| 摘要 |
PURPOSE:To prevent a deterioration of the performance and the breakdown due to overcharge and achieve the prolongation of life and an improvement of the safety by disposing a separator containing a high molecular material revealing conductivity by the doping of ions between a positive electrode and a negative electrode. CONSTITUTION:In the inside of a battery case 1, a negative electrode 6 bonded to a negative terminal plate 2 through a collector 5 consisting of stainless net, a positive electrode 7 bonded to a positive terminal plate 3, and a separator 8 containing a high molecular material revealing conductivity by the doping of ions present between the both electrodes 6, 7 are mounted in the state dipped in an electrolyte. The combination of each kind of the electrode material of the both electrodes 6, 7, the high molecular material of the separator 8, and the electrolyte is selected in such a manner that the conversion voltage of the high molecular material is slightly higher than the charge terminating voltage in a secondary battery and nearly the same as the allowable voltage in a primary battery. Hence, a stable overcharge preventing function is given to the battery itself, and the prolongation of life and an improvement in safety can be achieved. |
