Power storage equipment

Abstract

Power storage equipment is provided with a first electric board, a second electric board, and a pipe member that connects a first through hole in the first electric board and a second through hole in the second electric board. At least one of the first electric board and the second electric board houses at least one of a power storage element and a power converter. The pipe member is provided with a first member, and the first member is provided with a first connection part that is disposed in the first electric board and connected to the first electric board.

Description

Power storage equipment

[0001] The present invention relates to power storage equipment.

[0002] Patent Document 1 discloses an electrical equipment including a plurality of boxes in which electrical devices are installed and housed, a telescopic connecting body that connects these boxes to each other, and a wiring duct, and having a function of an integrated equipment by connecting each electrical device in each box.

[0003] Japanese Patent Laid-Open No. 2-131306

[0004] In the electrical equipment disclosed in the above Patent Document 1, as shown in FIG. 3 and the like, a telescopic connecting body (pipe member) is connected to a plurality of boxes from the outside of the boxes. Therefore, when the distance between the plurality of boxes is small, or when the site where the boxes are installed has a complicated terrain, or when there are protrusions on the outer surface of the boxes, etc., it may be difficult to connect the pipe member to the boxes.

[0005] The present invention has been made by the inventors of the present application newly paying attention to the above problems, and an object thereof is to provide a power storage equipment capable of easily connecting between switchboards via a pipe member.

[0006] The power storage equipment according to one aspect of the present invention includes a first switchboard, a second switchboard, and a pipe member that connects a first through-hole of the first switchboard and a second through-hole of the second switchboard, and at least one of the first switchboard and the second switchboard houses at least one of a power storage element and a power converter. The pipe member includes a first member and a second member. The first member is disposed in the first switchboard and includes a first connection portion connected to the first switchboard. The second member is disposed in the second switchboard and includes a second connection portion connected to the second switchboard.

[0007] The power storage equipment according to another aspect of the present invention includes a first switchboard, a second switchboard, and a pipe member that connects a first through-hole of the first switchboard and a second through-hole of the second switchboard, and at least one of the first switchboard and the second switchboard houses at least one of a power storage element and a power converter. The pipe member includes a first member. The first member is disposed in the first switchboard and includes a first connection portion connected to the first switchboard.

[0008] According to the energy storage equipment of the present invention, electrical panels can be easily connected to each other.

[0009] Figure 1 is a perspective view showing the configuration of an energy storage system according to an embodiment. Figure 2 is a perspective view showing the configuration of four electrical panels included in the energy storage system according to an embodiment. Figure 3 is a perspective view showing the configuration of an energy storage device included in the electrical panel according to an embodiment. Figure 4 is a perspective view showing the configuration of a pipe member and its surroundings with the first and second members of the pipe member according to an embodiment separated. Figure 5 is a perspective view showing the configuration of a pipe member and its surroundings with the first and second members of the pipe member according to an embodiment connected. Figure 6 is a cross-sectional view showing the configuration of a pipe member and its surroundings with the first and second members of the pipe member according to an embodiment connected. Figure 7 is an exploded perspective view showing each component when the pipe member according to an embodiment is disassembled. Figure 8 is an exploded perspective view showing each component when the pipe member according to an embodiment is disassembled. Figure 9 is a cross-sectional view showing the configuration of a pipe member and its surroundings with the first and second members of the pipe member according to an embodiment separated. Figure 10 is a cross-sectional view showing the configuration of a pipe member and its surroundings before the first and second members of the pipe member according to an embodiment compress the first and second sealing members. Figure 11 is a cross-sectional view showing the structure of the pipe member and its surroundings after the first and second members of the pipe member according to the embodiment have compressed the first and second sealing members. Figure 12 is a cross-sectional view showing the structure of the pipe member and its surroundings when the first and second members of the pipe member according to the embodiment are connected. Figure 13 is a cross-sectional view showing the structure of the pipe member and its surroundings according to modification 1 of the embodiment. Figure 14 is a cross-sectional view showing the structure of the pipe member and its surroundings according to modification 2 of the embodiment. Figure 15 is a cross-sectional view showing the structure of the pipe member and its surroundings according to modification 3 of the embodiment. Figure 16 is a cross-sectional view showing the structure of the pipe member and its surroundings according to modification 4 of the embodiment.

[0010] (1) An energy storage system according to one aspect of the present invention comprises a first electrical panel, a second electrical panel, and a pipe member connecting a first through-hole of the first electrical panel and a second through-hole of the second electrical panel, wherein at least one of the first electrical panel and the second electrical panel houses at least one of an energy storage element and a power converter, and the pipe member comprises a first member and a second member, wherein the first member is disposed within the first electrical panel and has a first connection portion connected to the first electrical panel, and the second member is disposed within the second electrical panel and has a second connection portion connected to the second electrical panel.

[0011] According to one aspect of the present invention, a piping member connecting a first through-hole in a first electrical panel and a second through-hole in a second electrical panel comprises a first member and a second member. The first member is located inside the first electrical panel and has a first connecting portion connected to the first electrical panel, and the second member is located inside the second electrical panel and has a second connecting portion connected to the second electrical panel. Thus, the piping member connecting the first electrical panel and the second electrical panel is composed of two members, a first member and a second member. By locating the first connecting portion of the first member inside the first electrical panel and connecting it to the first electrical panel, the first member can be installed in the first electrical panel by working from inside the first electrical panel. By locating the second connecting portion of the second member inside the second electrical panel and connecting it to the second electrical panel, the second member can be installed in the second electrical panel by working from inside the second electrical panel. As a result, even when it is difficult to install the piping member from the outside of the first and second electrical panels, the piping member can be installed in the first and second electrical panels from inside the first and second electrical panels, making the installation of the piping member easier. Therefore, this energy storage system allows for easy connection between electrical panels.

[0012] (2) In the energy storage equipment described in (1) above, the first through hole may be elongated in a predetermined direction.

[0013] According to the energy storage equipment described in (2) above, since the first through-hole of the first electrical panel is long in a predetermined direction, the pipe member can also be made long in that predetermined direction. This allows many wires or pipes to be passed through the pipe member along the predetermined direction.

[0014] (3) In the energy storage equipment described in (1) or (2) above, the first member may further include a cylindrical portion that penetrates the first through hole, and the cylindrical portion may be connected to the second member.

[0015] According to the energy storage equipment described in (3) above, the cylindrical portion of the first member of the pipe member passes through the first through-hole and is connected to the second member, thereby allowing the first electrical panel and the second electrical panel to be easily connected via the pipe member.

[0016] (4) In the energy storage equipment described in (3) above, the cylindrical portion may penetrate the second through hole.

[0017] According to the energy storage equipment described in (4) above, the cylindrical portion of the first member of the pipe member passes through the first through-hole and the second through-hole, so that the first member and the second member can be easily connected by working inside the second electrical panel.

[0018] (5) The energy storage equipment described in any one of (1) to (4) above may be such that the first member further comprises a first cylindrical portion that penetrates the first through hole, the second member further comprises a second cylindrical portion that penetrates the second through hole, and the first cylindrical portion is connected to the second cylindrical portion.

[0019] According to the energy storage equipment described in (5) above, the configuration inside the second electrical panel can be simplified because the second cylindrical portion of the second component passes through the second through-hole. Therefore, work inside the second electrical panel becomes easier.

[0020] (6) The energy storage equipment described in any one of (1) to (5) above may further include a first sealing member disposed between the first connection part and the first electrical panel, and a second sealing member disposed between the second connection part and the second electrical panel.

[0021] According to the energy storage equipment described in (6) above, the first sealing member is placed between the first connection and the first electrical panel, thereby sealing the space between the first member and the first electrical panel. The second sealing member is placed between the second connection and the second electrical panel, thereby sealing the space between the second member and the second electrical panel. This makes it easy to seal the space between the pipe member and the first and second electrical panels.

[0022] (7) The energy storage equipment described in any one of (1) to (6) above may further include a third sealing member disposed between the first member and the second member.

[0023] According to the energy storage equipment described in (7) above, the third sealing member is placed between the first and second members of the pipe, making it easy to seal the space between the first and second members.

[0024] (8) In the energy storage equipment described in any one of (1) to (7) above, the pipe member may further include a third member that narrows the opening of the pipe member.

[0025] According to the energy storage equipment described in (8) above, the opening area of ​​the pipe member can be reduced by arranging a third member that narrows the opening of the pipe member. Alternatively, one opening can be divided into multiple openings. This improves fire resistance and allows for optimization of the member arrangement.

[0026] (9) Another embodiment of the present invention provides an energy storage system comprising a first electrical panel, a second electrical panel, and a pipe member connecting a first through-hole of the first electrical panel and a second through-hole of the second electrical panel, wherein at least one of the first electrical panel and the second electrical panel houses at least one of an energy storage element and a power converter, and the pipe member comprises a first member, the first member comprising a first connection portion disposed within the first electrical panel and connected to the first electrical panel.

[0027] According to the energy storage equipment described in (9) above, the pipe member connecting the first through-hole of the first electrical panel and the second through-hole of the second electrical panel comprises a first member, the first member being located inside the first electrical panel and having a first connection portion connected to the first electrical panel. By locating the first connection portion of the first member of the pipe member inside the first electrical panel and connecting it to the first electrical panel, the first member can be attached to the first electrical panel by working from inside the first electrical panel. As a result, even when it is difficult to attach the pipe member from the outside of the first electrical panel, the pipe member can be attached to the first electrical panel from the inside, making the attachment of the pipe member easy. Therefore, with this energy storage equipment, electrical panels can be easily connected via pipe members.

[0028] (10) In the energy storage equipment described in (9) above, the first through hole may be elongated in a predetermined direction.

[0029] According to the energy storage equipment described in (10) above, since the first through-hole of the first electrical panel is long in a predetermined direction, the pipe member can also be made long in a predetermined direction. This allows many wires or pipes to be passed through the pipe member along a predetermined direction.

[0030] (11) In the energy storage equipment described in (9) or (10) above, the first member may further include a cylindrical portion that penetrates the first through hole, and the cylindrical portion may be connected to the second electrical panel.

[0031] According to the energy storage equipment described in (11) above, in the pipe member, the cylindrical portion of the first member passes through the first through-hole and is connected to the second electrical panel, thereby allowing the first electrical panel and the second electrical panel to be easily connected via the pipe member.

[0032] (12) In the energy storage equipment described in any one of (9) to (11) above, a first sealing member disposed between the first member and the first electrical panel, and a fourth sealing member disposed between the first member and the second electrical panel may be further provided.

[0033] According to the energy storage equipment described in (12) above, the first sealing member is placed between the first member and the first electrical panel, thereby sealing the space between the first member and the first electrical panel. The fourth sealing member is placed between the first member and the second electrical panel, thereby sealing the space between the first member and the second electrical panel. This makes it easy to seal the space between the pipe member and the first and second electrical panels.

[0034] (13) In the energy storage equipment described in any one of (9) to (12) above, the pipe member may further include a third member that narrows the opening of the pipe member.

[0035] According to the energy storage equipment described in (13) above, the opening area of ​​the pipe member can be reduced by arranging a third member that narrows the opening of the pipe member. Alternatively, one opening can be divided into multiple openings. This improves fire resistance and allows for optimization of the arrangement of the members.

[0036] The following description of an energy storage system according to an embodiment (including its modifications) of the present invention will be given with reference to the drawings. The embodiments described below are all general or specific examples. The numerical values, shapes, materials, components, arrangement and connection configurations of components, manufacturing processes, and the order of manufacturing processes shown in the following embodiments are examples and are not intended to limit the present invention. Dimensions and other specifications are not strictly illustrated in each figure. In each figure, the same or similar components are denoted by the same reference numerals.

[0037] In the following description and drawings, the X-axis direction is defined as the direction in which the first and second electrical panels of the electrical equipment are aligned, the direction in which the first through-hole penetrates the first electrical panel, the direction in which the second through-hole penetrates the second electrical panel, the direction in which the first and second members of the pipe member are aligned, the direction in which the cylindrical portion of the first member of the pipe member penetrates the first and second through-holes, the direction in which the pipe of the pipe member penetrates, or the width direction (left-right direction) of the enclosure of the first electrical panel, etc. The Y-axis direction is defined as the depth direction (front-back direction) of the enclosure of the first electrical panel, etc. The Z-axis direction is defined as the height direction of the enclosure of the first electrical panel, etc., the direction in which the shelves of the enclosure and the energy storage device are aligned, or the vertical direction. These X-axis, Y-axis, and Z-axis directions intersect (orthogonal in this embodiment) with each other.

[0038] In the following explanation, the X-axis positive direction refers to the direction of the X-axis arrow, and the X-axis negative direction refers to the direction opposite to the X-axis positive direction. When simply referred to as the X-axis direction, it refers to either the X-axis positive direction or the X-axis negative direction, or either direction. Unless otherwise specified, the center and ends of a member in the X-axis direction refer to the parts located in the center and ends when the member is divided into three parts in the X-axis direction. The same applies to the Y-axis and Z-axis directions. The X-axis direction may be called the first direction, the Y-axis direction the second direction, and the Z-axis direction the third direction. Expressions indicating relative directions or orientations, such as parallel and orthogonal, include cases where they are not strictly those directions or orientations. When two directions are parallel (or orthogonal), it means not only that the two directions are perfectly parallel (or orthogonal), but also that they are substantially parallel (or orthogonal), that is, that they include a difference of, for example, a few percent. In the following explanation, when "insulation" is used, it means "electrical insulation". The volume resistivity of an insulating material is 1 × 10⁻⁶ ６ Preferably Ωm or more, 1 × 10 ７ Ωm or greater is more preferable, 1 × 10 １０ A value of Ωm or greater is even more preferable.

[0039] (Embodiment) [1. General Description of Energy Storage Equipment 1] First, a general description of the energy storage equipment 1 in this embodiment will be given. Figure 1 is a perspective view showing the configuration of the energy storage equipment 1 according to this embodiment.

[0040] The energy storage device 1 is a device that charges and discharges electricity to supply power to an external power load. The energy storage device 1 is a stationary battery used for commercial or household purposes, and is used for power storage or power supply purposes. In this embodiment, the energy storage device 1 is an outdoor-specification device that is installed outdoors (or can be installed outdoors) and has the necessary dustproof and waterproof properties for outdoor installation. The energy storage device 1 can also be installed on a large mobile vehicle such as a ship or a railway vehicle for an electric railway, and can be used as a battery for the large mobile vehicle. Examples of railway vehicles for electric railways include electric trains, monorails, linear motor cars, and hybrid trains equipped with both diesel engines and electric motors.

[0041] As shown in FIG. 1, the power storage facility 1 includes a switchboard 100, an air conditioner 200 disposed above the switchboard 100, a switchboard 300, and an air conditioner 400 disposed above the switchboard 300. Specifically, the power storage facility 1 includes a plurality of switchboards 100, a plurality of air conditioners 200 disposed above the plurality of switchboards 100, one switchboard 300, and a plurality of air conditioners 400 disposed above the one switchboard 300. In the present embodiment, ten switchboards 100 arranged in five sets in the X-axis direction and two switchboards 100 arranged side by side in the Y-axis direction, and one switchboard 300 located in the positive X-axis direction thereof are arranged. In each switchboard 100, one air conditioner 200 is disposed above one switchboard 100. Above the switchboard 300, four air conditioners 400 are arranged such that two air conditioners 400 arranged side by side in the Y-axis direction are arranged in two sets in the X-axis direction.

[0042] These switchboards 100 and 300 are arranged adjacent to each other in the X-axis direction or the Y-axis direction. Being arranged adjacent to each other in the X-axis direction means being arranged at a relatively close position in the X-axis direction, including the case of being in contact in the X-axis direction and the case of being close but not in contact in the X-axis direction. The same applies to the case of being arranged adjacent to each other in the Y-axis direction. In the present embodiment, the switchboards 100 and 300 are arranged at a predetermined interval in the X-axis direction and the Y-axis direction.

[0043] In the present embodiment, the switchboard 100 is a power storage board that houses a power storage element (power storage element 122 described later). The switchboard 300 is a power conversion board that houses a power converter. The power received from the outside is converted by the switchboard 300 and then supplied to the switchboard 100 for charging in the switchboard 100. The power discharged from the switchboard 100 is converted by the switchboard 300 and then supplied to the outside.

[0044] The air conditioning devices 200 and 400 are devices having at least one of the functions of cooling and heating. The air conditioning device 200 cools or warms the internal space of the switchboard 100 to cool or warm the power storage device 120 (particularly the power storage element 122) inside the switchboard 100. The air conditioning device 400 cools or warms the internal space of the switchboard 300 to cool or warm the power converter or the like inside the switchboard 300.

[0045] The numbers of the switchboard 100, the switchboard 300, the air conditioning device 200, and the air conditioning device 400 are not limited to those described above. The power storage facility 1 may include any number of switchboards 100, or may include a plurality of switchboards 300 without including the switchboard 100. The power storage facility 1 may include any number of switchboards 300, or may not include the switchboard 300. The same applies to the air conditioning devices 200 and 400.

[0046] [2 Description of the switchboards 100 and 300] Next, the configurations of the switchboards 100 and 300 will be described in detail. First, the configuration of the switchboard 100 will be described, and then, the configuration of the switchboard 300 will be described focusing on the parts different from the switchboard 100. FIG. 2 is a perspective view showing the configuration of the four switchboards 100 included in the power storage facility 1 according to the present embodiment. In FIG. 2, the front wall 113 is removed from the housing 110 of one switchboard 100 (the first switchboard 101), and the internal configuration and the like of the housing 110 are shown by solid lines and broken lines. Since all of the plurality of switchboards 100 included in the power storage facility 1 have the same configuration, hereinafter, mainly the configuration of one switchboard 100 will be described in detail.

[0047] [2.1 Description of the Electrical Panel 100] The electrical panel 100 is a device that can charge electricity from an external source and discharge electricity to the outside, and has a rectangular parallelepiped shape. The electrical panel 100 is a stationary power storage panel (battery storage panel) that stores various types of power, such as electricity from the commercial power grid, electricity generated by generators, wind power generation or solar power generation, and regenerative power from railway systems, and supplies power stably to external equipment. As described above, the electrical panel 100 is an outdoor-specification device that is installed outdoors (or can be installed outdoors), and has the dustproof and waterproof properties necessary for outdoor installation. Specifically, the electrical panel 100 has an IP code protection rating (IP code) defined by the IEC (International Electrotechnical Commission) standards, with dustproof ratings of IP2X, IP3X, IP4X, IP5X or IP6X, and waterproof ratings of IPX3, IPX4, IPX5, IPX6, IPX7 or IPX8.

[0048] As shown in Figure 2, the electrical panel 100 comprises a housing 110 and a plurality of energy storage devices 120 arranged inside the housing 110. In addition to these components, the electrical panel 100 also includes wires and the like for connecting the plurality of energy storage devices 120, but these are not shown in the illustration and their detailed explanation is omitted. In this embodiment, a plurality (six) of energy storage devices 120 arranged in the X-axis direction are arranged in multiple stages in the Z-axis direction inside the housing 110. The number of energy storage devices 120 arranged in the X-axis direction and the number of stages in the Z-axis direction are not particularly limited. The plurality of energy storage devices 120 may all be connected in series, a combination of series and parallel connections may be used, or all may be connected in parallel.

[0049] [2.1.1 Description of the Housing 110] The housing 110 is a rectangular parallelepiped (box-shaped) housing (shelf, rack). The housing 110 has a sealed structure. "Having a sealed structure" means that it has a degree of airtightness that provides dustproof and waterproof properties as described above, and small gaps are permitted. The housing 110 has an internal space that is divided into multiple levels, and multiple energy storage devices 120 are housed in the divided spaces. The housing 110 is made of metal such as stainless steel, aluminum, aluminum alloy, iron, or plated steel sheet. The housing 110 may be made of a material other than metal (such as resin), but it is preferable that it be made of a material with high strength, heat resistance and flame retardancy. The housing 110 includes side walls 111 and 112, a front wall 113, a rear wall 114, a bottom wall 115, a top wall 116, a first shelf 117, and a second shelf 118.

[0050] The side walls 111 and 112, the front wall 113, the rear wall 114, the bottom wall 115, and the top wall 116 are flat, rectangular wall portions that cover the entire surface of the six faces of the housing 110. Specifically, the side wall 111 is a wall of the housing 110 in the positive X-axis direction, and the side wall 112 is a wall of the housing 110 in the negative X-axis direction. The front wall 113 is a wall of the housing 110 in the negative Y-axis direction. The front wall 113 is a door (door member) that can open and close (open and close freely) the opening on the face (front) of the housing 110 in the negative Y-axis direction. The front wall 113 opens and closes in the Y-axis direction (depth direction, front and back direction of the housing 110). The rear wall 114 is a wall of the housing 110 in the positive Y-axis direction. The bottom wall 115 is a wall of the housing 110 in the negative Z-axis direction. The top wall 116 is a wall of the housing 110 in the positive Z-axis direction.

[0051] Through holes are formed in the side walls 111 and 112. As shown in Figure 2, of the four electrical panels 100, the electrical panel 100 located in the negative X-axis and negative Y-axis direction is also referred to as the first electrical panel 101, and the electrical panel 100 located in the positive X-axis and negative Y-axis direction is also referred to as the second electrical panel 102. The first electrical panel 101 and the second electrical panel 102 are adjacent in the X-axis direction. At least one of the first electrical panel 101 and the second electrical panel 102 houses at least one of the energy storage element 122 and the power converter. In this embodiment, both the first electrical panel 101 and the second electrical panel 102 house the energy storage element 122. In the housing 110 of the first electrical panel 101, a through hole 111a (hereinafter also referred to as the first through hole 111a) is formed in the side wall 111, and a through hole 112a is formed in the side wall 112. In the housing 110 of the second electrical panel 102, a through hole 112b (hereinafter also referred to as the second through hole 112b) is formed in the side wall 112 (the illustration of the through hole in the side wall 111 of the second electrical panel 102 is omitted). The through hole 112a of the first electrical panel 101 serves substantially the same purpose as the through hole 112b of the second electrical panel.

[0052] In this embodiment, the first through hole 111a is formed in the lower part of the side wall 111, and the second through hole 112b is formed in the lower part of the side wall 112. The lower part of the side wall 111 is the portion in the negative Z-axis direction from the center position of the side wall 111 in the Z-axis direction. Preferably, this lower part is the portion from the lower end edge of the side wall 111 to 1 / 3 of the total length of the side wall 111 in the Z-axis direction, more preferably up to 1 / 4, and even more preferably up to 1 / 5. The same applies to the lower part of the side wall 112.

[0053] The side wall 111 of the housing 110 of the first electrical panel 101 and the side wall 112 of the housing 110 of the second electrical panel 102 are positioned opposite each other. Therefore, the first through-hole 111a of the first electrical panel 101 and the second through-hole 112b of the second electrical panel 102 are positioned opposite each other. Through these first through-hole 111a and second through-hole 112b, a through-member 30, which is wiring or piping, passes through. The through-member 30 includes at least one of the following: main circuit wiring, signal lines, grounding lines, commercial AC wiring, control power lines, cooling piping, heating piping, and fire extinguishing piping. The main circuit wiring is the wiring through which the current (main current) that charges and discharges the energy storage device 120 flows. The signal lines are the wiring for sending various information (current, voltage, temperature, etc.) about the energy storage device 120 as signals. The grounding lines are the wiring for grounding the housing 110. The commercial AC wiring is the wiring through which AC current from the commercial power grid flows. Control power lines are wiring that supplies control power. Indoor-grade electrical wires or busbars can be used for these wires. Cooling pipes are pipes through which liquid or gaseous refrigerant flows. Heating pipes are pipes through which liquid or gaseous heat transfer fluid flows. Fire extinguishing pipes are pipes through which fire extinguishing agents flow. The penetration member 30 may be connected to equipment inside the electrical panel 100, or it may pass through the electrical panel 100 without being connected to equipment inside the electrical panel 100.

[0054] The pipe member 500 is a member that connects adjacent electrical panels 100. The first through-hole 111a of the first electrical panel 101 and the second through-hole 112b of the second electrical panel 102 are connected to the pipe member 500. The pipe member 500 also serves as a cover member that surrounds the through-hole member 30. The pipe member 500 connects the first through-hole 111a and the second through-hole 112b by having one end positioned inside the first through-hole 111a and the other end positioned inside the second through-hole 112b. Preferably, the sealing portion of the first through-hole 111a and the second through-hole 112b by the pipe member 500 (the first sealing member 610, the second sealing member 620, and the third sealing member 630, described later) has the same or better dustproof and waterproof properties as other parts of the electrical panel 100. In other words, it is preferable that the IP code of the seal portion is the same as or higher than the IP code of other parts of the electrical panel 100, according to the protection rating defined by the IEC standard. The seal portion has a dustproof rating of IP2X, IP3X, IP4X, IP5X, or IP6X, and a waterproof rating of IPX3, IPX4, IPX5, IPX6, IPX7, or IPX8. A detailed explanation of the pipe member 500 and its surrounding structure will be given later.

[0055] A vent (not shown) is formed on the upper wall 116 at a position opposite the air conditioning unit 200 for intake and exhaust of air by the air conditioning unit 200. Specifically, the air conditioning unit 200 is an air conditioner, and the interior of the air conditioning unit 200 is divided into an indoor unit space and an outdoor unit space. The vent communicates with the indoor unit space. Through this vent, the air conditioning unit 200, located above the upper wall 116, circulates the air in the internal space of the electrical panel 100. In other words, the air conditioned by the air conditioning unit 200 is exhausted into the internal space of the electrical panel 100, this air circulates within the internal space of the electrical panel 100, and is then drawn in by the air conditioning unit 200. Because the air inside the electrical panel 100 is conditioned by the air conditioning unit 200, the housing 110 has the sealed structure described above. The same applies to the electrical panel 300 and the air conditioning unit 400.

[0056] The first shelf 117 and the second shelf 118 are walls that partition the internal space of the housing 110. Each energy storage device 120 is arranged inside the housing 110 within the space partitioned by the first shelf 117 and the second shelf 118, supported by the first shelf 117 and the second shelf 118, etc. Multiple energy storage devices 120 are arranged in the X-axis direction on the first shelf 117, and multiple energy storage devices 120 are arranged in the X-axis direction on the second shelf 118. In this embodiment, the first shelf 117 and the second shelf 118 are flat and rectangular wall portions. The shape of the first shelf 117 and the second shelf 118 is not particularly limited, and they may be narrow plate-shaped or rod-shaped members such as beams.

[0057] In the negative Z-axis direction of the first shelf 117, a space is formed where no energy storage devices 120 are placed, and an electrical unit 40 (electrical components) and busbars 50 are placed. The main circuit wiring of the multiple energy storage devices 120 connected in series or in parallel is electrically connected to the main circuit wiring (through member 30) of the energy storage equipment 1 via the electrical unit 40. The electrical unit 40 controls all of the energy storage devices 120. The electrical unit 40 is positioned further back in the electrical panel 100 than the through member 30 (electric wires). Because the electrical unit 40 is positioned further back, it is easier to perform tasks such as installing the through member 30 (electric wires) on the front side of the electrical panel 100. The through member 30 (electric wires) is connected to the electrical unit 40 on the front side (negative Y-axis direction side), making the work on the front side easier. In this embodiment, the through member 30 (electric wires) is connected to the busbars 50. Electric wires from the electrical unit 40 (not shown) are connected to the busbars 50. The through member 30 (electric wire) and the electrical unit 40 are connected via a busbar 50. A detailed illustration of this connection is omitted.

[0058] [2.1.2 Description of the Energy Storage Device 120] Next, the configuration of the energy storage device 120 will be described in detail. Figure 3 is a perspective view showing the configuration of the energy storage device 120 provided in the electrical panel 100 according to this embodiment. In Figure 3, the casing 121 of the energy storage device 120 is viewed through, and the internal configuration of the casing 121 is shown with dashed lines.

[0059] As shown in Figure 3, the energy storage device 120 is a battery module (battery pack) that is elongated in the Y-axis direction and has a roughly rectangular parallelepiped shape. The energy storage device 120 comprises an outer casing 121, a plurality of energy storage elements 122, and a substrate unit 123. In this embodiment, the plurality of energy storage elements 122 are arranged in line in the Y-axis direction, but the direction of arrangement and the number of energy storage elements 122 are not particularly limited, and only one energy storage element 122 may be arranged. In addition to these components, the energy storage device 120 also includes busbars for connecting the terminals of the plurality of energy storage elements 122, but these are not shown in the illustration and their detailed explanation is also omitted. The energy storage device 120 may also include a pair of external terminals (positive and negative) for connecting to the outside, spacers arranged between the energy storage elements 122, restraining members (end plates, side plates, etc.) for restraining the energy storage elements 122, and a busbar frame for positioning the busbars, but these are not shown in the illustration or their explanation.

[0060] The outer casing 121 is a box-shaped (rectangular parallelepiped) container (module case) that is elongated in the Y-axis direction and constitutes the outer shell of the energy storage device 120. The outer casing 121 houses a plurality of energy storage elements 122 and fixes the plurality of energy storage elements 122 in predetermined positions, protecting them from impacts and the like. The outer casing 121 is made of an insulating material such as resin to prevent the energy storage elements 122 from coming into contact with external metal members or the like. The outer casing 121 may be made of a conductive material such as metal, as long as the insulating properties of the energy storage elements 122 are maintained.

[0061] The energy storage element 122 is a secondary battery (single cell) capable of charging and discharging electricity, and more specifically, a non-aqueous electrolyte secondary battery such as a lithium-ion secondary battery. In this embodiment, the energy storage element 122 has a flattened rectangular parallelepiped shape (square), but the shape of the energy storage element 122 is not limited to a rectangular parallelepiped shape, and may be a polygonal prism shape, cylindrical shape, oblong cylindrical shape, elliptical prism shape, etc. The energy storage element 122 may be a secondary battery other than a non-aqueous electrolyte secondary battery, or it may be a capacitor. The energy storage element 122 may be a primary battery. The energy storage element 122 may be a battery using a solid electrolyte. The energy storage element 122 may be a pouch-type energy storage element.

[0062] The circuit board unit 123 is a device capable of monitoring the state of the energy storage element 122, such as its charge and discharge states, and controlling the energy storage element 122. The circuit board unit 123 is equipped with electrical equipment such as a circuit board (CMU: Cell Monitoring Unit) inside. In this embodiment, the circuit board unit 123 is a flat rectangular member that is attached to the end of the outer casing 121 in the negative Y-axis direction and positioned at the end of the energy storage device 120 in the negative Y-axis direction.

[0063] [2.2 Description of the Electrical Panel 300] Next, the configuration of the electrical panel 300 will be described in detail. The electrical panel 300 is a stationary power conversion panel (PCS panel, power conditioner) equipped with a housing similar to the electrical panel 100, and with a power converter and copper bars (not shown) inside the housing.

[0064] The housing of the electrical panel 300, like the housing 110 of the electrical panel 100, has six flat, rectangular wall sections: two side walls, a front wall, a rear wall, a bottom wall, and a top wall. At the lower part of the two side walls of the housing of the electrical panel 300 that face the electrical panel 100, a through-hole (not shown) is formed, similar to the side walls 111 and 112 of the housing 110 of the electrical panel 100. The top wall of the housing of the electrical panel 300 has a vent (not shown) for intake and exhaust of air by the air conditioning unit 400, similar to the top wall 116 of the housing 110 of the electrical panel 100. Since the housing of the electrical panel 300 has the same configuration as the housing 110 of the electrical panel 100, a detailed explanation is omitted.

[0065] As appropriate, known power converters and copper bars can be used in the electrical panel 300. The power converter is electrically connected to the energy storage device 120 in the electrical panel 100 and converts power to or from the electrical panel 100. The power converter converts AC power to DC power (AC-DC conversion), DC power to AC power (DC-AC conversion), or converts voltage or frequency to different values ​​(DC-DC conversion, AC-AC conversion). In this embodiment, the power converter converts power to the electrical panel 100 from AC power to DC power, or converts DC power from the electrical panel 100 to AC power. The electrical panel 300 may be equipped with electrical equipment (electrical components) such as circuit breakers.

[0066] [3. Description of the pipe member 500 and its surrounding structure] Next, the pipe member 500 and its surrounding structure will be described in detail. Figure 4 is a perspective view showing the pipe member 500 and its surrounding structure with the first member 510 and the second member 520 of the pipe member 500 according to this embodiment separated. Figure 4 is an enlarged perspective view showing the state in which the first member 510 and the second member 520 of the pipe member 500 have been removed from the side wall 111 of the first electrical panel 101 and the side wall 112 of the second electrical panel 102. In Figure 4, the through member 30 is not shown. Figure 5 is a perspective view showing the pipe member 500 and its surrounding structure with the first member 510 and the second member 520 of the pipe member 500 according to this embodiment connected. In Figure 5, the side wall 111 of the first electrical panel 101 and the side wall 112 of the second electrical panel 102 are not shown. Figure 6 is a cross-sectional view showing the pipe member 500 and its surrounding structure with the first member 510 and the second member 520 of the pipe member 500 according to this embodiment connected. Figure 6 shows a cross-section when the first member 510 and the second member 520 of the pipe member 500 shown in Figure 4 are connected and cut by a plane passing through line A-A and parallel to the XZ plane. The through member 30 is not shown in Figure 6. Figures 7 and 8 are exploded perspective views showing each component of the pipe member 500 according to this embodiment. Figure 7 is a view of each component constituting the pipe member 500 from the same direction as in Figures 4 and 5, and Figure 8 is a view of Figure 7 from the opposite direction (rotated 180° around the Z axis).

[0067] [3.1 Description of the configuration of the first through-hole 111a and the second through-hole 112b and their surroundings] As shown in Figures 4 and 6, the first through-hole 111a is a rectangular through-hole that penetrates the side wall 111 of the housing 110 of the first electrical panel 101 in the X-axis direction when viewed from the X-axis direction. The second through-hole 112b is a rectangular through-hole that penetrates the side wall 112 of the housing 110 of the second electrical panel 102 in the X-axis direction when viewed from the X-axis direction. The first through-hole 111a is long in a predetermined direction (in this embodiment, the Y-axis direction). The first through-hole 111a is short in a predetermined direction (in this embodiment, the Z-axis direction). In other words, the first through-hole 111a is a flattened through-hole when viewed from the X-axis direction. The second through-hole 112b is long in the Y-axis direction and short in the Z-axis direction. In other words, the second through-hole 112b is a flattened through-hole when viewed from the X-axis direction. The shapes of the first through-hole 111a and the second through-hole 112b are not limited to a rectangular shape when viewed from the X-axis direction, and may be any shape other than a rectangle, such as a polygon, ellipse, oblong, or circular shape. The first through-hole 111a may refer to a notch (recess) created by cutting out (recessing) the edge of the side wall 111 in the Y-axis minus direction toward the Y-axis plus direction. The same applies to the second through-hole 112b.

[0068] In this embodiment, the first through-hole 111a and the second through-hole 112b are through-holes of the same shape and size. The first through-hole 111a and the second through-hole 112b are positioned opposite each other in the X-axis direction. In other words, the first through-hole 111a and the second through-hole 112b are positioned so that at least a portion of them overlap when viewed from the X-axis direction. In this embodiment, the first through-hole 111a and the second through-hole 112b are positioned at the same location when viewed from the X-axis direction. In this embodiment, since the side wall 111 of the first electrical panel 101 and the side wall 112 of the second electrical panel 102 are spaced apart in the X-axis direction, the first through-hole 111a and the second through-hole 112b are spaced apart from each other in the X-axis direction.

[0069] In the side wall 111 of the first electrical panel 101, a plurality of projections 111b are provided around the first through-hole 111a in an annular arrangement that surrounds the first through-hole 111a. The projections 111b are cylindrical projections (bosses) that protrude from the inner surface (the surface in the negative X-axis direction) of the side wall 111 in the negative X-axis direction and extend in the negative X-axis direction. At the location (base) of the projection 111b in the side wall 111, there is no gap (hole) that connects the inner surface and the outer surface of the side wall 111. In this embodiment, three projections 111b are provided in the positive Z-axis direction of the first through-hole 111a, arranged in the Y-axis direction, and three projections 111b are provided in the negative Z-axis direction of the first through-hole 111a, arranged in the Y-axis direction. At the tip of the projection 111b (the end in the negative X-axis direction), a male threaded portion is formed to which a limiting member 710 (see Figure 6; in this embodiment, a cap nut with a flange) is attached. The projection 111b can also be described as a first positioning member that positions the limiting member 710.

[0070] In the side wall 112 of the second electrical panel 102, a plurality of projections 112c are provided around the second through-hole 112b in an annular arrangement that surrounds the second through-hole 112b. The projections 112c are cylindrical projections (bosses) that protrude from the inner surface (the surface in the positive X-axis direction) of the side wall 112 in the positive X-axis direction and extend in the positive X-axis direction. No gap (hole) is formed at the location (base) of the projection 112c in the side wall 112 that connects the inner surface and the outer surface of the side wall 112. In this embodiment, three projections 112c are provided in the positive Z-axis direction of the second through-hole 112b, arranged in the Y-axis direction, and three projections 112c are provided in the negative Z-axis direction of the second through-hole 112b, arranged in the Y-axis direction. At the tip of the projection 112c (the end in the positive X-axis direction), a male threaded portion is formed to which a limiting member 720 (see Figure 6; in this embodiment, a flanged cap nut) is attached. The projection 112c can also be described as a second positioning member that positions the limiting member 720.

[0071] [3.2 Description of the pipe member 500] In this configuration, the energy storage equipment 1 is provided with a pipe member 500 that connects the first through-hole 111a of the first electrical panel 101 and the second through-hole 112b of the second electrical panel 102. The pipe member 500 is a hollow tubular member. The pipe member 500 has openings at both ends, and these openings are connected to the hollow portion. As shown in Figures 4 to 8, the pipe member 500 comprises a first member 510, a second member 520, a third member 530, a first sealing member 610, a second sealing member 620, and a third sealing member 630. The first member 510, the second member 520, and the third member 530 are formed from any metal material that can be used for the housing 110. In this embodiment, the first member 510 is manufactured by metal drawing or the like. The first member 510, the second member 520, and the third member 530 may be formed from resin material or the like, but from the viewpoint of durability and the like, it is preferable that they be formed from metal material.

[0072] [3.2.1 Description of the First Member 510] The first member 510 is partially located inside the first electrical panel 101, and the other part extends outside the first electrical panel 101. The first member 510 comprises a first connecting portion 511 and a cylindrical portion 512. The first connecting portion 511 is a plate-shaped, rectangular annular portion parallel to the YZ plane, located inside the first electrical panel 101, and connected to the first electrical panel 101. The annular portion of the first connecting portion 511 is formed continuously, and the ring is not interrupted. Being connected to the first electrical panel 101 means being in direct or indirect contact with the first electrical panel 101, and is not limited to being fixed to the first electrical panel 101. In this embodiment, the first connecting portion 511 is connected to the side wall 111 of the first electrical panel 101 by contacting the side wall 111 of the first electrical panel 101 via the first sealing member 610, with the first sealing member 610 sandwiched between the first sealing member 610 and the side wall 111 of the first electrical panel 101 (see Figure 6).

[0073] The first connection portion 511 has a plurality of (six) holes 511a formed at positions corresponding to the plurality of (six) protrusions 111b provided on the side wall 111 of the first electrical panel 101, into which the plurality of (six) protrusions 111b are inserted. In this embodiment, the holes 511a are rectangular through holes that are elongated in the Y-axis direction, and by providing a gap between the holes and the protrusions 111b in the Y-axis direction and the Z-axis direction, the configuration is such that construction errors and tolerances when the protrusions 111b are inserted can be absorbed.

[0074] The cylindrical portion 512 extends from the first connecting portion 511 in the positive X-axis direction and has a rectangular cylindrical shape in its YZ cross-section. In this embodiment, the cylindrical portion 512 is not perfectly rectangular when viewed from the X-axis direction and is not angular. As a result, the first member 510 has rectangular through-holes, or openings 513, at both ends in the X-axis direction. Of the openings 513, the opening at the X-axis negative end of the first member 510 is called the first end opening 513a, and the opening at the X-axis positive end of the first member 510 is called the second end opening 513b. In this embodiment, the second end opening 513b is smaller in size than the first end opening 513a. The first end opening 513a is the X-axis negative opening of the pipe member 500.

[0075] The cylindrical portion 512 penetrates the first through-hole 111a of the first electrical panel 101 and the second through-hole 112b of the second electrical panel 102 (see Figure 6). The cylindrical portion 512 has a shape that is elongated in the Y-axis direction, corresponding to the shapes of the first through-hole 111a and the second through-hole 112b, but is formed to be smaller than the first through-hole 111a and the second through-hole 112b. This configuration allows for the absorption of construction errors and tolerances when the cylindrical portion 512 is inserted into the first through-hole 111a and the second through-hole 112b. Depending on the shape of the first through-hole 111a and the second through-hole 112b, the cylindrical portion 512 may be appropriately changed to a cylindrical shape other than a rectangle, such as a polygon, ellipse, oblong, or circular shape. It can also be said that the pipe member 500 includes the cylindrical portion 512.

[0076] The cylindrical portion 512 is connected to the second member 520, which will be described later. Specifically, the cylindrical portion 512 is connected to the second connecting portion 521 of the second member 520. Being connected to the second connecting portion 521 means being in direct or indirect contact with the second connecting portion 521, and is not limited to being directly fixed to the second connecting portion 521. In this embodiment, the cylindrical portion 512 is connected (fixed) to the second connecting portion 521 by contacting the second connecting portion 521 via the third sealing member 630, with the third sealing member 630 sandwiched between the cylindrical portion 512 and the second connecting portion 521 (see Figure 6). The third connecting portion 514 at the end of the cylindrical portion 512 in the X-axis positive direction is provided with a plurality (six) of fixing portions 512a arranged in an annular pattern for fixing the cylindrical portion 512 and the second connecting portion 521 (see Figures 6 and 8).

[0077] The third connecting portion 514 is an annular wall of the first member 510 (cylindrical portion 512) in which the second end opening 513b is formed, and is connected to the second member 520 (second connecting portion 521). In other words, the first member 510 is equipped with the third connecting portion 514, and the third sealing member 630 is positioned between the third connecting portion 514 and the second member 520. Specifically, the third sealing member 630 is positioned between the X-axis positive surface 514a of the third connecting portion 514 (see Figures 8 and 9) and the second connecting portion 521. In this embodiment, the fixing portion 512a is a nut with a female threaded portion into which the male threaded portion of the fixing member 730 (see Figures 6 and 12, a bolt in this embodiment) is inserted (screwed in) and fixed. The fixing portion 512a is integrated with the cylindrical portion 512 (integrally formed by press-fitting or welding, etc.). As a result, the fixing portion 512a protrudes in the X-axis direction by a predetermined dimension (length A in Figure 11) from the X-axis positive surface 514a of the third connecting portion 514 of the cylindrical portion 512.

[0078] [3.2.2 Description of the second member 520] The second member 520 comprises a second connecting portion 521 and an edge protector 522. The second connecting portion 521 is a plate-shaped, rectangular annular portion parallel to the YZ plane, and is located inside the second electrical panel 102 and connected to the second electrical panel 102. The entire second member 520 is located inside the second electrical panel 102. (The entire second connecting portion 521 is located inside the second electrical panel 102.) The annular portion of the second connecting portion 521 is formed continuously, and the ring is not interrupted. Part of the second member 520 may be located inside the second electrical panel 102, and other parts may be located outside the second electrical panel 102. Being connected to the second electrical panel 102 means being in direct or indirect contact with the second electrical panel 102, and is not limited to being directly fixed to the second electrical panel 102. In this embodiment, the second connection portion 521 is connected to the side wall 112 of the second electrical panel 102 by contacting the side wall 112 of the second electrical panel 102 via the second sealing member 620, with the second sealing member 620 sandwiched between the second sealing member 620 and the side wall 112 of the second electrical panel 102 (see Figure 6).

[0079] The second connection portion 521 has a plurality of (six) holes 521a formed at positions corresponding to the plurality of (six) protrusions 112c provided on the side wall 112 of the second electrical panel 102, into which the plurality of (six) protrusions 112c are inserted. In this embodiment, the holes 521a are rectangular through holes that are elongated in the Y-axis direction, and by providing a gap between the holes and the protrusions 112c in the Y-axis direction and the Z-axis direction, the configuration is such that construction errors and tolerances when the protrusions 112c are inserted can be absorbed.

[0080] A roughly rectangular opening (through hole) that is elongated in the Y-axis direction is formed in the central part of the second connection portion 521, and a plurality of edge protectors 522 are arranged along this opening. The edge protectors 522 are members made of rubber or the like that protect the edges of the opening. The same applies to the other edge protectors. As a result, an opening 523, which is a roughly rectangular through hole when viewed from the X-axis direction, is formed in the second member 520. The opening 523 is an opening in the X-axis positive direction of the pipe member 500. Any known material can be used as the edge protector 522 as appropriate.

[0081] Around the opening 523 in the second connection portion 521, a plurality (six) of circular holes 521b are formed in an annular arrangement surrounding the opening 523. The plurality (six) of holes 521b are positioned to correspond to the plurality (six) of fixing portions 512a provided on the cylindrical portion 512. The fixing member 730 is inserted into the holes 521b, and the fixing member 730 is fixed to the fixing portion 512a of the cylindrical portion 512, thereby fixing the cylindrical portion 512 and the second connection portion 521 (see Figures 6 and 12). Furthermore, protruding pieces 521c and 521d are provided around the opening 523 in the second connection portion 521, with a screw hole 521e formed in the protruding piece 521c and a screw hole 521f formed in the protruding piece 521d (see Figure 8). The protruding piece 521c is positioned to correspond to the third member 534, and the third member 534 is fixed to it. The protruding piece 521d is positioned to correspond to the third member 535, and the third member 535 is fixed to it.

[0082] Thus, the first connecting portion 511 and the second connecting portion 521 are flange portions formed along the YZ plane at both ends of the pipe member 500 in the X-axis direction, and the cylindrical portion 512 is a cylindrical part that connects the first connecting portion 511 and the second connecting portion 521. In other words, the cylindrical portion 512 is a cylindrical part that does not include the flange portion, and the pipe member 500 is referred to as the part including the cylindrical portion 512 and the flange portion.

[0083] [3.2.3 Description of the Third Member 530] The third member 530 is a member that narrows the opening 513 (first end opening 513a) and opening 523 of the pipe member 500. The third member 530 comprises third members 531 to 535. The third members 531 to 533 are members that narrow the opening 513 (first end opening 513a) of the first member 510 of the pipe member 500. The third member 531 is a plate-shaped and rectangular annular member parallel to the YZ plane and is connected (fixed) to the first member 510 (first connecting part 511). A substantially rectangular opening (through hole) that is long in the Y-axis direction is formed in the central part of the third member 531, and a plurality of edge protectors 531a are arranged along this opening. As the edge protectors 531a, any known type can be used as appropriate. As a result, an opening 531b, which is a substantially rectangular through hole when viewed from the X-axis direction, is formed in the third member 531. The opening 531b is also the opening of the pipe member 500.

[0084] Furthermore, protruding pieces 531c and 531d are provided around the opening 531b of the third member 531, with a screw hole 531e formed in the protruding piece 531c and a screw hole 531f formed in the protruding piece 531d (see Figure 7). The protruding piece 531c is positioned to correspond to the third member 532, and the third member 532 is fixed to it. The protruding piece 531d is positioned to correspond to the third member 533, and the third member 533 is fixed to it. A protruding piece 531g is provided on the outer circumference of the third member 531, and a hole 531h is formed in the protruding piece 531g (see Figure 7). The protruding piece 531g is fixed to the first connecting portion 511 of the first member 510.

[0085] The third members 532 and 533 are members that narrow the opening 531b formed in the third member 531. The third members 532 and 533 also have the function of physically separating the members from each other. In this embodiment, the third members 532 and 533 are plate-shaped members parallel to the YZ plane that partition the opening 531b in the Y-axis direction, and are connected (fixed) to the third member 531.

[0086] The third members 534 and 535 are members that narrow the opening 523 of the second member 520 of the pipe member 500. The third members 534 and 535 also have the function of physically separating the members from each other. In this embodiment, the third members 534 and 535 are plate-shaped members parallel to the YZ plane that partition the opening 523 in the Y-axis direction, and are connected (fixed) to the second member 520 (second connection part 521).

[0087] In this way, the opening 513 (first end opening 513a) of the first member 510 of the pipe member 500 is narrowed to opening 531b by the third member 531, and the opening 531b of the third member 531 is further narrowed by the third members 532 and 533. The opening 523 of the second member 520 of the pipe member 500 is narrowed by the third members 534 and 535. As a result, as shown in Figure 5, various through members 30 (through members 31 to 34) of different sizes (diameters) are inserted into the narrowed opening of the pipe member 500. Through members 31 and 32 are large members such as main circuit wiring, cooling pipes, heating pipes, and fire extinguishing pipes, while through members 33 and 34 are small members such as signal lines and grounding lines. In this embodiment, the through member 32 is the main circuit positive wire, the through member 31 is the main circuit negative wire, the through member 33 is the commercial AC current wire, and the through member 34 is the ground wire. The third member 530 (531-535) functions as a fire compartment cover. A fire compartment cover is a cover that reduces the opening area of ​​the opening in order to prevent the fire from spreading outside the electrical panel 100 in the event of a fire occurring inside the electrical panel 100.

[0088] The shape and size of the third members 530 (531-535) may be appropriately changed according to the size and number of through members 30. The opening 531b is not a through hole penetrating the third member 531, but a notch (recess) formed by cutting out (recessing) the edge of the third member 531 in the Y-axis or Z-axis direction may also be referred to as the opening 531b. Any two or all three of the third members 531-533 may be integrated, or the third members 534 and 535 may be integrated. In addition to the above configuration, or in place of the above configuration, the third member 530 may be provided with a sealing material such as fire-resistant putty to fill the opening 513 (first end opening 513a) and opening 523 of the pipe member 500.

[0089] Of the third members 530 (531-535), third members 532, 533, 534, and 535 are also referred to as fourth members. In other words, third members 530 (531-535) include fourth members 532, 533, 534, and 535. Third members 530 (531-535) are members that narrow the opening of the pipe member 500 (second member 520 also has the function of narrowing the opening). Fourth members 532, 533, 534, and 535 are members that further narrow the opening of the pipe member 500. Specifically, fourth members 532 and 533 are members that narrow the opening of the third member 531, and fourth members 534 and 535 are members that narrow the opening of the second member 520. Fourth members 532, 533, 534, and 535 also have the function of physically separating the through members 30 from each other. When adjacent through members 30 are electric wires, the allowable current of the electric wires may need to be adjusted not only by the allowable current (maximum allowable current) due to the structure of the electric wires, but also by the electric wire laying conditions such as the distance between adjacent electric wires. For this reason, the distance between adjacent electric wires can be optimized by adjusting the dimensions in the Y-axis direction of, for example, the fourth members 532 and 534, so that the amount of adjustment for the allowable current is as small as possible. When multiple adjacent through members 30 are main circuit electric wires and control electric wires, the main circuit electric wires and control electric wires can be separated, for example, to reduce noise.

[0090] In this embodiment, openings 513 (first end opening 513a and second end opening 513b) are provided at both ends of the first member 510 of the pipe member 500. The pipe member 500 includes a third member 530 (531-535) and a second member 520 that narrow the openings 513. Each time the third member 530 and the second member 520 are added, the shape and number of openings 513 change. Starting from the original opening 513, they can be called the first opening (original opening), the (narrowed) second opening, and the (further narrowed) third opening. This is true for both the first end opening 513a and the second end opening 513b. In this embodiment, when the pipe member 500 is assembled, there are three openings on each side of both ends of the pipe member 500 in the X-axis direction.

[0091] [3.2.4 Description of the sealing member] The first sealing member 610 is a gasket (packing) that is placed between the first connection portion 511 of the first member 510 and the first electrical panel 101. The first connection portion 511 faces the side wall 111 in the X-axis direction. The first sealing member 610 is placed in a compressed state between the first connection portion 511 and the side wall 111 of the first electrical panel 101, sealing the space between the first connection portion 511 and the side wall 111. The first sealing member 610 is a rectangular ring-shaped member that is long in the Y-axis direction when viewed from the X-axis direction, and is placed so as to surround the periphery of the cylindrical portion 512 of the first member 510. The annular portion of the first sealing member 610 is formed continuously, and the ring is not interrupted. The first sealing member 610 is placed around the first through hole 111a of the first electrical panel 101 when the pipe member 500 is attached to the first electrical panel 101 and the second electrical panel 102. The material of the first sealing member 610 can be any appropriately known material that can be used as a gasket (packing), such as resin, rubber, or sponge, and it is preferable that it be made of a material with high heat resistance and flame retardancy.

[0092] The second sealing member 620 is a gasket (packing) positioned between the second connection portion 521 of the second member 520 and the second electrical panel 102. The second connection portion 521 faces the side wall 112 in the X-axis direction. The second sealing member 620 is positioned in a compressed state between the second connection portion 521 and the side wall 112 of the second electrical panel 102, sealing the space between the second connection portion 521 and the side wall 112. The second sealing member 620 is a rectangular annular member, viewed from the X-axis direction, that is elongated in the Y-axis direction and is positioned along the shape of the second connection portion 521. The annular portion of the second sealing member 620 is formed continuously, and the ring is not interrupted. The second sealing member 620 is larger in size than the cylindrical portion 512 of the first member 510, viewed from the X-axis direction, and is positioned around the cylindrical portion 512 (see Figure 6). The second sealing member 620 is positioned around the second through-hole 112b of the second electrical panel 102 when the pipe member 500 is attached to the first electrical panel 101 and the second electrical panel 102. The material of the second sealing member 620 can be any material that can be used for the first sealing member 610. In this embodiment, the same material as the first sealing member 610 is used for the second sealing member 620.

[0093] The third sealing member 630 is a gasket (packing) positioned between the first member 510 and the second member 520. The second connecting portion has a plate surface that faces the end face of the cylindrical portion 512 in the X-axis direction in the X-axis direction. The third sealing member 630 is positioned in a compressed state between the cylindrical portion 512 of the first member 510 and the second connecting portion 521 of the second member 520, sealing the space between the cylindrical portion 512 and the second connecting portion 521. The third sealing member 630 is positioned along the shape of the end of the cylindrical portion 512 in the positive X-axis direction, and is a rectangular annular member that is long in the Y-axis direction when viewed from the X-axis direction. The annular portion of the third sealing member 630 is formed continuously, and the ring is not interrupted. When viewed from the X-axis direction, the third sealing member 630 is smaller in size than the second sealing member 620 and is positioned within the opening of the second sealing member 620. As for the material of the third sealing member 630, any material that can be used for the first sealing member 610 can be used.

[0094] [3.3 Explanation of the configuration in which the pipe member 500 connects the first through hole 111a and the second through hole 112b] Next, the configuration in which the pipe member 500 connects the first through hole 111a and the second through hole 112b (which can also be called the method of connecting or manufacturing the pipe member 500, or the method of manufacturing the energy storage equipment 1) will be explained in detail. Figure 9 is a cross-sectional view showing the configuration of the pipe member 500 and its surroundings with the first member 510 and the second member 520 of the pipe member 500 according to this embodiment separated. Figure 9 shows a cross-section of the configuration shown in Figure 4 when cut by a plane passing through the line A-A and parallel to the XZ plane. Figure 10 is a cross-sectional view showing the configuration of the pipe member 500 and its surroundings before the first member 510 and the second member 520 of the pipe member 500 according to this embodiment compress the first seal member 610 and the second seal member 620. Figure 11 is a cross-sectional view showing the structure of the pipe member 500 and its surroundings after the first member 510 and the second member 520 of the pipe member 500 according to this embodiment have compressed the first sealing member 610 and the second sealing member 620. Figure 12 is a cross-sectional view showing the structure of the pipe member 500 and its surroundings with the first member 510 and the second member 520 of the pipe member 500 according to this embodiment connected. Figures 10 to 12 are diagrams corresponding to Figure 9, showing the members shown in Figure 9 moved in the X-axis direction. In Figures 9 to 12, the through member 30, the third member 530, and the edge protectors 522 and 531a are not shown.

[0095] First, as shown in Figure 9, the first member 510 of the pipe member 500 is placed inside the housing 110 of the first electrical panel 101. The second member 520 of the pipe member 500 is placed inside the housing 110 of the second electrical panel 102. Specifically, the first member 510 is placed in the negative X-axis direction of the first through-hole 111a of the side wall 111 of the housing 110 of the first electrical panel 101. The second member 520 is placed in the positive X-axis direction of the second through-hole 112b of the side wall 112 of the housing 110 of the second electrical panel 102. In this embodiment, the first sealing member 610 is attached to the first member 510, but it may also be attached to the negative X-axis direction surface of the side wall 111 of the first electrical panel 101. The third sealing member 630 is attached to the first member 510, but it may also be attached to the negative X-axis direction surface of the second member 520. The second sealing member 620 is attached to the second member 520, but it may also be attached to the side wall 112 of the second electrical panel 102 on the surface in the positive X-axis direction.

[0096] Next, as shown in Figure 10, the cylindrical portion 512 of the first member 510 is passed through the first through-hole 111a of the first electrical panel 101. Furthermore, the projection 111b of the side wall 111 of the first electrical panel 101 is inserted into the hole 511a of the first connecting portion 511 of the first member 510, causing the tip of the projection 111b to protrude from the first connecting portion 511. Since the tip of the projection 111b has a male threaded portion to which the limiting member 710 (cap nut) is attached, the male threaded portion protrudes from the first connecting portion 511. The projection 112c of the side wall 112 of the second electrical panel 102 is inserted into the hole 521a of the second connecting portion 521 of the second member 520, causing the tip of the projection 112c to protrude from the second connecting portion 521. Since a male threaded portion is formed at the tip of the projection 112c to which a limiting member 720 (cap nut) is attached, the male threaded portion protrudes from the second connection portion 521. At this time, the first sealing member 610 contacts the side wall 111 of the first electrical panel 101. In other words, the first connection portion 511 contacts the side wall 111 via the first sealing member 610, with the first sealing member 610 sandwiched between the first connection portion 511 and the side wall 111. The first connection portion 511 covers the entire perimeter of the first through hole 111a from the inside of the first electrical panel 101. The second sealing member 620 contacts the side wall 112 of the second electrical panel 102. In other words, the second connection portion 521 contacts the side wall 112 via the second sealing member 620, with the second sealing member 620 sandwiched between the second connection portion 521 and the side wall 112. The second connection portion 521 covers the entire perimeter of the second through hole 112b from the inside of the second electrical panel 102.

[0097] Next, as shown in Figure 11, the male threaded portion of the tip of the projection 111b is inserted into the female threaded portion of the limiting member 710 (cap nut) (by placing the cap nut over the male threaded portion and rotating it), thereby attaching the limiting member 710 to the projection 111b. The limiting member 710 is a member that restricts the movement of the first connecting portion 511 (first member 510) in the negative X-axis direction, or compresses the first sealing member 610. The projection 111b is inserted into the limiting member 710 until its tip contacts the bottom of the cap portion of the limiting member 710 (cap nut). The male threaded portion of the tip of the projection 112c is inserted into the female threaded portion of the limiting member 720 (cap nut) (by placing the cap nut over the male threaded portion and rotating it), thereby attaching the limiting member 720 to the projection 112c. The limiting member 720 is a member that restricts the movement of the second connecting portion 521 (second member 520) in the positive X-axis direction, or compresses the second sealing member 620. The projection 112c is inserted into the limiting member 720 (cap nut) until its tip contacts the bottom of the cap portion of the limiting member 720.

[0098] In this case, the first connection portion 511 compresses the first sealing member 610 in the X-axis direction with the side wall 111 of the first electrical panel 101. The amount of screw tightening by the limiting member 710 (cap nut) is set so that this compression results in the minimum amount of compression required to achieve a waterproof effect (the length of the female thread to the bottom of the cap nut and the plate thickness of the first connection portion 511 are also taken into consideration). The second connection portion 521 compresses the second sealing member 620 in the X-axis direction with the side wall 112 of the second electrical panel 102. The amount of screw tightening by the limiting member 720 (cap nut) is set so that this compression results in the minimum amount of compression required to achieve a waterproof effect (the length of the female thread to the bottom of the cap nut and the plate thickness of the second connection portion 521 are also taken into consideration). The cylindrical portion 512 passes through the second through hole 112b of the second electrical panel 102.

[0099] Next, as shown in Figure 12, the cylindrical portion 512 is connected to the second connecting portion 521. With the third sealing member 630 sandwiched between the cylindrical portion 512 and the second connecting portion 521, the cylindrical portion 512 is brought into contact with the second connecting portion 521 via the third sealing member 630, and connected (fixed) to the second connecting portion 521. Specifically, the fixing member 730 is inserted into the hole 521b of the second connecting portion 521, and the male threaded portion of the fixing member 730 (bolt) is inserted into the female threaded portion of the fixing portion 512a (nut) of the cylindrical portion 512 (screwed in), thereby fixing the fixing member 730 to the fixing portion 512a. In this embodiment, the fixing member 730 is inserted into the fixing portion 512a until the second connecting portion 521 contacts the fixing portion 512a. At this time, the cylindrical portion 512 and the second connecting portion 521 compress the third sealing member 630 in the X-axis direction.

[0100] Specifically, as shown in Figure 11, the fixing portion 512a protrudes a predetermined length (length A) in the X-axis direction from the surface 514a (tip surface) of the third connecting portion 514 at the X-axis positive end of the cylindrical portion 512. As shown in Figure 12, the third sealing member 630 is compressed until it reaches a predetermined thickness (length A). This compression compresses the third sealing member 630 by a sufficient amount (a sufficiently large amount of compression compared to the minimum required amount) to provide a waterproofing effect. At this time, the first connecting portion 511 and the second connecting portion 521 are pulled towards each other in the X-axis direction, and as a result, the first sealing member 610 and the second sealing member 620 are also compressed.

[0101] In other words, the first connection portion 511 further compresses the first sealing member 610 in the X-axis direction with the side wall 111 of the first electrical panel 101. This compression compresses the first sealing member 610 by a sufficient amount (a sufficiently large amount of compression compared to the minimum required amount) to provide a waterproofing effect. As a result, the first connection portion 511 separates from the limiting member 710. The second connection portion 521 further compresses the second sealing member 620 in the X-axis direction with the side wall 112 of the second electrical panel 102. This compression compresses the second sealing member 620 by a sufficient amount (a sufficiently large amount of compression compared to the minimum required amount) to provide a waterproofing effect. As a result, the second connection portion 521 separates from the limiting member 720. The compression amounts of the first sealing member 610 and the second sealing member 620 are not individually adjusted. In this embodiment, the first sealing member 610 and the second sealing member 620 are made of the same material and are of approximately the same size (same thickness), so ultimately they have approximately the same thickness (compression amount).

[0102] The first sealing member 610, the second sealing member 620, and the third sealing member 630 are configured to ensure sealing performance by being compressed by approximately 30% in the X-axis direction, but their thickness in the X-axis direction is made large to absorb errors (tolerances) of up to ±5 mm. Depending on the dimensions of the first sealing member 610, the second sealing member 620, and the third sealing member 630, such as the thickness in the X-axis direction, the first connecting portion 511 does not need to be spaced apart from the limiting member 710, and the second connecting portion 521 does not need to be spaced apart from the limiting member 720. By making the distance between the first connecting portion 511 and the limiting member 710, and the distance between the second connecting portion 521 and the limiting member 720 variable, the configuration can absorb construction errors and tolerances when connecting the first member 510 and the second member 520.

[0103] With the above configuration, the pipe member 500 connects the first through-hole 111a of the first electrical panel 101 and the second through-hole 112b of the second electrical panel 102. The first connection portion 511 of the first member 510 is located inside the first electrical panel 101. The first connection portion 511 is connected to the side wall 111 of the first electrical panel 101 by contacting the side wall 111 via the first seal member 610 while the first seal member 610 is compressed between the first connection portion 511 and the side wall 111 of the first electrical panel 101. The second connection portion 521 of the second member 520 is located inside the second electrical panel 102. The second connection portion 521 is connected to the side wall 112 of the second electrical panel 102 by contacting the side wall 112 via the second seal member 620 while the second seal member 620 is compressed between the second connection portion 521 and the side wall 112 of the second electrical panel 102.

[0104] The third members 531 to 533 (and edge protector 531a) may be connected (fixed) to the first connection portion 511 of the first member 510 before the process shown in Figure 9, or after the process shown in Figure 12, or between the process shown in Figure 9 and the process shown in Figure 12. The third members 534 and 535 (and edge protector 522) may be connected (fixed) to the second connection portion 521 of the second member 520 before the process shown in Figure 9, or after the process shown in Figure 12, or between the process shown in Figure 9 and the process shown in Figure 12.

[0105] When a through-hole is provided in the housing 110 of the electrical panel 100 that houses the energy storage element 122 or the power converter, it is desirable that the size of the through-hole be as close as possible to the minimum required size from the standpoint of fire prevention or fire spread prevention. It is possible to form a through-hole that is relatively large compared to the minimum required size and then fill unnecessary parts with putty later, but in that case, a large amount of putty will be required, which will contribute to increased manufacturing costs. If there are many areas filled with putty, there is a risk that gaps will form in the areas filled with putty, allowing the outside and inside of the housing 110 of the electrical panel 100 to communicate. If gaps form, maintenance for repair will be required. Therefore, it is preferable that the size of the opening be as close as possible to the minimum required size.

[0106] In this embodiment, projections 111b and 112c are provided around the through-holes (first through-hole 111a and second through-hole 112b) of the electrical panel 100 for the arrangement of the pipe member 500. If the through-holes become larger, the area where the projections 111b and 112c are placed also expands. In this case, the risk of interference between the housing components inside the electrical panel 100 and the projections 111b and 112c increases. Therefore, it is preferable to make the through-holes close to the minimum size to suppress the expansion of the area where the projections 111b and 112c are placed.

[0107] In this embodiment, the dimensions in the Z-axis direction of the through-holes (first through-hole 111a and second through-hole 112b) through which the through-member 30 passes correspond to the dimensions in the Z-axis direction of the through-member 30. Specifically, the required dimensions in the Z-axis direction of the opening 523 of the second member 520 only need to be such that the through-member 30 can pass through. In practice, to allow for some clearance, the dimensions in the Z-axis direction of the opening 523 should be slightly larger than the dimensions of the through-member 30. The outer dimensions in the Z-axis direction of the cylindrical portion 512 of the first member 510 should also be the minimum required dimensions. This minimum dimension is the sum of the Z-axis opening dimension of the tip of the cylindrical portion 512 of the second member 520 in the Z-axis direction (the Z-axis dimension of the second end opening 513b) and the Z-axis dimension of the third seal member 630 (excluding the empty space). This should also be slightly larger than the minimum dimension, taking into account the attachment area of ​​the third seal member 630.

[0108] As described above, when the opening is brought as close to the minimum size as possible, there may be cases where it is not possible to secure a location for forming screw holes when fastening the fourth members 534 and 535 with screws. The screw holes need to be located inside the ring of the third sealing member 630 (and inside the ring of the second sealing member 620) when viewed from the X-axis direction. For this reason, the second member 520 is provided with protruding pieces 521c and 521d, and screw holes 521e and 521f are provided in the protruding pieces 521c and 521d (see Figure 8). The protruding pieces 521c and 521d can also be used as positioning members when positioning the through member 30. Although there is also a method of fixing the fourth members 534 and 535 by welding, adhesive, etc., without providing the protruding pieces 521c and 521d and screw holes 521e and 521f, screw fastening is preferable when considering the ease of positioning and replacing the through member 30. One could also consider increasing the Z-axis dimension of the fourth members 534 and 535 and screwing the second member 520 to the fourth members 534 and 535 on the outside of the ring of the second sealing member 620, but in this case, the shape of the fourth members 534 and 535 would become larger, which could increase costs. The fixing of the fourth members 532 and 533 to the third member 531 is based on a similar idea, and protruding pieces 531c and 531d are provided on the third member 531 (see Figure 7).

[0109] The size of the through-hole in the Y-axis direction should be the sum of the dimensions of the through-member 30 in the Y-axis direction as the minimum dimension. This dimension should then be adjusted by adding the clearance between the through-member 30 and the edge of the opening, or the distance required for the performance of the energy storage device 120 (such as the separation distance between the two wires).

[0110] In this embodiment, the fastening locations of the screws (bolts) in the pipe member 500 do not extend from the internal space to the external space at each fastening location. The internal space is the space inside the electrical panel 100 or the space inside the pipe member 500 (the space labeled "IN" in Figure 12). The external space is the space outside the electrical panel 100 and outside the pipe member 500 (the space labeled "OUT" in Figure 12). In this embodiment, all fastening locations are located in the internal space. Therefore, the screw fastening locations do not affect the sealed structure (waterproof structure) of the electrical panel 100. There is also the advantage that work can be done from the inside of the electrical panel 100. At one fastening location, fastening may be done in the external space as long as it does not extend from the internal space to the external space (see Figure 16).

[0111] [4. Explanation of Effects] As described above, according to the energy storage equipment 1 according to the embodiment of the present invention, the pipe member 500 connecting the first through hole 111a of the first electrical panel 101 and the second through hole 112b of the second electrical panel 102 comprises a first member 510 and a second member 520. The first member 510 is located inside the first electrical panel 101 and has a first connecting portion 511 that is connected to the first electrical panel 101, and the second member 520 is located inside the second electrical panel 102 and has a second connecting portion 521 that is connected to the second electrical panel 102. In this way, the pipe member 500 connecting the first electrical panel 101 and the second electrical panel 102 is composed of two members, the first member 510 and the second member 520. By arranging the first connecting portion 511 of the first member 510 inside the first electrical panel 101 and connecting it to the first electrical panel 101, the first member 510 can be attached to the first electrical panel 101 by working from inside the first electrical panel 101. By placing the second connection portion 521 of the second member 520 inside the second electrical panel 102 and connecting it to the second electrical panel 102, the second member 520 can be attached to the second electrical panel 102 by working from the inside of the second electrical panel 102. As a result, even when it is difficult to attach the pipe member 500 from the outside of the first electrical panel 101 and the second electrical panel 102, the pipe member 500 can be attached to the first electrical panel 101 and the second electrical panel 102 from the inside of the first electrical panel 101 and the second electrical panel 102, making the attachment of the pipe member 500 easier. This is particularly effective when the distance between the first electrical panel 101 and the second electrical panel 102 is short. The distance between the side wall 111 of the first electrical panel 101 and the side wall 112 of the second electrical panel 102 (distance L in Figure 6) is preferably 20 mm or more and 300 mm or less, and more preferably 50 mm or more and 200 mm or less. This is particularly effective when the pipe member 500 is placed below the first electrical panel 101 and the second electrical panel 102 (near the bottom wall 115 of the housing 110), as it reduces the amount of workspace required. Therefore, with the energy storage equipment 1, multiple electrical panels 100 can be easily connected using the pipe member 500.

[0112] In some energy storage systems, a piping (wiring) pit is provided in the foundation of the energy storage system. In this case, multiple electrical panels are connected by placing electrical wires, etc., in the piping (wiring) pit. In this embodiment, even if it is difficult to provide a piping (wiring) pit on the site where the energy storage system is to be installed, multiple electrical panels 100 can be easily connected using the pipe member 500.

[0113] The energy storage equipment 1 of this embodiment is suitable for installation in outdoor locations with limited installation space. When installing multiple electrical panels in locations with a large installation area, such as when a vast plot of land is available, sufficient installation space is usually secured, so there is no need to place the electrical panels close together. Therefore, in locations with a large installation area, the technical problem of difficulty in connecting conduit members due to the close distance between electrical panels has not been recognized. In locations with a large installation area, it is also possible to install housings such as boxes or containers large enough for people to enter and exit, as described in Patent Document 1, and install the electrical panels inside them. In this case, there is little need for the electrical panels to be designed for outdoor use, so the technical idea of ​​providing conduit members to protect the wires, etc., between the electrical panels when connecting them with wires, etc., has not easily arisen. On the other hand, in mountainous areas or urban areas with many existing buildings, it may be difficult to place large housings such as containers in narrow or complex terrain. In such cases, if the electrical panels can be placed directly in the installation area, narrow spaces can be effectively utilized. The inventors focused on the following two points. (1) Even when the area and shape of the installation area are unfavorable, it is necessary to arrange multiple electrical panels closely together in order to maximize the energy storage capacity. (2) In order to achieve this arrangement, the distance between electrical panels must be small. Multiple electrical panels constituting the energy storage equipment need to be connected by wires, etc. To protect these wires, etc., it is necessary to cover them with pipe members. However, the inventors anticipated that if the distance between electrical panels is too short, it will be difficult to install the pipe members from the outside of the electrical panels, and that there will be insufficient workspace, etc., and thus came up with the present invention. According to the present invention, multiple electrical panels can be arranged at short intervals of 300 mm or less, preferably 200 mm or less, between the side walls, so that more electrical panels can be installed in narrow spaces compared to conventional methods. Even when electrical panels are arranged at the short intervals mentioned above, the electrical panels can be properly connected, so the present invention is particularly significant when implemented as energy storage equipment installed on small outdoor sites. The structure of the pipe member in this embodiment is effective.

[0114] In the energy storage equipment 1 of this embodiment, the longer of the width or depth dimensions of the first and second electrical panels may be 1,000 mm or more and 2,500 mm or less. By setting this dimension to 2,500 mm or less, multiple electrical panels can be arranged to construct the energy storage equipment even in narrow installation areas or sites with complex terrain where large housings such as containers cannot be installed. Although electrical panels of this size are lighter than containers, they still have a considerable weight. Therefore, conventionally, it has been common to install them with sufficient spacing between them to prioritize ease of transport and placement. This tendency is particularly pronounced for electrical panels where the longer of the width or depth dimension is 1,000 mm or more, due to their heavy weight. In contrast, the present invention employs a configuration in which the pipe members 500 are attached from the inside of the first electrical panel 101 and the second electrical panel 102. Only by adopting this configuration can the distance between the side walls of the two electrical panels be set to a short distance of 300 mm or less, preferably 200 mm or less. Therefore, it becomes possible to construct energy storage facilities with a larger number of electrical panels than conventional systems, even in confined spaces. Specifically, in the energy storage facility according to this embodiment, it is preferable that the longer of the width or depth dimensions of the first and second electrical panels is 1,000 mm or more and 2,500 mm or less, and the distance between the side wall 111 of the first electrical panel 101 and the side wall 112 of the second electrical panel 102 (distance L in Figure 6) is 300 mm or less, and even 200 mm or less. This makes it possible to effectively utilize limited land and achieve a large energy storage capacity. For this reason, the present invention is particularly suitable for installation in mountainous areas or urban areas with many existing buildings, or on sites with confined spaces or complex terrain.

[0115] Since the first through-hole 111a of the first electrical panel 101 and the second through-hole 112b of the second electrical panel 102 are elongated in a predetermined direction (Y-axis direction), the pipe member 500 connecting the first through-hole 111a and the second through-hole 112b can also be elongated in a predetermined direction (Y-axis direction). This allows many through-members 30 (wiring or piping), etc., to pass through the pipe member 500 along the predetermined direction (Y-axis direction). In this configuration, the opening shape of the first through-holes 111a and 112b is a flattened shape with a shorter dimension in the Z-axis direction when viewed from the X-axis direction. Therefore, the space above and below the first through-hole 111a and the second through-hole 112b (in the Z-axis positive or Z-axis negative direction) can be effectively utilized within the electrical panels 101 and 102. As the pipe member, a pipe member with a cross-sectional shape other than circular when viewed from the X-axis direction can be used.

[0116] In the pipe member 500, the cylindrical portion 512 of the first member 510 passes through the first through hole 111a and the second through hole 112b and is connected to the second connecting portion 521, so that the first member 510 and the second member 520 can be easily connected by working inside the second electrical panel 102.

[0117] The first sealing member 610 is positioned between the first connection part 511 and the first electrical panel 101, thereby sealing the space between the first member 510 and the first electrical panel 101. The second sealing member 620 is positioned between the second connection part 521 and the second electrical panel 102, thereby sealing the space between the second member 520 and the second electrical panel 102. This makes it easy to seal the space between the pipe member 500 and the first electrical panel 101 and the second electrical panel 102.

[0118] By positioning the third sealing member 630 between the first member 510 and the second member 520 of the pipe member 500, the space between the first member 510 and the second member 520 can be sealed.

[0119] A third member 530 is provided to narrow the opening 513 (first end opening 513a) and the opening 523 of the pipe member 500. This reduces the opening area of ​​the pipe member 500. Alternatively, one opening can be divided into multiple openings. This improves the fire resistance of the electrical panel 100 (the third member 530 functions as a fire compartment cover). Alternatively, the arrangement of components within the electrical panel 100 can be optimized. If the opening area of ​​the pipe member 500 can be reduced, it will be possible to reduce the passage of flames or gases through the opening of the pipe member 500 in abnormal situations such as overheating of the energy storage element 122, thereby improving fire resistance. If the penetrating member 30 is an electric wire, the third member 532, etc., can separate the main circuit positive wire and the main circuit negative wire to an appropriate distance, or separate the signal wire or ground wire from the main circuit wire.

[0120] The first through-hole 111a and the second through-hole 112b are positioned at the bottom of the first electrical panel 101 and the second electrical panel 102, allowing for easy connection between them. However, at positions away from the ground, even a slight tilt of the first electrical panel 101 and the second electrical panel 102 can result in larger tolerances, potentially making tolerance absorption difficult at the top of the first electrical panel 101 and the second electrical panel 102. This may make it difficult to pass the through-member 30 through the first through-hole 111a and the second through-hole 112b, or to seal the first through-hole 111a and the second through-hole 112b with the pipe member 500. Therefore, by positioning the first through-hole 111a and the second through-hole 112b at the lower parts of the first electrical panel 101 and the second electrical panel 102, the through-member 30 can be easily passed through the first through-hole 111a and the second through-hole 112b, and the pipe member 500 can easily seal the first through-hole 111a and the second through-hole 112b.

[0121] By positioning the first through-hole 111a and the second through-hole 112b at the bottom of the first electrical panel 101 and the second electrical panel 102, it is easy to lift and install the through-hole member 30 even when the through-hole member 30 is heavy (for example, when a busbar is used as the through-hole member 30). In the event of an earthquake, the vibration is limited at the bottom of the first electrical panel 101 and the second electrical panel 102, which prevents damage to the seals of the first through-hole 111a and the second through-hole 112b by the pipe member 500, or prevents the through-hole member 30 from coming out of the first through-hole 111a and the second through-hole 112b.

[0122] In this embodiment, all sealing members (first sealing member 610, second sealing member 620, and third sealing member 630) are arranged on the inside of the electrical panel 100 (101, 102). The arrangement of all sealing members on the inside of the electrical panel 100 is achieved by placing the first connection portion 511 inside the first electrical panel 101, a part of the first member 510 (a part of the cylindrical portion 512) inside the second electrical panel 102, and the second connection portion 521 inside the second electrical panel 102. This prevents the sealing members from being exposed to direct sunlight or direct impact from wind and rain. Therefore, this is preferable from the viewpoint of preventing deterioration of the sealing members (even if sealing members that can withstand exposure to the outside air are selected, the degree of deterioration can be further reduced). The same applies to some of the sealing members in the following modified examples 2, 3, and modified example 4.

[0123] [5. Description of Modifications] Although an embodiment of the present invention, the energy storage equipment 1, has been described above, the present invention is not limited to this embodiment. The embodiments disclosed herein are illustrative in all respects, and the scope of the present invention includes all modifications in the sense and scope equivalent to the claims.

[0124] (Modification 1) In the above embodiment, the pipe member 500 comprises a first member 510 and a second member 520, and the first member 510 and the second member 520 are connected. However, the pipe member 500 does not have to include the second member 520. Figure 13 is a cross-sectional view showing the pipe member 500a and its surrounding structure according to Modification 1 of this embodiment. Figure 13 is a diagram corresponding to Figure 12, and as with Figure 12, the through member 30 and the third member 530, etc. are not shown.

[0125] As shown in Figure 13, the pipe member 500a in this modified example includes a first member 510a instead of the first member 510 and second member 520 that the pipe member 500 in the above embodiment has. In other words, the pipe member 500a does not include the second member 520 in the above embodiment. The first member 510a in this modified example includes a first connecting portion 511 which is placed inside the first electrical panel 101 and connected to the first electrical panel 101, and a cylindrical portion 512, similar to the first member 510 in the above embodiment. Unlike the first member 510 in the above embodiment, the first member 510a in this modified example is connected (fixed) to the side wall 112 of the second electrical panel 102, rather than to the second member 520.

[0126] The tip surface of the cylindrical portion 512 in the X-axis direction faces the side wall 112 in the X-axis direction. The cylindrical portion 512 of the first member 510a is connected (fixed) to the side wall 112 of the second electrical panel 102 in a compressed state, with the fourth sealing member 640 sandwiched between them. The fixing member 740 (bolt) is inserted into the hole 112d of the side wall 112 and fixed to the fixing portion 512a (nut) of the cylindrical portion 512. The fourth sealing member 640 can be the same shape, size, and material as the third sealing member 630. In this way, the pipe member 500a connects the first through hole 111a of the first electrical panel 101 and the second through hole 112b of the second electrical panel 102, but it is not necessary for it to penetrate the second through hole 112b. In other words, in this modified example, the cylindrical portion 512 of the first member 510a penetrates the first through hole 111a, but does not penetrate the second through hole 112b. The other configurations of this modified example are the same as those of the above embodiment, so their description is omitted.

[0127] In this modified example, the same effects as in the above embodiment are achieved. In particular, in this modified example, the pipe member 500a connecting the first through-hole 111a of the first electrical panel 101 and the second through-hole 112b of the second electrical panel 102 comprises a first member 510a, and the first member 510a is provided with a first connecting portion 511 which is placed inside the first electrical panel 101 and connected to the first electrical panel 101. In this way, by placing the first connecting portion 511 of the first member 510a of the pipe member 500a inside the first electrical panel 101 and connecting it to the first electrical panel 101, the first member 510a can be attached to the first electrical panel 101 by working from inside the first electrical panel 101. As a result, even if it is difficult to attach the pipe member 500a from the outside of the first electrical panel 101, the pipe member 500a can be attached to the first electrical panel 101 from the inside, making the attachment of the pipe member 500a easier. Therefore, the electrical panels 100 can be easily connected.

[0128] (Modification 2) In the above embodiment, the pipe member 500 is long in the Y-axis direction, but it does not have to be long in the Y-axis direction. In this case, the cylindrical portion 512 does not have to be long in the Y-axis direction. As an example, the following shows a modification that can be taken when the cylindrical portion 512 is cylindrical in shape. Figure 14 is a cross-sectional view showing the pipe member 500b and its surrounding structure according to Modification 2 of this embodiment. Figure 14 is a diagram corresponding to Figure 12, and as with Figure 12, the through member 30 and the third member 530, etc. are not shown.

[0129] As shown in Figure 14, in this modified example, the pipe member 500b comprises a first member 510b and a second member 520a instead of the first member 510 and second member 520 that the pipe member 500 in the above embodiment has. In this modified example, the first member 510b comprises a cylindrical portion 512b instead of the cylindrical portion 512 that the first member 510 in the above embodiment has. The second member 520a comprises a second connecting portion 524. The entire second member 520a is located inside the second electrical panel 102. (The entire second connecting portion 524 is located inside the second electrical panel 102.) Furthermore, in this modified example, the pipe member 500b comprises a second sealing member 621 instead of the second sealing member 620 and third sealing member 630 that the pipe member 500 in the above embodiment has.

[0130] The cylindrical portion 512b has a cylindrical shape, and a male threaded portion 512c is formed at the end of the cylindrical portion 512b in the positive X-axis direction. The cylindrical portion 512b passes through the first through hole 111a and the second through hole 112b. The cylindrical portion 512b is connected to the second member 520a. Specifically, the cylindrical portion 512b is connected to the second connecting portion 524 of the second member 520a. The second connecting portion 524 is a nut with a female threaded portion formed thereon that connects to the male threaded portion 512c of the cylindrical portion 512b. The second connecting portion 524 is located inside the second electrical panel 102 and is connected to the second electrical panel 102. The second sealing member 621 is located between the second connecting portion 524 and the side wall 112 of the second electrical panel 102 and is a sealing washer that seals the space between the second connecting portion 524 and the side wall 112. The second sealing member 621 comprises a metal outer circumference 621a and an inner circumference 621b which is a gasket (packing). The inner circumference 621b of the second sealing member 621 fits into the male threaded portion 512c of the cylindrical portion 512b, thereby sealing the space between the second sealing member 621 and the cylindrical portion 512b.

[0131] In this way, the pipe member 500b connects the first through-hole 111a of the first electrical panel 101 and the second through-hole 112b of the second electrical panel 102. In this modified example, the outer periphery 621a may be included in the second member 520a. That is, the second member 520a may be defined as the second connection part 524 plus the outer periphery 621a, and the inner periphery 621b may be defined as the second sealing member 621. The other configurations of this modified example are the same as in the above embodiment, so their explanation will be omitted.

[0132] In this modified example, the same effects as in the above embodiment are achieved. In particular, in this modified example, the first member 510b and the second member 520a can be connected (fixed) by screwing the cylindrical portion 512b into the second connecting portion 524, making the installation of the pipe member 500b easier. The second sealing member 621 can easily seal the second through hole 112b.

[0133] (Modification 3) In the above embodiment, the cylindrical portion 512 of the pipe member 500 is a cylindrical portion that extends linearly in the X-axis direction, but it may also have a bellows-shaped portion. Figure 15 is a cross-sectional view showing the pipe member 500c and its surrounding structure according to Modification 3 of this embodiment. Figure 15 is a diagram corresponding to Figure 12, and as with Figure 12, the through member 30 and the third member 530, etc. are not shown.

[0134] As shown in Figure 15, in this modified example, the pipe member 500c has a first member 510c, limiting members 711 and 721 instead of the first member 510, limiting members 710 and 720 that the pipe member 500 in the above embodiment has. In this modified example, the first member 510c has a cylindrical portion 512d instead of the cylindrical portion 512 that the first member 510 in the above embodiment has. The cylindrical portion 512d has a bellows portion 512e. The bellows portion 512e is a bellows-like portion provided around the entire circumference of the central part of the cylindrical portion 512d in the X-axis direction, and the cylindrical portion 512d can expand and contract in the X-axis direction by the bellows portion 512e. The cylindrical portion 512d passes through the first through hole 111a and the second through hole 112b. The dimensions of the opening of the first through hole 111a are large enough for the bellows portion of the cylindrical portion 512d to pass through. In this modified example, the entire second member 520 is located inside the second electrical panel 102. (The entire second connecting portion 521 is located inside the second electrical panel 102.) The cylindrical portion 512d is connected to the second member 520. Specifically, the cylindrical portion 512d is connected to the second connecting portion 521 of the second member 520.

[0135] The limiting member 711 is connected to the projection 111b on the side wall 111 of the first electrical panel 101, and while pressing the first connecting portion 511 in the positive X-axis direction, it restricts the movement of the first connecting portion 511 in the negative X-axis direction, and compresses the first sealing member 610 in the X-axis direction. A cylindrical spacer may be attached to the projection 111b so that the limiting member 711 can be stopped at the optimal tightening position. In this modified example, a male threaded portion is formed on almost the entire surface of the projection 111b, and the limiting member 711 is a nut with a female threaded portion into which the male threaded portion of the projection 111b is inserted (screwed in). The limiting member 711 is connected to and fixed to the projection 111b while in contact with the first connecting portion 511. The restricting member 721 is connected to the projection 112c on the side wall 112 of the second electrical panel 102, and while pressing the second connecting portion 521 in the negative X-axis direction, it restricts the movement of the second connecting portion 521 in the positive X-axis direction, compressing the second sealing member 620 in the X-axis direction. In this modified example, a male threaded portion is formed on almost the entire surface of the projection 112c, and the restricting member 721 is a nut with a female threaded portion into which the male threaded portion of the projection 112c is inserted (screwed in). The restricting member 721 is connected to and fixed to the projection 112c while in contact with the second connecting portion 521.

[0136] As a result, the pipe member 500c connects the first through-hole 111a of the first electrical panel 101 and the second through-hole 112b of the second electrical panel 102. The other configurations of this modified example are the same as those of the above embodiment, so their description is omitted.

[0137] In this modified example, the same effects as in the above embodiment are achieved. In particular, in this modified example, since the cylindrical portion 512d is equipped with a bellows portion 512e, construction errors and tolerances when connecting the first member 510c and the second member 520 can be easily absorbed. Even if the distance between the side wall 111 of the first electrical panel 101 and the side wall 112 of the second electrical panel 102 changes after construction, the bellows portion 512e can absorb this change.

[0138] (Modification 4) In the above embodiment, the first member 510 of the pipe member 500 is provided with a cylindrical portion 512, but the second member 520 may also be provided with a cylindrical portion. The entire second connection portion 521 of the second member 520d is located inside the second electrical panel 102. Figure 16 is a cross-sectional view showing the pipe member 500d and its surrounding configuration according to Modification 4 of this embodiment. Figure 16 corresponds to Figure 12, and as with Figure 12, the through member 30 and the third member 530 are not shown.

[0139] As shown in Figure 16, in this modified example, the pipe member 500d includes a first member 510d and a second member 520d instead of the first member 510 and second member 520 that are present in the pipe member 500 in the above embodiment.

[0140] The first member 510d comprises a first connecting portion 511 and a first cylindrical portion 515. The first connecting portion 511 has the same configuration as the first connecting portion 511 in the above embodiment, so a detailed explanation is omitted. The first cylindrical portion 515 is shorter in the X-axis direction than the cylindrical portion 512 in the above embodiment, and a third connecting portion 516 is positioned between the side wall 111 of the first electrical panel 101 and the side wall 112 of the second electrical panel 102. In other words, the first cylindrical portion 515 passes through the first through hole 111a of the first electrical panel 101, but does not pass through the second through hole 112b of the second electrical panel 102. A first projection 515a, which is a flange for fixing the fixing member 750, is provided around the first cylindrical portion 515 by joining it by welding or the like. The first through hole 111a of the first electrical panel 101 is formed to a size that allows the first projection 515a to pass through.

[0141] The second member 520d comprises a second connecting portion 521 and a second cylindrical portion 525. The second member 520d has a configuration that is symmetrical with respect to the YZ plane to the first member 510d. For this reason, a detailed explanation of the configuration of the second member 520d will be omitted, but it differs from the second member 520 in the above embodiment in the following respects. A portion of the second member 520d is located inside the second electrical panel 102, and the other portion is located outside the second electrical panel 102. In other words, the second cylindrical portion 525 penetrates the second through-hole 112b of the second electrical panel 102 (but does not penetrate the first through-hole 111a of the first electrical panel 101). The second cylindrical portion 525 has a fourth connecting portion 526, which is the wall at the end in the negative X-axis direction, and the fourth connecting portion 526 is located between the side wall 111 of the first electrical panel 101 and the side wall 112 of the second electrical panel 102. A second projection 525a, which is a flange for fixing the fixing member 750, is attached to the periphery of the second cylindrical portion 525 by welding or the like. The second through hole 112b of the second electrical panel 102 is formed to a size that allows the second projection 525a to pass through.

[0142] A third sealing member 630 and a spacing setting member 650 are positioned between the third connecting portion 516 of the first cylindrical portion 515 of the first member 510d and the fourth connecting portion 526 of the second cylindrical portion 525 of the second member 520d. The third connecting portion 516 faces the fourth connecting portion 526 in the X-axis direction. The spacing setting member 650 is a metal block or the like provided on the first member 510d and is fixed between the third connecting portion 516 and the fourth connecting portion 526 by press-fitting or the like to maintain the spacing between the third connecting portion 516 and the fourth connecting portion 526. The first protrusion 515a of the first cylindrical portion 515 and the second protrusion 525a of the second cylindrical portion 525 are fixed by a fixing member 750, thereby fixing the first cylindrical portion 515 (first member 510d) and the second cylindrical portion 525 (second member 520d). In this embodiment, the fixing member 750 is composed of a bolt and a nut. In other words, the first cylindrical portion 515 is indirectly connected to the second connecting portion 521 via the second cylindrical portion 525.

[0143] By tightening the bolts and nuts of the fixing member 750, the first sealing member 610, the second sealing member 620, and the third sealing member 630 are compressed by an amount sufficient to provide a waterproofing effect (a sufficiently large amount of compression compared to the minimum required amount). The fixing member 750 is positioned in the external space (OUT) shown in Figure 12. The enlargement of the first through-hole 111a and the second through-hole 112b may be suppressed by using auxiliary members (such as L-shaped brackets) at the fixing points of the fixing member 750. The fixing member 750 may be positioned in place of the spacing setting member 650, or in addition to the spacing setting member 650. In this case, the fixing member 750 is positioned in the internal space (IN) shown in Figure 12. The first sealing member 610 and the second sealing member 620 may be compressed by changing the limiting members 710 and 720 from cap nuts to nuts. In this case, fixing with the fixing member 750 is not required. Cylindrical spacers may be attached to the protrusions 111b and 112c so that the limiting members 710 and 720 can be stopped at the optimal tightening position.

[0144] (Other variations) In the above embodiment, the electrical panel 100 is configured to house the energy storage element 122, but it may also house a power converter, or it may house both the energy storage element 122 and the power converter. The electrical panel 300 is configured to house a power converter, but it may also house the energy storage element 122, or it may house both the energy storage element 122 and the power converter. In other words, the electrical panel 100 or 300 only needs to house at least one of the energy storage element 122 and the power converter. It is also possible that one of the multiple electrical panels 100 and 300 provided in the energy storage equipment 1 does not house both the energy storage element 122 and the power converter.

[0145] In the above embodiment, the first through-hole 111a is positioned at the bottom of the first electrical panel 101, but it may also be positioned in the center or top of the first electrical panel 101. The same applies to other through-holes, such as the second through-hole 112b. The first through-hole 111a and the second through-hole 112b are positioned at the same location when viewed from the X-axis direction, but they may also be positioned at different locations.

[0146] In the above embodiment, the side wall 111 of the first electrical panel 101 and the side wall 112 of the second electrical panel 102 are arranged at a distance from each other. However, the side wall 111 of the first electrical panel 101 and the side wall 112 of the second electrical panel 102 may be arranged in contact with each other. Even in this case, the pipe member 500 connects the first through hole 111a of the side wall 111 of the first electrical panel 101 and the second through hole 112b of the side wall 112 of the second electrical panel 102.

[0147] In the above embodiment, the first electrical panel 101 and the second electrical panel 102, which are two electrical panels 100 in the energy storage equipment 1 that are aligned in the X-axis direction, are connected by a pipe member 500, but the invention is not limited to this. With respect to three or more electrical panels 100 aligned in the X-axis direction, adjacent electrical panels 100 may be connected by a pipe member 500, or electrical panels 100 and electrical panels 300 may be connected by a pipe member 500. Multiple electrical panels 100 aligned in the Y-axis direction may be connected by multiple pipe members 500. In other words, through holes may be formed in other walls of the housing 110 of the first electrical panel 101, and through holes may be formed in other walls of the housing 110 of the second electrical panel 102. Through holes may also be formed in the walls of the housings 110 of other electrical panels 100. In these through holes as well, the through member 30 may pass through and be connected to the pipe member 500, similar to the first through hole 111a and the second through hole 112b.

[0148] In the above embodiment, the pipe member 500 is provided with third members 531 to 535, but it is not required to provide some or all of the third members 531 to 535. Similarly, the pipe member 500 is not required to provide the edge protector 522, nor is it required to provide the edge protector 531a.

[0149] In the above embodiment, the first sealing member 610 is a gasket (packing), but an adhesive or the like may be used as the first sealing member 610. The pipe member 500 does not have the first sealing member 610 and may be sealed by means other than the first sealing member 610, such as attaching waterproof tape.

[0150] In the above embodiment, the pipe member 500 is provided with a first sealing member 610, a second sealing member 620, and a third sealing member 630, but it is not necessary to provide some or all of these sealing members. Sealing members may not be provided in places where a sealing structure is not required. In this case, the limiting members 710 and 720 may be changed from cap nuts to nuts, and male threads may be provided from the base of the projections 111b and 112c, and the first connecting part 511 and the second connecting part 521 may be tightened so that they contact the side walls 111 and 112 of the electrical panel 100. In this case, the limiting member 710 may be called the first fixing member, the limiting member 720 the second fixing member, and the fixing member 730 the third fixing member. Alternatively, if only positioning is required, the limiting members 710 and 720 may not be provided. Furthermore, both the projections 111b and 112c and the limiting members 710 and 720 may not be provided. The same applies to the second sealing member 620 and the third sealing member 630. The same applies to variations 1 to 4.

[0151] In the above embodiment, the housing 110 of the electrical panel 100 is provided with a first shelf 117 and a plurality of second shelves 118, but it is not limited to this. The housing 110 may have only one second shelf 118, or it may not have any second shelves 118 at all. The housing 110 may not have either the first shelf 117 or the second shelf 118, and the energy storage device 120 may be placed on the bottom wall 115. In this case, the bottom wall 115 on which the energy storage device 120 is placed can be said to be a shelf of the housing 110. In other words, the housing 110 is provided with at least a shelf on which the energy storage device 120 is placed.

[0152] In the above embodiment, the energy storage device 1 may or may not have any number of through members 30. If there are no through members 30, the pipe member 500 is simply a hollow pipe. In this case, the function of the pipe member 500 is exemplified as follows: For example, the pipe member 500 may be a pipe through which cooling air passes. For example, the pipe member 500 may be a pipe through which fire extinguishing agent passes when the energy storage element 122 overheats.

[0153] In the above embodiment, the protrusions 111b, 112c and the limiting members 710, 720 are helpful for assembly work, but are not necessarily required, and a configuration in which at least one of the protrusions 111b, 112c and the limiting members 710, 720 is not provided is also possible.

[0154] In the above embodiment, all of the multiple electrical panels 100 and 300 are assumed to have the above configuration, but this is not limited to this. It is not necessary for any of the multiple electrical panels 100 and 300 to have the above configuration.

[0155] As shown in the modified examples 1 and 4 above, if the sealing member (the fourth sealing member 640 in modified example 1 and the third sealing member 630 in modified example 4) is exposed to the outside air, the location of the sealing member may be covered with tape or putty.

[0156] In the above embodiment, the first member is a single, integrated member, but the embodiment is not limited to this. The first member may be composed of divided members. The first member as a whole only needs to be annular.

[0157] In the above embodiment, the second member is a single, integrated member, but the embodiment is not limited to this. The second member may be composed of divided members. The second member as a whole only needs to be annular.

[0158] In the above embodiments and modifications 1 to 4, the first seal member, second seal member, third seal member, and fourth seal member were each integral parts, but this is not limited to them. Each seal member may be composed of separate parts. Each seal member as a whole only needs to be a continuous annular shape.

[0159] In the above embodiments and modifications 1 to 4, the pipe members are provided with each sealing member, but this is not limited to this. The pipe members may not be provided with sealing members, and the energy storage equipment 1 may be provided with each sealing member.

[0160] Embodiments constructed by arbitrarily combining the above embodiments and modifications are also included within the scope of the present invention.

[0161] This invention can be applied to energy storage equipment that includes an electrical panel.

[0162] 1 Energy storage equipment 30, 31, 32, 33, 34 Through members 100, 300 Electrical panel 101 First electrical panel 102 Second electrical panel 110 Housing 111, 112 Side wall 111a First through hole (through hole) 111b, 112c Projection 112a Through hole 112b Second through hole (through hole) 120 Energy storage device 122 Energy storage element 200, 400 Air conditioning device 500, 500a, 500b, 500c, 500d Pipe members 510, 510a, 510b, 510c, 510d First member 511 First connection part 512, 512b, 512d Cylindrical part 512a Fixing part 512c Male screw part 512e Bellows section 513, 523, 531b Opening 520, 520a, 520d Second member 521, 524 Second connection section 530, 531, 532, 533, 534, 535 Third member 610 First sealing member 620, 621 Second sealing member 621a Outer circumference 621b Inner circumference 630 Third sealing member 640 Fourth sealing member 710, 711, 720, 721 Restricting member 730, 740, 750 Fixing member

Claims

1. Energy storage equipment comprising: a first electrical panel; a second electrical panel; and a tubular member connecting a first through-hole of the first electrical panel and a second through-hole of the second electrical panel, wherein at least one of the first electrical panel and the second electrical panel houses at least one of an energy storage element and a power converter; the tubular member comprises a first member and a second member; the first member is disposed within the first electrical panel and includes a first connection portion connected to the first electrical panel; and the second member is disposed within the second electrical panel and includes a second connection portion connected to the second electrical panel.

2. The energy storage device according to claim 1, wherein the first through-hole is long in a predetermined direction.

3. The energy storage device according to claim 1 or 2, wherein the first member further comprises a cylindrical portion that penetrates the first through-hole, and the cylindrical portion is connected to the second member.

4. The energy storage device according to claim 3, wherein the cylindrical portion penetrates the second through-hole.

5. The energy storage device according to claim 1 or 2, wherein the first member further comprises a first cylindrical portion that penetrates the first through hole, the second member further comprises a second cylindrical portion that penetrates the second through hole, and the first cylindrical portion is connected to the second cylindrical portion.

6. The energy storage equipment according to claim 1 or 2, further comprising: a first sealing member disposed between the first connection portion and the first electrical panel; and a second sealing member disposed between the second connection portion and the second electrical panel.

7. The energy storage device according to claim 1 or 2, further comprising a third sealing member disposed between the first member and the second member of the pipe member.

8. The energy storage device according to claim 1 or 2, further comprising a third member that narrows the opening of the pipe member.

9. Energy storage equipment comprising: a first electrical panel; a second electrical panel; and a pipe member connecting a first through-hole of the first electrical panel and a second through-hole of the second electrical panel, wherein at least one of the first electrical panel and the second electrical panel houses at least one of an energy storage element and a power converter; the pipe member comprises a first member; and the first member comprises a first connection portion disposed within the first electrical panel and connected to the first electrical panel.

10. The energy storage device according to claim 9, wherein the first through-hole is long in a predetermined direction.

11. The energy storage equipment according to claim 9 or 10, wherein the first member further comprises a cylindrical portion that penetrates the first through-hole, and the cylindrical portion is connected to the second electrical panel.

12. The energy storage equipment according to claim 9 or 10, further comprising: a first sealing member disposed between the first member and the first electrical panel; and a fourth sealing member disposed between the first member and the second electrical panel.

13. The energy storage device according to claim 9 or 10, further comprising a third member that narrows the opening of the pipe member.

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