What are the principles of the battery internal resistance detector?

Regarding the battery, if the internal resistance is increased by more than 20% from the reference value (average value), the battery performance will drop to a level lower. This value is also the standard that IEEESTD proposes to take immediate corrective measures (discharge test or replacement). Based on this proposed benchmark, the alarm value is set to 20%. Correspondingly, when the battery capacity drops below 80%, the aging degree of the battery is the same as △T in the graph. This time is unpredictable. At the same time, the rate of capacity decay will become more and more blocky, and the internal resistance value will be newer. It will increase faster and faster. Therefore, we propose to replace the battery in time to improve the reliability of your company's battery system. So far, the actual method of judging the health of the battery has only used the standard recommended by IEEE. Therefore, we propose that when the internal resistance of the battery is increased by more than 20%, the unit battery should be considered to take corrective or replacement measures. Disclaimer: Some pictures and content of the articles published on this site are from the Internet. If there is any infringement, please contact to delete.