Abstract: This invention pertains to electrochemical cells, and anode cans used therein, wherein edge regions of respective anode cans are toed-in. The anode can includes a top wall, and a first side wall depending downwardly from the top wall. The first side wall has an edge region remote from the top wall. The cathode can has a bottom wall, and a second side wall extending upwardly from the bottom wall. The edge region of the first side wall is displaced inwardly of the outer surface of the first side wall as defined at locations away from the edge region. Thus, the edge region is toed-in. Generally, the first side wall follows a path from an intermediate element of the first side wall to a distal edge of the first side wall, wherein no element of the path is directed toward the top wall. The invention further comprehends methods of making the above metal anode cans, and cells.

Abstract: A non-aqueous electrolyte battery wherein the battery element comprising a cathode, an anode and separator, is housed and sealed completely into a cylindrical metallic casing after being impregnated with electrolyte, and said battery is featured by that the opening of its casing is sandwiched between and closed by the insulating gasket placed at the internal surface, and the metallic reinforcement placed at the external surface.

Abstract: An electrochemical cell containing a snap-through sealing gasket that has a compressive preloading on a selected area of the snap-through gasket to prevent premature venting of the cell.

Abstract: An electrochemical cell containing a V-shaped gasket for sealing the cell and preferably the gasket has a compressive preloading on a selected area of the gasket to prevent premature venting of the cell.

Abstract: This invention pertains to electrochemical cells, and anode cans used therein, wherein edge regions of respective anode cans are toed-in. The anode can includes a top wall, and a first side wall depending downwardly from the top wall. The first side wall has an edge region remote from the top wall. The first side wall comprises a curl at the edge region. The edge region comprises a first portion of the first outer surface on the curl. The first portion of the first outer surface is displaced from a first downward projection of the first outer surface of the first side wall as defined at a maximum perimeter element of the intermediate region. Thus, the edge region is toed-in. Generally, the first side wall follows a path from an intermediate element of the first side wall to a bottom edge of the first side wall, and a reverse curl extending from the bottom edge toward the top wall. The cathode can has a bottom wall, and a second side wall extending upwardly from the bottom wall.

Abstract: An alkaline storage battery including a bottomed cell casing assembled as either one of positive and negative terminals, a closure cap assembly coupled with an opening of the cell casing in a liquid-tight manner as the other terminal to hermetically seal the interior of the cell casing and a generator element composed of positive and negative electrodes assembled within the cell casing, wherein a current collecting plate extended from either one of the positive and negative electrodes is welded at least at two spaced portions thereof with a bottom surface of the closure cap assembly to enhance mechanical strength and the vibration resistance property of the storage battery and to reduce internal resistance of the storage battery.

Abstract: The present invention is directed to a novel electrode edge having a full radius shape used in combination with a novel terminal lead/current collector connection to increase both the gravimetric and volumetric energy densities of the cell by occupying previously unused space within the casing.

Abstract: A button-type battery includes, a) an anode; b) a cathode positioned adjacent to the anode; c) an electrolyte between the anode and the cathode; d) a conductive first terminal housing member in electrical contact with one of the anode or the cathode; the first terminal housing member having a periphery; e) a conductive second terminal housing member in electrical contact with the other of the anode or the cathode; the second terminal housing member having a periphery; f) the first and second terminal housing members forming an enclosed housing which holds and protects the anode, the cathode and the electrolyte; and g) the first and second terminal housing member peripheries being configured together to form an electrically insulative seal which seals the anode, the electrolyte and the cathode within the housing formed by the first and second terminal housing members, the electrically insulative seal comprising cross-linked butyl rubber.

Abstract: Unitary fill port and terminal constructions and methods for filling and sealing are disclosed for electrical devices comprising liquids. The invention is particularly suited for use in prismatic batteries comprising non-aqueous organic electrolytes.

Abstract: A battery sealing structure is provided, which can provide an excellent seal for a battery. The sealing structure has an explosion-proof function and contributes to improved battery assembling operation efficiency. A three-part stack, including a cap member (3), a PTC element (4) and a safety valve (5), is inserted in a gasket (8). The safety valve has the same outer diameter as the cap member (3) and has a breakable portions capable of being broken in the event of an increase of pressure in the battery. The gasket (8), made of a soft synthetic resin, is inserted in a battery housing (2). The stack is set on an upper surface of a stepped portion (8a) of the gasket such that its outer edge is in close contact with the inner periphery of the gasket.

Abstract: A button-type battery has an anode, a cathode, and an electrolyte encased with two terminal housing members. The terminal housing members have respective peripheries that are crimped together to form a fluid-tight seal. An insulating gasket is provided between the peripheries to electrically insulate the two terminal housing members. A porous separator physically separates the anode and cathode and extends between the terminal housing member peripheries at least partially into the fluid-tight seal. According to one aspect, the separator overlaps the gasket in the seal. According to another aspect, the separator and gasket are formed of a single, integral piece of material. One of the terminal housing members is substantially planar.

Abstract: A general purpose organic electrolyte cell usable for long-periods or usable after long periods of storage even in a high temperature environment exceeding 150.degree. C. The positive and the negative electrodes are separated by using a separator made of porous synthetic resin sheet having a melting point of at least 170.degree. C.

Abstract: A miniature galvanic cell employing a cell housing comprising an indented cup, such as a beaded cup, and can wherein the indented area is disposed at the vicinity of the open end of the cup so that effectively the majority of the cross-section thickness of the vertical portion of the cell is attributed to the thickness of the wall of the cup so that maximum internal volume of the cell is reserved for the active components. A process for producing the novel housing is also disclosed.

Abstract: A miniature type of galvanic cell employing a novel ribbed gasket that has a rigid rib segment that will reduce any bowing of the central area of a flat electrode, such as a positive electrode of an air depolarized cell. A process is disclosed for producing a novel ribbed gasket having a rigid rib segment and assembling the novel ribbed gasket in a galvanic cell, such as an air depolarized cell.

Abstract: A method of forming a button-type battery includes: a) positioning first and second terminal housing members in facing juxtaposition to one another, and providing an anode, a cathode and an electrolyte intermediate the first and second terminal housing member central portions; b) providing a peripheral insulative sealing gasket intermediate the first and second terminal housing members, the insulative sealing gasket being in the shape of an annulus and having a radial extent which extends radially outward beyond the surrounding peripheral portions of the first and second terminal housing members; c) moving at least one of the juxtaposed first and second terminal housing members in the direction of the other to push the first terminal housing member container wall against the first gasket face and to simultaneously force the second terminal housing member peripheral portion against the second gasket face, and continuing such moving to bend the insulative gasket about the container wall and force it to be recei

Abstract: The present application discloses battery sealant compositions which exhibit excellent flexibility and chemical (alkalinity) resistance properties without requiring the use of organic solvents. These compositions comprise an epoxy resin, such as polybutadiene epoxy resin; a polyol material, such as a butadiene polyol; a cationic photoinitiator; and optionally a radiation curable monomer, such as a vinyl ether monomer. Electrochemical (battery) cells which incorporate a seal made by the photoinitiated polymerization of this material is is also disclosed.

Abstract: A resealable vent closure for an electrochemical cell comprising a disk seal having a first upstanding wall to define an opening to accommodate a current collector rod of a cell and having vent grooves disposed in the first wall, and having a second upstanding peripheral wall with vent channels and said second wall being crimped between a cover for the cell and the top edge of a container containing the active components of the cell to thereby produce a sealed cell that is resealable.

Abstract: A sealed galvanic dry cell that has a sealing means comprising a terminal cover having a peripheral extending flange that is compressed between a neutral cover and a rim of the open end of a cell's container by use of a compressable gasket that operates such that the rim of the container further interlocks with the flange of the terminal cover upon the buildup of internal pressure to effectively maintain the seal for the cell.

Abstract: The performance characteristics of alkaline manganese dioxide cells are improved by applying a thin, polymeric coating to the inner surface of an unplated steel positive current collector, and treating the current collector with an aqueous solution of sodium silicate before or after the coating is applied to the inner surface. Silicic acid may also be added to the coating before its application to the inner surface of the current collector. In either embodiment of the invention, sodium silicate or silicic acid may also be added to the cathode mixture. The polymeric coating comprises, in combination, a first film forming binder component and a second component comprising an electrically conductive component such as carbon or a filler. The combination of the coating and the sodium silicate or silicic acid treatment of the current collector reduces the internal resistance of the cell, and may even be used on unplated steel.

Abstract: A button-type battery has an anode, a cathode, and an electrolyte encased with two terminal housing members. The terminal housing members have respective peripheries that are crimped together to form a fluid-tight seal. An insulating gasket is provided between the peripheries to electrically insulate the two terminal housing members. A porous separator physically separates the anode and cathode and extends between the terminal housing member peripheries at least partially into the fluid-tight seal. According to one aspect, the separator overlaps the gasket in the seal. According to another aspect, the separator and gasket are formed of a single, integral piece of material. The thickness of the battery is less than one millimeter.

Abstract: A button-type battery has an anode, a cathode, and an electrolyte encased with two terminal housing members. The terminal housing members have respective peripheries that are crimped together to form a fluid-tight seal. An insulating gasket is provided between the peripheries to electrically insulate the two terminal housing members. A porous separator physically separates the anode and cathode and extends between the terminal housing member peripheries at least partially into the fluid-tight seal. According to one aspect, the separator overlaps the gasket in the seal. According to another aspect, the separator and gasket are formed of a single, integral piece of material.

Abstract: A button-type battery has an anode, a cathode, and an electrolyte encased with two terminal housing members. The terminal housing members have respective peripheries that are crimped together to form a fluid-tight seal. An insulating gasket is provided between the peripheries to electrically insulate the two terminal housing members. A porous separator physically separates the anode and cathode and extends between the terminal housing member peripheries at least partially into the fluid-tight seal. According to one aspect, the separator overlaps the gasket in the seal. According to another aspect, the separator and gasket are formed of a single, integral piece of material.

Abstract: A button-type battery has an anode, a cathode, and an electrolyte encased with two terminal housing members. The terminal housing members have respective peripheries that are crimped together to form a fluid-tight seal. An insulating gasket is provided between the peripheries to electrically insulate the two terminal housing members. A porous separator physically separates the anode and cathode and extends between the terminal housing member peripheries at least partially into the fluid-tight seal. According to one aspect, the separator overlaps the gasket in the seal. According to another aspect, the separator and gasket are formed of a single, integral piece of material, where the peripheral edge of the separator/gasket extend beyond the seal.

Abstract: So that an accumulator having a gas-tight and liquid-tight, electrolyte-filled casing in which are arranged electrodes which are separated from each other by a separator and which are each electrically connected to pole contacts accessible from the outside of the casing can be produced in an advantageous manner from the point of view of the manufacturing procedure, wherein the accumulator is to have a durably and reliably sealed casing which is not restricted in terms of its shape, it is provided that in the region of the pole contacts the casing comprises a soft plastic material and a hard plastic material which are fixedly connected together, the soft plastic material forming a seal for the pole contacts and/or the feed-through ducting means of the pole contacts.

Abstract: An electrochemical cell containing a vent assembly for sealing the cell and having a snap-through seal membrane in the form of a concave contour that is designed to snap from a concave contour to a convex contour and rupture upon the build-up of a predetermined pressure within the cell.

Abstract: A metal support disk useful in sealing an electrochemical cell exerts a resilient outward radial force against the seal to assure seal integrity over a wide temperature range and exerts an upward force against an adjacent metal end cap terminal to assure continued mechanical and electrical contact with the terminal. The support is a stepped disk having a centrally located, shallow, cylindrical pill-box, with the bottom of the pill-box extending radially outward into an annular ring. A spring means in the form of an S-shaped rim extends down from the periphery of the ring, terminating at its bottom in an outward extending flange. The edge of the flange presses a plastic seal member against the inside wall of the cell to form the seal.

Abstract: An electrochemical cell has a wheel shaped, molded plastic seal member of a unitary construction which includes a central cylindrical hub from which depend in outward radial sequence, an annular pressure vent, a boss, a downward projecting skirt, an annular flexure means for providing radial movement and an outer rim terminating at its periphery in a cylindrical wall. The pressure vent includes a thin membrane ring depending from the hub which joins the hub to an annular diaphragm. A hinge ring joins the periphery of the diaphragm to the boss. The seal member is designed so that the membrane ring fails primarily in shear at excessive cell pressure which makes the vent more reliable and easier to fabricate.

Abstract: An enclosed-type secondary cell comprises a safety valve (5) made of a metal plate which is deformed with an increase of an internal pressure of the secondary cell, a current interrupting means (6) energized when said safety valve (5) is deformed, an annular gasket (15) for holding an outer peripheral flange portion of the safety valve (5), and a disk (17) serving as a support for detaching a welded portion of a lead plate (17) and a safety valve convex portion (9) when the safety valve (5) is deformed. The annular gasket (15) includes a stepped portion (15e) within a bead-treatment area (21), and the disk (17) is fixed at its outer peripheral portion to the stepped portion (15e) of the annular gasket (15). This enclosed-type secondary cell has the current interrupting means which is energized when the safety valve (4) is deformed with an increase of the internal pressure within the enclosed-type secondary cell.

Abstract: A container for a battery and a method for manufacturing such a container are provided. The container includes a housing; a cover adapted for attachment to the housing by crimping; and a gasket crimped to the cover and housing. One or more grooves are formed in the housing or cover or both. During assembly, the gasket is positioned between the cover and the housing, and a portion of the cover and a portion of the housing are crimped together causing the gasket to flow into and conform to the shape of the grooves. Placement of the gasket within the grooves increases the surface area of the resultant seal thereby improving the seal quality without significantly increasing the thickness of the battery or cell. In addition the grooves prevent the gasket from flowing out of the crimped seam and help to maintain the crimp pressure throughout the lifetime of the battery.

Abstract: A miniature galvanic cell employing a cover-gasket assembly in which the gasket component occupies less than 8% of the internal volume of the cell and a process for producing the galvanic cell.

Abstract: A button-type battery includes, a) an anode; b) a cathode positioned adjacent to the anode; c) an electrolyte between the anode and the cathode; d) a conductive first terminal housing member in electrical contact with one of the anode or the cathode; the first terminal housing member having a periphery; e) a conductive second terminal housing member in electrical contact with the other of the anode or the cathode; the second terminal housing member having a periphery; f) the first and second terminal housing members forming an enclosed housing which holds and protects the anode, the cathode and the electrolyte; and g) the first and second terminal housing member peripheries being configured together to form an electrically insulative seal which seals the anode, the electrolyte and the cathode within the housing formed by the first and second terminal housing members, the electrically insulative seal comprising cross-linked butyl rubber.

Abstract: A stepped insulating ring having a large-diameter upper portion, a small-diameter foot portion, and a step portion formed on the inside is inserted from a top opening of a bottomed cylindrical can containing a plate group and electrolyte and the small-diameter foot portion is set onto the plate group,a peripheral portion of a cover in which a safety valve is incorporated is set onto the step portion of the stepped insulating ring, and the areas to be sealed where an inside wall of top opening of the bottomed cylindrical can faces an outside wall of the large-diameter upper portion of the stepped insulating ring and an inside wall of the large-diameter upper portion faces a peripheral portion of the cover is formed, andwhen crimping operation on said areas to be sealed is performed from the outside of the upper part of the bottomed cylindrical can to form a closed construction,a sealing compound consisting of oily bitumen, organic solvent, and paraffin base oil is applied to the areas where an inside wall of t

Abstract: An electrochemical cell includes a first active electrode material having a tubular shape closed at one end and open at the other, a second active electrode material disposed within the cavity of the tubular shaped first active electrode material, a scrolled separator disposed between the sidewalls of the cavity and the second active electrode material, and an insulator disc disposed between the closed end of the cavity and the second active electrode material. The scrolled separator and insulator disc cooperate to provide a liner which provides a continuous electrical and physical barrier between the cavity walls and the second active electrode material disposed within the cavity. The cell utilizes a simple design which minimizes space occupied by the separator and insulator disc, while maximizing the available area for ion mass transfer between the electrodes, whereby greater cell efficiency and improved performance characteristics are achieved.

Abstract: An electrochemical cell including a current collector assembly having a current collector, a seal and a compression means wherein the compression means and collector exert minimum tension and maximum compressive stresses on the seal thereby avoiding leakage of electrolyte either through or around the seal.

Abstract: A sealed storage battery has a sealing assembly including a hollow rivet mounted to a cover plate via a gasket and a lead piece connecting a positive collector to the hollow rivet. Mounting the hollow rivet to the cover plate is achieved by pressurizing a distal end portion of a hollow shaft of the hollow rivet with a punch having a conical tip end portion so as to caulk the distal end portion of the hollow rivet by enlarging the distal end portion diametrically outward. Tightness between the opposing surfaces of the members among the cover plate, hollow rivet, gasket and lead piece can be enhanced, providing excellent liquid leakage resistance in the battery. A valve body of a safety valve is housed in a positive terminal welded to the head of the hollow rivet.

Abstract: A thin profile battery includes: a) an anode, b) a cathode positioned adjacent to the anode; c) a separator and electrolyte between the anode and the cathode; d) a conductive first terminal housing member in electrical contact with one of the anode or the cathode, the first terminal housing member having a surrounding periphery and a concave central portion intermediate of its surrounding periphery; e) a conductive second terminal housing member in electrical contact with the other of the anode or the cathode, the second terminal housing member having a surrounding periphery and a concave central portion intermediate of its surrounding periphery which is opposingly concave to the concave central portion of the first terminal housing member; and f) the first and second terminal housing members being insulatingly joined and sealed at their respective peripheries to form an enclosed housing which retains and protects the anode, cathode, separator and electrolyte, with the concave central portions of the first an

Abstract: A method of forming a button-type battery terminal housing member includes, a) providing an electrically conductive sheet having an exposed surface, the conductive sheet being larger than a desired resultant battery terminal housing member to be produced therefrom; b) providing a discrete solid gasket body, the gasket body being larger than a desired resultant gasket to be received relative to the battery terminal housing member; c) providing adhesive intermediate the conductive sheet exposed surface and the gasket body, and adhering the gasket body and conductive sheet together with the adhesive; d) positioning the conductive sheet with the gasket body adhered thereto between first and second forming members; and e) moving at least one of the forming members in the direction of the other to bear one of the forming members against the gasket body to simultaneously bend the solid gasket body and conductive sheet into a desired battery terminal housing member shape; the moving step also cutting through the gask

Abstract: A button-type battery includes, a) an anode; b) a cathode positioned adjacent to the anode; c) an electrolyte between the anode and the cathode; d) a conductive first terminal housing member in electrical contact with one of the anode or the cathode; the first terminal housing member having a periphery; e) a conductive second terminal housing member in electrical contact with the other of the anode or the cathode; the second terminal housing member having a periphery; f) the first and second terminal housing members forming an enclosed housing which holds and protects the anode, the cathode and the electrolyte; and g) the first and second terminal housing member peripheries being configured together to form an electrically insulative seal which seals the anode, the electrolyte and the cathode within the housing formed by the first and second terminal housing members, the electrically insulative seal comprising cross-linked butyl rubber.

Abstract: A method of forming a button-type battery includes: a) providing an electrically conductive sheet having an exposed surface which is divisible into a plurality of areas; b) depositing an uncured electrically insulative gasket material onto the conductive sheet into a plurality of the areas, the gasket material being deposited to define at least one discrete pattern within the respective deposited areas, the respective discrete patterns covering less than a total of their respective areas; c) curing the deposited gasket material; d) cutting and forming a plurality of discrete first terminal housing members from the areas of the conductive sheet, the respective first terminal housing members comprising at least a portion of one of the discrete patterns of gasket material; d) providing a discrete electrically conductive second terminal housing member in facing juxtaposition to one of the first terminal housing members; e) providing an anode and a cathode having a separator and electrolyte positioned therebetween

Abstract: There can be provided a button type alkaline battery in which resistance to leakage of the electrolysis solution is improved. A button type alkaline battery includes a positive electrode can (1), a negative electrode cup (3) and a gasket (6). The negative electrode cup (3) has a cuff portion (7). The cuff portion (7) is inclined toward a center of a battery at an angle ranging from 5.degree. to 20.degree..

Abstract: A button-type battery includes: a) an anode; b) a cathode positioned adjacent to the anode; c) a separator and electrolyte between the anode and the cathode; d) a conductive first terminal housing member in electrical contact with one of the anode or the cathode, the first terminal housing member having a surrounding periphery and a concave central portion intermediate of its surrounding periphery; e) a conductive second terminal housing member in electrical contact with the other of the anode or the cathode, the second terminal housing member having a surrounding periphery and a concave central portion intermediate of its surrounding periphery which is opposingly concave to the concave central portion of the first terminal housing member; and f) the first and second terminal housing members being insulatingly joined and sealed at their respective peripheries to form an enclosed housing which retains and protects the anode, cathode, separator and electrolyte, with the concave central portions of the first and

Abstract: A cover arrangement is intended for the pressure-tight closure of a capacitor can for electrolytic capacitors. The cover arrangement contains a cover part having at least one aperture, at least one connecting element inserted into the aperture in the cover part, and a valve element inserted into a further aperture in the cover part in a gas-tight manner. In order to produce a temperature-resistant and chemically-resistant cover arrangement which is of simple construction and can thus be produced cost-effectively, the cover part has a hard-paper core coated externally with respect to the can with an elastomerically flexible sealing layer and internally with respect to the can with a chemically resistant material layer. An elastomeric molding is arranged on the inside of the cover part which has at least one aperture aligned with each aperture in the cover part.

Abstract: A flat-type cell comprising cup shaped positive and negative electrode cases, each having a cylindrical part with the negative electrode case being placed inside the positive electrode case with their cylindrical parts facing each other with a gasket in between, wherein the cylindrical part of the negative electrode case has its open edge folded outwardly to form U shaped section and its cylindrical part expanded outwardly, so that the inner volume of the negative electrode case is enlarged and the electrical capacity is improved with decreased self-discharge and electrolyte leakage.

Abstract: This invention pertains to alkaline electrochemical cells, typically to metal-air cells of the button-type. Non-reactive elements of cells of the invention are thinner than corresponding non-reactive elements of prior art cells. Such elements can be made thinner because of improved structures of such elements. The anode can is made from a metal strip structure having a higher steel content. The cathode can has a modified temper, which improves relative stiffness and rigidity while retaining sufficient ductility. The seal disposed between the anode can and the cathode can is made thinner. Structure of the corner of the cathode can between the bottom and the side wall is improved. By so reducing the thicknesses of non-non-reactive elements of the cell, and thus the volume occupied by such non-reactive elements, the fraction of the cell devoted to holding electrochemically reactive anode material therein is increased, with corresponding increase in the milliampere hour capacity of the cell.

Abstract: A button-type battery has an anode, a cathode, and an electrolyte encased with two terminal housing members. The terminal housing members have respective peripheries that are crimped together to form a fluid-tight seal. An insulating gasket is provided between the peripheries to electrically insulate the two terminal housing members. A porous separator physically separates the anode and cathode and extends between the terminal housing member peripheries at least partially into the fluid-tight seal. According to one aspect, the separator overlaps the gasket in the seal. According to another aspect, the separator and gasket are formed of a single, integral piece of material.

Abstract: A metal support disk for an electrochemical cell seal exerts a resilient outward radial force against the seal to maintain seal integrity over a wide range of operating temperature and, at the same time, exerts an upward force against the bottom of the metal end cap terminal of the cell to assure electrical contact between the anode inside the cell and the terminal. The disk includes a central, circular platform connected to an outer, sealing edge sealing flange by an annular flexure means which permits radially inward and outward movement of the sealing edge when the end of the cell is radially crimped during the sealing process. The crimping also moves the central portion of the disk up which results in the upward force being exerted against the end terminal. The flexure means is a sequential series of three annular, curved fibs with the first and third curved downward and the second curved upward.

Abstract: A design and process for making hermetically sealed thermocompression feedthrough and peripheral seal for high temperature Li Alloy FeS.sub.x battery cells and battery enclosures. The selected materials and processes parameters are developed to match the high temperature Li Alloy/FeS.sub.x system.

Abstract: An electric vehicle cell featuring internal pressure relief and spring disengagement devices which vent various internal pressures to atmosphere to prevent cell bulging or explosion and which also internally interrupt current flow through the cell due to internal overheat, excessive current draw and the like. Internal reconnection of cell members reoccurs subsequent to internal thermal and other abnormalities.

Abstract: The sealing of the top and/or bottom of the cylindrical positive electrode of an air-cell is improved and leakage of the electrolyte from the jellied zinc negative electrode disposed within the positive electrode which is constituted of a collector layer, catalyst layer, and a porous layer is prevented. By utilizing a positive electrode constituted of a metallic collector layer made of a metal mesh or such, a catalyst layer disposed around said collector, and a fluororesin porous layer as an air diffusion layer, an outer cup and an inner cup are pressed on the top of the positive electrode in order to prevent the leakage of the electrolyte.

Abstract: An electrochemical storage cell is bounded by a metallic casing and has a cup-shaped solid electrolyte on the inside which separates an anode compartment from a cathode compartment. The storage cell is externally closed in a leak-proof and gas-tight manner. A closure of the cell has an additional seal with two mutually overlapping components between which an insulating ring is disposed.