Hydrogen Station Bank Filling Sequence Optimization
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Solution Overview
Problem
Current hydrogen gas filling methods in hydrogen stations using the differential pressure filling method result in delayed hydrogen gas supply to subsequent fuel cell vehicles due to inefficient prioritization of accumulator banks, leading to longer filling times and reduced operational efficiency.
Innovation Solution
A hydrogen gas filling method that selects the bank to be filled first based on the shortest filling time, considering the pressure and capacity of each bank, to maintain high-pressure banks and ensure rapid recovery of hydrogen supply capacity, thereby reducing delays in supplying hydrogen to subsequent vehicles.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If the accumulator with the lowest residual pressure is filled first, then the hydrogen gas supply to FCV can be maintained, but the filling time increases and subsequent FCVs have to wait longer
Solution Approach 1:
The patent inverts the conventional filling strategy by selecting the accumulator with the highest residual pressure to fill first, rather than the lowest. This inversion allows the system to maintain high-pressure accumulators ready for immediate use, reducing the waiting time for subsequent FCVs while ensuring continuous supply through proper sequence management
2Loss of time
If the accumulator with the highest residual pressure is filled first, then the filling time is reduced, but the high-pressure accumulator capacity is wasted
Solution Approach 1:
The patent applies preliminary action by pre-calculating and pre-determining the optimal filling sequence based on accumulator pressures and capacities. The control device creates a filling plan in advance that balances quick filling with efficient capacity utilization, ensuring high-pressure accumulators are filled at the optimal moment rather than wasted or underutilized
3Device complexity
If a simple filling sequence is used, then the control system is simple, but the hydrogen supply efficiency for multiple FCVs is reduced
Solution Approach 1:
The patent implements feedback mechanisms where the control device continuously monitors accumulator pressures and FCV supply status. Based on this real-time feedback, the system dynamically adjusts the filling sequence and accumulator selection, optimizing supply efficiency for multiple FCVs while maintaining manageable control complexity through automated decision-making
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 faster filling of high-pressure banks, maintaining high-pressure levels and reducing waiting times for subsequent fuel cell vehicles, enhancing the operational efficiency of hydrogen stations by prioritizing banks that can be filled quickest.
Implementation Method 1
high-pressure hydrogen gas is stored in an accumulator in advance, and due to a pressure difference between the accumulator and the hydrogen tank of the FCV, the hydrogen gas is supplied
Implementation Method 2
due to a pressure difference between the accumulator and the hydrogen tank of the FCV, the hydrogen gas is supplied
Data Source
AI summary
Provided are a method for filling hydrogen gas into banks, configured so as to typically maintain high-pressure banks, thereby reducing time delays for supplying hydrogen gas to a second and subsequent FCV; and a hydrogen station. The hydrogen gas filling method and the hydrogen station are characterized by: filling hydrogen gas from a compressor into a bank (target bank) of which pressure is below the preset predetermined pressure; and if there are a plurality of other target banks, selecting as the filling bank a bank that may reach the filled state the fastest by being filled with hydrogen gas from the compressor.