When the electric car charger is charging, there is no sound, there may be several situations
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The charger is damaged.
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Plug in the charger to charge the electric car.
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If the power indicator is not on (provided that there is no problem with the input power), the charger should be considered damaged and will not make a sound. Whether the charger is air-cooled. At present, electric vehicle chargers generally use switching power supplies. When it works, there is no sound. Most charger manufacturers install a fan in the charger for forced air cooling of the power tube of the switching power supply. If the charger is not air-cooled, no sound is normal. The air cooling fan is faulty. The charger fan is burned out, and the charging sound is normal. First, the fan plug is in poor contact with the socket. The fan then got stuck with severe oil and dirt. If the charger is forced air cooling, it should be handled in time when the fan does not turn, otherwise the power tube of the switching power supply will be damaged due to overheating.
The reason why there is no sound when charging the electric car charger:
1, charger damage: plug the charger to charge the electric vehicle, if even the power indicator is not bright, that is, the charger has been damaged, naturally there will be no sound;
2, whether the charger is air-cooled: electric car charger manufacturers in order to force the switching power tube to cool the air, installed a fan in the charger, this charger has no sound, that is, the fan is damaged. Electric vehicles are electric drive vehicles, also known as electric vehicles, divided into AC electric vehicles and DC electric vehicles. People usually say that the electric vehicle is a vehicle that uses the battery as an energy source and converts electrical energy into mechanical energy movement through the controller, motor and other components to control the size of the current and change the speed.