High-power intelligent quick-charge electric source system for electric automobile and control method

Abstract

The invention discloses a high-power intelligent quick-charge electric source system for an electric automobile and a control method. The high-power intelligent quick-charge electric source system comprises a three-phase AC input electric network, a high-power parallel connection dephasing full-bridge main circuit, a positive negative pulse generation circuit, a control circuit and a battery load, wherein the high-power parallel connection dephasing full-bridge main circuit is formed by parallel connection of two or more sets of dephasing full-bridge inverters; the control circuit comprises two or more sets of first control circuits and a second control circuit; the first control circuits are in one-to-one correspondence to the dephasing full-bridge inverters, and each of the first control circuits comprises a voltage current detecting module, a fault protecting module, a first DSP digital control module and an MOSFET driving module; and the second control circuit comprises a second DSP digital control module, an IGBT driving module, an STM32 man-machine interface module and a battery status judging module. The high-power parallel connection dephasing full-bridge main circuit disclosed by the invention has the characteristics of being high in output power, high in charge efficiency, quick in charge rate and high in reliability.

Description

technical field [0001] The invention relates to the field of fast charging of electric vehicles, in particular to a high-power intelligent fast charging power supply system and a control method for electric vehicles. Background technique [0002] As a clean new energy vehicle, electric vehicles are receiving more and more attention and response. The state has introduced a series of policies and measures for new energy vehicles, such as exemption from car purchase tax, incentives for charging facilities construction, publicity of promotion, and procurement by party and government agencies, which has boosted the confidence of the auto industry in the development of new energy vehicles. According to statistics from the Ministry of Industry and Information Technology, in 2014 alone, more than 300 new energy and new models were launched in my country, with an annual production of 83,900 vehicles, a year-on-year increase of nearly 4 times. Among them, 27,200 vehicles were produced...

AI Technical Summary

Problems solved by technology

These charging methods, on the one hand, have a simple control circuit and are relatively easy to implement; on the other hand, the charging time is relatively long, and the charging method is too simple, and improper control will cause damage to the battery itself, and even affect the service life of the battery itself.

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