Does excessively long high-current loop wiring on the BMS control board interfere with the sampling circuit?

Excessively long high-current loop traces increase the loop area, and the strong magnetic field generated by the changing current can easily couple into adjacent sampling circuits, introducing noise and causing sampled values to become distorted. The solutions are to minimize the power loop area by making power path traces as short, wide, and close to the main trace. The sampling circuit should be physically located away from high-current loops, placed on the opposite side of the PCB or in a separate area. Differential sampling traces with tight coupling should be used to improve common-mode interference immunity. A local ground plane should be provided for shielding the sampling circuit. By reducing loop area, implementing spatial isolation, and using differential technology, sampling accuracy can be effectively protected from power loop interference.