A method for regenerative braking force distribution of pure electric vehicles
A technology of regenerative braking force and pure electric vehicles, which is applied in the direction of electric vehicles, electric braking systems, brakes, etc., can solve the problems that the braking force distribution method cannot simultaneously ensure the recovery of braking energy and maximize the braking safety, and meet the requirements of The total braking demand of the front and rear axles, and the effect of achieving a reasonable distribution
Active Publication Date: 2022-02-08
JILIN UNIV
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Problems solved by technology
[0014] The purpose of the present invention is to overcome the problem that the existing braking force distribution method cannot ensure the maximum recovery of braking energy and the best braking safety due to limitations of various factors such as hardware and software. Decoupling pure electric vehicles with front motor and front axle, comprehensively considering the ideal braking force distribution curve, ECE regulations off-line and rear axle braking force limit and other limiting factors, in order to stimulate motor regeneration as much as possible under the premise of ensuring braking safety Braking potential, so as to balance the contradictory requirements of maximizing braking energy recovery and optimal braking safety, and propose a regenerative braking force distribution method for pure electric vehicles
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[0151] Specific embodiments of the present invention will be described below in conjunction with the accompanying drawings, so that those skilled in the art can better understand the present invention. It should be noted that in the following description, some parameters that come from other software modules of the braking system and have little relevance to the main content of the present invention will be directly applied here and will not be discussed in detail.
[0152] The present invention is aimed at the decoupled pure electric vehicle with a drive motor in front of the front axle in the laboratory, and comprehensively considers the ideal braking force distribution curve, ECE regulations off-line and rear axle braking force limit and other limiting factors to determine the front axle braking force Boundary conditions; at the same time, in order to balance the contradictory requirements of maximum braking energy recovery and optimal braking safety, the fuzzy control metho...
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The invention introduces a regenerative braking force distribution method for pure electric vehicles. The target model is a pure electric vehicle driven by a drive motor to drive the front axle decoupling. Considering the ideal braking force distribution curve, ECE regulation off-line and rear axle braking force limit and other restrictions Factors to determine the boundary conditions of the front axle braking force; at the same time, in order to balance the contradictory requirements of maximum braking energy recovery and best braking safety, the fuzzy control method is used to determine the optimal front axle braking force, under the premise of ensuring braking safety , try to stimulate the regenerative braking potential of the motor, and then coordinate the electro-hydraulic braking force of the front axle; finally, based on the principle of priority compensation for the rear axle, the braking force is reasonably distributed to meet the total braking demand.
Description
technical field [0001] The invention relates to the technical field of braking energy recovery of pure electric vehicles, more precisely, the invention relates to a regenerative braking force distribution method of pure electric vehicles. Background technique [0002] Under the background of the increasing shortage of non-renewable resources in the world, the braking energy recovery technology of electric vehicles has been paid more and more attention. Using this technology can effectively improve the driving range of vehicles and improve the energy saving effect. Braking force distribution is an important part of it. The components directly affect the quality of the braking energy recovery technology. It is necessary to propose a braking force distribution method. Under the premise of satisfying the contradiction between the maximum braking energy recovery and the best braking safety, the Reasonable distribution of motor and hydraulic braking force. Therefore, aiming at th...
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IPC IPC(8): B60L7/18B60T8/172
CPCB60L7/18B60T8/172B60T2270/608
Inventor 初亮常城
Owner JILIN UNIV