Composite power energy management prediction control system of pure-electric vehicle

Abstract

The invention discloses a composite power energy management prediction control system of a pure-electric vehicle. The system comprises a motor, a power storage battery and a super capacitor, wherein the power storage battery and the super capacitor are connected with a motor drive control device through a bidirectional DC-DC (direct current) converter respectively; the motor drive control device is connected with the motor; and the system also comprises a microprocessor control system and a vehicular navigation system, a switch pedal potentiometer, a brake pedal potentiometer, a motor detection unit, a power storage battery energy management system and a super capacitor energy management system connected with the microprocessor control system. The system disclosed by the invention can make full use of energy resources, improve energy recovery, increase the once-charge travel distance of the electric vehicle, protect the storage battery, prolong the service life of the storage battery and enhance the power performance of the whole electric vehicle.

Description

technical field [0001] The invention belongs to the technical field of driving and regenerative braking control of pure electric vehicles, and in particular relates to a predictive control system for energy management of a composite power supply of pure electric vehicles. Background technique [0002] With the increasingly serious energy crisis and environmental pollution, electric vehicles have been highly valued by the industry and strongly supported by government departments due to their advantages of energy saving, environmental protection, and high energy conversion efficiency. At present, an important factor restricting the development of electric vehicles is their short driving range. How to improve the energy utilization efficiency in the driving process and the braking energy recovery efficiency is of great significance. [0003] Most of the current electric vehicles use a single energy structure. During the driving process of electric vehicles, frequent acceleratio...

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Problems solved by technology

[0004] The purpose of the present invention is to provide a pure electric vehicle composite power supply energy management predictive control system, which solves the problems in the prior art that the composite power supply energy management control is not perfect, the energy utilization efficiency and the braking energy recovery efficiency are low, and the charging efficiency of the electric vehicle is improved. The mileage can make full use of energy, increase energy recovery, protect the battery, prolong the service life of the battery, and improve the power performance of the electric vehicle

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