When designing battery management systems (BMS), engineers inevitably face a critical choice: should we prioritize top balancing that equalizes cells at full charge, or adopt bottom balancing that operates during discharge cycles? With lithium-ion battery prices projected to drop 18% in 2024 according to BloombergNEF, this decision directly impacts system ROI and safety.
As global lithium-ion battery demand surges 40% year-over-year (Statista 2023), a critical dilemma emerges: top balancing versus bottom balancing. Which method truly safeguards against overcharging in modern battery packs? Let's dissect this through the lens of a thermal engineer who's witnessed three battery fires caused by balancing failures.
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