Energy Storage System

Abstract

The present application discloses an energy storage system, comprising a first cabinet, a second cabinet, a first energy storage module, a second energy storage module, a conductive member and a sealing assembly. The first cabinet comprises a first chamber and a first wall, the second cabinet comprises a second chamber and a second wall, and the second wall and the first wall are spaced apart along a first direction. The first energy storage module is disposed in the first chamber, and the second energy storage module is disposed in the second chamber. The sealing assembly comprises a sealing member, the sealing member connects the first wall and the second wall and is capable of elastic deformation, the sealing member has a channel, the channel connects the first chamber and the second chamber, and the conductive member passes through the channel and connects the first energy storage module and the second energy storage module. The above-mentioned energy storage system is conducive to reducing the influence of foreign objects on the first energy storage module, the second energy storage module and the conductive member, and reducing the influence on the sealing effect of the sealing member when the first cabinet and the second cabinet are relatively displaced.

Description

Technical Field

[0001] The present application relates to the technical field of energy storage equipment, and in particular to an energy storage system. Background Art

[0002] When multiple energy storage cabinets are connected in parallel, they need to be electrically connected through connectors. The joints between the connectors and different energy storage cabinets usually need to be waterproofed with seals. However, when transporting or using multiple parallel energy storage cabinets, the relative movement between different energy storage cabinets will affect the sealing effect of the seals. Summary of the Invention

[0003] In view of the above situation, it is necessary to provide an energy storage system to reduce the impact of relative shaking of different cabinets on the sealing effect of the connection.

[0004] An embodiment of the present application provides an energy storage system, comprising a first cabinet, a second cabinet, a first energy storage module, a second energy storage module, a conductive member, and a sealing assembly. The first cabinet comprises a first chamber and a first wall, the first wall being provided with a first through hole, the first through hole being connected to the first chamber. The second cabinet comprises a second chamber and a second wall, the second wall being spaced apart from the first wall along a first direction, the second wall being provided with a second through hole, the second through hole being connected to the second chamber. The first energy storage module is arranged in the first chamber, and the second energy storage module is arranged in the second chamber. The sealing assembly comprises a sealing member, the sealing member connecting the first wall and the second wall and being capable of elastic deformation, the sealing member having a channel, the channel being connected to the first through hole and the second through hole. The conductive member passes through the first through hole, the channel, and the second through hole, and connects the first energy storage module and the second energy storage module.

[0005] In the above-mentioned energy storage system, the seal connects the first wall of the first cabinet and the second wall of the second cabinet, so that the first chamber and the second chamber are interconnected through the first through hole, the channel, and the second through hole, which helps to reduce the impact of foreign objects on the first energy storage module, the second energy storage module, and the conductive member. The seal can also be elastically deformed, which helps to reduce the impact on the sealing effect of the seal when the first cabinet and the second cabinet are relatively displaced.

[0006] In some embodiments of the present application, the first energy storage module includes a first connection end, the second energy storage module includes a second connection end, and the length of the conductive member is greater than the distance between the first connection end and the second connection end. When the first cabinet and the second cabinet undergo relative displacement, the length of the conductive member is greater than the distance between the first connection end and the second connection end, thereby reducing the impact of the relative displacement between the first cabinet and the second cabinet on the connection between the conductive member and the first energy storage module and the second energy storage module.

[0007] In some embodiments of the present application, the sealing member includes a first connecting portion, a second connecting portion, and a third connecting portion. The first connecting portion is connected to the first wall, with a passage extending through the first connecting portion. The second connecting portion is connected to the second wall, with a passage extending through the second connecting portion. The third connecting portion connects the first connecting portion and the second connecting portion, and the third connecting portion is elastically deformable. The elastic deformation of the third connecting portion helps reduce the impact of relative displacement between the first cabinet and the second cabinet on the sealing effect of the sealing member.

[0008] In some embodiments of the present application, the sealing assembly further includes a first structural member and a second structural member. The channel extends through the first structural member, and along a first direction, the first connecting portion is located between the first structural member and the first wall, and the first connecting portion is in a compressed and deformed state. The channel extends through the second structural member, and along the first direction, the second connecting portion is located between the second structural member and the second wall, and the second connecting portion is in a compressed and deformed state.

[0009] The above-mentioned first structural member connects the first connecting part and the first wall, and the second structural member connects the second connecting part and the second wall, so that the first connecting part and the second connecting part are both in a compressed and deformed state, which is beneficial to improving the sealing effect of the seal, reducing the risk of foreign objects entering the first chamber and channel through the gap between the seal and the first wall, and the gap between the seal and the first structural member, and reducing the risk of foreign objects entering the second chamber and channel through the gap between the seal and the second wall, and the gap between the seal and the second structural member.

[0010] In some embodiments of the present application, the sealing assembly further comprises a first stopper and a second stopper. At least a portion of the first stopper is located between the first structural member and the first wall, connecting the first structural member and the first wall, thereby facilitating reduction of the risk of excessive compression of the first connection portion, thereby shortening its service life. At least a portion of the second stopper is located between the second structural member and the second wall, connecting the second structural member and the second wall, thereby facilitating reduction of the risk of excessive compression of the second connection portion, thereby shortening its service life.

[0011] In some embodiments of the present application, a first stopper is fixedly connected to the first structural member and contacts the first wall. This helps improve the stability of the connection between the first stopper and the first structural member and reduces the risk of the first connection portion being over-compressed, thereby shortening its service life. A second stopper is fixedly connected to the second structural member and contacts the second wall. This helps improve the stability of the connection between the second stopper and the second structural member and reduces the risk of the second connection portion being over-compressed, thereby shortening its service life.

[0012] In some embodiments of the present application, the first connecting portion is provided with a third through hole, and a portion of the first limiting member passes through the third through hole; the second connecting portion is provided with a fourth through hole, and a portion of the second limiting member passes through the fourth through hole. The sealing assembly also includes a first connecting member, a first fastener, a second connecting member, and a second fastener. The first connecting member is fixedly connected to the first wall, and a portion of the first connecting member passes through the first limiting member and extends out of the side of the first structural member facing away from the first wall. The first fastener is connected to the portion of the first connecting member extending out of the first structural member and contacts and connects the first structural member, which is beneficial to limiting the displacement between the first structural member and the first wall away from each other, thereby reducing the risk of sealing failure of the first connecting portion. The second connecting member is fixedly connected to the second wall, and a portion of the second connecting member passes through the second limiting member and extends out of the side of the second structural member facing away from the second wall. The second fastener is connected to the portion of the second connecting member extending out of the second structural member and contacts and connects the second structural member, which is beneficial to limiting the displacement between the second structural member and the second wall away from each other, thereby reducing the risk of sealing failure of the second connecting portion.

[0013] In some embodiments of the present application, a first protrusion is provided on a side of the first connecting portion facing the first wall. The first protrusion contacts and connects to the first wall, and is in a compressed and deformed state along a first direction. A second protrusion is provided on a side of the second connecting portion facing the second wall. The second protrusion contacts and connects to the second wall, and is in a compressed and deformed state along the first direction.

[0014] The sealing assembly is connected to the first wall via the first protrusion provided on the first connection part, and is connected to the second wall via the second protrusion provided on the second connection part, which is beneficial to further improve the sealing effect of the seal.

[0015] In some embodiments of the present application, a third protrusion is provided on the side of the first connecting portion facing the first wall. The third protrusion is spaced apart from the first protrusion and contacts the first wall. Along the first direction, the third protrusion is in a compressed and deformed state, which further enhances the sealing effect between the first connecting portion and the first wall. A fourth protrusion is provided on the side of the second connecting portion facing the second wall. The fourth protrusion is spaced apart from the second protrusion and contacts the second wall. Along the first direction, the fourth protrusion is in a compressed and deformed state, which further enhances the sealing effect between the second connecting portion and the second wall. In the first direction, the projections of the first and third protrusions enclose a first area, and the projection of the third through hole is located within the first area, which reduces the risk of foreign objects entering the first chamber through the third through hole or the gap between the first connecting member and the first stopper. In the first direction, the projections of the second and fourth protrusions enclose a second area, and the projection of the fourth through hole is located within the second area, which reduces the risk of foreign objects entering the second chamber through the fourth through hole or the gap between the second connecting member and the second stopper.

[0016] In some embodiments of the present application, there are multiple first protrusions, which is conducive to further improving the sealing effect between the first connecting portion and the first wall. There are multiple second protrusions, which is conducive to further improving the sealing effect between the second connecting portion and the second wall.

[0017] In some embodiments of the present application, the first connecting portion and the first structural member are arranged in the first chamber, at least part of the third connecting portion is located between the first wall and the second wall, and the second connecting portion and the second structural member are arranged in the second chamber, which is beneficial to reducing the risk of foreign objects entering the first chamber through the gap between the seal and the first wall and the gap between the seal and the first structural member, and reducing the risk of foreign objects entering the second chamber through the gap between the seal and the second wall and the gap between the seal and the second structural member.

[0018] In some embodiments of the present application, along the first direction, the initial thickness of the first connecting portion is t1, the distance between the first structural member and the first wall is d1, and 30%≤(t1-d1) / t1≤60%; along the first direction, the initial thickness of the second connecting portion is t2, the distance between the second structural member and the second wall is d2, and 30%≤(t2-d2) / t2≤60%.

[0019] The compression ratio of the first connecting portion and the compression ratio of the second connecting portion are conducive to ensuring the sealing effect of the seal and reducing the risk of plastic deformation of the first connecting portion and the second connecting portion.

[0020] In some embodiments of the present application, 30%≤(t1-d1) / t1≤50%; 30%≤(t2-d2) / t2≤50%.

[0021] The compression ratio of the first connecting portion and the compression ratio of the second connecting portion described above are beneficial to further ensure the sealing effect of the seal and reduce the risk of plastic deformation of the first connecting portion and the second connecting portion.

[0022] To summarize, in the energy storage system of the present application, the seal connects the first wall of the first cabinet and the second wall of the second cabinet, so that the first chamber and the second chamber are interconnected through the first through hole, the channel and the second through hole, which is beneficial to reducing the impact of foreign objects on the first energy storage module, the second energy storage module and the conductive member, and the seal can undergo elastic deformation, which is beneficial to reducing the impact on the sealing effect of the seal when the first cabinet and the second cabinet undergo relative displacement. BRIEF DESCRIPTION OF THE DRAWINGS

[0023] Figure 1 This is a first view of a first cabinet and a second cabinet in parallel in one embodiment of the present application.

[0024] Figure 2 yes Figure 1A second view of the first cabinet and the second cabinet in parallel is shown.

[0025] Figure 3 yes Figure 2 Magnified view of portion III of the structure shown.

[0026] Figure 4 FIG. 1 is a first view of a seal according to an embodiment of the present application.

[0027] Figure 5 FIG. 2 is a second view of a seal according to an embodiment of the present application.

[0028] Figure 6 yes Figure 3 Magnified view of portion VI of the structure shown.

[0029] Figure 7 yes Figure 5 View of section VI I-VI I in the structure shown.

[0030] Figure 8 yes Figure 5 View of section VI I I-VI II in the structure shown.

[0031] Figure 9 yes Figure 3 Magnified view of portion IX of the structure shown.

[0032] Figure 10 yes Figure 5 View of section XX in the structure shown.

[0033] Figure 11 It is a schematic diagram of the partial structure of the sealing assembly connecting the first wall and the second wall in one embodiment of the present application.

[0034] Figure 12 yes Figure 11 Exploded view of the structure shown.

[0035] Figure 13 yes Figure 12 Cross-sectional view of the structure shown.

[0036] Figure 14 This is a first view of another embodiment of the present application showing a first cabinet connected in parallel with other cabinets.

[0037] Figure 15 This is a first view of another embodiment of the present application in which a second cabinet is connected in parallel with other cabinets.

[0038] Description of main component symbols

[0039] Energy Storage System 100

[0040] First cabinet 10

[0041] First Wall 11

[0042] First through hole 111

[0043] Third wall 12

[0044] Seventh through hole 121

[0045] First front wall 13

[0046] First rear wall 14

[0047] First top wall 15

[0048] First bottom wall 16

[0049] First chamber 17

[0050] Second cabinet 20

[0051] Second wall 21

[0052] Second through hole 211

[0053] Fourth Wall 22

[0054] Eighth through hole 221

[0055] Second front wall 23

[0056] Second rear wall 24

[0057] Second top wall 25

[0058] Second bottom wall 26

[0059] Second chamber 27

[0060] Seal assembly 30

[0061] Channel 31

[0062] Seal 32

[0063] First connection portion 321

[0064] First convex part 3211

[0065] The third through hole 3212

[0066] The third convex part 3213

[0067] First Area 3214

[0068] Second connection portion 322

[0069] Second convex portion 3221

[0070] Fourth through hole 3222

[0071] The fourth convex part 3223

[0072] Second area 3224

[0073] The third connection portion 323

[0074] Third Area 3231

[0075] First structural member 33

[0076] Ninth through hole 331

[0077] Second structural member 34

[0078] tenth through hole 341

[0079] First fastening assembly 35

[0080] First connecting member 351

[0081] First fastener 352

[0082] Second fastening assembly 36

[0083] Second connecting member 361

[0084] Second fastener 362

[0085] First limiting member 37

[0086] Fifth through hole 371

[0087] Second limiting member 38

[0088] Sixth through hole 381

[0089] Conductive member 40

[0090] First energy storage module 61

[0091] First connection end 611

[0092] The second energy storage module 62

[0093] Second connection end 621

[0094] First direction X

[0095] Second direction Y

[0096] The third direction Z

[0097] The following specific implementation methods will further illustrate the present application in conjunction with the above-mentioned drawings. DETAILED DESCRIPTION

[0098] The technical solutions in the embodiments of the present application will be described below in conjunction with the drawings in the embodiments of the present application. Obviously, the described embodiments are only part of the embodiments of the present application, rather than all the embodiments.

[0099] It should be noted that when an element is considered to be “connected” to another element, it may be directly connected to the other element or there may be a centrally disposed element. When an element is considered to be “disposed on” another element, it may be directly disposed on the other element or there may be a centrally disposed element.

[0100] Unless otherwise defined, all technical and scientific terms used herein have the same meaning as those commonly understood by those skilled in the art to which this application pertains. The terms used herein in the specification of this application are for the purpose of describing specific embodiments only and are not intended to limit this application.

[0101] An embodiment of the present application provides an energy storage system, comprising a first cabinet, a second cabinet, a first energy storage module, a second energy storage module, a conductive member, and a sealing assembly. The first cabinet comprises a first chamber and a first wall, the first wall being provided with a first through hole, the first through hole being connected to the first chamber. The second cabinet comprises a second chamber and a second wall, the second wall being spaced apart from the first wall along a first direction, the second wall being provided with a second through hole, the second through hole being connected to the second chamber. The first energy storage module is arranged in the first chamber, and the second energy storage module is arranged in the second chamber. The sealing assembly comprises a sealing member, the sealing member connecting the first wall and the second wall and being capable of elastic deformation, the sealing member having a channel, the channel being connected to the first through hole and the second through hole. The conductive member passes through the first through hole, the channel, and the second through hole, and connects the first energy storage module and the second energy storage module.

[0102] In the above-mentioned energy storage system, the seal connects the first wall of the first cabinet and the second wall of the second cabinet, so that the first chamber and the second chamber are interconnected through the first through hole, the channel, and the second through hole, which helps to reduce the impact of foreign objects on the first energy storage module, the second energy storage module, and the conductive member. The seal can also be elastically deformed, which helps to reduce the impact on the sealing effect of the seal when the first cabinet and the second cabinet are relatively displaced.

[0103] The embodiments of the present application are further described below with reference to the accompanying drawings.

[0104] like Figures 1 to 4As shown, an embodiment of the present application provides an energy storage system 100, comprising a first cabinet 10, a second cabinet 20, a sealing assembly 30, a first energy storage module 61, a second energy storage module 62, and a conductive member 40. The first cabinet 10 and the second cabinet 20 are arranged along a first direction X, and the sealing assembly 30 connects the first cabinet 10 and the second cabinet 20. The first cabinet 10 includes a first chamber 17, in which the first energy storage module 61 is disposed. The second cabinet 20 includes a second chamber 27, in which the second energy storage module 62 is disposed. The sealing assembly 30 has a through passage 31, which connects the first chamber 17 and the second chamber 27 and enables communication between the first chamber 17 and the second chamber 27. The conductive member 40 is partially located in the first chamber 17 and connected to the first energy storage module 61, while the conductive member 40 is partially located in the passage 31 and the conductive member 40 is partially located in the second chamber 27 and connected to the second energy storage module 62, thereby interconnecting the first energy storage module 61 and the second energy storage module 62.

[0105] The first cabinet 10 includes a first wall 11 having a first through-hole 111 therein, which communicates with the first chamber 17. The second cabinet 20 includes a second wall 21, which is spaced apart from and opposite to the first wall 11 along a first direction X. The second wall 21 has a second through-hole 211 therein, which communicates with the second chamber 27. The sealing assembly 30 includes a sealing member 32, which connects the first wall 11 and the second wall 21. The sealing member 32 is elastically deformable, and a channel 31 connects the first through-hole 111 and the second through-hole 211, thereby interconnecting the first chamber 17 and the second chamber 27.

[0106] In the energy storage system 100 of the present application, the first wall 11 of the first cabinet 10 and the second wall 21 of the second cabinet 20 are connected by the seal 32, so that the first chamber 17 of the first cabinet 10 is connected to the second chamber 27 of the second cabinet 20. The conductive member 40 can connect the first energy storage module 61 and the second energy storage module 62 by passing through the channel 31 on the seal 32, thereby reducing the impact of foreign objects on the objects in the first chamber 17, the objects in the second chamber 27 and the conductive member 40. The elastic deformation of the seal 32 is also conducive to reducing the impact on the sealing effect of the seal 32 when the first cabinet 10 and the second cabinet 20 are relatively displaced.

[0107] In one embodiment, the sealing member 32 is elastically deformable along the first direction X. In one embodiment, the sealing member 32 is elastically deformable along a direction perpendicular to the first direction X. It is understood that the direction perpendicular to the first direction X refers to any direction on a plane perpendicular to the first direction X.

[0108] In one embodiment, the first energy storage module 61 includes a plurality of first battery cells (not shown), which are stacked and disposed within the first chamber 17. In one embodiment, the plurality of first battery cells are connected in series. In one embodiment, the plurality of first battery cells are connected in parallel. In one embodiment, the plurality of first battery cells are connected in a combination of series and parallel connections.

[0109] In one embodiment, the energy storage system 100 further includes a first control module (not shown). The first control module is disposed in the first chamber 17 and connected to the plurality of first battery cells for controlling the charging and discharging of the first battery cells.

[0110] In one embodiment, the second energy storage module 62 includes a plurality of second battery cells (not shown), which are stacked and disposed within the second chamber 27. In one embodiment, the plurality of second battery cells are connected in series. In one embodiment, the plurality of second battery cells are connected in parallel. In one embodiment, the plurality of second battery cells are connected in a combination of series and parallel connections.

[0111] In one embodiment, the energy storage system 100 further includes a second control module (not shown). The second control module is disposed in the second chamber 27 and connected to the plurality of second battery cells for controlling the charging and discharging of the second battery cells.

[0112] In one embodiment, the conductive member 40 includes at least one of a wire harness, a copper busbar, and a conductive wire. In one embodiment, the conductive member 40 is a bent copper busbar or a curled wire harness.

[0113] In one embodiment, the material of the sealing member 32 includes but is not limited to any one of nitrile rubber, hydrogenated nitrile rubber, fluororubber, EPDM rubber, chloroprene rubber, butyl rubber, acrylic rubber, styrene-butadiene rubber, silicone rubber, isoprene rubber and butadiene rubber.

[0114] In one embodiment, the first cabinet 10 further includes a third wall 12, a first front wall 13, a first rear wall 14, a first top wall 15 and a first bottom wall 16, the third wall 12 and the first wall 11 are arranged opposite to each other along a first direction X, the first front wall 13 and the first rear wall 14 are arranged opposite to each other along a second direction Y perpendicular to the first direction X, the first top wall 15 and the first bottom wall 16 are arranged opposite to each other along a third direction Z perpendicular to the first direction X and the second direction Y, the first top wall 15 and the first bottom wall 16 are both connected to the first wall 11, the third wall 12, the first front wall 13 and the first rear wall 14, and the first wall 11, the third wall 12, the first front wall 13, the first rear wall 14, the first top wall 15 and the first bottom wall 16 are arranged to form a first chamber 17.

[0115] In one embodiment, the second cabinet 20 also includes a fourth wall 22, a second front wall 23, a second rear wall 24, a second top wall 25 and a second bottom wall 26. The fourth wall 22 and the second wall 21 are arranged opposite to each other along the first direction X, the second front wall 23 and the second rear wall 24 are arranged opposite to each other along the second direction Y, the second top wall 25 and the second bottom wall 26 are arranged opposite to each other along the third direction Z, and the second top wall 25 and the second bottom wall 26 are both connected to the second wall 21, the fourth wall 22, the second front wall 23 and the second rear wall 24. The second wall 21, the fourth wall 22, the second front wall 23, the second rear wall 24, the second top wall 25 and the second bottom wall 26 are arranged to form a second chamber 27.

[0116] In one embodiment, the first energy storage module 61 includes a first connection end 611, the first connection end 611 is connected to a plurality of first battery cells, and the conductive member 40 is connected to the first connection end 611 to achieve connection to the plurality of first battery cells. In one embodiment, the second energy storage module 62 includes a second connection end 621, the second connection end 621 is connected to a plurality of second battery cells, and the conductive member 40 is connected to the second connection end 621 to achieve connection to the plurality of second battery cells. The distance between the first connection end 611 and the second connection end 621 is d5, and the length of the conductive member 40 is L, satisfying L>d5. In one embodiment, the shape of the conductive member 40 is variable. In the present application, the length L of the conductive member 40 refers to the actual total length of the conductive member 40 after unfolding.

[0117] When the first cabinet 10 and the second cabinet 20 undergo relative displacement, the length of the conductive member 40 is greater than the distance between the first connection end 611 and the second connection end 621, which helps to reduce the impact of the relative displacement of the first cabinet 10 and the second cabinet 20 on the connection between the conductive member 40 and the first connection end 611 and the second connection end 621.

[0118] like Figure 3 、 Figure 4 and Figure 5 As shown, in one embodiment, the sealing member 32 includes a first connecting portion 321, a second connecting portion 322, and a third connecting portion 323. The third connecting portion 323 connects the first connecting portion 321 and the second connecting portion 322. The third connecting portion 323 is elastically deformable. The channel 31 passes through the first connecting portion 321, the second connecting portion 322, and the third connecting portion 323. The first connecting portion 321 is connected to the first wall 11, and the second connecting portion 322 is connected to the second wall 21.

[0119] When the first cabinet 10 and the second cabinet 20 are relatively displaced, the third connection portion 323 can adaptively adjust its shape through elastic deformation, maintain the connectivity of the channel 31, and reduce the impact of the relative displacement of the first cabinet 10 and the second cabinet 20 on the sealing effect of the seal 32.

[0120] In one embodiment, the third connecting portion 323 includes a third region 3231 located between the first wall 11 and the second wall 21. The third region 3231 is elastically deformable. In one embodiment, the third region 3231 is convex in a direction perpendicular to the first direction X, away from the channel 31. In one embodiment, the third region 3231 is concave in a direction perpendicular to the first direction X, toward the channel 31. In one embodiment, the third region 3231 has an accordion-like structure.

[0121] In one embodiment, the sealing assembly 30 further includes a first structural member 33 and a second structural member 34. The first structural member 33 connects the first connecting portion 321 and the first wall 11, and the second structural member 34 connects the second connecting portion 322 and the second wall 21. The channel 31 extends through the first and second structural members 33 and 34, and the conductive member 40 passes through the first and second structural members 33 and 34. Along the first direction X, the first connecting portion 321 is located between the first structural member 33 and the first wall 11 and is in a compressed and deformed state. The second connecting portion 322 is located between the second structural member 34 and the second wall 21 and is in a compressed and deformed state.

[0122] By providing the first structural member 33 and the second structural member 34, it is beneficial to ensure that the first connecting portion 321 is stably connected to the first wall 11 and the second connecting portion 322 is stably connected to the second wall 21. By having the first connecting portion 321 and the second connecting portion 322 in a compressed and deformed state, it is beneficial to improve the stability of the connection between the sealing member 32 and the first wall 11 and the second wall 21, and improve the sealing effect of the sealing member 32, thereby reducing the risk of foreign objects entering the first chamber 17 through the gap between the sealing member 32 and the first wall 11 and the gap between the sealing member 32 and the first structural member 33, and reducing the risk of foreign objects entering the second chamber 27 through the gap between the sealing member 32 and the second wall 21 and the gap between the sealing member 32 and the second structural member 34.

[0123] In one embodiment, the first structural member 33 is provided with a ninth through hole 331 extending therethrough, the ninth through hole 331 communicating with the channel 31 and the first through hole 111, and a portion of the conductive member 40 passes through the ninth through hole 331. In one embodiment, the second structural member 34 is provided with a tenth through hole 341 extending therethrough, the tenth through hole 341 communicating with the channel 31 and the second through hole 211, and a portion of the conductive member 40 passes through the tenth through hole 341.

[0124] In one embodiment, the material of the first structural member 33 includes any one of a POM (Polyoxymethylene) plate and a stainless steel plate. In one embodiment, the material of the second structural member 34 includes any one of a POM (Polyoxymethylene) plate and a stainless steel plate.

[0125] like Figure 3 and Figure 5 As shown, along the first direction X, the initial thickness of the first connecting portion 321 is t1, which is the uncompressed thickness. The distance between the first structural member 33 and the first wall 11 is d1, and the compressed thickness of the first connecting portion 321 is t1-d1. The thickness compression ratio of the first connecting portion 321 is (t1-d1) / t1. In one embodiment, 30% ≤ (t1-d1) / t1 ≤ 60%. This range of the thickness compression ratio of the first connecting portion 321 not only improves the sealing effect, but also helps reduce the risk of excessive compression of the first connecting portion 321 and resulting plastic deformation, thereby extending the service life of the seal 32.

[0126] In one embodiment, 30%≤(t 1-d1) / t1≤50%, which is beneficial to further ensure the sealing effect of the first connecting portion 321 and further reduce the risk of the first connecting portion 321 being over-compressed and thus plastically deformed, thereby extending the service life of the seal 32.

[0127] In one embodiment, the value of (t1-d1) / t1 is any one of 30%, 35%, 40%, 45%, 50%, 55% and 60%.

[0128] like Figure 3 and Figure 5 As shown, along the first direction X, the initial thickness of the second connecting portion 322 is t2, which is the uncompressed thickness. The distance between the second structural member 34 and the second wall 21 is d2, and the compressed thickness of the second connecting portion 322 is t2-d2. The thickness compression ratio of the second connecting portion 322 is (t2-d2) / t2. In one embodiment, 30% ≤ (t2-d2) / t2 ≤ 60%. This range of thickness compression ratio of the second connecting portion 322 not only improves the sealing effect, but also helps reduce the risk of excessive compression of the second connecting portion 322 and resulting plastic deformation, thereby extending the service life of the seal 32.

[0129] In one embodiment, 30%≤(t2-d2) / t2≤50%, which is beneficial to further ensure the sealing effect of the second connecting portion 322, and further reduce the risk of the second connecting portion 322 being over-compressed and thus plastically deformed, thereby extending the service life of the seal 32.

[0130] In one embodiment, the value of (t2-d2) / t2 is any one of 30%, 35%, 40%, 45%, 50%, 55% and 60%.

[0131] like Figure 4 、 Figure 5 and Figure 6As shown, in one embodiment, a first protrusion 3211 is provided on the side of the first connection portion 321 facing the first wall 11, and the first protrusion 3211 contacts and connects to the first wall 11, which is beneficial to improving the sealing effect of the first connection portion 321 connecting the first wall 11 and reducing the risk of foreign objects entering the first chamber 17 through the gap between the first connection portion 321 and the first wall 11.

[0132] In one embodiment, along the first direction X, the first protrusion 3211 is in a compressed and deformed state, which is beneficial to further improve the sealing effect of the first connection portion 321 connecting the first wall 11 and reduce the risk of foreign objects entering the first chamber 17 through the gap between the first connection portion 321 and the first wall 11.

[0133] Please refer to Figure 7 and Figure 8 In one embodiment, when viewed in the first direction X, the projection of the first protrusion 3211 is annular, which is beneficial to improving the sealing effect of the first connecting portion 321 connecting the first wall 11.

[0134] In one embodiment, there are multiple first protrusions 3211, and the multiple first protrusions 3211 are arranged at intervals, which is conducive to further improving the sealing effect of the first connection part 321 connecting the first wall 11 and reducing the risk of foreign objects entering the first chamber 17 through the gap between the first connection part 321 and the first wall 11.

[0135] In one embodiment, the first protrusion 3211 is a protruding structure with a hemispherical cross-section. The radius of the first protrusion 3211 is r1, and the distance between two adjacent first protrusions 3211 is d3, d3 ≥ 2*r1, which is beneficial to reducing the risk of multiple first protrusions 3211 contacting and squeezing each other after being compressed and deformed, and reducing the risk of multiple first protrusions 3211 being damaged due to mutual squeezing.

[0136] like Figure 4 、 Figure 5 、 Figure 8 and Figure 9 As shown, in one embodiment, a second protrusion 3221 is provided on the side of the second connection portion 322 facing the second wall 21, and the second protrusion 3221 contacts and connects the second wall 21, which is beneficial to improving the sealing effect of the second connection portion 322 connecting the second wall 21 and reducing the risk of foreign objects entering the second chamber 27 through the gap between the second connection portion 322 and the second wall 21.

[0137] In one embodiment, along the first direction X, the second protrusion 3221 is in a compressed and deformed state, which is beneficial to further improve the sealing effect of the second connection portion 322 connecting the second wall 21 and reduce the risk of foreign objects entering the second chamber 27 through the gap between the second connection portion 322 and the second wall 21.

[0138] Please refer to Figure 10 In one embodiment, when viewed in the first direction X, the projection of the second protrusion 3221 is annular, which is beneficial to improving the sealing effect of the second connecting portion 322 connecting the second wall 21.

[0139] In one embodiment, there are multiple second protrusions 3221, and the multiple second protrusions 3221 are arranged at intervals, which is conducive to further improving the sealing effect of the second connecting portion 322 connecting the second wall 21, and reducing the risk of foreign objects entering the second chamber 27 through the gap between the second connecting portion 322 and the second wall 21.

[0140] In one embodiment, the second protrusion 3221 is a protruding structure with a hemispherical cross-section. The radius of the second protrusion 3221 is r2, and the distance between two adjacent second protrusions 3221 is d4, d4 ≥ 2*r2, which is beneficial to reducing the risk of multiple second protrusions 3221 contacting and squeezing each other after being compressed and deformed, and reducing the risk of multiple second protrusions 3221 being damaged due to mutual squeezing.

[0141] like Figure 3 、 Figure 6 and Figure 9 As shown, in one embodiment, the first connection portion 321 and the first structural member 33 are disposed within the first chamber 17, and the first connection portion 321 and the first structural member 33 are located on the side of the first wall 11 facing away from the second wall 21. A portion of the third connection portion 323 is located within the first through-hole 111, which helps reduce the risk of foreign objects entering the first chamber 17 through the gap between the sealing member 32 and the first wall 11, and the gap between the sealing member 32 and the first structural member 33. In other embodiments, the first connection portion 321 and the first structural member 33 are disposed outside the first chamber 17 (not shown), and the first connection portion 321 is connected to the side of the first wall 11 facing away from the first chamber 17.

[0142] In one embodiment, the second connection portion 322 and the second structural member 34 are disposed within the second chamber 27, the second connection portion 322 and the second structural member 34 being located on the side of the second wall 21 facing away from the first wall 11, and a portion of the third connection portion 323 being located within the second through-hole 211, thereby reducing the risk of foreign matter entering the second chamber 27 through the gaps between the sealing member 32 and the second wall 21 and between the sealing member 32 and the second structural member 34. In other embodiments, the second connection portion 322 and the second structural member 34 are disposed outside the second chamber 27 (not shown), with the second connection portion 322 connected to the side of the second wall 21 facing away from the second chamber 27.

[0143] As an example, the following further describes the example in which the first connection portion 321 and the first structural member 33 are disposed in the first chamber 17 , and the second connection portion 322 and the second structural member 34 are disposed in the second chamber 27 .

[0144] like Figure 11 、 Figure 12 and Figure 13 As shown, in one embodiment, the sealing assembly 30 further includes a first connecting member 351 and a first fastening member 352. The first connecting member 351 is fixedly connected to the first wall 11. A portion of the first connecting member 351 passes through the first structural member 33 and extends from a side of the first structural member 33 facing away from the first wall 11. The first fastening member 352 is connected to the portion of the first connecting member 351 extending from the first structural member 33. The first fastening member 352 is located on a side of the first structural member 33 facing away from the first wall 11 and is in contact with and connected to the first structural member 33. The provision of the first connecting member 351 and the first fastening member 352 facilitates limiting the mutual separation of the first structural member 33 and the first wall 11, improves the connection stability between the first connecting portion 321 and the first wall 11, and reduces the risk of the first structural member 33 becoming loose, thereby affecting the sealing effect of the first connecting portion 321.

[0145] In one embodiment, the first connecting member 351 and the first fastening member 352 are connected by a threaded connection. By adjusting the position of the first fastening member 352 relative to the first connecting member 351, the distance between the first structural member 33 and the first wall 11 can be adjusted, thereby adjusting the thickness compression rate of the first connecting portion 321. This is simple and convenient to operate, facilitating installation and maintenance. Optionally, the first connecting member 351 includes a screw, and the first fastening member 352 includes a nut, which is sleeved onto the screw.

[0146] In other embodiments, the first connecting member 351 is fixedly connected to the first structural member 33 (not shown), a portion of the first connecting member 351 passes through the first wall 11 and extends into the first chamber 17, and the first fastener 352 is located in the first chamber 17 and connects the portion of the first connecting member 351 extending into the first chamber 17.

[0147] As an example, the following further describes the example of the first connecting member 351 being fixedly connected to the first wall 11 .

[0148] In one embodiment, the number of first connectors 351 and first fasteners 352 is relatively large, and both are multiple. One first connector 351 and one first fastener 352 are connected to form a first fastening assembly 35. The multiple first fastening assemblies 35 are spaced apart from each other, which helps improve the stability of the connection between the first structural member 33 and the first wall 11 and increases the consistency of the thickness compression rate in different areas of the first connecting portion 321, thereby improving the sealing effect. In the first direction X, the projections of the multiple first fastening assemblies 35 are connected in sequence to form an annular area. The projections of the first through hole 111 and the channel 31 are located within this annular area, which helps improve the sealing effect between the first connecting portion 321 and the first wall 11.

[0149] Please refer to Figure 6 、 Figure 7 and Figure 8 In one embodiment, the first connecting portion 321 is provided with a third through-hole 3212, through which a portion of the first connecting member 351 passes. This improves the stability of the connection between the first connecting portion 321 and the first wall 11 and reduces the risk of displacement of the first connecting portion 321 relative to the first wall 11, thereby affecting the sealing effect. In one embodiment, there are multiple third through-holes 3212, and the number and position of the multiple third through-holes 3212 correspond to the number and position of the multiple first connecting members 351. Each first connecting member 351 passes through one third through-hole 3212.

[0150] In other embodiments, the first connecting member 351 is separated from the first connecting portion 321 (not shown), and in the first direction X, the projections of multiple first connecting members 351 are sequentially connected to form an annular area, and the projection of the first connecting portion 321 is located within the annular area.

[0151] In one embodiment, the sealing assembly 30 further includes a first stopper 37. At least a portion of the first stopper 37 is located between the first structural member 33 and the first wall 11, connecting the first structural member 33 and the first wall 11. The first stopper 37 helps limit the proximity of the first structural member 33 and the first wall 11 along the first direction X, thereby reducing the risk of excessive compression of the first connecting portion 321 and shortening its service life.

[0152] In one embodiment, the first stopper 37 is fixedly connected to the first structural member 33 and contacts the first wall 11 to limit the first structural member 33 and the first wall 11 from approaching each other. In other embodiments, the first stopper 37 is fixedly connected to the first wall 11 (not shown) and contacts the first structural member 33.

[0153] As an example, the following further describes the example in which the first limiting member 37 is fixedly connected to the first structural member 33 and contacts the first wall 11 .

[0154] In one embodiment, the first position-limiting member 37 is fixedly connected to the first structural member 33 by welding. In one embodiment, the first position-limiting member 37 and the first structural member 33 are integrally formed by casting or injection molding.

[0155] In one embodiment, along the first direction X, the length of the portion of the first limiting member 37 located between the first structural member 33 and the first wall 11 is equal to the thickness of the first connecting portion 321 after being compressed and deformed. When the first limiting member 37 and the first structural member 33 are fixedly connected, the length of the first limiting member 37 extending from the first structural member 33 along the first direction X is equal to the preset compressed thickness of the first connecting portion 321, which is beneficial to improving assembly efficiency and improving the sealing effect of the first connecting portion 321.

[0156] In one embodiment, a portion of the first limiting member 37 passes through the first connecting portion 321 . In one embodiment, a portion of the first limiting member 37 passes through the third through hole 3212 .

[0157] In one embodiment, the first limiting member 37 is provided with a fifth through hole 371, the fifth through hole 371 passes through the first structural member 33 and the first limiting member 37, a portion of the first connecting member 351 passes through the fifth through hole 371, and the first connecting member 351 passes through the first structural member 33 through the fifth through hole 371, which is beneficial to simplifying the structure of the first structural member 33 and reducing the processing cost of the first structural member 33.

[0158] In one embodiment, the inner diameter of the fifth through hole 371 matches the outer diameter of the first connecting member 351, which is beneficial to improving the stability of the first fastening component 35 connecting to the first structural member 33 and reducing the risk of relative displacement between the first structural member 33 and the first fastening component 35.

[0159] In one embodiment, a third protrusion 3213 is further provided on the side of the first connection portion 321 facing the first wall 11. The third protrusion 3213 is spaced apart from the first protrusion 3211. The third protrusion 3213 contacts and connects to the first wall 11. Along the first direction X, the first protrusion 3211 is in a compressed and deformed state, which is beneficial to further improve the sealing effect of the first connection portion 321 connecting the first wall 11.

[0160] In one embodiment, in the first direction X, the projection of the first protrusion 3211 and the projection of the third protrusion 3213 form a first area 3214, and the first area 3214 is located between the projection of the first protrusion 3211 and the projection of the third protrusion 3213. The projection of the third through hole 3212 is located within the first area 3214, which is beneficial to reducing the risk of foreign objects entering the first chamber 17 through the third through hole 3212 or the fifth through hole 371, and improving the sealing effect of the seal 32.

[0161] In one embodiment, there are multiple third protrusions 3213, and the multiple third protrusions 3213 are arranged at intervals, which is conducive to further improving the sealing effect of the first connection part 321 connecting the first wall 11, and reducing the risk of foreign objects entering the first chamber 17 through the gap between the first connection part 321 and the first wall 11.

[0162] like Figure 8 、 Figure 9 、 Figure 10 、 Figure 11 and Figure 12As shown, in one embodiment, the sealing assembly 30 further includes a second connecting member 361 and a second fastening member 362. The second connecting member 361 is fixedly connected to the second wall 21. A portion of the second connecting member 361 passes through the second structural member 34 and extends from a side of the second structural member 34 facing away from the second wall 21. The second fastening member 362 is connected to the portion of the second connecting member 361 extending from the second structural member 34. The second fastening member 362 is located on a side of the second structural member 34 facing away from the second wall 21 and is in contact with and connected to the second structural member 34. The provision of the second connecting member 361 and the second fastening member 362 helps to improve the stability of the connection between the second connecting portion 322 and the second wall 21 and reduces the risk of the second structural member 34 becoming loose, thereby affecting the sealing effect of the second connecting portion 322.

[0163] In one embodiment, the second connecting member 361 and the second fastening member 362 are connected by threads. By adjusting the position of the second fastening member 362 relative to the second connecting member 361, the distance between the second structural member 34 and the second wall 21 can be adjusted, thereby adjusting the thickness compression rate of the second connecting portion 322. This is simple and convenient to operate, facilitating installation and maintenance. Optionally, the second connecting member 361 includes a screw, and the second fastening member 362 includes a nut, which is sleeved onto the screw.

[0164] In other embodiments, the second connecting member 361 is fixedly connected to the second structural member 34 (not shown), a portion of the second connecting member 361 passes through the second wall 21 and extends into the second chamber 27, and the second fastener 362 is located in the second chamber 27 and connects the portion of the second connecting member 361 extending into the second chamber 27.

[0165] As an example, the second connecting member 361 fixedly connected to the second wall 21 is taken as an example for further description.

[0166] In one embodiment, the number of second connecting members 361 and second fastening members 362 is relatively large, and both are multiple. One second connecting member 361 and one second fastening member 362 are connected to form a second fastening assembly 36. The multiple second fastening assemblies 36 are spaced apart from each other, which helps improve the stability of the second structural member 34 and the second wall 21, and improves the consistency of the thickness compression rate of different areas of the second connecting portion 322, thereby ensuring a good sealing effect. In the first direction X, the projections of the multiple second fastening assemblies 36 are connected in sequence to form an annular area. The projections of the second through hole 211 and the channel 31 are located within this annular area, which helps improve the sealing effect of the second connecting portion 322 connecting to the second wall 21.

[0167] In one embodiment, the second connecting portion 322 is provided with a fourth through hole 3222, through which a portion of the second connecting member 361 passes. This improves the stability of the second connecting portion 322 in connection with the second wall 21 and reduces the risk of displacement of the second connecting portion 322 relative to the second wall 21, thereby affecting the sealing effect. In one embodiment, there are multiple fourth through holes 3222, and the number and position of the multiple fourth through holes 3222 correspond to the number and position of the multiple second connecting members 361, with one second connecting member 361 passing through one fourth through hole 3222.

[0168] In other embodiments, the second connecting member 361 is separated from the second connecting portion 322 (not shown), and in the first direction X, the projections of multiple second connecting members 361 are sequentially connected to form an annular area, and the projection of the second connecting portion 322 is located within the annular area.

[0169] In one embodiment, the sealing assembly 30 also includes a second limit member 38, at least a portion of which is located between the second structural member 34 and the second wall 21, and connects the second structural member 34 and the second wall 21. Along the first direction X, the second limit member 38 is beneficial to limit the mutual approach of the second structural member 34 and the second wall 21, thereby reducing the risk of the second connection portion 322 being over-compressed and thus shortening its service life.

[0170] In one embodiment, the second stopper 38 is fixedly connected to the second structural member 34 and contacts the second wall 21 to limit the second structural member 34 and the second wall 21 from approaching each other. In other embodiments, the second stopper 38 is fixedly connected to the second wall 21 (not shown) and contacts the second structural member 34.

[0171] As an example, the second limiting member 38 is fixedly connected to the second structural member 34 and contacts the second wall 21 for further explanation.

[0172] In one embodiment, the second stopper 38 is fixedly connected to the second structural member 34 by welding. In one embodiment, the second stopper 38 and the second structural member 34 are integrally formed by casting or injection molding.

[0173] In one embodiment, along the first direction X, the length of the portion of the second limiter 38 located between the second structural member 34 and the second wall 21 is equal to the thickness of the second connecting portion 322 after being compressed and deformed. When the second limiter 38 and the second structural member 34 are fixedly connected, the length of the second limiter 38 extending from the second structural member 34 along the first direction X is equal to the preset compressed thickness of the second connecting portion 322, which is beneficial to improving assembly efficiency and ensuring the sealing effect of the second connecting portion 322.

[0174] In one embodiment, a portion of the second limiting member 38 passes through the second connecting portion 322 . In one embodiment, a portion of the second limiting member 38 passes through the third through hole 3212 .

[0175] In one embodiment, the second limiting member 38 is provided with a sixth through hole 381, the sixth through hole 381 passes through the second structural member 34 and the second limiting member 38, a portion of the second connecting member 361 passes through the sixth through hole 381, and the second connecting member 361 passes through the second structural member 34 through the sixth through hole 381, which is beneficial to simplifying the structure of the second structural member 34 and saving the processing cost of the second structural member 34.

[0176] In one embodiment, the inner diameter of the sixth through hole 381 matches the outer diameter of the second connecting member 361, which is beneficial to improving the stability of the second fastening component 36 connecting to the second structural member 34 and reducing the risk of relative displacement between the second structural member 34 and the second fastening component 36.

[0177] like Figure 8 、 Figure 9 and Figure 10 As shown, in one embodiment, a fourth protrusion 3223 is further provided on the side of the second connection portion 322 facing the second wall 21. The fourth protrusion 3223 is spaced apart from the second protrusion 3221. The fourth protrusion 3223 contacts and connects the second wall 21. Along the first direction X, the second protrusion 3221 is in a compressed and deformed state, which is beneficial to further improve the sealing effect of the second connection portion 322 connecting the second wall 21.

[0178] In one embodiment, in the first direction X, the projection of the second protrusion 3221 and the projection of the fourth protrusion 3223 form a second area 3224, and the second area 3224 is located between the projection of the second protrusion 3221 and the projection of the fourth protrusion 3223. The projection of the fourth through hole 3222 is located within the second area 3224, which is beneficial to reducing the risk of foreign objects entering the second chamber 27 through the fourth through hole 3222 or the sixth through hole 381, and improving the sealing effect of the seal 32.

[0179] In one embodiment, there are multiple fourth protrusions 3223, and the multiple fourth protrusions 3223 are arranged at intervals, which is conducive to further improving the sealing effect of the second connection part 322 connecting the second wall 21, and reducing the risk of foreign objects entering the second chamber 27 through the gap between the second connection part 322 and the second wall 21.

[0180] like Figure 14 As shown, in one embodiment, a seventh through hole 121 is provided on the third wall 12, there are multiple sealing assemblies 30, the energy storage system 100 also includes a third cabinet (not shown), and another sealing assembly 30 connects the third wall 12 and the third cabinet, so that the first cabinet 10 is connected in parallel with the third cabinet through the seventh through hole 121 on the third wall 12.

[0181] In one embodiment, the implementation of the first cabinet 10 being connected in parallel with the third cabinet through the seventh through hole 121 on the third wall 12 includes any one of the aforementioned implementations of the first cabinet 10 and the second cabinet 20 being connected in parallel, which will not be described in detail in this application.

[0182] like Figure 15 As shown, in one embodiment, an eighth through hole 221 is provided on the fourth wall 22, the number of sealing assemblies 30 is multiple, the energy storage system 100 also includes a fourth cabinet (not shown), and another sealing assembly 30 connects the fourth wall 22 and the fourth cabinet, so that the second cabinet 20 is connected in parallel with the fourth cabinet through the eighth through hole 221 on the fourth wall 22.

[0183] In one embodiment, the implementation of the second cabinet 20 being connected in parallel with the fourth cabinet through the eighth through hole 221 on the fourth wall 22 includes any one of the implementations of the first cabinet 10 and the second cabinet 20 being connected in parallel, which will not be described in detail in this application.

[0184] To summarize, in the energy storage system 100 of the present application, the first wall 11 of the first cabinet 10 and the second wall 21 of the second cabinet 20 are connected by the seal 32, so that the first chamber 17 of the first cabinet 10 is connected to the second chamber 27 of the second cabinet 20. The conductive member 40 can connect the first energy storage module 61 and the second energy storage module 62 by passing through the channel 31 on the seal 32, thereby reducing the influence of foreign objects on the objects in the first chamber 17, the objects in the second chamber 27 and the conductive member 40, and through the elastic deformation of the seal 32, it is beneficial to reduce the influence of the sealing effect of the seal 32 when the first cabinet 10 and the second cabinet 20 are relatively displaced.

[0185] In addition, those skilled in the art may also make other changes within the spirit of this application. Of course, these changes made according to the spirit of this application should be included in the scope disclosed in this application.

Claims

1. An energy storage system, characterized in that: include: A first cabinet includes a first chamber and a first wall, wherein the first wall is provided with a first through hole, and the first through hole is connected to the first chamber; a first energy storage module, disposed in the first chamber; A second cabinet includes a second chamber and a second wall, wherein the second wall is spaced apart from the first wall along a first direction, and the second wall is provided with a second through hole, and the second through hole is connected to the second chamber; a second energy storage module, disposed in the second chamber; The sealing assembly comprises a sealing member, wherein the sealing member connects the first wall and the second wall and is capable of elastic deformation, the sealing member having a channel, the channel communicating with the first through-hole and the second through-hole; the sealing member comprises a first connecting portion, a second connecting portion and a third connecting portion, the first connecting portion being connected to the first wall, the second connecting portion being connected to the second wall, the third connecting portion being located between the first connecting portion and the second connecting portion and connecting the first connecting portion and the second connecting portion, the channel passing through the first connecting portion, the second connecting portion and the third connecting portion, the third connecting portion being capable of elastic deformation; the sealing assembly further comprises a first structural member and a second structural member, the channel passing through the first structural member, along the first direction, the first connecting portion being located between the first structural member and the first wall, the first connecting portion being in a compressed and deformed state; the channel passing through the second structural member, along the first direction, the second connecting portion being located between the second structural member and the second wall, the second connecting portion being in a compressed and deformed state; A conductive member passes through the first through hole, the channel, and the second through hole and connects the first energy storage module and the second energy storage module.

2. The energy storage system according to claim 1, wherein: The first energy storage module includes a first connection end, the second energy storage module includes a second connection end, and the length of the conductive member is greater than the distance between the first connection end and the second connection end.

3. The energy storage system according to claim 1, wherein: The sealing assembly further comprises: a first limiting member, at least a portion of which is located between the first structural member and the first wall and connects the first structural member and the first wall; A second limiting member, at least a portion of which is located between the second structural member and the second wall, and connects the second structural member and the second wall.

4. The energy storage system according to claim 3, characterized in that The first limiting member is fixedly connected to the first structural member, and the first limiting member contacts and connects to the first wall; The second limiting member is fixedly connected to the second structural member, and the second limiting member is in contact with and connected to the second wall.

5. The energy storage system according to claim 3, wherein: The first connecting portion is provided with a third through hole, and a portion of the first limiting member passes through the third through hole; The second connecting portion is provided with a fourth through hole, and a portion of the second limiting member passes through the fourth through hole; The sealing assembly further comprises: a first connecting member fixedly connected to the first wall, wherein a portion of the first connecting member passes through the first limiting member and extends out of a side of the first structural member facing away from the first wall; a first fastener connected to a portion of the first connecting member extending out of the first structural member and contacting and connecting the first structural member; a second connecting member fixedly connected to the second wall, wherein a portion of the second connecting member passes through the second limiting member and extends out of a side of the second structural member facing away from the second wall; The second fastener is connected to a portion of the second connecting member extending out of the second structural member and contacts and connects with the second structural member.

6. The energy storage system according to claim 5, characterized in that A first convex portion is provided on a side of the first connecting portion facing the first wall, the first convex portion contacts and connects with the first wall, and the first convex portion is in a compressed and deformed state along the first direction; A second convex portion is provided on a side of the second connecting portion facing the second wall. The second convex portion contacts and connects to the second wall. Along the first direction, the second convex portion is in a compressed and deformed state.

7. The energy storage system according to claim 6, characterized in that: A third protrusion is further provided on the first connecting portion on a side facing the first wall. The third protrusion is spaced apart from the first protrusion and contacts the first wall. The third protrusion is in a compressed and deformed state along the first direction. A fourth protrusion is further provided on the second connecting portion on a side facing the second wall. The fourth protrusion is spaced apart from the second protrusion and contacts the second wall. The fourth protrusion is in a compressed and deformed state along the first direction. In the first direction, the projection of the first protrusion and the projection of the third protrusion form a first area, and the projection of the third through hole is located in the first area. The projection of the second protrusion and the projection of the fourth protrusion form a second area, and the projection of the fourth through hole is located in the second area.

8. The energy storage system according to claim 1, wherein: The first connection portion and the first structural member are disposed in the first cavity, at least a portion of the third connection portion is located between the first wall and the second wall, and the second connection portion and the second structural member are disposed in the second cavity.

9. The energy storage system according to claim 1, wherein: Along the first direction, the initial thickness of the first connecting portion is t1, the distance between the first structural member and the first wall is d1, and 30%≤(t1-d1) / t1≤60%; Along the first direction, the initial thickness of the second connecting portion is t2, the distance between the second structural member and the second wall is d2, and 30%≤(t2-d2) / t2≤60%.

10. The energy storage system according to claim 9, wherein: 30%≤(t1-d1) / t1≤50%; 30%≤(t2-d2) / t2≤50%.

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