Honda Motor Co., Ltd.

Honda Giken Kogyo Kabushiki Kaisha

Showa Denko K.k.

Toshiki Kawamura

Yukihito Tanaka

Tadashi Iino

Zenichiro Izumi

Narutoshi Sugita

Shuhei Goto

Tadashi Nishiyama

Hideaki Kikuchi

Tadashi Tsunoda

Masaaki Sakano

Naoyuki Enjoji

Mitsuru Sayama

Teruyuki Ohtani

Masao Utsunomiya

Kentaro Nagoshi

Tsutomu Takahashi

Naoki Yamano

Kimiharu Mizusaki

Katsuhiko Kohyama

Takashi Komura

Yasuhide Fukushima

Tokiyuki Wakayama

Yohei Kataoka

Hideyuki Yanai

Tsuneo Endou

Takanori Monda

In a production method and a production apparatus for producing a joint separator, in the state where first and second separators are stacked together, a step of fixing the first and second separators by holding the first and second separators between a base and a holder is performed. Thereafter, a step of welding the first and second separators by radiating a laser light from laser light emitting units, through gaps provided in the holder is performed. After the welding step, an additional pressing step of moving pressing members ahead through the gaps to press heat affected zones welded by the laser light, by the pressing members is performed.

Production method and production apparatus for joint separator

A fuel cell includes a membrane electrode assembly, a first metal separator, a second metal separator, linear protrusions, and embossed protrusions. The first metal separator is stacked on the membrane electrode assembly. The second metal separator is stacked on the first metal separator to define a coolant channel between the metal separators. The first metal separator includes wave-shaped protrusions projecting from the first metal separator by a first height to define to form the coolant channel. The linear protrusions are connected to both distal ends of each of the wave-shaped protrusions. The linear protrusions project from the first metal separator by a second height smaller than the first height. The embossed protrusions are connected to tip ends of the linear protrusions. The embossed protrusions project from the first metal separator by a third height larger than the second height to be in contact with the second metal separator.

Fuel cell

A first metal separator and an electrolyte electrode assembly are stacked in a fuel cell. The first metal separator comprises a convex portion that abuts against the electrolyte electrode assembly, and a concave portion forming an oxygen-containing gas flow channel between the electrolyte electrode assembly and the concave portion. A gold coating layer is formed on the convex portion. The gold coating layer includes a main gold coating portion and a reticulate gold coating portion that extends around the main gold coating portion.

Fuel cell metal separator and noble metal coating method therefor

A lightweight, compact high-performance fuel cell separator is provided with enhanced output density and capable of being stacked without a gas seal member. Embodiments include a separator having a corrugated electrically conducting flow path. A recess and projection are formed on front and rear surfaces, each constituting a gas flow path alternately arrayed abreast in a plane.

Fuel cell separator having a corrugated electrically conducting flow path

A high-performance separator for a fuel cell is provided that includes an electrically conducting flow path part and an integrated insulating outer circumferential part surrounding the flow path part. The flow path part includes an electrically conducting resin composition including a carbonaceous material (A) and a thermoplastic resin composition (B) at a mass ratio (A)/(B) of 1 to 20 with the total mass of (A) and (B) accounting for 80 to 100 mass % in the composition. The flow path part has a corrugated shape having a recess and a projection on each of front and back surfaces thereof, where the recess constitutes a groove for a flow path, and a thickness of 0.05 to 0.5 mm and a maximum thickness/minimum thickness ratio of 1 to 3. The insulating outer circumferential part includes an insulating thermoplastic resin composition having a volume resistivity of 10&#x3a9;cm or more.

Separator for fuel cell having electrically conducting flow path part

A fuel cell stack includes a stack body formed by stacking a plurality of power generation cells. A terminal, an insulating plate, and an end plate are provided at one end of the stack body, and a terminal, an insulating plate, and an end plate are provided at the other end of the stack body. Each of the terminals includes an electrically conductive plate member, and an electrically conductive rod terminal joined integrally with the electrically conductive plate member. A joint portion joining the electrically conductive plate member and the electrically conductive rod terminal is formed by friction stir welding.

Fuel cell stack with power collecting terminals

A terminal plate of a fuel cell stack includes an electron conductive area and a passage area. The electron conductive area is connected to an anode. The passage area includes passages for supplying an oxygen-containing gas, a fuel gas, and coolant to a membrane electrode assembly. The electron conductive area is made of composite of foamed metal and insulating resin. The passage area is made of the insulating resin. The electron conductive area and the passage area are combined together by injection molding, for example.

Fuel cell stack and method of producing the same

A press forming apparatus, for metal separators for fuel cells, has a pair of peripheral portion holding dies which hold a peripheral portion of a material and are movable toward and counter to each other; a pair of intermediate portion forming dies for forming a intermediate portion of the material, which are disposed inside the peripheral portion holding dies and are movable toward and counter to each other; and a pair of center portion forming dies for forming a center portion of the material, which are disposed inside the intermediate portion forming dies and are movable toward and counter to each other, wherein one of the peripheral portion holding dies and one of the intermediate portion forming dies are fixed to each other, one of the center portion forming dies is movable with respect to one of the intermediate portion forming dies toward the material, the other intermediate portion forming die and the other center portion forming die are fixed to each other, and the other intermediate portion forming die is movable with respect to the other peripheral portion holding die.

Press forming apparatus for fuel cell metal separator

An annular-shaped heat exchanger,provided with a high-temperature fluid passage inlet,at one end in the axial direction and a low-temperature fluid passage inlet,at the other end in the axial direction is supported inside a cylindrical outer casing,via a heat exchanger supporting ring,. The heat exchanger supporting ring,connecting a low-temperature section near the low temperature fluid passage inlet,of the heat exchanger,and a rear flange,of the outer casing,is formed by bending a plate member in a cross-sectionally step shape so that it can readily undergo elastic deformation to offset the thermal expansion of the heat exchanger,. This ensures positive sealing between the high-temperature fluid passage inlet,and the low-temperature fluid passage inlet,of the heat exchanger,while minimizing the thermal stress occurring in the heat exchanger,and the outer casing,. The heat exchanger supporting ring,also has a function of partitioning between a combustion gas passage inlet,and an air passage inlet

Supporting structure for heat exchanger

Heat exchanger

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Wako, Japan

Toshiki Kawamura