6LR61 alkaline battery

　　What are the solutions to the charge balancing method of 6LR61 alkaline battery?

　　Lithium battery pack charge balancing method

　　1. Traditional passive method: In a general lithium battery management system, each battery cell is connected to a load resistor through a switch. This passive circuit can discharge individual selected cells. But this method is only suitable for suppressing the voltage rise of the strongest battery cells in charging mode. In order to limit power consumption, such circuits generally only allow discharge with a small current of about 100mA, causing the charge balance to take up to several hours.

　　2. Active balancing method: There are many active balancing methods in relevant information, all of which require a storage element for transferring energy. If capacitors are used as storage elements, a huge switch array is required to connect them to all battery cells. A more efficient method is to store energy in a magnetic field. The key component in this circuit is a transformer.

　　Solution for active balancing method of lithium battery pack charging

　　Active balancing abandons the passive balancing method of consuming current and changes it to a method of transmitting current. The device responsible for charge transfer is a power converter, which allows the small batteries in the lithium battery pack to transfer charge whether they are charging, discharging or idle, so that dynamic balance can be maintained between the small batteries.

　　Because the charge transfer efficiency of the active balancing method is extremely high, it can provide higher balancing current, which means that this method has better balancing ability when the lithium battery pack is charging, discharging and idle.

　　1. Strong fast charging capability: The active balancing function can make each small battery in the lithium battery pack reach balance faster. Therefore, fast charging is safer and suitable for high-rate charging with larger current.

　　2. When idle: Even if each small battery has reached the equilibrium state during charging, due to different temperature gradients, 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 to The leakage speed is different. Test data shows that the leakage rate doubles every time the battery rises by 10°C. The active balancing function ensures that the small batteries in the idle lithium battery pack are constantly rebalanced, which is beneficial to the power stored in the battery pack. It can be fully utilized so that when the battery pack's working capacity is over, the remaining power of a single small lithium battery is minimal.

　　3. When discharging: There is no lithium battery pack with a discharge capacity of 100%. This is because the end of the working capacity of a group of 6LR61 alkaline battery is determined by a certain small lithium battery that is discharged first, and there is no guarantee that all small 6LR61 alkaline battery will be discharged. 6LR61 alkaline battery can be fully discharged at the same time. Instead, there are individual small 6LR61 alkaline battery that retain unused residual energy. Through the active balancing method, when the lithium battery pack is discharging, the internal large-capacity lithium battery will distribute electric energy to the small-capacity lithium battery. Therefore, the small-capacity lithium battery can also be fully discharged, and there will be no residual electric energy in the battery pack. However, the battery pack with active balancing function has a larger actual storage capacity (that is, it can release electric energy closer to the nominal capacity).

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