Charging System, Electronic Apparatus, Charge Control Method, and Program

An electronic apparatus comprising:

• a power receiving coil that can be coupled to a power transmitting coil of a power transmitting unit by electromagnetic induction,
• charging section charging a secondary battery by using a current induced in the power receiving coil,
• charge state determining section monitoring a charge state of the secondary battery to determine whether the secondary battery is in a state that charging of the secondary battery is required to be stopped,
• command transmitting section stopping the charging section from performing an operation of charging the secondary battery when it is determined by the charge state determining section that the secondary battery is in a state that charging of the secondary battery is required to be stopped and transmitting to the power transmitting unit a command for making an instruction for stopping electric power transmission,
• recharge determining section determining, while charging of the secondary battery is being stopped, whether the secondary battery is in a state requiring recharging, and
• coupling releasing section temporarily releasing coupling of the power receiving coil and the power transmitting coil by electromagnetic induction when it is determined by the recharge determining section that the secondary battery is in the state requiring recharging.

A charge control method comprising:

• a charging step of charging a secondary battery by using a current induced in a power receiving coil;
• a charge state determining step of monitoring a charge state of the secondary battery to determine whether the secondary battery is in a state that charging of the secondary battery is required to be stopped;
• a command transmitting step of stopping the charging step from performing an operation of charging the secondary battery when it is determined in the charge state determining step that the secondary battery is in a state that charging of the secondary battery is required to be stopped and transmitting a command making an instruction for stopping a power transmitting unit from transmitting electric power;
• a recharge determining step of determining whether the secondary battery is in a state requiring recharging while charging of the secondary battery is being stopped;
• and
• a coupling releasing step of temporarily releasing coupling of the power receiving coil and the power transmitting coil by electromagnetic induction when it is determined in the recharge determining step that the secondary battery is in the state of requiring recharging.

A non-transitory computer-readable storage medium having a program stored thereon that is executable by a computer in a power receiving unit having a power receiving coil that can be coupled to a power transmitting coil of a power transmitting unit by electromagnetic induction, the program causing the computer to perform functions comprising:

• a charging section charging a secondary battery by using a current induced in the power receiving coil,
• a charge state determining section monitoring a charge state of the secondary battery to determine whether the secondary battery is in a state that charging of the secondary battery is required to be stopped,
• a command transmitting section stopping the charging section from performing an operation of charging the secondary battery when it is determined by the charge state determining section that the secondary battery is in a state that charging of the secondary battery is required to be stopped and transmitting to the power transmitting unit a command for making an instruction for stopping electric power transmission,
• a recharge determining section determining whether the secondary battery is in a state requiring recharging while charging of the secondary battery is being stopped, and
• a coupling releasing section temporarily releasing coupling of the power receiving coil and the power transmitting coil by electromagnetic induction when it is determined by the recharge determining section that the secondary battery is in the state requiring recharging.