Winding The winding process of lithium battery is one of...
Storage at normal temperature
Lithium batteries need to follow specific conditions during the constant temperature storage process to ensure the safety, performance and life of the battery. The following is a detailed description of the constant temperature storage of lithium batteries:
Storage temperature range
The constant temperature storage temperature range of lithium batteries is critical to the performance and life of the battery. Depending on the storage time, the recommended storage temperature range varies:
1 month: -20℃ to 45℃
3 months: -20℃ to 35℃
1 year: -20℃ to 25℃
Storage humidity range
Humidity control is also an important factor in lithium battery storage. The recommended storage humidity range is 65±20%RH. High humidity may cause battery terminals to rust, which increases the risk of short circuit. Low humidity may cause dry battery terminals to generate static electricity, which increases the risk of fire.
Precautions for long-term storage
For long-term storage (more than 6 months), it is recommended that the lithium battery be charged with 50%-70% of the electricity, stored in a dry and cool environment, and charged every 3 months to prevent the battery from being too low due to self-discharge, resulting in irreversible capacity loss.
Charging state (SoC)
Lithium batteries should be kept in a certain state of charge before storage, and an SoC of 30% to 50% is usually recommended to reduce battery cell pressure and prevent the battery from falling to a damaging low charge state during storage.
Environmental condition
Lithium batteries should be stored in a cool, dry place to avoid extreme cold environments. Extreme temperatures can damage the battery and shorten its overall life. The recommended storage ambient temperature is 15°C to 25°C (59°F to 77°F).
Safety measure
Lithium batteries should be stored away from flammable substances, and ensure that the storage location is equipped with appropriate fire extinguishing facilities. Check the battery regularly and avoid tapping or hammering the battery with metal objects to prevent the battery from heating, smoking, deformation or burning.
Physical and electrical isolation
For batteries equipped with a battery management system (BMS), be sure to update the BMS firmware before storage and check regularly for any important updates. BMS play a vital role in protecting batteries from overcharging, deep discharges, and extreme heat.
CONCLUSION
By following the above guidelines, you can ensure the safety and performance of lithium batteries during constant temperature storage and extend the service life of batteries.
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