| 摘要 |
1430907 Cells having coiled electrodes UNION CARBIDE CORP 12 Nov 1974 [13 Nov 1973] 48812/74 Heading H1B An electric cell, preferably of the rechargeable Ni-Cd type comprises a coiled or wound electrode-separator assembly and a conductive can in which the assembly is placed, the inner wound electrode being connected by means of a tab to a conductive cap of the can and the outer wound electrode being in contact with the interior of the can via at least one opening in a separator forming the outermost layer of the wound assembly. As shown in Fig. 2, the assembly is depicted prior to being wound and a circular window 25 is formed in separator 23 thereby exposing the edge portion 26 of electrode 21 together with a part 22 of the interelectrode separator. The hole 25 may be of variant sizes as shown dotted at 29, 30 and the electrode 21 is made on an expanded metal carrier so as to bulge out when the assembly is tightly coiled. The edge 26 may not appear in the window 25 and this window may be square, elliptical, diamond-shaped or rectangular. More than one window may also be provided. |
