Electric vehicle charging pile with active filtering function, card reader, charging pile controller, electric meter, contactor, inverter module and charging nozzle. The charging pile controller includes a charging pile control unit and an inverter module controller. Charging The pile control unit connects to the electric meter, the electric meter contactor connects to the charging nozzle, the inverter module controller is connected between the contactor and the charging nozzle, the electric meter also connects the phase line and neutral line, the charging pile control unit electric meter and The card reader implements charging pile billing, and the inverter module controller controls the inverter module to achieve unit power factor and low harmonic operation of the electric vehicle charging pile. The inverter module controller uses double-zero proportional resonance control to achieve high-precision harmonic current control. Electric vehicle charging piles have harmonic suppression and reactive power compensation functions, eliminating the need for external active power filters, and the compensation point is located at the back end of the meter, reducing meter billing errors caused by harmonic currents.
Multi-gun automatic identification and error correction system, technology and charging piles for electric vehicle charging piles. The signal collection module collects the charging gun number, user information, and order information selected by the user; the information distribution and processing module processes the received information to obtain classified information; the automatic identification and error correction module processes the classified information and creates a classified information table; automatic identification The error correction module verifies whether the charging gun number of the response signal is the same as the charging gun number selected by the user; if they are the same, the charging gun number is set to the locked state; if they are not equal, it automatically adjusts and displays the actual continuous charging. Gun number, configure the actual continuous charging gun number into a locked state. It realizes the control of placing a multi-gun charging gun everywhere and plugging it in and out at will, effectively solving the problems of users returning the charging gun to the wrong location, selecting the wrong gun, being unable to charge, deducting the wrong fee, being unable to stop charging, and being unable to leave.
Covered information management electric vehicle charging pile, charging host, charging controller that communicates continuously with the charging host, total power measurement unit, multiple power measurement units that communicate with the charging host and the charging controller, and multiple power measurement units that communicate continuously with the charging host and the charging controller. The characteristic of the multiple charging units corresponding to the metering unit is that the charging controller obtains a continuous signal and charging settings when one or more of the multiple charging units connect to the same number of charging interfaces of one or more charged devices. information, and connects the electricity metering unit based on the obtained charging equipment information, so that the charging unit charges the charged device. This charging pile can improve the efficiency of a single charging pile, save installation costs, and reduce installation site requirements.