Charging system, method and device for controlling charging system, and electronic device

A method for controlling a charging system, the charging system comprising:

• a power management integrated circuit;
• a bidirectional voltage conversion circuit, the bidirectional voltage conversion circuit being configured to work in a working mode comprising at least a boost mode and a buck mode;
• a controller having a first input terminal;
• and
• a battery level detection circuit,
• an input terminal of the battery level detection circuit being connected to a battery,
• an output terminal of the battery level detection circuit being connected to the first input terminal of the controller, and
• the battery level detection circuit being configured to detect a voltage and a current of the battery and transmit the voltage and the current of the battery to the controller, and
• wherein the controller is configured to control the working mode of the bidirectional voltage conversion circuit and a working state of the power management integrated circuit according to the voltage and the current of the battery, and
• wherein the method comprises:
• determining a voltage and a current of a battery to be charged, and
• controlling the working mode of the bidirectional voltage conversion circuit and the working state of the power management integrated circuit according to the voltage and the current of the battery.

An electronic device comprising a charging system, wherein the charging system comprises:

• a power management integrated circuit;
• a bidirectional voltage conversion circuit, the bidirectional voltage conversion circuit being configured to work in a working mode comprising at least a boost mode and a buck mode;
• a controller having a first input terminal;
• and
• a battery level detection circuit,
• an input terminal of the battery level detection circuit being connected to a battery,
• an output terminal of the battery level detection circuit being connected to the first input terminal of the controller, and
• the battery level detection circuit being configured to detect a voltage and a current of the battery and transmit the voltage and the current of the battery to the controller, and
• wherein the controller is configured to control the working mode of the bidirectional voltage conversion circuit and a working state of the power management integrated circuit according to the voltage and the current of the battery.