| 摘要 |
PROBLEM TO BE SOLVED: To provide a sealed battery capable of securing its safety even if a cylindrical sealed battery in an erected state is crushed from above. SOLUTION: The sealed battery 10 is housed in a conductive cylindrical battery package can 6 where an upper part of a spiral electrode body 5 wound by a positive electrode plate 2 and a negative electrode plate 3 via a separator 4 is opened. A negative electrode collection tab 3a arranged on the negative electrode plate 3 is electrically connected with the battery package can 6, and a positive electrode collection tab 2a arranged on the positive electrode plate 2 is electrically connected with a terminal plate 12 arranged on an opening sealing body 10, and the opening sealing body 10 is airtightly fixed on the battery package can 6 by caulking the vicinity of an opening 6c of the battery package can 6. The positive electrode collection tab 2a is connected with the terminal plate 12 by coating it with an electrically-insulated positive electrode tab protection tape having heat-resisting temperature of 270°C or above, tensile strength of 120 N or above, and piercing strength of 9.8 N or above. COPYRIGHT: (C)2010,JPO&INPIT |
