Wireless charging coil PCB structure

摘要

A wireless charging coil PCB structure includes a first coil disposed on a first layer of PCB, where a center or peripheral of the first coil is a first non-coil region; a second coil disposed on a second layer of PCB, where a center or peripheral of the second coil is a second non-coil region; first conductive wires on the first non-coil region; and second conductive wires on the second non-coil region. Electric contacts are arranged between the first conductor and the second coil, and electrically connected in parallel to the first conductive wires and the portion of the second coil. Electric contacts are arranged between the second conductor and the first coil, and electrically connected in parallel to the second conductive wires and the portion of the first coil. The amount of charge is increased in the coil and resistance is reduced to overcome proximity effect.

主权项

1. A wireless charging coil PCB structure, comprising:
at least one first coil arranged on a first layer of a printed circuit board (PCB), the first layer having a first non-coil region on which the first coil is not arranged, the first non-coil region being on center or peripheral of the first coil; at least one second coil arranged on a second layer of the PCB, the second layer having a second non-coil region on which the second coil is not arranged, the second non-coil region being on center or peripheral of the second coil; a plurality of first conductive wires arranged on the first non-coil region and corresponding to partial wires of the second coil, a plurality of electric contacts arranged between the first conductive wires and the partial wires of the second coil and passing from the first layer to the second layer, the electric contacts electrically connecting the first conductive wires and the partial wires of the second coil in parallel; a plurality of second conductive wires arranged on the second non-coil region and corresponding to partial wires of the first coil, a plurality of electric contacts arranged between the second conductive wires and the partial wires of the first coil and passing from the first layer to the second layer, the electric contacts electrically connecting the second conductive wires and the partial wires of the first coil in parallel; at least one third coil arranged on a third layer of the PCB, the third layer having a third non-coil region on which the third coil is not arranged, the third non-coil region being on center or peripheral of the third coil; partial wires of the third coil being corresponding to the second conductive wires, a plurality of electric contacts arranged between the second conductive wires and the partial wires of the third coil and passing from the second layer to the third layer, the electric contacts electrically connecting the second conductive wires and the partial wires of the second coil in parallel; and a plurality of third conductive wires arranged on the third non-coil region and corresponding to the partial wires of the second coil, a plurality of electric contacts arranged between the third conductive wires and the partial wires of the second coil and passing from the second layer to the third layer, the electric contacts electrically connecting the third conductive wires and the partial wires of the second coil in parallel.