| 摘要 |
<P>PROBLEM TO BE SOLVED: To provide an electrochemical device preventing rupture and ignition caused by temperature rising on the inside of an armoring body and tremendously increasing safety. <P>SOLUTION: The electrochemical device comprises an electrode matrix 85 including a multilayer structure composed of a positive electrode 20, a negative electrode 10, and a first separator 40, and first and second dummy electrodes 60, 70 electrically connected to the positive electrode 20 and the negative electrode 10, respectively. The first and second dummy electrodes 60, 70 have respective opposing parts 80 opposing each other through a second separator 45 at an outer peripheral part of the electrode matrix 85. One or each of the first and second dummy electrodes 60, 70 has a resistance control layer at least on a side where the opposing parts 80 oppose each other. The resistance control layer has such a resistance value that an estimated internal short circuit current between the first and second dummy electrodes 60, 70 is equivalent to 0.09 to 1.00 C. The first and second dummy electrodes 60, 70 are adapted to short-circuit each other at a lower temperature than the positive electrode 20 and the negative electrode 10 do. <P>COPYRIGHT: (C)2010,JPO&INPIT |
