seen that during the discharge of a metal klorackumulator regulate the generation and matandet of chlorine from a lagringsrum for klorhydrat to accumulator

摘要

1452199 Metal-chlorine storage battery ENERGY DEVELOPMENT ASSOCIATES 2 July 1974 [2 July 1973] 29279/74 Heading H1B A storage battery 11 essentially as disclosed in Specification 1339060 having metal electrodes, preferably of zinc, and graphite electrodes to which chlorine is supplied, the chlorine being dissolved in an aqueous electrolyte, preferably of zinc chloride, and flowing through a circuit 15, 23, 13 including a pump 21, adjustable valve 27, and a dissolver 25 for dissolving the chlorine, has an additional flow circuit 29, 33 including a non- return valve 35, the chlorine hydrate store 31 and an adjustable valve 37. The temperature of the store 31 is maintained at a lower temperature than that of the electrolyte which enters from line 29, the electrolyte temperature being such, e.g. 15- 50‹C, that it decomposes the hydrate to form chlorine and water, the increase of pressure in the store caused by the generation of the products shutting the valve 35. The electrolyte flow through the store 31 thus ceases and no more chlorine is generated. On discharge, the battery 11 consumes chlorine causing a reduction in pressure to the lines 13, 33 whereby electrolyte flows through the store 31 to generate chlorine and make up the deficiency. The valves 27, 37 are set to give pressure drops such that the system is selfregulating in relation to the chlorine demands of the battery and operates to maintain the electrolyte saturated with chlorine. A small venting orifice 19 is provided in line 15.