Load impedance detection for static or dynamic adjustment of passive loads
US-9071284-B2 · Jun 30, 2015 · US
Systems and methods for detecting wireless charging transmit characteristics
US9190876B2 · US · B2
| Field | Value |
|---|---|
| Publication number | US-9190876-B2 |
| Application number | US-201313801981-A |
| Country | US |
| Kind code | B2 |
| Filing date | Mar 13, 2013 |
| Priority date | Sep 28, 2012 |
| Publication date | Nov 17, 2015 |
| Grant date | Nov 17, 2015 |
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Abstract
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This disclosure provides systems, methods and apparatus for detecting wireless charging transmit characteristics. One aspect of the disclosure provides a method of detecting a transmit characteristic in a wireless power transmission device. The device includes a series element electrically coupled to a transmit coil. The method includes determining real and imaginary components of a first voltage at a first terminal of the series element. The method further includes determining real and imaginary components of a second voltage at a second terminal of the series element. The method further includes determining real and imaginary components of a current through the series element, based on the determined first and second voltages. The method further includes determining transmit characteristics such as nodal voltages, currents, power and impedances based on determined voltages and currents. The method further includes adjusting a characteristic of a wireless power transmission based on the determined transmit characteristics.
First claim
Opening claim text (preview).
What is claimed is: 1. A method of detecting a transmit characteristic in a wireless power transmission device comprising a series element electrically coupled to a transmit coil, comprising: determining real and imaginary components of a first voltage at a first terminal of the series element; determining real and imaginary components of a second voltage at a second terminal of the series element; determining real and imaginary components of a current through the series eleme…
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Frequently asked questions
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- What does patent US9190876B2 cover?
- This disclosure provides systems, methods and apparatus for detecting wireless charging transmit characteristics. One aspect of the disclosure provides a method of detecting a transmit characteristic in a wireless power transmission device. The device includes a series element electrically coupled to a transmit coil. The method includes determining real and imaginary components of a first volta…
- Who is the assignee on this patent?
- Qualcomm Inc
- 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 Nov 17 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 1 related publication on this page (citations in our corpus or others sharing the same primary CPC).