JP2010244749A - Fuel cell system and its program - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a fuel cell system with which equipment is not instantaneously stopped in case its predetermined end of life condition is satisfied during operation. <P>SOLUTION: A control part 101 inhibits a fuel cell in operation from starting up after its current operation as its final run, when an accumulated power generation period as measured by an accumulated power generation time measurement means 102 reaches a first given time, or when the accumulated number of times of power generation as measured by an accumulated number of times measurement means 103 reaches the first given number of times, whichever comes earlier. Further, a notifying signal output means 104 notifies that the fuel cell system 100 shall not be started next time. With that, power generation following an operation plan of the fuel cell is completed, and a power generation volume currently needed by a user and hot water to be stored in a hot water storage tank are secured, and further, stoppage of the equipment is realized without giving an impression like failure stoppage to have the system safely operated. <P>COPYRIGHT: (C)2011,JPO&INPIT

Description

  The present invention relates to a fuel cell system and a program thereof, and more specifically, a so-called life-end operation that ends a role when it is considered that a function has been sufficiently achieved from the accumulated operation time and the number of operations. Response).

  Conventionally, this type of fuel cell system stops the fuel cell system when the cumulative operation time of the fuel cell main body reaches a predetermined value, and stops when the cumulative number of operations of the fuel cell main body reaches a predetermined value. The system is not activated next time (for example, see Patent Document 1).

  FIG. 5 shows a configuration diagram of a conventional fuel cell system described in Patent Document 1. In FIG. As shown in FIG. 5, when the operation of the fuel cell main body 502 is started, the operation time measuring unit 511 starts to accumulate and accumulate the operation time, and the operation time measured by the operation time measuring unit 511 is started. When a predetermined value set in advance is reached, the fuel cell system 501 is stopped. Further, when the operation of the fuel cell main body 502 is started, the operation frequency measuring means 512 accumulates and accumulates the operation frequency (increases the operation frequency by one), and the operation frequency measured by the operation frequency measurement means 512 is determined in advance. If the set predetermined value is reached, it will not be activated next time.

JP 2004-263912 A

However, in the above-described conventional configuration, when the sum of the values obtained by converting the accumulated power generation time and the number of times of cumulative power generation to the accumulated power generation time using a predetermined conversion formula reaches a predetermined value set in advance, the apparatus is immediately stopped. Therefore, there is a problem that energy loss occurs when the energy applied to the fuel cell exceeds the energy obtained by power generation, such as during startup or when power generation starts. In addition, suddenly stopping when it is desired to generate power impairs the convenience of the user. The present invention solves the above-mentioned conventional problems, and satisfies the lifetime conditions set in advance during operation. In such a case, an object is to provide a fuel cell system in which equipment does not stop immediately.

  In order to achieve the above object, a fuel cell system according to the present invention includes a cumulative power generation time measuring unit that measures a cumulative power generation time of a fuel cell, a cumulative power generation number measuring unit that measures a cumulative power generation number of the fuel cell, When the cumulative power generation time measured by the cumulative power generation time measuring means reaches the first predetermined time or when the cumulative power generation number measured by the cumulative power generation number measuring means reaches the first predetermined number, whichever is earlier Sometimes, when the fuel cell is in operation, the control unit is provided with a control unit that makes the current operation the last operation and does not start the next time after the current operation is finished.

  In the present invention, if the fuel cell is in operation when the cumulative power generation time reaches the first predetermined time or the cumulative power generation count reaches the first predetermined number, whichever is earlier, Since the operation is set as the last operation, the next operation after the end of the current operation is configured not to start, so that the power generation according to the operation plan of the fuel cell can be completed, and the power generation amount currently required by the user, and It is possible to secure the hot water accumulated in the hot water storage tank and to stop the equipment without giving the impression of a failure stop and to operate the system safely.

  The fuel cell system according to the present invention may be configured such that the fuel cell is in operation when the accumulated power generation time reaches the first predetermined time or when the accumulated power generation reaches the first predetermined number, whichever is earlier. For example, the current operation is the last operation, and the next operation after the current operation is completed will not be started, and the operation according to the operation plan of the fuel cell can be completed. Securing hot water accumulated in the hot water storage tank, and further, stopping the equipment without giving an impression of failure stop, and the system can be operated safely.

1 is a block diagram of a fuel cell system according to Embodiment 1 of the present invention. Explanatory drawing for demonstrating the count position of electric power generation time, electricity supply time, and the frequency | count of electric power generation with respect to the driving | running state of the fuel cell system of the embodiment (A) Schematic diagram showing a display example in which a notice signal is popped up on the information terminal device of the fuel cell system of the embodiment. (B) A notice signal is displayed on the information terminal device of the fuel cell system of the embodiment. Schematic showing the display example used Flowchart for explaining the operation of the fuel cell system of the embodiment Configuration diagram of conventional fuel cell system

  According to a first aspect of the present invention, there is provided a cumulative power generation time measuring means for measuring a cumulative power generation time of a fuel cell, a cumulative power generation count measuring means for measuring a cumulative power generation count of the fuel cell, and a cumulative power generation measured by the cumulative power generation time measuring means. The fuel cell may be in operation when the time reaches the first predetermined time or when the cumulative power generation count measured by the cumulative power generation count measuring means reaches the first predetermined frequency, whichever is earlier. For example, the current operation is the last operation, and a control unit that is not activated next time after the current operation is completed is provided, and when the accumulated power generation time reaches the first predetermined time or the accumulated power generation count is If the fuel cell is in operation when the predetermined number of times 1 is reached, whichever is earlier, the current operation is set as the last operation, and the next operation after the end of the current operation is not started. Therefore, the operation according to the operation plan of the fuel cell can be completed, and the user can secure the amount of generated power and the hot water accumulated in the hot water storage tank without giving the impression of a failure stop. The system can be shut down and the system can be operated safely. In addition, it detects deterioration of important parts of the system, such as fuel cell stacks and reformers, that directly contribute to generating power generation, and parts other than those important parts. It is possible to realize an equipment stop for ensuring safety in view of the components of the entire fuel cell that is not well-stored.

  In particular, in addition to the first invention, the second invention is the cumulative power generation measured by the cumulative power generation time measuring means when the cumulative power generation time measured by the cumulative power generation time measuring means reaches a first predetermined time or by the cumulative power generation frequency measuring means. If the number of times reaches the first predetermined number, whichever is earlier, if the fuel cell is in operation, a notification signal output that outputs a notification signal notifying that the fuel cell system will not be activated next time The fuel cell is in operation when the accumulated power generation time reaches the first predetermined time or when the accumulated power generation reaches the first predetermined number, whichever comes first In this case, a notification is made that the fuel cell system will not be activated next time. In other words, in order to output a notification signal that does not permit the start of the next operation, the starting point for taking prompt measures against the device that has stopped the notification signal, for example, the user contacts the service company, the maintenance to the stopped device It can be used as a starting point for requesting to make it ready for operation again, and since the manufacturer has already reached the end of its life, it can be used as a starting point for bringing in equipment replacement negotiations. The original operation rate is improved and energy saving can be secured.

  In a third aspect of the invention, in particular, in the second aspect of the invention, the notification signal output means reaches a second predetermined time that is shorter than the first predetermined time by a cumulative power generation time measured by the cumulative power generation time measuring means. When the cumulative power generation count measured by the cumulative power generation count measuring means reaches a second predetermined number of times that is a predetermined number of times less than the first predetermined number, whichever is earlier, the notification signal is output. Because the warning signal is output before the device outputs a notification signal that does not permit the start of the next operation, prompt measures are taken before the device enters the complete stop state. For example, the user should contact the service company in advance of the complete stoppage of the equipment, request the maintenance of the equipment in advance of the complete stop, and continue the operation without creating a complete stoppage period. Can be used as a starting point to get the device into a possible state, and the manufacturer can report to the user that the device will soon reach the end of its life and stop completely, and bring it to the device replacement negotiation. The original operation rate as a power generation device can be improved and energy saving can be ensured.

  According to a fourth aspect of the invention, in particular, in the third aspect of the invention, the fuel cell can be continuously operated during the period in which the warning signal is informed. Since it is possible to take countermeasures while continuing the operation of the fuel cell until it falls into the range, it is possible to ensure energy saving while ensuring the original operation rate as the power generation device.

  In particular, in addition to the third or fourth invention, the fifth invention displays that the fuel cell system will soon stop when the notification signal output means outputs a warning signal, and the notification signal output means notifies When a signal is output, it is provided with a display means to indicate that it will not be activated next time. If the display means that it will stop soon, the user will contact the service company before the equipment falls into a complete stop state. In addition, it is possible to promptly take countermeasures such as requesting maintenance of the equipment in advance of the complete stop and requesting replacement of the equipment to the manufacturer, and the original operation rate of the power generation apparatus can be secured. In addition, if the display means that it will not be activated next time, the user clarifies the reason why it will not be activated next time, and promptly take countermeasures such as requesting maintenance of the equipment from the service company, or requesting the manufacturer to replace the equipment. Therefore, it is possible to secure the original operation rate as a power generation device.

  A sixth invention is a program for causing a computer to realize at least a part of the fuel cell system according to claims 1 to 5. Since it is a program, it is possible to easily realize at least a part of the fuel cell system of the present invention by cooperating hardware resources such as an electric / information device, a computer, and a server. Also, the program can be distributed / updated and installed easily by recording on a recording medium or distributing the program using a communication line.

  Hereinafter, embodiments of the present invention will be described with reference to the drawings. Note that the present invention is not limited to the embodiments.

(Embodiment 1)
FIG. 1 is a block diagram showing a fuel cell system according to a first embodiment of the present invention, and FIG. 2 is an explanatory diagram illustrating a power generation time and a count position of the number of times of power generation with respect to the operating state of the fuel cell system. Is.

  In FIG. 1, the control unit 101 of the fuel cell system 100 includes a cumulative power generation time measuring unit 102 that measures the cumulative power generation time of the fuel cell, a cumulative power generation number measuring unit 103 that measures the cumulative power generation number of the fuel cell, and a notification signal. An output unit 104 is provided to control the accumulated power generation time measuring unit 102 and the accumulated power generation number measuring unit 103.

  Further, the control unit 101 determines the cumulative power generation time measured by the cumulative power generation time measuring unit 102, the cumulative power generation number measured by the cumulative power generation number measuring unit 103, the first predetermined time, the first predetermined number, and the second predetermined time. And a storage means 105 that stores the second predetermined time, a notification signal output means, and a communication means 107 that communicates with the information terminal device 108 are controlled.

  Then, the control unit 101 determines that the cumulative power generation time measured by the cumulative power generation time measuring unit 102 reaches the first predetermined time or the cumulative power generation number measured by the cumulative power generation number measuring unit 103 reaches the first predetermined number of times. If the fuel cell is in operation, whichever is earlier, the current operation is set as the last operation, and the next operation after the end of the current operation is not started.

  The notification signal output means 104 is configured such that the accumulated power generation time measured by the accumulated power generation time measurement means 102 reaches the first predetermined time or the accumulated power generation number measured by the accumulated power generation time measurement means 103 is the first predetermined number of times. If the fuel cell is in operation, whichever is earlier, the fuel cell system 100 is informed that the fuel cell system 100 will not be started next time, and the cumulative power generation time measured by the cumulative power generation time measuring means 102 is the first. When the second predetermined time shorter than the predetermined time is reached, or when the cumulative power generation number measured by the cumulative power generation number measuring means 103 reaches the second predetermined number less than the first predetermined number of times. At the earlier time, a warning signal for outputting a notification signal is output.

  The information terminal device 108 is connected to the fuel cell system 100 via a home communication line 109 and has a function of controlling the fuel cell system 100. The in-home communication line 109 can also use a wireless medium such as a wireless LAN, Bluetooth (registered trademark), or specific low power wireless. In this case, each of the information terminal device 108 and the fuel cell system 100 is a wireless communication unit. It is necessary to wear.

  In addition to the display of the notification signal and the warning signal, the information terminal device 108 starts and stops the power generation of the fuel cell, the hot water supply temperature, the setting of the bath boiling and the bath boiling finishing reservation, the display of the abnormal code, the power generation It has a function to display the amount of power and the amount of power received.

  About the fuel cell system 100 comprised as mentioned above, the operation | movement and an effect | action are demonstrated below.

  A fuel cell is a system that can produce a high energy effect by chemically reacting hydrogen and oxygen to directly generate electrical energy and at the same time recover and use the heat generated during the reaction. It does not always generate electricity.

  Specifically, since the load power at home is extremely small, the control unit 101 is activated when the start-up energy for starting the fuel cell system 100 is large and the start-up itself is not worth it, or even when the load power at home is sufficiently large. When it is determined that the energy saving effect cannot be expected in the determination of the operation plan calculated from the learning data of the past electric power load and hot water supply load of the home, the fuel cell system 100 is not started and the power generation standby state is entered. Yes. The detailed description of the operation plan is not given in this document.

  The measurement of the accumulated power generation time and the number of accumulated power generations is an important element for detecting the deterioration of important parts of the system such as the fuel cell stack and the reformer, which directly contribute to generate the generated energy.

  In the present invention, the cumulative power generation time and the cumulative number of power generations are measured, and when at least one of them reaches a predetermined value, it is determined that the device life of the fuel cell system 100 has arrived, and generated power is generated. Because it detects deterioration of important parts of the system, such as fuel cell stack and reformer, which directly contributes to safety, safety is taken into account in the overall components of the fuel cell, which is less technically accumulated than general home appliances. It is possible to realize a device stop for securing. Here, a method of detecting the accumulated power generation time and the accumulated power generation number will be described.

  The accumulated power generation time measured by the accumulated power generation time measuring means 102 is used when detecting the deterioration of the solid polymer film of the fuel cell stack. Cumulative power generation time measuring means 102 starts the accumulation process when the fuel cell leaves the standby state, enters the power generation process, and starts accumulating the power generation time. If the fuel cell enters the stop process from the power generation process, The integration of the power generation time is terminated and stored in the storage means 105.

  If the solid polymer membrane progresses, pinholes may open in the membrane or the membrane may break, and if a hole is opened, off-gas mixed with dangerous concentrations of hydrogen gas may flow. The fuel cell may be unsafe.

  Further, the cumulative power generation count measured by the cumulative power generation count measuring means 103 is used when detecting deterioration of the reformer. The cumulative power generation number measuring means 103 may count once when the fuel cell starts power generation, or counts when the fuel cell changes state from the start of power generation to the stop process. good.

  The number of power generations is accumulated and integrated, and the number of power generations stored in the storage means 105 and the new number of power generations are switched and stored. The city gas is reformed to extract hydrogen, and the hydrogen is supplied to the fuel cell stack. The solid polymer fuel cell uses platinum as a catalyst in the reformer, and carbon monoxide is present in the fuel. Then, platinum of the catalyst deteriorates.

  Also, when reforming city gas and taking out hydrogen, the reformer is heated from 600 to 700 degrees with a burner, so the temperature changes from room temperature to 700 degrees each time the fuel cell is started. There is a great burden on the structure. For example, if the reformer breaks due to this stress, high concentration of carbon monoxide may leak, and the fuel cell system 100 may become unsafe. In the case of the reformer, since the structure is assumed to be deteriorated, the deterioration is determined by accumulating the number of power generations. This is because if the fuel cell stops due to any abnormality during the startup process, the reformer is burdened even if it does not generate power.

  FIG. 3 shows an example in which the information terminal device 109 displays the meaning of the notice signal as a message to the user. The control unit 101 outputs the notification signal or the warning signal output from the notification signal output unit 104 to the home communication line 109 via the communication unit 107.

  The fuel cell system 100 includes an information terminal device 108 as display means, and displays the notification signal and the notice signal. In the case of FIG. 3A, when the information terminal device 108 receives the notice signal from the control unit 101 of the fuel cell system 100, the information terminal device 108 displays a message that it will be stopped soon in a pop-up format. In the case of FIG. 3B, the LED is blinked to notify that the fuel cell system 100 will be stopped soon as in the pop-up.

  These are examples of the warning signal. However, when a predetermined period has passed since the notification of the warning signal and the notification signal is finally replaced, in the example of FIG. 3A, the user needs to contact the dealer. In the example shown in FIG. 3B, for example, the LED may change from blinking to lighting, and an expression that allows the user to clearly feel the change that is no longer a notice may be used. .

  As a result, when the warning signal is displayed, the user can quickly take countermeasures against the fuel cell system 100 before the equipment enters a complete stop state, and the original operation rate of the power generator can be secured. When the notification signal is displayed, the reason for not starting the next time is clarified, and in this case as well, the measure for the fuel cell system 100 can be promptly taken like the warning signal.

  The pop-up or LED lighting or blinking described here is not limited to the information terminal device 108, and the same pop-up or LED lighting or blinking may be performed on the display means 106 provided in the fuel cell system 100.

  FIG. 4 is a flowchart for explaining the operation of the fuel cell system of the present embodiment.

  First, in the flowchart of FIG. 4, the control unit 101 determines whether or not a notification signal indicating that the next activation of the fuel cell system 100 is not performed is output (STEP 1). If there is no notification signal (STEP 1 branches to the n side), it is determined whether or not the fuel cell is on standby (STEP 4).

  If the fuel cell is on standby (STEP 4 branches to the y side), the notification signal output means 104 compares the accumulated power generation number with a first predetermined number preset in the storage means 105 (STEP 5). When the accumulated power generation number has reached the first predetermined number (STEP 5 is branched to the y side), the notification signal output means 104 outputs a notification signal indicating that the next activation is not performed. The control unit 101 outputs a notification signal to the information terminal device 108 via the communication means 108 and the home communication line 109. The information terminal device 109 uses the received notification signal to pop up the screen or turn on the LED this time. A message indicating that the fuel cell system 100 is not activated next time is displayed (STEP 6).

  When the accumulated power generation number does not reach the first predetermined number of times (STEP 5 is branched to the n side), the notification signal output means 104 determines the accumulated power generation time and the first predetermined time preset in the storage means 105. Are compared (STEP 7). When the accumulated power generation time has reached the first predetermined time (STEP 7 is branched to the y side), the notification signal output means 104 outputs a notification signal indicating that the next activation is not performed. The control unit 101 outputs a notification signal to the information terminal device 108 via the communication means 108 and the home communication line 109. The information terminal device 109 uses the received notification signal to pop up a screen, turn on an LED, etc. Then, a message indicating that the fuel cell system 100 is not activated next time is displayed (STEP 8).

  Next, if the fuel cell is not waiting (STEP 4 branches to the n side), it is determined whether or not the fuel cell is generating power (STEP 9). When power generation is in progress (STEP 9 branches to the y side), it is determined whether or not the fuel cell stop process has been selected (STEP 10).

  This determination is made according to the operation plan of the control unit 101, when the hot water storage tank provided in the fuel cell system 100 is full, or when the user stops the power generation by operating the information terminal device 108. Any of them may be used.

  When the fuel cell has not selected to stop (STEP 10 branches to the n side), the accumulated power generation time measuring means 102 accumulates and accumulates the power generation time (STEP 15). The notification signal output means 104 compares the accumulated power generation time with a second predetermined time preset in the storage means 105 (STEP 16).

  When the accumulated power generation time has reached the second predetermined time (STEP 16 is branched to the y side), the notification signal output means 105 outputs a notification signal for notifying that the notification signal will be output soon (STEP 17). The control unit 101 outputs a warning signal to the information terminal device 108 via the communication means 107 and the home communication line 109, and the information terminal device 109 displays the content of the warning based on the received warning signal (STEP 17).

  When the fuel cell is generating power and the stop of power generation is selected (STEP 10 is branched to the y side), the fuel cell performs a stop process (STEP 11), and at this time, the number of power generations is accumulated once (STEP 12).

  The notification signal output means 104 compares the accumulated power generation number with a second predetermined number preset in the storage means 105 (STEP 13). When the cumulative number of power generation times has reached the second predetermined number (STEP 13 is branched to the y side), the notification signal output means 104 outputs a notification signal for notifying that the notification signal will be output soon (STEP 14). Then, the contents of the notice are displayed on the information terminal device 108 (STEP 14).

  The control unit 101 outputs a notice signal to the information terminal apparatus 108 via the communication means 108 and the home communication line 109, and the information terminal apparatus 109 displays the notice content based on the received notice signal (STEP 14). .

  The control unit 101 determines whether or not a notification signal indicating that the fuel cell system 100 is not activated next time is output (STEP 1). If the notification signal is output (STEP 1 is set to the y side). (Branch), the fuel cell system 100 is stopped (STEP 1), the notification signal output means 104 outputs a notification signal indicating that the next activation is not performed (STEP 3), and the information terminal device 108 uses the received notification signal. A message indicating that the fuel cell system 100 will not be activated next time is displayed on the screen due to a pop-up or LED lighting this time (STEP 3).

  As described above, in the present embodiment, even when the fuel cell predicts deterioration of components during power generation, if the device is not in a dangerous state, the operation according to the operation plan of the fuel cell is completed. Since it will stop later and will not start from the next time after the stop, the user must secure the amount of generated power and the hot water accumulated in the hot water storage tank, and also stop the equipment to ensure the safety of the system. However, it is possible to realize the equipment stop without giving the impression of a failure stop.

  In addition, in order to output a notification signal that does not permit the start of the next operation, a starting point for taking prompt countermeasures for the device that has stopped the notification signal, for example, the user contacts the service company, The starting point for requesting maintenance and making it ready for operation again, and since the manufacturer has already reached the end of its service life, it can be used as a starting point for bringing equipment into replacement negotiations. As a result, the original operation rate of the engine can be improved and energy saving can be ensured.

  In addition, since the warning signal is output before the device outputs a notification signal that does not permit the start of the next operation, the warning signal is used as a starting point for taking quick countermeasures before the device falls into a complete stop state, for example, use The person contacts the service company in advance of the complete stoppage of the equipment, requests the maintenance of the equipment in advance of the complete stop, and makes it possible to continue operation without creating a complete stop period. In addition, the manufacturer will soon inform the user that the equipment will reach the end of its life and stop completely, and can be used as a starting point for bringing in equipment replacement negotiations, improving the original operating rate of the generator. And energy saving can be secured.

  In addition, the user or manufacturer can take measures while continuing the operation of the fuel cell for the period until the equipment goes into a complete shutdown state, thus ensuring the original operating rate of the power generator and saving energy. Sex can be secured.

  Also, if a warning signal is displayed, the user should contact the service company before the equipment goes into a complete stop state, request the maintenance of the equipment in advance of the complete stop, and request the manufacturer to replace the equipment. Can be taken promptly, and the original operation rate as a power generator can be secured. In addition, when the notification signal is displayed, the reason for not starting up next time is clarified, and the user can promptly take countermeasures such as requesting equipment maintenance to the service company or requesting the manufacturer to replace the equipment. It is possible to secure the original operation rate as a power generation device.

  Note that the means described in this embodiment causes hardware resources such as a CPU (or microcomputer), a RAM, a ROM, a storage / recording device, an electrical / information device including an I / O, a computer, a server, and the like to cooperate. You may implement with the form of a program. In the case of a program, the program can be easily distributed, updated, and installed by recording it on a recording medium such as magnetic media or optical media, or by distributing it using a communication line such as the Internet.

  The fuel cell system according to the present invention stops after the operation according to the operation plan of the fuel cell is completed if there is no danger in the device even if the fuel cell predicts the deterioration of the components during power generation. Since the system does not start from the next time after the shutdown, even if the equipment is stopped to ensure the amount of generated power and the hot water accumulated in the hot water storage tank and the safety of the system. The device can be stopped without giving the impression of stopping. Therefore, the present invention can be applied not only to home use but also to a business fuel cell system in an office or factory.

DESCRIPTION OF SYMBOLS 100 Fuel cell system 101 Control part 102 Cumulative power generation time measurement means 103 Cumulative power generation frequency measurement means 104 Notification signal output means 106 Display means

Claims (6)

A cumulative power generation time measuring means for measuring the cumulative power generation time of the fuel cell; a cumulative power generation time measuring means for measuring the cumulative power generation number of the fuel cell; and a cumulative power generation time measured by the cumulative power generation time measurement means is a first predetermined value. If the fuel cell is in operation when the time is reached or when the cumulative power generation count measured by the cumulative power generation count measuring means reaches the first predetermined number, whichever is earlier, the current operation is performed. A fuel cell system comprising a control unit that is not activated the next time after the current operation is finished as the last operation. Whichever comes first, when the cumulative power generation time measured by the cumulative power generation time measuring means reaches a first predetermined time or when the cumulative power generation number measured by the cumulative power generation number measuring means reaches a first predetermined number of times 2. The fuel according to claim 1, further comprising notification signal output means for outputting a notification signal notifying that the fuel cell system is not started next time if the fuel cell is in operation. Battery system. The notification signal output means includes a cumulative power generation time measured when the cumulative power generation time measured by the cumulative power generation time measurement means reaches a second predetermined time shorter than a first predetermined time or by the cumulative power generation frequency measuring means. 3. A notice signal for notifying that a notification signal is to be outputted is output when the number of times reaches a second predetermined number of times less than the first predetermined number, whichever is earlier. The fuel cell system described in 1. The fuel cell system according to claim 3, wherein the fuel cell can be continuously operated during the period in which the warning signal is informed. When the notification signal output means outputs a warning signal, it is displayed that the fuel cell system will stop soon, and when the notification signal output means outputs a notification signal, a display means for displaying that it will not be activated next time is provided. The fuel cell system according to claim 3 or 4, wherein The program for making a computer implement | achieve at least one part of the fuel cell system of Claims 1-5.

Images