JP7392384B2 - Power storage device - Google Patents

Description

The present invention relates to a power storage device including a power storage element and a substrate.

Conventionally, power storage devices including a power storage element and a substrate are widely known. For example, Patent Document 1 discloses an assembled battery that outputs a desired voltage by connecting a plurality of unit cells (power storage elements) in series, and a battery that is housed in a board housing section and that outputs a desired voltage by connecting a plurality of unit cells (power storage elements) in series. A configuration (power storage device) including a control board (substrate) that controls an output voltage based on the above is disclosed.

Japanese Patent Application Publication No. 2013-51190

Since a power storage device including a power storage element is heavy, it may be difficult to move the power storage device. In particular, in a configuration in which a board accommodating part in which an assembled battery is housed is attached to the assembled battery like the conventional power storage device described above, the board accommodating part gets in the way and makes it impossible to grasp the power storage device, or the board accommodating part becomes difficult to grasp. This may result in a complicated structure for gripping the power storage device. For this reason, the inventors of the present application have found that in the above-mentioned conventional power storage device, it may be difficult to move the power storage device.

The present invention has been made in view of the above problems, and an object of the present invention is to provide a power storage device having a structure that can be easily moved.

In order to achieve the above object, a power storage device according to one embodiment of the present invention is a power storage device including a power storage unit having a power storage element, and a board electrically connected to the power storage unit; The power storage device includes a board accommodating portion for accommodating the power storage device, and includes a board unit attached to the power storage unit, and the board accommodating portion has a grip portion for gripping the power storage device.

According to this, the power storage device includes a power storage unit having a power storage element, and a board unit having a board and a board accommodating part and attached to the power storage unit, and the board accommodating part of the board unit is configured to hold the power storage device. It has a grip part for gripping. In this way, by providing the gripping section in the board housing section of the board unit, the power storage device cannot be gripped because the board unit gets in the way, or it becomes difficult to grip the power storage device while avoiding the board unit. There is no such thing as being lost. Thereby, the power storage device can be easily gripped using the gripping portion, so that the power storage device can be easily moved.

Further, the substrate unit may be attached to a longitudinal end of the power storage unit.

According to this, since the substrate unit is attached to the longitudinal end of the power storage unit, the grip portion is also attached to the longitudinal end of the power storage unit. Thereby, the power storage device, which is a heavy object, can be gripped in the longitudinal direction, so the power storage device can be stably gripped, and the power storage device can be easily moved.

Furthermore, at least a portion of the gripping portion may be arranged closer to the bottom of the power storage device than at least a portion of the power storage unit.

According to this, at least a portion of the gripping portion of the board unit is arranged closer to the bottom of the power storage device than at least a portion of the power storage unit, so that when an attempt is made to lift the power storage device by holding the gripping portion, etc. In addition, movement of the grip portion relative to the power storage unit is restricted. When the grip portion is restricted from moving relative to the power storage unit, the board unit is prevented from coming off from the power storage unit. In this way, when the power storage device is moved by holding the grip, it is possible to prevent the board unit from coming off the power storage unit, so the power storage device can be easily moved.

Further, the gripping portion may have a recessed portion recessed in a direction opposite to the power storage unit on a surface thereof facing the power storage unit.

According to this, by forming the recess on the surface of the gripping portion of the board unit on the power storage unit side, it is possible to easily insert a finger of a worker's hand between the gripping portion and the power storage unit. Therefore, the grip part can be easily gripped. Thereby, the power storage device can be easily held, so the power storage device can be easily moved.

Further, the gripping portion may have, on a surface facing the power storage unit, an inclined surface that slopes in a direction opposite to the power storage unit toward the bottom of the power storage device.

According to this, the inclined surface is formed on the surface of the gripping part of the board unit on the power storage unit side, thereby making it easier to insert the fingers of the worker's hand between the gripping part and the power storage unit. This makes it easier to grip the grip part. Thereby, the power storage device can be easily held, so the power storage device can be easily moved.

Note that the present invention can be realized not only as a power storage device, but also as a substrate accommodating portion having a grip portion, or a substrate unit having the substrate accommodating portion.

According to the power storage device of the present invention, it can be easily moved.

FIG. 1 is a perspective view showing the appearance of a power storage device according to an embodiment. FIG. 2 is a perspective view showing a configuration of a power storage device according to an embodiment separated into a power storage unit and a substrate unit. FIG. 3 is an exploded perspective view showing each component when the power storage unit according to the embodiment is disassembled. FIG. 2 is an exploded perspective view showing each component when the board unit according to the embodiment is disassembled. 1 is a perspective view, a cross-sectional view, and a side view showing the configuration of a substrate unit according to an embodiment. FIG. FIG. 2 is a cross-sectional view showing the configuration of a substrate unit according to an embodiment. FIG. 3 is a perspective view, a front view, and a side view showing the structure of the board unit according to the embodiment with the cover section open. FIG. 2 is a perspective view and a cross-sectional view showing the structure of the exterior body support according to the embodiment in a state where the substrate holding section is rotated with respect to the substrate unit mounting section. FIG. 2 is a perspective view showing a configuration in which cables are arranged in a cable arrangement section of the board unit according to the embodiment. FIG. 2 is a front view showing a cable connection configuration of the power storage device according to the embodiment.

Hereinafter, a power storage device according to an embodiment of the present invention (including variations thereof) will be described with reference to the drawings. Note that the embodiments described below are all inclusive or specific examples. The numerical values, shapes, materials, components, arrangement positions and connection forms of the components shown in the following embodiments are merely examples, and do not limit the present invention. Further, in each figure, dimensions etc. are not strictly illustrated.

In addition, in the following explanation and drawings, the direction in which a pair of electrode terminals (positive electrode side and negative electrode side) in one power storage element are lined up, the direction in which the short sides of the container of the power storage element are opposite, or the length of the exterior body of the power storage unit The opposing direction of the side surfaces is defined as the X-axis direction. The direction in which a plurality of power storage elements are lined up, the direction in which the long sides of the container of the power storage elements face each other, the direction in which the short sides of the exterior body of the power storage unit face each other, the direction in which the power storage unit and the board unit are lined up, or the board holding part of the board unit. The direction in which the substrate and the cover are lined up is defined as the Y-axis direction. The Z-axis direction is defined as the direction in which the exterior support and the lid of the power storage unit are lined up, the direction in which the power storage elements and the bus bar are lined up, the direction in which the container body and the lid of the power storage element are lined up, or the vertical direction. do. These X-axis direction, Y-axis direction, and Z-axis direction are directions that intersect with each other (orthogonal in this embodiment). Note that depending on the mode of use, the Z-axis direction may not be the vertical direction, but for convenience of explanation, the Z-axis direction will be described as the vertical direction below.

Furthermore, in the following description, for example, the X-axis plus direction indicates the arrow direction of the X-axis, and the X-axis minus direction indicates the opposite direction to the X-axis plus direction. The same applies to the Y-axis direction and the Z-axis direction. Furthermore, hereinafter, the Y-axis negative direction may also be referred to as the first direction, and the Z-axis negative direction or the Z-axis positive direction may also be referred to as the second direction. Furthermore, expressions indicating relative directions or orientations, such as parallel and orthogonal, include cases where the directions or orientations are not strictly speaking. For example, when two directions are orthogonal, it does not only mean that the two directions are completely orthogonal, but also that they are substantially orthogonal, that is, there is a difference of only a few percent, for example. It also means to include.

(Embodiment)
[1 General description of power storage device 1]
First, the configuration of power storage device 1 in this embodiment will be described. FIG. 1 is a perspective view showing the appearance of a power storage device 1 according to the present embodiment. FIG. 2 is a perspective view showing the configuration of power storage device 1 according to the present embodiment when separated into power storage unit 10 and board unit 20. FIG. 3 is an exploded perspective view showing each component when power storage unit 10 according to the present embodiment is disassembled.

Power storage device 1 is a device that can charge electricity from the outside and discharge electricity to the outside, and in this embodiment, has a substantially rectangular parallelepiped shape. For example, the power storage device 1 is used for power storage, power supply, or the like. Specifically, the power storage device 1 is used for driving or starting an engine of a moving object such as a car, a motorcycle, a watercraft, a ship, a snowmobile, an agricultural machine, a construction machine, or a railway vehicle for an electric railway. It is used as a battery etc. Examples of the above-mentioned vehicle include an electric vehicle (EV), a hybrid electric vehicle (HEV), a plug-in hybrid electric vehicle (PHEV), and a gasoline vehicle. Examples of the above-mentioned railway vehicles for electric railways include electric trains, monorails, and linear motor cars. Furthermore, the power storage device 1 can also be used as a stationary battery or the like used for home use, a generator, or the like.

As shown in these figures, the power storage device 1 includes a power storage unit 10 and a board unit 20 attached to the power storage unit 10. First, the configuration of power storage unit 10 will be explained in detail. The power storage unit 10 is a battery module (battery assembly) having a substantially rectangular parallelepiped shape that is elongated in the Y-axis direction. Specifically, the power storage unit 10 includes a plurality of power storage elements 11, a busbar frame 12, a plurality of busbars 13, an exterior main body 14, an exterior support 15, and an exterior lid 17 that accommodate these. It has an exterior body 18. Further, a cable 30 is connected to the power storage unit 10. Note that the power storage unit 10 may include a restraining member (end plate, side plate, etc.) that restrains the plurality of power storage elements 11.

The power storage element 11 is a secondary battery (single battery) that can charge and discharge electricity, and more specifically, it is a nonaqueous electrolyte secondary battery such as a lithium ion secondary battery. . The power storage elements 11 have a flat rectangular parallelepiped shape (prismatic shape), and in this embodiment, 16 power storage elements 11 are arranged side by side in the Y-axis direction. Note that the shape, arrangement position, number, etc. of the power storage elements 11 are not particularly limited. Further, the power storage element 11 is not limited to a non-aqueous electrolyte secondary battery, and may be a secondary battery other than a non-aqueous electrolyte secondary battery, or a capacitor. Furthermore, the power storage element 11 may be a primary battery that can use the stored electricity without having to be charged by the user, instead of being a secondary battery. Furthermore, the power storage element 11 may be a battery using a solid electrolyte. Further, the power storage element 11 can also be a laminate type power storage element.

Specifically, the power storage element 11 includes a metal container 11a, and a positive electrode terminal 11b and a negative electrode terminal 11c, which are metal electrode terminals, are provided on the lid of the container 11a. Further, a spacer 11d is arranged between adjacent power storage elements 11. Note that the lid of the container 11a may be provided with an injection part for injecting the electrolytic solution, a gas discharge valve, etc. that discharges gas to release the pressure when the pressure inside the container 11a increases. good. Further, inside the container 11a, an electrode body (also referred to as a power storage element or a power generation element), a current collector (a positive electrode current collector and a negative electrode current collector), etc. are arranged, and an electrolytic solution (non-aqueous electrolyte) etc. Although it is enclosed, detailed explanation will be omitted.

Here, the positive electrode terminal 11b and the negative electrode terminal 11c are arranged to protrude upward (in the Z-axis positive direction) from the lid of the container 11a. Then, the outermost positive terminals 11b and negative terminals 11c of the plurality of power storage elements 11 are connected to the cable 30, so that the power storage device 1 charges electricity from the outside and discharges electricity to the outside. be able to. The cable 30 is an electric wire (also referred to as a main circuit cable, a power cable, a power cable, a power line, or a power line) through which a current (also referred to as a charge/discharge current or main current) for charging and discharging the power storage device 1 (power storage element 11) flows. It has a positive power cable 31 on the positive side and a negative power cable 32 on the negative side. That is, the positive power cable 31 of the cable 30 is connected to the positive terminal 11b of the power storage element 11 at the end in the Y-axis positive direction among the plurality of power storage elements 11, and the positive electrode terminal 11b of the power storage element 11 at the end in the Y-axis negative direction A negative power supply cable 32 of the cable 30 is connected to the negative terminal 11c of the cable 30.

The busbar frame 12 is a flat rectangular member that can electrically insulate the busbar 13 from other members and regulate the position of the busbar 13. The bus bar frame 12 is made of an insulating material similar to the materials listed for the board accommodating portion 100 of the board unit 20, which will be described later, such as polycarbonate (PC), polypropylene (PP), and polyethylene (PE). Specifically, the bus bar frame 12 is placed above the plurality of power storage elements 11 and positioned with respect to the plurality of power storage elements 11. Furthermore, a busbar 13 is placed and positioned on the busbar frame 12. Thereby, the bus bar 13 is positioned relative to the plurality of power storage elements 11 and joined to the positive electrode terminal 11b and the negative electrode terminal 11c of the plurality of power storage elements 11. The busbar frame 12 also has the function of reinforcing the exterior body 14 as an inner cover of the exterior body 18 .

The bus bar 13 is a rectangular plate-like member that is arranged on the plurality of power storage elements 11 (on the busbar frame 12) and electrically connects the electrode terminals of the plurality of power storage elements 11. The bus bar 13 is made of metal such as aluminum, aluminum alloy, copper, copper alloy, stainless steel, or the like. In this embodiment, the bus bar 13 connects the 16 power storage elements 11 in series by connecting the positive terminals 11b and negative terminals 11c of adjacent power storage elements 11. Note that the mode of connection of the power storage elements 11 is not limited to the above, and series connection and parallel connection may be combined in any manner.

Further, a cable 13a is connected to the bus bar 13 or the electrode terminal of the power storage element 11. The cable 13a is an electric wire (also referred to as a communication cable, a control cable, a communication line, or a control line) for measuring the voltage of the power storage element 11, for temperature measurement, or for voltage balance between the power storage elements 11. Note that a thermistor (not shown) for measuring the temperature of the power storage element 11 is arranged on the bus bar 13 or the electrode terminal of the power storage element 11, but a description thereof will be omitted. Furthermore, a connector 13b is connected to the end of the cable 13a in the Y-axis negative direction. The connector 13b is a connector connected to a board 200 of a board unit 20, which will be described later. That is, the cable 13a transmits information such as the voltage and temperature of the power storage element 11 to the board 200 of the board unit 20 via the connector 13b. The cable 13a also has a function of discharging the power storage elements 11 having a high voltage under the control of the board 200 and balancing the voltages between the power storage elements 11.

The exterior body 18 is a rectangular (box-shaped) container (module case) that constitutes the exterior body of the power storage unit 10 . That is, the exterior body 18 is disposed outside the power storage element 11 and the like, fixes the power storage element 11 and the like in a predetermined position, and protects the power storage element 11 and the like from impact and the like. Here, the exterior body 18 includes an exterior body 14 that constitutes the main body of the exterior body 18, an exterior body support 15 that supports the exterior body body 14, and an exterior body that constitutes the lid body (outer lid) of the exterior body 18. It has a body lid body 17.

The exterior body 14 is a bottomed rectangular cylindrical housing with an opening formed in the upper surface. The exterior body 14 is made of an insulating material similar to the materials listed for the substrate accommodating portion 100 of the substrate unit 20, which will be described later, such as PC, PP, and PE. The exterior support 15 and the exterior lid 17 are members that protect (reinforce) the exterior body 14. The exterior body support 15 and the exterior body lid 17 are formed of metal members such as stainless steel, aluminum, aluminum alloy, iron, and plated steel plate, for example. Note that the exterior support 15 and the exterior lid 17 may be made of the same material, or may be made of different materials.

The exterior support 15 is a member that supports the exterior body 14 from below (Z-axis negative direction), and includes a bottom portion 15a, a board unit attachment portion 16, and connection portions 15b and 15c. The bottom portion 15 a is a flat rectangular portion that constitutes the bottom portion of the power storage device 1 and extends in the Y-axis direction and parallel to the XY plane, and is disposed below the exterior body body 14 . The board unit attachment part 16 is a flat, rectangular part that stands upright in the Z-axis positive direction from the end of the bottom part 15a on the Y-axis negative direction side, and the board unit 20 is attached thereto. The connecting portion 15b is a portion that is disposed at the end of the board unit mounting portion 16 on the Z-axis positive direction side, projects in the Y-axis negative direction, and is connected to the exterior body lid 17. The connecting portion 15c is a portion that stands upright in the Z-axis positive direction from the end of the bottom portion 15a on the Y-axis positive direction and projects in the Y-axis positive direction, and is connected to the exterior body lid 17.

The exterior lid 17 is a member disposed to close the opening on the top surface of the exterior body 14, and includes a top surface portion 17a and connection portions 17b and 17c. The top surface portion 17a is a flat, rectangular portion that constitutes the top surface portion of the power storage device 1 and extends in the Y-axis direction and parallel to the XY plane, and is disposed above the exterior body 14. The connecting portion 17b is a portion that is disposed at the end of the top surface portion 17a on the Y-axis negative direction side, extends in the Z-axis negative direction, and projects in the Y-axis negative direction, and is a portion that is disposed at the end of the top surface portion 17a on the Y-axis negative direction side, and is a portion that protrudes in the Y-axis negative direction. connected to. The connecting portion 17c is a portion extending in the negative direction of the Z-axis from the end of the top surface portion 17a on the positive side of the Y-axis and protruding in the positive direction of the Y-axis, and is connected to the connecting portion 15c of the exterior body support 15. Ru. In this way, the exterior body support 15 and the exterior body lid 17 sandwich the exterior body body 14 from above and below, and the connecting portions 15b and 15c and the connecting portions 17b and 17c are connected by screws or the like. This makes it a fixed configuration.

The board unit 20 is a device that can monitor the state of the power storage element 11 included in the power storage unit 10 and control the power storage element 11. In the present embodiment, the substrate unit 20 is a flat rectangular member that is attached to the end of the power storage unit 10 in the longitudinal direction, that is, to the side surface of the power storage unit 10 on the Y-axis negative direction side. Specifically, the board unit 20 is rotatably attached to a board unit attachment portion 16 provided on the exterior support 15 of the exterior body 18 of the power storage unit 10 . The configuration of this board unit 20 will be explained in detail below.

[2 Description of the configuration of the board unit 20]
FIG. 4 is an exploded perspective view showing each component when the board unit 20 according to the present embodiment is disassembled. FIG. 5 is a perspective view, a sectional view, and a side view showing the configuration of the board unit 20 according to the present embodiment. Specifically, FIG. 5A is a perspective view showing the structure of the board unit 20 shown in FIG. 2 attached to the board unit mounting portion 16 of the exterior body support 15. FIG. 5B is a cross-sectional view showing the mounting structure of the board unit mounting part 16 and the board holding part 110. FIG. 5C is a side view showing the attachment structure of the substrate holding part 110 and the cover part 120. FIG. 6 is a cross-sectional view showing the configuration of the board unit 20 according to this embodiment. Specifically, FIG. 6 is a cross-sectional view showing the configuration of the substrate unit 20 of FIG. 5(a) taken along a VI-VI cross section.

FIG. 7 is a perspective view, a front view, and a side view showing the configuration of the board unit 20 according to the present embodiment with the cover section 120 opened. Specifically, FIG. 7A is a perspective view showing the configuration of the board unit 20 shown in FIG. 5 in a state where the cover part 120 is rotated with respect to the board holding part 110. FIG. 7B is a partial front view showing the configuration of the through hole 230 of the substrate 200 and the fixing portion 116 of the substrate holding portion 110 when viewed from the Y-axis negative direction. FIG. 7(c) is a partial side view showing the attachment structure of the substrate holding part 110 and the cover part 120, and corresponds to FIG. 5(c).

FIG. 8 is a perspective view and a cross-sectional view showing the structure of the exterior body support 15 according to the present embodiment in a state where the board holding part 110 is rotated with respect to the board unit attachment part 16. Specifically, (a) in FIG. 8 shows a state in which the board holding part 110 is rotated with respect to the board unit mounting part 16 until it can be rotated (until the rotation of the board holding part 110 is restricted). FIG. FIG. 8(b) is a cross-sectional view showing the mounting configuration of the board unit mounting portion 16 and the board holding portion 110, and corresponds to FIG. 5(b).

As shown in these figures, the substrate unit 20 includes a substrate accommodating section 100 and a substrate 200 accommodated within the substrate accommodating section 100. In other words, the substrate accommodating section 100 accommodates the substrate 200 and fixes it at a predetermined position, thereby protecting the substrate 200 from impacts and the like. The substrate housing section 100 is made of, for example, polycarbonate (PC), polypropylene (PP), polyethylene (PE), polystyrene (PS), polyphenylene sulfide resin (PPS), polyphenylene ether (PPE (including modified PPE)), polyethylene terephthalate. (PET), polybutylene terephthalate (PBT), polyether ether ketone (PEEK), tetrafluoroethylene perfluoroalkyl vinyl ether (PFA), polytetrafluoroethylene (PTFE), polyether sulfone (PES), ABS resin, Alternatively, it is formed of an insulating member such as a composite material thereof, or a metal coated with an insulating coating. The substrate accommodating section 100 thereby prevents the substrate 200 from coming into contact with external metal members or the like. In addition, as long as the electrical insulation of the board|substrate 200 is maintained, the board|substrate accommodating part 100 may be formed of electrically conductive members, such as metal.

In addition, the board housing section 100 is placed in an upright position on the side surface of the exterior body support 15 in the horizontal direction (specifically, in the negative Y-axis direction (first direction)) of the exterior body 18 of the power storage unit 10. It is rotatably attached to the board unit attachment part 16). The substrate storage section 100 includes a substrate holding section 110 that holds the substrate 200, and a cover section 120 that is attached to the substrate holding section 110. That is, the board 200 and the board accommodating part 100 (the board holding part 110 and the cover part 120) are arranged in an upright position in the negative Y-axis direction (first direction) of the power storage unit 10. Hereinafter, the configurations of these substrates 200, as well as the substrate holding section 110 and cover section 120 included in the substrate storage section 100 will be described in detail.

[2.1 Description of substrate 200]
Board 200 is a circuit board (monitoring board) electrically connected to power storage unit 10 . Specifically, the board 200 is electrically connected to the power storage element 11 via the above-mentioned cable 13a and connector 13b, thereby acquiring information such as the voltage and temperature of the power storage element 11, and controlling the power storage element 11. Monitor states such as charging state and discharging state. Further, the board 200 also has a function as a control board that balances the voltage between the power storage elements 11 by discharging the power storage elements 11 using the cable 13a. Components (not shown) are mounted on the board 200 on both the board surface on the Y-axis positive direction side and the board surface on the Y-axis negative direction side. Note that the board 200 may not control the power storage element 11 but only monitor the state of the power storage element 11.

More specifically, the board 200 has connectors 210 and 220 and a through hole 230. The connectors 210 and 220 are located at an end of the outer circumferential portion of the board 200 on a side different from the Z-axis negative direction side (the side with an axis around which the cover part 120 rotates with respect to the board holding part 110, which will be described later). It is located. In this embodiment, two connectors 210 are arranged side by side in the X-axis direction on both sides in the X-axis direction of the end of the board 200 on the Z-axis positive direction, and Two connectors 220 are arranged side by side in the Z-axis direction on the Z-axis negative direction side.

The connector 210 is arranged on the board surface of the board 200 in the negative Y-axis direction with the insertion port facing the Z-axis positive direction (a direction parallel to the board surface of the board 200). The connector 13b described above is configured to be detachable (see FIG. 7(a)). The connector 220 is arranged on the board surface of the board 200 on the Y-axis negative direction side with the insertion port facing in the Y-axis negative direction, and is connected to the insertion port through the opening 124 of the cover part 120. It has a structure in which an external connector (not shown) can be attached and detached (see FIG. 5(a) and FIG. 7(a)). The opening 124 is a rectangular through hole formed at a position corresponding to the connector 220 on the Z-axis minus direction side of the end of the cover section 120 on the X-axis minus direction.

The through hole 230 is a rectangular through hole that penetrates the substrate 200 in the Y-axis direction. In this embodiment, a plurality of (six) through holes 230 are arranged in the outer peripheral portion of the substrate 200. That is, three through holes 230 are arranged in line in the X-axis direction at the end of the substrate 200 on the Z-axis positive direction, and three through-holes 230 are arranged in the X-axis direction at the end of the substrate 200 on the Z-axis negative direction. They are arranged side by side in the axial direction. Specifically, as shown in FIG. 7(b), the through hole 230 is formed to be longer in the X-axis direction than in the Z-axis direction, and the through hole 230 is formed to have a longer length in the X-axis direction than in the Z-axis direction. The portion 116 is inserted (press-fitted). A detailed description of the configuration in which the fixing portion 116 is inserted (press-fitted) into the through hole 230 will be described later.

[2.2 Description of substrate holding section 110 and cover section 120]
Substrate holding section 110 is a member that is disposed between power storage unit 10 and substrate 200 and holds substrate 200. Further, as described above, the substrate holding section 110 is rotatably attached to the substrate unit attachment section 16 of the exterior support 15 of the power storage unit 10 in an upright position. The substrate holding section 110 includes a holding section main body 111, a gripping section 115 having a first substrate side mounting section 112, a first holding section side mounting section 113, an upper mounting section 114, and a fixing section 116. ing.

The cover section 120 is a member that is disposed in the negative Y-axis direction (first direction) of the substrate 200 and closes the opening of the substrate holding section 110, and is attached to the substrate holding section 110 so as to be openable and closable. Specifically, the cover section 120 is rotatably attached to the substrate holding section 110. In addition to the opening 124 described above, the cover section 120 includes a cover section main body 121, a first cover side attachment section 122, a second cover side attachment section 123, a cable arrangement section 125, and a board regulation section 126 (Fig. , see FIG. 7, etc.).

[2.2.1 Description of holding part main body 111 and cover part main body 121]
The holding part main body 111 is a part that constitutes the main body of the substrate holding part 110, and includes a first holding part wall part 111a and a second holding part wall part 111b. The first holding portion wall portion 111a is a flat rectangular portion parallel to the XZ plane, which is arranged between the board unit attachment portion 16 and the board 200. The second holding portion wall portion 111b is a flat, rectangular portion that protrudes from the outer peripheral edge of the first holding portion wall portion 111a in the negative Y-axis direction and surrounds the periphery of the substrate 200. In this embodiment, the second holding portion wall portion 111b is arranged so as to surround a portion of both sides of the substrate 200 in the X-axis direction, the negative Z-axis direction, and a portion of the positive Z-axis direction.

The cover main body 121 is a part of the main body of the cover 120, and includes a first cover wall 121a and a second cover wall 121b. The first cover wall portion 121a is a flat rectangular portion parallel to the XZ plane that is arranged at a position sandwiching the substrate 200 between the first holding portion wall portion 111a of the holding portion main body 111. The second cover wall portion 121b is a flat, substantially rectangular member that protrudes from the outer peripheral edge of the first cover wall portion 121a in the Y-axis positive direction and surrounds the periphery of the substrate 200 and the second holding portion wall portion 111b. It is a part. In this embodiment, the second cover wall portion 121b is arranged to surround both sides of the substrate 200 and the second holding portion wall portion 111b in the X-axis direction and the positive Z-axis direction.

[2.2.2 Description of first board side mounting part 112]
The first board-side attachment part 112 is a part that is arranged on the bottom 15a side (Z-axis negative direction side) of the power storage device 1 in the board holding part 110 and is rotatably attached to the power storage unit 10. Specifically, two first board-side attachment parts 112 are arranged at both ends of the board holding part 110 in the negative Z-axis direction and in the X-axis direction. Moreover, the board unit attachment part 16 of the power storage unit 10 has a first power storage side attachment part 16a to which the first board side attachment part 112 is attached. That is, the two first power storage side attachment parts 16a are arranged at positions corresponding to the two first board side attachment parts 112 on the Z-axis negative side and both ends of the board unit attachment part 16 in the X-axis direction.

Specifically, as shown in (a) and (b) of FIG. It is a columnar shaft body extending in the X-axis direction. The first power storage side attachment part 16a extends in the Z-axis positive direction from the end of the bottom part 15a of the exterior body support 15 on the Y-axis negative direction, is bent in the Y-axis negative direction, and is bent in the Z-axis negative direction. This is a bent part. That is, the first power storage side attachment part 16a has a shape in which the surface on the Z-axis positive direction protrudes in the Z-axis positive direction, and the surface on the Z-axis negative direction is recessed in the Z-axis positive direction. In other words, the first power storage side attachment portion 16a has an inverted U-shape when viewed from the X-axis direction, with the portion on the Z-axis negative side open and recessed in the Z-axis positive direction.

A first board-side attachment portion 112 is inserted and disposed in the recessed portion of the first power storage-side attachment portion 16a. In other words, the first power storage side is placed on both sides of the first board-side mounting part 112 in the Y-axis direction and on the Z-axis positive direction so as to surround both sides of the first board-side mounting part 112 in the Y-axis direction and the Z-axis positive direction. A mounting portion 16a is arranged. As a result, the first board-side attachment portion 112 is disposed closer to the bottom 15a of the power storage device 1 (on the Z-axis negative direction side) than the first power storage-side attachment portion 16a.

Moreover, as shown in FIG. 8, the first board side attachment part 112 has a structure that is rotatable (rotatable) with respect to the first power storage side attachment part 16a. That is, as the first board-side mounting part 112 rotates with respect to the first power storage-side mounting part 16a, the board holding part 110 moves to the board unit mounting part 16 with the first board-side mounting part 112 as an axis. Rotate (rotate) relative to the Further, since the inclined surface 115a of the gripping part 115, which will be described later, comes into contact with the wall part 16b provided at the lower part of the board unit mounting part 16, the board holding part 110 is tilted with respect to the board unit mounting part 16. , rotation of the board holding section 110 relative to the board unit mounting section 16 is restricted. The wall portion 16b is a flat and rectangular portion extending in the Z-axis negative direction from between the two first power storage side attachment portions 16a at the end of the bottom portion 15a of the exterior body support 15 on the Y-axis negative direction side. It is used to attach the power storage device 1 to a shelf board 2 (see FIG. 10) of a rack (a member that accommodates a plurality of power storage devices 1).

As a result, the substrate holding section 110 is restricted from rotating by approximately 45 degrees relative to the substrate unit mounting section 16, and in this state, the substrate holding section 110 can be removed from the board unit mounting section 16. Specifically, while rotating the board holding part 110 with respect to the board unit mounting part 16, a second board side mounting part 114a of the upper mounting part 114, which will be described later, is connected to a second storage battery of the board unit mounting part 16, which will be described later. Remove it from the side attachment part 16c. Then, after rotating the board holding part 110 by about 45 degrees with respect to the board unit mounting part 16, the board holding part 110 is moved in the negative direction of the Z axis, thereby removing the board holding part 110 from the board unit mounting part 16. Can be removed.

In addition, when attaching the board holding part 110 to the board unit mounting part 16, with the board holding part 110 tilted at approximately 45 degrees with respect to the board unit mounting part 16, the first board side mounting part 112 is Attach it by inserting it into the first power storage side attachment part 16a from the direction. Then, the board holding part 110 is rotated so as to approach the board unit mounting part 16, and the second board side mounting part 114a of the upper mounting part 114 is attached to the second power storage side mounting part 16c of the board unit mounting part 16. . In this way, the board holding part 110 can be attached and detached from the power storage unit 10 (the board unit 20 can be attached and detached). Note that the angle at which the board holding part 110 is regulated with respect to the board unit mounting part 16 is not limited to 45 degrees, as long as the board holding part 110 can be attached to and detached from the board unit mounting part 16. It may be at such an angle.

[2.2.3 Description of first holding part side attachment part 113 and first cover side attachment part 122]
The first holding part side attachment part 113 is arranged on the bottom part 15a side (Z-axis negative direction side) of the power storage device 1 in the substrate holding part 110, and is a part to which the cover part 120 is attached. Specifically, two first holder side attachment parts 113 are arranged on the Z-axis minus direction side of the substrate holder 110 and outside the first substrate side attachment parts 112 at both ends in the X-axis direction. Further, a first cover-side attachment portion 122 of the cover portion 120 is attached to the first holding portion-side attachment portion 113 .

The first cover-side attachment portion 122 is a portion that is disposed on the bottom portion 15a side (Z-axis negative direction side) of the power storage device 1 in the cover portion 120 and is rotatably attached to the substrate holding portion 110. Specifically, two first cover-side attachment parts 122 are arranged at positions corresponding to the two first holding part-side attachment parts 113 on the Z-axis negative direction side and both ends of the cover part 120 in the X-axis direction. ing. In other words, the first cover-side attachment portions 122 are arranged at the ends of the side walls on both sides in the X-axis direction of the second cover wall portion 121b on the Z-axis minus direction side.

Specifically, as shown in FIGS. 5A and 5C, the first holding part side mounting part 113 has a circular columnar shaft extending in the X-axis direction and having a circular shape when viewed from the X-axis direction. It is the body. The first cover-side attachment portion 122 has an inverted C-shape when viewed from the X-axis direction, with a portion on the negative side of the Y-axis being open and recessed in the positive direction of the Y-axis. The first holding part side attachment part 113 is inserted and arranged in the recessed part of the first cover side attachment part 122. In other words, the first holder is installed on both sides of the first holder side attachment part 113 in the Z axis direction and on the Y axis positive direction side so as to surround both sides of the first holder side attachment part 113 in the Z axis direction and on the Y axis positive direction side. A cover side attachment part 122 is arranged. As a result, the first cover-side attachment portion 122 is disposed closer to the direction from the cover portion 120 toward the substrate holding portion 110 (Y-axis positive direction) than the first holding portion-side attachment portion 113.

Further, as shown in FIGS. 7(a) and (c), the first cover side attachment part 122 has a structure that is rotatable (rotatable) with respect to the first holding part side attachment part 113. There is. That is, as the first cover-side attachment part 122 rotates (rotates) with respect to the first holding-part side attachment part 113, the cover part 120 is attached to the substrate holding part 110 with the first holding part-side attachment part 113 as an axis. Rotate (rotate) relative to the Further, the rotation regulating portion 127 (see FIG. 7C) provided near the first cover side attachment portion 122 comes into contact with the substrate holding portion 110, so that the rotation of the cover portion 120 relative to the substrate holding portion 110 is caused. movement is regulated. In other words, the rotation regulating portion 127 is a planar portion disposed on the lower end surface of the first cover wall portion 121a of the cover portion main body 121, and is a Y-axis minus portion of the lower portion of the board holding portion 110 (gripping portion 115 etc.) By coming into contact with the surface on the direction side, rotation of the cover part 120 with respect to the substrate holding part 110 is restricted.

As a result, in the present embodiment, the cover section 120 is restricted from rotating by 90 degrees with respect to the substrate holding section 110, and the substrate 200 cannot be attached to or removed from the substrate holding section 110 in this state. I can do it. Specifically, while rotating the cover part 120 with respect to the substrate holding part 110, the second cover side mounting part 123, which will be described later, is removed from the second holding part side mounting part 114b of the upper mounting part 114. Then, after the cover section 120 is rotated about 90 degrees relative to the substrate holding section 110, the substrate 200 can be attached to and removed from the substrate holding section 110. Thereby, the substrate 200 can be attached to and detached from the substrate holder 110 without removing the cover part 120 from the substrate holder 110.

Moreover, in this state, the cover part 120 can also be removed from the substrate holding part 110 by moving the cover part 120 in the Z-axis plus direction. When the cover part 120 is removed from the board holding part 110, the first holding part side mounting part 113 is attached to the first cover side mounting part 122 from the negative Z-axis direction with the cover part 120 perpendicular to the board holding part 110. By inserting the cover part 120 into the substrate holding part 110, the cover part 120 can be attached to the substrate holding part 110. Then, when the cover part 120 is rotated so as to approach the substrate holding part 110, the second cover side attachment part 123 can be attached to the second holding part side attachment part 114b. In this way, the cover section 120 can also be attached to and detached from the substrate holding section 110. Note that the angle at which the cover part 120 is regulated relative to the substrate holding part 110 is not limited to 90°, but may be 90°±10°, as long as the cover part 120 can be attached to and removed from the substrate holding part 110. etc., any angle is acceptable. When the angle is larger than 90°, it is easy to replace the substrate 200, and when the angle is smaller than 90°, it is possible to prevent the substrate 200 from falling.

[2.2.4 Description of upper mounting part 114 and second cover mounting part 123]
The upper mounting portion 114 is disposed at the center of the substrate holding portion 110 in the X-axis direction on the Z-axis positive direction side (opposite side to the bottom portion 15a), and is attached to be engageable with the power storage unit 10 and the cover portion 120. It is a part. Specifically, the upper attachment part 114 includes a second board attachment part 114a that is attached to the electricity storage unit 10 by engaging with the electricity storage unit 10, and a second board attachment part 114a that is attached to the electricity storage unit 10 by engaging with the cover part 120. It has a second holding part side attachment part 114b that is attached to the second holding part side attachment part 114b.

As shown in FIG. 6 and the like, the second board-side attachment portion 114a is a protrusion that is disposed on the Z-axis minus direction side of the upper attachment portion 114 and protrudes in the Z-axis minus direction. Further, the board unit mounting portion 16 of the power storage unit 10 has a second board unit mounting portion 114a attached to the second board mounting portion 114a at a position corresponding to the second board mounting portion 114a at the center in the X-axis direction on the Z-axis positive direction side. It has a power storage side attachment part 16c. A rectangular opening 16d is formed in the second power storage side attachment portion 16c. The second board-side attachment portion 114a is inserted into the opening 16d from the Z-axis positive direction and engages with the edge of the opening 16d in the Y-axis negative direction, thereby attaching the second power storage side attachment portion 16c. engage with. As a result, substrate holding section 110 and power storage unit 10 engage with each other in the positive Z-axis direction.

The second holding part side attachment part 114b is a protrusion that is disposed on the Z-axis positive direction side of the upper attachment part 114 and protrudes in the Z-axis negative direction, and the second cover side attachment part 123 of the cover part 120 is attached to the second holding part side attachment part 114b. It will be done. The second cover-side attachment part 123 is a part disposed at the center of the cover part 120 in the X-axis direction on the Z-axis positive direction side (opposite side to the bottom part 15a), and has a protrusion 123a that protrudes in the Z-axis positive direction. have. This protrusion 123a is arranged on the Y-axis positive direction side of the second holding part-side mounting part 114b and engages with the second holding part-side mounting part 114b in the Y-axis direction, so that the cover part 120 and the board holding part 110 are engaged on the Z-axis positive direction side. In this way, the second cover side attachment part 123 is a part that is attached to the substrate holder 110 by engaging with the substrate holder 110.

[2.2.5 Description of gripping section 115]
Grip portion 115 is a handle for gripping power storage device 1, which is disposed at the center in the X-axis direction on the bottom 15a side (Z-axis negative direction side) of power storage device 1 in substrate holding portion 110. Specifically, the grip portion 115 is a portion that is long in the X-axis direction and has the above-described first board side attachment portions 112 at both ends. That is, as described above, at least a portion of the grip portion 115 (the first board-side attachment portion 112) is closer to the bottom portion 15a of the power storage device 1 than at least a portion of the power storage unit 10 (the first power storage-side attachment portion 16a). It will be placed on the side. In this embodiment, the gripping section 115 is formed integrally with the substrate holding section 110.

In this way, the grip portion 115 functions as a handle on the negative Y-axis direction side of the power storage device 1. In addition, on the Y-axis positive direction side of the power storage device 1, the portion where the connection portion 15c of the exterior body support 15 of the power storage unit 10 and the connection portion 17c of the exterior body lid 17 are connected is connected to the handle (second grip). (see Figure 2). The definition of the second gripping portion is not particularly limited, and for example, only the connecting portion 15c may be referred to as the second gripping portion instead of both the connecting portion 15c and the connecting portion 17c, or the connecting portion 15c, Alternatively, the central portion of the connecting portion 15c and the connecting portion 17c in the X-axis direction may be referred to as a second gripping portion, or the other portion may be referred to as a second gripping portion. The second gripping portion is formed by folding the sheet metal downward so that it does not form an edge when gripped by an operator. Note that a portion where the connection portion 15b of the exterior body support 15 and the connection portion 17b of the exterior body lid 17 are connected is covered by the cover portion 120.

Furthermore, the grip portion 115 is attached to a surface on the power storage unit 10 side (Y-axis positive direction side) in a direction opposite to the power storage unit 10 (Y-axis It has an inclined surface 115a that is inclined in a negative direction). In other words, the surface of the gripping portion 115 in the negative Y-axis direction is parallel to the XZ plane, while the surface in the positive Y-axis direction is inclined from the XZ plane. Note that the angle of inclination of the inclined surface 115a is not particularly limited, but it is possible to insert the fingers of the operator's hand into the Y-axis plus direction side of the gripping part 115 (or to make it easy to grip the gripping part 115). It is preferable that it be inclined at an angle (easy to insert). In this embodiment, the inclined surface 115a is inclined at about 45 degrees with respect to the vertical direction.

Further, in the gripping portion 115, a gripping portion recess 115b recessed in the direction opposite to the power storage unit 10 (Y-axis negative direction) is formed on the surface on the power storage unit 10 side (Y-axis positive direction side) (Fig. (see 6). In other words, the gripper recess 115b is a recess formed by recessing the inclined surface 115a of the gripper 115 in the negative direction of the Y-axis. In this embodiment, two gripper recesses 115b are formed in the inclined surface 115a of the gripper 115 in a row in the X-axis direction. Alternatively, it can be said that the sloped surface 115a is formed between the two gripper recesses 115b and on both sides of the two gripper recesses 115b in the X-axis direction. In other words, a wall portion is arranged between the two gripping portion recesses 115b and on both sides of the two gripping portion recesses 115b in the X-axis direction (edge portions of the gripping portion 115), and the wall portion has an inclined surface. 115a is formed. Note that the size, shape, and number of the gripper recesses 115b are not particularly limited, but should be large enough to allow (or be easily inserted into) the fingers of the operator's hand so that the gripper 115 can be gripped (or easily gripped). Preferably, the size, shape, and number of pieces are the same.

Furthermore, the tip of the grip part 115 in the negative Z-axis direction protrudes toward the front (in the negative direction of the Y-axis), and the tip has an R shape, so that when the operator grips the grip part 115, the edge of the grip part 115 is We have been able to prevent things that could get into the hands of others.

[2.2.6 Description of fixing part 116 and board regulating part 126]
The fixing part 116 is a part that fixes the board 200 in a position where the board surface of the board 200 is oriented in a direction intersecting the vertical direction (Z-axis direction), and in this embodiment, the board surface of the board 200 is horizontal. The substrate 200 is fixed in a posture facing the direction (Y-axis direction). Specifically, the fixing portion 116 protrudes in the Y-axis negative direction from the surface of the substrate holding portion 110 facing the substrate 200 (the surface on the Y-axis negative direction side of the first holding portion wall portion 111a of the holding portion main body 111). This is a protrusion that fixes the substrate 200 in a press-fitted state. Note that the fixing portion 116 is not electrically connected to the substrate 200 and fixes the substrate 200 in a non-conductive state.

In this embodiment, a plurality of (six) fixing parts 116 are arranged on the outer peripheral portion of the first holding part wall part 111a. That is, the three fixing parts 116 are arranged in line in the X-axis direction at the end of the first holding part wall part 111a on the Z-axis positive direction side, and Three fixing parts 116 are arranged in line in the X-axis direction. That is, the fixing part 116 is arranged at a position corresponding to the through hole 230 formed in the substrate 200.

Specifically, as shown in FIGS. 6 and 7(b), the fixing part 116 is a protrusion that becomes thinner toward the tip, and is inserted and press-fitted into the through hole 230 of the substrate 200. Then, the substrate 200 is fixed. That is, the fixing portion 116 has a tapered shape in which the width in the X-axis direction and the Z-axis direction becomes smaller as it goes in the negative Y-axis direction. Further, the fixing part 116 has a cross shape (+ shape) when viewed from the Y-axis direction, contacts the inner surface of the through-hole 230 in the Z-axis direction, is compressed, and is press-fitted into the through-hole 230. . Note that the fixing portion 116 is configured not to come into contact with the inner surface of the through hole 230 in the X-axis direction so that it can be inserted into the through hole 230 even if the fixing portion 116 is misaligned with the through hole 230. Furthermore, the fixing section 116 fixes the substrate 200 at a position spaced apart from the surface facing the substrate 200 (the surface on the Y-axis minus direction side of the first holding section wall section 111a). That is, a space is formed between the substrate 200 and the first holding portion wall portion 111a.

Note that the sizes and shapes of the fixing portion 116 and the through hole 230 are not particularly limited as long as the fixing portion 116 can be press-fitted into the through hole 230. For example, the fixing part 116 and the through hole 230 may have a circular shape, an elliptical shape, an elliptical shape, a triangular shape, or another polygonal shape when viewed from the Y-axis direction, and the fixing part 116 In this case, it may also come into contact with the inner surface of the through hole 230 and be compressed. Furthermore, the number and arrangement positions of the fixing portions 116 and through holes 230 are not particularly limited.

Further, the substrate regulating section 126 of the cover section 120 is arranged on the Y-axis negative direction side of the substrate 200. The board regulating part 126 is a protrusion that protrudes in the Y-axis positive direction from the surface of the first cover wall part 121a of the cover main body 121 on the Y-axis positive direction, and extends in the direction toward the cover part 120 of the board 200 (Y-axis movement in the negative direction). When the substrate 200 attempts to move in the negative direction of the Y-axis, the tip of the substrate regulating portion 126 comes into contact with the substrate 200, so that movement of the substrate 200 in the negative direction of the Y-axis is restricted. That is, since the fixing portion 116 restricts movement of the substrate 200 in the Y-axis plus direction, the movement of the substrate 200 in both directions in the Y-axis direction is restricted by the fixing portion 116 and the substrate restriction portion 126.

In this embodiment, a plurality (four) of cylindrical substrate regulating parts 126 are arranged on the outer peripheral portion of the first cover wall part 121a. That is, the board regulating part 126 is arranged at the outer peripheral portion of the board 200 and at a position that does not overlap the fixing part 116 when viewed from the Y-axis direction. Note that the size, shape, number, arrangement position, etc. of the board regulating portions 126 are not limited to the above.

[2.2.7 Description of cable arrangement section 125]
Next, the configuration of the cable arrangement section 125 of the cover section 120 will be explained using FIGS. 9 and 10 as well. FIG. 9 is a perspective view showing the configuration of the board unit 20 according to the present embodiment in a state where the cable 30 is arranged in the cable arrangement section 125. Specifically, FIG. 9 is a perspective view showing an enlarged end portion of power storage device 1 shown in FIG. 1 on the Y-axis negative direction side. FIG. 10 is a front view showing a connection configuration of cable 30 of power storage device 1 according to the present embodiment. Specifically, FIG. 10 shows a configuration in which two power storage devices 1 are lined up in the Z-axis direction and cables 30 are connected, as viewed from the negative Y-axis direction.

The cable arrangement section 125 is arranged at the end of the cover section 120 on the X-axis positive direction side opposite to the bottom 15a of the power storage device 1 (the Z-axis positive direction side), and the positive power supply cable 31 of the cable 30 is arranged therein. This is the part where As shown in FIGS. 4, 5, 9, etc., the cable arrangement section 125 includes a first recess 125a, an opening/closing regulating section 125b, an inclined section 125c, and a cable regulating section 125d.

The first recessed portion 125a has an end portion on the X-axis positive direction side of the upper surface of the wall portion (also referred to as the third cover wall portion) on the Z-axis positive direction side of the cover portion 120 in the Z-axis negative direction (first direction). It is a recessed part recessed in the second direction (intersecting with the second direction). It can also be said that the first recess 125a is a recess in which the front surface (the surface in the negative Y-axis direction) of the first cover wall 121a is recessed. Specifically, the first recess 125a is a recess that extends in the Y-axis direction and is formed to penetrate the cover part 120 in the Y-axis direction, and the positive power supply cable 31 is disposed inside thereof.

The opening/closing regulating portion 125b is a flat rectangular wall portion parallel to the XZ plane and arranged in the X-axis plus direction of the first recess 125a. In other words, the opening/closing regulating part 125b is a part extending in the Z-axis positive direction from the end of the first cover wall part 121a on the Z-axis positive direction side and the X-axis positive direction side, or a part of the first cover wall part 121a. It is a part of the end on the Z-axis plus direction side and the X-axis plus direction side. The opening/closing regulating section 125b regulates opening/closing of the cover section 120 with respect to the substrate holding section 110 by disposing the positive electrode power cable 31 in the negative direction of the Y-axis. Specifically, the opening/closing regulating section 125b regulates rotation of the cover section 120 with respect to the substrate holding section 110. Further, in this case, the opening/closing regulating section 125b also regulates the rotation of the substrate holding section 110 with respect to the substrate unit mounting section 16.

The inclined portion 125c is a flat rectangular wall portion that is disposed between the first recess 125a and the opening/closing regulating portion 125b and is inclined with respect to the opening/closing regulating portion 125b. Specifically, the inclined portion 125c is arranged to be inclined such that the more it goes in the positive direction of the X-axis, the more it goes in the negative direction of the Y-axis. When the positive power cable 31 placed in the first recess 125a is placed in the negative Y-axis direction of the opening/closing regulating part 125b, the positive power cable 31 is also placed in the negative Y-axis direction of the inclined part 125c.

The cable regulating section 125d is a flat rectangular wall section parallel to the XY plane, which is arranged between the first recessed section 125a and the opening/closing regulating section 125b and in the Z-axis plus direction of the inclined section 125c. That is, the cable regulating portion 125d is arranged to protrude in the negative direction of the X-axis and the negative direction of the Y-axis. When the positive power cable 31 placed in the first recess 125a is placed in the negative Y-axis direction of the opening/closing restriction part 125b, the positive power cable 31 is placed in the negative direction of the Z-axis of the cable restriction part 125d. Thereby, the cable regulating portion 125d regulates the movement of the positive power cable 31 in the Z-axis plus direction (second direction intersecting the first direction).

In the above configuration, as shown in FIG. 10, a plurality of power storage devices 1 are attached to a shelf board 2 of a rack, and the positive electrode power cable 31 of one power storage device 1 (for example, power storage device 1a) is connected to another power storage device. Connect to the negative power supply cable 32 of the device 1 (for example, power storage device 1b). Specifically, in two power storage devices 1a and 1b arranged in the Z-axis direction, connector 33 connected to positive power cable 31 of power storage device 1a is connected to connector 34 connected to negative power cable 32 of power storage device 1b. Connect to.

In this case, the length etc. of the positive power supply cable 31 of the power storage device 1a are adjusted so that it cannot be connected to the negative power supply cable 32 of the power storage device 1b unless it passes through the opening/closing restriction section 125b in the Y-axis negative direction. That is, one end of the positive power cable 31 is electrically connected to the power storage unit 10 of one power storage device 1, and the other end is connected to an external conductive member (negative power cable 32 of another power storage device 1). Connected. The opening/closing regulating portion 125b is arranged in the positive direction of the Y-axis of the positive power cable 31 in a state where the positive power cable 31 is connected to the external conductive member.

In this way, when the positive power cable 31 is connected to an external conductive member, the cover part 120 is configured such that at least a part (opening/closing regulating part 125b) of the positive power cable 31 is connected to the Y-axis positive direction (the first direction). is arranged in the opposite direction). That is, the positive power supply cable 31 protrudes from the power storage unit 10, extends in the negative direction of the Y-axis (first direction), and is disposed within the first recess 125a. The positive power cable 31 is disposed in the negative Y-axis direction (first direction) of at least a portion of the cover portion 120 (the inclined portion 125c and the opening/closing regulating portion 125b), and is connected to an external conductive member. Thereby, the opening/closing (rotation) of the cover part 120 with respect to the board holding part 110 is restricted, and the movement of the positive power supply cable 31 in the positive direction of the Z-axis is also restricted by the cable restriction part 125d.

[3. Explanation of effects]
As described above, the power storage device 1 according to the embodiment of the present invention includes the power storage unit 10 having the power storage element 11 and the board unit 20 having the board 200 and the board accommodating portion 100 and being attached to the power storage unit 10. In addition, the board housing section 100 of the board unit 20 has a grip section 115 for gripping the power storage device 1 . In this way, by providing the gripping part 115 in the board storage part 100 of the board unit 20, it is possible to prevent the power storage device 1 from being gripped because the board unit 20 gets in the way, or to avoid the board unit 20 and grip the power storage device 1. However, there is no need to end up with a complicated structure. Thereby, power storage device 1 can be easily gripped using grip portion 115, so power storage device 1 can be easily moved (lifted, pulled out, etc.). For example, as shown in FIG. 10, the work of lifting the power storage device 1 to carry it to the shelf board 2 of the rack, and the work of placing the power storage device 1 on the shelf board 2 and then pushing it in or pulling it out. Work can be done easily.

Further, in the power storage device 1, if the grip portion can be provided on the exterior body support 15 by sheet metal processing, the grip portion can be easily provided, but in order to attach the power storage device 1 to the shelf board 2 of the rack, The exterior body support 15 is provided with a wall portion 16b. For this reason, it is not possible to easily provide a grip portion on the exterior body support 15, and it is necessary to attach a grip portion of a separate member. For this reason, by providing the gripping part 115 in the board accommodating part 100 of the board unit 20, the number of parts does not increase and the gripping part 115 can be easily configured.

Note that in the substrate unit 20, the substrate 200 is fixed to the substrate holding part 110 by press fitting. For this reason, even if the board unit 20 is slightly deformed by gripping the gripping part 115, the board 200 can move relative to the board holding part 110, so damage such as deformation of the board 200 can be suppressed. can.

Furthermore, since the substrate unit 20 is attached to the end of the power storage unit 10 in the longitudinal direction (Y-axis direction), the grip portion 115 is also attached to the end of the power storage unit 10 in the longitudinal direction. Thereby, power storage device 1, which is a heavy object, can be gripped in the longitudinal direction, so power storage device 1 can be stably gripped, and power storage device 1 can be easily moved.

Furthermore, at least a portion of the grip portion 115 of the board unit 20 (the first board side attachment portion 112) is located closer to the bottom portion 15a of the power storage device 1 than at least a portion of the power storage unit 10 (the first power storage side attachment portion 16a). Placed. This restricts the movement of the grip 115 relative to the power storage unit 10 when the user tries to lift the power storage device 1 by holding the grip 115. When grip portion 115 is restricted from moving relative to power storage unit 10, board unit 20 is prevented from coming off from power storage unit 10. In this way, when moving power storage device 1 by holding grip portion 115, it is possible to prevent substrate unit 20 from coming off from power storage unit 10, so power storage device 1 can be easily moved. .

Further, since the board unit 20 is connected to the power storage unit 10 on the bottom 15a side, the fulcrum of the force that is applied when the power storage device 1 is moved by gripping the gripping part 115 is the fulcrum of the board unit 20. It will be located on the bottom 15a side, that is, at a location away from the substrate 200. In this case, by setting the point of effort at a position in the Z-axis minus direction (downward) from the fulcrum, the point of action becomes at a position in the Z-axis plus direction (upward) from the fulcrum. Here, the position of the first board side attachment part 112 (the position of the first power storage side attachment part 16a) is the fulcrum, and the position of the pad of the fingertip inserted by the operator into the grip part recess 115b is the point of effort.

For example, assume a situation where the power storage device 1 is pulled and moved toward you (in the negative direction of the Y-axis) when replacing the power storage device 1 or the like. In this case, the operator inserts a finger into the grip recess 115b of the grip 115 of the board unit 20 and pulls it toward the user to move the power storage device 1. At this time, if the position (point of force) of the finger is located in the negative Z-axis direction relative to the position (fulcrum) of the first board side attachment part 112, the upper part of the board unit 20 becomes the point of action, and the power storage unit 10 Acts in the pushing direction (Y-axis positive direction). If the position of the finger (point of force) is located above the position (fulcrum) of the first board-side attachment part 112, the board unit 20 will rotate as shown in FIG. trying to come off. On the other hand, when the position (point of force) of the finger is located below the position (fulcrum) of the first board-side attachment part 112, the board unit 20 presses the power storage unit 10, so that the board unit 20 is prevented from coming off from the power storage unit 10.

In addition, in order to arrange the position of the finger (point of force) below the position (fulcrum) of the first board side attachment part 112, the grip part recess 115b is recessed only to a relatively low position in the Z-axis direction. It is preferable not to. In this embodiment, the gripping part recess 115b is recessed to a position slightly higher than the first board side mounting part 112, but in the case where the grip part recessed part 115b is recessed to a position slightly higher than the first board side mounting part 112, The recess may only be recessed to a position lower than the position of the mounting portion 112.

In addition, since the gripping recess 115b is formed on the surface of the gripping portion 115 of the board unit 20 on the power storage unit 10 side, the operator's fingers or the like cannot be inserted between the gripping portion 115 and the power storage unit 10. This makes it easier to grip the grip portion 115. Thereby, power storage device 1 can be easily held, and therefore power storage device 1 can be easily moved.

Furthermore, since the inclined surface 115a is formed on the surface of the gripping part 115 of the board unit 20 on the power storage unit 10 side, it is easy to insert the fingers of the operator's hand between the gripping part 115 and the power storage unit 10. Therefore, the grip portion 115 can be easily gripped. Thereby, power storage device 1 can be easily held, and therefore power storage device 1 can be easily moved.

The power storage device 1 also includes a power storage unit 10 having a power storage element 11 and a board unit 20 having a board 200 and a board accommodating part 100 and attached to the power storage unit 10. In the board accommodating part 100, a cover part 120 has a first cover side attachment part 122 that is rotatably attached to the substrate holding part 110. In this way, since the cover part 120 is rotatably attached to the substrate holding part 110, the cover part 120 can be easily rotated with respect to the substrate holding part 110, so that the substrate 200 can be easily rotated. On the other hand, the cover portion 120 can be easily opened and closed. As a result, the board 200 can be easily accessed, so that work such as maintenance of the board 200 (installation, repair, or replacement of the board 200, etc.) can be easily performed. This is extremely effective in assembly work, maintenance work, etc. when the number of power storage devices 1 is large. The same applies to the following.

Further, when the first cover side attachment part 122 of the cover part 120 is arranged on the opposite side (upper side) to the bottom part 15a side of the power storage device 1, the cover part 120 is rotated with respect to the board holding part 110. In this case, it is necessary to lift the cover part 120, which may make it difficult to perform maintenance work on the board 200 or the like. For this reason, the first cover-side attachment part 122 is arranged on the bottom 15a side (lower side) of the power storage device 1 in the cover part 120. As a result, the first cover-side attachment portion 122 rotates on the bottom 15a side of the power storage device 1, so that work such as maintenance of the board 200 can be easily performed.

Further, in the substrate accommodating section 100, the first cover side attachment section 122 of the cover section 120 is located closer to the direction from the cover section 120 toward the substrate holder 110 than the first holder side attachment section 113 of the substrate holder 110. Placed. As a result, even if the cover part 120 tries to detach from the board holding part 110, the movement of the first cover side mounting part 122 is restricted by the first holding part side mounting part 113, so that the cover part 120 is removed from the board holding part 110. It can prevent it from coming off. Furthermore, when the first cover side mounting part 122 is rotated by 90 degrees with respect to the first holding part side mounting part 113, the first cover side mounting part 122 is arranged above the first holding part side mounting part 113. , it is possible to suppress the cover part 120 from falling from the substrate holding part 110.

Further, the cover section 120 of the substrate accommodating section 100 has, in addition to the first cover side attachment section 122 , a second cover side attachment section 123 that engages with the substrate holding section 110 . Thereby, the cover part 120 can be attached to the substrate holding part 110 using both the first cover side attachment part 122 and the second cover side attachment part 123, so that the cover part 120 can be attached to the substrate holding part 110. can be attached more firmly.

Further, in the substrate storage section 100, the cover section 120 has the rotation restriction section 127 that restricts rotation relative to the substrate holding section 110, so that the rotation of the cover section 120 relative to the substrate holding section 110 is restricted. Ru. Thereby, it is possible to prevent the cover part 120 from rotating too much and contacting other members or falling from the board holding part 110, so that work such as maintenance of the board 200 can be easily performed. I can do it.

Further, the power storage device 1 includes a power storage unit 10 having a power storage element 11 and a board unit 20 having a board 200 and a board holding part 110 and being attached to the power storage unit 10 . It has a first board-side mounting part 112 that is rotatably mounted to the board. In this way, the board holding part 110 of the board unit 20 is rotatably attached to the power storage unit 10, so that the board unit 20 can be easily rotated with respect to the power storage unit 10. Thereby, the board unit 20 can be easily moved and attached/detached to the power storage unit 10, so that work on the board 200 can be easily performed. This is extremely effective in assembly work, maintenance work, etc. when the number of power storage devices 1 is large. The same applies to the following.

Furthermore, if the first board-side attachment part 112 of the board holding part 110 is arranged on the opposite side (upper side) from the bottom 15a side of the power storage device 1, when the board unit 20 is rotated with respect to the power storage unit 10, In this case, it is necessary to lift the board unit 20. For this reason, the first board-side attachment part 112 is arranged on the bottom 15a side (lower side) of the power storage device 1 in the board holding part 110. As a result, the first board-side attachment part 112 rotates on the bottom 15a side of the power storage device 1, so that the board unit 20 can be easily moved or attached to or removed from the power storage unit 10, and Work can be done easily.

In addition, since the first board side attachment part 112 is arranged closer to the bottom part 15a of the power storage device 1 than the first power storage side attachment part 16a of the power storage unit 10, the power storage device 1 can be lifted up by gripping the board unit 20. In such a case, movement of the first board-side mounting portion 112 with respect to the power storage unit 10 is restricted. Thereby, it is possible to suppress the movement of the first board side attachment part 112 with respect to the power storage unit 10 and the board unit 20 coming off from the power storage unit 10 . In addition, the board unit 20 can be easily removed from the power storage unit 10 by moving (pulling out) the first board side attachment portion 112 from the first power storage side attachment portion 16a toward the bottom portion 15a.

In addition to the first substrate-side attachment portion 112, the substrate holding portion 110 includes a second substrate-side attachment portion 114a that engages with the power storage unit 10. As a result, the board unit 20 can be attached to the power storage unit 10 using both the first board-side mounting part 112 and the second board-side mounting part 114a, so that the board unit 20 can be attached to the power storage unit 10 more easily. Can be firmly attached.

Moreover, when the board unit 20 has the cover part 120 attached to the board holding part 110, it is preferable that the board 200 can be easily accessed when working on the board 200. For this reason, the cover section 120 is provided with a first cover-side attachment section 122 that is rotatably attached to the substrate holding section 110. Thereby, the substrate 200 can be easily accessed by rotating the cover section 120 relative to the substrate holding section 110 to open and close it, so that work on the substrate 200 can be easily performed.

Further, in the power storage device 1, the substrate holding section 110 that holds the substrate 200 has a fixing section 116 that fixes the substrate 200 in a press-fitted state. In this way, by fixing the board 200 to the board holding part 110 by press fitting, there is no need to perform work such as attaching or removing screws, so the board 200 can be easily attached to and removed from the board holding part 110. be able to. Further, by fixing the board 200 to the board holding part 110 by press fitting, a member such as a screw is not required, so that the number of parts can be reduced.

Further, the fixing part 116 of the substrate holding part 110 is a protrusion that becomes thinner toward the tip, and when it is press-fitted into the through hole 230 of the substrate 200, the fixing part 116 of the substrate holding part 110 is located at a position where the substrate 200 is separated from the opposing surface of the substrate holding part 110. Fix it with. In this way, by providing the tapered protrusion on the substrate holder 110 and press-fitting the protrusion into the through hole 230 of the substrate 200, it is possible to easily attach and detach the substrate 200 to and from the substrate holder 110 with a simple configuration. can do. Furthermore, by fixing the substrate 200 at a position spaced apart from the opposing surface of the substrate holding section 110, components can also be placed on the back surface (the surface on the opposing surface side) of the substrate 200.

Further, when the board surface of the board 200 is oriented in a direction intersecting the vertical direction, it is difficult to attach and detach the board 200 to and from the board holding part 110 when the board 200 is fixed with screws or the like. Therefore, by press-fitting the substrate 200 into the substrate holding section 110 using the fixing section 116, the substrate 200 can be easily attached to and removed from the substrate holding section 110 with a simple configuration. This is extremely effective in assembly work, maintenance work, etc. when the number of power storage devices 1 is large.

Further, since the substrate 200 is fixed to the fixing section 116 of the substrate holding section 110 by press fitting instead of screwing, there is a risk that the substrate 200 may come off from the fixing section 116. For this reason, the cover section 120 attached to the substrate holding section 110 is provided with a substrate regulating section 126 that regulates the movement of the substrate 200 toward the cover section 120 side. Thereby, the substrate 200 fixed to the fixing part 116 of the substrate holding part 110 by press fitting can be prevented from coming off from the fixing part 116.

Further, since the cover part 120 is rotatably attached to the substrate holding part 110, by rotating the cover part 120 with respect to the substrate holding part 110, the cover part 120 can be attached to the substrate holding part 110. It can be easily opened and closed. Thereby, even when the cover section 120 is attached to the substrate holding section 110, the substrate 200 can be easily attached to and removed from the substrate holding section 110.

Furthermore, the connectors 210 and 220 of the board 200 are arranged at an end on a side different from the side on which the shaft around which the cover part 120 rotates with respect to the board holding part 110 is located. Therefore, when rotating the cover part 120, it is possible to prevent the connectors 210 and 220 or the cables connected to the connectors 210 and 220 from getting in the way. This allows the cover part 120 to be easily rotated, such as being able to rotate the cover part 120 with the cables attached to the connectors 210 and 220. Can be easily attached and detached.

Furthermore, since the connector 210 is disposed at the end of the board 200 on the Z-axis plus direction side, and the insertion port faces in the Z-axis plus direction (a direction parallel to the plate surface of the board 200), the connector 13b It is easy to attach and detach the cable 13a, and the cable 13a is not placed on the surface of the board 200. Thereby, the substrate 200 can be easily attached to and detached from the substrate holder 110.

Further, the cover part 120 disposed in the negative Y-axis direction (first direction) of the board 200 is configured such that at least a part of the cover part 120 is disposed in the Y-axis direction (first direction) of the positive power supply cable 31 when the positive power supply cable 31 is connected to an external conductive member. It is arranged in the positive direction of the axis (the opposite direction to the first direction). In this way, with the cover part 120 disposed outside the substrate 200 and the positive electrode power cable 31 connected to an external conductive member (the negative electrode power cable 32 of the adjacent power storage device 1, etc.), the cover part 120 At least a portion (opening/closing regulating portion 125b) of the positive electrode power cable 31 is disposed inside the positive power cable 31 (in the Y-axis positive direction). As a result, when opening the cover part 120, the positive power supply cable 31 becomes an obstacle, making it impossible to open the cover part 120. In other words, the cover part 120 cannot be opened unless the positive power cable 31 is removed from the external conductive member (in the above embodiment, the connector 34 of the negative power cable 32 of the other power storage device 1) and the positive power cable 31 is moved. Therefore, it is not possible to perform work on the board 200. Therefore, before performing work on board 200, positive electrode power cable 31 of power storage device 1 and external conductive member are disconnected, so safety can be improved. In other words, when a power storage facility is configured by connecting a plurality of power storage devices 1 in which a plurality of power storage elements 11 are connected in series, the total voltage of the power storage facility is a high voltage of, for example, several hundred to several thousand volts. When performing maintenance or other work under such high voltage, the power cable can be reliably removed, so safety can be improved.

In addition, in the power storage device 1 , the positive power supply cable 31 protrudes from the power storage unit 10 and extends in the Y-axis negative direction, thereby crossing the cover portion 120 in the Y-axis negative direction and extending over at least a portion of the cover portion 120 in the Y-axis negative direction. and is connected to an external conductive member. In this way, the positive power cable 31 is arranged so as to wrap around (embrace) at least a portion of the cover portion 120. Thereby, it is possible to prevent the cover part 120 from opening in a state where the positive power supply cable 31 is connected to an external conductive member, so that safety can be improved.

Further, by arranging the positive power cable 31 in the first recess 125a recessed in the Z-axis negative direction (second direction) of the cover part 120, the positive power cable 31 can be positioned with respect to the cover part 120. Therefore, the positive power cable 31 can be stably arranged in at least a portion of the cover portion 120 in the negative Y-axis direction. Thereby, it is possible to prevent the cover part 120 from opening in a state where the positive power supply cable 31 is connected to an external conductive member, so that safety can be improved.

In addition, the cover section 120 restricts the movement of the positive power cable 31 in the Z-axis positive direction (second direction) by the cable regulating section 125d, so that the positive power cable 31 is prevented from moving from the Y-axis negative direction of the cover section 120. It is possible to prevent this from happening. Thereby, it is possible to prevent the cover part 120 from opening in a state where the positive power supply cable 31 is connected to an external conductive member, so that safety can be improved.

Furthermore, since the cover section 120 is rotatably attached to the substrate holding section 110, in order to open the cover section 120 and remove the substrate 200, the cover section 120 is rotated relative to the substrate holding section 110. need to be moved. However, if at least a portion of the cover section 120 is disposed in the positive direction of the Y-axis of the positive power cable 31, the cover section 120 cannot be rotated. Thereby, the cover portion 120 cannot be opened unless the positive electrode power cable 31 is removed from the external conductive member and the positive electrode power cable 31 is moved, so that safety can be improved.

[4 Description of modification]
Although the power storage device 1 according to the present embodiment has been described above, the present invention is not limited to the above embodiment. In other words, the embodiments disclosed this time are illustrative and not restrictive in all respects, and the scope of the present invention is indicated by the claims, and within the meaning and scope equivalent to the claims. Includes all changes made.

For example, in the embodiment described above, the board unit 20 is attached to the end of the power storage unit 10 in the longitudinal direction (Y-axis direction). However, the board unit 20 may be attached to the end of the power storage unit 10 in the X-axis direction or the Z-axis direction.

Further, in the above embodiment, the first holding part side mounting part 113 of the board holding part 110 and the first cover side mounting part 122 of the cover part 120 are located on the bottom part 15a side of the power storage device 1 (Z-axis negative direction side). It was assumed that the However, the first holding part side attachment part 113 and the first cover side attachment part 122 may be arranged at any position, such as on the Z-axis plus direction side or the center part in the Z-axis direction.

Further, in the above embodiment, the first holding part side mounting part 113 of the board holding part 110 is a shaft body, and is inserted and arranged from the open side of the first cover side mounting part 122 of the cover part 120. I decided to do so. However, the shapes of the first holding part side attachment part 113 and the first cover side attachment part 122 are not particularly limited. For example, the first cover side attachment part 122 may be open in any direction, or it may be a through hole with no opening, into which the first holding part side attachment part 113 is inserted. good. Alternatively, the first holding part side mounting part 113 and the first cover side mounting part 122 have opposite configurations, that is, the first cover side mounting part 122 is a shaft body, and the first holding part side mounting part 122 is a shaft body. It may also be inserted into the section 113. Furthermore, the cover section 120 does not need to be rotatably attached to the substrate holding section 110.

Further, in the embodiment described above, the cover section 120 includes a first cover-side attachment section 122 and a second cover-side attachment section 123 that are attached to the substrate holding section 110. However, the cover part 120 does not need to have the second cover-side attachment part 123 or the first cover-side attachment part 122. The same applies to the substrate holding section 110 side. Moreover, the cover part 120 does not need to have the rotation regulating part 127.

Furthermore, in the embodiment described above, the first board-side mounting portion 112 of the board holding portion 110 and the first power storage-side mounting portion 16a of the power storage unit 10 are located on the bottom 15a side (Z-axis negative direction side) of the power storage device 1. It is assumed that it has been placed. However, the first board-side attachment part 112 and the first power storage-side attachment part 16a may be arranged at any position, such as on the positive Z-axis side or in the center in the Z-axis direction.

Further, in the embodiment described above, the first board-side mounting part 112 of the board holding part 110 is a shaft body, and the first power storage-side mounting part 16a of the power storage unit 10 is open at the Z-axis negative direction side. , the first board-side attachment portion 112 is inserted and disposed in the first power storage-side attachment portion 16a. However, the shapes of the first board side attachment part 112 and the first power storage side attachment part 16a are not particularly limited. For example, the first power storage side attachment part 16a may be open in any direction, or may be a through hole with no opening, into which the first board side attachment part 112 is inserted. . Alternatively, the first board-side mounting part 112 and the first power storage-side mounting part 16a have opposite configurations, that is, the first power storage-side mounting part 16a is a shaft body, and the first board-side mounting part 112 It may also be inserted into the Further, substrate holding section 110 does not need to be rotatably attached to power storage unit 10.

Further, in the embodiment described above, the substrate holding section 110 has the first substrate side attachment section 112 and the second substrate side attachment section 114a that are attached to the power storage unit 10. However, the substrate holding section 110 does not need to have the second substrate side attachment section 114a or the first substrate side attachment section 112. The same applies to the power storage unit 10 side.

Further, in the embodiment described above, the fixing part 116 of the substrate holding part 110 is a protrusion that becomes thinner toward the tip, and the substrate 200 is fixed at a position spaced apart from the opposing surface of the substrate holding part 110. However, the fixing part 116 does not have to have a tapered shape, and may fix the substrate 200 in a state where it is in contact with the opposing surface of the substrate holding part 110.

Further, in the above embodiment, the substrate 200 is fixed in a posture with the plate surface facing in a direction intersecting the vertical direction. However, the substrate 200 may be fixed with the plate surface facing in the vertical direction (in the horizontal direction).

Further, in the embodiment described above, the cover section 120 has the substrate regulating section 126. However, as long as the board 200 can be firmly fixed by the fixing part 116, the cover part 120 does not need to have the board regulating part 126. Alternatively, instead of the cover section 120 having the substrate regulating section 126, the substrate 200 may be fixed to the fixing section 116 or the like using an adhesive or the like.

Further, in the embodiment described above, the connectors 210 and 220 of the board 200 are arranged at the end portion of the side different from the side on which the shaft around which the cover part 120 rotates with respect to the board holding part 110 is located. may be placed on one side of the axis.

Further, in the embodiment described above, the substrate holding section 110 has the fixing section 116 that fixes the substrate 200 in a press-fitted state. However, the substrate holder 110 may fix the substrate 200 with screws or the like instead of being press-fitted.

Further, in the embodiment described above, the opening/closing regulating portion 125b of the cover portion 120 is arranged in the positive direction of the Y-axis of the positive power cable 31 (the opposite direction to the first direction). However, the opening/closing regulating portion 125b may be arranged in the positive Y-axis direction of a cable other than the positive power cable 31, such as the negative power cable 32 or the communication cable. Alternatively, the cover section 120 may not have the cable regulating section 125d, and further may not have the opening/closing regulating section 125b.

Further, in the embodiment described above, the negative electrode power cable 32 of the adjacent power storage device 1 is illustrated as an external conductive member to which the positive electrode power cable 31 is connected. However, the external conductive members include positive power cables 31 of adjacent power storage devices 1, negative power cables 32 or positive power cables 31 of non-adjacent power storage devices 1, external control devices that control the plurality of power storage devices 1, etc. , various examples can be given.

Further, in the above embodiment, the substrate accommodating section 100 has the substrate holding section 110 and the cover section 120, but it is assumed that the substrate accommodating section 100 does not have the cover section 120. Good too. Alternatively, the substrate storage section 100 may not include the substrate holding section 110. In this case, the substrate 200 only needs to be attached to the cover part 120, and the grip part 115 only needs to be provided to the cover part 120. Note that even when the substrate storage section 100 has the substrate holding section 110, the substrate 200 may be attached to the cover section 120, and the grip section 115 may be provided on the cover section 120. You may also do so. In other words, the gripping part 115 only needs to be provided in the substrate accommodating part 100.

Further, in the above embodiment, the gripping portion 115 of the substrate unit 20 is formed with the inclined surface 115a and the gripping portion recess 115b. However, the grip portion 115 may not have at least one of the inclined surface 115a and the grip recess 115b.

Further, forms constructed by arbitrarily combining the constituent elements included in the above embodiments and their modifications are also included within the scope of the present invention.

Furthermore, the present invention can be realized not only as the power storage device 1 but also as a substrate accommodating section 100 having the grip section 115 or a substrate unit 20 having the substrate accommodating section 100.

The present invention can be applied to a power storage device including a power storage element such as a lithium ion secondary battery.

1, 1a, 1b Power storage device 2 Shelf board 10 Power storage unit 11 Power storage element 11a Container 11b Positive terminal 11c Negative terminal 11d Spacer 12 Busbar frame 13 Busbar 13a, 30 Cable 13b, 33, 34, 210, 220 Connector 14 Exterior main body 15 Exterior body support 15a Bottom part 15b, 15c, 17b, 17c Connection part 16 Board unit attachment part 16a First electricity storage side attachment part 16b Wall part 16c Second electricity storage side attachment part 16d, 124 Opening part 17 Exterior body lid body 17a Top surface part 18 Exterior body 20 Board unit 31 Positive electrode power cable 32 Negative electrode power cable 100 Board storage part 110 Board holding part 111 Holding part main body 111a First holding part wall part 111b Second holding part wall part 112 First board side mounting part 113 First Holding part side mounting part 114 Upper mounting part 114a Second board side mounting part 114b Second holding part side mounting part 115 Gripping part 115a Inclined surface 115b Gripping part recess 116 Fixing part 120 Cover part 121 Cover part main body 121a First cover wall part 121b Second cover wall part 122 First cover side attachment part 123 Second cover side attachment part 123a Projection 125 Cable arrangement part 125a First recessed part 125b Opening/closing regulation part 125c Inclined part 125d Cable regulation part 126 Board regulation part 127 Rotation regulation part 200 board 230 through hole

Claims (5)

A power storage device including a power storage unit having a power storage element,
A board unit that is attached to the power storage unit and has a board that is electrically connected to the power storage unit, and a board accommodating part that accommodates the board,
The board unit is located at an end of the power storage device,
The board accommodating section is attached to an end of the power storage unit,
The board accommodating part has a grip part for gripping the power storage device, which is a protruding part provided in the board accommodating part. A power storage device. The power storage device according to claim 1, wherein the substrate unit is attached to a longitudinal end of the power storage unit. The power storage device according to claim 1 , wherein at least a portion of the grip portion is arranged closer to the bottom of the power storage device than at least a portion of the power storage unit. The power storage device according to any one of claims 1 to 3, wherein the grip portion has a recessed portion recessed in a direction opposite to the power storage unit on a surface facing the power storage unit. The power storage device according to any one of claims 1 to 4, wherein the gripping portion has an inclined surface on a surface facing the power storage unit that slopes in a direction opposite to the power storage unit toward the bottom of the power storage device. .

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