公开(公告)号：US20180026500A1

公开(公告)日：2018-01-25

申请号：US15543799

申请日：2016-01-14

Applicant: Yasa Motors Limited

Inventor： Timothy WOOLMER ,  Mark Stephen Ewart EAST ,  Jonathan James BIDDULPH ,  Andrew Lee COURT ,  Christopher Thomas MCCAW ,  Sophie Ann PARKER

IPC: H02K15/02 ,  H02K5/10 ,  H02K5/02 ,  H02K15/16 ,  H02K21/24

CPC classification number: H02K15/022 ,  H02K1/146 ,  H02K5/02 ,  H02K5/10 ,  H02K15/16 ,  H02K21/24 ,  H02K2201/03

Abstract: We describe a method of manufacturing a stator of an axial flux permanent magnet machine, the machine having a stator comprising a stator housing defining a chamber comprising a set of coils wound on respective stator bars and disposed circumferentially at intervals about an axis of the machine, and a rotor bearing a set of permanent magnets and mounted for rotation about said axis, and wherein said rotor and stator are spaced apart along said axis to define a gap therebetween in which magnetic flux in the machine is generally in an axial direction, the method comprising: providing first and second radial walls for said stator housing; providing inner and outer side walls for said stator housing; assembling said first and second radial walls and said inner and outer side walls around said set of coils to form a stator assembly, wherein said assembling further comprises: providing one or more collapsible elements between said side walls and one or both of said first and second radial walls; and attaching said side walls to said first and second radial walls, wherein said attaching comprises controlling one or both of a spacing and a degree of parallelism of said first and second radial walls by controlling the collapse of said one or more collapsible elements.