1. A heat spreader connected to a power convertor comprising:a base plate comprising a first surface and a side surface, and the side surface is connected to the first surface;
an insulating material, being attached to the first surface and extended to be attached to at least a part of the side surface to increase a creepage distance between a conductive device close to a border of the power convertor and the base plate; and
an insulating frame, comprising a vertical part, which is fixedly connected to the insulating material attached to the first surface and the side surface,
wherein the insulating material is positioned between the power convertor and the base plate, and
wherein insulating frame is positioned between the power convertor and the base plate.