Pile électrique.

摘要

720,069. Batteries. RAY-O-VAC CO. Sept. 5, 1952 [Sept. 5, 1951; June 2, 1952], No. 22408/52. Class 53. A dry battery is made by attaching a number of bipolar electrodes Z, C, Figs. 1 and 2, to insulating strips 21, 211 by adhesive 34, placing one strip on the other with intermediate manganese dioxide and graphite cakes 19 and electrolyte absorbent pads 18 as shown in Fig. 3. The electrodes Z, C consist of pairs of zinc plates connected by tabs 13, one plate C of each pair being coated with a conductive layer such as a plastic material containing carbon. After the strips 21, 211 have been superimposed the edges are stuck together and the strips folded zigzag fashion at the points 41 to form a number of cells in series as shown in Fig. 4, each cell being entirely enclosed in an insulating pocket formed by the strips 21, 211. To form a stack of cells joined in parallel the tabs 13 and strips 21, 211 are cut and the cells rearranged to bring all the terminals of like polarity to one side of the stack. A conductor is then soldered to the terminals on each side of the stack. Instead of the two strips 21, 211 a single wide strip may be used folded longitudinally to enclose the cell elements. Fig. 7 shows a zinc bipolar electrode having one portion protected from the electrolyte by being sandwiched between an insulating sheet 6 and a conducting sheet 5. The two parts of the electrode are folded over one another with a depolarizer cake and electrolyte and enclosed in a strip of insulating material to form a single cell. A number of cells in series may be formed by securing a number of such electrodes to strips 21, 211 as described with reference to Figs. 1 to 4.