Separable Electric Outboard Motor Hull Mounting
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Solution Overview
Problem
Electric outboard motors are heavy and large, affecting the maneuverability and portability of boats, as they increase the weight and change the center of gravity, making it difficult to tilt up and store, and potentially causing increased impact during collisions.
Innovation Solution
The electric outboard motor is designed with a separable power supply and control unit connected via a cable, allowing the power supply to be positioned within the hull to balance the center of gravity, and featuring a detachable battery pack system and a communicable control and display section for efficient power management.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Device complexity
If all components (electric motor, rechargeable battery, control unit) are housed together in the outboard motor main body, then the motor can be compact and integrated, but the weight increases significantly and maneuverability decreases
Solution Approach 1:
The outboard motor system is divided into two separate units: the outboard motor main body containing the electric motor and propulsion section, and the power supply section containing the rechargeable battery and control unit. These units are detachably connected via a cable, allowing independent positioning and removal of each component. This segmentation resolves the contradiction by distributing weight across separate units that can be strategically placed.
Solution Approach 2:
The power supply section (rechargeable battery and control unit) is extracted from the outboard motor main body and positioned separately, either within the hull or as an independent unit. This extraction removes the heavy battery mass from the motor assembly, directly reducing the weight of the outboard motor main body while maintaining system functionality through the cable connection.
2Stability of the object's composition
If the power supply section is positioned at the rear of the hull, then the center of gravity shifts backward, but this causes the bow to rise and affects the boat operator's view and control
Solution Approach 1:
The power supply section is designed to be dynamically positionable rather than fixed. It can be attached at multiple locations including the rear, side, or front of the hull, and can be easily moved or removed. This dynamic positioning capability allows the operator to adjust the center of gravity location to achieve optimal balance and viewing conditions for different operating scenarios.
Solution Approach 2:
The power supply section is designed with universal mounting capabilities that allow it to be positioned at various locations on the hull (rear, side, front) or even inside the hull. The detachable connection system enables the same component to serve multiple positioning functions, allowing the operator to optimize both stability and ease of operation by selecting the appropriate position.
3Device complexity
If the outboard motor main body and power supply section are permanently connected, then the system is structurally simple, but portability and ease of storage are reduced
Solution Approach 1:
The system is segmented into two independently detachable units connected by a cable with couplers. This segmentation allows each unit to be handled, transported, and stored separately when not in use, significantly improving portability and storage efficiency while maintaining a simple connection structure through the detachable coupler mechanism.
Solution Approach 2:
The connection between the outboard motor main body and power supply section is designed to be dynamically changeable - permanently connected during operation for structural simplicity, but easily detachable for portability and storage. The coupler mechanism enables rapid transition between connected and separated states, resolving the contradiction between structural simplicity and portability.
Data Source
AI summary
An electric outboard motor to be driven by an electric motor separately includes an electric outboard motor main body including the electric motor and a propulsion section that applies the electric motor as motive power and a power supply section supplying power to the electric motor, in which the electric outboard motor main body and the power supply section are detachably connected by couplers via a cable. Further, the coupler of the cable is allowed to be attached and detached to and from the coupler on a side of the power supply section.