ELECTRODE BODY FOR SECONDARY BATTERY, SECONDARY BATTERY AND VEHICLE

摘要

PROBLEM TO BE SOLVED: To provide an electrode body for a secondary battery which can reduce a dead space of the secondary battery having a plurality of winding type power generation elements, attain improved volume energy density, and also prevent power generation element from being overcharged and over-discharged.

SOLUTION: An electrode body 10 for the secondary battery is an electrode body for a winding type secondary battery in which a belt-like positive electrode 11 having an active material layer 11a and a belt-like negative electrode 12 having an active material layer 12a are wound while a belt-like separator 13 is interposed between both electrodes. The belt-like positive electrode 11 and the belt-like negative electrode 12 are wound so as to make two wound parts 14 by each single belt-like electrode.

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