MOBILE DEVICE AND CHARGING APPARATUS
First Claim
1. A charging device comprising:
- a receptacle upon which a plurality of mobile devices that issue charge order instructions are placed, each of the plurality of the mobile devices includes a rechargeable battery, a receiver coil that receives AC power, a rectifier that rectifies the AC power into DC power, a plurality of capacitors disposed between the receiver coil and the rectifier, and a switch that selectably connects or disconnects the receiver coil one or more of the capacitors;
a transmitter coil that moves on a plane parallel to the receptacle and wirelessly transmits AC power to a selected mobile device of the plurality of mobile devices placed on the receptacle; and
a controller that determines a mobile charge order of the plurality of mobile devices based on capacitances of capacitors connected to respective receiver coils of the plurality of mobile devices, and controls a movement of the transmitter coil to a predetermined location in the receptacle on the basis of the mobile charge order so as to charge the rechargeable battery of the selected mobile device.
6 Assignments
0 Petitions
Accused Products
Abstract
When the charge level of a fully-charged rechargeable battery decreases due to quiescent power drain, in order to recharge it is necessary for the user to pick up and again place the mobile device in which the rechargeable battery is inserted onto a charging apparatus and issue instructions to start recharging. To address this issue, a charging controller applies control to disconnect a capacitor from a receiver coil with a switch in the case where the charge level of a rechargeable battery is equal to or greater than a given threshold value, and additionally applies control to connect the capacitor to the receiver coil with the switch in the case where the charge level of the rechargeable battery is less than the threshold value.
38 Citations
14 Claims
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1. A charging device comprising:
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a receptacle upon which a plurality of mobile devices that issue charge order instructions are placed, each of the plurality of the mobile devices includes a rechargeable battery, a receiver coil that receives AC power, a rectifier that rectifies the AC power into DC power, a plurality of capacitors disposed between the receiver coil and the rectifier, and a switch that selectably connects or disconnects the receiver coil one or more of the capacitors; a transmitter coil that moves on a plane parallel to the receptacle and wirelessly transmits AC power to a selected mobile device of the plurality of mobile devices placed on the receptacle; and a controller that determines a mobile charge order of the plurality of mobile devices based on capacitances of capacitors connected to respective receiver coils of the plurality of mobile devices, and controls a movement of the transmitter coil to a predetermined location in the receptacle on the basis of the mobile charge order so as to charge the rechargeable battery of the selected mobile device. - View Dependent Claims (2, 3, 4, 5)
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6. A method for charging a selected mobile device, comprising:
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detecting respective positions on a receptacle of a plurality of mobile devices that issue charge order instructions, each of said plurality of mobile devices includes a rechargeable battery, a receiver coil that receives AC power, a rectifier that rectifies the AC power into DC power, a plurality of capacitors disposed between the receiver coil and the rectifier, and a switch that selectably connects or disconnects the receiver coil one or more of the capacitors; comparing charge order instructions from the plurality of mobile devices and determining a selected mobile device with a lowest charge, said selected mobile device being one of the plurality of mobile devices; moving a transmitter coil to the selected mobile device; and charging the selected mobile device to a predetermined charge threshold. - View Dependent Claims (7, 8, 9, 10)
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11. A mobile device comprising:
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a rechargeable battery; a receiver coil that outputs AC power received from a charging apparatus that wirelessly charges the rechargeable battery; a rectifier that rectifies the AC power output by the receiver coil into DC power; a capacitor that is switchably connected between the receiver coil and the rectifier; a charger that charges the rechargeable battery with the DC power rectified by the rectifier, and measures the charge level of the rechargeable battery; a switch that selectably connects or disconnects the receiver coil and the capacitor; and a charging controller that controllably operates the switch to change a capacitance level of the mobile device by disconnecting the capacitor from the receiver coil when the charge level of the rechargeable battery is equal to or greater than a predetermined threshold value, and connects the capacitor to the receiver coil with the switch when the charge level of the rechargeable battery is less than the threshold value. - View Dependent Claims (12, 13, 14)
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Specification