Lithium secondary battery

Details Lithium secondary battery Lithium secondary battery

H - Electricity

01

M

H01M 10/24 (2006.01) H01M 2/26 (2006.01) H01M 10/40 (2006.01) H01M 6/10 (2006.01)

Patent

CA 2265324

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 with to the positive electrode and negative electrode was set to remain within the range of ~20% of the averaged 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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