Electronic device case with inductive coupling features
First Claim
1. A protective case for an electronic device, the electronic device having a housing and wireless charging circuitry and a wireless charging coil inside the housing proximate a back surface of the electronic device, the protective case comprising:
- a shell for receiving and at least partially covering the electronic device, the shell comprising a first material and having a back portion and side portions extending from the back portion, the back portion of the shell configured to be adjacent to the back surface of the electronic device when the electronic device is installed in the protective case; and
a core comprising a second material that has a magnetic permeability substantially greater than a magnetic permeability of the first material, the core affixed to the back portion of the shell at a location on the back portion that coincides with a center region of the wireless charging coil of the wireless charging circuitry of the installed electronic device, the core to increase magnetic inductive coupling between the wireless charging coil of the installed electronic device and a source charging coil when the protective case with the installed electronic device is placed in proximity to the source charging coil.
6 Assignments
0 Petitions
Accused Products
Abstract
A protective case includes a shell for receiving and at least partially covering an electronic device. The shell includes a first material and has a back portion and side portions extending from the back portion. The back portion is configured to be adjacent to the back surface of the electronic device when the electronic device is installed. The case also includes a core comprising a second material having a magnetic permeability substantially greater than a magnetic permeability of the first material. The core is affixed to the back portion of the shell at a location that coincides with a center region of the wireless charging coil of the wireless charging circuitry of the installed electronic device. The core increases magnetic coupling between the wireless charging coil of the installed electronic device and a source charging coil when the protective case is placed in proximity to the source charging coil.
81 Citations
21 Claims
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1. A protective case for an electronic device, the electronic device having a housing and wireless charging circuitry and a wireless charging coil inside the housing proximate a back surface of the electronic device, the protective case comprising:
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a shell for receiving and at least partially covering the electronic device, the shell comprising a first material and having a back portion and side portions extending from the back portion, the back portion of the shell configured to be adjacent to the back surface of the electronic device when the electronic device is installed in the protective case; and a core comprising a second material that has a magnetic permeability substantially greater than a magnetic permeability of the first material, the core affixed to the back portion of the shell at a location on the back portion that coincides with a center region of the wireless charging coil of the wireless charging circuitry of the installed electronic device, the core to increase magnetic inductive coupling between the wireless charging coil of the installed electronic device and a source charging coil when the protective case with the installed electronic device is placed in proximity to the source charging coil. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12)
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13. A cover for an electronic device having a housing and wireless charging circuitry, the wireless charging circuitry including a wireless charging coil positioned inside the housing and proximate and substantially parallel with a back surface of the electronic device, the cover comprising:
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a back portion configured to be adjacent to the back surface of the electronic device when the electronic device is installed in the cover, the back portion comprising a first material; side portions extending from the back portion, the side portions for retaining the installed electronic device against the back portion of the cover, the back portion and the side portions at least partially covering the installed electronic device; and a coupling region in the back portion of the cover, the coupling region comprising a high magnetic permeability material that is different than the material of the back portion of the cover, the coupling region located on the back portion of the cover to align with a center region of the wireless charging coil of the wireless charging circuitry of the installed electronic device and adapted to increase magnetic coupling between the wireless charging coil of the installed electronic device and an external coil. - View Dependent Claims (14, 15, 16, 17, 18)
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19. A method of manufacturing a protective case for an electronic device having a housing, wireless charging circuitry, and a wireless charging coil positioned in the housing proximate a back surface of the electronic device, the method comprising:
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molding a shell from a first material, the shell configured for receiving and at least partially covering the electronic device, the shell having a back portion and side portions extending from the back portion, the back portion of the shell configured to be adjacent to the back surface of the electronic device when the electronic device is installed in the protective case; and embedding a core comprising a high magnetic permeability material in the back portion of the shell, the high magnetic permeability material being different than the first material, the core positioned in the back portion of the shell at a location on the back portion that coincides with a center region of the wireless charging coil of the wireless charging circuitry of the installed electronic device, the core to increase magnetic coupling between the wireless charging coil of the installed electronic device and an external coil. - View Dependent Claims (20, 21)
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Specification