Hyundai Electric Global Modular Platform

Both single motor 2WD (rear axle) and dual motor AWD are supported.[4] The semiconductor power electronics will be silicon carbide-based for the rear (main) motor to minimize conversion losses and to facilitate its use in high-voltage and high-current circuits. The front motor, on vehicles so equipped, will use silicon-based power electronics to reduce costs.[5]

The motor, inverter, and transmission are integrated into a single unit.[5] Hyundai claim the motor is approximately 10% more efficient than a conventional motor due to "hairpin winding technology", allowing the coils to be wound more densely, and more effective cooling.[6]

Hyundai Ioniq 5 charging

The Li-ion batteries are pouch-sized and the battery-pack is designed to be 13 cm (5.1 in) tall.[7] E-GMP vehicles are expected to have a range of at least 500 km (310 mi) under the WLTP test cycle. Vehicles will support 200 kW fast charging; Hyundai claim an 18-minute charge will restore 80% of capacity (80% SOC of 77.4kWh in 18 minutes)[8] and a 5-minute charge will add 100 km (62 mi) of range when using a high-power (800 V/350 kW) DC fast charging supply.[5][8] By standardizing the battery type and size, repairs can be carried out more economically by replacing a single module, rather than the entire battery pack.[6] Hyundai claim that power density has increased by 10% with the E-GMP.[6]

Current (as of 2020) DC fast charging infrastructure usually has a maximum power and voltage of 50–150 kW and 400 V.[6] The electronics support both 400 V and 800 V charging and bi-directional charging (V2L (110/230 V and up to 3,5 kW),[9] V2V and V2G).[7] The platform uses the vehicle's motor/inverter to convert incoming DC current at 400 V to 800 V.[5]

The platform supports a wheelbase exceeding 3,000 mm (118.1 in).[4] E-GMP supports various sizes and configurations of vehicles, including C-segment, E-segment, CUV, sedan, and SUV, including three-row SUVs with seven seats.[10][11] Albert Biermann stated that "existing [derivative] EVs on ICEV platforms will see some expansions into smaller segments",[10] which was clarified to mean that smaller EVs would continue to use a front-wheel-drive platform.[12] The rear suspension uses a five-link arrangement. An integrated drive axle is used, in which the drive shaft and wheel bearings are a single unit; this reduces the number of parts and increases rigidity.[6]

The battery is attached to the full-perimeter frame using eight bolts running completely through the battery for strength. The front and rear crumple zones are designed to absorb and dissipate the energy of a potential impact, and high strength steel is used to protect the battery and passenger compartment.[6]