CN221862541U - A stator connection structure of an axial flux motor - Google Patents

Abstract

A stator connection structure of an axial flux motor relates to the technical field of motors. It includes a plurality of stator winding modules arranged in a circumferential direction, wherein the stator winding module includes an iron core body, coil windings are wound on the iron core body, the coil windings are electrically connected, an annular collector ring is arranged in the iron core body, the collector ring includes an insulating ring, a conductor is arranged on the insulating ring, and the coil windings are electrically connected through the conductor arranged on the insulating ring. The utility model realizes the connection between stators through the collector ring, omits the insulating glue sealing in the prior art, improves the heat dissipation effect of the motor, and reduces the diameter and volume of the motor.

Description

A stator connection structure of an axial flux motor

Technical Field

The utility model relates to the technical field of motors, in particular to a stator connection structure of an axial flux motor.

Background Art

In the prior art, the phase lines of the axial flux motor are arranged around the outer circumference of the stator and are electrically connected to each other. In order to ensure good insulation effect, insulating glue is filled between the stator and the motor housing. This connection structure has obvious defects: 1) The filled sealant affects the heat dissipation effect of the motor; 2) The stator wiring is arranged between the stator and the housing, sacrificing the internal space of the motor, increasing the diameter and volume of the motor, and is not suitable for use in small-size occasions.

Utility Model Content

The utility model aims to provide a stator connection structure of an axial flux motor, which can effectively solve the problems in the background technology.

The technical solution for achieving the above-mentioned purpose is: a stator connection structure of an axial flux motor, including a plurality of stator winding modules arranged along the circumferential direction, the stator winding module including an iron core body, coil windings wound on the iron core body, and the coil windings are electrically connected, characterized in that: an annular collector ring is arranged in the iron core body, the collector ring includes an insulating ring, a conductor is arranged on the insulating ring, and the coil windings are electrically connected through the conductor arranged on the insulating ring.

Furthermore, the conductor is arranged on the inner wall and/or the outer wall of the insulating ring.

Furthermore, the conductors are arranged on both the inner wall and the outer wall of the insulating ring, and the conductors located on the inner wall of the insulating ring respectively realize electrical connection between the coil windings through the conductors located on the outer wall of the insulating ring.

Furthermore, the conductor on the inner wall of the insulating ring is connected to the corresponding conductor on the outer wall via a conductive ring, and the conductive ring is arranged in a circular hole that penetrates the insulating ring and the corresponding two conductors.

Furthermore, each coil winding is provided with two wire ends, and the coil winding is in contact with and connected to part of the conductor through the wire ends. The conductor in contact with and connected to the wire ends of the coil winding is arranged on the upper part of the inner wall of the insulating ring, and a positioning groove is arranged in the middle part of the upper end of the conductor located on the inner wall of the insulating ring. The positioning groove passes through the insulating ring at the same time, and the upper end is an opening, and the wire ends of the coil winding are inserted into the positioning groove through the opening; the conductor that is not in contact with the wire ends is arranged on the outer wall of the insulating ring.

Furthermore, the core body includes a magnetic core with pole shoes connected at both ends. The pole shoes protrude outward from the coil windings and are gap-matched with the coil windings. The conductor arranged on the outer side wall of the insulating ring is arranged between the pole shoes of the core body.

Furthermore, the curvature of the outer wall of the insulating ring is consistent with the curvature of the inner wall of the pole shoe, and they fit each other, and the radial position of the core body is positioned by the collector ring.

The beneficial effects of the utility model are as follows: 1) The utility model realizes the connection between stators through the slip ring, omitting the insulating glue sealing in the prior art, improving the heat dissipation effect of the motor, and reducing the diameter and volume of the motor; 2) The utility model realizes the connection between stators through the slip ring, simplifies the product structure, and improves the assembly efficiency of the product; 3) The curvature of the outer wall of the insulating ring of the utility model is consistent with the curvature of the inner wall of the pole shoe, and they are arranged in a close fit, so that the slip ring can realize the radial position positioning of the stator winding module while realizing the stator connection; 4) The utility model arranges the conductor on the inner wall and the outer wall of the insulating ring at the same time, so that the distribution of the conductor on the insulating ring is simpler, and at the same time, the conductor on the outer wall is arranged between the pole shoes of the iron core body, which is convenient for the stator winding module to fit with the slip ring, thereby realizing the positioning function of the stator winding module.

BRIEF DESCRIPTION OF THE DRAWINGS

Fig. 1 is a perspective view of the utility model;

FIG2 is a perspective view of a slip ring;

Fig. 3 is a top view of the utility model;

FIG. 4 is a cross-sectional view of the present utility model.

DETAILED DESCRIPTION

As shown in Figures 1-4, the utility model discloses a stator connection structure of an axial flux motor, including a plurality of stator winding modules arranged along the circumferential direction. The number of stator winding modules is set by those skilled in the art according to actual needs. This embodiment takes nine stator winding modules as an example to specifically illustrate the technical solution of this embodiment.

The nine stator winding modules are U1, V1, W1, U2, V2, W2, U3, V3, and W3, respectively. The stator winding modules all include an iron core body 1.1, on which a coil winding 1.2 is wound, and an annular collector ring 2 is arranged in the stator winding module. The collector ring 2 includes an insulating ring 2.1. The coil winding 1.2 of the stator winding module is electrically connected via a first conductor 2.2 located on the inner wall of the insulating ring 2.1 and a second conductor 2.3 located on the outer wall.

The coil windings 1.2 are respectively provided with two wire ends, one of which is located on the outside and is used to connect the power supply. The other wire end of the stator winding modules U1, V1, W1 and the two wire ends of the stator winding modules U2, V2, W2, U3, V3, W3 are respectively connected to a first conductor 2.1 located at the top of the inner wall of the insulating ring 2.1. The first conductors 2.1 are arranged at intervals. A positioning groove 2.11 with a groove width matching the wire end diameter of the coil winding 1.2 is provided in the middle of the upper end of the first conductor 2.1. The positioning groove 2.11 passes through the insulating ring 2.1 and has an opening at the upper end. The wire end of the coil winding 1.2 is inserted into the positioning groove 2.11 of the corresponding first conductor 2.2 through the opening to achieve electrical connection. Furthermore, to ensure reliable connection, the wire end and the corresponding first conductor 2.2 are simultaneously connected by soldering.

The first conductor 2.2 realizes electrical connection between the coil windings 1.2 respectively through the second conductor 2.3 located on the outer wall of the insulating ring 2.1. Specifically, a wire end of the stator winding module U1 is electrically connected to a wire end of the stator winding module U2 through the second conductor 2.3 (the second conductor pointed to in Figure 1), and the first conductor 2.2 and the corresponding second conductor 2.3 are connected through the conductive ring 3. The conductive ring 3 is arranged in a circular hole that penetrates the insulating ring 2.1 and the corresponding first conductor 2.2 and second conductor 2.3.

As a further explanation of this embodiment, the coil windings 1.2 are connected in existing ways such as star and triangle, which belongs to the prior art and will not be described in detail here.

The utility model realizes the connection between the stator winding modules through the merge ring 2, omits the insulating glue sealing in the prior art, improves the heat dissipation effect of the motor, reduces the diameter and volume of the motor, simplifies the product structure, and improves the assembly efficiency of the product.

As a further improvement of this embodiment, the iron core body 1.1 includes a magnetic core 1.11, with pole shoes 1.12 connected at both ends of the magnetic core 1.11, and the pole shoes 1.12 protrude outward around the coil winding 1.2. The second conductor 2.3 is arranged between the pole shoes 1.12 of the iron core body 1.1 and is arranged with a gap between the coil winding 1.2. The outer wall curvature of the insulating ring 2.1 is consistent with the inner wall curvature of the pole shoe 1.12, and they fit together, so that the radial position of the iron core body 1.1 is positioned by the insulating ring.

Claims (7)

1. A stator connection structure of an axial flux motor, comprising a plurality of stator winding modules arranged in a circumferential direction, wherein the stator winding module comprises an iron core body, coil windings are wound on the iron core body, and the coil windings are electrically connected to each other, and is characterized in that: an annular collector ring is arranged in the iron core body, the collector ring comprises an insulating ring, a conductor is arranged on the insulating ring, and the coil windings are electrically connected to each other through the conductor arranged on the insulating ring. 2. A stator connection structure of an axial flux motor according to claim 1, characterized in that the conductor is arranged on the inner wall and/or the outer wall of the insulating ring. 3. A stator connection structure of an axial flux motor according to claim 2, characterized in that: the conductor is arranged on the inner wall and the outer wall of the insulating ring at the same time, and the conductor located on the inner wall of the insulating ring realizes electrical connection between the coil windings through the conductor located on the outer wall of the insulating ring. 4. A stator connection structure of an axial flux motor according to claim 3, characterized in that: the conductor located on the inner wall of the insulating ring is connected to the corresponding conductor located on the outer wall through a conductive ring, and the conductive ring is arranged in a circular hole that passes through the insulating ring and the corresponding two conductors. 5. A stator connection structure of an axial flux motor according to claim 4, characterized in that: the coil windings are each provided with two wire ends, the coil windings are contacted and connected with part of the conductor through the wire ends, the conductor contacted and connected with the wire ends of the coil windings is arranged on the upper part of the inner wall of the insulating ring, and a positioning groove is arranged in the middle of the upper end of the conductor located on the inner wall of the insulating ring, the positioning groove passes through the insulating ring at the same time, and the upper end is an opening, and the wire ends of the coil windings are inserted into the positioning groove through the opening; the conductor that is not contacted and connected with the wire ends is arranged on the outer wall of the insulating ring. 6. A stator connection structure of an axial flux motor according to claim 4, characterized in that: the iron core body includes a magnetic core, pole shoes are connected to both ends of the magnetic core, the pole shoes protrude outward around the coil winding and are gap-matched with the coil winding, and the conductor arranged on the outer wall of the insulating ring is arranged between the pole shoes of the iron core body. 7. A stator connection structure of an axial flux motor according to claim 5, characterized in that the curvature of the outer wall of the insulating ring is consistent with the curvature of the inner wall of the pole shoe, and they fit each other, and the radial position of the core body is positioned by the collector ring.