Multifunctional integral electric automobile vehicle-mounted charging machine

Abstract

The invention provides a multifunctional integral electric automobile vehicle-mounted charging machine, which comprises a switch, a front end filtering module, a first rectifying module, a power factor correcting module, a first filtering module, an inversion module, a transformer, a second rectifying module and a second filtering module in sequential connection, wherein the transformer at least comprises one primary edge winding coil, one first secondary edge winding coil and one second secondary edge winding coil, the second rectifying module is connected with the second secondary edge winding coil, the second filtering module is connected with a storage battery, the charging machine also comprises a rectifying inversion module and a third filtering module, wherein the rectifying inversion module and the third filtering module are sequentially connected behind the first secondary edge winding coil, and the third filtering module is connected with a power battery. The multifunctional integral electric automobile vehicle-mounted charging machine has the advantages that the functions of the vehicle-mounted charging machine are expanded, the two functions of a vehicle-mounted alternating current and direct current charging machine and a direct current converter are realized, the cost of the vehicle-mounted charging machine is reduced, the weight and the size are reduced, meanwhile, the electric isolation is realized, and in addition, the energy conversion efficiency is high.

Description

technical field [0001] The invention belongs to the technical field of on-board charging of electric vehicles, and relates to a charger for electric vehicles. Background technique [0002] Environmental and energy issues are becoming more and more prominent in today's world. Electric vehicles have become a hot spot in the research and development of the automobile industry. However, the marketization of electric vehicles is still hindered by some key technologies. Among them, one of the more prominent technologies is the charging technology of electric vehicles. [0003] Electric vehicle chargers are an important part of electric vehicles. At present, electric vehicle chargers can be divided into off-board chargers and on-board chargers. For electric vehicles, the role of the traditional on-board charger is to charge the high-voltage power battery with the alternating current of the public grid. The traditional on-board charger includes the following parts: electromagneti...

AI Technical Summary

Problems solved by technology

The vehicle-mounted DC converter (DCDC) is used for high-voltage power batteries to charge low-voltage batteries. The functions of the DC-DC converter and the DC-DC conversion unit in the vehicle charger are similar, but the two are generally separated, that is, for The charging of the power battery by the public grid and the charging of the low-voltage battery by the power battery include two DCDC devices in principle, so the cost of the on-board charger is high, the volume is large and the function is single

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