| 摘要 |
<P>PROBLEM TO BE SOLVED: To provide an electrode group for a nonaqueous battery excellent in impregnation property and moreover in productivity and reliability, and a cylindrical nonaqueous secondary battery. <P>SOLUTION: In the cathode plate 2, a cathode current collecting lead 70 is connected with a core material exposed part 78 formed in a central part of a current collecting core material 72, an anode plate 3 includes a both-face coated part 14 with an active material layer 13 and a porous protective membrane 28 formed on both faces of a current collecting core material 12, a core material exposed part 18 and a single face coated part 17 which is located between the both-face coated part 14 and the core material exposed part 18 and includes the active material layer 13 and the porous protective membrane 28 formed only one face of the current collecting core material 12. A plurality of groove parts 10 are formed on the both-face coated part 14, and the groove parts 10 are not formed on the single face coated part 17. The core material exposed part 18 is connected with an anode current collecting lead 20, and the anode plate 3 is wound around with the core exposed part 18 as a winding end. <P>COPYRIGHT: (C)2010,JPO&INPIT |
