Tunable wireless power architectures

US2020358319A1 · US · A1

Patent metadata
FieldValue
Publication numberUS-2020358319-A1
Application numberUS-202016940471-A
CountryUS
Kind codeA1
Filing dateJul 28, 2020
Priority dateAug 4, 2011
Publication dateNov 12, 2020
Grant date

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  1. Title

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  2. Abstract

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  4. Key dates

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  5. First independent claim

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Abstract

Official abstract text for this publication.

Described herein are improved configurations for a wireless power transfer. The parameters of components of the wireless energy transfer system are adjusted to control the power delivered to the load at the device. The power output of the source amplifier is controlled to maintain a substantially 50% duty cycle at the rectifier of the device.

First claim

Opening claim text (preview).

1 . A wireless energy transfer system for transferring energy between a power supply and a load, comprising: a source resonator coil; a device resonator coil inductively coupled to the source resonator coil; a tunable switching amplifier driven by the power supply and driving the source resonator coil through a source impedance matching network, the switching amplifier having electronically controllable switching elements; a tunable switching rectifier driving the load and receiving energy from the device resonator coil though a device impedance matching network, the switching rectifier having electronically controllable switching elements; a source amplifier control configured to control a switching characteristic of the switching elements of the amplifier to regulate power extracted from the power supply; and a rectifier control configured to control a switching characteristic of the switching elements of the rectifier to regulate a characteristic of an output presented to the load, the rectifier control communicatively coupled to the source amplifier control; wherein the amplifier control provides a substantially fixed switching frequency to the switching elements of the amplifier. 2 - 24 . (canceled)

Assignees

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Classifications

  • Plug-in electric vehicles · CPC title

  • Electromobility specific charging systems or methods for batteries, ultracapacitors, supercapacitors or double-layer capacitors · CPC title

  • Energy storage systems for electromobility, e.g. batteries · CPC title

  • involving detection or optimisation of position, e.g. alignment · CPC title

  • responsive to the presence of foreign objects, e.g. detection of living beings · CPC title

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What does patent US2020358319A1 cover?
Described herein are improved configurations for a wireless power transfer. The parameters of components of the wireless energy transfer system are adjusted to control the power delivered to the load at the device. The power output of the source amplifier is controlled to maintain a substantially 50% duty cycle at the rectifier of the device.
Who is the assignee on this patent?
Witricity Corp
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 Thu Nov 12 2020 00:00:00 GMT+0000 (Coordinated Universal Time) (A1). 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).