Abstract: 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.

Abstract: A bipolar plate is a bipolar plate for a battery, the bipolar plate having a positive electrode disposed on a first surface side thereof and a negative electrode disposed on a second surface side thereof, wherein at least one of the first surface and the second surface is provided with a flow path through which an electrolyte flows. The flow path includes an introduction port for the electrolyte, a discharge port for the electrolyte, and a groove section which is located between the introduction port and the discharge port and guides the electrolyte to a predetermined route. The groove section includes a plurality of vertical groove sections which extend in a vertical direction and are arranged in parallel in a direction orthogonal to the vertical direction when the bipolar plate is placed at a predetermined position in the battery.

Abstract: A polyisocyanate composition includes at least a pentamethylenediisocyanate derivative. The polyisocyanate composition contains 5 mass % or more and 95 mass % or less of a uretdione derivative composed of an isocyanate bimolecular-product of pentamethylenediisocyanate.

Abstract: A frame body for a redox flow battery is provided with a window. The expressions A>C, B>D, and (B/A)?0.2 are satisfied, where A represents the length of a long side of a rectangle that envelops the window, B represents the width of a horizontal frame corresponding to the long side, C represents the length of a short side of the rectangle, and D represents the width of a vertical frame corresponding to the short side.

Abstract: 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.

Abstract: A coil winding device includes a wire rod delivering machine configured to deliver a wire rod through a nozzle, a wire storing jig configured to store the wire rod delivered from the nozzle, a wire-wound member around which the wire rod is wound, a wire-wound-member rotation mechanism configured to rotate the wire-wound member to wind the wire rod delivered from the nozzle around the wire-wound member, and a wire-storing-jig turning mechanism configured to turn the wire storing jig around a rotation axis of the wire-wound member to wind the wire rod delivered from the wire storing jig around the wire-wound member. The rotation axis of the wire-wound member and a wire-storing central axis of the wire storing jig are mutually orthogonal.

Abstract: An image forming apparatus capable of preventing a job from being forcibly terminated when it is unnecessary to remove a removable unit, and thereby reducing downtime. The image forming apparatus is provided with a drawer unit as a movable unit, which can be drawn out from the apparatus, and a lock unit that can be switched between a locking state in which the drawer unit is inhibited from being drawn out and an unlocking state in which the drawer unit is allowed to be drawn out. When a jam occurs at a position outside a predetermined range in which it is necessary to draw out the drawer unit to perform jam processing, the job interrupted due to the jam is resumed after completion of jam processing without forcibly terminating the job even when the unlocking state of the lock unit is not detected.

Abstract: An electrolyte-circulating battery according to the present invention includes a cell frame including a bipolar plate in contact with an electrode that forms a battery cell, and a frame that surrounds a peripheral edge of the bipolar plate; and a sealing member that is disposed on the frame and that prevents an electrolyte supplied to the battery cell from leaking out of the frame. The frame has a seal groove in which the sealing member is fitted. The seal groove includes a narrow section that causes the sealing member to elastically deform to prevent the sealing member from becoming detached from the seal groove. The narrow section has a width that is uniform in a depth direction of the seal groove.

Abstract: In a self-repairing polyurethane resin material produced by reaction of pentamethylenediisocyanate with an active hydrogen group-containing compound, the active hydrogen group-containing compound contains a polyol compound having a number average molecular weight of 100 to 2000 and an average functionality of 2 to 3.

Abstract: A self-repairing polyurethane resin material is produced by reaction of a polyisocyanate compound consisting of aliphatic polyisocyanate and/or araliphatic polyisocyanate with an active hydrogen group-containing compound, used for producing polyurethane resin having self-repairing properties, has an isocyanate group at its molecular terminal, contains an allophanate group and an isocyanate trimer, and the mole ratio of the allophanate group relative to the isocyanate trimer is 0.1 to 20.

Abstract: A polyisocyanate composition is produced by reaction of bis(isocyanatomethyl) cyclohexane with trimethylolpropane, and contains a trimethylolpropane-monomolecular-body obtained by reaction of three molecules of bis(isocyanatomethyl) cyclohexane with one molecule of trimethylolpropane, and a trimethylolpropane-bimolecular-body obtained by reaction of five molecules of bis(isocyanatomethyl) cyclohexane with two molecules of trimethylolpropane; and the molar ratio of trimethylolpropane-monomolecular-body relative to trimethylolpropane-bimolecular-body (trimethylolpropane-monomolecular-body/trimethylolpropane-bimolecular-body) contained in the polyisocyanate composition is 1.5 or more and 4.5 or less.

Abstract: Provided are a battery cell that can be produced efficiently. A frame body of each cell frame of a battery cell includes an inner peripheral recessed portion formed by reducing a thickness of a peripheral portion that surrounds an entire perimeter of the penetrating window so that the peripheral portion has a smaller thickness than other portions of the frame body. A bipolar plate of the battery cell includes an outer peripheral engaging portion that engages with the inner peripheral recessed portion, the outer peripheral engaging portion being a portion having a particular width and extending throughout an entire outer periphery of the bipolar plate.

Abstract: 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.

Abstract: 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.

Abstract: The battery cell for a flow battery includes a cell frame including a frame including a through-window and a manifold serving as an electrolyte flow path, and a bipolar plate blocking the through-window; a positive electrode disposed on one surface side of the bipolar plate; and a negative electrode disposed on another surface side of the bipolar plate. In this battery cell, in the frame, a thickness of a portion in which the manifold is formed is defined as Ft; in the bipolar plate, a thickness of a portion blocking the through-window is defined as Bt; in the positive electrode, a thickness of a portion facing the bipolar plate is defined as Pt; in the negative electrode, a thickness of a portion facing the bipolar plate is defined as Nt; and these thicknesses satisfy Ft?4 mm, Bt?Ft?3.0 mm, Pt?1.5 mm, and Nt?1.5 mm.

Abstract: A cell frame for a redox flow battery comprises: a bipolar plate; and a frame body provided at an outer periphery of the bipolar plate, the frame body including a manifold which penetrates through front and back surfaces of the frame body and through which an electrolyte flows, and at least one slit being formed on the front surface of the frame body and forming a channel of the electrolyte between the manifold and the bipolar plate, a cross sectional shape of the slit, in a longitudinal direction of the slit, having a width w and a depth h, the width w and the depth h satisfying (A) w?3 mm and (B) 1/8<h/w<1.

Abstract: 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.

Abstract: A winding device includes a nozzle holding mechanism for holding a plurality of nozzles in substantially parallel with each other, a nozzle rotation driving mechanism for rotating the nozzle holding mechanism about a rotation axis being substantially parallel with the plurality of nozzles, a spool supporting mechanism for supporting a plurality of spools in substantially parallel with each other, a spool rotation driving mechanism for rotating the spool supporting mechanism about a rotation axis being substantially parallel with the plurality of spools and being coaxially with or substantially parallel with the rotation axis of the nozzle holding mechanism, and a control unit for controlling the spool rotation driving mechanism in such a manner as to rotate the spool supporting mechanism in synchronism with rotation of the nozzle holding mechanism.

Abstract: A magnetic stimulator includes a coil which applies magnetic stimulation to a head of a living body, an intensity controller which controls an intensity of the magnetic stimulation applied by the coil, an acquiring section which acquires a biological signal from the living body, a detector which detects an adverse event of the living body from the biological signal acquired by the acquiring section, and an intensity suppressing section which, when an adverse event of the living body is detected by the detector, suppresses the intensity of the magnetic stimulation that is controlled by the intensity controller.