Hyundai Motor Group to lead charge into electric era with dedicated EV Platform ‘E-GMP’
Maximising development flexibility through modularisation and standardisation.
E-GMP reduces complexity through modularisation and standardisation, allowing rapid and flexible development of products which can be used across most vehicle segments, such as sedans, SUVs and CUVs. Moreover, flexible development can satisfy various customer needs for vehicle performance. Among these, a high performance model will accelerate from 0 to 100kph in less than 3.5 seconds and achieve a maximum speed of 260km/h.
E-GMP will be highly effective in expanding the Group’s EV leadership position as it will enable the company to enlarge its EV line-up over a relatively short period through modularisation and standardisation.
Designed for driving performance, safety and maximised space.
E-GMP is engineered to offer improved cornering performance and driving stability at high speed. This is due to optimal weight distribution between front and rear, a design which enables a low centre of gravity thanks to its low-mounted battery pack, and the adoption of electric motors located in the space previously occupied by an engine.
The high-speed electric motor raises the driving performance of E-GMP vehicles. A five-link rear suspension system, which is typically used for mid and large sized vehicle segments, and the world’s first integrated drive axle (IDA), which combines wheel bearings with the drive shaft to transmit power to the wheels, enhance ride comfort and handling stability.
The platform secures battery safety through a battery support structure made of ultra-high strength steel. Hot-stamped steel components surround this structure for additional rigidity. Collision energy can be absorbed efficiently thanks to energy-absorbent sections of the body and chassis, effective energy load paths, and a central section of the battery pack tightly bound to the vehicle body.
Moreover, by strengthening the structure of the load support section, located in front of the dashboard, engineers have been able to minimise collision energy to the power electric system and battery. The A-pillar’s load distribution structure also prevents deformation of the passenger cell.
E-GMP maximises interior space through its long wheelbase, short front and rear overhangs and slim cockpit module. With the battery pack mounted beneath the floor, the E-GMP creates a flat floor for the cabin. This provides more legroom for passengers, while enabling various arrangements for the front and rear seats.
The battery pack itself - mounted between the front and rear wheel axles - will be the most power-dense system that Hyundai Motor Group has ever created. This is partly thanks to its enhanced cooling performance, a result of a new separate cooling block structure which helps make the battery pack more compact. With energy density enhanced by around 10% compared to existing EV battery technology, the battery packs are lighter, can be mounted lower in the body, and liberate more cabin space.
Efficient and powerful electrification system.
The E-GMP’s compact new power electric (PE) system consists of a powerful motor, EV transmission and inverter. These three components are integrated into a single compact module. This ensures powerful performance by raising the motor’s maximum speed by up to 70% compared to existing motors. The high-speed motor is smaller than other motors while providing comparable performance, and it gives efficiencies in both space and weight.
Additionally, a standardised battery system can be tuned to offer performance appropriate for a specific vehicle segment, to maximise driving range, or to meet various customer needs.
The motor is controlled by the inverter power module, which adopts silicon carbide (SiC) semiconductors. This motor can enhance system efficiency by around 2-3 percent, which means the vehicle can be driven for approximately 5% longer on the same battery energy.
E-GMP relies on the rear wheel for propulsion. Customers will be able to choose between rear-wheel and all-wheel drive configurations; models with the latter can be equipped with an additional motor. The all-wheel drive system includes an EV transmission disconnector, which can control the connection between the additional motor and front wheels, and switch between two-wheel and all-wheel drive modes to enhance efficiency by offering the ideal level of power or performance for current driving conditions.
All vehicles developed with the E-GMP platform use a standardised single type of battery module. This module is composed of pouch-type standard cells and can be packed in different quantities as required for each vehicle.