Lithium secondary battery
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United States of America Patent
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-
Apr 30, 2002
Grant Date -
Nov 8, 2001
app pub date -
Mar 10, 1999
filing date -
Mar 18, 1998
priority date (Note) -
Expired
status (Latency Note)
Importance
Abstract
A lithium secondary battery includes a battery case, an internal electrode body contained in the battery case and including a positive electrode, a negative electrode and a separator made of porous polymer. The positive electrode and the negative electrode are wound or laminated so that the positive electrode and negative electrode are not brought into direct contact with each other via the separator. The respective resistance value of multiple tabs for electricity collection to be connected to the positive electrode and negative electrode was set to remain within the range of .+-.20% of the average resistance value of the tabs. The lithium secondary battery maintains a good charge-discharge characteristic even during high-output cycle operation and in particular may be preferably used for a drive motor of an electric vehicle.
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