Battery Balancing Explained: Passive vs Active Balancing
Battery balancing is essential for maintaining the performance and safety of lithium battery packs. There are two primary methods of balancing: passive and active, each with its own advantages and disadvantages. Understanding these methods is crucial for developers working with multi-cell lithium systems to ensure optimal battery functionality.
- ▪Cell imbalance occurs due to slight differences in internal resistance, capacity, and other characteristics among cells in a battery pack.
- ▪Passive balancing dissipates excess energy as heat, making it simpler and cheaper but less efficient for large battery packs.
- ▪Active balancing redistributes energy between cells, improving efficiency and performance but is more complex and costly.
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