Why is there no sound when charging an electric vehicle charger?
2 Answers
The reasons why there is no sound when charging an electric vehicle charger: 1. The charger is damaged: If the power indicator light does not turn on when the charger is plugged in to charge the electric vehicle, it means the charger is already damaged, and naturally there will be no sound; 2. Whether the charger is air-cooled: To force air cooling for the switching power supply power tube, some electric vehicle charger manufacturers install a fan inside the charger. If there is no sound from this type of charger, it means the fan is damaged. Electric vehicles, also known as electric-driven vehicles, are divided into AC electric vehicles and DC electric vehicles. The electric vehicles commonly referred to by people use batteries as the energy source, converting electrical energy into mechanical motion through components such as controllers and motors, and controlling the speed by adjusting the current size.
Recently, I encountered a similar situation where my electric vehicle charger usually makes a slight buzzing sound while charging, but that time it was completely silent. At first, I thought it was broken, but later I found out that most new chargers now use fanless designs or highly efficient circuits, so the noise is naturally very low. However, it could also be that the fan isn’t spinning, leading to poor heat dissipation without any audible alarm—in which case, you should check if the charger is overheating or has accumulated dust over time. Another possibility is an issue with the indicator light; if the LED screen isn’t lit, you might mistakenly think it’s silent, so make sure to check the power light status. A common issue could also be a non-functioning relay, where the circuit fails to initiate charging but appears silent on the surface. For safety, I recommend first trying to restart the charger by unplugging and reconnecting it, or testing a different outlet to rule out power supply issues. If the fan is spinning but silent, it means the design is excellent; otherwise, you might need to replace certain components to prevent accidents. In any case, don’t panic—start with simple self-checks, and if the problem persists, take it to a repair shop to measure the current with professional tools.
