Abstract: A secondary battery utilizing a molten sodium negative reactant, a sulfur-aluminum halide positive reactant melt having a carbon powder dispersed within the melt, a molten sodium haloaluminate electrolyte, and a selectively ionically-conductive separator positioned between the negative and positive reactants.
Abstract: A seawater battery comprises a plurality of bipolar electrodes. Each bipolar electrode includes an anode and a cathode attached to the alternate sides of a barrier. The barrier is a sheet of thin flexible plastic material. The edges of the barrier extend beyond the edges of the anode and cathode. Opposing edges of the barrier are folded against the opposing edges of the anode so as to form flanges. A suitable number of the bipolar electrodes, along with suitable endwalls and end electrodes, are assembled so that the flanges of any particular bipolar electrode overlap the flanges of an adjacent barrier. An adhesive tape is wrapped around the assembly sealing the several edges of the barriers, including the flanges, and holding the bipolar electrodes in place. Alternately, a hot melt may be used to seal some or all of the battery edges. Because the barriers are very thin, the battery is compact and economical of space. Further, it is economical to construct.
Abstract: A plurality of deformations is provided in a metal layer in a battery to avoid wrinkles in that metal layer. The deformations may be situated in that portion of the metal layer which is part of a peripheral sealing system for the battery and/or in that portion of the metal layer inside the peripheral sealing system. The deformations may be oriented along axes which are (a) substantially concentric with the edges of the peripheral sealing system, (b) substantially perpendicular to the edges of the sealing system, or (c) neither (a) nor (b). The metal layer may have a pocket indented therein, the indented pocket being situated inside the peripheral sealing system and over the electrodes of the battery.
Abstract: High temperature secondary cells having a molten salt or fused salt electrolyte are fabricated in ambient atmosphere. Such cells typically have an electrolyte, a positive reactant or a negative reactant which are capable of reacting with moisture or oxygen contained in the atmosphere. The ingredients or materials comprising the positive and negative reactants and the electrolyte are processed in a state in which they do not react significantly with moisture or oxygen in the ambient atmosphere. Thereafter, they are electrically charged in the positive reactant compartment of a cell container at the operating temperature of the cell whereby the negative reactant of the cell is provided in the negative reactant compartment of the cell container and a positive reactant-electrolyte melt is provided in the positive reactant compartment of the cell container.
Type:
Grant
Filed:
June 9, 1975
Date of Patent:
June 1, 1976
Assignee:
ESB Incorporated
Inventors:
John Werth, Dell A. Crouch, Jack C. Sklarchuk
Abstract: An alkaline primary battery has at least two cells. The cells are of the type where the anode material (zinc) is in the form of a powder suspended in a gel and is located in the central portion of the cell. The anode current collector for the second cell is made as an integral portion of the first cell and takes the form of a metal rod dependent from the base of the first cell. The cells are built without anode current collectors. In the assembly of a battery from such cells, the anode current collector attached to a first cell is forced through the cover of a second cell and embeds itself in the anode structure of the second cell. The anode collector for the first cell is in the form of a loose metal rod and is similarly forced through the cover and into the anode structure of the cell. The end cell opposite to the first cell is similar to the other cells except that it does not have a current collector attached to its base.
Abstract: A Multicell seawater battery is provided with a top venting means. The venting means comprises a series of passages each located above and communicating with a particular cell. The several passages are connected by ports alternately at one end and at the other end of the cells to form a zig-zag conduit at the top of the battery. A similar passage may be located at the bottom of the battery. The improved porting reduces electrical losses to ground and also reduces the background noise of the battery.
Abstract: The method, which provides liquid-impervious seals around opposed positive and negative battery electrodes in a collation of battery layers, concerns the need to apply energy around the opposed electrodes by some means other than and for a longer time period than the conventional pair of pressure rolls which have previously been used to seal moving battery layers. With this invention the seals are made by platens which either travel along with the moving collation during the sealing step or which are brought into contact with an increment of the collation which is temporarily stopped.
Abstract: Wet formed negative storage battery plates are dried without oxidation by a drying cycle including a first portion where dry steam is circulated about the plates, and a second portion where the plates are further dried and cooled in carbon dioxide containing atmosphere until they will not oxidize when exposed to air. An apparatus for carrying out this drying cycle is also described.
Abstract: A primary seawater battery employs a metallic sheet anode and a sheet cathode. The cathode is lead chloride including an addition of about 1 to about 10 parts by weight of lead oxide per 100 parts by weight of lead chloride. The lead oxide may be litharge, litharge containing lead, red lead or lead peroxide. Other ingredients which may be present in the cathode are carbon black for conductivity and an organic binder such as polyfluoroethylene. The battery is characterized by having a shortened rise time compared to batteries without the lead oxide additive, especially when the battery is used at low temperatures.
Type:
Grant
Filed:
February 25, 1975
Date of Patent:
March 9, 1976
Assignee:
ESB Incorporated
Inventors:
Harold Nickolas Honer, Francis P. Malaspina, William J. Martini
Abstract: Perfluoro compound-epoxy resin compositions manifesting oil and soil resistance said compositions comprising an epoxy resin and a block copolymer of the type [ABA].sub.n wherein A is a perfluoro group having from 8 to 10 carbon atoms, B is a low molecular weight functionality reactive with the epoxy resin and n is from 1 to about 5.
Abstract: A method and apparatus is disclosed for transferring an electrical load to an inverter from a utility A.C. power source without causing transient changes in the voltage and current fed to the load when such transfer is effected.