Electric vehicle charging station and application method thereof

Abstract

The invention relates to an electric vehicle charging station and an application method thereof. The charging station a PLC (programmable logic controller) and a plurality of numbered charging modules connected to the PLC. The PLC is further connected with a man-machine interaction interface and a fee collecting identification read-write device. The single-chip micro-computer of each charging module is connected with a relay group through a photoelectric coupler group and then connected with a plurality of charging sockets, and each charging socket has a special number. When one relay is on, the charging socket corresponding to the relay is communicated with a power supply. The current and voltage sampling circuit output end connected to the output end of each relay is connected into the corresponding single-chip microcomputer. The application method includes: the battery of user is connected to one selected charging socket, the PLC allows the charging socket to be electrified temporality and calculates the fee needed for charging the battery, and charging can be performed after the user pays the fee. The PLC controls the charging process, power off and alarming are achieved during overcurrent or undervoltage, and the charging is stopped automatically when the charging of the battery is completed. The electric vehicle charging station has the advantages that the station is stable and reliable in operation and high in interference resistance, the user can complete fee paying and charging in a self-service manner, stations of different scales can be built, and the station is easy to expand.

Description

technical field [0001] The invention relates to electric vehicle charging technology, in particular to an electric vehicle charging station and a use method. Background technique [0002] The severe situation of global oil resources and environmental protection makes people prefer non-polluting and convenient electric energy. It is the general trend that electric vehicles replace fuel vehicles, and with the continuous advancement of battery technology and electric motor technology, electric vehicles have become an increasingly cheap, convenient and practical means of transportation, and are becoming increasingly popular. In order to ensure the normal use of electric vehicles, the problem of charging must be solved. Now there are many charging stations for electric vehicles on the streets, and in the future, charging stations will be the same as gas stations, spreading all over urban and rural areas. [0003] However, the existing electric vehicle charging system has poor a...

AI Technical Summary

Problems solved by technology

[0003] However, the existing electric vehicle charging system has poor anti-interference ability, high failure rate, and cannot be automatically controlled and managed

If there is a sudden power outage during the charging process, the charging device cannot automatically continue charging when the power supply is restored, so that the electric vehicle has not been charged with enough power and cannot be used when it is used, affecting the normal work and life of the electric vehicle owner.

In addition, the existing electric vehicle charging system uses programmable logic controllers at all levels, which is costly and prone to scrapping due to frequent failures, which further affects the promotion of electric vehicle charging systems

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