The voltage reaches the discharge protection value.
The lithium battery protection board has an over-discharge protection function. During discharge, when the battery voltage reaches the discharge protection value, the protection mechanism of the lithium battery protection board is triggered.
The lithium battery protection board can protect the charging and discharging of series and parallel batteries, and can also detect the state of overvoltage, overcurrent, overheating, undervoltage and short circuit of each battery cell. , extend battery life and avoid damage to the battery caused by over-discharge. Lithium battery protection board is an indispensable component of lithium batteries.
The protection card is a load balancer.
Becausethat it can really extend the battery life and ensure the quality and brand of your lithium battery. At the beginning, balancing did not play a big role, but as the battery is used, After charging and discharging N times, it is not excluded that the voltage of some cells and batteries is unbalanced, which will adversely affect battery life. It could have been used for 10 years, but now it can only be used for 8 years.
When the battery is produced and stored for a long time, the static power consumption of each channel of the protection board and the self-discharge rate of each cell are different, resulting in the voltage of each battery string. Throughout the battery, there is therefore an obvious pressure difference, but provided a constant capacity is ensured, the equalizer has the function of equalizing the battery voltage, thiswhich can achieve the effect of full charge and full discharge of the battery capacity, so that the battery can exert its maximum effect.
Balanced charging process
At the beginning of En charging the battery, the current is constant and the DC power system keeps the battery current limit at 0.1C10A, while the battery voltage continues to increase. At the initial stage, the battery voltage is relatively low and the charging voltage is also low under current limitation. As you charge, the battery capacity gradually increases. In order to keep the charging current at 0.1C10A, the charging voltage gradually increases.
Until the charging current limiting operating mode changes to the charging voltage constant voltage operating mode. At this time, the battery voltage reaches the ma valuedefined ximal. In the middle of charging, once the voltage across the battery reaches a stable value, the charging current decreases exponentially. It is generally believed that under constant voltage charging, if the charging current remains unchanged or lower than a certain value for 3 consecutive hours in the last stage of charging, the battery can be considered fully sufficient.