Power storage element unit assembly, method for installing power storage element unit assembly, building with power storage element unit assembly and method for manufacturing building with power storage element unit assembly

Abstract

To stably secure a plurality of power storage element units inside a building.SOLUTION: A building with a power storage element unit assembly includes a first power storage element unit and a second power storage element unit. The first power storage element unit is secured inside the building. The second power storage element unit is arranged inside the building. The second power storage element unit 20B is secured to the first power storage element unit either directly or via a spacer.SELECTED DRAWING: Figure 3

Description

[Technical Field]

[0001] The present invention relates to an energy storage element unit assembly, a method for installing an energy storage element unit assembly, a building with an energy storage element unit assembly, and a method for manufacturing a building with an energy storage element unit assembly. [Background technology]

[0002] As described in Patent Document 1, an energy storage element unit is known. The energy storage element unit includes an energy storage element module and a control module. The control module is electrically connected to the energy storage element module. The energy storage element module functions as a secondary battery. The control module controls the energy storage element module.

[0003] In recent years, installation of energy storage element units inside buildings has been considered. Furthermore, with the spread of electric vehicles and the like, there is a demand for energy storage element units with larger capacities. [Prior art documents] [Patent documents]

[0004] [Patent Document 1] Japanese Patent Application Laid-Open No. 2017-5027 Summary of the Invention [Problem to be solved by the invention]

[0005] However, a large-capacity energy storage element unit needs to be fixed to a building using a structure such as a pillar. Therefore, there is little freedom in selecting an installation location for the large-capacity energy storage element unit, and it is not easy to stably fix the large-capacity energy storage element unit inside a building. On the other hand, it is not realistic from the viewpoint of manufacturing costs to adjust the external shape and capacity of the energy storage element unit for each installation location in the building.

[0006] The present invention has been made in consideration of the above points, and has as its object to stably fix a plurality of energy storage element units inside a building. [Means for solving the problem]

[0007] An energy storage element unit assembly according to one embodiment of the present invention includes: a first energy storage element unit fixed to the interior of the building directly or via a spacer; and a second energy storage element unit that is arranged inside the building and fixed to the first energy storage element unit directly or via a spacer.

[0008] A building with an energy storage element unit assembly according to one embodiment of the present invention comprises: an energy storage element unit assembly according to one embodiment of the present invention; the building in which the energy storage element unit assembly is fixed.

[0009] A method for installing an energy storage element unit assembly according to one embodiment of the present invention includes the steps of: a first installation step of installing a first energy storage element unit; a second installation step of installing a second energy storage element unit, In the first installation step, the first energy storage element unit is fixed to a building directly or via a spacer inside the building; In the second installation step, the second energy storage element unit is fixed inside the building directly or via a spacer to the first energy storage element unit fixed to the building.

[0010] A method for manufacturing a building with an energy storage element unit assembly according to one embodiment of the present invention includes the steps of: A method for installing an energy storage element unit assembly according to one embodiment of the present invention includes the step of installing the energy storage element unit assembly in the building. [Effects of the Invention]

[0011] According to the present invention, a plurality of energy storage element units can be stably fixed inside a building. [Brief explanation of the drawings]

[0012] [Figure 1] FIG. 1 is a diagram for explaining one embodiment, and is a perspective view showing an example of a building equipped with an energy storage element unit assembly. [Figure 2] FIG. 2 is an exploded perspective view showing an example of an energy storage element unit included in the energy storage element unit assembly of the building with the energy storage element unit assembly shown in FIG. [Figure 3] FIG. 3 is a side view showing the building with the energy storage element unit assembly shown in FIG. [Figure 4] FIG. 4 is a view corresponding to FIG. 3 and is a side view showing a modified example of a building equipped with an energy storage element unit assembly. [Figure 5] FIG. 5 is a view corresponding to FIG. 3 and is a side view showing another modified example of a building equipped with an energy storage element unit assembly. [Figure 6] FIG. 6 is a view corresponding to FIG. 1 and is a perspective view showing yet another modified example of a building equipped with an energy storage element unit assembly. [Figure 7] FIG. 7 is a view corresponding to FIG. 1 and is a perspective view showing yet another modified example of a building equipped with an energy storage element unit assembly. [Figure 8] FIG. 8 is a view corresponding to FIG. 1 and is a perspective view showing yet another modified example of a building equipped with an energy storage element unit assembly. DETAILED DESCRIPTION OF THE INVENTION

[0013] One embodiment of the present invention is as follows. <1> ~ <14> Regarding.

[0014] <1> a first energy storage element unit fixed to the interior of the building directly or via a spacer; a second energy storage element unit that is placed inside the building and fixed to the first energy storage element unit directly or via a spacer;

[0015] <2> the first energy storage element unit includes a first housing fixed to the building, a first energy storage element module housed in the first housing, and a first control module housed in the first housing and electrically connected to the first energy storage element module; the second energy storage element unit includes a second housing fixed to the first energy storage element unit, a second energy storage element module housed in the second housing, and a second control module housed in the second housing and electrically connected to the second energy storage element module; <1> The energy storage element unit combination according to claim 1.

[0016] <3> the second energy storage element unit is located above the first energy storage element unit; <1> or <2> The energy storage element unit combination according to claim 1.

[0017] <4> the first energy storage element unit is disposed facing a wall of the building and is located between the wall and the second energy storage element unit; <1> or <2> The energy storage element unit according to claim 1.

[0018] <5> the first energy storage element unit is disposed facing a wall portion of the building, the second energy storage element unit is disposed along the wall portion to the side of the first energy storage element unit; <1> or <2> The energy storage element unit according to claim 1.

[0019] <6> a gap is provided between the first power storage element unit and the second power storage element unit; <1> ~ <5> The energy storage element unit combination according to any one of claims 1 to 4.

[0020] <7> a gap is provided between the first energy storage element unit and the building; <1> ~ <6> The energy storage element unit combination according to any one of claims 1 to 4.

[0021] <8> At least one of the first energy storage element unit and the second energy storage element unit includes a fan that blows air toward the gap. <6> or <7> The energy storage element unit combination according to claim 1.

[0022] <9> The capacity of the second power storage element unit is the same as the capacity of the first power storage element unit. <1> ~ <8> The energy storage element unit combination according to any one of claims 1 to 4.

[0023] <10> the second energy storage element unit has the same configuration as the first energy storage element unit; <1> ~ <9> The energy storage element unit combination according to any one of claims 1 to 4.

[0024] <11> a third energy storage element unit that is arranged inside the building and fixed to one or both of the first energy storage element unit and the second energy storage element unit directly or via a spacer; <1> ~ <10> The energy storage element unit combination according to any one of claims 1 to 4.

[0025] <12> <1> ~ <11> the energy storage element unit assembly according to any one of the preceding claims, a building with an energy storage element unit assembly, the building having the energy storage element unit assembly fixed therein;

[0026] <13> a first installation step of installing a first energy storage element unit; a second installation step of installing a second energy storage element unit, In the first installation step, the first energy storage element unit is fixed to a building directly or via a spacer inside the building; In the second installation step, the second storage element unit is fixed inside the building directly or via a spacer to the first storage element unit fixed to the building.

[0027] <14> <13> 1. A method for manufacturing a building with an energy storage element unit assembly, comprising the step of installing the energy storage element unit assembly in the building by the installation method described in 1.

[0028] An embodiment of the present disclosure will be described below with reference to the drawings. In the drawings accompanying this specification, the scale and aspect ratios have been appropriately changed and exaggerated from those of the actual objects for ease of understanding. Configurations shown in some drawings may be omitted in other drawings. The scale and aspect ratios may differ between the drawings.

[0029] In this specification, terms that specify shapes, geometric conditions, and their degrees, such as "parallel," "orthogonal," and "identical," as well as values ​​of lengths and angles, are not limited to their strict meanings, but are interpreted to include a range within which similar functions can be expected.

[0030] To clarify the relationship between directions between drawings, several drawings use arrows with the same symbols to indicate a common first direction D1, second direction D2, and third direction D3. The tip of the arrow indicates the first side of each direction. The side opposite the tip of the arrow pointing away from the paper surface along a direction perpendicular to the paper surface of the drawing is indicated by a symbol of a dot within a circle, as shown in FIG. 3, for example. In the illustrated example, the first direction D1, second direction D2, and third direction D3 are perpendicular to each other.

[0031] 1 to 8 are diagrams illustrating this embodiment. FIG. 1 is a perspective view showing a specific example of a building 5 with an energy storage element unit assembly in this embodiment. The building 5 with an energy storage element unit assembly includes a building 90 and an energy storage element unit assembly 10. The energy storage element unit assembly 10 is placed inside the building 90. The energy storage element unit assembly 10 is fixed to the building 90. The energy storage element unit assembly 10 includes a plurality of energy storage element units 20. This embodiment is devised to enable a plurality of energy storage element units to be stably fixed inside a building.

[0032] The energy storage element unit assembly 10 is placed inside a building 90. The building 90 in which the energy storage element unit assembly 10 is installed is not particularly limited. The building 90 in which the energy storage element unit assembly 10 is installed may be a residence or a public facility. The residence may be a detached house, a dwelling unit in an apartment building, or a shared area of ​​an apartment building. The public facility is not particularly limited, and may be an office building, a school, a gymnasium, etc.

[0033] The installation location of the energy storage element unit assembly 10 inside the building 90 is not particularly limited. Examples of installation locations for the energy storage element unit assembly 10 include a room, a hallway, a dirt floor, and a storage space. Examples of storage spaces include a closet, an underfloor storage space, a space under the stairs, and a storeroom. In the illustrated example, the energy storage element unit assembly 10 is installed in a location including a floor 92 and a wall 94, such as a hallway. In the illustrated example, the axial direction D1 and the second direction D2 are parallel to the floor 92. The radial direction D3 is perpendicular to the floor 92 and parallel to the wall 94.

[0034] 1, the energy storage element unit combination 10 may include two energy storage element units 20. The energy storage element unit combination 10 may include three or more energy storage element units 20. The energy storage element units 20 are secondary battery units capable of storing and discharging electricity.

[0035] 2 is an exploded perspective view showing an example of the energy storage element unit 20. The energy storage element unit 20 may include a housing 21, an energy storage element module 25, and a control module 26. The energy storage element unit 20 including the housing 21, the energy storage element module 25, and the control module 26 can function as a secondary battery unit together with other energy storage element units, or can function as a secondary battery unit independently of other energy storage element units.

[0036] As shown in FIG. 2, the housing 21 may include, for example, a housing main body 22 and a lid 23. The illustrated housing main body 22 includes a bottom wall and a side wall. The side wall is cylindrical. The bottom wall may be rectangular. The side wall may be square cylindrical. The housing main body 22 includes an opening 22x that opens upward. The lid 23 is detachable from the housing main body 22. When fixed to the housing main body 22, the lid 23 closes the opening 22x of the housing main body 22.

[0037] The energy storage element module 25 is a secondary battery capable of charging and discharging. The energy storage element module 25 includes an energy storage element. An energy storage element is a secondary battery also called a cell. An energy storage element may be the smallest unit of an element capable of storing electricity. The energy storage element module 25 may include multiple energy storage elements. The multiple energy storage elements may be electrically connected in series or in parallel. Various types of energy storage elements may be employed. The energy storage element may be, for example, a lithium ion secondary battery. The energy storage element module 25 includes a container that houses the energy storage element. The container may be a box-shaped container.

[0038] The control module 26 is electrically connected to the energy storage element module 25. The control module 26 may control the energy storage element module 25. The control module 26 may have one or more functions of controlling the storage and discharge of the energy storage element module 25, monitoring the energy storage state (e.g., the amount of stored energy) of the energy storage element module 25, and monitoring the presence or absence of an abnormality in the energy storage element module 25.

[0039] The illustrated energy storage element unit combination 10 includes a first energy storage element unit 20A and a second energy storage element unit 20B. 3, first energy storage element unit 20A includes first housing 21A, first energy storage element module 25A, and first control module 26A. Second energy storage element unit 20B includes second housing 21B, second energy storage element module 25B, and second control module 26B.

[0040] All descriptions of the energy storage element unit 20 in this specification apply to the first energy storage element unit 20A. All descriptions of the energy storage element unit 20 in this specification apply to the second energy storage element unit 20B. Similarly, all descriptions of the housing 21 in this specification apply to both the first housing 21A and the second housing 21B. All descriptions of the energy storage element module 25 in this specification apply to both the first energy storage element module 25A and the second energy storage element module 25B. All descriptions of the control module 26 in this specification apply to both the first control module 26A and the second control module 26B.

[0041] 1 and 3, the first energy storage element unit 20A and the second energy storage element unit 20B are arranged on a floor 92. The first energy storage element unit 20A is arranged facing a wall 94. The second energy storage element unit 20B is arranged facing the first energy storage element unit 20A. The second energy storage element unit 20B faces the first energy storage element unit 20A from a first side in the first direction D1. The second energy storage element unit 20B, the first energy storage element unit 20A, and the wall 94 are arranged in this order in the first direction D1. That is, the first energy storage element unit 20A is located between the second energy storage element unit 20B and the wall 94 in the first direction D1.

[0042] As shown in FIGS. 1 and 3, first energy storage element unit 20A is disposed inside building 90 and fixed to building 90. As shown in FIG. 3, first energy storage element unit 20A may be fixed to building 90 using a fastener 12. Fastener 12 may be a fastening member such as a bolt or a wood screw. Fastener 12 may also be a nail, an anchor, or a rivet. Fastener may be a metal rivet or a resin rivet.

[0043] First energy storage element unit 20A may be fixed to building 90 directly or via spacers 14. In the example shown in Fig. 3, first energy storage element unit 20A is fixed directly to floor 92 using fasteners 12. First energy storage element unit 20A is fixed to wall 94 using fasteners 12 via spacers 14. Spacers 14 are not particularly limited. Spacers 14 may be made of metal or resin.

[0044] By using spacer 14, gap 80 is formed between first energy storage element unit 20A and wall portion 94. Energy storage element module 25 generates heat due to repeated charging and discharging. If energy storage element module 25 becomes overheated, the function of energy storage element module 25 may deteriorate. By providing gap 80, a heat exhaust path is secured, and it is possible to prevent the inside of housing 21 from becoming too hot.

[0045] As shown in the figure, the housing 21 of the first energy storage element unit 20A may be fixed to the building 90 directly or via a spacer 14 by the fixing device 12. In the example shown in the figure, the housing main body 22 of the housing 21 of the first energy storage element unit 20A is fixed to the building 90 by the fixing device 12.

[0046] 1 and 3, second energy storage element unit 20B is disposed inside building 90 and fixed to first energy storage element unit 20A. As shown in FIG. 3, second energy storage element unit 20B may be fixed to first energy storage element unit 20A using fastener 12.

[0047] Second energy storage element unit 20B may be fixed to first energy storage element unit 20A directly or via spacer 14. In the example shown in Fig. 3, second energy storage element unit 20B is fixed to first energy storage element unit 20A via spacer 14 using fixture 12. By using spacer 14, a gap 80 is formed between first energy storage element unit 20A and second energy storage element unit 20B. By providing gap 80, a heat dissipation path is ensured, and it is possible to prevent the inside of first housing 21A and second housing 21B from becoming too hot.

[0048] As shown in the figure, the housing 21 of the second energy storage element unit 20B may be fixed to the housing 21 of the first energy storage element unit 20A directly or via a spacer 14 by a fixing device 12. In the example shown in the figure, the housing main body 22 of the housing 21 of the second energy storage element unit 20B is fixed to the housing main body 22 of the housing 21 of the first energy storage element unit 20A by a fixing device 12.

[0049] In the example shown in Fig. 3, the second energy storage element unit 20B is disposed inside the building 90 and is also fixed to the building 90. The second energy storage element unit 20B may be fixed to the building 90 using a fastener 12. The second energy storage element unit 20B may be fixed to the building 90 directly or via a spacer 14. In the example shown in Fig. 3, the second energy storage element unit 20B is fixed directly to a floor 92 using the fastener 12.

[0050] As shown in the figure, the housing 21 of the second energy storage element unit 20B may be fixed to the building 90 directly or via a spacer 14 by the fastener 12. In the example shown in the figure, the housing main body 22 of the housing 21 of the second energy storage element unit 20B is fixed to the floor 92 of the building 90 by the fastener 12.

[0051] Fixing device 12 used to fix second energy storage element unit 20B may be the same as fixing device 12 used to fix first energy storage element unit 20A. Spacer 14 used to fix second energy storage element unit 20B may be the same as spacer 14 used to fix first energy storage element unit 20A.

[0052] 3, the energy storage element unit 20 may include a fan 28. The fan 28 cools the energy storage element unit 20. The energy storage element module 25 generates heat inside the housing 21. The fan 28 may exhaust the heat from the housing 21.

[0053] In the illustrated example, first energy storage element unit 20A includes fan 28 in first housing 21A. Second energy storage element unit 20B includes fan 28 in second housing 21B. Housing 21 is formed with air outlet 21x. Air outlet 21x exhausts gas from the inside of housing 21 to the outside through air outlet 21x. In the illustrated example, air outlet 21x of first housing 21A opens toward gap 80 between first energy storage element unit 20A and second energy storage element unit 20B. Air outlet 21x of second housing 21B opens toward gap 80 between first energy storage element unit 20A and second energy storage element unit 20B.

[0054] Air outlet 21x of first housing 21A and air outlet 21x of second housing 21B are offset in third direction D3. The offset can suppress interference between the airflow from first housing 21A toward gap 80 and the airflow from second housing 21B toward gap 80. This can promote heat dissipation from first energy storage element unit 20A and second energy storage element unit 20B.

[0055] In the example shown in Fig. 3, first energy storage element unit 20A is fixed to wall portion 94 via spacer 14. However, the present embodiment is not limited to this example. As shown in Figs. 4 and 5, first energy storage element unit 20A may be fixed directly to wall portion 94 without using spacer 14. In other words, first energy storage element unit 20A may be fixed to wall portion 94 such that first energy storage element unit 20A comes into contact with wall portion 94.

[0056] In the example shown in Fig. 4, first housing 21A includes protrusion 21y protruding outward. First energy storage element unit 20A comes into contact with wall 94 at protrusion 21y, thereby forming gap 80 between first energy storage element unit 20A and floor 92. In the example shown in Fig. 4, fixture 12 fixes first energy storage element unit 20A to wall 94 at protrusion 21y. However, this is not limiting, and fixture 12 may fix first energy storage element unit 20A to wall 94 at a position other than protrusion 21y.

[0057] 5, first power storage element unit 20A is fixed directly to wall 94. In this example, first housing 21A of first power storage element unit 20A may be in direct contact with wall 94.

[0058] In the example shown in Fig. 3, second energy storage element unit 20B is fixed to first energy storage element unit 20A via spacer 14. However, the present embodiment is not limited to this example. As shown in Figs. 4 and 5, second energy storage element unit 20B may be fixed directly to first energy storage element unit 20A without using spacer 14. In other words, second energy storage element unit 20B may be fixed to first energy storage element unit 20A such that second energy storage element unit 20B comes into contact with first energy storage element unit 20A.

[0059] In the example shown in Fig. 4, second housing 21B includes convex portion 21y that protrudes outward. Second energy storage element unit 20B comes into contact with first energy storage element unit 20A at convex portion 21y, thereby forming gap 80 between second energy storage element unit 20B and first energy storage element unit 20A. In the example shown in Fig. 4, fixture 12 fixes second energy storage element unit 20B to first energy storage element unit 20A at convex portion 21y. However, this is not limiting, and fixture 12 may fix second energy storage element unit 20B to first energy storage element unit 20A at a position other than convex portion 21y.

[0060] 5, second energy storage element unit 20B is fixed directly to first energy storage element unit 20A. In this example, second housing 21B of second energy storage element unit 20B may be in direct contact with first housing 21A of first energy storage element unit 20A.

[0061] In the example shown in FIGS. 3 to 5, the energy storage element unit 20 is fixed directly to the floor 92 by the fixing device 12. No gap 80 is formed between the housing 21 and the floor 92. The present embodiment is not limited to this example. The gap 80 may be formed between the energy storage element unit 20 and the floor 92 by using a housing 21 that includes a protrusion 21y at a position facing the floor 92. The gap 80 may be formed between the energy storage element unit 20 and the floor 92 by using a spacer 14.

[0062] A method for manufacturing a building 5 with an energy storage element unit assembly having the above configuration will be described. The method for manufacturing a building 5 with an energy storage element unit assembly includes a step of installing the energy storage element unit assembly by an installation method for an energy storage element unit assembly. The installation method for an energy storage element unit assembly includes a first step of installing a first energy storage element unit 20A and a second step of installing a second energy storage element unit 20B. According to the method for manufacturing a building 5 with an energy storage element unit assembly and the installation method for an energy storage element unit assembly described below, a large-capacity energy storage element unit assembly 10 can be stably fixed inside the building 90. A stably installed energy storage element unit assembly 10 can function stably. The reliability of the energy storage element unit assembly 10 can be improved.

[0063] In a first installation step, first energy storage element unit 20A is fixed to building 90 directly or via a spacer inside building 90. As shown in FIGS. 3 to 5 , first housing 21A may be fixed to floor 92 and / or wall 94 using fixture 12.

[0064] In a first installation step of installing the first energy storage element unit 20A, the first energy storage element unit 20A including the energy storage element module 25 and the control module 26 may be fixed to the building 90. Alternatively, the housing body 22 of the first housing 21A may be fixed to the building 90, the energy storage element module 25 and the control module 26 may be housed in the housing body 22 of the first housing 21A fixed to the building 90, and then the lid 23 may be fixed to the housing body 22.

[0065] In a second installation step, second energy storage element unit 20B is fixed to first energy storage element unit 20A, which is fixed to building 90, inside building 90, either directly or via spacer 14. As shown in FIGS. 3 to 5, second housing 21B may be fixed to first housing 21A using fixture 12.

[0066] In a second installation step of installing second energy storage element unit 20B, second energy storage element unit 20B including energy storage element module 25 and control module 26 may be fixed to first energy storage element unit 20A. Alternatively, housing body 22 of second housing 21B may be fixed to housing body 22 of first housing 21A, and energy storage element module 25 and control module 26 may be housed in housing body 22 of second housing 21B fixed to building 90, and then lid 23 may be fixed to housing body 22.

[0067] In a second installation step of installing second energy storage element unit 20B, second energy storage element unit 20B may be fixed to building 90. As shown in FIGS. 3 to 5 , second housing 21B may be fixed to floor 92 and / or wall 94 using fixture 12.

[0068] In recent years, there has been a strong demand for energy storage element units to be installed inside buildings and to have larger capacities in response to the spread of electric vehicles and the like. However, large-capacity energy storage element units are heavy, and therefore need to be fixed to buildings using structures such as pillars. Therefore, there is little freedom in selecting an installation location for a large-capacity energy storage element unit, and it is not easy to stably fix a large-capacity energy storage element unit inside a building. On the other hand, from the perspective of manufacturing costs, it is not realistic to manufacture energy storage element units with an appropriate shape and capacity depending on the installation location of the building to be installed and the desired capacity.

[0069] According to the present embodiment, energy storage element unit combination 10 includes first energy storage element unit 20A and second energy storage element unit 20B. First energy storage element unit 20A is fixed inside building 90 directly or via spacer 14. Second energy storage element unit 20B is disposed inside building 90. Second energy storage element unit 20B is fixed to first energy storage element unit 20A directly or via spacer 14.

[0070] According to this embodiment, by combining the first energy storage element unit 20A and the second energy storage element unit 20B, the capacity of the energy storage element unit combination 10 can be increased. Meanwhile, because the desired capacity is achieved by combining the first energy storage element unit 20A and the second energy storage element unit 20B, the size of the first energy storage element unit 20A can be prevented from increasing, improving the handleability of the first energy storage element unit 20A. Therefore, there is a high degree of freedom in selecting the installation location of the first energy storage element unit 20A, and the energy storage element unit 20A can be stably installed by utilizing the structure of the building 90. The second energy storage element unit 20B is fixed to the stably installed first energy storage element unit 20A in this manner. Therefore, the stably installed first energy storage element unit 20A can also be stably installed by utilizing the stably installed first energy storage element unit 20A. As a result, according to this embodiment, a large-capacity energy storage element unit combination 10 can be stably fixed inside the building 90. A stably installed energy storage element unit combination 10 can function stably. This can improve the reliability of energy storage element unit assembly 10.

[0071] In one specific example of the present embodiment, first power storage element unit 20A may include first housing 21A fixed to building 90, first power storage element module 25A housed in first housing 21A, and second power storage element module 25B housed in first housing 21A and electrically connected to first power storage element module 25A. Second power storage element unit 20B may include second housing 21B fixed to first power storage element unit 20A, second power storage element module 25B housed in second housing 21B, and second control module 26B housed in second housing 21B and electrically connected to second power storage element module 25B. According to this specific example, first power storage element unit 20A and second power storage element unit 20B can each function as an independent secondary battery unit. That is, by combining energy storage element units that can function independently, in other words, by combining general-purpose energy storage element units that can function independently, it is possible to obtain a large-capacity energy storage element unit combination 10. Therefore, a large-capacity energy storage element unit combination 10 can be realized at low cost.

[0072] In one specific example of the present embodiment, first energy storage element unit 20A may be disposed facing wall 94 of building 90, and may be located between wall 94 and second energy storage element unit 20B. According to this specific example, multiple energy storage element units 20 can be stably installed in a space that is narrow in width or short in height. Installation space for large-capacity energy storage element unit combination 10 can be secured with a high degree of freedom inside building 90.

[0073] In one specific example of the present embodiment, a gap 80 may be provided between the first energy storage element unit 20A and the second energy storage element unit 20B. The energy storage element module 25 generates heat through repeated charging and discharging. If the energy storage element module 25 becomes overheated, the function of the energy storage element module 25 may deteriorate. By providing the gap 80, a heat exhaust path is secured, and it is possible to prevent the inside of the housing 21 from becoming too hot. This can improve the reliability of the energy storage element unit assembly 10.

[0074] In one specific example of the present embodiment, a gap 80 may be provided between first energy storage element unit 20A and building 90. Energy storage element module 25 generates heat through repeated charging and discharging. If energy storage element module 25 becomes overheated, the function of energy storage element module 25 may deteriorate. By providing gap 80, a heat exhaust path is secured, and it is possible to prevent the inside of housing 21 from becoming too hot. This can improve the reliability of energy storage element unit assembly 10.

[0075] In one specific example of the present embodiment, at least one of the first energy storage element unit 20A and the second energy storage element unit 20B may include a fan 28 that blows air toward the gap 80. According to this specific example, it is possible to forcibly exhaust heat from at least one of the first energy storage element unit 20A and the second energy storage element unit 20B to the gap 80. This makes it possible to effectively prevent the energy storage element units from overheating and causing a decrease in performance. This makes it possible to improve the reliability of the energy storage element unit assembly 10.

[0076] In one specific example of the present embodiment, the capacity of second energy storage element unit 20B may be the same as the capacity of first energy storage element unit 20A. Second housing 21B may have the same contour as first housing 21A. According to this specific example, a limited number of types of energy storage element units 20 and housings 21 are prepared, and the desired capacity can be imparted to energy storage element unit assembly 10 by adjusting the number of energy storage element units 20 included in energy storage element unit assembly 10. The manufacturing cost of energy storage element unit assembly 10 obtained in this manner can be reduced.

[0077] In one specific example of the present embodiment, second energy storage element unit 20B may have the same configuration as first energy storage element unit 20A. Energy storage element unit assembly 10 may include only one type of energy storage element unit. According to this specific example, a plurality of energy storage element units 20 of one type are prepared, and the desired capacity can be imparted to energy storage element unit assembly 10 by adjusting the number of energy storage element units 20 included in energy storage element unit assembly 10. The manufacturing cost of energy storage element unit assembly 10 obtained in this manner can be effectively reduced.

[0078] Although the present embodiment has been described with reference to specific examples, the above-described specific examples do not limit the present embodiment. The above-described embodiment can be implemented with various other specific examples, and various omissions, substitutions, changes, additions, etc. can be made without departing from the spirit of the present invention.

[0079] An example of the modification will be described below with reference to the drawings. In the following description and the drawings used in the following description, parts that can be configured similarly to the above-described specific example will be designated by the same reference numerals as those used for the corresponding parts in the above-described specific example, and duplicated descriptions will be omitted.

[0080] In the above-described specific example, first energy storage element unit 20A and second energy storage element unit 20B are arranged in first direction D1, but the present embodiment is not limited to this example.

[0081] As shown in FIG. 6 , the second energy storage element unit 20B may be located above the first energy storage element unit 20A. In the example shown in FIG. 6 , the first energy storage element unit 20A and the second energy storage element unit 20B are arranged in the third direction D3. The second energy storage element unit 20B faces the first energy storage element unit 20A from the first side in the third direction D3. In the example shown in FIG. 6 , the second energy storage element unit 20B is also arranged inside the building 90 and fixed to the first energy storage element unit 20A directly or via a spacer 14. This modification allows a plurality of energy storage element units 20 to be stably installed while reducing the footprint. This modification also allows a high degree of freedom in securing installation space for a large-capacity energy storage element unit combination 10 inside the building 90.

[0082] In the example shown in Fig. 6, the housing body 22 of the second housing 21B may be fixed to the lid 23 of the first housing 21A. In the example shown in Fig. 6, the housing body 22 of the second housing 21B may be fixed to the housing body 22 of the first housing 21A together with the lid 23 of the first housing 21A. In the example shown in Fig. 6, the bottom of the housing body 22 of the second housing 21B may also serve as the lid 23 of the first housing 21A and be fixed to the housing body 22 of the first housing 21A.

[0083] 6, second power storage element unit 20B may be fixed to wall 94. Housing main body 22 of second housing 21B may be fixed to wall 94.

[0084] As shown in FIG. 7 , the first energy storage element unit 20A may be disposed facing a wall 94 of a building 90, and the second energy storage element unit 20B may be disposed to the side of the first energy storage element unit 20A along the wall 94. In the example shown in FIG. 7 , the first energy storage element unit 20A and the second energy storage element unit 20B are disposed in the second direction D2. The second energy storage element unit 20B faces the first energy storage element unit 20A from the first side in the second direction D2. In the example shown in FIG. 7 , the second energy storage element unit 20B is also disposed inside the building 90 and fixed to the first energy storage element unit 20A directly or via a spacer 14. This modification also enables a plurality of energy storage element units 20 to be stably installed in a small space. The installation space for the large-capacity energy storage element unit combination 10 can be secured with a high degree of freedom inside the building 90.

[0085] 7, second power storage element unit 20B may be fixed to wall 94. Housing body 22 of second housing 21B may be fixed to wall 94. In the example shown in FIG. 7, second power storage element unit 20B may be fixed to floor 92. Housing body 22 of second housing 21B may be fixed to floor 92.

[0086] The energy storage element unit combination 10 shown in FIGS. 6 and 7 may have the same configuration as the energy storage element unit combination 10 described above, except for the relative positions of the first energy storage element unit 20A and the second energy storage element unit 20B. For example, a fastener 12 may be used to fasten the first energy storage element unit 20A and the second energy storage element unit 20B. A spacer 14 may be used to fasten the first energy storage element unit 20A and the second energy storage element unit 20B. A gap 80 may be formed between the first energy storage element unit 20A and the second energy storage element unit 20B. A fastener 12 may be used to fasten the energy storage element unit 20 and the building 90. A spacer 14 may be used to fasten the energy storage element unit 20 and the building 90. A gap 80 may be formed between the energy storage element unit 20 and the building 90. The first energy storage element unit 20A and the second energy storage element unit 20B may include a housing 21 having a protrusion 21y. The first energy storage element unit 20A and the second energy storage element unit 20B may include a fan 28. The first energy storage element unit 20A and the second energy storage element unit 20B may include a housing 21 that includes an air outlet 21x.

[0087] In the specific example described above, the energy storage element unit combination 10 includes two energy storage element units 20. However, the present embodiment is not limited to this example. As shown in FIG. 8 , the energy storage element unit combination 10 may include a first energy storage element unit 20A, a second energy storage element unit 20B, and a third energy storage element unit 20C. The third energy storage element unit 20C is disposed inside a building 90. The third energy storage element unit 20C is fixed to one or both of the first energy storage element unit 20A and the second energy storage element unit 20B directly or via a spacer. According to this modification, multiple energy storage element units 20 can be stably installed in a small space. The installation space for the large-capacity energy storage element unit combination 10 can be secured with a high degree of freedom inside the building 90.

[0088] In the example shown in Fig. 8, the third energy storage element unit 20C is fixed to the first energy storage element unit 20A of the energy storage element unit combination 10 shown in Fig. 1 from the first side in the third direction D3. The third energy storage element unit 20C may include a housing 21 fixed to the building 90, an energy storage element module 25 housed in the housing 21, and a control module 26 housed in the housing 21 and electrically connected to the energy storage element module 25.

[0089] The configuration of third power storage element unit 20C related to first power storage element unit 20A may be the same as the configuration of second power storage element unit 20B related to first power storage element unit 20A described above. Third power storage element unit 20C may be fixed to building 90. The configuration of third power storage element unit 20C related to building 90 may be the same as the configuration of first power storage element unit 20A related to building 90 described above.

[0090] For example, a fastener 12 may be used to fasten the first energy storage element unit 20A and the third energy storage element unit 20C. A spacer 14 may be used to fasten the first energy storage element unit 20A and the third energy storage element unit 20C. A gap 80 may be formed between the first energy storage element unit 20A and the third energy storage element unit 20C. A fastener 12 may be used to fasten the third energy storage element unit 20C and the building 90. A spacer 14 may be used to fasten the third energy storage element unit 20C and the building 90. A gap 80 may be formed between the third energy storage element unit 20C and the building 90. The third energy storage element unit 20C may include a housing 21 having a protrusion 21y. The third energy storage element unit 20C may include a blower 28. The third energy storage element unit 20C may include a housing 21 including an air outlet 21x.

[0091] Third energy storage element unit 20C may be fixed to second energy storage element unit 20B in addition to or instead of first energy storage element unit 20A. The configuration of third energy storage element unit 20C related to second energy storage element unit 20B may be the same as the configuration of second energy storage element unit 20B related to first energy storage element unit 20A described above.

[0092] For example, fastener 12 may be used to fasten second energy storage element unit 20B and third energy storage element unit 20C. Spacer 14 may be used to fasten second energy storage element unit 20B and third energy storage element unit 20C. A gap 80 may be formed between second energy storage element unit 20B and third energy storage element unit 20C. Third energy storage element unit 20C may include housing 21 having protrusion 21y. Third energy storage element unit 20C may include air blower 28. Third energy storage element unit 20C may include housing 21 including air outlet 21x.

[0093] Furthermore, energy storage element unit combination 10 may include a fourth energy storage element unit. The fourth energy storage element unit may be placed inside building 90 and fixed to one or more of first to third energy storage element units 20A to 20C.

[0094] Although several modifications to the above-described embodiment have been described above, it is also possible to apply a plurality of modifications in combination as appropriate. [Explanation of symbols]

[0095] 5: building with energy storage element unit assembly, 10: energy storage element unit assembly, 12: fixture, 14: spacer, 20: energy storage element unit, 21: housing, 21x: air outlet, 21y: protrusion, 22: housing body, 22x: opening, 23: lid, 25: energy storage element module, 26: control module, 28: blower, 20A: first energy storage element unit, 21A: first housing, 25A: first energy storage element module, 26A: first control module, 20B: second energy storage element unit, 25B: second energy storage element module, 26B: second control module, 20C: third energy storage element unit, 80: gap, 90: building, 92: floor, 94: wall, D1: first direction D1, D2: second direction D2, D3: third direction D3

Claims

1. a first energy storage element unit fixed to the interior of the building directly or via a spacer; a second energy storage element unit that is placed inside the building and fixed to the first energy storage element unit directly or via a spacer;

2. the first energy storage element unit includes a first housing fixed to the building, a first energy storage element module housed in the first housing, and a first control module housed in the first housing and electrically connected to the first energy storage element module; 2. The energy storage element unit assembly of claim 1, wherein the second energy storage element unit includes a second housing fixed to the first energy storage element unit, a second energy storage element module housed in the second housing, and a second control module housed in the second housing and electrically connected to the second energy storage element module.

3. The energy storage element unit combination according to claim 1 , wherein the second energy storage element unit is located above the first energy storage element unit.

4. The energy storage element unit combination according to claim 1 , wherein the first energy storage element unit is disposed facing a wall of the building and is located between the wall and the second energy storage element unit.

5. the first energy storage element unit is disposed facing a wall portion of the building, The energy storage element unit combination according to claim 1 , wherein the second energy storage element unit is arranged to the side of the first energy storage element unit along the wall portion.

6. 6. The energy storage element unit combination according to claim 1, wherein a gap is provided between the first energy storage element unit and the second energy storage element unit.

7. The energy storage element unit combination according to any one of claims 1 to 5, wherein a gap is provided between the first energy storage element unit and the building.

8. The energy storage element unit combination according to claim 6 , wherein at least one of the first energy storage element unit and the second energy storage element unit includes a blower that blows air toward the gap.

9. 6. The energy storage element unit combination according to claim 1, wherein the second energy storage element unit has the same capacity as the first energy storage element unit.

10. 6. The energy storage element unit combination according to claim 1, wherein the second energy storage element unit has the same configuration as the first energy storage element unit.

11. The energy storage element unit combination according to any one of claims 1 to 5, further comprising: a third energy storage element unit that is arranged inside the building and fixed to one or both of the first energy storage element unit and the second energy storage element unit directly or via a spacer.

12. The energy storage element unit assembly according to any one of claims 1 to 5, a building with an energy storage element unit assembly, the building having the energy storage element unit assembly fixed therein;

13. a first installation step of installing a first energy storage element unit; a second installation step of installing a second energy storage element unit, In the first installation step, the first energy storage element unit is fixed to a building directly or via a spacer inside the building; In the second installation step, the second storage element unit is fixed to the first storage element unit fixed to the building inside the building, either directly or via a spacer.

14. A method for manufacturing a building with an energy storage element unit assembly, comprising the step of installing the energy storage element unit assembly in the building by the installation method according to claim 13.

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