Abstract: A battery in accordance with the invention comprises: p1 an electrochemical block (3) constituted by a large number of electrochemical couples; p1 a network for irrigating said electrochemical couples with electrolyte; p1 a heat exchanger (7) for externally dumping the heat evolved during discharge; p1 a pump (5) for causing the electrolyte (10) to circulate through the irrigation network and said heat exchanger; and p1 a device (2) for storing electrolyte and transferring it to said electrochemical block (3) on activation, said device including a supply of electrolyte connected to a gas generator and also to an inlet to said pump.

Abstract: In an activatable AgO/Al battery, the electrolyte tank is partitioned into two portions (31, 32) which are simultaneously filled on activation. During a first discharge stage electrolyte in one of said portions (31) is used and is then removed from the battery. During the second discharge stage, the battery operates using concentrated electrolyte to be found in the second portion (32) of the tank.

Abstract: An activatable battery including a heat exchanger, the battery comprising a Volta pile enclosed in an insulating envelope, with each cell of the pile comprising a porous cathode, a separator, a lithium anode, and a metal collector, and the heat exchanger being constituted by a circuit for forced circulation of the electrolyte, said circuit comprising:electrolyte injection manifolds (25) and electrolyte collector manifolds (26), both having openings to the outside of said insulating envelope;means for transferring electrolyte from the injection manifolds to the collector manifolds through each cell, said means including channels (121, 126) formed through at least one electrode of each cell; anda pump (22) for causing the electrolyte to circulate from the injection manifolds to the collector manifolds.

Abstract: A battery which is activatable by seawater and which uses electrochemical AgO/Al couples includes means (200, 12) for eliminating the aluminates which form in the electrolyte during discharge, and for regenerating the electrolyte.