Abstract: A molten salt battery includes an electrode group which includes a first electrode, a second electrode, and a separator electrically insulating the first electrode and the second electrode; a molten salt electrolyte; a bottomed case which houses the electrode group and the molten salt electrolyte, the bottomed case having an opening; a cover plate which seals the opening of the case; a first external terminal of the first electrode and a second external terminal of the second electrode which are provided on the cover plate; a bus bar component fixed to the first external terminal; a first insulating part which is interposed between the first external terminal and the bus bar component so as to electrically insulate the bus bar component and the first external terminal; a thermal fuse component which is electrically connected to the bus bar component and the first external terminal and provides electrical continuity between the bus bar component and the first external terminal when the ambient temperature is l

Abstract: An electricity storage device includes a case and two electrode terminal portions provided in a cover plate of the case. Each of the electrode terminal portions includes (a) a bolt-shaped electrode terminal that has a head portion and a threaded portion and is inserted into a corresponding terminal hole of the cover plate from the inner side of the case, (b) a ring-shaped first gasket between the electrode terminal and a circumferential portion of the corresponding terminal hole, (c) a nut that fixes the electrode terminal to the cover plate, (d) a washer between the nut and the cover plate, (e) a second gasket between the washer and the cover plate, and (f) a third gasket disposed between the head portion of the electrode terminal and the cover plate.

Abstract: A rectangular electricity storage device includes a prism-shaped electrode group with an upper surface, a lower surface, and four lateral surfaces, the electrode group including a positive electrode, a negative electrode, and a separator interposed between the positive electrode and the negative electrode; an electrolyte; a case with an opening portion, the ease housing the electrode group and the electrolyte; a cover plate covering the opening portion of the case; and an insulation sheet interposed between the electrode group and the case, and insulating the electrode group and the case from each other, wherein the insulation sheet is folded so as to surround the lower surface and the four lateral surfaces of the electrode group.

Abstract: A molten salt battery includes an electrode group which includes a first electrode, a second electrode, and a separator electrically insulating the first electrode and the second electrode; a molten salt electrolyte; a bottomed case which houses the electrode group and the molten salt electrolyte, the bottomed case having an opening; a cover plate which seals the opening of the case; a first external terminal of the first electrode and a second external terminal of the second electrode which are provided on the cover plate; a bus bar component fixed to the first external terminal; a first insulating part which is interposed between the first external terminal and the bus bar component so as to electrically insulate the bus bar component and the first external terminal; a thermal fuse component which is electrically connected to the bus bar component and the first external terminal and provides electrical continuity between the bus bar component and the first external terminal when the ambient temperature is l

Abstract: Disclosed is a rectangular battery in which an electrode group formed by winding a first electrode and a second electrode with a separator interposed therebetween is housed in a battery case having an opening sealed by a sealing plate. The first electrode is electrically connected to the sealing plate, and the second electrode is electrically connected to a current collector plate provided between the sealing plate and the electrode group and extending along a longer side direction of the sealing plate. The sealing plate has a lower-strength portion configured to be deformed prior to the other portions of the sealing plate to provide a contact between the sealing plate and the current collector plate when the sealing plate receives an external pressure along the longer side direction of the sealing plate.

Abstract: In a rectangular electricity storage device, a first electrode group and a second electrode group that are housed in an outer package can 2 are respectively provided with a first terminal portion and a second terminal portion that extend from end surfaces 13 toward an opening 21 of the outer package can 2, the end surfaces 13 facing the opening 21. The first electrode group and the second electrode group are mechanically and electrically coupled to each other by a connection member. Specifically, the connection member includes a first connecting portion welded to the first terminal portion, a second connecting portion welded to the second terminal portion, and a coupling portion that mechanically and electrically couples the first connecting portion and the second connecting portion to each other. An inner surface 31 of a cover plate 3 is provided with a projecting portion that extends from the inner surface 31 toward a bottom surface of the outer package can 2.

Abstract: A method for producing a sealed type electricity storage device includes: a step of preparing a bottomed outer can; a step of preparing a sealing plate having a periphery corresponding to an opening of the outer can, the sealing plate having a first recess in one surface of the periphery and having a tapered second recess in the other surface of the periphery, the first recess being configured to fit into an opening edge portion of the outer can; a step of closing the opening of the outer can with the sealing plate; and a step of welding the opening edge portion of the outer can and the periphery of the sealing plate by irradiating a boundary between the opening edge portion of the outer can and the periphery with a laser beam.

Abstract: A sealing structure comprises a sealing plate having an injection hole, and a sealing plug for sealing the injection hole, and the sealing plug has a press-fitted member including an elastic material and press-fitted into the injection hole to block the injection hole, and a plate-shaped holding member for applying pressure to the press-fitted member so that the press-fitted member is held in a state of being press-fitted into the injection hole, the plate-shaped holding member being bonded to the sealing plate. The press-fitted member has a plate-shaped base which has a larger diameter than that of the injection hole and is in contact with the holding member at one principal surface, and a protruding part which is provided so as to protrude from the other principal surface of the base and is inserted into the injection hole.

Abstract: Disclosed is a rectangular battery in which an electrode group formed by winding a first electrode and a second electrode with a separator interposed therebetween is housed in a battery case having an opening sealed by a sealing plate. The first electrode is electrically connected to the sealing plate, and the second electrode is electrically connected to a current collector plate provided between the sealing plate and the electrode group and extending along a longer side direction of the sealing plate. The sealing plate has a lower-strength portion configured to be deformed prior to the other portions of the sealing plate to provide a contact between the sealing plate and the current collector plate when the sealing plate receives an external pressure along the longer side direction of the sealing plate.

Abstract: The sealing assembly for closing the open end of a cell case is formed with a connection electrode protruding outwards in the axial direction of the cell. The connection electrode of one of two adjacent cells is directly connected by welding to the bottom surface of the cell case of the other cell through a plurality of projections, for connecting the two cells in series.

Abstract: In the description, a hydrogen storage alloy electrode comprising a hydrogen storage alloy and a conductive metal and completely free of organic binder is disclosed, wherein at least two layers of an active material holding layer and a conductive metal layer essentially are integrated into an electrode sheet having a conductive network communicating throughout the electrode. The electrode can be used in a nickel-metal hydride storage battery, for example, particularly exhibits high efficiency charge/discharge characteristics while satisfying general characteristics as a battery, and has a relatively low cost and facilitates recycling.