| 摘要 |
PROBLEM TO BE SOLVED: To reduce to a limit a negative effect on a bottom surface of an outer package can at resistance welding with a lead surely connected with resistance welding to an outer package can, and effectively prevent leakage due to an outer package can damage generating with time. SOLUTION: The sealed battery stores an electrode body 1 structured from a positive electrode, a negative electrode and a separator, in its outer package can 2. A collector plate 3 electrically connected to the positive electrode or the negative electrode is fixed to the bottom surface of the electrode body 1, and that, this collector plate 3 is fixed to the inner bottom surface 2a of the outer package can 2. A part of the collector plate 3 is firmly fixed to the inner bottom surface 2a of the outer package can 2. Moreover, an insulator 4 is interposed in a non-fixed part 5 between the collector plate 3 and the outer package can inner bottom surface 2a.
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