Pressurised gas tank made of composite material
The composite gas pressure tank design with reinforced fiber assemblies and resin-impregnated layers addresses the mechanical resistance and manufacturing complexity issues of existing tanks, offering enhanced strength and simplified production.
WO2026146109A1PCT designated stage Publication Date: 2026-07-09PLASTIC OMNIUM NEW ENERGIES FRANCE
Patent Information
- Authority / Receiving Office
- WO · WO
- Patent Type
- Applications
- Current Assignee / Owner
- PLASTIC OMNIUM NEW ENERGIES FRANCE
- Filing Date
- 2025-12-26
- Publication Date
- 2026-07-09
AI Technical Summary
Technical Problem
Existing composite pressurized gas tanks for hydrogen vehicles lack sufficient mechanical resistance to internal pressure while being lightweight, and their manufacturing processes are complex.
Method used
A composite gas pressure tank design featuring a plastic casing with a tubular structure reinforced by fiber assemblies and an external polymer layer, enhanced by intermediate and additional reinforcement means, including fiber subsets and resin impregnation, to improve mechanical resistance and simplify manufacturing.
Benefits of technology
The design provides improved mechanical resistance to internal pressure, reduces shear stress, and simplifies the manufacturing process, resulting in a lightweight and efficient gas storage solution.
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Smart Images
Figure EP2025089038_09072026_PF_FP_ABST
Abstract
The invention relates to a pressurised gas tank (2) made of composite material, comprising: - an inner plastics casing (20) comprising a tubular duct (200) passing through an internal volume of the casing, - a tubular structure (1) inserted into the tubular duct, the tubular structure being fixed in a cured resin and comprising a fibre assembly (13) consisting of a plurality of fibre sub-assemblies (131, 132), the fibre assembly having a central part (10) and two end parts (11, 12) positioned on either side of the central part, the fibres of the two end parts being spread out on an outer surface (2000) of the inner plastics casing, - an outer reinforcing casing, - an intermediate reinforcing means (1611, 1612, 1613) that is positioned on and fixed to the fibres of an end part (11, 12) of a fibre sub-assembly (131, 132).
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