3 ways to judge whether the lithium battery is sufficient

3 ways to judge whether the lithium battery is sufficient

There are 3 ways to determine whether the lithium battery is fully charged:

Ⅰ. Judged by the charging time

When the storage time of the battery is within 6 months, the general constant pressure current limit is filled with 24h. When the battery storage time is 6~12 months, the current constant pressure current limiting is filled with 48h. When the storage time of the battery is at 12~24 months, the current constant pressure current limiting is filled with 60H, and the charging time can be reduced by half when the charge voltage is increased by 0.05V/ hour. When the charging temperature is 10~20 degrees, the charging time is doubled.

Ⅱ. Judging by the change of charging current

The current is very large when it is just starting to charge. There is an equivalent capacitance, that is, the charging current of the capacitor starts up to hundreds of amperes and then falls exponentially, so the current limit must be set when charging. R1 positive and negative electrode absorption resistance; Rn battery ohmic resistance; C1, C2, positive and negative double layer capacitance. In the later stage of charging, the charging current of the continuous 3H is invariable.

Ⅲ. Judging by the value of the charging current

When the charging current is reduced to 2~3mA / Ah, it is believed that the charge current is sufficient (10~l5mA / Ah). The charge current is mostly used to maintain the oxygen cycle in the battery. Only a small current is used to maintain the recovery of the active material, so the charging current is small and stable.