Embodiments of the present disclosure provide an equalization circuit, a device to be charged and a charging control method. The equalization circuit includes: a first converting unit, configured to receive a direct voltage output by a first battery cell and to convert the direct voltage output by the first battery cell into a first alternating voltage; a first resonant unit, configured to receive the first alternating voltage and to convert the first alternating voltage into a second alternating voltage in a resonant manner; a first capacitive coupling unit and a second converting unit, in which the first capacitive coupling unit is configured to couple the second alternating voltage to the second converting unit in a capacitive coupling manner, and the second converting unit is configured to convert the second alternating voltage into a first charging voltage for charging a second battery cell.