Abstract: The invention relates to an electrical storage cell (1) comprising a positive terminal (5), a negative terminal (4), a positive electrode (8) and a negative electrode (9) electrically connected to the positive terminal and to the negative terminal, respectively, a collector of a first polarity (20) having a plane part (21) electrically connected to the electrode of the first polarity, and bent electrical connection means (26) connecting the plane part of the collector to the terminal of the first polarity and having a bending radius of curvature less than that of a part having the same thickness as the plane part.

Abstract: A vent valve includes a vent cap closed by a cover plate with an orifice through it. The vent cap has a circular section and includes two diametrally opposed vent holes on its circumferential wall. An elastic seal having three vertices arranged in a triangle and connected in pairs by respective circular arcs—and preferably in the shape of a REULEAU triangle—is compressed between the bottom of the vent cap and the cover plate. The seal therefore blocks the orifice. If the fluid pressure at the orifice is sufficiently high, the fluid compresses the seal further and makes a path for itself between the seal and the cover plate and then escapes through the vent holes. The vent valve is suitable for use in a storage cell, in which case the cover plate can be used to close its casing.

Abstract: An electrochemical cell presents two poles disposed on opposite faces. Each pole has an endpiece with at least one projecting substantially plane portion. Each of these portions is shaped so as to be capable of being placed against a projecting plane portion of the other pole of another electrochemical cell by means of a movement in translation. The invention enables electrochemical cells to be assembled together simply and quickly. The position and shape of the endpieces is suitable for allowing welding tools to pass. Assembly impedance is low because of the large current-passing section and because of the way assembly is performed.