Axial magnetic flux disc type motor stator core with insulation structure and disc type motor

Abstract

The utility model discloses an axial magnetic flux disc type motor stator iron core with an insulation structure and a disc type motor, comprising a stator iron core and insulation frameworks, each inner groove insulation framework comprises a left side wall, a right side wall, an inner baffle plate, an upper baffle plate and a bottom baffle plate, one end of the left side wall and one end of the right side wall are respectively connected with two sides of the inner baffle plate to form a V-shaped layout, the inner slot insulation framework is sleeved on the tooth part by taking the tooth part of the stator core as a reference; each outer groove insulation framework comprises two outer baffle plates and a groove insulation part which radially protrudes inwards from the position between the two outer baffle plates, the outer groove insulation framework takes a wire embedding groove of the stator iron core as a reference, the groove insulation part is embedded into the wire embedding groove to insulate the outer end of the wire embedding groove, and the outer baffle plates are attached to the outer side wall of the tooth part; the structure can be applied to an open slot, a closed slot or a semi-closed slot, the inner slot insulation framework and the outer slot insulation framework form nesting and have an interlocking function, it is guaranteed that the whole framework cannot move, the technology is simple, installation is convenient, the creepage distance is easy to guarantee, and reliability is greatly improved.

Description

Technical field:

[0001] The utility model relates to an axial magnetic flux disc-type motor stator iron core with an insulating structure and a disc-type motor. Background technology:

[0002] Patent number: 202121854202.4, patent name: A utility model patent for a stator skeleton coil assembly of a disc motor. Its main content provides a stator skeleton coil assembly of a disc motor, including a skeleton and a coil. The skeleton includes a tube body and a first rib. One end of the tube body extends outward along the periphery to form the first rib. Two limit platforms are provided on the first rib. The limit platform is located on the side of the first baffle away from the tube body. The coil has two outlet heads. The coil is wound outside the tube body, and the two outlet heads are positioned on the limit platform. It can be produced using automated equipment to avoid the defects of short time and poor consistency caused by manual assembly, and the outlet head is positioned by the limit platform so that the outlet head can be subsequently welded and fixed to the circuit board.

[0003] However, the patented structure is only suitable for the stator core of an open slot axial flux motor. The so-called open slot means that the slot of the wire embedding slot is completely open and unobstructed. The patent number is 200980137807.7 and the patent name is a winding insulation device for an axial flux motor, which also adopts a similar insulation structure.

[0004] The structure of the wire embedding slot of the stator core of the axial flux motor using an open slot and an insulating frame has the following disadvantages:

[0005] 1. The structure is only applicable to the stator core of the open slot axial flux motor. The insulating frame with the coil is inserted into the teeth of the stator core from the air gap side. If the tooth top is wider than the other parts of the tooth, it cannot be inserted, that is, it is not suitable for the slot of the wire embedding slot to adopt the closed slot structure;

[0006] 2. After the slot insulation frame is inserted into the core teeth, there is no positioning structure in the axial direction. There is a risk of the slot insulation frame moving outward, reducing the air gap and even causing the motor to get stuck;

[0007] 3. The insulating skeleton frame does not provide protection or other treatment for the yoke, and the insulation and withstand voltage of the bridge wire at the yoke are not processed, resulting in many problems.

[0008] The insulation scheme of the wire embedding slot of the stator core of the axial flux motor adopts a closed slot structure, which usually adopts the method of placing slot paper in the wire embedding slot. The process is complicated and the installation is troublesome. It is not suitable for the needs of automated production, and the creepage distance is difficult to guarantee, and the reliability is low. Summary of the invention:

[0009] The utility model aims to provide an axial flux disc motor stator core and a disc motor with an insulating structure, so as to solve the technical problems that in the prior art, the slots of the wire embedding slots of the stator core of the axial flux motor adopt a closed slot structure for insulation, and slot paper is usually placed in the wire embedding slots, which has a complex process, troublesome installation, is not suitable for the needs of automated production, and is difficult to ensure the creepage distance and has low reliability.

[0010] The purpose of this utility model is achieved through the following technical solutions:

[0011] An axial flux disk motor stator core with an insulating structure comprises a stator core and an insulating frame, wherein the stator core comprises an annular yoke and a plurality of teeth protruding axially from the top surface of the annular yoke, wherein the plurality of teeth are evenly spaced along the circumferential direction, and a wire embedding groove is formed between two adjacent teeth, and an opening is arranged at the top of the wire embedding groove, and the teeth and the wire embedding groove are arranged extending radially, and the insulating frame comprises a plurality of inner slot insulating frames and a plurality of outer slot insulating frames, wherein:

[0012] Each inner slot insulating frame includes a left side wall, a right side wall, an inner baffle, an upper baffle and a bottom baffle. One end of the left side wall and one end of the right side wall are respectively connected to the two sides of the inner baffle to form a V-shaped layout. The upper baffle and the bottom baffle are respectively located on the left side wall, the right side wall and the top and bottom of the inner baffle. The inner slot insulating frame is sleeved on the tooth part with the tooth part of the stator core as the reference; the left side wall and the right side wall are respectively attached to the left side wall and the right side wall of the tooth part, and the upper baffle and the bottom baffle are embedded in the bottom and top of the wire embedding groove; the inner baffle is attached to the inner side wall of the tooth part;

[0013] Each outer slot insulation frame includes two outer baffles and a slot insulation portion radially protruding inward from between the two outer baffles. The outer slot insulation frame is based on the wire embedding slot of the stator core. The slot insulation portion is nested in the wire embedding slot to insulate the outer end of the wire embedding slot. The outer baffle is attached to the outer wall of the tooth portion.

[0014] The inner end of the wire trough is insulated by a left side wall, a right side wall, an upper baffle and a bottom baffle;

[0015] A first step stop is provided at the end of the slot insulating portion, and a second step stop is provided at one end where the left side wall, the right side wall, the upper baffle plate and the bottom baffle plate are connected to the slot insulating portion, and the first step stop and the second step stop are nested and overlapped with each other.

[0016] The third step stop or the fourth step stop is arranged on both sides of the above-mentioned outer baffle plate, and the third step stop and the fourth step stop of the outer baffle plate at the contact point between two adjacent outer groove insulation frames are nested and overlapped with each other.

[0017] The outer baffle plate is provided with a yoke insulating portion extending downward, and the yoke insulating portion is attached to the outer side surface of the annular yoke portion.

[0018] A plurality of partition plates are arranged at intervals from top to bottom on the yoke insulating part for routing the bridge wires of the coil winding.

[0019] The plurality of outer slot insulation frames are integrally injection molded.

[0020] A disc motor comprises a stator assembly and a rotor assembly, wherein the stator assembly adopts the above-mentioned axial flux disc motor stator core with an insulating structure.

[0021] Compared with the prior art, the utility model has the following effects:

[0022] Effect 1: The utility model includes a stator core and an insulating skeleton, and the insulating skeleton includes a plurality of inner slot insulating skeletons and a plurality of outer slot insulating skeletons. The inner slot insulating skeleton is installed on the teeth of the stator core from the inside of the stator core with the teeth as the reference, and the outer slot insulating skeleton is inserted into the wire embedding groove of the stator core from the outside with the wire embedding groove as the reference. The two cooperate with each other to assemble and form a complete stator core insulation system. The insulating structure can be applied to open slots, closed slots or semi-closed slots, and has a wide range of applications. The inner slot insulating skeleton and the outer slot insulating skeleton form a nested interlocking effect to ensure that the skeleton as a whole cannot move, the process is simple, the installation is convenient, and it meets the needs of automated production. The creepage distance is easy to ensure, and the reliability is greatly improved.

[0023] Effect 2: A number of partition plates are arranged from top to bottom on the yoke insulation part of the inner and outer slot insulation framework for routing the bridge wires of the coil winding to increase insulation.

[0024] Effect 3: The inner slot insulation frame and the outer slot insulation frame are respectively provided with matching step stoppers, which cover and match the step stoppers to prevent the stator core from being exposed, increase the creepage distance, and reduce the risk of leakage;

[0025] Effect 4: The third step stop or the fourth step stop is set on both sides of the outer baffle, and the third step stop and the fourth step stop of the outer baffle where the two adjacent outer groove insulation frames are in contact are nested and overlapped with each other, which is conducive to mechanized assembly. Description of the drawings:

[0026] Figure 1 It is a three-dimensional diagram of an insulation structure of a stator core according to an embodiment of the utility model at one angle;

[0027] Figure 2 It is a three-dimensional diagram from another angle of the insulation structure of the stator core in the embodiment of the utility model;

[0028] Figure 3 This is an exploded view of the insulation structure of a stator core in an embodiment of the utility model;

[0029] Figure 4 This is a front view of the insulation structure of a stator core according to an embodiment of the utility model;

[0030] Figure 5 yes Figure 4 AA section view;

[0031] Figure 6 yes Figure 5 A partial enlarged view of part B;

[0032] Figure 7 yes Figure 6 A partial enlarged view of part C in the middle;

[0033] Figure 8 yes Figure 6 A partial enlarged view of part D in the middle;

[0034] Fig. 9 yes Figure 6 A partial enlarged view of part E in the middle;

[0035] Fig.10 This is a three-dimensional view of an inner slot insulation frame and two outer slot insulation frames after installation in Example 1 of the utility model at one angle;

[0036] Fig.11 It is a three-dimensional view from another angle after one inner slot insulating frame and two outer slot insulating frames are installed in Embodiment 1 of the utility model;

[0037] Fig.12 yes Fig.11 Exploded diagram of

[0038] Fig.13 yes Fig.12 A further breakdown of the diagram;

[0039] Fig.14 It is a schematic structural diagram of the integrated injection molding of multiple outer slot insulation frames of the utility model. Specific implementation method:

[0040] The present invention will be further described in detail below through specific embodiments in conjunction with the accompanying drawings.

[0041] Embodiment 1: Figures 1 to 13As shown, the present embodiment provides an axial flux disk motor stator core with an insulating structure, comprising a stator core 1 and an insulating frame 2, wherein the stator core 1 comprises an annular yoke 11 and a plurality of teeth 12 protruding axially from the top surface of the annular yoke 11, wherein the plurality of teeth 12 are evenly spaced along the circumferential direction, and a wire embedding groove 13 is formed between two adjacent teeth 12, wherein an axial opening 131 is provided at the top of the wire embedding groove 13, and the teeth 12 and the wire embedding groove 13 are arranged to extend radially, and the insulating frame 2 comprises a plurality of inner slot insulating frames 21 and a plurality of outer slot insulating frames 22, wherein:

[0042] Each inner slot insulating skeleton 21 includes a left side wall 211, a right side wall 212, an inner baffle 213, an upper baffle 214 and a bottom baffle 215. One end of the left side wall 211 and one end of the right side wall 212 are respectively connected to the two sides of the inner baffle 213 to form a V-shaped layout. The upper baffle 214 and the bottom baffle 215 are respectively located at the top and bottom of the left side wall 211, the right side wall 212 and the inner baffle 213. The inner slot insulating skeleton 21 is sleeved on the tooth portion 12 based on the tooth portion 12 of the stator core 1; the left side wall 211 and the right side wall 212 are respectively attached to the left side wall and the right side wall of the tooth portion 12, the upper baffle 214 and the bottom baffle 215 are embedded in the bottom and top of the wire embedding groove 13; the inner baffle 213 is attached to the inner side wall of the tooth portion 12;

[0043] Each outer slot insulating skeleton 22 includes two outer baffles 221 and a slot insulating portion 222 radially protruding inwardly from between the two outer baffles 221. The outer slot insulating skeleton 22 is based on the wire embedding slot 13 of the stator core 1. The slot insulating portion 222 is nested in the wire embedding slot 13 to insulate the outer end of the wire embedding slot 13. The outer baffle 221 is attached to the outer side wall of the tooth portion 12.

[0044] The inner end of the same wire embedding groove 13 is embedded in the left side wall 211, the right side wall 212, the upper baffle plate 214 and the bottom baffle plate 215 for insulation;

[0045] The end of the slot insulating portion 222 is provided with a first step stop 223, and the left side wall 211, the right side wall 212, the upper baffle 214 and the bottom baffle 215 are provided with a second step stop 216 at one end connected to the slot insulating portion 222. The first step stop 223 and the second step stop 216 are nested and overlapped with each other, thereby preventing the stator core from being exposed, increasing the creepage distance and reducing the risk of leakage.

[0046] The insulation structure of the utility model can be applied to open slots, closed slots or semi-closed slots, and has a wide range of applications. The inner slot insulation frame and the outer slot insulation frame are nested and interlocked to ensure that the frame as a whole cannot move. The process is simple, the installation is convenient, and it meets the needs of automated production. The creepage distance is easy to ensure, and the reliability is greatly improved.

[0047] The third step stop 224 or the fourth step stop 227 is arranged on both sides of the outer baffle plate 221, and the third step stop 224 and the fourth step stop 227 of the outer baffle plate 221 at the contact point of two adjacent outer slot insulation frames 22 are nested and overlapped with each other, thereby preventing the stator core from being exposed, increasing the creepage distance, and reducing the risk of leakage.

[0048] The outer baffle plate 221 has a yoke insulating portion 225 extending downwardly, and the yoke insulating portion 225 is attached to the outer side surface of the annular yoke portion 11 to increase the insulation area.

[0049] A plurality of partition plates 226 are arranged at intervals from top to bottom on the yoke insulating portion 225 for routing the bridge wires of the coil windings and for increasing insulation.

[0050] like Fig.14 As shown, multiple outer slot insulation frames 22 are integrally injection molded to improve installation efficiency.

[0051] Embodiment 2:

[0052] A disc motor comprises a stator assembly and a rotor assembly, wherein the stator assembly adopts an axial magnetic flux disc motor stator core with an insulating structure as described in the first embodiment.

[0053] The above embodiments are preferred implementation modes of the present invention, but the implementation modes of the present invention are not limited thereto. Any other changes, modifications, substitutions, combinations, and simplifications made without departing from the spirit and principle of the present invention are equivalent replacement methods and are included in the protection scope of the present invention.

Claims

1. An axial flux disc motor stator core with an insulating structure, comprising a stator core (1) and an insulating frame (2), the stator core (1) comprising an annular yoke (11) and a plurality of teeth (12) protruding axially from the top surface of the annular yoke (11), the plurality of teeth (12) being evenly spaced and distributed along the circumferential direction, a wire embedding groove (13) being formed between two adjacent teeth (12), an axial opening (131) being provided at the top of the wire embedding groove (13), the teeth (12) and the wire embedding groove (13) extending radially, characterized in that: The insulating frame (2) comprises a plurality of inner slot insulating frames (21) and a plurality of outer slot insulating frames (22), wherein: Each inner slot insulating frame (21) comprises a left side wall (211), a right side wall (212), an inner baffle (213), an upper baffle (214) and a bottom baffle (215); one end of the left side wall (211) and one end of the right side wall (212) are respectively connected to two sides of the inner baffle (213) to form a V-shaped layout; the upper baffle (214) and the bottom baffle (215) are respectively located on the left side wall (211), the right side wall (212), The top and bottom of the inner baffle (213), the inner slot insulating frame (21) is sleeved on the tooth portion (12) with the tooth portion (12) of the stator core (1) as a reference; the left side wall (211) and the right side wall (212) are respectively attached to the left side wall and the right side wall of the tooth portion (12); the upper baffle (214) and the bottom baffle (215) are embedded in the bottom and top of the wire embedding groove (13); the inner baffle (213) is attached to the inner side wall of the tooth portion (12); Each outer slot insulating skeleton (22) comprises two outer baffles (221) and a slot insulating portion (222) protruding radially inwardly from between the two outer baffles (221); the outer slot insulating skeleton (22) is based on the wire embedding slot (13) of the stator core (1); the slot insulating portion (222) is nested in the wire embedding slot (13) to insulate the outer end of the wire embedding slot (13); and the outer baffle (221) is attached to the outer side wall of the tooth portion (12); The inner end of the same wire embedding groove (13) is embedded in the left side wall (211), the right side wall (212), the upper baffle plate (214) and the bottom baffle plate (215) for insulation; A first step stop (223) is provided at the end of the slot insulating portion (222); a second step stop (216) is provided at one end where the left side wall (211), the right side wall (212), the upper baffle (214) and the bottom baffle (215) are connected to the slot insulating portion (222); the first step stop (223) and the second step stop (216) are nested and overlapped with each other.

2. The axial flux disc motor stator core with an insulation structure according to claim 1, characterized in that: A third step stop (224) or a fourth step stop (227) is provided on both sides of the outer baffle plate (221), and the third step stop (224) and the fourth step stop (227) of the outer baffle plate (221) at the contact point of two adjacent outer slot insulation frames (22) are nested and overlapped with each other.

3. The axial flux disc motor stator core with an insulation structure according to claim 1 or 2, characterized in that: The outer baffle (221) has a yoke insulating portion (225) extending downward, and the yoke insulating portion (225) is attached to the outer side surface of the annular yoke portion (11).

4. The axial flux disc motor stator core with an insulation structure according to claim 3, characterized in that: A plurality of partition plates (226) are arranged on the yoke insulating portion (225) from top to bottom at intervals for routing the bridge wires of the coil winding.

5. The axial flux disc motor stator core with an insulation structure according to claim 4, characterized in that: A plurality of outer slot insulating frames (22) are integrally injection molded.

6. A disc motor, comprising a stator assembly and a rotor assembly, characterized in that: The stator assembly adopts the axial flux disc motor stator core with an insulation structure as described in any one of claims 1 to 5.

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