| 摘要 |
<P>PROBLEM TO BE SOLVED: To provide a lithium secondary battery capable of reducing a housing space of a battery armoring body, and of enhancing volume energy density of the battery, in a lithium secondary battery using a plurality of positive electrodes. <P>SOLUTION: This lithium secondary battery is provided with: a plurality of positive electrodes; one or more negative electrodes; separators arranged between the positive electrodes and the negative electrode(s); battery armoring bodies 10 and 11 for housing an electrode body composed of the positive electrodes, the negative electrode(s) and the separators; and positive electrode collector tabs 1 attached to the respective positive electrodes for connecting the respective positive electrodes to positive electrode terminal parts of the battery armoring bodies. The lithium secondary battery is characterized in that the electrode body 20 is composed by stacking the plurality of positive electrodes together with the negative electrode(s) by interposing the separators; and, in the stacked state, the positive electrode collector tabs 1 of the positive electrodes are arranged by being shifted to a plurality of parts. <P>COPYRIGHT: (C)2008,JPO&INPIT |
