Mobile Device Case with Fast Charging Battery Pack

• US 20150236538A1
• Filed: 11/17/2014
• Published: 08/20/2015
• Est. Priority Date: 11/15/2013
• Status: Abandoned Application

• Current Assignee: UNU Electronics Inc.
• Original Assignee: UNU Electronics Inc.
• Inventors: Cai, Sen, Zhang, Chengping, Mao, Mingquan, Wang, Jinsong, Qin, Chuanbao
• Application Number:
  US14/543,693
• Publication Number:
  US 20150236538A1
• Time in Patent Office: Days
• US Class Current: 1/1
• CPC Class Codes: H01M 10/00 Secondary cells; Manufacture thereof
• CPC Class Codes: H01M 10/052 Li-accumulators
• CPC Class Codes: H01M 10/44 Methods for charging or discharging circuits for charging H02J7/00
• 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
• CPC Class Codes: Y02E 60/10 Energy storage using batteries

Abstract

A fast charging mobile battery pack is usable to accept approximately 12V DC or between approximately 100V-240V AC and manage the voltage and current levels to rapidly charge a battery of a portable electronic device and/or one or more battery cells within the fast charging mobile battery pack. The fast charging portable battery pack may additionally include multiple output ports to provide different voltage and/or current levels to desired portable electronic devices.

Claims

1. A fast charging portable battery pack includes:

a charging circuit;

a battery module, the battery module containing a protection circuit; and

an output voltage stabilization circuit.

2. The fast charging portable battery pack of claim 1, further including a digital display circuit wherein the charging circuit and the voltage stabilization circuit are each couple at least indirectly to the digital display circuit.

3. The fast charging portable battery pack of claim 2, wherein the digital display circuit is further connected to a current and voltage acquisition chip.

4. The fast charging portable battery pack of claim 2, further comprising a control processor.

5. The fast charging portable battery pack of claim 1, wherein the charging circuit is connected to at least one of a standard AC wall outlet or an automotive 12 V DC outlet.

6. The fast charging portable battery pack of claim 1, wherein the battery module includes one or more lithium polymer battery cells, each lithium polymer battery cell having a voltage ranging between approximately 3.5 and 5.5V.

7. The fast charging portable battery pack of claim 6, wherein the one or more lithium polymer battery cells include at least two battery cells that are connected in series to each other.

8. The fast charging portable battery pack of claim 6, wherein the one or more lithium polymer battery cells include at least two battery cells that receive a minimum of 2 A of current when being recharged.

9. The fast charging portable battery pack of claim 8, wherein an input voltage is stepped up to a higher voltage to match a rated voltage of the battery module.

10. The fast charging portable battery pack of claim 8, wherein an input voltage is stepped down to a lower voltage to match a rated voltage of the battery module.

11. A method of charging a portable electronic device comprising:

connecting a portable battery pack to an electrical source;

charging the portable battery pack from the electrical source; and

charging the portable electronic device from the portable battery pack;

wherein, the portable battery pack is configured to charge at a faster rate than the portable electronic device.

12. The method of claim 11, further comprising disconnecting the portable battery pack from the electrical source before charging the portable electronic device from the portable battery pack.

13. The method of claim 12, wherein the portable electronic device is connected to the portable battery pack while the portable battery pack is being charged from the electrical source.

14. The method of claim 13, further comprising charging the portable electronic device from the portable battery pack while the portable battery pack is being charged from the electrical source.

15. The method of claim 11, wherein the electrical source is a 12V DC power source.

16. The method of claim 15, wherein the 12V DC power source is an automobile battery.

17. The method of claim 11, wherein the electrical source is a 120V AC wall outlet.

18. The method of claim 11, wherein charging the portable battery pack from the electrical source further comprising providing an electrical current to the portable battery pack of approximately 2 A.

19. The method of claim 11, wherein charging the portable battery pack from the electrical source further comprising providing an electrical current to the portable battery pack of more than 2 A.

20. A method of charging a portable electronic device comprising:

connecting a portable battery pack to an electrical source, the battery pack comprising one or more lithium ion cells;

charging the portable battery pack from the electrical source;

connecting the portable battery pack to a portable electronic device, the portable electronic device having a rechargeable battery; and

providing an electrical current to the portable electronic device from the portable battery pack to charge the rechargeable battery of the portable electronic device;

wherein charging the portable battery pack comprises providing an electrical current of at least 2 A to the one or more lithium ion cells; and

wherein charging the portable battery pack is conducted at a faster rate of charge than charging the rechargeable battery of the portable electronic device.