Acceleration control method for an electric vehicle
A technology of acceleration control and electric vehicles, which is applied in the direction of electric vehicles, control drives, control devices, etc., can solve the problems of not fully considering the driving environment of electric vehicles, single judgment basis, and optimization of acceleration limits without speed ranges, etc., to ensure ride comfort Performance and driving safety, superior overall performance, and the effect of improving safety and economy
Active Publication Date: 2021-06-04
XIAMEN KING LONG UNITED AUTOMOTIVE IND CO LTD
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Problems solved by technology
[0004] Although this technical method can effectively prevent the electric vehicle from overspeeding, it only uses a single vehicle speed and acceleration value as the basis for judgment in the control process, without fully considering the driving environment of the electric vehicle, and does not fully evaluate the acceleration of each speed segment during the driving process. Perform constrained optimization
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[0021] Specific embodiments of the present invention will be described below with reference to the accompanying drawings. In order to provide a comprehensive understanding of the present invention, many details are described below, but it will be apparent to those skilled in the art that the present invention can be practiced without these details.
[0022] A method for controlling acceleration of an electric vehicle, comprising the steps of:
[0023] Step 1: Select the vehicle to enter the power mode or the economic mode according to the accelerator opening A, the current vehicle speed V and the current acceleration a during the driving of the vehicle. Among them, the power mode is mainly used for driving on steep roads, and the economic mode is mainly used for driving on level roads and low-slope roads.
[0024] Step 1.1: Combined with the actual test and debugging results of the vehicle, optimize the setting period of the vehicle to 3s, the setting threshold of the acceler...
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An acceleration control method for an electric vehicle, relating to the technical field of new energy vehicles, comprising the following steps: S1, selecting a vehicle to enter a power mode or an economical mode according to the accelerator opening A, the current vehicle speed V, and the current acceleration a during vehicle driving; S2 . When entering the power mode, the acceleration is not limited; S3. When entering the economic mode, the full speed range of the vehicle is divided into multiple speed ranges and the acceleration limit in each speed range is set. According to the speed range where the current speed V is located The acceleration limit value controls the output torque of the motor, so as to realize the segmental limitation of acceleration. When the vehicle enters the economic mode, the present invention divides the full speed range into segments and sets the acceleration limit of each segment, thereby making the acceleration of the vehicle more gentle and the overall performance more superior, fully ensuring people's ride comfort , and effectively improve the safety and economy of the vehicle.
Description
technical field [0001] The invention relates to the technical field of new energy vehicles, in particular to an acceleration control method for electric vehicles. Background technique [0002] With the rapid development of new energy vehicles, people have higher requirements for the ride comfort of electric vehicles. Because of the characteristics of the drive motor, electric vehicles have better acceleration performance at the start and low-speed stages, but each driver's driving style is different. If there is a large acceleration during the driving of an electric vehicle, it will make the driver and passengers feel uncomfortable. , and there is a greater security risk. Therefore, limiting the acceleration of the electric vehicle during driving can effectively improve the stability and safety of the electric vehicle, thereby effectively improving people's riding comfort. [0003] The Chinese patent with application number CN106740271A discloses a method and device for li...
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IPC IPC(8): B60L15/20
CPCB60L15/20B60L2240/12B60L2240/14B60L2240/423B60L2260/26Y02T10/72
Inventor 林陈立龚刚林思学王铃燕方媛林杰锋
Owner XIAMEN KING LONG UNITED AUTOMOTIVE IND CO LTD