Electricity storage device and vehicle

Abstract

To provide an electricity storage device that, when gas is discharged from one electricity storage device of two electricity storage devices are adjacent to each other, can suppress heat generation of the other electricity storage device.SOLUTION: An electricity storage device 10 includes: multiple electricity storage device stacks; 101 and a housing case 120 accommodating the multiple electricity storage device stacks 101. The housing case 120 includes: a top plate section positioned above the multiple electricity storage device stacks 101 and having an uneven shape; and demarcation members 213A, 214A that demarcate regions where the electricity storage stacks 101 are respectively disposed. The top plate section includes a protruding portion 301 extending upwards and a recessed portion 302 extending downwards. The partition members 213A, 214A are arranged between adjacent electricity storage device stacks 101. Inside partition members 213A, 214A, a flow path for gas discharged from the electricity storage device stacks 101 is provided. The partition members 213A, 214A are in contact with the recessed portion 302.SELECTED DRAWING: Figure 3

Description

[Technical Field]

[0001] The present disclosure relates to a power storage device and a vehicle equipped with the power storage device. [Background technology]

[0002] As a conventional electricity storage device, International Publication No. 2020 / 134054 (Patent Document 1) discloses a structure in which partition members for partitioning areas in which multiple electricity storage stacks are arranged are made of hollow members, and the hollow portions of the hollow members are used as smoke exhaust paths. The hollow members are provided with multiple through holes for introducing gases exhausted from the electricity storage device. [Prior art documents] [Patent documents]

[0003] [Patent Document 1] International Publication No. 2020 / 134054 Summary of the Invention [Problem to be solved by the invention]

[0004] The temperature of gas discharged from the power storage device is quite high, and when the gas flows through the smoke exhaust path, the temperature of the partition member in which the smoke exhaust path is installed also rises. The partition member is disposed between two adjacent power storage devices. Therefore, if the temperature of the partition member rises without any measures, the heat may be transferred to the power storage device located next to the partition member, causing a chain reaction of heat generation among the multiple power storage devices.

[0005] The present disclosure has been made in consideration of the above-mentioned problems, and an object of the present disclosure is to provide an energy storage device and a vehicle that can suppress heat generation in one of two adjacent energy storage devices when gas is discharged from the other of the two adjacent energy storage devices. [Means for solving the problem]

[0006] The present disclosure provides an energy storage device comprising a plurality of energy storage stacks and a housing case for housing the plurality of energy storage stacks, the housing case including a top plate portion located above the plurality of energy storage stacks and having an uneven shape, and a partition member for partitioning an area in which each of the plurality of energy storage stacks is to be disposed. The top plate portion includes a convex portion protruding upward and a concave portion recessed downward. A flow path is provided inside the partition member through which gas discharged from the energy storage stacks flows. The partition member is in contact with the concave portion.

[0007] According to the above configuration, when gas is discharged from the power storage stack, the partition member having a flow path through which the gas flows abuts against the top plate of the storage case, thereby allowing the heat of the gas flowing through the flow path to be transferred to the top plate via the partition member. The uneven shape of the top plate improves heat dissipation from the top plate, allowing the heat to be effectively released to the outside of the storage case. As a result, when gas is discharged from one of two adjacent power storage devices, heat transfer to the other of the two adjacent power storage devices is suppressed, thereby suppressing heat generation in the other power storage device.

[0008] In the power storage device according to the present disclosure, the protrusions and the recesses may be provided to extend in a direction intersecting the up-down direction.

[0009] According to the above configuration, the projections and recesses extend in a predetermined direction, thereby increasing the surface area of ​​the top plate, thereby further improving heat dissipation from the top plate.

[0010] A vehicle according to the present disclosure includes the above-described power storage device and a vehicle body, wherein the protrusion is in contact with a part of the vehicle body.

[0011] According to the above configuration, heat transferred from the partition member to the top plate portion can be transferred to the vehicle body via the protrusion, and can also be dissipated from the vehicle body. [Effects of the Invention]

[0012] According to the present disclosure, it is possible to provide an energy storage device and a vehicle that can suppress heat generation from one of two adjacent energy storage devices when gas is discharged from the other of the two adjacent energy storage devices. [Brief explanation of the drawings]

[0013] [Figure 1] 1 is a schematic diagram showing a vehicle according to a first embodiment. [Figure 2] 1 is a schematic exploded perspective view of an electricity storage device according to a first embodiment. [Figure 3] 1 is a schematic cross-sectional view showing a state in which the electricity storage device according to the first embodiment is mounted. [Figure 4] FIG. 10 is a schematic exploded perspective view of an electricity storage device according to a second embodiment. [Figure 5] FIG. 10 is a schematic exploded perspective view of an electricity storage device according to a second embodiment. DETAILED DESCRIPTION OF THE INVENTION

[0014] Hereinafter, embodiments of the present disclosure will be described in detail with reference to the drawings. In the embodiments described below, the same or common parts are denoted by the same reference numerals in the drawings, and the description thereof will not be repeated.

[0015] (Embodiment 1) Fig. 1 is a schematic diagram showing a vehicle according to embodiment 1. Vehicle 1 according to embodiment 1 will be described with reference to Fig. 1.

[0016] The vehicle 1 is a hybrid vehicle that can run using at least one of the power of a motor and an engine, or an electric vehicle that runs using driving force obtained from electrical energy.

[0017] As shown in FIG. 1, a vehicle 1 includes a vehicle body (car body) 2, front wheels 3, rear wheels 4, an electricity storage device 10, a pair of front seats 71, a rear seat 72, and a floor carpet 80. The vehicle body 2 includes a passenger space S. The passenger space S is located above the floor carpet 80. A pair of front seats 71 and a rear seat 72 are arranged in the passenger space S. The pair of front seats 71 are arranged side by side in the width direction of the vehicle with a gap between them. The rear seat 72 is arranged behind the pair of front seats 71. The rear seat 72 extends in the width direction of the vehicle.

[0018] The electricity storage device 10 is disposed below the passenger space S. The electricity storage device 10 is fixed to the vehicle body 2. The electricity storage device 10 has an upper surface 10a. The upper surface 10a also functions as a floor member that defines the interior of the vehicle. A floor carpet 80 is located above the upper surface 10a. A heat insulating member may be disposed in the gap between the floor carpet 80 and the upper surface 10a. The floor carpet 80 may be disposed so as to cover a cross member 9 (see FIG. 2) described below from above.

[0019] 2 is a schematic exploded perspective view of the power storage device according to Embodiment 1. With reference to FIG. 2, the power storage device 10 according to Embodiment 1 will be described in detail.

[0020] 2, the power storage device 10 includes a power storage module 100 and a housing case 120. The power storage module 100 includes a plurality of power storage stacks 101, and is housed in a housing case 20.

[0021] The power storage module 100 includes a plurality of power storage stacks 101. The plurality of power storage stacks 101 are arranged in a matrix in the accommodation case 120. When the first direction (DR1) is the column direction and the second direction (DR2) is the row direction, the plurality of power storage stacks 101 are arranged, for example, in 3 rows and 2 columns. Note that the first direction is, for example, parallel to the front-to-rear direction of the vehicle 1 in a state in which the power storage device 10 is mounted on the vehicle body 2. The second direction is perpendicular to the first direction. In the above-mentioned mounted state, the second direction is parallel to the left-to-right direction of the vehicle 1. The plurality of power storage stacks 101 are electrically connected in series.

[0022] Each power storage stack 101 includes a plurality of unit cells 110. In each power storage stack 101, the plurality of unit cells 110 are arranged in the second direction. The plurality of unit cells 110 are electrically connected in series.

[0023] The unit cell 110 has a longitudinal shape with the first direction as the longitudinal direction, and a flat rectangular parallelepiped shape with a thickness in the second direction.

[0024] The unit cell 110 includes a housing 112, within which one or more electrode assemblies are housed.

[0025] When a single electrode body is housed in the housing 112, the electrode body has a shape extending in the longitudinal direction. The electrode body may be a laminated electrode body in which a negative electrode sheet, a separator, and a positive electrode sheet are laminated, or may be a wound electrode body in which a negative electrode sheet, a separator, and a positive electrode sheet are wound.

[0026] When multiple electrode bodies are housed in the housing 112, the multiple electrode bodies are arranged side by side in the longitudinal direction and connected in series. In this case, too, the electrode body may be a stacked electrode body or a wound electrode body.

[0027] The unit cell 110 is a secondary battery such as a nickel-metal hydride battery or a lithium-ion battery. The unit cell 110 may use a liquid electrolyte or a solid electrolyte. The unit cell 110 may also be a chargeable and dischargeable capacitor.

[0028] Housing 112 is formed of a metal material such as aluminum. Housing 112 includes first end face 110a and second end face 110b arranged in a first direction, and exhaust valve 111. Exhaust valve 111 is formed on first end face 110a. Exhaust valve 111 opens when the internal pressure of housing 112 exceeds a predetermined value, and exhausts gas inside housing 112 to the outside.

[0029] In each power storage stack 101, the multiple unit cells 110 are arranged in the second direction such that the exhaust valves 111 are alternately located on one side in the first direction and the other side in the first direction. That is, the multiple unit cells 110 are arranged such that the first end faces 110a and the second end faces 110b are alternately arranged in the second direction on each of the one side in the first direction and the other side in the first direction.

[0030] The storage case 120 includes an upper member 300 and a lower case 200. In the present embodiment, the upper member 300 is made of a plate-like member and functions as a top plate. The upper member 300 closes the opening of the lower case 200. The upper member 300 is located above the multiple power storage stacks 101 and has an uneven shape.

[0031] The upper member 300 has a plurality of protrusions 301 and a plurality of recesses 302. The plurality of protrusions 301 and the plurality of recesses 302 are provided so as to extend along a direction intersecting the up-down direction. Specifically, the plurality of protrusions 301 and the plurality of recesses 302 extend along a first direction.

[0032] The plurality of convex portions 301 and the plurality of concave portions 302 are arranged alternately in the second direction. The convex portions 301 protrude upward, and the concave portions 302 are recessed downward. The plurality of convex portions 301 and the plurality of concave portions 302 form the concave-convex shape of the upper member 300.

[0033] The upper member 300 is not limited to a plate-like shape, and may be a generally box-like shape that opens downward. In this case, the upper member 300 includes a top plate portion and a peripheral wall portion that extends downward from the outer periphery of the top plate portion, and the top plate portion has an uneven shape.

[0034] The lower case 200 has a generally box-like shape that opens upward. The lower case 200 includes a bottom plate 220, a pair of side walls 211A and 211B, a pair of end walls 211C and 211D, a plurality of partition members 213A, 213B, 214A, and 214B, and a partition member 215.

[0035] The bottom plate 220 is disposed facing the upper member 300 in the vertical direction. The pair of side walls 211A, 211B and the pair of end walls 211C, 211D stand upward from the periphery of the bottom plate 220 and form the peripheral wall portion of the lower case 200.

[0036] The lower case 200 includes a main body portion 35 and a fixed portion 36. The main body portion 35 is composed of the peripheral wall portion and a bottom plate 220. The fixed portion 36 is provided on both side surfaces of the main body portion 35 in the second direction. The fixed portion 36 extends along the first direction. The fixed portion 36 is a portion that is fixed to the vehicle main body 2, as will be described later.

[0037] The pair of side walls 211A, 211B are aligned in the second direction. The pair of side walls 211A, 211B extend along the first direction. The pair of end walls 211C, 211D are aligned in the first direction. The pair of end walls 211C, 211D extend along the second direction.

[0038] Partition member 215 is formed on the upper surface of bottom plate 220 so as to extend in the second direction. Partition member 215 divides the space inside casing 120 in the first direction. Partition member 215 may be formed hollow.

[0039] Each of the plurality of partition members 213A, 213B, 214A, 214B is disposed between two power storage stacks 101 adjacent to each other in the second direction.

[0040] The partition members 213A and 214A are arranged in a space on one side in the first direction within the accommodating case 120, which is partitioned by the partition member 215.

[0041] The partitioning members 213A and 214A are disposed on one side in the first direction between the pair of side wall portions 211A and 211B. The partitioning members 213A and 214A are disposed apart from the pair of side wall portions 211A and 211B and are disposed with a gap therebetween in the second direction.

[0042] The partitioning members 213A and 214A divide the space inside the accommodating case 120, which is located on one side in the first direction of the partition member 215, in the second direction. Specifically, the partitioning members 213A and 214A divide the space inside the accommodating case 120 on one side in the first direction into three areas in the second direction. In the space inside the accommodating case 120 located on one side in the first direction, the power storage stack 101 is arranged in each of the three areas partitioned by the partitioning members 213A and 214A.

[0043] The partition members 213B and 214B are arranged in the space separated by the partition member 215 in the accommodating case 120 on the other side in the first direction.

[0044] The partitioning members 213B and 214B are disposed between the pair of side wall portions 211A and 211B on the other side in the first direction. The partitioning members 213B and 214B are disposed apart from the pair of side wall portions 211A and 211B and are disposed with a gap therebetween in the second direction.

[0045] Partitioning members 213B and 214B divide in the second direction the space inside accommodating case 120 located on the other side in the first direction of partition member 215. Specifically, partitioning members 213B and 214B divide the space inside accommodating case 120 on the other side in the first direction into three areas in the second direction. In the space inside accommodating case 120 located on the other side in the first direction, power storage stacks 101 are arranged in each of the three areas partitioned by partitioning members 213A and 214A.

[0046] Flow paths through which gas can flow are provided inside the pair of side walls 211A, 211B, the pair of end walls 211C, 211D, and the plurality of partition members 213A, 213B, 214A, 214B. End wall 211C is provided with outlets 290A, 290B for discharging gas to the outside of casing 120, and end wall 211D is provided with outlets 291A, 291B for discharging gas to the outside of casing 120.

[0047] Side wall 211A is provided with side wall openings 255 and 265. Side wall opening 255 communicates with outlets 290A and 290B via flow paths 235 (see FIG. 3) provided in side wall 211A. Side wall opening 255 communicates with outlets 291A and 291B via flow paths (not shown) provided in side wall 211A.

[0048] The partitioning member 213A has openings 251 and 252. The opening 251 is provided in a main surface of the partitioning member 213A located on one side in the second direction. The opening 252 is provided in a main surface of the partitioning member 213A located on the other side in the second direction. The openings 251 and 252 communicate with the discharge ports 290A and 290B via flow paths 231 and 232 (see FIG. 3) provided inside the partitioning member 213A.

[0049] The partitioning member 214A has openings 253 and 254. The opening 253 is provided in a main surface of the partitioning member 214A located on one side in the second direction. The opening 254 is provided in a main surface of the partitioning member 214A located on the other side in the second direction. The openings 253 and 254 communicate with the discharge ports 290A and 290B via flow paths 233 and 234 (see FIG. 3) provided inside the partitioning member 214A.

[0050] The partitioning member 213B has openings 261 and 262. The opening 261 is provided in a main surface of the partitioning member 213B located on one side in the second direction. The opening 262 is provided in a main surface of the partitioning member 213B located on the other side in the second direction. The openings 261 and 262 communicate with the discharge ports 291A and 291B via flow paths (not shown) provided inside the partitioning member 213B.

[0051] The partitioning member 214B has openings 263 and 264. The opening 263 is provided in a main surface of the partitioning member 214B located on one side in the second direction. The opening 264 is provided in a main surface of the partitioning member 214B located on the other side in the second direction. The openings 263 and 264 communicate with the discharge ports 291A and 291B via flow paths (not shown) provided inside the partitioning member 214B.

[0052] Side wall 211B is provided with side wall openings 256 and 266. Side wall opening 256 communicates with outlets 290A and 290B via flow path 236 (see FIG. 3) provided in side wall 211B. Side wall opening 266 communicates with outlets 291A and 291B via a flow path (not shown) provided in side wall 211A.

[0053] The side wall openings 255, 256, 265, 266 and the openings 251 to 254, 261 to 264 are open toward any of the areas where the plurality of power storage stacks 101 are arranged. When gas is discharged from any of the plurality of power storage stacks 101, the gas is introduced into any of the flow paths from the side wall opening or any of the openings that open toward the area where the power storage stack 101 that discharges the gas is arranged, and the gas is discharged to the outside of the accommodation case 120 from the discharge ports 290A, 290B or the discharge ports 291A, 291B.

[0054] 3 is a schematic cross-sectional view showing how the power storage device according to embodiment 1 is mounted. With reference to FIG. 3, how the power storage device 10 is mounted will be described.

[0055] As shown in FIG. 3 , the vehicle body 2 includes a frame member 5. The frame member 5 includes a pair of side members 6 and a pair of side sills 7. The pair of side sills 7 are arranged on both ends of the vehicle 1 in the width direction. The pair of side members 6 are arranged inside the pair of side sills 7 with a distance between them. The pair of side members 6 and the pair of side sills 7 extend along the front-rear direction of the vehicle 1.

[0056] The pair of side members 6 are spaced apart in the width direction of the vehicle 1. A main body 35 of the electricity storage device 10 is disposed in the gap between the pair of side members 6. A gap is provided between the main body 35 and the pair of side members 6. This makes it possible to suppress input of an impact to the electricity storage device 10 even in the event of a side collision of the vehicle 1.

[0057] Fixed portions 36 are provided on both side surfaces of the main body portion 35 in the width direction of the vehicle 1. The fixed portions 36 are fixed to the pair of side members 6 by fastening members 8.

[0058] The framework member 5 also includes a cross member 9. The cross member 9 is provided above the electricity storage device 10 so as to straddle from one side sill 7 to the other side sill 7. The electricity storage device 10 is fastened and fixed to the cross member 9.

[0059] In the above description, an example has been given in which the framework member 5 includes a pair of side members 6 and a pair of side sills 7, but this is not limiting. The pair of side sills 7 may also function as the pair of side members 6. In this case, the pair of side members 6 can be omitted, and the above-described fixed portion 36 may be fixed to the pair of side sills 7.

[0060] In the storage case 120, the upper surfaces of the plurality of partition members 213A, 213B, 214A, and 214B are in contact with the recessed portion 302 of the upper member 300. The upper surfaces of the pair of side wall portions 211A and 211B are also in contact with the recessed portion 302.

[0061] The partition members 213A, 213B, 214A, 214B and the pair of side wall portions 211A, 211B are provided with flow paths through which gas discharged from the storage stack 101 can flow, as described above, and when gas flows through these flow paths, the temperatures of the partition members and side wall portions having these flow paths rise.

[0062] At this time, the plurality of partition members 213A, 213B, 214A, 214B and the pair of side wall portions 211A, 211B come into contact with the recess 302, thereby allowing the heat of the gas flowing through the flow path to be transferred to the upper member 300 via the partition members and the side wall portions. The uneven shape of the upper member 300 improves the heat dissipation from the upper member 300, allowing the heat to be effectively released outside the accommodating case 120. As a result, when gas is discharged from one of the two adjacent power storage stacks 101, the transfer of heat to the other of the two adjacent power storage stacks 101 can be suppressed, and heat generation in the other power storage stack can be suppressed.

[0063] Furthermore, the convex portion 301 of the upper member 300 is in contact with the cross member 9, which is part of the vehicle body 2. Therefore, heat can be transferred from the partition member and / or the side wall portion to the upper member 300 via the convex portion to the vehicle body 2, and can also be dissipated from the vehicle body 2 to the outside.

[0064] In addition, the projections 301 and recesses 302 extend in a direction intersecting the up-down direction, thereby increasing the surface area of ​​the upper member 300. This further improves the heat dissipation from the upper member 300.

[0065] When the convex portion 301 and the concave portion 302 extend in a direction parallel to the fore-and-aft direction of the vehicle, it becomes easier for outside air to flow through the concave portion 302 when the vehicle 1 is moving, thereby further improving the heat dissipation from the upper member 300.

[0066] In addition, since the upper member 300 has an uneven shape, the rigidity of the upper member 300 can be increased.

[0067] It should be noted that a flow path through which the gas flows may be provided in the partition member 215, and the upper surface of the partition member 215 may be in contact with the recess 302. Even in this case, heat from the gas flowing inside the partition member 215 can be transferred to the upper member 300.

[0068] (Embodiment 2) 4 is a schematic exploded perspective view of a power storage device according to Embodiment 2. With reference to FIG. 4, a power storage device 10A according to Embodiment 2 will be described.

[0069] 4, when compared with the power storage device 10 according to the first embodiment, the power storage device 10A according to the second embodiment differs in the configuration of the accommodating case 120 and the number of power storage stacks 101. The other configurations are substantially the same.

[0070] In power storage device 10A according to embodiment 2, two power storage stacks 101 are arranged at an interval in the first direction. Lower case 200 includes two partition members 213C and 213D. Partition members 213C and 213D have flow paths formed therein through which gas can flow.

[0071] The two partitioning members 213C, 213D are arranged with a gap between them in the first direction. The partitioning member 213C is located on one side of the partitioning member 213D in the first direction. The partitioning member 213D is arranged in approximately the center of the bottom plate 220 in the first direction. The partitioning members 213C, 213D extend along the second direction. The two partitioning members 213C, 213D are arranged on the bottom plate 220, and divide the space inside the storage case 20 into three in the second direction.

[0072] The partition member 213C is provided with a plurality of openings 251 A. The partition member 213D is provided with a plurality of openings 251 B and a plurality of openings 252 A. The end wall portion 211D is provided with a plurality of openings 252B.

[0073] The plurality of openings 251A, 251B are located between the partitioning member 213C and the partitioning member 213D, and open toward the area where the power storage stack 101 is disposed. The plurality of openings 252A, 252B are located between the partitioning member 213D and the end wall portion 211D, and open toward the area where the power storage stack 101 is disposed.

[0074] The plurality of openings 251A, 251B, 252A, and 252B communicate with the exhaust ports 290A and 290B via flow paths provided inside the pair of side wall portions 211A and 211B, the partition members 213C and 213D, and the pair of end wall portions 211C and 211D. Each of the openings 251A, 251B, 252A, and 252B is disposed opposite the exhaust valve 111 of the unit cell 110.

[0075] When gas is discharged from either of the two storage stacks 101, the gas is introduced into one of the flow paths through one of the openings 251A, 251B, 252A, 252B that open toward the area where the storage stack 101 discharging the gas is located, and the gas is discharged to the outside of the storage case 120 through the exhaust ports 290A, 290B or the exhaust ports 291A, 291B.

[0076] In the present embodiment as well, partition members 213C and 213D are in contact with recess 302 of upper member 300. Therefore, power storage device 10A according to embodiment 2 and a vehicle including power storage device 10A can achieve substantially the same effects as power storage device 10 and vehicle 1 according to embodiment 1.

[0077] In addition, since the openings 251A, 251B, 252A, and 252B are arranged opposite the exhaust valves 111 of the unit cells 110, the gas discharged from the exhaust valves 111 can be introduced directly into the flow paths.

[0078] (Embodiment 3) 5 is a schematic exploded perspective view of a power storage device according to embodiment 3. With reference to FIG. 5, a power storage device 10B according to embodiment 3 will be described.

[0079] 5, power storage device 10B according to embodiment 3 differs from power storage device 10A according to embodiment 2 in the configuration of accommodating case 120 and the number and arrangement of power storage stacks 101. The other configurations are substantially the same.

[0080] In the energy storage device 10B according to the third embodiment, the interior of the accommodating case 120 is divided into five regions by four partitioning members 213, and five energy storage stacks 101 are arranged at intervals in the second direction. The partitioning members 213 are arranged between adjacent energy storage stacks 101 in the first direction. The number of energy storage stacks 101 is not limited to five, and may be two or more. The number of partitioning members 213 can be set appropriately depending on the number of energy storage stacks 101.

[0081] In each power storage stack 101, the multiple power storage stacks 101 are arranged in the second direction so that the first end faces 110a of the multiple unit cells 110 included in that power storage stack 101 face the other side in the first direction. That is, in each power storage stack 101, all of the multiple exhaust valves 111 face the other side in the first direction. The multiple exhaust valves 111 are lined up in the second direction while being alternately shifted in the vertical direction.

[0082] Each partition member 213 has a plurality of openings 25h1, 25h2 that open toward a region located on one side of the partition member in the first direction. The end wall portion 211D also has a plurality of openings 25h1, 25h2 that open toward a region located on one side of the end wall portion 211D in the first direction. The openings 25h1, 25h2 are aligned in the second direction while being alternately shifted vertically. The openings 25h1, 25h2 face a plurality of exhaust valves 111 included in the power storage stack 101 located on one side of the first direction. This allows gas discharged from the exhaust valves 111 to be directly introduced into the partition member 213 or the end wall portion 211D through the openings 25h1, 25h2. The gas introduced into the partition member 213 and the end wall portion 211D passes through a flow path and is discharged from the exhaust ports 290A, 290B.

[0083] In the present embodiment as well, each of the plurality of partition members 213 contacts the recess 302 of the upper member 300. Therefore, the power storage device 10B and the vehicle according to the third embodiment can achieve substantially the same effects as the power storage device 10A and the vehicle according to the second embodiment.

[0084] The embodiments disclosed herein are illustrative in all respects and are not restrictive. The scope of the present invention is defined by the claims, and includes all modifications within the meaning and scope of the claims. [Explanation of symbols]

[0085] REFERENCE SIGNS LIST 1 vehicle, 2 vehicle body, 3 front wheel, 4 rear wheel, 5 frame member, 6 side member, 7 side sill, 8 fastening member, 9 cross member, 10, 10A, 10B power storage device, 10a upper surface, 25h1, 25h2 opening, 35 main body portion, 36 fixed portion, 71 front seat, 72 rear seat, 80 floor carpet, 100 power storage module, 101 power storage stack, 110 unit cell, 110a first end surface, 110b second end surface, 111 exhaust valve, 112 housing, 120 storage case, 200 lower case, 211A, 211B side wall portion, 211C, 211D end wall portion, 213, 213A, 213B, 213C, 213D, 214A, 214B partition member, 215 Partition member, 220 bottom plate, 231, 232, 233, 234, 235, 236 flow path, 251, 251A, 251B, 252, 252A, 252B, 253, 254 opening, 255, 256 side wall opening, 261, 262, 263, 264 opening, 265, 266 side wall opening, 290A, 290B, 291A, 291B discharge port, 300 upper member, 301 convex portion, 302 concave portion, S riding space.

Claims

1. a plurality of power storage stacks; a storage case that stores the plurality of power storage stacks, the storage case includes a top plate portion located above the plurality of power storage stacks and having an uneven shape, and a partition member that partitions areas in which the plurality of power storage stacks are to be disposed, The top plate portion includes a convex portion that protrudes upward and a concave portion that is recessed downward, a flow path through which gas discharged from the power storage stack flows is provided inside the partition member, The partition member is in contact with the recess.

2. The power storage device according to claim 1 , wherein the protrusions and the recesses are provided so as to extend in a direction intersecting the up-down direction.

3. The power storage device according to claim 1 or 2; Equipped with a vehicle body, The vehicle, wherein the protrusion is in contact with a part of the vehicle body.

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