Vehicle power generation control method and device, vehicle and storage medium

Abstract

The invention relates to a power generation control method and device for a vehicle, the vehicle and a storage medium, and the method comprises the steps: calculating a battery electric quantity change rate of the current vehicle according to a starting SOC value, a stopping SOC value, a maximum SOC value, a minimum SOC value, a first duration from the starting SOC value to the minimum SOC value, and a second duration from the minimum SOC value to the stopping SOC value within a preset duration, correcting the current power generation grade based on the battery electric quantity change rate to obtain a target power generation grade; and calculating target power generation power based on a preset power generation level-power generation power MAP table and the target power generation level, and controlling the current vehicle to generate power based on the target power generation power. Therefore, the problems of high cost, complex strategy, poor replicability and the like in the prior art are solved, the power generation level is dynamically adjusted by introducing the electric quantity change rate variable, the NVH performance of the whole vehicle is improved on the premise of ensuring the electricity guarantee performance, and the driving experience of a user is optimized.

Description

Technical Field

[0001] The present application relates to the field of vehicle technology, and in particular to a vehicle power generation control method, device, vehicle and storage medium. Background Art

[0002] With the increase of environmental awareness and the adjustment of energy structure, hybrid vehicles have received widespread attention in the market due to their lower emissions and higher fuel economy. When purchasing hybrid vehicles, customers not only pay attention to the fuel economy and range of the vehicle, but also pay more attention to the NVH (Noise, Vibration, Harshness) performance of the whole vehicle, hoping that it can reach the level of pure electric vehicles. In addition, when automobile manufacturers design hybrid vehicles, the power retention capacity of the whole vehicle is also an important design indicator. In different scenarios, the power generation requirements of hybrid vehicles are different. Although the lower power generation level helps to improve the NVH performance of the whole vehicle, it may lead to insufficient power generation capacity and even fail to maintain the battery power; on the contrary, although the excessively high power generation level can guarantee the battery power, it will significantly reduce the NVH performance and affect the user experience.

[0003] In the relevant technology, in order to coordinate the power generation level and the NVH performance of the whole vehicle, there are mainly the following solutions. The first is the hardware solution. One method is to use a larger engine, which is conducive to balancing power conservation and NVH performance under different working conditions; another method is to add intelligent strategy logic, based on map navigation information, and reasonably control different power generation levels according to different vehicle states to achieve a balance between power conservation and NVH. The second is the software solution. One method is to add more corrections on the basis of the main strategy, such as optimizing for specific working conditions such as mountain roads, high temperatures, low temperatures, and plateaus; another method is to introduce driving state variables (such as the accelerator pedal) on the basis of the main strategy to control power generation together with the vehicle state.

[0004] However, although the hardware solutions in the related technologies are conducive to balancing power conservation and NVH performance under different working conditions, they increase the hardware cost. In addition, the software solutions in the related technologies have problems such as multiple strategy maps, difficult coupling, and poor replicability of different models (real vehicle testing is required for confirmation and there is a lack of unified characterization and calibration), which need to be solved urgently. Summary of the invention

[0005] The present application provides a vehicle power generation control method, device, vehicle and storage medium to solve the problems of high cost, complex strategy and poor replicability of the existing technology. A balance between vehicle power preservation and NVH is achieved through a software solution. It has wide applicability and replicability and can be scientifically and uniformly applied to different vehicle models.

[0006] The first embodiment of the present application provides a vehicle power generation control method, comprising the following steps:

[0007] Obtaining the current power generation level of the current vehicle, the starting SOC (State Of Charge) value within a preset time, the ending SOC value, the maximum SOC value, the minimum SOC value, the first duration from the starting SOC value to the minimum SOC value, and the second duration from the minimum SOC value to the ending SOC value;

[0008] Calculating a battery power change rate of the current vehicle according to a starting SOC value, an ending SOC value, a maximum SOC value, a minimum SOC value, the first duration, and the second duration within the preset duration, and correcting the current power generation level based on the battery power change rate to obtain a target power generation level;

[0009] A target power generation power is calculated based on a preset power generation level-power generation power MAP table and the target power generation level, and the current vehicle is controlled to generate power based on the target power generation power.

[0010] According to an embodiment of the present application, the calculating the battery power change rate of the current vehicle according to the starting SOC value, the ending SOC value, the maximum SOC value, the minimum SOC value, the first duration and the second duration within the preset time period includes:

[0011] If the starting SOC value is less than the maximum SOC value, determining whether the minimum SOC value is greater than a first preset threshold;

[0012] If the minimum SOC value is greater than the first preset threshold, the first difference between the termination SOC value and the minimum SOC value is calculated, and the battery charge change rate of the current vehicle is obtained based on the ratio of the first difference to the second duration; otherwise, the second difference between the minimum SOC value and the starting SOC value is calculated, and the battery charge change rate of the current vehicle is obtained based on the ratio of the second difference to the first duration.

[0013] According to an embodiment of the present application, the calculation of the battery power change rate of the current vehicle according to the starting SOC value, the ending SOC value, the maximum SOC value, the minimum SOC value, the first duration and the second duration within the preset time period also includes:

[0014] If the starting SOC value is greater than or equal to the maximum SOC value, determining whether the minimum SOC value is greater than a second preset threshold;

[0015] If the minimum SOC value is greater than the second preset threshold, the third difference between the ending SOC value and the starting SOC value is calculated, and the battery charge change rate of the current vehicle is obtained based on the ratio of the third difference to the preset duration; otherwise, the fourth difference between the minimum SOC value and the starting SOC value is calculated, and the battery charge change rate of the current vehicle is obtained based on the ratio of the fourth difference to the first duration.

[0016] According to an embodiment of the present application, the correcting the current power generation level based on the battery power change rate includes:

[0017] If the battery power change rate is a positive number, reducing the current power generation level based on a preset reduction strategy;

[0018] If the battery power change rate is a negative number, the current power generation level is increased based on a preset increase strategy.

[0019] According to one embodiment of the present application, the calculation of the target power generation based on the preset power generation level-power generation MAP table and the target power generation level includes:

[0020] Determine whether the target power generation level exists in the preset power generation level-power generation power MAP table;

[0021] If the target power generation level exists in the preset power generation level-power generation MAP table, then according to the target power generation level, the target power generation is obtained by looking up the preset power generation level-power generation MAP table;

[0022] If the target power generation level does not exist in the preset power generation level-power generation MAP table, an interpolation calculation is performed based on the preset power generation level-power generation MAP table and the target power generation level to obtain the target power generation.

[0023] According to the vehicle power generation control method provided in the embodiment of the present application, the battery charge change rate of the current vehicle is calculated according to the starting SOC value, the ending SOC value, the maximum SOC value, the minimum SOC value, the first continuous time from the starting SOC value to the minimum SOC value, and the second continuous time from the minimum SOC value to the ending SOC value within the preset time, and the current power generation level is corrected to obtain the target power generation level; the target power generation power is calculated based on the preset power generation level-power generation power MAP table and the target power generation level, and the current vehicle is controlled to generate power based on the target power generation power. Thus, the problems of high cost, complex strategy and poor replicability of the existing technology are solved, and the power generation level is dynamically adjusted by introducing the power change rate variable, so as to improve the NVH performance of the whole vehicle under the premise of ensuring the power conservation performance, and optimize the driving experience of the user.

[0024] A second aspect of the present application provides a vehicle power generation control device, including:

[0025] An acquisition module, used to acquire a current power generation level of the current vehicle, a starting SOC value within a preset time, an ending SOC value, a maximum SOC value, a minimum SOC value, a first duration from the starting SOC value to the minimum SOC value, and a second duration from the minimum SOC value to the ending SOC value;

[0026] a calculation and correction module, configured to calculate a battery power change rate of the current vehicle according to a starting SOC value, an ending SOC value, a maximum SOC value, a minimum SOC value, the first duration, and the second duration within the preset duration, and to correct the current power generation level based on the battery power change rate to obtain a target power generation level;

[0027] The control module is used to calculate the target power generation based on a preset power generation level-power generation MAP table and the target power generation level, and control the current vehicle to generate power based on the target power generation.

[0028] According to one embodiment of the present application, the calculation and correction module is used to:

[0029] If the starting SOC value is less than the maximum SOC value, determining whether the minimum SOC value is greater than a first preset threshold;

[0030] If the minimum SOC value is greater than the first preset threshold, the first difference between the termination SOC value and the minimum SOC value is calculated, and the battery charge change rate of the current vehicle is obtained based on the ratio of the first difference to the second duration; otherwise, the second difference between the minimum SOC value and the starting SOC value is calculated, and the battery charge change rate of the current vehicle is obtained based on the ratio of the second difference to the first duration.

[0031] According to one embodiment of the present application, the calculation and correction module is further used for:

[0032] If the starting SOC value is greater than or equal to the maximum SOC value, determining whether the minimum SOC value is greater than a second preset threshold;

[0033] If the minimum SOC value is greater than the second preset threshold, the third difference between the ending SOC value and the starting SOC value is calculated, and the battery charge change rate of the current vehicle is obtained based on the ratio of the third difference to the preset duration; otherwise, the fourth difference between the minimum SOC value and the starting SOC value is calculated, and the battery charge change rate of the current vehicle is obtained based on the ratio of the fourth difference to the first duration.

[0034] According to one embodiment of the present application, the calculation and correction module is used to:

[0035] If the battery power change rate is a positive number, reducing the current power generation level based on a preset reduction strategy;

[0036] If the battery power change rate is a negative number, the current power generation level is increased based on a preset increase strategy.

[0037] According to one embodiment of the present application, the control module is used to:

[0038] Determine whether the target power generation level exists in the preset power generation level-power generation power MAP table;

[0039] If the target power generation level exists in the preset power generation level-power generation MAP table, then according to the target power generation level, the target power generation is obtained by looking up the preset power generation level-power generation MAP table;

[0040] If the target power generation level does not exist in the preset power generation level-power generation MAP table, an interpolation calculation is performed based on the preset power generation level-power generation MAP table and the target power generation level to obtain the target power generation.

[0041] According to the vehicle power generation control device provided in the embodiment of the present application, the battery charge change rate of the current vehicle is calculated according to the starting SOC value, the ending SOC value, the maximum SOC value, the minimum SOC value, the first continuous time from the starting SOC value to the minimum SOC value, and the second continuous time from the minimum SOC value to the ending SOC value within the preset time, and the current power generation level is corrected to obtain the target power generation level; the target power generation power is calculated based on the preset power generation level-power generation power MAP table and the target power generation level, and the current vehicle is controlled to generate power based on the target power generation power. Thus, the problems of high cost, complex strategy and poor replicability of the existing technology are solved, and the power generation level is dynamically adjusted by introducing the power change rate variable, so as to improve the NVH performance of the whole vehicle under the premise of ensuring the power conservation performance, and optimize the driving experience of the user.

[0042] A third aspect of the present application provides a vehicle, comprising: a memory, a processor, and a computer program stored in the memory and executable on the processor, wherein the processor executes the program to implement the vehicle power generation control method as described in the above embodiment.

[0043] A fourth aspect of the present application provides a computer-readable storage medium, wherein the computer-readable storage medium stores computer instructions, and the computer instructions are used to enable the computer to execute the vehicle power generation control method as described in the above embodiment.

[0044] Additional aspects and advantages of the present application will be given in part in the description below, and in part will become apparent from the description below, or will be learned through the practice of the present application. BRIEF DESCRIPTION OF THE DRAWINGS

[0045] The above and / or additional aspects and advantages of the present application will become apparent and easily understood from the following description of the embodiments in conjunction with the accompanying drawings, in which:

[0046] Figure 1 A flow chart of a vehicle power generation control method provided according to an embodiment of the present application;

[0047] Figure 2 A schematic diagram of battery power change rate requirement parameters and parameter definitions according to an embodiment of the present application;

[0048] Figure 3 is a flow chart of a battery power change rate algorithm according to an embodiment of the present application;

[0049] Figure 4 is a flow chart of a vehicle power generation control method according to an embodiment of the present application;

[0050] Figure 5 is a block diagram of a vehicle power generation control device according to an embodiment of the present application;

[0051] Figure 6 A schematic diagram of the structure of a vehicle provided in an embodiment of the present application. DETAILED DESCRIPTION

[0052] Embodiments of the present application are described in detail below, and examples of the embodiments are shown in the accompanying drawings, wherein the same or similar reference numerals throughout represent the same or similar elements or elements having the same or similar functions. The embodiments described below with reference to the accompanying drawings are exemplary and are intended to be used to explain the present application, and should not be construed as limiting the present application.

[0053] The following describes the vehicle power generation control method, device, vehicle and storage medium of the embodiments of the present application with reference to the accompanying drawings.

[0054] It is understandable that the vehicle needs high-power power generation when the battery is low, and can use low-power or even no power generation when the battery is sufficient. The current vehicle strategy rules are also formulated based on this principle. However, vehicle operation is a dynamic process. When the vehicle is low in power but the overall operating load is small, the use of low-power or medium-power power generation can also maintain power balance, while high-power power generation will cause NVH performance to decline and affect user experience. Conversely, when the vehicle has sufficient power but the overall load is large, low-power or no power generation can easily cause the battery power to drop rapidly, which in turn causes the comfort change caused by subsequent high-power power generation.

[0055] Based on the above problems, the present invention proposes to define the vehicle's electric balance state by introducing a variable applicable to all vehicle models, namely the rate of change of the vehicle's power battery charge, without relying on hardware support such as navigation. Based on this variable, the power generation level is dynamically adjusted to achieve optimized correction of the power generation level, thereby achieving the purpose of power preservation and NVH balance.

[0056] The vehicle power generation control method proposed in this application is described in detail below.

[0057] Specifically, Figure 1 A schematic flow chart of a vehicle power generation control method provided in an embodiment of the present application.

[0058] like Figure 1 As shown, the vehicle power generation control method includes the following steps:

[0059] In step S101, the current power generation level of the current vehicle, the starting SOC value within a preset time, the ending SOC value, the maximum SOC value, the minimum SOC value, the first duration from the starting SOC value to the minimum SOC value, and the second duration from the minimum SOC value to the ending SOC value are obtained.

[0060] Specifically, the embodiment of the present application can be based on the basic strategy in the prior art, such as calculating the current power generation level of the current vehicle according to the current SOC, the difference between the target SOC and the current SOC, the vehicle speed, the accelerator pedal and other parameters. Among them, the calculated current power generation level can be an integer or a floating point number between two integers, that is, the current power generation level can be an integer level or an interpolation of the power generation corresponding to two integer levels.

[0061] Furthermore, the embodiments of the present application can obtain the starting SOC value, the ending SOC value, the maximum SOC value, the minimum SOC value, the first duration from the starting SOC value to the minimum SOC value, and the second duration from the minimum SOC value to the ending SOC value within a preset time length through the battery management system, which is not specifically limited here.

[0062] In order to facilitate those skilled in the art to more intuitively understand the starting SOC value, the ending SOC value, the maximum SOC value, the minimum SOC value, the first duration from the starting SOC value to the minimum SOC value, and the second duration from the minimum SOC value to the ending SOC value within the preset time length of the embodiment of the present application, the following is combined with Figure 2 Provide detailed explanation.

[0063] like Figure 2 As shown, the preset duration of the embodiment of the present application can be Figure 2 T in the figure is the time from the current moment to a certain moment before; the starting SOC value can be Figure 2 SOC1 in the T time period is the starting SOC; the ending SOC value can be Figure 2 SOC2 in the T time period is the final SOC; the maximum SOC value can be Figure 2 The SOCmax in the T time period is the maximum SOC; the minimum SOC value can be Figure 2 SOCmin in, that is, the minimum SOC in the T time period; the first duration can be Figure 2 The t1 in the figure is the time from SOC1 to SOCmin; the second duration can be Figure 2 The t2 in it is the time from SOCmin to SOC2.

[0064] In step S102, the battery charge change rate of the current vehicle is calculated according to the starting SOC value, ending SOC value, maximum SOC value, minimum SOC value, first duration and second duration within a preset time period, and the current power generation level is corrected based on the battery charge change rate to obtain the target power generation level.

[0065] Further, in some embodiments, the battery charge change rate of the current vehicle is calculated based on the starting SOC value, the ending SOC value, the maximum SOC value, the minimum SOC value, the first duration and the second duration within a preset time period, including: if the starting SOC value is less than the maximum SOC value, then determining whether the minimum SOC value is greater than a first preset threshold value; if the minimum SOC value is greater than the first preset threshold value, then calculating the first difference between the ending SOC value and the minimum SOC value, and obtaining the battery charge change rate of the current vehicle based on the ratio of the first difference to the second duration; otherwise, calculating the second difference between the minimum SOC value and the starting SOC value, and obtaining the battery charge change rate of the current vehicle based on the ratio of the second difference to the first duration.

[0066] Furthermore, in some embodiments, the battery charge change rate of the current vehicle is calculated based on the starting SOC value, the ending SOC value, the maximum SOC value, the minimum SOC value, the first duration and the second duration within a preset time period, and also includes: if the starting SOC value is greater than or equal to the maximum SOC value, then determining whether the minimum SOC value is greater than the second preset threshold value; if the minimum SOC value is greater than the second preset threshold value, then calculating the third difference between the ending SOC value and the starting SOC value, and obtaining the battery charge change rate of the current vehicle based on the ratio of the third difference to the preset time period; otherwise, calculating the fourth difference between the minimum SOC value and the starting SOC value, and obtaining the battery charge change rate of the current vehicle based on the ratio of the fourth difference to the first duration.

[0067] Among them, the first preset threshold value and the second preset threshold value can both be threshold values ​​calibrated based on the actual vehicle and the power battery installed in the actual vehicle, and are not specifically limited here.

[0068] Specifically, first, determine whether the starting SOC value is less than the maximum SOC value. If so, further determine whether the minimum SOC value is greater than the first preset threshold value. If the minimum SOC value is greater than the first preset threshold value, calculate the first difference between the ending SOC value and the minimum SOC value, and obtain the battery power change rate of the current vehicle according to the ratio of the first difference to the second duration, that is, the battery power change rate = (ending SOC value-minimum SOC value) / second duration. In addition, if the minimum SOC value is less than or equal to the first preset threshold value, calculate the second difference between the minimum SOC value and the starting SOC value, and obtain the battery power change rate of the current vehicle according to the ratio of the second difference to the first duration, that is, the battery power change rate = (minimum SOC value-starting SOC value) / first duration.

[0069] Further, if the starting SOC value is greater than or equal to the maximum SOC value, it is further determined whether the minimum SOC value is greater than the second preset threshold. If the minimum SOC value is greater than the second preset threshold, the third difference between the ending SOC value and the starting SOC value is calculated, and the battery charge change rate of the current vehicle is obtained according to the ratio of the third difference to the preset duration, that is, the battery charge change rate = (ending SOC value-starting SOC value) / preset duration. In addition, if the minimum SOC value is less than or equal to the second preset threshold, the fourth difference between the minimum SOC value and the starting SOC value is calculated, and the battery charge change rate of the current vehicle is obtained according to the ratio of the fourth difference to the first duration, that is, the battery charge change rate = (minimum SOC value-starting SOC value) / first duration.

[0070] In order to facilitate those skilled in the art to more clearly and intuitively understand the process of calculating the battery charge change rate of the current vehicle according to the starting SOC value, the ending SOC value, the maximum SOC value, the minimum SOC value, the first duration and the second duration within the preset time in the embodiment of the present application, the following is combined with Figure 2 and Figure 3 Provide detailed explanation.

[0071] by Figure 2 For example, the parameters in Figure 3 As shown, the process of the battery charge change rate algorithm includes the following steps:

[0072] S301, start.

[0073] S302, data acquisition: T, SOC1, SOC2, SOCmax, SOCmin, t1, t2.

[0074] S303, determine whether SOC2 is greater than SOC1, if yes, execute S304, otherwise, execute S307.

[0075] S304, determine whether SOCmin is greater than a first preset threshold, if yes, execute S305, otherwise, execute S306.

[0076] S305, vehicle power battery charge change rate = (SOC2-SOC1) / T.

[0077] S306, vehicle power battery charge change rate = (SOCmin-SOC1) / t1.

[0078] S307, determine whether SOCmin is greater than a second preset threshold, if yes, execute S308, otherwise, execute S309.

[0079] S308, vehicle power battery charge change rate = (SOC2-SOC1) / T.

[0080] S309, vehicle power battery charge change rate = (SOCmin-SOC1) / t1.

[0081] S310, end.

[0082] Furthermore, in some embodiments, the current power generation level is corrected based on the battery charge change rate, including: if the battery charge change rate is a positive number, the current power generation level is reduced based on a preset reduction strategy; if the battery charge change rate is a negative number, the current power generation level is increased based on a preset increase strategy.

[0083] Among them, the preset reduction strategy and the preset increase strategy can be strategies pre-set by technical personnel in this field. For example, the preset reduction strategy can be to set a fixed reduction step size, and the target power generation level = current power generation level - fixed reduction step size, which is not specifically limited here.

[0084] It is understandable that in order to ensure the current vehicle power conservation performance, it is necessary to reduce the charging level as much as possible to improve the comfort of the whole vehicle. Therefore, the embodiment of the present application realizes dynamic adjustment of the charging coefficient based on the recent power changes.

[0085] Specifically, when the vehicle power battery charge change rate is positive, it means that the battery charge is increasing, indicating that the current power generation is sufficient or even excessive. Therefore, the current power generation level can be reduced based on the preset reduction strategy to reduce the power generation, reduce unnecessary energy waste, and improve NVH performance.

[0086] Furthermore, when the vehicle power battery charge change rate is negative, it means that the battery charge is decreasing, indicating that the current power generation is insufficient. At this time, it is necessary to increase the current power generation level based on the preset increase strategy to increase the power generation, ensure the stability of the battery charge, and avoid the degradation of NVH performance due to insufficient power.

[0087] In step S103, the target power generation is calculated based on a preset power generation level-power generation MAP table and the target power generation level, and the current vehicle is controlled to generate power based on the target power generation.

[0088] Further, in some embodiments, the target power generation power is calculated based on a preset power generation level-power generation MAP table and a target power generation level, including: determining whether the target power generation level exists in the preset power generation level-power generation MAP table; if the target power generation level exists in the preset power generation level-power generation MAP table, then according to the target power generation level, looking up the target power generation power in the preset power generation level-power generation MAP table; if the target power generation level does not exist in the preset power generation level-power generation MAP table, then performing interpolation calculation based on the preset power generation level-power generation MAP table and the target power generation level to obtain the target power generation power.

[0089] Among them, the power generation level in the preset power generation level-power generation MAP table can be the power generation level set by technical personnel in this field according to the current vehicle model, for example, it can be a low power generation level, a medium power generation level and a high power generation level or a power generation level 1, a power generation level 2 and a power generation level 3, which are not specifically limited here. In addition, the embodiment of the present application can also be based on the matching of the whole vehicle and the engine, and from the dimensions of fuel consumption, NVH and power conservation performance, determine the power generation MAP of different power generation levels according to the vehicle speed and required power. Among them, the low power generation level MAP should focus on ensuring the energy consumption and NVH of the vehicle, the medium power generation level MAP should focus on ensuring NVH and power conservation, and the high power generation level 3 MAP should focus on ensuring power conservation.

[0090] Specifically, before calculating the target power generation, it is first necessary to determine whether the target power generation level exists in the preset power generation level-power generation MAP table. If the target power generation level exists in the preset power generation level-power generation MAP table, all power generation values ​​corresponding to the target power generation level can be found in the MAP table, and the target power generation can be determined based on the current vehicle speed and required power.

[0091] Furthermore, if the target power generation level does not exist in the preset power generation level-power generation MAP table, two power generation levels adjacent to the target power generation level are found in the MAP table, and the power generation values ​​corresponding to the two adjacent power generation levels are obtained according to the current vehicle speed and required power, and the target power generation corresponding to the target power generation level is calculated using the preset interpolation formula.

[0092] For example, assuming that the current target power generation level of the vehicle is 2.5, the preset power generation level-power generation MAP table is as follows:

[0093] Table 1

[0094] Power generation level Power generation (kW) 1 10 2 15 3 20

[0095] As shown in Table 1, the power generation corresponding to power generation level 2 is 15kW, and the power generation corresponding to power generation level 3 is 20kW. The target power generation P can be obtained by using the linear interpolation formula: target P target =15+(20 -15)×(2.5 -2)=15+5×0.5=17.5kW, and the vehicle is controlled to generate electricity at a power of 17.5kW.

[0096] In addition, the embodiments of the present application can also apply the above calculation results to actual vehicles, conduct multiple tests, record data, and analyze results. If the NVH performance is poor or the power conservation performance is insufficient under certain working conditions, the calibration map table or correction rules can be optimized and adjusted until the best balance is achieved.

[0097] In order to facilitate those skilled in the art to more clearly and intuitively understand the vehicle power generation control method proposed in this application, the following is combined with Figure 4 Provide detailed explanation.

[0098] like Figure 4 As shown, the vehicle power generation control method includes the following steps:

[0099] S401, determine the number of basic power generation levels and the calibration map corresponding to each power generation level.

[0100] S402, determining a current power generation level corresponding to the current vehicle state based on a basic strategy.

[0101] S403, calculating the rate of change of the power battery of the entire vehicle and correcting the current power generation level.

[0102] S404: Calculate and output the vehicle power generation demand based on the calibration map corresponding to each level and the corrected power generation level.

[0103] According to the vehicle power generation control method proposed in the embodiment of the present application, the battery charge change rate of the current vehicle is calculated according to the starting SOC value, the ending SOC value, the maximum SOC value, the minimum SOC value, the first continuous time from the starting SOC value to the minimum SOC value, and the second continuous time from the minimum SOC value to the ending SOC value within the preset time, and the current power generation level is corrected to obtain the target power generation level; the target power generation power is calculated based on the preset power generation level-power generation power MAP table and the target power generation level, and the current vehicle is controlled to generate power based on the target power generation power. In this way, the problems of high cost, complex strategy and poor replicability of the existing technology are solved. By introducing the power change rate variable to dynamically adjust the power generation level, the NVH performance of the whole vehicle is improved under the premise of ensuring the power conservation performance, and the driving experience of the user is optimized.

[0104] Next, the vehicle power generation control device proposed according to the embodiment of the present application is described with reference to the accompanying drawings.

[0105] Figure 5 It is a block diagram of a vehicle power generation control device according to an embodiment of the present application.

[0106] like Figure 5 As shown, the vehicle power generation control device 10 includes: an acquisition module 100 , a calculation and correction module 200 and a control module 300 .

[0107] Among them, the acquisition module 100 is used to obtain the current power generation level of the current vehicle, the starting SOC value, the ending SOC value, the maximum SOC value, the minimum SOC value, the first continuous time from the starting SOC value to the minimum SOC value, and the second continuous time from the minimum SOC value to the ending SOC value within a preset time; the calculation and correction module 200 is used to calculate the battery power change rate of the current vehicle according to the starting SOC value, the ending SOC value, the maximum SOC value, the minimum SOC value, the first continuous time and the second continuous time within the preset time, and correct the current power generation level based on the battery power change rate to obtain the target power generation level; the control module 300 is used to calculate the target power generation power based on the preset power generation level-power generation power MAP table and the target power generation level, and control the current vehicle to generate electricity based on the target power generation power.

[0108] Furthermore, in some embodiments, the calculation and correction module 200 is used to: if the starting SOC value is less than the maximum SOC value, determine whether the minimum SOC value is greater than a first preset threshold value; if the minimum SOC value is greater than the first preset threshold value, calculate the first difference between the ending SOC value and the minimum SOC value, and obtain the battery charge change rate of the current vehicle based on the ratio of the first difference to the second duration; otherwise, calculate the second difference between the minimum SOC value and the starting SOC value, and obtain the battery charge change rate of the current vehicle based on the ratio of the second difference to the first duration.

[0109] Furthermore, in some embodiments, the calculation and correction module 200 is also used to: if the starting SOC value is greater than or equal to the maximum SOC value, determine whether the minimum SOC value is greater than a second preset threshold value; if the minimum SOC value is greater than the second preset threshold value, calculate a third difference between the ending SOC value and the starting SOC value, and obtain the battery charge change rate of the current vehicle based on the ratio of the third difference to the preset duration; otherwise, calculate a fourth difference between the minimum SOC value and the starting SOC value, and obtain the battery charge change rate of the current vehicle based on the ratio of the fourth difference to the first duration.

[0110] Furthermore, in some embodiments, the calculation and correction module 200 is used to: if the battery power change rate is a positive number, reduce the current power generation level based on a preset reduction strategy; if the battery power change rate is a negative number, increase the current power generation level based on a preset increase strategy.

[0111] Furthermore, in some embodiments, the control module 300 is used to: determine whether the target power generation level exists in the preset power generation level-power generation MAP table; if the target power generation level exists in the preset power generation level-power generation MAP table, then according to the target power generation level, look up the preset power generation level-power generation MAP table to obtain the target power generation; if the target power generation level does not exist in the preset power generation level-power generation MAP table, then perform interpolation calculation based on the preset power generation level-power generation MAP table and the target power generation level to obtain the target power generation.

[0112] It should be noted that the above explanation of the embodiment of the vehicle power generation control method is also applicable to the vehicle power generation control device of this embodiment, and will not be repeated here.

[0113] According to the vehicle power generation control device proposed in the embodiment of the present application, the battery charge change rate of the current vehicle is calculated according to the starting SOC value, the ending SOC value, the maximum SOC value, the minimum SOC value, the first continuous time from the starting SOC value to the minimum SOC value, and the second continuous time from the minimum SOC value to the ending SOC value within the preset time, and the current power generation level is corrected to obtain the target power generation level; the target power generation power is calculated based on the preset power generation level-power generation power MAP table and the target power generation level, and the current vehicle is controlled to generate power based on the target power generation power. In this way, the problems of high cost, complex strategy and poor replicability of the existing technology are solved. By introducing the power change rate variable to dynamically adjust the power generation level, the NVH performance of the whole vehicle is improved under the premise of ensuring the power conservation performance, and the driving experience of the user is optimized.

[0114] Figure 6 A schematic diagram of the structure of a vehicle provided in an embodiment of the present application. The vehicle may include:

[0115] A memory 601 , a processor 602 , and a computer program stored in the memory 601 and executable on the processor 602 .

[0116] When the processor 602 executes the program, the vehicle power generation control method provided in the above embodiment is implemented.

[0117] Furthermore, the vehicle also includes:

[0118] The communication interface 603 is used for communication between the memory 601 and the processor 602 .

[0119] The memory 601 is used to store computer programs that can be executed on the processor 602 .

[0120] The memory 601 may include a high-speed RAM memory, and may also include a non-volatile memory (non-volatile memory), such as at least one disk memory.

[0121] If the memory 601, the processor 602 and the communication interface 603 are implemented independently, the communication interface 603, the memory 601 and the processor 602 can be connected to each other through a bus and communicate with each other. The bus can be an Industry Standard Architecture (ISA) bus, a Peripheral Component Interconnect (PCI) bus or an Extended Industry Standard Architecture (EISA) bus. The bus can be divided into an address bus, a data bus, a control bus, etc. For ease of representation, Figure 6 Only one thick line is used in the diagram, but this does not mean that there is only one bus or only one type of bus.

[0122] Optionally, in a specific implementation, if the memory 601, the processor 602 and the communication interface 603 are integrated on a chip, the memory 601, the processor 602 and the communication interface 603 can communicate with each other through an internal interface.

[0123] The processor 602 may be a central processing unit (CPU), or an application specific integrated circuit (ASIC), or one or more integrated circuits configured to implement the embodiments of the present application.

[0124] An embodiment of the present application also provides a computer-readable storage medium on which a computer program is stored. When the program is executed by a processor, the above-mentioned vehicle power generation control method is implemented.

[0125] In the description of this specification, the description with reference to the terms "one embodiment", "some embodiments", "example", "specific example", or "some examples" etc. means that the specific features, structures, materials or characteristics described in conjunction with the embodiment or example are included in at least one embodiment or example of the present application. In this specification, the schematic representations of the above terms do not necessarily refer to the same embodiment or example. Moreover, the specific features, structures, materials or characteristics described may be combined in any one or N embodiments or examples in a suitable manner. In addition, those skilled in the art may combine and combine the different embodiments or examples described in this specification and the features of the different embodiments or examples, without contradiction.

[0126] In addition, the terms "first" and "second" are used for descriptive purposes only and should not be understood as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Therefore, a feature defined as "first" or "second" may explicitly or implicitly include at least one of the features. In the description of this application, "N" means at least two, such as two, three, etc., unless otherwise clearly and specifically defined.

[0127] Any process or method description in a flowchart or otherwise described herein may be understood to represent a module, fragment or portion of code comprising one or more executable instructions for implementing the steps of a custom logical function or process, and the scope of the preferred embodiments of the present application includes alternative implementations in which functions may not be performed in the order shown or discussed, including performing functions in a substantially simultaneous manner or in reverse order depending on the functions involved, which should be understood by technicians in the technical field to which the embodiments of the present application belong.

[0128] The logic and / or steps represented in the flowchart or otherwise described herein, for example, can be considered as an ordered list of executable instructions for implementing logical functions, and can be embodied in any computer-readable medium for use by an instruction execution system, device or apparatus (such as a computer-based system, a system including a processor, or other system that can fetch instructions from an instruction execution system, device or apparatus and execute instructions), or in combination with these instruction execution systems, devices or apparatuses. For the purpose of this specification, "computer-readable medium" can be any device that can contain, store, communicate, propagate or transmit a program for use by an instruction execution system, device or apparatus, or in combination with these instruction execution systems, devices or apparatuses. More specific examples of computer-readable media (a non-exhaustive list) include the following: an electrical connection with one or N wirings (electronic devices), a portable computer disk box (magnetic device), a random access memory (RAM), a read-only memory (ROM), an erasable and programmable read-only memory (EPROM or flash memory), a fiber optic device, and a portable compact disk read-only memory (CDROM). In addition, the computer-readable medium may even be paper or other suitable medium on which the program is printed, since the program may be obtained electronically, for example, by optically scanning the paper or other medium and then editing, interpreting or processing in other suitable ways if necessary, and then stored in a computer memory.

[0129] It should be understood that the various parts of the present application can be implemented by hardware, software, firmware or a combination thereof. In the above-mentioned embodiment, the N steps or methods can be implemented by software or firmware stored in a memory and executed by a suitable instruction execution system. For example, if implemented by hardware, as in another embodiment, it can be implemented by any one of the following technologies known in the art or their combination: a discrete logic circuit having a logic gate circuit for implementing a logic function for a data signal, a dedicated integrated circuit having a suitable combination of logic gate circuits, a programmable gate array (PGA), a field programmable gate array (FPGA), etc.

[0130] A person skilled in the art may understand that all or part of the steps in the method for implementing the above-mentioned embodiment may be completed by instructing related hardware through a program, and the program may be stored in a computer-readable storage medium, which, when executed, includes one or a combination of the steps of the method embodiment.

[0131] In addition, each functional unit in each embodiment of the present application may be integrated into a processing module, or each unit may exist physically separately, or two or more units may be integrated into one module. The above-mentioned integrated module may be implemented in the form of hardware or in the form of a software functional module. If the integrated module is implemented in the form of a software functional module and sold or used as an independent product, it may also be stored in a computer-readable storage medium.

[0132] The storage medium mentioned above may be a read-only memory, a magnetic disk or an optical disk, etc. Although the embodiments of the present application have been shown and described above, it can be understood that the above embodiments are exemplary and cannot be understood as limiting the present application. A person of ordinary skill in the art may change, modify, replace and modify the above embodiments within the scope of the present application.

Claims

1. A vehicle power generation control method, characterized in that: The following steps are involved: Obtaining a current power generation level of the current vehicle, a starting SOC value within a preset time period, an ending SOC value, a maximum SOC value, a minimum SOC value, a first duration from the starting SOC value to the minimum SOC value, and a second duration from the minimum SOC value to the ending SOC value; Calculating a battery power change rate of the current vehicle according to a starting SOC value, an ending SOC value, a maximum SOC value, a minimum SOC value, the first duration, and the second duration within the preset duration, and correcting the current power generation level based on the battery power change rate to obtain a target power generation level; A target power generation power is calculated based on a preset power generation level-power generation power MAP table and the target power generation level, and the current vehicle is controlled to generate power based on the target power generation power.

2. The method according to claim 1, characterized in that The calculating the battery power change rate of the current vehicle according to the starting SOC value, the ending SOC value, the maximum SOC value, the minimum SOC value, the first duration and the second duration within the preset time period includes: If the starting SOC value is less than the maximum SOC value, determining whether the minimum SOC value is greater than a first preset threshold; If the minimum SOC value is greater than the first preset threshold, the first difference between the termination SOC value and the minimum SOC value is calculated, and the battery charge change rate of the current vehicle is obtained based on the ratio of the first difference to the second duration; otherwise, the second difference between the minimum SOC value and the starting SOC value is calculated, and the battery charge change rate of the current vehicle is obtained based on the ratio of the second difference to the first duration.

3. The method according to claim 2, characterized in that The method of calculating the battery power change rate of the current vehicle according to the starting SOC value, the ending SOC value, the maximum SOC value, the minimum SOC value, the first duration and the second duration within the preset time period further includes: If the starting SOC value is greater than or equal to the maximum SOC value, determining whether the minimum SOC value is greater than a second preset threshold; If the minimum SOC value is greater than the second preset threshold, the third difference between the ending SOC value and the starting SOC value is calculated, and the battery charge change rate of the current vehicle is obtained based on the ratio of the third difference to the preset duration; otherwise, the fourth difference between the minimum SOC value and the starting SOC value is calculated, and the battery charge change rate of the current vehicle is obtained based on the ratio of the fourth difference to the first duration.

4. The method according to claim 1, characterized in that: The correcting the current power generation level based on the battery power change rate includes: If the battery power change rate is a positive number, reducing the current power generation level based on a preset reduction strategy; If the battery power change rate is a negative number, the current power generation level is increased based on a preset increase strategy.

5. The method according to claim 1, characterized in that The calculating the target power generation power based on the preset power generation level-power generation power MAP table and the target power generation level includes: Determine whether the target power generation level exists in the preset power generation level-power generation power MAP table; If the target power generation level exists in the preset power generation level-power generation MAP table, then according to the target power generation level, the target power generation is obtained by looking up the preset power generation level-power generation MAP table; If the target power generation level does not exist in the preset power generation level-power generation MAP table, an interpolation calculation is performed based on the preset power generation level-power generation MAP table and the target power generation level to obtain the target power generation.

6. A vehicle power generation control device, characterized in that: include: An acquisition module, used to acquire a current power generation level of the current vehicle, a starting SOC value within a preset time, an ending SOC value, a maximum SOC value, a minimum SOC value, a first duration from the starting SOC value to the minimum SOC value, and a second duration from the minimum SOC value to the ending SOC value; a calculation and correction module, configured to calculate a battery power change rate of the current vehicle according to a starting SOC value, an ending SOC value, a maximum SOC value, a minimum SOC value, the first duration, and the second duration within the preset duration, and to correct the current power generation level based on the battery power change rate to obtain a target power generation level; The control module is used to calculate the target power generation based on a preset power generation level-power generation MAP table and the target power generation level, and control the current vehicle to generate power based on the target power generation.

7. The device according to claim 6, characterized in that The calculation and correction module is used to: If the starting SOC value is less than the maximum SOC value, determining whether the minimum SOC value is greater than a first preset threshold; If the minimum SOC value is greater than the first preset threshold, the first difference between the termination SOC value and the minimum SOC value is calculated, and the battery charge change rate of the current vehicle is obtained based on the ratio of the first difference to the second duration; otherwise, the second difference between the minimum SOC value and the starting SOC value is calculated, and the battery charge change rate of the current vehicle is obtained based on the ratio of the second difference to the first duration.

8. The device according to claim 7, characterized in that The calculation and correction module is also used for: If the starting SOC value is greater than or equal to the maximum SOC value, determining whether the minimum SOC value is greater than a second preset threshold; If the minimum SOC value is greater than the second preset threshold, the third difference between the ending SOC value and the starting SOC value is calculated, and the battery charge change rate of the current vehicle is obtained based on the ratio of the third difference to the preset duration; otherwise, the fourth difference between the minimum SOC value and the starting SOC value is calculated, and the battery charge change rate of the current vehicle is obtained based on the ratio of the fourth difference to the first duration.

9. A vehicle, characterized in that: include: A memory, a processor, and a computer program stored in the memory and executable on the processor, wherein the processor executes the program to implement the vehicle power generation control method according to any one of claims 1 to 5.

10. A computer-readable storage medium having a computer program stored thereon, characterized in that: The program is executed by a processor to implement the vehicle power generation control method according to any one of claims 1 to 5.

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