Method, device, equipment and storage medium for adjusting starting state of charge of range extender

Abstract

The present application relates to a method, device, equipment and storage medium for adjusting the startup state of charge of a range extender, the method comprising obtaining the pure electric mileage and total mileage of the range extender vehicle within a statistical period, and obtaining the pure electric driving ratio; determining a cost evaluation value based on the fuel consumption unit price, electricity consumption unit price and pure electric driving ratio per unit distance, wherein the cost evaluation value is negatively correlated with the average cost per unit distance within the statistical period; adjusting the startup state of charge of the range extender based on the cost evaluation value, including lowering the startup state of charge when the cost evaluation value is greater than the evaluation reference value and the electricity consumption unit price is less than the fuel consumption unit price. The method of the present application can improve the problem in the prior art that the startup SOC of the range extender does not conform to the vehicle usage scenario and cannot meet the user's demand for low-cost vehicle use.

Description

Technical Field

[0001] The present application relates to the field of vehicle control technology, and in particular to a method, device, equipment and storage medium for adjusting the startup state of charge of a range extender. Background Art

[0002] The starting SOC (State of Charge) of the range extender of an extended-range electric vehicle determines the vehicle's pure electric range and power.

[0003] Usually, the starting SOC is a fixed value and cannot flexibly match the user's vehicle usage scenario. In particular, the vehicle cost issue is not well considered, so that when the range extender operates under unreasonable starting SOC conditions, the vehicle cost may be high, which cannot meet the user's demand for low-cost vehicle use. Summary of the invention

[0004] Based on this, a method, device, computer equipment and storage medium for adjusting the startup state of charge of a range extender are provided to improve the problem in the prior art that the startup SOC of the range extender does not conform to the vehicle usage scenario and cannot meet the user's demand for low-cost vehicle use.

[0005] On the one hand, a method for adjusting the startup state of charge of a range extender is provided, comprising:

[0006] Obtain the pure electric mileage and total mileage of the extended-range vehicle during the statistical period, and obtain the pure electric driving ratio;

[0007] Determine a cost evaluation value based on the unit price of fuel consumption per unit distance traveled, the unit price of electricity consumption, and the proportion of pure electric driving, wherein the cost evaluation value is negatively correlated with the average cost per unit distance during the statistical period;

[0008] The starting state of charge of the range extender is adjusted according to the cost evaluation value, including lowering the starting state of charge when the cost evaluation value is greater than an evaluation reference value and the unit price of electricity consumption is less than the unit price of oil consumption.

[0009] In one embodiment, determining the cost evaluation value includes:

[0010] When the electricity consumption unit price is less than the oil consumption unit price, determining the theoretical minimum cost per unit distance traveled according to the electricity consumption unit price;

[0011] Determine the average cost per unit distance traveled based on the unit price of fuel consumption per unit distance traveled, the unit price of electricity consumption per unit distance traveled, and the proportion of pure electric driving;

[0012] The cost evaluation value is determined according to the cost difference between the average cost and the theoretical minimum cost, and the cost evaluation value is negatively correlated with the cost difference.

[0013] In one embodiment, determining the cost evaluation value includes:

[0014] The cost evaluation value is determined according to the following first mathematical expression:

[0015]

[0016] Among them, A is the cost evaluation value, a is the end value of the cost evaluation value, p1 is the coefficient, E is the electricity consumption cost per unit distance traveled, F is the fuel consumption cost per unit distance traveled, PCT is the pure electric driving ratio, and M is a constant.

[0017] In one embodiment, the method for adjusting the startup state of charge of the range extender further includes:

[0018] Obtaining the average cell temperature of the vehicle cell during the statistical period, wherein the average cell temperature is the average cell temperature during the first driving of each day during the statistical period;

[0019] Determining a target 100 km / h acceleration time from a mapping relationship between temperature and acceleration time according to the average temperature of the battery cells;

[0020] Determining an acceleration evaluation value according to the target 100 km / h acceleration time, wherein the acceleration evaluation value is negatively correlated with the target 100 km / h acceleration time;

[0021] Determining a comprehensive evaluation value according to the weighting of the cost evaluation value and the acceleration evaluation value;

[0022] The starting state of charge of the range extender is adjusted according to the comprehensive evaluation value, including lowering the starting state of charge of the range extender when the comprehensive evaluation value is greater than the comprehensive evaluation reference value; and raising the starting state of charge of the range extender when the comprehensive evaluation value is less than the comprehensive evaluation reference value.

[0023] In one embodiment, the acceleration evaluation value is determined according to the following second mathematical expression:

[0024]

[0025] Wherein, B is the acceleration evaluation value, b is the upper limit value of the acceleration evaluation value, p2 is the coefficient, T avg is the target 100 km / h acceleration time, T 100 is the benchmark time for acceleration from 0 to 100 km / h, and N is a constant.

[0026] In one embodiment, the method for adjusting the startup state of charge of the range extender further includes:

[0027] Obtaining the number of times the driving demand power is greater than the battery allowable discharge power within a statistical period, wherein the driving demand power is determined according to the wheel end demand torque, vehicle speed, and wheel rolling radius;

[0028] Determining a power evaluation value according to the number of times, wherein the power evaluation value is negatively correlated with the number of times;

[0029] Determining a comprehensive evaluation value according to the weighting of the power evaluation value and the cost evaluation value;

[0030] The starting state of charge of the range extender is adjusted according to the comprehensive evaluation value, including lowering the starting state of charge of the range extender when the comprehensive evaluation value is greater than the comprehensive evaluation reference value; and raising the starting state of charge of the range extender when the comprehensive evaluation value is less than the comprehensive evaluation reference value.

[0031] In one embodiment, the method for adjusting the startup state of charge of the range extender further includes:

[0032] The comprehensive evaluation value is determined according to weighting of the cost evaluation value, the acceleration evaluation value, and the power evaluation value.

[0033] In one embodiment, adjusting the startup charge state of the range extender according to the comprehensive evaluation value further includes:

[0034] According to the difference between the comprehensive evaluation value and the comprehensive evaluation reference value, the startup charge state of the range extender is adjusted according to a gradient.

[0035] On the other hand, a device for adjusting the startup state of charge of a range extender is provided, the device comprising:

[0036] A preprocessing module is used to obtain the pure electric driving mileage and total driving mileage of the extended-range vehicle during the statistical period, and obtain the pure electric driving ratio;

[0037] An evaluation module, used to determine a cost evaluation value according to a unit price of fuel consumption per unit distance traveled, a unit price of electricity consumption, and a proportion of pure electric driving, wherein the cost evaluation value is negatively correlated with an average cost per unit distance during a statistical period;

[0038] The adjustment module is used to adjust the startup charge state of the range extender according to the cost evaluation value, including lowering the startup charge state when the cost evaluation value is greater than the evaluation reference value and if the electricity consumption unit price is less than the oil consumption unit price.

[0039] In yet another aspect, a computer device is provided, comprising a memory, a processor, and a computer program stored in the memory and executable on the processor, wherein the steps of the method are implemented when the processor executes the computer program.

[0040] A computer-readable storage medium is also provided, on which a computer program is stored, and when the computer program is executed by a processor, the steps of the method described are implemented.

[0041] The above-mentioned method, device, computer equipment and storage medium for adjusting the starting state of charge of the range extender obtain the proportion of pure electric driving based on the statistics of the pure electric driving mileage and total mileage of the extended-range vehicle within the statistical period, and then calculate the cost evaluation value reflecting the average cost per unit distance based on the unit price of fuel consumption, the unit price of electricity consumption and the proportion of pure electric driving. The starting SOC of the vehicle range extender is adjusted according to the cost evaluation value. If the cost evaluation value is large, it indicates that the user prefers to use the vehicle at a low cost. In this case, the starting SOC will be lowered so that the range extender is started only under a lower SOC condition, thereby improving the use of electric energy with a lower unit price, thereby realizing the user's low-cost vehicle use demand. BRIEF DESCRIPTION OF THE DRAWINGS

[0042] Figure 1 1. is an application environment diagram of a method for adjusting the startup state of charge of a range extender in one embodiment;

[0043] Figure 2 It is a schematic flow chart of a method for adjusting the startup state of charge of a range extender in one embodiment;

[0044] Figure 3 A schematic diagram of a process for adjusting the startup state of charge based on acceleration evaluation in one embodiment;

[0045] Figure 4 A schematic diagram of a process for adjusting the startup state of charge based on power evaluation in one embodiment;

[0046] Figure 5 It is a structural block diagram of a startup charge state adjustment device of a range extender in one embodiment;

[0047] Figure 6 FIG. 4 is a diagram showing the internal structure of a computer device in one embodiment. DETAILED DESCRIPTION

[0048] In order to make the purpose, technical solution and advantages of the present application more clearly understood, the present application is further described in detail below in conjunction with the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are only used to explain the present application and are not used to limit the present application.

[0049] Extended-range vehicles can switch between pure electric drive and range extender generator drive. On the one hand, users can flexibly choose the type of energy to meet the needs of long-distance or short-distance endurance. On the other hand, users can also flexibly adjust the use of different energy sources to meet their own comprehensive needs for vehicle use and driving performance.

[0050] The time when the vehicle starts to consume fuel can be changed by adjusting the start-up SOC of the range extender. Some users may charge frequently and hope to have a lower start-up SOC of the range extender to increase the pure electric range and reduce the cost of using the vehicle. However, some users who are not convenient to charge hope to increase the start-up SOC of the range extender to improve the vehicle's power. If a single fixed start-up SOC is used, it will be difficult to meet the needs of different scenarios.

[0051] The startup state of charge adjustment method of the range extender provided in this application can adjust the startup SOC based on the vehicle cost evaluation, so that the startup SOC can flexibly meet the scene requirements. The method of this application can be applied to Figure 1 In the application environment shown. Among them, the terminal 102 communicates with the server 104 through the network. The terminal collects and obtains the driving data of the vehicle, including but not limited to the driving type, energy consumption data, mileage, travel time, etc. of the vehicle, and uploads it to the server. The server calculates and obtains the adjusted startup SOC and sends it to the terminal for the vehicle to execute according to the adjusted startup SOC. Among them, the terminal 102 can be a vehicle-mounted terminal, a driving computer, etc., and the server 104 can be implemented by an independent server or a server cluster composed of multiple servers.

[0052] In one embodiment, Figure 2 As shown, a method for adjusting the starting state of charge of a range extender is provided, and the method is applied to Figure 1 The server in the example is used to illustrate the following steps:

[0053] Step 201, obtaining the pure electric driving mileage and total driving mileage of the extended-range vehicle during the statistical period, and obtaining the pure electric driving ratio.

[0054] For example, the statistical period is one week, and the vehicle calculates the daily pure electric mileage and uploads it to the cloud, which classifies it from Monday to Sunday, recorded as S E1 , S E1 ……S E7 .

[0055] It can be understood that the pure electric driving mileage refers to the mileage used for driving by the electricity obtained by external charging, and the mileage used for driving by the electricity generated by the range extender is regarded as fuel mileage.

[0056] The vehicle also calculates the total mileage per day and uploads it to the cloud, which classifies it from Monday to Sunday and records it as S1, S1...S7. After receiving it, the cloud calculates the total mileage for the week S = S1+S2+...+S7 and the pure electric mileage S E =S E1 +S E2 +……+S E7 Calculate the proportion of pure electric driving

[0057] Step 202, determining a cost evaluation value according to the unit price of fuel consumption per unit distance traveled, the unit price of electricity consumption, and the proportion of pure electric driving.

[0058] For example, for a unit distance of 1 km, the cloud calculates the vehicle's pure electric driving cost per kilometer as E, and the range extender driving cost per kilometer as F based on the vehicle's power consumption, fuel consumption, electricity price, and fuel price. Based on a week's data, the average travel cost per kilometer is used as the evaluation basis. The average cost per unit distance has the following trend:

[0059] Generally speaking, if the unit price of electricity consumption E is less than the unit price of fuel consumption F, the greater the proportion of pure electric driving, the lower the total cost and the average cost will be lower; conversely, the smaller the proportion of pure electric driving, the higher the average cost will be.

[0060] In this implementation, the cost evaluation value is negatively correlated with the average cost.

[0061] As an implementation of this embodiment, the theoretical minimum cost per unit distance is further calculated to obtain the difference between the average cost and the theoretical minimum cost to evaluate the cost of using the car within this week. Specifically:

[0062] Generally, the cost evaluation value is determined according to the following mathematical expression:

[0063]

[0064] Among them, A is the cost evaluation value, a is the end value of the cost evaluation value, p1 is the coefficient, and M is a constant.

[0065] In the above mathematical expression, the cost of pure electric driving throughout the journey is the lowest cost. Every time the proportion of the theoretical difference increases by M, the cost evaluation value decreases by p1.

[0066] The above mathematical expression is converted into the following:

[0067]

[0068] Exemplarily, the following mathematical expression is established to calculate the cost evaluation value:

[0069]

[0070] It can be seen that the cost evaluation value is jointly affected by the unit price of fuel consumption, the unit price of electricity consumption, and the proportion of pure electric driving; if changes in the unit price of fuel consumption, the unit price of electricity consumption, and the proportion of pure electric driving lead to an increase in the average cost per unit distance, it will lead to a decrease in the cost evaluation value.

[0071] Step 103: adjusting the starting state of charge of the range extender according to the cost evaluation value.

[0072] If the cost evaluation value is large, it means that the user is accustomed to using the car at a lower travel cost. In this case, the adjustment of the starting SOC of the range extender should give priority to the use of energy types with lower costs. Therefore, when the unit price of electricity consumption E is less than the unit price of fuel consumption F, it is obviously more advantageous to travel by pure electricity, so the starting SOC should be lowered.

[0073] In one implementation, the cost evaluation value of the previous statistical period is used as the evaluation benchmark value. If the cost evaluation value of the current statistical period is greater than the cost evaluation value of the previous statistical period, the user has more pure electric driving behavior than before. In order to meet the user's pure electric driving needs and reduce the cost of using the vehicle, the starting charge state will be lowered so that the range extender will only start when the SOC is lower.

[0074] By adopting the above method, the cost evaluation value is used to reflect the impact of the unit price of fuel consumption, the unit price of electricity consumption and the proportion of pure electric driving on the average cost per unit distance. When the cost evaluation value is larger, it means that it is more advantageous to use pure electric vehicles with lower cost unit price, so the starting SOC is lowered to reduce the cost of using the vehicle.

[0075] In one embodiment, the acceleration performance of the vehicle is also evaluated, and the startup SOC is adjusted based on the comprehensive acceleration performance and cost evaluation.

[0076] The acceleration performance of a vehicle is related to the ambient temperature. Specifically, the ambient temperature affects the battery cell temperature and thus affects the acceleration performance. In this embodiment, the 100 km acceleration performance of the vehicle is evaluated based on the battery cell temperature when the vehicle is first driven every day. Figure 3 As shown, the following steps are included:

[0077] Step 301, obtaining the average cell temperature of the vehicle cell within the statistical period. For example, when the vehicle is driven for the first time every day, the cell temperatures uploaded by each temperature sensor in the power battery are collected to calculate the average value, which is uploaded to the cloud. The cloud classifies the cells from Monday to Sunday as T1, T2...T7. The cloud receives the data and calculates the average cell temperature T for the week. avg .

[0078] Step 302 : determining a target 0-100 km / h acceleration time from a mapping relationship between temperature and acceleration time according to the average temperature of the battery cells.

[0079] The cloud stores the mapping relationship between temperature and acceleration time. When the power battery SOC is set to 50%, the acceleration time of the actual vehicle at different battery temperatures is measured to obtain the mapping relationship.

[0080] At the end of the statistical period, the cloud can calculate the average cell temperature T avg Find the corresponding target 0-100km / h acceleration time.

[0081] Step 303, determining an acceleration evaluation value according to the target 100 km / h acceleration time. The longer the 100 km / h acceleration time is, the lower the acceleration evaluation value is.

[0082] In one embodiment, the acceleration time t100 km / h at room temperature (25°C) is 100 As a benchmark for the acceleration evaluation, the acceleration evaluation value B is determined according to the following second mathematical expression:

[0083]

[0084] b is the upper limit value of the acceleration evaluation value, and p2 is the coefficient.

[0085] Specifically, set the range of B to [0, 100] and define:

[0086]

[0087] In the above mathematical expression, for every N increase in the 0-100km / h acceleration time above the base time, the acceleration rating value decreases by 10.

[0088] Step 304, after obtaining the cost evaluation value and the acceleration evaluation value, a comprehensive evaluation value is determined by weighting the two, and then the starting charge state of the range extender is adjusted according to the comprehensive evaluation value.

[0089] The higher the comprehensive evaluation value, the more likely the user is to expect to use the vehicle at a lower travel cost, or the vehicle's acceleration performance is less affected by the ambient temperature, which is conducive to increasing the utilization of electric energy. Based on this, a comprehensive evaluation benchmark value is set, such as the comprehensive evaluation value of the previous statistical period. When the comprehensive evaluation value is greater than the comprehensive evaluation benchmark value, the startup state of charge of the range extender is lowered; when the comprehensive evaluation value is less than the comprehensive evaluation benchmark value, the startup state of charge of the range extender is increased.

[0090] In one embodiment, whether the current startup SOC is reasonable is evaluated based on the comparison between the required power and the battery capacity during driving, such as Figure 4 As shown, the steps are as follows:

[0091] Step 401, obtaining the number of times that the driving demand power is greater than the battery allowable discharge power within a statistical period.

[0092] Driving demand power P d according to Calculated, Tq is the wheel end required torque, obtained by the driver torque analysis module; V is the vehicle speed, and r is the wheel rolling radius.

[0093] Obtain the power battery's allowable discharge power P from the battery management controller b , when P d >P b Lasts for 1 second, and the number k increases by 1.

[0094] Step 402, determining a power evaluation value according to the number of times.

[0095] It can be understood that the more times the required power exceeds the battery capacity, the worse the current vehicle power performance is, so the evaluation is lower. Therefore, the power evaluation value is negatively correlated with the number of times.

[0096] In the actual implementation process, the total mileage S of different statistical cycles is different, so it is averaged and the number of times the driver's required power exceeds the allowable discharge power of the power battery per 10 kilometers is used as an evaluation index.

[0097] The power rating is determined according to the following mathematical expression:

[0098]

[0099] Where Q is a constant.

[0100] In the above mathematical expression, the power evaluation value range is [0, 100], and the power evaluation value decreases by 10 every time the number n increases by Q.

[0101] Step 403: Determine a comprehensive evaluation value based on the weighted power evaluation value and the cost evaluation value, and adjust the startup charge state of the range extender based on the comprehensive evaluation value.

[0102] The more times n is, the smaller the power evaluation value C is, which indicates that the current vehicle's pure electric driving is difficult to meet the user's demand for power. Therefore, the smaller the comprehensive evaluation value is, the higher the starting SOC should be.

[0103] In this embodiment, the comprehensive evaluation value of the previous statistical period is used as the comprehensive evaluation reference value. When the comprehensive evaluation value of the current statistical period is greater than the comprehensive evaluation reference value, the startup state of charge of the range extender is lowered; when it is less than the comprehensive evaluation reference value, the startup state of charge of the range extender is increased.

[0104] By weighting the cost evaluation value and the power evaluation value, the economy and power can be comprehensively considered.

[0105] During actual implementation, the aforementioned cost evaluation value, acceleration evaluation value, and power evaluation value may be weighted to determine a comprehensive evaluation value, taking into account multiple influences of the vehicle during driving.

[0106] In one embodiment, the weights of the cost evaluation value, the acceleration evaluation value, and the power evaluation value are 40%, 30%, and 30% respectively, and the comprehensive evaluation value J=0.4*A+0.3*B+0.3*C is calculated.

[0107] In the process of adjusting the startup SOC, it can be done in a gradient. For example, the comprehensive evaluation value Jz of the previous week is used as a benchmark:

[0108] J-Jz≥20, the startup SOC decreased by 10% compared with the previous week;

[0109] 20>J-Jz≥10, the startup SOC decreases by 5% compared with the previous week;

[0110] 10>J-Jz>-10, the startup SOC remains unchanged compared with the previous week;

[0111] -10≥J-Jz>-20, the startup SOC increased by 5% compared with the previous week;

[0112] J-Jz≥-20, the startup SOC increases by 10% compared with the previous week.

[0113] The weekly startup SOC adjustment range shall not exceed 10%.

[0114] Furthermore, the maximum range of the range extender startup SOC is set to [10%, 80%]. If the adjusted range extender startup SOC value exceeds this range, the boundary value is taken.

[0115] It should be understood that although Figure 2-Figure 4 The steps in the flowchart are shown in sequence as indicated by the arrows, but these steps are not necessarily executed in the order indicated by the arrows. Unless otherwise specified in this document, there is no strict order restriction for the execution of these steps, and these steps can be executed in other orders. Figure 2-Figure 4 At least part of the steps may include multiple sub-steps or multiple stages. These sub-steps or stages are not necessarily executed at the same time, but can be executed at different times. The execution order of these sub-steps or stages is not necessarily sequential, but can be executed in turn or alternately with other steps or at least part of the sub-steps or stages of other steps.

[0116] In one embodiment, Figure 5 As shown, a device for adjusting the charge state at the start of a range extender is provided, comprising: a preprocessing module 501, an evaluation module 502 and an adjustment module 503, wherein:

[0117] The preprocessing module 501 is used to obtain the pure electric driving mileage and the total driving mileage of the extended-range vehicle within the statistical period, and obtain the pure electric driving ratio;

[0118] Evaluation module 502, used to determine a cost evaluation value according to the fuel consumption unit price, electricity consumption unit price and pure electric driving ratio per unit distance traveled, wherein the cost evaluation value is negatively correlated with the average cost per unit distance in the statistical period;

[0119] The adjustment module 503 is used to adjust the startup state of charge of the range extender according to the cost evaluation value, including lowering the startup state of charge when the cost evaluation value is greater than the evaluation reference value and if the electricity consumption unit price is less than the oil consumption unit price.

[0120] The starting state of charge adjustment device of the above-mentioned range extender obtains the proportion of pure electric driving based on the statistics of the pure electric driving mileage and the total mileage of the range extender vehicle within the statistical period, and then calculates the cost evaluation value reflecting the average cost per unit distance based on the unit price of fuel consumption, the unit price of electricity consumption and the proportion of pure electric driving per unit distance, and adjusts the starting SOC of the vehicle range extender according to the cost evaluation value. If the cost evaluation value is large, it indicates that the user prefers to use the vehicle under low cost conditions, so the starting SOC will be lowered so that the range extender will be started under lower SOC conditions, thereby increasing the use of lower-priced electric energy, thereby reducing the cost of using the vehicle.

[0121] In one embodiment, the evaluation module 502 determines the cost evaluation value according to the following first mathematical expression:

[0122]

[0123] Among them, A is the cost evaluation value, a is the end value of the cost evaluation value, p1 is the coefficient, E is the electricity consumption cost per unit distance traveled, F is the fuel consumption cost per unit distance traveled, PCT is the pure electric driving ratio, and M is a constant.

[0124] In one embodiment, the preprocessing module 501 further obtains the average cell temperature of the vehicle cell within the statistical period, wherein the average cell temperature is the average cell temperature during the first driving of each day within the statistical period;

[0125] Determining a target 100 km / h acceleration time from a mapping relationship between temperature and acceleration time according to the average temperature of the battery cells;

[0126] The evaluation module 502 determines an acceleration evaluation value according to the target 100 km / h acceleration time, wherein the acceleration evaluation value is negatively correlated with the target 100 km / h acceleration time;

[0127] The evaluation module 502 determines a comprehensive evaluation value according to the weighting of the cost evaluation value and the acceleration evaluation value;

[0128] The adjustment module 503 adjusts the startup state of charge of the range extender according to the comprehensive evaluation value, including lowering the startup state of charge of the range extender when the comprehensive evaluation value is greater than the comprehensive evaluation reference value; and raising the startup state of charge of the range extender when the comprehensive evaluation value is less than the comprehensive evaluation reference value.

[0129] In one implementation, the evaluation module 502 determines the acceleration evaluation value according to the following second mathematical expression:

[0130]

[0131] Wherein, B is the acceleration evaluation value, b is the upper limit value of the acceleration evaluation value, p2 is the coefficient, T avg is the target 100 km / h acceleration time, T 100 is the benchmark time for acceleration from 0 to 100 km / h, and N is a constant.

[0132] In one embodiment, the preprocessing module 501 further obtains the number of times that the driving demand power is greater than the battery allowable discharge power within the statistical period, wherein the driving demand power is determined according to the wheel end demand torque, the vehicle speed, and the wheel rolling radius;

[0133] The evaluation module 502 determines a power evaluation value according to the number of times, wherein the power evaluation value is negatively correlated with the number of times;

[0134] The evaluation module 502 determines a comprehensive evaluation value according to the weighting of the power evaluation value and the cost evaluation value;

[0135] The adjustment module 503 adjusts the startup state of charge of the range extender according to the comprehensive evaluation value, including lowering the startup state of charge of the range extender when the comprehensive evaluation value is greater than the comprehensive evaluation reference value; and raising the startup state of charge of the range extender when the comprehensive evaluation value is less than the comprehensive evaluation reference value.

[0136] Alternatively, the evaluation module 502 determines the comprehensive evaluation value according to the weighting of the cost evaluation value, the acceleration evaluation value and the power evaluation value. The adjustment module 503 adjusts the startup charge state of the range extender according to the gradient according to the difference between the comprehensive evaluation value and the comprehensive evaluation reference value.

[0137] For the specific definition of the startup state of charge adjustment device of the range extender, please refer to the definition of the startup state of charge adjustment method of the range extender above, which will not be repeated here. The various modules in the above-mentioned startup state of charge adjustment device of the range extender can be implemented in whole or in part by software, hardware and a combination thereof. The above-mentioned modules can be embedded in or independent of the processor in the computer device in the form of hardware, or can be stored in the memory of the computer device in the form of software, so that the processor can call and execute the operations corresponding to the above modules.

[0138] In one embodiment, a computer device is provided. The computer device may be a terminal, and its internal structure diagram may be as follows: Figure 6As shown. The computer device includes a processor, a memory, a network interface, a display screen and an input device connected through a system bus. Among them, the processor of the computer device is used to provide computing and control capabilities. The memory of the computer device includes a non-volatile storage medium and an internal memory. The non-volatile storage medium stores an operating system and a computer program. The internal memory provides an environment for the operation of the operating system and the computer program in the non-volatile storage medium. The network interface of the computer device is used to communicate with an external terminal through a network connection. When the computer program is executed by the processor, a method for adjusting the startup charge state of a range extender is implemented. The display screen of the computer device can be a liquid crystal display screen or an electronic ink display screen, and the input device of the computer device can be a touch layer covering the display screen, or a button, trackball or touchpad set on the computer device housing, or an external keyboard, touchpad or mouse, etc.

[0139] Those skilled in the art will understand that Figure 6 The structure shown in the figure is only a block diagram of a part of the structure related to the solution of the present application, and does not constitute a limitation on the computer device to which the solution of the present application is applied. The specific computer device may include more or fewer components than those shown in the figure, or combine certain components, or have a different arrangement of components.

[0140] In one embodiment, a computer device is provided, including a memory, a processor, and a computer program stored in the memory and executable on the processor, wherein the processor implements the following steps when executing the computer program:

[0141] Obtain the pure electric mileage and total mileage of the extended-range vehicle during the statistical period, and obtain the pure electric driving ratio;

[0142] Determine a cost evaluation value based on the unit price of fuel consumption per unit distance traveled, the unit price of electricity consumption, and the proportion of pure electric driving, wherein the cost evaluation value is negatively correlated with the average cost per unit distance during the statistical period;

[0143] The starting state of charge of the range extender is adjusted according to the cost evaluation value, including lowering the starting state of charge when the cost evaluation value is greater than an evaluation reference value and the unit price of electricity consumption is less than the unit price of oil consumption.

[0144] In one embodiment, when the processor executes the computer program, the processor further implements the following steps:

[0145] The determining of the cost evaluation value comprises:

[0146] The cost evaluation value is determined according to the following first mathematical expression:

[0147]

[0148] Among them, A is the cost evaluation value, a is the end value of the cost evaluation value, p1 is the coefficient, E is the electricity consumption cost per unit distance traveled, F is the fuel consumption cost per unit distance traveled, PCT is the pure electric driving ratio, and M is a constant.

[0149] In one embodiment, when the processor executes the computer program, the processor further implements the following steps:

[0150] Obtaining the average cell temperature of the vehicle cell during the statistical period, wherein the average cell temperature is the average cell temperature during the first driving of each day during the statistical period;

[0151] Determining a target 100 km / h acceleration time from a mapping relationship between temperature and acceleration time according to the average temperature of the battery cells;

[0152] Determining an acceleration evaluation value according to the target 100 km / h acceleration time, wherein the acceleration evaluation value is negatively correlated with the target 100 km / h acceleration time;

[0153] Determining a comprehensive evaluation value according to the weighting of the cost evaluation value and the acceleration evaluation value;

[0154] The starting state of charge of the range extender is adjusted according to the comprehensive evaluation value, including lowering the starting state of charge of the range extender when the comprehensive evaluation value is greater than the comprehensive evaluation reference value; and raising the starting state of charge of the range extender when the comprehensive evaluation value is less than the comprehensive evaluation reference value.

[0155] In one embodiment, when the processor executes the computer program, the processor further implements the following steps:

[0156] Obtaining the number of times the driving demand power is greater than the battery allowable discharge power within a statistical period, wherein the driving demand power is determined according to the wheel end demand torque, vehicle speed, and wheel rolling radius;

[0157] Determining a power evaluation value according to the number of times, wherein the power evaluation value is negatively correlated with the number of times;

[0158] Determining a comprehensive evaluation value according to the weighting of the power evaluation value and the cost evaluation value;

[0159] The starting state of charge of the range extender is adjusted according to the comprehensive evaluation value, including lowering the starting state of charge of the range extender when the comprehensive evaluation value is greater than the comprehensive evaluation reference value; and raising the starting state of charge of the range extender when the comprehensive evaluation value is less than the comprehensive evaluation reference value.

[0160] In one embodiment, when the processor executes the computer program, the processor further implements the following steps:

[0161] The comprehensive evaluation value is determined according to weighting of the cost evaluation value, the acceleration evaluation value, and the power evaluation value.

[0162] In one embodiment, when the processor executes the computer program, the processor further implements the following steps:

[0163] According to the difference between the comprehensive evaluation value and the comprehensive evaluation reference value, the startup charge state of the range extender is adjusted according to a gradient.

[0164] In one embodiment, a computer readable storage medium is provided, on which a computer program is stored, and when the computer program is executed by a processor, the following steps are implemented:

[0165] Obtain the pure electric mileage and total mileage of the extended-range vehicle during the statistical period, and obtain the pure electric driving ratio;

[0166] Determine a cost evaluation value based on the unit price of fuel consumption per unit distance traveled, the unit price of electricity consumption, and the proportion of pure electric driving, wherein the cost evaluation value is negatively correlated with the average cost per unit distance during the statistical period;

[0167] The starting state of charge of the range extender is adjusted according to the cost evaluation value, including lowering the starting state of charge when the cost evaluation value is greater than an evaluation reference value and the unit price of electricity consumption is less than the unit price of oil consumption.

[0168] In one embodiment, when the computer program is executed by a processor, the following steps are also implemented:

[0169] The cost evaluation value is determined according to the following first mathematical expression:

[0170]

[0171] Among them, A is the cost evaluation value, a is the end value of the cost evaluation value, p1 is the coefficient, E is the electricity consumption cost per unit distance traveled, F is the fuel consumption cost per unit distance traveled, PCT is the pure electric driving ratio, and M is a constant.

[0172] In one embodiment, when the computer program is executed by a processor, the following steps are also implemented:

[0173] Obtaining the average cell temperature of the vehicle cell during the statistical period, wherein the average cell temperature is the average cell temperature during the first driving of each day during the statistical period;

[0174] Determining a target 100 km / h acceleration time from a mapping relationship between temperature and acceleration time according to the average temperature of the battery cells;

[0175] Determining an acceleration evaluation value according to the target 100 km / h acceleration time, wherein the acceleration evaluation value is negatively correlated with the target 100 km / h acceleration time;

[0176] Determining a comprehensive evaluation value according to the weighting of the cost evaluation value and the acceleration evaluation value;

[0177] The starting state of charge of the range extender is adjusted according to the comprehensive evaluation value, including lowering the starting state of charge of the range extender when the comprehensive evaluation value is greater than the comprehensive evaluation reference value; and raising the starting state of charge of the range extender when the comprehensive evaluation value is less than the comprehensive evaluation reference value.

[0178] In one embodiment, when the computer program is executed by a processor, the following steps are also implemented:

[0179] Obtaining the number of times the driving demand power is greater than the battery allowable discharge power within a statistical period, wherein the driving demand power is determined according to the wheel end demand torque, vehicle speed, and wheel rolling radius;

[0180] Determining a power evaluation value according to the number of times, wherein the power evaluation value is negatively correlated with the number of times;

[0181] Determining a comprehensive evaluation value according to the weighting of the power evaluation value and the cost evaluation value;

[0182] The starting state of charge of the range extender is adjusted according to the comprehensive evaluation value, including lowering the starting state of charge of the range extender when the comprehensive evaluation value is greater than the comprehensive evaluation reference value; and raising the starting state of charge of the range extender when the comprehensive evaluation value is less than the comprehensive evaluation reference value.

[0183] In one embodiment, when the computer program is executed by a processor, the following steps are also implemented:

[0184] The comprehensive evaluation value is determined according to weighting of the cost evaluation value, the acceleration evaluation value, and the power evaluation value.

[0185] Those skilled in the art can understand that all or part of the processes in the above-mentioned embodiment methods can be completed by instructing the relevant hardware through a computer program, and the computer program can be stored in a non-volatile computer-readable storage medium. When the computer program is executed, it can include the processes of the embodiments of the above-mentioned methods. Among them, any reference to memory, storage, database or other media used in the embodiments provided in this application can include non-volatile and / or volatile memory. Non-volatile memory can include read-only memory (ROM), programmable ROM (PROM), electrically programmable ROM (EPROM), electrically erasable programmable ROM (EEPROM) or flash memory. Volatile memory can include random access memory (RAM) or external cache memory. As an illustration and not limitation, RAM is available in many forms, such as static RAM (SRAM), dynamic RAM (DRAM), synchronous DRAM (SDRAM), double data rate SDRAM (DDRSDRAM), enhanced SDRAM (ESDRAM), synchronous link (Synchlink) DRAM (SLDRAM), memory bus (Rambus) direct RAM (RDRAM), direct memory bus dynamic RAM (DRDRAM), and memory bus dynamic RAM (RDRAM).

[0186] The technical features of the above embodiments may be combined arbitrarily. To make the description concise, not all possible combinations of the technical features in the above embodiments are described. However, as long as there is no contradiction in the combination of these technical features, they should be considered to be within the scope of this specification.

[0187] The above-mentioned embodiments only express several implementation methods of the present application, and the descriptions thereof are relatively specific and detailed, but they cannot be understood as limiting the scope of the invention patent. It should be pointed out that, for a person of ordinary skill in the art, several variations and improvements can be made without departing from the concept of the present application, and these all belong to the protection scope of the present application. Therefore, the protection scope of the patent of the present application shall be subject to the attached claims.

Claims

1. A method for adjusting the charge state at the start of a range extender, characterized in that: include: Obtain the pure electric mileage and total mileage of the extended-range vehicle during the statistical period, and obtain the pure electric driving ratio; Determine a cost evaluation value based on the unit price of fuel consumption per unit distance traveled, the unit price of electricity consumption, and the proportion of pure electric driving, wherein the cost evaluation value is negatively correlated with the average cost per unit distance during the statistical period; The starting state of charge of the range extender is adjusted according to the cost evaluation value, including lowering the starting state of charge when the cost evaluation value is greater than an evaluation reference value and the unit price of electricity consumption is less than the unit price of oil consumption.

2. The method for adjusting the startup state of charge of a range extender according to claim 1, characterized in that: The determining of the cost evaluation value comprises: When the electricity consumption unit price is less than the oil consumption unit price, determining the theoretical minimum cost per unit distance traveled according to the electricity consumption unit price; Determine the average cost per unit distance traveled based on the unit price of fuel consumption per unit distance traveled, the unit price of electricity consumption per unit distance traveled, and the proportion of pure electric driving; The cost evaluation value is determined according to the cost difference between the average cost and the theoretical minimum cost, and the cost evaluation value is negatively correlated with the cost difference.

3. The method for adjusting the startup state of charge of a range extender according to claim 2, characterized in that: The determining of the cost evaluation value comprises: The cost evaluation value is determined according to the following first mathematical expression: Among them, A is the cost evaluation value, a is the end value of the cost evaluation value, p1 is the coefficient, E is the electricity consumption cost per unit distance traveled, F is the fuel consumption cost per unit distance traveled, PCT is the pure electric driving ratio, and M is a constant.

4. The method for adjusting the startup state of charge of a range extender according to claim 1, characterized in that: The method for adjusting the startup state of charge of the range extender further includes: Obtaining the average cell temperature of the vehicle cell during the statistical period, wherein the average cell temperature is the average cell temperature during the first driving of each day during the statistical period; Determining a target 100 km / h acceleration time from a mapping relationship between temperature and acceleration time according to the average temperature of the battery cells; Determining an acceleration evaluation value according to the target 100 km / h acceleration time, wherein the acceleration evaluation value is negatively correlated with the target 100 km / h acceleration time; Determining a comprehensive evaluation value according to the weighting of the cost evaluation value and the acceleration evaluation value; The starting state of charge of the range extender is adjusted according to the comprehensive evaluation value, including lowering the starting state of charge of the range extender when the comprehensive evaluation value is greater than the comprehensive evaluation reference value; and raising the starting state of charge of the range extender when the comprehensive evaluation value is less than the comprehensive evaluation reference value.

5. The method for adjusting the startup state of charge of a range extender according to claim 4, characterized in that: The acceleration evaluation value is determined according to the following second mathematical expression: Wherein, B is the acceleration evaluation value, b is the upper limit value of the acceleration evaluation value, p2 is the coefficient, T avg is the target 100 km / h acceleration time, T 100 is the benchmark time for acceleration from 0 to 100 km / h, and N is a constant.

6. The method for adjusting the startup state of charge of a range extender according to any one of claims 1 to 3, characterized in that: The method for adjusting the startup state of charge of the range extender further includes: Obtaining the number of times the driving demand power is greater than the battery allowable discharge power within a statistical period, wherein the driving demand power is determined according to the wheel end demand torque, vehicle speed, and wheel rolling radius; Determining a power evaluation value according to the number of times, wherein the power evaluation value is negatively correlated with the number of times; Determining a comprehensive evaluation value according to the weighting of the power evaluation value and the cost evaluation value; The starting state of charge of the range extender is adjusted according to the comprehensive evaluation value, including lowering the starting state of charge of the range extender when the comprehensive evaluation value is greater than the comprehensive evaluation reference value; and raising the starting state of charge of the range extender when the comprehensive evaluation value is less than the comprehensive evaluation reference value.

7. The method for adjusting the startup state of charge of a range extender according to claim 4 or 5, characterized in that: The method for adjusting the startup state of charge of the range extender further includes: Obtaining the number of times the driving demand power is greater than the battery allowable discharge power within a statistical period, wherein the driving demand power is determined according to the wheel end demand torque, vehicle speed, and wheel rolling radius; Determining a power evaluation value according to the number of times, wherein the power evaluation value is negatively correlated with the number of times; Obtaining weight coefficients of the cost evaluation value, the acceleration evaluation value, and the power evaluation value; The cost evaluation value, the acceleration evaluation value and the power evaluation value are weighted according to the weight coefficient to obtain the comprehensive evaluation value; According to the difference between the comprehensive evaluation value and the comprehensive evaluation reference value, the startup charge state of the range extender is adjusted according to a gradient.

8. A starting charge state adjustment device for a range extender, characterized in that: The device comprises: A preprocessing module is used to obtain the pure electric driving mileage and total driving mileage of the extended-range vehicle during the statistical period, and obtain the pure electric driving ratio; An evaluation module, used to determine a cost evaluation value according to a unit price of fuel consumption per unit distance traveled, a unit price of electricity consumption, and a proportion of pure electric driving, wherein the cost evaluation value is negatively correlated with an average cost per unit distance during a statistical period; The adjustment module is used to adjust the startup charge state of the range extender according to the cost evaluation value, including lowering the startup charge state when the cost evaluation value is greater than the evaluation reference value and if the electricity consumption unit price is less than the oil consumption unit price.

9. A computer device comprising a memory, a processor and a computer program stored in the memory and executable on the processor, characterized in that: When the processor executes the computer program, the steps of the method according to any one of claims 1 to 7 are implemented.

10. A computer-readable storage medium having a computer program stored thereon, characterized in that: When the computer program is executed by a processor, the steps of the method according to any one of claims 1 to 7 are implemented.

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