公开(公告)号：US4881026A

公开(公告)日：1989-11-14

申请号：US66208

申请日：1987-06-25

申请人： Yasumasa Ishida ,  Hiroyuki Kawamoto ,  Motoi Wada ,  Hisamitu Hatoh ,  Yoshiteru Miyatake ,  Sadao Mori ,  Eiji Takahashi

发明人： Yasumasa Ishida ,  Hiroyuki Kawamoto ,  Motoi Wada ,  Hisamitu Hatoh ,  Yoshiteru Miyatake ,  Sadao Mori ,  Eiji Takahashi

IPC分类号： H01M10/39 ,  G01R31/36 ,  H01M10/48

CPC分类号： G01R31/3665 ,  H01M10/48

摘要： Disclosed is a method and apparatus which can detect progress of degradation of a sodium-sulfur cell and predict possibility of final breakdown of the cell in a very near future before such a final breakdown of the cell actually occurs. The method and apparatus for diagnosing the presence or absence of an abnormal state in the sodium-sulfur cell, containing a porous electrical conductive material impregnated with molten sulfur or sodium polysulfide as its positive electrode reactant and containing sodium as its negative electrode reactant, comprises observing the operating voltage of the cell during charging and discharging so as to detect occurrence of a minute ripple in the operating voltage, and, when the amplitude of the ripple and the frequency of occurrence of the ripple increases as a result of repeated cycles of charging and discharging, deciding that degradation of the cell has progressed to an extent that final breakdown of the cell will occur in a very near future.

摘要翻译： 公开了一种方法和装置，其可以在细胞的这种最终击穿实际发生之前不久将来检测钠 - 硫电池的降解进程并预测细胞的最终破坏的可能性。 用于诊断钠硫电池中存在或不存在异常状态的方法和装置，其含有浸渍有熔融硫或多硫化钠作为其正极反应物并含有钠作为其负电极反应物的多孔导电材料包括观察 在充电和放电期间电池的工作电压，以便检测工作电压中微小纹波的发生，并且当纹波的振幅和纹波的发生频率由于重复的充电循环而增加时，以及 放电，决定细胞的降解已进展到细胞的最终破坏将在不久的将来发生的程度。