Introduction to the functions of electric vehicle charging pile controller

China [CN]

At present, with the rapid development of the economy, the widespread use of automobiles, and the aggravation of environmental pollution, the country has increased its support for the rapid development of new energy vehicles, which has led to the research and development of charging cables for charging piles, the basic measures for new energy vehicles, becoming increasingly important. The electric vehicle charging cable is a carrier that connects electric vehicles and charging piles, and its basic function is to transmit electrical energy.

However, with the development of charging technology, in order to better complete charging, communication is required between electric vehicles and charging piles, and automatic control is performed when necessary. Therefore, cable manufacturers will be equipped with a certain number of signal lines, control lines, power auxiliary lines, etc. to ensure that the entire charging process is accurately controlled and the operation is safe and correct.

During the entire charging process, the charging pile with the function of communicating with the BMS through the CAN network will determine the battery type, obtain the power battery system parameters, and the status parameters of the power battery before and during charging; it can determine whether the charging connector and charging cable are correctly connected. However, the charging pile is allowed to start the charging process only after the charging connector is correctly connected to the electric vehicle battery system; when an abnormal connection with the electric vehicle battery system is detected, charging is stopped immediately and an alarm message is issued.

All of the above operations can only be performed if the charging pile and the charging pile cable have communication and automatic control functions. Under the premise of ensuring the basic functions of the charging pile cable, the number of cores of the charging pile cable can be appropriately increased to meet technological innovation; the charging process places higher requirements on the charging cable. The charging cable not only needs to have the function of power transmission, but also needs to transmit the status and information of the vehicle and power battery to the charging pile for real-time interaction. Under necessary conditions, the charging action is controlled to complete the charging process safely and reliably.

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