Winding structure of metal foreign matter detection coil for inductive power transmission, and detection method

The invention discloses a winding structure of a metal foreign matter detection coil for inductive power transmission, and a detection method. The winding structure comprises at least one coil matrix, wherein each coil matrix comprises at least two coil groups; each coil group comprises at least one induction coil pair, the induction coil pair comprises a first induction coil and a second induction coil, the tail end of the first induction coil is connected with the head end of the second induction coil, and the winding directions of the first induction coil and the second induction coil are opposite; and the induction coils of every two coil groups are alternately arranged in the same direction, and one induction coil in another coil group is arranged between the first induction coil and the second induction coil of one coil group. The detection method comprises active detection and passive detection. According to the invention, the applicability of power wireless charging equipment to different purposes can