Thermal issues in BMS are usually underestimated
Heat sources:
MOSFET conduction loss
Balancing resistors
Linear regulators
📌 Hidden problem:
Poor thermal spreading → localized hotspots
👉 Solutions:
Use copper pours strategically
Distribute heat sources
Simulate worst-case current paths
⚠️ A “cool-looking” PCB can still fail thermally.
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