| 摘要 |
PROBLEM TO BE SOLVED: To provide a battery with high reliability which does not have increase of internal resistance of battery against the shocks of falling and vibration or the like. SOLUTION: The cylindrical battery seals in a battery outer package case a nearly cylindrical electrode plate group which is wound in swirl shape through a belt-shape separator between a positive electrode plate consisting of a positive electrode mixture containing a positive electrode active material in a belt-shape positive electrode current collector and a negative electrode plate consisting of a negative electrode mixture containing a negative electrode active material in a belt-shape negative electrode current collector. A negative electrode lead connected to the negative electrode plate and the battery outer package case are electrically connected, and a positive electrode lead connected to the positive electrode plate, and a sealing body are electrically connected, and an upper insulating plate is arranged at the upper end of the cylindrical electrode group and a lower insulating plate is arranged at the lower end of the electrode group. The negative electrode lead arranged at the lower part of the lower insulating plate is folded back at least one time between the connecting point with the negative electrode plate and the connecting point with the case. COPYRIGHT: (C)2007,JPO&INPIT
|
