| 摘要 |
<p>Cylindrical alkaline manganese dioxide-zinc cell with improved bottom sealing, where the cell comprises a coaxial assembly of a metal can closed at the bottom, a cylindrical cathode inserted in the can up to abutment at the bottom with an insulating member, a separator system in direct contact with internal surface of the cathode, a zinc anode arranged in the hollow interior of the separator system and insulated from the can, an alkaline electrolyte. The separator system extends up to the bottom end of the cathode, and a thermoplastic sealant is provided at the bottom edge zone of the separator system extending into said zone as a bead. The sealant impregnates the separated system at said edge zone. The insulating member can be a disc or ring-like insulator washer arranged between the bottom of the can and that of the cathode, and the separator system and the sealant extends at the contact zone of the edge of the separator and the washer and takes the form of a thin concave bead.</p> |
