Communication device and method with interoperability for hydrogen vehicle fueling

Abstract

A hydrogen fueled communication method performed by a distributor includes the steps of: identifying a communication protocol supported by a moving body fueled by hydrogen and a communication protocol supported by the distributor based on a communication sequence performed by the moving body fueled by hydrogen and information transferred by the communication sequence; and determining a communication protocol to be executed between the hydrogen-fueled moving body and the distributor based on the communication protocol supported by the hydrogen-fueled moving body and the communication protocol supported by the distributor.

Description

Technical Field

[0001] The present disclosure relates to a communication technology for hydrogen fuel supply / supply of a mobile body using hydrogen as fuel, and more particularly to a hydrogen fuel supply process that enhances safety and compatibility, a communication protocol used for the process, and a method for determining a hydrogen fuel supply protocol. Background Art

[0002] The description in this section merely provides background information for embodiments of the present disclosure and is not intended to indicate prior art to the present disclosure.

[0003] A hydrogen vehicle, a hydrogen electric vehicle, or a fuel cell electric vehicle (FCEV) refers to a vehicle that is driven by electric energy generated by a reaction of high-pressure hydrogen stored in the vehicle with oxygen in the air and generates little pollution.

[0004] The concept of a mobile body using hydrogen as fuel includes not only hydrogen electric vehicles and fuel cell electric vehicles using a fuel cell system that utilizes hydrogen as an energy source, but also other types of mobile bodies that use an internal combustion engine (ICE) to generate power and are driven by the power generated by the ICE using hydrogen as fuel.

[0005] As is known in the art, hydrogen electric vehicles not only exhaust pure water (H2O) vapor in the process of power generation, but also remove ultrafine dust in the air while traveling, and thus attract attention as a future environmentally friendly mobile body. Since the fuel (i.e., hydrogen) is abundant on the earth and the energy production process is environmentally friendly, hydrogen electric vehicles are attracting attention as a technology potentially used in industry.

[0006] Hydrogen electric vehicles generate electricity by supplying high-pressure hydrogen safely stored in a hydrogen fuel storage tank and oxygen introduced through an air supply system to a fuel cell stack and causing an electrochemical reaction between hydrogen and oxygen. The electricity generated in the fuel cell stack is converted into kinetic energy by an electric motor to drive the hydrogen electric vehicle, and the running hydrogen electric vehicle exhausts only pure water vapor through the exhaust port.

[0007] Similar to the engine in an internal combustion vehicle, a fuel cell system provides power to the vehicle. A fuel cell, also referred to as a "three-stage cell," is a unit that generates the electrical energy needed to drive a hydrogen electric vehicle. A fuel cell converts chemical energy into electrical energy through an electrochemical reaction between hydrogen and oxygen. The electrical energy generated by these reactions is a pure chemical reaction and does not produce any exhaust gas such as carbon dioxide like fossil fuels. Fuel cells are generally classified by the type of fuel or electrolyte. Leading fuel cell technologies may include proton exchange membrane fuel cells (PEMFC), solid oxide fuel cells (SOFC), and molten carbonate fuel cells (MCFC). The components that generate electricity using fuel cells in hydrogen electric vehicles include fuel cell stacks, hydrogen supply systems and air supply systems, and thermal management systems.

[0008] The efficient generation of electrical energy in a fuel cell stack requires the assistance of an operating mechanism. Among several devices in the operating mechanism, the hydrogen supply system plays a role in changing the pressure condition of hydrogen safely stored in a hydrogen fuel storage tank from high pressure to low pressure and delivering it to the fuel cell stack. In addition, the hydrogen supply system increases the efficiency of hydrogen supply by recirculating through a recirculation pipeline.

[0009] The thermal management system may release heat generated when the fuel cell stack undergoes an electrochemical reaction to the outside and circulate cooling water to maintain the temperature of the fuel cell stack within a specific range. The thermal management system may affect the output and life of the fuel cell stack.

[0010] Hydrogen fuel vehicles other than hydrogen electric vehicles are also vehicles that use hydrogen as fuel. Hydrogen fuel vehicles are driven by an electric motor that rotates by the heat generated by the direct combustion of hydrogen in the engine. The method for fueling / supplying hydrogen to hydrogen fuel vehicles is not much different from the hydrogen fuel supply / supply method for hydrogen electric vehicles.

[0011] The control scheme for fueling / supplying hydrogen to a mobile body fueled by hydrogen is intended to control the hydrogen fuel feeding / supply so that the temperature (T) and pressure (P) of the compressed hydrogen storage system (CHSS) on the fuel cell side are maintained below certain temperature limits and pressure limits to ensure safety.

[0012] The hydrogen fuel supply / supply process, control scheme and its protocol in conventional hydrogen-fueled mobile bodies have been specified before wired / wireless communication or computing technology for control became mature, and therefore they do not make full use of the latest information and communication technology (ICT).

[0013] Therefore, conventional hydrogen fuel supply / supply subsystems for hydrogen-fueled mobile bodies are inefficient, slow, and unsuitable for large-scale hydrogen fuel supply. Summary of the invention

[0014] Technical issues

[0015] To solve the above problems, an object of the present disclosure is to effectively enhance security and improve the handling of emergencies and errors.

[0016] Another object of the present disclosure is to ensure compatibility of communication protocols and two-way communication capabilities, and to enhance the safety and efficiency of the hydrogen fuel supply / delivery process.

[0017] Another object of the present disclosure is to provide a safe and efficient hydrogen fuel supply / delivery process and a communication protocol supporting the process, which can achieve fuel supply status monitoring, safety measurement / control through collaboration, communication security, and user experience.

[0018] Another object of the present disclosure is to provide a framework for providing communication interoperability between a mobile body using hydrogen as fuel and a distributor, and for dividing the problem existing in the entire hydrogen supply process of the mobile body using hydrogen as fuel into multiple sub-problems so as to solve the problem by dividing and conquering the problem.

[0019] Technical Solution

[0020] According to one aspect of an exemplary embodiment, a hydrogen fuel supply communication method performed by a distributor, the distributor supplies hydrogen fluid fuel to a mobile body that uses hydrogen as fuel, the method may include: based on a communication sequence performed by the mobile body that uses hydrogen as fuel and information transmitted by the communication sequence, identifying a communication protocol supported by the mobile body that uses hydrogen as fuel and a communication protocol supported by the distributor; and based on the communication protocol supported by the mobile body that uses hydrogen as fuel and the communication protocol supported by the distributor, determining a communication protocol to be performed between the mobile body that uses hydrogen as fuel and the distributor.

[0021] The information conveyed by the communication sequence may include a usage classification of delivered data (UCDC) that can be supported by the hydrogen-fueled mobile object.

[0022] The communication protocol may include at least one detailed subordinate communication protocol. The at least one detailed subordinate communication protocol may correspond to one of the following items: two-way communication, one-way communication, and no communication.

[0023] The information transmitted by the communication sequence may include at least one of the following items: at least one communication protocol that the hydrogen-fueled mobile body can support and / or at least one hydrogen fuel supply protocol that the hydrogen-fueled mobile body can support for supplying hydrogen fluid fuel to the hydrogen-fueled mobile body.

[0024] The operation of determining a communication protocol may include: determining a communication protocol candidate based on a communication protocol supported by a mobile body that uses hydrogen as fuel and a communication protocol supported by a distributor; and determining a communication protocol from the communication protocol candidates based on whether the communication protocol candidate corresponds to a hydrogen fuel supply protocol for supplying hydrogen fluid fuel to a mobile body that uses hydrogen as fuel.

[0025] The communication protocol may be determined based on at least one of: interoperability and / or backward compatibility between the dispenser and the hydrogen-fueled mobile object.

[0026] The hydrogen fuel supply communication method may further include: determining whether the socket of the mobile body running on hydrogen fuel is coupled to the nozzle of the dispenser; and receiving information transmitted by the communication sequence from the mobile body running on hydrogen fuel in a state where the socket and the nozzle are coupled.

[0027] The hydrogen fuel supply communication method may further include performing pairing by identifying whether the hydrogen-fueled mobile body indicated by the information transferred by the communication sequence and the hydrogen-fueled mobile body coupled to the dispenser are the same entity.

[0028] The hydrogen supply communication method may also include: determining whether the socket of the mobile body using hydrogen as fuel is coupled to the nozzle of the dispenser; in the state where the socket and the nozzle are coupled, preparing to receive a communication sequence from the mobile body using hydrogen as fuel within a predetermined time interval; and based on whether the communication sequence from the mobile body using hydrogen as fuel is received within the predetermined time interval, identifying the communication protocol that the mobile body using hydrogen as fuel can support.

[0029] The operation of determining the communication protocol may include: starting communication protocol negotiation based on determining that bidirectional communication is supported between the mobile object using hydrogen as fuel and the dispenser according to information transmitted by the communication sequence; and determining the communication protocol through the communication protocol negotiation.

[0030] According to another aspect of the exemplary embodiment, a hydrogen fuel supply communication device installed on a dispenser that supplies hydrogen fluid fuel to a mobile body that uses hydrogen as fuel may include: a memory that stores at least one program instruction; and a processor that is configured to execute at least one program instruction stored in the memory. By executing at least one program instruction stored in the memory, the processor may be configured to: identify the communication protocol supported by the mobile body that uses hydrogen as fuel and the communication protocol supported by the dispenser based on the communication sequence performed by the mobile body that uses hydrogen as fuel and the information transmitted by the communication sequence; and determine the communication protocol to be performed between the mobile body that uses hydrogen as fuel and the dispenser based on the communication protocol supported by the mobile body that uses hydrogen as fuel and the communication protocol supported by the dispenser.

[0031] In order to determine the communication protocol, the processor can be further configured to: determine a communication protocol candidate based on the communication protocols supported by the mobile body using hydrogen as fuel and the communication protocols supported by the distributor; and determine the communication protocol from the communication protocol candidates based on whether the communication protocol candidate corresponds to a hydrogen fuel supply protocol for supplying hydrogen fluid fuel to the mobile body using hydrogen as fuel.

[0032] The processor may be further configured to determine the communication protocol based on at least one of: interoperability and / or backward compatibility between the dispenser and the hydrogen-fueled vehicle.

[0033] By executing at least one program instruction stored in the memory, the processor can be further configured to: determine whether the socket of the mobile body using hydrogen as fuel is coupled to the nozzle of the dispenser; and when the socket and the nozzle are coupled, receive information transmitted by the communication sequence from the mobile body using hydrogen as fuel.

[0034] By executing at least one program instruction stored in the memory, the processor may be further configured to perform pairing by identifying whether the hydrogen-fueled mobile object indicated by the information transmitted by the communication sequence and the hydrogen-fueled mobile object coupled to the dispenser are the same entity.

[0035] By executing at least one program instruction stored in the memory, the processor can be further configured to: determine whether the socket of the mobile body running on hydrogen fuel is coupled to the nozzle of the dispenser; when the socket is coupled to the nozzle, prepare to receive a communication sequence from the mobile body running on hydrogen fuel within a predetermined time interval; and based on whether the communication sequence from the mobile body running on hydrogen fuel is received within the predetermined time interval, identify the communication protocol that the mobile body running on hydrogen fuel can support.

[0036] In order to determine the communication protocol, the processor can be further configured to: initiate communication protocol negotiation based on determining that two-way communication is supported between the mobile object using hydrogen as fuel and the dispenser according to information transmitted by the communication sequence by executing at least one program instruction stored in the memory; and determine the communication protocol through communication protocol negotiation.

[0037] Beneficial Effects

[0038] According to the exemplary embodiments of the present disclosure, it is possible to effectively enhance security and improve the handling of emergencies and errors.

[0039] According to the exemplary embodiments of the present disclosure, it is possible to ensure compatibility of communication protocols and bidirectional communication capabilities, and enhance safety and efficiency of a hydrogen fuel supply / delivery process.

[0040] According to an exemplary embodiment of the present disclosure, a safe and efficient hydrogen fuel supply / delivery process and a communication protocol supporting the process can be provided, which can implement fuel supply status monitoring, safety measurement / control through collaboration, communication security, and user experience.

[0041] According to an exemplary embodiment of the present disclosure, a framework can be provided for providing communication interoperability between a mobile body using hydrogen as fuel and a distributor, and for dividing a problem existing in the entire hydrogen fuel supply process for a mobile body using hydrogen as fuel into multiple sub-problems so as to solve the problem by dividing and overcoming the problem. BRIEF DESCRIPTION OF THE DRAWINGS

[0042] Figure 1 is a conceptual diagram illustrating a hydrogen electric vehicle and a dispenser 100 in which a hydrogen fuel supply communication method according to an exemplary embodiment of the present disclosure may be performed;

[0043] Figure 2 is a flow chart illustrating a hydrogen fuel supply communication method according to an exemplary embodiment of the present disclosure;

[0044] Figure 3 and Figure 4 is a conceptual diagram showing a slave operation performed when a hydrogen fuel supply communication method according to an exemplary embodiment of the present disclosure is executed;

[0045] Figure 5 is a conceptual diagram describing an example of an interoperability determination standard forming the basis of a hydrogen fuel supply communication method according to an exemplary embodiment of the present disclosure;

[0046] Figure 6 is a conceptual diagram describing an example of an interoperability determination standard forming the basis of a hydrogen fuel supply communication method according to an exemplary embodiment of the present disclosure;

[0047] Figure 7 is a conceptual diagram describing an example of an interoperability determination standard forming the basis of a hydrogen fuel supply communication method according to an exemplary embodiment of the present disclosure;

[0048] Figure 8 and Fig. 9 is a sequence diagram showing a communication protocol negotiation process performed when executing the hydrogen fuel supply communication method according to the exemplary embodiment of the present disclosure;

[0049] Fig.10 is a sequence diagram showing an authorization process performed when executing the hydrogen fuel supply communication method according to the exemplary embodiment of the present disclosure;

[0050] Fig.11is a sequence diagram showing a safety check-in process performed when executing the hydrogen fuel supply communication method according to the exemplary embodiment of the present disclosure;

[0051] Fig.12 is a sequence diagram showing a fuel supply control and monitoring process performed when executing a hydrogen fuel supply communication method according to an exemplary embodiment of the present disclosure;

[0052] Fig.13 is a sequence diagram showing a safety check-out process performed when executing the hydrogen fuel supply communication method according to the exemplary embodiment of the present disclosure;

[0053] Fig.14 is a sequence diagram showing a termination process performed when the hydrogen fuel supply communication method according to the exemplary embodiment of the present disclosure is executed;

[0054] Fig.15 is a sequence diagram showing an emergency processing procedure performed when the hydrogen fuel supply communication method according to the exemplary embodiment of the present disclosure is executed; and

[0055] Fig.16 is a block diagram showing a general configuration of a computing system that may be installed on a dispenser and / or a hydrogen electric vehicle as a hydrogen fuel supply communication device according to an exemplary embodiment of the present disclosure. DETAILED DESCRIPTION

[0056] In addition to the above-mentioned objects, other objects and features of the present disclosure will become more apparent through the description of exemplary embodiments with reference to the accompanying drawings.

[0057] In order to more clearly understand the features and advantages of the present disclosure, exemplary embodiments of the present disclosure will be described in detail with reference to the accompanying drawings. However, it should be understood that the present disclosure is not limited to the specific embodiments disclosed herein, but includes all modifications, equivalents and replacements falling within the spirit and scope of the present disclosure.

[0058] Terms including ordinal numbers (such as "first" and "second") designated in this specification to describe various components are used to distinguish one component from other components, but are not intended to be limited to specific components. For example, a second component may be referred to as a first component, and similarly, a first component may be referred to as a second component without departing from the scope of the present disclosure. As used herein, the term "and / or" may include the presence of one or more associated listed items and any and all combinations of the listed items.

[0059] In the description of the exemplary embodiments of the present disclosure, “at least one of A and B” may mean “at least one of A or B” or “at least one of a combination of one or more of A and B”. Furthermore, in the description of the exemplary embodiments of the present disclosure, “one or more of A and B” may mean “one or more of A or B” or “a combination of one or more of A and B”.

[0060] When a component is referred to as being "connected" or "coupled" to another component, the component may be directly logically or physically connected or coupled to the other component or indirectly connected or coupled through an intervening object. In contrast, when a component is referred to as being "directly connected" or "directly coupled" to another component, it should be understood that there are no intervening objects between the components. Other words used to describe relationships between elements should be interpreted in a similar manner.

[0061] These terms are used herein only for the purpose of describing specific exemplary embodiments and are not intended to limit the present disclosure. Unless the context clearly dictates otherwise, singular forms also include plural referents. Moreover, the expressions "comprises," "comprising," "constructed," and "configured" are used to refer to the presence of the described features, quantities, processing steps, operations, elements, or combinations of parts, but are not intended to exclude the presence or addition of additional features, quantities, processing steps, operations, elements, or parts.

[0062] Unless otherwise defined, all terms (including technical or scientific terms) used herein have the same meaning as commonly understood by those of ordinary skill in the art to which the present disclosure belongs. Terms such as those defined in commonly used dictionaries should be interpreted as having a meaning consistent with their meaning in the context of the relevant documents, and should not be interpreted as having an ideal or overly formal meaning unless explicitly defined in this application.

[0063] Meanwhile, if necessary, one or more conventional components may be included in the configuration of the present disclosure, and such components will be described herein to the extent that the technical concept and concept of the present disclosure are not obscured. However, if the description of conventional components may obscure the technical concept and concept of the present disclosure, the detailed description of these components may be omitted for simplicity.

[0064] For example, the communication between the dispenser and the vehicle can be implemented using conventional technologies, such as IrDA technology for one-way communication, short-range wireless communication technology (such as Bluetooth, WLAN, and UWB) for two-way communication, and wired communication technology for one-way or two-way communication. At least some of the conventional technologies can be used as basic technologies for implementing the present disclosure.

[0065] However, the present disclosure is not intended to claim rights to these known technologies, and some conventional technologies may be included in the description of the exemplary embodiments to enable those skilled in the art to implement the exemplary embodiments without departing from the scope of the technical concept of the exemplary embodiments.

[0066] The terms used in this disclosure are defined as follows.

[0067] "Interoperability": The state in which components of a system interact with corresponding components of the system to perform operations intended by the system. Additionally, information interoperability may refer to the ability of two or more networks, systems, devices, applications, or components to effectively share and easily use information without causing inconvenience to users.

[0068] The correlation or associating process may include the process of establishing a relationship between two peer communicating entities.

[0069] “Command and control communications”: communications used to exchange information necessary to start, control, and terminate the hydrogen fuel supply process between a hydrogen dispenser and a mobile object using hydrogen as fuel.

[0070] Mobile bodies using hydrogen as fuel generally include not only hydrogen electric vehicles or hydrogen fuel cell electric vehicles (FCEVs) using a fuel cell, but also internal combustion engine (ICE)-based vehicles using hydrogen as fuel.

[0071] Even though the embodiments described in the following description focus on hydrogen electric vehicles or hydrogen fuel cell electric vehicles, it is obvious to those skilled in the art that, according to another embodiment of the present disclosure, the present disclosure can be applied to ICE-based hydrogen-fueled mobile bodies that use hydrogen as fuel. In particular, although the hydrogen fuel supply protocol and / or the communication protocol for hydrogen fuel supply are disclosed with focus on hydrogen fuel cell electric vehicles in the following description, the hydrogen fuel supply protocol and / or the communication protocol for hydrogen fuel supply can also be applied to ICE-based hydrogen electric vehicles.

[0072] The hydrogen fluid fuel may include gaseous hydrogen fuel or liquid hydrogen fuel.

[0073] Now, exemplary embodiments of the present disclosure will be described in detail with reference to the accompanying drawings. In the accompanying drawings, the same components may be represented by the same reference numerals to facilitate overall understanding of the present disclosure, and for the sake of simplicity, repeated description thereof will be omitted.

[0074] In the following, reference is made to Figures 1 to 16 Exemplary embodiments of the present disclosure are described in detail.

[0075] Figure 1is a conceptual diagram illustrating a hydrogen electric vehicle or FCEV 200 and a dispenser 100 , in which a hydrogen fuel supply communication method according to an exemplary embodiment of the present disclosure may be performed.

[0076] The hydrogen fuel supply process between the hydrogen electric vehicle 200 and the dispenser 100 may be understood as a process in which the dispenser 100 controls the pressure and temperature of the gaseous hydrogen fuel or the liquid hydrogen fuel to supply the gaseous hydrogen fuel or the liquid hydrogen fuel to the hydrogen electric vehicle 200 .

[0077] The SAE J2601 industry standard published in May 2020 specifies a fuel supply scheme for light-duty gaseous hydrogen surface vehicles. In particular, the SAE J2601 standard specifies one-way communication from a hydrogen electric vehicle 200 to a dispenser 100 for light-duty and medium-duty vehicles.

[0078] The part of the hydrogen electric vehicle 200 that engages with the nozzle of the dispenser 100 is called a receptacle. The SAE J2601 standard discloses that the hydrogen electric vehicle 200 can notify the dispenser 100 that the nozzle is engaged with the receptacle by using a one-way communication device such as IrDA.

[0079] There may be a case where the hydrogen electric vehicle 200 does not even have a one-way communication device. In such a case, the dispenser 100 may need to control the hydrogen fuel supply process for the hydrogen electric vehicle 200 without any communication process.

[0080] With the advancement of communication technology, the possibility of two-way communication between the hydrogen electric vehicle 200 and the dispenser 100 has been proposed, which can be achieved using traditional wired or wireless communication equipment. At this time, the hydrogen electric vehicle 200 and the dispenser 100 need to reach an agreement on the data level exchanged between the hydrogen electric vehicle 200 and the dispenser 100.

[0081] The two-way communication facilitates accurate measurement of the amount of fuel supplied when supplying hydrogen fuel, and can ensure the safety and reliability of the fuel supply process, and effectively perform safety control and management, including suspension and resumption of the fuel supply process due to unexpected changes.

[0082] However, there may be a situation where the hydrogen electric vehicle 200 and the dispenser 100 are required to perform the fuel supply process without sharing information in advance. Therefore, before performing the fuel supply process, it is important to check the compatible type of the communication protocol between the hydrogen electric vehicle 200 and the dispenser 100 and the hydrogen fuel supply protocol to ensure compatibility and interoperability.

[0083] According to an exemplary embodiment of the present disclosure, a use case framework for fuel supply communication for a hydrogen electric vehicle 200 is provided.

[0084] The framework according to the exemplary embodiment of the present disclosure allows ensuring interoperability and compatibility in almost all operations of the hydrogen electric vehicle 200 fuel supply process.

[0085] The hydrogen supply communication method according to the exemplary embodiment of the present disclosure enables dividing a problem existing in the entire process into a plurality of sub-problems to solve the problem by dividing and conquering the problem.

[0086] The hydrogen fuel supply communication method according to the exemplary embodiment of the present disclosure may identify individual use cases for solving each sub-problem.

[0087] Figure 2 is a flowchart illustrating a hydrogen fuel supply communication method according to an exemplary embodiment of the present disclosure.

[0088] Reference Figure 2 According to an exemplary embodiment of the present disclosure, a hydrogen fuel supply communication method is performed by supplying hydrogen fluid fuel to a hydrogen electric vehicle or a fuel cell electric vehicle (FCEV) 200 through a dispenser 100. The method may include an operation of identifying a communication protocol supported by the hydrogen electric vehicle 200 and a communication protocol supported by the dispenser 100 based on a communication sequence performed by the hydrogen electric vehicle 200 and information transmitted by the communication sequence (S320), and an operation of determining a communication protocol to be performed between the hydrogen electric vehicle 200 and the dispenser 100 based on the communication protocol supported by the hydrogen electric vehicle 200 and the communication protocol supported by the dispenser 100 (S330).

[0089] The information conveyed by the communication sequence may include a usage classification of communication data (UCDC) that the hydrogen electric vehicle 200 may support.

[0090] The communication protocol may include at least one detailed subordinate communication protocol. The at least one detailed subordinate communication protocol may correspond to one of the following items: two-way communication, one-way communication, and no communication.

[0091] The information transmitted by the communication sequence may include at least one of the following items: at least one communication protocol that the hydrogen electric vehicle 200 can support and / or at least one hydrogen fuel supply protocol for supplying hydrogen fluid fuel to the hydrogen electric vehicle 200, wherein the hydrogen electric vehicle 200 can support at least one hydrogen fuel supply protocol.

[0092] The operation S330 of determining the communication protocol may include an operation of determining communication protocol candidates based on the communication protocols supported by the hydrogen electric vehicle 200 and the communication protocols supported by the distributor 100, and an operation of determining the communication protocol from the communication protocol candidates based on a determination of whether the communication protocol candidates correspond to a hydrogen fuel supply protocol for supplying hydrogen fluid fuel to the hydrogen electric vehicle 200.

[0093] Some fuel supply protocols may be performed based on no communication. One-way IrDA may be required to perform some other fuel supply protocols. Two-way communication may be required to perform some other fuel supply protocols. To perform some other fuel supply protocols, both two-way communication and one-way IrDA may be required.

[0094] Some fuel supply protocols to be executed may require a certain UCDC level or a higher UCDC level. At least one fuel supply protocol may be prepared (or proposed) based on the type of hydrogen electric vehicle 200 and the type of distributor 100. The prepared (or proposed) fuel supply protocol may be assigned a priority. If multiple fuel supply protocols are prepared or proposed, the fuel supply protocols may be assigned different priorities. The communication protocol and the fuel supply protocol between the hydrogen electric vehicle 200 and the distributor 100 may ultimately be determined based on whether the communication protocol required for the fuel supply protocol is supported by the hydrogen electric vehicle 200 and / or the distributor 100 (considering the priority of the prepared fuel supply protocol). Whether the communication protocol required for the fuel supply protocol is supported by the hydrogen electric vehicle 200 and / or the distributor 100 can be determined by the hydrogen electric vehicle 200, the distributor 100, or both the hydrogen electric vehicle 200 and the distributor 100.

[0095] In operation S330 of determining the communication protocol, the communication protocol may be determined based on at least one of interoperability between the dispenser 100 and the hydrogen electric vehicle 200 and / or UCDC backward compatibility.

[0096] The hydrogen fuel supply communication method according to an exemplary embodiment of the present disclosure may further include the following operations: an operation of detecting (sensing or checking) the coupling between the socket of the hydrogen electric vehicle 200 and the nozzle of the dispenser 100 (determining whether the socket and the nozzle are coupled); and an operation of receiving information transmitted by the communication sequence from the hydrogen electric vehicle 200 in a state where the coupling is detected (or, when the socket and the nozzle are coupled).

[0097] The hydrogen fuel supply communication method according to the exemplary embodiment of the present disclosure may further include a pairing operation performed by identifying whether the hydrogen electric vehicle 200 indicated by the information transferred by the communication sequence and the hydrogen electric vehicle 200 coupled to the dispenser 100 are the same entity.

[0098] The hydrogen fuel supply communication method according to the exemplary embodiment of the present disclosure may further include the following operations: an operation of detecting (sensing or checking) the coupling of the socket of the hydrogen electric vehicle 200 and the nozzle of the dispenser 100 (determining whether the socket and the nozzle are coupled); an operation of waiting to receive a communication sequence from the hydrogen electric vehicle 200 within a certain time interval in a state where the coupling is being detected (or, in the case where the socket and the nozzle are coupled); and an operation of identifying a communication protocol that the hydrogen electric vehicle 200 can support based on whether the communication sequence is received from the hydrogen electric vehicle 200 within a certain time interval. The dispenser 100 may determine whether the communication sequence is received from the hydrogen electric vehicle 200 within a certain time interval.

[0099] In the event that no communication sequence is detected or received from the hydrogen electric vehicle 200 within a certain time interval, the dispenser 100 may consider that the hydrogen electric vehicle 200 does not support the communication device and may continue the hydrogen supply process without communication.

[0100] The hydrogen fuel supply communication method according to the exemplary embodiment of the present disclosure may further include an operation of determining a hydrogen fuel supply parameter based on the determined hydrogen fuel supply protocol. In this case, an operation of supplying hydrogen fluid fuel may be performed based on the hydrogen fuel supply protocol and the hydrogen fuel supply parameter.

[0101] The operation S330 of determining the communication protocol may include the operation of initiating communication protocol negotiation if it is determined that bidirectional communication can be supported between the hydrogen electric vehicle 200 and the dispenser 100 based on the information transferred through the communication sequence; and the operation of determining the communication protocol through the communication protocol negotiation.

[0102] The operation of determining the hydrogen fuel supply protocol may include an operation of initiating a hydrogen fuel supply protocol negotiation between the hydrogen electric vehicle 200 and the dispenser 100, and an operation of determining the hydrogen fuel supply protocol through the hydrogen fuel supply protocol negotiation.

[0103] The hydrogen fuel supply communication method according to the exemplary embodiment of the present disclosure may further include the following operations: starting hydrogen fuel supply parameter negotiation between the hydrogen electric vehicle 200 and the dispenser 100 based on the hydrogen fuel supply protocol; and determining hydrogen fuel supply parameters through the hydrogen fuel supply parameter negotiation.

[0104] Figure 3 and Figure 4 is a conceptual diagram illustrating sub operations performed when the hydrogen fuel supply communication method according to the exemplary embodiment of the present disclosure is executed.

[0105] Figure 3 Sub-operations S400 - S482 of the hydrogen fuel supply communication method according to the first embodiment of the present disclosure are shown.

[0106] exist Figure 3 In an embodiment, the use case (UC0) addressing communication interoperability (S400) may precede all other sub-operations S420-S482.

[0107] Figure 4 Sub-operations S500 - S582 of the hydrogen fuel supply communication method according to the second embodiment of the present disclosure are shown.

[0108] exist Figure 4 In the embodiment of the invention, the use case (UC1) of the discovery and pairing operation (S500) may correspond to solving Figure 3 The use case (UC0) of communication interoperability (S400) is shown in FIG.

[0109] Also refer to Figure 3 and Figure 4 , the use case (UC0) of addressing communication interoperability S400 and the use case (UC1) of discovery and pairing operation S500 may correspond to a process including checking, identifying, judging, verifying, and / or selecting to allow interoperability between different implementations based on multiple technologies. For example, implementations based on different standards such as SAE standards and ISO standards may be considered. In addition, it may be assumed that each of these implementations may be based on a communication type, such as no communication, one-way IrDA communication, and / or other wired or wireless communications (such as and advanced communication (AC) technology). Examples of advanced communication technologies may be two-way communication technologies, and may include wired or wireless communication technologies.

[0110] Similar to Figure 3 In the embodiment of the present invention, the use case (UC0) of communication interoperability S400 and the use case (UC1) of discovery and pairing operation S500 are solved. Figure 4 However, in another embodiment of the present disclosure, the use case (UC0) for solving communication interoperability S400 may be executed at any stage throughout all sub-operations. That is, when communication interoperability and / or compatibility need to be determined, the use case (UC0) for solving communication interoperability S400 may be executed at any stage.

[0111] Respectively Figure 3 and Figure 4 The use case (UC3) of addressing communication interoperability operations S420 and S420 shown in FIG. 4 may be a process of determining the type and version of communication protocols between devices including those supporting different sets of protocols. The UCDC level may also be a subject of negotiation. When there are multiple protocols commonly supported by the devices, a preferred protocol may be selected.

[0112] Figure 3The use case (UC4) of the authorization operation S422 shown in FIG. 4 may be a process of allowing a user to be authorized for fuel delivery without interrupting communication. The dispenser 100 and the vehicle may wait for the arrival of the authorization result before starting the fuel delivery.

[0113] Figure 3 The use case (UC5) of the parameter exchange operation S430 shown in FIG. 4 may correspond to Figure 4 4 and 5. The example of the fuel supply protocol negotiation operation S530 (UC4) and the example of the fuel supply parameter negotiation operation S532 (UC5) shown in FIG. These processes S430, S530, and S532 may be processes for exchanging protocols and parameters necessary for safe and efficient fuel supply between the hydrogen electric vehicle 200 and the dispenser 100. For example, information such as physical limitations, fuel supply methods, and fuel supply targets may be exchanged and subject to negotiation.

[0114] Respectively Figure 3 and Figure 4 The use case (UC6) of the safety registration operations S440 and S540 shown in FIG. 5 may be a process of ensuring safe fuel supply before starting the fuel supply process. An example of the operation at this stage may include checking for leaks.

[0115] Respectively Figure 3 and Figure 4 The use case (UC7) of the fuel supply control and monitoring operations S450 and S550 shown in FIG. 1 may be a process for monitoring and controlling the entire fuel supply process in order to perform the fuel supply process safely and efficiently.

[0116] Respectively Figure 3 and Figure 4 The use case (UC8) of the safety exit operations S460 and S560 shown in FIG. 1 may be a process of ensuring safety in the process of completing fuel supply and pulling out the nozzle from the socket. An example of the operation at this stage may include checking for problems at the nozzle.

[0117] Respectively Figure 3 and Figure 4 The use case (UC8) of terminating operations S470 and S570 shown in the figure may be a process of completing the fuel supply process. An example of the operation at this stage may include exchanging fuel supply results. The fuel supply result may include the hydrogen delivery amount.

[0118] Figure 3 The use case (UC11) of the security operation S482 shown in Figure 4 The use case (UC2) of the communication security operation S510 shown in FIG. 5 may be a process of protecting communication processes and data to protect user privacy and ensure a safe and secure fuel supply experience.

[0119] In the case of supporting bidirectional communication between the hydrogen electric vehicle 200 and the dispenser 100, the security process can be performed in the order of bidirectional authentication, key exchange, and secure channel establishment. Messages can be exchanged while maintaining integrity, authenticity, and confidentiality to prevent the messages from being exposed to external entities.

[0120] Figure 3 The use case (UC10) of the emergency processing operation S480 shown in Figure 4 The use case (UC10) of the error handling operation S580 and the use case (UC11) of the emergency handling operation S582 shown in the figure may be a process for effectively handling an emergency event to prevent any safety accident. The emergency event may include various situations, such as a situation where the dispenser 100 detects instability of temperature or pressure conditions during fuel supply and determines to suspend or stop the fuel supply process, and a situation where the hydrogen electric vehicle 200 urgently requests to stop the fuel supply process.

[0121] Figure 4 The use case (UC1) of the discovery and pairing operation S500 shown in FIG. 1 may include an operation in which the dispenser 100 and the hydrogen electric vehicle 200 detect and recognize each other through communication after the nozzle of the dispenser 100 is coupled to the socket of the hydrogen electric vehicle 200 .

[0122] For example, when the hydrogen electric vehicle 200 having the identifier "V1" determines that the identifier of the dispenser 100 connected to the hydrogen electric vehicle 200 itself is "DIS2" and sends a message such as "Hello DIS2", if the actual identifier of the dispenser 100 is "DIS2" and the dispenser 100 responds to the hydrogen electric vehicle 200 with the message "Hello V1", the pairing process can be completed. When the two dispensers "DIS1" and "DIS2" are located near the hydrogen electric vehicle 200 "V1", the hydrogen electric vehicle 200 "V1" can accurately identify the dispenser 100 to which it is physically connected to prepare for hydrogen fuel supply.

[0123] The pairing process may be performed by exchanging information, such as a pairing ID, between entities.

[0124] Figure 5 is a conceptual diagram illustrating an example of an interoperability determination standard that forms a basis for a hydrogen fuel supply communication method according to an exemplary embodiment of the present disclosure.

[0125] Figure 5 Four examples of communication types are shown in FIG.

[0126] Devices supporting protocols based on Standard 1 are compatible with each other.

[0127] Devices supporting the protocol based on Standard 2 may be compatible with each other. The protocol based on Standard 2 may be a protocol supporting bidirectional communication.

[0128] One of the purposes of the present disclosure is to ensure compatibility between devices supporting a protocol based on Standard 1 and devices supporting a protocol based on Standard 2 in support of bidirectional communication.

[0129] To achieve this purpose, according to the communication types supported by the devices according to the exemplary embodiments of the present disclosure, four types of exemplary cases forming the basis of the interoperability determination criteria may be specified as follows.

[0130] Type 1: No communication is supported. However, a non-communication method according to Standard 1 can be implemented.

[0131] Type 2: Supports one-way IrDA communication.

[0132] Type 3: Only supports Advanced Communications (AC).

[0133] Type 4: Supports two-way advanced communications and one-way IrDA.

[0134] According to an exemplary embodiment of the present disclosure, a method for maximizing interoperability between four communication types is provided. For example, when a type 4 device supporting AC and IrDA encounters a type 2 device supporting IrDA, the type 4 device will be able to recognize that advanced communication (AC) is not available, and the communication between the devices may be limited to the one-way IrDA communication supported by the type 2 device.

[0135] For example, when a Type 3 device supporting AC for UCDC2 encounters a Type 3 device supporting AC for UCDC3 / IrDA, no common protocol is recognized as being shared between the devices, and thus only no communication method is available between the devices.

[0136] When a Type 4 device supporting ACv1 / IrDA encounters a Type 4 device supporting ACv2 / IrDA, a mismatch occurs in the version of the Advanced Communication (AC) protocol, and thus communication between the devices is limited to one-way IrDA communication.

[0137] Return to reference Figure 5 , Cases 1 to 3 illustrate scenarios in which communication of each device is limited to no communication due to the capability of a corresponding device having a type of Type 1.

[0138] In case 1, a device of type 2 encounters a device of type 1, and the device of type 2 may fall back to type 1. Although not shown in the figure, in another embodiment of the present disclosure, when a device of type 2 encounters a device of type 3, similar to case 1, the two devices may fall back to type 1.

[0139] In case 2, a type 3 device encounters a type 1 device, and the type 3 device may fall back to type 1. When a type 3 device encounters a type 2 device, the type 3 device may also fall back to type 1 similar to case 2.

[0140] In case 4, a device of type 4 encounters a device of type 2, and the device of type 4 may fall back to type 2, and the communication of the devices may be limited to one-way IrDA communication.

[0141] In case 5 where a type 4 device encounters a type 3 device, Advanced Communication (AC) supported by both devices may be adopted as a communication scheme. In this case, one-way IrDA communication of the type 4 device may not be available.

[0142] The communication types may be assigned the following priorities. If Advanced Communication (AC) is supported, AC is assigned a higher priority than One-Way IrDA. One-Way IrDA is assigned a higher priority than No Communication. However, when a Type 2 device and a Type 3 device encounter each other but do not find a common communication protocol, both devices may fall back to Type 1.

[0143] When type 4 devices with a common communication protocol encounter each other, the common communication protocol can be selected. However, if there is no common communication protocol, the device can fall back to type 3 or type 2.

[0144] When type 3 devices with a common communication protocol encounter each other, the common communication protocol can be selected. However, if there is no common communication protocol, the devices can fall back to type 1.

[0145] In the physical layer for such fuel supply communication, in addition to unidirectional IrDA communication, wired communication schemes such as serial communication, power line communication (e.g., ISO 15118 for conduction communication), and Ethernet (e.g., a new candidate for ISO 15118) can also be used.

[0146] Advanced communication (AC) may be a wired or wireless two-way communication scheme, and the wireless communication scheme may include various communication schemes such as 5G, WLAN, BLE, ETH, UWB, RFID, and NFC. Known protocols such as TCP / IP may be used as communication protocols for such communication schemes.

[0147] For example, wireless communication schemes that may be considered may include Bluetooth, WLAN / Wi-Fi, UWB (IEC restriction considerations for ACD), or NFC.

[0148] Wired communication schemes that can be considered in AC may include bidirectional IrDA, serial communication, or automotive Ethernet.

[0149] In addition, hybrid communication schemes can also be considered.

[0150] In a hybrid communication scheme combining IrDA and wired communication schemes, hardware changes on the nozzle side and the socket side may be required.

[0151] In a hybrid communication scheme combining IrDA and wireless communication schemes, no hardware changes may be required on the nozzle side and the socket side, but additional communication equipment may be required.

[0152] Figure 6 is a table summarizing interoperability determination standards forming the basis of the hydrogen supply communication method according to an exemplary embodiment of the present disclosure.

[0153] exist Figure 6 middle, Figure 5 The example interoperability determination criteria shown in FIG. 1 are summarized in the form of an interoperability matrix.

[0154] When the hydrogen electric vehicle 200 and the dispenser 100 recognize each other, if it is recognized that the hydrogen electric vehicle 200 and the dispenser 100 have a common or identical implementation, a common protocol may be applied to communication therebetween. This is represented by the main diagonal portion of the matrix.

[0155] When a non-communicating device on one side encounters a one-way IrDA communicating device on the other side, the one-way IrDA communicating device may fall back to no communication which is normally covered by both devices.

[0156] If the devices on both sides support bidirectional communication, bidirectional communication can be applied regardless of whether unidirectional IrDA is supported. However, compatibility according to the UCDC level can be additionally considered.

[0157] When a two-way communication device on one side encounters a non-communication device on the other side, the two-way communication device can fall back to no communication.

[0158] When a two-way communication device on one side encounters a one-way IrDA device on the other side, it can determine whether to select the one-way IrDA according to whether the two-way communication device can support the one-way IrDA communication.

[0159] If a two-way communication device does not support one-way IrDA communication, the two devices may fall back to no communication.

[0160] Figure 5 and Figure 6The interoperability determination shown in requires that a Standard 2 based device supporting two-way communication must support a Standard 1 based fuel delivery method regardless of whether or not one-way IrDA communication (Requirement 1) is supported.

[0161] Devices based on Standard 2 that support bidirectional communication must be able to detect that the other device supports Standard 2 (Requirement 2).

[0162] If the hydrogen electric vehicle 200 or dispenser 100 does not support Standard 2, then Standard 2 based devices must fall back to a compatible Standard 1 based approach (Requirement 3).

[0163] Figure 7 is a conceptual diagram illustrating an interoperability determination standard forming a basis for a hydrogen fuel supply communication method according to an exemplary embodiment of the present disclosure.

[0164] exist Figure 7 In the present invention, the communication and data exchange methods for processing control and safety functions are classified according to the UCDC level. It can be seen that the UCDC level is backward compatible. In another embodiment of the present disclosure, backward compatibility can be effectively applied to each of no communication, one-way communication, two-way communication and a combination thereof, regardless of the UCDC.

[0165] In the case of UCDC-0, no data is transmitted. Even if data is transmitted, the communicated data is not used for the fuel supply protocol or related safety functions.

[0166] In the case of UCDC-1, the communicated data is not used for safety functions. The transmitted static data can be used to improve the performance of the fuel supply protocol. The transmitted dynamic data can be used to reduce the risk of process deviations during the fuel supply protocol.

[0167] In the case of UCDC-2, all data used in UCDC-1 are available and the transmitted static data can be used for safety functions.

[0168] In the case of UCDC-3, all types of data including static data and dynamic data can be used for dynamic control or security functions of the protocol.

[0169] All devices are assumed to support UCDC-0.

[0170] Standard 2 based devices that support bidirectional communication MAY support the lower of the two UCDC levels (Requirement 4).

[0171] Between Standard 2 based devices supporting different UCDC levels, data corresponding to the highest UCDC level supported by both devices may be used (Requirement 5).

[0172] For example, the connection compatibility check process in the case where the WLAN communication technology is used as the advanced communication (AC) may be performed as follows.

[0173] Scene 1

[0174] Step 0: The distributor 100 is prepared with an access point (AP), ie, a wireless router.

[0175] The access point may send out a beacon signal so that the hydrogen electric vehicle 200 may access the fuel supply station and the vehicle supply equipment (VSE).

[0176] Step 1: The hydrogen electric vehicle 200 approaching the dispenser 100 scans and finds the dispenser 100. Afterwards, the hydrogen electric vehicle 200 and the dispenser 100 may establish a bidirectional WLAN link.

[0177] Scene 2

[0178] The distributor 100 does not support bidirectional WLAN, but supports unidirectional IrDA (Type 2).

[0179] The hydrogen electric vehicle 200 as a type 4 device approaching the dispenser 100 scans the dispenser 100 but cannot detect the dispenser 100 .

[0180] After the nozzle and socket are docked, communication is initiated via unidirectional IrDA (Type 2).

[0181] Scene 3

[0182] The dispenser 100 can support bidirectional WLAN and unidirectional IrDA (Type 4). An electric vehicle 200, which is a hydrogen type 2 device, is parked in front of the dispenser 100. The dispenser 100 does not detect a WLAN client.

[0183] After the nozzle and the socket are plugged in, communication is initiated via unidirectional IrDA (Type 2). When the UCDC level is 1 or higher, the data that can be shared through communication is as follows: General communication data sent by the distributor 100 to the hydrogen electric vehicle 200 -Fuel delivery pressure

[0184] - Fuel delivery temperature

[0185] - Delivery flow rate

[0186] -Maximum fuel delivery pressure

[0187] -Minimum fuel delivery temperature

[0188] -Maximum fuel delivery temperature

[0189] -Maximum delivery flow rate

[0190] General communication data sent by the hydrogen electric vehicle 200 to the distributor 100 -Socket Type (RT)

[0191] -Tank volume (TV)

[0192] -Measured pressure (MP)

[0193] -Measured temperature (MT)

[0194] -Work pressure

[0195] -Maximum working pressure

[0196] -Maximum operating temperature

[0197] As mentioned above, in Figure 3 In the use case (UC5) of parameter exchange operation S430 shown in FIG, hydrogen electric vehicle 200 and dispenser 100 may exchange parameters for safe and efficient fuel supply. The exchanged parameters may include fuel supply method parameters, physical characteristics / limitations, fuel supply targets, and environmental parameters.

[0198] The fuel parameters sent by the distributor 100 to the hydrogen electric vehicle 200 are

[0199] -(Physical parameters) Maximum fuel delivery pressure, maximum fuel delivery temperature, minimum fuel delivery temperature, maximum fuel delivery flow rate, etc.

[0200] - (Protocol-specific) Fuel Supply Protocol Class

[0201] -(Auxiliary parameter) Ambient temperature

[0202] -(Fueling target parameters) target SOC, target duration (expected), target final tank pressure, target APR, target final tank temperature

[0203] -(Monitoring parameter) Current fuel delivery temperature

[0204] Fuel supply parameters sent by hydrogen electric vehicle 200 to dispenser 100

[0205] - (Physical parameters) Socket type (e.g. H35 or H70), Maximum allowable tank (CHSS) pressure, Maximum allowable tank (CHSS) temperature, Maximum allowable flow, FCEV tank (CHSS) volume

[0206] -(Monitoring parameters) Current tank (CHSS) temperature, current tank (CHSS) pressure

[0207] Typically, one-way / two-way communication makes it difficult to ensure that a message has been properly delivered or received. In addition, the sending device does not know whether the information contained in the message sent by one-way / two-way communication has been used by the other device. In addition, one-way communication provides almost no security function.

[0208] However, the dispenser 100 needs to notify the hydrogen electric vehicle 200 of errors and emergencies, and notify the start and end of the hydrogen fuel supply process.

[0209] Taking these aspects into consideration, the present disclosure is able to pre-identify an interoperable protocol between the dispenser 100 and the hydrogen electric vehicle 200 and utilize the interoperable protocol information to establish and provide safety, security, and control functions of a hydrogen fuel supply process balanced with the compatible protocol.

[0210] Secure communication may be required in certain mission-critical systems. Exemplary embodiments of the present disclosure may provide appropriate security functions when transmitting data while preventing unnecessary external exposure of data according to the level of compatible protocols.

[0211] Exemplary embodiments of the present disclosure may effectively enhance security and improve the handling of emergencies and errors.

[0212] Exemplary embodiments of the present disclosure may allow for ensuring compatibility of communication protocols and bidirectional communication capabilities, and enhance safety and efficiency of hydrogen fuel supply / delivery processes. Bidirectional communication may further enhance safety and efficiency by providing protocols for requesting information and responding to requests.

[0213] The exemplary embodiments of the present disclosure can provide a safe and efficient hydrogen fuel supply / delivery process and a communication protocol supporting the process, which can achieve fuel supply status monitoring, safety measurement / control through collaboration, communication security and user experience. Communication security can ensure the safety of mission-critical systems.

[0214] Exemplary embodiments of the present disclosure may provide a framework for providing communication interoperability between a hydrogen electric vehicle (FCEV) 200 and a dispenser 100, and for dividing the problem existing in the entire FECV hydrogen fuel supply process into multiple sub-problems to solve the problem by dividing and conquering the problem.

[0215] Exemplary embodiments of the present disclosure may ensure excellent compatibility and stability through a layered approach to common elements related to physical, transport, and encoding aspects.

[0216] Figure 8 and Fig. 9 is a sequence diagram illustrating a communication protocol negotiation process performed when the hydrogen fuel supply communication method according to the exemplary embodiment of the present disclosure is executed.

[0217] Reference Figure 8, the hydrogen electric vehicle 200 may transmit the compatible communication protocol information, the hydrogen fuel supply protocol information, and the UCDC level to the dispenser 100. At this time, the hydrogen electric vehicle 200 may transmit the compatible communication protocol information and the UCDC level information together with the priority information.

[0218] The distributor 100 may select and / or determine a compatible protocol and UCDC level based on the information received from the hydrogen electric vehicle 200, and respond to the hydrogen electric vehicle 200. In this process, the distributor 100 may determine whether fallback is necessary, and finally determine the protocol in consideration of the priority of the communication type supported by the hydrogen electric vehicle 200.

[0219] Reference Fig. 9 , the hydrogen electric vehicle 200 may send a negotiation request message requesting protocol negotiation to the distributor 100. At this time, the distributor 100 may provide the hydrogen electric vehicle 200 with information of protocols supported by the distributor 100. The hydrogen electric vehicle 200 may select the most suitable protocol among the protocols whose information is received from the distributor 100, and notify the distributor 100 of the selected protocol. Protocol negotiation may be performed between two entities through such processing.

[0220] Can be Figure 8 and Fig. 9 Examples of protocols and UCDC levels considered in may include SAE-J2601-2020-no_com, SAE-J2601-2020-TLookup, SAE-J2601-2020-MCForm, ISO 19885-3-2023-UCDC-1, ISO 19885-3-2023-UCDC-2, and ISO 19885-3-2023-UCDC-3.

[0221] Fig.10 is a sequence diagram illustrating an authorization process performed when the hydrogen fuel supply communication method according to the exemplary embodiment of the present disclosure is executed. Fig.10 The process shown in can be used to check whether the hydrogen electric vehicle 200 is authorized for fueling.

[0222] Reference Fig.10 , the hydrogen electric vehicle 200 may request an authorization method from the distributor 100 .

[0223] The dispenser 100 may respond to the hydrogen electric vehicle 200 by providing a communication means or a payment means for authorization of the hydrogen electric vehicle 200 .

[0224] The hydrogen electric vehicle 200 may select one of the authorization methods (eg, RFID) to request authorization.

[0225] Subsequently, the authorization can be completed through communication between the two parties, and the authorization process can be terminated after confirmation by both parties.

[0226] Fig.11 is a sequence diagram illustrating a security registration process performed when the hydrogen fuel supply communication method according to the exemplary embodiment of the present disclosure is executed.

[0227] Right now, Fig.11 The safety check process before the start of fuel supply is shown.

[0228] Check that the nozzle and socket are locked.

[0229] Check for leaks.

[0230] Then, check the last minute status.

[0231] Fig.11 The safety check process shown in can also be executed by a communication sequence initiated by the hydrogen electric vehicle 200.

[0232] During this process, the dispenser 100 may report information such as connector lock status, leak check status, and estimated FCEV tank volume to the hydrogen electric vehicle 200 .

[0233] Meanwhile, the hydrogen electric vehicle 200 may report information such as a stationary state to the dispenser 100 .

[0234] Fig.12 is a sequence diagram showing a fuel supply control and monitoring process performed when the hydrogen fuel supply communication method according to the exemplary embodiment of the present disclosure is executed.

[0235] Fig.12 Involves a periodic or continuous process for the exchange of information on the status of the fuel supply.

[0236] The hydrogen electric vehicle 200 can share information such as the current temperature and the current pressure with the dispenser 100. The dispenser 100 can share information such as the injection force and the fuel supply plan with the hydrogen electric vehicle 200 in advance. In addition, the dispenser 100 can share status information such as the start or stop of fuel supply, and ramp up or ramp down with the hydrogen electric vehicle 200.

[0237] Sometimes, the hydrogen electric vehicle 200 may provide the dispenser 100 with control information for safety, such as start, stop, deceleration, acceleration, target pressure, and pause of fuel supply.

[0238] The information that may be reported by the dispenser 100 to the hydrogen electric vehicle 200 in this process may include the following information:

[0239] (State 1) Not ready, ready, fuel supply, paused, terminated, emergency stop, current ambient temperature, current PRR (pressure ramp rate Mbar / min), delivered fuel flow rate (g / sec), current fuel delivery temperature (same as precooling temperature), current fuel delivery pressure

[0240] (State 2) Use pause (true / false), use cold dispenser (true / false), use fallback (true / false), fuel supply stop reason (normal, error code), current fuel hydrogen amount (g)

[0241] (Target parameter update) Target final tank pressure, target final tank temperature, target fuel supply APR, target SOC, current SOC, estimated remaining duration

[0242] The information that may be reported by the hydrogen electric vehicle 200 to the dispenser 100 in this process may include the following information:

[0243] (Control) Actions: Start, Pause, Resume, Stop

[0244] (Report) Current tank temperature, current tank pressure

[0245] Fig.12 The hydrogen fuel supply control and monitoring process shown in FIG. 2 may also be performed through a communication sequence initiated by the hydrogen electric vehicle 200 .

[0246] Fig.13 is a sequence diagram showing a safety exit process performed when the hydrogen fuel supply communication method according to the exemplary embodiment of the present disclosure is executed.

[0247] Reference Fig.13 , information such as whether the connector is frozen or not stuck, whether the nozzle is closed, and whether the connector is unlocked can be checked, and the inspection results can be shared with the dispenser 100.

[0248] The hydrogen electric vehicle 200 may periodically notify that the connector inspection status is in good condition. If the fuel supply has been completed, the dispenser 100 may terminate the process and proceed to the termination process.

[0249] Information that can be exchanged between the hydrogen electric vehicle 200 and the dispenser 100 in this process may include connector unlock status and connector problems such as freezing and jamming. When the nozzle cannot be separated from the socket, this state needs to be reported immediately because it may hinder subsequent processing.

[0250] Fig.14 is a sequence diagram showing a termination process performed when the hydrogen fuel supply communication method according to the exemplary embodiment of the present disclosure is executed.

[0251] Reference Fig.14 , the hydrogen electric vehicle 200 may request information about how much hydrogen has been supplied from the dispenser 100. The dispenser 100 may respond to the hydrogen electric vehicle 200 with the amount of hydrogen supplied by the fuel. Thereafter, the termination process may be completed after the confirmation of the hydrogen electric vehicle 200.

[0252] The dispenser 100 may provide the hydrogen electric vehicle 200 with the following information.

[0253] - Final SOC, final average fueling rate (APRR), final measured tank pressure, actual fueling duration, actual fueling hydrogen quantity

[0254] The hydrogen electric vehicle 200 may provide the dispenser 100 with the following information.

[0255] - Current tank temperature, current tank pressure

[0256] Fig.15 is a sequence diagram showing an emergency processing procedure performed when the hydrogen fuel supply communication method according to the exemplary embodiment of the present disclosure is executed.

[0257] Reference Fig.15 , the hydrogen electric vehicle 200 can request action from the dispenser 100 at any time regarding a safety-related event.

[0258] For example, the hydrogen electric vehicle 200 may request stop / termination, pause, or deceleration of fuel supply due to high pressure, and require the dispenser 100 to respond to the request.

[0259] Although in the above-described embodiment, the hydrogen electric vehicle 200 initiates the first communication sequence, it is apparent to those skilled in the art that in another embodiment of the present disclosure, the hydrogen electric vehicle 200 or the dispenser 100 may initiate the first communication sequence.

[0260] Fig.16 is a block diagram showing a general configuration of a computing system that may be installed on the dispenser 100 and / or the FCEV as the hydrogen fuel supply communication device according to an exemplary embodiment of the present disclosure.

[0261] Although in Figures 1 to 15 Although not shown in the figure, a processor and a memory may be electrically connected to each component, and the operation of each component may be controlled or managed by the processor.

[0262] At least some of the processes of the hydrogen fuel supply communication method for fuel supply to FCEV according to an exemplary embodiment of the present disclosure may be performed by Fig.16 The computing system 1000 executes.

[0263] Reference Fig.16, a computing system 1000 according to an embodiment of the present disclosure may include a processor 1100 , a memory 1200 , a communication interface 1300 , a storage device 1400 , an input interface 1500 and an output interface 1600 , and a system bus 1700 .

[0264] The computing system 1000 according to an embodiment of the present disclosure may include at least one processor 1100 and a memory 1200 storing a program instruction instructing the at least one processor 1100 to perform at least one processing step. At least some operations or processing steps of the method according to an embodiment of the present disclosure may be performed by the at least one processor 1100 loading and executing the program instruction from the memory 1200.

[0265] The processor 1100 that executes program instructions or commands stored in the memory 1200 may include a central processing unit (CPU) or a graphics processing unit (GPU), or may be implemented by another dedicated processor suitable for executing the method of the present disclosure.

[0266] Each of the memory 1200 and the storage device 1400 may include at least one of a volatile storage medium and a nonvolatile storage medium. For example, the memory 1200 may include at least one of a read-only memory (ROM) and a random access memory (RAM).

[0267] Furthermore, the computing system 1000 may include a communication interface 1300 that performs communication through a wireless communication network.

[0268] In addition, the computing system 1000 may further include a storage device 1400 , an input interface 1500 , and an output interface 1600 .

[0269] The components of the computing system 1000 may be connected to each other through the system bus 1700 so as to communicate with each other.

[0270] The computing system 1000 according to an exemplary embodiment of the present disclosure may be any data processing device capable of communicating over a network, such as a desktop computer, a laptop computer, a notebook PC, a smart phone, a tablet PC, a mobile phone, a smart watch, smart glasses, an e-book reader, a portable multimedia player (PMP), a portable game console, a navigation device, a digital camera, a digital multimedia broadcasting (DMB) player, a digital audio recorder, a digital audio player, a digital video recorder, a digital video player, and a personal digital assistant (PDA).

[0271] The hydrogen fuel supply communication device according to an exemplary embodiment of the present disclosure is installed on a hydrogen-fueled mobile body or a dispenser 100 to perform communication between the hydrogen-fueled mobile body and the dispenser 100 , and may include a processor 1100 that receives and executes at least a program instruction from a memory 1200 .

[0272] By executing the at least one program instruction, the processor 1100 can identify the communication protocol supported by the hydrogen-fueled mobile body and the communication protocol supported by the distributor 100 based on the communication sequence performed by the hydrogen-fueled mobile body and the information transmitted by the communication sequence, and determine the communication protocol to be executed between the hydrogen-fueled mobile body and the distributor 100 based on the communication protocol supported by the hydrogen-fueled mobile body and the communication protocol supported by the distributor 100.

[0273] By executing at least one program instruction, the processor 1100 can determine a hydrogen fuel supply protocol for supplying hydrogen fluid fuel to a mobile body running on hydrogen fuel based on information transmitted by the communication sequence, and supply hydrogen fluid fuel to the mobile body running on hydrogen fuel based on the hydrogen fuel supply protocol.

[0274] By executing at least one program instruction, the processor 1100 can determine communication protocol candidates based on the communication protocols supported by the hydrogen-fueled mobile body and the communication protocols supported by the distributor 100, and determine the communication protocol from the communication protocol candidates based on the determination of whether the communication protocol candidates correspond to the hydrogen fuel supply protocol for supplying hydrogen fluid fuel to the hydrogen-fueled mobile body.

[0275] By executing at least one program instruction, the processor 1100 may determine the communication protocol based on at least one of the following: interoperability between the dispenser 100 and a mobile object fueled by hydrogen and / or UCDC backward compatibility.

[0276] By executing at least one program instruction, the processor 1100 can detect the coupling between the socket of the mobile body using hydrogen as fuel and the nozzle of the dispenser 100 (determine that the socket and the nozzle are coupled), and receive information transmitted through the communication sequence from the mobile body using hydrogen as fuel when the coupling (the socket and the nozzle are coupled) is detected.

[0277] By executing at least one program instruction, the processor 1100 may perform a pairing process to identify whether the hydrogen-fueled mobile object indicated by the information transmitted by the communication sequence and the hydrogen-fueled mobile object coupled to the dispenser 100 are the same entity.

[0278] By executing at least one program instruction, the processor 1100 can detect the coupling between the socket of the hydrogen-fueled mobile body and the nozzle of the dispenser 100 (determine that the socket and the nozzle are coupled), prepare to receive a communication sequence from the hydrogen-fueled mobile body within a certain time interval when the coupling (the socket and the nozzle are coupled) is detected, and identify the communication protocol that the hydrogen-fueled mobile body can support based on the determination of whether the communication sequence from the hydrogen-fueled mobile body is received within a certain time interval.

[0279] By executing at least one program instruction, the processor 1100 may determine a hydrogen fuel supply parameter based on the determined hydrogen fuel supply protocol, and supply hydrogen fluid fuel to a mobile object using hydrogen as fuel based on the hydrogen fuel supply protocol and the hydrogen fuel supply parameter.

[0280] By executing at least one program instruction, processor 1100 may initiate communication protocol negotiation if it is determined based on information transmitted by the communication sequence that bidirectional communication is supported between the mobile object using hydrogen as fuel and dispenser 100, and may determine the communication protocol through the communication protocol negotiation.

[0281] By executing at least one program instruction, the processor 1100 may initiate a hydrogen fuel supply protocol negotiation between a mobile object using hydrogen as fuel and the dispenser 100, and may determine a hydrogen fuel supply protocol through the hydrogen fuel supply protocol negotiation.

[0282] By executing at least one program instruction, processor 1100 may initiate hydrogen fuel supply parameter negotiation between a mobile object using hydrogen as fuel and dispenser 100 based on the hydrogen fuel supply protocol, and may determine hydrogen fuel supply parameters through the hydrogen fuel supply parameter negotiation.

[0283] The apparatus and method according to the exemplary embodiments of the present disclosure can be implemented by computer-readable program codes or instructions stored on a computer-readable intangible recording medium. Computer-readable recording media include all types of recording devices that store data that can be read by a computer system. Computer-readable recording media can be distributed on computer systems connected via a network so that computer-readable programs or codes can be stored and executed in a distributed manner.

[0284] Computer readable recording media may include hardware devices specifically configured to store and execute program instructions, such as ROM, RAM, and flash memory. Program instructions may include not only machine language codes generated by a compiler, but also high-level language codes executable by a computer using an interpreter, etc.

[0285] Some aspects of the above disclosure described in the context of the device may indicate the corresponding description according to the method of the present disclosure, and the module or device may correspond to the operation of the method or the feature of the operation. Similarly, some aspects described in the context of the method may be expressed by the feature of the module, item or the device corresponding thereto. Some or all operations of the method may be performed by using hardware devices (e.g., microprocessors, programmable computers, or electronic circuits). In some exemplary embodiments, one or more of the most important operations of the method may be performed by such a device.

[0286] In some exemplary embodiments, a programmable logic device such as a field-programmable gate array (FPGA) may be used to perform some or all of the functions of the methods described herein. In some exemplary embodiments, a FPGA may be operated with a microprocessor to perform one of the methods described herein. Typically, the methods are preferably performed by a hardware device.

[0287] The description of the present disclosure is essentially only exemplary, and therefore, variations that do not deviate from the essence of the present disclosure are intended to fall within the scope of the present disclosure. These changes should not be considered as departing from the spirit and scope of the present disclosure. Thus, it will be understood by those of ordinary skill in the art that various changes in form and detail may be made without departing from the spirit and scope defined by the appended claims.

Claims

1. A hydrogen fuel supply communication method performed by a distributor, wherein the distributor supplies hydrogen fluid fuel to a mobile body using hydrogen as fuel, the method comprising: identifying, based on a communication sequence performed by the hydrogen-powered mobile object and information communicated by the communication sequence, a communication protocol supported by the hydrogen-powered mobile object and a communication protocol supported by the distributor; as well as A communication protocol to be executed between the hydrogen-fueled mobile object and the dispenser is determined based on a communication protocol supported by the hydrogen-fueled mobile object and a communication protocol supported by the dispenser.

2. The hydrogen fuel supply communication method according to claim 1, wherein: The information conveyed by the communication sequence includes a usage classification of communication data (UCDC) that can be supported by the hydrogen-fueled mobile object.

3. The hydrogen fuel supply communication method according to claim 1, wherein: The communication protocol includes at least one detailed subordinate communication protocol, Wherein, the at least one detailed slave communication protocol corresponds to one of the following items: two-way communication, one-way communication and no communication.

4. The hydrogen fuel supply communication method according to claim 1, wherein: The information transmitted by the communication sequence includes at least one of the following items: at least one communication protocol that the hydrogen-fueled mobile body can support, and at least one hydrogen fuel supply protocol that the hydrogen-fueled mobile body can support for supplying hydrogen fluid fuel to the hydrogen-fueled mobile body.

5. The hydrogen fuel supply communication method according to claim 1, wherein: Determining the communication protocol includes: determining a communication protocol candidate based on a communication protocol supported by the hydrogen-fueled mobile object and a communication protocol supported by the distributor; and The communication protocol is determined from the communication protocol candidates based on whether the communication protocol candidates correspond to the hydrogen fuel supply protocol for supplying the hydrogen fluid fuel to the hydrogen-fueled mobile body.

6. The hydrogen fuel supply communication method according to claim 1, wherein: In determining the communication protocol, the communication protocol is determined based on at least one of: interoperability and backward compatibility between the dispenser and the hydrogen-fueled mobile object.

7. The hydrogen fuel supply communication method according to claim 1, further comprising: determining whether the socket of the mobile body fueled by hydrogen is coupled to the nozzle of the dispenser; as well as In a state where the socket is coupled to the nozzle, information transmitted by the communication sequence is received from the mobile object running on hydrogen as fuel.

8. The hydrogen fuel supply communication method according to claim 7, further comprising: Pairing is performed by identifying whether the hydrogen-fueled mobile object indicated by the information transmitted by the communication sequence and the hydrogen-fueled mobile object coupled to the dispenser are the same entity.

9. The hydrogen fuel supply communication method according to claim 1, further comprising: determining whether the socket of the mobile body fueled by hydrogen is coupled to the nozzle of the dispenser; in a state where the socket is coupled to the nozzle, being ready to receive the communication sequence from the hydrogen-fueled mobile object at predetermined time intervals; as well as Based on whether the communication sequence from the hydrogen-powered mobile object is received within the predetermined time interval, a communication protocol that the hydrogen-powered mobile object can support is identified.

10. The hydrogen fuel supply communication method according to claim 1, wherein: Determining the communication protocol includes: initiating communication protocol negotiation based on a determination that bidirectional communication is supported between the hydrogen-fueled mobile object and the dispenser based on information communicated by the communication sequence; and The communication protocol is determined through the communication protocol negotiation.

11. A hydrogen fuel supply communication device, mounted on a dispenser for supplying hydrogen fluid fuel to a mobile body using hydrogen as fuel, the hydrogen fuel supply communication device comprising: A memory storing at least one program instruction; as well as The processor, by executing the at least one program instruction stored in the memory, is configured to: identifying, based on a communication sequence performed by the hydrogen-powered mobile object and information conveyed by the communication sequence, a communication protocol supported by the hydrogen-powered mobile object and a communication protocol supported by the distributor; as well as A communication protocol to be executed between the hydrogen-fueled mobile object and the dispenser is determined based on a communication protocol supported by the hydrogen-fueled mobile object and a communication protocol supported by the dispenser.

12. The hydrogen fuel supply communication device according to claim 11, wherein: The information conveyed by the communication sequence includes a usage classification of communication data (UCDC) that can be supported by the hydrogen-powered mobile object.

13. The hydrogen fuel supply communication device according to claim 11, wherein: The communication protocol includes at least one detailed subordinate communication protocol, Wherein, the at least one detailed party-like slave communication protocol corresponds to one of the following items: two-way communication, one-way communication and no communication.

14. The hydrogen fuel supply communication device according to claim 11, wherein: The information transmitted by the communication sequence includes at least one of the following items: at least one communication protocol that the hydrogen-fueled mobile body can support, and at least one hydrogen fuel supply protocol that the hydrogen-fueled mobile body can support for supplying hydrogen fluid fuel to the hydrogen-fueled mobile body.

15. The hydrogen fuel supply communication device according to claim 11, wherein: In order to determine the communication protocol, the processor is further configured to: determining a communication protocol candidate based on a communication protocol supported by the hydrogen-fueled mobile object and a communication protocol supported by the distributor; as well as The communication protocol is determined from the communication protocol candidates based on whether the communication protocol candidates correspond to a hydrogen fuel supply protocol for supplying hydrogen fluid fuel to the hydrogen-fueled mobile body.

16. The hydrogen fuel supply communication device according to claim 11, wherein: The processor is further configured to determine the communication protocol based on at least one of: interoperability and backward compatibility between the dispenser and the hydrogen-fueled vehicle.

17. The hydrogen fuel supply communication device according to claim 11, by executing the at least one program instruction stored in the memory, the processor is further configured to: determining whether the receptacle of the hydrogen-fueled mobile object is coupled to the nozzle of the dispenser; and In a state where the socket is coupled to the nozzle, information transmitted by the communication sequence is received from the mobile object running on hydrogen as fuel.

18. The hydrogen fuel supply communication device according to claim 17, wherein, by executing the at least one program instruction stored in the memory, the processor is further configured to: Pairing is performed by identifying whether the hydrogen-fueled mobile object indicated by the information transmitted by the communication sequence and the hydrogen-fueled mobile object coupled to the dispenser are the same entity.

19. The hydrogen fuel supply communication device of claim 1, wherein, by executing the at least one program instruction stored in the memory, the processor is further configured to: determining whether the socket of the mobile body fueled by hydrogen is coupled to the nozzle of the dispenser; in a state where the socket is coupled to the nozzle, preparing to receive the communication sequence from the hydrogen-fueled mobile object at predetermined time intervals; and Based on whether the communication sequence from the hydrogen-powered mobile object is received within the predetermined time interval, a communication protocol that the hydrogen-powered mobile object can support is identified.

20. The hydrogen fuel supply communication device according to claim 11, wherein: In order to determine the communication protocol, the processor is further configured to: Initiating communication protocol negotiation based on determining that bidirectional communication is supported between the hydrogen-fueled mobile object and the dispenser according to the information transmitted by the communication sequence; as well as The communication protocol is determined through the communication protocol negotiation.

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