Vehicle and braking energy recovery and regeneration device thereof

Abstract

The invention discloses a braking energy recovery and regeneration device of a vehicle. The braking energy recovery and regeneration device of the vehicle comprises a low-position liquid storage tank and a high-position liquid storage tank, wherein the low-position liquid storage tank and the high-position liquid storage tank are respectively communicated with two hydraulic fluid ports of a pump motor, and non-liquid-storage areas of the low-position liquid storage tank and the high-position liquid storage tank are communicated with each other, so that internal pressures of the low-position liquid storage tank and the high-position liquid storage tank are equal. The principal shaft of a pump motor is connected with an engine or a gearbox of the vehicle through a clutch, a switching valve is arranged between the pump motor and a high-position liquid level meter to control connecting and disconnecting between the pump motor and the high-position liquid level meter. The clutch and the switching valve are closed and disconnected to control switching between a working state and an off working state, wherein the working state comprises an energy recovery mode and an energy regeneration mode. Compared with the prior art, the braking energy recovery and regeneration device of the vehicle thoroughly solves the problem stabilities of the energy recovery and the regeneration function are bad due to a hydraulic accumulator through an energy conversion form between liquid medium gravitational potential energy and pump motor mechanical energy. On this basis, the invention further discloses the vehicle containing the braking energy recovery and regeneration device.

Description

technical field [0001] The invention relates to the technical field of hybrid power, in particular to a vehicle and a device for recovering and regenerating braking energy thereof. Background technique [0002] With the global vehicle population increasing year by year, the vehicle industry is facing increasing pressure on energy conservation and emission reduction. Various countries are also focusing on the research and development of green and environmentally friendly products, and together they will take the lead in future competition. Hybrid technology is currently one of the best energy-saving solutions recognized internationally. It aims to improve energy utilization, reduce fuel consumption and reduce harmful gas emissions through the joint action of different power sources and give full play to their respective advantages. [0003] In the prior art, the basic principle of the invention patent of "a system and method for providing hydraulic energy storage hybrid powe...

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Problems solved by technology

[0006] In order to solve the above technical problems, the core purpose of the present invention is to provide an energy recovery and regeneration device to solve the problem of unstable internal pressure of the high-pressure hydraulic accumulator in the prior art after long-term use, thereby ensuring vehicle energy recovery and Working stability of regenerative function

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