| 摘要 |
PROBLEM TO BE SOLVED: To provide a manufacturing-injection method of a secondary battery of which productivity is superior by means that an electrolytic solution is injected in a short time into the secondary battery of a state without injection of the electrolytic solution, and in which the electrolytic solution is precisely injected. SOLUTION: In the method, an opening of a battery container 1 in which an electrode group of the secondary battery in a state without injection of the electrolytic solution are housed and an electrolytic solution primary storage tank 4 are connected with an elastomer 3. After the pressure is reduced in the battery container 1 via the electrolytic solution primary storage tank 4, the electrolytic solution is injected via a first step in which a piston type valve 5 of the electric solution primary storage tank 4 is closed and the pressure in the battery container 1 is maintained in a state of reduced pressure, a second step in which quantitative amount of the electrolytic solution is supplied into the electrolytic solution primary storage tank 4, a third step in which the piston type valve 5 is opened while applying centrifugal force on the electrolytic solution and in which the electrolytic solution is injected into the battery container, a fourth step in which the pressure in the battery container 1 and in the electric solution primary storage tank 4 is made into an equilibrium state, and a fifth step in which the pressure in the battery container 1 is reduced via the electrolytic solution primary storage tank 4 interior. COPYRIGHT: (C)2007,JPO&INPIT |
