Why does the fan keep running during new energy vehicle charging?
1 Answers
It is normal for the vehicle's fan to operate and produce noise during charging. When charging, the vehicle supplies high voltage to the battery. Due to the high voltage and current involved, this can easily cause the battery pack to overheat. The temperature sensors inside the battery will then send an alert to the BMS (Battery Management System). As the core component of the battery, the BMS will send a signal to the fan. Upon receiving this signal, the fan control terminal activates, causing the fan to start running. This is a normal and necessary process during electric vehicle charging. To put it simply, this mechanism is similar to a computer - when not under heavy load, the fan noise is barely noticeable, but once overloaded, the vehicle's fan noise becomes relatively louder.