Method for preparing a hydrogen tank including at least one sealing layer of a composition including at least one polyamide P1, and at least one base in order to provide the tank with at least one opening, wherein the method includes: providing of at least one base, the at least one base being covered by at least one layer of a composition including at least one adhesion primer; preparing the at least one sealing layer; fastening the at least one base to the at least one sealing layer.

A composite pressure vessel assembly includes a plurality of lobes, each of the lobes having at least one interior wall and at least one curved wall, the plurality of lobes being positioned in a side by side arrangement and extending in a longitudinal direction from a first end to a second end. Also included is a plurality of end caps disposed at the ends of the lobes, wherein the plurality of lobes and end caps are formed of at least one fiber-reinforced polymer. A method of manufacturing a composite pressure vessel assembly is provided. The method includes forming a plurality of lobes consisting of at least one fiber-reinforced polymer. The method also includes forming a main body with the plurality of lobes, the lobes disposed in a side by side arrangement.

This high-pressure tank includes a resin liner constituting a hollow fluid filling part, a ferrule including a supply/discharge port which communicates with an internal space of the liner and a flange part which protrudes outward in a radial direction from a circumferential region of the supply/discharge port and abuts on the liner, and a reinforcing layer made of a fiber reinforced resin attached to cover across the liner and an outer circumferential surface of the flange part, in which a discharge hole allowing a gap between abutting surfaces of the flange part and the liner to communicate with an inside of the supply/discharge port and discharging a fluid accumulated between the liner and the reinforcing layer to the supply/discharge port is provided in the ferrule, and a trap groove surrounding a circumferential region of the discharge hole is provided on at least any one of the abutting surface on the flange part side and the abutting surface on the liner side.

A pressure vessel, in particular a cryogenic pressure vessel, has an inner vessel, an outer vessel and a chamber that can be evacuated at least partly. A motor vehicle includes such a pressure vessel.

A method of manufacturing a high-pressure composite pressure vessel for high-pressure being at or above 70 bar (1000 PSI or 7 MPa) includes providing an expandable core vessel defining a hoop section between end domes. An aligned discontinuous fiber composite material is wrapped over the expandable core vessel aligning with a plurality of load paths present in the expandable core vessel being over the hoop section and end domes. The aligned discontinuous fiber composite material has fibers in a prepreg tape that are at least 5 mm in length to 100 mm in length or less. Next, a continuous fiber-reinforced composite is wrapped over the aligned discontinuous fiber-reinforced composite along the hoop section and not wrapped along the end domes. The expandable core vessel may be pressurized and heated to consolidate the composite overwrap. Finally, the vessel is cooled under pressure resulting in the high-pressure composite pressure vessel.

A container includes one or more hollow shell assemblies, each assembly having a first hollow shell including a first inner surface to cover a portion of a pressure vessel (PV) and a second hollow shell including a second inner surface attachable to the first hollow shell. The first and/or second hollow shells may include a fiber layer that may be at least partially impregnated with resin, and an energy dissipating material that is substantially concentric with the inner surfaces of the respective shells. The first and second hollow shells are attachable to one another to define a volume for at least partially enclosing the PV, and may be overwrapped via filament winding.

A type IV conformable pressure vessel has improved mechanical coupling between an outer composite shell and a boss. The pressure vessel comprises an inner polymeric liner having a flare edge fixedly coupled to the boss. The boss has a bore in fluid communication with an interior of the pressure vessel. In addition, the boss has a shank extending between the liner and the outer composite shell. The shank includes a plurality of spikes projecting radially away from the boss. The outer composite shell of resin and fiber surrounds an outer periphery of the liner and an outer periphery of the shank. The spikes are embedded into the outer composite shell to mechanically fasten the outer composite shell to the boss.

A high pressure tank includes: a container body including dome parts; a reinforcement layer provided on an outer surface of the container body and including fiber-reinforced resin; and a protective member provided on an outer surface of the reinforcement layer, wherein the protective member includes a first layer disposed at the outer surface of the reinforcement layer that covers at least a part of the dome parts, and a second layer disposed outward of the first layer. The first layer is more deformable due to the same load applied from the outside than the second layer is.

The invention relates to a pressurized fluid storage and dispensing assembly (1) for a vehicle, comprising: a plurality of pressurized fluid reservoirs (3), each reservoir (3) comprising a first end piece (13) provided with at least one fluid passage duct configured for dispensing fluid from the reservoir (3) and for filling the reservoir (3), a use collector duct (5) which comprises an opening (19) for supplying and/or dispensing fluid and a plurality of orifices, each orifice being configured to be fluidically connected to a reservoir (3) via its fluid passage duct, and an electrically operated valve (7) which is arranged at one end of the use collector duct (5) and selectively closes or opens the fluid passage through the opening (19).

The invention also relates to a vehicle comprising such a storage and dispensing assembly (1).

Systems and methods for storing materials, such as cryogenic materials, with inner and outer vessels of a storage tank that mutually support each other. An inner vessel may also have a webbing, such as a rope lattice, that provides additional support for the storage tank.