| 摘要 |
PROBLEM TO BE SOLVED: To provide a square secondary battery which is improved in insulation properties while suppressing the reduction in insertion properties of a wound group. ! SOLUTION: Disclosed is a square secondary battery C in which a flat wound group 3 and current collector plates 4A, 4B connected to the would group 3 are covered with an insulation protective film 2 and housed in a battery can 1. A heat-resistant film 101 is provided between the insulation protective film 2 and the current collector plates 4A, 4B. ! COPYRIGHT: (C)2015,JPO&INPIT |
