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Are electric vehicles and new energy vehicles the same concept?
Definition of 1. Electric Vehicle
According to the national standard "GB/T 19596 Electric Vehicle Terminology", electric vehicles refer to the general term of hybrid vehicles, pure electric vehicles and fuel cell vehicles.
Are electric vehicles and new energy vehicles the same concept?
The "Energy-saving and New Energy Vehicle Industry Development Plan (2012-2020)" issued by the State Council clearly states that new energy vehicles mainly refer to plug-in hybrid vehicles, pure electric vehicles and fuel cell vehicles.
Electric Vehicles> New Energy Vehicles
In addition to being divided according to the degree of gasoline-electric mixing, electric vehicles can also be divided into three types: series, parallel and hybrid hybrid vehicles according to the structure of the power system.
1. Series Hybrid Electric Vehicle (SHEV):
Engine power must be transmitted to the wheels through an electric motor.
Features:
(1) The vehicle is completely driven by an electric motor, and the engine is only responsible for generating electricity;
(2) the structure is simple;
(3) The engine and the motor are controlled separately, and the control is simple;
(4) The vehicle accelerates evenly and smoothly.
2. Parallel Hybrid Electric Vehicle (PHEV):
Both engine and motor torque can be directly transmitted to the wheels.
Features:
(1) The engine power transmission efficiency is high;
(2) The motor power is small, and the whole vehicle only needs one motor, which is low in cost;
(3) Variable degree of power mixing;
(4) A gearbox must be used.
3. Hybrid Hybrid Electric Vehicle (PSHEV):
It can not only realize the separate control of the engine and the motor, and the vehicle is driven by the motor, but also realize the joint drive of the engine and the motor.
Features:
(1) the advantages of both series structure and parallel structure;
(2) Complex structure and control, high structural cost.
Introduction to 2. Common Electric Vehicle Types
1. Weak hybrid car
(1) Increase idle start-stop function on the basis of traditional cars
(2) The fuel saving rate is about 5%-8%
(3) Cost increase of about 1000-3000 yuan
Weak hybrid vehicles mainly have two types of three configurations: STT motor system (enhanced starting motor system) and BSG motor system (12V and 48V voltage platforms).
2. Medium mix car
(1) On the basis of traditional cars, add idling start-stop, acceleration assistance, braking energy recovery and driving (cruise) charging functions
(2) The fuel saving rate is about 20%-30%
(3) Cost increase of about 1-30000 yuan
There is only one configuration of the mid-hybrid power system, that is, a single-motor single-clutch parallel system.
3. Strong mix car
(1) On the basis of traditional cars, add idling start-stop, acceleration assistance, braking energy recovery, driving (cruise) charging and low-speed pure electric driving functions
(2) The fuel saving rate is about 30%-50%
(3) Cost increase of about 3-70000 yuan
4. Plug-in hybrid electric vehicle
(1) On the basis of traditional cars, add idling start-stop, acceleration assistance, braking energy recovery, driving (cruise) charging and high-speed pure electric driving functions
(2) The fuel saving rate is about 50%-70%
(3) Cost increase of about 5-100000 yuan
(4) The power system configuration is the same as that of the strong hybrid.
5. Pure electric vehicle
Compared with traditional cars, the engine is replaced by a motor, the fuel tank is replaced by a battery, and the transmission is replaced by a single-stage or two-stage reducer. The cost of the vehicle is increased by about 8-150000 yuan.
Pure electric vehicles have the following advantages:
(1) The power system has a simpler structure and higher reliability;
(2) NVH performance unmatched by traditional cars;
(3) zero emissions without pollution;
(4) The cost of use is reduced by about 60%-80%;
3. electric vehicle core components
The key systems and components of electric vehicles are mainly "three big and three small".
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