US 12,031,673 B2
Method for manufacturing tank unit
Chiaki Kataoka, Nagakute (JP); and Osamu Sawai, Okazaki (JP)
Assigned to TOYOTA JIDOSHA KABUSHIKI KAISHA, Toyota (JP)
Filed by TOYOTA JIDOSHA KABUSHIKI KAISHA, Toyota (JP)
Filed on Sep. 14, 2022, as Appl. No. 17/931,983.
Claims priority of application No. 2021-163387 (JP), filed on Oct. 4, 2021.
Prior Publication US 2023/0103573 A1, Apr. 6, 2023
Int. Cl. F17C 1/00 (2006.01)
CPC F17C 1/00 (2013.01) [F17C 2201/0109 (2013.01); F17C 2201/035 (2013.01); F17C 2201/056 (2013.01); F17C 2205/0107 (2013.01); F17C 2205/0142 (2013.01); F17C 2209/22 (2013.01); F17C 2221/012 (2013.01); F17C 2223/035 (2013.01); F17C 2270/0178 (2013.01); F17C 2270/0184 (2013.01)] 2 Claims
OG exemplary drawing
 
1. A method for manufacturing a tank unit, comprising:
performing a pressure resistance inspection on each of a plurality of high pressure tanks before connecting the high pressure tanks; and
connecting a gas flow path to the high pressure tanks that have passed the pressure resistance inspection, wherein
each of the high pressure tanks has an opening in a top and a bottom of each of the high pressure tanks,
the opening in the bottom is sealed with a plug and a liquid is injected through the opening in the top into each of the high pressure tanks to perform the pressure resistance inspection,
after the plug is removed and inside of each of the high pressure tanks is dried, an end cap is attached to the opening in the bottom, and
the end cap of each of the high pressure tanks is fitted in a bottom connector to connect the high pressure tanks.