Berlin-based engineering services provider IAV showcased a modular platform for battery-electric vehicles that supports construction from small cars to light commercial vehicles. The electric modular system is supposed to make the development of BEVs “faster, cheaper and more sustainable”.

The platform developed by the Berlin-based company covers a power range of 100 to 440 kW, battery capacities from 27 to 115 kWh and voltage levels of 400 and 800 volts. It also allows the use of both silicon (Si) and silicon carbide (SiC) in power electronics. According to IAV, the flat electric train platform will offer a wide range of variants for all vehicle segments and their drive topologies. As an example, the company cites the choice between front, rear or all-wheel drive and optional additional functions such as torque vectoring to increase driving dynamics.

In total, IAV claims to have virtually generated and evaluated around 24 million technically feasible powertrain variants. Depending on the company headquarters, simulation tools were used to systematically vary and combine the main battery, electric motor, inverter and transmission systems. The result: “With the modular E-kit, we cover the needs of the entire fleet that we have defined. We can also vary from a low cost solution to a high performance version in vehicle classes, for example in the SUV ”, explains Rene Kockisch, Team Leader System Development Mechanics at IAV.

In the following video, IAV specifically shows five types of platform: A 400-volt front-wheel drive variant for small cars with a battery capacity of 27 to 42 kWh, an output of 100 to 130 kW, and 2,000 to 2,800 Nm. The next larger platform with 400 or 800 volts and rear or all-wheel drive, offering 42 to 70 kWh, 100 to 300 kW and 2,800 to 5,600 Nm. Another mid-sized platform – also with 400 or 800 volts and rear or all-wheel drive, but with a battery capacity of 62 to 70 kWh, 130 to 370 kW and 2,800 to 6,950 Nm.

These are joined by two larger 800-volt variants of the platform, each with 70 to 115 kWh. While the former comes in the form of an all-wheel drive or rear-wheel drive model of 150 to 440 kW and 3,500 to 8,300 Nm, the latter is designed as an all-wheel drive or front-drive model of 150 to 300 kW and 3,500 to 6,950 kW.

In addition to flexibility, IAV’s EV platform would be particularly convincing in terms of durability. The Berlin-based company claims to have developed a special eco-design based on a life cycle analysis for battery selection, in particular an “extremely resource-efficient solution which contributes to the fact that less CO2 is emitted in the production of batteries thanks to to a better selection of materials, connection, disassembly and recycling technology than in the production of conventional accumulators ”.

Erik Schneider, Head of Electric Traction and Hybrid Drivetrain at IAV, describes platforms as the key to mastering the diversity of variants and reducing development time and, in particular, product costs through cost savings. ladder. In addition, “Affordability and sustainability are two of the biggest challenges of electric mobility. The consistent implementation of eco-design platforms can make electric mobility more affordable and sustainable.

IAV is already using the electrical transmission platform in various projects with customers requiring subsystems or complete electrical transmission solutions. The company employs more than 8,000 people worldwide and counts among its customers, according to its own statements, “all renowned automobile manufacturers and suppliers”. In addition to the traditional development of vehicles and powertrains, IAV has now established a broad base in the fields of electromobility and autonomous driving. In addition to its development centers in Berlin, Gifhorn and Chemnitz / Stollberg, IAV has other sites in Germany, including Munich, Sindelfingen and Ingolstadt. It was only recently that the service provider announced its intention to build a new development center near Stuttgart.

iav.com