Patent ID: 8436580

Claim:
A battery control circuit comprising: an input terminal to receive control signals; first and second output terminals to output power; first and second diodes; an electronic switch comprising a first terminal connected to the input terminal, a second terminal, and a third terminal; a first battery comprising a positive terminal connected to the first output terminal and a cathode of the first diode, and a negative terminal connected to the second terminal of the electronic switch and a cathode of the second diode; and a second battery comprising a positive terminal connected to the third terminal of the electronic switch and an anode of the first diode, and a negative terminal connected to the second output terminal and an anode of the second diode; wherein in response to the input terminal receiving a first control signal, the electronic switch is turned on, the first and second diodes are turned off, and the first and second batteries are connected in series; and wherein in response to the input terminal receiving a second control signal, the electronic switch is turned off, the first and second diodes are turned on, and the first and second batteries are connected in parallel.