CHARGING CONTROL SYSTEM FOR CHARGING PILE AND CHARGING CONTROL METHOD

A charging control system for a charging pile includes a utility power supply, an inverter, and a charging pile. In a green power mode, the charging pile charges a device to be charged using power generated by a photovoltaic system, and adjusts a charging current based on a current at a grid-connected port of the inverter until a power at the grid-connected port reaches zero. In an economy mode, the charging pile purchases electricity from the utility power supply for supplementation when power generated by the photovoltaic system is insufficient, and performs charging using a preset charging current; and when power generated by the photovoltaic system is sufficient, adjusts the charging current based on the current at the grid-connected port until the power at the grid-connected port reaches zero. Problems that a charging pile relies on a utility power supply directly and fails to effectively use renewable energy are resolved.