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How to safely handle lithium battery bulges? Lithium battery packs have strict requirements for chargers. If the charger used does not meet the requirements, it can cause the lithium battery to bulge, and in severe cases, it can lead to safety accidents. Lithium battery packs have no memory effect, what factors cause bulges? How to safely handle battery drum packs? Let's hear from the editor of Storage Electric.

How to safely handle lithium battery bulges?

1. Start replenishing the battery once you have used up half of it, and in rare cases, only perform a complete discharge and full charge maintenance (such as fully discharging and charging once after using it for several months to six months, frequent complete charging and discharging can easily lead to crystallization). This can greatly reduce the amount of crystallization and significantly slow down the bulging phenomenon;

2. Please do not continue to use the drum pack lithium battery. If there is a drum pack situation, try to replace it with a new lithium battery pack as soon as possible. Try not to rely on online teaching methods to continue using batteries.

3. Lithium battery packs generally need to be professionally recycled to avoid pollution. If they cannot be disposed of, they can be thrown into the classified recycling bin at the telecommunications service provider's service point.

4. Usually, when charging, pay attention to the choice of charger. For example, the rated charging voltage of the battery is 3.7V, and the limited voltage is 4.2V. Try not to choose a charger that exceeds this voltage, as long as it can maintain a constant current.

Why do lithium batteries bulge?

1、 Bulging caused by overcharging

Overcharging can cause all lithium atoms in the positive electrode material to run into the negative electrode material, causing the originally full grid of the positive electrode to deform and collapse, which is also a major reason for the decrease in battery pack capacity. During this process, there are more and more lithium ions in the negative electrode, and excessive accumulation causes lithium atoms to grow into dendrite crystals, causing the battery to swell.

2、 Bulging caused by over discharge

The SEI film has a protective effect on the negative electrode material, making the material structure less prone to collapse and increasing the cycling life of the electrode material. The SEI membrane is not static, and there may be slight changes during the charging and discharging process, mainly reversible changes in some organic compounds. After excessive discharge of the battery, the SEI film undergoes reversible rupture, and the SEI that protects the negative electrode material is damaged, causing the negative electrode material to collapse, resulting in the phenomenon of lithium battery bulging.

If the charger used does not meet the requirements, it can cause the battery to bulge, and in severe cases, it can lead to safety accidents and even explosions.

3、 Production and manufacturing process issues

The manufacturing level of lithium battery packs is affected by uneven electrode coatings and rough production processes.

These three factors lead to a violent reaction inside the lithium battery pack that is similar to a short circuit during use, generating a large amount of heat, which in turn leads to electrolyte decomposition and gasification, causing the battery to bulge.

The editor kindly reminds everyone that lithium battery bulges are already a precursor to major problems, and it is not recommended to use them again. Continuing on may result in unimaginable consequences such as short circuits, heating, smoking, and combustion.

How do lithium battery factories cope with battery inflation?

1. Be sure to control the dehumidifier and moisture.

2. It is necessary to control the production cycle and turnover time.

Will lithium battery drums explode?

Lithium battery packs may explode and must be stopped from use. Lithium batteries rise up to overcharge during charging, causing changes in the internal chemical properties of the battery and the generation of gases. Generally, polymer soft pack batteries will bulge due to overcharging, while steel shell batteries can explode. Be careful when using it, and it is best not to use cheap chargers as they have a significant impact on battery life. It is best not to use the battery with a bulge, as it is very dangerous. It is recommended to replace it.

Summary: In recent years, the safety of batteries has been a topic of continuous concern. Although battery technology is constantly improving, safety hazards still exist. The above are the reasons for the bulge of lithium battery packs and the safe handling methods. Lithium batteries may bulge or expand, please do not continue to use them to avoid dangerous situations. At this time, please replace the lithium battery in a timely manner!

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