GB385577A - Method of and means for operating galvanic cells and batteries composed of such cells - Google Patents

Abstract

385,577. Galvanic cells ; charging and discharging electrolytes. LAMPENUND METALLWARENFABRIKEN R. DITMAR GEB. BRI1NNER AKT.-GES., Erste Haidequerstrasse, Vienna..-(Assignees of Doman, A. ; Budapest.) March 21, 1931, No. 8773. Convention date, April 9, 1930. Void [Published under Sect. 91 of the Acts]. [Class 53.] In galvanic batteries having a storage chamber for electrolyte connected with the working chamber, the electrolyte is transferred to and fro as required by suitable alteration of the gas pressures acting on the liquid levels in the two chambers. It is preferred to compress the gas in the storage chamber, e.g. by means of an air-pump, a compressible ball or a container of compressed air, so that the electrolyte is pressed into the working chamber after use, the electrolyte is drawn back to the storage chamber by releasing the excess pressure therein. To prevent the compressed air from entering the working chamber, a liquid seal should be arranged between the two chambers. In the battery illustrated in Fig. 1, the working chamber 1 is divided by a partition 12 into two compartments which communicate through apertures 13. The positive electrodes 15 have helical grooves 15a. The rubber discs 17 form a tight seal when compressed by nuts 19. The supply pipe 5 has a non-return valve 5x; and a screw 7 in the branch 6 controls an escape valve 6b. The apertures 9, 10, 11 are adapted to be closed. ;The liquid seal is provided by 'having pipes 4 which' extend almost to the bottom of the storage chamber 2. In a modification, several independent working chambers are arranged above a common storage chamber, and the walls may form the positive electrodes. The height of the battery may be reduced by having the storage chamber on the same level as the working chamber, in which case only one electrode is insulated from the electrolyte. The tubes 4 may be closed by a disc attached to a threaded spindle, and may be sealed by electrolyte-filled depressions 26, Fig. 5. Pans 25 for the reception of sediment may be provided. The distributing chamber may be small compared with the working chamber, electrolyte being transferred from and to a distant container through a pipe connected to this distributing chamber.