Back to results
US 3,941,616 AGranted
Sea water battery
AssigneePuolustusministerio
InventorEsko Ensio Huhta-Kowisto
Life of this patent
Estimating the term…
Loading patent…
Loading patent…
AssigneePuolustusministerio
InventorEsko Ensio Huhta-Kowisto
Estimating the term…
A so-called sea water battery is disclosed which has a battery cell system with electrode plates, preferably magnesium and silver chloride plates, and using as electrolyte a solution of chemicals introduced from the outside into its cell system. According to a particular charcteristic of the invention, the pipe or duct by which water is supplied into the cells contains an ejector mechanism drawing from a particular tank a solution of chemicals and admixing this solution with the feed water. The chemicals thus introduced into the battery serve one or several of the following purposes: to increase the conductivity of the electrolyte; to counteract excessively vigorous dissolution of the electrode materials; and to improve the efficiency of the electrolyte. According to an optional characteristic of the invention, the chemicals to be introduced as has been said are provided in said particular tank in solid form, and water is passed through said tank to solve them and to carry them off. According to further optional characteristics, the equipment forming, in combination, a complete battery unit comprises control equipment and control means, such as valves, and/or a heat exchanger for exchanging heat between the spent electrolyte emerging from the cell system and the entering supply water, these various means being arranged so as to counteract undesirable changes of the battery's voltage output.
A discardable sea water battery especially adapted for torpedoes, comprising a battery cell system having electrode plates of magnesium and silver chloride, an input duct connected with said battery cell system, an inlet pipe connected with said input duct, an ejector carried by said inlet pipe, a discharge duct connected with said battery cell system, a discharge pipe connected with said discharge duct, a tank adapted to contain a solution, and means connecting said tank with said ejector and with sea water for supplying sea water to said ejector while mixing it with the solution from said tank, said sea water mixture flowing through said input duct into the battery cell system where it serves an electrolyte and leaving the battery cell system through said discharge pipe, said solution containing chemicals impoving the efficiency of the electrolyte.
Sea water battery according to claim 7, characterized in that the tank (11) contains substances in solid form and that into the upper part of the tank water is conducted through a pipe (16) and that said solution is conducted to the ejector (9) through a supply pipe (10) from the lower part of the tank (11), where the density of said solution and the concentration of the different substances are highest.
Dependencies are inferred from the claim text.