Briefly describe the equilibrium principle of lithium batteries

Lithium battery packs usually consist of one or several battery packs in parallel, and each battery pack consists of 3 to 4 batteries in series. This combination can simultaneously meet the voltage and power required by notebook computers, medical equipment, detection instruments and industrial applications. Claim. However, the battery equalization technology, this commonly used configuration usually does not exert its great effect, because if the capacity of a series battery does not match the other batteries, the capacity of the entire battery pack will be reduced. The battery capacity mismatch in lithium battery equalization technology includes state of charge (SOC) mismatch and capacity/energy (C/E) mismatch. In both cases, the total capacity of the 18650 lithium battery pack can only reach the capacity of the weak battery. In most cases, the cause of battery mismatch is imperfect process control and testing methods, rather than changes in the chemical properties of lithium ion itself. Prismatic lithium batteries require stronger mechanical pressure during processing, and differences between batteries are more likely to occur. In addition, lithium-ion polymer batteries will also have differences between batteries due to the use of new processes. Battery equalization technology uses battery equalization solution technology to deal with SOC and C/E mismatch problems, thereby improving the performance of series-connected lithium battery packs. The battery mismatch problem can be corrected by balancing the battery during the initial adjustment process. After that, it only needs to be balanced during the charging process, while the C/E mismatch has to be balanced during the charging and discharging processes. Although the defect rate of a certain battery manufacturer may be very low, in order to guard against the problem of battery life being too short, we still need to provide further quality assurance. 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 post: Analysis of the eight advantages of 18650 lithium batteries