What are the ways to prevent lithium-ion batteries from bulging
1. The first is the unqualified manufacturing process. If the electric vehicle market is mixed, many companies due to the limited manufacturing level of lithium-ion batteries, the electrode coating is uneven, and there is no air gap for the battery, such a battery is very prone to bulging.
2. The lithium-ion battery pack is overcharged. On the one hand, battery overshoot is easy to cause fire, and on the other hand, it can also cause battery bulge. Overcharging of the battery will cause a lot of heat in the battery, causing the electrolyte to decompose and vaporize, and the battery will bulge.
3. The charging current is too large. At present, many car owners modify batteries and electric vehicles without permission. In addition, some car owners buy cheap mismatched chargers for the sake of cheapness. Batteries of different sizes have a specified voltage and current. If the charging current is too large, it will lead to If the precipitation on the electrode plate is too fast, the chemical reaction is insufficient, the temperature is too high, and if the exhaust is not timely, the phenomenon of battery bulging will naturally occur.
4. The pressure of the safety valve is too high. People in the industry know that the electric vehicle battery is equipped with a safety valve to ensure safety. When the pressure in the electric vehicle battery rises, the safety valve will automatically open and release the pressure to ensure The air pressure inside and outside the battery is balanced. If the safety valve cannot be opened normally when the pressure in the lithium-ion battery pack rises, over time, due to the high pressure in the battery and the imbalance of internal and external air pressure, the phenomenon of bulging will occur.
5. Mixed use of chargers, some car owners have more than one electric car at home, and they are often used in combination when charging electric cars. For example, charging a 48-volt battery with a 60-volt charger, or charging a high-volt battery with a low-voltage battery, charging for a long time will cause the battery to bulge.
6. The charging time is too long. Under normal circumstances, the battery is fully charged for 12 hours. However, some friends often don’t care after plugging in the charger for the electric car, and it has been charged for one night, and even more than 24 hours. hour. Such a long-term charging method will definitely cause great damage to the battery, and the bulging of lithium-ion batteries must be inevitable.
7. Use the fast charging method. Although electric vehicles have brought us great travel convenience, there are times when there is no electricity on the way. Therefore, sometimes only fast charging can be used. However, this method is very easy to cause the lithium-ion battery to bulge.
