What are the components of a car's power supply system?
1 Answers
Automobile power supply system is mainly composed of battery, generator, and voltage regulator. The generator is responsible for charging the battery to keep it in a fully charged state for a long time. The battery and generator are responsible for supplying power to all electrical appliances in the vehicle. The following are relevant details: 1. Battery: It is an essential part of a car, which can be divided into traditional lead-acid batteries and maintenance-free batteries. Since the battery uses lead-calcium alloy as the grid frame, the amount of water decomposed during charging is small, and the evaporation of water is also low. In addition, the sealed structure of the shell releases very little sulfuric acid gas. Therefore, compared with traditional batteries, it has the advantages of not needing to add any liquid, easy connection to terminal posts, and long power storage time. 2. Automobile generator: It is the main power source of the car. Its function is to supply power to all electrical equipment (except the starter) and charge the battery when the engine is running normally (above idle speed). Based on the three-phase stator winding of an ordinary AC generator, the number of winding turns is increased and the wiring terminals are extended, and an additional three-phase bridge rectifier is added. At low speeds, the output is from the original winding and the additional winding in series, while at higher speeds, only the original three-phase winding outputs. 3. Voltage regulator: The generator is driven by the car's engine, and the engine speed is not constant, which will cause the generator output voltage to be unstable. Therefore, an electronic device is needed to control the generator so that the generator can output a relatively stable voltage at different engine speeds.
