English 
Author: zhang'qiang Publish Time: 2024-03-09 Origin: www.abc.com
With the growing awareness of environmental protection and the booming development of the new energy vehicle market, hybrid powertrain, as an efficient and environmentally friendly power solution, is gradually gaining more and more attention. However, hybrid powertrain is not a single technology route, but contains many different types and configurations. This article will provide you with a detailed introduction to several major types of hybrid power systems to help you better understand the diversity of this field.
I. Series Hybrid Powertrains
The series hybrid system was one of the first forms of hybridization to emerge. It mainly consists of three major power assemblies, namely, engine, generator and electric motor, which are connected in series to form a hybrid powertrain. The engine drives the generator to generate electricity, which is delivered to the battery for storage through the controller, and then delivered by the battery to the electric motor to drive the car. When the power generated by the engine is greater than the power needed by the electric motor, the excess is returned to the battery for charging. The series hybrid system is simple in structure, but the energy conversion efficiency is low, so it is gradually replaced by other more efficient hybrid forms.
Second, parallel hybrid system
The parallel hybrid system is currently the most widely used form of hybrid power. It uses two systems, the engine and the electric motor, to drive the vehicle in a way that superimposes mechanical energy. The engine and electric motor belong to two sets of systems, which can provide torque to the automobile driveline independently, and can be driven separately or jointly under different road conditions. When the car accelerates to climb a hill, the electric motor and the engine can provide power to the drive train at the same time, and when the car is traveling at low or constant speed, the power can be provided by the engine. The parallel hybrid system has the advantages of compact structure and high energy conversion efficiency, so it is widely used in various hybrid models.
Third, hybrid hybrid system
Hybrid hybrid power system combines the characteristics of series and parallel, so that the engine, generator and motor drive the car in various ways, although the structure is more complex, but it can make the engine, generator and motor and other components to carry out more optimized matching, so that the engine working conditions are controlled in the region of optimal comprehensive performance, so as to achieve the purpose of reducing fuel consumption and emissions. Hybrid hybrid system has higher energy utilization efficiency and superior driving performance, which is an important direction for the development of future hybrid technology.
Fourth, plug-in hybrid system
Plug-in hybrid system is a special type of hybrid power system, which can charge the battery through external power supply. This system combines the advantages of pure electric vehicles and hybrid vehicles, which can not only rely on electric power to realize zero emission when driving for a short distance, but also can use the fuel engine to provide power when driving for a long distance. Plug-in hybrid systems have higher energy efficiency and longer range, and are an important development direction for the future new energy vehicle market.
V. Summary
As an important technology route in the field of new energy vehicles, hybrid power systems have many different types and configurations. From the earliest series hybrid system to today's parallel, hybrid and plug-in hybrid systems, each type has its unique characteristics and advantages. As the technology continues to advance and the market continues to expand, we can expect hybrid systems to enable a more efficient, environmentally friendly and intelligent mobility experience in the future.
