Stator adapter plate and adapter mode

Abstract

The invention relates to the technical field of motor stators, and discloses a stator adapter plate and an adapter mode. The stator adapter plate comprises a stator main body and an adapter plate; the stator main body comprises an iron core, an insulating frame and a coil wound on the outer side of the insulating frame; an annular groove is defined by an outer ring vertical wall and an inner ring vertical wall which are different in diameter in the center of the insulating frame, and the adapter plate is fixedly connected to a part of a notch in the upper end of the annular groove. A heat dissipation assembly is arranged in the annular groove and comprises heat dissipation fins, the heat dissipation fins are annularly arrayed along the annular groove, and the heights of the heat dissipation fins are arranged from low to high and from high to low in the circumferential direction of the annular groove from the direction of the adapter plate to form wavy arrangement; the upper end of the heat conduction piece is contacted with the adapter plate, and the lower end is connected with a plurality of radiating fins through a connecting ring; the air inlet channel and the heat dissipation channel are formed in the inner ring vertical wall and the outer ring vertical wall respectively. Through the design of the adapter plate, the effects of pressing wires and fixing welding points are achieved, and through the design of the heat dissipation assembly, the heat dissipation performance of the adapter plate is improved.

Description

Technical Field

[0001] The present invention relates to the technical field of motor stators, and in particular to a stator adapter plate and an adapter method. Background Art

[0002] In the field of motor technology, the stator and rotor form a motor. The stator, the relatively stationary part of the motor, primarily consists of an iron core, an insulating frame, and coils. By connecting the coils to an external power source, a magnetic field is generated, driving the rotor to rotate.

[0003] In the design of traditional motors, the coil is usually directly connected to the external wire, and then the wire is fixed using the slots set on the insulating frame. Since the coil itself has a certain elasticity, this method is prone to bouncing due to vibration and electromagnetic force when the motor is running, which in turn causes loose connections and electrical coupling, seriously affecting the stability of the motor operation. In addition, this slot method requires manual installation and connection, which greatly increases production costs and affects production efficiency. In addition, the heat dissipation performance of the traditional adapter plate is poor, and it cannot dissipate the heat generated during the operation of the generator in a timely and effective manner, causing the temperature of the adapter plate to rise, affecting its insulation performance and service life, and increasing the risk of motor failure.

[0004] Therefore, in view of the above problems, a new solution needs to be proposed to solve the above problems. Summary of the Invention

[0005] The present invention overcomes the deficiencies of the prior art and provides a stator adapter plate and an adapter method.

[0006] To achieve the above-mentioned objectives, the technical solution adopted by the present invention is: a stator adapter plate, comprising: a stator body and an adapter plate; the stator body comprises: an iron core, an insulating frame covering the iron core and in a hollow ring shape, and a coil wound on the outside of the insulating frame; the center of the insulating frame is formed by two outer ring vertical walls and an inner ring vertical wall with different diameters to form an annular groove, and the adapter plate is fixedly connected to a part of the notch at the upper end of the annular groove; a heat dissipation component is provided in the annular groove, comprising: heat dissipation fins, the heat dissipation fins are arranged in an annular array along the annular groove, and the height of the heat dissipation fins is arranged from low to high and then from high to low along the circumferential direction of the annular groove from the direction of the adapter plate to form a wavy arrangement; a heat conductor, the upper end of the heat conductor is in contact with the adapter plate, and the lower end is connected to a plurality of heat fins through a connecting ring; an air intake channel is provided on the inner ring vertical wall and the connecting ring; a heat dissipation channel is provided on the outer ring vertical wall; the air intake channel and the heat dissipation channel are both spiral and consistent with the direction of rotation of the rotor.

[0007] In a preferred embodiment of the present invention, the adapter plate includes: a welding area, a heat dissipation area, and an electric welding area;

[0008] In a preferred embodiment of the present invention, the welding area includes a plurality of independent bosses, each of which is provided with a fixed through groove, and the annular groove is connected with a welding rod by arranging a plurality of fixing frames. The adapter plate is fixed by passing the welding rod through the fixed through groove, and the coil is wound on the welding rod to form a conductive path.

[0009] In a preferred embodiment of the present invention, the heat dissipation area includes a heat-conducting substrate laid on one end of the adapter plate facing the annular groove, and thermal grease is coated between the contact surface of the heat-conducting substrate and the heat-conducting member.

[0010] In a preferred embodiment of the present invention, the welding area includes a plurality of conductive bumps provided on the upper end of the adapter plate, and the conductive bumps are used for fixing and electrically connecting to external wires.

[0011] In a preferred embodiment of the present invention, the heat conducting member is made of aluminum alloy or copper alloy, and its upper end is tightly fitted with the adapter plate.

[0012] In a preferred embodiment of the present invention, the characteristic is that: the minimum height of the heat dissipation fin is 1 / 3 of the groove depth, the maximum height is flush with the groove depth, and the surface is coated with thermal grease;

[0013] In a preferred embodiment of the present invention, the insulating frame is a multi-layer structure, the outer layer is a hard insulating material layer, the inner layer is a flexible insulating material layer, and the middle layer is a reinforcing rib layer, and the reinforcing rib layer is composed of a plurality of I-shaped or cross-shaped reinforcing ribs arranged crosswise.

[0014] In a preferred embodiment of the present invention, mounting grooves are provided on the outer ring vertical wall and the inner ring vertical wall at the lower end of the adapter plate, and the depth of the mounting grooves matches the thickness of the heat conducting member.

[0015] The present invention provides a transfer method for a stator adapter plate: first, a heat conductor connected to the heat dissipation fins is embedded in a mounting groove, with the bottom thereof abutting against the top of the fixing frame; a coil is wrapped around an outer ring vertical wall, and corresponding coil ends are clustered and wound around corresponding welding rods to form a conductive path; then, the adapter plate is placed at a portion of the notch at the upper end of the annular groove, so that the upper end of the heat conductor is tightly fitted with the adapter plate; finally, the welding rod is melted by external welding equipment to achieve a fixed connection between the adapter plate and the insulating frame and an electrical connection with the coil, thereby forming a conductive path of coil-welding rod-adapter plate-external power supply.

[0016] The present invention solves the defects existing in the background technology and has the following beneficial effects:

[0017] (1) The present application adopts the design of the adapter plate, which has clear partitions and is installed at the upper end of the coil to prevent the coil from bouncing, reduce the motor coupling phenomenon, and improve the connection stability. The heat dissipation area on it is set to dissipate heat in time to avoid overheating of the adapter plate during long-term operation affecting the motor performance, and further enhance the operation stability. At the same time, since the position of the adapter plate is fixed and its position is fixed by welding strips, it can be directly connected and fixed by automated welding positions. Compared with the traditional technology of directly connecting to external wires, the motor production efficiency is higher and the operation is more stable.

[0018] (2) The present application designs a heat dissipation component at the bottom of the adapter plate, and utilizes a heat-conducting member with high thermal conductivity and heat dissipation fins arranged in a wave pattern to achieve efficient heat transfer and dissipation of the adapter plate; the heat-conducting member is made of aluminum alloy or copper alloy to ensure that heat can be quickly transferred from the adapter plate to the heat dissipation fins; the special wave pattern of the heat dissipation fins increases the heat dissipation area, and the spiral air intake and heat dissipation channels make the air flow orderly and take away the heat; compared with the traditional heat dissipation design, the heat dissipation component of the present application not only significantly improves the heat dissipation efficiency, but also optimizes the thermal management performance of the motor, ensuring that the motor remains stable during long-term operation and effectively extending its service life. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the following briefly introduces the drawings required for use in the embodiments or the description of the prior art. Obviously, the drawings described below are only some embodiments described in the present invention. Those skilled in the art can also derive other drawings based on these drawings without inventive efforts.

[0020] Figure 1 It is a three-dimensional structural diagram of a preferred embodiment of the present invention;

[0021] Figure 2 1 is a schematic diagram of the stator main structure of a preferred embodiment of the present invention;

[0022] Figure 3 Schematic diagram of the structure of the adapter plate and heat dissipation assembly of the preferred embodiment of the present invention;

[0023] In the figure: 1. Stator body; 11. Inner ring vertical wall; 111. Air intake channel; 12. Outer ring vertical wall; 121. Heat dissipation channel; 13. Annular groove; 14. Fixing frame; 15. Welding strip; 16. Mounting groove; 2. Adapter plate; 21. Independent boss; 22. Conductive bump; 3. Heat dissipation assembly; 31. Heat conductor; 32. Connecting ring; 33. Heat dissipation fin. DETAILED DESCRIPTION

[0024] The following will clearly and completely describe the technical solutions in the embodiments of the present invention in conjunction with the accompanying drawings. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making creative efforts are within the scope of protection of the present invention.

[0025] In the following description, many specific details are set forth to facilitate a full understanding of the present invention. However, the present invention may also be implemented in other ways different from those described herein. Therefore, the scope of protection of the present invention is not limited to the specific embodiments disclosed below.

[0026] In the description of the present application, it should be understood that the terms "center", "longitudinal", "lateral", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside" and the like indicate orientations or positional relationships based on the orientations or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present application and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as limiting the scope of protection of the present application. In addition, the terms "first", "second", etc. are only used for descriptive purposes and cannot be understood as indicating or implying relative importance or implicitly indicating the number of the indicated technical features. Therefore, features defined as "first", "second", etc. may explicitly or implicitly include one or more of the features. In the description of the present invention, unless otherwise specified, "multiple" means two or more.

[0027] In the description of this application, it should be noted that, unless otherwise expressly specified or limited, the terms "installed," "connected," and "connected" should be understood in a broad sense. For example, they can refer to fixed connections, detachable connections, or integral connections; they can refer to mechanical connections or electrical connections; they can refer to direct connections or indirect connections through an intermediate medium; and they can refer to internal connections between two components. Those skilled in the art will understand the specific meanings of the above terms in this application based on specific circumstances.

[0028] Example 1:

[0029] like Figure 1 、 Figure 2 and Figure 3 As shown, a stator adapter plate 2 includes: a stator body 1 and an adapter plate 2;

[0030] The stator body 1 comprises an iron core, a hollow, ring-shaped insulating frame surrounding the iron core, and a coil wound around the insulating frame. The coil winding method is designed according to the number of phases and poles of the motor to ensure that it can produce a uniform magnetic field distribution. The iron core is made of stacked silicon steel sheets with high magnetic permeability to form the magnetic circuit of the motor. The silicon steel sheets are insulated from each other to reduce eddy current losses. The shape and size of the iron core are precisely machined according to the design requirements of the motor to ensure that it can fit tightly with the insulating frame.

[0031] The insulation frame has a multi-layer structure. The outer layer is a hard insulation material layer, such as epoxy resin laminate, which has high mechanical strength and good insulation performance. It can withstand the electromagnetic force and centrifugal force during the operation of the motor, and prevent external objects from damaging the internal coil; the inner layer is a flexible insulation material layer, such as polyimide film, which can better fit the surface of the iron core, fill the tiny gap between the iron core and the outer layer of hard insulation material, enhance the insulation effect and adapt to the thermal expansion and contraction of the iron core; the middle layer is a reinforcement layer, which is composed of multiple I-shaped or cross-section reinforcements arranged in a cross-shaped manner. It is made of glass fiber reinforced plastic and has the characteristics of high strength and light weight. It can effectively improve the overall stiffness and deformation resistance of the insulation frame, prevent it from vibrating and deforming during the operation of the motor, and thus protect the integrity of the coil.

[0032] Specifically, the adapter plate 2 includes: a welding area, a heat dissipation area, and an electric welding area; the welding area includes a plurality of independent bosses 21, each of which is provided with a fixed through-slot. A plurality of fixing brackets 14 are provided in the annular groove 13 to connect a welding bar 15. The adapter plate 2 is fixed by passing the welding bar 15 through the fixed through-slot. The coil is wound on the welding bar 15 to form a conductive path. The number of fixing brackets 14 and welding bars 15 is determined by the external coil group. For example, in the embodiment of the present application, there are eighteen coils, and the winding is divided into three groups with six coils as a group. In this case, the number of fixing brackets 14 and welding bars 15 required is greater than or equal to three. This design is convenient for installation and ensures the redundancy of the coil winding. If a single welding bar is damaged, the coil can be connected to the redundant welding bar. The pre-design of the fixing brackets 14 and welding bars 15 can not only ensure the firmness and reliability of the welding, but also effectively prevent the coil from bouncing, thereby improving the stability of the coil connection.

[0033] The heat dissipation area includes a heat-conducting substrate laid on one end of the adapter plate 2 facing the annular groove 13. Thermal grease is coated between the contact surface between the heat-conducting substrate and the heat-conducting part 31. The heat-conducting substrate is made of a material with high thermal conductivity, such as aluminum alloy or copper alloy, and can quickly transfer the heat generated by the adapter plate 2 to the heat-conducting part 31.

[0034] The welding area includes a plurality of conductive bumps 22 arranged at one end of the adapter plate 2 away from the annular groove 13. The conductive bumps 22 are used to form an electrical connection with the external wires. They are made of high-temperature resistant metal materials, such as silver-plated copper alloy, which can ensure good conductivity and welding reliability.

[0035] When the coil is wound on the outer ring vertical wall 12, it will warp due to its own elasticity, affecting the operation of the motor and generating an electric coupling effect. Therefore, in order to reduce this effect, the layout is generally carried out by increasing the coil spacing and increasing the overall insulation frame. However, for motor usage scenarios in specific scenarios, such as small motors such as drones and cameras, it is necessary to ensure the lightweight of the motor. The present application adopts the design of the adapter plate 2. On the one hand, the wiring is connected at the bottom thereof, which can play a role in pressing the wires and preventing the coil from warping; on the other hand, after the connecting plate is placed, the position is fixed, and automatic welding can be used for wiring, which reduces labor and realizes production automation.

[0036] Furthermore, an annular groove 13 is formed at the center of the insulating frame by two outer ring vertical walls 12 and an inner ring vertical wall 11 of different diameters. The adapter plate 2 is connected to a portion of the notch at the upper end of the annular groove 13. A heat dissipation component 3 is provided in the annular groove 13, including:

[0037] The heat dissipation fins 33 are arranged in a circular array along the annular groove 13, and the height of the heat dissipation fins 33 along the circumferential direction of the annular groove 13 from the direction of the adapter plate 2 is first arranged from low to high and then from high to low to form a wave-like arrangement; this design can effectively increase the heat dissipation area, while guiding the airflow in the annular groove 13 to form an orderly flow path that gradually flows upward from the bottom of the annular groove 13. The heat dissipation fins 33 are made of a material with high thermal conductivity, such as aluminum alloy or copper alloy, and their surface is coated with thermal grease to further enhance the heat dissipation effect. The minimum height of the heat dissipation fins 33 is 1 / 3 of the groove depth, and the maximum height is flush with the groove depth, which can ensure sufficient heat dissipation area without interfering with the assembly and operation of the motor;

[0038] Specifically, it also includes a heat conducting member 31, the upper end of the heat conducting member 31 contacts the adapter plate 2, and the lower end is fixedly connected to a plurality of heat dissipation fins 33 through a connecting ring 32, and is made of aluminum alloy or copper alloy;

[0039] Specifically, it includes an air intake channel 111 and a heat dissipation channel 121. The air intake channel 111 is provided on the inner ring vertical wall 11 and the connecting ring 32, while the heat dissipation channel 121 is provided on the outer ring vertical wall 12. Both channels are spiral and align with the direction of rotor rotation. This design allows airflow to smoothly enter the annular groove 13 along the spiral channel as the rotor rotates, and then be discharged from the motor through the heat dissipation channel 121 after removing heat.

[0040] Furthermore, an installation groove 16 is provided on the outer ring vertical wall 12 and the inner ring vertical wall 11 located at the lower end of the adapter plate 2. The depth of the installation groove 16 matches the thickness of the heat conductor 31. The design of the installation groove 16 not only provides an installation space for the heat conductor 31, but also ensures a close fit between the heat conductor 31 and the adapter plate 2 and the heat dissipation fins 33, thereby improving the heat conduction effect.

[0041] The specific transfer method of the stator transfer plate 2 in this embodiment is as follows:

[0042] First, fit the heat conducting member 31 with the heat dissipating fins 33 into the mounting groove 16, ensuring that the bottom of the heat conducting member 31 contacts the top of the fixing frame 14. The fixing frame 14 is pre-installed in the annular groove 13 to support the heat conducting member 31 and the heat dissipating fins 33.

[0043] The coils are wrapped around the outer ring vertical wall 12, and the corresponding coil ends are clustered and wound around corresponding welding rods 15. The welding rods 15 are pre-fixed in the annular groove 13 and supported by the fixing frame 14. The winding connection between the coil ends and the welding rods 15 forms a conductive path, ensuring that the current can be smoothly transmitted from the coil to the adapter plate 2;

[0044] Next, place the adapter plate 2 on the upper portion of the annular groove 13 so that the upper end of the heat conductor 31 is in close contact with the adapter plate 2. The heat dissipation area of the adapter plate 2 is in full contact with the heat conductor 31, ensuring that heat can be effectively transferred from the adapter plate 2 to the heat conductor 31.

[0045] Finally, the welding rod 15 is melted by external automated welding equipment to achieve a fixed connection between the adapter plate 2 and the insulating frame and an electrical connection with the coil, forming a conductive path of coil-welding rod 15-adapter plate 2-external power supply.

[0046] Working principle: When the motor is running, the rotation of the rotor will generate airflow in the annular groove 13. Under the action of centrifugal force, the airflow enters the annular groove 13 along the spiral air inlet channel 111. The heat generated by the adapter plate 2 is conducted to the heat dissipation fins 33 through the heat conductor 31. The thermal grease on the surface of the heat dissipation fins 33 further enhances the heat conduction effect. The airflow flows through the wavy channel between the heat dissipation fins 33 and flows from the bottom to the top of the annular groove 13, taking away the heat on the heat dissipation fins 33 and the heat conductor 31, realizing efficient heat dissipation of the adapter plate 2, thereby avoiding the stability of the adapter plate 2 during the operation of the motor.

[0047] The above description is based on the ideal embodiment of the present invention. Based on the above description, relevant personnel can make various changes and modifications without departing from the technical scope of this invention. The technical scope of this invention is not limited to the content of the specification and must be determined according to the scope of the claims.

Claims

1. A stator adapter plate (2), characterized in that: include: stator body (1) and adapter plate (2); The stator body (1) comprises: an iron core, an insulating frame covering the iron core and in a hollow ring shape, and a coil wound around the outside of the insulating frame; The center of the insulating frame is surrounded by two outer ring vertical walls (12) and an inner ring vertical wall (11) with different diameters to form an annular groove (13), and the adapter plate (2) is fixedly connected to a portion of the notch at the upper end of the annular groove (13); A heat dissipation component (3) is provided in the annular groove (13), comprising: Heat dissipation fins (33), the heat dissipation fins (33) are arranged in an annular array along the annular groove (13), and the height of the heat dissipation fins (33) along the circumferential direction of the annular groove (13) from the direction of the adapter plate (2) is arranged from low to high and then from high to low to form a wave-like arrangement; A heat conducting member (31), wherein the upper end of the heat conducting member (31) contacts the adapter plate (2), and the lower end is connected to a plurality of heat dissipation fins (33) via a connecting ring (32); An air intake channel (111) is provided on the inner ring vertical wall (11) and the connecting ring (32); A heat dissipation channel (121) is provided on the outer ring vertical wall (12); The air inlet channel (111) and the heat dissipation channel (121) are both spiral-shaped and consistent with the rotation direction of the rotor.

2. A stator adapter plate (2) according to claim 1, characterized in that: The adapter plate (2) comprises a welding area, a heat dissipation area and an electric welding area.

3. The stator transfer according to claim 2, characterized in that: The welding area includes a plurality of independent bosses (21), and a fixed through-groove is provided at the independent bosses (21). A welding bar (15) is connected to the annular groove (13) by arranging a plurality of fixing frames (14). The adapter plate (2) is fixed by passing the welding bar (15) through the fixed through-groove, and the coil is wound on the welding bar (15) to form a conductive path.

4. A stator adapter plate (2) according to claim 3, characterized in that: The heat dissipation area comprises a heat-conducting substrate laid on one end of the adapter plate (2) facing the annular groove (13), and heat-conducting silicone grease is coated between the contact surface between the heat-conducting substrate and the heat-conducting member (31).

5. A stator adapter plate (2) according to claim 4, characterized in that: The welding area includes a plurality of conductive bumps (22) arranged on the upper end of the adapter plate (2), and the conductive bumps (22) are used for fixing and electrically connecting with external wires.

6. The stator adapter plate (2) according to claim 1, characterized in that: The heat conducting member (31) is made of aluminum alloy or copper alloy, and its upper end is tightly fitted to the adapter plate (2).

7. The stator adapter plate (2) according to claim 1, characterized in that: The lowest height of the heat dissipation fins (33) is 1 / 3 of the groove depth, the highest height is flush with the groove depth, and the surface is coated with thermal conductive silicone grease.

8. The stator adapter plate (2) according to claim 1, characterized in that: The insulating frame is a multi-layer structure, with an outer layer being a hard insulating material layer, an inner layer being a flexible insulating material layer, and a middle layer being a reinforcing rib layer. The reinforcing rib layer is composed of a plurality of I-shaped or cross-shaped reinforcing ribs arranged crosswise.

9. The stator adapter plate (2) according to claim 1, characterized in that: A mounting groove (16) is provided at the lower end of the adapter plate (2), the outer ring vertical wall (12), and the inner ring vertical wall (11). The depth of the mounting groove (16) matches the thickness of the heat conducting member (31).

10. The stator adapter plate (2) adapter method according to claim 1, characterized in that: First, the heat conducting member (31) connected to the heat dissipating fins (33) is embedded in the mounting groove (16), with the bottom thereof contacting the top of the fixing frame (14); The coil is wrapped around the outer ring vertical wall (12), and the corresponding coil ends are clustered and wound around the corresponding welding strips (15) to form a conductive path; Then, the adapter plate (2) is placed on a portion of the notch at the upper end of the annular groove (13), so that the upper end of the heat conducting member (31) is tightly fitted to the adapter plate (2); Finally, the welding rod (15) is melted by external welding equipment to achieve fixed connection between the adapter plate (2) and the insulating frame and electrical connection with the coil, forming a conductive path of coil-welding rod (15)-adapter plate (2)-external power supply.

Images