An axial motor stator and its production process

Abstract

The invention provides an axial motor stator and its production process, which belongs to the technical field of motor stators and solves the problems of poor thermal conductivity due to air gaps between iron cores and coil windings in the prior art. The invention includes a casing, an iron core, and a coil winding sheathed on the outside of the iron core. It is characterized in that an iron core casing is provided between the iron core and the coil winding, and the iron core casing is made of insulating The gap between the shell and the iron core, between the iron core and the coil winding, and between the iron core winding and the shell is filled with potting glue, and the iron core sleeve is provided with a passage for the potting glue to pass through. glue channel. In the present invention, the minimum distance between the iron core and the coil winding is limited by setting the iron core casing, and the iron core and the coil winding are poured into one body through potting, so as to ensure the strength of the potting and at the same time ensure that there is sufficient insulation thickness between the iron core and the winding , There is no air gap between the iron core and the coil winding, forming an effective thermal insulation layer, which has the advantages of simple process and cost saving.

Description

technical field [0001] The invention belongs to the technical field of motors, and in particular relates to an axial motor stator and a production process. Background technique [0002] Compared with the traditional radial field motor, the number of coil windings in the disc motor is larger, the distribution is more scattered, and the production is more difficult. The traditional winding and embedding process needs to manually insert the pre-wound coils into the teeth of the iron core lined with insulating paper. This process is almost entirely done by hand, and the production efficiency is low, which is difficult to meet the production requirements of disc motors. need. [0003] In the current research direction, the combined application of flat copper wire and open iron core structure can greatly reduce the production difficulty of coil windings of disc motors. Specifically, the following steps can be taken: manufacturing an iron core with an open structure, winding a fl...

AI Technical Summary

Problems solved by technology

[0005] The above-mentioned patent forms a coating on the iron core directly through the mold. Although the original technology needs to put insulating paper between the teeth of each iron core and the problem of inconvenient operation, this process also has the problem of inconvenient operation.

In particular, the iron core cladding has a large contact area with the mold, and the iron core cladding is viscous during the manufacturing process, resulting in high mold opening resistance, and the iron core cladding is easily damaged by force during the mold opening process.

In addition, the production of iron core cladding needs to be carried out together with the iron core, which does not conform to the idea of ​​reducing production cycle by parallelizing multiple processes

If the iron core cladding is prepared in advance and then covered on the iron core, on the one hand, it is difficult to guarantee the lamination tolerance of the multiple contact surfaces between the iron core cladding and the iron core

The existence of tolerances will lead to air gaps between the core and the cladding of the iron core, the heat conduction effect will be deteriorated, and this structure has the risk of being loose and easily broken

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