Why is the charging noise so loud for new energy vehicles?
2 Answers
Normal phenomenon. During fast charging of pure electric vehicles, various cooling fans operate to maintain system stability. Below is additional information: 1. Charging methods for new energy vehicles: When charging, follow the principle of frequent shallow charging. During actual usage, properly manage the vehicle's charging time and frequency. Regarding charging frequency, maintain the battery's state and avoid waiting until the battery level drops below 15% to 20% before charging. Over-discharging can cause the positive and negative active materials inside the battery to gradually convert into resistance, thereby reducing the battery's lifespan. 2. Precautions: During daily driving, if the remaining battery level cannot meet the mileage requirements for subsequent destinations, promptly locate a nearby charging pile for charging. When time permits, always prioritize slow charging mode.
I just started driving a new energy vehicle last month and was a bit alarmed by the loud buzzing noise during charging. Later, I asked the 4S store and learned it was the cooling fan working. During fast charging in summer, the battery temperature rises, causing the fan to spin faster and louder, similar to a computer cooling fan. If you occasionally hear a clicking sound, that's the relay switch operating. Charging sounds are quieter in winter, but using the heater consumes more power. At home, slow charging is usually silent, while public fast charging stations are naturally louder—no need to worry too much. However, if you hear continuous sharp screeching or metal grinding noises, stop charging immediately and check, as it might indicate a faulty charging pile or an issue with the onboard charging module. Don’t force the charging process.
