Electric automobile torque response control method and electronic equipment

Abstract

The invention discloses an electric vehicle torque response control method and electronic equipment. The electric automobile torque response control method comprises the steps that accelerator pedal information is obtained; when the treading speed of the accelerator pedal is larger than the speed threshold value, the treading depth of the accelerator pedal is larger than the depth threshold value, and the vehicle state information meets the overtaking entering condition, it is judged that the vehicle enters the overtaking process, and compensation torque is calculated according to the current vehicle speed; the total torque is calculated to be the sum of the request torque and the compensation torque, and the total torque is output to a motor controller. Whether the vehicle enters the overtaking process or not is judged through the accelerator pedal, and when the vehicle enters the overtaking process, the compensation torque is overlaid on the original request torque, so that the requirement of a driver for power is met.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of vehicles, and particularly relates to an electric vehicle torque response control method, an electronic device, a storage medium and a computer program product. BACKGROUND

[0002] In the development process of current electric vehicles (new energy vehicles), many driving modes are defined, and generally, the main feeling of distinction is the size of power under the same accelerator pedal opening.

[0003] However, for the driving mode with small power, stepping on the accelerator pedal opening of 100% may still not meet the acceleration demand in daily life. SUMMARY

[0004] Therefore, it is necessary to provide an electric vehicle torque response control method, an electronic device, a storage medium and a computer program product to solve the technical problem that the existing technology cannot meet the acceleration demand for the driving mode with small power.

[0005] The present application provides an electric vehicle torque response control method, comprising: obtaining accelerator pedal information; when the stepping rate of the accelerator pedal is greater than the rate threshold value, the stepping depth of the accelerator pedal is greater than the depth threshold value, and the vehicle state information meets the entering overtaking condition, judging that the vehicle enters the overtaking process, and calculating a compensation torque according to the current vehicle speed; calculating a total torque as the request torque plus the compensation torque, and outputting the total torque to a motor controller.

[0006] Further, the method further comprises: obtaining historical stepping rates and historical stepping depths of a plurality of historical overtaking processes, the historical stepping rate being the maximum stepping rate in the historical overtaking process, the historical stepping depth being the maximum stepping depth in the historical overtaking process, and the historical overtaking process being a process in which the stepping depth of the accelerator pedal remains greater than the depth threshold value and the vehicle state information remains to meet the entering overtaking condition in the vehicle history; calculating the rate threshold value according to the plurality of historical stepping rates, and calculating the depth threshold value according to the plurality of historical stepping depths.

[0007] Further, the calculating the compensation torque according to the current vehicle speed comprises: obtaining a vehicle speed interval in which the current vehicle speed is located as a current vehicle speed interval; obtaining a lower limit torque reference value corresponding to the lower limit of the current vehicle speed interval, and obtaining an upper limit torque reference value corresponding to the upper limit of the current vehicle speed interval; A first difference between the current vehicle speed and the lower limit of the interval is calculated as a lower limit proportion in the current vehicle speed interval, and a second difference between the upper limit of the interval and the current vehicle speed is calculated as an upper limit proportion in the current vehicle speed interval; A lower limit weight is calculated according to the lower limit proportion, an upper limit weight is calculated according to the upper limit proportion, and a compensation torque is calculated as a weighted value of the lower limit torque reference value and the upper limit torque reference value according to the lower limit weight, the upper limit weight, the lower limit torque reference value and the upper limit torque reference value.

[0008] Further, the method further comprises: A process in which the depression depth of the accelerator pedal is kept greater than a depth threshold value and the vehicle state information satisfies an entering overtaking condition is taken as an overtaking process, a maximum torque in the overtaking process is obtained, and the upper limit torque reference value and the lower limit torque reference value of the vehicle speed interval in which the vehicle speed at the overtaking time is located are updated according to the maximum torque.

[0009] Further, the updating of the upper limit torque reference value and the lower limit torque reference value of the vehicle speed interval in which the vehicle speed at the overtaking time is located according to the maximum torque comprises: The maximum torque is subtracted by a demand torque of the drive motor when the vehicle enters the overtaking process to obtain a maximum increase torque; The maximum increase torque is divided by the compensation torque to obtain an increase proportion; The upper limit torque reference value of the vehicle speed interval in which the vehicle speed at the overtaking time is located is multiplied by the increase proportion to obtain an updated upper limit torque reference value, and the lower limit torque reference value of the vehicle speed interval in which the vehicle speed at the overtaking time is located is multiplied by the increase proportion to obtain an updated lower limit torque reference value.

[0010] Further, the entering overtaking condition comprises that a steering light is started and a steering wheel angle is greater than an angle threshold value.

[0011] Further, the entering overtaking condition further comprises that a road surface dryness is greater than a preset dryness threshold value, and a visibility level is greater than a preset visibility level threshold value.

[0012] The application provides an electronic device, comprising: at least one processor; and a memory connected in communication with the at least one processor; wherein the memory stores instructions executable by the at least one processor, and the instructions are executed by the at least one processor to enable the at least one processor to perform the electric vehicle torque response control method as described above.

[0013] The application provides a storage medium storing computer instructions for executing all steps of the electric vehicle torque response control method as described above when the computer executes the computer instructions.

[0014] The application provides a computer program product comprising computer programs / instructions for implementing the electric vehicle torque response control method as described above when executed by a processor.

[0015] The application judges whether the vehicle enters the overtaking process through the accelerator pedal, and superimposes the compensation torque on the original requested torque when the vehicle enters the overtaking process, so as to guarantee the demand of the driver for power. BRIEF DESCRIPTION OF DRAWINGS

[0016] Figure 1 A working flow chart of an electric vehicle torque response control method according to an embodiment of the application; Figure 2 A working flow chart of an electric vehicle torque response control method according to another embodiment of the application; Figure 3 A hardware structure schematic diagram of an electronic device according to the application. DETAILED DESCRIPTION

[0017] The specific embodiments of the application will be further described below in conjunction with the accompanying drawings. Identical parts are denoted by identical reference numerals in the drawings. It should be noted that the words “front”, “back”, “left”, “right”, “up” and “down” used in the following description refer to the directions in the drawings, and the words “inner” and “outer” refer to the directions towards or away from the geometric center of a specific part.

[0018] As Figure 1 A working flow chart of an electric vehicle torque response control method according to an embodiment of the application is shown, comprising: Step S101, obtaining accelerator pedal information; Step S102, when the pedaling rate of the accelerator pedal is greater than the rate threshold, the pedaling depth of the accelerator pedal is greater than the depth threshold, and the vehicle state information meets the entering overtaking condition, judging that the vehicle enters the overtaking process, and calculating the compensation torque according to the current vehicle speed; Step S103, calculating the total torque as the requested torque plus the compensation torque, and outputting the total torque to the motor controller.

[0019] Specifically, the application can be applied to electronic devices with processing capabilities, such as controllers of vehicles. For example, electronic control unit (ECU) of vehicles.

[0020] First, step S101 is executed to obtain the accelerator pedal information.

[0021] Specifically, when the vehicle is driving, the opening value of the accelerator pedal is calculated and updated every period of time, so as to obtain the accelerator pedal information of the accelerator pedal.

[0022] The accelerator pedal information includes, but is not limited to, the stepping rate and the stepping depth.

[0023] Then, step S102 is performed, when the stepping rate of the accelerator pedal is greater than the rate threshold value, the stepping depth of the accelerator pedal is greater than the depth threshold value, and the vehicle state information meets the entering overtaking condition, it is judged that the vehicle enters the overtaking process, and the compensation torque is calculated according to the current vehicle speed.

[0024] Specifically, the acceleration intention of the driver can be obtained according to the stepping rate. When the vehicle is in a normal driving state, when the stepping rate of the accelerator pedal is greater than the rate threshold value, it can be considered that the driver has a relatively strong intention to accelerate the vehicle, and the stepping depth of the accelerator pedal further reflects the acceleration intention of the driver, and at the same time, in combination with the vehicle state information, when the vehicle state information meets the entering overtaking condition, it is judged that the vehicle enters the overtaking process, so as to start the torque boost response control, and the compensation torque is calculated according to the current vehicle speed.

[0025] The vehicle state information includes: the steering information of the vehicle, the road condition information where the vehicle is located, and / or the environmental information where the vehicle is located.

[0026] Finally, step S103 is performed, the total torque is calculated as the request torque plus the compensation torque, and the total torque is output to the motor controller.

[0027] The request torque is a torque determined according to the opening of the accelerator pedal, for example, a torque calculated by the VCU according to the accelerator pedal. Then, on the basis of the request torque, the compensation torque is added to obtain the total torque, and the total torque is output to the motor controller, and the motor controller controls the output torque of the driving motor based on the total torque.

[0028] The application judges whether the vehicle enters the overtaking process through the accelerator pedal, and adds the compensation torque to the original request torque when the vehicle enters the overtaking process, so as to ensure the demand of the driver for power.

[0029] As Figure 2 The working flowchart of the torque response control method of the electric vehicle in another embodiment of the application is shown in the figure, which includes: In step S201, a plurality of historical pedal rates and historical pedal depths of a plurality of historical overtaking processes are obtained, the historical pedal rate is a maximum pedal rate in a historical overtaking process, the historical pedal depth is a maximum pedal depth in the historical overtaking process, and the historical overtaking process is a process in which the pedal depth of the accelerator pedal is kept greater than a depth threshold value and the vehicle state information is kept satisfying an entering overtaking condition in the history of the vehicle. A rate threshold value is calculated according to the plurality of historical pedal rates, and a depth threshold value is calculated according to the plurality of historical pedal depths.

[0030] In step S202, the accelerator pedal information is obtained.

[0031] In step S203, when the pedal rate of the accelerator pedal is greater than the rate threshold value, the pedal depth of the accelerator pedal is greater than the depth threshold value, and the vehicle state information satisfies the entering overtaking condition, it is judged that the vehicle enters the overtaking process, and the entering overtaking condition includes that the steering light is turned on and the steering wheel angle is greater than an angle threshold value.

[0032] In step S204, a vehicle speed interval in which the current vehicle speed is located is obtained as a current vehicle speed interval. A lower limit torque reference value corresponding to a lower limit of the current vehicle speed interval is obtained, and an upper limit torque reference value corresponding to an upper limit of the current vehicle speed interval is obtained. A first difference between the current vehicle speed and the lower limit of the interval in the current vehicle speed interval is calculated as a lower limit proportion, and a second difference between the upper limit of the interval and the current vehicle speed in the current vehicle speed interval is calculated as an upper limit proportion. A lower limit weight is calculated according to the lower limit proportion, an upper limit weight is calculated according to the upper limit proportion, and a compensation torque is calculated as a weighted value of the lower limit torque reference value and the upper limit torque reference value according to the lower limit weight, the upper limit weight, the lower limit torque reference value, and the upper limit torque reference value.

[0033] In step S205, a total torque is calculated as a request torque plus the compensation torque, and the total torque is output to the motor controller.

[0034] In step S206, when the vehicle state information satisfies the exiting overtaking process, the compensation torque is controlled to decrease to 0 at a preset slope.

[0035] Specifically, first, step S201 is performed to obtain a plurality of historical pedal rates and historical pedal depths of a plurality of historical overtaking processes, the historical pedal rate is a maximum pedal rate in a historical overtaking process, the historical pedal depth is a maximum pedal depth in the historical overtaking process, and the historical overtaking process is a process in which the pedal depth of the accelerator pedal is kept greater than a depth threshold value and the vehicle state information is kept satisfying an entering overtaking condition in the history of the vehicle.

[0036] Specifically, the driving habits of the driver are obtained according to the long-term record of the information of the vehicle. The habits of the driver when overtaking are obtained according to the long-term operation of the accelerator pedal and the operation of the steering wheel when corresponding to the accelerator pedal, and the corresponding function opening condition is changed according to the operation style of the driver. If the driver uses the vehicle for the first time, the opening condition can be designed according to the results of market research to meet the operation habits of more drivers. For example, according to the data monitoring after the driver uses the vehicle, it is found that the acceleration pedal depth of the driver when overtaking is greater than the set value, it is considered that the driver needs more power, and the set value of the control is adjusted to be smaller, so that the function is triggered earlier, the driver has a stronger power experience, the acceleration pedal depression depth of the driver is reduced, the operation of the driver is simplified, and the driving experience of the driver is improved.

[0037] Specifically, when the overtaking condition is that the steering light is started and the steering wheel angle is greater than the angle threshold value, it can be judged that the vehicle state information remains to meet the process of entering the overtaking condition. If the depression depth of the accelerator pedal remains greater than the depth threshold value during the process, it is recorded as a historical overtaking process, and the maximum depression rate in each historical overtaking process is recorded as a historical depression rate, and the maximum depression depth in each historical overtaking process is recorded as a historical depression depth. The maximum depression rate and the maximum depression depth refer to the maximum value of the vehicle in each overtaking process.

[0038] Then, the rate threshold value is calculated according to a plurality of the historical depression rates, and the depth threshold value is calculated according to a plurality of the historical depression depths.

[0039] Specifically, the average value of a plurality of historical depression rates is calculated as the rate threshold value, and the average value of a plurality of historical depression depths is calculated as the depth threshold value.

[0040] For example, when the historical depression rate or the historical depression depth is collected for 100 times, the average value is taken. The rate threshold value and the depth threshold value are used as the basis for judging the scene, that is, the driver generally depresses so fast and so deep, which indicates that the driver needs to overtake.

[0041] Then, step S202 is performed to obtain the accelerator pedal information.

[0042] Specifically, when the vehicle is driving, the opening value of the accelerator pedal is calculated and updated every period of time, so as to obtain the accelerator pedal information of the accelerator pedal.

[0043] The accelerator pedal information includes but is not limited to the depression rate and the depression depth.

[0044] Then, when the acceleration pedal pressing rate is greater than the rate threshold, the acceleration pedal pressing depth is greater than the depth threshold, and the vehicle state information satisfies the entering overtaking condition, step S203 is performed to determine that the vehicle enters the overtaking process, and the entering overtaking condition includes that the steering lamp is turned on and the steering wheel angle is greater than the angle threshold.

[0045] Specifically, the entering overtaking condition includes that the steering lamp is turned on and the steering wheel angle is greater than the angle threshold.

[0046] That is, at a certain vehicle speed, when the driver uses the steering lamp and turns the steering wheel, it is determined that the entering overtaking condition is met, and if the driver simultaneously presses the accelerator pedal deeply and quickly, it is determined that the vehicle enters the overtaking process, and needs to perform lane changing and merging operations.

[0047] In one embodiment, the entering overtaking condition further includes that the road dryness is greater than a preset dryness threshold, and the visibility level is greater than a preset visibility level threshold.

[0048] Specifically, in addition to the steering lamp, the current weather can also be obtained according to a weather forecasting system, and the weather and road conditions can be comprehensively determined according to a rain sensor. When it is determined that the weather will cause the road to be dry and the visibility level is high, the system will allow the function to be started, and the subsequent steps S204 to S206 are performed.

[0049] The dryness can be determined by the weather forecasting system or the rain sensor using an existing road dryness determination method. For example, the dryness can be calculated by the rain sensor. The visibility level can be obtained by the weather forecasting system to obtain the visibility level of the current section.

[0050] In some embodiments, it further includes ensuring that the vehicle is in the forward gear. If the vehicle is in the P / N / R gear, or the driver steps on the brake pedal, the function is ensured to be disabled, and the electric vehicle torque response control method of the present application is not performed, that is, steps S201 to S206 are not performed.

[0051] In some embodiments, it further includes obtaining the current driving mode of the vehicle, and only in the specified mode can the function be triggered, and the electric vehicle torque response control method of the present application is performed, thereby ensuring that different driving modes have a response distinction.

[0052] The embodiment adds the judgment of road dryness and visibility to avoid increasing torque in wet and slippery road sections or low visibility conditions to ensure driving safety.

[0053] Then, step S204 is performed to obtain the vehicle speed interval in which the current vehicle speed is located as the current vehicle speed interval. obtaining a lower limit torque reference value corresponding to a lower limit of the current vehicle speed interval, and obtaining an upper limit torque reference value corresponding to an upper limit of the current vehicle speed interval; calculating a proportion of a first difference between the current vehicle speed and the lower limit of the interval in the current vehicle speed interval as a lower limit proportion, and calculating a proportion of a second difference between the upper limit of the interval and the current vehicle speed in the current vehicle speed interval as an upper limit proportion; calculating a lower limit weight according to the lower limit proportion, calculating an upper limit weight according to the upper limit proportion, and calculating a compensation torque as a weighted value of the lower limit torque reference value and the upper limit torque reference value according to the lower limit weight, the upper limit weight, the lower limit torque reference value, and the upper limit torque reference value.

[0054] Specifically, since there is no specific boundary between high speed and low speed, fuzzy control is suitable.

[0055] Specifically, the compensation torque is calculated according to the proportion of the current vehicle speed in the low-high vehicle speed and according to the weighted corresponding lookup table value. For example, 40 vehicle speed belongs to both medium vehicle speed and low vehicle speed, but it is more inclined to low vehicle speed, so the proportion of the torque compensated by low vehicle speed in the compensation torque of 40 vehicle speed is larger. The current vehicle speed is calculated by using this method. The fuzzy rule is determined by using a big data model. The vehicle speed is systematically divided into multiple vehicle speed intervals, for example, five vehicle speed intervals, including: extremely low vehicle speed interval, low vehicle speed interval, medium vehicle speed interval, high vehicle speed interval, and extremely high vehicle speed interval. According to the analysis of the torque usage during overtaking in multiple vehicle speed intervals, the lower limit torque reference value corresponding to the lower limit of each vehicle speed interval and the upper limit torque reference value corresponding to the upper limit of each vehicle speed interval are calibrated. For example, the lower limit torque reference value corresponding to the low vehicle speed interval is 100 Nm, and the upper limit torque reference value is 150 Nm. It is judged that 40 vehicle speed is located in the low vehicle speed interval, so the compensation torque of 40 vehicle speed during overtaking can be (1-w1) x 100 + (1-w2) x 150 Nm, wherein w1 is the lower limit proportion, and w2 is the upper limit proportion. The proportion of the first difference between 40 vehicle speed and the lower limit of the low vehicle speed interval in the entire low vehicle speed interval is calculated as the lower limit proportion, and the proportion of the second difference between the upper limit of the low vehicle speed interval and 40 vehicle speed in the low vehicle speed interval is calculated as the upper limit proportion.

[0056] In some embodiments, the compensation torque is calculated as a weighted value of the lower limit torque reference value and the upper limit torque reference value according to the lower limit weight, the upper limit weight, the lower limit torque reference value, and the upper limit torque reference value, including: The compensation torque is calculated as (1-w1)×N1+(1-w2)×N2, wherein w1 is a lower limit proportion, 1-w1 is a lower limit weight, N1 is a lower limit torque reference value, w2 is an upper limit proportion, 1-w2 is an upper limit weight, and N2 is an upper limit torque reference value.

[0057] In some embodiments, the method further comprises: The maximum torque is calculated as (1+X)×requested torque, wherein X is a rate improvement parameter, and X is determined according to vehicle speed and accelerator pedal opening (throttle opening), The total torque is calculated as Min(requested torque+compensation torque, maximum torque).

[0058] Specifically, according to the state of different vehicle speeds, different torque improvement rates can be obtained, which are linearly changed, i.e., the minimum and maximum values of torque improvement are determined first, and then the change rate is determined according to the opening of the pedal. The minimum and maximum values are set by the acceleration change rate that can be perceived by the human body, so as to ensure that the acceleration impact on the customer is small during acceleration, and the discomfort brought to the customer during acceleration is relieved.

[0059] If the total torque is only affected by the external characteristics of the motor, the torque may be continuously added up at small throttle, which may result in poor controllability of the throttle. Therefore, in view of this phenomenon, the throttle opening of the customer can be limited, X can be obtained by looking up a table according to the accelerator pedal opening and the vehicle speed, so as to determine the upper limit value of the total torque.

[0060] That is, the sum of the compensation torque and the requested torque does not exceed (1+X)×requested torque. X is pre-calibrated and confirmed by a three-dimensional table of vehicle speed and accelerator pedal opening. (1+X)×requested torque can be calculated as the maximum torque. The final output total torque is the minimum value of the sum of the compensation torque and the requested torque and the maximum torque.

[0061] In one of the embodiments, the method further comprises: The process in which the depth of the accelerator pedal is kept greater than a depth threshold value and the vehicle state information meets the entering overtaking condition is taken as an overtaking process, the maximum torque in the overtaking process is obtained, and the upper limit torque reference value and the lower limit torque reference value of the vehicle speed interval in which the vehicle speed at the overtaking time is located are updated according to the maximum torque.

[0062] Specifically, the data of the driver using the vehicle is monitored, and the upper limit torque reference value and the lower limit torque reference value of the corresponding vehicle speed interval are updated based on the maximum torque of the driver in the overtaking process.

[0063] Wherein, the compensation torque = w1 x N1 + w2 x N2, the maximum torque in the overtaking process of the driver is replaced by the compensation torque, w1 and w2 are kept unchanged, so as to calculate the new N1 as the new lower limit torque reference value of the speed interval, and calculate the new N2 as the new upper limit torque reference value of the speed interval.

[0064] The embodiment updates the upper limit torque reference value and the lower limit torque reference value of the corresponding speed interval according to the driving habit of the driver to meet the habit of the driver.

[0065] In one of the embodiments, the updating of the upper limit torque reference value and the lower limit torque reference value of the speed interval where the vehicle speed at the overtaking time is located according to the maximum torque comprises: The maximum increase torque is obtained by subtracting the demand torque of the driving motor at the time when the vehicle enters the overtaking process from the maximum torque. The increase ratio is obtained by dividing the maximum increase torque by the compensation torque. The updated upper limit torque reference value is obtained by multiplying the upper limit torque reference value of the speed interval where the vehicle speed at the overtaking time is located by the increase ratio, and the updated lower limit torque reference value is obtained by multiplying the lower limit torque reference value of the speed interval where the vehicle speed at the overtaking time is located by the increase ratio.

[0066] Specifically, the maximum increase torque, which is the torque increased by the driver according to the actual demand, is obtained by subtracting the demand torque of the driving motor at the time when the vehicle enters the overtaking process from the maximum torque.

[0067] Then, the increase ratio is calculated as K = Nmax / Na, where Nmax is the maximum increase torque and Na is the compensation torque.

[0068] Then, the updated upper limit torque reference value is obtained by multiplying the upper limit torque reference value of the speed interval where the vehicle speed at the overtaking time is located by the increase ratio, and the updated lower limit torque reference value is obtained by multiplying the lower limit torque reference value of the speed interval where the vehicle speed at the overtaking time is located by the increase ratio.

[0069] Finally, step S205 is performed to calculate the total torque as the request torque plus the compensation torque, and output the total torque to the motor controller.

[0070] Then, when the vehicle state information meets the exit condition of the overtaking process, step S206 is performed to control the compensation torque to decrease to 0 at a preset slope.

[0071] Specifically, when the driver triggers a function related to intelligent driving, or switches the driving mode, the vehicle state information meets the exit of the overtaking process, at this time the additional compensation torque needs to be exited according to a certain slope, so as to ensure that the response of the torque can be restored to the normal level. Through calibration, a suitable slope is selected to ensure that there is no impact on driving, and at the same time, the normal state can be restored at a faster speed.

[0072] The embodiment can provide additional compensation torque for the weak driving mode in the overtaking process, help the driver to complete the overtaking and lane changing operation, and improve the driving experience of the customer. At the same time, the limitation of torque change and rise is designed, which can ensure the performance and distinguish from other driving modes. In addition, the driving habits of the driver are learned, so that the increase of the compensation torque can meet the driving habits of the driver. Finally, the existing technology generally realizes torque compensation by jumping to the maximum external characteristic curve, but the existing technical solution will cause mutual restriction in the calibration process of different MAPs, and will also cause driving problems due to the mismatch of the exit throttle corresponding torque after jumping. Unlike the way of directly jumping to the maximum external characteristic curve in the prior art, the embodiment sets the vehicle speed interval and the upper and lower limit torque reference value to calculate the compensation torque, so that the calculation of the compensation torque can cover the full vehicle speed, and the overtaking failure caused by too small torque compensation at high speed section, and the driving performance deterioration caused by too large torque compensation at low speed.

[0073] It should be understood that the size of the serial number of each step in the above embodiment does not mean the order of execution, and the execution order of each process should be determined according to its function and inherent logic, and should not constitute any limitation on the implementation process of the embodiment of the present application.

[0074] As Figure 3 The hardware structure of the electronic equipment is shown in the figure, which comprises: at least one processor 301; and a memory 302 in communication connection with the at least one processor 301; wherein The memory 302 stores instructions executable by the at least one processor, and the instructions are executed by the at least one processor to enable the at least one processor to execute the electric vehicle torque response control method as described above.

[0075] Figure 3 The processor 301 is taken as an example in the embodiment.

[0076] The electronic equipment can further comprise an input device 303 and a display device 304.

[0077] The processor 301, memory 302, input device 303 and display device 304 can be connected by a bus or other means. The figure shows an example of connection by bus.

[0078] The memory 302, as a non-volatile computer-readable storage medium, can be used to store non-volatile software programs, non-volatile computer-executable programs, and modules, such as the program instructions / modules corresponding to the electric vehicle torque response control method in the embodiments of this application. Figure 1 , Figure 2 The method flow is shown. The processor 301 executes various functional applications and data processing by running non-volatile software programs, instructions, and modules stored in the memory 302, thereby realizing the electric vehicle torque response control method in the above embodiments.

[0079] Memory 302 may include a program storage area and a data storage area. The program storage area may store the operating system and applications required for at least one function; the data storage area may store data created based on the use of the electric vehicle torque response control method, etc. Furthermore, memory 302 may include high-speed random access memory and may also include non-volatile memory, such as at least one disk storage device, flash memory device, or other non-volatile solid-state storage device. In some embodiments, memory 302 may optionally include memory remotely located relative to processor 301, and these remote memories may be connected via a network to the apparatus performing the electric vehicle torque response control method. Examples of such networks include, but are not limited to, the Internet, corporate intranets, local area networks, mobile communication networks, and combinations thereof.

[0080] The input device 303 can receive user clicks and generate signal inputs related to user settings and function control of the electric vehicle torque response control method. The display device 304 may include a display screen or other display equipment.

[0081] The one or more modules are stored in the memory 302, and when run by the one or more processors 301, the electric vehicle torque response control method in any of the above method embodiments is executed.

[0082] This invention determines whether the vehicle is entering an overtaking process by using the accelerator pedal, and when the vehicle enters the overtaking process, it adds a compensation torque on top of the original requested torque to ensure the driver's power needs are met.

[0083] One embodiment of the present invention provides a storage medium that stores computer instructions, which, when executed by a computer, are used to perform all the steps of the electric vehicle torque response control method described above.

[0084] In the context of the present disclosure, the storage medium can be a tangible media which can contain or store the program for use by or in connection with the instruction execution system, apparatus, or device. The storage medium can be a machine-readable signal medium or a machine-readable storage medium. Alternatively, the storage medium can be a non-transitory computer-readable storage medium, for example, the non-transitory computer-readable storage medium can be a ROM, a random access memory (RAM), a compact disc read-only memory (CD-ROM), a magnetic tape, a floppy disk, and an optical data storage device, etc.

[0085] An embodiment of the present application provides a computer program product comprising computer programs / instructions which, when executed by a processor, implement the electric vehicle torque response control method as described above.

[0086] The above-described embodiments only express several implementation manners of the present application, and the description is relatively specific and detailed, but it should not be understood as a limitation on the patent scope of the present application. It should be noted that, for those skilled in the art, without departing from the concept of the present application, a number of modifications and improvements can be made, which all belong to the protection scope of the present application. Therefore, the protection scope of the present application should be subject to the appended claims.

Claims

1. A torque response control method for electric vehicles, characterized in that, include: Get accelerator pedal information; When the accelerator pedal depress rate is greater than the rate threshold, the accelerator pedal depress depth is greater than the depth threshold, and the vehicle status information meets the conditions for entering overtaking, the vehicle is determined to enter the overtaking process, and the compensation torque is calculated based on the current vehicle speed. The total torque is calculated as the requested torque plus the compensated torque, and the total torque is output to the motor controller.

2. The electric vehicle torque response control method according to claim 1, characterized in that, Also includes: The historical accelerator pedal speed and historical accelerator pedal depth are obtained for multiple historical overtaking processes. The historical accelerator pedal speed is the maximum accelerator pedal speed in the historical overtaking process, and the historical accelerator pedal depth is the maximum accelerator pedal depth in the historical overtaking process. The historical overtaking process is the process in which the accelerator pedal depth is kept greater than the depth threshold in the history of the vehicle, and the vehicle status information is kept to meet the conditions for entering overtaking. A rate threshold is calculated based on multiple historical trampling rates, and a depth threshold is calculated based on multiple historical trampling depths.

3. The electric vehicle torque response control method according to claim 1, characterized in that, The calculation of the compensation torque based on the current vehicle speed includes: Get the current vehicle speed range as the current vehicle speed range; Obtain the lower limit torque reference value corresponding to the lower limit of the current vehicle speed range, and obtain the upper limit torque reference value corresponding to the upper limit of the current vehicle speed range; The proportion of the first difference between the current vehicle speed and the lower limit of the interval in the current vehicle speed interval is calculated as the lower limit proportion, and the proportion of the second difference between the upper limit of the interval and the current vehicle speed in the current vehicle speed interval is calculated as the upper limit proportion. The lower limit weight is calculated based on the lower limit ratio, the upper limit weight is calculated based on the upper limit ratio, and the compensation torque is calculated as the weighted value of the lower limit torque benchmark value and the upper limit torque benchmark value based on the lower limit weight, the upper limit weight, the lower limit torque benchmark value, and the upper limit torque benchmark value.

4. The electric vehicle torque response control method according to claim 3, characterized in that, Also includes: The overtaking process is defined as the process in which the accelerator pedal is pressed to a depth greater than a depth threshold and the vehicle status information meets the conditions for entering overtaking. The maximum torque during the overtaking process is obtained, and the upper limit torque reference value and the lower limit torque reference value of the vehicle speed range at the time of overtaking are updated based on the maximum torque.

5. The electric vehicle torque response control method according to claim 4, characterized in that, The step of updating the upper limit torque reference value and the lower limit torque reference value of the vehicle speed range at the time of overtaking based on the maximum torque includes: The maximum increase torque is obtained by subtracting the torque required by the drive motor at the moment the vehicle enters the overtaking process from the maximum torque. Divide the maximum increase torque by the compensation torque to obtain the increase ratio; The updated upper limit torque reference value is obtained by multiplying the upper limit torque reference value of the speed range in which the vehicle speed is located at the time of overtaking by the increase ratio, and the updated lower limit torque reference value is obtained by multiplying the lower limit torque reference value of the speed range in which the vehicle speed is located at the time of overtaking by the increase ratio.

6. The electric vehicle torque response control method according to claim 1, characterized in that, The conditions for entering overtaking include: activating the turn signal and turning the steering wheel angle greater than the angle threshold.

7. The electric vehicle torque response control method according to claim 6, characterized in that, The conditions for entering overtaking also include: the road surface dryness is greater than a preset dryness threshold, and the visibility level is greater than a preset visibility level threshold.

8. The electric vehicle torque response control method according to claim 1, characterized in that, Also includes: When the vehicle status information meets the requirements for exiting the overtaking process, the compensation torque is controlled to decrease to 0 with a preset slope.

9. An electronic device, characterized in that, include: At least one processor; as well as, A memory communicatively connected to at least one of the processors; wherein, The memory stores instructions that can be executed by at least one of the processors to enable at least one of the processors to perform the electric vehicle torque response control method as described in any one of claims 1 to 8.

10. A storage medium, characterized in that, The storage medium stores computer instructions, which, when executed by the computer, are used to perform all the steps of the electric vehicle torque response control method as described in any one of claims 1 to 8.

11. A computer program product, comprising a computer program / instructions, characterized in that, When the computer program / instruction is executed by the processor, it implements the electric vehicle torque response control method as described in any one of claims 1 to 8.

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