Automobile brake energy regeneration control device and system

A technology of energy regeneration and automobile braking, which is applied in electric braking systems, electric vehicles, vehicle components, etc., can solve the problems that cannot meet the requirements of automobile braking energy recovery control and braking energy release control, and achieve improved braking energy Effects of recovery rate and regeneration rate, reduction of fuel consumption, and smooth running

Inactive Publication Date: 2008-12-31
SHANDONG UNIV OF TECH
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  • Abstract
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AI Technical Summary

Problems solved by technology

[0004] In the existing hydraulic energy storage type vehicle braking energy regeneration systems and methods, there is no hydraulic energy storage type that performs braking energy recovery cycle control and braking energy release cycle control according to the slope of the road and the downhil

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  • Automobile brake energy regeneration control device and system
  • Automobile brake energy regeneration control device and system
  • Automobile brake energy regeneration control device and system

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Embodiment Construction

[0043] Such as Figure 1-2 In the shown embodiment: the city bus that the automobile adopts the HFC6701K3Y chassis that Jianghuai Automobile Co., Ltd. produces is refitted, the total mass of the automobile (including energy recovery device) m=8600kg, the acceleration of gravity g=10m / s 2 , tire rolling resistance coefficient f = 0.015, air resistance coefficient C D =0.65, the windward area of ​​the vehicle A=5.8m 2 , the variable variable pump / motor 14 used is a variable variable motor of the A6V160EP22FS146 type electronically controlled proportional variable control mode. In the closed hydraulic system using the closed oil tank 20, the variable variable motor is used as a variable variable pump again. The proportional electromagnet 141 adopts 24V, 300 ~ 630mA control current variable control.

[0044] The electronic control unit 15 adopts a single-chip microcomputer, and its input terminal is connected with the brake pedal switch 1, the accelerator pedal switch 2, the roa...

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Abstract

The invention provides a vehicle brake energy regeneration control method and system; the system comprises a hydraulic energy accumulator, a variable pump/motor, an electromagnetic clutch, a brake pedal switch, an acceleration pedal switch, a gear switch, a road slope sensor, a speed sensor, a pressure sensor of the energy accumulator, a hydraulic control unit and an electric control unit; the system automatically identifies the acceleration or brake intention of a driver, automatically detects the running state of the vehicle and the road slope situation, calculates the control current I1 of the proportional electric magnet of the variable pump/motor on different downgrade road slopes or horizontal roads and at different speeds by adopting the formula (I), calculates the control current I2 of the proportional electric magnet of the variable pump/motor on different upgrade road slopes or horizontal roads and at different speeds by adopting the formula (II) and carries out brake energy releasing circulation control, so as to control the running stability of the vehicle and improve the recovery rate as well as the regeneration rate of the brake energy.

Description

technical field [0001] The invention relates to an automobile braking energy regeneration control method and system, belonging to the technical field of automobile energy saving. Background technique [0002] When the car is moving forward on a downhill road or a level road, if the speed is too high or the slope is too large, the car needs to be braked, and when the car is moving forward on an uphill road or a level road, it is necessary to step on the accelerator pedal to increase the power output of the engine. During the braking process of driving on a downhill road or a level road, the kinetic energy and potential energy of the car are converted into heat energy through the friction of the brakes and the friction between the tires and the ground and are wasted. At the same time, the wear of the brakes and tires is increased, reducing the In the process of accelerating on an uphill road or on a level road, the load on the engine needs to be increased, which will increase ...

Claims

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Application Information

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IPC IPC(8): B60L7/10
Inventor 曲金玉任传波高松刘大权张小东
Owner SHANDONG UNIV OF TECH
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