Hybrid electric vehicle endurance mileage calculation method and system and hybrid electric vehicle

Abstract

The invention discloses a hybrid electric vehicle endurance mileage calculation method and system and a hybrid electric vehicle. The hybrid electric vehicle endurance mileage calculation method comprises the steps that the initial endurance mileage in a pure oil mode when a vehicle is started is obtained; a vehicle driving mode is judged based on the current state of the vehicle, if the vehicle is in a hybrid mode, a mileage correction coefficient is obtained based on the first fuel quantity information and the corresponding driving mileage, and a first mileage reduction value is determined based on the mileage correction coefficient; if the vehicle is in the engine idling working condition mode, a second mileage reduction value in the engine idling working condition mode is obtained based on the second oil mass information and the average oil consumption information; and based on the initial endurance mileage, the first mileage reduction value and the second mileage reduction value, obtaining a residual endurance mileage, and displaying the residual endurance mileage. According to the method, the endurance display mileage value of the hybrid vehicle can be accurately obtained by combining the fuel consumption information under different working conditions.

Description

Technical Field

[0001] The present application relates to the field of cruising range calculation, and in particular to a hybrid vehicle cruising range calculation method, system and hybrid vehicle. Background Art

[0002] The driving range is a parameter that users pay great attention to when driving a car. It intuitively shows the approximate distance that the vehicle can continue to travel under the current remaining fuel conditions. It has a vital impact on itinerary planning, evaluating the timing of refueling, and the overall driving experience. This data is not only related to the user's travel convenience and sense of security, but also directly affects their satisfaction with the vehicle's performance and energy efficiency.

[0003] For hybrid vehicles, the remaining range in pure fuel mode is usually calculated based on the remaining fuel in the current tank and the average fuel consumption in the vehicle's historical driving history. The average fuel consumption is estimated based on the mileage the vehicle has traveled and the total fuel consumed during this period. This value varies under different operating conditions. Therefore, the average fuel consumption estimate is often difficult to fully and accurately reflect the actual situation, which leads to a certain deviation between the remaining range and the actual drivable distance.

[0004] Application Contents

[0005] The present application provides a hybrid vehicle range calculation method, system and hybrid vehicle, so as to accurately obtain the hybrid vehicle range display mileage value by combining fuel consumption information of different working conditions.

[0006] In a first aspect, the present application provides a method for calculating the range of a hybrid vehicle, comprising:

[0007] Get the initial cruising range in pure fuel mode when the vehicle is started;

[0008] Determining a driving mode of the vehicle based on a current state of the vehicle, and if the vehicle is in a hybrid mode, obtaining a mileage correction coefficient based on the first fuel quantity information and a corresponding driving mileage, and determining a first mileage reduction value based on the mileage correction coefficient;

[0009] If the vehicle is in the engine idle working mode, a second mileage reduction value in the engine idle working mode is obtained based on the second fuel quantity information and the average fuel consumption information;

[0010] Based on the initial cruising range, the first mileage reduction value and the second mileage reduction value, a remaining cruising range is obtained, and the remaining cruising range is displayed.

[0011] The embodiment of the present application can facilitate the subsequent calculation of the remaining cruising range by obtaining the initial cruising range in the pure oil mode when the vehicle is started; by obtaining the first oil quantity information of the vehicle hybrid mode and the corresponding driving mileage, the mileage correction coefficient can be accurately obtained, which can ensure that the first mileage reduction value in the hybrid mode is accurately obtained; by obtaining the second oil quantity information in the engine idle mode, the second mileage reduction value in the engine idle mode can be accurately obtained; based on the initial cruising range, the first mileage reduction value and the second mileage reduction value, the remaining cruising range of the hybrid vehicle pure oil can be accurately obtained in combination with the hybrid mode and the engine idle mode. Compared with the prior art, the present application can accurately obtain the hybrid vehicle cruising range display mileage value in combination with the fuel consumption information of different working conditions by judging the vehicle driving mode and obtaining the fuel consumption of the corresponding driving mode.

[0012] Furthermore, before obtaining the initial cruising range in the pure fuel mode when the vehicle is started, the method further includes:

[0013] Determine whether the fuel level in the vehicle's fuel tank has increased;

[0014] If the fuel level in the fuel tank increases, the initial cruising range is determined based on the current fuel level information and the average fuel consumption information.

[0015] In this way, by obtaining the initial cruising range in pure fuel mode when the vehicle is started, the subsequent calculation of the remaining cruising range can be facilitated.

[0016] Furthermore, the mileage correction coefficient is obtained based on the first fuel quantity information and the corresponding mileage, specifically:

[0017] Obtaining a first fuel injection amount integral of the engine, and determining third fuel amount information based on the first fuel injection amount integral;

[0018] Determining the first oil quantity information based on the initial oil quantity information, the third oil quantity information and a preset safety oil quantity;

[0019] Based on the first fuel quantity information, determining the corresponding mileage;

[0020] A linear fit is performed on the first fuel quantity information and the mileage to obtain a mileage correction coefficient.

[0021] In this way, by acquiring the first fuel quantity information of the vehicle in the hybrid mode and the corresponding mileage, the mileage correction coefficient can be accurately obtained, which can ensure that the first mileage reduction value in the hybrid mode is accurately obtained.

[0022] Furthermore, the determining the corresponding mileage based on the first fuel quantity information is specifically as follows:

[0023] Obtaining a first theoretical cruising range based on the first fuel quantity information and the announced fuel consumption;

[0024] Obtaining a second theoretical cruising range based on the first fuel quantity information and the average fuel consumption information;

[0025] Determining a third theoretical cruising range based on the first theoretical cruising range and the second theoretical cruising range;

[0026] The driving mileage is obtained based on the initial cruising range and the third theoretical cruising range.

[0027] In this way, the mileage correction factor can be accurately obtained by combining the announced fuel consumption and the average fuel consumption information, which can ensure that the first mileage reduction value in the hybrid mode is accurately obtained.

[0028] Furthermore, the calculation formula for determining the first mileage reduction value based on the mileage correction coefficient is specifically:

[0029] The first mileage reduction value=the driving mileage-the driving mileage*1KM*the mileage correction coefficient.

[0030] Furthermore, based on the second fuel quantity information and the average fuel consumption information, the second mileage reduction value in the engine idle working mode is obtained, specifically:

[0031] Acquire a second fuel injection amount integral of the engine, and determine the second fuel amount information based on the second fuel injection amount integral;

[0032] If the second fuel quantity information meets a preset fuel consumption threshold, a linear fit is performed on the second fuel quantity information and the average fuel consumption information to obtain the second mileage reduction value.

[0033] In this way, by acquiring the second fuel quantity information under the engine idle working mode, the second mileage reduction value under the engine idle working mode can be accurately obtained.

[0034] Furthermore, the hybrid vehicle range calculation method further includes:

[0035] If the reduction in the initial cruising range meets a preset mileage threshold or the vehicle key is powered off, the remaining cruising range is updated.

[0036] In a second aspect, the present application further provides a hybrid vehicle range calculation system, comprising: an acquisition module, a first calculation module, a second calculation module and a third calculation module;

[0037] The acquisition module is used to acquire the initial cruising range in the pure fuel mode when the vehicle is started;

[0038] The first calculation module is used to determine the vehicle driving mode based on the current state of the vehicle, and if the vehicle is in the hybrid mode, obtain a mileage correction coefficient based on the first fuel amount information and the corresponding mileage, and determine the first mileage reduction value based on the mileage correction coefficient;

[0039] The second calculation module is used for obtaining a second mileage reduction value in the engine idle working mode based on the second fuel quantity information and the average fuel consumption information if the vehicle is in the engine idle working mode;

[0040] The third calculation module is used to obtain the remaining cruising range based on the initial cruising range, the first mileage reduction value and the second mileage reduction value, and display the remaining cruising range.

[0041] The embodiment of the present application can facilitate the subsequent calculation of the remaining cruising range by obtaining the initial cruising range in the pure oil mode when the vehicle is started; by obtaining the first oil quantity information of the vehicle hybrid mode and the corresponding driving mileage, the mileage correction coefficient can be accurately obtained, which can ensure that the first mileage reduction value in the hybrid mode is accurately obtained; by obtaining the second oil quantity information in the engine idle mode, the second mileage reduction value in the engine idle mode can be accurately obtained; based on the initial cruising range, the first mileage reduction value and the second mileage reduction value, the remaining cruising range of the hybrid vehicle pure oil can be accurately obtained in combination with the hybrid mode and the engine idle mode. Compared with the prior art, the present application can accurately obtain the hybrid vehicle cruising range display mileage value in combination with the fuel consumption information of different working conditions by judging the vehicle driving mode and obtaining the fuel consumption of the corresponding driving mode.

[0042] On the third aspect, the present application also provides a hybrid vehicle, which uses the hybrid vehicle range calculation method described in the present application to calculate the range.

[0043] Furthermore, the hybrid vehicle includes an engine, a drive motor, a power battery pack, an engine controller connected to the engine, a motor controller connected to the drive motor, a battery management system connected to the power battery pack, and a vehicle controller, and the vehicle controller is connected to the engine controller, the motor controller, and the battery management system. BRIEF DESCRIPTION OF THE DRAWINGS

[0044] Figure 1 It is a flow chart of an embodiment of a hybrid vehicle range method provided by the present application;

[0045] Figure 2 is a schematic diagram of linear fitting of first fuel quantity information and mileage provided by the present application;

[0046] Figure 3is a schematic diagram of linear fitting of the second fuel quantity information and the average fuel consumption information provided by the present application;

[0047] Figure 4 It is a structural schematic diagram of an embodiment of a hybrid vehicle range system provided by the present application;

[0048] Figure 5 It is a structural schematic diagram of an embodiment of a hybrid vehicle provided by the present application. DETAILED DESCRIPTION

[0049] The following will be combined with the drawings in the embodiments of the present application to clearly and completely describe the technical solutions in the embodiments of the present application. Obviously, the described embodiments are only part of the embodiments of the present application, not all of the embodiments. Based on the embodiments in the present application, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of this application.

[0050] It should be understood that the step numbers used in this article are only for the convenience of description and are not intended to limit the order in which the steps are executed.

[0051] It should be understood that the terms used in the present specification are only for the purpose of describing specific embodiments and are not intended to limit the present invention. As used in the present specification and the appended claims, the singular forms "a", "an" and "the" are intended to include plural forms unless the context clearly indicates otherwise.

[0052] The terms “include” and “comprising” indicate the presence of described features, integers, steps, operations, elements and / or components, but do not exclude the presence or addition of one or more other features, integers, steps, operations, elements, components and / or combinations thereof.

[0053] The term "and / or" means and includes any and all possible combinations of one or more of the associated listed items.

[0054] The cruising range is an important parameter for users when driving a car. It directly reflects the distance that the vehicle can travel with the remaining fuel, and has a vital impact on trip planning, refueling timing and driving experience. The remaining cruising range of a hybrid car in pure fuel mode is estimated based on the remaining fuel and average fuel consumption. The average fuel consumption is calculated based on the mileage and fuel consumption, which varies under different driving conditions. Therefore, it is difficult to fully and accurately reflect the actual situation, which leads to a certain deviation between the remaining cruising range and the actual drivable distance.

[0055] Next, the nouns involved in this application are analyzed:

[0056] Hybrid vehicle, full name Hybrid Vehicle, refers to a vehicle whose driving system is composed of two or more driving systems that can operate simultaneously. In simple terms, it refers to a vehicle with two or more power sources, also called a composite vehicle. Its power source includes traditional internal combustion engines and new energy systems such as electric motors, batteries, fuel cells, and solar cells. The working principle is that according to the actual driving state of the vehicle, a single driving system alone or together provides the vehicle's driving power.

[0057] Hybrid Mode is a vehicle driving mode that combines the technologies of two or more energy types (such as internal combustion engines, battery-driven electric motors or other renewable energy sources). In hybrid mode, the vehicle's driving performance and fuel economy can be optimized, thereby reducing fuel consumption and emissions.

[0058] The engine idle mode is a working state of the car, which means that the engine is running at no load or low load, the speed is kept at the lowest stable speed, and no power is output. The idle mode is mainly used to power various electrical equipment of the car and keep the engine running.

[0059] Based on this, the embodiments of the present application provide a hybrid vehicle range calculation method, system and hybrid vehicle, which can accurately obtain the hybrid vehicle range display mileage value by combining fuel consumption information under different working conditions.

[0060] A hybrid vehicle range calculation method, system and hybrid vehicle provided in the embodiments of the present application are specifically described through the following embodiments. First, the hybrid vehicle range calculation method in the embodiments of the present application is described.

[0061] The hybrid vehicle range calculation method provided in the embodiment of the present application relates to the field of range calculation. The hybrid vehicle range calculation method provided in the embodiment of the present application can be applied to a terminal, can be applied to a server, or can be software running in a terminal or a server. In some embodiments, the terminal can be a smart phone, a tablet computer, a laptop computer, a desktop computer, etc.; the server can be configured as an independent physical server, or a server cluster or a distributed system composed of multiple physical servers, or a cloud server that provides basic cloud computing services such as cloud services, cloud databases, cloud computing, cloud functions, cloud storage, network services, cloud communications, middleware services, domain name services, security services, CDN, and big data and artificial intelligence platforms; the software can be an application that implements a hybrid vehicle range calculation method, etc., but is not limited to the above forms.

[0062] The present application can also be used in numerous general or special computer system environments or configurations. For example: personal computers, server computers, handheld or portable devices, tablet devices, multiprocessor systems, microprocessor-based systems, set-top boxes, programmable consumer electronics, network PCs, minicomputers, mainframe computers, distributed computing environments including any of the above systems or devices, etc. The present application can be described in the general context of computer executable instructions executed by a computer, such as program modules. Generally, program modules include routines, programs, objects, components, data structures, etc. that perform specific tasks or implement specific abstract data types. The present application can also be practiced in distributed computing environments, in which tasks are performed by remote processing devices connected through a communication network. In a distributed computing environment, program modules can be located in local and remote computer storage media including storage devices.

[0063] Embodiment 1

[0064] Please refer to Figure 1 , Figure 1 It is a flowchart of an embodiment of a hybrid vehicle range method provided by the present application, including steps S101 to S104;

[0065] Step S101, obtaining the initial cruising range in pure fuel mode when the vehicle is started;

[0066] It is understandable that when the vehicle is started, the initial cruising range saved at the time of power-off is read from the storage or memory. Each time the vehicle is powered off, the current cruising range information is saved in the storage or memory for reading when the vehicle is powered on.

[0067] It is understandable that when the vehicle triggers refueling, the initial cruising range is the cruising range displayed after refueling, so the process of determining the initial cruising range is: determine whether the fuel level in the vehicle's fuel tank has increased; if the fuel level in the fuel tank has increased, determine the initial cruising range based on the current fuel level information and the average fuel consumption information. Specifically, first, the fuel tank is detected by a sensor, and when it is determined that the fuel level in the fuel tank is increasing, the current fuel level information after refueling is obtained, and the cruising range is calculated based on the current fuel level information and the vehicle's average fuel consumption, and the cruising range is displayed to the driver as the initial cruising range.

[0068] It should be noted that the average fuel consumption is calculated based on the fuel consumption and mileage in a preset time period. The calculation formula is: Average fuel consumption = fuel consumption (liters) ÷ mileage (km) × 100. After the average fuel consumption is calculated, the average fuel consumption is stored in the storage or memory so that the mileage can be updated after refueling.

[0069] In this way, by obtaining the initial cruising range in pure fuel mode when the vehicle is started, the subsequent calculation of the remaining cruising range can be facilitated.

[0070] Step S102, judging the driving mode of the vehicle based on the current state of the vehicle, and if the vehicle is in the hybrid mode, obtaining a mileage correction coefficient based on the first fuel quantity information and the corresponding driving mileage, and determining a first mileage reduction value based on the mileage correction coefficient;

[0071] It can be understood that the current state of the vehicle can be obtained by observing the dashboard, monitoring the sound of the engine and feeling the vibration of the vehicle. Among them, the vehicle's hybrid mode indicator light, power flow and engine speed in the dashboard can be observed to determine the vehicle's driving mode.

[0072] In some embodiments, by judging the hybrid mode indicator light on the vehicle dashboard and the flow of power flow, it is possible to intuitively determine whether the current vehicle state is in hybrid mode or engine idle mode.

[0073] In some embodiments, it is necessary to monitor whether the engine has been started through an engine speed sensor or other related sensors, and then set a speed threshold to determine the vehicle's driving mode. When the vehicle speed is greater than the preset speed threshold, it means that it is not in a low-speed or idle condition, and the vehicle's driving mode is judged to be a hybrid mode. When the vehicle speed is less than the preset threshold and there is no additional power demand (such as acceleration and climbing, etc.), it is judged that the vehicle is in the engine idle condition mode.

[0074] It should be noted that if the vehicle is running in pure electric mode, the pure oil range will remain unchanged.

[0075] It can be understood that if the vehicle is in hybrid mode, it is necessary to obtain the first fuel injection quantity integral of the engine, and determine the third fuel quantity information based on the first fuel injection quantity integral; determine the first fuel quantity information based on the initial fuel quantity information, the third fuel quantity information and the preset safety fuel quantity; determine the corresponding mileage based on the first fuel quantity information; perform linear fitting on the first fuel quantity information and the mileage to obtain a mileage correction coefficient. Specifically, first, the amount of fuel injected each time is obtained through the engine control unit (ECU), and the integral of the first fuel injection amount in a preset time period is calculated by integral accumulation, and the first fuel injection amount integral is multiplied by the conversion coefficient to obtain the actual third fuel amount information, wherein the conversion coefficient is determined based on factors such as fuel density and injection efficiency; secondly, the initial fuel amount information of the vehicle is obtained, and the first fuel amount information is determined by the formula of initial fuel amount information - third fuel amount information - preset safety fuel amount = first fuel amount information, wherein the first fuel amount information is the remaining available fuel amount; thirdly, the mileage is obtained by calculating the first fuel amount information with the announced fuel consumption or the average fuel consumption; finally, the first fuel amount information and the mileage are linearly fitted to obtain a linear relationship between the two variables, that is, a mileage correction coefficient, wherein a schematic diagram of the linear fitting of the first fuel amount information and the mileage is shown as follows Figure 2 shown.

[0076] It should be noted that the first, second or third do not indicate the order of precedence, but are only used to distinguish the same terms from different sources. The first, second or third can be understood as names. Among them, the first fuel quantity information is the remaining available fuel quantity when the vehicle is in hybrid mode, the second fuel quantity information is the remaining available fuel quantity when the vehicle is in engine idle mode, and the third fuel quantity information is the actual fuel consumption of the vehicle in hybrid mode.

[0077] It should be noted that the preset safety oil volume is the unusable oil volume in the tank and can be freely set according to actual needs.

[0078] In some embodiments, based on the first fuel quantity information, the corresponding mileage is determined, including: obtaining a first theoretical cruising range based on the first fuel quantity information and the announced fuel consumption; obtaining a second theoretical cruising range based on the first fuel quantity information and the average fuel consumption information; determining a third theoretical cruising range based on the first theoretical cruising range and the second theoretical cruising range; and obtaining the mileage based on the initial cruising range and the third theoretical cruising range. Specifically, first, the announced fuel consumption is obtained from the information disclosed by the vehicle manufacturer, and the first theoretical cruising range is calculated by dividing the first fuel quantity information (in L) by the announced fuel consumption (in L / 100km), and then multiplying by 100 (converting the fuel consumption unit to kilometers / liter); secondly, the second theoretical cruising range is calculated by dividing the first fuel quantity information (in L) by the average fuel consumption information (in L / 100km), and then multiplying by 100 (converting the fuel consumption unit to kilometers / liter); then, the first theoretical cruising range and the second theoretical cruising range are compared, and the smaller value is determined as the third theoretical cruising range; finally, the initial cruising range on the vehicle dashboard is subtracted from the third theoretical cruising range to obtain the mileage.

[0079] In this way, the mileage correction factor can be accurately obtained by combining the announced fuel consumption and the average fuel consumption information, which can ensure that the first mileage reduction value in the hybrid mode is accurately obtained.

[0080] In some embodiments, linear fitting of the first fuel quantity information and the driving mileage includes: dividing the remaining fuel quantity from 0% to 97% into 15 parts, and dividing the difference in cruising range from -490 to +490 into 15 parts, where there are 10 parts of positive deviation, 4 parts of negative deviation, and 1 part of zero deviation. The range of negative deviation is: from -490 to -98 (a total of 4 parts, with each part interval being an integer multiple of 4 - 490 - (-98) = -98), the range of zero deviation is: 1 part (the driving mileage is equal to 0), and the range of positive deviation is: from 98 to 490 (a total of 10 parts, with each part interval being an integer multiple of 10 490 - 98 = 39.2, and for convenience, it can be rounded or rounded to the nearest integer or reasonable decimal). According to the given principle, a correction coefficient can be assigned to each combination of fuel quantity percentage and difference in cruising range. (1) When there is a positive deviation (the actual fuel consumption is greater than the announced fuel consumption): the mileage correction coefficient starts from 1 and increases as the positive deviation increases, with a maximum of 4. The lower the fuel quantity, the faster the first mileage reduction value needs to be corrected closer to the driving mileage, and the faster the mileage correction coefficient increases (that is, the speed at which the mileage correction coefficient increases accelerates as the fuel quantity decreases). (2) When there is a negative deviation (the actual fuel consumption is less than the announced fuel consumption): the mileage correction coefficient starts from 1 and decreases as the negative deviation increases, with a minimum of 0.25. When the fuel quantity is lower, the faster the first mileage reduction value needs to be corrected closer to the driving mileage, and the faster the mileage correction coefficient decreases (that is, the speed at which the mileage correction coefficient decreases accelerates as the fuel quantity decreases). (3) When there is a zero deviation: the mileage correction coefficient is 1 (no correction is required). Therefore, based on the linear fitting, the mileage correction coefficient odo_fac is obtained, and the value range of odo_fac is 0.25 < odo_fac < 4, that is, for every 1 km of actual driving mileage, the updated displayed mileage decreases by at least 0.25 km and at most 4 km.

[0081] It can be understood that after obtaining the mileage correction coefficient odo_fac, it is necessary to determine the first mileage reduction value based on the mileage correction coefficient, and its calculation formula is: the first mileage reduction value = the driving mileage - the driving mileage * 1KM * the mileage correction coefficient.

[0082] Step S103, if the vehicle is in the engine idle condition mode, then based on the second fuel quantity information and the average fuel consumption information, obtain the second mileage reduction value in the engine idle condition mode;

[0083] It can be understood that if the vehicle is in the engine idle mode, it is necessary to determine the second mileage reduction value under this condition, including: obtaining the second fuel injection amount integral of the engine, and determining the second fuel amount information based on the second fuel injection amount integral; if the second fuel amount information meets the preset fuel consumption threshold, the second fuel amount information and the average fuel consumption information are linearly fitted to obtain the second mileage reduction value. Specifically, first, the vehicle's fuel injection amount is obtained each time through the engine control unit (ECU), and the second fuel injection amount integral for a preset time period is calculated by integral accumulation, and the second fuel injection amount integral is multiplied by the conversion coefficient to obtain the actual second fuel amount information, wherein the conversion coefficient is determined based on factors such as fuel density and injection efficiency; secondly, it is determined whether the second fuel amount information satisfies the preset fuel consumption threshold. If the preset threshold is met, the second fuel amount information and the average fuel consumption information are linearly fitted to obtain the linear relationship between the two variables, and then the second mileage reduction value is determined; wherein, the schematic diagram of the linear fitting of the second fuel amount information and the average fuel consumption information is shown as follows Figure 3 shown.

[0084] In some embodiments, when the second fuel quantity information satisfies the preset fuel consumption threshold, the fourth theoretical cruising range can be calculated based on the announced fuel consumption and the second fuel quantity information, and the remaining cruising range can be updated, that is, the second mileage reduction value under the engine idle mode is calculated. For example, when the announced fuel consumption is 5L / 100km, when the fuel quantity is reduced by 0.025L, the fourth theoretical cruising range is 0.5km (20km / L*0.025L=0.5km).

[0085] In some embodiments, the second fuel quantity information and the average fuel consumption information are linearly fitted, including: dividing the remaining fuel quantity from 0% to 97% into 15 parts evenly, and dividing the average fuel consumption from 1L / 100km to 15L / 100km into 15 parts evenly, and then, based on the fourth theoretical cruising range calculated from the announced fuel consumption and the second fuel quantity information, when the average fuel consumption is higher than the announced fuel consumption, the second mileage reduction value should be less than the fourth theoretical cruising range, and as the average fuel consumption increases, the second mileage reduction value should gradually decrease; when the average fuel consumption is lower than the announced fuel consumption, the second mileage reduction value should be greater than the fourth theoretical cruising range, and as the average fuel consumption decreases, the second mileage reduction value should gradually increase; when the second fuel quantity information is higher, the allowed idle time is longer, so the second mileage reduction value is closer to the fourth theoretical cruising range; when the second fuel quantity information is lower, the allowed idle time is shorter, so the second mileage reduction value should decrease faster to reflect the rapid consumption of fuel. Based on the above relationship, an adjustment factor is determined to control the influence of the average fuel consumption on the second mileage reduction value, that is, the second mileage reduction value = the fourth theoretical cruising range × the adjustment factor.

[0086] In this way, by acquiring the second fuel quantity information under the engine idle working mode, the second mileage reduction value under the engine idle working mode can be accurately obtained.

[0087] Step S104, obtaining a remaining cruising range based on the initial cruising range, the first mileage reduction value and the second mileage reduction value, and displaying the remaining cruising range.

[0088] It is understandable that since the remaining cruising range can only decrease and not increase, the remaining cruising range can be obtained through the calculation formula of remaining cruising range = initial cruising range - first mileage reduction value - second mileage reduction value, and the remaining cruising range can be displayed on the dashboard.

[0089] In some embodiments, the hybrid vehicle cruising range calculation method further includes: if the reduction in the initial cruising range meets a preset mileage threshold or the vehicle key is powered off, the remaining cruising range is updated. Specifically, when the reduction in the initial cruising range exceeds the preset threshold, that is, the vehicle travels beyond the preset mileage threshold, the remaining cruising range needs to be updated to be displayed to the driver, so that the driver can arrange a driving or refueling plan according to the remaining cruising range. When the vehicle key is powered off, it means that the current driving is completed, and the remaining cruising range needs to be stored so that the driver can directly understand the current remaining cruising range when the driver takes the vehicle next time.

[0090] It should be noted that the preset mileage threshold can be set freely and is not limited in this application.

[0091] The embodiment of the present application can facilitate the subsequent calculation of the remaining cruising range by obtaining the initial cruising range in the pure oil mode when the vehicle is started; by obtaining the first oil quantity information of the vehicle hybrid mode and the corresponding driving mileage, the mileage correction coefficient can be accurately obtained, which can ensure that the first mileage reduction value in the hybrid mode is accurately obtained; by obtaining the second oil quantity information in the engine idle mode, the second mileage reduction value in the engine idle mode can be accurately obtained; based on the initial cruising range, the first mileage reduction value and the second mileage reduction value, the remaining cruising range of the hybrid vehicle pure oil can be accurately obtained in combination with the hybrid mode and the engine idle mode. Compared with the prior art, the present application can accurately obtain the hybrid vehicle cruising range display mileage value in combination with the fuel consumption information of different working conditions by judging the vehicle driving mode and obtaining the fuel consumption of the corresponding driving mode.

[0092] Embodiment 2

[0093] Please refer to Figure 4 , Figure 4It is a structural schematic diagram of an embodiment of a hybrid vehicle cruising range system provided by the present application, comprising: an acquisition module 100, a first calculation module 200, a second calculation module 300 and a third calculation module 400;

[0094] The acquisition module 100 is used to acquire the initial cruising range in the pure fuel mode when the vehicle is started;

[0095] The first calculation module 200 is used to determine the vehicle driving mode based on the current state of the vehicle, and if the vehicle is in the hybrid mode, obtain a mileage correction coefficient based on the first fuel amount information and the corresponding mileage, and determine the first mileage reduction value based on the mileage correction coefficient;

[0096] The second calculation module 300 is used to obtain a second mileage reduction value in the engine idle working mode based on the second fuel quantity information and the average fuel consumption information if the vehicle is in the engine idle working mode;

[0097] The third calculation module 400 is used to obtain the remaining cruising range based on the initial cruising range, the first mileage reduction value and the second mileage reduction value, and display the remaining cruising range.

[0098] The information interaction, execution process, etc. between the modules in the above hybrid vehicle range calculation system are based on the same concept as the embodiment of the hybrid vehicle range calculation method of the first aspect of the present invention, and the technical effects achieved are basically the same. For specific contents, please refer to the description in the first embodiment of the method of the present invention, and will not be repeated here.

[0099] Embodiment 3

[0100] Please refer to Figure 5 , Figure 5 It is a structural schematic diagram of a hybrid vehicle provided in the present application, including calculating the driving range using the hybrid vehicle driving range calculation method described in Example 1 of the present application.

[0101] It can be understood that the hybrid vehicle comprises an engine (1), a drive motor (2), a power battery pack (3), an engine controller (4) connected to the engine (1), a motor controller (5) connected to the drive motor (2), a battery management system (6) connected to the power battery pack (3) and a vehicle controller (7), wherein the vehicle controller (7) is connected to the engine controller (4), the motor controller (5) and the battery management system (6).

[0102] The device embodiments described above are merely illustrative, wherein the modules described as separate components may or may not be physically separated, i.e., may be located in one place, or may be distributed to multiple network units. Some or all of the units may be selected according to actual needs to achieve the purpose of the method of this embodiment.

[0103] A person skilled in the art can understand that all or part of the processes in the above-mentioned embodiments can be implemented by instructing the relevant hardware through a computer program, and the program can be stored in a computer-monitorable storage medium, and when the program is executed, it can include the processes of the embodiments of the above-mentioned methods. The storage medium can be a disk, an optical disk, a read-only memory (ROM) or a random access memory (RAM), etc.

[0104] The specific embodiments described above further illustrate the purpose, technical solutions and beneficial effects of the present application in detail. It should be understood that the above description is only a specific embodiment of the present application and is not intended to limit the scope of protection of the present application.

[0105] It is particularly pointed out that for those skilled in the art, any modifications, equivalent substitutions, improvements, etc. made within the spirit and principles of this application should be included in the protection scope of this application.

Claims

1. A method for calculating the cruising range of a hybrid vehicle, characterized in that: include: Get the initial cruising range in pure fuel mode when the vehicle is started; Determining a driving mode of the vehicle based on a current state of the vehicle, and if the vehicle is in a hybrid mode, obtaining a mileage correction coefficient based on the first fuel quantity information and a corresponding driving mileage, and determining a first mileage reduction value based on the mileage correction coefficient; If the vehicle is in the engine idle working mode, a second mileage reduction value in the engine idle working mode is obtained based on the second fuel quantity information and the average fuel consumption information; Based on the initial cruising range, the first mileage reduction value and the second mileage reduction value, a remaining cruising range is obtained, and the remaining cruising range is displayed.

2. The hybrid vehicle range calculation method according to claim 1, characterized in that: Before obtaining the initial cruising range in the pure fuel mode when the vehicle is started, the method further includes: Determine whether the fuel level in the vehicle's fuel tank has increased; If the fuel level in the fuel tank increases, the initial cruising range is determined based on the current fuel level information and the average fuel consumption information.

3. The hybrid vehicle range calculation method according to claim 1, characterized in that: The mileage correction coefficient is obtained based on the first fuel quantity information and the corresponding mileage, specifically: Obtaining a first fuel injection amount integral of the engine, and determining third fuel amount information based on the first fuel injection amount integral; Determining the first oil quantity information based on the initial oil quantity information, the third oil quantity information and a preset safety oil quantity; Based on the first fuel quantity information, determining the corresponding mileage; A linear fit is performed on the first fuel quantity information and the mileage to obtain a mileage correction coefficient.

4. The hybrid vehicle range calculation method according to claim 3, characterized in that: The determining the corresponding mileage based on the first fuel quantity information is specifically: Obtaining a first theoretical cruising range based on the first fuel quantity information and the announced fuel consumption; Obtaining a second theoretical cruising range based on the first fuel quantity information and the average fuel consumption information; Determining a third theoretical cruising range based on the first theoretical cruising range and the second theoretical cruising range; The driving mileage is obtained based on the initial cruising range and the third theoretical cruising range.

5. The hybrid vehicle range calculation method according to claim 4, characterized in that: The calculation formula for determining the first mileage reduction value based on the mileage correction coefficient is specifically: The first mileage reduction value=the driving mileage-the driving mileage*1KM*the mileage correction coefficient.

6. The hybrid vehicle range calculation method according to claim 1, characterized in that: The second mileage reduction value in the engine idle working mode is obtained based on the second fuel quantity information and the average fuel consumption information, specifically: Acquire a second fuel injection amount integral of the engine, and determine the second fuel amount information based on the second fuel injection amount integral; If the second fuel quantity information meets a preset fuel consumption threshold, a linear fit is performed on the second fuel quantity information and the average fuel consumption information to obtain the second mileage reduction value.

7. The hybrid vehicle range calculation method according to claim 1, characterized in that: Also includes: If the reduction in the initial cruising range meets a preset mileage threshold or the vehicle key is powered off, the remaining cruising range is updated.

8. A hybrid vehicle range calculation system, characterized in that: include: An acquisition module, a first calculation module, a second calculation module and a third calculation module; The acquisition module is used to acquire the initial cruising range in the pure fuel mode when the vehicle is started; The first calculation module is used to determine the vehicle driving mode based on the current state of the vehicle, and if the vehicle is in the hybrid mode, obtain a mileage correction coefficient based on the first fuel amount information and the corresponding mileage, and determine the first mileage reduction value based on the mileage correction coefficient; The second calculation module is used for obtaining a second mileage reduction value in the engine idle working mode based on the second fuel quantity information and the average fuel consumption information if the vehicle is in the engine idle working mode; The third calculation module is used to obtain the remaining cruising range based on the initial cruising range, the first mileage reduction value and the second mileage reduction value, and display the remaining cruising range.

9. A hybrid vehicle, characterized in that: The driving range is calculated using the hybrid vehicle driving range calculation method as described in any one of claims 1 to 7.

10. The hybrid vehicle according to claim 9, characterized in that: The hybrid vehicle includes an engine, a drive motor, a power battery pack, an engine controller connected to the engine, a motor controller connected to the drive motor, a battery management system connected to the power battery pack, and a vehicle controller, wherein the vehicle controller is connected to the engine controller, the motor controller, and the battery management system.

Images