Does the 1MHz, 30A/m magnetic field immunity test on the BMS control board affect the equalization function?

High-frequency magnetic field immunity testing at 1MHz may affect the BMS equalization function. High-frequency alternating magnetic fields induce electromotive forces in the equalization circuit loop, potentially interfering with control signals, causing sampling errors, or leading to circuit malfunctions. Protective measures include modularizing the equalization circuit and applying local shielding, using copper foil or conductive cloth to create a shielded cover with proper grounding. Use a closed magnetic circuit or shielded model for the equalization inductor. Twisted-pair cable is recommended for sampling lines. Connect a small ferrite bead in series on the equalization control signal line for filtering. Through a combination of spatial shielding and signal filtering, the coupling interference of high-frequency magnetic fields to the equalization circuit can be reduced.