Fuel cell power and management system, and technique for controlling and/or operating same

• US 7,914,945 B2
• Filed: 06/13/2005
• Issued: 03/29/2011
• Est. Priority Date: 01/22/2004
• Status: Expired due to Fees

• Current Assignee: Intelligent Energy Limited (Lb-shell Plc)
• Original Assignee: Jadoo Power Systems, Inc.
• Inventors: Dunn, Glenn M., Getchel, Paul, MacGregor, Duncan D., MacGregor, Sinclair D., Pearson, Kenneth E.
• Primary Examiner(s): Ruddock, Ula C.
• Assistant Examiner(s): Parsons, Thomas H.
• Application Number:
  US11/151,067
• Publication Number:
  US 20050233184A1
• Time in Patent Office: 2,115 Days
• Field of Search: 429/12, 429/23, 429/25, 429/22, 429/515
• US Class Current: 429/515
• CPC Class Codes: F17C 2205/0308 Protective caps
• CPC Class Codes: H01M 2250/30 Fuel cells in portable systems, e.g. mobile phone, laptop
• CPC Class Codes: H01M 8/04089 of gaseous reactants
• CPC Class Codes: H01M 8/04208 Cartridges, cryogenic media or cryogenic reservoirs
• CPC Class Codes: H01M 8/04373 of auxiliary devices, e.g. reformers, compressors, burners
• CPC Class Codes: H01M 8/04388 of anode reactants at the inlet or inside the fuel cell
• CPC Class Codes: H01M 8/04425 at auxiliary devices, e.g. reformers, compressors, burners
• CPC Class Codes: Y02B 90/10 Applications of fuel cells in buildings
• CPC Class Codes: Y02E 60/32 Hydrogen storage
• CPC Class Codes: Y02E 60/50 Fuel cells

Abstract

There are many inventions described and illustrated herein. In one aspect, the present invention is directed to a portable fuel cell power and management system (for example, hydrogen and/or methanol based systems), components and/or elements thereof, as well as techniques for controlling and/or operating such systems. The fuel cell power management system (and method of controlling and/or operating same) actively monitors, manages and/or controls one or more operating parameter(s) of the fuel cell system. For example, the system monitors, manages and/or controls the consumption and/or the rate of consumption of fuel by the system, and in response thereto, may provide and/or alert the user to amount of fuel remaining, consumed, the rate of consumption and/or the time (or estimation thereof remaining until all of the fuel is spent. In this way, the user may schedule or plan accordingly.

Claims

1. A fuel storage unit for use in a fuel cell management system comprising a power unit and a refill unit, the fuel storage unit comprising:

a removable fuel vessel operable to store the fuel;

memory to store data which is representative of at least one operating parameter of the fuel storage unit;

a fuel storage unit control system operable to determine, monitor, manage and/or control the parameter; and

a fuel storage unit interface comprising;

a fuel storage unit mechanical interface; and

a fuel storage unit communications interface,

wherein a mechanical interface of the power unit and the fuel storage unit mechanical interface are respectively operable to permit holding, retention and/or engagement between the power unit and the fuel storage unit, and a fluid interface therebetween permits fluid communication of the fuel between the fuel storage unit and the power unit,

wherein a communications interface of the power unit and the communications interface of the fuel storage unit are respectively operable to provide communications between a control system of the power unit and the control system of the fuel storage unit;

wherein a mechanical interface of the refill unit and the fuel storage unit mechanical interface are respectively operable to permit holding, retention and/or engagement between the refill unit and the fuel storage unit, and a fluid interface therebetween permits fluid communication of the fuel between the fuel storage unit and the refill unit, and

wherein a communications interface of the refill unit and the communications interface of the fuel storage unit are respectively operable to provide communications between a control system of the refill unit and the control system of the fuel storage unit.

2. The fuel storage unit of claim 1 wherein the at least one operating parameter is representative of an amount of fuel that is in the removable fuel vessel.

3. The fuel storage unit of claim 2 wherein the control system monitors the parameter.

4. The fuel storage unit of claim 3 wherein the parameter is representative of an amount of hydrogen-based fuel that is in the fuel vessel using:

(1) an amount of time the fuel storage unit provides fuel to an external unit, or (2) data which is representative of a pressure and/or temperature of the fuel in the fuel vessel.

5. The fuel storage unit of claim 1 wherein the at least one operating parameter is a rate of consumption of the fuel by an external unit.

6. The fuel storage unit of claim 5 wherein the control system monitors a parameter which is representative of a rate of consumption of the fuel by the external unit using one or more sensors that provides data which is representative of the rate of flow of the fuel, the pressure of the fuel in the vessel and/or the temperature of the fuel in the vessel.

7. The fuel storage unit of claim 1 wherein the memory stores data which is representative of one or more unique characteristics of fuel storage unit.

8. The fuel storage unit of claim 7 wherein the one or more unique characteristics include at least one of a serial number of the fuel storage unit, a date of manufacture of the fuel storage unit, a date of assembly of the fuel storage unit, a type of fuel contained in removable fuel vessel, a fuel capacity of the fuel storage unit, and a number of refill operations the fuel storage unit has undergone.

9. The fuel storage unit of claim 1 wherein the fuel storage unit further includes a display to visually display information which is representative of the at least one operating parameter.

10. The fuel storage unit of claim 1 wherein the control system includes a microprocessor or microcontroller and the memory is integrated into the microprocessor or microcontroller.

11. The fuel storage unit of claim 10 wherein the control system determines the at least one operating parameter of the fuel storage unit and stores data which is representative of the at least one operating parameter of the fuel storage unit in the memory.

12. The fuel storage unit of claim 1 wherein the memory and the control system are disposed on the same integrated circuit device.

13. The fuel storage unit of claim 1 further including an electrical interface, coupled to the memory device, to receive data from external circuitry, wherein the data is representative of the at least one operating parameter.

14. The fuel storage unit of claim 13 wherein the electrical interface receives the data which is representative of the at least one operating parameter and the memory, in response to a command, stores the data which is representative of the at least one operating parameter of the fuel storage unit.

15. The fuel storage unit of claim 14 wherein the at least one operating parameter is representative of an amount of fuel that is in the removable fuel vessel and the fuel comprises a hydrogen-based fuel.

16. The fuel storage unit of claim 14 wherein the at least one operating parameter is representative of an amount of fuel that has been consumed from the removable fuel vessel.

17. The fuel storage unit of claim 1 wherein the communications interface operationally connects to a communication system to provide data which is representative of the at least one operating parameter of the fuel storage unit to an external system.

18. The fuel storage unit of claim 17 wherein the communication system communicates wirelessly.

19. A hydrogen-based fuel cell cartridge for use in a hydrogen-based fuel cell management system, the hydrogen-based fuel cell cartridge comprising:

a hydrogen-based fuel vessel adapted to store hydrogen-based fuel;

a valve assembly, coupled to the fuel vessel, to provide exchange of hydrogen-based fuel with an external unit comprising any one of;

a power unit or a refill unit;

the valve assembly comprising a bidirectional interface, including an electrical interface to receive data which is representative of at least one operating parameter of the hydrogen-based fuel cartridge from an external unit; and

memory to store the data which is representative of at least one operating parameter of the hydrogen-based fuel cartridge; and

control system coupled to the memory to determine, monitor and/or control the at least one operating parameter;

wherein the hydrogen-based fuel vessel is operable to be coupled at the bidirectional interface to any one of a power unit and a refill unit via an integrated fluid and communications coupling,

the power unit comprising a hydrogen-based fuel cell, adapted to receive the hydrogen-based fuel from the hydrogen-based fuel vessel and to generate electrical power therefrom; and

the refill unit operable to provide the hydrogen-based fuel to the hydrogen-based fuel cartridge for storage in the fuel vessel.

20. The hydrogen-based fuel cell cartridge of claim 19 wherein the interface further includes a mechanical interface adapted to connect to the external unit.

21. The hydrogen-based fuel cell cartridge of claim 19 wherein the at least one operating parameter is representative of the amount of hydrogen-based fuel that is in the fuel vessel.

22. The hydrogen-based fuel cell cartridge of claim 19 wherein the at least one operating parameter is representative of the rate of consumption of the hydrogen-based fuel by the external unit.

23. The hydrogen-based fuel cell cartridge of claim 19 wherein the memory stores data which is representative of one or more unique characteristics of hydrogen-based fuel cartridge wherein the one or more unique characteristics of hydrogen-based fuel cartridge includes at least one of a serial number of the fuel cartridge, date of manufacture of the fuel cartridge, date of assembly of the fuel cartridge, type of fuel contained in fuel vessel, fuel capacity of the fuel cartridge, and number of refill operations the fuel cartridge has undergone.

24. The hydrogen-based fuel cell cartridge of claim 19 wherein the hydrogen-based fuel cartridge further includes a display to visually display information which is representative of the at least one operating parameter.

25. The hydrogen-based fuel cell cartridge of claim 24 wherein the memory, in response to a command, stores the data which is representative of the at least one operating parameter of the hydrogen-based fuel cartridge.

26. The hydrogen-based fuel cell cartridge of claim 24 wherein the at least one operating parameter is representative of an amount of hydrogen-based fuel that is remaining in the fuel vessel or the amount of hydrogen-based fuel that has been consumed from the fuel vessel.

27. A hydrogen-based fuel cartridge for storing hydrogen-based fuel, comprising:

a fuel vessel adapted to store hydrogen-based fuel;

a cartridge interface comprising a mechanical interface;

a bidirectional cartridge valve assembly;

a memory to store data which is representative of a plurality of operating parameters of the hydrogen-based fuel cartridge; and

a control system adapted to determine, monitor, manage and/or control the plurality of operating parameters;

wherein the hydrogen-based fuel cartridge is operable to be coupled to any one of a power unit and a refill unit via an integrated fluid and communications coupling,

the power unit comprising;

a power unit interface comprising a mechanical interface to mechanically connect to the mechanical interface of the cartridge interface;

a power unit valve assembly to engage the cartridge valve assembly and to enable hydrogen-based fuel to flow between the hydrogen-based fuel cartridge and the power unit;

a hydrogen-based fuel cell being coupled to the power unit valve assembly to receive the hydrogen-based fuel from the fuel cartridge and to generate electrical power therefrom.

28. The system of claim 27, further comprising:

a hydrogen refill unit, the hydrogen refill unit comprising a fuel source unit disposed to store and supply the hydrogen-based fuel, the hydrogen refill unit disposed to be coupled to the bidirectional cartridge valve assembly of the hydrogen-based fuel cartridge.