Multi-coil combined electromagnet

The utility model relates to the technical field of electromagnets, and discloses a multi-coil combined type electromagnet which comprises a coil assembly and an iron core assembly. Wherein the coil assembly comprises n coil groups which are connected in parallel, and n is an integer greater than or equal to 2; each coil assembly is wound on the periphery of the iron core assembly; each coil group comprises m coils which are connected in series and are sequentially arranged at intervals in the axial direction of the iron core assembly, and m is an integer greater than or equal to 2; the i-th coils in different coil groups are arranged in sequence, and i is an integer greater than or equal to 1. According to the multi-coil combined type electromagnet provided by the utility model, the plurality of coil groups which are connected in parallel are combined in a staggered manner, so that the plurality of coil groups are sequentially electrified to sequentially drive the iron core assembly to act during working, an