Method and apparatus for transferring electrical power in an electronic device

• US 20090111531A1
• Filed: 10/24/2007
• Published: 04/30/2009
• Est. Priority Date: 10/24/2007
• Status: Active Grant

• Current Assignee: Nokia Technologies Oy (Nokia Corporation)
• Original Assignee: Nokia Corporation
• Inventors: Li, Pei, Cui, Wei
• Granted Patent: US 7,962,186 B2
• Time in Patent Office: Days
• US Class Current: 455/572
• CPC Class Codes: H01Q 1/243 with built-in antennas
• CPC Class Codes: H02J 50/20 using microwaves or radio frequency waves
• CPC Class Codes: H04B 1/1607 Supply circuits converters H02M; filters therefor H02M1/14; voltage stabilisers G05F1/46
• CPC Class Codes: H04M 1/0208 characterized by the relative motions of the body parts
• CPC Class Codes: H04M 1/0214 Foldable telephones, i.e. with body parts pivoting to an open position around an axis parallel to the plane they define in closed position combined with translation movement H04M1/0235
• CPC Class Codes: H04M 1/0225 Rotatable telephones, i.e. the body parts pivoting to an open position around an axis perpendicular to the plane they define in closed position combined with translation movement H04M1/0235
• CPC Class Codes: H04M 1/0235 Slidable or telescopic telephones, i.e. with a relative translation movement of the body parts; Telephones using a combination of translation and other relative motions of the body parts

Abstract

A short-range wireless power transmission scheme is used between two movably or detachably coupled device parts in an electronic device. In a device, such as a foldable or slidable mobile phone, both device parts have some electronic components that require electronic power but only one part has a power source. For example, a phone cover has a display but there is no power source in the phone cover. A receiver can be implemented in the cover to receive microwaves from a transmitter in the phone body. The receiver and the transmitter can be arranged such that, the antennas are placed as close to each other as possible in order to achieve best efficiency of energy and data transfer. If one pair of antenna is not enough, multiple antennas or antenna arrays can be used for this purpose. Different antenna pairs can be configurable for different purposes.

Claims

1. A method comprising:

providing a first electronic component in a first device part of an electronic device; and

providing a second electronic component in a second device part of the electronic device, wherein the first device part is mechanically coupled to the second device part, and the electronic device is operable in a first configuration and in a second configuration, such that

when the electronic device is operated in the first configuration, the second electronic component is configured for transmitting electromagnetic waves and the first electronic component is located adjacent to the second electronic component at a first distance for receiving the electromagnetic waves, and

when the electronic device is operated in the second configuration, the first electronic component is spaced from the second electronic component at a second distance greater than the first distance.

2. The method of claim 1, further comprising:

providing a charge storage device in the first device part, wherein the charge storage device is electrically coupled to the first electronic component so as to allow the first electronic component to charge the charge storage device.

3. The method of claim 1, wherein when the electronic device is operated in the second configuration, the second electronic component is configured for transmitting data.

4. The method of claim 3, further comprising:

providing a third electronic component in the first device part for receiving the data in a wireless fashion.

5. The method of claim 1, further comprising:

providing a third electronic component in the first device part; and

providing a fourth electronic component in the second device part for transmitting data to the third electronic component in a wireless fashion.

6. The method of claim 1, wherein when the electronic device is operated in the second configuration, the second electronic component is configured for transmitting and receiving communication signals to another electronic device.

7. The method of claim 3, wherein the first electronic component comprises a first antenna, and the second electronic component comprises a second antenna, said method further comprising:

providing a third antenna in the electronic device for transmitting and receiving communication signals.

8. The method of claim 1, wherein the second electronic component comprises a multi-frequency antenna, wherein

when the electronic device is operated in the first configuration, the multi-frequency antenna is configured for transmitting the electromagnetic waves in a first frequency range;

and

when the electronic device is operated in the second configuration, the multi-frequency antenna is configured for transmitting and receiving communication signals in a second frequency range different from the first frequency range.

9. The method of claim 8, wherein the first frequency range is in a millimeter-wave frequency range and the second frequency range is in a microwave frequency range.

10. The method of claim 1, wherein the first electronic component comprises a radio-frequency identification device.

11. An apparatus comprising:

a first apparatus part comprising a first electronic component; and

a second apparatus part mechanically coupled to the first apparatus part, the second apparatus part comprising a second electronic component, wherein the apparatus is operable in a first configuration and in a second configuration, such that

when the apparatus is operated in the first configuration, the second electronic component is configured for transmitting electromagnetic waves and the first electronic component is located adjacent to the second electronic component at a first distance for receiving the electromagnetic waves, and

when the apparatus is operated in the second configuration, the second electronic component is spaced from the second electronic component at a second distance greater than the first distance.

12. The apparatus of claim 11, further comprising:

a charge storage device located in the first apparatus part, wherein the charge storage device is electrically coupled to the first electronic component so as to allow the first electronic component to charge the charge storage device.

13. The apparatus of claim 11, wherein when the apparatus is operated in the second configuration, the second electronic component is configured for transmitting data.

14. The apparatus of claim 13, further comprising:

a third electronic component located in the first apparatus part for receiving the data in a wireless fashion.

15. The apparatus of claim 13, wherein when the apparatus is operated in the second configuration, the first electronic component is configured for receiving the data.

16. The apparatus of claim 11, wherein the first electronic component comprises a first antenna, and the second electronic component comprises a second antenna, said apparatus further comprising:

a third antenna for transmitting and receiving communication signals.

17. The apparatus of claim 11, wherein the second electronic component comprises a multi-frequency antenna, wherein

when the apparatus is operated in the first configuration, the multi-frequency antenna is configured for transmitting the electromagnetic waves in a first frequency range;

and

when the apparatus is operated in the second configuration, the multi-frequency antenna is configured for transmitting and receiving communication signals in a second frequency range higher than the first frequency range.

18. The apparatus of claim 17, wherein the first frequency range is in a microwave frequency range and the second frequency range is in a radio frequency range.

19. The apparatus of claim 12, when the apparatus is operated in the second configuration, the second electronic component is configured for transmitting data, said apparatus further comprising:

an electronic module located in the first apparatus part, electrically coupled to the charge storage device for receiving electrical power from the charge storage device; and

a third electronic component located in the first apparatus part, configured for wirelessly receiving the data, wherein the third electronic component is operatively coupled to the electronic module for providing the data to the electronic module.

20. The apparatus of claim 12, further comprising:

a display located in the first apparatus part electrically coupled to the charge storage device for receiving electrical power from the charge storage device;

a third electronic component located in the second apparatus part, the third electronic component configured for transmitting data; and

a fourth electronic component located in the first apparatus part, electrically coupled to the display, wherein the fourth electronic component is configured for wirelessly receiving the data for providing the data to the display.

21. The apparatus of claim 11, wherein the first apparatus part has a first end and an opposing second end, the first apparatus end rotatably connected to the second apparatus part, the second apparatus part having a surface, wherein when the apparatus is operated in the first configuration, both the first end and the second end of the first apparatus are located adjacent to the surface of the second apparatus, and when the apparatus is operated in the second configuration, the second end of the first apparatus is spaced from the surface of the second apparatus part.

22. The apparatus of claim 21, wherein the first electronic component is located near the first end or the second end of the first apparatus part.

23. The apparatus of claim 11, comprising a mobile terminal.

24. The apparatus of claim 11, wherein the first apparatus part has an end section and the second apparatus part has a first end and an opposing second end, the first apparatus part slidably coupled to the second apparatus part, and wherein when the apparatus is operated in the first configuration, the end section of the first apparatus part is located adjacent to the first end of the second apparatus part, and when the apparatus is operated in the second configuration, the end section of the first apparatus part is located away from the first end of the second apparatus part toward the second end of the second apparatus part.

25. An apparatus operable in a first configuration and in a second configuration, said apparatus comprising:

a first apparatus part mechanically coupled to a second apparatus part;

an electronic module located in the first apparatus part;

a charge storage device located in the first apparatus part, electrically coupled to the electronic module for providing electrical power to the electronic module;

a receiver located in the first apparatus part, electrically coupled to the charge storage device; and

a transmitter located in the second apparatus part, wherein

when the apparatus is operated in the first configuration, the transmitter is configured for transmitting electromagnetic waves and the receiver is located adjacent to the transmitter at a first distance for receiving the electromagnetic waves for charging the charge storage device; and

when the apparatus is operated in the second configuration, the receiver is located spaced from the transmitter at a second distance greater than the first distance, and the transmitter is configured for transmitting data for providing the data to the electronic module in a wireless fashion.