Interoperable communication device and method for refueling hydrogen electric vehicles

Abstract

A hydrogen filling communication method performed by a dispenser that supplies hydrogen fluid fuel to a hydrogen vehicle, and a hydrogen filling communication device mounted on the dispenser are provided. [Solution] The hydrogen filling communication method performed by a dispenser according to the present invention includes a step of identifying a communication protocol supported by the hydrogen vehicle and a communication protocol supported by the dispenser based on a communication sequence performed by the hydrogen vehicle and information transmitted by the communication sequence, and a step of determining a communication protocol to be performed between the hydrogen vehicle and the dispenser based on the communication protocol supported by the hydrogen vehicle and the communication protocol supported by the dispenser.

Description

[Technical Field]

[0001] The present invention relates to a communication technology for hydrogen fueling / supplying to hydrogen vehicles, and more particularly to a hydrogen fueling process that enhances safety and compatibility, a communication protocol for the process, and a method for determining the hydrogen fueling protocol. [Background technology]

[0002] The material described in this section is merely intended to provide background information for embodiments of the present invention and may not constitute prior art.

[0003] A hydrogen vehicle, hydrogen electric vehicle, or fuel cell electric vehicle (FCEV) is a non-polluting vehicle that runs on electrical energy generated by mixing high-pressure hydrogen stored in the vehicle with atmospheric air.

[0004] The concept of a hydrogen vehicle includes not only hydrogen electric vehicles or fuel cell vehicles that use hydrogen as an energy source and a fuel cell system, but also all mobility vehicles that use hydrogen as fuel to generate power and run on an internal combustion engine (ICE).

[0005] As is well known, hydrogen electric vehicles not only emit pure water (H2O) during the electricity generation process, but also have the function of removing ultrafine dust particles from the atmosphere while in operation, making them garnering attention as an environmentally friendly form of mobility for the future. Given that hydrogen, the fuel, is infinitely available on Earth and the energy production process is environmentally friendly, hydrogen electric vehicles are attracting widespread attention as a technology with the potential to be used across industries.

[0006] A hydrogen electric vehicle generates electrical energy by transferring high-pressure hydrogen stored safely in a hydrogen fuel tank and oxygen supplied through an air supply system to a fuel cell stack, where an electrochemical reaction occurs between the hydrogen and oxygen. The generated electrical energy is converted into kinetic energy by the drive motor to power the hydrogen electric vehicle, and the hydrogen electric vehicle has the advantage of emitting only pure water through the exhaust while in motion.

[0007] Fuel cell systems power hydrogen electric vehicles instead of internal combustion engines. Fuel cells are devices that generate the electrical energy needed for driving, and are sometimes called "tertiary batteries." Fuel cells convert thermal energy into electrical energy using an electrochemical reaction between oxygen and hydrogen. The electrical energy generated is the result of a purely chemical reaction, and unlike fossil fuels, does not produce exhaust gases such as carbon dioxide. There are various types of fuel cell systems, such as PEMFC, SOFC, and MCFC, depending on the fuel and material. The components that generate power using fuel cells in hydrogen electric vehicles include a fuel cell stack, hydrogen supply system, air supply system, and thermal management system.

[0008] The fuel cell stack requires the assistance of operating devices to efficiently generate electrical energy. Among these, the hydrogen supply system converts the hydrogen safely stored in the hydrogen tank from a high-pressure state to a low-pressure state and transfers it to the fuel cell stack, while also increasing the efficiency of the hydrogen supply through a recirculation line.

[0009] A thermal management system is a device that maintains a constant temperature of the fuel cell stack by dissipating heat generated during electrochemical reactions in the fuel cell stack and circulating coolant. The thermal management system affects the output and lifespan of the fuel cell stack.

[0010] The concept of a hydrogen fueled car, which is not a hydrogen electric car, is also a vehicle that uses hydrogen as fuel, but a hydrogen fueled car uses the heat generated by directly burning hydrogen in the engine to drive the electric motor. The method of filling / supplying hydrogen for a hydrogen fueled car is not much different from that of a hydrogen electric car.

[0011] The ultimate goal of the control technique for filling / supplying hydrogen to vehicles that use hydrogen as fuel is to control the temperature (T) and pressure (P) of the compressed hydrogen storage system (CHSS) on the fuel cell side so that it operates within the limit temperature / pressure conditions for safety.

[0012] The hydrogen filling / supply process, control techniques, and protocols for conventional hydrogen electric vehicles were established at a time when wired / wireless communication technologies and control computing techniques were not yet mature, and therefore are unable to fully reflect the recent advances in information and communications technology (ICT).

[0013] Therefore, conventional hydrogen filling / supply technologies for hydrogen electric vehicles are inefficient, slow, and not suitable for large-volume hydrogen filling. Summary of the Invention [Problem to be solved by the invention]

[0014] The present invention has been made in consideration of the above-mentioned conventional problems, and an object of the present invention is to provide a hydrogen filling communication method performed by a dispenser that supplies hydrogen fluid fuel to hydrogen vehicles, and a hydrogen filling communication device installed in the dispenser. [Means for solving the problem]

[0015] In order to achieve the above object, one aspect of the present invention provides a hydrogen fueling communication method performed by a dispenser that supplies hydrogen fluid fuel to a hydrogen vehicle, comprising the steps of: identifying a communication protocol supported by the hydrogen vehicle and a communication protocol supported by the dispenser based on a communication sequence performed by the hydrogen vehicle and information transmitted by the communication sequence; and determining a communication protocol to be performed between the hydrogen vehicle and the dispenser based on the communication protocol supported by the hydrogen vehicle and the communication protocol supported by the dispenser.

[0016] The information conveyed by the communication sequence may include a use classification of communicated data (UCDC) supported by the hydrogen vehicle. The communication protocol includes at least one or more detailed sub-communication protocols, and the at least one or more detailed sub-communication protocols may correspond to one of two-way communication, one-way communication, and no communication. The information transmitted by the communication sequence may include at least one of a communication protocol supported by the hydrogen vehicle and a hydrogen filling protocol for supplying hydrogen fluid fuel to the hydrogen vehicle. The step of determining the communication protocol may include a step of determining a communication protocol candidate based on a communication protocol supported by the hydrogen vehicle and a communication protocol supported by the dispenser, and a step of determining the communication protocol from the communication protocol candidate based on whether the communication protocol candidate corresponds to a hydrogen filling protocol for supplying hydrogen fluid fuel to the hydrogen vehicle. The step of determining the communication protocol may determine the communication protocol based on at least one of interoperability and backward compatibility between the dispenser and the hydrogen vehicle. The hydrogen filling communication method may further include the steps of detecting coupling between the receptacle of the hydrogen vehicle and the nozzle of the dispenser, and receiving information transmitted by the communication sequence from the hydrogen vehicle when the coupling is detected. The hydrogen filling communication method may further include a pairing step of identifying that the hydrogen vehicle indicated by the information transmitted by the communication sequence and the coupled hydrogen vehicle are the same individual. The hydrogen filling communication method may further include the steps of detecting coupling between the receptacle of the hydrogen vehicle and the nozzle of the dispenser, waiting for the communication sequence from the hydrogen vehicle for a certain period of time while the coupling is detected, and identifying a communication protocol supported by the hydrogen vehicle based on whether a communication sequence from the hydrogen vehicle is received during the certain period of time. The step of determining the communication protocol may include a step of initiating communication protocol negotiation when it is determined that two-way communication is supported between the hydrogen vehicle and the dispenser based on information transmitted by the communication sequence, and a step of determining the communication protocol through the communication protocol negotiation.

[0017] In order to achieve the above object, one aspect of the present invention provides a hydrogen fueling communication device mounted on a dispenser that supplies hydrogen fluid fuel to a hydrogen vehicle, the device comprising: a memory that stores at least one instruction; and a processor that executes the at least one instruction. By executing the at least one instruction, the processor identifies the communication protocol supported by the hydrogen vehicle and the communication protocol supported by the dispenser based on the communication sequence performed by the hydrogen vehicle and the information transmitted by the communication sequence, and determines the communication protocol to be performed between the hydrogen vehicle and the dispenser based on the communication protocol supported by the hydrogen vehicle and the communication protocol supported by the dispenser.

[0018] When determining the communication protocol, the processor, by executing the at least one instruction, can determine candidate communication protocols based on the communication protocol supported by the hydrogen vehicle and the communication protocol supported by the dispenser, and can determine the communication protocol from the candidate communication protocols based on whether the candidate communication protocols correspond to a hydrogen filling protocol for supplying hydrogen fluid fuel to the hydrogen vehicle. By executing the at least one or more instructions, the processor may determine a communication protocol based on at least one of interoperability and backward compatibility between the dispenser and the hydrogen vehicle. By executing the at least one instruction, the processor can sense coupling between the receptacle of the hydrogen vehicle and the nozzle of the dispenser, and receive information transmitted by the communication sequence from the hydrogen vehicle when the coupling is detected. By executing the at least one instruction, the processor may perform a pairing process to identify that the hydrogen vehicle indicated by the information transmitted by the communication sequence and the coupled hydrogen vehicle are the same individual. By executing the at least one instruction, the processor can detect coupling between the receptacle of the hydrogen vehicle and the nozzle of the dispenser, wait for the communication sequence of the hydrogen vehicle for a certain period of time while the coupling is detected, and identify the communication protocol supported by the hydrogen vehicle based on whether or not a communication sequence from the hydrogen vehicle is received during the certain period of time. When the processor executes the at least one instruction, if it determines that two-way communication between the hydrogen vehicle and the dispenser is supported based on the information transmitted by the communication sequence, it can start the communication protocol negotiation and determine the communication protocol through the communication protocol negotiation. [Effects of the Invention]

[0019] According to the present invention, safety can be increased, emergency situations and error handling processes can be efficiently improved, and the compatibility and bidirectionality of communication protocols can be ensured, thereby improving the safety and efficiency of the hydrogen filling / supply process.

[0020] In addition, the present invention can provide a safe and efficient hydrogen filling / supply process that provides filling status monitoring, cooperative safety measurement / control, communication security, and user experience, as well as a communication protocol that supports the process. It can also provide communication interoperability between hydrogen vehicles and dispensers, and provide a framework that can divide the entire hydrogen fuel supply process for hydrogen vehicles into sub-problems and solve them (divide and conquer). [Brief explanation of the drawings]

[0021] [Figure 1] 1 is a conceptual diagram illustrating a hydrogen electric vehicle and a dispenser on which a hydrogen filling communication method according to an embodiment of the present invention is performed; [Figure 2] 3 is an operational flowchart showing a hydrogen filling communication method according to one embodiment of the present invention. [Figure 3] 2 is a conceptual diagram illustrating sub-steps performed by a hydrogen filling communication method according to an embodiment of the present invention. [Figure 4] 2 is a conceptual diagram illustrating sub-steps performed by a hydrogen filling communication method according to an embodiment of the present invention. [Figure 5]1 is a conceptual diagram illustrating the interoperability criteria that are the basis of a hydrogen filling communication method according to an embodiment of the present invention. [Figure 6] 1 is a conceptual diagram illustrating the interoperability criteria that are the basis of a hydrogen filling communication method according to an embodiment of the present invention. [Figure 7] 1 is a conceptual diagram illustrating the interoperability criteria that are the basis of a hydrogen filling communication method according to an embodiment of the present invention. [Figure 8] 3 is a conceptual diagram illustrating a communication protocol negotiation process in a hydrogen filling communication method according to an embodiment of the present invention. [Figure 9] 3 is a conceptual diagram illustrating a communication protocol negotiation process in a hydrogen filling communication method according to an embodiment of the present invention. [Figure 10] 3 is a conceptual diagram illustrating a permission / authorization process in a hydrogen filling communication method according to an embodiment of the present invention. [Figure 11] 1 is a conceptual diagram illustrating a safety check-in process in a hydrogen filling communication method according to an embodiment of the present invention. [Figure 12] 2 is a conceptual diagram illustrating a hydrogen filling control and monitor process in a hydrogen filling communication method according to an embodiment of the present invention. [Figure 13] 1 is a conceptual diagram illustrating a safety check-out process in a hydrogen filling communication method according to an embodiment of the present invention. [Figure 14] 3 is a conceptual diagram showing a termination process in a hydrogen filling communication method according to an embodiment of the present invention. [Figure 15] 3 is a conceptual diagram illustrating an emergency handling process in a hydrogen filling communication method according to an embodiment of the present invention. FIG. [Figure 16] 1 is a conceptual block diagram of the internal structure of a generalized computing system installed in a dispenser and / or a hydrogen electric vehicle as a hydrogen filling communication device according to one embodiment of the present invention. DETAILED DESCRIPTION OF THE INVENTION

[0022] In addition to the above features, other features of the present invention will become apparent through the description of the embodiments with reference to the drawings.

[0023] The present invention can be modified in various ways and can have various embodiments, and a specific embodiment will be illustrated in the drawings and described in detail. However, it is not intended to limit the present invention to the specific embodiment, and it should be understood that the present invention includes all modifications, equivalents, and alternatives that fall within the spirit and technical scope of the present invention.

[0024] Terms such as first, second, A, and B are used to describe various components, but the components should not be limited by the terms. Terms are used only to distinguish one component from another. For example, a first component could be termed a second component, and similarly, the second component could be termed a first component, without departing from the scope of the present invention. The term "and / or" includes a combination of multiple associated listed items or any of multiple associated listed items.

[0025] In the embodiments of the present invention, "at least one of A and B" means "at least one of A or B" or "at least one of a combination of one or more of A and B." Also, in the embodiments of the present invention, "one or more of A and B" means "one or more of A or B" or "one or more of a combination of one or more of A and B."

[0026] When a component is said to be "coupled" or "connected" to another component, it should be understood that the component may be directly coupled or connected to the other component, but that there may be other components in between. Conversely, when a component is said to be "directly coupled" or "directly connected" to another component, it should be understood that there are no other components in between.

[0027] The terms used in this specification are merely used to describe specific embodiments and are not intended to limit the present invention. The singular expressions include the plural expressions unless the context clearly dictates otherwise. In this specification, the terms "comprise" or "have" are intended to specify the presence of features, numbers, steps, operations, components, parts, or combinations thereof described in the specification, and should be understood not to preclude the possibility of the presence or addition of one or more other features, numbers, steps, operations, components, parts, or combinations thereof.

[0028] Unless otherwise defined, all terms used herein, including technical and scientific terms, have the same meaning as commonly understood by a person of ordinary skill in the art to which this invention belongs. Terms as defined in commonly used dictionaries should be interpreted to have a meaning consistent with the meaning they have in the context of the relevant art, and should not be interpreted in an idealized or overly formal sense unless expressly defined herein.

[0029] However, even if a technology has been publicly known prior to the filing date of this application, it is included as part of the configuration of the present invention as necessary, and will be described in this specification to the extent that it does not obscure the gist of the present invention. However, when describing the configuration of the present invention, detailed descriptions of technologies that were publicly known prior to the filing date and that would be obvious to a person skilled in the art will be omitted because they may obscure the gist of the present invention.

[0030] For example, IrDA technology can be used for one-way communication, short-range wireless communication technology (Bluetooth (registered trademark), WLAN, UWB) can be used for two-way communication, and wired communication technology for one-way / two-way communication can be used as publicly known technologies prior to the filing of the present invention, and at least some of these publicly known technologies can be applied as elemental technologies necessary to implement the present invention.

[0031] However, the gist of the present invention is not to claim rights to these known techniques, and the content of the known techniques is included as part of the present invention within the scope of the present invention.

[0032] Some terms used in this specification are defined as follows:

[0033] Interoperability refers to the state in which components of a system relative to one another work together to accomplish the intended function of the overall system. Information interoperability refers to the ability of two or more networks, systems, devices, applications, or components to share and easily use information securely and effectively with little or no inconvenience to users.

[0034] Correlation / Association involves the establishment of a relationship between two peer communicating entities.

[0035] Command and control communication refers to the communication between the electric vehicle hydrogen fuel supply system and the hydrogen electric vehicle to exchange information necessary to initiate, control, and terminate the hydrogen fueling process.

[0036] Hydrogen vehicles generally include not only hydrogen electric vehicles or hydrogen fuel cell electric vehicles (FCEVs) that use fuel cells, but also all ICE (Internal Combustion Engine)-based vehicles that use hydrogen as fuel.

[0037] In the following embodiments, a hydrogen electric vehicle or a hydrogen fuel cell vehicle is mainly described as an embodiment, but it will be obvious to those skilled in the art that other embodiments of the present invention include an ICE-based hydrogen vehicle that uses hydrogen as fuel. In the following embodiments, a hydrogen fueling protocol and / or a communication protocol for hydrogen fueling will be disclosed mainly for a hydrogen fuel cell vehicle, but according to other embodiments of the present invention, the hydrogen fueling protocol and / or the communication protocol for hydrogen fueling disclosed in the following embodiments can also be applied to an ICE-based hydrogen vehicle.

[0038] Hydrogen fluid fuels include gaseous hydrogen fuels or liquid hydrogen fuels.

[0039] Hereinafter, specific examples of embodiments of the present invention will be described in detail with reference to the drawings.

[0040] In describing the present invention, the same reference numerals will be used for the same components in the drawings to facilitate overall understanding, and duplicate descriptions of the same components will be omitted.

[0041] Hereinafter, the present invention will be described in detail with reference to the embodiment shown in FIGS.

[0042] FIG. 1 is a conceptual diagram showing a hydrogen electric vehicle (FCEV) 200 and a dispenser 100 in which a hydrogen filling communication method according to an embodiment of the present invention is performed.

[0043] The hydrogen fueling process between the hydrogen electric vehicle 200 and the dispenser 100 is understood to be a process in which the dispenser 100 controls the pressure and temperature of gasified gaseous hydrogen fuel or liquefied liquid hydrogen fuel and supplies it to the hydrogen electric vehicle 200.

[0044] The SAE J2601 standard, published in May 2020, proposes Fueling Protocols for Light Duty Gaseous Hydrogen Surface Vehicles, and proposes one-directional communication from the hydrogen electric vehicle 200 to the dispenser 100 for light duty and medium duty vehicles.

[0045] The counterpart of the hydrogen electric vehicle 200 that is connected to the nozzle of the dispenser 100 is called a receptacle, and it is disclosed that the hydrogen electric vehicle 200 notifies the dispenser 100 that the nozzle and receptacle have been connected using a one-way communication means such as IrDA.

[0046] The hydrogen electric vehicle 200 may not even have a one-way communication means. In this case, the dispenser 100 is required to control the process of supplying hydrogen fuel to the hydrogen electric vehicle 200 without a communication process.

[0047] With the development of communication technology, the possibility of two-way communication between the hydrogen electric vehicle 200 and the dispenser 100 has been proposed, and the two-way communication can be realized using various known wired or wireless communication means. In this case, it is required that the level of data to be transmitted between the hydrogen electric vehicle 200 and the dispenser 100 be agreed upon in advance.

[0048] When hydrogen fuel is supplied, accurate measurement of the demand fuel supplied, as well as safety and reliability of the hydrogen fueling process, and safety control and management, including stopping / restarting the hydrogen fueling process due to unexpected variables, are carried out more efficiently through two-way communication.

[0049] The hydrogen electric vehicle 200 and the dispenser 100 may be required to perform a hydrogen refueling process without prior information sharing between them. Therefore, before performing the hydrogen refueling process, it is very important to check the compatible types of communication protocols and hydrogen refueling protocols between the hydrogen electric vehicle 200 and the dispenser 100 to ensure compatibility and interoperability.

[0050] According to one embodiment of the present invention, a use case framework for hydrogen fueling communication for a hydrogen electric vehicle 200 is proposed.

[0051] The framework according to an embodiment of the present invention provides interoperability and compatibility at all steps of the hydrogen fueling process for the hydrogen electric vehicle 200.

[0052] A hydrogen filling communication method according to an embodiment of the present invention divides an overall process into sub-problems and solves them (divide & conquer).

[0053] A hydrogen filling communication method according to one embodiment of the present invention identifies a separate use case to solve each sub-problem.

[0054] FIG. 2 is an operational flowchart showing a hydrogen filling communication method according to one embodiment of the present invention.

[0055] Referring to FIG. 2, a hydrogen fueling communication method performed by a dispenser 100 that supplies hydrogen fluid fuel to a hydrogen electric vehicle 200 (FCEV: Fuel Cell Electric Vehicle) according to one embodiment of the present invention includes a step 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 a step 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).

[0056] The information conveyed by the communication sequence includes the use classification of communicated data (UCDC) supported by the hydrogen electric vehicle 200 .

[0057] A communication protocol includes at least one or more detailed sub-communication protocols, and at least one or more detailed sub-communication protocols correspond to one of bi-directional communication, one-directional communication, and no communication.

[0058] The information conveyed by the communication sequence includes at least one of a communication protocol supported by the hydrogen electric vehicle 200 and a hydrogen filling protocol for supplying hydrogen fluid fuel to the hydrogen electric vehicle 200 .

[0059] The step of determining a communication protocol (S330) includes a step of determining a communication protocol candidate based on the communication protocol supported by the hydrogen electric vehicle 200 and the communication protocol supported by the dispenser 100, and a step of determining a communication protocol from the communication protocol candidate based on whether the communication protocol candidate corresponds to a hydrogen filling protocol for supplying hydrogen fluid fuel to the hydrogen electric vehicle 200.

[0060] Some hydrogen filling protocols are performed on a non-communication basis. Some hydrogen filling protocols require unidirectional IrDA. Some hydrogen filling protocols require bidirectional communication. Some hydrogen filling protocols require both bidirectional communication and unidirectional IrDA.

[0061] To execute a certain hydrogen filling protocol, a predetermined UDC level or a higher UDC level is required. At least one hydrogen filling protocol is proposed based on the type of hydrogen electric vehicle 200 and the type of dispenser 100. The proposed hydrogen filling protocols may be proposed with different priorities. The communication protocol and hydrogen filling protocol between the hydrogen electric vehicle 200 and the dispenser 100 are ultimately determined based on whether the communication protocol required by the hydrogen filling protocol is supported by the hydrogen electric vehicle 200 and / or the dispenser 100, taking into account the priority of the proposed hydrogen filling protocol.

[0062] The step of determining a communication protocol (S330) determines the communication protocol based on interoperability and / or UCDC backward compatibility between the dispenser 100 and the hydrogen electric vehicle 200.

[0063] The hydrogen filling communication method according to one embodiment of the present invention further includes the steps of detecting a coupling between a receptacle of the hydrogen electric vehicle 200 and a nozzle of the dispenser 100, and receiving information transmitted by a communication sequence from the hydrogen electric vehicle 200 when the coupling is detected.

[0064] The hydrogen filling communication method according to one embodiment of the present invention further includes a pairing step of identifying that the hydrogen electric vehicle 200 indicated by the information transmitted by the communication sequence and the coupled hydrogen electric vehicle 200 are the same individual.

[0065] A hydrogen filling communication method according to one embodiment of the present invention further includes the steps of detecting coupling between a receptacle of the hydrogen electric vehicle 200 and a nozzle of the dispenser 100, waiting for a communication sequence from the hydrogen electric vehicle 200 for a certain period of time while the coupling is detected, and identifying a communication protocol that the hydrogen electric vehicle 200 can support based on whether a communication sequence from the hydrogen electric vehicle 200 is received for the certain period of time.

[0066] At this time, if the communication sequence of the hydrogen electric vehicle 200 is not detected or received within a certain time period, the dispenser 100 assumes that the hydrogen electric vehicle 200 does not support a communication means and performs the hydrogen filling process assuming no communication.

[0067] The hydrogen filling communication method according to an embodiment of the present invention further includes determining hydrogen filling parameters based on the determined hydrogen filling protocol, and supplying the hydrogen fluid fuel based on the hydrogen filling protocol and the hydrogen filling parameters.

[0068] The step of determining a communication protocol (S330) includes a step of starting a communication protocol negotiation if it is determined that two-way communication is supported between the hydrogen electric vehicle 200 and the dispenser 100 based on the information transmitted by the communication sequence, and a step of determining a communication protocol through the communication protocol negotiation.

[0069] The step of determining the hydrogen filling protocol includes the steps of initiating a hydrogen filling protocol negotiation between the hydrogen electric vehicle 200 and the dispenser 100, and determining the hydrogen filling protocol through the hydrogen filling protocol negotiation.

[0070] A hydrogen filling communication method according to one embodiment of the present invention further includes a step of initiating hydrogen filling parameter negotiation between the hydrogen electric vehicle 200 and the dispenser 100 based on a hydrogen filling protocol, and a step of determining hydrogen filling parameters through the hydrogen filling parameter negotiation.

[0071] 3 and 4 are conceptual diagrams illustrating the sub-steps performed by a hydrogen filling communication method according to one embodiment of the present invention.

[0072] FIG. 3 shows sub-steps (S400 to S482) of the hydrogen filling communication method according to the first embodiment of the present invention.

[0073] In the embodiment of FIG. 3, the UC0: Communication Interoperability stage (S400) precedes all remaining sub-stages (S420-S482).

[0074] FIG. 4 shows sub-steps (S500 to S582) of the hydrogen filling communication method according to the second embodiment of the present invention.

[0075] In the embodiment of FIG. 4, the UC1: Discovery and pairing phase (S500) corresponds to the UC0: Communication interoperability phase (S400) of FIG.

[0076] 3 and 4, the UC0: Communication Interoperability Step (S400) and the UC1: Discovery and Pairing Step (S500) of FIG. 4 include checks, identification, determination, verification, and / or selection processes to allow interoperability between different implementations based on multiple technologies. Implementations based on different standards, such as SAE and ISO standards, are considered, and advanced communication technologies (AC) such as no-com, unidirectional IrDA, and other wired / wireless communication are considered. Examples of AC primarily consider two-way communication technologies, including wired and wireless communication technologies.

[0077] In the embodiment of Fig. 4, the UC1: Discovery and Pairing step (S500) is shown as preceding all remaining substeps, like the UC0: Communication Interoperability step (S400) of Fig. 3, but in other embodiments of the present invention, the UC0: Communication Interoperability step (S400) is performed throughout all remaining substeps. That is, when it is required to determine communication interoperability and / or compatibility at any of the substeps, the UC0: Communication Interoperability step (S400) is executed.

[0078] The UC3: Communication Protocol Negotiation step (S420, S520) in Figures 3 and 4 is a process for determining the communication protocol (type and version) between devices that support different sets of protocols. The UCDC level is also subject to negotiation, and if there are multiple common protocols, the preferred protocol is selected.

[0079] 3: UC4: Authorization step (S422) is a process that allows each user to be authorized / authorized for hydrogen fueling without communication interference. The dispenser 100 waits for the authorization / authorization result before starting hydrogen fueling.

[0080] The UC5: Parameter Exchange step (S430) in Figure 3 corresponds to the UC4: Fueling Protocol Negotiation step (S530) and the UC5: Fueling Parameter Negotiation step (S532) in Figure 4. These processes exchange protocols and parameters required for safe and efficient hydrogen fueling between the hydrogen electric vehicle 200 and the dispenser 100. For example, physical limitations, hydrogen fueling methods, hydrogen fueling goals, etc. are exchanged and are the subject of negotiation.

[0081] UC6: Safety Check In step (S440, S540) in Figures 3 and 4 is a process to ensure safe hydrogen fueling before starting the hydrogen fueling procedure. An example of a required process at this time is a leakage check process.

[0082] UC7: Fueling Control & Monitoring steps (S450, S550) in Figures 3 and 4 is a process of monitoring and controlling the entire fueling procedure to ensure it is carried out safely and efficiently.

[0083] 3 and 4, UC8: Safety Check Out step (S460, S560) is a process to ensure the safety of the process of unplugging the nozzle and receptacle after the hydrogen fueling procedure is completed. An example of a process required at this time is checking for problems at the nozzle.

[0084] UC9: Termination step (S470, S570) in Figures 3 and 4 is a process of wrapping up the hydrogen fueling process. For example, it includes exchanging fueling results. The fueling results include the amount of hydrogen supplied.

[0085] In the UC11: Security step (S482) of FIG. 3 or the UC2: Communication Security step (S510) of FIG. 4, a method for protecting communication processes and data is proposed to protect user privacy and ensure a safe and reliable hydrogen fueling experience.

[0086] The security process is carried out in the order of two-way authentication, key exchange, and secure channel establishment when two-way communication is supported between the hydrogen electric vehicle 200 and the dispenser 100. Messages are exchanged while maintaining integrity, authenticity, and confidentiality so as not to be exposed to the outside.

[0087] A method for handling emergency events to efficiently prevent any safety incidents is proposed in the UC10: Emergency Handling step (S480) of Figure 3, the UC10: Error Handling step (S580) of Figure 4, or the UC11: Emergency Handling step (S582) of Figure 4. Various emergency situations can be considered, such as when the dispenser 100 detects unstable temperature or pressure conditions during hydrogen refueling and attempts to stop, or when the hydrogen electric vehicle 200 urgently requests that hydrogen refueling be stopped.

[0088] UC1: Discovery and Pairing step (S500) of FIG. 4 further includes a process in which, after the nozzle of the dispenser 100 is connected to the receptacle of the hydrogen electric vehicle 200, both sides discover and identify each other through communication.

[0089] For example, when the hydrogen electric vehicle 200 V1 determines that the dispenser 100 connected to it is DIS2 and transmits a message such as "Hello DIS2," if the dispenser 100 is correct, it responds with "Hello V1," thereby completing the pairing process. That is, when the hydrogen electric vehicle 200 V1 has dispensers 100 (DIS1, DIS2) located nearby, it accurately identifies the dispenser 100 to which it is physically connected and prepares for hydrogen filling.

[0090] The pairing process is carried out by exchanging information such as a pairing ID.

[0091] FIG. 5 is a conceptual diagram illustrating the interoperability criteria that are the basis of the hydrogen filling communication method according to one embodiment of the present invention.

[0092] Referring to FIG. 5, four types are shown by way of example.

[0093] Devices that support the Standard I-based protocol are compatible with each other.

[0094] Devices that support the Standard II-based protocol are compatible with each other. The Standard II-based protocol supports two-way communication.

[0095] It is one of the objects of the present invention to ensure compatibility between devices supporting a Standard I based protocol and devices supporting a Standard II based protocol that supports two-way communication.

[0096] For this purpose, the present invention proposes the following four types as criteria for determining interoperability.

[0097] Type 1: No communication, but Standard I based no-comm method is implemented.

[0098] Type 2: One-way IrDA communication is provided.

[0099] Type 3: Only Advanced Communication (AC) is implemented.

[0100] Type 4: Both bidirectional AC and unidirectional IrDA are implemented.

[0101] A method to maximize interoperability is proposed for these four types. For example, when a Type 4 (AC & IrDA) device meets a Type 2 (IrDA) device, the Type 4 device recognizes that AC is not available, and communication between them is limited to the unidirectional IrDA method supported by the Type 2 device.

[0102] For example, when a Type 3 (AC for UCDC2) device meets a Type 3 (AC for UCDC3 / IrDA) device, no common protocol is identified, and only non-communication is available between the two devices.

[0103] When a Type 4 (ACv1 / IrDA) device meets a Type 4 (ACv2 / IrDA) device, the communication between the two devices is limited to the unidirectional IrDA method due to the AC protocol version mismatch.

[0104] Referring again to FIG. 5, Cases 1, 2, and 3 show cases where different devices are restricted to non-communication by the other device of Type 1 - Non-communication.

[0105] Case 1 shows a case where a Type 2 device meets a Type 1 device and falls back to Type 1. In another embodiment of the present invention, although not shown, when a Type 2 device meets a Type 3 device, similar to Case 1, the device falls back to Type 1.

[0106] Case 2 shows the case where a Type 3 device meets a Type 1 device and falls back to Type 1. When a Type 3 device meets a Type 2 device, it also falls back to Type 1, just like Case 2.

[0107] In Case 4, when a Type 4 device meets a Type 2 device, the communication method is limited to the unidirectional IrDA method of the Type 2 device.

[0108] In case 5, a mutually supported AC is adopted as the communication means. At this time, the unidirectional IrDA means of the Type 4 device is not available.

[0109] The following priority is set between these different types: If AC type is supportable, it is preferred over unidirectional IrDA, which is preferred over non-communication. However, when a Type 2 device meets a Type 3 device, they fall back to Type 1 if no common communication method is found.

[0110] When two identical Type 4 devices meet, they select a common protocol, and if no common protocol exists, they fall back to Type 3 or Type 2.

[0111] When two identical Type 3 devices meet, they choose a common protocol, and if no common protocol exists, they fall back to Type 1.

[0112] In the physical layer for such hydrogen fueling communication, in addition to the currently used one-way IrDA technology, other wired communication technologies such as serial communication, PLC (e.g., ISO 15118 for conductive), and Ethernet (registered trademark) (e.g., new candidate for ISO 15118) are used.

[0113] AC is a wired / wireless two-way communication technology, and wireless communication technology includes various communication means such as 5G, WLAN, BLE, ETH, UWB, RFID, NFC, etc. Known protocols such as TCP / IP can be used as protocols for such communication means.

[0114] For example, communication means that are considered to be wireless communication include Bluetooth (registered trademark), WLAN / Wi-Fi, UWB (IEC limited consideration for ACD), and NFC.

[0115] Examples of wired communications considered in AC include two-way IrDA, serial communications, and vehicular Ethernet (registered trademark).

[0116] Hybrid communication methods are also contemplated.

[0117] IrDA+Wired: Hardware changes on the nozzle and receptacle side are required.

[0118] IrDA+Wireless: No changes are required to the nozzle or receptacle hardware, but an additional communication method is required.

[0119] FIG. 6 is a conceptual diagram illustrating the interoperability criteria that are the basis of the hydrogen filling communication method according to one embodiment of the present invention.

[0120] FIG. 6 illustrates the interoperability criteria considered in FIG. 5 in the form of an interoperability matrix.

[0121] When the hydrogen electric vehicle 200 and the dispenser 100 recognize each other and identify that they are identical implementations, a common protocol is applied, as indicated by the diagonal portion of the matrix.

[0122] When a non-communication device on one side meets a unidirectional IrDA communication device on the other side, the communication method on both sides falls back to a no communication method that is commonly covered by both sides.

[0123] If both devices support bidirectional communication, bidirectional communication is applied regardless of whether they support unidirectional IrDA or not. However, compatibility based on UCDC level is additionally considered.

[0124] When a device supporting bidirectional communication on one side meets a device supporting non-communication on the other side, the communication means on both sides fall back to non-communication.

[0125] When a bidirectional communication device on one side meets a unidirectional IrDA device on the other side, whether the unidirectional IrDA means is selected or not is determined depending on whether the bidirectional communication device can support the unidirectional IrDA means.

[0126] If a device that supports two-way communication does not support one-way IrDA means, both communication means fall back to non-communication.

[0127] The interoperability determination in Figures 5 and 6 requires that a Standard II-based device that supports two-way communication must support the Standard I-based fueling method, regardless of whether it supports one-way IrDA means (Requirement 1).

[0128] A Standard II-based device that supports two-way communication is required to discover if its counterpart supports Standard II (Requirement 2).

[0129] If the hydrogen electric vehicle 200 or dispenser 100 does not support Standard II, the Standard II-based device is required to fall back to a compatible Standard I-based method (Requirement 3).

[0130] FIG. 7 is a conceptual diagram illustrating the interoperability criteria that are the basis of the hydrogen filling communication method according to one embodiment of the present invention.

[0131] 7 shows the classification of communication and data exchange means for process control and safety functions according to UCDC levels. The UCDC levels are backward compatible. In other embodiments of the present invention, backward compatibility is valid for non-communication (Non Comm), uni-directional communication (Uni-directional Comm), bi-directional communication (Bi-directional Comm), and combinations thereof, regardless of UCDC.

[0132] In the case of [UCDC-0], data is not communicated and even if data is communicated, it is not used for the hydrogen fueling protocol or associated safety functions.

[0133] In the case of [UCDC-1], the data communicated by communication is not used for safety functions. The static data communicated by communication is used to improve the performance of the hydrogen fueling protocol. The dynamic data communicated by communication is used to reduce the risk against process deviations during the hydrogen fueling protocol.

[0134] In the case of [UCDC-2], all data used in [UCDC-1] is available, and static data transmitted by communication is used for safety functions.

[0135] In the case of [UCDC-3], all kinds of data (static and dynamic) are used for dynamic control of protocols or safety functions.

[0136] It is assumed that all devices are capable of supporting UCDC-0.

[0137] A Standard II based device that supports bidirectional communication must support the lower UCDC level of the two UCDC levels (Requirement 4).

[0138] Between Standard II-based devices that support different UCDC levels, data of the highest UCDC level supported by both devices is used (Requirement 5).

[0139] When the WLAN communication technology is used in Advanced Comm. (AC), the connection compatibility check process is performed, for example, as follows.

[0140] Scenario 1

[0141] Step 0: The dispenser 100 is prepared for the AP (wireless router).

[0142] Beaconing hydrogen fueling stations for hydrogen electric vehicles 200 and supporting methods within the VSE.

[0143] Step 1: A hydrogen electric vehicle 200 approaching a dispenser 100 scans and finds the dispenser 100. Then, a two-way WLAN link is established.

[0144] Scenario 2

[0145] The dispenser 100 does not support two-way WLAN but supports one-way IrDA (Type 2).

[0146] If the hydrogen electric vehicle 200 approaching the dispenser 100 corresponds to Type 4, it scans the dispenser 100 but cannot find it.

[0147] When the nozzle and receptacle are plugged together, communication begins via unidirectional IrDA (Type 2).

[0148] Scenario 3

[0149] The dispenser 100 supports bidirectional WLAN and unidirectional IrDA (Type 4).

[0150] The hydrogen electric vehicle 200 is a Type 2 vehicle and is parked in front of the dispenser 100 .

[0151] The dispenser 100 cannot discover the WLAN client.

[0152] When the nozzle and receptacle are plugged together, communication begins via unidirectional IrDA (Type 2).

[0153] When the UCDC level is 1 or higher, the data shared through communication is as follows:

[0154] <<General communication data transmitted from the dispenser 100 to the hydrogen electric vehicle 200>>

[0155] Fuel delivery pressure Fuel delivery temperature Hydrogen delivery flow rate Maximum fuel delivery pressure Minimum fuel delivery temperature Maximum fuel delivery temperature Maximum delivery flow rate

[0156] <<General communication data transmitted from the hydrogen electric vehicle 200 to the dispenser 100>>

[0157] Receptacle type (receptacle type: RT) Tank volume (TV) Tank pressure (measured pressure: MP) Tank temperature (measured temperature: MT) working pressure maximum working pressure maximum working temperature

[0158] Prior to this, the hydrogen electric vehicle 200 and the dispenser 100 exchange parameters for hydrogen fueling in the UC5: Parameter Exchange (S430) process in Figure 3. The exchanged parameters include hydrogen fueling method parameters, physical characteristics / limitations, hydrogen fueling goals, and ambient parameters.

[0159] <Hydrogen filling parameters transmitted from the dispenser 100 to the hydrogen electric vehicle 200>

[0160] Physical Parameters: Maximum Fuel Delivery Pressure, Maximum Fuel Delivery Temp, Minimum Fuel Delivery Temp, Maximum Fuel Delivery Flow Rate, etc. Protocol specific: Fueling Protocol Category Auxiliary Parameters: Ambient temperature Fueling Target params: Target SOC (State of Charge), Target duration (expected), Target final tank pressure, Target APR (average fueling rate), Target final tank temperature Monitoring parameters: Current Fuel Delivery temp

[0161] <Hydrogen filling parameters transmitted from the hydrogen electric vehicle 200 to the dispenser 100>

[0162] Physical Params: Receptacle type (H35, H70, ...), Maximum allowed tank (CHSS) pressure, Maximum allowed tank (CHSS) temperature, Maximum allowed flow, FCEV Tank (CHSS) volume Monitoring parameters: Current Tank (CHSS) temperature, Current Tank (CHSS) pressure

[0163] Generally, with one-way / two-way communication, it is difficult to be sure that a message was transmitted / received correctly. With both one-way and two-way communication, it is difficult to know whether the information contained in the message was used by the other party. Also, with one-way communication, it is difficult to provide security functions.

[0164] Nevertheless, the dispenser 100 needs to notify the hydrogen electric vehicle 200 of error and emergency events, and to signal the start and end of the hydrogen filling process.

[0165] Taking this into consideration, the present invention identifies and uses an interoperable protocol between the dispenser 100 and the hydrogen electric vehicle 200 in advance, thereby providing safety, security, and control functions for the hydrogen filling process at a level consistent with the compatible protocol.

[0166] Any mission-critical system requires secure communications. According to the present invention, when necessary data is transmitted, appropriate security functions can be added without exposing unnecessary data to the outside, taking into consideration the level of compatible protocols.

[0167] According to an embodiment of the present invention, it is possible to enhance safety and efficiently improve emergency situations and error handling processes.

[0168] According to one embodiment of the present invention, the safety and efficiency of the hydrogen filling / supply process can be improved by ensuring compatibility and bidirectionality of the communication protocol. Bidirectional communication can further improve safety and efficiency by providing a protocol for requesting and responding to information.

[0169] According to one embodiment of the present invention, a safe and efficient hydrogen filling / supply process and a communication protocol that supports the process can be provided, which provides filling status monitoring, cooperative safety measurement / control, communication security, and user experience. Communication security can ensure the safety of mission-critical systems.

[0170] According to one embodiment of the present invention, communication interoperability between a hydrogen electric vehicle (FCEV) 200 and a dispenser 100 can be provided, and a framework for dividing the entire process of FECV hydrogen fuel supply into sub-problems and solving them (divide and conquer) can be provided.

[0171] In one embodiment of the present invention, excellent compatibility and stability can be ensured through a layered approach with common elements related to physical, delivery, and encoding.

[0172] 8 and 9 are conceptual diagrams illustrating a communication protocol negotiation process in a hydrogen filling communication method according to an embodiment of the present invention.

[0173] 8, the hydrogen electric vehicle 200 transmits compatible communication protocol information, hydrogen filling protocol information, and UCDC level to the dispenser 100. At this time, the hydrogen electric vehicle 200 transmits compatible protocol and UCDC level information along with priority information.

[0174] The dispenser 100 responds by selecting and / or determining a compatible protocol and UCDC level based on the information received from the hydrogen electric vehicle 200. At this time, the dispenser 100 determines if a fallback is necessary, and finally determines the protocol taking into consideration the priority of the hydrogen electric vehicle 200.

[0175] 9, the hydrogen electric vehicle 200 transmits a negotiation request message to the dispenser 100 to request protocol negotiation. At this time, the dispenser 100 provides the hydrogen electric vehicle 200 with protocols it can support. The hydrogen electric vehicle 200 selects and notifies the most suitable protocol from the protocols provided by the dispenser 100. Through this process, protocol negotiation between the two entities is performed.

[0176] Examples of protocols and UCDC levels considered in Figures 8 and 9 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, ISO 19885-3-2023-UCDC-3, etc.

[0177] 10 is a conceptual diagram illustrating the authorization process of the hydrogen filling communication method according to an embodiment of the present invention. The process of FIG. 10 is a process for checking whether the hydrogen electric vehicle 200 is authorized / authorized for filling.

[0178] Referring to FIG. 10, the hydrogen electric vehicle 200 requests a permit / authorization procedure from the dispenser 100 .

[0179] The dispenser 100 responds by providing the hydrogen electric vehicle 200 with a communication means or payment means for authorization / license.

[0180] The hydrogen electric vehicle 200 selects a permission / authorization means to request permission / authorization (e.g., RFID).

[0181] After that, permission / authorization is given through communication between both sides, and the permission / authorization process is completed after confirmation from both sides.

[0182] FIG. 11 is a conceptual diagram illustrating a safety check-in process in a hydrogen filling communication method according to an embodiment of the present invention.

[0183] FIG. 11 shows the safety checkup process before hydrogen fueling begins.

[0184] A check is made to see if the nozzle-receptacle is locked.

[0185] The presence or absence of leaks is checked.

[0186] The last minute status is checked.

[0187] In FIG. 11, the safety check-in process is also performed by a communication sequence initiated by the hydrogen electric vehicle 200.

[0188] At this time, the dispenser 100 reports to the hydrogen electric vehicle 200 information such as coupler lock status, leak check status, and estimated FCEV tank volume.

[0189] The hydrogen electric vehicle 200 reports the immobilization status to the dispenser 100 .

[0190] FIG. 12 is a conceptual diagram illustrating a hydrogen filling control and monitor process in a hydrogen filling communication method according to an embodiment of the present invention.

[0191] FIG. 12 relates to a periodic or continuous information exchange process for hydrogen fueling status.

[0192] The hydrogen electric vehicle 200 shares the current temperature, pressure, etc. The dispenser 100 shares the injection force, hydrogen filling plan ahead, etc. The dispenser 100 also shares status information such as start, stop, ramping up, ramping down, etc.

[0193] Sometimes information is shared such as start, stop, slow down, speed up, target pressure, pause, etc.

[0194] The information reported from the dispenser 100 to the hydrogen electric vehicle 200 is as follows:

[0195] Status I: Not Ready, Ready, Fueling, Paused, Terminated, Emergency Stopped, Current Ambient Temperature, Current PRR (pressure ramp rate (Mbar / min)), Hydrogen Delivery Fuel Flow Rate (g / sec), Current Fuel Delivery Temperature (same as pre-cooling temp), Current Fuel Delivery Pressure Status II: Using Top-off (true / false), Using Cold dispenser (true / false), Using Fallback taken (true / false), Fueling Stopped Reason (normal, error code), Current Fueled Hydrogen Amount (g) Target param update: Target final tank pressure, Target final tank temperature, Target fueling APR, Target SOC, Current SOC, Estimated Remaining Duration

[0196] The information reported from the hydrogen electric vehicle 200 to the dispenser 100 is as follows:

[0197] Control: Action: Start, Pause, Resume, Terminate Reporting: Current Tank Temperature, Current Tank Pressure

[0198] In FIG. 12, the control and monitoring process is performed by a communication sequence initiated by the hydrogen electric vehicle 200.

[0199] FIG. 13 is a conceptual diagram illustrating a safety check-out process in a hydrogen filling communication method according to an embodiment of the present invention.

[0200] Referring to FIG. 13, information such as whether the coupler is iced or not stuck, whether the nozzle is closed, and whether the coupler is unlocked is checked and shared with each other.

[0201] The hydrogen electric vehicle 200 periodically reports that the coupler check status is good, and the dispenser 100 ends the status when the filling process is complete and continues the termination process.

[0202] At this time, the information exchanged between them is the coupler unlock status, coupler problems (icing, stuck), etc. If the nozzle-receptacle cannot be separated, it must be reported as a priority because it will cause problems in the progress of subsequent processes.

[0203] FIG. 14 is a conceptual diagram showing a termination process in the hydrogen filling communication method according to an embodiment of the present invention.

[0204] 14, the hydrogen electric vehicle 200 requests information on how much hydrogen has been filled from the dispenser 100. The dispenser 100 responds with the amount of hydrogen filled to the hydrogen electric vehicle 200. After that, the hydrogen electric vehicle 200 goes through a confirmation process, and the termination process is completed.

[0205] The dispenser 100 transmits the following information to the hydrogen electric vehicle 200:

[0206] Final SOC, Final Average Fueling Rate (APRR), Final Measured Tank Pressure, Actual Fueling Duration, Actual Fueled Hydrogen Amount

[0207] The hydrogen electric vehicle 200 transmits the following information to the dispenser 100:

[0208] Current Tank Temperature, Current Tank Pressure

[0209] FIG. 15 is a conceptual diagram showing an emergency handling process in a hydrogen filling communication method according to an embodiment of the present invention.

[0210] Referring to FIG. 15, the hydrogen-electric vehicle 200 may request an action from the dispenser 100 at any time in connection with a safety event.

[0211] For example, if the hydrogen electric vehicle 200 requests to stop / halt, pause, or slow down due to high pressure, the dispenser 100 is required to respond to the request.

[0212] In the above embodiment, the hydrogen electric vehicle 200 is mainly shown as initiating the initial communication sequence, but it will be obvious to those skilled in the art that in other embodiments of the present invention, either the hydrogen electric vehicle 200 and / or the dispenser 100 can initiate the initial communication sequence.

[0213] FIG. 16 is a conceptual block diagram of the internal structure of a generalized computing system that may be installed in a dispenser 100 and / or an FCEV as a hydrogen filling communication device according to one embodiment of the present invention.

[0214] In the embodiments of FIGS. 1 to 15, although not shown in the drawings, a processor and a memory are electronically connected to each component, and the operation of each component is controlled or managed by the processor.

[0215] At least some of the steps of a filling communication method for filling an electric vehicle according to one embodiment of the present invention are performed by the computing system 1000 of FIG.

[0216] Referring to FIG. 16, a computing system 1000 according to one embodiment of the present invention includes a processor 1100, a memory 1200, a communication interface 1300, a storage device 1400, an input interface 1500, an output interface 1600, and a bus 1700.

[0217] A computing system 1000 according to an embodiment of the present invention includes at least one processor 1100 and a memory 1200 that stores instructions that instruct the at least one processor 1100 to perform at least one step. At least some steps of a method according to an embodiment of the present invention are performed by the at least one processor 1100 loading and executing instructions from the memory 1200.

[0218] The processor 1100 may be a central processing unit (CPU), a graphics processing unit (GPU), or a dedicated processor on which methods according to embodiments of the present invention are performed.

[0219] Each of the memory 1200 and the storage device 1400 is composed of at least one of a volatile storage medium and a non-volatile storage medium, for example, the memory 1200 is composed of at least one of a read only memory (ROM) and a random access memory (RAM).

[0220] The computing system 1000 also includes a communication interface 1300 for effecting communications over a wireless network.

[0221] The computing system 1000 further includes a storage device 1400, an input interface 1500, an output interface 1600, and the like.

[0222] Furthermore, the components included in the computing system 1000 are connected to each other by a bus 1700 to perform communication.

[0223] Devices that include the processor 1100 according to one embodiment of the present invention include, for example, a communications-enabled desktop computer, a laptop computer, a notebook computer, a smartphone, 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, a personal digital assistant (PDA), and the like.

[0224] The hydrogen filling communication device according to one embodiment of the present invention is a device that is installed in a hydrogen electric vehicle (FCEV, 200) or a dispenser 100 to perform communication between the hydrogen electric vehicle 200 and the dispenser 100, and includes a processor 1100 that receives and executes at least one command from a memory 1200.

[0225] The processor 1100 executes at least one instruction to identify the communication protocol supported by the hydrogen electric vehicle 200 and the communication protocol supported by the dispenser 100 based on the communication sequence performed by the hydrogen electric vehicle 200 and the information transmitted by the communication sequence, and determines the 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.

[0226] The processor 1100 executes at least one instruction to determine a hydrogen filling protocol for supplying hydrogen fluid fuel to the hydrogen electric vehicle 200 based on information transmitted by the communication sequence, and supplies hydrogen fluid fuel to the hydrogen electric vehicle 200 based on the determined hydrogen filling protocol.

[0227] When determining a communication protocol, the processor 1100 executes at least one instruction to determine candidate communication protocols based on the communication protocols supported by the hydrogen electric vehicle 200 and the communication protocols supported by the dispenser 100, and determines a communication protocol from the candidate communication protocols based on whether the candidate communication protocols correspond to a hydrogen filling protocol for supplying hydrogen fluid fuel to the hydrogen electric vehicle 200.

[0228] The processor 1100 executes at least one instruction to determine a communication protocol based on interoperability and / or UCDC backward compatibility between the dispenser 100 and the hydrogen electric vehicle 200.

[0229] The processor 1100 executes at least one instruction to detect coupling between the receptacle of the hydrogen electric vehicle 200 and the nozzle of the dispenser 100, and receives information transmitted by a communication sequence from the hydrogen electric vehicle 200 when the coupling is detected.

[0230] The processor 1100 executes at least one instruction to perform a pairing process to identify that the hydrogen electric vehicle 200 indicated by the information transmitted by the communication sequence and the coupled hydrogen electric vehicle 200 are the same individual.

[0231] The processor 1100 executes at least one instruction to detect coupling between the receptacle of the hydrogen electric vehicle 200 and the nozzle of the dispenser 100, wait for a communication sequence from the hydrogen electric vehicle 200 for a certain period of time while the coupling is detected, and identify the communication protocol supported by the hydrogen electric vehicle 200 based on whether a communication sequence from the hydrogen electric vehicle 200 is received for the certain period of time.

[0232] The processor 1100 executes at least one or more instructions to determine hydrogen filling parameters based on the determined hydrogen filling protocol, and supplies the hydrogen fluid fuel based on the hydrogen filling protocol and the hydrogen filling parameters when supplying the hydrogen fluid fuel.

[0233] When determining a communication protocol by executing at least one instruction, the processor 1100 starts communication protocol negotiation and determines a communication protocol through communication protocol negotiation if it determines that two-way communication is supported between the hydrogen electric vehicle 200 and the dispenser 100 based on information transmitted by the communication sequence.

[0234] When determining a hydrogen filling protocol, the processor 1100 executes at least one instruction to initiate a hydrogen filling protocol negotiation between the hydrogen electric vehicle 200 and the dispenser 100, and determines the hydrogen filling protocol through the hydrogen filling protocol negotiation.

[0235] The processor 1100 executes at least one instruction to initiate hydrogen filling parameter negotiation between the hydrogen electric vehicle 200 and the dispenser 100 based on a hydrogen filling protocol, and to determine hydrogen filling parameters through the hydrogen filling parameter negotiation.

[0236] The operations of the methods according to the embodiments of the present invention may be embodied as a computer-readable program or code stored in a computer-readable recording medium. The computer-readable recording medium includes all types of storage devices that store information readable by a computer system. The computer-readable recording medium may also be distributed among computer systems connected to a network, so that the computer-readable program or code may be stored and executed in a distributed manner.

[0237] Additionally, computer-readable recording media include hardware devices specially configured to store and execute program instructions, such as ROM, RAM, flash memory, etc. Program instructions include not only machine language code, such as produced by a compiler, but also high-level language code that is executed by a computer using an interpreter, etc.

[0238] Although some aspects of the present invention have been described in the context of an apparatus, they may also be presented as corresponding method descriptions, where blocks or apparatus correspond to method steps or features of method steps. Similarly, aspects described in the context of a method may also be presented as corresponding blocks or items or features of the apparatus. Some or all of the method steps may be performed by (or using) a hardware device, such as a microprocessor, a programmable computer, or an electronic circuit. In some embodiments, at least one or more of the most important method steps are performed by such a device.

[0239] In some embodiments, a programmable logic device (e.g., a field programmable gate array) may be used to perform some or all of the functions of the methods described herein. In some embodiments, the field programmable gate array may operate in conjunction with a microprocessor to perform one of the methods described herein. In general, the methods are preferably performed by some hardware device.

[0240] Although the present invention has been described above with reference to preferred embodiments, it will be understood that those skilled in the art can make various modifications and changes to the present invention without departing from the spirit and scope of the present invention as set forth in the claims. [Explanation of symbols]

[0241] 100 Dispenser 200 Hydrogen Electric Vehicle (FCEV) 1000 Computing Systems 1100 processor 1200 memory 1300 Communication Interface 1400 Storage device 1500 Input Interface 1600 Output Interface 1700 Bus

Claims

1. 1. A hydrogen fueling communication method performed by a dispenser that supplies hydrogen fluid fuel to a hydrogen vehicle, the method comprising: Identifying a communication protocol supported by the hydrogen vehicle and a communication protocol supported by the dispenser based on a communication sequence performed by the hydrogen vehicle and information transmitted by the communication sequence; and determining a communication protocol to be performed between the hydrogen vehicle and the dispenser based on a communication protocol supported by the hydrogen vehicle and a communication protocol supported by the dispenser.

2. 2. The hydrogen filling communication method according to claim 1, wherein the information transmitted by the communication sequence includes a use classification of communicated data (UCDC) supported by the hydrogen vehicle.

3. The communication protocol includes at least one detailed sub-communication protocol; 2. The hydrogen filling communication method according to claim 1, wherein the at least one detailed sub-communication protocol corresponds to one of two-way communication, one-way communication, and no communication.

4. 2. The hydrogen filling communication method according to claim 1, wherein the information transmitted by the communication sequence includes at least one of a communication protocol supported by the hydrogen vehicle and a hydrogen filling protocol for supplying hydrogen fluid fuel to the hydrogen vehicle.

5. The step of determining a communication protocol comprises: determining communication protocol candidates based on a communication protocol supported by the hydrogen vehicle and a communication protocol supported by the dispenser; 2. The hydrogen filling communication method according to claim 1, further comprising: determining the communication protocol from the candidate communication protocols based on whether the candidate communication protocols correspond to a hydrogen filling protocol for supplying hydrogen fluid fuel to the hydrogen vehicle.

6. 2. The hydrogen filling communication method according to claim 1, wherein the step of determining the communication protocol determines the communication protocol based on at least one of interoperability and backward compatibility between the dispenser and the hydrogen vehicle.

7. sensing coupling between the hydrogen vehicle receptacle and the dispenser nozzle; 2. The hydrogen filling communication method according to claim 1, further comprising: receiving information transmitted by the communication sequence from the hydrogen vehicle when the coupling is detected.

8. The hydrogen filling communication method according to claim 7, further comprising a pairing step for identifying that the hydrogen vehicle indicated by the information transmitted by the communication sequence and the coupled hydrogen vehicle are the same individual.

9. sensing coupling between the hydrogen vehicle receptacle and the dispenser nozzle; waiting for the communication sequence of the hydrogen vehicle for a predetermined time period while the coupling is detected; 2. The hydrogen filling communication method according to claim 1, further comprising: identifying a communication protocol supported by the hydrogen vehicle based on whether a communication sequence from the hydrogen vehicle is received during the predetermined time period.

10. The step of determining a communication protocol comprises: Initiating a communication protocol negotiation when it is determined that bidirectional communication between the hydrogen vehicle and the dispenser is supported based on the information transmitted by the communication sequence; 2. The hydrogen filling communication method according to claim 1, further comprising: determining the communication protocol through the communication protocol negotiation.

11. A hydrogen fueling communication device mounted on a dispenser that supplies hydrogen fluid fuel to a hydrogen vehicle, comprising: a memory for storing at least one instruction; a processor that executes the at least one instruction; The processor executes the at least one instruction to: Identifying a communication protocol supported by the hydrogen vehicle and a communication protocol supported by the dispenser based on a communication sequence performed by the hydrogen vehicle and information transmitted by the communication sequence; A hydrogen filling communication device, characterized in that a communication protocol to be performed between the hydrogen vehicle and the dispenser is determined based on a communication protocol supported by the hydrogen vehicle and a communication protocol supported by the dispenser.

12. 12. The hydrogen filling communication device according to claim 11, wherein the information transmitted by the communication sequence includes a use classification of communicated data (UCDC) supported by the hydrogen vehicle.

13. The communication protocol includes at least one detailed sub-communication protocol; 12. The hydrogen filling communication device according to claim 11, wherein the at least one detailed sub-communication protocol corresponds to one of two-way communication, one-way communication, and no communication.

14. 12. The hydrogen filling communication device of claim 11, wherein the information transmitted by the communication sequence includes at least one of a communication protocol supported by the hydrogen vehicle and a hydrogen filling protocol for supplying hydrogen fluid fuel to the hydrogen vehicle.

15. The processor executes the at least one instruction to: When determining the communication protocol, determining communication protocol candidates based on a communication protocol supported by the hydrogen vehicle and a communication protocol supported by the dispenser; The hydrogen filling communication device according to claim 11, wherein the communication protocol is determined from the communication protocol candidates based on whether the communication protocol candidates correspond to a hydrogen filling protocol for supplying hydrogen fluid fuel to the hydrogen automobile.

16. The processor executes the at least one instruction to:

12. The hydrogen filling communication device according to claim 11, wherein the communication protocol is determined based on at least one of interoperability and backward compatibility between the dispenser and the hydrogen vehicle.

17. The processor executes the at least one instruction to: sensing coupling between the hydrogen vehicle receptacle and the dispenser nozzle; 12. The hydrogen filling communication device according to claim 11, wherein the information transmitted by the communication sequence is received from the hydrogen vehicle when the coupling is detected.

18. The processor executes the at least one instruction to:

18. The hydrogen filling communication device according to claim 17, further comprising a pairing process for identifying that the hydrogen vehicle indicated by the information transmitted by the communication sequence and the coupled hydrogen vehicle are the same individual.

19. The processor executes the at least one instruction to: sensing coupling between the hydrogen vehicle receptacle and the dispenser nozzle; awaiting the communication sequence of the hydrogen vehicle for a predetermined time period while the coupling is detected; 2. The hydrogen filling communication device according to claim 1, wherein the communication protocol supported by the hydrogen vehicle is identified based on whether a communication sequence from the hydrogen vehicle is received during the predetermined time period.

20. The processor executes the at least one instruction to: When determining the communication protocol, If it is determined that bidirectional communication between the hydrogen vehicle and the dispenser is supported based on the information transmitted by the communication sequence, starting a communication protocol negotiation; 12. The hydrogen filling communication device according to claim 11, wherein the communication protocol is determined by the communication protocol negotiation.

Images