Electric battery cell making

This invention relates to a method of making a storage battery plate grid comprising the steps of casting a series of grids between the continuous cylindrical patterned end surface of a rotating drum and a smooth surfaced co-operating shoe, cropping said series of grids, said rotating drum being patterned...     

A welding method for joining lead parts together in a lead-based battery is disclosed using an inert gas-shielded, non-consumable electrode and an ingot-like mold surrounding the lead parts to be fused. The electrode arc is struck substantially directly over the lead parts and the electrode arc is passed...     

In a galvanic cell with negative zinc electrode and positive electrode of AgO, the AgO is surface-reduced to Ag.sub.2 O, and insulated from the current takeoff, to which connection is made only by a porous silver layer.

A storage battery sealed gas-tightly and liquid-tightly in which an electrode set with a pole lead is inserted in a battery casing fully open at one end and closed at the other end except for a central opening through which the pole lead extends. Insulation prevents electrical contact between pole lead...     

An apparatus and method for assembling a sheet of storage battery separator material about a lead battery plate is disclosed. A battery plate is fed against the center of a flat sheet of battery separator material. The sheet is retained by guides above and below the line against which the battery plate...     

Liquid-semiconductor photocells have received attention recently for use in solar power devices. Alternatives to single crystal semiconductors have been sought to reduce the cost of the photocells. According to this invention, the semiconductor is made from a pressure sintered and vapor annealed semiconductor....     

A solid-state primary cell comprising a lithium anode, an iodine cathode containing a charge transfer complex and a solid lithium iodide electrolyte doped with a 1-normal-alkyl-pyridinium iodide. The anode surface can be coated with LiOH or Li.sub.3 N. The iodine cathode comprises a complex of iodine...     

A lithium-iodine cell comprising a casing of electrically conducting material, an anode including a lithium element within the casing, an electrical conductor operatively connected to the lithium element and extending out from the casing, and a cathode comprising iodine-containing material in operative...     

A battery cell soldering apparatus for coupling a plurality of battery cells within a battery casing comprising a support platform and a battery casing holder wherein the support platform operatively supports a soldering block including a plurality soldering elements coupled to an electrical source together...     

The method of making a laminar battery including the steps of contacting the cellophane side of a laminate of cellophane and zinc powder adhered to the cellophane with a polymeric binder with a cathode slurry of carbon and manganese dioxide in an aqueous solution of electrolytes, coating the zinc side...     

Disclosed are methods for rejuvenation of oxygen electrodes which maximize the power efficiency available from such oxygen electrodes while minimizing the voltage necessary to operate such oxygen electrodes over extended periods of time. These methods include in situ and out of cell techniques using...     

A lithium-iodine cell comprising a casing of electrically conducting material, an anode including a lithium element within the casing, an electrical conductor operatively connected to the lithium element and extending out from the casing, and a cathode comprising iodine-containing material in operative...     

An assembly machine, preferably, for winding an electrolytic cell roll, for transporting a roll after winding from the winding station to a roll canning station and for inserting the cell roll into a can at the canning station. The transport is a conveyor with a plurality of nests thereon in which the...     

An Ag layer is formed upon an Ag.sub.2 O electrode by introducing a chemical reducing agent in such a manner that the transformation takes place after the electrode is already in place in the cell cup.

An apparatus for applying and affixing sleeves of dielectric plastic material to galvanic cells. The apparatus includes a carrousel having a cell receiving station, a sleeving station and a discharge station with a tester for testing and rejecting cells between the receiving and sleeving stations. The...     

A mandrel useful in the spiral winding of flexible strip members is described including a pair of juxtaposed curvilinear perimetric driving portions which are offset laterally relative to one another and which have a slot or slots for receiving the elements to be wound. A process and winder are also...     

An improvement in the production of tube electrodes for lead storage batteries comprising mixing a small amount (0.1 to 3 weight percent) of polytetrafluoroethylene (PTFE) with lead powder, the mixture is heated and shear stresses are applied thereto sufficient to convert substantially all of the PTFE...     

A "ball and socket" seal arrangement for an electrochemical cell is disclosed wherein a ball of insulating material is captively retained in a socket formed by a portion of the cell cover in cooperation with a retaining member. The cell feedthrough passes through the socket and the insulating ball. After...     

A nonaqueous electrochemical cell and a method for the construction thereof wherein the cell contains a metal salt additive such as lithium nitrate (LiNO.sub.3) or calcium nitrate Ca(NO.sub.3).sub.2 which reduces the reactivity of substantially the entire active cathode surface. Electrolyte solvents...     

Photoelectrochemical cell structures and methods of fabrication are disclosed which provide for easily manufactured efficient energy conversion devices. The structures incorporate one or more chambers for the electrolyte, and utilize semiconductor photoelectrodes. In the plural chamber structure, the...     

A homogeneous mass of particulate manganese dioxide which has been heat-treated to reduce its moisture content and treated with an organic solvent which substantially fills the pores of the manganese dioxide thereby reducing its affinity for absorbing moisture when exposed to a moisture environment for...     

An electrochemical cell containing a decomposing electrolyte solvent, further contains small amounts of an additive material such as lithium sulfide which causes partial self discharge of the cathode of the cell with non-reactive products. The self discharge partially deactivates substantially all of...     

A cell for generating electric energy is provided comprising a sealed container partitioned into anode and cathode chambers, said partition comprising an electrolyte/separator in the form of a bundle of hollow glass or ceramic fibers, fusion sealed together between their interstices adjacent at least...     

An anode coating for anhydrous electrochemical generating cells is disclosed wherein the anode active material is immersed in an electrolyte solution and coated with the insoluble reaction product of the anode metal with an inhibiting reactant such as CO.sub.2, SO.sub.2, O.sub.2, NH.sub.3, and N.sub.2...     

An electrochemical cell having a lithium anode, a thionyl chloride depolarizer and a sulphur dioxide passivation control agent which further includes having the pressure relieved to substantially reduce the internal pressure of the cell. The internal cell pressure is relieved by venting for sufficient...     

A laminated metal-polymer support for the active material of an electric storage battery and method of making same. Anchoring tabs punched from a thin metal sheet project into openings between the grid wires of a polymer grid work and are pressed into engagement with the adjacent grid wires to secure...     

An improved apparatus and method are disclosed for winding into a spiral roll the positive (186) and negative (241) plates of small cylindrical batteries. The originally flat positive and negative pasted plates are conveyed through stations at which they are automatically wrapped with strips of separator...     

A porous sintered plaque is provided with a bimodal porosity that is especially well suited for use as an electrode within a molten carbonate fuel cell. The coarse porosity is sufficient for admitting gases into contact with the reaction surfaces while the fine porosity is wetted with and retains molten...     

The invention comprises an improved cadmium negative electrode which is less prone to fading, can easily be manufactured by a pasting technique, and which does not require any external cycling to develop a precharge. This is accomplished by the use of irregular knarled cylindroidal cadmium particles...     

The invention relates to improvements in machines employed for enclosing battery plates within a pouch of sheet material. The sheet is positioned so that the center of its length is disposed between the side of a fixture adapted to receive adjacent thereto the bottom edge of a battery plate and a slot...     

Electrochemical cells and batteries incorporating iodine-containing cathode materials and cathode current collectors having an interposed viscous fluid layer containing dissolved iodine.

A non-aqueous cell having a lithium anode is made abuse resistant by sandwiching and enclosing a thin substantially perforation-free copper foil or sheet between layers of lithium whereby the copper is isolated from the cell electrolyte.

An improved housing assembly for aircraft batteries is disclosed in which an insulated bezel is fastened to a cast aluminum housing using the battery electrical terminals. The bezel serves both to isolate the terminals from the housing and to provide a locating frame for a terminal enclosure. Recessed...     

A battery cable has a termination at one end for electric connection to the threaded terminal of a storage battery, which termination also includes an upstanding threaded stud for connection to another battery cable or to other auxiliary equipment.

The safety of a non-pressurized electrochemical cell such as a Li/MnO.sub.2 cell, having a safety pressure vent and an organic electrolyte solvent is enhanced by, in conjunction with said vent, providing said organic electrolyte solvent with at least 80% by volume of a volatile component, such as dimethoxyethane,...     

An apparatus for welding through-the-partition intercell connections in a lead-acid battery container wherein each partition has at least two spaced apertures therein for making such intercell connections includes in the exemplary embodiment three weld stations and a crimping station through which the...     

In accordance with the invention, a novel electrochemical cell and a method for making same is provided which is particularly suitable for use in a battery of the type employing one or more cells. One feature of the cell includes a sealed non-metallic pouch of thin flexible material which forms a cell...     

A method and apparatus for providing a compound (22) in each of the cell spaces of a multicell battery case (10). The compound comprises a bituminous material delivered to a plurality of the cell spaces concurrently through a plurality of nozzles (25) of a dispensing head (24). The battery case (10)...     

A method of manufacturing recombination electric storage cells includes assembling a plurality of cell packs comprising alternating positive and negative electrodes interleaved with compressible fibrous absorbent separator material. Each cell pack is placed in a respective open plastics bag and the cell...     

A grid array for use in assembling a multicell electric battery comprises a plurality of grids preferably arranged in two spaced parallel lines, adapted to provide a plate for every cell of the battery. Each grid is connected to one or more adjacent grids by a combination of integral bridge pieces and...     

The invention provides a method of making a cathode for an electrochemical cell which involves incorporating sodium chloride in dispersed form into an electrolyte permeable matrix and impregnating the matrix with a suitable sodium aluminum halide molten salt electrolyte. The matrix is formed from a transition...     

A method of manufacturing a recombination electric storage cell includes pasting positive and negative electrodes with damp active electrode material and forming a cell pack of alternating positive and negative electrodes interleaved with separator material. The cell pack is inserted into a plastics...     

A process for producing iodide-treated manganese dioxide which displays reduced abnormal initial open circuit voltage and decreased undesirable degradative reactions with cell components when employed in electrochemical cells.

Corrosion is reduced in aqueous electrochemical cells having zinc anodes by utilizing mercury amalgamated discrete single crystal zinc particles to which small amounts of one or more of indium, thallium, gallium, bismuth, cadmium, tin and lead have been added or prealloyed with the zinc, prior to formation...     

A multi-cell battery container and method of making same wherein a tubular extrusion having opposing ridged and grooved walls is cut to length and divided into a plurality of compartments by partitions subsequently sealingly mated with the grooves.

A composite cathode for a solid state electrochemical cell is made by forming a sheet or film from a solution of an insertion electrode material (e.g. V.sub.6 O.sub.13) and a polymeric material (e.g. (PEO).sub.x LiF.sub.3 CSO.sub.3), e.g. by solution casting. The sheet or film is subjected to densification...     

A button cell having an air cathode assembly wherein grooves are constructed between the cathode and cell container to provide a gas diffusion passage from a port extending through the container to the face of the air cathode.

A power pack assembly (10) for operating equipment such as video equipment (12) including a plurality of power cells (14). The power cells (14) are connected in series to operate video equipment (12). A housing supports the power cells (14) and includes nonconductive partitioning walls (36) within the...     

Disclosed is a method of coating an electrode on a solid oxygen conductive oxide layer. A coating of particles of an electronic conductor is formed on one surface of the oxide layer and a source of oxygen is applied to the opposite surface of the oxide layer. A metal halide vapor is applied over the...     

A battery grid pasting machine has an endless steel conveyor belt for advancing grids beneath a paste hopper. The lower end of the hopper is closed by an orifice plate. The top run of the belt is supported by a vertically adjustable roller directly beneath an orifice slot in the orifice plate. A guide...     

A porous graphite electrode for a fuel cell is formed by impregnation of a cellulosic filter paper by coating or impregnating with a low coke yield impregnant on the active center area and with a high coke yield impregnant on the edges, followed by curing, baking, and graphitizing the electrode to form...     

The invention is a conductive composite crystal of a permanganate and a conductive material such as graphite or other carbonaceous material for use as a cathodic material in a galvanic cell. The invention also includes methods for producing the conductive composite crystal comprising impregnating a carbonaceous...     

Disclosed is a method of producing a sealed metal oxide-hydrogen storage cell, comprising the step of housing in a container a cathode containing a metal oxide as an active material, an anode containing a hydrogen storage alloy as the main component, a separator for separating the cathode and the anode,...     

Electrochemical cells jacketed with a decorative heat shrink jacket are pre-heated to a temperature sufficient to soften the heat shrink jacket when placed thereon but below a temperature which will rapidly heat shrink the jacket. The heat shrink jacket is thereafter conformed to the cell by heat shrinking...     

An elemental lithium-lithium alloy composite anode capable of high current ensity discharge for battery applications.

A liquid-impermeable plate (10) having through-plate conductivity with essentially zero resistance comprises an insulator sheet (12) having a series of spaced perforations (14) each of which contains a metal element (16) sealingly received into the perforation (14). A low-cost plate can readily be manufactured...     

Method for the reactive dehydration of manganese dioxide. Dehydration is achieved by contact with a fluid desiccant (dehydrating agent) which reacts with water bound to manganese dioxide. Preferably, a gaseous product or a low boiling point liquid which easily produces vapors is formed. The manganese...     

Reduction of electrode metal dissolution in electrolyte between two metal electrodes of a voltaic cell by adding an electrode metal dissolution reduction agent to the electrolyte prior to operation of the cell, the electrode metal dissolution reduction agent being a sacrificial electrode metal, a metal...     

This invention provides a method of making a cathode for a high temperature rechargeable electrochemical cell. A mixture is formed in particulate form of an alkali metal chloride such as sodium chloride and a substance comprising a transition metal such as iron, and the mixture is impregnated with a...     

Novel composite conductors are provided comprising interpenetrating networks of a continuous electronic conducting material and a continuous ionic conducing material. Also provided is a method of producing films of the same.

Method and apparatus for joining lead battery parts (e.g., plate lugs, intercell connectors, terminals, etc.) together via a low resistance electrical coupling wherein substantially oxide-free, arc-melted, superheated molten lead is cast into a cavity between the parts. The parts are shielded from the...     

The present invention comprehends a method of filling a mat-immobilized-electrolyte type, Pb-acid storage battery with electrolyte wherein a predetermined quantity of sulfuric acid sufficient to wet substantially the entire internal surface area of the mats and electrodes is metered into an empty cell...     

The invention covers a method of producing packaged batteries having high internal resistance utilizing semiconductor manufacturing techniques. These include forming an assembly for each battery to be formed of an anode plate and a cathode plate in spaced parallel relationship with a low concentration...     

A galvanic cell stack including a plurality of alternately interleaved positive and negative polarity plates each including a conductive lug projecting therefrom for electrically coupling to other plates of like polarity in the cell stack. Each set of like polarity plate lugs includes a polymer strip...     

The invention provides a method of manufacturing an electrochemical cell housing wherein a beta-alumina tube has an open end attached to a casing via an alpha-alumina ring. In the method the alpha-alumina ring is thermocompression bonded to a metal ring by hot isostatic pressing, the alpha-alumina ring...     

A powdered positive mixture, a powdered separator mixture, and a powdered negative mixture are filled sequentially into a mold in layers, then the layers of the positive mixture, the separator mixture and the negative mixture are compacted in the mold to form a laminated tablet. The laminated tablet...     

The invention provides a method of making an electrochemical cell. The method comprises loading, into the cathode compartment of the cell an alkali metal aluminium halide molten salt electrolyte having the formula MAlHal.sub.4 wherein M is the alkali metal of the separator and Hal is a halide; an alkali...     

A thionyl chloride electro-chemical cell includes a porous metal member electrically connected to the cathode and interposed between the cathode and the lithium anode.

Corrosion is reduced in aqueous electrochemical cells having zinc anodes comprised of single crystal zinc particles by the addition of small amounts of a gas inhibiting surfactant, for example, an organic phosphate inhibitor such as RA600 from GAF Corp. to the cell. A synergistically lowered rate of...     

Sensitive material, e.g. lithium electrode material, is provided with a protective layer of fluid-impermeable material, which is subsequantly rendered permeable by altering its physical structure, e.g. by perforation, without altering its composition. The permeable material can act, for example, as an...     

This invention relates to handling apparatus and methods and in particular, but not exclusively, to the handling of groups of battery plates. Thus handling apparatus 10 includes a main upright 11 supporting a transport mechanism 12 from which depends a plurality of spaced gripping devices 13. These devices...     

Method and apparatus for straightening of cast anodes on their way to a stage for electrolytic refining of metals. The straightening of the anodes and the elimination of the casting fins is carried out by pressing the anode at several spots or spot areas simultaneously. The apparatus includes a pressing...     

Method and apparatus for straightening of cast anodes on their way to a stage for electrolytic refining of metals. The straightening of the anodes and the elimination of casting fins is carried out by pressing the anode at several spots or spot areas simultaneously.

A hydrogen storage electrode comprising a body of an alloy of the general formula, AB.sub.a, or a hydride thereof, in which A represents at least one element selected from the group consisting of Zr, Ti, Hf, Ta, Y, Ca, Mg, La, Ce, Pr, Mm, Nb, Nd, Mo, Al and Si, B represents at least one element selected...     

Protruding exposed edges of the foil carrier of an electrode in a jelly roll cell are specially indented inwardly at intervals to facilitate placement of an insulator ring at the top of the cell after insertion of the electrode in the container. Effective insulation of the exposed carrier edges from...     

A solid cathode liquid organic electrolyte lithium cell for delivering high current pulses comprising a casing, a cathode structure in the casing comprising a plurality of plates in spaced apart relation, a lithium anode comprising a plurality of anode sections interposed between the cathode plates,...     

An improvement in lead-acid batteries is disclosed. The improvement is directed toward construction of a lead-acid rechargeable battery in which bipolar positive and negatives plates (biplates) share the same grid or substrate. According to the present invention, such biplates are stacked upon each other,...     

A battery cell including a cylindrical container having a cap assembly positioned in the open end thereof. The cap assembly includes a terminal extending into the container, a rigid plate, a thermal disconnect assembly and a contact cap. A seal fits about the cap assembly to electrically isolate the...     

The invention provides a cathode for an electrochemical cell, a cell incorporating the cathode, and a method of rendering the cathode resistant to a drop in capacity associated with cell cycling. The invention involves dispersing a transition metal, other than Ni, Fe, Cr, Co or Mn, in the active cathode...     

An electrolyte matrix is integrated with at least one electrode catalyst layer, namely, catalyst layers which can be independent from an electrode substrate. Therefore, the permeation of catalyst to the substrate can be prevented, the amount of catalyst used can be reduced, and an electrode of uniform...     

An electrochemical cell has a molten alkali metal anode separated by a separator which is a conductor of anode ions from an alkali metal aluminium halide molten electrolyte which couples the anode to a cathode having an active material comprising Fe, Ni, Co, Cr and/or Mn. The molten electrolyte is doped...     

A procedure is described for making niobium triselenide for use in nonaqueous cells. The procedure involves synthesis of NbSe.sub.3 from Nb.sub.2 Se.sub.9 which is rapid, easily adapted to manufacturing conditions and yield product with excellent characteristics for lithium cell applications.

A method of making an electrochemical cell comprises loading into a cathode compartment of a cell housing comprising an anode compartment separated from a cathode compartment by a separator which is a solid conductor of ions of alkali metal M or is a micromolecular sieve which contains alkali metal M...     

A secondary electrochemical cell is made by (i) assembling a solid state electrochemical cell having an anode containing an alkali metal such as lithium as active anode material; a solid alkali metal ion conducting electrolyte, for example a polymer electrolyte comprising a complex of a solid polymer...     

An apparatus and method for fabricating a consolidated assembly of cathode material in a dry cell battery casing having a closed end and an open end are disclosed. The casings are moved in a path to a selected transfer region on a circular locus, into registry with a die assembly, and along an arc of...     

An apparatus and method for fabricating a consolidated assembly of cathode material in a dry cell battery casing having a closed end and an open end are disclosed. The casings are moved in a path to a selected transfer region on a circular locus, into registry with a die assembly, and along an arc of...     

Method and apparatus for joining lead battery parts (e.g., plate lugs, intercell connectors, terminals, etc.) together via a low resistance electrical coupling wherein substantially oxide-free, arc-melted, superheated molten lead is cast into a cavity between the parts. The parts are shielded from the...     

A battery is prepared by dipping battery elements (which may be surrounded by a thin, lightweight material, such as a plastic bag) into a liquid encapsulating, acid-resistant liquid material such as a rubber or resin. Individual elements can be connected either before or after hardening of the liquid...     

Metals useful in the formation of hydrides for applications such as batteries are advantageously activated by a low temperature low pressure process. This process which is useful at room temperature and atmospheric pressure involves treating the metal such as LaNi.sub.5 with boron reducing agents such...     

A non-pollution zinc-alkaline battery excellent in storage stability can be obtained by using, in formulation for negative electrode, a zinc alloy which contains at least one element selected from the group consisting of bismuth, lithium, calcium and aluminum which is free from mercury, lead, cadmium,...     

The present invention relates to a process to manufacture alkaline cells by applying electrically conductive paint on an inner wall area of cathode container which contacts with cathode molds, and by heating said cathode container itself by applying electromagnetic induction in order to dry and/or cure...     

Internal intercell and terminal cell electrical connector elements in an electrochemical battery are protected from corrosion and build-up of high internal resistance by coating the electrical connector elements with a layer of a protective preferably non-conductive viscous material such as silicone,...     

This invention is directed to novel allyl carbonates and to solid electrolytes containing a solid matrix having incorporated therein allyl carbonates. The solid matrix is used in an electrolytic cell.

An electrochemical cell and method for producing the same having superior recharge and discharge characteristics through the use of thin non-perforated lead films.

A nonaqueous electrolyte secondary cell provided with (a) a negative electrode consisting essentially of a carrier for a negative electrode active material , said carrier being capable of being doped and dedoped with lithium, (b) a positive electrode comprising, as an essential positive electrode active...     

Filling a mat-immobilized-electrolyte battery with electrolyte. The battery's container includes a cover having two openings therein. The battery is laid on its side and electrolyte introduced thereinto through the lowermost opening. The electrolyte enters the battery at substantially the wicking rate...     

In a new process for making a cathode current collector assembly, a cathode composition is positioned on a substrate between the substrate and a releasable layer. Next, force is applied on the releasable layer and directed toward the substrate so as to provide a smooth cathode surface in contact with...     

A battery cell includes at a plurality of composite separator/electrode structures, each composite structure including a support member having a plurality of parallel, closely spaced ribs defining a plurality of grooves which extend longitudinally of the support member, alternating ones of the grooves...     

An electrochemical device for production of electrical energy including a case, a primary Faradaic component in the case comprising an active metal anode and a cathode material, an electrochemical capacitor component in the case comprising first and second layers of conductive carbon separated by an...     

This invention relates to apparatus 10 and methods for loading groups of battery plates or the like in adjacent cells 1 to 6 in a holder. The apparatus includes guide means 13 which defines, by means of walls 37, 38, spaces 40 for receiving respective battery groups 30. The walls can be collapsed around...