Winding-free motor coil structure and motor thereof

Abstract

The utility model relates to a winding-free motor coil structure and a motor thereof, the winding-free motor coil structure comprises a plurality of layers of stacked circuit boards, each layer of circuit board is provided with a spiral coil layer and an insulating layer located outside the coil, the coil layer is provided with a connecting bonding pad located at the peripheral end part of the circuit board, and the insulating layer is provided with an insulating layer located outside the coil layer. The inner side end portions, located on the circuit boards, of the coils are provided with via holes, the connecting bonding pads between the adjacent circuit boards are connected with each other, and the via holes between the adjacent circuit boards are connected with each other. According to the winding-free motor coil structure and the motor thereof disclosed by the utility model, the electrical connection of the coil is realized through the connecting bonding pad and the via hole, the complex process of traditional enameled wire winding is avoided, the production cost is reduced, and the production efficiency is improved.

Description

TECHNICAL FIELD

[0001] The utility model relates to motor parts and motor field especially relates to a motor coil structure of winding -free and motor thereof. BACKGROUND

[0002] In the existing motor technology, small motors such as servo motors and brushless motors usually adopt the structure of winding coils on silicon steel sheets. Although the coil of the silicon steel sheet structure has certain advantages in performance, it is large in size and heavy in weight, and the main reason is that the weight of the motor is concentrated in the iron core part. In the application scenarios of humanoid robots, unmanned aerial vehicles and industrial robots, higher requirements for the lightweight and miniaturization of the motor are put forward. For example, a humanoid robot is usually composed of dozens of joint shafts, if the weight of each motor reaches 500 grams, the total weight of the motors of the whole humanoid robot will be close to dozens of kilograms, which greatly limits the flexibility and maneuverability of the robot.

[0003] In addition, although the coreless linear motor reduces the weight to a certain extent, the winding process of its coil still has many problems. At present, the coil of the coreless linear motor needs to be wound first and then formed and glued, and since the ABC three-phase winding is crossed, only an I-shaped structure can be adopted. This process is not only complex, but also prone to errors during manufacturing, resulting in low production efficiency and increased cost. At the same time, this structure also limits the further miniaturization and lightweight of the motor.

[0004] Therefore, the motor structure in the prior art has obvious deficiencies in meeting the requirements of lightweight and miniaturization, especially in the application scenarios of unmanned aerial vehicles, humanoid robots and industrial robots, which have very high requirements for the performance and weight of the motor. SUMMARY

[0005] The utility model provides a winding -free motor coil structure and motor thereof, it aims at at least one of the prior art existing technical problems.

[0006] The technical scheme of the utility model is a winding-free motor coil structure, which comprises: a plurality of stacked circuit boards, each circuit board is provided with a spiral coil layer and an insulating layer located outside the coil, the coil layer is provided with a connection pad at the peripheral end of the circuit board, and the coil is provided with a via hole at the inner end of the circuit board, wherein the connection pads of adjacent circuit boards are connected to each other, and the via holes of adjacent circuit boards are connected to each other.

[0007] Further, the water running layer plate is arranged in the multilayer circuit board, the heat dissipation channel is arranged on the water running layer plate, the shape of the heat dissipation channel corresponds to the coil layer, and the water inlet and the water outlet are arranged in the multilayer insulating layer and are communicated with each other.

[0008] Further, the material of the circuit board comprises an insulating material.

[0009] Further, the coil layer is arranged on each of the circuit boards.

[0010] Further, the coil layer is an etching circuit or a deposited circuit on the circuit board.

[0011] Further, the temperature sensor is arranged in the multilayer circuit board.

[0012] A motor comprises the wire-free motor coil structure, a motor body, and the wire-free motor coil structure is arranged in the motor body.

[0013] Further, the motor body comprises an axial motor, a linear motor and a straight cylinder motor.

[0014] The beneficial effects of the utility model include:

[0015] The wire-free motor coil structure and the motor adopt the multilayer stacked circuit board structure, realize the electrical connection of the coil through the connecting pads and the via holes, avoid the complex process of the traditional enameled wire winding, reduce the production cost, improve the production efficiency; in addition, the water running layer plate is arranged in the multilayer circuit board, the heat dissipation channel corresponds to the coil layer, the liquid medium or airflow circulation heat dissipation is realized through the water inlet and the water outlet, the motor working temperature is effectively reduced, and the power density and the operation efficiency of the motor are improved.

[0016] In addition, the additional aspects and advantages of the utility model will be partly given in the following description, partly will become obvious from the following description, or be understood through the practice of the utility model. BRIEF DESCRIPTION OF DRAWINGS

[0017] Figure 1 It is the overall schematic view of the wire-free motor coil structure according to the utility model embodiment.

[0018] Figure 2 It is the first surface detail schematic view of the circuit board according to the utility model embodiment.

[0019] Figure 3 It is the second surface detail schematic view of the circuit board according to the utility model embodiment.

[0020] Figure 4is an exploded schematic view of the motor coil structure without winding according to the embodiment of the utility model.

[0021] Figure 5 is a general schematic view of the linear motor according to the embodiment of the utility model.

[0022] Figure 6 is a general schematic view of the linear motor according to the embodiment of the utility model.

[0023] Figure 7 is a longitudinal section schematic view of the linear motor according to the embodiment of the utility model.

[0024] Figure 8 is a general schematic view of the axial motor according to the embodiment of the utility model.

[0025] Figure 9 is a longitudinal section schematic view of the axial motor according to the embodiment of the utility model. DETAILED DESCRIPTION

[0026] The concept, specific structure and generated technical effects of the utility model will be described clearly and completely in combination with the embodiments and the drawings, so as to fully understand the purpose, scheme and effect of the utility model. It should be noted that the embodiments in the present application and the features in the embodiments can be combined with each other without conflict.

[0027] It should be noted that, unless otherwise specified, when a certain feature is referred to as "fixed" or "connected" to another feature, it can be directly fixed or connected to the other feature, or indirectly fixed or connected to the other feature. In addition, the up, down, left, right, top, bottom and other descriptions used in the utility model are only relative to the mutual position relationship of the components of the utility model in the drawings.

[0028] In addition, unless otherwise defined, all technical and scientific terms used in the present application have the same meaning as understood by those skilled in the art. The terms used in the specification of the present application are only for describing specific embodiments, and are not intended to limit the utility model. The term "and / or" used herein includes any combination of one or more related listed items.

[0029] It should be understood that although the terms first, second, third, etc. may be used in the present disclosure to describe various elements, these elements should not be limited to these terms. These terms are only used to distinguish one type of element from another. For example, without departing from the scope of the present disclosure, a first element can also be referred to as a second element, and similarly, a second element can also be referred to as a first element.

[0030] REFERENCE Figures 1 to 4As shown in some embodiments, the utility model discloses a motor coil structure 30 of free winding, which comprises:

[0031] Referring to Figure 1 In combination Figures 2 to 3 As shown in the multilayer stacked circuit board 10, each layer of the circuit board 10 is provided with a spiral coil layer 11 and an insulating layer 12 outside the coil. The coil layer 11 is provided with a connection pad 13 at the peripheral end on the circuit board 10, and the coil is provided with a via hole 14 at the inner end on the circuit board 10. The connection pads 13 between adjacent circuit boards 10 are connected to each other, and the via holes 14 between adjacent circuit boards 10 are connected to each other, forming a complete coil winding. The motor coil structure of free winding uses printed circuit board technology to manufacture the coil, avoiding the complex process of traditional enameled wire winding and reducing the production cost; the printed circuit board manufacturing process can realize high-precision coil layout, improving the consistency and reliability of motor performance.

[0032] In addition, in some embodiments, the material of the circuit board 10 includes an insulating material, which effectively increases the flame resistance of the circuit board in the motor, and the insulating material as the main component of the circuit board can effectively isolate the electrical connection between different coil layers to prevent short circuit and leakage. This is particularly important in the multilayer stacked circuit board structure, because reliable insulation performance is needed between adjacent coil layers to ensure the safe operation of the motor.

[0033] Referring to Figure 1 In combination Figure 4 As shown, the multilayer circuit board 10 is provided with a water running layer 20, the water running layer 20 is provided with a heat dissipation channel 21, the shape of the heat dissipation channel 21 corresponds to the coil layer 11, and the multilayer insulating layer 12 is respectively provided with a water inlet 22 and a water outlet 23 in communication, and the two openings are used for heat dissipation circulation of liquid medium or gas flow. The water inlet 22 and the water outlet 23 are in communication with the heat dissipation channel 21. Figure 4 The water running layer 20 is arranged in the middle of the multilayer circuit board, and then the water inlet 22 and the water outlet 23 in the stacked state are used to communicate the heat dissipation liquid or gas flow medium into the heat dissipation channel, and the coil layer corresponding to the heat dissipation channel is cooled. The heat dissipation structure of the above-mentioned communicated water inlet 22, water outlet 23 and heat dissipation channel 21 carries away the heat generated by the coil through liquid or gas flow circulation, effectively reduces the working temperature of the motor, and improves the power density and operating efficiency of the motor; the heat dissipation channel is closely combined with the coil layer, without the need for additional heat dissipation devices, further reducing the size of the motor.

[0034] Referring to Figure 1 As shown, each of the circuit boards 10 is provided with more than one coil layer 11, and the multi-phase winding is realized by multilayer stacking, meeting the multi-phase operation requirements of, for example, linear motors.

[0035] In some embodiments, the coil layer 11 is an etched or deposited line on the circuit board 10. The etching and deposition process can achieve high-precision line manufacturing, ensuring the size, shape and spacing of the coil layer are highly consistent. Compared with the traditional winding process, this manufacturing method can avoid errors caused by manual or mechanical winding, thereby significantly improving the performance consistency and reliability of the motor coil. The temperature sensor is arranged in the multi-layer circuit board 10, which monitors the coil temperature in real time and ensures that the motor operates within a safe temperature range.

[0036] Referring to Figures 5 to 9 The disclosed motor includes the above-mentioned winding-free motor coil structure and a motor body, and the winding-free motor coil structure 30 is installed inside the motor body.

[0037] Specifically, the motor body includes an axial motor, a linear motor and a straight cylinder motor.

[0038] Referring to Figure 5 The linear motor embodiment shown includes a frame 41, magnets 42 arranged oppositely inside the frame, and a winding-free motor coil structure 30 arranged between the magnets 42.

[0039] Referring to Figures 6 to 7 The straight cylinder motor embodiment shown includes a first outer frame 53, first bearing covers 52 arranged at the openings of the two sides of the first outer frame, and a first middle shaft 51 arranged through the first bearing covers 52. The first outer frame 53 has a cavity, and the first magnetic pole 54 is inserted through the first middle shaft 51 in the cavity. The winding-free motor coil structure 30 is arranged between the first magnetic pole 54 and the first outer frame 53.

[0040] Referring to Figures 8 to 9 The axial motor embodiment shown includes a second outer frame 63, second bearing covers 62 arranged at the openings of the two sides of the second outer frame, and a second middle shaft 62 arranged through the second bearing covers 62. The second outer frame 63 has a cavity, and the second magnetic poles 64 arranged oppositely are inserted through the second middle shaft 62 in the cavity. The winding-free motor coil structure 30 is arranged between the second magnetic poles 64 and the second outer frame 63.

[0041] In summary, the winding-free motor coil structure described above can be designed into different shapes according to various types of motors on the market to adapt to different motor products.

[0042] The above merely describes preferred embodiments of the present application, and the present application is not limited to the above-described embodiments, as long as the same technical effects are achieved by the same means, and any modifications, equivalent replacements, improvements, etc. made within the spirit and principles of the present disclosure shall be included in the protection scope of the present disclosure. All shall belong to the protection scope of the present application. The technical solutions and / or embodiments within the protection scope of the present application can have various modifications and changes.

Claims

1. A free winding motor coil structure (30) characterized by, Comprising: A multi-layer stacked circuit board (10), each layer of the circuit board (10) is provided with a spiral coil layer (11) and an insulation layer (12) outside the coil, the coil layer (11) is provided with a connecting pad (13) at the peripheral end on the circuit board (10), and the coil is provided with a via (14) at the inner end on the circuit board (10), Wherein, the connecting pads (13) between adjacent circuit boards (10) are connected to each other, and the vias (14) between adjacent circuit boards (10) are connected to each other.

2. The non-winding motor coil structure (30) according to claim 1, characterized in that, A water running layer (20) is arranged in the multi-layer circuit board (10), the water running layer (20) is provided with a heat dissipation channel (21), the shape of the heat dissipation channel (21) corresponds to the coil layer (11), and the multi-layer insulation layer (12) is respectively provided with a water inlet (22) and a water outlet (23) that are communicated with each other, Wherein, the water inlet (22) and the water outlet (23) are respectively communicated with the heat dissipation channel (21).

3. The non-winding motor coil structure (30) according to claim 1, characterized in that, The material of the circuit board (10) comprises an insulating material.

4. The non-winding motor coil structure (30) according to claim 1, characterized in that, More than one coil layer (11) is arranged on each circuit board (10).

5. The non-winding motor coil structure (30) according to claim 1, characterized in that, The coil layer (11) on the circuit board (10) is an etched circuit or a deposited circuit.

6. The motor coil structure (30) according to claim 1, characterized in that, A temperature sensor is arranged in the multi-layer circuit board (10).

7. An electric machine characterized by A non-winding motor coil structure as claimed in any one of claims 1 to 6, A motor body, the motor body is internally mounted with the non-winding motor coil structure (30).

8. The motor according to claim 7, characterized in that, The motor body comprises an axial motor, a linear motor and a straight cylinder motor.

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