| 摘要 |
<P>PROBLEM TO BE SOLVED: To provide a secondary battery which can decrease a temperature difference between a wound electrode body and a current breaking element as well as providing the current breaking element on an external face of a side wall of a case body so that excess temperature rising of the wound electrode body can be appropriately controlled by the current breaking element. <P>SOLUTION: The secondary battery 100 includes: the current breaking element 140 arranged on the external face of the side wall of the case body 181; and a heat conductor 171 arranged inside of the case body 181 at the position opposite to the current breaking element 140 so as to hold an element arrangement side wall (first side wall 181b) which is a side wall of the case body 181 in which the curent breaking element 140 is arranged, and thermally connecting an inner face 181g of the element arrangement side wall (the first side wall 181b) and the wound electrode body 110. <P>COPYRIGHT: (C)2013,JPO&INPIT |
