It depends on two different situations:
1) The voltage between the lithium battery and the lithium battery is automatically kept equal, which is naturally a balanced voltage;
2) Voltages between individual lithium battery cells within the pack are not necessarily balanced.
Therefore, in order to achieve overall balance, it is necessary to balance different lithium battery units. We cannot only consider the balance between lithium batteries and lithium batteries.
The protection card is a load balancer.
Because it can really extend 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 voltageion of some cells and batteries becomes 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. In the whole battery, so there is an obvious pressure difference, but under the condition of ensuring constant capacity, the equalizer has the function of equalizing the battery voltage, which can achieve the effect of a 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 andthe 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 set maximum value. 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 less than a certain value penFor 3 consecutive hours during the last stage of charging, the battery can be considered fully sufficient.