CPC H01M 50/609 (2021.01) [H01M 10/38 (2013.01); H01M 50/60 (2021.01); Y02E 60/10 (2013.01); Y02P 70/50 (2015.11)] | 15 Claims |
1. A liquid injection device for injection of electrolytic solution into a bag-shaped film exterior containing a generation element, the liquid injection device comprising:
a nozzle structured such that the electrolytic solution is injected into the bag-shaped film exterior through the nozzle; and
a first seal mechanism including a pair of elastic bodies structured to press the bag-shaped film exterior with the nozzle which is configured to be inserted in the bag-shaped film exterior, and thereby establish sealing around the nozzle;
wherein:
the nozzle includes an outer circumferential nozzle-shaped tubular and structured such that the first seal mechanism establishes sealing around the outer circumferential nozzle inserted into the bag-shaped film exterior, and includes an inner circumferential nozzle shaped tubular and structured expandable telescopically through the outer circumferential nozzle;
the outer circumferential nozzle and the inner circumferential nozzle form therebetween an electrolytic solution passage structured such that the electrolytic solution flows through the electrolytic solution passage;
the inner circumferential nozzle forms therein a decompression passage structured such that gas inside the bag-shaped film exterior is evacuated through the decompression passage;
the outer circumferential nozzle includes a liquid injection port, and the inner circumferential nozzle includes a suction port; and
in a state that the inner circumferential nozzle is expanded telescopically through the outer circumferential nozzle inside of the bag-shaped film exterior, the suction port opens at a position protuberant with respect to the liquid injection port in an axial direction of the outer circumferential nozzle.
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