Power storage device

Abstract

To provide a power storage device that can suppress the vertical load that the power storage device receives due to the vertical expansion of a laminate.SOLUTION: A power storage device 3 is mounted on a vehicle 1. The vehicle 1 includes a support member 7, and the power storage device 3 includes a stack 9 formed by stacking power storage modules 12A in the vertical direction H, and a storage case 11 that stores the stack 9. The storage case 11 includes a plate-like member 19 that is formed to cover an upper surface 13 of the stack 9 and located below the support member 7 and on the upper surface of the storage case 11. The stack 9 is bonded to the plate-like member 19 in an area 40B of the plate-like member 19 excluding an area 40A of the plate-like member 19 that corresponds to the support member 7 in the vertical direction H.SELECTED DRAWING: Figure 2

Description

[Technical Field]

[0001] The present disclosure relates to an electricity storage device. [Background technology]

[0002] For example, Japanese Patent Application Laid-Open Publication No. 2021-123227 discloses an electric storage device mounted under a vehicle. The electric storage device includes a housing case and a laminated body housed in the housing case. The laminated body and the housing case are bonded in the vertical direction. [Prior art documents] [Patent documents]

[0003] [Patent Document 1] Japanese Patent Publication No. 2021-123227 Summary of the Invention [Problem to be solved by the invention]

[0004] The housing case for the electricity storage device described in Patent Document 1 is constrained from above and below by the vehicle body structure. Therefore, when a stack formed from vertically stacked electricity storage modules expands in the vertical direction, the electricity storage device is subjected to a vertical load from the vehicle body structure.

[0005] The present disclosure has been made to solve the above-mentioned problems, and its purpose is to provide a storage device that can suppress the vertical load that the storage device receives by expanding the laminate in the vertical direction. [Means for solving the problem]

[0006] A first aspect of the present disclosure provides an energy storage device mounted on a vehicle, the vehicle including a support member, the energy storage device including a stack formed by stacking energy storage modules in the vertical direction, and a storage case that houses the stack, the storage case being formed to cover the top surface of the stack and including a plate-like member located below the support member and on the top surface of the storage case, and the stack is bonded to the plate-like member in an area excluding an area of ​​the plate-like member that corresponds to the support member in the vertical direction.

[0007] A vehicle equipped with an electric storage device according to a first aspect of the present disclosure has a passenger compartment space formed inside the vehicle, where passengers sit, and the passenger compartment space is separated from an exterior space by a plate-shaped member.

[0008] A vehicle equipped with the power storage device according to the first aspect of the present disclosure further includes a floor member located below the support member, and the storage case further includes an upper cover and a lower case, and the upper cover includes a plate-shaped member.

[0009] A floor member of a vehicle on which the power storage device according to the first aspect of the present disclosure is mounted and the plate-like member are arranged in the vertical direction with a gap therebetween.

[0010] The support member, floor panel, and plate-shaped member of a vehicle on which the energy storage device according to the first aspect of the present disclosure is mounted are fixed in the vertical direction by connecting members, and the distance between the plate-shaped member and the laminate in the vertical direction is wider than the distance between the floor member and the plate-shaped member in the vertical direction. [Effects of the Invention]

[0011] According to the electricity storage device according to the present disclosure, the vertical load that the electricity storage device receives can be suppressed by the vertical expansion of the laminate. [Brief explanation of the drawings]

[0012] [Figure 1] 1 is a plan view showing a schematic configuration of an electricity storage device according to an embodiment of the present invention. [Figure 2] FIG. 2 is a cross-sectional view taken along line II-II of FIG. [Figure 3] FIG. 10 is a cross-sectional view of a vehicle body and an electricity storage device according to a modified example of the present embodiment. DETAILED DESCRIPTION OF THE INVENTION

[0013] Hereinafter, embodiments of the present disclosure will be described in detail with reference to the drawings. In the drawings, the same or corresponding parts are designated by the same reference numerals, and description thereof will not be repeated.

[0014] 1 is an exploded perspective view that schematically shows a vehicle equipped with a power storage device according to this embodiment. The up-down direction H shown in FIG. 1 indicates the up-down direction of the vehicle 1. The width direction W indicates the vehicle width direction of the vehicle 1. The front-rear direction D indicates the front-rear direction of the vehicle 1.

[0015] The vehicle 1 includes a vehicle body 2 and an electricity storage device 3. The vehicle 1 includes, for example, a PHEV (Plug-in Hybrid Electric Vehicle), a BEV (Battery Electric Vehicle), or an FCEV (Fuel Cell Electric Vehicle). In the vehicle 1, a vehicle interior space R1 is formed by the vehicle body 2. The vehicle interior space R1 is a space in the vehicle 1 where a passenger sits.

[0016] The vehicle body 2 includes an underbody 4 and a shear panel 5. The underbody 4 has a pair of side shells 6A, 6B, a seat cloth 7, and a floor panel 8. The seat cloth 7 is an example of a "support member" in the present disclosure. The floor panel 8 is an example of a "floor member" in the present disclosure.

[0017] The pair of side shells 6A, 6B are formed to extend in the front-rear direction D. The side shells 6A, 6B are arranged at an interval in the width direction W. The side shells 6A, 6B are respectively disposed at one end and the other end of the vehicle body 2 in the width direction W.

[0018] The seat cloth 7 has a seat cloth 7A and a seat cloth 7B. The seat cloths 7A and 7B are formed to extend in the width direction W. The seat cloths 7A and 7B are arranged in an array in the front-to-rear direction D. One end of each of the seat cloths 7A and 7B in the width direction W reaches the side shell 6A, and the other end reaches the side shell 6B. The seat cloth 7A is located forward of the seat cloth 7B in the front-to-rear direction D.

[0019] The floor panel 8 is a plate-shaped member disposed at the bottom of the vehicle body 2. One end and the other end of the outer peripheral edge of the floor panel 8, which are arranged in the width direction W, reach the side shell 6A and the side shell 6B, respectively. The floor panel 8 is provided at the bottom of the seat cloth 7. In other words, the floor panel 8 is located below the seat cloth 7. The floor panel 8 separates the vehicle interior space R1 from the space outside the vehicle.

[0020] The shared panel 5 is disposed at a position facing the underbody 4 in the up-down direction H, with the electricity storage device 3 sandwiched therebetween. The shared panel 5 is fixed to the underbody 4.

[0021] The power storage device 3 is, for example, a device for storing electric power for driving the vehicle 1. The power storage device 3 is mounted on the vehicle 1. More specifically, the power storage device 3 is fixed to the vehicle body 2 by being fastened to each of the pair of side shells 6A, 6B and the seat cross 7.

[0022] Fig. 2 is a cross-sectional view taken along line II-II of Fig. 1. The electricity storage device 3 has a laminated body 9 and a housing case 11. The electricity storage device 3 is disposed below a floor panel 8.

[0023] The laminate 9 is formed, for example, in the shape of a rectangular parallelepiped. The laminate 9 has an upper surface 13, a lower surface 14, and a peripheral surface 15. The upper surface 13 and the lower surface 14 are surfaces arranged in the up-down direction H. The upper surface 13 is a surface located closer to the underbody 4 than the lower surface 14. The peripheral surface 15 is a surface connecting the outer peripheral edge of the upper surface 13 and the outer peripheral edge of the lower surface 14.

[0024] The laminate 9 includes a power storage module 12A, a cooling device 12B, and an insulating sheet 10.

[0025] The power storage module 12A is, for example, a bipolar battery. When the power storage module 12A is viewed from a position spaced apart from the power storage module 12A in the vertical direction H, the power storage module 12A has a rectangular shape. The power storage modules 12A are stacked in the vertical direction H with the cooling device 12B sandwiched therebetween.

[0026] Cooling device 12B is electrically conductive, and therefore electrically connects power storage modules 12A adjacent to cooling device 12B in the up-down direction H.

[0027] The insulating sheets 10 are made of an insulating material and are provided in the up-down direction H at one end and the other end of the power storage modules 12A stacked in the up-down direction H.

[0028] The storage case 11 has an upper cover 16 and a lower case 17. The storage case 11 stores the laminate 9 therein.

[0029] The upper cover 16 is formed by a top plate 19, an upper flange 20, and a hanging wall 21. The top plate 19 is an example of the "plate-like member" of the present disclosure.

[0030] The top plate 19 is located on the upper surface of the case 11. The top plate 19 is formed to cover the upper surface 13 of the stacked body 9. The top plate 19 and the stacked body 9 are arranged with a gap G1 in the vertical direction H. The top plate 19 is a plate-shaped member. When viewed from above from a position away from the top plate 19 in the vertical direction H, the top plate 19 is formed into a rectangular shape. The top plate 19 and the floor panel 8 are arranged with a gap G2 in the vertical direction H. The top plate 19 is located below the floor panel 8. The gap G1 between the top plate 19 and the stacked body 9 in the vertical direction H is wider than the gap G2 between the top plate 19 and the floor panel 8 in the vertical direction H.

[0031] The upper surface 13 of the laminate 9 is adhered to a portion of the lower surface 19B of the top plate 19 with adhesive A1. Specifically, the adhesive A1 is applied to an area 40B of the lower surface 19B of the top plate 19, excluding an area 40A corresponding to the sheet cloths 7A and 7B in the up-down direction H. A space R2 is defined by the adhesive A1 applied to the area 40B, the top plate 19, and the laminate 9.

[0032] The seat cloth 7, floor panel 8 and top plate 19 are fixed in the up-down direction H by fastening members 41.

[0033] More specifically, the fastening member 41 is formed from an upper member 42, a shaft member 43, and a lower member 44. The upper member 42, the shaft member 43, and the lower member 44 are formed in a cylindrical shape extending in the up-down direction. The shaft member 43 connects the upper member 42 and the lower member 44. The upper member 42, the shaft member 43, and the lower member 44 are arranged coaxially in the up-down direction H. The seat cloth 7 and the floor panel 8 each have through holes 47, 48. The through holes 47, 48 are formed coaxially in the up-down direction H. The diameters of the through holes 47, 48 are smaller than the diameters of the upper member 42 and the lower member 44 and larger than the diameter of the shaft member 43. The shaft member 43 is inserted into the through holes 47, 48. The lower surface 42A of the upper member 42 is joined to the seat cloth 7 in a region where it contacts the inner circumferential surface 7C of the seat cloth 7 in the up-down direction H. The lower surface 44A of the lower member 44 is joined to the top plate 19 in a region where it contacts the upper surface 19A of the top plate 19 in the up-down direction H.

[0034] The upper flange 20 is formed to extend in the front-to-rear direction D. The top plate 19 and the upper flange 20 are arranged at an interval in the up-down direction H. The upper flange 20 has a first upper flange 20A and a second upper flange 20B. The first upper flange 20A and the second upper flange 20B are arranged at an interval in the front-to-rear direction D, with the laminate 9 sandwiched therebetween.

[0035] The hanging wall 21 connects the top plate 19 and the upper flange 20. More specifically, the hanging wall 21 has a first hanging wall 21A and a second hanging wall 21B. The first hanging wall 21A and the second hanging wall 21B are arranged in the front-to-rear direction D. The first hanging wall 21A connects one end of the top plate 19 arranged in the front-to-rear direction D to the end of the first upper flange 20A. The second hanging wall 21B connects the other end of the top plate 19 arranged in the front-to-rear direction D to the end of the second upper flange 20B.

[0036] The lower case 17 is formed to open upward and is composed of a bottom plate 22, a lower flange 23, and an upright wall 24.

[0037] The bottom plate 22 is located on the underside of the case of the storage case 11. The bottom plate 22 is a member formed in a plate shape. When viewed from above from a position spaced apart from the bottom plate 22 in the up-down direction H, the bottom plate 22 is formed in a shape that makes its outer shape the same as that of the top plate 19. The bottom plate 22 is disposed at a distance from the top plate 19 in the up-down direction H, with the stacked body 9 sandwiched therebetween.

[0038] The lower flange 23 is formed to extend in the front-rear direction D. The bottom plate 22 and the lower flange 23 are arranged at an interval in the up-down direction H. The lower flange 23 has a first lower flange 23A and a second lower flange 23B. The first lower flange 23A and the second lower flange 23B are arranged at an interval in the front-rear direction D, with the laminate 9 sandwiched therebetween.

[0039] The first lower flange 23A is fixed to the underbody 4 shown in Fig. 1 together with the first upper flange 20A. The second lower flange 23B is fixed to the underbody 4 shown in Fig. 1 together with the second upper flange 20B. In this way, the electricity storage device 3 is fixed to the vehicle body 2.

[0040] The upright wall 24 connects the bottom plate 22 and the lower flange 23. More specifically, the upright wall 24 has a first upright wall 24A and a second upright wall 24B. The first upright wall 24A and the second upright wall 24B are arranged in the front-to-rear direction D. The first upright wall 24A connects one end of the bottom plate 22 arranged in the front-to-rear direction D to the end of the first lower flange 23A. The second upright wall 24B connects the other end of the bottom plate 22 arranged in the front-to-rear direction D to the end of the second lower flange 23B.

[0041] The shared panel 5 is disposed below the lower case 17 of the electricity storage device 3 in the up-down direction H. The shared panel 5 is formed to open upward. A buffer space R3 is formed between the shared panel 5 and the lower case 17. The shared panel 5 has a main body 29 and a pair of connecting portions 30.

[0042] The pair of connecting portions 30 are arranged at an interval in the front-rear direction D. One ends of the pair of connecting portions 30 are connected to each other by a main body portion 29. The other ends of the pair of connecting portions 30 are joined to the underbody 4.

[0043] A first reinforcement 31 and a second reinforcement 32 are disposed in the buffer space R3.

[0044] The first reinforcement 31 is disposed in the buffer space R3 and fixed to the underside 17A of the lower case 17. A plurality of first reinforcements 31 are arranged at intervals in the front-rear direction D. The first reinforcement 31 has a pair of joints 33, a main body 34, and a connection portion 35. The joints 33 are arranged at intervals in the front-rear direction D. The main body 34 is disposed between and below the pair of joints 33. The connection portion 35 connects each end of the pair of joints 33 to each outer peripheral end of the main body 34 arranged in the front-rear direction D. The main body 34 and the connection portion 35 are formed to protrude downward from the joints 33. The first reinforcement 31 is fixed to the lower case 17 by fixing the joints 33 to the underside 17A of the lower case 17.

[0045] The second reinforcement 32 is disposed in the buffer space R3 and fixed to the upper surface 5A of the share panel 5. The multiple second reinforcements 32 are arranged at intervals in the front-to-rear direction D. The second reinforcement 32 has a pair of joints 36, a main body 37, and a connection portion 38. The joints 36 are arranged at intervals in the front-to-rear direction D. The main body 37 is disposed between and above the pair of joints 36. The connection portion 38 connects each end of the pair of joints 36 to each outer peripheral end of the main body 34 arranged in the front-to-rear direction D. The main body 37 and the connection portion 38 are formed to protrude upward relative to the joints 36. The second reinforcement 32 is fixed to the share panel 5 by fixing the joints 36 to the upper surface 5A of the share panel 5.

[0046] Each of the multiple second reinforcements 32 arranged in the buffer space R3 is arranged between the first reinforcements 31. As a result, in the buffer space R3, the first reinforcements 31 and the second reinforcements 32 are arranged alternately in the front-rear direction D.

[0047] In the energy storage device 3 according to the above embodiment, the laminated body 9 and the top plate 19 are arranged with a gap G1 in the vertical direction H. For example, a vehicle member 80 shown in FIG. 2 is fixed to the seat cloths 7A and 7B. The vehicle member 80 is, for example, a seat rail or a center console. Furthermore, a portion of the gap G1 is filled with an adhesive A1.

[0048] By adopting such a configuration, deformation of the top plate 19 due to expansion of the laminated body 9 in the vertical direction H can be suppressed compared to when there is no gap G1. Consequently, it is possible to suppress the load applied to the laminated body 9 from the top plate 19 in the vertical direction H due to expansion of the laminated body 9. Furthermore, deformation of peripheral parts of the laminated body 9, such as the seat cloths 7A and 7B and vehicle members 80, due to expansion of the laminated body 9 can be suppressed.

[0049] The laminate 9 in the above embodiment is adhered to the top plate 19 of the upper cover 16 by the adhesive A1. By adopting such a configuration, it is possible to suppress vibration of the laminate 9 inside the casing 11.

[0050] Furthermore, an impact that the electricity storage device 3 receives from the surroundings of the vehicle is transmitted to the stack body 9. The impact transmitted to the stack body 9 is transmitted to the upper cover 16 via the adhesive A1, thereby making it possible to suppress damage to the stack body 9.

[0051] In the above embodiment, the top plate 19 is fixed to the floor panel 8 and the seat cloth 7 by fastening members 41. Furthermore, the laminate 9 is adhered to the top plate 19 by adhesive A1.

[0052] By adopting such a configuration, an impact transmitted to the laminate 9 can be transmitted via the adhesive A1 to the upper cover 16, floor panel 8, and seat cloth 7. As a result, damage to the laminate 9 due to impacts from the surroundings can be suppressed.

[0053] In the above embodiment, the adhesive A1 is applied to an area 40B of the top plate 19, excluding an area 40A corresponding to the sheet cloth 7 in the vertical direction H. The laminate 9 is adhered to the top plate 19 by the adhesive A1, which is applied so as to fill the gap G1.

[0054] By adopting such a configuration, when the laminate 9 expands in the vertical direction H, the reaction force from the floor panel 8, the seat cloth 7, and the fastening member 41 that the laminate 9 receives can be suppressed.

[0055] More specifically, when the laminate 9 expands, the adhesive A1 applies a reaction force to the laminate 9. When the adhesive A1 is applied to the region 40A and the region 40B, in the region 40B, the adhesive A1 transmits the reaction force from the top plate 19 to the laminate 9. In the region 70A, the adhesive A1 transmits the reaction forces from the seat cloth 7, the floor panel 8, the top plate 19, and the fastening member 41 to the laminate 9.

[0056] By limiting the application area of ​​adhesive A1 to area 40B only, a space R2 is maintained between the top plate 19 and the laminate 9 below the seat cloth 7. This reduces the reaction force that the laminate 9 receives from the seat cloth 7, floor panel 8, and fastening member 41. It also reduces deformation of the seat cloth 7 due to expansion of the laminate 9.

[0057] The top plate 19 in the above embodiment is disposed below the floor panel 8 with a gap G2 in the up-down direction H between it and the floor panel 8.

[0058] By adopting this configuration, even if the laminate 9 expands in a manner that causes deformation of the top plate 19, the reaction force that the laminate 9 receives from the seat cloth 7 and floor panel 8 can be suppressed until the top plate 19 comes into contact with the floor panel 8.

[0059] Similarly, even if the laminate 9 expands in a manner that causes deformation of the top plate 19, no load is applied to the floor panel 8 through the top plate 19 until the top plate 19 comes into contact with the floor panel 8, thereby preventing deformation of the seat cloth 7 and floor panel 8.

[0060] In the vehicle 1 of the above embodiment, the seat cloth 7, floor panel 8, and top plate 19 are fixed in the vertical direction H by fastening members 41. Furthermore, a gap G1 between the top plate 19 and the laminated body 9 is formed to be wider than a gap G2 between the top plate 19 and the floor panel 8. The laminated body 9 and the top plate 19 are bonded with an adhesive A1 applied to the region 40B. A space R2 is formed in the gap G1 between the top plate 19 and the laminated body 9.

[0061] With this configuration, as the laminate 9 expands in the vertical direction H, the adhesive A1 applied to the region 40B deforms the top plate 19 upward. As a result, on the underside 19B of the top plate 19, the region 40B deforms to be closer to the top surface 13 of the laminate 9 than the region 40A. Here, because the gap G1 is wider than the gap G2, the top surface 19A of the top plate 19 reaches the floor panel 8 before the underside 19B of the region 40A reaches the top surface 13 of the laminate 9. This prevents the gap between the underside 19B of the region 40A and the top surface 13 of the laminate 9 from approaching each other after the top surface 19A of the top plate 19 reaches the floor panel 8. Consequently, it is possible to prevent the underside 19B of the top plate 19 in the region 40A from reaching the top surface 13 of the laminate 9, and to prevent a local load from being applied to the laminate 9.

[0062] In the above embodiment, adhesive A1 is applied to region 40B so as to fill the gap between upper surface 13 of laminate 9 and lower surface 19B of top plate 19, but the present disclosure is not limited to this. Instead of adhesive A1, for example, an elastic body may be disposed. The elastic body bonds laminate 9 and top plate 19. Specifically, the elastic body is formed to a thickness corresponding to gap G1, and an adhesive layer is formed on the surface of the elastic body that corresponds to upper surface 13 or lower surface 19B in the vertical direction H.

[0063] By adopting such a configuration, the amount of adhesive A1 used can be reduced compared to when the adhesive A1 is applied between the laminate 9 and the top plate 19.

[0064] <Modification> In the above embodiment, an example has been shown in which the laminate 9 is bonded to the top plate 19 that forms the upper cover 16, but the present disclosure is not limited to this. For example, the floor panel 8 may form part of the upper cover 16, and the laminate 9 may be bonded to the floor panel 8. Details will be provided below.

[0065] 3 is a cross-sectional view of a vehicle body and a power storage device according to a modification of the present embodiment. Unless otherwise specified below, the vehicle body 2A and the power storage device 3A according to the modification have the same configuration as the vehicle body 2 and the power storage device 3 according to the embodiment of the present disclosure.

[0066] The power storage device 3A includes a housing case 60 and a stacked body 9. The housing case 60 houses the stacked body 9. The housing case 60 has an upper cover 61 and a lower case 17.

[0067] The upper cover 61 is formed from a part of the floor panel 8, a fixing member 62, an upper flange 63, and a hanging wall 64. The floor panel 8 in the modified example is an example of the "plate-like member" of the present disclosure.

[0068] The floor panel 8 is formed to cover the upper surface 13 of the laminated body 9. The upper cover 61 is located on the upper surface of the storage case 60. The floor panel 8 and the laminated body 9 are arranged with a gap G3 in the vertical direction H. The laminated body 9 is disposed below the floor panel 8.

[0069] The laminate 9 is adhered to the floor panel 8. Specifically, the upper surface 13 of the laminate 9 is adhered to the lower surface 8A of the floor panel 8 by an adhesive A2. The adhesive A2 is applied to an area 70B of the lower surface 8A of the floor panel 8, excluding an area 70A corresponding to the sheet cloth 7 in the vertical direction H. Note that a space R4 is defined by the adhesive A2 applied to the area 70B, the top panel 19, and the laminate 9.

[0070] The fixing member 62 is formed to extend in the front-to-rear direction D. The fixing member 62 is provided on the underside 8A of the floor panel 8. The fixing member 62 is joined to the floor panel 8 in an area of ​​the floor panel 8 that corresponds to the fixing member 62 in the up-down direction H. The fixing member 62 has a first fixing member 62A and a second fixing member 62B. The first fixing member 62A and the second fixing member 62B are arranged at a distance from each other in the front-to-rear direction D, with the laminate 9 sandwiched between them.

[0071] The upper flange 63 is formed to extend in the front-to-rear direction D. The top plate 19 and the upper flange 63 are arranged at an interval in the up-down direction H. The upper flange 63 has a first upper flange 63A and a second upper flange 63B. The first upper flange 63A and the second upper flange 63B are arranged at an interval in the front-to-rear direction D, with the laminated body 9 sandwiched therebetween.

[0072] The hanging wall 64 connects the fixing member 62 and the upper flange 20. More specifically, the hanging wall 64 has a first hanging wall 64A and a second hanging wall 64B. The first hanging wall 64A and the second hanging wall 64B are arranged in the front-to-rear direction D. The first hanging wall 64A connects an end of the first fixing member 62A to an end of the first upper flange 63A. The second hanging wall 64B connects an end of the second fixing member 62B to an end of the second upper flange 63B.

[0073] The upper cover 61 in the above embodiment has as one of its components the floor panel 8. The laminated body 9 and the floor panel 8 are arranged in the up-down direction H with a gap G3 therebetween.

[0074] By adopting such a configuration, deformation of the floor panel 8 due to expansion of the laminated body 9 in the vertical direction H can be suppressed compared to when there is no gap G3. In turn, it is possible to suppress load from being applied to the laminated body 9 from the floor panel 8 in the vertical direction H due to expansion of the laminated body 9. Furthermore, deformation of peripheral parts of the laminated body 9, for example, vehicle components 80, due to expansion of the laminated body 9 can be suppressed.

[0075] In the above embodiment, the stack body 9 is adhered to the floor panel 8 with the adhesive A2. This configuration can prevent the stack body 9 from vibrating within the accommodating case 60. Impacts received by the electricity storage device 3A from around the vehicle are transmitted to the stack body 9. The impact transmitted to the stack body 9 is transmitted to the floor panel 8 via the adhesive A2, thereby preventing damage to the stack body 9.

[0076] In the above embodiment, the adhesive A2 is applied to an area 70B of the floor panel 8, excluding an area 70A corresponding to the sheet cloth 7 in the vertical direction H. The laminate 9 is adhered to the floor panel 8 by the adhesive A2, which is applied so as to fill the gap G3.

[0077] By adopting such a configuration, the reaction force that the laminate 9 receives from the adhesive A2 when it expands in the up-down direction H can be suppressed.

[0078] More specifically, when the laminate 9 expands, the adhesive A2 applies a reaction force to the laminate 9. When the adhesive A2 is applied to the region 70A and the region 70B, in the region 70B, the adhesive A2 transmits the reaction force transmitted from the floor panel 8 to the adhesive A2 to the laminate 9. In the region 70A, the adhesive A2 transmits the reaction force transmitted from the sheet cloth 7 and the floor panel 8 to the adhesive A2 to the laminate 9.

[0079] By limiting the application area of ​​adhesive A2 to area 70B only, a space R4 is maintained between the floor panel 8 and the laminate 9 below the sheet cloth 7. This makes it possible to suppress the reaction force transmitted from the sheet cloth 7 to the laminate 9 via the adhesive A2. In other words, when the laminate 9 expands in the vertical direction H, the reaction force that the laminate 9 receives from the adhesive A2 can be suppressed. In addition, deformation of the sheet cloth 7 due to the expansion of the laminate 9 can be suppressed.

[0080] The embodiments disclosed herein should be considered to be illustrative in all respects and not restrictive. The scope of the present disclosure is defined by the claims, not by the description of the above embodiments, and is intended to include all modifications within the meaning and scope of the claims. [Explanation of symbols]

[0081] 1 vehicle, 2 vehicle body, 2A vehicle body, 3 power storage device, 3A power storage device, 4 underbody, 5 share panel, 5A upper surface, 6A, 6B side shell, 7 seat cloth, 7A, 7B seat cloth, 7C inner peripheral surface, 8 floor panel, 8A lower surface, 9 laminated body, 10 insulating sheet, 11 storage case, 12A power storage module, 13 upper surface, 14 lower surface, 15 peripheral surface, 16 upper cover, 17 lower case, 17A lower surface, 19 top plate, 19A upper surface, 19B lower surface, 20 upper flange, 20A first upper flange, 20B second upper flange, 21 hanging wall, 21A first hanging wall, 21B second hanging wall, 22 bottom plate, 23 lower flange, 23A first lower flange, 23B Second lower flange, 24 Upright wall, 24A First upright wall, 24B Second upright wall, 29 Main body, 30 Connection portion, 31 First reinforcement, 32 Second reinforcement, 33 Joint portion, 34 Main body, 35 Connection portion, 36 Joint portion, 37 Main body, 38 Connection portion, 40A, 40B Area, 41 Fastening member, 42 Upper member, 42A Lower surface, 43 Shaft portion, 44 Lower member, 44A Lower surface, 47, 48 Through hole, 60 Storage case, 61 Upper cover, 62 Fixing member, 62A First fixing member, 62B Second fixing member, 63 Upper flange, 63A First upper flange, 63B Second upper flange, 64 Dropping wall, 64A First dropping wall, 64B Second dropping wall, 70A, 70B Area, 80 Seat rail, A1, A2 adhesive, G1, G2, G3 gap, R1 passenger compartment space, R2 space, R3 buffer space, R4 space.

Claims

1. A power storage device mounted on a vehicle, the vehicle includes a support member located above the power storage device, the power storage device includes a stack formed by stacking power storage modules in a vertical direction, and a housing case that houses the stack; the storage case includes a plate-like member that is formed to cover an upper surface of the stack and is located below the support member and on the upper surface of the storage case, The laminate is bonded to the plate-like member in an area of ​​the plate-like member excluding an area of ​​the plate-like member corresponding to the support member in the up-down direction.

2. A vehicle cabin space in which occupants board is formed inside the vehicle, The power storage device according to claim 1 , wherein the plate-shaped member separates the vehicle interior space from an exterior space.

3. The vehicle further includes a floor member; The floor member is located below the support member, The housing case further includes an upper cover and a lower case, The power storage device according to claim 1 , wherein the upper cover includes the plate-shaped member.

4. The power storage device according to claim 3 , wherein the floor member and the plate-like member are arranged in the vertical direction with a gap therebetween.

5. The support member, the floor member, and the plate-like member are fixed in the up-down direction by connecting members, The power storage device according to claim 4 , wherein a distance between the plate-shaped member and the stack in the vertical direction is wider than a distance between the floor member and the plate-shaped member in the vertical direction.

Images