Abstract: A fuel cell vehicle includes: a fuel cell; a storage portion to store produced water that is produced as a result of power generation by the fuel cell; a drainage valve for switching between a storage state and a drainage state of discharging the produced water from the storage portion to the outside of the fuel cell vehicle; a road information acquisition portion configured to acquire road information on roads on which the fuel cell vehicle travels; and a controller configured to drainage valve control operation. The controller sets a road region meeting a first condition defined in advance regarding road information and that permits the drainage state as a first road region where the drainage state is permitted, and the controller performs drainage if a drainage implementation condition defined in advance, including traveling of the fuel cell vehicle in the first road region, is fulfilled.

Abstract: A hydrogen gas supply system comprises a storing unit that stores hydrogen, a communication unit that receives at least either of burden information indicative of an environmental burden exerted during manufacturing of hydrogen externally received by the storing unit and quality information indicative of quality with respect to the hydrogen externally received by the storing unit, a user interface unit that provides an output in accordance with the at least either of the burden information and the quality information with respect to the hydrogen supplied from the storing unit to the user, and a controller that controls the user interface unit based on an amount of the hydrogen received by the storing unit and the at least either of the burden information and the quality information, which is received by the communication unit.

Abstract: A hydrogen gas supply system comprises a storing unit that stores hydrogen, a communication unit that receives at least either of burden information indicative of an environmental burden exerted during manufacturing of hydrogen externally received by the storing unit and quality information indicative of quality with respect to the hydrogen externally received by the storing unit, a user interface unit that provides an output in accordance with the at least either of the burden information and the quality information with respect to the hydrogen supplied from the storing unit to the user, and a controller that controls the user interface unit based on an amount of the hydrogen received by the storing unit and the at least either of the burden information and the quality information, which is received by the communication unit.

Abstract: There is provided a fuel cell vehicle comprising a motor configured to perform a regenerative operation and to drive the fuel cell vehicle; a fuel cell; a secondary battery; and a control unit. The control unit comprises a weight acquirer configured to obtain a current weight of the fuel cell vehicle; and a charge discharge controller configured to set a higher value to an upper limit value and to set a lower value to a lower limit value when the current weight calculated by the weight acquirer is an increased weight that is larger than a reference value, compared with the upper limit value and the lower limit value set when the current weight is the reference weight.

Abstract: A navigation device includes: a drivable distance acquisition portion that acquires a drivable distance over which a fuel cell vehicle is able to drive without being replenished with hydrogen gas; a hydrogen station identification portion that identifies a hydrogen station present within a drivable range; a route setting portion that sets a target route and that changes, when the distance of a first route set according to a predetermined condition is longer than the drivable distance, the target route to a second route that passes through a specific hydrogen station and that is different from the first route; and a performance requirement transmission portion that transmits, to the specific hydrogen station, through a communication portion mounted on the fuel cell vehicle, a performance requirement of pre-processing for charging the hydrogen gas into a hydrogen gas storage portion included in the fuel cell vehicle.

Abstract: A fuel cell vehicle includes: a fuel cell; a storage portion to store produced water that is produced as a result of power generation by the fuel cell; a drainage valve for switching between a storage state and a drainage state of discharging the produced water from the storage portion to the outside of the fuel cell vehicle; a road information acquisition portion configured to acquire road information on roads on which the fuel cell vehicle travels; and a controller configured to drainage valve control operation. The controller sets a road region meeting a first condition defined in advance regarding road information and that permits the drainage state as a first road region where the drainage state is permitted, and the controller performs drainage if a drainage implementation condition defined in advance, including traveling of the fuel cell vehicle in the first road region, is fulfilled.

Abstract: A movement plan producing system that produces a movement plan for a hydrogen filling vehicle includes: a residual hydrogen amount information acquisition portion that communicates with a plurality of vehicles using hydrogen gas as fuel to acquire residual hydrogen amount information indicating a residual hydrogen amount in a hydrogen tank of each of the vehicles; a positional information acquisition portion that acquires positional information indicating the position of each of the plurality of vehicles; and a plan producing portion that produces the movement plan for making the hydrogen filling vehicle fill at least some of the plurality of vehicles with hydrogen using the acquired residual hydrogen amount information and the acquired positional information.

Abstract: A fuel cell system includes a removal treatment execution unit configured to execute an oxide layer removal treatment that removes an oxide layer generated on a catalyst of a fuel cell. The removal treatment execution unit is configured to execute the oxide layer removal treatment by adjusting a voltage of the fuel cell to be within a predetermined second voltage range lower than a predetermined first voltage range that is lower than an open-circuit voltage, when an operation of the fuel cell system shifts from a first operation, where a current value of the fuel cell is zero and the flow rate is controlled to maintain the voltage of the fuel cell within the first voltage range, to a second operation, where the current value is larger than zero and the flow rate is controlled in response to an output request to the fuel cell.

Abstract: Provided is a display device for displaying information, the display device being provided in a movable body including a fuel cell, a storage portion in which fuel gas to be supplied to the fuel cell is stored, and a remaining amount measuring portion configured to measure an amount of the fuel gas in the storage portion. The display device includes a display portion configured to display the information, and a controlling portion configured to control the display portion. The controlling portion displays, on the display portion, the amount of the fuel gas stored in the storage portion based on information provided from the remaining amount measuring portion.

Abstract: There is provided a fuel cell vehicle comprising a motor configured to perform a regenerative operation and to drive the fuel cell vehicle; a fuel cell; a secondary battery; and a control unit. The control unit comprises a weight acquirer configured to obtain a current weight of the fuel cell vehicle; and a charge discharge controller configured to set a higher value to an upper limit value and to set a lower value to a lower limit value when the current weight calculated by the weight acquirer is an increased weight that is larger than a reference value, compared with the upper limit value and the lower limit value set when the current weight is the reference weight.

Abstract: A hydrogen gas supply system comprises a storing unit that stores hydrogen, a communication unit that receives at least either of burden information indicative of an environmental burden exerted during manufacturing of hydrogen externally received by the storing unit and quality information indicative of quality with respect to the hydrogen externally received by the storing unit, a user interface unit that provides an output in accordance with the at least either of the burden information and the quality information with respect to the hydrogen supplied from the storing unit to the user, and a controller that controls the user interface unit based on an amount of the hydrogen received by the storing unit and the at least either of the burden information and the quality information, which is received by the communication unit.

Abstract: A plurality of high voltage unit controllers each includes: a monitoring unit that monitors the hard shutdown signal sent through the dedicated wire lines; and a shutdown unit that, based on a monitoring result of the monitoring unit, stops operation of the high voltage unit that is under control of this high voltage unit controller, and further stops at least part of control functions of this high voltage unit controller.

Abstract: A controller of a fuel cell system is configured to perform a normal mode in which one of a plurality of injectors is driven in a case where a needed power for the fuel cell stack is lower than a predetermined value, and perform a high load mode in which two or more of the injectors are driven in a case where the needed power is equal to or higher than the predetermined value. The controller is configured to output a driving command to each of the injectors under a condition that the normal mode is to be performed, and detect closing failure in one injector driven under the driving command in a case where a pressure measured by a pressure measurer after a time point at which the driving command is output is lower than a predetermined threshold.

Abstract: A fuel cell system includes a removal treatment execution unit configured to execute an oxide layer removal treatment that removes an oxide layer generated on a catalyst of a fuel cell. The removal treatment execution unit is configured to execute the oxide layer removal treatment by adjusting a voltage of the fuel cell to be within a predetermined second voltage range lower than a predetermined first voltage range that is lower than an open-circuit voltage, when an operation of the fuel cell system shifts from a first operation, where a current value of the fuel cell is zero and the flow rate is controlled to maintain the voltage of the fuel cell within the first voltage range, to a second operation, where the current value is larger than zero and the flow rate is controlled in response to an output request to the fuel cell.

Abstract: A method of determining hydrogen deficiency of a fuel cell having a plurality of cell groups includes a reference value storage step of storing, as a reference value, a value of impedance in a state where hydrogen-off gas is discharged from the fuel cell and hydrogen gas and oxidant gas are supplied, a measured value calculation step of calculating a measured value of impedance based on a voltage of the cell groups and a current of the fuel cell, a corrected value calculation step of calculating a corrected value of impedance by correcting the measured value based on the reference value, and a determination step of determining that hydrogen deficiency occurs in a case where the corrected value exceeds a predetermined threshold.

Abstract: A controller of a fuel cell system is configured to perform a normal mode in which one of a plurality of injectors is driven in a case where a needed power for the fuel cell stack is lower than a predetermined value, and perform a high load mode in which two or more of the injectors are driven in a case where the needed power is equal to or higher than the predetermined value. The controller is configured to output a driving command to each of the injectors under a condition that the normal mode is to be performed, and detect closing failure in one injector driven under the driving command in a case where a pressure measured by a pressure measurer after a time point at which the driving command is output is lower than a predetermined threshold.

Abstract: A method of determining hydrogen deficiency of a fuel cell having a plurality of cell groups includes a reference value storage step of storing, as a reference value, a value of impedance in a state where hydrogen-off gas is discharged from the fuel cell and hydrogen gas and oxidant gas are supplied, a measured value calculation step of calculating a measured value of impedance based on a voltage of the cell groups and a current of the fuel cell, a corrected value calculation step of calculating a corrected value of impedance by correcting the measured value based on the reference value, and a determination step of determining that hydrogen deficiency occurs in a case where the corrected value exceeds a predetermined threshold.

Abstract: If a main stop valve of a fuel gas tank is not opened, it becomes possible to display a remaining level of fuel gas. A remaining fuel level displaying method for the fuel cell system comprises: if the main stop valve is opened, then calculating a remaining level of fuel gas in the fuel gas tank using a pressure value acquired from the pressure sensor, and displaying the calculated remaining level of the fuel gas on a display device, and if the main stop valve is closed, then displaying on the display device a remaining level of the fuel gas that was stored into a memory at a time when the main stop valve was shut off.

Abstract: A fuel cell system capable of improving the voltage controllability of a converter provided in the system is provided. A controller judges whether or not a passing power of a DC/DC converter falls within a reduced response performance area for the number of active phases as of the present moment. When the controller determines that the passing power of the DC/DC converter falls within the reduced response performance area, the controller determines the number of phases which avoids the driving within the reduced response performance area, and outputs a command for switching to the determined number of phases (phase switching command) to the DC/DC converter.

Abstract: A plurality of high voltage unit controllers each includes: a monitoring unit that monitors the hard shutdown signal sent through the dedicated wire lines; and a shutdown unit that, based on a monitoring result of the monitoring unit, stops operation of the high voltage unit that is under control of this high voltage unit controller, and further stops at least part of control functions of this high voltage unit controller.