While the PSA Group and Renault have set out on modular platforms that can be adapted for both electric and hybrid models, Volkswagen is building new ID.X electric cars and its Enyaq iV code on the same MEB electric platform. Hyundai Motor Group (HMG) will now follow the same route as the E-GMP platform, where new Hyundai, KIA and Genesis electric cars will be built. The Hyundai Ioniq 5 SUV will be the first in five years.
a completely new battery and power battery on wheels
The new platform’s bite is a little surprising full of new battery system. The individual modules do not include wavy lines, but flat lines, which, according to HMG, made it possible to increase the energy storage density in the module and thus reduce the number of dl that the module has includes it. At the same time, the liquid processing plant was cooled, which will have to cope with the high heat that occurs during very fast charging.
The battery modules will be the same for each car and their number installed in the case of the battery, depending on the model configuration, more precisely the required battery capacity. The case is always flat and under the floor of the vehicle, so there should be no compromise in the legroom in the rear seats, as in the case of Kona. Conversely, there will be no central tunnel, the floor will be flat in vehicles. According to HMG representatives, air conditioning and heating technologies have been diversified from the cab to the engine compartment, which also contributes to the higher quality interior space and new interior configuration options for the new models.
An important feature is the high voltage of the 800 V battery, which is twice the standard of most competitors. At a voltage of 800 V, the same power consumption is reduced by a lower current, not by a 400 V system, so conductors with a lower current can be used, depending on the pressure.
In practice, this will mean that on properly configured chargers, new cars will charge at high power even without a liquid-cooled cable (ie, for example, on some configured hyperchargers to 75 kW for existing 400V vehicles, you charge a full 150 kW on E-GMP, only Porsche Taycan can) and high performance chargers will handle some configurations and charge 240 kW. In 5 minutes, add the energy to 100 kilometers and add 80 percent of the battery in less than 20 minutes.
The onboard AC charger will be heavy and special power and 11 kW, which is a good standard today. However, the interesting thing is that the inverter is also used to control the flow of energy, the so-called V2L mode (vehicle for loading). The vehicle can also be used as an energy source, for example in a cottage or campsite, or another vehicle can recharge in an emergency. In this way, it can deliver 3.5 kW at 230 V, three times what the Honda E has today, and side input in other vehicles.
Robust chassis and fast engine
The advantage of a special electric vehicle platform is, in particular, that it does not have to consider the needs of a much larger and heavier combustion engine. The processing plant is completely disfigured, the connections are also maintained in the city, where it would not be possible with a conventional drive. The passenger compartment should be extremely durable, also because the chassis has several elements made of very high strength steel, which must also protect the traction battery in the event of an accident.
The platform can have a maximum engine power of 600 kW and a top speed of 260 km / h, so using only the five-element rear wheel suspension and the newly developed Integrated Drive Axis, an integrated drive axle with wheel bearings. High maximum speeds are achieved here with the help of a high-speed electric motor (motor speeds are 70 percent higher than that of its predecessors), using a standard one-speed fixed gearbox (for fixed speed reduction).
The concept requires a pair of electric motors, in which one, all-wheel drive will be available at any time, but the system will be able to mechanically disconnect the front engine, and the car will create a rear wheel.
The motor itself has a reworked stator where the conductors do not have a round, but it swells (almost square) over which increases the efficiency of the electric motor. The cooling system, which provided the liquid (water) circuit in previous generations, is now oil, and in addition to cooling, it also provides lubrication. The motor is integrated in one block with a gearbox and an electric transformer.
The first vehicles on the E-GMP platform should arrive in Europe in the second quarter of five years.