JP2013109901A - Fuel cell system - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a fuel cell system capable of avoiding a situation that a temperature of hot water at a lower part of a hot water storage tank rises to a system stop temperature to cause power generation to be stopped, which is caused by continuation of a state where there is no usage (supply) of the hot water in the hot water storage tank.SOLUTION: In the case that a temperature of hot water at a lower part in a hot water storage tank 109 rises, and there is a possibility that the temperature reaches a stop temperature of a fuel cell system 101, a controller 106 transmits to a communication notification device 103 via the Internet an image signal that prompts a user to use hot water for continuation of power generation, or a signal to guide by sound. If a predetermined time period lapses with no hot-water supply operations performed by the user, drainage means 713 operates to drain the hot water, and thereby, water is supplied to the lower part of the hot water storage tank. Accordingly, the stop of power generation caused by the temperature of hot water at the lower part in the hot water storage tank 109 reaching the stop temperature of the fuel cell system 101, can be avoided. The avoidance of the stop of power generation allows efficient operations.

Description

  The present invention relates to a fuel cell system including a power generation unit that generates power and a waste heat recovery unit that recovers heat (waste heat) discharged along with power generation.

  Conventionally, for example, a configuration shown in FIG. 11 is disclosed for this type of fuel cell system (see, for example, Patent Document 1).

  Below, the fuel cell system shown by patent document 1 is demonstrated.

  FIG. 11 is a block diagram of a conventional fuel cell system. As shown in FIG. 11, the fuel cell system has a hot water storage tank 1 and a heat recovery heat exchanger 10 that has one end communicating with the lower part of the hot water storage tank 1 and recovering exhaust heat during power generation of the fuel cell 4. A heat recovery pipe 2, a hot water storage tank circulation pump 3 that circulates the hot water in the heat recovery pipe 2 in a direction in which hot water in the hot water storage tank 1 is introduced from the lower part of the hot water storage tank 1 and returned to the upper part of the hot water storage tank 1, and a hot water storage tank 1 includes a water supply pipe 5 that communicates with the lower part of the hot water tank 1 so as to keep hot water in the hot water storage tank 1 at a predetermined amount, a device use detection means 7 provided in the hot water supply pipe 6, a hot water supply pipe 6, and a water supply pipe 5. A branch pipe 8 to be connected, a flow rate sensor 9 for detecting the flow rate of the hot water supply pipe 6, a hot water storage tank circulation pump 3, a tank lower hot water temperature detection means 13, a remote controller 12, a device use detection means 7 and a flow rate sensor 9. Recently with flow sensor Has a timer for measuring the elapsed time since the detection of no substantial flow, operation control means 11 for controlling the hot water tank circulation pump 3 and the notification means (display screen) of the remote control 12, and the upper part in the hot water tank 1 A hot water supply pipe 6 for supplying hot water, a remote controller 12 having a notification means (display screen), and a tank lower hot water temperature detecting means 13 for detecting the temperature of hot water in the lower part of the hot water storage tank 1 are provided. When the temperature of the means 13 exceeds a predetermined temperature, the notifying means (display screen) of the remote controller 12 performs the hot water supply operation from the hot water supply pipe 6 within a predetermined time as shown in FIG. Configured to encourage you to do.

  When the fuel cell system configured as described above operates, the exhaust heat is absorbed by the water in the heat recovery pipe 2 through the heat recovery heat exchanger 10. The heated hot water is injected into the upper portion of the hot water storage tank 1 from the heat recovery pipe 2, and the temperature of the entire hot water storage tank rises, so that the temperature of the tank lower hot water temperature detecting means 13 also rises. On the other hand, if the hot water supply operation is performed from the hot water supply pipe 6, the hot water in the hot water storage tank 1 is reduced by the reduced amount of hot water in the hot water storage tank 1. Decreases.

  Further, in the fuel cell system configured as described above, when the hot water supply operation is not performed from the hot water supply pipe 6, the temperature of the hot water in the lower part of the hot water storage tank 1 has risen, and this is still at the system stop temperature. When there is a risk of reaching, the notification means (display screen) of the remote control 12 prompts the user to perform the hot water supply operation from the hot water supply pipe 6 within a predetermined time as shown in FIG. 11 under the control of the operation control means 11. Therefore, let the user use the hot water in the hot water storage tank 1, and the state where the hot water in the hot water storage tank 1 is not used (hot water supply) continues, the temperature of the hot water in the lower part of the hot water storage tank 1 reaches the system stop temperature. Therefore, it is possible to avoid the stoppage of power generation due to the power generation, and the efficient operation can be executed by avoiding the stoppage of power generation.

JP 2011-174626 A

  However, in the conventional configuration, when the temperature of the hot water in the lower part of the hot water storage tank 1 may reach the system stop temperature, even if a notification is given to the user through the remote controller, if the user does not notice the notification, the power generation is not performed. There was a problem that the stop could not be avoided.

  The present invention solves the above-mentioned conventional problems, and even when the user has gone out or when the user at home has not noticed the remote control notification, the temperature of the hot water in the lower part of the hot water storage tank An object of the present invention is to provide a fuel cell system capable of preventing the temperature from rising to the system stop temperature and avoiding the stop of power generation.

  In order to solve the conventional problems, a fuel cell system according to the present invention includes a fuel cell that generates power using a hydrogen-containing gas and an oxidant gas, and hot water that recovers heat generated when the fuel cell generates power. A fuel cell system comprising: a hot water storage tank for storing; a heat storage detector for detecting a heat storage amount of the hot water storage tank; a self-sustaining power generation detecting means for detecting whether the fuel cell is in a self-sustaining power generation state; and a controller. The controller is when the fuel cell system is in a self-sustaining power generation state, and when the heat storage detector detects that the heat storage amount is smaller than the first heat storage amount smaller than the full storage state, Data for transmitting drainage control for discharging hot water in the hot water storage tank, notification for prompting use of the hot water in the hot water storage tank, and data for prompting use of the hot water in the hot water storage tank to a device outside the system. Performing at least one control of the transmission, a fuel cell system.

  As a result, when the system power supply is interrupted and the fuel cell system is operating as an emergency power supply system, even if the user is in the living room or bedroom and does not notice the remote control notification in the kitchen, it is more reliable. The temperature of the hot water in the lower part of the hot water storage tank can be prevented from rising to the system stop temperature, and the stop of power generation can be avoided.

  Also, when the user is out, the automatic draining means operates and water is supplied from the water supply pipe to the lower part of the hot water tank, so that the temperature of the hot water in the lower part of the hot water tank decreases, It is possible to prevent the temperature of the hot water at the bottom of the system from rising to the system stop temperature, and to avoid power generation stop.

  The fuel cell system of the present invention solves the above-described conventional problems. When the system power supply is interrupted and the fuel cell system is operating as an emergency power system, the user is in a living room or bedroom, Even when the notification from the remote controller of the kitchen is not noticed, the temperature of the hot water in the lower part of the hot water storage tank can be reliably prevented from rising to the system stop temperature, and the power generation stop can be avoided.

  Especially when the user is out, the automatic draining means operates and water is supplied from the water supply pipe to the lower part of the hot water tank, so the temperature of the hot water in the lower part of the hot water tank is lowered and the lower part of the hot water tank is It is possible to prevent the temperature of the hot water from rising to the system stop temperature, and to avoid power generation stop.

1 is a schematic configuration diagram of a fuel cell system according to Embodiment 1 of the present invention. A flowchart showing a procedure for prompting a user to perform a specific action in the fuel cell system according to the embodiment. Explanatory drawing which shows the screen of the remote control which urges the user to perform a specific action in the fuel cell system of the embodiment Explanatory drawing which shows the on / off setting screen of the notification function that prompts the user for specific actions during non-independent operation Explanatory diagram showing an on / off setting screen for a notification function that prompts a user to perform a specific action during autonomous driving Explanatory diagram showing an on / off setting screen for a notification function that prompts a user to perform a specific action during autonomous driving Schematic configuration diagram of a fuel cell system in Embodiment 2 of the present invention A flowchart showing a procedure for prompting a user to perform a specific action in the fuel cell system according to the embodiment. Explanatory drawing which shows the screen of the message E which urges the user to perform a specific action in the fuel cell system of the embodiment Explanatory drawing which shows the screen of message F which urges the user to perform a specific action in the fuel cell system of the embodiment Block diagram of a conventional fuel cell system

  According to a first aspect of the present invention, there is provided a fuel cell that generates power using a hydrogen-containing gas and an oxidant gas, a hot water storage tank that stores hot water that recovers heat generated when the fuel cell generates power, and a heat storage amount of the hot water storage tank. A fuel cell system comprising: a heat storage detector to detect; a self-sustaining power generation detecting means for detecting whether or not the fuel cell is in a self-sustaining power generation state; and a controller; Drainage control for discharging hot water in the hot water storage tank when it is in a state and when the heat storage detector detects that the heat storage amount is not less than the first heat storage amount smaller than the full storage state, and A fuel battery that performs at least one control of notification for prompting use of hot water in the hot water storage tank and data transmission for transmitting data for prompting use of hot water in the hot water storage tank to a device outside the system. It is a system.

  This prevents the temperature of hot water in the lower part of the hot water tank from rising to the system stop temperature and avoids the stoppage of power generation when the system power supply fails and the fuel cell system operates as an emergency power system. Can do.

  Also, when the user is out, the automatic draining means operates and water is supplied from the water supply pipe to the lower part of the hot water tank, so that the temperature of the hot water in the lower part of the hot water tank decreases, so that the hot water tank It is possible to prevent the temperature of the hot water in the lower part from rising to the system stop temperature, and to avoid power generation stop.

  According to a second aspect of the invention, in particular, in the first aspect of the invention, the fuel cell system includes a remote control, and the notification is a control for performing a display prompting the use of hot water on a display screen of the remote control, and the hot water from a speaker of the remote control At least one of the controls for outputting a sound prompting the user to use the device.

  As a result, the fuel cell system prompts the user to use hot water through the screen or speaker of the remote control device, so that the user performs a hot water supply operation. Water is supplied from the water supply pipe to the lower part of the hot water tank, and the temperature of the hot water in the lower part of the hot water tank decreases, preventing the temperature of the hot water in the lower part of the hot water tank from rising to the system stop temperature and stopping power generation. Can be avoided.

In a third aspect of the invention, in particular, in the first aspect of the invention, the data transmission includes control for transmitting display data for prompting use of hot water to a display device outside the fuel cell system, and use of hot water for a speaker outside the fuel cell system. At least one of control for transmitting voice data for prompting and control for transmitting data for prompting use of warm water to the portable terminal is performed.

  As a result, even when the user is in the living room or bedroom and does not notice the remote control notification in the kitchen, the controller can transmit data to devices outside the system, such as TVs and mobile phones, for more reliable use. To the person's whereabouts. When the user performs the hot water supply operation, water is supplied from the water supply pipe to the lower part of the hot water storage tank, and the temperature of the hot water in the lower part of the hot water storage tank is lowered. The temperature of the hot water in the lower part of the hot water storage tank can be prevented from rising to the system stop temperature, and the stop of power generation can be avoided.

  In a fourth aspect of the invention, in particular, in any one of the first to third aspects of the invention, the controller performs control to discharge the hot water in the hot water storage tank after a predetermined time after performing the notification. Is what you do.

  As a result, when the system power supply is interrupted and the fuel cell system is operating as an emergency power supply system, even if the user goes out, or the user is in the living room or bedroom, etc., the remote controller in the kitchen is notified. Even if it is not noticed, the automatic draining means operates, water is supplied from the water supply pipe to the lower part of the hot water tank, and the temperature of the hot water in the lower part of the hot water tank is lowered. It is possible to prevent the temperature of the system from rising to the system stop temperature and to avoid the stop of power generation.

  In a fifth aspect of the invention, in particular, in the fourth aspect of the invention, the controller performs control to discharge the hot water in the hot water storage tank after a predetermined time after performing the notification and the data transmission. It is.

  As a result, even when the user is in the living room or bedroom and does not notice the remote control notification in the kitchen, the controller can transmit data to devices outside the system, such as TVs and mobile phones, for more reliable use. To the person's whereabouts. When the user performs the hot water supply operation, water is supplied from the water supply pipe to the lower part of the hot water storage tank, and the temperature of the hot water in the lower part of the hot water storage tank is lowered. The temperature of the hot water in the lower part of the hot water storage tank can be prevented from rising to the system stop temperature, and the stop of power generation can be avoided. When the user is at home, the energy utilization rate of the fuel cell is improved by performing the hot water supply operation as compared with the automatic drainage measure of the fourth invention.

According to a sixth aspect, in the fifth aspect, the controller performs the data transmission after a predetermined time after performing the notification.
As a result, when the remote control notification is performed and the user notices the remote control notification within a predetermined time and performs a hot water supply operation, the temperature of the hot water in the lower part of the hot water storage tank decreases, and the stoppage of power generation can be avoided. After that, it is possible to prevent data transmission to an external device such as a television or a mobile phone, and the convenience is enhanced.

In a seventh aspect of the invention, in particular, in any one of the first to sixth aspects of the invention, the fuel cell system can set whether to perform the data transmission for each terminal.
This allows the user to select the preferred device by setting for each terminal whether or not to perform data transmission that encourages the user to use hot water, for each external display device, external speaker and mobile terminal, Convenience increases.

(Embodiment 1)
The fuel cell system according to Embodiment 1 of the present invention will be described below with reference to the drawings. Note that the present invention is not limited to the embodiments.

FIG. 1 is a schematic configuration diagram of a fuel cell system according to Embodiment 1 of the present invention. As shown in FIG. 1, the fuel cell system 101 according to the present embodiment includes a fuel cell device 105, a storage battery 104, a remote controller 103, a controller 106, a self-sustaining power generation detection means 107, and a hot water storage tank 109. The

  Here, the type of fuel cell used in the fuel cell device 105 is not limited, but in this embodiment, a polymer electrolyte fuel cell (hereinafter abbreviated as PEFC) is used. Although illustration and description are omitted here, the fuel cell system equipped with PEFC has the same configuration as the conventional system, and reforms the supplied fuel gas to reduce the CO concentration and rich in hydrogen. Hydrogen generating means for generating (hereinafter referred to as power generation fuel gas) and PEFC for generating power by reacting the power generation fuel gas and oxidant gas.

  The fuel cell device 105 is provided with a controller 106 that controls the operation of the entire fuel cell system, but may be provided at a position other than the fuel cell device 105. The controller 106 is configured by a computer such as a microcomputer. Although illustration and description are omitted here, the remote controller 103 is connected to the controller 106. The remote control 103 has an input unit and an output unit, and the output unit includes an image display unit, a sound notification unit, and at least one notification unit. Further, each function of the fuel cell system 101 can be set while the user uses the input unit. Further, the remote controller 103 is configured to receive fuel cell system stop prediction information transmitted from the controller 106, and the image display unit is configured to display an image corresponding to the image signal output from the controller 106. It is. The sound notification unit can generate a warning sound according to the sound signal output from the controller 106.

  The communication notification device 112 includes a communication unit 108 and is connected to the controller 106 via the communication unit 108. Although illustration and description are omitted here, the communication notification device 112 includes an image (light) display unit, a sound notification unit, and at least one notification unit. The type of the communication means 108 is not limited. For example, in this case, the Internet is used. Other than the Internet, for example, a dedicated communication means such as a mobile phone network, specific power-saving wireless communication, or Bluetooth (Blue Tooth (registered trademark)) may be used.

  The communication notification device 112 is configured to be able to transmit stop prediction information of the fuel cell system transmitted from the controller 106, and the image (light) display unit is an image (light) output from the controller 106. An image (light) according to the signal can be displayed. The sound notification unit can generate a warning sound according to the sound signal output from the controller 106. As the communication notification device 112 used here, for example, a home TV provided with a communication function or a mobile phone having a display screen and an incoming call bell is used. In addition to these, a home appliance or a portable terminal that includes a communication unit and includes at least one notification unit among the image display unit / sound notification unit / light notification unit may be used.

  The storage battery 104 charges the storage battery 104 with surplus power when the generated power of the fuel cell device 105 exceeds the household load 111. Further, when the generated power of the fuel cell 105 is lower than the household load 111, the charged amount of the storage battery 104 is discharged, and the shortage of power is supplied to the household load 111.

  The self-sustained power generation detection means 107, one end of which is connected to the commercial power supply 102, is a device that detects whether or not the commercial power supply 102 has a power failure. Here, examples of the independent power generation detection unit 107 include a power detection unit that detects that power is supplied from the storage battery to the fuel cell system.

The hot water storage tank 109 is connected to the fuel cell device 105, and is a device that collects and stores the exhaust heat generated during power generation by circulating hot water in the tank filled with city water. The heat storage detector 110 is a device that detects the temperature of hot water in the lower part of the hot water storage tank 109.

  Below, operation | movement and an effect | action of the fuel cell system of this Embodiment are demonstrated using FIGS. FIG. 2 is a flowchart showing a procedure for prompting a user to perform a specific action in the fuel cell system according to the embodiment. FIG. 3 is an explanatory diagram showing a remote control screen that prompts the user to perform a specific action in the fuel cell system according to the embodiment. FIG. 4 is an explanatory diagram illustrating an on / off setting screen for a notification function that prompts a user to perform a specific action during non-independent operation. FIGS. 5 and 6 are explanatory diagrams showing an on / off setting screen for a notification function that prompts a user to perform a specific action during autonomous driving.

  In the present embodiment, whether or not the user transmits data for encouraging the use of hot water is set for each terminal such as an external display device / external speaker / mobile terminal, according to the user's preference. The user can select the device and the convenience is enhanced.

  Next, a case where the fuel cell system 101 is operated independently will be described. When the heat storage detector 110 that detects the hot water at the bottom of the tank determines that the water temperature at the bottom of the tank has exceeded the remote control notification temperature A (S201 branches to Yes), the controller 106 displays the image display section of the remote control 103 in FIG. By sending a message E as shown, the user is encouraged to use hot water so that power generation can be continued (S202). At this time, the voice guidance may be used. Next, the self-supporting detection unit 107 determines whether or not the system has self-supporting power generation (S203). If it is determined that the self-sustaining power generation is being performed, it is determined whether a predetermined time G (for example, 30 minutes) has elapsed (S204). If the user does not perform the hot water supply operation even after the predetermined time G has elapsed, the controller 106 transmits the image display unit of the home television of the communication notification device 103 (or the mobile phone of the communication notification device 112) via the Internet. ) To prompt the user to use hot water to continue power generation (S205). At this time, the voice guidance may be used.

  In S205, when the user performs a hot water supply operation through a TV or a mobile phone, water is supplied from the water supply pipe to the lower part of the hot water storage tank, the temperature of the hot water in the lower part of the hot water storage tank decreases, and the system shutdown temperature Below C (branch S206 to No). Further, when the heat storage detector 110 that detects the temperature of the hot water at the bottom of the tank detects that the water temperature at the bottom of the tank is equal to or lower than the notification temperature A (S201 branches to No), the controller 106 displays a display screen on the notification means 103 remote controller. In addition to sending a signal to stop, a signal to stop the display screen is sent to the home television of the communication notification device 112 (or the mobile phone of the communication notification device 112) (S208).

  In S205, when the temperature of the water at the bottom of the tank exceeds the system stop temperature C by the heat storage detector 110 that detects the temperature of the hot water at the bottom of the tank without performing the user's hot water supply operation even if notified on a TV or a mobile phone. Branching to the Yes side), the fuel cell system stops power generation (S207).

  As described above, in this embodiment, even when the user is in the living room or bedroom and does not notice the notification from the kitchen remote controller, the controller can send data to devices outside the system, such as a television or a mobile phone. Sending it to the user's location more reliably. When the user performs the hot water supply operation, water is supplied from the water supply pipe to the lower part of the hot water storage tank, and the temperature of the hot water in the lower part of the hot water storage tank is lowered. The temperature of the hot water in the lower part of the hot water storage tank can be prevented from rising to the system stop temperature, and the stop of power generation can be avoided.

(Embodiment 2)
The fuel cell system according to Embodiment 2 of the present invention will be described below with reference to the drawings. Similar components are denoted by the same reference numerals and description thereof is omitted.

  FIG. 7 is a schematic configuration diagram of a fuel cell system according to Embodiment 2 of the present invention. The difference from FIG. 1 is that a drainage means 713 is provided. Here, the hot water supply operation is performed even after a predetermined time (for example, 30 minutes is used) after the controller 106 notifies the remote controller 103 in the home of the message E as shown in FIG. 9. If not, the controller 106 sends a message F notification as shown in FIG. 10 to the television or mobile phone of the communication notification device 112. Then, when the water temperature in the lower part of the hot water storage tank exceeds the drainage temperature B, the controller 106 sends a signal for discharging hot water to the drainage means 713. Thereafter, the drainage means 713 operates to discharge hot water from the drainage port 714. Although the kind of the drainage means 713 used in the fuel cell system 101 is not limited, for example, in this case, an automatic drain valve of the drain outlet 714 is used.

  Below, operation | movement and an effect | action of the fuel cell system of this Embodiment are demonstrated using FIGS. FIG. 4 is an explanatory diagram illustrating an on / off setting screen for a notification function that prompts a user to perform a specific action during non-independent operation.

  FIG. 8 is a flowchart showing a procedure for prompting a user to perform a specific action in the fuel cell system according to the embodiment. FIG. 9 is an explanatory diagram showing a screen of a message E that prompts the user to perform a specific action in the fuel cell system according to the embodiment. FIG. 10 is an explanatory diagram showing a screen of a message F that prompts the user to perform a specific action in the fuel cell system according to the embodiment.

  A case where the fuel cell system 101 operates independently will be described. When the heat storage detector that detects the hot water at the bottom of the tank determines that the water temperature at the bottom of the tank has exceeded the remote control notification temperature A (S801 branches to Yes), the controller 106 shows FIG. 9 on the image display unit of the remote control 103. Such an image and signal are sent to prompt the user to use hot water so that power generation can be continued (S802). At this time, the voice guidance may be used. Next, the self-sustaining power generation detection unit 107 determines the self-sustained power generation of the system (S803). If it is determined that self-sustaining power generation is being performed, it is determined whether a predetermined time (for example, 30 minutes) has elapsed (S804). If the user does not perform the hot water supply operation even after the predetermined time G has elapsed, the controller 106 transmits the image display unit of the home television of the communication notification device 103 (or the mobile phone of the communication notification device 112) via the Internet. ) Is sent to the user to urge the user to use hot water so that power generation can be continued (S805). At this time, the voice guidance may be used. As a result of the user going out and not performing the hot water supply operation, when the hot water temperature in the lower part of the hot water storage tank exceeds the automatic drainage start temperature B (branch S806 to Yes side), the automatic drain means 713 is activated, The hot water is discharged (S807). As a result, water is supplied from the water supply pipe to the lower part of the hot water storage tank, and the temperature of the hot water in the lower part of the hot water storage tank is lowered. When the heat storage detector 110 that detects the temperature of the hot water at the bottom of the tank detects that the water temperature at the bottom of the tank is equal to or lower than the notification temperature A (S801 branches to No), the controller 106 signals the remote control to stop the display screen on the notification means 103. And the controller sends a signal to stop the display to the home television of the communication notification device 112 (or the mobile phone of the communication notification device 112) (S808). (S808). On the other hand, as described above, in the present embodiment, when the system power supply is interrupted and the fuel cell system is operating as an emergency power supply system, if the user goes out, the automatic draining means operates. In addition, water is supplied from the water supply pipe to the lower part of the hot water tank, and the temperature of the hot water in the lower part of the hot water tank is prevented from rising, so that the temperature of the hot water in the lower part of the hot water tank is prevented from rising to the system stop temperature. The power generation stop can be avoided.

As described above, in the fuel cell system according to the present invention, when the system power supply is interrupted and the fuel cell system is operating as an emergency power system, the user is in the living room, bedroom, etc. Even when the notification is not noticed, the controller transmits the data to a device outside the system, for example, a television or a mobile phone, so that the notification is delivered more reliably to the user's location. When the user performs the hot water supply operation, water is supplied from the water supply pipe to the lower part of the hot water storage tank, and the temperature of the hot water in the lower part of the hot water storage tank is lowered. The temperature of the hot water in the lower part of the hot water storage tank can be prevented from rising to the system stop temperature, and the stop of power generation can be avoided.

  When the user goes out, the automatic draining means operates and water is supplied from the water supply pipe to the lower part of the hot water tank, and the temperature of the hot water in the lower part of the hot water tank decreases, so that the lower part of the hot water tank It is possible to prevent the temperature of the hot water from rising to the system stop temperature and to avoid power generation stop.

DESCRIPTION OF SYMBOLS 101 Fuel cell system 102 Commercial system power supply 103 Remote control 104 Storage battery 105 Fuel cell apparatus 106 Controller 107 Self-supporting power generation detection means 108 Communication means 109 Hot water storage tank 110 Heat storage detector 111 Household load 112 Communication notification apparatus 713 Drainage means 714 Drainage port

Claims (7)

A fuel cell that generates electricity using a hydrogen-containing gas and an oxidant gas;
A hot water storage tank for storing hot water recovered from heat generated when the fuel cell generates electricity;
A heat storage detector for detecting the amount of heat stored in the hot water storage tank;
A self-sustaining power generation detecting means for detecting whether or not the fuel cell is in a self-sustaining power generation state;
A controller;
A fuel cell system comprising:
The controller is the hot water storage tank when the fuel cell system is in a self-sustaining power generation state and when the heat storage detector detects that the heat storage amount is not less than a first heat storage amount that is smaller than a fully stored state. Drain control for discharging hot water in the water, notification for prompting the use of hot water in the hot water storage tank, and data transmission for transmitting data for prompting the use of hot water in the hot water storage tank to a device outside the fuel cell system A fuel cell system that controls at least one of them. The fuel cell system includes a remote control,
2. The notification according to claim 1, wherein at least one of control for performing display for prompting use of hot water on a display screen of the remote controller and control for outputting sound for prompting use of warm water from a speaker of the remote control is performed. Fuel cell system.   The data transmission includes control for transmitting display data for prompting the use of hot water to a display device outside the fuel cell system, control for transmitting voice data for prompting the use of warm water to a speaker outside the fuel cell system, and warm water for a portable terminal. The fuel cell system according to claim 1, wherein at least one of control for transmitting data that prompts the use of the fuel cell is performed.   The fuel cell system according to any one of claims 1 to 3, wherein the controller performs control to discharge the hot water in the hot water storage tank after a predetermined time after performing the notification.   5. The fuel cell system according to claim 4, wherein the controller performs drainage control for discharging hot water in the hot water storage tank after a predetermined time after performing the notification and the data transmission.   The fuel cell system according to claim 5, wherein the controller transmits the data after a predetermined time after performing the notification.   The fuel cell system according to any one of claims 1 to 6, wherein the fuel cell system can set whether to perform the data transmission for each terminal.