| 摘要 |
1,212,086. Bi-polar electrodes for zinc/air batteries. GULF GENERAL ATOMIC Inc. 29 Jan., 1968 [1 Feb., 1967], No. 4402/68. Heading H1B. A bi-polar electrode for a zinc/air battery comprising a porous, conductive plate 13 forming the cathode and an impervious metal plate 15 having a depression 39 formed therein, the plates 13, 15 being joined together around the rim of the depression in gas-tight manner so as to electrically connect them and to form a gasplenum chamber 17 and a gas inlet to the plenum chamber comprises a flow restriction means 49 separate from plates 13, 15 in the inlet. The flow restriction means serves to throttle the gas flow in the event of the porous plate rupturing. In the battery described each backing plate 15 contains a plurality of depressions 39 forming an assembly of seriesparallel connected electrodes with an equal number of cathode plates 13, the cathode plates 13 being additionally supported by being welded to the apices of dimples 43 formed in backing plate 15 as can be seen in the exploded view of Fig. 2. The flow restriction means 49 is in the form of an annular member having one flat surface in which a number of grooves 51 are formed. Grooves 51 form with the cathode plate 13 a number of restricted passageways by which gas enters plenum chamber 17 (Fig. 8). The Zn anode 55 is deposited on the outer surface of backing plate 15 and fits into a vacant space in a frame member 23 of an adjacent subassembly in the cell stacks. |
