Polymer Soft Pack lithium battery is a common type of lithium battery, which is widely used in electric vehicles, mobile communication equipment, energy storage systems and other fields. However, with the increase of service time, polymer Soft Pack lithium battery may appear aging, damage or failure. This article will introduce how to distinguish whether the polymer Soft Pack lithium battery is broken, help users find and deal with problems in time, and ensure the normal use of the battery.

1. Appearance inspection

(1) peculiar smell: broken polymer Soft Pack lithium battery may produce chemical reaction and release peculiar smell. If you smell pungent or burnt smell, the battery may have been damaged.

(2) shell deformation: observe whether the battery shell has obvious deformation, crack or expansion, which may be abnormal inside the battery and needs to be handled in time.

(3) leakage: if the battery shell is found to have liquid leakage or leakage phenomenon, the battery has been leaked, which may lead to battery failure or safety problems.

2. Charge and discharge performance test

(1) the charging speed slows down: when the charging speed slows down obviously, it takes longer to complete the charging, which may be because the battery has been aged or damaged.

(2) capacity decrease: judge whether the battery capacity decreases by the usage time after being fully charged. If the usage time decreases significantly, it may be that the battery capacity has decreased.

(3) charging temperature rise: if the battery temperature rises abnormally during the charging process, it may be that there is a fault inside the battery, which needs to stop charging and check immediately.

3. Voltage and internal resistance detection

(1) voltage test: Use a professional voltage tester to detect the voltage value of the battery. If it is found that the voltage is abnormally low or unstable, it may be that the battery has been damaged.

(2) internal resistance test: the health status of the battery is judged by testing the internal resistance of the battery. Excessive internal resistance may be the manifestation of aging or damage of the battery.

4. Temperature detection

(1) temperature change in the charging process: monitor the temperature change in the charging process of the battery. Excessive temperature may be a problem inside the battery.

(2) temperature during dischargeDegree change: Observe the temperature change of the battery during discharge, and the abnormally elevated temperature may be the manifestation of battery damage.

5. Regular maintenance and precautions

(1) avoid excessive charging and discharging: avoid excessive charging or excessive discharging causing damage to the battery, and try to control it within the appropriate charging and discharging range.

(2) avoid high temperature environment: try to avoid exposing the battery to high temperature environment for a long time. High temperature will accelerate the aging of the battery and cause damage.

(3) regular inspection: regularly check the appearance, charging and discharging performance and temperature of the battery, find problems in time and take measures to deal with them.

Through the above methods and advices, users can better distinguish polymers. Soft Pack lithium battery whether it is broken, find problems in time and take corresponding measures to ensure the normal use and safety of the battery.