Electric device with ptc heater and control board integrated with bus module

An electric device with PTC heater and control board integrated with bus module, comprising a plastic water box, wherein a cast aluminum part is inserted into the plastic water box and fastened to the plastic water box by a first bolt, the cast aluminum part is provided with an upper cover at its top, the cast aluminum part is provided with a high-voltage socket connected to the cast aluminum part by a third bolt on a side and a low-voltage socket connected to the cast aluminum part by a fourth bolt on a side away from the high-voltage socket, the cast aluminum part is provided with a cable assembly on a side adjacent to the side on which the low-voltage socket is arranged, the plastic water box has a plurality of water channels which are evenly distributed at its bottom, and the cast aluminum part has a plurality of slots corresponding to the water channels at a bottom of the cast aluminum part, the cast aluminum part is provided with a plurality of PTC heater accommodating cavities in which matching U-shaped aluminum tubes are arranged, a PTC heater is arranged in the U-shaped aluminum tube, a silicone sheet is arranged within the cast aluminum part and above the PTC heater, and a PCB control board is arranged within the cast aluminum part and above the silicone sheet, and a number of evenly distributed second bolts extend through the PCB control board and the silicone sheet to engage with the cast aluminum part.