Selectable coil array

H - Electricity – 02 – J

Patent

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Details

H02J 5/00 (2006.01) H02J 7/00 (2006.01) H02J 7/02 (2006.01)

Patent

CA 2757623

An inductive wireless power system using an array of coils with the ability to dynamically select which coils are energized. The coil array can determine the position of and provide power to one or more portable electronic devices positioned on the charging surface. The coils in the array may be connected with series resonant capacitors so that regardless of the number of coils selected, the resonance point is generally maintained. The coil array can provide spatial freedom, decrease power delivered to parasitic loads, and increase power transfer efficiency to the portable electronic devices.

Cette invention concerne un système électrique inductif sans fil utilisant un réseau de bobines avec la capacité de sélectionner de manière dynamique les bobines à alimenter. Le réseau de bobines peut déterminer la position et assurer l'alimentation d'un ou plusieurs dispositifs électroniques portables placés sur la surface de chargement. Les bobines du réseau peuvent être connectées avec des condensateurs de résonance en série de sorte que le point de résonance est généralement maintenu, indépendamment du nombre de bobines choisies. Le réseau de bobines peut assurer une liberté spatiale, réduire l'énergie perdue à cause des charges parasites et augmenter l'efficacité du transfert d'énergie vers les dispositifs électroniques portables.

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