Box stack structure and energy storage system

Abstract

The utility model belongs to battery manufacturing technical field discloses a kind of box body stacking structure and energy storage system, the box body stacking structure includes box body main part and locking assembly.Multiple box body main parts are arranged in stack, one of two adjacent box body main parts is provided with extension connecting piece, the other is provided with insertion boss, and it is connected by the insertion cooperation of extension connecting piece and insertion boss, extension connecting piece includes angle connection's extension and limit portion, the end of extension departs from limit portion is connected in the side portion of box body main part, limit portion extends towards the insertion boss of adjacent box body main part, and insertion space is formed between box body main part, extension and limit portion, and the insertion boss of adjacent box body main part can be inserted into insertion space;Insertion boss is respectively fastened and connected with extension and limit portion by locking assembly.The box body stacking structure can guarantee the overall consistency of multiple box bodies after stacking, improve the connection reliability between box, and ensure subsequent safe use.

Description

Technical Field

[0001] This utility model relates to the field of battery manufacturing technology, and in particular to a box stacking structure and energy storage system. Background Technology

[0002] With the widespread application of electric new energy vehicles, the power requirements for new energy vehicles are also increasing, especially for models that require larger capacity batteries, such as heavy trucks, where the power requirements are even stronger. A single battery pack cannot meet the power requirements, so multiple battery packs need to be stacked and combined.

[0003] Existing stacked battery packs are connected layer by layer using vertical bolts, resulting in weak overall consistency. Significant stress concentrations easily occur near the bolt holes on the side beams, making them highly dependent on bolt shear strength during horizontal vibration and impact. Some integrated battery packs have added support beams and other components to the original side beam structure for structural reinforcement, but this method still relies heavily on bolt shear strength. Due to the low reliability of connections between battery pack housings, significant safety hazards exist during use.

[0004] Therefore, there is an urgent need for a box-stacking structure and energy storage system to solve the above problems. Utility Model Content

[0005] According to one aspect of the present invention, a box stacking structure is provided, which can ensure the overall consistency of multiple boxes after stacking, improve the reliability of the connection between boxes, and ensure safe use in the future.

[0006] To achieve this objective, the present invention adopts the following technical solution:

[0007] The box stacking structure includes:

[0008] The main body of the box is stacked on top of each other. One of two adjacent main bodies is provided with an extension connector, and the other is provided with a plug-in boss. The two adjacent main bodies are relatively fixed when connected by the plug-in engagement of the extension connector and the plug-in boss. The extension connector includes an extension part and a limiting part connected at an angle. The end of the extension part away from the limiting part is connected to the side of the main body of the box. The limiting part extends toward the plug-in boss of the adjacent main body of the box. A plug-in space is formed between the main body of the box, the extension part and the limiting part. The plug-in boss of the adjacent main body of the box can be inserted into the plug-in space. The shape of the plug-in boss matches the shape of the plug-in space.

[0009] The locking assembly securely connects the insertion boss to the extension and the limiting portion respectively.

[0010] Optionally, the extension connector is provided at the bottom of the upper box body in two adjacent box bodies, and the insertion boss is provided at the top of the lower box body.

[0011] Optionally, the extension connector is provided at least at the bottom of two opposite side plates of the main body of the box, the extension is connected to the side plate of the main body of the box and extends in a direction away from the main body of the box, and the extension is set at an angle to the side plate of the main body of the box.

[0012] Optionally, the thickness of the extension gradually increases along the direction close to the main body of the housing.

[0013] Optionally, the extension is arranged perpendicular to the limiting portion.

[0014] Optionally, the locking assembly includes a first locking member and a second locking member, wherein the extension and the insertion boss are fastened together by the first locking member, and the limiting part and the insertion boss are fastened together by the second locking member.

[0015] Optionally, the extension connector extends along the length and / or width of the main body of the housing, and a plurality of first locking members and a plurality of second locking members are staggered along the length of the extension connector.

[0016] Optionally, the arrangement density of the locking components at both ends of the extension connector is less than the arrangement density of the locking components in the middle of the extension connector.

[0017] Optionally, the main body of the enclosure further includes a reinforcing connector, which is disposed within the insertion space and connected between at least two of the limiting portion, the extension portion, and the side portion of the main body of the enclosure. The extension direction of the reinforcing connector is parallel to the insertion direction of the insertion boss. The insertion boss has a slot corresponding to the reinforcing connector. When the insertion boss of one of two adjacent enclosure bodies is inserted into the insertion space of the other enclosure body, the reinforcing connector in the insertion space is inserted into the slot of the corresponding insertion boss.

[0018] According to another aspect of the present invention, an energy storage system is provided, including a battery module and a stacked housing structure as described in any of the above claims, wherein the top of the housing body has an opening, the battery module is accommodated within the housing body through the opening, and the opening is sealed by the bottom of the housing body located on the upper layer.

[0019] The beneficial effects of this utility model are:

[0020] The box stacking structure provided by this utility model can be used to stack and connect multiple box bodies. One of two adjacent box bodies is provided with an extension connector, and the other with a plug-in boss. The two adjacent box bodies are relatively fixed during connection through the plug-in engagement of the extension connector and the plug-in boss. Specifically, the extension connector includes an extension portion and a limiting portion connected at an angle. One end of the extension portion away from the limiting portion is connected to the side of the box body, and the limiting portion extends towards the plug-in boss of the adjacent box body. A plug-in space is formed between the box body, the extension portion, and the limiting portion, allowing the plug-in boss of the adjacent box body to be inserted into the plug-in space. In other words, by inserting the plug-in boss of one box body into the plug-in space of an adjacent box body, the two box bodies can be connected. Furthermore, because the shape of the plug-in boss matches the shape of the plug-in space, the plug-in boss can be completely embedded within the plug-in space, and the side wall of the plug-in boss fits more tightly with the inner wall of the plug-in space, ensuring stability when the two box bodies are connected. Furthermore, the plug-in boss is securely connected to the extension and the limiting part respectively through locking components. Since the extension and the limiting part are set at an angle, the plug-in boss is locked to the extension and the limiting part respectively, so that there is a locking force in two directions between two adjacent box bodies. This effectively solves the problem of large shear force on the local bolts of the side beam when connecting box bodies, ensures the overall consistency of multiple box bodies after stacking, improves the connection reliability between box bodies, and ensures safe use in the future. Attached Figure Description

[0021] To more clearly illustrate the technical solutions in the embodiments of this utility model, the drawings used in the description of the embodiments of this utility model will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on the content of the embodiments of this utility model and these drawings without creative effort.

[0022] Figure 1 This is a schematic diagram of the stacked box structure provided in this embodiment of the utility model;

[0023] Figure 2 This is a first exploded view of the box stacking structure provided in this embodiment of the utility model;

[0024] Figure 3 yes Figure 2 A magnified view of a section at point A in the middle;

[0025] Figure 4 yes Figure 2 A magnified view of a section at point B in the middle;

[0026] Figure 5This is a side view of the box stacking structure provided in this embodiment of the utility model;

[0027] Figure 6 yes Figure 5 A magnified view of a section at point C;

[0028] Figure 7 This is a second exploded view of the box stacking structure provided in this embodiment of the utility model;

[0029] Figure 8 yes Figure 7 A magnified view of a section at point D.

[0030] In the picture:

[0031] 1. Main body of the enclosure; 11. Side panel; 12. Bottom plate; 13. Extension connector; 131. Extension part; 1311. First connecting hole; 132. Limiting part; 1321. Second connecting hole; 14. Insertion boss; 141. Slot; 142. Buffer; 15. Insertion space; 16. Reinforcing connector; 17. Countersunk hole;

[0032] 2. Base; 21. Base support; 22. Support beam; 221. Locking part. Detailed Implementation

[0033] The technical solution of this utility model will be further described below with reference to the accompanying drawings and specific embodiments.

[0034] To make the objectives, technical solutions, and advantages of the embodiments of this utility model clearer, the technical solutions of the embodiments of this utility model will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of this utility model, and not all embodiments. The components of the embodiments of this utility model described and shown in the accompanying drawings can generally be arranged and designed in various different configurations.

[0035] Therefore, the following detailed description of the embodiments of the present invention provided in the accompanying drawings is not intended to limit the scope of the claimed invention, but merely to illustrate selected embodiments of the invention. All other embodiments obtained by those skilled in the art based on the embodiments of the present invention without inventive effort are within the scope of protection of the present invention.

[0036] It should be noted that similar labels and letters in the following figures indicate similar items. Therefore, once an item is defined in one figure, it does not need to be further defined and explained in subsequent figures.

[0037] In the description of this utility model, it should be noted that the terms "upper," "lower," "left," "right," "vertical," "horizontal," "inner," and "outer," etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings, or the orientation or positional relationship commonly used when the product of this utility model is in use. They are used only for the convenience of describing this utility model and for simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this utility model. Furthermore, the terms "first," "second," and "third," etc., are used only to distinguish descriptions and should not be construed as indicating or implying relative importance. In the description of this utility model, unless otherwise stated, "a plurality of" means two or more.

[0038] In the description of this utility model, it should also be noted that, unless otherwise explicitly specified and limited, the terms "set" and "connection" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a mechanical connection or an electrical connection. Those skilled in the art can understand the specific meaning of the above terms in this utility model based on the specific circumstances.

[0039] In this invention, unless otherwise explicitly specified and limited, "above" or "below" the second feature can include direct contact between the first and second features, or contact between the first and second features through another feature between them. Furthermore, "above," "over," and "on top" of the second feature includes the first feature directly above or diagonally above the second feature, or simply indicates that the first feature is at a higher horizontal level than the second feature. "Below," "below," and "under" the second feature includes the first feature directly below or diagonally below the second feature, or simply indicates that the first feature is at a lower horizontal level than the second feature.

[0040] In the description of this utility model, the term "and / or" is merely a description of the relationship between related objects, indicating that three relationships can exist. For example, A and / or B can represent: A existing alone, A and B existing simultaneously, or B existing alone. Additionally, in this utility model, the character " / " generally indicates that the preceding and following related objects have an "or" relationship.

[0041] The embodiments of this utility model are described in detail below. Examples of these embodiments are shown in the accompanying drawings, wherein the same or similar reference numerals denote the same or similar elements or elements having the same or similar functions throughout. The embodiments described below with reference to the accompanying drawings are exemplary and are only used to explain this utility model, and should not be construed as limiting this utility model.

[0042] This embodiment provides a box stacking structure, such as Figure 1 As shown, it can be used to stack and connect multiple housing bodies 1. The housing body 1 can be, but is not limited to, a battery housing; in this embodiment, only the housing body 1 is used as an example of a battery housing.

[0043] Reference Figure 1 , Figure 2 and Figure 5 The stacked box structure includes a box body 1 and a locking assembly (not shown). Multiple box bodies 1 are stacked vertically. One of two adjacent box bodies 1 is provided with an extension connector 13, and the other with a plug-in boss 14. The adjacent box bodies 1 are relatively fixed during connection through the plug-in engagement of the extension connector 13 and the plug-in boss 14. The plug-in connection facilitates assembly and disassembly and can meet the stacking requirements of different numbers of box bodies 1. In this embodiment, the box body 1 can be selected as 2, 3, 4, or 5 layers, etc. To ensure safety, the box body 1 can have a maximum of 6 layers. Of course, in other embodiments, the number of layers of the box body 1 can be set according to the height of the box body 1 or the usage requirements; no limitation is made here.

[0044] Specifically, in this embodiment, the bottom of the upper box body 1 is provided with an extension connector 13, and the top of the lower box body 1 is provided with a plug-in boss 14. During stacking, operators can use a crane or other lifting equipment to lift one box body 1 onto the other box body 1. After aligning the two box bodies 1, the upper box body 1 is slowly lowered, allowing the extension connector 13 of the upper box body 1 to fit onto the plug-in boss 14 of the lower box body 1, thus achieving the stacking connection of the two box bodies 1.

[0045] It should be noted that, as Figure 1 and Figure 2 As shown, the main body 1 of the box includes a base plate 12 and multiple side plates 11. The multiple side plates 11 are connected to the circumference of the base plate 12, thereby forming the main body 1 of the box. When the main bodies 1 of the box are stacked, the bottom of the bottommost main body 1 does not need to be connected to other main bodies 1, therefore, the bottom of the bottommost main body 1 does not need to be provided with an extension connector 13. The top of the topmost main body 1 does not need to be connected to other main bodies 1, therefore, the top of the topmost main body 1 does not need to be provided with an insertion boss 14. The top of the middle layer main bodies 1 is provided with an insertion boss 14, and the bottom is provided with an extension connector 13, thereby facilitating connection with the upper and lower layers of main bodies 1.

[0046] In this embodiment, the main body 1 of the box is rectangular, and the extension connector 13 is provided at least at the bottom of the two opposite side plates 11 of the main body 1 to ensure the force balance when the main bodies 1 of the box are stacked.

[0047] Continuing, as Figure 1 , Figure 2 and Figure 4 As shown, the stacked container structure also includes a base 2. The bottommost container body 1 is positioned on the base 2. By setting the base 2, a gap can be created between the bottommost container body 1 and the ground, so that forklifts or other transfer mechanisms can move the stacked container bodies 1.

[0048] Specifically, the base 2 includes a base 21 and a support beam 22. The support beam 22 is arranged circumferentially along the main body 1 of the box, and the bottommost main body 1 of the box is fixed to the support beam 22. The base 21 is supported and connected below the support beam 22, thereby supporting the support beam 22 and multiple main bodies 1 of the box.

[0049] More specifically, the support beam 22 is provided with multiple locking parts 221, and the bottom of the lowest box body 1 is provided with multiple countersunk holes 17. The multiple countersunk holes 17 correspond one-to-one with the multiple locking parts 221, and the support beam 22 and the lowest box body 1 are fastened and connected by fasteners.

[0050] like Figure 2 , Figure 3 , Figure 5 and Figure 6 As shown, the extension connector 13 includes an extension portion 131 and a limiting portion 132 connected at an angle. One end of the extension portion 131, away from the limiting portion 132, is connected to the side of the housing body 1, and the limiting portion 132 extends toward the insertion boss 14 of the adjacent housing body 1. An insertion space 15 is formed between the housing body 1, the extension portion 131, and the limiting portion 132, and the insertion boss 14 of the adjacent housing body 1 can be inserted into the insertion space 15. That is, by inserting the insertion boss 14 of one housing body 1 into the insertion space 15 of another adjacent housing body 1, the two housing bodies 1 can be connected. Furthermore, since the shape of the insertion boss 14 matches the shape of the insertion space 15, the insertion boss 14 can be completely embedded in the insertion space 15, and the side wall of the insertion boss 14 fits more tightly with the inner wall of the insertion space 15, ensuring the stability of the connection between the two housing bodies 1.

[0051] Specifically, the extension 131 is connected to the side plate 11 of the main body 1 and extends in a direction away from the main body 1, with the extension 131 and the side plate 11 of the main body 1 forming an angle. In this embodiment, the extension 131 is perpendicular to the side plate 11 of the main body 1. That is, the extension connector 13 extends horizontally outward from the side of the main body 1, without occupying too much space in the stacking direction of the main body 1, thus making full use of the structure of the main body 1.

[0052] More specifically, the thickness of the extension 131 gradually increases along the direction close to the main body 1 of the housing. This arrangement increases the reliability of the connection between the extension 131 and the main body 1 of the housing, effectively preventing the extension 131 from breaking due to excessive stress.

[0053] More specifically, refer to Figure 6 The extension 131 is perpendicular to the limiting part 132. This arrangement facilitates manufacturing and ensures proper alignment when the two main body boxes 11 are stacked, reducing the difficulty of operation for the operator and improving work efficiency.

[0054] Continue to refer to Figure 2 , Figure 3 , Figure 5 and Figure 6 The insertion boss 14 is fastened to the extension 131 and the limiting part 132 respectively through locking components. Since the extension 131 and the limiting part 132 are set at an angle, the insertion boss 14 is locked to the extension 131 and the limiting part 132 respectively, so that there is a locking force in two directions between two adjacent box bodies 1. This effectively solves the problem of large shear force on the local bolts of the side beam when connecting traditional box bodies, ensures the overall consistency of multiple box bodies 1 after stacking, improves the connection reliability between box bodies 1, and ensures safe use in the future.

[0055] Specifically, the locking assembly includes a first locking member and a second locking member. The extension 131 and the insertion boss 14 are fastened together by the first locking member, and the limiting part 132 and the insertion boss 14 are fastened together by the second locking member. In this embodiment, the extension 131 has a first connecting hole 1311, and the limiting part 132 has a second connecting hole 1321. The first locking member passes through the first connecting hole 1311 on the extension 131 and is screwed to one side of the insertion boss 14 of the adjacent housing body 1; the second locking member passes through the second connecting hole 1321 on the limiting part 132 and is screwed to the other side of the insertion boss 14. Exemplarily, both the first locking member and the second locking member can be selected as threaded fasteners such as bolts.

[0056] More specifically, the extension connector 13 extends along the length and / or width of the main body 1, and multiple first locking members and multiple second locking members are staggered along the length of the extension connector 13. In this embodiment, the extension connector 13 is disposed at the bottom of two side plates 11 parallel to the length of the main body 1. The extension portion 131 extends outward in the horizontal direction, and the limiting portion 132 extends downward parallel to the side plates 11 of the main body 1. The axial directions of the first locking members and the second locking members are perpendicular to each other, and multiple first locking members and multiple second locking members are staggered in the length direction. The provision of the second locking members further reduces the shear load on the first locking members, while strengthening the connection between the layers of the main body 1.

[0057] More specifically, the density of the locking components at both ends of the extension connector 13 is less than the density of the locking components in the middle of the extension connector 13. Adjusting the density of the locking components according to the stress on the extension connector 13 can effectively solve the problem of large local stress in the extension connector 13.

[0058] Optionally, such as Figures 5-8 As shown, the main body 1 of the enclosure also includes a reinforcing connector 16. The reinforcing connector 16 is disposed within the insertion space 15 and connects to at least two of the limiting portion 132, the extension portion 131, and the side portion of the main body 1. The reinforcing connector 16 can be disposed between the extension portion 131 and the limiting portion 132, between the extension portion 131 and the side plate 11 of the main body 1, or between the limiting portion 132, the extension portion 131, and the side plate 11 of the main body 1. It can improve the connection strength between the components and ensure the reliability of the connection. In this embodiment, the reinforcing connector 16 is connected between the limiting portion 132, the extension portion 131, and the side plate 11 of the main body 1.

[0059] Furthermore, the extending direction of the reinforcing connector 16 is parallel to the insertion direction of the insertion boss 14, and the insertion boss 14 has a slot 141 corresponding to the reinforcing connector 16. When the insertion boss 14 of one of two adjacent housing bodies 1 is inserted into the insertion space 15 of the other housing body 1, the reinforcing connector 16 in the insertion space 15 is inserted into the slot 141 of the corresponding insertion boss 14. This reinforcing connector 16 can prevent the two housing bodies 1 from shaking and misaligning after they are inserted, thus ensuring the relative fixation of the two housing bodies 1.

[0060] Preferably, a buffer 142 is provided at the opening of the slot 141 of the insertion boss 14. The buffer 142 can prevent damage caused by collision when the reinforcing connectors 16 of two adjacent housing bodies 1 are inserted into the slot 141, and plays a protective role for the reinforcing connectors 16. The buffer pad can be made of materials such as rubber or silicone.

[0061] This embodiment also provides an energy storage system, which includes a battery module and a stacked housing structure provided in this embodiment. The top of the housing body 1 has an opening, through which the battery module is housed. The opening is sealed by the bottom of the housing body 1 located on the upper layer. In other words, the housing body 1 on the upper layer covers the opening of the housing body 1 on the lower layer, so that the housing body 1 on the upper layer can achieve the same function as a top cover for the housing body 1 on the lower layer. This eliminates the need for an additional top cover to seal the opening, simplifies the structure, reduces the number of parts, and reduces both weight and cost.

[0062] Obviously, the above embodiments of this utility model are merely examples for clearly illustrating the present utility model, and are not intended to limit the implementation of the present utility model. Those skilled in the art can make other variations or modifications based on the above description. It is neither necessary nor possible to exhaustively list all possible implementations here. Any modifications, equivalent substitutions, and improvements made within the spirit and principles of this utility model should be included within the protection scope of the claims of this utility model.

Claims

1. A box-stacking structure, characterized in that, include: The main body (1) of the box is stacked on top of each other. One of two adjacent main bodies (1) is provided with an extension connector (13), and the other is provided with a plug-in boss (14). The two adjacent main bodies (1) are connected and relatively fixed by the plug-in cooperation of the extension connector (13) and the plug-in boss (14). The extension connector (13) includes an extension part (131) and a limiting part (132) connected at an angle. The extension part (131) is away from the box body. One end of the limiting part (132) is connected to the side of the box body (1). The limiting part (132) extends toward the insertion boss (14) of the adjacent box body (1). An insertion space (15) is formed between the box body (1), the extension part (131) and the limiting part (132). The insertion boss (14) of the adjacent box body (1) can be inserted into the insertion space (15). The shape of the insertion boss (14) matches the shape of the insertion space (15). The locking assembly secures the insertion boss (14) to the extension (131) and the limiting part (132) respectively.

2. The box stacking structure according to claim 1, characterized in that, The upper box body (1) of two adjacent box bodies (1) is provided with the extension connector (13) at the bottom, and the lower box body (1) is provided with the insertion boss (14) at the top.

3. The box stacking structure according to claim 2, characterized in that, The extension connector (13) is provided at least at the bottom of the two opposite side plates (11) of the main body of the box (1). The extension (131) is connected to the side plate (11) of the main body of the box (1) and extends in a direction away from the main body of the box (1). The extension (131) and the side plate (11) of the main body of the box (1) are arranged at an angle.

4. The box stacking structure according to claim 3, characterized in that, Along the direction close to the main body (1) of the box, the thickness of the extension (131) gradually increases.

5. The box stacking structure according to claim 1, characterized in that, The extension (131) is perpendicular to the limiting part (132).

6. The box stacking structure according to any one of claims 1-5, characterized in that, The locking assembly includes a first locking member and a second locking member. The extension (131) and the insertion boss (14) are fastened together by the first locking member, and the limiting part (132) and the insertion boss (14) are fastened together by the second locking member.

7. The box stacking structure according to claim 6, characterized in that, The extension connector (13) extends along the length and / or width of the main body (1), and a plurality of first locking members and a plurality of second locking members are staggered along the length of the extension connector (13).

8. The box stacking structure according to claim 7, characterized in that, The arrangement density of the locking components at both ends of the extension connector (13) is less than the arrangement density of the locking components in the middle of the extension connector (13).

9. The box stacking structure according to any one of claims 1-5, characterized in that, The main body of the box (1) also includes a reinforcing connector (16), which is disposed in the insertion space (15) and connected between at least two of the limiting part (132), the extension part (131) and the side of the main body of the box (1). The extension direction of the reinforcing connector (16) is parallel to the insertion direction of the insertion boss (14). The insertion boss (14) is provided with a slot (141) corresponding to the reinforcing connector (16). When the insertion boss (14) of one of the two adjacent main bodies of the box (1) is inserted into the insertion space (15) of the other main body of the box (1), the reinforcing connector (16) in the insertion space (15) is inserted into the slot (141) of the corresponding insertion boss (14).

10. An energy storage system, characterized in that, Includes a battery module and a stacked housing structure as described in any one of claims 1-9, wherein the top of the housing body (1) has an opening, the battery module is accommodated within the housing body (1) through the opening, and the opening is sealed by the bottom of the housing body (1) located on the upper layer.

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