| 摘要 |
PROBLEM TO BE SOLVED: To provide a lithium secondary battery, in which reduction in thickness without using a heat shielding plate can achieved, and which has high durability against repeated charging and discharging, and a longer cycle life span. SOLUTION: A concave portion 102a, a member 101a having a flange portion 103a at the peripheral portion of the concave portion and a member 101b having the concave portion 102a and the member 101a at the peripheral portion of the concave portion are arranged so that the concave portions are positioned toward the inner side. In the concave portions to which the flange portions are attached by fusing and which are surrounded by the members 101a and 101b, a battery member including a positive electrode, a negative electrode and an ionic conductor is housed. In the member 101a, a positive electrode output terminal 104 to the outside, communicating to the battery member, a negative electrode output terminal 106, and an insulating portion 105 serving to insulate the positive electrode output terminal 104 and the negative electrode output terminal 106 are installed. |
