Apparatus and system with rotatable housing for harvesting magnetic energy

• US 10,498,162 B2
• Filed: 07/27/2017
• Issued: 12/03/2019
• Est. Priority Date: 07/27/2017
• Status: Active Grant

• Current Assignee: Motorola Solutions, Inc.
• Original Assignee: Motorola Solutions, Inc.
• Inventors: Lo, Ya Yeing, Chong, Kow Chee, Krishnamurthi, Macwien, Law, Swee Hak, Lee, Sin Keng, Tan, Sue Ling
• Primary Examiner(s): Henze-Gongola, David V
• Application Number:
  US15/661,051
• Publication Number:
  US 20190036368A1
• Time in Patent Office: 859 Days
• Field of Search: 320108, 307104
• CPC Class Codes: H01F 38/14 Inductive couplings for wireless supply or distribution of electric power using inductive coupling H02J50/10
• CPC Class Codes: H02J 50/12 of the resonant type
• CPC Class Codes: H02J 50/402 the two or more transmitting or the two or more receiving devices being integrated in the same unit, e.g. power mats with several coils or antennas with several sub-antennas
• CPC Class Codes: H02J 50/90 involving detection or optimisation of position, e.g. alignment
• CPC Class Codes: H02J 7/0042 characterised by the mechanical construction
• CPC Class Codes: H04B 5/263 Multiple coils at either side
• CPC Class Codes: H04B 5/79 for data transfer in combination with power transfer

Abstract

An apparatus, device, and charging system are provided. The apparatus comprises a primary stationary receive coil and a secondary rotatable receive coil, the primary stationary receive coil being electronically coupled to the secondary rotatable receive coil. The secondary rotatable receive coil provides a charge mode position when rotated in a same plane as the primary stationary receive coil. The secondary rotatable receive coil provides non-charge mode position when retracted back against the primary stationary receive coil. The coils may be coupled is series and or parallel configurations. The primary stationary receive coil may be integrated within or appended to a housing. The secondary rotatable receive coil may be integrated within or coupled to a rotatable clip coupled to the housing. Rotation of the clip extends a charging configuration with which to charge the primary stationary receive coil and the secondary rotatable receive coil.

Claims

1. An apparatus comprising:

a primary stationary receive coil located in a housing, the housing having a rotatable clip coupled thereto;

a secondary rotatable receive coil located in the rotatable clip, the primary stationary receive coil being electrically coupled to the secondary rotatable receive coil without sensing electronics coupled therebetween;

the secondary rotatable receive coil providing a charge mode position when rotated in a same plane as the primary stationary receive coil, and the secondary rotatable receive coil providing a non-charge mode position when retracted back against the primary stationary receive coil; and

a plurality of rotatable blades coupled to the rotatable clip, each rotatable blade providing an additional secondary rotatable receive coil arranged in series and/or parallel configuration with the primary stationary receive coil.

2. The apparatus of claim 1, wherein the secondary rotatable receive coil rotates amongst a plurality of adjustable rotation positions for a charge mode.

3. The apparatus of claim 2, wherein the primary stationary receive coil and the secondary rotatable receive coil are electrically coupled by at least one of:

series coupling; and

parallel coupling.

4. The apparatus of claim 1, wherein the primary stationary receive coil and the secondary rotatable receive coil harvest electrical energy via magnetic resonance from a single external transmit coil.

5. A portable electronic device, comprising:

a housing comprising electronics and a primary stationary receive coil coupled thereto; and

at least one rotatable blade comprising a secondary receive coil integrated therein, the secondary receive coil being electrically coupled to the primary stationary receive coil without sensing electronics coupled therebetween, and each of the at least one rotatable blade comprising the secondary receive coil being rotatable in a same plane as the primary stationary receive coil; and

additional rotatable blades coupled to the housing, each of the additional rotatable blades comprising an additional receive coil arranged in a series and/or parallel with the primary stationary receive coil.

6. The portable electronic device of claim 5, wherein the primary stationary receive coil is integrated within the housing of the portable electronic device.

7. The portable electronic device of claim 5, wherein the primary stationary receive coil is appended to the housing of the portable electronic device.

8. The portable electronic device of claim 5, wherein the at least one rotatable blade is formed as a rotatable clip, the rotatable clip providing rotational offset of the secondary receive coil relative to the primary stationary receive coil of the housing.

9. The portable electronic device of claim 5, wherein the at least one rotatable blade is formed as a rotatable clip, the rotatable clip providing orientation-independent charging of the portable electronic device.

10. The portable electronic device of claim 5, wherein each of the additional receive coils of the additional rotatable blades harnesses wireless charging electrical energy via magnetic resonance.

11. The portable electronic device of claim 5, wherein portable electronic device comprises one of:

a wireless remote speaker microphone (RSM), a pager, a POD, a sensor module, a portable radio.

12. A charging system, comprising:

a portable communication device comprising a housing, the housing having a primary stationary receive coil coupled thereto;

a plurality of rotatable blades coupled to the housing;

a secondary receive coil coupled within each of the rotatable blades thereby providing a plurality of secondary rotatable receive coils, the plurality of secondary rotatable receive coils being electrically coupled to the primary stationary receive coil without sensing electronics coupled therebetween; and

a charging mat having a single transmit coil for charging the portable communication device via the primary stationary receive coil and the plurality of secondary rotatable receive coils when the plurality of secondary rotatable receive coils are rotated from the housing.

13. The charging system of claim 12, wherein the primary stationary receive coil and the secondary rotatable receive coil are electrically coupled in parallel.

14. The charging system of claim 12, wherein a primary stationary receive coil and the secondary rotatable receive coil are electrically coupled in series.

15. The charging system of claim 12, wherein charging of the portable communication device is independent of orientation of the housing on the charging mat.

16. The charging system of claim 12, wherein the rotatable blade is a belt clip having the secondary receive coil embedded therein.

17. The charging system of claim 12, wherein the plurality of blades having embedded receive coils form series and/or parallel configurations with the primary stationary receive coil.

18. The charging system of claim 12, wherein the plurality of secondary rotatable receive coils harness electrical energy via magnetic flux from the single transmit coil of the charging mat during a charge mode in which the plurality of rotatable blades are each rotated to individual offset positions relative to the primary stationary receive coil of the housing.