| 摘要 |
PROBLEM TO BE SOLVED: To provide a lithium battery manufacturing method capable of improving safety and productivity while achieving good long-term storage performance.SOLUTION: The method includes: steps (s1-s6) of housing a positive electrode mixture 3, a negative electrode lithium 4 and an electrolyte in a bottomed battery can 2 having a positive electrode terminal part 11; sealing steps (s7-s11) of fitting a sealing body 9 including the negative electrode terminal part 7 with an opening of the battery can via a gasket 10; and a preliminary discharge step (s12) after the sealing step. Among respective execution periods of plural steps included in the sealing step, and a battery can conveying period during steps before and after the plural steps, within two predetermined periods, advance discharging steps (s7b-s11b) of short-circuiting between the battery can and the sealing body are executed. In the preliminary discharge step, a predetermined load is connected between the positive electrode terminal part and the negative electrode terminal part for a predetermined time, and discharging is done so that a total discharge capacity of a gross discharge capacity in the advance discharging step becomes a predetermined ratio of capacity to the theoretical capacity. |
