US 12,145,306 B2
Manufacturing method for high-pressure tank and manufacturing jig for high-pressure tank
Kosuke Tatsushima, Wako (JP); and Toru Koseki, Wako (JP)
Assigned to Honda Motor Co., Ltd., Tokyo (JP)
Filed by HONDA MOTOR CO., LTD., Tokyo (JP)
Filed on Feb. 23, 2022, as Appl. No. 17/678,993.
Claims priority of application No. 2021-059607 (JP), filed on Mar. 31, 2021.
Prior Publication US 2022/0314526 A1, Oct. 6, 2022
Int. Cl. B29C 53/60 (2006.01); B29C 53/80 (2006.01); B29C 63/34 (2006.01); B29L 31/00 (2006.01)
CPC B29C 53/602 (2013.01) [B29C 53/8008 (2013.01); B29C 63/341 (2013.01); B29C 63/346 (2013.01); B29L 2031/7156 (2013.01)] 5 Claims
OG exemplary drawing
 
1. A manufacturing method for a high-pressure tank including a liner having a filling space therein, and a reinforcing layer provided on an outer peripheral portion of the liner, the method comprising:
a step of inserting a reinforcing shaft through a first end portion and a second end portion of the liner, fixing the reinforcing shaft to the liner, and fixing a length of the liner in an axial direction with the reinforcing shaft;
a filament winding step of winding a fiber-reinforced resin around the outer peripheral portion of the liner while keeping an interior of the liner pressurized;
a step of releasing a fixed state between the reinforcing shaft and at least one of the first end portion or the second end portion of the liner, thereby allowing the liner to be deformed in the axial direction; and
a thermal curing step of heating the fiber-reinforced resin, in a state, in which the fixed state between the reinforcing shaft and the second end portion of the liner is released, and forming the reinforcing layer on the outer peripheral portion of the liner.