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Power and Communication Interface of DC charging pile reader

Main component

Concept:

The power and communication interfaces of the DC charging pile card reader are an important part of the connection and communication between the card reader and external devices, they ensure that the card reader can receive the power supply and exchange data with other system components.

Function:

Power supply: Provide a stable power supply for the card reader to ensure its normal operation.

Data communication: Realize the data exchange between the card reader and the billing control unit, including user authentication, transaction data, etc.

Interface standardization: Ensure that the card reader can be compatible with the billing control unit produced by different manufacturers.

Working Principle:

Power interface: Supply voltage: DC charging pile reader usually requires 5V DC power supply. Power consumption: The average current consumption is about 54mA, and the peak current is less than 150mA. Power supply stability: The power supply interface needs to be able to withstand a certain voltage fluctuation, generally between 4.5V and 5.5V.

Communication interface: Interface type: Card readers typically provide an RS-232C communication interface, which is a serial communication protocol for communicating with the billing control unit. Communication rate: The data transfer rate of the RS-232 interface can be configured, and common rates include 9600bps, 38400bps, 57600bps, and 115200bps. Physical connection: RS-232 communication interfaces typically use 6-pin 2.54mm pitch in-line sockets that contain data input (RXD), data output (TXD), power ground (GND), and 5V power input (VCC). Communication protocol: The communication protocol must comply with the national grid DC charging pile communication protocol to ensure seamless docking with the billing motherboard.

Sum up

Through the above introduction, we can understand that the power and communication interface of the DC charging pile reader plays a key role in ensuring the normal operation of the card reader and effective communication with other system components.

DC CHARGING PIlE SERIES

DC charging pile is an efficient charging facility for electric vehicles, which uses direct current (DC) to directly charge the vehicle battery, significantly reducing the charging time. Compared with traditional AC charging piles, DC charging piles are able to provide higher power output and can usually charge an EV to 80% of its capacity in 30 minutes, providing users with a convenient charging experience.

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