Housing assembly, energy storage device, and energy storage system

Abstract

A housing assembly (2), an energy storage device, and an energy storage system. The housing assembly (2) is adapted to define an accommodating space, and the housing assembly (2) comprises: a first housing (21); and a first reinforcing structure, the first reinforcing structure being provided on an outer wall of the first housing (21), where the outer wall of the first housing (21) is the surface of the side of the first housing (21) facing away from the accommodating space.

Description

Shell assembly, energy storage device and energy storage system

[0001] CROSS-REFERENCE TO RELATED APPLICATIONS

[0002] This application claims priority to the Chinese patent application filed with the China Patent Office on September 28, 2023, with application number 202322677323.1 and invention name “Shell assembly, energy storage device and energy storage system”, the entire contents of which are incorporated by reference into this application. Technical Field

[0003] The present application relates to the field of power supply technology, and more specifically, to a housing assembly, an energy storage device, and an energy storage system. Background Art

[0004] Energy storage devices are attracting increasing attention due to their flexible applications, high reliability and controllability, and high energy density. In related technologies, energy storage devices typically consist of a battery cell and a housing that holds the cell. The cell is secured within the housing, which, to achieve a lightweight design, is relatively thin and susceptible to deformation.

[0005] Therefore, it is necessary to provide a new technical solution to solve the above technical problems.

[0006] Summary of the Invention

[0007] One object of the present application is to provide a new technical solution for a housing assembly, an energy storage device, and an energy storage system.

[0008] According to a first aspect of the present application, a housing assembly is provided. The housing assembly is adapted to define an accommodating space, and includes:

[0009] a first housing; and

[0010] The first reinforcement structure is arranged on the outer wall of the first shell, and the outer wall of the first shell is the surface of the first shell facing away from the accommodating space.

[0011] Optionally, the first reinforcement structure includes:

[0012] A first reinforcing rib extends along a first direction, where the first direction is used to indicate a length direction of the first shell.

[0013] Optionally, the first reinforcement structure includes:

[0014] The first reinforcing rib extends along a second direction, and the second direction is used to represent a width direction of the first shell.

[0015] Optionally, a plurality of first reinforcing ribs are provided on the outer wall of the first shell, and the number of the first reinforcing ribs provided in the middle area in the first direction of the first shell is greater than the number of the first reinforcing ribs provided in the two side areas in the first direction of the first shell.

[0016] Optionally, the housing assembly further comprises:

[0017] A wall-hanging component is provided on the outer wall of the first shell, and the wall-hanging component is suitable for hanging the first shell on a wall.

[0018] Optionally, the wall-mounted assembly includes:

[0019] A first wall hanging part and a second wall hanging part, wherein the first reinforcement structure is located between the first wall hanging part and the second wall hanging part.

[0020] Optionally, the housing assembly further comprises:

[0021] A fixing frame is arranged on one side of the inner wall of the first shell, and is suitable for carrying functional components.

[0022] Optionally, limiting structures are provided at both ends of the fixing frame, and the limiting structures are suitable for positioning functional components.

[0023] Optionally, the limiting structure is a limiting protrusion formed by folding edges at both ends of the fixing frame.

[0024] Optionally, the housing assembly further comprises:

[0025] A first cover and a second cover are provided, wherein the first cover and the second cover are spaced apart from each other on the inner wall of the first shell.

[0026] Optionally, the shell assembly further includes a first side panel, which is arranged on one side of the inner wall of the first shell, one side edge of the first side panel is connected to the inner wall of the first shell, and the first side panel is connected to the same side end of the first cover body and the second cover body.

[0027] Optionally, the first side plate is provided with a notch, and a projection of a pole of the functional device along the first direction is located within the projection of the notch along the first direction.

[0028] Optionally, the shell assembly also includes a second shell opposite to the first shell, and retaining walls are provided at both ends of the first direction of the second shell. The second shell is arranged on the first shell, and the retaining walls are located in the notch, wherein the first direction is used to indicate the length direction of the first shell.

[0029] Optionally, the housing assembly further includes a second side plate and a third side plate, the second side plate and the third side plate being arranged on one side of the inner wall of the first housing, and the second side plate and the third side plate being connected to the same side end portions of the first cover and the second cover respectively;

[0030] A gap is provided between the second side plate and the third side plate along a second direction, wherein the second direction is used to indicate a width direction of the first shell.

[0031] Optionally, a projection of the pole of the functional device along the first direction is located within a projection of the gap along the first direction.

[0032] Optionally, the shell assembly also includes a second shell opposite to the first shell, and retaining walls are provided at both ends of the first direction of the second shell. The second shell is arranged on the first shell, and the retaining walls are located in the interval space, wherein the first direction is used to indicate the length direction of the first shell.

[0033] Optionally, the housing assembly further includes a decorative cover, which is disposed on an outer wall of the second housing. The outer wall of the second housing is a surface of the second housing facing away from the battery cell.

[0034] Optionally, a second reinforcement structure is provided on the outer wall of the second shell, and the second reinforcement structure is located between the decorative cover and the second shell.

[0035] Optionally, the second reinforcement structure includes a second reinforcement rib, and the second reinforcement rib extends along a second direction, wherein the second direction is used to represent a width direction of the second shell.

[0036] Optionally, sealing strips are provided at edges of the second shell and the first shell.

[0037] Optionally, an insulating frame is fixed on the inner wall of the first shell, an electrical connecting piece is fixed at at least one end of the insulating frame in the first direction, and a welding position is provided at a position of the electrical connecting piece corresponding to the electrode of the battery cell, and the first direction is used to indicate the length direction of the first shell.

[0038] Optionally, at least one of the first cover and the second cover is provided with a handle.

[0039] According to a second aspect of the present application, an energy storage device is provided, which includes any one of the above-mentioned housing assemblies.

[0040] According to a third aspect of the present application, an energy storage device is provided, which includes the above-mentioned housing assembly, wherein the functional device is a battery cell.

[0041] According to a fourth aspect of the present application, an energy storage device is provided. The energy storage device includes a housing assembly and a battery cell, wherein the housing assembly is adapted to define an accommodating space, and the housing assembly includes:

[0042] a first housing; and

[0043] A first reinforcing structure is provided on an outer wall of the first shell, the outer wall of the first shell is a surface of the first shell facing away from the accommodating space, the first reinforcing structure includes a first reinforcing rib, and the first reinforcing rib extends along the arrangement direction of the battery cells.

[0044] According to a fifth aspect of the present application, an energy storage system is provided, comprising an energy storage device and an electrical device, wherein the energy storage device supplies power to the electrical device, and the energy storage device is any one of the energy storage devices described above.

[0045] In the embodiment of the present application, the first reinforcement structure enhances the supporting force of the first shell, thereby avoiding deformation of the first shell caused by excessive weight of the battery cell carried by the first shell, which affects the overall shape of the shell assembly and the stability of the connection.

[0046] In addition, the first reinforcement structure is arranged on the outer wall of the first shell, so as not to occupy the accommodation space, thereby increasing the capacity of the battery cell in the accommodation space. Since the first reinforcement structure is located on the outer wall of the first shell, the first reinforcement structure will not interfere with the functional components.

[0047] Other features and advantages of the present application will become apparent from the following detailed description of exemplary embodiments of the present application with reference to the accompanying drawings. BRIEF DESCRIPTION OF THE DRAWINGS

[0048] The accompanying drawings, which are incorporated in and constitute a part of the specification, illustrate embodiments of the application and, together with the description, serve to explain the principles of the application.

[0049] FIG1 is an exploded view of an energy storage device according to an embodiment of the present application.

[0050] FIG2 is a schematic diagram of a first shell of an energy storage device according to an embodiment of the present application.

[0051] FIG3 is a schematic diagram of the assembly of a first shell and a battery cell of an energy storage device according to an embodiment of the present application.

[0052] FIG4 is a wiring diagram of an energy storage device according to an embodiment of the present application.

[0053] FIG5 is an exploded view of the energy storage device according to an embodiment of the present application from another angle.

[0054] FIG6 is a schematic diagram of another first shell according to an embodiment of the present application.

[0055] Description of reference numerals:

[0056] 1. Battery cell; 2. Shell assembly; 21. First shell; 22. First reinforcement rib; 23. Wall-mounted assembly; 231. First wall-mounted part; 232. Second wall-mounted part; 24. First cover; 25. Second cover; 26a. First side panel; 26b. Second side panel; 26c. Third side panel; 26d. Notch; 26e. Gap; 27. Second shell; 28. Retaining wall; 29. ​​Second reinforcement rib; 3. Fixing frame; 31. Limiting protrusion; 32. Upper bracket; 33. Middle bracket; 34. Lower bracket; 4. Decorative cover; 5. Sealing strip; 6. Insulating frame; 7. Electrical connection piece; 8. Welding position; 9. Handle. Specific embodiments

[0057] Various exemplary embodiments of the present application will now be described in detail with reference to the accompanying drawings. It should be noted that unless otherwise specifically stated, the relative arrangements of components and steps, numerical expressions and numerical values ​​set forth in these embodiments do not limit the scope of the present application.

[0058] The following description of at least one exemplary embodiment is merely illustrative in nature and is in no way intended to limit the present disclosure, its application, or uses.

[0059] Technologies, methods, and equipment known to ordinary technicians in the relevant art may not be discussed in detail, but where appropriate, the technologies, methods, and equipment should be considered part of the specification.

[0060] In all examples shown and discussed herein, any specific values ​​should be interpreted as merely exemplary and not limiting. Therefore, other examples of the exemplary embodiments may have different values.

[0061] It should be noted that like reference numerals and letters refer to like items in the following figures, and therefore, once an item is defined in one figure, it need not be further discussed in subsequent figures.

[0062] One embodiment of the present application provides a housing assembly 2. The housing assembly 2 is adapted to define a housing space. The housing space is adapted to accommodate at least some functional components. The functional components may be, but are not limited to, battery cells 1, circuit boards, heat sinks, and the like. The housing assembly 2 includes a first housing 21 and a first reinforcement structure.

[0063] The first reinforcement structure is disposed on an outer wall of the first shell 21. The outer wall of the first shell 21 is a surface of the first shell 21 that is away from the accommodating space.

[0064] As shown in Figures 1 to 3, the shell assembly 2 is in the shape of a rectangular parallelepiped. Functional devices, such as battery cells 1, are arranged inside the shell assembly 2, and the battery cells 1 are protected by the shell assembly 2. The shell assembly 2 includes a first shell 21 and a first reinforcement structure. Among them, the battery cells 1 are arranged on the inner wall of the first shell 21. The first reinforcement structure is fixed to the outer wall of the first shell 21 by screws. Alternatively, the first reinforcement structure is integrally formed with the first shell 21. The supporting force of the first shell 21 is enhanced by the first reinforcement structure, thereby avoiding deformation of the first shell 21 caused by the excessive weight of the battery cells 1 carried by the first shell 21, which affects the overall shape of the shell assembly 2 and the stability of the connection.

[0065] Furthermore, the first reinforcement structure is disposed on the outer wall of the first housing 21, thereby not occupying the storage space and increasing the capacity of the battery cell 1 within the storage space. Since the first reinforcement structure is located on the outer wall of the first housing 21, it does not interfere with functional components, such as the battery cell 1.

[0066] Of course, in the embodiment of the present application, the housing assembly 2 is not limited to the above structure, and those skilled in the art can configure it according to actual needs. For example, the housing assembly 2 is in the shape of a cylinder, an elliptical cylinder, etc.

[0067] Optionally, the first reinforcement structure includes: a first reinforcement rib 22 , the first reinforcement rib 22 extending along a first direction, and the first direction is used to represent the length direction of the first shell 21 .

[0068] In this example, the first housing 21 is rectangular. The length of the first housing 21 is the direction in which the long sides extend. The first reinforcing ribs 22 extend along the length of the first housing 21. The first reinforcing ribs 22 are made of metal, plastic, ceramic, etc. The first reinforcing ribs 22 are strip-shaped. There are one or more first reinforcing ribs 22. For example, the first reinforcing ribs 22 are secured to the outer wall of the first housing 21 by bolting, riveting, clamping, welding, or the like.

[0069] Alternatively, as shown in FIG. 1 , the first reinforcement structure includes a first reinforcement rib 22 , and the first reinforcement rib 22 extends along a second direction, where the second direction is used to represent a width direction of the first shell 21 .

[0070] The width of the first shell 21 is the direction in which the wide side extends. The length of the first shell 21 is greater than the width of the first shell 21. The first reinforcing ribs 22 extend along the width of the first shell 21. The material, number, and connection method of the first reinforcing ribs 22 are as described above.

[0071] Optionally, as shown in FIG. 1 , the first reinforcing rib 22 extends along the arrangement direction of the battery cells 1 .

[0072] In this example, there are multiple battery cells 1. The multiple battery cells 1 are arranged along the second direction. The extension direction of the first reinforcing rib 22 is consistent with the arrangement direction of the multiple battery cells 1. The length direction of the battery cell 1 is perpendicular to the length direction of the first reinforcing rib 22. This method further enhances the structural strength of the first housing 21.

[0073] Of course, the arrangement of the first reinforcing ribs 22 is not limited to the above embodiment, and those skilled in the art can make a choice according to actual needs.

[0074] Optionally, as shown in Figure 1, multiple first reinforcing ribs 22 are provided on the outer wall of the first shell 21, and the number of the first reinforcing ribs 22 provided in the middle area of ​​the first direction of the first shell 21 is greater than the number of the first reinforcing ribs 22 provided in the two side areas of the first direction of the first shell 21.

[0075] Normally, the middle portion of the first shell 21 is prone to deformation due to carrying excessive weight. The greater the number of first reinforcing ribs 22, the better the reinforcement effect on the portion where the first shell 21 is located. In this example, the number of first reinforcing ribs 22 provided in the middle region of the first shell 21 in the first direction is greater than the number of first reinforcing ribs 22 provided in the two side regions of the first shell 21 in the first direction. For example, three first reinforcing ribs 22 are provided in the middle region, and one first reinforcing rib 22 is provided in each of the two side regions. In this way, the structural strength of the middle region can be effectively strengthened, and the uneven distribution of the first reinforcing ribs 22 can achieve a weight reduction effect.

[0076] Optionally, the shell assembly 2 further includes a wall-hanging assembly 23 , which is disposed on an outer wall of the first shell 21 , and is suitable for hanging the first shell 21 on a wall.

[0077] As shown in Figures 1 to 3, the wall-mounting assembly 23 includes a wall hook. The wall hook is used to cooperate with a wall-mounted component. The wall hook is fixed to the outer wall of the first housing 21 with screws. The wall-mounted component is fixed to the wall with expansion bolts. The wall hook, which is fixedly connected to the first housing 21, is connected to the wall-mounted component on the wall to allow the first housing 21 to be suspended and fixed to the wall. The wall-mounting assembly 23 and the first housing 21 can be integrally formed or assembled in a removable manner.

[0078] In the embodiment of the present application, the first reinforcement structure and the wall-mounted component 23 are both arranged on the outer wall of the first shell 21, so that the two components share one space, reducing space waste and improving space utilization.

[0079] Optionally, the wall-mounted assembly 23 includes a first wall-mounted component 231 and a second wall-mounted component 232 , and the first reinforcement structure is located between the first wall-mounted component 231 and the second wall-mounted component 232 .

[0080] For example, as shown in Figures 1, 2, and 5, a first wall-mounting member 231 and a second wall-mounting member 232 are respectively provided at both ends of the first housing 21 in the longitudinal direction. A plurality of first reinforcing ribs 22 are positioned between the first wall-mounting member 231 and the second wall-mounting member 232. This allows the first wall-mounting member 231 and the second wall-mounting member 232 to be easily visible when the energy storage device is mounted on a wall, thereby facilitating the wall-mounting operation.

[0081] Of course, the arrangement of the wall-mounted component 23 and the first reinforcing rib 22 is not limited to the above embodiment, and those skilled in the art can make arrangements according to actual needs.

[0082] Optionally, the housing assembly 2 includes a fixing frame 3 . The fixing frame 3 is disposed on an inner wall of the first housing 21 , and the fixing frame 3 is suitable for supporting the battery cell 1 .

[0083] In this example, the fixing frame 3 is a frame structure. There are one or more fixing frames 3. The battery cells 1 are directly or indirectly mounted on the fixing frame 3. The fixing frame 3 facilitates the installation of the battery cells 1.

[0084] In addition, the battery cell 1 is indirectly fixed to the first housing 21 via the fixing frame 3. Since the fixing frame 3 is fixedly connected to the first housing 21, the fixing frame 3 can also improve the bearing capacity of the first housing 21.

[0085] Optionally, limiting structures are provided at both ends of the fixing frame 3 , and the limiting structures are suitable for positioning functional components.

[0086] For example, the limiting structure is a protrusion or a groove for positioning the battery cell 1. The limiting structure can effectively position the battery cell 1 and prevent the battery cell 1 from moving on the fixing frame 3.

[0087] Furthermore, the limiting structure is formed by folding the edges at both ends of the fixing frame 3 to form limiting protrusions 31 .

[0088] For example, the fixing frame 3 comprises a metal plate. The metal plate is folded at both ends to form stopper protrusions 31. This method facilitates the production of the stopper protrusions 31 and eliminates the need to connect the stopper protrusions 31 to the fixing frame 3. During installation, the battery cell 1 is secured to the fixing frame 3 and positioned between the two stopper protrusions 31.

[0089] The height of the limiting protrusion 31 is not limited here, and those skilled in the art can set it according to actual needs.

[0090] Optionally, as shown in Figure 2, the fixing frame 3 extends along the length direction of the first shell 21 and is fixed on the inner wall of the first shell 21, so that the battery cell 1 is arranged on the inner wall of the first shell 21 along the length direction. The first reinforcing rib 22 extends along the width direction and is fixed on the outer wall of the first shell 21. In this example, the first reinforcing rib 22 is orthogonal to the fixing frame 3. Compared with the setting method in which the extension direction of the first reinforcing rib 22 is parallel to the extension direction of the fixing frame 3, this method can effectively improve the structural strength of the first shell 21 in different directions. The limiting protrusion 31 on the fixing frame 3 can limit the position of the battery cell 1 to prevent the battery cell 1 from shaking during installation or use and causing damage to the energy storage device.

[0091] Of course, in the embodiment of the present application, the fixing frame 3 and the first reinforcing rib 22 are not limited to being orthogonal, and may also be intersecting at any angle. Those skilled in the art may select the angle of intersection between the two according to actual needs.

[0092] As shown in Figure 2, a plurality of fixing frames 3 are provided on the inner wall of the first shell 21. The fixing frames 3 include an upper bracket 32, a middle bracket 33 and a lower bracket 34. The two ends of the upper bracket 32 ​​form downward limiting protrusions 31. The two ends of the middle bracket 33 form upward and / or downward limiting protrusions 31. The two ends of the lower bracket 34 form upward limiting protrusions 31. The limiting protrusions 31 on the three fixing frames 3 are used to block the battery cells 1 set on different fixing frames 3 to prevent the battery cells 1 from shaking during installation and / or use, thereby affecting the stability of the energy storage device.

[0093] Of course, the number and arrangement of the fixing brackets 3 are not limited to the above embodiments, and those skilled in the art can make arrangements according to actual needs.

[0094] Optionally, as shown in FIG. 1 to FIG. 5 , the housing assembly 2 further includes: a first cover 24 and a second cover 25 , wherein the first cover 24 and the second cover 25 are spaced apart from each other on the inner wall of the first housing 21 .

[0095] In this example, the first cover 24 and the second cover 25 are respectively located at the two ends of the first shell 21 in the width direction. The first cover 24 is provided at the top of the first shell 21, and the second cover 25 is provided at the bottom of the first shell 21. The first cover 24 and the second cover 25 are fixed to the inner wall of the first shell 21. The first cover 24 and the second cover 25 are made of metal, plastic, ceramic, wood, etc. The first cover 24 and the second cover 25 are fixed to the inner wall of the first shell 21 by welding, bonding, riveting, clamping, etc. to form an accommodating space between the first cover 24 and the second cover 25. The first cover 24 and the second cover 25 can effectively improve the structural strength of the first shell 21.

[0096] Optionally, the first housing 21, the first cover 24, and the second cover 25 are all made of metal and are integrally formed by sheet metal processing. This method saves the step of connecting the first housing 21, the first cover 24, and the second cover 25. Compared with other connection methods, the integral molding can more effectively improve the connection strength and structural strength of the first cover 24, the second cover 25, and the first housing 21.

[0097] Optionally, as shown in Figure 6, the shell assembly 2 also includes a first side panel 26a, which is arranged on one side of the inner wall of the first shell 21, and one side edge of the first side panel 26a is connected to the inner wall of the first shell 21, and the first side panel 26a is connected to the same side end of the first cover body 24 and the second cover body 25.

[0098] In this example, the first side panel 26a is made of metal, plastic, ceramic, wood, etc. The first side panel 26a is fixed to the inner wall of the first shell 21 and / or connected to the first cover 24 and the second cover 25 by welding, bonding, riveting, clamping, etc. For example, the first side panels 26a are provided at both ends of the first direction of the first shell 21. The first side panels 26a are connected to the first cover 24 and the second cover 25. By strengthening the connection between the first shell 21 and the first cover 24 and the second cover 25 by the first side panels 26a, the overall structural strength of the first shell 21 and the first cover 24 and the second cover 25 can be effectively improved.

[0099] Of course, the configuration of the first side plate 26a is not limited to the above embodiment, and those skilled in the art can configure it according to actual needs.

[0100] Alternatively, as shown in FIG6 , the first side plate 26 a is provided with a notch 26 d , and the projection of the pole of the functional device along the first direction is located within the projection of the notch 26 d along the first direction.

[0101] For example, the notch 26d is a trapezoidal structure with an opening at one end. The notch 26d is used for welding the pole of the battery cell 1. By providing the notch 26d on the side of the housing assembly 2, the battery cell 1 can be easily installed and repaired.

[0102] Optionally, the shell assembly 2 also includes a second shell 27 opposite to the first shell 21, and retaining walls 28 are provided at both ends of the first direction of the second shell 27. The second shell 27 is arranged on the first shell 21, and the retaining walls 28 are located in the notch 26d, wherein the first direction is used to indicate the length direction of the first shell 21.

[0103] The top of the second housing 27 is connected to the first cover 24. The bottom of the second housing 27 is connected to the second cover 25. The retaining wall 28 is embedded in the trapezoidal notch 26d. The second housing 27, the first cover 24, the first housing 21, the second cover 25, the retaining wall 28, and the first side plate 26a form a rectangular parallelepiped. In other words, the entire housing assembly 2 is a rectangular parallelepiped.

[0104] The arrangement of the second shell 27 and the first shell 21 facilitates the installation of the battery cell 1 , and can effectively protect the battery cell 1 .

[0105] Of course, in the embodiment of the present application, the housing assembly 2 is not limited to the above structure, and those skilled in the art can configure it according to actual needs.

[0106] Optionally, the housing assembly 2 further includes a second side plate 26b and a third side plate 26c, the second side plate 26b and the third side plate 26c being disposed on one side of the inner wall of the first housing 21, and the second side plate 26b and the third side plate 26c being connected to the same side ends of the first cover 24 and the second cover 25, respectively;

[0107] Along the second direction, a gap 26 e is provided between the second side plate 26 b and the third side plate 26 c , wherein the second direction is used to indicate the width direction of the first housing 21 .

[0108] As shown in Figures 1 to 5, the second side plate 26b and the third side plate 26c are triangular. A gap 26e is formed between the second side plate 26b and the third side plate 26c. The two right-angled sides of the second side plate 26b and the third side plate 26c of the first cover body 24 are respectively connected to the first cover body 24 and the first shell 21, for fixing the connection between the first cover body 24 and the first shell 21. The two right-angled sides of the second side plate 26b and the third side plate 26c of the second cover body 25 are respectively connected to the second cover body 25 and the first shell 21, for fixing the connection between the second cover body 25 and the first shell 21. The distance between the hypotenuse of the second side plate 26b and the third side plate 26c of the first cover body 24 and the inner wall of the first shell 21 gradually decreases from the end connected to the first cover body 24 to the end away from the first cover body 24. The distance between the hypotenuse of the second side plate 26b and the third side plate 26c of the second cover 25 and the inner wall of the first shell 21 gradually decreases from the end connected to the second cover 25 to the end away from the second cover 25. This structure of the second side plate 26b and the third side plate 26c provides stability and significantly improves the structural strength of the first cover 24 and the first shell 21, and the second cover 25 and the first shell 21.

[0109] In other examples, the second side plate 26 b and the third side plate 26 c are arc-shaped structures, which can also effectively improve the structural strength of the first cover 24 and the first shell 21 , and the second cover 25 and the first shell 21 .

[0110] Of course, in the embodiment of the present application, the second side plate 26b and the third side plate 26c are not limited to the above structure, and those skilled in the art can make settings according to actual needs.

[0111] Optionally, a projection of the pole of the functional device along the first direction is located within a projection of the gap 26e along the first direction.

[0112] For example, the gap 26e is a trapezoidal structure with an opening at one end. The gap 26e is used for welding the poles of the battery cell 1. By providing the gap 26e on the side of the housing assembly, it is convenient to install and repair the battery cell 1.

[0113] Optionally, the shell assembly 2 also includes a second shell 27 opposite to the first shell 21, and retaining walls 28 are provided at both ends of the first direction of the second shell 27. The second shell 27 is arranged on the first shell 21, and the retaining walls 28 are located in the gap 26e, wherein the first direction is used to indicate the length direction of the first shell 21.

[0114] As shown in Figures 1 and 5, the top of the second housing 27 is connected to the first cover 24. The bottom of the second housing 27 is connected to the second cover 25. The retaining wall 28 is embedded in the trapezoidal accommodating space. The second housing 27, the first cover 24, the first housing 21, the second cover 25, the retaining wall 28, the second side plate 26b, and the third side plate 26c form a rectangular parallelepiped, that is, the entire housing assembly 2 is a rectangular parallelepiped.

[0115] The arrangement of the second shell 27 and the first shell 21 facilitates the installation of the battery cell 1 , and can effectively protect the battery cell 1 .

[0116] Of course, in the embodiment of the present application, the housing assembly 2 is not limited to the above structure, and those skilled in the art can configure it according to actual needs.

[0117] Optionally, the housing assembly 2 further includes a decorative cover 4 , which is disposed on an outer wall of the second housing 27 . The outer wall of the second housing 27 is a surface of the second housing 27 facing away from the battery cell 1 .

[0118] In this example, the decorative cover 4 is fixed to the outer wall of the second shell 27 by means of clamping, bolting, riveting, etc., which can improve the aesthetics of the energy storage device.

[0119] Optionally, a second reinforcement structure is provided on the outer wall of the second shell 27 , and the second reinforcement structure is located between the decorative cover 4 and the second shell 27 .

[0120] As shown in Figure 1, the top of the second housing 27 is connected to the first cover 24. The bottom of the second housing 27 is connected to the second cover 25. The second housing 27, first cover 24, first housing 21, second cover 25, second side plate 26b, third side plate 26c, and retaining wall 28 together form the housing assembly 2. The battery cell 1 is positioned within the housing assembly 2, providing protection for the battery cell 1. A second reinforcement structure is screwed onto the outer wall of the second housing 27, facing away from the battery cell 1. This reinforces the structural strength of the second housing 27. The second housing 27 cooperates with the first housing 21 to form the housing assembly 2, thereby securing the battery cell 1 within the housing assembly 2. Because the second reinforcement structure is located on the outer wall of the second housing 27, it avoids wasting storage space, increases the capacity of the energy storage device, and effectively improves the utilization of the storage space. The decorative cover 4 is fixed to the outer wall of the second housing 27 and covers the second reinforcement structure, enhancing the aesthetics of the energy storage device.

[0121] Optionally, the second reinforcement structure includes a second reinforcement rib 29 , and the second reinforcement rib 29 extends along a second direction, wherein the second direction is used to represent a width direction of the second shell 27 .

[0122] In this example, as shown in FIG1 , the second reinforcing rib 29 is made of metal, plastic, ceramic, or the like. The second reinforcing rib 29 is a strip-shaped structure. There may be one or more second reinforcing ribs 29. For example, the second reinforcing rib 29 is secured to the outer wall of the second housing 27 by bolting, riveting, clamping, welding, or the like. The second reinforcing rib 29 extends along the second direction and enhances the structural strength of the second housing 27.

[0123] Of course, the second reinforcement structure is not limited to the above embodiments, and those skilled in the art can configure it according to actual needs.

[0124] Optionally, a sealing strip 5 is provided at the edges of the second shell 27 and the first shell 21 .

[0125] As shown in Figure 5, sealing strips 5 are provided at the edges of the second housing 27 and the first housing 21. For example, when the first and second housings 21 and 27 are connected together by bolts, the sealing strips 5 are compressed between the first and second housings 21 and 27. By controlling the compression of the sealing strips 5, the housing assembly 2 is made waterproof, preventing impurities such as accumulated water and dust from entering the housing assembly 2 through the gap between the second housing 27 and the first housing 21 and damaging the battery cells 1. The provision of the sealing strips 5 effectively keeps the interior of the housing assembly 2 clean, extending the service life of the energy storage device.

[0126] Optionally, an insulating frame 6 is fixed to at least one end of the inner wall of the first shell 21 in a first direction, an electrical connecting piece 7 is fixed on the insulating frame 6, and a welding position 8 is provided at a position of the electrical connecting piece 7 corresponding to the electrode of the battery cell 1. The first direction is used to indicate the length direction of the first shell 21.

[0127] As shown in Figures 1 and 4, the insulating frame 6 is arranged on at least one end of the inner wall of the first shell 21 in the longitudinal direction by means of bolt connection, clamping, riveting, etc. The material of the insulating frame 6 is plastic, rubber, silicone, ceramic, etc. The electrical connecting piece 7 is arranged on the insulating frame 6 by means of bolt connection, riveting, clamping, etc. The electrical connecting piece 7 is used to connect with the output cable or input cable of the battery cell 1 to realize the charging and discharging function of the battery cell 1. The insulating frame 6 is not only used to place the electrical connecting piece 7, but also to lay cables. The cables are laid on the insulating frame 6, which makes the overall exterior of the energy storage device simple and improves the aesthetics.

[0128] For example, the common negative cable for each cell 1 is connected to the battery management system via an electrical connector 7, while the common positive cable for each cell 1 is connected to an external output port via another electrical connector 7, enabling charging and discharging of the cells 1. Each cell 1 is connected to a voltage sampling line, which is then connected to the battery management system. The battery management system is connected to a communication cable. This communication cable is connected to an external communication port, enabling communication between the energy storage device and external devices.

[0129] Of course, in the embodiment of the present application, the housing assembly 2 is not limited to the above structure, and those skilled in the art can configure it according to actual needs.

[0130] Optionally, at least one of the first cover 24 and the second cover 25 is provided with a handle 9 .

[0131] As shown in Figure 1, handles 9 are provided at both ends of the first cover 24. Handles 9 are also provided at both ends of the second cover 25. For example, the handles 9 are strip-shaped through-holes provided on the first and second covers 24, 25. When wall-mounting, the operator's hands can pass through the strip-shaped through-holes, effectively gripping the energy storage device. The handles 9 facilitate wall-mounting operations.

[0132] Of course, the handle 9 is not limited to the above embodiment, and those skilled in the art can configure it according to actual needs.

[0133] According to a second embodiment of the present application, an energy storage device is provided, which includes the housing assembly 2 described in any one of the above.

[0134] For example, the functional device is disposed in the accommodation space and is directly or indirectly disposed on the first housing 21 .

[0135] According to a third embodiment of the present application, an energy storage device is provided. The energy storage device includes the aforementioned housing assembly 2 . The functional device is a battery cell 1 .

[0136] According to a fourth embodiment of the present application, an energy storage device is provided. As shown in FIG1 , the energy storage device includes a housing assembly 2 and a battery cell 1. The housing assembly 2 is adapted to define an accommodating space, and the housing assembly 2 includes:

[0137] a first housing 21; and

[0138] The first reinforcing structure is arranged on the outer wall of the first shell 21. The outer wall of the first shell 21 is the surface of the first shell 21 facing away from the accommodating space. The first reinforcing structure includes a first reinforcing rib 22. The first reinforcing rib 22 extends along the arrangement direction of the battery cell 1.

[0139] As mentioned above, this arrangement of the first reinforcing ribs 22 can more effectively improve the structural strength of the housing assembly 2 .

[0140] According to a fifth embodiment of the present application, an energy storage system is provided, which includes an energy storage device and an electrical device, wherein the energy storage device supplies power to the electrical device, and the energy storage device is any one of the energy storage devices described above.

[0141] The above embodiments focus on the differences between the various embodiments. As long as the different optimization features between the various embodiments are not contradictory, they can be combined to form a better embodiment. Considering the simplicity of the text, they will not be repeated here.

[0142] Although some specific embodiments of the present application have been described in detail by way of examples, it should be understood by those skilled in the art that the above examples are for illustration only and are not intended to limit the scope of the present application. It should be understood by those skilled in the art that the above embodiments may be modified without departing from the scope and spirit of the present application. The scope of the present application is defined by the appended claims.

Claims

1. A housing assembly (2), the housing assembly (2) being adapted to define a housing space, wherein: The housing assembly (2) comprises: A first housing (21); and A first reinforcement structure, wherein the first reinforcement structure is arranged on an outer wall of the first shell (21), and the outer wall of the first shell (21) is a surface of the first shell (21) that is away from the accommodating space.

2. The housing assembly (2) according to claim 1, wherein: The first reinforcement structure comprises: A first reinforcing rib (22), wherein the first reinforcing rib (22) extends along a first direction, wherein the first direction is used to indicate a length direction of the first shell.

3. The housing assembly (2) according to claim 1, wherein: The first reinforcement structure comprises: A first reinforcing rib (22), wherein the first reinforcing rib (22) extends along a second direction, wherein the second direction is used to indicate a width direction of the first shell.

4. The housing assembly (2) according to claim 2, wherein: A plurality of first reinforcing ribs (22) are arranged on the outer wall of the first shell (21), and the number of the first reinforcing ribs (22) arranged in the middle region of the first shell (21) in the first direction is greater than the number of the first reinforcing ribs (22) arranged in the two side regions of the first shell (21) in the first direction.

5. The housing assembly (2) according to claim 1, wherein: The housing assembly (2) further comprises: A wall-mounted component (23), wherein the wall-mounted component (23) is arranged on the outer wall of the first shell (21), and the wall-mounted component (23) is suitable for hanging the first shell (21) on a wall.

6. The housing assembly (2) according to claim 5, wherein: The wall-mounted assembly (23) comprises: A first wall hanging piece (231) and a second wall hanging piece (232), wherein the first reinforcing structure is located between the first wall hanging piece (231) and the second wall hanging piece (232).

7. The housing assembly (2) according to claim 1, wherein: The housing assembly (2) further comprises: A fixing frame (3), the fixing frame (3) being arranged on one side of the inner wall of the first shell, the fixing frame (3) being suitable for carrying functional components.

8. The housing assembly (2) according to claim 7, wherein: Limiting structures are arranged at both ends of the fixing frame (3), and the limiting structures are suitable for positioning functional components.

9. The housing assembly (2) according to claim 8, wherein: The limiting structure is a limiting protrusion (31) formed by folding edges at both ends of the fixing frame (3).

10. The housing assembly (2) according to claim 1, wherein: The housing assembly (2) further comprises: A first cover body (24) and a second cover body (25), wherein the first cover body (24) and the second cover body (25) are arranged at an interval on the inner wall of the first shell (21).

11. The housing assembly (2) according to claim 10, wherein: The shell assembly (2) further comprises a first side plate (26a), the first side plate (26a) being arranged on one side of the inner wall of the first shell (21), one side edge of the first side plate (26a) being connected to the inner wall of the first shell (21), and the first side plate (26a) being connected to the same side end of the first cover body (24) and the second cover body (25).

12. The housing assembly (2) according to claim 11, wherein: The first side plate (26a) is provided with a notch (26d), and the projection of the pole of the functional device along the first direction is located within the projection of the notch (26d) along the first direction.

13. The housing assembly (2) according to claim 12, wherein: The housing assembly (2) further comprises a second housing (27) opposite to the first housing (21), and retaining walls (28) are arranged at both ends of the second housing (27) in a first direction, the second housing (27) is arranged on the first housing (21), and the retaining walls (28) are located in the notch (26d), wherein the first direction is used to indicate the length direction of the first housing (21).

14. The housing assembly (2) according to claim 10, wherein: The housing assembly (2) further comprises a second side plate (26b) and a third side plate (26c), wherein the second side plate (26b) and the third side plate (26c) are arranged on one side of the inner wall of the first housing (21), and the second side plate (26b) and the third side plate (26c) are respectively connected to the same side ends of the first cover body (24) and the second cover body (25); A gap (26e) is provided between the second side plate (26b) and the third side plate (26c) along a second direction, wherein the second direction is used to indicate a width direction of the first shell (21).

15. The housing assembly (2) according to claim 14, wherein: The projection of the pole of the functional device along the first direction is located within the projection of the gap (26e) along the first direction.

16. The housing assembly (2) according to claim 15, wherein: The shell assembly (2) further comprises a second shell (27) opposite to the first shell (21), and baffle walls (28) are arranged at both ends of the second shell (27) in a first direction, and the second shell (27) is arranged on the first shell (21), and the baffle walls (28) are located in the gap (26e), wherein the first direction is used to indicate the length direction of the first shell (21).

17. The housing assembly (2) according to claim 13 or 16, wherein: The shell assembly (2) further comprises a decorative cover (4), wherein the decorative cover (4) is arranged on the outer wall of the second shell (27), and the outer wall of the second shell (27) is the surface of the second shell (27) on a side facing away from the accommodating space.

18. The housing assembly (2) according to claim 17, wherein: A second reinforcement structure is provided on the outer wall of the second shell (27), and the second reinforcement structure is located between the decorative cover (4) and the second shell (27).

19. The housing assembly (2) according to claim 18, wherein: The second reinforcement structure comprises a second reinforcement rib (29), wherein the second reinforcement rib (29) extends along a second direction, wherein the second direction is used to indicate a width direction of the second shell (27).

20. An energy storage device, wherein: It comprises a housing assembly (2) as claimed in any one of claims 1 to 19.

21. An energy storage device, wherein: It comprises a housing assembly (2) as claimed in any one of claims 7, 8, 12 and 15, wherein the functional device is a battery cell (1).

22. An energy storage device, wherein: The invention comprises a housing component (2) and a battery cell (1), wherein the housing component (2) is suitable for defining an accommodating space, and the housing component (2) comprises: A first housing (21); and A first reinforcement structure, wherein the first reinforcement structure is arranged on an outer wall of the first shell (21), the outer wall of the first shell (21) being a surface of the first shell (21) on a side away from the accommodating space, the first reinforcement structure comprising a first reinforcement rib (22), the first reinforcement rib (22) extending along an arrangement direction of the battery cells (1).

23. An energy storage system, wherein: The energy storage system includes an energy storage device and an electrical device, the energy storage device supplies power to the electrical device, and the energy storage device is the energy storage device according to any one of claims 20 to 22.

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