On-line calibration system for electric vehicle charging pile

Abstract

The invention discloses an on-line calibration system for an electric vehicle charging pile. The on-line calibration system comprises a cloud server, a positioning module, a charging pile management module and a charging pile calibration module; and after user order information is received, a user is positioned through Bluetooth, the charging pile used by the user is matched according to positioninformation, a cloud server sends management information to the management module, and the voltage and current states during charging are monitored in real time. A data request terminal receives the task request and then sends task information to all the modules, and data are distributed in a unified mode; a plurality of Bluetooth collecting devices are arranged near the charging pile, the straight-line distances between a target and the Bluetooth devices are calculated according to the message strength, and the position of the target is determined by collecting the multiple straight-line distances; matching is conducted in a position coincidence mode, and compared with modes such as code scanning for verification, more convenient and quicker effects are achieved; and after the charging task is completed, current and voltage information is collected for comparison, real-time monitoring is conducted to prevent abnormal charging information, and the whole process of the charging pile iscalibrated online.

Description

technical field [0001] The invention belongs to the technical field of online calibration systems, and in particular relates to an online calibration system for electric vehicle charging piles. Background technique [0002] Charging piles are the key interface for electric vehicle charging and electric energy measurement. The current routine on-site accuracy inspection of charging piles requires a lot of manpower and material resources. The average cost of each charging pile measurement and verification is about 200 yuan per year. There are tens of thousands of charging facilities in the local area. , the testing capacity of statutory testing agencies is dwarfed by comparison, and management is difficult, costly and inefficient. On-site calibration of charging piles uses a high-precision standard meter device connected in series to the verified charging pile on site, and compares the measurement values ​​of the standard meter with the charging pile at three working points to...

AI Technical Summary

Problems solved by technology

[0002] Charging piles are the key interface for electric vehicle charging and electric energy measurement. The current routine on-site accuracy inspection of charging piles requires a lot of manpower and material resources. The average cost of each charging pile measurement and verification is about 200 yuan per year. There are tens of thousands of charging facilities in the local area. , the testing capabilities of statutory testing agencies are dwarfed, and the management is difficult, costly and inefficient

On-site calibration of charging piles uses a high-precision standard meter device connected in series to the verified charging pile on site, and compares the measurement values ​​of the standard meter with the charging pile at three working points to calculate the measurement error. This method is time-consuming and labor-intensive. Need to invest a lot of technical personnel

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