Hybrid mobile body control system, control method, and control program

Abstract

To enable stable movement of a hybrid mobile body having a fuel cell and a secondary battery.SOLUTION: A hybrid mobile body control system 1 comprises: a hybrid mobile body 10 comprising a fuel cell 11 and a secondary battery 12; a refueling station 20 having a supply section 21 for supplying fuel gas and a supply section 22 for supplying charging power; a management server 30; an energy estimation unit 182 for estimating an energy required for the hybrid mobile body 10 to reach the refueling station 20 on the basis of mobile body information; a supplyable quantity estimation unit 312 for estimating a supplyable quantity of the fuel gas and the charging power on the basis of refueling station information and residence time information; a consumption ratio determination unit 313 for determining a ratio of consumption of the fuel cell 11 and the secondary battery 12 on the basis of mobile body information, estimated energy and supplyable quantity; and a fuel cell control unit 183 for controlling power generation of the fuel cell 11 on the basis of the determined consumption ratio.SELECTED DRAWING: Figure 1

Description

[Technical field]

[0001] The present invention relates to a hybrid mobile object control system, a control method, and a control program, and more particularly to a system, method, and program for controlling a hybrid mobile object that uses a fuel cell and a secondary battery as energy storage. [Background technology]

[0002] Fuel cells that use hydrogen and ammonia are considered to be an essential energy source for carbon neutrality, contributing to the decarbonization of various fields such as transportation, power generation, and industry. The "Hydrogen and Fuel Cell Strategy Roadmap," which was formulated based on Japan's Basic Energy Plan, clearly states that "regarding fuel cell ships, we will consider promoting demonstration projects for their introduction."

[0003] Furthermore, the 2017 Basic Hydrogen Strategy Renewable Energy, Hydrogen, etc. Ministerial Meeting indicated the development and introduction of fuel cell ships (FC ships) for use in mobility. The Basic Energy Plan approved by the Cabinet in 2021 also positions fuel cells for the first time in the power source mix for 2030, and calls for the acceleration of their implementation in society in order to achieve carbon neutrality by 2050. Regarding ships, it is expected that hydrogen will be used for short to medium distances, and ammonia for long distances.

[0004] However, since the volumetric energy density of hydrogen (compressed to 70 MPa) is approximately one-eighth that of gasoline, ships that use fuel cells for energy storage will need to be refueled (bunkered) more frequently than ships powered by fossil fuels.

[0005] There are also ships that use lithium ion batteries (LIBs) to drive motors for propulsion. The energy density of LIBs is about 1 / 30 of that of gasoline, and they require frequent refueling, just like fuel cells.

[0006] Patent Document 1 describes an electric propulsion device for a ship that aims to prevent the storage battery from running out while the ship is sailing. This ship is configured to charge the onboard storage battery from a power source on land and sail using that power. The propulsion motor is controlled based on the distance to the destination, the speed or power consumption, and the remaining battery power. [Prior art documents] [Patent documents]

[0007] [Patent Document 1] JP 2013-14222 A Summary of the Invention [Problem to be solved by the invention]

[0008] The applicant of the present application is considering a hybrid ship equipped with a fuel cell and a secondary battery as energy storage. A supply station for the hybrid ship is provided with equipment for supplying hydrogen to the fuel cell and equipment for charging the secondary battery.

[0009] There are various constraints on the supply of fuel gas and electricity from a refueling station. For example, when refueling a hydrogen fuel cell, the limiting factors are the amount of hydrogen gas stored in the tank and the time and power required to compress the hydrogen gas. When charging a secondary battery, there is a limit on the total power that can be used. There are also other constraints, such as the residence time of the ship (i.e., the time during which hydrogen can be filled and secondary batteries can be charged).

[0010] If such constraints on the supply station are not taken into consideration, the hybrid ship that arrives at the supply station will not be able to receive the necessary supplies, making it difficult for the hybrid ship to operate stably.

[0011] The present invention has been made based on the above recognition, and aims to provide a hybrid vehicle control system, a control method, and a control program that enable a hybrid vehicle having a fuel cell and a secondary battery as energy storage to move stably. [Means for solving the problem]

[0012] The hybrid vehicle control system according to the present invention comprises: A hybrid vehicle including a fuel cell, a secondary battery, and a traction motor supplied with power from the fuel cell and / or the secondary battery; a refueling station having a first supply unit that supplies a fuel gas to the fuel cell and a second supply unit that supplies power to charge the secondary battery; a management server communicatively connected to the hybrid vehicle and the refueling station, an energy estimation unit that estimates energy required for the hybrid vehicle to reach the refueling station based on vehicle information including information regarding power consumption of the hybrid vehicle; a supplyable amount estimation unit that estimates a supplyable amount of fuel gas and charging power to the hybrid vehicle based on refueling station information including constraints related to refueling by the first supply unit and the second supply unit and stay time information related to a schedule of the hybrid vehicle staying at the refueling station; and a consumption ratio determination unit that determines a consumption ratio between the fuel cell and the secondary battery based on information regarding the usage state of the fuel cell and the secondary battery included in the mobile object information, the estimated energy, and the estimated available supply amount; a fuel cell control unit that controls the generated power of the fuel cell based on the determined consumption ratio; Equipped with.

[0013] In the hybrid mobile control system, The information regarding the usage status of the fuel cell and the secondary battery may include the usage ratio of the fuel cell and the secondary battery, the remaining capacity of each cell of the fuel cell and the secondary battery, and / or the amount of power generation of each cell of the fuel cell and the secondary battery.

[0014] In the hybrid mobile control system, The refueling station information may include information regarding a stored amount of fuel gas to be supplied to the fuel cell, and a chargeable amount of power to be supplied to the secondary battery.

[0015] In the hybrid mobile control system, The refueling station information may include information indicating at least one of the time required to supply fuel gas to the fuel cell, the time required to charge the secondary battery, and the time required to compress the fuel gas.

[0016] In the hybrid mobile control system, The stay time information may be information indicating a time when the hybrid vehicle arrives at the refueling station and a time when the hybrid vehicle departs from the refueling station.

[0017] In the hybrid mobile control system, The energy estimation unit may estimate the energy taking into consideration factors that cause fluctuations in power consumption of the hybrid vehicle.

[0018] In the hybrid mobile control system, The hybrid vehicle may be a ship, and the factor may be at least one of wind, tides, and wind waves.

[0019] In the hybrid mobile control system, The supplyable amount estimating unit may estimate the supplyable amount by taking into consideration replenishment to another hybrid vehicle that is to arrive at the replenishment station after the hybrid vehicle.

[0020] In the hybrid mobile control system, The consumption ratio determination unit may calculate the remaining charges of the fuel cell and the secondary battery when the hybrid vehicle arrives at the refueling station from the remaining charges of the fuel cell and the secondary battery included in the vehicle information and the estimated energy, estimate the replenishment energy required to reach the next refueling station from the estimated remaining charges of each battery and the energy required for the hybrid vehicle to move to the next refueling station, and determine the consumption ratio of the fuel cell and the secondary battery so that the supplyable amount of the refueling station is equal to or greater than the replenishment energy.

[0021] In the hybrid mobile control system, The hybrid vehicle may be a ship, a vehicle, or an aircraft that travels along a predetermined travel route.

[0022] The hybrid vehicle control method according to the present invention comprises the steps of: A hybrid vehicle including a fuel cell, a secondary battery, and a traction motor supplied with power from the fuel cell and / or the secondary battery; a refueling station having a first supply unit that supplies a fuel gas to the fuel cell and a second supply unit that supplies power to charge the secondary battery; a management server communicatively connected to the hybrid vehicle and the refueling station, estimating energy required for the hybrid vehicle to reach the refueling station based on vehicle information including information regarding power consumption of the hybrid vehicle; estimating a supplyable amount of fuel gas and charging power to the hybrid vehicle based on refueling station information including constraints related to refueling by the first supply unit and the second supply unit and stay time information related to a plan for the hybrid vehicle to stay at the refueling station; determining a consumption ratio of the fuel cell and the secondary battery based on information on the usage state of the fuel cell and the secondary battery included in the mobile object information, the estimated energy, and the estimated available supply amount; The power generated by the fuel cell is controlled based on the determined consumption ratio.

[0023] A hybrid mobile object control program according to the present invention causes a computer to execute the hybrid mobile object control method. Effect of the Invention

[0024] According to the present invention, it is possible to provide a hybrid vehicle control system, a control method, and a control program that enable a hybrid vehicle having a fuel cell and a secondary battery as energy storage to move stably. [Brief description of the drawings]

[0025] [Figure 1] 1 is a schematic configuration diagram of a hybrid mobile object control system according to an embodiment. [Diagram 2] FIG. 2 is a functional block diagram of the hybrid ship according to the embodiment. [Diagram 3] FIG. 2 is a functional block diagram of a control unit of the hybrid ship according to the embodiment. [Figure 4] FIG. 2 is a functional block diagram of a refueling station of the hybrid mobile control system according to the embodiment. [Diagram 5] FIG. 2 is a functional block diagram of a management server of the hybrid mobile object control system according to the embodiment. [Figure 6] FIG. 2 is a sequence diagram showing an example of a hybrid mobile object control method according to the embodiment. [Figure 7] 5 is a flowchart showing an example of a method for determining a ratio of consumption of a fuel cell and a secondary battery in a hybrid vehicle control method according to an embodiment. DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS

[0026] Hereinafter, an embodiment of the present invention will be described with reference to the drawings.

[0027] <Hybrid vehicle control system> A hybrid mobile object control system 1 according to an embodiment will be described with reference to FIG.

[0028] The hybrid mobile body control system 1 includes a hybrid mobile body 10, a refueling station 20, and a management server 30. The hybrid mobile body 10, the refueling station 20, and the management server 30 are communicatively connected to a communication network N such as the Internet. The protocol of the communication network N is not particularly limited.

[0029] As described below, the hybrid mobile object control system 1 is configured to control one or more hybrid mobile objects 10 having a fuel cell and a secondary battery as energy storage. The hybrid mobile object control system 1 may include a plurality of hybrid mobile objects 10.

[0030] In the following embodiment, the hybrid mobile body 10 is a ship. However, the hybrid mobile body 10 is not limited to a ship, and may be a vehicle such as an automobile or a bus, or an air vehicle such as an airplane or a drone. The hybrid mobile body 10 may also be a mobile body (a ship, a vehicle, an air vehicle, etc.) that travels along a predetermined travel route (such as a regular shipping route).

[0031] Each of the components of the hybrid vehicle 10, the refueling station 20, and the management server 30 will be described in detail below.

[0032] <Hybrid vehicle> The hybrid vehicle 10 will be described with reference to FIGS.

[0033] A hybrid vehicle 10 according to the embodiment includes a fuel cell 11, a secondary battery 12, a propulsion motor 13, a power supply unit 14, converters 15a and 15b, inverters 15c and 15d, an inlet 16, a propeller 17, and a control unit 18. The hybrid vehicle 10 may further include a memory unit (not shown) that stores information about the duration of stay at a refueling station 20 (described later) and the like.

[0034] As shown in FIG. 2, the converter 15a, the converter 15b, the inverter 15c, the inverter 15d and the secondary battery 12 are connected to a DC bus B.

[0035] The fuel cell 11 generates electricity by chemically reacting the fuel gas supplied from the fuel gas tank 11a with oxygen in the air. The electricity generated by the fuel cell 11 is supplied to the propulsion motor 13, and is also supplied to equipment (such as navigation lights) within the hybrid vehicle 10 via a power supply unit 14. The fuel cell 11 may also supply charging power to the secondary battery 12 to charge the secondary battery 12.

[0036] In this embodiment, the fuel cell 11 is a hydrogen fuel cell that uses hydrogen gas as fuel. The type of fuel cell is not particularly limited, and for example, the fuel cell 11 may use ammonia gas as fuel.

[0037] The secondary battery 12 supplies power to the propulsion motor 13. The secondary battery 12 also supplies power to equipment within the hybrid vehicle 10 via a power supply unit 14. The secondary battery 12 includes a battery control unit (BMU) capable of communicating with a control unit 18. In this embodiment, the secondary battery 12 is a lithium ion secondary battery (LIB), but may be another type of secondary battery.

[0038] The propulsion motor 13 rotates a propeller 17 as a propulsion device to propel the hybrid vehicle 10. The propulsion motor 13 is supplied with power from the fuel cell 11 and / or the secondary battery 12. In other words, the propulsion motor 13 is supplied with power from at least one of the fuel cell 11 and the secondary battery 12.

[0039] The traction motor 13 is, for example, an interior permanent magnet synchronous motor (IPMSM), but the type of motor is not limited to this.

[0040] The power supply unit 14 is a power output unit for supplying power to each facility in the hybrid vehicle 10. In this embodiment, the power supply unit 14 supplies AC power (AC 100V, three-phase AC 220V, etc.) converted by the inverter 15c to each facility in the vehicle.

[0041] The converter 15a is a DC-DC converter that converts the DC voltage output from the fuel cell 11 to a predetermined voltage and outputs it to the DC bus B. The converter 15b is an AC-DC converter that converts the AC power of a charging device (power supply unit 22 described below) input via the inlet 16 to a predetermined DC voltage and outputs it to the DC bus B. The inverter 15c converts the DC power of the DC bus B to AC power and outputs it to the power supply unit 14. The inverter 15d converts the DC power of the DC bus B to AC power and outputs it to the propulsion motor 13.

[0042] The inlet 16 is connected to an external charger (a power supply unit 22 of a refueling station 20 described below) for charging the secondary battery 12. For example, the inlet 16 is compatible with CHAdeMO (registered trademark), which is one of the rapid charging methods.

[0043] The propeller 17 is a propulsion device for propelling the hybrid vehicle 10. When the hybrid vehicle 10 is a vehicle such as an automobile, tires (not shown) are mechanically connected to the propulsion motor 13 instead of the propeller 17.

[0044] The control unit 18 is configured to control the hybrid vehicle 10 .

[0045] 3, the control unit 18 includes an information acquisition unit 181, an energy estimation unit 182, a fuel cell control unit 183, a propulsion motor control unit 184, and an information output unit 185. Details of each functional unit will be described later. In this embodiment, since the hybrid vehicle 10 is a ship, the control unit 18 further includes a navigation control unit (N-ECU) (not shown).

[0046] In this embodiment, each functional unit of the control unit 18 is stored in the form of a computer-executable program in a memory (not shown) provided in the hybrid vehicle 10. The control unit 18 is a processor, and realizes a function corresponding to the program by reading the program from the memory and executing it.

[0047] 3, the information acquisition unit 181, the energy estimation unit 182, the fuel cell control unit 183, the propulsion motor control unit 184, and the information output unit 185 are realized by a single control unit 18. However, the present invention is not limited to this, and the control unit 18 may be configured as a combination of multiple independent processors, and each processor may execute a program corresponding to each functional unit to realize each functional unit. For example, the fuel cell control unit 183 may be realized as an FC control unit (F-ECU), and the propulsion motor control unit 184 may be realized as an engine control unit (E-ECU), each of which is realized by an independent processor. In this way, each functional unit of the control unit 18 may be realized by being appropriately distributed to a single or multiple control units.

[0048] Each functional unit of the control unit 18 will now be described in detail.

[0049] The information acquisition unit 181 is configured to acquire various types of information such as internal information of the hybrid vehicle 10. For example, the information acquisition unit 181 acquires vehicle information of the hybrid vehicle 10.

[0050] The mobile body information includes information regarding the power consumption of the hybrid mobile body 10. The power consumption includes the power used for the thrust of the hybrid mobile body 10, the power consumed by the facilities in the mobile body (such as onboard utilities) via the power supply unit 14, and the power used in the fuel cell 11.

[0051] The mobile unit information also includes information on the usage status of the fuel cell 11 and the secondary battery 12. The information on the usage status includes, for example, the usage ratio (ratio of generated power) of the fuel cell 11 and the secondary battery 12, the remaining charge of each cell of the fuel cell 11 and the secondary battery 12, and / or information on the amount of power generated by each cell of the fuel cell 11 and the secondary battery 12. Here, the remaining charge of the fuel cell 11 refers to the amount of gas in the fuel gas tank 11a (remaining amount of fuel gas such as hydrogen). For example, the mobile unit information includes the state of charge (SOC) as information indicating the remaining charge of the secondary battery 12, and includes the amount of gas in the fuel gas tank 11a as information indicating the remaining charge of the fuel cell 11.

[0052] The mobile body information may include information regarding the current position, speed, travel distance (travel distance), and amount of cargo carried by the hybrid mobile body 10, and the like.

[0053] The energy estimation unit 182 estimates the energy (energy consumption, power consumption amount) required for the hybrid mobile body 10 to reach the refueling station 20 based on the above-mentioned mobile body information. For example, the energy estimation unit 182 estimates the energy consumed until the hybrid mobile body 10 reaches the refueling station 20 from the power consumption of the hybrid mobile body 10 and the time required to reach the refueling station 20. The time required to reach the refueling station 20 is obtained from information such as the current position of the hybrid mobile body 10 (used to calculate the distance to the refueling station 20) and the speed. The time required to reach the refueling station 20 may be obtained from an external device (such as the management server 30).

[0054] The energy estimation unit 182 may estimate the energy consumed until the hybrid vehicle 10 reaches the refueling station 20, taking into consideration factors that cause fluctuations in the power consumption of the hybrid vehicle 10. Such factors include power consumed by facilities within the vehicle via the power supply unit 14, and environmental factors such as wind (wind force, wind direction), tides, and wind waves.

[0055] The fuel cell control unit 183 is configured to control the power generated by the fuel cell 11. This fuel cell control unit 183 controls the power generated by the fuel cell 11 based on the consumption ratio between the fuel cell 11 and the secondary battery 12, which is determined by the management server 30. For example, when the determined consumption ratio is 50% (fuel cell 11):50% (secondary battery 12), and the power consumption (load power) of the hybrid vehicle 10 is 40 kW, the fuel cell control unit 183 controls the fuel cell 11 so that the power generated by the fuel cell 11 becomes 20 kW. The method of determining the consumption ratio will be described later.

[0056] The propulsion motor control unit 184 is configured to control the output of the propulsion motor 13. The propulsion motor control unit 184 controls the output of the propulsion motor 13 in response to a speed command input by a user (ship operator).

[0057] The information output unit 185 is configured to output various information. For example, the information output unit 185 outputs a part or all of the mobile body information acquired by the information acquisition unit 181 and information related to the energy estimated by the energy estimation unit 182. The output information is transmitted to an external device such as the management server 30 via a communication device (not shown) in the hybrid mobile body 10.

[0058] Furthermore, in this embodiment, the information output unit 185 outputs stay time information regarding the plan for the hybrid mobile body 10 to stay at the refueling station 20. This stay time information is, for example, information indicating the time when the hybrid mobile body 10 arrives at the refueling station 20 and the time when it departs from the refueling station 20. Based on the stay time information, the time available for refueling the hybrid mobile body 10 (available refueling time) is determined. For example, the available refueling time is the stay time minus the time required for work before and after refueling.

[0059] <Resupply Station> 4, a description will be given of a refueling station 20 that supplies electric power and fuel gas to the hybrid vehicle 10. When the hybrid vehicle 10 is a ship, the refueling station 20 is also called a bunkering station.

[0060] The refueling station 20 has a fuel gas supply unit (first supply unit) 21 that supplies fuel gas to the fuel cell 11, a power supply unit (second supply unit) 22 that supplies power to charge the secondary battery 12, and a server 23. Note that the refueling station 20 is not limited to being fixedly installed on land or sea, and may be installed on a mobile object such as a truck or a ship.

[0061] The server 23 is communicatively connected to the fuel gas supply unit 21 and the power supply unit 22 , and includes an information acquisition unit 231 and an information output unit 232 .

[0062] The information acquisition unit 231 acquires various pieces of information from the fuel gas supply unit 21 and the power supply unit 22. Specifically, the information acquisition unit 231 acquires information relating to the amount of stored fuel gas, the time required to compress the fuel gas, the power required for compression, and the like from the fuel gas supply unit 21. Here, the amount of stored fuel gas is the amount of fuel gas stored in a tank possessed by the fuel gas supply unit 21. In addition, the information acquisition unit 231 acquires information relating to the amount of chargeable power to be supplied to the secondary battery from the power supply unit 22. These pieces of information become constraints related to refueling by the fuel gas supply unit 21 and the power supply unit 22. Hereinafter, the information that becomes the constraints will be referred to as refueling station information.

[0063] The refueling station information includes information regarding the time required for refueling. Specifically, the refueling station information includes information regarding the amount of stored fuel gas to be supplied to the fuel cell 11 and the amount of chargeable electric power to be supplied to the secondary battery 12.

[0064] The refueling station information also includes information indicating at least one of the time required to supply fuel gas to the fuel cell 11, the time required to charge the secondary battery 12, and the time required to compress the fuel gas. Generally, it takes less time to fill the fuel cell 11 with fuel gas than it takes to charge the secondary battery 12. However, this is not the case when the amount of refueling to the fuel cell 11 is large and the amount of charge to the secondary battery 12 is small.

[0065] The information output unit 232 is configured to output various information such as refueling station information, etc. The output information is transmitted to an external device such as the management server 30 via a communication device (not shown) in the refueling station 20.

[0066] When the management server 30 is provided within the refilling station 20, the management server 30 may also function as the server 23. The server 23 may be integrated into the management server 30 provided outside the refilling station 20.

[0067] <Administration Server> The management server 30 will be described in detail with reference to FIG.

[0068] The management server 30 is communicatively connected to the hybrid vehicle 10 and the refueling station 20. The management server 30 may be provided inside the refueling station 20 or outside the refueling station 20.

[0069] The management server 30 includes a control unit 31 , a communication unit 32 , and a storage unit 33 .

[0070] The control unit 31 has an information acquisition unit 311, a supplyable amount estimation unit 312, and a consumption ratio determination unit 313. The communication unit 32 is an interface for transmitting and receiving information between the hybrid vehicle 10 and the refueling station 20. The communication method and standard are not particularly limited.

[0071] The storage unit 33 is composed of a semiconductor memory, a hard disk drive, etc. The storage unit 33 stores the programs executed by the control unit 31, an operation management database 331 of the hybrid mobile body 10, etc. The operation management database 331 stores, for example, a travel schedule of a plurality of hybrid mobile bodies 10 for operating regular routes, and information (current position, etc.) about each hybrid mobile body 10.

[0072] The information acquisition unit 311 is configured to acquire various information from the hybrid mobile body 10 and the refueling station 20. Specifically, the information acquisition unit 311 acquires mobile body information, information related to estimated energy, and staying time information from the hybrid mobile body 10. The information acquisition unit 311 acquires refueling station information from the refueling station 20. The staying time information may be stored in the traffic management database 331 of the storage unit 33. In this case, it is not necessary to receive the staying time information from the hybrid mobile body 10.

[0073] The supplyable amount estimating unit 312 estimates the amount of fuel gas and charging power that can be supplied to the hybrid mobile body 10 based on the refueling station information and the stay time information. For example, the supplyable amount estimating unit 312 estimates the amount of fuel gas and charging power that can be supplied to the hybrid mobile body 10, taking into consideration the amount of fuel gas stored in the fuel gas supplying unit 21, the amount of chargeable power in the power supplying unit 22, the time required to supply fuel gas and power, and the stay time of the hybrid mobile body 10 (available refueling time).

[0074] The supplyable amount estimation unit 312 may estimate the supplyable amount in consideration of refueling to another hybrid mobile body 10 (second hybrid mobile body) that arrives at the refueling station 20 after the hybrid mobile body 10 (first hybrid mobile body). For example, the supplyable amount to the first hybrid mobile body may be determined by subtracting the amount of fuel gas to be supplied to the second hybrid mobile body from the total supplyable amount of fuel gas.

[0075] The consumption ratio determination unit 313 determines the ratio of consumption between the fuel cell 11 and the secondary battery 12 of the hybrid mobile body 10 based on the mobile body information of the hybrid mobile body 10, the energy estimated by the energy estimation unit 182, and the supplyable amount estimated by the supplyable amount estimation unit 312. As will be described in detail later, the consumption ratio determination unit 313 determines the ratio of consumption between the fuel cell 11 and the secondary battery 12 so that the amount that can be supplied to the hybrid mobile body 10 by the refueling station 20 is equal to or greater than the refueling energy (energy required to reach the next refueling station).

[0076] In this way, this embodiment is not based on the premise that the fuel cell 11 and secondary battery 12 of the hybrid vehicle 10 will be fully charged at the refueling station 20, but rather determines the ratio of consumption between the fuel cell 11 and the secondary battery 12 based on the policy of refueling until the hybrid vehicle 10 has accumulated enough energy to move to the next refueling station.

[0077] The hybrid vehicle control system 1 according to the embodiment has been described above. According to this embodiment, the ratio of consumption (usage ratio) between the fuel cell 11 and the secondary battery 12 in the hybrid vehicle 10 is determined in consideration of refueling station information including constraints related to refueling. The generated power of the fuel cell 11 is controlled based on the ratio determined in this manner. This allows the hybrid vehicle 10 to operate stably.

[0078] Furthermore, by adopting a refueling policy of not necessarily refueling until the hybrid vehicle 10 has stored enough energy to travel to the next refueling station, stable operation of each hybrid vehicle 10 is possible when multiple hybrid vehicles 10 are sailing on their respective regular routes.

[0079] The distribution of functions in the system of the above embodiment is merely an example, and is not limited thereto. For example, the energy estimator 182 of the hybrid vehicle 10 may be provided in the management server 30. Also, the available supply amount estimator 312 and / or the consumption ratio determiner 313 of the management server 30 may be provided in the hybrid vehicle 10.

[0080] <Hybrid vehicle control method> Next, an example of a hybrid mobile body control method using the above-mentioned hybrid mobile body control system 1 will be described with reference to FIG.

[0081] The information acquisition unit 181 of the hybrid mobile body 10 acquires mobile body information including information regarding power consumption of the hybrid mobile body 10 (step S11). The information acquisition unit 181 also acquires staying time information stored in the storage unit of the hybrid mobile body 10.

[0082] The energy estimation unit 182 of the hybrid mobile body 10 estimates the energy required for the hybrid mobile body 10 to reach the refueling station 20 based on the mobile body information acquired in step S11 (step S12). For example, in this step, the energy estimation unit 182 estimates the energy consumed until the hybrid mobile body 10 reaches the refueling station 20 from the power consumption of the hybrid mobile body 10 and the time required to reach the refueling station 20.

[0083] The information output unit 185 of the hybrid vehicle 10 transmits the vehicle information acquired in step S11, the energy-related information (energy information) estimated in step S12, and the stay time information to the management server 30 (step S13). The management server 30 receives these pieces of information. In the example of Fig. 6, the management server 30 receives the above information between steps S21 and S22. However, this is not limiting, and the information may be received before step S21.

[0084] The information acquisition unit 311 of the management server 30 acquires replenishing station information including constraint conditions related to replenishing from the replenishing station 20 (step S21). Note that this step may be performed by the information acquisition unit 311 reading out the replenishing station information that is periodically transmitted from the replenishing station 20 to the management server 30 and stored in the storage unit 33.

[0085] The supplyable amount estimation unit 312 of the management server 30 estimates the supplyable amounts of fuel gas and charging power to the hybrid vehicle 10 based on the refueling station information acquired in step S21 and the stay time information received from the hybrid vehicle 10 (step S22).

[0086] The consumption ratio determination unit 313 of the management server 30 determines the ratio of consumption between the fuel cell 11 and the secondary battery 12 of the hybrid mobile body 10 based on the mobile body information and energy information received from the hybrid mobile body 10 and the available supply amount estimated in step S22 (step S23). An example of this step will be described in detail with reference to FIG.

[0087] The consumption ratio determination unit 313 calculates the remaining charge (predicted value) of each of the fuel cell 11 and the secondary battery 12 when the hybrid mobile body 10 arrives at the refueling station 20 from the remaining charge of each of the fuel cell 11 and the secondary battery 12 included in the mobile body information and the energy estimated by the energy estimation unit 182 (step S231). Note that when calculating the predicted value of the remaining charge of each battery, the current usage ratio of each battery is used as a premise.

[0088] Next, the consumption ratio determination unit 313 calculates the replenishment energy (i.e., the energy required to reach the next refueling station) from the remaining charge of each battery calculated in step S231 and the energy required for the hybrid vehicle 10 to travel to the next refueling station (step S232).

[0089] Next, the consumption ratio determination unit 313 determines the ratio of consumption between the fuel cell 11 and the secondary battery 12 so that the supplyable amount of the refueling station 20 is equal to or greater than the refueling energy (step S233). For example, when the supplyable amount of fuel gas from the refueling station 20 is small, the ratio is determined so that the ratio of consumption by the secondary battery 12 is large, and conversely, when the supplyable amount of charging power is small, the ratio is determined so that the ratio of consumption by the fuel cell 11 is large.

[0090] The consumption ratio determined as described above is transmitted from the management server 30 to the hybrid mobile body 10 (step S24). Then, the hybrid mobile body 10 (fuel cell control unit 183) controls the power generated by the fuel cell 11 based on the consumption ratio received from the management server 30 (step S14). Through this control, a balance between the fuel cell 11 and the secondary battery 12 is controlled.

[0091] The control method according to the embodiment has been described above. As shown in Fig. 6, the hybrid vehicle 10 repeatedly executes steps S11 to S14 at a predetermined cycle. Similarly, the management server 30 repeatedly executes steps S21 to S24 at a predetermined cycle. Note that the execution cycle may be shortened as the hybrid vehicle 10 approaches the refueling station 20. This can reduce control errors.

[0092] Based on the above description, a person skilled in the art may be able to conceive additional effects and various modifications of the present invention, but the aspects of the present invention are not limited to the above-mentioned embodiments. Various additions, modifications, and partial deletions are possible within the scope of the conceptual idea and intent of the present invention derived from the contents defined in the claims and their equivalents.

[0093] Each part of the control unit 18 of the hybrid vehicle 10 may be realized by a processor in the hybrid vehicle 10 executing a predetermined program and using hardware resources to perform software processing, or may be realized by the installed hardware itself. The same applies to the control unit 31 of the management server 30.

[0094] When the control units 18 and 31 are configured by software, a program for realizing at least some of the functions may be stored in a recording medium such as a flexible disk or a CD-ROM, and read and executed by a computer. The recording medium is not limited to removable ones such as a magnetic disk or an optical disk, but may be a fixed recording medium such as a hard disk device or a memory.

[0095] In addition, a program that realizes at least a part of the functions of the hybrid mobile control system may be distributed via a communication line (including wireless communication) such as the Internet. Furthermore, the program may be encrypted, modulated, or compressed and distributed via a wired line or wireless line such as the Internet, or stored on a recording medium. [Explanation of symbols]

[0096] 1 Hybrid vehicle control system 10 Hybrid Vehicles 11 Fuel Cell 11a Fuel gas tank 12 Secondary battery 13 Propulsion motor 14 Power supply section 15a,15b Converter 15c,15d inverter 16 Inlet 17 Propeller 18 Control Unit 181 Information Acquisition Department 182 Energy Estimation Unit 183 Fuel Cell Control Unit 184 Propulsion motor control unit 185 Information Output Section 20 Supply Station 21 Fuel gas supply unit 22 Power supply section 23 Server 231 Information Acquisition Department 232 Information Output Section 30 Management Server 31 Control Unit 311 Information Acquisition Department 312 Available supply amount estimation section 313 Consumption ratio determination section 32 Communications Department 33 Storage section 331 Traffic Management Database B DC bus N Communication Network

Claims

1. A hybrid vehicle including a fuel cell, a secondary battery, and a traction motor supplied with power from the fuel cell and / or the secondary battery; a refueling station having a first supply unit that supplies a fuel gas to the fuel cell and a second supply unit that supplies power to charge the secondary battery; a management server communicatively connected to the hybrid vehicle and the refueling station, an energy estimation unit that estimates energy required for the hybrid vehicle to reach the refueling station based on vehicle information including information regarding power consumption of the hybrid vehicle; a supplyable amount estimation unit that estimates a supplyable amount of fuel gas and charging power to the hybrid vehicle based on refueling station information including constraints related to refueling by the first supply unit and the second supply unit and stay time information related to a schedule of the hybrid vehicle staying at the refueling station; and a consumption ratio determination unit that determines a consumption ratio between the fuel cell and the secondary battery based on information regarding the usage state of the fuel cell and the secondary battery included in the mobile object information, the estimated energy, and the estimated available supply amount; a fuel cell control unit that controls the generated power of the fuel cell based on the determined consumption ratio; A hybrid vehicle control system comprising:

2. 2. The hybrid mobile control system according to claim 1, wherein the information regarding the usage status of the fuel cell and the secondary battery includes a usage ratio between the fuel cell and the secondary battery, a remaining charge of each of the fuel cell and the secondary battery, and / or an amount of power generation of each of the fuel cell and the secondary battery.

3. 2. The hybrid mobile control system according to claim 1, wherein the refueling station information includes information regarding a stored amount of fuel gas to be supplied to the fuel cell and a chargeable amount of electric power to be supplied to the secondary battery.

4. 4. The hybrid vehicle control system of claim 3, wherein the refueling station information includes information indicating at least one of the time required to supply fuel gas to the fuel cell, the time required to charge the secondary battery, and the time required to compress the fuel gas.

5. 2. The hybrid vehicle control system according to claim 1, wherein the stay time information is information indicating a time when the hybrid vehicle arrives at the refueling station and a time when the hybrid vehicle departs from the refueling station.

6. The hybrid vehicle control system according to claim 1 , wherein the energy estimating unit estimates the energy by taking into consideration factors that cause fluctuations in power consumption of the hybrid vehicle.

7. 7. The hybrid vehicle control system according to claim 6, wherein the hybrid vehicle is a ship, and the factor is at least one of wind, tides, and wind waves.

8. 2 . The hybrid vehicle control system according to claim 1 , wherein the available supply amount estimation unit estimates the available supply amount by taking into consideration replenishment of another hybrid vehicle that will arrive at the replenishment station after the hybrid vehicle.

9. 2. The hybrid mobile body control system according to claim 1, wherein the consumption ratio determination unit calculates the remaining charges of the fuel cell and the secondary battery when the hybrid mobile body arrives at the refueling station from the remaining charges of the fuel cell and the secondary battery included in the mobile body information and the estimated energy, estimates replenishment energy required to reach the next refueling station from the estimated remaining charges of each battery and the energy required for the hybrid mobile body to move to the next refueling station, and determines a consumption ratio of the fuel cell and the secondary battery so that the supplyable amount of the refueling station is equal to or greater than the replenishment energy.

10. 10. The hybrid mobile body control system according to claim 1, wherein the hybrid mobile body is a ship, a vehicle, or an aircraft that travels along a predetermined travel route.

11. A hybrid vehicle including a fuel cell, a secondary battery, and a traction motor supplied with power from the fuel cell and / or the secondary battery; a refueling station having a first supply unit that supplies a fuel gas to the fuel cell and a second supply unit that supplies power to charge the secondary battery; a management server communicatively connected to the hybrid vehicle and the refueling station, estimating energy required for the hybrid vehicle to reach the refueling station based on vehicle information including information regarding power consumption of the hybrid vehicle; estimating a supplyable amount of fuel gas and charging power to the hybrid vehicle based on refueling station information including constraints related to refueling by the first supply unit and the second supply unit and stay time information related to a plan for the hybrid vehicle to stay at the refueling station; determining a consumption ratio of the fuel cell and the secondary battery based on information on the usage state of the fuel cell and the secondary battery included in the mobile object information, the estimated energy, and the estimated available supply amount; A hybrid vehicle control method comprising: controlling the generated power of the fuel cell based on the determined consumption ratio.

12. A hybrid vehicle control program that causes a computer to execute the method according to claim 11.

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