What are the conventional charging methods for maintenance-free batteries?

There are three types of conventional charging. 1. Constant current charging method The constant current charging method is a method of adjusting the output voltage of the charging device or changing the resistance in series with the battery to keep the charging current intensity constant. The method is simple, but because the acceptable current capacity of the battery varies with The charging process gradually decreases. In the later stage of charging, the charging current is mostly used to electrolyze water, and gas appears, which makes the gas out too much. Therefore, the stage charging method is often used. 2. Stage charging method This method includes two stage charging method and three stage charging method. 1) The two-stage method uses a combination of constant current and constant voltage charging method. First, charge with a constant current to a predetermined voltage value, and then change to a constant voltage to complete the remaining charging. Generally, the switching voltage between the two stages is the constant voltage of the second stage. 2) In the three-stage charging method, constant current charging is used at the beginning and end of charging, and constant voltage charging is used occasionally. When the current decays to a predetermined value, the second stage is switched to the third stage. This method can minimize outgassing, but as a fast charging method, it is subject to certain restrictions. 3. In the constant voltage charging method, the voltage of the charging power supply maintains a constant value during the entire charging time. With the gradual increase of the battery terminal voltage, the current gradually decreases. Compared with the constant current charging method, the charging process is close to the optimal charging curve. Quickly charge with constant voltage. Because the battery potential is relatively high at the beginning of charging, the charging current is very high. As the charging progresses, the current will gradually decrease. Therefore, only a simple system is required. Disclaimer: Some pictures and content of articles published on this site are from the Internet. If there is any infringement, please contact to delete. Previous: What are the advantages of magnesium batteries?