New Hyundai EV platform brings 800V charging, 310-mile range

The next generation of electric cars from the Hyundai Motor Group (HMG) will sit atop the new Electric-Global Modular Platform (E-GMP) architecture, beginning with the boldly styled Hyundai Ioniq 5 crossover in 2021.

The manufacturers’ first bespoke battery-electric vehicle architecture will go on to underpin cars of varying sizes from Hyundai, Kia and Genesis, ranging from hatchbacks to full-size SUVs, as part of the group’s strategy to introduce 23 full EVs by 2025.

Cars based on the E-GMP platform will offer a maximum range of more than 310 miles per charge, with standard high-speed 800V charging capability – so far only available on the Porsche Taycan – allowing an 80% charge in as little as 18 minutes from a 350kW rapid charger. 

With lower-capacity 50-150kWh chargers currently more readily accessible, the platform’s “multi-charging” system is also compatible with 400V infrastructure, courtesy of “world’s first” patented inverter technology that adjusts charging capacity.

HMG has also done away with the conventional on-board charger that features in its current crop of electric cars for a new Integrated Charging Control Unit (ICCU) that allows electricity to flow in both directions, allowing the E-GMP platform to be used as a power source for external electric machinery – including other electric cars. This new “vehicle-to-load” (V2L) function can supply up to 3.5kW of power. 

The energy density of the batteries is said to be around 10% higher than those currently on sale, meaning they weigh less and can be mounted lower down in the chassis. Hyundai claims this is partly a result of a more compact cooling system, which uses oil rather than water. 

The E-GMP is claimed to have been “engineered to offer improved cornering performance and driving stability at high speed”. The battery pack is positioned close to the ground for a low centre of gravity, while five-link rear suspension – as featured on the new Mercedes-Benz S-Class and Rolls-Royce Ghost – combines with an innovative ‘integrated drive axle’ for enhanced ride comfort and stability.

The powertrain itself comprises a “powerful” motor of undisclosed size, a single-speed transmission and an inverter, all housed in one module. The motor, despite being more compact than the brand’s existing units, is claimed to have a 70% higher maximum speed.

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