KR20230162313A - Fuel cell system and operation method of the same - Google Patents

Abstract

According to an embodiment disclosed in this document, a fuel cell system includes a plurality of hydrogen sensors that acquire hydrogen detection information of a vehicle fuel cell; and a detection unit that determines whether hydrogen is leaking based on the hydrogen detection information and transmits the determination result to a control unit, wherein the control unit controls the operation of the fuel cell based on the determination result. .

Description

Fuel cell system and its operating method {FUEL CELL SYSTEM AND OPERATION METHOD OF THE SAME}

Embodiments disclosed in this document relate to a fuel cell system and a method of operating the same.

A fuel cell system can generate electrical energy using a fuel cell stack. For example, if hydrogen is used as a fuel for a fuel cell stack, it can be an alternative to solving global environmental problems, so continuous research and development is being conducted on fuel cell systems. Vehicles using a fuel cell system can ensure safety by detecting the hydrogen leak by combining signals from the hydrogen leak detection sensor and surrounding electronic devices when a hydrogen leak occurs in the fuel cell system while power is supplied to the vehicle and controller.

Since the fuel cell system generates electrical energy through a chemical reaction between hydrogen and oxygen, safety issues such as explosion due to hydrogen leakage must be considered. Therefore, it is necessary to be able to effectively detect hydrogen leaks from the fuel cell system, and in particular, a method is needed to effectively detect hydrogen leaks before and after driving.

However, general hydrogen leak detection technology cannot detect hydrogen leaks unless the vehicle and controller are powered and driven when a hydrogen leak occurs. In addition, after hydrogen leaked due to an irreversible phenomenon, there was a problem that the already leaked hydrogen could not be detected even if power was supplied to the controller.

To solve this problem, a non-powered hydrogen leak detection method has been proposed that uses a chemical sensor to detect hydrogen leaks by changing the color of the sample when exposed to hydrogen. However, this method not only requires visual inspection, but also causes hydrogen to leak. There was a problem in that the sensor had to be replaced whenever possible.

According to an embodiment disclosed in this document, a fuel cell system includes a plurality of hydrogen sensors that acquire hydrogen detection information of a vehicle fuel cell; and a detection unit that determines whether hydrogen is leaking based on the hydrogen detection information and transmits the determination result to a control unit, wherein the control unit controls the operation of the fuel cell based on the determination result. .

According to an embodiment, the determination result includes notification information, and the detection unit may generate the notification information when it is determined that hydrogen has leaked.

According to an embodiment, when the notification information is received while the fuel cell is in an off state, the control unit may control the vehicle to stop the starting sequence when the vehicle is ignited.

According to an embodiment, the control unit may control the hydrogen valve to turn off when the notification information is received while the fuel cell is in an on state.

According to an embodiment, the control unit and the sensing unit may communicate based on CAN communication.

According to an embodiment, the fuel cell system may further include a battery management device that obtains status information of a battery that supplies power to the fuel cell and controls operation of the battery based on the status information.

According to an embodiment, the state information may include at least one of voltage and charging rate.

According to an embodiment, the battery management device controls the battery to stop supplying power to the sensing unit when at least one of the voltage is less than the first value and the charging rate is less than the second value. can do.

According to an embodiment, the sensing unit includes a battery supplying power; a regulator that receives power from the battery and performs voltage transformation; a communication unit communicating with the control unit; A sensor unit including a plurality of connectors and a plurality of sensor ICs detachable from the plurality of connectors and connected to the plurality of hydrogen sensors to obtain status information of the plurality of hydrogen sensors; and a controller that generates the determination result based on the hydrogen detection information and determines whether the plurality of hydrogen sensors are damaged based on the status information.

According to an embodiment disclosed in this document, a method of operating a fuel cell system includes obtaining hydrogen detection information of a vehicle fuel cell; determining whether hydrogen is leaking based on the hydrogen detection information and transmitting the determination result to a control unit; And it may include the control unit controlling the operation of the fuel cell based on the determination result.

The fuel cell system according to the embodiments disclosed in this document can effectively detect hydrogen leaks not only during the operation of the vehicle, but also before and after the vehicle is driven. Through this, the accuracy of hydrogen leak certification can be improved and the laws related to the safety of hydrogen use can be strengthened.

Additionally, the fuel cell system according to the embodiments disclosed in this document enables emergency response by stopping the fuel cell starting sequence when a hydrogen leak is detected before operation.

Additionally, the fuel cell system according to the embodiments disclosed in this document supplies power to the sensing unit with a low-voltage battery and enables efficient power use by separating the functions of the sensing unit and the control unit.

In addition, various effects that can be directly or indirectly identified through this document may be provided.

1 is a block diagram of a fuel cell system according to an embodiment disclosed in this document.
Figure 2 is a diagram showing a battery management device for a fuel cell system according to an embodiment disclosed in this document.
Figure 3 is a diagram showing an example of a plurality of hydrogen sensors according to an embodiment disclosed in this document.
Figure 4 is a diagram showing the configuration of a sensing unit according to an embodiment disclosed in this document.
Figure 5 is a flowchart for explaining a method of operating a fuel cell system according to an embodiment disclosed in this document.
Figure 6 is a diagram showing the operation logic of a fuel cell system according to another embodiment disclosed in this document.

Hereinafter, various embodiments of the present invention are described with reference to the accompanying drawings. However, this is not intended to limit the present invention to specific embodiments, and should be understood to include various modifications, equivalents, and/or alternatives to the embodiments of the present invention.

In this document, the singular form of a noun corresponding to an item may include one or plural items, unless the relevant context clearly indicates otherwise. In this document: “A or B”, “at least one of A and B”, “at least one of A or B”, “A, B or C”, “at least one of A, B and C” and “A, Each of phrases such as “at least one of B, or C” may include any one of the items listed together in the corresponding phrase, or any possible combination thereof. Terms such as "first", "second", or "first" or "second" may be used simply to distinguish one component from another, and to refer to that component in other respects (e.g., importance or order) is not limited. One (e.g., first) component is said to be “coupled” or “connected” to another (e.g., second) component, with or without the terms “functionally” or “communicatively.” When mentioned, it means that any of the components can be connected to the other components directly (e.g. wired), wirelessly, or through a third component.

Each component (eg, module or program) described in this document may include singular or plural entities. According to various embodiments, one or more of the corresponding components or operations may be omitted, or one or more other components or operations may be added. Alternatively or additionally, multiple components (eg, modules or programs) may be integrated into a single component. In this case, the integrated component may perform one or more functions of each component of the plurality of components in the same or similar manner as those performed by the corresponding component of the plurality of components prior to the integration. . According to various embodiments, operations performed by a module, program, or other component may be executed sequentially, in parallel, iteratively, or heuristically, or one or more of the operations may be executed in a different order, omitted, or , or one or more other operations may be added.

As used in this document, the term "module", or "part" may include a unit implemented in hardware, software, or firmware, and may include terms such as logic, logic block, component, or circuit. Can be used interchangeably. A module may be an integrated part or a minimum unit of the parts or a part thereof that performs one or more functions. For example, according to one embodiment, the module may be implemented in the form of an application-specific integrated circuit (ASIC).

Various embodiments of this document may be implemented as software (e.g., a program or application) including one or more instructions stored in a storage medium (e.g., memory) that can be read by a machine. For example, the processor of the device may call at least one instruction among one or more instructions stored from a storage medium and execute it. This allows the device to be operated to perform at least one function according to the at least one instruction called. The one or more instructions may include code generated by a compiler or code that can be executed by an interpreter. A storage medium that can be read by a device may be provided in the form of a non-transitory storage medium. Here, 'non-transitory' simply means that the storage medium is a tangible device and does not contain signals (e.g. electromagnetic waves). This term refers to cases where data is stored semi-permanently in the storage medium. There is no distinction between temporary storage cases.

1 is a block diagram of a fuel cell system according to an embodiment disclosed in this document.

Referring to FIG. 1 , the fuel cell system 1 may include a plurality of hydrogen sensors 100, a detection unit 200, and a control unit 300.

According to the embodiment, the plurality of hydrogen sensors 100 may obtain hydrogen detection information of the vehicle fuel cell 10. The hydrogen sensor 100 may include, but is not limited to, a leak detection sensor, a concentration sensor, a pressure sensor, a mass sensor, or a flow sensor. In addition, the hydrogen sensor 100 may include sensors that operate in various ways, such as gas heat conduction type, hot wire semiconductor type, contact combustion type, optical type, hydrogen FET (Field Effect Transistor) type, and film thin film type. At this time, hydrogen detection information by the hydrogen sensor 100 may include hydrogen concentration, temperature, pressure, mass, etc. As an example, the hydrogen sensor 100 can detect the concentration of hydrogen and can be used by adjusting the detection limit according to the hydrogen concentration. For example, the hydrogen sensor 100 may use a sensor that detects hydrogen when the hydrogen concentration is 100 ppm or more.

The detection unit 200 may determine whether hydrogen is leaking based on the hydrogen detection information and transmit the determination result to the control unit 300. As described above, the hydrogen sensor 100 can determine whether hydrogen is detected based on the hydrogen concentration, and if the hydrogen concentration exceeds the detection limit, the hydrogen sensor 100 detects it, and the detection unit 200 detects the hydrogen concentration. It is possible to determine whether there is a leak or not. For example, the detection unit 200 may determine that hydrogen has leaked when the concentration of hydrogen detected by the hydrogen sensor 100 is 100 ppm or more. Additionally, the detection unit 200 may determine that hydrogen has leaked when hydrogen of a certain concentration or higher is detected in any one of the plurality of hydrogen sensors 100. In this case, any one of the plurality of hydrogen sensors 100 You can obtain information on whether hydrogen above a certain concentration has been detected. In addition, the detection unit 200 may determine whether hydrogen is leaking based on the pressure, mass, etc. of hydrogen detected by the hydrogen sensor 100.

According to an embodiment, the determination result may include not only whether or not there is a hydrogen leak, but also notification information, a DTC code, and information on which sensor among the plurality of hydrogen sensors 100 detected hydrogen. As an example, the detection unit 200 may determine whether there is a leak based on detection information from the hydrogen sensor 100 and generate the determination result as a digital signal. For example, the detection unit 200 may generate a digital signal of 1 when it is determined that hydrogen has leaked, and 0 when it is determined that hydrogen has not leaked, and transmit it to the control unit 300.

According to an embodiment, the detection unit 200 may generate notification information when it is determined that hydrogen has leaked. For example, the detection unit 200 may not generate a separate notification when hydrogen has not leaked, but may generate notification information only when it is determined that hydrogen has leaked. Notification information may be expressed as sound, text, vibration, optical patterns, etc., and may include a DTC code. At this time, the fuel cell system 1 may include a sound device, a display device, etc. for outputting notification information. When the detection unit 200 generates notification information, it may transmit a determination result including the notification information to the control unit 300.

The sensing unit 200 and the control unit 300 can communicate by wire or wirelessly, and can communicate based on various communication methods such as RF communication, Bluetooth communication, and WI-FI communication. According to one embodiment, the sensing unit 200 and the control unit 300 may communicate based on CAN communication.

According to the embodiment, the control unit 300 may control the operation of the fuel cell 10 based on the determination result. For example, the control unit 300 may include a FUEL CELL CONTROLLING UNIT (FCU) for controlling the fuel cell 10. In order to increase the efficiency of power consumption and enable a quick response when receiving a decision result from the detection unit 200, the control unit 300 only provides notifications such as sleep mode or power saving mode before or after driving the vehicle. It can operate to receive. For example, the control unit 300 may include a sleep mode (or power saving mode) and a control mode, and operates in the sleep mode before or after driving the vehicle, when receiving notification information or while driving the vehicle. It can be operated by switching to control mode.

According to an embodiment, when notification information is received while the fuel cell 10 is in an off state, the control unit 300 may control the vehicle to stop the starting sequence when the vehicle is ignited. When receiving notification information from the sensing unit 200, the control unit 300 can operate by switching from a sleep mode to a control mode, and can control the start sequence to be stopped when the vehicle is started by the user. At this time, the off state of the fuel cell 10 may include a state in which the fuel cell 10 is not powered and a state before or after driving the vehicle. If the detection unit 200 determines that hydrogen has leaked when the vehicle is not being driven (for example, before or after the vehicle is driven), hydrogen is present inside the fuel cell 10 and sparks are generated during the ignition process. Safety risks such as hydrogen explosion may occur. Accordingly, the control unit 300 can control to stop the starting sequence to prevent any danger. At this time, the stopping point of the startup sequence of the control unit 300 may be set differently depending on the design. For example, the control unit 300 may stop the ignition process of various electronic devices constituting the fuel cell system 1 after the battery and FCU are ignited during the starting sequence.

According to an embodiment, the control unit 300 may control the hydrogen valve to turn off when notification information is received while the fuel cell 10 is in an on state. At this time, the detection unit 200 can determine which sensor among the plurality of hydrogen sensors 100 has detected hydrogen and confirm at which location in the fuel cell 10 hydrogen has leaked. The control unit 300 may receive a determination result including the hydrogen leak location from the detection unit 200 and turn off the hydrogen valve close to the leak location or turn off all hydrogen valves sequentially. For example, the hydrogen valve may include a hydrogen tank valve, a hydrogen purge valve, etc., and when hydrogen is detected in the hydrogen tank from the detection unit 200, the hydrogen tank valve may be turned off or the hydrogen tank valve and the hydrogen purge valve may be turned off. It can be turned off sequentially. At this time, turning off the valve may mean closing the valve by adjusting the opening degree of the valve. When the hydrogen valve is turned off, the supply of hydrogen to the fuel cell is stopped, and power generation by the fuel cell is stopped. However, the required power can be supplied by the high-voltage battery included with the fuel cell to maintain operation.

Figure 2 is a diagram showing a battery management device for a fuel cell system according to an embodiment disclosed in this document.

Referring to FIG. 2, the fuel cell system 1 may further include a battery management device 11.

According to an embodiment, the battery management device 11 may obtain status information of the battery that supplies power to the fuel cell 10 and control the operation of the battery 400 based on the status information. At this time, the battery status information may include temperature, voltage, current, and charge rate (State of Charge, SOC).

According to an embodiment, the battery management device 11 is configured to detect the battery 400 when at least one of the case where the voltage of the battery 400 is less than the first value or the charging rate is less than the second value. ) can be controlled to stop power supply. At this time, the first value may be a preset value for stable operation of the battery 400, and may be set to 9V, for example. If the voltage of the battery 400 is less than the first value, the battery management device 11 may determine that an abnormality has occurred in the battery 400, and may control the battery 400 not to supply power to the detection unit 200 in response. there is. Additionally, the second value may be a preset value based on the type of vehicle, purpose of operation, etc., and may be set to 90%, for example. At this time, the battery management device 11 may use a method of turning off the latch relay connected to the battery 400 in order for the battery 400 to stop supplying power to the sensing unit 200. In addition, if at least one of the voltage is below the first value or the charging rate is below the second value, the battery management device 11 informs the user of overdischarge and low voltage through a sound, text, or optical pattern alarm. Warnings, etc. can be issued.

Figure 3 is a diagram showing an example of a plurality of hydrogen sensors according to an embodiment disclosed in this document.

Referring to FIG. 3, the fuel cell 10 may include a fuel cell tank 12, a fuel cell stack 13, and a hydrogen supply device 14. At this time, the plurality of hydrogen sensors 100 may be placed in addition to or instead of a location where there is a possibility of hydrogen leaking within the fuel cell 10. For example, the first hydrogen sensor 110 is disposed in the fuel cell tank 12 to obtain hydrogen detection information in the fuel cell tank 12, and the second hydrogen sensor 120 is located in the fuel cell stack ( 13), it is possible to obtain hydrogen detection information in the fuel cell stack 13. Similarly, the third hydrogen sensor 130 may be disposed in the hydrogen supply device 14 to obtain hydrogen detection information in the hydrogen supply device 14. Although three hydrogen sensors are shown in FIG. 3, the number and placement positions of the hydrogen sensors are not limited thereto.

Figure 4 is a diagram showing the configuration of a sensing unit according to an embodiment disclosed in this document.

Referring to FIG. 4, the sensing unit 200 includes a battery 500 that supplies power, a regulator 210 that receives power from the battery and performs voltage transformation, a communication unit 220 that communicates with the control unit 300, and a plurality of devices. A sensor including a connector 231 and a plurality of sensor ICs 232 that are detachable from the plurality of connectors 231 and connected to the plurality of hydrogen sensors 100 to obtain status information of the plurality of hydrogen sensors 100. It may include a controller 240 that generates a determination result based on the unit 230 and hydrogen detection information and determines whether the plurality of hydrogen sensors 100 are damaged based on status information.

The battery 500 may supply power to the sensing unit 200, and the regulator 210 may perform transformation to match the rated voltage of the components constituting the sensing unit 200, for example, the sensor IC 232. there is. For example, the battery 400 can supply 12V power to the sensing unit 200, and the regulator 210 can transform the 12V to 5V.

The communication unit 220 may communicate with the control unit 300 by wire or wirelessly, for example, based on CAN communication.

The sensor unit 230 may include a plurality of connectors 231 and a plurality of sensor ICs 232. At this time, each of the sensor ICs 232 is detachable from the connector 231, and the connector 231 and the sensor IC 232 can be combined one to one. Additionally, each of the sensor ICs 232 may be connected to each of the hydrogen sensors 100 in a one-to-one correspondence. At this time, the sensor IC 232 and the hydrogen sensor 100 may be connected by wire or wirelessly. The plurality of sensor ICs 232 may obtain status information of the hydrogen sensor 100. Status information of the hydrogen sensor 100 may include sensor voltage, current, temperature, etc.

According to the embodiment, the sensing unit 200 is provided with a plurality of connectors 231, so that the hydrogen sensor 100 can be added or removed as desired. The added hydrogen sensor 100 can be combined with the extra connector 231 and sensor IC 232 that are not being used. That is, the detection unit 200 is provided with a plurality of connectors 231, so that even when hydrogen detection through the hydrogen sensor 100 is additionally required, the sensor IC 232 and the hydrogen sensor 100 are installed in the extra connector 231. ) can be used in combination to provide scalability. In other words, there is an advantage that there is no need to change or redesign the HW design to provide additional hydrogen sensors. Through this, the sensing unit 200 can be configured to correspond to the required specifications even when various output and packaging sizes are required depending on the load or type of vehicle.

According to an embodiment, the controller 240 may generate a determination result based on hydrogen detection information and determine whether the plurality of hydrogen sensors 100 are damaged based on status information. The controller 240 may include a MICRO CONTROLLING UNIT (MCU) and may receive sensor status information from the sensor IC 232 through wired or wireless communication.

According to an embodiment, the controller 240 may determine whether the hydrogen sensor 100 is damaged based on the status information of the hydrogen sensor acquired by the sensor IC 232. For example, the status information may include sensor voltage, current, etc., and if the voltage of a specific sensor acquired by the sensor IC 232 is lower or higher than the voltage during normal operation, the controller 240 It may be determined that the sensor is damaged. Through this, if the user determines that the hydrogen sensor 100 is damaged, he or she can replace the damaged sensor. At this time, the user can easily replace the hydrogen sensor 100 by connecting it with the sensor IC 232 attached to the connector 231 without having to reset the entire sensing unit 200 to correspond to the replaced hydrogen sensor. there is.

The battery 500 shown in FIG. 4 may be substantially the same as the battery 400 shown in FIG. 3 .

Figure 5 is a flowchart for explaining a method of operating a fuel cell system according to an embodiment disclosed in this document.

Referring to FIG. 5, the method of operating the fuel cell system includes acquiring hydrogen detection information of a vehicle fuel cell (S100), the detection unit determines whether hydrogen is leaking based on the hydrogen detection information, and controlling the determination result. It may include a step of transmitting to the unit (S200) and a step of the control unit controlling the operation of the fuel cell based on the determination result (S300).

In step S100, the plurality of hydrogen sensors 100 may obtain hydrogen detection information of the vehicle fuel cell 10.

In step S200, the detection unit 200 may determine whether hydrogen is leaking based on the hydrogen detection information and transmit the determination result to the control unit 300.

In step S300, the control unit 300 may control the operation of the fuel cell based on the determination result.

Figure 6 is a diagram showing the operation logic of a fuel cell system according to another embodiment disclosed in this document.

Referring to FIG. 6, in step S1000, the battery management device 11 may determine whether the battery voltage is greater than or equal to a first value and the charging rate is greater than or equal to a second value.

In step S1100, the battery management device 11 may control to stop supplying power to the sensing unit 200 when at least one of the battery voltage is less than the first value or the charging rate is less than the second value.

In step S1200, the plurality of hydrogen sensors 100 may obtain hydrogen detection information of the vehicle fuel cell.

In step S1300, the detection unit 200 may determine whether hydrogen is leaking.

In step S1400, the detection unit 200 may generate notification information if it is determined that hydrogen has leaked.

In step S1500, the sensing unit 200 may transmit a determination result including notification information to the control unit 300.

In step S1600, the fuel cell system 1 can determine the starting state of the fuel cell.

In step S1700, it can be determined whether the user ignited the vehicle while the fuel cell ignition was off.

In step S1800, when the vehicle is ignited, the control unit 300 may stop the starting sequence.

In step S1900, the control unit 300 may control the hydrogen valve to turn off.

In the above, just because all the components constituting the embodiments disclosed in this document are described as being combined or operated in combination, the embodiments disclosed in this document are not necessarily limited to these embodiments. That is, as long as it is within the scope of the purpose of the embodiments disclosed in this document, all of the components may be operated by selectively combining one or more of them.

In addition, terms such as “include,” “comprise,” or “have,” as used above, mean that the corresponding component may be contained, unless specifically stated to the contrary, and thus exclude other components. It should be interpreted as being able to include other components. All terms, including technical or scientific terms, have the same meaning as generally understood by a person of ordinary skill in the technical field to which the embodiments disclosed in this document belong, unless otherwise defined. Commonly used terms, such as terms defined in dictionaries, should be interpreted as consistent with the contextual meaning of the relevant technology, and should not be interpreted in an idealized or overly formal sense unless explicitly defined in this document.

The above description is merely an illustrative explanation of the technical idea disclosed in this document, and those skilled in the art in the technical field to which the embodiments disclosed in this document belong will understand without departing from the essential characteristics of the embodiments disclosed in this document. Various modifications and variations will be possible. Accordingly, the embodiments disclosed in this document are not intended to limit the technical idea of the embodiments disclosed in this document, but rather to explain them, and the scope of the technical idea disclosed in this document is not limited by these embodiments. The scope of protection of the technical ideas disclosed in this document shall be interpreted in accordance with the claims below, and all technical ideas within the equivalent scope shall be interpreted as being included in the scope of rights of this document.

1: Fuel cell system
10: Fuel cell
11: Battery management device
12: Fuel cell tank
13: Fuel cell stack
14: Hydrogen supply device
100: plural hydrogen sensors
110: first hydrogen sensor
120: second hydrogen sensor
130: Third hydrogen sensor
200: detection unit
210: regulator
220: Department of Communications
230: sensor unit
231: connector
232: Sensor IC
240: controller
300: control unit
400, 500: Battery

Claims (10)

A plurality of hydrogen sensors that obtain hydrogen detection information from a vehicle fuel cell; and
It includes a detection unit that determines whether hydrogen is leaking based on the hydrogen detection information and transmits the determination result to the control unit,
A fuel cell system wherein the control unit controls the operation of the fuel cell based on the determination result.
According to paragraph 1,
The determination result includes notification information,
A fuel cell system in which the detection unit generates the notification information when it is determined that hydrogen has leaked.
According to paragraph 2,
The fuel cell system wherein the control unit controls to stop the starting sequence when the vehicle is ignited when the notification information is received while the fuel cell is in an off state.
According to paragraph 2,
The fuel cell system wherein the control unit controls the hydrogen valve to turn off when the notification information is received while the fuel cell is in an on state.
According to paragraph 1,
A fuel cell system in which the control unit and the detection unit communicate based on CAN communication.
According to paragraph 1,
The fuel cell system further includes a battery management device that obtains status information of a battery that supplies power to the fuel cell and controls operation of the battery based on the status information.
According to clause 6,
A fuel cell system wherein the state information includes at least one of voltage and charge rate.
In clause 7,
The battery management device,
A fuel cell system that controls the battery to stop supplying power to the sensing unit when at least one of the voltage is less than the first value or the charging rate is less than the second value.
According to paragraph 1,
The sensing unit is,
Battery to provide power;
a regulator that receives power from the battery and performs voltage transformation;
a communication unit communicating with the control unit;
A sensor unit including a plurality of connectors and a plurality of sensor ICs detachable from the plurality of connectors and connected to the plurality of hydrogen sensors to obtain status information of the plurality of hydrogen sensors; and
A fuel cell system comprising a controller that generates the determination result based on the hydrogen detection information and determines whether the plurality of hydrogen sensors are damaged based on the status information.
Obtaining hydrogen detection information of a vehicle fuel cell;
determining whether hydrogen is leaking based on the hydrogen detection information and transmitting the determination result to a control unit; and
A method of operating a fuel cell system including the control unit controlling the operation of the fuel cell based on the determination result.

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