Spring member, fuel cell unit, fuel cell stack, and method for manufacturing fuel cell stack

A grid spring is provided with first raised pieces that generate an elastic force for pressing a separator toward a power generation cell and second raised pieces that generate an elastic force independently of the first raised pieces. The spring constant of the first raised pieces decreases as a re...

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Bibliographic Details
Main Authors Yaginuma, Motoki, Kawasaki, Koichi, Tajima, Norihiro
Format Patent
LanguageEnglish
Published 09.08.2022
Subjects
BASIC ELECTRIC ELEMENTS
ELECTRICITY
PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSIONOF CHEMICAL INTO ELECTRICAL ENERGY
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Summary:A grid spring is provided with first raised pieces that generate an elastic force for pressing a separator toward a power generation cell and second raised pieces that generate an elastic force independently of the first raised pieces. The spring constant of the first raised pieces decreases as a result of heating of a grid spring. The grid spring functions as a high reaction force spring as a result of a larger spring constant of the first spring member relative to a spring constant of the second spring member before heating. After being heated, the grid spring functions as a low reaction force spring as a result of the smaller spring constant of the first spring member before being heated.
Bibliography:Application Number: US201816642419