The application discloses a fuel
cell visual testing device. The
metal flow field plate and the
cathode end plate are respectively provided with hollow channels, and the visual window body is encapsulated by a window protection sleeve and placed in a rectangular groove. The visual window body and the encapsulated end plate are both transparent bodies, and the combination forms a constant temperature chamber. Four end surfaces of the
cathode end plate are symmetrically provided with constant temperature gas and reactant inlet and outlet ports. The
metal foam is compressed in the conductive area of the
metal flow field plate, and the uncompressed part forms a
metal foam flow field by the combination of the
metal flow field plate and is used as a visual fuel
cell unit. The
anode end plate, the
anode current collector plate, the
anode graphite plate, the
membrane electrode assembly, the
metal flow field plate, the
cathode end plate and the encapsulated end plate are sequentially fastened and sealed. The device can effectively and accurately reflect the
liquid water transmission and distribution in the flow field of the fuel
cell. The hollow area of the
metal flow field plate can be changed to different areas or different flow field shapes according to the testing requirements, so that the on-line
visual testing of the fuel cell is realized.