Tire monitoring sensor, system and conrol method thereof, and vehicle having the same
US-2024416687-A1 · Dec 19, 2024 · US
Contactless power feeding apparatus
US9369181B2 · US · B2
| Field | Value |
|---|---|
| Publication number | US-9369181-B2 |
| Application number | US-201113884438-A |
| Country | US |
| Kind code | B2 |
| Filing date | Sep 29, 2011 |
| Priority date | Nov 12, 2010 |
| Publication date | Jun 14, 2016 |
| Grant date | Jun 14, 2016 |
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Abstract
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A contactless power feeding apparatus includes a secondary winding to which power is supplied from a primary winding by an AC power supply. An impedance absolute-value characteristic of Z 1 has a frequency of a fundamental wave component to be between a frequency where a local maximum exists and that is nearest to the frequency of the fundamental wave component, and a frequency where a local minimum exists and that is nearest to the frequency of the fundamental wave component. An impedance absolute-value characteristic of Z 2 has the frequency of the fundamental wave component to be between a frequency where the local maximum exists and that is nearest to the frequency of the fundamental wave component, and a frequency where the local minimum exists and that is nearest to the frequency of the fundamental wave component.
First claim
Opening claim text (preview).
The invention claimed is: 1. A contactless power feeding apparatus comprising a secondary winding to which power is supplied from a primary winding by an AC power supply, wherein an impedance absolute-value characteristic of Z 1 with respect to a frequency has a frequency of a fundamental wave component of the AC power supply to be between a frequency where a local maximum exists and that is nearest to the frequency of the fundamental wave component of the AC power supply, and a frequency where a local minimum exists and that is nearest to the frequency of the fundamental wave component, and an impedance absolute-value characteristic of Z 2 with respect to the frequency has the frequency of the fundamental wave component to be between a frequency where the local maximum exists and that is nearest to the frequency of the fundamental wave component of the AC power supply, and a frequency where the local minimum exists and that is nearest to the frequency of the fundamental wave component, where Z 1 indicates the impedance of just a primary side when viewed from an output side of the AC power supply, and Z 2 indicates an impedance of just a secondary side when viewed from a side of a load to be connected to the secondary winding. 2. The contactless power feeding apparatus according to claim 1 , wherein a first capacitor is connected in series with the primary winding, a second capacitor is connected in parallel with the primary winding, a third capacitor is connected in series with the secondary winding, and a fourth capacitor is connected in parallel with the secondary winding, and the following relationships are satisfied: f 1A <f 0 <f 1B ; and f 2A <f 0 <f 2B , provided that the following equations are satisfied: f 1 A = 1 2 π L 1 ( C 1 s + C 1 p ) , f 1 B = 1 2 π L 1 C 1 p , f 2 A = 1 2 π L 2 ( C 2 S + C 2 p ) , and f 2
Assignees
Inventors
Classifications
using inductive coupling · CPC title
- H02J50/12Primary
of the resonant type · CPC title
Electricity · mapped topic
- H04B5/0037Primary
Electricity · mapped topic
Electricity · mapped topic
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- What does patent US9369181B2 cover?
- A contactless power feeding apparatus includes a secondary winding to which power is supplied from a primary winding by an AC power supply. An impedance absolute-value characteristic of Z 1 has a frequency of a fundamental wave component to be between a frequency where a local maximum exists and that is nearest to the frequency of the fundamental wave component, and a frequency where a local m…
- Who is the assignee on this patent?
- Kai Toshihiro, Kraisorn Throngnumchai, Minagawa Yusuke, and 1 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 Jun 14 2016 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).