Polymer lithium -ion battery charging.lithium deep cycle marine battery manufacture

　　At present, the charging of the polymer lithium -ion battery is mainly the voltage limit flow and restriction method. In the early stage of constant current (CC) charging, the battery acceptance capacity is the strongest. As the charging process continues, the polarization effect is strengthened, the temperature rise is intensified, the voltage rises, the load should be the load. When the power reaches about 70 ~ 80%, the voltage reaches the maximum charging limit voltage and transfer to the constant voltage (CV) charging phase. In the constant voltage stage, it is called a trickle charging, which costs about 30%to charge 10%of the power. The current strength decreases and the temperature rise will not increase.

　　This process considers the total voltage or average voltage control of the battery pack. In fact, there are always those with higher single voltage. The other batteries in the group have entered the overcharging stage. In the same way, when discharging, there are discharge batteries in the group. The damage to the battery is fatal. The difference is only to produce a large amount of gas, flammable and explosion, and the appearance of the vast. The appearance changes and slowly, but the speed of failure is extremely fast, and it should be avoided strictly in normal use.

　　In this regard, there is a new lithium battery charging method called parallel control and equilibrium management. It can be managed to charge and discharged each section of electricity separately and balanced control. The advantages, although the initial capacity, voltage, internal resistance, etc. between the single electrical stamens can ensure the relative charging and depth consistency in the work, and gradually reach the common life end point. This method is particularly applicable to large -current discharge. Our company has developed PCB equilibrium protection for up to 20 sections of lithium power, and the maximum discharge current can reach 100A.

　　Therefore, when charging lithium batteries, you must use a dedicated lithium battery charger, especially to pay attention to the parameters of the electric stamens used, and be consistent. When the lithium battery combination is used, it is necessary to add PCB to the battery pack. Only by protecting the board, it is possible to avoid electric stains, leakage, and even fire, and explosion. It is as long as possible to extend the service life of the battery as long as possible, but it cannot be charged and increases the number of cycles of batteries.

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