Storage battery system fixing tool and storage battery system fixing tool set

Abstract

To provide a fixing tool, a fixing tool set, and a method for removing a metal plate adhered to the floor surface without damaging a wall surface or a floor surface and easily installing a small-sized electricity storage system.SOLUTION: An electric storage system fixing tool includes a metal plate having a top surface and a bottom surface, an adhesive gel attached to the bottom surface of the metal plate, and a fixing portion that detachably fixes a power storage system for grid connection to the top surface of the metal plate.SELECTED DRAWING: Figure 1

Description

[Technical Field]

[0001] This disclosure relates to a fixture for a power storage system, a fixture set for a power storage system, and a method for removing a metal plate adhered to a floor surface. [Background technology]

[0002] Grid-connected energy storage systems are becoming more common. Traditionally, these energy storage systems are heavy because they contain large-capacity storage batteries. These energy storage systems are often installed outdoors. When installing an energy storage system, it is necessary to prevent it from tipping over. For this reason, methods are used in which the energy storage system is fixed to the wall using fixing devices, or a heavy block is placed on the floor and the energy storage system is fixed on top of that.

[0003] On the other hand, recently, small and lightweight energy storage systems have been developed despite their large capacity. Small energy storage systems have the advantage that they can be installed in environments where energy storage systems could not be installed in the past (such as narrow spaces). To take advantage of this feature, it would be desirable to be able to install energy storage systems on, for example, the balconies of apartment buildings. If energy storage systems could be installed on balconies on middle and upper floors, energy storage systems would become more widespread and electricity would be used more effectively.

[0004] However, the balconies and exterior walls of apartment buildings are common areas, making it difficult to secure the energy storage system to the wall with metal fittings or drive anchors into the balcony floor. Energy storage system buyers likely would not want such an installation method. Furthermore, apartment buildings and other buildings are subject to earthquake resistance standards, and energy storage systems must be installed to meet these standards to prevent them from tipping over or sliding sideways during an earthquake. [Prior art documents] [Patent documents]

[0005] [Patent Document 1] Japanese Patent Application Publication No. 2019-168087 Summary of the Invention [Problem to be solved by the invention]

[0006] The above-mentioned Patent Document 1 discloses a laminate for fixing heavy objects, such as ATMs (Automatic Teller Machines), to floors such as concrete. This laminate is made by laminating a metal plate and an adhesive sheet made of an adhesive gel material, and has a plurality of through-holes that penetrate both. A female screw is formed inside each through-hole, and a male screw is inserted in advance with its tip protruding from the bottom.

[0007] When placing a heavy object on the floor, the laminate is placed on the floor with the tip of the male screw protruding from the bottom and moved appropriately to position it. Because the tip of the male screw protrudes from the bottom, the adhesive sheet does not adhere to the floor. Once positioned correctly, the male screw is temporarily removed and the adhesive sheet on the laminate is adhered to the floor. Then, a heavy object such as an ATM is placed on the laminate, and the heavy object is secured to the laminate by screwing the male screw into the female thread of the laminate through the opening formed in the bottom plate of the heavy object.

[0008] This laminated board is said to enable accurate positioning when placing heavy objects such as ATMs on the floor, making it easier to install heavy objects.

[0009] However, the laminated plate disclosed in Patent Document 1 is intended for precise installation of very heavy objects, such as ATMs. Such devices are not intended for installation on apartment balconies or similar spaces. Therefore, it is difficult to use it to install small energy storage systems on apartment balconies or similar spaces while meeting earthquake resistance standards. Furthermore, the laminated plate disclosed in Patent Document 1 is intended for fastening heavy objects, such as ATMs, and has a large surface area. Therefore, there is a problem in that moving the laminated plate on the floor for positioning purposes places a burden on the worker. Furthermore, once the laminated plate touches the floor, it becomes fixed in place. As a result, it is necessary to provide at least three male screws so that the laminated plate can be kept a certain distance from the floor using these male screws. This is because if there are only two or fewer male screws, the laminated plate becomes unstable and may partially adhere to the floor.

[0010] Therefore, an object of this disclosure is to provide a fixing device, a fixing device set, and a method for removing a metal plate adhered to a floor surface, which allows for easy installation of an electricity storage system without damaging a wall surface or a floor surface. [Means for solving the problem]

[0011] A storage system fixing device according to a first aspect of this disclosure includes a metal plate having a top surface and a bottom surface, an adhesive gel attached to the bottom surface of the metal plate, and a fixing portion for fixing the grid-connected storage system to the top surface of the metal plate.

[0012] A power storage system fixing tool set according to a second aspect of the present disclosure includes a pair of the above-described power storage system fixing tools, and fixes the power storage system to a predetermined surface using the pair of power storage system fixing tools.

[0013] A method according to a third aspect of this disclosure is a method for removing a metal plate adhered to a floor surface, the metal plate having a bottom surface adhered to the floor surface by an adhesive gel sheet, the metal plate having a female thread portion formed in advance and penetrating from the top surface to the bottom surface, the method including the steps of engaging a male screw with the female thread portion and screwing it to a first position where the tip of the male screw protrudes from the bottom surface, and further screwing the male screw to a second position where the bottom surface of the metal plate peels away from the floor surface near the female thread portion to a predetermined distance. [Effects of the Invention]

[0014] As described above, this disclosure provides a fixing tool that allows for easy installation of an electricity storage system without damaging a wall or floor surface, a fixing tool set for an electricity storage system, and a method for removing a metal plate adhered to a floor surface. [Brief explanation of the drawings]

[0015] [Figure 1] FIG. 1 is a diagram of an electricity storage system equipped with a fixing device according to a first embodiment of this disclosure, viewed obliquely from below. [Figure 2] FIG. 2 is a diagram of the electricity storage system equipped with the fixing device according to the first embodiment of this disclosure, viewed obliquely from above. [Figure 3] FIG. 3 is a perspective view showing the legs and fixing devices of the electricity storage system. [Figure 4] FIG. 4 is a perspective view of the fastener. [Figure 5] FIG. 5 is an exploded perspective view of the fastener. [Figure 6] FIG. 6 is an exploded perspective view showing how the electricity storage system is attached to the fixture. [Figure 7] 7 is a cross-sectional view of the fixture and the leg of the electricity storage system shown in FIG. 3 taken along the arrows 7-7. [Figure 8] FIG. 8 is a perspective view of a fastener according to a second embodiment of the present disclosure. [Figure 9] FIG. 9 is a perspective view of a fastener according to a third embodiment of the present disclosure. [Figure 10]FIG. 10 is a perspective view of a fastener according to a fourth embodiment of the present disclosure. [Figure 11] FIG. 11 is a perspective view of the fixture shown in FIG. 4 as viewed from the bottom side. [Figure 12] FIG. 12 is a perspective view of an electricity storage system including a fixing device according to the fourth embodiment. [Figure 13] FIG. 13 is a diagram showing the sizes of the fasteners shown in FIGS. [Figure 14] FIG. 14 is a perspective view of a fixation device according to a fifth embodiment of the present disclosure. [Figure 15] FIG. 15 is a perspective view of the fixture shown in FIG. 14 as viewed from the bottom side. [Figure 16] FIG. 16 is a diagram showing an example of the size of the fixing device shown in FIGS. [Figure 17] FIG. 17 is a perspective view of an electricity storage system including the fixture shown in FIGS. [Figure 18] FIG. 18 is an enlarged perspective view of a part of FIG. [Figure 19] FIG. 19 is a perspective view showing a method for peeling the fastener shown in FIGS. 14 and 15 from the floor surface. [Figure 20] FIG. 20 is a diagram showing a specific procedure for peeling the fixing device from the floor surface in the fifth embodiment. [Figure 21] FIG. 21 is a diagram showing a specific procedure for peeling the fixing device from the floor surface in the fifth embodiment. [Figure 22] FIG. 22 is a diagram showing a specific procedure for peeling the fixing device from the floor surface in the fifth embodiment. DETAILED DESCRIPTION OF THE INVENTION

[0016] In the following description and drawings, the same parts are designated by the same reference numerals, and therefore detailed description thereof will not be repeated.

[0017] First, various features of the disclosed embodiment The following describes the features of the embodiments of this disclosure. Note that any one or more of the following features may be combined.

[0018] (1) A first aspect of this disclosure provides a storage system fixing device that includes a metal plate having a top surface and a bottom surface, an adhesive gel attached to the bottom surface of the metal plate, and a fixing portion for removably fixing the storage system to the top surface of the metal plate.

[0019] The metal plate is fixed to a floor surface or the like by an adhesive gel attached to the bottom surface of the metal plate. The energy storage system is fixed to the fixing portion of the metal plate. This allows the energy storage system to be fixed in the correct position without damaging the floor surface or the like. Furthermore, by removably fixing the energy storage system to the fixing portion of the metal plate, the energy storage system can be easily removed from the energy storage system fixing device when sending the energy storage system back for maintenance, repair, or the like.

[0020] (2) The adhesive gel may include a first adhesive gel sheet and a second adhesive gel sheet, and the first adhesive gel sheet and the second adhesive gel sheet may be attached to the bottom surface so as not to overlap each other.

[0021] The adhesive gel is separated into a first adhesive gel sheet and a second adhesive gel sheet, which are attached to the bottom surface without overlapping, ensuring earthquake resistance while saving adhesive gel.

[0022] (3) The first adhesive gel sheet and the second adhesive gel sheet may have the same planar shape.

[0023] The first adhesive gel sheet and the second adhesive gel sheet are substantially the same, which simplifies manufacturing and reduces costs.

[0024] (4) The bottom surface may be rectangular, the first adhesive gel sheet may be attached near a first short side of the rectangle, and the second adhesive gel sheet may be attached near a second short side of the rectangle.

[0025] The first and second adhesive gel sheets are attached to the bottom of the metal plate at positions opposite each other near the short sides of the rectangle. The two adhesive gel sheets arranged in this way can stably hold the energy storage system even if a lateral force is applied to the center of gravity of the energy storage system.

[0026] (5) The top and bottom surfaces are parallel, and the metal plate has a first female thread portion formed from the top surface toward the bottom surface toward a first adhesive gel sheet affixed to the bottom surface, and a second female thread portion formed from the top surface toward the bottom surface toward a second adhesive gel sheet affixed to the bottom surface, and the fixing portion may include a first male screw and a second male screw that are combined with the first female thread portion and the second female thread portion, respectively, and fix the legs of the energy storage system to the top surface of the metal plate.

[0027] The legs of the electricity storage system can be stably fixed to the upper surface of the metal plate by a combination of the first male screw, the second male screw, and the first female screw portion and the second female screw portion.

[0028] (6) At least one of the first female thread portion and the second female thread portion may penetrate from the top surface to the bottom surface.

[0029] The process of passing the first or second female threaded portion from the top surface to the bottom surface of the metal plate is easier and faster than stopping the process midway, which simplifies the manufacturing process of the fastener, reduces costs, and shortens the manufacturing time.

[0030] (7) The first adhesive gel sheet and the second adhesive gel sheet may be attached to the bottom surface so as to cover the openings in the bottom surfaces of the first female threaded portion and the second female threaded portion, respectively.

[0031] Since the first adhesive gel sheet and the second adhesive gel sheet do not have any openings, the adhesive strength can be fully utilized to stably fix the electricity storage system to the floor surface or the like.

[0032] (8) The length of each of the first male screw and the second male screw may be selected so that when fixed to the first female thread portion and the second female thread portion of the metal plate, respectively, the tip of the male screw does not protrude from the bottom surface.

[0033] The lengths of the first and second male screws are selected so that the tips of the male screws do not protrude from the bottom surface, eliminating the risk of unnecessary openings being formed in the first and second adhesive gel sheets attached to the bottom surface or damaging the floor surface. As a result, the adhesive strength of the first and second adhesive gel sheets can be fully utilized to stably secure the energy storage system without damaging the floor surface or the like.

[0034] (9) The first adhesive gel sheet and the second adhesive gel sheet may have planar shapes of equal squares, and the length of one side of the square may be substantially equal to the length of the short side of the bottom surface of the metal plate.

[0035] Because the first and second adhesive gel sheets are both square, they are easy to manufacture and there is no need to consider the orientation when attaching them to the bottom surface of the metal plate. Furthermore, because the length of one side of the square is substantially equal to the length of the short side of the bottom surface of the metal plate, the entire width of the metal plate in the short side direction can be effectively utilized to secure the metal plate to the floor using the first and second adhesive gel sheets. As a result, the manufacturing process is easy and the energy storage system can be stably secured to the floor or other surface.

[0036] (10) The metal plate has a first female thread portion formed from the top surface to the bottom surface toward a first region of the bottom surface where an adhesive gel is attached, and a second female thread portion formed from the top surface to the bottom surface toward a second region of the bottom surface different from the first region, and the fixing portion may include a first male screw and a second male screw that are combined with the first female thread portion and the second female thread portion, respectively, and fix the legs of the energy storage system to the top surface of the metal plate.

[0037] The legs of the energy storage system are placed on the first female threaded portion and the second female threaded portion of the metal plate. If the legs of the energy storage system have an appropriate shape, the legs of the energy storage system can be firmly fixed to the metal plate by screwing the first male screw and the second male screw into the first female threaded portion and the second female threaded portion, respectively.

[0038] (11) The top surface and the bottom surface may both be rectangular having a first short side and a second short side, and a first long side and a second long side, and the first female thread portion and the second female thread portion may both be formed at the same distance from the first long side.

[0039] When the legs of the energy storage system are fixed to the metal plate, the sides of the legs are parallel to the sides of the metal plate, which results in a neat appearance when the energy storage system is fixed to the metal plate.

[0040] (12) The distance between the first female thread portion and the first short side may be equal to the distance between the second female thread portion and the second short side.

[0041] The first female thread portion and the second female thread portion are positioned symmetrically with respect to a central axis parallel to the short side of the metal plate. By fixing the legs of the energy storage system between the first female thread portion and the second female thread portion, the legs of the energy storage system are positioned in the center of the metal plate. As a result, the energy storage system is stably held on the metal plate.

[0042] (13) The metal plate may further have a third female thread portion formed from the top surface toward the bottom surface toward a third region of the bottom surface that is different from both the first region and the second region, and a fourth female thread portion formed from the top surface toward the bottom surface toward a region of the bottom surface that is different from either the first region, the second region, or the third region.

[0043] A pair of female threads different from the first female thread and the second female thread are additionally formed on the metal plate, and as a result, depending on which pair of female threads is used, it is possible to fix multiple types of power storage systems to the metal plate or to fix the same power storage system to the metal plate in different orientations.

[0044] (14) The first female threaded portion may extend from the top surface to the bottom surface.

[0045] A male screw can be screwed into the first female threaded portion so that its tip protrudes below the bottom surface of the metal plate. By screwing the male screw further in, the adhesive force of the adhesive gel can be overcome, allowing the metal plate to be easily peeled off from the floor.

[0046] (15) The fixing portion may include a first stud and a second stud fixed to the upper surface with a space therebetween.

[0047] By forming the bottom surfaces of the legs of the energy storage system so that they have notches or through-holes at the positions of the first and second studs, the energy storage system can be reliably placed at the positions of the first and second studs, allowing the energy storage system to be placed stably on the metal plate.

[0048] (16) In the energy storage system fixing device, a screw thread may be formed on at least a portion of the circumferential surface of the first stud, and the fixing portion may further include a first nut that engages with the screw thread.

[0049] The energy storage system is placed on the metal plate so that the first studs pass through the notches or through-holes in the legs of the energy storage system. Then, the first nuts are engaged with the tips of the first studs. By tightening the first nuts, the legs of the energy storage system can be firmly fixed to the metal plate.

[0050] (17) In the energy storage system fixing device, a screw thread may be formed on at least a portion of a side surface of the second stud, and the fixing portion may further include a second nut that engages with the screw thread.

[0051] The second studs are also secured to the metal plate by engaging and tightening the second nuts in the same way as the first studs. The energy storage system can be secured to the metal plate not only by the first studs but also by the second studs. As a result, the energy storage system can be stably and firmly secured to the metal plate.

[0052] (18) The upper surface of the metal plate may be rectangular having a first short side, a second short side, a first long side, and a second long side, and the first stud and the second stud may be formed at a position the same distance from the first long side.

[0053] When the energy storage system is fixed to the metal plate, the side surfaces of the legs of the energy storage system are parallel to the side surfaces of the metal plate, which results in a neat appearance when the energy storage system is fixed to the metal plate.

[0054] (19) The distance between the first stud and the first short side and the distance between the second stud and the second short side may be equal to each other.

[0055] The first stud and the second stud are arranged at positions symmetrical with respect to a central axis parallel to the first and second short sides of the metal plate. By fixing the legs of the energy storage system between the first and second studs, the legs of the energy storage system are positioned at the center of the metal plate. As a result, the energy storage system is stably held on the metal plate.

[0056] (20) The distance between the first stud and the first long side may be shorter than the distance between the first stud and the second long side.

[0057] The first stud is offset from the central axis parallel to the first long side and the second long side of the metal plate. When fixing the energy storage system to the metal plate, the position of the metal plate relative to the energy storage system can be changed by changing the direction of the metal plate. As a result, by changing the direction of the metal plate, the energy storage system can be installed in an appropriate position depending on the conditions of the installation location.

[0058] (21) The metal plate may further have a through hole extending from the top surface to the bottom surface at a position different from either the position where the first stud is provided or the position where the second stud is provided, and having a thread formed on the inner peripheral surface.

[0059] A male screw can be screwed into the through hole so that its tip protrudes below the bottom surface of the metal plate. By screwing the male screw in further and lengthening the part that protrudes from the metal plate, the adhesive force of the sticky gel can be overcome using the principle of a jack, and the metal plate can be easily peeled off from the floor.

[0060] (22) The through-hole may be formed at a position where the opening on the bottom side of the through-hole is the area where the adhesive gel is applied.

[0061] When a male screw is screwed into the through hole so that its tip protrudes from the bottom surface of the metal plate, the adhesive gel present below the opening of the through hole on the bottom surface of the metal plate adheres to the tip of the male screw. This reduces the risk of the tip of the male screw coming into direct contact with the floor surface. As a result, there is an effect of reducing the risk of damaging the floor surface when removing the metal plate from the floor.

[0062] (23) The through hole may be formed at a position where an opening on the upper surface side of the through hole is covered by a part of the power storage system fixed to the power storage system fixing fixture.

[0063] If dirt gets into the through-hole, it may cause problems when screwing the male screw into the through-hole to remove the fixing device from the floor surface. By covering the opening on the upper surface of the through-hole with the legs of the energy storage system, the risk of dirt getting into the through-hole is reduced. As a result, the fixing device can be easily removed from the floor surface.

[0064] (24) An adhesive gel may be attached to the entire bottom surface.

[0065] By applying adhesive gel to the entire bottom surface, the adhesive strength of the adhesive gel can be maximized to secure the metal plate to the floor, allowing the energy storage system to be stably fixed to the floor.

[0066] (25) The metal plate may be aluminum (hereinafter referred to as "aluminum"), an aluminum alloy, or an iron alloy.

[0067] Aluminum and aluminum alloys are resistant to rust, are unlikely to change appearance significantly over time, and are easy to process. Their moderate specific gravity and strength also make them easy to transport and install, and they can stably support the energy storage system. Iron alloys are easy to obtain and process, have sufficient strength, and can prevent rust with surface treatment.

[0068] (26) A power storage system fixing tool set according to a second aspect of this disclosure includes a pair of the above-described power storage system fixing tools, and fixes the power storage system to a predetermined surface using the pair of power storage system fixing tools.

[0069] By using a pair of fixing devices to fix the energy storage system to the floor, the posture of the energy storage system can be stabilized. The adhesive gel area used is also increased, allowing the energy storage system to be fixed stably and firmly to the floor.

[0070] (27) A method according to a third aspect of this disclosure is a method for removing a metal plate adhered to a floor surface. The metal plate has a bottom surface adhered to the floor surface with an adhesive gel. The metal plate has a female thread portion formed in advance, penetrating from the top surface to the bottom surface. This method includes the steps of engaging a male screw with the female thread portion and screwing the male screw to a first position where the tip of the male screw protrudes from the bottom surface, and further screwing the male screw to a second position where at least a portion of the bottom surface of the metal plate peels away from the floor surface by a predetermined distance near the female thread portion.

[0071] If a metal plate is fixed to the floor with a highly adhesive gel, a large amount of force is required to remove the metal plate. However, by screwing in the male thread of the female threaded part and protruding the tip from the bottom, the metal plate can be easily peeled off from the floor.

[0072] (28) This method may further include the step of removing the entire metal plate together with the adhesive gel from the floor surface by lifting up the floating end of the metal plate after screwing the male screw to the second position.

[0073] When the metal plate is peeled off from the floor surface by the male screw, the end of the metal plate near the through hole lifts off the floor surface. By pulling up this end by hand or with some kind of tool, the entire metal plate can be easily removed from the floor surface in just a short time.

[0074] [Details of the embodiments of the present disclosure] Specific examples of fixing devices for a power storage system according to embodiments of the present disclosure will be described below with reference to the drawings. Note that the disclosure is not limited to these examples, but is defined by the claims, and is intended to include all modifications within the meaning and scope equivalent to the claims. The above and other objects, features, aspects, and advantages of the present disclosure will become apparent from the following detailed description of the present disclosure taken in conjunction with the accompanying drawings.

[0075] 2. First embodiment 1 Configuration A. Overview 1 and 2, a grid-connected energy storage system 50 includes a rectangular parallelepiped housing 60 that houses a storage battery and a control circuit related to charging and discharging the storage battery, a pair of legs 62 and 64 attached to the housing 60 along the two short sides of the rectangular bottom surface of the housing 60 in the front-to-rear direction of the housing 60, and fastening devices 66 and 68 to which the legs 62 and 64 are respectively fixed. FIGS. 1 and 2 show the energy storage system 50 already fixed to the floor. The fastening devices 66 and 68 are fastening devices according to this disclosure.

[0076] B. Shape The fixing devices 66 and 68 have the same shape. Therefore, the shape and configuration of the fixing device 66 will be described below. Fig. 3 shows the state in which the leg 62 is fixed to the fixing device 66. Referring to Fig. 3, the fixing device 66 includes an aluminum plate 80 made of a metal that is substantially rectangular and has a uniform thickness, a pair of adhesive gel sheets 82 and 84 separately attached to the bottom surface of the aluminum plate 80, and, although not shown, a protective sheet attached to the surface of each of the adhesive gel sheets 82 and 84 opposite the aluminum plate 80 side.

[0077] B1. Leg 62 The legs 62 of the electricity storage system 50 include a bottom plate 86 that is placed on the top surface of the aluminum plate 80 and has approximately the same size as the top surface of the aluminum plate 80; two side plates 92 and 94 that extend perpendicular to the bottom plate 86 from two sides of the bottom plate 86 that are parallel to the two long sides of the aluminum plate 80; and a pair of mounting plates 96 and 98 that are provided on the upper ends of the two side plates 92 and 94 and that protrude in a direction parallel to the bottom plate 86, to which the housing 60 is fixed. As shown in FIG. 3 , a recess (notch) that extends inward is formed on a short side of the bottom plate 86. A similar recess is also formed on the other short side of the bottom plate 86. The legs 62 are fixed to the fixing fixture 66 at these two recesses with the hexagon bolt 88 and another hexagon bolt (not shown).

[0078] B2. Aluminum plate 80 In this embodiment, the aluminum plate 80 is a rectangular parallelepiped with long sides of 285 mm, short sides of 100 mm, and a thickness of 25 mm. Because the aluminum plate 80 is solid, it weighs approximately 2 kg in this example. With this weight, it is easy to transport. When installing it on a balcony or the like, it can be easily placed in the correct installation position by hand.

[0079] 4, a pair of female threads 150 and 152 for fixing the hexagonal bolt 88 shown in FIG. 3 to the aluminum plate 80 is formed on the upper surface of the aluminum plate 80. In this example, the female threads 150 and 152 are both formed near the short sides of the aluminum plate 80 and penetrate all the way to the bottom surface of the aluminum plate 80 toward the adhesive gel sheets 82 and 84. However, no openings are formed in the adhesive gel sheets 82 and 84.

[0080] B3. Adhesive gel sheet Referring to Figures 3 and 4, adhesive gel sheets 82 and 84 have strong adhesive properties and are also used as earthquake-resistant sheets for securing furniture and other items to the floor. When attached to a floor, adhesive gel sheets 82 and 84 can secure aluminum plate 80 to the floor with sufficient strength to withstand forces perpendicular to the floor and forces parallel to the floor. However, these adhesive gel sheets 82 and 84 can be relatively easily removed from the floor using a specific method. The material of adhesive gel sheets 82 and 84 itself is adhesive. Therefore, there is no need to worry about adhesive residue remaining on the floor when they are removed from the floor. Furthermore, adhesive gel sheets 82 and 84 can be reused as adhesive gel sheets after being washed thoroughly after use.

[0081] In this example, both adhesive gel sheets 82 and 84 are squares with sides of approximately 100 mm. Using sheets of the same shape eliminates the need to distinguish between adhesive gel sheets 82 and 84, facilitating manufacturing and reducing costs. The adhesive gel sheet 82 is attached to the first lower edge of the underside of the aluminum plate 80, with its first edge aligned with the short side of the underside of the aluminum plate 80 and its second and third edges, which sandwich the first edge, aligned with the two long sides of the underside of the aluminum plate 80. The adhesive gel sheet 84 is attached to the second lower edge of the underside of the aluminum plate 80, opposite the first lower edge, with its first edge aligned with the short side of the underside of the aluminum plate 80 and its second and third edges, which sandwich the first edge, aligned with the two long sides of the underside of the aluminum plate 80. Therefore, the adhesive gel sheets 82 and 84 do not overlap each other. Furthermore, the width of the aluminum plate 80 and the width of the adhesive gel sheets 82 and 84 are substantially the same. This saves the area of ​​the adhesive gel sheets 82 and 84, reducing costs, while maximizing the adhesive strength of the sheets to stably secure the power storage system 50 to the floor surface, etc. In particular, because the adhesive gel sheets 82 and 84 are attached near the short sides of the bottom surface of the aluminum plate 80, the power storage system 50 can be held stably even if a horizontal force is applied to the power storage system 50.

[0082] In this embodiment, the adhesive gel sheets 82 and 84 are attached to the bottom surface of the aluminum plate 80 so as to cover the openings on the bottom side of the female threaded portions 150 and 152. However, these are attached to the bottom surface of the aluminum plate 80 after the female threaded portions 150 and 152 are formed in the aluminum plate 80. Therefore, no through holes are formed in the adhesive gel sheets 82 and 84. This allows the area of ​​the adhesive gel sheets 82 and 84 to be used without waste, and maximizes the adhesive force. Furthermore, even if the tip of a hexagonal bolt 88 or the like were to protrude from the opening of the female threaded portions 150 and 152, there is no risk of damaging the floor surface due to the presence of the adhesive gel sheets 82 and 84.

[0083] Referring to FIG. 5, the adhesive gel sheet 82 includes an adhesive layer 100 attached to the bottom surface of the aluminum plate 80 and a protective sheet 102 attached to the adhesive layer 100 so as to cover the exposed portion of the adhesive layer 100. Similar to the adhesive gel sheet 82, the adhesive gel sheet 84 includes an adhesive layer 104 and a protective sheet 106. The surfaces of the protective sheets 102 and 106 facing the adhesive layers 100 and 104 are processed so that they can be easily peeled off from the adhesive layers 100 and 104. The back surfaces of the protective sheets 102 and 106 are similarly non-adhesive. Therefore, the adhesive gel sheet 82 will not adhere to unintended locations, such as floors or walls, until the protective sheets 102 and 106 are peeled off from the adhesive layers 100 and 104. After the fixing device 66 is positioned, the protective sheets 102 and 106 can be peeled off from the adhesive layers 100 and 104.

[0084] 2 Installation method A. Installation procedure overview The installation of the power storage system is generally performed according to the following procedure. First, the installer determines the location on the floor where the power storage system 50 will be installed. As a result, the approximate locations of the legs 62 and 64 on the floor are determined. The installer then uses a template prepared in advance to determine the exact locations of the fixing fixtures 66 and 68 on the floor. The installer removes the protective sheets from the adhesive gel sheets attached to the fixing fixtures 66 and 68 and places the fixing fixtures 66 and 68 in the locations determined by the template on the floor. As a result, the fixing fixtures 66 and 68 are fixed to the floor by the adhesive gel sheets. The installer then places the housing 60 on the fixing fixtures 66 and 68 so that the legs 62 of the housing 60 are positioned on the top surface of the fixing fixture 66 and the legs 64 are positioned on the top surface of the fixing fixture 68. Finally, the installer adjusts the orientation of the housing 60 and secures the legs 62 and 64 to the fixing fixtures 66 and 68 with hex bolts. This procedure will be described in more detail below.

[0085] B. Positioning Once the general location where the power storage system 50 will be installed has been determined, the worker lays a prepared template on the floor and determines the exact positions of the fixing devices 66 and 68. This template is cut out in two rectangular locations according to the specifications of the power storage system 50 so that the exact positions of the fixing devices 66 and 68 can be determined. This template is prepared by the manufacturer or seller of the power storage system 50. The worker fixes the fixing devices 66 and 68 to these two locations and then installs the power storage system 50 on top of it. As a result, the position of the power storage system 50 will not shift relative to the fixing devices 66 and 68, and the power storage system 50 can be installed correctly in the correct location.

[0086] C. Bonding of Fixtures Although the procedure for only the fixing tool 66 will be described below, the same process as that for the fixing tool 66 is carried out in parallel with the fixing tool 66 for the fixing tool 68 as well.

[0087] Referring to FIG. 6 , once the position where the fixing device 66 should be fixed has been determined, the worker peels off the protective sheet from the adhesive gel sheets 82 and 84 on the bottom of the fixing device 66 and places the fixing device 66 in the determined position. As a result, the fixing device 66 is firmly fixed in the correct position on the floor surface by the adhesive gel sheets 82 and 84. The protective sheet is attached to the adhesive gel sheets 82 and 84 during positioning. After positioning, the worker peels off the protective sheets 102 and 106 from the adhesive layers 100 and 104 of the adhesive gel sheets 82 and 84. This prevents the adhesive gel sheets 82 and 84 from being fixed in the wrong position on the floor or other surface before the correct positioning is determined. The process of fixing the energy storage system is simplified and can be completed in a short time. Because the adhesive gel sheets 82 and 84 are attached to the bottom surface of the aluminum plate 80, there is little risk of the aluminum plate 80 coming into direct contact with the floor or other surface, thereby reducing the possibility of damaging the floor or other surface.

[0088] D. Fixing the Energy Storage System The worker places the housing 60 of the power storage system 50 on the fixture 66 so that the bottom surfaces of the legs 62 contact the upper surface of the fixture 66. As shown in FIG. 6 , a notch 180 is formed in a first short side of the side plate 92 of the leg 62. The worker adjusts the posture of the housing 60 so that the position of this notch 180 coincides with the position of the female thread portion 150 of the aluminum plate 80. At this time, a similar recess is also formed in a second short side (not shown in FIG. 6 ) of the aluminum plate 80. The worker adjusts the posture of the housing 60 so that the position of this recess coincides with the position of the female thread portion 152. In actual practice, it is thought that the process will be easier if the worker, for example, inserts the hexagon bolt 88 to some extent into the female thread portion 150 in advance and uses it as a guide to adjust the posture of the housing 60.

[0089] Once the notch 180 on the first short side and the recess on the second short side of the side panel 92 are aligned with the female threaded portions 150 and 152, respectively, the worker threads the hex bolt 88 through the notch 180, passing the washer 204 and spring washer 202 through it, and into the female threaded portion 150. Similarly, the worker threads the hex bolt 210 through the recess on the second short side, passing the washer 214 and spring washer 212 through it, and into the female threaded portion 152. When the worker firmly tightens the hex bolts 88 and 210, the leg 62 is fixed to the fastener 66, and as a result, the housing 60 is firmly fixed to the floor surface.

[0090] As shown in FIG. 7 , the length of the male threads of the hex bolts 88 and 210 is selected so that when they are screwed into the aluminum plate 80, their tips do not protrude from the bottom surface of the aluminum plate 80. In this embodiment, the thickness of the aluminum plate 80 is 25 mm, so the length of the male threads of the hex bolts 88 and 210 is 15 mm. By selecting the lengths of the hex bolts 88 and 210 in this manner, the risk of the adhesive gel sheets 82 and 84 peeling off from the bottom surface of the aluminum plate 80 can be minimized. This also prevents the tips of the hex bolts 88 and 210 from penetrating the adhesive gel sheets 82 and 84 and damaging the floor surface. Note that if the force used to tighten the hex bolts 88 and 210 is too great, the strength of the hex bolts 88 and 210 may be reduced. Therefore, the specified tightening torque must be strictly adhered to when tightening the bolts.

[0091] When the grid-connected energy storage system manufactured by the applicant was actually installed on the floor according to the above-mentioned configuration, it achieved seismic class S strength. The settings at that time were as follows: For the adhesive layers 100, 104 of the adhesive gel sheets 82 and 84, Tack Gel manufactured by Hirakata Giken Co., Ltd. was used.

[0092] Equipment weight 380kg Device width (short side) 1200mm Device width (long side) 2000mm Equipment height 1800mm Maximum horizontal acceleration 6m / s2 Adhesive strength: 0.017kg / mm 2 Adhesive gel sheet length 100mm Adhesive gel sheet width 100mm Number of adhesive gel sheets: 4 Fall safety factor: 3.4 Slip safety factor 2.0

[0093] 3. Effects of the First Embodiment According to the above embodiment, the aluminum plate 80 can be fixed to the floor surface using the adhesive gel sheets 82 and 84, and then the electricity storage system 50 can be fixed to the aluminum plate 80 from above. There is no need to drive anchors into the floor surface to fix the aluminum plate 80 to the floor surface. There is also no need to drill holes in the wall surface and fix the electricity storage system 50 using metal fittings. Therefore, it is possible to provide a fixing device that can install a small electricity storage system while meeting earthquake resistance standards and without damaging the wall or floor surface.

[0094] Furthermore, according to the above embodiment, by attaching the adhesive gel sheets 82 and 84 to both ends of the bottom surface of the aluminum plate 80 rather than to the entire surface, the power storage system 50 can be fixed to the floor surface with sufficient strength. This reduces the amount of adhesive gel sheets required compared to attaching adhesive gel sheets to the entire surface of the aluminum plate 80, thereby reducing costs. Also, by ensuring that the adhesive gel sheets 82 and 84 do not overlap each other, the aluminum plate 80 can be fixed to the floor surface while making effective use of the adhesive gel sheets. Furthermore, the adhesive gel sheets 82 and 84 have the same planar shape. Therefore, adhesive gel sheets with the same specifications can be used, reducing costs.

[0095] In the above embodiment, the fasteners 66 and 68 are used as a pair to secure the power storage system to a predetermined surface, such as a floor. Therefore, neither of the fasteners 66 nor 68 needs to have an area large enough to cover the entire surface of the power storage system facing the predetermined surface to which it is to be secured. Each fastener only needs to be large enough to securely hold one of the legs or other fastening parts of the power storage system. For this purpose, in the first embodiment, the aluminum plate 80 has a long side of 285 mm, a short side of 100 mm, and a thickness of 25 mm. As mentioned above, this size facilitates handling when positioning the fasteners 66 and 68. In the first embodiment, the female threads 150 and 152 are formed at the same distance from the long side of the aluminum plate 80. Therefore, when the power storage system 430 is secured to the fastener 66, the side surfaces of the legs of the power storage system 430 and the side surfaces of the aluminum plate 80 are parallel to each other. This results in a neat appearance when the power storage system 430 is secured to the fastener 66.

[0096] Furthermore, to securely fasten the power storage system to the aluminum plate 80 using hex bolts, the aluminum plate 80 must be thick enough. Here, the thickness is 25 mm, but it should be at least 10 mm, preferably 15 mm, and even more preferably 20 mm or greater. However, if the ratio of the thickness of the aluminum plate 80 to the length of its short side is too large, the aluminum plate 80 becomes unstable, which is undesirable. The thickness of the aluminum plate 80 should be at most one-half, preferably one-third, and more preferably one-quarter of the length of its short side. Because the power storage system is held by a pair of fastening devices, the power storage system can be stably fastened using small, easy-to-handle fastening devices. Furthermore, the female threads 150 and 152 are formed at the same distance from the opposing short sides of the aluminum plate 80. As a result, when the power storage system 430 is fastened to the fastening device 66, the legs of the power storage system 430 are positioned at the center of the long side of the aluminum plate 80. This effectively enables the power storage system 430 to be stably held by the fastening device 66.

[0097] From the perspective of the floor space required for installing the power storage system and the stability of the installation, the relationship between the length of the short side and the length of the long side of the aluminum plate 80 must also be considered. That is, the aluminum plate 80 must be large enough so that when the power storage system is installed on the fastener, it does not protrude to the front, rear, left, or right of the power storage system when viewed from above. In the first embodiment, the power storage system has a rectangular shape when viewed from above, with the long sides extending left and right and the short sides extending front and back. The fasteners 66 and 68 are provided along the two short sides. Therefore, the length of the aluminum plate 80 is approximately the same as the thickness of the power storage system. Furthermore, the width of the fasteners 66 and 68 is at most approximately one-fourth, and preferably one-sixth, of the width of the power storage system. If the fasteners are larger than this, handling the fasteners becomes somewhat difficult and costs increase.

[0098] In the above embodiment, the worker fixes the fixing devices 66 and 68 to the floor surface with adhesive gel sheets, and then fixes the power storage system to the fixing devices 66 and 68 with hex bolts. The use of hex bolts allows the power storage system to be attached and detached to the fixing devices 66 and 68. This has the effect of facilitating the return of the power storage system. Returning the power storage system refers to the procedure of requesting a delivery company or the like to send the power storage system to the manufacturer or supplier for repairs, for example, if the power storage system breaks down for some reason. It is assumed that the return of the power storage system will be performed by the user. When the power storage system is fixed with hex bolts as in the first embodiment, the user can easily remove the power storage system from its installed position. Therefore, the return of the power storage system can be easily performed. The fixing devices can be left in their fixed positions.

[0099] When installing the energy storage system after it has been returned from the send-back service, the user must secure the system to the retaining fixtures. This can also be easily done by the user. Moreover, because the position of the fixtures remains unchanged, the energy storage system can be installed in the correct position even if the user reinstalls it.

[0100] Third Second Embodiment In the first embodiment described above, the female threads 150 and 152 are formed on the line connecting the centers of the long sides of the rectangle on the top surface of the aluminum plate 80. However, the positions of the female threads are not limited to this. For example, the fixture 290 shown in FIG. 8 includes an aluminum plate 300 with adhesive gel sheets 82 and 84 attached to its bottom. The female threads 310 and 312 are formed on the top surface of the aluminum plate 300 at positions offset to one side from the line connecting the centers of the long sides of the rectangle.

[0101] However, the female screw portion may be formed at any position that is in accordance with the shape of the legs of the electricity storage system and allows the electricity storage system to be stably fixed.

[0102] Fourth Third Embodiment Fig. 9 shows a fixing device 340 according to a third embodiment of this disclosure. In the above-described embodiments, as shown in Figs. 4, 5, and 6, a female thread is provided on the upper surface of an aluminum plate 80, which is a metal plate, and the legs of the power storage system 50 are fixed to the aluminum plate 80 with a hexagonal bolt. However, in this third embodiment, a protrusion 356 for fixing the legs of the power storage system 50 is formed on the upper surface of an aluminum plate 350 similar to the aluminum plate 80, and female threads 352 and 354 are provided horizontally on the sides of this protrusion 356, and the legs are fixed with bolts.

[0103] For example, the fixing device 340 can be used when there is some kind of structure on the underside of the housing of the power storage system, making it difficult to tighten a hexagon bolt from the top surface of the aluminum plate 350. A plurality of recesses or holes may be formed in advance in the legs of the power storage system so that any of the fixing devices of the first to third embodiments can be used.

[0104] Fifth Fourth Embodiment 1. Configuration 10, a fixing tool 380 according to a fourth embodiment of the present disclosure is used as a pair with a fixing tool 382 as shown in Fig. 12. In this embodiment, fixing tool 380 and fixing tool 382 have the same configuration.

[0105] Fixture 380 includes aluminum plate 390. Four female threaded portions 392, 394, 396, and 398 are formed on aluminum plate 390. Female threaded portions 392 and 398 are through-holes formed from the top surface of aluminum plate 390 to the bottom surface. Female threads are formed on the inner circumferential surfaces of these female threaded portions 392 and 394. In this fourth embodiment, the legs of the power storage system main body are placed on the upper portions of female threaded portions 392 and 394, as shown in FIG. 6. At this time, the position of the power storage system main body is adjusted so that notches 180 and the like formed on the bottom surfaces of the legs of the power storage system main body are positioned at the female threaded portions 392 and 394. Then, hexagonal bolts 88 and 210 similar to those shown in FIG. 6 are screwed into the female threaded portions 392 and 394, thereby fixing the power storage system main body to fixture 380, as shown in FIG. 7.

[0106] Therefore, the size of aluminum plate 390 and the position and size of female thread portion 392 and the like will vary depending on the size, weight, center of gravity, and leg configuration of the electricity storage system main body to be fixed to fixing device 380. An example of the size of aluminum plate 390 will be described later with reference to FIG. 13. Note that female thread portion 392 and the like do not need to penetrate aluminum plate 390. However, in order to securely fix the electricity storage system to fixing device 380 with screws, it is preferable that female thread portion 392 and the like have a sufficient depth. Therefore, in this embodiment, female thread portions 392, 394, 396, and 398 are all through holes.

[0107] 11, in this embodiment, adhesive gel sheets 400, 402, 404, 406, 408, and 410 are attached to the entire back surface of aluminum plate 390. Although not clearly shown in FIG. 11, protective sheets are attached to the surfaces of these adhesive gel sheets, as in the first embodiment. A worker installing the electricity storage system can fix fixture 380 in any position by peeling off the protective sheets immediately before using fixture 380.

[0108] In this embodiment, the adhesive gel sheet 400 or the like is attached to the back surface of the aluminum plate 390 after the female screw portion 392 or the like has been formed. Therefore, no holes are formed in the adhesive gel sheet 400 or the like. This is because it is easier to attach the adhesive gel sheet 400 or the like to the aluminum plate 390 after forming the female screw portion 392 or the like in the aluminum plate 390 than the reverse procedure.

[0109] FIG. 12 shows an electricity storage system 430 including fastening devices 380 and 382 according to this embodiment. Fastening device 382 has the same configuration as fastening device 380. Electricity storage system 430 is the same as electricity storage system 50 shown in FIGS. 1 and 2 except for having fastening devices 380 and 382. FIG. 12 shows the electricity storage system 430 fixed to a floor surface using fastening device 380 and fastening device 382. In the example shown in FIG. 12, only two of the four female threads of fastening device 380 are used to fix electricity storage system 430 to fastening device 380. However, if four fixing holes or recesses are formed in the legs of the electricity storage system, all four female threads, including female threads 396 and 398, can be used.

[0110] 12, both of the fixing devices 380 and 382 are fixed to the legs of the power storage system 430 so that the legs of the power storage system 430 are positioned along the outer long side. However, the positional relationship between the power storage system 430 and the fixing devices is not limited to this relationship. For example, the fixing devices 380 and 382 may be used so that the legs of the power storage system 430 are positioned along the inner long side. In this way, even if there is an obstacle directly below the power storage system 430 and the fixing device 380 or the like cannot be positioned as shown in FIG. 12, the power storage system 430 can be fixed to the floor surface using the fixing devices 380 and 382.

[0111] 13 shows the size of the fixing tool 380 and the positions of the female threads 392, etc. As already mentioned, the size and other details shown here are just examples and will vary depending on the size, weight, center of gravity position, and leg configuration of the power storage system to be used in a fixed manner.

[0112] Referring to Figure 13, fastener 380 in this embodiment includes aluminum plate 390, which is a rectangular parallelepiped with a length of 305 mm, a width of 205 mm, and a thickness of 25 mm. In this embodiment, one aluminum plate 390 weighs 4.5 kg. Therefore, the weight of the two fasteners 380 and 382 is 9 kg. Female thread portion 392 is formed so that its center is located 52 mm from one long side and 27.5 mm from one short side of the rectangle. The diameter of female thread portion 392 varies depending on the size of the screw used for fastening.

[0113] Female thread portion 394 is formed at a position symmetrical to female thread portion 392 with respect to a central axis parallel to the short sides of fastener 380. Female thread portions 396 and 398 are formed at positions symmetrical to female thread portions 392 and 394 with respect to a central axis parallel to the long sides of fastener 380, respectively.

[0114] 12, internal threads 392 and 394 are used to secure power storage system 430 to fasteners 380 and 382. However, depending on the location of the holes in the legs of power storage system 430, internal threads 392 and 396, for example, may also be used.

[0115] 2. Effects The aluminum plate 390 of the fixture 380 according to this embodiment has a larger area than the aluminum plate 80 used in the first embodiment. Furthermore, the aluminum plate 390 is heavier than the aluminum plate 80. Therefore, the fixture 380 can fix the electricity storage system 430 to the floor surface more stably than the first embodiment and the like. Furthermore, in this fourth embodiment, an adhesive gel sheet is affixed to the entire bottom surface of the aluminum plate 390. Therefore, the aluminum plate 390 is fixed to the floor surface more firmly than in the first embodiment. As a result, the fixture 380 can fix the electricity storage system 430 more stably.

[0116] Furthermore, in this fourth embodiment, because female threads are formed in four locations as shown in Figure 13, the orientation of fixing tool 380 and fixing tool 382 does not matter when they are used. Fixing tool 380 is heavier than fixing tool 68 of the first embodiment. However, because the orientation of fixing tool 380 does not matter when installing, there is no need to rotate fixing tool 380 by 180 degrees when installing. As a result, there is also the effect that handling fixing tool 380 is not too difficult.

[0117] 6. Fifth embodiment 1. Configuration Referring to FIG. 14 , a fixing device 450 according to a fifth embodiment is paired with another fixing device of the same configuration to fix an energy storage system to a floor surface. Referring to FIG. 14 , the fixing device 450 includes an iron plate 460 made of stainless steel (SS) 400 and two studs 462 and 464 fixed to the top surface of the iron plate 460 in a direction perpendicular to the surface. Threads are formed on the outer periphery of the studs 462 and 464 within a predetermined range from the upper end. A female thread 466 is formed on the iron plate 460 near the stud 462, penetrating from the top surface to the bottom surface. A female thread is formed on the inner periphery of the female thread 466 throughout its entire length. The sizes and positions of the iron plate 460, the studs 462 and 464, and the female thread 466 will be described later with reference to FIG. 16 .

[0118] The studs 462 and 464 are provided by, for example, forming through holes in the iron plate 460 in advance and driving the studs into the back surface of the iron plate 460. Alternatively, the studs 462 and 464 can be fixed to the top surface of the iron plate 460 by electric welding.

[0119] Fig. 15 shows the back surface of iron plate 460. Referring to Fig. 15, in this fifth embodiment, as in the fourth embodiment, adhesive gel sheets 470, 472, 474, 476, 478, and 480 are attached to the entire back surface of iron plate 460. A protective sheet is attached to the entire upper surface of these adhesive gel sheets.

[0120] The size of the iron plate 460 will be described with reference to FIG. 16. The iron plate 460 is 305 mm long, 205 mm wide, and 6 mm thick. Each iron plate 460 weighs 3 kg. Therefore, when used as a pair of fixing devices 450, the total weight is 6 kg. The thickness of the iron plate 460 is much smaller than the aluminum plates used in the first four embodiments. However, even with this thickness, the configuration of this embodiment provides enough weight to stably fix the power storage system to the floor surface. In addition, as shown in FIG. 15, an adhesive gel sheet is attached to the entire bottom surface of the iron plate 460, allowing the fixing device 450 to be firmly fixed to the floor surface. The surface of the iron plate 460 is coated with a cationic paint such as epoxy resin.

[0121] The stud 462 is located 52 mm from one of the long sides of the iron plate 460 and 27.5 mm from one of the short sides. The stud 462 is located symmetrically with the stud 462 about a central axis parallel to the short sides of the iron plate 460. Threads are formed over a predetermined area from the top of the outer periphery of the studs 462 and 464. In this embodiment, the threads are formed over substantially the entire outer periphery of the studs 462 and 464. The studs 462 and 464 must be at least long enough to allow the nuts 510 to be fastened to the tops of the studs when they are inserted into the notches 180 in the legs of the energy storage system 430. The length of the studs 462 and 464 may be selected, for example, from a range of approximately 10 mm to 50 mm. Studs that are too long may interfere with the installation process. Therefore, it is more desirable to select the upper limit of the length of these studs from a range such as 40 mm or 30 mm, so that the portion that protrudes after the nut 510 is fastened is not too long. The thickness of the studs 462 and 464 varies depending on the diameter of the fixing notch or hole formed in the leg of the energy storage system to be fixed. For example, bolt sizes of M8 or M10 are common. If the studs 462 and 464 are too thin, it is not preferable from the standpoint of strength.

[0122] The female thread portion 466 is used when removing the iron plate 460 fixed to the floor surface from the floor surface. In this embodiment, the female thread portion 466 is formed near the stud 462, at a position 15 mm from one of the long sides and 30 mm from one of the short sides of the iron plate 460. A screw thread is formed over the entire inner circumferential surface of the female thread portion 466.

[0123] 17 and 18 show a power storage system 500 including fasteners 450 and 452 according to this embodiment. The fastener 452 has the same configuration as the fastener 450. The power storage system 500 is the same as the housing 60 shown in FIGS. 1 and 2 except for the fasteners 450 and 452. In this embodiment, unlike the first four embodiments, the fastener 450 has two studs, such as a stud 462. Therefore, as shown in FIG. 18, for example, the worker positions the power storage system 500 so that the stud 462 passes through a notch 180 formed in the bottom of the leg 62 of the power storage system 430. Then, the worker positions the power storage system 500 so that the stud 464 passes through another notch (not shown) formed on the rear side of the bottom of the leg 62. Furthermore, the worker fits a spring washer and a nut 510 onto the portion of the stud 462 that protrudes from the bottom surface of the leg of the power storage system 500. A worker tightens the nuts 510 to secure the power storage system 500 to the fixture 450. The same applies to the studs 464.

[0124] In this way, since the power storage system 500 is fixed to the fixing device 450 using nuts, it is also easy for a worker to remove the power storage system 500 from the fixing device 450. When the power storage system 500 needs to be sent back, the user can easily remove the power storage system 500 from the fixing device 450. In addition, the user can easily fix the power storage system 500 to the fixing device 450 after it has been returned from the send-back.

[0125] 19 to 22, when fixing device 450 is no longer needed as a result of removing power storage system 500, the worker removes fixing device 450 from the floor surface as follows. That is, the worker screws removal screw 520 into female thread portion 466. When the worker screws removal screw 520 deep enough, its tip reaches the bottom surface of iron plate 460 (FIG. 20). When the worker further screws removal screw 520, the tip of removal screw 520 protrudes downward from the opening of female thread portion 466 in the bottom surface of iron plate 460 (FIG. 21). As a result, the portion of iron plate 460 surrounding female thread portion 466, particularly the side of iron plate 460 nearest female thread portion 466, is first peeled off from the floor surface. At this time, a portion 530 of the adhesive gel sheet directly below female thread portion 466 adheres to the tip of removal screw 520. As the worker further tightens the removal screw 520, the rotational motion of the screw is converted into linear motion using the same principle as a pantograph jack, gradually peeling the remaining portions of the iron plate 460 off the floor ( FIG. 22 ). Finally, the worker can manually or with some other tool hold and pull up the edge of the iron plate 460 that has been lifted off the floor by the removal screw 520, thereby removing the entire iron plate 460 from the floor. At this time, a portion 530 of the adhesive gel sheet attached to the bottom surface of the iron plate 460 directly below the female thread portion 466 remains on the floor. However, the remaining portion remains attached to the bottom surface of the iron plate 460 and separates from the floor. This is because the metal fittings are more adhesive than the floor surface. When the iron plate 460 is slightly lifted off the floor, as shown in FIG. 21 , the worker can also use a tool such as a crowbar as leverage to remove the iron plate 460.

[0126] By providing the female thread portion 466 in this way, even a fixing tool 450 that is fixed to the floor surface with a highly adhesive gel can be easily removed from the floor surface.

[0127] When removing fixing device 450 from the floor surface using removal screw 520 in this manner, there is a possibility that the floor surface will be damaged if the tip of removal screw 520 comes into direct contact with the floor surface. As described above, by selecting the position where female thread portion 466 is formed so that the opening on the bottom surface is covered with an adhesive gel sheet, the possibility that the tip of removal screw 520 will come into direct contact with the floor surface is reduced. As a result, it is possible to reduce the possibility that the floor surface will be damaged when fixing device 450 is removed from the floor surface.

[0128] Furthermore, the position of the female thread portion 466 is selected so that it is covered by the legs of the power storage system 500 when the power storage system 500 is fixed to the upper surface of the fixing tool 450. As a result, no dust will get inside the female thread portion 466 after the power storage system 500 is installed. This reduces the risk of dust getting in the way when screwing the removal screw 520 into the female thread portion 466 when removing the fixing tool 450, which will hinder the removal work.

[0129] 2. Effects According to the fifth embodiment, the energy storage system is secured to the floor using studs, eliminating the need for a thick metal plate. Furthermore, two studs are positioned at the same position from each of the two short sides of the metal plate. That is, the two studs are positioned symmetrically with respect to a central axis parallel to the short sides of the metal plate. As a result, the energy storage system is secured to the center of the metal plate. Therefore, despite using a thinner metal plate than in the other embodiments, the energy storage system can be stably installed on the floor. Furthermore, the two studs are positioned offset toward one of the long sides. This allows the orientation of the fastener 450 to be adjusted depending on the installation location, making it easier to install the energy storage system. In addition, in the fifth embodiment, the iron plate 460 is secured to the floor using a wide adhesive gel, as in the fourth embodiment. Therefore, despite the iron plate 460 being lighter than the previous four embodiments, the energy storage system can be stably secured to the floor. Furthermore, the iron plate 460 has a female thread 466 for removing the fastener 450 from the floor using the principle of a jack. This has the effect of allowing the fixing device 450 to be easily removed when it is no longer needed. At this time, the risk of damaging the floor surface can also be reduced. Furthermore, in this embodiment, the studs 462 and 464 are also provided at positions where they are the same distance from the long side of the iron plate 460. As a result, when the power storage system 500 is fixed to the fixing device 450, the side surfaces of the legs of the power storage system 500 become parallel to the long side of the iron plate 460, which has the effect of improving the appearance.

[0130] 7th Variation In the first to fourth embodiments, aluminum plates 80, 300, 350, and 390 are used as the main components of the fasteners. In the fifth embodiment, steel plate 460 is used. However, this disclosure is not limited to such embodiments. Metals other than aluminum and steel can also be used. However, the metal must be selected taking into consideration durability, weight, appearance, and cost. From this perspective, it is desirable to use aluminum, aluminum alloys containing aluminum, or steel (essentially steel alloys) products such as SS400. Aluminum and aluminum alloys are generally durable, easy to process, and exhibit little change in appearance over time due to rust or other factors. Aluminum's moderate mass makes it easy to transport, even when manually transported to a balcony or other location. Furthermore, aluminum offers the advantage of easy fine adjustment during positioning. Furthermore, using steel-based products such as SS400 is easy to obtain, advantageous in terms of cost, and sufficiently strong. Furthermore, steel-based metal plates can be prevented from rusting by applying an appropriate coating.

[0131] In the first to third embodiments described above, as shown in Fig. 7, for example, two adhesive gel sheets 82 and 84 have the same size and shape and are attached to both ends of the bottom surface of the aluminum plate 80, as far apart as possible and in positions symmetrical about the center of the aluminum plate 80 in the longitudinal direction. This allows the fixing device 66 to stably fix the housing 60 against forces applied in the left-right direction in Fig. 7. Furthermore, the adhesive gel sheets 82 and 84 are attached to the aluminum plate 80 over almost the entire bottom surface of the aluminum plate 80, from one long side to the other long side. This allows the fixing device 66 to stably fix the housing 60 against forces applied in the front-to-rear direction in Fig. 7.

[0132] However, this disclosure is not limited to such embodiments. Instead of two adhesive gel sheets, three or more adhesive gel sheets may be used, as in the fourth and fifth embodiments. The positions at which these adhesive gel sheets are attached do not necessarily have to be symmetrical with respect to the center of the bottom surface of the metal plate. As long as the required earthquake resistance is met, adhesive gel sheets of any shape may be attached to any position on the bottom surface of the metal plate. For example, as shown in the fourth embodiment (FIG. 11) and the fifth embodiment (FIG. 15), adhesive gel sheets may be attached to the entire bottom surface of an aluminum plate or iron plate. The larger the area of ​​the adhesive gel sheet, the greater the overall adhesive force. This has the effect of enabling the fixing device to hold the energy storage system more stably.

[0133] In the first, second, and fourth embodiments, the female thread portion penetrates from the top to the bottom of a metal plate such as an aluminum plate or a steel plate. This is because forming a through hole is easier than forming a hole partway through, simplifying the manufacturing process and shortening the manufacturing time. However, this disclosure is not limited to such embodiments. The female thread portion may be formed so as not to penetrate the metal plate. However, as shown in the fifth embodiment, forming at least one through hole from the top to the bottom of the metal plate makes it convenient to remove the fastener from the floor surface.

[0134] In the first to third embodiments, the number of female threads was two per metal plate. However, as shown in the fourth embodiment, the number of female threads may be three or more. However, unlike the structure disclosed in Patent Document 1, the female threads do not need to be on different straight lines. In the case of Patent Document 1, if at least three female threads are not on different straight lines, there is a risk that a portion of the adhesive gel sheet will adhere to the floor when the laminated plate is moved on the floor for positioning. However, in this disclosure, the fixing devices fix the energy storage system as a pair. Therefore, the fixing devices can be easily positioned. The protective sheet of the adhesive gel sheet is peeled off just before the fixing device is fixed to the floor. Therefore, there is almost no risk of the fixing device adhering to an inappropriate position. As a result, there is no need to provide three or more female threads. In fact, increasing the number of female threads increases processing costs and increases the number of operations required for the hexagonal bolts during fixing. Therefore, forming three or more female threads is usually unnecessary. However, as shown in the fourth embodiment, when the screw holes are positioned so that the orientation of the fixing device does not need to be taken into consideration, the unique effects of such an arrangement can be obtained, so even if the processing costs increase, it is worthwhile.

[0135] In the above embodiment, the aluminum plate 80 is a rectangular parallelepiped. However, the metal plate is not limited to a rectangular parallelepiped, and may have any shape as long as the bottom surface is parallel to the floor and the power storage system 50 can be stably supported. Furthermore, the iron plate 460 used in the fifth embodiment is very thin compared to the other embodiments, and is more appropriately called a plate than a rectangular parallelepiped. However, when adopting a configuration such as that of the fifth embodiment, it is not necessary to form a female thread portion on the iron plate 460 for fastening the power storage system. As a result, even a thin metal plate can be used in the same way as the iron plate 460, as long as it is made of a material with sufficient strength and weight.

[0136] In the first, second, and fourth embodiments, the aluminum plate, which is the metal plate, is a flat rectangular parallelepiped, with its top and bottom surfaces parallel. However, if the floor of the planned installation site, such as a balcony, has a slight incline, one of the surfaces may be inclined so that the surface supporting the energy storage system is horizontal. The metal plate may remain rectangular, and the bottom surface of the adhesive gel sheet may be inclined. Furthermore, if the floor of the balcony or other location has a small step, adhesive gel sheets of different thicknesses may be used to eliminate the step. This also applies when a protrusion is formed on the top surface of the metal plate, as in the third embodiment. This allows the energy storage system to be stably fixed even on an uneven floor surface.

[0137] Eighth Effect As described above, according to this disclosure, the power storage system can be stably and safely fixed to the floor surface without damaging or drilling holes in the floor or wall surface. Therefore, no special tools are required and the power storage system can be easily installed. Costs can also be kept low. Disposal after removing the power storage system is easy and the risk of damaging the floor surface can be reduced.

[0138] 9. Additional Notes Regarding Other Possible Embodiments Possible embodiments of this disclosure are described below.

[0139] (Supplementary Note 1) A plurality of female thread portions including a first female thread portion and a second female thread portion are formed on the metal plate, and these female thread portions may be on a single straight line. (Note 2) The metal plate does not need to have any female threads formed other than the first female thread and the second female thread. (Supplementary Note 3) The metal plate may have a rectangular parallelepiped shape, and its thickness may be at most half the length of its short side, preferably one-third or less, and more preferably one-quarter or less. (Appendix 4) The third female thread portion and the fourth female thread portion may be formed at positions that are the same distance from the second long side and may be equal to the distance between the first female thread portion and the first long side. (Additional Note 5) The distance between the third female thread portion and the first short side may be equal to the distance between the fourth female thread portion and the second short side. (Additional Note 6) The distance between the third female thread portion and the first short side may be equal to the distance between the first female thread portion and the first short side. (Supplementary Note 7) The through-hole may be formed at a position where the opening on the bottom side of the through-hole is in an area where no adhesive gel is attached.

[0140] The embodiments disclosed herein are merely examples, and the present disclosure is not limited to the above-described embodiments. The scope of the present disclosure is defined by the claims in the appended claims, taking into consideration the description of the detailed description of the invention, and includes all modifications within the meaning and scope equivalent to the wordings described therein. [Explanation of symbols]

[0141] 50, 430, 500 Energy Storage System 60 cabinets 62, 64 Legs 66, 68, 290, 340, 380, 382, ​​450, 452 Fixtures 80, 300, 350, 390 aluminum plate 82, 84, 400, 402, 404, 406, 408, 410, 470, 472, 474, 476, 478, 480 Adhesive Gel Sheets 86 Bottom plate 88, 210 hex bolts 92, 94 Side panels 96, 98 Mounting plate 100, 104 adhesive layer 102, 106 Protective sheet 150, 152, 310, 312, 352, 354, 392, 394, 396, 398, 466 Female thread 180 notch 202, 212 Spring washer 204, 214 Washer 356 Convex 460 Iron Plate 462, 464 studs 510 Nut 520 Removal screw 530 Part of adhesive gel sheet

Claims

1. a metal plate having a top surface and a bottom surface; An adhesive gel attached to the bottom surface of the metal plate; a fixing portion for detachably fixing the power storage system to the upper surface of the metal plate, the adhesive gel includes a first adhesive gel sheet and a second adhesive gel sheet; The first adhesive gel sheet and the second adhesive gel sheet are attached to the bottom surface so as not to overlap each other.

2. The power storage system fixing device according to claim 1 , wherein the first adhesive gel sheet and the second adhesive gel sheet have the same planar shape.

3. The base is rectangular; The first adhesive gel sheet is attached to the vicinity of a first short side of the rectangle, The electricity storage system fixing device according to claim 1 or 2, wherein the second adhesive gel sheet is attached to a portion of the rectangle adjacent to a second short side of the rectangle.

4. the top surface and the bottom surface are parallel; The metal plate is A first female thread portion formed from the top surface toward the bottom surface toward the first adhesive gel sheet attached to the bottom surface; a second female thread portion formed from the top surface toward the bottom surface toward the second adhesive gel sheet attached to the bottom surface, 4. The energy storage system fixing device according to claim 1, wherein the fixing portion includes a first male screw and a second male screw that are combined with the first female threaded portion and the second female threaded portion, respectively, and that fix the legs of the energy storage system to the upper surface of the metal plate.

5. The power storage system fixing device according to claim 4 , wherein the first female thread portion and the second female thread portion penetrate from the top surface to the bottom surface.

6. 6. The power storage system fixing device according to claim 5, wherein the first adhesive gel sheet and the second adhesive gel sheet are attached to the bottom surface so as to cover the openings on the bottom surfaces of the first female threaded portion and the second female threaded portion, respectively.

7. 7. The energy storage system fixing device according to claim 5 or 6, wherein the lengths of the first male screw and the second male screw are selected so that a tip of the male screw does not protrude from the bottom surface when the male screw is fixed to the first female threaded portion and the second female threaded portion of the metal plate, respectively.

8. The planar shapes of the first adhesive gel sheet and the second adhesive gel sheet are equal squares, and the length of one side of the square is substantially equal to the length of the short side of the bottom surface of the metal plate. The storage system fixing device according to any one of claims 1 to 7.

9. A metal plate having a top surface and a bottom surface; An adhesive gel attached to the bottom surface of the metal plate; a fixing portion for detachably fixing the power storage system to the upper surface of the metal plate, The metal plate is A first female thread portion formed from the top surface toward the bottom surface toward a first region of the bottom surface to which the adhesive gel is attached; a second female thread portion formed from the top surface toward the bottom surface toward a second region of the bottom surface that is different from the first region, the fixing portion includes a first male screw and a second male screw that are respectively combined with the first female thread portion and the second female thread portion and fix the legs of the energy storage system to the upper surface of the metal plate.

10. A storage system fixing device as described in Claim 9, wherein the first female threaded portion and the second female threaded portion penetrate from the top surface to the bottom surface.

11. The length of each of the first male screw and the second male screw is selected so that when fixed to the first female threaded portion and the second female threaded portion of the metal plate, respectively, the tip of the male screw does not protrude from the bottom surface.

12. A storage system fixing device as described in any one of claims 9 to 11, wherein the fixing portion includes a first stud and a second stud fixed on the upper surface with a gap between them.

13. A metal plate having a top surface and a bottom surface; An adhesive gel attached to the bottom surface of the metal plate; a fixing portion for detachably fixing the power storage system to the upper surface of the metal plate, The fixing portion includes a first stud and a second stud fixed to the upper surface with a space therebetween.

14. the upper surface of the metal plate has a rectangular shape having a first short side, a second short side, a first long side, and a second long side; The electrical storage system fixing device according to claim 13 , wherein the first stud and the second stud are formed at positions equidistant from the first long side.

15. 15. The energy storage system fixing device according to claim 12, wherein the metal plate further has a through-hole formed from the top surface to the bottom surface at a position different from either a position where the first stud or a position where the second stud is provided.

16. The power storage system fixing device according to claim 15 , wherein the through-hole is formed at a position where an opening on the bottom side of the through-hole corresponds to an area where the adhesive gel is applied.

17. 17. The power storage system fixing device according to claim 15 or 16, wherein the through hole is formed at a position where the opening on the upper surface side of the through hole is covered by a part of the power storage system fixed to the power storage system fixing device.

18. A power storage system fixing device according to any one of claims 1 to 17, a power storage system fixing set for fixing the power storage system to a predetermined surface using the pair of power storage system fixing devices; 19. A metal plate having a top surface and a bottom surface; An adhesive gel attached to the bottom surface of the metal plate; a pair of power storage system fixing devices including a fixing portion for detachably fixing the power storage system to the upper surface of the metal plate; a power storage system fixing set for fixing the power storage system to a predetermined surface using the pair of power storage system fixing devices;

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