Fuel Cell Concentration Control via Temperature Feedback
Find Innovative SolutionsGenerate Solutions
Solution Overview
Problem
Conventional fuel supply methods for fuel cells face challenges in accurately controlling fuel concentration due to factors like temperature changes, impurities, and device aging, leading to inefficiencies and high costs in maintaining optimal operation.
Innovation Solution
A fuel supply control system that uses a first thermal meter to detect system temperature, a fuel tank with high concentration fuel, and a controller to adjust the fuel delivery velocity based on temperature differences, ensuring the fuel concentration in the fuel unit is maintained within an optimal range.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Measurement precision
If conventional fuel supply methods use concentration meters to detect fuel concentration, then fuel concentration can be measured, but measurement accuracy deteriorates due to temperature changes, impurities, and device aging
Solution Approach 1:
The patent introduces temperature as an intermediary parameter to indirectly control fuel concentration. Instead of directly measuring fuel concentration with unreliable meters, the system measures temperature (which is more stable and easier to measure accurately) and uses temperature-based control logic to adjust fuel supply, thereby achieving accurate fuel concentration control without relying on unreliable direct concentration measurements.
Solution Approach 2:
The patent replaces the mechanical/chemical concentration measurement system with a thermal measurement and control system. By substituting the concentration meter with temperature sensors and temperature-based control algorithms, the system achieves more reliable and accurate control of fuel concentration through thermal parameters rather than direct chemical concentration measurement.
2Adaptability or versatility
If high concentration fuel is stored in the fuel tank to adjust fuel concentration, then fuel concentration control flexibility is improved, but system complexity increases due to additional fuel tanks and delivery devices
Solution Approach 1:
The patent changes the control parameter from direct fuel concentration adjustment to temperature-based control. By using temperature as the control parameter and adjusting fuel supply velocity based on temperature differences, the system achieves fuel concentration control flexibility without requiring complex multi-tank systems. The single fuel tank with variable supply velocity simplifies the system while maintaining adaptability.
Solution Approach 2:
The patent makes the fuel supply device multi-functional by enabling it to perform both fuel delivery and temperature-based concentration control functions. The fuel supply device adjusts delivery velocity based on temperature readings, combining what would traditionally require separate systems (fuel storage, temperature monitoring, and concentration control) into a unified system, thereby reducing overall system complexity.
3Manufacturing precision
If fuel supply velocity is adjusted based on temperature difference, then fuel concentration control precision is improved, but energy consumption increases due to continuous temperature monitoring and active fuel delivery adjustment
Solution Approach 1:
The patent implements a feedback control system where temperature is continuously monitored and fuel supply velocity is adjusted based on the temperature difference from a reference value. This closed-loop feedback mechanism achieves precise fuel concentration control by automatically correcting deviations, and the system only consumes additional energy when temperature deviations occur, rather than requiring continuous high-energy operation.
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 allows for precise control of fuel concentration, optimizing fuel cell performance by maintaining the system temperature within a predetermined range, thereby enhancing operational efficiency and reducing costs associated with inaccurate measurement devices.
Implementation Method 1
a first thermal meter detecting a system temperature of the fuel cell
Implementation Method 2
a fuel deliver device delivering the fuel from the fuel tank to a fuel unit to adjust fuel concentration thereof
Data Source
AI summary
The invention provides a fuel supply control system for fuel cells, controlling fuel concentration in a fuel unit. The fuel supply control system comprises a first thermal meter detecting a system temperature of the fuel cell, a fuel supply device comprising a fuel tank storing highly concentrated fuel and a fuel deliver device delivering fuel from the fuel tank to the fuel unit to adjust fuel concentration thereof, and a controller calculating a difference between a predetermined and an environmental temperature, generating a first velocity by adjusting the predetermined fuel supply velocity according to the temperature difference, and setting the delivery velocity of the fuel delivering device according to the first velocity.