| 摘要 |
1477181 Metal-air batteries YARDNEY INTERNATIONAL CORP 28 Aug 1974 [10 Sept 1973] 37582/74 Heading H1B A metal-fluid battery comprises a container 12, a stack of series connected cells 26 which are arranged to define fluid supply passage ways 36, 66 and a fluid return passageway 68, and a fluid cooling system 90, 92. Each cell comprises an annular plastics frame 28 on which an anode collector 56, electrolyte 54 and a cathode 60 are mounted. The anode collector consists of a copper or nickel diaphragm, the electrolyte is potassium hydroxide mixed with anodic material such as zinc or aluminium particles and mercury oxide additive, whilst the cathode is formed of layers of nylon, carbon and P.T.F.E. backed by a nickel or copper screen. The passageways 66 are formed by bands 64 on the rings 30, 32 of the frames 28 and a grid 70 which provides the inter cell connections is positioned in each passageway. The fluid is preferably air or oxygen supplied to the battery via an inlet 98 which is also used to supply water or water vapour to the electrolyte to activate the cells. The oxygen is circulated in the battery by a blower 84 driven by a motor 86, the oxygen being cooled by a cooling core 90 provided with coils 92 which are connected to a water inlet and outlet 96. The assembly including a cover 18, the motor, the blower and the cooling core is removable to enable an expanded cell stack to be replaced. In a modification, Fig. 4 (not shown), the battery does not include a motor driven blower but is supplied with oxygen from an external compressor and water cooled heat exchanger arrangement. The electrolyte may include a water retaining gel and the batteries may be used in submersible vessels. |
