1776 results about "Pure electric vehicle" patented technology

The invention discloses a CAN bus-based pure electric vehicle charging method and a CAN bus-based pure electric vehicle charging system. The charging system comprises a complete vehicle controller, a battery management controller, a power battery pack, a 12V storage battery, a charger and a DC converter. The controllers perform information interaction through the CAN bus; the complete vehicle controller manages and controls the complete vehicle system state; a battery management system acquires the information of the power battery and the 12V storage battery and transmits the battery information to the complete vehicle controller; the charger charges the power battery during work; and the power battery charges the 12V storage battery through DC / DC and provides a power supply for complete vehicle 12V electric equipment. The CAN bus-based pure electric vehicle charging method and the CAN bus-based pure electric vehicle charging system have the advantages of monitoring the complete vehicle system state, providing a working power supply for charging process-related controllers through the storage battery, flexibly controlling the charging of the storage battery through the DC converter and guaranteeing the complete vehicle safety in the charging process.

The invention relates to a vehicle control method based on multi-information integration. The method comprises the following steps that: a vehicle controller unit reads vehicle state parameters in real time and correspondingly sends the vehicle state parameters to modules of the vehicle controller unit; a road slope angle calculation module, a vehicle quality calculation module, a vehicle auxiliary power calculation module and a future path forecasting module of the vehicle controller unit calculate the parameters and correspondingly sends the calculated parameters to the modules; a power battery state of charge (SOC) forecasting module determines the optimal target SOC trace curve of a power battery in certain time; a motor target torque calculation module calculates a motor target torque; a power distribution module distributes output power of an auxiliary power unit (APU) system and the power battery according to vehicle accessory power and the motor target torque; the motor target torque calculation module sends the motor target torque to a motor controller unit for controlling the motor to be driven; the power distribution module sends APU target power to an APU controller unit so as to control an auxiliary power source to work; the vehicle controller unit sets a sampling interval and reads the vehicle parameters; and the steps are performed repeatedly until the vehicle is power off. The vehicle control method is applied to pure electric vehicles and hybrid electric vehicles.

The invention relates to a control method for eliminating jitter of a pure electric vehicle. A vehicle control unit analyzes the real driving intention of a driver by acquiring accelerator pedal signals, gear signals and brake pedal signals, and thus calculates driver required torque TqDrvReq; a motor controller feeds back a motor actual revolving speed signal MotSpd of the vehicle control unit, and the vehicle control unit filters the MotSpd to obtain MotSpdFil. Through the difference between the MotSpdFil and the MotSpd, corrected torque TqCorr is calculated by adopting a PID (Proportion Integration Differentiation) algorithm to correct the driver required torque. Through superposition of the TqDrvReq and the TqCorr, final required torque TqReq is obtained and is transmitted to the motor controller to execute the torque. The method can eliminate the jitter of the vehicle; compared with the traditional methods of reducing the gear clearance and optimizing the driving structure, the method has the advantages of low cost, simplicity in implementation, easiness in verification, good effect and the like.

The invention relates to a thermal management system of a whole pure electric vehicle. The thermal management system of the whole pure electric vehicle is characterized in that the thermal management system of the whole pure electric vehicle comprises a motor system cooling circuit, a battery system low-temperature radiating circuit, a battery system high-temperature cooling circuit, a battery system charging and heating circuit, a passenger compartment heater heating circuit and a passenger compartment refrigerating circuit. The thermal management system of the whole pure electric vehicle has the advantages that cooling requirements of a motor system are effectively met, heating and cooling requirements of a battery system are effectively met, and refrigerating and heating requirements of a passenger compartment are effectively met.

The invention discloses a method for setting target torque of a motor applicable to a pure electric vehicle. The method is characterized in that: a general controller serves as a control core of the pure electric vehicle and is a main executor of a general control strategy. The method comprises the following steps that: the general controller judges a driving intention of a driver by acquiring driver signals of an accelerator pedal, a brake pedal, a gear switch and the like, confirms a traction or brake mode, performs information interaction with a motor controller and a battery management system, calculates target traction or brake torque, executes a corresponding general control strategy and outputs corresponding torque information and directional signals of the motor; and a related control instruction is transmitted to the motor controller, and the motor controller controls the motor to work under drive or brake working conditions according to the control instruction, so that energy distribution of the pure electric vehicle from an energy storage system to a motor driving system is effectively controlled, and the energy storage system, the motor driving system and the like are correspondingly protected.

The invention discloses a pure electric vehicle braking energy recovery control system and method based on a DCT (Data Communication Terminal), relating to the technical field of electric vehicles. The control system comprises a vehicle-mounted storage battery, a motor, a two-gear DCT automatic gearbox, a vehicle speed sensor, a master cylinder pressure sensor, a vehicle control unit, a battery management system, a motor controller, a gearbox controller and a feedback type brake anti-lock system, wherein the vehicle-mounted storage battery supplies power for the motor, and the motor is mechanically connected with the DCT automatic gearbox; and the vehicle control unit, the battery management system, the motor controller, the gearbox controller, the feedback type brake anti-lock system, the vehicle speed sensor and the master cylinder pressure sensor carry out information communication and instruction issue through a network and hard wires. The invention also discloses the pure electric vehicle braking energy recovery control method based on the DCT. The energy utilization and the driving mileage of the vehicles are increased.

The invention discloses an electrical system for a pure electric vehicle. A positive end bus high-voltage direct current contactor, a negative end bus high-voltage direct current contactor and a high-voltage safety switch are arranged between a battery management system of the electrical system and a driving motor controller; and a key switch is used for controlling low-voltage power supply relays of all electrical parts. When the electric vehicle is stopped to be charged, a vehicle-mounted charger independently supplies power to a low-voltage power supply end of the battery management systemand a high-voltage direct current bus; when the key switch is adjusted to an ON position, all of a vehicle controller, the battery management system and the vehicle-mounted charger have no serious faults, and the negative end bus high-voltage direct current contactor, a precharging high-voltage relay and the positive end bus high-voltage direct current contactor are sequentially closed; and when the key switch is adjusted to a Start position, the electrical system can accept an instruction of a driver to drive the vehicle to run. When the key switch is switched on, an electric power-assisted steering device, an electric air conditioner, a braking power-assisted vacuum pump, an electric pump and an electric cooling fan are all controlled to work, and a low-voltage storage battery is charged through buck DC / DC.

The invention relates to a thermal management system for a pure electric vehicle, which is characterized in that it includes an electric drive system and a charger cooling circuit, a power battery cooling circuit, a power battery charging heating circuit, a passenger compartment heating circuit and a passenger compartment refrigeration circuit; The electric drive system and charger cooling circuit includes radiators, fans, kettles connected by pipelines, the electric drive system and charger cooling water pump installed in the circuit, as well as the motor controller and DCDC, as well as the charger and motor. The radiator realizes liquid-gas heat exchange to cool the heat dissipation components. Improve the environmental adaptability of electric vehicles, the power performance in high-temperature environments, the durability of key components, and the energy utilization efficiency of the entire vehicle.

The invention discloses a pure electric vehicle control unit calibration system based on CAN (controller area network) bus, which comprises an upper computer with two-way communication and a lower computer with two-way communication. The upper computer comprises a data storage module, an MAP (macro assembly program) chart optimization module, a parameter calibration module and a CAN bus communication processing module. The lower computer is a pure electric vehicle control unit (VCU) and comprises a CAN bus communication module, a data acquisition module, a calibrated data storage module and a control algorithm module. The invention further provides a pure electric VCU online calibration method based on the CAN bus. By introducing the CAN bus into the design of the electric vehicle control unit calibration system, the invention realizes online optimization of the control parameters of power, response speed, electricity consumption and the like of the pure electric vehicle, sloves the problems of difficulty in modifying the parameters, long development cycle and poor maneuverability in the prior art, and solves the problem that differences of the operating conditions and diversity of the requirements on power performance and life mileage of the vehicles under different uses, requirements to the control parameters of the vehicle control units are different due to the type variety of pure electric vehicles.

The invention relates to a method for estimating surplus mileage of a pure electric vehicle based on power consumption per kilometer, which comprises the following steps that: 1, an HCU (hybrid vehicle control unit) receives a message sent by a BCU (battery control unit) through a bus, busbar voltage U[bus], busbar current I[bus], and SOC of a battery pack are extracted from the message; 2, the HCU receives a message sent by an ABS (antilock brake system) controller through the bus, and a speed signal v is extracted from the message; 3, an available battery capacity B of the current battery pack being equal to B[Ah]*(SOC-SOC[lower limit]) is obtained according to the current available SOC, the use limitation of the SOC and the total capacity B[Ah] of the battery pack Ah; 4, an available battery energy E[available] of the battery pack being equal to U[bus]* B[available] can be calculated according to the busbar voltage U[bus] and the available battery capacity B of the current battery pack; and 5, surplus mileage S[surplus] being equal to E[available] / W[average] can be calculated according to the power consumption per kilometer W[average] and E[available]. The method automatically takes external influencing factors into consideration, so standardization processed through vast of experiments is unnecessary, and the accuracy is higher.

The invention discloses a torque recycling control method and control system of a pure electric vehicle. The method comprises the steps of calculating a current recyclable target torque according to current driving parameters of the vehicle, obtaining a current actual request torque, and presetting a biggest reclaimed torque not causing locking of the vehicle; when the anti-lock braking system ABS of the vehicle is activated and the brake pedal of the vehicle is not stepped on, determining to conduct filtering according to a fast filtering gradient or a regular filtering gradient based on the absolute value of the current recyclable target torque and the absolute value of the biggest reclaimed standardization torque. According to the torque recycling control method and control system of the pure electric vehicle, the vehicle can achieve steady transition before and after the interference of the ABS interference by controlling different filtering gradients, and it is guaranteed that the vehicle is provided with the corresponding reclaimed torque and meanwhile locking of vehicle wheels is not caused when the vehicle slides on a low attachment coefficient road; meanwhile, by setting the reset condition of a control state, the repeating interference of the ABS in the same reclaimed interval is avoided, and the problem of vehicle crowding is solved.

The invention relates to a pure electric vehicle, particularly to the starting shake of the pure electric vehicle. When the electric vehicle is started, and power is transferred by the output torque of a motor through a transmission system, the torque with nonlinear changes is transferred during transient transition. The step length of the expected torque responded by a motor, of the whole vehicle, is properly magnified, and simultaneously, a rotating speed feedback link is increased to correct the expected torque of the whole vehicle. The rotating speed feedback link comprises five parts: motor rotating speed detection, a low pass filter, motor rotating speed differential, an inertia link and limiting amplitude output. Through the rotating speed feedback link, the torque for correcting the expected torque can be estimated, the dynamic response process of the transmission system can be improved when the power is transferred, the effect of restraining the starting shake is achieved, and the acceleration performance of the whole vehicle is taken into account.

The invention relates to a lithium iron phosphate intercalated composite material, a preparation method thereof and a lithium ion battery adopting the multi-layer graphene / lithium iron phosphate intercalated composite material as an anode material. In the prior art, the electronic conductivity of the lithium iron phosphate material is poor, high-rate charging / discharging capacity of the lithium ion battery adopting the lithium iron phosphate material as the anode material is poor. The purpose of the present invention is to solve the problems in the prior art, and improve the rapid charging capacity of the power lithium ion battery so as to meet the requirements of the pure electrocar. The composite material is prepared through the following steps that: a rheological phase reaction method is adopted for multi-layer graphene, a trivalent iron salt, a phosphorus compound, a lithium compound and carbon source of small organic molecule to obtain a composite precursor, then the precursor is sintered to obtain the multi-layer graphene / lithium iron phosphate intercalated composite material. The anode slurry of the lithium ion battery anode plate comprises the composite material, a conductive agent and polyvinylidene difluoride. The composite material is an intercalated structure, wherein the lithium iron phosphate particles are intercalated between the multi-layer graphene to form the intercalated structure. The trivalent iron salt is adopted as the raw material, such that the cost is reduced. The lithium ion battery has good charging / discharging cycle performance, wherein the specific capacity is more than 60 mA.h.g<-1> at the rate of 20C.

The invention provides a big data acquisition and processing system and an electric vehicle endurance estimation method based on the same; the system includes a vehicle-mounted sensor, a GPS positioning system, a road information perception system, a cloud data receiving system, a data transmission processing system and an online computing system. Real-time road, traffic, weather and other information are obtained from a cloud server, and then a future driving state of an electric vehicle is forecasted based on the data. According to the vehicle real-time data under an actual driving state, a vehicle dynamic model and a battery model obtained from calculation are more accurate than a traditional vehicle dynamic model obtained based on a physical equation in an electric vehicle driving process. The estimation method can improve the estimation accuracy of the remaining endurance mileage of the networking pure electric vehicle to a great extent. In addition, according to the real-time data obtained from the cloud, a vehicle use strategy is better planned, and the control strategy of the electric vehicle is optimized, so as to improve the service life of the electric vehicle.

The invention discloses a controller and a control method of a pure electric vehicle. The controller is realized by using an embedded processor internally provided with an A / D (Analog / Digital) conversion function and a CAN (Controller Area Network) bus conversion function, therefore, an A / D conversion interface circuit in the controller is saved, the CAN bus conversion circuit is simplified, elements in the controller are further reduced, the circuit structure is simplified, the fault probability of the controller can be reduced, and the reliability of the controller is improved. Meanwhile, the invention realizes the control on all CAN bus nodes of the pure electric vehicle based on a CAN bus by using the interrupt service program of a CPU (Central Processing Unit).

The invention provides a hill descent control system of a pure electric vehicle and a control method of the hill descent control system. The hill descent control system comprises a vehicle signal unit, a hill descent unit, a vehicle control unit, an anti-lock braking system, a driving motor and an active brake unit. The vehicle signal unit, the hill descent unit and the anti-lock braking system are connected with the vehicle control unit. The vehicle control unit is connected to the driving motor through a motor controller. The vehicle control unit is also connected with the active brake unit. According to the hill descent control system, different slopes correspond to different vehicle speed intervals, and preferably the motor is used for generating power and recovering energy; especially down a slope along a long ramp, the burden of the braking system is relieved, and potential accidents caused by thermal failure due to an overheated brake are eliminated.

The invention discloses a composite power energy management prediction control system of a pure-electric vehicle. The system comprises a motor, a power storage battery and a super capacitor, wherein the power storage battery and the super capacitor are connected with a motor drive control device through a bidirectional DC-DC (direct current) converter respectively; the motor drive control device is connected with the motor; and the system also comprises a microprocessor control system and a vehicular navigation system, a switch pedal potentiometer, a brake pedal potentiometer, a motor detection unit, a power storage battery energy management system and a super capacitor energy management system connected with the microprocessor control system. The system disclosed by the invention can make full use of energy resources, improve energy recovery, increase the once-charge travel distance of the electric vehicle, protect the storage battery, prolong the service life of the storage battery and enhance the power performance of the whole electric vehicle.

The invention discloses a prediction method and system of a real-time driving mileage of pure electric vehicles. The method comprises the following steps that: (1) a vehicle controller reads signals of a battery management system and a vehicle speed signals; (2) the discharge energy used by a high-voltage storage battery system is calculated according to the signals of the battery management system; (3) the total power consumption of current key circulation is calculated according to the current battery voltage and the current battery current of the battery management system; (4) the total mileage of current circulation is calculated according to real-time vehicle speed signals; (5) the driving mileage of the pure electric vehicle is corrected according to the total power consumption of the current total key circulation and the total mileage of the current circulation. The driving mileage of the vehicle is corrected more reasonably according to the discharge capacity of the current key circulation and the mileage, so that the calculation precision of the driving mileage of the vehicle is improved, and a more accurate control basis is provided for the reasonable use of the pure electric vehicles and the prolonging of service life and the like. The predication method and system can be widely applied to the predication of the driving mileage of the pure electric vehicles.

The invention discloses a ramp way control method of a pure electric vehicle. The ramp way control method of the pure electric vehicle includes the following steps: collecting angle information of a full vehicle and judging a running state of the full vehicle according to the angle information; acquiring state information of the full vehicle when the running state of the full vehicle is judged as an uphill state, and judging whether the full vehicle is in an uphill starting state according to the state information of the full vehicle, wherein the state information of the full vehicle comprises a current speed of the full vehicle; and comparing the current speed of the full vehicle with a target speed and calculating uphill starting torsion of the full vehicle when the full vehicle is in the uphill starting state, and sending the uphill starting torsion of the full vehicle to a motor control system of the full vehicle to drive the full vehicle to output corresponding torsion. According to the ramp way control method of the pure electric vehicle, a torsion request numerical value when the vehicle runs on a ramp way is calculated according to a current state of the full vehicle, accordingly the corresponding torsion is output by the motor control system, so that safe reliability and comfort when the full vehicle runs on the ramp way are guaranteed.

The invention discloses a method for monitoring battery data under a parking state of a pure electric vehicle and a vehicle-mounted terminal. The method comprises the steps that the fact that the vehicle is under the parking state is determined; a first timer is started; after the first timer reaches the first preset duration, an awaking signal is output to a battery management system in the vehicle; the battery data reported by the battery management system are received; the battery data are sent to a control platform; a dormancy signal is output to the battery management system to enable the battery management system to enter a dormancy or closed state. The method for monitoring the battery data under the parking state of the pure electric vehicle and the vehicle-mounted terminal can monitor the battery data under the parking state of the pure electric vehicle, and not only can collect accurate battery voltage and temperature data, but also do not consume a large amount of energy capacity of a battery in the whole working process.

The invention discloses a scheme for controlling the grade parking of a permanent magnet motor-driven pure electric vehicle. The pure electric vehicle has an electrical system comprising a battery pack, a motor, a power converter, a motor controller and a vehicle controller and further comprising corresponding voltage, current and tilt sensors. The scheme comprises two steps of: (1) detection for the initial position of a rotor of a permanent magnet synchronous motor: a detection voltage is applied to the permanent magnet synchronous motor by the power converter, and the initial spatial position of the motor rotor in the case that the vehicle is stationary is calculated through a current feedback signal; and (2) torque self-balancing strategy based on vector control: the torque self-balancing characteristic can enable driving torque to track load torque automatically. The torque required by parking is calculated in accordance with the tilt angle of a ramp on which the vehicle is to be parked, and then, reasonable current amplitude and phase are given according to the initial position of the rotor and the torque required by grade parking in order to enable the driving torque to be equal to the load torque, therefore, stationary parking of the vehicle on the grade is realized.

The invention discloses a high-voltage and low-voltage power-on / off time sequence control method of a pure electric vehicle and belongs to the technical field of electronic control of new energy source vehicles. The high-voltage and low-voltage power-on / off time sequence control method comprises the following steps: activating KL15, enabling a VCU (Vehicle Control Unit) to be in a waiting mode from a sleeping mode and keeping for time T1; judging whether a KL15 activating state is changed or not; if the KL15 state is not changed, enabling the VCU to be in an operating mode, controlling a low-voltage controller to finish low-voltage power-on self inspection, and receiving an operating mode signal fed back by the low-voltage controller; enabling the VCU to receive the operating mode signal fed back by the low-voltage controller, and sending a high-voltage power-on request instruction to each high-voltage load controller, and sending a relay closing instruction to a BMS (Battery Management System); if the high-voltage power-on process is finished, disconnecting the KL15; enabling the VCU to be in the waiting mode from the operating mode and keeping for time T2; judging whether a KL15 disconnected state is changed or not; and if the KL15 state is not changed, enabling the VCU to control a whole vehicle power system to finish a high-voltage power-off process. By adding the waiting mode, a phenomenon that a user turns a key switch repeatedly so that a relay has a sticking fault is avoided, and thus the service life of the relay is prolonged.

The invention discloses a method and a system for estimating the remaining driving range of a pure electric vehicle. The method comprises the following steps: after the whole vehicle is powered on, the initial power consumption per kilometer and the initial average power consumption information are read out, and the battery and the whole vehicle state are simultaneously detected; According to theSOC, SOH and voltage of the battery, the current available power of the battery is calculated. Calculating the initial remaining driving range according to the calculated current available power of the battery and the initial power consumption per kilometer; Updating the information of power consumption per kilometer and average power consumption, calculating the remaining mileage in real time andcalculating the mileage weighting, so as to obtain stable mileage by weighting the difference of mileage, and prevent the mileage from fluctuating greatly; When the power of the whole vehicle is cutoff, the VCU of the whole vehicle stores the power consumption per kilometer and the average power consumption per kilometer traveled by the vehicle. The estimation method of the invention can effectively improve the estimation accuracy of the remaining driving range of the vehicle.

The invention provides a power battery actual capacity estimation method. The estimation method is based on a battery mathematical model, the open-circuit voltage and capacity of a battery are identified by utilizing a system identification algorithm, the battery capacities, corresponding to the battery open-circuit voltages OCV1 and OCV2, are respectively recorded as Cap1 and Cap2, meanwhile the battery capacity Cap3 is estimated by utilizing an AH integral algorithm, and then the Cap1, Cap2 and Cap3 are weighted and filtered to obtain battery capacity Cap0, and finally, the Cap0 is filtered to obtain the actual battery capacity in accordance with the engineering application requirement. The power battery actual capacity estimation method has the advantages that the influence of the identification algorithm and the battery operating conditions on the actual capacity estimation can be avoided; and the estimation method is applicable to estimating the actual capacity of power batteries for pure electric vehicles and power batteries for hybrid electric vehicles.

The invention discloses a timing and quantitative charging control system and method for a pure electric vehicle. After charging equipment is plugged into the vehicle, a BCM and a vehicle-mounted charging machine are controlled by a VCU, and charging is started; when charging is conducted on the vehicle, a timing and quantitative charging control module counts time and electricity quantity, when set time or set electricity quantity is reached, the timing and quantitative charging control module transmits a charging ending instruction to the VCU, and the VCU controls the BCM and the vehicle-mounted charging machine to stop the charging process. The timing and quantitative charging control system and method for the pure electric vehicle can set the charging time or charging quantity of the electric vehicle according to practical situations of people to avoid peak electricity usage, and off-peak electricity is used for charging the electric vehicle. The timing and quantitative charging control system and method for the pure electric vehicle can achieve timing and quantitative charging of the vehicle for family charging equipment or pile charging equipment without the help of vehicle external connection appointment equipment, and solve the problems that the pure electric vehicle depends on the vehicle external equipment too much during charging and waste is caused by nonuse of too much remaining electricity quantities of the vehicle.

The invention discloses an automatic parking control method of a pure electric vehicle. A vehicle control unit (VCU) receives various signals of the vehicle, performs logic judgment on different working conditions and controls a hydraulic braking system, a motor control unit (MCU) and a parking pawl driving device as well as instrument information display and P on / off light display. The control method is divided into an uphill control mode, a downhill control mode, a flat-road control mode and a parking control mode. The automatic parking control method of the pure electric vehicle is capable of automatically applying appropriate braking force to the four wheels of the vehicle on a slope or at an intersection for green light, and locking a transmission by use of a parking pawl. When the vehicle starts, the braking force is controlled to be released and the locking of the transmission is cancelled in proper time, and therefore, the automatic parking function is realized and traffic accidents can be avoided. While the functional requirements are met, the vehicle weight is reduced and the vehicle manufacturing cost is reduced.

The invention discloses an active charge / discharge balancing system of a power battery, which comprises the following parts: a first part of a hardware frame for establishing a charge / discharge balancing system of a battery pack; a second part of a method for implementing balanced charge / discharge among battery packs; a third part of the implementation of the method which comprises the steps of judging the state of the battery pack and preparing for the charge / discharge, and controlling the charge / discharge of a single battery in the battery pack to realize in-group balance; and a fourth part of quitting a charge / discharge mode, storing charge / discharge data of the battery pack and displaying the charge / discharge data via a display. The active balanced charge / discharge system of the power battery can be used for charging and discharging power batteries of pure electric vehicles or hybrid electric vehicles. The traditional active balancing technique has the defects of bad balancing effect, high requirement on capacitance, inductance or a DC / DC converter, complex control and the like, and is difficult to balance charging and discharging processes at the same time. In the invention, the charge / discharge hardly wastes any energy and can be balanced rapidly. The invention has simple battery grouping technique and high reliability.

The invention discloses an adaptive suppression method for rapid acceleration shaking of a pure electric vehicle. The adaptive suppression method comprises the following steps that a vehicle control unit works out the torque required by a driver; the vehicle control unit receives an actual revolving speed signal feed back from a motor and conducts filtering through a high-order band filter; a deviation revolving speed is obtained by subtracting the control target zero revolving speed and revolving speed of the motor after filtering; a self-adaptive anti-shake dynamic torque output by a PID controller is obtained through a PID control algorithm according to the deviation revolving speed; the maximum saturation value and the minimum saturation value of the self-adaptive anti-shake dynamic torque output by the PID controller are limited to obtain the final self-adaptive anti-shake dynamic torque; and the torque required by the driver and the self-adaptive anti-shake dynamic torque are added, and the final targeted torque value sent to a motor controller is obtained. Compared with a PID control method aiming at limiting the torque growth slope and utilizing the motor revolving speed smoothing value, the adaptive suppression method is good in adaptability, can achieve calibration and verification easily and can take vehicle comfort and accelerating performance into consideration.