Fuel Cell Power Control Under Shared Heat Dissipation Limits
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Solution Overview
Problem
Conventional systems cause significant fluctuations in electrical power generation and accelerate fuel cell deterioration when a heat source, such as a retarder, operates in conjunction with fuel cells, leading to inadequate heat dissipation.
Innovation Solution
An electrical power system and control device that includes a fuel cell, heat source, and heat dissipator, controlled by a processor to manage heat generation and dissipation, ensuring the total heat generated does not exceed the dissipator's capacity by adjusting the operation of the fuel cells and other components.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Temperature
If the fuel cells are caused to stop operating when the heat source operates, then the heat dissipation problem is solved, but the electrical power generation fluctuates greatly and fuel cell deterioration accelerates
Solution Approach 1:
The patent merges the heat dissipation functions for both the fuel cell and heat source into a single integrated heat dissipator system. By combining the cooling circuits and heat exchange mechanisms, the system can simultaneously manage heat from both sources without requiring the fuel cell to shut down, thus maintaining operational stability while solving the heat dissipation problem.
Solution Approach 2:
The patent implements dynamic control of the heat dissipator's operating parameters (such as coolant flow rate, fan speed, or refrigeration cycle parameters) based on real-time heat generation levels from both the fuel cell and heat source. This dynamic adjustment allows the system to adapt to varying thermal loads and maintain effective heat dissipation throughout the heat source's operation without forcing the fuel cell to stop.
2Reliability
If the fuel cells operate continuously while the heat source operates, then the electrical power generation remains stable, but the heat dissipation capacity is exceeded
Solution Approach 1:
The patent employs preliminary action by predicting or estimating the heat generation levels of the heat source before it fully operates, and pre-adjusting the heat dissipator's capacity accordingly. This allows the system to prepare adequate heat dissipation capacity in advance, ensuring that when the fuel cell continues operating alongside the heat source, the combined heat load does not exceed the dissipator's capacity.
Solution Approach 2:
The patent changes the operational parameters of the heat dissipator (such as increasing coolant flow rate, adjusting refrigeration cycle parameters, or activating additional cooling stages) in response to the combined heat load from the fuel cell and heat source. These parameter adjustments enable the heat dissipator to handle the increased thermal load without requiring the fuel cell to reduce or stop operation.
3Adaptability or versatility
If the heat source and fuel cells both generate heat simultaneously, then the operational flexibility is improved, but the heat dissipation becomes inadequate
Solution Approach 1:
The patent designs the heat dissipator as a universal system capable of handling heat from multiple sources (fuel cell and heat source) simultaneously. The heat dissipation mechanism is configured to serve both functions through a unified thermal management architecture, allowing the system to maintain operational flexibility with both the fuel cell and heat source running concurrently without compromising heat dissipation adequacy.
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 approach effectively suppresses fuel cell deterioration and stabilizes power generation by optimizing heat management, reducing the need for complete shutdowns of fuel cells and enhancing the efficiency of heat dissipation.
Implementation Method 1
a fuel cell configured to generate electrical power through electrochemical reactions
Implementation Method 2
a heat dissipator configured to dissipate the first heat and the second heat
Data Source
AI summary
To provide an electrical power system and an electrical power control device that make it possible to suppress deterioration of a fuel cell compared to that conventional seen. An electrical power system according to an embodiment includes a fuel cell, a heat source, a heat dissipator, and a controller. The fuel cell is configured to generate electrical power through electrochemical reactions to generate first heat. The heat source operates to generate second heat. The heat dissipator is configured to dissipate the first heat and the second heat. The controller is configured to control the fuel cell to allow, when the heat source is in operation, an amount of the first heat to be equal to or below an available heat dissipation capacity acquired by subtracting an amount of the second heat from a maximum amount of heat to be dissipated from the heat dissipator.