Regenerative braking energy recovery system of serial hydraulic electric vehicle

Abstract

The invention relates to a regenerative braking energy recovery system of a serial hydraulic electric vehicle. The regenerative braking energy recovery system comprises a battery, a motor, a first variable displacement pump, a drive axle, a first fuel tank with a second variable displacement pump, a second fuel tank with a third variable displacement pump, an energy accumulator, a flywheel and a braking ECU (electronic control unit), wherein the battery is electrically connected with the motor, the motor is connected with the first variable displacement pump through a first clutch, the first variable displacement pump is connected with the second variable displacement pump through a pipeline and is also connected with the third variable displacement pump through a pipeline, and the energy accumulator is connected with the second variable displacement pump through a pipeline; and the second variable displacement pump is connected with the drive axle, and the drive axle is connected with the vehicle through a transmission; and the third variable displacement pump is connected with the flywheel through a second clutch. The regenerative braking energy recovery system has the beneficial effects that excessive energy produced in system braking can be stored, certain energy can be released when needed, the pressure stabilizing effect can be achieved for the whole vehicle, and energy recovery and reuse can be realized.

Description

technical field [0001] The invention relates to a regenerative braking energy recovery system for series hydraulic electric vehicles. Background technique [0002] At present, quite a lot of research has been done on the regenerative braking technology of electric vehicles abroad, and obvious progress has been made, and many products can be applied in real vehicles. In the regenerative braking system of gasoline-electric hybrid vehicles, batteries are often used abroad to recover braking energy. my country develops electric vehicles, electric vehicle regenerative braking systems, and proposes regenerative braking systems such as batteries, supercapacitors, flywheels, and hydraulic accumulators. Due to the existing domestic battery technology, it is difficult to use batteries or super capacitors as storage elements to recover braking energy. The series regenerative braking system CPS (Constant Pressure Source) is hydraulically driven by a constant pressure source. The flywh...

AI Technical Summary

Problems solved by technology

[0003] Aiming at the problems of high cost, difficulty in adapting to electric vehicles and narrow application range of the current flywheel system, the present invention proposes a series hydraulic electric vehicle regenerative braking energy recovery system with wide application range, low cost and no traditional mechanical drive

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