Fuel Cell Power System Dividing Wall Isolation
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Solution Overview
Problem
In fuel cell systems, the complexity of wires connecting devices in the non-gas chamber leads to a high risk of ignition due to potential sparks from high-voltage power supply circuits, especially when combustible gases leak from the gas passage chamber.
Innovation Solution
A power generating system is designed with a dividing wall to separate the combustible gas passage and control circuits, placing high-voltage power supply circuits in a non-gas chamber to prevent spark-induced ignitions, and using connecting units and control circuits in the gas chamber to manage power distribution efficiently, reducing wire complexity and ignition risk.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If the control device is arranged in the non-gas chamber to prevent ignition from sparks, then safety is improved, but wire complexity increases
Solution Approach 1:
The control device is divided into two functional parts: the power supply circuit (handling high voltage) is placed in the non-gas chamber for safety, while the control circuit (handling low voltage) is placed in the gas passage chamber for operational convenience. This segmentation resolves the contradiction by separating safety-critical functions from operation-critical functions into different spatial zones.
2Device complexity
If the control device is arranged in the gas passage chamber to reduce wire complexity, then wire complexity is reduced, but the risk of ignition from sparks increases
Solution Approach 1:
Different parts of the control device are assigned different voltage levels and placed in different chambers according to their functional requirements. The high-voltage power supply circuit is isolated in the non-gas chamber where ignition risk is unacceptable, while the low-voltage control circuit operates in the gas passage chamber where operational simplicity is prioritized. This local differentiation of quality (voltage level and location) resolves the contradiction.
3Object-affected harmful factors
If high-voltage power supply circuits are placed in the non-gas chamber to prevent sparks, then ignition risk is reduced, but wire length increases
Solution Approach 1:
The electrical connection is segmented into two parts: high-voltage power supply wires connect the power supply circuit in the non-gas chamber to the dividing wall, while low-voltage control wires connect the control circuit in the gas passage chamber to the dividing wall. This segmentation allows each wire type to be optimized for its specific function and location, reducing overall wire length while maintaining safety.
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 reduces wire complexity and effectively suppresses the risk of ignition from sparks, even if combustible gases leak, by separating high-voltage components from the gas chamber and using low-voltage components in the gas chamber.
Implementation Method 1
generate electricity and heat at the same time by causing a hydrogen-containing fuel gas obtained by reforming a material gas, such as a city gas, and an oxygen-containing oxidizing gas, such as air, to electrochemically react with each other
Implementation Method 2
a hydrogen-containing fuel gas obtained by reforming a material gas, such as a city gas
Data Source
AI summary
A power generating system of the present invention includes: a package (70); a power generator (1); a combustible gas passage (23); a first device configured to operate by a first voltage using a DC power generated by the power generator (1); a second power supply circuit (13) configured to generate the DC power of the first voltage; a first connecting unit (8) arranged between the first device and the second power supply circuit (13); a control circuit (7) configured to control the first device using the DC power of the first voltage; and a first power supply circuit (11) configured to generate a power of a second voltage higher than the first voltage, and the package (70) is divided by a dividing wall (71) into a first space (72) in which the power generator (1), the combustible gas passage (23), the first device, the first connecting unit (8), and the control circuit (7) are arranged and a second space (73) in which the first power supply circuit (11) and the second power supply circuit (13) are arranged.