WO2023163267A1

WO2023163267A1 - Apparatus for evaluating performance and safety of hydrogen gas charger, and evaluation method using same

Info

Publication number: WO2023163267A1
Application number: PCT/KR2022/003369
Authority: WO
Inventors: 이동훈; 하기역; 심근선; 심희준; 김병한
Original assignee: 한국가스안전공사
Priority date: 2022-02-28
Filing date: 2022-03-10
Publication date: 2023-08-31

Abstract

An apparatus for evaluating a hydrogen gas charger according to an embodiment of the present invention comprises: a main body; a storage unit; a charging unit; a substitution unit for releasing residual gas remaining in the interior and foreign substances; a venting unit for releasing content filling a pipe; a sensor unit for sensing at least one from among the temperature, pressure, and flux of the content, and sensing any leakage of same; a control unit for inspecting and assessing previously set attributes; and a display unit for displaying data on both a digital gauge and an analog gauge, wherein the venting unit additionally comprises a mass flow controller for controlling the content release capacity on the basis of the temperature of an hydrogen internal pressure container.

Description

Hydrogen charger performance and safety function evaluation device and evaluation method using the same

The present invention relates to an evaluation device for a hydrogen charger and an evaluation method using the same, and more particularly, determines whether hydrogen charging through a hydrogen charger is performed smoothly, whether hydrogen is safely charged, and whether an appropriate response is made when an abnormality occurs. It relates to an evaluation device for accurate evaluation within a short time and an evaluation method using the same.

Energy is the ability to do work and exists in position, motion, heat, electricity, chemical, nuclear, or many other forms.

A common form of energy production is the use of fossil fuels. Fossil fuels refer to energy resources buried underground, such as coal, petroleum, natural gas, oil shells, and tarside, derived from fossils of animals or plants.

Currently, most of the energy used by mankind is a non-cyclic depleting resource such as fossil fuel or uranium resource. In addition, fossil fuel or uranium resources have problems such as global warming and air pollution.

Therefore, there is a growing need for energy that can replace depleted fuel and protect the earth and the environment.

Accordingly, research on renewable energy is being actively conducted. Renewable energy refers to energy obtained from renewable sources such as sun, wind, rivers, hot springs, tides, and biofuels.

In particular, in the case of automobiles, petroleum, a representative fossil fuel, is used as the main fuel, but hydrogen fuel is attracting attention as a renewable energy that can replace it.

Hydrogen fuel applied to automobiles uses chemical cells to produce electrical energy. Electric vehicles using hydrogen fuel are not only quiet and have excellent acceleration performance while driving, but are also eco-friendly as they do not produce environmental pollutants.

Hydrogen fuel has the advantage that charging can be completed in a short time.

However, hydrogen fuel must maintain a predetermined temperature and pressure range in a state stored in a charging station or in the process of charging a hydrogen fuel vehicle.

In addition, the hydrogen fuel must be thoroughly prevented from leaking, and sufficient safety facilities must be provided in case normal charging cannot be performed.

At the time when hydrogen filling stations become popular, the need for an objective and accurate evaluation device that can inspect or evaluate the normal operation and safety of hydrogen filling stations is also increasing.

Republic of Korea Patent Registration No. 10-2070948 (hereinafter referred to as 'Related Technology 1') discloses a 'mobile hydrogen evaluation test facility'. Related technology 1 can perform various hydrogen evaluation tests, such as whether hydrogen is supplied to a hydrogen vehicle in quantity and whether the pressure and temperature of hydrogen are maintained in a normal state during hydrogen supply, and can be loaded on a trailer and moved to a remote location. Initiate the evaluation inspection facility.

However, there was a disadvantage in that it took a relatively long time to evaluate and inspect various inspection items, and there was also the inconvenience of repeating the situation of charging hydrogen into a hydrogen-filled cylinder several times.

In addition, in releasing hydrogen, there is a disadvantage in that it takes a long time to release the hydrogen to maintain a constant temperature and pressure range.

Conventional equipment loaded on a trailer may be damaged or exposed to safety accidents through shock or vibration applied to the trailer.

Therefore, it was necessary to propose a technique for solving these problems.

One object of the present invention is to provide an evaluation device and evaluation method capable of objectively evaluating the performance of a hydrogen charger.

Another object of the present invention is to solve the problem of the prior art, which took a long time to perform charging and discharging several times in evaluating a hydrogen charger.

Another object of the present invention is to solve the problem of the prior art, which took a long time to release the charged hydrogen.

Another object of the present invention is to solve the problem of the prior art that there is a risk of safety accident due to shock or vibration applied to the evaluation device in the process of moving.

Another object of the present invention is to provide an evaluation device that can derive more accurate evaluation results by providing the same environment as a hydrogen storage module of a large or small hydrogen fuel vehicle.

The tasks of the present invention are not limited to the contents mentioned above, and other tasks or objects not mentioned above will be understood by the following description.

An evaluation device for a hydrogen charger according to an embodiment of the present invention is a main body having a space formed therein and having a display unit and a front panel on the front side, and a storage unit installed in the space formed inside the main body and composed of a plurality of hydrogen pressure vessels. , A receptacle connected to a dispenser provided in the inspection target is provided, and a charging unit that transfers the hydrogen fuel supplied from the hydrogen charger to the storage unit is connected to the charging unit and the storage unit, and releases gases and foreign substances remaining inside the hydrogen pressure vessels. At least one of the temperature, pressure, and flow rate of the contents that are filled or flowed in the vent part, the storage part, the filling part, the substitution part, and the vent part that discharges the contents filled in the displacement part, the storage part, and the pipe connected to the storage part, respectively. Through the sensor unit that detects the leakage of the contents from the storage unit, the charging unit, the replacement unit, and the vent unit, and the control unit and sensor unit that inspects and evaluates predetermined items for the inspection target by processing the detected information through the sensor unit. It includes a display unit that simultaneously displays the sensed data in a digital gauge and an analog gauge, and the vent unit further includes a mass flow control system that adjusts the discharge capacity of the contents according to the temperature of the hydrogen pressure vessel.

In addition, in the evaluation device for a hydrogen charger according to an embodiment of the present invention, the storage unit includes a first hydrogen storage module in which three 52L capacity hydrogen pressure vessels are arranged in parallel, and three 52L capacity hydrogen pressure vessels are arranged in parallel, and a first A second hydrogen storage module disposed in a path separate from the hydrogen storage module and two hydrogen pressure vessels with a capacity of 175L are disposed in parallel and a third hydrogen storage disposed in a path separate from the first hydrogen storage module and the second hydrogen storage module. contains the module

Alternatively, in the hydrogen charger evaluation device according to an embodiment of the present invention, the storage unit is provided with a mass flow control system that adjusts the discharge capacity of the contents according to the temperature of each hydrogen pressure container.

And, in the hydrogen charger evaluation device according to an embodiment of the present invention, the main body further includes at least one emergency stop button provided on each side and blocking the operation of the charging unit when pressed.

Alternatively, the evaluation apparatus for a hydrogen charger according to an embodiment of the present invention further includes a loading container for loading the main body, and the main body includes at least six shock absorber modules provided at the bottom to attenuate vibration and shock transmitted from the loading container. Including, the buffer strength of the buffer module is adjusted according to the moving speed of the loading container.

According to the present invention, there is an advantage in that the operating performance and safety of the hydrogen charger can be quickly and accurately inspected and evaluated.

According to the present invention, there is an advantage in that cost and time can be saved by reducing the number of charging and discharging hydrogen for inspection and evaluation.

According to the present invention, there is an advantage in that the discharge of charged hydrogen can be performed relatively quickly within a safe range.

According to the present invention, there is an effect of improving safety by reducing shock and vibration that may be applied from the outside while the evaluation device moves.

The effects of the present invention are not limited to those mentioned above, and other effects not mentioned will be clearly understood by those skilled in the art from the description below.

1 is a front perspective view showing a main body in an evaluation device for a hydrogen charger according to an embodiment of the present invention.

2 is a rear perspective view showing a main body in an evaluation device for a hydrogen charger according to an embodiment of the present invention.

3 is a front view showing a main body in the evaluation apparatus for a hydrogen charger according to an embodiment of the present invention.

4 is a hydraulic circuit diagram showing an evaluation device for a hydrogen charger according to an embodiment of the present invention.

5 and 6 are diagrams showing a state in which an evaluation device for a hydrogen charger according to an embodiment of the present invention is loaded in a loading container.

7 and 8 are block diagrams showing communication evaluation and non-communication evaluation among the hydrogen charger evaluation methods using the evaluation device 10 according to an embodiment of the present invention.

9 is a flowchart illustrating a method for evaluating a hydrogen charger using an evaluation device according to an embodiment of the present invention.

Hereinafter, the present invention will be described with suitable examples. Embodiments of the present invention are described in more detail with reference to the accompanying drawings. Like reference numbers indicate like elements throughout the detailed description.

The evaluation device 10 according to an embodiment of the present invention is a device that inspects and evaluates whether a hydrogen charger operates normally and whether safety is maintained in the process of charging hydrogen fuel into a hydrogen fuel vehicle.

Therefore, the evaluation device 10 according to an embodiment of the present invention is configured to check items determined for the overall process of charging hydrogen fuel while going through a process of directly charging hydrogen by connecting a hydrogen charger.

In addition, it is possible to move to the place where the hydrogen charger is installed through the loading container 30.

First, the configuration of the evaluation device 10 will be described below.

1 is a front perspective view showing a main body 20 in a hydrogen charger evaluation device 10 according to an embodiment of the present invention, and FIG. 2 is a hydrogen charger evaluation device 10 according to an embodiment of the present invention. is a rear perspective view showing the main body 20, and FIG. 3 is a front view showing the main body 20 in the evaluation device 10 of a hydrogen charger according to an embodiment of the present invention.

1 to 3, the evaluation apparatus 10 according to an embodiment of the present invention includes a main body 20, a charging unit 200, a replacement unit 300, a storage unit 100, a vent unit ( 400), a control unit 500, a control unit 600, a communication unit 800, and a loading container 30.

The main body 20 is a housing in which a predetermined internal space is formed, and a hydrogen storage module and pipes for charging hydrogen are installed. The main body 20 is made of a solid skeleton and is designed to protect the hydrogen storage module from external impact.

In addition, a series of pipes are provided on the front surface of the main body 20 . The hydrogen fuel is transported through the pipe, and the temperature and pressure of the hydrogen fuel are measured at predetermined points during the transport route.

Specifically, the front panel 22 may be provided on the front surface of the main body 20, and pipes may be installed on the front panel 22. This is to increase the maintenance efficiency of pipes that need to be inspected frequently or periodically replaced by arranging the main pipes on the front panel 22 located in front of the main body 20.

The main body 20 is provided with a storage unit 100 .

The storage unit 100 is disposed in a space formed inside the main body 20 . In addition, a plurality of hydrogen storage modules may be provided in parallel in the storage unit 100 .

Each of the hydrogen storage modules includes a plurality of hydrogen pressure vessels (CHSS).

A plurality of hydrogen storage modules are arranged in parallel. The plurality of hydrogen storage modules can be divided into a first hydrogen storage module 110, a second hydrogen storage module 120, and a third hydrogen storage module 130.

In the evaluation device 10 according to an embodiment of the present invention, the first hydrogen storage module 110 and the second hydrogen storage module 120 are small hydrogen pressure vessels loaded in small and medium-sized passenger hydrogen fuel vehicles, respectively, and They may be provided in the same capacity and size.

In addition, the third hydrogen storage module 130 may have the same capacity and size as large hydrogen pressure-resistant containers loaded in large hydrogen fuel vehicles such as buses.

This is an example, and the capacity and size of the hydrogen pressure vessels provided in each hydrogen storage module may be appropriately implemented according to the embodiment to which the present invention is applied.

Each hydrogen storage module is formed of a plurality of hydrogen pressure vessels. That is, the first hydrogen storage module 110 and the second hydrogen storage module 120 may be formed by connecting three small hydrogen pressure-resistant containers in parallel.

The third hydrogen storage module 130 may be formed by connecting two large hydrogen pressure vessels in parallel.

In one embodiment of the present invention, the hydrogen pressure vessels included in the first hydrogen storage module 110 and the second hydrogen storage module 120 are a hydrogen pressure vessel 1-A (112) and a hydrogen pressure vessel 1-B (114). , Hydrogen pressure vessel 1-C (116), hydrogen pressure vessel 2-A (122), hydrogen pressure vessel 2-B (124), and hydrogen pressure vessel 2-C (126).

Hydrogen pressure vessels included in the third hydrogen storage module 130 are also classified into hydrogen pressure vessel 3-A (132) and hydrogen pressure vessel 3-B (134).

The hydrogen storage module is provided to provide the same or similar environment as the hydrogen pressure-resistant containers loaded in small, medium, and large-sized vehicles, and the hydrogen pressure-resistant containers are loaded in the main body 20 in a replaceable manner. At least one surface of the main body 20 is exposed to the outside, and hydrogen pressure vessels can be drawn out and loaded through the exposed space.

The charging unit 200 receives hydrogen from a hydrogen charger, which is an object of inspection and evaluation, and transfers it to the storage unit 100.

The charging unit 200 includes a receptacle 210 connected to a dispenser of a hydrogen charger, and hydrogen fuel flowing into the receptacle 210 moves to each hydrogen pressure vessel included in the storage unit 100 along a pipe.

The pipe leading from the receptacle 210 to the storage unit 100 includes a manual valve 270, a filter 220, a check valve 230,

temperature sensors

910 and 911,

pressure sensors

920 and 921, and an automatic valve ( 260) and the like are arranged. In addition, a mass flow meter 950 for detecting the mass and flow rate of supplied hydrogen fuel may be further disposed.

The filter 220 prevents foreign substances from being introduced into the pipe, and the check valve 230 prevents the supplied hydrogen fuel from flowing backward. The automatic valve 260 is a valve that operates using air pressure, and is involved in opening or closing a pipe connected to the receptacle 210, and a manual valve 270 for manual operation is also disposed on the same line.

The replacement unit 300 discharges air or foreign substances that may remain inside the pipe or storage unit 100 to the outside. The replacement unit 300 allows only the hydrogen fuel to be charged in the pipe and the storage unit 100 inside the device so that accurate evaluation can be performed.

Specifically, the replacement unit 300 creates an environment in which more accurate inspection and evaluation can be performed by allowing nitrogen to be discharged through the pipe and the storage unit 100.

The vent unit 400 discharges hydrogen fuel from the charging unit 200 and/or the storage unit 100 to the outside. That is, hydrogen fuel is discharged to the outside from a pipe belonging to the charging unit 200, or hydrogen fuel is discharged to the outside from a pipe belonging to the storage unit 100 or a hydrogen pressure vessel.

The vent unit 400 first performs a function of discharging the hydrogen fuel charged in the storage unit 100 to the outside. The vent unit 400 is connected to each of a plurality of hydrogen pressure vessels included in the storage unit 100 to independently discharge hydrogen fuel from each hydrogen pressure vessel.

In addition, the vent unit 400 may arbitrarily create a situation in which hydrogen leaks from the charging unit 200 and/or the storage unit 100 . Specifically, when hydrogen fuel is discharged to the outside from a pipe belonging to the charging unit 200 through the vent unit 400, the same environment as a situation in which hydrogen fuel leaks from the charging unit 200 is created. Similarly, when hydrogen fuel is discharged from the pipe or hydrogen pressure vessel belonging to the storage unit 100 to the outside through the vent unit 400, a situation in which hydrogen fuel leaks from the pipe or hydrogen pressure vessel belonging to the storage unit 100 occurs and The same environment is created.

The configuration of the vent part 400 plays a role in releasing the hydrogen fuel charged in the storage part 100 to the outside, and creates an environment in which hydrogen leaks in a predetermined section, thereby inspecting whether the hydrogen charger detects it and reacts normally. and to be able to evaluate.

A configuration that creates an environment in which hydrogen is leaked may be one of 'data in an abnormal operation state' to be described later.

A mass flow control system 410 (MFC) may be provided in the vent unit 400 . The mass flow control system 410 detects the temperature of the hydrogen pressure vessel in which hydrogen fuel is being discharged through the analog temperature sensor 910 and/or the digital temperature sensor 911 attached to the hydrogen pressure vessel, and changes the temperature of the hydrogen pressure vessel. According to the flow rate of the hydrogen fuel is dynamically released. The discharge flow rate control through the mass flow control system 410 enables the temperature of the hydrogen pressure vessel to be maintained within a predetermined temperature range (normal temperature range) when hydrogen fuel is discharged. In this configuration, when discharging the hydrogen fuel charged in the hydrogen pressure vessel, the temperature of the hydrogen pressure vessel is sensed in real time and the discharge capacity is interlocked therewith to safely and quickly discharge the hydrogen fuel.

The vent unit 400 connects a high-pressure hose with a vent line provided in a hydrogen charger to be inspected to discharge hydrogen fuel charged in each hydrogen pressure container, or uses a mobile vent device to release hydrogen fuel charged in each hydrogen pressure container. may emit.

4 is a hydraulic circuit diagram showing an evaluation device 10 for a hydrogen charger according to an embodiment of the present invention.

The control unit 500 includes a manual operation made in the form of a button or valve on the outside of the main body 20 . The manual control unit includes at least one emergency stop button 510 provided on the outside of the main body 20 . A plurality of emergency stop buttons 510 may be provided on each side of the main body 20, and when an operator operates the emergency stop button 510, all operations of the evaluation device 10 according to an embodiment of the present invention are performed. this is stopped

All control units 500 in the form of an emergency stop button 510 or a valve can be operated manually, but can be automatically controlled electronically.

That is, the control unit 500 may further include an automatic control unit that can be electronically and automatically adjusted. The automatic control unit may be implemented in the form of a PC or a laptop computer that can be provided or connected to the main body 20, and can be configured to open or close a pipe, detect pressure, temperature, and flow rate at a specific point and transmit them through a preset program. can be done through

The control unit 600 may include a processor that performs a series of calculations, and may include a storage for storing data or programs for performing calculations.

The control unit 600 may be implemented as a control module 610 provided inside the explosion-proof box attached to the main body 20. Alternatively, it may be implemented in the form of a PC or notebook that can be connected to the main body 20 .

The control unit 600 receives and stores data values measured from the digital temperature sensor 910, the digital pressure sensor 920, and the mass flow meter 950 provided in the evaluation device 10 according to an embodiment of the present invention. and compares it with the specified conditions to determine whether the hydrogen charger is operating normally.

The control module 610 of the control unit 600 stores various evaluation items, collects necessary data for each evaluation item, determines whether the collected data falls within the normal range, stores it in real time, and provides a communication unit 800 to a designated target. sent through

Also, the controller 600 may correct a series of data values to create a virtual environment. This process is referred to as generating 'data in an abnormal operation state'. For example, even if normal temperature and pressure data are being collected during hydrogen fuel charging in order to evaluate whether the safety facilities of the hydrogen charger are operating normally, the temperature or pressure data is corrected so that it is out of normal values, and this corrected information is transmitted to the communication unit (800 ) can be sent to the hydrogen charger.

Accordingly, it is possible to evaluate whether the hydrogen charger receives temperature or pressure data outside the normal range, stops operation, and sends an abnormal signal.

The display unit 700 may be provided on the front panel 22 of the main body 20 or on the front panel 22 . The location of the display unit 700 is not limited to a specific location. The display unit 700 is provided at a location that is easy for a worker to observe. The display unit 700 displays data measured by the analog temperature sensor 911, the digital pressure sensor 920, and the analog pressure sensor 921 provided in the main body 20 in digital and analog methods.

The communication unit 800 may be provided in the receptacle 210 of the charging unit 200 . The dispenser of the hydrogen charger is equipped with a communication means (IR) corresponding to the communication unit 800 so that the communication unit 800 and the hydrogen charger can exchange data.

The communication unit 800 includes a communication module 810, and the communication module 810 may be integrally formed with the receptacle 210 as shown. The communication module 810 may be contacted or non-contacted with a communication means provided in the dispenser of the hydrogen charger.

The sensor unit includes

temperature sensors

910 and 911 ,

pressure sensors

920 and 921 , a mass flow meter 950 , a gas leak detector 960 and a flame detector 970 .

The

temperature sensors

910 and 911 include an analog temperature sensor 910 and a digital temperature sensor 911 .

The

pressure sensors

920 and 921 include an analog pressure sensor 920 and a digital pressure sensor 921 . In addition, the analog temperature sensor 910, the digital temperature sensor 911, the analog pressure sensor 920, the digital pressure sensor 921, and the mass flow meter 950 are each in the evaluation device according to an embodiment of the present invention. A pipe is provided in each hydrogen pressure vessel.

Temperature sensors

910 and 911 and

pressure sensors

920 and 921 use both digital and analog methods, respectively. The digital temperature sensor 911 and the digital pressure sensor 921 transmit the measured temperature and pressure values to the control unit 600, and the control unit 600 stores these values in a storage and, through the communication unit 800, determines the server or sent to the terminal. At this time, the designated server or terminal may include a hydrogen charger.

The mass flow meter 950 may be attached to the charging unit 200 to obtain a flow rate of hydrogen charged through a pipe. Alternatively, a mass flow controller 410 (MFC, mass flow controller) operating to maintain a constant flow rate when hydrogen fuel is discharged from a predetermined pipe or hydrogen pressure vessel may be further provided.

And, the gas leak detector 960 determines gas leakage by detecting a predetermined gas component. In one embodiment of the present invention, the gas leak detector 960 is provided to detect hydrogen, and transmits this information to the control unit 600 when hydrogen gas having a predetermined hydrogen concentration or higher is detected.

When hydrogen leakage is received from the gas leak detector 960, the control unit 600 stops the operation of the evaluation device 10, sounds an alarm buzzer or turns on an explosion-proof lamp 990 according to a predetermined procedure, and performs a series of steps. Sends out an alarm or signal.

In addition, the sensor unit may include a pressure safety valve (930), a pressure regulator valve (940), and the like.

The safety valve 930 is located between the charging unit 200 and the storage unit 100, and is connected to the vent unit 400 to charge without additional manipulation when the pressure of the fluid being charged or stored increases above the design pressure. And by immediately discharging the storage gas to the vent unit 400, damage to the component is prevented.

And the pressure control valve 940 controls the flow path so that the fluid flows above or below a certain pressure, respectively.

In addition, an environmental thermo-hygrometer 980 for monitoring the temperature and humidity of the pipe and/or the hydrogen pressure vessel and a flame detector 970 for monitoring a fire may be further provided.

5 and 6 are views showing an evaluation device 10 for a hydrogen charger according to an embodiment of the present invention.

As shown in FIGS. 5 and 6 , the evaluation apparatus 10 according to an embodiment of the present invention may move while being loaded in the loading container 30 .

This makes it possible to inspect and evaluate hydrogen chargers installed in different places while moving between hydrogen filling stations scattered in various places.

At least three pedestals 23 are formed below the main body 20 , and the pedestal 23 supports the load of the main body 20 . The pedestal 23 may be disposed on the left side, the right side, and the center based on the direction in which the front panel 22 of the main body 20 faces. The pedestal 23 is formed long across the main body 20 .

And, the pedestal 23 is provided with a buffer module 24 . The buffer module 24 attenuates transmission of vibration or impact generated during operation of the evaluation device 10 to the main body 20 installed in the loading container 30 .

At least two buffer modules 24 may be provided under each pedestal 23 . That is, the main body 20 includes at least six shock absorbing modules 24 .

Preferably, three buffer modules 24 are provided on each pedestal 23, and the main body 20 may be supported by a total of nine buffer modules 24.

The buffer module 24 may be interlocked with the driving system of the evaluation device 10 .

Specifically, the shock absorbing strength of the shock absorbing module 24 may vary in association with the moving speed of the evaluation device 10 .

For example, when the evaluation device 10 is stopped, the vibration damping between the main body 20 and the pedestal 23 of the shock absorbing module 24 increases. When the speed of the evaluation device 10 gradually increases from a stationary state, damping of vibration between the main body 20 and the pedestal 23 may decrease according to the increased speed. That is, the suspension action of the shock absorber module 24 may change in association with the moving speed of the evaluation device 10 .

In addition, a shock sensor may be further provided in the main body 20 . When the shock sensor detects an external force equal to or greater than a predetermined amount of impact when the main body 20 moves while being installed in the loading container 30, the shock sensor transmits it to the controller 600, and the controller 600 controls the storage unit 100 and Hydrogen remaining in the pipe is immediately released to the outside so that the pressure inside the storage unit 100 and the pipe converges to atmospheric pressure.

A method for evaluating a hydrogen charger using the evaluation device 10 according to an embodiment of the present invention will be described below with reference to FIGS. 7 and 8 .

Items for inspecting and evaluating the hydrogen charger of a hydrogen filling station can be largely divided into communication evaluation and non-communication evaluation.

(non-communication charging evaluation)

Non-telecommunication charging evaluation is related to so-called non-telecommunication charging (SAE J2601 - non-telecommunication charging protocol), which conservatively recharges hydrogen using the initially measured data.

For example, after the hydrogen charger measures the storage capacity of the

hydrogen storage modules

110, 120, and 130, the atmospheric temperature, the hydrogen supply temperature, and the initial pressure of the

hydrogen storage modules

110, 120, and 130 by itself, the measurement Based on the obtained data, it can be applied to the case of charging hydrogen fuel in a hydrogen fuel vehicle. Conservative final target pressure based on the results of the hydrogen charger's own measurement of the storage capacity of the hydrogen storage modules (110, 120, 130), the ambient temperature, the hydrogen supply temperature, and the initial pressure of the hydrogen storage modules (110, 120, 130) and the average pressure rise rate are determined, and according to this, whether the hydrogen charger performs an appropriate operation within the specified normal range before or during charging of hydrogen fuel is inspected and evaluated.

(Communication charging evaluation)

In the communication charging evaluation, the hydrogen charger receives predetermined data from the charging target (evaluation device 10 in one embodiment of the present invention) using IR communication (infrared communication) (in this case, it may be one-way communication), It is related to communication charging (SAE J2601-communication charging protocol) that measures the temperature and pressure of the hydrogen storage modules (110, 120, 130) in real time during the hydrogen charging process.

For example, a hydrogen charger determines a final target pressure and an average pressure rise rate based on the information of the air temperature, hydrogen supply temperature, and charging target measured by itself.

At this time, the information on the charging target may be the storage capacity, initial pressure, and the like of the

hydrogen storage modules

110, 120, and 130 provided in the evaluation device 10 in one embodiment of the present invention.

When communication is initiated, the evaluation device 10, which is a charging target, transmits identification information, charging command, charging port type, storage capacity of the

hydrogen storage module

110, 120, and 130 to the hydrogen charger through the communication unit 800, real-time pressure, real-time Provides other information such as temperature.

The communication charging evaluation includes a process in which data is unidirectionally or bidirectionally transmitted between at least two devices, and by using this process, the hydrogen fuel charging from the hydrogen charger to the evaluation device 10 is performed before or during charging. Inspect and evaluate whether the hydrogen charger performs proper operation within the specified normal range.

The communication charging evaluation and non-communication charging evaluation of hydrogen chargers include abnormal signal evaluation, communication evaluation, leakage detection evaluation, and normal charging evaluation.

The abnormal signal evaluation items commonly verified in non-communication charging evaluation and communication charging evaluation are as follows, and in one embodiment of the present invention, they are divided into first evaluation items and second evaluation items.

The abnormal signal evaluation items are the hydrogen charger side evaluation that performs inspection and evaluation through data obtained from the hydrogen charger and the evaluation device that performs inspection and evaluation based on the data received through the communication unit 800 of the evaluation device 10 ( 10) side data evaluation.

(Evaluation item 1-evaluation item for hydrogen charger sensor error)

The procedure for verifying the first evaluation item and the data collected for this purpose are as follows.

First, the evaluation proceeds through a series of processes in which hydrogen fuel is supplied from the hydrogen charger to the storage unit 100 of the evaluation device 10 and discharged to the vent unit 400.

And, the hydrogen charger itself measures the pressure, temperature, and flow rate for supplying hydrogen fuel to the evaluation device 10 . At this time, the purity check of hydrogen fuel is excluded.

During a series of processes in which the evaluation device 10 is charged with hydrogen fuel, a series of data capable of determining whether normal charging is performed for each predetermined situation, such as before charging starts, during charging, or immediately after charging, is provided to the control unit 600. stored in advance

The control unit 600 can share state data when the hydrogen charger does not operate normally with the hydrogen charger, and in a state where the data of the abnormal operation state is shared with the hydrogen charger, the hydrogen charger appropriately responds to the abnormal operation state data. Inspect and evaluate if it performs a response.

(Second evaluation item-sensor data error item of evaluation target (evaluation device))

The procedure for verifying the second evaluation item and the data collected for this purpose are as follows.

Evaluation is performed through a series of processes in which hydrogen fuel is charged from the hydrogen charger to the storage unit 100 provided in the evaluation device 10 and discharged to the vent unit 400.

In addition, the temperature and pressure data of the

hydrogen storage modules

110, 120, and 130 are collected by classifying them into charging before starting charging of hydrogen fuel and during charging. These data are transmitted to the hydrogen charger through the communication unit 800.

During the process of charging hydrogen fuel into the storage unit 100 of the evaluation device 10, when abnormal operation data that can be determined as abnormal operation is input to the hydrogen charger before charging starts or during charging, the hydrogen charger Inspect and evaluate whether you are performing the correct response.

Specifically, the hydrogen charger can measure the pressure, temperature, and flow rate of the hydrogen fuel supplied to the evaluation device 10. In addition, the pressure, temperature, and flow rate for a predetermined point among the pipes of the evaluation device 10 or the storage unit 100 may be measured. The hydrogen charger inspects the data measured from the evaluation device 10 before or during charging of the hydrogen fuel, and if it is determined that the state in which the hydrogen fuel is charged in the evaluation device 10 is not normal, it performs a corresponding operation. do. To check this, modulated data can be input to the hydrogen charger.

The modulated data may be data in an abnormal operation state that may occur before or during charging of hydrogen fuel in the evaluation device 10 .

According to an embodiment of the present invention, when such modulated data is input to the hydrogen charger, the hydrogen charger immediately detects the modulated data, stops charging according to a series of manuals, and inspects and evaluates whether an abnormal signal is transmitted. .

(Communication evaluation)

In the communication evaluation, the hydrogen charger inspects the data received through the communication unit 800 provided in the evaluation device 10 during the communication charging process.

Identification information of the evaluation device 10 determined by the hydrogen charger standard (SAE J2799-IR communication regulations), charging command, charging port type, storage capacity of the hydrogen storage module (110, 120, 130), real-time pressure, real-time temperature, It is assumed that there is an abnormality in the process of transmitting and receiving other data, and in this case, it is inspected and evaluated to see if the hydrogen charger operates in response to the abnormality. In an embodiment of the present invention, expressions such as 'assuming an abnormal case', 'anomaly symptom', 'error detection', or 'error occurrence' mean that the measured data is subject to a pre-determined 'abnormal' condition. Indicates that it conforms to, or is outside the conditions of a pre-determined 'normal' situation.

(leak detection evaluation)

The leakage detection evaluation item is to evaluate whether the hydrogen charger itself can detect a connection defect between the hydrogen charger and the evaluation device 10 or a leak of hydrogen fuel that may occur in the evaluation device 10.

In addition, in the process of charging the hydrogen fuel from the hydrogen charger to the storage unit 100 provided in the evaluation device 10, leakage of the hydrogen fuel charged or being charged in the storage unit 100 using the vent unit 400 and inspects and evaluates whether the hydrogen charger detects it immediately, stops charging according to the manual, and sends an abnormal signal.

(Normal charge evaluation)

Unlike a series of error checks, the normal charging evaluation items collect the charging information measured through the hydrogen charger and the evaluation device 10, but the evaluation target (10 ) to inspect and evaluate whether hydrogen fuel is charged.

(Evaluation stage)

The inspection and evaluation of each evaluation item described above can be performed through the following steps.

The evaluation method of a hydrogen charger according to an embodiment of the present invention includes a charging step (S10), an inspection step (S20), a comparison verification step (S30), a discharge step (S40), a rechecking step (S50), and a detailed inspection step ( S60).

The charging step (S10) is a step in which hydrogen fuel is charged from the hydrogen charger to the storage unit 100 of the evaluation device 10. In the normal charging step (S10), hydrogen fuel is charged to one or all of the first hydrogen storage module 110, the second hydrogen storage module 12, and the third hydrogen storage module 130 provided in the storage unit 100. It can be. In one embodiment of the present invention, the first hydrogen storage module 110 is charged.

In addition, in the charging step (S10), hydrogen fuel is charged, and a state related to charging is measured. Specifically, air temperature, hydrogen temperature, flow rate, and pressure may be measured through sensors provided in the hydrogen charger, and container storage capacity, container temperature, and container pressure may be measured through the evaluation device 10 .

When an 'error is detected' as a result of analyzing the measured data ('an error is detected' as described above, the measured data meets the condition of a predetermined 'abnormal' situation or a predetermined 'normal' situation) It indicates that it is out of the condition.) Immediately, the comparison verification step (S30) and the release step (S40) can be performed.

In the inspection step (S20), data of the abnormal operation state is generated and input to the hydrogen charger, and the result of the hydrogen charger reacting to the data of the abnormal operation state is observed.

The inspection step (S20) may be performed before the charging step (S10) or may be performed together with the charging step (S10).

In addition, in the comparative verification step (S30), when an 'error is detected' in the operating state of the hydrogen charger or evaluation device 10 observed through the charging step (S10) or the inspection step (S20), the storage unit 100 being charged When the storage space of ) is the first hydrogen storage module 110, the second hydrogen storage module 120 or the third storage space of the storage unit 100 other than the first hydrogen storage module 110 being charged Start charging hydrogen fuel to one of the hydrogen storage modules 130 and observe whether the same error is detected.

In the discharge step (S40), contents are discharged from the

hydrogen storage modules

110, 120, and 130 being charged because the inspection (charging) has been completed or an error has been found in the operating state.

In the re-examination step (S50), if the evaluation of the hydrogen charger is not completed through the comparison and verification step (S30), the hydrogen fuel charging and evaluation of the hydrogen storage modules (110, 120, 130) for which the emission step (S40) has been completed is performed again. carry out Specifically, when the

hydrogen storage modules

110, 120, and 130 in which the inspection step (S20) and the release step (S40) were sequentially performed are the first hydrogen storage module 110, the rechecking step (S50) is the first hydrogen storage module. It is performed for module 110.

The detailed inspection step (S60) may be separately performed for evaluation items that are impossible or difficult to evaluate in real time.

In the above-described evaluation method, since the durability limit of the hydrogen pressure vessel installed in the evaluation device 10 is set and the number of times of charging and discharging is limited, deterioration in evaluation accuracy due to a decrease in durability of the hydrogen pressure vessel is prevented.

In the above, the embodiments of the present invention have been described with drawings, but this is exemplary and the present invention is not limited to the above-described embodiments and drawings. It is obvious that those skilled in the art can modify the present invention within the scope of the technical spirit of the disclosed contents. In addition, even if the action or effect according to the configuration was not explicitly described while describing an embodiment of the present invention above, it is natural that even the effects predictable by the configuration should be recognized.

Claims

A main body having a space formed therein and having a display unit and a front panel on the front side;

a storage unit installed in a space formed inside the main body and composed of a plurality of hydrogen pressure vessels;

a charging unit having a receptacle connected to a dispenser provided in the inspection target and transporting hydrogen fuel supplied from the inspection target to the storage unit;

a displacement unit connected to the charging unit and the storage unit and discharging gas and foreign substances remaining in the hydrogen pressure vessels;

a vent unit for discharging contents filled in the storage unit and a pipe connected to the storage unit;

The storage unit, the charging unit, the displacement unit, and the vent unit are respectively provided to sense at least one of the temperature, pressure, and flow rate of the filled or flowing contents, and the storage unit, the charging unit, the displacement unit, and the vent unit. A sensor unit for detecting leakage of contents from the;

a controller for storing predetermined evaluation items and comparing data sensed through the sensor unit with the evaluation items; and

A display unit for simultaneously displaying the data sensed through the sensor unit in a digital gauge and an analog gauge;

The vent part,

Further comprising a mass flow control system for adjusting the discharge capacity of the contents according to the temperature of the hydrogen pressure vessel,

Hydrogen charger evaluation device.
According to claim 1,

the storage unit,

A first hydrogen storage module in which three 52L capacity hydrogen pressure vessels are arranged in parallel;

a second hydrogen storage module in which three 52L capacity hydrogen pressure vessels are arranged in parallel and arranged in a path separate from the first hydrogen storage module; and

A third hydrogen storage module in which two 175L capacity hydrogen pressure vessels are disposed in parallel and disposed in a separate path from the first hydrogen storage module and the second hydrogen storage module;

Hydrogen charger evaluation device.
According to claim 2,

the storage unit,

Each of the hydrogen pressure vessels is provided with a mass flow control system that adjusts the discharge capacity of the contents according to the temperature.

Hydrogen charger evaluation device.
According to claim 1,

the body,

At least one emergency stop button provided on each side to block the operation of the charging unit when pressed; further comprising,

Hydrogen charger evaluation device.
According to claim 1,

Further comprising a loading container for loading the main body,

the body,

At least six buffer modules provided at the lower portion to attenuate vibration and shock transmitted from the loading container;

In the buffer module, the buffer strength is adjusted according to the moving speed of the loading container.

Hydrogen charger evaluation device.
A method for evaluating a hydrogen charger using the evaluation device according to any one of claims 1 to 5,

A charging step of charging hydrogen fuel from the inspection target to the first hydrogen storage module;

a discharge step of discharging the contents contained in the first hydrogen storage module when charging of the first hydrogen storage module is completed through the normal charging step or an error is detected from an inspection target;

a comparison verification step of charging hydrogen fuel into the second hydrogen storage module and observing a state of charge while performing the discharging step;

An inspection step of randomly generating and inputting abnormal operation state data to an inspection target and observing the charging process of hydrogen fuel; and

A rechecking step of recharging hydrogen fuel into the first hydrogen storage module that has passed through the discharging step and observing the state of charge of the hydrogen fuel;

Evaluation method of hydrogen charger.