The invention provides a portable vehicle
alternating current charging plug with an internal circulation heat dissipation function. The portable vehicle
alternating current charging plug with the internal circulation heat dissipation function comprises a shell, a
handle and a control main board, wherein the surface of the shell and the surface of the
handle are integrally formed; and the control main board is mounted in the shell. According to the portable vehicle
alternating current charging plug with the internal circulation heat dissipation function, the PCB is integrated in the charging plug, the occupied space of the charging plug is reduced, the charging plug is more convenient to use, a heat dissipation fan on the inner side can be started when the charging plug is used, after the heat dissipation fan is started, air in the shell is extracted through an
exhaust pipe for drainage, when the air is drained into a heat exchange
pipe, cooling of the air in the shell is completed in the working state that the heat exchange
pipe exchanges heat with outside air, a sealing structure in the shell can be guaranteed, and the
exhaust pipe can convey the cooled air to the interior of the shell again, so that circulating cooling of the air is guaranteed, and stable support and guarantee are provided for
continuous operation of equipment.