Does poor EMC performance of the BMS control board power adapter affect its operation?

Yes, poor EMC performance of the power adapter directly affects the normal operation of the BMS control board. An adapter with excessive noise will input conducted noise and power ripple into the BMS. This noise may interfere with sensitive circuits inside the BMS, leading to sampling errors, communication errors, or logic malfunctions. Simultaneously, the adapter itself may also be a source of radiation, affecting the radiated emissions test results of the entire BMS.

Therefore, selecting or using a power adapter that has passed relevant EMC standard certifications and has clean output is crucial for the BMS. Even with limited adapter performance, enhanced filtering design at the BMS's power input port should be implemented to block the ingress of external noise.