| 摘要 |
<P>PROBLEM TO BE SOLVED: To provide a cylinder-shaped lithium ion secondary battery which lets overcharged voltage dissipate by immediately inducing fine short-circuit when charged voltage of the battery reaches to designated overcharged voltage. <P>SOLUTION: The cylinder-shaped lithium ion secondary battery includes an electrode assembly 710, a center pin 720 combined with the electrode assembly, a circuit member 730 assembled in the center pin and short-circuited when the charged voltage becomes reference voltage or more, a can 740 for housing the center pin where the circuit member is assembled and the electrode assembly, and a cap assembly 750 combined with an opening of the can. <P>COPYRIGHT: (C)2010,JPO&INPIT |
