How does a car charge its battery?
1 Answers
The principle of a car charging its battery is as follows: 1. Float charging: After the battery is charged, due to impurities in the electrolyte and plates, partial discharge occurs on the plates. Therefore, to keep the battery in a fully charged standby state, the battery is connected in parallel with a 12V charger to the DC bus. The 12V charger not only handles the regular DC load but also provides an appropriate charging current to the battery. This method is called float charging. 2. Equalization charging: Equalization charging is a method to balance the characteristics of the battery. During the use of the battery, due to individual differences and temperature variations, the terminal voltage of the battery may become unbalanced. To prevent this imbalance from worsening, the charging voltage of the battery pack is increased to perform an activation charge on the battery.