Abstract: An electrode mixture paste (5) is applied on both sides of a strip of core material (1) made of porous metal sheet that is running along its lengthwise direction. The paste-coated core material (1) is pressed with press rollers (15a, 15b) alternately from opposite sides once or more, after which the paste-coated core material (1) is passed through the gap between a pair of scraper tools (16a, 16b) to adjust the coating thickness of the paste (5), while the position of the core material (1) is restricted with comb-shaped projections (17a or 17a, 17b), so that, even though the projections (17a, 17b) are distanced from each other sufficiently to allow weld points of the core material (1) to pass through, the coating thickness is precisely regulated.

Abstract: A grid plate for high power lead acid battery having a plate (14) covered with a conductive polymeric matrix (10) of preferably polyaniline and its derivatives, which is then coated with nanoscale particles of active material (14) such as lead sulfate and basic lead sulfate complexes.

Abstract: In a system for applying material to a substrate, a first material is applied to the substrate and the substrate coated with the first material is drawn between a pair of rollers to form a material layer. The roller which contacts the first material is grounded and an electrostatic charging device sprays electrostatically charged particles of a second material onto the roller such that the particles are evenly dispersed on the surface of the roller. The particles of the second material on the roller tend to prevent the first material from adhering to the roller and are preferably incorporated into the second material.

Abstract: A method of making metal hydroxide plate blanks for use in an electrochemical cell which includes compressing a porous metal web in at least one compression zone to a substantially non-porous state, attaching at least one a non-porous strip of the same metal to the porous metal web in the area of the compression zone, impregnating the porous metal web with a coating of electrochemically active material to form an impregnated web, removing excess coating from the impregnated web, drying the impregnated web, and dividing the dried web into plate blanks in the area of the metal strip. The metal is selected from the group consisting of nickel, silver and copper, with the preferred metal being nickel.

Abstract: Methods for fabricating cored structures are provided. The cored structures may particularly find usefulness as cored battery plates for use in lead/acid batteries. A pre-formed core element is provided, and on its surfaces there is placed a thin layer of an active surface material. That active surface material is one which may enter into a chemical or electrochemical process when in use and in the presence of an electrolyte or other agent which will promote such chemical or electrochemical process. In the case of lead/acid batteries, the active surface is lead or lead oxide. The core element is generally one which does not bond with the active surface material, but will if the active surface material is ion bombarded or neutral atom embedded into the surface of the core, and where the amount of bombardment or embedment is determined by controlling the accelerator voltage.

Abstract: A method and apparatus for filling fibrous-structure electrode plaques for rechargeable batteries with an active compound paste, with simultaneous sizing of the plaque. The fibrous-structure electrode plaque is fed by means of a conveyor device to a roll mill whose roll nip is uniformly filled with a flowable active compound paste over the nip width. As the plaque passes through the roll nip, it is filled with active compound paste from both sides, simultaneously sized for thickness, its surface is smoothed and excess paste is removed from the main surface.

Abstract: Method and apparatus for pasting a porous structure, such as a battery support plate, which provides for inserting pasty material from a vibrating hopper continuously and evenly as a sandwich filling of controlled thickness between two conveyer strips driven at the same speed to deliver pasty material with a predefined thickness and with a flat translational motion onto a substantially horizontal platen; removing the conveyor strip opposite that in contact with the platen to uncover the upper face of the pasty material; bringing the porous structure level with the platen onto the upper surface of the pasty material; pressing the pasty material into the porous structure; and removing the pasted porous structure from the lower strip. The porous structure can be simultaneously pasted on its upper side using a secondary conveyer strip.

Abstract: A method and apparatus for vibration-filling electrodes in a paste bath. A holding tool connected to a vertical rotary shaft carries the electrode and, arranged above it, a vibration reflection body. The electrode and vibration reflection body are immersed in the paste bath, filling of the electrode is carried out, and the holding tool, electrode and reflection body are withdrawn from the paste path. Above the paste bath, the excess paste is spun off the electrode by rotating the vertical rotary shaft, the reflection body also being cleaned of the paste.

Abstract: A method with and associated apparatus for vibration-filling electrodes in a paste bath. A holding tool connected to a vertical rotary shaft carries the electrode and, arranged above it, a vibration reflection body. The electrode and vibration reflection body are immersed in the paste bath, filling of the electrode is carried out, and the holding tool, electrode and reflection body are withdrawn from the paste bath. Above the paste bath, the excess paste is spun off the electrode by rotating the vertical rotary shaft, the reflection body also being cleaned of the paste.

Abstract: A method and apparatus for applying paste to a battery grid. An endless conveyor belt pulls a grid through a pasting zone where paste is impressed into the grid. The grid is further passed through a fixed orifice, after being impressed with paste to impart a predetermined thickness to the grid. The orifice may be defined by two plates.