Are electric vehicles and new energy vehicles the same concept?

I. Definition of electric vehicles

According to the national standard GB/T 19596 Term for Electric Vehicles, electric vehicles refer to hybrid electric vehicles, pure electric vehicles and fuel cell vehicles.

Are electric vehicles and new energy vehicles the same concept?

The Energy Conservation and New Energy Vehicle Industry Development Plan (2012-2020) issued by the State Council makes it clear that new energy vehicles mainly refer to plug-in hybrid electric vehicles, pure electric vehicles and fuel cell vehicles.

Electric vehicle > new energy vehicle

In addition to the degree of petrol-electric hybrid, electric vehicles can be divided into three types according to the structure of the power system: series, parallel and hybrid.

1. Tandem Hybrid Electric Vehicle (SHEV) :

Engine power must pass through the motor to the wheels.

Features:

(1) The vehicle is completely driven by the motor, and the engine is only responsible for generating electricity;

(2) Simple structure;

(3) The engine and motor are controlled separately and the control is simple;

(4) Uniform and stable acceleration of the vehicle.

2. Parallel hybrid electric vehicle (PHEV) :

Both engine and motor torque can be transmitted directly to the wheels.

Features:

(1) High engine power transmission efficiency;

(2) The motor is of small power, and the vehicle only needs one motor, which is of low cost;

(3) The degree of power mixture is variable;

(4) Gearbox must be used.

3. Hybrid Hybrid Electric vehicle (PSHEV) :

It can not only realize the control of engine and motor separately, the vehicle is driven by motor, but also realize the common drive of engine and motor.

Features:

(1) It has the advantages of series structure and parallel structure;

(2) Complex structure and control, high structure cost.

Ii. Introduction of common types of electric vehicles

1. Weak hybrid cars

(1) Add idle start and stop function on the basis of traditional car

(2) The fuel saving rate is about 5%-8%

(3) The cost will increase by about 1000-3000 yuan

Weak hybrid vehicles mainly have STT motor system (enhanced start motor system) and BSG motor system (12V and 48V voltage platform).

2. Hybrid cars

(1) Add idle start and stop, acceleration booster, braking energy recovery and driving (cruise) charging functions on the basis of traditional cars

(2) Fuel economy rate is about 20%-30%

(3) The cost will increase by about 10,000-30,000 yuan

The middle hybrid power system has only one configuration, that is, single motor single clutch parallel system.

3. Force cars

(1) Add idle start and stop, acceleration booster, braking energy recovery, driving (cruising) charging and low-speed pure electric driving functions on the basis of traditional cars

(2) The fuel saving rate is about 30%-50%

(3) The cost will increase by about 30,000-70,000 yuan

4. Plug-in hybrid

(1) Add idle start and stop, acceleration booster, braking energy recovery, driving (cruising) charging and high-speed pure electric driving functions on the basis of traditional cars

(2) Fuel economy rate is about 50%-70%

(3) The cost will increase by about 50,000-100,000 yuan

(4) The dynamic system configuration is the same as strong mixing

5. Pure electric cars

Compared with the traditional car, the engine is replaced by the motor, the fuel tank by the battery, the transmission by a single or two-stage reducer replaced, the vehicle cost increases about 80,000 to 150,000 yuan.

Pure electric vehicles have the following advantages:

(1) Simpler structure and higher reliability of the power system;

(2) NVH performance incomparable to traditional cars;

(3) Zero emission and no pollution;

(4) The use cost is reduced by about 60%-80%;

3. Core components of electric vehicles

The key systems and components of electric vehicles are mainly "three, three and three small".