ELECTROCHEMICAL ACCUMULATOR WITH HOUSING AND OUTPUT TERMINAL MADE OF ALUMINIUM ALLOY

摘要

An electrochemical accumulator including: at least one electrochemical cell made of at least one cathode and one anode and, on either side of an electrolyte, two current collectors, one of which is connected to the anode and the other to the cathode; a housing made of aluminium alloy arranged such as to sealingly contain the electrochemical cell(s); two current-output terminals, one of which is welded to a wall of the housing, the output terminal welded to the housing being made of an aluminium alloy having a magnesium content (Mg) that is no lower than 0.01% and no higher than 4%, and a copper content that is no lower than 0.05% and no higher than 0.3%, the aluminium alloy of the output terminal welded to the housing having a metallurgical state which grants same a breaking strength (Rm) of no less than 60 MPa.

主权项

1. An electrochemical accumulator including:
at least one electrochemical cell consisting of at least one cathode and one anode and on either side of an electrolyte, two current collectors one of which is connected to the anode and the other to the cathode, a casing made of aluminum alloy, arranged to contain the electrochemical cell(s) with seal tightness, two current output terminals, one of which is welded to a wall of the casing, the output terminal welded to the casing being made of an aluminum-based alloy comprising a magnesium (Mg) content higher than or equal to 0.01% and lower than or equal to 4%, and a copper content higher than or equal to 0.05% and lower than or equal to 0.3%, the aluminum alloy of the output terminal welded to the casing having a metallurgical state providing it with a yield strength (Rm) higher than or equal to 160 MPa.