Motors, marine propulsion units and ships

Abstract

The present application provides a motor, a marine propeller and a ship. The motor includes: a casing, the casing having a cavity, and the cavity is provided with an insulating liquid; a stator, fixed in the cavity, and a rotating inner cavity is provided inside the stator; a stirring structure, rotatably arranged in the rotating inner cavity and at least partially immersed in the insulating liquid, for stirring the insulating liquid to contact the stator in a centrifugal motion or rotational form, so that the insulating liquid cools the stator. The stirring structure stirs the insulating liquid to the inner circumferential surface of the stator, so that the stator obtains the insulating liquid from the inner circumferential surface, so that the stator and the insulating liquid can be evenly contacted and heat exchanged. Since the insulating liquid is in contact with the casing, the insulating liquid transfers the heat of the stator to the casing, and the casing then transfers the heat to the outside of the motor, so that the insulating liquid effectively cools the stator.

Description

Technical Field

[0001] The present application relates to the field of electromechanical equipment, and in particular to a motor, a marine propeller and a ship. Background Art

[0002] At present, the motors are all cooled by cooling the casing, which absorbs the heat of the stator and rotor through the air, thereby cooling the stator and rotor. However, since the heat between the casing and the stator and rotor is conducted through air, and the heat conduction efficiency of air is low, the casing cannot effectively absorb the heat of the stator and rotor, making it difficult to reduce the temperature of the stator and rotor, affecting the working efficiency of the stator and rotor, resulting in a decrease in the overall efficiency of the motor. Summary of the invention

[0003] Embodiments of the present application provide a motor, a marine propeller, and a ship.

[0004] An embodiment of the present application provides a motor, wherein the motor comprises:

[0005] The casing has a cavity in which an insulating liquid is disposed;

[0006] The stator is fixed in the cavity, and a rotating inner cavity is provided inside the stator;

[0007] The stirring structure is rotatably arranged in the rotating inner cavity and at least partially immersed in the insulating liquid, and is used to stir the insulating liquid to contact the stator in the form of centrifugal motion or rotation, so that the insulating liquid cools the stator.

[0008] An embodiment of the present application provides a marine propulsion unit, wherein the marine propulsion unit includes the above-mentioned motor.

[0009] An embodiment of the present application provides a marine propeller, wherein the marine propeller includes a motor and a propeller, and the motor includes:

[0010] The casing has a cavity in which an insulating liquid is disposed;

[0011] The stator is fixed in the cavity, and a rotating inner cavity is provided inside the stator;

[0012] The rotor is rotatably disposed in the rotating inner cavity and electromagnetically cooperates with the stator. The rotor can drive the insulating liquid to contact the end of the stator in the form of centrifugal motion or rotational motion to cool the end of the stator;

[0013] A rotating shaft, one end of which is disposed in the cavity and fixed to the rotor, and the other end of which is used to output the rotating torque;

[0014] The propeller is connected to the rotating shaft and is used for receiving the rotational torque of the rotating shaft.

[0015] An embodiment of the present application provides a ship, wherein the ship comprises the above-mentioned marine propeller.

[0016] The motor of the embodiment of the present application is located on the inner side of the stator through the stirring structure, and the stirring structure stirs the insulating liquid to the inner peripheral surface of the stator, so that the stator obtains the insulating liquid from the inner peripheral surface, so that the stator and the insulating liquid can be in uniform contact and perform heat exchange. Since the insulating liquid is in contact with the casing, the insulating liquid conducts the heat of the stator to the casing, and the casing then conducts the heat to the outside of the motor, so that the insulating liquid effectively cools the stator. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] In order to more clearly illustrate the technical solutions in the embodiments of the present application or the background technology, the drawings required for use in the embodiments of the present application or the background technology will be described below.

[0018] Figure 1 A schematic cross-sectional view of a motor according to an embodiment of the present application;

[0019] Figure 2 A schematic diagram of a motor, a marine propulsion unit and a ship according to an embodiment of the present application;

[0020] Figure 3 for Figure 1 A schematic cross-sectional view of a motor according to an embodiment of the present invention;

[0021] Figure 4 for Figure 1 A schematic cross-sectional view of a motor according to another embodiment of the present invention;

[0022] Figure 5 for Figure 1 A schematic cross-sectional view of a motor according to another embodiment of the present invention;

[0023] Figure 6 A schematic cross-sectional view of a motor according to an embodiment of the present application;

[0024] Figure 7 for Figure 6 A schematic cross-sectional view of a motor according to an embodiment of the present invention;

[0025] Figure 8 for Figure 6 A schematic cross-sectional view of a motor according to another embodiment of the present invention;

[0026] Fig. 9 is a schematic cross-sectional view of a motor according to another embodiment of the present application;

[0027] Fig.10 A schematic cross-sectional view of a motor according to an embodiment of the present application;

[0028] Fig.11 for Fig.10A schematic cross-sectional view of a motor according to another embodiment of the present invention;

[0029] Fig.12 A schematic cross-sectional view of a motor according to an embodiment of the present application;

[0030] Fig.13 for Fig.12 A schematic cross-sectional view of a motor according to another embodiment of the present invention;

[0031] Fig.14 for Fig.12 A schematic cross-sectional view of a motor according to another embodiment of the present invention;

[0032] Fig.15 A schematic cross-sectional view of a motor according to an embodiment of the present application;

[0033] Fig.16 for Fig.15 A schematic cross-sectional view of a motor according to an embodiment of the present invention;

[0034] Fig.17 for Fig.15 A schematic cross-sectional view of a motor according to another embodiment of the present invention;

[0035] Fig.18 for Fig.15 A schematic cross-sectional view of a motor according to another embodiment of the present invention;

[0036] Fig.19 A schematic cross-sectional view of a motor according to an embodiment of the present application;

[0037] Fig. 20 for Fig.19 A partial enlarged schematic diagram of the X part of the motor;

[0038] Fig.21 A schematic cross-sectional view of a motor according to an embodiment of the present application;

[0039] Fig. 22 for Fig.21 A schematic cross-sectional view of a motor according to another embodiment of the present invention;

[0040] Fig.23 for Fig.21 A schematic cross-sectional view of a motor according to another embodiment of the present invention;

[0041] Fig.24 A schematic cross-sectional view of a motor according to an embodiment of the present application;

[0042] Fig.25 for Fig.24 A schematic cross-sectional view of a motor according to another embodiment;

[0043] Fig.26 is a schematic cross-sectional view of a motor according to an embodiment of the present application;

[0044] Fig. 27 for Fig.26 A cross-sectional schematic diagram of a first rotating ring of a motor according to an embodiment of the present invention;

[0045] Fig.28 for Fig.26 A cross-sectional schematic diagram of a first rotating ring of a motor according to another embodiment of the present invention;

[0046] Fig.29 for Fig.26 A cross-sectional schematic diagram of a first rotating ring of a motor according to another embodiment of the present invention;

[0047] Fig.30 is a schematic cross-sectional view of a motor according to another embodiment of the present application;

[0048] Fig.31 for Fig.30 A schematic cross-sectional view of a second rotating ring of a motor according to an embodiment;

[0049] Fig.32 for Fig.30 A schematic cross-sectional view of a second rotating ring of a motor according to an embodiment;

[0050] Fig.33 for Fig.31 A schematic diagram of a second rotating ring of a motor according to an embodiment;

[0051] Fig.34 for Fig.31 A three-dimensional schematic diagram of a second rotating ring of a motor according to an embodiment;

[0052] Fig.35 for Fig.34 A three-dimensional schematic diagram of a second rotating ring of a motor according to an embodiment;

[0053] Fig.36 for Fig.30 A schematic cross-sectional view of a second rotating ring of a motor according to an embodiment;

[0054] Fig.37 is a cross-sectional schematic diagram of a motor according to another embodiment of the present application;

[0055] Fig.38 for Fig.37 A cross-sectional schematic diagram of a third rotating ring of the motor;

[0056] Fig.39 for Fig.38 A schematic cross-sectional view of a third rotating ring of a motor according to another embodiment of the present invention;

[0057] Fig.40 for Fig.37 A schematic cross-sectional view of a third rotating ring of a motor according to another embodiment of the present invention;

[0058] Fig.41 is a schematic cross-sectional view of a motor according to an embodiment of the present application;

[0059] Fig.42 is a schematic cross-sectional view of a motor according to an embodiment of the present application;

[0060] Fig.43 is a schematic cross-sectional view of a motor according to an embodiment of the present application;

[0061] Fig.44 for Fig.43 A schematic cross-sectional view of a motor according to another embodiment;

[0062] Fig.45 is a schematic cross-sectional view of a motor according to an embodiment of the present application;

[0063] Fig.46 is a cross-sectional schematic diagram of a motor according to another embodiment of the present application;

[0064] Fig.47 A schematic cross-sectional view of a motor according to an embodiment of the present application;

[0065] Fig.48 It is an exploded schematic diagram of a motor according to an embodiment of the present application;

[0066] Fig.49 A schematic diagram of a marine propulsion device according to an embodiment of the present application;

[0067] Fig.50 Another schematic diagram of a marine propulsion system according to an embodiment of the present application;

[0068] Fig.51 Another schematic diagram of a marine propulsion system according to an embodiment of the present application;

[0069] Fig.52 A schematic diagram of a marine propeller according to another embodiment of the present application;

[0070] Fig.53 Another schematic diagram of a motor for a marine propulsion device according to an embodiment of the present application;

[0071] Fig.54 for Fig.53 A schematic diagram of a motor for a marine propulsion system according to another embodiment of the present invention;

[0072] Fig.55 A schematic diagram of a marine propeller according to another embodiment of the present application;

[0073] Fig.56 A schematic diagram of a marine propeller according to another embodiment of the present application;

[0074] Fig.57A schematic diagram of a marine propulsion device according to an embodiment of the present application;

[0075] Fig.58 A schematic diagram of a ship according to an embodiment of the present application;

[0076] Fig.59 A schematic diagram of a ship according to another embodiment of the present application;

[0077] Fig.60 This is a schematic diagram of a ship according to another embodiment of the present application.

[0078] Motor 1000, housing 100, cavity 110, insulating liquid 120, inner surface 130, outer surface 131, first end cover 141, side shell 142, second end cover 143, first open end 1421, second open end 1422, end cover 149, open end 1429, closed end 1428, shaft hole 150, first bearing support 1411, first sealing flange 1412, second bearing support 1431, stator 200, rotating inner cavity 210, coil winding 220, iron core 230, column 240, stator magnet 250, first opening 211, second opening 212, stirring structure 300, ship propeller 2000, ship 3000, rotor 400, rotor coil winding 410, magnetic member 420 , rotor bracket 430, slot 431, shaft 500, first end 510, second end 520, first bearing 530, second bearing 540, elastic washer 550, propeller 2100, load shaft 600, first shaft body 310, seal 700, through hole 701, first sealing lip 710, second sealing lip 720, first sealing ring 730, second sealing ring 740, sealing washer 750, first bottom ring 731, first side ring 732, second bottom ring 741, second side ring 742, first rotating ring 330, first outer peripheral surface 331, first matching hole 332, groove 3311, convex hull 3312, second rotating ring 340, boss 341, second matching hole 342, second outer peripheral surface 343, boss Top surface 3411, first boss side surface 3412, second boss side surface 3413, first boss 344, second boss 345, first boss end surface 3414, second boss end surface 3415, third rotating ring 350, inner cavity 351, through hole 352, third matching hole 353, third outer peripheral surface 354, first inner side surface 3511, second inner side surface 3512, arc inner wall 3513, arc bottom wall 3514, first top inner wall 3515, second top inner wall 3516, first side 3311, second side 3312, center line 3313, balance plate 360, first outer side surface 361, second outer side surface 362, outer end surface 363, first balance plate 364, second balance plate 365, weight reduction hole 440, drainage hole 370, cooling channel 190, first stirring structure 301, second stirring structure 302, first fixing sleeve 500, second fixing sleeve 600, bearing baffle 700, first connecting plate 1419, first sealing groove 1418, first rubber ring 1417, second rubber ring 1427, support tube 800, wire cavity 810, stabilizing plate 900, driver 2200, radiator 2300, rotating ring 390, hull 3100, power supply 3200, steering mechanism 3300, control end 3310, steering bracket 3320, steering shaft 3330, tilting mechanism 3400, tilting control end 3410, tilting shaft 3420, interactive system 3500, first blocking member 1100, first isolation plate 1101, cylindrical surface 1102,The first blocking surface 1103, the second isolation plate 1104, the second blocking surface 1105, the second blocking member 1200, the third isolation plate 1201, the third blocking member 1300, and the fourth isolation plate 1202. DETAILED DESCRIPTION

[0079] Unless otherwise defined, all technical and scientific terms used herein have the same meaning as those commonly understood by technicians in the technical field of the embodiments of the present application; the terms used herein in the description of the embodiments of the present application are only for the purpose of describing specific embodiments and are not intended to limit the embodiments of the present application; the terms "including" and "having" in the description and claims of the embodiments of the present application and the above-mentioned drawings and any variations thereof are intended to cover non-exclusive inclusions. The terms "first", "second", etc. in the description and claims of the embodiments of the present application or the above-mentioned drawings are used to distinguish different objects, not to describe a specific order.

[0080] Reference to "embodiments" herein means that a particular feature, structure, or characteristic described in conjunction with the embodiments may be included in at least one embodiment of the embodiments of the present application. The appearance of the phrase in various locations 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.

[0081] In order to enable those skilled in the art to better understand the embodiments of the present application, the technical solutions in the embodiments of the present application will be clearly and completely described below in conjunction with the drawings in the embodiments of the present application.

[0082] It is understandable that the motor converts electrical energy into magnetic field energy through electromagnetic effect, and the magnetic field energy is then converted into mechanical energy. Due to the efficiency ratio of energy conversion, part of the energy will be converted into heat energy, so the heat energy needs to be conducted away in time, otherwise the heat energy will accumulate inside the motor, causing the internal temperature of the motor to rise. Since the internal structural parts of the motor will inevitably reduce efficiency in a high temperature environment, the efficiency ratio will be further reduced, which will further increase the heat energy, leading to a vicious cycle of motor operation and ultimately causing the motor to fail. Traditional motors generally use water to conduct heat and cool the motor. However, since the internal structural parts of the motor are easily corroded by water, water cannot directly enter the internal cavity of the motor for cooling. Water cooling mainly uses a water pump to transport external circulating water to the outside of the motor casing or the closed circulating flow channel inside the motor, thereby indirectly cooling the fixed structural parts in the motor. Therefore, the water cooling of the motor is an indirect cooling method, and its cooling effect is not good.

[0083] Lubricating oil is usually provided inside the motor to lubricate the internal components of the motor, reduce the internal resistance of the motor, and improve the efficiency of the motor. The lubricating oil inside the motor also conducts heat to the internal components of the motor, allowing the heat of the internal components of the motor to be transferred to the motor casing, which then conducts the heat away to cool the motor. Since the lubricating oil inside the motor mainly acts on the components that move in coordination with each other inside the motor, there is less contact with the components that do not move in coordination with each other inside the motor, and thus the cooling efficiency of the components that do not move in coordination with each other inside the motor is low. Therefore, the effect of cooling with the lubricating oil inside the motor is not good.

[0084] See also Figure 1 In order to solve the problem of increasing the internal temperature of the motor and improve the operating efficiency of the motor, the embodiment of the present application provides a motor 1000, and the motor 1000 includes:

[0085] The housing 100 has a cavity 110, and the cavity 110 is provided with an insulating liquid 120;

[0086] The stator 200 is fixed in the cavity 110, and a rotating inner cavity 210 is provided inside the stator 200;

[0087] The stirring structure 300 is rotatably disposed in the rotating inner cavity 210 and at least partially immersed in the insulating liquid 120 , and is used to stir the insulating liquid 120 to contact the stator 200 in a centrifugal motion or rotational form, so that the insulating liquid 120 cools the stator 200 .

[0088] Please also read Figure 1 and Figure 2 , an embodiment of the present application provides a motor 1000, which is applied to a marine propeller 2000, so that the marine propeller 2000 propels a ship 3000 to move. The marine propeller 2000 can be installed inside a ship or outside a ship. In the embodiment of the present application, the marine propeller 2000 is intended to obtain the mechanical kinetic energy of the motor 1000, drive the propeller 2100 to rotate, and propel the ship 3000 to move when the propeller 2100 enters underwater, and the position where the marine propeller 2000 is installed on the ship 3000 is not specifically limited. The ship 3000 that can be propelled by the ship 3000 propeller can be a yacht, a passenger ship, a bamboo raft, a kayak, and all other water transportation vehicles that are not specifically limited.

[0089] The motor 1000 of the embodiment of the present application is located inside the stator 200 through the stirring structure 300. When the stirring structure 300 rotates, the stirring structure 300 stirs the insulating liquid 120 along the circumference of the stator 200 to the inner circumferential surface of the stator 200, so that the insulating liquid 120 is obtained from the entire inner circumferential surface of the stator 200, so that the stator 200 and the insulating liquid 120 can be in uniform contact and heat exchange; when the stirring structure 300 does not rotate, the stator 200 is at least partially immersed in the insulating liquid 120, so that the stator 200 and the insulating liquid 120 exchange heat. Since the insulating liquid 120 is in contact with the housing 100, the insulating liquid 120 conducts the heat of the stator 200 to the housing 100, and the housing 100 then conducts the heat to the outside of the motor 1000, so that the insulating liquid 120 effectively cools the stator 200. Obviously, by using the stirring structure 300 to stir the insulating liquid 120 onto the stator 200, the non-moving components inside the motor 1000 can be cooled, which is different from the current cooling solution using lubricating oil, where the lubricating oil exists between the rotating shaft and the bearing, and the lubricating oil cannot cool the stator. The motor 1000 of the present application uses the stirring structure 300 to stir the insulating liquid 120 to cool the stator 200, so that the cooling efficiency is improved, thereby improving the efficiency of the motor 1000.

[0090] In the present embodiment, the casing 100 has an inner surface 130. The cavity 110 is formed in the space enclosed by the inner surface 130. The casing 100 also has an outer surface 131 opposite to the inner surface 130. The outer surface 131 can be in contact with air, water, or cooling oil, that is, the motor 1000 can be in an air environment, an underwater environment, or an oil-cooled environment. The outer surface 131 of the motor 1000 can be in contact with any medium having thermal conductivity, and the embodiments of the present application do not limit the thermal conductive medium that the outer surface 131 contacts. The casing 100 contacts the external thermal conductive medium through the outer surface 131, so that the thermal conductive medium conducts away the heat of the casing 100, thereby cooling the motor 1000. Of course, it is understandable that a heat-conducting medium may be arranged between the inner surface 130 and the outer surface 131, and the heat-conducting medium may contact the casing 100 between the outer surface 131 and the inner surface 130, so as to conduct away heat and cool the casing 100. The motor 1000 of the embodiment of the present application is not limited to the above-defined form for any heat-conducting medium in contact with the casing 100. Any medium that is intended to perform heat exchange with the casing 100 and conduct away the heat absorbed by the insulating liquid 120 by the casing 100 may be used as an implementation method of the embodiment of the present application.

[0091] Specifically, Figure 3As shown, the housing 100 includes a first end cover 141, a side housing 142, and a second end cover 143. The side housing 142 has a first open end 1421 and a second open end 1422 opposite to the first open end 1421. The first end cover 141 and the second end cover 143 are respectively covered with the first open end 1421 and the second open end 1422, so that the cavity 110 is a closed cavity formed between the first end cover 141, the side housing 142, and the second end cover 143. As an embodiment, the first end cover 141 and the second end cover 143 are sealed and covered with the first open end 1421 and the second open end 1422, so that the cavity 110 is a sealed cavity.

[0092] In another embodiment, Figure 4 As shown, the housing 100 may be provided with an end cover 149, the side housing 142 has an open end 1429 sealed with the end cover 149 and a closed end 1428 opposite to the open end 1429, and the cavity 110 is formed between the end cover 149 and the side housing 142, so that the cavity 110 is a sealed cavity.

[0093] It is understandable that by setting the cavity 110 as a sealed cavity, the insulating liquid 120 will not leak out in the cavity 110, thereby keeping the thermal conductivity of the insulating liquid 120 unchanged, so that the cooling efficiency of the motor 1000 is guaranteed.

[0094] In this embodiment, the insulating liquid 120 is a non-conductive fluid, and the insulating liquid 120 will not cause a short circuit in the internal circuit of the motor 1000. The insulating liquid 120 has flowability, and the insulating liquid 120 will contact a part of the stator 200 when it is not stirred by the stirring structure 300. When the insulating liquid 120 is stirred by the stirring structure 300, due to the flowability of the insulating liquid 120, after contacting the stator 200, it can flow to the inner surface 130, thereby taking away the heat of the stator 200 and achieving cooling. The insulating liquid 120 also has a lubricating effect, so as to lubricate the moving parts inside the housing 100 and reduce the damping force, thereby improving the operating efficiency of the motor 1000. Specifically, the insulating liquid 120 can be any liquid with thermal conductivity and insulation properties, such as motor oil, vegetable oil, mineral oil, silicone oil, etc. In the embodiments provided in the present application, the composition of the insulating liquid 120 is not limited to the above-defined forms, and any liquid that is heat-conductive, insulating, and flowable can be used as an implementation of the insulating liquid 120 in the embodiments of the present application.

[0095] In this implementation, please continue to refer to Figure 3, the stator 200 can be installed in the side shell 142 from the first opening end 1421 or the second opening end 1422. The stator 200 can be fixed directly or indirectly to the inner wall of the side shell 142. The stator 200 is an annular cylindrical structure, that is, the rotating inner cavity 210 has a first opening 211 in the same direction as the first opening end 1421 and a second opening 212 in the same direction as the second opening end 1422. The first opening 211 and the second opening 212 are both used to allow the rotating shaft of the motor 1000 to pass through, so that the rotating shaft of the motor 1000 can output power. The first opening 211 and the second opening 212 are also used to allow the insulating liquid 120 to enter the rotating inner cavity 210, so that the stirring structure 300 can stir the insulating liquid 120. In the embodiment of the present application, the stator 200 can be a permanent magnet, an electromagnet, or a magnetic conductor. In the embodiments of the present application, the specific presentation form of the stator 200 is not limited to the form described above, and any stator that can provide driving force for the motor 1000 can be used as an implementation method of the embodiments of the present application.

[0096] In this embodiment, the stirring structure 300 can rotate in the rotating inner cavity 210. The rotation axis of the stirring structure 300 is coaxially arranged with the axis of the stator 200. The rotation axis of the stirring structure 300 is an axis around which the stirring structure 300 can rotate. The axis 201 of the stator 200 is an axis that is equidistant from the inner circumferential surface of the stator 200. The stirring structure 300 has an outer end away from its rotation axis. There is a spacing between the outer end and the inner circumferential surface of the stator 200, and the spacing can be an assembly gap between the stirring structure 300 and the stator 200. By setting a spacing between the outer end and the inner circumferential surface of the stator 200, the stirring structure 300 can rotate in the rotating inner cavity 210. When the stirring structure 300 rotates, the outer end can contact the insulating liquid 120, thereby ensuring that the stirring can stir the insulating liquid 120. It is understandable that the stirring structure 300 can be a regular cylindrical structure, and the circumference of the stirring structure 300 is at the same distance from its axis; when the stirring structure 300 is stationary, the outer end always remains at least partially immersed in the insulating liquid 120. The stirring structure 300 can also be an irregular special-shaped structure, such as a triangular prism, a square column, a pentagonal body, etc.; when the stirring structure 300 is stationary relative to the housing 100, the outer end can be immersed in the insulating liquid 120, or can be staggered with the insulating liquid 120. In the embodiments of the present application, the structural form of the stirring structure 300 is not limited to the above-mentioned limited manner, and any stirring structure 300 that is intended to rotate in the rotating inner cavity 210 and can stir the insulating liquid 120 can be used as an implementation of this embodiment.

[0097] It is understandable that when the insulating liquid 120 does not fill the cavity 110 and the stirring structure 300 does not stir the insulating liquid 120, the insulating liquid 120 accumulates in the cavity 110 due to gravity, and the motor 1000 is in Figure 3 In the horizontal state shown (i.e., the axis 201 of the stator 200 is horizontally arranged), the insulating liquid 120 at least immerses a portion of the inner circumferential surface of the stator 200, and then the insulating liquid 120 can enter the rotating inner cavity 210, and the stirring structure 300 in the rotating inner cavity 210 can also contact the insulating liquid 120. In other words, when the motor 1000 is in Figure 3 In the state shown, the distance from the upper surface of the insulating liquid 120 to the axial center of the stator 200 is smaller than the distance from the inner circumferential surface of the stator 200 to the axial center of the stator 200, and the distance from the upper surface of the insulating liquid 120 to the axial center of the stator 200 is smaller than the distance from the outer end of the stirring structure 300 to the axial center of the stirring structure 300, so that the outer end of the stirring structure 300 can definitely contact the insulating liquid 120.

[0098] In the embodiment provided in the present application, the insulating liquid 120 may be filled in the cavity 110 or may not be filled in the cavity 110. The amount of the insulating liquid 120 injected into the cavity 110 is set according to the distance from the outer end to the axial center of the stirring structure 300, that is, to ensure that the stirring structure 300 can stir the insulating liquid 120.

[0099] like Figure 3 and Figure 4 As shown, when the insulating liquid 120 does not fill the cavity 110, the stirring structure 300 rotates around its axis to stir part of the insulating liquid 120 to perform centrifugal motion with the axis of the stator 200 as the center of the circle, and finally swings away to the surrounding of the stirring structure 300, so that part of the insulating liquid 120 is swung away to the inner circumferential surface of the stator 200 around the stirring structure 300 in a centrifugal motion, so that the inner circumferential surface of the stator 200 corresponding to the stirring structure 300 in the circumferential direction is evenly contacted with the insulating liquid 120, and the insulating liquid 120 can continue to penetrate from the inner circumferential surface of the stator 200 in the direction away from the stirring structure 300, and finally the insulating liquid 120 absorbs the heat of the stator 200 and flows back into the housing 100, so that the housing 100 quickly absorbs the heat of the stator 200, and the stator 200 can be quickly and evenly cooled, thereby improving the operating efficiency of the motor 1000. It is understandable that when the stirring structure 300 stirs the insulating liquid 120 to the inner circumferential surface of the stator 200, part of the insulating liquid 120 may hit the inner circumferential surface of the stator 200 under high-speed motion and splash onto the surfaces of other components in the casing 100, thereby cooling down the other components in the casing 100. For example, part of the insulating liquid 120 thrown away by the stirring structure 300 may hit the inner circumferential surface of the stator 200 and splash onto the inner wall of the cavity 110, the rotating shaft, the rotor, the bearing and other components, or part of the insulating liquid 120 may be directly thrown off from the surface of the stirring structure 300 to the inner wall of the cavity 110.

[0100] like Figure 5As shown, when the insulating liquid 120 fills the cavity 110, the stirring structure 300 rotates around its axis to stir the insulating liquid 120 to rotate around the axis of the stator 200 in the cavity 110, and the insulating liquid 120 can contact the entire surface of the stator 200, and the insulating liquid 120 transfers the heat of the stator 200 to the housing 100 in a rotational motion, so that the housing 100 can quickly absorb the heat of the stator 200, so that the housing 100 can quickly conduct the heat of the stator 200, thereby achieving rapid and effective cooling of the motor 1000, thereby improving the efficiency of the motor 1000.

[0101] See also Figure 6 In one embodiment, a coil winding 220 is provided at the end of the stator 200, and the coil winding 220 is used to generate a magnetic field after being energized, and the stirring structure 300 stirs the insulating liquid 120 and at least contacts the coil winding 220. The motor 1000 also includes a conductive cable connected to the coil winding 220, and one end of the conductive cable away from the coil winding 220 passes through the housing 100 and is connected to the driver 2200 outside the motor 1000 to obtain current from the driver 2200. The driver 2200 is an integrated circuit that can actively work to control the motor 1000 to work according to the set direction, speed, angle, and response time, that is, the driver 2200 inputs current to the coil winding 220 to control the direction, speed, angle, and response time of the motor 1000. Since the coil winding 220 needs a long time to convert electrical energy into magnetic field energy, the heat generated by the coil winding 220 is most obvious inside the motor 1000, so it is easy to concentrate the heat generated inside the motor 1000 on the coil winding 220. The stirring structure 300 of the embodiment of the present application stirs the insulating liquid 120 to at least contact the coil winding 220, that is, it is ensured that the stirring structure 300 stirs the insulating liquid 120 to cool the coil winding 220, thereby ensuring that the place where the heat generated inside the motor 1000 is concentrated is cooled first, thereby ensuring the operating efficiency of the motor 1000.

[0102] As an implementation method, Figure 7As shown, the stator 200 is also provided with an iron core 230, and the coil winding 220 is arranged on the iron core 230. Specifically, the end of the iron core 230 is provided with a column 240 arranged circumferentially around the axis of the stator 200, and the coil winding 220 is wound on the column 240. There is an assembly gap between the stator 200 and the inner wall of the side shell 142, and the assembly gap allows the insulating liquid 120 to flow in, so that the insulating liquid 120 that absorbs the heat of the stator 200 can quickly flow into the assembly gap, so that the heat of the stator 200 can be quickly conducted to the side shell 142. Of course, the iron core 230 of the stator 200 can also be directly in contact with the inner wall of the side shell 142, so that the heat of the coil winding 220 can be conducted to the side shell 142 through the iron core 230. The coil winding 220 is provided at both opposite ends of the stator 200 to ensure that the magnetic field of the stator 200 is evenly arranged in the motor 1000. The first opening 211 and the second opening 212 of the rotating inner cavity 210 are respectively arranged at two opposite ends of the stator 200. In order to make the coil windings 220 at both ends of the stator 200 contact with the insulating liquid 120 for cooling, the motor 1000 is provided with two stirring structures 300, and the two stirring structures 300 respectively stir the insulating liquid 120 to contact the coil windings 220 at two opposite ends of the stator 200. In order to ensure the assembly relationship between the coil windings 220 and the side shell 142, there must be a gap between the coil windings 220 and the inner wall of the side shell 142, that is, the coil windings 220 are not directly in contact with the side shell 142, so the coil windings 220 need to be stirred by the stirring structure 300 to contact with the insulating liquid 120 to cool down.

[0103] In another embodiment, see Figure 8 ,and Figure 7 The embodiments shown are substantially the same, except that the core 230 is provided with a plurality of columns 240 extending from one end of the stator 200 to the other end, the plurality of columns 240 are arranged equidistantly around the axis of the stator 200, and the coil windings 220 are wound on the plurality of columns 240, so that the coil windings 220 are arranged from one end of the stator 200 to the other end of the stator 200, that is, the coil windings 220 are not only arranged at the end of the stator 200, but are wound along the entire axial direction of the stator 200. In order to ensure that the coil windings 220 are effectively cooled, the stirring structure 300 can also extend from the first opening 211 of the rotating inner cavity 210 to the second opening 212. The stirring structure 300 may be provided with magnetic parts so that the stator 200 and the stirring structure 300 cooperate electromagnetically, so that the stirring structure 300 outputs a rotational torque, that is, the stirring structure 300 may output a rotational torque as the rotor of the motor 1000. At the same time, the stirring structure 300 may also stir the insulating liquid 120 to cool the coil winding 220 of the stator 200.

[0104] In another embodiment, Figure 8The embodiments shown are substantially the same, except that the coil windings 220 are arranged from one end to the other end of the stator 200, but the coil windings 220 are denser at the two opposite ends of the stator 200, that is, the coil windings 220 still generate a large amount of heat at the ends of the stator 200. To ensure that the ends of the stator 200 are cooled, the motor 1000 is provided with two stirring structures 300, which are respectively arranged near the two opposite ends of the stator 200, and stir the insulating liquid 120 to cool the two opposite ends of the stator 200.

[0105] It can be understood that the stirring structure 300 of the present application is accommodated in the rotating inner cavity 210 and is not limited to the above method. As shown in Figure 9, the stirring structure 300 can also be partially accommodated in the rotating inner cavity 210 and close to the end of the stator 200. The stirring structure 300 can still partially stir the insulating liquid 120 to the end of the stator 200 for cooling, and the part of the stirring structure 300 extending out of the rotating inner cavity 210 can effectively cool other components inside the cavity 110, thereby making the cooling and heat dissipation efficiency of the motor 1000 better.

[0106] See also Fig.10 In this embodiment, the motor 1000 further includes a rotor 400, which is rotatably disposed in the rotating inner cavity 210 and electromagnetically cooperates with the stator 200, and the stirring structure 300 and the rotor 400 can rotate synchronously. The axis of the rotor 400 is coaxially arranged with the axis of the stator 200. The axis of the rotor 400 is the axis around which the rotor 400 can rotate. Since the rotor 400 is located in the rotating inner cavity 210, when the coil winding 220 of the stator 200 is energized, the coil winding 220 generates an alternating magnetic field, and the rotor 400 and the coil winding 220 electromagnetically cooperate, so that the rotor 400 rotates relative to the stator 200 under the force of the magnetic field, so that the rotor 400 can output a rotational torque to convert the magnetic field energy into mechanical energy. The stirring structure 300 rotates synchronously with the rotor 400, which can ensure that the stirring is at the same speed as the rotor 400, avoiding the speed difference between the stirring structure 300 and the rotor 400, thereby ensuring that the rotation speed of the stirring structure 300 is maximized, and increasing the weight of the insulating liquid 120 stirred by the stirring structure 300 per unit time, so that more insulating liquid 120 can contact the stator 200 for cooling, thereby improving the cooling efficiency of the motor 1000. It can be understood that the stirring structure 300 can rotate under the rotation of the rotor 400, that is, the rotor 400 drives the stirring structure 300 to rotate synchronously, thereby ensuring that the rotation speed of the stirring structure 300 is maximized, so as to ensure that the cooling efficiency of the motor 1000 is maximized.

[0107] Of course, another implementation method can also be provided. Fig. 9The embodiments shown are substantially the same, except that the stirring structure 300 itself is electromagnetically coordinated with the stator 200, so that the stirring structure 300 itself is rotated by the electromagnetic force, and the rotation speed of the stirring structure 300 can be greater than the rotation speed of the rotor 400, so that the stirring structure 300 converts part of the electrical energy into rotational mechanical energy, and uses the rotational mechanical energy to stir the insulating liquid 120 to cool the stator 200. It can be understood that the stirring structure 300 can be provided with a rotating coil winding, or a rotating permanent magnet, and the rotating coil winding or the rotating permanent magnet is electromagnetically coordinated with the coil winding 220 of the stator 200, so that the stirring structure 300 obtains a rotational driving force. It can be understood that in this embodiment, the rotor 400 is mainly responsible for outputting the rotational torque, and the stirring structure 300 is mainly responsible for outputting the rotational energy of stirring the insulating liquid 120. The rotor 400 and the stirring structure 300 are independent of each other and are also asynchronous, but the rotation speed of the stirring structure 300 needs to be greater than that of the rotor 400 to ensure cooling efficiency. The stirring structure 300 can adopt a rotating structure that rotates at high speed and generates little heat, that is, part of the electric energy can be used to drive the stirring structure 300 to rotate, thereby conducting away the heat energy, so that the efficiency of the motor 1000 outputting mechanical energy is improved.

[0108] In another embodiment, see Fig.11 ,and Fig.10 The embodiment shown in the figure is substantially the same, except that the stator 200 is provided with a stator magnet 250, and the rotor 400 is provided with a rotor coil winding 410. The stirring structure 300 stirs the insulating liquid 120 to contact the stator magnet 250, so as to effectively cool the stator magnet 250. In the embodiments of the present application, the form of the stator 200 and the rotor 400 is not limited to the above, and any structural form that aims to output a rotation torque through electromagnetic cooperation between the stator 200 and the rotor 400 can be used as an embodiment of the present application.

[0109] It is understandable that the motor 1000 of the embodiment of the present application is not limited to the above manner, and any motor 1000 with similar functions to the above embodiments or any structural form combined with the motor 1000 of the above embodiments can be used as the embodiment of the present application. The type of the motor 1000 of the embodiment of the present application is also not limited, for example, the motor 1000 is a synchronous motor, an asynchronous motor, a high-speed motor, a flat wire motor, and a low-voltage motor can all be used as the embodiment of the motor 1000 of the present application.

[0110] For further information, see Fig.12The motor 1000 further includes a rotating shaft 500, one end of which is disposed in the cavity 110, and the rotor 400 and the stirring structure 300 are both fixed to the circumference of the rotating shaft 500. The rotating shaft 500 serves as a rotation torque output shaft of the motor 1000, and the axis of the rotating shaft 500 is coaxially arranged with the axis of the stator 200 and the axis of the rotor 400. The rotor 400 and the stirring structure 300 are both fixed to the circumference of the rotating shaft 500, so that the rotor 400 rotates under the electromagnetic force and drives the rotating shaft 500 to rotate, and the rotating shaft 500 drives the stirring structure 300 to rotate, and the rotating shaft 500 outputs the rotation torque.

[0111] In one embodiment, the rotating shaft 500 has a first end 510 and a second end 520 arranged opposite to the first end 510. The first end 510 passes through the first end cover 141, and a first bearing 530 is arranged between the first end cover 141. The second end 520 is accommodated in the cavity 110, and the second end 520 extends out of the second opening 212 of the stator 200 and extends into the second end cover 143, and a second bearing 540 is arranged between the second end 520 and the second end cover 143. An elastic washer 550 is also arranged between the second bearing 540 and the second end cover 143, and the elastic washer 550 is used to buffer and absorb the lateral vibration of the rotating shaft 500. The rotor 400 and the stirring structure 300 are sleeved and fixed on the rotating shaft 500, and are located between the first end 510 and the second end 520.

[0112] In one embodiment, the stirring structure 300 and the rotor 400 are both fixed to the circumferential side of the rotating shaft 500, so as to ensure that the stirring structure 300 and the rotor 400 rotate synchronously, and the stirring structure 300 is driven to rotate by the rotational torque output by the rotating shaft 500, so that a smaller portion of the mechanical energy can be utilized, and the insulating liquid 120 can be stirred from the rotating inner cavity 210 of the stator 200 to the inner circumferential surface of the stator 200 through the stirring structure 300, so as to maximize the cooling efficiency of the stator 200, and further improve the mechanical energy output, form a virtuous circle, and improve the energy efficiency ratio of the motor 1000.

[0113] Further, in Fig.12 In the illustrated embodiment, the housing 100 is provided with a shaft hole 150 , one end of the shaft 500 extends out of the housing 100 from the shaft hole 150 , and the end of the shaft 500 extending out of the housing 100 is used to output a rotational torque.

[0114] Specifically, the shaft hole 150 is provided on the first end cover 141. A first bearing support 1411 is provided on the inner side of the first end cover 141, and the first bearing 530 is fixed to the first bearing support 1411. The first end 510 passes through the first bearing 530 and the shaft hole 150 in sequence, so as to ensure the rotation torque output efficiency of the first shaft 500 and prevent the first shaft 500 from shaking. The second end cover 143 is provided with a second bearing support 1431, and the second bearing 540 is fixed to the second bearing support 1431, and an elastic washer 550 is provided between the second bearing 540 and the second bearing support 1431. In order to avoid friction between the inner wall of the shaft hole 150 and the outer peripheral side wall of the shaft 500, the inner wall of the shaft hole 150 and the outer peripheral side wall of the shaft 500 are clearance-matched to ensure the effective rotation of the shaft 500. The first end 510 extends out of the housing 100 and can be directly connected to the load, or can be connected to the load through a coupling. In this embodiment, the load may be the propeller 2100 , that is, the motor 1000 drives the propeller 2100 to rotate, thereby outputting propulsion force for the ship 3000 .

[0115] In another embodiment, see Fig.13 ,and Fig.12 The embodiments shown are substantially the same, except that the stirring structure 300 is provided with a first shaft 310 passing through the first end cover 141 and a second shaft 320 passing through the rotor 400. The end of the first shaft 310 is used to output the rotation torque. The second shaft 320 is fixed to the rotor 400 to receive the rotation torque of the rotor 400, so that the rotor 400 drives the stirring structure 300 to rotate. The first shaft 310 of the stirring structure 300 at the other end is rotationally matched with the second end cover 143.

[0116] Of course, in another embodiment, see Fig.14 ,and Fig.12 The illustrated embodiments are substantially the same, except that the first end 510 and the second end 520 are both contained in the cavity 110. The motor 1000 further includes a load shaft 600, one end of which passes through the first end cover 141, extends into the cavity 110, and is connected to the first end 510 via a coupling, so that the load shaft 600 rotates synchronously with the shaft 500. It is understood that in the embodiments of the present application, the method of outputting the rotational torque of the motor 1000 is not limited to the above direct output through the shaft 500, or output through the first shaft 310 of the stirring structure 300, or output through the coupling connected to other shafts, and any structural form that aims to output the rotational torque of the rotor 400 to the load end through a rigid structure can be used as an embodiment of the motor 1000 of the present application.

[0117] For further information, see Fig.15The motor 1000 includes a first blocking member 1100 , which is fixed to the rotating shaft 500 and is located between the stirring structure 300 and the rotating shaft hole 150 to prevent the stirring structure 300 from swinging the insulating liquid 120 to the rotating shaft hole 150 .

[0118] In this embodiment, the first blocking member 1100 covers the stirring structure 300 , so that the first blocking member 1100 forms a “barrier” between the stirring structure 300 and the shaft hole 150 , so as to effectively prevent the insulating liquid 120 thrown off the stirring structure 300 from splashing toward the shaft hole 150 . It can be understood that when the cavity 110 is not filled with the insulating liquid 120, the stirring structure 300 stirs the insulating liquid 120 to swing it circumferentially toward the inner circumferential surface of the stator 200, and part of the insulating liquid 120 collides with the stator 200 in a high-speed motion state and splashes in other directions, and part of the insulating liquid 120 leaves the outer end of the stirring structure 300 and splashes directly toward the inner wall of the casing 100, and the splashed insulating liquid 120 moves toward the shaft hole 150. If there is no first blocking member 1100 between the stirring structure 300 and the shaft hole 150, part of the insulating liquid 120 will leak out of the shaft hole 150, resulting in loss of the insulating liquid 120, and the loss of the insulating liquid 120 will reduce the heat dissipation efficiency of the motor 1000 and affect the operating efficiency of the motor 1000. Therefore, a first blocking member 1100 is provided between the stirring structure 300 and the rotating shaft hole 150, so that when the cavity 110 is not filled with the insulator, the insulating liquid 120 can be effectively prevented from splashing and leaking toward the rotating shaft hole 150 after being stirred by the stirring structure 300. Specifically, the first blocking member 1100 is tightly connected to the rotating shaft 500 to prevent the insulating liquid 120 from flowing from the gap between the first blocking member 1100 and the rotating shaft 500 to the rotating shaft hole 150, thereby effectively preventing the insulating liquid 120 from leaking and reducing the loss efficiency of the insulating liquid 120. Since the first blocking member 1100 is located between the rotating shaft hole 150 and the stirring structure 300 close to the rotating shaft hole 150, the insulating liquid 120 is effectively prevented from leaking from the rotating shaft hole 150.

[0119] In one embodiment, Fig.16 As shown, the first blocking member 1100 is provided with a first isolation plate 1101, which is accommodated in the rotating inner cavity 210. The first isolation plate 1101 has a cylindrical surface 1102 arranged circumferentially around the rotating shaft 500, and the cylindrical surface 1102 is clearance-matched with the inner circumferential surface of the rotating inner cavity 210, and the diameter of the cylindrical surface 1102 is greater than the outer diameter of the stirring structure 300. The first isolation plate 1101 is a circular plate. The gap between the first isolation plate 1101 and the inner circumferential surface of the rotating inner cavity 210 is small, which effectively prevents the insulating liquid 120 thrown off by the stirring structure 300 from splashing toward the outside of the rotating inner cavity 210.

[0120] Specifically, the first isolation plate 1101 has a first blocking surface 1103 away from the rotating shaft hole 150, and the first blocking surface 1103 is substantially perpendicular to the axial direction of the rotating shaft 500. The first blocking surface 1103 is connected to the cylindrical surface 1102. The cylindrical surface 1102 is in clearance with the inner circumferential surface of the rotating inner cavity 210, so that the first isolation plate 1101 can rotate with the rotating shaft 500 in the rotating inner cavity 210. The first isolation plate 1101 is close to the opening of the rotating inner cavity 210 toward the rotating shaft hole 150 to ensure that there is enough installation space in the rotating inner cavity 210 for the stirring structure 300 and the rotor 400. It can be understood that when the splashing insulating liquid 120 moves to the first blocking surface 1103, the first blocking surface 1103 drives the insulating liquid 120 in contact with it to perform centrifugal motion under the rotational motion, and finally throws it off to the inner circumferential surface of the stator 200 to effectively cool the stator 200. More specifically, the first blocking surface 1103 and the stirring structure 300 are spaced apart to facilitate the disassembly and maintenance of the first isolation plate 1101 and the stirring structure 300 respectively.

[0121] In another embodiment, Fig.17 As shown, Fig.16 The illustrated embodiments are substantially the same, except that the first isolation plate 1101 is integrally provided with the stirring structure 300. The first isolation plate 1101 is provided on the side of the stirring structure 300 away from the rotor 400, so that the first isolation plate 1101 blocks the insulating liquid 120 splashing laterally and allows the splashing insulating liquid 120 to move toward the inner peripheral surface of the stator 200. Specifically, the first isolation plate 1101 extends from the end surface of the stirring structure 300 away from the rotor 400, and the outer diameter of the first isolation plate 1101 is greater than the outer diameter of the stirring structure 300, so that the first isolation plate 1101 can effectively block the movement of the insulating liquid 120 splashing from the stirring structure 300.

[0122] In another embodiment, Fig.18 As shown, Fig.16The illustrated embodiments are substantially the same, except that the first blocking member 1100 is provided with a second isolation plate 1104, the second isolation plate 1104 is located outside the rotating inner cavity 210, and the second isolation plate 1104 covers the opening of the rotating inner cavity 210 toward the rotating shaft hole 150. The second isolation plate 1104 can be a circular plate, a square plate, or a hexagonal plate, that is, any structural form that is intended to be able to cover the opening of the rotating inner cavity 210 can be used as an embodiment of the second isolation plate 1104. Specifically, the second isolation plate 1104 has a second blocking surface 1105 that is away from the rotating shaft hole 150, and the second blocking surface 1105 is spaced apart from the end surface of the stator 200. The second blocking surface 1105 completely covers the opening of the rotating inner cavity 210 toward the rotating shaft hole 150. After the stirring structure 300 stirs the insulating liquid 120 to fly toward the inner peripheral surface of the stator 200, part of the insulating liquid 120 will fly out from the rotating inner cavity 210 toward the opening of the rotating shaft hole 150, and the flying insulating liquid 120 will splash onto the second blocking surface 1105, and be blocked by the second blocking surface 1105 from moving toward the rotating shaft hole 150, thereby preventing the insulating liquid 120 from leaking, reducing the loss rate of the insulating liquid 120, and ensuring the heat dissipation efficiency of the motor 1000. Since the second isolation plate 1104 can rotate with the rotating shaft 500, the second blocking surface 1105 can drive the insulating liquid 120 in contact with it to perform centrifugal movement and finally be thrown off to the inner wall of the housing 100 around the second isolation plate 1104, so that the insulating liquid 120 that takes away the heat of the stator 200 flies to the second isolation plate 1104, and is thrown to the housing 100 by the second isolation plate 1104, and finally achieves heat exchange with the housing 100, so that the heat dissipation efficiency of the motor 100 is improved. For further information, see Fig.19 and Fig. 20 The motor 1000 further includes a seal 700 , which is fixed to the housing 100 and seals a gap between an outer peripheral side wall of the rotating shaft 500 and an inner wall of the rotating shaft hole 150 .

[0123] In this embodiment, the seal 700 is fixed to the first end cover 141. The seal 700 is provided with a through hole 701, and the shaft 500 passes through the through hole 701 of the seal 700. The outer peripheral side wall of the shaft 500 is tightly matched with the inner peripheral side wall of the through hole 701, and the outer peripheral side wall of the seal 700 is tightly matched with the inner peripheral side wall of the shaft hole 150, so that the seal 700 is sealed between the outer peripheral side wall of the shaft 500 and the inner wall of the shaft hole 150. The seal 700 is used to prevent the medium outside the housing 100 from entering the cavity 110, and also prevent the insulating liquid 120 in the housing 100 from leaking to the outside of the housing 100. The seal 700 has elastic deformation properties so that the seal 700 can elastically abut against the outer peripheral side wall of the shaft 500 and the inner wall of the shaft hole 150 to increase the sealing performance of the seal 700, and can also adapt to the floating of the shaft 500 to ensure the sealing of the shaft 500 and the first end cover 141.

[0124] In one embodiment, the seal 700 is provided with a first sealing lip 710 facing the shaft hole 150 and a second sealing lip 720 facing the inner side of the cavity 110 . The first sealing lip 710 is used to prevent the medium outside the housing 100 from entering the cavity 110 , and the second sealing lip 720 is used to prevent the insulating liquid 120 from flowing out of the cavity 110 .

[0125] Specifically, the sealing member 700 is provided with a first sealing ring 730 and a second sealing ring 740 opposite to the first sealing ring 730, and a sealing gasket 750 disposed between the first sealing ring 730 and the second sealing ring 740. The outer diameters of the first sealing ring 730 and the second sealing ring 740 are equal. When the first sealing ring 730 and the second sealing ring 740 are in a naturally stretched state, the outer diameter of the first sealing ring 730 and the outer diameter of the second sealing ring 740 are both larger than the inner diameter of the rotating shaft hole 150, so as to ensure that the outer walls of the first sealing ring 730 and the second sealing ring 740 can both tightly contact the inner wall of the rotating shaft hole 150. The sealing gasket 750 is a rigid gasket, and the first sealing ring 730 and the second sealing ring 740 are respectively attached to the two opposite sides of the seal. The sealing gasket 750 is used to support the first sealing ring 730 and the second sealing ring 740 to prevent the first sealing ring 730 and the second sealing ring 740 from being overly deformed by pressure and to prevent a gap from appearing between the first sealing ring 730 and the second sealing ring 740 and the inner wall of the shaft hole 150 .

[0126] More specifically, the first end cover 141 is provided with a first sealing flange 1412 and a second sealing flange 1413 on the inner wall of the shaft hole 150. The second sealing flange 1413 is adjacent to the cavity 110. The distance from the top of the first sealing flange 1412 to the inner wall of the shaft hole 150 is smaller than the distance from the top of the second sealing flange 1413 to the inner wall of the end cover 149 shaft 500. The second sealing ring 740 is clamped between the first sealing flange 1412 and the second sealing flange 1413. The first sealing ring 730 is held against the side of the first sealing flange 1412 away from the second sealing ring 740. There is an assembly gap between the sealing gasket 750 and the first sealing flange 1412.

[0127] The first sealing ring 730 comprises a first bottom ring 731 and a first side ring 732 extending from the first bottom ring 731. The first bottom ring 731 is attached to the inner wall of the shaft hole 150. The first side ring 732 extends from one end of the first bottom ring 731 close to the first sealing flange 1412. The first side ring 732 is attached to the first sealing flange 1412 and the sealing gasket 750. The first sealing lip 710 extends from the end of the first side ring 732 away from the first bottom ring 731 to the direction away from the outside of the cavity 110. The first sealing lip 710 is tightly attached to the outer peripheral side wall of the shaft 500. A plurality of first tooth-shaped sealing ribs are provided on one side of the first sealing lip 710 that is attached to the outer peripheral side wall of the shaft 500. The plurality of first tooth-shaped sealing ribs are arranged equidistantly along the axial direction of the shaft 500, thereby forming a multi-channel sealing structure to improve the sealing performance. Since the first sealing lip 710 extends toward the outside of the cavity 110, when the first sealing ring 730 is subjected to the pressure of the medium outside the cavity 110, the first sealing lip 710, the first side ring 732 and the first bottom ring 731 tend to expand outward, so that the first sealing lip 710, the first side ring 732 and the first bottom ring 731 are tightly fitted to the outer peripheral side wall of the rotating shaft 500, the sealing gasket 750 and the inner wall of the rotating shaft hole 150 respectively, thereby effectively preventing the medium outside the cavity 110 from entering the cavity 110.

[0128] The second sealing ring 740 has a second bottom ring 741 and a second side ring 742 extending from the second bottom ring 741. The second bottom ring 741 is attached to the inner wall of the shaft hole 150. The second side ring 742 extends from one end of the second bottom ring 741 close to the first sealing flange 1412. The second side ring 742 is attached to the first sealing flange 1412 and the sealing gasket 750. The second sealing lip 720 extends from the end of the second side ring 742 away from the first bottom ring 731 toward the inside of the cavity 110. The second sealing lip 720 is tightly attached to the outer peripheral side wall of the shaft 500. A plurality of second tooth-shaped sealing ribs are provided on one side of the second sealing lip 720 that is attached to the outer peripheral side wall of the shaft 500. The plurality of second tooth-shaped sealing ribs are equidistantly arranged along the axial direction of the shaft 500, thereby forming a multi-channel sealing structure to improve the sealing performance. Since the second sealing lip 720 extends toward the inside of the cavity 110, when the second sealing ring 740 is subjected to the pressure of the insulating liquid 120 inside the cavity 110, the second sealing lip 720, the second side ring 742 and the second bottom ring 741 tend to expand outward, so that the second sealing lip 720, the second side ring 742 and the second bottom ring 741 are tightly fitted to the outer peripheral side wall of the rotating shaft 500, the sealing gasket 750 and the inner wall of the rotating shaft hole 150 respectively, thereby effectively preventing the insulating liquid 120 in the cavity 110 from leaking out of the cavity 110.

[0129] It is understandable that, in other embodiments, the first sealing ring 730 and the second sealing ring 740 may be directly fitted together, so that the structure of the sealing member 700 is simple and the production cost is reduced.

[0130] For further information, see Fig.21 In one embodiment, the rotor 400 is at least partially immersed in the insulating liquid 120. Fig.21 The state of the motor 1000 shown is taken as an example. When the axis of the rotor 400 is horizontally arranged, and the rotor 400 is in a stationary state, and the insulating liquid 120 in the cavity 110 is not filled, the distance from the upper surface of the insulating liquid 120 to the axis of the rotor 400 is less than the outer diameter of the rotor 400, so that the rotor 400 can be at least partially immersed in the insulating liquid 120. When the rotor 400 rotates, the rotor 400 can stir the insulating liquid 120, so that the insulating liquid 120 is stirred by the rotor 400 and thrown away to the stator 200 around the rotor 400, and the rotor 400 as a whole will also be covered with part of the insulating liquid 120 due to its own rotation, and finally the insulating liquid 120 is fully in contact with the stator 200 and the rotor 400, so that the insulating liquid 120 effectively cools both the stator 200 and the rotor 400.

[0131] In another embodiment, see Fig. 22 ,and Fig.21 The embodiments shown are substantially the same, except that when the motor 1000 is placed horizontally, the axis of the rotor 400 is horizontally arranged, the insulating liquid 120 does not fill the cavity 110, and the insulating liquid 120 covers the axis of the rotor 400, then the distance from the upper surface of the insulating liquid 120 to the axis of the rotor 400 is not limited, that is, it is sufficient to ensure that the rotor 400 can contact the insulating liquid 120. After the rotor 400 rotates, the rotor 400 can still stir the insulating liquid 120 to throw it off the stator 200 around the rotor 400, and the proportion of the rotor 400 immersed in the insulating liquid 120 is increased, so that the cooling efficiency of the rotor 400 is improved.

[0132] Of course, it is understandable that when the cavity 110 is filled with the insulating liquid 120 , the rotor 400 is completely immersed in the insulating liquid 120 , the rotation of the rotor 400 can also drive the insulating liquid 120 to rotate, and the insulating liquid 120 can conduct the heat of the rotor 400 and the stator 200 to the casing 100 .

[0133] For further information, see Fig.23 ,exist Fig.21On the basis of the embodiment of the present invention, the rotor 400 is provided with a magnetic member 420, and the insulating liquid 120 contacts the magnetic member 420 to cool the magnetic member 420. The magnetic member 420 is a permanent magnet. The coil winding 220 of the stator 200 generates an alternating magnetic field according to an electrical signal, so that the rotor 400 is rotated relative to the stator 200 under the action of the alternating magnetic field. By immersing the rotor 400 at least partially in the insulating liquid 120, after the rotor 400 rotates, the rotor 400 can stir the insulating liquid 120 to throw it away. Since the magnetic member 420 rotates around the axis of the rotor 400, the insulating liquid 120 can be stirred by the rotor 400 and can penetrate into the magnetic member 420 inside the rotor 400 under the action of gravity after being stirred by the rotor 400, ensuring that the magnetic member 420 can contact the insulating liquid 120, so that the insulating liquid 120 can absorb the heat of the magnetic member 420. Of course, in other embodiments, the magnetic member 420 may also be an electromagnetic coil, which receives an electrical signal through the rotor 400 so that the rotor 400 and the stator 200 generate an alternating magnetic field, and then the rotor 400 rotates relative to the stator 200 .

[0134] In this embodiment, the rotor 400 is further provided with a rotor bracket 430, and the rotor bracket 430 is provided with a plurality of slots 431 along the axial direction of the rotor 400, and the plurality of slots 431 are arranged circumferentially around the axis of the rotor 400. The rotor 400 is provided with a plurality of magnetic members 420, and each magnetic member 420 is correspondingly inserted into each slot 431, so that the plurality of magnetic members 420 are fixed on the rotor bracket 430. The rotating shaft 500 passes through the rotor bracket 430 and is fixed to the rotor bracket 430. As an embodiment, part of the magnetic member 420 can be immersed in the insulating liquid 120, so that the magnetic member 420 contacts the insulating liquid 120 over a large area, so that the magnetic member 420 is effectively cooled to ensure the life of the magnetic member 420, thereby ensuring the operating efficiency of the motor 1000.

[0135] In this embodiment, the stirring structure 300 and the rotor 400 are integrally provided or separated from each other.

[0136] In one embodiment, see Fig.24 , the stirring structure 300 and the rotor 400 are integrally arranged. Fig.23 On the basis of the illustrated embodiment, a stirring structure 300 is extended from one end of the rotor support 430 along the axial direction of the rotor 400, that is, a part of the rotor support 430 forms the stirring structure 300, that is, a part of the rotor 400 constitutes the stirring structure 300, so that the stirring structure 300 is integrated with the rotor 400. By integrating the rotor 400 with the stirring structure 300, it is possible to avoid the rotation speed of the stirring structure 300 being less than that of the rotor 400, so that the weight of the insulating liquid 120 stirred by the stirring structure 300 is guaranteed.

[0137] In another embodiment, see Fig.25 ,and Fig.24 The difference from the illustrated embodiment is that a portion of the rotor support 430 of the rotor 400 and a portion of the magnetic member 420 together constitute the stirring structure 300, for example, the end of the rotor support 430 and the ends of multiple magnetic members 420 together constitute the stirring structure 300, so that the stirring structure 300 is integrated with the rotor 400.

[0138] In another embodiment, Fig.19 As shown, the rotor 400 is isolated from the stirring structure 300. Specifically, the stirring structure 300 is spaced apart from the end of the rotor bracket 430, that is, the stirring structure 300 is spaced apart from the end of the rotor 400. By separating the stirring structure 300 from the rotor 400, it is convenient to disassemble and maintain the stirring structure 300, and different stirring structures 300 can be replaced according to different cooling requirements. As an embodiment, the motor 1000 is provided with two stirring structures 300, and the two stirring structures 300 are respectively located at the two ends of the rotor 400 and are spaced apart at the two ends of the rotor 400.

[0139] In one embodiment, see Fig.26 The stirring structure 300 is provided with a first rotating ring 330 . The first rotating ring 330 has a first outer peripheral surface 331 . The first outer peripheral surface 331 has a preset surface roughness so that a portion of the insulating liquid 120 can adhere to the first outer peripheral surface 331 .

[0140] Specifically, the first rotating ring 330 is provided with a first matching hole 332, and the inner wall of the first matching hole 332 is fixedly matched with the outer peripheral side wall of the rotating shaft 500, so that the first rotating ring 330 is fixedly connected to the rotating shaft 500. The first rotating ring 330 can rotate around the axis of the rotating shaft 500. One end of the first rotating ring 330 is spaced apart from one end of the rotor 400. As an embodiment, the inner wall of the first matching hole 332 is provided with a fixed key, and the outer peripheral side wall of the rotating shaft 500 is provided with a keyway matched with the fixed key, so that the first rotating ring 330 and the rotating shaft 500 can rotate synchronously. Of course, in other embodiments, the inner wall of the first matching hole 332 can also be provided with a keyway, and the outer peripheral side wall of the rotating shaft 500 can be provided with a fixed key matched with the keyway. In the embodiment of the present application, the fixed matching form of the inner wall of the first matching hole 332 and the outer peripheral side wall of the rotating shaft 500 is not limited to the above method. The first outer peripheral surface 331 is provided with a surface roughness structure, and the surface roughness structure can be arranged regularly or irregularly. The surface roughness structure makes the first outer peripheral surface 331 have a preset roughness. It can be understood that when the surface of the rigid structure changes from smooth to rough, the force attribute between the surface of the rigid structure and the fluid gradually evolves from shear force to adhesion force, that is, when the surface roughness of the rigid structure surface reaches a certain level, the force of the rigid structure surface on the fluid is mainly adhesion force, that is, increasing the surface roughness can significantly enhance the adhesion of the rigid structure to the fluid.

[0141] In this embodiment, a preset roughness is set on the first outer peripheral surface 331 of the first rotating ring 330, so that the adhesion force of the first outer peripheral surface 331 on the insulating liquid 120 is strengthened. In the illustrated state, the cavity 110 is not filled with the insulating liquid 120. When the first rotating ring 330 rotates with the rotating shaft 500, since a part of the first rotating ring 330 is immersed in the insulating liquid 120 at a lower position, the first outer peripheral surface 331 can carry part of the insulating liquid 120 away from the insulating liquid 120 at a lower position and rotate to a higher position. When the surface adhesion force of the first outer peripheral surface 331 is insufficient to balance the centrifugal force of the insulating liquid 120, the insulating liquid 120 at a higher position is separated from the first outer peripheral surface 331 and is thrown around the first rotating ring 330, and finally thrown onto the inner wall of the stator 200 around the first rotating ring 330, so that the stator 200 is finally cooled.

[0142] It can be understood that the cavity 110 is filled with insulating liquid 120, and the first rotating ring 330 is completely immersed in the insulating liquid 120. The first outer peripheral surface 331 has a preset roughness, so that the first outer peripheral surface 331 can drive the insulating liquid 120 nearby to rotate, so that the insulating liquid 120 near the first outer peripheral surface 331 forms a laminar flow rotation, and then the traction between the liquids drives the insulating liquid 120 in the cavity 110 to rotate, so that the insulating liquid 120 transfers the heat of the stator 200 to the housing 100 in a rotating motion, thereby increasing the heat conduction efficiency.

[0143] In this implementation, please refer to Fig. 27 , Fig.28 and Fig.29 The first peripheral surface 331 is provided with a plurality of grooves 3311 and / or a plurality of convex humps 3312, so that the first peripheral surface 331 has a preset roughness. The grooves 3311 and / or the convex humps 3312 of the first peripheral surface 331 can be formed by a surface knurling process. Of course, in other embodiments, the first peripheral surface 331 can also be processed by grinding, turning, milling and other processes to form a plurality of grooves 3311 and / or a plurality of convex humps 3312 structures.

[0144] In one embodiment, Fig. 27As shown, the first outer peripheral surface 331 is provided with a plurality of convex humps 3312, each convex humps 3312 is in the shape of a triangular pyramid. The plurality of convex humps 3312 can be formed by surface knurling process. The plurality of convex humps 3312 are connected to each other. The plurality of convex humps 3312 are arranged in an array according to the circumferential direction and axial direction of the first rotating ring 330. When the first outer peripheral surface 331 is in contact with the insulating liquid 120, the space between two adjacent convex humps 3312 can adhere to part of the insulating liquid 120. Of course, in other embodiments, the convex humps 3312 can also be any shape such as a quadrilateral prism, a pentagonal prism, or a hexagonal block. The plurality of convex humps 3312 can also be randomly distributed on the first outer peripheral surface 331, or arranged in a ring array.

[0145] In another embodiment, Fig.28 As shown, the first outer peripheral surface 331 is provided with a plurality of grooves 3311, each of which is in the shape of a triangular pyramid. The plurality of grooves 3311 may be formed by surface knurling. The plurality of grooves 3311 are connected to each other. The plurality of grooves 3311 are arranged in an array in the circumferential direction and axial direction of the first rotating ring 330. When the first outer peripheral surface 331 is in contact with the insulating liquid 120, a portion of the insulating liquid 120 may adhere to the space in each groove 3311. Of course, in other embodiments, the groove 3311 may also be any shape such as a quadrilateral groove, a pentagonal groove, or a hexagonal groove. The plurality of grooves may also be randomly distributed on the first outer peripheral surface 331, or arranged in an annular array.

[0146] In another embodiment, Fig.29 As shown, the first outer peripheral surface 331 is provided with a plurality of convex humps 3312 and a plurality of grooves 3311, each convex humps 3312 is hemispherical, and each groove 3311 is hemispherical. The plurality of grooves 3311 and the plurality of convex humps 3312 are formed by surface milling. The plurality of convex humps 3312 and the plurality of grooves 3311 are arranged in an array according to the circumferential direction and axial direction of the first rotating ring 330, and the convex humps 3312 and the grooves 3311 are arranged alternately. When the first outer peripheral surface 331 is in contact with the insulating liquid 120, a portion of the insulating liquid 120 can be adhered between each adjacent two convex humps 3312 and in each groove 3311. Of course, in other embodiments, the groove 3311 or the convex humps 3312 can also be any shape such as square, triangle, or pentagon. The plurality of grooves 3311 or the plurality of convex humps 3312 can also be randomly distributed on the first outer peripheral surface 331, or arranged in a ring array.

[0147] It can be understood that in the embodiment of the present application, the rough structure of the first outer peripheral surface 331 is not limited to the above method, and any rough structure intended to make the cylindrical surface obtain a preset roughness can be used as an implementation method of the present application. For example, the implementation method of the present application can also be that the first rotating ring 330 is an iron ring, and the first rotating ring 330 is formed by sand casting, and the first outer peripheral surface 331 has a plurality of convex humps 3312 and grooves 3311 the size of gravel particles, so that the surface of the first outer peripheral surface 331 has a preset roughness.

[0148] In one embodiment, please refer to Fig.26 and Fig. 27 , the preset surface roughness is proportional to the weight of the insulating liquid 120 adhered to the unit area of ​​the first outer peripheral surface 331, that is, if the preset surface roughness of the first outer peripheral surface 331 is increased, the weight of the insulating liquid 120 adhered to the unit area of ​​the first outer peripheral surface 331 will also increase. When the cavity 110 is not filled with the insulator, the preset surface roughness is proportional to the weight of the insulating liquid 120 adhered to the unit area of ​​the first outer peripheral surface 331, and the weight of the insulating liquid 120 thrown away by the first rotating ring 330 per unit time is equal to the total area of ​​the first outer peripheral surface 331 multiplied by the weight of the insulating liquid 120 adhered per unit area and then multiplied by the rotation rate of the first rotating ring 330, that is, increasing the preset surface roughness of the first rotating ring 330 can increase the weight of the insulating liquid 120 thrown away by the first rotating ring 330 per unit time, thereby increasing the temperature drop rate of the stator 200 per unit time.

[0149] In one embodiment, the preset surface roughness is inversely proportional to the rated speed of the rotor 400, that is, if the rated speed of the rotor 400 is increased, the preset surface roughness needs to be reduced accordingly. It should be noted that the preset surface roughness is inversely proportional to the rated speed of the rotor 400 under the condition that the weight of the insulating liquid 120 that can be thrown off by the first rotating ring 330 is constant. In other words, the weight of the insulating liquid 120 thrown off by the first rotating ring 330 is always maintained at a preset value. If the rated speed of the rotor 400 increases, the preset surface roughness of the first outer peripheral surface 331 decreases. When the cavity 110 is not filled with the insulator, by setting the preset surface roughness inversely proportional to the rated speed of the rotor 400, the loss of stirring the insulating liquid 120 and the cooling efficiency of the motor 1000 can be optimized. It is understandable that when the rated speed of the rotor 400 increases, the rated speed of the first rotating ring 330 will also increase accordingly, and when the first rotating ring 330 is running at a high speed, the movement rate of the insulating liquid 120 thrown away will also increase. If the roughness of the first outer peripheral surface 331 is reduced, the weight of the insulating liquid 120 adhered to the first outer peripheral surface 331 per unit area will decrease, and since the rated speed of the first rotating ring 330 increases, the weight of the insulating liquid 120 thrown away by the first rotating ring 330 per unit time can remain unchanged, thereby maintaining the cooling efficiency of the motor 1000. Therefore, at a high rated speed of the rotor 400, setting a smaller surface roughness of the first rotating ring 330 can improve the cooling efficiency of the motor 1000.

[0150] As an embodiment, when the cavity 110 is not filled with insulator, by controlling the rated speed of the rotor 400 to be between 500rpm and 1500rpm, the weight of the insulating liquid 120 thrown off by the first peripheral surface 331 per unit time accounts for less than or equal to 30% of the total weight of the insulating liquid 120, so that the first rotating ring 330 can meet the cooling requirement of the stator 200 without having to throw off a large amount of insulating liquid 120. Since the first peripheral surface 331 lifts the insulating liquid 120 by surface adhesion, the rotation resistance of the insulating liquid 120 to the first rotating ring 330 is almost small, so that the output efficiency of the rotation torque of the motor 1000 is guaranteed, and the insulating liquid 120 can be effectively thrown off to the surrounding inner wall of the stator 200. The insulating liquid 120 thrown off by the first peripheral surface 331 is the insulating liquid 120 that is adhered to the first peripheral surface 331 and driven to a high position and finally thrown to the inner wall of the stator 200. By controlling the relationship between the rotation speed of the rotor 400 and the weight of the insulating liquid 120 thrown off by the first outer peripheral surface 331, the motor 1000 can cope with most working conditions, and the weight of the insulating liquid 120 thrown off will not be too large, so the mechanical energy lost in throwing off the insulating liquid will not be too large, thereby ensuring that the motor 1000 operates under safe cooling conditions and the operating efficiency is optimized.

[0151] In this embodiment, as the rated speed of the rotor 400 increases, the weight of the insulating liquid 120 thrown off by the first rotating ring 330 per unit time and the total weight of the insulating liquid 120 increase, and the two are in a nonlinear relationship. It can be understood that when the rated speed of the rotor 400 is 1500rpm, the weight of the insulating liquid 120 thrown off by the first peripheral surface 331 per unit time accounts for approximately 30% of the total weight of the insulating liquid 120. When the rated speed of the rotor 400 is 500rpm, the weight of the insulating liquid 120 thrown off by the first peripheral surface 331 per unit time accounts for approximately 20% of the total weight of the insulating liquid 120. When the rated speed of the rotor 400 is 1000rpm, the weight of the insulating liquid 120 thrown off by the first peripheral surface 331 per unit time accounts for approximately 28% of the total weight of the insulating liquid 120.

[0152] In this embodiment, the preset surface roughness is inversely proportional to the outer diameter of the first rotating ring 330, that is, if the surface roughness of the first outer peripheral surface 331 is increased, the outer diameter of the first rotating ring 330 is reduced. It should be noted that the preset surface roughness and the outer diameter of the first rotating ring 330 are inversely proportional under the condition that the weight of the insulating liquid 120 thrown away by the first rotating ring 330 per unit time is constant. In other words, the weight of the insulating liquid 120 thrown away by the first rotating ring 330 per unit time is always maintained at a preset value. If the preset surface roughness increases, the outer diameter of the first rotating ring 330 is reduced.

[0153] In another embodiment, see Fig.30 ,and Fig.26The embodiments are substantially the same, except that the stirring structure 300 is provided with a second rotating ring 340, and a boss 341 is provided on the circumference of the second rotating ring 340, and one side of the boss 341 is used to stir the insulating liquid 120. The second rotating ring 340 has a second matching hole 342, and the inner wall of the second matching hole 342 is fixedly matched with the outer peripheral side wall of the rotating shaft 500. As an embodiment, a fixed key is provided on the inner wall of the second matching hole 342, and a keyway is provided on the outer peripheral side wall of the rotating shaft 500 to match the fixed key, so that the second rotating ring 340 and the rotating shaft 500 can rotate synchronously. Of course, in other embodiments, a keyway can be provided on the inner wall of the second matching hole 342, and a fixed key can be provided on the outer peripheral side wall of the rotating shaft 500 to match the keyway. In the embodiment of the present application, the fixed matching form of the inner wall of the second matching hole 342 and the outer peripheral side wall of the rotating shaft 500 is not limited to the above. The second rotating ring 340 can rotate around the axis of the rotating shaft 500. The axis of the second rotating ring 340 is coaxially arranged with the axis of the rotating shaft 500. One end of the second rotating ring 340 is spaced apart from one end of the rotor 400. The second rotating ring 340 has a second outer peripheral surface 343, and the boss 341 is arranged on the second outer peripheral surface 343. The boss 341 has a boss top surface 3411 away from the second outer peripheral surface 343. In order to ensure that the boss 341 can stir the insulating liquid 120, the state shown in the figure is explained. In the figure, the axis of the rotating shaft 500 is horizontally arranged, and the distance from the boss top surface 3411 to the axis of the rotating shaft 500 is greater than the distance from the upper surface of the insulating liquid 120 to the axis of the rotating shaft 500.

[0154] Understandably, please also refer to Fig.30 and Fig.31 , when the insulating liquid 120 does not fill the cavity 110, the second rotating ring 340 rotates with the rotating shaft 500, and the boss 341 rotates around the axis of the rotating shaft 500. The boss 341 has a first boss side surface 3412 and a second boss side surface 3413 connected to the boss top surface 3411. The first boss side surface 3412 and the second boss side surface 3413 are both substantially parallel to the axial direction of the second rotating ring 340. The state shown in the figure is described below, and the axial direction of the rotating shaft 500 in the figure is horizontally arranged. The boss 341 rotates around the axis of the rotating shaft 500, and the space between the first boss side surface 3412 or the second boss side surface 3413 and the second outer peripheral surface 343 can accommodate part of the insulating liquid 120, and the first boss side surface 3412 or the second boss side surface 3413 stirs part of the insulating liquid 120 from a low position to a high position, and when the driving force of the first boss side surface 3412 or the second boss side surface 3413 on the insulating liquid 120 and the centrifugal force of the insulating liquid 120 cannot meet the balance, the insulating liquid 120 is thrown around the second rotating ring 340, and finally thrown to the inner wall of the stator 200 around the second rotating ring 340, so as to cool the stator 200.

[0155] It is understandable that, in this embodiment, the first boss side surface 3412 and the second boss side surface 3413 are both flat surfaces, and in other embodiments, the first boss side surface 3412 and the second boss side surface 3413 may also be curved surfaces, and the first boss side surface 3412 and the second boss side surface 3413 may not be parallel to the axis of the rotating shaft 500. In other embodiments, the surface of the boss 341 may be roughened so that the surface of the boss 341 also has a certain ability to adhere to the insulating liquid 120, thereby increasing the weight of the insulating liquid 120 thrown off by the stirring structure 300 per unit time.

[0156] Furthermore, if Fig.31 As shown, the second rotating ring 340 is provided with a plurality of bosses 341, and the plurality of bosses 341 are arranged at equal intervals along the circumference of the second rotating ring 340. The plurality of bosses 341 are all arranged on the second outer peripheral surface 343. Fig.26 Schematically, the axial direction of the rotating shaft 500 is horizontally arranged. When the second rotating ring 340 rotates around the axis of the rotating shaft 500, the plurality of bosses 341 continuously stir the insulating liquid 120, so that the stirred insulating liquid 120 is continuously pushed up, so that the insulating liquid 120 at a low position can be continuously pushed up to a high position, and finally the inner wall of the stator 200 around the second rotating ring 340 is evenly contacted with the insulating liquid 120, so that the stator 200 is effectively cooled.

[0157] Specifically, in one embodiment, the angle formed by two adjacent bosses 341 and the axis of the second rotating ring 340 is 30° to 120°. Fig.31 As shown in the following description, Fig. 27 In the cross section of the second rotating ring 340 shown in , each boss 341 is regarded as a point on the second outer peripheral surface 343, and a line connecting two adjacent bosses 341 and the axis of the rotating shaft 500 can form an angle of 30° to 120°. Fig.32 As shown, the number of bosses 341 is 12, and the angle formed by two adjacent bosses 341 to the axis of the second rotating ring 340 is 30°. In other embodiments, the number of bosses 341 is 3, and the angle formed by the axis of the second rotating ring 340 between two adjacent bosses 341 is 120°. The number of bosses 341 is 6, and the angle formed by the axis of the second rotating ring 340 between two adjacent bosses 341 is 60°. That is, the number of bosses 341 arranged circumferentially on the second rotating ring 340 can be 3 to 12, so that the multiple bosses 341 can continuously and effectively stir the insulating liquid 120, and throw the insulating liquid 120 onto the inner wall of the stator 200 around the second rotating ring 340.

[0158] Of course, in another embodiment, see Fig.33 ,and Fig.31The illustrated embodiments are substantially the same, except that a plurality of first bosses 344 and a plurality of second bosses 345 are provided on the second outer peripheral surface 343 , the plurality of first bosses 344 and the plurality of second bosses 345 are all arranged circumferentially along the second rotating ring 340 , and the first bosses 344 and the second bosses 345 are arranged alternately and spaced apart along the axial direction of the second rotating ring 340 .

[0159] In one embodiment, Fig.34 As shown, the boss 341 extends from one end of the second rotating ring 340 to the other end of the second rotating ring 340. Specifically, the boss 341 extends in parallel with the axial direction of the rotor 400, that is, the length of the boss 341 is lengthened, so that the area of ​​the first boss side surface 3412 and the second boss side surface 3413 is increased, that is, the first boss side surface 3412 and the second boss side surface 3413 can stir more insulating liquid 120, so that the weight of the insulating liquid 120 thrown off by the second rotating ring 340 per unit time is increased, and the cooling efficiency of the stator 200 is improved.

[0160] In another embodiment, if Fig.35 As shown, the boss 341 has a first boss end face 3414 close to the rotor 400 and a second boss end face 3415 away from the rotor 400. There is a gap between the first boss end face 3414 and the end face of the second rotating ring 340 close to the rotor 400, and there is a gap between the second boss end face 3415 and the end face of the second rotating ring 340 away from the rotor 400. By utilizing the gap between the two end faces of the boss 341 and the first rotating ring 330, the resistance of the boss 341 to stirring the insulating liquid 120 is reduced, thereby reducing the kinetic energy loss of stirring the insulating liquid 120.

[0161] In one embodiment, see Fig.36 , combined with Fig.30 The direction from the bottom end to the top end of the boss 341 and the direction from the axis of the second rotating ring 340 to the bottom end of the boss 341 form a preset angle a. The bottom end of the boss 341, the top end of the boss 341, and the axis of the second rotating ring 340 are all considered to be at Fig.32At a single point on the cross section shown, a line is drawn between the bottom end of the boss 341 and the top end of the boss 341, and a line is drawn between the bottom end of the boss 341 and the axis of the second rotating ring 340. The two lines can form a preset angle a. By tilting the direction from the bottom end of the boss 341 to the top end of the boss 341 relative to the axis of the second rotating ring 340, the space between one side of the boss 341 and the second outer peripheral surface 343 can be made narrower. When the rotor 400 drives the second rotating ring 340 to rotate in the tilted direction of the boss 341, more insulating liquid 120 can be carried in the narrow space between the boss 341 and the second outer peripheral surface 343, thereby increasing the weight of the insulating liquid 120 that can be thrown off by the second rotating ring 340 per unit time, that is, when the second rotating ring 340 rotates in the first direction, the cooling efficiency of the stator 200 is improved. It can be understood that when the rotor 400 is rotated in the first direction ( Fig.32 The counterclockwise rotation is defined as the common operating state of the motor 1000, which can ensure that the motor 1000 can effectively cool the stator 200 in the common operating state, thereby ensuring the operating efficiency of the motor 1000. Since the motor 1000 of the embodiment of the present application is applied to a marine propeller 2000, the rotor 400 of the motor 1000 rotates in the first direction, which can drive the propeller 2100 to rotate in the first direction, thereby propelling the ship 3000 forward, so as to ensure that the motor 1000 is effectively cooled in the state of propelling the ship 3000 forward, thereby improving the operating efficiency.

[0162] In one embodiment, the preset angle a between the bottom end of the boss 341 and the top end of the boss 341 and the bottom end of the boss 341 and the axis of the second rotating ring 340 is 0° to 60°. It can be understood that the limit state of the boss 341 tilting to one side is that the preset angle a between the top end of the boss 341 and the bottom end of the boss 341 and the bottom end of the boss 341 and the axis of the second rotating ring 340 is 60°. When the preset angle a is greater than 60°, the weight of the insulating liquid 120 carried by the narrow space between the second outer peripheral surface 343 of the boss 341 is reduced, so that the weight of the insulating liquid 120 thrown off by the second rotating ring 340 per unit time is reduced, and the cooling requirement cannot be met.

[0163] In another embodiment, see Fig.37The stirring structure 300 is provided with a third rotating ring 350. The circumference of the third rotating ring 350 is provided with an inner cavity 351 and a through hole 352 communicating with the inner cavity 351. The through hole 352 is arranged on the outer circumferential surface of the third rotating ring 350 away from the opening of the inner cavity 351. The inner wall of the inner cavity 351 and the inner wall of the through hole 352 are used to stir the insulating liquid 120. During the rotation of the third rotating ring 350, the insulating liquid 120 can enter the inner cavity 351 and rotate around the axis of the rotating shaft 500 with the inner cavity 351. When the restraining force of the inner wall of the inner cavity 351 on the insulating liquid 120 is insufficient to balance the centrifugal force of the insulating liquid 120, the insulating liquid 120 is thrown around the third rotating ring 350 and finally thrown onto the inner circumferential surface of the stator 200 around the third rotating ring 350, so as to effectively cool the stator 200.

[0164] For details, please refer to Fig.37 and Fig.38, the third rotating ring 350 is provided with a third matching hole 353, and the inner wall of the third matching hole 353 is fixedly matched with the outer peripheral side wall of the rotating shaft 500, so that the third rotating ring 350 is fixedly connected with the rotating shaft 500. The third rotating ring 350 can rotate around the axis of the rotating shaft 500. The axis of the third rotating ring 350 is coaxially arranged with the axis of the rotating shaft 500. One end of the third rotating ring 350 is spaced apart from one end of the rotor 400. As an embodiment, a fixed key is provided on the inner wall of the third matching hole 353, and a keyway is provided on the outer peripheral side wall of the rotating shaft 500 to match the fixed key, so as to limit the third rotating ring 350 and the rotating shaft 500 to rotate synchronously. Of course, in other embodiments, the keyway can also be provided on the inner wall of the third matching hole 353, and the fixed key that matches the keyway can be provided on the outer peripheral side wall of the rotating shaft 500. In the embodiment of the present application, the fixed matching form of the inner wall of the third matching hole 353 and the outer peripheral side wall of the rotating shaft 500 is not limited to the above method. The third rotating ring 350 has a third outer peripheral surface 354, and the through hole 352 extends from the third outer peripheral surface 354 to the axis of the third rotating ring 350. The inner cavity 351 is located between the inner wall of the third matching hole 353 and the third outer peripheral surface 354. The inner cavity 351 is isolated from the third matching hole 353 to ensure that the third rotating ring 350 is effectively fixed on the rotating shaft 500 and prevent the third rotating ring 350 from shaking. The opening of the through hole 352 away from the third outer peripheral surface 354 is arranged on the inner wall of the inner cavity 351 close to the third outer peripheral surface 354. When the third rotating ring 350 rotates, the insulating liquid 120 in the inner cavity 351 will gather on the inner wall of the inner cavity 351 close to the third outer peripheral surface 354 under the action of centrifugation, and when the centrifugal force of the insulating liquid 120 and the restraining force of the inner cavity 351 are unbalanced, the insulating liquid 120 flows out from the through hole 352 and is thrown around the third rotating ring 350. It can be understood that the volume of the inner cavity 351 is significantly larger than the volume of the through hole 352 , so that the inner cavity 351 can accommodate enough insulating liquid 120 , so that the third rotating ring 350 can swing away enough insulating liquid 120 .

[0165] Furthermore, the third rotating ring 350 is provided with a plurality of inner cavities 351 and a plurality of through holes 352 . The plurality of inner cavities 351 are arranged at intervals along the circumference of the third rotating ring 350 , and each inner cavity 351 is connected to at least one through hole 352 .

[0166] In this embodiment, each inner cavity 351 is connected to a through hole 352, so that the insulating liquid 120 in each inner cavity 351 can only flow out from the corresponding through hole 352. Of course, in other embodiments, each inner cavity 351 can also be connected to two or more through holes 352, that is, the insulating liquid 120 in each inner cavity 351 can flow out of the inner cavity 351 from two or more through holes 352. The distance between the two inner walls of two adjacent inner cavities 351 is set equidistantly, that is, the multiple inner cavities 351 are evenly arranged along the circumference of the third rotating ring 350, so that the insulating liquid 120 thrown away by the third rotating ring 350 is evenly dispersed.

[0167] Furthermore, if Fig.38 As shown, two adjacent inner cavities 351 are separated by a partition, and the partition extends radially along the third rotating ring 350 .

[0168] Specifically, each inner cavity 351 has a first inner side surface 3511 and a second inner side surface 3512 opposite to the first inner side surface 3511. The first inner side surface 3511 and the second inner side surface 3512 are both parallel to the radial direction of the third rotating ring 350. A partition is formed between the first inner side surface 3511 of one inner cavity 351 and the second inner side surface 3512 of an adjacent inner cavity 351, so that the partition extends along the radial direction of the third rotating ring 350. Since the inner cavities 351 and the inner cavities 351 are independent of each other, it is ensured that the inner cavities 351 and the inner cavities 351 do not interfere with each other, so that the weight of the insulating liquid 120 thrown off by each inner cavity 351 is substantially the same, so as to evenly cool the inner wall of the stator 200. Of course, in other embodiments, a connecting through hole may be provided from the first inner side surface 3511 of one inner cavity 351 toward the second inner side surface 3512 of an adjacent inner cavity 351, so that during the rotation of the third rotating ring 350, the insulating liquid 120 can flow from one inner cavity 351 to another inner cavity 351, thereby reducing the flow resistance and the kinetic energy loss.

[0169] For further information, please refer to Fig.38 The inner cavity 351 has an arc inner wall 3513 away from the axis of the third rotating ring 350, the arc inner wall 3513 is parallel to the outer circumference of the third rotating ring 350, and the distance from the arc inner wall 3513 to the outer circumference of the third rotating ring 350 is greater than the thickness of the partition.

[0170] In this embodiment, the inner cavity 351 also has an arc bottom wall 3514 close to the axis of the third rotating ring 350. The arc bottom wall 3514 is parallel to the arc inner wall 3513. The through hole 352 extends from the third outer peripheral surface 354 to the arc inner wall 3513. The distance from the arc bottom wall 3514 to the arc inner wall 3513 is greater than the depth of the through hole 352, so as to ensure that the inner cavity 351 shell can accommodate enough insulating liquid 120, reduce the weight of the third rotating ring 350, and reduce kinetic energy loss. By using the distance from the arc inner wall 3513 to the third outer peripheral surface 354 to be greater than the thickness of the partition, the weight of the insulating liquid 120 thrown off per unit time by the third rotating ring 350 is increased, thereby improving the cooling efficiency.

[0171] In another embodiment, see Fig.39 ,and Fig.38 The embodiment shown in FIG. 3 is substantially the same as that shown in FIG. 3 , except that the inner cavity 351 has a first top inner wall 3515 away from the axis of the third rotating ring 350 and a second top inner wall 3516 at an angle to the first top inner wall 3515. The opening of the through hole 352 communicating with the inner cavity 351 is arranged at the connection between the first top inner wall 3515 and the second top inner wall 3516, and the first top inner wall 3515 and the second top inner wall 3516 form a funnel shape, so that when the third rotating ring 350 throws off the insulating liquid 120, the restraining force of the first top inner wall 3515 and the second top inner wall 3516 on the insulating liquid 120 is reduced, so that the insulating liquid 120 can quickly flow out of the cavity 110, thereby improving the cooling efficiency.

[0172] Further, in Fig.38 Please refer to the embodiments of Fig.37 and Fig.38 The third rotating ring 350 is provided with a plurality of rows of through holes 352 , and each row of through holes 352 is arranged along an axial direction parallel to the third rotating ring 350 .

[0173] In this embodiment, each row of through holes 352 is connected to each inner cavity 351. Each row of through holes 352 is arranged parallel to the axial direction of the third rotating ring 350, so that the rate at which the insulating liquid 120 in each inner cavity 351 flows out from the multiple through holes 352 arranged laterally is consistent, thereby ensuring that the insulating liquid 120 thrown off by each inner cavity 351 is evenly arranged. Specifically, each row of through holes 352 is composed of two through holes 352 arranged side by side. Of course, in other embodiments, each row of through holes 352 can also be composed of three or more through holes 352. Each row of through holes 352 can also be arranged along a curve, so that multiple rows of through holes 352 are arranged in a spiral curve.

[0174] For further information, please refer to Fig.38, the through hole 352 is arranged near the inner wall of the inner cavity 351. Specifically, the through hole 352 is arranged near the first inner side surface 3511. When the third rotating ring 350 rotates in the first direction ( Fig.38 The first direction is the direction from the second inner side surface 3512 to the first inner side surface 3511. That is, the distance from the center of the through hole 352 to the first inner side surface 3511 is smaller than the distance from the center of the through hole 352 to the second inner side surface 3512. When each inner cavity 351 is connected to a row of through holes 352, the through holes 352 in a row are close to the first inner side surface 3511. When the third rotating ring 350 rotates in the first direction, the weight of the insulating liquid 120 thrown away is greater than the weight of the insulating liquid 120 thrown away when the third rotating ring 350 rotates in the other direction, so as to ensure the cooling efficiency of the motor 1000 in the normal operation state.

[0175] In another embodiment, Fig.40 As shown, each inner cavity 351 is connected to the first through hole 3521 and the second through hole 3522. The first through hole 3521 is close to the first inner side surface 3511, and the second through hole 3522 is close to the second inner side surface 3512. The first through hole 3521 and the second through hole 3522 are both regarded as circular holes, and the center line of the first through hole 3521 is a line that is circumferentially equal to the inner wall of the first through hole 3521, and the center line of the second through hole 3522 is a line that is circumferentially equal to the inner wall of the second through hole 3522. The distance from the center line of the first through hole 3521 to the first inner side surface 3511 is equal to the distance from the center of the second through hole 3522 to the second inner side surface 3512, so that no matter which direction the third rotating ring 350 rotates, the weight of the insulating liquid 120 thrown away by the inner cavity 351 is roughly the same, so that the motor 1000 can cope with more scenarios.

[0176] Further, in one embodiment, please continue to refer to Fig.37 , the through hole 352 extends along the radial direction of the third rotating ring 350. Specifically, the resistance of the insulating liquid 120 flowing out of the inner cavity 351 from the through hole 352 is reduced, ensuring that the insulating liquid 120 can smoothly flow out of the inner cavity 351 from the through hole 352, so that the weight of the insulating liquid 120 thrown off by the third rotating ring 350 per unit time is guaranteed, thereby ensuring the cooling efficiency of the motor 1000.

[0177] Furthermore, in one embodiment, the diameter of the through hole 352 is proportional to the volume of the inner cavity 351, that is, as the volume of the inner cavity 351 increases, the diameter of the through hole 352 also increases. By making the diameter of the through hole 352 proportional to the volume of the inner cavity 351, it is possible to ensure that the through hole 352 effectively removes the insulating liquid 120 in the inner cavity 351, so as to ensure that the weight of the insulating liquid 120 thrown off by the third rotating ring 350 per unit time is sufficient to meet the demand.

[0178] Furthermore, in one embodiment, an opening communicating with the inner cavity 351 is provided at the end of the third rotating ring 350 , and the opening is used to introduce the insulating liquid 120 into the inner cavity 351 .

[0179] In this embodiment, the third rotating ring 350 is provided with openings at one end face close to the rotor 400 and one end face away from the rotor 400. Specifically, the first inner side face 3511, the second inner side face 3512, the arc bottom wall 3514 and the arc inner wall 3513 are all extended to the end face of the third rotating ring 350, so that an opening communicating with the inner cavity 351 is formed on two opposite end faces of the third rotating ring 350. The axis of the rotor 400 is arranged horizontally, the rotor 400 is in a stationary state, and the distance from the arc inner wall 3513 to the axis of the rotating shaft 500 is greater than the distance from the upper surface of the insulating liquid 120 to the axis of the rotating shaft 500, so that the arc inner wall 3513 can be at least partially immersed in the insulating liquid 120, that is, the insulating liquid 120 can easily enter the inner cavity 351 through the opening, so as to ensure that the inner cavity 351 can obtain enough insulating liquid 120, thereby ensuring that the third rotating ring 350 can throw off enough weight of the insulating liquid 120 per unit time when rotating. Of course, in other embodiments, the third rotating ring 350 may also be provided with an opening communicating with the inner cavity 351 only on an end surface close to the rotor 400 , or may be provided with an opening communicating with the inner cavity 351 only on an end surface far from the rotor 400 .

[0180] The stirring structure 300 of the embodiment of the present application is not limited to the illustrated embodiment, and any structure that is intended to stir the insulating liquid 120 to shake off the inner circumferential surface of the stator 200 in a centrifugal motion is an embodiment of the stirring structure 300 of the present application.

[0181] Furthermore, in Fig.21 In the embodiment shown in FIG. 1 , the circumferential side of the stirring structure 300 faces the end of the stator 200. Since the end of the stator 200 is provided with the coil winding 220, the insulating liquid 120 thrown off by the stirring structure 300 contacts the coil winding 220 in large quantities, so that the temperature of the coil winding 220 can be rapidly reduced, thereby specifically cooling the coil winding 220 at the end of the stator 200, so that the operating efficiency of the motor 1000 is improved. It can be understood that the circumferential side of the stirring structure 300 facing the end of the stator 200 can be combined with the various embodiments listed above, and is not limited to the illustrated embodiments.

[0182] See also Fig.41 , combined with Fig.26The first outer peripheral surface 331 of the first rotating ring 330 has a first side 3311 close to the rotor 400 and a second side 3312 away from the rotor 400. For ease of understanding, a virtual center line 3313 is set between the first side 3311 and the second side 3312, and the center line 3313 is equidistant from the first side 3311 and the second side 3312. The coil winding 220 has a winding end face 2201 away from the rotor 400. For ease of understanding, a virtual end mid-surface 2202 is set between the winding end face 2201 and the end face of the rotor 400, and the end mid-surface 2202 is a plane that is equidistant from the winding end face 2201 and the end face of the rotor 400. The circumferential side of the stirring structure 300 is directly opposite to the end of the stator 200. It can be understood that the center line 3313 of the first rotating ring 330 is located on the middle surface of the end of the stator 200, that is, the insulating liquid 120 thrown away by the circumferential side of the first rotating ring 330 can be evenly in contact with the coil winding 220, thereby ensuring that the cooling efficiency of the coil winding 220 is maximized.

[0183] Furthermore, in Figures 9 to 41 In any embodiment, the stirring structure 300 moves in a first direction ( Fig.36 The first weight of the insulating liquid 120 is stirred when the stirring structure 300 rotates in the second direction ( Fig.36 When the rotor 400 rotates in the first direction (clockwise), the second weight of the insulating liquid 120 is stirred, the first direction is opposite to the second direction, and the first weight is greater than the second weight. It can be understood that when the rotor 400 rotates in the first direction, that is, the motor 1000 outputs the power to drive the ship 3000 forward, the stirring structure 300 throws away more insulating liquid 120 per unit time, so as to reduce the temperature in response to the high heat generated by the motor 1000 when driving the ship 3000 forward. When the rotor 400 rotates in the second direction, that is, the motor 1000 outputs the power to push the ship 3000 backward, the stirring structure 300 throws away less insulating liquid 120 per unit time, so as to reduce the temperature in response to the low heat generated by the motor 1000 when driving the ship 3000 backward. That is, the first weight of the insulating liquid 120 thrown away by the stirring structure 300 is greater than the second weight, in order to provide different cooling rates for the motor 1000 in two different usage scenarios of pushing the ship 3000 forward or backward, so as to ensure the optimization of the operating efficiency of the motor 1000, and it is not necessary for the stirring structure 300 to still throw away a large amount of insulating liquid 120 to cool it when the motor 1000 is running at a low heat generation, so as to prevent the waste of kinetic energy of the insulating liquid 120. It can be understood that the above-mentioned limitation that the first weight is greater than the second weight can be combined with the various embodiments listed above, and is not limited to the description of the illustrated embodiment.

[0184] In particular, specifically Fig.36The embodiment shows that, since the boss 341 of the second rotating ring 340 can be tilted toward one side, the weight of the insulating liquid 120 carried by one side of the boss 341 is different from the weight of the insulating liquid 120 carried by the other side. The boss 341 is tilted toward the first direction, and the boss 341 has a greater clamping force on the insulating liquid 120 at the narrower angle of the second outer peripheral surface 343. Therefore, the side of the boss 341 tilted toward the first direction can stir and throw away more weight of the insulating liquid 120. Therefore, when the second rotating ring 340 rotates toward the first direction, the weight of the insulating liquid 120 stirred and thrown away by the boss 341 is larger, and when the second rotating ring 340 rotates toward the second direction, the weight of the insulating liquid 120 stirred and thrown away by the boss 341 is smaller.

[0185] Furthermore, in Figure 10 to Figure 41 In any embodiment, the rotor 400 has a first operating frequency when rotating in a first direction, and has a second operating frequency when rotating in a second direction, and the first operating frequency is greater than the second operating frequency.

[0186] In this embodiment, specifically Fig.36 The embodiment shows that the rotor 400 rotates in the first direction, that is, the motor 1000 outputs the power to drive the ship 3000 forward. At this time, the rotor 400 operates at the first working frequency, and the working speed of the rotor 400 is relatively fast. The rotor 400 rotates in the second direction, that is, the motor 1000 outputs the power to drive the ship 3000 backward. At this time, the rotor 400 operates at the second working frequency, and the working speed of the rotor 400 is relatively slow. Obviously, when the motor 1000 controls the rotor 400 to rotate in the first direction, the speed of the rotor 400 is relatively fast, and the heat generated by the stator 200 is relatively large, and when the motor 1000 controls the rotor 400 to rotate in the second direction, the speed of the rotor 400 is relatively slow, and the heat generated by the stator 200 is relatively small. Therefore, by using the first weight greater than the second weight, energy consumption can be effectively saved. It can be understood that the above-mentioned limitation of the first working frequency being greater than the second working frequency can be combined with each of the above-mentioned embodiments, and is not limited to the description of the illustrated embodiment.

[0187] Furthermore, in Figure 10 to Figure 41 In any one of the embodiments, the stirring structure 300 is provided with a balancing plate 360 ​​adjacent to the rotor 400 , and the balancing plate 360 ​​limits the end of the rotor 400 .

[0188] In this embodiment, specifically Fig.42 and Fig.43 Schematic illustration, in Fig.36In the embodiment of the present invention, the balancing plate 360 ​​is disposed on the second outer peripheral surface 343, and the balancing plate 360 ​​has a first outer side surface 361 and a second outer side surface 362 opposite to the first outer side surface 361, and an outer end surface 363 connected between the first outer side surface 361 and the second outer side surface 362. The first outer side surface 361 is flush with the end surface of the second rotating ring 340 close to the rotor 400. Therefore, the first outer side surface 361 and the end surface of the second rotating ring 340 close to the rotor 400 jointly limit the rotor 400. Specifically, the motor 1000 is provided with two second rotating rings 340, and the two second rotating rings 340 are respectively disposed at both ends of the rotor 400. The balancing plates 360 of the two second rotating rings 340 jointly clamp the rotor 400 to prevent the rotor 400 from moving axially along the rotating shaft 500. The axis from the outer end surface 363 to the second rotating ring 340 is larger than the outer diameter of the rotor 400, so that the first outer side surface 361 and the end surface of the second rotating ring 340 close to the rotor 400 can effectively cover the end surface of the rotor 400, so that the balancing plate 360 ​​effectively ensures the balanced rotation of the rotor 400. More specifically, in order to ensure the structural strength of the third rotating ring 350, a plurality of bosses 341 are connected to the balancing plate 360 ​​to prevent the insulating liquid 120 stirred by the bosses 341 from being dispersed at the end of the second rotating ring 340 close to the rotor 400, so that the insulating liquid 120 thrown off by the second rotating ring 340 is effectively concentrated at the end of the stator 200, effectively cooling the end of the stator 200. It can be understood that the above-mentioned definition of the stirring structure 300 being provided with the balancing plate 360 ​​close to the rotor 400 can be combined with the various embodiments listed above, and is not limited to the description of the illustrated embodiment.

[0189] In another embodiment, Fig.44 As shown, the second rotating ring 340 is provided with a first balancing plate 364 and a second balancing plate 365. The first balancing plate 364 is arranged at one end of the second rotating ring 340 close to the rotor 400, and the second balancing plate 365 is arranged at one end of the second rotating ring 340 away from the rotor 400. The second balancing plate 365 can prevent the second rotating ring 340 from stirring the insulating liquid 120 to diffuse in the axial direction of the rotating shaft 500 away from the stator 200 and the rotor 400, so as to ensure that the stator 200 and the rotor 400 are effectively cooled.

[0190] Further, in Figures 10 to 44 In any one embodiment of Fig.45 As shown, the rotor 400 is provided with a weight-reducing hole 440 , and the stirring structure 300 is provided with a drainage hole 370 communicating with the weight-reducing hole 440 , and the drainage hole 370 is used to guide the insulating liquid 120 into the weight-reducing hole 440 .

[0191] The weight-reducing hole 440 is provided on the rotor support 430, and the weight-reducing hole 440 is isolated from the slot 431 to ensure that the magnetic member 420 is effectively and firmly fixed on the rotor support 430. Specifically, the rotor support 430 may be provided with a plurality of weight-reducing holes 440, and the plurality of weight-reducing holes 440 are evenly arranged around the axial direction of the rotor support 430. A plurality of slots 431 may be provided on the periphery of the rotor support 430, and a plurality of weight-reducing holes 440 may be close to the axis of the rotor 400 to reduce the distance between the magnetic member 420 and the stator 200, thereby facilitating the electromagnetic cooperation between the magnetic member 420 of the rotor 400 and the coil winding 220 of the stator 200, and increasing the torque of the rotor 400. The drainage hole 370 extends from the end face of the second rotating ring 340 away from the rotor 400 to the end face close to the rotor 400. Since the second rotating ring 340 conflicts with the rotor support 430, the drainage hole 370 can be docked with the weight-reducing hole 440. During the rotation of the second rotating ring 340, the insulating liquid 120 can flow into the drainage hole 370 and enter the weight-reducing hole 440 through the drainage hole 370, so that the insulating liquid 120 can effectively cool the rotor bracket 430. The rotor bracket 430 is provided with steel with a high thermal conductivity, so that the heat generated by the magnetic part 420 of the rotor 400 can be effectively conducted away by the rotor bracket 430 and the insulating liquid 120, so as to achieve the heat dissipation of the stator 200 and the rotor 400. It can be understood that the above-mentioned definition that the rotor 400 is provided with the weight-reducing hole 440 and the stirring structure 300 is provided with the drainage hole 370 connected with the weight-reducing hole 440 can be combined with the various embodiments listed above, and is not limited to the description of the illustrated embodiment.

[0192] Further, in Figure 1 to Figure 45 In any embodiment of the present invention, the weight of the insulating liquid 120 is inversely proportional to the operating frequency of the stirring structure 300. That is, the filling amount of the insulating liquid 120 in the cavity 110 is inversely proportional to the rotational speed of the stirring structure 300 when the motor 1000 is working. In other words, if the stirring structure 300 rotates at a higher speed when the motor 1000 is working, the filling amount of the insulating liquid 120 in the cavity 110 can be smaller. That is, when the rated speed of the motor 1000 is higher, less insulating liquid 120 can be filled in the cavity 110 to meet the cooling requirements. The volume of the insulating liquid 120 is roughly set to account for about 30% of the volume of the cavity 110. It can be understood that the above-mentioned limitation that the weight of the insulating liquid 120 is inversely proportional to the operating frequency of the stirring structure 300 can be combined with each of the above-mentioned embodiments, and is not limited to the description of the illustrated embodiment.

[0193] Further, in Figure 1 to Figure 45In any embodiment of the present invention, the volume of the insulating liquid 120 accounts for 30% to 50% of the volume of the cavity 110. It can be understood that, since the cooling efficiency of the insulating cavity 110 being thrown away to the inner circumferential surface of the stator 200 in a centrifugal motion is better than the cooling efficiency of the insulating liquid 120 contacting the inner circumferential surface of the stator 200 in a rotational motion, that is, the cooling efficiency of the stator 200 when the insulating liquid 120 does not fill the cavity 110 is greater than the cooling efficiency of the stator 200 when the insulating liquid 120 fills the cavity 110. When the insulating liquid 120 does not fill the cavity 110, the volume of the insulating liquid 120 accounts for 30% to 50% of the volume of the cavity 110, so that the stirring loss of the stirring structure 300 on the insulating liquid 120 and the cooling efficiency of the insulating liquid 120 can be optimized.

[0194] Further, in Figure 1 to Figure 45 In any of the embodiments, the portion of the housing 100 outside the cavity 110 is used to contact the heat dissipation medium, and the housing 100 transfers the heat of the insulating liquid 120 to the heat dissipation medium. The housing 100 is in contact with the heat dissipation medium, so that the heat dissipation medium can conduct away the heat of the housing 100, and the housing 100 absorbs the temperature of the stator 200 through the insulating liquid 120, thereby effectively conducting away the heat of the stator 200 of the motor 1000 and other components inside the motor 1000, and effectively dissipating the heat of the motor 1000 as a whole.

[0195] In one embodiment, the heat dissipation medium may be water. When the motor 1000 is in use, the motor 1000 is placed in a flowing water environment, and the outer surface 131 of the housing 100 away from the cavity 110 contacts the heat dissipation medium, that is, the outer surface 131 of the housing 100 contacts the water. After the housing 100 absorbs the heat inside the housing 100 through the insulating liquid 120, the water outside the housing 100 absorbs the heat of the housing 100, thereby achieving overall heat dissipation of the motor 100.

[0196] In another embodiment, see Fig.46 The housing 100 is provided with a cooling channel 190 between the outer surface 131 and the inner wall of the cavity 110, and the heat dissipation medium is passed into the cooling channel 190. An external cooling channel connected to the cooling channel 190 can also be provided outside the motor 1000. The housing 100 absorbs the internal heat of the housing 100 through the insulating liquid 120, and the heat dissipation medium passed into the cooling channel 190 further absorbs the heat of the housing 100. After the heat dissipation medium absorbs the heat of the motor 1000, it is conducted away through the external cooling channel 190, so that the motor 1000 is cooled as a whole.

[0197] It is understandable that in the embodiments of the present application, the heat dissipation medium based on the housing 100 is not limited to water, and the heat dissipation medium may also be any other heat-conducting medium such as air, nitrogen, oil, etc.

[0198] For further information, see Fig.47 In order to effectively cool down the motor 1000 in different areas, the area near the first end cover 141 in the cavity 110 is positioned as the front chamber, and the area near the second end cover 143 in the cavity 110 is defined as the rear chamber. In order to distinguish the cooling efficiency of the front chamber from the cooling efficiency of the rear chamber, a first stirring structure 301 is provided at one end of the rotor 400 near the first end cover 141, and a second stirring structure 302 is provided at one end of the rotor 400 near the second end cover 143. The first stirring structure 301 and the second stirring structure 302 can be different, so that the first stirring structure 301 and the second stirring structure 302 cool the front chamber and the rear chamber respectively, and the cooling efficiency is different. For example, the axial length of the rotating shaft 500 of the first stirring structure 301 is different from the axial length of the rotating shaft 500 of the second stirring structure 302, and the outer diameter of the first stirring structure 301 is different from the outer diameter of the second stirring structure 302.

[0199] In this embodiment, in order to effectively fix the first stirring structure 301 and the second stirring structure 302 on the rotating shaft 500, the motor 1000 further includes a first fixing sleeve 500 and a second fixing sleeve 600. The first fixing sleeve 500 and the second fixing sleeve 600 are both fixed to the rotating shaft 500 by means of a spiral connection, and the first fixing sleeve 500 locks the first stirring structure 301 to the end of the rotor 400 close to the first end cover 141, and the second fixing sleeve 600 locks the second stirring structure 302 to the end of the rotor 400 close to the second end cover 143. Of course, in other embodiments, the first stirring structure 301 and the second stirring structure 302 may also be fixed to both ends of the rotor 400 by other means.

[0200] In this embodiment, the motor 1000 further includes a bearing baffle 700, which is substantially U-shaped, fixed to the first bearing bracket 1411, and located between the first agitation structure 301 and the first bearing 530, so as to prevent the first bearing 530 from escaping from the first bearing bracket 1411 and colliding with the first agitation structure 301. Of course, in other embodiments, the motor 1000 may also be provided with two bearing baffles 700, which are respectively fixed to the first bearing bracket 1411 and the second bearing bracket 1431, and respectively resist the first bearing 530 and the second bearing 540.

[0201] In this embodiment, if Fig.48As shown, the first end cover 141 is provided with a first connecting plate 1419 extending into the side shell 142, and the second end cover 143 is provided with a second connecting plate 1429 extending into the side shell 142. The first connecting plate 1419 is fixed to the side shell 142, and the fixing method thereof is not limited. Any method intended to stabilize the first connecting plate 1419 and the side shell 142 can be used as an implementation method of the present application. The second connecting plate 1429 is fixed to the side shell 142, and the fixing method thereof is also not limited. Any method intended to stabilize the second connecting plate 1429 and the side shell 142 can be used as an implementation method of the present application. The first connecting plate 1419 is provided with at least one circle of first sealing grooves 1418, and the second connecting plate 1429 is provided with at least one circle of second sealing grooves 1428. In addition, a first rubber ring 1417 and a second rubber ring 1427 are respectively provided in the first sealing groove 1418 and the second sealing groove 1428. The first rubber ring 1417 and the second rubber ring 1427 both effectively contact the inner wall of the side shell 142 to achieve a sealed connection between the first end cover 141 and the side shell 142, and a sealed connection between the second end cover 143 and the side shell 142.

[0202] Furthermore, in this embodiment, if Fig.48 As shown, the motor 1000 is an underwater motor, and the outer surface 131 of the first end cover 141 and the outer surface 131 of the second end cover 143 are both conical to reduce the external water flow resistance of the motor 1000. In order to ensure the stability of the motor 1000 in underwater movement, a stabilizing plate 900 is provided on one side of the side shell 142. In the schematic diagram shown in the figure, the motor 1000 is in a normal working state underwater, and the stabilizing plate 900 extends vertically downward to reduce the shaking of the motor 1000 and ensure that the motor 1000 moves stably underwater.

[0203] In this embodiment, the motor 1000 further includes a support tube 800 fixed to the side shell 142, and a wire cavity 810 is provided inside the support tube 800. The side shell 142 is provided with a wire opening at the connection support, and the wires connected to the stator 200 coil winding 220 in the side shell 142 extend out of the side shell 142 through the wire opening. When the support tube 800 is fixed to the side shell 142, the wires of the motor 1000 extend into the wire cavity 810. The support tube 800 is sealed and connected to the side shell 142 to prevent the external medium of the housing 100 from entering the cavity 110. The support tube 800 effectively supports and stabilizes the side shell 142, so that the motor 1000 can stably operate underwater.

[0204] In this embodiment, the motor 1000 further includes a mounting flange 810 disposed at one end of the fixed support tube 800 away from the side shell 142, and the mounting flange 810 is used to fix the housing 100 to an external device. The external device may be a ship 3000, or a propulsion support of the ship 3000. It is understood that the motor 1000 of the embodiment of the present application is not limited to the above embodiments, and any structure that is simply combined or integrated with the motor 1000 of the embodiment and its module can be used as an embodiment of the present application.

[0205] See also Fig.49 The present application also provides a marine propeller 2000, which includes a motor 1000. The marine propeller 2000 also includes a propeller 2100, which is axially connected to the rotating shaft 500. The propeller 2100 is used to receive the rotation torque of the rotating shaft 500. When the propeller 2100 of the marine propeller 2000 is placed underwater, the motor 1000 outputs the rotation torque to the propeller 2100, so that the propeller 2100 rotates underwater, so that the propeller 2100 obtains the reverse force of the water flow, that is, the marine propeller 2000 as a whole obtains the propulsion force. It can be understood that when the rotor 400 of the motor 1000 rotates in a first direction, that is, the motor 1000 drives the propeller 2100 to rotate in the first direction, the marine propeller 2000 can obtain forward power, and when the rotor 400 of the motor 1000 rotates in a second direction, that is, the motor 1000 drives the propeller 2100 to rotate in the second direction, the marine propeller 2000 can obtain backward power, and the second direction is opposite to the first direction.

[0206] Specifically, the propeller 2100 has a fixed shaft hole 2110, and one end of the rotating shaft 500 of the motor 1000 is sleeved with a spline sleeve 2120, and the spline sleeve 2120 is sleeved on the end of the rotating shaft 500 extending from the housing 100. The spline sleeve 2120 and the end of the rotating shaft 500 extending from the housing 100 are matched with the spline and the spline groove, so that the rotation torque of the rotating shaft 500 can be effectively output to the spline sleeve 2120. The outer peripheral side wall of the spline sleeve 2120 is fixedly matched with the inner wall of the fixed shaft hole 2110, so that the rotation torque of the rotating shaft 500 is effectively transmitted to the propeller 2100. It can be understood that in other embodiments, the rotating shaft 500 can also be transmitted to the propeller 2100 through the rotation torque of the rotor 400 of the coupling device. In the embodiments of the present application, the propeller 2100 is not limited to the illustrated method, for example, the propeller 2100 can also be any form such as a folding propeller, a variable pitch propeller, a ducted propeller, and a rim propeller.

[0207] See also Fig.50In this embodiment, the marine propeller 2000 further includes a driver 2200, which is electrically connected to the motor 1000 via a conductive cable. The driver 2200 is composed of a plurality of control circuit modules. The driver 2200 is an integrated circuit that can actively work to control the motor 1000 to work according to the set direction, speed, angle, and response time, that is, the driver 2200 inputs current to the coil winding 220 to control the direction, speed, angle, and response time of the motor 1000. The driver 2200 can be integrated with the motor 1000, or it can be separated from the motor 1000 and systemized in multiple modules.

[0208] In this implementation, please refer to Fig.51 The marine propeller 2000 further includes a radiator 2300, which can receive heat from the driver 2200 and / or the housing 100 through a fluid pipeline. A heat dissipation fluid can be introduced into the fluid pipeline, and the heat dissipation fluid can contact the driver 2200 and / or the housing 100, thereby absorbing the heat from the driver 2200 and / or the housing 100, and transferring the heat to the radiator 2300. The radiator 2300 is provided with a heat dissipation structure, which is used to contact with an external cooling medium, thereby achieving heat dissipation and cooling of the marine propeller 2000 as a whole. Of course, in other embodiments, if the motor 1000 runs underwater, the motor 1000 directly dissipates heat through the water environment, and the radiator 2300 only needs to dissipate heat for the driver 2200.

[0209] In another embodiment, see Fig.52 ,and Figure 50-51 The marine propeller 2000 of the embodiment shown is substantially the same, except that the motor 1000 of the marine propeller 2000 is Figure 1 to Figure 48 The motor 1000 of the illustrated embodiment is provided with a different structure. The difference is that, in this embodiment, the rotor 400 of the motor 100 can drive the insulating liquid 120 to contact the end of the stator 200 in the form of centrifugal motion or rotational motion to cool the end of the stator 200, that is, in the motor 1000 applied to the marine propeller 2000, the rotor 400 can directly stir the insulating liquid 120 to contact the end of the stator 200 in the form of centrifugal motion or rotational motion.

[0210] Specifically, the rotor 400 is at least partially in contact with the insulating liquid 120. When the rotor 400 rotates, the rotor 400 stirs the insulating liquid 120 and throws it onto the inner wall of the surrounding stator 200. Since the rotor 400 is provided with a rotor support 430, the rotor support 430 can contact the insulating liquid 120, and the surface of the rotor support 430 can lift the insulating liquid 120 at a low position, so that the rotor 400 can stir the insulating liquid 120 and throw it onto the stator 200 around the rotor 400 to cool the stator 200. In particular, in order to cool the coil winding 220 at the end of the stator 200, the insulating liquid 120 stirred and thrown away by the rotor 400 at least covers the coil winding 220 at the end of the stator 200 to ensure the cooling efficiency of the motor 1000.

[0211] For further information, please see Fig.53 ,exist Fig.52 In the illustrated embodiment, the motor 1000 includes a second blocking member 1200, which is received in the cavity 110 and located between the rotor 400 and the shaft hole 150. The second blocking member 1200 is used to block the rotor 400 from shaking off the insulating liquid 120 to the shaft hole 150. The structure of the second blocking member 1200 is similar to that of the second blocking member 1200. Fig.15The structure of the first blocking member 1100 shown is roughly the same, and will not be repeated here. The second blocking member 1200 is different from the first blocking member 1100 in that the second blocking member 1200 blocks the insulating liquid 120 thrown off by the rotor 400. Specifically, the second blocking member 1200 is fixed on the rotating shaft 500 and is located at one end of the rotor 400 facing the rotating shaft hole 150. The second blocking member 1200 is arranged at a distance from the rotor 400, and the second blocking member 1200 can also conflict with the rotor 400. The second blocking member 1200 can also be arranged integrally with the rotor 400, for example, the second blocking member 1200 extends from the iron core of the rotor 400. As an embodiment, the second blocking member 1200 is provided with a third isolation plate 1201 accommodated in the rotating inner cavity 210. The third isolation plate 1201 is close to the end of the stator 200, and the third isolation plate 1201 blocks the insulating liquid 120 thrown out from the rotor 400 from flying toward the shaft hole 150. The third isolation plate 1201 throws the flying insulating liquid 120 to the inner circumferential surface of the end of the stator 200 close to the shaft hole 150, thereby effectively cooling the end of the stator 200 close to the shaft hole 150. It can be understood that in order to be able to evenly dissipate heat and cool down both ends of the stator 200, the motor 1000 also includes a third blocking member 1300, the third blocking member 1300 is close to the other end of the rotor 400 away from the shaft hole 150, the third blocking member 1300 is accommodated in the rotating inner cavity 210, the third blocking member 1300 is fixed to the shaft 500, and is used to prevent the insulation thrown out of the rotor 400 from splashing out of the rotating inner cavity 210. The third blocking member 1300 has a substantially similar structure to the second blocking member 1200, and will not be described in detail here. The second blocking member 1200 and the third blocking member 1300 are respectively disposed at two ends of the rotor 400 , so that the insulating liquid 120 thrown away by the second blocking member 1200 and the third blocking member 1300 can cool down the two ends of the stator 200 .

[0212] In another embodiment, see Fig.54 ,and Fig.53 The embodiment shown is substantially the same, except that the second blocking member 1200 is provided with a fourth isolation plate 1202, and the fourth isolation plate 1202 is located between the end of the stator 200 and the shaft hole 150. The fourth isolation plate 1202 is fixed to the shaft 500 and can rotate with the shaft 500. The distance from the fourth isolation plate 1202 to the end of the stator 200 close to the shaft hole 150 is smaller than the distance from the fourth isolation plate 1202 to the end cover, so that the fourth isolation plate 1202 can effectively block the insulating liquid 120 splashed from the rotating inner cavity 210 from flying toward the shaft hole 150. Under the action of rotation, the fourth isolation plate 1202 drives the insulating liquid 120 in contact with it to perform centrifugal motion, and finally throws it onto the inner wall of the casing 100 around the fourth isolation plate 1202, so as to achieve uniform contact and heat exchange between the insulating liquid 120 and the casing 100. In another embodiment, as Fig.55 As shown, Fig.52 The embodiment shown is substantially the same, except that the motor 1000 further includes a Figures 1 to 44 The stirring structure 300 of the embodiment shown is different in that the stirring structure 300 is arranged on the side of the rotating shaft 500, and the stirring structure 300 can stir the insulating liquid 120 to centrifugal motion or rotational motion under the rotation of the rotating shaft 500. In other words, the stirring structure 300 of this embodiment is consistent with the structure of the stirring structure 300 of the embodiment shown in the figure, and will not be repeated here. The difference is that the stirring structure 300 does not have to be limited to being contained in the rotating inner cavity 210, and the rotating structure does not have to be limited to being fixedly connected to the rotating shaft 500. Specifically, as Fig.55 As shown, as an embodiment, the stirring structure 300 is located outside the rotating space. The stirring structure 300 is provided with a rotating ring 390, and the rotating ring 390 is sleeved on the circumference of the rotating shaft 500. The inner diameter of the rotating ring 390 is larger than the inner diameter of the rotating shaft 500. When the rotating shaft 500 rotates, the rotating ring 390 rotates around the rotating shaft 500, so that the rotating ring 390 can contact the insulating liquid 120, and the circumference of the rotating ring 390 can adhere to part of the insulating liquid 120, and the insulating liquid 120 is thrown around the rotating shaft 500, so that the insulating liquid 120 contacts and heat exchanges with the components in the cavity 110, so as to cool down the components in the cavity 110, that is, by providing the stirring structure 300 at one end or both ends of the rotor 400, the cooling efficiency of the motor 1000 is further increased. Of course, in other embodiments, the rotating ring 390 can also be fixed to the circumference of the rotating shaft 500.

[0213] It is understood that the rotating ring 390 can be used in the same manner as Fig.25 The structure of the first rotating ring 330 shown in FIG. 1 is the same as that of the first rotating ring 330 shown in FIG. 1 , except that the rotating ring 390 is sleeved on the rotating shaft 500 instead of being fixed to the circumference of the rotating shaft 500. Of course, in other embodiments, the rotating ring 390 may also be of the same structure as that of the first rotating ring 330 shown in FIG. Fig.30 The second rotating ring 340 shown in FIG. Fig.37 The third rotating ring 350 shown has the same structure, but the difference is that the rotating ring 390 is not limited to being accommodated in the rotating inner cavity 1210, nor is it limited to being fixed to the outer peripheral side wall of the rotating shaft 500.

[0214] In another embodiment, it may be Fig.54 The embodiment shown and Fig.55 Combinations of the embodiments shown, such as Fig.56As shown, a second blocking member 1200 is provided between the stirring structure 300 near the rotating shaft hole 150 and the rotating shaft hole 150, and the stirring structure 300 near the rotating shaft hole 150 is provided outside the rotating inner cavity 210. The second blocking member 1200 blocks the insulating liquid 120 thrown away by the stirring structure 300, so as to prevent the insulating liquid 120 splashed from the stirring structure 300 from splashing to the rotating shaft hole 150. It can be understood that the first blocking member 1100 and the second blocking member 1200 of the embodiment of the present application are not limited to the above embodiments, and any function similar to the first blocking member 1100 and the second blocking member 1200 of the present embodiment, or a simple combination structure of the two can be used as the embodiment of the present application.

[0215] In one embodiment, see Fig.57 The motor 1000 is used to be arranged underwater, one end of the rotating shaft 500 is arranged outside the housing 100 and fixed to the propeller 2100, and the insulating liquid 120 can transfer the heat of the stator 200 and / or the rotor 400 to the water medium outside the housing 100 through the housing 100. It can be understood that the motor 1000 of the marine propeller 2000 runs underwater, and the heat of the motor 1000 can be conducted away through the contact between the housing 100 and the water medium, thereby achieving heat dissipation and cooling of the motor 1000. It can be understood that the marine propeller 2000 provided in the present application uses a motor 1000 that runs underwater, which is not limited to the above embodiments, and the motor 1000 in each of the above embodiments can be used as a motor 1000 that runs underwater.

[0216] In another embodiment, Fig.51 Based on the exemplary embodiments, Fig.57 As shown, the motor 1000 is used to be set on the water, and the marine propeller 2000 also includes a transmission mechanism 2400, which is connected between the propeller 2100 and the rotating shaft 500 to transmit the rotation torque of the rotating shaft 500 to the propeller 2100. The transmission mechanism 2400 can be a gear set, or a coupling, or a combination of a gear set and a coupling. Since the motor 1000 runs on the water, a cooling channel 190 isolated from the cavity 110 can be set between the outer surface 131 and the inner wall of the housing 100, and the cooling channel 190 is used to pass the coolant, and the insulating liquid 120 can conduct the heat of the stator 200 or / and the rotor 400 to the coolant through the housing 100. The coolant can be a medium such as water, oil, or liquid. The coolant can be passed to the radiator 2300 through a pipeline, and finally the heat is dissipated through the radiator 2300 to achieve cooling and cooling of the motor 1000. It is understandable that the marine propulsion unit 2000 provided in the present application uses a motor 1000 that operates on water, and is not limited to the above embodiments. The motor 1000 in each of the above embodiments can be used as a motor 1000 that operates on water.

[0217] For further information, see Fig.58 The embodiment of the present application further provides a ship 3000, the ship 3000 includes: Fig.50 In the illustrated embodiment of the marine propulsion device 2000 , the ship 3000 further includes a hull 3100 and a power source 3200 . The motor 1000 is movably disposed on the hull 3100 , and the power source 3200 is electrically connected to the stator 200 of the motor 1000 .

[0218] Specifically, the mounting flange of the motor 1000 is installed at the tail of the hull 3100, and the motor 1000 and the propeller 2100 can be located underwater for operation. The power supply 3200 is fixed in the hull 3100 and is connected to the motor 1000 via a conductive cable. The conductive cable passes through the support tube 800 and extends into the cavity 110. The driver 2200 can be fixed in the hull 3100 or outside the hull 3100. The power supply 3200 is a battery, and the power supply 3200 can be charged by an external power supply device. Of course, the ship 3000 of the embodiment of the present application is not limited to the ship propeller 2000 of the illustrated embodiment, and the manner in which the ship propeller 2000 of each of the above-mentioned embodiments is installed on the hull 3100 can be used as the embodiment of the ship 3000 provided in the present application.

[0219] Furthermore, if Fig.59 As shown, the ship 3000 also includes a steering mechanism 3300, which is connected to the casing 100 and the hull 3100 and is used to control the thrust direction of the propeller 2100. In this embodiment, the steering mechanism 3300 is installed at the tail of the hull 3100 to transfer the steering kinetic energy to the marine propeller 2000, so that the motor 1000 and the propeller 2100 rotate as a whole, thereby changing the thrust direction of the propeller 2100, so that the hull 3100 can change its course during travel.

[0220] Specifically, the steering mechanism 3300 includes a steering control end 3310, a steering bracket 3320 and a steering shaft 3330. The steering control end 3310 is connected to the steering shaft 3330 to control the rotation of the steering shaft 3330. The steering bracket 3320 is installed at the rear of the hull 3100. The steering shaft 3330 is rotatably arranged on the steering bracket 3320, and the mounting flange and the support pipe 800 are fixed to the steering shaft 3330 and rotate with the steering shaft 3330. The steering control end 3310 is provided with a steering motor and a steering transmission structure. The steering motor receives a steering control signal and outputs a steering torque to the steering transmission structure. The steering transmission structure transmits the rotation torque to the steering shaft 3330, thereby causing the motor 1000 and the propeller 2100 to steer. It can be understood that the steering mechanism 3300 of the present application is not limited to the above-mentioned embodiments, and any steering mechanism 3300 intended to change the flow direction of the propeller 2100 can be used as an implementation method of the text application. For example, the steering control end 3310 of the steering mechanism 3300 is provided with a hydraulic drive structure and a steering transmission structure, and the power is output to the steering transmission structure by manually controlling the hydraulic drive structure, and the steering transmission structure 3318 transmits the hydraulic drive force to the steering shaft 3330, thereby controlling the steering of the propeller 2100.

[0221] For further information, see Fig.60 , the ship 3000 also includes a lifting mechanism 3400, which is connected to the motor 1000 and the hull 3100 and is used to control the propeller 2100 to lift up. In this embodiment, the lifting mechanism 3400 is installed at the rear of the hull 3100 and is connected to the steering bracket 3320 to transfer the lifting kinetic energy to the steering bracket 3320, so that the steering bracket 3320 and the marine propeller 2000 are lifted as a whole, so that the motor 1000 and the propeller 2100 can sink into the water or leave the water surface. It can be understood that when the ship 3000 is in a sailing state, the lifting mechanism 3400 controls the steering bracket 3320 to sink and rotate relative to the hull 3100, so that the motor 1000 and the propeller 2100 sink into the water. When the ship 3000 is in a moored state, the lifting mechanism 3400 controls the steering bracket 3320 to lift and rotate relative to the hull 3100, so that the motor 1000 and the propeller 2100 are lifted out of the water, thereby preventing the motor 1000 and the propeller 2100 from being damaged in the water for a long time.

[0222] Specifically, the tilting mechanism 3400 includes a tilting control end 3410 and a tilting shaft 3420. The tilting control end 3410 controls the rotation of the tilting shaft 3420. The tilting shaft 3420 is rotatably arranged on the hull 3100. The steering bracket 3320 is connected to the tilting shaft 3420 and can rotate relative to the hull 3100 along with the tilting shaft 3420. The tilting control end 3410 is provided with a tilting motor and a tilting transmission structure. The tilting motor receives a tilting control signal and outputs a tilting rotation torque to the tilting transmission structure. The tilting transmission structure transmits the tilting rotation torque to the tilting shaft 3420, so that the steering mechanism 3300, the motor 1000 and the propeller 2100 are turned and tilted as a whole. It can be understood that the lifting mechanism 3400 of the present application is not limited to the above-mentioned embodiments, and any lifting mechanism 3400 that is intended to enable the motor 1000 and the propeller 2100 to be lifted relative to the hull 3100 can be used as an implementation method of the text application. For example, the lifting control end 3410 of the lifting mechanism 3400 is provided with a manual driving structure, and the lifting power is output to the lifting shaft 3420 through the manual driving structure, so that the steering bracket 3320, the motor 1000 and the propeller 2100 can be lifted relative to the hull 3100 under the action of the manual driving force.

[0223] Furthermore, if Fig.60 As shown, the ship 3000 also includes an interactive system 3500, which is arranged on the hull 3100 and is used to receive instructions and control the motor 1000 to work. In this embodiment, the interactive system 3500 can be installed on the bow of the hull 3100, and the interactive system 3500 is connected to the tilting mechanism 3400 and the steering mechanism 3300 to output steering, tilting and motor 1000 operation signals to the steering mechanism 3300, the tilting mechanism 3400 and the motor 1000. The interactive system 3500 is also used to receive control instructions from the user, and control the steering mechanism 3300, the tilting mechanism 3400 and the motor 1000 to operate according to the control instructions.

[0224] Specifically, the interactive system 3500 includes a steering wheel, a button, and a shift device. The steering wheel is rotatably arranged on the hull 3100, and is used to receive a user's steering control signal, and convert the steering control signal into a steering electrical signal. The steering electrical signal is transmitted to the steering motor of the steering mechanism 3300 via a conductive cable, thereby controlling the steering of the hull 3100. The button is installed at the bow of the hull 3100, and can be located on one side of the steering wheel, and is used to receive a user's tilting command to control the operation of the tilting structure, so that the motor 1000 and the propeller 2100 are tilted, or the motor 1000 and the propeller 2100 are controlled to sink underwater. The shift device is installed on the hull 3100, and is electrically connected to the driver 2200 via a conductive cable, so as to receive the user's forward and backward control commands, and transmit the forward and backward control commands to the driver 2200 to control the operation of the motor 1000. The interactive system 3500 also includes a display screen and a terminal, which is connected to the steering mechanism 3300, the tilting mechanism 3400 and the driver 2200 to receive user touch commands, and transmit the user touch commands to the terminal 3550, and control the steering mechanism 3300, the tilting mechanism 3400 and the ship propeller 2000 to operate through the terminal 3550. The terminal 3550 can also receive the operating information of the steering mechanism 3300, the tilting structure and the ship propeller 2000 through various sensors, and convert the operating information of the steering mechanism 3300, the tilting structure and the motor 1000 into information that can be displayed on the display screen 3540, so that the user can obtain the operating status of the steering mechanism 3300, the tilting structure and the ship propeller 2000. It can be understood that the interactive system 3500 of the present application is not limited to the above-mentioned embodiments, and any interactive system 3500 that is intended to enable a user to control and interact with the steering mechanism 3300, the lifting mechanism 3400 and the marine propeller 2000 can be used as an implementation method of the text application. For example, the interactive system 3500 can also be provided with a manual pure mechanical steering wheel 3510, and use pure mechanical torque to control the operation of the steering mechanism 3300.

[0225] It can be understood that the ship 3000 of the implementation mode of the present application is not limited to the above embodiments. Any embodiment similar to the above embodiments, or improvements combined with the above embodiments, can be used as the implementation mode of the present application.

[0226] The embodiments of the present application are introduced in detail above. Specific examples are used in this article to illustrate the principles and implementation methods of the present application. The description of the above embodiments is only used to help understand the method of the present application and its core idea. At the same time, for those skilled in the art, according to the idea of ​​the present application, there will be changes in the specific implementation methods and application scope. In summary, the content of this specification should not be understood as a limitation on the present application.

Claims

1. A motor, characterized in that: The motor comprises: A casing, wherein the casing has a cavity, and the cavity is filled with insulating liquid; A stator is fixed in the cavity, and a rotating inner cavity is provided inside the stator; a stirring structure, rotatably disposed in the rotating inner cavity and at least partially immersed in the insulating liquid, for stirring the insulating liquid to contact the stator in a centrifugal motion or rotational form, so that the insulating liquid cools the stator; The end of the stator is provided with a coil winding, the coil winding is used to generate a magnetic field after being energized, and the stirring structure stirs the insulating liquid to at least contact the coil winding; A rotor, which is rotatably disposed in the rotating inner cavity and electromagnetically cooperates with the stator, and the stirring structure and the rotor can rotate synchronously; The stirring structure is isolated from the rotor, the rotation axis of the stirring structure is coaxially arranged with the rotation axis of the rotor, and the stirring structure is spaced apart from the end of the rotor; A rotating shaft, one end of which is disposed in the cavity, and the rotor and the stirring structure are both fixed to the circumference of the rotating shaft; The stirring structure is provided with a first rotating ring, the first rotating ring has a first outer peripheral surface, the first outer peripheral surface has a preset surface roughness, so that the first outer peripheral surface can adhere to part of the insulating liquid; the first rotating ring is provided with a first matching hole, the inner wall of the first matching hole is fixedly matched with the outer peripheral side wall of the rotating shaft.

2. The motor according to claim 1, characterized in that The motor further comprises a rotating shaft, one end of which is arranged in the cavity, and the rotor is fixed to the circumference of the rotating shaft.

3. The motor according to claim 2, characterized in that The housing is provided with a shaft hole, one end of the shaft protrudes from the housing through the shaft hole, and the end of the shaft protruding from the housing is used for outputting rotational torque.

4. The motor according to claim 3, characterized in that The motor further comprises a first blocking member, which is fixed on the rotating shaft and is located between the stirring structure and the rotating shaft hole to prevent the stirring structure from throwing away the insulating liquid to the rotating shaft hole.

5. The motor according to claim 4, characterized in that The first blocking member is provided with a first isolation plate, which is accommodated in the rotating inner cavity. The first isolation plate has a cylindrical surface arranged circumferentially around the rotating shaft. The cylindrical surface is gap-matched with the inner circumferential surface of the rotating inner cavity, and the diameter of the cylindrical surface is larger than the outer diameter of the stirring structure.

6. The motor according to claim 5, characterized in that The first isolation plate is integrally arranged with the stirring structure, or is spaced apart from the stirring structure.

7. The motor according to claim 5, characterized in that The first blocking member is provided with a second isolation plate, the second isolation plate is located outside the rotating inner cavity, and the second isolation plate covers the opening of the rotating inner cavity toward the rotating shaft hole.

8. The motor according to claim 3, characterized in that The motor further comprises a sealing member, which is fixed to the housing and seals a gap between an outer peripheral side wall of the rotating shaft and an inner wall of the rotating shaft hole.

9. The motor according to claim 8, characterized in that The seal is provided with a first sealing lip facing the shaft hole and a second sealing lip facing the inner side of the cavity, the first sealing lip is used to prevent the medium outside the housing from entering the cavity, and the second sealing lip is used to prevent the insulating liquid from flowing out of the cavity.

10. The motor according to claim 1, characterized in that The rotor is at least partially immersed in the insulating liquid.

11. The motor according to claim 10, characterized in that The rotor is provided with a magnetic component, and the insulating liquid is in contact with the magnetic component to cool the magnetic component.

12. The motor according to claim 1, characterized in that The rotor is provided with a rotor support and a magnetic member fixed to the rotor support, and a part of the rotor support forms the stirring structure.

13. The motor according to claim 1, characterized in that The first outer peripheral surface is provided with a plurality of grooves and / or a plurality of convex humps.

14. The motor according to claim 13, characterized in that The plurality of grooves and / or the plurality of convex hulls are arranged in an array.

15. The motor according to claim 1, characterized in that The cavity is partially filled with the insulating liquid, and a portion of the first outer peripheral surface is immersed in the insulating liquid, so that the adhered portion of the insulating liquid is separated from the insulating liquid at a lower position and thrown away to the stator at a higher position.

16. The motor according to claim 1, characterized in that The cavity is completely filled with the insulating liquid, and the first outer peripheral surface drives the insulating liquid in the inner cavity to rotate.

17. The motor according to claim 1, characterized in that When the rated speed of the rotor is between 500 rpm and 1500 rpm, the weight of the insulating liquid thrown off by the first peripheral surface per unit time accounts for less than or equal to 30% of the total weight of the insulating liquid.

18. The motor according to claim 1, characterized in that The preset surface roughness is proportional to the weight of the insulating liquid adhered per unit area of ​​the first outer peripheral surface.

19. The motor according to claim 1, characterized in that The preset surface roughness is inversely proportional to the rated rotational speed of the rotor.

20. The motor according to claim 1, characterized in that The preset surface roughness is inversely proportional to the outer diameter of the first rotating ring.

21. The motor according to any one of claims 1 to 20, characterized in that: The circumferential side of the stirring structure faces the stator end portion so as to stir the insulating liquid to cool the stator end portion.

22. The motor according to any one of claims 1 to 20, characterized in that: The stirring structure stirs a first weight of insulating liquid when rotating in a first direction, and stirs a second weight of insulating liquid when rotating in a second direction. The first direction is opposite to the second direction, and the first weight is greater than the second weight.

23. The electric machine according to claim 22, characterized in that The rotor has a first operating frequency when rotating in the first direction, and has a second operating frequency when rotating in the second direction, wherein the first operating frequency is greater than the second operating frequency.

24. The motor according to any one of claims 1 to 20, characterized in that: The stirring structure is provided with a balancing plate adjacent to the rotor, and the balancing plate limits the end of the rotor.

25. The motor according to any one of claims 1 to 20, characterized in that: The rotor is provided with a weight-reducing hole, and the stirring structure is provided with a drainage hole communicated with the weight-reducing hole, and the drainage hole is used to guide the insulating liquid into the weight-reducing hole.

26. The motor according to any one of claims 1 to 20, characterized in that: The weight of the insulating liquid is inversely proportional to the operating frequency of the agitation structure.

27. The motor according to any one of claims 1 to 20, characterized in that: The volume of the insulating liquid accounts for 30% to 50% of the volume of the cavity.

28. The motor according to any one of claims 1 to 20, characterized in that: The portion of the housing outside the cavity is used to contact with a heat dissipation medium, and the housing transfers the heat of the insulating liquid to the heat dissipation medium.

29. A marine propeller, characterized in that: The marine propeller comprises the motor described in any one of claims 1 to 28.

30. A marine propeller, characterized in that: The marine propeller comprises a motor and a propeller, wherein the motor comprises: A casing, wherein the casing has a cavity, and the cavity is filled with insulating liquid; A stator is fixed in the cavity, and a rotating inner cavity is provided inside the stator; A rotor is rotatably disposed in the rotating inner cavity and electromagnetically cooperates with the stator. The rotor can drive the insulating liquid to contact the end of the stator in the form of centrifugal motion or rotational motion to cool the end of the stator; A rotating shaft, one end of which is disposed in the cavity and fixed to the rotor, and the other end of which is used to output the rotational torque; The propeller is connected to the rotating shaft and is used for receiving the rotational torque of the rotating shaft.

31. The marine propulsion device according to claim 30, characterized in that: The housing is provided with a shaft hole, the shaft passes through the shaft hole and is connected to the propeller, the motor includes a second blocking member, the second blocking member is accommodated in the cavity, and is located between the rotor and the shaft hole, and the second blocking member is used to prevent the rotor from throwing away the insulating liquid to the shaft hole.

32. The marine propulsion unit according to claim 30, characterized in that: The motor further comprises a stirring structure, which is arranged on the peripheral side of the rotating shaft. The stirring structure can stir the insulating liquid to make it centrifugal or rotary under the rotation of the rotating shaft.

33. The marine propulsion device according to claim 32, characterized in that: The stirring structure is fixed on the circumference of the rotating shaft.

34. The marine propeller according to any one of claims 32 to 33, characterized in that: The stirring structure is provided with a rotating ring arranged on the circumference of the rotating shaft, and the circumference of the rotating ring can stir the insulating liquid to make it centrifugal or rotational.

35. The marine propulsion unit according to claim 34, characterized in that: The peripheral surface of the rotating ring is provided with a plurality of convex humps and / or a plurality of concave grooves, and the plurality of convex humps and / or a plurality of concave grooves can stir the insulating liquid.

36. The marine propulsion unit according to claim 34, characterized in that: At least one boss is provided on the circumferential side of the rotating ring, and the at least one boss can stir the insulating liquid.

37. The marine propulsion unit according to claim 34, characterized in that: The circumferential side of the rotating ring is provided with at least one inner cavity and at least one through hole, the through hole is communicated with the inner cavity, the opening of the through hole away from the inner cavity is arranged on the outer circumferential side of the rotating ring, and the through hole and the inner wall of the inner cavity are used to stir the insulating liquid.

38. The marine propeller according to any one of claims 30 to 33, characterized in that: The motor is used to be arranged underwater, one end of the rotating shaft is arranged outside the casing and fixed to the propeller, and the insulating liquid can conduct the heat of the stator and / or the rotor to the water medium outside the casing through the casing.

39. The marine propeller according to any one of claims 30 to 33, characterized in that: The motor is used to be arranged on water, and the marine propeller further comprises a transmission mechanism, wherein the transmission mechanism is connected between the propeller and the rotating shaft to transmit the rotation torque of the rotating shaft to the propeller.

40. The marine propulsion device according to claim 39, characterized in that: The housing is provided with a cooling channel isolated from the cavity, and the cooling channel is used to pass a cooling liquid. The insulating liquid can transfer the heat of the stator and / or the rotor to the cooling liquid through the housing.

41. A ship, characterized in that: The ship comprises a marine propulsion device as described in any one of claims 30 to 40.

42. A vessel as claimed in claim 41, characterized in that The ship also includes a hull and a power source. The casing is movably arranged on the hull, and the power source is electrically connected to the stator of the motor.

43. A vessel as claimed in claim 42, characterised in that The ship also includes a steering mechanism, which is connected to the casing and the hull and is used to control the propeller flow direction.

44. A vessel as claimed in claim 42, characterized in that The ship also includes a tilting mechanism, which is connected to the motor and the hull and is used to control the tilting of the propeller.

45. A vessel as claimed in claim 42, characterised in that The ship also includes an interactive system, which is arranged on the hull and is used to receive instructions and control the operation of the motor.

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