KR102427385B1 - Hydrogen charging controller and hydrogen charging station - Google Patents

Abstract

The present invention provides a plurality of hydrogen pipes for delivering hydrogen for charging for hydrogen refueling of vehicles, a plurality of pressure sensors for sensing the pressure of each of the plurality of hydrogen pipes, and a plurality of on-off valves, wherein each on-off valve includes a plurality of pressure sensors To a hydrogen charging controller and a hydrogen charging station, comprising: a plurality of on-off valves capable of opening and closing a hydrogen pipe coupled to and a hydrogen charging controller for detecting hydrogen leakage in the plurality of hydrogen pipes through control of the plurality of on-off valves.

Description

HYDROGEN CHARGING CONTROLLER AND HYDROGEN CHARGING STATION

The present invention relates to a hydrogen charging controller and a hydrogen charging station, and specifically, it is possible to specify the location of hydrogen leakage in the hydrogen charging station, and dynamic performance diagnosis of various sensors provided using the collected big data is possible, and for hydrogen supply It relates to a hydrogen charging controller and a hydrogen charging station capable of reducing power consumption.

Due to the exhaustion of fossil fuels such as gasoline and diesel, environmental pollution, etc., automobiles using a power source to replace fossil fuels are being widely studied and distributed. Typically, electric vehicles and hydrogen vehicles are vehicles that use alternative power sources, and many research and development related to electric vehicles and hydrogen vehicles are in progress.

In particular, a hydrogen vehicle is a vehicle that uses hydrogen as a power source and does not emit carbon dioxide and the like, and is known as an environmentally friendly vehicle by emitting only pure water after hydrogen consumption.

A hydrogen charging station (hydrogen refueling station) needs to be installed in order to charge hydrogen in a hydrogen vehicle. The hydrogen filling station selects and charges hydrogen from a reformer that makes hydrogen, a high-pressure compressor that compresses hydrogen in the reformer, a plurality of high-pressure storage containers for storing hydrogen compressed in the high-pressure compressor, and one high-pressure storage container among several high-pressure storage containers It is equipped with devices such as a dispenser (charger) that can charge hydrogen in a hydrogen vehicle, including a priority panel for outputting hydrogen for use, and a charging gun, and a heat exchanger for cooling the hydrogen in the dispenser.

A hydrogen pipe may be provided between each device in the hydrogen filling station to deliver hydrogen for charging to the next stage or to the subsequent device. Hydrogen for charging is stored at high pressure and charged to a hydrogen vehicle at high pressure. The hydrogen charging station may be equipped with a high-pressure storage container such as 450 Bar and 900 bar to fill hydrogen of a maximum specified value for a hydrogen vehicle (eg, 875 Bar for a vehicle).

A hydrogen refueling station that stores, stores, and supplies high-pressure hydrogen and consists of a complex number of devices presents a number of considerations. The hydrogen filling station must store high-pressure hydrogen safely without leakage, and in the event of a leak, the operation of the hydrogen filling station is stopped to prevent explosion, and a leak check process for hydrogen pipes between various devices is required.

The leak can be checked through the sound generated from the hydrogen pipe, which takes a lot of time to check, and it is difficult to determine whether it is a problem in the hydrogen pipe installation process or an error caused by the control system.

In addition, the hydrogen charging station judges the safety or instability of hydrogen charging using the sensing values of pressure sensors and temperature sensors installed in several hydrogen pipes, etc. If the sensor fails, the operation of the hydrogen charging system is stopped, and the operation of the hydrogen charging system is stopped, diagnosed and repaired. A problem that takes a lot of time arises.

In addition, the hydrogen filling station needs to be equipped with a heat exchanger to maintain hydrogen at a low temperature (eg minus 40 degrees Celsius) according to the standard and supply it to the hydrogen vehicle. The heat exchanger for maintaining low-temperature hydrogen is designed to operate 24 hours to maintain an appropriate temperature at all times, resulting in inefficiency in consuming a lot of power.

There is a need for a hydrogen charging controller and a hydrogen charging station that can solve various problems of the existing hydrogen charging station.

KR10-2020-0096481, Aug 12, 2020

The present invention has been devised to solve the above problems, and an object of the present invention is to provide a hydrogen charging controller and a hydrogen charging station that can improve the stability and efficiency of hydrogen charging.

In addition, an object of the present invention is to provide a hydrogen charging controller and a hydrogen charging station capable of dynamically finding a hydrogen leakage location and confirming a hydrogen leakage supplied for hydrogen charging.

In addition, the present invention collects the characteristic values of the sensors provided in the hydrogen charging station and predicts and informs the abnormality of the sensor in advance according to the collected characteristic values, a hydrogen charging controller and a hydrogen charging station capable of uninterrupted hydrogen charging station operation Its purpose is to provide

In addition, the present invention analyzes the operating characteristics of the heat exchanger according to the measured data and controls the on/off of the heat exchanger according to the analyzed operating characteristics to dramatically reduce the power consumed in the hydrogen charging station and hydrogen charging controller and hydrogen It aims to provide a charging station.

The technical problems to be achieved in the present invention are not limited to the technical problems mentioned above, and other technical problems not mentioned will be clearly understood by those of ordinary skill in the art to which the present invention belongs from the description below. will be able

A hydrogen charging station according to an aspect of the present invention is a plurality of hydrogen pipes for delivering hydrogen for charging for hydrogen charging of a vehicle, a plurality of pressure sensors for sensing the pressure of each of the plurality of hydrogen pipes, and a plurality of on-off valves, each The on-off valve includes a plurality of on-off valves capable of opening and closing a hydrogen pipe coupled to a plurality of pressure sensors, and a hydrogen filling controller for detecting hydrogen leakage in the plurality of hydrogen pipes through control of the plurality of on-off valves, a hydrogen filling controller controls the supply of hydrogen for charging to the plurality of hydrogen pipes, closes the first on-off valve and the second on-off valve among the plurality of on-off valves, and a third opening and closing between the first on-off valve and the second on-off valve among the plurality of on-off valves In a state in which the valve is opened, whether the hydrogen pipe between the first on-off valve and the second on-off valve is leaking is detected through a pressure sensor corresponding to the first on-off valve or the second on-off valve.

In the above-described hydrogen filling station, the hydrogen filling controller detecting the hydrogen leakage between the first on-off valve and the second on-off valve closes the first on-off valve and the third on-off valve, and closes the first on-off valve among the plurality of on-off valves and detecting whether the hydrogen pipe between the first on-off valve and the third on-off valve is leaking through a pressure sensor corresponding to the first on-off valve or the third on-off valve in a state where the on-off valve between the third on-off valves is opened, Close the third on-off valve and the second on-off valve according to the result of whether the hydrogen pipe between the first on-off valve and the third on-off valve leaks, and an on-off valve between the third on-off valve and the second on-off valve among the plurality of on-off valves In the open state, whether the hydrogen pipe between the third on-off valve and the second on-off valve is leaking is detected through the second on-off valve or a pressure sensor corresponding to the third on-off valve.

In the above-described hydrogen filling station, the first on-off valve is an on-off valve capable of opening and closing a hydrogen pipe between the high-pressure compressor and the high-pressure storage container of the hydrogen filling station, and the second on-off valve is a dispenser for hydrogen filling of a vehicle in the hydrogen filling station. It is an on-off valve that can open and close the hydrogen pipe between the filling gun and the pre-cooler, and the hydrogen filling controller is built into the dispenser.

In the hydrogen filling station, the hydrogen filling controller collects sensing values for specifying pressure from each of a plurality of pressure sensors according to the operation of the hydrogen filling station, and collects the sensed values of each of the plurality of pressure sensors and the previous pressure sensor A reference pressure difference margin range is configured based on the difference from the sensed values of Diagnose the pressure sensor according to the judgment of inner cognition.

In the above-described hydrogen filling station, further comprising a hydrogen filling control device for monitoring the hydrogen filling station, wherein the hydrogen filling controller is a current that is a sensed value for specifying a pressure from each of a plurality of pressure sensors according to the operation of the hydrogen filling station The pressure sensor collects values and configures a reference pressure difference margin range based on the difference between the collected current values of each of the plurality of pressure sensors and the current values of the previous pressure sensor, and after configuring the reference pressure difference margin range of the pressure sensor The pressure sensor is diagnosed according to the determination of whether the pressure difference according to the difference between the current value received from the current value and the current value of the previous pressure sensor is within the reference pressure difference margin range, and diagnostic information is transmitted to the hydrogen charging control device, and the hydrogen charging control device is A diagnosis notification message indicating diagnosis information is transmitted to the manager terminal.

In the above hydrogen filling station, further comprising a heat exchanger for cooling the hydrogen output through the filling gun to a specified temperature, the hydrogen filling controller, cooling on-off control over a plurality of times on different days for the heat exchanger Collect possible data to specify the correlation between atmospheric temperature and return to a specified temperature through The cooling-on control signal is output to the heat exchanger at the second time determined according to the temperature, and the second time determined according to the external ambient temperature is tuned according to the time at which the temperature is returned to the designated temperature after the second time.

In the above hydrogen filling station, further comprising a plurality of temperature sensors for sensing the temperature of each of the plurality of hydrogen pipes and a hydrogen filling control device for monitoring the hydrogen filling station, wherein the hydrogen filling controller includes a plurality of pressure sensors and a plurality of pressure sensors The sensing values of the temperature sensor are transmitted to the hydrogen charging control device, and the hydrogen charging control device analyzes the state of the hydrogen charging station from the sensing values of the plurality of pressure sensors and the plurality of temperature sensors and sends a status notification message indicating the analyzed status. It is transmitted to the manager terminal through the app or the web.

In addition, the hydrogen charging controller according to an aspect of the present invention is coupled to a sensor interface for receiving a sensing value from a plurality of pressure sensors for sensing the pressure of each of a plurality of hydrogen pipes provided in the hydrogen charging station, each of the plurality of pressure sensors An on/off valve interface for setting an opening/closing control signal to a plurality of opening/closing valves capable of opening and closing the hydrogen pipe, and a control unit for detecting hydrogen leakage in the plurality of hydrogen pipes through an opening/closing control signal set to each of the plurality of opening/closing valves; Closes the first on-off valve and the second on-off valve among the plurality of on-off valves and sends an on-off control signal for opening the third on-off valve between the first on-off valve and the second on-off valve among the plurality of on-off valves. and detects whether the hydrogen pipe between the first on-off valve and the second on-off valve is leaking from the sensing value received from the pressure sensor corresponding to the first on-off valve or the second on-off valve through the sensor interface.

In the above-described hydrogen charging controller, the control unit detecting the hydrogen leakage between the first on-off valve and the second on-off valve closes the first on-off valve and the third on-off valve, and the first on-off valve and the second on-off valve among the plurality of on-off valves 3 An on/off control signal for opening the on/off valve between the on/off valves is set through the on/off valve interface, and the leakage of the hydrogen pipe between the first on/off valve and the third on/off valve is determined through the sensor interface to the first on/off valve or the third Detected from a sensing value received from a pressure sensor corresponding to the on/off valve, the third on/off valve and the second on/off valve are closed according to the result of whether the hydrogen pipe between the first on/off valve and the third on/off valve is leaked An on/off control signal for opening an on/off valve between the third on/off valve and the second on/off valve among the on/off valves is set through the on/off valve interface, and whether the hydrogen pipe between the third on/off valve and the second on/off valve is leaked through the sensor interface through the sensing value received from the pressure sensor corresponding to the second on/off valve or the third on/off valve.

In the above-described hydrogen charging controller, further comprising a storage unit for storing data, the control unit collects the sensed values for specifying the pressure from each of the plurality of pressure sensors through the sensor interface according to the operation of the hydrogen charging station, and collects the collected plurality A reference pressure difference margin range based on the difference between the respective sensing values of the pressure sensor and the sensing values of the previous pressure sensor is stored in the configuration and storage unit, and after the reference pressure difference margin range is stored, it is retrieved from the pressure sensor through the sensor interface. The pressure sensor is diagnosed according to whether the difference between the received sensing value and the sensing value of the previous pressure sensor is within the stored reference pressure difference margin range.

The hydrogen charging controller and the hydrogen charging station according to the present invention as described above have the effect of improving the stability and efficiency of hydrogen charging.

In addition, the hydrogen charging controller and the hydrogen charging station according to the present invention as described above have the effect of dynamically finding the hydrogen leak location and confirming the hydrogen leak supplied for hydrogen charging.

In addition, the hydrogen charging controller and the hydrogen charging station according to the present invention as described above collect characteristic values of the sensors provided in the hydrogen charging station and predict and inform the abnormality of the sensor according to the collected characteristic values in advance for hydrogen charging without interruption Station operation is possible.

In addition, the hydrogen charging controller and the hydrogen charging station according to the present invention as described above analyze the operating characteristics of the heat exchanger according to the measured data and control the on/off of the heat exchanger according to the analyzed operating characteristics to be consumed in the hydrogen charging station. It has the effect of dramatically reducing power.

The effects obtainable in the present invention are not limited to the above-mentioned effects, and other effects not mentioned may be clearly understood by those of ordinary skill in the art from the following description. will be.

1 is a diagram illustrating an example of a hydrogen refueling station management system configured according to the present invention.
2 is a diagram illustrating an example configuration of a hydrogen charging station configured according to the present invention.
3 is a diagram illustrating a configuration example of a priority control panel configured according to the present invention.
4 shows an exemplary block diagram of a hydrogen charge controller.
5 is a diagram illustrating an exemplary control flow for detecting and positioning a hydrogen leak in a hydrogen pipe provided in a hydrogen charging station.
6 is a diagram illustrating an exemplary control flow for diagnosing sensors provided in a hydrogen charging station.
7 is a diagram illustrating an exemplary control flow for reducing power consumption of a hydrogen charging station.

The above-described objects, features and advantages will become more clear through the detailed description described below in detail with reference to the accompanying drawings, and accordingly, those of ordinary skill in the art to which the present invention pertains can understand the technical spirit of the present invention. can be easily implemented. In addition, in the description of the present invention, when it is determined that a detailed description of a known technology related to the present invention may unnecessarily obscure the gist of the present invention, the detailed description thereof will be omitted. Hereinafter, preferred embodiments according to the present invention will be described in detail with reference to the accompanying drawings.

1 is a diagram illustrating an example of a hydrogen refueling station management system configured according to the present invention.

According to FIG. 1 , the hydrogen charging station management system includes one or more hydrogen charging stations 10 , one or more administrator terminals 20 and a management server 30 , and includes a hydrogen charging station 10 , an administrator terminal 20 and a management server. 30 may be connected through a broadband network to transmit/receive various data.

The hydrogen charging station 10 is a charging station that can store hydrogen for charging and supply hydrogen for charging stored in a hydrogen vehicle. The hydrogen filling station 10 is equipped with a number of devices for the production, storage, cooling and charging of hydrogen for charging, and can transmit hydrogen for charging between devices through hydrogen pipes 900 that are resistant to high pressure.

The hydrogen charging station 10 is installed in a road, and is configured to provide hydrogen as a driving material to a hydrogen vehicle through a charging gun and to charge according to the hydrogen charging amount.

The hydrogen charging station 10 according to the present invention is configured to improve the stability and efficiency of the system. The hydrogen charging station 10 is configured to dramatically reduce power consumption required for detecting hydrogen leakage, detecting a leak location, detecting aging according to characteristics of various important sensors, and maintaining a specified temperature of hydrogen. The hydrogen charging station 10 according to the present invention will be described in more detail below in FIG. 2 .

The manager terminal 20 is a terminal used by the manager of the hydrogen charging station 10 . The manager terminal 20 may be, for example, a smartphone, a mobile phone, or a tablet PC. The specific manager terminal 20 is configured to manage the specific hydrogen charging station 10 . For example, the manager terminal 20 has an app or a web program and remotely manages the hydrogen charging station 10 through the management server 30 or receives a notification message from the management server 30 and sends it to a display or speaker. can be printed out.

The management server 30 manages the hydrogen charging station management system. The management server 30 maps one or more manager terminals 20 to the hydrogen recharging station 10, which is a management target, and configures the data received from the hydrogen recharging station 10 as a notification message to map the manager terminal ( 20) can be transmitted. The management server 30 may be an app server or a web server, and may be physically configured as a single server, a plurality of servers, or a cloud server.

A broadband network transmits and receives various types of data. The broadband network may transmit and receive communication packets including data. The broadband network may be composed of a combination of the Internet, a mobile communication network provided by a mobile communication service provider, and the like.

2 is a diagram illustrating an example configuration of a hydrogen charging station 10 configured according to the present invention.

According to FIG. 2 , the hydrogen filling station 10 includes a high pressure compressor 200 , a high pressure storage vessel 300 , a priority control panel 400 , a hydrogen filling controller 500 , a heat exchanger 600 and a pre-cooler ( 700 ), and charging hydrogen between the high pressure compressor 200 , the high pressure storage vessel 300 , the priority control panel 400 , the hydrogen charge controller 500 , the heat exchanger 600 and the pre-cooler 700 . and pipe control/monitor modules 800 for controlling the hydrogen transmission of the hydrogen pipe 900 and monitoring the state. According to a design example, the hydrogen charging station 10 may further include a reformer 100 or may receive hydrogen from an external hydrogen source through a hydrogen pipe 900 . In addition, the hydrogen charging station 10 may further include a hydrogen charging control device (not shown).

Looking at the main components of the hydrogen charging station 10, the reformer 100 produces hydrogen. The reformer 100 may produce hydrogen from CNG, LPG, water, and the like. For example, the reformer 100 may produce hydrogen and carbon dioxide through LPG combustion and discharge hydrogen and carbon dioxide. Alternatively, the reformer 100 may electrolyze water to produce hydrogen. According to a design example, the hydrogen charging station 10 may not include the reformer 100 in itself and may receive charging hydrogen from the outside through the hydrogen pipe 900 .

The high-pressure compressor 200 compresses hydrogen from the reformer 100 or the outside into high-pressure hydrogen and outputs the compressed hydrogen.

The high-pressure storage container 300 stores the hydrogen of the high-pressure compressor 200 in a tank. The high-pressure storage vessel 300 may include a plurality of hydrogen pressure tanks. The high-pressure storage container 300 may include a plurality of pressure tanks, and one or more pressure tanks may store the first high-pressure compressed hydrogen and the other pressure tank may store the second high-pressure compressed hydrogen. For example, the high-pressure storage container 300 is provided with a first pressure tank of 900 Bar, a second pressure tank of 900 Bar, and a third pressure tank of 450 Bar, and is controlled in the priority control panel 400 to be described later. Accordingly, hydrogen for charging can be output to the dispenser.

The priority control panel 400 controls the hydrogen output for charging from various pressure tanks of the high pressure storage vessel 300 . The priority control panel 400 may output hydrogen for charging from one of the pressure tanks to the dispenser according to the opening/closing control signal from the hydrogen charging controller 500 . The priority control panel 400 will be described in more detail with reference to FIG. 3 .

The heat exchanger 600 cools the hydrogen output through the charging gun (charging nozzle) of the dispenser in the hydrogen vehicle to a specified temperature. The heat exchanger 600 is hydrogen output through the charging gun, including the refrigerant and the refrigerant driving device, and is to cool the charging hydrogen flowing in through the priority control panel 400 to a specified temperature such as 40 degrees Celsius. can

The heat exchanger 600 according to the present invention is configured to receive a cooling on/off control signal from the hydrogen charging controller 500, and turns on the refrigerant driving device according to the cooling on control signal, thereby charging hydrogen introduced to a specified temperature. can be cooled, and the refrigerant driving device can be turned off according to the cooling off control signal. The heat exchanger 600 may be provided with a temperature sensor 803 therein to maintain a specified temperature of minus 40, minus 32 degrees or minus 25 degrees.

The pre-cooler 700 cools the hydrogen output to the charging gun of the dispenser again. The pre-cooler 700 may re-cool the hydrogen cooled by the heat exchanger 600 to a specified temperature (eg, minus 40 degrees, etc.) and output the cooled hydrogen for charging to the charging gun.

The hydrogen pipe 900 delivers hydrogen for charging for hydrogen refueling of a vehicle. The hydrogen pipe 900 may be a metal pipe capable of transporting charging hydrogen from one device constituting the hydrogen filling station 10 to another device or within the device. The hydrogen filling station 10 may be equipped with a plurality of hydrogen pipes 900 to transfer hydrogen for charging from one device to a subsequent device.

The pipe control/monitor module 800 is a module capable of enabling and controlling the status monitoring of the hydrogen pipe 900 . The pipe control/monitor module 800 is installed in the hydrogen pipe 900 installed between or within the device to control the opening and closing of the hydrogen pipe 900 and to sense temperature or pressure.

Each pipe control/monitor module 800 opens and closes a pressure sensor 801 sensing the pressure of the hydrogen pipe 900 , a temperature sensor 803 sensing the temperature of the hydrogen pipe 900 , and the hydrogen pipe 900 . It includes an opening/closing valve 805 that operates (opens or closes), and may further include a pressure gauge or a temperature gauge. In this way, the hydrogen charging station 10 includes pressure sensors 801 for sensing the pressure of the hydrogen pipe 900 in each of several hydrogen pipes 900 and a temperature sensor 803 for sensing the temperature of the hydrogen pipe 900 . and at least opening/closing valves 805 for opening and closing the hydrogen pipe 900 coupled to the pressure sensor 801 and the specific temperature sensor 803 .

The pressure and/or temperature sensed values of the pipe control/monitor module 800 may be output to the hydrogen charging controller 500 through a signal cable and enumerate the hydrogen pipe 900 according to an opening/closing control signal received through the signal cable i can close The on/off valve 805 may be, for example, a solenoid valve.

The hydrogen charging controller 500 monitors and controls the hydrogen charging station 10 . The hydrogen charging controller 500 may output hydrogen for charging to the charging gun through the control of the hydrogen pipe 900 between devices according to an input of a driver or the like.

In addition, the hydrogen charging controller 500 detects hydrogen leakage in several hydrogen pipes 900 through the control of the on-off valve 805 of the pipe control/monitor modules 800 and detects the leaked hydrogen pipe 900 or the hydrogen pipe. It is configured so that the position of 900 can be specified.

In addition, the hydrogen charging controller 500 collects a sensed value from the pressure sensor 801 and/or the temperature sensor 803 of the pipe control/monitor modules 800, and according to the characteristics of the sensed value, the pressure sensor 801 and/or Alternatively, the temperature sensor 803 may be diagnosed and diagnostic information may be transmitted to the hydrogen charging control device. In addition, the hydrogen charging controller 500 collects data by controlling the on/off of the heat exchanger 600 and controls the heat exchanger 600 based on the collected data to dramatically reduce power consumption during non-operation It is configured to provide cooling hydrogen stably during operating hours.

The hydrogen charging controller 500 will be described in detail below with reference to FIG. 4 .

The hydrogen filling control device monitors the hydrogen filling station 10 . The hydrogen charging control device may be connected to the hydrogen charging controller 500 through a wired network or a wireless network to receive the state or information from the hydrogen charging controller 500 and transmit the received state or information to the manager terminal 20 . For example, the hydrogen charging control device transmits the received status or information to the management server 30 through the broadband network, and the management server 30 configures a notification message indicating the received status or information through the web or app. It is transmitted to the manager terminal 20 . The hydrogen charging control device may be a personal computer or a dedicated computer.

In addition, the hydrogen charging station 10 further includes a temperature sensor for measuring the atmospheric temperature and a venting hydrogen pipe and a venting on/off valve for discharging the hydrogen remaining in the hydrogen pipe 900 to the outside. . The banting hydrogen pipe and the banting on/off valve are installed between the pipe control/monitor modules 800 (see FIG. 3, the display is omitted in FIG. 2) to discharge the remaining hydrogen between the pipe control/monitor modules 800 to the outside. can do.

Here, the hydrogen charging controller 500, the pre-cooler 700 and the charging gun and the pipe control/monitoring module 800 and the hydrogen pipe 900 between the pre-cooler 700 and the charging gun are coupled to the hydrogen vehicle. It is built into a dispenser that supplies hydrogen for charging.

3 shows an example of a priority control panel 400 of a hydrogen charging station 10 including a plurality of pipe control/monitor modules 800 and a plurality of hydrogen pipes 900, the example of FIG. As described above, the priority control panel 400 controls the output of hydrogen for charging of a selected pressure tank among several pressure tanks of the high-pressure storage container 300 to the dispenser.

In the example of the priority control panel 400 of FIG. 3 , the first pressure tank of the first pressure (eg 900 Bar) of the high-pressure storage vessel 300 is filled with a dispenser through a plurality of hydrogen pipes 900 . can be output (transmitted). A plurality of hydrogen pipes 900 and a plurality of pipe control/monitor modules 800 are provided between the first pressure tank and the dispenser.

In addition, the second pressure tank of the second pressure (eg, 900 Bar) of the high-pressure storage container 300 may output hydrogen for charging to the dispenser through the plurality of hydrogen pipes 900 . A plurality of hydrogen pipes 900 and a plurality of pipe control/monitor modules 800 are provided between the second pressure tank and the dispenser.

In addition, the third pressure tank of the third pressure (eg, 450 Bar) of the high-pressure storage container 300 may output hydrogen for charging to the dispenser through the plurality of hydrogen pipes 900 . A plurality of hydrogen pipes 900 and a plurality of pipe control/monitor modules 800 are provided between the third pressure tank and the dispenser.

The priority control panel 400 includes a banting hydrogen pipe (see ⓑ in FIG. 3) and a banting on/off valve (see ⓐ in FIG. 3) between the pipe control/monitor module 800 of the hydrogen pipe 900 that is directly connected. consists of including. The banting hydrogen pipe and the banting on/off valve may discharge the remaining hydrogen between the two pipe control/monitor modules 800 according to a control signal from the hydrogen charging controller 500 to the outside.

As can be seen from the example of FIG. 3 , the pipe control/monitor module 800 includes a pressure sensor 801 , a temperature sensor 803 , and an on/off valve 805 such as a solenoid valve. The sensed values of the pressure sensor 801 and the temperature sensor 803 are output to the hydrogen charging controller 500 through a separate wired cable, and the hydrogen charging controller 500 provides various pressures depending on the pressure state or internal state of the hydrogen vehicle. Controls the opening and closing of the opening/closing valve 805 of the pipe control/monitor module 800 of the priority control panel 400 to select one pressure tank among the tanks and output hydrogen for charging from the selected pressure tank to the dispenser.

For example, the hydrogen charging controller 500 opens the on-off valves 805 of ①, ②, and ⑦ of FIG. 3 and closes the remaining on-off valves 805 so that the charging hydrogen from the first pressure tank is output to the dispenser. It is possible to set the opening/closing control signals. Alternatively, so that the charging hydrogen from the second pressure tank is output to the dispenser, the hydrogen charging controller 500 opens the on/off valves 805 of ③, ④, ⑦ of FIG. 3 and closes the remaining on-off valves 805 Open/close control signals can be set. Alternatively, the hydrogen charging controller 500 opens the on-off valves 805 of ⑤, ⑥, and ⑦ of FIG. 3 and closes the remaining on-off valves 805 so that the charging hydrogen from the third pressure tank is output to the dispenser. Open/close control signals can be set.

The pipe control/monitor module 800 further includes a pressure gauge (Pressure Indicator), a pressure transmitter (Pressure Transmitter), a temperature gauge (Temperature Indicator) or a temperature transmitter (Temperature Transmitter) so that an administrator can check the pressure or temperature. have.

4 shows an exemplary block diagram of a hydrogen charge controller 500 .

The hydrogen charging controller 500 is embedded in the dispenser and may be embedded, for example, in the form of a built-in module including a board and components for control.

According to FIG. 4 , the hydrogen charging controller 500 includes a sensor interface 501 , an on/off valve interface 503 , a communication unit 505 , a storage unit 507 , an input unit 509 , an output unit 511 , and a heat exchanger interface. 513 and a control unit 515 . According to a design example, the hydrogen charging controller 500 may be configured by omitting some blocks of FIG. 4 or may further include other blocks not disclosed in FIG. 4 .

Referring to the hydrogen charging controller 500 through FIG. 4 , the sensor interface 501 receives sensing values from sensors installed in the hydrogen charging station 10 . The sensor interface 501 receives the sensing values of the pressure in the hydrogen pipe 900 corresponding to each of the pressure sensors 801 installed in the pipe control/monitor modules 800 through wired cables. The sensor interface 501 may receive analog sensing values through a wired signal line or digital sensing values through RS485 communication, respectively. In this way, the sensor interface 501 receives each sensed value from the pressure sensors 801 that sense the pressure of each of several hydrogen pipes 900 provided in the hydrogen charging station 10 .

In addition, the sensor interface 501 may further receive a sensing value from the temperature sensors 803 of the pipe control/monitor modules 800 that sense the temperature of each of several hydrogen pipes 900 of the hydrogen charging station 10, respectively. can The sensor interface 501 may receive analog sensing values through a wired signal line or digital sensing values through RS485 communication, respectively.

In addition, the sensor interface 501 may further receive a sensing value sensed from a temperature sensor sensing the ambient temperature outside the hydrogen charging station 10 through a wired signal line.

The opening/closing valve interface 503 sets opening/closing control signals of the plurality of opening/closing valves 805 of the pipe control/monitor modules 800 . The opening/closing valve 805 may open or close the hydrogen pipe 900 coupled to the pressure sensor 801 of the pipe control/monitor module 800 according to a set opening/closing control signal. The opening/closing valve 805 may be opened (opened) or closed (closed) according to a default setting, and the opening/closing valve interface 503 may output an opening/closing control signal when an opening/closing state different from the default setting is to be set. The on/off valve interface 503 may output a control signal (eg, a 12V level signal) through a wired signal line or output a digital control signal through communication such as RS485.

Heat exchanger interface 513 interfaces with heat exchanger 600 . The heat exchanger interface 513 outputs a control signal for turning on or off the cooling operation of the heat exchanger 600 as an analog or digital signal, and outputs a temperature signal that can specify the current temperature of the heat exchanger 600 as an analog or digital signal. receive as a signal. The heat exchanger interface 513 may output a 12V or 5V level control signal or receive a temperature signal through a wired cable.

The communication unit 505 transmits and receives data. The communication unit 505 includes a communication chipset or hardware logic for communication such as Wi-Fi or Ethernet to transmit various states or information to an external device (eg, a hydrogen charging control device) and control information received from an external device may be transmitted to the controller 515 .

The storage unit 507 stores data and programs. The storage unit 507 may collect and store various data including a mass storage medium such as a volatile memory, a non-volatile memory, and/or a hard disk. Also, the storage unit 507 stores a program executed by the control unit 515 . The program stored in the storage unit 507 includes a control program for controlling the hydrogen charging station 10 , a leak diagnosis program for diagnosing leakage of the hydrogen pipe 900 , and sensor diagnosis for predicting or diagnosing the state of the sensor, etc. Stores a program, an on-off control program for controlling the on-off of the heat exchanger 600, and the like. The sensor diagnosis program or the on/off control program may be a program configured to diagnose a sensor or control the heat exchanger 600 based on the collected big data, for example, by applying artificial intelligence technology.

The input unit 509 receives a user's input. The input unit 509 may receive a user input signal from an input (touch) panel or an input button of the dispenser, or receive an input that can be provided within the hydrogen charging controller 500 . According to a user input through the input unit 509 , the control unit 515 of the hydrogen charging controller 500 supplies hydrogen for charging to the hydrogen vehicle or performs diagnosis (eg, leak diagnosis) of the hydrogen charging station 10 . Or you can schedule a diagnosis.

The output unit 511 outputs a signal recognizable by the user. The output unit 511 outputs various signals from the control unit 515, including LCD or LED display modules, LED diodes, speakers, and the like, as visual signals or audible signals.

The controller 515 controls the hydrogen charging controller 500 . The control unit 515 includes one or more execution units for executing the program instructions to execute the program instructions in the storage unit 507 to control the hydrogen charging controller 500 and further the hydrogen charging station 10 . The control unit 515 may indicate or include a CPU, an MPU, a central processing unit, a microcomputer, and the like.

Briefly looking at the main control performed by the control unit 515 , the control unit 515 supplies high-pressure charging hydrogen to the hydrogen vehicle through the charging gun of the dispenser according to a user input through the input unit 509 . The controller 515 controls the on-off valve 805 of the pipe control/monitor modules 800 through the on-off valve interface 503 according to the pressure of the hydrogen tank sensed in the hydrogen vehicle to supply hydrogen for charging from a specific pressure tank. It can be supplied to hydrogen cars through a charging gun.

In addition, the control unit 515 detects a hydrogen leak in the hydrogen pipe 900 of the hydrogen charging station 10 according to an input through the input unit 509 or a reservation setting. The control unit 515 outputs an opening/closing control signal to the opening/closing valves 805 of the pipe control/monitor modules 800 through the opening/closing valve interface 503 and detecting hydrogen leakage according to the values sensed through the sensor interface 501. It is possible to detect whether or not the hydrogen pipe 900 or the location area where the leakage has occurred.

Details of the main control performed by the controller 515 will be described in detail below with reference to FIG. 5 .

FIG. 5 is a diagram illustrating an exemplary control flow for detecting and positioning a hydrogen leak in a hydrogen pipe 900 provided in the hydrogen charging station 10 .

The control flow in FIG. 5 is performed in the hydrogen charging station 10 and preferably by the control unit 515 of the hydrogen charging controller 500 that performs the leak diagnosis program of the storage unit 507 to control/monitor several pipe modules ( 800) through monitoring and control.

First, the hydrogen charging controller 500 recognizes the occurrence of a leak diagnosis event (S101). For example, the control unit 515 may recognize the occurrence of a leak diagnosis event according to an input of a leak diagnosis request through the input unit 509 or occurrence of a timer event at a preset time (eg, charging station closed time). have. The hydrogen charging controller 500 may perform a leak diagnosis during or immediately after the assembly process of the hydrogen charging station 10 , or may perform a leak diagnosis during a night outage or periodically according to a set cycle. Alternatively, the hydrogen charging controller 500 may perform leak diagnosis according to an input of an administrator.

According to the occurrence of the leak diagnosis event, the hydrogen charging controller 500 first sets the leak diagnosis range ( S103 ). For example, the control unit 515 recognizing the installation position of the pipe control/monitor module 800 on the hydrogen charging station 10 in advance leaks the range between the pipe control/monitor modules 800 at both ends. It can be initially set as the diagnostic range.

In the case of the example of FIG. 2 , the control unit 515 includes a pipe control/monitor module 800 of ⓐ (a pipe control/monitor module 800 located between the high-pressure compressor 200 and the high-pressure storage container 300) and ⓑ. The first leak diagnosis range may be set between the pipe control/monitor module 800 (the pipe control/monitor module 800 located between the charging gun of the dispenser and the pre-cooler 700) of the

As the diagnosis range is set, the hydrogen charging controller 500 charges hydrogen into the hydrogen pipes 900 within the diagnosis range ( S105 ). The hydrogen charging controller 500 (control unit 515 of) sets opening/closing control signals for opening the opening/closing valves 805 of all pipe control/monitor modules 800 within the diagnostic range through the opening/closing valve interface 503 and Hydrogen for charging is supplied to the hydrogen pipes 900 within the diagnostic range through the opened on/off valve 805 . Accordingly, hydrogen for charging may be supplied into the pipes of the hydrogen pipes 900 within the diagnostic range. At this time, the on-off valve 805 of the pipe control/monitor module 800 (refer to ⓑ in FIG. 2 ) of the end of the charging gun side may be set to a closed state.

After hydrogen charging for leak diagnosis, the hydrogen charging controller 500 closes both ends within the set diagnosis range (S107). The hydrogen charging controller 500 (control unit 515 of) transmits opening/closing control signals for closing (closing) the opening/closing valves 805 of the pipe control/monitor modules 800 at both ends through the opening/closing valve interface 503 set The hydrogen charging controller 500 (control unit 515 of) opens and closes all pipe control/monitor modules 800 (for example, refer to ⓒ in FIG. 2) between the pipe control/monitor modules 800 at both ends. The opening/closing control signal for opening the valve 805 (maintaining an open state) is continuously set and maintained.

After closing both ends of the set diagnosis range through the on/off valve 805 such as a solenoid valve, the hydrogen charging controller 500 detects leakage in the hydrogen pipes 900 within the set diagnosis range (S109).

The hydrogen charging controller 500 (control unit 515 of) transmits the sensing value of the pressure sensor 801 corresponding to the on/off valve 805 of the pipe control/monitor module 800 at both ends through the sensor interface 501. Leakage may be detected according to a change in the received sensing value. For example, the control unit 515 controls the on-off valve 805 of the pipe control/monitor module 800 at the end of the high-pressure compressor 200 (the on-off valve 805 between the high-pressure compressor 200 and the high-pressure storage container 300 ). ))), a sensed value is received through the sensor interface 501 a plurality of times for a specified time (eg, 10 seconds, etc.) from the pressure sensor 801 corresponding to the When the set threshold (or threshold ratio) is greater than or equal to the set threshold, it can be determined that there is a leak.

Alternatively, the control unit 515 is connected to the on/off valve 805 of the pipe control/monitor module 800 at the end of the charging gun side (the on/off valve 805 between the charging gun of the dispenser and the pre-cooler 700). Receives a sensed value from the corresponding pressure sensor 801 through the sensor interface 501 a plurality of times for a specified time (eg, 10 seconds, etc.), and sets a threshold (or rate of change) between the received sensed values ( or critical ratio) or more, it can be judged that leakage exists.

If the leak is not detected, the hydrogen charging controller 500 stores and outputs information according to the leak diagnosis (S111) and ends the control flow according to FIG. 5 (S150). For example, the hydrogen charging controller 500 (controller 515 of the) stores normal diagnosis information indicating that there is no leakage in the storage unit 507 together with the diagnosis time, and through the communication unit 505 , the manager terminal 20 ) to (eg, via the hydrogen charging control device and/or the management server 30 ), a notification message containing or indicating normal diagnostic information may be transmitted through the web or an app.

When a leak is detected in the currently set diagnostic range specified by the two opening/closing valves 805 at both ends, the hydrogen charging controller 500 divides the checked diagnostic range to specify the leak location (S113). For example, the hydrogen charging controller 500 (control unit 515 of) may divide the diagnosis range into at least two parts. The control unit 515 may divide into a specific diagnosis range by the preset pipe control/monitor modules 800 at both ends and the pipe control/monitor modules 800 positioned therebetween. As in the example of FIG. 2 , the controller 515 may divide the existing diagnosis range (ⓐ-ⓑ) into ⓐ-ⓑ and ⓐ-ⓑ.

When several hydrogen pipe paths exist at one end within the currently set diagnosis range, the diagnosis range in which each hydrogen pipe path is divided may be set. As in the example of FIG. 3 , when the priority control panel 400 is the currently set diagnosis range and there are several hydrogen pipe paths to the destination (dispenser), each of the hydrogen pipe paths may be set as a divided diagnosis range. In the example of FIG. 3 , the hydrogen charging controller 500 may set the ①-②-⑦ hydrogen pipe path, ③-④-⑦ hydrogen pipe path, and ⑤-⑥-⑦ hydrogen pipe path as three divided diagnostic ranges.

The hydrogen charging controller 500 charges hydrogen into one of the divided two or more diagnostic ranges (for example, refer to ⓐ-ⓒ or ⓒ-ⓑ in FIG. 2 ) ( S115 ). The hydrogen charging controller 500 (control unit 515 of the) transmits opening/closing control signals for opening the opening/closing valves 805 of all pipe control/monitor modules 800 within the divided diagnosis range through the opening/closing valve interface 503 Hydrogen for charging is supplied to the hydrogen pipes 900 within the divided diagnostic range through the set and opened on-off valve 805 . Accordingly, hydrogen for charging may be supplied into the tubes of the hydrogen pipes 900 within a divided diagnostic range. At this time, the opening/closing valve 805 of the pipe control/monitor module 800 (for example, see ⓒ in FIG. 2 ) at the end of the divided diagnosis range may be set to a closed state.

In the case where hydrogen above a specified pressure has already been filled in the leak detection process (refer to S109), the hydrogen filling process may be omitted. Alternatively, the hydrogen charging controller 500 may first empty the hydrogen filled in the hydrogen pipes 900 (via the venting hydrogen pipe and the venting on/off valve) and then recharge the hydrogen.

Thereafter, the hydrogen charging controller 500 closes both ends within the divided diagnostic range ( S117 ). The hydrogen charging controller 500 (control unit 515 of the divided diagnostic range) transmits opening/closing control signals for closing (closing) the opening/closing valves 805 of the pipe control/monitor modules 800 at both ends of the divided diagnostic range. (503) is set. The hydrogen charging controller 500 (control unit 515 of) controls all the pipe control/monitor modules 800 between the pipe control/monitor modules 800 at both ends (eg, ⓐ-ⓒ or ⓒ- in FIG. 2 ) The opening/closing control signal for opening (maintaining an open state) the opening/closing valve 805 of the modules 800) located between ⓑ is continuously set and maintained.

After blocking both ends (eg, ⓐ-ⓒ or ⓒ-ⓑ in FIG. 2 ) of the set diagnostic range through the on/off valve 805 such as a solenoid valve, the hydrogen charging controller 500 operates the hydrogen within the set diagnostic range. A leak in the pipes 900 is detected (S119).

The hydrogen charging controller 500 (control unit 515 of the divided diagnostic range) transmits the sensing value of the pressure sensor 801 corresponding to the on/off valve 805 of the pipe control/monitor module 800 at both ends of the divided diagnostic range to the sensor interface. It is received through 501 , and leakage may be detected according to a change in the received sensing value. For example, the control unit 515 controls the time ( For example, when a sensed value is received through the sensor interface 501 a plurality of times for 10 seconds, and the difference (or rate of change) between the received sensed values is greater than or equal to a set threshold (or threshold ratio), leakage exists. It can be judged that

Or (also), the control unit 515 is a time specified from the pressure sensor 801 corresponding to the on/off valve 805 of the pipe control/monitor module 800 of the stage ⓒ in the divided diagnosis range of ⓐ-ⓒ in FIG. If the sensed value is received through the sensor interface 501 multiple times for (eg, 10 seconds, etc.) and the difference (or rate of change) between the received sensing values is greater than or equal to a set threshold (or threshold ratio), leakage occurs. can be judged to exist.

If a leak is not detected in one of the divided diagnostic ranges, the hydrogen charging controller 500 sets another divided diagnostic range as a diagnostic range for leak detection (S121), and then sets another divided diagnostic range. Detects leakage in a range (refer to S115 to S119).

For example, the control unit 515, which did not detect a leak in ⓐ-ⓒ of FIG. 2, sets ⓒ-ⓑ of FIG. 2, which is another divided diagnostic range, as the diagnosis target range through the same process as described above, and is within ⓒ-ⓑ. Filling with hydrogen (S115), closing the on/off valve 805 at the end of ⓒ-ⓑ, and opening the on/off valve 805 between ⓒ-ⓑ (S117), and corresponding to the on/off valve 805 of the ⓒ and/or ⓑ stage According to the sensed value received from the pressure sensor 801 to detect whether leakage (S119).

When a leak is detected in one current divided diagnostic range, it is determined whether the leak detected divided diagnostic range is the minimum diagnostic range ( S123 ). The control unit 515 can determine whether the pipe control/monitor module 800 at both ends of the divided diagnosis range is a module adjacent to each other (there is no other pipe control/monitor module 800 in the middle) or the minimum diagnosis range. have.

If it is not the minimum diagnostic range, as described above, the hydrogen charging controller 500 divides the diagnostic range again targeting the diagnostic range in which the current leak is detected (S113), and fills the re-divided diagnostic range with hydrogen (S115) and It is possible to close (S117) and detect a leak (S119) by targeting the re-divided diagnostic range.

In the case of the minimum diagnosis range, the hydrogen charging controller 500 may generate and store leakage diagnosis information, output it to the manager terminal 20 (S125), and then terminate (S150). For example, the hydrogen charging controller 500 (controller 515 of the hydrogen charging controller 500 ) generates and stores leakage diagnosis information indicating the minimum diagnosis range in which hydrogen leakage occurs in the storage unit 507 together with the diagnosis time, and transmits the communication unit 505 to the storage unit 507 . A notification message including or indicating leak diagnosis information may be transmitted to the manager terminal 20 through the web or app (eg, through the hydrogen charging control device and/or the management server 30 ). The leak diagnosis information may include data (eg, an identifier, etc.) that can specify the hydrogen pipe 900 of the minimum diagnosis range in which the leak is detected or the pipe control/monitor modules 800 at both ends.

Through this process, the hydrogen charging controller 500 can efficiently detect and specify the hydrogen leakage during the manufacturing process of the hydrogen charging station 10, and dynamically specify the hydrogen leakage location during the operation after manufacturing, resulting in loss due to operation interruption. can reduce

6 is a diagram illustrating an exemplary control flow for diagnosing sensors provided in the hydrogen charging station 10 .

The diagnostic flow of FIG. 6 may be performed in the hydrogen charging controller 500 or the hydrogen charging control device capable of collecting the sensing values of the sensors 801 and 803 , and is preferably performed in the hydrogen charging controller 500 . The diagnostic flow of FIG. 6 may be performed independently of the control flow of FIG. 5 .

Hereinafter, a process performed by the hydrogen charging controller 500 (controller 515 of the hydrogen charging controller 500) will be described, and when it is performed in the hydrogen charging control device, the hydrogen charging control device is wired or wireless from the hydrogen charging controller 500, such as wired or wireless Wi-Fi or Ethernet. A sensed value may be received through communication of , and each process of FIG. 6 may be performed therefrom.

First, the hydrogen charging controller 500 collects the sensing values from the sensors according to the operation of the hydrogen charging station 10 during a designated collection period (eg, the first month after completion of the construction of the hydrogen charging station 10 ). The collected sensing values are mapped to identifiers of the sensors 801 and 803 and stored in the storage unit 507 (S201).

For example, the control unit 515 controls the pressure sensors 801 on the path of the charging gun from the pressure tank as hydrogen charging proceeds from the pressure tank of the high-pressure storage container 300 to the charging gun during the charging process of the hydrogen vehicle after initial establishment. The sensed values for specifying the pressure are collected from the sensor interface 501 through the sensor interface 501 , and the pressure data corresponding to the collected sensed values is mapped to the identifier of the pressure sensor 801 and stored in the storage unit 507 . The storage unit 507 may store the pressure sensor 801 identifier and pressure data pairs collected at several specific collection times during the collection period. For example, the storage unit 507 stores a plurality (as much as the number of sensed pressure sensors 801) of the pressure sensor 801 identifier and the collected pressure data pairs at one specific collection time and at another specific collection time. A plurality of pressure sensor 801 identifiers and pressure data pairs (as much as the number of sensed pressure sensors 801) are stored.

The controller 515 receives a current value, which is a sensed value, from each of the pressure sensors 801 through the sensor interface 501 , and matches the pressure data (pressure value) corresponding to the current value to the identifier of the pressure sensor 801 and stores it may be stored in unit 507 . The controller 515 may receive current values from various pressure sensors 801 at a specific time and store pressure data corresponding to the current values.

Furthermore, like the pressure sensor 801 , the controller 515 may match and store the temperature data corresponding to the sensed value with the identifier of the temperature sensor 803 for the temperature sensors 803 . Through this process, the hydrogen charging controller 500 may collect and store the characteristic values of the temperature sensor 803 or the pressure sensor 801 for an initially designated period.

As the collection period elapses or more than a specified number of data is collected, the hydrogen charging controller 500 configures a sensor margin of each sensor to be used for diagnosis of each sensor from the collected sensing value and stores it in the storage unit 507 (S203).

The control unit 515 controls each on a graph (a graph in which the pressure sensor 801 is a node and the hydrogen pipe 900 is an edge) that can know the connection relationship between the pressure sensors 801 installed in the hydrogen charging station 10. A reference pressure difference margin range is configured based on the difference between the sensing values of the pressure sensor 801 and the preceding (neighbor preceding) pressure sensor 801 . For example, in the collected pressure sensor 801 identifier and pressure data, the controller 515 directly precedes the pressure data of each pressure sensor 801 and the graph (in the direction of the reformer 100 ). ) calculates the pressure difference of each pressure sensor 801 through the average of the differences in the pressure data of the 801) and can be stored.

In the pressure sensors 801 in the hydrogen filling station 10 , even when a constant hydrogen pressure is applied from a pressure tank or the like, a constant pressure drop occurs according to the position of the pressure sensor 801 and the length of the hydrogen pipe 900 . Initially, the relative degree of pressure drop is stored as a reference pressure drop based on several collected data, and then aging, performance degradation, etc. of the pressure sensor 801 can be diagnosed according to the change in the degree of pressure drop. In this way, the hydrogen charging controller 500 (control unit 515 of) collects each of the sensed values (current values) of the pressure sensor 801 and the sensed value of the previous (neighboring) pressure sensor 801 on the graph. A reference pressure difference margin range for each pressure sensor 801 may be configured and stored based on the difference between the values (current values).

In addition, the control unit 515 may configure the reference temperature difference margin range from the connection relationship between the temperature sensors 803 installed in the hydrogen charging station 10 and store the reference temperature difference margin range through the same process as the configuration of the reference pressure difference margin range.

After the margin range for each sensor is configured, the hydrogen charging controller 500 receives and stores a sensed value from the sensor (S205), diagnoses the sensor from one or more stored sensed values, and outputs diagnostic information (S207). The hydrogen charging controller 500 periodically diagnoses the sensor according to a set cycle (1 day, 1 week, 10 days, etc.) or diagnoses the sensor at a preset time (eg, the charging station is closed time, the operation stop time) or the manager Sensor diagnosis is performed according to the input of

For example, the control unit 515 receives the sensing value from the pressure sensor 801 through the sensor interface 501 in the charging process of the vehicle during the specified monitoring period (1 day, 1 week, 10 days, etc.) and the pressure sensor ( The reference pressure difference margin range of the corresponding pressure sensor 801 is stored by matching the identifier of 801), and the difference between the sensing value of each pressure sensor 801 and the sensing value of the previous (neighboring) pressure sensor 801 on the graph is set. Each pressure sensor 801 may be diagnosed according to the determination of internal perception.

During the charging process of the hydrogen vehicle during the designated monitoring period, the control unit 515 receives a current value from each of the pressure sensors 801 through the sensor interface 501, converts the current value into corresponding pressure data, and converts the current value into the pressure sensor ( 801) and stored. The control unit 515 calculates the average of the difference in pressure corresponding to the current value of each pressure sensor 801 and the previous (neighboring) pressure sensor 801 on the graph after the lapse of the specified monitoring period, and the calculated average pressure difference is set The corresponding pressure sensor 801 may be diagnosed whether it is within the reference pressure difference margin range.

The control unit 515 may configure diagnostic information that can specify one or more pressure sensors 801 having a diagnostic abnormality out of the margin range and transmit it to the hydrogen charging control device through the communication unit 505 . For example, the diagnostic information may include data indicating an identifier or a location of the pressure sensor 801 that is the most leading toward the reformer 100 in the graph among the pressure sensors 801 out of the margin range.

Also, the controller 515 may diagnose and output diagnostic information on the temperature sensors 803 installed in the hydrogen charging station 10 in the same manner as in the process of diagnosing and outputting the pressure sensor 801 .

The hydrogen charging control device that has received the diagnosis information may transmit a diagnosis notification message indicating the diagnosis information to the manager terminal 20 through the web or app through the management server 30 . In addition, the hydrogen charge control device receives the sensed values sensed by the pressure sensors 801 and the temperature sensors 803 from the hydrogen charge controller 500 , and senses the pressure sensors 801 and the temperature sensors 803 . It is possible to analyze and predict the state of the hydrogen charging station 10 from the values according to artificial intelligence technology and transmit a state alarm message indicating the analyzed state to the manager terminal 20 through the management server 30 . The manager terminal 20 may receive and output a status notification message through a web or an app.

The control flow of FIG. 6 may be performed through a sensor diagnosis program stored in the hydrogen charging controller 500, and the sensor diagnosis program may be a program to which artificial intelligence technology is applied.

7 is a diagram illustrating an exemplary control flow for reducing power consumption of the hydrogen charging station 10 .

The diagnostic flow of FIG. 7 may be performed by the hydrogen charging controller 500 (controller 515 of FIG. 7 ), and the control flow of FIG. 7 may be performed independently of the control flow of FIGS. 5 and 6 .

First, the hydrogen charging controller 500 may specify a correlation between the ambient temperature outside the hydrogen charging station 10 and the return to a specified temperature (eg, minus 40 degrees) set in the heat exchanger 600 . The correlation data is collected by controlling the heat exchanger 600 (S301).

For example, the control unit 515 may be configured through the heat exchanger interface 513 at the first time (eg, 10 pm) during the downtime (eg, from 10 pm to 6 am the next day, etc.) Outputs a cooling off control signal to turn off the heat exchanger 600 and heats through the heat exchanger interface 513 at a safe second time (eg, 12:00 pm, etc.) for returning to a specified temperature during the downtime. Outputs a cooling-on control signal for turning on the exchanger (600).

When the cooling-on control signal is output, the controller 515 receives a sensed value from a temperature sensor that measures the ambient temperature through the sensor interface 501 and converts it into the ambient temperature. In addition, the control unit 515 senses the temperature (initial temperature) of the heat exchanger 600 when the cooling-on control signal is output through the temperature signal of the heat exchanger interface 513, and the temperature changed after the initial temperature and output time. and store the time. The control unit 515 detects the time when the heat exchanger 600 returns to the specified temperature through the temperature signal of the heat exchanger interface 513 and cools according to the difference between the output time and the return time and the difference between the initial temperature and the specified temperature Calculate the rate of change of temperature. The control unit 515 may store the cooling temperature change rate in the storage unit 507 by mapping the cooling temperature change rate to the atmospheric temperature.

In this way, the control unit 515 may collect and store data capable of specifying a correlation between each of the atmospheric temperatures and the return to a specified temperature through cooling on/off control several times over several different days. The control unit 515 collects and stores correlation data at different atmospheric temperatures for a sufficient correlation collection period (eg, one month, etc.), and controls the heat exchanger 600 based on this to dramatically reduce power consumption can be reduced to

The hydrogen charging station 10 is normally shut down at night, but the existing heat exchanger 600 continues to run at night to meet the specified temperature during operating hours. The hydrogen charging station 10 according to the present invention uses big data collected by reflecting the external environment at the installed location to dramatically reduce power consumption by controlling the heat exchanger 600 tailored to the environment of each hydrogen charging station 10 configured to be able to

After the lapse of the correlation collection period, the hydrogen charge controller 500 (controller 515 of) controls the heat exchanger interface 513 at a first time of the shutdown time (eg, at 10:00, the shutdown start time). ) to output a cooling off control signal to the heat exchanger 600 (S303).

The hydrogen charging controller 500 (controller 515 of) periodically receives a temperature signal through the heat exchanger interface 513 after the first time, and receives the current temperature of the heat exchanger 600 corresponding to the temperature signal and the sensor interface ( 501) to determine the external ambient temperature. The hydrogen charging controller 500 (control unit 515 of) uses correlation data corresponding to the sensed atmospheric temperature or correlation data within a certain range to the sensed atmospheric temperature and the current heat exchanger 600 temperature using 600) to determine the time to turn on.

The hydrogen charging controller 500 (control unit 515 of) outputs a cooling-on control signal to the heat exchanger 600 through the heat exchanger interface 513 at the second time to turn on the heat exchanger 600 ( S305 ) . Accordingly, the heat exchanger 600 is driven to return to a specified temperature (eg, minus 40 degrees Celsius).

In addition, after the output of the cooling-on control signal, the hydrogen charging controller 500 (controller 515 of the) receives the temperature signal multiple times (multiple times according to a specified period) through the heat exchanger interface 513 and returns to the specified temperature. The return time is determined, and the difference between the return time and the output time of the cooling-on control signal and the difference between the specified temperature and the start temperature (the temperature of the output time of the cooling-on control signal) is determined according to the external ambient temperature, and the heat exchanger (600) The second time to turn on is tuned (S307).

The control unit 515 maps the cooling temperature change rate calculated according to the difference between the return time and the output time and the difference between the designated temperature and the start temperature to the recognized atmospheric temperature and stores it in the storage unit 507 or the cooling mapped to the existing atmospheric temperature. By reflecting the current cooling temperature conversion rate to the temperature change rate, it is possible to recalculate the cooling temperature change rate and tune the second time to turn on.

Power consumption of the heat exchanger 600 can be remarkably reduced through the execution of the on-off control program to which the artificial intelligence technology is applied based on the collected big data in the control unit 515 . Through this process, it is possible to efficiently save energy and operate the hydrogen charging station 10 stably while adapting to the individual external environment of the hydrogen charging station 10 .

Through the control flow of FIGS. 5 to 7 , the airtightness of each hydrogen pipe 900 and the presence or absence of malfunctions and performance of various sensors can be periodically or self-diagnosed during the charging station's off-hours. It is possible to operate a hydrogen refueling station without interruption due to

The present invention described above can be substituted, modified, and changed in various ways without departing from the technical spirit of the present invention for those of ordinary skill in the art to which the present invention pertains. It is not limited by the drawings.

10: hydrogen filling station
100: reformer
200: high pressure compressor
300: high pressure storage container
400: priority control panel
500: hydrogen charging controller
501: sensor interface 503: on/off valve interface
505: communication unit 507: storage unit
509: input unit 511: output unit
513: heat exchanger interface 515: control unit
600: heat exchanger
700: pre-cooler
800: pipe control/monitor module
801: pressure sensor 803: temperature sensor
805: on-off valve
900: hydrogen pipe
20: administrator terminal
30: management server

Claims (10)

A hydrogen filling station comprising:
a plurality of hydrogen pipes for delivering hydrogen for charging for hydrogen refueling of automobiles;
a plurality of pressure sensors for sensing the pressure of each of the plurality of hydrogen pipes;
A plurality of on-off valves, each on-off valve comprising: a plurality of on-off valves capable of opening and closing a hydrogen pipe coupled to the plurality of pressure sensors;
a heat exchanger for cooling the hydrogen output through the charging gun to a specified temperature; and
A hydrogen charging controller for detecting hydrogen leakage in the plurality of hydrogen pipes through control of the plurality of on-off valves and sensing values from the plurality of pressure sensors and performing on or off control of the heat exchanger;
The hydrogen charge controller performing on or off control of the heat exchanger is capable of specifying the correlation between the ambient temperature and the return to the specified temperature through cooling on/off control over a plurality of times on different days for the heat exchanger. Data is collected, and a cooling-off control signal is output to the heat exchanger at a first time of the operation downtime of the hydrogen charging station, and a cooling-off control signal is output to the heat exchanger at a second time determined according to the collected correlation data and external ambient temperature. Outputting a cooling-on control signal and tuning a second time determined according to the external atmospheric temperature according to the time to return to the specified temperature after the second time,
hydrogen filling station. According to claim 1,
In order to detect hydrogen leakage in the plurality of hydrogen pipes, the hydrogen filling controller controls supply of hydrogen for charging to the plurality of hydrogen pipes and closes a first on/off valve and a second on/off valve among the plurality of on/off valves and determining whether a hydrogen pipe between the first on-off valve and the second on-off valve is leaked in a state in which a third on-off valve between the first on-off valve and the second on-off valve among the plurality of on-off valves is opened. Sensing through a pressure sensor corresponding to the 1 on-off valve or the second on-off valve,
hydrogen filling station. 3. The method of claim 2,
The hydrogen filling controller detecting the hydrogen leakage between the first on-off valve and the second on-off valve closes the first on-off valve and the third on-off valve, and the first on-off valve among the plurality of on-off valves; A pressure sensor corresponding to the first on-off valve or the third on-off valve is used to detect whether the hydrogen pipe between the first on-off valve and the third on-off valve is leaking in a state in which the on-off valve between the third on-off valves is opened. to close the third on-off valve and the second on-off valve according to a result of whether the hydrogen pipe between the first on-off valve and the third on-off valve is leaked, and the third on-off valve among the plurality of on-off valves A pressure corresponding to the second on-off valve or the third on-off valve to determine whether the hydrogen pipe between the third on-off valve and the second on-off valve is leaking in a state in which the on-off valve between the valve and the second on-off valve is opened detected by the sensor,
The first on-off valve is an on-off valve capable of opening and closing a hydrogen pipe between the high-pressure compressor of the hydrogen charging station and the high-pressure storage container,
The second opening/closing valve is an opening/closing valve capable of opening and closing a hydrogen pipe between a charging gun of a dispenser for hydrogen charging of a vehicle of the hydrogen charging station and a pre-cooler,
The hydrogen charge controller is built into the dispenser,
hydrogen filling station. According to claim 1,
The hydrogen filling controller collects sensed values for specifying pressure from each of the plurality of pressure sensors according to the operation of the hydrogen filling station, and collects the sensed values of each of the plurality of pressure sensors and the sensed values of the previous pressure sensor and After configuring the reference pressure difference margin range based on the difference of to diagnose the pressure sensor according to;
hydrogen filling station. 5. The method of claim 4,
Hydrogen charging control device for monitoring the hydrogen charging station; further comprising,
The hydrogen charging controller collects current values that are sensing values for specifying pressure from each of the plurality of pressure sensors according to the operation of the hydrogen charging station, and collects current values of each of the plurality of pressure sensors and the current of the previous pressure sensor A standard pressure difference margin range is configured based on the difference from the values, and the pressure difference according to the difference between the current value received from the pressure sensor and the current value of the previous pressure sensor after the configuration of the reference pressure difference margin range of the pressure sensor is the reference pressure difference Diagnose the pressure sensor according to the determination of whether it is within the margin range and transmit diagnostic information to the hydrogen charging control device,
The hydrogen charging control device transmits a diagnosis notification message indicating diagnosis information according to the diagnosis of the pressure sensor to the manager terminal,
hydrogen filling station. delete According to claim 1,
a plurality of temperature sensors for sensing the temperature of each of the plurality of hydrogen pipes; and
Hydrogen charging control device for monitoring the hydrogen charging station; further comprising,
The hydrogen charge controller transmits the sensing values of the plurality of pressure sensors and the plurality of temperature sensors to the hydrogen charge control device,
The hydrogen charging control device analyzes the state of the hydrogen charging station from the sensing values of the plurality of pressure sensors and the plurality of temperature sensors, and transmits a status notification message indicating the analyzed state to the manager terminal through an app or web. ,
hydrogen filling station. a sensor interface for receiving sensing values from a plurality of pressure sensors for sensing pressures of a plurality of hydrogen pipes provided in the hydrogen charging station;
an opening/closing valve interface for setting an opening/closing control signal to a plurality of opening/closing valves capable of opening and closing a hydrogen pipe coupled to each of the plurality of pressure sensors;
a heat exchanger interface for outputting a control signal for turning on or off the operation of the heat exchanger for cooling the hydrogen output through the charging gun to a specified temperature; and
A control unit for detecting hydrogen leakage in the plurality of hydrogen pipes through an opening/closing control signal set to each of the plurality of on-off valves and sensing values from the plurality of pressure sensors and performing on or off control of the heat exchanger; do,
The control unit for performing on or off control of the heat exchanger is configured to perform cooling on/off control over a plurality of times on different days for the heat exchanger through the heat exchanger interface. Correlation between the standby temperature and return to the specified temperature. to collect data that can specify Outputting a cooling-on control signal to the heat exchanger and tuning a second time determined according to the external atmospheric temperature according to the time to return to the specified temperature after the second time,
Hydrogen charging controller. 9. The method of claim 8,
The control unit for detecting the hydrogen leakage between the first on-off valve and the second on-off valve among the plurality of on-off valves,
closing a third on-off valve and the first on-off valve between the first on-off valve and the second on-off valve, and opening an on-off valve between the first on-off valve and the third on-off valve among the plurality of on-off valves to set an opening/closing control signal for the on/off valve interface through the opening/closing valve interface, and determining whether the hydrogen pipe between the first opening/closing valve and the third opening/closing valve is leaking through the sensor interface corresponding to the first opening/closing valve or the third opening/closing valve Detected from the sensing value received from the pressure sensor,
The third on-off valve and the second on-off valve are closed according to a result of whether the hydrogen pipe between the first on-off valve and the third on-off valve is leaked, and the third on-off valve and the third on-off valve among the plurality of on-off valves An opening/closing control signal for opening the opening/closing valve between the two opening/closing valves is set through the opening/closing valve interface, and whether the hydrogen pipe between the third opening/closing valve and the second opening/closing valve is leaking is determined through the sensor interface. Detected from the sensing value received from the pressure sensor corresponding to the on-off valve or the third on-off valve,
Hydrogen charging controller. 9. The method of claim 8,
A storage unit for storing data; further comprising,
The control unit collects sensing values for specifying a pressure from each of the plurality of pressure sensors through the sensor interface according to the operation of the hydrogen charging station, and the collected sensing values of each of the plurality of pressure sensors and the sensing of the previous pressure sensor A reference pressure difference margin range based on the difference between the values is configured and stored in the storage unit, and after the reference pressure difference margin range is stored, the sensed value received from the pressure sensor through the sensor interface and the sensed value of the previous pressure sensor Diagnosing the pressure sensor according to whether the difference of is within the stored reference pressure difference margin range,
Hydrogen charging controller.

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