What are the characteristics of automotive electrical equipment?

Because one of the power sources in the car is the battery, which is the DC power source, the battery must be charged with the DC power source after discharge. So the generator on the car must also output DC power. For the above reasons, cars use direct current. ?

2. Use low-voltage power supply?

The rated voltages of automobile electrical system are 12v and 24V. At present, gasoline vehicles generally use 12V power supply, and heavy-duty diesel vehicles mostly use 24V power supply. ?

3. Adopt single-wire system?

Generally speaking, the connection between electrical equipment and power supply needs two wires, one is live wire and the other is zero wire, so as to form a loop, and the electrical equipment in the car is connected in parallel, with good conductivity.

4. Is the negative electrode grounded?

Because the car adopts single-wire system, one of the two lines of the electrical system must be replaced by the metal body of the car. When wiring, one pole of power supply and one end of electrical equipment should be connected with metal body. This connection is called grounding.

Extended data:

Automobile Electrical Equipment mainly introduces the basic knowledge of automobile electrical system, battery, alternator and regulator, starter, automobile lighting, signal system and alarm device, automobile audio-visual system, automobile electrical auxiliary device, automobile electrical equipment circuit and so on.

References:

Baidu encyclopedia-auto electrical equipment