Flat multi-phase inductor

The utility model discloses a flat type multiphase inductor which comprises a main iron core body, a plurality of first coils, a plurality of second coils and a plurality of secondary iron core bodies. The main iron core body is provided with a plurality of accommodating spaces, the plurality of first coils are respectively arranged in the plurality of accommodating spaces, the plurality of second coils are respectively arranged in spaces defined by the plurality of first coils, and the plurality of secondary iron core bodies are respectively arranged in spaces defined by the plurality of second coils. Each second coil comprises a series connection part, and adjacent second coils are connected with each other in a regular mode through the series connection parts. The secondary iron core body, the second coil and the first coil are correspondingly arranged in the multiple containing spaces of the main iron core body so as to form an inductor assembly in a combined mode. According to the flat type multi-phase i