Abstract: A battery module is constructed with a plurality of prismatic cells. Each cell comprises a prismatic cell case having short lateral walls and long lateral walls, a group of electrode plates constituted by laminating a plurality of positive and negative electrode plates parallel to the long lateral walls of the cell case with intervening separators therebetween, and collector plates of positive and negative polarities, respectively bonded to the positive and negative electrode plates at lateral opposite ends of the group of electrode plates. Connection projections are formed on the collector plates, these being fitted into corresponding holes in the short lateral walls of the cell case, whereby the collector plates are fixed on the short lateral walls of the cell case.

Abstract: In a battery pack 1 wherein prismatic battery modules 2 are arranged parallel with each other, cooling passages 7 are formed by interposing spacers 6 made of metallic material between mutually facing long side faces 2a, 2a of the battery modules 2, 2.

Abstract: A sealed storage battery includes a battery case containing a group of electric power-generating elements each comprising a positive electrode, a negative electrode and a separator, a battery case lid closing an opening in the battery case to seal the battery case, and a safety valve of the assembling type mounted on the battery case lid. The safety valve is welded to the battery case lid. With this construction, a hermetic seal at an area of contact between the safety valve and the battery case lid is enhanced, and also the reliability of the safety valve is enhanced.

Abstract: A sealed storage battery includes a battery case containing a group of electric power-generating elements each comprising a positive electrode, a negative electrode and a separator, a battery case lid closing an opening in the battery case to seal the battery case, and a safety vent of the assembling type mounted on the battery case lid. The safety vent is welded to the battery case lid. With this construction, a hermetic seal at an area of contact between the safety vent and the battery case lid is enhanced, and also the reliability of the safety vent is enhanced.

Abstract: A battery container for containing battery elements includes large thickness sections formed on the outer rims of walls that compose the container and small thickness areas formed in the areas surrounded by the large thickness sections. A spacer that is formed of straight-line ribs, a combination of latticed ribs and projections, cylindrical projections or the like is disposed on the small thickness areas and the outer surface of the spacing means protruded out of the outer surfaces of the large thickness sections, thereby ensuring the mechanical strength and durability of the container and at the same time allowing cooling air to circulate efficiently along the walls of the battery envelope. This facilitates the transfer of heat produced inside of the battery to the outside.

Abstract: An air bag device comprises an air bag. The bag has a mouth portion which includes first and second outside sewed parts and a center non-sewed part. Each outside sewed part is provided by sewing mutually facing side end sections of the mouth portion and the center non-sewed part includes two mutually facing center end sections each having bolt openings. An elongate gas generator has bolts extending therefrom. The gas generator is substantially entirely received in the mouth portion having the bolts exposed to the outside through the bolt openings of the two mutually facing center end sections. A housing is employed for receiving a unit including the air bag and the gas generator. The housing has bolt openings through which the bolts pass. Nuts are engaged with the bolts to secure the unit to the housing.

Abstract: A sealed secondary cell maintaining enclosed property and battery performance for a long period in a wide range of environments of use including high temperature, high humidity, and vibration is presented. A terminal pole is composed of a current collector, a flange with a flat top surface, and a pole formed on the flange upper surface projecting at right angle, a rotation arresting portion of the terminal pole is formed by the flange and lower side of a lid, an annular packing is disposed between the flange upper surface and lid lower side so as to surround the pole, an annular pressing spring is pressed in from above the pole, the annular packing interposed between the flange upper surface and lid lower side is compressed in the vertical direction by the elastic force of the annular pressing spring, the annular pressing spring is stopped on the outer circumferential edge of the pole at a position for sealing and fixing the terminal pole in the lid, and thereby the battery jar is enclosed.

Abstract: A long-life sealed rechargeable battery employing a plastic battery container in use for electric vehicles and the like, wherein at least one tube having the bottom is formed under the cover, the closed end of the tube is either brought as close as possible to the upper edge of the electrode group or put into direct contact with a lead tab of the positive or negative electrode, and a temperature sensor is inserted and fixed inside the tube in such a way that the temperature sensing part comes into direct contact with the inner surface of the closed end of the tube, thereby capable of measuring from the outside temperature variation in the cell so as to control charge and discharge.

Abstract: A sealed and prismatic storage battery characterized by such features as a high volumetric energy density, high compressivity and the like is provided. A battery case has an inner surface and an outer surface of each respective corner section formed of a curvature. The thickness of the corner section is 2.5 mm, a radius of curvature of the outer surface is 5.0 mm, a radius of curvature of the inner surface is 2.5 mm, and a thickness of a small thickness section between the corner section and the flat plane section is 2.0 mm. The position of the thinnest wall section coincides with a position where the radius of a circular arc forming the inner surface of the corner section crosses perpendicularly the outer side surface of the battery case.

Abstract: A casing of sealed alkaline storage battery to be stacked in plural number in one direction, each provided with a safety vent; each casing is made of a polymer alloy which mainly comprises polyphenylene ether, polystyrene and an elastomer; at least one outersurface of the casing has a plurality of vertical protrusion ribs thereby to form vertical ventilation spaces through which a cooling medium passes; the vertical ribs formed on an outer surface of the casing have a protrusion height of 1 to 2 mm, the interval between ribs of 7 to 15 mm, rib width of 3 to 10 mm; thickness of inter-rib portion of casing are 1 to 3 mm, and those at the parts of short side walls 2 to 4 mm.

Abstract: A storage battery assembly includes a plurality of electrochemical cells bundled in side-by-side fashion together in a row and electrically connected in series with each other by means of generally elongated electroconductive connecting pieces each connecting a pole terminal of a pair of pole terminals of an electrochemical cell with another pole terminal of a pair of pole terminals of a next adjoining electrochemical cell. Each electrochemical cell includes a generally rectangular box-like electrolyte vessel having an opening, an electrode structure accommodated within the electrolyte vessel and including positive electrode plates and negative electrode plates, a quantity of electrolyte accommodated within the electrolyte vessel, a top lid enclosing the opening of the electrolyte vessel, and pole terminals protruding outwardly from the respective top lid.

Abstract: The present invention provides a sealed alkaline storage battery comprising a container of polymer alloy mainly comprised of PPE and an olefin resin and containing PPE of 20-60 wt %, or a composite material of polymer alloy containing PPE and an inorganic powder of 5-50 wt %. Using this material as a container, it is possible to restrict decrease in an amount of electrolyte thereby providing a sealed alkaline storage battery having a long life, which is possible to guarantee a maintenance-free long life of 7-10 years.

Abstract: A layer-built sealed alkaline storage battery includes plural rectangular cell units 11. Those cell units 11 are arranged in a row and united together with a pair of end plates 1 and 2 arranged at the opposite sides of the assembly of the cells by belt-like clamp bands 37, 38 each extending cross from one of the end plates 1 through the cell units 11 to the other of the end plates 2 and being fixed at the end thereof on the end plates 1, 2. Each end plate 1 or 2 is of one-piece structure having 1) a generally rectangular panel portion or portions 26 and 2) a peripheral wall frame 26 and 3) reinforcement ribs 23a to 23c, so that the assembly of the cell can be united so as to be prevented from deformation due to expansion and vibration of the cells.

Abstract: A cell for sealed nickel-metal hydride storage battery having a high energy density and a long cycle life is disclosed. It comprises a battery casing made of a synthetic resin which accommodates a power-generating unit including a hydrogen storage alloy negative electrode whose hydrogen equilibrium pressure is 0.01-0.1 MPa at 45.degree. C., when H/M=0.5, and a lid for sealing an open end of the casing provided with a safety vent whose operation pressure is 0.2-0.8 MPa. A pressure-resistant strength of the battery casing is in a range of 0.7-2.0 MPa and set higher than the operation pressure of the safety vent by 0.5 MPa or more.

Abstract: A sealed storage battery has a rectangular casing (3) and a lid (2) of synthetic resin, which are connected by welding so as to seal an opening of the rectangular casing (3), and protruded portion on the outer welded portion (5) is removed and smoothed so that air as a cooling module is smoothly flown in spaces formed by ribs (4) on the battery casing (3) and the lid (2).

Abstract: In the module battery, by disposing end plates including a flat plate portion and a rectangular frame portion at each end of a cell group and by binding the cell group by means of binding members and metal studs, the increase of the internal pressure during the charging/discharging cycles and the dimensional change of the module battery due to the expansion of the cell group can be suppressed, while the weight and volume increase caused by the binding members is minimized.

Abstract: The present invention provides a unit battery of sealed alkaline storage battery comprising a plurality of cells each of which comprises a container in which are inserted an alkali electrolyte and an electrode group comprising a plurality of positive plates and a plurality of negative plates with separators provided between the adjacent plates and which is sealed by a cap provided with a safety valve, the adjacent cells being electrically connected, wherein at least a part of the outermost portion of the electrode group in the cell contacts with the container, the adjacent cells contact with each other at at least a part of their container and a space through which air can pass in at least one direction is provided between the adjacent cells, the unit battery being constrained by holders at a part or the whole surface of both ends in the direction of arranging of the cells.

Abstract: A safety vent body having a passage at the center of the bottom surrounded by a circular protrusion, a safety vent cover having a vent hole bonded to the safety vent body, and an elastic valve component consisting of valve seat and rubber pad bonded together into a one-piece structure and a coil spring, housed in a space provided by the safety vent body and the safety vent cover. A plastic container sealed alkaline rechargeable battery realizes a longer cycle life and high reliability by incorporating a resealable safety vent in accordance with the present invention.

Abstract: A module battery of sealed alkaline storage battery comprises a plurality of cells stacked in one direction each of which comprises a battery casing of a synthetic resin, an electrolyte and an electrode group accommodated in the battery casing and a lid with a safety bent sealingly fitted to the opening of the battery casing; wherein the cells are bound in the direction of stacking by binding members for coupling the end plates at the ends of the stacked battery assembly to each other; the cells are butted to each other by a plurality of parallel ribs formed on the outer surface of the battery casing along the direction of stacking thereby to form spaces for allowing air flow between the cells, a thickness of the side wall of the battery casing along the direction of stacking is 1 to 3 mm, a rib height 1 to 2 mm, a rib interval 10 to 15 mm, and a rib width 3 to 10 mm.