Intelligent rapid active charging machine and charging method thereof

Abstract

The invention relates to an intelligent rapid active charging machine and a charging method thereof. The intelligent rapid active charging machine comprises an input power supply unit, an inversion output unit and a detection control unit, wherein the detection control unit comprises a microprocessor, an auxiliary power supply output circuit, an input overvoltage-undervoltage protection circuit and an output overcurrent-overvoltage protection circuit, and a data storing and processing unit is arranged in the microprocessor. According to the charging machine, an optimized charging manner and an optimized charging curve can be generated by virtue of comparison and analysis on data in the data storing and processing unit; and the sizes of charging voltage and charging current are actively controlled according to the charging manner and the charging curve, and the charging voltage, the charging current, the charging time, the charging electric quantity, the charging manner and the SOC electric quantity are uploaded to an upper computer and a finished vehicle communication system in real time. The intelligent rapid active charging machine has the beneficial effects that the rapid and balanced charging can be realized, the charging efficiency of a battery is improved, the charging time of the battery is shortened, and the service life of the battery is prolonged.

Description

technical field [0001] The invention relates to the field of new energy electric vehicle chargers, in particular to an intelligent fast active charger and a charging method thereof. Background technique [0002] With the rapid development of the automobile industry, the shortage of energy supply and environmental pollution caused by the widespread use of traditional fuel vehicles have become increasingly prominent. Energy conservation and emission reduction have become popular among the people. Countries have accelerated the pace of development of new energy vehicles, especially electric vehicles. Different from the refueling method of traditional internal combustion vehicles, the energy supply method of electric vehicles is to charge the on-board battery through the grid, and the charger, as an essential part of electric vehicle charging, is one of the indispensable subsystems of electric vehicles. [0003] Traditional lead-acid battery chargers, especially large-capacity a...

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Problems solved by technology

[0003] Traditional lead-acid battery chargers, especially large-capacity and high-power chargers, mainly use power-frequency thyristors or magnetic saturation methods, which have the advantages of large volume, heavy weight, large power consumption, low efficiency, low power factor, and single charging method. Disadvantages, and the lithium battery charger developed in recent years, the charging method needs to passively accept the BMS command for charging. Although the charging safety has been improved to a certain extent, due to the complex system of the BMS itself, the failure rate is high, and the calculation error of the SOC remaining power is relatively large, which is easy Cause undercharging and overcharging, or even no charging, so it is of great significance to develop an intelligent fast active charger to improve the relatively backward development of electric vehicles and their charging facilities in my country, which is the basis for the development and growth of the electric vehicle industry

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