Bidirectional Hydrogen Fueling Communication for Protocol Negotiation

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Solution Overview

Problem

Conventional hydrogen fueling systems for hydrogen fueled mobility lack efficient and reliable communication protocols, leading to inefficiencies, safety vulnerabilities, and incompatibilities in hydrogen fueling processes.

Innovation Solution

Implementing a bidirectional communication method for hydrogen fueling that negotiates communication and fueling protocols and parameters between a hydrogen fueled mobility and a dispenser, allowing for real-time data exchange and active safety management.

Engineering Contradictions & Design Principles

VSEngineering Contradiction Analysis

1Reliability

If unidirectional infrared communication devices are used for hydrogen fueling control, then wireless communication is achieved, but communication reliability and safety are limited

Engineering Contradiction:
Improvecommunication reliabilityVSAvoidcommunication system complexity
Core Design Contradiction:
ReliabilityVSDevice complexity

Solution Approach 1:

The patent implements bidirectional communication between the vehicle terminal and dispenser terminal, allowing real-time feedback exchange. The vehicle terminal can send fueling requests and receive confirmation, while the dispenser terminal can send status updates and control responses. This two-way feedback mechanism significantly improves communication reliability compared to unidirectional infrared communication.

Inventive Principle:
Principle #23Feedback

Solution Approach 2:

The patent replaces traditional mechanical/unidirectional communication systems with an electronic bidirectional communication system using wireless networks. This substitution enables more reliable data transmission, real-time monitoring, and active safety management, resolving the limitations of conventional unidirectional communication.

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

2Productivity

If conventional hydrogen fueling protocols are used, then fueling process is established, but efficiency and responsiveness are slow

Engineering Contradiction:
Improvefueling efficiencyVSAvoidfueling time
Core Design Contradiction:
ProductivityVSLoss of time

Solution Approach 1:

The patent implements preliminary actions by establishing bidirectional communication and negotiating protocols before the actual fueling process begins. The vehicle and dispenser terminals exchange information, confirm compatibility, and prepare control parameters in advance, enabling faster and more efficient fueling execution without delays during the process.

Inventive Principle:
Principle #10Preliminary action

Solution Approach 2:

The patent introduces dynamic protocol negotiation and real-time parameter adjustment capabilities. The communication system can adaptively select optimal protocols and adjust fueling parameters based on real-time conditions, significantly improving fueling efficiency and reducing time loss compared to static conventional protocols.

Inventive Principle:
Principle #15Dynamics

3Reliability

If bidirectional communication is implemented for real-time control, then safety and responsiveness improve, but system complexity increases

Engineering Contradiction:
ImprovesafetyVSAvoidcommunication system complexity
Core Design Contradiction:
ReliabilityVSDevice complexity

Solution Approach 1:

The patent implements a universal bidirectional communication framework that handles multiple functions including safety monitoring, protocol negotiation, parameter exchange, and control commands through a single integrated system. This multi-functional approach improves safety and responsiveness while minimizing the increase in system complexity by consolidating functions rather than adding separate systems.

Inventive Principle:
Principle #6Universality (Multi-functionality)

Data Source

PatentEP4663997A1Communication method and device for hydrogen fueling
Publication Date: 2025.12.17 HYUNDAI MOTOR CO LTD
  • EP4663997A1 patent drawingFigure 1
  • EP4663997A1 patent drawingFigure 2
  • EP4663997A1 patent drawingFigure 3

AI summary

A method according to an exemplary embodiment of the present disclosure comprises the steps of: negotiating a communication protocol with a dispenser for supplying, as fuel, hydrogen for mobility; negotiating, with the dispenser, a fuel supply protocol in order to receive, as fuel, the hydrogen from the dispenser; and negotiating, with the dispenser, fuel supply parameters based on the fuel supply protocol.