Fuel cartridge for fuel cell power systems and methods for power generation

• US 20070011251A1
• Filed: 12/08/2005
• Published: 01/11/2007
• Est. Priority Date: 12/09/2004
• Status: Abandoned Application

• Current Assignee: Protonex Technology Corporation (Honeywell International Inc.), Millennium Cell Inc.
• Original Assignee: Protonex Technology Corporation (Honeywell International Inc.), Millennium Cell Inc.
• Inventors: Osenar, Paul, Brown, William, Sabin, Paul, Rezac, Peter, Mohring, Richard, Fennimore, Keith, Baldic, Jeff, Berry, Grant, McNamara, Kevin
• Application Number:
  US11/296,578
• Publication Number:
  US 20070011251A1
• Time in Patent Office: Days
• US Class Current: 709/206
• CPC Class Codes: H01M 8/0202 Collectors; Separators, e.g. bipolar separators; Interconnectors
• CPC Class Codes: H01M 8/04007 related to heat exchange
• CPC Class Codes: H01M 8/04067 Heat exchange or temperature measuring elements, thermal insulation, e.g. heat pipes, heat pumps, fins
• CPC Class Codes: H01M 8/04089 of gaseous reactants
• CPC Class Codes: H01M 8/04201 Reactant storage and supply, e.g. means for feeding, pipes
• CPC Class Codes: H01M 8/04208 Cartridges, cryogenic media or cryogenic reservoirs
• CPC Class Codes: H01M 8/04216 characterised by the choice for a specific material, e.g. carbon, hydride, absorbent
• CPC Class Codes: H01M 8/0432 Temperature; Ambient temperature
• CPC Class Codes: H01M 8/0438 Pressure; Ambient pressure; Flow
• CPC Class Codes: H01M 8/04388 of anode reactants at the inlet or inside the fuel cell
• CPC Class Codes: H01M 8/04761 of fuel cell exhausts
• CPC Class Codes: H01M 8/04776 at auxiliary devices, e.g. reformer, compressor, burner
• CPC Class Codes: H01M 8/0631 Reactor construction specially adapted for combination reactor/fuel cell hydrogen C01B3/00; reactors for physicochemical processes B01J19/00
• CPC Class Codes: H01M 8/065 by dissolution of metals or alloys; by dehydriding metallic substances
• CPC Class Codes: H01M 8/0687 Reactant purification by the use of membranes or filters
• CPC Class Codes: Y02E 60/50 Fuel cells

Abstract

A fuel cell power system including a removable hydrogen generation fuel cartridge module and method are disclosed. The fuel cell power system incorporates one or more of the following elements: a) a mechanism for fuel regulation which may be controlled by an auxiliary module; b) a means for heat exchange in communication with the reactor and/or the fuel cartridge body; c) an air filter for the incoming oxidant gas feed to the power module; d) a means to transfer mechanical energy from the power module to the fuel cartridge; and e) a means for heat exchange.

Claims

1. A fuel cartridge configured for removable connection to a fuel cell power module, comprising:

a reformable fuel hydrogen generation system containing a fuel storage region, a hydrogen gas separation region, and a reactor;

a fuel regulator configured to regulate fuel flow from the fuel storage region to the reactor;

a hydrogen outlet in communication with the hydrogen separation region; and

at least one separable interface selected from the group consisting of;

a mechanism to connect the fuel regulator to the power module;

a heat exchanger for transfer of heat between the fuel cartridge and the power module;

an electrical connector for transmitting electricity between the fuel cartridge and the power module; and

an air outlet configured to provide filtered air to the power module.

2. The fuel cartridge of claim 1, wherein the fuel regulator comprises a diaphragm pump head.

3. The fuel cartridge of claim 1, wherein the fuel regulator comprises a piezoelectric pump.

4. The fuel cartridge of claim 1, wherein the fuel regulator comprises a peristaltic pump head.

5. The fuel cartridge of claim 1, wherein the fuel regulator comprises a screw driven plate.

6. The fuel cartridge of claim 1, wherein the reformable fuel hydrogen generation system further comprises a fuel inlet.

7. The fuel cartridge of claim 1, wherein the fuel storage region is separated from the hydrogen separation region by at least one movable partition.

8. The fuel cartridge of claim 1, wherein the fuel storage region contains at least one boron hydride fuel component.

9. The fuel cartridge of claim 1, wherein the reformable fuel hydrogen generation system further comprises at least one water storage region.

10. The fuel cartridge of claim 1, wherein the reactor comprises a hydrogen generation catalyst.

11. The fuel cartridge of claim 10, wherein the hydrogen generation catalyst is in a form selected from the group consisting of pellets, chips, monoliths, and powders.

12. The fuel cartridge of claim 1, wherein the fuel cartridge comprises an air filter.

13. The fuel cartridge of claim 1, wherein the fuel cartridge comprises a electrical connector for transmitting data to an optional processor in a power module.

14. The fuel cartridge of claim 1, wherein the fuel cartridge comprises a electrical connector for receiving electrical power from a power module.

15. The fuel cartridge of claim 1, wherein the fuel storage area is refillable.

16. The fuel cartridge of claim 1, wherein the cartridge is disposable.

17. The fuel cartridge of claim 1, wherein the cartridge comprises a signal means adapted for electrical communication with the power module.

18. The fuel cartridge of claim 13, wherein the electrical connector of the fuel cartridge is adapted for removable connection to a electrical connector on the power module.

19. The fuel cartridge of claim 18, wherein the hydrogen generation system is not activatable unless the electrical connectors are connected.

20. The fuel cartridge of claim 1, wherein the fuel storage region and the hydrogen separation region are separated by a movable partition containing a reactor.

21. The fuel cartridge of claim 20, wherein the movable partition is configured to regulate fuel flow to the reactor from a control mechanism in the power module.

22. The fuel cartridge of claim 1, wherein the cartridge comprises a hydrogen permeable membrane in fluid communication with at least one of the hydrogen separation region and the fuel storage region.

23. The fuel cartridge of claim 1, wherein the fuel regulator regulates the flow of fuel to the reactor in response to hydrogen pressure.

24. A fuel cartridge for providing hydrogen to a fuel cell power module, comprising:

a reformable fuel hydrogen generation system containing a heat exchanger for transfer of heat between the system and a removably connectable power module;

a means for fuel regulation containing a mechanism for control by a removably connectable power module; and

a hydrogen outlet configured to provide hydrogen gas to a removably connectable power module.

25. The fuel cartridge of claim 24, wherein the fuel regulation means is selected from the group consisting of a diaphragm pump, a piezoelectric pump, or a peristaltic pump.

26. The fuel cartridge of claim 24, wherein the fuel regulation means comprises a screw driven plate.

27. The fuel cartridge of claim 24, wherein the reformable fuel hydrogen generation system comprises a fuel storage region, a reaction chamber, and a hydrogen separation region.

28. The fuel cartridge of claim 27, wherein the chamber comprises a hydrogen generation catalyst.

29. The fuel cartridge of claim 24, further comprising an air filter, an air inlet, and an air outlet configured to provide filtered air to a power module.

30. The fuel cartridge of claim 24, further comprising a cartridge electrical connector configured to interface with a power module.

31. The fuel cartridge of claim 24, wherein the heat exchanger comprises a heat sink.

32. The fuel cartridge of claim 24, wherein the fuel cartridge further comprises a fan configured to cool the hydrogen generation system.

33. The fuel cartridge of claim 24, further comprising a hydrogen purification system adapted to remove impurities from a gas stream containing hydrogen gas.

34. The fuel cartridge of claim 24, wherein the hydrogen generation system contains a catalyst metal.

35. The fuel cartridge of claim 34, wherein the catalyst metal is supported on a substrate.

36. The fuel cartridge of claim 27, further comprising a water storage area.

37. The fuel cartridge of claim 27, wherein the regions are separated by at least one movable partition configured to provide volume exchange between the regions.

38. The fuel cartridge of claim 24, further comprising a hydrogen separation membrane between the hydrogen separation region and the hydrogen outlet.

39. The fuel cartridge of claim 24, further comprising a heating loop configured to heat the hydrogen generation system.

40. The fuel cartridge of claim 24, further comprising at least one sensing means in electrical communications with a signal processor.

41. The fuel cartridge of claim 24, wherein the fuel storage region contains a reformable hydrocarbon fuel.

42. The fuel cartridge of claim 24, wherein the fuel storage region contains a chemical hydride fuel.

43. A power source comprising:

a power module having a fuel cell, a hydrogen inlet, and an air inlet;

a fuel cartridge having a fuel storage region, a reactor, and a hydrogen outlet;

a fuel control mechanism comprising a fuel regulator in the fuel cartridge; and

wherein the power module and fuel cartridge are separable and share at least one interface for transfer of energy or material selected from the group consisting of data, heat, air, electricity, and mechanical energy.

44. The power source of claim 43, further comprising a means for heat exchange between the reactor and the power module.

45. The power source of claim 44, wherein the means for heat exchange comprises a plate on the power module and an exposed face of the reactor.

46. The power source of claim 43, wherein the power module comprises a hydrogen generation auxiliary module and a fuel cell module and wherein the auxiliary module houses a fuel controller configured to communicate with the fuel regulator.

47. The power source of claim 45, wherein the plate on the power module has at least one groove and the exposed face of the reactor is configured for removable connection with the groove.

48. The power source of claim 45, wherein a thermally conductive material is provided on at least one of the faces or plate.

49. The power source of claim 43, wherein the fuel control mechanism is selected from the group consisting of a diaphragm pump, a piezoelectric pump, a peristaltic pump, and a screw driven plate.

50. The power source of claim 43, wherein the fuel control mechanism is a passive regulator operable by hydrogen pressure in the fuel cartridge.

51. The power source of claim 50, wherein the fuel control mechanism is a throttle valve.

52. The power source of claim 43, wherein the fuel control mechanism comprises at least one sensor and a microprocessor.

53. The power source of claim 43, wherein the fuel control mechanism comprises a movable screw driven plate containing the reactor.

54. The power source of claim 53, wherein the plate is movable in response to a motor assembly in the power module.

55. The power source of claim 54, wherein the plate comprises at least a portion of a movable partition between the fuel storage region and a hydrogen separation region.

56. The power source of claim 43, wherein the fuel cartridge comprises an air filter.

57. The power source of claim 56, wherein the air filter is in fluid communication with an air outlet adapted for removable connection to the air inlet of the power module.

58. The power source of claim 57, further comprising a mechanical interface adapted for control of the fuel regulator.

59. The power source of claim 57, further comprising removably connectable heat exchange and data transmission interfaces between the cartridge and module.

60. A method for generating power from a fuel cell power system, comprising:

providing a fuel cartridge containing a reformable fuel hydrogen generation system, a fuel regulator, and a hydrogen outlet;

providing a power module containing a fuel cell, a hydrogen inlet, and an air inlet;

connecting the fuel cartridge to the power module at at least one removably connectable interface selected from the group consisting of an air conduit, a heat exchanger, and a fuel control mechanism; and

controlling liquid fuel flow in the fuel cartridge to generate hydrogen gas, and transferring the gas to the fuel cell of the power module to generate power.

61. The method of claim 60, wherein the fuel regulator mechanism is selected from the group consisting of a diaphragm pump, a piezoelectric pump, a peristaltic pump, and a screw driven plate.

62. The method of claim 60, further comprising controlling the temperature of the fuel cartridge from a heat exchanger within the power module.

63. The method of claim 60, further comprising controlling the temperature of the fuel cartridge from a heat exchange mechanism within the fuel cartridge.

64. The method of claim 60, further comprising filtering air within the fuel cartridge to provide filtered air to the power module.

65. The method of claim 60, comprising regulating fuel flow in response to hydrogen pressure in the cartridge.

66. The method of claim 60, comprising connecting the cartridge to the module at interfaces between the hydrogen inlet and outlet, an air inlet on the module and an air outlet on the cartridge, and a mechanism for transfer of heat between the cartridge and module.

67. The method of claim 60, further comprising connecting the cartridge, and module at electrical connectors for electronic data transfer.

68. The method of claim 60, wherein the fuel regulator is removably connectable to a fuel controller in the power module.

69. The method of claim 60, wherein the reactor contains a supported catalyst.

70. The method of claim 60, wherein the fuel hydrogen generation system comprises a fuel storage area separated from a hydrogen separator area by a movable partition.

71. The method of claim 60, wherein the fuel hydrogen generation system comprises a refillable fuel storage area.

72. The method of claim 60, wherein the fuel cartridge is disposable.

73. The method of claim 70, wherein the fuel storage area contains a chemical hydride.

74. The method of claim 70, wherein the fuel storage area contains a reformable hydrocarbon.

75. A power source comprising:

a power module having a fuel cell, a hydrogen inlet, and an air inlet;

a fuel cartridge having a fuel storage region, a reactor containing a catalyst, a fuel regulator and a hydrogen outlet;

a mechanism for control of the fuel regulator from the power module;

a means for exchange of heat between the fuel cartridge and the power module;

an interface for transmitting electricity between the fuel cartridge and the power module; and

wherein the power module and fuel cartridge are removably connectable.

76. The power source of claim 75, further comprising an air filter in the fuel cartridge configured to provide filtered air to the power module.

77. The power source of claim 75, further comprising a means for transfer of heat from the reactor to the power module.

78. The power source of claim 75, further comprising a means to transfer heat from the fuel cell to the reactor.