Electric propeller and water area movable equipment

Abstract

A motorized thruster (100) and a water area mobile device (1000). The electric propeller (100) comprises a shell (10), a motor (20), a speed reducer (30) and a propeller (40). The shell (10) is provided with a cavity (10a) used for being at least partially located underwater, the cavity (10a) is used for containing insulating lubricating liquid (90), and the insulating lubricating liquid (90) can exchange heat with the shell (10). The motor (20) is arranged in the cavity (10a), the motor (20) can make contact with the insulating lubricating liquid (90) during operation, and the motor (20) is provided with a motor shaft (21). The speed reducer (30) is arranged in the cavity (10a), the speed reducer (30) can make contact with the insulating lubricating liquid (90) during operation, and the input end of the speed reducer (30) is connected to the motor shaft (21). The propeller (40) is connected to the output end of the speed reducer (30) and located outside the shell (10).

Description

Technical Field

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

[0002] The propulsion mode of outboard motors is divided into motor-under-mounted and motor-over-mounted according to the position of the motor. Among them, the motor-under-mounted means that the motor is placed at the bottom of the outboard motor, and the output shaft of the motor directly drives the propeller to rotate. This structure has the highest energy utilization rate.

[0003] Since the motor is placed underwater, it is necessary to ensure that the underwater part of the outboard motor is sealed. However, since the motor generates a lot of heat when the outboard motor is working, if it is not cooled and dissipated in time, the motor will have low working efficiency and reduce the energy conversion efficiency. Therefore, it is necessary to cool and dissipate the heat generated by the motor and some other heating components in time. In order to dissipate the heat of the motor and some other heating components, additional heat dissipation components need to be added, which will obviously increase the weight and cost of the outboard motor. Summary of the invention

[0004] The present application provides an electric propeller and a movable device in water area to improve the heat dissipation efficiency of an outboard motor.

[0005] To achieve the above object, the present application provides an electric propeller, which includes:

[0006] A shell having a cavity at least partially located underwater, the cavity being used to contain an insulating lubricating liquid capable of heat exchange with the shell;

[0007] A motor is disposed in the cavity, the motor can be in contact with the insulating lubricating liquid during operation, and the motor is provided with a motor shaft;

[0008] A reducer is disposed in the cavity, the reducer can be in contact with the insulating lubricating liquid during operation, and an input end of the reducer is connected to the motor shaft;

[0009] A propeller is connected to the output end of the reducer, and the propeller is located outside the shell.

[0010] The present application also provides an electric propeller, which includes:

[0011] A shell, provided with a cavity for being at least partially located under water and a heat exchange cavity for being at least partially located above water, wherein the cavity is used to contain an insulating lubricating liquid, and the insulating lubricating liquid can exchange heat with the shell;

[0012] A circulation flow path, cyclically connected to the cavity and the heat exchange cavity;

[0013] A power pump is arranged on the flow path of the insulating lubricating liquid to drive the insulating lubricating liquid to circulate in the cavity, the circulation flow path and the heat exchange cavity;

[0014] A motor, disposed in the underwater portion of the cavity, capable of heat exchange with the insulating lubricating fluid in the cavity;

[0015] A propeller connected to the motor via a shaft system, the propeller being located outside the housing and driven to rotate by the motor;

[0016] The heat exchange device is thermally coupled to the heat exchange cavity and exchanges heat with the insulating lubricating fluid in the heat exchange cavity.

[0017] The present application also provides a movable water area device, which includes a water area carrier and an electric propeller as described above, wherein the electric propeller is connected to the water area carrier.

[0018] The electric propeller and movable device for water areas provided by the present application can exchange heat with the motor and some other devices through the insulating lubricating liquid. For example, it can absorb the heat generated by the motor and the reducer during operation. For another example, it can exchange heat with some heat exchange devices located on the water. Since the insulating lubricating liquid is located in the cavity, the insulating lubricating liquid can exchange heat with the water outside the shell to dissipate the absorbed heat, thereby continuously releasing heat, and exchanging heat with the motor and some other devices to ensure the normal operation of the motor and some other devices. The electric propeller and movable device for water areas provided by the present application do not require additional heat dissipation devices, will not increase the weight of the electric propeller and movable device for water areas, have low cost and excellent heat exchange effect. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] In order to more clearly illustrate the embodiments of the present application or the technical solutions in the prior art, the drawings required for use in the embodiments or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present application. For ordinary technicians in this field, other drawings can be obtained based on the structures shown in these drawings without paying any creative work.

[0020] Figure 1 is one of the schematic diagrams of the electric propeller provided in the embodiment of the present application;

[0021] Figure 2 is an exploded structural diagram of an electric propeller provided in an embodiment of the present application;

[0022] Figure 3 yes Figure 2 The enlarged view of point A in the middle;

[0023] Figure 4 is a cross-sectional structural diagram of an electric propeller provided in an embodiment of the present application;

[0024] Figure 5 yes Figure 4 Enlarged view of point C in the middle;

[0025] Figure 6 This is one of the structural diagrams of the power pump of the electric propeller provided in the embodiment of the present application;

[0026] Figure 7 is an exploded structural diagram of a power pump of an electric propeller provided in an embodiment of the present application;

[0027] Figure 8 yes Figure 7 Middle AA section view;

[0028] Fig. 9 yes Figure 7 Middle BB section view;

[0029] Fig.10 This is the second schematic diagram of the electric propeller provided in the embodiment of the present application;

[0030] Fig.11 This is the third schematic diagram of the electric propeller provided in the embodiment of the present application;

[0031] Fig.12 This is the fourth schematic diagram of the electric propeller provided in the embodiment of the present application;

[0032] Fig.13 This is the fifth schematic diagram of the electric propeller provided in the embodiment of the present application;

[0033] Fig.14 This is the sixth schematic diagram of the electric propeller provided in the embodiment of the present application;

[0034] Fig.15 It is the CC section view in 14;

[0035] Fig.16 This is the second schematic diagram of the power pump of the electric propeller provided in the embodiment of the present application;

[0036] Fig.17 This is the seventh schematic diagram of the electric propeller provided in the embodiment of the present application;

[0037] Fig.18 This is the eighth schematic diagram of the electric propeller provided in the embodiment of the present application;

[0038] Fig.19 This is the ninth schematic diagram of the electric propeller provided in the embodiment of the present application;

[0039] Fig. 20 This is the tenth schematic diagram of the electric propeller provided in the embodiment of the present application;

[0040] Fig.21 This is the eleventh schematic diagram of the electric propeller provided in the embodiment of the present application;

[0041] Fig. 22 This is the twelfth schematic diagram of the electric propeller provided in the embodiment of the present application;

[0042] Fig.23 is a schematic diagram of a top view of an electric thruster provided in an embodiment of the present application;

[0043] Fig.24 This is the thirteenth schematic diagram of the electric propeller provided in the embodiment of the present application;

[0044] Fig.25 This is the fourteenth schematic diagram of the electric propeller provided in the embodiment of the present application;

[0045] Fig.26 This is the fifteenth schematic diagram of the electric propeller provided in the embodiment of the present application;

[0046] Fig. 27 This is the sixteenth schematic diagram of the electric propeller provided in the embodiment of the present application;

[0047] Fig.28 This is the seventeenth schematic diagram of the electric propeller provided in the embodiment of the present application;

[0048] Fig.29 This is the eighteenth schematic diagram of the electric propeller provided in the embodiment of the present application;

[0049] Fig.30 This is the nineteenth schematic diagram of the electric propeller provided in the embodiment of the present application;

[0050] Fig.31 This is the twentieth schematic diagram of the electric propeller provided in the embodiment of the present application;

[0051] Fig.32 This is the twenty-first schematic diagram of the electric propeller provided in the embodiment of the present application;

[0052] Fig.33 This is the twenty-second schematic diagram of the electric propeller provided in the embodiment of the present application;

[0053] Fig.34 This is the twenty-third schematic diagram of the electric propeller provided in the embodiment of the present application;

[0054] Fig.35 yes Figure 2 The enlarged view of point B in the middle;

[0055] Fig.36 This is the twenty-fourth schematic diagram of the electric propeller provided in the embodiment of the present application;

[0056] Fig.37 This is the twenty-fifth schematic diagram of the electric propeller provided in the embodiment of the present application;

[0057] Fig.38 This is the twenty-sixth schematic diagram of the electric propeller provided in the embodiment of the present application;

[0058] Fig.39 is a schematic diagram of a driving module of an electric thruster provided in an embodiment of the present application;

[0059] Fig.40 This is the twenty-seventh schematic diagram of the electric propeller provided in the embodiment of the present application;

[0060] Fig.41 This is the twenty-eighth schematic diagram of the electric propeller provided in the embodiment of the present application;

[0061] Fig.42 This is the twenty-ninth schematic diagram of the electric propeller provided in the embodiment of the present application;

[0062] Fig.43 This is the 30th schematic diagram of the electric propeller provided in the embodiment of the present application;

[0063] Fig.44 This is the thirty-first schematic diagram of the electric propeller provided in the embodiment of the present application;

[0064] Fig.45 This is the thirty-second schematic diagram of the electric propeller provided in the embodiment of the present application;

[0065] Fig.46 It is a schematic diagram of a movable device for use in water areas provided in an embodiment of the present application.

[0066] Description of Figure Numbers:

[0067] 1000: Mobile equipment in water area;

[0068] 100: electric propulsion;

[0069] 10: shell; 11: guide fin; 111: first section; 112: second section; 113: connection surface; 121: first liquid exchange valve; 122: second liquid exchange valve; 10a: cavity; 10b: heat exchange cavity; 10c: liquid storage cavity; 10d: liquid collecting tank; 10e: liquid exchange channel; 10f: reflux channel; 10g: reflux branch channel;

[0070] 20: motor; 21: motor shaft; 22: stator; 221: thermal conductive glue layer; 23: rotor; 24: cover;

[0071] 30: reducer; 31: gear; 321: input shaft; 322: intermediate shaft; 323: output shaft;

[0072] 40: propeller;

[0073] 50: power pump; 511: first housing; 5111: liquid inlet channel; 5112: liquid outlet channel; 512: second housing; 521: first rotor shaft; 522: first rotor; 523: second rotor; 523a: eccentric hole; 524: rotor limiting ring; 5241: first blocking part; 5242: second blocking part; 53: liquid outlet gap; 54: liquid blocking plate; 501: liquid inlet path; 5011: liquid suction port; 5012: liquid hose; 5013: counterweight; 502: liquid outlet path; 55: liquid discharge path; 551: liquid discharge pump; 56: overflow path;

[0074] 60: heat exchange device; 601a: heat exchange channel; 602: heat exchange element; 61: drive module; 611: drive circuit board; 612: drive cooling plate; 62: steering system; 621: steering motor; 622: electro-hydraulic steering motor; 623: steering hydraulic cylinder; 63: lifting system; 631: lifting motor; 632: electro-hydraulic lifting motor; 633: lifting hydraulic cylinder; 64: battery module;

[0075] 71: filter; 721: flow guide; 721a: flow guide groove; 721b: flow guide channel; 722: flexible flow guide tube; 731: fine filter; 732: vent valve; 733: air pressure regulating valve; 734: piston pipeline; 735: air pressure detection sensor; 74: control valve; 741: check valve; 75: first spray structure; 76: heat conduction member; 77: second spray structure; 781: partition structure; 78: boss structure; 79: liquid suction tube;

[0076] 80: circulation flow path; 81: circulation liquid outlet path; 82: circulation liquid return path;

[0077] 90: insulating lubricating fluid;

[0078] 200: water carrier; 201: steering wheel; 202: carrier equipment. DETAILED DESCRIPTION

[0079] The following will be combined with the drawings in the embodiments of the present application to clearly and completely describe the technical solutions in the embodiments of the present application. Obviously, the described embodiments are only part of the embodiments of the present application, not all of the embodiments. Based on the embodiments in the present application, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of this application.

[0080] It should be noted that all directional indications in the embodiments of the present application (such as up, down, left, right, front, back, etc.) are only used to explain the relative position relationship, movement status, etc. between the components in a certain specific posture. If the specific posture changes, the directional indication will also change accordingly.

[0081] It should also be noted that when an element is referred to as being "fixed on" or "disposed on" another element, it may be directly on the other element or there may be an intermediate element at the same time. When an element is referred to as being "connected to" another element, it may be directly connected to the other element or may be indirectly connected to the other element through an intermediate element.

[0082] In addition, the descriptions of "first", "second", etc. in this application are only for descriptive purposes and cannot be understood as indicating or implying their relative importance or implicitly indicating the number of the indicated technical features. Therefore, the features defined as "first" and "second" may explicitly or implicitly include at least one of the features. In addition, the technical solutions between the various embodiments can be combined with each other, but they must be based on the ability of ordinary technicians in this field to implement them. When the combination of technical solutions is contradictory or cannot be implemented, it should be deemed that such combination of technical solutions does not exist and is not within the scope of protection required by this application.

[0083] like Figure 1 and Figure 2 As shown, an electric propeller 100 provided in an embodiment of the present application includes a housing 10 , a motor 20 , a reducer 30 and a propeller 40 .

[0084] The housing 10 is provided with a cavity 10a for being at least partially located underwater, the cavity 10a is used to contain an insulating lubricating liquid 90, and the insulating lubricating liquid 90 can exchange heat with the housing 10. The motor 20 is provided in the cavity 10a, and the motor 20 can contact the insulating lubricating liquid 90 during operation, and the motor 20 is provided with a motor shaft 21. The reducer 30 is provided in the cavity 10a, and the reducer 30 can contact the insulating lubricating liquid 90 during operation, and the input end of the reducer 30 is connected to the motor shaft 21. The propeller 40 is connected to the output end of the reducer 30, and the propeller 40 is located outside the housing 10.

[0085] It is understandable that the motor 20 can contact with the insulating lubricating liquid 90 during operation. This contact can be achieved by directing the insulating lubricating liquid 90 to the motor 20 through other equipment, or by partially immersing the motor 20 during operation. Alternatively, when the motor 20 is running, the insulating lubricating liquid 90 deposited at the bottom of the housing 10 is separated from the motor 20, and the partially thrown insulating lubricating liquid 90 contacts the motor 20. Of course, when the motor 20 is not running, part of the motor 20 can also be immersed in the insulating lubricating liquid 90 to contact the insulating lubricating liquid 90, so as to keep the shaft or iron core of the motor 20 isolated from the air, prevent oxidation, and maintain lubrication ability. Similarly, the reducer 30 can contact with the insulating lubricating liquid 90 during operation. This contact can be achieved by directing the insulating lubricating liquid 90 to the reducer 30 through other equipment, or by partially immersing the reducer 30 in the insulating lubricating liquid 90 during operation, or when the reducer 30 is in operation, the insulating lubricating liquid 90 deposited at the bottom of the housing 10 is separated from the reducer 30, and the insulating lubricating liquid 90 that is partially thrown up contacts the reducer 30. Of course, when the reducer 30 is not in operation, part of the reducer 30 can also be immersed in the insulating lubricating liquid 90 to contact the insulating lubricating liquid 90. The part of the reducer 30 immersed in the insulating lubricating liquid 90 can be kept isolated from the air to prevent oxidation, and the insulating lubricating liquid 90 can also keep the reducer 30 lubricated and moist, reducing the resistance when the reducer 30 starts.

[0086] It can be understood that in the electric propeller 100, a reducer 30 is arranged between the motor 20 and the propeller 40. The reducer 30 can reduce the rotation speed of the motor shaft 21 and increase the torque output by the motor shaft 21 to ensure uniform and stable rotation of the propeller 40, improve the thrust of the propeller 40, and enable the electric propeller 100 to operate stably.

[0087] In the electric propeller 100 provided in the embodiment of the present application, the heat of the motor 20 and the reducer 30 can be absorbed by the insulating lubricating liquid 90. Since the insulating lubricating liquid 90 is located in the cavity 10a, the insulating lubricating liquid 90 can perform heat exchange with the water outside the housing 10 to dissipate the absorbed heat, thereby continuously releasing heat and performing heat exchange with the motor 20 and the reducer 30 to ensure the normal operation of the motor 20 and the reducer 30, thereby ensuring the stable operation of the electric propeller 100. In addition, there is no need to add additional heat dissipation devices, the weight of the electric propeller 100 will not be increased, the cost is low and the heat dissipation effect is excellent.

[0088] Exemplarily, the insulating lubricating liquid 90 is oil, so that efficient heat exchange can be achieved, and when it contacts the motor 20 and / or the reducer 30, it will not affect the operation of the motor 20 and / or the reducer 30, and can lubricate the motor 20 and / or the reducer 30. The insulating lubricating liquid 90 can also be other heat exchange liquids with insulating and lubricating effects, without limitation.

[0089] like Figure 2 and Figure 3 As shown, in some embodiments, the electric propeller 100 further includes a power pump system, which includes a power pump 50, a liquid inlet 501 (see Fig.12 ) and liquid outlet 502 (see Fig.12 ), the power pump 50 is connected to the liquid inlet 501 and the liquid outlet 502, the power pump 50 obtains the insulating lubricating liquid 90 in the cavity 10a through the liquid inlet 501, and the insulating lubricating liquid 90 obtained by the power pump 50 is pumped to a high position through the liquid outlet 502. In this way, the liquid level of the insulating lubricating liquid 90 in the cavity 10a can be reduced, and the oil stirring loss can be reduced by reducing the part of the motor 20 and / or the reducer 30 immersed in the insulating lubricating liquid 90, thereby ensuring the working efficiency of the motor 20 and the reducer 30, so that the propulsion effect of the electric propeller 100 is better. In addition, the power pump 50 can also suck the insulating lubricating liquid 90 to a high position through the liquid inlet 501, and flow out from the liquid outlet 502, so that it can exchange heat with the motor 20 or other devices. Of course, when the power pump system is not provided, the motor 20 and the reducer 30 can be partially immersed in the insulating lubricating liquid 90 to achieve contact and heat exchange.

[0090] In some embodiments, the power pump 50 is a mechanical pump. Pumping liquid is achieved by mechanical movement, which is low-cost and compact. For example, the power pump 50 is a cycloid pump. The cycloid pump has a simple and compact structure and strong self-priming force. For another example, the power pump 50 is a gear pump. The gear pump has uniform flow and high volumetric efficiency. For another example, the power pump 50 is a vane pump. The vane pump has uniform flow, stable operation and low noise.

[0091] In some other embodiments, the power pump 50 is an electronic pump, which can pump liquid by electronic control with high accuracy and reliability.

[0092] like Figure 2 and Figure 3 As shown, in some embodiments, the power pump 50 is a mechanical pump, which is disposed in the cavity 10a, and is coupled to the motor shaft 21 to operate under the torque of the motor shaft 21. When the motor 20 is running, it drives the motor shaft 21 to rotate, and the motor shaft 21 can simultaneously transmit power to the power pump 50 to drive the power pump 50 to operate and pump the insulating lubricating fluid 90 to a high level.

[0093] Exemplarily, the power pump 50 can pump liquid under the forward torque or reverse torque of the motor shaft 21. It is understandable that when the motor shaft 21 rotates forward or reversely, it will drive the propeller 40 to rotate in different directions. Regardless of whether the motor shaft 21 rotates forward or reversely, it can pump liquid, that is, as long as the motor 20 is running, it can pump liquid, and the electric propeller 100 can ensure stable pumping of liquid in any operating state.

[0094] like Figure 6 and Figure 7 As shown, in some embodiments, the power pump 50 is provided with a pump body and a pump housing, the pump housing is provided with a liquid inlet channel 5111 and a liquid outlet channel 5112, the liquid inlet channel 5111 is connected to the liquid inlet path 501, the liquid outlet channel 5112 is connected to the liquid outlet path 502, the pump body is provided in the pump housing, the pump body is connected to the motor shaft 21, so as to rotate with the rotation of the motor shaft 21, and pump the insulating lubricating liquid 90 in the liquid inlet channel 5111 to the liquid outlet channel 5112. When the motor shaft 21 rotates, it will drive the pump body to rotate, and then the insulating lubricating liquid 90 in the liquid inlet channel 5111 can be pumped to the liquid outlet channel 5112 to complete the pumping. In this way, no additional power is required, the cost is low and the structure is compact.

[0095] like Figures 6 to 9 As shown, exemplarily, the pump body includes a first rotor shaft 521, a first rotor 522 and a second rotor 523, the first rotor shaft 521 is connected to the motor shaft 21, the first rotor 522 is concentrically connected to the first rotor shaft 521, an eccentric hole 523a is provided in the second rotor 523, the first rotor 522 and the eccentric hole 523a are eccentrically matched, and the insulating lubricating liquid 90 is pumped from the liquid inlet channel 5111 to the liquid outlet channel 5112 through the gap between the eccentric hole 523a and the first rotor 522. When the motor 20 is running, the motor shaft 21 will drive the first rotor shaft 521 to rotate, and then drive the first rotor 522 to rotate. Since the first rotor 522 and the eccentric hole 523a are eccentrically matched, when the first rotor 522 rotates eccentrically relative to the eccentric hole 523a, the insulating lubricating liquid 90 will be continuously pumped from the gap between the eccentric hole 523a and the first rotor 522 from the liquid inlet channel 5111 to the liquid outlet channel 5112, thereby completing the pumping of liquid. The structure is simple and efficient.

[0096] In addition, the pump body further includes a rotor stop ring 524, which is sleeved on the outer peripheral side of the second rotor 523 to limit the offset position of the second rotor 523 relative to the first rotor 522. After limiting the offset position of the second rotor 523, the first rotor 522 can stably rotate eccentrically at the eccentric hole 523a at a specific position to complete the pumping of liquid. It can be understood that the offset position of the second rotor 523 needs to ensure that the eccentric hole 523a is connected to the liquid inlet channel 5111 and the liquid outlet channel 5112, so as to ensure the stable pumping of liquid by the first rotor 522.

[0097] like Figure 8 As shown, in some embodiments, the liquid outlet channel 5112 is provided with at least one forward liquid outlet channel and at least one reverse liquid outlet channel. When the motor 20 rotates forward, the liquid outlet rate of the forward liquid outlet channel is greater than the liquid outlet rate of the reverse liquid outlet channel, and when the motor 20 rotates reversely, the liquid outlet rate of the reverse liquid outlet channel is greater than the liquid outlet rate of the forward liquid outlet channel. When the motor 20 rotates forward, the forward liquid outlet channel can stably discharge liquid, and when the motor 20 rotates reversely, the reverse liquid outlet channel can stably discharge liquid, so as to ensure that the motor 20 can stably pump liquid in both forward and reverse rotations. For example, when the motor 20 rotates forward, the rotor limiting ring 524 can bias the second rotor 523, so that the liquid outlet rate of the forward liquid outlet channel is greater than the liquid outlet rate of the reverse liquid outlet channel; when the motor 20 rotates reversely, the rotor limiting ring 524 can bias the second rotor 523, so that the liquid outlet rate of the reverse liquid outlet channel is greater than the liquid outlet rate of the forward liquid outlet channel.

[0098] like Figure 6 As shown, the pump housing is provided with a blocking member, and the rotor limiting ring 524 is coaxially rotated with the second rotor 523, and the blocking member is used to position the rotational position of the rotor limiting ring 524, so as to position the second rotor 523 in the offset direction relative to the first rotor 522. It can be understood that when the first rotor 522 rotates, the first rotor 522 will contact the second rotor 523, and will also drive the second rotor 523 to rotate in the same direction. Since the rotor limiting ring 524 is coaxially rotated with the second rotor 523, it will also drive the rotor limiting ring 524 to rotate. After the rotor limiting ring 524 rotates, the blocking member positions the rotational position of the rotor limiting ring 524, and then can position the offset direction of the second rotor 523.

[0099] For example, when the motor 20 rotates forward, the rotor stop ring 524 rotates to the first position and contacts the blocking member, and the gap between the second rotor 523 and the first rotor 522 is offset and communicated with the forward liquid outlet channel; when the motor 20 rotates reversely, the rotor stop ring 524 rotates to the second position and contacts the blocking member, and the gap between the second rotor 523 and the first rotor 522 is offset and communicated with the reverse liquid outlet channel. In this way, when the motor 20 rotates forward and reversely, the rotor stop ring 524 can be positioned at different positions through the blocking member, and then the second rotor 523 can be offset at different positions, and the first rotor 522 can complete the pumping of liquid at different positions when the motor 20 rotates forward and reversely.

[0100] Exemplarily, the rotor limiting ring 524 is provided with a matching boss, one side of the matching boss forms a first blocking portion 5241, and the other side of the matching boss forms a second blocking portion 5242. When the motor 20 rotates forward, the rotor limiting ring 524 rotates forward, and the first blocking portion 5241 abuts against the blocking member; when the motor 20 rotates reversely, the rotor limiting ring 524 reverses, and the second blocking portion 5242 abuts against the blocking member. When the motor 20 rotates forward, the rotor limiting ring 524 rotates to the first position, and the first blocking portion 5241 abuts against the blocking member to position the rotor limiting ring 524. When the motor 20 rotates reversely, the rotor limiting ring 524 rotates to the second position, and the second blocking portion 5242 abuts against the blocking member to position the rotor limiting ring 524.

[0101] In some other embodiments, one liquid outlet channel 5112 is provided, and when the motor 20 rotates forward or reversely, the insulating lubricating liquid 90 in the liquid inlet channel 5111 is pumped to the liquid outlet channel 5112. Such a structure is simple and can ensure stable liquid discharge. For example, the position of the aforementioned rotor limiting ring 524 can be fixed to ensure that the first rotor 522 can stably pump liquid regardless of whether it rotates forward or reversely.

[0102] In some embodiments, at least two liquid outlet channels 5112 are provided, at least one of which discharges liquid to the stator 22 of the motor 20 and the gear 31 of the reducer 30, and at least one of which discharges liquid to the bearing shaft system of the motor 20 and the shaft bearing of the reducer 30. In this way, the insulating lubricating liquid 90 pumped out by the liquid outlet channel 5112 can contact the motor 20 and the reducer 30, and the insulating lubricating liquid 90 pumped to the stator 22 of the motor 20 and the gear 31 of the reducer 30 can achieve heat exchange with the stator 22 and the gear 31, and lubricate at the same time, and the insulating lubricating liquid 90 pumped to the bearing shaft system of the motor 20 and the shaft bearing of the reducer 30 can achieve heat exchange with the bearing shaft system of the motor 20 and the shaft bearing of the reducer 30, and lubricate at the same time.

[0103] In other embodiments, at least four liquid outlet channels 5112 are provided, at least one of which discharges liquid to the stator 22 of the motor 20, at least one of which discharges liquid to the gear 31 of the reducer 30, at least one of which discharges liquid to the bearing shaft system of the motor 20, and at least one of which discharges liquid to the shaft system bearing of the reducer 30. In this way, the insulating lubricating liquid 90 pumped out by the liquid outlet channels 5112 can contact the motor 20 and the reducer 30, and each liquid outlet channel 5112 can respectively realize heat exchange with the stator 22 of the motor 20, the gear 31 of the reducer 30, the bearing shaft system of the motor 20, and the shaft system bearing of the reducer 30, and lubricate them at the same time.

[0104] In some other embodiments, the liquid outlet channel 5112 is provided with at least two liquid outlets, at least one of which is for discharging liquid to the stator 22 of the motor 20 and the gear 31 of the reducer 30, and at least one of which is for discharging liquid to the bearing shaft system of the motor 20 and the shaft bearing of the reducer 30. In this embodiment, at least one liquid outlet channel 5112 may be provided, and the insulating lubricating liquid 90 may flow to different positions through different liquid outlets, so that the insulating lubricating liquid 90 may contact the motor 20 and the reducer 30. Exemplarily, the liquid outlet channel 5112 is provided with a forward liquid outlet channel and a reverse liquid outlet channel, wherein the forward liquid outlet channel is provided with two liquid outlets, one of which is for discharging liquid to the stator 22 of the motor 20 and the gear 31 of the reducer 30, and the other liquid outlet is for discharging liquid to the bearing shaft system of the motor 20 and the shaft bearing of the reducer 30; the forward liquid outlet channel is provided with one liquid outlet, and the liquid outlet is for discharging liquid to the stator 22 of the motor 20 and the gear 31 of the reducer 30.

[0105] In some embodiments, the liquid outlet is provided with a damping hole, or a damping member. By setting the liquid outlet as a damping hole or arranging a damping member at the liquid outlet, the liquid output of the liquid outlet can be controlled, thereby controlling the pumping flow rate of the power pump 50.

[0106] like Figure 6 and Figure 7 As shown, in some embodiments, the pump housing includes a second housing 512 and a first housing 511 connected to each other, the pump body is disposed in the second housing 512, and the liquid inlet channel 5111 and the liquid outlet channel 5112 are disposed in the first housing 511. In this way, it is convenient to install the power pump 50. Exemplarily, the blocking member is disposed in the second housing 512 to limit the rotor limiting ring 524.

[0107] Exemplarily, a liquid inlet channel 5111 and a liquid outlet channel 5112 are formed on the surface of the first housing 511 facing the second housing 512, and the pump body is arranged in the mounting groove of the second housing 512 facing the first housing 511, and the second housing 512 and the first housing 511 are connected to seal the liquid inlet channel 5111 and the liquid outlet channel 5112. The second housing 512 and the first housing 511 are sealed to ensure that the pumping liquid can be stably performed when the pump body rotates.

[0108] like Figure 4 and Figure 5 As shown, in addition, the pump housing is fixedly connected to the housing 10. In this way, the power pump 50 is fixed in the cavity 10a to ensure stable pumping of liquid. For example, the second housing 512 and the first housing 511 are fixedly connected to the housing 10 by screws.

[0109] like Figure 5As shown, illustratively, the power pump 50 is disposed between a plurality of continuously meshed gears 31 in the reducer 30, the first rotor shaft 521 is fixed to one of the rotating shafts of the reducer 30, the motor shaft 21 drives the rotating shaft of the reducer 30 to rotate, and the rotating shaft of the reducer 30 thereby drives the first rotor shaft 521 to rotate. Figure 5 In this example, the first rotor shaft 521 is inserted into the shaft hole in the middle of the rear end rotating shaft of the reducer 30 through interference fit at its end, so that the first rotor shaft 521 is fixed to the rotating shaft of the reducer 30 .

[0110] like Figure 5 and Figure 6 As shown, exemplarily, the first rotor shaft 521 is passed through the second housing 512 and inserted into the shaft hole in the middle of the tail end rotating shaft of the reducer 30. The first housing 511 is located on the side close to the motor 20. A closed liquid outlet gap 53 is formed between the middle of the first housing 511 relative to the first rotor shaft 521 and the first rotor shaft 521. The liquid outlet channel 5112 is provided with a first liquid outlet, and the first liquid outlet is connected to the liquid outlet gap 53. The first rotor shaft 521 is provided with a first through hole, and the first through hole is connected to the shaft hole in the middle of the tail end rotating shaft of the reducer 30 and the liquid outlet gap 53. The insulating lubricating liquid 90 pumped to the liquid outlet channel 5111 can flow to the liquid outlet gap 53 by pumping pressure, and then flow along the first through hole to the shaft hole in the middle of the tail end rotating shaft of the reducer 30, so as to lubricate the rotating shaft. A second through hole is provided in the middle of the first shell 511, and the second through hole is arranged opposite to the motor shaft 21. The insulating lubricating liquid 90 pumped to the liquid outlet channel 5111 can flow to the liquid outlet gap 53 through the pumping pressure, and then flow to the motor shaft 21 along the second through hole, so as to lubricate the motor shaft 21. In addition, a liquid baffle plate 54 is provided on the side of the first shell 511 facing the motor 20, which is surrounded by the second through hole. For example, the liquid baffle plate 54 is arranged between the bearing of the reducer 30 and the gap of the first shell 511 to ensure that the insulating lubricating liquid 90 flowing out of the second through hole flows to the motor shaft 21 and avoids flowing out from other gaps. When two liquid outlet channels 5112 are provided, the two liquid outlet channels 5112 are connected, and the first liquid outlet is located between the two liquid outlet channels 5112. When the motor 20 rotates forward or reversely, the insulating lubricating liquid 90 flowing out of the two liquid outlet channels 5112 can flow to the first liquid outlet.

[0111] like Figure 4 and Figure 6 As shown, in some embodiments, the liquid outlet channel 5112 outputs the sprinkled insulating lubricating liquid 90 to the motor 20 through the liquid outlet path. In this way, the insulating lubricating liquid 90 is in contact with the motor 20, and heat exchange between the motor 20 can be achieved.

[0112] like Figure 4 and Figure 6As shown, in some embodiments, the power pump system further includes a first spray structure 75, which is disposed adjacent to the motor 20, and is connected to the liquid outlet 502, and is used to spray the insulating lubricating liquid 90 output from the liquid outlet 502 to the motor 20. The insulating lubricating liquid 90 can be sprayed onto the motor 20 through the first spray structure 75 to achieve heat exchange with the motor 20. The heat exchange of the motor 20 is uniform, so as to quickly absorb the heat of the motor 20.

[0113] like Figure 4 and Figure 6 As shown, for example, the liquid outlet channel 5112 is provided with a second liquid outlet, and the second liquid outlet is connected to the liquid storage cavity 10c in the boss structure 78 (see Fig.16 ), for example, the boss structure 78 is disposed on the first shell 511, and the second liquid outlet extends along the first shell 511 to the liquid storage chamber 10c. The boss structure 78 abuts against the portion of the shell 10 located between the motor and the reducer, and a flow channel is provided in the portion of the shell 10 located between the motor and the reducer to communicate with the liquid storage chamber 10c. A third through hole is provided on the top of the boss structure 78, and the third through hole communicates with the liquid storage chamber 10c and the first spray structure 75. The insulating lubricating liquid 90 pumped to the liquid outlet channel will flow to the liquid storage chamber 10c through the second liquid outlet. Since the boss structure 78 abuts against the portion of the shell 10 located between the motor and the reducer, the liquid storage chamber 10c is sealed and communicates with the flow channel of the shell 10 located between the motor and the reducer, that is, it is sealed and connected with the third through hole. A first spray structure 75 is provided on one side of the motor, and the first spray structure 75 is connected to the flow channel of the housing 10 between the motor and the reducer, so that the insulating lubricating liquid in the liquid storage chamber 10c gradually accumulates. After the liquid level of the liquid storage chamber 10c reaches a certain height, the insulating lubricating liquid 90 enters the first spray structure 75 through the third through hole to spray the insulating lubricating liquid 90 onto the motor 20, and the insulating lubricating liquid 90 realizes heat exchange with the motor 20. When two liquid outlet channels 5112 are provided, the end of one of the liquid outlet channels 5112 is provided with a second liquid outlet.

[0114] Exemplarily, the first spray structure 75 is arranged to extend along the axial direction of the motor shaft 21, and the motor 20 is provided with at least two stator winding groups arranged side by side along the extension direction of the motor shaft 21, and the first spray structure 75 sprays liquid evenly to the at least two stator winding groups arranged side by side. Since the stator winding group generates a large amount of heat, the insulating lubricating liquid 90 is directly sprayed to the two stator winding groups, and heat exchange can be performed on the main heat-generating parts of the motor 20, so as to quickly cool down the motor 20 and ensure the stable operation of the motor 20.

[0115] Exemplarily, the first spray structure 75 is arranged to extend in an arc shape along an axial direction perpendicular to the motor shaft 21 , and is located above the motor 20 to achieve effective spraying of the motor 20 .

[0116] Exemplarily, the first spray structure 75 is provided with a plurality of spray holes arranged at intervals, and the insulating lubricating liquid can flow from the spray holes to the motor 20 to spray the motor 20 .

[0117] Exemplarily, a plurality of interconnected spray channels are arranged in the first spray structure 75, a plurality of spray holes are connected to the spray channels and are evenly spaced along the spray channels, some of the spray channels are extended along the axial direction of the motor shaft 21, and some of the spray channels are spaced perpendicular to the axial direction of the motor shaft 21, so as to achieve uniform and effective spraying of the motor 20.

[0118] like Fig.10 As shown, in some embodiments, the motor 20 includes a stator 22, a rotor 23 and a cover 24, the rotor 23 is driven by the stator 22 to rotate, the rotor 23 is connected to the motor shaft 21, and the cover 24 is disposed outside the rotor 23 to limit the rotor 23 from stirring the insulating lubricating liquid 90. By disposing the cover 24 outside the rotor 23, the rotor 23 can be prevented from contacting the insulating lubricating liquid 90, thereby preventing the working efficiency of the motor 20 from being affected by stirring the insulating lubricating liquid 90. Exemplarily, the stator 22 is disposed around the outer periphery of the rotor 23, and the cover 24 is located between the stator 22 and the rotor 23, so as to be disposed outside the rotor 23.

[0119] In some embodiments, the end of the cover 24 is fixed to the motor shaft 21. In this embodiment, the cover 24 rotates with the rotation of the rotor 23 to prevent the rotor 23 from directly contacting the insulating lubricating liquid 90. The cover 24 rotates with the rotor 23, and the oil stirring loss is smaller than when the rotor 23 directly contacts the insulating lubricating liquid 90. Therefore, it is possible to avoid a large liquid stirring loss in the rotor 23 of the motor 20, ensure the working efficiency of the motor 20, and make the propulsion effect of the electric propeller 100 better. For example, the cover 24 is provided with cover plates on both sides along the direction of the motor shaft 21, and the motor shaft 21 passes through the cover plate on one side and is fixedly connected to the cover plate.

[0120] In some other embodiments, the cover 24 may also be directly fixed to the outer periphery of the rotor 23 so as to rotate along with the rotation of the rotor 23 .

[0121] In other embodiments, the end of the cover 24 is rotatably disposed on the motor shaft 21. The cover 24 does not rotate with the rotation of the rotor 23 to prevent the rotor 23 from contacting the insulating lubricating liquid 90 when rotating. In this way, when the rotor 23 rotates, the cover 24 will not stir the oil or the oil stirring loss is small, thereby ensuring the working efficiency of the motor 20, so that the propulsion effect of the electric propeller 100 is better. For example, it can be fixed to the inner side of the stator 22, and one side of the cover 24 along the direction of the motor shaft 21 is a closed cover plate, and a bearing is provided between the other side and the motor shaft 21. In addition, the bearing is located on one side of the rotor 23 and is closed, which can prevent the insulating lubricating liquid 90 from entering the cover 24 from the bearing, and the insulating lubricating liquid 90 can also lubricate the bearing.

[0122] Exemplarily, the cover 24 is a magnetically permeable cover, and the cover 24 allows the magnetic field of the stator 22 and the rotor 23 to pass through. It can be understood that when the motor 20 is running, the stator winding on the stator 22 will generate a magnetic field force, and the magnetic field force will drive the magnet on the rotor 23 to move, so as to realize the rotation of the rotor 23 relative to the stator 22. Since the cover 24 is set outside the rotor 23, that is, between the rotor 23 and the stator 22, in order to avoid blocking the magnetic field, the cover 24 can be set as a magnetically permeable cover to ensure that the rotor 23 can rotate stably relative to the stator 22 and drive the propeller 40 to rotate. In this way, in order to avoid affecting the operation of the motor 20 itself, for example, the cover 24 is a PVC plastic cover.

[0123] like Fig.11 As shown, in some embodiments, the electric propeller 100 further includes a heat conductor 76, which is connected to the housing 10 and the stator 22. The heat of the motor 20 can be directly transferred to the housing 10 through the heat conductor 76, and then heat exchange can be achieved with water outside the housing 10 through the housing 10, thereby cooling the motor 20 to ensure the normal operation of the motor 20, and thus ensure the stable operation of the electric propeller 100. In this way, in combination with the heat exchange of the insulating lubricating fluid 90, a better heat dissipation effect of the motor 20 can be achieved.

[0124] like Fig.11As shown, in some embodiments, the stator 22 is provided with a stator winding group, and a heat-conducting glue layer 221 is provided on the periphery of the stator winding group, and the heat-conducting member is connected to the housing 10 and the heat-conducting glue layer 221. Providing the heat-conducting glue layer 221 on the periphery of the stator winding group will not affect the magnetic effect of the stator 22 on the rotor 23, ensuring the normal operation of the motor 20. Since the stator winding group generates a large amount of heat, a large amount of heat in the motor 20 can be directly transferred to the housing 10 through the heat-conducting glue layer 221 and the heat-conducting member 76, so as to quickly cool the motor 20 and ensure the stable operation of the motor 20. Exemplarily, the heat-conducting member 76 is heat-conducting copper. Exemplarily, the heat-conducting member 76 is connected to the shell wall of the housing 10 on the side closest to the motor 20. Exemplarily, the heat-conducting glue layer 221 is a heat-conducting silicone layer.

[0125] In other embodiments, the heat conductor 76 may not be provided. Since the stator 22 is fixedly connected to the shell 10, the stator 22 can directly contact the shell 10. For example, a slot body for mounting the stator 22 is provided in the shell 10. The stator 22 is placed in the slot body to achieve fixation and can directly contact the shell 10. In this way, the heat of the motor 20 can be transferred to the shell 10, and then heat exchange can be achieved with the water outside the shell 10 through the shell 10, so that the motor 20 can be cooled to ensure the normal operation of the motor 20.

[0126] like Figures 3 to 5 As shown, in some embodiments, the reducer 30 includes a plurality of continuously meshed gears 31, and the plurality of continuously meshed gears 31 are arranged between the input end and the output end. The plurality of continuously meshed gears 31 are in contact with the insulating lubricating liquid 90 for heat exchange when rotating. It can be understood that the motor shaft 21 of the motor 20 will drive the gear 31 at the input end of the reducer 30 to rotate, and then reduce the output speed of the output end through the plurality of continuously meshed gears 31 to ensure the stable rotation of the propeller 40. When the gear 31 in the reducer 30 rotates, it can contact with the insulating lubricating liquid 90, so that the gear 31 can be lubricated, and heat exchange can be achieved with the gear 31 and the shaft system in the reducer 30 to ensure the stable operation of the reducer 30.

[0127] Exemplarily, the reducer 30 includes at least two meshing gears 31, wherein the gear 31 with a smaller diameter is connected to the input end, and the gear 31 with a larger diameter is connected to the output end, so as to achieve the effect of output reduction. Figure 5 The reducer 30 includes three gears 31, namely, a gear 31 near the input end, a middle gear 31 and a gear 31 near the output end, which are meshed in sequence, wherein the gear 31 near the input end is coaxial with the gear 31 near the output end, and the aforementioned first rotor shaft 521 is connected to the shaft hole of the rotating shaft of the gear 31 near the output end.

[0128] Exemplarily, the housing 10 and the pump housing can serve as the outer shell of the reducer 30 and as a shaft system supporting the reducer 30 to ensure that the gear 31 in the reducer 30 can rotate stably.

[0129] In some embodiments, when the plurality of continuously meshing gears 31 rotate, the insulating lubricating liquid 90 at the lower part of the cavity 10a can be stirred to the higher part of the cavity 10a, and then fall back from the higher part to contact with the plurality of continuously meshing gears 31. In this embodiment, the reducer 30 can stir the insulating lubricating liquid 90 to contact with the gears 31 by stirring the gears 31, so as to achieve heat exchange and lubrication of the gears 31 and the shaft system.

[0130] For example, in the reducer 30, the gear 31 at the lowest position is partially immersed in the insulating lubricating liquid 90. In this way, when the reducer 30 is running, the gear 31 will stir the insulating lubricating liquid 90 and stir it to a higher position through a plurality of continuously meshed gears 31 to contact with a plurality of continuously meshed gears 31. Exemplarily, the gear 31 at the lowest position immersed in the insulating lubricating liquid 90 is the gear 31 at the connection input end.

[0131] like Figures 3 to 5 As shown, in some embodiments, the power pump system draws the insulating lubricating liquid 90 from the lower part of the cavity 10a to the higher part of the cavity 10a in a showering manner so as to evenly contact with a plurality of continuously meshing gears 31. In this embodiment, the insulating lubricating liquid 90 can be drawn to a higher part by the power pump system so as to be showered to contact with a plurality of continuously meshing gears 31 to achieve heat exchange and lubrication of the gears 31 and the shaft system. The structure of the power pump system can refer to the above.

[0132] Exemplarily, the liquid outlet channel 5112 is provided with a third liquid outlet, and the third liquid outlet extends along the first shell 511 to the space where the gear 31 and the bearing of the reducer 30 are installed. The insulating lubricating liquid 90 can flow through the liquid outlet channel 5112 and the third liquid outlet to the gear 31 and the bearing of the reducer 30, for example, the gear 31 connected to the motor shaft 21 and the bearing assembled on the circumference of the gear 31. When two liquid outlet channels 5112 are provided, the third liquid outlet is provided at the end of the other liquid outlet channel 5112. It can be understood that the third liquid outlet can be provided on another boss structure 78 that is mirror-symmetrical with the boss structure 78, and the two boss structures 78 can be mirror-symmetrical with respect to the plane passing through the axis of the first rotor shaft 521, and both are provided on the first shell 511; alternatively, the third liquid outlet can also be provided on a partition structure 781 (see FIG. 1 ) that is mirror-symmetrical with the boss structure 78. Fig.14 and Fig.15 ), the separation structure 781 and the boss structure 78 can be mirror-symmetrical relative to a plane passing through the axis of the first rotor shaft 521.

[0133] like Fig.12As shown, in other embodiments, the power pump system further includes a second spray structure 77, which is disposed adjacent to the reducer 30, and is used to spray the insulating lubricating liquid 90 output by the power pump system onto a plurality of continuously meshed gears 31. The insulating lubricating liquid 90 can be sprayed onto the reducer 30 through the second spray structure 77 to achieve heat exchange and lubrication of the reducer 30.

[0134] Exemplarily, the second spray structure 77 may refer to the aforementioned first spray structure 75 and will not be described in detail.

[0135] In some embodiments, the reducer 30 also includes multiple rotating shafts passing through multiple continuously meshing gears 31, multiple rotating bearings are arranged between the housing 10 and the multiple rotating shafts, and the power pump system is provided with multiple liquid outlets, and the multiple liquid outlets can deliver insulating lubricating liquid to lubricate the multiple rotating shafts and multiple rotating bearings. It can be understood that the housing 10 can be used as a rotating shaft system supporting the reducer 30 to ensure the stable rotation of the multiple rotating shafts through the rotating bearings, thereby ensuring the free rotation of the multiple continuously meshing gears 31. In this embodiment, the liquid outlet of the power pump system can pump the insulating lubricating liquid 90 to the multiple rotating shafts and multiple rotating bearings to achieve heat exchange and lubrication of the multiple rotating shafts and multiple rotating bearings, thereby ensuring the stable use of the reducer 30.

[0136] like Fig.13 As shown, in some embodiments, the electric propeller 100 further includes a power pump system and a liquid storage chamber 10c, and the insulating lubricating liquid 90 in the chamber 10a is pumped to the liquid storage chamber 10c along the liquid inlet path 501 and the liquid outlet path 502 by the power pump 50. The insulating lubricating liquid 90 can be pumped to the liquid storage chamber 10c by the power pump system, and the liquid storage chamber 10c can temporarily store the insulating lubricating liquid 90. When the electric propeller 100 is running, the insulating lubricating liquid 90 can be pumped to the liquid storage chamber 10c to reduce the liquid level of the insulating lubricating liquid 90 in the chamber 10a, so as to reduce the liquid level of the insulating lubricating liquid 90 that immerses the motor 20 and the reducer 30, thereby avoiding large oil stirring losses during the operation of the motor 20 and the reducer 30, ensuring the working efficiency of the motor 20 and the reducer 30, so as to make the propulsion effect of the electric propeller 100 better. Exemplarily, the tank body of the liquid storage chamber 10c is tilted and opened upward, so that when the liquid storage volume reaches a certain amount, the insulating lubricating liquid 90 in the liquid storage chamber will flow back into the chamber 10a. Of course, it is understandable that the insulating lubricating liquid 90 in the liquid storage chamber 10c can also allow the motor 20 and the reducer 30 to stably receive the overflowing insulating lubricating liquid 90, so as to prevent the pump inlet from being unable to absorb the coolant due to the electric propeller 100 pitching forward or backward or pitching forward or backward, thereby disconnecting the continuity of the cooling lubricating liquid diversion to the motor 20 and the reducer 30. Specifically, Fig.13In the embodiment, an overflow channel connected to the liquid storage chamber 10c may be provided at the portion of the housing 10 between the motor and the reducer, and the insulating lubricating liquid 90 overflowing from the liquid storage chamber 10c is outputted through the overflow channel. In this embodiment, the position of the liquid storage chamber 10c is not limited, and the liquid storage chamber 10c can be formed in the housing 10 and located at a position higher than the insulating lubricating liquid at the bottom of the housing 10.

[0137] In some embodiments, the liquid storage chamber 10c is provided at a position of the housing 10 near the motor 20. Part of the housing 10 can serve as the outer shell of the motor 20 to protect the motor 20. When the power pump system pumps the insulating lubricating liquid 90 to the motor 20, the insulating lubricating liquid 90 that realizes heat exchange with the motor 20 can flow to the liquid storage chamber 10c to temporarily store the insulating lubricating liquid 90, which not only realizes heat exchange with the motor 20 but also can store liquid. Exemplarily, the housing 10 near the motor 20 is formed by a slot structure that opens toward the motor 20 to form the liquid storage chamber.

[0138] In some other embodiments, the liquid storage chamber 10c is provided at a position of the power pump system near the reducer 30. The first shell 511 can be used as the outer shell of the reducer 30 to protect the reducer 30. When the power pump system pumps the insulating lubricating liquid 90 to the reducer 30, the insulating lubricating liquid 90 for heat exchange and lubrication of the reducer 30 can flow to the liquid storage chamber 10c to temporarily store the insulating lubricating liquid 90, which not only realizes heat exchange and lubrication with the reducer 30, but also can store liquid. Fig.16 As shown, illustratively, the first housing 511 is adjacent to the reducer 30 and is formed with a slot body structure that opens toward the reducer 30 to form the liquid storage chamber 10c. illustratively, the slot body of the liquid storage chamber 10c is inclinedly opened toward the gear 31 in the reducer 30, so that when the liquid storage volume reaches a certain amount, the insulating lubricating liquid 90 in the liquid storage chamber 10c will flow back into the chamber 10a.

[0139] like Fig.14 and Fig.15 As shown, in some embodiments, the housing 10 is provided with a partition structure 781 located between the motor 20 and the reducer 30, and the liquid storage chamber 10c is provided in the partition structure 781. When the power pump system pumps the insulating lubricating liquid 90 to the motor 20 and the reducer 30, the insulating lubricating liquid 90 before heat exchange with the reducer 30 can flow to the liquid storage chamber 10c of the partition structure 781 to temporarily store the insulating lubricating liquid 90, which not only realizes heat exchange and lubrication with the reducer 30, but also can store liquid.

[0140] Exemplarily, the partition structure 781 includes a partition groove formed on the shell 10 and a cover body, the cover body is fixedly connected to the shell 10 and covers the partition groove to form the above-mentioned liquid storage chamber 10c.

[0141] like Fig.14 and Fig.15As shown, exemplarily, the reducer 30 includes an input shaft 321, an intermediate shaft 322 and an output shaft 323, the input shaft 321 is connected to the motor shaft 21, the output shaft 323 is connected to the propeller 40, and the input shaft 321, the intermediate shaft 322 and the output shaft 323 are sequentially meshed through the gear 31 to achieve transmission, so that the torque output by the motor 20 is transmitted to the propeller 40 through the reducer 30. In this embodiment, the insulating lubricating liquid 90 flowing into the liquid storage chamber 10c of the partition structure 781 will gradually accumulate, and after reaching a certain height, it can flow from the side opening to the shaft system position of the intermediate shaft 322 to achieve heat exchange and lubrication of the shaft system of the intermediate shaft 322 in the reducer 30. In addition, the insulating lubricating liquid flowing out from the shaft system position of the intermediate shaft 322 can also pass through other shaft system positions to achieve heat exchange and lubrication of other positions in the reducer 30. It is understandable that the reducer 30 of the present application is not limited to the above-mentioned arrangement, for example, more transmission shafts can be arranged to achieve different speed adjustment. In addition, the insulating lubricating liquid 90 flowing to the liquid storage chamber 10c of the partition structure 781 of the present application is not limited to directly flowing to the shaft system position of the intermediate shaft 322, but can also directly flow to other shaft system positions to achieve heat exchange and lubrication for other positions in the reducer 30.

[0142] like Fig.13 and Fig.16 As shown, in other embodiments, the first housing 511 is provided with a boss structure 78, and the liquid storage chamber 10c is provided on the boss structure 78. When the power pump system pumps the insulating lubricating liquid 90 to the motor 20 and the reducer 30, the insulating lubricating liquid 90 before heat exchange with the motor 20 can flow to the liquid storage chamber 10c to temporarily store the insulating lubricating liquid 90, which not only realizes heat exchange with the motor 20, but also can store liquid.

[0143] Exemplarily, the boss structure 78 is disposed on the liquid outlet path 502 of the power pump system, that is, connected to the aforementioned third through hole.

[0144] like Figures 14 to 16 As shown, exemplarily, the boss structure 78 and the partition structure 781 are symmetrically arranged on both sides of the pump housing, wherein the boss structure 78 is fixedly connected to the pump housing and docked in the groove formed by the housing 10, and the partition structure 781 is formed on the inner wall of the housing 10. The liquid storage cavity 10c in the boss structure 78 and the liquid storage cavity 10c in the partition structure 781 can respectively receive the insulating lubricating liquid 90 pumped by the motor under forward and reverse rotation.

[0145] In other embodiments, Fig.13As shown, the liquid storage chamber 10c is provided in the above-water part of the shell 10. A pipeline is provided between the power pump system and the liquid storage chamber 10c, and the pipeline transmits the insulating lubricating liquid 90 pumped out from the liquid outlet 502 by the power pump system to the liquid storage chamber 10c, so that the above-water part of the liquid storage chamber 10c can store the insulating lubricating liquid 90. It can be understood that the above-water part of the liquid storage chamber 10c can be provided in the above-water part of the shell 10, and can also be provided in the shell bracket, plate, and box included in the above-water part of the electric propeller 100. In this way, the insulating lubricating liquid 90 can be sucked into the above-water liquid storage chamber 10c by the power pump system to store the insulating lubricating liquid 90, without occupying the space of the cavity 10a located in the underwater part, so that the space of the underwater part of the cavity 10a can be compact and reasonable.

[0146] Exemplarily, the liquid storage chamber 10c can be used for thermal coupling with other heat exchange devices 60 so as to perform heat exchange with other heat exchange devices 60 on water.

[0147] For example, Fig.13 As shown, a liquid collecting box is provided in the part of the cavity 10a that is located above the water, and the liquid storage cavity 10c is formed in the liquid collecting box to temporarily store the insulating lubricating liquid 90. For example, the liquid collecting box can be fixedly connected to the housing 10, or formed integrally with the housing 10.

[0148] The liquid storage chamber of the present application can be configured in one of the above-mentioned ways, or in a combination of the above-mentioned ways, without limitation.

[0149] like Fig.13 As shown, in some embodiments, the power pump system further includes a drain path 55, the drain path 55 is connected to the liquid storage chamber 10c, and the drain port of the drain path 55 is adjacent to the motor 20 and / or the reducer 30, and the insulating lubricating liquid 90 flowing out of the drain path 55 can flow to the motor 20 and / or the reducer 30. The insulating lubricating liquid 90 can flow to the motor 20 and / or the reducer 30 through the drain path 55, so as to exchange heat with the motor 20 and / or the reducer 30. In addition, the insulating lubricating liquid 90 flowing out of the drain path 55 will also flow to the bottom of the cavity 10a, so as to facilitate the circulation of the insulating lubricating liquid 90. In addition, when the electric propeller 100 is not in operation, the insulating lubricating liquid 90 in the liquid storage chamber 10c can also flow back to the bottom of the cavity 10a through the drain path 55, and the insulating lubricating liquid 90 at the bottom of the cavity 10a can immerse the motor 20 and the reducer 30 to protect the motor 20 and the reducer 30. It can be understood that when the electric thruster 100 is running, the rate at which the power pump 50 draws the insulating lubricating liquid 90 from the bottom of the cavity 10a to the liquid storage cavity 10c is greater than the drainage rate of the drainage path 55. In this way, it is ensured that when the electric thruster is running, the liquid storage cavity 10c can store liquid, and when it is not running, the insulating lubricating liquid 90 can flow back to the bottom of the cavity 10a.

[0150] like Fig.13 As shown, in some embodiments, the power pump system further includes a liquid discharge pump 551, and the liquid discharge pump 551 is disposed in the liquid discharge path. In this way, the liquid discharge rate can be controlled by the liquid discharge pump 551 to ensure that the liquid storage chamber 10c can store liquid when the electric propeller 100 is running, and discharge liquid when the electric propeller 100 is not running. In other embodiments, the liquid discharge path 55 may not be provided with a liquid discharge pump 551, and the liquid is automatically discharged only by gravity, as long as the pumping speed is greater than the discharge speed during operation.

[0151] like Fig.13 As shown, in some embodiments, the power pump system further includes an overflow path 56, which is connected to the liquid storage chamber 10c, and the position where the overflow path 56 is connected to the liquid storage chamber 10c is higher than the position where the drain path 55 is connected to the liquid storage chamber. In this way, after the liquid level of the liquid storage chamber 10c reaches a certain height, the insulating lubricating liquid 90 will flow out from the overflow path 56, thereby facilitating the insulating lubricating liquid 90 to effectively flow back to the motor 20 and / or the reducer 30.

[0152] For example, the insulating lubricating fluid 90 flowing out of the overflow path 56 can flow to the motor 20 and / or the reducer 30. Figure 4 , Figure 5 as well as Fig.16 The top of the liquid storage cavity 10c in the boss structure 78 is connected to the first spray structure 75. For another example, the side wall of the liquid storage cavity 10c in the partition structure 781 is connected to the bearing shaft system of the reducer 30.

[0153] like Fig.17As shown, in some embodiments, the liquid inlet 501 is provided with a liquid suction port 5011, and the position of the liquid suction port 5011 changes with the pitching or tilting of the shell 10. The pitching or tilting posture of the shell 10 is due to the fact that the electric propeller 100 needs to change the angle between the propulsion force and the horizontal direction due to the active or passive action of the water flow during the output of the propulsion force, so that the shell 10 will pitch forward or tilt forward or tilt forward or tilt backward due to the change of the angle of the propulsion force in the horizontal direction. When the electric propeller 100 pitches forward or tilts forward, the insulating lubricating liquid 90 in the cavity 10a will flow in a certain direction, so that there will be a certain position at the bottom of the cavity 10a without the insulating lubricating liquid 90. For example, when the electric propeller 100 pitches forward or tilts backward, the insulating lubricating liquid 90 will be concentrated on the side of the motor 20, while there is no insulating lubricating liquid 90 on the side of the reducer 30, so there is a possibility that the liquid suction port 5011 cannot absorb the insulating lubricating liquid. Since the position of the liquid suction port 5011 can change as the shell 10 tilts forward or backward, the liquid suction port 5011 can always be located at the position where the insulating lubricating liquid 90 is concentrated, thereby ensuring stable liquid suction of the power pump system to avoid the insulating lubricating liquid 90 in the cavity 10a from being too high, which would cause high oil stirring loss of the motor 20 and / or the reducer 30. In addition, since the liquid can be stably sucked, when the insulating lubricating liquid 90 is circulated, the insulating lubricating liquid 90 can be ensured to circulate continuously.

[0154] like Fig.17 As shown, illustratively, the liquid inlet circuit 501 includes a liquid inlet hose 5012 and a counterweight 5013, the liquid inlet hose 5012 is connected to the power pump 50, the counterweight 5013 is arranged at the end of the liquid inlet hose 5012, and the liquid suction port 5011 is arranged on the counterweight 5013, and the counterweight 5013 moves with the forward and backward pitch or the forward and backward pitch of the housing 10. When the housing 10 pitches forward and backward or pitches forward and backward, the insulating lubricating liquid 90 will flow to a certain area under the action of gravity, and similarly, the counterweight 5013 will also swing to the area where the insulating lubricating liquid 90 is concentrated under the action of gravity, so that the power pump 50 can suck the insulating lubricating liquid 90 at the bottom of the cavity 10a through the liquid suction port 5011.

[0155] like Fig.18As shown, in some other embodiments, multiple power pump systems are provided, and the multiple power pump systems can draw the insulating lubricating liquid 90 from multiple positions of the cavity 10a. In this way, the multiple power pump systems can draw the insulating lubricating liquid 90 from different positions of the cavity 10a, respectively. Regardless of whether the electric pusher pitches forward or backward or pitches forward or backward, at least one of the multiple power pump systems can draw the insulating lubricating liquid 90 in the cavity 10a, so as to avoid the insulating lubricating liquid 90 in the cavity 10a from being too high in liquid level, which leads to high oil stirring loss of the motor 20 and / or the reducer 30, and ensure the circulation of the insulating lubricating liquid 90, so as to continuously realize heat exchange of the motor 20 and / or the reducer 30.

[0156] like Fig.18 As shown, illustratively, two power pump systems are provided, and the liquid inlet paths 501 of the two power pump systems are respectively provided at a position of the lower part of the cavity 10a adjacent to the propeller 40 and a position of the lower part of the cavity 10a away from the propeller 40. In this way, when the electric propeller 100 pitches forward or backward or pitches forward or backward, at least one power pump system can pump the insulating lubricating liquid 90 at the bottom of the cavity 10a to prevent the liquid level of the insulating lubricating liquid 90 in the cavity 10a from being too high and to achieve stable circulation of the insulating lubricating liquid 90. It can be understood that since the electric propeller 100 is slender in the direction from the position of the propeller 40 to the position far from the propeller 40, when the electric propeller 100 pitches forward and backward, that is, the position of the electric propeller 100 close to the propeller 40 is higher than the position far from the propeller 40, the insulating lubricating liquid 90 will be obviously concentrated, and the height of the insulating lubricating liquid 90 submerging the motor 20 may increase. When the electric propeller 100 pitches forward and backward, that is, the position of the electric propeller 100 close to the propeller 40 is lower than the position far from the propeller 40, the insulating lubricating liquid 90 will accumulate on the side of the reducer 30, so that the motor 20 will not be immersed because it is higher than the reducer 30. Therefore, only providing a power pump system at the above two positions can ensure stable suction of the insulating lubricating liquid 90 under any circumstances.

[0157] like Fig.19 As shown, in some other embodiments, a plurality of liquid inlet paths 501 are provided, and the power pump 50 is respectively connected to different positions of the cavity 10a through the plurality of liquid inlet paths 501. In this way, the plurality of liquid inlet paths 501 can respectively draw the insulating lubricating liquid 90 from different positions of the cavity 10a. Regardless of whether the electric pusher pitches forward or backward or pitches forward or backward, at least one of the plurality of liquid inlet paths 501 can draw the insulating lubricating liquid 90 in the cavity 10a, so as to avoid the insulating lubricating liquid 90 in the cavity 10a from being too high in liquid level, which results in a high oil stirring loss of the motor 20 and / or the reducer 30, and ensure the circulation of the insulating lubricating liquid 90, so as to continuously realize heat exchange for the motor 20 and / or the reducer 30.

[0158] like Fig.19 As shown, illustratively, two liquid inlet paths 501 are provided, and the two liquid inlet paths 501 are respectively provided at a position of the lower part of the cavity 10a adjacent to the propeller 40 and a position of the lower part of the cavity 10a away from the propeller 40. In this way, when the electric propeller 100 pitches forward or backward or pitches forward or backward, at least one liquid inlet path 501 can suck the insulating lubricating liquid 90 at the bottom of the cavity 10a to prevent the liquid level of the insulating lubricating liquid 90 in the cavity 10a from being too high and to achieve stable circulation of the insulating lubricating liquid 90. It can be understood that since the electric propeller 100 is slender in the direction from the position of the propeller 40 to the position far from the propeller 40, when the electric propeller 100 pitches forward and backward, the insulating lubricating liquid 90 will be obviously concentrated, and the height of the insulating lubricating liquid 90 submerging the motor 20 may increase. When the electric propeller 100 pitches forward and backward, the insulating lubricating liquid 90 will accumulate on the side of the reducer 30, so that the motor 20 will not be immersed because it is higher than the reducer 30. Therefore, only providing the liquid inlet 501 at the above two positions can ensure stable suction of the insulating lubricating liquid 90 under any circumstances.

[0159] like Fig. 20 As shown, in some other embodiments, the liquid inlet 501 is provided with a plurality of liquid suction ports 5011, and the power pump 50 is respectively connected to different positions of the cavity 10a through the plurality of liquid suction ports 5011. In this way, the plurality of liquid suction ports 5011 can respectively draw the insulating lubricating liquid 90 from different positions of the cavity 10a, and no matter whether the electric pusher is tilted forward or backward or tilted forward or backward, at least one of the plurality of liquid suction ports 5011 can draw the insulating lubricating liquid 90 in the cavity 10a, so as to avoid the insulating lubricating liquid 90 in the cavity 10a from being too high in liquid level, which leads to high oil stirring loss of the motor 20 and / or the reducer 30, and the circulation of the insulating lubricating liquid 90 can be ensured to continuously realize heat exchange of the motor 20 and / or the reducer 30.

[0160] like Fig. 20As shown, illustratively, two liquid suction ports 5011 are provided, and the two liquid suction ports 5011 are respectively provided at a position of the lower part of the cavity 10a adjacent to the propeller 40 and a position of the lower part of the cavity 10a away from the propeller 40. In this way, when the electric propeller 100 pitches forward or backward or pitches forward or backward, at least one liquid suction port 5011 can suck the insulating lubricating liquid 90 at the bottom of the cavity 10a to prevent the liquid level of the insulating lubricating liquid 90 in the cavity 10a from being too high and to achieve stable circulation of the insulating lubricating liquid 90. It can be understood that since the electric propeller 100 is slender in the direction from the position of the propeller 40 to the position far from the propeller 40, when the electric propeller 100 pitches forward and backward, the insulating lubricating liquid 90 will be obviously concentrated, and the height of the insulating lubricating liquid 90 submerging the motor may increase. When the electric propeller 100 pitches forward and backward, the insulating lubricating liquid 90 will accumulate on the side of the reducer 30, so that the motor 20 will not be immersed because it is higher than the reducer 30. Therefore, only providing the suction port 5011 at the above two positions can ensure stable suction of the insulating lubricating liquid 90 under any circumstances.

[0161] like Figures 21 to 23 As shown, in some embodiments, a liquid collecting tank 10d for containing insulating lubricating liquid 90 is provided at the bottom of the cavity 10a. The liquid collecting tank 10d can reduce the liquid level of the insulating lubricating liquid 90 at the bottom of the cavity 10a to prevent excessive oil stirring during operation of the motor 20 or the reducer 30, thereby ensuring stable operation of the motor 20 and the reducer 30.

[0162] like Fig.21 and Fig.23 As shown, in some embodiments, the power pump 50 is connected to the liquid collecting tank 10d through the liquid inlet 501, and the insulating lubricating liquid 90 in the liquid collecting tank 10d can flow to the high position of the cavity 10a through the liquid outlet 502. In this way, the liquid level of the insulating lubricating liquid 90 in the cavity 10a can be further reduced, and the oil stirring loss can be reduced by reducing the part of the motor 20 and the insulating lubricating liquid 90 immersed, ensuring the working efficiency of the motor 20 and the reducer 30, so that the propulsion effect of the electric propeller 100 is better. In addition, since the liquid collecting tank 10d is located at the bottom of the cavity 10a, the insulating lubricating liquid 90 will be collected in the liquid collecting tank 10d. When the electric propeller 100 is working, no matter whether the electric propeller 100 pitches forward or backward or pitches forward or backward, the insulating lubricating liquid 90 in the liquid collecting tank 10d will not flow out. Therefore, when the power pump system sucks the insulating lubricating liquid 90 in the liquid collecting tank 10d, the stable circulation of the insulating lubricating liquid 90 can be achieved.

[0163] Exemplarily, the power pump 50 is connected to the bottom of the liquid collecting tank 10d through the liquid inlet 501. This ensures that the liquid suction port 5011 of the liquid inlet 501 is always located in the insulating lubricating liquid 90, ensuring the stability of the power pump system's suction in any state.

[0164] like Fig.21 and Fig. 22 As shown, in some embodiments, the cross-sectional area of ​​the liquid collecting tank 10d gradually increases along the direction from the bottom of the liquid collecting tank 10d to the cavity 10a. In this way, it can be ensured that the insulating lubricating liquid 90 is present at the bottom of the liquid collecting tank in any state, and the liquid suction port 5011 of the power pump system is located at the lowest position of the liquid collecting tank 10d, so that the liquid suction port 5011 can always suck the insulating lubricating liquid 90. Since the liquid level of the insulating lubricating liquid 90 in the liquid collecting tank 10d is also high, when sucking by the power pump system, the insulating lubricating liquid 90 can also be ensured to be stably sucked. In addition, the housing 10 does not need a large volume structure at the bottom of the liquid collecting tank 10d, so the overall volume structure of the housing 10 can be simplified. Of course, in other embodiments, the cross-sectional area of ​​the liquid collecting tank 10d gradually decreases along the direction from the bottom of the liquid collecting tank 10d to the cavity 10a, so that the liquid collecting tank 10d can accommodate more insulating lubricating liquid 90, and further reduce the liquid level height at the bottom of the cavity 10a.

[0165] like Fig.21 As shown, in some embodiments, the first section 111 and the second section 112 are provided at the lower part of the cavity 10a, and a connecting surface 113 connected between the first section 111 and the second section 112, there is a step difference between the first section 111 and the second section 112, the first section 111 is lower than the second section 112, and the collecting groove 10d is formed between the first section 111 and the connecting surface 113. It can be understood that in this embodiment, the bottom of the collecting groove 10d formed is the first section 111, which can contain the insulating lubricating liquid 90 to prevent the insulating lubricating liquid 90 at the bottom of the cavity 10a from being too high. In this embodiment, the first section 111 and the second section 112 are respectively the cross-sectional structures of the housing for adapting and installing the reducer 30 and the motor 20, which can not only stably assemble the motor 20 and the reducer 30, but also form the collecting groove 10d to prevent the insulating lubricating liquid 90 at the motor 20 from being too high, and make full use of the space of the housing 10.

[0166] like Fig. 22As shown, in another embodiment, the housing 10 is provided with a guide fin 11, and the liquid collecting tank 10d is provided in the guide fin 11, and the shape of the liquid collecting tank 10d is adapted to the shape of the guide fin 11. It can be understood that in this embodiment, the shape of the formed liquid collecting tank 10d is adapted to the guide fin 11, so that it can be ensured that the insulating lubricating liquid 90 is present at the bottom of the liquid collecting tank 10d in any state, and the liquid collecting tank 10d always has a lowest point, so that the liquid suction port 5011 placed at the lowest point can always ensure stable suction of the cooling insulating lubricating liquid to avoid excessive immersion of the motor 20, and the liquid level of the insulating lubricating liquid 90 in the liquid collecting tank 10d is also high, and when sucked by the power pump system, the stable suction of the insulating lubricating liquid 90 can also be ensured. Furthermore, when forming the liquid collecting tank 10d, there is no need to add any additional structure to the shell 10. The liquid collecting tank 10d is located at the guide fin 11 provided on the shell 10 itself, thereby reducing the manufacturing cost and making the structure of the entire electric propeller 100 more reasonable.

[0167] like Fig. 22 As shown, illustratively, the bottom of the liquid collecting groove 10d is pointed, and the cross-sectional area of ​​the liquid collecting groove 10d gradually increases along the direction from the bottom of the liquid collecting groove 10d to the cavity 10a.

[0168] like Fig. 22 and Fig.23 As shown, illustratively, the depth of the liquid collecting tank 10d is greater than the width of the liquid collecting tank 10d along the direction of the motor shaft 21. It can be understood that such a structure ensures that no matter whether the housing 10 is tilted forward or backward or tilted forward or backward, the distance between the liquid level of the insulating lubricating liquid 90 and the liquid suction port 5011 is always kept relatively far, and the liquid level will not change to outside the liquid suction port 5011, so that too much part of the motor 20 and / or the reducer 30 will not be immersed, avoiding large oil stirring loss in the motor 20 and / or the reducer 30 under any circumstances. When sucking through the power pump system, the stable suction of the insulating lubricating liquid 90 can also be ensured.

[0169] like Fig. 22 and Fig.23 As shown, Fig.23 for Fig. 22Schematic diagram of the interior of the shell 10 from a top view. Exemplarily, the width of the liquid collecting tank 10d along the direction of the motor shaft 21 is greater than its width perpendicular to the direction of the motor shaft 21. Such a structure allows the liquid collecting tank 10d to be an elongated structure along the direction of the motor shaft 21. On the one hand, it allows the insulating lubricating liquid 90 at the bottom of the cavity 10a to flow to the liquid collecting tank 10d. On the other hand, whether the shell 10 is tilted forward or backward, the insulating lubricating liquid 90 can be concentrated in the liquid collecting tank, which can adapt to the bottom structure of the cavity, that is, the elongated electric propeller 100, so that the liquid collecting tank 10d can accommodate more insulating lubricating liquid, so that too much part of the motor 20 and / or the reducer 30 will not be immersed, avoiding large oil stirring losses in the motor 20 and / or the reducer 30 under any circumstances. When pumping through the power pump system, stable suction of the insulating lubricating liquid 90 can also be ensured.

[0170] like Fig.21 and Fig. 22 As shown, in some embodiments, when the electric propeller 100 is in a state of normal output of propulsion, that is, the electric propeller 100 pitches forward or backward or pitches forward or backward by adjusting the propulsion pitch angle, an inclined guide surface is arranged around the opening of the liquid collecting groove 10d at the bottom of the cavity 10a, and the inclined guide surface can quickly guide the insulating cooling lubricant at the bottom of the cavity 10a into the liquid collecting groove 10d. In this way, the insulating lubricant 90 at the bottom of the cavity 10a can flow to the liquid collecting groove 10d by gravity, avoiding the insulating lubricant 90 from being deposited at a certain position at the bottom of the cavity 10a.

[0171] like Figures 5 to 7 As shown, in some embodiments, the electric propeller 100 further includes a filter 71 for filtering the insulating lubricating liquid 90, and the filter 71 is disposed in the liquid inlet 501. The insulating lubricating liquid 90 sucked by the power pump system can be filtered by the filter 71 to prevent impurities from entering the circulation and affecting the circulation efficiency of the insulating lubricating liquid 90, and to prevent the heat exchange effect of the insulating lubricating liquid 90 from being reduced due to impurities.

[0172] Exemplarily, the filter 71 is provided with a magnetic member for absorbing magnetically absorbable impurities of the insulating lubricating liquid 90. In this way, the magnetically absorbable impurities can be further prevented from entering the circulation. For example, the magnetic member is disposed adjacent to the outer wall of the filter 71, and when the insulating lubricating liquid 90 enters the filter 71, the magnetically absorbable impurities in the insulating lubricating liquid 90 can be absorbed.

[0173] Exemplarily, the filter 71 is an oil suction filter, which can prevent the suction of pollutants and impurities, ensure the cleanliness of the power pump system, and ensure the stable circulation of the insulating lubricating fluid 90.

[0174] Exemplarily, the filter 71 is a pressure filter. The pressure filter can achieve different filtering effects according to the different filter media filled. For example, when filled with activated carbon, it can adsorb pigments, organic matter, residual chlorine, colloids, etc. in the insulating lubricating liquid 90 to ensure the stable circulation of the insulating lubricating liquid 90.

[0175] like Figure 6 As shown, in some embodiments, the filter 71 is detachably disposed in the liquid inlet 501. In this way, the filter 71 can be removed as needed to facilitate replacement of a new filter 71 or cleaning the filter 71, so as to effectively filter the insulating lubricating liquid 90 entering the circulation. Exemplarily, the first housing 511 is provided with a mounting groove for mounting the filter 71, and the filter 71 is detachably mounted in the mounting groove.

[0176] In other embodiments, the filter 71 is non-detachably disposed in the liquid inlet 501. In this way, it is ensured that the power pump system can stably pump liquid, and the insulating lubricating liquid 90 entering the liquid inlet 501 will pass through the filter 71 to achieve effective filtering of the insulating lubricating liquid 90. Exemplarily, the liquid inlet 501 can be detachably connected to the power pump 50, and the liquid inlet 501 can be directly removed to facilitate replacement or cleaning of the filter 71.

[0177] like Figure 1 and Figure 4 As shown, in some embodiments, the cavity 10a is a sealed cavity. Setting the cavity 10a as a sealed cavity can prevent external impurities from entering the cavity 10a and contaminating the insulating lubricating liquid 90, and can also prevent the insulating lubricating liquid 90 from leaking. In addition, the stability of the air pressure in the cavity 10a can be ensured, so that the insulating lubricating liquid 90 can be stably circulated when the power pump system pumps the liquid.

[0178] like Fig.24 As shown, in some embodiments, the electric propeller 100 further includes a first liquid exchange valve 121, the housing 10 is provided with a first liquid exchange port for being located underwater, the first liquid exchange valve 121 is provided at the first liquid exchange port, and the first liquid exchange valve 121 is used to open or close the first liquid exchange port. The user can open the first liquid exchange valve 121 as needed to replace the insulating lubricating liquid 90 in the cavity 10a to ensure a better heat dissipation effect of the insulating lubricating liquid 90, so that the electric propeller 100 can operate stably. Since the first liquid exchange port is located underwater, efficient replacement of the insulating lubricating liquid 90 can be achieved.

[0179] like Fig.25As shown, in other embodiments, the electric propeller 100 also includes a pipette 79, and the housing 10 is provided with a second liquid exchange port for being located above water. One end of the pipette 79 extends to the cavity 10a, and the other end passes through the second liquid exchange port. The end of the pipette 79 passing through the second liquid exchange port is used to dock with the liquid exchange pump. The user can replace the insulating lubricating liquid 90 in the cavity 10a in time on water through the pipette 79 to ensure a better heat dissipation effect of the insulating lubricating liquid 90, so that the electric propeller 100 can operate stably. The second liquid exchange port is set above water, and the insulating lubricating liquid 90 can be replaced even if the electric propeller 100 is located underwater, which is more convenient to operate. The pipette 79 can be adjusted according to the different liquid level heights of the insulating lubricating liquid 90 in the cavity 10a, so that the liquid can be stably pumped when the liquid is changed.

[0180] like Fig.26 As shown, in some other embodiments, the housing 10 is provided with a fluid exchange channel 10e, one end of which is connected to the bottom of the cavity 10a, and the other end of the fluid exchange channel 10e is arranged above the water of the housing 10. The user can replace the insulating lubricating fluid 90 in the cavity 10a in time on the water through the fluid exchange channel 10e to ensure a better heat dissipation effect of the insulating lubricating fluid 90, so that the electric propeller 100 can operate stably. Since the fluid exchange channel 10e is formed by the housing 10, it can ensure that the structure inside the housing 10 is compact and reasonable. In addition, when changing the fluid, suction and fluid exchange can be achieved by directly connecting the end of the fluid exchange channel 10e located above the water of the housing 10.

[0181] It is understandable that the end of the liquid exchange channel 10e located in the cavity 10a needs to be immersed in the insulating lubricating liquid 90 to facilitate liquid exchange. For example, the end of the liquid exchange channel 10e located in the cavity 10a is formed at the bottom of the cavity 10a, and when the liquid collection tank 10d is provided, it can be located at the bottom of the liquid collection tank.

[0182] like Fig. 27 As shown, in some embodiments, the housing 10 is provided with a liquid exchange channel 10e, one end of the liquid exchange channel 10e is connected to the bottom of the cavity 10a, the other end of the liquid exchange channel 10e is connected to the second liquid exchange port, and the liquid suction tube 79 is arranged in the liquid exchange channel. It can be understood that the liquid suction tube 79 arranged in the liquid exchange channel 10e is also arranged along the extension 10e of the liquid exchange channel, so that the position of the liquid suction tube 79 can be limited to avoid the part of the liquid suction tube 79 placed in the cavity 10a from occupying other spaces of the cavity 10a, so that the overall structure can be ensured to be compact and reasonable. In addition, since one end of the liquid exchange channel 10e is connected to the bottom of the cavity 10a, the suction port of the liquid suction tube 79 can also be located at the bottom of the cavity 10a, so that at least most of the insulating lubricating liquid 90 in the cavity 10a can be sucked out.

[0183] Exemplarily, the fluid exchange channel 10e is vertically extended from the second fluid exchange port to the bottom of the cavity 10a. Such a fluid exchange channel 10e has no bends, which facilitates suction and fluid exchange.

[0184] like Figures 25 to 27 As shown in FIG. 1 and FIG. 2 , in some embodiments, the electric propeller 100 further includes a second liquid exchange valve 122, which is detachably connected to the second liquid exchange port to close the second liquid exchange port or open the second liquid exchange port. When liquid exchange is not required, the second liquid exchange valve 122 can close the second liquid exchange port to make the cavity 10a in a closed state, thereby improving the heat exchange effect of the insulating lubricating liquid 90 in the cavity 10a. Exemplarily, the second liquid exchange valve 122 is provided with a rubber plug, which is embedded in the second liquid exchange port to achieve a detachable connection.

[0185] In some other embodiments, the second liquid exchange valve 122 is hingedly connected to the second liquid exchange port, and the liquid exchange valve is rotated to close the second liquid exchange port or open the second liquid exchange port.

[0186] like Figure 4 and Fig.28 As shown, an electric propeller 100 provided in an embodiment of the present application includes a housing 10 , a circulation flow path 80 , a power pump 50 , a motor 20 , a propeller 40 and a heat exchange device 60 .

[0187] The housing 10 is provided with a cavity 10a for being at least partially located underwater and a heat exchange cavity 10b for being at least partially located above water. The cavity 10a is used to contain an insulating lubricating liquid 90, and the insulating lubricating liquid 90 can exchange heat with the housing 10. The circulation path 80 is circulatedly connected to the cavity 10a and the heat exchange cavity 10b. The power pump 50 is arranged on the flow path of the insulating lubricating liquid 90 to drive the insulating lubricating liquid 90 to circulate in the cavity 10a, the circulation path 80 and the heat exchange cavity 10b. The motor 20 is arranged in the underwater part of the cavity 10a and can exchange heat with the insulating lubricating liquid 90 in the cavity 10a. The propeller 40 is connected to the motor 20 via a shaft system. The propeller 40 is located outside the housing 10 and is driven to rotate by the motor 20. The heat exchange device 60 is thermally coupled with the heat exchange cavity 10b and exchanges heat with the insulating lubricating liquid 90 in the heat exchange cavity 10b.

[0188] It is understandable that, since the motor 20 is disposed in the underwater part of the cavity 10a, the motor 20 can exchange heat with the insulating lubricating liquid 90 in the cavity 10a, and this heat exchange can be achieved by diverting the insulating lubricating liquid 90 to the motor 20 through the power pump 50, or by partially immersing the motor 20 in the insulating lubricating liquid 90. The structure of the motor 20 can refer to the above. The structure of the power pump 50 diverting the insulating lubricating liquid 90 to the motor 20 can refer to the above.

[0189] It is understandable that the heat exchange device 60 can achieve heat exchange with the insulating lubricating fluid 90. This heat exchange can be to transfer heat to the insulating lubricating fluid 90 or to absorb the heat of the insulating lubricating fluid 90, as long as the normal operation of the heat exchange device 60 can be ensured after the heat exchange.

[0190] In the electric propeller 100 provided in the embodiment of the present application, since the motor 20 is arranged in the underwater part of the cavity 10a, the insulating lubricating liquid 90 can also perform heat exchange with the motor 20 to ensure the normal working temperature of the motor 20, and the insulating lubricating liquid 90 in the cavity 10a can be sucked to the heat exchange cavity 10b by the power pump 50, and the insulating lubricating liquid 90 can also perform heat exchange with the heat exchange device 60 to ensure the normal working temperature of the heat exchange device 60. In addition, the insulating lubricating liquid 90 in the cavity 10a where the shell 10 is located underwater can perform heat exchange with the water outside the shell 10 to dissipate the heat absorbed by the insulating lubricating liquid 90. In this way, heat exchange is continuously performed with the motor 20 and the heat exchange device 60 to ensure the normal operation of the motor 20 and the heat exchange device 60, thereby ensuring the stable operation of the electric propeller 100. In addition, the electric propeller 100 provided in the embodiment of the present application does not need to add an additional heat dissipation device, does not increase the weight of the electric propeller 100, has low cost and excellent heat dissipation effect.

[0191] In some embodiments, the electric propeller 100 further includes a reducer 30 disposed in the cavity 10a. The reducer 30 is located between the motor 20 and the propeller 40, and can reduce the rotation of the propeller 40. The reducer 30 can also exchange heat with the insulating lubricating liquid 90 in the cavity 10a. The structure of the reducer 30 can refer to the above. The structure of the power pump 50 that guides the insulating lubricating liquid 90 to the reducer 30 can refer to the above.

[0192] like Figure 4 and Fig.28 As shown, in some embodiments, the circulating flow path 80 is connected to the motor 20, and the power pump 50 can draw part of the insulating lubricating liquid 90 of the circulating flow path 80 to the motor 20. In this way, the insulating lubricating liquid 90 flowing to the motor 20 can exchange heat with the motor 20, so as to quickly dissipate heat from the motor 20. In addition, when the reducer 30 is provided, the power pump 50 can also draw part of the insulating lubricating liquid 90 of the circulating flow path 80 to the reducer 30, so as to exchange heat and lubricate with the reducer 30. The specific structure can be referred to above.

[0193] like Fig.28As shown, in some embodiments, the circulation flow path 80 includes a circulation outlet 81 and a circulation return 82, and the circulation outlet 81 and the circulation return 82 are both connected to the cavity 10a and the heat exchange cavity 10b. Under the suction of the power pump 50, the insulating lubricating liquid 90 can flow along the circulation outlet 81, the heat exchange cavity 10b and the circulation return 82 in sequence, so that the heat exchange device 60 can exchange heat with the insulating lubricating liquid 90.

[0194] exist Figure 4 In the embodiment of the invention, for example, the circulating liquid outlet path 81 is composed of a flow channel opened in the shell 10, a pipe connected to the flow channel in the shell 10, and a chamber 10a, and the circulating liquid return path 82 is also composed of a flow channel in the shell 10, a pipe connected to the flow channel in the shell 10, and a chamber 10a. Figure 4 , Fig.17 and Fig.28 The circulating liquid outlet path 81 includes a liquid inlet path 501, a liquid outlet path 502, a guide channel 721b and a pipeline connected in sequence. The circulating liquid outlet path 82 is composed of a reflux channel 10f formed by the shell 10, and the reflux channel 10f extends from top to bottom into the cavity 10a.

[0195] like Fig.28 As shown, exemplarily, the power pump 50 is arranged on the circulating liquid outlet 81. The power pump 50 is an electronic pump. By providing current and control signals to the power pump 50, the start and stop of the power pump 50 are controlled, and the power pump 50 pumps the insulating lubricating liquid 90. The insulating lubricating liquid 90 flows to the circulating liquid outlet 81, and flows to the heat exchange cavity 10b and the circulating liquid return path 82 through the power pump 50 to realize the circulating flow of the insulating lubricating liquid 90. It can be understood that based on the aforementioned embodiment, the power pump 50 can also be a mechanical pump, which receives the torque of the motor 20 and is arranged on the circulating liquid outlet 81.

[0196] like Fig.29 As shown, illustratively, with Fig.28 The embodiments are substantially the same, except that the power pump 50 is disposed in the circulating liquid return path 82. The insulating lubricating liquid 90 is pumped by the power pump 50 to flow to the circulating liquid outlet path 81, and passes through the heat exchange cavity 10b, and circulates along the power pump 50 and the circulating liquid return path 82 to realize the insulating lubricating liquid 90.

[0197] like Fig.30 As shown, illustratively, with Fig.28 The embodiments are substantially the same, except that the power pump 50 is disposed in the cavity 10a. For example, the liquid inlet 501 of the power pump 50 is connected to the cavity 10a, and the liquid outlet 502 is connected to the circulating liquid outlet 81, so as to pump the insulating lubricating liquid 90 in the cavity 10a and realize the circulating flow of the insulating lubricating liquid 90.

[0198] like Fig.30 As shown, illustratively, with Fig.28 The embodiments are substantially the same, except that the power pump 50 is disposed in the heat exchange cavity 10b. For example, the liquid inlet 501 of the power pump 50 is connected to the circulating liquid outlet 81 to pump the insulating lubricating liquid 90 in the cavity 10a. The insulating lubricating liquid 90 can flow into the heat exchange cavity 10b along the circulating liquid outlet 81, and then circulate through the circulating liquid return 82.

[0199] In some embodiments, multiple power pumps 50 are provided, and the multiple power pumps 50 can be provided in the circulating liquid outlet 81, the circulating liquid return path 82, the cavity 10a or the heat exchange cavity 10b as required. For example, two power pumps 50 are provided, and the two power pumps 50 are respectively provided in the circulating liquid outlet 81 and the circulating liquid return path 82. In this way, the stable circulation of the insulating lubricating liquid 90 can be ensured.

[0200] like Figure 4 As shown, in some embodiments, the power pump 50 is a mechanical pump. The pumping is achieved by mechanical movement. For example, the power pump 50 includes a cycloid pump, a gear pump or a vane pump. The specific structure of the power pump 50 as a cycloid pump can be referred to above. The power pump 50 is arranged in the cavity 10a, and the liquid outlet 502 is connected to the circulating liquid outlet 81 to achieve the circulation of the insulating lubricating liquid 90.

[0201] In some other embodiments, the power pump 50 is an electronic pump, and the power pump 50 pumps fluid by electronic control.

[0202] like Figure 4 and Fig.28 As shown, in some embodiments, the housing 10 is provided with a reflux channel 10f extending from the heat exchange cavity 10b to the cavity 10a, and the reflux channel 10f forms a circulating return liquid path 82. The reflux channel 10f is formed on the inner wall of the housing 10, and does not occupy other spaces of the cavity 10a due to the arrangement of the pipeline, and the structure is more compact. In other embodiments, the circulating return liquid path 82 can also be formed by arranging a pipeline connecting the heat exchange cavity 10b and the cavity 10a. Exemplarily, the reflux channel 10f is arranged to extend from top to bottom, and the insulating lubricating liquid 90 flowing out of the heat exchange cavity 10b can flow to the bottom of the cavity 10a along the reflux channel 10f by gravity.

[0203] like Figure 4 As shown, exemplarily, the side wall of the return channel 10f is also provided with a return branch channel 10g, and the return branch channel 10g is located above the reducer 30, so that at least part of the insulating lubricating fluid 90 can flow along the return branch channel 10g to the reducer 30 to achieve heat exchange with the reducer 30.

[0204] like Fig.32As shown, in some embodiments, the circulating liquid outlet 81 and / or the circulating liquid return 82 are provided with a control valve 74 to control the amount of liquid outlet and / or liquid return. The amount of insulating lubricating liquid 90 in the cavity 10a and the heat exchange cavity 10b can be controlled by the provided control valve 74 to ensure the stable circulation of the insulating lubricating liquid 90. In addition, when the electric propeller 100 stops running, the insulating lubricating liquid 90 can be temporarily stored in the heat exchange cavity 10b by the control valve 74 provided in the circulating liquid return 82 to avoid the accumulation of a large amount of insulating lubricating liquid 90 at the bottom of the cavity 10a, resulting in an excessively large oil stirring ratio during operation of the motor 20 or the reducer 30.

[0205] Exemplarily, the control valve 74 includes any one or a combination of a pressure regulating valve, a solenoid valve, a switch valve, a three-way valve, and a one-way valve 741. The pressure regulating valve controls the flow rate by driving the valve to change the cross-sectional area between the valve core and the valve seat. The solenoid valve controls the flow rate by electromagnetic control. The switch valve conducts and cuts off the insulating lubricating liquid 90 by switching, and it can be a pneumatic switch valve or an electric switch valve. The three-way valve can control the flow rate by diverting. The one-way valve 741 can limit the one-way flow of the insulating lubricating liquid 90, for example, so that the insulating lubricating liquid 90 can only flow along the circulating liquid outlet 81, the heat exchange chamber 10b and the circulating liquid return 82.

[0206] like Fig.32 As shown, illustratively, a one-way valve 741 is provided on the circulation flow path 80. When the electric propeller 100 stops running, the one-way valve 741 is closed, and the insulating lubricating liquid 90 is stored in the heat exchange cavity 10b, so that when the electric propeller 100 is started next time, the heat exchange cavity 10b can be cooled immediately because the insulating lubricating liquid 90 is stored in the heat exchange cavity 10b, without having to wait for a certain amount of insulating lubricating liquid 90 to be pumped into the heat exchange cavity 10b before cooling. When the electric propeller 100 is running, the one-way valve 741 is opened, and the insulating lubricating liquid 90 circulates, so that when the electric propeller 100 starts running, the heat exchange device 60 can also be heat exchanged to ensure the normal operation of the heat exchange device 60. Of course, in other embodiments, the one-way valve 741 can also be provided on both the circulating liquid outlet 81 and the circulating liquid return 82. As an implementation example, the heat exchange device 60 is a drive module 61, which drives and controls the motor 20. When the electric propeller 100 stops running, the one-way valve 741 is closed, so that the insulating lubricating fluid can be stored in the heat exchange chamber 10b. Then, when the electric propeller 100 starts, the insulating lubricating fluid stored in the heat exchange chamber 10b can be used to immediately cool the drive module 61, thereby reducing the waiting time and reducing the failure rate of the drive module 61.

[0207] like Fig.33As shown, in some embodiments, the housing 10 is provided with a plurality of heat exchange chambers 10b, and a plurality of heat exchange devices 60 are provided, and the plurality of heat exchange devices 60 correspond to the plurality of heat exchange chambers 10b one by one. In this way, heat can be exchanged for the plurality of heat exchange devices 60. It can be understood that the plurality of heat exchange chambers 10b can be arranged in series or in parallel. The plurality of heat exchange devices 60 can be respectively a driving control circuit board of a steering actuator, a driving control circuit board of a tilting actuator, a built-in battery of the fuselage, and other devices.

[0208] In addition, the control valve 74 is used to control the transmission of the insulating lubricating liquid 90 between the cavity 10a and the multiple heat exchange cavities 10b, and is also used to control the transmission of the insulating lubricating liquid 90 between the multiple heat exchange cavities 10b. In the case of multiple heat exchange cavities 10b, the control valve 74 can control the flow of the insulating lubricating liquid 90 in the circulating liquid outlet 81 and the circulating liquid return 82, and can also be used to control the transmission of the insulating lubricating liquid 90 between the multiple heat exchange cavities 10b to ensure the stable circulation of the insulating lubricating liquid 90, and at the same time, it can also ensure that each corresponding heat exchange device 60 can achieve sufficient heat exchange. Among them, the types of control valves 74 set between the multiple heat exchange cavities 10b can refer to the above.

[0209] like Fig.28 and Fig.34 As shown, in some embodiments, the circulation flow path 80 is provided with a curved and extended flow guiding structure, which is arranged at the underwater part of the shell 10 and realizes heat exchange with the water outside the shell 10. In this way, the insulating lubricating liquid 90 can realize heat exchange with the water outside the shell 10 during the process of flowing along the circulation flow path 80, so as to ensure that the insulating lubricating liquid 90 flowing into the heat exchange cavity 10b is the insulating lubricating liquid 90 after sufficient heat exchange with the water, thereby improving the heat exchange efficiency of the heat exchange device 60.

[0210] like Fig.34 As shown, in some embodiments, the flow guiding structure includes a flexible flow guiding tube 722, and the flexible flow guiding tube 722 is at least partially attached to the housing 10 to achieve heat exchange with water outside the housing 10. When the insulating lubricating liquid 90 passes through the flexible flow guiding tube 72 attached to the housing 10, it can achieve heat exchange with the water outside the housing 10, so that the insulating lubricating liquid 90 can fully exchange heat with further water. For example, the flexible flow guiding tube 72 is at least partially arranged to be spirally wound upward along the inner wall of the housing 10.

[0211] like Figure 4 , Fig.34 as well as Fig.35As shown, in some other embodiments, the flow guide structure includes a flow guide 721, the flow guide 721 is installed in the shell 10, the side wall of the flow guide 721 is provided with a flow guide groove 721a, the side wall of the flow guide 721 is attached to the shell wall of the shell 10, and the shell wall of the shell 10 closes the flow guide groove 721a to form a flow guide channel 721b. When the insulating lubricating liquid 90 flows along the circulating liquid outlet 81, it will pass through the flow guide channel 721b. Since the side wall of the flow guide channel 721b is the shell 10, the insulating lubricating liquid 90 can achieve heat exchange with the water outside the shell 10, so that the insulating lubricating liquid 90 can fully exchange heat with further water. Exemplarily, the flow guide groove 721a is entirely located in the underwater part of the shell 10.

[0212] like Figure 4 and Fig.35 As shown, in some embodiments, the guide groove 721a is provided on the side wall of the guide member 712, and the side wall of the guide member 721 is attached to the shell wall of the shell 10. In this embodiment, the shell wall of the shell 10 is located on the side of the guide member 721, so that the insulating lubricating liquid 90 can achieve heat exchange with water in any direction outside the shell 10 to improve the heat exchange efficiency.

[0213] like Fig.35 As shown, for example, the guide groove 721a is spirally extended from the bottom to the top of the guide member 721 along the circumference of the guide member 721. In this way, the length of the guide channel can be increased to improve the heat exchange effect between the insulating lubricating liquid 90 and water. Specifically, the guide groove 721a first extends around the circumference of the guide member 721, and then tilts upward and extends around the circumference of the guide member 721, so as to achieve the spiral extension from the bottom to the top of the guide member 721.

[0214] In other embodiments, the guide groove 721a extends from the top to the bottom of the guide member 721 in a winding manner. In this embodiment, the guide groove 721a may be provided only on one side of the guide member 721, and correspondingly fits the shell 10 on one side of the shell 10. Since the guide groove 721a extends from the top to the bottom of the guide member 721 in a winding manner, the extension length of the guide channel 721b can be increased accordingly to improve the heat exchange effect between the insulating lubricating liquid 90 and water. Specifically, the guide groove 721a first extends upward from the bottom to the top of the guide member 721, then bends to one side and extends downward from the top to the bottom of the guide member 721, and then bends to one side, and the winding extension is achieved in this way to increase the length of the guide channel 721b.

[0215] In some other embodiments, the guide groove 721a extends in a winding manner on the lateral surface of the guide member 721. In this embodiment, the housing 10 is provided with a heat-conducting shell wall extending into the guide member 721, for example, the heat-conducting shell wall may extend laterally downward into the guide member 72, and the guide groove 72a may form a guide channel 721b between the heat-conducting shell walls. When the insulating lubricating liquid 90 flows in the guide channel 721b extending in a winding manner laterally, heat exchange with water may be achieved through the heat-conducting shell wall of the housing 10.

[0216] In some embodiments, the guide 721 is a metal guide. The metal guide can ensure the structural strength of the guide 721, and can also serve as a heat conductor to further improve the heat exchange effect of the insulating lubricating liquid 90. For example, the metal guide can be a copper guide.

[0217] In some embodiments, the flow guide 721 is an injection molded flow guide. The injection molded flow guide has lower cost and is easier to install. For example, the injection molded flow guide can be a PVC flow guide.

[0218] In addition, the guide member 721 can be detachably connected to the housing 10 for easy maintenance or replacement. Of course, the guide member 721 can also be integrally formed with the housing 10 to ensure the sealing of the guide channel 721b and ensure the stable circulation of the insulating lubricating liquid 90.

[0219] like Figure 4 , Figure 5 as well as Fig.28 As shown, in some embodiments, the electric propeller 100 further includes a filter 71, which is disposed at the liquid inlet end of the circulation path 80 connected to the cavity 10a. The filter 71 can filter the liquid entering the circulation path 80 to prevent impurities from entering the circulation and affecting the circulation efficiency of the insulating lubricating liquid 90, and can also prevent the heat exchange effect of the insulating lubricating liquid 90 from being reduced due to impurities. The installation of the filter 71 can refer to the above, and will not be repeated.

[0220] Exemplarily, the filter 71 is provided with a magnetic attraction member, and the magnetic attraction member is used to attract magnetically attractable impurities in the insulating lubricating fluid 90 flowing through the filter 71. Exemplarily, the filter 71 is an oil absorption filter. Alternatively, the filter 71 is a pressure filter.

[0221] like Fig.28As shown, in some embodiments, the electric propeller 100 further includes a fine filter 73, and the fine filter 73 is connected to the heat exchange chamber 10b. In this way, the insulating lubricating liquid 90 flowing through the heat exchange chamber 10b can be further filtered to prevent impurities from contaminating the insulating lubricating liquid 90 and ensure the heat exchange effect of the insulating lubricating liquid 90. For example, when the heat exchange chamber 10b is a copper tube heat exchange channel, the water inlet and outlet of the fine filter 73 are connected to the heat exchange chamber 10b to filter the insulating lubricating liquid 90. In addition, the user can change the filter element of the fine filter 73 as needed so that the filtering effect meets the requirements.

[0222] In some embodiments, the circulation flow path 80 is at least partially composed of a copper tube. In this way, the temperature circulation of the insulating lubricating liquid 90 can be ensured, and heat exchange can also be achieved through the copper tube during the flow process, so as to further cool the insulating lubricating liquid 90. For example, the bottom of the guide member 72 is connected to the copper tube.

[0223] In some embodiments, the circulation flow path 80 is at least partially composed of an expandable and deformable flexible tube. The flexible tube can expand or contract according to the change of air pressure to prevent the circulation flow from being partially damaged due to excessive air pressure, or the insulation lubricating liquid 90 from being unable to be sucked due to too low air pressure, so as to ensure that the insulation lubricating liquid 90 can circulate stably under any circumstances. For example, the flexible tube is connected between the guide member 72 and the heat exchange cavity 10b.

[0224] like Fig.36 As shown, in some embodiments, the electric propeller 100 further includes a vent valve 732, which is connected to the circulation circuit 80. The vent valve 732 can automatically balance the internal and external air pressures according to the air pressure in the circulation circuit 80 to ensure the stability of the air pressure in the circulation circuit 80, thereby ensuring that the insulating lubricating liquid 90 can circulate stably. Specifically, when the air pressure on one side of the vent valve 732 is too high, the valve will be opened by the pressure, and the gas will flow to the other side of the vent valve. When the air pressure on both sides of the vent valve 732 is balanced, the valve will automatically close under the action of the spring to maintain the air pressure balance in the circulation circuit 80.

[0225] Exemplarily, the vent valve 732 is disposed at the top of the heat exchange chamber 10b. In this way, the vent valve 732 is also located above the water portion of the housing 10 so as to be connected to the outside air and facilitate air pressure regulation. For example, when the heat exchange chamber 10b is a copper tube heat exchange channel, the vent valve 732 is connected to the top cavity wall of the copper tube heat exchange chamber 10b.

[0226] like Fig.37As shown, in some embodiments, the electric thruster 100 further includes a piston pipe 734, one end of which is connected to the circulating flow path 80, and the other end is a free end. A movable piston is provided on the pipe wall of the piston pipe 734, and the piston moves due to the pressure change of the circulating flow path 80. When the air pressure in the circulating flow path 80 is too high, the piston moves toward the free end to balance the air pressure in the circulating flow path 80. When the air pressure in the circulating flow path 80 is too low, the piston moves away from the free end to balance the air pressure in the circulating flow path 80, thereby ensuring that the insulating lubricating liquid 90 can circulate stably. Exemplarily, one end of the piston pipe 734 is connected to the circulating return liquid path 82. For example, the housing 10 is formed with a return channel 10f and a piston pipe 733 connected to the return channel 10f.

[0227] like Fig.38 As shown, in some embodiments, the electric propeller 100 further includes an air pressure regulating valve 733. In this embodiment, the air pressure regulating valve 733 can adjust the air pressure in an active manner, that is, when the air pressure in the circulation flow path 80 is too low, the air is compressed into the circulation flow path 80 through the cylinder to increase the air pressure; when the air pressure in the circulation flow path 80 is too high, the gas in the circulation flow path 80 can be released to reduce the air pressure.

[0228] like Fig.38 As shown, exemplarily, an air pressure detection sensor 735 is provided in the circulation flow path 80, and the air pressure detection sensor 735 can detect the air pressure in the circulation flow path 80 and transmit the signal to the control end, and the control end controls the air pressure regulating valve 733 to adjust the air pressure in the circulation flow path 80 according to the air pressure in the circulation flow path 80, so as to maintain the air pressure balance in the circulation flow path 80. For example, the air pressure detection sensor 735 can be provided in the cavity 10a or the heat exchange cavity 10b to avoid affecting the circulation of the insulating lubricating fluid 90.

[0229] In some embodiments, the air pressure regulating valve 733 is disposed at the top of the heat exchange chamber 10b. In this way, the air pressure regulating valve 733 is also located above the water portion of the housing 10 so as to be connected to the outside air and facilitate air pressure regulation. For example, when the heat exchange chamber 10b is a copper tube heat exchange channel, the air pressure regulating valve 733 is connected to the top cavity wall of the copper tube heat exchange chamber 10b.

[0230] like Fig.28 and Fig.39 As shown, in some embodiments, the heat exchange device 60 is provided with a heat exchange channel 601a, and the heat exchange channel 601a is structured to form at least part of the heat exchange cavity 10b. In this embodiment, when the insulating lubricating fluid 90 flows through the heat exchange cavity 10b, the cavity wall of the heat exchange cavity 10b contacts the heat exchange device 60 to achieve heat exchange, thereby ensuring that the insulating lubricating fluid 90 can stably exchange heat with the heat exchange device 60. For example, the heat exchange cavity 10b is a copper tube heat exchange channel, and heat exchange is achieved by contacting the heat exchange device 60.

[0231] like Fig.28 and Fig.39 As shown, in some other embodiments, the heat exchange device 60 is provided with a heat exchange member 602, and the heat exchange member 602 is used to exchange heat with the insulating lubricating fluid 90 in the heat exchange cavity 10b, and is thermally coupled with the heat exchange device 60. In this embodiment, when the insulating lubricating fluid 90 flows through the heat exchange cavity 10b, it can achieve heat exchange with the heat exchange device 60 by heat exchange with the heat device, so that the heat exchange is better, and when the contact area between the heat exchange member 602 and the insulating lubricating fluid 90 is wider, the heat exchange effect is better. For example, the heat exchange member 602 is a heat-conducting adhesive layer provided on the heat exchange device 60, and the insulating lubricating fluid 90 in the heat exchange cavity 10b can contact the heat-conducting adhesive layer by spraying or soaking, thereby achieving heat exchange with the heat exchange device 60.

[0232] like Figure 4 , Fig.28 as well as Fig.39 As shown, in some embodiments, the heat exchange device 60 includes a drive module 61, and the drive module 61 is used to drive the motor 20 to operate. The drive module 61 is used to control the operation of the motor 20, for example, to control the start and speed direction of the motor 20. In the process of the drive module 61 driving the motor 20 to operate, a large amount of heat will be generated, and the heat exchange between the drive module 61 and the insulating lubricating fluid 90 can reduce the heat of the drive module 61 to ensure that the drive module 61 drives the motor 20 stably. It can be understood that the drive module 61 needs to convert the direct current of the battery into alternating current and boost the voltage of the battery to adapt to the high power of the motor 20. Therefore, there are many electronic components in the drive module 61 that generate heat when working, that is, the drive module 61 generates a large amount of heat when driving the motor 20. In order to ensure that the drive module 61 is within the normal working temperature range, the insulating lubricating fluid 90 is required to cool the drive module 61.

[0233] It is understandable that the drive module 61 needs to be connected to the motor 20 through a connecting wire to realize the drive control of the motor 20. In order to prevent the insulating lubricating fluid 90 in the cavity 10a and the circulating flow path 80 from contacting the connecting wire, insulating rubber can be provided on the outside of the connecting wire to isolate the connecting wire from the cavity 10a.

[0234] like Fig.28 as well as Fig.39 As shown, in some embodiments, a heat exchange channel 601a is provided in the drive module 61, and the heat exchange channel 601a is configured to form at least part of the heat exchange cavity 10a. When the insulating lubricating fluid 90 flows through the heat exchange cavity 10b, it will flow through the heat exchange channel 601a and exchange heat with the drive module 61 to dissipate heat from the drive module 61, thereby ensuring that the drive module 61 stably drives the motor 20.

[0235] like Fig.28 as well as Fig.39 As shown, exemplarily, the driving module 61 includes a driving cooling plate 612 and at least one driving circuit board 611, the driving cooling plate 612 is provided with a heat exchange channel 601a, the heat exchange channel 601a is arranged on the circulation flow path 80, the heat exchange channel 601a is structured to form at least part of the heat exchange cavity 10b, and the driving circuit board 611 is attached to the driving cooling plate 612. In this way, when the insulating lubricating fluid 90 flows through the heat exchange channel 601a, it will exchange heat with the driving circuit board 611 through the driving cooling plate 612 to dissipate heat for the driving circuit board 611, thereby ensuring that the driving module 61 drives the motor 20 stably. For example, the driving circuit board 611 can be attached to any side of the driving cooling plate 612 respectively to achieve uniform heat exchange for the driving circuit board 611. The driving cooling plate 612 can be a copper plate to achieve heat transfer.

[0236] In some embodiments, the driving module 61 is provided with at least two driving circuit boards 611, the motor 20 is provided with at least two stator windings, the driving circuit board 611 is electrically connected to the stator windings, and the heat exchange channel 601a is provided with at least two driving circuit boards 611. For example, two driving circuit boards 611 are respectively provided on both sides of the driving cooling plate 612. It can be understood that in order to increase the driving efficiency of the electric propeller 100, a dual motor 20 is provided in the electric propeller 100, and the operation of the dual motor 20 can achieve stable propulsion of the electric propeller 100, wherein the dual motor 20 is provided with two stator windings, and in order to be able to drive the dual motor 20, at least two driving circuit boards 611 need to be provided, and at least two driving circuit boards 611 are respectively electrically connected to the stator windings of each motor 20 in the dual motor 20, so as to drive the two motors 20 to operate respectively. Since the two driving circuit boards 611 will generate heat when driving the motor 20, when the insulating lubricating fluid 90 flows through the heat exchange cavity 10b, it will exchange heat with at least two driving circuit boards 611 through the side wall of the heat exchange cavity 10b, so as to ensure that the driving module 61 stably drives the above-mentioned motor 20. Of course, in other embodiments, when only one motor 20 is provided, only one driving circuit board 611 may be provided accordingly.

[0237] Exemplarily, the driving module 61 further includes a driving cooling plate 612, the driving cooling plate 612 is provided with a heat exchange channel 601a, the heat exchange channel 601a is structured to form at least part of the heat exchange cavity 10b, and at least two driving circuit boards 611 are attached to the driving cooling plate 612. In this way, when the insulating lubricating fluid 90 flows through the heat exchange channel 601a, it will heat exchange with at least two driving circuit boards 611 through the driving cooling plate 612 to dissipate heat for at least two driving circuit boards 611, so as to ensure that the driving module 61 drives the motor 20 stably. For example, the two driving circuit boards 611 can be respectively attached to both sides of the driving cooling plate 612 to achieve uniform heat exchange for the two driving circuit boards 611. The driving cooling plate 612 can be a copper plate to achieve heat transfer.

[0238] like Fig.28 as well as Fig.39 As shown, in some other embodiments, the driving module 61 may also be at least partially placed in the heat exchange cavity 10b, and heat exchange is achieved by direct contact with the insulating lubricating fluid 90 flowing through the heat exchange cavity 10b. This has a better heat dissipation effect and a faster heat dissipation speed.

[0239] like Fig.28 as well as Fig.39 As shown, exemplarily, the driving module 61 is provided with a driving circuit board 611 and a heat exchanger 602. For example, the heat exchanger 602 is a heat conductive adhesive layer, which is coated on the driving circuit board 611. The driving module 61 is thermally coupled with the insulating lubricating liquid 90 in the heat exchange cavity 10b through the heat conductive adhesive layer. When the insulating lubricating liquid 90 flows through the heat exchange cavity 10b, it will heat exchange with the driving circuit board 611 through the heat conductive adhesive layer to dissipate heat from the driving circuit board 611 to ensure stable driving of the driving module 61. It can be understood that in this embodiment, the heat conductive adhesive layer is used to separate the insulating lubricating liquid 90 and the driving circuit board 611, which is mainly to avoid direct contact between the insulating lubricating liquid 90 and the driving circuit board 611. For example, the driving circuit board 611 can be at least partially placed in the heat exchange cavity 10b, and the driving circuit board is protected by the heat conductive adhesive layer. The insulating lubricating liquid 90 in the heat exchange cavity 10b can contact the heat conductive adhesive layer by spraying or soaking, so as to directly achieve heat exchange with the insulating lubricating liquid 90.

[0240] Exemplarily, the driver circuit board 611 can adopt double-sided cooling, for example, one side of the driver circuit board 611 contacts the driver cooling plate 612 to achieve heat exchange, and the other side of the driver circuit board 611 directly contacts the insulating lubricating liquid 90 by setting a heat exchanger 602 to achieve heat exchange. In this embodiment, one side of the driver circuit board 611 achieves heat exchange through the heat exchange channel 601a, and does not directly contact the insulating lubricating liquid 90, while the other side is separated from the insulating lubricating liquid 90 only by the heat exchanger 602 to achieve heat exchange. The driver circuit board 611 can cool the driver module 61 more efficiently through double-sided cooling to ensure that the driver module 61 drives the motor 20 stably.

[0241] In some other examples, two driving cooling plates 612 may be provided and respectively attached to two sides of the driving circuit board 611 to achieve double-sided cooling of the driving circuit board 611 .

[0242] In some other examples, the driver circuit board 611 is entirely covered with a thermally conductive adhesive layer, and the driver circuit board is entirely placed in the heat exchange cavity 10b, separated from the insulating lubricating liquid 90 by the thermally conductive adhesive layer, so as to perform all-round cooling on the driver circuit board 611.

[0243] like Fig.33 As shown, in some embodiments, the heat exchange device 60 includes a battery module 64. The battery module 64 can power various electrical structures in the electric propeller 100, for example, it can power the motor 20, the drive module 61, etc. When the insulating lubricating fluid 90 flows through the heat exchange cavity 10b, it can exchange heat with the battery module 64 to keep the temperature of the battery module 64 constant, so as to provide stable power supply to various electrical structures in the electric propeller 100. For example, when the temperature of the battery module 64 is too high, the insulating lubricating fluid 90 can cool the battery module 64, and when the temperature of the battery module 64 is too low, the insulating lubricating fluid 90 can heat the battery module 64.

[0244] In some embodiments, the electric propulsion device 100 further includes a control end. When the temperature of the battery module is higher than the first set temperature, the control end pumps the insulating lubricating liquid 90 below the first set temperature to heat exchange with the battery module 64 through the power pump 50 and the control valve 74; when the temperature of the battery module 64 is lower than the second set temperature, the control end pumps the insulating lubricating liquid 90 above the second set temperature to heat exchange with the battery module 64 through the power pump 50 and the control valve 74. In this way, the temperature of the battery module 64 is maintained constant to achieve stable power supply.

[0245] Exemplarily, the insulating lubricating liquid 90 below the first set temperature comes from the liquid insulating lubricating liquid 90 in the cavity 10a. After the insulating lubricating liquid 90 from the cavity 10a is heat-exchanged with the water outside the housing 10, the temperature is relatively low, and the battery module 64 can be cooled to prevent the battery module 64 from being overheated and affecting its use.

[0246] Exemplarily, the insulating lubricating liquid 90 having a temperature higher than the second set temperature comes from the insulating lubricating liquid 90 after heat exchange with other waterborne heat exchange devices 60. The insulating lubricating liquid 90 from other heat exchange devices 60 absorbs the heat of other heat exchange devices 60 and has a higher temperature, which can heat up the battery module 64 to prevent the battery module 64 from being too low in temperature and affecting its use. For example, the insulating lubricating liquid 90 having a temperature higher than the second set temperature comes from the insulating lubricating liquid 90 after heat exchange with the drive module 61.

[0247] Exemplarily, the insulating lubricating liquid 90 having a temperature higher than the second set temperature comes from the insulating lubricating liquid 90 after heat exchange with the motor 20. The insulating lubricating liquid 90 after heat exchange with the motor 20 absorbs the heat of the motor 20 and has a higher temperature, which can heat up the battery module 64 to prevent the battery module 64 from being too low in temperature and affecting its use.

[0248] For example, a control valve 74 may be provided on the circulation flow path 80. When the temperature of the battery module 64 is lower than the first set temperature, the control end may control the control valve 74 of the circulation flow path 80 between the heat exchange cavity 10b thermally coupled to the battery module 64 and the cavity 10a to open, and the insulating lubricating liquid 90 in the cavity 10a may be pumped to the heat exchange with the battery module 64 through the power pump 50. When the temperature of the battery module 64 is higher than the second set temperature, the control end may control the control valve 74 between the heat exchange cavity 10b thermally coupled to the battery module 64 and the heat exchange cavity 10b thermally coupled to other heat exchange devices 60 to open, and the liquid insulating lubricating liquid 90 after heat exchange with other water heat exchange devices 60 may be pumped to the heat exchange with the battery module 64 through the power pump 50. Alternatively, the control end may control the control valve 74 between the heat exchange cavity 10b thermally coupled to the battery module 64 and the liquid storage cavity after heat exchange with the motor 20 to open, and the liquid insulating lubricating liquid 90 after heat exchange with the motor 20 may be pumped to the heat exchange with the battery module 64 through the power pump 50.

[0249] like Fig.40As shown, in some embodiments, the electric propeller 100 further includes a steering system 62, which is an electric steering system. The steering system 62 includes a steering motor 621, which is thermally coupled to the heat exchange chamber 10b to exchange heat with the insulating lubricating fluid 90. The steering system 62 can control the steering of the electric propeller 100. The electric steering system is a steering system that is directly driven by the steering motor 621. For example, the steering motor 621 drives the fuselage of the electric propeller 100 to turn left and right relative to the stern plate, and the stern plate is controlled to be at different propulsion angles to achieve steering. Since the steering motor 621 is directly thermally coupled to the heat exchange chamber 10b, the insulating lubricating fluid 90 flowing through the heat exchange chamber 10b will exchange heat with the steering motor 621, for example, the steering motor 621 is cooled to ensure the efficient operation of the steering motor 621, thereby ensuring the sensitivity and accuracy of the steering.

[0250] Exemplarily, the steering system 62 further includes a steering drive module (not shown) for controlling the steering motor 621, and the steering drive module is thermally coupled to the heat exchange chamber 10b to exchange heat with the insulating lubricating fluid 90. It is understandable that in order to drive the steering motor 621 to operate, it is also necessary to perform drive control through the steering drive module, thermally couple the steering drive module with the heat exchange chamber 10b, and when the insulating lubricating fluid 90 flows through the heat exchange chamber 10b, it will exchange heat with the steering drive module to dissipate heat from the steering drive circuit board on the steering drive module, so as to ensure that the steering drive module drives the steering motor 621 stably.

[0251] like Fig.41As shown, in other embodiments, the electric propeller 100 further includes a steering system 62, which is a hydraulic steering system. The steering system 62 includes an electro-hydraulic steering motor 622 and a steering hydraulic cylinder 623. The steering hydraulic cylinder 623 is provided with a steering fluid inlet and a steering fluid outlet, both of which are connected to the circulating flow path 80. Both of the steering fluid inlet and the steering fluid outlet are provided with a control valve 74, and the insulating lubricating fluid 90 can enter the steering hydraulic cylinder along the circulating flow path 80. The steering system 62 can control the steering of the electric propeller 100. The electro-hydraulic steering system controls the pump to pump the insulating lubricating fluid 90 into the steering hydraulic cylinder 623 or to extract the insulating lubricating fluid 90 in the steering hydraulic cylinder 623 through the electro-hydraulic steering motor 622, so as to drive the fuselage of the electric propeller 100 to turn left and right relative to the stern plate by hydraulic means. For example, when it is necessary to turn in a certain direction, the control valve 74 of the steering fluid inlet can be opened and the control valve 74 of the steering fluid outlet can be closed, and the insulating lubricating fluid 90 can be pumped into the steering hydraulic cylinder 623 by controlling the pump through the electro-hydraulic steering motor 622, and the steering hydraulic cylinder 623 drives the steering shaft to rotate, and the steering shaft rotation drives the entire propeller body to rotate. When it is necessary to turn in another direction, the control valve 74 of the steering fluid inlet can be closed and the control valve 74 of the steering fluid outlet can be opened, and the insulating lubricating fluid 90 can be pumped out of the steering hydraulic cylinder by controlling the pump through the electro-hydraulic steering motor 622, and the steering hydraulic cylinder 623 drives the steering shaft to rotate, and the steering shaft rotation drives the entire propeller body to rotate. In this embodiment, the steering hydraulic cylinder 623 can directly use the insulating lubricating fluid 90 in the cavity 10a to drive the steering, which can save the oil required in the steering hydraulic cylinder 623, so as to effectively use the insulating lubricating fluid 90 in the cavity 10a, and no additional structure is required to load the oil of the steering hydraulic cylinder 623, so that the overall structure of the electric propeller 100 can be made more compact and reasonable.

[0252] In addition, the electro-hydraulic steering motor 622 is thermally coupled to the heat exchange chamber 10b to exchange heat with the insulating lubricating fluid. In this way, the insulating lubricating fluid 90 flowing through the heat exchange chamber 10b will exchange heat with the electro-hydraulic steering motor 622, for example, dissipating heat from the electro-hydraulic steering motor 622 to ensure efficient operation of the electro-hydraulic steering motor 622, thereby ensuring steering sensitivity and accuracy.

[0253] like Fig.42As shown, in some other embodiments, the electric propeller 100 further includes a steering system 62, which is a hydraulic steering system. The steering system 62 includes a steering hydraulic cylinder 623, which is provided with a steering fluid inlet and a steering fluid outlet, both of which are connected to the circulation flow path 80, and both of which are provided with a control valve 74, so that the insulating lubricating fluid 90 can enter the steering hydraulic cylinder 623 along the circulation flow path 80. The steering system 62 can control the steering of the electric propeller 100. The hydraulic steering system can control the pump to pump the insulating lubricating fluid 90 into the steering hydraulic cylinder 623 or extract the insulating lubricating fluid 90 in the steering hydraulic cylinder by electric power, so as to drive the fuselage of the electric propeller 100 to turn left and right relative to the stern plate by hydraulic means. For example, when it is necessary to turn in a certain direction, the control valve 74 of the steering fluid inlet can be opened and the control valve 74 of the steering fluid outlet can be closed, and the pump can be controlled by electricity to pump the insulating lubricating liquid 90 into the steering hydraulic cylinder 623, and the steering hydraulic cylinder 623 drives the steering shaft to rotate, and the rotation of the steering shaft drives the entire propeller body to rotate. When it is necessary to turn in another direction, the control valve 74 of the steering fluid inlet can be closed and the control valve 74 of the steering fluid outlet can be opened, and the pump can be controlled by electricity to pump the insulating lubricating liquid 90 out of the steering hydraulic cylinder 623, and the steering hydraulic cylinder 623 drives the steering shaft to rotate, and the rotation of the steering shaft drives the entire propeller body to rotate. In this embodiment, the steering hydraulic cylinder 623 can directly use the insulating lubricating liquid 90 in the cavity 10a to drive the steering, which can save the oil required in the steering hydraulic cylinder 623, so as to effectively use the insulating lubricating liquid 90 in the cavity 10a, and no additional structure is required to load the oil of the steering hydraulic cylinder 623, so that the overall structure of the electric propeller 100 can be made more compact and reasonable.

[0254] like Fig.43 As shown, in some embodiments, the electric propeller 100 also includes a lifting system 63, which is an electric lifting system. The lifting system 63 includes a lifting motor 631, and the lifting motor 631 is thermally coupled to the heat exchange chamber 10b to exchange heat with the insulating lubricating liquid. The lifting system 63 can control the lifting of the electric propeller 100, that is, control the electric propeller 100 to lift or lower the propeller to adjust the propulsion direction of the propeller in the vertical plane. The electric lifting system is directly driven by the lifting motor 631 to achieve lifting, for example, the lifting motor 631 drives the shaft of the propeller 40 to flip up and down relative to the water surface, and the propeller 40 is at different angles to achieve lifting. Since the lift motor 631 is directly thermally coupled to the heat exchange chamber 10b, the insulating lubricating fluid 90 flowing through the heat exchange chamber 10b will exchange heat with the lift motor 631, for example, dissipate heat for the lift motor 631 to ensure efficient operation of the lift motor 631, thereby ensuring the sensitivity and accuracy of the lift, and ensuring the balance of the electric propeller 100.

[0255] Exemplarily, the lifting system 63 further includes a lifting drive module (not shown) for controlling the lifting motor 631, and the lifting drive module is thermally coupled to the heat exchange chamber 10b to exchange heat with the insulating lubricating fluid 90. It is understandable that in order to drive the lifting motor 631 to operate, it is also necessary to perform driving control through the lifting drive module, thermally couple the lifting drive module with the heat exchange chamber 10b, and when the insulating lubricating fluid 90 flows through the heat exchange chamber 10b, it will exchange heat with the lifting drive module to dissipate heat from the lifting drive circuit board on the lifting drive module, thereby ensuring that the lifting drive module drives the lifting motor 631 stably.

[0256] like Fig.44 As shown, in other embodiments, the electric propeller 100 further includes a lifting system 63, which is an electro-hydraulic lifting system, and the lifting system 63 includes an electro-hydraulic lifting motor 632 and a lifting hydraulic cylinder 633, and the lifting hydraulic cylinder 633 is provided with a lifting liquid inlet and a lifting liquid outlet, and the lifting liquid inlet and the lifting liquid outlet are both connected to the circulation flow path 80, and the lifting liquid inlet and the lifting liquid outlet are both provided with a control valve 74, and the insulating lubricating liquid 90 can enter the lifting hydraulic cylinder 633 along the circulation flow path 80. The lifting system 63 can control the lifting of the electric propeller 100. The electro-hydraulic lifting system controls the pump to pump the insulating lubricating liquid 90 into the lifting hydraulic cylinder 633 through the electro-hydraulic lifting motor 632, or extracts the insulating lubricating liquid 90 in the lifting hydraulic cylinder 633, so as to achieve lifting by hydraulic means. For example, when it is necessary to tilt in a certain direction, the control valve 74 of the tilting liquid inlet can be opened and the control valve 74 of the tilting liquid outlet can be closed, and the insulating lubricating liquid 90 can be pumped into the tilting hydraulic cylinder 633 by controlling the pump through the electro-hydraulic tilting motor 632, and the tilting hydraulic cylinder 633 drives the propeller 40 to lift. When it is necessary to tilt in another direction, the control valve 74 of the tilting liquid inlet can be closed and the control valve 74 of the tilting liquid outlet can be opened, and the insulating lubricating liquid 90 can be pumped out of the tilting hydraulic cylinder 633 by controlling the pump through the electro-hydraulic tilting motor 632, and the tilting hydraulic cylinder 633 drives the propeller 40 to descend. In this embodiment, the tilting hydraulic cylinder 633 can directly use the insulating lubricating liquid 90 in the cavity 10a to drive the tilting, which can save the oil required in the tilting hydraulic cylinder 633, so as to effectively use the insulating lubricating liquid 90 in the cavity 10a, and no additional structure is required to load the oil of the tilting hydraulic cylinder 633, so that the overall structure of the electric propeller 100 can be made more compact and reasonable.

[0257] In addition, the electro-hydraulic lifting motor 632 is thermally coupled to the heat exchange chamber 10b to exchange heat with the insulating lubricating fluid. In this way, the insulating lubricating fluid 90 flowing through the heat exchange chamber 10b will exchange heat with the electro-hydraulic lifting motor 632, for example, dissipating heat from the electro-hydraulic lifting motor 632 to ensure efficient operation of the electro-hydraulic lifting motor 632, thereby ensuring the sensitivity and accuracy of the lifting.

[0258] like Fig.45 As shown, in some other embodiments, the electric propeller 100 further includes a lifting system 63, which is a hydraulic lifting system, and the lifting system 63 includes a lifting hydraulic cylinder 633, and the lifting hydraulic cylinder 633 is provided with a lifting liquid inlet and a lifting liquid outlet, and the lifting liquid inlet and the lifting liquid outlet are both connected to the circulation flow path 80, and the lifting liquid inlet and the lifting liquid outlet are both provided with a control valve 74, and the insulating lubricating liquid 90 can enter the lifting hydraulic cylinder 633 along the circulation flow path 80. The lifting system 63 can control the lifting of the electric propeller 100. The hydraulic lifting system can control the pump by electric power to pump the insulating lubricating liquid 90 into the lifting hydraulic cylinder 633, or extract the insulating lubricating liquid 90 in the lifting hydraulic cylinder 633, so as to achieve lifting by hydraulic means. For example, when it is necessary to tilt in a certain direction, the control valve 74 of the tilting liquid inlet can be opened and the control valve 74 of the tilting liquid outlet can be closed, and the pump can be controlled by electricity to pump the insulating lubricating liquid 90 into the tilting hydraulic cylinder 633, and the tilting hydraulic cylinder 633 drives the propeller 40 to lift. When it is necessary to tilt in another direction, the control valve 74 of the tilting liquid inlet can be closed and the control valve 74 of the tilting liquid outlet can be opened, and the pump can be controlled by electricity to pump the insulating lubricating liquid 90 out of the tilting hydraulic cylinder 633, and the tilting hydraulic cylinder 633 drives the propeller 40 to descend. In this embodiment, the tilting hydraulic cylinder 633 can directly use the insulating lubricating liquid 90 in the cavity 10a to drive the tilting, which can save the oil required in the tilting hydraulic cylinder 633, so as to effectively use the insulating lubricating liquid 90 in the cavity 10a, and no additional structure is required to load the oil of the tilting hydraulic cylinder 633, so that the overall structure of the electric propeller 100 can be made more compact and reasonable.

[0259] like Figure 1 , Fig.28 as well as Fig.46 As shown, the present application also provides a water area movable device 1000 , including a water area carrier 200 and the electric propeller 100 mentioned above, and the electric propeller 100 is connected to the water area carrier 200 .

[0260] In the mobile device 1000 in water area provided in the embodiment of the present application, the electric propeller 100 can propel the mobile device 100 in water area to move, so as to realize the mobile device 1000 in water area. In the electric propeller 100, the insulating lubricating liquid 90 can exchange heat with the motor 20 and some other heat exchange components 60, for example, it can absorb the heat generated by the motor 20 and the reducer 30 when working. The water area carrier 200 can be a hull, a floating board, a buoy, a diving board, a diving tube, etc. Since the insulating lubricating liquid 90 is located in the cavity 10a, and the cavity 10a is at least partially located underwater, the insulating lubricating liquid 90 located at the bottom of the cavity 10a can exchange heat with the water outside the shell 10 to dissipate the absorbed heat, and thus continuously exchange heat with the motor 20 and some other heat exchange components 60 to ensure the normal operation of the motor 20 and some other heat exchange components 60, thereby ensuring the stable operation of the electric propeller 100. The movable device 1000 in water area of ​​the present application does not need to add additional heat dissipation devices, so the weight of the movable device 1000 in water area of ​​the ship will not be increased, the cost is low and the heat dissipation effect is excellent.

[0261] like Figure 1 , Fig.28 as well as Fig.46 As shown, in some embodiments, the water area movable device 1000 also includes a battery module 64 disposed in the water area carrier 200, and the battery module 64 is electrically connected to the electric propeller 100. In this embodiment, the battery module 64 is disposed in the water area carrier 200, and can provide power for the electric propeller 100, for example, it can provide power for the motor 20, the drive module 61, etc. The battery module 64 is disposed in the water area carrier 200 to simplify the volume of the electric propeller 100, so that the overall structure of the water area movable device 1000 is more reasonable. In other embodiments, the battery module 64 can also be disposed in the electric propeller 100, and the specific reference is made to the above.

[0262] like Figure 1 , Fig.28 as well as Fig.46 As shown, in some embodiments, the water area movable device 1000 further includes a steering wheel 201 disposed on the water area carrier 200, the steering wheel 201 is connected to the circulation circuit 80, and the insulating lubricating fluid 90 can be coupled to the steering wheel 201 through the circulation circuit 80. The steering wheel 201 can directly use the insulating lubricating fluid 90 in the cavity 10a as power, without the need for an additional structure to load the oil of the hydraulic system, thereby making the water area movable device 1000 more compact and reasonable.

[0263] In some embodiments, the steering angle of the steering wheel 201 can adjust the flow rate of the insulating lubricating liquid 90 to control the steering. In this way, the steering angle of the mobile device 1000 in water area can be accurately controlled according to different steering angles of the steering wheel 201. For example, the amount of insulating lubricating liquid 90 sucked or removed from the steering hydraulic cylinder by the pump is different at different steering angles of the steering wheel 201, so as to accurately control the steering angle.

[0264] In some embodiments, the steering wheel 201 obtains the steering resistance force through the flow resistance of the insulating lubricant 90. In this way, the user can feel the steering. For example, when the steering angle of the steering wheel 201 is too large, a larger force feedback will be provided to facilitate a better sense of control.

[0265] like Figure 1 , Fig.28 as well as Fig.46 As shown, in some embodiments, the electric propeller 100 is a pod propeller, and the electric propeller 100 is fixed to the bottom of the water body 200. The electric propeller 100 is limited in volume and needs to be provided with the driving module 61 on the water body 200, so the water body movable device 1000 also includes the driving module 61 provided on the water body 200, and the circulating flow path 80 is connected to the driving module 61 to heat exchange the driving module 61. In this embodiment, the driving module 61 is provided in the water body 200, and can be used to control the operation of the motor 20, for example, to control the start and speed direction of the motor 20. In the process of the driving module 61 driving the motor 20 to operate, a large amount of heat will be generated, and through the heat exchange between the driving module 61 and the insulating lubricating fluid 90, the heat of the driving module 61 can be reduced to ensure the stable driving of the motor 20 by the driving module 61. The driving module 61 is provided in the water body 200 to simplify the volume of the electric propeller 100, so that the overall structure of the water body movable device 1000 is more reasonable. In other embodiments, the driving module 61 may also be disposed in the electric propeller 100 .

[0266] like Figure 1 , Fig.28 as well as Fig.46As shown, in some embodiments, the water area movable device 1000 further includes a carrier device 202 disposed on the water area carrier 200, and the circulating flow path 80 is connected to the carrier device 202 to exchange heat with the carrier device 202. The insulating lubricating liquid 90 can exchange heat with the carrier device 202 to realize the corresponding function of the carrier device 202. For example, the circulating flow path 80 connected to the carrier device 202 can be connected to the heat exchange cavity 10b of other heat exchange devices 60, so that the insulating lubricating liquid 90 that absorbs the heat of other heat exchange devices 60 can flow to the carrier device 202, or the circulating flow path 80 connected to the carrier device 202 can be connected to the liquid storage cavity 10c after the heat exchange of the motor 20, so that the insulating lubricating liquid 90 that absorbs the heat of the motor 20 can flow to the carrier device 202, or the circulating flow path 80 connected to the carrier device 202 can be directly connected to the cavity 10a, so that the cooled insulating lubricating liquid 90 can flow to the carrier device 202. For example, the carrier equipment 202 may be a heating and ventilation equipment or a refrigeration equipment.

[0267] Exemplarily, the carrier device 202 may also be an electrical device, such as a generator, a refrigerator, an air conditioner, or the like.

[0268] Exemplarily, the carrier device 202 may also be a terminal device. In this way, the insulating lubricating fluid 90 can perform heat exchange with the terminal device, so that the terminal device provided in the water area carrier 200 can operate stably. Exemplarily, the terminal device may be a control terminal provided in the water area carrier 200, for example, a control box, a control panel, etc.

[0269] The above description is only a preferred embodiment of the present application, and does not limit the patent scope of the present application. All equivalent structural changes made by using the contents of the present application specification and drawings under the application concept of the present application, or directly / indirectly used in other related technical fields are included in the patent protection scope of the present application.

Claims

1. An electric propeller, characterized in that: include: A shell having a cavity at least partially located underwater, the cavity being used to contain an insulating lubricating liquid capable of heat exchange with the shell; A motor is disposed in the cavity, the motor can be in contact with the insulating lubricating liquid during operation, and the motor is provided with a motor shaft; A reducer is disposed in the cavity, the reducer can be in contact with the insulating lubricating liquid during operation, and an input end of the reducer is connected to the motor shaft; A propeller is connected to the output end of the reducer, and the propeller is located outside the shell.

2. The electric propeller according to claim 1, characterized in that: It also includes a power pump system, which includes a power pump, a liquid inlet and a liquid outlet. The power pump is connected to the liquid inlet and the liquid outlet. The power pump obtains the insulating lubricating liquid in the cavity through the liquid inlet, and the insulating lubricating liquid obtained by the power pump is pumped to a high position through the liquid outlet.

3. The electric propeller according to claim 2, characterized in that: The power pump is arranged in the cavity, and the power pump is coupled to the motor shaft to operate under the torque of the motor shaft.

4. The electric propeller according to claim 3, characterized in that: The power pump can pump fluid under either the forward torque or the reverse torque of the motor shaft.

5. The electric propeller according to claim 3, characterized in that: The power pump is provided with a pump body and a pump casing, the pump casing is provided with a liquid inlet channel and a liquid outlet channel, the liquid inlet channel is connected to the liquid inlet path, the liquid outlet channel is connected to the liquid outlet path, the pump body is provided in the pump casing, the pump body is connected to the motor shaft to rotate with the rotation of the motor shaft, and the insulating lubricating liquid in the liquid inlet channel is pumped to the liquid outlet channel.

6. The electric propeller according to claim 5, characterized in that: The pump body includes a first rotor shaft, a first rotor and a second rotor, the first rotor shaft is connected to the motor shaft, the first rotor is concentrically connected to the first rotor shaft, an eccentric hole is provided in the second rotor, the first rotor is eccentrically matched with the eccentric hole, and the insulating lubricating liquid is pumped from the liquid inlet channel to the liquid outlet channel through the gap between the eccentric hole and the first rotor.

7. The electric propeller according to claim 6, characterized in that: The pump body further comprises a rotor limiting ring, which is sleeved on the outer peripheral side of the second rotor to limit the offset position of the second rotor relative to the first rotor.

8. The electric propeller according to claim 7, characterized in that: The liquid outlet channel is provided with at least one forward liquid outlet channel and at least one reverse liquid outlet channel. When the motor rotates forward, the liquid outlet rate of the forward liquid outlet channel is greater than the liquid outlet rate of the reverse liquid outlet channel. When the motor rotates reversely, the liquid outlet rate of the reverse liquid outlet channel is greater than the liquid outlet rate of the forward liquid outlet channel.

9. The electric propulsion device according to claim 8, characterized in that: The pump housing is provided with a blocking member, the rotor limiting ring is coaxially rotated with the second rotor, and the blocking member is used to locate the rotational position of the rotor limiting ring to locate the offset direction of the second rotor relative to the first rotor.

10. The electric propulsion device according to claim 9, characterized in that: When the motor rotates forward, the rotor limit ring rotates to the first position and conflicts with the blocking member, and the gap offset between the second rotor and the first rotor is connected to the forward liquid outlet channel; when the motor rotates reversely, the rotor limit ring rotates to the second position and conflicts with the blocking member, and the gap offset between the second rotor and the first rotor is connected to the reverse liquid outlet channel.

11. The electric propulsion device according to claim 10, characterized in that: The rotor limiting ring is provided with a matching boss, one side of the matching boss forms a first blocking portion, and the other side of the matching boss forms a second blocking portion. When the motor rotates forward, the rotor limiting ring rotates forward, and the first blocking portion abuts against the blocking member; when the motor rotates reversely, the rotor limiting ring reverses, and the second blocking portion abuts against the blocking member.

12. The electric propeller according to claim 5, characterized in that: One liquid outlet channel is provided, and when the motor rotates forward or reversely, the insulating lubricating liquid in the liquid inlet channel is pumped to the liquid outlet channel.

13. The electric propeller according to claim 5, characterized in that: At least two liquid outlet channels are provided, at least one of which discharges liquid to the stator of the motor and the gear of the reducer, and at least one of which discharges liquid to the bearing shaft system of the motor and the shaft system bearing of the reducer.

14. The electric propeller according to claim 5, characterized in that: At least four liquid outlet channels are provided, at least one of which discharges liquid to the stator of the motor, at least one of which discharges liquid to the gear of the reducer, at least one of which discharges liquid to the bearing shaft of the motor, and at least one of which discharges liquid to the shaft bearing of the reducer.

15. The electric propeller according to claim 5, characterized in that: The liquid outlet channel is provided with at least two liquid outlets, at least one of which discharges liquid to the stator of the motor and the gear of the reducer, and at least one of which discharges liquid to the bearing shaft system of the motor and the shaft system bearing of the reducer.

16. The electric propulsion device according to claim 15, characterized in that: The liquid outlet is provided with a damping hole, or the liquid outlet is provided with a damping member.

17. The electric propulsion device according to claim 5, characterized in that: The pump housing comprises a second shell and a first shell connected to each other, the pump body is arranged in the second shell, and the liquid inlet channel and the liquid outlet channel are arranged in the first shell.

18. The electric propulsion device according to claim 17, characterized in that: The surface of the first shell facing the second shell is formed with the liquid inlet channel and the liquid outlet channel, the pump body is arranged in the installation groove of the second shell facing the first shell, and the second shell and the first shell are connected to seal the liquid inlet channel and the liquid outlet channel.

19. The electric propulsion device according to claim 5, characterized in that: The pump casing is fixedly connected to the housing.

20. The electric propulsion device according to claim 5, characterized in that: The liquid outlet channel outputs the sprinkled insulating lubricating liquid to the motor through the liquid outlet path.

21. The electric propulsion device according to claim 2, characterized in that: The power pump system also includes a first spray structure, which is adjacent to the motor and connected to the liquid outlet. The first spray structure is used to spray the insulating lubricating liquid output from the liquid outlet to the motor.

22. The electric propulsion device according to claim 21, characterized in that The first spray structure is arranged to extend along the axial direction of the motor shaft, the motor is provided with at least two stator winding groups arranged side by side along the extension direction of the motor shaft, and the first spray structure sprays liquid evenly to the at least two stator winding groups arranged side by side.

23. The electric propulsion device according to claim 1, characterized in that: The motor comprises a stator, a rotor and a cover. The rotor is driven by the stator to rotate. The rotor is connected to the motor shaft. The cover is arranged outside the rotor to limit the rotor from stirring the insulating lubricating liquid.

24. The electric propulsion device according to claim 23, characterized in that: The end of the cover body is fixed on the motor shaft.

25. The electric propulsion device according to claim 24, characterized in that The cover is a magnetically permeable cover, and the cover allows the magnetic fields of the stator and the rotor to pass through.

26. The electric propulsion device according to claim 1, characterized in that: The motor further comprises a heat conducting member, wherein the motor comprises a stator and a rotor, the heat conducting member is connected to the housing and the stator, and the rotor is built in the stator.

27. The electric propulsion device according to claim 26, characterized in that The stator is provided with a stator winding group, the outer periphery of the stator winding group is provided with a heat-conducting glue potting layer, and the heat-conducting component is connected to the shell and the heat-conducting glue potting layer.

28. The electric propulsion device according to claim 1, characterized in that: The reducer comprises a plurality of continuously meshing gears, wherein the plurality of continuously meshing gears are arranged between the input end and the output end, and the plurality of continuously meshing gears are in contact with the insulating lubricating fluid for heat exchange when rotating.

29. The electric propulsion device according to claim 28, characterized in that When the plurality of continuously meshing gears rotate, the insulating lubricating liquid at the lower part of the cavity can be stirred to the higher part of the cavity, and then falls back from the higher part to contact with the plurality of continuously meshing gears.

30. The electric propulsion device according to claim 28, characterized in that It also includes a power pump system, which is connected to the cavity. The power pump system draws the insulating lubricating liquid at the lower part of the cavity to the higher part of the cavity so as to make balanced contact with the multiple continuously meshing gears in a shower manner.

31. The electric propulsion device according to claim 30, characterized in that The power pump system also includes a second spray structure, which is adjacent to the reducer and is used to spray the insulating lubricating liquid output by the power pump system onto the plurality of continuously meshing gears.

32. The electric propulsion device according to claim 30, characterized in that The reducer also includes a plurality of rotating shafts passing through the plurality of continuously meshing gears, a plurality of rotating bearings are arranged between the housing and the plurality of rotating shafts, and the power pump system is provided with a plurality of liquid outlets, and the plurality of liquid outlets can supply the insulating lubricating liquid to lubricate the plurality of rotating shafts and the plurality of rotating bearings.

33. The electric propulsion device according to claim 2, characterized in that: It also includes a liquid storage cavity, and the insulating lubricating liquid in the cavity is sucked into the liquid storage cavity along the liquid inlet path and the liquid outlet path by the power pump.

34. The electric propulsion device according to claim 33, characterized in that The liquid storage chamber is arranged at a position of the housing adjacent to the motor.

35. The electric propulsion device according to claim 33, characterized in that The liquid storage chamber is arranged at a position of the housing adjacent to the reducer.

36. The electric propulsion device according to claim 33, characterized in that The housing is provided with a partition structure between the motor and the reducer, and the liquid storage cavity is arranged in the partition structure.

37. The electric propulsion device according to claim 33, characterized in that The power pump system also includes a drain path, which is connected to the liquid storage chamber. The drain port of the drain path is adjacent to the motor and / or the reducer, and the insulating lubricating liquid flowing out of the drain path can flow to the motor and / or the reducer.

38. The electric propulsion device according to claim 37, characterized in that The power pump system further includes an overflow path, the overflow path is connected to the liquid storage chamber, and a position where the overflow path is connected to the liquid storage chamber is higher than a position where the drain path is connected to the liquid storage chamber.

39. The electric propulsion device according to claim 37, characterized in that The power pump system further comprises a liquid discharge pump, and the liquid discharge pump is arranged in the liquid discharge path.

40. The electric propulsion device according to claim 2, characterized in that: The liquid inlet passage is provided with a liquid suction port, and the position of the liquid suction port changes with the forward and backward tilting or forward and backward tilting of the shell.

41. The electric propulsion device according to claim 40, characterized in that The liquid inlet circuit includes a liquid inlet hose and a counterweight, wherein the liquid inlet hose is connected to the power pump, the counterweight is arranged at the end of the liquid inlet hose, the liquid suction port is arranged on the counterweight, and the counterweight moves with the forward and backward tilt or forward and backward tilt of the shell.

42. The electric propulsion device according to claim 2, characterized in that: The power pump system is provided in plurality, and the plurality of power pump systems can draw the insulating lubricating liquid from a plurality of positions of the cavity.

43. The electric propulsion device according to claim 42, characterized in that Two power pump systems are provided, and the liquid inlet paths of the two power pump systems are respectively arranged at a position at the lower part of the cavity adjacent to the propeller and at a position at the lower part of the cavity away from the propeller.

44. The electric propulsion device according to claim 35, characterized in that The liquid inlet paths are arranged in plurality, and the power pump is respectively connected to different positions of the cavity through the plurality of liquid inlet paths.

45. The electric propulsion device according to claim 1, characterized in that A liquid collecting tank for containing the insulating lubricating liquid is provided at the bottom of the cavity.

46. ​​The electric propulsion device according to claim 45, characterized in that It also includes a power pump system, which includes a power pump, a liquid inlet and a liquid outlet. The power pump is connected to the liquid inlet and the liquid outlet. The power pump is connected to the liquid collecting tank through the liquid inlet, and the insulating lubricating liquid in the liquid collecting tank can flow to the top through the liquid outlet.

47. The electric propulsion device according to claim 46, characterized in that The power pump is connected to the bottom of the liquid collecting tank through the liquid inlet path.

48. The electric propulsion device according to claim 45, characterized in that Along the direction from the bottom of the liquid collecting trough to the cavity, the cross-sectional area of ​​the liquid collecting trough gradually increases.

49. The electric propulsion device according to claim 45, characterized in that The cavity is provided with a first section and a second section at the lower part, and a connecting surface connected between the first section and the second section. There is a section difference between the first section and the second section. The first section is lower than the second section. The liquid collecting trough is formed between the first section and the connecting surface.

50. The electric propulsion device according to claim 45, characterized in that The shell is provided with guide fins, the liquid collecting tank is arranged in the guide fins, and the shape of the liquid collecting tank is adapted to the shape of the guide fins.

51. The electric propulsion device according to claim 45, characterized in that The depth of the liquid collecting groove is greater than the width of the liquid collecting groove along the motor shaft direction.

52. The electric propulsion device according to claim 45, characterized in that The width of the liquid collecting groove along the motor shaft direction is greater than the width thereof perpendicular to the motor shaft direction.

53. The electric propulsion device according to claim 2, characterized in that: It also includes a filter for filtering the insulating lubricating liquid, and the filter is arranged in the liquid inlet path.

54. The electric propulsion device according to claim 53, characterized in that The filter is provided with a magnetic attraction member for absorbing magnetically attractable impurities of the insulating lubricating liquid.

55. The electric propulsion device according to claim 53, characterized in that The filter is detachably arranged in the liquid inlet path.

56. The electric propulsion device according to claim 53, characterized in that The filter is non-detachably arranged in the liquid inlet path.

57. The electric propulsion device according to claim 1, characterized in that The cavity is a sealed cavity.

58. The electric propulsion device according to claim 1, characterized in that It also includes a liquid exchange valve. The shell is provided with a first liquid exchange port located underwater. The liquid exchange valve is arranged at the first liquid exchange port. The liquid exchange valve is used to open or close the first liquid exchange port.

59. The electric propulsion device according to claim 1, characterized in that It also includes a suction tube, the shell is provided with a second fluid exchange port located above the water, one end of the suction tube extends to the cavity, and the other end passes through the second fluid exchange port, and the end of the suction tube passing through the second fluid exchange port is used to connect with the fluid exchange pump.

60. The electric propulsion device according to claim 1, characterized in that The shell is provided with a fluid exchange channel, one end of which is connected to the bottom of the cavity, and the other end of which is arranged above the water level of the shell.

61. An electric propeller, characterized in that: include: A shell, provided with a cavity for being at least partially located under water and a heat exchange cavity for being at least partially located above water, wherein the cavity is used to contain an insulating lubricating liquid, and the insulating lubricating liquid can exchange heat with the shell; A circulation flow path, cyclically connected to the cavity and the heat exchange cavity; A power pump is arranged on the flow path of the insulating lubricating liquid to drive the insulating lubricating liquid to circulate in the cavity, the circulation flow path and the heat exchange cavity; a motor, disposed in the underwater portion of the cavity, capable of heat exchange with the insulating lubricating fluid in the cavity; A propeller connected to the motor via a shaft system, the propeller being located outside the housing and driven to rotate by the motor; The heat exchange device is thermally coupled to the heat exchange cavity and exchanges heat with the insulating lubricating fluid in the heat exchange cavity.

62. The electric propulsion device according to claim 61, characterized in that The circulation flow path includes a circulation liquid outlet path and a circulation liquid return path, and both the circulation liquid outlet path and the circulation liquid return path are connected to the cavity and the heat exchange cavity.

63. The electric thruster according to claim 62, characterized in that The power pump is arranged on the circulating liquid outlet path.

64. The electric propulsion device according to claim 62, characterized in that The power pump is arranged on the circulating liquid return path.

65. The electric thruster of claim 62, wherein: The power pump is arranged in the cavity.

66. The electric thruster of claim 62, wherein: The power pump is arranged in the heat exchange chamber.

67. The electric thruster according to claim 62, characterized in that The shell is provided with a reflux channel extending from the heat exchange cavity to the cavity, and the reflux channel forms the circulating liquid return path.

68. The electric thruster according to claim 61, characterized in that The circulation flow path is provided with a curved and extended flow guiding structure, which is arranged at the underwater part of the shell and realizes heat exchange with water outside the shell.

69. The electric propulsion device according to claim 68, characterized in that The flow guiding structure comprises a flexible flow guiding tube, and the flexible flow guiding tube is at least partially attached to the shell to achieve heat exchange with water outside the shell.

70. The electric thruster according to claim 68, characterized in that The flow guide structure includes a flow guide member installed in the shell, a side wall of the flow guide member is provided with a flow guide groove, the side wall of the flow guide member is attached to the shell wall of the shell, and the shell wall of the shell closes the flow guide groove to form the flow guide channel.

71. The electric propulsion device according to claim 70, characterized in that The guide groove is arranged on the side wall of the guide member, and the side wall of the guide member is attached to the shell wall of the shell.

72. The electric propulsion device according to claim 71, characterized in that The guide groove is spirally extended from the bottom to the top of the guide member along the circumference of the guide member.

73. The electric propulsion device according to claim 70, characterized in that The guide groove extends in a winding manner from the top to the bottom of the guide member.

74. The electric propulsion device according to claim 70, characterized in that The guide groove extends in a winding manner on a transverse surface of the guide member.

75. The electric thruster of claim 70, wherein: The guide member is a metal guide member.

76. The electric thruster of claim 70, wherein: The flow guide is an injection molded flow guide.

77. The electric thruster according to claim 61, characterized in that The circulation flow path includes a circulation liquid outlet path and a circulation liquid return path, and the circulation liquid outlet path and the circulation liquid return path are both connected to the cavity and the heat exchange cavity; The circulating liquid outlet circuit and / or the circulating liquid return circuit are provided with a control valve to control the amount of liquid outlet and / or liquid return.

78. The electric propulsion device according to claim 77, characterized in that The control valve includes any one or a combination of a pressure regulating valve, a solenoid valve, a switch valve, a three-way valve, and a one-way valve.

79. The electric propulsion device according to claim 78, characterized in that A one-way valve is provided on the circulation flow path. When the electric propeller stops running, the one-way valve is closed, and the insulating lubricating liquid is stored in the heat exchange cavity. When the electric propeller stops running, the one-way valve is opened, and the insulating lubricating liquid circulates.

80. The electric thruster of claim 77, wherein: The shell is provided with a plurality of the heat exchange chambers, and a plurality of the heat exchange devices are provided, and the plurality of the heat exchange devices correspond one-to-one to the plurality of the heat exchange chambers. The control valve is used to control the transmission of the insulating lubricating liquid between the cavity and the plurality of the heat exchange chambers, and is also used to control the transmission of the insulating lubricating liquid between the plurality of the heat exchange chambers.

81. The electric propulsion device according to claim 61, characterized in that It also includes a filter, which is arranged at the liquid inlet end of the circulation flow path connected to the cavity.

82. The electric propulsion device according to claim 81, characterized in that The filter is provided with a magnetic attraction member, and the magnetic attraction member is used to absorb magnetically attractable impurities in the insulating lubricating fluid flowing through the filter.

83. The electric propulsion device according to claim 61, characterized in that It also includes a fine filter, which is connected to the heat exchange chamber.

84. The electric thruster of claim 61, wherein: The circulation flow path is at least partially composed of copper tubes.

85. The electric thruster of claim 61, wherein: The circulation flow path is at least partially composed of an expandable and deformable flexible tube.

86. The electric thruster of claim 61, wherein: It also includes a vent valve connected to the circulation flow path.

87. The electric propulsion device according to claim 86, characterized in that The ventilation valve is arranged on the top of the heat exchange chamber.

88. The electric propulsion device according to claim 61, characterized in that It also includes a piston pipeline, one end of which is connected to the circulation flow path and the other end is a free end. A movable piston is provided on the pipeline wall of the piston pipeline, and the piston moves due to the pressure change of the circulation flow path.

89. The electric thruster according to claim 61, characterized in that The heat exchange device is provided with a heat exchange channel, and the heat exchange channel is structured to form at least a portion of the heat exchange cavity.

90. The electric thruster according to claim 61, characterized in that The heat exchange device is provided with a heat exchange element, and the heat exchange element is used to exchange heat with the insulating lubricating fluid in the heat exchange cavity and is thermally coupled with the heat exchange device.

91. The electric propulsion device according to claim 61, characterized in that The heat exchange device includes a driving module, and the driving module is used to drive the motor to operate.

92. The electric propulsion device according to claim 91, characterized in that A heat exchange channel is provided in the driving module, and the heat exchange channel is structured to form at least a portion of the heat exchange cavity.

93. The electric thruster according to claim 92, characterized in that The driving module is provided with at least two driving circuit boards, the motor is provided with at least two stator windings, the driving circuit boards are electrically connected to the stator windings, and the heat exchange channel is attached to the at least two driving circuit boards.

94. The electric propulsion device according to claim 93, characterized in that The driving module further includes a driving cooling plate, the driving cooling plate is provided with a driving cooling channel, the driving cooling channel forms the heat exchange cavity, and the at least two driving circuit boards are attached to the driving cooling plate.

95. The electric propulsion device according to claim 91, characterized in that The driving module is provided with a driving circuit board and a heat-conducting adhesive layer, wherein the heat-conducting adhesive layer is coated on the driving circuit board, and the driving module is thermally coupled with the insulating lubricating liquid in the heat exchange cavity through the heat-conducting adhesive layer.

96. The electric thruster of claim 61, wherein: The heat exchange device includes a battery module.

97. The electric propulsion device according to claim 96, characterized in that It also includes a control end. When the temperature of the battery module is higher than a first set temperature, the control end pumps the insulating lubricating liquid below the first set temperature to the battery module for heat exchange through the power pump and the control valve; when the temperature of the battery module is lower than a second set temperature, the control end pumps the insulating lubricating liquid above the second set temperature to the battery module for heat exchange through the power pump and the control valve.

98. The electric propulsion device according to claim 97, characterized in that The insulating lubricating liquid having a temperature lower than the first set temperature comes from the insulating lubricating liquid in the cavity.

99. The electric propulsion device according to claim 97, characterized in that The insulating lubricating liquid having a temperature higher than the second set temperature comes from the insulating lubricating liquid after heat exchange with the above-water heat exchange device.

100. The electric propulsion device according to claim 98, characterized in that The insulating lubricating liquid having a temperature higher than the second set temperature comes from the insulating lubricating liquid after heat exchange with the motor.

101. The electric propulsion device according to claim 61, characterized in that It also includes a steering system, which is an electric steering system. The steering system includes a steering motor, and the steering motor is thermally coupled to the heat exchange cavity to exchange heat with the insulating lubricating fluid.

102. The electric propulsion device according to claim 101, characterized in that The steering system further includes a steering drive module for controlling the steering motor. The steering drive module is thermally coupled to the heat exchange cavity to exchange heat with the insulating lubricating fluid.

103. The electric propulsion device according to claim 61, characterized in that It also includes a steering system, which is an electro-hydraulic steering system. The steering system includes an electro-hydraulic steering motor and a steering hydraulic cylinder. The steering hydraulic cylinder is provided with a steering fluid inlet and a steering fluid outlet. The steering fluid inlet and the steering fluid outlet are both connected to the circulating flow path. The steering fluid inlet and the steering fluid outlet are both provided with control valves. The insulating lubricating fluid can enter the steering hydraulic cylinder along the circulating flow path.

104. The electric propulsion device according to claim 103, characterized in that The electro-hydraulic steering motor is thermally coupled to the heat exchange cavity to exchange heat with the insulating lubricating fluid.

105. The electric thruster of claim 61, wherein: It also includes a steering system, which is a hydraulic steering system. The steering system includes a steering hydraulic cylinder. The steering hydraulic cylinder is provided with a steering fluid inlet and a steering fluid outlet. The steering fluid inlet and the steering fluid outlet are both connected to the circulating flow path. The steering fluid inlet and the steering fluid outlet are both provided with control valves. The insulating lubricating fluid can enter the steering hydraulic cylinder along the circulating flow path.

106. The electric thruster of claim 61, wherein: It also includes a tilting system, which is an electric tilting system. The tilting system includes a tilting motor. The tilting motor is thermally coupled to the heat exchange cavity to exchange heat with the insulating lubricating liquid.

107. The electric propulsion device according to claim 106, characterized in that The lifting system further includes a lifting drive module for controlling the lifting motor, and the lifting drive module is thermally coupled to the heat exchange cavity to exchange heat with the insulating lubricating liquid.

108. The electric propulsion device according to claim 61, characterized in that It also includes a lifting system, which is an electro-hydraulic lifting system. The lifting system includes an electro-hydraulic lifting motor and a lifting hydraulic cylinder. The lifting hydraulic cylinder is provided with a lifting liquid inlet and a lifting liquid outlet. Both the lifting liquid inlet and the lifting liquid outlet are connected to the circulating flow path. Both the lifting liquid inlet and the lifting liquid outlet are provided with control valves. The insulating lubricating liquid can enter the lifting hydraulic cylinder along the circulating flow path.

109. The electric propulsion device according to claim 108, characterized in that The electro-hydraulic lifting motor is thermally coupled to the heat exchange cavity to exchange heat with the insulating lubricating fluid.

110. The electric thruster according to claim 61, characterized in that It also includes a lifting system, which is a hydraulic lifting system. The lifting system includes a lifting hydraulic cylinder. The lifting hydraulic cylinder is provided with a lifting liquid inlet and a lifting liquid outlet. The lifting liquid inlet and the lifting liquid outlet are both connected to the circulation flow path. The lifting liquid inlet and the lifting liquid outlet are both provided with control valves. The insulating lubricating liquid can enter the lifting hydraulic cylinder along the circulation flow path.

111. A movable device in water area, characterized in that: It comprises a water area carrier and an electric propeller as described in claims 1 to 110, wherein the electric propeller is connected to the water area carrier.

112. The movable device in water area according to claim 111, characterized in that: It also includes a battery module arranged on the water body, and the battery module is electrically connected to the electric propeller.

113. The movable device in water area according to claim 111, characterized in that: It also includes a steering wheel arranged on the water body carrier, the steering wheel is connected to the circulating flow path, and the insulating lubricating liquid can be coupled to the steering wheel through the circulating flow path.

114. The movable device in water area according to claim 113, characterized in that: The steering of the steering wheel can adjust the flow control direction of the insulating lubricating fluid.

115. The movable device in water area according to claim 113, characterized in that: The steering wheel obtains steering resistance force through the flow resistance of the insulating lubricating fluid.

116. The movable device in water area according to claim 111, characterized in that: It also includes a driving module arranged on the water area carrier, and the circulating flow path is connected to the driving module to perform heat exchange on the driving module.

117. The movable device in water area according to claim 111, characterized in that: It also includes a carrier device arranged on the water area carrier, and the circulation flow path is connected to the carrier device to perform heat exchange on the carrier device.

Images