Electric vehicle hybrid power supply control method based on power tracking

Abstract

The invention belongs to the technical field of electric vehicle hybrid power supplies, and relates to how to control energy supply of an electric vehicle hybrid power supply, in particular to an electric vehicle hybrid power supply control method based on power tracking, solving the technical problems in the background technology. The technical scheme includes the steps: energy consumption resistors are additionally arranged at the two ends of a super capacitor, and a one-way second DC / DC converter is additionally arranged between a storage battery and a driving motor of the electric automobile. According to the electric vehicle hybrid power supply control method based on power tracking, energy output of the storage battery and the super capacitor can be controlled in a coordinated mode according to the change of the required power of the electric vehicle, and the super capacitor recovers energy during braking; reasonable distribution of power between a storage battery and a super capacitor in the hybrid power supply can be realized, and the response speed of a vehicle during high-power demand is increased; and the electric vehicle can run more stably and efficiently.

Description

technical field [0001] The invention belongs to the technical field of electric vehicle hybrid power supply, relates to how to control the energy supply of electric vehicle hybrid power supply, and in particular relates to a power tracking-based control method for electric vehicle hybrid power supply. Background technique [0002] Compared with traditional vehicles, electric vehicles are energy-saving and environmentally friendly, making them an inevitable trend in the development of the automotive industry. The energy supply of electric vehicles is mainly the on-board battery. However, due to the limited service life of on-board batteries, the cruising range of electric vehicles is short and the cost is too high, which seriously limits the pace of development of the electric vehicle industry. [0003] In recent years, supercapacitors have developed rapidly because of their ability to store a large amount of charge and fast charging and discharging. They can provide a high ...

AI Technical Summary

Problems solved by technology

[0005] Among them, when the driving motor of the electric vehicle combined with the battery and super capacitor is braking, the motor runs in the generator state, and the feedback energy generated will cause the battery to be subjected to a large current impact, which will affect the service life of the battery. In order to reasonably control the battery and super capacitor The power output of capacitors makes electric vehicles run more efficiently. How to reasonably control the energy supply of batteries and supercapacitors has become the main problem in the control of composite power systems.

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