A power supply system, applicable to an electronic device, wherein the electronic device comprises at least two cell groups, an external interface, and a load, each of the cell groups comprises at least one cell, and the at least one cell is coupled between two poles of the cell group;
- the power supply system comprises a control processor, a toggle switch circuit, and a buck switch circuit;
- the toggle switch circuit comprises a first output end, a second output end, and a plurality of input ends;
- the two poles of the cell group are each coupled to an input end of the toggle switch circuit;
- the first output end of the toggle switch circuit is coupled to an input end of the buck switch circuit, the second output end of the toggle switch circuit is coupled to an output end of the buck switch circuit, and the input end of the buck switch circuit is coupled to the external interface;
- the output end of the buck switch circuit is further coupled to a load, and the external interface is configured to connect a charger;
- wherein the control processor is configured to:
- when the control processor detects that charging is completed, configure, in sequence:
- the buck switch circuit to adjust a voltage outputted from the output end of the buck switch circuit to a voltage of a first cell group among the at least two cell groups;
- the toggle switch circuit such that the first cell group outputs a voltage to the second output end of the toggle switch circuit;
- and the toggle switch circuit to switch the connection status of the at least two cell groups to be parallelly-connected, so that the at least two cell groups are connected in parallel between the second output end of the toggle switch circuit and a grounding end and so that power is continuously supplied to the load throughout a time period from when the control processor detects that charging is completed to when the at least two cell groups are connected in parallel between the second output end of the toggle switch circuit and the grounding end;
- when the control processor detects that the external interface is connected to the charger, configure, in sequence:
- the buck switch circuit to adjust the voltage outputted by the output end of the buck switch circuit to the voltage of the first cell group;
- the toggle switch circuit to disconnect other cell groups of the at least two cell groups except the first cell group from the load;
- and subsequently the toggle switch circuit to switch the connection status of the at least two cell groups to the serially-connected state, wherein the at least two cell groups is connected in series between the first output end of the toggle switch circuit and the grounding end and so that power is continuously supplied to the load throughout a time period from when the control processor detects that the external interface is connected to the charger to when the at least two cell groups are connected in series between the first output end of the toggle switch circuit and the grounding end;
- when the control processor detects that the charger is disconnected from the external interface, configure, in sequence:
- the buck switch circuit to adjust the voltage outputted from the output end of the buck switch circuit to the voltage of the first cell group among the at least two cell groups;
- the toggle switch circuit such that the first cell group outputs the voltage to the second output end of the toggle switch circuit;
- and the toggle switch circuit is to switch the connection status of the at least two cell groups to be parallelly-connected, so that the at least two cell groups are connected in parallel between the second output end of the toggle switch circuit and the grounding end and so that power is continuously supplied to the load throughout a time period from when the control processor detects that the charger is disconnected from the external interface to when the at least two cells groups are connected in parallel between the second output end of the toggle switch circuit and the grounding end.