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1. WO2022005526 - MULTI-GAUGE STRANDED COIL FOR WIRELESS CHARGING

Publication Number WO/2022/005526
Publication Date 06.01.2022
International Application No. PCT/US2021/013089
International Filing Date 12.01.2021
IPC
H01F 27/28 2006.1
HELECTRICITY
01BASIC ELECTRIC ELEMENTS
FMAGNETS; INDUCTANCES; TRANSFORMERS; SELECTION OF MATERIALS FOR THEIR MAGNETIC PROPERTIES
27Details of transformers or inductances, in general
28Coils; Windings; Conductive connections
H01F 27/36 2006.1
HELECTRICITY
01BASIC ELECTRIC ELEMENTS
FMAGNETS; INDUCTANCES; TRANSFORMERS; SELECTION OF MATERIALS FOR THEIR MAGNETIC PROPERTIES
27Details of transformers or inductances, in general
34Special means for preventing or reducing unwanted electric or magnetic effects, e.g. no-load losses, reactive currents, harmonics, oscillations, leakage fields
36Electric or magnetic shields or screens
H01F 38/14 2006.1
HELECTRICITY
01BASIC ELECTRIC ELEMENTS
FMAGNETS; INDUCTANCES; TRANSFORMERS; SELECTION OF MATERIALS FOR THEIR MAGNETIC PROPERTIES
38Adaptations of transformers or inductances for specific applications or functions
14Inductive couplings
H01F 27/00 2006.1
HELECTRICITY
01BASIC ELECTRIC ELEMENTS
FMAGNETS; INDUCTANCES; TRANSFORMERS; SELECTION OF MATERIALS FOR THEIR MAGNETIC PROPERTIES
27Details of transformers or inductances, in general
H02J 50/10 2016.1
HELECTRICITY
02GENERATION, CONVERSION, OR DISTRIBUTION OF ELECTRIC POWER
JCIRCUIT ARRANGEMENTS OR SYSTEMS FOR SUPPLYING OR DISTRIBUTING ELECTRIC POWER; SYSTEMS FOR STORING ELECTRIC ENERGY
50Circuit arrangements or systems for wireless supply or distribution of electric power
10using inductive coupling
H01F 27/34 2006.1
HELECTRICITY
01BASIC ELECTRIC ELEMENTS
FMAGNETS; INDUCTANCES; TRANSFORMERS; SELECTION OF MATERIALS FOR THEIR MAGNETIC PROPERTIES
27Details of transformers or inductances, in general
34Special means for preventing or reducing unwanted electric or magnetic effects, e.g. no-load losses, reactive currents, harmonics, oscillations, leakage fields
Applicants
  • GOOGLE LLC [US]/[US]
Inventors
  • JIA, Liang
Agents
  • GLAD, Brittan A.
Priority Data
63/046,32830.06.2020US
Publication Language English (en)
Filing Language English (EN)
Designated States
Title
(EN) MULTI-GAUGE STRANDED COIL FOR WIRELESS CHARGING
(FR) BOBINE À BRINS DE GABARITS MULTIPLES POUR CHARGE SANS FIL
Abstract
(EN) This document describes a multi-gauge stranded coil (104) for wireless charging and associated methods and systems. The multi-gauge stranded coil includes multiple sections (114, 116, 118) connected together with different gauges or number of strands relative to one another. Inner turns of the coil have a thinner gauge or fewer strands of wire than outer turns of the coil. The thinner gauge or fewer strands in the inner turns reduce AC resistance in the inner turns. Thicker gauge or more strands in the outer turns reduce DC resistance in the outer turns. The differing gauges or number of strands in the different sections of the coil optimize a tradeoff between AC and DC resistances throughout the coil. Also, a shielding material (106) may include a non-uniform thickness to correspond to different thicknesses of the inner and outer turns and provide a uniform thickness for the combination of the shielding material and the coil.
(FR) Ce document décrit une bobine à brins de gabarits multiples (104) destinée à une charge sans fil ainsi que des procédés et des systèmes associés. La bobine à brins de gabarits multiples comprend de multiples sections (114, 116, 118) reliées ensemble avec des gabarits ou nombres différents de brins les unes aux autres. Les spires internes de la bobine ont un gabarit plus fin que les spires externes de la bobine ou un nombre réduit de brins de fil. Un gabarit plus fin ou un nombre réduit de brins parmi les spires internes réduit la résistance au courant alternatif parmi les spires internes. Un gabarit plus épais ou un nombre accru de brins parmi les spires externes réduit la résistance au courant continu parmi les spires externes. Les différents gabarits ou nombres de brins parmi les différentes sections de la bobine optimisent un compromis entre les résistances aux courants alternatif et continu à travers la bobine. En outre, un matériau de blindage (106) peut comprendre une épaisseur non uniforme pouvant correspondre à différentes épaisseurs des spires internes et externes et fournir une épaisseur uniforme pour la combinaison de matériau de blindage et de bobine.
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