| 摘要 |
PROBLEM TO BE SOLVED: To prevent reduction in sealability between a case and an electrode terminal due to the occurence of creep phenomenon in a seal member.SOLUTION: In a secondary battery, a positive electrode terminal 41 is fixed to a lid 14 of a case, and a positive electrode conductive member 33 and an electrode assembly body 20 are housed in the case. A seal member 19 is located between the positive electrode terminal 41 and the lid 14. The seal member 19 has a flange portion 19b along the lid 14. The positive electrode terminal 41 has a protrusion 44 protruding from the lid 14; and the protrusion 44 has a screw portion 44a and a non-screw portion on its outer peripheral surface. A fastening member 55, which is screwed with the screw portion 44a and presses the flange portion 19b to the lid 14 side by being press-fitted into the non-screw portion, is fastened to the protrusion 44. |
