Smart power delivery system and related method

• US 9,941,808 B2
• Filed: 10/02/2015
• Issued: 04/10/2018
• Est. Priority Date: 01/26/2010
• Status: Active Grant

• Current Assignee: Avago Technologies International Sales Pte Limited (Broadcom, Inc.)
• Original Assignee: Avago Technologies General IP PTE Limited (Broadcom, Inc.)
• Inventors: Walley, John, Hulvey, Robert
• Primary Examiner(s): ALAM, MIRZA F
• Application Number:
  US14/873,984
• Publication Number:
  US 20160043650A1
• Time in Patent Office: 921 Days
• Field of Search: 340 1323, 3406362, 320103, 320107, 320108, 320137, 320150, 320119, 320124, 320134, 307 29, 307 31, 307 34, 307 38, 307104, 307126, 455573
• CPC Class Codes: G06F 1/26 Power supply means, e.g. regulation thereof for memories G11C
• CPC Class Codes: H02J 2207/20 Charging or discharging characterised by the power electronics converter
• CPC Class Codes: H02J 50/12 of the resonant type
• CPC Class Codes: H02J 50/80 involving the exchange of data, concerning supply or distribution of electric power, between transmitting devices and receiving devices
• CPC Class Codes: H02J 7/0047 with monitoring or indicating devices or circuits
• CPC Class Codes: H02J 7/02 for charging batteries from ac mains by converters
• CPC Class Codes: H02M 7/003 Constructional details, e.g. physical layout, assembly, wiring or busbar connections

Abstract

According to one disclosed embodiment, a smart power delivery system includes a power conversion unit having a communication module and a power management module that can convert mains power into an optimized voltage and limited current used to power an electronic device. In one embodiment, a power conversion unit can optimize an output voltage by communicating with a connected electronic device and exchanging parameters representing desired characteristics of the output voltage. In one embodiment, an electronic device receives power from a power conversion unit through a wired power conduit. In another embodiment, an electronic device receives power from a power conversion unit through a wireless power conduit. In one embodiment, an optimal voltage is selected after negotiation between multiple electronic devices and a power conversion unit.

Claims

1. A smart power delivery system comprising:

a power conversion unit (PCU) configured to draw AC power through a mains adapter, the PCU including wireless communications circuitry configured to wirelessly communicate with a first electronic device and a second electronic device, and a power management module (PMM) that is configured to operate in a smart mode in which the PMM uses wireless communications to determine power requirements provided by the first electronic device and the second electronic device; and

a wireless power conduit configured to convey power from the PCU to the first electronic device according to the power requirements of the first electronic device, and simultaneously convey power to the second electronic device according to the power requirements of the second electronic device, wherein

when the PMM is in the smart mode, the PMM partitions a total output power according to the power requirements of the first electronic device and the second electronic device, and

when the second electronic device does not offer to lower power requirements below a standard power requirement for the second electronic device, the PMM determines whether the first electronic device is willing to defer or reduce power requirements and consequently sets a particular partitioning approach that satisfies demands of both the first electronic device and the second electronic device, or switches one electronic device to a safe mode while satisfying power requirements of the other electronic device.

2. The smart power delivery system of claim 1, wherein the power conduit further comprises a wired power conduit.

3. The smart power delivery system of claim 1, wherein the wireless power conduit being compatible with at least one of Bluetooth, WiFi and near field communication (NFC).

4. The smart power delivery system of claim 1, wherein the communication circuitry is configured to form a communication channel over the wireless power conduit.

5. The smart power delivery system of claim 1, wherein the communication circuitry is configured to form a wireless communication channel separate from the wireless power conduit.

6. The smart power delivery system of claim 1, wherein the PMM is configured to reply to receiving a voltage parameter from the first electronic device by providing to the first electronic device power at a voltage that conforms to the voltage parameter and is different than an initially provided voltage.

7. The smart power delivery system of claim 1, wherein:

the wireless power conduit includes a separate wireless path that conveys power wirelessly to the second electronic device.

8. The smart power delivery system of claim 7, wherein the separate wireless path includes an inductive link between the smart power deliver system and the first electronic device.

9. The smart power delivery system of claim 6, wherein the PMM provides an initial output voltage to the first electronic device and after receiving a second voltage parameter for the second electronic device changes the initial output voltage to a different voltage.

10. A power conversion unit (PCU) for use in a smart power delivery system, the PCU comprising:

a power conversion unit (PCU) configured to draw AC power through a mains adapter, the PCU including wireless communications circuitry configured to wirelessly communicate with a first electronic device and a second electronic device, and a power management module (PMM) that is configured to operate in a smart mode in which the PMM identifies via wireless communications power requirements of the first electronic device and of the second electronic device, wherein

the PCU conveys power via a wireless power conduit to the first electronic device according to the power requirements of the first electronic device, and simultaneously conveys power to the second electronic device according to the power requirements of the second electronic device,

when the PMM is in the smart mode, the PMM partitions a total output power according to power demands of the first electronic device and the second electronic device, and

when the second electronic device does not offer to lower power requirements below a standard power requirement for the second electronic device, the PMM determines whether the first electronic device is willing to defer or reduce power requirements and consequently sets a particular partitioning approach that satisfies demands of both the first electronic device and the second electronic device, or switches one electronic device to a safe mode while satisfying power requirements of the other electronic device.

11. The PCU of claim 10, wherein the PMM communicates with the first electronic device over a wireless communication channel that complies with a standard wireless communications protocol.

12. The PCU of claim 10, wherein the PMM is configured to communicate with the first electronic device and receive a first voltage parameter, and change the first output voltage to conform to the first voltage parameter.

13. The PCU of claim 12, wherein the first voltage parameter is a first output voltage level set by the first voltage parameter provided by the first electronic device.

14. The PCU of claim 12, wherein the first voltage parameter identifies a first output voltage accuracy required by the first electronic device.

15. The PCU of claim 12, wherein the first voltage parameter is an output noise sensitivity of the first electronic device.

16. The PCU of claim 12, wherein the first voltage parameter is a tolerance for transients in the first output voltage provided to the first electronic device.

17. A method for delivering power to a first electronic device and a second electronic device with a different power requirement, the method comprising:

detecting a connection between a power conversion unit (PCU) configured to draw AC power through a mains adapter and the first electronic device, the PCU including wireless communication circuitry and a power management module (PMM);

providing power to the first electronic device at an initial voltage level over a wireless power conduit;

receiving over a communication link a different operating voltage of the first electronic device;

providing the different operating voltage to the first electronic device;

providing another operating voltage to the second electronic device, the another operating voltage being different than the different operating voltage; and

when the PMM is in a smart mode, partitioning a total output power according to power demands of the first electronic device and the second electronic device, and

when the second electronic device does not offer to lower power requirements below a standard power requirement for the second electronic device, the PMM determines whether the first electronic device is willing to defer or reduce power requirements and consequently sets a particular partitioning approach that satisfies demands of both the first electronic device and the second electronic device, or switches one electronic device to a safe mode while satisfying power requirements of the other electronic device.

18. The method of claim 17, wherein the power conduit further comprises a wired power conduit.

19. The method of claim 17, wherein the power conduit comprises a wireless power conduit that is compatible with at least one of Bluetooth, WiFi and near field communication (NFC).