Matrix-type flexible charging pile and charging method capable of dynamically allocating power

Abstract

The invention discloses a matrix-type flexible charging pile, and a charging method capable of dynamically allocating power. The method comprises the following steps that S1) each charging terminal is connected to a corresponding electric vehicle; S2) the charging terminal receives a charging power demand of the electric vehicle, and compares the charging power demand with the total module power of a fixed power region corresponding to the charging terminal; S3) if the charging power demand exceeds the total module power of the fixed power region, the charging terminal calculates the number of additional charging modules allocated to the current section of a direct-current bus, and delivers the number of charging modules to a matrix controller; and S4) the matrix controller allocates, according to the required number of charging modules, the required number of charging modules in a dynamic power region to a corresponding direct-current bus, and at the same time, switches a module communication line to a corresponding communication bus. The charging method capable of dynamically allocating power can satisfy charging demands of electric vehicles of different energy storage capacities and different charging rates, and improves the conversion efficiency and the utilization rate of a charging device.

Description

technical field [0001] The invention relates to the technical field of charging, in particular to a matrix type flexible charging pile and a charging method for dynamically distributing power. Background technique [0002] At present, the energy storage battery capacity and charging rate of various electric vehicles are different, and the output power requirements of the charger are quite different. In order to meet the charging needs of various electric vehicles in the society, the output power of the charger is designed to be very large. , when charging an electric vehicle with a small energy storage capacity, the charging capacity will be wasted, and the utilization rate of the charger will be low; if the output power of the charger is designed to be small, although the utilization rate of the charger can be improved, However, when charging an electric vehicle with a larger energy storage capacity, the charging time is prolonged, which brings inconvenience to the owner. ...

AI Technical Summary

Problems solved by technology

All the charging modules of the existing chargers are controlled centrally and correspond to the charger terminals one by one. Although the output power can be dynamically adjusted according to the demand value of the electric vehicle, it cannot solve the problem of low utilization rate of the charging equipment when the demand power of the electric vehicle is too low and the The contradiction of insufficient charging capacity when the demand power is too high

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