| abstract |
PROBLEM TO BE SOLVED: To provide a non-aqueous electrolyte secondary battery which is excellent in output characteristics such as large current discharge or pulse discharge during normal use, and in which current is suppressed at the time of abnormality such as external short circuit. SOLUTION: An outer can that also serves as a unipolar terminal having an open end, an electrode body housed in the outer can, comprising a negative electrode, a separator and a positive electrode, a non-aqueous electrolyte housed in the outer can, A sealing lid group for hermetically sealing the opening of the outer can with an insulating member interposed therebetween is provided.The sealing lid group has a plate shape without holes, and has an easily breakable portion that can be broken by an increase in internal pressure accompanying gas generation. And a PTC element having the same. [Selection diagram] Fig. 1 |