Housing assembly and energy storage device

Abstract

This application relates to the field of energy storage technology, and discloses a housing assembly and an energy storage device. The housing assembly includes an upper shell and a lower shell that are joined in a first direction, forming a receiving cavity and an opening. A first mounting groove is formed at the edge of the upper shell. A first fixing bracket is mounted on the upper shell and is at least partially embedded in the first mounting groove, with a mating protrusion at one end of the first fixing bracket. A second mounting groove is formed at the edge of the lower shell. A second fixing bracket is mounted on the lower shell and is at least partially embedded in the second mounting groove, with a mating groove at one end of the second fixing bracket. When the upper shell and the lower shell are joined, the mating protrusion and the mating groove abut against each other in the first direction. A first side plate is connected to the housing, the first fixing bracket, and the second fixing bracket, and the first side plate covers the opening. The split structure can reduce the volume of the first fixing bracket and the second fixing bracket individually, which is not only easier to manufacture, but also less prone to deformation, which helps to reduce the manufacturing difficulty of both and improve the production yield.

Description

Technical Field

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

[0002] Energy storage devices are instruments capable of storing and releasing electrical energy, playing a vital role in outdoor activities, emergency rescue, and other scenarios. Energy storage devices typically consist of a housing, and battery and circuit board assemblies housed within the housing. The housing protects the battery and circuit board assemblies; therefore, the structural strength and ease of assembly of the housing are key considerations during the manufacturing process. The housing comprises a main frame and side panels, with the main frame consisting of a mating upper and lower shell.

[0003] Currently, the casings of energy storage devices on the market are directly connected to the upper and lower casings during the assembly process using integral / long strip-type fixing frames. However, the integral / long strip-type fixing frames are large in length and volume, making them difficult to manufacture and prone to deformation, resulting in a low yield rate. During assembly, the large-volume fixing frames need to be precisely positioned and connected with the main frame and side panels, making assembly difficult. Utility Model Content

[0004] This application provides a housing assembly and an energy storage device. The housing assembly adopts a segmented splicing structure of a first fixing frame and a second fixing frame. Under the premise of ensuring the structural strength of the housing assembly, the smaller size of the first fixing frame and the second fixing frame is not only easy to manufacture, but also not easily deformed, which helps to reduce manufacturing difficulty and improve production yield. Furthermore, the smaller size of the first fixing frame and the second fixing frame makes it easier to assemble with the housing and the first side plate, and facilitates installation.

[0005] This application provides a housing assembly, including a housing, a first fixing bracket, a second fixing bracket, and a first side plate. The housing includes an upper shell and a lower shell that are joined together in a first direction, forming a receiving cavity and an opening communicating with the outside. A first mounting groove is formed at the edge of the upper shell defining the opening. The first fixing bracket is disposed on the upper shell and is at least partially embedded in the first mounting groove, with one end of the first fixing bracket having a mating protrusion. A second mounting groove is formed at the edge of the lower shell defining the opening. The second fixing bracket is disposed on the lower shell and is at least partially embedded in the second mounting groove, with one end of the second fixing bracket having a mating groove. When the upper shell and the lower shell are joined, the mating protrusion and the mating groove abut against each other in the first direction. The first side plate is connected to the housing, the first fixing bracket, and the second fixing bracket, and the first side plate covers the opening of the receiving cavity.

[0006] In some embodiments, in a first direction, the first fixing frame includes a first end and a second end, the first end extends beyond the upper shell in the direction toward the lower shell, and a mating protrusion is disposed at the first end; in the first direction, the second fixing frame includes a third end and a fourth end, the third end retracts into the lower shell in the direction away from the upper shell, and a mating groove is disposed at the third end; when the first end and the third end abut and connect, the first end is connected to the lower shell.

[0007] In some embodiments, the inner wall of the first mounting groove is provided with a first limiting rib extending in a first direction, and the surface of the first fixing frame is provided with a first limiting groove extending in a first direction, and the first limiting rib is inserted into the first limiting groove; and / or, the inner wall of the second mounting groove is provided with a second limiting rib extending in a first direction, and the surface of the second fixing frame is provided with a second limiting groove extending in a first direction, and the second limiting rib is inserted into the second limiting groove.

[0008] In some embodiments, the first fixing bracket is provided with at least one first threaded portion that protrudes away from the first fixing bracket along a second direction, the second direction being perpendicular to the first direction; when the first fixing bracket is embedded in the first mounting groove, the first threaded portion is exposed outside the first mounting groove; each first threaded portion is provided with a first assembly hole.

[0009] In some embodiments, the second fixing bracket is provided with at least one second threaded portion protruding in a second direction away from the direction of the second fixing bracket; when the second fixing bracket is embedded in the second mounting groove, the second threaded portion is exposed outside the second mounting groove; each second threaded portion is provided with a second mounting hole, and the first mounting hole and the second mounting hole are arranged in a row along the first direction.

[0010] In some embodiments, the housing assembly further includes a first fastener, and a plurality of first through holes are provided on the first side plate arranged in a row along a first direction. The first through holes are provided in a one-to-one correspondence with the first mounting holes and the second mounting holes. The first fastener passes through the first through hole and is placed in the first mounting hole or the second mounting hole.

[0011] In some embodiments, a first U-shaped opening is provided at the edge of the upper shell, and a second U-shaped opening is provided at the edge of the lower shell. When the upper shell and the lower shell are connected, the first U-shaped opening and the second U-shaped opening are connected to form a cavity. A first mounting groove is provided at the edge of the upper shell where the first U-shaped opening is provided, and a second mounting groove is provided at the edge of the lower shell where the second U-shaped opening is provided.

[0012] In some embodiments, at least one third threaded portion distributed along a second direction is provided at the edge of the upper shell where the first U-shaped opening is provided, and a third mounting hole is provided on each third threaded portion. A second through hole corresponding to each third mounting hole is also provided on the first side plate. A second through hole and a third mounting hole are connected by a second fastener. And / or, at least one fourth threaded portion distributed along a second direction is provided at the edge of the lower shell where the second U-shaped opening is provided, and a fourth mounting hole is provided on each fourth threaded portion. A third through hole corresponding to each fourth mounting hole is also provided on the first side plate. A third through hole and a fourth mounting hole are connected by a third fastener.

[0013] In some embodiments, each of the four corners of the upper shell is provided with a first connecting structure extending along a first direction, the first connecting structure including a first connecting post and a first connecting groove connected adjacent to each other; each of the four corners of the lower shell is provided with a second connecting structure extending along the first direction, the second connecting structure including a second connecting post and a second connecting groove connected adjacent to each other; when the upper shell and the lower shell are connected, the first connecting post and the second connecting groove are interlocked, and the first connecting groove and the second connecting post are interlocked; the shell assembly also includes a fourth fastener, the fourth fastener being used to lock the first connecting post and the second connecting groove, and / or, the fourth fastener being used to lock the first connecting groove and the second connecting post.

[0014] In this embodiment, the housing assembly adopts a split first and second fixing frame. Compared with an integral or one-piece fixing frame structure, the split structure can reduce the volume of the first and second fixing frames individually. Under the premise of ensuring the structural strength of the housing assembly, the smaller first and second fixing frames are not only easier to manufacture, but also less prone to deformation, which helps to reduce the manufacturing difficulty and improve the production yield. At the same time, the first fixing frame is connected to the upper shell and the second fixing frame is connected to the lower shell, which facilitates the docking connection of the upper and lower shells in the first direction and avoids the difficulty of alignment and insertion due to the excessive length of the fixing frame. Attached Figure Description

[0015] To more clearly illustrate the technical solutions in the specific embodiments of this application, the accompanying drawings used in the description of the specific embodiments will be briefly introduced below. In all the drawings, similar elements or parts are generally identified by similar reference numerals. In the drawings, the elements or parts are not necessarily drawn to scale.

[0016] Figure 1 This is an exploded view of the housing assembly according to an embodiment of this application; Figure 2 This is another exploded view of the housing assembly according to an embodiment of this application; Figure 3 This is a schematic diagram of the first and second fixing frames of the housing assembly according to an embodiment of this application; Figure 4 This is a schematic diagram of the upper shell of the housing assembly according to an embodiment of this application; Figure 5 This is a schematic diagram of the lower shell of the housing assembly according to an embodiment of this application; Figure 6 This is a schematic diagram of the housing assembly in an embodiment of this application, omitting the first and second side plates; Figure 7 This is a schematic diagram of the first side plate in the housing assembly of an embodiment of this application; The reference numerals in the detailed embodiments are as follows: 100. Housing assembly; X, first direction; Y, second direction; Z, third direction; 10. Housing; 11. Upper shell; 111. First mounting groove; 112. First through hole; 113. First limiting rib; 114. Third threaded connection; 114a. Third assembly hole; 115. First connecting structure; 1151. First connecting post; 1152. First connecting groove; 12. Lower shell; 121. Second mounting groove; 122. Second through hole; 123. Second limiting rib; 124. Fourth threaded connection; 124a. Fourth assembly hole; 125. Second connecting structure; 1251. Second connecting post; 1252. Second connecting groove; 13. Receiving cavity; 131. Cavity opening; 131a. First U-shaped opening; 131b. Second U-shaped opening; 132. First side portion; 133. Second side portion; 20. First fixing bracket; 21. First end; 211. Interlocking protrusion; 22. Second end; 23. First screw connection; 23a. First mounting hole; 24. First limiting groove; 30. Second fixing bracket; 31. Third end; 311. Interlocking groove; 32. Fourth end; 33. Second screw connection; 33a. Second assembly hole; 34. Second limiting groove; 40. First side plate; 41. First through hole; 42. Second through hole; 43. Third through hole; 50. Second side panel. Detailed Implementation

[0017] To facilitate understanding of this application, a more detailed description is provided below with reference to the accompanying drawings and specific embodiments. It should be noted that when an element is described as "fixed to" another element, it can be directly on the other element, or one or more intermediate elements may exist between them. When an element is described as "connected" to another element, it can be directly connected to the other element, or one or more intermediate elements may exist between them. The terms "upper," "lower," "inner," "outer," "vertical," "horizontal," etc., used in this specification indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings, and are only for the convenience of describing this application and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of this application. Furthermore, the terms "first," "second," etc., are used for descriptive purposes only and should not be construed as indicating or implying relative importance.

[0018] Unless otherwise defined, all technical and scientific terms used in this specification have the same meaning as commonly understood by one of ordinary skill in the art to which this application belongs. The terminology used in this specification is for the purpose of describing particular embodiments only and is not intended to limit the scope of the application. The term "and / or" as used in this specification includes any and all combinations of one or more of the associated listed items.

[0019] Furthermore, the technical features involved in the different embodiments of this application described below can be combined with each other as long as they do not conflict with each other.

[0020] Please see Figures 1 to 5 This application provides a housing assembly 100, which, for ease of description, is defined as having a first direction X, a second direction Y, and a third direction Z that are perpendicular to each other. The housing assembly 100 includes a housing 10, a first fixing frame 20, a second fixing frame 30, and a first side plate 40. The housing 10 includes an upper shell 11 and a lower shell 12 that are joined together in the first direction X. The upper shell 11 and the lower shell 12 enclose a receiving cavity 13 and an opening 131 that connects the receiving cavity 13 to the outside. The receiving cavity 13 is used to receive structures such as battery components and circuit board components. The opening 131 is used for assembly workers or robotic arms to assemble the aforementioned battery components and other components into the receiving cavity 13. The first side plate 40 is used to cover the opening 131 to close the receiving cavity 13.

[0021] The upper shell 11 is provided with a first mounting groove 111 extending in the first direction X at the edge of the defining cavity 131. The first fixing bracket 20 is used to be mounted on the upper shell 11 and is at least distributed and embedded in the first mounting groove 111. One end of the first fixing bracket 20 is provided with a mating protrusion 211.

[0022] The lower shell 12 has a second mounting groove 121 extending along the first direction X at the edge of the defining cavity 131. The second fixing member 30 is used to be mounted on the lower shell 12 and is at least distributed and embedded in the second mounting groove 121. One end of the second fixing bracket 30 is provided with a mating groove 311. When the upper shell 11 and the lower shell 12 are mated in the first direction X, the mating protrusion 211 and the mating groove 311 are inserted in the first direction X, so that the first fixing bracket 20 and the second fixing bracket 30 are locked to each other.

[0023] In this embodiment, the housing assembly 100 adopts a split first fixing frame 20 and a second fixing frame 30. Compared with an integral or one-piece fixing frame structure, the split structure can reduce the volume of the first fixing frame 20 and the second fixing frame 30. Under the premise of ensuring the structural strength of the housing assembly 100, the smaller first fixing frame 20 and the second fixing frame 30 are not only easier to manufacture, but also less prone to deformation, which helps to reduce the manufacturing difficulty and improve the production yield. At the same time, the first fixing frame 20 is connected to the upper shell 11, and the second fixing frame 30 is connected to the lower shell 12. This facilitates the docking connection of the upper shell 11 and the lower shell 12 in the first direction X, and avoids the difficulty of alignment and insertion due to the excessive length of the fixing frame.

[0024] In some embodiments, please refer to Figure 2 and Figure 3 One of the first end 21 and the third end 31 is provided with an interlocking protrusion 211, and the other is provided with an interlocking groove 311. The interlocking protrusion 211 and the interlocking groove 311 are interlocked. On the one hand, the interlocking groove 311 guides the interlocking protrusion 211, facilitating the interlocking of the first end 21 and the third end 31, thereby facilitating the interlocking connection of the upper shell 11 and the lower shell 12. On the other hand, the interlocking of the interlocking protrusion 211 and the interlocking groove 311 helps to connect and fix the first fixing frame 20 and the second fixing frame 30. In the second direction Y and the third direction Z, they can play a mutual limiting role, reducing the probability of loosening at their ends. As an example, the first end 21 is provided with an interlocking protrusion 211, and the third end 31 is provided with an interlocking groove 311. Alternatively, the first end 21 is provided with an interlocking groove 311, and the third end 31 is provided with an interlocking protrusion 211.

[0025] In some embodiments, please refer to Figure 1 The housing assembly 100 also includes a second side plate 50, which and the first side plate 40 are disposed opposite each other on both sides of the housing 10 in the third direction Z. One of the first side plate 40 and the second side plate 50 is a front cover, and the other is a rear cover. For ease of description, the following description uses the first side plate 40 as an example of a rear cover.

[0026] In some embodiments, please refer to Figure 4 and Figure 5The upper shell 11 is provided with a first mounting groove 111 extending along the first direction X. At least a portion of the first fixing bracket 20 is fixed within the first mounting groove 111. The first mounting groove 111 on the upper shell 11 facilitates the installation of the first fixing bracket 20, and the first mounting groove 111 has a limiting and fixing function for the first fixing bracket 20. And / or, the lower shell 12 is provided with a second mounting groove 121 extending along the first direction X. At least a portion of the second fixing bracket 30 is fixed within the second mounting groove 121. The second mounting groove 121 on the lower shell 12 facilitates the installation of the second fixing bracket 30, and the second mounting groove 121 has a limiting and fixing function for the second fixing bracket 30.

[0027] It is understood that the first fixing bracket 20 can be installed in the first mounting slot 111 through various methods such as screwing, snap-fitting, bonding, or interference fit, thereby fixing the first fixing bracket 20 to the upper shell 11. In a preferred embodiment, the first fixing bracket 20 and the upper shell 11 are detachably connected to facilitate later disassembly and maintenance and reduce disassembly difficulty. Similarly, the second fixing bracket 30 can be installed in the second mounting slot 121 through various methods such as screwing, snap-fitting, bonding, or interference fit, thereby fixing the second fixing bracket 30 to the lower shell 12. In a preferred embodiment, the second fixing bracket 30 and the lower shell 12 are detachably connected to facilitate later disassembly and maintenance and reduce disassembly difficulty.

[0028] In some embodiments, please refer to Figures 4 to 6 The upper shell 11 is provided with a first through hole 112 communicating with the first mounting groove 111. The shell assembly 100 also includes a first locking member (not shown), which passes through the first through hole 112 to connect the upper shell 11 and the first fixing bracket 20; and / or, the lower shell 12 is provided with a second through hole 122 communicating with the second mounting groove 121. The shell assembly 100 also includes a second locking member (not shown), which passes through the second through hole 122 to connect the lower shell 12 and the second fixing bracket 30. As an example, both the first locking member and the second locking member are self-tapping screws, which fix the first fixing bracket 20 in the first mounting groove 111 and the second fixing bracket 30 in the second mounting groove 121 by screwing, which facilitates repeated disassembly and assembly in the future.

[0029] In some embodiments, the first fixing bracket 20 may be connected only to the upper shell 11, or it may be connected to both the upper shell 11 and the lower shell 12. Similarly, the second fixing bracket 30 may be connected only to the lower shell 12, or it may be connected to both the upper shell 11 and the lower shell 12. In embodiments where the first fixing bracket 20 is connected to both the upper shell 11 and the lower shell 12, and / or in embodiments where the second fixing bracket 30 is connected to both the upper shell 11 and the lower shell 12, the first fixing bracket 20 and the second fixing bracket 30 may have a limiting function in the direction perpendicular to the insertion of the upper shell 11 and the lower shell 12, which helps to further improve the connection strength of the upper shell 11 and the lower shell 12.

[0030] In some embodiments, please refer to Figure 2 and Figure 3 In the first direction X, the first fixing bracket 20 includes a first end 21 and a second end 22, the first end 21 being closer to the lower shell 12 than the second end 22. The first end 21 extends beyond the upper shell 11 in the direction toward the lower shell 12, that is, in the first direction X, the first fixing bracket 20 protrudes relative to the upper shell 11. A mating protrusion 211 is provided on the first end 21.

[0031] In the first direction X, the second fixing bracket 30 includes a third end 31 and a fourth end 32, which are opposite each other. The third end 31 is closer to the upper shell 11 than the fourth end 32. The third end 31 is retracted into the lower shell 12 in a direction away from the upper shell 11. That is, in the first direction X, the second fixing bracket 30 is recessed relative to the lower shell 12, and the mating groove 311 is provided at the third end 31. When the upper shell 11 and the lower shell 12 are mated in the first direction X, the first end 21 and the third end 31 abut against each other, and the mating protrusion 211 and the mating groove 311 are interlocked. At this time, the first end 21 of the first fixing bracket 20 is inserted into the lower shell 12, so that the first fixing bracket 20 connects the upper shell 11 and the lower shell 12 simultaneously, thereby further strengthening the structural strength of the assembled shell 10.

[0032] In other embodiments, the first fixing bracket 20 may retract into the upper shell 11 in the first direction X, and the third end 31 of the second fixing bracket 30 may protrude from the lower shell 12 in the first direction X. When the upper shell 11 and the lower shell 12 are inserted into each other in the first direction X, the first end 21 and the third end 31 abut against each other, and the insertion protrusion 211 and the insertion groove 311 are inserted into each other. At this time, the third end 31 of the second fixing bracket 30 is inserted into the upper shell 11, so that the second fixing bracket 30 connects the upper shell 11 and the lower shell 12 at the same time, thereby further strengthening the structural strength of the shell 10 after assembly.

[0033] In some embodiments, please refer to Figures 3 to 5The inner wall of the first mounting groove 111 is provided with a first limiting rib 113 extending along the first direction X, and the surface of the first fixing frame 20 is provided with a first limiting groove 24 extending along the first direction X. The first limiting rib 113 is inserted into the first limiting groove 24. The inner wall of the first mounting groove 111 limits the first fixing frame 20 in the third direction Z, and the first limiting rib 113 limits the first fixing frame 20 in the second direction Y. Before being locked by the first locking member, the first fixing frame 20 can only move within the first mounting groove 111 along the first direction X.

[0034] In some embodiments, the inner wall of the second mounting groove 121 is provided with a second limiting rib 123 extending along the first direction X, and the surface of the second fixing frame 30 is provided with a second limiting groove 34 extending along the first direction X. The second limiting rib 123 is inserted into the second limiting groove 34. The inner wall of the second mounting groove 121 limits the second fixing frame 30 in the third direction Z, and the second limiting rib 123 limits the second fixing frame 30 in the second direction Y. Before being locked by the second locking member, the second fixing frame 30 can only move within the second mounting groove 121 along the first direction X.

[0035] In some embodiments, please refer to Figures 3 to 6 The first fixing bracket 20 is provided with at least one first threaded portion 23 that protrudes away from the first fixing bracket 20 along the second direction Y. When the first fixing bracket 20 is embedded in the first mounting groove 111, the first threaded portion 23 is exposed outside the first mounting groove 111; each first threaded portion 23 is provided with a first mounting hole 23a.

[0036] The second fixing bracket 30 is provided with at least one second threaded portion 33 that protrudes away from the second fixing bracket 30 along the second direction Y. When the second fixing bracket 30 is embedded in the second mounting groove 121, the second threaded portion 33 is exposed outside the second mounting groove 121; each second threaded portion 33 is provided with a second mounting hole 33a, and the first mounting hole 23a and the second mounting hole 33a are arranged in a row along the first direction X.

[0037] The housing assembly 100 also includes a plurality of first fasteners (not shown in the figure), please refer to Figure 7 The first side plate 40 has a plurality of first through holes 41 arranged in a row along the first direction X. The plurality of first through holes 41 arranged in a row correspond one-to-one with the first assembly holes 23a and the second assembly holes 33a arranged in a row. After passing through the first through holes 41, the first fastener is connected to the first assembly hole 23a or the second assembly hole 33a, thereby realizing the connection and fixation of the first side plate 40 with the first fixing frame 20 and the second fixing frame 30 to cover the cavity 131.

[0038] As an example, the first end 21 of the first fixing bracket 20 is provided with a first threaded portion 23, the second end 22 is provided with a first threaded portion 23, and the fourth end 32 of the second fixing bracket 30 is provided with a second threaded portion 33. The first fastener can be a self-tapping screw, bolt, etc.

[0039] In some embodiments, please refer to Figure 2 The upper shell 11 has a first U-shaped opening 131a at its edge, and the lower shell 12 has a second U-shaped opening 131b at its edge. When the upper shell 11 and the lower shell 12 are joined, the first U-shaped opening 131a and the second U-shaped opening 131b are joined to form a cavity 131. A first mounting groove 111 is formed at the edge of the upper shell 11 where the first U-shaped opening 131a is provided and in the second direction Y; a second mounting groove 121 is formed at the edge of the lower shell 12 where the second U-shaped opening 131b is provided and in the second direction Y. The first mounting groove 111 and the second mounting groove 121 are provided on the same side, which facilitates the installation of a first fixing bracket 20 and a second fixing bracket 30 on the sides of the upper shell 11 and the lower shell 12, thereby fixing the first side plate 40 to the upper shell 11 and the lower shell 12 on the side.

[0040] In some embodiments, please refer to Figure 2 , Figure 6 and Figure 7 At the edge of the upper shell 11 where the first U-shaped opening 131a is provided, at least one third threaded portion 114 distributed along the second direction Y is provided. Each third threaded portion 114 is provided with a third assembly hole 114a. The first side plate 40 is also provided with a second through hole 42 corresponding to the third assembly hole 114a. The second through hole 42 and the third assembly hole 114a are connected by a second fastener.

[0041] In some embodiments, at least one fourth threaded portion 124 distributed along the second direction Y is provided at the edge of the second U-shaped opening 131b of the lower shell 12. Each fourth threaded portion 124 has a fourth mounting hole 124a. The first side plate 40 also has a third through hole 43 corresponding to the fourth mounting hole 124a. The third through hole 43 and the fourth mounting hole 124a are connected by a third fastener. This allows the first side plate 40 to be directly fixedly connected to the upper shell 11 and the lower shell 12 in the second direction Y, thereby achieving connection and fixation of the first side plate 40 to the shell 10 in both the first direction X and the second direction Y, enhancing the structural strength.

[0042] In some embodiments, please refer to Figure 6Along the second direction Y, the cavity opening 131 of the receiving cavity 13 has a first side portion 132 and a second side portion 133. The upper shell 11 is also provided with a first mounting groove 111 on the second side portion 133, and the lower shell 12 is also provided with a second mounting groove 121 on the second side. The detailed structure can be referred to the structure of the first mounting groove 111 and the second mounting groove 121 on the first side portion 132, which will not be repeated here.

[0043] There are two first fixing brackets 20 and two second fixing brackets 30. One first fixing bracket 20 and one second fixing bracket 30 are disposed on the first side 132, and the other first fixing bracket 20 and the other second fixing bracket 30 are disposed on the second side 133. In the first direction X, the two first fixing brackets 20 and the two second fixing brackets 30 are disposed on the same side, or the two first fixing brackets 20 and the two second fixing brackets 30 are disposed diagonally. By providing first fixing brackets 20 and second fixing brackets 30 on both the first side 132 and the second side 133, the connection strength of the first side plate 40 can be further strengthened. Furthermore, by flipping the first fixing brackets 20 and the second fixing brackets 30, the number of manufacturing molds can be reduced, thus lowering production and development costs.

[0044] In some embodiments, please refer to Figure 4 and Figure 5 Each of the four corners of the upper shell 11 is provided with a first connecting structure 115 extending along the first direction X. The first connecting structure 115 includes a first connecting post 1151 and a first connecting groove 1152 connected adjacently. Each of the four corners of the lower shell 12 is provided with a second connecting structure 125 extending along the first direction X. The second connecting structure 125 includes a second connecting post 1251 and a second connecting groove 1252 connected adjacently. When the upper shell 11 and the lower shell 12 are connected, the first connecting post 1151 and the second connecting groove 1252 are interlocked, and the first connecting groove 1152 and the second connecting post 1251 are interlocked.

[0045] By setting the first connecting structure 115 and the second connecting structure 125 at the corner, it is possible to facilitate the docking of the upper shell 11 and the lower shell 12 in the first direction X and to quickly position and insert them; on the other hand, it can enhance the structural strength of the upper shell 11 and the lower shell 12 at the corner and enhance the overall drop and impact resistance of the shell assembly 100.

[0046] In some embodiments, the housing assembly 100 further includes a fourth fastener for locking the first connecting post 1151 and the second connecting groove 1252, and / or, the fourth fastener for locking the first connecting groove 1152 and the second connecting post 1251. Further securing with the fourth fastener can further enhance the robustness of the connection between the upper housing 11 and the lower housing 12.

[0047] It is worth noting that during the injection molding process, because the first connecting structure 115 and the second connecting structure 125 need to be manufactured in the upper shell 11 and the lower shell 12, it is impossible to directly injection mold the third threaded part 114 and the fourth threaded part 124 onto the first side 132 and the second side 133 of the shell 10. Even if direct injection molding were possible, the mold design would be extremely complex, the mold development cost would be high, and the manufacturing difficulty would be extremely high. Therefore, the first side 132 and the second side 133 of the shell 10 need to be connected to the upper shell 11 and the lower shell 12 by assembly through additionally manufactured first fixing brackets 20 and second fixing brackets 30. Setting the first threaded part 23 on the first fixing bracket 20 and the second threaded part 33 on the second fixing bracket 30 is much simpler, the mold structure is simpler, easier to manufacture, and the development cost is lower.

[0048] This application also provides an energy storage device, which includes a housing assembly 100, a battery cell assembly, and a control assembly. The battery cell assembly and the control assembly are disposed within a receiving cavity 13 of the housing assembly 100. The control assembly is used to control the charging and discharging of the battery cell assembly. For the specific structure and function of the housing assembly 100, please refer to the above embodiments, which will not be repeated here.

[0049] The above description is merely an embodiment of this application and does not limit the patent scope of this application. Any equivalent structural or procedural transformations made using the content of this application's specification and drawings, or direct or indirect applications in other related technical fields, are similarly included within the patent protection scope of this application.

Claims

1. A housing assembly, characterized in that, include: The housing includes an upper shell and a lower shell that are joined in a first direction, the upper shell and the lower shell enclosing a receiving cavity and an opening communicating with the receiving cavity and the outside; The first mounting groove is formed at the edge of the upper shell that defines the cavity opening; A first fixing bracket is provided on the upper shell and is at least distributed and embedded in the first mounting groove. One end of the first fixing bracket is provided with a mating protrusion. The second mounting groove is formed at the edge of the lower shell that defines the cavity opening; The second fixing bracket is disposed on the lower shell and is at least distributed and embedded in the second mounting groove. One end of the second fixing bracket is provided with a mating groove. When the upper shell and the lower shell are connected, the mating protrusion and the mating groove are used to abut in the first direction. The first side plate is connected to the housing, the first fixing frame and the second fixing frame, and the first side plate covers the opening of the receiving cavity.

2. The housing assembly according to claim 1, characterized in that, In the first direction, the first fixing bracket includes a first end and a second end, the first end extending beyond the upper shell in a direction toward the lower shell, and the interlocking protrusion is disposed at the first end; In the first direction, the second fixing bracket includes a third end and a fourth end. The third end is retracted into the lower shell in a direction away from the upper shell. The interlocking groove is provided at the third end. When the first end and the third end are in contact, the first end is connected to the lower shell.

3. The housing assembly according to claim 1 or 2, characterized in that, The inner wall of the first mounting groove is provided with a first limiting rib extending along the first direction, and the surface of the first fixing frame is provided with a first limiting groove extending along the first direction. The first limiting rib is inserted into the first limiting groove. And / or, The inner wall of the second mounting groove is provided with a second limiting rib extending along the first direction, and the surface of the second fixing frame is provided with a second limiting groove extending along the first direction. The second limiting rib is inserted into the second limiting groove.

4. The housing assembly according to claim 3, characterized in that, The first fixing frame is provided with at least one first screw connection portion that is opposite to the protrusion of the first fixing frame along a second direction, and the second direction is perpendicular to the first direction; When the first fixing bracket is embedded in the first mounting groove, the first screw connection is exposed outside the first mounting groove; each of the first screw connections is provided with a first assembly hole.

5. The housing assembly according to claim 4, characterized in that, The second fixing frame is provided with at least one second screw connection portion that protrudes in the second direction away from the direction of the second fixing frame; When the second fixing bracket is embedded in the second mounting groove, the second screw connection is exposed outside the second mounting groove; each of the second screw connections is provided with a second mounting hole, and the first mounting hole and the second mounting hole are arranged in a row along the first direction.

6. The housing assembly according to claim 5, characterized in that, The housing assembly further includes a first fastener. The first side plate has a plurality of first through holes arranged in a row along a first direction. The first through holes are configured to correspond one-to-one with the first mounting holes and the second mounting holes. The first fastener passes through the first through hole and is placed in the first mounting hole or the second mounting hole.

7. The housing assembly according to claim 1, characterized in that, The upper shell has a first U-shaped opening at its edge, and the lower shell has a second U-shaped opening at its edge. When the upper shell and the lower shell are joined together, the first U-shaped opening and the second U-shaped opening are joined together to form the cavity. The first mounting groove is formed at the edge of the upper shell where the first U-shaped opening is provided; The second mounting groove is formed at the edge of the lower shell where the second U-shaped opening is located.

8. The housing assembly according to claim 7, characterized in that, At the edge of the upper shell where the first U-shaped opening is provided, at least one third threaded part is provided along the second direction. Each of the third threaded parts is provided with a third assembly hole. The first side plate is also provided with a second through hole that corresponds to the third assembly hole. A second through hole and a third assembly hole are connected by a second fastener. And / or, At least one fourth threaded portion is provided at the edge of the second U-shaped opening on the lower shell, which is distributed along the second direction. Each fourth threaded portion is provided with a fourth assembly hole. The first side plate is also provided with a third through hole that corresponds to the fourth assembly hole. The third through hole and the fourth assembly hole are connected by a third fastener.

9. The housing assembly according to claim 1, characterized in that, Each of the four corners of the upper shell is provided with a first connecting structure extending along a first direction. The first connecting structure includes a first connecting post and a first connecting groove that are connected adjacent to each other. The lower shell is provided with a second connecting structure extending along the first direction at each of its four corners. The second connecting structure includes a second connecting post and a second connecting groove that are connected adjacent to each other. When the upper shell is connected to the lower shell, the first connecting post and the second connecting slot are inserted into each other, and the first connecting slot and the second connecting post are inserted into each other. The housing assembly further includes a fourth fastener for locking the first connecting post and the second connecting groove, and / or the fourth fastener for locking the first connecting groove and the second connecting post.

10. An energy storage device, characterized in that, Includes the housing assembly as described in any one of claims 1 to 9.

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