Charging method of direct-current charging pile

Abstract

The invention relates to a charging method of a direct-current charging pile. The charging method comprises the steps as follows: user information display is read; a user is prompted to select a corresponding charging mode; card swiping information and account balance information are judged; the charging pile carries out self-inspection; if charging pile equipment is abnormal or broken down, the charging pile sends out a fault alarm signal, and is powered off; if the self-inspection result is abnormal, the charging pile is verified in the next step; if the charging pile is qualified through verification, an electric vehicle is charged; in the charging process, if the abnormal conditions such as electric leakage, overload or surge are generated, the charging pile immediately stops charging, and sends out the fault alarm signal; after charging is finished, automatic settlement is finished and the corresponding amount is deducted from an integrated circuit (IC) card according to the charging amount or the charging capacity; and a corresponding bill is printed. According to the charging method of the direct-current charging pile, intelligent charging of the charging pile is realized; the safety and the stability of the working state of the charging pile are ensured; the charging time of the electric vehicle is shortened; and meanwhile, the storage battery of the electric vehicle can be prevented from being damaged.

Description

technical field [0001] The invention relates to a charging pile, in particular to a charging method for a DC charging pile. Background technique [0002] The vigorous development and use of electric vehicles will become a future trend, and an important reason hindering its promotion and application is the construction of charging piles. Another reason is the charging time of electric vehicles. There are two types of charging piles, one is AC charging piles and the other is DC charging piles. The AC charging pile outputs 220V AC to charge the battery through the on-board charger. The DC charging pile can output DC400V high current to charge the battery directly. The charging time of DC charging piles is much shorter than that of AC charging piles. Therefore, DC charging piles are welcomed by many customers. Due to the high voltage and high current output of the DC charging pile currently used, the device that controls the main circuit consumes a lot, and the control cont...

AI Technical Summary

Problems solved by technology

Due to the high voltage and high current output of the DC charging pile currently used, the device that controls the main circuit consumes a lot, and the control contacts of the main circuit often appear to be sintered. In an emergency or after the charging is completed, it cannot be disconnected. The condition of the main circuit, which will damage the battery of the electric vehicle and present a dangerous