Transformer module and power module

Abstract

The present disclosure provides a manufacturing process of a metal winding, where the manufacturing process includes: cutting a first metal copper foil to form a connector and a pin; performing insulation processing on a surface of at least one of the first metal copper foil and a second metal copper foil; bending the first metal copper foil to form a first metal winding to cover on a magnetic core; and covering the second metal copper foil at least partially on a surface of the first metal copper foil to form a second metal winding, and a pin of the first metal winding passes through the second metal winding.

What is claimed is: 
     
         1 . A manufacturing process of a metal winding, comprising:
 cutting a first metal copper foil to form a connector and a pin;   performing insulation processing on a surface of at least one of the first metal copper foil and a second metal copper foil;   bending the first metal copper foil to form a first metal winding to cover on a magnetic core; and   covering the second metal copper foil at least partially on a surface of the first metal copper foil to form a second metal winding, and a pin of the first metal winding passes through the second metal winding.   
     
     
         2 . The manufacturing process according to  claim 1 , wherein the performing insulation processing on the surface of at least one of the first metal copper foil and the second metal copper foil, comprises:
 performing a first insulation processing on the surface of at least one of the first metal copper foil and the second metal copper foil to form an inner base insulating layer; and   performing a second insulation processing on the metal copper foil that forms the base insulating layer, to form an outer additional insulating layer.   
     
     
         3 . The manufacturing process according to  claim 2 , wherein an insulation mode of the base insulating layer is electro-deposition. 
     
     
         4 . The manufacturing process according to  claim 2 , wherein the additional insulating layer is an insulating glue locally arranged on the base insulating layer. 
     
     
         5 . The manufacturing process according to  claim 1 , wherein before performing insulation processing on the surface of at least one of the first metal copper foil and the second metal copper foil, further comprising:
 performing roughening treatment on the at least one of the first metal copper foil and the second metal copper foil.   
     
     
         6 . The manufacturing process according to  claim 1 , wherein after performing insulation processing on the surface of at least one of the first metal copper foil and the second metal copper foil, further comprising:
 coating an adhesive layer to the surface of at least one of the first metal copper foil and the second metal copper foil.   
     
     
         7 . The manufacturing process according to  claim 1 , comprising:
 winding the second metal winding on the surface of the first metal winding; and   forming a through hole or a gap during the winding process to let the pin of the first metal winding pass through the second metal winding.   
     
     
         8 . The manufacturing process according to  claim 1 , comprising:
 cutting a third metal copper foil to form a through hole or gap; and   bending the third metal copper foil to cover a surface of the second metal winding, to form a third metal winding, wherein the pin of the first metal winding passes through the through hole or the gap.