The Great Wall will mix lemon and DHT. Half-breed? Technology hybrid technology) system is summarized as 1 system, 2 architectures and 3 powertrains.
1 system refers to a set of "seven in one" highly integrated hybrid electric power system. This hybrid assembly integrates 1.5L/ 1.5T hybrid engine, generator/driver dual motors, fixed-axis gearbox, dual-motor controller and integrated DCDC.
After highly integrated design, compared with the traditional fuel system assembly, the system has smaller volume, lighter weight, higher transmission efficiency, higher reliability and better NVH performance, and the thermal efficiency of the power system reaches 38~50% in the whole scene.
In the transmission mode, the dual-motor series-parallel topology is adopted, which can realize EV drive, series drive, energy recovery, idle stop and other working modes. Through the intelligent switching of different working modes by the control system, the balance between power and fuel consumption in various driving scenarios is realized.
For example, in EV working mode, the wheels are directly driven by the driving motor, which is suitable for low-speed scenes. In series working mode, the engine drives the generator to generate electricity, and the motor directly drives the wheels, which is suitable for urban driving conditions. In parallel working mode, the wheels are directly driven by the engine, and the generator and driving motor are responsible for adjusting the engine working point and auxiliary driving wheels, which is suitable for high-speed driving conditions. In the energy recovery mode, energy is recovered by the drive motor, which is suitable for braking conditions.
Two architectures refer to two power forms that can be applied to HEV and PHEV. HEV and PHEV have the same architecture: it consists of a hybrid special fuel engine, a highly integrated dual-motor hybrid gearbox and an efficient hybrid battery. HEV is equipped with a fully self-developed dual-motor architecture, focusing on the economy in urban use scenarios.
In the actual use scenario, in the low-speed (below 40km/h) mode, EV mode is used to drive; Medium-speed (below 90km/h) mode in urban working conditions, adopting series working mode; When high speed and high power are required, the parallel mode is adopted and the engine is directly driven. The comprehensive efficiency of power system can reach 43-50%, and the comprehensive fuel consumption of A-class SUV can reach 4.6L per 100 kilometers.
PHEV？ There are two-wheel drive economy version and four-wheel drive version, and its biggest feature is that it is equipped with the world's largest power battery with a capacity of 45kWh, which can realize the longest pure electric cruising range of 200km among plug-in and hybrid models in the world.
HEV and PHEV include three powertrains, namely 1.5L hybrid engine +DHT 100, 1.5T hybrid engine +DHT 130, 1.5T hybrid engine+DHT. The total power of the system can cover 140kW to 320kW, which can support the flexible collocation of different vehicles, and the comprehensive thermal efficiency of the three power systems can exceed 50% at the highest.
In the choice of power battery, the battery capacity of HEV is 1.76kWh, and the battery provided by Contemporary Amp Technology Co., Ltd. is adopted. The battery pack of PHEV can reach up to 45kWh and the cruising range of pure electricity can reach 200km.
According to the test data of Great Wall Motor, after the A-class SUV is equipped with HEV, the fuel consumption per 100 kilometers can be reduced to 4.6L, and the 100-kilometer acceleration score of the B-class SUV can reach 7.5 seconds. 2-drive PHEV model, the acceleration of B-class SUV can reach 7.2 seconds, the fuel consumption can be as low as 0.7L per 100 kilometers, and the acceleration of 4-drive version can reach 5.2 seconds per 100 kilometers.
Haval's HEV hybrid architecture is different from Japanese Toyota, Honda and Nissan, bypassing the patent barriers of Japanese car companies in the hybrid field, and combining the motor with the hybrid gearbox to realize the switching of multiple scenes and different working modes, thus achieving the purpose of reducing fuel consumption and improving power. Great Wall Motor will promote lemon platform DHT platform to many of its models in the future, and almost all of Haval's models will be electrified to varying degrees.
This article comes from car home, the author of the car manufacturer, and does not represent car home's position.