Charge control method and device, and electronic device

A charge control device, applied in an electronic device, wherein the electronic device comprises a charging interface, a charging circuit and a battery coupled in series, the charging circuit comprises a first switch element and a second switch element which can be controlled to make the same charging circuit able to charge the battery in a high voltage charging mode but also able to charge the battery in a low voltage charging mode by only controlling the first switch element and the second switch element, the charging interface comprises a power line and a data line, the power line is configured to charge the electronic device, and the data line is configured to perform communication between the electronic device and a charging device, and the charge control device comprises:

• a determining component, comprising a receiver configured to receive indication information sent by the charging device via the data line in response to that the charging device is coupled with the charging interface, and a determining part configured to determine a charging mode supported by the charging device as the high voltage charging mode or the low voltage charging mode according to the indication information received by the receiver in which the indication information is configured to indicate the charging mode supported by the charging device, and an input voltage of the high voltage charging mode is greater than an input voltage of the low voltage charging mode
• a controller, configured to obtain, via the power line, a power source from the power adapter, and control the charging circuit according to the power source and the charging mode supported by the charging device and determined by the determining component, such that the charging circuit charges the battery in the charging mode supported by the charging device,
• wherein the controller is further configured to:
• if the charging mode supported by the charging device is the low voltage charging mode, control the first switch element to switch on, and control the second switch element to switch off, such that the charging circuit is in a bypass mode;
• and
• if the charging mode supported by the charging device is the high voltage charging mode, control the first switch element and the second switch element to switch on alternately.

An electronic device, comprising:

• a charging interface;
• a charging circuit;
• a battery coupled in series;
• and
• a charge control device,
• wherein the charging circuit comprises a first switch element and a second switch element which can be controlled to make the same charging circuit able to charge the battery in a high voltage charging mode but also able to charge the battery in a low voltage charging mode by only controlling the first switch element and the second switch element, the charging interface comprises a power line and a data line, the power line is configured to charge the electronic device, and the data line is configured to perform communication between the electronic device and a charging device, and
• the charge control device comprises:
• a determining component, comprising a receiver configured to receive indication information sent by the charging device via the data line in response to that the charging device is coupled with the charging interface, and a determining part configured to determine a charging mode supported by the charging device as the high voltage charging mode or the low voltage charging mode according to the indication information received by the receiver in which the indication information is configured to indicate the charging mode supported by the charging device, and an input voltage of the high voltage charging mode is greater than an input voltage of the low voltage charging mode;
• and
• a controller, configured to obtain, via the power line, a power source from the power adapter, and control the charging circuit according to the power source and the charging mode supported by the charging device and determined by the determining component, such that the charging circuit charges the battery in the charging mode supported by the charging device,
• wherein the controller is further configured to:
• if the charging mode supported by the charging device is the low voltage charging mode, control the first switch element to switch on, and control the second switch element to switch off, such that the charging circuit is in a bypass mode;
• and
• if the charging mode supported by the charging device is the high voltage charging mode, control the first switch element and the second switch element to switch on alternately.