Energy storage cabinet and energy storage device thereof

Abstract

The invention discloses an energy storage cabinet and an energy storage device thereof.The energy storage cabinet comprises a top seat, a base, a plurality of first bearing beams and a plurality of reinforcing beams, each first bearing beam comprises a first base body, a second base body and a first supporting part, the first base bodies are connected with the top seat and the base in the first direction, and a first containing channel is formed in each first base body in the first direction; the first base body is used for supporting the battery pack, the second base body is arranged in the first containing channel and connected with the two opposite inner walls of the first containing channel, the first supporting part is arranged in the containing channel and connected with the first base body and the second base body, and the multiple reinforcing beams are arranged at intervals in the first direction. The two ends of the reinforcing beams are connected with the adjacent first bearing beams correspondingly. The energy storage cabinet and the energy storage device thereof solve the technical problem that the energy storage cabinet for assembling the sodium ion battery pack is easy to deform due to inertia in the transportation process.

Description

Technical Field

[0001] The present invention relates to the technical field of batteries, and in particular to an energy storage cabinet and its energy storage device. Background Art

[0002] As an important part of the energy storage system, the energy storage cabinet is mainly used to store and protect energy storage batteries. However, currently, the energy storage cabinets commonly used in the market are designed for lithium-ion batteries, while those for sodium-ion batteries are relatively few. Compared with lithium-ion battery packs, sodium-ion battery packs have a larger volume and a heavier weight. Therefore, when assembling a sodium-ion battery pack in an energy storage cabinet suitable for lithium-ion batteries, deformation may occur due to strength and structural problems. Especially during the transportation of the energy storage cabinet, when the energy storage cabinet is fixed on a transport vehicle, the speed change of the transport vehicle will generate a large inertial force. If the structural strength of the energy storage cabinet is insufficient to effectively resist these inertial forces, deformation of the energy storage cabinet may occur. The deformation of the energy storage cabinet not only damages its internal structure but may also cause extrusion of the battery pack, thereby leading to battery damage or other safety hazards. Therefore, how to design an energy storage cabinet with sufficient strength and stability to withstand inertial forces and avoid deformation during transportation has become an urgent technical problem to be solved. Summary of the Invention

[0003] An object of the present invention is to provide an energy storage cabinet and its energy storage device, aiming to solve the technical problem that the energy storage cabinet for assembling a sodium-ion battery pack is prone to deformation due to inertia during transportation.

[0004] To achieve the above object, a solution provided by the present invention is: an energy storage cabinet, comprising: a top seat, a bottom seat, a plurality of first load-bearing beams, and a plurality of reinforcing beams. The first load-bearing beam includes a first base body, a second base body, and a first support portion. The first base body is connected to the top seat and the bottom seat respectively along a first direction. The first base body forms a first accommodation channel along the first direction. The first base body is used to support the battery pack. The second base body is disposed in the first accommodation channel and is connected to the opposite inner walls of the first accommodation channel. The first support portion is disposed in the accommodation channel and is connected to the first base body and the second base body respectively. The plurality of reinforcing beams are arranged at intervals along the first direction, and both ends of the reinforcing beam are respectively connected to adjacent first load-bearing beams.

[0005] Optionally, the first base body includes a first assembly portion, a first connection portion, and a first installation portion. The first assembly portion is used to support the battery pack. The first connection portion is disposed at opposite ends of the first assembly portion. The first installation portion is disposed at an end of the first connection portion away from the first assembly portion. The first assembly portion and the first connection portion enclose to form the first accommodation channel;

[0006] The second base body includes a first reinforcing portion and a second connecting portion. The second connecting portions are respectively arranged at opposite ends of the first reinforcing portion, and the first reinforcing portion is connected to the first connecting portion through the second connecting portion.

[0007] Optionally, the second base body extends along a first direction and is a continuous structure. There are multiple first supporting portions, and the multiple first supporting portions are arranged at intervals along the first direction.

[0008] Optionally, in the first direction, the distance between adjacent reinforcing beams is D1, and the length of the first load-bearing beam is D2, where 0.16 ≤ D1 / D2 ≤ 0.21.

[0009] Optionally, the base includes multiple second load-bearing beams and third load-bearing beams. The multiple second load-bearing beams are sequentially connected end to end. Both ends of the third load-bearing beam are respectively connected to opposite second load-bearing beams, and the first load-bearing beam is respectively connected to the second load-bearing beam and the third load-bearing beam;

[0010] The second load-bearing beam includes a third base body, a second supporting portion, and a second reinforcing portion. The third base body is formed with a second accommodation channel along its length direction. The second reinforcing portion is arranged in the second accommodation channel and is connected to two adjacent inner walls of the second accommodation channel. The second supporting portion is arranged on the side of the second reinforcing portion away from the top seat and is located in the second accommodation channel. The second supporting portion is respectively connected to the third base body and the second reinforcing portion.

[0011] Optionally, the third load-bearing beam is provided with a perforation, and the end of the first load-bearing beam is inserted into the perforation.

[0012] Optionally, the energy storage cabinet includes a first fitting, and the first fitting is connected to an adjacent first load-bearing beam. The first fitting is used for assembling electrical equipment;

[0013] The first fitting includes a first part, multiple second parts, and multiple third parts. The first part and the multiple second parts are sequentially bent and connected. The multiple third parts are respectively arranged at both ends of the second parts. The multiple second parts and the multiple third parts enclose a first assembly groove and a first operation opening communicating with the first assembly groove.

[0014] Optionally, the second part is provided with a relief hole, and the relief hole communicates with the first assembly groove. The relief hole is used for passing a wire harness.

[0015] Optionally, the energy storage cabinet includes a second fitting, and the second fitting is connected to an adjacent first load-bearing beam. The fitting is used for assembling electrical equipment;

[0016] The second fitting includes multiple fourth parts, multiple fifth parts, and multiple sixth parts. The multiple fourth parts and the multiple fifth parts are sequentially bent and connected. The multiple sixth parts are respectively arranged at both ends of the fifth parts. The multiple fifth parts and the multiple sixth parts jointly enclose a second assembly groove and a second operation opening communicating with the second assembly groove.

[0017] To achieve the above object, a solution provided by the present invention is: an energy storage device, including a plurality of battery packs and an energy storage cabinet, and the battery packs are assembled to the energy storage cabinet through a first load-bearing beam.

[0018] The beneficial effects of the present invention are as follows:

[0019] The energy storage cabinet and its energy storage device include a plurality of battery packs and an energy storage cabinet, and the battery packs are assembled in the energy storage cabinet. For the convenience of showing the first load-bearing beam, the battery packs are not shown in the drawings.

[0020] Specifically, the energy storage cabinet includes: a top seat, a bottom seat, a plurality of first load-bearing beams and a plurality of reinforcing beams. The first load-bearing beam includes a first base body, a second base body and a first supporting part. The first base body is respectively connected to the top seat and the bottom seat along a first direction. The first base body is formed with a first accommodating channel along the first direction, and the first base body is used to support the battery pack. The second base body is arranged in the first accommodating channel and is connected to the opposite inner walls of the first accommodating channel. The first supporting part is arranged in the accommodating channel and is respectively connected to the first base body and the second base body. The plurality of reinforcing beams are arranged at intervals along the first direction, and both ends of the reinforcing beam are respectively connected to adjacent first load-bearing beams.

[0021] When the first load-bearing beam faces external forces from a second direction and a third direction, through the cooperation with the first supporting part and the second base body, it can effectively share and absorb the external forces, prevent the energy storage cabinet from deforming or being damaged, thereby improving the stability and structural strength of the energy storage cabinet under the action of multi-directional forces, and ensuring that the energy storage cabinet can safely and reliably protect the internal battery packs during transportation. Description of the Drawings

[0022] In order to more clearly illustrate the technical solutions in the embodiments of the present invention or the prior art, the following will briefly introduce the drawings required for use in the description of the embodiments or the prior art. Obviously, the following drawings are only some embodiments of the present invention. For those of ordinary skill in the art, without creative efforts, other drawings can also be obtained according to the structures shown in these drawings.

[0023] Figure 1 It is a schematic structural diagram provided by an embodiment of the present invention for showing the energy storage cabinet;

[0024] Figure 2 It is a side view of the energy storage cabinet provided by an embodiment of the present invention;

[0025] Figure 3 It is a schematic structural diagram provided by an embodiment of the present invention for showing the first load-bearing beam;

[0026] Figure 4 It is a schematic structural diagram provided by an embodiment of the present invention for showing the first load-bearing beam;

[0027] Figure 5 is the cross-sectional structure schematic diagram at A-A in Figure 4 ;

[0028] Figure 6 is the exploded structure schematic diagram for showing the first load-bearing beam provided by the embodiment of the present invention;

[0029] Figure 7 is the structure schematic diagram for showing the second load-bearing beam provided by the embodiment of the present invention;

[0030] Figure 8 is the structure schematic diagram for showing the second load-bearing beam provided by the embodiment of the present invention;

[0031] Figure 9 is the overall schematic diagram for showing the setting positions of the first fitting and the second fitting provided by the embodiment of the present invention;

[0032] Figure 10 is provided by the embodiment of the present invention Figure 8 the partial enlarged schematic diagram of area B in

[0033] Figure 11 is the structure schematic diagram for showing the first fitting provided by the embodiment of the present invention;

[0034] Figure 12 is the structure schematic diagram for showing the first assembly groove provided by the embodiment of the present invention;

[0035] Figure 13 is the structure schematic diagram for showing the second fitting provided by the embodiment of the present invention.

[0036] Explanation of the reference numerals in the drawings:

[0037] 20, top seat; 30, base; 31, second load-bearing beam; 311, third matrix; 3111, second accommodation channel; 312, second support portion; 313, second strengthening portion; 32, third load-bearing beam; 321, perforation; 40, first load-bearing beam; 41, first matrix; 411, first accommodation channel; 412, first assembly portion; 413, first connection portion; 414, first installation portion; 42, second matrix; 421, first strengthening portion; 422, second connection portion; 43, first support portion; 50, reinforcement beam; 60, first fitting; 61, first part; 62, second part; 621, relief hole; 63, third part; 64, first assembly groove; 65, first operation port; 70, second fitting; 71, fourth part; 72, fifth part; 73, sixth part; 74, second assembly groove; 75, second operation port; 80, first direction; 90, second direction; 100, third direction. Detailed implementation manners

[0038] The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only a part of the embodiments of the present invention, rather than all the embodiments. All other embodiments obtained by those of ordinary skill in the art based on the embodiments of the present invention without creative efforts shall fall within the protection scope of the present invention.

[0039] Please refer to Figures 1 to 6 as shown in Figure 1 which is a schematic structural diagram of an energy storage cabinet provided by an embodiment of the present invention, Figure 2 which is a side view of the energy storage cabinet provided by an embodiment of the present invention, Figure 3 which is a partial structural schematic diagram of a first load-bearing beam provided by an embodiment of the present invention, Figure 4 which is a partial structural schematic diagram of a first load-bearing beam provided by an embodiment of the present invention, Figure 5 which is provided by an embodiment of the present invention Figure 4 and is a sectional structural schematic diagram at A-A in Figure 6 which is an exploded structural schematic diagram of a first load-bearing beam provided by an embodiment of the present invention.

[0040] An embodiment of the present invention provides an energy storage device, which includes a plurality of battery packs and an energy storage cabinet. The battery packs are assembled in the energy storage cabinet. For the convenience of showing the first load-bearing beam 40, the battery packs are not shown in the drawings.

[0041] Specifically, the energy storage cabinet includes: a top seat 20, a bottom seat 30, a plurality of first load-bearing beams 40, and a plurality of reinforcing beams 50. The first load-bearing beam 40 includes a first base body 41, a second base body 42, and a first support portion 43. The first base body 41 is respectively connected to the top seat 20 and the bottom seat 30 along a first direction 80. The first base body 41 is formed with a first accommodation channel 411 along the first direction 80. The first base body 41 is used to support the battery packs. The second base body 42 is disposed in the first accommodation channel 411 and is connected to the opposite inner walls of the first accommodation channel 411. The first support portion 43 is disposed in the accommodation channel and is respectively connected to the first base body 41 and the second base body 42. The plurality of reinforcing beams 50 are arranged at intervals along the first direction 80, and both ends of the reinforcing beam 50 are respectively connected to adjacent first load-bearing beams 40. The first direction 80 is the height direction of the energy storage cabinet, the second direction 90 is the depth direction of the energy storage cabinet. Along the depth direction of the energy storage cabinet, the cabinet body of the battery cabinet is provided with two opposite openings, and doors for closing the internal space of the energy storage cabinet are respectively installed at the openings (the doors are not shown in the drawings). The third direction 100 is the width direction of the energy storage cabinet, and the skin of the energy storage cabinet is disposed at intervals along the third direction 100 on the first load-bearing beam 40.

[0042] In practical applications, during the transportation of the energy storage cabinet, the operator fixes it on the transport vehicle, making the first direction 80 perpendicular to the moving direction. When the speed of the transport vehicle changes, the energy storage cabinet will be subjected to a large inertial force. If the strength of the energy storage cabinet is insufficient, it may deform, and then the battery pack will be squeezed and damaged. Through the cooperative design of the first load-bearing beam 40, the top seat 20, the base 30, and the reinforcement beam 50, the energy storage cabinet can withstand most of the inertial force, avoid deformation, and ensure the integrity of the battery pack.

[0043] Multiple first load-bearing beams 40 are interconnected through the reinforcement beam 50, further enhancing the overall structural strength of the energy storage cabinet. When the energy storage cabinet is subjected to a force from the second direction 90, the first load-bearing beam 40 bears the horizontal thrust, and the first support portion 43 and the second base body 42 inside the energy storage cabinet act together to support the opposite side walls of the first accommodation channel 411, preventing the first load-bearing beam 40 from undergoing excessive deformation or bending. The connection of the first support portion 43 to the second base body 42 helps to share the external force in the second direction 90, ensuring that the first load-bearing beam 40 does not undergo permanent deformation and maintaining the overall structural stability of the energy storage cabinet. When the energy storage cabinet is subjected to a force from the third direction 100, the first load-bearing beam 40 is subjected to tensile or compressive forces in this direction. At this time, the connection structure between the first base body 41 and the second base body 42 and the supporting effect of the first support portion 43 become crucial. The first support portion 43, through its connection with the first base body 41 and the second base body 42, plays a supporting role, preventing the first load-bearing beam 40 from breaking or undergoing excessive bending, and further enhancing the stability of the energy storage cabinet under the action of longitudinal forces. The supporting force of the first load-bearing beam 40 in the third direction 100 helps to maintain the structural integrity of the energy storage cabinet, ensuring that it can effectively withstand the impact force and inertial force during transportation.

[0044] In summary, the first load-bearing beam 40 not only connects the top seat 20 and the base 30 into a whole, but also can enhance the structural strength of the energy storage cabinet and improve its stability. When facing external forces from the second direction 90 and the third direction 100, the first load-bearing beam 40, through its cooperation with the first support portion 43 and the second base body 42, can effectively share and absorb the external forces, prevent the energy storage cabinet from deforming or being damaged, thereby improving the stability and structural strength of the energy storage cabinet under the action of multi-directional forces, and ensuring that the energy storage cabinet can safely and reliably protect the internal battery pack during transportation.

[0045] In one embodiment, refer to Figure 3 、 Figure 4 、 Figure 5 and Figure 6, the first base body 41 includes a first assembly portion 412, a first connection portion 413, and a first installation portion 414. The first assembly portion 412 is used to support the battery pack. There are two first connection portions 413, and the two first connection portions 413 are respectively arranged at opposite ends of the first assembly portion 412. The first connection portion 413 forms an angle with the first assembly portion 412. The first installation portion 414 is connected to one end of the first connection portion 413 away from the first assembly portion 412, and the first installation portion 414 forms an angle with the first assembly portion 412. The first installation portion 414 is used to install the skin of the energy storage cabinet. The first assembly portion 412 and the first connection portion 413 enclose a first accommodation channel 411. The second base body 42 includes a first strengthening portion 421 and a second connection portion 422. There are two second connection portions 422, and the two second connection portions 422 are respectively arranged at opposite ends of the first strengthening portion 421. The second connection portion 422 forms an angle with the first strengthening portion 421. The first strengthening portion 421 is welded and connected to the first connection portion 413 through the second connection portion 422. The first support portion 43 is welded and connected to the second connection portion 422, the first assembly portion 412, and the first connection portion 413 simultaneously.

[0046] In practical applications, when the first load-bearing beam 40 is subjected to a force in the second direction 90, the first connection portion 413, the second connection portion 422, and the first support portion 43 play a major role in enhancing the structural strength in the second direction 90, ensuring that the energy storage cabinet is not prone to structural deformation and effectively transmitting the external force to the entire frame, thereby improving the compressive resistance of the energy storage cabinet. The first connection portion 413 and the second connection portion 422 can disperse the external force applied along the second direction 90 by increasing the contact area, ensuring the stability of the energy storage cabinet. When the first load-bearing beam 40 receives a force in the third direction 100, the first connection portion 413, the first support portion 43, and the second connection portion 422 play a major role in enhancing the structural strength, can effectively support the energy storage cabinet frame, and reduce the situation where the first load-bearing beam 40 bends or breaks. The first connection portion 413 and the second connection portion 422 increase the connection strength by enlarging the connection surface.

[0047] In one embodiment, refer to Figure 5 and Figure 6 , the second base body 42 extends along the first direction 80 and is a continuous structure. There are multiple first support portions 43, and the multiple first support portions 43 are arranged at intervals along the first direction 80.

[0048] In practical applications, when the first load-bearing beam 40 is subjected to external force, the multiple support parts are arranged at intervals, and the first support part 43 can provide support in different areas, which plays a role in sharing pressure, avoiding excessive stress or local deformation of a single support point, and at the same time improving the impact resistance of the energy storage cabinet and enhancing the overall stability. While the first load-bearing beam 40 forms the first accommodating channel 411 to reduce weight, the multiple support parts are arranged at intervals to compensate for the strength loss of the first load-bearing beam 40 caused by forming the first accommodating channel 411, and connect the first base 41 and the second base 42 into a whole.

[0049] In one embodiment, see Figure 2 In the first direction 80, the spacing between adjacent reinforcement beams 50 is D1, the length of the first load-bearing beam 40 is D2, and 0.16≤D1 / D2≤0.21.

[0050] In practical applications, if the spacing of the reinforcement beams 50 is too large, it will lead to uneven force distribution, unable to effectively disperse the load, and may cause local stress concentration. If the spacing is too small, it may lead to an overly complex structure, adding unnecessary weight and cost. Therefore, a reasonable spacing setting can ensure that the reinforcement beams 50 can fully play their role without affecting the lightweight design of the structure.

[0051] In one embodiment, see Figure 1 , Figure 7 and Figure 8 The base 30 includes a plurality of second load-bearing beams 31 and a third load-bearing beam 32. The plurality of second load-bearing beams 31 are connected to each other end to end in sequence. Both ends of the third load-bearing beam are respectively connected to the opposite second load-bearing beams 31. The first load-bearing beam 40 is respectively connected to the second load-bearing beam 31 and the third load-bearing beam 32. The second load-bearing beam 31 includes a third base 311, a second supporting portion 312 and a second reinforcing portion 313. The third base 311 is formed with a second accommodating channel 3111 along its length direction. The second reinforcing portion 313 is arranged in the second accommodating channel 3111 and is connected to two adjacent inner walls of the second accommodating channel 3111. The second supporting portion 312 is arranged on a side of the second reinforcing portion 313 away from the top seat 20 and is located in the second accommodating channel 3111. The second supporting portion 312 is respectively connected to the third base 311 and the second reinforcing portion 313.

[0052] In practical applications, a second receiving channel 3111 is provided along the length direction of the third base body 311 of the second load-bearing beam 31. This design not only reduces the weight of the energy storage cabinet but also maintains the structural stability. The design of the second receiving channel 3111 also increases the space for internal components, allowing for the accommodation of more strengthening components or the implementation of other functions. The second strengthening portion 313 is disposed in the second receiving channel 3111 and is connected to two adjacent inner walls of the channel, further enhancing the support strength of the base 30. The connection between the second support portion 312, the third base body 311, and the second strengthening portion 313 forms a stable support structure that can effectively withstand external forces from all directions of the energy storage cabinet, preventing deformation of the base 30.

[0053] In this embodiment, the second strengthening portion 313 is a sheet metal part formed by multiple bends. Two adjacent side walls of the second strengthening portion 313 are respectively connected to two adjacent inner walls of the second receiving channel 3111.

[0054] Further, referring to Figure 9 and Figure 10 , the third load-bearing beam 32 is provided with a perforation 321, and the end of the first load-bearing beam 40 is inserted into the perforation 321.

[0055] In practical applications, the third load-bearing beam 32 is provided with a hole for a liquid cooling pipeline to pass through. The strength at this part will be weakened due to the presence of the hole. By providing a perforation 321 near the hole and inserting the end of the first load-bearing beam 40 into the perforation 321, the contact area at the connection can be effectively increased. This connection method helps to make up for the strength loss caused by the hole, ensuring that the third load-bearing beam 32 can still bear a large load, thereby maintaining the overall strength and stability of the energy storage cabinet.

[0056] In one embodiment, referring to Figure 11 and Figure 12 , the energy storage cabinet includes a first fitting 60. The first fitting 60 is connected to the adjacent first load-bearing beam 40 and is used for assembling electrical equipment. The first fitting 60 includes a first part 61, a plurality of second parts 62, and a plurality of third parts 63. The first part 61 and the plurality of second parts 62 are sequentially bent and connected. The plurality of third parts 63 are respectively disposed at both ends of the second part 62. The plurality of second parts 62 and the plurality of third parts 63 enclose to form a first assembly groove 64 and a first operation port 65 communicating with the first assembly groove 64.

[0057] In practical applications, one end of the electrical equipment is placed on the first part 61 and connected to the second part 62 through bolts and nuts. The bolts pass through the second part 62 and are partially inserted into the first assembly groove 64, and the nuts are arranged in the first assembly groove 64. This design ensures that the electrical equipment is firmly installed in the energy storage cabinet, avoiding loosening or damage caused by vibration, external force, or long-term use. Through this fastening structure, the electrical equipment can be firmly fixed inside the energy storage cabinet, enhancing the stability and safety of the entire system. During the assembly and maintenance process, operators can insert their hands or tools into the first assembly groove 64 through the first operation port 65 to lock the nuts and bolts. This design effectively solves the problem of limited operating space in the traditional assembly process, enabling assemblers to quickly and efficiently complete operations in a limited space, reducing the operation difficulty caused by the narrow space, and improving work efficiency. The first part 61, the second part 62, and the third part 63 are connected by bending. The design of connecting the third part 63 to multiple second parts 62 helps to improve the integrity of the first assembly 60. When facing external pressure or force, the structures of the first part 61, the second part 62, and the third part 63 can effectively disperse and conduct the action of force, avoiding material damage caused by excessive local stress, thereby extending the service life of the energy storage cabinet and improving its overall reliability.

[0058] In this embodiment, the number of the second parts 62 is three. The three second parts 62 are sequentially connected by bending. The second part 62 at one end is connected to the first part 61, and the second part 62 at the other end is connected to the third part 63. The number of the third parts 63 is two. The two third parts 63 are respectively arranged on both sides of the second part 62 and are bent and connected to the second part 62 at the other end. At the same time, the third part 63 is welded to the adjacent two other second parts 62. The first assembly 60 is connected to the first load-bearing beam 40 through the third part 63.

[0059] Further, referring to Figure 11 and Figure 12 , the second part 62 is provided with a relief hole 621. The relief hole 621 communicates with the first assembly groove 64, and the relief hole 621 is used for passing the wire harness.

[0060] In practical applications, the relief hole 621 opened in the second part 62 communicates with the first assembly groove 64, allowing the wire harness to enter the first assembly groove 64 through the relief hole 621 and exit the first assembly groove 64 through the first operation port 65. Thus, the problem of interference between the wire harness and other components during the assembly process is solved. The wire harness can be arranged along a reasonable path inside the energy storage cabinet without occupying additional space. Operators can conveniently introduce the wire harness through the relief hole 621 to the required area without affecting the installation and fixation of the electrical equipment, avoiding the situation of wire harness entanglement or difficult management, and further improving the assembly efficiency.

[0061] In one embodiment, referring toFigure 13 , the energy storage cabinet includes a second fitting 70. The second fitting 70 is connected to the adjacent first load-bearing beam 40, and the fitting is used for assembling electrical equipment. The second fitting 70 includes a plurality of fourth parts 71, a plurality of fifth parts 72, and a plurality of sixth parts 73. The plurality of fourth parts 71 and the plurality of fifth parts 72 are bent and connected in sequence. The plurality of sixth parts 73 are respectively arranged at both ends of the fifth part 72. The plurality of fifth parts 72 and the plurality of sixth parts 73 jointly enclose a second assembly groove 74 and a second operation opening 75 communicating with the second assembly groove 74.

[0062] In practical applications, the electrical equipment is placed on the fifth part 72 and is connected to the fifth part 72 through bolts and nuts. The nuts are arranged in the second assembly groove 74. The operator reaches into the second assembly groove 74 through the second operation opening 75 with his hand or a tool to lock the nuts and bolts. Each component of the second fitting 70 (including a plurality of fourth parts 71, fifth parts 72, and sixth parts 73) is bent and connected in sequence to form a solid integral structure. The cooperation of the fifth part 72 and the sixth part 73 encloses the second assembly groove 74, further enhancing the integrity of the second fitting 70 and making it more stable when bearing external forces. Such a structure helps to improve the strength of the second fitting 70 and ensure the safety and long-term stable operation of the electrical equipment.

[0063] In this embodiment, the number of the fifth parts 72 is three. The three fifth parts 72 are bent and connected in sequence. The fifth part 72 at one end is bent and connected to the adjacent fourth part 71. The fifth part 72 at the other end is connected to the sixth part 73. The number of the sixth parts 73 is two. The two sixth parts 73 are respectively arranged on both sides of the fifth part 72 and are bent and connected to the fifth part 72 far from the fourth part 71. At the same time, the sixth part 73 is welded to the adjacent two other fifth parts 72. The second fitting 70 is connected to the first load-bearing beam 40 through the sixth part 73.

[0064] It should be noted that all directional indications (such as up, down, left, right, front, back...) in the embodiments of the present invention are only used to explain the relative positional relationship and movement conditions between components in a certain specific posture. If this specific posture changes, the directional indications will also change accordingly.

[0065] It should also be noted that when an element is referred to as "fixed to" or "set on" another element, it can be directly on the other element or there may be an intermediate element at the same time. When an element is referred to as "connected" to another element, it can be directly connected to the other element or can also be indirectly connected to the other element through an intermediate element.

[0066] In addition, the descriptions involving "first", "second", etc. in the present invention are for descriptive purposes only, and should not be construed as indicating or implying their relative importance or implicitly specifying the quantity of the indicated technical features. Thus, the features defined with "first" and "second" may explicitly or implicitly include at least one such feature. In addition, the technical solutions between various embodiments may be combined with each other, but it must be based on the ability of those of ordinary skill in the art to implement. When the combination of technical solutions results in contradictions or cannot be implemented, it should be considered that such a combination of technical solutions does not exist and is not within the scope of protection required by the present invention.

[0067] The above are only the preferred embodiments of the present invention, and do not limit the patent scope of the present invention accordingly. Any equivalent structural transformation made under the inventive concept of the present invention by using the content of the specification and drawings of the present invention, or any direct / indirect application in other related technical fields is included in the patent protection scope of the present invention.

Claims

1. An energy storage cabinet, characterized in that: include: Top seat; Base; A plurality of first load-bearing beams, comprising a first base, a second base and a first support portion, wherein the first base is respectively connected to the top seat and the base along a first direction, the first base is formed with a first accommodating channel along the first direction, the first base is used to support the battery pack, the second base is disposed in the first accommodating channel and connected to two opposite inner walls of the first accommodating channel, the first support portion is disposed in the accommodating channel, and the first support portion is respectively connected to the first base and the second base; A plurality of reinforcing beams are arranged at intervals along the first direction, and two ends of the reinforcing beams are respectively connected to adjacent first load-bearing beams.

2. The energy storage cabinet according to claim 1, characterized in that: The first base includes a first assembly portion, a first connecting portion and a first mounting portion, the first assembly portion is used to support the battery pack, the first connecting portion is arranged at two opposite ends of the first assembly portion, the first mounting portion is arranged at one end of the first connecting portion away from the first assembly portion, and the first assembly portion and the first connecting portion enclose to form the first accommodating channel; The second base includes a first reinforcing portion and a second connecting portion, the second connecting portions are respectively arranged at two opposite ends of the first reinforcing portion, and the first reinforcing portion is connected to the first connecting portion through the second connecting portion.

3. The energy storage cabinet according to claim 1, characterized in that: The second substrate extends along the first direction and is a continuous structure. A plurality of first supporting portions are provided, and the plurality of first supporting portions are spaced apart along the first direction.

4. The energy storage cabinet according to claim 1, characterized in that: In the first direction, the distance between adjacent reinforcement beams is D1, the length of the first load-bearing beam is D2, and 0.16≤D1 / D2≤0.

21.

5. The energy storage cabinet according to claim 1, characterized in that: The base comprises a plurality of second load-bearing beams and a third load-bearing beam, wherein the plurality of second load-bearing beams are connected to each other end to end, the two ends of the third load-bearing beam are respectively connected to the opposite second load-bearing beams, and the first load-bearing beam is respectively connected to the second load-bearing beam and the third load-bearing beam; The second load-bearing beam includes a third base, a second supporting portion and a second reinforcing portion. The third base is formed with a second accommodating channel along its length direction. The second reinforcing portion is arranged in the second accommodating channel and connected to two adjacent inner walls of the second accommodating channel. The second supporting portion is arranged on a side of the second reinforcing portion away from the top seat and is located in the second accommodating channel. The second supporting portion is respectively connected to the third base and the second reinforcing portion.

6. The energy storage cabinet according to claim 5, characterized in that: The third load-bearing beam is provided with a through hole, and the end of the first load-bearing beam is inserted into the through hole.

7. The energy storage cabinet according to claim 1, characterized in that: The energy storage cabinet includes a first assembly part, the first assembly part is connected to the adjacent first load-bearing beam, and the first assembly part is used to assemble electrical equipment; The first assembly part includes a first part, multiple second parts and multiple third parts. The first part and the multiple second parts are bent and connected in sequence. The multiple third parts are respectively arranged at both ends of the second part. The multiple second parts and the multiple third parts are surrounded to form a first assembly groove and a first operating port connected to the first assembly groove.

8. The energy storage cabinet according to claim 7, characterized in that: The second part is provided with a clearance hole, the clearance hole is communicated with the first assembly groove, and the clearance hole is used for passing the wire harness.

9. The energy storage cabinet according to claim 1, characterized in that: The energy storage cabinet includes a second assembly part, the second assembly part is connected to the adjacent first load-bearing beam, and the assembly part is used to assemble electrical equipment; The second assembly part includes multiple fourth parts, multiple fifth parts and multiple sixth parts, the multiple fourth parts and multiple fifth parts are bent and connected in sequence, the multiple sixth parts are respectively arranged at both ends of the fifth part, and the multiple fifth parts and multiple sixth parts are jointly arranged to form the second assembly groove and the second operating port connected to the second assembly groove.

10. An energy storage device, characterized in that: It comprises a plurality of battery packs and an energy storage cabinet according to any one of claims 1 to 9, wherein the battery packs are assembled to the energy storage cabinet via the first load-bearing beam.

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