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1. (EP2909912) FOREIGN OBJECT DETECTION IN WIRELESS ENERGY TRANSFER SYSTEMS

Office : European Patent Office
Application Number: 13789094 Application Date: 21.10.2013
Publication Number: 2909912 Publication Date: 26.08.2015
Publication Kind : A2
Designated States: AL,AT,BA,BE,BG,CH,CY,CZ,DE,DK,EE,ES,FI,FR,GB,GR,HR,HU,IE,IS,IT,LI,LT,LU,LV,MC,ME,MK,MT,NL,NO,PL,PT,RO,RS,SE,SI,SK,SM,TR
Prior PCT appl.: Application Number:US2013065963 ; Publication Number: Click to see the data
IPC:
H02J 7/02
B60L 11/18
G01R 29/08
G01V 3/08
G01V 3/12
H01F 38/14
H02J 5/00
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
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
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
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
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
CPC:
H02J 50/60
B60L 53/12
B60L 53/124
B60L 53/36
B60L 53/38
B60L 53/65
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 7/025
H02J 50/12
H02J 50/50
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 CORP
Inventors: ROY ARUNANSHU MOHAN
KATZ NOAM
KURS ANDRE B
BUENROSTRO CHRISTOPHER
VERGHESE SIMON
KESLER MORRIS P
HALL KATHERINE L
LOU HERBERT TOBY
Priority Data: 201261716432 19.10.2012 US
2013065963 21.10.2013 US
201361866703 16.08.2013 US
201361877482 13.09.2013 US
Title: (DE) FREMDKÖRPERERKENNUNG IN DRAHTLOSEN ENERGIEÜBERTRAGUNGSSYSTEMEN
(EN) FOREIGN OBJECT DETECTION IN WIRELESS ENERGY TRANSFER SYSTEMS
(FR) DÉTECTION DE CORPS ÉTRANGER DANS DES SYSTÈMES DE TRANSFERT D'ÉNERGIE SANS FIL
Abstract:
(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.
(FR) L'invention porte sur un appareil, des procédés et des systèmes de transfert d'énergie sans fil, qui comprennent une source d'alimentation comprenant au moins un résonateur, un récepteur d'énergie comprenant au moins un résonateur, un premier détecteur comprenant une ou plusieurs spires de matériau conducteur et configuré pour générer un signal électrique sur la base d'un champ magnétique entre la source d'énergie et le récepteur d'énergie, un second détecteur comprenant un matériau conducteur, et des circuits électroniques de commande couplés aux premier et seconds détecteurs. Durant le fonctionnement, les circuits électroniques de commande sont configurés pour mesurer le signal électrique du premier détecteur et comparer le signal électrique mesuré du premier détecteur à des informations électriques de base pour le premier détecteur afin de déterminer des informations indiquant si des débris se trouvent ou non entre la source d'énergie et le récepteur d'énergie.
Also published as:
CN104885327JP2016502385WO/2014/063159