Connecting device with flux for separating a connecting element in the event of a fault

Abstract

A connecting device (1) for electrically connecting at least two terminals, comprising: - at least one connecting element (2) designed for conducting current between the at least two terminals, with at least two contact areas (2a, 2b) for electrical and mechanical connection to the respective terminal, wherein the connecting element (2) comprises a metallic material (3) and a passivation layer (4) that forms at least in one fault condition and encloses the metallic material (3), - a flux (8) that can be thermally activated by heat input due to a fault condition and which is designed to remove the passivation layer (4) in order to cut through the connecting element (2) in the molten area (2c) of the connecting element (2) in a fault condition that melts only the metallic material (3), characterized in thatthat the connecting device (1) is designed as a cell contacting system (9) for electrically connecting battery cells of an electrical energy storage device, wherein the at least one connecting element (2) is designed as a cell connector (10) for electrically connecting to each cell pole of the battery cells.

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