Abstract: A method of manufacturing a brake pedal coil printed circuit board is provided. The method comprises preparing a first epoxy layer having first copper foil laminated on both surfaces thereof; laminating each of second epoxy layers on the first copper foil, and laminating second copper foil on each of the second epoxy layers; forming a through hole, performing electroless copper plating on an inside surface of the through hole and the second copper foil, and forming an electrolytic copper-plated layer on each of the electroless copper-plated layer; forming circuits having a predetermined pattern on the electrolytic copper-plated layer and the electroless copper-plated layer and forming a gap between the circuits; applying a PSR ink onto the electrolytic copper-plated layer; applying a marking ink onto the PSR ink; forming a Ni-plated layer around the through hole and the hole land; and forming an Au-plated layer on the Ni-plated layer.

Abstract: The present invention provides a multilayer transformer PCB structure for an electric car and manufacturing method for the same, which includes first and second connecting copper tabs horizontally formed in plural on both surfaces of a base substrate, thereby forming inner layer circuits coupled to battery cells, and third and fourth connecting copper tabs stacked on a top surface of the first connecting copper tab and a top surface of the second connecting copper tab by patterning process a copper material several times as a predetermined thickness, thereby forming outer layer circuits coupled to the battery cells. According to the present invention configured thus, the transformer PCB for an electric car has a structure in which a conductive material having a predetermined thickness is stacked in a multilayer form, and thus an increased quantity of charges to be treated is highly distributed, thereby maximizing current efficiency.

Abstract: The present invention provides a multilayer transformer PCB structure for an electric car, which includes a base substrate formed of a predetermined material to form an basic layer of a transformer PCB, first and second connecting copper tabs horizontally formed in plural on both surfaces of the base substrate by patterning process a copper (Cu) material so that the copper (Cu) material has a predetermined thickness, thereby forming inner layer circuits coupled to battery cells, and third and fourth connecting copper tabs stacked on a top surface of the first connecting copper tab and a top surface of the second connecting copper tab by patterning process a copper (Cu) material several times so that the copper (Cu) material has a predetermined thickness, thereby forming outer layer circuits coupled to the battery cells, and a method of manufacturing the multilayer transformer PCB for an electric car.