1. Constant-Current Constant-Voltage Charging
First, the battery is charged with a constant current and then reaches a preset cut-off voltage. Then, the charging switched to the constant voltage charging mode, and the battery voltage was unchanged. The charging process continues until the current drops to the specified cut-off current or the charging time reaches the set cut-off time. It’s common method for lithium-ion batteries.
2. Pulse Charging
Pulse charging is considered an effective method to reduce charging time and improve battery charging and energy efficiency. The charging process charges with a preset current for some time, followed by a brief interruption or discharge with negative pulses. Repeat this until the battery is fully charged. Add a stop charging period or negative pulse between two consecutive pulses charging. In this way, the electrochemical reaction inside the battery can reach equilibrium when the next positive pulse arrives. Energy storage battery can use this charging way.
3. Multistage Constant Current Charging
Overcharging and longer charging time may result due to the CC-CV charging method. Multistage constant current charging is a good way to avoid bad effects on the battery. Multistage constant current charging refers to dividing the charging current into multiple stages according to certain rules, and the current of each stage is a fixed constant. After charging with a certain constant current to the set value, continue to charge with another constant current until the battery capacity reaches the set value. In the multistage constant current charging process, gradually decreasing currents replace curretn at CV stage during CC-CV charging.
