A universal charging station charging metering device and its metering method

Abstract

The invention discloses a universal charging station charge metering device, which comprises a charging station discharge current monitoring module, a charging station discharge voltage monitoring module, a charging station discharge power monitoring module, a storage battery charging current monitoring module, a storage battery charging voltage monitoring module, a storage battery charging power monitoring module, a comparison module, an error correction module and a metering module, wherein the comparison module is in communication connection with the charging station discharge current monitoring module, the charging station discharge voltage monitoring module, the charging station discharge power monitoring module, the storage battery charging current monitoring module, the storage battery charging voltage monitoring module and the storage battery charging power monitoring module, and is used for comparing data collected at one end of a charging station and data collected at the end of a storage battery; the error correction module is in communication connection with the comparison module and is used for carrying out error correction on the comparison result; and the metering module is in communication connection with the error correction module and is used for metering charge quantity. The charge metering device and the metering method thereof can improve deficiencies of the existing technology, and improve charging station charge metering accuracy.

Description

technical field [0001] The invention relates to the technical field of intelligent charging stations, in particular to a general-purpose charging metering device for charging stations and a metering method thereof. Background technique [0002] With the development of new energy technologies, sales of electric vehicles and plug-in hybrid vehicles are increasing year by year. The accompanying charging stations have also started construction across the country at a rapid speed. When charging new energy vehicles, the measurement of electricity is a key step, which is directly related to the issue of charging fees. The existing charging metering method is to directly calculate the charging quantity by collecting charging data. This method has obvious disadvantages: when the charging current or voltage in the charging process has interference fluctuations or the signal acquisition process has interference fluctuations, it will cause damage to the charging data. The measurement ...

AI Technical Summary

Problems solved by technology

The existing charging metering method is to directly calculate the charging power by collecting charging data. This method has obvious disadvantages: when the charging current or voltage in the charging process has interference fluctuations or the signal acquisition process has interference fluctuations, it will cause damage to the charging data. The measurement results have direct interference, resulting in a large deviation between the measured power and the actual charging power. This deviation can sometimes reach 1% or even greater, so that even if a high-standard watt-hour meter is used, the charging measurement accuracy cannot be improved.

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