Contactless battery charger, electronic device, battery pack, and contactless charging system
First Claim
1. A contactless charger for charging, in a contactless manner, an electronic device using a secondary battery as a power source, the charger comprising:
- a transceiving section configured to receives from the electronic device a full charge command indicating completion of recharging,wherein the charger shifts,upon receipt of the full charge command, to a charge stop state in which charging of the electronic device is not performed,wherein the transceiving section is further configured to intermittently transmit, in the charge stop state, a load check signal for checking whether or not the electronic device is placed on the contactless charger in a rechargeable manner,wherein the transceiving section is further configured to intermittently transmit, in the charge stop state, a charge restart check command for checking whether or not the electronic device requires recharging,wherein the transceiving section is capable of transmitting the load check signal separately from the charge restart check command, andwherein time intervals at which the charge restart check command is transmitted are larger than time intervals at which the load check signal is transmitted.
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Accused Products
Abstract
A contactless charging system is made up of an electronic device and a contactless charger 200 that recharges the electronic device in a contactless manner. The electronic device transmits a full charge command indicating completion of charge. Upon receipt of the full charge command, the contactless charger shifts to a charge stop state in which charge of the electronic device is not performed. In the charge stop state, the contactless charger generates a load check signal for checking whether or not the electronic device is placed in the contactless charger in a rechargeable state, and transmits the signal. Further, the contactless charger also generates a charge restart check command for checking whether or not the electronic device requests recharge in a charge stop state, and transmits the command.
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Citations
12 Claims
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1. A contactless charger for charging, in a contactless manner, an electronic device using a secondary battery as a power source, the charger comprising:
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a transceiving section configured to receives from the electronic device a full charge command indicating completion of recharging, wherein the charger shifts, upon receipt of the full charge command, to a charge stop state in which charging of the electronic device is not performed, wherein the transceiving section is further configured to intermittently transmit, in the charge stop state, a load check signal for checking whether or not the electronic device is placed on the contactless charger in a rechargeable manner, wherein the transceiving section is further configured to intermittently transmit, in the charge stop state, a charge restart check command for checking whether or not the electronic device requires recharging, wherein the transceiving section is capable of transmitting the load check signal separately from the charge restart check command, and wherein time intervals at which the charge restart check command is transmitted are larger than time intervals at which the load check signal is transmitted. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 11, 12)
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10. A contactless charging system including an electronic device and a contactless charger for charging the electronic device in a contactless fashion, wherein
the electronic device transmits a full charge command indicating that charge of the electronic device is completed; -
the contactless charger configured to shift to a charge stop state in which charge of the electronic device is not performed, upon receipt of the full charge command; the contactless charger configured to (1) intermittently generate, in the charge stop state, a load check signal for checking whether or not the electronic device is placed on the contactless charger in a state where the electronic device can be recharged, and (2) transmit the load check signal; the contactless charger further configured to (1) generate, in the charge stop state, a charge restart check command for checking whether or not the electronic device requests recharge, and (2) transmit the charge restart check command separate from the load check signal;
whereinthe contactless charger shifts to a power transfer state when it receives a recharge command indicating that the electronic device requests recharge in response to the charge restart check command, and remains in a charge stop state when it does not receive the recharge command in response to the charge restart check command; and wherein time intervals at which the charge restart check command is generated are larger than time intervals at which the load check signal is generated.
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Specification