| 摘要 |
1,175,445. Terminal structures for cells having plastics envelopes. TELEPHON-UND TELEGRAPHEN - FABRIKS - A.G. KAPSCH & SÍHNE IN WIEN. 26 May, 1967 [27 May, 1966], No. 24648/67. Heading H1B. A can-type primary cell is completely enclosed in a plastics envelope, and has terminals formed from sheet metal, each having a first portion outside the envelope, a second portion passing through the envelope, and a third portion inside the envelope and contacting the associated electrode, the second portion being formed with a series of apertures, the plastics material on each side of the metal sheet being united and drawn tightly together by portions of the material extending through the apertures, the extent of embedding measured along the surface of the terminal between inner and outer surfaces of the envelope being substantially greater than the thickness of the sheet metal in the region of embedding. Fig. 1 illustrates such a cell in general: the cell comprises a cup (e.g. zinc) electrode 1, a rod (e.g. carbon) electrode 2, a plastics envelope 3 of a thin gas-permeable material, e.g. high-pressure polyethylene, in the cylindrical part, and of a gas- and liquid-tight thick material, e.g. low-pressure polyethylene, at top 4 and bottom 6, and upper 5 and lower 7 terminals according to the invention. Fig. 4 shows a preferred upper terminal in which the central section 50b, containing the holes 50d through which the plastics " rivets " 4a pass, is conical, to increase the embedded area, and the lower rim 50c contacts the rod electrode 2 via the resilient flange 2b of the electrode cap 2a. Suitable structures (not shown) for the terminal 7 contacting the can electrode are also described. |
