| 摘要 |
<p><P>PROBLEM TO BE SOLVED: To provide a secondary battery having high heat dissipation during generating heats, and a battery performance with high reliability. <P>SOLUTION: A belt-like separator 50 is sandwiched between a positive electrode 30 and a negative electrode 40. A battery 10 has an electrode wound body 20 made by laminating and winding the positive electrode 30, the negative electrode 40 and the separator 50; and a case member 70 for housing the electrode wound body 20 inside. In the electrode wound body 20, the separator 50 is wound beyond a positive electrode coating end part 32E positioned on an outermost periphery of a positive electrode coating part 32, and a negative electrode coating end part 42E positioned on outer periphery of a negative electrode coating part 42. An aluminum gap filler 60 is provided between gaps s1, s2 between a separator outermost periphery 50E positioned on an outermost periphery of the separator 50 and first and third sides 71, 73 of the case member 70. <P>COPYRIGHT: (C)2012,JPO&INPIT</p> |
