US Patent Application No: 2003/0022,036

Number of patents in Portfolio can not be more than 2000

Fuel cell controller self inspection

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Abstract

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A microcontroller in a fuel cell system performs at least a portion of a self-test of general registers while the system is in a starting state, and at least a portion of a self-test while in a running state. The self-test includes setting the general purpose registers to a first bit pattern, complementing the bits of one of the general registers, copying the complemented general register to a special register, determining if each bit in special register was complemented, and producing a notification. The microcontroller also verifies that the other general registers are not affected. The microcontroller again complements the previously complemented general purpose register, copies the complemented general register to the special register, determines if the special register matches the predefined pattern, and produces a notification. The microcontroller again verifies that the other general purpose registers were not affected. The process is repeated for the complement of the first bit pattern, and for each general register.

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First Claim

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Patent Owner(s)

Patent OwnerAddressTotal Patents
BALLARD POWER SYSTEMS INC.BURNABY63

International Classification(s)

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Inventor(s)

Inventor Name Address # of filed Patents Total Citations
Parr, Robert Kenneth Calgary, CA 3 36

Cited Art Landscape

Patent Info (Count) # Cites Year
 
PLUG POWER INC. (1)
* 6,140,820 Measuring cell voltages of a fuel cell stack 30 1999
 
U.S. PHILIPS CORPORATION (1)
* 5,325,367 Memory device containing a static ram memory that is adapted for executing a self-test, and integrated circuit containing such a device as an embedded static ram memory 75 1991
 
SIEMENS AKTIENGESELLSCHAFT (2)
* 5,478,662 Method and apparatus for disposing of water and/or inert gas from a fuel cell block 72 1993
* 5,397,655 Fuel cell block and method for adjusting the removal of inert gas from the fuel cell block 12 1993
 
H. POWER ENTERPRISES OF CANADA INC. (1)
* 6,028,414 Fuel cell stand-by energy supply system 18 1998
 
PINNACLE WEST CAPITAL CORPORATION (1)
* 6,362,540 Expandable hybrid electric generator and method therefor 28 1999
 
SUNDSTRAND CORPORATION (1)
* 4,649,537 Random pattern lock and key fault detection scheme for microprocessor systems 10 1984
 
GM GLOBAL TECHNOLOGY OPERATIONS LLC (1)
* 5,945,229 Pattern recognition monitoring of PEM fuel cell 32 1997
* Cited By Examiner

Patent Citation Ranking

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Patent Info (Count) # Cites Year
 
DAIMLER AG (2)
7,632,583 Apparatus for improving the performance of a fuel cell electric power system 4 2003
* 2004/0224,192 Method and apparatus for improving the performance of a fuel cell electric power system 15 2003
 
ALONSO, MOLLY (1)
8,364,287 Apparatus, system, and method to manage the generation and use of hybrid electric power 8 2008
 
FORD MOTOR COMPANY (1)
* 2008/0107,933 Fuel cell hibernation mode method and apparatus 4 2006
 
BALLARD POWER SYSTEMS INC. (17)
6,979,504 Fuel cell system automatic power switching method and apparatus 5 2001
6,960,401 Fuel cell purging method and apparatus 17 2001
6,953,630 Fuel cell anomaly detection method and apparatus 12 2001
7,419,734 Method and apparatus for fuel cell systems 4 2003
* 2004/0229,095 Method and apparatus for fuel cell systems 0 2003
* 2004/0009,380 Adjustable array of fuel cell systems 11 2003
* 2004/0185,316 Fuel cell system method, apparatus and scheduling 12 2004
7,521,138 Apparatus and method for hybrid power module systems 14 2004
* 2005/0249,988 Apparatus and method for hybrid power module systems 23 2004
* 2005/0249,989 Apparatus and method for hybrid power module systems 7 2004
6,969,561 Fuel cell ambient environment monitoring and control apparatus and method 2 2004
* 2004/0265,658 Fuel cell ambient environment monitoring and control apparatus and method 2 2004
* 2006/0172,162 Electric power plant with adjustable array of fuel cell systems 10 2006
* 2007/0087,231 METHOD AND APPARATUS FOR MULTIPLE MODE CONTROL OF VOLTAGE FROM A FUEL CELL SYSTEM 3 2006
* 2008/0102,322 METHOD AND APPARATUS FOR IMPROVING THE PERFORMANCE OF A FUEL CELL ELECTRIC POWER SYSTEM 3 2008
* 2009/0208,781 METHOD FOR OPERATING A FUEL CELL SYSTEM 0 2008
* 2008/0286,614 METHOD AND APPARATUS FOR FUEL CELL SYSTEMS 1 2008
 
NISSAN MOTOR CO., LTD. (1)
* 2006/0134,478 Fuel cell system 5 2004
 
TOYOTA JIDOSHA KABUSHIKI KAISHA (1)
8,142,952 Fuel cell battery system 0 2007
 
SIEMENS VDO AUTOMOTIVE CORPORATION (1)
* 2006/0152,085 Power system method and apparatus 44 2005
* Cited By Examiner