Therefore, it is of great significance to implement effective battery management system (BMS) for Li-ion batteries to ensure safety as well as prolong the service life of batteries.
The FMMEA's most important contribution is the identification and organization of failure mechanisms and the models that can predict the onset of degradation or failure. As a result of the development of the lithium-ion battery FMMEA in this paper, improvements in battery failure mitigation can be developed and implemented.
Basic structure of a lithium-ion cell. Lithium-ion batteries are also known as “rocking-chair” batteries, as they operate based on a reversible insertion principle called intercalation. During charge or discharge, lithium ions are shuttled between the two electrodes where they are accommodated in the electrode's lattice.
This paper introduces the overall structure of lithium-ion BMS and its basic functions. In addition, a BMS experimental platform is designed for three 3400 mAh lithium cobalt oxide batteries in series. The experimental platform has the following functions: high accuracy voltage and current measurement, SOC calculation, balance control, LCD etc.
Lithium-ion battery technology was first commercialized in 1991, and is successful due to its high energy density, high operating voltage, and low self-discharge rate. Applications of lithium-ion batteries range from portable consumer electronics to aerospace and electric vehicles (EVs).
To ensure safety and prolong the service life of Li-ion battery packs, a battery management system (BMS) plays a vital role. In this study, a combined state of charge (SOC) estimation method and passive equi- librium control are mainly studied for lithium cobalt oxide batteries.