Power storage panel

Abstract

The power storage panel 10 comprises a power storage device 200 equipped with power storage elements, a housing 100 that houses the power storage device, and a support member 300 that supports the power storage device 200. The support member 300 is positioned in contact with the side walls 110 and 120 of the housing. Through holes 170 are formed in the side walls 110 and 120 into which the support member 300 is inserted. [Effect] According to the power storage panel, an internal space is formed in the support member that supports the power storage device, which connects to a through-hole in the side wall of the housing. This allows heat from the support member to be dissipated through this internal space. As a result, the heat dissipation of the power storage device can be improved, and the temperature rise of the power storage device can be suppressed with a simple configuration.

Description

Technical Field

[0001] The present invention relates to a storage battery tray.

Background Art

[0002] Patent Document 1 discloses a battery tray including a case for accommodating cells and a heat sink. The heat sink includes a plurality of fins arranged side by side so as to form a comb shape on the lower surface of the sink base, and includes a battery pack in which a plurality of fins form a fin group having a cross shape.

Prior Art Documents

Patent Documents

[0003]

Patent Document 1

Summary of the Invention

Problems to be Solved by the Invention

[0004] In the battery tray disclosed in Patent Document 1 above, the heat sink of the battery pack includes a plurality of fins, and the temperature rise of the battery pack is suppressed by the fin group formed by the plurality of fins. Thus, in this battery tray, since the configuration of the battery pack is complicated, it is desired to suppress the temperature rise of the battery pack with a simple configuration.

[0005] The present invention has been made by the inventors of the present application newly paying attention to the above problems, and an object thereof is to provide a storage battery tray capable of suppressing the temperature rise of a power storage device with a simple configuration.

Means for Solving the Problems

[0006] A storage battery tray according to an aspect of the present invention includes a power storage device including a power storage element, a housing that houses the power storage device, and a support member that supports the power storage device, and the support member is disposed in contact with a side wall of the housing.

Effects of the Invention

[0007] According to the power storage panel of the present invention, the temperature rise of the power storage device can be suppressed with a simple configuration. [Brief explanation of the drawing]

[0008] [Figure 1] Figure 1 is a perspective view showing the configuration of a power storage panel according to an embodiment. [Figure 2] Figure 2 is a perspective view showing the configuration of the energy storage device included in the energy storage panel according to the embodiment. [Figure 3] Figure 3 is a perspective view showing the configuration of the energy storage elements in the energy storage device according to the embodiment. [Figure 4] Figure 4 is a perspective view showing a configuration in which a support member according to the embodiment supports an energy storage device. [Figure 5] Figure 5 is a cross-sectional view showing the internal configuration of the housing of the power storage panel according to the embodiment. [Figure 6] Figure 6 is a side view showing the configuration of the power storage panel according to the embodiment when viewed from the side. [Figure 7] Figure 7 is a cross-sectional view showing the internal configuration of the housing of a power storage panel according to a modified example 1 of the embodiment. [Figure 8] Figure 8 is a perspective view showing a configuration in which a support member according to a modified example 2 of the embodiment supports an energy storage device. [Modes for carrying out the invention]

[0009] (1) A power storage panel according to one aspect of the present invention comprises a power storage device equipped with a power storage element, a housing for housing the power storage device, and a support member for supporting the power storage device, wherein the support member is positioned in contact with the side wall of the housing.

[0010] According to the power storage board according to one aspect of the present invention, a support member that supports the power storage device is disposed in contact with a side wall of a housing that houses the power storage device. In this way, when the support member contacts the side wall of the housing, the heat transmitted from the power storage device to the support member is radiated through the housing. Thereby, since the heat dissipation of the power storage device can be improved, the temperature rise of the power storage device can be suppressed with a simple configuration.

[0011] (2) In the power storage board according to (1) above, a through hole may be formed in the side wall, and the support member may be inserted into the through hole.

[0012] According to the power storage board according to (2) above, when the support member is inserted into the through hole formed in the side wall of the housing, the heat of the support member can be radiated through the through hole. By inserting the support member into the through hole in the side wall of the housing, the support member can be easily attached to the housing.

[0013] (3) In the power storage board according to (2) above, an internal space connected to the through hole may be formed in the support member.

[0014] According to the power storage board according to (3) above, since an internal space connected to the through hole in the side wall of the housing is formed in the support member, the heat of the support member can be radiated through the internal space.

[0015] (4) In the power storage board according to any one of (1) to (3) above, the support member may be a rod-shaped member extending from the side wall.

[0016] According to the power storage board according to (4) above, since the support member is a rod-shaped member extending from the side wall of the housing, the rod-shaped member has good air circulation around it, so the heat of the support member can be effectively radiated.

[0017] (5) In the power storage board according to any one of (1) to (4) above, the support member may support the central portion of the power storage device.

[0018] According to the power storage board described in (5) above, since the support member supports the central portion of the power storage device, heat can be dissipated from the central portion of the power storage device, so that the heat dissipation performance of the power storage device can be further improved.

[0019] (6) In the power storage board according to any one of (1) to (5) above, the power storage board may include a plurality of separate support members that support the power storage device, and each of the plurality of support members may be arranged in contact with the side wall of the housing.

[0020] According to the power storage board described in (6) above, each of the plurality of separate support members that support the power storage device is arranged in contact with the side wall of the housing. Thereby, since the heat of the power storage device can be dissipated through the plurality of support members, the heat dissipation performance of the power storage device can be further improved.

[0021] Hereinafter, with reference to the drawings, a power storage board according to an embodiment (including its modification) of the present invention will be described. Each of the embodiments described below shows a comprehensive or specific example. The numerical values, shapes, materials, components, arrangement positions and connection forms of the components, manufacturing processes, order of manufacturing processes, etc. shown in the following embodiments are merely examples and are not intended to limit the present invention. In each figure, dimensions and the like are not strictly shown. In each figure, the same or similar components are denoted by the same reference numerals.

[0022] In the following description and drawings, the X-axis direction is defined as the width direction of the power storage panel housing, the opposing directions of the left and right side walls of the housing, the direction of arrangement of multiple power storage devices supported by the support member, the short-side direction of the power storage device, the direction of arrangement of a pair of terminals (positive and negative) in a single power storage element, or the opposing direction of the short sides of the container of the power storage element. The Y-axis direction is defined as the depth direction of the power storage panel housing, the opposing directions of the front and rear side walls (front wall and rear wall) of the housing, the longitudinal direction of the power storage device, the direction of arrangement of multiple power storage elements provided by the power storage device, or the opposing direction of the long sides of the container of the power storage element. The Z-axis direction is defined as the height direction of the power storage panel housing, the opposing directions of the top and bottom walls of the housing, the direction of arrangement of the body and lid of the container of the power storage element, the vertical direction, or the up and down direction. These X-axis, Y-axis, and Z-axis directions intersect (orthogonal in this embodiment) with each other.

[0023] In the following explanation, the X-axis positive direction refers to the direction of the X-axis arrow, and the X-axis negative direction refers to the direction opposite to the X-axis positive direction. When simply referred to as the X-axis direction, it refers to either the X-axis positive direction or the X-axis negative direction, or either direction. Unless otherwise specified, the center and ends of a member in the X-axis direction refer to the parts located in the center and ends when the member is divided into three parts in the X-axis direction. The same applies to the Y-axis and Z-axis directions. Expressions indicating relative directions or orientations, such as parallel and orthogonal, include cases where they are not strictly those directions or orientations. When two directions are parallel (or orthogonal), it means not only that the two directions are perfectly parallel (or orthogonal), but also that they are substantially parallel (or orthogonal), i.e., that they include a difference of, for example, a few percent. In the following explanation, when "insulation" is used, it means "electrical insulation". The volume resistivity of an insulating material is 1 × 10⁻⁶ 6 Preferably, it is Ωm or higher, 1 × 10 7 Ωm or greater is more preferable, 1 × 10 10 A value of Ωm or higher is even more preferable.

[0024] (Embodiment) [1. Explanation of the power storage panel 10] The configuration of the power storage panel 10 in this embodiment will now be described. Figure 1 is a perspective view showing the configuration of the power storage panel 10 according to this embodiment. In Figure 1, the internal configuration of the housing 100 of the power storage panel 10 is shown by dashed lines.

[0025] The power storage panel 10 is equipment that charges and discharges electricity and supplies power to an external power load. The power storage panel 10 is a stationary battery used for commercial or household purposes, and is used for power storage or power supply purposes. The power storage panel 10 is a stationary electrical panel (power storage device panel, power storage element panel, battery panel) that stores various types of power, such as power from the commercial power grid, power generated by generators, wind power generation or solar power generation, and regenerative power from railway systems, and supplies power stably to external equipment. The power storage panel 10 can also be installed on large mobile vehicles such as ships or railway vehicles for electric railways, and can be used as a battery for driving or starting the engine of such large mobile vehicles. Examples of railway vehicles for electric railways include electric trains, monorails, linear motor cars, and hybrid trains equipped with both diesel engines and electric motors.

[0026] In this embodiment, the power storage panel 10 is an outdoor-specification device that is installed outdoors (or can be installed outdoors) and has the dustproof and waterproof properties necessary for outdoor installation. Specifically, the power storage panel 10 has a dustproof rating of IP2X, IP3X, IP4X, IP5X, or IP6X in the protection class (IP code) defined by the IEC (International Electrotechnical Commission) standards, and a waterproof rating of IPX3, IPX4, IPX5, IPX6, IPX7, or IPX8.

[0027] As shown in Figure 1, the power storage panel 10 has a rectangular parallelepiped shape. The power storage panel 10 comprises a housing 100, power storage devices 200, and support members 300. In this embodiment, within the housing 100, a plurality (six) of power storage devices 200, supported by the support members 300 (first support member 310, second support member 320, and third support member 330), are arranged in multiple rows in the Z-axis direction. As a result, the plurality of power storage devices 200 are arranged adjacent to each other in the X-axis and Z-axis directions. Thus, the power storage panel 10 does not have shelves within the housing 100, and the power storage devices 200 are supported by the support members 300. The number of power storage devices 200 supported by the support members 300 arranged in the X-axis direction, and the number of rows of power storage devices 200 and support members 300 arranged in the Z-axis direction, are not particularly limited.

[0028] In addition to these components, the power storage panel 10 also includes wires or busbars for connecting the multiple power storage devices 200, but these are not shown in the diagram and their detailed explanations are omitted. The multiple power storage devices 200 may all be connected in series, or a combination of series and parallel connections, or all may be connected in parallel. The power storage panel 10 may also include power converters, copper bars, circuit breakers, and other electrical equipment (electrical components).

[0029] [1.1 Description of enclosure 100] First, the configuration of the housing 100 will be described in detail. The housing 100 is a rectangular parallelepiped (box-shaped) housing (shelf, rack). As described above, the housing 100 houses the energy storage device 200 and the support member 300 inside. The support member 300 is attached to the housing 100, and the energy storage device 200 is supported by the support member 300. In this embodiment, the housing 100 has a sealed structure. "Having a sealed structure" means that it has a degree of airtightness that provides dustproof and waterproof properties as described above, and small gaps are permitted. The housing 100 is made of metal such as stainless steel, aluminum, aluminum alloy, iron, or plated steel sheet. The housing 100 may be made of materials other than metal (such as resin), but it is preferable that it be made of a material with high strength, heat resistance and flame retardancy. Furthermore, from the viewpoint of improving the heat dissipation performance of the energy storage device 200, it is preferable that the housing 100 be made of a material with high heat dissipation properties (high thermal conductivity, high thermal conductivity).

[0030] The housing 100 comprises side walls 110-140, a bottom wall 150, and a top wall 160. The side walls 110-140, the bottom wall 150, and the top wall 160 are flat, rectangular walls that cover the entire six surfaces of the housing 100. Side walls 110 and 120 are the left and right side walls of the housing 100, and side walls 130 and 140 are the front and rear side walls (front wall and rear wall) of the housing 100. Specifically, side wall 110 is the wall of the housing 100 in the positive X-axis direction, and side wall 120 is the wall of the housing 100 in the negative X-axis direction. Side wall 130 is the wall of the housing 100 in the negative Y-axis direction (front wall). Side wall 130 is a cover member (door) that can open and close (open and close freely) the opening on the surface (front) of the housing 100 in the negative Y-axis direction. The side wall 140 is the wall (rear wall) of the enclosure 100 in the positive Y-axis direction. The bottom wall 150 is the wall (bottom wall) of the enclosure 100 in the negative Z-axis direction. The top wall 160 is the wall (top wall) of the enclosure 100 in the positive Z-axis direction.

[0031] Through holes 170 are formed in the side walls 110 and 120. The through holes 170 are through holes into which the support members 300 are inserted. Specifically, the side wall 110 has a through hole 171 into which the first support member 310 is inserted, a through hole 172 into which the second support member 320 is inserted, and a through hole 173 into which the third support member 330 is inserted (see Figure 5). The side wall 120 has a through hole 174 into which the first support member 310 is inserted, a through hole 175 into which the second support member 320 is inserted, and a through hole 176 into which the third support member 330 is inserted (see Figure 5).

[0032] Corresponding to the multiple first support members 310, multiple through holes 171 are arranged in the Z-axis direction at the Y-axis negative end of the side wall 110, and multiple through holes 174 are arranged in the Z-axis direction at the Y-axis negative end of the side wall 120. Corresponding to the multiple second support members 320, multiple through holes 172 are arranged in the Z-axis direction at the Y-axis positive end of the side wall 110, and multiple through holes 175 are arranged in the Z-axis direction at the Y-axis positive end of the side wall 120. Corresponding to the multiple third support members 330, multiple through holes 173 are arranged in the Z-axis direction at the Y-axis center of the side wall 110, and multiple through holes 176 are arranged in the Z-axis direction at the Y-axis center of the side wall 120.

[0033] The shape and size of the through holes 171 to 176 are not particularly limited. In this embodiment, the through holes 171 and 174 correspond to the shape and size of the first support member 310, being rectangular when viewed from the X-axis direction and having the same size as the outer shape of the first support member 310. The through holes 172 and 175 correspond to the shape and size of the second support member 320, being rectangular when viewed from the X-axis direction and having the same size as the outer shape of the second support member 320. The through holes 173 and 176 correspond to the shape and size of the third support member 330, being rectangular when viewed from the X-axis direction and having the same size as the outer shape of the third support member 330.

[0034] In Figure 1, the support members 300 and the energy storage devices 200 are not shown in the space below the housing 100, but the support members 300 and the energy storage devices 200 may be arranged in the space below the housing 100, or the energy storage devices 200 may be arranged on the bottom wall 150. Electrical equipment such as circuit boards that control each energy storage device 200 may be arranged in the space below the housing 100. The electrical equipment may be arranged in the space above the housing 100, and the wiring connected to the electrical equipment may be routed out from the top of the housing 100.

[0035] [1.2 Description of the Energy Storage Device 200] Next, the configuration of the energy storage device 200 will be described in detail. Figure 2 is a perspective view showing the configuration of the energy storage device 200 provided in the energy storage panel 10 according to this embodiment. In Figure 2, the internal configuration of the outer casing 210 of the energy storage device 200 is shown by a dashed line. Since all of the multiple energy storage devices 200 provided in the energy storage panel 10 have the same configuration, Figure 2 shows one energy storage device 200. Figure 3 is a perspective view showing the configuration of the energy storage element 220 provided in the energy storage device 200 according to this embodiment. Since all of the multiple energy storage elements 220 provided in the energy storage device 200 have the same configuration, Figure 3 shows one energy storage element 220.

[0036] The energy storage device 200 is a battery module (battery pack) that is elongated in the Y-axis direction and has a roughly rectangular parallelepiped shape. As shown in Figure 2, the energy storage device 200 comprises an outer casing 210 and a plurality of energy storage elements 220. In this embodiment, the plurality of energy storage elements 220 are arranged in line in the Y-axis direction, but the direction of arrangement and the number of energy storage elements 220 are not particularly limited, and only one energy storage element 220 may be arranged. In addition to these components, the energy storage device 200 also comprises busbars for connecting the terminals of the plurality of energy storage elements 220, an exhaust path and exhaust port (exhaust pipe) for exhausting gas discharged from the energy storage elements 220, and a pair of external terminals (positive and negative electrodes) (or cables equivalent to external terminals) for connecting to the outside, but these are not shown in the illustration and their detailed explanation is omitted. The energy storage device 200 may also include spacers placed between the energy storage elements 220, restraining members (end plates, side plates, etc.) that constrain the energy storage elements 220, a busbar frame for positioning the busbars, and electrical equipment such as a circuit board for monitoring and controlling the charging and discharging states of the energy storage elements 220, but these are not shown or described.

[0037] The outer casing 210 is a box-shaped (approximately rectangular parallelepiped) container (module case) that is elongated in the Y-axis direction and constitutes the outer shell of the energy storage device 200. The outer casing 210 houses a plurality of energy storage elements 220 and fixes the plurality of energy storage elements 220 in predetermined positions, protecting them from impacts and the like. The outer casing 210 is made of an insulating material such as resin to prevent the energy storage elements 220 from coming into contact with external metal members, etc. The outer casing 210 may be made of a conductive material such as metal, as long as the insulating properties of the energy storage elements 220 are maintained.

[0038] The exterior body 210 comprises an exterior body main body 211, a first projection 212, and a second projection 213. The exterior body main body 211 is the main body of the exterior body 210 and is a long, box-shaped (rectangular parallelepiped) portion in the Y-axis direction that houses a plurality of energy storage elements 220. The first projection 212 is a plate-shaped portion parallel to the XY plane, protruding in the Y-axis direction from the center of the Z-axis direction at the Y-axis negative end of the exterior body main body 211 and extending in the X-axis direction. The second projection 213 is a plate-shaped portion parallel to the XY plane, protruding in the Y-axis positive direction from the center of the Z-axis direction at the Y-axis positive end of the exterior body main body 211 and extending in the X-axis direction.

[0039] The first protrusion 212 and the second protrusion 213 are parts that are positioned on the support member 300. Specifically, the first protrusion 212 is positioned on the first support member 310, and the second protrusion 213 is positioned on the second support member 320 (see Figure 4, etc.). As a result, the energy storage device 200 is supported by the support member 300. In this embodiment, the first protrusion 212 and the second protrusion 213 are integrally formed with the outer casing body 211, but at least one of the first protrusion 212 and the second protrusion 213 may be a separate component from the outer casing body 211. At least one of the first protrusion 212 and the second protrusion 213 may not be part of the outer casing 210, but may be a separate component from the outer casing 210. The first protrusion 212 and the second protrusion 213 only need to be able to be positioned on the support member 300, and their shape, size, number, etc., are not particularly limited.

[0040] The energy storage element 220 is a secondary battery (single cell) capable of charging and discharging electricity, and more specifically, a non-aqueous electrolyte secondary battery such as a lithium-ion secondary battery. In this embodiment, the energy storage element 220 has a flattened rectangular parallelepiped shape (square), but the shape of the energy storage element 220 is not limited to a rectangular parallelepiped shape, and may be a polygonal prism shape, cylindrical shape, oblong cylindrical shape, elliptical prism shape, etc. The energy storage element 220 may be a secondary battery other than a non-aqueous electrolyte secondary battery, or it may be a capacitor. The energy storage element 220 may be a primary battery. The energy storage element 220 may be a battery using a solid electrolyte. The energy storage element 220 may be a pouch-type energy storage element.

[0041] As shown in Figure 3, the energy storage element 220 comprises a container 221 and a pair of terminals 222 (positive and negative electrodes). Inside the container 221 are electrodes, a pair of current collectors (positive and negative electrodes), and an electrolyte (non-aqueous electrolyte), but these are not shown in the illustration. There are no particular restrictions on the type of electrolyte as long as it does not impair the performance of the energy storage element 220, and various types can be selected. Gaskets and the like are placed between the container 221, the terminals 222, and the current collectors to improve insulation and airtightness, but these are also not shown in the illustration.

[0042] The container 221 is a rectangular parallelepiped (square) shaped container, and the container lid 221b closes the opening of the container body 221a in the Z-axis positive direction. The material of the container 221 (container body 221a and container lid 221b) is not particularly limited, but it is preferably a weldable metal such as stainless steel, aluminum, aluminum alloy, iron, or plated steel sheet. Between a pair of terminals 222 on the container lid 221b of the container 221, a gas discharge valve 221c is arranged to discharge gas from inside the container 221 and release the pressure when the pressure inside the container 221 rises excessively. The container 221 (container lid 221b, etc.) may be provided with an injection section for injecting electrolyte into the container 221 during the manufacturing of the energy storage element 220.

[0043] Terminal 222 is an electrode terminal (positive electrode terminal and negative electrode terminal) electrically connected to the positive electrode plate and negative electrode plate of the electrode body via a current collector, and is formed of a metal (conductive) material such as aluminum, aluminum alloy, copper, or copper alloy. The electrode body is an energy storage element (power generation element) formed by laminating a positive electrode plate, a negative electrode plate, and a separator. The positive electrode plate has a positive electrode active material layer formed on a current collector foil made of a metal such as aluminum or an aluminum alloy. The negative electrode plate has a negative electrode active material layer formed on a current collector foil made of a metal such as copper or a copper alloy. As for the active material used in the positive electrode active material layer and the negative electrode active material layer, any known material can be used as long as it is capable of intercalating and releasing charge transport ions. The current collector is a conductive member (positive electrode current collector and negative electrode current collector) electrically connected to terminal 222 and the electrode body. The positive electrode current collector is made of aluminum or an aluminum alloy, similar to the current collector foil of the positive electrode plate, while the negative electrode current collector is made of copper or a copper alloy, similar to the current collector foil of the negative electrode plate.

[0044] [1.3 Explanation of support member 300] Next, the configuration of the support member 300 will be described in detail, with reference to Figures 4 to 6. Figure 4 is a perspective view showing the configuration in which the support member 300 according to this embodiment supports the energy storage device 200. Figure 4 shows an enlarged view of one energy storage device 200 and a part of the support member 300 (first support member 310, second support member 320, and third support member 330) that supports the energy storage device 200, as shown in Figure 1. Figure 5 is a cross-sectional view showing the internal configuration of the housing 100 of the energy storage panel 10 according to this embodiment. Figure 5 shows the configuration of the energy storage panel 10 shown in Figure 1 when cut by a plane passing through the VV line and parallel to the XY plane, and viewed from the Z-axis positive direction. Figure 6 is a side view showing the configuration of the energy storage panel 10 according to this embodiment when viewed from the side. Figure 6 shows the configuration of the energy storage panel 10 shown in Figure 1 when viewed from the X-axis positive direction.

[0045] As described above and as shown in Figures 4 to 6, the power storage panel 10 is equipped with a plurality of separate support members 300 that support the energy storage device 200. These plurality of separate support members 300 support both ends and the central part of the energy storage device 200 in the Y-axis direction. The support members 300 are formed from any material that can be used for the housing 100. In particular, the support members 300 are preferably made of a material with high strength, heat resistance and flame retardancy, similar to the housing 100, and are preferably made of a material with high heat dissipation (high thermal conductivity, high thermal conductivity) from the viewpoint of improving the heat dissipation of the energy storage device 200. Specifically, the power storage panel 10 is equipped with a first support member 310, a second support member 320, and a third support member 330 as the plurality of separate support members 300.

[0046] The first support member 310 is an elongated member (beam) in the X-axis direction, positioned at the Y-axis negative end of the housing 100, and supports the Y-axis negative end of the energy storage device 200. In this embodiment, the first support member 310 is positioned in contact with the first protrusion 212 of the outer casing 210 of the energy storage device 200 in the Z-axis negative direction, and supports the Y-axis negative end of the energy storage device 200 from below by supporting the first protrusion 212 from below. The first support member 310 extends in the X-axis direction across multiple (six) energy storage devices 200 arranged in the X-axis direction, and supports the Y-axis negative ends of these multiple (six) energy storage devices 200 from below.

[0047] The second support member 320 is an elongated member (beam) in the X-axis direction, positioned at the Y-axis positive end of the housing 100, and supports the Y-axis positive end of the energy storage device 200. In this embodiment, the second support member 320 is positioned in contact with the second protrusion 213 of the outer casing 210 of the energy storage device 200 in the Z-axis negative direction, and supports the Y-axis positive end of the energy storage device 200 from below by supporting the second protrusion 213 from below. The second support member 320 extends in the X-axis direction across multiple (six) energy storage devices 200 arranged in the X-axis direction, and supports the Y-axis positive ends of these multiple (six) energy storage devices 200 from below. The second support member 320 is positioned in the Z-axis direction at the same position (same height) as the first support member 310.

[0048] The third support member 330 is an elongated member (beam) in the X-axis direction, positioned in the center of the housing 100 in the Y-axis direction, and supports the center of the energy storage device 200 in the Y-axis direction. In this embodiment, the third support member 330 is positioned in contact with the center of the housing 210 of the energy storage device 200 in the Z-axis negative direction of the center of the housing 210 in the Y-axis direction, and supports the center of the housing 210 from below, thereby supporting the center of the energy storage device 200 in the Y-axis direction from below. The third support member 330 extends in the X-axis direction across multiple (six) energy storage devices 200 arranged in the X-axis direction, and supports the center of the multiple (six) energy storage devices 200 in the Y-axis direction from below. The third support member 330 is positioned between the first support member 310 and the second support member 320 in the Y-axis direction, and is positioned in the Z-axis negative direction (lower position) than the first support member 310 and the second support member 320 in the Z-axis direction.

[0049] The support members 300 are inserted into through holes 170 in the side walls 110 and 120 of the housing 100. Specifically, the first support member 310 has its X-axis positive end inserted into the through hole 171 of the side wall 110, and its X-axis negative end inserted into the through hole 174 of the side wall 120. The second support member 320 has its X-axis positive end inserted into the through hole 172 of the side wall 110, and its X-axis negative end inserted into the through hole 175 of the side wall 120. The third support member 330 has its X-axis positive end inserted into the through hole 173 of the side wall 110, and its X-axis negative end inserted into the through hole 176 of the side wall 120.

[0050] In this embodiment, the support member 300 is inserted to an intermediate position within the through-hole 170 in the X-axis direction, without penetrating the through-hole 170 in the X-axis direction (see Figure 5). That is, the first support member 310 is inserted to an intermediate position within the through-hole 171 in the X-axis direction, without penetrating the through-hole 171 in the X-axis direction (without protruding from the through-hole 171 in the X-positive direction). The first support member 310 is inserted to an intermediate position within the through-hole 174 in the X-axis direction, without penetrating the through-hole 174 in the X-axis direction (without protruding from the through-hole 174 in the X-negative direction). The same applies to the second support member 320 and the third support member 330. Any of the support members 300 may penetrate any of the through-holes 170 in the X-axis direction.

[0051] In this embodiment, the support member 300 has the same shape and size as the through hole 170 when viewed from the X-axis direction, and is press-fitted into the through hole 170. Specifically, the first support member 310 has its X-axis positive end press-fitted into the through hole 171 of the side wall 110, and its X-axis negative end press-fitted into the through hole 174 of the side wall 120. The same applies to the second support member 320 and the third support member 330. As a result, the support members 300 are positioned in contact with the side walls 110 and 120 of the housing 100. In other words, each of the multiple support members 300 (first support member 310, second support member 320, and third support member 330) is positioned in contact with the side walls 110 and 120 of the housing 100.

[0052] The support member 300 is a rod-shaped member extending from the side wall 110 of the housing 100. Specifically, the first support member 310 is a long, rectangular rod-shaped member that extends from the side wall 110 in the negative X-axis direction when viewed from the X-axis direction. The same applies to the second support member 320 and the third support member 330. In other words, the support member 300 is a rod-shaped member extending from the side wall 120 of the housing 100. Specifically, the first support member 310 is a long, rectangular rod-shaped member that extends from the side wall 120 in the positive X-axis direction when viewed from the X-axis direction. The same applies to the second support member 320 and the third support member 330.

[0053] Each of the support members 300 has an internal space 301 that connects to the through-hole 170. Each of the multiple support members 300 has an internal space 301 that connects to the through-hole 170 in the side walls 110 and 120 of the housing 100. In other words, when the support member 300 is inserted into the through-hole 170, the internal space 301 of the support member 300 becomes continuously connected to the through-hole 170. Specifically, the first support member 310 has a first internal space 311 that is continuously connected to the through-holes 171 and 174. The second support member 320 has a second internal space 321 that is continuously connected to the through-holes 172 and 175. The third support member 330 has a third internal space 331 that is continuously connected to the through-holes 173 and 176.

[0054] In this embodiment, the internal space 301 is a rectangular space viewed from the X-axis direction that penetrates the support member 300 in the X-axis direction. The support member 300 is a hollow member in which the internal space 301 is formed, and is a cylindrical member that is rectangular in shape and extends in the X-axis direction when viewed from the X-axis direction. Specifically, the first internal space 311 is a rectangular space viewed from the X-axis direction that penetrates the first support member 310 in the X-axis direction, and the first support member 310 is a cylindrical member that is rectangular in shape and extends in the X-axis direction when viewed from the X-axis direction. The same applies to the second internal space 321 (second support member 320) and the third internal space 331 (third support member 330). The shape and size of the internal spaces 301 (first internal space 311, second internal space 321, and third internal space 331) are not limited. None of the internal spaces 301 penetrate the support member 300 in the X-axis direction, nor are they rectangular when viewed from the X-axis direction.

[0055] [2. Explanation of Effects] As described above, according to the embodiment of the present invention, the power storage panel 10 is arranged in contact with the side wall 110 of the housing 100 that houses the power storage device 200, by the support members 300 (first support member 310, second support member 320, and third support member 330) that support the power storage device 200. In this way, by the support members 300 being in contact with the side wall 110 of the housing 100, heat transferred from the power storage device 200 to the support members 300 is dissipated through the housing 100. Similarly, by the support members 300 being arranged in contact with the side wall 120 of the housing 100, heat transferred from the power storage device 200 to the support members 300 is dissipated through the housing 100. This improves the heat dissipation of the power storage device 200, and thus suppresses the temperature rise of the power storage device 200 with a simple configuration. By suppressing the temperature rise of the power storage device 200, the lifespan of the power storage device 200 can be improved.

[0056] The support members 300 (first support member 310, second support member 320, and third support member 330) can be inserted into through holes 170 (171, 172, and 173) formed in the side wall 110 of the housing 100, thereby allowing heat to be dissipated from the support members 300 through the through holes 170. Similarly, the support members 300 can be inserted into through holes 170 (174, 175, and 176) formed in the side wall 120 of the housing 100, thereby allowing heat to be dissipated from the support members 300 through the through holes 170. By inserting the support members 300 into the through holes 170 in the side wall 110 of the housing 100, the support members 300 can be easily attached to the housing 100. Similarly, by inserting the support members 300 into the through holes 170 in the side wall 120 of the housing 100, the support members 300 can be easily attached to the housing 100.

[0057] Internal spaces 301 (first internal space 311, second internal space 321, and third internal space 331) are formed in the support members 300 (first support member 310, second support member 320, and third support member 330) and connect to through holes 170 (171, 172, and 173) in the side walls 110 of the housing 100. These internal spaces 301 also connect to through holes 170 (174, 175, and 176) in the side walls 120 of the housing 100. This allows heat from the support members 300 to be dissipated through the internal spaces 301.

[0058] The support members 300 (first support member 310, second support member 320, and third support member 330) are rod-shaped members extending from the side wall 110 of the housing 100. The support members 300 are also rod-shaped members extending from the side wall 120 of the housing 100. As a result, the rod-shaped members allow for good airflow around them, enabling effective heat dissipation from the support members 300.

[0059] The support member 300 (third support member 330) supports the central part of the energy storage device 200, allowing heat to be dissipated from the central part of the energy storage device 200, thereby further improving the heat dissipation performance of the energy storage device 200.

[0060] Each of the multiple separate support members 300 (first support member 310, second support member 320, and third support member 330) that support the energy storage device 200 is positioned in contact with the side wall 110 of the housing 100. Each of the multiple separate support members 300 is also positioned in contact with the side wall 120 of the housing 100. This allows heat from the energy storage device 200 to be dissipated through the multiple support members 300, thereby further improving the heat dissipation performance of the energy storage device 200.

[0061] [3 Explanation of variations] Although an embodiment of the present invention, the power storage panel 10, has been described above, the present invention is not limited to this embodiment. The embodiments disclosed herein are illustrative in all respects, and the scope of the present invention includes all modifications in the sense and scope equivalent to the claims.

[0062] (Variation 1) In the above embodiment, the support member 300 is inserted into through holes 170 in the side walls 110 and 120 of the housing 100, but the support member 300 does not have to be inserted into the through holes 170. In this case, recesses are formed in the side walls 110 and 120 instead of through holes 170, and the support member 300 may be inserted into these recesses. Neither through holes 170 nor recesses are formed in the side walls 110 and 120, and the support member 300 does not have to be inserted into either the through holes 170 or the recesses. An internal space 301 connected to the through hole 170 is formed in the support member 300, but the internal space 301 does not have to be connected to the through hole 170, and the internal space 301 is not formed in the support member 300. One example of these will be described below. Figure 7 is a cross-sectional view showing the internal configuration of the housing 100a of the power storage panel 11 according to Modification 1 of this embodiment. Figure 7 is a diagram corresponding to Figure 5.

[0063] As shown in Figure 7, the power storage panel 11 in this modified example is equipped with a housing 100a and support members 300a (first support member 310a, second support member 320a, and third support member 330a) instead of the housing 100 and support members 300 that are provided in the power storage panel 10 in the above embodiment. Unlike the housing 100 in the above embodiment, the housing 100a in this modified example does not have through holes 170 formed in the side walls 110 and 120. Unlike the support member 300 in the above embodiment, the support member 300a in this modified example does not have an internal space 301. That is, the first support member 310a does not have a first internal space 311, the second support member 320a does not have a second internal space 321, and the third support member 330a does not have a third internal space 331.

[0064] The support members 300a are positioned in contact with the side walls 110 and 120 of the housing 100a. That is, each of the multiple support members 300a (first support member 310a, second support member 320a, and third support member 330a) is positioned in contact with the inner surfaces of the side walls 110 and 120 of the housing 100a. The support members 300a are rod-shaped members extending from the side wall 110 of the housing 100a. In other words, the support members 300a are rod-shaped members extending from the side wall 120 of the housing 100a. The other configurations of this modified example are the same as those of the above embodiment, so their description is omitted.

[0065] In this modified example, the same effects as in the above embodiment can be achieved. In particular, in this modified example, since through holes 170 are not formed in the side walls 110 and 120 of the housing 100a, the structure of the housing 100a is simplified. Since an internal space 301 is not formed in the support member 300a, the structure of the support member 300a is also simplified. This makes it easier to manufacture the power storage panel 11. In this modified example as well, when the support member 300a contacts the side walls 110 and 120 of the housing 100a, the heat transferred from the power storage device 200 to the support member 300a is dissipated through the housing 100a. This improves the heat dissipation of the power storage device 200, so that the temperature rise of the power storage device 200 can be suppressed with a simple configuration.

[0066] (Modification 2) In the above embodiment, the support members 300 (first support member 310 and second support member 320) support the first protrusion 212 and the second protrusion 213 of the outer casing 210 of the energy storage device 200, but this is not limited to this. The support members 300 (first support member 310 and second support member 320) may also support parts other than the first protrusion 212 and the second protrusion 213, such as the outer casing body 211 of the energy storage device 200. In this case, the energy storage device 200 does not need to have the first protrusion 212 and the second protrusion 213. One example of these will be described below. Figure 8 is a perspective view showing a configuration in which the support member 300 according to Modification 2 of this embodiment supports the energy storage device 200a. Figure 8 corresponds to Figure 4.

[0067] As shown in Figure 8, the energy storage device 200a in this modified example is equipped with an outer casing 210a instead of the outer casing 210 of the energy storage device 200 in the above embodiment. Unlike the outer casing 210 in the above embodiment, the outer casing 210a in this modified example is equipped with an outer casing body 211, without the first protrusion 212 and the second protrusion 213.

[0068] In this configuration, the multiple support members 300 support both ends and the central part of the energy storage device 200a in the Y-axis direction. Specifically, the first support member 310 supports the Y-axis negative end of the outer casing body 211 of the outer casing 210a of the energy storage device 200a from below. The second support member 320 supports the Y-axis positive end of the outer casing body 211 of the outer casing 210a of the energy storage device 200a from below. The third support member 330 supports the Y-axis central part of the outer casing body 211 of the outer casing 210a of the energy storage device 200a from below. In this modified example, the first support member 310, the second support member 320, and the third support member 330 are arranged at the same position (same height) in the Z-axis direction. The other configurations of this modified example are the same as in the above embodiment, so their description is omitted.

[0069] In this modified example, the same effects as in the above embodiment can be achieved. In particular, in this modified example, the outer casing 210a of the energy storage device 200a does not have the first protrusion 212 and the second protrusion 213, so the configuration of the energy storage device 200a is simplified.

[0070] (Other variations) In the above embodiment, the support member 300 is a rod-shaped member, but the support member 300 may also be a wide plate-shaped member such as a shelf board, and the shape of the support member 300 is not limited. The form in which the support member 300 supports the energy storage device 200 is also not limited, and the support member 300 may support the energy storage device 200 by suspending it or the like.

[0071] In the above embodiment, each of the multiple support members 300 is positioned in contact with the side walls 110 and 120 of the housing 100, but this is not limited to this configuration. Any of the support members 300 may not be in contact with one or both of the side walls 110 and 120. Any of the support members 300 may be in contact with the side wall 130 or 140 of the housing 100. Not all of the multiple support members 300 are in contact with the same side wall of the housing 100. In other words, some of the support members 300 may be in contact with the side wall 110 without being in contact with the side wall 120, and other some of the support members 300 may be in contact with the side wall 120 without being in contact with the side wall 110.

[0072] In the above embodiment, the internal spaces 301 of all support members 300 are connected to the through holes 170 in the side walls 110 and 120 of the housing 100, but this is not limited to this. The internal spaces 301 of any of the support members 300 do not need to be connected to one or both of the through holes 170 in the side walls 110 and 120.

[0073] In the above embodiment, the first support member 310, the second support member 320, and the third support member 330 are separate components, but at least two of the first support member 310, the second support member 320, and the third support member 330 may be integrated into a single unit.

[0074] In the above embodiment, the power storage panel 10 does not necessarily have to be equipped with any of the first support member 310, the second support member 320, and the third support member 330.

[0075] In the above embodiment, the power storage panel 10 is provided with a plurality of first support members 310, but the power storage panel 10 may be provided with only one first support member 310. The same applies to the second support member 320 and the third support member 330.

[0076] In the above embodiment, the power storage panel 10 does not have shelves inside the housing 100, but the power storage panel 10 may also have shelves in addition to the support members 300.

[0077] In the above embodiment, the side wall 130 is assumed to be the door of the housing 100, but the side wall 140 may be the door of the housing 100, or the side wall 110 or side wall 120 may be the door of the housing 100. In this case as well, the energy storage device 200 can be housed inside the housing 100 by opening and closing the side wall 140, the side wall 110, or the side wall 120.

[0078] In the above embodiment, the housing 100 of the power storage panel 10 is assumed to have a sealed structure, but it does not have to have a sealed structure.

[0079] In the above embodiment, the housing 100 does not necessarily have to have any of the side walls 110-140, the bottom wall 150, or the top wall 160.

[0080] In the above embodiment, it is assumed that all energy storage devices 200 provided in the energy storage panel 10 have the above configuration, but it is not necessary for any of the energy storage devices 200 to have the above configuration. In the above embodiment, it is assumed that all energy storage elements 220 provided in the energy storage device 200 have the above configuration, but it is not necessary for any of the energy storage elements 220 to have the above configuration.

[0081] Embodiments constructed by arbitrarily combining the above embodiments and modifications are also included within the scope of the present invention. [Industrial applicability]

[0082] This invention can be applied to a power storage panel or the like equipped with a power storage device. [Explanation of Symbols]

[0083] 10, 11 Storage panel 100, 100a enclosure 110, 120, 130, 140 side wall 150 Bottom wall 160 Upper wall 170, 171, 172, 173, 174, 175, 176 Through holes 200, 200a power storage device 210, 210a Outer casing 211 Main body of the exterior 212 First protrusion 213 Second protrusion 220 Energy Storage Elements 221 Container 221a Container body 221b Container lid 221c Gas discharge valve 222 terminals 300, 300a Support members 301 Interior space 310, 310a First support member 311 First interior space 320, 320a Second support member 321 Second internal space 330, 330a Third support member 331 Third internal space

Claims

1. A power storage device equipped with a power storage element, A housing for the aforementioned energy storage device, The device comprises a support member that supports the aforementioned energy storage device, The support member is positioned in contact with the side wall of the housing. Battery storage panel.

2. A through hole is formed in the aforementioned side wall. The support member is inserted into the through hole. The power storage panel according to claim 1.

3. The support member has an internal space that connects to the through hole. The power storage panel according to claim 2.

4. The support member is a rod-shaped member extending from the side wall. A power storage panel according to any one of claims 1 to 3.

5. The support member supports the central part of the energy storage device. A power storage panel according to any one of claims 1 to 3.

6. The power storage panel comprises a plurality of separate support members that support the power storage device, Each of the plurality of support members is positioned in contact with the side wall of the housing. A power storage panel according to any one of claims 1 to 3.

Images