A cooling structure for an axial flux disk motor

Abstract

The present invention discloses an axial flux disk motor cooling structure, including a casing end cover; a rotor is inserted into the casing end cover, the rotor includes a rotor shaft and a magnetic steel mounting plate sleeved on the rotor shaft, a plurality of mounting slots are arranged on the magnetic steel mounting plate, a plurality of magnetic steels are arranged in the mounting slots, a plurality of first heat dissipation ribs are arranged on the two end faces of the magnetic steel mounting plate between two adjacent mounting slots, and each first heat dissipation rib extends along the diameter direction of the magnetic steel mounting plate; a stator core is arranged between the casing end cover and the magnetic steel mounting plate, the stator core is sleeved on the rotor shaft, and a stator winding is embedded on the stator core; a cooling part includes a first cooling member and a second cooling member, the first cooling member is arranged between the casing end cover and the stator core, and the second cooling member is sleeved on the outer ring of the magnetic steel mounting plate. In this way, the first heat dissipation ribs arranged on the magnetic steel mounting plate can increase the heat dissipation area, optimize the heat conduction path, and improve the stability and life of the motor.

Description

Technical Field

[0001] The invention relates to the technical field of disc motors, in particular to an axial flux disc motor cooling structure. Background Art

[0002] Axial flux disc motors have the characteristics of small size, high power density, and small axial size, and are widely used in electric vehicles, industrial equipment and other fields. The motor will inevitably produce various losses during operation, thereby generating a large amount of heat. Excessive temperature rise will affect the normal operation of the motor. This part of the heat is mainly generated when the stator and rotor are working. Due to the special structure of the axial flux motor, its internal heat dissipation is difficult, which is also the difficulty in the development of the axial flux disc motor.

[0003] In the prior art, water cooling is used to cool the disc motor. By designing cooling water channels around the stator core and utilizing the convective heat transfer of circulating water, the heat generated inside the motor is exported to the external environment. Although this method alleviates the thermal load problem of the motor to a certain extent, its limitations are also obvious: it mainly focuses on the heat dissipation on the stator side, while there is a lack of effective heat dissipation pathways for the heat generated by the stator winding ends, rotor magnets, and stray losses on the air gap side of the motor. This heat accumulates continuously inside the motor, creating a potential risk of overheating. Summary of the invention

[0004] In order to overcome the problems existing in the related art, the present invention provides an axial flux disk motor cooling structure.

[0005] According to the present invention, an axial flux disk motor cooling structure is provided, comprising:

[0006] Casing end cover;

[0007] A rotor, the rotor is inserted into the housing end cover, the rotor comprises a rotor shaft and a magnetic steel mounting plate sleeved on the rotor shaft, the magnetic steel mounting plate is provided with a plurality of mounting grooves, a plurality of magnetic steels are arranged in the mounting grooves, and a plurality of first heat dissipation ribs are arranged on both end surfaces of the magnetic steel mounting plate between two adjacent mounting grooves, and each of the first heat dissipation ribs extends along the diameter direction of the magnetic steel mounting plate;

[0008] A stator core is arranged between the housing end cover and the magnetic steel mounting plate, the stator core is sleeved on the rotor shaft, and a stator winding is embedded in the stator core;

[0009] The cooling part includes a first cooling member and a second cooling member, wherein the first cooling member is arranged between the housing end cover and the stator core, and the second cooling member is sleeved on the outer ring of the magnetic steel mounting plate.

[0010] In some embodiments, a step portion is provided on the groove wall of the mounting groove extending along the diameter direction of the magnetic steel mounting plate, and the side edge of the magnetic steel is clamped in the step portion.

[0011] In some embodiments, a fiber sheath is sleeved on the outer ring of the magnetic steel mounting plate, and the second cooling member is sleeved on the outer ring of the fiber sheath.

[0012] In some embodiments, the first cooling member includes a fixed bottom plate, the fixed bottom plate is sleeved on the rotor shaft, a plurality of flow diversion baffles are arranged on a side of the fixed bottom plate close to the housing end cover, and the plurality of flow diversion baffles are arranged concentrically with the center of the fixed bottom plate;

[0013] The diversion baffle is also provided with a first air inlet and a first air outlet, and the first air inlet and the first air outlet are symmetrically arranged with respect to the center of the fixed bottom plate.

[0014] In some embodiments, a plurality of second heat dissipation ribs are disposed between the two diversion baffles, and the plurality of second heat dissipation ribs are disposed concentrically with the center of the fixed bottom plate.

[0015] In some embodiments, at least one notch is provided on each of the second heat dissipation ribs, and the notch is used to connect the space between two adjacent second heat dissipation ribs and / or the space between the second heat dissipation rib and the diversion baffle.

[0016] In some embodiments, two first wind shields are disposed inside the second cooling member, the two first wind shields are symmetrically disposed along the center of the second cooling member, and the two first wind shields divide the internal space of the second cooling member into an air inlet space and an air outlet space;

[0017] A second air inlet is arranged on the outer circle of the air inlet space, and a plurality of third air outlets are arranged on the inner circle of the air inlet space;

[0018] The outer circle of the air outlet space is provided with a second air outlet, and the inner circle of the air outlet space is provided with a plurality of third air inlets.

[0019] In some embodiments, a second wind shield is provided at the second air inlet, and the second wind shield divides the second air inlet into two independent spaces;

[0020] A third wind shield is provided at the second air outlet, and the third wind shield divides the second air outlet into two independent spaces.

[0021] In some embodiments, the outer ring of the second cooling member is further provided with a positioning hole, and the positioning hole is used to install and fix the second cooling member on the housing.

[0022] In some embodiments, an isolation mesh cover is provided on a side of the housing end cover close to the stator core, and the isolation mesh cover is sleeved on the outer ring of the stator winding and the second cooling member.

[0023] The beneficial effects of the present invention are:

[0024] In the axial flux disk motor cooling structure provided by the present invention, the first heat dissipation ribs arranged on the magnetic steel mounting plate can increase the heat dissipation area, which helps to transfer the heat generated by the rotor to the external environment more quickly. The first heat dissipation ribs extend along the diameter direction of the magnetic steel mounting plate, optimizing the heat conduction path. In addition, cooling parts are respectively arranged between the housing end cover and the stator core and on the outer ring of the magnetic steel mounting plate, thereby forming effective cooling of the internal structure of the motor, which can ensure that the motor can maintain a low temperature even when running at high load, thereby improving the stability and life of the motor. BRIEF DESCRIPTION OF THE DRAWINGS

[0025] In order to more clearly illustrate the technical solutions in the embodiments of the present invention, the drawings required for use in the description of the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present invention. For those skilled in the art, other drawings can be obtained based on these drawings without creative work.

[0026] Figure 1 It is a cross-sectional schematic diagram showing a cooling structure of an axial flux disk motor according to an exemplary embodiment.

[0027] Figure 2 is a schematic structural diagram of a first cooling member according to an exemplary embodiment;

[0028] Figure 3 is a schematic structural diagram of a second cooling member according to an exemplary embodiment;

[0029] Figure 4 is a schematic structural diagram of an isolation mesh cover according to an exemplary embodiment;

[0030] Figure 5 is a schematic structural diagram of a magnetic steel mounting plate and a magnetic steel after being assembled according to an exemplary embodiment;

[0031] Figure 6 is a schematic structural diagram of a magnetic steel mounting plate according to an exemplary embodiment;

[0032] Figure 7 for Figure 6 Schematic diagram of the enlarged structure of A.

[0033] In the figure: 1, housing end cover; 110, limit plate; 120, installation cylinder;

[0034] 2. rotor; 210. rotor shaft; 220. magnetic steel mounting plate; 221. mounting groove; 222. step portion; 223. first heat dissipation rib; 224. clamping groove; 230. magnetic steel; 240. fiber sheath;

[0035] 3. Stator core; 4. Stator winding;

[0036] 5. first cooling element; 510. fixed bottom plate; 520. diversion baffle; 530. first air inlet; 540. first air outlet; 550. second heat dissipation rib; 551. notch;

[0037] 6. Second cooling element; 610. First wind shield; 620. Air inlet space; 621. Second air inlet; 622. Third air outlet; 623. Second wind shield; 630. Air outlet space; 631. Second air outlet; 632. Third air inlet; 633. Third wind shield; 640. Positioning hole;

[0038] 7. Isolation mesh cover; 8. Bearing; 9. Bearing seat; 10. Lip seal ring. DETAILED DESCRIPTION

[0039] The technical scheme in the embodiment of the present invention will be described clearly and completely below in conjunction with the accompanying drawings in the embodiment of the present invention. Obviously, the described embodiment is only a part of the embodiment of the present invention, not all of the embodiments. Based on the embodiment of the present invention, all other embodiments obtained by those skilled in the art without creative work belong to the protection scope of the present invention.

[0040] Reference to an "embodiment" herein means that a particular feature, structure, or characteristic described in conjunction with the embodiment may be included in at least one embodiment of the present invention. The appearance of the phrase in various places in the specification does not necessarily refer to the same embodiment, nor is it an independent or alternative embodiment that is mutually exclusive with other embodiments. It is explicitly and implicitly understood by those skilled in the art that the embodiments described herein may be combined with other embodiments.

[0041] Axial flux disc motors have the characteristics of small size, high power density, and small axial size, and are widely used in electric vehicles, industrial equipment and other fields. The motor will inevitably produce various losses during operation, thereby generating a large amount of heat. Excessive temperature rise will affect the normal operation of the motor. This part of the heat is mainly generated when the stator and rotor are working. Due to the special structure of the axial flux motor, its internal heat dissipation is difficult, which is also the difficulty in the development of the axial flux disc motor.

[0042] In the prior art, water cooling is used to cool the disc motor. By designing cooling water channels around the stator core and utilizing the convective heat transfer of circulating water, the heat generated inside the motor is exported to the external environment. Although this method alleviates the thermal load problem of the motor to a certain extent, its limitations are also obvious: it mainly focuses on the heat dissipation on the stator side, while there is a lack of effective heat dissipation pathways for the heat generated by the stator winding ends, rotor magnets, and stray losses on the air gap side of the motor. This heat accumulates continuously inside the motor, creating a potential risk of overheating.

[0043] In order to solve the problems existing in the related art, an embodiment of the present invention provides an axial flux disc motor cooling structure. The first heat dissipation ribs arranged on the magnetic steel mounting plate can increase the heat dissipation area, which helps to transfer the heat generated by the rotor to the external environment more quickly. The first heat dissipation ribs extend along the diameter direction of the magnetic steel mounting plate, thereby optimizing the heat conduction path. In addition, cooling parts are respectively arranged between the end cover of the casing and the stator core and on the outer ring of the magnetic steel mounting plate, thereby forming effective cooling for the internal structure of the motor, which can ensure that the motor can maintain a low temperature even when running at high loads, thereby improving the stability and life of the motor. The present invention has a simple structure, is easy to produce and install, will not affect the internal size structure of the disc motor, and can quickly take away the heat accumulated on one side of the stator core and one side of the magnetic steel during the operation of the motor, thereby achieving effective heat dissipation of the motor.

[0044] The technical scheme in the embodiment of the present invention will be described clearly and completely below in conjunction with the accompanying drawings in the embodiment of the present invention. Obviously, the described embodiment is only a part of the embodiment of the present invention, not all of the embodiments. Based on the embodiment of the present invention, all other embodiments obtained by those skilled in the art without creative work belong to the protection scope of the present invention.

[0045] like Figure 1-Figure 7 As shown, this embodiment provides an axial flux disk motor cooling structure, wherein, with reference to Figure 1 The axial flux disk motor cooling structure includes a housing end cover 1, a rotor 2, a stator core 3 and a cooling unit. The rotor 2 is disposed on the housing end cover 1, and the rotor 2 includes a rotor shaft 210 and a magnetic steel mounting plate 220 sleeved on the rotor shaft 210. For example, referring to Figure 1The housing end cover 1 includes a limit plate 110 and a mounting cylinder 120. The center of the mounting cylinder 120 is located on the same straight line as the center of the limit plate 110. The rotor shaft 210 is inserted into the mounting cylinder 120. The rotor shaft 210 is sleeved with a bearing 8. The bearing 8 is installed in the mounting cylinder 120 through a bearing seat 9. A plurality of mounting grooves 221 are provided on the magnetic steel mounting plate 220. A plurality of magnetic steels 230 are provided in the mounting grooves 221. A plurality of first heat dissipation ribs 223 are provided on both end surfaces of the magnetic steel mounting plate 220 between two adjacent mounting grooves 221. Each first heat dissipation rib 223 extends along the diameter direction of the magnetic steel mounting plate 220. By providing the first heat dissipation rib 223 extending along the diameter direction on the magnetic steel mounting plate 220, the heat dissipation area is increased, which is beneficial to the conduction and dissipation of heat. At the same time, the provision of the first heat dissipation rib 223 can also form a certain air duct between the magnetic steels 230, which is conducive to air flow and further improves the heat dissipation effect.

[0046] The stator core 3 is arranged between the housing end cover 1 and the magnetic steel mounting plate 220, the stator core 3 is sleeved on the rotor shaft 210, and the stator winding 4 is embedded on the stator core 3. The cooling unit includes a first cooling member 5 and a second cooling member 6, the first cooling member 5 is arranged between the housing end cover 1 and the stator core 3, and the second cooling member 6 is sleeved on the outer ring of the magnetic steel mounting plate 220. For example, referring to Figure 1 , the mounting tube 120 extends from the limit plate 110 to the direction close to the magnetic steel mounting plate 220, the top of the mounting tube 120 extends to the lower end surface of the magnetic steel mounting plate 220, the stator core 3 is sleeved on the outer ring of the mounting tube 120, and the stator winding 4 is embedded on the stator core 3. The first cooling member 5 is arranged between the limit plate 110 and the stator core 3, and the second cooling member 6 is sleeved on the outer ring of the magnetic steel mounting plate 220. The first cooling member 5 is arranged between the housing end cover 1 and the stator core 3, which can effectively absorb and take away the heat generated by the stator core 3. The second cooling member 6 is sleeved on the outer ring of the magnetic steel mounting plate 220, which can further enhance the heat dissipation effect of the magnetic steel mounting plate 220 and the magnetic steel 230 thereon. The design of the double cooling member makes the heat dissipation of the axial flux disk motor more comprehensive and efficient, which helps to maintain the stable operation of the motor in a high temperature environment, forms an effective cooling of the internal structure of the motor, and can ensure that the motor can maintain a low temperature even when running under high load, thereby improving the stability and life of the motor.

[0047] In other implementations, a lip seal ring 10 is also provided at the bearing 8 of the axial flux disc motor, which can seal the axial flux disc motor to prevent external dust and impurities from entering the motor and causing damage to the motor. It also prevents external air from entering the motor and changing the cooling wind flow direction, thereby affecting the air cooling effect. In addition, when the axial flux disc motor is working, the wires of the stator winding 4 need to be led out and connected to the outside world. Therefore, the outlet position of the axial flux disc motor is sealed with sealant to avoid affecting the air cooling effect due to the change in the cooling wind flow direction.

[0048] In some embodiments of the present invention, reference Figure 5 , Figure 6 and Figure 7 , a step portion 222 is provided on the groove wall extending along the diameter direction of the magnetic steel mounting plate 220 of the mounting groove 221, and the side edge of the magnetic steel 230 is clamped in the step portion 222. For example, referring to Figure 5 and Figure 6 , 10 mounting grooves 221 are arranged along the circumferential direction of the magnetic steel mounting plate 220, and the shape of the mounting groove 221 is adapted to the shape of the magnetic steel 230. Step portions 222 are arranged on the groove walls on the left and right sides of the mounting groove 221. During installation, the side edges of the magnetic steel 230 can be snapped into the step portions 222. The step portions 222 can not only completely fix the magnetic steel 230 and avoid the phenomenon of the magnetic steel 230 falling off due to sudden loading and unloading, but also increase the contact area between the magnetic steel 230 and the magnetic steel mounting plate 220. The step portions 222 are arranged so that the magnetic steel 230 can be accurately snapped into the predetermined position during installation, avoiding the displacement or shaking of the magnetic steel 230 during the installation process. The material of the magnetic steel mounting plate 220 is die-cast aluminum alloy, which can quickly absorb the internal heat of the magnetic steel 230 and further help the magnetic steel 230 to dissipate heat. In addition, referring to Figure 6 and Figure 7 , a clamping groove 224 may be provided at the bottom of the groove of the mounting groove 221 near the rotor shaft 210, and a clamping protrusion matched with the clamping groove 224 may be provided on the magnetic steel 230, so that the connection stability between the magnetic steel 230 and the magnetic steel mounting plate 220 can be further strengthened. When no clamping portion is provided on the magnetic steel 230, an air circulation gap may be generated between the magnetic steel 230 and the magnetic steel mounting plate 220 through the clamping groove 224, so as to further help the magnetic steel 230 to dissipate heat.

[0049] In some embodiments of the present invention, reference Figure 1 and Figure 5, a fiber sheath 240 is provided on the outer ring of the magnetic steel mounting plate 220, and the second cooling member 6 is provided on the outer ring of the fiber sheath 240. The magnetic steel 230 is clamped in the magnetic steel mounting plate 220 through the step portion 222, and then a carbon fiber sheath 240 is provided on the outer ring of the magnetic steel 230 and the magnetic steel mounting plate 220, which can play a role in completely fixing the magnetic steel 230, avoiding the phenomenon of the magnetic steel 230 falling off due to sudden loading and unloading, thereby ensuring the stable operation of the motor. At the same time, the carbon fiber sheath 240 has good thermal conductivity, and can transfer the heat generated by the magnetic steel 230 more quickly through the second cooling member 6, reduce the temperature of the magnetic steel 230, and improve the thermal stability of the motor. The carbon fiber sheath 240 can also protect the magnetic steel 230 from wear or damage from other components, thereby reducing the maintenance cost of the motor.

[0050] In some embodiments of the present invention, reference Figure 1 and Figure 2 The first cooling member 5 includes a fixed bottom plate 510, which is sleeved on the rotor shaft 210. A plurality of diverter baffles 520 are arranged on the side of the fixed bottom plate 510 close to the casing end cover 1. It should be noted that the first cooling member 5 is made of aluminum alloy. The plurality of diverter baffles 520 are arranged concentrically with the center of the fixed bottom plate 510; the diverter baffle 520 is also provided with a first air inlet 530 and a first air outlet 540, and the first air inlet 530 and the first air outlet 540 are symmetrically arranged with respect to the center of the fixed bottom plate 510. For example, referring to Figure 1 and Figure 2The fixed bottom plate 510 is installed on the mounting tube 120 of the housing end cover 1 by interference fit, and the upper surface of the fixed bottom plate 510 is in close contact with the surface of the stator core 3. The stator core 3, the fixed bottom plate 510 and the housing end cover 1 are positioned and installed by bolt connection. The fixed bottom plate 510 is made of aluminum alloy material to quickly absorb the heat caused by the iron loss or other losses of the stator core 3. Six diverter baffles 520 are arranged on the fixed base plate 510 to form a plurality of cooling channels, wherein the fixed base plate 510 is divided into an upper and lower part by the diverter baffles 520, three diverter baffles 520 are arranged in the upper part of the fixed base plate 510, and three diverter baffles 520 are arranged in the lower part of the fixed base plate 510, wherein the three diverter baffles 520 in the upper part of the fixed base plate 510 are symmetrically arranged with the three diverter baffles 520 in the lower part of the fixed base plate 510, respectively, the first air inlet 530 and the first air outlet 540 are arranged at the axial position of the diverter baffle 520, and the lower surface of the diverter wind shield is close to the inner side of the casing end cover 1, so as to ensure that the wind entering the cooling channel is evenly dispersed to various areas. In this way, the diverter baffle 520 is arranged concentrically with the center of the fixed base plate 510, ensuring that the cooling airflow can be evenly and symmetrically distributed around the stator core 3. The diverter baffle 520 divides the fixed base plate 510 into two parts, an upper part and an lower part, each part is provided with the same number of baffles. This symmetrical design helps to maintain the balance and stability of the cooling airflow. The first air inlet 530 and the first air outlet 540 are symmetrically arranged with respect to the center of the fixed base plate 510, ensuring that the cooling airflow can enter evenly from one side, pass through the stator core 3 area, and be evenly discharged from the other side, thereby reducing the energy loss of the airflow when turning or changing direction, thereby improving the cooling efficiency.

[0051] In some embodiments of the present invention, reference Figure 2 A plurality of second heat dissipation ribs 550 are arranged between two adjacent flow dividing baffles 520, and the plurality of second heat dissipation ribs 550 are arranged concentrically with the center of the fixed bottom plate 510. In this way, the heat dissipation ribs are made of aluminum alloy material, which has good thermal conductivity and can quickly dissipate the absorbed heat into the cooling channel and be taken away by the cooling air. The second heat dissipation ribs 550 are arranged to ensure uniform distribution of the heat dissipation area, which helps to maintain the stability and consistency of the cooling effect. In addition, the heat dissipation ribs not only play a role in heat dissipation, but also enhance the structural strength of the fixed bottom plate 510, so that the heat can be quickly transferred from the stator core 3 to the heat dissipation ribs, and then taken away by the cooling airflow.

[0052] In some embodiments of the present invention, reference Figure 2At least one notch 551 is provided on each second heat dissipation rib 550, and the notch 551 is used to connect the space between two adjacent second heat dissipation ribs 550 and / or the space between the second heat dissipation rib 550 and the diverter baffle 520. By providing the notch 551 on the heat dissipation rib, the connected space allows the cooling airflow to flow more freely, reduces the obstruction of the airflow between the heat dissipation ribs, and thus improves the heat dissipation efficiency.

[0053] In some embodiments of the present invention, reference Figure 1 and Figure 3 Two first wind shields 610 are arranged inside the second cooling member 6, and the two first wind shields 610 are symmetrically arranged along the center of the second cooling member 6. The two first wind shields 610 divide the internal space of the second cooling member 6 into an air inlet space 620 and an air outlet space 630; a second air inlet 621 is arranged on the outer circle of the air inlet space 620, and a plurality of third air outlets 622 are arranged on the inner circle of the air inlet space 620; a second air outlet 631 is arranged on the outer circle of the air outlet space 630, and a plurality of third air inlets 632 are arranged on the inner circle of the air outlet space 630. Exemplarily, the second cooling member 6 is an annular structure, and a second air inlet 621 and a second air outlet 631 are symmetrically arranged on the outer side of the second cooling member 6. The internal air duct of the second cooling member 6 is completely separated by the symmetrically arranged first air shield 610 to form two independent spaces. A plurality of third air outlets 622 are evenly arranged on the inner side of the air inlet space 620, and a plurality of third air inlets 632 are arranged on the inner side of the air outlet space 630. Because it is blocked by the first air shield 610, the cooling air entering the air inlet space 620 through the second air inlet 621 all enters the area where the stator winding 4 and the rotor 2 are located inside the motor through the third air outlet 622, cools the stator winding 4 and the rotor 2, and then enters the interior of the air outlet space 630 through the third air inlet 632 again and is blown out from the second air outlet 631, taking away the heat generated by the copper loss of the stator winding 4, the loss of the magnetic steel 230 of the rotor 2, and other stray losses.

[0054] It should be noted that the diameters of the third air inlet 632 and the third air outlet 622 are smaller than those of the second air inlet 621. This ensures uniform ventilation and avoids the occurrence of ventilation on only one side. At the same time, the speed at which cooling air enters the air gap of the magnetic steel 230 is further increased under the condition of the same air volume, thereby improving the cooling effect on the stator winding 4, the rotor 2 magnetic steel 230, etc.

[0055] In this way, after the cooling air enters the air inlet space 620 through the second air inlet 621, it can only flow along a predetermined path due to the obstruction of the first wind shield 610, and evenly enters the area where the stator winding 4 and the rotor 2 are located inside the motor through the third air outlet 622. After the cooling air fully cools the stator winding 4 and the rotor 2 inside the motor, it enters the air outlet space 630 again through the third air inlet 632 and is discharged from the second air outlet 631, ensuring that the cooling air can fully and evenly cool the various components inside the motor, avoiding local overheating or insufficient cooling, improving the cooling efficiency, and effectively reducing the temperature inside the motor, thereby improving the operating efficiency and reliability of the motor. The uniform cooling of the stator winding 4 and the rotor 2 by the cooling air helps to reduce thermal stress and extend the service life of the motor.

[0056] In some embodiments of the present invention, reference Figure 3 A second windshield 623 is provided at the second air inlet 621, and the second windshield 623 divides the second air inlet 621 into two independent spaces; a third windshield 633 is provided at the second air outlet 631, and the third windshield 633 divides the second air outlet 631 into two independent spaces. For example, referring to Figure 3 A second windshield 623 is provided at the second air inlet 621, and the second windshield 623 divides the second air inlet 621 into two independent spaces, thereby also dividing the air inlet space 620 into two independent spaces that are symmetrical on both sides. A third windshield 633 is provided at the second air outlet 631, and the third windshield 633 divides the second air outlet 631 into two independent spaces, thereby also dividing the air outlet space 630 into two independent spaces that are symmetrical on both sides. The provision of the second windshield 623 and the third windshield 633 allows the cold air flow entering and leaving the second cooling member 6 to be more accurately controlled and distributed, ensuring that the cooling air can evenly cover the area that needs to be cooled. Dividing the second air inlet 621 and the second air outlet 631 into two independent spaces helps to reduce mutual interference and eddy current phenomena of the air flow during the cooling process, so that the cooling air can more efficiently pass through the internal air duct of the second cooling member 6 and fully exchange heat with the components that need to be cooled, thereby improving the cooling efficiency.

[0057] In some embodiments of the present invention, reference Figure 1 and Figure 3The outer ring of the second cooling member 6 is also provided with a positioning hole 640, which is used to install and fix the second cooling member 6 on the housing. By providing the positioning hole 640, the positioning hole 640 provides a clear reference point for installation, making the installation process simpler and faster. The installer can easily align the second cooling member 6 with the housing through the positioning hole 640 and fix it with appropriate fasteners (such as bolts, nuts, etc.). The second cooling member 6 is firmly installed on the housing through the positioning hole 640, which can enhance the structural stability of the entire cooling system.

[0058] In some embodiments of the present invention, reference Figure 1 and Figure 4 , an isolation mesh cover 7 is provided on one side of the housing end cover 1 close to the stator core 3, and the isolation mesh cover 7 is sleeved on the outer ring of the stator winding 4 and the second cooling member 6. Exemplarily, a motor housing is provided on the outer surface of the isolation mesh cover 7, and a fourth air inlet and a fourth air outlet are provided on the motor housing. In the present invention, suction air cooling is adopted by the cooling method of the first cooling member 5 and the second cooling zone member. Therefore, the air inlet of the external fan is connected with the fourth air outlet of the axial flux disc motor. It can be understood that the air inlet of the external fan is connected with the first air inlet 530 and the second air inlet 621. Therefore, an isolation mesh cover 7 is provided at the fourth air inlet of the axial flux disc motor to prevent various impurities from entering the axial flux disc motor and affecting the normal operation of the axial flux disc motor.

[0059] The contents described above may be implemented individually or in combination in various ways, and these variations are all within the protection scope of the present invention.

[0060] It should be noted that, in this article, relational terms such as first and second, etc. are only used to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Moreover, the terms "include", "comprise" or any other variants thereof are intended to cover non-exclusive inclusion, so that a process, method, article or device comprising a series of elements includes not only those elements, but also other elements not explicitly listed, or also includes elements inherent to such process, method, article or device. In the absence of further restrictions, the elements defined by the statement "comprise a ..." do not exclude the presence of other identical elements in the process, method, article or device comprising the elements.

[0061] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of the present invention, rather than to limit them. Although the present invention has been described in detail with reference to the above embodiments, a person skilled in the art should understand that the technical solutions described in the above embodiments can still be modified, or some of the technical features can be replaced by equivalents; and these modifications or replacements do not make the essence of the corresponding technical solutions deviate from the spirit and scope of the technical solutions of the embodiments of the present invention.

Claims

1. An axial flux disc motor cooling structure, characterized in that: include: Casing end cover (1); A rotor (2), the rotor (2) being inserted into the housing end cover (1), the rotor (2) comprising a rotor shaft (2) and a magnetic steel mounting plate (220) sleeved on the rotor shaft (2), the magnetic steel mounting plate (220) being provided with a plurality of mounting grooves (221), a plurality of magnetic steels (230) being arranged in the mounting grooves (221), a plurality of first heat dissipation ribs (223) being arranged on both end surfaces of the magnetic steel mounting plate (220) between two adjacent mounting grooves (221), each of the first heat dissipation ribs (223) extending along a diameter direction of the magnetic steel mounting plate (220); A stator core (3) is arranged between the housing end cover (1) and the magnetic steel mounting plate (220), the stator core (3) is sleeved on the rotor shaft (2), and a stator winding (4) is embedded in the stator core (3); A cooling part, the cooling part comprising a first cooling member (5) and a second cooling member (6), the first cooling member (5) being arranged between the housing end cover (1) and the stator core (3), and the second cooling member (6) being sleeved on the outer ring of the magnetic steel mounting plate (220).

2. The axial flux disc motor cooling structure according to claim 1, characterized in that: A step portion (222) is provided on the groove wall of the installation groove (221) extending along the diameter direction of the magnetic steel installation plate (220), and the side edge of the magnetic steel (230) is clamped in the step portion (222).

3. The axial flux disc motor cooling structure according to claim 1, characterized in that: A fiber sheath (240) is sleeved on the outer ring of the magnetic steel mounting plate (220), and the second cooling member (6) is sleeved on the outer ring of the fiber sheath (240).

4. The axial flux disc motor cooling structure according to claim 1, characterized in that: The first cooling member (5) comprises a fixed base plate (510), the fixed base plate (510) being sleeved on the rotor shaft (2), a plurality of flow diversion baffles (520) being arranged on a side of the fixed base plate (510) close to the casing end cover (1), the plurality of flow diversion baffles (520) being arranged concentrically with the center of a circle of the fixed base plate (510); The diversion baffle (520) is also provided with a first air inlet (530) and a first air outlet (540), and the first air inlet (530) and the first air outlet (540) are symmetrically arranged with respect to the center of the fixed bottom plate (510).

5. The axial flux disc motor cooling structure according to claim 4, characterized in that: A plurality of second heat dissipation ribs (550) are arranged between two adjacent flow dividing baffles (520), and the plurality of second heat dissipation ribs (550) are arranged concentrically with the center of the fixed bottom plate (510).

6. The axial flux disc motor cooling structure according to claim 5, characterized in that: At least one notch (551) is provided on each of the second heat dissipation ribs (550), and the notch (551) is used to connect the space between two adjacent second heat dissipation ribs (550) and / or the space between the second heat dissipation rib (550) and the diversion baffle (520).

7. The axial flux disc motor cooling structure according to claim 1, characterized in that: Two first wind shields (610) are arranged inside the second cooling member (6), the two first wind shields (610) are symmetrically arranged along the center of the second cooling member (6), and the two first wind shields (610) divide the internal space of the second cooling member (6) into an air inlet space (620) and an air outlet space (630); A second air inlet (621) is provided on the outer circle of the air inlet space (620), and a plurality of third air outlets (622) are provided on the inner circle of the air inlet space (620); The outer circle of the air outlet space (630) is provided with a second air outlet (631), and the inner circle of the air outlet space (630) is provided with a plurality of third air inlets (632).

8. The axial flux disc motor cooling structure according to claim 7, characterized in that: A second wind shield (623) is provided at the second air inlet (621), and the second wind shield (623) divides the second air inlet (621) into two independent spaces; A third wind shield (633) is provided at the second air outlet (631), and the third wind shield (633) divides the second air outlet (631) into two independent spaces.

9. The axial flux disc motor cooling structure according to claim 1, characterized in that: The outer ring of the second cooling member (6) is also provided with a positioning hole (640), and the positioning hole (640) is used to install and fix the second cooling member (6) on the casing.

10. The axial flux disc motor cooling structure according to claim 1, characterized in that: An isolation mesh cover (7) is provided on one side of the housing end cover (1) close to the stator core (3), and the isolation mesh cover (7) is sleeved on the outer rings of the stator winding (4) and the second cooling element (6).

Images