Abstract: A bipolar battery is provided with improved productivity and reliability of bonding between a positive electrode and a substrate (bipolar plate) or a negative electrode and the substrate. The bipolar battery includes a bipolar electrode including a positive electrode, a negative electrode, and a substrate having a first surface on which the positive electrode is provided and a second surface on which the negative electrode is provided. A first adhesion layer is provided between the bipolar plate and the positive electrode and/or between the bipolar plate and the negative electrode. A second adhesion layer is provided at the outer periphery of the first adhesion layer of the positive electrode and/or the negative electrode on which the first adhesion layer is provided. The bipolar plate is formed from resin, the first adhesion layer is formed from an adhesion sheet, and the second adhesion layer is formed from an adhesive cured product.

Abstract: A resin formed body obtained from a resin composition that contains a polypropylene resin and a cellulose fiber, the polypropylene resin partially containing an acid modified polypropylene resin, wherein the resin formed body has a diffraction peak derived from a polypropylene ?-crystal (040) plane at a position of a scattering vector s of 1.92±0.1 nm?1, a diffraction peak derived from a polypropylene ?-crystal (300) plane at a position of a scattering vector s of 1.83±0.1 nm?1, and a diffraction peak derived from a cellulose I? type crystal (004) plane at a position of a scattering vector s of 3.86±0.1 nm?1, observed in a wide-angle X-ray diffraction measurement, and wherein an orientation degree of the cellulose fiber in the resin formed body is larger than 0.1 and less than 0.8.

Abstract: Examples described herein relate to a molded article provided with a resin part formed with a polyolefin resin composite material, the polyolefin resin composite material containing a polyolefin resin and 10 to 150 parts by mass of cellulose based on 100 parts by mass of the polyolefin resin, wherein an area of an aggregate of the cellulose is less than 20,000 ?m2.

Abstract: A bipolar storage battery that can prevent outward leakage of an electrolytic solution and reduction of mechanical strength by strongly joining plates each holding a cell member, thereby ensuring hermeticity of the inside of a cell and the mechanical strength, and also making the bipolar storage battery compact while reducing the number of components. The bipolar storage battery includes an internal frame unit including a bipolar plate in which a positive pole is provided on one surface and a negative pole is provided on an other surface, and an internal rim is provided in an outer edge of the bipolar plate. A plurality of the internal frame units are stacked and adjacent internal rims are welded to each other. A ratio of a width of the internal rim to a depth of welding between the rims is between 2.7 times and 16.0 times, inclusive.

Abstract: Provided is a bipolar storage battery in which an electrolytic solution is less likely to enter the interface between a positive electrode and an adhesive layer. Thus, battery performance is less likely to be reduced even if growth occurs in the positive electrode due to corrosion by sulfuric acid contained in the electrolytic solution. The bipolar storage battery includes a bipolar plate including a support column configured to support adjacent plates to each other when stacked, a positive current collector bonded to one surface of the bipolar plate by an adhesive, a positive active material layer placed on the positive current collector, a negative current collector bonded to another surface of the bipolar plate by an adhesive, a negative active material layer placed on the negative current collector, and a cover plate covering a peripheral edge portion of the positive current collector.

Abstract: A bipolar storage battery includes a bipolar electrode including a positive electrode, a negative electrode, and a bipolar plate provided with the positive electrode on one surface and the negative electrode on another surface. The bipolar storage battery includes an adhesive provided between the one surface of the bipolar plate and the positive electrode to bond the positive electrode to the bipolar plate, and the adhesive is a liquid gasket. This configuration can provide a bipolar storage battery in which, even if corrosion by sulfuric acid contained in an electrolytic solution causes a growth in a positive electrode, the electrolytic solution is prevented from easily entering each part such as an interface between the positive electrode, an adhesive, and a communication hole, and battery performance is less likely to deteriorate.

Abstract: A bipolar battery includes a plurality of cell members, each including a positive electrode having a positive active material layer, a negative electrode having a negative active material layer, and an electrolyte layer interposed between the positive electrode and the negative electrode. The bipolar battery also includes a plurality of frame units respectively forming a plurality of cells respectively incorporating the plurality of cell members. Each of the plurality of frame units is a frame unit made of a light transmissive resin material. Two of the frame units made of the light transmissive resin material adjacent in a stacking direction of the cell members are welded and joined at a welded portion via a joining member made of a light absorbing resin material. This configuration can provide a bipolar battery capable of reliably preventing electrolytic solution leakage out of a cell by means of a simple seal structure.

Abstract: An electronic watch includes a time display, an antenna, a first substrate including a light-emitting element, a second substrate including a light-receiving element, a gear including a through hole passing light from the light-emitting element therethrough, the gear being disposed between the first and second substrates, and first and second conduction members electrically coupling the first and second substrates. The second substrate includes a first wiring electrically coupled to the first substrate via the first conduction member, and a second wiring electrically coupled to the second substrate via the second conduction member. Halfway on at least one of the first and second wirings, a circuit element is coupled in series that, compared to electrical resistance when a direct current flows in the wiring, increases electrical resistance when an alternating current generated by a radio wave received by the antenna flows in the wiring.

Abstract: A bipolar battery includes a plurality of cell members and a plurality of frame units respectively forming a plurality of cells respectively incorporating the plurality of cell members. The plurality of frame units includes frame units made of a light transmissive resin material and frame units made of a light absorbing resin material that are alternately arranged in a stacking direction of the cell members. The frame units made of a light transmissive resin material and the frame units made of a light absorbing resin material adjacent in the stacking direction of the cell members are joined at welded portions. This configuration can provide a bipolar battery capable of reliably preventing electrolytic solution leakage out of a cell by means of a simple seal structure.

Abstract: A bipolar electrode for a bipolar lead-acid battery includes a base plate with a conduction through hole, a positive electrode stuck to a first surface of the base plate with an adhesion layer, and a negative electrode stuck to a second surface of the base plate with an adhesion layer. The bipolar electrode includes a conductor disposed in the through hole and has a bonding portion to which the positive electrode is electrically bonded on a first surface of the conductor and has a bonding portion to which the negative electrode is electrically bonded on a second surface of the conductor. The conductor has a projecting portion surrounding the periphery of the bonding portion on both the first surface and the second surface. By preventing contamination of the bonding portion with an adhesive, the bonding reliability between a positive electrode lead layer and a negative electrode lead layer is improved.

Abstract: A bipolar storage battery includes a bipolar electrode including a positive electrode, a negative electrode, and a substrate provided with the positive electrode on one surface and the negative electrode on another surface. The bipolar storage battery includes a first adhesive provided between the one surface of the substrate and the positive electrode to bond the positive electrode to the substrate. The first adhesive is a conductive adhesive. This configuration can provide a bipolar storage battery in which battery performance is less likely to deteriorate by preventing an electrolytic solution from easily infiltrating an interface between a positive electrode and an adhesive layer even when growth occurs in the positive electrode due to corrosion by sulfuric acid contained in the electrolytic solution.

Abstract: A bipolar storage battery includes a bipolar electrode including a positive electrode, a negative electrode, and a bipolar plate provided with a positive electrode on one surface and a negative electrode on an other surface. The bipolar plate has a communication hole communicating the one surface and the other surface. A positive current collector and a negative current collector are electrically joined through the communication hole. A partition is provided in the space between an inner surface of the communication hole and a joint portion between the positive current collector and the negative current collector. This arrangement provides a bipolar lead-acid storage battery that prevents an electrolytic solution from reaching a negative electrode side as much as possible to greatly suppress the occurrence of liquid junction even when the electrolytic solution enters communication holes, so that the battery performance is less likely to deteriorate.

Abstract: A cellulose fiber reinforced thermoplastic resin formed body, containing a thermoplastic resin, a cellulose fiber and an organic fiber different from the cellulose fiber, in which, in the resin formed body, the content of the thermoplastic resin is 39 to 80 mass %, the content of the cellulose fiber is 5 to 55 mass %, and the content of the organic fiber different from the cellulose fiber is 4 to 35 mass %; and a method of producing the same.

Abstract: A bipolar electrode for a bipolar lead-acid battery includes a substrate (bipolar plate) in which a through hole for conduction is formed, a positive electrode bonded to one surface of the substrate with an adhesive layer, and a negative electrode bonded to another surface of the substrate with an adhesive layer. The substrate has, on each of the one surface and the other surface, a projecting portion surrounding an outer circumference of the through hole as an entry avoidance structure. The bipolar lead-acid battery includes multiple layers of the bipolar electrodes. By preventing adhesive from entering a through hole for conduction formed in a bipolar plate, the reliability of joining between a positive-electrode lead layer and a negative-electrode lead layer is improved.

Abstract: A bipolar lead storage battery includes a plurality of cell members laminated on one another, inner frames that each include a bipolar plate provided between the cell members, and a frame member (a rim) provided in an outer peripheral portion of the bipolar plate to rise in a thickness direction of the bipolar plate. The bipolar lead storage battery also includes a pair of outer frames respectively placed at opposite end portions in a lamination direction. The inner frames or the outer frames are made of fiber reinforced thermoplastic resin. The arrangement restrains deformation of an inner frame or an outer frame due to the pressure inside a cell and allows a reduced thickness of the inner frame or the outer frame.

Abstract: A bipolar battery includes a plurality of cell members and a plurality of frame units configured to form a plurality of cells individually housing the plurality of cell members. Each of the plurality of frame units has joining surfaces facing each other in the stacking direction of the cell members, which are joined to each other by a joining material. On outer side surfaces of the frame units adjacent to each other in the stacking direction, a groove is formed which communicates between the joining surfaces to be joined and opens to the outer side surfaces. A water sealing material is disposed in the groove. This arrangement provides a bipolar battery capable of reliably preventing an electrolyte from leaking out of a cell by a simple seal configuration.

Abstract: The present disclosure relates to a molded article provided with a resin part formed with a thermoplastic resin composition containing 5 to 70 parts by mass of cellulose based on 100 parts by mass of the thermoplastic resin and containing an organic peroxide, wherein a tensile strength of a resin molded body formed with the thermoplastic resin composition measured in accordance with JIS K 7161 is 40 MPa or more.

Abstract: A bipolar lead-acid battery is described in which the electrolyte is less likely to infiltrate the interface between a positive electrode lead layer and an adhesive layer so that deterioration in battery performance is less likely to occur. A positive electrode of a bipolar electrode of the battery includes a positive electrode lead layer disposed on one surface of a substrate. An adhesive layer is disposed between and bonds the one surface and the positive electrode lead layer. The substrate is formed of a thermoplastic resin, and the adhesive layer is a cured product of a reaction-curing type adhesive that is cured by reaction between a main agent containing an epoxy resin and a curing agent containing an amine compound. Even when immersed in sulfuric acid with a concentration of 38% by mass at a temperature of 60° C. for four weeks, the sulfuric acid does not infiltrate the interface.

Abstract: A bipolar storage battery is described in which, even when growth occurs in a positive electrode due to corrosion caused by sulfuric acid contained in an electrolytic solution, the electrolytic solution has difficulty penetrating an interface between the positive electrode and an adhesive and battery performance is hard to decrease. The bipolar storage battery includes a bipolar electrode including a positive electrode, a negative electrode, and a bipolar plate in which the positive electrode is provided on one surface and the negative electrode is provided on the other surface. The bipolar electrode includes a covering member configured to cover a peripheral part of an opposite surface of the positive electrode in close contact with the peripheral part, the opposite surface being opposite to a surface, of the positive electrode, bonded to the bipolar plate.

Abstract: A bipolar battery that can achieve both a hermetic seal and mechanical strength and increases energy density is described. The bipolar lead acid battery includes an outer wall integrally projected along a peripheral edge on a facing surface of one frame-plate out of a pair of the frame-plates facing each other and a joining wall integrally projected on a facing surface of the other frame-plate out of the pair of the frame-plates facing each other. The joining wall is positioned inwardly from the outer wall of the one frame-plate and surrounds a peripheral edge of a cell member. The joining wall is joined to the facing surface of the one frame-plate by a joining material.