PURPOSE: To improve the reliability for the charge and discharge cycle life by piling a lithium plate, a porous aluminum plate, and a lithium plate in this order, then pressing, punching, and inserting them into a negative electrode can.
CONSTITUTION: An aluminum plate and two lithium plates are piled on a polypropylene substrate 11 in the order of one lithium plate 1a, the porous aluminum plate 1b, and the other lithium plate 1a. Next, under this condition the lithium plates is and aluminum plate 1b are pressed by a roller and mounted on the lower mold 13 of a punching mold, and the upper mold 12 of the punching mold is lowered to punch them. Then, they are inserted into a negative electrode can 2 mounted on a base 14. Accordingly, the peeling or displacement between the lithium plates 1a and aluminum plate 1b is prevented, and a lithium secondary battery having high reliability for the charge and discharge cycle life can be obtained.
TANIGUCHI YASUYOSHI
IKENARI SHIGERU
| JPS61208748A | 1986-09-17 | |||
| JPS5375434A | 1978-07-04 |