Power-receiving device, wireless power-feeding system including power-receiving device, and wireless communication system including power-receiving device
First Claim
1. A power-receiving device comprising:
- a power-receiving resonance coil on a first surface of a substrate, the power-receiving resonance coil being configured to generate a first high-frequency voltage by a resonance method;
a power-receiving coil on a second surface of the substrate, the power-receiving coil being configured to generate a second high-frequency voltage by using electromagnetic induction between the power-receiving coil and the power-receiving resonance coil;
a wireless power-feeding unit electrically connected to the power-receiving coil; and
a wireless communication unit electrically connected to the power-receiving coil, the wireless communication unit comprising;
a reception circuit configured to receive a signal that has been received by at least one of the power-receiving resonance coil and the power-receiving coil; and
a reception controller configured to control the signal received by the reception circuit,wherein the wireless power-feeding unit and the wireless communication unit are provided over the substrate and integrated,wherein the power-receiving resonance coil and the power-receiving coil are overlapped with each other with the substrate positioned therebetween, andwherein the substrate is a flexible substrate.
1 Assignment
0 Petitions
Accused Products
Abstract
When a portable electronic appliance is provided with two systems, a wireless power-feeding system and a wireless communication system, each system requires two power-receiving devices, a coil and an antenna, leading to a problem of increased electronic appliance size and cost. Wireless power feeding employs the resonance method and uses a resonance coil using the resonance method and a power-receiving coil that receives power from the resonance coil. At least one of the resonance coil and the power-receiving coil can also be used as an antenna for wireless communication. Thus, a power-receiving device that can be used for two systems, wireless power feeding and wireless communication, can be provided.
20 Citations
22 Claims
-
1. A power-receiving device comprising:
-
a power-receiving resonance coil on a first surface of a substrate, the power-receiving resonance coil being configured to generate a first high-frequency voltage by a resonance method; a power-receiving coil on a second surface of the substrate, the power-receiving coil being configured to generate a second high-frequency voltage by using electromagnetic induction between the power-receiving coil and the power-receiving resonance coil; a wireless power-feeding unit electrically connected to the power-receiving coil; and a wireless communication unit electrically connected to the power-receiving coil, the wireless communication unit comprising; a reception circuit configured to receive a signal that has been received by at least one of the power-receiving resonance coil and the power-receiving coil; and a reception controller configured to control the signal received by the reception circuit, wherein the wireless power-feeding unit and the wireless communication unit are provided over the substrate and integrated, wherein the power-receiving resonance coil and the power-receiving coil are overlapped with each other with the substrate positioned therebetween, and wherein the substrate is a flexible substrate. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8)
-
-
9. A power-receiving device comprising:
-
a power-receiving resonance coil on a first surface of a substrate, the power-receiving resonance coil being configured to generate a first high-frequency voltage by a resonance method; a capacitor on the first surface of the substrate, the capacitor electrically connected to the power-receiving resonance coil; a power-receiving coil on a second surface of the substrate, the power-receiving coil being configured to generate a second high-frequency voltage by using electromagnetic induction between the power-receiving coil and the power-receiving resonance coil; a wireless power-feeding unit electrically connected to the power-receiving coil; and a wireless communication unit electrically connected to the power-receiving coil, the wireless communication unit comprising; a reception circuit configured to receive a signal that has been received by at least one of the power-receiving resonance coil and the power-receiving coil; and a reception controller configured to control the signal received by the reception circuit, wherein the wireless power-feeding unit and the wireless communication unit are integrated over the substrate, wherein the power-receiving resonance coil and the power-receiving coil are overlapped with each other with the substrate positioned therebetween, and wherein the substrate is a flexible substrate. - View Dependent Claims (10, 11, 12, 13, 14, 15, 16)
-
-
17. A power-receiving device comprising:
-
a power-receiving resonance coil configured to generate a first high-frequency voltage by a resonance method; and a power-receiving coil configured to generate a second high-frequency voltage by using electromagnetic induction between the power-receiving coil and the power-receiving resonance coil, wherein at least one of the power-receiving resonance coil and the power-receiving coil receives a signal on one of a carrier wave and an amplitude modulation wave by using electromagnetic induction, wherein the power-receiving coil is electrically connected to a wireless power-feeding unit and a wireless communication unit, wherein the wireless power-feeding unit includes; a rectifier circuit configured to rectify the second high-frequency voltage generated by the power-receiving coil; a converter electrically connected to the rectifier circuit; and a load configured to receive power converted by the converter, wherein the wireless communication unit includes; a reception circuit configured to receive the signal; a reception controller configured to control the signal received by the reception circuit; a modulation transistor electrically connected to the reception controller; and a load modulation element electrically connected to the modulation transistor, and wherein the wireless power-feeding unit and the wireless communication unit are integrated. - View Dependent Claims (18, 19)
-
-
20. A power-receiving device comprising:
-
a power-receiving resonance coil configured to generate a first high-frequency voltage by a resonance method; and a power-receiving coil configured to generate a second high-frequency voltage by using electromagnetic induction between the power-receiving coil and the power-receiving resonance coil, wherein at least one of the power-receiving resonance coil and the power-receiving coil receives a signal on one of a carrier wave and an amplitude modulation wave by using electromagnetic induction, wherein the power-receiving coil is electrically connected to a wireless power-feeding unit and a wireless communication unit, wherein the wireless power-feeding unit includes; a rectifier circuit configured to rectify the second high-frequency voltage generated by the power-receiving coil; a converter electrically connected to the rectifier circuit; and a load receiving power converted by the converter, wherein the wireless communication unit includes; a reception circuit configured to receive the signal; a reception controller configured to control the signal received by the reception circuit; a modulation transistor electrically connected to the reception controller; and a load modulation element electrically connected to the modulation transistor, wherein the power-receiving resonance coil and the power-receiving coil are placed to at least partly overlap with each other, and wherein the wireless power-feeding unit and the wireless communication unit are integrated. - View Dependent Claims (21, 22)
-
Specification