Rimac Technology showcases innovative batteries and drive systems
The Croatian development service provider Rimac Group wants to be at the cutting edge in the fields of batteries and drives, as well as electronics and control units. At IAA Mobility, the company is now presenting its upcoming products at stand C22 in hall A1.
One of the main focuses at the trade fair is likely to be a new solid-state battery system developed by Rimac Technology in collaboration with ProLogium and the Mitsubishi Chemical Group. What makes this battery innovative is not only the solid-state cell technology itself, but also the housing, which is designed to create a lightweight, safe and energy-dense battery platform. The cells for the solution come from ProLogium and are combined with advanced materials from the Mitsubishi Chemical Group. Rimac does not go into further detail at this point.
The Croatian company is also presenting another battery innovation at their stand: their Evo platform based on new NMC round cells of the 46XX type (46 millimetres in diameter, variable height). The platform is equipped with a next-generation thermoplastic composite battery housing (‘Pentatonic’) developed in collaboration with Kautex Textron. In contrast to the solid-state battery, which Rimac describes as next-gen technology, Evo “represents the immediate future of high-performance battery systems.” The solution combines proven cell chemistry with innovative packaging and thermal management solutions.
Finally, Rimac Technology is presenting a third battery innovation: a platform for hybrid batteries with high energy density – based on either 46XX cells or 2170 cells. Here, too, new features are integrated, such as cell-to-pack architecture and improved safety and thermal management functions.
When it comes to drives, Rimac Technology aims to score points with its Sinteg 300 & 550 electric axles, which are designed for “performance-oriented vehicles in all segments.” As ultra-compact units, they are expected to achieve a power density of over eight kW per kilogram and a torque density of over 90 Newton metres per kilogram. At the heart of the system is a single-magnet drive with a patented ultra-light rotor that is expected to reach up to 25,000 revolutions per minute. Transferred to Rimac’s drive platform, the versatile configurable variants are expected to deliver “between 150 – 360kW and 2500 – 6250Nm to target performance-focused vehicles across all segments.”
Rimac is also presenting an XXL axle with high torque in Munich, which goes by the name of Dual EM EDU 550. The system is currently being validated and is expected to achieve a peak efficiency of over 95 per cent and an axle torque of over 11,000 Nm. There is already a customer (“a global car manufacturer”) for the series version, who will purchase the axle from 2026 onwards. Rimac is talking about a planned series production programme for medium quantities. The corresponding production line is to be put into operation at one of Rimac Technology’s production sites on the outskirts of Zagreb.
In the field of electronics and control units, Rimac is showcasing its portfolio of domain and zone control units in Munich, which are coupled with an NXP processor (S32E2). The Croatian company particularly emphasises its centralised architecture, in which several control units are combined into a domain control unit to reduce complexity, weight and costs. “These next-generation ECUs manage critical functions ranging from torque vectoring and high-voltage battery systems to body and power distribution controls, while ensuring uncompromising safety, scalability, real-time performance and OTA updates,” the company says.
“What we’re showcasing at IAA represents the convergence of breakthrough innovation and production readiness,” commented Nurdin Pitarević, COO of Rimac Technology. “These aren’t simply concept technologies; they’ve been developed to be production-ready solutions that will power hundreds of thousands of vehicles in the coming years.”
Rimac Technology is a wholly owned subsidiary of the Rimac Group, a company founded by CEO Mate Rimac, in which Porsche, Softbank, Investindustrial, Hyundai, Goldman Sachs and other investors hold stakes alongside the founder himself. The Rimac Group also holds a 55 per cent majority stake in Bugatti Rimac (Porsche holds the remaining 45 per cent), which combines the Bugatti and Rimac Automobili car brands with the Nevera electric hypercar. However, there are ambitions to buy out the remaining 45 per cent from Porsche.
Over the past year and a half, Rimac Technology has also entered into partnerships with BMW and Ceer Motors from Saudi Arabia.
This article was first published by Cora Werwitzke for electrive’s German edition.
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