A time-sharing power supply for electric vehicle charging and its monitoring system

Abstract

The invention discloses a time-sharing charging power supply and a monitoring system for charging electric vehicles, comprising at least one time-sharing charging power supply (5), at least one charging pile (6), a control terminal module (4), a data Acquisition module (3), monitoring server (2), electricity meter and upper computer (1), each described time-sharing charging power supply (5) is connected with at least one charging pile (6); The charging pile of the time-sharing charging power supply is time-shared for charging, and at the same time, according to the load conditions of each phase power supply, a certain phase of the power supply connected to the power supply is reasonably adjusted to achieve a balanced load, so that the time-sharing charging power supply for charging can provide more. The load of the charging pile.

Description

technical field [0001] The invention relates to the technical field of electric vehicle charging, in particular to a time-sharing power supply for charging electric vehicles and a monitoring system thereof. Background technique [0002] In recent years, with the rapid development of my country's economy, the logistics industry has also developed rapidly; at the same time, people's lives have gradually become richer, so it has become easier to buy cars, which has led to more and more cars in big cities , and the exhaust gas produced by the burning of petroleum products by fuel vehicles is also increasing, which leads to more and more serious air pollution. For this reason, the people hope to provide a kind of power source of replacing petroleum fuel, reduce automobile exhaust, thereby reduce the pollution to air. [0003] It is against the background of this mission that new energy vehicles appear, including hybrid new energy vehicles and pure electric vehicles. Since pure el...

AI Technical Summary

Problems solved by technology

But if there are 30 or more charging piles to be installed, considering that all 30 charging piles need to be charged at the same time, a power supply of 7×30=210kVA is required, which becomes impossible due to the limitation of power supply capacity

[0008] In addition to the limitation of AC power capacity, there is also the problem of unbalanced three-phase current

Severe current imbalance will greatly reduce the utilization of the transformer, because any phase current exceeding the limit will cause the circuit breaker to trip

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