehicle speed distribution information in the navigation information, the method further includes:

[0083] For each vehicle operating condition, within the corresponding vehicle operating condition, if it is detected that the real-time vehicle speed is less than the preset vehicle speed and the duration is greater than or equal to the preset time period, it is determined that the vehicle has entered a congested section, and the section after the congested section within the corresponding vehicle operating condition is taken as an independent vehicle operating condition;

[0084] The estimated power generation power of the range extender and the actual power generation power of the range extender corresponding to the independent vehicle operating condition are re-determined.

[0085] During real-time vehicle driving, within a vehicle operating condition determined by navigation information, there may be a congested section caused by an emergency, and the congested section divides the vehicle operating condition into two sections. Therefore, it is preferred to treat the section after the congested section in the vehicle operating condition as an independent vehicle operating condition.

[0086] Figure 2This is a schematic diagram of the structure of a fuel consumption reduction device for a range-extended vehicle provided in an embodiment of the present application. The device is arranged in a vehicle controller, such as Figure 2 As shown, the device comprises:

[0087] The vehicle operating condition determination module 210 is used to determine the vehicle operating condition corresponding to the subsequent trip through navigation information when it is detected that the remaining battery capacity is lower than a preset remaining battery capacity, each vehicle operating condition including a flat road section and / or a climbing road section;

[0088] The estimated power generation determination module 220 is used to determine the estimated power generation powers of different range extenders corresponding to different vehicle operating conditions, and control the range extender to generate power using the corresponding estimated power generation powers of the range extender under different vehicle operating conditions, so that the remaining capacity of the battery is within a preset remaining capacity range of the battery;

[0089] The actual power generation determination module 230 is used to determine the actual power generation power of the range extender based on the real-time accumulated power consumption for each vehicle operating condition, and control the range extender to generate power with the actual power generation power of the range extender in the corresponding section, if the remaining battery capacity is lower than the minimum value of the preset remaining battery capacity range at a preset time in a flat road section or a climbing section within the corresponding vehicle operating condition, so that the remaining battery capacity is within the preset remaining battery capacity range.

[0090] The present application proposes a fuel consumption reduction device for an extended-range vehicle, which is arranged in a vehicle controller and includes: a vehicle operating condition determination module for determining the vehicle operating condition corresponding to the subsequent trip through navigation information when it is detected that the remaining battery capacity is lower than a preset remaining battery capacity; an estimated power generation determination module for determining different estimated power generation powers of range extenders corresponding to different vehicle operating conditions, and controlling the range extender to generate power using the corresponding estimated power generation power of the range extender under different vehicle operating conditions, so that the remaining battery capacity is within a preset battery remaining capacity range; an actual power generation determination module for determining the actual power generation power of the range extender based on real-time accumulated power consumption for each vehicle operating condition, if the remaining battery capacity is lower than the minimum value of the preset battery remaining capacity range as of a preset time in a flat road section or a climbing section within the corresponding vehicle operating condition, and controlling the range extender to generate power with the actual power generation power of the range extender within the corresponding section, so that the remaining battery capacity is within the preset battery remaining capacity range. By determining the vehicle's operating conditions, based on different vehicle operating conditions, the estimated power generation power of the range extender corresponding to each vehicle operating condition is pre-determined, and real-time monitoring is performed to see whether the estimated power generation power of the range extender can maintain the remaining battery capacity within a preset range. If it is not within the preset range, the real-time cumulative power consumption within the preset time period is used to determine the actual power consumption of the range extender, thereby optimizing the power generation status of the range extender, ensuring that the range extender can operate efficiently, thereby reducing vehicle fuel consumption and improving user experience.

[0091] On the basis of the above technical solutions, further, the estimated power generation determination module 220 may include:

[0092] Determine the vehicle operating condition according to the estimated vehicle speed distribution information in the navigation information, wherein the vehicle operating condition includes an urban operating condition, a suburban operating condition, a high-speed operating condition, and an ultra-high-speed operating condition;

[0093] For each vehicle operating condition, if there is no climbing section in the corresponding vehicle operating condition, the corresponding first range extender estimated power generation power corresponding to the corresponding vehicle operating condition is determined based on the estimated average vehicle speed in the navigation information, the preset power consumption per 100 kilometers corresponding to the estimated average vehicle speed, and the estimated vehicle driving time corresponding to the estimated average vehicle speed, and the corresponding first range extender estimated power generation power is used as the corresponding range extender estimated power generation power, wherein the climbing section is a section in the navigation information where the estimated altitude continues to increase.

[0094] On the basis of the above technical solutions, further, the estimated power generation determination module 220 may also include:

[0095] For each vehicle operating condition, if there is a climbing section in the corresponding vehicle operating condition, then in the corresponding climbing section, the estimated power generation power of the corresponding second range extender is determined based on the estimated altitude distribution information in the navigation information and the estimated power generation power corresponding to each estimated altitude increment interval, and the sum of the estimated power generation power of the corresponding first range extender and the estimated power generation power of the corresponding second range extender is used as the estimated power generation power of the corresponding range extender in the corresponding climbing section.

[0096] On the basis of the above technical solutions, further, the estimated power generation determination module 220 may also include:

[0097] If there is no estimated altitude distribution information in the navigation information and there is a climbing section in the corresponding vehicle operating condition, for each vehicle operating condition, real-time atmospheric pressure information is collected based on the vehicle-mounted air pressure sensor and the vehicle-mounted angle sensor;

[0098] When a decrease in the real-time atmospheric pressure is detected, it is determined that the vehicle enters a climbing section;

[0099] In the climbing section, converting the real-time atmospheric pressure information into real-time altitude information;

[0100] The estimated power generation power of the corresponding third range extender is determined based on the real-time altitude information and the power generation power corresponding to each altitude increment interval, and the sum of the estimated power generation power of the corresponding first range extender and the estimated power generation power of the corresponding third range extender is used as the estimated power generation power of the corresponding range extender for the corresponding climbing section.

[0101] On the basis of the above technical solutions, further, the estimated power generation determination module 220 may also include:

[0102] If there is no estimated altitude distribution information in the navigation information and there is a climbing section in the corresponding vehicle operating condition, for each vehicle operating condition, real-time atmospheric pressure information is collected based on the vehicle-mounted air pressure sensor and the vehicle-mounted angle sensor;

[0103] When it is detected that the real-time atmospheric pressure decreases and the duration is greater than or equal to a first preset time, determining that the vehicle enters a continuous climbing state;

[0104] Determining average slope information based on the altitude information within the first preset time;

[0105] The estimated power generation power of the corresponding fourth range extender is determined based on the average slope information and the power generation power corresponding to each slope interval, and the sum of the estimated power generation power of the corresponding first range extender and the estimated power generation power of the corresponding fourth range extender is used as the estimated power generation power of the corresponding range extender in the subsequent continuous climbing state.

[0106] On the basis of the above technical solutions, further, the actual power generation determination module 230 may include:

[0107] Determine the real-time cumulative power consumption on a flat road section or a climbing road section within the corresponding vehicle operating condition, wherein the real-time cumulative power consumption is the integral of the real-time power consumption from the initial time to the preset time, and the real-time power consumption integral is the integral of the product of the current and the voltage of the battery pack per unit time;

[0108] Determine the actual average power consumption based on the real-time accumulated power consumption and the duration from the initial moment to the preset moment;

[0109] Based on the actual average power consumption and the estimated power generation of the corresponding range extender, the actual power generation of the range extender in the subsequent corresponding vehicle operating condition is determined.

[0110] On the basis of the above technical solutions, further, the estimated power generation determination module 220 may include:

[0111] If the estimated vehicle speed is less than the preset vehicle speed and the duration is greater than or equal to the preset time period, it is determined that the vehicle enters a slow-moving section, and the vehicle operating conditions before and after the slow-moving section are regarded as two independent vehicle operating conditions.

[0112] On the basis of the above technical solutions, the extended-range vehicle fuel consumption reduction device further includes an independent vehicle operating condition determination unit, which is used to, after determining the vehicle operating condition according to the estimated vehicle speed distribution information in the navigation information, for each vehicle operating condition, in the corresponding vehicle operating condition, if it is detected that the real-time vehicle speed is less than the preset vehicle speed and the duration is greater than or equal to the preset time period, determine that the vehicle enters a congested section, and take the section after the congested section in the corresponding vehicle operating condition as an independent vehicle operating condition;

[0113] The estimated power generation power of the range extender and the actual power generation power of the range extender corresponding to the independent vehicle operating condition are re-determined.

[0114] The extended-range vehicle fuel consumption reduction device provided in the embodiment of the present application can execute the steps of the extended-range vehicle fuel consumption reduction method provided in the method embodiment of the present application, and the execution steps and beneficial effects are no longer repeated here.

[0115] Figure 3 This is a schematic diagram of the structure of a vehicle controller provided in an embodiment of the present application. Figure 3 As shown, the vehicle controller 300 includes a processor 331 and a memory 332, wherein the processor 331 can be one or more.

[0116] The processor 331 may be a central processing unit (CPU) or other forms of processing units having data processing capabilities and / or instruction execution capabilities, and may control other components in the vehicle controller 300 to perform desired functions.

[0117] The memory 332 may include one or more computer program products, which may include various forms of computer-readable storage media, such as volatile memory and / or non-volatile memory. The volatile memory may include, for example, random access memory (RAM) and / or cache memory (cache), etc. The non-volatile memory may include, for example, read-only memory (ROM), hard disk, flash memory, etc. One or more computer programs or instructions may be stored on the computer-readable storage medium, and the processor 331 may call the program or instruction to implement the power battery low power protection method of any embodiment of the present application described above and / or other desired functions. Various contents such as initial external parameters, thresholds, etc. may also be stored in the computer-readable storage medium.

[0118] In one example, the vehicle controller 300 may further include: an input device 333 and an output device 334, which are interconnected via a bus system and / or other forms of connection mechanisms (not shown). The input device 333 may include, for example, a keyboard, a mouse, etc. The output device 334 may output various information to the outside, including warning prompt information, braking force, etc. The output device 334 may include, for example, a display, a speaker, a printer, a communication network and a remote output device connected thereto, etc.

[0119] Of course, to simplify, Figure 3 Only some of the components related to the present application in the vehicle controller 300 are shown, and components such as a bus, an input / output interface, etc. are omitted. In addition, according to specific application conditions, the vehicle controller 300 may also include any other appropriate components.

[0120] In addition to the above-mentioned methods and devices, an embodiment of the present application may also be a computer program product, which includes computer program instructions, which, when executed by a processor, enable the processor to execute the steps of the extended-range vehicle fuel consumption reduction method provided in any embodiment of the present application.

[0121] The computer program product may be written in any combination of one or more programming languages ​​to write program codes for performing the operations of the embodiments of the present application, including object-oriented programming languages, such as Java, C++, etc., and conventional procedural programming languages, such as "C" language or similar programming languages. The program code may be executed entirely on the user computing device, partially on the user device, as an independent software package, partially on the user computing device and partially on a remote computing device, or entirely on a remote computing device or server.

[0122] In addition, an embodiment of the present application may also be a computer-readable storage medium on which a program or instruction is stored, and the program or instruction enables a computer to execute the steps of the method for reducing fuel consumption of an extended-range vehicle provided in any embodiment of the present application.

[0123] The computer readable storage medium can adopt any combination of one or more readable media. The readable medium can be a readable signal medium or a readable storage medium. The readable storage medium can include, for example, but is not limited to, a system, device or device of electricity, magnetism, light, electromagnetic, infrared, or semiconductor, or any combination of the above. More specific examples (non-exhaustive list) of readable storage media include: an electrical connection with one or more wires, a portable disk, a hard disk, a random access memory (RAM), a read-only memory (ROM), an erasable programmable read-only memory (EPROM or flash memory), an optical fiber, a portable compact disk read-only memory (CD-ROM), an optical storage device, a magnetic storage device, or any suitable combination of the above.

[0124] It should be noted that the terms used in this application are only for describing specific embodiments, rather than limiting the scope of this application. As shown in the specification and claims of this application, unless the context clearly indicates an exception, the words "one", "a", "a kind of" and / or "the" do not specifically refer to the singular, but may also include the plural. The terms "include", "comprise" or any other variant thereof are intended to cover non-exclusive inclusion, so that the process, method or device including a series of elements includes not only those elements, but also includes other elements not explicitly listed, or also includes elements inherent to such process, method or device. In the absence of further restrictions, the elements defined by the sentence "including one..." do not exclude the presence of other identical elements in the process, method or device including the elements.

[0125] It should also be noted that the terms "center", "up", "down", "left", "right", "vertical", "horizontal", "inside", "outside", etc., indicating the orientation or position relationship, are based on the orientation or position relationship shown in the drawings, and are only for the convenience of describing the present application and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as a limitation on the present application. Unless otherwise clearly specified and limited, the terms "installed", "connected", "connected", etc. should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection, or it can be an indirect connection through an intermediate medium, or it can be a connection between the two elements. For those of ordinary skill in the art, the specific meanings of the above terms in this application can be understood according to specific circumstances.

[0126] This article uses specific examples to illustrate the principles and implementation methods of this application. The description of the above embodiments is only used to help understand the method and its core ideas of this application. The above is only the preferred implementation method of this application. It should be pointed out that due to the limitations of textual expression and the objective existence of infinite specific structures, ordinary technicians in this technical field can make several improvements, modifications or changes without departing from the principles of this application, and can also combine the above technical features in an appropriate manner; these improvements, modifications, changes or combinations, or the direct application of the concept and technical solution of the invention to other occasions without improvement, should be regarded as the scope of protection of this application.

Claims

1. A method for reducing fuel consumption of a range-extended vehicle, characterized in that, executed by a vehicle controller, including: When it is detected that the remaining battery capacity is lower than the preset remaining battery capacity, determine the vehicle operating conditions corresponding to the subsequent journey through navigation information, and each vehicle operating condition includes a flat road section and / or a climbing section; Determine different estimated power generation powers of the range extender corresponding to different vehicle operating conditions, and control the range extender to generate electricity using the corresponding estimated power generation power of the range extender under different vehicle operating conditions, so that the remaining battery capacity is within the range of the preset remaining battery capacity; For each vehicle operating condition, if in the flat road section or the climbing section within the corresponding vehicle operating condition, the remaining battery capacity is lower than the minimum value of the preset remaining battery capacity range up to the preset time, then based on the real-time cumulative power consumption, determine the actual power generation power of the range extender, and control the range extender to generate electricity at the actual power generation power of the range extender within the corresponding section, so that the remaining battery capacity is within the range of the preset remaining battery capacity.

2. The method according to claim 1, characterized in that, The determination of different estimated power generation powers of the range extender corresponding to different vehicle operating conditions includes: Determine the vehicle operating conditions according to the estimated vehicle speed distribution information in the navigation information, and the vehicle operating conditions include urban conditions, suburban conditions, highway conditions and ultra-highway conditions; For each vehicle operating condition, if there is no climbing section within the corresponding vehicle operating condition, then based on the estimated average vehicle speed in the navigation information, the preset power consumption per 100 kilometers corresponding to the estimated average vehicle speed, and the estimated vehicle driving time corresponding to the estimated average vehicle speed, determine the corresponding first estimated power generation power of the range extender corresponding to the corresponding vehicle operating condition, and use the corresponding first estimated power generation power of the range extender as the corresponding estimated power generation power of the range extender, where the climbing section is a section where the estimated altitude in the navigation information continuously increases.

3. The method according to claim 2, characterized in that, The determination of different estimated power generation powers of the range extender corresponding to different vehicle operating conditions further includes: For each vehicle operating condition, if there is a climbing section within the corresponding vehicle operating condition, then in the corresponding climbing section, determine the corresponding second estimated power generation power of the range extender based on the estimated altitude distribution information in the navigation information and the estimated power generation power corresponding to each estimated altitude increment interval, and use the sum of the corresponding first estimated power generation power of the range extender and the corresponding second estimated power generation power of the range extender as the corresponding estimated power generation power of the range extender in the corresponding climbing section.

4. The method according to claim 2, characterized in that, The determination of different estimated power generation powers of the range extender corresponding to different vehicle operating conditions further includes: If there is no estimated altitude distribution information in the navigation information and there is a climbing section within the corresponding vehicle operating condition, then for each vehicle operating condition, collect real-time atmospheric pressure information based on an on-vehicle barometric pressure sensor and an on-vehicle angle sensor; When it is detected that the real-time atmospheric pressure decreases, determine that the vehicle enters a climbing section; In the climbing section, convert the real-time atmospheric pressure information into real-time altitude information; Determine the corresponding estimated power generation of the third range extender based on the real-time altitude information and the power generation power corresponding to each altitude increment interval, and use the sum of the corresponding estimated power generation of the first range extender and the corresponding estimated power generation of the third range extender as the corresponding estimated power generation of the range extender for the corresponding climbing section.

5. The method according to claim 2, wherein, the determining of the different estimated power generations of the range extender corresponding to different vehicle operating conditions further includes: if there is no estimated altitude distribution information in the navigation information and there is a climbing section in the corresponding vehicle operating condition, then for each vehicle operating condition, collect real-time atmospheric pressure information based on an on-vehicle barometric pressure sensor and an on-vehicle angle sensor; when it is detected that the real-time atmospheric pressure decreases and the duration is greater than or equal to a first preset time, determine that the vehicle enters a continuous climbing state; determine the average slope information based on the altitude information within the first preset time; determine the corresponding estimated power generation of the fourth range extender based on the average slope information and the power generation power corresponding to each slope interval, and use the sum of the corresponding estimated power generation of the first range extender and the corresponding estimated power generation of the fourth range extender as the corresponding estimated power generation of the range extender for the subsequent continuous climbing state.

6. The method according to any one of claims 2-5, wherein, if, in a flat road section or a climbing section within the corresponding vehicle operating condition, the remaining battery capacity as of a preset moment is lower than the minimum value of the preset remaining battery capacity range, then determine the actual power generation of the range extender based on the real-time cumulative power consumption, including: in a flat road section or a climbing section within the corresponding vehicle operating condition, determine the real-time cumulative power consumption, wherein the real-time cumulative power consumption is the integral of the real-time power consumption from an initial moment to the preset moment, and the integral of the real-time power consumption is the integral of the product of the current and voltage of the battery pack per unit time; determine the actual average power consumption based on the real-time cumulative power consumption and the duration from the initial moment to the preset moment; determine the actual power generation of the range extender for the subsequent corresponding vehicle operating condition based on the actual average power consumption and the corresponding estimated power generation of the range extender.

7. The method according to claim 6, wherein, determining the vehicle operating condition according to the estimated vehicle speed distribution information in the navigation information includes: if the estimated vehicle speed is less than a preset vehicle speed and the continuous time period is greater than or equal to a preset time period, then determine that the vehicle enters a slow-moving section, and use the vehicle operating conditions before and after the slow-moving section as two independent vehicle operating conditions.

8. The method according to claim 7, wherein, after determining the vehicle operating condition according to the estimated vehicle speed distribution information in the navigation information, further includes: for each vehicle operating condition, within the corresponding vehicle operating condition, if it is detected that the real-time vehicle speed is less than the preset vehicle speed and the continuous time period is greater than or equal to the preset time period, then determine that the vehicle enters a congested section, and use the section after the congested section within the corresponding vehicle operating condition as an independent vehicle operating condition; re-determine the estimated power generation of the range extender and the actual power generation of the range extender corresponding to the independent vehicle operating condition.

9. A vehicle controller, characterized in that, it includes a processor and a memory; the processor is configured to execute the steps of the method for reducing fuel consumption of a range-extended vehicle according to any one of claims 1 to 8 by calling the programs or instructions stored in the memory.

10. A computer-readable storage medium, characterized in that, the computer-readable storage medium stores programs or instructions, and the programs or instructions cause a computer to execute the steps of the method for reducing fuel consumption of a range-extended vehicle according to any one of claims 1 to 8.

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