JP2017098033A - Storage board, power storage device and power storage system - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a storage board, a power storage device and a power storage system that are flexibly adaptable to increase of the capacity of a power storage battery.SOLUTION: A storage board 2 is used as one of plural storage boards 2 in a board system to which the plural storage boards 2 are continuously connected. The storage board 2 has a board body 3. The board body 3 has plural storage spaces for storing the respective power storage battery units. The board body 3 is provided with a connection structure 440 for connecting the other storage boards 2 and the board body 3. That is, with respect to the storage board 2, the plural power storage battery units 5 can be accommodated in one storage board 2 by the plural storage spaces provided in the board body 3. Further, the storage board 2 is connected to the other storage boards 2 by the connection structure 440 provided to the board body 3 to thereby constitute a board system. Therefore, in the board system, the plural storage boards 2 each capable of storing the plural storage battery units can be integrated and handled as one device.SELECTED DRAWING: Figure 12

Description

  The present invention relates to a storage board, a power storage device, and a power storage system.

  Conventionally, a power storage device including a plurality of battery modules (storage battery units) is known (see, for example, Patent Document 1). The power storage device described in Patent Document 1 includes a plurality of battery modules and a housing (storage board) that holds the plurality of battery modules. Each of the plurality of battery modules includes a battery pack and a case that houses the battery pack. The housing includes a frame block made up of a plurality of frames and a housing made up of a plurality of panels. Furthermore, in the power storage device described in Patent Document 1, each of the plurality of battery modules includes a large number of battery cells.

JP 2013-196858 A

  In the power storage device described in Patent Document 1, the number of battery modules held in the housing is fixed, and the number of battery cells included in each battery module is also fixed. Therefore, the power storage device described in Patent Document 1 has a problem that it cannot be adapted to the expansion of the storage battery capacity.

  This invention is made | formed in view of the said reason, and it aims at providing the storage panel, electrical storage apparatus, and electrical storage system which can be flexibly adapted to expansion of storage battery capacity.

  A storage board according to the present invention is a storage board used as one of the plurality of storage boards in a board system in which a plurality of storage boards are connected, each having a plurality of storage spaces for storing storage battery units. The board body is provided with a connection structure for connecting another storage board and the board body.

  The power storage device according to the present invention includes the storage panel and the storage battery unit stored in the storage panel.

  The power storage system according to the present invention includes the power storage device and a power conversion device that converts power of the power storage device.

  The present invention has the advantage that it can be flexibly adapted to the expansion of storage battery capacity.

It is sectional drawing which looked at the electrical storage apparatus of embodiment from the side. It is a front view of the state where a lid was removed from a power storage device of an embodiment. 3A is a front view of a storage panel used in the power storage device of the embodiment, FIG. 3B is a left side view, and FIG. 3C is a plan view. 4A is a rear view of a storage board used in the power storage device of the embodiment, FIG. 4B is a right side view, and FIG. 4C is a bottom view. It is a perspective view of the panel main body which comprises the storage panel used for the electrical storage apparatus of embodiment. 6A is a cross-sectional view of the power storage device of the embodiment as viewed from above, and FIG. 6B is an enlarged view of an X region in FIG. 6A. 7A is a perspective view of a main part of the storage board of the embodiment, FIG. 7B is an enlarged view of the X1 region of FIG. 7A, and FIG. 7C is an enlarged view of the X2 region of FIG. It is a schematic block diagram of the electrical storage system using the electrical storage apparatus of embodiment. 9A is a front view of a storage battery unit used in the power storage device of the embodiment, FIG. 9B is a left side view, and FIG. 9C is a plan view. FIG. 10A to FIG. 10D are perspective views seen from an oblique front for explaining a procedure for attaching the storage battery unit to the storage board in the power storage device of the embodiment. FIG. 11A and FIG. 11B are perspective views seen from obliquely behind for explaining a procedure for attaching the storage battery unit to the storage board in the power storage device of the embodiment. 12A is a front view showing a state in which the power storage devices of the embodiment are arranged side by side, and FIG. 12B is an enlarged view in which a part of the X region of FIG. 12A is broken. It is a front view of the power conversion system of an embodiment.

  The following embodiments relate to a storage panel, a power storage device, and a power storage system, and more particularly to a storage panel, a power storage device, and a power storage system that can store a plurality of storage battery units.

(1) Outline As shown in FIGS. 1, 2, 12 </ b> A, and 12 </ b> B, the storage board 2 of the present embodiment is one of a plurality of storage boards 2 in a board system in which a plurality of storage boards 2 are connected. This is a storage board 2 used as a container, and includes a board body 3. The panel body 3 has a plurality of storage spaces (first storage space S1, second storage space S2) for storing the storage battery units 5 (5A, 5B), respectively. The board body 3 is provided with a connection structure 440 for connecting the other storage board 2 and the board body 3.

  That is, in the storage panel 2 of the present embodiment, a plurality of storage battery units 5 are combined into a single storage panel 2 by a plurality of storage spaces (first storage space S1, second storage space S2) provided in the panel body 3. Can be stored. The plurality of storage battery units 5 are integrated by being stored in one storage panel 2, and can be handled as one device. Further, the storage board 2 is connected to another storage board 2 by a connection structure 440 provided in the board body 3 to constitute a board system. Therefore, in the panel system, a plurality of storage panels 2 each capable of storing a plurality of storage battery units 5 can be integrated and handled as one device. Therefore, according to the storage panel 2 of this embodiment, the number of the storage battery units 5 can be increased as necessary, and there is an advantage that a scalable panel system that can be flexibly adapted to the expansion of the storage battery capacity can be realized. is there.

(2) Details Hereinafter, the storage board, power storage device, and power storage system of this embodiment will be described with reference to the drawings. However, the configuration described below is merely an example of the present invention, and the present invention is not limited to the following embodiment. Therefore, various modifications other than this embodiment can be made according to the design and the like as long as they do not depart from the technical idea of the present invention.

  In the following, unless otherwise specified, the vertical direction (vertical direction) and the horizontal direction when the panel body 3 is viewed from the front (opening 30 side) with the storage panel 2 installed on the floor are It demonstrates as a direction and a left-right direction. That is, in FIG. 2, the up, down, left, and right directions are defined as indicated by the arrows “up”, “down”, “left”, and “right”. In the following description, the depth direction when the board body 3 is viewed from the front (opening 30 side) in the state where the storage board 2 is installed on the floor will be referred to as the front-rear direction, and the opening 30 side will be described as the front. That is, the front and rear directions are defined as indicated by the “front” and “back” arrows in FIG. However, these directions are not intended to define the installation direction of the storage panel 2. In addition, the arrows indicating the directions in the drawings are merely shown for explanation, and do not accompany the substance.

(2.1) Power Storage System FIG. 8 is a schematic configuration diagram of the power storage system of the present embodiment. The power storage system of the present embodiment includes a plurality (two in the present embodiment) of power storage devices 1 and a plurality (two in the present embodiment) of power conversion devices 8. In addition, the power storage system of this embodiment includes a plurality (two in this embodiment) of solar power generation devices 9, a connection box 10, a distribution board 11, a shared distribution board 12, and a backup distribution board 13. And further. In FIG. 8, the connection relationship by the power line is indicated by a solid line, and the connection relationship for communication is indicated by a broken line.

  As shown in FIG. 8, the power storage device 1 includes a plurality (two in this embodiment) of storage battery units 5 and a storage panel 2 that stores the plurality of storage battery units 5. In the present embodiment, when the two storage battery units 5 are distinguished, the upper storage battery unit 5 in the vertical direction is expressed as a second storage battery unit 5B, and the lower storage battery unit 5 is expressed as a first storage battery unit 5A. To do. The storage battery unit 5 includes a storage battery 50 and a casing 51 that houses the storage battery 50.

  The power conversion device 8 has a function of converting at least the power of the power storage device 1. As shown in FIG. 8, the power converter 8 includes an inverter (power conditioner) 81, a self-supporting controller 82 (82 </ b> A or 82 </ b> B), a plurality of DC / DC converters 83, and DC / DC converters 84 and 85. It has. The plurality of DC / DC converters 83 are provided in one-to-one correspondence with the plurality of solar battery panels included in the solar power generation device 9. The DC / DC converters 84 and 85 are provided in one-to-one correspondence with the two storage battery units 5.

  Here, the ground terminal Ec of the storage board 2 is connected to the ground terminal Ec of the common distribution board 12 through an electric wire as shown in FIG. Moreover, the ground terminal Ec of the housing | casing 51 of the storage battery unit 5 is connected to the ground terminal Ec of the housing | casing 86 of the power converter device 8 via an electric wire. Furthermore, the ground terminal Ec of the housing 86 of the power conversion device 8 is connected to the ground terminal Ec of the shared distribution board 12 via an electric wire. That is, in the power storage system of the present embodiment, the ground terminal Ec of the storage panel 2 and the ground terminal Ec of the housing 51 of the storage battery unit 5 are not directly connected, and the ground terminal Ec of the housing 86 of the power conversion device 8. It is indirectly connected via

  In other words, the storage battery unit 5 is grounded in the power conversion device 8, and the storage panel 2 is grounded in the distribution board (here, the shared distribution board 12). Thus, in the power storage device 1, the storage battery unit 5 is grounded without the storage panel 2, and the storage panel 2 and the storage battery unit 5 are individually grounded. In order to ground individually, the structure which electrically insulates the storage panel 2 and the housing | casing 51 of the storage battery unit 5 is required. A specific configuration (insulating sheet 39 and insulating member 390) for electrically insulating the storage board 2 and the casing 51 of the storage battery unit 5 will be described later.

(2.2) Storage board Next, the specific structure of the storage board 2 is demonstrated with reference to FIGS.

  The storage board 2 includes a box-shaped board main body 3 having an opening 30 formed on the front surface, and a lid 4 attached to the board main body 3 so as to close the opening 30. The panel body 3 includes a panel block 31, a plurality (two in this embodiment) of vertical frames 32A, and a plurality (four in this embodiment) of horizontal frames 32B. The panel body 3 includes a plurality of (four in this embodiment) support bars 33, a plurality (two in this embodiment) support bases 34, and a plurality (four in this embodiment) of first holdings. A member 35 and a plurality (four in this embodiment) of second holding members 36 are further provided.

  The panel block 31 is formed of a plurality of metal panels (first to fifth panels 311 to 315) in a vertically long rectangular box shape whose front surface is open. As shown in FIG. 5, the panel block 31 includes a first panel 311 constituting the upper surface, a second panel 312 constituting the lower surface, a third panel 313 constituting the right side surface, and a fourth panel constituting the left side surface. It has the panel 314 and the 5th panel 315 which comprises a rear surface.

  The first panel 311 has a rectangular plate shape that is long in the left-right direction. The first panel 311 is provided with a first wiring hole 311A and a second wiring hole 311B. The first wiring hole 311A opens in a rectangular shape as shown in FIGS. 3C and 5. The first wiring hole 311A is on the rear surface side (the fifth panel 315 side) with respect to the straight line SL that bisects the first panel 311 in the front-rear direction (vertical direction in FIG. 3C), and on the right side in the left-right direction. Is provided. The first wiring hole 311A is closed by a first lid plate 38A formed in a rectangular plate shape. In addition, the second wiring hole 311B opens in a rectangular shape as shown in FIGS. 3C and 5. The second wiring hole 311B is provided on the rear surface side with respect to the straight line SL and on the left side in the left-right direction. The second wiring hole 311B is closed by a second lid plate 38B formed in a rectangular plate shape.

  In this embodiment, as shown in FIG. 2, the conduit 42A is attached to the first lid 38A that closes the first wiring hole 311A, and the conduit 42B is attached to the second lid 38B that closes the second wiring hole 311B. It has been. The first DC wire 43A that is electrically connected to the storage battery unit 5 is drawn into the storage board 2 through the conduit 42A, and is electrically connected to each storage battery unit 5 through the space on the back side of the storage battery unit 5. Connected. The second AC wire 43B that is electrically connected to the heater unit 6 (described later) is drawn into the storage board 2 through the conduit 42B, and passes through the space on the back side of the storage battery unit 5 through the terminal block 7 ( (See FIG. 2). The terminal block 7 is electrically connected to the heater unit 6. A grounding second electric wire 43B that electrically connects the ground terminal 40 (see FIG. 1) of the panel body 3 and the ground terminal Ec (see FIG. 8) of the common distribution board 12 also passes through the conduit 42B. Are pulled into the storage board 2 and electrically connected to the ground terminal 40. The ground terminal 40 of the panel body 3 is the ground terminal Ec (see FIG. 8) of the storage panel 2.

  As a specific example, a through hole is formed in the first lid plate 38A, and the end of the conduit 42A is attached to the opening periphery of the through hole, whereby the first electric wire 43A is connected to the first lid plate 38A. It is drawn into the storage board 2 through the hole. Similarly, a through hole is formed in the second lid plate 38B, and the end of the conduit 42B is attached to the opening periphery of the through hole, so that the second electric wire 43B has a through hole in the second lid plate 38B. Through the storage board 2.

  As shown in FIG. 4A and FIG. 5, the fifth panel 315 is welded in the vertical direction by welding two plate materials at the butted portion in a state where two plate materials long in the vertical direction are butted in the left-right direction. Configure one long panel. As shown in FIG. 6B, ribs 315 </ b> A that protrude toward the front are integrally provided at the abutting portions of the two plates of the fifth panel 315. Each of the two plate members has a shape in which the butted portion is bent forward, and the ribs 315A are configured by these butted portions. That is, in the present embodiment, the rib 315A is integral with the fifth panel 315.

  In the storage board 2 of this embodiment, the rib 315A causes the first electric wire 43A drawn into the storage board 2 through the first wiring hole 311A and the second electric wire drawn into the storage board 2 through the second wiring hole 311B. 43B can be wired separately in the left-right direction. That is, the internal space of the storage board 2 is divided into two in the left-right direction by the ribs 315A. The first electric wire 43A passes through the space on the first wiring hole 311A side (right side in the present embodiment) with respect to the rib 315A, and the second electric wire 43B has the second wiring hole 311B side with respect to the rib 315A. It is possible to pass through the space (left side in this embodiment).

  The vertical frame 32A is made of metal and is elongated in the vertical direction. The vertical frame 32 </ b> A is disposed at a corner portion constituted by the fifth panel 315 and the third panel 313 and a corner portion constituted by the fifth panel 315 and the fourth panel 314, respectively. As shown in FIGS. 5 and 6A, the vertical frame 32 </ b> A includes a frame main body 321 having an L-shaped cross section perpendicular to the longitudinal direction (vertical direction), and an attachment piece 322. The frame body 321 includes a portion protruding forward from the front surface of the fifth panel 315, and a portion extending from the front edge of the portion along the fifth panel 315 toward the opposite side of the rib 315A. The cross section is formed in an L shape. The attachment piece 322 is formed so as to protrude from the rear end edge of the frame main body 321 along the fifth panel 315 toward the rib 315A. The vertical frame 32 </ b> A is coupled to the panel block 31 by fixing the attachment piece 322 to the fifth panel 315.

  The horizontal frame 32B is made of metal and is formed long in the front-rear direction. The horizontal frame 32B is attached to the inner surface of each of the third panel 313 and the fourth panel 314. Two horizontal frames 32B are attached on the inner side surface of the third panel 313 with a space in the vertical direction, and two horizontal frames 32B are attached on the inner side surface of the fourth panel 314 with a space in the vertical direction. It has been. Further, the horizontal frame 32B attached to the third panel 313 and the horizontal frame 32B attached to the fourth panel 314 have the same vertical position. That is, the horizontal frame 32B attached to the third panel 313 and the horizontal frame 32B attached to the fourth panel 314 are arranged to face each other in the left-right direction. The cross-sectional shape orthogonal to the longitudinal direction (front-rear direction) of the horizontal frame 32B is a convex shape in which the central portion in the vertical direction protrudes inward (opposite the horizontal frame 32B side) (see FIG. 10A).

  Thus, in this embodiment, the panel body 3 includes a panel (first to fifth panels 311 to 315) surrounding the storage space, and a frame (vertical frame 32A and horizontal frame 32B) fixed to the inner surface of the panel. And have. The storage space here is a space for storing the storage battery unit 5 (first storage space S1 or second storage space S2).

  The support bar 33 is made of metal and is long in the left-right direction. The cross-sectional shape orthogonal to the longitudinal direction (left-right direction) of the support bar 33 is a convex shape in which the central portion in the front-rear direction protrudes upward. The support bar 33 is attached across the pair of horizontal frames 32B so as to be bridged between the pair of horizontal frames 32B. The pair of horizontal frames 32B here are the horizontal frames 32B facing each other in the left-right direction. That is, the support bar 33 is held by the horizontal frame 32B. Further, two support bars 33 arranged in the front-rear direction form one set, and the pair of support bars 33 are attached to the pair of horizontal frames 32B.

  The support base 34 is a metal plate material. The support base 34 is screwed to the pair of support bars 33 in a state of being disposed so as to straddle the pair of support bars 33 arranged side by side in the front-rear direction. In the present embodiment, two pairs of the pair of horizontal frames 32B and the pair of support bars 33 are provided in the vertical direction. Therefore, the support base 34 is also provided with a two-stage (upper and lower two-stage) support base 34 in the vertical direction.

  The support base 34 has a rectangular plate-like base body 341 that is long in the left-right direction, a first stopper 342 that protrudes upward from the rear end edge of the base body 341, and a second stopper that protrudes upward from the left end edge of the base body 341. 343. The first stopper 342 is disposed behind the storage space (the first storage space S1 or the second storage space S2) for storing the storage battery unit 5, and comes into contact with the rear surface of the storage battery unit 5 so that the rear storage battery unit 5 It functions as a movement regulating member (stopper) that regulates movement. An insulating sheet 39 is attached to the support base 34 so as to cover the upper surface of the base body 341, the front surface of the first stopper 342, and the right side surface of the second stopper 343. Therefore, in a state where the storage battery unit 5 is placed on the support base 34, the support base 34 and the housing 51 of the storage battery unit 5 are electrically insulated. In the drawing, the support table 34 is also denoted by reference numerals. However, for example, in FIG. 5 and the like, the support table 34 is actually hidden by the insulating sheet 39.

  With the above configuration, the storage board 2 of the present embodiment has a first storage space S1, a second storage space S2, and a third storage space S3 as shown in FIG. The first storage space S <b> 1 is a space surrounded by the first panel 311, the third panel 313, the fourth panel 314, and the upper support base 34. The second storage space S2 is a space surrounded by the upper support base 34, the third panel 313, the fourth panel 314, and the lower support base 34. The third storage space S3 is a space surrounded by the lower support base 34, the second panel 312, the third panel 313, and the fourth panel 314. In the storage panel 2 of the present embodiment, the storage battery unit 5 is stored in the first storage space S1 and the second storage space S2, and the heater unit 6 is stored in the third storage space S3. That is, among the first to third storage spaces S1 to S3, the storage battery unit 5 is stored only in the first storage space S1 and the second storage space S2. The simple “storage space” means the first storage space S1 or the second storage space S2 in which the storage battery unit 5 is stored.

  In other words, the panel main body 3 includes a support base 34 on which the storage battery unit 5 is placed, which is disposed below each storage space (the first storage space S1 or the second storage space S2). Therefore, in a state where the storage battery unit 5 is stored in the storage space, the storage battery unit 5 is placed on the support base 34, and the weight of the storage battery unit 5 is supported by the support base 34.

  Next, the structure of the 1st holding member 35 and the 2nd holding member 36 is demonstrated with reference to FIG. 7A-FIG. 7C. 7A to 7C, the panel block 31 is not shown so that the inside of the storage board 2 can be easily understood, and the outline of the storage board 2 is indicated by an imaginary line (two-dot chain line). Here, the first storage space S1 will be described, but the second storage space S2 has the same configuration.

  The 1st holding member 35 and the 2nd holding member 36 are arrange | positioned away in the sliding direction (this embodiment left-right direction) which cross | intersects the front-back direction in a horizontal surface. In the present embodiment, two first holding members 35 and two second holding members 36 are provided for one storage space (first storage space S1 or second storage space S2). That is, the storage battery unit 5 stored in one storage space is held by the four holding members (the first holding member 35 and the second holding member 36). Further, in the present embodiment, since two storage spaces are provided in one board body 3, four first holding members 35 and four second holding members 36 are provided for each board body 3. It will be. Hereinafter, when the plurality of (four in the present embodiment) first holding members 35 are not distinguished, each of the plurality of first holding members 35 is simply referred to as a “first holding member 35”. Similarly, when the plurality of (four in the present embodiment) second holding members 36 are not distinguished, each of the plurality of second holding members 36 will be simply referred to as “second holding member 36”.

  As shown in FIG. 7A, the first holding member 35 is provided in the panel main body 3 and on the left side of the storage space (the first storage space S1 or the second storage space S2). The first holding member 35 is provided on the frame (vertical frame 32A). Here, the position of the first holding member 35 in the vertical direction is determined in accordance with the position of the first mounting portion 55 (see FIG. 9A) of the storage battery unit 5 in the state of being stored in the storage space. Specifically, the height from the upper surface of the base body 341 of the support base 34 to the first holding member 35 substantially matches the height from the lower surface of the storage battery unit 5 to the first mounting portion 55. Details of the first mounting portion 55 will be described in the section “(2.3) Storage battery unit”.

  As shown in FIG. 7B, the first holding member 35 is formed with an insertion port 351 that opens to the right side surface that is the surface facing the storage space (the first storage space S1 or the second storage space S2) in the sliding direction. ing. The insertion port 351 is a pocket (hole) into which the first attachment portion 55 is inserted. That is, the first mounting portion 55 is inserted into the first holding member 35 by inserting the first mounting portion 55 into the insertion port 351 of the first holding member 35 from the storage space side in the sliding direction. In this state, the first holding member 35 holds the first attachment portion 55 in the insertion port 351 and restricts the movement of the first attachment portion 55 in the front-rear direction. In other words, the first holding member 35 and the first mounting portion 55 are inserted in the front-rear direction in a state where the first mounting portion 55 is inserted while being moved relative to the first holding member 35 in the sliding direction. The movement of the first attachment portion 55 is restricted. In the present embodiment, the first holding member 35 restricts the movement of the first attachment portion 55 not only in the front-rear direction but also in the vertical direction.

  Here, as shown in FIG. 7B, the panel body 3 is configured such that the first mounting portion 55 is inserted into the insertion port 351 on the insertion path of the first mounting portion 55 to the first holding member 35 and in front of the insertion port 351. It further has a guide member 352 for guiding. That is, in this embodiment, since the first attachment portion 55 is inserted from the right side into the insertion port 351 of the first holding member 35, the guide member 352 is provided on the right side of the insertion port 351.

  The guide member 352 is made of metal and has a plate shape protruding forward from the first holding member 35. Here, the guide member 352 is integrated with the first holding member 35 and has a shape extending forward from the peripheral edge of the insertion port 351 on the right side surface of the first holding member 35. The guide member 352 includes an inclined piece 353 that protrudes diagonally right forward from the first holding member 35, and a standing piece 354 that protrudes forward along the front-rear direction from the tip edge of the inclined piece 353. As a result, when the first attachment portion 55 is pushed diagonally to the left and the front edge of the first attachment portion 55 is in contact with the guide member 352 from the right side, the front edge of the first attachment portion 55 is moved to the guide member 352. It will move along and will be guided in the insertion port 351.

  As shown in FIG. 7A, the second holding member 36 is provided in the board body 3 and on the right side of the storage space (the first storage space S1 or the second storage space S2). The second holding member 36 is provided on the frame (vertical frame 32A). Here, the position of the second holding member 36 in the vertical direction is determined according to the position of the second attachment portion 56 of the storage battery unit 5 in the state of being stored in the storage space. Specifically, the height from the upper surface of the base body 341 of the support base 34 to the second holding member 36 substantially matches the height from the lower surface of the storage battery unit 5 to the second mounting portion 56. Details of the second attachment portion 56 will be described in the section “(2.3) Storage battery unit”. In the present embodiment, since the first mounting portion 55 and the second mounting portion 56 have the same vertical position, the first holding member 35 and the second holding member 36 have the same vertical position. is there.

  The second holding member 36 is configured to be divided into two parts in the front-rear direction so as to restrict the movement of the second attachment part 56 in the front-rear direction and the slide direction by sandwiching the second attachment part 56 from both sides in the front-rear direction. Has been. Specifically, as shown in FIG. 7C, the second holding member 36 is second attached between the base 361 fixed to the vertical frame 32 </ b> A and the base 361 by being attached to the base 361 from the front. And a fastener 362 for holding the portion 56. A recess 363 that avoids interference with the second attachment portion 56 is formed on the surface (rear surface) of the fastener 362 facing the base 361. Thus, in a state where the fastener 362 is attached to the pedestal 361, the second attachment portion 56 is held in a gap formed between the front surface of the pedestal 361 and the rear surface of the fastener 362 by the concave portion 363 of the fastener. Will be. In the present embodiment, the second holding member 36 restricts the movement of the second mounting portion 56 not only in the front-rear direction and the sliding direction but also in the vertical direction. Here, the fastener 362 is screwed to the pedestal 361. However, the present invention is not limited to this configuration, and the fastener 362 may be fixed to the pedestal 361 by other fixing methods.

  Here, the movement of the second attachment portion 56 in the sliding direction is not regulated by the second holding member 36 alone, but is regulated by the first holding member 35 and the second holding member 36 in cooperation. . That is, the first attachment portion 55 and the second attachment portion 56 are provided so as to protrude on both the left and right sides of the storage battery unit 5, and the respective leading end portions are inserted into the first holding member 35 and the second holding member 36. To be held. Therefore, in a state where the first mounting portion 55 is held by the first holding member 35 and the second mounting portion 56 is held by the second holding member 36, the first holding member 35 moves the first mounting portion 55 to the left. The movement of the first attachment portion 55 is restricted, and the second holding member 36 restricts the movement of the second attachment portion 56 to the right. Thereby, the movement of the 2nd attachment part 56 to a slide direction (left side and right side) is controlled.

  By the way, the storage board 2 of this embodiment is further provided with the insulating member 390 (refer FIG. 9A) which has electrical insulation. The insulating member 390 is disposed between the first holding member 35 and the first mounting portion 55 and between the second holding member 36 and the second mounting portion 56, respectively. Thereby, the 1st holding member 35 and the 1st attaching part 55 are electrically insulated, and the 2nd holding member 36 and the 2nd attaching part 56 are electrically insulated. Therefore, in a state where the storage battery unit 5 is held by the first holding member 35 and the second holding member 36, the storage panel 2 and the housing 51 of the storage battery unit 5 are electrically insulated.

  In the present embodiment, both the first attachment portion 55 and the second attachment portion 56 are not completely fixed, but are in a state where the movable range is limited while leaving “play”. , Movement is regulated. In other words, the first holding member 35 can regulate the movement of the first mounting portion 55 in the front-rear direction while having an appropriate gap between the first holding member 35 and the first mounting portion 55. Similarly, the second holding member 36 can restrict the movement of the second mounting portion 56 in the front-rear direction and the sliding direction while having an appropriate gap between the second holding member 36 and the second mounting portion 56. This prevents the first holding member 35 from crushing the insulating member 390 between the first mounting portion 55 and the electrical insulation between the first holding member 35 and the first mounting portion 55. Reduction can be suppressed. The same applies to the electrical insulation between the second holding member 36 and the second mounting portion 56.

  By the way, as shown in FIG. 2, the distance from the storage space (the first storage space S1 or the second storage space S2) in the slide direction to the inner surface of the panel body 3 is the second holding than the first holding member 35 side. The member 36 side is larger. That is, the distance L12 from the storage space on the second holding member 36 side to the right inner surface of the panel body 3 is compared with the distance L11 from the storage space on the first holding member 35 side to the left inner surface of the panel body 3. Large (L11 <L12). In other words, the storage space for storing the storage battery unit 5 is disposed in the panel main body 3 so as to be closer to the first holding member 35 side (left side in the present embodiment) in the sliding direction.

  Therefore, in the state in which the storage battery unit 5 is attached (stored) to the storage panel 2, the distance from the side surface of the housing 51 of the storage battery unit 5 to the inner surface of the panel body 3 is as follows. . That is, the distance L12 from the side surface on the second holding member 36 side (right side surface in this embodiment) to the inner side surface of the panel body 3 in the housing 51 is the side surface on the first holding member 35 side in the housing 51 (this embodiment). In the embodiment, the distance is greater than the distance L11 from the left side surface) to the inner side surface of the panel body 3. In the present embodiment, the first holding member 35 is provided at a position corresponding to the left side surface of the housing 51 in a state where the storage battery unit 5 is attached to the storage panel 2, and corresponds to the right side surface of the housing 51. The 2nd holding member 36 is provided in the position to perform. Accordingly, the distance from the second holding member 36 to the inner side surface (right inner side surface in the present embodiment) of the panel main body 3 is from the first holding member 35 to the inner side surface (left inner side surface in the present embodiment) of the panel main body 3. Greater than the distance.

  Here, the panel main body 3 is a gap between the storage space (the first storage space S1 or the second storage space S2) in the sliding direction and the inner surface of the panel main body 3, and is a gap on the second holding member 36 side. In addition, a passage space S4 through which the electric wire passes is provided. That is, a through space S4 for passing an electric wire is formed on the right side of the storage space for storing the storage battery unit 5. As described above, since the storage space is arranged closer to the first holding member 35 side in the sliding direction (left side in the present embodiment) in the panel body 3, the larger one of the gaps on both sides of the storage space. The gap is used as the line space S4. Of the gaps on both sides of the storage space, the wider gap (the gap on the second holding member 36 side) has a size that allows a human hand to enter, and the narrower gap (first gap among the gaps on both sides of the storage space). The gap on the holding member 35 side is preferably large enough to prevent human hands from entering.

  Furthermore, the first holding member 35 located on the left side of the second storage space S2 is located in front of the first holding member 35 located on the left side of the first storage space S1. Similarly, the second holding member 36 positioned on the right side of the second storage space S2 is positioned forward of the second holding member 36 positioned on the right side of the first storage space S1 (see FIG. 1). . The procedure for attaching the storage battery unit 5 to the storage panel 2 will be described in the column “(2.5) Installation procedure of storage battery unit”.

  As shown in FIG. 1, the heater unit 6 is stored in the third storage space S3. The heater unit 6 is an AC drive device in which a heater and a fan are integrally formed, and is configured such that air heated by the heater is discharged to the outside through the fan. The heater unit 6 is stored in the third storage space S3 in a state in which the air blowing direction is a direction orthogonal to the vertical direction (backward in the present embodiment).

  A wind direction panel 37 is provided in the panel main body 3 and behind the third storage space S3. The wind direction panel 37 is a metal plate. The wind direction panel 37 includes an inclined wall 371, a first attachment piece 372, and a second attachment piece 373. The first attachment piece 372 protrudes forward from the front end edge of the inclined wall 371, and the second attachment piece 373 protrudes upward from the rear end edge of the inclined wall 371. The wind direction panel 37 is attached to the panel block 31 by the first attachment piece 372 being screwed to the second panel 312 of the panel block 31 and the second attachment piece 373 being screwed to the fifth panel 315. .

  In the state where the wind direction panel 37 is attached to the panel block 31, as shown in FIG. 1, the heater unit 6 and the wind direction panel 37 face each other in the front-rear direction. Further, the inclined wall 371 of the wind direction panel 37 is inclined so that the surface facing the heater unit 6 is obliquely upward. In this configuration, the direction of the wind from the heater unit 6 is changed from backward to upward by hitting the inclined wall 371 of the wind direction panel 37 (see arrow A1 in FIG. 1). Here, in the present embodiment, the heater unit 6 and the inclined wall 371 of the wind direction panel 37 constitute a blower, and the heater unit 6 is a fan.

  As shown in FIGS. 1 to 5, a mounting base 41 for fixing the board body 3 to the floor is attached to the lower part of the board body 3 described above. The mounting base 41 is made of metal. The mounting base 41 is formed in a rectangular frame shape by combining the first member 411, the second member 412, the third member 413, and the fourth member 414 having a U-shaped cross section perpendicular to the longitudinal direction. (See FIG. 4C). On the lower surface of the first member 411, a plurality (four in FIG. 4C) of insertion holes 411A through which anchor bolts installed on the floor are inserted are provided at equal intervals in the left-right direction. In addition, a plurality (four in FIG. 4C) of insertion holes 412A through which anchor bolts are inserted are also provided in the lower surface of the second member 412 at equal intervals in the left-right direction.

  The lid 4 is made of metal and is formed in a flat rectangular box shape. The outer dimensions (vertical dimension and horizontal dimension) of the lid 4 are set to be slightly larger than the opening dimension of the opening 30 of the panel body 3. The lid 4 is screwed to the board body 3 in a state in which the opening 30 formed on the front surface of the board body 3 is closed.

(2.3) Storage Battery Unit As shown in FIGS. 9A to 9C, the storage battery unit 5 includes a casing 51 formed in a rectangular parallelepiped shape and a storage battery 50 (see FIG. 8) housed in the casing 51. ing. The casing 51 includes a rectangular box-shaped body 52 having an open front surface, and a cover 53 attached to the body 52 so as to close the opening of the body 52. The cover 53 includes a cover main body 531 that closes the opening of the body 52 and an attachment piece 532 that protrudes rearward from the upper end edge of the cover main body 531. In the storage battery unit 5 of this embodiment, the cover 53 is attached to the body 52 so as to close the opening of the body 52, and the housing 51 is assembled by screwing from above through the attachment piece 532.

  A first attachment portion 55 and a second attachment portion 56 are attached to the rear surface of the body 52. At least one of the first attachment portion 55 and the second attachment portion 56 has a plate shape extending in the left-right direction along the rear surface of the storage battery unit 5.

  In the present embodiment, the first attachment portion 55 is made of metal. The first attachment portion 55 is formed in a rectangular plate shape, and is attached to the body 52 with at least one end portion in the left-right direction protruding outward (left side) from the left side surface of the body 52. In addition, two first attachment portions 55 are attached to one casing 51 with a space in the vertical direction. The second attachment portion 56 is made of metal, like the first attachment portion 55. The second attachment portion 56 is formed in a rectangular plate shape, and is attached to the body 52 with at least one end portion in the left-right direction protruding outward (right side) from the right side surface of the body 52. Similarly to the first attachment portion 55, two second attachment portions 56 are attached to one casing 51 with a space in the vertical direction.

  Here, the interval between the two first mounting portions 55 arranged in the vertical direction is the same as the interval between the two first holding members 35 provided in the storage space (the first storage space S1 or the second storage space S2). It is. Further, the interval between the two second mounting portions 56 arranged in the vertical direction is the same as the interval between the two second holding members 36 provided in the storage space. Of the first attachment portion 55 and the second attachment portion 56, a portion protruding from the side surface of the body 52 is covered with an insulating member 390 as shown by an imaginary line (two-dot chain line) in FIG. 9A. With the insulating member 390, the storage panel 2 and the housing 51 of the storage battery unit 5 are electrically insulated while the storage battery unit 5 is held by the first holding member 35 and the second holding member 36.

(2.4) Positional relationship of storage battery units By the way, in the structure in which a plurality of storage battery units 5 are arranged side by side in the vertical direction as in the storage panel 2 of the present embodiment, the plurality of storage battery units 5 are in the front-rear direction (depth direction). If the storage battery unit 5 is attached at the same position, the workability when attaching the storage battery unit 5 may be lowered. In particular, when the cover 53 is screw-fixed to the body 52 from above like the storage battery unit 5 of the present embodiment, the cover 53 can be attached and detached if the distance between the storage battery units 5 adjacent in the vertical direction is short. It may not be possible.

  Therefore, in the storage panel 2 of the present embodiment, as shown in FIG. 1, the first storage battery unit 5A and the second storage battery unit 5B are arranged so that the first storage battery unit 5A is closer to the lid body 4 than the second storage battery unit 5B. The position of is shifted in the front-rear direction. In other words, the distance from the first storage battery unit 5A to the lid body 4 is shorter than the distance from the second storage battery unit 5B to the lid body 4. In addition, 5 A of 1st storage battery units are the storage battery units 5 of the lower side among the two storage battery units 5 adjacent to an up-down direction (vertical direction). Moreover, the 2nd storage battery unit 5B is the storage battery unit 5 of the upper side among the two storage battery units 5 adjacent to an up-down direction (vertical direction).

  Specifically, the upper support bar 33 and the support base 34 that support the second storage battery unit 5B are located behind the lower support bar 33 and the support base 34, as shown in FIG. On the other hand, the lower support bar 33 and the support base 34 to which the first storage battery unit 5A is attached are in front of the upper support bar 33 and the support base 34 as shown in FIG. Then, in a state where the first storage battery unit 5A and the second storage battery unit 5B are placed on the corresponding support bases 34, the lower first storage battery unit 5A is in front and the upper second storage battery unit 5B is in rear. Each is stored in the storage board 2 in a state of being positioned.

  In this case, like the storage battery unit 5 of the present embodiment, the cover 53 can be easily attached and detached even if the cover 53 is screwed from above. That is, in the storage panel 2 of this embodiment, the workability | operativity at the time of attaching / detaching the cover 53 of the storage battery unit 5 can be improved compared with the case where the some storage battery unit 5 is arrange | positioned in the same position in the front-back direction. Moreover, like the storage panel 2 of this embodiment, the direction in which the position of the storage battery unit 5 is shifted is in the normal direction of the surface having the largest surface area among the four surfaces of the housing 51 of the storage battery unit 5 parallel to the vertical direction. In some cases, the heat dissipation efficiency of the heat generated in the storage battery unit 5 can be increased.

  Moreover, in the storage board 2 of this embodiment, as shown in FIG. 1, it is preferable that the distance L2 is shorter than the distance L1. The distance L1 is a distance between the second storage battery unit 5B on the upper side in the vertical direction (vertical direction) and the upper surface (first panel 311) of the panel body 3. The distance L2 is a distance between the lower end of the support member that supports the upper second storage battery unit 5B (the lower end of the support bar 33) and the lower first storage battery unit 5A. Furthermore, in the storage board 2 of this embodiment, it is more preferable that the distance L3 is shorter than the distance L1. The distance L3 is a distance between the first storage battery unit 5A and the second storage battery unit 5B adjacent in the up-down direction (vertical direction). Thereby, the storage panel 2 can be downsized in the vertical direction (up and down direction) while improving the workability when the cover 53 is attached and detached.

  Moreover, in the storage board 2 of this embodiment, as shown in FIG.1 and FIG.2, the heater unit 6 and the wind direction panel 37 are set in 3rd storage space S3 which is a space below the lower 1st storage battery unit 5A. The ventilation part which consists of is accommodated. The air discharged from the heater unit 6 moves backward, but moves upward after hitting the inclined wall 371 of the wind direction panel 37 (see arrow A1 in FIG. 1). Further, the air hitting the inclined wall 371 moves upward in the space behind the first storage battery unit 5A (see arrow A2 in FIG. 1), and then between the first storage battery unit 5A and the second storage battery unit 5B. Is moved forward (see arrow A3 in FIG. 1). The air that has moved forward between the first storage battery unit 5A and the second storage battery unit 5B further moves upward in the space on the front side of the second storage battery unit 5B (see arrow A4 in FIG. 1). Thereby, the air in the storage board 2 can be moved. And when the direction of the wind from a ventilation part is upward like the storage board 2 of this embodiment, the efficiency of a convection can be improved.

(2.5) Procedure for Attaching Storage Battery Unit Next, a procedure for attaching the storage battery unit 5 to the storage panel 2 will be described with reference to FIGS. 10A to 11B. Here, the case where the storage battery unit 5B is stored in the first storage space S1 will be described as an example, but the same procedure is performed when the storage battery unit 5A is stored in the second storage space S2. 10A to 11B, the panel block 31 is not shown so that the inside of the storage board 2 can be easily understood, and the outline of the storage board 2 is indicated by an imaginary line (two-dot chain line).

  As shown in FIG. 10A, the operator places the storage battery unit 5 on the base body 341 of the support base 34 in a state where the storage battery unit 5 is tilted so that the front surface of the storage battery unit 5 faces diagonally to the left. At this time, the storage board 2 is in a state in which the lid 4 is removed from the board body 3.

  Thereafter, the operator pushes the right end portion of the front surface of the storage battery unit 5 rearward, rotates the storage battery unit 5 in a horizontal plane around the left end edge of the front surface of the storage battery unit 5, and as shown in FIG. 10B, the storage battery unit 5 Is placed in the panel body 3. At this time, the storage battery unit 5 rotates counterclockwise in a plan view until the front surface faces the front, and the rear surface of the housing 51 comes into contact with the first stopper 342 as shown in FIG. Movement is restricted. In the state shown in FIG. 10B, the storage battery unit 5 is in a position slightly shifted to the right in the panel main body 3 from the first storage space S1. The insulating sheet 39 attached to the support base 34 is preferably made of a material having a small friction coefficient (for example, polycarbonate) so that the storage battery unit 5 can easily move.

  Further, the operator slides the storage battery unit 5 leftward as shown in FIG. 10C. Accordingly, the two first attachment portions 55 protruding leftward from the left side surface of the housing 51 are inserted into the corresponding first holding members 35. At this time, the guide member 352 guides the first mounting portion 55 to the insertion port 351, thereby simplifying the operation of inserting the first mounting portion 55 into the first holding member 35. That is, if the tip edge of the first attachment portion 55 is in contact with the guide member 352 from the right side, the operator pushes the storage battery unit 5 diagonally to the left and the tip edge of the first attachment portion 55 guides. It moves along the member 352 and is guided into the insertion port 351. Further, at this time, as shown in FIG. 11B, the storage battery unit 5 is restricted from moving leftward when the left side surface of the casing 51 comes into contact with the second stopper 343. That is, in the state shown in FIG. 10C, the storage battery unit 5 is positioned in the front-rear direction and the left-right direction, and the storage battery unit 5 is stored in the first storage space S1.

  Thereafter, the worker holds the two second attachment portions 56 protruding rightward from the right side surface of the housing 51 by the corresponding second holding members 36, whereby the attachment of the storage battery unit 5 is completed. At this time, the two second attachment portions 56 are held by the second holding member 36 by being sandwiched between the base 361 and the fastener 362 of the corresponding second holding member 36. Thereafter, the operator connects the electric wires (the first electric wires 43 </ b> A, etc.) and attaches the lid body 4 to the panel body 3.

(2.6) Connection of Storage Panels As shown in FIG. 12A, the storage panel 2 of the present embodiment can be installed (connected) by arranging two storage panels 2 in the left-right direction. In this case, after the fasteners 44 are respectively removed from the third panel 313 of the left storage panel 2 and the fourth panel 314 of the right storage panel 2, and the third panel 313 and the fourth panel 314 are brought into contact with each other, The third panel 313 and the fourth panel 314 are fastened by the fastener 44. Thereby, the two storage boards 2 can be installed in an integrally connected state. Moreover, it is also possible to install three or more storage boards 2 side by side in the same manner by the same procedure.

  Here, in one storage board 2, a plurality of storage spaces (first storage space S1 and second storage space S2) are provided so as to be arranged in the vertical direction (vertical direction). And the connection structure 440 is comprised so that the board main body 3 and the other storage board 2 which are located in a direction orthogonal to a perpendicular direction may be connected. That is, a single storage panel 2 can store a plurality of storage battery units 5 side by side in the vertical direction (up and down direction), and a plurality of such storage panels 2 can be connected in the horizontal direction (left and right direction). is there. Therefore, if the number of storage spaces provided in one storage panel 2 in the vertical direction is “M” and the number of storage panels 2 connected in the horizontal direction to form the panel system is “N”, As a system, a maximum of M × N storage battery units 5 can be stored. As a result, the panel system can increase the number of storage battery units 5 to a maximum of M × N, and can realize a scalable system that can flexibly adapt to the expansion of the storage battery capacity.

  In the present embodiment, as shown in FIG. 12B, the connection structure 440 is a fastener that connects panels (third panel 313 and fourth panel 314) that are the outer plates of the other storage panel 2 and the panel body 3. The structure is fastened at 44. That is, the connection structure 440 includes the fastener 44 and the through holes 45 of the third panel 313 and the fourth panel 314.

  Specifically, the third panel 313 and the fourth panel 314 are formed with through holes 45 that are continuous when the two storage boards 2 are arranged in the left-right direction. The fastener 44 includes a bolt (male screw) 441 and a nut (female screw) 442, and the bolt 441 and the nut 442 are tightened through the through hole 45 to fasten the third panel 313 and the fourth panel 314. At this time, the third panel 313 and the fourth panel 314 are clamped by being sandwiched between the head of the bolt 441 and the nut 442. When the plurality of storage boards 2 are not connected, the fastener 44 is attached to the third panel 313 or the fourth panel 314 of one storage board 2 so as to close the through holes 45.

  Furthermore, the storage board 2 can be installed (connected) side by side in the left-right direction with respect to the power converter 8. That is, the storage panel 2 that is the housing of the power storage device 1 and the housing 86 of the power conversion device 8 can be connected. Therefore, it is preferable that the storage panel 2 and the casing 86 be unified in appearance. For example, the storage board 2 and the casing 86 are configured to have the same height from the floor surface.

  In addition, fixing brackets for fixing the storage board 2 to the wall may be attached to the upper surfaces of the plurality of storage boards 2, respectively. In this structure, since the some storage board 2 is fixed to a wall, earthquake resistance can be improved. Further, in order to further improve the earthquake resistance, a connecting fitting for connecting a plurality of fixing brackets attached to the plurality of storage boards 2 may be further attached.

(2.7) Power Conversion System Hereinafter, the power conversion system 80 of the present embodiment will be described with reference to FIG. The power conversion system 80 of this embodiment includes a mounting base 87 and a plurality (two in this embodiment) of power conversion devices 8. A plurality (two in this embodiment) of (second) housings 86 are attached to the mounting base 87 side by side in the left-right direction. Each of the two casings 86 stores a power conversion unit. The power conversion unit referred to here is a unit that constitutes the power conversion device 8, and includes an inverter 81, a self-supporting control unit 82 (82A or 82B), a plurality of DC / DC converters 83, and DC / DC converters 84 and 85. Contains. That is, the power conversion device 8 is configured by housing the power conversion unit in the housing 86.

  In the power conversion system 80 of the present embodiment, since the plurality of power conversion devices 8 are mounted side by side on the mounting base 87, compared to the case where the plurality of power conversion devices 8 are separately installed on the ground, they are collected in one place. It is possible to build a system.

  As shown in FIG. 13, the housing 86 includes a first housing 861 and a second housing 862. Each of the first housing 861 and the second housing 862 is configured in a rectangular box shape with a metal plate. The first housing 861 is mounted on the second housing 862 and is coupled to the second housing 862 with, for example, bolts. That is, the first housing 861 and the second housing 862 are arranged in the vertical direction (vertical direction). The first casing 861 stores, for example, the inverter 81 and the like, and the second casing 862 stores, for example, the self-supporting control unit 82 and the like.

  By the way, when such a power converter device 8 or the power conversion system 80 and the electrical storage apparatus 1 (storage panel 2) are installed side by side in the left-right direction, it is preferable that the appearance can be unified as viewed from the front. Specifically, when the vertical dimensions of the storage board 2 and the housing 86 are different, a height adjustment base is attached to one of the storage board 2 and the housing 86, so that the storage board 2 and It is preferable that the height from the floor surface is aligned with the housing 86. For example, when the vertical dimension of the storage panel 2 is smaller than the casing 86, the height adjustment base is attached below the mounting base 41, so that the height from the floor surface between the storage panel 2 and the casing 86 is increased. Are aligned.

  When the dimensions of the storage panel 2 and the casing 86 are different in the front-rear direction, the storage panel 2 and the casing 86 are installed so that the front surface of the storage panel 2 and the front surface of the casing 86 are flush with each other. It is preferred that For example, when the storage panel 2 and the casing 86 are installed near the wall, the distance from the wall to the rear surface of the storage panel 2 is made different from the distance from the wall to the rear surface of the casing 86 so that the front surface becomes surface. Become one. Therefore, when a fixing bracket for fixing the storage panel 2 and the casing 86 to the wall is attached to the upper surface of each of the storage panel 2 and the casing 86, the fixing bracket is formed by the storage panel 2 and the casing 86. It is preferable that the dimensions in the front-rear direction are different. For example, when the dimension of the storage board 2 in the front-rear direction is larger than that of the casing 86, the dimension of the fixing bracket for the storage panel 2 closer to the wall is smaller than the dimension of the fixing bracket for the casing 86.

(3) Effect As described above, in the storage panel 2 of the present embodiment, a plurality of storage battery units 5 are provided by a plurality of storage spaces (first storage space S1, second storage space S2) provided in the panel body 3. Can be stored in one storage panel 2. The plurality of storage battery units 5 are integrated by being stored in one storage panel 2, and can be handled as one device. Further, the storage board 2 is connected to another storage board 2 by a connection structure 440 provided in the board body 3 to constitute a board system. Therefore, in the panel system, a plurality of storage panels 2 each capable of storing a plurality of storage battery units 5 can be integrated and handled as one device. Therefore, according to the storage panel 2 of this embodiment, the number of the storage battery units 5 can be increased as necessary, and there is an advantage that a scalable panel system that can be flexibly adapted to the expansion of the storage battery capacity can be realized. is there.

  Further, as in the present embodiment, the plurality of storage spaces (the first storage space S1 or the second storage space S2) are provided so as to be arranged in the vertical direction, and the connection structure 440 is arranged in a direction orthogonal to the vertical direction. It is preferable that the lined board body 3 and the other storage board 2 are connected to each other. According to this configuration, the storage battery unit 5 is two-dimensionally arranged in the vertical direction and in the direction orthogonal to the vertical direction (the left-right direction in the present embodiment). Therefore, space can be used more effectively than when the storage battery units 5 are arranged in one direction. However, this configuration is not an essential configuration for the storage panel 2. For example, the connection structure 440 may be configured to connect the panel body 3 and the other storage panel 2 in the vertical direction.

  Further, as in the present embodiment, the connection structure 440 is configured such that the panels (third panel 313 and fourth panel 314) that are the outer plates of the other storage panel 2 and the panel body 3 are connected to each other by the fasteners 44. It is preferable that the structure is fastened. According to this configuration, since the panels are directly fastened by the fasteners 44, the connection structure 440 is realized with a relatively simple structure. However, this configuration is not an essential configuration for the storage board 2, and the connection structure 440 may be realized by adhesion or welding, for example.

  Further, as in the present embodiment, the panel body 3 is preferably a box-like shape having an opening 30 formed on the front surface, and further includes a lid 4 attached to the panel body 3 so as to close the opening 30. . According to this configuration, the storage battery unit 5 can be attached to and detached from the panel main body 3 through the opening 30, and the storage battery unit 5 can be covered with the lid 4. However, this configuration is not essential for the storage board 2, and the lid 4 may be omitted.

  Further, as in the present embodiment, the board body 3 further includes a support base 34 that is disposed below each of the plurality of storage spaces (the first storage space S1 or the second storage space S2) and places the storage battery unit 5 thereon. It is preferable to be provided. In this case, it is preferable that the storage board 2 further includes an insulating sheet 39 that is disposed so as to cover the upper surface of the support base 34 and has electrical insulation. According to this configuration, when the storage battery unit 5 is attached to the storage panel 2, the storage battery unit 5 can be slid on the support base 34 while the storage battery unit 5 is placed on the support base 34. The workability of replacement and expansion work is improved. In addition, the support base 34 and the storage battery unit 5 can be electrically insulated while the storage battery unit 5 is placed on the support base 34. Therefore, for example, the casing 51 of the storage battery unit 5 can be grounded without using the storage panel 2, and the storage panel 2 and the casing 51 of the storage battery unit 5 can be grounded individually. Moreover, if the insulating sheet 39 having a smaller friction coefficient than that of the support base 34 is employed, there is an advantage that the operation of sliding the storage battery unit 5 on the support base 34 becomes easy. However, this configuration is not essential for the storage board 2, and the support base 34 and the insulating sheet 39 may be omitted.

  Further, as in the present embodiment, the panel body 3 includes a storage space (first storage space S1, second storage space S2) for storing the storage battery units 5 (5A, 5B), a first holding member 35, and a second storage member. It is preferable to have the holding member 36. In this case, the 1st holding member 35 and the 2nd holding member 36 are arrange | positioned away in the sliding direction which cross | intersects the front-back direction in a horizontal surface, and hold | maintains the storage battery unit 5 in storage space. In the first holding member 35, the first mounting portion 55 (see FIG. 11A) provided in the storage battery unit 5 moves in the sliding direction with respect to the first holding member 35, and the first mounting portion 55 and the first holding member 35 are moved. The movement of the first mounting portion 55 in the front-rear direction is restricted with one of the two inserted into the other. The 2nd holding member 36 is comprised so that the movement of the 2nd attaching part 56 to the front-back direction and a sliding direction may be controlled by hold | maintaining the 2nd attaching part 56 provided in the storage battery unit 5 so that attachment or detachment is possible. Yes.

  According to this configuration, the movement of the first attachment portion 55 in the front-rear direction can be regulated by the first holding member 35 by moving the storage battery unit 5 in the sliding direction relative to the panel main body 3. The storage board 2 holds the second mounting portion 56 with the second holding member 36 in a state where the movement of the first mounting portion 55 in the front and rear direction is restricted by the first holding member 35. And the movement of the 2nd attachment part 56 to a slide direction can be controlled. Therefore, according to the storage panel 2 of the present embodiment, the storage battery unit 5 is attached to the storage panel 2 simply by moving the storage battery unit 5 in the sliding direction and holding the second mounting portion 56 by the second holding member 36. be able to. For example, as compared with a configuration in which the first mounting portion 55 is screwed to the first holding member 35, the work for holding the first mounting portion 55 on the first holding member 35 is simplified. Therefore, in the storage panel 2 of this embodiment, there exists an advantage that replacement | exchange and expansion work of the storage battery unit 5 become easy.

  Moreover, it is preferable that at least one of the 1st attachment part 55 and the 2nd attachment part 56 is plate shape extended along the rear surface of the storage battery unit 5 like this embodiment. According to this configuration, the shape of at least one of the first attachment portion 55 and the second attachment portion 56 can be simplified. However, this configuration is not essential for the storage board 2, and the first mounting portion 55 and the second mounting portion 56 may not be plate-shaped.

  Further, as in the present embodiment, the first holding member 35 is preferably formed with an insertion port 351 into which the first mounting portion 55 is inserted. In this case, the panel body 3 is a guide member that guides the first mounting portion 55 to the insertion port 351 on the insertion path of the first mounting portion 55 to the first holding member 35 and before the insertion port 351. It is preferable to further include 352. According to this configuration, the guide member 352 guides the first attachment portion 55 to the insertion port 351, thereby simplifying the operation of inserting the first attachment portion 55 into the first holding member 35. However, this configuration is not essential for the storage board 2, and the guide member 352 may be omitted.

  Furthermore, in this case, it is preferable that the guide member 352 has a plate shape protruding forward from the first holding member 35. According to this configuration, when the storage battery unit 5 is attached to the storage panel 2, when the first attachment portion 55 is detached from the insertion port 351 and inserted into the space in front of the guide member 352, the housing of the storage battery unit 5. 51 is inclined with respect to the front surface of the storage board 2. That is, in a state where the first attachment portion 55 is not in the insertion port 351, the casing 51 of the storage battery unit 5 is inclined, so that the operator can easily notice. Therefore, for example, even in a situation where the first attachment portion 55 and the first holding member 35 are not visible, mistakes in attachment of the storage battery unit 5 to the storage board 2 can be reduced. However, this configuration is not essential for the storage board 2, and the guide member 352 may be, for example, a plate shape that protrudes rearward from the first holding member 35.

  Further, as in the present embodiment, the distance from the storage space (the first storage space S1 or the second storage space S2) in the slide direction to the inner surface of the panel body 3 is the second holding than the first holding member 35 side. The member 36 side is preferably larger. According to this configuration, on the side of the first holding member 35 that can hold the first mounting portion 55 only by sliding the storage battery unit 5, the distance to the inner side surface of the panel body 3 is kept small, so that the panel body 3 The dimension in the sliding direction can be kept as small as possible. In addition, the second holding member 36 holds the second mounting portion 56 with the second holding member 36 because a larger distance to the inner surface of the panel body 3 is ensured than the first holding member 35 side. A working space can be secured. Therefore, there is an advantage that the dimensions in the sliding direction of the panel body 3 can be suppressed as small as possible while ensuring the workability of the replacement and expansion work of the storage battery unit 5. However, this configuration is not an essential configuration for the storage panel 2. For example, the distance from the storage space in the sliding direction to the inner surface of the panel body 3 may be the same on the first holding member 35 side and the second holding member 36 side. Good.

  Further, in this case, the panel body 3 is a gap between the storage space (the first storage space S1 or the second storage space S2) in the sliding direction and the inner side surface of the panel body 3, and includes the second holding member 36. It is preferable that a through space S4 through which the electric wire passes is provided in the gap on the side. According to this configuration, since the work space for holding the second mounting portion 56 by the second holding member 36 can be used as the through space S4, the space in the panel body 3 can be used effectively, and wiring work can be performed. Will also be easier. However, this configuration is not an essential configuration for the storage board 2, and the line space S4 may be omitted.

  Further, as in the present embodiment, the panel main body 3 includes a panel (first to fifth panels 311 to 315) surrounding the storage space (the first storage space S1 or the second storage space S2), and an inner surface of the panel. It is preferable to have fixed frames (vertical frame 32A, horizontal frame 32B). In this case, the first holding member 35 and the second holding member 36 are preferably provided on the frame (the vertical frame 32A in the present embodiment). According to this configuration, the storage battery unit 5 can be firmly held by the first holding member 35 and the second holding member 36 as compared with the case where the first holding member 35 and the second holding member 36 are provided on the panel. However, this configuration is not an essential configuration for the storage board 2, and for example, at least one of the first holding member 35 and the second holding member 36 may be provided on the panel.

  Further, as in the present embodiment, the panel main body 3 is disposed behind the storage space (the first storage space S1 or the second storage space S2), and comes into contact with the rear surface of the storage battery unit 5 to thereby move the storage battery unit to the rear. It is preferable to have a movement restricting member (first stopper 342) that restricts the movement of 5. According to this configuration, when the storage battery unit 5 is attached to the storage panel 2, the storage battery unit 5 can be positioned in the front-rear direction by pressing the storage battery unit 5 against the movement restriction member. Therefore, the operation for holding the first mounting portion 55 by the first holding member 35 is facilitated by moving the storage battery unit 5 in the sliding direction with the storage battery unit 5 positioned in the front-rear direction. However, this configuration is not essential for the storage board 2, and the stopper (first stopper 342) may be omitted.

  Further, as in the present embodiment, the storage board 2 is disposed between the first holding member 35 and the first mounting portion 55 and between the second holding member 36 and the second mounting portion 56, respectively. It is preferable to further include an insulating member 390 having insulating properties. According to this configuration, in a state where the storage battery unit 5 is held by the first holding member 35 and the second holding member 36, the storage panel 2 and the housing 51 of the storage battery unit 5 can be electrically insulated. become. Therefore, for example, the casing 51 of the storage battery unit 5 can be grounded without using the storage panel 2, and the storage panel 2 and the casing 51 of the storage battery unit 5 can be grounded individually. However, this configuration is not essential for the storage board 2, and the insulating member 390 may be omitted.

  Further, like the storage panel 2 of the present embodiment, the support members (the support bar 33 and the support base 34) are plural in a state where the positions of the plurality of storage battery units 5 are shifted in a direction (front-rear direction) perpendicular to the vertical direction. It is preferable to hold the storage battery unit 5. According to this configuration, since the positions of the plurality of storage battery units 5 are shifted in a direction orthogonal to the vertical direction, the cover 53 of the storage battery unit 5 is screwed to the body 52 from above as in this embodiment. Even if the structure is such that the cover 53 can be attached and detached easily. Therefore, it is easier to attach and detach the cover 53 than when a plurality of storage battery units 5 are arranged at the same position in the direction orthogonal to the vertical direction, and the workability when attaching the storage battery units 5 to the storage panel 2 is improved. be able to. Further, the plurality of storage battery units 5 are distributed and arranged in a direction orthogonal to the vertical direction, and as a result, heat can be evenly radiated from both surfaces of the storage board 2 in the direction orthogonal to the vertical direction.

  Moreover, it is preferable that the housing | casing 51 is a rectangular parallelepiped like the storage board 2 of this embodiment. In this case, the support member holds the plurality of storage battery units 5 in a state where the positions of the plurality of storage battery units 5 are shifted in the normal direction of the surface having the largest surface area among the four surfaces of the casing 51 parallel to the vertical direction. It is preferable to be configured to do so. According to this configuration, since the heat dissipation amount increases in proportion to the surface area, the heat dissipation generated by the storage battery unit 5 is dissipated by shifting the position of the storage battery unit 5 in the normal direction of the surface of the casing 51 having a large surface area. Efficiency can be increased.

  Moreover, like the storage panel 2 of the present embodiment, the holding member has a plurality of storage battery units 5 (5A) in a state where the first storage battery unit 5A is displaced so that the first storage battery unit 5A is closer to the lid body 4 than the second storage battery unit 5B. , 5B). The first storage battery unit 5 </ b> A is located on the lower side of the two storage battery units 5 adjacent in the vertical direction among the plurality of storage battery units 5. The second storage battery unit 5 </ b> B is located on the upper side of the two storage battery units 5 adjacent in the vertical direction among the plurality of storage battery units 5. According to this configuration, the cover 53 can be easily attached and detached even when the cover 53 of the storage battery unit 5 is screwed to the body 52 from above as in the present embodiment. Therefore, it is easier to attach the cover 53 than when a plurality of storage battery units 5 are arranged at the same position in the direction orthogonal to the vertical direction, and the workability when attaching the storage battery unit 5 to the storage panel 2 is improved. be able to.

  Further, like the storage board 2 of the present embodiment, the holding member is preferably configured to hold the plurality of storage battery units 5 in a state where the distance L2 is shorter than the distance L1. The distance L <b> 1 is a distance between the second storage battery unit 5 </ b> B located at the top of the plurality of storage battery units 5 and the upper surface (first panel 311) of the panel body 3. The distance L2 is a distance between the second storage battery unit 5B located at the top of the plurality of storage battery units 5 and the first storage battery unit 5A adjacent to the second storage battery unit 5B. According to this configuration, the storage panel 2 can be downsized in the vertical direction while improving the workability when the storage battery unit 5 is attached to the storage panel 2.

  Moreover, like the storage board 2 of this embodiment, the ventilation part (heater unit 6 and the wind direction panel 37) arrange | positioned in the space below the storage battery unit 5 located in the lowest among several storage battery units 5 Is preferably further provided. According to this structure, the air in the board main body 3 can be moved by a ventilation part, and heat can be moved in the board main body 3 by a convection.

  Moreover, it is preferable that the direction of the wind from a ventilation part is upward like the storage panel 2 of this embodiment. According to this structure, the air in the board main body 3 can be moved upward by sending wind from the lower side, and heat can be efficiently moved in the board main body 3 by convection.

  Moreover, like the storage panel 2 of the present embodiment, the air blowing unit is opposed to the fan (heater unit 6) arranged so that the direction orthogonal to the vertical direction is the air blowing direction, and the fan in the air blowing direction. It is preferable to have the inclined wall 371 arranged. In this case, the inclined wall 371 is preferably inclined so that the surface facing the fan is obliquely upward. According to this configuration, the direction of the wind generated by the fan can be made upward by the inclined wall 371, and the air in the panel body 3 is moved upward by sending wind from the lower side, and the panel body is moved by convection. The heat can be efficiently transferred within 3.

  The power storage device 1 of the present embodiment includes the storage panel 2 described above and the storage battery units 5 (5A, 5B) stored in the storage panel 2. According to this configuration, it is possible to provide the power storage device 1 that can be flexibly adapted to the expansion of the storage battery capacity by using the storage panel 2 described above.

  The power storage system of this embodiment includes the above-described power storage device 1 and a power conversion device 8 that converts the power of the power storage device 1. According to this configuration, it is possible to provide a power storage system that can be flexibly adapted to the expansion of the storage battery capacity by using the storage panel 2 described above.

(4) Modified Example The relationship between the first attachment portion 55 and the first holding member 35 may be a relationship opposite to that in the above embodiment. That is, the first holding member 35 is configured such that the movement of the first mounting portion 55 in the front-rear direction is restricted in a state where one of the first mounting portion 55 and the first holding member 35 is inserted into the other. If it is. Specifically, the first holding member 35 has a plate shape extending toward the second holding member 36, and an insertion port into which the first holding member 35 is inserted is formed in the first attachment portion 55, and the first attachment The first holding member 35 may be inserted into the portion 55.

  Further, the positional relationship between the first holding member 35 and the second holding member 36 may be the opposite relationship to the above embodiment. That is, the first holding member 35 may be provided on the right side of the storage space, and the second holding member 36 may be provided on the left side of the storage space.

  In addition, each of the first holding member 35 and the second holding member 36 has a configuration in which two are provided for one storage space (the first storage space S1 or the second storage space S2) as in the above embodiment. Not limited to this, one or three or more may be provided for one storage space. For example, when one first holding member 35 and one second holding member 36 are provided for one storage space, the storage battery unit 5 stored in one storage space has two holding members (first holding members). 35 and the second holding member 36). In a configuration in which two or more first holding members 35 and two second holding members 36 are provided for one storage space, each of the first holding member 35 and the second holding member 36 is provided for one storage space. The storage battery unit 5 can be easily fixed as compared with the configuration in which one is provided.

  Similarly, each of the first mounting portion 55 and the second mounting portion 56 is not limited to the configuration in which two are provided for one casing 51 as in the above embodiment, but one casing 51. 1 or 3 or more may be provided. For example, when the 1st holding member 35 and the 2nd holding member 36 are provided 1 each with respect to one storage space, the 1st attaching part 55 and the 2nd attaching part 56 are also with respect to the one housing | casing 51. One by one. In a configuration in which two or more first mounting portions 55 and two second mounting portions 56 are provided for one housing 51, the first mounting portion 55 and the second mounting portion are provided for one housing 51. The storage battery unit 5 can be easily fixed as compared with the configuration in which one of each 56 is provided.

  In the above embodiment, the first stopper 342 and the second stopper 343 are integrated with the support base 34 (the base body 341). However, the configuration is not limited to this, and at least one of the first stopper 342 and the second stopper 343 is used. However, the support 34 may be a separate body.

  In addition, the insulating member 390 is not limited to the configuration attached to the first attachment portion 55 and the second attachment portion 56 of the storage battery unit 5, but between the first holding member 35 and the first attachment portion 55, and the second holding member. What is necessary is just to be arrange | positioned between 36 and the 2nd attachment part 56, respectively. For example, the insulating member 390 may be attached to the first holding member 35 and the second holding member 36.

  Moreover, in the said embodiment, although the ventilation unit is comprised with the heater unit 6 and the wind direction panel 37 which incorporate a heater and a fan, you may comprise a ventilation part only with the heater unit 6, for example. In this case, the efficiency of heat transfer in the panel body 3 can be improved by adjusting the direction of the heater unit 6 so that the air blowing direction of the heater unit 6 is the vertical direction. Moreover, in the said embodiment, although the heater unit 6 incorporating a heater and a fan is used, only a fan may be sufficient.

  Furthermore, in the said embodiment, although the two storage battery units 5 are arranged in the perpendicular direction, you may comprise so that three or more storage battery units 5 may be arranged in a perpendicular direction. In this case, the position of the two storage battery units 5 is set in the front-rear direction so that the lower storage battery unit 5 of the two storage battery units 5 adjacent in the vertical direction is on the front side (the lid 4 side) of the upper storage battery unit 5. It is preferable to shift to

  Moreover, in the said embodiment, the position of the storage battery unit 5 is shifted to the normal line direction (front-back direction) of the surface with the largest surface area among the four surfaces of the housing | casing 51 parallel to a perpendicular direction. On the other hand, when it is not necessary to consider heat dissipation, the storage battery unit is arranged in the normal direction (left-right direction) of the remaining surface excluding the surface having the largest surface area among the four surfaces of the housing 51. The position of 5 may be shifted.

  Moreover, although the said embodiment demonstrated the storage battery unit 5 which accommodated one storage battery 50 in the housing | casing 51, the number of the storage batteries 50 accommodated in the housing | casing 51 is not restricted to one, A plurality may be sufficient. .

  In the above embodiment, the rib 315A is integrated with the fifth panel 315. However, the rib 315A may be formed separately from the fifth panel 315 and attached to the fifth panel 315.

  Further, when the plurality of storage boards 2 are installed (connected) in the left-right direction, there may be a gap between a pair of adjacent storage boards 2. That is, the plurality of storage boards 2 may be connected not only with no gap but also with a predetermined interval. Further, the plurality of storage boards 2 may be connected to each other using the mounting base 41. In this case, a plurality of storage boards 2 are mounted side by side on one mounting base 41.

  In the above embodiment, an example in which a plurality (two) of storage battery units 5 are stored in one storage panel 2 is shown, but the number of storage battery units 5 stored in the storage panel 2 is not limited to a plurality. It may be individual. Furthermore, at least a part of the power conversion device 8 such as the inverter 81 may be stored in the storage panel 2. In this case, the storage battery unit 5, the inverter 81, and the like are stored together in one storage panel 2.

DESCRIPTION OF SYMBOLS 1 Power storage device 2 Storage board 3 Panel main body 4 Cover body 5 Storage battery unit 5A 1st storage battery unit 5B 2nd storage battery unit 8 Power converter 30 Opening part 34 Support stand 39 Insulation sheet 44 Fastener 311-315 1st panel-5th Panel (Panel)
440 connecting structure S1 first storage space (storage space)
S2 Second storage space (storage space)

Claims (7)

A storage board used as one of the plurality of storage boards in a board system in which a plurality of storage boards are connected,
Each has a panel body having a plurality of storage spaces for storing storage battery units,
The board body is provided with a connection structure for connecting another board and the board body. The plurality of storage spaces are arranged in a vertical direction,
2. The storage board according to claim 1, wherein the connection structure is configured to connect the panel main body arranged in a direction orthogonal to the vertical direction and the other storage board.   3. The storage board according to claim 1, wherein the connection structure is a structure in which panels serving as outer plates of the other storage board and the board body are fastened with a fastener. 4. The panel body has a box shape with an opening formed on the front surface,
The storage board according to any one of claims 1 to 3, further comprising a lid attached to the board body so as to close the opening. The panel body is further provided with a support base that is disposed below each of the plurality of storage spaces and on which the storage battery unit is placed,
The storage board according to any one of claims 1 to 4, further comprising an insulating sheet that is disposed so as to cover an upper surface of the support base and has electrical insulation.   A power storage device comprising: the storage panel according to any one of claims 1 to 5; and the storage battery unit stored in the storage panel.   A power storage system comprising: the power storage device according to claim 6; and a power conversion device that converts electric power of the power storage device.

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