Electric outboard engine for ship

Abstract

The utility model discloses an electric outboard engine for a ship, which comprises a cross beam mounting module and a propelling module, and the cross beam mounting module is used for mounting the electric outboard engine on a cross beam of the ship; the propulsion module is connected to the cross beam mounting module, the propulsion module comprises a motor and an electronic speed controller, the motor and the electronic speed controller are both thermally coupled with a shell of the propulsion module, and the propulsion module is immersed in water during operation, so that the ambient temperature of the water provides heat dissipation for the motor and the electronic controller.

Description

Technical Field

[0001] The utility model relates to the field of outboard engines, in particular to an electric outboard engine for ships. Background Art

[0002] Outboard motors (OBMs) have been used to propel small boats for decades, and until recently, all were powered by gasoline or diesel internal combustion engines (ICE). These outboard motors range in power from 1.5 hp to 600 hp, and can propel boats from small kayaks to medium-sized yachts. The smallest OBMs are portable and can be removed from the boat for storage or maintenance, while OBMs 15 hp and above tend to need to be permanently fixed to the boat. These boats can be used for sports and recreational activities in lakes or rivers, or as tenders on yachts, and can also be used for commercial purposes at reservoirs / marinas / ports, or for security / military operations.

[0003] With advances in electric motor and battery technology, electric outboard motors (eOBMs) have become commercially viable, with a few products currently on the market. Most of these products are in the range of less than 10 horsepower or greater than 40 horsepower. Small eOBMs are different from traditional internal combustion engines in that the electric motor is inside the engine, driving the propeller directly, while large eOBMs are usually traditional outboard engines, but the internal combustion engine is replaced by an electric motor, retaining the shaft and gear system. Small eOBMs can be handled by one or two people, while large eOBMs require lifting equipment or three to four people for installation / removal.

[0004] To power the eOBM, manufacturers offer batteries that can be used on board ships. These batteries and their components are often adapted from electric vehicles (EVs) and tend to be large, heavy, and have modest power density. In addition, these batteries typically use adapted land-based connectors and components that are not fully waterproof and are not suitable for marine environments, especially those filled with salty seawater. Using traditional land-based connectors results in very unsafe exposed electrical connections that could result in user injury or battery damage. Failure of non-marine connectors can also affect the reliability of the entire system, often rendering traditional eOBMs inoperable.

[0005] Another problem with traditional eOBMs is size. Small eOBMs, such as those with an output power of less than 10 horsepower (10hp), while lightweight and easy to carry, are not powerful enough to be used in any waters with slight currents or waves, such as coastal or tidal waters. In situations where a boat needs to move against the current or waves, a boat using such a traditional small eOBM may not have enough power to move against the current and / or waves, and may even be pushed backward by the current or waves. However, large eOBMs, such as those with an output power of more than 20 horsepower (20hp), can generate enough power to fight against the current and waves, but they are too large and heavy to be installed on a small boat, and they cost much more than small eOBMs.

[0006] Another problem with traditional electric outboards is the cooling of the motor and electronic speed controller (ESC). Since the ESC is located above the water, the larger electric outboards require air closed loop / open loop cooling, or liquid closed loop / open loop cooling for the ESC. This makes the air fan likely to fail due to corrosion, and the liquid loop may fail due to pump failure or blockage of seawater and / or coolant in the cooling system pipes.

[0007] However, another problem is that trimming smaller conventional electric outboards is mechanically challenging because a large portion of the total weight of such electric outboards is located on the propeller due to the motor. Since the tiller is not designed to act as a lever arm, the user needs to pull the motor up from outside the boat. When the motor needs to be raised out of the water quickly, such as in shallow water to avoid running aground or in deep water to avoid fishing nets or other underwater obstacles, the tiller can hit the boat deck before the motor is fully raised, thus preventing the motor from being raised.

[0008] Another problem is that conventional electric outboards require a pair of power cables and a separate multi-core data cable to operate the electric outboard with batteries. These power cables and data cables are usually not marine-specific connectors, which cannot ensure that seawater will not enter the connectors, causing short circuits or corrosion of the connector pins and sockets. In addition, due to the thin protective insulation layer, the thin data cables are easily damaged, and the thin data pins / sockets are also extremely susceptible to corrosion.

[0009] There are other problems with the throttle handle, tiller handle and transom-mounted module of traditional electric outboard motors. The throttle handle of traditional electric outboard motors can be rotated in both forward and reverse directions (forward and reverse), which may cause users to rotate the throttle handle to the wrong direction, causing accidents. As for the tiller handle, the traditional eOBM tiller handle cannot be completely folded up when not in use, hindering the movement of the rear part of the hull. For the transom-mounted module, the traditional eOBM is integrated with the main body, which makes the entire system heavier and more difficult to carry and operate when installing or removing the eOBM on the boat.

[0010] Therefore, there is a need for an electric outboard motor that overcomes the shortcomings of conventional electric outboard motors while providing a portable electric outboard motor that is capable of powerful, quiet, and efficient operation of a watercraft. Utility Model Content

[0011] The utility model aims to provide an electric outboard motor for a ship which has sufficient power to propel the ship upstream and which is compact, lightweight and can be removed from the ship by one person when not in use. The battery and components used in the electric outboard motor are specially designed and tested for saltwater marine environments.

[0012] The above-mentioned purpose of the utility model is achieved through the following technical solutions:

[0013] An electric outboard motor for a ship comprises a transom mounting module for mounting the electric outboard motor on a transom of a ship; and a propulsion module connected to the transom mounting module, the propulsion module comprising a motor and an electronic speed controller, wherein the motor and the electronic speed controller are both thermally coupled to a housing of the propulsion module, and the propulsion module is immersed in water during operation so that the ambient temperature of the water provides heat dissipation for the motor and the electronic speed controller.

[0014] In a preferred example, the utility model can be further configured as follows: it also includes a gear box to connect the motor shaft of the motor to the propeller shaft.

[0015] In a preferred example, the utility model can be further configured as follows: the gear box is configured as a self-lubricating planetary gear box.

[0016] In a preferred example, the utility model can be further configured as follows: the electronic speed controller is configured as a multi-layer electronic speed controller.

[0017] In a preferred example, the utility model can be further configured as follows: the shell of the propulsion module includes at least one electrochemical corrosion resistant zinc anode.

[0018] In a preferred example, the utility model can be further configured as: also including an anti-grounding fin connected to the propulsion module.

[0019] In a preferred example, the utility model can be further configured as: also including a rod module connected to the propulsion module, wherein the rod module includes a steering friction clamp and a dovetail groove, and the dovetail groove is configured to firmly engage with the mounting dovetail groove of the beam mounting module so as to install the electric outboard motor on the beam of the ship.

[0020] In a preferred example, the utility model can be further configured as follows: the mounting dovetail groove can be rotated sixty-five degrees to facilitate the installation and removal of the electric outboard motor on the transom of the boat.

[0021] In a preferred example, the utility model can be further configured as follows: the beam mounting module further includes a latch for preventing the rod module from being accidentally released from the beam mounting module.

[0022] In a preferred example, the utility model can be further configured as: it also includes a lower anti-ventilation plate, which is connected to the rod module and is located above the propeller connected to the propulsion module, wherein the lower anti-ventilation plate is used to prevent ventilation and cavitation of the propeller under various operating conditions.

[0023] In a preferred example, the utility model can be further configured as follows: the lower anti-ventilation plate includes downward bends at the four corners of the tail of the plate to maximize the high-pressure area and hydrofoil profile around the propeller to increase the lift generated by the lower anti-ventilation plate.

[0024] In a preferred example, the utility model can be further configured as follows: the lower anti-ventilation plate includes a centerline end that tapers downwardly, which is used to provide a handhold point for operating the electric outboard motor when installing and / or removing the electric outboard motor.

[0025] In a preferred example, the utility model can be further configured as: also including an upper splash plate connected to the rod module and the lower anti-ventilation plate, and the upper splash plate is used to suppress the splashes generated by the upward flow of water around the rod module.

[0026] In a preferred example, the utility model can be further configured as follows: it also includes a foldable tiller handle, the foldable tiller handle includes a first joint and a second joint, the first joint is used to fold the foldable tiller handle upward and lock it at ninety degrees, and the second joint is used to fold the foldable tiller handle onto itself.

[0027] In a preferred example, the utility model can be further configured as: further comprising a throttle handle mechanically connected to the foldable tiller handle and electrically connected to the electronic speed controller.

[0028] In a preferred example, the utility model can be further configured as follows: the foldable tiller handle also includes a tiller handle magnetic switch for controlling the operation of the electric outboard motor.

[0029] In a preferred example, the utility model can be further configured as: further comprising a trip computer, the trip computer comprising a processor, a memory and a GPS component, and the trip computer is connected to an electronic speed controller.

[0030] In a preferred example, the utility model can be further configured as follows: it also includes a display, which is connected to the trip computer and is used to display the operating information of the electric outboard motor to the user.

[0031] In a preferred example, the utility model can be further configured as: further comprising a battery module and an electrical connector, wherein the electrical connector connects the battery module with the motor and the electronic speed controller of the propulsion module.

[0032] In a preferred example, the utility model can be further configured as follows: it also includes a remote throttle handle module, which is used to be connected to the propulsion module to remotely control it.

[0033] In summary, the beneficial technical effects of the utility model are:

[0034] The motor and electronic speed controller (ESC) of the eOBM of the present invention are located in the water and do not require internal liquid cooling, thereby forming a waterproof system that is completely cooled by external seawater. Therefore, the eOBM according to the present invention is completely emission-free and advantageously produces low noise and vibration, which is important when operating in many natural water environments. In addition, the eOBM according to the present invention can be advantageously suitable for installation under the ship as a drive pod or integrated with a lifting hydrofoil as a hydrofoil drive, thereby providing a variety of optional uses.

[0035] The eOBM of the present invention has a tiller that can be used to push the motor up from inside the boat, which makes it safer and less clumsy for the user. If the motor needs to be raised quickly, the tiller can be folded up to ensure that the motor is fully raised and unobstructed by the boat deck. The power connector of the eOBM of the present invention is designed as a composite power data harness that protects the data wires and terminates the wires in one multi-purpose connector that accommodates both power and data pins and sockets. The connector housing is designed to be waterproof to ensure that no seawater can enter the connector during use.

[0036] The eOBM of the utility model includes a throttle handle with a safety button, which prevents the throttle handle from twisting in the stern direction unless the button is pressed to ensure that traveling in the stern direction is a conscious action of the user, eliminating any risk of accidents. The tiller of the eOBM according to the utility model includes a double-link tiller, which enables the tiller to be folded and passed over the top of the eOBM, advantageously freeing up space at the rear of the boat. According to the design of the utility model, they are installed on the boat separately, and then, to reduce the weight that the user needs to handle when operating the eOBM to a position. In addition, the mating mechanism is designed for efficient and positive single-action engagement. BRIEF DESCRIPTION OF THE DRAWINGS

[0037] Figure 1 includes Figure 1A and Figure 1B : Figure 1A It is a left front top perspective view of the electric outboard motor of the utility model; Figure 1B It is a left plan view of the electric outboard motor of the utility model.

[0038] Figure 2 includes FIG. 2A to FIG. 2C, describes the structure of the additional components of the electric outboard motor of the utility model: Figure 2A This is a schematic diagram of the battery structure of the electric outboard motor of the utility model; Figure 2B This is a schematic diagram of the structure of an electric connector of an electric outboard motor of the utility model; Figure 2C The utility model is a schematic diagram of the structure of the remote throttle handle module of the electric outboard motor.

[0039] Figure 3 includes FIG. 3A to FIG. 3C : Figure 3A It is a left plan view of the propulsion module of the utility model; Figure 3B It is a left plane sectional view of the propulsion module of the utility model; Figure 3C It is an enlarged left plane sectional view of the propulsion module of the utility model.

[0040] Figure 4 includes Figure 4A and Figure 4B : Figure 4A It is a rear view plan view of the thruster module of the utility model; Figure 4B It is a side plan view of the thruster module of the utility model.

[0041] Figure 5 includes Figure 5A and Figure 5B , describes the rod module of the electric outboard motor of the utility model: Figure 5A It is a left front top perspective view of the rod module of the utility model; Figure 5B It is a left front top perspective sectional view of the rod module of the present invention.

[0042] Figure 6 It is the left front top view of the anti-ventilation and anti-splash module of the utility model.

[0043] Figure 7, including FIG. 7A to FIG. 7B , Fig. 7A It is a left front top perspective view of the tiller throttle handle module of the utility model in the tiller unfolded position; Figure 7B It is a left front top view of the tiller throttle handle module of the utility model in the tiller folding position; Figure 7C It is a left front top view of the tiller handle throttle turning handle module of the utility model in the folded position of the tiller handle part.

[0044] Figure 8 , depicts a left front top view of a display module mounted on a tiller throttle control module of 7A to 7C.

[0045] Figure 9 includes 9A to 9D , describes the beam mounting module of the eOBM according to the present embodiment: Fig. 9A depicts a left rear top perspective view of the tiller throttle tumbler module mounted on the transom mount module; Fig. 9B depicts a left rear top perspective view of the crossbar mounting module in its initial operating position; Fig. 9C depicts a left rear top perspective view of the crossbar mounted module in its maximum trim position; Fig.9D A rear left top perspective view of the crossbar mounting module is depicted in its initial operating position.

[0046] Figure 10 includes Fig. 10A , 10B 10C, depicting the location of the beam mounting module of the utility model: Fig. 10A depicts a left rear top perspective view of the crossbar mounting module in its initial operating position; Fig. 10B depicts a left rear top perspective view of the crossbar mounted module in its maximum trim position; Fig. 10C A rear left top perspective view of the transom mounting module is depicted in its docked position.

[0047] Figure 11 includes Fig.11A and Fig. 11B , describes a perspective view of the battery of the utility model: Fig.11A depicts a top left front perspective view of the battery; Fig. 11B A left front top perspective cutaway view of the battery along line 11 - 11 ′ is depicted.

[0048] Figure 12 includes FIG. 12A to FIG. 12D , describes a perspective view of the electrical connector of the utility model: Fig. 12A depicts a top perspective view of a female electrical connector; Fig. 12B depicts a top perspective view of a male electrical connector; Fig. 12C depicts a front perspective view of a female electrical connector; Fig.12D A front perspective view of a male electrical connector is depicted.

[0049] Fig.13 A left front top view of a remote throttle grip module according to the present embodiment is depicted.

[0050] Fig.14 A flow chart of a method for starting the eOBM power supply according to this embodiment is described.

[0051] Fig.15 A flow chart of a method for shutting down the eOBM power supply according to this embodiment is described.

[0052] In the figure, 115, beam mounting module; 905, outer mounting body; 910, inner mounting frame; 915, mounting dovetail groove; 920, mounting clamp; 925, remote steering interface; 930, single-acting fine adjustment lever; 940, latch; 945, bolt hole; 947, bolt slot; 120, propulsion module; 305, motor; 310, electronic speed controller (ESC); 320, gear box; 325, motor shaft; 330, propeller shaft; 340, bearing; 345, shaft seal; 350, motor housing; 355, electronic speed controller end cover; 360 , gearbox end cover; 365, anti-grounding fin; 315, anti-galvanic corrosion zinc anode; 125, thruster module; 410, propeller; 420, spline; 425, rubber bushing; 430, zinc anode; 130, rod module; 515, fairing; 520, pivot; 525, dovetail groove; 530, steering friction clamp; 510, rod; 630, lower bend; 640, centerline end; 135, anti-ventilation and anti-splash module; 610, lower anti-ventilation plate (AVP); 620, upper anti-splash plate (ASP); 710, tiller throttle handle module; 140, Tiller module; 720, tail tiller; 725, middle tiller; 727, second joint; 729, first joint; 145, throttle handle module; 730, throttle handle; 735, safety button; 737, throttle handle friction twist ring; 740, tiller magnetic switch; 145, throttle handle module; 150, display module; 810, screen; 815, panel; 820, button; 830, waterproof display box; 250, battery module; 1105, battery power and management system (BMS); 1110, power (SOC) display; 1115, battery Power switch; 1120, electrical connector; 1125, top of battery box; 1127, bottom of battery box; 1130, handle; 1135, recessed handle; 260, male electrical connector; 265, female electrical connector; 1210, handle; 1215, composite power data harness; 1220, male and female power connectors; 1225, male and female data connectors; 270, remote throttle handle module; 1310, remote throttle handle housing; 1320, display screen; 1330, remote magnetic switch; 1340, single / double rod; 1350, control button. DETAILED DESCRIPTION

[0053] Now the utility model is described in detail with reference to the accompanying drawings. This figure is a simplified schematic diagram, which only illustrates the basic structure of the utility model in a schematic manner, so it only shows the components related to the utility model.

[0054] An object of the present embodiment is to provide an electric outboard motor (eOBM) that has sufficient power to propel a boat against currents and waves, but is compact and light enough to be removed from the boat by one person when not in use. The eOBM uses batteries and components designed and tested specifically for saltwater marine environments. In accordance with the present embodiment, the motor and electronic speed controller (ESC) of the eOBM are located in the water and do not require internal liquid cooling, thereby forming a waterproof system that is completely cooled by external seawater. Therefore, the eOBM according to the present embodiment is completely emission-free and advantageously produces low noise and vibration, which is important when operating in many natural water environments. In addition, the eOBM according to the present embodiment can be advantageously suitable for installation under the boat as a drive pod or integrated with a lifting hydrofoil as a hydrofoil drive, thereby providing a variety of optional uses.

[0055] The eOBM according to this embodiment has a tiller that can be used to push the motor up from inside the boat, which makes it safer and less clumsy for the user. If the motor needs to be raised quickly, the tiller can be folded up to ensure that the motor is fully raised and unobstructed by the boat deck. The power connector of the eOBM according to this embodiment is designed as a composite power data harness that protects the data lines and terminates the lines in one multi-purpose connector that accommodates both power and data pins and sockets. The connector housing adopts a waterproof design to ensure that no seawater can enter the connector during use.

[0056] The eOBM according to the present embodiment includes a throttle handle with a safety button that prevents the throttle handle from twisting in the stern direction unless the button is pressed to ensure that traveling in the stern direction is a conscious action of the user, eliminating any risk of accidents. The tiller of the eOBM according to the present embodiment includes a double-link tiller that enables the tiller to fold and pass over the top of the eOBM, advantageously freeing up space at the rear of the boat. Designed according to the present embodiment, they are installed separately on the boat and then to reduce the weight that the user needs to handle when maneuvering the eOBM into position. In addition, the mating mechanism is designed for efficient, positive single-action engagement.

[0057] See also Figure 1A and Figure 1B The left front top perspective view 100 and the left plan view 105 illustrate the eOBM according to the present embodiment. The eOBM 110 includes a drive module and a crossbar mounting module 115. The drive module includes a propulsion module 120, a thruster module 125, a rod module 130, a ventilator and splash guard module 135, a tiller module 140, a throttle handle module 145, and a display module 150.

[0058] Reference Figure 2A , 2B2C, perspective views 200, 210, 220 depict other components of the eOBM according to this embodiment. View 200 depicts a battery module 250 for providing power, and view 210 depicts a male electrical connector 260 and a female electrical connector 265. View 210 shows the male electrical connector 260 and the female electrical connector 265 for providing a waterproof electrical connection between the battery module 250 and the drive module of the eOBM 110. View 220 shows a remote throttle handle module 270 for enabling remote operation of the eOBM 110, which will be described below.

[0059] Reference Figure 3A , 3B 3A, 3B and 3C, left plan views 300, 370, 380 depict the propulsion module 120 of the eOBM 110 according to the present embodiment. The left plan view 300 describes the propulsion module 120, and the left plan cross-sectional view 370 and the enlarged view 380 describe the interior of the propulsion module 120. The propulsion module 120 includes a motor 305, an electronic speed controller (ESC) 310, a gearbox 320, a motor shaft 325, a propeller shaft 330, a bearing 340, a shaft seal 345, a motor housing 350, an electronic speed controller end cover 355, a gearbox end cover 360 and an anti-grounding fin 365.

[0060] Motor 305 is a custom designed brushless DC (BLDC) motor that is connected to gearbox 320 to provide the required speed and torque to turn the propeller and generate thrust to propel the boat. The motor stator is mounted inside the motor housing 350 so that water cooling can be directly applied to the outer surface of the motor housing 350. Motor 305 is capable of weakening the magnetic field at high speeds to achieve increased torque, which is necessary to propel the boat faster.

[0061] The motor 305 is controlled by a multi-layered electronic speed controller 310, which has the advantage that the entire electronic speed controller 310 can be mounted on the front end of the motor 305 without increasing the diameter of the motor housing 350. The electronic speed controller 310 is capable of handling the high currents and voltages required to rotate the motor 305, which generate a large amount of heat that needs to be dissipated quickly in order to continue to operate at high currents. This is best achieved by thermally connecting the base of the electronic speed controller 310 to the interior of the electronic speed controller end cap 355 to dissipate heat from the propulsion module being submerged in the ambient water. The electronic speed controller end cap 355 is designed to be mounted on the front end of the motor housing 350, forming a watertight seal with dual O-rings while allowing for installation and assembly. The method of securing the electronic speed controller end cap 355 to the motor housing 350 is unique in that it eliminates the need for axial screws and uses smaller radial screws.

[0062] The motor housing 350 can be assembled with the motor 305 inside simply and quickly, and the motor housing 350 is connected to the rod module 130. The combination of extrusions and castings allows the motor housing 350 and the rod module 130 to be connected quickly and firmly, thereby ensuring safe and effective transmission of the propeller force to the hull.

[0063] The gearbox 320 located at the rear of the motor is a separate gearbox mounted on the motor 305 with the motor shaft 325 entering from the front and the propeller shaft 330 exiting from the rear. The gearbox 320 is low noise, self-lubricating and does not require any maintenance. The compact design of the gearbox 320 allows the gearbox to be mounted within the gearbox end cap 360, forming a watertight seal with double O-rings. The method of securing the gearbox end cap 360 to the motor housing 350 is unique in that the axial screws are eliminated and smaller radial screws are used without affecting the structural strength to transfer thrust from the propeller to the motor housing 350.

[0064] The arrangement of the double bearing 340 and the double shaft seal 345 on the propeller shaft 330 ensures another watertight seal and rigid support of the propeller shaft, thereby effectively suppressing the strong axial and radial forces and vibrations to which the propeller shaft is subjected during operation. The double shaft seal 345 is specially designed to be resistant to high temperatures and seawater.

[0065] The replaceable anti-grounding fin 365 allows the user to replace it if it becomes damaged while operating the boat in shallow water. The galvanic corrosion resistant zinc anode 315 is also fixed to the anti-grounding fin 365 base to facilitate periodic replacement as the anode will be consumed, especially in seawater.

[0066] Figure 4A and 4B A rear plan view 400 and a side plan view of the thruster module 125 according to this embodiment are depicted, respectively. The propeller 410 is customized to match the characteristics of the motor 305 to achieve the desired performance. The splines 420 and rubber bushings 425 reduce vibration and improve propeller performance. The zinc anodes 430 at the ends of the propeller 410 help protect the propeller 410 and the propeller shaft 330 from electrochemical corrosion.

[0067] See also Figure 5A and 5B, left front top perspective views 500, 550 depict the rod module 130, wherein view 550 depicts a cross-sectional view of the rod module 130. The rod module 130 includes a rod 510 with a fairing 515, a pivot 520, a dovetail slot 525, and a steering friction clip 530. The rod 510 has an extruded profile designed to improve fluid dynamic efficiency and structural strength. The rod 510 connects the propulsion module 120 to the transom mounting module 115 to effectively transmit the thrust of the propeller 410, and also connects the propulsion module 120 to the tiller module 140 and the throttle handle module 145 to allow the user to effectively and robustly control the steering and speed of the boat. The rod is composed of a strong metal (such as aluminum or titanium) and is computer numerically controlled (CNC) cut to match the pivot 520 that supports the joystick. The pivot 520 supports the steering friction clip 530 and the dovetail slot 525, which are designed to accurately connect the rod 510 to the transom mounting module 115.

[0068] The steering friction clamp 530 allows fine adjustment of the force required to turn the eOBM 110 to steer the boat. If the steering friction clamp 530 is too light, the boat will not be able to maintain a stable heading, and if the steering friction clamp 530 is too tight, it will be difficult for the user to quickly steer the boat. The dovetail groove 525 is designed for one-time mounting of the eOBM 110 to the transom mounting module 115 to provide a secure engagement with the transom mounting module 115, thereby fully transmitting the thrust from the propeller 410 to the boat without any play, especially when changing direction between forward and reverse. The fairing 515 is designed with a part assembly design and no exposed screws, and is durable and seawater resistant under strong UV rays.

[0069] Figure 6 A left front top view 600 of the anti-ventilation and splash prevention module 135 of the eOBM 110 according to the present embodiment is described. The anti-ventilation and splash prevention module 135 is a combination of a lower anti-ventilation panel (AVP) 610 (also known as an anti-cavitation panel) and an upper splash prevention panel (ASP) 620. The lower anti-ventilation panel 610 is designed to prevent ventilation and cavitation of the propeller under various operating conditions. Its shape maximizes the high pressure area around the propeller 410 through the downward bend 630 at the four corners of the tail of the panel. The hydrofoil shape of the lower anti-ventilation panel 610 also increases the lift generated by the lower anti-ventilation panel 610, which helps to increase the level flight time of the ship. The centerline end 640 of the lower anti-ventilation panel 610 is also tapered downward to provide a reliable handhold point for operating the eOBM 110 when installing and removing the eOBM 110.

[0070] The upper splash plate 620 is designed to suppress any water splash caused by the upward flow of water around the rod 510. The upper splash plate 620 is manufactured together with the lower vent plate 610 and can be moved vertically together with the lower vent plate 610 to optimize the settings of different boats and different propellers 410.

[0071] See also Fig. 7A , 7B 7C, left front top perspective views 700, 750, 770, depict the tiller throttle twist module 710 of the eOBM 110 according to the present embodiment. The tiller throttle twist module 710 comprises the tiller module 140 and the throttle twist module 145 (FIG. 1), wherein the tiller module 140 comprises a tail tiller 720 and a middle tiller 725, and the throttle twist module 145 comprises a throttle twist 730 and a tiller magnetic switch 740. Perspective view 700 depicts the tiller throttle twist module 710 in a tiller deployed position, perspective view 750 depicts the tiller throttle twist module 710 in a tiller folded position, and perspective view 770 depicts the tiller throttle twist module 710 in a tiller partially folded position.

[0072] The tail tiller 720 is mounted on the upper end of the pole 510 to support the fairing 515 and the display module 150 and connect the pole 510 to the middle tiller 725. The middle tiller 725 can be rotated at the second joint 727 and the first joint 729 to provide flexibility during operation, transportation and storage. During operation, the front first joint 729 between the middle tiller 725 and the throttle handle 730 can be folded up and locked into ninety degrees for more ergonomic low-speed operation, or as a lever arm to trim the motor to the best condition, or to raise the motor when in shallow water. When the boat is anchored or not in use, as shown in the perspective view 750, the two joint joints of the middle tiller 725 can be rotated to fold the throttle handle to the top of the eOBM110, thereby freeing up space at the stern for movement or other activities. When the eOBM110 is carried by hand or transported by a vehicle, as shown in the perspective view 750, the folded tiller is compact and minimizes the storage space required. The foldable tiller means there is no need to remove the tiller from the eOBM110, which saves the hassle of constantly connecting and disconnecting data cables, while also ensuring that no loose parts are lost.

[0073] The throttle handle 730 includes an encoder with an integrated power converter, which enables the throttle handle 730 to accurately detect the change in the rotation angle of the throttle handle and transmit it to the electronic speed controller 310. The handle mechanism can rotate freely in the forward direction, with a maximum rotation angle of forty-five degrees. In order to further increase the speed of the boat, it is necessary to press the safety button 735 at the end of the throttle handle 730 while further rotating the throttle handle from forty-five degrees to ninety degrees. This prevents accidental acceleration of the boat. When rotating the throttle handle 730 in the opposite direction, the safety button 735 must also be pressed to help the user ensure that any reverse action is intentional and not accidental, because conventional internal combustion outboard engines usually only allow the throttle handle to be rotated in one direction, and the gear lever needs to be pulled to shift to reverse gear.

[0074] The throttle grip 730 is spring-returned, so any loosening of the throttle grip 730 will return it to the neutral position. However, if the user desires, the throttle grip friction twist ring 737 can be tightened to achieve the desired throttle feedback, especially if the user desires a more constant throttle level.

[0075] refer to Figure 8 , the left front top perspective view 800 depicts the display module 150 according to the present embodiment. The display module 150 is mounted on the tail tiller 720 and the fairing 515 to provide the user with necessary information. When the eOBM 110 is used with the remote throttle throttle module 270, the display module is integrated into the remote throttle throttle module 270 to provide the same information. The display module 150 includes a screen 810, a panel 815, a trip computer, a button 820 and a waterproof display box 830. The screen 810 is a light-transmitting type with high sunlight visibility, and the panel 815 is a waterproof adhesive type to achieve a clear digital display of the boat speed and range, power, battery power and various alarms.

[0076] The trip computer is a custom designed processor that has multiple functions. These functions include recording data from the electronic speed controller 310 (such as revolutions per minute (rpm), throttle, motor and electronic speed controller temperature and alarms), data from the battery management system (BMS) (such as voltage, current, remaining capacity, battery cell and BMS temperature and alarms), and data from the GPS (such as speed and time). The functions of the trip computer may also include processing data displayed on the screen, such as boat speed and range, power, battery level and alarms, and providing a Bluetooth link with a mobile application for diagnostics and remote troubleshooting. In addition, the functions of the trip computer may also include implementing a dual safety function to ensure that the eOBM110 will cut off power when the tiller magnetic switch 740 is released, and to ensure that the battery will not be charged unless the battery is connected to the eOBM110 and the tiller magnetic switch 740 is in the open state. The trip computer includes a processor, memory, GPS components and other electronic components, which are connected to the electronic speed controller 310, the battery management system, the local throttle handle 730 and the remote throttle handle module 270 through a controller area network bus system (i.e., a CANBUS system). The waterproof button 820 allows the user to change the settings on the screen 810.

[0077] Fig. 9A , 9B 9C and 9D depict perspective views 900, 950, 970, 990 of the beam mounting module 115 according to this embodiment. The beam mounting module 115 includes an outer mounting body 905, an inner mounting frame 910, a mounting dovetail groove 915, a mounting clip 920 and a remote steering interface 925.

[0078] The outer mounting body 905 provides a framework for the inner mounting frame 910 to transfer thrust from the rod 510 to the beam mounting module 115 while being able to rotate to adjust the trim angle or for beaching. The single-action fine-trim adjustment lever 930 allows for easy rotation of the eOBM 110 without releasing other latches or levers. The mounting dovetail 915 allows for quick engagement of the eOBM 110 and features a latch 940 to prevent accidental release of the eOBM 110 from the beam mounting module 115. The mounting dovetail 915 can rotate sixty-five degrees to facilitate one-person installation and removal of the eOBM 110.

[0079] The mounting clip 920 fixes the transom mounting module 115 to the transom plate of the boat. The bolt holes 945 on the transom mounting module 115 allow the transom mounting module 115 to be more permanently fixed to the transom of the boat, and the bolt holes 945 and bolt slots 947 are also used to adjust the mounting height.

[0080] The Remote Steering Interface 925 for Remote Steering Cylinders is designed for integration with third party steering systems to allow remote steering and throttle control from the helm station.

[0081] Fig. 10A , 10B 10C and 10C depict left rear top perspective views 1000, 1030, 1060 of different positions of the cross-beam mounting module 115 during operation according to an embodiment of the present invention. View 1000 depicts the initial operating position of the cross-beam mounting module 115. View 1030 shows the cross-beam mounting module 115 in a maximum trim position. View 1060 shows the cross-beam mounting module 115 in a drive-away position.

[0082] Fig.11A and 11B The front upper left perspective views 1100 and 1150 of the battery module 250 according to an embodiment of the present invention are described, wherein the view 1150 describes a cross-sectional view of the battery along line 11-11'. The battery module 250 includes a battery power and management system (BMS) 1105, a state of charge (SOC) display 1110, a power switch 1115, an electrical connector 1120, and a waterproof battery box having a battery box top 1125, a battery box bottom 1127, and a handle 1130.

[0083] The battery pack is composed of battery cells, which are made into a battery pack that meets the overall battery requirements such as battery performance, capacity, weight and size. The BMS controls the battery cells and interfaces with the ESC310 to ensure that the battery power and management system 1105 operates within the design range. The BMS also provides low voltage power to the eOBM and powers the trip computer while not providing full power to the ESC310 until the tiller magnetic switch 740 is in place. When the tiller magnetic switch 740 is in place, the trip computer is triggered, sending a signal to the BMS to provide full power and another signal to the ESC310 to allow operation. The design of the BMS also allows multiple batteries to be connected in a "daisy chain" manner to extend the range and endurance of the vessel, eliminating the need for an external power management system to coordinate and regulate the power of multiple parallel batteries.

[0084] A battery charge indicator 1110 with a power switch 1115 displays the remaining capacity of the battery and an alert from the BMS. The power switch 1115 is used to power the trip computer, which in turn signals the BMS to provide full charge when the tiller magnetic switch 740 is in place.

[0085] One of the two power data electrical connectors 1120 is used to connect the battery to the eOBM 110, and the other is used to "daisy chain" multiple batteries. These electrical connectors 1120 are custom designed to meet the requirements of a single connector for both power and data, and to ensure waterproofness when connected.

[0086] Compared to metal cases, the molded plastic waterproof case ensures that the battery pack is always dry and remains cool in the sun. The top handle 1130 and the side recessed handles 1135 make carrying the battery more ergonomic and also ensure safe handling, especially when putting the battery into a confined space such as a fuel cabinet or storage room.

[0087] A 20A DC charger is provided, designed to charge the battery using household or vehicle AC power. The charger has built-in safety features to prevent over-voltage and under-voltage charging. Chargers with other power ratings are also available depending on the available power source.

[0088] See also Figures 12A to 12D , front perspective views 1200, 1250 depict male electrical connector 260 according to this embodiment, and front perspective views 1230, 1280 depict female electrical connector 265. The connectors include IP67 male and female power connectors 1220, male and female data connectors 1225, ergonomic handle 1210, composite power data harness 1215, and a separate optional data cable (not shown) for remote throttle module 270.

[0089] The male and female power connectors 1220 have specially designed pins and sockets that have twice the surface area of ​​similar sized pins and sockets, increasing the maximum current that the pins and sockets can conduct. In addition, the pins and sockets are designed to be spark proof. The male and female data connectors 1225, the smaller 6 CANBUS pins and sockets are also integrated into the same male and female electrical connectors 260 and 265, eliminating the need for separate data cables, which usually have smaller pins and sockets that are more susceptible to corrosion.

[0090] The composite power data harness 1215 combines two power cables and a 6-core data cable into a flat harness, protecting the wires from physical damage and exposure to direct sunlight and sea water.

[0091] refer to Fig.13 , the left front top view 1300 describes the remote throttle handle module 270 according to this embodiment. The remote throttle handle module 270 is composed of a remote throttle handle housing 1310, a display screen 1320, a remote magnetic switch 1330 and a single / double rod 1340.

[0092] The remote throttle housing 1310 is designed to include a display screen 1320, a remote magnetic switch 1330, and control buttons 1350, which are the same as the display module 150 and the tiller magnetic switch 740 used in the display module 150 and the middle tiller 725. The remote throttle housing 1310 is waterproof to protect the internal components. The remote throttle module 270 can be used with a single lever 1340 with a single encoder for single or synchronized dual eOBM operation, or with a dual lever 1340 for independent dual eOBM operation. The control lever single / dual lever 1340 can be pushed forward to obtain forward thrust, or pulled back to obtain reverse thrust.

[0093] Fig.14 A flowchart 1400 is shown of a method for enabling the eOBM 110 according to the present embodiment.

[0094] ( 1402 ): The user connects a power line between the battery module 250 and the eOBM 110 .

[0095] ( 1404 ): Next, the user presses the power switch 1115 button on the battery module 250 .

[0096] (1406): The battery charge indicator 1110 is illuminated, the low voltage line is connected, and the main power line remains off.

[0097] (1408): Next, the travel controller of the display module 150 turns on and receives battery information, such as charging status and BMS information; the ESC 310 is not turned on yet.

[0098] (1410): When the tiller handle magnetic switch 740 is activated, the Hall sensor is triggered and sends a signal to the trip computer to activate the battery module 250 and ESC310.

[0099] (1412): The power line is now active, so the ESC310 receives power and receives the activation signal from the trip computer via CANBUS, and then sends the ESC310 data to the trip computer.

[0100] (1414): eOBM is now ready for operation.

[0101] refer to Fig.15 , flowchart 1500 describes a method for shutting down the eOBM power supply according to this embodiment.

[0102] (1502): Once the tiller magnetic switch 740 is removed (ie the tiller magnetic switch 740 is no longer pressed).

[0103] (1504): ESC310 stops receiving its activation signal and issues a zero speed command; at the same time, the Hall sensor is disabled and the BMS of the battery module 250 is disabled.

[0104] (1506): Then, the ESC 310 stops receiving power and the eOBM 110 stops working. However, the trip computer still has power.

[0105] It can be seen that the present embodiment provides a portable eOBM capable of operating a watercraft with high power, quietness and high efficiency. According to the embodiment of the utility model, the eOBM 110 does not emit any exhaust gas at all, and has the advantages of generating low noise and low vibration, which is very important when operating in many natural waters. In addition, the eOBM 110 according to the embodiment of the utility model can be installed on the bottom of the ship as a drive pod, or integrated with the lifting foil as a foil drive device, thereby providing a variety of optional uses.

[0106] According to this embodiment, the eOBM110 is available in high-power and low-power models, and only slight modifications to the currently designed system architecture are required to adapt to smaller or larger motors. The capacity of the battery pack is also adjustable to match the motor power. Smaller capacity battery packs are suitable for smaller power motors, which is convenient for operation, does not affect the use time, and may not require "daisy chain" connection. Larger power motors require more power to operate within a reasonable range, so multiple "daisy chain"-style large-capacity batteries can be used.

[0107] The propeller 410 of each motor 305 is designed differently to facilitate different usage scenarios, such as high speed, low speed high thrust or low speed towing. In addition, the remote throttle handle module 270 also has other variations that can be installed on different boats. For example, a side-mounted remote throttle lever with an independent display device can be installed on the console of the boat.

[0108] Although exemplary embodiments are described in the above detailed description of the utility model, it should be understood that there are a large number of variations. It should be further recognized that the exemplary embodiments of the utility model are merely examples and are not intended to limit the scope, applicability, operation or configuration of the utility model in any way. On the contrary, the above detailed description will provide a convenient roadmap for those skilled in the art to implement the exemplary embodiments of the utility model. It goes without saying that various changes can be made to the functions and step arrangements and operating methods described in the exemplary embodiments without departing from the scope of the utility model as set forth in the appended claims.

[0109] The embodiments of this specific implementation method are all preferred embodiments of the utility model, and are not intended to limit the protection scope of the utility model. Therefore, all equivalent changes made based on the structure, shape, and principle of the utility model should be included in the protection scope of the utility model.

Claims

1. An electric outboard motor for a ship, characterized in that: The invention comprises a transom mounting module for mounting the electric outboard motor on the transom of the boat; and a propulsion module connected to the transom mounting module, the propulsion module comprising a motor and an electronic speed controller, wherein the motor and the electronic speed controller are thermally coupled to the housing of the propulsion module, and the propulsion module is immersed in water during operation so that the ambient temperature of the water provides heat dissipation for the motor and the electronic speed controller.

2. The electric outboard motor for a ship according to claim 1, characterized in that: A gearbox is also included to connect the motor shaft of the motor to the propeller shaft.

3. The electric outboard motor for a ship according to claim 2, characterized in that: The gearbox is configured as a self-lubricating planetary gearbox.

4. The electric outboard motor for a ship according to claim 1, characterized in that: The electronic speed controller is configured as a multi-layer electronic speed controller.

5. The electric outboard motor for a ship according to claim 1, characterized in that: The outer shell of the propulsion module includes at least one galvanic corrosion resistant zinc anode.

6. The electric outboard motor for a ship according to any one of claims 1 to 5, characterized in that: Also included is an anti-grounding fin connected to the propulsion module.

7. The electric outboard motor for a ship according to claim 1, characterized in that: Also included is a rod module coupled to the propulsion module, wherein the rod module includes a steering friction clip and a dovetail slot configured to securely engage with a mounting dovetail slot of the transom mounting module to mount the electric outboard motor to the transom of the boat.

8. The electric outboard motor for a ship according to claim 7, characterized in that: The mounting dovetail can be rotated sixty-five degrees to facilitate installation and removal of the electric outboard motor to the transom of the boat.

9. The electric outboard motor for a ship according to claim 7 or 8, characterized in that: The crossbar mounting module also includes a latch for preventing accidental release of the pole module from the crossbar mounting module.

10. The electric outboard motor for a ship according to claim 7 or 8, characterized in that: It also includes a lower anti-ventilation plate, which is connected to the rod module and is located above the propeller connected to the propulsion module, wherein the lower anti-ventilation plate is used to prevent ventilation and cavitation of the propeller under various operating conditions.

11. The electric outboard motor for a ship according to claim 10, characterized in that: The lower anti-ventilation plate includes downward bends at the four corners of the tail of the plate to maximize the high-pressure area and hydrofoil profile around the propeller to increase the lift generated by the lower anti-ventilation plate.

12. The electric outboard motor for a ship according to claim 11, characterized in that: The lower anti-draft plate includes a centerline end that tapers downwardly for providing a handhold point for operating the electric outboard motor when installing and / or removing the electric outboard motor.

13. The electric outboard motor for a ship according to claim 10, characterized in that: Also included is an upper splash plate connected to the rod module and the lower anti-ventilation plate, the upper splash plate being used to suppress water splashes generated by upward flow of water around the rod module.

14. The electric outboard motor for a ship according to any one of claims 1 to 5, characterized in that: Also included is a foldable tiller handle, the foldable tiller handle comprising a first joint and a second joint, wherein the first joint is used to fold the foldable tiller handle upward and lock it at ninety degrees, and the second joint is used to fold the foldable tiller handle onto itself.

15. The electric outboard motor for a ship according to claim 14, characterized in that: Also included is a throttle handle mechanically connected to the foldable tiller and electrically connected to the electronic speed controller.

16. The electric outboard motor for a ship according to claim 15, characterized in that: The foldable tiller also includes a magnetic tiller switch for controlling electric outboard operation.

17. The electric outboard motor for a ship according to claim 16, characterized in that: Also included is a trip computer including a processor, a memory and a GPS component, the trip computer being connected to an electronic speed controller.

18. The electric outboard motor for a ship according to claim 17, characterized in that: A display is also included, which is connected to the trip computer and is used to display the electric outboard motor operation information to the user.

19. The electric outboard motor for a ship according to claim 1, characterized in that: Also included are a battery module and an electrical connector that connects the battery module to the motor and electronic speed controller of the propulsion module.

20. The electric outboard motor for a ship according to claim 1, characterized in that: Also included is a remote throttle module for connecting to the propulsion module to control it remotely.

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