What are the essentials for handling the Active Equalization Act for Li-ion Battery Pack Charging?

Active equalization discards the method of passively equalizing the current consumption, and changed it to the method of transmitting current. The device for serious charge transfer is a power converter. This device enables the small batteries in the lithium-ion battery pack to transfer charge regardless of whether they are charged, discharged or idle, so that the small batteries can always maintain dynamic balance. Due to the extremely high charge transfer efficiency of the active balancing method, a higher balancing current can be supplied, which means that this method has a stronger balancing ability when charging, discharging and idle lithium-ion battery packs. 1. Strong fast charging ability: The active equalization result can make the small batteries in the lithium-ion battery pack reach equilibrium faster, so the fast charging has higher security and is suitable for higher current high-rate charging methods. 2. When idle: Even though each small battery has reached the equilibrium state during charging, due to the difference in temperature gradient, the internal temperature of some small batteries is higher, and the internal temperature of some small batteries is lower, which will also cause the internal temperature of each small battery. The discharge rate is different. The test data shows that the discharge rate doubles every time the battery rises by 10°C. The active balance result can ensure that the small batteries in the idle lithium-ion battery pack are constantly rebalanced, which is beneficial to the battery pack. The stored power can be fully operated, so that when the battery pack is finished, the residual power of a single small lithium-ion battery is minimized. 3. When discharging: There is no lithium-ion battery pack that has a discharge capacity of 100%. This is because the end of a set of lithium-ion battery capacity is determined by a small lithium-ion battery that is the first to be discharged. Ensure that all small lithium-ion batteries can reach the full capacity at the same time. On the contrary, there will be an additional small lithium-ion battery that retains unused residual power. Through active equalization methods, when the lithium-ion battery pack is discharged, the internal large-capacity lithium-ion battery will distribute the electric energy to the small-capacity lithium-ion battery. Therefore, the small-capacity lithium-ion battery can also be fully discharged. There is residual electric energy left, and a battery pack with active balancing results has a larger actual storage capacity (that is, it can release electric energy closer to the nominal capacity). Finally, explain that the system performance recovered by the active balancing method depends on the ratio between the balancing current and the battery charging/discharging efficiency. The higher the dissatisfaction rate of a group of lithium-ion batteries, the higher the charge/discharge rate of the lithium-ion battery pack, and the higher the required balancing current. Disclaimer: Some pictures and content of articles published on this site are from the Internet. If there is any infringement, please contact to delete.