Automatic charging device and automatic charging method of electric vehicle by utilizing power line carrier communication

Abstract

The invention discloses an automatic charging device and an automatic charging method of an electric vehicle by utilizing power line carrier communication. The automatic charging device comprises a transformer, a distribution concentrator and a charging pile, wherein the transformer is connected with the distribution concentrator that is connected with the charging pile by a power line; and the charging pile is connected with the electric vehicle by a power line. The automatic charging control method of power line carrier communication of the electric vehicle adopts an OFDM technology to divide a channel into a plurality of orthogonal sub-channels from frequency domains, and subsequently modulates data to the sub-channel so as to transmit the data. The control method comprises the following steps of scrambling the data at a sending end and modulating the data on the sub-channels; transmitting the data to the power line by digit / analog conversion so as to transmit the data; and demodulating and decoding a digital signal which is obtained by carrying out the analog / digit conversion on an analogue signal at a receiving end, and then obtaining the data.

Description

technical field [0001] The invention relates to a charging device, in particular to an electric vehicle automatic charging device and method using power line carrier communication. Background technique [0002] At present, with the shortage of energy, rising oil prices, and increasingly serious urban environmental pollution, the development and utilization of new energy sources that can replace oil has been paid more and more attention. Electric vehicles that use electric energy as an energy source have become popular in people's daily life because of their advantages of environmental protection and convenience. As we all know, the battery of an electric vehicle needs to be charged in time to provide power for the vehicle to drive. In actual use, users often forget to charge in advance, or because the battery of the electric vehicle itself has a limited charging range, it will lead to half-way driving. It happens from time to time that an electric vehicle cannot continue to...

AI Technical Summary

Problems solved by technology

The establishment of charging stations and charging piles for community users, parking lots, large shopping malls, streets and other public vehicle-intensive areas is conducive to promoting the development of the electric vehicle industry. However, in the existing technology, the construction cost of charging stations is relatively high, and a large number of charging stations, The large amount of capital and human resource investment brought by the establishment of charging piles has hindered the large-scale construction of electric vehicle charging stations

Moreover, the existing charging stations still have problems such as troublesome management and unreasonable billing.

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