| 摘要 |
PROBLEM TO BE SOLVED: To provide a secondary battery with a safety valve, in which proper operation of the safety valve is secured by solving such a situation that an electrode plate group blocks a degassing hole. ! SOLUTION: The secondary battery with a safety valve includes; a container obtained by sealing an opening of a container body 2 by a lid 3; an electrode plate group 4 which is housed in the container and spirally wound with a separator 16 interposed between a positive electrode and a negative electrode; a safety valve 8 which is provided in the lid 3 and blocks a degassing hole 7 provided in the lid 3 when pressure in the container is a prescribed pressure or under; electrode terminals 5, 6 which are supported by the lid 3 and whose outer ends protrude to the outside, and whose inner ends are electrically connected to either one of the positive electrode or the negative electrode of the electrode plate group 4; and a degassing hole securing member 30 which is arranged in a region sandwiched by t |
