Hyundai Motor Group introduced that 20021year will be the first year for them to realize the leap of electric vehicles, and its plan is to launch Hyundai Motor one after another. IONIQ 5 "and Kia" CV "(project name) are two new electric vehicles.
Among them, in August 2020, Hyundai Motor has launched the pure electric vehicle brand "IONIQ Ainikun", and plans to take the lead in carrying a special platform for electric vehicles. From next year to 2024, it will be the first to launch the product lineup of three special models for electric vehicles: compact CUV, medium-sized car and large SUV.
At the same time, Kia Motors is gradually implementing the medium and long-term development strategy "Plan? S "is committed to the innovation, transformation and upgrading of mobile travel and electric vehicle business system.
Kia Motors announced in September 2020 that it plans to increase the proportion of electric vehicle sales to 20% by 2025, and released schematic diagrams of seven models, including CV and high-performance models that Kia Motors plans to launch one after another by 2027.
According to the overall planning of Hyundai Motor Group, among the 44 electric vehicles to be launched before 2025, there are 23 electric vehicles, including 1 1 special vehicles for electric vehicles; At the same time, the Group plans to achieve the goal of annual sales of 6.5438+0 million vehicles in the global market and become a veritable global leader in electric vehicles.
So, what is the core competitiveness of Hyundai and Kia electric vehicles in the future? Let's have a look.
Modularization/standardization
E-GMP platform introduces the concepts of modularization and standardization, and reduces the complexity of R&D at the product planning stage, thus realizing cross-vehicle and cross-level flexible product development. Therefore, the E-GMP platform can realize the research and development from cars, CUVs and SUVs to high-performance and energy-efficient vehicles. With the help of E-GMP platform, we can quickly launch various models to meet the diverse needs of customers.
In view of customers' demand for fast acceleration and strong handling of electric vehicles, Hyundai Motor can build a high-performance model with an acceleration time of less than 3.5 seconds per 100 kilometers and a top speed of 260km/h through the E-GMP platform.
In the traditional internal combustion engine car, the engine occupies a lot of space. In the E-GMP platform, the lightweight drive motor is installed in the original engine installation position, and the battery is installed in the lower center of the car body, which realizes the low center of gravity design and the reasonable distribution of the front and rear weight of the car body, and creates excellent turning performance and stable high-speed driving performance.
In addition, the E-GMP platform is equipped with a high-speed motor, which greatly improves the driving performance; It is also equipped with a 5-link rear suspension, which is mainly suitable for medium and large vehicles, to optimize the ride feeling and handling performance.
Security guard? /? Space utilization ratio
From the battery and motor to the body and chassis structure, the E-GMP platform has realized the optimal design for the characteristics of electric vehicles, and at the same time, it is equipped with many new technologies to ensure the safety of passengers and batteries.
First of all, the impact energy buffer zone in front of the vehicle will guide the deformation of all frame structures such as the body and chassis, thus absorbing energy and alleviating the impact force; In the load-bearing support area in front of the instrument panel, a hedge structure is adopted to minimize the impact of PE module and high-voltage battery. In addition, the high-voltage battery protection zone at the lower end of the car body adopts ultra-high tension steel to ensure the safety during collision.
As a passenger protection area, A-pillar load-bearing decentralized structure is adopted to prevent deformation. A large number of hot stamping accessories are used in the front and periphery of the battery; The middle part of the battery box is also firmly connected with the car body, and the overall structural design can effectively buffer the impact force.
E-GMP platform has created the most innovative design and spatial performance suitable for future electric mobile travel. Shorten the front and rear suspension (the distance from the rear of the car to the center of the wheel) and lengthen the wheelbase (the distance from the front wheel to the rear wheel axle) to realize the personalized design style; The stretched cockpit design (dashboard accessory module in the driver's seat) expands the seating space. At the same time, this long wheelbase design helps to improve the riding feeling and driving safety.
The platform also cancels the ground intermediate passage necessary for the internal combustion engine platform, and the battery is installed under the center of the car body, which makes the ground inside the car more flat and optimizes the space inside the car to the extreme. At the same time, the rear passengers have more spacious seating space, and customers can also create various styles of front and rear seat configurations according to different models.
Transmission system
The E-GMP platform is equipped with a new PE system (Power? Electric? System), covering the newly developed motors, reducers, inverters and batteries for a new generation of electric vehicles.
In order to ensure the spacious interior space and reduce the weight of the car body, the PE system of E-GMP platform reduces the overall volume and weight, reduces the loss of energy transfer between parts, and maximizes performance and efficiency. At the same time, 800V high voltage system is adopted, which greatly shortens the charging time.
First, a motor for driving, a reducer for converting power into torque and speed required by a vehicle, and an inverter for controlling the torque of the motor by converting electric power are integrated. In addition, the maximum speed of the motor is increased by 30~70%, and the reduction ratio is increased by 33%. Efficiency optimization is achieved by reducing motor size and lightweight design.
At the same time, the E-GMP platform also adopts a standardized battery system that is most suitable for special vehicles for electric vehicles, which can be flexibly matched according to vehicle types, driving distances and customer lifestyles.
All vehicles developed based on E-GMP platform will be equipped with the same standardized battery module, which is composed of batteries with the highest standard energy density. On the basis of this standardized module, users can create diversified battery pack composition modes such as basic model and battery life model according to the number of modules.
Silicon carbide (SiC) power semiconductor is used in the inverter power module of the rear wheel motor system, which is more efficient than the existing silicon (Si). The system efficiency can be improved by 2~3%, and the cruising range can be extended by about 5%, that is, it can run for a longer time with the same battery quantity.
E-GMP platform comes standard with rear-wheel drive 2WD mode, and front-wheel motors can be added according to different configurations to realize 4WD drive mode. At the same time, the first "retarder disengager" (EV? Transmission? Isolating switch), which can separate or connect the motor and the drive shaft according to the driving situation. Through this design, the vehicle can freely switch between 2WD and 4WD driving modes, minimizing unnecessary power loss and achieving efficient driving.
Quick charge? /? Multifunctional charging
In order to shorten the charging time, the E-GMP platform is equipped with a 400V/800V multifunctional fast charging system, which can be applied to 800V ultra-high-speed charging system and other charging infrastructure.
At present, the common fast charging infrastructure at home and abroad is mostly 50~ 150kW charger, mainly for electric vehicles equipped with 400V charging system. In recent years, in order to realize fast charging, 350kW ultra-high-speed charging infrastructure is under construction, mainly for electric vehicles equipped with 800V high-voltage charging system.
In order to comply with this trend, in South Korea, Hyundai Motor Group and Korea Road Corporation * * * signed the Agreement on Building Environment-friendly Automobile Charging Infrastructure, and planned to set up 350kWh charging facilities in the service area of South Korea 12 Expressway to speed up the operation of ultra-high-speed charging infrastructure; In the European market where electric vehicles are more developed, Hyundai Motor Group has also made a strategic investment in IONITY, an ultra-high-speed charging infrastructure construction enterprise. At present, IONITY operates 308 ultra-high-speed charging stations all over Europe, including 5 1 under construction. By 2022, it is planned to set up 400 ultra-high-speed charging stations.
E-GMP platform conforms to this trend, and is equipped with 800V high-voltage charging system in the design. Through the ultra-high-speed charging facility, the vehicle can be charged 80% within 14 minutes, and can travel 600 km after being fully charged (NEDC standard working condition). In addition, even if it is only charged for 5 minutes, it can travel about 100km.
At present, most of the fast charging infrastructure widely used in the market is aimed at electric vehicles equipped with 400V charging system. For electric vehicles equipped with 800V high-voltage charging system, in order to use these fast charging infrastructures, other components need to be installed. The E-GMP platform breaks through this limitation, and is equipped with a multifunctional fast charging system without installing other components, which can use ultra-high-speed charging facilities and existing fast charging infrastructure at the same time.
As the world's first patented technology that should be applied to the E-GMP platform, the multifunctional fast charging system makes full use of the driving motor and inverter of the vehicle to boost the 400V voltage provided by the charging infrastructure to the 800V voltage most suitable for the vehicle system, thus achieving stable charging compatibility.
This article comes from car home, the author of the car manufacturer, and does not represent car home's position.