Sumitomo Electric Industries, Limited

Kenji Motoi

Takeshi Yamana

Takashi Kanno

Hayato Fujita

Tatsuoki Nagaishi

Ryosuke Hata

Masayuki Hirose

Takashi Yamaguchi

Masaya Konishi

Hideyuki Yamaguchi

Atsuo Ikeuchi

Ikeuchi Atsuo

Kanno Takashi

A superconducting wire includes a substrate and a superconducting material layer. The substrate includes a first main surface and a second main surface opposite to the first main surface. The superconducting material layer is disposed on the first main surface. Along at least a part of the superconducting wire in a direction in which the superconducting wire extends, the superconducting material layer is disposed to cover a side surface of the substrate in a width direction of the substrate and cover at least a part of the second main surface. A thickness of the superconducting material layer located on the first main surface varies along the width direction. A maximum thickness of the superconducting material layer located on the second main surface is smaller than a maximum thickness of the superconducting material layer located on the first main surface.

Superconducting wire

A bipolar plate is disposed between a positive electrode and a negative electrode of a redox flow battery. The bipolar plate has, in a surface of the bipolar plate facing at least one of the positive electrode and the negative electrode, a plurality of grooves through which an electrolyte flows and a ridge positioned between the adjacent grooves. The bipolar plate includes rough surfaces which are disposed in at least parts of groove inner surfaces defining the respective grooves and surface roughness of which represented by arithmetic mean roughness Ra is 0.1 &#x3bc;m or larger.

Bipolar plate, cell frame, cell stack and redox flow battery

A cell stack including; a stacked body including a plurality of cell frames each having a bipolar plate whose outer periphery is supported by a frame member; and a pair of end plates that tighten the stacked body from both sides of a stacking direction thereof, wherein an area S [cm] of each cell frame as viewed from the stacking direction of the stacked body and a length W [mm] in the stacking direction of the stacked body satisfies a relationship 0.05&#x2264;W/S&#x2264;0.9.

Cell stack and redox flow battery

A battery according to an embodiment of the present invention includes: a plurality of tanks () storing electrolyte containing ions of which valence is changed; a cell () configured to cause oxidation-reduction of the electrolyte so as to be charged or discharged; a pipe () connecting the plurality of tanks and the cell; and a pump () configured to circulate the electrolyte between the plurality of tanks and the cell through the pipe. The battery according to an embodiment of the present invention includes a container () housing the plurality of tanks (), the cell (), the pipe (), and the pump (). The container has a bottom (), a side (), and a top (). Accordingly, the battery in an embodiment of the present invention can be installed easily and its installation area can be reduced.

Container-type battery

A frame body for a cell frame of a redox flow battery, the frame body including an outer peripheral portion, the outer peripheral portion including a thin region whose thickness gradually decreases in a direction from the center of the frame body toward the outer periphery of the frame body.

Frame body, cell frame, cell stack, and redox flow battery

There is provided a frame body used for a cell of a redox flow battery, that can improve heat dissipation of an electrolyte in a slit and can suppress rise of the temperature of the electrolyte. It is a frame body used for a cell of a redox flow battery, comprising: an opening formed inside the frame body; a manifold allowing an electrolyte to pass therethrough; and a slit which connects the manifold and the opening and forms a channel of the electrolyte between the manifold and the opening, the slit having a pair of sidewalls facing each other in a cross section orthogonal to a direction in which the electrolyte flows, the slit having, at at least a portion thereof in the slit's depthwise direction, a width narrowing portion allowing the sidewalls to have a spacing narrowed in the depthwise direction.

Frame body, cell frame for redox flow battery, and redox flow battery

A frame body that is a part of a flat cell frame for a cell stack of a redox flow battery, and that supports, on an outer peripheral side of a bipolar plate of the cell frame, the bipolar plate,

There is provided a frame body used for a cell of a redox flow battery, that can improve heat dissipation of an electrolyte in a slit while reducing a shunt current loss through the electrolyte, and can also suppress strain caused at a slit formation portion. It is a frame body used for a cell of a redox flow battery, comprising: an opening formed inside the frame body; a manifold allowing an electrolyte to pass therethrough; and a slit which connects the manifold and the opening and forms a channel of the electrolyte between the manifold and the opening, the slit having at least one bent portion, the at least one bent portion having a radius of curvature of 2.0 mm or more and 200 mm or less.

The invention offers a submarine solid cable that can suppress the movement of the insulating oil when the cable is used and the production method thereof. The method of producing a submarine solid cable forms an insulating layer by lapping insulating tapes, each of which includes a resin film, over the outer circumference of a conductor and impregnates the insulating layer with medium-viscosity insulating oil. The insulating layer is formed by lapping insulating tapes, each of which includes a resin film, over the outer circumference of the conductor. The insulating layer is impregnated with an insulating oil having an at least medium viscosity. The resin film is swelled to narrow an impregnation path impregnated with the insulating oil. According to the production method, the impregnation path for the insulating oil is secured when the impregnation with the insulating oil is performed and the impregnation path is narrowed to suppress the movement of insulating oil when the cable is used. Thus, the cable can have excellent insulation properties.

Growing community of inventors

Osaka, Japan

Kenji Motoi