Device for realizing electromagnetic partition heating through series resonance of multiple groups of coils

The utility model discloses a device for realizing electromagnetic partition heating through series resonance of multiple groups of coils. The heating device comprises a power supply input circuit, a half-bridge inversion resonance circuit, a coil control circuit and a transistor driving circuit, the half-bridge inversion resonance circuit comprises an upper bridge arm resonance circuit and a lower bridge arm resonance circuit, and the upper bridge arm resonance circuit and the lower bridge arm resonance circuit respectively comprise a resonance capacitor, a power transistor and a plurality of public heating coil groups. The heating coil assembly comprises heating coils and a switch connected with the coils, the resonant capacitor, the power transistor and the heating coil assembly are connected in series, the control end of the switch is connected into the coil control circuit, the coil control circuit can control whether the heating coil assembly is connected into the circuit in series or not, the heating c