Circuit arrangement for faulty wiring of stator windings of brushless, electronically commutated electric motor for car fan drive

摘要

A circuit arrangement is described for faulty wiring of stator windings of a brushless, electronically commutated electric motor, especially a drive motor having a stator with stator windings fastened to a motor flange and an outside rotor surrounding the stator on its side facing away from the motor flange. It is for a car fan drive with a supporting switch plate with current paths located on the flange side facing the stator. Of the current paths, each is connected with the starts of the windings of each winding phase and one with the ends of the windings of all winding phases. The switch plate (63) consists of a carrier plate shaped like an annular disc which is fixed at the motor flange with a hub (67) together with the stator lamination packet on a bearing support tube (69). The current paths are busbars fastened concentrically to the hub on the carrier plate.The busbars consist of stamped parts and are located on the side of the carrier plate facing away from the stator windings