Power supply system

Abstract

To provide a power supply system that can easily supply electricity. [Solution] The first region includes a first power generation unit, a hydrogen generator that generates hydrogen based on the electricity obtained from the first power generation unit, a storage tank holder that holds a plurality of hydrogen storage units in a detachable and coolable state, and a first load that is driven based on the electricity obtained from the first power generation unit. The second region includes a second power generation unit having a smaller power generation capacity than the first power generation unit, a first discharge tank holder that holds the hydrogen storage units in a detachable and heatable state, a first fuel cell that generates electricity based on the hydrogen from the hydrogen storage units held in the first discharge tank holder, and a second load that is driven based on the electricity obtained from the second power generation unit and the electricity obtained from the first fuel cell. The transport device transports the hydrogen storage units between the storage tank holder and the first discharge tank holder.

Description

Technical Field

[0001] The present invention relates to a power supply system and the like.

Background Art

[0002] Conventionally, as disclosed in Patent Document 1, a system that stores electric power and supplies the stored electric power to electric vehicles and the like has been proposed.

Prior Art Literature

Patent Literature

[0003]

Patent Document 1

Summary of the Invention

Problem to be Solved by the Invention

[0004] However, there is a loss caused by discharge, and it has not been easy to supply electric power to a remote location.

[0005] Therefore, an object of the present invention is to provide a power supply system capable of easily supplying electric power.

Means for Solving the Problem

[0006] A power supply system according to the present invention comprises a first region, at least one of a second region and a third region, and a transport device. The first region includes a first power generation unit, a hydrogen generator that generates hydrogen based on electric power obtained by the first power generation unit, a storage tank holding unit that holds a plurality of hydrogen storage units in a detachable and coolable state, and a first load driven based on at least electric power obtained by the first power generation unit. The second region includes a second power generation unit having a smaller power generation capacity than the first power generation unit, a first discharge tank holder that holds the hydrogen storage unit in a detachable and heatable state, a first fuel cell that generates electricity based on the hydrogen from the hydrogen storage unit held in the first discharge tank holder, and a second load that is driven based on at least the electricity obtained by the second power generation unit and the electricity obtained by the first fuel cell. The third region includes a second discharge tank holder that holds the hydrogen storage unit in a detachable and heatable manner, a second fuel cell that generates electricity based on the hydrogen from the hydrogen storage unit held in the second discharge tank holder, and a third load that is driven at least based on the electricity obtained by the second fuel cell. The transport device transports the hydrogen storage unit between the storage tank holding section and the first discharge tank holding section, and between the storage tank holding section and the second discharge tank holding section, at least one of these locations.

[0007] By transporting only the hydrogen storage unit, it becomes possible to easily supply electricity generated at the first power generation unit to a distant location.

[0008] Preferably, the power supply system comprises at least the second region. The power generation capacity of the second power generation unit is less than or equal to half the power generation capacity of the first power generation unit.

[0009] The hydrogen storage unit, which stores hydrogen based on the surplus electricity generated by the first power generation unit with a large power generation capacity, can be used to supply power to a second load that cannot be supplied by the second power generation unit with a smaller power generation capacity alone.

[0010] Furthermore, preferably, the power consumption of the first load is 1 / 2 or less of the power generation capacity of the first power generation unit.

[0011] The hydrogen storage unit, which stores hydrogen based on the surplus electricity generated in the first power generation unit, can be used to supply power to loads located at a distance (second and third regions).

[0012] Preferably, one of the hydrogen storage units stores less than or equal to half the amount of hydrogen generated per hour by the hydrogen generator.

[0013] This makes it possible to store hydrogen in many hydrogen storage units in a short time, and the small, easily transportable hydrogen storage units can be used to supply power to loads located far away (second and third regions).

[0014] Preferably, the power supply system includes at least the second region. The second region includes the first discharge tank holding section, the first fuel cell, an inverter, a power conditioner, and a first power supply section which also includes an energy storage section. The power obtained from the first fuel cell is supplied to the second load and the energy storage unit via the inverter and the power conditioner. The first fuel cell, the inverter, and the power conditioner are stacked in the vertical direction. The energy storage unit is arranged in the lateral direction of the region in which the first fuel cell, the inverter, and the power conditioner are stacked. The first discharge tank holding unit is positioned in the front-to-back direction between the region in which the first fuel cell, the inverter, and the power conditioner are stacked and the region in which the energy storage unit is located.

[0015] The first discharge tank holder, which houses the hydrogen storage unit, can be easily and compactly positioned. [Effects of the Invention]

[0016] As described above, the present invention provides a power supply system that can easily supply electricity. [Brief explanation of the drawing]

[0017] [Figure 1] This is a diagram showing the configuration of the power supply system in this embodiment. [Figure 2]It is a perspective view of the first power supply section. DETAILED DESCRIPTION OF THE INVENTION

[0018] Hereinafter, the present embodiment will be described with reference to the drawings. Note that embodiments are not limited to the following embodiments. In addition, the contents described in one embodiment are, in principle, similarly applicable to other embodiments. Furthermore, each embodiment and each modification can be combined as appropriate.

[0019] (Power supply system 1) The power supply system 1 according to the present embodiment includes a hydrogen storage section 5, a first region 10, a second region 30, a third region 50, a conveying device 70, and a power supply to be tested 80 (see FIG. 1).

[0020] (Hydrogen storage section 5) The hydrogen storage section 5 stores hydrogen generated by the hydrogen generator 17 in the first region 10. Possible methods for storing hydrogen include storage in a hydrogen storage alloy, storage of liquefied hydrogen, and storage of compressed gaseous hydrogen. The hydrogen storage section 5 is held in a detachable state on the storage tank holding section 21 of the first region 10, the first discharge tank holding section 37a of the second region 30, the second discharge tank holding section 57a of the third region 50, and the conveying device 70.

[0021] One hydrogen storage section 5 stores an amount of hydrogen equal to or less than 1 / 2 of the hourly hydrogen generation amount of the hydrogen generator 17 described later. In the present embodiment, one hydrogen storage section 5 stores, for example, 5 Nm 3 of hydrogen.

[0022] (First region 10) The first region 10 includes a first power generation section 11, a first power conditioner 13, a circuit breaker 15, a hydrogen generator 17, a hydrogen generator holding section 19, a storage tank holding section 21, a first load 23, and a backup fuel cell 25.

[0023] (First power generation section 11) The first power generation unit 11 includes power generation equipment (renewable energy-derived power generation equipment) that generates electricity based on natural energy (renewable energy), such as solar power generation equipment and wind power generation equipment. The power generation device of the first power generation unit 11 is kept in a state where power generation is possible at all times. However, if the power generation device of the first power generation unit 11 is a wind power generation device, and the wind force acting on the first power generation unit 11 exceeds a predetermined wind force, the power generation device of the first power generation unit 11 will be rendered unable to generate power. The power generation device of the first power generation unit 11 is installed on the upper part of the housing of the first region 10. The electricity generated in the first power generation unit 11 is supplied to the hydrogen generator 17 and the first load 23 via the first power conditioner 13.

[0024] In this embodiment, the first power generation unit 11 includes, for example, a solar panel having a power generation capacity of 100 kW.

[0025] (First power conditioner 13) The first power conditioner 13 converts the electricity obtained from the first power generation unit 11 into power (DC) that can drive the hydrogen generator 17, or into power (AC) that can drive the first load 23.

[0026] In this embodiment, the first power conditioner 13 has, for example, a capacity of 200V three-phase AC and 99kW.

[0027] (Circuit breaker 15) The circuit breaker 15 controls the on / off switching of power supply from the first power generation unit 11 to the hydrogen generator 17.

[0028] (Hydrogen generator 17) The hydrogen generator 17 generates hydrogen by performing electrolysis or other processes based on the electricity supplied via the first power conditioner 13.

[0029] In this embodiment, the hydrogen generator 17 generates, for example, 10 Nm³ per hour. 3It consists of a water electrolysis device that generates hydrogen.

[0030] (Hydrogen generator holding section 19) The hydrogen generator holding unit 19 holds the hydrogen generator 17. The hydrogen generator holding unit 19 is located in the first region 10, but it may also be located in other regions, such as near the power supply 80 under test, using a transport device 70 or the like.

[0031] (Storage tank holding section 21) The storage tank holding section 21 holds multiple hydrogen storage units 5 in a detachable and coolable manner. In this embodiment, an example is described in which the storage tank holding section 21 holds six hydrogen storage sections 5, but the number of hydrogen storage sections 5 held is not limited to six. With the storage tank holding section 21 holding the hydrogen storage section 5, the hydrogen storage section 5 is in communication with the hydrogen generator 17. Furthermore, with the storage tank holding section 21 cooling the hydrogen storage section 5, the hydrogen storage section 5 absorbs and stores the hydrogen supplied from the hydrogen generator 17.

[0032] (1st load 23) The first load 23 is an electrical device such as an air conditioner installed in the first area 10.

[0033] The power consumption of the first load 23 is less than or equal to half the power generation capacity of the first power generation unit 11. In this embodiment, the first load 23 is composed of, for example, an electrical device that consumes 10 kW of power.

[0034] (25 backup fuel cells) The backup fuel cell 25 is in communication with the hydrogen generator 17 and includes a power generation device (fuel cell) that generates electricity based on hydrogen from the hydrogen generator 17. The backup fuel cell 25 is used as a backup. In other words, hydrogen from the hydrogen generator 17 is preferentially supplied to the hydrogen storage unit 5 held in the storage tank holder 21, and only after sufficient hydrogen has been supplied to the hydrogen storage unit 5 held in the storage tank holder 21 is it supplied to the backup fuel cell 25.

[0035] In this embodiment, the backup fuel cell 25 has a power generation capacity of 1 kW at 200V three-phase AC.

[0036] (Second area 30) The second region 30 includes a second power generation unit 31, a second power conditioner 33, a first energy storage unit 35, a first power supply unit 37, and a second load 39.

[0037] (Second power generation section 31) The second power generation section 31 includes power generation equipment (renewable energy-derived power generation equipment) that generates electricity based on natural energy (renewable energy), such as solar power generation equipment and wind power generation equipment. The power generation device of the second power generation unit 31 is kept in a state where power generation is possible at all times. However, if the power generation device of the second power generation unit 31 is a wind power generation device, and the wind force acting on the second power generation unit 31 exceeds a predetermined wind force, the power generation device of the second power generation unit 31 will be rendered unable to generate power. The power generation device of the second power generation unit 31 is installed on the upper part of the housing of the second region 30. The electricity generated in the second power generation unit 31 is supplied to the first energy storage unit 35 and the second load 39 via the second power conditioner 33.

[0038] The power generation capacity of the second power generation unit 31 is less than or equal to half the power generation capacity of the first power generation unit 11. In this embodiment, the second power generation unit 31 includes, for example, a solar panel having a power generation capacity of 10 kW.

[0039] (Second power conditioner 33) The second power conditioner 33 converts the power obtained from the second power generation unit 31 into power (DC) that can be stored in the energy storage device of the first energy storage unit 35, or into power (AC) that can drive the second load 39.

[0040] The capacity of the second power conditioner 33 is less than half the capacity of the first power conditioner 13. In this embodiment, the second power conditioner 33 has, for example, a capacity of 200V three-phase AC and 20kW.

[0041] (First energy storage unit 35) The first energy storage unit 35 includes an energy storage device, such as a battery or capacitor, that stores the power obtained from the second power generation unit 31. The power stored in the energy storage device of the first energy storage unit 35 is supplied to the second load 39 via the second power conditioner 33.

[0042] In this embodiment, the first energy storage unit 35 has a capacity of, for example, 40 kWh.

[0043] (1st power supply section 37) The first power supply unit 37 includes a first discharge tank holding unit 37a, a first fuel cell 37b, a first inverter 37c, a third power conditioner 37d, and a second energy storage unit 37e.

[0044] (First discharge tank holding section 37a) The first discharge tank holding section 37a holds multiple hydrogen storage sections 5 in a detachable and heatable manner. In this embodiment, an example is described in which the first discharge tank holding section 37a holds three hydrogen storage sections 5, but the number of hydrogen storage sections 5 held is not limited to three. With the first discharge tank holding section 37a holding the hydrogen storage section 5, the hydrogen storage section 5 is in communication with the first fuel cell 37b. Furthermore, with the first discharge tank holding section 37a heating the hydrogen storage section 5, the hydrogen storage section 5 releases hydrogen to the first fuel cell 37b.

[0045] (1st fuel cell 37b) The system includes a first fuel cell 37b, a power generation device (fuel cell) that communicates with a hydrogen storage unit 5 held in a first discharge tank holding unit 37a, and generates electricity based on hydrogen from the hydrogen storage unit 5 held in the first discharge tank holding unit 37a.

[0046] The first fuel cell 37b is used to supplement the power supply from the second power generation unit 31 and the first energy storage unit 35 to the second load 39. In other words, if the power supply from the second power generation unit 31 and the first energy storage unit 35 to the second load 39 is insufficient, power is supplied from the first fuel cell 37b to the second load 39 via the first inverter 37c and the third power conditioner 37d. If the power supply from the second power generation unit 31 and the first energy storage unit 35 to the second load 39 is sufficient, power is supplied from the first fuel cell 37b to the second energy storage unit 37e via the first inverter 37c and the third power conditioner 37d.

[0047] In this embodiment, the first fuel cell 37b has a power generation capacity of 1 kW at 200 V three-phase AC.

[0048] (First inverter 37c) The first inverter 37c converts the power supplied from the first fuel cell 37b from direct current to alternating current.

[0049] In this embodiment, the first inverter 37c has an output power of 200V three-phase AC and 3kW.

[0050] (Third power conditioner 37d) The third power conditioner 37d converts the power obtained from the first fuel cell 37b into power (DC) that can be stored in the energy storage device of the second energy storage unit 37e, or into power (AC) that can drive the second load 39.

[0051] The capacity of the third power conditioner 37d is less than half the capacity of the second power conditioner 33. In this embodiment, the third power conditioner 37d has, for example, a capacity of 200V three-phase AC and 3kW.

[0052] (Second energy storage unit 37e) The second energy storage unit 37e includes an energy storage device, such as a battery or capacitor, for storing the power obtained from the first fuel cell 37b. The power stored in the energy storage device of the second energy storage unit 37e is supplied to the second load 39 via the third power conditioner 37d.

[0053] The capacity of the second energy storage unit 37e is less than or equal to half the capacity of the first energy storage unit 35. In this embodiment, the second energy storage unit 37e has a capacity of, for example, 19.9 kWh.

[0054] (Arrangement of the first power supply unit 37) For example, the first discharge tank holding section 37a is arranged in the front row, the first fuel cell 37b, the first inverter 37c, and the third power conditioner 37d are stacked vertically on the left side of the rear row, and the second energy storage section 37e is arranged on the right side of the rear row (see Figure 2). In other words, the second energy storage unit 37e is positioned laterally in the region where the first fuel cell 37b, the first inverter 37c, and the third power conditioner 37d are stacked. The first discharge tank holding section 37a is positioned in the front-to-back direction of the region where the first fuel cell 37b, the first inverter 37c, and the third power conditioner 37d are stacked, and the region where the second energy storage section 37e is located. To make the internal structure easier to understand, Figure 2 shows an example in which the casing of the first power supply unit 37 and the wall between the front row where the first discharge tank holding unit 37a is located and the rear row where the first fuel cell 37b and the like are located are made of transparent material. However, these components may be made of opaque material.

[0055] (2nd load 39) The second load 39 is electrical equipment such as air conditioning equipment installed in the second area 30. In this embodiment, the second load 39 is composed of, for example, an electrical device that consumes 10 kW of power.

[0056] (3rd area 50) The third region 50 includes a second power supply unit 57 and a third load 59.

[0057] (Second power supply section 57) The second power supply unit 57 includes a second discharge tank holding unit 57a, a second fuel cell 57b, a second inverter 57c, a fourth power conditioner 57d, and a third energy storage unit 57e.

[0058] (Second discharge tank holding section 57a) The second discharge tank holding section 57a ​​holds multiple hydrogen storage sections 5 in a detachable and heatable manner. In this embodiment, an example is described in which the second discharge tank holding section 57a ​​holds three hydrogen storage sections 5, but the number of hydrogen storage sections 5 held is not limited to three. With the second discharge tank holding section 57a ​​holding the hydrogen storage section 5, the hydrogen storage section 5 is in communication with the second fuel cell 57b. Furthermore, with the second discharge tank holding section 57a ​​heating the hydrogen storage section 5, the hydrogen storage section 5 releases hydrogen to the second fuel cell 57b.

[0059] (Second fuel cell 57b) The system includes a second fuel cell 57b, a power generation device (fuel cell) that communicates with a hydrogen storage unit 5 held in a second discharge tank holding unit 57a, and generates electricity based on hydrogen from the hydrogen storage unit 5 held in the second discharge tank holding unit 57a.

[0060] If the power supply from the second fuel cell 57b to the third load 59 via the second inverter 57c and the fourth power conditioner 57d is sufficient, power is supplied from the second fuel cell 57b to the third energy storage unit 57e via the second inverter 57c and the fourth power conditioner 57d.

[0061] In this embodiment, the second fuel cell 57b has a power generation capacity of 1 kW at 200 V three-phase AC.

[0062] (Second inverter 57c) The second inverter 57c converts the power supplied from the second fuel cell 57b from direct current to alternating current.

[0063] In this embodiment, the second inverter 57c has an output power of 200V three-phase AC and 3kW.

[0064] (4th power conditioner 57d) The fourth power conditioner 57d converts the power obtained from the second fuel cell 57b into power (DC) that can be stored in the energy storage device of the third energy storage unit 57e, or into power (AC) that can drive the third load 59.

[0065] The capacity of the fourth power conditioner 57d is less than half the capacity of the second power conditioner 33. In this embodiment, the fourth power conditioner 57d has, for example, a capacity of 200V three-phase AC and 3kW.

[0066] (3rd energy storage unit 57e) The third energy storage unit 57e includes an energy storage device, such as a battery or capacitor, for storing the power obtained from the second fuel cell 57b. The power stored in the energy storage device of the third energy storage unit 57e is supplied to the third load 59 via the fourth power conditioner 57d.

[0067] The capacity of the third energy storage unit 57e is less than or equal to half the capacity of the first energy storage unit 35. In this embodiment, the third energy storage unit 57e has a capacity of, for example, 19.9 kWh.

[0068] (Arrangement of the second power supply unit 57) For example, the second discharge tank holding section 57a ​​is arranged in the front row, the second fuel cell 57b, the second inverter 57c, and the fourth power conditioner 57d are stacked vertically on the left side of the rear row, and the third energy storage section 57e is arranged on the right side of the rear row. In other words, the third energy storage unit 57e is positioned laterally in the region where the second fuel cell 57b, the second inverter 57c, and the fourth power conditioner 57d are stacked. The second discharge tank holding section 57a ​​is positioned in the front-to-back direction of the region where the second fuel cell 57b, the second inverter 57c, and the fourth power conditioner 57d are stacked, and the region where the third energy storage section 57e is located.

[0069] (3rd load 59) The third load 59 is an electrical device such as an air conditioner installed in the third area 50.

[0070] In this embodiment, the third load 59 is composed of, for example, an electrical device that consumes 10 kW of power.

[0071] (Conveying device 70) The transport device 70 transports multiple hydrogen storage units 5 by truck or the like, at least between the storage tank holding unit 21 and the first discharge tank holding unit 37a, and between the storage tank holding unit 21 and the second discharge tank holding unit 57a. Specifically, the hydrogen storage unit 5, which has been filled with hydrogen by absorption in the absorption tank holding unit 21, is transported by the transport device 70 to the first discharge tank holding unit 37a or the second discharge tank holding unit 57a. The hydrogen storage unit 5, from which hydrogen has been released to the first fuel cell 37b, is transported by the transport device 70 from the first release tank holding unit 37a to the storage tank holding unit 21. The hydrogen storage unit 5, from which hydrogen has been released into the second fuel cell 57b, is transported by the transport device 70 from the second release tank holding unit 57a to the storage tank holding unit 21.

[0072] (Tested power supply 80) The power supply 80 under test is a separate power generation device (power generation device or energy storage device) from the first power generation unit 11, the second power generation unit 31, the backup fuel cell 25, the first energy storage unit 35, the first fuel cell 37b, the second energy storage unit 37e, the second fuel cell 57b, and the third energy storage unit 57e. The load test of the power supply 80 under test is performed using the hydrogen generator 17. When performing the load test, the hydrogen generator holder 19, which holds the hydrogen generator 17, and the storage tank holder 21, which holds the hydrogen storage unit 5, are moved to the vicinity of the power supply 80 under test, and the hydrogen generator 17 and the power supply 80 under test are electrically connected.

[0073] (Effects of providing a storage tank holder 21 on the hydrogen generation side and a first discharge tank holder 37a, etc. on the hydrogen utilization side) By transporting only the hydrogen storage unit 5, it becomes possible to easily supply electricity generated by the first power generation unit 11 to a distant location.

[0074] (Effects of transporting the hydrogen storage unit 5 from the first region 10 to the second region 30) The hydrogen storage unit 5, which stores hydrogen based on the surplus electricity generated by the first power generation unit 11 with a large power generation capacity, can be used to supply power to the second load 39, for which the electricity generated by the second power generation unit 31 with a small power generation capacity is insufficient.

[0075] (Effects of using a first power generation unit 11 with a power generation capacity greater than the power consumption of the first load 23) The hydrogen storage unit 5, which stores hydrogen based on the surplus electricity obtained from the first power generation unit 11, can be used to supply power to loads located at a distance (second region 30, third region 50).

[0076] (Effects of reducing the capacity of hydrogen storage unit 5) This makes it possible to store hydrogen in many hydrogen storage units 5 in a short time, and the small, easily transportable hydrogen storage units 5 can be used to supply power to loads located at a distance (second region 30, third region 50).

[0077] (Effects of housing the first discharge tank holding section 37a, etc., in the first power supply section 37) The first discharge tank holding section 37a, which holds the hydrogen storage section 5, can be easily and in a space-saving manner.

[0078] While several embodiments of the present invention have been described, these embodiments are presented as examples only and are not intended to limit the scope of the invention. These embodiments can be carried out in a variety of other forms, and various omissions, substitutions, and modifications can be made without departing from the spirit of the invention. These embodiments and their variations are included in the scope and spirit of the invention, as well as in the claims and their equivalents. [Explanation of symbols]

[0079] 1. Power supply system 5. Hydrogen Storage Unit 10 First area 11. First Power Generation Unit 13. First Power Conditioner 15 Circuit breaker 17. Hydrogen generator 19. Hydrogen generator holding section 21 Storage tank holding section 23 1st load 25. Backup fuel cell 30 Second area 31. Second Power Generation Unit 33. Second Power Conditioner 35. First Energy Storage Unit 37 1st power supply section 37a First discharge tank holding section 37b 1st fuel cell 37c No. 1 Inverter 37d Third Power Conditioner 37e Second Energy Storage Unit 39 Second load 50 Third area 57 Second power supply section 57a Second discharge tank holding section 57b 2nd fuel cell 57c Second Inverter 57d Fourth Power Conditioner 57e Third Energy Storage Unit 59 Third load 70 Conveying device 80 Power supplies under test

Claims

1. The first area and, The second region and at least one of the third region, Equipped with a conveying device, The first region includes a first power generation unit, a hydrogen generator that generates hydrogen based on the electricity obtained from the first power generation unit, a storage tank holder that holds a plurality of hydrogen storage units in a detachable and coolable state, and a first load that is driven at least based on the electricity obtained from the first power generation unit. The second region includes a second power generation unit having a smaller power generation capacity than the first power generation unit, a first discharge tank holder that holds the hydrogen storage unit in a detachable and heatable state, a first fuel cell that generates electricity based on the hydrogen from the hydrogen storage unit held in the first discharge tank holder, and a second load that is driven based on at least the electricity obtained by the second power generation unit and the electricity obtained by the first fuel cell. The third region includes a second discharge tank holder that holds the hydrogen storage unit in a detachable and heatable manner, a second fuel cell that generates electricity based on the hydrogen from the hydrogen storage unit held in the second discharge tank holder, and a third load that is driven at least based on the electricity obtained by the second fuel cell. The transport device is a power supply system that transports the hydrogen storage unit between the storage tank holding unit and the first discharge tank holding unit, and between the storage tank holding unit and the second discharge tank holding unit, at least one of these locations.

2. The power supply system comprises at least the two regions, The power supply system according to claim 1, wherein the power generation capacity of the second power generation unit is 1 / 2 or less of the power generation capacity of the first power generation unit.

3. The power supply system according to claim 1, wherein the power consumption of the first load is 1 / 2 or less of the power generation capacity of the first power generation unit.

4. The power supply system according to claim 1, wherein one of the hydrogen storage units stores hydrogen at a rate of 1 / 2 or less of the amount of hydrogen generated per hour in the hydrogen generator.

5. The power supply system comprises at least the two regions, The second region includes the first discharge tank holding section, the first fuel cell, an inverter, a power conditioner, and a first power supply section, The power obtained from the first fuel cell is supplied to the second load and the energy storage unit via the inverter and the power conditioner. The first fuel cell, the inverter, and the power conditioner are stacked in the vertical direction. The energy storage unit is arranged in the lateral direction of the region in which the first fuel cell, the inverter, and the power conditioner are stacked. The power supply system according to claim 1, wherein the first discharge tank holding unit is arranged in the front-rear direction of the region in which the first fuel cell, the inverter, and the power conditioner are stacked, and the region in which the energy storage unit is arranged.

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