Electric power direct current metering system

Abstract

The invention relates to the technical field of electric quantity metering of an electric power system, in particular to an electric power direct current metering system. The system comprises a main control board, an integrated board and a charging gun, wherein an MCU, an onboard metering module connected with corresponding pins of the MCU and a storage module are integrated on the main control board; the main control board is used for collecting data of the integrated board and controlling input and output of current of the integrated board; the onboard metering module is used for collecting direct-current voltage and current, entering and exiting a charging gun, of the integrated board; and the storage module is used for storing electric quantity data. The system comprises the following working steps that S1, a hardware system is built according to the components mentioned above, and voltage and current are calibrated; S2, the MCU reads data collected by the onboard metering module and calculates electric quantity data; and S3, the MCU stores the electric quantity data to the storage module. The electric power direct current metering system has the beneficial effects that a metering chip is integrated into a main control circuit of a charging pile; and compared with the prior art that an electric energy meter is adopted to meter an electric quantity, the size of the charging pile is reduced, production cost is reduced, and production and detection time is shortened.

Description

technical field [0001] The invention relates to the technical field of electric power metering, in particular to an electric direct current metering system. Background technique [0002] At present, the metering scheme used on the DC charging piles on the market integrates a DC electric energy meter into the system. The DC electric energy meter takes up a relatively large space, high power consumption, and high cost; and now the DC charging pile with low power is designed on the market. For household use, the space requirements next to the parking space are very strict, and a power DC metering solution is urgently needed to solve the space problem. Contents of the invention [0003] In order to solve the problem of increased space occupied by the DC energy meter in the existing metering scheme, the present invention provides a DC metering system for electric power, and the specific scheme is as follows: [0004] The main control board integrates the MCU and the on-board m...

AI Technical Summary

Problems solved by technology

[0003] In order to solve the problem of increased space occupied by the DC energy meter in the existing metering scheme, the present invention provides a DC metering system for electric power, and the specific scheme is as follows:

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