Portable power manager having one or more device ports for connecting with external power loads

• US 8,775,846 B2
• Filed: 06/15/2010
• Issued: 07/08/2014
• Est. Priority Date: 07/10/2009
• Status: Active Grant

• Current Assignee: Revision Military Soldier Power, LLC
• Original Assignee: Protonex Technology Corporation (Honeywell International Inc.)
• Inventors: Robinson, Philip T., Dziengeleski, Seth M., Kazmierczak, James D., Holigan, David J.
• Primary Examiner(s): Lee, Thomas
• Assistant Examiner(s): Prifti, Aurel
• Application Number:
  US12/815,994
• Publication Number:
  US 20120151240A1
• Time in Patent Office: 1,484 Days
• Field of Search: 455/572, 455/574, 307/19, 307/52, 307/71, 323/283, 323/223, 323/297, 323/318, 429/9
• US Class Current: 713/340
• CPC Class Codes: G06F 1/263 Arrangements for using multiple switchable power supplies, e.g. battery and AC G06F1/30 takes precedence
• CPC Class Codes: G06F 1/266 Arrangements to supply power to external peripherals either directly from the computer or under computer control, e.g. supply of power through the communication port, computer controlled power-strips
• CPC Class Codes: G06F 1/3287 by switching off individual functional units in the computer system
• CPC Class Codes: G06F 13/4022 using switching circuits, e.g. switching matrix, connection or expansion network G06F13/4009 takes precedence
• CPC Class Codes: H02J 2310/22 The load being a portable electronic device
• CPC Class Codes: H02J 4/00 Circuit arrangements for mains or distribution networks not specified as ac or dc
• 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 7/00036 Charger exchanging data with battery
• CPC Class Codes: H02J 7/00045 Authentication, i.e. circuits for checking compatibility between one component, e.g. a battery or a battery charger, and another component, e.g. a power source
• CPC Class Codes: H02J 7/00047 with provisions for charging different types of batteries
• CPC Class Codes: H02J 7/0013 acting upon several batteries simultaneously or sequentially H02J7/1423 takes precedence
• CPC Class Codes: H02J 7/0048 Detection of remaining charge capacity or state of charge [SOC]
• CPC Class Codes: H02J 7/0068 Battery or charger load switching, e.g. concurrent charging and load supply H02J7/0013 takes precedence
• CPC Class Codes: H02J 7/02 for charging batteries from ac mains by converters
• CPC Class Codes: H02M 3/04 by static converters
• CPC Class Codes: H02M 5/04 by static converters controlling transformers, reactors or choke coils, e.g. by tap changing H02P13/00
• CPC Class Codes: H02M 7/04 by static converters
• CPC Class Codes: Y02D 10/00 Energy efficient computing, e.g. low power processors, power management or thermal management

Abstract

A portable DC power manager (400) includes an internal power bus (410) and a plurality of device ports (1150, 1160, 1170, 1180, 1190, 1200) for connecting with external power and energy sources, external power loads and other external power managers. Each device port is isolated for the internal power bus by controllable switches (A, B, C, D). Power converters (440, 442, 510) may be disposed between device ports and the internal power bus to convert voltages and attenuate current amplitude. Energy management schema operating on the power manager sums available power and allocates the available power to connected power loads according to power priority settings. A hot-change-over circuit (1300) connects additional sources to the internal bus in response to a voltage drop on the internal power bus. A compact and lightweight package (1100) enables a portability.

Claims

1. A power manager comprising:

a power bus;

a plurality of device ports each configured to operably connect with an external power device;

for each of the plurality of device ports;

a first conductive path disposed between the device port and the power bus;

a first controllable switching element disposed along the first conductive path;

a second conductive path disposed between each device port and the power bus;

a controllable power converter disposed along the second conductive path between the device port and the power bus;

a second controllable switching element disposed along the second conductive path between the controllable power converter and the device port;

wherein the second conductive path and the controllable power converter can be shared between two or more of the plurality of device ports

a data processing device and associated memory in communication with each of the first and second controllable switches and with each of the controllable power converters; and

,

energy management schema operating on the power manager for controlling each of the first and second controllable switches and each of the controllable power converters.

2. The power manager of claim 1, further comprising a communication channel that includes a communications interface device disposed between each device port and the data processing device.

3. The power manager of claim 2, wherein the communication interface device is configured for communicating with the external power devices using a communication protocol that is common to the power manager and the external power device.

4. The power manager of claim 3, wherein the communication protocol comprises one of the SMBus, the IIC and the USB communication protocols.

5. The power manager of claim 1, wherein the first controllable switching element comprise a semiconductor switch suitable for bidirectional power exchange between the power bus and corresponding device ports.

6. The power manager of claim 1, wherein the controllable power converter is suitable for bidirectional power exchange between the power bus and the external power device.

7. The power manager of claim 1, wherein the controllable power converter is operable to attenuate current amplitude passing through the power converter.

8. The power manager of claim 1, wherein the controllable power converter is operable to increase or decrease the voltage of a DC power signal.

9. The power manager of claim 1, wherein the plurality of device ports comprises six device ports where the power manager includes three controllable power converters and wherein each controllable power converter is disposed along a second different conductive path that is shared between two device ports.

10. The power manager of claim 1, wherein the plurality of device ports comprises two device ports and the second conductive path is shared between the two device ports.

11. The power manager of claim 1, wherein the power bus is configured for an average operating voltage in the range of 1-50VDC.

12. The power manager of claim 1, wherein the power bus is configured for an average operating voltage substantially centered around one of 15VDC and 30VDC.

13. The power manager of claim 11, wherein each of the controllable power converters is configured for DC to DC up and down voltage conversion over an input and output voltage range of 1-50VDC.

14. The power manager of claim 1, further comprising a user interface device in communication with the data processing device.

15. The power manager of claim 14 further comprising a display device in communication with the data processing device.

16. The power manager of claim 1 further comprising:

a sealed enclosure formed to house the power bus, data processor, associated memory and the first and second conductive paths; and

,

a terminal connector associated with each device port disposed to extend through an external wall of the sealed enclosure for connecting with the external power devices by wire cables.

17. The power manager of claim 16, further comprising an indicator device associated with each device port and in communication with the data processing device for indicating a status of an external power device connected to the corresponding device port.

18. The power manager of claim 16, wherein the sealed enclosure comprises opposing substantially rectangular top and bottom faces, opposing substantially rectangular longitudinal front and back faces and opposing substantially rectangular transverse side faces and wherein the terminal connectors are only disposed on the transverse side faces and on one of the longitudinal front and back faces.

19. The power manager of claim 18, further comprising a key pad associated with the user interface device disposed along one of the longitudinal front and back faces.

20. The power manager of claim 16, having a weight of less than 500 grams.

21. The power manager of claim 19, further comprising a display device in communication with the data processing device disposed on one of the top and bottom faces.

22. The power manager of claim 20, wherein the enclosure has a longitudinal length, a transverse width and a thickness, and the transverse width is less than 8.0 cm.

23. The power manager of claim 22, wherein the longitudinal length is less than 12.0 cm.

24. The power manager of claim 23, wherein the thickness is less than 4.0 cm.

25. The power manager of claim 1, further comprising:

a sensor in communication with the data processing device for sensing a low power condition on the power bus and for generating a low power signal in response thereto and communicating the low power signal to the data processing device;

a third conductive path disposed between each device port and the power bus;

a third controllable switching element disposed along each third conductive path and in communication with the data processing device;

a fourth controllable switching element disposed along each third conductive path between the third controllable switching element and the power bus, wherein the fourth controllable switching element is in communication with the data processing device;

and further wherein each fourth controllable switching element is conductively connected to the sensor and operates to close in response to the low power signal.

26. A power manager comprising:

a power bus;

a plurality of device ports each configured to operably connect with an external power device;

for each of the plurality of device ports;

a first conductive path disposed between the device port and the power bus; and

a first controllable switching element disposed along the first conductive path;

a second conductive path disposed between the device port and the power bus;

a second and a third controllable switching element disposed along each second conductive path;

a sensor for sensing a low power condition on the power bus and for generating a low power signal in response thereto;

wherein each of the third controllable switching elements is conductively connected to the sensor and operates to close in response the low power signal.

27. The power manager of claim 26, wherein each of the third controllable switching elements closes less than 10 msec after the sensor generates the low power signal.

28. The power manager of claim 26, further comprising a data processing device and associated memory in communication with each first, second, and third controllable switching element and with the sensor.

29. The power manager of claim 28, wherein each third controllable switching element closes in response to the low power signal without interaction with the data processing device.

30. The power manager of claim 28, further comprising energy management schema operating on the power manager wherein the energy management schema operates to determine a device type for each external power device.

31. The power manager of claim 30, wherein the energy management schema operates to open each first, second, and third controllable switching element associated with a device port that is not connected with an external power device.

32. The power manager of claim 31, wherein the energy management schema operates to close each second controllable switching element associated with a device port that is operably connected to a power source.

33. The power manager of claim 32, wherein the energy management schema operates to connect selected external power devices to the power bus over the first power channel.

34. The power manager of claim 26 further comprising a controllable power converter disposed along the first power channel between the power bus and the first controllable switching element.