Recently, the development of domestic electric vehicles is increasing, to have a small Peng, NIO and other famous brands, according to my work two days ago, you have understood the working principle of the gasoline engine, but perhaps most people are relatively unfamiliar with the electric motor, so let me show you today.
Current magnetic effect
First of all, we need to be clear: the working principle of electric motor is current magnetic effect.
But what is the current magnetic effect?
In physics, it is stated that any wire with electric current can produce a magnetic field around it, which is called the magnetic effect of electric current. This is the effect discovered by Danish physicist Oster in July 1821.
The clever man invented the electric motor based on Oster's magnetic effect of electric current.
The working principle of electric motor
So what is an electric motor? This is the first thing we need to understand.
Electric motor is a kind of rotating electric machine, which can convert electric energy into mechanical energy.
Electric motor is divided into DC motor and AC motor, nowadays, most of the motors are AC motors.
AC motor mainly consists of an electromagnet winding or distributed stator winding used to generate a magnetic field and a rotating armature or rotor.
Rotor Stator diagram
Under the action of the rotating magnetic field of the stator winding, it is rotated by the current passing through the effective side of the stator winding and by the action of the magnetic field. The rotating armature rotates the drive shaft, which distributes the power to the wheels, and the electric car moves in this way.
Schematic diagram of electric motor movement (DC)
Schematic diagram of the rotation of an AC motor
Why electric cars accelerate faster than fuel cars
In a pure electric vehicle, the electric motor is the only power unit. In a pure electric vehicle, the drive motor converts the electrical energy from the battery into mechanical energy to drive the wheels. The advantage of the electric motor over the internal combustion engine is that it can provide peak torque at low speeds and its instantaneous power rating can be two to three times the power rating of the internal combustion engine. This is the reason why electric cars accelerate more than fuel cars.
Will electric motors shake up the internal combustion engine?
From the world trend, my answer is - will, definitely will.
1, In recent years, the earth's environmental condition is getting worse and worse, the air pollution is getting more and more serious, and this is mostly caused by the internal combustion engine and factory exhaust gas.
From the point of view of environmental protection, electric motor will definitely replace internal combustion engine.
We all know that the fuel of internal combustion engine is gasoline or diesel. In recent years, the earth's oil reserves have been declining sharply and will be depleted soon. Moreover, the exploitation of oil has also created a certain degree of pollution.
In terms of resource saving, electric motor will replace internal combustion engine.
The volume is relatively light, the volume is relatively small; the operation is reliable and durable; the manufacturing cost of the motor body is low and easy to maintain, which is conducive to the maintenance work afterwards.
In summary, we can see that it is only a matter of time before electric vehicles replace fuel vehicles.
Conclusion
Since the industrial revolution, the earth has been devastated by human beings, resulting in serious pollution now. The development of electric vehicles is a wise move made by mankind. I wonder what everyone in front of the screen thinks about this issue?
