Patent ID: 8791616
Filing Date: 2014-07-29
Classification: H02K,Y02E

Abstract:
1. An axial flux electric machine having permanent magnets constituting a magnetic circuit comprising a primary and a secondary portions, said axial flux electric machine comprising a rotor surrounding a stator, so as to constitute two axial air gaps, the rotor having magnetization zones constituting the primary portion of the magnetic circuit and the stator comprising a first and a second sides and having a support portion including a rim defining a plane, active modules constituting the secondary portion of the magnetic circuit, and fastener elements arranged to fasten the active modules removably to the periphery of the rim, wherein the rotor is made up of at least three sectors that are secured together, each of the sectors having a U-shaped profile comprising at least two branches, each with an internal and an external faces, the magnetization zones being disposed on the inside faces of the two branches of the U-shaped profile, the inside faces extending radially along said first and second sides of the stator, to enable the sectors to be paired on the stator by moving the sectors radially relative to the stator, the rim of the stator being also made of at least three sectors, said sectors being connected together, and wherein each active module comprises a block constituted by a stack of radially placed layers, two spacers constituting a lower spacer and an upper spacer, and at least a coil surrounding the lower and upper spacers, the lower and upper spacers protruding from said plane of the rim so as to constitute an abutment preventing any catching between the rotor and the coils of the stator.