Fuel cell stack seal structure and production method therefor
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United States of America Patent
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Issued Date -
Dec 13, 2018
app pub date -
Sep 26, 2016
filing date -
Sep 26, 2016
priority date (Note) -
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status (Latency Note)
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Abstract
A fuel cell stack seal structure of a fuel cell stack, the fuel cell stack including a plurality of fuel cell single cells that are stacked, each of the fuel cell single cells including a membrane electrode assembly and a pair of separators holding the membrane electrode assembly between the pair of separators, includes inner peripheral sealing members and an outer peripheral sealing member at peripheral edges of a pair of separators, in which the inner peripheral sealing members close a gap between inner peripheral ribs that protrude at least towards a mutually facing sides of the pair of separators, and the outer peripheral sealing member that closes a gap between outer peripheral ribs that protrude at least towards the mutually facing sides of the pair of separators. The inner peripheral sealing members and the outer peripheral sealing member form a first closed space between the inner peripheral sealing members and the outer peripheral sealing member. The outer peripheral sealing member has a notch that communicates the first closed space with the outside.
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