Electric automobile charging cluster and automatic power distribution system thereof

Abstract

The invention belongs to the technical field of electric automobile charging, and particularly relates to an electric automobile charging cluster and an automatic power distribution system thereof. The electric automobile charging cluster comprises a cluster control system, an information transmission network, a power supply network, intelligent charging piles and the automatic power distributionsystem. The charging cluster is dynamically divided into a quick-charging area and a slow-charging area according to a working state of the intelligent charging piles, the charging power of the quick-charging area and the slow-charging area is deployed in real time according to a principle of guaranteeing a quick-charging requirement in advance, under the condition of the power of the slow-charging area not meeting the charging requirement, working orders of the intelligent charging piles of the slow-charging area are reasonably arranged, the power load of the slow-charging area is adjusted and optimized, the automatic distribution of the charging cluster power is realized, and the problem of low charging efficiency when the charging cluster power descends during power utilization peak hours is solved.

Description

technical field [0001] The invention belongs to the technical field of electric vehicle charging, and in particular relates to an electric vehicle charging cluster and an automatic power distribution system thereof. Background technique [0002] With the increasingly intensified contradictions between economic development, energy supply, and environmental pollution, energy conservation and consumption reduction and reduction of dependence on fossil fuels have become urgent problems to be solved for the sustainable economic development of countries all over the world. Electric vehicles have the advantages of fuel saving, environmental protection, and high efficiency. Scientists and industrial circles all over the world generally believe that electric vehicles are an important clean transportation tool in the 21st century. Electric vehicle charging stations and charging networks are important infrastructure for the large-scale and industrialized development of electric vehicle...

AI Technical Summary

Problems solved by technology

[0003] Usually there will be conflicts between the charging station and the residents’ electricity consumption. During the peak period of electricity consumption, the available load power of the charging station will decrease. When a large number of charging vehicles enter the charging station at the same time, the power distribution is often insufficient, especially at night. It is the peak period of residential electricity consumption, at this time the available load power of the charging station may be less than the rated power of the charging cluster

At present, there are two countermeasures. The first measure is to turn off some charging piles first, and then start working after the remaining power is available. This method often results in a waste of charging equipment resources.

The second measure is to reduce the power of all charging piles in the cluster to work proportionally. At this time, the utilization rate of the equipment has been improved. However, since all the equipment is working at reduced power, the charging time of the vehicle is prolonged and the charging efficiency is reduced. At this time, the charging station is full. There are still a large number of vehicles waiting to enter the charging station outside the station

Although the current smart charging piles can interact with the BMS system and adjust their own charging power to the optimum according to the charging needs of the charging vehicles, the charging cluster does not monitor and manage the work of the charging piles in real time, and cannot be based on the overall charging in the station. The demand situation dynamically adjusts the power output of the charging pile and balances the power consumption in the station

And in terms of charging strategy, the current power scheduling rules of the charging cluster follow the principle of first-come-first-served, scheduling according to the order of electric vehicles. When there are free charging piles, they will start working when there is a vehicle. Flexible allocation of charging time and charging power according to the overall vehicle charging needs of the charging cluster

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