| 摘要 |
<P>PROBLEM TO BE SOLVED: To provide a nonaqueous electrolyte secondary battery in which a connection reliability between an anode terminal and a lead under conditions of a high temperature/high humidity environment for a long period, a rapid charging, an excessive discharging and a high output discharging is improved. <P>SOLUTION: The nonaqueous electrolyte secondary battery is provided with an outer can 1, a cathode housed in the can, an anode having an active substance storing lithium ion at an electric potential of 0.4V or higher against a lithium electrode potential and a separator arranged between the anode and the cathode, a nonaqueous electrolyte, leads 17, 18 each connected with the cathode and the anode, and terminals which are fixed with the outer can and are electrically connected respectively with the other ends of each of the terminals. As for an inner resistance, a AC impedance value is 10mΩ or less and the anode lead 17 is made of aluminum of a purity 99 wt.% or more or aluminum alloy of a purity 99 wt.% or more and moreover as for the anode terminal, at least its surface to be connected with the lead is made of aluminum alloy of an aluminum purity less than 99 wt.% containing one or more of metal compositions selected from Mg, Cr, Mn, Cu, Si, Fe and Ni. <P>COPYRIGHT: (C)2009,JPO&INPIT |
