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Wireless power transmission system

一种无线功率传输、功率传输的技术，应用在无线功率传输方法和系统领域，能够解决不能保证有效传输等问题

Inactive Publication Date: 2010-05-19
H·泽内
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, even if the device is located, effective transmission cannot be guaranteed due to reflections and interference from objects in the vicinity of the receiving device

Method used

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Examples

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Embodiment Construction

[0021] Such as Figures 1A-1B As shown, the present invention includes a system 100a, or alternatively a system 100b, for providing wireless charging and / or mains power to an electronic / electrical device, such as a laptop computer 102, etc., via microwave energy. In the system 100a or the system 100b, the power transmission grid 101a or alternatively the power transmission grid 101b is capable of obtaining operable power from an AC power source through a power cord P plugged into an electrical outlet O. The microwave transmission frequency is preferably an available FCC unregulated frequency of the appropriate wavelength. Since the wavelength can limit the resolving power of the phased array 101a or alternatively the phased array 101b, the optimum frequency has been determined to be 5.8 GHz (5.17 cm wavelength), although it does not limit the options at which the system can operate at other frequencies, This frequency is suitable for transmitting power to devices such as lapt...

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PUM

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Abstract

The wireless power transmission is a system for providing wireless charging and / or primary power to electronic / electrical devices via microwave energy. The microwave energy is focused onto a device to be charged by a power transmitter having one or more adaptively-phased microwave array emitters. Rectennas within the device to be charged receive and rectify the microwave energy and use it for battery charging and / or for primary power. A communications channel is opened between the wireless power source and the device to be charged. The device to be charged reports to the power source via the channel a received beam signal strength at the rectennas. This information is used by the system to adjust the transmitting phases of the microwave array emitters until a maximum microwave energy is reported by the device to be charged. Backscatter is minimized by physically configuring the microwave array emitters in a substantially non-uniform, non-coplanar manner.

Description

technical field [0001] The present invention relates generally to power transfer systems and battery chargers, and more particularly to a wireless power transfer method and system for powering devices requiring electrical power through microwave transmission. Background technique [0002] Many portable electronic devices are powered by batteries. Rechargeable batteries are often used to avoid the cost of replacing traditional dry cell batteries, as well as to conserve precious resources. However, recharging batteries using conventional rechargeable battery chargers requires access to an AC power outlet, which is sometimes not available. Therefore, it is desirable to derive power for battery chargers from electromagnetic radiation. [0003] While solar battery chargers are well known, solar cells are expensive and may require large numbers of solar cells to charge a battery of any comparable capacity. Another potential source of electromagnetic energy that can power batter...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H02J17/00
CPCH02J17/00H02J7/007H02J50/23H02J50/80H02J50/402H02J50/27H02J50/90H02J50/40H04B5/79H02J50/70H02J50/20
Inventor H·泽内
Owner H·泽内
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