Fuel Cell Watercraft Compartment Segmentation for Safety
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Solution Overview
Problem
Conventional fuel cell watercraft designs face issues with space inefficiency, safety concerns due to hydrogen gas exposure, and vulnerability to weather and salt damage, particularly when fuel cells, batteries, and DC/DC converters are housed together.
Innovation Solution
The design separates hydrogen-related equipment and electrical equipment into isolated storage spaces within the hull, with the fuel cell unit and hydrogen fuel tank in one space and the secondary battery and power regulation means in another, using lid members for closure and sealing to prevent hydrogen exposure and enhance weather resistance.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Device complexity
If the fuel cell unit and hydrogen fuel tank are housed together with the secondary battery and power regulation means in the same storage space, then the device complexity is reduced, but safety is compromised due to potential electric sparks contacting purged hydrogen gas
Solution Approach 1:
The patent divides the storage space into two isolated compartments: a first storage space for hydrogen-related equipment (fuel cell unit and hydrogen fuel tank) and a second storage space for electrical equipment (secondary battery and power regulation means). This segmentation prevents electric sparks from contacting purged hydrogen gas, resolving the safety issue while maintaining manageable system complexity through organized spatial separation.
2Object-affected harmful factors
If the fuel cell unit is installed in an enclosed space with the battery and DC/DC converter, then protection from salt damage and rainfall is improved, but safety is compromised due to potential electric sparks contacting hydrogen gas
Solution Approach 1:
The patent creates two separate enclosed storage spaces, each providing weather protection for its respective equipment. The first storage space protects hydrogen-related equipment from salt damage and rainfall, while the second storage space protects electrical equipment similarly. This segmentation allows both equipment types to benefit from weather protection without the safety risk of mixing them in one enclosed space where electric sparks could contact hydrogen gas.
3Volume of stationary object
If all power supply equipment is housed in a single storage space, then space efficiency is reduced, but device complexity is lowered
Solution Approach 1:
The patent segments power supply equipment into two functional groups housed in separate storage spaces: hydrogen-related equipment in the first space and electrical equipment in the second space. This segmentation improves space efficiency by allowing optimized arrangement of each equipment type in its dedicated space, while the overall system complexity remains manageable through clear functional zonation and standardized interfaces between spaces.
Applied Scientific Principles
This section explains which scientific principles are used to turn an abstract innovation direction into a practical engineering solution.
Function Achieved in This Case
This configuration improves space efficiency, safety by preventing hydrogen exposure, and weather resistance, allowing for effective weight distribution and potential retrofitting into existing hulls, while minimizing the risk of flooding and salt damage.
Implementation Method 1
a fuel cell unit (2) adapted to supply electric power to the electric motor
Implementation Method 2
a secondary battery (4) serving as an auxiliary power supply for the fuel cell unit
Data Source
AI summary
A fuel cell watercraft includes: a hull; an electric motor Serving as a power source adapted to generate propulsion of the hull; a fuel cell unit adapted to supply electric power to the electric motor; a hydrogen fuel tank adapted to supply hydrogen fuel to the fuel cell unit; a secondary battery serving as an auxiliary power supply for the fuel cell unit; and power regulation means for regulating the electric power supplied to the electric motor, in which the hull includes first and second storage spaces isolated from each other, the first and second storage spaces include equipment hatches able to be opened and closed by lid members, the fuel cell unit and the hydrogen fuel tank are housed in the first storage space, and the secondary battery and the power regulation means are housed in the second storage space.