Importance

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Abstract

A battery comprises a stack of electrochemical cell units (1) each comprising a positive electrode (2), a solid electrolyte (3) and a negative electrode (4), the electrodes of the cell units being interconnected by means of a plurality of connector devices (7, 8) each comprising a base section (7a, 8a) connected to an electrode and a pair of contact sections (7c, 8c) extending from the cell unit, the devices (7, 8) being arranged in two stacks with the pairs of contact sections (7c, 8c) of the devices in each stack overlying one another to form two sets of contact sections, adjacent contact sections (7c, 8c) of each set being interconnected with successive interconnections throughout each stack of connector devices alternating between the two sets of contact sections. Unit cells may be connected in parallel or series. Connector devices (7, 8) of opposite polarity may be provided symmetrically either side of a centerline about which the unit cell (1) can be rotated 180.degree. to be stacked in either of two orientations. The connector devices (7, 8) may be provided at adjacent corners of rectangular unit cells.

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First Claim