Power supply system and voltage control method for fuel cell

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United States of America Patent

PATENT NO 9768631
SERIAL NO

14933492

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Abstract

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A voltage control method for a fuel cell may include: interrupting electrical connection between the fuel cell and a load in a low load state; supplying oxygen to the fuel cell in accordance with a preset condition during the electrical connection is interrupted; detecting an OCV of the fuel cell after oxygen is supplied to the fuel cell in accordance with the preset condition; reducing an amount of oxygen supplied to the fuel cell when the OCV is higher than a target voltage by a first value or larger; increasing the amount of oxygen when the OCV is lower than the target voltage by a second value or larger; and keeping the amount of oxygen when the OCV is lower than a sum of the target voltage and the first value and higher than a value obtained by subtracting the second value from the target voltage.

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Patent Owner(s)

Patent OwnerAddress
TOYOTA JIDOSHA KABUSHIKI KAISHATOYOTA-SHI AICHI 471-8571

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Inventor(s)

Inventor Name Address # of filed Patents Total Citations
Nada, Mitsuhiro Toyota, JP 89 1143
Suzuki, Hiroyuki Ama, JP 847 10497
Yamanaka, Tomio Nagoya, JP 34 62

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