Below-Deck Electric Boat Battery Layout for Wake Sports
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Solution Overview
Problem
Electric-powered recreational boats or marine vessels less than 27 feet long lack the power to support wake boarding and/or wake surfing, and they have limited user and storage space due to the integration of battery packs above the deck, which reduces available space.
Innovation Solution
The design incorporates two battery packs, one in the hull stern and one in the hull midship, positioned below the deck to maximize space and stability, with high energy density to provide the necessary power for wake sports, and allows easy access and replacement without cutting the hull.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Power
If battery packs are integrated above the deck to provide power, then power capacity is improved, but user space and storage space are reduced
Solution Approach 1:
The battery packs are relocated from the horizontal plane (above deck) to the vertical dimension (below deck), specifically positioned in the hull stern and hull midship regions. This dimensional transition allows the battery packs to occupy unused vertical space within the hull structure, thereby providing full power capacity while preserving all deck-level user and storage spaces.
2Use of energy by moving object
If battery packs are positioned to maximize power density, then energy density is improved, but accessibility for maintenance is reduced
Solution Approach 1:
The battery system is segmented into multiple separate battery packs positioned at different locations (hull stern and hull midship) rather than one large centralized pack. This segmentation allows each individual battery pack to be accessed and maintained independently through accessible hatches, improving maintenance accessibility while maintaining high overall energy density through optimized distribution.
Solution Approach 2:
Access hatches serve as intermediary elements between the external maintenance environment and the battery packs located below deck. These hatches provide controlled access points that allow maintenance personnel to reach the battery packs without compromising the structural integrity or watertightness of the hull, thereby maintaining both energy density and ease of repair.
3Area of stationary object
If battery packs are placed in hull stern and hull midship below deck, then user space and storage space are maximized, but power delivery for wake sports may be insufficient
Solution Approach 1:
Multiple battery packs positioned at different locations (hull stern and hull midship) are electrically merged into a unified power system that delivers combined power to the motor. This merging of distributed battery packs achieves total power delivery equivalent to or exceeding a single large battery pack, thereby enabling wake sports performance while maximizing user and storage space.
Data Source
AI summary
A marine vessel includes a hull assembly, and the hull assembly includes a deck assembly, a first battery assembly, a second battery assembly and an electric motor assembly. The deck assembly is contained within the hull assembly. The first battery assembly is located completely under the deck assembly. The second battery assembly is located completely under the deck assembly and is physically separate from the first battery assembly. The electric motor assembly receives electric power from the first battery assembly and the second battery assembly to propel the hull assembly through water during operation.