Electronic device and method for charging battery based on a plurality of power sources

Patent metadata

Field	Value
Publication number	US-10069327-B2
Application number	US-201615235674-A
Country	US
Kind code	B2
Filing date	Aug 12, 2016
Priority date	Aug 28, 2015
Publication date	Sep 4, 2018
Grant date	Sep 4, 2018

Abstract

An electronic device and a method for charging a battery of the electronic device are provided. The electronic device includes a housing; a battery disposed within the housing; a first interface electrically or electromagnetically connected to a first external power source; a second interface electrically or electromagnetically connected to a second external power source; and a circuit electrically connected to the battery, the first interface, and the second interface, wherein the circuit changes a first voltage output from the first interface based on a second voltage output from the second interface, changes a first current output from the first interface based on a second current output from the second interface, and charges the battery based on the changed first current and second current.

First claim

What is claimed is:

1. An electronic device, comprising:
a housing;
a battery disposed within the housing;
a first interface electrically connected to a first external power source;
a second interface electrically connected to a second external power source; and
a circuit electrically connected to the battery, the first interface, and the second interface,
wherein the circuit changes a first voltage output from the first interface based on a second voltage output from the second interface, changes a first current output from the first interface based on a second current output from the second interface, and charges the battery based on the changed first current and second current.

2. The electronic device of claim 1 , wherein the changed first voltage is substantially the same as the second voltage.

3. The electronic device of claim 1 , wherein the circuit detects reduction of the second current and reduces the first current based on the detection.

4. The electronic device of claim 1 , wherein the first power source outputs the first voltage and the first current based on power wirelessly received.

5. The electronic device of claim 1 , further comprising a connector connected to the second external power source,
wherein the electronic device outputs the second voltage and the second current based on power received from the second external power source through the connector.

6. The electronic device of claim 1 , wherein the circuit steps up the first voltage, if the first voltage is lower than the second voltage and steps down the first voltage, if the first voltage is at least equal to the second voltage.

7. The electronic device of claim 1 , wherein the circuit receives the second voltage and the second current from the second interface, reduces the second current at a time point at which a voltage of the battery becomes a predetermined voltage, and reduces the first current according to the reduced second current.

8. The electronic device of claim 1 , wherein the circuit does not receive power from the first external power source through the first interface by a predetermined time, when the second external power is input through the second interface while the first external power is input through the first interface.

9. The electronic device of claim 1 , wherein the first external power source and the second external power source are a wireless charge device or a wired charge device.

10. A method of charging a battery of an electronic device, the method comprising:
detecting an input of first external power from a first external power source and second external power from a second external power source;
changing a first voltage output by the first external power source based on a second voltage input by the second external power source;
changing a first current output by the first external power source based on a second current input by the second external power source; and
charging the battery based on the first current and the second current.

11. The method of claim 10 , wherein changing a first voltage output by the first external power source based on a second voltage input by the second external power source comprises changing the first voltage to be substantially the same as the second voltage.

12. The method of claim 10 , wherein changing a first current output by the first external power source based on a second current input by the second external power source comprises:
detecting reduction of the second current based on information of the battery; and
reducing the first current, as the second current reduces.

13. The method of claim 12 , wherein detecting reduction of the second current based on information of the battery comprises reducing the second current, when a voltage of the battery is a full charging voltage.

14. The method of claim 10 , wherein detecting an input of first external power and second external power comprises outputting the first voltage and the first current based on power received by wireless from the first external power source.

15. The method of claim 10 , wherein detecting an input of first external power and second external power comprises outputting the second voltage and the second current based on power received from the second external power source.

16. The method of claim 10 , wherein changing a first voltage output by the first external power source based on a second voltage input by the second external power source comprises:
stepping up, by the circuit, if the first voltage is lower than the second voltage, the first voltage; and
setting the changed first voltage to be substantially the same as the second voltage.

17. The method of claim 10 , wherein changing a first voltage output by the first external power source based on a second voltage input by the second external power source comprises:
stepping down, by the circuit, if the first voltage is at least equal to the second voltage, the first voltage; and
setting the changed first voltage to be substantially the same as the second voltage.

18. The method of claim 10 , wherein detecting an input of first external power and second external power comprises controlling not to receive first external power from the first external power source by a predetermined time through the first interface, when the second external power is input through a second interface while the first external power is input through a first interface.

19. An electronic device, comprising:
a housing;
a battery disposed within the housing;
a first interface electrically connected to a first external power source;
a second interface electrically connected to a second external power source; and
a circuit electrically connected to the battery, the first interface, and the second interface,
wherein the circuit comprises:
a battery charge circuit having one side connected in series to the second interface and the other side connected in series to the battery;
a current/voltage conversion circuit having one side connected in series to the first interface and the other side connected in series to the battery charge circuit; and
a comparison circuit located between the second interface and the current/voltage conversion circuit and having one side connected in series to the second interface and the other side connected in series to the current/voltage conversion circuit.

20. The electronic device of claim 19 , wherein the current/voltage conversion circuit changes a first voltage output from the first interface based on a second voltage output from the second interface and changes a first current output from the first interface based on a second current output from the second interface.

Assignees

• Samsung Electronics Co Ltd
• Samsung Electronics Co Ltd

Inventors

• LEE Myungkee
• Kim Joohan
• Kim Jinman
• Kim Hoyeon
• Yang Chulhyung
• Lee Jiwoo

Classifications

• H02J7/96

  in response to battery voltage · CPC title

• H04B7/00

  Radio transmission systems, i.e. using radiation field (H04B10/00, H04B15/00 take precedence) · CPC title

• H02J7/045

  Electricity · mapped topic

• H02J50/10 Primary

  using inductive coupling · CPC title

• H02J7/025 Primary

  Electricity · mapped topic