ELECTRONIC DEVICE, CHARGING CIRCUIT, CHARGING CONTROL METHOD, AND CHIP

An input end of the first voltage conversion circuit and an input end of the second voltage conversion circuit are coupled to a power supply end; an output end of the first voltage conversion circuit is configured to be coupled to a positive electrode of a first battery, a negative electrode of the first battery is coupled to a positive electrode of a second battery, and a negative electrode of the second battery is coupled to a ground; and an output end of the second voltage conversion circuit is configured to be coupled to the positive electrode of the second battery. A first voltage conversion ratio of the first voltage conversion circuit is different from a second voltage conversion ratio of the second voltage conversion circuit, and a working state of the first voltage conversion circuit and a working state of the second voltage conversion circuit overlaps.