Electric car driving system with hydraulic pump system, electric car and control method

Abstract

The invention discloses an electric car driving system with a hydraulic pump system, an electric car and a control method. The driving system comprises a power battery, a power supply distribution unit, a motor controller, a driving motor, an automatic gear box, an electric generator controller, a range extender system and the hydraulic pump system, wherein the range extender system is composed ofan engine, an automatic clutch and an electric generator. According to the embodiment, in the electric car driving system with the hydraulic pump system, the driving motor and an ATM system are adopted, the range extender system provides power for the whole car, and produces power output so as to provide required power for the hydraulic pump system. Due to the arrangement of the automatic clutch,control modes of the hydraulic pump system is added, the control modes comprise the pure dynamic drive mode, the parallel drive mode, the engine driven mode, the generator drive mode and the like, the system control flexibility is improved, and the economic performance of the electric car is improved.

Description

technical field [0001] The invention relates to the technical field of engine control, in particular to an electric vehicle drive system with a bodywork system, an electric vehicle and a control method. Background technique [0002] Existing electric vehicles with bodywork systems (hydraulic pumps) rely on power batteries to provide energy, which has the problem of short mileage. Mechanical coupling leads to inflexible system control. At the same time, when the bodywork system is running, the drive motor does not necessarily run in a high-efficiency range, resulting in low economic performance of electric vehicles. Contents of the invention [0003] The object of the present invention is to provide an electric vehicle drive system with a bodywork system, an electric vehicle and a control method, so as to improve the control flexibility of the system and the economic performance of the electric vehicle. [0004] To achieve the above object, the present invention provides t...

AI Technical Summary

Problems solved by technology

[0002] Existing electric vehicles with bodywork systems (hydraulic pumps) rely on power batteries to provide energy, which has the problem of short mileage. Mechanical coupling leads to inflexible system control. At the same time, when the bodywork system is running, the drive motor does not necessarily run in a high-efficiency range, resulting in low economic performance of electric vehicles.

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