Electric vehicle control method and system based on personalized driving mode

Abstract

The application discloses a control method and system for electric vehicles based on personalized driving modes, and belongs to the technical field of electric vehicle control. The method comprises the following steps: a large-screen controller acquires a driving mode and sends the driving mode to a vehicle controller, a steering controller and an air conditioner controller; the vehicle controller acquires a depth of a throttle pedal and a vehicle speed, acquires a real power torque requested by a driver according to a power mode level and the depth of the throttle pedal, acquires a real power generation torque requested by the driver according to the vehicle speed and an energy recovery intensity level, and sends the real power torque requested by the driver and the real power generation torque requested by the driver to a motor controller; the steering controller controls an assist level of a servo steering motor according to the power mode level; and the air conditioner controller acquires battery capacity information, controls a working mode of an air conditioner in combination with the power mode level and the energy recovery intensity level. The method can improve the driving experience of users based on personalized selection of the users, and solves the problems of fixed driving modes and low selectivity of users.

Description

Technical Field

[0001] This invention relates to the field of technology, and in particular to an electric vehicle control method and system based on personalized driving modes. Background Technology

[0002] The statements in this section merely refer to the background art related to this invention and do not necessarily constitute prior art.

[0003] As the penetration rate of electric vehicles increases, the number of electric vehicle users is also growing. At the same time, users' needs for electric vehicles are becoming more personalized and diverse. Driving is a high-frequency scenario for cars, so users pay special attention to the driving performance of vehicles.

[0004] Currently, there are various driving modes for electric vehicles on the market, such as Sport mode, Standard mode, and Comfort mode. The power response when the user presses the accelerator varies significantly in different driving modes. However, the power modes provided by the vehicles are only a few fixed ones, or only the energy recovery level can be continuously adjusted. Users have limited choices and cannot adjust the power response and energy recovery intensity at the same time, which cannot meet the personalized driving needs of drivers and reduces the actual driving experience of users.

[0005] Furthermore, under the same energy recovery level, the torque boundary is fixed. The vehicle offers several energy recovery level options, such as high, medium, and low, and the torque boundary of each level is also fixed, only the torque magnitude differs between the levels. As for driving modes, the vehicle generally only offers a few driving modes, and the maximum torque is also differentiated, which limits the selection and makes it unable to cope with complex and diverse traffic driving situations, posing a safety risk. Summary of the Invention

[0006] To address the shortcomings of existing technologies, this invention provides an electric vehicle control method and system based on personalized driving modes. It designs a driving mode customization system with stepless adjustment of power response and stepless adjustment of energy recovery intensity (stepless speed regulation), solving the problem that users cannot personalize the driving mode selection for electric vehicles.

[0007] In a first aspect, the present invention provides an electric vehicle control method based on personalized driving modes;

[0008] An electric vehicle control method based on personalized driving modes includes:

[0009] The large screen controller obtains the driving mode set by the driver and sends it to the vehicle controller, steering controller and air conditioning controller. The driving mode includes the power mode level and the energy recovery intensity level.

[0010] The vehicle controller obtains the accelerator pedal depth and vehicle speed in real time, and obtains the driver's actual requested power torque based on the power mode level and accelerator pedal depth; it also obtains the driver's actual requested power generation torque based on the vehicle speed and energy recovery intensity level; and sends the driver's actual requested power torque and driver's actual requested power generation torque to the motor controller to control the motor to execute.

[0011] The steering controller controls the assist level of the servo steering motor according to the power mode level;

[0012] The air conditioning controller obtains battery capacity information and, in conjunction with the power mode level and energy recovery intensity level, controls the air conditioning's operating mode.

[0013] Furthermore, obtaining the driver's actual requested power torque based on the power mode level and accelerator pedal depth includes:

[0014] Calculate the percentage of torque requested based on the accelerator pedal depth and vehicle speed;

[0015] The maximum power torque that the driver can request is determined in real time based on the power mode level.

[0016] Based on the percentage of torque requested and the maximum power torque that the driver can request, obtain the driver's actual requested power torque.

[0017] Preferably, the maximum driver-requested torque corresponding to the power mode level in real time is determined based on the current maximum driver-requested torque and the corresponding torque limit coefficient;

[0018] The torque limit coefficient is proportional to the power mode level.

[0019] Further preferably, the vehicle controller obtains the maximum executable power torque of the motor, the current speed of the motor, and the maximum allowable discharge power of the battery in real time, and obtains the current maximum power torque that the driver can request based on the maximum executable power torque of the motor, the current speed of the motor, and the maximum allowable discharge power of the battery;

[0020] The maximum executable torque and current speed of the motor are sent by the motor controller, while the maximum allowable discharge power of the battery is sent by the battery management system.

[0021] Furthermore, obtaining the driver's actual requested power generation torque based on vehicle speed and energy recovery intensity level includes:

[0022] The power generation torque limiting coefficient is obtained based on the vehicle speed;

[0023] Based on the energy recovery intensity level, obtain the corresponding maximum power generation torque in real time;

[0024] Based on the power generation torque limit coefficient and the maximum power generation torque, the driver's actual requested power generation torque is obtained.

[0025] Preferably, the maximum power generation torque corresponding to the energy recovery intensity level in real time is determined based on the current maximum power generation torque that the driver can request and the corresponding torque limit coefficient;

[0026] The torque limitation coefficient is directly proportional to the energy recovery intensity level.

[0027] Further preferably, the vehicle controller obtains the maximum allowable charging power of the battery, the maximum executable generating torque of the motor, and the current speed of the motor in real time, and obtains the maximum generating torque that the driver can request based on the maximum executable power torque of the motor, the current speed of the motor, and the maximum allowable discharge power of the battery;

[0028] The maximum allowable charging power of the battery is sent by the battery management system, while the maximum executable torque of the motor and the current speed of the motor are sent by the motor controller.

[0029] Furthermore, when the power capacity information is less than a preset first threshold, the power mode level selection is less than a preset second threshold, and the energy recovery intensity is greater than a preset third threshold, the air conditioner controller controls the air conditioner to enter the energy-saving mode.

[0030] Furthermore, at any energy recovery intensity level, if the steering controller detects that the ABS function has been triggered, it sends a warning signal to the vehicle controller so that the vehicle controller can control the disengagement of energy recovery.

[0031] or,

[0032] In any power mode level, if the steering controller detects wheel slippage, it sends a warning signal and target torque to the vehicle controller, so that the vehicle controller requests the motor controller to execute the target torque.

[0033] Secondly, the present invention provides an electric vehicle control system based on personalized driving modes;

[0034] An electric vehicle control system based on personalized driving modes, comprising a large screen controller, a steering controller, an air conditioning controller, a vehicle controller, and a motor controller.

[0035] The large screen controller is used to respond to the driver's operation, obtain the driving mode set by the driver, and transmit it to the vehicle controller, the steering controller, and the air conditioning controller; wherein, the driving mode includes a power mode level and an energy recovery intensity level;

[0036] The steering controller is used to acquire the driving mode and control the assist level of the servo steering motor according to the driving mode; the air conditioning controller is used to acquire the driving mode and battery capacity information and control the working mode of the air conditioning according to the driving mode and SOC information.

[0037] The vehicle controller is used to acquire the accelerator pedal depth and vehicle speed in real time, and to acquire the driver's actual requested power torque based on the power mode level and accelerator pedal depth; to acquire the driver's actual requested power generation torque based on the vehicle speed and energy recovery intensity level; and to send the driver's actual requested power torque and driver's actual requested power generation torque to the motor controller to control the motor to execute.

[0038] Compared with the prior art, the beneficial effects of the present invention are:

[0039] 1. The technical solution provided by this invention designs a driving mode customization system with stepless adjustment of power response and stepless adjustment of energy recovery intensity (stepless speed regulation). Based on the personalized driving mode, torque, steering and air conditioning are controlled, thereby improving the user experience and satisfying the user's personalized driving experience.

[0040] 2. The technical solution provided by this invention fully considers torque safety control under extreme working conditions, thereby improving driving safety.

[0041] 3. The technical solution provided by this invention updates the target parameters corresponding to the energy recovery intensity level and power mode level in real time based on actual driving conditions and is customized according to each driver's driving situation. On the one hand, it is closer to the user's personal driving habits; on the other hand, it further ensures the safety of the user's driving. For example, when the user is driving on a low-friction road surface, he / she can choose a very low energy recovery level to ensure that the vehicle does not lock up or skid on the low-friction road surface, or he / she can choose the weakest power mode level to ensure that the vehicle does not skid. Attached Figure Description

[0042] The accompanying drawings, which form part of this invention, are used to provide a further understanding of the invention. The illustrative embodiments of the invention and their descriptions are used to explain the invention and do not constitute an improper limitation of the invention.

[0043] Figure 1 This is a schematic diagram of the custom driving mode settings on the large screen controller provided in an embodiment of the present invention;

[0044] Figure 2 This is a schematic diagram of the signal interaction process provided in an embodiment of the present invention;

[0045] Figure 3 This is a schematic diagram illustrating the calculation of torque percentage provided in an embodiment of the present invention;

[0046] Figure 4A schematic diagram illustrating the calculation of the maximum power torque that the current driver can request, provided for an embodiment of the present invention;

[0047] Figure 5 A schematic diagram illustrating the calculation of the maximum energy recovery torque that the current driver can request, provided for an embodiment of the present invention;

[0048] Figure 6 A schematic diagram illustrating the calculation of the actual requested power torque provided in an embodiment of the present invention;

[0049] Figure 7 This is a schematic diagram illustrating the calculation of the actual requested power generation torque provided in an embodiment of the present invention. Detailed Implementation

[0050] It should be noted that the following detailed descriptions are exemplary and intended to provide further illustration of the invention. Unless otherwise specified, all technical and scientific terms used in this invention have the same meaning as commonly understood by one of ordinary skill in the art to which this invention pertains.

[0051] Where there is no conflict, the embodiments and features in the embodiments of the present invention can be combined with each other.

[0052] Example 1

[0053] Existing driving modes cannot meet users' personalized needs and cannot closely reflect actual driving situations, resulting in a poor user experience. Therefore, this invention provides an electric vehicle control method based on personalized driving modes.

[0054] Next, combined Figures 1-7 This embodiment discloses a method for controlling an electric vehicle based on a personalized driving mode, which includes the following steps:

[0055] Step 1: The large screen controller (IHU) obtains the driving mode set by the driver and sends it to the vehicle controller (VCU), steering controller (EPS), and air conditioning controller (ACM) in real time via CAN communication. The driving mode includes the power mode level and the energy recovery intensity level.

[0056] The power mode levels include 11 levels. The power mode selection progress bar is configured on the large screen interface of the large screen controller. The progress bar ranges from 0 to 1, with a step gradient of 0.1, namely 0, 0.1, 0.2, 0.3, 0.4, 0.5, 0.6, 0.7, 0.8, 0.9, and 1.

[0057] The energy recovery intensity level includes 11 levels. The large screen interface is equipped with an energy recovery intensity progress bar, with a range from 0 to 1 and a step gradient of 0.1, namely 0, 0.1, 0.2, 0.3, 0.4, 0.5, 0.6, 0.7, 0.8, 0.9, and 1.

[0058] For example, after the vehicle is powered on, the large screen starts working, and the user enters the driving mode setting window through the large screen interface. This window is equipped with a power mode selection progress bar and an energy recovery intensity progress bar. The user can adjust the progress bars to personalize the power mode and energy recovery intensity settings.

[0059] In the power mode setting, when the user slides to the middle position, the power mode is level 0.5, and the large screen text prompts "Standard". When sliding to the right to the bottom, the power mode is level 1, and the large screen text prompts "Strong". When sliding to the left to the bottom, the power mode is level 0, and the large screen text prompts "Weak". No text prompts are given in other positions.

[0060] Under the energy recovery intensity mode setting, when the user slides to the middle position, the energy recovery intensity is level 0.5, and the large screen text prompts "Standard". When sliding to the right to the bottom, the energy recovery intensity is level 1, and the large screen text prompts "Strong". When sliding to the left to the bottom, the energy recovery intensity is level 0, and the large screen text prompts "Weak". No text prompts are given in other positions.

[0061] Furthermore, after the user sets the driving mode, the large screen controller saves the current power mode level and energy recovery intensity level. When the vehicle is powered off and then powered on again, it remembers the last driving mode setting.

[0062] Step 2: The vehicle controller obtains the accelerator pedal depth and vehicle speed in real time. Based on the power mode level and accelerator pedal depth, it obtains the driver's actual requested power torque. Based on the vehicle speed and energy recovery intensity level, it obtains the driver's actual requested power torque. The driver's actual requested power torque and driver's actual requested power torque are sent to the motor controller to control the motor to execute.

[0063] Furthermore, based on the power mode level and accelerator pedal depth, the driver's actual requested power torque is obtained, including:

[0064] (1) Obtain the torque request percentage based on the accelerator pedal depth and vehicle speed.

[0065] Specifically, at full throttle, the torque request percentage is 100% at any speed range; when the user releases the throttle, the torque request percentage is 0% at any speed range. Linear interpolation is used in between. Specific parameters can be determined through actual vehicle calibration, as shown in the table below:

[0066]

[0067]

[0068] After the vehicle controller collects the accelerator pedal depth and vehicle speed, it calculates the torque percentage by looking up a table.

[0069] (2) Determine the maximum power torque that the driver can request in real time based on the power mode level.

[0070] The maximum driver-requested torque corresponding to the power mode level in real time is determined based on the current maximum driver-requested torque and the corresponding power torque limit coefficient, which is proportional to the power mode level.

[0071] Specifically, the vehicle controller obtains the maximum executable torque of the motor, the current speed of the motor, and the maximum allowable discharge power of the battery in real time. Based on the maximum executable torque of the motor, the current speed of the motor, and the maximum allowable discharge power of the battery, it obtains the maximum power torque that the driver can request at present.

[0072] The maximum power torque that the driver can currently request is expressed as:

[0073] TQ_dr_max=MIN{TQ_dr,P_dis*9550 / N_motor}

[0074] Here, TQ_dr_max is the maximum power torque that the driver can request, TQ_dr is the maximum executable power torque of the motor, P_dis is the maximum allowable discharge power of the battery, and N_motor is the current motor speed. The maximum executable power torque and current motor speed are sent by the motor controller, while the maximum allowable discharge power of the battery is sent by the battery management system.

[0075] Based on the current maximum driver-requested torque, and according to the maximum driver-requested torque allocation principle under different power mode levels, the corresponding maximum driver-requested torque under different power mode levels is determined.

[0076] For example, if the power mode level is 1, the VCU sets the current maximum driver-requested torque TQ_dr_max to the maximum requestable torque under the current level. The maximum driver-requested torque under other mode levels is multiplied by the corresponding torque limit coefficient and decreases accordingly. The calculation of the maximum driver-requested torque under different power modes is shown in the table below:

[0077]

[0078]

[0079] The power torque limiting coefficient is preset and satisfies: 0 < λ0 < λ1 < λ2 < λ3 < λ4 < λ5 < λ6 < λ7 < λ8 < λ9 < 1.

[0080] (3) Based on the torque request percentage and the maximum power torque that the driver can request, obtain the driver's actual power torque request, expressed as:

[0081] TQ_dr_act = Maximum driver-requested torque per percentage point at the power mode level.

[0082] Furthermore, obtaining the driver's actual requested power generation torque based on vehicle speed and energy recovery intensity level includes:

[0083] (1) Obtain the power generation torque limit coefficient based on the vehicle speed.

[0084] Specifically, the VCU sets different torque generation limit coefficients κ based on the vehicle's current speed, as shown in the table below:

[0085] Power generation torque limiting factor K_1 … K_n

[0086] Among them, the power generation torque limiting coefficient is 0 < K_1 < … < K_n < 1, V_1 > 0 km / h;

[0087] (2) Obtain the maximum power generation torque in real time according to the energy recovery intensity level.

[0088] The maximum power generation torque corresponding to the energy recovery intensity level in real time is determined based on the current maximum power generation torque that the driver can request and the corresponding torque limit coefficient. The power generation torque limit coefficient is proportional to the energy recovery intensity level.

[0089] Specifically, the vehicle controller obtains the maximum allowable charging power of the battery, the maximum executable generating torque of the motor, and the current speed of the motor in real time. Based on the maximum executable power torque of the motor, the current speed of the motor, and the maximum allowable discharge power of the battery, it obtains the maximum generating torque that the driver can request at present.

[0090] The maximum torque that the driver can currently request for power generation is expressed as:

[0091] Q_ge_max=MIN{TQ_ge,P_ch*9550 / N_motor}

[0092] Where Q_ge_max is the maximum generator torque that the driver can request, TQ_ge is the maximum generator torque that the motor can execute, and N_motor is the current motor speed; the maximum allowable charging power of the battery is sent by the battery management system, and the maximum generator torque and current motor speed of the motor are sent by the motor controller.

[0093] Based on the current available torque for power generation by the driver, the maximum available torque for power generation by the driver is allocated according to the allocation principle of the maximum available torque for power generation by the driver under different energy intensity levels.

[0094] Specifically, if the energy recovery intensity level is 1, the VCU sets the maximum requestable generator torque TQ_ge_max for the current driver to be the maximum torque under the current level. The maximum requestable generator torque for the driver under other mode levels is multiplied by the torque limit coefficient and decreases accordingly. The calculation of the maximum requestable generator torque for the driver under different energy recovery levels is shown in the table below:

[0095]

[0096]

[0097] The rule for limiting the energy recovery torque is 0 < λ0 < λ1 < λ2 < λ3 < λ4 < λ5 < λ6 < λ7 < λ8 < λ9 < 1.

[0098] (3) Obtain the actual requested power generation torque of the driver based on the power generation torque limit coefficient and the maximum power generation torque.

[0099] The driver's actual requested generator torque is expressed as follows:

[0100] TQ_ge_act = Maximum generating torque that the driver can request corresponding to the energy recovery level * Generating torque limit coefficient.

[0101] In addition, when the vehicle speed is 0, the VCU does not allow energy recovery to prevent the vehicle from rolling backward, at which point TQ_ge_act equals 0.

[0102] Step 3: The steering controller controls the power assist level of the servo steering motor according to the power mode level. The power assist levels include soft, medium and hard, which represent the steering assist effect.

[0103] Specifically, power mode levels above 0.7 provide stronger power and a firmer steering assist, while power mode levels below 0.3 provide weaker power and a softer steering assist. Other power mode levels offer moderate steering assist, as shown in the table below:

[0104]

[0105] Step 4: The air conditioning controller obtains battery capacity information and, in conjunction with the power mode level and energy recovery intensity level, controls the air conditioning's operating mode.

[0106] Specifically, when the battery capacity is less than a preset first threshold A, the selected power mode level is less than a preset second threshold level by 0.3, and the energy recovery intensity is greater than a preset third threshold level by 0.8, the air conditioning controller puts the air conditioning into energy-saving mode; under other conditions, the air conditioning operates normally. This ensures vehicle power, thereby reducing overall vehicle energy consumption and extending range.

[0107] Steps 2, 3, and 4 are executed simultaneously to achieve driving control of the electric vehicle.

[0108] Furthermore, at any energy recovery intensity level, if the steering controller detects that the ABS function has been triggered, it sends a warning signal to the vehicle controller so that the vehicle controller can disengage energy recovery to avoid lock-up and skidding.

[0109] In any power mode level, if the steering controller detects wheel slippage, it sends a warning signal and target torque to the vehicle controller, so that the vehicle controller requests the motor controller to execute the target torque sent by the steering controller to prevent the slippage from worsening.

[0110] Furthermore, when the system does not allow energy recovery, such as when the vehicle is fully charged, the battery reports a serious fault, or the motor reports a serious fault, the VCU will feed this information back to the IHU, and a safety prompt will pop up on the large screen, such as "Energy recovery function is limited, please pay attention to braking".

[0111] Example 2

[0112] This embodiment discloses an electric vehicle control system based on a personalized driving mode, which is based on the electric vehicle control method based on a personalized driving mode described in Embodiment 1. The system includes a large screen controller, a steering controller, an air conditioning controller, a vehicle controller, and a motor controller. The large screen controller is communicatively connected to the steering controller, the air conditioning controller, and the vehicle controller, and the vehicle controller is communicatively connected to the motor controller.

[0113] The large screen controller is used to respond to the driver's operation, obtain the driving mode set by the driver, and transmit it to the vehicle controller, steering controller, and air conditioning controller; the driving mode includes power mode level and energy recovery intensity level.

[0114] The steering controller acquires the driving mode and controls the assist level of the servo steering motor accordingly. The air conditioning controller acquires driving mode and battery capacity information and controls the air conditioning operating mode according to the driving mode and SOC information. The vehicle controller acquires the accelerator pedal depth and vehicle speed in real time, and obtains the driver's actual requested torque based on the power mode level and accelerator pedal depth. It also obtains the driver's actual requested generator torque based on vehicle speed and energy recovery intensity level. The driver's actual requested torque and generator torque are then sent to the motor controller to control the motor execution.

[0115] The descriptions of each embodiment in the above embodiments have different focuses. For parts not described in detail in a certain embodiment, please refer to the relevant descriptions in other embodiments.

[0116] The above description is merely a preferred embodiment of the present invention and is not intended to limit the invention. Various modifications and variations can be made to the present invention by those skilled in the art. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present invention should be included within the scope of protection of the present invention.

Claims

1. An electric vehicle control method based on personalized driving modes, characterized in that, include: The large screen controller obtains the driving mode set by the driver and sends it to the vehicle controller, steering controller and air conditioning controller. The driving mode includes the power mode level and the energy recovery intensity level. The vehicle controller acquires the accelerator pedal depth and vehicle speed in real time, and based on the power mode level and accelerator pedal depth, obtains the driver's actual requested power torque, including: Calculate the percentage of torque requested based on the accelerator pedal depth and vehicle speed; The maximum power torque that the driver can request is determined in real time based on the power mode level. Based on the percentage of torque request and the maximum power torque that the driver can request, obtain the driver's actual power torque request; Based on vehicle speed and energy recovery intensity level, obtain the driver's actual requested power torque; send the driver's actual requested power torque and the driver's actual requested power torque to the motor controller to control the motor to execute; The steering controller controls the assist level of the servo steering motor according to the power mode level; The air conditioning controller obtains battery capacity information and, in conjunction with the power mode level and energy recovery intensity level, controls the air conditioning's operating mode. When the battery capacity is less than a preset first threshold, the power mode level is less than a preset second threshold, and the energy recovery intensity is greater than a preset third threshold, the air conditioning controller will control the air conditioner to enter energy-saving mode.

2. The electric vehicle control method based on personalized driving modes as described in claim 1, characterized in that, The maximum driver-requested torque corresponding to the power mode level in real time is determined based on the current maximum driver-requested torque and the corresponding torque limit coefficient. The torque limit coefficient is proportional to the power mode level.

3. The electric vehicle control method based on personalized driving modes as described in claim 2, characterized in that, The vehicle controller obtains the maximum executable power torque of the motor, the current speed of the motor, and the maximum allowable discharge power of the battery in real time. Based on the maximum executable power torque of the motor, the current speed of the motor, and the maximum allowable discharge power of the battery, it obtains the current maximum power torque that the driver can request. The maximum executable torque and current speed of the motor are sent by the motor controller, while the maximum allowable discharge power of the battery is sent by the battery management system.

4. The electric vehicle control method based on personalized driving modes as described in claim 1, characterized in that, The process of obtaining the driver's actual requested power generation torque based on vehicle speed and energy recovery intensity level includes: The power generation torque limiting coefficient is obtained based on the vehicle speed; Based on the energy recovery intensity level, obtain the corresponding maximum power generation torque in real time; Based on the power generation torque limit coefficient and the maximum power generation torque, the driver's actual requested power generation torque is obtained.

5. The electric vehicle control method based on personalized driving modes as described in claim 4, characterized in that, The maximum power generation torque corresponding to the energy recovery intensity level in real time is determined based on the current maximum power generation torque that the driver can request and the corresponding torque limit coefficient. The torque limitation coefficient is directly proportional to the energy recovery intensity level.

6. The electric vehicle control method based on personalized driving modes as described in claim 5, characterized in that, The vehicle controller obtains the maximum allowable charging power of the battery, the maximum executable generating torque of the motor, and the current speed of the motor in real time. Based on the maximum executable power torque of the motor, the current speed of the motor, and the maximum allowable discharge power of the battery, it obtains the current maximum generating torque that the driver can request. The maximum allowable charging power of the battery is sent by the battery management system, while the maximum executable generating torque of the motor and the current speed of the motor are sent by the motor controller.

7. The electric vehicle control method based on personalized driving modes as described in claim 1, characterized in that, At any energy recovery intensity level, if the steering controller detects that the ABS function has been triggered, it sends a warning signal to the vehicle controller so that the vehicle controller can disengage energy recovery. or, In any power mode level, if the steering controller detects wheel slippage, it sends a warning signal and target torque to the vehicle controller, so that the vehicle controller requests the motor controller to execute the target torque.

8. An electric vehicle control system based on personalized driving modes, characterized in that, The electric vehicle control method based on personalized driving mode according to any one of claims 1-7 includes a large screen controller, a steering controller, an air conditioning controller, a vehicle controller, and a motor controller. The large screen controller is used to respond to the driver's operation, obtain the driving mode set by the driver, and transmit it to the vehicle controller, the steering controller, and the air conditioning controller; wherein, the driving mode includes a power mode level and an energy recovery intensity level; The steering controller is used to acquire the driving mode and control the assist level of the servo steering motor according to the driving mode; the air conditioning controller is used to acquire the driving mode and battery capacity information and control the working mode of the air conditioning according to the driving mode and SOC information. The vehicle controller is used to acquire the accelerator pedal depth and vehicle speed in real time, and to acquire the driver's actual requested power torque based on the power mode level and accelerator pedal depth; to acquire the driver's actual requested power generation torque based on the vehicle speed and energy recovery intensity level; and to send the driver's actual requested power torque and driver's actual requested power generation torque to the motor controller to control the motor to execute.

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