Outer package case unit, outer package case and electric facility

Abstract

To provide a technique that is flexibly adaptive to change in number of pieces of electric equipment.SOLUTION: An outer package case unit capable of storing a plurality of pieces of electric equipment comprises a first outer package case and a second outer package case, wherein the first outer package case has a first outer package part and a first enclosure part enclosing a first opening provided to the first outer package part and the second outer package case has a second outer package part and a second enclosure part enclosing a second opening provided to the second outer package part, the first enclosure part and second enclosure part being fittable to each other.SELECTED DRAWING: Figure 1

Description

Technical Field

[0001] The present invention relates to an exterior case unit, an exterior case, and electrical equipment.

Background Art

[0002] Patent Documents 1 and 2 disclose a battery device capable of coping with an increase in storage capacity.

Prior Art Documents

Patent Documents

[0003]

Patent Document 1

Patent Document 2

Summary of the Invention

Problems to be Solved by the Invention

[0004] When combining a plurality of storage batteries to form one battery unit, in order to avoid water droplets, dust, etc., the housings of all the storage batteries need to have an airtight structure, or a large housing assuming future addition of storage batteries is required. Also, when connecting a plurality of storage batteries, a waterproof connector for connecting between the storage batteries is required. Therefore, the unit price of the product increases, and the product size becomes larger.

[0005] In the battery device described in Patent Document 1, even when installing a storage battery with the minimum capacity, a housing for accommodating the storage battery with the maximum connectable capacity is required, and it is necessary to secure a large installation space. In the battery device described in Patent Document 2, since the storage battery is added in a place with many restrictions such as the inside of the cover, addition exceeding a predetermined number of storage batteries cannot be performed. The battery devices described in Patent Documents 1 and 2 cannot flexibly cope with changes in the number of storage batteries.

[0006] The present invention has been made in view of the above circumstances, and an object thereof is to provide a technology that can flexibly respond to changes in the number of electrical devices.

Means for Solving the Problems

[0007] According to one aspect of the present invention, there is provided an exterior case unit capable of accommodating a plurality of electrical devices, comprising a first exterior case and a second exterior case, wherein the first exterior case has a first exterior portion and a first surrounding portion surrounding a first opening provided in the first exterior portion, and the second exterior case has a second exterior portion and a second surrounding portion surrounding a second opening provided in the second exterior portion, and the first surrounding portion and the second surrounding portion are capable of being fitted together.

[0008] When the number of electrical devices accommodated in the exterior case unit is changed, it is possible to flexibly respond to the change in the number of electrical devices by changing the number of exterior cases in the exterior case unit.

[0009] A first sealing portion is provided in the first surrounding portion or the second surrounding portion, and when the first surrounding portion and the second surrounding portion are in a fitted state, the first sealing portion is disposed between the first surrounding portion and the second surrounding portion. Thereby, it is possible to prevent water droplets, dust, etc. from entering the interior of the exterior case unit from between the first surrounding portion and the second surrounding portion. Therefore, even when the number of electrical devices is changed, it is possible to maintain the airtightness inside the exterior case unit. Since the airtightness inside the exterior case unit is maintained, it is possible to use non-airtight electrical devices.

[0010] The above-mentioned exterior case unit further includes a third exterior case. The third exterior case has a third exterior portion, a third surrounding portion that surrounds a third opening provided in the third exterior portion, and a fourth surrounding portion that surrounds a fourth opening provided in the third exterior portion. The opening surface of the third opening and the opening surface of the fourth opening face each other. The first surrounding portion and the third surrounding portion are capable of being fitted together, and the second surrounding portion and the fourth surrounding portion are capable of being fitted together. When the number of electrical devices to be accommodated in the exterior case unit increases, by increasing the number of third exterior cases, it is possible to flexibly respond to changes in the number of electrical devices.

[0011] A second sealing portion is provided in the first surrounding portion or the third surrounding portion. When the first surrounding portion and the third surrounding portion are in a fitted state, the second sealing portion is disposed between the first surrounding portion and the third surrounding portion. A third sealing portion is provided in the second surrounding portion or the fourth surrounding portion. When the second surrounding portion and the fourth surrounding portion are in a fitted state, the third sealing portion is disposed between the second surrounding portion and the fourth surrounding portion. Thereby, it is possible to prevent water droplets, dust, etc. from entering the interior of the exterior case unit from between the first surrounding portion and the third surrounding portion, and it is possible to prevent water droplets, dust, etc. from entering the interior of the exterior case unit from between the second surrounding portion and the fourth surrounding portion.

[0012] The above-mentioned exterior case unit further includes a plurality of third exterior cases. The plurality of third exterior cases have a third exterior portion, a third surrounding portion that surrounds a third opening provided in the third exterior portion, and a fourth surrounding portion that surrounds a fourth opening provided in the third exterior portion. The opening surface of the third opening and the opening surface of the fourth opening face each other. The first surrounding portion and the third surrounding portion are capable of being fitted together, and the second surrounding portion and the fourth surrounding portion are capable of being fitted together. One of the third surrounding portions of two adjacent third exterior cases among the plurality of third exterior cases and the fourth surrounding portion of the other of the two adjacent third exterior cases are capable of being fitted together. When the number of electrical devices to be accommodated in the exterior case unit increases, by increasing the number of exterior cases in the exterior case unit, it is possible to flexibly respond to changes in the number of electrical devices.

[0013] The first exterior case or the second exterior case is provided with a window portion through which light passes. A user can visually recognize the inside of the exterior case unit through the window portion. The first exterior case or the second exterior case is provided with a vent valve. Since the first exterior case or the second exterior case is provided with the vent valve, it is not necessary to provide a vent valve for each electric device, and gas can be safely discharged from the first exterior case or the second exterior case.

[0014] The stacking directions of the first exterior case, the second exterior case, and the third exterior case are in the vertical direction. One of the plurality of electric devices is fixed to a structure having vibration resistance and shock resistance by the second exterior case at the lowermost part in the stacking direction. The second exterior case at the lowermost part in the stacking direction has a hole through which wiring for connecting to an external device is inserted. Thereby, since the position where the wiring is drawn out is fixed, even if the number of electric devices increases or decreases after construction, it is not necessary to change the position where the wiring is drawn out, and it does not affect the installation of the wiring. One of the plurality of electric devices is a control unit, or one of the plurality of electric devices has a control unit, or one of the plurality of electric devices has a control unit and a storage battery. The others of the plurality of electric devices are storage batteries, or the others of the plurality of electric devices have storage batteries. According to one aspect of the present invention, an electrical equipment including an exterior case unit and the plurality of electric devices is provided.

[0015] According to one aspect of the present invention, there is provided an exterior case including an exterior portion capable of accommodating one or more electric devices and a first surrounding portion surrounding a first opening provided in the exterior portion, and the first surrounding portion can be fitted into a second surrounding portion surrounding a second opening provided in a first exterior case capable of accommodating the one or more electric devices. When the number of electric devices accommodated in the exterior case unit including the exterior case is changed, it is possible to flexibly respond to the change in the number of electric devices by changing the number of exterior cases in the exterior case unit.

[0016] In the above-mentioned exterior case, a first sealing portion is provided in the first surrounding portion or the second surrounding portion. When the first surrounding portion and the second surrounding portion are in a fitted state, the first sealing portion is disposed between the first surrounding portion and the second surrounding portion. Thereby, it is possible to prevent water droplets, dust, etc. from entering the interior of the exterior case from between the first surrounding portion and the second surrounding portion.

[0017] The above-mentioned exterior case further includes a third surrounding portion that surrounds a third opening provided in the exterior portion. The opening surface of the first opening and the opening surface of the third opening face each other. The third surrounding portion can be fitted into a fourth surrounding portion that surrounds a fourth opening provided in a second exterior case capable of accommodating the one or more electrical devices. When the number of electrical devices to be accommodated in the exterior case unit increases, it is possible to flexibly respond to the change in the number of electrical devices by increasing the number of exterior cases in the exterior case unit. The above-mentioned exterior case includes a window portion that allows light to pass through. The user can visually recognize the interior of the exterior case through the window portion.

Advantages of the Invention

[0018] According to the present invention, it is possible to provide a technology that can flexibly respond to changes in the number of electrical devices.

Brief Description of the Drawings

[0019]

Figure 1

Figure 2

Figure 3

Figure 4

Figure 5

Figure 6

Figure 7

Figure 8

Figure 9

Figure 10

Figure 11

Figure 12

Figure 13

Figure 14

Figure 15

Figure 16

Figure 17

Figure 18

Figure 19

Figure 20

Figure 21

Figure 22

Figure 23

Figure 24

Figure 25

Figure 26

Figure 27

Figure 28

Figure 29

Figure 30

Figure 31

MODE FOR CARRYING OUT THE INVENTION

[0020] Hereinafter, application examples and embodiments will be described with reference to the drawings. The application examples and embodiments shown below are one aspect of the present application and do not limit the scope of rights of the present application.

[0021] <Application Example> An example of a scenario to which the present embodiment is applied will be described. FIG. 1 is a diagram showing the configuration of the exterior case unit 1. The exterior case unit 1 can accommodate a plurality of electrical devices. The exterior case unit 1 shown in FIG. 1 includes a plurality of additional exterior cases 2, one upper exterior case 3, and one lower exterior case 4. For example, the upper exterior case 3 may be used as the first exterior case, the lower exterior case 4 may be used as the second exterior case, and the additional exterior case 2 may be used as the third exterior case. The exterior case unit 1 shown in FIG. 1 includes additional exterior cases 2A and 2B, but the number of additional exterior cases 2 is not limited to two, and may be one or three or more. The exterior case unit 1 is an aggregate of exterior cases including one or more additional exterior cases 2, an upper exterior case 3, and a lower exterior case 4. The interiors of the additional exterior cases 2A, 2B and the upper exterior case 3 are each hollow, and the additional exterior cases 2A, 2B and the upper exterior case 3 can accommodate one or more electrical devices. By assembling the additional exterior cases 2A, 2B, the upper exterior case 3 and the lower exterior case 4, an electrical device unit including a plurality of electrical devices is accommodated in the additional exterior cases 2A, 2B and the upper exterior case 3. As shown in FIG. 1, when the exterior case unit 1 is assembled, the airtightness inside the exterior case unit 1 is maintained.

[0022] The lower exterior case 4 can accommodate a part of the wiring 5. The wiring 5 is an external wiring connected to an external device 6 such as a power conditioner. The lower exterior case 4 is also called a base unit. The wiring 5 is a wiring cable for transmitting and receiving power and signals between the electrical equipment unit housed in the exterior case unit 1 and the external device 6. One end of the wiring 5 is connected to the electrical equipment unit housed in the exterior case unit 1, and the other end of the wiring 5 is connected to the external device 6. The wiring 5 may be protected by, for example, a PF pipe. It is possible to place the additional exterior case 2B or the upper exterior case 3 on the additional exterior case 2A. It is possible to place the additional exterior case 2A or the upper exterior case 3 on the additional exterior case 2B. It is possible to place the additional exterior case 2A, 2B or the upper exterior case 3 on the lower exterior case 4. The stacking direction of the additional exterior cases 2A, 2B, the upper exterior case 3 and the lower exterior case 4 is the vertical direction (perpendicular direction). The upper exterior case 3 is arranged at the topmost part in the stacking direction of the exterior case unit 1, and the lower exterior case 4 is arranged at the lowermost part in the stacking direction of the exterior case unit 1.

[0023] Figure 2 is a diagram showing the configuration of the electrical equipment unit 7. The electrical equipment unit 7 includes a plurality of storage batteries 8 and a control unit (control device) 9. The control unit 9 is a controller that controls the charging and discharging of the plurality of storage batteries 8. The storage battery 8 and the control unit 9 are an example of electrical equipment. The storage battery 8 and the control unit 9 may be integrated. One of the plurality of electrical equipment may be the control unit 9, or one of the plurality of electrical equipment may have the control unit 9, or one of the plurality of electrical equipment may have the storage battery 8 and the control unit 9. The other of the plurality of electrical equipment may be the storage battery 8, or the other of the plurality of electrical equipment may have the storage battery 8. The electrical equipment unit 7 shown in Figure 2 includes storage batteries 8A to 8C, but the number of storage batteries 8 is not limited to three, and may be one or two, or four or more.

[0024] FIG. 3 is a diagram showing an example of assembling the additional exterior cases 2A and 2B, the upper exterior case 3, and the lower exterior case 4. In the example shown in FIG. 3, the control unit 9 and the storage battery 8A are housed in the upper exterior case 3, the storage battery 8B is housed in the additional exterior case 2A, and the storage battery 8C is housed in the additional exterior case 2B. An electrical device having the control unit 9 and the storage battery 8A may be housed in the upper exterior case 3, an electrical device having the storage battery 8B may be housed in the additional exterior case 2A, and an electrical device having the storage battery 8C may be housed in the additional exterior case 2B. By changing the heights of the additional exterior case 2A and the upper exterior case 3, only the control unit 9 or the electrical device having the control unit 9 may be housed in the upper exterior case 3, and the storage batteries 8A and 8B may be housed in the additional exterior case 2A. By changing the height of the additional exterior case 2A, an electrical device having the storage battery 8A and an electrical device having the storage battery 8B may be housed in the additional exterior case 2A. By changing the heights of the additional exterior case 2B and the upper exterior case 3, only the control unit 9 or the electrical device having the control unit 9 may be housed in the upper exterior case 3, and the storage batteries 8B and 8C may be housed in the additional exterior case 2B. By changing the height of the additional exterior case 2B, an electrical device having the storage battery 8B and an electrical device having the storage battery 8C may be housed in the additional exterior case 2B. A part of the storage battery 8C or a part of the electrical device having the storage battery 8C may be housed in the lower exterior case 4.

[0025] FIG. 4 is a perspective view showing the configuration of the additional exterior case 2A. FIG. 5 is a plan view of the additional exterior case 2A when viewed from the direction of arrow X1 in FIG. 4. The additional exterior case 2A is a hollow case having openings formed in the top surface portion and the bottom surface portion. The additional exterior case 2A includes an exterior portion (exterior cover) 11, a surrounding portion 13 surrounding the opening 12 provided in the exterior portion 11, and a surrounding portion 15 surrounding the opening 14 provided in the exterior portion 11. The opening surfaces of the opening 12 and the opening 14 of the exterior portion 11 face each other.

[0026] FIG. 6 is a perspective view showing the configuration of the additional exterior case 2B. FIG. 7 is a plan view of the additional exterior case 2B when viewed from the direction of arrow X2 in FIG. 6. The additional exterior case 2B is a hollow case having openings formed in the top surface portion and the bottom surface portion. The additional exterior case 2B includes an exterior portion (exterior cover) 21, a surrounding portion 23 that surrounds an opening 22 provided in the exterior portion 21, and a surrounding portion 25 that surrounds an opening 24 provided in the exterior portion 21. The opening 22 in the exterior portion 21 and the opening 24 in the exterior portion 21 face each other.

[0027] FIG. 8 is a perspective view showing the configuration of the upper exterior case 3. FIG. 9 is a plan view of the upper exterior case 3 when viewed from the direction of arrow X3 in FIG. 8. The upper exterior case 3 is a hollow case having a top surface portion and an opening formed in the bottom surface portion. The upper exterior case 3 includes an exterior portion (exterior cover) 31 and a surrounding portion 33 that surrounds an opening 32 provided in the exterior portion 31.

[0028] FIG. 10 is a perspective view showing the configuration of the lower exterior case 4. FIG. 11 is a plan view of the lower exterior case 4 when viewed from the direction of arrow X4 in FIG. 10. The lower exterior case 4 is a hollow case having a bottom surface portion and an opening formed in the top surface portion. The lower exterior case 4 includes an exterior portion (exterior cover) 41 and a surrounding portion 43 that surrounds an opening 42 provided in the exterior portion 41.

[0029] The surrounding portion 13 of the additional exterior case 2A and the surrounding portion 33 of the upper exterior case 3 are capable of being fitted together. FIGS. 12 and 13 are cross-sectional views of the surrounding portion 13 of the additional exterior case 2A and the surrounding portion 33 of the upper exterior case 3. FIG. 12 is a cross-sectional view of the surrounding portion 13 of the additional exterior case 2A and the surrounding portion 33 of the upper exterior case 3 at the location where the additional exterior case 2A and the upper exterior case 3 are fixed by bolts 51. FIG. 13 is a cross-sectional view of the surrounding portion 13 of the additional exterior case 2A and the surrounding portion 33 of the upper exterior case 3 at a location other than the location where the additional exterior case 2A and the upper exterior case 3 are fixed by bolts 51.

[0030] The surrounding portion 13 of the additional exterior case 2A has a convex portion, and the surrounding portion 33 of the upper exterior case 3 has a concave portion. By inserting the convex portion of the surrounding portion 13 of the additional exterior case 2A into the concave portion of the surrounding portion 33 of the upper exterior case 3, the surrounding portion 13 of the additional exterior case 2A and the surrounding portion 33 of the upper exterior case 3 are fitted together. By fitting the surrounding portion 13 of the additional exterior case 2A and the surrounding portion 33 of the upper exterior case 3 together, it is possible to place the upper exterior case 3 on the additional exterior case 2A in a stable state. By fixing the additional exterior case 2A and the upper exterior case 3 with bolts 51, the fitting between the surrounding portion 13 of the additional exterior case 2A and the surrounding portion 33 of the upper exterior case 3 is surely maintained.

[0031] A sealing portion 52 is provided on the surrounding portion 13 of the additional exterior case 2A or the surrounding portion 33 of the upper exterior case 3. The sealing portion 52 is, for example, a packing. The sealing portion 52 may be arranged at the tip of the convex portion of the surrounding portion 13 of the additional exterior case 2A, or the sealing portion 52 may be arranged in the concave portion of the surrounding portion 33 of the upper exterior case 3. When the surrounding portion 13 of the additional exterior case 2A and the surrounding portion 33 of the upper exterior case 3 are in a fitted state, the sealing portion 52 is arranged between the surrounding portion 13 of the additional exterior case 2A and the surrounding portion 33 of the upper exterior case 3. Thereby, it is suppressed that water droplets, dust, etc. enter the inside of the additional exterior case 2A and the inside of the upper exterior case 3 from between the surrounding portion 13 of the additional exterior case 2A and the surrounding portion 33 of the upper exterior case 3.

[0032] It is not limited to the configurations shown in FIGS. 12 and 13. Instead of the configurations shown in FIGS. 12 and 13, the surrounding portion 13 of the additional exterior case 2A may have a recess, and the surrounding portion 33 of the upper exterior case 3 may have a protrusion. By inserting the protrusion of the surrounding portion 33 of the upper exterior case 3 into the recess of the surrounding portion 13 of the additional exterior case 2A, the surrounding portion 13 of the additional exterior case 2A and the surrounding portion 33 of the upper exterior case 3 are fitted together. By fitting the surrounding portion 13 of the additional exterior case 2A and the surrounding portion 33 of the upper exterior case 3 together, it is possible to place the upper exterior case 3 on the additional exterior case 2A in a stable state. A sealing portion 52 may be disposed in the recess of the surrounding portion 13 of the additional exterior case 2A, or the sealing portion 52 may be disposed at the tip of the protrusion of the surrounding portion 33 of the upper exterior case 3.

[0033] The surrounding portion 15 of the additional exterior case 2A and the surrounding portion 23 of the additional exterior case 2B are capable of being fitted together. FIGS. 14 and 15 are cross-sectional views of the surrounding portion 15 of the additional exterior case 2A and the surrounding portion 23 of the additional exterior case 2B. FIG. 14 is a cross-sectional view of the surrounding portion 15 of the additional exterior case 2A and the surrounding portion 23 of the additional exterior case 2B at a location where the additional exterior case 2A and the additional exterior case 2B are fixed by bolts 51. FIG. 15 is a cross-sectional view of the surrounding portion 15 of the additional exterior case 2A and the surrounding portion 23 of the additional exterior case 2B at a location other than the location where the additional exterior case 2A and the additional exterior case 2B are fixed by bolts 51.

[0034] The surrounding portion 15 of the additional exterior case 2A has a recess, and the surrounding portion 23 of the additional exterior case 2B has a protrusion. By inserting the protrusion of the surrounding portion 23 of the additional exterior case 2B into the recess of the surrounding portion 15 of the additional exterior case 2A, the surrounding portion 15 of the additional exterior case 2A and the surrounding portion 23 of the additional exterior case 2B are fitted together. By fitting the surrounding portion 15 of the additional exterior case 2A and the surrounding portion 23 of the additional exterior case 2B together, it is possible to place the additional exterior case 2A on the additional exterior case 2B in a stable state. By fixing the additional exterior case 2A and the additional exterior case 2B with bolts 51, the fitting between the surrounding portion 15 of the additional exterior case 2A and the surrounding portion 23 of the additional exterior case 2B is surely maintained.

[0035] A sealing portion 52 is provided on the surrounding portion 15 of the additional exterior case 2A or the surrounding portion 23 of the additional exterior case 2B. The sealing portion 52 may be disposed in the recess of the surrounding portion 15 of the additional exterior case 2A, or the sealing portion 52 may be disposed at the tip of the protrusion of the surrounding portion 23 of the additional exterior case 2B. When the surrounding portion 15 of the additional exterior case 2A and the surrounding portion 23 of the additional exterior case 2B are in a fitted state, the sealing portion 52 is disposed between the surrounding portion 15 of the additional exterior case 2A and the surrounding portion 23 of the additional exterior case 2B. Thereby, it is possible to prevent water droplets, dust, etc. from entering the interior of the additional exterior case 2A and the interior of the additional exterior case 2B from between the surrounding portion 15 of the additional exterior case 2A and the surrounding portion 23 of the additional exterior case 2B.

[0036] It is not limited to the configurations shown in FIGS. 14 and 15. Instead of the configurations shown in FIGS. 14 and 15, the surrounding portion 15 of the additional exterior case 2A may have a convex portion, and the surrounding portion 23 of the additional exterior case 2B may have a concave portion. By inserting the convex portion of the surrounding portion 15 of the additional exterior case 2A into the concave portion of the surrounding portion 23 of the additional exterior case 2B, the surrounding portion 15 of the additional exterior case 2A and the surrounding portion 23 of the additional exterior case 2B are fitted together. By fitting the surrounding portion 15 of the additional exterior case 2A and the surrounding portion 23 of the additional exterior case 2B together, it is possible to place the additional exterior case 2A on the additional exterior case 2B in a stable state. A sealing portion 52 may be disposed at the tip of the convex portion of the surrounding portion 15 of the additional exterior case 2A, or the sealing portion 52 may be disposed in the concave portion of the surrounding portion 23 of the additional exterior case 2B.

[0037] The surrounding portion 25 of the additional exterior case 2B and the surrounding portion 43 of the lower exterior case 4 can be fitted together. The configuration of the surrounding portion 25 of the additional exterior case 2B is the same as the configuration of the surrounding portion 15 of the additional exterior case 2A. The configuration of the surrounding portion 43 of the lower exterior case 4 is the same as the configuration of the surrounding portion 13 of the additional exterior case 2A. Regarding the fitting of the surrounding portion 25 of the additional exterior case 2B and the surrounding portion 43 of the lower exterior case 4, it is the same as the fitting of the surrounding portion 13 of the additional exterior case 2A and the surrounding portion 33 of the upper exterior case 3. By fitting the surrounding portion 25 of the additional exterior case 2B and the surrounding portion 43 of the lower exterior case 4 together, it is possible to place the additional exterior case 2B on the lower exterior case 4 in a stable state.

[0038] The surrounding portion 23 of the additional exterior case 2B and the surrounding portion 33 of the upper exterior case 3 can be fitted together. Regarding the fitting of the surrounding portion 23 of the additional exterior case 2B and the surrounding portion 33 of the upper exterior case 3, it is the same as the fitting of the surrounding portion 13 of the additional exterior case 2A and the surrounding portion 33 of the upper exterior case 3. By fitting the surrounding portion 23 of the additional exterior case 2B and the surrounding portion 33 of the upper exterior case 3 together, it is possible to place the upper exterior case 3 on the additional exterior case 2B in a stable state.

[0039] The surrounding portion 15 of the additional exterior case 2A and the surrounding portion 43 of the lower exterior case 4 can be fitted together. The fitting between the surrounding portion 15 of the additional exterior case 2A and the surrounding portion 43 of the lower exterior case 4 is the same as the fitting between the surrounding portion 13 of the additional exterior case 2A and the surrounding portion 33 of the upper exterior case 3. The surrounding portion 15 of the additional exterior case 2A and the surrounding portion 43 of the lower exterior case 4 By fitting together, it is possible to place the additional exterior case 2A on the lower exterior case 4 in a stable state.

[0040] The surrounding portion 33 of the upper exterior case 3 and the surrounding portion 43 of the lower exterior case 4 can be fitted together. The configuration of the surrounding portion 43 of the lower exterior case 4 is the same as the configuration of the surrounding portion 13 of the additional exterior case 2A. The fitting between the surrounding portion 33 of the upper exterior case 3 and the surrounding portion 43 of the lower exterior case 4 is the same as the fitting between the surrounding portion 13 of the additional exterior case 2A and the surrounding portion 33 of the upper exterior case 3. By fitting together the surrounding portion 33 of the upper exterior case 3 and the surrounding portion 43 of the lower exterior case 4, it is possible to place the upper exterior case 3 on the lower exterior case 4 in a stable state.

[0041] For example, when separating the storage battery 8C from the electric device unit 7 to reduce the number of storage batteries 8 in the electric device unit 7, as shown in FIG. 16, separate the additional exterior case 2B from the exterior case unit 1, and assemble the additional exterior case 2A, the upper exterior case 3, and the lower exterior case 4. FIG. 16 is a diagram showing the configuration of the exterior case unit 1. As shown in FIG. 16, when the exterior case unit 1 is assembled, the airtightness inside the exterior case unit 1 is maintained. FIG. 17 is a diagram showing an example of the case of assembling the additional exterior case 2A, the upper exterior case 3, and the lower exterior case 4. In the example shown in FIG. 17, the control unit 9 and the storage battery 8A are accommodated in the upper exterior case 3, and the storage battery 8B is accommodated in the additional exterior case 2A. An electric device having the control unit 9 and the storage battery 8A may be accommodated in the upper exterior case 3, and an electric device having the storage battery 8B may be accommodated in the additional exterior case 2A. By changing the heights of the additional exterior case 2A and the upper exterior case 3, the control unit 9 or an electric device having the control unit 9 may be accommodated in the upper exterior case 3, and the storage batteries 8A and 8B may be accommodated in the additional exterior case 2A. By changing the height of the additional exterior case 2A, an electric device having the storage battery 8A and an electric device having the storage battery 8B may be accommodated in the additional exterior case 2A. A part of the storage battery 8B or a part of an electric device having the storage battery 8C may be accommodated in the lower exterior case 4.

[0042] For example, when separating the storage batteries 8B and 8C from the electrical equipment unit 7 to reduce the number of storage batteries 8 in the electrical equipment unit 7, as shown in FIG. 18, separate the additional exterior cases 2A and 2B from the exterior case unit 1, and assemble the upper exterior case 3 and the lower exterior case 4. FIG. 18 is a diagram showing the configuration of the exterior case unit 1. It is possible to place the upper exterior case 3 on the lower exterior case 4. As shown in FIG. 18, when the exterior case unit 1 is assembled, the airtightness inside the exterior case unit 1 is maintained. FIG. 19 is a diagram showing an example of the case of assembling the upper exterior case 3 and the lower exterior case 4. In the example shown in FIG. 19, the control unit 9 and the storage battery 8A are housed inside the upper exterior case 3. An electrical device having the control unit 9 and the storage battery 8A may be housed inside the upper exterior case 3. A part of the storage battery 8A or a part of the electrical device having the storage battery 8A may be housed inside the lower exterior case 4. The exterior case unit 1 is an aggregate of exterior cases including the upper exterior case 3 and the lower exterior case 4.

[0043] For example, when increasing the number of storage batteries 8 in the electrical equipment unit 7 to add storage batteries 8, as shown in FIG. 20, add the additional exterior case 2C to the exterior case unit 1, and assemble the additional exterior cases 2A, 2B, 2C, the upper exterior case 3, and the lower exterior case 4. FIG. 20 is a diagram showing the configuration of the exterior case unit 1. It is possible to place the additional exterior case 2B on the additional exterior case 2C. It is possible to place the additional exterior case 2C on the lower exterior case 4. As shown in FIG. 20, when the exterior case unit 1 is assembled, the airtightness inside the exterior case unit 1 is maintained. By making the electrical equipment unit 7 have a vertical stacking structure, even if the storage battery capacity is increased, the installation area does not change. Therefore, there is no need to secure a large installation space in anticipation of adding the storage battery 8. Also, there is no need to newly perform foundation work to add the storage battery 8.

[0044] When the number of the storage batteries 8 in the electric equipment unit 7 is changed, it is possible to flexibly cope with the change in the number of the storage batteries 8 by changing the number of the additional exterior cases 2 in the exterior case unit 1. For example, when the number of the storage batteries 8 in the electric equipment unit 7 decreases, it is possible to flexibly cope with the change in the number of the storage batteries 8 by reducing the number of the additional exterior cases 2 in the exterior case unit 1. For example, when the number of the storage batteries 8 in the electric equipment unit 7 increases, it is possible to flexibly cope with the change in the number of the storage batteries 8 by increasing the number of the additional exterior cases 2 in the exterior case unit 1. Even if the number of the storage batteries 8 is changed, it is possible to maintain the airtightness inside the exterior case unit 1. Since the airtightness inside the exterior case unit 1 is maintained, it is possible to use the non-airtight storage batteries 8 and the control unit 9. The lowermost lower exterior case 4 in the stacking direction of the exterior case unit 1 has wiring outlets 65 and 66, and the position of the drawing-out of the wiring 5 is fixed. Therefore, even if the number of the storage batteries 8 increases or decreases after the construction, it is not necessary to change the position of the drawing-out of the wiring 5, and it does not affect the installation of the wiring 5 and the PF pipe.

[0045] In order to accommodate the electric equipment unit 7 in the exterior case unit 1 with ensured airtightness, it is not necessary to ensure airtightness for each of the storage batteries 8 and the control unit 9. Thereby, it is not necessary to use a housing for ensuring airtightness for the storage batteries 8 and the control unit 9. Also, it is not necessary to perform the carrying-in work, the fixing work, the wiring connection work, etc. of the storage batteries 8 and the control unit 9 in a narrow space for ensuring airtightness. Therefore, the installation work of the storage batteries 8 and the control unit 9 is not affected by the housing size for ensuring airtightness, and the workability is improved. Since the housings of the storage batteries 8 and the control unit 9 can be made to have a minimum size and can be simplified, the cost of the product can be reduced. Since the exterior case unit 1 is not affected by the housing structures of the storage batteries 8 and the control unit 9, the designability can be improved.

[0046] Referring to FIGS. 21, 22, 23 and 24, an example of a method for accommodating the electric device unit 7 in the exterior case unit 1 and installing the exterior case unit 1 and the electric device unit 7 will be described. FIG. 21 is a flowchart for explaining the flow of the method for installing the exterior case unit 1 and the electric device unit 7. First, the lower exterior case 4 is fixed to the concrete base portion 62 using the bolts 61 (step S1). The concrete base portion 62 is a structure having vibration resistance and impact resistance. FIG. 22 is a perspective view showing the configuration of the lower exterior case 4. FIG. 23 is a plan view showing the configuration of the lower exterior case 4. FIG. 24 is a perspective view showing the configuration of the lower exterior case 4. FIG. 24 shows an enlarged part of the lower exterior case 4. Inside the lower exterior case 4, fixing plates 63 and 64 for fixing the storage battery 8 are arranged. The fixing plates 63 and 64 are provided on the bottom surface portion of the exterior portion 41. Inside the lower exterior case 4, the lower exterior case 4 is fixed to the concrete base portion 62 using the bolts 61, so the workability is good and the bolts 61 do not protrude from the lower exterior case 4. Therefore, the appearance of the exterior case unit 1 is good.

[0047] The lower exterior case 4 includes wiring outlets 65, 66 and a vent valve 67. The wiring outlet 65 is provided in the exterior portion 41 of the lower exterior case 4 on the first side surface side or the second side surface side. The wiring outlets 65 and 66 are holes through which the wiring 5 is inserted. The wiring outlets 66 and the vent valve 67 are provided in the exterior portion 41 of the lower exterior case 4 on the back side. By opening and closing the vent valve 67, the pressure inside the exterior case unit 1 is adjusted. By providing the vent valve 67 in the exterior portion 41 of the lower exterior case 4, it is not necessary to provide a vent valve 67 for each of the storage battery 8 and the control unit 9, and the gas can be safely discharged from the lower exterior case 4 arranged at the lower part (bottom surface portion) of the exterior case unit 1. The vent valve 67 can be provided at any position of the lower exterior case By providing the vent valve 67 at any position of the lower exterior case 4, gas can be discharged from the lower exterior case 4 in the intended direction without affecting the structures of the storage battery 8 and the control unit 9. Further, the vent valve 67 of the lower exterior case 4 may be eliminated, and one of the plurality of additional exterior cases 2 or the upper exterior case 3 may be provided with the vent valve 67.

[0048] The internal space of the lower exterior case 4 is partitioned by a partition plate 68. The partition plate 68 is provided with insertion holes 69 for inserting the wiring 5. When the wiring 5 is inserted through the insertion holes 69 of the partition plate 68, by providing a cable ground 70 between the wiring 5 and the insertion holes 69 of the partition plate 68, entry of water droplets, dust, etc. into the interior of the lower exterior case 4 from the insertion holes 69 of the partition plate 68 is suppressed. The cable ground 70 is, for example, a sealing portion such as packing.

[0049] When pulling out the wiring 5 from the lower exterior case 4 to the first side surface side, the wiring 5 is pulled out from the wiring outlet 65, and a connection connector 71 is arranged at the wiring outlet 65. When pulling out the wiring 5 from the lower exterior case 4 to the back side, the wiring 5 is pulled out from the wiring outlet 66, and a connection connector 71 is arranged at the wiring outlet 66.

[0050] The internal space of the lower exterior case 4 is partitioned by a partition plate 68 into a first internal space and a second internal space. Fixing plates 63 and 64 are arranged in the first internal space of the lower exterior case 4. Note that the fixing plate may be on the side of the storage battery 8. By arranging a lid portion 72 above the second internal space of the lower exterior case 4 and providing a cable ground 70 between the wiring 5 and the insertion holes 69 of the partition plate 68, the airtightness inside the lower exterior case 4 is maintained. The lid portion 72 is fixed to the exterior portion 41 by bolts 73.

[0051] Next, place the storage battery 8C on the lower exterior case 4 (step S2). Next, fix the lower exterior case 4 and the storage battery 8C to each other with sheet metal and screws from the side (step S3). The storage battery 8C is fixed to the concrete base portion 62 by the lower exterior case 4. After placing the storage battery 8B on the storage battery 8C, fix the storage battery 8B and the storage battery 8C to each other with sheet metal and screws from the side, and connect the wiring of the storage battery 8B and the wiring of the storage battery 8C (step S4). After placing the storage battery 8A on the storage battery 8B, fix the storage battery 8A and the storage battery 8B to each other with sheet metal and screws from the side, and connect the wiring of the storage battery 8A and the wiring of the storage battery 8B (step S5). When adding additional storage batteries 8, repeat the same process as in step S4 or step S5 according to the number of additional storage batteries 8.

[0052] Next, after placing the control unit 9 on the storage battery 8A, fix the storage battery 8A and the control unit 9 to each other with sheet metal and screws from the side, and connect the wiring of the storage battery 8A and the wiring of the control unit 9 (step S6). Next, connect the wiring 5 to the control unit 9 via the lower exterior case 4 (step S7). For example, the wiring 5 may be drawn into the lower exterior case 4 and passed through the inside of the storage batteries 8A to 8C to connect the wiring 5 to the control unit 9. Cover the electric equipment unit 7 with the additional exterior cases 2A, 2B and the upper exterior case 3, and after placing each exterior case, fix the exterior cases to each other (step S8).

[0053] With reference to FIG. 25, a method for aligning and fixing the storage batteries 8A to 8C and the control unit 9 will be described. FIG. 25 is a schematic diagram showing the configuration of the electric equipment unit 7. A protrusion 82 is provided on the upper surface of the housing 81 of the storage battery 8A, and a recess 83 is provided on the lower surface of the housing 81 of the storage battery 8A. A protrusion 85 is provided on the upper surface of the housing 84 of the storage battery 8B, and a recess 86 is provided on the lower surface of the housing 84 of the storage battery 8B. A protrusion 88 is provided on the upper surface of the housing 87 of the storage battery 8C. A recess 92 is provided on the lower surface of the housing 91 of the control unit 9.

[0054] Fitting the protrusion 88 of the housing 87 of the storage battery 8C into the recess 86 of the housing 84 of the storage battery 8B Thereby, the storage batteries 8B and 8C are aligned. A connection plate 93 is attached to the housing 84 of the storage battery 8B and the housing 87 of the storage battery 8C, and the four corners of the connection plate 93 are screwed. Thereby, the storage battery 8B and the storage battery 8C are fixed to each other. A harness 94 is attached to the housing 84 of the storage battery 8B and the housing 87 of the storage battery 8C, and the wiring of the storage battery 8B and the wiring of the storage battery 8C are connected via the harness 94. The harness 94 is a cable with a connector.

[0055] After fixing the storage battery 8B and the storage battery 8C to each other, it is possible to perform the connection work between the wiring of the storage battery 8B and the wiring of the storage battery 8C. Therefore, when connecting the wiring of the storage battery 8B and the wiring of the storage battery 8C, there is no risk of the housing 84 of the storage battery 8B falling, and the safety of the installation work can be improved. Also, it is possible to perform the connection work between the wiring of the storage battery 8B and the wiring of the storage battery 8C from the side surface side. It is not necessary to use a waterproof connector for connecting the wiring of the storage battery 8B and the wiring of the storage battery 8C, and the cost can be reduced. When attaching the harness 94, there is nothing that obstructs the view, and since the locked state of the connector of the harness 94 can be confirmed, it is possible to easily confirm whether the connector of the harness 94 is securely connected to the storage batteries 8B and 8C. As the connector of the harness 94, a general connector can be used, and the options for the harness 94 are expanded.

[0056] By fitting the protrusion 85 of the housing 84 of the storage battery 8B into the recess 83 of the housing 81 of the storage battery 8A, the storage batteries 8A and 8B are aligned. A connection plate 93 is attached to the housing 81 of the storage battery 8A and the housing 84 of the storage battery 8B, and the four corners of the connection plate 93 are screwed. Thereby, the storage battery 8A and the storage battery 8B are fixed to each other. A harness 94 is attached to the housing 81 of the storage battery 8A and the housing 84 of the storage battery 8B, and the wiring of the storage battery 8A and the wiring of the storage battery 8B are connected via the harness 94.

[0057] After fixing the storage battery 8A and the storage battery 8B to each other, it is possible to perform the connection work between the wiring of the storage battery 8A and the wiring of the storage battery 8B. Therefore, when performing the connection work between the wiring of the storage battery 8A and the wiring of the storage battery 8B, there is no risk of the housing 81 of the storage battery 8A falling, and the safety of the installation work can be improved. In addition, it is possible to perform the connection work between the wiring of the storage battery 8A and the wiring of the storage battery 8B from the side surface side. It is not necessary to use a waterproof connector for connecting the wiring of the storage battery 8A and the wiring of the storage battery 8B, and the cost can be reduced. When attaching the harness 94, there is nothing that obstructs the view, and since the locking state of the connector of the harness 94 can be confirmed, it is possible to easily confirm whether or not the connector of the harness 94 is securely connected to the storage batteries 8A and 8B.

[0058] By fitting the protrusion 82 of the housing 81 of the storage battery 8A into the recess 92 of the housing 91 of the control unit 9, the alignment of the storage battery 8A and the control unit 9 is performed. An attachment plate 93 is attached to the housing 81 of the storage battery 8A and the housing 91 of the control unit 9, and the four corners of the attachment plate 93 are screwed. Thereby, the storage battery 8A and the control unit 9 are fixed to each other. A harness 94 is attached to the housing 81 of the storage battery 8A and the housing 91 of the control unit 9, and the wiring of the storage battery 8A and the wiring of the control unit 9 are connected via the harness 94.

[0059] After fixing the storage battery 8A and the control unit 9 to each other, it is possible to perform the connection work between the wiring of the storage battery 8A and the wiring of the control unit 9. Therefore, when performing the connection work between the wiring of the storage battery 8A and the wiring of the control unit 9, there is no risk of the housing 91 of the control unit 9 falling, and the safety of the installation work can be improved. In addition, it is possible to perform the connection work between the wiring of the storage battery 8A and the wiring of the control unit 9 from the side surface side. It is not necessary to use a waterproof connector for connecting the wiring of the storage battery 8A and the wiring of the control unit 9, and the cost can be reduced. When attaching the harness 94, there is nothing that obstructs the view, and since the locking state of the connector of the harness 94 can be confirmed, it is possible to easily confirm whether or not the connector of the harness 94 is securely connected to the storage battery 8A and the control unit 9.

[0060] FIG. 26 is a cross-sectional view of the upper exterior case 3 and the control unit 9. FIG. 26 shows a part of the upper exterior case 3 and a part of the control unit 9. FIG. 27 is a plan view showing a part of the exterior portion 31 of the upper exterior case 3. The upper exterior case 3 includes a window portion 101 that allows light to pass through. The window portion 101 is a light guide plate (transparent resin portion) formed of a transparent resin. The window portion 101 is inserted into a hole provided in the exterior portion 31 of the upper exterior case 3, and a part of the window portion 101 protrudes inside the upper exterior case 3. A part of the window portion 101 protruding inside the upper exterior case 3 is inserted into a nut 102, and the window portion 101 is fixed to the exterior portion 31 of the upper exterior case 3 by the nut 102.

[0061] The control unit 9 includes an LED 110. The LED 110 is provided on the surface of the housing 91 of the control unit 9. By turning on, off, flashing, etc. of the LED 110, it may be possible to display ON or OFF of the power supply of the control unit 9 or to display an abnormality of the control unit 9. The light emitted from the LED 110 is emitted to the outside of the upper exterior case 3 through the window portion 101. The window portion 101 is arranged in the upper exterior case 3 such that the center line of the window portion 101 is located on the optical axis of the LED 110. The user can visually recognize the inside of the exterior case unit 1 through the window portion 101. The user can visually recognize the lighting, extinguishing, flashing, etc. of the LED 110 through the window portion 101 to confirm ON or OFF of the power supply of the control unit 9 or to grasp an abnormality of the control unit 9.

[0062] A sealing portion 103 is disposed between the exterior portion 31 of the upper exterior case 3 and the window portion 101. By disposing the sealing portion 103 between the exterior portion 31 of the upper exterior case 3 and the window portion 101, it is possible to prevent water droplets, dust, etc. from entering the interior of the upper exterior case 3 from between the exterior portion 31 of the upper exterior case 3 and the window portion 101. A diffusing portion 104 is formed on the surface of the window portion 101 on the outside of the upper exterior case 3. The surface of the window portion 101 may be processed into a ground glass shape to form the diffusing portion 104 on the surface of the window portion 101. Further, the surface of the window portion 101 may be processed into a minute uneven shape to form the diffusing portion 104 on the surface of the window portion 101. The light emitted from the LED 110 and passing through the window portion 101 is diffused by the diffusing portion 104 of the window portion 101. A masking portion 105 is formed on the surface of the window portion 101 on the outside of the upper exterior case 3. The masking portion 105 may be formed, for example, by masking printing. The masking portion 105 may be black or other colors. The masking portion 105 prevents the sealing portion 103 from being reflected in the window portion 101.

[0063] The above-described electric device unit 7 is configured to dispose the control unit 9 at the uppermost part, but is not limited thereto. The electric device unit 7 may be configured to dispose the control unit 9 at the lowermost part. In this case, the additional exterior case 2 may include the window portion 101. For example, in the case of the exterior case unit 1 shown in FIG. 1, the additional exterior case 2B may include the window portion 101. The user can visually recognize the inside of the exterior case unit 1 through the window portion 101. The user can visually recognize the lighting, extinguishing, blinking, etc. of the LED 110 through the window portion 101 to confirm the ON or OFF of the power supply of the control unit 9 or to grasp the abnormality of the control unit 9.

[0064] As shown in FIGS. 28 to 31, the configuration of the exterior case unit 1 may be changed. FIG. 28 is a diagram showing the configuration of the exterior case unit 1. The exterior case unit 1 shown in FIG. 28 includes an additional exterior case 2A, an upper exterior case 3, and a lower exterior case 4. FIG. 29 is a diagram showing an example of assembling the additional exterior case 2A, the upper exterior case 3, and the lower exterior case 4. The exterior case unit 1 shown in FIGS. 28 and 29 has a different height of the lower exterior case 4 compared to the exterior case unit 1 shown in FIGS. 16 and 17. In the example shown in FIG. 29, the control unit 9 and the storage battery 8A are accommodated in the upper exterior case 3, the storage battery 8B is accommodated in the additional exterior case 2A, and the storage battery 8C is accommodated in the lower exterior case 4. An electrical device having the control unit 9 and the storage battery 8A may be accommodated in the upper exterior case 3, an electrical device having the storage battery 8B may be accommodated in the additional exterior case 2A, and an electrical device having the storage battery 8C may be accommodated in the lower exterior case 4. By changing the heights of the additional exterior case 2A and the upper exterior case 3, only the control unit 9 or an electrical device having the control unit 9 may be accommodated in the upper exterior case 3, and the storage batteries 8A and 8B may be accommodated in the additional exterior case 2A. By changing the height of the additional exterior case 2A, an electrical device having the storage battery 8A and an electrical device having the storage battery 8B may be accommodated in the additional exterior case 2A. By changing the heights of the upper exterior case 3 and the lower exterior case 4, only the control unit 9 or an electrical device having the control unit 9 may be accommodated in the upper exterior case 3, the storage battery 8A may be accommodated in the additional exterior case 2A, and the storage batteries 8B and 8C may be accommodated in the lower exterior case 4. An electrical device having the storage battery 8A may be accommodated in the additional exterior case 2A. By changing the height of the lower exterior case 4, an electrical device having the storage battery 8B and an electrical device having the storage battery 8C may be accommodated in the lower exterior case 4.

[0065] Figure 30 is a diagram showing the configuration of the exterior case unit 1. The exterior case unit 1 shown in Figure 30 includes an upper exterior case 3 and a lower exterior case 4. Figure 31 is a diagram showing an example of assembling the upper exterior case 3 and the lower exterior case 4. The exterior case unit 1 shown in Figures 30 and 31 has a different height of the lower exterior case 4 compared to the exterior case unit 1 shown in Figures 18 and 19. In the example shown in Figure 31, the control unit 9 and the storage battery 8A are housed in the upper exterior case 3, and the storage battery 8B is housed in the lower exterior case 4. An electric device having the control unit 9 and the storage battery 8A may be housed in the upper exterior case 3, or an electric device having the storage battery 8B may be housed in the lower exterior case 4. By changing the height of the upper exterior case 3, only the control unit 9 or an electric device having the control unit 9 may be housed in the upper exterior case 3. By changing the height of the lower exterior case 4, the storage batteries 8A and 8B may be housed in the lower exterior case 4. By changing the height of the lower exterior case 4, an electric device having the storage battery 8A and an electric device having the storage battery 8B may be housed in the lower exterior case 4.

[0066] The present invention may be regarded as an electrical facility including the exterior case unit 1, one or more storage batteries 8, and the control unit 9. Thereby, an electrical facility including the exterior case unit 1, one or more storage batteries 8, and the control unit 9 is provided. The present invention may be regarded as an electrical facility including the exterior case unit 1 and the electric device unit 7. Thereby, an electrical facility including the exterior case unit 1 and the electric device unit 7 is provided. Further, each of the processes and means described above may be regarded as a method of installing the exterior case unit, a method of installing a plurality of exterior cases, and the like. Note that each of the above configurations, means, and processes can be combined with each other as much as possible to construct the present invention.

[0067] <Appendix 1> An exterior case unit (1) capable of housing a plurality of electric devices (8, 9), a first exterior case (3), a second exterior case (4), comprising The first exterior case (3) has a first exterior portion (31) and a first surrounding portion (33) surrounding a first opening (32) provided in the first exterior portion (31). The second exterior case (4) has a second exterior portion (41) and a second surrounding portion (43) surrounding a second opening (42) provided in the second exterior portion (41). The first surrounding portion (33) and the second surrounding portion (43) are capable of being fitted together. Exterior case unit (1). <Appendix 2> A first sealing portion (52) is provided in the first surrounding portion (33) or the second surrounding portion (43). When the first surrounding portion (33) and the second surrounding portion (43) are in a fitted state, the first sealing portion (52) is disposed between the first surrounding portion (33) and the second surrounding portion (43). The exterior case unit (1) according to Appendix 1. <Appendix 3> Further comprising a third exterior case (2A). The third exterior case (2A) has a third exterior portion (11), a third surrounding portion (13) surrounding a third opening (12) provided in the third exterior portion (11), and a fourth surrounding portion (15) surrounding a fourth opening (14) provided in the third exterior portion (11). The opening surface of the third opening (12) and the opening surface of the fourth opening (14) face each other. The first surrounding portion (33) and the third surrounding portion (13) are capable of being fitted together. The second surrounding portion (43) and the fourth surrounding portion (15) are capable of being fitted together. The exterior case unit (1) according to Appendix 1. <Appendix 4> A second sealing portion (52) is provided in the first surrounding portion (33) on the third surrounding portion (13). When the first surrounding portion (33) and the third surrounding portion (13) are in a fitted state, the second sealing portion (52) is disposed between the first surrounding portion (33) and the third surrounding portion (13). A third sealing portion (52) is provided in the second surrounding portion (43) or the fourth surrounding portion (15). When the second surrounding portion (43) and the fourth surrounding portion (15) are in a fitted state, the third sealing portion (52) is disposed between the second surrounding portion (43) and the fourth surrounding portion (15). The exterior case unit (1) according to Supplementary Note 3. <Supplementary Note 5> It further includes a plurality of third exterior cases (2A, 2B). The plurality of third exterior cases (2A, 2B) include a third exterior portion (11, 21), a third surrounding portion (13, 23) that surrounds a third opening (12, 22) provided in the third exterior portion (11, 21), and a fourth surrounding portion (15, 25) that surrounds a fourth opening (14, 24) provided in the third exterior portion (11, 21). The opening surface of the third opening (12, 22) and the opening surface of the fourth opening (14, 24) face each other. The first surrounding portion (13) and the third surrounding portion (13, 23) are capable of being fitted together. The second surrounding portion (43) and the fourth surrounding portion (15, 25) are capable of being fitted together. Of the plurality of third exterior cases (2A, 2B), the third surrounding portion (22) of one (2B) of two adjacent third exterior cases and the fourth surrounding portion (15) of the other (2A) of the two adjacent third exterior cases are capable of being fitted together. The exterior case unit according to claim 1. <Supplementary Note 6> The first exterior case (3) or the second exterior case (4) includes a window portion (101) that allows light to pass through. The exterior case unit (1) according to any one of Supplementary Notes 1 to 5. <Supplementary Note 7> The first exterior case (3) or the second exterior case (4) includes a vent valve (67). The exterior case unit (1) according to any one of Supplementary Notes 1 to 6. <Supplementary Note 8> The stacking direction of the first exterior case (3) and the second exterior case (4) is the vertical direction. The exterior case unit (1) described in any one of Appendices 1 to 7. <Appendix 9> One of the plurality of electrical devices (8, 9) is fixed to a structure having vibration resistance and impact resistance by the lowermost second exterior case (4) in the stacking direction. The exterior case unit (1) described in Appendix 8. <Appendix 10> The lowermost second exterior case (4) in the stacking direction has a hole (65) through which a wiring (5) for connecting to an external device (6) is inserted. The exterior case unit (1) described in Appendix 8. <Appendix 11> One of the plurality of electrical devices is a control unit (9), or one of the plurality of electrical devices has a control unit (9), or one of the plurality of electrical devices has a control unit (9) and a storage battery (8). The others of the plurality of electrical devices are storage batteries (8), or the others of the plurality of electrical devices have storage batteries (8). The exterior case unit (1) described in any one of Appendices 1 to 10. <Appendix 12> The exterior case unit (1) described in any one of Appendices 1 to 11, The plurality of electrical devices (8, 9), and an electrical facility comprising the same. <Appendix 13> An exterior part (11, 41) capable of accommodating one or more electrical devices (8, 9), A first surrounding part (13, 43) surrounding a first opening (12, 42) provided in the exterior part (11, 41), comprising The first surrounding part (13, 43) is capable of fitting into a second surrounding part (33) surrounding a second opening (32) provided in a first exterior case (3) capable of accommodating the one or more electrical devices (8, 9). Exterior cases (2, 4). <Appendix 14> A first sealing portion (52) is provided in the first surrounding portion (13, 43) or the second surrounding portion (33), and when the first surrounding portion (13, 43) and the second surrounding portion (33) are in a fitted state, the first sealing portion (52) is disposed between the first surrounding portion (13, 43) and the second surrounding portion (33). The exterior case (2, 4) according to appended note 13. <Appended note 15> The exterior case further includes a third surrounding portion (15) that surrounds a third opening (14) provided in the exterior portion (11). The opening surface of the first opening (12) faces the opening surface of the third opening (14). The third surrounding portion (15) is capable of being fitted into a fourth surrounding portion (43) that surrounds a fourth opening (42) provided in a second exterior case (4) capable of accommodating the one or more electrical devices (8, 9). The exterior case (2) according to appended note 13 or 14. <Appended note 16> The exterior case includes a window portion (101) that allows light to pass through. The exterior case (2) according to any one of appended notes 13 to 15.

Explanation of reference numerals

[0068] 1: Exterior case unit 2, 2A, 2B, 2C: Exterior case for addition 3: Upper exterior case 4: Lower exterior case 5: Wiring 6: External device 7: Electrical device unit 8, 8A, 8B, 8C: Storage battery 9: Control unit 11, 21, 31, 41: Exterior portion 12, 14, 22, 24, 32, 42: Opening 13, 15, 23, 25, 33, 43: Surrounding portion 52: Sealing portion 67: Vent valve 101: Window portion

Claims

1. An exterior case unit capable of accommodating a plurality of electrical devices, comprising: a first exterior case; a second exterior case; The first exterior case has a first exterior portion and a first surrounding portion surrounding a first opening provided in the first exterior portion. The second exterior case has a second exterior portion and a second surrounding portion surrounding a second opening provided in the second exterior portion. The first surrounding portion and the second surrounding portion are capable of being fitted together. Exterior case unit.

2. A first sealing portion is provided in the first surrounding portion or the second surrounding portion. When the first surrounding portion and the second surrounding portion are in a fitted state, the first sealing portion is disposed between the first surrounding portion and the second surrounding portion. The exterior case unit according to Claim 1.

3. Further comprising a third exterior case, The third exterior case has a third exterior portion, a third surrounding portion surrounding a third opening provided in the third exterior portion, and a fourth surrounding portion surrounding a fourth opening provided in the third exterior portion. The opening surface of the third opening and the opening surface of the fourth opening face each other. The first surrounding portion and the third surrounding portion are capable of being fitted together. The second surrounding portion and the fourth surrounding portion are capable of being fitted together. The exterior case unit according to Claim 1.

4. A second sealing portion is provided in the first surrounding portion or the third surrounding portion. When the first surrounding portion and the third surrounding portion are in a fitted state, the second sealing portion is disposed between the first surrounding portion and the third surrounding portion. A third sealing portion is provided in the second surrounding portion or the fourth surrounding portion. When the second surrounding portion and the fourth surrounding portion are in a fitted state, the third sealing portion is disposed between the second surrounding portion and the fourth surrounding portion. The exterior case unit according to Claim 3.

5. Further comprising a plurality of third exterior cases, Each of the plurality of third exterior cases has a third exterior portion, a third surrounding portion surrounding a third opening provided in the third exterior portion, and a fourth surrounding portion surrounding a fourth opening provided in the third exterior portion. The opening surface of the third opening and the opening surface of the fourth opening face each other. The first surrounding portion and the third surrounding portion are capable of being fitted together. The second surrounding portion and the fourth surrounding portion are capable of being fitted together. One of the third surrounding portions of two adjacent third exterior cases among the plurality of third exterior cases and the fourth surrounding portion of the other of the two adjacent third exterior cases are capable of being fitted together. The exterior case unit according to claim 1.

6. The first exterior case or the second exterior case includes a window portion that allows light to pass through. The exterior case unit according to claim 1.

7. The first exterior case or the second exterior case includes a vent valve. The exterior case unit according to claim 1.

8. The stacking direction of the first exterior case and the second exterior case is the vertical direction. The exterior case unit according to claim 1.

9. One of the plurality of electrical devices is fixed to a structure having vibration resistance and impact resistance by the lowermost second exterior case in the stacking direction. The exterior case unit according to claim 8.

10. The lowermost second exterior case in the stacking direction has a hole through which wiring for connecting to an external device is inserted. The exterior case unit according to claim 8.

11. One of the plurality of electrical devices is a control unit, or one of the plurality of electrical devices has a control unit, or one of the plurality of electrical devices has a control unit and a storage battery. The others of the plurality of electrical devices are storage batteries, or the others of the plurality of electrical devices have storage batteries. The exterior case unit according to any one of claims 1 to 10.

12. The exterior case unit according to claim 1, The plurality of electrical devices, An electrical facility comprising.

13. An exterior portion capable of accommodating one or more electrical devices, A first surrounding portion surrounding a first opening provided in the exterior portion, Comprising, The first surrounding portion can be fitted into a second surrounding portion surrounding a second opening provided in a first exterior case capable of accommodating the one or more electrical devices. Exterior case.

14. A first sealing portion is provided in the first surrounding portion or the second surrounding portion, and when the first surrounding portion and the second surrounding portion are in a fitted state, the first sealing portion is disposed between the first surrounding portion and the second surrounding portion. The exterior case according to claim 13.

15. Further comprising a third surrounding portion surrounding a third opening provided in the exterior portion, The opening surface of the first opening and the opening surface of the third opening face each other, The third surrounding portion can be fitted into a fourth surrounding portion surrounding a fourth opening provided in a second exterior case capable of accommodating the one or more electrical devices. The exterior case according to claim 13.

16. Comprising a window portion that allows light to pass through. The exterior case according to any one of claims 13 to 15.

Images