Fuel Cell System Layout with Partition Wall and Ventilation
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Solution Overview
Problem
Conventional fuel cell power generation systems face challenges in cost reduction, downsizing, and space efficiency due to separate arrangements of the fuel cell stack and power conversion circuit, leading to significant power loss and requiring extensive installation space.
Innovation Solution
Integrating the fuel cell and hot water storage tank within a single main body package, with a partition wall separating the stack and reformer area from the power conversion circuit, and utilizing a ventilation system to safely exhaust any leaked flammable gases, while optimizing the stack and power conversion circuit layout for minimal power loss.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Loss of energy
If the fuel cell stack and power conversion circuit are arranged separately, then the control and power conversion can be independently performed, but the power loss in power lines becomes large
Solution Approach 1:
The patent merges the power conversion circuit with the fuel cell stack by positioning it on the same side within the housing, rather than separating them into different chambers. This integration reduces the length of power lines connecting the stack to the power conversion circuit, thereby minimizing power loss while maintaining functional independence through internal layout optimization
2Area of stationary object
If the main body package and hot water storage package are separately formed, then the fuel cell system can be independently maintained, but the installation space required becomes considerable
Solution Approach 1:
The patent combines the hot water storage tank with the main body package into a single integrated unit, eliminating the need for separate packages and reducing installation space. The hot water storage tank is positioned within the same housing as the fuel cell stack, with water supply and discharge ports provided on the housing itself, simplifying both installation and maintenance while reducing overall footprint
3Ease of manufacture
If the fuel cell stack is downsized by reducing the number of stacked sheets, then the cost is reduced, but the stack voltage drops requiring increased electric current
Solution Approach 1:
The patent addresses the increased power loss from higher current requirements by merging the power conversion circuit directly with the fuel cell stack, minimizing the distance and resistance of power lines. This integration compensates for the increased I²R losses that occur when downsizing the stack, allowing cost reduction through fewer stacked sheets while maintaining acceptable efficiency
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 provides a space-saving, cost-effective fuel cell system with reduced power loss and enhanced safety by eliminating explosion risks, while allowing for efficient power generation and heat utilization.
Implementation Method 1
a ventilation fan 220 which forces air flow through the housing 2
Implementation Method 2
the ambient air sucked from the air intake port provided in the lower portion of the main body package below the reformer and the stack pushes out the inflammable gas which has leaked into the main body package
Data Source
Figure 1
Figure 2~3
Figure 4
AI summary
A fuel cell power generation system, comprising: a main body package; a hot water storage tank disposed in the main body package; a stack disposed in the main body package; a reformer disposed in the main body package; an electric circuit disposed in the main body package and comprising: a high-voltage circuit including a power conversion circuit; and a low-voltage circuit; a ventilation fan disposed in the main body package and configured to discharge air in the main body package to an exterior of the main body package; an air intake port provided in the main body package in windward of the stack and the reformer; and a partition wall partitioning an interior of the main body package into a space in which the stack and the reformer are disposed and a space in which the high-voltage circuit is disposed, wherein: the ventilation fan is disposed in an upper part of the space in which the stack and the reformer are disposed; the stack, the reformer and the high-voltage circuit are vertically arranged; and the high-voltage circuit is arranged above the stack and the reformer.