Base, energy storage device housing and energy storage device

Abstract

The application relates to the technical field of energy storage, in particular to a base, an energy storage device shell and an energy storage device. The base comprises a bottom beam frame, the bottom beam frame comprises a cross beam and a longitudinal beam, and the cross beam and the longitudinal beam are connected; the cross beam comprises a first connecting part and a first bearing part which are connected to each other in the cross section of the extending direction of the cross beam; and / or the longitudinal beam comprises a second connecting part and a second bearing part which are connected to each other in the cross section of the extending direction of the longitudinal beam. Through the structure of the connecting part connecting the bearing part, the cross beam and / or the longitudinal beam can provide better bending resistance, have strong bearing capacity in the vertical direction, effectively resist the bending moment, and can accommodate more batteries.

Description

Technical Field

[0001] This application relates to the field of energy storage technology, and in particular to a base, an energy storage device housing, and an energy storage device. Background Technology

[0002] With the continuous development of battery technology, battery energy storage devices have also developed accordingly, enabling them to play a role in more fields and scenarios. For battery energy storage devices, the number of batteries installed directly affects the areal energy density of the device.

[0003] However, the limited bending resistance and heavy weight of existing energy storage devices restrict the improvement of their load-bearing capacity, thus preventing further increases in their energy density. Utility Model Content

[0004] Based on this, this application provides a base, an energy storage device housing, and an energy storage device to solve the problem that the load-bearing capacity and energy density of existing energy storage devices cannot be increased.

[0005] On one hand, this application provides a base, including:

[0006] The bottom beam frame includes horizontal beams and longitudinal beams, and the horizontal beams and longitudinal beams are connected.

[0007] The cross-section of the beam in its extending direction includes a first connecting portion and a first load-bearing portion that are interconnected; and / or

[0008] The longitudinal beam, in its cross-section along its extension direction, includes a second connecting portion and a second load-bearing portion that are interconnected.

[0009] In one possible implementation, the first connecting portion connects at least two first bearing portions, and the at least two first bearing portions are spaced apart along the height direction of the first bearing portions; and / or

[0010] The second connecting part connects at least two second bearing parts, and the at least two second bearing parts are spaced apart along the height direction of the second bearing parts.

[0011] In one possible implementation, at least one of the crossbeams and longitudinal beams has a cross-sectional shape in its extending direction that includes at least one of the following: I-shaped, C-shaped, II-shaped, and W-shaped.

[0012] In one possible implementation, the crossbeam includes a first crossbeam and a second crossbeam, which are spaced apart along a first direction.

[0013] In one possible implementation, the longitudinal beam includes a first longitudinal beam and a second longitudinal beam, which are spaced apart along a second direction.

[0014] The first longitudinal beam connects the first cross beam and the second cross beam at one end along the second direction; the second longitudinal beam connects the first cross beam and the second cross beam at the other end along the second direction.

[0015] In a possible implementation, it further includes a strengthening beam, which is connected to the inner side of the frame of the bottom beam frame.

[0016] In a possible implementation, the strengthening beam includes at least one strengthening cross beam and / or at least one strengthening longitudinal beam.

[0017] In a possible implementation, the strengthening cross beam includes a first strengthening cross beam and a second strengthening cross beam; the first strengthening cross beam and the second strengthening cross beam are arranged at intervals along the first direction, and along the second direction, the first strengthening cross beam and the second strengthening cross beam are respectively connected to the longitudinal beam.

[0018] In a possible implementation, the strengthening longitudinal beam includes a first strengthening longitudinal beam and a second strengthening longitudinal beam; the first strengthening longitudinal beam and the second strengthening longitudinal beam are arranged at intervals along the second direction, and along the first direction, the first strengthening longitudinal beam and the second strengthening longitudinal beam are respectively connected to the cross beam, the first strengthening cross beam and the second strengthening cross beam.

[0019] In a possible implementation, the shape of the strengthening beam includes at least one of cross-shaped, 廾-shaped, 丰-shaped, and well-shaped.

[0020] In a possible implementation, it further includes a strengthening rib, and both ends of the strengthening rib are respectively connected to the cross beam and the strengthening longitudinal beam.

[0021] In a possible implementation, the strengthening rib and the cross beam and the strengthening longitudinal beam form a triangular structure.

[0022] In a possible implementation, it further includes a strengthening rib, and both ends of the strengthening rib are respectively connected to the longitudinal beam and the strengthening cross beam.

[0023] In a possible implementation, the strengthening rib and the longitudinal beam and the strengthening cross beam form a triangular structure.

[0024] In a possible implementation, it further includes a strengthening rib, and both ends of the strengthening rib are respectively connected to the strengthening longitudinal beam and the strengthening cross beam.

[0025] In a possible implementation, the strengthening rib and the strengthening longitudinal beam and the strengthening cross beam form a triangular structure.

[0026] In a possible implementation, it further includes a strengthening rib, and both ends of the strengthening rib are respectively connected to the cross beam and the longitudinal beam.

[0027] In a possible implementation, the strengthening rib and the cross beam and the longitudinal beam form a triangular structure.

[0028] In a possible implementation, the base is used to carry the battery assembly.

[0029] In one possible implementation, the base has a dimension of L1 along the first direction and a dimension of L2 along the second direction, where L1 and L2 satisfy: 500mm≤L≤6000mm, 500mm≤L≤6000mm.

[0030] In one possible implementation, the base supports the battery module with an area energy density of W, where W satisfies: 400Wh / m² 2 ≤W≤600Wh / m 2 .

[0031] On the other hand, this application provides an energy storage device housing, including the aforementioned base.

[0032] In one possible implementation, a door panel is also included, which is connected to the bottom beam frame, and the door panel and the base form a receiving space for accommodating the battery module.

[0033] In one possible implementation, the door panel includes a door frame, which is connected to a bottom beam frame.

[0034] In one possible implementation, the door panel also includes a skin that is attached to the door frame.

[0035] In one possible implementation, the skin is welded to the door frame.

[0036] In one possible implementation, the door panel is detachably connected to the bottom beam frame.

[0037] In one possible implementation, the door panel is connected to the bottom beam frame by bolts.

[0038] In one possible implementation, a top panel is also included, which is connected to the door panel to enclose the accommodating space.

[0039] In one possible implementation, the door panel and the top panel are detachably connected.

[0040] In one possible implementation, the door panel and the top panel are connected by bolts.

[0041] In one possible implementation, the door panel includes a front door panel, a rear door panel, a left door panel, and a right door panel, with the front door panel connected to one side of the left and right door panels, and / or the rear door panel connected to the other side of the left and right door panels.

[0042] In one possible implementation, the front door panel is detachably connected to the left and right door panels, and the rear door panel is detachably connected to the left and right door panels.

[0043] In one possible implementation, the door panel has a lifting lug on the side away from the bottom beam frame.

[0044] In one possible implementation, the lifting lug is located on the side of the door frame away from the bottom beam frame.

[0045] On the other hand, this application provides an energy storage device, including a plurality of battery modules and an energy storage device housing as claimed in any one of the claims, wherein the plurality of battery modules are disposed on a base.

[0046] In one possible implementation, the energy storage device also includes a fixing block that connects the bottom beam frame to an adjacent battery module or two adjacent battery modules along the height direction.

[0047] In one possible implementation, the fixing block connects the load-bearing portion of the crossbeam and / or longitudinal beam to the adjacent battery module.

[0048] The base, energy storage device housing, and energy storage device provided in this application, by setting a bottom beam frame on the base and forming the bottom beam frame through connected horizontal beams and vertical beams, and by adopting a connecting part structure that connects the load-bearing parts, can provide better bending resistance, giving it a strong load-bearing capacity in the vertical direction, effectively resisting bending moments, and thus accommodating more batteries. Attached Figure Description

[0049] To more clearly illustrate the technical solutions in the embodiments of this application or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are some embodiments of this application. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0050] Figure 1 This is an exploded structural diagram of the energy storage device provided in the embodiments of this application;

[0051] Figure 2 for Figure 1 A schematic diagram of the base of the energy storage device shown;

[0052] Figure 3 for Figure 1 A schematic diagram of the connection between the base and the battery module in the energy storage device shown.

[0053] Figure 4 for Figure 3 The diagram shows the structure after the base is connected to the battery module.

[0054] Figure 5 These are schematic diagrams of two different energy storage devices provided in the embodiments of this application;

[0055] Figure 6 for Figure 5The diagram shows the structure of two different energy storage devices installed in an open-top box.

[0056] Explanation of reference numerals in the attached figures:

[0057] 100 - Energy storage device housing; 10 - Base; 11 - Bottom beam frame; 111 - Crossbeam; 112 - Longitudinal beam; 113 - First crossbeam; 114 - Second crossbeam; 115 - First longitudinal beam; 116 - Second longitudinal beam; 12 - Reinforcing beam; 121 - Reinforcing crossbeam; 122 - Reinforcing longitudinal beam; 123 - First reinforcing crossbeam; 124 - Second reinforcing crossbeam; 125 - First reinforcing longitudinal beam; 126 - Second reinforcing longitudinal beam; 13 - Reinforcing rib; 20 - Door panel; 21 - Door frame; 22 - Skin; 23 - Front door panel; 24 - Rear door panel; 25 - Left door panel; 26 - Right door panel; 27 - Lifting lug; 30 - Top plate; 200 - Energy storage device; 201 - Battery module; 202 - Fixing block. Detailed Implementation

[0058] To make the objectives, technical solutions, and advantages of this application clearer, the technical solutions in the embodiments of this application will be described in more detail below with reference to the accompanying drawings. In the drawings, the same or similar reference numerals denote the same or similar components or components having the same or similar functions throughout. The described embodiments are some, but not all, of the embodiments of this application. The embodiments described below with reference to the accompanying drawings are exemplary and intended to explain this application, and should not be construed as limiting this application. All other embodiments obtained by those skilled in the art based on the embodiments of this application without creative effort are within the scope of protection of this application. The embodiments of this application will be described in detail below with reference to the accompanying drawings.

[0059] In the description of this application, it should be noted that, unless otherwise expressly specified and limited, the terms "installation," "connection," and "linking" should be interpreted broadly. For example, they can refer to a fixed connection, an indirect connection through an intermediate medium, or the internal communication between two components or the interaction between two components. Those skilled in the art can understand the specific meaning of the above terms in this application according to the specific circumstances.

[0060] In the description of this application, it should be understood that the terms "upper", "lower", "front", "back", "vertical", "horizontal", "top", "bottom", "inner", "outer", etc., indicate the orientation or positional relationship based on the accompanying drawings, and are only for the convenience of describing this application and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of this application.

[0061] The terms “first,” “second,” and “third” (if any) in the specification, claims, and accompanying drawings of this application are used to distinguish similar objects and are not necessarily used to describe a specific order or sequence.

[0062] Furthermore, the terms “comprising” and “having”, and any variations thereof, are intended to cover non-exclusive inclusion, such that a process, method, system, product, or display that includes a series of steps or units is not necessarily limited to those steps or units that are explicitly listed, but may include other steps or units that are not explicitly listed or that are inherent to such process, method, product, or display.

[0063] With the continuous development of battery technology, battery energy storage devices have also developed accordingly, enabling them to play a role in more fields and scenarios. For battery energy storage devices, the number of batteries installed directly affects the areal energy density of the device.

[0064] However, the limited bending resistance and heavy weight of existing energy storage devices restrict the improvement of their load-bearing capacity, thus preventing further increases in their energy density.

[0065] After repeated consideration and verification, the inventors discovered that using I-beam structural components on the base of the energy storage device, compared to traditional square steel tube structures, provides better bending resistance due to the H-shaped cross-section of the I-beam base beam. This gives it stronger load-bearing capacity in the vertical direction, effectively resisting bending moments and thus accommodating more batteries. For supporting battery modules of equal weight, the I-beam structure design simplifies the base structure, reduces the number of welds, and increases bending strength. Simultaneously, the lightweight design of the I-beam structure ensures sufficient structural strength while reducing overall structural weight, helping to save material costs.

[0066] In view of this, this application provides a base for supporting a battery assembly, comprising:

[0067] The bottom beam frame includes horizontal beams and longitudinal beams, and the horizontal beams and longitudinal beams are connected.

[0068] The cross-section of the beam in its extending direction includes a first connecting portion and a first load-bearing portion that are interconnected; and / or the cross-section of the longitudinal beam in its extending direction includes a second connecting portion and a second load-bearing portion that are interconnected.

[0069] By installing a bottom beam frame on the base, which is formed by connecting crossbeams and longitudinal beams, and employing a connecting structure for the load-bearing components, better bending resistance can be provided, giving it a strong load-bearing capacity in the vertical direction and effectively resisting bending moments, thus accommodating more batteries. Simultaneously, the lightweight design of the load-bearing and connecting structures ensures sufficient structural strength to the bottom beam frame while reducing material usage, thereby reducing the overall structural weight. This increases the area energy density of the energy storage device casing and saves material costs.

[0070] The contents of this application will now be described in detail with reference to the accompanying drawings, so that those skilled in the art can have a clearer and more detailed understanding of the contents of this application.

[0071] Figure 1 This is a schematic diagram of the exploded structure of the energy storage device provided in the embodiments of this application. Figure 2 for Figure 1 A schematic diagram of the base of the energy storage device shown. Figure 3 for Figure 1 The diagram shows the structure of the energy storage device in which the base connects to the battery module. Figure 4 for Figure 3 The diagram shows the structure after the base is connected to the battery module. Figure 5 The diagram shows the structures of two different energy storage devices provided in the embodiments of this application. Figure 6 for Figure 5 The diagram shows the structure of two different energy storage devices installed in an open-top box.

[0072] like Figure 1 As shown in the embodiment of this application, the energy storage device housing 100 is used in the energy storage device 200. The energy storage device 200 includes the energy storage device housing 100 and battery modules 201. Multiple battery modules 201 are sequentially placed in the energy storage device housing 100. The energy storage device housing 100 is used to protect the battery modules 201 to ensure the safety and stability of the battery modules 201.

[0073] The energy storage device housing 100 includes a base 10, a door panel 20, and a top panel 30. The base 10 is connected to the door panel 20 to form a receiving space. The receiving space is used to house the battery module 201. The top panel 30 is connected to the door panel 20, thereby enclosing the receiving space.

[0074] The base 10 is used to support the battery assembly. The battery assembly can be a cell, a battery module 201, a battery cluster, or any combination thereof.

[0075] like Figure 2 As shown, the base 10 includes a bottom beam frame 11. The bottom beam frame 11 includes a crossbeam 111 and a longitudinal beam 112, which are connected together.

[0076] In one possible implementation, the crossbeam 111 includes a first connecting portion and a first load-bearing portion interconnected in its cross-section along its extension direction; and / or the longitudinal beam 112 includes a second connecting portion and at least two second load-bearing portions interconnected in its cross-section along its extension direction.

[0077] By setting a bottom beam frame 11 on the base 10, and forming the bottom beam frame 11 with connected crossbeams 111 and longitudinal beams 112, the crossbeams 111 and / or longitudinal beams 112, compared with the traditional square steel tube structure, provide better bending resistance by adopting a connecting structure for the load-bearing parts. This gives them a stronger load-bearing capacity in the vertical direction, effectively resisting bending moments, and thus accommodating more batteries. At the same time, the lightweight design of the load-bearing and connecting structures, while ensuring sufficient structural strength to the bottom beam frame 11, also reduces the use of materials, thereby reducing the overall structural weight. This increases the area energy density of the energy storage device casing 100 and saves material costs.

[0078] In one possible implementation, the crossbeam 111 includes a first connecting portion and at least two first bearing portions in its cross-section along its extension direction, the first connecting portion connecting the at least two first bearing portions, and the at least two first bearing portions being spaced apart along the height direction of the first bearing portions; and / or the longitudinal beam 112 includes a second connecting portion and at least two second bearing portions in its cross-section along its extension direction, the second connecting portion connecting the at least two second bearing portions, and the at least two second bearing portions being spaced apart along the height direction of the second bearing portions.

[0079] The dual support configuration provides better load-bearing capacity, allowing more batteries to be placed on the base 10.

[0080] In one possible implementation, several crossbeams 111 are connected end-to-end to several longitudinal beams 112. The cross-sectional shape of at least one of the crossbeams 111 and longitudinal beams 112 in the direction of extension is I-shaped.

[0081] In one possible implementation, at least one of the crossbeams 111 and the longitudinal beams 112 has a cross-sectional shape in its extending direction that includes at least one of the following: I-shaped, C-shaped, II-shaped, and W-shaped.

[0082] In one possible implementation, the crossbeam 111 and / or the longitudinal beam 112 are made of I-beams.

[0083] The crossbeams 111 and / or the longitudinal beams 112 adopt an I-shaped cross-section design. Compared with the traditional square steel tube structure, the I-shaped structure provides superior bending resistance. This gives the structure a strong load-bearing capacity in the vertical direction, effectively resisting bending moments. As a result, while reducing the height of the base 10, the energy storage device housing 100 can accommodate more battery modules 201, increasing the housing capacity of the energy storage device housing 100.

[0084] Meanwhile, the I-beam structure not only provides sufficient structural strength, but also reduces material usage through its lightweight design. This not only reduces the overall weight of the energy storage device housing 100, but also lowers material costs and increases the area energy density of the energy storage device housing 100.

[0085] In one possible implementation, the crossbeam 111 includes a first crossbeam 113 and a second crossbeam 114, which are spaced apart along a first direction x.

[0086] The spacing between the two crossbeams 111 improves the structural stability of the base 10.

[0087] In one possible implementation, the longitudinal beam 112 includes a first longitudinal beam 115 and a second longitudinal beam 116, which are spaced apart along a second direction y.

[0088] The first longitudinal beam 115 connects the first transverse beam 113 and the second transverse beam 114 at one end along the second direction; the second longitudinal beam 116 connects the first transverse beam 113 and the second transverse beam 114 at the other end along the second direction.

[0089] The two longitudinal beams 112 are spaced apart and connected to the corresponding transverse beams 111, which improves the structural stability of the base 10.

[0090] In one possible implementation, the base 10 further includes a reinforcing beam 12. The reinforcing beam (12) is connected to the inner side of the bottom beam frame (11), that is, the reinforcing beam 12 connects the oppositely arranged crossbeams 111 and / or longitudinal beams 112. The door panel 20 is connected to the bottom beam frame 11.

[0091] The bottom beam frame 11 is formed by the horizontal beams 111 and the longitudinal beams 112 connected end to end, and the horizontal beams 111 and / or the longitudinal beams 112 are connected by the reinforcing beams 12. The reinforcing beams 12 help to evenly distribute the stress applied to the horizontal beams 111 and the longitudinal beams 112, which can effectively improve the load distribution, resist multi-directional bending deformation, reduce stress concentration, reduce structural fatigue and potential material failure risks, thereby enhancing the overall strength of the base 10.

[0092] In a possible implementation, the reinforcing beam 12 includes at least one reinforcing cross beam 121 and / or at least one reinforcing longitudinal beam 122. The reinforcing cross beam 121 connects the longitudinals 112 arranged oppositely. The reinforcing longitudinal beam 122 connects the cross beams 111 arranged oppositely.

[0093] By adding reinforcing longitudinal beams 122 between the cross beams 111 and adding reinforcing cross beams 121 between the longitudinals 112, additional support paths are formed, which can significantly improve the flexural rigidity of the bottom beam frame 11. This enables the energy storage device housing 100 to better resist externally applied bending forces, reduce deformation, and thus protect the internal battery modules 201.

[0094] The reinforcing cross beam 121 connects the longitudinals 112 arranged oppositely, while the reinforcing longitudinal beam 122 connects the cross beams 111 arranged oppositely, thereby forming a cross-connected grid-like structure on the base 10. The grid-like support structure formed by this cross-connection method can effectively disperse and transmit loads from all directions, thereby improving the overall stability of the base 10. The cross-connected reinforcing beam 12 structure can more effectively support and distribute the weight, enabling the energy storage device housing 100 to accommodate more battery modules 201, thus increasing the total capacity of the energy storage device 200.

[0095] In a possible implementation, the reinforcing cross beam 121 includes a first reinforcing cross beam 123 and a second reinforcing cross beam 124. The first reinforcing cross beam 123 and the second reinforcing cross beam 124 are arranged at intervals along the first direction x, and along the second direction y, the first reinforcing cross beam 123 and the second reinforcing cross beam 124 are respectively connected to the longitudinal 112.

[0096] The spaced arrangement of the two reinforcing cross beams 121 improves the structural stability of the base 10.

[0097] In a possible implementation, the reinforcing longitudinal beam 122 includes a first reinforcing longitudinal beam 125 and a second reinforcing longitudinal beam 126. The first reinforcing longitudinal beam 125 and the second reinforcing longitudinal beam 126 are arranged at intervals along the second direction y, and along the first direction x, the first reinforcing longitudinal beam 125 and the second reinforcing longitudinal beam 126 are respectively connected to the cross beam 111, the first reinforcing cross beam 123, and the second reinforcing cross beam 124.

[0098] The spaced arrangement of the two reinforcing longitudinal beams 122 improves the structural stability of the base 10.

[0099] In a possible implementation, the shape of the reinforcing beam 12 includes at least one of a cross shape, a 廾 shape, a 丰 shape, and a well shape. That is, the reinforcing beam includes at least one reinforcing cross beam 121 and at least one reinforcing longitudinal beam 122.

[0100] In one possible implementation, there are two reinforcing crossbeams 121 and two reinforcing longitudinal beams 122, forming a grid structure.

[0101] The "well" structure, through the intersection of multiple reinforcing horizontal beams 121 and reinforcing vertical beams 122, forms a more complex support system. This allows for a more even distribution of loads on the structure, reducing stress concentration in localized areas and lowering the risk of structural fatigue and material failure. By increasing the number of intersecting beams, the "well" structure improves the overall frame's stiffness and stability, better supporting and distributing weight, and enhancing the load-bearing capacity of the energy storage device 200, enabling it to accommodate more battery modules 201. Through its complex intersecting layout, the "well" structure provides more comprehensive reinforcement to the entire bottom beam frame 11, improving the structural performance and efficiency of the base 10 without significantly increasing material usage.

[0102] Compared to the "cross" structure, the multi-beam cross design of the "well" structure provides additional support paths, which helps to disperse stress and can more effectively resist bending deformation from multiple directions, avoiding excessive stress on a single bottom beam. This can improve the stability and durability of the energy storage device 200 under various operating conditions.

[0103] In one possible implementation, the base also includes a reinforcing rib 13, which is disposed at the connection between the crossbeam 111 and the longitudinal beam 112, the connection between the crossbeam 111 and the reinforcing longitudinal beam 122, or the connection between the longitudinal beam 112 and the reinforcing crossbeam 121.

[0104] In one possible implementation, the two ends of the stiffener 13 are connected to the crossbeam 111 and the stiffener 122, respectively.

[0105] The reinforcing rib 13 connects the crossbeam 111 and the reinforcing longitudinal beam 122, improving the structural stability of the base 10.

[0106] In one possible implementation, the stiffener 13 forms a triangular structure with the crossbeam 111 and the stiffener 122.

[0107] The triangular structure has higher structural stability.

[0108] In one possible implementation, the two ends of the stiffener 13 are connected to the longitudinal beam 112 and the reinforcing crossbeam 121, respectively.

[0109] The reinforcing rib 13 connects the longitudinal beam 112 and the reinforcing crossbeam 121, improving the structural stability of the base 10.

[0110] In one possible implementation, the stiffener 13 forms a triangular structure with the longitudinal beam 112 and the reinforcing crossbeam 121.

[0111] The triangular structure has higher structural stability.

[0112] In one possible implementation, the two ends of the reinforcing rib 13 are connected to the reinforcing longitudinal beam 122 and the reinforcing transverse beam 121, respectively.

[0113] The reinforcing rib 13 connects the reinforcing longitudinal beam 122 and the reinforcing transverse beam 121, improving the structural stability of the base 10.

[0114] In one possible implementation, the stiffener 13 forms a triangular structure with the stiffener longitudinal beam 122 and the stiffener transverse beam 121.

[0115] The triangular structure has higher structural stability.

[0116] In one possible implementation, the two ends of the stiffener 13 are connected to the crossbeam 111 and the longitudinal beam 112, respectively.

[0117] The reinforcing rib 13 connects the crossbeam 111 and the longitudinal beam 112, improving the structural stability of the base 10.

[0118] In one possible implementation, the stiffener 13 forms a triangular structure with the crossbeam 111 and the longitudinal beam 112.

[0119] The triangular structure has higher structural stability.

[0120] By rationally arranging the reinforcing ribs 13, especially in the stress-prone parts of the base 10, the structural performance of the base 10 can be improved without significantly increasing the amount of material used, which helps to reduce material costs and overall weight while maintaining structural strength.

[0121] The rational arrangement of the stiffeners 13, especially the diagonal bracing stiffeners, effectively disperses stress concentration at the connection points of the bottom beam frame 11, helping to reduce stress loads in local areas and decrease material fatigue and potential failure risks. Through the connection of the stiffeners 13, the stress distribution among the components in the base 10 is more uniform, preventing local overload and thus improving the reliability and durability of the entire structure. The stiffeners 13 significantly enhance the shear strength of the base 10, enabling the structure to better resist shear forces and increasing its stability under dynamic and impact loads. The stiffeners 13 also enhance the overall structural stability of the base 10, helping to maintain its structural integrity, especially when subjected to large loads.

[0122] In one possible implementation, the base 10 is used to support the battery assembly.

[0123] The battery assembly can be a cell, a battery module 201, a battery cluster, or any combination thereof.

[0124] like Figure 3 and Figure 4 As shown, in one possible implementation, in order to improve space utilization, when placing the battery module 201 on the base 10, the battery module 201 is maximized while leaving space around the mounting door panel 20.

[0125] In one possible implementation, the base has a dimension of L1 along the first direction and a dimension of L2 along the second direction, where L1 and L2 satisfy: 500mm≤L1≤6000mm, 500mm≤L2≤6000mm.

[0126] In one possible implementation, the base 10 has a horizontal dimension of 2782mm × 1580mm, and the battery module 201 has a horizontal dimension of 2662mm × 1555mm. This minimizes the distance between the door panel 20 and the battery module 201, accommodating the battery module 201 with maximum energy capacity through minimal sidewall clearance. This improves space utilization, reduces unit energy construction costs, and maximizes the area energy density of the energy storage device 200.

[0127] Area energy density refers to the energy contained in a system per unit area.

[0128] In one possible implementation, the base 10 supports the battery module with an area energy density of W, where W satisfies: 400Wh / m² 2 ≤W≤600Wh / m 2 .

[0129] The area energy density that existing energy storage cabinets on the market can achieve is generally 200-400 kWh / m². 2 The energy storage device housing 100 of this application minimizes the distance between the door panel 20 and the battery module 201, thereby accommodating a larger energy battery module 201 with minimal sidewall gap, thus maximizing the area energy density of the energy storage device 200.

[0130] Optionally, the bottom area of ​​the energy storage device housing 100 is (1930mm + 1730mm) × 2860mm, the usable energy of the energy storage device 200 is 6002kWh, and the area energy density of the energy storage device 200 reaches 573.4kWh / m². 2 .

[0131] like Figure 1 As shown, in one possible implementation, the door panel 20 includes a door frame 21 and a skin 22, with the door frame 21 connected to the bottom beam frame 11 and the skin 22 connected to the door frame 21.

[0132] The connection between the door frame 21 and the bottom beam frame 11 provides a solid foundation, giving the door panel 21 high overall structural strength. The design of the door frame 21 increases the rigidity of the door panel 20, preventing it from deforming during operation, helping to maintain the flatness and stability of the door panel 20, and improving the overall structural integrity of the energy storage device 200.

[0133] The door frame 21 effectively supports the skin 22, ensuring the door panel 20 remains stable and robust during use. By attaching the skin 22 to the door frame 21, installation and maintenance become easier. The skin 22 can be relatively easily removed and replaced.

[0134] The door frame 21 provides a stable boundary, allowing the skin 22 to fit better, thereby improving the sealing performance of the door panel 20, which is especially important for protecting the internal battery module 201 from external environmental influences such as moisture and dust.

[0135] By designing the skin 22 separately from the door frame 21, different materials and thicknesses can be flexibly selected to meet specific functional requirements and cost considerations, allowing for lightweighting or other specific design goals to be achieved without affecting structural strength.

[0136] In one possible implementation, the skin 22 is welded to the door frame 21.

[0137] Through welding, the skin 22 and the door frame 21 form an integral structure. The connection between the skin 22 and the door frame 21 is very strong, providing a high-strength bond and enhancing the overall strength and durability of the door panel 20. The welded connection reduces the possibility of movement and loosening between the skin 22 and the door frame 21, increasing the rigidity and stability of the door panel 20. This ensures that the door panel 20 maintains its shape and function during operation and transportation, reducing the need for maintenance and repair. The welded connection also effectively resists vibration and impact, ensuring the structural integrity of the energy storage device 200 operating in dynamic environments.

[0138] Welding can achieve seamless connection, thereby improving the sealing performance of the door panel 20 and effectively preventing dust, moisture and other external factors from entering the energy storage device 200 and protecting the internal battery module 201.

[0139] Welding can simplify assembly steps during manufacturing and reduce the need for additional fasteners (such as screws or rivets), thereby reducing production costs and time.

[0140] In one possible implementation, the door panel 20 is detachably connected to the bottom beam frame 11 and / or the top plate 30.

[0141] The detachable connection allows for easy removal of the door panel 20, enabling quick inspection and replacement of internal components of the energy storage device 200. This facilitates regular maintenance and repair, reducing downtime and maintenance costs. If the door panel 20 is damaged, the detachable design allows for individual replacement of the damaged part without replacing the entire energy storage device housing 100, significantly reducing replacement costs and resource waste.

[0142] With its detachable design, the energy storage device 200 is more flexible and can be reconfigured or expanded as needed. For example, different types or sizes of door panels 20 can be replaced to accommodate new functional requirements or technological upgrades.

[0143] Meanwhile, the detachable door panel 20 design reduces the overall weight and volume during transportation and installation, making handling and installation easier. This is especially useful for energy storage systems that need to be assembled on-site, solving the problem of excessive weight when forklifts are used to move the equipment into the cabinet.

[0144] In one possible implementation, the door panel 20 is bolted to the bottom beam frame 11 and / or the top plate 30.

[0145] Bolted connections provide a reliable mechanical connection, ensuring a tight fit between the door panel 20 and the bottom beam frame 11 and the top plate 30, thereby enhancing the stability and strength of the overall structure of the energy storage device housing 100.

[0146] Bolted connections make the installation and disassembly of door panel 20 relatively simple and quick, requiring no special tools or techniques. This facilitates on-site installation and maintenance, and helps to automate product production. Bolted connections allow for fine-tuning during installation to ensure proper alignment and sealing of door panel 20, helping to adapt to different installation conditions and environments. With appropriate bolt tightening force, the connection between door panel 20 and the bottom beam frame 11 and top plate 30 can effectively resist vibration and impact, maintaining structural integrity and functionality.

[0147] Due to the reversibility of the bolted connection, the door panel 20 can be easily disassembled for maintenance, repair, or replacement, which helps extend the service life of the energy storage device 200 and reduce maintenance costs. If the door panel 20 or its components need to be replaced, the bolted connection allows for the replacement of the damaged parts individually without having to replace the entire energy storage device housing 100, significantly reducing replacement costs and resource waste.

[0148] In one possible implementation, the door panel includes a front door panel 23, a rear door panel 24, a left door panel 25, and a right door panel 26. The front door panel 23 is connected to one side of the left door panel 24 and the right door panel 25, and the rear door panel 26 is connected to the other side of the left door panel 24 and the right door panel 25.

[0149] With the design of multiple door panels 20, specific door panels 20 can be opened as needed, thereby flexibly managing the operating space. In environments with limited space, only the necessary door panels 20 can be opened for operation.

[0150] The design of multiple door panels 20, through a reasonable locking and sealing mechanism, can improve the overall safety and sealing of the energy storage device housing 100, preventing dust, moisture and other external factors from entering the interior of the energy storage device 200. By dividing the door panels 20 into multiple parts, the overall structure can better distribute stress, improving the structural strength and stability of the energy storage device 200.

[0151] The design of multiple door panels 20 supports modular construction, allowing each door panel 20 to be designed and manufactured individually, which helps to standardize production and reduce manufacturing costs, while also facilitating replacement and upgrades.

[0152] Multiple smaller door panels 20 are easier to transport and install than a single large door panel 20, reducing the need for large transport equipment and installation space.

[0153] In one possible implementation, the front door panel 23 is detachably connected to the left door panel 24 and the right door panel 25, and / or the rear door panel 26 is detachably connected to the left door panel 24 and the right door panel 25.

[0154] The detachable connection allows for easy removal of the front door panel 23 and rear door panel 26, enabling quick inspection and replacement of internal components of the energy storage device 200. This facilitates regular maintenance and repair, reducing downtime and maintenance costs. If a single door panel 20 is damaged, the detachable design allows for individual replacement of the damaged part without having to replace the entire door panel 20, significantly reducing replacement costs and resource waste.

[0155] With its detachable design, the energy storage device 200 is more flexible and can be reconfigured or expanded as needed. For example, different types or sizes of door panels 20 can be replaced to accommodate new functional requirements or technological upgrades.

[0156] Meanwhile, the removable door panel 20 design reduces overall weight and volume during transportation and installation, making handling and installation easier, which is especially useful for energy storage systems that need to be assembled on-site.

[0157] The detachable design also supports modular construction, allowing each door panel 20 to be designed and manufactured individually, which helps standardize production and reduce manufacturing costs, while also facilitating replacement and upgrades.

[0158] The energy storage device 200 adopts a four-sided detachable door panel 20 bolted structure, which eliminates the need for forklift transport of the stacked battery modules 201 into the cabinet. The specific installation sequence includes first assembling the left door panel 24 and right door panel 25, then assembling the top panel 30, and finally assembling the front door panel 23 and rear door panel 26. Each door panel 20 is assembled separately, realizing the door panel design scheme for battery module 201 cabinet entry, which has the advantages of convenient processing and simple installation. Furthermore, the detachable door panel 20 design not only eliminates the forklift clearance reserved for battery module 201 cabinet entry, but also eliminates the need for pallet design for non-forklift battery module 201 cabinet entry methods. These two points effectively improve the area utilization rate of the base 10, that is, increase its area energy density, effectively improve the volume utilization rate of the energy storage device 200, and reduce material costs and material waste caused by unpacking and transportation.

[0159] In one possible implementation, the front door panel 23 is bolted to the left door panel 24 and the right door panel 25, and the rear door panel 26 is bolted to the left door panel 24 and the right door panel 25.

[0160] In one possible implementation, the door panel 20 is provided with a lifting lug 27 on the side away from the bottom beam frame 11.

[0161] The lifting lug 27 provides a convenient gripping and support point. During handling and installation, the lifting lug 27 can ensure the stability of the door panel 20, reduce the risk of accidental falling or damage, and make the installation and disassembly of the door panel 20 simpler and safer.

[0162] Using the lifting lug 27, the door panel 20 can be easily suspended or moved into place, which facilitates the transportation of the door panel 20. The door panel 20 can be easily loaded and unloaded using lifting equipment, reducing the need for manual operation and improving transportation efficiency.

[0163] When maintenance or repair is required, the lug 27 can be used to temporarily suspend the door panel 20, making it easier for technicians to access the interior of the energy storage device 200.

[0164] In one possible implementation, the lifting lug 27 is located on the side of the door frame 21 away from the bottom beam frame 11.

[0165] The lifting lug 27 is installed on the door frame 21, which improves the connection strength of the lifting lug 27 and thus prevents damage from affecting the lifting operation.

[0166] In one possible implementation, a hanging lug 27 is provided at the front, middle and rear of the left door panel 24 and the right door panel 25, respectively.

[0167] The energy storage device housing 100 provided in this application embodiment includes a base 10, a door panel 20, and a top plate 30. The base 10 includes a bottom beam frame 11 and a reinforcing beam 12. The bottom beam frame 11 includes a horizontal beam 111 and a vertical beam 112 connected end to end. The reinforcing beam 12 connects the horizontal beam 111 and / or the vertical beam 112 that are arranged opposite to each other. The cross-sectional shape of the horizontal beam 111 and / or the vertical beam 112 along its extension direction is I-shaped. The door panel 20 is connected to the bottom beam frame 11, and the door panel 20 and the base 10 form a receiving space for accommodating the battery module 201. The top plate 30 is connected to the door panel 20 to close the receiving space.

[0168] By setting a bottom beam frame 11 and reinforcing beams 12 on the base 10, the bottom beam frame 11 is formed by connecting the end of the bottom beam frame 111 with the longitudinal beams 112, and the reinforcing beams 12 connect the oppositely arranged horizontal beams 111 and / or longitudinal beams 112. The setting of the reinforcing beams 12 can improve the load distribution, thereby resisting multi-directional bending deformation and reducing stress concentration on the bottom beam frame 11, thus providing a good strengthening effect for the entire base 10. By using I-shaped horizontal beams 111 and / or longitudinal beams 112, compared with the traditional square steel tube structure, better bending resistance can be provided, giving it a stronger load-bearing capacity in the vertical direction and effectively resisting bending moments, thereby accommodating more batteries. At the same time, the lightweight design of the I-beam structure can reduce the use of materials while ensuring sufficient structural strength to the bottom beam frame 11, thereby reducing the overall structural weight, increasing the area energy density of the energy storage device shell 100, and saving material costs.

[0169] In addition, this application embodiment also provides an energy storage device 200, including a plurality of battery modules 201 and the aforementioned energy storage device housing 100, wherein the plurality of battery modules 201 are disposed on the base 10.

[0170] Given that the energy storage device 200 in this embodiment includes the energy storage device housing 100 described in any of the above embodiments, the structure and beneficial effects of the energy storage device housing 100 will not be elaborated further in this embodiment.

[0171] In one possible implementation, the energy storage device 200 can be an energy storage container used on the grid side, an energy storage cabinet for commercial and industrial use, or a household energy storage device, without specific limitations.

[0172] like Figure 3 As shown, in one possible implementation, the energy storage device 200 further includes a fixing block 202, which connects the bottom beam frame 11 to an adjacent battery module 201 or two adjacent battery modules 201 along the height direction.

[0173] By using the fixing block 202, the dimensional chain involved in the assembly process is significantly simplified, allowing engineers to more easily perform dimensional and tolerance analysis during the design and manufacturing phases, thereby reducing design complexity. The use of fixing block 202 reduces the accumulation of tolerances between components during assembly, helping to ensure the accuracy and consistency of the final assembly and improving the reliability and performance of the overall system. Due to the reduced tolerance accumulation, installation tolerances become easier to manage, allowing for better control and adjustment of the position and alignment of components during actual assembly, thus improving assembly quality. The reduction in tolerance accumulation and the simplification of dimensional chain analysis directly lead to improved machining accuracy, resulting in tighter fits between components and reducing wear and failures caused by mismatches.

[0174] The fixing block 202 provides a stable connection point, enhancing the stability and strength of the entire structure. When battery modules 201 are assembled together, the fixing block 202 transfers the stacking pressure of the battery modules 201 to itself for bearing and conduction, effectively protecting the battery modules 201 and preventing damage or performance degradation caused by excessive stacking pressure.

[0175] In one possible implementation, the fixing block 202 connects the load-bearing portion of the crossbeam 111 and / or the longitudinal beam 112 to the adjacent battery module 201.

[0176] In one possible implementation, the fixing block 202 connects the crossbeam 111 and / or the longitudinal beam 112 of the I-beam structure to the adjacent battery module 201.

[0177] In one possible implementation, the fixing block 202 is installed between the restraint strips of the two battery modules 201.

[0178] like Figure 5 As shown, in one possible implementation, in order to provide electrical energy to electrical equipment or other devices, multiple energy storage devices 200 need to be used together. Therefore, a device for power distribution and combination needs to be installed in one of the energy storage devices 200 to combine the power of multiple energy storage devices 200. In this case, the size of the energy storage device 200 with the power distribution and combination cabinet installed will be larger than that of the other energy storage devices 200.

[0179] like Figure 6 As shown, during transportation, multiple energy storage devices 200 used in conjunction with each other need to be transported together.

[0180] In one possible implementation, two energy storage devices 200 are used in conjunction.

[0181] One energy storage unit 200 is equipped with a power distribution switch, measuring 1930mm × 2860mm × 2896mm, while the other energy storage unit 200 measures 1730mm × 2860mm × 2896mm. The total container dimensions are (1930mm + 1730mm) × 2860mm × 2896mm, while the dimensions of a standard 20-foot open-top container are 6058mm × 2438mm × 2896mm. Therefore, the two energy storage units 200 cannot be arranged in the container according to their operational configuration, as 2860mm > 2438mm, exceeding the transport limits of a standard 20-foot container.

[0182] At this point, the two energy storage devices 200 need to be flipped so that their length is aligned with the width of the open-top container (1930mm, 1730mm < 2438mm), and their width is aligned with the length of the open-top container (2860mm × 2 < 6058mm). After flipping, the two energy storage devices 200 can be placed side-by-side inside the open-top container, meeting the transportation requirements of standard containers.

[0183] The above-mentioned modular transport solution, which involves splitting the container and flipping it over, can transport non-standard energy storage devices 200, which are up to 2438mm x 2 and up to 6058mm x 2. This solves the problem of transport difficulties caused by non-standard containers exceeding the width of standard containers.

[0184] Furthermore, if two independent energy storage devices 200 are placed inside the open-top container first, and then hoisted together to the ship's hold, there would be a problem of overloading the crane. Therefore, this application adopts a hoisting sequence of first hoisting the open-top container to the ship's hold, and then placing the two independent single-cabinet units in sequence.

[0185] The specific transportation steps are as follows:

[0186] S1: Transport the two separate individual containers to the port using trucks or other logistics vehicles;

[0187] S2: Hoist the standard 20-foot open-top container into the ship's hold and install and secure it;

[0188] S3: The two independent single cabinets are hoisted into the predetermined standard 20-foot open top box by means of top hoisting and then tied and fixed.

[0189] S4: After arriving at the destination port, use the spreader again to unload the two disassembled individual containers from the open top container to the designated area in sequence;

[0190] S5: Use a truck or other logistics vehicle to transport the two separate containers to the destination terminal.

[0191] The splicing and transportation method of the aforementioned energy storage device 200 can effectively solve the problems of overweight battery cells that cannot be forked into the cabinet and the problem of non-standard cabinets being oversized and overweight during overseas transportation.

[0192] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of this application, and are not intended to limit them. Although this application has been described in detail with reference to the foregoing embodiments, those skilled in the art should understand that modifications can still be made to the technical solutions described in the foregoing embodiments, or equivalent substitutions can be made to some or all of the technical features therein. Such modifications or substitutions do not cause the essence of the corresponding technical solutions to deviate from the scope of the technical solutions of the embodiments of this application.

Claims

1. A base, characterized in that, Comprising: A bottom beam frame (11), the bottom beam frame (11) comprising a cross beam (111) and a longitudinal beam (112), the cross beam (111) and the longitudinal beam (112) being connected; In the cross-section of the cross beam (111) in its extending direction, comprising a first connecting portion and a first bearing portion connected to each other; and / or In the cross-section of the longitudinal beam (112) in its extending direction, comprising a second connecting portion and a second bearing portion connected to each other.

2. The base according to claim 1, characterized in that, The first connecting portion connects at least two of the first bearing portions, and at least two of the first bearing portions are arranged at intervals along the height direction of the first bearing portion; and / or The second connecting portion connects at least two of the second bearing portions, and at least two of the second bearing portions are arranged at intervals along the height direction of the second bearing portion.

3. The base according to claim 2, characterized in that, The cross-section shape of at least one of the cross beam (111) and the longitudinal beam (112) in its extending direction includes at least one of an I-shape, a C-shape, a II-shape, and a king-shape.

4. The base according to any one of claims 1-3, characterized in that, The cross beam (111) comprises a first cross beam (113) and a second cross beam (114), the first cross beam (113) and the second cross beam (114) being arranged at intervals along a first direction.

5. The base according to claim 4, characterized in that, The longitudinal beam (112) comprises a first longitudinal beam (115) and a second longitudinal beam (116), the first longitudinal beam (115) and the second longitudinal beam (116) being arranged at intervals along a second direction; The first longitudinal beam (115) connects the first cross beam (113) and the second cross beam (114) at one end along the second direction; the second longitudinal beam (116) connects the first cross beam (113) and the second cross beam (114) at the other end along the second direction.

6. The base according to any one of claims 1-5, characterized in that, Further comprising a reinforcing beam (12), connected to the inner side of the frame of the bottom beam frame (11).

7. The base according to claim 6, characterized in that, The reinforcing beam (12) comprises at least one reinforcing cross beam (121) and / or at least one reinforcing longitudinal beam (122).

8. The base according to claim 7, characterized in that, The reinforcing cross beam (121) comprises a first reinforcing cross beam (123) and a second reinforcing cross beam (124); the first reinforcing cross beam (123) and the second reinforcing cross beam (124) are arranged at intervals along the first direction, and along the second direction, the first reinforcing cross beam (123) and the second reinforcing cross beam (124) are respectively connected to the longitudinal beam (112).

9. The base according to claim 8, characterized in that, The reinforcing longitudinal beam (122) comprises a first reinforcing longitudinal beam (125) and a second reinforcing longitudinal beam (126); the first reinforcing longitudinal beam (125) and the second reinforcing longitudinal beam (126) are arranged at intervals along the second direction, and along the first direction, the first reinforcing longitudinal beam (125) and the second reinforcing longitudinal beam (126) are respectively connected to the cross beam (111), the first reinforcing cross beam (123) and the second reinforcing cross beam (124).

10. The base according to any one of claims 7-9, characterized in that, The shape of the reinforcing beam (12) includes at least one of a cross shape, a gong shape, a feng shape, and a well shape.

11. The base according to any one of claims 7-10, characterized in that, Further comprising a reinforcing rib (13), the two ends of the reinforcing rib (13) being respectively connected to the cross beam (111) and the reinforcing longitudinal beam (122).

12. The base according to claim 11, characterized in that, The reinforcing rib (13) and the cross beam (111) and the reinforcing longitudinal beam (122) form a triangular structure.

13. The base according to any one of claims 7-10, characterized in that, It also includes a reinforcing rib (13), the two ends of which are connected to the longitudinal beam (112) and the reinforcing crossbeam (121), respectively.

14. The base according to claim 13, characterized in that, The reinforcing rib (13) forms a triangular structure with the longitudinal beam (112) and the reinforcing crossbeam (121).

15. The base according to any one of claims 7-10, characterized in that, It also includes a reinforcing rib (13), the two ends of which are connected to the reinforcing longitudinal beam (122) and the reinforcing transverse beam (121), respectively.

16. The base according to claim 15, characterized in that, The reinforcing rib (13) forms a triangular structure with the reinforcing longitudinal beam (122) and the reinforcing transverse beam (121).

17. The base according to any one of claims 1-10, characterized in that, It also includes a reinforcing rib (13), the two ends of which are connected to the crossbeam (111) and the longitudinal beam (112), respectively.

18. The base according to claim 17, characterized in that, The reinforcing rib (13) forms a triangular structure with the crossbeam (111) and the longitudinal beam (112).

19. The base according to any one of claims 1-18, characterized in that, The base is used to support the battery assembly.

20. The base according to claim 19, characterized in that, Along the first direction, the size of the base is L1, and along the second direction, the size of the base is L2. L1 and L2 satisfy: 500mm≤L1≤6000mm, 500mm≤L2≤6000mm.

21. The base according to claim 19, characterized in that, The base supports the battery module with an area energy density of W, where W satisfies: 400Wh / m² 2 ≤W≤600Wh / m 2 .

22. A housing for an energy storage device, characterized in that, Includes the base (10) as described in any one of claims 1-21.

23. The energy storage device housing according to claim 22, characterized in that, It also includes a door panel (20), which is connected to the bottom beam frame (11), and the door panel (20) and the base (10) form a receiving space for accommodating the battery module (201).

24. The energy storage device housing according to claim 23, characterized in that, The door panel (20) includes a door frame (21), which is connected to the bottom beam frame (11).

25. The energy storage device housing according to claim 24, characterized in that, The door panel (20) also includes a skin (22) which is connected to the door frame (21).

26. The energy storage device housing according to claim 25, characterized in that, The skin (22) is welded to the door frame (21).

27. The energy storage device housing according to any one of claims 24-26, characterized in that, The door panel (20) is detachably connected to the bottom beam frame (11).

28. The energy storage device housing according to claim 27, characterized in that, The door panel (20) is connected to the bottom beam frame (11) by bolts.

29. The energy storage device housing according to any one of claims 24-28, characterized in that, It also includes a top plate (30) connected to the door panel (20) to enclose the accommodating space.

30. The energy storage device housing according to claim 29, characterized in that, The door panel (20) and the top panel (30) are detachably connected.

31. The energy storage device housing according to claim 30, characterized in that, The door panel (20) and the top panel (30) are connected by bolts.

32. The energy storage device housing according to any one of claims 24-31, characterized in that, The door panel (20) includes a front door panel (23), a rear door panel (24), a left door panel (25), and a right door panel (26). The front door panel (23) is connected to one side of the left door panel (25) and the right door panel (26), and the rear door panel (24) is connected to the other side of the left door panel (25) and the right door panel (26).

33. The energy storage device housing according to claim 32, characterized in that, The front door panel (23) is detachably connected to the left door panel (25) and the right door panel (26), and / or the rear door panel (24) is detachably connected to the left door panel (25) and the right door panel (26).

34. The energy storage device housing according to any one of claims 24-33, characterized in that, The door panel (20) is provided with a lifting lug (27) on the side away from the bottom beam frame (11).

35. The energy storage device housing according to claim 34, characterized in that, The lifting lug (27) is located on the side of the door frame (21) away from the bottom beam frame (11).

36. An energy storage device, characterized in that, It includes a plurality of battery modules (201) and an energy storage device housing (100) as described in any one of claims 22-35, wherein the plurality of battery modules (201) are disposed on the base (10).

37. The energy storage device according to claim 36, characterized in that, The energy storage device (200) also includes a fixing block (202), which connects the bottom beam frame (11) to the adjacent battery module (201) or two adjacent battery modules (201) along the height direction.

38. The energy storage device according to claim 37, characterized in that, The fixing block (202) connects the bearing portion of the crossbeam (111) and / or the longitudinal beam (112) to the adjacent battery module (201).

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