Composition of electric vehicle
The composition of electric vehicle includes: electric drive and control system, driving force transmission and other mechanical systems, as well as working devices to complete the established tasks. Electric drive and control system is the core of electric vehicle, and it is also the biggest difference from internal combustion engine vehicle. The electric drive and control system consists of driving motor, power supply and motor speed regulating device. Other devices of electric vehicles are basically the same as internal combustion engines.
Working principle: battery-current-power regulator-motor-power transmission system-driving car.
Performance characteristics of pure electric vehicles
Now the performance of pure electric vehicles is quite good in many aspects. It takes only 3.4 seconds for the sports car TeslaModels to accelerate from 0 to 100km/h, while it takes 6.5 seconds for ordinary recreational vehicles such as SmartED0 to accelerate to 50km/h, which is mainly due to the performance of the motor. However, in heavy-duty applications, pure electric vehicles are not used much, which may be due to the performance and cost of batteries. Torsion is the strength of the motor, and generally using torsion is not a problem.
Because the torque output of the motor is stable, the control is easier than that of the internal combustion engine, and the pure electric vehicle runs smoothly with little vibration and noise; And there is no need to shift gears as frequently as ordinary cars to ensure sufficient power. For example, TeslaModels only needs to shift gears once from standstill to top speed.
technical characteristics
● High energy conversion efficiency. The energy conversion efficiency of fuel cells can be as high as 60 ~ 80%, which is 2 ~ 3 times that of internal combustion engines.
● Zero emission and no environmental pollution. The fuel of the fuel cell is hydrogen and oxygen, and the product is clear water;
● Hydrogen fuel exists widely and can be obtained from renewable energy sources, independent of petroleum fuel.
Representative model: Tesla model?
Million car purchase subsidy