Flat wire motor stator, winding structure and flat wire motor

Abstract

The utility model relates to the technical field of flat wire motor stators, winding structures and flat wire motors, in particular to a flat wire motor stator and winding structure. Comprising a stator winding body, a rotor shaft rotationally connected to the top surface of the stator winding body, an annular bin fixed to the peripheral wall of the stator winding body, a circular bin fixed to the peripheral wall of the annular bin, a top plate fixed to the top surface of the circular bin and a heat dissipation mechanism arranged on the annular bin. The heat dissipation mechanism comprises a plurality of heat dissipation pipes fixed between the upper inner wall and the lower inner wall of the annular bin, two supporting plates fixed between the inner walls of the heat dissipation pipes, and rotating rods rotationally connected to the interiors of the heat dissipation pipes, penetrating through the supporting plates and rotationally connected with the supporting plates. The fan blades are fixed on the peripheral wall of the rotating rod; and the ventilation pipes are fixed on the peripheral wall of the heat dissipation pipe, and one end of each ventilation pipe extends to the outside of the annular bin. According to the stator and winding structure of the flat wire motor, heat is absorbed through the heat conduction liquid, efficient heat dissipation and cooling are achieved, and motor operation is guaranteed.

Description

Technical Field

[0001] This application relates to the technical field of flat wire motor stators, winding structures, and flat wire motors, specifically a flat wire motor stator, winding structure, and flat wire motor. Background Technology

[0002] Integration of electric drive systems and flattening of motor wires are the main technical routes to achieve lightweighting and miniaturization. Flat wire winding motors use flat copper wires with a larger cross-sectional area in the stator windings. The windings are first made into a hairpin-like shape and inserted into the stator slots. Then, the ends of the hairpins are welded together at the other end. Compared with traditional round wire motors, they have advantages such as high power density, high energy conversion efficiency, and good NVH performance.

[0003] For example, Chinese patent (publication number: CN219918545U) discloses a stator, winding structure, and flat wire motor stator. The stator core is made of a certain number of silicon steel sheets stacked together, which can be done by riveting, welding, or bonding. 48 rectangular slots of the same size are arranged in a circumferential array on the stator core. Considering insulation, slot insulation paper of a certain thickness is inserted into the rectangular slots. Flat copper conductors are inserted into the 48 rectangular slots, and 2n (n is a natural number) conductors can be inserted into each slot. In order to achieve electrical connection between the conductors in the 48 rectangular slots, methods such as hairpins or welding are required. The existing method of using irregularly shaped wires to achieve electrical bridging will inevitably increase the welding difficulty and require multiple welding operations, reducing production efficiency. The use of end copper short-circuit plates replaces the bridging of irregularly shaped wires, simplifies the types of hairpins, and increases the reliability of the connection.

[0004] However, the aforementioned patents still have some shortcomings. Their motors lack a heat dissipation structure, making it difficult to efficiently improve the heat dissipation efficiency of the motor during use, which is somewhat inconvenient. Therefore, a flat wire motor stator, winding structure, and flat wire motor are proposed to solve the above problems. Utility Model Content

[0005] To address the shortcomings of existing technologies, this application provides a flat wire motor stator, winding structure, and flat wire motor, which has advantages such as good heat dissipation and solves the problem that the devices disclosed in the aforementioned searched patents are not convenient for efficient heat dissipation.

[0006] To achieve the above objectives, this application provides the following technical solution: a stator and winding structure for a flat wire motor, comprising a stator winding body, a rotor shaft rotatably connected to the top surface of the stator winding body, an annular compartment fixed to the outer peripheral wall of the stator winding body, a circular compartment fixed to the outer peripheral wall of the annular compartment, a top plate fixed to the top surface of the circular compartment, and a heat dissipation mechanism disposed on the annular compartment.

[0007] The heat dissipation mechanism includes multiple heat dissipation pipes fixed between the upper and lower inner walls of the annular compartment, two support plates fixed between the inner walls of the heat dissipation pipes, a rotating rod rotatably connected inside the heat dissipation pipes and passing through the support plates and rotatably connected thereto, fan blades fixed on the outer peripheral wall of the rotating rod, and multiple ventilation pipes fixed on the outer peripheral wall of the heat dissipation pipes with one end extending to the outside of the annular compartment.

[0008] By adopting the above technical solution, the heat generated by the stator winding body is absorbed by the heat-conducting liquid filled inside the annular chamber during use, thereby efficiently dissipating heat and cooling the stator winding body and ensuring the stable operation of the motor.

[0009] Furthermore, the heat dissipation mechanism also includes a circular plate fixed to the outer peripheral wall of the rotor shaft, an annular rack fixed to the outer peripheral wall of the circular plate, and a gear fixed to the outer peripheral wall of the rotor shaft and meshing with the annular rack.

[0010] By adopting the above technical solution, when the stator winding body drives the rotor shaft to rotate, the rotor shaft will also drive the fan blades to rotate through the set ring rack, gear and other structures, thereby improving the ventilation efficiency inside the heat dissipation pipe, enhancing the cooling efficiency of the heat dissipation pipe on the heat transfer fluid, and further ensuring the heat absorption efficiency of the heat transfer fluid on the stator winding body. The rotation of the rotor shaft is fully utilized to dissipate heat for the motor, further increasing the practicality of the device and making it easier to promote and use.

[0011] Furthermore, the heat dissipation mechanism also includes multiple guide rods fixed to the top surface of the circular plate, ball bearings rolled to the top of the guide rods, a positioning cylinder fitted to the top of the rotating rod and rotatably connected to the top plate, and an annular groove formed on the bottom surface of the top plate for sliding connection of the guide rods.

[0012] By adopting the above technical solution, the guide rod and ball bearings provide auxiliary guidance for the circular plate, thereby improving the stability of the circular plate's rotation. The positioning cylinder provides support for the top of the rotating rod, further enhancing the stability of the rotating rod during rotation.

[0013] Furthermore, the bottom surface of the circular chamber is provided with multiple air inlets, the outer peripheral wall of the circular chamber is provided with multiple heat dissipation holes, the bottom surface of the top plate is fixed with multiple mounting plates, the side of the mounting plate opposite to the circular chamber is threaded with a bolt that passes through the mounting plate and is threadedly connected to the circular chamber, and the outer peripheral wall of the circular chamber is provided with multiple mounting slots for the mounting plates to be inserted.

[0014] By adopting the above technical solution, the air inlet and heat dissipation holes facilitate air circulation inside the circular chamber, thereby ensuring that heat can be discharged in a timely manner. The bolts and mounting plates facilitate the installation and removal of the top plate, thus providing convenience for the maintenance of the stator winding body and the heat dissipation mechanism.

[0015] Furthermore, the top surface of the top plate has an open hole for the rotor shaft to pass through, the rotor shaft and the circular chamber are located on the same central axis, the annular chamber is filled with heat-conducting liquid, and the top surface of the circular chamber is open.

[0016] By adopting the above technical solution, the heat-conducting fluid is set to better absorb the heat generated by the stator winding body, thereby ensuring the cooling effect on the stator winding body.

[0017] Furthermore, both the upper and lower ends of the heat dissipation pipe are open and flush with the top and bottom surfaces of the annular compartment, respectively. The top surface of the support plate is provided with ventilation holes, and one end of the ventilation pipe is flush with the inner peripheral wall of the heat dissipation pipe and the other end is flush with the outer peripheral wall of the annular compartment.

[0018] By adopting the above technical solution, it is easy to make the ventilation pipe and heat dissipation pipe penetrate the annular compartment and come into contact with the heat transfer fluid inside, so as to facilitate the timely dissipation of the heat absorbed by the heat transfer fluid.

[0019] Furthermore, the annular groove and the circular plate are located on the same central axis, the multiple guide rods are equidistantly distributed along the circumference of the circular plate, the multiple positioning cylinders are equidistantly distributed along the circumference of the circular plate, and the bottom surface of the positioning cylinder is provided with a slot for inserting the rotating rod.

[0020] By adopting the above technical solution, it is easy to guide the circular plate through the guide rod and the annular groove, thereby increasing the stability of the circular plate rotation.

[0021] A flat wire motor, comprising: a flat wire motor stator and winding structure as described in any of the above-mentioned embodiments.

[0022] Compared with the prior art, the technical solution of this application has the following beneficial effects:

[0023] The stator and winding structure of this flat wire motor absorbs the heat generated by the stator winding body through the heat-conducting liquid filled inside the annular chamber, thus efficiently cooling the stator winding body and ensuring stable motor operation. When the stator winding body drives the rotor shaft to rotate, the rotor shaft also drives the fan blades of the heat dissipation mechanism to rotate, thereby improving the ventilation efficiency inside the heat dissipation pipe and enhancing the cooling efficiency of the heat-conducting liquid. This further ensures the heat absorption efficiency of the heat-conducting liquid on the stator winding body, making full use of the rotation of the rotor shaft to dissipate heat for the motor, further increasing the practicality of the device and making it easier to promote and use. Attached Figure Description

[0024] Figure 1 This is a front view schematic diagram of the main body of the stator winding in this application;

[0025] Figure 2 This is a three-dimensional schematic diagram of the circular compartment of this application;

[0026] Figure 3 This is a front cross-sectional view of the heat dissipation pipe of this application;

[0027] Figure 4 For this application Figure 1 Enlarged diagram of point A in the middle.

[0028] In the diagram: 1. Stator winding body; 2. Rotor shaft; 3. Annular compartment; 4. Circular compartment; 5. Top plate; 601. Heat dissipation pipe; 602. Rotating rod; 603. Fan blade; 604. Ventilation pipe; 605. Circular plate; 606. Annular rack; 607. Gear; 608. Guide rod; 609. Ball bearing; 610. Positioning cylinder; 611. Annular groove; 612. Support plate; 7. Air inlet; 8. Heat dissipation hole; 9. Mounting plate; 10. Bolt; 11. Mounting groove. Detailed Implementation

[0029] The technical solutions in the embodiments of this application will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of this application, and not all embodiments. All other embodiments obtained by those skilled in the art based on the embodiments of this application without creative effort are within the scope of protection of this application.

[0030] Please see Figure 1 This embodiment of a flat wire motor stator and winding structure includes a stator winding body 1, a rotor shaft 2 rotatably connected to the top surface of the stator winding body 1, an annular chamber 3 fixed to the outer peripheral wall of the stator winding body 1, a circular chamber 4 fixed to the outer peripheral wall of the annular chamber 3, a top plate 5 fixed to the top surface of the circular chamber 4, and a heat dissipation mechanism provided on the annular chamber 3. The top surface of the top plate 5 has an open hole for the rotor shaft 2 to pass through. The rotor shaft 2 and the circular chamber 4 are located on the same central axis. The annular chamber 3 is filled with a heat-conducting liquid. The top surface of the circular chamber 4 is open. In use, the heat generated by the stator winding body 1 is absorbed by the heat-conducting liquid filled inside the annular chamber 3, thereby efficiently dissipating heat and cooling the stator winding body 1 and ensuring the stable operation of the motor.

[0031] It should be noted that the stator winding body 1 and the rotor shaft 2 are mature and publicly available technologies. Therefore, their specific structure and working principle will not be described in detail in this article.

[0032] Please see Figure 1-3The heat dissipation mechanism includes multiple heat dissipation pipes 601 fixed between the upper and lower inner walls of the annular chamber 3, two support plates 612 fixed between the inner walls of the heat dissipation pipes 601, a rotating rod 602 rotatably connected inside the heat dissipation pipes 601 and passing through the support plates 612 and rotatably connected to them, fan blades 603 fixed on the outer peripheral wall of the rotating rod 602, and multiple ventilation pipes 604 fixed on the outer peripheral wall of the heat dissipation pipes 601 and extending to the outside of the annular chamber 3 at one end. When the stator winding body 1 drives the rotor shaft 2 to rotate, the rotor shaft 2 also drives the fan blades 603 of the heat dissipation mechanism to rotate, thereby improving the ventilation efficiency inside the heat dissipation pipes 601 and enhancing the cooling efficiency of the heat dissipation pipes 601 for the heat transfer fluid. This further ensures the heat absorption efficiency of the heat transfer fluid for the stator winding body 1, makes full use of the rotation of the rotor shaft 2 to dissipate heat for the motor, further increases the practicality of the device, and makes it easier to promote and use.

[0033] In this embodiment, both the upper and lower ends of the heat dissipation pipe 601 are open and flush with the top and bottom surfaces of the annular chamber 3, respectively. The top surface of the support plate 612 is provided with ventilation holes. One end of the ventilation pipe 604 is flush with the inner peripheral wall of the heat dissipation pipe 601 and the other end is flush with the outer peripheral wall of the annular chamber 3. The heat dissipation pipe 601 and ventilation pipe 604 inserted inside the annular chamber 3 enhance the heat dissipation of the heat transfer fluid and ensure its heat absorption and cooling effect on the stator winding body 1.

[0034] Please see Figure 1-4 In this embodiment, the heat dissipation mechanism also includes a circular plate 605 fixed on the outer peripheral wall of the rotor shaft 2, an annular rack 606 fixed on the outer peripheral wall of the circular plate 605, and a gear 607 fixed on the outer peripheral wall of the rotating rod 602 and meshing with the annular rack 606. When the stator winding body 1 drives the rotor shaft 2 to rotate, the rotor shaft 2 drives the circular plate 605 to rotate, the circular plate 605 drives the annular rack 606 to rotate, and the annular rack 606 drives the rotating rod 602 to rotate through the gear 607, which in turn drives the fan blades 603 to rotate. The fan blades 603 blow air from the bottom of the heat dissipation pipe 601 and blow it out through multiple ventilation pipes 604 to reduce the temperature of the heat transfer fluid and thus ensure its heat absorption efficiency.

[0035] Please see Figure 1-4In this embodiment, the heat dissipation mechanism also includes multiple guide rods 608 fixed to the top surface of the circular plate 605, ball bearings 609 rollingly connected to the top of the guide rods 608, positioning cylinders 610 fitted onto the top of the rotating rod 602 and rotatably connected to the top plate 5, and an annular groove 611 formed on the bottom surface of the top plate 5 for sliding connection of the guide rods 608. The annular groove 611 and the circular plate 605 are located on the same central axis. The multiple guide rods 608 are equidistantly distributed along the circumference of the circular plate 605, and the multiple positioning cylinders 610 are equidistantly distributed along the circumference of the circular plate 605. The bottom surface of the positioning cylinder 610 is provided with a slot for the rotating rod 602 to be inserted. When the rotor shaft 2 drives the circular plate 605 to rotate, the guide rods 608 and ball bearings 609 provide auxiliary guidance for the circular plate 605, improving the stability of the rotation of the circular plate 605. The positioning cylinders 610 provide support for the top of the rotating rod 602, improving the stability of the rotating rod 602 during rotation.

[0036] Please see Figure 1 In this embodiment, the bottom surface of the circular chamber 4 is provided with multiple air inlets 7, and the outer peripheral wall of the circular chamber 4 is provided with multiple heat dissipation holes 8. The bottom surface of the top plate 5 is fixed with multiple mounting plates 9. The side of the mounting plate 9 away from the circular chamber 4 is threaded with a bolt 10 that passes through the mounting plate 9 and is threadedly connected to the circular chamber 4. The outer peripheral wall of the circular chamber 4 is provided with multiple mounting slots 11 for the mounting plates 9 to be inserted into. The air inlets 7 and heat dissipation holes 8 facilitate air circulation inside the circular chamber 4, thereby ensuring that heat can be discharged in a timely manner. The bolts 10 and mounting plates 9 facilitate the installation and removal of the top plate 5, thereby providing convenience for the maintenance of the stator winding body 1 and the heat dissipation mechanism.

[0037] A flat wire motor, comprising: a flat wire motor stator and winding structure as described in any of the above-mentioned embodiments.

[0038] The working principle of the above embodiments is as follows:

[0039] (1) During use, the heat generated by the stator winding body 1 is transferred through the annular chamber 3 and absorbed by the heat-conducting liquid inside it, thereby reducing the temperature of the stator winding body 1. At the same time, the heat dissipation of the heat-conducting liquid is enhanced by the heat dissipation pipe 601 and ventilation pipe 604 inserted inside the annular chamber 3, ensuring its heat absorption and cooling effect on the stator winding body 1. When the stator winding body 1 drives the rotor shaft 2 to rotate, the rotor shaft 2 drives the circular plate 605 to rotate, the circular plate 605 drives the annular rack 606 to rotate, the annular rack 606 drives the rotating rod 602 to rotate through the gear 607, further driving the fan blade 603 to rotate. The fan blade 603 blows air from the bottom of the heat dissipation pipe 601 and blows it out through multiple ventilation pipes 604, reducing the temperature of the heat-conducting liquid and thus ensuring its heat absorption efficiency.

[0040] (2) When the rotor shaft 2 drives the circular plate 605 to rotate, the guide rod 608 and the ball bearing 609 play an auxiliary guiding role for the circular plate 605, thereby improving the stability of the rotation of the circular plate 605. The positioning cylinder 610 provides support for the top of the rotating rod 602, thereby improving the stability of the rotating rod 602. The air inlet 7 and heat dissipation hole 8 facilitate the air circulation inside the circular chamber 4, thereby ensuring that heat can be discharged in time. The bolts 10 and mounting plate 9 facilitate the installation and removal of the top plate 5, thereby providing convenience for the maintenance of the stator winding body 1 and the heat dissipation mechanism.

Claims

1. A flat wire motor stator and winding structure, characterized in that: It comprises a stator winding body (1), a rotor shaft (2) rotatably connected to the top surface of the stator winding body (1), an annular bin (3) fixed on the outer peripheral wall of the stator winding body (1), a circular bin (4) fixed on the outer peripheral wall of the annular bin (3), a top plate (5) fixed on the top surface of the circular bin (4), and a heat dissipation mechanism arranged on the annular bin (3); The heat dissipation mechanism comprises a plurality of heat dissipation pipes (601) fixed between the upper and lower inner walls of the annular bin (3), two support plates (612) fixed between the inner walls of the heat dissipation pipes (601), a rotating rod (602) rotatably connected to the inside of the heat dissipation pipes (601) and penetrating through the support plates (612) and rotatably connected thereto, fan blades (603) fixed to the outer peripheral wall of the rotating rod (602), and a plurality of ventilation pipes (604) fixed to the outer peripheral wall of the heat dissipation pipes (601) and having one end extending to the outside of the annular bin (3).

2. A flat wire motor stator and winding structure according to claim 1, characterized in that: The heat dissipation mechanism further comprises a circular plate (605) fixed on the outer peripheral wall of the rotor shaft (2), an annular rack (606) fixed on the outer peripheral wall of the circular plate (605), and a gear (607) fixed on the upper side of the outer peripheral wall of the rotating rod (602) and meshing with the annular rack (606).

3. A flat wire motor stator and winding structure according to claim 2, characterized in that: The heat dissipation mechanism further comprises a plurality of guide rods (608) fixed to the top surface of the circular plate (605), balls (609) rollingly connected to the top ends of the guide rods (608), a positioning cylinder (610) sleeved on the top end of the rotating rod (602) and rotatably connected to the top plate (5), and an annular groove (611) provided on the bottom surface of the top plate (5) for the guide rods (608) to be slidably connected.

4. A flat wire motor stator and winding structure according to claim 1, characterized in that: The bottom surface of the circular bin (4) is provided with a plurality of air inlet holes (7), the outer peripheral wall of the circular bin (4) is provided with a plurality of heat dissipation holes (8), the bottom surface of the top plate (5) is fixed with a plurality of mounting plates (9), a side of the mounting plate (9) facing away from the circular bin (4) is threadedly connected with a bolt (10) penetrating the mounting plate (9) and threadedly connected to the circular bin (4), and the outer peripheral wall of the circular bin (4) is provided with a plurality of mounting grooves (11) for plugging the mounting plates (9) therein.

5. The flat wire motor stator and winding structure according to claim 1, characterized in that: The top surface of the top plate (5) is provided with a movable hole for the rotor shaft (2) to pass through, the rotor shaft (2) and the circular bin (4) are located on the same central axis, the annular bin (3) is filled with heat transfer fluid, and the top surface of the circular bin (4) is open.

6. A flat wire motor stator and winding structure according to claim 1, characterized in that: The upper and lower ends of the heat dissipation pipe (601) are both open and respectively flush with the top and bottom surfaces of the annular bin (3); a vent hole is provided on the top surface of the support plate (612); one end of the ventilation pipe (604) is flush with the inner circumferential wall of the heat dissipation pipe (601) and the other end is flush with the outer circumferential wall of the annular bin (3).

7. A flat wire motor stator and winding structure according to claim 3, characterized in that: The annular groove (611) and the circular plate (605) are located on the same central axis, the plurality of guide rods (608) are equidistantly distributed along the circumference of the circular plate (605), the plurality of positioning cylinders (610) are equidistantly distributed along the circumference of the circular plate (605), and the bottom surface of the positioning cylinder (610) is provided with a slot for the rotating rod (602) to be inserted.

8. A flat wire motor, characterized in that: include: The flat wire motor adopts the flat wire motor stator and winding structure described in any one of claims 1 to 7.

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