| 摘要 |
PROBLEM TO BE SOLVED: To steadily connect the current collector lead to the electrode terminal in the secondary battery having a plurality of current collector leads. SOLUTION: In the secondary battery, three current collector leads 31, 32, 32 of the positive electrode are composed of one main lead 31 and two sub leads 32, 32, and the top end 31a of the main lead 31 is welded to the rear face of the sealing plate 11 that composes an electrode terminal part 13 of the positive electrode, and the top ends 32a, 32a of the sub leads 32, 32 are welded to the middle part 31b of the main lead 31. And three current collector leads 41, 42, 42 of the negative electrode are composed of one main lead 41 and two sub leads 42, 42, and the top end 41a of the main lead 41 is welded to the bottom face of the negative electrode can 12 that is the terminal part 18 of the negative electrode, and the top ends 42a, 42a of the sub leads 42, 42 are welded to the middle part 41b of the main lead 41. |
