Matsushita Electric Industrial Co., Ltd.

Panasonic Corporation

Panasonic Intellectual Property Management Co., Ltd.

Tatsuto Yamazaki

Hideo Ohara

Hiroki Kusakabe

Shinsuke Takeguchi

Nobuhiro Hase

Yoshiaki Yamamoto

Kazuhito Hatoh

Susumu Kobayashi

Masayo Sugou, Legal Representative

Nobuhiro c/o Matsushita Electric Industrial Co Ltd Hase

Yoshiaki c/o Matsushita Electric Industrial Co Ltd Yamamoto

Junji c/o Matsushita Electric Industrial Co Ltd Niikura

Shinsuke c/o Matsushita Electric Industrial Co Ltd Takeguchi

Masato c/o Matsushita Electric Industrial Co Ltd Hosaka

Toshihiro c/o Matsushita Electric Industrial Co Ltd Matsumoto

Teruhisa c/o Matsushita Electric Industrial Co Ltd Kanbara

Satoru c/o Matsushita Electric Industrial Co Ltd Fujii

Kazuhito c/o Matsushita Electric Industrial Co Ltd Hatoh

Kazufumi c/o Matsushita Electric Industrial Co Ltd Nishida

Hideo c/o Matsushita Electric Industrial Co Ltd Ohara

Hiroki c/o Matsushita Electric Industrial Co Ltd Kusakabe

A decrease in voltage in a polymer electrolyte fuel cell comprising stack of unit cells caused by the temperature difference between the cells located at the ends and the other cells due to a differential in heat dissipation from end plates is prevented by controlling the cooling temperature of the cells closest to the end plates of the fuel cell without affecting the output voltage of the cells in the middle by not including a coolant flow channel in the conductive separator plate between at least one of the end plates and the unit cell located closest to the one of the end plates.

Polymer electrolyte fuel cell

A polymer electrolyte fuel cell including a plurality of membrane electrode assemblies and a plurality of conductive separators, wherein the plurality of conductive separators include at least one separator comprising: a fuel gas inlet-side manifold aperture; a fuel gas outlet-side manifold aperture; a gas flow channel for fuel gas formed on an anode-side of the separator; an inlet-side through hole and an outlet-side through hole penetrating the separator which are formed at an inlet-side end and an outlet-side end of the gas flow channel for fuel gas; and an inlet-side connection groove and an outlet-side connection groove for connecting the inlet-side and outlet-side through holes with the fuel gas inlet-side manifold aperture and the fuel gas outlet-side manifold aperture, respectively, which are formed on a cathode-side of the separator.

The invention relates to fuel cell end plates comprising a resin-dominant material, preferably made by injection molding to reduce their cost and weight and increase their corrosion resistance.

Growing community of inventors

Moriguchi, Japan

Tatsuto Yamazaki