Title: Sea water battery

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Claims: I claim:

1. 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.

2. 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.

3. Sea water battery according to claim 2, characterized in that in the supply pipe (10) leading from the tank (11) to the ejector (9) there is a control valve (15), the position of which is controlled by control means (12) governed by the battery voltage, in a direction tending to counteract the changes of said voltage.

4. Sea water battery according to claim 3, characterized in that the water supply to the battery cell system (1) as well as the removal of spent electrolyte has been arranged at least partially to pass through a heat exchanger (13), wherein the spent electrolyte gives off heat to the supply water.

5. Sea water battery according to claim 4, characterized in that in the spent electrolyte discharge pipe (8) there is a control valve (14), by means of which the proportion of electrolyte discharged through the heat exchanger (13) and of directly discharged electrolyte is controlled, the position of the control valve (14) being controlled by control means (12) governed by the battery voltage, in a direction tending to counteract the changes of said voltage.

Other info:

Inventors: Huhta-Kowisto, Esko Ensio (Haukilahti, SF)

Application Number: 511195
Filing Date: 1974-10-02
Publication_date: 1976-03-02
Assignee: Puolustusministerio (Helsinki, SF)
Primary Class(es): 429/119 429/219
Other Classes:
US Patent Ref:

3012087	Dec, 1961	Van Billiard et al.	136/100.
3463671	Aug, 1969	Doll et al.	136/100.
3470032	Sep, 1969	Egan	136/100.
3542598	Nov, 1970	White et al.	136/100.
3607428	Sep, 1971	Marzolf	136/100.
3713413	Jan, 1973	Nakamura	136/100.

Other Refs:
Primary Examiner: Kaplan, G. L.
Assistant Examiner: LeFevour, C. F.
Attorney: Richards & Geier