Some content of this application is unavailable at the moment.
If this situation persist, please contact us atFeedback&Contact
1. (US20170025904) Foreign object detection in wireless energy transfer systems

Office : United States of America
Application Number: 15287971 Application Date: 07.10.2016
Publication Number: 20170025904 Publication Date: 26.01.2017
Grant Number: 10211681 Grant Date: 19.02.2019
Publication Kind : B2
IPC:
H02J 50/60
G01R 29/08
H02J 50/50
H01F 38/14
H02J 5/00
G01V 3/08
H02J 7/02
B60L 11/18
H02J 50/12
G01V 3/10
G01V 3/12
[IPC code unknown for H02J 50/60]
G PHYSICS
01
MEASURING; TESTING
R
MEASURING ELECTRIC VARIABLES; MEASURING MAGNETIC VARIABLES
29
Arrangements for measuring or indicating electric quantities not covered by groups G01R19/-G01R27/135
08
Measuring electromagnetic field characteristics
[IPC code unknown for H02J 50/50]
H ELECTRICITY
01
BASIC ELECTRIC ELEMENTS
F
MAGNETS; INDUCTANCES; TRANSFORMERS; SELECTION OF MATERIALS FOR THEIR MAGNETIC PROPERTIES
38
Adaptations of transformers or inductances for specific applications or functions
14
Inductive couplings
H ELECTRICITY
02
GENERATION, CONVERSION, OR DISTRIBUTION OF ELECTRIC POWER
J
CIRCUIT ARRANGEMENTS OR SYSTEMS FOR SUPPLYING OR DISTRIBUTING ELECTRIC POWER; SYSTEMS FOR STORING ELECTRIC ENERGY
5
Circuit arrangements for transfer of electric power between ac networks and dc networks
G PHYSICS
01
MEASURING; TESTING
V
GEOPHYSICS; GRAVITATIONAL MEASUREMENTS; DETECTING MASSES OR OBJECTS; TAGS
3
Electric or magnetic prospecting or detecting; Measuring magnetic field characteristics of the earth, e.g. declination or deviation
08
operating with magnetic or electric fields produced or modified by objects or geological structures or by detecting devices
H ELECTRICITY
02
GENERATION, CONVERSION, OR DISTRIBUTION OF ELECTRIC POWER
J
CIRCUIT ARRANGEMENTS OR SYSTEMS FOR SUPPLYING OR DISTRIBUTING ELECTRIC POWER; SYSTEMS FOR STORING ELECTRIC ENERGY
7
Circuit arrangements for charging or depolarising batteries or for supplying loads from batteries
02
for charging batteries from ac mains by converters
B PERFORMING OPERATIONS; TRANSPORTING
60
VEHICLES IN GENERAL
L
PROPULSION OF ELECTRICALLY-PROPELLED VEHICLES; SUPPLYING ELECTRIC POWER FOR AUXILIARY EQUIPMENT OF ELECTRICALLY-PROPELLED VEHICLES; ELECTRODYNAMIC BRAKE SYSTEMS FOR VEHICLES IN GENERAL; MAGNETIC SUSPENSION OR LEVITATION FOR VEHICLES; MONITORING OPERATING VARIABLES OF ELECTRICALLY-PROPELLED VEHICLES; ELECTRIC SAFETY DEVICES FOR ELECTRICALLY-PROPELLED VEHICLES
11
Electric propulsion with power supplied within the vehicle
18
using power supplied from primary cells, secondary cells, or fuel cells
[IPC code unknown for H02J 50/12]
G PHYSICS
01
MEASURING; TESTING
V
GEOPHYSICS; GRAVITATIONAL MEASUREMENTS; DETECTING MASSES OR OBJECTS; TAGS
3
Electric or magnetic prospecting or detecting; Measuring magnetic field characteristics of the earth, e.g. declination or deviation
08
operating with magnetic or electric fields produced or modified by objects or geological structures or by detecting devices
10
using induction coils
G PHYSICS
01
MEASURING; TESTING
V
GEOPHYSICS; GRAVITATIONAL MEASUREMENTS; DETECTING MASSES OR OBJECTS; TAGS
3
Electric or magnetic prospecting or detecting; Measuring magnetic field characteristics of the earth, e.g. declination or deviation
12
operating with electromagnetic waves
CPC:
B60L 11/182
B60L 11/1829
B60L 11/1833
B60L 11/1846
B60L 2210/30
B60L 2210/40
B60L 2240/36
B60L 2250/10
B60L 2270/147
G01R 29/0814
G01V 3/081
G01V 3/10
G01V 3/12
H01F 38/14
H02J 5/005
H02J 50/12
H02J 50/50
H02J 50/60
H02J 7/025
Y02T 10/7005
Y02T 10/7072
Y02T 10/7241
Y02T 90/121
Y02T 90/122
Y02T 90/125
Y02T 90/127
Y02T 90/128
Y02T 90/14
Y02T 90/163
Y02T 90/169
Y04S 30/14
Applicants: WiTricity Corporation
Inventors: Arunanshu Mohan Roy
Noam Katz
Andre B. Kurs
Christopher Buenrostro
Simon Verghese
Morris P. Kesler
Katherine L. Hall
Herbert Toby Lou
Agents: Fish & Richardson P.C.
Priority Data:
Title: (EN) Foreign object detection in wireless energy transfer systems
Abstract: front page image
(EN)

The disclosure features apparatus, methods, and systems for wireless power transfer that include a power source featuring at least one resonator, a power receiver featuring at least one resonator, a first detector featuring one or more loops of conductive material and configured to generate an electrical signal based on a magnetic field between the power source and the power receiver, a second detector featuring conductive material, and control electronics coupled to the first and second detectors, where during operation, the control electronics are configured to measure the electrical signal of the first detector and compare the measured electrical signal of the first detector to baseline electrical information for the first detector to determine information about whether debris is positioned between the power source and the power receiver.