Hydrogen Filling Control for Inter-Vehicle Transfer

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Solution Overview

Problem

Existing hydrogen filling systems for fuel cell vehicles lack an efficient method to select the optimal combination of supplier and fillable hydrogen tanks for inter-vehicle hydrogen transfer, relying on differential pressure without considering real-time tank pressures and travel routes.

Innovation Solution

A hydrogen filling control method and system that acquires and compares internal pressure data from multiple vehicles to determine the most suitable hydrogen tank combination for inter-vehicle hydrogen filling, using a data processor and vehicle controllers to manage tank pair data and control the filling process based on requested modes (rapid or close packed) and real-time conditions.

Engineering Contradictions & Design Principles

VSEngineering Contradiction Analysis

1Productivity

If inter-vehicle hydrogen filling is performed using differential pressure without considering real-time tank pressures, then the filling process can be initiated, but the selection of optimal tank combination is inefficient and may not maximize hydrogen transfer amount or minimize filling time

Engineering Contradiction:
Improvehydrogen transfer efficiencyVSAvoidsystem complexity
Core Design Contradiction:
ProductivityVSDevice complexity

Solution Approach 1:

The system performs preliminary actions by acquiring internal pressure data from multiple hydrogen tanks in advance, calculating the differential pressure for each tank combination, and determining the optimal tank pair before the filling process begins. This preliminary calculation ensures that the selected combination maximizes hydrogen transfer efficiency while considering real-time pressure conditions.

Inventive Principle:
Principle #10Preliminary action

Solution Approach 2:

The system dynamically adjusts the tank combination selection based on real-time internal pressure data from the hydrogen tanks. By continuously monitoring pressure changes and recalculating optimal combinations, the system adapts to varying conditions to maintain maximum filling efficiency throughout the process.

Inventive Principle:
Principle #15Dynamics

2Productivity

If multiple hydrogen tanks are monitored and compared to determine optimal tank combination, then hydrogen transfer efficiency is maximized, but the data acquisition and processing complexity increases

Engineering Contradiction:
Improvefilling speedVSAvoiddata processing complexity
Core Design Contradiction:
ProductivityVSDifficulty of detecting and measuring

Solution Approach 1:

The hydrogen tanks themselves provide the necessary pressure data through their own sensors and communication systems. The system leverages the self-reported data from each tank to automatically determine the optimal combination without requiring external measurement devices or complex manual monitoring.

Inventive Principle:
Principle #25Self-service

Solution Approach 2:

The system replaces manual or mechanical methods of determining optimal tank combinations with automated electronic data processing. By using electronic sensors and computational algorithms to analyze pressure data and select the best tank pair, the system reduces the complexity of detection and measurement while improving filling speed.

Inventive Principle:
Principle #28Mechanics substitution (Replace mechanical system)

3Quantity of substance

If the system determines optimal tank combination based on real-time pressure data, then the amount of hydrogen filled is optimized, but the time required for data acquisition and analysis increases

Engineering Contradiction:
Improveamount of hydrogen filledVSAvoiddata processing time
Core Design Contradiction:
Quantity of substanceVSLoss of time

Solution Approach 1:

The system performs preliminary calculations of differential pressure and optimal tank combinations based on real-time pressure data before the filling process begins. By determining the best tank pair in advance, the system maximizes the amount of hydrogen that can be transferred while minimizing the time spent on data processing during the actual filling operation.

Inventive Principle:
Principle #10Preliminary action

Solution Approach 2:

The system rapidly acquires and processes pressure data from multiple tanks, quickly identifying the optimal combination and proceeding immediately to the filling process. This streamlined approach minimizes the time lost to data analysis while ensuring the selected tank combination maximizes hydrogen transfer quantity.

Inventive Principle:
Principle #21Skipping (Rushing through)

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 efficient selection of hydrogen tank combinations for optimal hydrogen transfer, prioritizing either the amount of hydrogen filled or the filling time, ensuring effective hydrogen management between fuel cell vehicles by leveraging real-time tank pressure data and travel route information.

Implementation Method 1

emergency hydrogen filling is performed from another fuel cell vehicle by using a differential pressure

Methodology Applied
Scientific EffectDifferential pressure: Pressure Gradient

Data Source

PatentUS20250102112A1Hydrogen filling control method, hydrogen filling system, and vehicle controller
Publication Date: 2025.03.27 SUBARU CORP
  • US20250102112A1 patent drawing
  • US20250102112A1 patent drawing
  • US20250102112A1 patent drawing

AI summary

A hydrogen filling control method includes: acquiring first and second hydrogen tank data; acquiring third hydrogen tank data; and determining a hydrogen tank combination based on the first, second, and third hydrogen tank data. The first hydrogen tank data includes internal pressure of a first hydrogen tank provided in a first vehicle. The second hydrogen tank data includes internal pressure of a second hydrogen tank provided in the first vehicle. The third hydrogen tank data includes internal pressure of a third hydrogen tank provided in a second vehicle. The hydrogen tank combination indicates which hydrogen tanks to be involved in hydrogen filling, out of the first and second hydrogen tanks provided in the first vehicle, and the third hydrogen tank provided in the second vehicle.