| 摘要 |
1,102,222. Electrochemical battery cells. YARDNEY INTERNATIONAL CORPORATION. 24 March, 1965 [24 March, 1964], No. 12502/65. Heading H1B. Rechargeable electrochemical battery cells, such as that shown in Fig. 1, comprise a housing 100 with a closed inner peripheral wall; an electrically conductive core 101 coaxially disposed within the housing in spaced relationship to the wall and generally parallel thereto for defining an annular chamber between the core and the wall, an electrode assembly 102 including at least two foil-like strip electrodes of opposite polarity having their major surfaces and their narrow heights extending in the vertical direction and substantially parallel to the core, and separator strip means, at least in part semi-permeable and swellable sandwiched between the electrodes, the electrode assembly circumferentially surrounding the core and substantially filling the chamber, the core forming a terminal for the positive electrode and the housing forming a terminal for the negative electrode, the cell being substantially filled with electrolyte in which the negative electrode strip is soluble, and the electrodes being so dimensioned that the edge to surface ratio is small. The core shown in Fig. 1 is hollow, so as to contain a pressure-bleed valve 111 for the relief of gas through the action of a screw 112 which selectively opens and closes a bleed channel 113 in valve body 111<SP>1</SP>. A pressure activated cutoff switch 116 is located in the core 101, which upon build-up of gas pressure is actuated thereby opening the charging circuit connected to it through the cell terminals and terminating the charge. The electrode assembly suitable comprises silver oxide/zinc pairs, silver oxide/ cadmium, nickel oxide/zinc, nickel oxide/ cadmium, lead acid, manganese dioxide/zinc and mercuric oxide/zinc. An alkaline electrolyte such as potassium hydroxide is suitably used. |
