Method and device for determining fuel endurance mileage of hybrid electric vehicle and vehicle

Abstract

The invention discloses a hybrid electric vehicle fuel endurance mileage determination method and device and a vehicle. The method comprises the steps that in the vehicle running process, the running state, the first average fuel consumption and the second average fuel consumption of the vehicle are obtained, the running state comprises the remaining fuel quantity, the vehicle speed and the driving mode, and the first average fuel consumption and the second average fuel consumption of the vehicle are obtained; the first average fuel consumption is the average fuel consumption consumed when the vehicle travels for a first preset mileage, the second average fuel consumption is the average fuel consumption consumed when the vehicle travels for a second preset mileage, and the length of the second preset mileage is larger than that of the first preset mileage; based on the running state, the first average fuel consumption and the second average fuel consumption, comprehensive fuel consumption of the vehicle is determined; and determining the endurance mileage of the vehicle based on the comprehensive oil consumption and the remaining oil quantity. According to the method, by considering the average fuel consumption of the long driving mileage and the short driving mileage of the vehicle, relatively accurate comprehensive fuel consumption is analyzed, so that the fuel endurance mileage of the hybrid vehicle is predicted more accurately.

Description

Technical Field

[0001] The present invention relates to the field of vehicle technology, and in particular to a method and device for determining the fuel range of a hybrid vehicle, and a vehicle. Background Art

[0002] As people's environmental awareness increases and the social energy structure adjusts, hybrid vehicles, as a means of transportation to achieve energy conservation and emission reduction, are increasingly favored by the market. However, the calculation of the range of hybrid vehicles has always been a technical problem in the industry. Traditional calculation methods often cannot accurately reflect the actual range of vehicles under different working conditions, causing trouble for consumers.

[0003] The fuel consumption algorithm currently used is relatively complex. It estimates the engine's operating conditions based on the road condition information of the hybrid electric vehicle's route to be driven, and then estimates the vehicle's first fuel consumption. The first fuel consumption and historical fuel consumption are weighted to calculate the second fuel consumption. However, the estimated first fuel consumption cannot guarantee accuracy, which may cause the second fuel consumption to deviate too much from the actual fuel consumption, resulting in inaccurate calculation of the range. Therefore, it is particularly important to develop a more scientific and accurate method for calculating the fuel range of hybrid vehicles. Summary of the invention

[0004] The embodiments of the present application provide a method, device and vehicle for determining the fuel range of a hybrid vehicle. By considering the average fuel consumption of the vehicle for long and short mileages, a more accurate comprehensive fuel consumption is analyzed, thereby more accurately predicting the fuel range of the hybrid vehicle.

[0005] In a first aspect, the present invention provides the following technical solution through an embodiment of the present invention:

[0006] A method for determining a fuel cruising range of a hybrid vehicle comprises: obtaining an operating state, a first average fuel consumption and a second average fuel consumption of the vehicle during vehicle operation, wherein the operating state comprises a remaining fuel volume, a vehicle speed and a driving mode, the first average fuel consumption is an average fuel consumption consumed by the vehicle when traveling a first preset mileage, the second average fuel consumption is an average fuel consumption consumed by the vehicle when traveling a second preset mileage, and the length of the second preset mileage is greater than the length of the first preset mileage; determining a comprehensive fuel consumption of the vehicle based on the operating state, the first average fuel consumption and the second average fuel consumption; and determining a cruising range of the vehicle based on the comprehensive fuel consumption and the remaining fuel volume.

[0007] Preferably, the comprehensive fuel consumption of the vehicle is determined based on the operating state, the first average fuel consumption and the second average fuel consumption, including: determining a weighting factor according to the remaining fuel amount, determining a vehicle speed correction coefficient according to the vehicle speed, and determining a driving mode correction coefficient according to the driving mode; weighting the first average fuel consumption, the second average fuel consumption and the weighting factor, and then multiplying them with the vehicle speed correction coefficient and the driving mode correction coefficient to determine the comprehensive fuel consumption of the vehicle.

[0008] Preferably, the first average fuel consumption and the second average fuel consumption are obtained by the following steps: determining a first unit distance, a second unit distance, a first unit fuel consumption and a second unit fuel consumption in each sampling period, respectively, wherein the first unit distance is the distance traveled per unit time by the vehicle when traveling a first preset mileage, the second unit distance is the distance traveled per unit time by the vehicle when traveling a second preset mileage, the first unit fuel consumption is the fuel consumption per unit time by the vehicle when traveling the first preset mileage, and the second unit fuel consumption is the fuel consumption per unit time by the vehicle when traveling the second preset mileage; determining the first average fuel consumption consumed by the vehicle when traveling the first preset mileage based on the first unit distance, the first unit fuel consumption, the first average fuel consumption of the previous sampling period and the first preset mileage, and determining the second average fuel consumption consumed by the vehicle when traveling the second preset mileage based on the second unit distance, the second unit fuel consumption, the second average fuel consumption of the previous sampling period and the second preset mileage.

[0009] Preferably, the determining of the first unit distance, the second unit distance, the first unit fuel consumption and the second unit fuel consumption includes: obtaining the total driving time, the total driving distance and the total fuel consumption of the vehicle; obtaining the total driving time, the total driving distance and the total fuel consumption of the vehicle; if the total driving distance is less than or equal to the first preset mileage, determining the first unit distance, the second unit distance, the first unit fuel consumption and the second unit fuel consumption of the vehicle according to the total driving time, the total driving distance and the total fuel consumption.

[0010] Preferably, the determining of the first unit distance, the second unit distance, the first unit fuel consumption and the second unit fuel consumption includes: obtaining the total driving time, the total driving distance and the total fuel consumption of the vehicle; if the total driving distance is greater than the first preset mileage and less than or equal to the second preset mileage, then obtaining the first total time required for the vehicle's latest first preset mileage, the first total fuel consumption required for the latest first preset mileage, the total driving time of the vehicle, the total driving distance and the total fuel consumption; determining the first unit distance and the first unit fuel consumption of the vehicle based on the first total time, the first total fuel consumption and the first preset mileage, and determining the second unit distance and the second unit fuel consumption of the vehicle based on the total driving time, the total driving distance and the total fuel consumption.

[0011] Preferably, the determining of the first unit distance, the second unit distance, the first unit fuel consumption and the second unit fuel consumption includes: if the total driving distance is greater than the second preset mileage, obtaining the first total time required for the vehicle's latest first preset mileage, the first total fuel consumption required for the latest first preset mileage, the second total time required for the latest second preset mileage and the second total fuel consumption required for the latest second preset mileage; determining the first unit distance and the first unit fuel consumption of the vehicle based on the first total time, the first total fuel consumption and the first preset mileage, and determining the second unit distance and the second unit fuel consumption of the vehicle based on the second total time, the second total fuel consumption and the second preset mileage.

[0012] Preferably, obtaining the remaining fuel amount of the vehicle includes: obtaining a liquid level resistance signal of the vehicle's fuel tank and a slope signal of the vehicle; looking up a preset first correspondence table according to the liquid level resistance signal and the slope signal to determine a corrected resistance value, and determining the remaining fuel amount of the vehicle according to the corrected resistance value, wherein the preset first correspondence table includes different resistance values ​​and corresponding corrected resistance values ​​at different slope values.

[0013] Preferably, after determining the cruising range of the vehicle, the method further includes: determining a fuel quantity percentage based on the remaining fuel quantity, and looking up a preset first correspondence table according to the fuel quantity percentage to determine a filter coefficient, wherein the preset first correspondence table includes a correspondence between the fuel quantity percentage and the filter coefficient; correcting the cruising range according to the filter coefficient, and displaying the corrected cruising range in the vehicle's odometer.

[0014] In a second aspect, the present invention provides the following technical solution through an embodiment of the present invention:

[0015] A device for determining the fuel range of a hybrid vehicle, comprising:

[0016] an acquisition module, configured to acquire, during vehicle operation, an operation state, a first average fuel consumption, and a second average fuel consumption of the vehicle, wherein the operation state includes a remaining fuel amount, a vehicle speed, and a driving mode, the first average fuel consumption is an average fuel consumption consumed by the vehicle when traveling a first preset mileage, and the second average fuel consumption is an average fuel consumption consumed by the vehicle when traveling a second preset mileage, wherein the length of the second preset mileage is greater than the length of the first preset mileage;

[0017] a comprehensive fuel consumption determination module, configured to determine the comprehensive fuel consumption of the vehicle based on the operating state, the first average fuel consumption, and the second average fuel consumption;

[0018] The cruising range determination module is used to determine the cruising range of the vehicle based on the comprehensive fuel consumption and the remaining fuel amount.

[0019] In a third aspect, the present invention provides the following technical solution through an embodiment of the present invention:

[0020] A vehicle comprises: a memory, a processor and a computer program stored in the memory and executable on the processor, wherein the processor implements the steps of any one of the methods described in the first aspect when executing the program.

[0021] One or more technical solutions provided in the embodiments of the present application have at least the following technical effects or advantages:

[0022] The method for determining the fuel cruising range of a hybrid vehicle provided by an embodiment of the present invention determines the comprehensive fuel consumption of the vehicle based on the running state, the first average fuel consumption of the vehicle traveling a first preset mileage, and the second average fuel consumption of the vehicle traveling a second preset mileage. The first average fuel consumption of the first preset mileage and the second average fuel consumption of the second preset mileage are calculated respectively, and the comprehensive fuel consumption is obtained according to different remaining fuel amounts, so that the theoretical cruising range is closer to the expected driving range of the vehicle. The method comprehensively considers multiple factors such as the remaining fuel amount and the comprehensive fuel consumption of the vehicle, more accurately determines the fuel efficiency of the vehicle under different driving conditions, more accurately predicts the fuel cruising range of the hybrid vehicle, realizes a more scientific and accurate calculation of the fuel cruising range of the hybrid vehicle, and improves driving safety and user experience. BRIEF DESCRIPTION OF THE DRAWINGS

[0023] In order to more clearly illustrate the technical solutions in the embodiments of the present invention, the following briefly introduces the drawings required for use in the description of the embodiments. Obviously, the drawings described below are some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without creative work.

[0024] Figure 1 is a flow chart of a method for determining a fuel range of a hybrid vehicle in an embodiment of the present invention;

[0025] Figure 2 Schematic diagram of the structure of a device for determining a fuel cruising range of a hybrid vehicle in an embodiment of the present invention;

[0026] Figure 3 Schematic diagram of the structure of a vehicle in an embodiment of the present invention. DETAILED DESCRIPTION

[0027] The embodiments of the present application provide a method, device and vehicle for determining the fuel range of a hybrid vehicle. By considering the average fuel consumption of the vehicle for long and short mileages, a more accurate comprehensive fuel consumption is analyzed, thereby more accurately predicting the fuel range of the hybrid vehicle.

[0028] The technical solution of the embodiment of the present application is to solve the above technical problems, and the overall idea is as follows:

[0029] A method for determining a fuel cruising range of a hybrid vehicle comprises: obtaining a running state, a first average fuel consumption and a second average fuel consumption of the vehicle during vehicle operation, wherein the running state comprises a remaining fuel volume, a vehicle speed and a driving mode, the first average fuel consumption is an average fuel consumption consumed by the vehicle when traveling a first preset mileage, the second average fuel consumption is an average fuel consumption consumed by the vehicle when traveling a second preset mileage, and the length of the second preset mileage is greater than the length of the first preset mileage; determining a comprehensive fuel consumption of the vehicle based on the running state, the first average fuel consumption and the second average fuel consumption; and determining a cruising range of the vehicle based on the comprehensive fuel consumption and the remaining fuel volume.

[0030] In order to better understand the above technical solution, the above technical solution will be described in detail below in conjunction with the accompanying drawings and specific implementation methods.

[0031] In a first aspect, an embodiment of the present invention provides a method for determining a fuel range of a hybrid vehicle. Specifically, Figure 1 As shown, the method includes the following steps S101 to S103:

[0032] Step S101, during vehicle operation, obtaining the operating state, first average fuel consumption and second average fuel consumption of the vehicle, wherein the operating state includes the remaining fuel amount, vehicle speed and driving mode, the first average fuel consumption is the average fuel consumption of the vehicle when traveling a first preset mileage, the second average fuel consumption is the average fuel consumption of the vehicle when traveling a second preset mileage, and the length of the second preset mileage is greater than the length of the first preset mileage.

[0033] In a specific embodiment, the remaining fuel amount of the vehicle can be determined directly based on the liquid level resistance signal of the vehicle's fuel tank, and the vehicle speed and the current driving mode can be retrieved to determine the operating status of the vehicle.

[0034] Furthermore, in order to more accurately determine the remaining fuel amount of the vehicle, the method of obtaining the remaining fuel amount of the vehicle may also include: obtaining a liquid level resistance signal of the vehicle's fuel tank and a slope signal of the vehicle; searching a preset first relationship table according to the liquid level resistance signal and the slope signal to determine a corrected resistance value, wherein the preset first relationship table includes different resistance values ​​and corresponding corrected resistance values ​​at different slope values; and determining the remaining fuel amount of the vehicle according to the corrected resistance value.

[0035] Specifically, the vehicle is provided with a fuel tank level sensor and a ramp sensor. According to the resistance signal obtained by the fuel tank level sensor and the slope signal obtained by the vehicle-mounted ramp sensor, a preset first relationship table is checked according to the liquid level resistance signal and the slope signal to determine the corrected resistance value.

[0036] In another embodiment, after obtaining the liquid level resistance signal and the slope signal, the slope signal is converted into an arc signal; the preset second relationship table is checked according to the liquid level resistance signal and the arc signal to determine the corrected resistance value and the remaining fuel volume of the vehicle, wherein the preset second relationship table includes different resistance values ​​and the corresponding corrected resistance values ​​under different arc values. Thus, the influence of the slope on the fuel volume resistance signal is eliminated and converted into a more accurate fuel volume signal.

[0037] For example, the resistance range of the fuel tank level sensor is 30Ω~350Ω, corresponding to the fuel volume of 61L~3L. The negative value of the slope signal means the front of the vehicle is downward, and the positive value means the front of the vehicle is upward. The vehicle controller VCU checks the preset second relationship table according to the received resistance signal and radian signal to correct the corresponding liquid level resistance value on flat ground, so as to avoid the fuel level being inaccurate due to the tilt of the vehicle angle, which affects the endurance calculation. Among them, the slope = 100×tan (radian), and the radian size is obtained. The preset second relationship table is shown in Table 1 below:

[0038] Table 1

[0039]

[0040]

[0041] According to the corrected resistance value, the preset third relationship table is queried to determine the remaining oil volume and the oil level indication. The preset third relationship table includes the remaining oil volume and the oil level indication corresponding to different resistance values. The following Table 2 gives an exemplary preset third relationship table:

[0042] Table 2

[0043]

[0044] In the specific implementation process, the first average fuel consumption and the second average fuel consumption are obtained through the following steps: in each sampling period, the first unit distance, the second unit distance, the first unit fuel consumption and the second unit fuel consumption are determined respectively, wherein the first unit distance is the distance traveled per unit time by the vehicle when traveling the first preset mileage, the second unit distance is the distance traveled per unit time by the vehicle when traveling the second preset mileage, the first unit fuel consumption is the fuel consumption per unit time by the vehicle when traveling the first preset mileage, and the second unit fuel consumption is the fuel consumption per unit time by the vehicle when traveling the second preset mileage; based on the first unit distance, the first unit fuel consumption, the first average fuel consumption of the previous sampling period and the first preset mileage, the first average fuel consumption consumed by the vehicle when traveling the first preset mileage is determined, and based on the second unit distance, the second unit fuel consumption, the second average fuel consumption of the previous sampling period and the second preset mileage, the second average fuel consumption consumed by the vehicle when traveling the second preset mileage is determined.

[0045] Optionally, the sampling period is 10ms, 1s or 10s. The first preset mileage may be between 20km and 100km, for example, 50km, and the second preset mileage may be between 400km and 600km, for example, 500km. The following is an example of calculating the average fuel consumption within the first preset mileage of 50km and the second preset mileage of 500km.

[0046] In a specific embodiment, determining the first unit distance, the second unit distance, the first unit fuel consumption, and the second unit fuel consumption may include: obtaining the total driving time, the total driving distance, and the total fuel consumption of the vehicle; if the total driving distance is less than or equal to the first preset mileage, determining the first unit distance, the second unit distance, the first unit fuel consumption, and the second unit fuel consumption of the vehicle based on the total driving time, the total driving distance, and the total fuel consumption.

[0047] Specifically, the total driving time T, total driving distance Y and total fuel consumption P of the vehicle are obtained; it is determined whether the total driving distance Y is greater than the first preset mileage MileageS, and whether Y is greater than the second preset mileage MileageL; when the total driving distance Y is less than or equal to the first preset mileage MileageS, the first unit distance DisS and the second unit distance DisL of the vehicle are determined according to the total driving time T and the total driving distance Y, and the first unit fuel consumption FualS and the second unit fuel consumption FualL of the vehicle are determined according to the total driving time T and the total fuel consumption P. Here, the first unit distance DisS is equal to the second unit distance DisL, and the first unit fuel consumption FualS is equal to the second unit fuel consumption FualL.

[0048] Based on the first unit distance, the first unit fuel consumption, the first average fuel consumption of the previous sampling period, and the first preset mileage, determining the first average fuel consumption OilCnsS(t) consumed by the vehicle traveling the first preset mileage may include using Formula 1:

[0049] OilCnsS(t)=OilCnsS(t-1)-OilCnsS(t-1)×DisS / MileageS+FualS / MileageS

[0050] Determine the first average fuel consumption OilCnsS(t), where OilCnsS(t-1) is the first average fuel consumption in the previous sampling period, DisS is the first unit distance, MileageS is the first preset mileage, that is, the fuel consumption calculation mileage window for traveling the first preset mileage, and FualS is the first unit fuel consumption.

[0051] Determining the second average fuel consumption consumed by the vehicle traveling the second preset mileage based on the second unit distance, the second unit fuel consumption, the second average fuel consumption in the previous sampling period, and the second preset mileage may include using Formula 2:

[0052] OilCnsL(t)=OilCnsL(t-1)-OilCnsL(t-1)×DisL / MileageL+FualL / MileageL

[0053] The second average fuel consumption OilCnsL(t) is determined, where OilCnsL(t-1) is the second average fuel consumption in the previous sampling period, DisL is the second unit distance, MileageL is the second preset mileage, that is, the fuel consumption calculation mileage window for traveling the second preset mileage, and FualL is the second unit fuel consumption.

[0054] The determining of the first unit distance, the second unit distance, the first unit fuel consumption and the second unit fuel consumption includes: obtaining the total driving time, the total driving distance and the total fuel consumption of the vehicle; if it is determined that the total driving distance Y is greater than the first preset mileage MileageS, and Y is less than or equal to the second preset mileage MileageL, then obtaining the first total time T1 required for the vehicle's latest first preset mileage, the first total fuel consumption P1 required for the latest first preset mileage, the total driving time T, the total driving distance Y and the total fuel consumption P.

[0055] Among them, the first total time required for the vehicle's most recent first preset mileage refers to: the time taken by the vehicle to travel the first preset mileage most recently at the current collection time; the first fuel consumption required for the vehicle's most recent first preset mileage refers to: the fuel consumption consumed by the vehicle's most recent first preset mileage at the current collection time.

[0056] For example, taking the first preset mileage as 50km, when the total driving distance of the vehicle is 60km, the first total time required for the vehicle's latest first preset mileage is: the time used for the vehicle's latest 50km driving, and the first total fuel consumption required for the vehicle's latest first preset mileage is: the fuel consumption consumed for the vehicle's latest 50km driving.

[0057] According to the first total time T1 and the first preset mileage MileageS, the first unit distance DisS of the vehicle is determined, and according to the first total time T1 and the first total fuel consumption P1, the first unit fuel consumption FualS of the vehicle is determined. According to the total driving time T and the total driving distance Y, the second unit distance DisL of the vehicle is determined, and according to the total driving time T and the total fuel consumption P, the second unit fuel consumption FualL of the vehicle is determined.

[0058] Substitute the first unit distance DisS, the first unit fuel consumption FualS, the first average fuel consumption OilCnsS(t-1) of the previous sampling period, and the first preset mileage MileageS into the aforementioned formula 1 to determine the first average fuel consumption OilCnsS(t). Substitute the second unit distance DisL, the second unit fuel consumption FualL, the second average fuel consumption OilCnsL(t-1) of the previous sampling period, and the second preset mileage MileageL into the aforementioned formula 2 to determine the second average fuel consumption.

[0059] The determining of the first unit distance, the second unit distance, the first unit fuel consumption and the second unit fuel consumption includes: obtaining the total driving time, the total driving distance and the total fuel consumption of the vehicle; if it is determined that the total driving distance Y is greater than the second preset mileage MileageL, then obtaining the first total time T1 required for the vehicle's latest first preset mileage, the first total fuel consumption P1 required for the latest first preset mileage, the second total time T2 required for the latest second preset mileage, and the second total fuel consumption P2 required for the latest second preset mileage; determining the first unit distance DisS and the first unit fuel consumption FualS of the vehicle based on the first total time T1, the first total fuel consumption P1 and the first preset mileage MileageS, and determining the second unit distance DisL and the second unit fuel consumption FualL of the vehicle based on the second total time T2, the second total fuel consumption P2 and the second preset mileage MileageL.

[0060] For example, the second total time required to obtain the vehicle's latest second preset mileage is: the total time used to obtain the vehicle's latest 500 km mileage, and the second total fuel consumption required to obtain the vehicle's latest second preset mileage is: the total fuel consumption used to obtain the vehicle's latest 500 km mileage.

[0061] The second unit distance DisL of the vehicle is determined according to the second total time T2 and the second preset mileage MileageL, and the second unit fuel consumption FualL of the vehicle is determined according to the second total time T2 and the second total fuel consumption P2.

[0062] Next, the first unit distance DisS, the first unit fuel consumption FualS, the first average fuel consumption OilCnsS(t-1) of the previous sampling period and the first preset mileage MileageS are substituted into formula 1 to determine the first average fuel consumption OilCnsS(t), and the second unit distance DisL, the second unit fuel consumption FualL, the second average fuel consumption OilCnsL(t-1) of the previous sampling period and the second preset mileage L are substituted into formula 2 to determine the second average fuel consumption OilCnsL(t).

[0063] Step S102: determining the comprehensive fuel consumption of the vehicle based on the operating state, the first average fuel consumption and the second average fuel consumption.

[0064] In a specific embodiment, based on the operating state, the first average fuel consumption and the second average fuel consumption, the comprehensive fuel consumption of the vehicle is determined, which may include: determining a weighting factor according to the remaining fuel, determining a speed correction coefficient according to the vehicle speed, and determining a driving mode correction coefficient according to the driving mode; weighting the first average fuel consumption, the second average fuel consumption and the weighting factor, and then multiplying them with the speed correction coefficient and the driving mode correction coefficient to determine the comprehensive fuel consumption of the vehicle. It should be noted that the remaining fuel, vehicle speed and driving mode here refer to the corresponding remaining fuel, vehicle speed and driving mode at the time of collection.

[0065] Specifically, the weighting factor Kop can be obtained by looking up the preset second corresponding table according to the fuel amount in the tank (remaining fuel amount), wherein the preset second corresponding table includes the corresponding relationship between the remaining fuel amount and the weighting factor. In the preset second corresponding table, the higher the remaining fuel amount, the greater the long mileage weighting factor, and the lower the remaining fuel amount, the greater the short mileage weighting factor.

[0066] The vehicle speed correction coefficient Kspeed can be obtained by looking up a preset third correspondence table according to the vehicle speed, wherein the preset third correspondence table includes the correspondence between the vehicle speed and the vehicle speed correction coefficient. In the preset third correspondence table, the faster the vehicle speed, the greater the vehicle speed correction coefficient Kspeed.

[0067] The driving mode correction coefficient Kdm can be obtained by looking up the preset fourth correspondence table according to the driving mode, wherein the preset fourth correspondence table includes the correspondence between the driving mode and the driving mode correction coefficient. For example, in the preset fourth correspondence table, when the driving mode is the Sport mode, the correction coefficient is 1.1, when the driving mode is the Comfort mode, the correction coefficient is 1.0, and when the driving mode is the ECO mode, the correction coefficient is 0.9.

[0068] In a specific embodiment, after weighting the first average fuel consumption, the second average fuel consumption and the weighting factor, multiplying them by the vehicle speed correction coefficient and the driving mode correction coefficient to determine the comprehensive fuel consumption of the vehicle may include using Formula 3:

[0069] OilCnsC(t)=(OilCnsL(t)×Kop+OilCnsS(t)×(1-Kop))×Kdm×Kspeed

[0070] The comprehensive fuel consumption of the vehicle is determined, wherein OilCnsL(t) is the second average fuel consumption, Kop is the weighting factor, OilCnsS(t) is the first average fuel consumption, Kdm is the driving mode correction coefficient, and Kspeed is the vehicle speed correction coefficient.

[0071] Therefore, by respectively calculating the first average fuel consumption OilCnsL(t) and the second average fuel consumption OilCnsS(t), and obtaining the weighting factor Kop according to the fuel tank fuel level, and making corrections based on KOP, the first average fuel consumption OilCnsL(t), the second average fuel consumption OilCnsS(t), the driving mode correction coefficient Kdm, the vehicle speed correction coefficient Kspeed and other coefficients, the comprehensive fuel consumption for calculating the cruising range is obtained.

[0072] Step S103, determining the cruising range of the vehicle based on the comprehensive fuel consumption and the remaining fuel amount.

[0073] In a specific embodiment, based on the comprehensive fuel consumption OilCnsC and the remaining fuel volume Voilrem, determining the cruising range OilRemainMileageReal of the vehicle may include using Formula 4:

[0074] OilRemainMileageReal=Voilrem / OilCnsC

[0075] Determine the vehicle's range.

[0076] Furthermore, in order to obtain a more accurate cruising range, after determining the cruising range of the vehicle, it may also include: determining the percentage of fuel volume based on the remaining fuel volume, and checking a preset first correspondence table according to the percentage of fuel volume to determine a filter coefficient, wherein the preset first correspondence table includes a correspondence between the percentage of fuel volume and the filter coefficient; correcting the cruising range according to the filter coefficient, and displaying the corrected cruising range in the odometer of the vehicle. The displayed cruising range is corrected to the actual cruising range according to a certain filter coefficient, so that the displayed cruising range change curve is smooth, and the falling speed is close to the actual driving distance, and the displayed cruising range is obtained according to the filter coefficient for instrument display.

[0077] The fuel percentage is the ratio of the remaining fuel to the total capacity of the fuel tank. Therefore, the fuel percentage can be determined according to the remaining fuel, and then the filter coefficient can be determined. In the preset first corresponding table, the higher the fuel percentage, the larger the filter coefficient, which is more inclined to the actual mileage.

[0078] The remaining fuel volume in this application is calculated based on the tank level signal and corrected based on the front and rear tilt angle of the vehicle, eliminating the influence of the vehicle angle on the fuel volume calculation. The average fuel consumption for long mileage and short mileage is calculated separately, and the weighting factor is obtained by looking up the table according to the fuel volume in the tank. The comprehensive fuel consumption for cruising range calculation is corrected based on the weighting factor, the average fuel consumption for long mileage, the average fuel consumption for short mileage, the driving mode correction factor, the vehicle speed correction factor, and other factors. This method takes into account multiple factors such as the remaining fuel volume and comprehensive fuel consumption of the vehicle, and can more accurately predict the fuel range of hybrid vehicles.

[0079] In summary, a method for determining the fuel cruising range of a hybrid vehicle provided by an embodiment of the present invention considers the average fuel consumption of the vehicle for long and short mileages, performs weighted calculation and analysis to obtain a more accurate comprehensive fuel consumption, thereby more accurately predicting the fuel cruising range of the hybrid vehicle, making the theoretical cruising range closer to the expected mileage of the vehicle. This application optimizes the vehicle fuel consumption calculation, more accurately determines the fuel efficiency of the vehicle under different driving conditions, more accurately predicts the fuel cruising range of the hybrid vehicle, and achieves a more scientific and accurate calculation of the fuel cruising range of the hybrid vehicle, thereby improving driving safety and user experience. This helps the driver adjust his driving habits to achieve the desired fuel consumption value, thereby improving fuel economy.

[0080] In the second aspect, based on the same inventive concept, this embodiment provides a device for determining the fuel range of a hybrid vehicle, such as Figure 2 As shown, including:

[0081] The acquisition module 401 is used to acquire the operation state, the first average fuel consumption and the second average fuel consumption of the vehicle during the operation of the vehicle, wherein the operation state includes the remaining fuel, the vehicle speed and the driving mode, the first average fuel consumption is the average fuel consumption consumed by the vehicle when traveling a first preset mileage, and the second average fuel consumption is the average fuel consumption consumed by the vehicle when traveling a second preset mileage, and the length of the second preset mileage is greater than the length of the first preset mileage;

[0082] a comprehensive fuel consumption determination module 402, configured to determine the comprehensive fuel consumption of the vehicle based on the operating state, the first average fuel consumption, and the second average fuel consumption;

[0083] The cruising range determination module 403 is used to determine the cruising range of the vehicle based on the comprehensive fuel consumption and the remaining fuel amount.

[0084] As an optional embodiment, the comprehensive fuel consumption determination module 402 is specifically used to: determine a weighting factor according to the remaining fuel amount, determine a vehicle speed correction coefficient according to the vehicle speed, and determine a driving mode correction coefficient according to the driving mode; after weighting the first average fuel consumption, the second average fuel consumption and the weighting factor, multiply them with the vehicle speed correction coefficient and the driving mode correction coefficient to determine the comprehensive fuel consumption of the vehicle.

[0085] As an optional embodiment, the acquisition module 401 specifically includes:

[0086] A first acquisition submodule is used to determine, in each sampling period, a first unit distance, a second unit distance, a first unit fuel consumption, and a second unit fuel consumption, respectively, wherein the first unit distance is a unit time travel distance of the vehicle during the process of traveling a first preset mileage, the second unit distance is a unit time travel distance of the vehicle during the process of traveling a second preset mileage, the first unit fuel consumption is a unit time fuel consumption of the vehicle during the process of traveling the first preset mileage, and the second unit fuel consumption is a unit time fuel consumption of the vehicle during the process of traveling the second preset mileage;

[0087] The average fuel consumption determination submodule is used to determine the first average fuel consumption consumed by the vehicle for traveling a first preset mileage based on the first unit distance, the first unit fuel consumption, the first average fuel consumption in the previous sampling period and the first preset mileage, and to determine the second average fuel consumption consumed by the vehicle for traveling a second preset mileage based on the second unit distance, the second unit fuel consumption, the second average fuel consumption in the previous sampling period and the second preset mileage.

[0088] As an optional embodiment, the first acquisition submodule is specifically used to: obtain the total driving time, total driving distance and total fuel consumption of the vehicle; if the total driving distance is less than or equal to the first preset mileage, then determine the vehicle's first unit distance, second unit distance, first unit fuel consumption and second unit fuel consumption based on the total driving time, total driving distance and total fuel consumption.

[0089] As an optional embodiment, the first acquisition submodule is specifically used to: obtain the total driving time, total driving distance and total fuel consumption of the vehicle; if the total driving distance is greater than the first preset mileage and less than or equal to the second preset mileage, then obtain the first total time required for the vehicle's latest first preset mileage, the first total fuel consumption required for the latest first preset mileage, the total driving time, total driving distance and total fuel consumption of the vehicle; determine the first unit distance and first unit fuel consumption of the vehicle based on the first total time, the first total fuel consumption and the first preset mileage, and determine the second unit distance and second unit fuel consumption of the vehicle based on the total driving time, the total driving distance and the total fuel consumption.

[0090] As an optional embodiment, the first acquisition submodule is specifically used to: obtain the total driving time, total driving distance and total fuel consumption of the vehicle; if the total driving distance is greater than the second preset mileage, obtain the first total time required for the vehicle's latest first preset mileage, the first total fuel consumption required for the latest first preset mileage, the second total time required for the latest second preset mileage, and the second total fuel consumption required for the latest second preset mileage; determine the first unit distance and the first unit fuel consumption of the vehicle based on the first total time, the first total fuel consumption and the first preset mileage, and determine the second unit distance and the second unit fuel consumption of the vehicle based on the second total time, the second total fuel consumption and the second preset mileage.

[0091] As an optional embodiment, the acquisition module 401 is specifically used to: obtain a liquid level resistance signal of a vehicle's fuel tank and a slope signal of the vehicle; query a preset first relationship table according to the liquid level resistance signal and the slope signal to determine a corrected resistance value, and determine the remaining fuel amount of the vehicle according to the corrected resistance value, wherein the preset first relationship table includes different resistance values ​​and corresponding corrected resistance values ​​at different slope values.

[0092] As an optional embodiment, the device also includes: a filtering module, used to determine the fuel quantity percentage based on the remaining fuel quantity, and to check a preset first corresponding table according to the fuel quantity percentage to determine a filtering coefficient, wherein the preset first corresponding table includes a corresponding relationship between the fuel quantity percentage and the filtering coefficient; correcting the cruising range according to the filtering coefficient, and displaying the corrected cruising range in the vehicle's odometer.

[0093] The above modules can be implemented by software codes, in which case, the above modules can be stored in the memory of the control device. The above modules can also be implemented by hardware such as integrated circuit chips.

[0094] An embodiment of the present invention provides a device for determining the fuel range of a hybrid vehicle, and its implementation principle and technical effects are the same as those of the aforementioned method embodiment. For the sake of brief description, for matters not mentioned in the device embodiment, reference may be made to the corresponding contents in the aforementioned method embodiment.

[0095] In a third aspect, based on the same inventive concept, this embodiment provides a vehicle 500, such as Figure 3 As shown, it includes: a voice module 504, a memory 501, a processor 502 and a computer program 503 stored in the memory and executable on the processor. When the processor 501 executes the program, the steps of the method for determining the fuel range of a hybrid vehicle described in the first aspect are implemented.

[0096] Those skilled in the art will readily appreciate other embodiments of the present invention after considering the specification and practicing the invention disclosed herein. The present invention is intended to cover any variations, uses or adaptations of the present invention that follow the general principles of the present invention and include common knowledge or customary techniques in the art that are not disclosed in this disclosure. The description and examples are to be considered exemplary only, and the true scope and spirit of the present invention are indicated by the following claims.

[0097] Those skilled in the art will appreciate that embodiments of the present invention may be provided as methods, systems, or computer program products. Therefore, the present invention may take the form of a complete hardware embodiment, a complete software embodiment, or an embodiment combining software and hardware. Moreover, the present invention may take 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.

[0098] The present invention is described with reference to flowcharts and / or block diagrams of methods, devices (systems), and computer program products according to embodiments of the present invention. It should be understood that each process and / or block in the flowchart and / or block diagram, as well as the combination of processes and / or blocks 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 device to produce a machine, so that the instructions executed by the processor of the computer or other programmable data processing 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 module that specifies functions in one or more boxes.

[0099] These computer program instructions may also be stored in a computer-readable memory that can direct a computer or other programmable data processing device to work in a specific manner, so that the instructions stored in the computer-readable memory produce a manufactured product including an instruction module, which is implemented in the process Figure 1 A process or multiple processes and / or boxes Figure 1 A function specified in one or more boxes.

[0100] These computer program instructions can also be loaded onto a computer or other programmable data processing device so that a series of operating steps are executed on the computer or other programmable device to produce a computer-implemented process, thereby providing instructions for implementing 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.

[0101] Although the preferred embodiments of the present invention have been described, those skilled in the art may make other 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 present invention.

[0102] Obviously, those skilled in the art can make various changes and modifications to the present invention without departing from the spirit and scope of the present invention. Thus, if these modifications and variations of the present invention fall within the scope of the claims of the present invention and their equivalents, the present invention is also intended to include these modifications and variations.

Claims

1. A method for determining the fuel range of a hybrid vehicle, characterized in that: The method comprises: During vehicle operation, obtaining the operation state, the first average fuel consumption and the second average fuel consumption of the vehicle, wherein the operation state includes the remaining fuel, the vehicle speed and the driving mode, the first average fuel consumption is the average fuel consumption consumed by the vehicle when traveling a first preset mileage, and the second average fuel consumption is the average fuel consumption consumed by the vehicle when traveling a second preset mileage, and the length of the second preset mileage is greater than the length of the first preset mileage; determining a comprehensive fuel consumption of the vehicle based on the operating state, the first average fuel consumption, and the second average fuel consumption; Based on the comprehensive fuel consumption and the remaining fuel amount, the cruising range of the vehicle is determined.

2. The method according to claim 1, characterized in that The step of determining the comprehensive fuel consumption of the vehicle based on the operating state, the first average fuel consumption, and the second average fuel consumption includes: Determining a weighting factor according to the remaining fuel amount, determining a vehicle speed correction coefficient according to the vehicle speed, and determining a driving mode correction coefficient according to the driving mode; The first average fuel consumption, the second average fuel consumption and the weighted factor are weighted and then multiplied by the vehicle speed correction coefficient and the driving mode correction coefficient to determine the comprehensive fuel consumption of the vehicle.

3. The method according to claim 1, characterized in that The first average fuel consumption and the second average fuel consumption are obtained by the following steps: Determine a first unit distance, a second unit distance, a first unit fuel consumption, and a second unit fuel consumption in each sampling period, respectively, wherein the first unit distance is a distance traveled per unit time by the vehicle during the first preset mileage, the second unit distance is a distance traveled per unit time by the vehicle during the second preset mileage, the first unit fuel consumption is a fuel consumption per unit time by the vehicle during the first preset mileage, and the second unit fuel consumption is a fuel consumption per unit time by the vehicle during the second preset mileage; Based on the first unit distance, the first unit fuel consumption, the first average fuel consumption in the previous sampling period and the first preset mileage, the first average fuel consumption consumed by the vehicle for traveling the first preset mileage is determined; and based on the second unit distance, the second unit fuel consumption, the second average fuel consumption in the previous sampling period and the second preset mileage, the second average fuel consumption consumed by the vehicle for traveling the second preset mileage is determined.

4. The method according to claim 3, characterized in that The determining of the first unit distance, the second unit distance, the first unit fuel consumption, and the second unit fuel consumption includes: Obtaining the total driving time, total driving distance and total fuel consumption of the vehicle; If the total driving distance is less than or equal to the first preset mileage, the first unit distance, the second unit distance, the first unit fuel consumption and the second unit fuel consumption of the vehicle are determined according to the total driving time, the total driving distance and the total fuel consumption.

5. The method according to claim 3, characterized in that The determining of the first unit distance, the second unit distance, the first unit fuel consumption, and the second unit fuel consumption includes: Obtaining the total driving time, total driving distance, and total fuel consumption of the vehicle; if the total driving distance is greater than the first preset mileage and less than or equal to the second preset mileage, obtaining the first total time required for the vehicle's latest first preset mileage, the first total fuel consumption required for the latest first preset mileage, the total driving time, the total driving distance, and the total fuel consumption of the vehicle; The first unit distance and the first unit fuel consumption of the vehicle are determined based on the first total time, the first total fuel consumption and the first preset mileage, and the second unit distance and the second unit fuel consumption of the vehicle are determined based on the total driving time, the total driving distance and the total fuel consumption.

6. The method according to claim 3, characterized in that The determining of the first unit distance, the second unit distance, the first unit fuel consumption, and the second unit fuel consumption includes: Obtaining the total driving time, total driving distance and total fuel consumption of the vehicle; If the total driving distance is greater than the second preset mileage, obtaining a first total time required for the vehicle to most recently travel the first preset mileage, a first total fuel consumption required for the most recently traveled first preset mileage, a second total time required for the most recently traveled second preset mileage, and a second total fuel consumption required for the most recently traveled second preset mileage; The first unit distance and the first unit fuel consumption of the vehicle are determined based on the first total time, the first total fuel consumption and the first preset mileage, and the second unit distance and the second unit fuel consumption of the vehicle are determined based on the second total time, the second total fuel consumption and the second preset mileage.

7. The method according to claim 1, characterized in that Obtaining the remaining fuel amount of the vehicle, including: Acquiring a liquid level resistance signal of the vehicle's fuel tank and a slope signal of the vehicle; According to the liquid level resistance signal and the slope signal, a preset first relationship table is searched to determine a corrected resistance value, and according to the corrected resistance value, the remaining fuel amount of the vehicle is determined, wherein the preset first relationship table includes different resistance values ​​and corresponding corrected resistance values ​​at different slope values.

8. The method according to claim 1, characterized in that After determining the cruising range of the vehicle, the method further includes: Determine a fuel quantity percentage based on the remaining fuel quantity, and look up a preset first correspondence table according to the fuel quantity percentage to determine a filter coefficient, wherein the preset first correspondence table includes a correspondence relationship between the fuel quantity percentage and the filter coefficient; The cruising range is corrected according to the filter coefficient, and the corrected cruising range is displayed in the odometer of the vehicle.

9. A device for determining the fuel range of a hybrid vehicle, characterized in that: include: an acquisition module, configured to acquire, during vehicle operation, an operation state, a first average fuel consumption, and a second average fuel consumption of the vehicle, wherein the operation state includes a remaining fuel amount, a vehicle speed, and a driving mode, the first average fuel consumption is an average fuel consumption consumed by the vehicle when traveling a first preset mileage, and the second average fuel consumption is an average fuel consumption consumed by the vehicle when traveling a second preset mileage, wherein the length of the second preset mileage is greater than the length of the first preset mileage; a comprehensive fuel consumption determination module, configured to determine the comprehensive fuel consumption of the vehicle based on the operating state, the first average fuel consumption, and the second average fuel consumption; The cruising range determination module is used to determine the cruising range of the vehicle based on the comprehensive fuel consumption and the remaining fuel amount.

10. A vehicle, characterized in that: include: A memory, a processor, and a computer program stored in the memory and executable on the processor, wherein the processor implements the steps of the method according to any one of claims 1 to 8 when executing the program.

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