Electric power supply

Abstract

To provide an electric power supply device having a structure with high space efficiency.SOLUTION: Electric power supply devices 1 to 5 each include a battery stack 10 and a crank-shaped wall portion group disposed to be adjacent to the battery stack 10. The crank-shaped wall portion groups of the electric power supply devices 1 to 5 are crank-shaped wall portion groups 106, 206, 406, and 506, respectively. The crank-shaped wall portion groups 106, 206, 406, and 506 each include a first wall portion, a second wall portion, and a third wall portion. The first wall portion extends in a first direction which is an X direction or a Y direction. The second wall portion extends from one end of the first wall portion in a second direction intersecting with the first direction. The third wall portion extends in a third direction intersecting with the second direction from an end of the second wall portion which is farther from the first wall portion.SELECTED DRAWING: Figure 1

Description

Technical Field

[0001] The disclosed technology relates to a power supply device including a wall portion provided adjacent to a battery stack.

Background Art

[0002] Some power supply devices are configured with a wall portion provided around a battery stack composed of a plurality of battery cells. For example, Patent Document 1 discloses a configuration in which a power storage unit in which a plurality of battery cells are housed in an outer container is housed in an outer body composed of a plurality of wall portions.

Prior Art Documents

Patent Documents

[0003]

Patent Document 1

Summary of the Invention

Problems to be Solved by the Invention

[0004] By the way, it is described that in a conventional power supply device, together with the battery cells, electrical devices such as a circuit board for controlling charging and discharging of the battery cells are also housed in the outer body. And considering that various devices are mounted together with a plurality of battery cells in the power supply device, it is preferable that the power supply device has a structure with excellent space efficiency. For example, depending on the structure around the battery stack, the power supply device may become large as a whole.

[0005] The disclosed technology aims to provide a power supply device with a highly space-efficient structure.

Means for Solving the Problems

[0006] One aspect of the disclosed technology includes a battery stack including a plurality of rechargeable battery cells, and a wall portion provided adjacent to the battery stack and capable of arranging electrical equipment. As the wall portion, a first wall portion extending in a first direction, a second wall portion extending from one end of the first wall portion in a second direction intersecting the first direction, and a third wall portion extending from the end of the second wall portion far from the first wall portion in a third direction intersecting the second direction. It is a power supply device having.

[0007] For the power supply device according to the above aspect, for example, by arranging the electrical equipment installed on the wall portion according to its shape and size, the overall power supply device can be made smaller than when only a flat wall portion is adopted. That is, the power supply device according to the above aspect has a highly space-efficient structure.

Advantages of the Invention

[0008] According to the disclosed technology, a power supply device having a highly space-efficient structure is provided.

Brief Description of the Drawings

[0009]

Figure 1

Figure 2

Figure 3

Figure 4

Figure 5

Figure 6

Figure 7

Figure 8

Figure 9

Figure 10

Embodiments for Carrying Out the Invention

[0010] Hereinafter, embodiments in which the disclosed technology is embodied will be described in detail with reference to the accompanying drawings.

[0011] [First Embodiment] FIG. 1 is a schematic configuration diagram showing the arrangement of each part when the power supply device 1 according to this embodiment is viewed from above. In FIG. 1, the X direction and the Y direction are shown. In this embodiment, both the X direction and the Y direction are horizontal directions. Also, the X direction and the Y direction are directions that intersect each other. In this embodiment, the X direction and the Y direction are directions that are perpendicular to each other.

[0012] As shown in FIG. 1, the power supply device 1 has a battery stack 10 and a wall portion 100. The battery stack 10 is composed of a plurality of battery cells 11. The battery cells 11 can be charged and discharged. The battery stack 10 is housed in a battery stack housing space 15 provided in the power supply device 1.

[0013] The wall portion 100 is provided so as to separate the battery stack housing space 15 from the outside. The wall portion 100 has a first side wall portion 101, a second side wall portion 102, and a third side wall portion 103 that form the side surface. The first side wall portion 101, the second side wall portion 102, and the third side wall portion 103 face the side surfaces other than a specific side surface 12 of the side surface of the battery stack 10, respectively.

[0014] The wall portion 100 has a crank-shaped wall portion group 106 in a specific facing region 20 that faces the specific side surface 12 of the battery stack 10. The specific facing region 20 is a region located in front of the specific side surface 12 when viewed from the battery stack 10.

[0015] As shown in FIG. 1, the crank-shaped wall portion group 106 has a crank-shaped cross section with two bending points as a whole. The crank-shaped wall portion group 106 separates the inner space 21 on the battery stack 10 side from the outer space 22 on the side opposite to the battery stack 10 side. The inner space 21 is a space connected to the battery stack accommodation space 15. The outer space 22 is a space on the outer side of the power supply device 1 compared to the inner space 21.

[0016] The crank-shaped wall portion group 106 includes a first wall portion 110, a second wall portion 120, and a third wall portion 130. The first wall portion 110 is a flat plate extending in the Y direction. The first wall portion 110 has a first end portion 111 and a second end portion 112 as end portions in the Y direction. The first wall portion 110 of the present embodiment is provided facing a specific side surface 12 of the battery stack 10.

[0017] The second wall portion 120 is a flat plate extending in the X direction from the first end portion 111 of the first wall portion 110. The second wall portion 120 has a first end portion 121 and a second end portion 122 as end portions in the X direction. The first end portion 121 of the second wall portion 120 is the end portion on the first wall portion 110 side. The second end portion 122 of the second wall portion 120 is the end portion on the side far from the first wall portion 110. The second wall portion 120 of the present embodiment is provided so as to extend from the first end portion 111 of the first wall portion 110 toward the specific side surface 12 of the battery stack 10.

[0018] The third wall portion 130 is a flat plate extending in the Y direction from the second end portion 122 which is the end portion on the side far from the first wall portion 110 in the second wall portion 120. The third wall portion 130 has a first end portion 131 and a second end portion 132 as end portions in the Y direction. The first end portion 131 of the third wall portion 130 is the end portion on the second wall portion 120 side. The second end portion 132 of the third wall portion 130 is the end portion on the side far from the second wall portion 120. The third wall portion 130 of the present embodiment is provided so as to extend from the second end portion 122 of the second wall portion 120 toward the side opposite to the first wall portion 110.

[0019] That is, in the crank-shaped wall portion group 106, the first wall portion 110 extends from the first end portion 121 of the second wall portion 120 in a direction intersecting the second wall portion 120. Further, the third wall portion 130 extends from the second end portion 122 of the second wall portion 120 in a direction opposite to that of the first wall portion 110.

[0020] FIG. 2 is a cross-sectional view of the power supply device 1 at the A-A position shown in FIG. 1. FIG. 2 shows the Z direction which is the height direction. As shown in FIG. 2, the wall portion 100 of the power supply device 1 has a lower wall 104 located below the battery stack 10 and an upper wall 105 located above the battery stack 10. The crank-shaped wall portion group 106 is provided between the lower wall 104 and the upper wall 105.

[0021] Electrical equipment can be arranged in the crank-shaped wall portion group 106. In the crank-shaped wall portion group 106 of the present embodiment, as shown in FIG. 1, a first electrical equipment 31, a second electrical equipment 32, and a third electrical equipment 33 are provided. Specifically, the first electrical equipment 31 is attached to the outer surface 113 which is the surface on the outer space 22 side of the first wall portion 110. The second electrical equipment 32 is attached to the inner surface 114 which is the back surface of the outer surface 113 of the first wall portion 110. The third electrical equipment 33 is attached to the outer surface 133 which is the surface on the outer space 22 side of the third wall portion 130.

[0022] FIG. 1 shows the protruding length L1 from the outer surface 113 of the first wall portion 110 of the first electrical equipment 31, the protruding length L2 from the inner surface 114 of the first wall portion 110 of the second electrical equipment 32, and the protruding length L3 from the outer surface 133 of the third wall portion 130 of the third electrical equipment 33. In the present embodiment, both the protruding length L1 of the first wall portion 110 and the protruding length L2 of the second electrical equipment 32 are shorter than the protruding length L3 of the third electrical equipment 33. Further, FIG. 1 shows the combined length L4 of the electrical equipment and the crank-shaped wall portion group 106 in the X direction, and the length L5 of the crank-shaped wall portion group 106 in the Y direction.

[0023] Figure 3 shows a reference example different from the present embodiment. In the reference example shown in Figure 3, the first electrical device 31, the second electrical device 32, and the third electrical device 33 are all provided on one side 91 of a flat reference wall portion 90. Regarding such a reference example, Figure 3 shows the length L6 in the X direction. The length L6 is the length obtained by adding the thickness of the reference wall portion 90 serving as the mounting surface to the protruding length L3 of the first electrical device 31 having the longest protruding length from the mounting surface of the reference wall portion 90. The length L6 according to this reference example is approximately the same as the length L4 of the power supply device 1 of the present embodiment. These lengths L4 and L6 in the X direction are obtained by adding the thickness of the wall portion serving as the mounting surface to the protruding length L3 of the first electrical device 31 having the longest protruding length from the mounting surface.

[0024] In the reference example, the first electrical device 31, the second electrical device 32, and the third electrical device 33 are arranged side by side in the Y direction on one side 91 of the reference wall portion 90. Therefore, the length L7 of the reference wall portion 90 in the Y direction is longer than the total length of the lengths of the first electrical device 31, the second electrical device 32, and the third electrical device 33 in the Y direction.

[0025] On the other hand, in the crank-shaped wall portion group 106 according to the present embodiment, the first electrical device 31 and the second electrical device 32 having relatively short protruding lengths are respectively arranged on the front and back of the first wall portion 110. That is, the first electrical device 31 and the second electrical device 32 can be arranged overlappingly in the X direction. Therefore, the length L5 of the crank-shaped wall portion group 106 according to the present embodiment can be shorter than the length L7 in the Y direction of the reference wall portion 90 according to the reference example. In this way, the crank-shaped wall portion group 106 of the power supply device 1 according to the present embodiment is small as a whole in a state where the electrical devices are attached and is excellent in space efficiency. Therefore, the power supply device 1 has a structure that can be miniaturized as a whole.

[0026] Furthermore, the crank-shaped wall portion group 106 is configured by providing a plurality of wall portions so as to intersect. Therefore, the crank-shaped wall portion group 106 has higher rigidity than the flat reference wall portion 90. Thus, the power supply device 1 has high rigidity as a whole of the wall portion 100 by adopting the crank-shaped wall portion group 106. Also, when the flat reference wall portion 90 has the same rigidity as the crank-shaped wall portion group 106, the thickness becomes thick. That is, when the reference wall portion 90 is adopted, the power supply device tends to be heavy. On the other hand, the power supply device 1 adopting the crank-shaped wall portion group 106 is lightweight.

[0027] Also, as shown in FIG. 1, the crank-shaped wall portion group 106 of the power supply device 1 according to the present embodiment has a hinge portion 150. The hinge portion 150 is provided so as to connect the first end portion 111 of the first wall portion 110 and the first end portion 121 of the second wall portion 120. The first wall portion 110 of the present embodiment is fixed so as not to rotate or the like. The first wall portion 110 is fixed to, for example, at least one of the lower wall 104 and the upper wall 105. Also, the third wall portion 130 is fixed to the second end portion 122 of the second wall portion 120.

[0028] Thereby, the second wall portion 120 and the third wall portion 130 are integrated to form a rotatable rotating wall portion 140 with respect to the first wall portion 110. The direction of the rotational movement of the rotating wall portion 140 is the direction in which the angle between the first wall portion 110 and the second wall portion widens, as indicated by arrow B in FIG. 4. For this reason, the rotational movement of the rotating wall portion 140 in the direction in which the angle between the first wall portion 110 and the second wall portion widens may be referred to as an expanding rotational movement. Note that the first wall portion 110 of the crank-shaped wall portion group 106 is a non-rotating wall portion that is not the rotating wall portion 140. The rotating wall portion 140 can also perform a return rotational movement that returns from the rotating state to the reference state, contrary to the expanding rotational movement. The direction of the return rotational movement of the rotating wall portion 140 is the direction in which the angle between the first wall portion 110 and the second wall portion narrows. In the present embodiment, the rotating wall portion 140 can be rotationally moved, for example, by an operator manually moving it.

[0029] FIG. 4 shows the rotating wall portion 140 in the reference state before the enlarged rotational movement by a two-dot chain line. The rotating wall portion 140 in the rotated state after the enlarged rotational movement is shown by a solid line. The crank-shaped wall portion group 106 has a crank shape with two bending portions in the reference state. And the rotating wall portion 140 moves toward the outer space 22 side compared with the reference state by the enlarged rotational movement.

[0030] By setting the rotating wall portion 140 to the rotated state, in the power supply device 1, the portion blocked by the rotating wall portion 140 is opened. That is, by setting the rotating wall portion 140 to the rotated state, the opening 141 connected to the inner space 21 of the power supply device 1 is opened. When the opening 141 of the inner space 21 is opened, the inner space 21 is also opened. Therefore, at the location of the opened opening 141, it is possible to approach the inside of the power supply device 1 from the outside. Specifically, for example, an operator can touch the second electrical device 32, the battery stack 10, etc. arranged inside the power supply device 1 through the opening 141. That is, the power supply device 1 can be easily maintained and serviced because the rotating wall portion 140 is provided. Therefore, the power supply device 1 is excellent in maintainability.

[0031] Also, wiring may be provided inside the power supply device 1. Therefore, when performing maintenance and servicing of the power supply device 1 and involving disassembly work of removing the wall portion, attention needs to be paid to disconnection of the wiring and electric shock of the operator. However, in the power supply device 1, maintenance and servicing can be performed by rotating the rotating wall portion 140. That is, the power supply device 1 can be maintained safely and easily.

[0032] [Second Embodiment] In this embodiment, a power supply device including a crank-shaped wall portion group different from the above embodiment will be described. In the crank-shaped wall portion group according to this embodiment, the rotating wall portion is constituted by one wall portion. For the same configuration as in the above embodiment, the same reference numerals will be used for description. The schematic configuration of the power supply device 2 according to this embodiment is shown in FIG. 5.

[0033] The power supply device 2 has a crank-shaped wall portion group 206 different from the above-described form in a specific facing region 20 facing a specific side surface 12 of the battery stack 10. The crank-shaped wall portion group 206 has a first wall portion 210, a second wall portion 220, and a third wall portion 230.

[0034] The first wall portion 210 is a flat plate extending in the Y direction. The first wall portion 210 has a first end portion 211 and a second end portion 212 as end portions in the Y direction. Also, the first wall portion 210 of the present embodiment is provided facing the specific side surface 12 of the battery stack 10.

[0035] The second wall portion 220 is a flat plate extending in the X direction from the first end portion 211 of the first wall portion 210. The second wall portion 220 has a first end portion 221 and a second end portion 222 as end portions in the X direction. Also, the second wall portion 220 of the present embodiment is provided so as to extend from the first end portion 211 of the first wall portion 210 toward the specific side surface 12 of the battery stack 10.

[0036] The third wall portion 230 is a flat plate extending in the Y direction from the second end portion 222 which is the end of the second wall portion 220 on the side far from the first wall portion 210. The third wall portion 230 has a first end portion 231 and a second end portion 232 as end portions in the Y direction. Also, the third wall portion 230 of the present embodiment is provided so as to extend from the second end portion 222 of the second wall portion 220 toward the side opposite to the first wall portion 210. The crank-shaped wall portion group 206 has a shape that is recessed toward the battery stack 10 side in the portion of the third wall portion 230 rather than in the portion of the first wall portion 210.

[0037] In the crank-shaped wall portion group 206, the first wall portion 210 extends from the first end portion 221 of the second wall portion 220 in a direction intersecting the second wall portion 220. Also, the third wall portion 230 extends from the second end portion 222 of the second wall portion 220 in a direction opposite to the first wall portion 210. That is, also for the crank-shaped wall portion group 206 of the present embodiment, in the reference state, it has the same shape as in the above-described form. Note that the power supply device 2 also has an upper wall and a lower wall as in the above-described form.

[0038] The crank-shaped wall portion group 206 has a hinge portion 250. The hinge portion 250 is provided so as to connect the first end portion 211 of the first wall portion 210 and the first end portion 221 of the second wall portion 220. The second wall portion 220 and the third wall portion 230 are fixed so as not to rotate or the like.

[0039] In the crank-shaped wall portion group 206 of the present embodiment, the first wall portion 210 is a rotatable wall portion with respect to the second wall portion 220. The direction of rotational movement of the first wall portion 210, which is a rotatable wall portion, is the direction in which the angle between the first wall portion 210 and the second wall portion 220 widens, as indicated by an arrow C in FIG. 5. Thereby, the first wall portion 210 can take a reference state before the enlarged rotational movement and a rotational state after the enlarged rotational movement from the reference state. Further, the first wall portion 210 can also perform a return rotational movement from the rotational state to the reference state. In FIG. 5, the first wall portion 210 in the reference state is shown by a solid line, and the first wall portion 210 in the rotational state is shown by a two-dot chain line.

[0040] The crank-shaped wall portion group 206 of the present embodiment is provided with a first electric device 34 and a second electric device 35. Specifically, the first electric device 34 is attached to an outer surface 213, which is a surface on the outer space 22 side of the first wall portion 210. The second electric device 35 is attached to an inner surface 214, which is the back surface of the outer surface 213 of the first wall portion 210. Note that no particular device or the like is attached to the outer surface 233 of the third wall portion 230 of the crank-shaped wall portion group 206.

[0041] Then, by setting the first wall portion 210 of the crank-shaped wall portion group 206 to the rotational state, an opening 241 is formed in the power supply device 2. For this reason, also in the power supply device 2, it is possible to approach the inside from the outside at the location of the opening 241. Further, by setting the crank-shaped wall portion group 206 to the rotational state, the second electric device 35 provided on the inner surface 214 of the first wall portion 210 can be exposed to the outside of the power supply device 2.

[0042] In addition, in the crank-shaped wall portion group 206 in which the first wall portion 210 is in a rotating state, the outer surface 213 of the first wall portion 210 faces the outer surface 233 of the third wall portion 230. The first electrical device 34 provided on the outer surface 213 of the first wall portion 210 is accommodated in a portion of the third wall portion 230 that is recessed toward the battery stack 10 side in the crank-shaped wall portion group 206. In this way, the crank-shaped wall portion group 206 has a shape that can avoid the first electrical device 34 in the rotating state.

[0043] Therefore, in the crank-shaped wall portion group 206, a sufficient amount of movement related to the enlarged rotational movement can be ensured. As a result, the second electrical device 35 can be sufficiently exposed to the outside of the power supply device 2. That is, the power supply device 2 of the present embodiment can easily perform maintenance and preservation of the second electrical device 35. Therefore, the power supply device 2 also has a structure with high space efficiency. Furthermore, the power supply device 2 can also be safely maintained.

[0044] [Third Embodiment] In this embodiment, a power supply device having a configuration different from the above embodiment will be described. The power supply device according to this embodiment includes a blower, and thus can adjust the temperature of the battery stack. Regarding the same configuration as in the above embodiment, the same reference numerals will be used for description. The schematic configuration of the power supply device 3 according to this embodiment is shown in FIG. 6.

[0045] As shown in FIG. 6, the power supply device 3 includes a battery stack 10, a fuel cell stack 16, and a wall portion 300. The fuel cell stack 16 has a plurality of fuel cells 17. The fuel cell 17 can generate electricity by the supplied gas fuel. The fuel cell stack 16 is accommodated in a fuel cell accommodation space 19 provided in the power supply device 3.

[0046] The wall portion 300 is provided so as to separate the battery stack accommodation space 15 and the fuel cell accommodation space 19 from the outside. The wall portion 300 has a first side wall portion 101, a second side wall portion 301, a third side wall portion 302, and a fourth side wall portion 303 that constitute the side surfaces. Further, the wall portion 300 has a partition wall portion 304 that separates the battery stack accommodation space 15 and the fuel cell accommodation space 19. The first side wall portion 101, the second side wall portion 301, the third side wall portion 302, the fourth side wall portion 303, and the partition wall portion 304 are all located outside the specific facing region 20.

[0047] Further, the wall portion 300 has a crank-shaped wall portion group 106 in the specific facing region 20. In this embodiment, the hinge portion 150 of the crank-shaped wall portion group 106 has a drive source 151. The drive source 151 can rotate the rotating wall portion 140. Thereby, the drive source 151 can switch the crank-shaped wall portion group 106 from one of the reference state and the rotating state to the other. As the drive source 151, for example, a motor or the like can be used. Note that the power supply device 3 also has an upper wall and a lower wall as in the above-described embodiment.

[0048] In the crank-shaped wall portion group 106 of the power supply device 3, a first electric device 36 and a second electric device 37 are provided on the outer surface 113 of the first wall portion 110. Further, a third electric device 38 is provided on the outer surface 133 of the third wall portion 130. Both the first electric device 36 and the second electric device 37 have a shorter protruding length from the outer surface 113 of the first wall portion 110 than the protruding length of the third electric device 38 from the outer surface 133 of the third wall portion 130.

[0049] Further, a blower 40 is provided between the first wall portion 110 and the battery stack 10. That is, the blower 40 is provided in the inner space 21. Specifically, it is provided between the first wall portion 110 and the specific side surface 12 of the battery stack 10. Therefore, as shown in FIG. 6, also in the power supply device 3 of this embodiment, the crank-shaped wall portion group 106 and the electric devices and the like provided around it are compact. That is, the power supply device 3 also has high space efficiency.

[0050] The blower 40 of this embodiment has a fan 41 and a heater 42. The blower 40 can take a blowing state in which the fan 41 operates and a blowing stop state in which the operation of the fan 41 stops. The blower 40 is provided with its back facing the first wall portion 110 side and its front facing the battery stack 10 side. The blower 40 in the blowing state can generate an air flow D flowing forward.

[0051] As shown in FIG. 6, the air flow D is directed toward the battery stack 10 side. The heater 42 can take a heating state in which the gas passing through the blower 40 is heated and a heating stop state in which the heating is stopped.

[0052] In this embodiment, the first wall portion 110, which is a non-rotating wall portion, is formed with ventilation holes 115 penetrating from the outer surface 113 to the inner surface 114. Therefore, when the blower 40 is in the blowing state, the air in the outer space 22 is sucked toward the inner space 21 side through the ventilation holes 115. For this reason, in the outer space 22, an air flow E toward the first wall portion 110 is generated. Thereby, the blower 40 in the blowing state can take in air from the outer space 22 to the inner space 21 and flow the taken-in air toward the battery stack 10 side. That is, the blower 40 can send the outside air as cold air as it is to the battery stack 10 side. Or, the blower 40 can send the warm air obtained by heating the outside air to the battery stack 10 side. A plurality of ventilation holes 115 are provided in the first wall portion 110 of this embodiment. Note that the number, size, arrangement, etc. of the ventilation holes 115 can be appropriately set to appropriate values.

[0053] The power supply device 3 includes a ventilation duct 310. The ventilation duct 310 extends from an upstream port 311 which is an opening on the crank-shaped wall portion group 106 side to a downstream port 312 which is an opening provided in the third side wall portion 302. The ventilation duct 310 of this embodiment is provided along the fuel cell stack 16.

[0054] Inside the ventilation duct 310, gas fuel supplied to the fuel cells 17 of the fuel cell stack 16 may flow in. For example, if the gas fuel flows out after being supplied to the fuel cell stack 16 but before being consumed in power generation, the outflowing gas fuel flows into the ventilation duct 310. The downstream port 312 opens to the outside of the power supply device 3. The ventilation duct 310 constitutes a path for discharging the gas fuel flowing in from the fuel cell stack 16 to the outside of the power supply device 3 through the downstream port 312.

[0055] The power supply device 3 includes a discharge pipe 320. The discharge pipe 320 is connected to the fuel cell stack 16 at the inflow side end 321, which is the end on the fuel cell stack 16 side. The discharge side end 322, which is the end opposite to the inflow side end 321 of the discharge pipe 320, opens to the outside of the power supply device 3. In the power supply device 3 of this embodiment, the discharge pipe 320 is provided so as to cross inside the ventilation duct 310. Note that the discharge pipe 320 may be provided such that at least a part thereof is along the ventilation duct 310 or passes through the inside of the ventilation duct 310.

[0056] In the fuel cell 17 of this embodiment, when power is generated by the supplied gas fuel, drainage occurs. The drainage generated in the fuel cell stack 16 flows into the inside of the discharge pipe 320 from the inflow side end 321. Thereafter, the drainage is discharged to the outside of the power supply device 3 from the discharge side end 322 of the discharge pipe 320.

[0057] Further, the power supply device 3 has an environmental temperature detection unit 50, a battery temperature detection unit 51, a gas fuel concentration detection unit 52, and a drainage temperature detection unit 53. In the power supply device 3 of this embodiment, the environmental temperature detection unit 50 is provided in the outer space 22. Thereby, the environmental temperature detection unit 50 can detect the environmental temperature of the power supply device 3. That is, the environmental temperature detection unit 50 can detect the environmental temperature indicated by the temperature of the air taken into the inner space 21 by the blower 40 in the blowing state. The battery temperature detection unit 51 is provided in the battery stack 10. The battery temperature detection unit 51 can detect the battery temperature indicated by the temperature of the battery stack 10.

[0058] The gas fuel concentration detector 52 is provided in the ventilation duct 310. The gas fuel concentration detector 52 can detect the gas fuel concentration that indicates the concentration of the gas fuel in the ventilation duct 310. The drain temperature detector 53 is provided in the drain pipe 320. The drain temperature detector 53 can detect the drain temperature that indicates the temperature of the drain passing through the drain pipe 320. Note that the ambient temperature detector 50, the battery temperature detector 51, the gas fuel concentration detector 52, and the drain temperature detector 53 only need to be able to detect the necessary detected values, and the installation locations are not limited to the above.

[0059] In the power supply device 3, the control unit that controls the drive source 151 and the blower 40 is, for example, the first electrical device 36. The first electrical device 36 performs state control processing for controlling the drive source 151 and the blower 40 so that each part of the power supply device 3 functions properly based on the detected values by the ambient temperature detector 50, the battery temperature detector 51, the gas fuel concentration detector 52, and the drain temperature detector 53. For example, the first electrical device 36 can perform control to switch the blower 40 from the blowing state to the blowing stop state. Also, for example, the first electrical device 36 can perform control to switch the crank-shaped wall portion group 106 from the reference state to the rotating state by driving the drive source 151. Note that the control unit may be an electrical device other than the first electrical device 36 provided in the crank-shaped wall portion group 106. Also, for example, the control unit can be provided at a location other than the crank-shaped wall portion group 106.

[0060] FIG. 7 shows the power supply device 3 when the crank-shaped wall portion group 106 is in the rotating state. As shown in FIG. 7, when the crank-shaped wall portion group 106 is in the rotating state, the opening 141 is opened. The opened opening 141 is connected to the upstream port 311 of the ventilation duct 310. Thereby, the ventilation duct 310 is connected to the inner space 21.

[0061] FIG. 7 shows the air flow when the blower 40 is in the blowing state while the crank-shaped wall group 106 is in the rotating state. As shown in FIG. 7, when the blower 40 is in the blowing state, an air flow D is generated in the inner space 21 and an air flow E is generated in the outer space 22. Further, since the inner space 21 and the ventilation duct 310 are connected, an air flow F is generated.

[0062] The air flow F is an air flow directed from the inner space 21 through its opening 141 toward the ventilation duct 310. Further, the air flow F flows through the ventilation duct 310 from the upstream port 311 to the downstream port 312 and flows out from the downstream port 312 to the outside of the power supply device 3. Thus, when the blower 40 is in the blowing state while the crank-shaped wall group 106 is in the rotating state, at least a part of the air taken in from the outer space 22 to the inner space 21 passes through the ventilation duct 310 and is discharged to the outside of the power supply device 3. At this time, if there is gas fuel flowing into the ventilation duct 310, the gas fuel is discharged to the outside of the power supply device 3 together with the air by the air flow F.

[0063] Next, the state control process performed by the power supply device 3 will be described. FIG. 8 is a flowchart showing the procedure of the state control process performed by the first electrical device 36 which is a control unit. As shown in FIG. 8, in the state control process, the first electrical device 36 first determines whether or not it is in a high gas fuel concentration state (S101). The high gas fuel concentration state is a state in which the gas fuel concentration in the ventilation duct 310 detected by the gas fuel concentration detection unit 52 is higher than a predetermined upper limit gas fuel concentration.

[0064] When the gas fuel is in a high-concentration state (YES in S101), the crank-shaped wall portion group 106 is set to a rotating state (S102). If the crank-shaped wall portion group 106 is already in a rotating state, that state is maintained. Further, the blower 40 is set to a blowing state (S103) and a heating stop state (S104). If the blower 40 is already in a blowing state and a heating stop state, that state is maintained. Thereby, the gas fuel existing in the ventilation duct 310 can be discharged to the outside of the power supply device 3. Therefore, it is possible to suppress the accumulation of gas fuel in a location where gas fuel usually does not exist inside the power supply device 3 and the like.

[0065] Also, when the gas fuel is not in a high-concentration state (NO in S101), it is determined whether the drained liquid is in a low-temperature state (S105). The drained liquid low-temperature state is a state in which the temperature of the drained liquid in the discharge pipe 320 detected by the drained liquid temperature detection unit 53 is lower than a predetermined lower drained liquid concentration.

[0066] When the drained liquid is in a low-temperature state (YES in S105), the crank-shaped wall portion group 106 is set to a rotating state (S106). If the crank-shaped wall portion group 106 is already in a rotating state, that state is maintained. Next, it is determined whether it is in a first environmental low-temperature state (S107). The first environmental low-temperature state is a state in which the environmental temperature detected by the environmental temperature detection unit 50 is lower than a predetermined first environmental lower limit temperature. The first environmental lower limit temperature is a temperature at which the drained liquid low-temperature state is eliminated when air at that temperature passes through the ventilation duct 310.

[0067] When the first environmental temperature is in a low temperature state (YES in S107), the blower 40 is set to the blowing state (S108) and the heating state (S109). If the blower 40 is already in the blowing state and the heating state, that state is maintained. When the first environmental temperature is not in the low temperature state (NO in S107), the blower 40 is set to the blowing state (S110) and the heating stop state (S111). If the blower 40 is already in the blowing state and the heating stop state, that state is maintained. Thereby, it is possible to suppress the drainage liquid inside the discharge pipe 320 from freezing. Further, even if the drainage liquid is frozen inside the discharge pipe 320, the frozen drainage liquid can be melted. Therefore, the drainage liquid can be appropriately discharged from the power supply device 3. Further, when the environmental temperature is sufficiently high, only blowing can be performed without heating by the heater 42. Thereby, power consumption can be reduced.

[0068] Also, when the drainage liquid is not in the low temperature state (NO in S105), the crank-shaped wall portion group 106 is set to the reference state (S112). If the crank-shaped wall portion group 106 is already in the reference state, that state is maintained. Thereby, the crank-shaped wall portion group 106 restricts the inflow of gas into the ventilation duct 310 by the air flow generated by the blower 40 in the blowing state more than when it is in the rotating state. That is, the flow of air from the inner space 21 to the ventilation duct 310 is blocked, and when the blower 40 is in the blowing state, a sufficient air flow D toward the battery stack 10 can be ensured.

[0069] Furthermore, it is determined whether the battery is in a low temperature state (S113). The battery low temperature state is a state in which the battery temperature detected by the battery temperature detection unit 51 is lower than a predetermined lower limit battery temperature. In this embodiment, the lower limit battery temperature is the lower limit value of the appropriate battery temperature range in which the battery cells 11 in the battery stack 10 can sufficiently exhibit their charge and discharge performance.

[0070] When the battery is in a low-temperature state (YES in S113), it is determined whether it is in a second environmental low-temperature state (S114). The second environmental low-temperature state is, for example, a state in which the environmental temperature detected by the environmental temperature detection unit 50 is lower than the environmental temperature detected by the environmental temperature detection unit 50. Also, for example, the second environmental low-temperature state is a state in which the environmental temperature detected by the environmental temperature detection unit 50 is lower than a predetermined second environmental lower limit temperature. The second environmental lower limit temperature is the temperature at which the battery low-temperature state is eliminated when air at that temperature is supplied to the battery stack 10.

[0071] When it is in the second environmental low-temperature state (YES in S114), the blower 40 is set to the blowing state (S115) and the heating state (S116). When the blower 40 is already in the blowing state and the heating state, that state is maintained. When it is not in the second environmental low-temperature state (NO in S114), the blower 40 is set to the blowing state (S117) and the heating stop state (S118). When the blower 40 is already in the blowing state and the heating stop state, that state is maintained. Thereby, the battery temperature of the battery stack 10 lower than the lower limit value of the appropriate battery temperature range can be raised to the appropriate battery temperature range. Thus, the charge and discharge performance of the battery stack 10 can be fully exhibited. Also, when the environmental temperature is sufficiently high, only blowing can be performed without heating by the heater 42. Thereby, power consumption can be reduced.

[0072] When the battery is not in the low-temperature state (NO in S113), it is determined whether the battery is in a high-temperature state (S119). The battery high-temperature state is a state in which the battery temperature detected by the battery temperature detection unit 51 is higher than a predetermined upper limit battery temperature. In this embodiment, the upper limit battery temperature is the upper limit value of the appropriate battery temperature range of the battery stack 10.

[0073] When the battery is in the high-temperature state (YES in S119), it is determined whether it is in a third environmental low-temperature state (S120). The third environmental low-temperature state is, for example, a state in which the environmental temperature detected by the environmental temperature detection unit 50 is lower than the battery temperature detected by the battery temperature detection unit 51.

[0074] When the third environmental temperature is in a low-temperature state (YES in S120), the blower 40 is set to the air-blowing state (S121) and the heating stop state (S122). If the blower 40 is already in the air-blowing state and the heating stop state, that state is maintained. Thereby, the battery temperature of the battery stack 10, which is higher than the upper limit value of the appropriate battery temperature range, can be lowered to the appropriate battery temperature range. Therefore, the charge and discharge performance of the battery stack 10 can be fully exhibited.

[0075] When the battery is not in a high-temperature state (NO in S119), the blower 40 is set to the air-blowing stop state (S123) and the heating stop state (S124). If the blower 40 is already in the air-blowing stop state and the heating stop state, that state is maintained. When the battery is neither in a low-temperature state nor in a high-temperature state, the battery temperature is within the appropriate battery temperature range. Also, since it is neither in the high-concentration gas fuel state nor in the low-temperature drain state, in such a case, the blower 40 can be stopped to reduce the power consumption.

[0076] Also, even when the battery is in a high-temperature state (YES in S120), when the third environmental temperature is not in a low-temperature state (NO in S120), the blower 40 is set to the air-blowing stop state (S123) and the heating stop state (S124). Even when the battery is in a high-temperature state, when the environmental temperature is high, it is not preferable to supply such air to the battery stack 10. This is because there is a possibility that the temperature of the battery stack 10 may further increase. Therefore, in such a case, the blower 40 can be stopped so that the battery temperature does not increase any further.

[0077] As described above, in the state control process, processes related to gas fuel discharge (S101 to S104), processes related to drainage melting (S105 to S111), processes related to battery temperature adjustment (S112 to S122), and processes related to steady state (S123, S124) are performed. As a configuration therefor, the crank-shaped wall portion group 106 is used. That is, the highly space-efficient crank-shaped wall portion group 106 is used to discharge gas fuel, melt drainage, and adjust the battery temperature. Therefore, it is not necessary to separately provide a shutter for opening and closing the inner space 21 and the ventilation duct 310. Further, in the power supply device 3 of the present embodiment, the blower 40 is disposed between the first wall portion 110 having a margin in space and a specific side surface 12 of the battery stack 10. Thereby, it is possible to suppress a situation where a configuration for directly adjusting the battery temperature is provided to the battery stack and the battery stack becomes large. That is, the space efficiency of the power supply device 3 is further improved.

[0078] Further, in the power supply device 3, the blower 40 is disposed at a position close to other first electrical devices 36 and the like. That is, the mounted devices other than the battery stack 10 and the fuel cell stack 16 can be collectively disposed in the vicinity of the crank-shaped wall portion group 106. Therefore, the power supply device 3 is easy to maintain.

[0079] Note that, for example, in the state control process, each part may be controlled regardless of the environmental temperature. For example, in the process related to drainage melting, when the drainage is in a low temperature state, the blower 40 can always be in a blowing state and a heating state. Also, for example, in the process related to battery temperature adjustment, when the battery is in a low temperature state, the blower 40 can always be in a blowing state and a heating state. Also, for example, in the process related to battery temperature adjustment, when the battery is in a high temperature state, the blower 40 can always be in a blowing state and a heating stop state.

[0080] For example, a blower 40 without a heater 42 can also be used. In this case, the processes related to drain liquid melting and the processes for the case of a low battery temperature among the processes related to battery temperature adjustment may be omitted. Also, in this case, in the case of gas fuel discharge or a high battery temperature, it is not necessary to perform control related to the heating state or the heating stop state for the blower 40.

[0081] For example, the power supply device 3 may be configured to omit the configuration related to the fuel cell stack 16. In this case, the processes related to gas fuel discharge and the processes related to drain liquid melting, which are the processes related to the fuel cell stack 16, may be omitted. For example, it is also possible to use a blower 40 without a heater 42 while omitting the configuration related to the fuel cell stack 16.

[0082] [Fourth Embodiment] In this embodiment, a power supply device including a crank-shaped wall portion group different from the above embodiment will be described. In the crank-shaped wall portion group according to this embodiment, the rotating wall portion is constituted by one wall portion. Note that the same components as those in the above embodiment will be described with the same reference numerals. The schematic configuration of the power supply device 4 according to this embodiment is shown in FIG. 9.

[0083] The power supply device 4 has a crank-shaped wall portion group 406 different from the above embodiment in a specific facing region 20 facing a specific side surface 12 of the battery stack 10. The configuration other than the crank-shaped wall portion group 406 is the same as that of the power supply device 3 according to the third embodiment. The crank-shaped wall portion group 406 has a first wall portion 410, a second wall portion 420, and a third wall portion 430. Note that the power supply device 4 also has an upper wall and a lower wall, similar to the above embodiment.

[0084] The first wall portion 410 is a flat plate shape extending in the X direction. The first wall portion 410 has a first end portion 411 on the specific side surface 12 side of the battery stack 10 and a second end portion 412 opposite to the first end portion 411. The first wall portion 410 of this embodiment extends toward the specific side surface 12 of the battery stack 10.

[0085] The second wall portion 420 is a flat plate extending in the Y direction from the first end portion 411 of the first wall portion 410. The second wall portion 420 has a first end portion 421 and a second end portion 422 as end portions in the Y direction. The second wall portion 420 is provided facing a specific side surface 12 of the battery stack 10.

[0086] The third wall portion 430 is a flat plate extending in the X direction from the second end portion 422 which is the end of the second wall portion 420 far from the first wall portion 410. The third wall portion 430 has a first end portion 431 and a second end portion 432 as end portions in the X direction. Also, the third wall portion 430 of the present embodiment is provided so as to extend from the second end portion 422 of the second wall portion 420 toward the side opposite to the first wall portion 410.

[0087] Thus, the crank-shaped wall portion group 406 has the first wall portion 410 extending from the first end portion 421 of the second wall portion 420 to the side opposite to the specific side surface 12 side, and the third wall portion 430 extending from the second end portion 422 of the second wall portion 420 to the specific side surface 12 side. Also, in the crank-shaped wall portion group 406 of the power supply device 4, the first electric device 36, the second electric device 37, and the third electric device 38 are provided. The first electric device 36 is provided on the first surface 413 which is the surface of the first wall portion 410 on the second wall portion 420 side. The second electric device 37 and the third electric device 38 are provided on the outer surface 423 of the second wall portion 420.

[0088] Therefore, the crank-shaped wall portion group 406 of the present embodiment can be made smaller than, for example, the case where the first electric device 36, the second electric device 37, and the third electric device 38 are arranged side by side on the same surface, which is different from the present embodiment. Specifically, the length L8 of the crank-shaped wall portion group 406 in the Y direction can be made shorter. That is, the area of the battery stack 10 in the power supply device 4 can be made smaller. As a result, the power supply device 4 also has a highly space-efficient structure that enables overall miniaturization.

[0089] Further, in this embodiment, the third wall portion 430 serves as a rotating wall portion. That is, the hinge portion 450 of the crank-shaped wall portion group 406 is provided so as to connect the second end portion 422 of the second wall portion 420 and the first end portion 431 of the third wall portion 430. Thereby, the third wall portion 430, which is a rotating wall portion, can take a reference state shown by a solid line in FIG. 9 and a rotating state shown by a two-dot chain line. The hinge portion 450 also has a drive source 451. The drive source 451 can be controlled by the first electric device 36 which is a control portion.

[0090] Also in the power supply device 4, a blower 40 is provided in the inner space 21. The blower 40 is provided with its back facing the second wall portion 420 side and its front facing the battery stack 10 side. A ventilation hole 425 is provided in the second wall portion 420 located on the back side of the blower 40. And also in the power supply device 4, when the third wall portion 430, which is a rotating wall portion, is in a rotating state, the opening 141 is opened. Thereby, the inner space 21 and the ventilation duct 310 can be connected.

[0091] For this reason, also in the power supply device 4, it is possible to set the blower 40 to a blowing state while setting the crank-shaped wall portion group 406 to a reference state. Further, by setting the blower 40 to a blowing state while setting the crank-shaped wall portion group 406 to a rotating state, an air flow F passing through the ventilation duct 310 can be generated. Therefore, also for the power supply device 4 according to this embodiment, similar to the power supply device 3 according to the third embodiment, state control processing can be performed. Accordingly, also in the power supply device 4, improvements in space efficiency are achieved, such as not having to separately provide a shutter for opening and closing the inner space 21 and the ventilation duct 310.

[0092] [Fifth Embodiment] In this embodiment, a power supply device including a crank-shaped wall portion group having a configuration different from that of the above embodiment will be described. Note that the same components as those in the above embodiment will be described with the same reference numerals. The schematic configuration of the power supply device 5 according to this embodiment is shown in FIG. 10.

[0093] The power supply device 5 has a crank-shaped wall portion group 506 different from the above-described form in a specific facing region 20 facing a specific side surface 12 of the battery stack 10. The crank-shaped wall portion group 506 has a first wall portion 510, a second wall portion 520, and a third wall portion 530. Note that the power supply device 5 also has an upper wall and a lower wall, similar to the above-described form.

[0094] The first wall portion 510 is a flat plate extending in the X direction. The first wall portion 510 has a first end portion 511 on the specific side surface 12 side of the battery stack 10 and a second end portion 512 on the side opposite to the first end portion 511. The first wall portion 510 of the present embodiment extends toward the specific side surface 12 of the battery stack 10.

[0095] The second wall portion 520 is a flat plate extending in the Y direction from the first end portion 511 of the first wall portion 510. The second wall portion 520 has a first end portion 521 and a second end portion 522 as end portions in the Y direction. The second wall portion 520 is provided to face the specific side surface 12 of the battery stack 10.

[0096] The third wall portion 530 is a flat plate extending in the X direction from the second end portion 522, which is the end of the second wall portion 520 far from the first wall portion 510. The third wall portion 530 has a first end portion 531 and a second end portion 532 as end portions in the X direction. Also, for the third wall portion 530 of the present embodiment, it is provided so as to extend from the second end portion 522 of the second wall portion 520 toward the side opposite to the first wall portion 510. Further, a first electrical device 36 is provided on the first surface 513 of the first wall portion 510, and a second electrical device 37 and a third electrical device 38 are provided on the outer surface 523 of the second wall portion 520.

[0097] A blower 40 having a fan 41 and a heater 42 is provided between the second wall portion 520 and the battery stack 10. That is, the blower 40 is provided in the inner space 21. In the blowing state, the blower 40 of the present embodiment generates an air flow G from the third wall portion 530 toward the first side wall portion 101. By heading toward the first side wall portion 101, the air flow G then heads toward the battery stack 10 as shown in FIG. 10. That is, also for the blower 40 of the present embodiment, an air flow G heading toward the battery stack 10 can be generated.

[0098] A ventilation hole 535 is provided in the third wall portion 530 located on the back side of the blower 40. Therefore, when the blower 40 is in the blowing state, the air in the outer space 22 is sucked toward the inner space 21 through the ventilation hole 535. For this reason, in the outer space 22, an air flow H toward the third wall portion 530 is generated. Thereby, the blower 40 in the blowing state can take in air from the outer space 22 into the inner space 21 and flow the taken-in air toward the battery stack 10. Also for the power supply device 5 according to the present embodiment, similar to the power supply device 3 according to the third embodiment, processing related to battery temperature adjustment can be performed. Control therefor can be performed by the first electrical device 36 which is a control unit.

[0099] Therefore, also in the power supply device 5 of the present embodiment, the length L9 in the Y direction of the crank-shaped wall portion group 506 can be made shorter than the case where the first electrical device 36, the second electrical device 37, and the third electrical device 38 are arranged side by side on the same plane. Thereby, also for the power supply device 5, it has a structure with high space efficiency that enables downsizing as a whole.

[0100] Further, in the power supply device 5, the first wall portion 510 and the second wall portion 520 constitute a rotating wall portion 540. That is, the hinge portion 550 of the crank-shaped wall portion group 506 is provided so as to connect the second end portion 522 of the second wall portion 520 and the first end portion 531 of the third wall portion 530. Thereby, the rotating wall portion 540 can take the reference state shown by the solid line in FIG. 10 and the rotating state shown by the two-dot chain line.

[0101] In the power supply device 5, by rotating the rotating wall portion 540, the opening 541 connected to the inner space 21 can be opened. That is, also in the power supply device 5, due to the provision of the rotating wall portion 540, maintenance, preservation, etc. can be easily performed. Therefore, the power supply device 5 is also excellent in maintainability.

[0102] Note that the blower used in the power supply device 5 may, for example, blow the air sucked from the side of the third wall portion 530 toward the battery stack 10 side. Thereby, an air flow toward the battery stack 10 side can be more generated.

[0103] As described in detail above, the power supply devices 1 to 5 according to the above embodiment include the battery stack 10 and the crank-shaped wall portion group provided adjacent to the battery stack 10. The crank-shaped wall portion groups of the power supply devices 1 to 5 are the crank-shaped wall portion groups 106, 206, 406, and 506, respectively. Each of the crank-shaped wall portion groups 106, 206, 406, and 506 has a first wall portion, a second wall portion, and a third wall portion. The first wall portion extends in a first direction that is the X direction or the Y direction. The second wall portion extends from one end of the first wall portion in a second direction intersecting the first direction. The third wall portion extends from the end of the second wall portion on the side far from the first wall portion in a third direction intersecting the second direction. Thereby, a power supply device having a high space efficiency structure is realized. Specifically, for example, by arranging the electrical equipment installed in the crank-shaped wall portion group according to its shape and size, the power supply device as a whole can be made smaller than in the case where a wall portion structure having a shape such as the crank-shaped wall portion group is not adopted. Also, for example, by making a part of the crank-shaped wall portion group a rotatable wall portion that can rotate and move, it is also possible to control the air flow without providing a special shutter or the like.

[0104] Each of the above embodiments is merely an example and does not limit the present disclosed technology in any way. Therefore, the present disclosed technology can naturally be variously improved and modified without departing from its gist.

[0105] For example, the arrangement of electrical equipment and the like in the power supply device shown in the above embodiment is merely an example. That is, for example, it is also possible to configure the power supply device with the Y direction as the vertical direction. Also, for example, the application target of the above embodiment has no particular limitation regarding the battery type (types such as nickel-metal hydride batteries and lithium-ion batteries).

[0106] Also, the disclosed technology described above includes the following means 1 to means 8. [Means 1] The power supply device according to claim 1, wherein the second wall portion and the third wall portion are integrated and can perform an enlarged rotational movement that rotates with respect to the first wall portion in a direction in which the angle between the first wall portion and the second wall portion widens, and the wall portion takes a reference state before the rotational wall portion performs the enlarged rotational movement and a rotational state after the rotational wall portion performs the enlarged rotational movement from the reference state.

[0107] [Means 2] The power supply device according to claim 1, wherein the first wall portion is a rotational wall portion that can perform an enlarged rotational movement that rotates with respect to the second wall portion in a direction in which the angle between the first wall portion and the second wall portion widens, and the wall portion takes a reference state before the rotational wall portion performs the enlarged rotational movement and a rotational state after the rotational wall portion performs the enlarged rotational movement from the reference state.

[0108] [Means 3] The power supply device according to any one of claim 1, means 1, or means 2, wherein the first wall portion is provided to face a specific side surface among the side surfaces of the battery stack, the second wall portion extends from the one end of the first wall portion toward the specific side surface side, and the third wall portion extends from the end of the second wall portion on the specific side surface side toward the side opposite to the first wall portion.

[0109] [Means 4] A power supply device according to any one of means 1 to 3, In the non-rotating wall portion among the first wall portion, the second wall portion, and the third wall portion, which is not the rotating wall portion, ventilation holes are provided through which gas can pass from a first space on the side opposite to the battery stack side to a second space on the battery stack side. A battery temperature detection unit that detects a battery temperature that indicates the temperature of the battery stack, A blower provided in the second space and capable of taking a blowing state that generates an air flow toward the battery stack side, And a control unit that controls at least the blower, The control unit, A power supply device that may put the blower in the blowing state when the battery temperature is in a battery high temperature state higher than a predetermined upper limit battery temperature.

[0110] [Means 5] A power supply device according to means 4, The blower has a heater capable of taking a heating state that heats the passing gas, The control unit, A power supply device that may put the blower in the blowing state and the heating state when the battery temperature is in a battery low temperature state lower than a predetermined lower limit battery temperature.

[0111] [Means 6] A power supply device according to means 4 or means 5, A fuel cell stack including a plurality of fuel cells that generate power by supplied gas fuel, A ventilation duct that constitutes a path for discharging the gas fuel flowing in from the fuel cell stack to the outside, A gas fuel concentration detection unit that detects a gas fuel concentration that indicates the concentration of the gas fuel in the ventilation duct, And a drive source that switches the wall portion from one of the reference state and the rotating state to the other, The wall portion, In the rotating state, the airflow generated by the blower in the blowing state allows gas to flow into the ventilation duct. In the reference state, the airflow generated by the blower in the blowing state restricts the inflow of gas into the ventilation duct more than when in the rotating state. The control unit When the gas fuel concentration is in a high gas fuel concentration state higher than a predetermined upper limit gas fuel concentration, a power supply device that sets the wall portion in the rotating state and the blower in the blowing state.

[0112] [Means 7] The power supply device according to means 5, A fuel cell stack including a plurality of fuel cell cells that generate electricity using the supplied gas fuel, A discharge pipe that discharges the drainage generated in the fuel cell stack to the outside, A drainage temperature detection unit that detects a drainage temperature that indicates the temperature of the drainage passing through the discharge pipe, A ventilation duct through which the airflow generated by the blower may pass, A drive source that switches the wall portion from one of the reference state and the rotating state to the other, At least a part of the discharge pipe is provided so as to pass along or inside the ventilation duct, The wall portion In the rotating state, the airflow generated by the blower in the blowing state allows gas to flow into the ventilation duct. In the reference state, the airflow generated by the blower in the blowing state restricts the inflow of gas into the ventilation duct more than when in the rotating state. The control unit When the drainage temperature is in a low drainage temperature state lower than a predetermined lower limit drainage temperature, a power supply device that may set the wall portion in the rotating state and the blower in the blowing state and the heating state.

[0113] [Means 8] The power supply device according to means 7, wherein the ventilation duct constitutes a path for discharging the gas fuel flowing in from the fuel cell stack to the outside, and has a gas fuel concentration detection unit that detects a gas fuel concentration serving as an index of the concentration of the gas fuel in the ventilation duct, wherein the control unit, when the gas fuel is in a high gas fuel concentration state where the gas fuel concentration is higher than a predetermined upper limit gas fuel concentration, is a power supply device that sets the blower in the blowing state while setting the wall portion in the rotating state.

Explanation of Signs

[0114] 1, 2, 3, 4, 5: Power supply device 10: Battery stack 11: Battery cell 12: Specific side surface 16: Fuel cell stack 17: Fuel cell 21: Inner space (second space) 22: Outer space (first space) 40: Blower 42: Heater 51: Battery temperature detection unit 52: Gas fuel concentration detection unit 53: Drain temperature detection unit 110, 210, 410, 510: First wall portion 115, 425, 535: Ventilation hole 120, 220, 420, 520: Second wall portion 130, 230, 430, 530: Third wall portion 140, 540: Rotating wall portion 151, 451: Driving source 310: Ventilation duct 320: Discharge pipe

Claims

1. A power supply device comprising a battery stack including a plurality of rechargeable battery cells, and a wall portion provided adjacent to the battery stack and capable of arranging electrical equipment, As the wall portion, A first wall portion extending in a first direction, A second wall portion extending from one end of the first wall portion in a second direction intersecting the first direction, A third wall portion extending from the end of the second wall portion far from the first wall portion in a third direction intersecting the second direction.

2. The power supply device according to claim 1, The second wall portion and the third wall portion are integrated and are a rotating wall portion capable of performing an enlarged rotational movement of rotating with respect to the first wall portion in a direction in which the angle between the first wall portion and the second wall portion widens, The wall portion takes a reference state before the rotating wall portion performs the enlarged rotational movement and a rotating state after the rotating wall portion performs the enlarged rotational movement from the reference state.

3. The power supply device according to claim 1, The first wall portion is a rotating wall portion capable of performing an enlarged rotational movement of rotating with respect to the second wall portion in a direction in which the angle between the first wall portion and the second wall portion widens, The wall portion takes a reference state before the rotating wall portion performs the enlarged rotational movement and a rotating state after the rotating wall portion performs the enlarged rotational movement from the reference state.

4. The power supply device according to any one of claims 1 to 3, The first wall portion is provided to face a specific side surface among the side surfaces of the battery stack, The second wall portion extends from the one end of the first wall portion toward the specific side surface side, The third wall portion extends from the end of the second wall portion on the specific side surface side toward the side opposite to the first wall portion.

5. The power supply device according to claim 2 or claim 3, In the non-rotating wall portions among the first wall portion, the second wall portion, and the third wall portion that are not the rotating wall portion, ventilation holes are provided that can allow gas to pass from a first space on the side opposite to the battery stack side to a second space on the battery stack side, A battery temperature detection unit that detects a battery temperature indicating the temperature of the battery stack, A blower provided in the second space and capable of taking a blowing state to generate an air flow toward the battery stack side, And a control unit that controls at least the blower, The control unit, A power supply device that may set the blower to the blowing state when the battery temperature is in a high battery temperature state higher than a predetermined upper limit battery temperature.

6. The power supply device according to claim 5, wherein the blower has a heater capable of taking a heating state for heating the passing gas, and the control unit is a power supply device that may set the blower to the blowing state and the heating state when the battery temperature is in a low battery temperature state lower than a predetermined lower limit battery temperature.

7. The power supply device according to claim 5, comprising a fuel cell stack including a plurality of fuel cells that generate electricity by supplied gas fuel, a ventilation duct that constitutes a path for discharging the gas fuel flowing in from the fuel cell stack to the outside, a gas fuel concentration detection unit that detects a gas fuel concentration indicating the concentration of the gas fuel in the ventilation duct, and a drive source for switching the wall portion from one of the reference state and the rotating state to the other, wherein the wall portion in the rotating state allows gas to flow into the ventilation duct by the air flow generated by the blower in the blowing state, and in the reference state, restricts the inflow of gas into the ventilation duct by the air flow generated by the blower in the blowing state more than when in the rotating state, and the control unit is a power supply device that sets the wall portion to the rotating state and the blower to the blowing state when the gas fuel concentration is in a high gas fuel concentration state higher than a predetermined upper limit gas fuel concentration.

8. The power supply device according to claim 6, comprising a fuel cell stack including a plurality of fuel cells that generate electricity by supplied gas fuel, a ventilation duct that constitutes a path for discharging the gas fuel flowing in from the fuel cell stack to the outside, a gas fuel concentration detection unit that detects a gas fuel concentration indicating the concentration of the gas fuel in the ventilation duct, and a drive source for switching the wall portion from one of the reference state and the rotating state to the other, wherein the wall portion in the rotating state allows gas to flow into the ventilation duct by the air flow generated by the blower in the blowing state, and in the reference state, restricts the inflow of gas into the ventilation duct by the air flow generated by the blower in the blowing state more than when in the rotating state, and the control unit A power supply device that, when the gas fuel concentration is in a high gas fuel concentration state higher than a predetermined upper limit gas fuel concentration, sets the blower to the blowing state while setting the wall portion to the rotating state.

9. The power supply device according to claim 6, including a fuel cell stack including a plurality of fuel cell cells that generate electricity using the supplied gas fuel; a discharge pipe that discharges the drainage generated in the fuel cell stack to the outside; a drainage temperature detection unit that detects a drainage temperature that indicates the temperature of the drainage passing through the discharge pipe; a ventilation duct through which the airflow generated by the blower may pass; and a drive source that switches the wall portion from one of the reference state and the rotating state to the other, at least a part of the discharge pipe is provided so as to pass along or inside the ventilation duct, the wall portion in the rotating state, allows gas to flow into the ventilation duct by the airflow generated by the blower in the blowing state, in the reference state, restricts the inflow of gas into the ventilation duct by the airflow generated by the blower in the blowing state more than when in the rotating state, the control unit a power supply device that, when the drainage temperature is in a low drainage temperature state lower than a predetermined lower limit drainage temperature, may set the blower to the blowing state and the heating state while setting the wall portion to the rotating state.

10. The power supply device according to claim 9, the ventilation duct constitutes a path for discharging the gas fuel flowing in from the fuel cell stack to the outside, having a gas fuel concentration detection unit that detects a gas fuel concentration that indicates the concentration of the gas fuel in the ventilation duct, the control unit a power supply device that, when the gas fuel concentration is in a high gas fuel concentration state higher than a predetermined upper limit gas fuel concentration, sets the blower to the blowing state while setting the wall portion to the rotating state.

Images