Electric quantity balancing and charging method for lithium cell

Abstract

This invention provides one lithium battery balance and charging method, which comprises the following steps: monitoring series each lithium battery level or electricity difference; when any two lithium battery levels or volumes exceed certain value adopting series lithium battery simultaneous minimum level to make each battery volume zero; then continuing series charging to make each lithium battery achieve even charging status.

Description

technical field [0001] The present invention relates to a lithium battery power balance and charging method, in particular to a charging method using the lowest point voltage volts as a balance reference level to obtain the most uniform charging state of serially connected lithium batteries. Background technique [0002] Various portable products such as portable TVs, electric tools, photographic equipment, portable personal computers, etc. are born with the progress of human electronic technology, and power batteries are the only source of kinetic energy for many electric products, so the power battery Size, weight, lifespan and safety conditions play a decisive role in the performance of electric products. [0003] Lithium batteries have the advantages of small size, light weight and almost 100% charge / discharge feedback. Therefore, lithium batteries connected in series will become new power batteries. However, when the lithium battery core is overcharged, lithium metal wi...

AI Technical Summary

Problems solved by technology

However, such a charging and discharging method will cause the differences of the batteries in the lithium battery pack to accumulate continuously under repeated cycles, causing the overall charging capacity of the lithium batteries connected in series to decline rapidly.

Images