A wireless charging transmitting or receiving apparatus comprising a first coil winding with a number of turns extending from an outermost turn to an innermost turn, the first coil winding comprising: an insulation layer, a first part of the first coil winding located on one side of the insulation layer, and a second part of the first coil winding located on the other side of the insulation layer, wherein the first part of the first coil winding comprises a first segment of conducting wire, the second part of the first coil winding comprises a second segment of conducting wire, the first segment of conducting wire is provided with N cutting openings, and the first segment of conducting wire is divided into N+1 first sub conducting wires by the N cutting openings provided on the first segment of conducting wire; and the second segment of conducting wire is also provided with N cutting openings, and the second segment of conducting wire is also divided into N+1 second sub conducting wires by the N cutting openings provided on the second segment of conducting wire, wherein each cutting opening extends along an extension direction of a corresponding segment of conducting wire, and N is an integer greater than or equal to 1; and the N+1 first sub conducting wires and the N+1 second sub conducting wires are electrically connected in a one-to-one manner, to form N+1 pairs of sub conducting wires by N+1 through holes, wherein each pair of sub conducting wires comprises one first sub conducting wire connected in series to one corresponding second sub conducting wire, characterized in that, in a plan view, the second segment of conducting wire lies adjacent inside of the first segment of conducting wire except for a joint region where the first segment of conducting wire and the second segment of conducting wire overlap in the plan view, wherein the N+1 through holes are located within the joint region, and wherein at least two of the N+1 pairs of sub conducting wires are arranged such that, in the plan view, at least two pairs of sub conducting wires are crossed within the joint region. the first part of the first coil winding comprises a first segment of conducting wire, the second part of the first coil winding comprises a second segment of conducting wire, the first segment of conducting wire is provided with N cutting openings, and the first segment of conducting wire is divided into N+1 first sub conducting wires by the N cutting openings provided on the first segment of conducting wire; and the second segment of conducting wire is also provided with N cutting openings, and the second segment of conducting wire is also divided into N+1 second sub conducting wires by the N cutting openings provided on the second segment of conducting wire, wherein each cutting opening extends along an extension direction of a corresponding segment of conducting wire, and N is an integer greater than or equal to 1; and the N+1 first sub conducting wires and the N+1 second sub conducting wires are electrically connected in a one-to-one manner, to form N+1 pairs of sub conducting wires by N+1 through holes, wherein each pair of sub conducting wires comprises one first sub conducting wire connected in series to one corresponding second sub conducting wire, characterized in that, in a plan view, the second segment of conducting wire lies adjacent inside of the first segment of conducting wire except for a joint region where the first segment of conducting wire and the second segment of conducting wire overlap in the plan view, wherein the N+1 through holes are located within the joint region, and wherein at least two of the N+1 pairs of sub conducting wires are arranged such that, in the plan view, at least two pairs of sub conducting wires are crossed within the joint region.