Shell assembly and energy storage equipment

Abstract

The utility model provides a shell assembly and energy storage equipment. The shell assembly comprises a first shell, a second shell and a covering part. The first housing is used for assembling the first circuit board assembly. The first shell is used for assembling the first circuit board assembly, the second shell is used for assembling the second circuit board assembly, the second shell and the first shell are enclosed to form an integral shell, a wiring port is formed at the junction of the shell wall of the first shell and the shell wall of the second shell, and the wiring port is used for exposing the wiring end of the first circuit board assembly and the wiring end of the second circuit board assembly. The covering piece is detachably connected to the integral shell and can cover or open the wiring port. During assembly, the first shell and the second shell are firstly assembled to form the integral shell, and then the first circuit board assembly and the second circuit board assembly are wired, so that a worker can connect a cable more conveniently, and after wiring is completed, the assembly can be completed only by installing the covering piece on the integral shell. Therefore, wiring operation is prevented from being carried out when the first shell and the second shell are assembled, and the assembling convenience is improved.

Description

Technical Field

[0001] This application relates to the field of energy storage equipment technology, specifically to a housing component and an energy storage device. Background Technology

[0002] Currently, in the relevant technologies of energy storage power supplies, the outer shell of the energy storage power supply is usually spliced ​​together from two overlapping parts, and each of the two overlapping parts has a circuit board. Since the circuit boards of the two parts need to be electrically connected by cables, during assembly, the personnel must perform splicing operations and wiring operations at the same time, which makes the operation quite difficult. Utility Model Content

[0003] In view of this, this application provides a housing assembly and energy storage device that can reduce assembly difficulty.

[0004] One embodiment of this application provides a housing assembly for an energy storage device, including a first housing, a second housing, and a cover. The first housing is configured to assemble a first circuit board assembly of the energy storage device. The second housing is configured to assemble a second circuit board assembly of the energy storage device. The second housing and the first housing are joined to form an integral housing. A wiring port is formed at the junction of the shell wall of the first housing and the shell wall of the second housing, exposing the wiring terminals of the first circuit board assembly and the wiring terminals of the second circuit board assembly. The cover is detachably connected to the integral housing and is configured to cover or open the wiring port.

[0005] The housing assembly provided in this application exposes the wiring terminals of the first circuit board assembly and the second circuit board assembly through the wiring port during assembly. This allows the first housing and the second housing to be assembled into a single housing first, and then the wiring of the first circuit board assembly and the second circuit board assembly can be performed. This makes it more convenient for personnel to connect cables. After the wiring is completed, only the cover needs to be installed on the single housing to complete the assembly. This avoids the need to perform wiring operations while assembling the first housing and the second housing, thereby reducing the difficulty of operation and improving the ease of assembly.

[0006] In some embodiments, the first housing includes a bottom wall and a first enclosure wall, the first enclosure wall surrounding the bottom wall and connected to the edge of the bottom wall; the second housing includes a top wall and a second enclosure wall, the second enclosure wall surrounding the top wall and connected to the edge of the top wall; the side of the first enclosure wall away from the bottom wall is connected to the side of the second enclosure wall away from the top wall; a first notch is provided on one side of the first enclosure wall, and a second notch is provided on one side of the second enclosure wall; the first notch and the second notch communicate to form a wiring port; and the cover is detachably connected to the first enclosure wall and the second enclosure wall.

[0007] In some embodiments, the first housing is provided with a first reinforcing post at the first notch, and the second housing is provided with a second reinforcing post at the second notch. One end of the first reinforcing post is connected to at least one of the bottom wall and the first enclosure wall, and one end of the second reinforcing post is connected to at least one of the top wall and the second enclosure wall. The other end of the first reinforcing post is connected to the other end of the second reinforcing post.

[0008] In some embodiments, a second chamber and a first chamber are formed within the overall housing. The second chamber is located near the top wall relative to the first chamber. The second chamber accommodates a first circuit board assembly and a second circuit board assembly. A wiring port exposes at least a portion of the second chamber. The first chamber is formed between the bottom wall and the first enclosure wall. The first chamber accommodates the battery cell assembly of the energy storage device. The second chamber is formed between the top wall, the second enclosure wall, the first enclosure wall, and the battery cell assembly.

[0009] In some embodiments, one side of the cover is rotatably connected to at least one of the first housing and the second housing, so that the cover can cover or open the wiring port by flipping it over; or, the cover is slidably connected to at least one of the first housing and the second housing, so that the cover can cover or open the wiring port by translating it.

[0010] In some embodiments, the cover has multiple heat dissipation holes.

[0011] In some embodiments, the overall housing has a limiting groove at the edge of the wiring port, the limiting groove accommodates at least part of the cover, the overall housing has a first magnetic attracting member at the groove wall of the limiting groove, the cover has a second magnetic attracting member corresponding to the first magnetic attracting member, the second magnetic attracting member attracts the first magnetic attracting member to fix the cover and the overall housing.

[0012] In some embodiments, the overall housing is provided with a first mounting hole, and the cover is provided with a second mounting hole. When the cover covers the wiring port, the first mounting hole is aligned with the second mounting hole. The energy storage device also includes a locking fastener located in the first mounting hole and the second mounting hole to fix the cover and the overall housing.

[0013] In some embodiments, the edge of the cover is provided with a buckle, and the edge of the overall housing is provided with a groove. When the cover covers the wiring port, the groove and the buckle cooperate to fix the cover and the overall housing.

[0014] In one embodiment of this application, an energy storage device is also provided. The energy storage device includes a first circuit board assembly, a second circuit board assembly, and a housing assembly as described in any of the above embodiments. When the cover opens the wiring port, the wiring terminals of the first circuit board assembly and the second circuit board assembly are exposed through the wiring port.

[0015] The energy storage device provided in this application exposes the wiring terminals of the first circuit board assembly and the second circuit board assembly through the wiring port during assembly. This allows the first and second housings to be assembled into a single housing first, and then the wiring of the first and second circuit board assemblies can be performed. This makes it more convenient for personnel to connect cables. After the wiring is completed, only the cover needs to be installed on the single housing to complete the assembly. This avoids the need to perform wiring operations while assembling the first and second housings, thereby reducing the difficulty of operation and improving the ease of assembly. Attached Figure Description

[0016] Figure 1 This is a perspective view of an energy storage device according to one embodiment of this application.

[0017] Figure 2 for Figure 1 An exploded view of the energy storage device.

[0018] Figure 3 for Figure 2 An exploded view of the first circuit board assembly and the first housing.

[0019] Figure 4 for Figure 1 A cross-sectional view of the energy storage device.

[0020] Figure 5 for Figure 1 A 3D view of the energy storage device without its cover.

[0021] Figure 6 for Figure 4 Enlarged view of point A in the middle.

[0022] Figure 7 for Figure 2 Enlarged view of point B in the middle.

[0023] Explanation of main component symbols

[0024] 100. Housing assembly; 200. Energy storage device; 201. First circuit board assembly; 202. Second circuit board assembly; 203. Battery cell assembly; 10. First housing; 11. Bottom wall; 12. First enclosure wall; 121. First notch; 13. First reinforcing post; 20. Second housing; 21. Top wall; 211. First mounting hole; 22. Second enclosure wall; 221. Second notch; 23. Second reinforcing post; 30. Cover; 31. Second mounting hole; 32. Protrusion; 40. Wiring port; 41. Limiting groove; 50. Overall housing; 51. First chamber; 52. Second chamber; 60. Second heat dissipation hole. Detailed Implementation

[0025] The technical solution of this application will now be described with reference to the accompanying drawings in the embodiments of this application. Obviously, the described embodiments are only a part of the embodiments of this application, and not all of the embodiments.

[0026] It should be noted that when an element is considered "connected to" or "located on" another element, it can be directly connected to the other element or may have an intervening element. In this application, unless otherwise explicitly specified and limited, the terms "installed," "connected," and "fixed," etc., should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a direct connection or an indirect connection through an intermediate medium; and they can refer to the internal communication between two elements. Those skilled in the art can understand the specific meaning of the above terms in this application based on the specific circumstances.

[0027] The terms "first," "second," etc., are used only to distinguish different objects and should not be construed as indicating or implying relative importance or implicitly specifying the number, specific order, or primary / secondary relationship of the indicated technical features. In the description of the embodiments of this application, "a plurality of" means two or more, unless otherwise explicitly defined. The shape descriptions in the embodiments of this application are merely illustrative and should not constitute any absolute limitation on this application.

[0028] In this document, the term "embodiment" means that a particular feature, structure, or characteristic described in connection with an embodiment may be included in at least one embodiment of this application. The appearance of this phrase in various places throughout the specification does not necessarily refer to the same embodiment, nor is it a mutually exclusive, independent, or alternative embodiment. Where there is no conflict, the various embodiments in this application can be combined with each other.

[0029] Unless otherwise defined, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this application belongs. The terminology used herein in the specification of this application is for the purpose of describing particular embodiments only and is not intended to be limiting of the application. The terms “comprising,” “having,” and “equipped with,” and any variations thereof, in the specification, claims, and foregoing drawings of this application, are intended to cover non-exclusive inclusion. The term “or / and” as used herein includes any and all combinations of one or more of the associated listed items.

[0030] Currently, in the relevant technologies of energy storage power supplies, the outer shell of the energy storage power supply is usually spliced ​​together from two overlapping parts, and each of the two overlapping parts has a circuit board. Since the circuit boards of the two parts need to be electrically connected by cables, during assembly, the personnel must perform splicing operations and wiring operations at the same time, which makes the operation quite difficult.

[0031] In view of this, this application provides an energy storage device that reduces assembly difficulty. A housing assembly is applied to the energy storage device and includes a first housing, a second housing, and a cover. The first housing is configured for assembling a first circuit board assembly of the energy storage device. The second housing is configured for assembling a second circuit board assembly of the energy storage device. The second housing and the first housing together form an integral housing. A wiring port is formed at the junction of the shell walls of the first and second housings, exposing the terminals of the first and second circuit board assemblies. The cover is detachably connected to the integral housing and is configured to cover or open the wiring port.

[0032] The housing assembly provided in this application exposes the wiring terminals of the first circuit board assembly and the second circuit board assembly through the wiring port during assembly. This allows the first housing and the second housing to be assembled into a single housing first, and then the wiring of the first circuit board assembly and the second circuit board assembly can be performed. This makes it more convenient for personnel to connect cables. After the wiring is completed, only the cover needs to be installed on the single housing to complete the assembly. This avoids the need to perform wiring operations while assembling the first housing and the second housing, thereby reducing the difficulty of operation and improving the ease of assembly.

[0033] The following detailed description of some embodiments of this application is provided in conjunction with the accompanying drawings. Unless otherwise specified, the following embodiments and features can be combined with each other.

[0034] like Figures 1 to 3 As shown, some embodiments of this application provide a housing assembly 100 and an energy storage device 200. The energy storage device 200 includes a first circuit board assembly 201, a second circuit board assembly 202, a battery cell assembly 203, and a housing assembly 100. The housing assembly 100 serves as the outer shell of the energy storage device 200. The first circuit board assembly 201, the second circuit board assembly 202, and the battery cell assembly 203 are all disposed inside the housing assembly 100 and can be supported and protected by the housing assembly 100.

[0035] For example, the energy storage device 200 can be a portable power source for outdoor scenarios or a home energy storage system for home energy storage, etc.; the first circuit board assembly 201 can be a PSDR (Power Supply Dirver) power circuit board, which can be used as an inverter module to control the charging and discharging of the cell assembly 203, so as to enable the cell assembly 203 to supply power to external devices or enable external devices to charge the cell assembly 203. The first circuit board assembly 201 can also be a battery management module for intelligent management and maintenance of the cell assembly 203, monitoring the status of the cell assembly 203, preventing overcharging and over-discharging of the cell assembly 203, so as to extend the service life of the cell assembly 203; the second circuit board assembly 202 can be a circuit board for controlling the socket and interface of the energy storage device 200. The socket and interface of the energy storage device 200 are located on the outer surface of the housing assembly 100 for plugging in external devices.

[0036] Among them, such as Figures 1 to 3 As shown, the housing assembly 100 includes a first housing 10, a second housing 20, and a cover 30. The first housing 10 is configured for assembling a first circuit board assembly 201, and the second housing 20 is configured for assembling a second circuit board assembly 202. The first housing 10 and the second housing 20 together form an integral housing 50. A wiring port 40 is formed at the junction of the shell wall of the first housing 10 and the shell wall of the second housing 20. The wiring port 40 is used to expose the wiring terminals of the first circuit board assembly 201 and the wiring terminals of the second circuit board assembly 202. The cover 30 is detachably connected to the integral housing 50 and is configured to cover or open the wiring port 40.

[0037] When assembling the energy storage device 200, the first housing 10 and the second housing 20 are first assembled into an integral housing 50. Then, the first circuit board assembly 201 and the second circuit board assembly 202 are wired through the wiring port 40. After the wiring is completed, the cover 30 is installed on the integral housing 50 and covers the wiring port 40, thereby completing the assembly of the energy storage device 200.

[0038] Compared to assembling the housing while performing wiring operations, the energy storage device 200 of this application allows for an adaptive adjustment of the assembly sequence during assembly, since the wiring port 40 exposes the wiring terminals of the first circuit board assembly 201 and the second circuit board assembly 202. That is, wiring is performed after assembling the first housing 10 and the second housing 20, making the wiring operation more convenient, thereby reducing the difficulty of operation and improving assembly efficiency and convenience.

[0039] Optionally, the terminals of the first circuit board assembly 201 and the second circuit board assembly 202 are positioned facing the connection port 40 to facilitate user cable connection and improve wiring convenience.

[0040] In some embodiments, such as Figure 1 , Figure 2 and Figure 4 As shown, the first housing 10 includes a bottom wall 11 and a first surrounding wall 12, with the first surrounding wall 12 surrounding the bottom wall 11 and connected to its edge. The second housing 20 includes a top wall 21 and a second surrounding wall 22, with the second surrounding wall 22 surrounding the top wall 21 and connected to its edge. The side of the first surrounding wall 12 away from the bottom wall 11 is connected to the side of the second surrounding wall 22 away from the top wall 21 to form an integral housing 50. A first notch 121 is provided on one side of the first surrounding wall 12, and a second notch 221 is provided on one side of the second surrounding wall 22. The first notch 121 and the second notch 221 are located on the same side of the integral housing 50 and are connected to form a connection port 40. A cover 30 is detachably connected to the first surrounding wall 12 and the second surrounding wall 22.

[0041] Optionally, the overall housing 50 is cubic in shape, and the first notch 121 and the second notch 221 are rectangular, so that the wiring port 40 is rectangular, so as to more fully expose the first circuit board assembly 201 and the second circuit board assembly 202, thereby facilitating wiring operations, as well as observation and maintenance of the first circuit board assembly 201 and the second circuit board assembly 202.

[0042] In some embodiments, such as Figure 1 , Figure 2 and Figure 5 As shown, a first chamber 51 and a second chamber 52 are formed within the overall housing 50. The second chamber 52 is connected to the first chamber 51, and the second chamber 52 is closer to the top wall 21 than the first chamber 51. The second chamber 52 is used to accommodate the first circuit board assembly 201 and the second circuit board assembly 202. The wiring port 40 is used to expose at least a portion of the second chamber 52 to expose the wiring terminals of the first circuit board assembly 201 and the second circuit board assembly 202. The first chamber 51 is formed between the bottom wall 11 and the first enclosure wall 12, and is used to accommodate the battery cell assembly 203. The second chamber 52 is formed between the top wall 21, the second enclosure wall 22, the first enclosure wall 12, and the battery cell assembly 203. That is, a portion of the second chamber 52 is formed in the first housing 10, and another portion of the second chamber 52 is formed in the second housing 20.

[0043] Alternatively, in other embodiments, the second chamber 52 may also be entirely formed in the second housing 20. In this case, the first chamber 51 is also entirely formed in the first housing 10. Therefore, only the second notch 221 is needed to expose the terminals of the first circuit board assembly 201 and the second circuit board assembly 202. In this case, the first notch 121 can be eliminated, thereby simplifying the structure.

[0044] In some embodiments, such as Figures 2 to 4As shown, the first housing 10 is provided with a first reinforcing post 13 at the first notch 121, and the second housing 20 is provided with a second reinforcing post 23 at the second notch 221. One end of the first reinforcing post 13 is connected to at least one of the bottom wall 11 and the first enclosure wall 12, and one end of the second reinforcing post 23 is connected to at least one of the top wall 21 and the second enclosure wall 22. The other end of the first reinforcing post 13 is connected to the other end of the second reinforcing post 23 to improve the strength of the housing assembly 100 at the wiring port 40.

[0045] Optionally, the first housing 10 has three first reinforcing posts 13 spaced apart on the side facing the first notch 121, and the second housing 20 has three second reinforcing posts 23 spaced apart on the side facing the second notch 221. The three first reinforcing posts 13 and the three second reinforcing posts 23 are connected one-to-one. The first reinforcing post 13 and the second reinforcing post 23 located in the middle are exposed at the wiring port 40, while the first reinforcing posts 13 and the second reinforcing posts 23 located on both sides are hidden inside the edge of the wiring port 40 to avoid being exposed at the wiring port 40. This reduces the obstruction of the wiring port 40 by the first reinforcing posts 13 and the second reinforcing posts 23, increases the effective area of ​​the wiring port 40, and facilitates wiring operations.

[0046] In some embodiments, one side of the cover 30 is rotatably connected to at least one of the first housing 10 and the second housing 20, so that the cover 30 can be flipped to cover or open the wiring port 40. For example, the top of the cover 30 is rotatably connected to the top edge of the second notch 221 via a pivot. The user can open the wiring port 40 by flipping the cover 30 upwards, and after releasing the cover 30, the cover 30 will automatically cover the wiring port 40 by flipping downwards due to gravity. As another example, the bottom of the cover 30 is rotatably connected to the bottom edge of the first notch 121 via a pivot. The user can open the wiring port 40 by flipping the cover 30 downwards. At this time, the cover 30 will naturally keep the wiring port 40 open due to gravity, which is convenient for wiring operations. As yet another example, the cover 30 is rotatably connected to the edge of the wiring port 40 on one side of the horizontal direction via a pivot. The cover 30 opens or covers the wiring port 40 by flipping horizontally, which makes it easier for the user to flip the cover 30 without having to resist the gravity of the cover 30.

[0047] In some embodiments, the cover 30 is slidably connected to at least one of the first housing 10 and the second housing 20, so that the cover 30 can cover or open the wiring port 40 by translation. For example, the top edge of the cover 30 is connected to the top edge of the second notch 221 via a groove or rail, and the bottom edge of the cover 30 is connected to the bottom edge of the first notch 121 via a groove or rail, so that the cover 30 can slide horizontally to open or cover the wiring port 40. The horizontal sliding of the cover 30 can improve stability and prevent the wiring port 40 from being accidentally opened or covered due to gravity displacement. For another example, the horizontal edges of the cover 30 are connected to the horizontal edges of the wiring port 40 via grooves or rails, so that the cover 30 can slide vertically to open or cover the wiring port 40. When the horizontal width of the wiring port 40 is small compared with the horizontal width of the overall housing 50, the vertical sliding of the cover 30 can prevent the cover 30 from extending out of the overall housing 50, so that the projection of the cover 30 toward the overall housing 50 is always within the outer surface of the overall housing 50, reducing the space occupied by the cover 30.

[0048] In some embodiments, the cover 30 is provided with a plurality of first heat dissipation holes (not shown), which connect the second chamber 52 to the outside air and are used to dissipate heat from the first circuit board assembly 201 and the second circuit board assembly 202 in the second chamber 52.

[0049] In some embodiments, such as Figures 2 to 4 As shown, the first housing 10 and the second housing 20 are provided with a plurality of second heat dissipation holes 60 at the positions corresponding to the second chamber 52. The plurality of second heat dissipation holes 60 connect the second chamber 52 with the outside air and are used to dissipate heat from the first circuit board assembly 201 and the second circuit board assembly 202 in the second chamber 52.

[0050] In some embodiments, such as Figure 1 , Figure 2 and Figure 6 As shown, the first housing 10 and the second housing 20 form a limiting groove 41 at the edge of the wiring port 40 through a stepped structure. The limiting groove 41 is used to accommodate at least part of the cover 30 to position the cover 30 in the overall housing 50.

[0051] In some embodiments, the first housing 10 and the second housing 20 are provided with a first magnetic attractor (not shown) at the groove wall of the limiting groove 41, and the cover 30 is provided with a second magnetic attractor corresponding to the first magnetic attractor. The second magnetic attractor attracts the first magnetic attractor to fix the cover 30 and the overall housing 50. The magnetic attraction can improve the convenience of assembling and disassembling the cover 30.

[0052] In some embodiments, such as Figure 1 , Figure 2 and Figure 7 As shown, the top wall 21 of the second housing 20 is provided with a first mounting hole 211, and the cover 30 is provided with a second mounting hole 31. When the cover 30 covers the wiring port 40, the first mounting hole 211 is aligned with the second mounting hole 31. The energy storage device 200 also includes a locking fastener (not shown), which is located in the first mounting hole 211 and the second mounting hole 31 to fix the cover 30 to the overall housing 50. For example, the locking fastener is a screw, and the second mounting hole 31 has an internal thread to engage the screw.

[0053] Optionally, the cover 30 is plate-shaped, and the inner surface of the cover 30 is provided with a protrusion 32. The second mounting hole 31 is provided on the protrusion 32, so that the second mounting hole 31 does not need to be directly provided on the plate of the cover 30, which can reduce the plate thickness of the cover 30. Optionally, the inner surface of the cover 30 is provided with a protrusion 32 on both sides along the horizontal direction, and each protrusion 32 is provided with a second mounting hole 31. Correspondingly, the top wall 21 is provided with two first mounting holes 211 at intervals. The two first mounting holes 211 are connected to the two second mounting holes 31 one by one, and a corresponding fastener is installed.

[0054] In some embodiments, the edge of the cover 30 is provided with a buckle (not shown), and the overall housing 50 is provided with a groove (not shown) on the edge of the wiring port 40. When the cover 30 covers the wiring port 40, the groove and the buckle cooperate to fix the cover 30 and the overall housing 50.

[0055] Furthermore, those skilled in the art should recognize that the above embodiments are merely illustrative of this application and are not intended to limit this application. Any appropriate changes and variations made to the above embodiments within the essential spirit and scope of this application fall within the scope of this application's disclosure.

Claims

1. A housing assembly for use in an energy storage device, characterized in that, include: A first housing is configured to assemble a first circuit board assembly of the energy storage device; The second housing is configured to assemble the second circuit board assembly of the energy storage device. The second housing and the first housing are enclosed to form an integral housing. The shell wall of the first housing and the shell wall of the second housing form a wiring port at the junction. The wiring port exposes the wiring terminals of the first circuit board assembly and the wiring terminals of the second circuit board assembly. and A cover, detachably connected to the integral housing, and configured to cover or open the wiring port.

2. The housing assembly as claimed in claim 1, characterized in that: The first housing includes a bottom wall and a first enclosure wall, the first enclosure wall surrounding the bottom wall and connected to the edge of the bottom wall. The second housing includes a top wall and a second enclosure wall, the second enclosure wall surrounding the top wall and connected to the edge of the top wall. The side of the first enclosure wall away from the bottom wall is connected to the side of the second enclosure wall away from the top wall. A first notch is provided on one side of the first enclosure wall, and a second notch is provided on one side of the second enclosure wall. The first notch and the second notch communicate to form the wiring port. The cover is detachably connected to the first enclosure wall and the second enclosure wall.

3. The housing assembly as claimed in claim 2, characterized in that: The first housing has a first reinforcing post at the first notch, and the second housing has a second reinforcing post at the second notch. One end of the first reinforcing post is connected to at least one of the bottom wall and the first enclosure wall, and one end of the second reinforcing post is connected to at least one of the top wall and the second enclosure wall. The other end of the first reinforcing post is connected to the other end of the second reinforcing post.

4. The housing assembly as claimed in claim 2, characterized in that: The integral housing has a second chamber and a first chamber. The second chamber is located near the top wall relative to the first chamber. The second chamber accommodates the first circuit board assembly and the second circuit board assembly. The wiring port exposes at least a portion of the second chamber. The first chamber is formed between the bottom wall and the first enclosure wall. The first chamber accommodates the battery cell assembly of the energy storage device. The second chamber is formed between the top wall, the second enclosure wall, the first enclosure wall, and the battery cell assembly.

5. The housing assembly as claimed in any one of claims 1 to 4, characterized in that: One side of the cover is rotatably connected to at least one of the first housing and the second housing, so that the cover can be flipped to cover or open the wiring port; Alternatively, the cover can be slidably connected to at least one of the first housing and the second housing, so that the cover can cover or open the wiring port by translation.

6. The housing assembly as claimed in any one of claims 1 to 4, characterized in that: The cover is provided with multiple heat dissipation holes.

7. The housing assembly as claimed in any one of claims 1 to 4, characterized in that: The integral housing has a limiting groove at the edge of the wiring port. The limiting groove accommodates at least part of the cover. The integral housing has a first magnetic attractor at the groove wall of the limiting groove. The cover has a second magnetic attractor corresponding to the first magnetic attractor. The second magnetic attractor attracts the first magnetic attractor to fix the cover to the integral housing.

8. The housing assembly as claimed in any one of claims 1 to 4, characterized in that: The overall housing is provided with a first mounting hole, and the cover is provided with a second mounting hole. When the cover covers the wiring port, the first mounting hole is aligned with the second mounting hole. The energy storage device also includes a locking device, which is located in the first mounting hole and the second mounting hole to fix the cover to the overall housing.

9. The housing assembly as claimed in any one of claims 1 to 4, characterized in that: The edge of the cover is provided with a buckle, and the edge of the overall housing is provided with a groove. When the cover covers the wiring port, the groove and the buckle cooperate to fix the cover and the overall housing.

10. An energy storage device, characterized in that: The energy storage device includes a first circuit board assembly, a second circuit board assembly, and a housing assembly as described in any one of claims 1 to 9. When the cover opens the wiring port, the wiring terminals of the first circuit board assembly and the second circuit board assembly are exposed through the wiring port.

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