What is the reason for the swollen drone battery?

For example, the quality of the electrolyte itself, or the improper liquid level. The positive and negative materials and the processing technology are rough, the electrode coating is not uniform or the shell is deformed, etc. The second is that the assembly has poor airtightness, dust or liquid leakage, and so on. 2. Inappropriate use, overcharge and overdischarge, the battery will have gas pressure during charging and discharging. Under normal circumstances, the internal pressure of the battery will not increase significantly, but if the charging current is too large or the charging time is too long, it will appear. If the gas is too late to be consumed, it may cause internal pressure to rise, battery deformation, liquid leakage, and other undesirable phenomena. At the same time, the battery life will also be affected. 3. Temperature influence Temperature has the greatest influence on the charge and discharge performance of the battery. If the temperature drops, the reaction rate of the electrode will also decrease. Assuming that the battery voltage remains constant and the discharge current decreases, the battery power output will also decrease. The ambient temperature range should be between 5 and 30. Generally, the charging efficiency will increase with the increase of temperature, but when the temperature rises above 45, it will destroy the chemical balance in the battery and cause side reactions. Li-ion batteries are charged at high temperatures. The performance of the material will degrade, accelerate the risk of battery bulging, and the cycle life of lithium-ion batteries will also be greatly shortened. 4. Wrong storage method when the battery is not used for a long time. If the battery is not used for a long time, the phenomenon of swelling will occur because the air is conductive to a certain extent. Therefore, if the battery is left for too long, it is equivalent to the battery. The positive and negative poles are in direct contact, causing a chronic short circuit. If the spare battery is not used for a long time, it is recommended not to fully charge it and store it. It is best to keep about 50% of the power, and take it out for charging and discharging every two months, which will greatly extend the service life of the battery. Disclaimer: Some pictures and content of articles published on this site are from the Internet. If there is any infringement, please contact to delete. Previous: Lithium-ion battery performance and safety performance analysis