| 摘要 |
PROBLEM TO BE SOLVED: To prevent generation of defects peculiar to a battery attendant on making the shape thin in the secondary battery capable of storing large capacity as the coin type battery used as the power source of various small appliances. SOLUTION: A coin type lithium secondary battery has a cylindrical stainless steel positive electrode can 5 having prescribed thickness, hardness, height, and diameter, a positive electrode current collector 6, a negative electrode can 7 having prescribed thickness, hardness, a negative electrode current collector 8 welded to the inner surface of the negative electrode can 7, and a circular gasket 9. A negative electrode 2 and the negative electrode current collector 8 are housed in the negative electrode can 7 to which the circular gasket 9 is fit, a separator 3 is placed on the negative electrode 2, the prescribed amount of an organic electrolyte is poured, a positive electrode 1 is placed, and the positive can 5 fixed with the positive electrode current collector 6 is fit, then the positive electrode can 5 is sealed with a press die. |
