Power supply device

The invention discloses a power supply device which comprises a conversion module, a plastic shell and an inorganic material, and the conversion module comprises an input end, a potential ignition element, a conversion circuit and an output end. The input end is used for receiving an input source, and the potential ignition element is used for suppressing surge of the input source. The conversion circuit converts an input source into an output source, and the output end is used for providing the output source to a load. The plastic shell accommodates the conversion module, and the plastic shell is provided with an inner surface. The inorganic material is disposed between the potential ignition element and the inner surface, and the distance between the potential ignition element and the inner surface is less than 13 mm. Through the configuration of the inorganic material, the problem of flame penetration or overflow when a potential ignition element is burnt can be inhibited, and the phenomenon of carbonizati