发明申请
- 专利标题: Battery and Center Pin
- 专利标题(中): 电池和中心针
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申请号: US11718844申请日: 2005-11-01
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公开(公告)号: US20070269711A1公开(公告)日: 2007-11-22
- 发明人: Takeshi Meguro , Yoshihiro Dokko , Hiroyuki Suzuki , Tadashi Miebori , Shinji Hatake , Yuzuru Fukushima
- 申请人: Takeshi Meguro , Yoshihiro Dokko , Hiroyuki Suzuki , Tadashi Miebori , Shinji Hatake , Yuzuru Fukushima
- 申请人地址: JP Tokyo 108-0075
- 专利权人: Sony Corporation
- 当前专利权人: Sony Corporation
- 当前专利权人地址: JP Tokyo 108-0075
- 优先权: JP2004-323996 20041108; JP2005-080445 20050318
- 国际申请: PCT/JP05/20106 WO 20051101
- 主分类号: H01M4/00
- IPC分类号: H01M4/00
摘要:
A battery with improved safety that can more surely short-circuit electrodes when flattened out by the external force is provided. A center pin (30) is inserted in the center of a spirally wound electrode body formed by layering and spirally winding a cathode and an anode with a separator in between. The center pin (30) has a cut line (31) provided in the longitudinal direction and a first cutout (32) vertically crossing the cut line (31). When flattened out by the external force, a corner (33) at an intersection of the cut line (31) and the first cutout (32) is projected, and short-circuit is surely generated. Further, it is preferable that the center pin (30) has a second cutout (34) in the direction perpendicular to the cut line (31) in a position facing the cut line (31) in the circumferential direction. It is also preferable that the center pin (30) has a cross sectional shape of an oval or an ellipse, and the cut line (31) is provided in a position where the diameter of the oval or the ellipse is the largest.
公开/授权文献
- US08206844B2 Battery and center pin 公开/授权日:2012-06-26