Power storage device and vehicle including the same

Abstract

The utility model relates to an electrical storage device and a vehicle with the electrical storage device. The electrical storage device is arranged below a floor panel of the vehicle. This electricity storage device is provided with: at least one electricity storage cell; a housing case including an upper case for housing at least one storage cell; the binding material is arranged on the upper surface of the at least one power storage battery cell and is used for binding the at least one power storage battery cell to the upper shell; and at least one buffer member disposed between the upper case and the floor panel and disposed above the adhesive material.

Description

Technical Field

[0001] This disclosure relates to energy storage devices and vehicles equipped with energy storage devices. Background Technology

[0002] In the energy storage device (battery pack) disclosed in Japanese Patent Application Publication No. 2019-197622, ​​the battery stack, which includes multiple energy storage cells (cells), is constrained by a metal restraint band.

[0003] Furthermore, in some energy storage devices, the battery cells are secured by adhesive material rather than by restraint straps. In such devices, it is desirable to reduce the amount of adhesive material used while securing the battery cells. Utility Model Content

[0004] One of the purposes of this disclosure is to reduce the amount of adhesive material used while fixing the battery cell.

[0005] According to one aspect of this disclosure, an energy storage device is disposed below the floor panel of a vehicle. The energy storage device includes: at least one energy storage cell; a housing housing the at least one energy storage cell and including an upper housing; an adhesive material disposed on top of the at least one energy storage cell to adhere the at least one energy storage cell to the upper housing; and at least one cushioning member disposed between the upper housing and the floor panel and disposed above the adhesive material.

[0006] Preferably, at least one battery cell is used instead of multiple battery cells. Each of the multiple battery cells is configured to extend in the longitudinal direction of the vehicle. The multiple battery cells are arranged along the width direction of the vehicle. At least one buffer component includes multiple buffer components. The multiple buffer components are arranged at intervals in the longitudinal direction of the vehicle. Each of the multiple buffer components is formed to extend in the width direction of the vehicle.

[0007] Preferably, there are at least one battery cell or multiple battery cells. Each of the multiple battery cells is configured to extend in the width direction of the vehicle. The multiple battery cells are arranged along the front-rear direction of the vehicle. At least one buffer component includes multiple buffer components. The multiple buffer components are arranged at intervals in the front-rear direction of the vehicle. Each of the multiple buffer components is formed to extend in the width direction of the vehicle.

[0008] According to another aspect of this disclosure, a vehicle is equipped with the aforementioned energy storage device. A protrusion projecting downwards is formed on the floor panel. At least one of the buffer members is disposed below the protrusion.

[0009] According to this disclosure, it is possible to reduce the amount of adhesive material used while fixing the battery cell. Attached Figure Description

[0010] The features, advantages, and technical and industrial significance of exemplary embodiments of the present invention will now be described with reference to the accompanying drawings, in which the same reference numerals denote the same elements, wherein,

[0011] Figure 1 This is a schematic side view of a vehicle equipped with the energy storage device according to Embodiment 1.

[0012] Figure 2 It is a schematic exploded perspective view of the energy storage device 2 and the vehicle frame 3.

[0013] Figure 3 This is a schematic three-dimensional view of the energy storage device 2.

[0014] Figure 4 This is a diagram showing an example of a battery cell 10.

[0015] Figure 5 This is a schematic first cross-sectional view showing the floor panel 4 and the energy storage device 2.

[0016] Figure 6 This is a schematic second cross-sectional view showing the floor panel 4 and the energy storage device 2.

[0017] Figure 7 This is a perspective view schematically representing the energy storage device involved in Embodiment 2.

[0018] Figure 8 This is a schematic cross-sectional view showing the floor panel 4 and the energy storage device 2A. Detailed Implementation

[0019] The embodiments and variations according to this disclosure will now be described with reference to the accompanying drawings. In the following description, the same parts and components are denoted by the same symbols, and their names and functions are also the same. Therefore, detailed descriptions will not be repeated. Furthermore, the embodiments and variations described below can be selectively combined as appropriate.

[0020] [Implementation Method 1]

[0021] Reference Figures 1-6 The energy storage device and the vehicle equipped with the energy storage device according to Embodiment 1 will be described. Figure 1 This is a schematic side view of a vehicle equipped with the energy storage device according to Embodiment 1. (Refer to...) Figure 1 In embodiment 1, the energy storage device 2 is disposed below the floor panel of the vehicle 1. Examples of the vehicle 1 include hybrid vehicles, plug-in hybrid vehicles, fuel cell vehicles, and electric vehicles. The vehicle 1 includes the energy storage device 2 and the vehicle frame 3.

[0022] Figure 2This is a schematic exploded perspective view showing the energy storage device 2 and the vehicle frame 3. (Refer to...) Figure 2 The vehicle frame 3 includes a left roof longitudinal beam 30, a right roof longitudinal beam 31, a left frame 32, a right frame 33, a first left pillar 34, a second left pillar 35, a third left pillar 36, a first right pillar 37, a second right pillar 38, and a third right pillar 39.

[0023] The left roof longitudinal beam 30 and the right roof longitudinal beam 31 are positioned above the vehicle frame 3. The left roof longitudinal beam 30 and the right roof longitudinal beam 31 are located on vehicle 1 (refer to...). Figure 1 The longitudinal beams 30 and 31 of the vehicle 1 are arranged at intervals along the width direction D2. Furthermore, the left roof longitudinal beam 30 and the right roof longitudinal beam 31 are arranged to extend in the longitudinal direction D1 of the vehicle 1. Direction D3 indicates the height direction of the vehicle 1.

[0024] The left frame 32 and the right frame 33 are disposed at the bottom of the vehicle frame 3. The left frame 32 and the right frame 33 are disposed at intervals in the width direction D2 of the vehicle 1. In addition, the left frame 32 and the right frame 33 are configured to extend in the front-rear direction D1 of the vehicle 1.

[0025] The first left pillar 34, the second left pillar 35, and the third left pillar 36 are disposed on the left side of the vehicle frame 3. The first left pillar 34 is configured to connect the front end of the left frame 32 to the front end of the left roof longitudinal beam 30. The second left pillar 35 is configured to connect the central portion of the left frame 32 to the central portion of the left roof longitudinal beam 30. The third left pillar 36 is configured to connect the rear end of the left frame 32 to the rear portion of the left roof longitudinal beam 30. That is, the second left pillar 35 is disposed at a distance from the first left pillar 34 and rearward, and the third left pillar 36 is disposed at a distance from the second left pillar 35.

[0026] The first right pillar 37, the second right pillar 38, and the third right pillar 39 are disposed on the right side of the vehicle frame 3. The first right pillar 37 is configured to connect the front end of the right frame 33 to the front end of the right roof longitudinal beam 31. The second right pillar 38 is configured to connect the central part of the right frame 33 to the central part of the right roof longitudinal beam 31. The third right pillar 39 is configured to connect the rear end of the right frame 33 to the rear part of the right roof longitudinal beam 31. That is, the second right pillar 38 is disposed at a distance from the first right pillar 37 and rearward, and the third right pillar 39 is disposed at a distance from the second right pillar 38.

[0027] A floor panel 4 is provided between the left frame 32 and the right frame 33. The energy storage device 2 is located below the floor panel 4 and is fixed to the left frame 32 and the right frame 33.

[0028] Figure 3 This is a schematic perspective view of the energy storage device 2. (Refer to...) Figure 3The energy storage device 2 includes multiple energy storage cells 10 and a housing 20 for housing the multiple energy storage cells 10.

[0029] The battery cell 10 is a secondary battery, typically a lithium-ion secondary battery. A lithium-ion secondary battery is a battery that uses lithium as the charge carrier. Besides general lithium-ion secondary batteries with a liquid electrolyte, it can also include so-called all-solid-state batteries that use a solid electrolyte. Furthermore, the battery cell 10 is not limited to lithium-ion secondary batteries; it can also be composed of nickel-metal hydride secondary batteries or other types of secondary batteries.

[0030] Battery cell 10 is configured in vehicle 1 (refer to) Figure 1 The battery extends along the front-rear direction D1. In addition, multiple battery cells 10 are arranged along the width direction D2 of the vehicle 1.

[0031] The housing 20 includes an upper housing 21 and a lower housing 22. Figure 3 The image shows the energy storage device 2 with the upper housing 21 removed. The lower housing 22 includes a base plate 24, a peripheral wall 25, and multiple partition walls 60, 61, 62, 63, and 64. The multiple partition walls 60, 61, 62, 63, and 64 divide the space inside the housing 20 into multiple spaces.

[0032] The base plate 24 is flat. A peripheral wall 25 extends from the outer periphery of the base plate 24 toward the top of the vehicle 1, and is annular. The peripheral wall 25 includes a front wall 28A, a rear wall 28B, a left side wall 28C, and a right side wall 28D. The front wall 28A is located in front of the peripheral wall 25, and the rear wall 28B is located behind the peripheral wall 25. The left side wall 28C and the right side wall 28D are spaced apart in the width direction D2 of the vehicle 1. The left side wall 28C is located on the left side of the vehicle 1, and the right side wall 28D is located on the right side of the vehicle 1. Partition walls 60, 61, 62, 63, and 64 are provided on the base plate 24. Partition walls 60, 61, 62, and 63 extend in the longitudinal direction D1 of the vehicle 1, and partition wall 64 extends in the width direction D2 of the vehicle 1. Partition wall 64 is located at the center of the vehicle 1 in the longitudinal direction D1. Partition walls 60 and 63 are disposed at the center of the vehicle 1 in the width direction D2. Partition wall 60 is disposed on the front side of the vehicle 1, which is closer to the front than partition wall 64, and partition wall 63 is disposed on the rear side of the vehicle 1, which is closer to the rear than partition wall 64. Multiple battery cells 10 are housed in the spaces separated by the multiple partition walls 60, 61, 62, 63, and 64.

[0033] The lower housing 22 further includes a plurality of support portions 26 and a plurality of support portions 27. Support portions 26 are disposed on the outer side of the left side wall 28C of the peripheral wall 25, and support portions 27 are disposed on the outer side of the right side wall 28D of the peripheral wall 25. Support portions 26 and 27 are fixed to the vehicle frame 3 (see reference). Figure 2As an example, holes for bolt insertion are provided in the support portions 26 and 27. By inserting bolts into these holes, the multiple support portions 26 are fixed to the left frame 32 (see reference). Figure 2 Multiple support parts 27 are fixed to the right frame 33 (see reference). Figure 2 ).

[0034] The energy storage device 2 further includes multiple buffer components 50. Figure 3 In the example shown, the energy storage device 2 includes four buffer members 50. The buffer members 50 are disposed on the upper surface of the upper housing 21. More specifically, the buffer members 50 are spaced apart in the longitudinal direction D1 of the vehicle 1. Furthermore, each of the buffer members 50 is formed to extend in the width direction D2 of the vehicle 1. Viewed from above, the buffer members 50 and the partition walls 61 and 62 extend from partition wall 61 to partition wall 62 in the width direction D2. Additionally, each buffer member 50 may also extend from near the left side wall 28C to near the right side wall 28D.

[0035] Figure 4 This is a diagram showing an example of a battery cell 10. (Refer to...) Figure 4 The battery cell 10 includes a top portion 11, a bottom portion 12, a pair of short sides 13 and 14, and a pair of long sides 15 and 16. The pair of short sides 13 and 14 are spaced apart in the longitudinal direction D1 of the vehicle 1. The pair of long sides 15 and 16 are spaced apart in the width direction D2 of the vehicle 1. Each of the pair of long sides 15 and 16 is formed to extend in the longitudinal direction D1 of the vehicle 1.

[0036] The battery cell 10 further includes a positive terminal 17 and a negative terminal 18. The positive terminal 17 is disposed on one of a pair of short sides 13, 14, and the negative terminal 18 is disposed on the other side of the pair of short sides 13, 14. Figure 4 In the example shown, the positive terminal 17 is located on the short side 14, and the negative terminal 18 is located on the short side 13. Alternatively, the positive terminal 17 and the negative terminal 18 may both be located on one of the short sides 13 and 14.

[0037] The battery cell 10 further includes a cell exhaust valve 19 for discharging gas inside the battery cell 10. The cell exhaust valve 19 is configured to discharge gas inside the battery cell 10 to the outside of the battery cell 10 when the internal pressure of the battery cell 10 increases. The cell exhaust valve 19 is located on the side of the battery cell 10. Figure 4 In the example shown, the battery cell exhaust valve 19 is located on the short side 13 where the negative terminal 18 is located. Alternatively, the battery cell exhaust valve 19 may be located on the short side 14, the long side 15, or the long side 16.

[0038] Figure 5 This is a schematic first cross-sectional view showing the floor panel 4 and the energy storage device 2. Figure 5 The diagram shows the energy storage device 2 positioned below the floor panel 4 along the [path / line]. Figure 3 The cross-section of the V-V line shown.

[0039] Reference Figure 5 The energy storage device 2 is located below the floor panel 4. More specifically, the support 26 is fixed to the left frame 32 by bolts 29 being inserted into holes provided in the support 26. Figure 5 Although not shown in the diagram, similarly, it is bolted into the support portion 27 (see reference). Figure 3 The holes allow the support 27 to be fixed to the right frame 33 (see reference). Figure 2 ).

[0040] In the energy storage device 2, the short side 13 faces the vehicle 1 (see reference). Figure 1 The battery cells 10 arranged in a front-facing manner and the battery cells 10 arranged with their short sides 14 facing the front of the vehicle 1 are arranged alternately along the width direction D2 of the vehicle 1.

[0041] Figure 6 This is a schematic second cross-sectional view showing the floor panel 4 and the energy storage device 2. Figure 6 The diagram shows the energy storage device 2 positioned below the floor panel 4 along the [path / line]. Figure 3 The cross section of line VI-VI shown.

[0042] Reference Figure 6 A surface facing the vehicle 1 is formed on the floor panel 4 (see reference). Figure 1 Below the ) are several protruding parts 5. Figure 6 In the example shown, four protrusions 5 are formed on the floor panel 4. The protrusions 5 are spaced apart in the longitudinal direction D1 of the vehicle 1. Furthermore, each of the protrusions 5 is formed to extend in the width direction D2 of the vehicle 1. Additionally, in the width direction D2, the protrusion 5 is formed to be longer than the buffer member 50.

[0043] Reference Figure 5 and Figure 6 The energy storage device 2 includes an adhesive material 40 for bonding the energy storage cells 10 to the upper housing 21. The adhesive material 40 is made of resin. The adhesive material 40 is disposed on the upper surface 11 of the energy storage cells 10. More specifically, the adhesive material 40 is disposed along the upper surface 11 between the upper surface 11 of the energy storage cells 10 and the upper housing 21. A plurality of energy storage cells 10 are fixed to the upper housing 21 by the adhesive material 40.

[0044] Reference Figure 6Multiple buffer members 50 are spaced apart in the longitudinal direction D1 of the vehicle 1 between the upper housing 21 and the floor panel 4. More specifically, the multiple buffer members 50 are disposed above the adhesive material 40. In addition, the multiple buffer members 50 are respectively disposed below the multiple protrusions 5. That is, the buffer members 50 are provided below the protrusions 5, and the adhesive material 40 is provided below the buffer members 50.

[0045] Refer again Figure 5 and Figure 6 The energy storage device 2 further includes a cooler 70 for cooling the energy storage cell 10. The cooler 70 is disposed along the lower part 12 of the energy storage cell 10.

[0046] The energy storage device 2 further includes an insulating plate 80. The insulating plate 80 is disposed along the base plate 24 between the cooler 70 and the base plate 24.

[0047] Thus, in the energy storage device 2 according to Embodiment 1, an adhesive material 40 is provided on the top 11 of the energy storage cell 10, and a buffer member 50 is provided above the adhesive material 40 between the upper housing 21 and the floor panel 4. As a result, a load from the floor panel 4 is applied to the buffer member 50, so the adhesive material 40 located below the buffer member 50 is pressed against the energy storage cell 10 by the load from the buffer member 50. Therefore, even if the amount of adhesive material 40 used is reduced, it is possible to prevent the energy storage cell 10 from peeling off from the adhesive material 40. Therefore, according to the energy storage device 2 according to Embodiment 1, it is possible to reduce the amount of adhesive material 40 used while fixing the energy storage cell 10.

[0048] Furthermore, the floor panel 4 has multiple protrusions 5 projecting downwards toward the vehicle 1, and multiple cushioning members 50 are respectively disposed below the multiple protrusions 5. Thus, due to the presence of the protrusions 5, compared to the case without protrusions 5, the cushioning members 50 are pressed against the upper housing 21 by the protrusions 5, and the adhesive material 40 located below the cushioning members 50 is pressed more firmly against the battery cell 10. Therefore, even with reduced usage of adhesive material 40, it is possible to prevent the battery cell 10 from peeling off from the adhesive material 40.

[0049] Furthermore, the buffer member 50 is formed to extend in the arrangement direction of the plurality of battery cells 10 (the width direction D2 of the vehicle 1). Therefore, a load from the floor panel 4 can be applied to the plurality of battery cells 10. Thus, even if the amount of adhesive material 40 used is reduced, it is possible to suppress the battery cells 10 from the adhesive material 40.

[0050] [Implementation Method 2]

[0051] Reference Figure 7 and Figure 8The energy storage device involved in Embodiment 2 will be described. Figure 7 This is a perspective view schematically representing the energy storage device involved in Embodiment 2.

[0052] The energy storage device 2A according to Embodiment 2 and the energy storage device 2 according to Embodiment 1 (see reference) Figure 3 Similarly configured in vehicle 1 (refer to) Figure 1 Below the floor panel. The energy storage device 2A according to Embodiment 2 differs from the energy storage device 2 according to Embodiment 1 in the arrangement of the energy storage cell 10.

[0053] In the energy storage device 2A, the energy storage cells 10 are configured to extend in the width direction D2 of the vehicle 1, and a plurality of energy storage cells 10 are arranged along the front-rear direction D1 of the vehicle 1. That is, in the energy storage device 2A, a pair of short sides 13, 14 (refer to...) Figure 4 They are spaced apart along the width direction D2 of vehicle 1. Additionally, a pair of long sidewalls 15, 16 (see reference) Figure 4 They are arranged at intervals in the longitudinal direction D1 of the vehicle 1. In addition, each of the pair of long side panels 15, 16 is formed to extend in the width direction D2 of the vehicle 1.

[0054] The energy storage device 2A, like the energy storage device 2, has multiple buffer components 50. Figure 7 In the example shown, the energy storage device 2A includes four buffer members 50. The buffer members 50 are disposed on the upper surface of the upper housing 21. More specifically, the buffer members 50 are spaced apart in the longitudinal direction D1 of the vehicle 1. Furthermore, each of the buffer members 50 is formed to extend in the width direction D2 of the vehicle 1. Additionally, each buffer member 50 may be formed from near the left side wall 28C to near the right side wall 28D.

[0055] Figure 8 This is a schematic cross-sectional view showing the floor panel 4 and the energy storage device 2A. Figure 8 The diagram shows the energy storage device 2A positioned below the floor panel 4 along the [unclear text - possibly a typo]. Figure 7 The cross section of line VIII-VIII shown.

[0056] Reference Figure 8 The energy storage device 2A is located below the floor panel 4. In the energy storage device 2A, the short side 13 faces the vehicle 1 (see reference). Figure 1 The battery cells 10 arranged on the left side of the vehicle 1 and the battery cells 10 arranged with their short sides 14 facing the left side of the vehicle 1 are arranged alternately along the front-rear direction D1 of the vehicle 1.

[0057] Multiple protrusions 5 are formed on the floor panel 4, projecting downwards toward the vehicle 1. Figure 8 In the example shown, four protrusions 5 are formed on the floor panel 4. The protrusions 5 are spaced apart in the longitudinal direction D1 of the vehicle 1. Furthermore, each of the protrusions 5 is formed to extend in the width direction D2 of the vehicle 1. In addition, in the width direction D2, the protrusion 5 is formed to be longer than the buffer member 50.

[0058] The energy storage device 2A includes an adhesive material 40 for bonding the energy storage cells 10 to the upper housing 21. The adhesive material 40 is made of resin. The adhesive material 40 is disposed on the upper surface 11 of the energy storage cells 10. More specifically, the adhesive material 40 is disposed along the upper surface 11 between the upper surface 11 of the energy storage cells 10 and the upper housing 21. A plurality of energy storage cells 10 are fixed to the upper housing 21 by the adhesive material 40.

[0059] Multiple buffer members 50 are spaced apart in the longitudinal direction D1 of the vehicle 1 between the upper housing 21 and the floor panel 4. More specifically, the multiple buffer members 50 are disposed above the adhesive material 40. In addition, the multiple buffer members 50 are respectively disposed below the multiple protrusions 5. That is, the buffer members 50 are provided below the protrusions 5, and the adhesive material 40 is provided below the buffer members 50.

[0060] In addition, the energy storage device 2A further includes a cooler 70 for cooling the energy storage cell 10. The cooler 70 is disposed along the lower part 12 of the energy storage cell 10.

[0061] The energy storage device 2A further includes an insulating plate 80. The insulating plate 80 is disposed along the base plate 24 between the cooler 70 and the base plate 24.

[0062] Thus, in the energy storage device 2A according to Embodiment 2, an adhesive material 40 is provided on the top 11 of the energy storage cell 10, and a buffer member 50 is provided above the adhesive material 40 between the upper housing 21 and the floor panel 4. As a result, a load from the floor panel 4 is applied to the buffer member 50, so the adhesive material 40 located below the buffer member 50 is pressed against the energy storage cell 10 by the load from the buffer member 50. Therefore, even if the amount of adhesive material 40 used is reduced, it is possible to prevent the energy storage cell 10 from peeling off from the adhesive material 40. Therefore, according to the energy storage device 2A according to Embodiment 2, it is possible to reduce the amount of adhesive material 40 used while fixing the energy storage cell 10.

[0063] Furthermore, the floor panel 4 has multiple protrusions 5 extending downward toward the vehicle 1, and multiple cushioning members 50 are respectively disposed below the multiple protrusions 5. Thus, due to the presence of the protrusions 5, compared to the case where the protrusions 5 are not provided, the cushioning members 50 are pressed against the upper housing 21 by the protrusions 5, and the adhesive material 40 located below the cushioning members 50 is pressed more strongly against the battery cell 10. Therefore, even if the amount of adhesive material 40 used is reduced, it is possible to prevent the battery cell 10 from peeling off from the adhesive material 40.

[0064] Furthermore, the buffer member 50 is formed to extend along the long side direction (width direction D2 of the vehicle 1) of the battery cell 10. Therefore, a load from the floor panel 4 can be applied to the battery cell 10 located below the buffer member 50. Thus, even if the amount of adhesive material 40 used is reduced, it is possible to suppress the battery cell 10 from peeling off the adhesive material 40.

[0065] [Variation Example]

[0066] The energy storage devices 2 and 2A only need to have at least one energy storage cell 10. In addition, the energy storage devices 2 and 2A only need to have at least one buffer component 50.

[0067] In embodiments 1 and 2 described above, multiple protrusions 5 are formed on the floor panel 4, but it is also possible to form only one protrusion 5 on the floor panel 4. When only one protrusion 5 is formed on the floor panel 4, an adhesive material 40 is provided on the upper surface 11 of the battery cell 10, and at least one of the buffer members 50 is disposed below the protrusion 5. In addition, the remaining buffer members 50 are disposed above the adhesive material 40 between the upper housing 21 and the floor panel 4.

[0068] Alternatively, the floor panel 4 may not have a protrusion 5. In this case, an adhesive material 40 is provided on the upper 11 of the battery cell 10, and at least one buffer member 50 is provided above the adhesive material 40 between the upper housing 21 and the floor panel 4.

[0069] The embodiments disclosed herein are exemplary in all respects and should not be considered limiting. The scope of this disclosure is defined by the claims rather than the foregoing description and is intended to include all modifications within the meaning and scope equivalent to the claims.

Claims

1. An electric power storage device that is an electric power storage device disposed below a floor panel of a vehicle, wherein Possessing: at least one electricity storage cell; a housing that houses the at least one electricity storage cell and includes an upper housing; an adhesive material provided on the at least one electricity storage cell to adhere the at least one electricity storage cell to the upper housing; and at least one cushioning member disposed between the upper housing and the floor panel and above the adhesive material.

2. The electricity storage device according to claim 1, wherein the at least one electricity storage cell is a plurality of electricity storage cells, each of the plurality of electricity storage cells is disposed to extend in a front-rear direction of the vehicle, the plurality of electricity storage cells are arranged along a width direction of the vehicle, the at least one cushioning member is a plurality of cushioning members, the plurality of cushioning members are disposed at intervals in the front-rear direction of the vehicle, and each of the plurality of cushioning members is formed to extend in the width direction of the vehicle.

3. The electricity storage device according to claim 1, wherein the at least one electricity storage cell is a plurality of electricity storage cells, each of the plurality of electricity storage cells is disposed to extend in a width direction of the vehicle, the plurality of electricity storage cells are arranged along a front-rear direction of the vehicle, the at least one cushioning member is a plurality of cushioning members, the plurality of cushioning members are disposed at intervals in the front-rear direction of the vehicle, and each of the plurality of cushioning members is formed to extend in the width direction of the vehicle.

4. A vehicle provided with the electricity storage device according to any one of claims 1 to 3, wherein a protruding portion that protrudes downward is formed in the floor panel, and one of the at least one cushioning member is disposed below the protruding portion. ​

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