Polymer lithium battery characteristics and correct way for charging.

Polymer lithium battery characteristics and correct way for charging.

When our phone out of power, we need to recharge it, first find a charger better if it original recharge. Otherwise, it is easy damage battery during charging due to incompatibility or other reasons. Most of mobile phones support fast charging function, but we need to remind you slow charging could ensure better lifetime of mobile phone battery

At the same time, if our mobile phone is not used for a long time, we must first fully charge the polymer lithium battery, and when we fully charge the battery, do not put the battery on the charger, if we are long If the polymer lithium battery is not used at any time, it may cause separation between the battery and the mobile phone, thereby affecting the performance of the mobile phone.

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Lithium polymer battery features

Compared to lithium-ion batteries, lithium polymer batteries have the following characteristics:

1. Relatively, the problem of battery leakage is improved, but it has not been completely improved.

2. Can be made into a thin battery: with a capacity of 3.6V250mAh, its thickness can be as thin as 0.5mm.

3. The battery can be designed in a variety of shapes.

4. A single high-voltage: liquid electrolyte battery can only be connected in series with several batteries to obtain a high voltage, and the polymer battery can be made into a multi-layer combination in a single piece to achieve a high voltage because it has no liquid itself.

5. The amount of discharge is theoretically 10% higher than that of a lithium ion battery of the same size.

Will lithium polymer batteries explode?

Polymer lithium batteries, in the event of a safety hazard, will not explode and will only bulge. In terms of safety, the outer packaging is aluminum-plastic packaging, which is different from the metal casing of liquid lithium battery. The internal quality hazard can be immediately displayed through the deformation of the outer packaging. Once a safety hazard occurs, it will not explode and only bulge.

At present, most domestic polymer batteries are only soft-packed batteries, which use aluminum plastic film as the outer casing, but the electrolyte has not changed. The battery can also be thinned, its low-temperature discharge characteristics are better than that of polymer batteries, and the material energy density is basically the same as that of liquid lithium batteries and ordinary polymer batteries, but because of the use of aluminum plastic film, it is more than ordinary liquid lithium battery. Light. In terms of safety, when the liquid is just boiling, the aluminum plastic film of the soft pack battery will naturally bulge or rupture, and will not explode.

Teach you the correct lithium polymer battery charging method

2015-09-1822:15:12 Source: Pacific Security Network has been read by 0 people commented

Abstract: Lithium polymer battery is a chemical battery with high energy, miniaturization and light weight. The following small series will introduce you to the correct lithium polymer battery charging method. At present, lithium charging is mainly a voltage limiting current limiting method. The following will introduce you to the "teaching the correct lithium polymer battery charging method".

Lithium polymer battery is a chemical battery with high energy, miniaturization and weight reduction. The following small series will introduce you to the correct lithium polymer battery charging method.

At present, lithium charging is mainly a voltage limiting current limiting method. The initial constant current (CC) charging has the strongest battery receiving capacity. As the charging process continues, the polarization is strengthened, the temperature rise is intensified, and the voltage rises. When the charging reaches about 70. At ~80%, the voltage reaches the maximum charge limit voltage and is switched to the constant voltage (CV) charge phase. In the constant voltage phase, there is a trickle charge, which takes about 30% of the time to charge 10% of the charge, the current intensity decreases, and the temperature rise does not increase.

Lithium polymer battery

This process considers the total voltage or average voltage control of the battery pack. In fact, there is always a higher cell voltage, and other batteries in the opposite group have entered the overcharge phase. Similarly, during discharge, there is an overdischarged battery in the group. Overcharge and overdischarge are fatal to the battery. The only difference is that overcharge generates a large amount of gas, is prone to spontaneous combustion and explosion, and the appearance is severe; The appearance changes slowly, but the failure speed is extremely fast, and should be strictly avoided in normal use.

In this regard, there is a new lithium battery charging method called parallel control and equalization management, which can charge and discharge management and equalization control for each power module. This dynamic equalization concentrates the two equalizations of discharge equalization and charge equalization. The advantage is that although the initial capacity, voltage, internal resistance and the like are different between the individual electric cores, the relative charge and discharge intensity and depth consistency can be ensured in the work, and the common end of life is gradually achieved. This method is especially suitable for high current discharge. Our company has developed PCB balance protection for up to 20 series of series lithium batteries, with a maximum discharge current of up to 100A.

Therefore, when charging the lithium battery, be sure to use a dedicated lithium battery charger, especially pay attention to the parameters of the battery used. It must be consistent. When the lithium battery is used in combination, it must be added to the battery pack. The protection board can avoid the electric core package, leakage, even fire, explosion, and prolong the battery life if possible, but it cannot be charged and increase the number of cycles of the battery.

The page contains the contents of the machine translation.