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Systems and methods for detecting wireless charging transmit characteristics

A technology of emission characteristics and wireless power, applied in transmission systems, near-field transmission systems, electrical components, etc., can solve problems such as inconvenient or troublesome connectors

Active Publication Date: 2015-06-03
QUALCOMM INC
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Cables and similar connectors can sometimes be inconvenient or cumbersome and have other disadvantages

Method used

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  • Systems and methods for detecting wireless charging transmit characteristics
  • Systems and methods for detecting wireless charging transmit characteristics
  • Systems and methods for detecting wireless charging transmit characteristics

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Embodiment Construction

[0021] The detailed description set forth below in conjunction with the accompanying drawings is intended as a description of exemplary embodiments of the invention and is not intended to represent the only embodiments in which the invention may be practiced. The term "exemplary" is used throughout this description to mean "serving as an example, instance, or illustration" and should not necessarily be construed as preferred or advantageous over other exemplary embodiments. The detailed description contains specific details for the purpose of providing a thorough understanding of exemplary embodiments of the invention. In some instances, devices are shown in block diagram form.

[0022] Transferring power wirelessly may refer to transferring any form of energy associated with an electric, magnetic, electromagnetic, or other field from a transmitter to a receiver without the use of physical electrical conductors (eg, power may be transferred via free space) . Power output int...

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Abstract

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.

Description

technical field [0001] The present invention generally relates to wireless power. More particularly, the present invention relates to detecting emission characteristics in wireless power systems. Background technique [0002] An increasing number and variety of electronic devices are powered via rechargeable batteries. These devices include mobile phones, portable music players, laptop computers, tablet computers, computer peripherals, communication devices (eg, Bluetooth devices), digital cameras, hearing aids, and the like. While battery technology has improved, battery-powered electronic devices increasingly demand and consume greater amounts of power, thereby often requiring recharging. Rechargeable devices are often charged via a wired connection through a cable or other similar connector that is physically connected to a power supply. Cables and similar connectors can sometimes be inconvenient or cumbersome and have other disadvantages. A wireless charging system c...

Claims

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Application Information

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IPC IPC(8): H04B5/00
CPCH02J50/10H02J50/80H02J50/12H02J50/40H02J50/60H02J50/90H04B5/24H04B5/79
Inventor 加布里埃尔·艾萨克·梅奥瑞安·曾爱德华·肯尼思·卡拉勒
Owner QUALCOMM INC