Lithium battery charging method

In addition to the standard CC-CV charging mode, lithium battery can also be CC charged, CV charged, CP charged, CP-CV charged and so on. CC charge is short for constant current charge. During the whole charging process, the current is constant and the voltage increases gradually. Suggestion: Allow to use this method.

This method is typically used in the initial phase of charging a lithium-ion battery. How it works: The charger applies a fixed current to the battery, and as the battery charges, its voltage rises. The charging process continues at this constant current until the battery reaches its maximum voltage (usually 4.2V for lithium-ion batteries).

The most common charging method of lithium batteries In summary, the charging and discharging methods of lithium batteries are diverse, but in the final analysis, they are single-step or combined processes based on CC (constant current), CV (constant voltage), CP (constant power) or CR (constant resistance).

This study presents five charging methods for lithium-ion batteries, including Type I CC-CV, Type II CC-CV, Type III CC-CV, CL-CV, and CP-CV. Type I CC-CV represents the standard CC-CV charging method, serving as the baseline for comparison.

The most widely used charging technique. Step 1: Constant current (CC) phase – Supplies steady current, raising battery voltage. Step 2: Constant voltage (CV) phase – Holds voltage steady while reducing current. Ensures a full charge without overloading the battery. The most widely used charging technique.

At present, the mainstream charging mode of lithium battery is still CC-CV, which is because the polarization phenomenon exists in lithium battery (the immediate voltage is not the steady-state voltage). In the CC stage, the current is large and the charging speed is fast.