Once the problem of polymer battery bulging occurs, such as bulging or swelling, please do not continue to use it to avoid dangerous situations. At this time, please replace the lithium battery in time. Can the lithium-ion battery bulge still be used? Let’s take a look at the reasons for the lithium battery bulge.
1. Problems with the manufacturing level of lithium-ion battery packs, the electrode coating is uneven and the production process is rough;
2. The violent reaction of short circuit generates a large amount of heat, which in turn causes the electrolyte to decompose and gasify. , the lithium-ion battery will bulge;
3. In addition, the lithium iron phosphate battery pack will bulge if it is not used for a long time, because the air is conductive to a certain extent, so if it is left for too long, it will cause the battery to bulge. The positive and negative poles are in direct contact, causing a chronic short circuit.
4. The reason for the poor quality of lithium-ion battery charger . The charger uses low-quality plates, refurbished or inferior components, generates heat, and causes inaccurate parameter drift, causing the charging pressure limit to be out of control, causing the internal gas extrusion of the lithium-ion battery to cause the battery shell to deform, bulge, crack, or even explode.
5. Charging time is too long. If overcharged, a large amount of gas will wash away the battery plate, causing the active material inside the lithium-ion battery pack to fall off, shortening the battery life, accelerating the battery's water loss, affecting the decomposition of the electrolyte , causing the battery temperature to rise, causing it to overcharge. !
6. When the lithium battery is overcharged, the chemical properties inside the battery will change, resulting in gas. Generally, polymer soft-pack batteries will "bulge" when overcharged, and steel-cased batteries will burst. If the lithium battery may be damaged, it may burst due to leakage. Do not use the battery and replace it.
