Propulsion devices and water-based mobile equipment

Abstract

This application relates to the field of aquatic mobile equipment technology, aiming to solve the technical problem of poor sealing and waterproofing performance of some propulsion devices, and provides a propulsion device and aquatic mobile equipment. The propulsion device includes a frame, an electronic control assembly, a motor, and a sealing structure. The frame includes an above-water section and an underwater section. The underwater section has a guide pipe and a power housing. One end of the guide pipe has an inner tube inserted into the above-water section. The power housing is integrally disposed at the end of the guide pipe away from the inner tube. An electronic control cavity communicating with the inside of the inner tube is disposed within the guide pipe, and a motor cavity is disposed within the power housing. The electronic control assembly is fitted into the electronic control cavity. The motor is fixed within the motor cavity and electrically connected to the electronic control assembly to receive drive control signals from the electronic control assembly. The sealing structure is disposed between the outer peripheral wall of the inner tube and the above-water section. The beneficial effect of this application is to improve the sealing and waterproofing performance of the propulsion device.

Description

Technical Field

[0001] This application relates to the field of waterborne mobile equipment technology, and more specifically, to propulsion devices and waterborne mobile equipment. Background Technology

[0002] In some known electric outboard motors, a controller is used to control the motor's output power. As the motor power increases, the controller generates more heat, which can easily lead to controller malfunctions. With the increasing power requirements of electric outboard motors, the increased heat generation of the controller and the resulting complex overall heat dissipation issues need to be considered, as this can affect the overall lifespan of the electric outboard motor. Summary of the Invention

[0003] This application provides a propulsion device and a water-based mobile device.

[0004] This application provides a propulsion device, which includes a frame, an electronic control assembly, a motor, and a sealing structure. The frame includes an above-water section and an underwater section. The underwater section has a guide pipe and a power housing. One end of the guide pipe has an inner tube inserted into the above-water section. The power housing is integrally disposed at the end of the guide pipe away from the inner tube. An electronic control cavity communicating with the inside of the inner tube is disposed inside the guide pipe. A motor cavity is disposed inside the power housing. The electronic control assembly is at least partially fitted into the electronic control cavity and receives direct current through a DC conductive element disposed in the inner tube. The motor is fixed in the motor cavity and electrically connected to the electronic control assembly to receive drive control signals from the electronic control assembly. The propeller is connected to the motor through a torque transmission assembly and is located outside the power housing. The sealing structure is sealed between the outer peripheral wall of the inner tube and the above-water section.

[0005] The propulsion device of this application, by setting a guide pipe in the underwater part and setting an electronic control cavity inside the guide pipe, utilizes an electronic control component that is at least partially fitted into the electronic control cavity. This allows the electronic control component to contact and dissipate heat with the external water through the guide pipe, which is beneficial for cooling the electronic control component. Furthermore, the electronic control component can control the motor inside the power housing, simplifying the overall heat dissipation of the propulsion device and improving its service life. This application also provides a water-based mobile device, including a water-based carrier and the aforementioned propulsion device, wherein the frame of the propulsion device is used to connect to the water-based carrier. Attached Figure Description

[0006] To more clearly illustrate the technical solutions of the embodiments of this application, the accompanying drawings in the embodiments will be briefly described below. It should be understood that the following drawings only show some embodiments of this application and should not be regarded as a limitation of the scope. For those skilled in the art, other related drawings can be obtained based on these drawings without creative effort.

[0007] Figure 1This is one of the structural schematic diagrams of a water-based mobile device according to an embodiment of this application;

[0008] Figure 2 This is a schematic diagram of the connection between the propulsion device and the water carrier according to an embodiment of this application;

[0009] Figure 3 This is a schematic diagram of the structure of a propulsion device according to an embodiment of this application;

[0010] Figure 4 This is an exploded structural diagram of a propulsion device according to an embodiment of this application;

[0011] Figure 5 This is a cross-sectional view of a propulsion device according to an embodiment of this application, along the width direction of the cross-section of the guide tube;

[0012] Figure 6 This is a cross-sectional view of a propulsion device according to an embodiment of this application along the length of the cross-section of the guide tube;

[0013] Figure 7 This is a front view of a propulsion device according to an embodiment of this application after the underwater portion has been removed;

[0014] Figure 8 This is another exploded structural diagram of a propulsion device according to an embodiment of this application;

[0015] Figure 9 This is a schematic diagram of the propulsion device according to another embodiment of this application;

[0016] Figure 10 This is a partial structural schematic diagram of a propulsion device according to another embodiment of this application;

[0017] Figure 11 This is one of the cross-sectional views of a propulsion device according to another embodiment of this application;

[0018] Figure 12 This is a second cross-sectional view of a propulsion device according to another embodiment of this application;

[0019] Figure 13 This is a third cross-sectional view of a propulsion device according to another embodiment of this application;

[0020] Figure 14 This is a schematic diagram of the structure of a water-based mobile device according to another embodiment of this application;

[0021] Figure 15 This is an exploded structural diagram of a propulsion device according to another embodiment of this application;

[0022] Figure 16 This is a cross-sectional view of a propulsion device according to another embodiment of this application;

[0023] Figure 17for Figure 16 A magnified schematic diagram of a local structure;

[0024] Figure 18 This is a schematic diagram of the structure of a water-based mobile device according to another embodiment of this application.

[0025] Explanation of key component symbols:

[0026]

[0027]

[0028]

[0029] Detailed Implementation

[0030] The technical solutions in the embodiments of this application will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of this application, and not all embodiments.

[0031] It should be noted that when a component is said to be "fixed to" another component, it can be directly on the other component or there may be an intervening component. When a component is said to be "connected to" another component, it can be directly connected to the other component or there may be an intervening component. When a component is said to be "set on" another component, it can be directly set on the other component or there may be an intervening component. The terms "vertical," "horizontal," "left," "right," and similar expressions used in this document are for illustrative purposes only.

[0032] Unless otherwise defined, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art. The terminology used herein is for the purpose of describing particular embodiments only and is not intended to be limiting of the application. The term "or / and" as used herein includes any and all combinations of one or more of the associated listed items.

[0033] Some embodiments of this application are described in detail. Unless otherwise specified, the following embodiments and features can be combined with each other.

[0034] Example

[0035] See Figure 1This embodiment provides a water-based mobile device 200, including a water-based carrier 201 and a propulsion device 100. The frame 10 of the propulsion device 100 is connected to the water-based carrier 201. The propulsion device 100 is used to propel the water-based mobile device 200. In this embodiment, the propulsion device 100 is installed at the tail of the water-based carrier 201. In other embodiments, the connection position between the propulsion device 100 and the water-based carrier 201 can be adjusted according to the specific requirements of the installation position of the propulsion device 100 on the water-based carrier 201.

[0036] In this embodiment, the water-based mobile device 200 can be various water transportation vehicles such as passenger ships, yachts, fishing boats, and sailboats. The corresponding water-based carrier 201 is the hull, and the propulsion device 100 is the outboard motor 100a. Of course, the water-based mobile device 200 can also be amphibious transportation equipment, unmanned patrol boats, waterborne drones, etc., and is not limited here.

[0037] In this embodiment, see Figure 2 and Figure 3 The propulsion device 100 includes a frame 10, an electrical control assembly 18, a motor 19, a propeller 20, and a sealing structure 22. The frame 10 includes an above-water portion 11 and an underwater portion 12. The frame 10 is used to connect to a water body carrier 201. When the propulsion device 100 is in operation, the above-water portion 11 is located above the water body, and the underwater portion 12 is located within the water body.

[0038] The underwater section 12 is provided with a guide pipe 13 and a power housing 14. One end of the guide pipe 13 is provided with an inner tube 15 that is inserted into the above-water section 11. The inner tube 15 being inserted into the above-water section 11 means that the above-water section 11 is connected to the underwater section 12, and the inner tube 15 is located within the cavity of the above-water section 11. In this embodiment, the above-water section 11 is provided with an insertion hole 84 corresponding to the inner tube 15, and the inner tube 15 fits into the insertion hole 84. The power housing 14 is integrally disposed at the end of the guide pipe 13 away from the inner tube 15. In this embodiment, the inner tube 15, the guide pipe 13, and the power housing 14 are... Figure 2 The inner tube 15, the guide tube 13, and the power shell 14 are connected sequentially in the direction of gravity, forming a complete underwater part 12.

[0039] An electrical control cavity 16, communicating with the inner side of the inner tube 15, is provided inside the guide tube 13. A motor cavity 17 is provided inside the power housing 14, and the motor cavity 17 and the electrical control cavity 16 are connected. The electrical control component 18 is at least partially fitted inside the electrical control cavity 16 and obtains direct current through a DC conductive element 72 configured in the inner tube 15. The electrical control component 18 can be completely placed inside the electrical control cavity 16, or it can be partially placed inside the electrical control cavity 16 with the other part placed at the opening of the inner tube 15.

[0040] The motor 19 is fixed inside the motor housing 17 and electrically connected to the electronic control component 18 to receive drive control signals from the electronic control component 18. The motor 19 can be connected to the power housing 14 via bolts, screws, or other fastening structures, thereby fixing the motor 19 inside the motor housing 17. The motor 19 and the electronic control component 18 are electrically connected via a three-phase cable or a three-phase conductive copper busbar, or a combination of both, and the motor 19 receives drive control signals from the electronic control component 18. A communication line can also be installed between the motor 19 and the electronic control component 18 to transmit communication data.

[0041] The propeller 20 is connected to the motor 19 via a torque transmission assembly 21, located outside the power housing 14. The torque output by the motor 19 can be transmitted to the propeller 20 via the torque transmission assembly 21, driving the propeller 20 to rotate and generate thrust. In this embodiment, the torque transmission assembly 21 can be a single drive shaft or a group of drive shafts connected in sequence. The torque transmission assembly 21 can also be a combination of shafts from various reducers such as a gear reduction mechanism, a ball screw reduction mechanism, a worm gear reduction mechanism, or a planetary gear reduction mechanism. The torque transmission assembly 21 is not limited to the forms listed above; any combination of shafts capable of converting the rotational torque of the motor 19 into the rotational torque of the propeller 20 is an embodiment of the torque transmission assembly 21 in this application.

[0042] The sealing structure 22 is located between the outer peripheral wall of the inner tube 15 and the above-water portion 11 to seal and waterproof the connection between the above-water portion 11 and the underwater portion 12. This prevents external water from entering the electrical control chamber 16 and the motor chamber 17 of the underwater portion through the connection between the above-water portion 11 and the underwater portion 12, thus avoiding short circuits and damage to the electrical control components 18 and the motor 19 due to water contact. Clearly, dividing the entire propulsion device 100 into the above-water portion 11 and the underwater portion 12 simplifies the frame 10 structure of the propulsion device 100, reduces the number of sealing locations, and improves the water-proof sealing performance of the propulsion device 100.

[0043] By providing an inner tube 15 at the end of the guide tube 13, and inserting the inner tube 15 into the insertion hole 84 of the water surface part 11 from bottom to top, compared to the method of providing a tube for the water surface part 11 and inserting it from top to bottom for sealing, the risk of water flowing down into the guide tube 13 after passing through the joint between the water surface part and the inner tube 15 is avoided. That is, in this embodiment, after the external water enters the joint between the end face of the guide tube 13 and the water surface part 11, most of it will be blocked on the outer periphery of the inner tube 15 and will not rise to the port of the inner tube 15 on its own. A small amount of water will only rise along the outer periphery of the inner tube 15 under the action of external pressure. Under the sealing structure 22, a small amount of water will also be further isolated on the outer periphery of the inner tube 15.

[0044] The sealing structure 22 improves the waterproof performance at the connection between the underwater part 12 and the above-water part 11, significantly reducing the possibility of water seeping into the electrical control cavity 16 or the motor cavity 17 and damaging the motor 19 or the electrical control components 18, thus extending the service life of the propulsion device 100. Furthermore, the sealing structure 22 can simultaneously seal gaps in two different directions: the circumferential gap between the inner tube 15 and the above-water part 11, and the end face gap between the above-water part 11 and the underwater part 12, further improving the overall sealing and waterproof performance of the frame 10.

[0045] The electronic control component 18 is housed within the guide pipe 13 of the underwater section 12, and the motor 19 is housed within the power housing 14 of the underwater section 12. During the operation of the propulsion device 100, the electronic control component 18 exchanges heat with the guide pipe 13, and the guide pipe 13 exchanges heat with the water area. This allows the electronic control component 18 to exchange heat with the water area through the guide pipe 13, improving the heat exchange efficiency of the electronic control component 18, simplifying the heat dissipation structure of the propulsion device 100, enabling the electronic control component 18 to operate at higher efficiency, and extending the service life of the propulsion device 100. The motor 19 exchanges heat with the power housing 14, and the power housing 14 exchanges heat with the water area. This allows the motor 19 to exchange heat with the water area through the power housing 14, improving the heat exchange efficiency of the motor 19, further simplifying the heat dissipation structure of the propulsion device 100, and improving the propulsion efficiency of the propulsion device 100.

[0046] In this embodiment, see Figure 3 The DC conductive component 72 is connected to a conductive cable 82, which passes through the above-water part 11 and enters the inner tube 15, and then is electrically connected to the electronic control component 18 to transmit DC power to the electronic control component 18.

[0047] In this embodiment, see Figure 2 The propulsion device 100 also includes a tilting clamp 66 and a tilting drive 67. The tilting clamp 66 includes a tilting portion 66a for connecting to the above-water portion 11 and a fixing portion 66b for fixing to the water carrier 201. One end of the tilting drive 67 is rotatably connected to the fixing portion 66b, and the other end is rotatably connected to the tilting portion 66a. The tilting drive 67 is telescopic to drive the frame 10 to tilt relative to the water carrier 201. The fixing portion 66b of the tilting clamp 66 can be fixedly connected to the water carrier 201 by welding or bolting.

[0048] The lifting drive 67 can be a hydraulic cylinder, an electro-hydraulic power cylinder, or other device capable of outputting power. For example, when the lifting drive 67 is an electro-hydraulic push rod, one end of it is connected to the fixed part 66b, and the other end is a telescopic end connected to the lifting part 66a. Through telescopic extension, the electric push rod can push the frame 10 to rotate relative to the lifting clamp 66, so that the electrical control component 18, motor 19, and propeller 20 connected to the frame 10 rotate and lift relative to the water carrier 201.

[0049] In this embodiment, see Figure 2 The propulsion device 100 also includes a steering assembly 68, which is disposed on the water-surface portion 11 and connected to the lifting portion 66a of the lifting clamp 66 to provide torque for steering the frame 10 relative to the water-surface carrier 201. In this embodiment, the frame 10 is connected to the steering assembly 68, and the steering axis of the frame 10 rotatably connected to the lifting portion 66a of the lifting clamp 66 is perpendicular to the steering axis of the steering assembly 68, that is, the rotation axis (e.g., horizontal direction) of the lifting shaft of the lifting portion 66a is perpendicular to the rotation axis (e.g., gravity direction) of the steering shaft of the steering assembly 68. In this embodiment, the steering assembly 68 includes a steering drive 69 and a steering shaft 70. The steering drive 69 is mounted on the frame 10 and connected to the steering shaft 70. The steering shaft 70 is rotatably connected to the frame 10 and fixedly connected to the raised portion 66a. The steering drive 69 drives the steering shaft 70 to rotate, thereby causing the frame 10 to rotate relative to the raised portion 66a, that is, relative to the water carrier 201, to adjust the direction of the output power of the propulsion device 100. In this embodiment, the steering drive 69 can be a steering motor. Of course, in other embodiments, the steering shaft 70 can be fixedly connected to the frame 10 and rotatably connected to the raised portion 66a, with the steering drive 69 fixed to the raised portion 66a, and the steering drive 69 driving the steering shaft 70 to rotate.

[0050] Understandably, a reduction assembly 75 is also provided between the steering drive 69 and the steering shaft 70. The reduction assembly 75 reduces the rotational torque output to the steering drive 69 and increases the torque to provide the frame 10 with an effective steering force relative to the water carrier 201.

[0051] In this embodiment, see Figure 1 The propulsion device 100 also includes a central controller 78, which is connected to the electronic control component 18 via a control line 79. The propulsion device 100 also includes a battery 85, which is placed in the water carrier 201 and connected to the electronic control component 18 and the motor 19 via a conductive cable 82 to provide power to the electronic control component 18 and the motor 19.

[0052] In this embodiment, see Figure 1The waterborne mobile device 200 also includes a steering controller 88 and a steering device 87. The steering device 87 is located at the bow of the waterborne carrier 201, and the steering controller 88 is located inside the waterborne carrier 201. The steering controller 88 is electrically connected to the steering device 87, and the steering controller 88 is connected to the central controller 78 via a control line 79. The steering controller 88 can receive steering signals from the steering device 87 and transmit the steering signals to the central controller 78. The central controller 78 then transmits control signals to the electronic control component 18 and the motor 19. The electronic control component 18 can adjust the operating parameters of the drive component 67 and the steering component 68.

[0053] In this embodiment, see Figure 1 The waterborne mobile device 200 also includes a steering handle 86, which is mounted on the frame 10 of the propulsion device 100 and is used to receive steering signals. The steering handle 86 can transmit steering signals to the central controller 78, which then transmits control signals to the electronic control component 18 and the motor 19. The electronic control component 18 can adjust the operating parameters of the drive component 67 and the steering component 68. Through the arrangement of the steering handle 86 and the steering device 87, the waterborne carrier 201 can be steered at both ends, improving the user experience.

[0054] In this embodiment, see Figure 4 A flange 63 is provided on the periphery of the end of the guide pipe 13 adjacent to the inner pipe 15. Multiple locking elements 64 are provided along the circumference of the flange 63. The end face of the above-water portion 11 adjacent to the underwater portion 12 covers the flange 63 and is locked with the multiple locking elements 64. The flange 63 reduces the connection difficulty between the guide pipe 13 and the above-water portion 11 and improves the connection reliability between the above-water portion 11 and the guide pipe 13. Due to the fixed connection between the underwater portion 12 and the above-water portion 11, the locking method of using the locking elements 64 to lock the flange 63 and the above-water portion 11 from bottom to top allows the underwater portion 12 to adapt to various shapes of the above-water portion 11, reducing the structural requirements of the above-water portion 11 and avoiding the increase in structural complexity of the above-water portion 11 due to the reserved assembly and locking space.

[0055] Of course, in other embodiments where the structural requirements for the above-water portion 11 are not high, a flange 63 can be provided on the periphery of the end of the above-water portion 11 near the underwater portion 12, and the end face of the guide pipe 13 near the above-water portion 11 can cover the flange 63 and be locked with multiple locking members 64, thus achieving the function of fastening the guide pipe 13 to the above-water portion 11. In other embodiments, a first flange is provided on the periphery of the end of the guide pipe 13 near the inner pipe 15, and a second flange is provided on the periphery of the end of the above-water portion 11 near the underwater portion 12. The locking members 64 are connected to the first flange and the second flange to fix the guide pipe 13 and the above-water portion 11.

[0056] In this embodiment, see Figure 4 The diameter of the inner tube 15 allows the electronic control assembly 18 to be inserted into the electronic control cavity 16 from the inner tube 15. This allows the electronic control assembly 18 to be installed from the inner tube 15 into the electronic control cavity 16, thereby eliminating the need to open an assembly port in the underwater part 12 that matches the size of the electronic control assembly 18. This improves the integrity and sealing of the underwater part 12, reduces the assembly steps of the propulsion device 100, and increases the assembly efficiency of the propulsion device 100.

[0057] In this embodiment, the electronic control component 18 is partially disposed inside the inner tube 15 and partially disposed inside the electronic control cavity 16, so that the electronic control component 18 can be installed using part of the space of the above-water part 11, thereby reducing the volume of the underwater part 12. In other embodiments, the electronic control component 18 can be completely placed inside the electronic control cavity 16, increasing the contact area between the electronic control component 18 and the underwater part 12, thereby improving the heat exchange efficiency of the electronic control component 18.

[0058] In this embodiment, see Figure 4 The electronic control assembly 18 includes a control circuit board 34, a drive circuit board 35, and a power circuit board 36, which are connected in sequence, as well as a first heat exchanger 40 and a second heat exchanger 44. The first heat exchanger 40 and the second heat exchanger 44 are spaced apart along the width direction of the cross-section of the guide tube 13. At least two of the control circuit board 34, the drive circuit board 35, and the power circuit board 36 are placed between the first heat exchanger 40 and the second heat exchanger 44 to exchange heat with the guide tube 13 through the first heat exchanger 40 and the second heat exchanger 44, thereby improving the heat exchange efficiency of the electronic control assembly 18 and reducing the operating temperature of the electronic control assembly 18. In other embodiments, only the first heat exchanger 40 or the second heat exchanger 44 may be provided separately.

[0059] In this embodiment, see Figure 4 and Figure 5 An installation notch 23 is provided on one side of the inner tube 15, and a first locking part 24 is provided on the other side of the inner tube 15 opposite to the installation notch 23. The electronic control assembly 18 is provided with a first fastener 25 that is locked to the first locking part 24 via the installation notch 23. In this embodiment, the first fastener 25 is fixedly connected to the first heat exchanger 40 and the inner tube 15. In other embodiments, the first fastener 25 may also pass through at least one of the control circuit board 34, the drive circuit board 35, and the power circuit board 36 and be fixedly connected to the inner tube 15. The installation notch 23 is used to avoid the first fastener 25 when it is fixed to the first locking part 24, so that the first fastener 25 can be threadedly connected to the inner tube 15 when its axis coincides with the first fastening hole 24a, thereby improving the fastening reliability of the first fastener 25.

[0060] In this embodiment, see Figure 5The first locking part 24 is a first fastening hole 24a, and the first fastener 25 passes through the electronic control component 18 and is threadedly connected to the first fastening hole 24a. Furthermore, the first fastening hole 24a allows the first heat exchanger 40 or the second heat exchanger 44 to be attached to the guide tube 13, ensuring the heat exchange efficiency of the first heat exchanger 40 or the second heat exchanger 44. In other embodiments, the first locking part 24 can also be a protruding post extending from the inner surface of the inner tube 15, and the first fastener 25 locks the electronic control component 18 onto the protruding post. In this embodiment, in addition to the first heat exchanger 40 or the second heat exchanger 44 being tightly pressed against the inner wall of the guide tube 13 by the first fastener 25, thermally conductive structures such as thermally conductive silicone grease can also be filled between the first heat exchanger 40 and the guide tube 13 or between the second heat exchanger 44 and the guide tube 13 to ensure the heat exchange efficiency between the first heat exchanger 40 or the second heat exchanger 44 and the guide tube 13.

[0061] In this embodiment, see Figure 4 and Figure 5 A locking hole 26 is provided on one side of the guide tube 13 near the electronic control component 18, away from the inner tube 15. A second locking part 27 is provided on the side of the guide tube 13 away from the locking hole 26. A second fastener 28 is provided at the end of the electronic control component 18 away from the inner tube 15, which is locked to the second locking part 27 through the locking hole 26. In this embodiment, the second fastener 28 is fixedly connected to the first heat exchanger 40 and the guide tube 13. In other embodiments, the second fastener 28 may also pass through at least one of the control circuit board 34, the drive circuit board 35, and the power circuit board 36 and be fixedly connected to the guide tube 13. In this embodiment, the end of the electronic control component 18 away from the inner tube 15 is the end of the electronic control component 18 located on the lower side in the direction of gravity. The above-mentioned structural arrangement makes the first fastener 25 and the second fastener 28 distributed in the direction of gravity, thereby improving the fixing reliability of the electronic control component 18 in the guide tube 13.

[0062] In this embodiment, see Figure 4 The mounting notch 23 of the inner tube 15 and the locking hole 26 at the guide tube 13 are located on the same side of the underwater part 12, so that the operator can complete the locking operation of the electronic control component 18 from the same side of the underwater part 12. The connection between the electronic control component 18 and the inner tube 15 and the connection between the electronic control component 18 and the guide tube 13 are also located on the same side of the underwater part 12, so as to avoid stress tension problems at the two connection points between the electronic control component 18 and the underwater part 12 and improve the fixing reliability of the electronic control component 18.

[0063] In this embodiment, see Figure 4 and Figure 5The locking hole 26 allows the operator to easily insert the second fastener 28 into the electrical control cavity 16 using tools, enabling the second fastener 28 to pass through the first heat exchanger 40 and connect with the second locking part 27 of the guide tube 13. This eliminates the need for an excessively large notch in the guide tube 13. For example, in this embodiment, the locking hole 26 is relatively small, and a sealing plug 29 that seals against the locking hole 26 is provided on the side wall of the guide tube 13. Clearly, an excessively large notch would significantly impact the sealing performance of the guide tube 13. Therefore, in this embodiment, the impact on the sealing and waterproofing performance of the guide tube 13 is minimal, and it still maintains excellent waterproofing performance during actual use.

[0064] In this embodiment, see Figure 4 and Figure 5 The second locking part 27 is a second fastening hole 27a, and the second fastener 28 passes through the electronic control component 18 and is threadedly connected to the second fastening hole 27a. Furthermore, the second fastening hole 27a allows the first heat exchanger 40 or the second heat exchanger 44 to be attached to the guide tube 13, ensuring the heat exchange efficiency of the first heat exchanger 40 or the second heat exchanger 44. In other embodiments, the second locking part 27 can also be a protruding post extending from the inner surface of the inner tube 15, and the second fastener 28 locks the electronic control component 18 onto the protruding post. In this embodiment, thermally conductive structures such as thermally conductive silicone grease can be filled between the first heat exchanger 40 and the guide tube 13 or between the second heat exchanger 44 and the guide tube 13, which can also ensure heat exchange efficiency.

[0065] In this embodiment, see Figure 4 The cross-section of the guide tube 13 is racetrack-shaped. The front and rear outer surfaces of the guide tube 13 are both curved surfaces, while the two outer surfaces are rectangular planes. To ensure balanced internal stress in the guide tube 13, the wall thickness is uniform, and the inner wall shape is the same as the outer surface shape. This allows the inner wall of the guide tube 13 to have two relatively large flat surfaces. These large flat surfaces facilitate the fitting of the electronic control component 18 within the guide tube 13, ensuring that the two opposite sides of the electronic control component 18 in the thickness direction have a large contact area with the inner wall of the guide tube 13. This increases the heat exchange efficiency between the electronic control component 18 and the guide tube 13, while also making the internal space of the guide tube 13 compact and facilitating the installation of the electronic control component 18 in a top-to-bottom insertion manner. In this embodiment, see... Figure 5 and Figure 6The control circuit board 34 covers the opening 76 of the inner tube 15. The drive circuit board 35 and the power circuit board 36 are stacked together inside the electronic control cavity 16, and the stacking direction is configured to be the cross-sectional width direction of the guide tube 13, which is perpendicular to the propulsion direction of the propulsion device 100. By covering the opening 76 of the inner tube 15 with the control circuit board 34, the space at the connection between the inner tube 15 and the above-water part 11 can be utilized. Therefore, only the drive circuit board 35 and the power circuit board 36 need to be installed at the guide tube 13. Compared to the case where the control circuit board 34, drive circuit board 35, and power circuit board 36 are all stacked on the guide tube 13, in this embodiment, the dimensions of the drive circuit board 35 and the power circuit board 36 along the cross-sectional width direction of the guide tube 13 are smaller, thereby reducing the cross-sectional width of the guide tube 13 and further reducing the fluid resistance encountered by the guide tube 13 during the operation of the propulsion device 100, thus improving the propulsion efficiency.

[0066] In this embodiment, see Figures 4 to 6 The electronic control assembly 18 also includes a cover 37 that presses against the end face of the inner tube 15, and a control circuit board 34 is securely positioned between the cover 37 and the end face of the inner tube 15. The cover 37 is fixedly connected to the end of the inner tube 15 facing away from the guide tube 13, thereby ensuring that the control circuit board 34 can be stably fixed between the cover 37 and the inner tube 15, thus guaranteeing the installation reliability of the control circuit board 34. In this embodiment, the end of the cover 37 facing the inner tube 15 is provided with a cover flange 63, and the cover flange 63 is connected to the end face of the inner tube 15 by fastening screws.

[0067] In this embodiment, see Figures 4 to 6 The cover 37 is provided with a DC copper bus interface 38. The electronic control assembly 18 also includes a DC copper bus 39 inserted through the DC copper bus interface 38. The DC copper bus 39 also passes through the control circuit board 34 and is connected to the power circuit board 36. The DC copper bus interface 38 facilitates the DC copper bus 39 to extend into the electronic control cavity 16 and connect to the power circuit board 36. In this embodiment, the DC conductive element 72 is connected to the DC copper bus 39 to output DC power to the power circuit board 36 through the DC copper bus 39. The power circuit board 36 is also electrically connected to the control circuit board 34 and the drive circuit board 35 so that DC power is output to the control circuit board 34 and the drive circuit board 35.

[0068] In this embodiment, see Figure 6 and Figure 8 The electronic control assembly 18 also includes a shielding magnetic ring 77 fixed to the cover 37 and surrounding the DC copper busbar 39. The shielding magnetic ring 77 can improve the electromagnetic compatibility of the DC copper busbar 39, so that the control signal transmission of the control circuit board 34 is less affected by high-frequency noise, and ensures the transmission quality of the control signal.

[0069] In this embodiment, see Figure 6and Figure 8 The cover 37 is provided with a magnetic ring groove 83 for accommodating a shielding magnetic ring 77, and a DC copper busbar 39 passes through the inside of the magnetic ring groove 83.

[0070] In this embodiment, see Figure 1 , Figure 2 and Figure 6 The central controller 78 is fixed to the water-surface portion 11. The central controller 78 is connected to the control circuit board 34 via a control line 79. The electronic control assembly 18 also includes a control line magnetic ring 80 fixed to the cover 37, through which the control line 79 passes. The control line magnetic ring 80 improves the electromagnetic compatibility of the control line 79, reducing high-frequency interference and noise during signal shielding transmission within the control line 79, thus ensuring the transmission quality of the control signal. The central controller 78 can be used to transmit control signals with the electronic control assembly 18 to control the operation of drive structures such as the motor 19, the lifting drive component 67, and the steering drive component 69. In other embodiments, the central controller 78 can also be fixed within the water-surface carrier 201.

[0071] In this embodiment, see Figure 7 The first heat exchanger 40 is attached to the inner wall of the drive circuit board 35 and the electronic control cavity 16. The drive circuit board 35 exchanges heat with the first heat exchanger 40 to transfer the heat generated during operation to the first heat exchanger 40. The first heat exchanger 40 then exchanges heat with the inner wall of the electronic control cavity 16. In this embodiment, the inner wall of the electronic control cavity 16 is jointly formed by the guide pipe 13 and the inner pipe 15. The heat generated by the first heat exchanger 40 can be transferred to the guide pipe 13 and the inner pipe 15. The inner pipe 15 can exchange heat with the guide pipe 13, thereby ultimately transferring the heat to the guide pipe 13. The guide pipe 13 then exchanges heat with the water, ultimately realizing the heat exchange between the drive circuit board 35 and the water, and achieving the cooling of the drive circuit board 35.

[0072] In this embodiment, see Figure 7The first heat exchanger 40 is a metal plate 41a. The metal plate 41a has good heat exchange performance. In this embodiment, the metal plate 41a can be a solid metal plate or a hollow metal plate. A hollow metal plate can be filled with a circulating heat exchange liquid to further improve heat exchange efficiency. The first heat exchanger 40 is provided with a first thermally conductive adhesive 42 on one or both sides. Providing the first thermally conductive adhesive 42 on one side of the first heat exchanger 40 means that the first thermally conductive adhesive 42 is provided between the first heat exchanger 40 and the inner wall of the electronic control cavity 16, or between the first heat exchanger 40 and the drive circuit board 35. Providing the first thermally conductive adhesive 42 on both sides of the first heat exchanger 40 means that the first thermally conductive adhesive 42 is provided between the first heat exchanger 40 and the inner wall of the electronic control cavity 16, and also between the first heat exchanger 40 and the drive circuit board 35. The first thermally conductive adhesive 42 is responsible for transferring heat from the drive circuit board 35 to the guide pipe 13. The first thermally conductive adhesive 42 can improve the heat exchange efficiency between the drive circuit board 35 and the first heat exchanger 40.

[0073] In this embodiment, the first thermally conductive adhesive 42 can be set as a variety of thermally conductive adhesives such as thermally conductive silicone grease, silicone thermally conductive adhesive, epoxy resin AB glue, acrylic thermally conductive adhesive, and polyurethane thermally conductive adhesive, and can also be set as a thermally conductive adhesive film to facilitate its fixed installation on the first heat exchanger 40.

[0074] In this embodiment, see Figure 7 The electronic components 43 on the drive circuit board 35 are disposed on the side facing the power circuit board 36, and the first heat exchanger 40 is attached to the side of the drive circuit board 35 facing away from the power circuit board 36. This protects the electronic components 43 and facilitates the placement of the first thermally conductive adhesive 42 between the first heat exchanger 40 and the drive circuit board 35. In other embodiments, the electronic components 43 may also be attached to the first heat exchanger 40.

[0075] In this embodiment, see Figure 7 The second heat exchanger 44 is attached to the inner wall of the power circuit board 36 and the electronic control cavity 16. In this embodiment, the inner wall of the electronic control cavity 16 is jointly formed by the guide pipe 13 and the inner pipe 15. The heat generated by the first heat exchanger 40 can be sent to the guide pipe 13 and the inner pipe 15. The inner pipe 15 can exchange heat with the guide pipe 13, thereby ultimately transferring the heat to the guide pipe 13. The guide pipe 13 then exchanges heat with the water, ultimately realizing the heat exchange between the power circuit board 36 and the water, and achieving the cooling of the power circuit board 36.

[0076] In this embodiment, see Figure 7 The second heat exchanger 44 is a metal plate 44a. The second heat exchanger 44 is provided with a second thermally conductive adhesive 45 on one or both sides. The second thermally conductive adhesive 45 is responsible for the heat transfer from the power circuit board 36 to the guide pipe 13.

[0077] The metal plate 44a has good heat exchange performance. In this embodiment, the metal plate 44a can be a solid metal plate or a hollow metal plate. The hollow metal plate can be filled with a circulating heat exchange liquid to further improve the heat exchange efficiency. The second heat exchanger 44 is provided with a second thermally conductive adhesive 45 on one or both sides. Providing the second thermally conductive adhesive 45 on one side of the second heat exchanger 44 means that the second thermally conductive adhesive 45 is provided between the second heat exchanger 44 and the inner wall of the electrical control cavity 16, or a first thermally conductive adhesive 42 is provided between the second heat exchanger 44 and the drive circuit board 35. Providing the second thermally conductive adhesive 45 on both sides of the second heat exchanger 44 means that the second thermally conductive adhesive 45 is provided between the second heat exchanger 44 and the inner wall of the electrical control cavity 16, and also between the second heat exchanger 44 and the drive circuit board 35. The second thermally conductive adhesive 45 is responsible for transferring heat from the drive circuit board 35 to the guide pipe 13. The second thermally conductive adhesive 45 can improve the heat exchange efficiency between the power circuit board 36 and the second heat exchanger 44. In this embodiment, the second thermally conductive adhesive 45 can be set as a variety of thermally conductive adhesives such as thermally conductive silicone grease, silicone thermally conductive adhesive, epoxy resin AB glue, acrylic thermally conductive adhesive, and polyurethane thermally conductive adhesive, and can also be set as a thermally conductive adhesive film to facilitate its fixed installation on the second heat exchanger 44.

[0078] In this embodiment, see Figure 7 To meet the high power requirements of the motor 19, multiple large capacitors 46 are arranged on the side of the power circuit board 36 away from the drive circuit board 35, and a second heat exchanger 44 is attached to the multiple large capacitors 46. To lower the center of gravity of the electronic control assembly 18, the multiple large capacitors 46 are positioned on the side of the circuit board closer to the motor 19, thus allowing space on the side of the power circuit board 36 near the inner tube 15 to accommodate small electronic components and facilitating connection between the power circuit board 36 and the DC copper busbar 39 on the side near the inner tube 15. It is understood that the large capacitors 46 easily generate a large amount of heat during operation of the power circuit board 36. The second heat exchanger 44, attached to the multiple large capacitors 46, can improve the heat exchange efficiency between the large capacitors 46 and the guide tube 13, thereby improving the heat dissipation performance of the power circuit board 36. In other embodiments, the large capacitors 46 can also be placed on the side of the power circuit board 36 facing the drive circuit board 35 and connected to the guide tube 13 using an additional heat exchange structure.

[0079] In this embodiment, referring to 5, the power housing 14 includes a main housing 47 integral with the guide pipe 13 and an end cap 48 covering the main housing 47. The motor cavity 17 has a power opening 49 at the point where the main housing 47 mates with the end cap 48, and the end cap 48 seals the power opening 49. The power opening 49 facilitates the installation of the motor 19 and its rotating shaft into the main housing 47, thus facilitating the assembly of the motor 19 with the power housing 14. Furthermore, after the motor 19 is installed into the main housing 47 through the power opening 49, the power opening 49 also provides a connection space between the motor 19 and the electronic control component 18 via a connecting wire, thereby facilitating the connection and installation of the motor 19 and the electronic control component 18. In this embodiment, referring to... Figure 7 and Figure 8 The propulsion device 100 also includes a copper busbar assembly 50 that electrically connects the electronic control component 18 and the motor 19. A portion of the copper busbar assembly 50 is located within the motor housing 17, directly opposite the power opening 49. The copper busbar assembly 50 enables electrical connection between the motor 19 and the electronic control component 18. Positioning a portion of the copper busbar assembly 50 within the motor housing 17 directly opposite the power opening 49 facilitates installation of the copper busbar assembly 50 between the electronic control component 18 and the motor 19 from the power opening 49. In this embodiment, see... Figure 8 The propulsion device 100 also includes a Hall sensor 81, which is located near the copper busbar assembly 50 and is used to sense the magnetic field of the copper busbar assembly 50. When the copper busbar assembly 50 transmits control electrical signals between the motor 19 and the electronic control assembly 18, the Hall sensor 81 can sense the change in the magnetic field of the copper busbar assembly 50 and calculate the current and voltage values ​​based on the change in the magnetic field to sample the current and voltage values ​​flowing through the copper busbar assembly 50. In this embodiment, the Hall sensor 81 is fixedly connected to the end of the electronic control assembly 18 near the motor 19.

[0080] In this embodiment, see Figure 8 The copper busbar assembly 50 includes three-phase copper busbar connectors 51, which are staggered sequentially in the direction directly opposite to the power opening 49. This staggered arrangement means that the three-phase copper busbar connectors 51 are spaced apart in the width direction of the inner tube 15's cross-section, and simultaneously spaced apart in the pushing direction of the pushing device 100. The staggered three-phase copper busbar connectors 51 can be sequentially connected to staggered three-phase lines 53, facilitating accurate installation of the three-phase lines 53 from the power opening 49 onto the three-phase copper busbar connectors 51.

[0081] In this embodiment, see Figure 8The propulsion device 100 also includes a copper busbar bracket 52 fixed inside the motor cavity 17. A three-phase copper busbar connector is fixed to the copper busbar bracket 52, and the three-phase lines 53 of the motor 19 are fixedly connected to the three-phase copper busbar connector via the copper busbar bracket 52. The copper busbar bracket 52 can be fixedly connected to the guide pipe 13 using screws or other fastening structures, thus securing the copper busbar bracket 52 to the motor cavity 17. The copper busbar bracket 52 provides stable and reliable support for the three-phase copper busbar connector 51, keeping the motor 19, three-phase lines 53, three-phase copper busbar connector 51, and guide pipe 13 relatively fixed, preventing loosening during operation of the propulsion device 100.

[0082] In this embodiment, see Figure 8 The propulsion device 100 also includes an end cap sealing ring 55, which is sealed at the connection between the main housing 47 and the end cap 48 to provide a waterproof seal. The end cap 48 has a portion extending into the inside of the main housing 47. The end cap sealing ring 55 is installed between the portion of the end cap 48 inside the main housing 47 and the inner wall of the main housing 47. The end cap sealing ring 55 abuts against the outer surface of the end cap 48 and the inner surface of the main housing 47, thereby providing a waterproof seal at the connection between the end cap 48 and the main housing 47. In this embodiment, the end cap sealing ring 55 can be a sealing rubber ring, a sealing waterstop, etc.

[0083] In this embodiment, see Figure 8 The power housing 14 also includes a reducer housing 56 that covers the main housing 47 away from the end cover 48. A reduction chamber 57 is formed between the reducer housing 56 and the main housing 47. The propulsion device 100 also includes a reducer 58 connected between the motor 19 and the propeller 20. The reducer 58 is disposed within the reduction chamber 57. In this embodiment, the reducer 58 is connected to the output end of the motor 19 and to the propeller 20 to transmit the increased torque after reduction to the propeller 20, causing the propeller 20 to rotate and output propulsion force. The reducer 58 can be a gear reduction mechanism, a ball screw reduction mechanism, a worm gear reduction mechanism, a planetary gear reduction mechanism, or other structural forms. The reducer 58 is not limited to the forms listed above; any transmission structure that can convert the rotational torque of the motor 19 into the rotational torque of the propeller 20 is an embodiment of the reducer 58 in this application. In other embodiments, depending on the size of the reducer 58 in the propulsion direction, a part of the reducer 58 may be disposed within the reducer housing 56, and another part may be located within the main housing 47.

[0084] In this embodiment, see Figure 8The propulsion device 100 also includes a reducer housing sealing ring 71, which is sealed to the connection between the main housing 47 and the reducer housing 56 to provide a waterproof seal. In this embodiment, the separate arrangement of the reducer housing 56 and the main housing 47 facilitates the installation of the reducer 58 within the reducer housing 56 and the assembly and installation with the propeller 20.

[0085] In this embodiment, see Figure 6 The reduction chamber 57 is isolated from the motor chamber 17. Cooling lubricating oil 59 is installed inside the reduction chamber 57, which lubricates and cools the reducer 58. The cooling lubricating oil 59 can reduce the rotational friction of the reducer 58 and can also facilitate heat exchange between the reducer 58 and the guide pipe 13 to improve the heat dissipation efficiency of the reducer 58.

[0086] The reduction chamber 57 is isolated from the motor chamber 17. This means that the output shaft of the motor 19 and the inner wall of the main housing 47 are sealed together, thereby isolating the reduction chamber 57 on the side of the motor 19 closest to the propeller 20 from the motor chamber 17. This prevents the cooling lubricating oil 59 from entering the motor chamber 17 from the reduction chamber 57 and then into the electrical control chamber 16, ensuring the reliable operation of the electrical control component 18.

[0087] In other embodiments, the motor cavity 17 can be isolated from the electronic control cavity 16, and the reduction cavity 57 and the motor cavity 17 can be connected. In this way, the motor 19 and the reducer 58 can be lubricated and cooled simultaneously by the cooling lubricating oil 59, which improves the cooling efficiency of the motor 19.

[0088] In this embodiment, see Figure 6 and Figure 8 The propulsion device 100 also includes a mechanical pump 60 disposed in the reducer housing 56. The mechanical pump 60 receives the rotational torque of the motor 19 and pumps the cooling lubricating oil 59 in the reduction chamber 57 from a lower position to a higher position. In this embodiment, the mechanical pump 60 is provided with a rotor. When the mechanical pump 60 is running, the rotation of the rotor can create a negative pressure, thereby pumping the cooling lubricating oil 59 from a lower position to a higher position. Thus, the cooling lubricating oil 59 does not need to be completely immersed in the reduction chamber 57, but fills the bottom of the reduction chamber 57, thereby saving the amount of cooling lubricating oil 59 used.

[0089] Specifically, in this embodiment, see Figure 6 and Figure 8The reducer 58 includes a first gear shaft 73 and a second gear shaft 74. The first gear shaft 73 is connected to the motor 19, and the second gear shaft 74 is connected to the propeller 20. The first gear shaft 73 and the second gear shaft 74 are respectively provided with meshing reduction gears. In this embodiment, the first gear shaft 73 is located at a lower position in the direction of gravity of the reduction cavity 57, and the second gear shaft 74 is located at a higher position in the reduction cavity 57.

[0090] Therefore, the cooling lubricating oil 59 can fill the bottom of the reduction chamber 57. When the reducer 58 stops running, the level of the cooling lubricating oil 59 should be approximately in contact with the reducer 58. Utilizing the viscosity of the cooling lubricating oil 59, the first gear shaft 73, during rotation, can carry the cooling lubricating oil 59 adhering to it to the meshing point with the second gear shaft 74, thus lubricating the second gear shaft 74. The second gear on the second gear shaft 74 and the first gear on the first gear shaft 73 are both helical gears. The axial component of the helical gear meshing motion between the second gear shaft 74 and the first gear shaft 73 can drive the cooling lubricating oil 59 to various parts of the first gear shaft 73 and the second gear shaft 74. During the continuous meshing motion of the first gear shaft 73 and the second gear shaft 74, the cooling lubricating oil 59 can maintain a certain height in the reduction chamber 57 and submerge one end of the reduction chamber 57. The cooling lubricating oil 59 is agitated to both ends of the reduction chamber 57 by the rotational motion inside the reduction chamber 57. As a result, the second gear shaft 74, which is located at a higher position, both ends of the second gear shaft 74, and the end of the first gear shaft 73 connected to the propeller 20 can all be lubricated. The cooling lubricating oil 59 does not need to submerge the second gear shaft 74, thus saving the amount of cooling lubricating oil 59 without affecting the lubrication effect.

[0091] Figure 9 Another propulsion device 100 is shown, which differs from the aforementioned propulsion device 100 in that the specific structure of the guide tube 13 of the propulsion device 100 is different.

[0092] See Figure 9 and Figure 10 The guide tube 13 has an electrical control mounting opening 30 and an electrical control cover plate 31 on its side. The electrical control component 18 is housed in the electrical control cavity 16 through the electrical control mounting opening 30. The diameter of the inner tube 15 allows the DC conductive component 72 connected to the electrical control component 18 to be disposed within the inner tube 15. In this embodiment, the electrical control mounting opening 30 is provided on the side of the guide tube 13 in the width direction. In other embodiments, the electrical control mounting opening 30 can also be provided on the side of the guide tube 13 in the length direction, and the electrical control component 18 can also be installed in the electrical control cavity 16.

[0093] In this embodiment, the inner tube 15 has a smaller diameter, which reduces the assembly difficulty between the inner tube 15 and the guide tube 13, reduces the volume occupied by the inner tube 15, and facilitates the design of different shapes and specifications for the propulsion device 100. At this time, it is difficult for the electronic control component 18 to be installed into the guide tube 13 from the inner tube 15. After opening the electronic control installation opening 30 on the side of the guide tube 13, the electronic control component 18 can be conveniently installed into the guide tube 13 from this point. Furthermore, the fixed installation of the electronic control component 18 and the guide tube 13 is also relatively convenient. Specifically, the opening diameter of the electronic control installation opening 30 allows the electronic control component 18 to be installed into the electronic control cavity 16 from the direction of one side wall of the overlapping guide tube 13, and then the conductive component is inserted from the inner tube 15 to connect the conductive component with the electronic control component 18. Then, the electronic control component 18 is locked and fixed along the direction perpendicular to the circuit board surface of the electronic control component 18, thereby realizing the installation and fixation of the electronic control component 18.

[0094] In this embodiment, a support boss 32 is provided on the inner side of the electrical control mounting opening 30, and the periphery of the electrical control cover plate 31 overlaps with the support boss 32. The support boss 32 can cooperate with the electrical control cover plate 31 to improve the connection sealing between the electrical control cover plate 31 and the guide pipe 13. In other embodiments, an annular groove can also be provided on the inner side of the electrical control mounting opening 30, and an annular protrusion that cooperates with the annular groove can be provided on the surface of the electrical control cover plate 31.

[0095] The propulsion device 100 also includes an electrically controlled seal 33, which seals between the periphery of the electrically controlled cover plate 31 and the supporting boss 32 to provide a sealing and waterproofing effect at the connection between the electrically controlled cover plate 31 and the guide pipe 13. In this embodiment, the electrically controlled seal 33 can be a sealing rubber ring, a sealing waterstop, etc.

[0096] Figure 11 Another propulsion device 100 is shown, which differs from the aforementioned propulsion device 100 in that the specific structure of the guide tube 13 and the electronic control component 18 of the propulsion device 100 is different.

[0097] In this embodiment, see Figures 11 to 13 The cross-section of the guide tube 13 is elliptical. The elliptical shape of the guide tube 13 causes its side surface to form an arc surface in the width direction of the cross-section, resulting in lower fluid resistance. When the propulsion direction of the propulsion device 100 is perpendicular to the width direction of the cross-section of the guide tube 13, the propulsion efficiency of the propulsion device 100 is higher.

[0098] In this embodiment, see Figures 11 to 13The electronic control assembly 18 includes a control circuit board 34, a drive circuit board 35, and a power circuit board 36, which are electrically connected in sequence. The control circuit board 34, drive circuit board 35, and power circuit board 36 are stacked along the minor axis of the cross-section of the guide tube 13. The elliptical guide tube 13 can be divided into spaces with various chord lengths along its minor axis, allowing for the installation of circuit boards of different sizes, thus facilitating the installation of circuit boards of different sizes. For example, the drive circuit board 35 and power circuit board 36 can be stacked in the space with a larger chord length (such as the middle part of the elliptical guide tube 13), while the control circuit board 34, having a shorter length, can be placed in the space with a smaller chord length. This improves the space utilization of the electronic control cavity 16 within the guide tube 13.

[0099] In this embodiment, see Figures 11 to 13 The control circuit board 34 is located adjacent to the inner wall of the electronic control cavity 16.

[0100] In this embodiment, see Figure 11 The electronic components 43 on the control circuit board 34 face the inner wall of the adjacent electronic control cavity 16. During the operation of the control circuit board 34, the electronic components 43 generate significant heat. By making them face the inner wall of the adjacent electronic control cavity 16, the heat exchange efficiency between the electronic components 43 and the water through the guide pipe 13 can be improved, thereby improving the cooling effect of the control circuit board 34.

[0101] In this embodiment, see Figure 12 and Figure 13 The electronic control assembly 18 also includes a first heat exchanger 40 disposed between the control circuit board 34 and the inner wall of the electronic control cavity 16. The control circuit board 34 exchanges heat with the first heat exchanger 40 to transfer the heat generated during operation to the first heat exchanger 40. The first heat exchanger 40 then exchanges heat with the guide pipe 13, and the guide pipe 13 then exchanges heat with the water area, ultimately achieving heat exchange between the control circuit board 34 and the water area, thus cooling the electronic control circuit board. The first heat exchanger 40 enhances the heat exchange efficiency between the control circuit board 34 and the water area.

[0102] In this embodiment, the first heat exchanger 40 is a metal plate 41b. A first thermally conductive adhesive 42 is provided on one or both sides of the first heat exchanger 40. The first thermally conductive adhesive 42 is responsible for controlling the heat transfer from the circuit board 34 to the guide pipe 13. The metal plate 41b has good heat exchange performance. In this embodiment, the metal plate 41b can be a solid metal plate or a hollow metal plate. A hollow metal plate can be filled with a circulating heat exchange liquid to further improve heat exchange efficiency. The first thermally conductive adhesive 42 is provided on one or both sides of the first heat exchanger 40. Providing the first thermally conductive adhesive 42 on one side of the first heat exchanger 40 means that the first thermally conductive adhesive 42 is provided between the first heat exchanger 40 and the inner wall of the electronic control cavity 16, or between the first heat exchanger 40 and the control circuit board 34. The first heat exchanger 40 is provided with first thermally conductive adhesive 42 on both sides, meaning that first thermally conductive adhesive 42 is provided between the first heat exchanger 40 and the inner wall of the electronic control cavity 16, and also between the first heat exchanger 40 and the control circuit board 34. The first thermally conductive adhesive 42 is responsible for transferring heat from the control circuit board 34 to the guide tube 13. The first thermally conductive adhesive 42 can improve the heat exchange efficiency between the control circuit board 34 and the first heat exchanger 40.

[0103] In this embodiment, the first thermally conductive adhesive 42 can be set as a variety of thermally conductive adhesives such as thermally conductive silicone grease, silicone thermally conductive adhesive, epoxy resin AB glue, acrylic thermally conductive adhesive, and polyurethane thermally conductive adhesive, and can also be set as a thermally conductive adhesive film to facilitate its fixed installation on the first heat exchanger 40.

[0104] In this embodiment, see Figure 12 The drive circuit board 35 is located between the control circuit board 34 and the power circuit board 36. Alternatively, see... Figure 13 The power circuit board 36 is located between the control circuit board 34 and the drive circuit board 35. In this embodiment, the positional relationship between the drive circuit board 35 and the power circuit board 36 can be determined based on their actual heat dissipation requirements, or the structural installation conflicts among the control circuit board 34, drive circuit board 35, and power circuit board 36.

[0105] In this embodiment, see Figures 11 to 13 The electronic control assembly 18 also includes a second heat exchanger 44, which is attached to the inner wall of the electronic control cavity 16 on the side away from the control circuit board 34. The drive circuit board 35 or the power circuit board 36 is attached to the second heat exchanger 44. The drive circuit board 35 / power circuit board 36 exchanges heat with the second heat exchanger 44 to transfer the heat generated during operation to the first heat exchanger 40. The first heat exchanger 40 then exchanges heat with the guide pipe 13, and the guide pipe 13 then exchanges heat with the water area, ultimately achieving heat exchange between the drive circuit board 35 / power circuit board 36 and the water area, thus cooling the electronic control circuit board. The first heat exchanger 40 enhances the heat exchange efficiency between the drive circuit board 35 / power circuit board 36 and the water area.

[0106] In this embodiment, the second heat exchanger 44 is a metal plate 44b. A second thermally conductive adhesive 45 is provided on one or both sides of the second heat exchanger 44. The second thermally conductive adhesive 45 is responsible for transferring heat from the drive circuit board 35 or the power circuit board 36 to the guide pipe 13. When the drive circuit board 35 is located between the control circuit board 34 and the power circuit board 36, the second thermally conductive adhesive 45 is responsible for driving the power circuit board 36 to transfer heat to the guide pipe 13. When the power circuit board 36 is located between the control circuit board 34 and the drive circuit board 35, the second thermally conductive adhesive 45 is responsible for driving the drive circuit board 35 to transfer heat to the guide pipe 13. The metal plate 44b has good heat exchange performance. In this embodiment, the metal plate 44b can be a solid metal plate or a hollow metal plate. A hollow metal plate can be filled with a circulating heat exchange liquid to further improve heat exchange efficiency. The second heat exchanger 44 is provided with the second thermally conductive adhesive 45 on one or both sides. The second thermally conductive adhesive 45 is applied to one side of the second heat exchanger 44, meaning it is applied between the second heat exchanger 44 and the inner wall of the electronic control cavity 16, or between the second heat exchanger 44 and the drive circuit board 35 / power circuit board 36. The second thermally conductive adhesive 45 is applied to both sides of the second heat exchanger 44, meaning it is applied between the second heat exchanger 44 and the inner wall of the electronic control cavity 16, and also between the second heat exchanger 44 and the drive circuit board 35 / power circuit board 36. The second thermally conductive adhesive 45 can improve the heat exchange efficiency between the drive circuit board 35 / power circuit board 36 and the second heat exchanger 44.

[0107] In this embodiment, the second thermally conductive adhesive 45 can be set as a variety of thermally conductive adhesives such as thermally conductive silicone grease, silicone thermally conductive adhesive, epoxy resin AB glue, acrylic thermally conductive adhesive, and polyurethane thermally conductive adhesive, and can also be set as a thermally conductive adhesive film to facilitate its fixed installation on the third heat exchanger.

[0108] Figure 14 and Figure 15 Another propulsion device 100 is shown, which differs from the aforementioned propulsion device 100 in that the electronic control component 18 and the motor 19 of the propulsion device 100 are respectively housed in two isolated cavities.

[0109] In this embodiment, see [reference] Figure 16 The guide tube 13 is also provided with a receiving cavity 90, which is isolated from the electrical control cavity 16 and connected to the motor cavity 17. The receiving cavity 90 is used to receive the three-phase line 53 of the motor 19.

[0110] The receiving cavity 90 is isolated from the electronic control cavity 16, while the receiving cavity 90 is connected to the motor cavity 17, thereby isolating the motor cavity 17 from the electronic control cavity 16, so that the operation of the motor 19 and the electronic control component 18 does not interfere with each other. The three-phase wires 53 of the motor 19 can extend through the receiving cavity 90 to the outside of the guide tube 13 and connect to the electronic control component 18, so that the electronic control component 18 controls the operation of the motor 19 and allows the battery 85 (see...) to... Figure 14 Power is supplied to the motor 19 through the electronic control component 18 and the three-phase line 53 so that the motor 19 outputs propulsion torque to the propeller 20.

[0111] In this embodiment, see Figure 16 The underwater portion 12 also includes an isolation section 99 and a partition section 101. The isolation section 99 is connected to the partition section 101 and separates the electronic control cavity 16 from the motor cavity 17. The partition section 101 is located inside the guide tube 13 and divides the guide tube 13 into the electronic control cavity 16 and the receiving cavity 90. The partition section 101 extends to the opening 76 of the inner tube 15. The partition section 101, the isolation section 99, and one side inner wall of the guide tube 13 together define the electronic control cavity 16. The partition section 101 and the other side inner wall of the guide tube 13 together define the receiving cavity 90. The isolation section 99 and the inner wall of the power housing 14 together define the motor cavity 17. In other embodiments, a peripheral wall may be protruded on the inner surface of the guide tube 13, and a closed end wall may be provided on the side of the peripheral wall away from the inner surface of the guide tube 13. Thus, the peripheral wall, the end wall and the inner wall of the guide tube 13 together form a closed electronic control cavity 16, and the other areas of the guide tube 13 are formed as a receiving cavity 90 and a motor cavity 17. Therefore, there are various ways to isolate the electronic control cavity 16 from the receiving cavity 90, which can be determined according to actual needs.

[0112] In this embodiment, see [reference] Figure 16 The motor housing 17 contains cooling lubricating oil 59, which is used to lubricate and cool the motor 19. The cooling lubricating oil 59 reduces rotational friction on the rotor of the motor 19 and also reduces rotational friction on the transmission structure between the motor 19 and the propeller 20. Simultaneously, it exchanges heat with the moving motor 19 and transmission structure to absorb heat from them. The cooling lubricating oil 59 then exchanges heat with the water through the sidewall of the underwater section 12, transferring the absorbed heat to the water. Therefore, the cooling lubricating oil 59 improves the heat dissipation efficiency of the motor 19 and transmission structure.

[0113] Furthermore, since the motor cavity 17 is isolated from the electronic control cavity 16, the cooling lubricating oil 59 will not enter the electronic control cavity 16 through the motor cavity 17 or the receiving cavity 90, thus ensuring that the operation of the electronic control component 18 is not affected by the cooling lubricating oil 59 and guaranteeing the stable operation of the electronic control component 18. The electronic control component 18 can exchange heat with the water through the outer shell of the underwater part 12, which also ensures the reliability of the heat dissipation of the electronic control component 18.

[0114] In this embodiment, see [reference] Figure 16 and Figure 17 The top of the guide pipe 13 is provided with an outlet 91, which connects to the receiving cavity 90. The propulsion device 100 also includes a wiring seal 92 and a terminal 93. The wiring seal 92 seals the outlet 91, and the terminal 93 is sealed and fitted inside the wiring seal 92 and connected to the three-phase wire 53. The outlet 91 is the open opening of the receiving cavity 90. By sealing the outlet 91 with the wiring seal 92, the cooling lubricating oil 59 in the motor cavity 17 cannot leak from the outlet 91 of the receiving cavity 90 to the water surface part 11 or enter the electrical control cavity 16, thereby further ensuring the operational safety of the electrical control component 18. The wiring seal 92 is equipped with a terminal 93, which facilitates the connection of the three-phase line 53 to the terminal 93 and then to the electrical control component 18. Compared with the three-phase line 53 being sealed and installed in the wiring seal 92, the sealing fit between the terminal 93 and the wiring seal 92 is simpler and the sealing performance is better.

[0115] In this embodiment, see Figure 17 The wiring seal 92 is fitted into the receiving cavity 90. The outer peripheral surface of the wiring seal 92 is provided with a sealing groove 102, which is used to receive the sealing ring to seal against the inner wall of the underwater part 12. In this embodiment, the surface of the receiving cavity 90 is provided with a step, which is used to support the wiring seal 92 to prevent the wiring seal 92 from falling into the receiving cavity 90.

[0116] In this embodiment, see Figure 16 The containment cavity 90 and the electronic control cavity 16 are spaced apart along the propulsion direction of the propulsion device 100, thereby reducing the size of the underwater part 12 along its cross-sectional width direction, which is beneficial to reducing the water flow resistance encountered by the propulsion device 100 during operation.

[0117] In this embodiment, see Figure 16 The propulsion device 100 also includes a copper busbar assembly 50, which is disposed in the electrical control cavity 16. One end of the copper busbar assembly 50 is connected to the electrical control assembly 18, and the other end of the copper busbar assembly 50 extends out of the electrical control cavity 16 and is electrically connected to the terminal 93.

[0118] In this embodiment, see Figure 16The copper busbar assembly 50 includes a vertical section 94 and a horizontal section 95. The vertical section 94 fits inside the electrical control cavity 16, and the horizontal section 95 connects to the vertical section 94 and is electrically connected to the terminal block 93. The vertical section 94 can be installed between the electrical control assembly 18 and the partition 101 to make full use of the space in the electrical control cavity 16. The horizontal section 95 is located at the opening of the electrical control cavity 16 to facilitate electrical connection with the terminal block 93. The vertical section 94 and the horizontal section 95 generally form a U-shape to facilitate the copper busbar assembly 50 being mounted on the partition 101 and electrically connected to the terminal block 93.

[0119] In this embodiment, see Figure 16 and Figure 17 The propulsion device 100 also includes a copper busbar locking member 96, which locks the copper busbar assembly 50 to the terminal block 93. By locking the copper busbar assembly 50 with the copper busbar locking member 96, the copper busbar assembly 50 can be relatively fixed to the underwater part 12, thus eliminating the need to fix the vertical section 94 inside the electrical control cavity 16, reducing the assembly difficulty of the propulsion device 100. Of course, to further improve the robustness of the copper busbar assembly 50, the vertical section 94 can also be fixed simultaneously when fixing the electrical control assembly 18. In this embodiment, the copper busbar locking member 96 is a screw, which is threaded to the terminal block 93 to lock the horizontal section 95 to the top surface of the terminal block 93, achieving a fixed connection between the horizontal section 95 and the terminal block 93. In other embodiments, the copper busbar locking member 96 can also be pinned to the terminal block 93.

[0120] In this embodiment, see [reference] Figure 16 The power housing 14 also includes a cooling housing 97 that covers the main housing 47 away from the end cover 48. A cooling cavity 98 is formed between the cooling housing 97 and the main housing 47. The cooling cavity 98 is in communication with the motor cavity 17. The propulsion device 100 also includes a drive shaft connected to the motor 19. The drive shaft is disposed in the cooling cavity 98, and cooling lubricating oil 59 is disposed in the cooling cavity 98. The cooling lubricating oil 59 can cool the motor 19 and the drive shaft simultaneously.

[0121] In other embodiments, depending on the size of the cooling cavity 98, the drive shaft can be replaced with the drive shaft assembly, reduction mechanism, or reducer 58 in the aforementioned embodiments to adjust the torque output from the motor 19 to the propeller 20 and achieve a speed change effect; or an additional mechanical pump 60 as in the aforementioned embodiments can be added to accelerate the circulation of the cooling lubricating oil 59, thereby further improving cooling efficiency and reducing the consumption of the cooling lubricating oil 59, which will not be elaborated here.

[0122] In the above embodiments, the propulsion device 100 is an outboard motor 100a. Of course, the embodiments of this application are not limited to the above embodiments. For example, see... Figure 14The propulsion device 100 can also be a podded propulsion unit 100b. The podded propulsion unit 100b is largely the same as the outboard motor 100a in the above embodiments, except that the above-water portion 11 of the podded propulsion unit 100b is fixed inside the water carrier 201, and the bottom of the above-water portion 11 is connected to the underwater portion 12 outside the bottom 202 of the water carrier 201. The bottom 202 is used to support the surface of the water body, where the water body surface refers to the surface of water bodies such as rivers, lakes, and seas. That is, when the water-mobile device 200 travels in the water, a portion of the outer surface of the bottom 202 directly contacts the water body. The flange 63 of the guide pipe 13 is fastened to the bottom of the above-water portion 11 and is adjacent to the bottom 202 of the water carrier 201. The central controller 78 is located inside the water carrier 201, separate from the above-water portion 11, and connected to the electronic control component 18 via a conductive cable; in other embodiments, the central controller 78 can also be fixed to the above-water portion 11. In this embodiment, the steering controller 88 is connected to the central controller 78 via a control cable 89.

[0123] The above embodiments are only used to illustrate the technical solutions of this application and are not intended to limit it. Although this application has been described in detail with reference to the above preferred embodiments, those skilled in the art should understand that modifications or equivalent substitutions to the technical solutions of this application should not depart from the spirit and scope of the technical solutions of this application.

Claims

1. A propulsion device, characterized in that, include: The frame includes an above-water section and an underwater section. The underwater section is provided with a guide pipe and a power housing. One end of the guide pipe is provided with an inner pipe that is inserted into the above-water section. The power housing is integrally disposed at the end of the guide pipe away from the inner pipe. An electrical control cavity communicating with the inside of the inner pipe is provided inside the guide pipe. A motor cavity is provided inside the power housing. An electronic control component, which is at least partially fitted into the electronic control cavity and receives direct current through a DC conductive element configured in the inner tube; The motor is fixed inside the motor cavity and electrically connected to the electronic control component to receive the drive control signal from the electronic control component; A sealing structure is provided between the outer peripheral sidewall of the inner tube and the above-water portion; The guide tube has a racetrack-shaped cross-section. The electronic control assembly includes a control circuit board, a drive circuit board, and a power circuit board that are connected in sequence. The control circuit board covers the opening of the inner tube. The drive circuit board and the power circuit board are stacked together in the electronic control cavity, and the stacking direction is configured to be the cross-sectional width direction of the guide tube. The cross-sectional width direction of the guide tube is perpendicular to the propulsion direction of the propulsion device.

2. The propulsion device according to claim 1, characterized in that: The electronic control assembly also includes a cover that presses against the end face of the inner tube, and the control circuit board is securely positioned between the cover and the end face of the inner tube.

3. The propulsion device according to claim 2, characterized in that: The cover is provided with a DC copper busbar interface, and the DC conductive component includes a DC copper busbar that passes through the DC copper busbar interface. The DC copper busbar also passes through the control circuit board and is connected to the power circuit board.

4. The propulsion device according to claim 3, characterized in that: The electronic control assembly also includes a shielding magnetic ring fixed to the cover and surrounding the DC copper busbar.

5. The propulsion device according to claim 2, characterized in that: The propulsion device also includes a central controller fixed to the above-water portion. The central controller is connected to the control circuit board via a control line. The electronic control assembly also includes a control line magnetic ring fixed to the cover, and the control line passes through the control line magnetic ring.

6. The propulsion device according to claim 1, characterized in that: The electronic control assembly further includes a first heat exchanger, which is attached to the inner wall of the drive circuit board and the electronic control cavity.

7. The propulsion device according to claim 6, characterized in that: The first heat exchanger is a metal plate, and a first thermally conductive adhesive is provided on one or both sides of the first heat exchanger. The first thermally conductive adhesive is responsible for the heat transfer from the drive circuit board to the guide tube.

8. The propulsion device according to claim 6, characterized in that: The electronic components on the drive circuit board are disposed on the side facing the power circuit board, and the first heat exchanger is attached to the side of the drive circuit board facing away from the power circuit board.

9. The propulsion device according to claim 1, characterized in that: The electronic control assembly further includes a second heat exchanger, which is attached to the inner wall of the power circuit board and the electronic control cavity.

10. The propulsion device according to claim 9, characterized in that: The second heat exchanger is a metal plate, and a second thermally conductive adhesive is provided on one or both sides of the second heat exchanger. The second thermally conductive adhesive is responsible for the heat transfer from the power circuit board to the guide pipe.

11. The propulsion device according to claim 9, characterized in that: The power circuit board is provided with multiple large capacitors on the side opposite to the drive circuit board, and the second heat exchanger is attached to the multiple large capacitors.

12. A propulsion device, characterized in that, include: The frame includes an above-water section and an underwater section. The underwater section is provided with a guide pipe and a power housing. One end of the guide pipe is provided with an inner pipe that is inserted into the above-water section. The power housing is integrally disposed at the end of the guide pipe away from the inner pipe. An electrical control cavity communicating with the inside of the inner pipe is provided inside the guide pipe. A motor cavity is provided inside the power housing. An electronic control component, which is at least partially fitted into the electronic control cavity and receives direct current through a DC conductive element configured in the inner tube; The motor is fixed inside the motor cavity and electrically connected to the electronic control component to receive the drive control signal from the electronic control component; A sealing structure is provided between the outer peripheral sidewall of the inner tube and the above-water portion; The cross-section of the guide tube is elliptical, and the electronic control assembly includes a control circuit board, a drive circuit board, and a power circuit board that are electrically connected in sequence. The control circuit board, the drive circuit board, and the power circuit board are stacked along the minor axis of the cross-section of the guide tube.

13. The propulsion device according to claim 12, characterized in that: The control circuit board is located adjacent to the inner wall of the electronic control cavity.

14. The propulsion device according to claim 13, characterized in that: The electronic components on the control circuit board face the adjacent inner wall of the electronically controlled cavity.

15. The propulsion device according to claim 13, characterized in that: The electronic control assembly also includes a first heat exchanger disposed between the control circuit board and the inner wall of the electronic control cavity.

16. The propulsion device according to claim 15, characterized in that: The first heat exchanger is a metal plate, and a first thermally conductive adhesive is provided on one or both sides of the first heat exchanger. The first thermally conductive adhesive is responsible for the heat transfer from the control circuit board to the guide pipe.

17. The propulsion device according to claim 13, characterized in that: The drive circuit board is located between the control circuit board and the power circuit board.

18. The propulsion device according to claim 13, characterized in that: The power circuit board is located between the control circuit board and the drive circuit board.

19. The propulsion device according to claim 13, characterized in that: The electronic control assembly further includes a second heat exchanger, which is attached to the inner wall of the electronic control cavity on the side away from the control circuit board, and the drive circuit board or the power circuit board is attached to the second heat exchanger.

20. The propulsion device according to claim 19, characterized in that: The second heat exchanger is a metal plate, and a second thermally conductive adhesive is provided on one or both sides of the second heat exchanger. The second thermally conductive adhesive is responsible for the heat transfer from the drive circuit board or the power circuit board to the guide tube.

21. The propulsion device according to claim 1 or 12, characterized in that: The diameter of the inner tube allows the electronic control assembly to be inserted into the electronic control cavity from the inner tube.

22. The propulsion device according to claim 21, characterized in that: The electronic control component is partially disposed inside the inner tube and partially disposed within the electronic control cavity.

23. The propulsion device according to claim 22, characterized in that: An installation notch is provided on one side of the inner tube, and a first locking part is provided on the other side of the inner tube opposite to the installation notch. The electronic control component is provided with a first fastener that is locked to the first locking part through the installation notch.

24. The propulsion device according to claim 22, characterized in that: A locking hole is provided on one side of the guide tube near the electronic control component and away from the inner tube. A second locking part is provided on the side of the guide tube away from the locking hole. A second fastener is provided at the end of the electronic control component away from the inner tube and locked to the second locking part through the locking hole.

25. The propulsion device according to claim 24, characterized in that: The side wall of the guide tube is provided with a sealing plug that seals against the locking hole.

26. The propulsion device according to claim 1 or 12, characterized in that: The side of the guide tube is provided with an electrical control installation opening and an electrical control cover plate that covers the electrical control installation opening. The electrical control component is housed in the electrical control cavity through the electrical control installation opening. The diameter of the inner tube allows the DC conductive component connected to the electrical control component to be disposed inside the inner tube.

27. The propulsion device according to claim 26, characterized in that: A support boss is provided on the inner side of the electrical control installation opening, and the periphery of the electrical control cover plate overlaps the support boss.

28. The propulsion device according to claim 27, characterized in that: The propulsion device also includes an electrically controlled seal, which is sealed between the periphery of the electrically controlled cover plate and the support boss.

29. The propulsion device according to claim 1 or 12, characterized in that: The power housing includes a main housing integral with the guide pipe and an end cap that covers the main housing; the motor cavity has a power opening at the location where the main housing mates with the end cap, and the end cap seals the power opening.

30. The propulsion device according to claim 29, characterized in that: The propulsion device also includes a copper busbar assembly that electrically connects the electronic control component and the motor, the copper busbar assembly being located in the area of ​​the motor cavity directly opposite the power opening.

31. The propulsion device according to claim 30, characterized in that: The propulsion device also includes a Hall sensor located near the copper busbar assembly for sensing the magnetic field of the copper busbar assembly.

32. The propulsion device according to claim 31, characterized in that: The copper busbar assembly includes three-phase copper busbar connectors, which are staggered sequentially in the direction directly opposite to the opening.

33. The propulsion device according to claim 32, characterized in that: The propulsion device also includes a copper busbar bracket fixed in the motor cavity, the three-phase copper busbar connector is fixed on the copper busbar bracket, and the three-phase lines of the motor are fixedly connected to the three-phase copper busbar connector through the copper busbar bracket.

34. The propulsion device according to claim 29, characterized in that: The propulsion device also includes an end cap sealing ring, which is sealed at the connection between the main shell and the end cap.

35. The propulsion device according to claim 29, characterized in that: The power housing also includes a reducer housing that covers the main housing away from the end cover, and a reduction cavity is formed between the reducer housing and the main housing. The propulsion device also includes a reducer connected to the motor, and the reducer is disposed in the reduction cavity.

36. The propulsion device according to claim 35, characterized in that: The reduction chamber is isolated from the motor chamber, and cooling lubricating oil is provided in the reduction chamber to lubricate and cool the reducer.

37. The propulsion device according to claim 36, characterized in that: The propulsion device also includes a mechanical pump disposed in the deceleration chamber, the mechanical pump receiving the rotational torque of the motor and pumping the cooling lubricating oil in the deceleration chamber from a lower position to a higher position.

38. The propulsion device according to claim 1 or 12, characterized in that: The propulsion device also includes a lifting clamp connected to the above-water portion and for fixing to the water carrier to drive the frame to lift relative to the water carrier.

39. The propulsion device according to claim 38, characterized in that: The propulsion device also includes a steering assembly disposed on the above-water portion and connected to the lifting clamp to provide torque for steering the frame relative to the water carrier.

40. The propulsion device according to claim 1 or 12, characterized in that: A flange is provided on the periphery of the end of the guide pipe adjacent to the inner pipe. Multiple locking elements are provided on the flange along the circumference of the guide pipe. The end face of the above-water portion adjacent to the underwater portion covers the flange and is locked with the multiple locking elements.

41. The propulsion device according to claim 1 or 12, characterized in that: The propulsion device also includes a propeller, which is connected to the motor via a torque transmission component and is located outside the power housing.

42. The propulsion device according to claim 1 or 12, characterized in that: The electrical control cavity is isolated from the motor cavity. The guide tube is also provided with a receiving cavity, which is isolated from the electrical control cavity and connected to the motor cavity. The receiving cavity is used to receive the three-phase wires of the motor.

43. The propulsion device according to claim 42, characterized in that: The top of the guide tube is provided with an outlet, which is connected to the receiving cavity. The propulsion device also includes a wiring seal and a terminal block. The wiring seal is sealed in the outlet, and the terminal block is sealed and fitted inside the wiring seal and connected to the three-phase line.

44. The propulsion device according to claim 42, characterized in that: The receiving cavity and the electronically controlled cavity are spaced apart along the propulsion direction of the propulsion device.

45. The propulsion device according to claim 43, characterized in that: The propulsion device also includes a copper busbar assembly, which is disposed in the electrical control cavity. One end of the copper busbar assembly is connected to the electrical control assembly, and the other end of the copper busbar assembly extends out of the electrical control cavity and is electrically connected to the terminal block.

46. ​​The propulsion device according to claim 45, characterized in that: The copper busbar assembly includes a vertical section and a horizontal section. The vertical section fits into the electrical control cavity, and the horizontal section is connected to the vertical section and electrically connected to the terminal block.

47. The propulsion device according to claim 45, characterized in that: The propulsion device also includes a copper busbar locking component, which locks the copper busbar assembly to the terminal block.

48. The propulsion device according to claim 42, characterized in that: The motor cavity is provided with cooling lubricating oil, which is used to lubricate and cool the motor.

49. The propulsion device according to claim 48, characterized in that: The power housing includes a main housing integral with the guide pipe and a cooling housing covering the main housing. A cooling cavity is formed between the cooling housing and the main housing. The cooling cavity is in communication with the motor cavity. The propulsion device also includes a drive shaft connected to the motor. The drive shaft is disposed in the cooling cavity. The cooling lubricating oil is disposed in the cooling cavity.

50. The propulsion device according to claim 42, characterized in that: The underwater portion also includes an isolation section and a partition section. The isolation section is connected to the partition section. The isolation section separates the electronic control cavity and the motor cavity. The partition section is located inside the guide tube and separates the motor cavity and the receiving cavity inside the guide tube. The partition section extends to the opening of the inner tube.

51. A water-based mobile device, characterized in that, include: Waterborne carriers; The propulsion device according to any one of claims 1 to 50, wherein the frame is connected to the water carrier.

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