Technology-open approach meets the art of engineering: the new hydrogen tank in the BMW iX5 Hydrogen.

Munich. The BMW Group is adopting a new and innovative hydrogen tank technology for the BMW iX5 Hydrogen. The new arrangement and size of the tanks enables a higher range of up to 750 km (up to 385 miles)*. The new BMW Hydrogen Flat Storage system offers the added advantage of making exceptionally efficient use of the space it occupies in the vehicle and is compatible with the Gen6 high-voltage battery, meaning that no room is lost inside the cabin. Models with fuel cell technology can therefore be built on the same production line as those with other drive system types. The 700 bar high-pressure hydrogen tanks additionally benefit from the mechanical protection provided by the vehicle structure, further increasing safety.

“Our new storage concept allows us to fit the hydrogen drive system into the new X5 precisely and in a way that saves space,” says Dr Joachim Post, Member of the Board of Management of BMW AG responsible for Development. “Think of it as installation Tetris: every customer gets the drive system best suited to their needs and a true BMW X5 with no compromises. This is technology openness and the art of engineering just the way we developers love them!”

Smart storage, more range.
The new flat tank system consists of seven high-pressure tanks made of carbon-fibre reinforced composite, which are connected with one another in parallel and integrated into a robust metal frame. What makes the design special is that, instead of individual pressure vessels, there are several chambers connected to form an enclosed unit. This unit is controlled by a central main valve. In this way, the optimised storage concept enables the BMW iX5 Hydrogen to achieve a greater range. This development alone accounts for several patent applications filed by the BMW Group. The system is able to store at least seven kilograms of hydrogen in total and can be filled from empty in under five minutes. As is customary for BMW hydrogen models, refuelling is safe, clean and fast. 

Experience hallmark BMW driving pleasure, refuel faster, drive further.
The BMW Hydrogen Flat Storage technology forms part of the powertrain. It combines with the fuel cell system and an innovative high-voltage battery to deliver the driving pleasure for which BMW is renowned. Here, the new BMW iX5 Hydrogen also benefits from the new Heart of Joy drivetrain and chassis control software, as well as BMW Dynamic Performance Control. It is also equipped with latest-generation Gen3 fuel cell technology, which is more efficient and powerful than any preceding generation. 

Flexible production to meet customer requirements. 
Thanks to the smart and highly flexible architecture of the new BMW X5, five different drive system variants of the model can be built to suit customer requirements: from battery-electric systems and plug-in hybrids through highly efficient conventional drive systems to hydrogen fuel cell technology.
Synergies in production are optimised. Uniform geometrical specifications for energy storage systems and drive components reduce technical complexity and lower production costs. At the same time, the flexible platform increases manufacturing robustness, facilitates the integration of new technologies and maximises scalability. It paves the way for widespread introduction of the BMW iX5 Hydrogen into the BMW Group’s production network in 2028.

BMW Hydrogen strategy 
A technology-open approach and a diverse product portfolio continue to be key success factors for the BMW Group. By integrating fuel cell technology into the new BMW X5 series, the company is strategically expanding its production line-up and making the advantages of hydrogen available to its customers. Hydrogen enables electric driving with a long range and fast refuelling, diversifies energy sources and reduces dependence on a single infrastructure or chain of raw materials.

Through the "HyPowerDrive" project the development of the powertrain and the tank system of the BMW iX5 Hydrogen is funded by the Federal Ministry of Transport (BMV) within the framework of the IPCEI Hy2Move. The federal government is providing funding of EUR 191 million. In addition, the project is (co-)financed by the state of Bavaria with a total of EUR 82 million. The funding is implemented by the Project Management Jülich (PtJ) and coordinated by NOW GmbH.