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Wireless power supply system, wireless power transmitting device, and wireless power receiving device
US8933583B2 · US · B2
| Field | Value |
|---|---|
| Publication number | US-8933583-B2 |
| Application number | US-201113231757-A |
| Country | US |
| Kind code | B2 |
| Filing date | Sep 13, 2011 |
| Priority date | Mar 30, 2009 |
| Publication date | Jan 13, 2015 |
| Grant date | Jan 13, 2015 |
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Abstract
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A wireless power supply system includes: a wireless power transmitting device configured to include a variable resonant circuit having a variable-controllable resonant frequency characteristic, and to transmit electric power wirelessly via the variable resonant circuit; a power transmission control unit configured to variably control the resonant frequency characteristic of the variable resonant circuit; and a plurality of wireless power receiving devices configured to include respective unique resonant circuits having respective unique resonant frequency characteristics which are different to each other, and to wirelessly receive power from the wireless power transmitting device by a magnetic field resonance mode arising as a result of the unique resonant circuit tuning to a resonant frequency of the variable resonant circuit.
First claim
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What is claimed is: 1. A wireless power supply system, comprising: a wireless power transmitting device configured to include a variable resonant circuit including a power transmitting coil and having a variable-controllable resonant frequency characteristic, and to transmit electric power wirelessly via the variable resonant circuit; an electromagnetic induction coil, which is included in the wireless power transmitting device, configured to separate from the power transmitting…
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Frequently asked questions
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- What does patent US8933583B2 cover?
- A wireless power supply system includes: a wireless power transmitting device configured to include a variable resonant circuit having a variable-controllable resonant frequency characteristic, and to transmit electric power wirelessly via the variable resonant circuit; a power transmission control unit configured to variably control the resonant frequency characteristic of the variable resonan…
- Who is the assignee on this patent?
- Uchida Akiyoshi, Fujitsu Ltd
- What technology area does this patent fall under?
- Primary CPC classification H02J50/80. Mapped technology areas include Electricity.
- When was this patent published?
- Publication date Tue Jan 13 2015 00:00:00 GMT+0000 (Coordinated Universal Time) (B2). Legal status and post-grant events are not shown on this page.
- What related patents are in patentsdb?
- We list 8 related publications on this page (citations in our corpus or others sharing the same primary CPC).