Self-aligning data connectivity for charger

• US 9,601,929 B2
• Filed: 03/05/2012
• Issued: 03/21/2017
• Est. Priority Date: 03/05/2012
• Status: Active Grant

• Current Assignee: Cellco Partnership, Inc. (Verizon Communications Inc.)
• Original Assignee: Cellco Partnership, Inc. (Verizon Communications Inc.)
• Inventors: Khan, Taussif, Falkenthal, Robert
• Primary Examiner(s): Tso, Edward
• Assistant Examiner(s): PIGGUSH, AARON C
• Application Number:
  US13/412,351
• Publication Number:
  US 20130229148A1
• Time in Patent Office: 1,842 Days
• Field of Search: 320/107, 320/108, 320/115
• US Class Current: 1/1
• CPC Class Codes: H02J 50/10 using inductive coupling
• CPC Class Codes: H02J 50/80 involving the exchange of data, concerning supply or distribution of electric power, between transmitting devices and receiving devices
• CPC Class Codes: H02J 50/90 involving detection or optimisation of position, e.g. alignment
• CPC Class Codes: H02J 7/00036 Charger exchanging data with battery
• CPC Class Codes: H02J 7/00047 with provisions for charging different types of batteries
• CPC Class Codes: H04B 5/266 One coil at each side, e.g. with primary and secondary coils
• CPC Class Codes: H04B 5/72 for local intradevice communication
• CPC Class Codes: H04B 5/79 for data transfer in combination with power transfer

Abstract

A charger includes a planar charging surface, a magnet, a charging circuit and a data circuit. The charging surface has at least two data contact tracks for electrical connection to data contacts of a chargeable device when disposed on the planar charging surface. The data circuit includes the data tracks, a data port, and electrical connection between the data contact tracks and the data port. The charging circuit has a charging feature configured to apply a driving current to the chargeable device through the charging surface. The magnet is configured to align the chargeable device such that the data contacts of the chargeable device align with the data contact tracks. When aligned via the magnet, the data contacts of the chargeable device contact the data contact tracks of the charging surface, thereby permitting data transfer between the chargeable device and an external device connected to the data port.

Claims

1. A charger comprising:

a planar charging surface comprising at least two data contact tracks for electrical connection to data contacts of a chargeable device when disposed on the planar charging surface;

a magnet, having a doughnut configuration;

a charging circuit; and

a data circuit comprising the data contact tracks, a data port, and electrical connectors between the data contact tracks and the data port, wherein;

the charging circuit comprises a charging feature configured to apply a driving current to the chargeable device through the charging surface,

the magnet is configured to magnetically interact with a magnet receptor member of the chargeable device in a manner urging lateral alignment of the chargeable device to a position such that the alignment causes the data contacts of the chargeable device to laterally align with the data contact tracks, and

when aligned via the magnet, the data contacts of the chargeable device contact the data contact tracks of the charging surface, thereby permitting data transfer between the chargeable device and an external device connected to the data port; and

a radio frequency (RF) reader for obtaining, from a RF tag in the chargeable device, a charging rate and a charging limit of the chargeable device.

2. The charger of claim 1, wherein the magnet is further configured to align the chargeable device such that a charging feature of the chargeable device aligns with the charging feature of the charger.

3. The charger of claim 1, wherein the charging feature of the charger comprises an inductive coil.

4. The charger of claim 1, wherein the data circuit and the charging circuit are spaced to keep interference below a predefined threshold.

5. The charger of claim 4, wherein the predefined threshold is based on a predefined radiofrequency interference exposure potential defining a tolerance limit for human exposure to a radiofrequency electromagnetic field.

6. The charger of claim 5, wherein the data circuit and the charging circuit are spaced apart by a predetermined distance so as to mitigate magnetic interference due to inductive charging.

7. The charger of claim 6, wherein the predetermined distance is at least 1.5 inches.

8. The charger of claim 1, wherein the data contact tracks are recessed with respect to the charging surface.

9. The charger of claim 1, wherein the magnet defines an alignment point, and wherein the data contact tracks are curved, to allow the data contacts of the chargeable device to align with the data contact tracks in a variety of different rotational positions about the alignment point.

10. The charger of claim 9, wherein the charging feature of the charger comprises an inductive coil centered about the alignment point.

11. The charger of claim 1, comprising a casing, wherein the magnet and the charging feature of the charger are within the casing, and the charging surface defines a portion of the casing.

12. A portable chargeable device comprising:

one or more electronic components;

a rechargeable battery for supply power to operate the one or more electronic components;

a battery charging circuit coupled to the battery;

a charging feature for receiving a driving current from a charging circuit of a charger to drive the battery charging circuit;

a magnetic receptor, wherein the magnetic receptor has a doughnut-shaped configuration;

a housing of a portable form factor enclosing one or more electronic components, the battery, the charging circuit, and the charging feature, wherein;

the housing comprises data contacts on an outer surface of the housing;

the data contacts are connected via lines to a data port of the one or more electronic components;

the magnetic receptor is configured to magnetically interact with the charger in a manner urging lateral alignment of the portable chargeable device and the housing to a position causing alignment of the data contacts of the housing with data contact tracks of the charger; and

when aligned, the data contacts contact the data contact tracks of the charger, permitting data transfer between the chargeable device and the charger; and

a radio frequency (RF) tag for providing, to a RF reader in the charger, a charging rate and a charging limit of the chargeable device.

13. The chargeable device of claim 12, wherein:

the magnetic receptor is further configured to interact with a magnet of the charger such that the magnetic field also urges alignment of a charging feature of the chargeable device with a charging feature of the charger; and

when aligned, the charging feature of the chargeable device communicates with the charging feature of the charger, permitting application of a driving current to the charging circuit of the charger.

14. The chargeable device of claim 12, wherein the charging feature comprises an inductive coil.

15. The chargeable device of claim 12, wherein the charging rate is set according to device specifications.

16. A cover for a chargeable device, comprising:

data contacts on an exterior surface of the cover; and

a magnetic receptor, wherein the magnetic receptor has a doughnut-shaped configuration;

the data contacts configured for connection to a data port of an electronic component of the chargeable device,

the magnetic receptor configured to magnetically interact with a magnet of a charger in a manner urging lateral alignment of the chargeable device with the cover to a position such that the alignment causes alignment of the data contacts of the cover with data contact tracks of the charger; and

when aligned, the data contacts contact the data contact tracks, permitting data transfer between the chargeable device and the charger; and

a radio frequency (RF) tag for providing, to a RF reader in the charger, a charging rate and a charging limit of the chargeable device.

17. The cover of claim 16, comprising an inductive coil configured for electrical connection to a battery of the chargeable device.