Stator coil of permanent magnet direct drive hub motor

Abstract

The utility model relates to the technical field of motor coils, in particular to a permanent magnet direct drive hub motor stator coil, which comprises an annular stator iron core, a plurality of coil supports and coil windings, the coil supports are mounted on the stator iron core in a circumferential array manner, the coil windings are wound on the coil supports, and the coil supports are detachably mounted on the circumferential surface of the stator iron core. And a plurality of radiating fins are arranged on the side wall, far away from the coil bracket, of the stator core at equal intervals. By arranging the plurality of heat dissipation fins on the circumferential wall of the stator core and installing the plurality of coil supports on the stator core, heat can be rapidly conducted out, the heat dissipation effect is good, by arranging the slots and the check rings, the coil supports are inserted into the slots, the coil supports can be limited through the check rings, disassembly and assembly are convenient and rapid, and meanwhile, a cable can be conveniently limited.

Description

Technical Field

[0001] The utility model relates to the technical field of motor coils, in particular to a stator coil of a permanent magnet direct-drive hub motor. Background Art

[0002] The permanent magnet direct drive hub motor is a motor designed by integrating the vehicle's power system, transmission system and brake system. It has the advantages of omitting a large number of transmission components, making the vehicle structure simpler and realizing a variety of complex driving methods. The coil is composed of a stator core, a coil support and a coil winding.

[0003] In the Chinese Patent Literature Library, a patent with authorization announcement number CN 217769659U discloses a high-heat dissipation magnetic motor coil for motorcycles. The heat dissipation effect of the coil is improved by setting a heat dissipation sticker and an air guide plate. During assembly, the heat dissipation sticker is installed on both sides of the winding column to limit the winding column, making it impossible to quickly export the heat of the coil, resulting in poor heat dissipation effect. Summary of the invention

[0004] The utility model aims to provide a permanent magnet direct drive hub motor stator coil to solve the problems raised in the above background technology.

[0005] To achieve the above-mentioned purpose, the utility model provides the following technical solution: a stator coil of a permanent magnet direct-drive hub motor, comprising an annular stator core, a plurality of coil supports mounted on the stator core in a circumferential array, and a coil winding wound on the coil support, wherein the coil support is detachably mounted on the circumferential surface of the stator core, and a plurality of heat dissipation fins are arranged at equal intervals on the side wall of the stator core away from the coil support.

[0006] Furthermore, a plurality of slots corresponding to the coil supports are arranged on the outer circumferential surface of the stator core, and the coil support includes a winding section and plug-in blocks and a limit portion respectively fixed at both ends of the winding section in the length direction, and the plug-in blocks and the slots match each other.

[0007] Furthermore, the slot is a T-shaped slot arranged along and parallel to the axial direction of the stator core, one end of the slot is provided with an opening and the other end is sealed, and the stator core is provided with a retaining ring near the opening end of the slot, and the retaining ring is fixedly connected to the stator core by bolts.

[0008] Furthermore, the retaining ring is adjustably connected to the stator core via a slide rail, and the retaining ring is located on the inner side of the plug-in block. The outer circumference of the retaining ring is provided with a plurality of baffles corresponding to the coil brackets one by one, which are used to limit the coil bracket.

[0009] Furthermore, the heat dissipation fins are of an arc-shaped structure.

[0010] Furthermore, one end of the stator core is provided with a plurality of slots for fixing cables.

[0011] Compared with the prior art, the beneficial effects of the utility model are:

[0012] By arranging a number of heat dissipation fins on the peripheral wall of the stator core and installing a number of coil brackets on the stator core, the heat can be quickly conducted out and the heat dissipation effect is good;

[0013] By setting the slot and the retaining ring, the coil bracket is inserted into the slot, and the retaining ring can be used to limit the position of the coil bracket, making disassembly and assembly convenient and quick;

[0014] By setting the card slot, the cable can be clamped and limited to facilitate wiring. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] Figure 1 This is a schematic diagram of the front three-dimensional structure of the utility model;

[0016] Figure 2 This is an explosion diagram of the utility model;

[0017] Figure 3 It is a schematic diagram of the three-dimensional structure of the back side of the utility model.

[0018] In the figure: 1. stator core; 101. slot; 2. coil bracket; 201. winding section; 202. plug-in block; 203. limit part; 3. coil winding; 4. retaining ring; 401. baffle; 402. mounting hole; 5. heat dissipation fin; 6. slot. DETAILED DESCRIPTION

[0019] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. In the description of the utility model, it should be noted that, unless otherwise clearly specified and limited, the terms "installation", "connection", "connection", and "setting" should be understood in a broad sense, for example, it can be a fixed connection or a detachable connection; it can be a mechanical connection or an electrical connection; it can be directly connected or indirectly connected through an intermediate medium, or it can be the internal communication of two components. For ordinary technicians in this field, the specific meanings of the above terms in the utility model can be understood in specific circumstances. In addition, in the description of the utility model, it should be understood that the directions or positional relationships indicated by the terms "upper", "lower", "front", "back", "left", "right", "top", "bottom", "inside", "outside", etc. are based on the directions or positional relationships shown in the drawings, which are only for the convenience of describing the utility model and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific direction, be constructed and operated in a specific direction, and therefore cannot be understood as a limitation on the utility model.

[0020] Example 1, please refer to Figure 1-3 The utility model provides an embodiment: a permanent magnet direct drive hub motor stator coil, comprising a ring-shaped stator core 1, a plurality of coil supports 2 mounted on the stator core 1 in a circumferential array, and a coil winding 3 wound on the coil support 2. The coil winding 3 is wound on the coil support 2, and current is passed through to generate magnetism, thereby achieving attraction or repulsion of the permanent magnet rotor, driving the rotor to rotate. The coil support 2 is detachably mounted on the circumferential surface of the stator core 1. In this embodiment, the coil support 2 is arranged on the outer circumference of the stator core 1. The surface of the stator core 1 corresponds to an inner rotor motor. The coil support 2 can also be arranged on the inner circumference of the stator core 1 as needed. The corresponding motor is an outer rotor motor. The outer circumference of the stator core 1 is provided with a plurality of slots 101 corresponding to the coil support 2. The coil support 2 includes a winding segment 201 and plug-in blocks 202 and a limiting portion 203 respectively fixed at both ends of the length direction of the winding segment 201. The plug-in block 202 matches the slot 101, and the limiting portion 203 is used to block and limit the coil winding 3.

[0021] The slot 101 is a T-shaped slot arranged along the axis parallel to the stator core 1. One end of the slot 101 is provided with an opening and the other end is sealed. A retaining ring 4 is provided near the open end of the slot 101 on the stator core 1, and the retaining ring 4 is fixedly connected to the stator core 1 by bolts. During assembly, each plug-in block 202 is correspondingly inserted into the slot 101, and then the retaining ring 4 is fixed to one end of the stator core 1 by bolts, and each coil bracket 2 is limited and fixed. Specifically, a plurality of mutually matching mounting holes 402 are provided on the retaining ring 4 and the stator core 1, and they can be fixed by passing bolts through the mounting holes 402, thereby improving assembly efficiency.

[0022] A plurality of heat dissipation fins 5 are arranged at equal intervals on the side wall of the stator core 1 away from the coil support 2. The heat dissipation fins 5 may be an arc-shaped structure, which can increase the contact area with the air and achieve a good heat dissipation effect.

[0023] Furthermore, one end of the stator core 1 is provided with a plurality of slots 6 for fixing cables. Specifically, the number of coil supports 2 is an even number, and the coil windings 3 on the two coil supports 2 at the radial ends of the stator core 1 are connected end to end. In this embodiment, 6 coil supports 2 are provided, and the slots 6 can clamp and limit the cables to avoid cable clutter.

[0024] Embodiment 2. The difference between this embodiment and embodiment 1 is that the retaining ring 4 is adjustably connected to the stator core 1 through an annular slide rail, and the retaining ring 4 is located on the inner side of the plug-in block 202. The outer circumference of the retaining ring 4 is provided with a plurality of baffles 401 corresponding to the coil bracket 2 one by one, which are used to limit the coil bracket 2. The retaining ring 4 is rotatably arranged at one end of the stator core 1. When the coil bracket 2 needs to be disassembled and assembled, the retaining ring 4 is rotated to stagger the baffle 401 and the plug-in block 202. After the coil bracket 2 is disassembled and assembled, the baffle 401 is rotated to overlap the plug-in block 202. The retaining ring 4 is fixedly connected to the stator core 1 by bolts, which can reduce the number of fixing bolts and improve the assembly speed.

[0025] It is obvious to those skilled in the art that the present invention is not limited to the details of the exemplary embodiments described above, and that the present invention can be implemented in other specific forms without departing from the spirit or essential features of the present invention. Therefore, the embodiments should be regarded as exemplary and non-restrictive from any point of view, and the scope of the present invention is defined by the appended claims rather than the above description, and it is intended that all changes falling within the meaning and scope of the equivalent elements of the claims be included in the present invention. Any reference numeral in a claim should not be regarded as limiting the claim to which it relates.

Claims

1. A permanent magnet direct drive hub motor stator coil, comprising an annular stator core (1), a plurality of coil supports (2) mounted on the stator core (1) in a circumferential array, and a coil winding (3) wound on the coil support (2), characterized in that: The coil support (2) is detachably mounted on the circumferential surface of the stator core (1), and a plurality of heat dissipation fins (5) are arranged at equal intervals on a side wall of the stator core (1) away from the coil support (2).

2. The stator coil of the permanent magnet direct drive hub motor according to claim 1 is characterized in that: A plurality of slots (101) corresponding one to one with the coil support (2) are arranged on the outer circumferential surface of the stator core (1); the coil support (2) comprises a winding section (201) and a plug-in block (202) and a stopper (203) respectively fixed at two ends of the winding section (201) in the length direction; the plug-in block (202) and the slots (101) match each other.

3. The stator coil of the permanent magnet direct drive hub motor according to claim 2 is characterized in that: The slot (101) is a T-shaped slot arranged along an axial direction parallel to the stator core (1); one end of the slot (101) is provided with an opening and the other end is sealed; a retaining ring (4) is provided near the open end of the slot (101) of the stator core (1), and the retaining ring (4) is fixedly connected to the stator core (1) by bolts.

4. The stator coil of the permanent magnet direct drive hub motor according to claim 3 is characterized in that: The retaining ring (4) is adjustably connected to the stator core (1) via a slide rail, and the retaining ring (4) is located on the inner side of the plug-in block (202). The outer circumference of the retaining ring (4) is provided with a plurality of baffles (401) corresponding one-to-one to the coil support (2) for limiting the position of the coil support (2).

5. The stator coil of the permanent magnet direct drive hub motor according to claim 1, characterized in that: The heat dissipation fins (5) are of an arc-shaped structure.

6. The stator coil of the permanent magnet direct drive hub motor according to claim 1, characterized in that: One end of the stator core (1) is provided with a plurality of slots (6) for fixing cables.

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