Alternating current direct current adapter with wireless charging

• US 9,490,648 B2
• Filed: 04/30/2012
• Issued: 11/08/2016
• Est. Priority Date: 04/30/2012
• Status: Active Grant

• Current Assignee: Hewlett-Packard Development Company, L.P. (HP Inc.)
• Original Assignee: Hewlett-Packard Development Company, L.P. (HP Inc.)
• Inventors: Sookprasong, Jamie, Atkinson, Lee Warren, Haren, Edgar Diego
• Primary Examiner(s): Parihar, Suchin
• Application Number:
  US13/460,138
• Publication Number:
  US 20130285601A1
• Time in Patent Office: 1,653 Days
• Field of Search: 320/108
• US Class Current: 1/1
• CPC Class Codes: H02J 2207/30 Charge provided using DC bus or data bus of a computer
• CPC Class Codes: H02J 5/00 Circuit arrangements for transfer of electric power between ac networks and dc networks H02J3/36 takes precedence
• CPC Class Codes: H02J 50/005 Mechanical details of housing or structure aiming to accommodate the power transfer means, e.g. mechanical integration of coils, antennas or transducers into emitting or receiving devices
• CPC Class Codes: H02J 50/10 using inductive coupling
• CPC Class Codes: H02J 50/12 of the resonant type
• CPC Class Codes: H02J 50/402 the two or more transmitting or the two or more receiving devices being integrated in the same unit, e.g. power mats with several coils or antennas with several sub-antennas
• CPC Class Codes: H02J 7/00 Circuit arrangements for charging or depolarising batteries or for supplying loads from batteries
• CPC Class Codes: H02J 7/0044 specially adapted for holding portable devices containing batteries H02J7/0045 takes precedence
• CPC Class Codes: H02J 7/02 for charging batteries from ac mains by converters

Abstract

A charging device that includes an alternating current (AC) direct current (DC) adapter and a wireless charger. In one implementation the charging device combines an AC/DC adapter and a wireless charger into a same housing.

Claims

1. An apparatus, comprising:

a housing defining an internal compartment to house power circuitry that converts alternating current (AC) power input to direct current (DC) power output, and a wireless charging component that wirelessly provides power to a first device;

an AC cable to connect to a power source and provide the AC power input to the power circuitry;

a DC cable to connect to a second. device and provide the DC power output from the power circuitry within the housing to the second device, wherein the second device is external to the apparatus; and

a power control circuit to determine when the AC power cable does not provide the AC power input to the power circuitry, and in response, direct the DC power cable to provide DC power input to the power circuitry from a power source associated with the second device.

2. The apparatus of claim 1, further comprising:

a charging surface located on a surface of the housing, wherein the wireless charging component wirelessly provides power to the first device via electromagnetic induction when the first device is engaged at the charging surface.

3. The apparatus of claim 1, wherein the DC power cable is retractable into the internal compartment.

4. The apparatus of claim 1, further comprising,:

a universal serial bus (USB) port to provide the DC power output to a third device connected thereto.

7. The apparatus of claim 1, wherein the power control circuit is to send a request to the second device for DC power.

5. A charging method, comprising:

upon connection of a first device to a charging. device to receive power from the charging device via a DC cable, and when no power input is received by the charging device via an AC cable, transmitting a request for power to the first device;

in response to the request, receiving DC power input at the charging device from the first device via the DC cable, wherein receiving the DC power input at the charging device comprises receiving power communicated via the DC cable from a location external to the charging device to a location inside the charging device; and

transmitting the received DC power to a wireless charging, component.

6. The charging method of claim 5, further comprising:

wirelessly providing power to a second device via the wireless charging component in response to engagement of the wireless charging component by the second device.

8. The charging method of claim 5, further comprising:

providing a first portion of the received DC power to a first wireless device in response to engagement al the wireless charging component by the first wireless device.

9. The charging method of claim 5, further comprising:

providing a second portion of the received DC power to a second wireless device in response to engagement of the wireless charging component by the second wireless device.

10. A charging method, comprising:

upon connection of a first device to a charging device to receive power from the charging device via a DC cable, and when no power input is received by the charging device via an AC cable, transmitting a request for power to the first device;

in response to the request, receiving DC power input at the charging device from the first device via the DC cable;

transmitting the received DC power to a wireless charging component;

providing a first portion of the received DC power to a first wireless device in response to engagement of the wireless charging component by the first wireless device; and

providing a second portion of the received DC power to a second wireless device in response to engagement of the wireless charging component by the second wireless device.