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EnglishThe charge cycle of a Li-ion battery is closely related to the life of the Li-ion battery. The charging cycle specifically refers to a complete charging and discharging process of the lithium-ion battery. If decomposed, the charge cycle includes a full charge and a full discharge process. The life of a lithium-ion battery is related to the number of completions of its charge cycle, not the number of times the lithium-ion battery is charged and discharged.
In other words, the charging cycle of a lithium-ion battery is a manifestation of the charging of a lithium-ion battery, which refers to the process from full to full, and then from full to full. From the voltage of the existing battery design, a single-cell lithium-ion battery can complete a charging cycle from no-load 4.2V (the capacity is the nominal capacity) to 2.75V (the capacity is zero at this time).
During this process, if the battery starts to charge at a voltage value between 4.2V and 2.75V, it cannot be counted as a charge cycle. In terms of capacity, if a 2200mAh lithium-ion battery starts charging when there is still 1100mAh capacity, it cannot be counted as a charging cycle, but only half a cycle. However, in this way, the number of times of charging and discharging (500 charging cycles) of this lithium-ion battery reaches 1000 times.
On a numerical level, the charging cycle of a lithium-ion battery is equal to the total electrical power that a fully charged lithium-ion battery can output. However, taking the new lithium battery with a nominal 2200mAh as an example, its output power is 8.14Wh, that is, a fully charged battery can work for one hour at a current of 2200mAh, which is fully charged and discharged. meaning.
At present, the design charging cycle of lithium-ion batteries can generally reach 500 times, which is the life of lithium-ion batteries. The IEC standard states that after 500 cycles, a lithium-ion battery should be at 60% charge.
