Lead-acid batteries are a very complex chemical reaction system. External factors such as the size of the charge and discharge current and its operating temperature will affect the performance of the battery. Calculating the SOC value of the battery and determining the running mode of the car according to the running state of the car and other parameters is a key technology of electric vehicles. In this article, we will introduce three charging methods for Lead-acid batteries.

● Pulse charging

This charging method is simple and economical. Also, it has a large charging current and fast charging speed. But when the grid voltage fluctuates, the charging current also fluctuates.

● Constant current charging

In order to prevent the temperature rise in the lead-acid battery from being too high and the loss of the electrolyte too high, the charging current will be adjusted to be relatively small. Accordingly, the charging time will be longer. On the other hand, if the charging time is too long, the battery may be overcharged. We need to set up an overcharge detection or timing circuit to prevent damage to the battery due to overcharge.

● Constant voltage charging

Both theory and practice have proved that constant voltage charging is safe when the charging voltage is lower than the upper limit of the charging voltage, even if the charging time is long, there is no danger. If necessary, the battery can still work In the floating state.


car storage battery | Pulse charging This charging method is simple and economical. Also, it has a large charging current and fast charging speed. But when the grid voltage fluctuates, the charging current also fluctuates.