New Hydrogen Storage Technology
Munich. BMW has introduced a cutting-edge hydrogen tank technology for its iX5 Hydrogen model. This system enables a maximum range of up to 750 km (approximately 385 miles). The new BMW Hydrogen Flat Storage system utilises space efficiently, ensuring compatibility with the Gen6 high-voltage battery, thus preserving cabin space. Consequently, vehicles equipped with fuel cell technology can be manufactured on the same production line as their conventional counterparts. The 700 bar high-pressure hydrogen tanks are designed to benefit from mechanical protection offered by the vehicle’s structure, enhancing safety.
Optimised Design for Enhanced Performance
The innovative flat tank system comprises seven high-pressure tanks constructed from carbon-fibre reinforced composite. These tanks are interconnected in parallel and housed within a robust metal frame. Rather than relying on individual pressure vessels, this design integrates multiple chambers into a single enclosed unit, managed by a central valve. This configuration allows the BMW iX5 Hydrogen to achieve a greater range, with several patent applications already submitted by BMW regarding this development. The system can store at least seven kilograms of hydrogen and can be refuelled from empty in under five minutes, maintaining BMW’s standards for safe and efficient refuelling.
A New Era of Driving Pleasure
The BMW Hydrogen Flat Storage technology is integral to the powertrain, working in conjunction with the fuel cell system and an innovative high-voltage battery to deliver the driving experience synonymous with BMW. The iX5 Hydrogen incorporates the latest Heart of Joy drivetrain and chassis control software alongside BMW Dynamic Performance Control. Notably, it features state-of-the-art Gen3 fuel cell technology, which surpasses previous generations in efficiency and power output.
Flexible Production Capabilities
The adaptable architecture of the new BMW X5 allows for five different drive system variants to be produced, catering to diverse customer needs—from battery-electric systems and plug-in hybrids to conventional and hydrogen fuel cell technologies. This flexible production model enhances efficiency by optimising synergies in manufacturing. Uniform geometrical specifications for energy storage systems and drive components reduce complexity and costs, while also ensuring robust manufacturing processes. This strategic design paves the way for the broader introduction of the BMW iX5 Hydrogen into the company’s production network by 2028.
Strategic Vision for Hydrogen
The BMW Group’s commitment to a technology-open approach continues to be a cornerstone of its strategy. By incorporating fuel cell technology into the new X5 series, BMW is broadening its production lineup and providing customers with the benefits of hydrogen-powered vehicles. This approach not only supports electric driving with extended ranges and rapid refuelling but also diversifies energy sources, reducing reliance on single infrastructures or raw material supply chains.
The development of the powertrain and tank system for the BMW iX5 Hydrogen is supported by the “HyPowerDrive” project, funded by the Federal Ministry of Transport (BMV) as part of the IPCEI Hy2Move initiative. The federal government is providing funding of EUR 191 million, complemented by an additional EUR 82 million from the state of Bavaria. Project Management Jülich (PtJ) oversees funding implementation in coordination with NOW GmbH.
© BMW Group
