Electrical transformation method suitable for single-pile power expansion and distribution of old charging station

Abstract

The invention discloses an electrical transformation method suitable for single-pile power expansion and distribution of an old charging station, and the method achieves the power expansion through transforming two or more than two single charging piles into a set of split charging piles. The core technical point is that modules of a plurality of single charging piles are controlled through a group of direct current contactors in an annular and star combination manner, so that the power distribution is more flexible. The internal structure of each single charging pile is transformed; a single pile control panel in a single charging pile, a power automatic distribution unit control panel and a PFC + DC / DC module are connected in series to a main control panel, so that real-time control of data information is realized; all the single charging pile modules are connected to a parallel power distribution cabinet through power cables; and the power is connected to the front side of a direct current contactor in front of a terminal gun line through a power cable after passing through an automatic power distribution unit. Two or more single charging piles are transformed into a set of split type charging piles, so that power capacity expansion is realized. The operation efficiency and the charging efficiency of the equipment are improved, and the client income is increased.

Description

technical field [0001] The invention belongs to the technical field of power electronics, and in particular relates to an electrical transformation scheme for single-pile power expansion and distribution in old charging stations. Background technique [0002] With the rapid development of my country's electric vehicle industry, the development and construction progress of charging piles has been greatly improved in recent years, and the replacement has been rapidly improved. As a result, most of the charging piles in many old stations in the charging pile market are the original single charging piles. There are two charging guns for each single pile. Because there is an island phenomenon when the two guns output at the same time, a short circuit causes the vehicle battery to recharge each other. Therefore, this type of single pile has no power distribution function, and the modules in the pile are output to the two charging guns equally. As a result, each gun can only use half...

AI Technical Summary

Problems solved by technology

[0002] With the rapid development of my country's electric vehicle industry, the development and construction progress of charging piles has been greatly improved in recent years, and the replacement has been rapidly improved. As a result, most of the charging piles in many old stations in the charging pile market are the original single charging piles. There are two charging guns for each single pile. Because there is an island phenomenon when the two guns output at the same time, a short circuit causes the vehicle battery to recharge each other. Therefore, this type of single pile has no power distribution function, and the modules in the pile are output to the two charging guns equally. As a result, each gun can only use half the number of modules, so that the maximum output power is limited by the number of modules

Images