Electric vehicle charging system

Abstract

An electric vehicle charging system includes a charging control circuit; a transformer switch circuit connected to the charging control circuit for switching the on-off state of itself under the control of the charging control circuit; a direct current transformer circuit, the first end of which is connected with the battery of the electric vehicle, the second end of which is connected with the first end of the transformer switch circuit, and the second end of the transformer switch circuit is connected with the power battery of the electric vehicle; A low-voltage power supply interface for connecting to an external low-voltage power supply, the low-voltage power supply interface being connected to a charge control circuit for supply power to the charge control circuit. Compared with the existing electric vehicle charging system, this system uses the electric vehicle own power battery and DC / DC circuit to charge the battery, without additional components and costs. At the same time, the charging gun can be removed after the DC / DC circuit works normally, so that the normal operation of the electric vehicle is not affected.

Description

technical field [0001] The invention relates to the technical field of electric vehicles, in particular to an electric vehicle charging system. Background technique [0002] With the increase of environmental pollution and the impact of energy crisis, the development of new energy vehicles has been paid more and more attention. Due to increasingly stringent national subsidy policies, pure electric drive has increasingly become the mainstream direction of market development. Like traditional vehicles, new energy vehicles need batteries to provide low-voltage power supply for vehicles during power-on and start-up. [0003] However, when the vehicle is stored for a long time, parked without power failure, and the power generation components are not working properly, the battery may be fed with power, resulting in the failure of the vehicle to start. When the existing pure electric vehicle and the plug-in battery are fed, the battery of other vehicles is still generally charge...

AI Technical Summary

Problems solved by technology

[0003] However, when the vehicle is stored for a long time, parked without a power failure, or the power generation components are not working properly, the battery may be fed power, resulting in the vehicle being unable to start

When the existing pure electric vehicles and plug-in batteries are fed, the batteries of other vehicles are still generally charged by fire or by special chargers. This charging method has a great impact on the performance of electric vehicles.

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