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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Patent Owner(s)

Patent OwnerAddressTotal Patents
BALLARD POWER SYSTEMS INC.BURNABY139

International Classification(s)

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Inventor(s)

Inventor Name Address # of filed Patents Total Citations
Parr, Robert Kenneth Calgary, CA 4 30

Patent Citation Ranking

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Patent Info (Count) # Cites Year
 
BALLARD POWER SYSTEMS INC. (5)
6,960,401 Fuel cell purging method and apparatus 15 2001
6,953,630 Fuel cell anomaly detection method and apparatus 8 2001
7,419,734 Method and apparatus for fuel cell systems 4 2003
7,521,138 Apparatus and method for hybrid power module systems 9 2004
6,969,561 Fuel cell ambient environment monitoring and control apparatus and method 2 2004
 
DAIMLER AG (2)
6,979,504 Fuel cell system automatic power switching method and apparatus 5 2001
7,632,583 Apparatus for improving the performance of a fuel cell electric power system 2 2003
 
ALONSO, MOLLY (1)
8,364,287 Apparatus, system, and method to manage the generation and use of hybrid electric power 2 2008
 
TOYOTA JIDOSHA KABUSHIKI KAISHA (1)
8,142,952 Fuel cell battery system 0 2007