Does the radiated interference of the BMS control board fluctuate excessively during dynamic charging and discharging?

During dynamic charging and discharging, the high-current switching and balancing circuit operation generate transient electromagnetic fields, leading to fluctuations in radiated interference, especially exceeding limits at the switching frequency harmonic point. The root cause lies in the large rate of current change and parasitic inductance in the circuit. Countermeasures include optimizing the power circuit layout, shortening and widening the charging and discharging current path to reduce the circuit area, adding a small resistor in series with the power MOSFET gate to slow down the switching speed, and shielding sensitive signal lines such as current sampling. Additionally, a small-capacity CBB capacitor or RC snubber circuit can be connected in parallel between the MOSFET's drain and source terminals to absorb high-frequency energy. By reducing di/dt and minimizing the antenna effect, stable control of the radiation level can be achieved.