Efficient laminated coreless generator and manufacturing method thereof

A generator is provided with stator coils fixed with an outer fixing bracket and rotors driven by a spindle, and the rotors are fixed with the spindle, and both of stator coils and a rotor frame are of disk shapes with the spindle passing through centers therein; one rotor and an adjacent stator coil constitute one kinetic energy conversion unit, a plurality of kinetic energy conversion units are axially aligned through the spindle and successively mounted in a consistent direction to form a laminated generator body; permanent magnets configured in even number and having consistent shapes on a single rotor frame are distributed in a form of regular polygon around an axis, the shape of a single coil is the same as that of the magnet.