| 摘要 |
677,291. Batteries. SOC. DE LA PILE LECLANCHE. Feb. 21, 1950 [Feb. 25, 1949], No. 4432/50. Class 53. Dry cells of the kind which can be joined in series by being stacked one upon another are individually enclosed in a sheet or sheets of natural or synthetic plastic material which are folded round the cell, the meeting edges of the sheets being welded together. The sheets are provided with openings to expose the electrodes which are to make contact with the electrodes of adjacent cells. Fig. 2 shows a cell comprising a zinc plate 1, the exposed surface 2 of which is covered with conductive varnish, the upper surface of the zinc being covered with electrolyte paste spread on a cellulose sheet 3 impregnated with electrolyte. Above the sheet 3 is a depolarizing agglomerate 4. The elements of the cell are enclosed between two sheets 5, 6 of insulating material which are first laid on the upper and lower surfaces of the cell and then folded about the sides, the meeting edges 7 of the sheets being welded together. The sheets are provided with openings 8, 9. Fig. 4 shows a modification in which one of the sheets, 6, is not folded about the cell and is welded to the sheet 5 which is folded down to cover all the sides of the cell. In a further modification a single sheet is folded about the cell, the free edges being welded together to form an envelope enclosing the cell. Specifications 556,907 and 624,788 are referred to. |
