Electric vehicle endurance mileage calculation method, device and equipment and storage medium

Abstract

The invention discloses an electric vehicle endurance mileage calculation method, device and equipment and a storage medium, and relates to the technical field of electric vehicles. Operation information and historical display endurance mileage of an electric vehicle are obtained; obtaining an endurance mileage basic value and a vehicle driving flag bit according to the operation information; according to the operation information, the historical display endurance mileage, the endurance mileage basic value and the vehicle driving flag bit, the target display endurance mileage is obtained, the problem of how to accurately calculate the endurance mileage to be displayed by the electric vehicle is solved, and the calculation precision and the display accuracy of the endurance mileage of the electric vehicle are improved.

Description

Technical Field

[0001] The present application relates to the technical field of electric vehicles, and in particular to a method, device, equipment and storage medium for calculating the cruising range of an electric vehicle. Background Art

[0002] With the increasing global attention to environmental protection and energy conservation, electric vehicles have gradually become the mainstream trend in the automotive market due to their many advantages such as energy saving, high efficiency, low or zero emissions, low noise, fast acceleration and low operating costs. With the continuous advancement of technology and the increasing acceptance of electric vehicles by consumers, the electric vehicle market has shown a rapid growth trend. Major automobile OEMs have increased their R&D efforts and are committed to improving the performance and user experience of electric vehicles.

[0003] Among the many performance indicators of electric vehicles, driving range is one of the factors that consumers care about most. Due to the range anxiety of electric vehicles, that is, the uncertainty of users about the remaining driving range of the vehicle, in actual use, they often need to pay attention to the battery level and remaining range frequently, which affects the driving experience and satisfaction.

[0004] Therefore, how to accurately calculate the range that an electric vehicle should display is a problem that urgently needs to be solved. Summary of the invention

[0005] The main purpose of this application is to provide a method, device, equipment and storage medium for calculating the cruising range of an electric vehicle, aiming to solve the technical problem of how to accurately calculate the cruising range that an electric vehicle should display.

[0006] To achieve the above purpose, the present application proposes a method for calculating the cruising range of an electric vehicle, the method comprising:

[0007] Get the operation information and historical mileage of electric vehicles;

[0008] Obtaining a basic value of cruising range and a vehicle driving flag according to the operating information;

[0009] The target displayed cruising range is obtained according to the operating information, the historical displayed cruising range, the cruising range base value and the vehicle driving flag.

[0010] In one embodiment, the operation information includes a PEPS button start request, a vehicle speed, a battery level, a battery health, a total mileage, a PTC operation flag, an ambient temperature, and an air conditioning operation flag; and the step of obtaining a cruising range base value and a vehicle driving flag according to the operation information includes:

[0011] Get the key duration;

[0012] Determine a vehicle driving flag position according to the PEPS button start request, the vehicle speed and the button duration;

[0013] Obtaining a battery health correction coefficient according to the PEPS button start request, the battery health, and the total mileage;

[0014] Obtaining a low temperature correction coefficient according to the vehicle driving flag, the PTC working flag and the ambient temperature;

[0015] Obtaining a high-temperature cruising range correction value according to the vehicle driving flag, the air conditioning working flag and the ambient temperature;

[0016] A basic cruising range value is obtained according to the battery power, the battery health correction coefficient, the low temperature correction coefficient and the high temperature cruising range correction value.

[0017] In one embodiment, the step of obtaining a battery health correction coefficient according to the PEPS button start request, the battery health, and the total mileage includes:

[0018] Obtaining an average battery health based on the PEPS key start request;

[0019] Obtaining a first battery health according to the battery health and the average battery health;

[0020] Obtaining a second battery health status according to the total driving mileage;

[0021] A battery health correction coefficient is obtained according to the total driving mileage, the first battery health and the second battery health.

[0022] In one embodiment, the step of obtaining the low temperature correction coefficient according to the vehicle driving flag, the PTC working flag and the ambient temperature comprises:

[0023] Determine a first low temperature correction coefficient and a second low temperature correction coefficient according to the ambient temperature;

[0024] A low temperature correction coefficient is obtained according to the vehicle driving flag, the PTC working flag, the first low temperature correction coefficient and the second low temperature correction coefficient.

[0025] In one embodiment, the operation information includes a PEPS button start request, a battery charge, and a total mileage; and the step of obtaining a target displayed cruising range according to the operation information, the historical displayed cruising range, the cruising range base value, and the vehicle driving flag position includes:

[0026] According to the PEPS key start request, the storage battery power, the storage total mileage and the time count short flag are obtained;

[0027] Obtaining a reference cruising range according to the battery power, the total mileage, the historical displayed cruising range, the stored battery power, the stored total mileage, the time count short flag, the cruising range base value, and the vehicle driving flag;

[0028] A target displayed cruising range is obtained according to the historical displayed cruising range, the time counting short flag and the reference cruising range.

[0029] In one embodiment, the step of obtaining a reference cruising range according to the battery power, the total mileage, the historical displayed cruising range, the stored battery power, the stored total mileage, the time count short flag, the cruising range base value, and the vehicle driving flag comprises:

[0030] Determine the state of the first flag bit of the cruising range according to the battery power, the stored battery power, the total mileage, the stored total mileage, the basic value of the cruising range, the historical displayed cruising range, and the time count short flag bit;

[0031] Determine a reference cruising range flag state according to the total mileage, the historical displayed cruising range, the vehicle driving flag, and the cruising range first flag state;

[0032] The reference cruising range is determined according to the reference cruising range flag status.

[0033] In one embodiment, the step of obtaining a target displayed cruising range according to the historical displayed cruising range, the time count short flag, and the reference cruising range includes:

[0034] Obtaining a cruising range change value and a cruising range reduction flag according to the historical displayed cruising range and the reference cruising range;

[0035] Determine the cruising range change step length, the cruising range increase interval time and the cruising range decrease interval time according to the reference cruising range;

[0036] The target displayed cruising range is obtained according to the short time count flag, the cruising range change value, the cruising range reduction flag, the cruising range change step, the cruising range increase interval, the cruising range reduction interval, the historical displayed cruising range and the reference cruising range.

[0037] In addition, to achieve the above purpose, the present application also proposes a device for calculating the cruising range of an electric vehicle, the device comprising:

[0038] An information acquisition module is used to obtain the operation information of the electric vehicle and display the historical mileage;

[0039] A data processing module, used to obtain a basic value of a cruising range and a vehicle driving flag according to the operating information;

[0040] The cruising range calculation module is used to obtain the target displayed cruising range according to the operating information, the historical displayed cruising range, the cruising range basic value and the vehicle driving mark.

[0041] In addition, to achieve the above-mentioned purpose, the present application also proposes an electric vehicle range calculation device, which includes: a memory, a processor, and a computer program stored in the memory and executable on the processor, and the computer program is configured to implement the steps of the electric vehicle range calculation method as described above.

[0042] In addition, to achieve the above-mentioned purpose, the present application also proposes a storage medium, which is a computer-readable storage medium, and a computer program is stored on the storage medium. When the computer program is executed by the processor, the steps of the electric vehicle range calculation method as described above are implemented.

[0043] In addition, to achieve the above-mentioned purpose, the present application also provides a computer program product, which includes a computer program, and when the computer program is executed by a processor, it implements the steps of the electric vehicle range calculation method as described above.

[0044] The present application provides a method for calculating the cruising range of an electric vehicle, and the method of the present application includes: obtaining the operation information and historical displayed cruising range of the electric vehicle; obtaining the cruising range base value and the vehicle driving flag according to the operation information; obtaining the target displayed cruising range according to the operation information, the historical displayed cruising range, the cruising range base value and the vehicle driving flag. In summary, the present application analyzes various operating status information of the electric vehicle, such as vehicle speed, PEPS start button request, battery health, total vehicle mileage, PTC working flag, ambient temperature, etc., and accurately calculates the displayed cruising range of the electric vehicle based on this, thereby solving the problem of how to accurately calculate the cruising range that the electric vehicle should display, and improving the calculation accuracy and display accuracy of the electric vehicle's cruising range. BRIEF DESCRIPTION OF THE DRAWINGS

[0045] The accompanying drawings, which are incorporated in and constitute a part of this specification, illustrate embodiments consistent with the present application and, together with the description, serve to explain the principles of the present application.

[0046] In order to more clearly illustrate the embodiments of the present application or the technical solutions in the prior art, the drawings required for use in the embodiments or the description of the prior art will be briefly introduced below. Obviously, for ordinary technicians in this field, other drawings can be obtained based on these drawings without paying any creative labor.

[0047] Figure 1 A flowchart diagram of the first embodiment of the method for calculating the cruising range of an electric vehicle provided in this application;

[0048] Figure 2 This is a schematic diagram of the overall process of an embodiment of a method for calculating the cruising range of an electric vehicle of the present application;

[0049] Figure 3 A flowchart diagram of a second embodiment of a method for calculating the cruising range of an electric vehicle provided in this application;

[0050] Figure 4 A flowchart diagram of the third embodiment of the method for calculating the cruising range of an electric vehicle provided in this application;

[0051] Figure 5 This is a schematic diagram of the module structure of the electric vehicle range calculation device according to an embodiment of the present application;

[0052] Figure 6 Schematic diagram of the device structure of the hardware operating environment involved in the electric vehicle range calculation method in the embodiment of the present application.

[0053] The purpose, features and advantages of this application will be further described in conjunction with the embodiments and with reference to the accompanying drawings. DETAILED DESCRIPTION

[0054] It should be understood that the specific embodiments described herein are only used to explain the technical solutions of the present application and are not used to limit the present application.

[0055] In order to better understand the technical solution of the present application, a detailed description will be given below in conjunction with the accompanying drawings and specific implementation methods.

[0056] The main solution of the embodiment of the present application is: obtaining the operating information and historical displayed cruising range of the electric vehicle; obtaining the basic value of the cruising range and the vehicle driving flag according to the operating information; obtaining the target displayed cruising range according to the operating information, the historical displayed cruising range, the basic value of the cruising range and the vehicle driving flag.

[0057] With the increasing global attention to environmental protection and energy conservation, electric vehicles have gradually become the mainstream trend in the automotive market due to their many advantages such as energy saving, high efficiency, low or zero emissions, low noise, fast acceleration and low operating costs. With the continuous advancement of technology and the increasing acceptance of electric vehicles by consumers, the electric vehicle market has shown a rapid growth trend. Major automobile OEMs have increased their R&D efforts and are committed to improving the performance and user experience of electric vehicles.

[0058] Among the many performance indicators of electric vehicles, driving range is one of the factors that consumers care about most. Due to the range anxiety of electric vehicles, that is, the uncertainty of users about the remaining driving range of the vehicle, they often need to pay attention to the battery level and remaining range in actual use, which affects the driving experience and satisfaction. Therefore, how to accurately calculate the driving range that an electric vehicle should display is a problem that needs to be solved urgently.

[0059] It should be noted that the execution subject of this embodiment may be an electric vehicle range calculation system, or a computing service device with data processing, network communication and program running functions, or an electronic device capable of realizing the above electric vehicle range calculation function, etc., and this embodiment does not specifically limit this. The following takes the electric vehicle range calculation system as an example to illustrate this embodiment and the following embodiments.

[0060] Based on this, the present application embodiment provides a method for calculating the cruising range of an electric vehicle, referring to Figure 1 , Figure 1 This is a flow chart of the first embodiment of the method for calculating the cruising range of an electric vehicle of the present application.

[0061] In this embodiment, the electric vehicle cruising range calculation method includes steps S10 to S30:

[0062] Step S10: Obtaining the operation information and historical display mileage of the electric vehicle.

[0063] It should be noted that if Figure 2As shown, in this step, the system will collect various operating information of the electric vehicle in real time through the VCU (Vehicle Control Unit) of the electric vehicle, including but not limited to vehicle speed, PEPS (Passive Entry Passive Start, keyless entry and start system) button start request, battery health, total mileage, PTC (Positive Temperature Coefficient, positive temperature coefficient thermistor) working flag, ambient temperature, air conditioning working flag and battery power. At the same time, the system will read the displayed cruising range at the previous calculation time from the IVI (In-Vehicle Infotainment, in-vehicle infotainment system) controller or related storage unit as the historical display cruising range data.

[0064] Step S20: Obtaining a basic value of a cruising range and a vehicle driving flag according to the operating information.

[0065] It should be noted that the basic value of the cruising range is the preliminary calculation result of the cruising range after comprehensive consideration of various factors, and the vehicle driving flag is an identification of the current driving status of the vehicle. The two together provide a data basis for subsequent accurate calculations. Specifically, in this step, the system will calculate the basic value of the cruising range based on basic information such as vehicle speed and battery power, by looking up the corresponding relationship table and the preset algorithm (such as considering the battery health correction factor, low temperature correction factor, high temperature cruising range correction value, etc.). At the same time, the vehicle driving flag is judged and set according to conditions such as vehicle speed and duration. This flag is used to distinguish whether the vehicle is in a driving state in subsequent calculations, so as to make more accurate calculations.

[0066] Step S30: Obtaining a target displayed cruising range according to the operating information, the historical displayed cruising range, the cruising range base value and the vehicle driving flag.

[0067] It should be noted that the target displayed cruising range refers to the value that the electric vehicle's cruising range should display in its current state. Specifically, in this step, the system will calculate the reference cruising range based on changes in battery power, changes in the vehicle's total mileage, and the basic value of the cruising range, combined with the historical displayed cruising range and the vehicle's driving flag. Then, based on factors such as the reference cruising range, the previous calculated timetable displayed cruising range, and the time count short flag, through a series of logical judgments and calculations (such as considering the cruising range change step, the cruising range increase interval time, and the cruising range reduction interval time, etc.), the target displayed cruising range is finally determined.

[0068] It can be understood that this step makes the calculated target displayed cruising range more accurate and stable by comprehensively considering multiple factors, effectively avoiding the problem of large jumps in displayed cruising range due to data jumps such as battery power.

[0069] The present embodiment provides a method for calculating the cruising range of an electric vehicle, and the method of the present embodiment includes: obtaining the operation information and the historical displayed cruising range of the electric vehicle; obtaining the cruising range base value and the vehicle driving flag according to the operation information; obtaining the target displayed cruising range according to the operation information, the historical displayed cruising range, the cruising range base value and the vehicle driving flag. In summary, the present embodiment analyzes various operation status information of the electric vehicle, such as vehicle speed, PEPS start button request, battery health, total vehicle mileage, PTC working flag, ambient temperature, etc., and accurately calculates the displayed cruising range of the electric vehicle based on this, thereby solving the problem of how to accurately calculate the cruising range that the electric vehicle should display, and improving the calculation accuracy and display accuracy of the electric vehicle's cruising range.

[0070] Based on the first embodiment of the present application, in the second embodiment of the present application, the same or similar contents as those in the above-mentioned embodiment 1 can refer to the above introduction, and will not be repeated later. Figure 3 , Figure 3 This is a flow chart of the second embodiment of the method for calculating the cruising range of an electric vehicle of the present application, wherein step S20 specifically includes:

[0071] Step S201: Obtain key pressing duration.

[0072] It should be noted that in this step, the system will monitor the PEPS key start request through the VCU controller. When it is detected that the PEPS key start request changes (such as jumping from "high voltage request" or "ready request" to "power off request", or from "power off request" to "high voltage request" or "ready request"), the controller will start a timer to start timing, which is used to record the duration of the key. The key duration obtained by this timer will be used in the subsequent judgment logic.

[0073] It is understandable that the purpose of obtaining the key duration is to determine whether the vehicle's power state has undergone a lasting change, so as to distinguish whether it is a momentary misoperation or a real driving demand, and to provide a basis for subsequent steps such as determining the vehicle's driving mark position.

[0074] Step S202: Determine the vehicle driving flag according to the PEPS button start request, the vehicle speed and the button pressing duration.

[0075] It should be noted that the PEPS push-button start request refers to the request signal for the user to power on or off the vehicle through the keyless start system. The vehicle driving flag is a flag used to indicate whether the vehicle is currently in driving state. This flag can be used to control the calculation logic of the cruising range in different states to meet different needs.

[0076] In addition, it should be noted that in this step, the system will determine whether it is necessary to change the state of the vehicle's driving flag according to the duration of the button, combined with the current vehicle speed and the PEPS button start request status. Specifically, if the PEPS button start request is a "power-off request" or (vehicle speed ≦ calibration value S1 and the duration exceeds the calibration value T1), the vehicle's driving flag is reset, indicating that the vehicle is not currently in a driving state. Otherwise, if it is further determined that (vehicle speed > calibration value S1 and the duration exceeds calibration value T2), the vehicle's driving flag is in position, indicating that the vehicle has entered or remains in a driving state. Among them, S1, T1, and T2 are all pre-set values, and the size can be modified according to actual conditions.

[0077] It is understandable that the purpose of determining the vehicle driving flag is to more accurately reflect the actual driving state of the vehicle, so that different endurance calculation strategies are adopted under different states to improve the accuracy of the calculation.

[0078] Step S203: Obtaining a battery health correction coefficient according to the PEPS button start request, the battery health and the total mileage.

[0079] It should be noted that the battery health correction factor is a parameter used to adjust the error in the range calculation caused by battery performance degradation over time or temperature, etc. Through this correction factor, the range of electric vehicles under different driving conditions can be predicted more accurately.

[0080] In a feasible implementation manner, the step S203 specifically includes:

[0081] Step A10: Obtaining an average battery health status based on the PEPS button start request.

[0082] It should be noted that the average battery health refers to the average value of the battery health over a period of time, which is used to reflect the overall performance status of the battery during this period of time. Specifically, in this step, the system monitors the PEPS button start request. When the PEPS button start request is a "high voltage request" or a "ready request", the system starts to record and calculate the average health of the battery. At this time, the average battery health time counter starts timing. When the value of the time counter reaches or exceeds the preset calibration value T3 (this value can be adjusted according to actual conditions), the system will calculate the average battery health based on all the currently recorded battery health values. The specific calculation method is: sum up all the recorded battery health values, and then divide them by the number of records (that is, the number of real-time values ​​recorded in the time period when the time counter reaches T3) to obtain the average battery health. At the same time, the average battery health time counter is reset to zero and restarts timing to prepare for the next calculation.

[0083] Step A20: Obtain a first battery health according to the battery health and the average battery health.

[0084] It should be noted that the first battery health is obtained based on a comprehensive judgment of the battery health and the average battery health, and is used for the subsequent calculation of the battery health correction coefficient to more accurately reflect the current performance status of the battery. In this step, the system compares the difference between the battery health and the average battery health. If the absolute value of the difference between the battery health and the average battery health is greater than or equal to the preset calibration value A1 (this value can be adjusted according to actual conditions), the first battery health is set to the average battery health; otherwise, the first battery health is set to the battery health. For example, assume that the battery health is 88%, the average battery health is 90.3%, and the calibration value A1 is 2%. Since |88%-90.3%|=2.3%>2%, the first battery health is set to 90.3%.

[0085] Step A30: Obtain a second battery health status according to the total driving mileage.

[0086] It should be noted that the second battery health is obtained by searching in a preset table according to the total mileage of the vehicle, and is used for the subsequent calculation of the battery health correction coefficient. Specifically, in this step, the system searches for the corresponding second battery health in Table 1 according to the total mileage. The total mileage and the corresponding second battery health in the table can be adjusted and modified according to actual conditions.

[0087] Table 1

[0088]

[0089] Step A40: Obtain a battery health correction coefficient according to the total mileage, the first battery health, and the second battery health.

[0090] It should be noted that in this step, the system will calculate the battery health correction coefficient based on the vehicle's total mileage, the battery's first health and the battery's second health, that is: if the total mileage ≦ the preset calibration value B1 (the value can be modified), the battery health correction coefficient = 1; otherwise, proceed to the next step of judgment; in the next step of judgment, if the battery's second health ≧ (battery's first health + calibration value C1 (value can be modified)), the battery health correction coefficient = battery's first health / 100; otherwise, the battery health correction coefficient = battery's second health / 100.

[0091] Step S204: obtaining a low temperature correction coefficient according to the vehicle driving flag, the PTC working flag and the ambient temperature.

[0092] It should be noted that the PTC working flag is a flag that indicates whether the vehicle's thermal management system is working in order to adjust the battery temperature. The low temperature correction coefficient is a parameter used to correct the reduction in battery capacity in a low temperature environment to ensure the accuracy of the calculation of the cruising range. Specifically, in this step, the system will comprehensively analyze the vehicle's driving status (vehicle driving flag), the PTC's working status (PTC working flag) and the current ambient temperature to calculate the impact of low temperature on battery performance, thereby determining the low temperature correction coefficient under the current circumstances.

[0093] In a feasible implementation manner, the step S204 specifically includes:

[0094] Step B10: Determine a first low-temperature correction coefficient and a second low-temperature correction coefficient according to the ambient temperature.

[0095] It should be noted that the first low-temperature correction coefficient and the second low-temperature correction coefficient are both low-temperature correction parameters obtained by looking up the table based on the ambient temperature, and are used to correct the battery performance under low-temperature conditions. The first low-temperature correction coefficient is usually used when the vehicle's PTC heating system is not started or the PTC heating system is not fully working; while the second low-temperature correction coefficient is used when the PTC heating system has been started and has been working for a certain period of time. Specifically, assuming that the current ambient temperature is -20°C, according to Table 2, the system will find the corresponding first low-temperature correction coefficient of 0.82. Similarly, according to Table 3, the system will find the corresponding second low-temperature correction coefficient of 0.6. These two correction coefficients will be used in subsequent calculations to adjust the impact of the low-temperature environment on battery performance.

[0096] Table 2

[0097]

[0098] Table 3

[0099]

[0100] Step B20: Obtaining a low temperature correction coefficient according to the vehicle driving flag, the PTC working flag, the first low temperature correction coefficient and the second low temperature correction coefficient.

[0101] It should be noted that in this step, the system will determine the final low-temperature correction coefficient based on the vehicle driving flag, the PTC working flag, the first correction coefficient obtained in the previous step, and the low-temperature second correction coefficient. Specifically, when the PTC working flag changes from reset to set, if (the PTC working flag and the vehicle driving flag are set at the same time), and the duration exceeds the calibration value T4 (the value can be modified), then the low-temperature correction coefficient = the second low-temperature correction coefficient; otherwise, the low-temperature correction coefficient = the first low-temperature correction coefficient; when the PTC working flag changes from set to reset, if (the PTC working flag is reset, and the vehicle driving flag is set), and the duration exceeds the calibration value T5 (the value can be modified), the low-temperature correction coefficient = the first low-temperature correction coefficient; otherwise, the low-temperature correction coefficient = the second low-temperature correction coefficient. Among them, T4 and T5 are both pre-set values, and the size can be modified according to actual conditions.

[0102] Step S205: obtaining a high-temperature cruising range correction value according to the vehicle driving flag, the air conditioning working flag and the ambient temperature.

[0103] It should be noted that the air conditioning working flag is a flag that reflects the operating status of the air conditioning compressor. The high temperature range correction value is a parameter that corrects the impact of excessive temperature on battery performance and the additional power consumption caused by the use of air conditioning, and is used to ensure the accuracy of the range calculation.

[0104] Specifically, in this step, when the air conditioner working flag changes from reset to set, if (the air conditioner working flag and the vehicle driving flag are set at the same time) and the duration exceeds the calibration value T6 (the value can be modified), then the high temperature cruising range correction value = the high temperature cruising range correction value in Table 4 * battery power / 100; otherwise, the high temperature cruising range correction value = 0. When the air conditioner compressor working flag changes from set to reset, if (the air conditioner compressor working flag is reset, and the vehicle driving flag is set) the duration exceeds the calibration value T7 (the value can be modified), then the high temperature cruising range correction value = 0; otherwise, the high temperature cruising range correction value = the high temperature cruising range correction value in Table 4 * battery power / 100. For example, when the ambient temperature is 35°C and the air conditioner continues to work to meet the conditions, the high temperature cruising range correction value is 25km (see Table 4). In addition, it should be noted that T6 and T7 are both preset values, and the size can be modified according to actual conditions.

[0105] Table 4

[0106]

[0107] Step S206: Obtain a cruising range base value according to the battery power, the battery health correction coefficient, the low temperature correction coefficient, and the high temperature cruising range correction value.

[0108] It should be noted that in this step, the system will obtain the standard basic value of the cruising range according to the battery power lookup table 5, and then adjust the standard basic value in combination with the previously calculated battery health correction coefficient, low temperature correction coefficient and high temperature cruising range correction value to obtain the final cruising range basic value. Specifically, cruising range basic value = cruising range standard basic value * battery health correction coefficient * low temperature correction coefficient - high temperature cruising range correction value. Assuming that the current battery power is 80%, according to Table 5, the standard basic value of the cruising range is 185km. Then, according to the battery health correction coefficient (such as 0.95, indicating that the battery health is slightly lower than that of a new battery), the low temperature correction coefficient (such as 1) and the high temperature cruising range correction value (such as 25km), the cruising range basic value is calculated. The specific calculation result is: cruising range basic value = 185km*0.95*1-25km=150.75km.

[0109] Table 5

[0110]

[0111] In this embodiment, by comprehensively considering multiple factors such as vehicle driving conditions, battery power, battery health status, ambient temperature, and air conditioning usage, the actual endurance of the electric vehicle can be more comprehensively reflected, and more accurate electric vehicle endurance information can be displayed to users.

[0112] Based on the first and second embodiments of the present application, in the third embodiment of the present application, the same or similar contents as those in the first and second embodiments can be referred to the above description, and will not be described in detail later. Figure 4 , Figure 4 This is a flow chart of the third embodiment of the method for calculating the cruising range of an electric vehicle of the present application, wherein step S30 specifically includes:

[0113] Step S301: obtaining storage of battery power, storage of total mileage and time count short flag according to the PEPS button start request.

[0114] It should be noted that the stored battery power and the stored total mileage are the values ​​of the battery power and the total mileage of the vehicle recorded under specific conditions, which are used for subsequent calculations and comparisons. The short time count flag is a flag indicating the state of the time counter. Specifically, in this step, when the PEPS button start request changes from ("high voltage request" or "ready request") to "power off request", the system will first record the current battery power, and this value is set as the stored battery power. It can be understood that the purpose of doing so is to be able to compare the change in battery power in future calculations, so as to more accurately estimate the cruising range. Similarly, when the PEPS button start request changes from ("high voltage request" or "ready request") to "power off request", the system will also record the current total mileage of the vehicle as the stored total mileage. In addition, when the PEPS button start request jumps from "power off request" to ("high voltage request" or "ready request"), the time counter inside the system will start to clear and restart the timing. This time counter is used to determine whether the duration of the vehicle recovering from the power-off state to the power-on state is short enough to decide whether to set the time count short flag. If the time counter count value is less than or equal to the calibration value T8 (pre-set time threshold), the time count short flag is set, indicating that the power-on operation is completed in a short time and the cruising range may not need to be recalculated; otherwise, the flag is reset.

[0115] Step S302: Obtain a reference cruising range according to the battery power, the total mileage, the historical displayed cruising range, the stored battery power, the stored total mileage, the time count short flag, the cruising range base value and the vehicle driving flag.

[0116] It should be noted that the reference range is an intermediate reference value for calculating the final target range, which is used for verification and adjustment before the displayed range is finally determined. In this step, the system will make a series of conditional judgments based on the current battery power, total mileage, historical displayed range, the stored battery power, the stored total mileage, the time count short flag, the range base value (calculated in the previous step) and the vehicle driving flag, and determine the reference range based on the judgment results.

[0117] In a feasible implementation manner, the step S302 specifically includes:

[0118] Step C10: Determine the state of the first flag of the cruising range according to the battery power, the stored battery power, the total mileage, the stored total mileage, the basic value of the cruising range, the historical displayed cruising range and the time count short flag.

[0119] It should be noted that, specifically, when the absolute value of [(battery power - stored battery power) ≧ calibration value A2 (value can be modified) or the absolute value of (total mileage - stored total mileage) ≧ calibration value A3 (value can be modified)], and the absolute value of (basic value of cruising range - historical displayed cruising range) ≧ calibration value A4 (value can be modified), and the time count short flag is set, then the first flag of cruising range is set, otherwise it is reset.

[0120] Step C20: Determine a reference cruising range flag state according to the total mileage, the historical displayed cruising range, the vehicle driving flag and the cruising range first flag state.

[0121] It should be noted that, specifically, when the total mileage is ≦ the calibration value B2 (the value can be modified), or the historical display of the cruising range = 0, or the vehicle driving flag is in position, or the cruising range first flag is in position, then the cruising range flag position is referenced, otherwise it is reset.

[0122] Step C30: Determine a reference cruising range according to the reference cruising range flag status.

[0123] It should be noted that the system will determine the reference cruising range based on the status of the reference cruising range flag. Specifically, in this step, when the reference cruising range flag is in position, the reference cruising range = the basic cruising range value; when the reference cruising range flag is reset, the reference cruising range = the target displayed cruising range at the previous calculation moment.

[0124] Step S303: Obtain a target displayed cruising range according to the historical displayed cruising range, the time count short flag and the reference cruising range.

[0125] It should be noted that in this step, the system will comprehensively consider multiple factors such as the historical displayed cruising range (i.e. the target displayed cruising range at the previous calculation moment), the time count short flag, and the reference cruising range to calculate the current target displayed cruising range. It is understandable that the purpose of this step is to ensure that the target displayed cruising range is updated in real time while reducing the large jumps in the displayed cruising range caused by data fluctuations to improve the user experience. Specifically, the system will calculate the cruising range change value based on the historical displayed cruising range and the reference cruising range, and then determine the direction of the cruising range change, step size, interval time and other parameters by comparing the historical displayed cruising range with the reference cruising range, and then calculate the target displayed cruising range based on the above data.

[0126] In a feasible implementation manner, the step S303 specifically includes:

[0127] Step D10: Obtaining a cruising range change value and a cruising range reduction flag according to the historical displayed cruising range and the reference cruising range.

[0128] It should be noted that the cruising range change value is a physical quantity that measures the difference between two cruising range values, and directly reflects the increase or decrease of the cruising range. The cruising range reduction flag is a logical flag used to indicate whether the displayed cruising range value needs to be reduced. In this step, it is used as part of the conditional judgment to control the increase or decrease logic of the cruising range.

[0129] In addition, it should be noted that in this step, the system will calculate the absolute value difference between the historical displayed cruising range (i.e., the target displayed cruising range of the previous calculation cycle) and the currently calculated reference cruising range. Then, calculate the absolute value difference between the two, that is, the cruising range change value = |historical displayed cruising range at the previous calculation moment - current reference cruising range|. Next, compare the relationship between the historical displayed cruising range at the previous calculation moment and the current reference cruising range. If the historical displayed cruising range at the previous calculation moment is greater than or equal to the current reference cruising range, it means that the cruising range is decreasing or remains unchanged. At this time, the cruising range reduction flag is set to indicate that it is necessary to reduce the cruising range or reduce the step size. If the historical displayed cruising range at the previous calculation moment is less than the current reference cruising range, it means that the cruising range is increasing. At this time, the cruising range reduction flag is reset.

[0130] Step D20: Determine the cruising range change step, the cruising range increase interval time and the cruising range decrease interval time according to the reference cruising range.

[0131] It should be noted that the step length of the range change refers to the specific value adjusted each time the range increases or decreases. The interval time for the range increase / decrease is a parameter that controls the speed of the range increase or decrease. In this step, the system will determine the corresponding step length of the range change by looking up Table 6 (the corresponding table of the range and the range change step length) according to the current reference range. It can be understood that the role of this step is to provide a fixed step value for the increase or decrease of the range to ensure the smoothness and rationality of the change. At the same time, the system will also obtain the interval time required for the range increase by looking up Table 7 (the corresponding table of the range and the range increase interval time) based on the current reference range. It can be understood that this is to control the speed of the range increase to avoid the jump increase of the displayed value and affect the user experience. Finally, the system will obtain the interval time required for the range reduction by looking up Table 8 (the corresponding table of the range and the range reduction interval time) according to the current reference range. For example, assuming that the current reference cruising range is 130 km, according to Table 6, the cruising range change step is 5 km; according to Table 7, the cruising range increase interval is 10 seconds; according to Table 8, the cruising range decrease interval is 10 seconds.

[0132] Table 6

[0133]

[0134] Table 7

[0135]

[0136] Table 8

[0137]

[0138] Step D30: Obtain the target displayed cruising range according to the short time count flag, the cruising range change value, the cruising range reduction flag, the cruising range change step, the cruising range increase interval, the cruising range reduction interval, the historical displayed cruising range and the reference cruising range.

[0139] It should be noted that in this step, the system will detect the status of the time count short flag. If the time count short flag is set, the current reference range will be directly used as the target display range without further adjustment. This usually occurs within a period of time after the vehicle is just started or powered on again to ensure the stability and accuracy of the displayed value. If the time count short flag is reset, the range change value and the range reduction flag are further checked. If the range change value is less than the range change step, it means that the change in range is small and is not enough to trigger the adjustment of the display value. Therefore, the target display range remains unchanged, that is, it is equal to the historical display range at the previous calculation moment.

[0140] If the cruising range change value is greater than or equal to the cruising range change step, the cruising range is increased or decreased according to the cruising range reduction flag and the corresponding interval time. If the cruising range reduction flag is set and the cruising range reduction time counter has met the reduction interval time, the target displayed cruising range is reduced by the cruising range change step; if the cruising range reduction flag is reset and the cruising range increase time counter has met the increase interval time, the target displayed cruising range is increased by the cruising range change step. Otherwise, the target displayed cruising range remains unchanged.

[0141] In this embodiment, by considering key data such as PEPS start button request, battery power, total vehicle mileage, etc., and combining a variety of real-time data and historical data as well as the operating status of the electric vehicle, the problem of large jumps in target displayed cruising range due to signal jumps such as battery power is reduced, making the target cruising range information obtained by the driver more stable and reliable, thereby improving the user experience.

[0142] This application also provides a device for calculating the range of an electric vehicle, please refer to Figure 5 , the electric vehicle cruising range calculation device comprises:

[0143] The information acquisition module 10 is used to obtain the operation information and historical display mileage of the electric vehicle;

[0144] A data processing module 20, used to obtain a basic value of a cruising range and a vehicle driving flag according to the operating information;

[0145] The cruising range calculation module 30 is used to obtain a target displayed cruising range according to the operating information, the historical displayed cruising range, the cruising range base value and the vehicle driving flag.

[0146] The electric vehicle cruising range calculation device provided by the present application adopts the electric vehicle cruising range calculation method in the above embodiment, which can solve the technical problem of how to accurately calculate the cruising range that the electric vehicle should display. Compared with the prior art, the beneficial effects of the electric vehicle cruising range calculation device provided by the present application are the same as the beneficial effects of the electric vehicle cruising range calculation method provided by the above embodiment, and the other technical features of the electric vehicle cruising range calculation device are the same as the features disclosed in the above embodiment method, which will not be repeated here.

[0147] The present application provides an electric vehicle range calculation device, which includes: at least one processor; and a memory connected to the at least one processor in communication; wherein the memory stores instructions that can be executed by the at least one processor, and the instructions are executed by the at least one processor so that the at least one processor can execute the electric vehicle range calculation method in the above-mentioned embodiment one.

[0148] Reference below Figure 6 , which shows a schematic diagram of the structure of an electric vehicle cruising range calculation device suitable for implementing the embodiment of the present application. The electric vehicle cruising range calculation device in the embodiment of the present application may include but is not limited to mobile terminals such as mobile phones, laptop computers, digital broadcast receivers, PDAs (Personal Digital Assistants), PADs (Portable Application Descriptions), PMPs (Portable Media Players), vehicle-mounted terminals (such as vehicle-mounted navigation terminals), etc., and fixed terminals such as digital TVs, desktop computers, etc. Figure 6 The electric vehicle range calculation device shown is merely an example and should not bring any limitation to the functions and scope of use of the embodiments of the present application.

[0149] like Figure 6 As shown, the electric vehicle cruising range calculation device may include a processing device 1001 (such as a central processing unit, a graphics processor, etc.), which can perform various appropriate actions and processes according to a program stored in a read-only memory (ROM: Read Only Memory) 1002 or a program loaded from a storage device 1003 to a random access memory (RAM: Random Access Memory) 1004. In RAM1004, various programs and data required for the operation of the electric vehicle cruising range calculation device are also stored. The processing device 1001, ROM1002 and RAM1004 are connected to each other via a bus 1005. An input / output (I / O) interface 1006 is also connected to the bus. Typically, the following systems can be connected to the I / O interface 1006: input devices 1007 including, for example, a touch screen, a touchpad, a keyboard, a mouse, an image sensor, a microphone, an accelerometer, a gyroscope, etc.; output devices 1008 including, for example, a liquid crystal display (LCD), a speaker, a vibrator, etc.; storage devices 1003 including, for example, a magnetic tape, a hard disk, etc.; and communication devices 1009. The communication device 1009 can allow the electric vehicle range calculation device to communicate with other devices wirelessly or by wire to exchange data. Although the figure shows an electric vehicle range calculation device with various systems, it should be understood that it is not required to implement or have all the systems shown. More or fewer systems may be implemented or have instead.

[0150] In particular, according to the embodiments disclosed in the present application, the process described above with reference to the flowchart can be implemented as a computer software program. For example, the embodiments disclosed in the present application include a computer program product, which includes a computer program carried on a computer-readable medium, and the computer program includes a program code for executing the method shown in the flowchart. In such an embodiment, the computer program can be downloaded and installed from a network through a communication device, or installed from a storage device 1003, or installed from a ROM 1002. When the computer program is executed by the processing device 1001, the above-mentioned functions defined in the method of the embodiment disclosed in the present application are executed.

[0151] The electric vehicle range calculation device provided by the present application adopts the electric vehicle range calculation method in the above embodiment, which can solve the technical problem of how to accurately calculate the range that the electric vehicle should display. Compared with the prior art, the beneficial effects of the electric vehicle range calculation device provided by the present application are the same as the beneficial effects of the electric vehicle range calculation method provided by the above embodiment, and the other technical features of the electric vehicle range calculation device are the same as the features disclosed in the method of the previous embodiment, which will not be repeated here.

[0152] It should be understood that the various parts disclosed in this application can be implemented by hardware, software, firmware or a combination thereof. In the description of the above embodiments, specific features, structures, materials or characteristics can be combined in any one or more embodiments or examples in a suitable manner.

[0153] The above is only a specific implementation of the present application, but the protection scope of the present application is not limited thereto. Any person skilled in the art who is familiar with the present technical field can easily think of changes or substitutions within the technical scope disclosed in the present application, which should be included in the protection scope of the present application. Therefore, the protection scope of the present application should be based on the protection scope of the claims.

[0154] The present application provides a computer-readable storage medium having computer-readable program instructions (ie, computer programs) stored thereon, and the computer-readable program instructions are used to execute the electric vehicle range calculation method in the above-mentioned embodiment.

[0155] The computer-readable storage medium provided in the present application may be, for example, a USB flash drive, but is not limited to electrical, magnetic, optical, electromagnetic, infrared, or semiconductor systems, systems or devices, or any combination of the above. More specific examples of computer-readable storage media may include, but are not limited to: an electrical connection with one or more wires, a portable computer disk, a hard disk, a random access memory (RAM), a read-only memory (ROM), an erasable programmable read-only memory (EPROM or flash memory), an optical fiber, a portable compact disk read-only memory (CD-ROM), an optical storage device, a magnetic storage device, or any suitable combination of the above. In this embodiment, the computer-readable storage medium may be any tangible medium containing or storing a program that can be used by or in combination with an instruction execution system, system or device. The program code contained on the computer-readable storage medium may be transmitted using any appropriate medium, including but not limited to: wires, optical cables, RF (Radio Frequency), etc., or any suitable combination of the above.

[0156] The computer-readable storage medium may be included in the electric vehicle range calculation device; or may exist independently without being assembled into the electric vehicle range calculation device.

[0157] The above-mentioned computer-readable storage medium carries one or more programs. When the above-mentioned one or more programs are executed by the electric vehicle range calculation device, the electric vehicle range calculation device: obtains the operating information and historical displayed range of the electric vehicle; obtains the basic range value and the vehicle driving flag according to the operating information; obtains the target displayed range according to the operating information, the historical displayed range, the basic range value and the vehicle driving flag.

[0158] Computer program code for performing the operations of the present application may be written in one or more programming languages ​​or a combination thereof, including object-oriented programming languages ​​such as Java, Smalltalk, C++, and conventional procedural programming languages ​​such as "C" or similar programming languages. The program code may be executed entirely on the user's computer, partially on the user's computer, as a separate software package, partially on the user's computer and partially on a remote computer, or entirely on a remote computer or server. In the case of a remote computer, the remote computer may be connected to the user's computer through any type of network, including a local area network (LAN) or a wide area network (WAN), or may be connected to an external computer (e.g., via the Internet using an Internet service provider).

[0159] The flow chart and block diagram in the accompanying drawings illustrate the possible architecture, function and operation of the system, method and computer program product according to various embodiments of the present application. In this regard, each square box in the flow chart or block diagram can represent a module, a program segment or a part of a code, and the module, the program segment or a part of the code contains one or more executable instructions for realizing the specified logical function. It should also be noted that in some alternative implementations, the functions marked in the square box can also occur in a sequence different from that marked in the accompanying drawings. For example, two square boxes represented in succession can actually be executed substantially in parallel, and they can sometimes be executed in the opposite order, depending on the functions involved. It should also be noted that each square box in the block diagram and / or flow chart, and the combination of the square boxes in the block diagram and / or flow chart can be implemented with a dedicated hardware-based system that performs a specified function or operation, or can be implemented with a combination of dedicated hardware and computer instructions.

[0160] The modules involved in the embodiments described in this application may be implemented by software or hardware, wherein the name of the module does not constitute a limitation on the unit itself in some cases.

[0161] The readable storage medium provided in this application is a computer-readable storage medium, which stores computer-readable program instructions (i.e., computer programs) for executing the above-mentioned electric vehicle range calculation method, and can solve the technical problem of how to accurately calculate the range that the electric vehicle should display. Compared with the prior art, the beneficial effects of the computer-readable storage medium provided in this application are the same as the beneficial effects of the electric vehicle range calculation method provided in the above-mentioned embodiment, and will not be repeated here.

[0162] The present application also provides a computer program product, including a computer program, which, when executed by a processor, implements the steps of the above-mentioned method for calculating the cruising range of an electric vehicle.

[0163] The computer program product provided in this application can solve the technical problem of how to accurately calculate the range that an electric vehicle should display. Compared with the prior art, the beneficial effects of the computer program product provided in this application are the same as the beneficial effects of the electric vehicle range calculation method provided in the above embodiment, and will not be repeated here.

[0164] The above descriptions are only some embodiments of the present application, and are not intended to limit the patent scope of the present application. All equivalent structural changes made using the contents of the present application specification and drawings under the technical concept of the present application, or direct / indirect applications in other related technical fields are included in the patent protection scope of the present application.

Claims

1. A method for calculating the cruising range of an electric vehicle, characterized in that: The method comprises: Get the operation information and historical mileage of electric vehicles; Obtaining a basic value of cruising range and a vehicle driving flag according to the operating information; The target displayed cruising range is obtained according to the operating information, the historical displayed cruising range, the cruising range base value and the vehicle driving flag.

2. The method according to claim 1, characterized in that The operation information includes PEPS button start request, vehicle speed, battery power, battery health, total mileage, PTC working flag, ambient temperature and air conditioning working flag; The step of obtaining the basic value of the cruising range and the vehicle driving flag according to the operating information comprises: Get the key duration; Determine a vehicle driving flag position according to the PEPS button start request, the vehicle speed and the button duration; Obtaining a battery health correction coefficient according to the PEPS button start request, the battery health, and the total mileage; Obtaining a low temperature correction coefficient according to the vehicle driving flag, the PTC working flag and the ambient temperature; Obtaining a high-temperature cruising range correction value according to the vehicle driving flag, the air conditioning working flag and the ambient temperature; A cruising range basic value is obtained according to the battery power, the battery health correction coefficient, the low temperature correction coefficient and the high temperature cruising range correction value.

3. The method according to claim 2, characterized in that The step of obtaining a battery health correction coefficient according to the PEPS button start request, the battery health and the total mileage comprises: Obtaining an average battery health based on the PEPS key start request; Obtaining a first battery health according to the battery health and the average battery health; Obtaining a second battery health status according to the total driving mileage; A battery health correction coefficient is obtained according to the total driving mileage, the first battery health and the second battery health.

4. The method according to claim 2, characterized in that The step of obtaining the low temperature correction coefficient according to the vehicle driving flag, the PTC working flag and the ambient temperature comprises: Determine a first low temperature correction coefficient and a second low temperature correction coefficient according to the ambient temperature; A low temperature correction coefficient is obtained according to the vehicle driving flag, the PTC working flag, the first low temperature correction coefficient and the second low temperature correction coefficient.

5. The method according to claim 1, characterized in that The operation information includes PEPS button start request, battery power and total mileage; The step of obtaining the target displayed cruising range according to the operation information, the historical displayed cruising range, the cruising range base value and the vehicle driving flag position comprises: According to the PEPS key start request, the storage battery power, the storage total mileage and the time count short flag are obtained; Obtaining a reference cruising range according to the battery power, the total mileage, the historical displayed cruising range, the stored battery power, the stored total mileage, the time count short flag, the cruising range base value, and the vehicle driving flag; A target displayed cruising range is obtained according to the historical displayed cruising range, the time counting short flag and the reference cruising range.

6. The method according to claim 5, characterized in that The step of obtaining a reference cruising range according to the battery power, the total mileage, the historical displayed cruising range, the stored battery power, the stored total mileage, the time count short flag, the cruising range base value and the vehicle driving flag comprises: Determine the state of the first flag bit of the cruising range according to the battery power, the stored battery power, the total mileage, the stored total mileage, the basic value of the cruising range, the historical displayed cruising range, and the time count short flag bit; Determine a reference cruising range flag state according to the total mileage, the historical displayed cruising range, the vehicle driving flag, and the cruising range first flag state; The reference cruising range is determined according to the reference cruising range flag status.

7. The method according to claim 5, characterized in that The step of obtaining a target displayed cruising range according to the historical displayed cruising range, the time counting short flag and the reference cruising range comprises: Obtaining a cruising range change value and a cruising range reduction flag according to the historical displayed cruising range and the reference cruising range; Determine the cruising range change step length, the cruising range increase interval time and the cruising range decrease interval time according to the reference cruising range; The target displayed cruising range is obtained according to the short time count flag, the cruising range change value, the cruising range reduction flag, the cruising range change step, the cruising range increase interval, the cruising range reduction interval, the historical displayed cruising range and the reference cruising range.

8. A device for calculating the cruising range of an electric vehicle, characterized in that: The device comprises: An information acquisition module is used to obtain the operation information of the electric vehicle and display the historical mileage; A data processing module, used to obtain a basic value of a cruising range and a vehicle driving flag according to the operating information; The cruising range calculation module is used to obtain the target displayed cruising range according to the operating information, the historical displayed cruising range, the cruising range basic value and the vehicle driving flag.

9. An electric vehicle range calculation device, characterized in that: The device comprises: a memory, a processor, and a computer program stored in the memory and executable on the processor, wherein the computer program is configured to implement the steps of the method for calculating the cruising range of an electric vehicle as claimed in any one of claims 1 to 7.

10. A storage medium, characterized in that: The storage medium is a computer-readable storage medium, and a computer program is stored on the storage medium. When the computer program is executed by a processor, the steps of the electric vehicle range calculation method according to any one of claims 1 to 7 are implemented.

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