WO-2026095610-A1 - COMMUNICATION METHOD AND COMMUNICATION APPARATUS FOR HYDROGEN FUELING

WO2026095610A1WO 2026095610 A1WO2026095610 A1WO 2026095610A1WO-2026095610-A1

Abstract

A communication method of a hydrogen fueled mobility, according to one embodiment of the present invention, comprises the steps of: establishing a secure communication channel between a mobility and a dispenser on the basis of handshaking for exchanging messages with the dispenser for supplying hydrogen as fuel to the mobility; generating a first message having a session header including a version of the session header based on metadata of a session in which hydrogen is fueled from the dispenser, a schema identifier of a payload, and length information of the payload; and transmitting the first message to the dispenser using the secure communication channel.

Inventors

SHIN, MIN HO

Assignees

현대자동차주식회사
기아 주식회사
명지대학교 산학협력단

Dates

Publication Date: 20260507
Application Date: 20251029
Priority Date: 20241031

Claims (20)

As a communication method for hydrogen fueled mobility, A step of establishing a secure communication channel between the mobility and the dispenser based on a handshake in which the mobility exchanges messages with the dispenser that supplies hydrogen fuel to the mobility; The above mobility generates a first message having a session header including a version of the session header based on metadata of a session receiving hydrogen fuel from the dispenser, a schema identifier of the payload, and length information of the payload; and The above mobility transmits the first message to the dispenser using the above secure communication channel; including, Communication method for hydrogen fuel mobility.
In paragraph 1, The packet containing the first message above includes the session header and the payload, and The above payload includes a message header and a schema-based encoded message, Communication method for hydrogen fuel mobility.
In paragraph 2, The above message header is, including a session identifier, a message identifier, a message timestamp, and optional signatures, Communication method for hydrogen fuel mobility.
In paragraph 1, A first session identifier that uniquely identifies the above session is assigned from the dispenser after the communication protocol negotiation procedure between the mobility and the dispenser, and the fuel supply protocol negotiation procedure, Communication method for hydrogen fuel mobility.
In paragraph 4, The above mobility acquires the first session identifier based on a message header included in a first fuel supply parameter response message received from the dispenser; including, Communication method for hydrogen fuel mobility.
In paragraph 4, In the first message prior to the first session identifier being assigned from the dispenser, the session identifier field is determined to a predetermined value, Communication method for hydrogen fuel mobility.
In paragraph 4, In the first message including the first fuel supply parameter request message prior to the first session identifier being received from the dispenser, the session identifier field is determined to a predetermined value. Communication method for hydrogen fuel mobility.
In paragraph 4, A plurality of second messages within the corresponding session after the first fuel supply parameter request message, after the first session identifier is assigned from the dispenser, include the first session identifier in the message header. Communication method for hydrogen fuel mobility.
As a communication device for hydrogen fuel supply deployed in hydrogen fuel mobility, It includes a processor that executes at least one of the above instructions, The above processor is, Establish a secure communication channel between the mobility and the dispenser based on a handshake that exchanges messages with the dispenser that supplies hydrogen fuel to the mobility; Generating a first message having the session header, which includes a version of the session header based on metadata of the session receiving hydrogen fuel from the dispenser, a schema identifier of the payload, and length information of the payload; The above mobility transmits the first message to the dispenser using the above secure communication channel; Communication device.
In Paragraph 9, The packet containing the first message above includes the session header and the payload, and The above payload includes a message header and a schema-based encoded message, Communication device.
In Paragraph 10, The above message header is, including a session identifier, a message identifier, a message timestamp, and optional signatures, Communication device.
In Paragraph 9, A first session identifier that uniquely identifies the above session is assigned from the dispenser after the communication protocol negotiation procedure between the mobility and the dispenser, and the fuel supply protocol negotiation procedure, Communication device.
In Paragraph 12, The above processor is, Obtaining the first session identifier based on a message header included in a first fuel supply parameter response message received from the dispenser, Communication device.
In Paragraph 12, In the first message prior to the first session identifier being assigned from the dispenser, the session identifier field is determined to a predetermined value, Communication device.
In Paragraph 12, A plurality of second messages within the corresponding session after the first fuel supply parameter request message, after the first session identifier is assigned from the dispenser, include the first session identifier in the message header. Communication device.
As a communication method for a dispenser that supplies hydrogen fuel to hydrogen fuel mobility, A step of establishing a secure communication channel between the mobility and the dispenser based on a handshake for exchanging messages with the mobility; The step of generating a third message having the session header, which includes a version of the session header based on metadata of the session in which the dispenser fuels hydrogen to the mobility, a schema identifier of the payload, and length information of the payload; and A step of transmitting the third message to the mobility using the above secure communication channel; including, Dispenser communication method.
In Paragraph 16, The packet containing the third message above includes the session header and the payload, and The above payload includes a message header and a schema-based encoded message, and The above message header is, including a session identifier, a message identifier, a message timestamp, and optional signatures, Dispenser communication method.
In Paragraph 16, A step of assigning a first session identifier that uniquely identifies the session to the session after a communication protocol negotiation procedure between the mobility and the dispenser, and a fuel supply protocol negotiation procedure; including, Dispenser communication method.
In Paragraph 18, A step of including the first session identifier in the message header of a first fuel supply parameter response message to be transmitted to the mobility and transmitting it; including, Dispenser communication method.
In Paragraph 18, In the third message prior to the first session identifier being assigned from the dispenser, the session identifier field is determined to a predetermined value, and A plurality of fourth messages within the corresponding session after the first fuel supply parameter request message, after the first session identifier is assigned from the dispenser, include the first session identifier in the message header. Dispenser communication method.

Description

Communication method and communication device for hydrogen fuel supply The present invention relates to a communication method and apparatus for hydrogen fueling from a charging station/dispenser to hydrogen fueled mobility, and more specifically, to a bidirectional communication method and apparatus using the same that can improve the safety, compatibility, security, efficiency, and reliability of hydrogen fueling. The content described in this section merely provides background information regarding the present embodiment and does not constitute prior art. Hydrogen cars, or hydrogen electric vehicles, refer to zero-emission automobiles that move using electrical energy generated when high-pressure hydrogen stored in the vehicle meets air. Hydrogen electric vehicles are also known as Fuel Cell Electric Vehicles (FCEVs). Most hydrogen electric vehicles operate by generating electricity using a fuel cell system that utilizes hydrogen as an energy source. Hydrogen electric vehicles are attracting attention as future eco-friendly mobility because they not only emit only pure water ( H₂O ) during the electricity generation process but also possess the capability to remove ultrafine dust from the atmosphere while in operation. Given that hydrogen is an infinite source on Earth and the energy production process is environmentally friendly, this technology is widely acclaimed for its potential to be utilized across various industries. Hydrogen-fueled mobility refers to a type of mobility that uses hydrogen as an energy source or hydrogen as fuel to generate electrical energy and uses this to drive an electric motor. In addition to the hydrogen electric vehicles described above, hydrogen-fueled mobility includes aerial mobility as well as industrial trucks, trains, ships, and aircraft, and may include devices that generate electrical energy using hydrogen as fuel and use this to drive. Most hydrogen fuel cell vehicles deliver high-pressure hydrogen, safely stored in a hydrogen fuel storage tank, and oxygen supplied through an air supply system to a fuel cell stack, generating electrical energy through an electrochemical reaction between the hydrogen and oxygen. This generated electrical energy is converted into kinetic energy via a drive motor to power the vehicle, and the vehicle has the advantage of emitting only pure water through its exhaust port while in motion. Meanwhile, the concept of a hydrogen fueled car, as opposed to a hydrogen electric vehicle, also refers to a vehicle that uses hydrogen as fuel; a hydrogen fueled car operates by driving an electric motor using heat generated from the direct combustion of hydrogen in an internal combustion engine (ICE). The method of supplying hydrogen for hydrogen fueled cars is not significantly different from that used for hydrogen electric vehicles. In a control technique for supplying hydrogen to a vehicle utilizing hydrogen as fuel, the ultimate goal is to control the temperature and pressure of the Compressed Hydrogen Storage System (CHSS) on the fuel cell side to operate under limit temperature and limit pressure conditions for the safety of hydrogen fuel supply. The hydrogen fuel supply processes, control techniques, and protocols for conventional hydrogen electric vehicles were defined when wired and wireless communication technologies and computing techniques for control were not yet mature, and thus fail to adequately reflect the achievements of recently attained Information and Communication Technology (ICT). Consequently, conventional hydrogen fuel supply technology for hydrogen electric vehicles is inefficient, slow, and unsuitable for large-scale hydrogen fuel supply. In addition, regarding hydrogen fuel supply communication, conventional technology has the problem of weak security due to the application of low-level communication technology. FIG. 1 is a conceptual diagram illustrating the operation of systems/devices within a hydrogen fuel supply environment in which a hydrogen fuel supply process to which bidirectional communication technology is applied is performed, according to one embodiment of the present invention. FIG. 2 is a conceptual diagram illustrating a system/device participating in a hydrogen fuel supply communication method according to an embodiment of the present invention and sub-components within the system/device. FIG. 3 is a conceptual diagram illustrating functional blocks corresponding to procedures in a hydrogen fuel supply communication method according to one embodiment of the present invention. FIG. 4 is an operation flowchart conceptually illustrating the operation between functional blocks corresponding to procedures in a hydrogen fuel supply communication method according to one embodiment of the present invention. FIG. 5 is a diagram conceptually illustrating functional blocks corresponding to procedures in a hydrogen fuel supply communication method according to one embodiment of the present invention on an OSI 7 layer