Parallel control system for recovering brake energy of electric bus and control method thereof
A braking energy recovery, electric bus technology, applied in electric braking systems, electric vehicles, hydraulic braking transmissions, etc., can solve problems such as unsatisfactory braking force distribution requirements, and achieve the effect of maintaining consistency
Inactive Publication Date: 2014-04-02
TSINGHUA UNIV
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[0005] figure 2 The braking force distribution curves of the above two parallel control strategies are given. It can be seen from the figure that the braking force distribution curves of the two control strategies are located above the I curve, which is not ideal for the braking force distribution requirements
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[0018] The invention proposes an electric bus braking energy recovery parallel control system and a control method thereof. Describe below in conjunction with accompanying drawing.
[0019] Figure 4 Shown is the schematic diagram of the electric bus parallel brake control system. In the figure, the parallel control system consists of two parts: a mechanical brake system and a motor brake system; the mechanical brake system includes front wheel brakes and rear wheel brakes Two parts, the front wheel brake is that the front wheel brake air storage tank 2 is connected with the brake foot control valve 4 through the first front wheel brake pipeline 3, and the brake foot control valve 4 is connected through the second front wheel brake pipeline 7 is connected with the front brake air chamber 8; the rear wheel brake is that the rear brake air storage tank 1 is respectively connected with the brake foot control valve 4 and the relay valve 17 through the rear brake first pipeline 19...
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The invention discloses a parallel control system for recovering brake energy of an electric bus and a control method thereof, which belong to the field of electric bus brake energy recovery. The parallel control system consists of a mechanical brake system and a motor brake system, wherein the mechanical brake system comprises a front wheel brake and a rear wheel brake, the front wheel brake is a front wheel brake gas storage tank and is connected with a brake pedal control valve through a front wheel brake pipe, and a rear brake combination valve is connected with a relay valve through a rear brake pipe; and the motor brake system is controlled by a driving motor controller. The parallel control system for the electric bus is an improved asynchronous parallel brake control strategy, the front section of the whole stroke of a brake pedal is a pure motor driven stroke, and the rear section is a stroke combining pure motor brake and front and rear mechanical brake; and thus, a same distribution curve of front and rear brake forces as that of the original base model is obtained, and a same brake feeling is ensured in the whole SOC (System on Chip) range of a power battery or a super capacitor.
Description
technical field [0001] The invention belongs to the scope of electric vehicle braking energy recovery, in particular to an electric bus braking energy recovery parallel control system and a control method thereof. Background technique [0002] Braking energy recovery is a huge advantage of electric vehicles, which is of great significance for improving the economy of electric buses and improving energy utilization. The braking energy recovery control strategy of electric buses is one of the important factors affecting the braking energy recovery effect. At present, the braking energy recovery control strategy mainly includes two types: series control and parallel control. The series control strategy is a closed-loop control system that requires the use of an electronic braking system to achieve dynamic adjustment of the mechanical braking force of the front and rear axles, thereby providing more opportunities for motor braking and theoretically achieving the highest braking...
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IPC IPC(8): B60L7/26B60T11/10
Inventor 仇斌陈全世朱妮江发潮朱家琏
Owner TSINGHUA UNIV