US 11,799,178 B2
Liquid injection device
Koichi Takata, Zama (JP)
Assigned to AESC Japan Ltd., Kanagawa (JP)
Appl. No. 16/644,716
Filed by AESC Japan Ltd., Kanagawa (JP)
PCT Filed Sep. 15, 2017, PCT No. PCT/JP2017/033394
§ 371(c)(1), (2) Date Mar. 5, 2020,
PCT Pub. No. WO2019/053867, PCT Pub. Date Mar. 21, 2019.
Prior Publication US 2020/0287198 A1, Sep. 10, 2020
Int. Cl. H01M 50/609 (2021.01); H01M 50/60 (2021.01); H01M 10/38 (2006.01)
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
OG exemplary drawing
 
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.