Connecting assembly, energy storage container and energy storage system

Abstract

The utility model discloses a connecting assembly, an energy storage container and an energy storage system. The connecting assembly comprises a first corner fitting, a second corner fitting and a spring bolt. The limiting part and the locking part of the spring bolt are fixedly connected in the first direction. A protruding part is arranged on the side face of the locking part. The first corner fitting is provided with a first mounting groove and a first lock hole which are communicated with each other. And a second mounting groove and a second lock hole which are communicated with each other are formed in the second corner fitting. The first corner piece and the second corner piece are arranged in a stacked mode in the first direction, and the first lock hole is opposite to the second lock hole. The first corner piece is used for being fixedly connected with a first box body of the energy storage container, and the second corner piece is used for being fixedly connected with a second box body of the energy storage container. And the limiting part is clamped in the second mounting groove. The locking part is clamped in the first installation groove, and the protruding part abuts against the inner wall of the first installation groove. The connecting assembly is applied to the energy storage device, and the technical problem that in the prior art, an energy storage container cannot meet the hoisting requirement, and the transportation cost is increased can be solved.

Description

Technical Field

[0001] The present application relates to the field of energy storage technology, and in particular to a connection assembly, an energy storage container and an energy storage system. Background Art

[0002] Energy storage containers are mainly used in wind, solar, storage and microgrid projects because they are flexible, economical, efficient and safe. With the development of energy storage technology, the energy density of energy storage systems is getting higher and higher. Most energy storage containers in the existing technology are of standard size, and their weight will exceed the upper weight limit of the dock hoisting equipment, which cannot meet the lifting requirements and will increase the transportation cost of energy storage containers. Utility Model Content

[0003] The present application provides a connection assembly, an energy storage container and an energy storage system to solve the technical problem in the prior art that the energy storage container cannot meet the lifting requirements and increases the transportation cost.

[0004] In a first aspect, the present application provides a connection assembly, which is applied to an energy storage container, wherein the energy storage container includes a first box body and a second box body. The connection assembly includes a first corner piece, a second corner piece and a locking tongue. The locking tongue includes a limiting portion and a locking portion, wherein the limiting portion and the locking portion are fixedly connected along a first direction, and a protruding portion is provided on the side of the locking portion, wherein the protruding portion protrudes toward a second direction; the second direction is perpendicular to the first direction. A first mounting groove is provided in the first corner piece, and a first locking hole is provided on the surface of the first corner piece, wherein the first locking hole is connected to the first mounting groove. A second mounting groove is provided in the second corner piece, and a second locking hole is provided on the surface of the second corner piece, wherein the second locking hole is connected to the second mounting groove.

[0005] The first corner piece and the second corner piece are stacked along the first direction, and the first locking hole is opposite to the second locking hole. The first corner piece is used to be fixedly connected to the first box body, and the second corner piece is used to be fixedly connected to the second box body. The connecting assembly includes a locking state, and when the connecting assembly is in the locking state, the limiting portion is clamped in the second mounting groove and abuts against the inner wall of the second mounting groove; the end of the locking portion away from the limiting portion is clamped in the first mounting groove, and the protruding portion abuts against the inner wall of the first mounting groove.

[0006] In a possible implementation, the locking portion is further provided with a limiting groove, and the limiting groove and the protruding portion are arranged in sequence along the first direction; when the connecting assembly is in the locking state, the inner wall of the first locking hole is clamped in the limiting groove.

[0007] In a possible implementation manner, the locking portion includes a supporting body and a clamping body, one side of the supporting body is fixedly connected to the clamping body, and the other side of the supporting body is fixedly connected to the limiting portion. When the connecting assembly is in the locked state, the clamping body is clamped to the first corner piece, and the supporting body is limited between the first corner piece and the second corner piece.

[0008] In a possible implementation, the holding body includes an inclined section and an extension section, and the inclined section is fixedly connected to the support body. The inclined section includes a first surface and a second surface, and the first surface and the second surface are arranged opposite to each other along the second direction. The protruding portion and the limiting groove are both arranged on the first surface, and the extension section is connected to the second surface and extends in a direction away from the second surface, and the extension section is located at an end of the inclined section away from the support body.

[0009] In a possible implementation manner, the second surface includes a first arc surface, the first arc surface and the limiting groove are arranged opposite to each other along the second direction, and the first arc surface is bent toward the limiting groove.

[0010] In a possible implementation, the second surface further includes a second curved surface, the second curved surface is connected to an end of the first curved surface away from the support body, the second curved surface and the protruding portion are arranged opposite to each other along the second direction, and the second curved surface is bent toward the protruding portion.

[0011] In a possible embodiment, the limiting portion includes a first limiting end and a second limiting end, the first limiting end and the second limiting end are arranged relative to each other and are symmetrical about the center line of the limiting portion along the first direction; when the connecting assembly is in the locked state, the first limiting end and the second limiting end abut against the inner wall of the second mounting groove.

[0012] In a possible implementation manner, an angle between a direction from the first limiting end to the second limiting end and a length direction of the support body is greater than 0 degrees and less than 90 degrees.

[0013] In a possible implementation, the connection assembly further includes a bridging portion. The bridging portion is connected between the limiting portion and the support body, and a projection of the bridging portion along the first direction is completely located within the limiting portion. When the connection assembly is in the locked state, the bridging portion is located within the second locking hole.

[0014] In a possible implementation manner, a projection of the support body along the first direction completely covers the bridging portion, and a projection area of ​​the support body along the first direction is larger than a projection area of ​​the bridging portion along the first direction.

[0015] In a possible implementation, the connection assembly further includes an unlocked state. When the connection assembly is in the unlocked state, the limiting portion is unlocked from the second corner piece, and a projection of the limiting portion along the first direction is completely located within the second lock hole.

[0016] In a second aspect, the present application provides an energy storage container, comprising a first box body, a second box body and a connection assembly. The first box body and the second box body are stacked along the first direction. The first corner piece is fixed to a side of the first box body close to the second box body, and the second corner piece is fixed to a side of the second box body close to the first box body.

[0017] In a possible implementation, a first receiving groove is provided on a side of the first box body close to the second box body, a second receiving groove is provided on a side of the second box body close to the first box body, the first corner piece is fixed in the first receiving groove, and the second box body is fixed in the second receiving groove.

[0018] In a possible implementation manner, there are multiple connection components, and the multiple connection components are symmetrically arranged.

[0019] In a possible implementation manner, a third corner piece is provided on a side of the second box body away from the first box body, and the third corner piece is fixedly connected to the second box body.

[0020] In a third aspect, the present application provides an energy storage system, including a first battery, a second battery, and an energy storage container, wherein the first battery is installed in the first box, and the second battery is installed in the second box.

[0021] In summary, in the present application, the first corner piece of the connection assembly provided is fixedly connected to the first box body of the energy storage container, and the second corner piece is fixedly connected to the second box body. In this embodiment, the fixed connection between the locking tongue and the second corner piece can be achieved by providing a limiting portion on the connection assembly, and the fixed connection between the locking tongue and the first corner piece can be achieved by providing a locking portion, thereby achieving the fixed connection between the first corner piece and the second corner piece, and further achieving the fixed connection between the first box body and the second box body.

[0022] In this application, the energy storage container is divided into boxes, so that each box can be hoisted to the cargo ship separately, so that the entire energy storage container can be transferred to the cargo ship, without disassembling the batteries in the energy storage container, and without additional customization of special cargo ships for transportation, thereby reducing transportation costs. In addition, after a single box is transferred to the cargo ship, it can be fixedly connected through a connecting assembly, thereby improving the structural stability of the energy storage container and improving the safety of transportation. BRIEF DESCRIPTION OF THE DRAWINGS

[0023] In order to more clearly illustrate the technical solution of the present application, the drawings required for use in the implementation manner will be briefly introduced below. Obviously, the drawings described below are only some implementation manners of the present application. For ordinary technicians in this field, other drawings can be obtained like these drawings without paying any creative work.

[0024] Figure 1 is a schematic diagram of the structure of the energy storage system provided in the embodiment of the present application;

[0025] Figure 2 yes Figure 1 A partial cross-sectional structural schematic diagram of the energy storage system shown;

[0026] Figure 3 yes Figure 2 A schematic diagram of the structure of the connection components in the energy storage system shown;

[0027] Figure 4 yes Figure 3 A schematic diagram of a partially exploded structure of the connection components shown;

[0028] Figure 5 yes Figure 3 A schematic diagram of the exploded structure of the connection assembly shown at another angle;

[0029] Figure 6 yes Figure 3 An enlarged structural schematic diagram of a locking tongue in the connecting assembly shown;

[0030] Figure 7 yes Figure 3 A schematic cross-sectional structure diagram of the connection assembly shown;

[0031] Figure 8 yes Figure 7 A schematic diagram of the cross-sectional structure of the connecting assembly shown at another angle;

[0032] Fig. 9 yes Figure 7 A schematic cross-sectional view of the connecting assembly in another state;

[0033] Fig.10 yes Fig. 9 A schematic diagram of the cross-sectional structure of the connecting component shown at another angle.

[0034] Description of reference numerals: 500-energy storage system; 510-first energy storage unit; 520-second energy storage unit; 200-energy storage container; 210-first box; 220-second box; 230-first receiving slot; 240-second receiving slot; 100-connection assembly; 10-first corner piece; 20-second corner piece; 30-lock tongue; 11-first top plate; 12-first bottom plate; 13-first side plate; 14-first mounting slot; 15-first lock hole; 16-first through hole; 21-second top plate; 22-second bottom plate; 23-second side plate; 24-second mounting slot; 25- Second locking hole; 26-second through hole; 31-limiting part; 32-bridging part; 33-locking part; 311-first side surface; 312-second side surface; 313-third side surface; 314-fourth side surface; 315-first limiting end; 316-second limiting end; 34-support body; 35-holding body; 351-inclined section; 352-extension section; 353-first surface; 354-second surface; 3541-first arc surface; 3542-third arc surface; 3543-second arc surface; 355-protruding part; 356-limiting groove; 250-third corner piece; 1-gap. DETAILED DESCRIPTION

[0035] The following will be combined with the drawings in the embodiments of the present application to clearly and completely describe the technical solutions in the embodiments of the present application. Obviously, the described embodiments are only part of the embodiments of the present application, not all of the embodiments. Based on the embodiments in the present application, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of this application.

[0036] Since the energy people need is highly temporal and spatial, in order to rationally use energy and improve energy utilization, it is necessary to use a medium or device to store one form of energy in the same form or convert it into another form of energy, and then release it in a specific form based on future application needs. As we all know, in order to achieve the goal of carbon neutrality, the main way to generate green electricity is to develop green energy such as photovoltaics and wind power to replace fossil energy.

[0037] At present, the generation of green electricity generally relies on photovoltaics, wind power, and hydropower, etc. However, wind and solar energy generally have problems of strong intermittency and large volatility, which will cause instability in the power grid, insufficient electricity during peak hours, and too much electricity during valley hours. Unstable voltage will also cause damage to electricity. Therefore, insufficient electricity demand or insufficient grid acceptance capacity may cause the problem of "abandoning wind and solar power". To solve these problems, we must rely on energy storage. That is, converting electrical energy into other forms of energy through physical or chemical means and storing it, and converting energy into electrical energy and releasing it when needed. In simple terms, energy storage is like a large "power bank". When photovoltaic and wind energy are sufficient, electrical energy is stored and the stored electricity is released when needed.

[0038] See also Figure 1 , Figure 1 It is a schematic diagram of the structure of the energy storage system 500 provided in an embodiment of the present application.

[0039] The energy storage system 500 includes an energy storage container 200 and a battery (not shown). The battery is installed in the energy storage container 200. The battery uses chemical elements as energy storage media, and the chemical reaction or change of the energy storage medium accompanies the charging and discharging process. In simple terms, the electric energy generated by wind energy and solar energy is stored in the battery, and when the use of external electric energy reaches a peak, the stored electricity is released for use, or transferred to a place where electricity is scarce for use.

[0040] For ease of description, in this application, the height direction of the energy storage system 500 is defined as the first direction, that is, the Z direction; the width direction of the energy storage system 500 is defined as the second direction, that is, the Y direction; and the length direction of the energy storage system 500 is defined as the third direction, that is, the X direction. The X direction, the Y direction, and the Z direction are perpendicular to each other.

[0041] Combination Figure 2 , Figure 2 yes Figure 1 A partial cross-sectional structural schematic diagram of an energy storage system 500 is shown.

[0042] The energy storage container 200 includes a plurality of boxes. Batteries are installed in each box. In this embodiment, the boxes are rectangular. The length of each box is the same or substantially the same, and the width of each box is the same or substantially the same. The height of each box can be the same or different. The plurality of boxes are stacked in the Z direction, and each adjacent two boxes are fixedly connected.

[0043] In this embodiment, the energy storage container 200 includes two boxes. The two boxes are a first box 210 and a second box 220. The first box 210 and the second box 220 have the same size. That is, the first box 210 and the second box 220 have equal lengths, equal widths, and equal heights. The first box 210 and the second box 220 are stacked along the Z direction and fixedly connected. The battery includes a first battery and a second battery. The first battery is installed in the first box 210 and fixedly connected to the first box 210. The second battery is installed in the second box 220 and fixedly connected to the second box 220.

[0044] Among them, a box body and a battery installed in the box body can be understood as an energy storage unit. The energy storage system 500 includes multiple energy storage units. Multiple energy storage units are stacked along the Z direction, and each two adjacent energy storage units are fixedly connected. In this embodiment, the energy storage system 500 includes a first energy storage unit 510 and a second energy storage unit 520. The first box body 210 and the first battery constitute the first energy storage unit 510, and the second box body 220 and the second battery constitute the second energy storage unit 520.

[0045] Please continue reading Figure 1 and Figure 2 The energy storage container 200 further includes a connection assembly 100. The connection assembly 100 is connected between two adjacent boxes to achieve a fixed connection between the two adjacent boxes. In this embodiment, there are four connection assemblies 100. The four connection assemblies 100 are all fixedly connected between the first box 210 and the second box 220. In addition, the four connection assemblies 100 are respectively arranged at the four corners of the first box 210 and the second box 220 to ensure the stability and force balance of the connection between the first box 210 and the second box 220.

[0046] In this embodiment, first receiving grooves 230 are provided at the four corners of the top of the first box body 210, and second receiving grooves 240 are provided at the four corners of the bottom of the second box body 220. The first receiving grooves 230 and the second receiving grooves 240 are both used to install the connection assembly 100 to reduce the size occupied by the connection assembly 100 in the Z direction, thereby reducing the size of the energy storage container 200 in the Z direction, and playing a role in saving space.

[0047] It should be noted that the directional terms such as "top" and "bottom" in this application are mainly based on the energy storage system 500 attached. Figure 1 The display orientation is explained in detail, with the positive direction of the Z axis being the “top” and the negative direction of the Z axis being the “bottom”, which does not constitute a limitation on the orientation of the energy storage system 500 in actual application scenarios.

[0048] See also Figure 3 , Figure 3 yes Figure 2A schematic structural diagram of the connection assembly 100 in the energy storage system 500 is shown.

[0049] The connection assembly 100 includes a first corner piece 10, a second corner piece 20 and a locking tongue 30. The first corner piece 10 is used to be fixedly connected to the first box body 210, the second corner piece 20 is used to be fixedly connected to the second box body 220, and the locking tongue 30 is fixedly connected between the first corner piece 10 and the second corner piece 20, thereby realizing the fixed connection between the first box body 210 and the second box body 220.

[0050] Please combine Figure 4 and Figure 5 , Figure 4 yes Figure 3 The schematic diagram of the partially exploded structure of the connection assembly 100 is shown in FIG. Figure 5 yes Figure 3 The schematic diagram of the exploded structure of the connecting assembly 100 shown in another angle.

[0051] In this embodiment, the first corner piece 10 is a cube. In other embodiments, the first corner piece 10 may also be a cuboid or other shapes. The first corner piece 10 is a hollow structure.

[0052] The first corner piece 10 includes a first top plate 11, a first bottom plate 12 and a first side plate 13. The first top plate 11 and the first bottom plate 12 are arranged opposite to each other along the Z direction. There are four first side plates 13. The four first side plates 13 are connected end to end in sequence and are connected between the first top plate 11 and the first bottom plate 12. The first top plate 11, the first bottom plate 12 and the first side plates 13 enclose a first mounting groove 14.

[0053] The first top plate 11 is provided with a first lock hole 15. The first lock hole 15 is connected to the first mounting groove 14. In the present embodiment, the first lock hole 15 is roughly rectangular. The length direction of the first lock hole 15 is parallel to the X direction, and the width direction is parallel to the Y direction. The first lock hole 15 is used to install the lock tongue 30. The first side plate 13 is provided with a first through hole 16. The first through hole 16 is connected to the first mounting groove 14. In the present embodiment, there are two first through holes 16. The two first through holes 16 are respectively provided in the two first side plates 13 adjacent to the first corner piece 10, and the two first through holes 16 are both connected to the first mounting groove 14. The first through hole 16 is used to install a hoisting fixture to facilitate hoisting of the first box body 210.

[0054] In this embodiment, the structure of the second corner piece 20 is the same as that of the first corner piece 10, so as to standardize the production of corner pieces and reduce the production cost of corner pieces. In other embodiments, the structure of the second corner piece 20 may be slightly different from that of the first corner piece 10.

[0055] The second corner piece 20 includes a second top plate 21, a second bottom plate 22 and four second side plates 23. The second top plate 21 and the second bottom plate 22 are arranged opposite to each other along the Z direction. The four second side plates 23 are connected end to end in sequence and are connected between the second top plate 21 and the second bottom plate 22. The second top plate 21, the second bottom plate 22 and the second side plates 23 enclose a second mounting groove 24. The second bottom plate 22 is provided with a second locking hole 25. The second locking hole 25 is connected to the second mounting groove 24. In this embodiment, the second locking hole 25 is roughly rectangular. The second locking hole 25 is used to install the locking tongue 30. The second side plate 23 is provided with a second through hole 26. In this embodiment, there are two second through holes 26. The two second through holes 26 are respectively provided in two second side plates 23 adjacent to the second corner piece 20, and the two second through holes 26 are both connected to the second mounting groove 24.

[0056] See also Figure 6 , Figure 6 yes Figure 3 An enlarged structural schematic diagram of the locking tongue 30 in the connecting assembly 100 is shown.

[0057] The locking tongue 30 includes a limiting portion 31, a bridging portion 32 and a locking portion 33. The bridging portion 32 is fixedly connected between the limiting portion 31 and the locking portion 33. The limiting portion 31 is used to connect with the second corner piece 20, and the locking portion 33 is used to connect with the first corner piece 10.

[0058] In this embodiment, the limiting portion 31 is a diamond plate-like structure. That is, the cross section of the limiting portion 31 along the XY plane is a diamond. In other embodiments, the limiting portion 31 may also be a rectangle, a parallelogram or other shapes. The shape of the limiting portion 31 is not specifically limited here.

[0059] The limiting portion 31 includes a first side surface 311, a second side surface 312, a third side surface 313 and a fourth side surface 314. The first side surface 311, the second side surface 312, the third side surface 313 and the fourth side surface 314 are connected end to end in sequence. Among them, the first side surface 311 and the third side surface 313 are arranged oppositely and parallel to each other along the X direction. The first side surface 311 and the third side surface 313 are parallel or approximately parallel to the YZ plane. The second side surface 312 and the fourth side surface 314 are arranged oppositely and parallel to each other along the Y direction, and the angle between the second side surface 312 and the fourth side surface 314 and the Y direction is greater than 0 degrees and less than 90 degrees. In this embodiment, the angle between the second side surface 312 and the Y direction is 60 degrees, and the angle between the fourth side surface 314 and the Y direction is 60 degrees.

[0060] The limiting portion 31 further includes a first limiting end 315 and a second limiting end 316. The first limiting end 315 and the second limiting end 316 are respectively located at opposite ends of the long diagonal line of the limiting portion 31. It can be understood that the first limiting end 315 is located at the connection between the first side surface 311 and the second side surface 312, and the second limiting end 316 is located at the connection between the third side surface 313 and the fourth side surface 314. The first limiting end 315 and the second limiting end 316 are used for abutting against the second corner piece 20.

[0061] The bridging portion 32 is fixedly connected to the bottom of the limiting portion 31. In addition, the center line of the bridging portion 32 along the Z direction coincides or substantially coincides with the center line of the limiting portion 31 along the Z direction. The maximum dimension of the bridging portion 32 in the XY plane is less than or equal to the width of the limiting portion 31. In other words, the maximum dimension of the bridging portion 32 in the XY plane is less than or equal to the dimension of the limiting portion 31 along the X direction. In other words, the orthographic projection of the bridging portion 32 along the Z direction is completely located within the limiting portion 31. At the same time, the maximum dimension of the bridging portion 32 in the XY plane is less than or equal to the width of the second locking hole 25, so that the limiting portion 31 can be installed into the second corner piece 20 from the second locking hole 25.

[0062] In this embodiment, the bridge portion 32 is cylindrical, and the diameter of the bridge portion 32 is less than or equal to the size of the short diagonal of the limiting portion 31 and the width of the second locking hole 25. In other embodiments, the bridge portion 32 may also be a prism or other shapes.

[0063] Please continue reading Figure 6 The locking portion 33 is roughly in the shape of a "J". The locking portion 33 includes a support body 34 and a clamping body 35. The support body 34 is a rectangular plate-like structure. The support body 34 is connected to one end of the bridging portion 32 facing away from the limiting portion 31, and is parallel to the limiting portion 31 and spaced apart. The length direction of the support body 34 is parallel or roughly parallel to the Y direction, and the width direction of the support body 34 is parallel or roughly parallel to the X direction. In addition, the center line of the support body 34 along the Z direction coincides or roughly coincides with the center line of the bridging portion 32 along the Z direction.

[0064] The clamping body 35 is in the shape of a hook. The clamping body 35 includes an inclined section 351 and an extension section 352. The inclined section 351 includes a first surface 353 and a second surface 354. The first surface 353 and the second surface 354 are arranged opposite to each other along the Y direction. The inclined section 351 is fixedly connected to the bottom of the support body 34. Among them, the first surface 353 is provided with a protruding portion 355. The protruding portion 355 protrudes from the first surface 353. A limiting groove 356 is formed between the protruding portion 355 and the support body 34. That is, the limiting groove 356 and the protruding portion 355 are arranged in sequence along the Z direction.

[0065] The second surface 354 is a curved surface. Along the negative direction of the Z axis, the second surface 354 is inclined and curved toward the first surface 353. The second surface 354 includes a first curved surface 3541, a third curved surface 3542, and a second curved surface 3543. Towards the direction away from the support body 34, the first curved surface 3541, the third curved surface 3542, and the second curved surface 3543 are connected in sequence. Among them, the first curved surface 3541 and the third curved surface 3542 are both bent toward the limiting groove 356, and are arranged opposite to the limiting groove 356 along the Y direction, so as to facilitate the clamping body 35 to pass through the first lock hole 15, and at the same time facilitate the limiting groove 356 and the first top plate 11 to be limited.

[0066] The second arc surface 3543 is bent toward the protruding portion 355 and is arranged opposite to the protruding portion 355 along the Y direction to reduce the size of the clamping body 35 along the Y direction at the position where the protruding portion 355 is provided, thereby making it easier for the clamping body 35 to pass through the first lock hole 15 and enter the first installation groove 14 to achieve clamping with the first corner piece 10, thereby reducing the difficulty of installation.

[0067] The extension section 352 is arranged at one end of the inclined section 351 facing away from the support body 34, and is fixedly connected to the second surface 354. The extension section 352 extends in a direction away from the second surface 354. That is, the extension section 352 extends in the positive direction of the Y axis. The angle between the extension direction of the extension section 352 and the second surface 354 is greater than 0 degrees, and the angle between the extension section 352 and the Z direction is greater than 0 degrees. In other words, the extension section 352 is set at an angle to the second surface 354 and the Z direction. In this embodiment, the extension direction of the extension section 352 is parallel to the Y direction. In other embodiments, the extension direction of the extension section 352 may also have a smaller angle with the Y direction. It can be understood that the extension direction of the extension section 352 is opposite to the protruding direction of the protruding portion 355.

[0068] Please also read Figure 7 and Figure 8 , Figure 7 yes Figure 3 The cross-sectional structure diagram of the connection assembly 100 is shown in FIG. Figure 8 yes Figure 7 The cross-sectional structure schematic diagram of the connecting assembly 100 at another angle is shown.

[0069] The first corner piece 10 and the second corner piece 20 are arranged at intervals along the Z direction, and the first locking hole 15 and the second locking hole 25 are arranged opposite to each other. The locking tongue 30 is fixedly connected between the first corner piece 10 and the second corner piece 20. Among them, the bridging portion 32 is inserted into the second locking hole 25, the limiting portion 31 is located in the second mounting groove 24, and the first limiting end 315 and the second limiting end 316 both abut against the surface of the second bottom plate 22 facing the second mounting groove 24. In other words, the orthographic projections of the first limiting end 315 and the second limiting end 316 along the Z direction at least partially overlap with the second bottom plate 22. The supporting body 34 is located between the first corner piece 10 and the second corner piece 20. The length direction of the supporting body 34 is parallel to the Y direction, and the two opposite side surfaces of the supporting body 34 along the Z direction respectively abut against the first top plate 11 of the first corner piece 10 and the second bottom plate 22 of the second corner piece 20. The clamping body 35 passes through the first locking hole 15 and is fixedly connected to the first corner piece 10. The first top plate 11 is clamped in the limiting groove 356 of the clamping body 35. The protruding portion 355 of the clamping body 35 is located in the first mounting groove 14 and abuts against the surface of the first top plate 11 facing the first mounting groove 14. Moreover, the orthographic projection of the protruding portion 355 along the Z direction at least partially overlaps with the first top plate 11.

[0070] When the locking tongue 30 is subjected to a force in the negative direction of the Z axis, the first limiting end 315 and the second limiting end 316 abut against the second bottom plate 22, and the second bottom plate 22 can prevent the limiting portion 31 from being separated from the second corner piece 20. In this embodiment, the connection stability between the locking tongue 30 and the second corner piece 20 can be improved by providing the first limiting end 315 and the second limiting end 316.

[0071] When the locking tongue 30 is subjected to a force in the positive direction of the Z axis, the protruding portion 355 abuts against the first top plate 11, and the first top plate 11 can prevent the locking tongue 30 from being separated from the first corner piece 10. At the same time, the first top plate 11 abuts against the inner wall of the limiting groove 356, and the limiting groove 356 can further prevent the locking tongue 30 from being separated from the first corner piece 10. In this embodiment, the locking tongue 30 and the first corner piece 10 can be fixedly connected by providing the clamping body 35, thereby achieving a fixed connection between the first corner piece 10, the second corner piece 20 and the locking tongue 30. In addition, in this embodiment, the connection stability between the locking tongue 30 and the first corner piece 10 can be improved by providing the protruding portion 355 and the limiting groove 356.

[0072] Furthermore, in this embodiment, by providing a support body 34, and the support body 34 is located between the first corner piece 10 and the second corner piece 20, when the locking tongue 30 is subjected to a force along the Z direction, the support body 34 can prevent the locking tongue 30 from moving toward the first installation groove 14 of the first corner piece 10 and disengaging from the second corner piece 20, and can also prevent the locking tongue 30 from moving toward the second installation groove 24 of the second corner piece 20 and disengaging from the first corner piece 10, thereby further improving the connection stability of the connecting assembly 100.

[0073] At the same time, in the present embodiment, by setting the holding body 35 to a hook shape and providing an extension section 352 at the bottom of the holding body 35, when the locking tongue 30 moves in a direction away from the first corner piece 10, the extension section can hook the first top plate 11 of the first corner piece 10, thereby preventing the locking tongue 30 from detaching from the first corner piece 10 and improving the connection stability between the locking tongue 30 and the first corner piece 10.

[0074] Please combine Figure 2 The connecting assembly 100 is fixedly connected between the first box body 210 and the second box body 220. The first corner piece 10 is installed in the first receiving groove 230 at the top of the first box body 210 and is fixedly connected to the first box body 210. The second corner piece 20 is installed in the second receiving groove 240 at the bottom of the second box body 220 and is fixedly connected to the second box body 220.

[0075] See also Fig. 9 and Fig.10 , Fig. 9 yes Figure 7 The cross-sectional structure diagram of the connecting assembly 100 shown in another state, Fig.10 yes Fig. 9 The cross-sectional structure schematic diagram of the connecting assembly 100 at another angle is shown.

[0076] in, Figure 7 and Figure 8 The connecting assembly 100 is shown in a locked state. Fig. 9 and Fig.10 The connection assembly 100 is shown in an unlocked state.

[0077] like Fig. 9 and Fig.10 As shown, when the connection assembly 100 is in the unlocked state, the first side surface 311 and the third side surface 313 of the limiting portion 31 are parallel to the X direction, and the orthographic projection of the limiting portion 31 along the Z direction is completely located in the second locking hole 25 and does not overlap with the second top plate 21. In other words, the orthographic projections of the first limiting end 315 and the second limiting end 316 along the Z direction are both located in the second locking hole 25 and do not overlap with the second top plate 21. At this time, when a force in the positive direction of the Z axis is applied to the second corner piece 20, the second corner piece 20 can be separated from the locking tongue 30.

[0078] like Fig.10 As shown, the size of the limiting portion 31 along the Y direction, that is, the width of the limiting portion 31 is b. That is, the vertical distance between the first side surface 311 and the third side surface 313 is b. The size of the second locking hole 25 along the Y direction, that is, the width of the second locking hole 25 is a. Wherein, a>b. In other words, the width of the limiting portion 31 is smaller than the width of the second locking hole 25, so that the limiting portion 31 can be installed in the second installation groove 24 through the second locking hole 25.

[0079] The distance from the center of the limiting part 31 to the first limiting end 315 is R1. That is, the maximum distance from the center of the limiting part 31 to the outer peripheral edge of the limiting part 31 is R1. The distance from the center of the limiting part 31 to the inner wall of the second locking hole 25 along the Y direction is R2. That is, the maximum distance from the center of the limiting part 31 to the inner wall of the second locking hole 25 is R2. Among them, R1 < R2. That is to say, the maximum distance from the center of the limiting part 31 to the outer peripheral edge of the limiting part 31 is less than the maximum distance from the center of the limiting part 31 to the inner wall of the second locking hole 25, so that when the connecting component 100 is in the unlocked state, the positive projection of the limiting part 31 along the Z direction is completely located within the second locking hole 25, so as to ensure that the limiting part 31 can be installed into the second installation groove 24 through the second locking hole 25.

[0080] The distance between the first limiting end 315 and the second limiting end 316 of the limiting part 31 is c. Among them, c > a. That is to say, the distance between the first limiting end 315 and the second limiting end 316 is greater than the width of the second locking hole 25, so that when the limiting part 31 rotates around its center line along the Z direction, the first limiting end 315 and the second limiting end 316 can rotate to be arranged opposite to the second bottom plate 22 along the Z direction and abut against the second bottom plate 22.

[0081] During the actual installation process of the connecting component 100, first pass the limiting part 31 of the locking tongue 30 through the second locking hole 25 of the second corner fitting 20 and extend it into the second installation groove 24, and then rotate the locking tongue 30 to make the first limiting end 315 and the second limiting end 316 rotate towards the direction of the second bottom plate 22, so that the first limiting end 315 and the second limiting end 316 are stacked with the second bottom plate 22 along the Z direction and abut against the second bottom plate 22. Then, align the clamping body 35 of the locking tongue 30 with the first locking hole 15 of the first corner fitting 10, and press the locking tongue 30 towards the direction of the first corner fitting 10, so that the protruding part 355 of the clamping body 35 passes through the first locking hole 15 and enters the first installation groove 14, so that the connecting component 100 is in the locked state (as Figure 7 and Figure 8 shown).

[0082] When it is necessary to disassemble the connecting component 100, the locking tongue 30 can be rotated first to make the first limiting end 315 and the second limiting end 316 rotate away from the direction of the second bottom plate 22 and make the limiting part 31 completely aligned with the second locking hole 25, that is, make the projection of the limiting part 31 along the Z direction completely located within the second locking hole 25 (as Fig.10 shown), and then apply a force to the second corner fitting 20 in the direction away from the locking tongue 30, so that the second corner fitting 20 can be separated from the locking tongue 30. Then, take out the locking tongue 30 from the first corner fitting 10, and the disassembly of the connecting component 100 can be realized.

[0083] The connection assembly 100 provided in this embodiment is a detachable structure. The locking tongue 30 is installed between the first corner piece 10 and the second corner piece 20 to achieve fixed connection between the first corner piece 10 and the second corner piece 20. The locking tongue 30 is removed from the first corner piece 10 and the second corner piece 20 to separate the first corner piece 10 and the second corner piece 20. The connection assembly 100 provided in this embodiment has a simple installation and disassembly process and is reusable, which can save costs.

[0084] Please also read Figure 1 and Figure 2 The energy storage container 200 further includes a third corner piece 250. The structure of the third corner piece 250 is the same as that of the first corner piece 10 and the second corner piece 20. In this embodiment, there are four third corner pieces 250. The four third corner pieces 250 are respectively installed at the four corners of the top of the second box body 220.

[0085] The process of hoisting the energy storage system 500 onto the cargo ship includes:

[0086] (1) The first corner pieces 10 are fixed to the four corners of the top of the first box body 210 , the second corner pieces 20 are fixed to the four corners of the bottom of the second box body 220 , and the third corner pieces 250 are fixed to the four corners of the top of the second box body 220 .

[0087] (2) The lifting tool of the dock crane is fixedly connected to the first corner piece 10 of the first box body 210, and the first energy storage unit 510 is lifted to the clamping plate of the cargo ship through the crane and fixed to the clamping plate of the cargo ship.

[0088] (3) Provide four locking tongues 30 and hang the four locking tongues 30 on the second corner piece 20.

[0089] (4) The lifting tool of the dock crane is fixedly connected to the third corner piece 250 of the second box body 220, and the second energy storage unit 520 with the lock tongue 30 is lifted to the top of the first energy storage unit 510 through the crane, so that the clamping bodies 35 of the four lock tongues 30 are respectively aligned with the first lock holes 15 of the first corner piece 10, and the second energy storage unit 520 with the lock tongue 30 is dropped toward the first energy storage unit 510. Under the action of gravity, each lock tongue 30 is respectively installed to the corresponding first corner piece 10 and fixedly connected to the corresponding first corner piece 10 one by one, so that the second energy storage unit 520 is fixedly connected to the first energy storage unit 510.

[0090] like Figure 2 As shown, after the multiple energy storage units of the energy storage system 500 are hoisted onto the cargo ship respectively, they are fixedly connected to each other through the connecting assembly 100, which can improve the structural stability of the energy storage system 500 and thus improve the safety of transportation.

[0091] After the energy storage system 500 is installed, the first box body 210 and the second box body 220 are spaced apart, and there is a gap 1 between the first box body 210 and the second box body 220. The dimension of the gap 1 along the Z direction is h. h is equal to the height of the connecting assembly 100 in the locked state, minus the height of the first receiving groove 230 and the height of the second receiving groove 240. The "height" here refers to the dimension along the Z direction.

[0092] Among them, the length of the first box body 210 is consistent with the length of a standard container, and the width of the first box body 210 is consistent with the width of a standard container. The length of the second box body 220 is consistent with the length of a standard container, and the width of the second box body 220 is consistent with the width of a standard container. The height of the first box body 210 and the second box body 220 after stacking is consistent with the height of a standard container. That is, the size of the energy storage system 500 is consistent with the size of a standard container. The weight of each energy storage unit is less than or equal to the weight of a standard container, which can meet the requirements of dock hoisting.

[0093] For example, when the size of the energy storage system 500 is consistent with the size of a standard 20-foot container, the length of the first box 210 and the length of the second box 220 are equal to the length of the standard 20-foot container, both of which are 6058 mm; the width of the first box 210 and the width of the second box 220 are equal to the width of the standard 20-foot container, both of which are 2438 mm. The sum of the height of the first box 210, the height of the second box 220, and the size of the gap 1 along the Z direction is equal to the height of the standard 20-foot container, both of which are 2896 mm, or 2393 mm.

[0094] In this embodiment, the energy storage system 500 formed by stacking multiple energy storage units meets the standard container size and can be transported by ordinary cargo ships. In addition, in this embodiment, by dividing the energy storage system 500 into multiple energy storage units, and each energy storage unit can meet the dock hoisting requirements, each energy storage unit can be hoisted to the cargo ship separately, so as to realize the transfer of the entire energy storage system 500 to the cargo ship, without the need to disassemble and assemble the batteries in the energy storage system 500, and without the need to customize special cargo ships for transportation, the transportation cost of the energy storage system 500 can be reduced.

[0095] When the energy storage system 500 needs to be unloaded from the cargo ship, the locking tongue 30 can be rotated first to put the connecting assembly 100 in an unlocked state (such as Fig. 9 and Fig.10 As shown), the second energy storage unit 520 is then removed by a hanging tower, the locking tongue 30 is removed from the first corner piece 10, and then the first energy storage unit 510 is removed by a hanging tower.

[0096] The energy storage system 500 provided in this embodiment realizes the fixed connection between the first energy storage unit 510 and the second energy storage unit 520 through a detachable connecting component 100. The first energy storage unit 510 and the second energy storage unit 520 can be removed by unlocking the connecting component 100, thereby simplifying the unloading process of the energy storage system 500 and further saving transportation costs.

[0097] In another embodiment of the present application, the energy storage system 500 includes n energy storage units, and the number of connecting components 100 is 4*(n-1). Where n>2. The n energy storage units are stacked in sequence along the Z direction, and four connecting components 100 are fixed between each two adjacent energy storage units. It should be noted that when n=2, the structure of the energy storage system 500 is the same as Figure 1 The structures of the illustrated embodiments are identical.

[0098] In actual use, corner fittings can be pre-installed at the eight corners of each energy storage unit. Among them, the four corner fittings at the bottom of the energy storage unit can be understood as Figure 1 The first corner piece 10 in the embodiment shown, the corner piece at the top of the energy storage unit can be understood as Figure 1 The second corner piece 20 in the illustrated embodiment. In fact, the structures of the first corner piece 10 and the second corner piece 20 may be the same, that is, the structures of the eight corner pieces fixed to each energy storage unit are the same.

[0099] The process of hoisting the energy storage system 500 onto the cargo ship includes:

[0100] (1) The lifting tool of the dock crane is fixedly connected to the corner piece on the top of the first energy storage unit, and the first energy storage unit is lifted to the clamping plate of the cargo ship through the crane and fixed to the clamping plate of the cargo ship.

[0101] (2) Provide four locking tongues 30 and hang the four locking tongues 30 on the corner pieces at the bottom of the second energy storage unit.

[0102] (3) The lifting tool of the dock crane is fixedly connected to the corner fitting at the top of the second energy storage unit, and the second energy storage unit with the locking tongue 30 is lifted onto the top of the first energy storage unit by the crane, so that the four locking tongues 30 are respectively aligned with the corner fitting at the top of the first energy storage unit, and the second energy storage unit with the locking tongue 30 is dropped toward the first energy storage unit. Under the action of gravity, each locking tongue 30 is respectively installed to the corresponding corner fitting at the top of the first energy storage unit, so that the second energy storage unit is fixedly connected to the first energy storage unit.

[0103] (4) Provide four locking tongues 30 and hang the four locking tongues 30 on the corner pieces at the bottom of the third energy storage unit.

[0104] (5) The lifting tool of the dock crane is fixedly connected to the corner fitting at the top of the third energy storage unit, and the third energy storage unit with the locking tongue 30 is lifted onto the top of the second energy storage unit by the crane, so that the four locking tongues 30 are respectively aligned with the corner fitting at the top of the second energy storage unit, and the third energy storage unit with the locking tongue 30 is dropped toward the second energy storage unit. Under the action of gravity, each locking tongue 30 is respectively installed to the corresponding corner fitting at the top of the second energy storage unit, so that the third energy storage unit is fixedly connected to the second energy storage unit.

[0105] …

[0106] (2n-2) Provide four locking tongues 30, and hang the four locking tongues 30 on the corner pieces at the bottom of the nth energy storage unit.

[0107] (2n-1) The lifting tool of the dock crane is fixedly connected to the corner fitting on the top of the n-th energy storage unit, and the n-th energy storage unit with the locking tongue 30 is lifted to the top of the n-1-th energy storage unit through the crane, so that the four locking tongues 30 are respectively aligned with the corner fitting on the top of the n-1-th energy storage unit, and the n-th energy storage unit with the locking tongue 30 is dropped toward the n-1-th energy storage unit. Under the action of gravity, each locking tongue 30 is respectively installed to the corresponding corner fitting on the top of the n-1-th energy storage unit, so that the n-th energy storage unit is fixedly connected with the n-1-th energy storage unit, thereby realizing the transfer of the energy storage system 500 to the cargo ship.

[0108] Assume that the allowable weight of dock hoisting is T1, the weight of a single energy storage unit is T2, and T2≤T1.

[0109] Assuming that the length of a standard container is L1 and the length of a single energy storage unit is L2, then L1 = L2;

[0110] Assuming that the width of a standard container is W1 and the width of a single energy storage unit is W2, then W1 = W2;

[0111] Assuming that the height dimension of a standard container is H1, the height dimension of a single energy storage unit is H2, the height dimension after the fixed lock tongue 30 is fixed minus the height of the first receiving groove 230 and the height of the second receiving groove 240 is h, that is, the gap 1 between two adjacent energy storage units is h, then H1=n*H2+(n-1)*h.

[0112] In this embodiment, the energy storage system 500 is divided into n energy storage units, and two adjacent energy storage units are fixedly connected by a detachable connecting assembly 100, so that each energy storage unit can be hoisted to a cargo ship separately, thereby realizing the transfer of the entire energy storage system 500 to the cargo ship, without the need to disassemble and assemble the batteries in the energy storage system 500, and without the need to customize a special cargo ship for transportation, thereby reducing the transportation cost of the energy storage system 500.

[0113] The embodiments of the present application are introduced in detail above. Specific examples are used in this article to illustrate the principles and implementation methods of the present application. The description of the above embodiments is only used to help understand the method and core idea of ​​the present application. At the same time, for general technical personnel in this field, according to the idea of ​​the present application, there will be changes in the specific implementation method and application scope. In summary, the content of this specification should not be understood as a limitation on the present application.

Claims

1. A connection assembly, applied to an energy storage container, the energy storage container comprising a first box body and a second box body, It is characterized in that The connecting assembly includes a first corner piece, a second corner piece and a locking tongue; The locking tongue comprises a limiting portion and a locking portion, wherein the limiting portion and the locking portion are fixedly connected along a first direction, and a protruding portion is provided on a side surface of the locking portion, wherein the protruding portion protrudes toward a second direction; the second direction is perpendicular to the first direction; A first mounting groove is provided in the first corner piece, and a first locking hole is provided on the surface of the first corner piece, and the first locking hole is connected to the first mounting groove; A second mounting groove is provided in the second corner piece, and a second locking hole is provided on the surface of the second corner piece, and the second locking hole is communicated with the second mounting groove; The first corner piece and the second corner piece are stacked along the first direction, and the first locking hole is opposite to the second locking hole; The first corner piece is used for fixed connection with the first box body, and the second corner piece is used for fixed connection with the second box body; the connecting assembly includes a locking state, and when the connecting assembly is in the locking state, the limiting portion is clamped in the second mounting groove and abuts against the inner wall of the second mounting groove; the end of the locking portion away from the limiting portion is clamped in the first mounting groove, and the protruding portion abuts against the inner wall of the first mounting groove.

2. The connection assembly according to claim 1, It is characterized in that The locking portion is further provided with a limiting groove, and the limiting groove and the protruding portion are sequentially arranged along the first direction; when the connecting component is in the locking state, the inner wall of the first locking hole is clamped in the limiting groove.

3. The connection assembly according to claim 2, It is characterized in that The locking portion includes a supporting body and a clamping body, one side of the supporting body is fixedly connected to the clamping body, and the other side is fixedly connected to the limiting portion; when the connecting assembly is in the locking state, the clamping body is clamped to the first corner piece, and the supporting body is limited between the first corner piece and the second corner piece.

4. The connection assembly according to claim 3, It is characterized in that The holding body includes an inclined section and an extension section, and the inclined section is fixedly connected to the supporting body; the inclined section includes a first surface and a second surface, and the first surface and the second surface are arranged opposite to each other along the second direction; the protruding portion and the limiting groove are both arranged on the first surface, and the extension section is connected to the second surface and extends in a direction away from the second surface, and the extension section is located at one end of the inclined section away from the supporting body.

5. The connection assembly according to claim 4, It is characterized in that The second surface includes a first arc surface, the first arc surface and the limiting groove are arranged opposite to each other along the second direction, and the first arc surface is bent toward the limiting groove.

6. The connection assembly according to claim 5, It is characterized in that The second surface also includes a second curved surface, which is connected to an end of the first curved surface away from the support body, and the second curved surface is arranged opposite to the protruding portion along the second direction, and the second curved surface is bent toward the protruding portion.

7. The connection assembly according to claim 3, It is characterized in that The limiting portion includes a first limiting end and a second limiting end, the first limiting end and the second limiting end are arranged opposite to each other and are symmetrical about the center line of the limiting portion along the first direction; when the connecting assembly is in the locked state, the first limiting end and the second limiting end abut against the inner wall of the second mounting groove.

8. The connection assembly according to claim 7, It is characterized in that An angle between a direction from the first limiting end to the second limiting end and a length direction of the support body is greater than 0 degrees and less than 90 degrees.

9. The connection assembly according to claim 7, It is characterized in that The connecting assembly also includes a bridging portion, which is connected between the limiting portion and the supporting body, and the projection of the bridging portion along the first direction is completely located within the limiting portion; when the connecting assembly is in the locked state, the bridging portion is located within the second locking hole.

10. The connection assembly according to claim 9, It is characterized in that The projection of the support body along the first direction completely covers the bridge portion, and the projection area of ​​the support body along the first direction is larger than the projection area of ​​the bridge portion along the first direction.

11. The connection assembly according to claim 1, It is characterized in that The connection assembly also includes an unlocked state. When the connection assembly is in the unlocked state, the limiting portion is unlocked from the second corner piece, and the projection of the limiting portion along the first direction is completely located in the second locking hole.

12. An energy storage container, It is characterized in that The invention comprises a first box body, a second box body and a connection assembly according to any one of claims 1 to 11, wherein the first box body and the second box body are stacked along the first direction, the first corner piece is fixed to a side of the first box body close to the second box body, and the second corner piece is fixed to a side of the second box body close to the first box body.

13. The energy storage container according to claim 12, It is characterized in that A first receiving groove is provided on one side of the first box body close to the second box body, a second receiving groove is provided on one side of the second box body close to the first box body, the first corner piece is fixed in the first receiving groove, and the second box body is fixed in the second receiving groove.

14. The energy storage container according to claim 13, It is characterized in that There are multiple connecting components, and the multiple connecting components are symmetrically arranged.

15. The energy storage container according to claim 12, It is characterized in that A third corner piece is disposed on a side of the second box body away from the first box body, and the third corner piece is fixedly connected to the second box body.

16. An energy storage system, It is characterized in that The energy storage container comprises a first battery, a second battery and the energy storage container according to any one of claims 12 to 15, wherein the first battery is installed in the first box body and the second battery is installed in the second box body.

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