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Power feeding device and wireless power feeding system
US9024482B2 · US · B2
| Field | Value |
|---|---|
| Publication number | US-9024482-B2 |
| Application number | US-201213352383-A |
| Country | US |
| Kind code | B2 |
| Filing date | Jan 18, 2012 |
| Priority date | Jan 20, 2011 |
| Publication date | May 5, 2015 |
| Grant date | May 5, 2015 |
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Abstract
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A resonant power feeding system that can provide high power transmission efficiency between a power feeding device and a power reception device without dynamically controlling the oscillation frequency in accordance with the distance between the power feeding device and the power reception device. High power transmission efficiency between the power feeding device and the power reception device is obtained by addition of a structure for adjusting the matching condition to both the power reception device and the power feeding device. Specifically, a transmission-reception circuit and a matching circuit are provided in both the power reception device and the power feeding device, and wireless signals for adjusting the matching circuit are transmitted and received through a resonant coil. Thus, the power feeding device can efficiently supply power to the power reception device without adjusting the oscillation frequency.
First claim
Opening claim text (preview).
What is claimed is: 1. A wireless power feeding device comprising: a high frequency power source configured to output an alternating-current signal; a first resonant coil configured to resonate with a second resonant coil of a wireless power reception device; a coil electromagnetically coupled to the first resonant coil; a transmission-reception circuit configured to generate a first wireless signal and demodulate a second wireless signal from the wireless power reception de…
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Frequently asked questions
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- What does patent US9024482B2 cover?
- A resonant power feeding system that can provide high power transmission efficiency between a power feeding device and a power reception device without dynamically controlling the oscillation frequency in accordance with the distance between the power feeding device and the power reception device. High power transmission efficiency between the power feeding device and the power reception device…
- Who is the assignee on this patent?
- Kamata Koichiro, Okano Shinya, Sato Misako, and 2 more
- What technology area does this patent fall under?
- Primary CPC classification H02J50/12. Mapped technology areas include Electricity.
- When was this patent published?
- Publication date Tue May 05 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).