Systems, methods, and apparatus for increased foreign object detection loop array sensitivity

A loop and device technology, which is applied in the field of devices that detect the sensitivity of loop arrays for foreign objects, can solve problems such as objects getting hot, nearby objects melting, and catching fire.

Active Publication Date: 2016-06-01
WITRICITY CORP
View PDF5 Cites 6 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, wireless fields can induce eddy currents in well-conducting (e.g., metal) objects positioned within the wireless field, potentially causing the object to heat up, vibrate, or cause nearby objects to melt or catch fire

Method used

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
View more

Image

Smart Image Click on the blue labels to locate them in the text.
Viewing Examples
Smart Image
  • Systems, methods, and apparatus for increased foreign object detection loop array sensitivity
  • Systems, methods, and apparatus for increased foreign object detection loop array sensitivity
  • Systems, methods, and apparatus for increased foreign object detection loop array sensitivity

Examples

Experimental program
Comparison scheme
Effect test

Embodiment Construction

[0031] 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 the exemplary embodiments. In some instances, some devices are shown in block diagram form.

[0032] 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). The power output in a wire...

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to view more

PUM

No PUM Login to view more

Abstract

This disclosure provides systems, methods and apparatus for detecting foreign objects. An apparatus for detecting a presence of an object is provided including a plurality of electrically conductive loops (701, 702, 703, 704) arranged in an array. The apparatus includes a sensor circuit (730) configured to determine a characteristic associated with each of the plurality of loops. The apparatus includes a hardware processor (734) configured to, for each loop of the plurality of loops, determine a parameter based on the characteristic associated with the loop and the characteristic associated with at least one adjacent loop. The hardware processor may be further configured to determine the presence of the object based on the parameter. The parameter may comprise a sum of a difference between the characteristic associated with the loop and a reference value for the characteristic, and a difference between the characteristic associated with each of the at least one adjacent loop and the reference value.

Description

technical field [0001] The present disclosure relates generally to wireless power transfer, and more specifically, to devices, systems, and methods for increased sensitivity of foreign object detection loop arrays. Background technique [0002] Remote systems, such as vehicles, that incorporate electrically derived motion power received from an energy storage device, such as a battery, have been introduced. For example, hybrid electric vehicles include an on-board charger that charges the vehicle using power from the vehicle's brakes and a conventional motor. It is often proposed to charge battery electric vehicles (EVs) by some type of wired alternating current (AC), such as a household or commercial AC supply. A wired charging connection requires a cable or other similar connector that physically connects to the power supply. Cables and similar connectors can sometimes be inconvenient or bulky, among other disadvantages. Wireless charging systems capable of transferring...

Claims

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to view more

Application Information

Patent Timeline
no application Login to view more
IPC IPC(8): H02J7/02H02J50/12B60L11/18
CPCY02T90/12Y02T10/7072Y02T90/14B60L2270/147B60L53/38B60L53/36B60L53/124B60L53/122B60L53/126H02J2310/48H02J50/12H02J50/60H02J50/90H02J7/00034Y02T10/70G01B7/003G01R29/0807H02J50/80
Inventor 卢卡斯·西贝尔马塞尔·菲舍尔汉斯彼得·威德默
Owner WITRICITY CORP
Who we serve
  • R&D Engineer
  • R&D Manager
  • IP Professional
Why Eureka
  • Industry Leading Data Capabilities
  • Powerful AI technology
  • Patent DNA Extraction
Social media
Try Eureka
PatSnap group products

Browse by: Latest US Patents, China's latest patents, Technical Efficacy Thesaurus, Application Domain, Technology Topic.

© 2024 PatSnap. All rights reserved.Legal|Privacy policy|Modern Slavery Act Transparency Statement|Sitemap