Power units, propulsion units and mobile equipment in waters

Abstract

The embodiments of the present application provide a power device, a propeller and a movable device in water area. The power device includes a motor, a rotating component, a transmission and a heat dissipation component. The rotating component is arranged at one end of the motor, and the transmission is arranged at the end of the motor away from the rotating component, which is used to change the rotational torque output by the motor. The heat dissipation component is arranged at the motor and the transmission, and is thermally coupled with the transmission and the motor. The heat dissipation component has multiple heat dissipation slits. The rotating component can push the heat-conducting medium to flow through the multiple heat dissipation slits, and take away the heat of the heat dissipation component through the heat-conducting medium. Through the cooperation of the rotating component and the heat dissipation component, the rotating component pushes the heat-conducting medium to flow through the multiple heat dissipation slits of the heat dissipation component for heat exchange, and takes away the heat of the heat dissipation component through the heat-conducting medium, thereby improving the heat dissipation efficiency.

Description

Technical Field

[0001] The present application relates to the field of marine equipment, and in particular to a power unit, a propeller and a movable device in water areas. Background Art

[0002] The power device generates a large amount of heat when in use. To ensure the continuous operation of the power device, the power device needs to be cooled. In existing power devices, air cooling and water cooling are generally used, but the heat dissipation efficiency is not high. Summary of the invention

[0003] In view of this, it is necessary to provide a power device, a propeller and a movable device in water areas that can improve the heat dissipation efficiency.

[0004] An embodiment of the present application provides a power device, including a motor, a rotating component, a transmission and a heat dissipation component. The rotating component is configured at one end of the motor, and the transmission is configured at the end of the motor away from the rotating component, for changing the speed of the rotational torque output by the motor. The heat dissipation component is configured at the motor and the transmission, and is thermally coupled with the transmission and the motor. The heat dissipation component has a plurality of heat dissipation slits. The rotating component can push a heat-conducting medium to flow through the plurality of heat dissipation slits, and take away the heat of the heat dissipation component through the heat-conducting medium. Through the cooperation of the rotating component and the heat dissipation component, the rotating component pushes the heat-conducting medium to flow through the plurality of heat dissipation slits of the heat dissipation component for heat exchange, and takes away the heat of the heat dissipation component through the heat-conducting medium, thereby improving the heat dissipation efficiency.

[0005] An embodiment of the present application also provides a propeller, including a propeller and a propeller, wherein the propeller is connected to the transmission shaft to receive the rotational torque output by the transmission.

[0006] An embodiment of the present application further provides a movable device in water areas, comprising a movable body and the propeller in any of the above embodiments, wherein the power device is configured on the movable body, and the propeller can rotate to propel the movable body to move.

[0007] The above-mentioned power device, propeller and movable device in water area cooperate with a rotating component and a heat dissipation component. The rotating component pushes the heat-conducting medium to flow through multiple heat dissipation slits of the heat dissipation component for heat exchange, and takes away the heat of the heat dissipation component through the heat-conducting medium, thereby improving the heat dissipation efficiency. BRIEF DESCRIPTION OF THE DRAWINGS

[0008] Figure 1 A schematic diagram of the structure of a power device in some embodiments is shown.

[0009] Figure 2 A schematic cross-sectional view of a power device in some embodiments is shown.

[0010] Figure 3 A schematic cross-sectional view of the power device at another angle in some embodiments is shown.

[0011] Figure 4 A schematic structural diagram of the first shell in some embodiments is shown.

[0012] Figure 5 Schematic cross-sectional views of power devices in other embodiments are shown.

[0013] Figure 6 An exploded schematic diagram of a portion of a power unit in some embodiments is shown.

[0014] Figure 7 A schematic cross-sectional view of the power device at another angle in some embodiments is shown.

[0015] Figure 8 A schematic cross-sectional view of the power device at another angle in some embodiments is shown.

[0016] Fig. 9 A partial cross-sectional schematic diagram of a power device in some embodiments along a top view angle is shown.

[0017] Fig.10 A schematic diagram of the structure of a transmission and an internal circulation heat dissipation assembly in some embodiments is shown.

[0018] Fig.11 A schematic diagram of the structure of a transmission and a heat pipe in some embodiments is shown.

[0019] Fig.12 A schematic diagram of the structure of a heat pipe, a heat pipe bracket and a second heat dissipation fin in some embodiments is shown.

[0020] Fig.13 A schematic structural diagram of the second housing in some embodiments is shown.

[0021] Fig.14 An exploded schematic diagram of the second housing and the inner circulation drive member in some embodiments is shown.

[0022] Fig.15 The schematic diagrams of the structures of the power devices in other embodiments are shown.

[0023] Fig.16 Schematic diagrams of the exploded structure of the power device in other embodiments are shown.

[0024] Fig.17 Schematic cross-sectional views of power devices in other embodiments are shown.

[0025] Fig.18 A schematic diagram of the structure of a propeller and a movable device in water area in some embodiments is shown.

[0026] Description of main component symbols:

[0027] Power Plant 100

[0028] Motor 10

[0029] Stator 11

[0030] Rotor 12

[0031] Rotating shaft 13

[0032] First housing 14

[0033] The first arc surface 141

[0034] First plane 142

[0035] The first protruding portion 143

[0036] The second protruding portion 144

[0037] first recess 14a

[0038] Rotating assembly 20

[0039] Fan 21

[0040] Second housing 22

[0041] Fan drive 23

[0042] Transmission 30

[0043] First housing 30a

[0044] Second housing 30b

[0045] Liquid outlet 30c

[0046] Liquid inlet 30d

[0047] First cavity 31

[0048] First chamber 31a

[0049] Second chamber 31b

[0050] The third heat sink 301

[0051] Fourth heat sink 302

[0052] The third return channel 31c

[0053] The first partition 311

[0054] First chamber 311a

[0055] First return channel 311b

[0056] Second partition 312

[0057] Second chamber 312a

[0058] Second return channel 312b

[0059] First connection portion 313

[0060] First groove 313a

[0061] First through hole 3131

[0062] Gear set 32

[0063] Power input shaft 33

[0064] First sealing member 33a

[0065] First bearing 331

[0066] Second bearing 332

[0067] Power output shaft 34

[0068] Second sealing member 34a

[0069] The third bearing 341

[0070] Fourth bearing 342

[0071] Housing 35

[0072] Fifth heat sink 351

[0073] Shell body 352

[0074] Shell cover 353

[0075] Heat dissipation component 40

[0076] Heat dissipation slit 40a

[0077] First heat sink 41

[0078] Bracket 42

[0079] Bracket body 42a

[0080] Second heat sink 421

[0081] First through hole 422

[0082] Air deflector 43

[0083] First guide plate 431

[0084] Second guide plate 432

[0085] First plate 4321

[0086] Second plate 4322

[0087] The third plate 4323

[0088] Internal circulation heat dissipation component 44

[0089] Internal circulation pipe 44a

[0090] Input pipeline 441

[0091] Output pipeline 442

[0092] Intermediate pipe 443

[0093] First heat dissipation fin 44b

[0094] First pipe support 44c

[0095] Second pipe support 44d

[0096] Internal circulation drive 44e

[0097] Heat pipe 45

[0098] Second heat dissipation fin 46

[0099] Heat pipe bracket 47

[0100] Lamination portion 47a

[0101] Extension 47b

[0102] Bezel 471

[0103] The third heat sink 472

[0104] Second arc surface 473

[0105] Drive 50

[0106] Cover 51

[0107] Extension 511

[0108] Driving body 52

[0109] The second receiving chamber 53

[0110] Electrical connector 54

[0111] First suspension bracket 60

[0112] First shock mount 61

[0113] Second suspension bracket 70

[0114] Second shock-absorbing suspension 71

[0115] Protective cover 80

[0116] The first receiving chamber 81

[0117] Top plate 82

[0118] First side plate 83

[0119] Second side plate 84

[0120] Cooling holes 85

[0121] Thruster 200

[0122] Propeller 201

[0123] Tail shaft 202

[0124] Water area movable equipment 300

[0125] Movable body 300a

[0126] The following specific embodiments will further illustrate the present application in conjunction with the above-mentioned drawings. DETAILED DESCRIPTION

[0127] The technical solutions in the embodiments of the present application will be described below in conjunction with the drawings in the embodiments of the present application. Obviously, the described embodiments are only part of the embodiments of the present application, rather than all of the embodiments.

[0128] When a component is considered to be “provided on” another component, it can be directly provided on the other component or there may be a component in between. When a component is considered to be “connected to” another component, it can be directly connected to the other component or there may be a component in between.

[0129] It can be understood that the term "perpendicular" is used to describe an ideal state between two components. In actual production or use, there may be a state that is approximately perpendicular between the two components. For example, in combination with numerical descriptions, perpendicularity can refer to the angle between two straight lines being between 90°±10°, perpendicularity can also refer to the dihedral angle between two planes being between 90°±10°, and perpendicularity can also refer to the angle between a straight line and a plane being between 90°±10°. The two components described as "perpendicular" may not be absolute straight lines or planes, but may be roughly straight lines or planes. From a macroscopic perspective, a component can be considered a "straight line" or a "plane" if the overall extension direction is a straight line or a plane.

[0130] Unless otherwise defined, when the term "plurality" is used to describe the number of components, it specifically means that the components are two or more.

[0131] Unless otherwise defined, all technical and scientific terms used herein have the same meaning as those commonly understood by those skilled in the art to which this application belongs. The terms used herein in the specification of this application are only for the purpose of describing specific embodiments and are not intended to limit this application. The term "or / and" used herein includes any and all combinations of one or more related listed items.

[0132] Some embodiments of the present application are described in detail below in conjunction with the accompanying drawings. In the absence of conflict, the following embodiments and features in the embodiments can be combined with each other.

[0133] See also Figure 1 , Figure 2 and Figure 3 An embodiment of the present application provides a power device 100, including a motor 10, a rotating assembly 20, a transmission 30 and a heat dissipation assembly 40. The rotating assembly 20 is connected to one end of the motor 10, and the transmission 30 is connected to the end of the motor 10 away from the rotating assembly 20, and is used to change the speed of the rotational torque output by the motor 10. The heat dissipation assembly 40 is connected to the motor 10 and the transmission 30, and is thermally coupled with the motor 10 and the transmission 30, and the heat of the motor 10 and the transmission 30 can be transferred to the heat dissipation assembly 40. The heat dissipation assembly 40 is provided with a plurality of heat dissipation slits 40a, and the rotating assembly 20 can promote the heat conduction medium to flow through the heat dissipation slits 40a, and take away the heat of the heat dissipation assembly 40 through the heat conduction medium, so as to dissipate the heat of the motor 10 and the transmission 30 and improve the heat dissipation efficiency. Optionally, the heat conduction medium includes a refrigerant.

[0134] See also Figure 2 and Figure 4 In one embodiment, the motor 10 includes a stator 11, a rotor 12 and a rotating shaft 13. The stator 11 is sleeved on the outer periphery of the rotor 12. The rotating shaft 13 is fixed in the rotor 12 and connected to the transmission 30. In one embodiment, the motor 10 also includes a first housing 14. The stator 11 and the rotor 12 are both disposed in the first housing 14. Part of the rotating shaft 13 is disposed in the first housing 14. Optionally, one end of the rotating shaft 13 extends out of the first housing 14 and is connected to the transmission 30, and the transmission 30 is driven to move by the rotating shaft 13. Figure 5 As shown, optionally, one end of the rotating shaft 13 extends out of the first housing 14 and is connected to the transmission 30, and the other end extends out of the first housing 14 and is connected to the rotating assembly 20, and the rotating shaft 13 drives the transmission 30 and the rotating assembly 20 to move at the same time, thereby reducing the use of components and the space occupied, and improving space utilization. Of course, in other embodiments, the rotating shaft 13 can also be located in the first housing 14, and the rotating shaft 13 is connected to the transmission 30 via a coupling and a transmission shaft, and the rotating shaft 13 can also be connected to the rotating assembly 20 via a coupling and a transmission shaft.

[0135] In one embodiment, the first shell 14 is provided with a first recess 14a, which is extended along the axial direction of the rotating shaft 13. Part of the heat dissipation component 40 is arranged in the first recess 14a, which reduces the space occupied by the heat dissipation component 40 and further improves space utilization.

[0136] In one embodiment, the heat dissipation assembly 40 includes a plurality of first heat dissipation fins 41, which are arranged at intervals on the outer periphery of the motor 10, and the plurality of first heat dissipation fins 41 are thermally coupled with the motor 10, and a partial heat dissipation slit 40a is formed between adjacent first heat dissipation fins 41, and the heat-conducting medium flows through the heat dissipation slit 40a between adjacent first heat dissipation fins 41 to take away the heat from the first heat dissipation fins 41. Optionally, the plurality of first heat dissipation fins 41 are arranged at intervals on the outer periphery of the first housing 14, and are thermally coupled with the first housing 14. The plurality of first heat dissipation fins 41 grow from the surface of the first housing 14.

[0137] It is understandable that the heat dissipation component can be thermally coupled to the transmission and the motor in such a way that the heat dissipation component is in direct contact with the transmission and the motor, or in such a way that the heat dissipation component is in contact with the transmission and the motor via a heat-conducting medium.

[0138] The motor 10, the transmission 30 and the heat dissipation component 40 are all located on the flow path of the heat-conducting medium pushed by the rotating component 20. When the power device 100 is in use, the heat of the motor 10 is transferred to the part of the heat dissipation component 40 connected to the motor 10, and the heat of the transmission 30 is transferred to the part of the heat dissipation component 40 connected to the transmission 30. The heat-conducting medium pushed by the rotating component 20 first passes through the position where the motor 10 is located, and the heat-conducting medium passes through the heat dissipation slit 40a of the part of the heat dissipation component 40 connected to the motor 10, and takes away the heat of the part of the heat dissipation component 40 connected to the motor 10 through the heat-conducting medium. Then the heat-conducting medium passes through the position where the transmission 30 is located, and the heat-conducting medium passes through the heat dissipation slit 40a of the part of the heat dissipation component 40 connected to the transmission 30, and takes away the heat of the part of the heat dissipation component 40 connected to the transmission 30 through the heat-conducting medium, thereby achieving heat dissipation of the motor 10 and the transmission 30, so as to improve the heat dissipation efficiency of the motor 10 and the transmission 30.

[0139] See also Figure 3 and Figure 4In one embodiment, the power device 100 further includes a driver 50, and the heat dissipation assembly 40 further includes a bracket 42, the bracket 42 is fixed to the motor 10, the driver 50 is fixed to the side of the bracket 42 away from the motor 10, and the driver 50 is electrically connected to the motor 10 to control the movement of the motor 10. There is a gap between the bracket 42 and the motor 10, and the heat-conducting medium pushed by the rotating assembly 20 can also pass through the gap between the bracket 42 and the motor 10 to take away part of the heat of the motor 10 and the driver 50. Optionally, the first shell 14 includes a first arcuate surface 141 and a first plane 142 connected to the first arcuate surface 141, a plurality of first heat sinks 41 are arranged at intervals on the first arcuate surface 141, the bracket 42 is fixedly connected to the first plane 142, the first arcuate surface 141 can increase the number of first heat sinks 41, and the bracket 42 is arranged on the first plane 142, which can increase the stability of the bracket 42 fixed to the first shell 14.

[0140] In the embodiments of the present application, the driver 50 includes but is not limited to structures such as a circuit board and a controller, and can be integrated with the motor 10 to drive the motor 10 to start or stop, or adjust the speed, rotation direction, etc. of the motor 10. In addition to the controller for controlling the operation of the motor 10, the driver 50 also includes a driving management controller. The driving management controller can be used to control the driving posture of the mobile device in water areas, and can also be used to control the power management system of the mobile device in water areas. It can also be used to control the speed change of the power unit 100 and can be used to interact with other modules on the mobile device in water areas. In the implementation of the present application, it is not limited to the way in which the driver 50 includes the above-mentioned controller. Any electronic control terminal module that can realize the driving and information interaction functions and is integrated into the motor can be an implementation of the present application.

[0141] In one embodiment, a plurality of second heat sinks 421 are provided at intervals on one side of the bracket 42 facing the first housing 14, and a partial heat dissipation slit 40a is formed between adjacent second heat sinks 421. The driver 50 is fixed to the side of the bracket 42 away from the second heat sink 421. The driver 50 is in contact with the bracket 42, and the bracket 42 can absorb the heat of the driver 50. The second heat sink 421 grows from the surface of the bracket 42, and the heat of the bracket 42 can be taken away through the contact between the surface of the second heat sink 421 and the flowing heat-conducting medium. The heat-conducting medium pushed by the rotating assembly 20 flows through the heat dissipation slit 40a between adjacent second heat sinks 421, taking away the heat on the second heat sink 421, and dissipating the heat of the driver 50.

[0142] Optionally, the bracket 42 includes a bracket body 42a, a plurality of second heat sinks 421 are spaced apart on a side of the bracket body 42a opposite to the first shell 14, and a side of the bracket body 42a away from the first shell 14 is configured as a planar structure to facilitate installation of the driver 50.

[0143] See also Figure 1 and Figure 6 In one embodiment, the heat dissipation assembly 40 further includes a shroud 43, which is disposed on the periphery of a portion of the motor 10 and is spliced ​​with the driver 50. Gaps are provided between the shroud 43 and the motor 10, the driver 50, and the bracket 42. The shroud 43 can guide the heat-conducting medium pushed by the rotating assembly 20 to the gap and flow through the gap, so that the heat-conducting medium can quickly absorb and conduct away the heat of the motor 10, the driver 50, and the bracket 42 in the gap, thereby improving the heat dissipation efficiency. In one embodiment, the shroud 43 has an arc-shaped structure, which is used to match with a portion of the first arc-shaped surface 141 of the first shell 14, reduce the gap between the shroud 43 and the first shell 14, and then increase the flow rate of the heat-conducting medium in the gap, further improving the heat dissipation efficiency. The area where the shroud 43 matches the portion of the first arc-shaped surface 141 is away from the driver 50, so as to reduce the overall volume of the power device 100.

[0144] Optionally, the air guide cover 43 includes a first air guide plate 431 and a second air guide plate 432, wherein the first air guide plate 431 surrounds a portion of the outer periphery of the first shell 14, and the second air guide plate 432 is spliced ​​with the first air guide plate 431 and connected to the driver 50. Specifically, the second air guide plate 432 connects both sides of the first air guide plate 431, and the first air guide plate 431 surrounds a portion of the outer periphery of the first shell 14, wherein one end of the second air guide plate 432 away from the first air guide plate 431 is connected to one end of the driver 50, and another end of the second air guide plate 432 away from the first air guide plate 431 is connected to the other end of the driver 50. Optionally, the air guide 43 includes a first air guide plate 431 and a second air guide plate 432, wherein the first air guide plate 431 surrounds a portion of the outer periphery of the first shell 14, and both ends of the first air guide plate 431 are connected to the second air guide plates 432, wherein one end of the second air guide plate 432 away from the first air guide plate 431 is connected to one end of the bracket 42, and another end of the second air guide plate 432 away from the first air guide plate 431 is connected to the other end of the bracket 42. By providing the air guide 43 as a plurality of detachable parts, installation and removal are facilitated.

[0145] Please also read Fig.15 and Fig.16In another embodiment, the air guide cover 43 includes a first air guide plate 431 and two second air guide plates 432, the two second air guide plates 432 are respectively connected to both sides of the bracket 42, the first air guide plate 431 surrounds part of the outer periphery of the first shell 14, and the first air guide plate 431 and the second air guide plate 432 respectively form a gap with the first shell 14, so as to guide the heat transfer medium pushed by the rotating assembly 20 to the gap, thereby facilitating the first heat sink 41 located in the gap to contact the heat transfer medium. Both sides of the first air guide plate 431 are spaced from the second air guide plates 432, so that the first heat sink 41 located between the first air guide plate 431 and the second air guide plate 432 is directly exposed to the external environment and performs heat exchange with the external environment.

[0146] It can be understood that the number of first heat sinks 41 located in the gap formed by the first guide plate 431, the second guide plate 432 and the first shell 14, and the number of first heat sinks 41 located between the first guide plate 431 and the second guide plate 432 can be set in proportion to adapt to different heat dissipation requirements.

[0147] Specifically, the first housing 14 is provided with a first protruding portion 143 and two second protruding portions 144, wherein the first protruding portion 143 is located at a side of the first housing 14 away from the driver 50, and the two second protruding portions 144 are spaced apart on both sides of the first protruding portion 143. The first protruding portion 143 and the two second protruding portions 144 extend along the axial direction of the power input shaft 33 respectively to enhance the structural strength of the first housing 14. The first deflector 431 is located at a side of the first housing 14 away from the driver 50 and is fixedly connected to the first protruding portion 143. The first deflector 431 has an arc structure, which matches the first arc surface 141 of the first housing 14 away from the driver 50. One end of the second deflector 432 is fixedly connected to the bracket 42, and the other end is fixedly connected to the corresponding second protruding portion 144 to enhance the connection strength between the second deflector 432 and the first housing 14. It is understandable that the second air guide plate 432 is also provided with an escape opening for evading other structural components (such as a suspension mechanism) on the second protruding portion 144 , so as to facilitate the integration of the air guide cover 43 into the first shell 14 .

[0148] Optionally, the first guide plate 431 and the first protruding portion 143, and the second guide plate 432 and the corresponding second protruding portion 144 can be fastened by screws, pins, snap-fit ​​structures, or threaded locking structures, and can be quickly disassembled and maintained.

[0149] See also Figure 5In one embodiment, the rotating assembly 20 includes a fan 21 and a second housing 22, the second housing 22 is connected to the motor 10, and the fan 21 is rotatably disposed in the second housing 22. Optionally, the second housing 22 is fixedly connected to the end of the first housing 14 away from the transmission 30, the rotating shaft 13 is connected to the fan 21 through a coupling and a transmission shaft, the fan 21 is protected by the second housing 22, and the rotating shaft 13 drives the fan 21 to rotate through the coupling and the transmission shaft, and the wind of the fan 21 is guided from the second housing 22 to the air deflector 43. Optionally, the second housing 22 is connected to the air deflector 43 by fixing the first deflector plate 431 and the second deflector plate 432 on one side of the second housing 22 close to the air deflector 43.

[0150] In one embodiment, Figure 5 The embodiments are substantially the same, except that Figure 5 Based on the embodiment of the present invention, the fan 21 is disconnected from the rotating shaft 13, and the fan 21 is driven to rotate by the fan driving member 23. For details, please refer to Figure 2 and Figure 3 The rotating assembly 20 includes a fan 21, a second housing 22 and a fan driver 23. The second housing 22 is connected to the motor 10. The fan driver 23 is disposed in the second housing 22 and connected to the fan 21 to drive the fan 21 to rotate. By providing the fan driver 23, the fan 21 can be driven to rotate independently, which facilitates the adjustment of the rotation of the fan 21 and achieves different degrees of heat dissipation. Optionally, the fan driver 23 includes a drive motor, which is electrically connected to the driver 50. The driver 50 controls the rotation of the drive motor, thereby driving the fan 21 to rotate.

[0151] See also Figure 2 , Figure 3 and Figure 7 In one embodiment, the transmission 30 is provided with a first cavity 31 and a gear set 32, and the gear set 32 ​​is provided in the first cavity 31. A coolant is provided in the first cavity 31, and the gear set 32 ​​is thermally coupled with the coolant. The gear set 32 ​​is connected to the motor 10, and the motor 10 drives the gear set 32 ​​to rotate. The coolant at least partially immerses the gear set 32, so that the gear set 32 ​​and the coolant are thermally coupled, lubricates the gear set 32 ​​and absorbs the heat of the transmission 30, and circulates the coolant in and outside the first cavity 31 through the heat dissipation component 40, thereby extracting the heat of the transmission 30 and dissipating the heat of the coolant. Optionally, the coolant includes lubricating oil.

[0152] Optionally, the transmission 30 further includes a power input shaft 33 and a power output shaft 34, the power input shaft 33 and the power output shaft 34 are separately arranged, and the gear set 32 ​​is connected between the power input shaft 33 and the power output shaft 34. The power input shaft 33 is rotatably arranged in the first cavity 31, the power input shaft 33 is axially connected to the rotating shaft 13, the power output shaft 34 is rotatably arranged in the first cavity 31, and one end of the power output shaft 34 extends out of the first cavity 31 to output power. The power input shaft 33 is driven to rotate by the rotating shaft 13, the power input shaft 33 drives the gear set 32 ​​to rotate, and the gear set 32 ​​drives the power output shaft 34 to rotate, and then the power is output through the power output shaft 34. Optionally, the power input shaft 33 is connected to a first bearing 331 and a second bearing 332, the first bearing 331 and the second bearing 332 are fixed to the first cavity 31, and the power output shaft 34 is connected to a third bearing 341 and a fourth bearing 342, and the third bearing 341 and the fourth bearing 342 are fixed in the first cavity 31.

[0153] In one embodiment, a first seal 33a is provided between the power input shaft 33 and the inner wall of the first cavity 31, and the first seal 33a contacts and connects the power input shaft 33 and the inner wall of the first cavity 31, and is used to prevent the coolant from leaking from the power input shaft 33 extending out of the first cavity 31. Optionally, the rotating shaft 13 is sleeved on the outer periphery of the power input shaft 33, and a first seal 33a is provided between the rotating shaft 13 and the inner wall of the first cavity 31. Optionally, the first seal 33a includes an oil seal.

[0154] In one embodiment, a second seal 34a is further provided between the power output shaft 34 and the inner wall of the first cavity 31, and the second seal 34a contacts and connects the power output shaft 34 and the inner wall of the first cavity 31 to prevent the coolant from leaking from the point where the power output shaft 34 extends out of the first cavity 31. Optionally, the second seal 34a includes an oil seal.

[0155] In one embodiment, the first cavity 31 includes a first chamber 31a and a second chamber 31b, and the first chamber 31a is connected to the second chamber 31b. When the motor 10 drives the gear set 32 ​​to rotate, the gear set 32 ​​can stir part of the coolant in the first chamber 31a, so that part of the coolant enters the second chamber 31b, thereby reducing the capacity of the coolant in operation, reducing the oil stirring loss, and reducing the heat generation power. The coolant in the second chamber 31b can flow back to the first chamber 31a to lubricate the gear set 32 ​​and reduce the heat generation power.

[0156] In one embodiment, a first partition plate 311 and a second partition plate 312 are provided in the first cavity 31, and the first partition plate 311 and the inner wall of the first cavity 31 are enclosed to form a first cavity 311a, and a first reflux channel 311b is provided between the first cavity 311a and the first chamber 31a. Part of the cooling liquid in the first chamber 31a stirred by the gear set 32 ​​enters the first cavity 311a and flows back to the first cavity 31a from the first reflux channel 311b. The second partition plate 312 and the inner wall of the first cavity 31 are enclosed to form a second cavity 312a, and a second reflux channel 312b is provided between the second cavity 312a and the first cavity 31a. Part of the cooling liquid in the first cavity 31a stirred by the gear set 32 ​​enters the second cavity 312a and flows back to the first cavity 31a from the second reflux channel 312b. The first cavity 311a and the second cavity 312a together form the second cavity 31b.

[0157] See also Figure 7 , Figure 8 and Fig. 9 In one embodiment, a third reflux channel 31c is further provided in the first cavity 31, and the third reflux channel 31c connects the second cavity 31b and the first cavity 31a, so that part of the coolant in the second cavity 31b can flow back to the first cavity 31a through the third reflux channel 31c. Optionally, the first cavity 311a and the second cavity 312a are both connected by the third reflux channel 31c.

[0158] Optionally, the transmission 30 includes a first housing 30a and a second housing 30b, the second housing 30b is connected to the first housing 14, and the first housing 30a and the second housing 30b are connected along the axial direction of the power input shaft 33 to form a first chamber 31a and a second chamber 31b. The power output shaft 34 partially extends out of the first housing 30a to output power, and the power input shaft 33 partially extends out of the second housing 30b to connect to the rotating shaft 13. The second chamber 31b is partially provided in the first housing 30a, and the second housing 30b is provided with a third reflux channel 31c, and part of the coolant in the second chamber 31b can flow back to the first chamber 31a through the third reflux channel 31c. Optionally, one end of the third reflow channel 31c is connected to the second chamber 31b, and the other end extends between the second bearing 332 and the first seal 33a and is connected to the first chamber 31a. Part of the coolant in the second chamber 31b can flow back to between the second bearing 332 and the first seal 33a through the third reflow channel 31c to lubricate the second bearing 332, the first seal 33a and the connection between the rotating shaft 13 and the power input shaft 33, thereby solving the problem that the components at high positions of the transmission 30 are difficult to lubricate.

[0159] In one embodiment, a first connection portion 313 is further provided in the first cavity 31, and the first connection portion 313 connects the first partition 311 and the second partition 312. The first partition 311, the second partition 312 and the first connection portion 313 are enclosed with the inner wall of the first cavity 31 to form the second cavity 31b. The first connection portion 313 is provided with a first groove 313a for accommodating part of the cooling liquid stirred by the gear set 32, and the bottom surface of the first groove 313a is provided with a first through hole 3131, and the first through hole 3131 is connected to the first cavity 31a, so that the cooling liquid in the first groove 313a flows back to the first cavity 31a through the first through hole 3131. By setting the first groove 313a, the capacity of the second chamber 31b can be increased, so that more coolant can enter the second chamber 31b, and the first groove 313a is located above the first bearing 331. The coolant returning from the first groove 313a can lubricate the first bearing 331, thereby solving the problem that the components of the transmission 30 at a high position are difficult to lubricate.

[0160] When the gear set 32 ​​rotates, part of the coolant enters the first cavity 311a, the second cavity 312a and the first groove 313a from the first chamber 31a, the coolant in the first cavity 311a flows back to the first chamber 31a from the first return channel 311b and the third return channel 31c, the coolant in the second cavity 312a flows back to the first chamber 31a from the second return channel 312b and the third return channel 31c, and the coolant in the first groove 313a flows back to the first chamber 31a from the first through hole 3131. As the gear set 32 ​​continues to rotate, while part of the coolant flows back, part of the coolant re-enters the first cavity 311a, the second cavity 312a and the first groove 313a from the first chamber 31a, so the oil stirring loss will not increase.

[0161] See also Figure 1 and Figure 2 In one embodiment, the second housing 30b is provided with a plurality of third heat sinks 301, which are arranged at intervals on a side of the second housing 30b away from the first housing 30a, and the third heat sinks 301 extend along the radial direction of some gears of the gear set 32. Partial heat dissipation slits 40a are formed between adjacent third heat sinks 301, and the wind of the fan 21 is guided from the second housing 22 to the air guide cover 43, and passes through the heat dissipation slits 40a between adjacent third heat sinks 301, taking away the heat on the third heat sinks 301, thereby improving the heat dissipation efficiency.

[0162] In one embodiment, the first housing 30a is provided with a plurality of fourth heat sinks 302, which are spaced apart on a side of the first housing 30a away from the second housing 30b, and the fourth heat sinks 302 extend along the radial direction of some gears of the gear set 32. The fourth heat sinks 302 are heat-exchanged with the external environment to remove the heat on the fourth heat sinks 302, thereby further improving the heat dissipation efficiency.

[0163] See also Figure 6 and Fig.10 In one embodiment, the heat dissipation assembly 40 further includes an inner circulation heat dissipation assembly 44, and the inner circulation heat dissipation assembly 44 includes an inner circulation pipe 44a, and the inner circulation pipe 44a is connected to the transmission 30 to conduct the heat of the transmission 30. Optionally, the inner circulation pipe 44a is connected to the first cavity 31 to circulate the coolant in the first cavity 31 to dissipate heat from the coolant.

[0164] In one embodiment, the internal circulation heat dissipation component 44 also includes a plurality of first heat dissipation fins 44b, which are spaced apart on the outer periphery of the internal circulation pipe 44a, and partial heat dissipation slits 40a are formed between adjacent first heat dissipation fins 44b. The internal circulation pipe 44a conducts the heat of the transmission 30 to the plurality of first heat dissipation fins 44b, and the wind from the fan 21 passes through the heat dissipation slits 40a between adjacent first heat dissipation fins 44b, thereby taking away the heat on the first heat dissipation fins 44b and improving the heat dissipation efficiency.

[0165] In one embodiment, the inner circulation pipeline 44a includes an input pipeline 441, an output pipeline 442 and an intermediate pipeline 443. Optionally, a plurality of first heat dissipation fins 44b may also be arranged on the periphery of any one of the input pipeline 441, the output pipeline 442 and the intermediate pipeline 443. Optionally, a plurality of first heat dissipation fins 44b may be arranged on the periphery of the input pipeline 441 and the output pipeline 442. Optionally, a plurality of first heat dissipation fins 44b may also be arranged on the periphery of the input pipeline 441, the output pipeline 442 and the intermediate pipeline 443. One end of the input pipeline 441 is connected to the first cavity 31, and the other end is connected to the intermediate pipeline 443. One end of the output pipeline 442 is connected to the first cavity 31, and the other end is connected to the intermediate pipeline 443. The coolant in the first cavity 31 flows out from the output pipeline 442, enters the input pipeline 441 through the flow channel of the intermediate pipeline 443, and then flows back to the first cavity 31 from the input pipeline 441, thereby realizing circulation. The input pipe 441 and the output pipe 442 are arranged on opposite sides of the motor 10, and the intermediate pipe 443 is arranged at the connection between the motor 10 and the rotating assembly 20. Further, the input pipe 441 and the output pipe 442 are arranged on opposite sides of the first housing 14, and the intermediate pipe 443 is arranged between the first housing 14 and the fan 21, so that the input pipe 441, the output pipe 442 and the intermediate pipe 443 surround the outer periphery of the first housing 14, increase the length of the inner circulation pipe 44a, and then increase the heat dissipation stroke, effectively improve the heat dissipation efficiency, and save the space required by the traditional cooling device, reduce the volume, and improve the space utilization.

[0166] In one embodiment, the internal circulation heat dissipation assembly 44 further includes a first pipe bracket 44c, which is fixed to the motor 10. Optionally, the first pipe bracket 44c is arranged in the first recess 14a, reducing the space occupied by the first pipe bracket 44c and improving the space utilization. The first pipe bracket 44c is provided with a first pipe hole, and the first pipe bracket 44c is arranged between the input pipe 441 and the intermediate pipe 443. The input pipe 441 and the intermediate pipe 443 are connected to the first pipe hole. A plurality of first heat dissipation fins 44b are arranged at intervals on the outer periphery of the first pipe bracket 44c and extend along the radial direction of the input pipe 441. By providing the first pipe bracket 44c, the heat dissipation area of ​​the first heat dissipation fins 44b is increased, and the heat dissipation efficiency is improved.

[0167] In one embodiment, the internal circulation heat dissipation assembly 44 further includes a second pipe bracket 44d, and the second pipe bracket 44d is fixed to the motor 10. Optionally, the second pipe bracket 44d is arranged in another first recess 14a, reducing the space occupied by the second pipe bracket 44d, and further improving the space utilization. The second pipe bracket 44d is provided with a second pipe hole, and the second pipe bracket 44d is arranged between the output pipe 442 and the intermediate pipe 443. The output pipe 442 and the intermediate pipe 443 are connected to the second pipe hole, and a plurality of first heat dissipation fins 44b are arranged at intervals on the outer periphery of the second pipe bracket 44d, and extend along the radial direction of the output pipe 442. By providing the second pipe bracket 44d, the heat dissipation area of ​​the first heat dissipation fins 44b is increased, and the heat dissipation efficiency is improved.

[0168] See also Fig.10 , Fig.11 and Fig.12 In one embodiment, the transmission 30 is provided with a liquid outlet 30c and a liquid inlet 30d, and the inner circulation pipe 44a is connected to the first cavity 31 through the liquid outlet 30c and the liquid inlet 30d. Optionally, the second housing 30b is provided with a liquid outlet 30c and a liquid inlet 30d, the input pipe 441 is connected to the liquid inlet 30d, and the output pipe 442 is connected to the liquid outlet 30c. The coolant in the first cavity 31 enters the output pipe 442 from the liquid outlet 30c, and enters the first cavity 31 from the liquid inlet 30d through the intermediate pipe 443 and the input pipe 441, so as to circulate and dissipate heat, and the air blown out by the fan 21 is heat-exchanged with the heat on the first heat dissipation fin 44b, the inner circulation pipe 44a, the first pipe bracket 44c and the second pipe bracket 44d, so as to improve the heat dissipation efficiency.

[0169] In one embodiment, the vertical distance between the center of the liquid outlet 30c and the bottom surface of the first cavity 31 is smaller than the vertical distance between the center of the liquid inlet 30d and the bottom surface of the first cavity 31, and during the circulation of the coolant, the coolant submerges the liquid outlet 30c, so that the coolant enters the inner circulation pipe 44a, the first pipe support 44c and the second pipe support 44d from the lower liquid outlet 30c for circulation, and by submerging the liquid outlet 30c, the air is reduced from entering the inner circulation pipe 44a, the first pipe support 44c and the second pipe support 44d from the liquid outlet 30c to affect the circulation of the coolant.

[0170] In one embodiment, the internal circulation heat dissipation component 44 also includes an internal circulation driving member 44e, which is disposed in the first chamber 31a and connected to the end of the power output shaft 34. The internal circulation driving member 44e is driven to move by the rotation of the power output shaft 34, so that the coolant enters the internal circulation pipe 44a, the first pipe bracket 44c and the second pipe bracket 44d from the liquid outlet 30c, and flows back to the first cavity 31 from the liquid inlet 30d, thereby allowing the coolant to circulate in the internal circulation pipe 44a, the first pipe bracket 44c and the second pipe bracket 44d.

[0171] In one embodiment, the vertical distance between the liquid inlet 30d and the power output shaft 34 is smaller than the vertical distance between the liquid outlet 30c and the power output shaft 34, and the liquid inlet 30d is arranged in the area between the side of the inner circulation driving member 44e facing the power output shaft 34 and the power output shaft 34. By arranging the liquid inlet 30d at a position close to the power output shaft 34, the coolant can quickly return to the position of the power output shaft 34 for cooling and lubrication after cooling.

[0172] See also Figure 1 , Fig.13 and Fig.14 In one embodiment, the heat dissipation assembly 40 further includes a heat pipe 45, which is thermally coupled to the transmission 30, and the heat dissipation of the transmission 30 is performed through the heat pipe 45. Optionally, a plurality of heat pipes 45 are provided, and the plurality of heat pipes 45 are connected to the second housing 30b and arranged side by side, and the arrangement direction of the plurality of heat pipes 45 is perpendicular to the axial direction of the power input shaft 33 and the power output shaft 34. Adjacent heat pipes 45 are arranged at intervals, and the heat-conducting medium promoted by the fan 21 can flow between adjacent heat pipes 45 to take away the heat on the heat pipes 45, thereby improving the heat dissipation efficiency.

[0173] In one embodiment, the heat dissipation assembly 40 also includes a plurality of second heat dissipation fins 46, and the plurality of second heat dissipation fins 46 are in contact with and connected to the heat pipe 45. Adjacent second heat dissipation fins 46 are spaced apart to form partial heat dissipation slits 40a. The heat-conducting medium pushed by the fan 21 can flow through the heat dissipation slits 40a between adjacent second heat dissipation fins 46 to take away the heat on the second heat dissipation fins 46. By setting the second heat dissipation fins 46, the heat dissipation area is increased, and the heat dissipation efficiency is further improved.

[0174] In one embodiment, a plurality of second heat dissipating fins 46 are stacked at intervals along the length direction of the heat pipe 45, each heat pipe is inserted and connected with a plurality of second heat dissipating fins 46, and each second heat dissipating fin 46 is inserted and connected with a plurality of heat pipes, so as to increase the contact area between the second heat dissipating fins 46 and the heat pipe 45 and the heat dissipation area of ​​the second heat dissipating fins 46, thereby further improving the heat dissipation efficiency.

[0175] In one embodiment, the heat dissipation assembly 40 further includes a heat pipe bracket 47, the heat pipe bracket 47 is in contact with the transmission 30, and the plurality of heat pipes 45 are fixed to the heat pipe bracket 47. Optionally, the heat pipe bracket 47 is in contact with the second housing 30b, and a plurality of embedded grooves 471 are provided on a side of the heat pipe bracket 47 away from the second housing 30b, and the plurality of heat pipes 45 are correspondingly embedded in the plurality of embedded grooves 471.

[0176] In one embodiment, the heat pipe support 47 includes a fitting portion 47a and an extension portion 47b, wherein the fitting portion 47a fits the second housing 30b, and the extension portion connects the fitting portion 47a. A plurality of embedded grooves 471 are provided on the side of the fitting portion 47a and the extension portion 47b away from the second housing 30b. A plurality of third heat dissipation fins 472 are provided on the side of the extension portion 47b facing the second housing 30b, and adjacent third heat dissipation fins 472 are arranged at intervals to form a partial heat dissipation slit 40a. The heat-conducting medium pushed by the fan 21 can flow through the heat dissipation slit 40a between adjacent third heat dissipation fins 472 to take away the heat on the third heat dissipation fins 472. Optionally, two extension portions 47b are provided, and the two extension portions 47b are connected to both sides of the fitting portion 47a, so as to increase the area for setting the heat pipe 45, thereby increasing the number of heat pipes 45 and the area of ​​the second heat dissipation fins 46, so as to improve the heat dissipation efficiency.

[0177] In one embodiment, the fitting portion 47a is provided with a second arc surface 473, and the second arc surface 473 fits the second housing 30b, which can increase the contact area between the fitting portion 47a and the second housing 30b, thereby increasing the heat dissipation area and further improving the heat dissipation efficiency.

[0178] Please also read Figures 15 to 17 , in one embodiment, with Figures 1 to 14 The embodiment of the present invention is substantially the same, except that the heat dissipation assembly 40 cancels the internal circulation heat dissipation assembly 44, the heat pipe 45, the second heat dissipation fin 46 and the heat pipe bracket 47 to simplify the structure of the heat dissipation assembly 40. The transmission 30 includes a housing 35 and a gear set 32. The housing 35 and the motor 10 define a first cavity 31. The gear set 32 ​​is accommodated in the first cavity 31. The first cavity 31 is used to contain the coolant. The gear set 32 ​​is connected to the motor 10 and is thermally coupled with the coolant. Correspondingly, the position where the first recess 14a of the first housing 14 is set is replaced by the first heat sink 41 to increase the heat dissipation area of ​​the first heat sink 41. It can be understood that the transmission method of the gear set 32 ​​and the circulation method of the coolant in the first cavity 31 can be similar to the above embodiments.

[0179] The housing 35 is provided with fifth heat sinks 351, which extend radially along some gears of the gear set 32, and partial heat dissipation slits 40a are formed between adjacent fifth heat sinks 351. The heat dissipation slits 40a of at least some of the fifth heat sinks 351 are connected to the air guide cover 43, and the wind of the fan 21 is guided from the air guide cover 43 to the fifth heat sink 351, and passes through the heat dissipation slits 40a between adjacent fifth heat sinks 351, taking away the heat on the fifth heat sink 351, thereby improving the heat dissipation efficiency.

[0180] Specifically, the housing 35 includes a housing body 352 and a housing cover 353. The housing body 352 is connected to the first housing 14, and the housing cover 353 is sealed and connected to the opening of the housing body 352 away from the first housing 14 to form the first cavity 31. The fifth heat sink 351 is arranged at intervals on the peripheral side of the housing body 352. Optionally, at a position where the housing body 352 is adjacent to the first guide plate 431, the fifth heat sink 351 is arranged at intervals on a side of the housing body 352 away from the housing cover 353, so as to facilitate communication with the guide cover 43. At a position where the housing body 352 is adjacent to the second guide plate 432, the fifth heat sink 351 is arranged at intervals on a side of the housing body 352 facing the housing cover 353, so as to be directly exposed to the external environment and perform heat exchange with the external environment.

[0181] See also Figure 8 In one embodiment, the power device 100 further includes two first suspension brackets 60 and two second suspension brackets 70, the two first suspension brackets 60 are fixed to one side of the motor 10, the two second suspension brackets 70 are fixed to the other side of the motor 10, and the two first suspension brackets 60 and the two second suspension brackets 70 are arranged opposite to each other. Each first suspension bracket 60 is provided with a first shock-absorbing suspension 61, and each second suspension bracket 70 is provided with a second shock-absorbing suspension 71, which is used to buffer and damp the power device 100 and increase the stability of the power device 100. Optionally, the two first suspension brackets 60 are fixed to the first housing 14, and the two second suspension brackets 70 are fixed to the first housing 14. Optionally, the two first suspension brackets 60 are fixed to the air deflector 43, and the two second suspension brackets 70 are fixed to the air deflector 43.

[0182] In one embodiment, the two first suspension brackets 60 are arranged along the axial direction of the output shaft of the motor 10, and the two second suspension brackets 70 are arranged along the axial direction of the output shaft of the motor 10. Optionally, the two first suspension brackets 60 are arranged along the axial direction of the power input shaft 33 and the power output shaft 34, and the two second suspension brackets 70 are arranged along the axial direction of the power input shaft 33 and the power output shaft 34.

[0183] Please also read Figures 15 to 17In one embodiment, the power device 100 further includes a protective cover 80, which surrounds the outer periphery of the bracket 42 and defines a first receiving cavity 81 with the bracket 42. The protective cover 80 is spliced ​​with the second guide plate 432, and the driver 50 is disposed in the first receiving cavity 81 to protect the driver 50. Specifically, the protective cover 80 includes a top plate 82, two first side plates 83, and two second side plates 84. The top plate 82 is disposed on the side of the driver 50 away from the bracket 42. The two first side plates 83 are disposed at both sides of the top plate 82 along the axial direction of the power input shaft 33, one of the first side plates 83 extends toward the rotating assembly 20 and covers at least part of the rotating assembly 20 to protect the rotating assembly 20, and the other first side plate 83 extends toward the transmission 30 and covers at least part of the transmission 30 to protect the transmission 30. The two second side plates 84 are connected to both sides of the top plate 82, and the two first side plates 83 are connected to each of the two sides of the second side plate 84. Each second side plate 84 is also connected to the second guide plate 432 to support the protective cover 80 .

[0184] In one embodiment, the second guide plate 432 includes a first plate 4321, a second plate 4322 and a third plate 4323. The first plate 4321 is connected to the bracket 42. In the axial direction of the power input shaft 33, one end of the first plate 4321 is roughly flush with the rotating assembly 20, and the other end is roughly flush with the transmission 30. The second plate 4322 is connected to the end of the bracket 42 close to the rotating assembly 20 and is bent relative to the first plate 4321. The end of the second plate 4322 away from the first plate 4321 is spliced ​​with the second side plate 84. The third plate 4323 is connected to the end of the bracket 42 close to the transmission 30 and extends outward along the axial direction of the power input shaft 33, so that the third plate 4323 is located between the transmission 30 and the first side plate 83. The end of the third plate 4323 away from the first plate 4321 is also spliced ​​with the second side plate 84. Two ends of the second side plate 84 are respectively spliced ​​with the second plate 4322 and the third plate 4323 to improve the structural stability of the second side plate 84 and further improve the structural stability of the protective cover 80 .

[0185] In one embodiment, the protective cover 80 is provided with a plurality of heat dissipation holes 85 connected to the first receiving cavity 81, so as to facilitate heat dissipation of the driver 50. Specifically, the distance between the second side plate 84 and the driver 50 is smaller than the distance between the first side plate 83 and the driver 50, and the heat dissipation holes 85 are provided on the second side plate 84, so as to reduce the transmission path of the heat dissipated by the driver 50 to the heat dissipation holes 85, and further improve the heat dissipation efficiency. Optionally, the edges of two adjacent heat dissipation holes 85 facing each other are parallel to each other, so that the heat dissipation holes 85 are arranged on the second side plate 84.

[0186] In one embodiment, the driver 50 includes a cover 51 and a driving body 52, the cover 51 is connected to the bracket 42 and defines a second receiving cavity 53 with the bracket 42, the driving body 52 is disposed in the second receiving cavity 53 and is electrically connected to the motor 10, and the cover 51 also abuts against the inner side of the protective cover 80 to further improve the structural stability of the protective cover 80. Specifically, an extension portion 511 is provided on a side of the cover 51 away from the bracket 42, the extension portion 511 extends toward the first side plate 83 covering the transmission 30, and both ends of the extension portion 511 abut and are fixed to the second side plate 84 respectively.

[0187] It is understood that the present application is not limited to the embodiment in which both ends of the extension portion 511 are respectively abutted and fixed to the second side plate 84, and the structure in which the cover body 51 abuts against any position inside the protective cover 80 is an embodiment of the present application. For example, the cover body 51 abuts against at least one of the top plate 82, the first side plate 83, and the second side plate 84.

[0188] In one embodiment, the driver 50 includes an electrical connector 54, and the bracket 42 and the first shell 14 are provided with a first through hole 422 that is set through. The electrical connector 54 is connected to the stator 11 through the first through hole 422 to electrically connect the driver 50 and the stator 11, thereby improving the integration of the driver 50 and the motor 10.

[0189] Optionally, the second plate 4322, the third plate 4323 and the extension portion 511 can be fastened to the second side plate 84 by means of screws, pins, snap-fit ​​structures, or threaded locking structures, and can be quickly disassembled and maintained.

[0190] See also Fig.18 The present application also provides a propeller 200 using the above power device 100, the propeller 200 includes a propeller 201, the propeller 201 is connected to one end of the power output shaft 34 extending out of the first housing 30a, the power input shaft 33 is driven to rotate through the rotating shaft 13, the power input shaft 33 drives the power output shaft 34 to rotate through the gear set 32, and then the power output shaft 34 drives the propeller 201 to rotate, so as to realize the propulsion function. Optionally, the propeller 200 includes a marine propeller.

[0191] In one embodiment, the propeller 200 further includes a tail shaft 202 , which is axially connected between the propeller 201 and the power output shaft 34 to transmit the rotational torque to the propeller 201 .

[0192] The present application also provides a movable device 300 in water area using the above-mentioned propeller 200, including a movable body 300a, a power device 100 installed on the movable body 300a, and the propeller 201 is driven to rotate by the power device 100, and the propeller 201 pushes the movable body 300a to move. Optionally, the movable device 300 in water area may include various types of water transportation tools such as commercial ships, passenger ships, yachts, fishing boats, sailboats, civilian ships, etc., and may also be water area inspection equipment, water area management equipment, water area environment monitoring equipment, etc., which can be moved in water areas.

[0193] The above-mentioned power device 100, propeller and movable device in water area cooperate through the rotating component 20 and the heat dissipation component 40. The rotating component 20 promotes the heat-conducting medium to flow through the multiple heat dissipation slits 40a of the heat dissipation component 40 for heat exchange, and takes away the heat of the heat dissipation component 40 through the heat-conducting medium, thereby improving the heat dissipation efficiency.

[0194] Those skilled in the art should recognize that the above embodiments are only used to illustrate the present application, and are not used as limitations on the present application. As long as they are within the spirit of the present application, appropriate changes and modifications to the above embodiments are within the scope of the present application.

Claims

1. A power device, applied to a propeller, the propeller is an inboard engine, the power device is located in the cabin, and is characterized in that: include: Motor; A rotating assembly, disposed at one end of the motor; A transmission is arranged at one end of the motor away from the rotating assembly, and is used for speed-changing the rotation torque output by the motor. The other end of the transmission is away from the motor and is used for outputting the rotation torque to the propeller via the tail shaft. One end of the tail shaft is connected to the transmission and is located inside the cabin, and the other end of the tail shaft is connected to the propeller and is located outside the cabin. A heat dissipation component is disposed outside the housing of the motor and outside the housing of the transmission and is thermally coupled to the transmission and the motor; The heat dissipation component is also provided with a bracket fixed to the motor, and the power device also includes a driver fixed to the side of the bracket away from the motor, the driver is electrically connected to the motor, and the refrigerant pushed by the rotating component first passes through the space between the bracket and the motor and then passes through the transmission; The heat dissipation component has a plurality of heat dissipation slits, at least some of which are located in the space between the bracket and the motor to dissipate heat from the driver, and the air in the heat dissipation slits forms an open flow with the external ambient air of the motor and the transmission, and the rotating component can push the air to flow through the plurality of heat dissipation slits, and take away the heat of the heat dissipation component through the air; The heat dissipation assembly is provided with a plurality of first heat dissipation fins arranged at intervals on the outer periphery of the motor, the first heat dissipation fins are thermally coupled to the motor, and a portion of the heat dissipation slit is formed between two adjacent first heat dissipation fins; The side of the bracket facing the motor is provided with a plurality of second heat sinks arranged at intervals, a portion of the heat dissipation slit is formed between two adjacent second heat sinks, and the driver is fixed to a side of the bracket away from the second heat sink; The heat dissipation assembly also includes a deflector fixed to the outer periphery of the motor part and spliced ​​with the driver. A gap is provided between the deflector and the motor, the driver and the bracket, and the refrigerant pushed by the rotating assembly passes through the gap.

2. The power device according to claim 1, characterized in that: The motor is provided with a first housing, and the first heat sink is arranged on the outer periphery of the first housing.

3. The power device according to claim 2, characterized in that: The air guide cover includes a first air guide plate and a second air guide plate. The first air guide plate surrounds a portion of the outer circumference of the first shell. The second air guide plate is spliced ​​with the first air guide plate and connected to the driver.

4. The power device according to claim 2, characterized in that: The deflector includes a first deflector plate and two second deflectors, the two second deflectors are respectively connected to both sides of the bracket, the first deflector plate surrounds part of the outer circumference of the first shell, and both sides of the first deflector plate are spaced apart from the second deflectors.

5. The power device according to claim 4, characterized in that: The power device further includes a protective cover, which surrounds the outer periphery of the bracket and defines a first receiving cavity with the bracket. The protective cover is spliced ​​with the second guide plate, and the driver is disposed in the first receiving cavity.

6. The power device according to claim 5, characterized in that: The driver includes a cover body and a driving body. The cover body is connected to the bracket and defines a second receiving cavity with the bracket. The driving body is arranged in the second receiving cavity and is electrically connected to the motor. The cover body also abuts against the inner side of the protective cover.

7. The power device according to claim 5, characterized in that: The protective cover is provided with a plurality of heat dissipation holes connected to the first receiving cavity.

8. The power device according to claim 2, characterized in that: The motor is provided with a stator and a rotor accommodated in the first housing, and a rotating shaft fixed to the rotor, and one end of the rotating shaft is connected to the transmission.

9. The power device according to claim 8, characterized in that: The driver includes an electrical connector, the bracket and the first shell are provided with a first through hole which is arranged through the bracket, and the electrical connector is connected to the stator through the first through hole.

10. The power device according to claim 1, characterized in that: The rotating assembly includes a fan and a second shell, the second shell is connected to the motor, the fan is rotatably connected to the second shell, and the fan is used to promote the flow of refrigerant.

11. The power device according to claim 10, characterized in that: The rotating assembly further includes a fan driving member, which is fixed to the second housing and electrically connected to the fan to drive the fan to rotate.

12. The power device according to any one of claims 1 to 11, characterized in that: The heat dissipation component is provided with an internal circulation heat dissipation component, which is provided with an internal circulation pipe and a plurality of first heat dissipation fins arranged on the internal circulation pipe, a portion of the heat dissipation slit is formed between two adjacent first heat dissipation fins, and the internal circulation pipe is connected to the transmission for conducting the heat of the transmission to the plurality of first heat dissipation fins.

13. The power device according to claim 12, characterized in that: The transmission is provided with a first cavity and a gear set accommodated in the first cavity, the first cavity is communicated with an internal circulation pipeline, a coolant circulates between the first cavity and the internal circulation pipeline, the gear set is connected to the motor and thermally coupled with the coolant.

14. The power device according to claim 13, characterized in that: The first cavity includes a first chamber and a second chamber, the first chamber is connected to the second chamber, the gear set can stir part of the coolant in the first chamber to enter the second chamber, and the coolant in the second chamber can flow back to the first chamber.

15. The power device according to claim 14, characterized in that: A first partition and a second partition are provided in the first cavity. The first partition and the inner wall of the first cavity form a first cavity. The second partition and the inner wall of the first cavity form a second cavity. The first cavity and the second cavity together form the second cavity.

16. The power device according to claim 15, characterized in that: The first volume cavity is communicated with the first chamber via a first reflux channel, and the second volume cavity is communicated with the first chamber via a second reflux channel.

17. The power device according to claim 15, characterized in that: A first connecting portion connecting the first partition and the second partition is also provided in the first cavity, a first groove is provided on the surface of the first connecting portion, a first through hole connected to the first chamber is provided on the bottom surface of the first groove, and the oil in the first groove flows to the first chamber through the first through hole.

18. The power device according to claim 13, characterized in that: The transmission includes a first housing and a second housing, the second housing is connected to the motor, the first housing is connected to the second housing to form the first chamber and the second chamber, the second chamber is partially located in the first housing, and the second housing is provided with a third reflux channel, and the third reflux channel connects the second chamber and the first chamber.

19. The power device according to claim 18, characterized in that: A third heat sink is disposed on a side of the second housing facing away from the first housing. The third heat sink extends radially along part of the gears of the gear set, and part of the heat dissipation slit is formed between two adjacent third heat sinks.

20. The power device according to claim 19, characterized in that: A fourth heat sink is disposed on a side of the first housing facing away from the second housing, and the third heat sink extends radially along some gears of the gear set.

21. The power device according to claim 18, characterized in that: The transmission is provided with a power input shaft connected to the motor shaft, and a power output shaft separated from the power input shaft, and the gear set is connected between the power input shaft and the power output shaft.

22. The power device according to claim 21, characterized in that: A first sealing member is disposed between the power input shaft and the inner wall of the first cavity.

23. The power device according to claim 21, characterized in that: A second sealing member is disposed between the power output shaft and the inner wall of the first cavity.

24. The power device according to claim 12, characterized in that: The transmission is provided with a liquid outlet and a liquid inlet, the internal circulation pipe connects the liquid outlet and the liquid inlet, and the vertical distance from the center of the liquid outlet to the bottom of the transmission is smaller than the vertical distance from the center of the liquid inlet to the bottom of the transmission.

25. The power device according to claim 13, characterized in that: The internal circulation pipeline has an input pipeline and an output pipeline connected to the transmission, and an intermediate pipeline connected between the input pipeline and the output pipeline. The input pipeline and the output pipeline are respectively arranged on both sides of the motor. The input pipeline is used to input coolant into the first cavity, and the output pipeline is used to output coolant from the first cavity. The intermediate pipeline is close to the motor connected to the rotating component.

26. The power device according to claim 25, characterized in that The plurality of first heat dissipation fins are arranged around the outer periphery of the input pipe and the output pipe.

27. The power device according to claim 26, characterized in that: The internal circulation heat dissipation component also includes a first pipe bracket and a second pipe bracket, the first pipe bracket and the second pipe bracket are both fixed to the motor, the first pipe bracket is provided with a first pipe hole, the second pipe bracket is provided with a second pipe hole, the input pipe cooperates with the first pipe hole, the output pipe cooperates with the second pipe hole, the multiple first heat dissipation fins are arranged on the first pipe bracket and the second pipe bracket, and extend correspondingly along the radial direction of the input pipe and along the radial direction of the output pipe.

28. The power device according to any one of claims 1 to 11, characterized in that: The heat dissipation assembly is further provided with a heat pipe thermally coupled to the transmission and a plurality of second heat dissipation fins in contact with the heat pipe, and a portion of the heat dissipation slit is formed between two adjacent second heat dissipation fins.

29. The power device according to claim 28, characterized in that The heat dissipation component is provided with a plurality of heat pipes, which are arranged side by side, and the arrangement direction of the plurality of heat pipes is perpendicular to the output shaft direction of the motor, and the refrigerant driven by the rotating component is allowed to flow between two adjacent heat pipes.

30. The power device according to claim 28, characterized in that: The plurality of second heat dissipation fins are stacked at intervals, and each of the second heat dissipation fins is configured to allow a plurality of heat pipes to penetrate and cooperate with each other.

31. The power device according to claim 28, characterized in that: The heat dissipation component is further provided with a heat pipe bracket, the heat pipe bracket is in contact with the transmission, and the plurality of heat pipes are embedded in the heat pipe bracket.

32. The power device according to claim 31, characterized in that: The heat pipe bracket is provided with a plurality of embedding grooves on a side away from the transmission, and the plurality of heat pipes are correspondingly embedded in the plurality of embedding grooves.

33. The power device according to claim 31, characterized in that: The heat pipe bracket is provided with a fitting portion fitted to the transmission and extension portions located on both sides of the fitting portion, the extension portions are provided with a plurality of third heat dissipation fins, and a portion of the heat dissipation slit is formed between two adjacent third heat dissipation fins.

34. The power device according to any one of claims 1 to 11, characterized in that: The transmission includes a housing and a gear set, the housing and the motor define a first cavity, the gear set is accommodated in the first cavity, the first cavity is used to contain coolant, the gear set is connected to the motor and thermally coupled with the coolant, the housing is provided with a fifth heat sink, the fifth heat sink extends radially along part of the gears of the gear set, and part of the heat dissipation slit is formed between two adjacent fifth heat sinks.

35. The power device according to any one of claims 1 to 11, characterized in that: The power device also includes two first suspension brackets fixed to one side of the motor and two second suspension brackets fixed to the other side of the motor. The power device also includes a first shock-absorbing suspension configured on the first suspension bracket and a second shock-absorbing suspension configured on the second suspension bracket.

36. The power device according to claim 35, characterized in that The two first suspension brackets are arranged along a direction parallel to the axial center of the output shaft of the motor, and the two second suspension brackets are arranged along a direction parallel to the axial center of the output shaft of the motor.

37. A propeller, characterized in that: It comprises a power device as described in any one of claims 1 to 36, as well as a propeller and a tail shaft, wherein the tail shaft is connected between the propeller and the transmission to transmit the rotational torque to the propeller.

38. A movable device in water area, characterized in that: It comprises a movable body and the propeller as described in claim 37, wherein the power device is arranged on the movable body, and the propeller can rotate to push the movable body to move.

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