Variable diameter coil for efficient inductive charging
First Claim
Patent Images
1. A wireless charging coil, comprising:
- an electrically conductive conduit, comprising;
first and second loops spaced apart from each other, the first loop formed from a first wire portion having a first wire diameter and the second loop formed from a second wire portion having a second wire diameter greater than the first wire diameter, the first and second loops being configured to receive power by induction.
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Accused Products
Abstract
This application relates to inductive charging coil configurations. In particular, the wireless charging coil configurations are arranged in a shape and size suitable for utilizing available space within a device housing. In some embodiments, wires making up the charging coil have varying diameters configured to optimize the size and shape of the charging coil so that available space can be fully utilized.
7 Citations
19 Claims
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1. A wireless charging coil, comprising:
an electrically conductive conduit, comprising; first and second loops spaced apart from each other, the first loop formed from a first wire portion having a first wire diameter and the second loop formed from a second wire portion having a second wire diameter greater than the first wire diameter, the first and second loops being configured to receive power by induction. - View Dependent Claims (2, 3, 4, 5, 6)
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7. A portable electronic device, comprising:
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a device housing comprising a wall defining a concave recess within the device housing; and a charging coil, comprising an electrically conductive conduit arranged in a plurality of loops, an average outer diameter of a first portion of the electrically conductive conduit arranged in a central portion of the concave recess being greater than an average outer diameter of a second portion of the electrically conductive conduit that is arranged in a peripheral portion of the concave recess. - View Dependent Claims (8, 9, 10, 11, 12, 13, 14)
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15. A charging coil, comprising:
an electrically conductive conduit, comprising; a first wire having a first length, and a second wire having a second length less than the first length, the second wire being coupled with a portion of the first wire disposed in a central portion of the charging coil, wherein the electrically conductive conduit is arranged in a plurality of loops such that an average outer diameter of a first segment of the electrically conductive conduit is different than an average outer diameter of a second segment of the electrically conductive conduit, the first and second wires being configured to receive power by induction. - View Dependent Claims (16, 17, 18, 19)
Specification