A parallel vehicle hybrid control system and control method

Abstract

The invention provides a parallel vehicle hybrid control system and a control method. The control system includes a battery, a drive motor, a main clutch, a variable displacement pump, a first one-wayvalve, a second one-way valve, a first safety valve, a second safety valve, a first solenoid valve, a low-pressure accumulator, a high-pressure accumulator, a second solenoid valve, a third solenoidvalve, a fourth solenoid valve, a fifth solenoid valve, a motor, a second clutch, a coupler, a speed reducer, and a control system. The control method comprises a forward start control mode, a reversestart control mode, a forward braking energy recovery control mode and a reverse hydraulic energy regenerative braking control mode. As that control mode is closed, components of the hydraulic pow control system can be reduced and the weight of the whole vehicle can be reduced; The invention can effectively eliminate the starting impulse current, adjust the starting time, prolong the service lifeof the battery and increase the mileage of the vehicle; The forward and reverse braking energy can be recovered effectively, the energy utilization rate can be improved, and the energy waste of the vehicle during braking can be avoided effectively.

Description

Technical field [0001] The invention relates to a hydraulic control system, in particular to a parallel vehicle hybrid power control system and a control method. Background technique [0002] Currently, public transportation vehicles in operation will frequently start and brake due to various conditions. When starting, the inrush current generated by the drive motor will generally be several times larger than the rated current, which will seriously affect the motor, battery and other components. Life. In addition, during the braking process of a bus, the braking energy is generally converted into heat on the brake and lost in the form of heat energy, which not only wastes energy, but also causes system heating and component loss. [0003] At present, the energy storage components for braking energy recovery on hybrid vehicles mainly exceed capacitors, and their energy density is small and the price is relatively expensive. Compared with super capacitors, hydraulic accumulators ha...

AI Technical Summary

Problems solved by technology

[0004] The technical problem to be solved by the present invention is to provide a parallel vehicle hybrid power control system and control method, which mainly solves the problem of poor power performance of the whole vehicle when the existing electro-hydraulic hybrid vehicle is started, too high peak value of the starting current of the drive motor, and braking energy waste etc.

Images