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Closer Look: Hyundai's Dedicated EV Platform

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Jan. 7, 2021—Hyundai will put its EV eggs into one platform, so to speak, by developing an electric car propulsion system that can serve as the foundation for multiple models.

The company announced the E-GMP platform on Dec. 1. The moniker stands for “Electric-Global Modular Platform” and will debut on its first production model, the Ioniq 5, in 2021.

The use of a versatile platform is similar to the approach of General Motors, which has its Ultium Drive platform that features multiple motor configurations. 

The idea is to have one proprietary drivetrain platform that can support multiple models and performance needs, and Hyundai says it has that in its E-GMP. Let’s take a closer look at the platform.


The Drivetrain

One feature to note at the top is that E-GMP is a rear-wheel-drive platform. In a press release, the company said that they see that as a more versatile setup.

“Today our front-wheel driven Hyundai and Kia BEVs are already among the most efficient ones in their segments,” said Albert Biermann, President and Head of R&D Division for Hyundai Motor Group in the release. “With our rear-wheel driven based E-GMP, we are extending our technological leadership into segments where customers demand excellent driving dynamics and outstanding efficiency.”

But it’s not limited to just RWD. Customers will have all-wheel-drive options that will require an additional motor up front. The company says that 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.”

Hyundai says its E-GMP platform has a 500km (310 miles) range potential and a 0-60 mph time of roughly 3.5 seconds.

The drivetrain is supported by a five-link rear suspension system, and it features an integrated drive axle (IDA). The IDA combines wheel bearings with the drive shaft to transmit power, according to Hyundai.


Battery Setup

Hyundai says that its system is set up for high-speed stability and good cornering performance due to its even weight distribution. 

The battery pack is housed in ultra high-strength steel and hot-stamped steel, and it sits between the front and rear axles. It sports a separate cooling block structure.

One interesting feature of the battery plant is that it has bidirectional charging capabilities. Hyundai says that its integrated charging control unit enables a “vehicle-to-load” function, which can discharge energy from the battery. This allows it to operate other electrical items or even charge another EV.

The vehicle-to-load system can supply up to 3.5 kW of power.


Hyundai’s Plans

The Ioniq 5 is just the beginning for Hyundai, which plans to introduce 23 battery-electric models by 2025. The company wants to sell 1 million EVs by that date as well.

They will all run on the E-GMP.

“E-GMP is the culmination of years of research and development and brings together our most cutting-edge technologies,” said Fayez Abdul Rahman, senior vice president of the Vehicle Architecture Development Center for Hyundai Motor Group in a press release. “Our BEV line-up will evolve and be strengthened by this innovative new platform.”

Sibling company Kia has plans to increase its EV sales to 20 percent of overall sales by 2025, and seven dedicated models are to be released by 2027.


Image: Hyundai

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