| 摘要 |
820,604. Batteries. UNION CARBIDE CORPORATION. Oct. 1, 1957 [Oct. 8, 1956], No. 30626/57. Class 53. A gas-depolarized cell consists of a metal anode 10, Figs. 4, 5, of zinc, aluminium, magnesium, or cadmium, for example, in contact with a paper, methyl cellulose or other porous separator 12 impregnated with zinc chloride solution or other electrolyte, and surrounded by a plastic frame 14. A regenerated cellulose or other permeable diaphragm 16 covers the frame and separator, and below the diaphragm is a mass 18 of permeable material such as paper to which acetylene black or platinum has been applied. A second waterproofed layer 20 which may consist of paper rendered conductive by carbon black serves as a diffuser to allow the passage of gas to the mass 18. The cathode consists of a steel plate 24 covered with a carbonaceous paint 22, 26. All the elements of the cell are shaped as the major part of a circular disc, as shown in Fig. 4. A number of cells are stacked together and joined in parallel to form a pack, as shown in Figs. 2, 3. A circular ring 30 is divided by a chord 32 into two unequal parts, the stack of cells being housed in the larger part, and the terminals 34, 36 being brought out through gas-tight openings in the chord. The sides of the pack are closed by covers 38, 40 sealed to the ring 30. When the cells are to be activated, gas, for example chlorine, is admitted through openings 42, 44 which are closed by frangible diaphragms 46, 48 until the cells are required for use. A battery is made up from a number of packs joined in series and enclosed in a container 50, as shown in Fig. 1. The container is closed by a cover 52 carrying the terminals 54, 56. Chlorine under pressure is contained in a coiled tube 58, one end of which is sealed, the other end 61 leading to the interior of the container. A valve 62 controls the flow of gas. The packs are maintained under pressure by tapes passing round end boards 66. |
