Terminal connector for an electrochemical accumulator battery

Claim 1

A connection in an electrochemical accumulator battery for sealed lead-through of a screw-joint providing an electrical connection between two adjacent cells through an opening in a cell wall said connection comprising: a cell wall made of plastic material and having an opening, a pair of plate group busses each connecting a plurality of electrode plates, each plate group bus having a leg parallel with the cell wall and positioned on opposite sides of the wall, and each said leg having an opening aligned with the wall opening, and a screw having a threaded body portion and a head portion and extending through the openings in the wall and in the plate group busses to define a screw-joint, a nut engageable with the threaded body of the screw for holding the joint together, an annular spacer having an external diameter greater than those of the openings in the plate group bus legs and smaller than the diameter of the cell wall opening and having a thickness smaller than the thickness of the cell wall and made of a harder material than the cell wall material, said spacer carried around the body portion of the screw and positioned in the opening in the cell wall, wherein each leg of the plate group bus is arranged tightly against a side of the cell wall and is forced by the screw-joint against the spacer, an interjacent part of the cell wall between the plate group bus legs being deformable and acting as a sealing gasket between the two legs.