公开(公告)号：EP1318561A4

公开(公告)日：2006-12-20

申请号：EP01955642

申请日：2001-08-09

申请人： MATSUSHITA ELECTRIC IND CO LTD

发明人： NAKANISHI MAKOTO ,  TAKAMURA KOSHI ,  AKIYA HIROYUKI ,  KOSHIBA NOBUHARU

IPC分类号： H01M2/02 ,  H01M2/04 ,  H01M4/64 ,  H01M4/66 ,  H01M6/10 ,  H01M10/04 ,  H01M10/05 ,  H01M10/0587 ,  H01M10/40 ,  H01M6/02

CPC分类号： H01M10/0413 ,  H01M2/0222 ,  H01M2/0285 ,  H01M2/0287 ,  H01M2/0408 ,  H01M4/043 ,  H01M4/64 ,  H01M4/661 ,  H01M10/0431 ,  H01M10/045 ,  H01M10/05 ,  H01M10/052 ,  H01M2006/106

摘要： A coin-shaped battery having a structure of improving a discharge capacity and preventing the deposition of lithium metal. A group of pole plates (1), formed by bending an anode plate (7) and a cathode plate (8) at a connection piece and coiling them flat so that the laminate surface of the anode plate (7) and that of the cathode plate (8) are layered one upon another via a separator (9), is housed in a battery case having the opening of a cap case (4) sealed by a sealing case (5). An insulating member is provided on the surface facing the end of the cathode plate (8) of the connection piece positioned in the center of the coiled anode plate (7).

公开(公告)号：EP1339115A4

公开(公告)日：2007-10-10

申请号：EP01972698

申请日：2001-10-04

申请人： MATSUSHITA ELECTRIC IND CO LTD

发明人： HAYASHI TETSUYA ,  NAKANISHI MAKOTO

IPC分类号： H01M2/02 ,  H01M2/26 ,  H01M4/02 ,  H01M6/12 ,  H01M10/04 ,  H01M10/052 ,  H01M10/40

CPC分类号： H01M6/12 ,  H01M2/0222 ,  H01M2/263 ,  H01M10/04 ,  H01M10/0431 ,  H01M10/052 ,  H01M2004/025 ,  Y10T29/49108 ,  Y10T29/49114

摘要： A positive electrode plate (7) and a negative electrode plate (8) are coiled around with a separator (9) interposed therebetween into a flat shape having a rectangular plan to obtain an intermediate product (17) of an electrode plate group, whose corners are then cut off along straight or curved lines to obtain a substantially octagonal electrode plate group (1a, 1b), so that it is accommodated in a negative electrode case (5) having a circular plan with good space efficiency. The problem of residual water in the coiled electrode plate group (1a, 1b, 1c) of a coin type battery having high load current characteristics is resolved by a vacuum dry treatment, and the problem of dust generated during the welding of leads is resolved by a method whereby dust is not scattered inside the case. Flat batteries with higher reliability are thus obtained.