Portable battery charger

• US 20070063669A1
• Filed: 09/21/2005
• Published: 03/22/2007
• Est. Priority Date: 09/21/2005
• Status: Abandoned Application

• Current Assignee: Voxred International LLC
• Original Assignee: Voxred International LLC
• Inventors: Keating, Michael
• Application Number:
  US11/232,448
• Publication Number:
  US 20070063669A1
• Time in Patent Office: Days
• US Class Current: 320/107
• CPC Class Codes: H02J 7/0042 characterised by the mechanical construction
• CPC Class Codes: H02J 7/342 The other DC source being a battery actively interacting with the first one, i.e. battery to battery charging with circuits for polarity protection H02J7/0034

Abstract

Disclosed is a portable charger adapted for use with wireless devices. Integrated circuitry controls the amount of current charge delivered to the primary power source of a wireless device through an adaptor. The current charge is delivered by a power source located within an attractive housing. A light emitting diode coupled to the integrated circuit indicates whether the wireless device is actively being charged.

Claims

1. A battery charger comprising:

a housing;

a power source disposed within said housing;

an integrated circuit disposed within said housing in electrical contact with said power source;

wherein said integrated circuit comprises;

at least one light emitting diode;

a differential op amp;

a DC-DC converter;

a comparator; and

a sensor that monitors current flow;

a means for attaching said charger to a wireless device which is in electrical contact with said integrated circuit such that a charge current is delivered to said wireless device.

2. The battery charger of claim 1 wherein said light emitting diode indicates when said wireless device is being charged.

3. The battery charger of claim 1 wherein said sensor prohibits excess charge current to be delivered to said wireless device.

4. The battery charger of claim 1 wherein said boost converter is a step-up or SEPIC DC-DC converter.

5. The battery charger of claim 1 wherein said sensor is a resistor.

6. The battery charger of claim 4 wherein said sensor resistor is 1.0 ohms.

7. The battery charger of claim 1 wherein said housing is cylindrically shaped.

8. The battery charger of claim 1 wherein said wireless device is comprised of at least one selected from the group consisting of a cellular telephone, a portable digital assistant, a digital media storage device, a digital media playback device, a digital media transmitting device, a digital media receiving device, an iPod®

, and a blackberry®

.

9. The battery charge of claim 1 wherein said attaching means is an adaptor.

10. The battery charger of claim 1 wherein said power source is an alkaline battery.

11. A method of charging a wireless device comprising the steps of:

providing a battery charger comprising;

a housing;

a power source disposed within said housing;

an integrated circuit disposed within said housing in electrical contact with said power source;

wherein said integrated circuit comprises;

at least one light emitting diode;

a differential op amp;

a boost converter;

a push-pull comparator; and

a sensor that monitors current flow;

attaching said battery charger to a wireless device;

wherein a means for attaching said charger to a wireless device is in electrical contact with

said integrated circuit such that a charge

current is delivered to said wireless device; and

charging said wireless device.

12. The method of claim 11 wherein said light emitting diode indicates when said wireless device is being charged.

13. The method of claim 11 wherein said sensor prohibits excess charge current to be delivered to said wireless device.

14. The method of claim 11 wherein said boost converter is a step-up DC-DC converter.

15. The battery charger of claim 11 wherein said sensor is a resistor.

16. The method of claim 15 wherein said sensor resistor is 1.0 ohms.

17. The method of claim 11 wherein said housing is cylindrically shaped.

18. The method of claim 11 wherein said wireless device is comprised of at least one selected from the group consisting of a cellular telephone, a portable digital assistant, a digital media storage device, a digital media playback device, a digital media transmitting device, a digital media receiving device, an iPod®

, and a blackberry®

.

19. The method of claim 11 wherein said attaching means is an adaptor.

20. The method of claim 11 wherein said power source is an alkaline battery.

21. A wireless device charging system comprising:

a battery charger comprising;

a housing;

a power source disposed within said housing;

an integrated circuit disposed within said housing in electrical contact with said power source comprising;

at least one light emitting diode;

a differential op amp;

a boost or SEPIC DC-DC converter;

a comparator; and

a sensor that monitors current flow;

a means for attaching said charger to a wireless device which is in electrical contact with said integrated circuit such that a charge current is delivered to said wireless device; and

a wireless device comprising at least one rechargeable power source.

22. The system of claim 21 wherein said sensor prohibits excess charge current to be delivered to said wireless device.

23. The system of claim 21 wherein said wireless device is comprised of at least one selected from the group consisting of a cellular telephone, a portable digital assistant, a digital media storage device, a digital media playback device, a digital media transmitting device, a digital media receiving device, an iPod®

, and a blackberry®

.

24. The system of claim 21 wherein said attaching means is an adaptor.

25. The system of claim 21 wherein said power source is an alkaline battery.

26. The system of claim 21 wherein said rechargeable power source is an alkaline battery.