| 摘要 |
<p>An electrochemical cell, preferably a cylindrical cell, is provided comprising: a can (312) for containing electrochemically active materials including positive and negative electrodes and an electrolyte, the can (312) having an open end, a closed end with an end wall (314) extending across the closed end, and side walls extending between the open and closed ends; a first cover (345) positioned across the open end; and a pressure relief mechanism (370) formed in a surface of the can (312), preferably an arc-shaped groove (372) formed in the end wall (314) of the can (312). A second cover (311) is preferably positioned on the end wall of the can (312) to be in electrical contact therewith and to extend over the pressure relief mechanism (370). Also provided is a method of preparing an electrochemical cell comprising the steps of: forming a can (312) having an open end and a closed end; forming a pressure relief mechanism (370) in a surface of the can (312); dispensing electrochemically active materials in the can (312); and sealing a first cover (345) across the open end of the can (312). The cell construction allows a large internal volume to be available for containing electrochemically active materials.</p> |
