Kabushiki Kaisha Toshiba

Toshio Maeda

Hiroyuki Takahashi

Katsumi Hisano

Hideo Iwasaki

Tomiya Sasaki

Michio Hori

Hiroyasu Yoshizawa

Koichiro Kawano

Kazuo Ogawa

Ko Minakami

Kenji Isobe

Mitsuo Noguchi

Toshinori Terashima

A heat sink according to the invention comprises a multilayered body prepared by laying one upon the other a plurality of heat sink fin elements having pin-fin sections formed by cutting a number of slits through thin plates of a thermally conductive material with spacers, each being inserted between two adjacent heat sink fin elements to separate them by a given distance. The method of preparing a heat sink comprises steps of preparing heat sink fin elements by forming a number of slits and a surrounding marginal frame area in each of a first set of thermally conductive thin plates, preparing spacers by cutting out a central area of and forming a surrounding marginal frame area in each of a second set of thermally conductive thin plates having a shape same as that of the first set of thin plates, laying said heat sink fin elements and said spacers alternately one upon the other and bonding said assembled heat sink fin elements and spacers together at the outer surface or contacted areas to form a multilayered body.

Heat sink and the producing method thereof

Unit cells and separator elements are stacked in layers, thus constituting a stacked structure of a fuel cell. A first segment channel, which is bored through the peripheral region of each separator element, communicates with a second segment channel formed in a cylindrical seal member which is joined to each two adjacent separator elements. Thus, manifolds for the intake and exhaust of a fuel gas and an oxidant gas are defined. The cylindrical seal member includes a pair of ring-shaped metal members joined to each two adjacent separator elements and a ring-shaped insulating member interposed between the metal members. Thus, the gases in the manifolds can be prevented from leaking out, and the adjacent separator elements are insulated from one another.

Fuel cell

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Yokohama, Japan

Toshio Maeda