Hydrogen Fueling Feedback for Real-Time Pressure Ramp Control
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Solution Overview
Problem
Existing hydrogen fueling protocols lack real-time communication and monitoring, leading to inaccurate and complex fueling control, which is crucial for safe and efficient hydrogen tank filling in vehicles.
Innovation Solution
A hydrogen fueling system that utilizes real-time communication from a CHSS to measure and monitor temperature and pressure, calculating an optimal pressure ramp rate for safe and quick hydrogen filling.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Adaptability or versatility
If conventional fueling protocols with lookup tables are used, then fueling control can be implemented, but the system becomes complex and cannot adapt to real-time conditions
Solution Approach 1:
The patent implements a feedback mechanism where the fueling system continuously receives real-time pressure and temperature data from the hydrogen tank during fueling, compares actual values with target values, and dynamically adjusts the pressure ramp rate accordingly. This closed-loop feedback system enables real-time adaptability without requiring complex lookup tables for every possible condition.
Solution Approach 2:
The system transitions from static lookup table-based control to dynamic real-time control. The pressure ramp rate is no longer fixed based on pre-defined conditions but is continuously adjusted during the fueling process based on actual tank pressure, temperature, and the calculated optimal ramp rate, making the system adaptive to changing conditions.
2Reliability
If real-time communication and monitoring are implemented, then fueling safety and efficiency improve, but communication reliability requirements increase
Solution Approach 1:
The patent incorporates error handling and communication verification mechanisms that prepare for potential communication failures before they occur. The system verifies data integrity, handles communication timeouts, and has fallback procedures to ensure safe fueling operation even if communication interruptions occur, thus cushioning against potential information loss.
3Productivity
If pressure ramp rate is increased for faster fueling, then fueling time decreases, but temperature and pressure thresholds may be exceeded
Solution Approach 1:
The system dynamically changes the pressure ramp rate parameter during fueling based on real-time conditions. Instead of using a fixed high ramp rate that could cause threshold violations, the system calculates an optimal ramp rate that adjusts to current tank pressure, temperature, and other conditions, enabling fast fueling while staying within safe thresholds.
Solution Approach 2:
The feedback mechanism continuously monitors temperature and pressure during fueling and adjusts the pressure ramp rate to prevent threshold violations. When approaching critical values, the system automatically reduces the ramp rate, creating a self-regulating process that maintains safety while maximizing fueling speed.
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
Enables safe and efficient hydrogen tank filling by minimizing time and ensuring pressure, temperature, and state of charge within preset thresholds, enhancing safety and efficiency.
Implementation Method 1
measuring the temperature and pressure of the hydrogen tanks in real-time
Implementation Method 2
measuring the temperature and pressure of the hydrogen tanks in real-time
Implementation Method 3
calculate the optimal pressure ramp rate, and allows hydrogen fueling to be performed at the optimal pressure ramp rate, thereby minimizing the fueling time within a range in which the hydrogen pressure, temperature, and state of charge (SOC) inside the hydrogen tank do not exceed preset thresholds
Implementation Method 4
has the nature of quick fueling at a high pressure and has a risk as compared with use of fossil fuels and its full fueling is not easy due to the Joule-Thomson effect
Data Source
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AI summary
According to an embodiment, a hydrogen fueling system based on real-time communication of a compressed hydrogen storage system (CHSS) for a fuel cell comprises a CHSS including a hydrogen tank and a hydrogen tank valve, a dispenser including a dispenser controller receiving sensing data including a pressure and temperature inside the hydrogen tank and a hydrogen supply unit supplying hydrogen to an inside of the hydrogen tank based on the sensing data, and a data hydrogen moving device including a CHSS controller converting the sensing data into data for wireless communication and outputting the data, a wireless communication unit provided for wireless communication between the CHSS controller and the dispenser controller of the dispenser, and a receptacle transferring hydrogen from the hydrogen supply unit to the hydrogen tank valve.