Battery box cover assembly and energy storage battery with same

Abstract

The utility model provides a kind of battery box cover assembly and energy storage battery with it, it is related to new energy technology field, battery box cover assembly, comprising: cover body, cover body is used to with battery box body detachably connected;Reinforcing portion, reinforcing portion is connected with cover body;Mounting box, electrical element is arranged in mounting box, mounting box has with reinforcing portion connecting mounting position, and, mounting box has the separation position away from reinforcing portion.The utility model discloses technical scheme, by setting reinforcing portion on cover body, the strength of battery box cover assembly is increased, so as to install mounting box to cover body, it is convenient to maintain operation and the connection of external device, avoid the deformation or damage caused by low strength of suction plastic box cover, solve the problem that battery box cover cannot meet assembly demand in prior art caused by battery box cover using suction plastic box cover.

Description

Technical Field

[0001] This utility model relates to the field of new energy technology, specifically to a battery box cover assembly and an energy storage battery having the same. Background Technology

[0002] In the design of energy storage battery boxes, a common practice in the industry is to use a blister-formed lid as the top enclosure. These blister-formed lids are typically made of PP sheet through a stretching process, offering advantages such as good insulation, heat dissipation, high production efficiency, low cost, and light weight, thus finding widespread use in the battery box field. However, this material and processing method also presents some technical limitations and challenges.

[0003] Firstly, because the wall thickness of the blister pack lid cannot be evenly distributed during the stretching process, its overall structural strength is limited, especially in critical mounting areas where the strength is often insufficient to support riveting. Rivet nuts are essential for battery box maintenance and assembly, as they allow for the installation of accessories such as inspection windows and external mounting boxes on the outside of the box, facilitating maintenance operations and the connection of external equipment. However, due to the material and manufacturing limitations of the blister pack lid, directly installing rivet nuts on the lid will damage it, failing to meet actual assembly requirements.

[0004] Secondly, when using screws to secure the internal mounting box, the torque of existing blister pack covers is limited due to material strength constraints, easily causing deformation or damage to the cover structure. This further affects the battery box's performance and lifespan. Especially in applications requiring regular maintenance or replacement of internal devices, this deficiency necessitates disassembling the cover for each maintenance, increasing maintenance costs and time.

[0005] There is currently no effective solution to the above problems. Utility Model Content

[0006] The main objective of this invention is to provide a battery box cover assembly and an energy storage battery having the same, so as to solve the problem that the battery box cover made of blister packaging in the prior art cannot meet the assembly requirements.

[0007] To achieve the above objectives, according to one aspect of the present invention, a battery box cover assembly is provided, comprising: a cover body for detachably connecting to a battery box body; a reinforcing portion connected to the cover body; and a mounting box having an electrical component disposed therein, the mounting box having a mounting position connected to the reinforcing portion, and a disengaged position away from the reinforcing portion.

[0008] Furthermore, the battery box cover assembly includes a connecting component, wherein when the mounting box is in the mounting position, the mounting box is connected to the reinforcement via the connecting component.

[0009] Furthermore, the connecting assembly includes: a first connector disposed on the reinforcing part; and a second connector, through which the mounting box is connected to the reinforcing part.

[0010] Furthermore, the first connecting component is a rivet nut, and the second connecting component is a screw.

[0011] Furthermore, the reinforcing part is a sheet metal part, or the reinforcing part is an aluminum ring, or the reinforcing part is a copper ring.

[0012] Furthermore, the cover has a receiving cavity, the cavity wall of which has an installation opening, a reinforcing part extends circumferentially along the installation opening, and the reinforcing part is connected to the edge of the installation opening. The mounting box is provided with a connecting flange that matches the edge of the installation opening.

[0013] Furthermore, the battery box cover assembly includes a seal that extends circumferentially along the mounting opening and is located between the reinforcement and the connecting flange.

[0014] Furthermore, the seal is made of waterproof foam.

[0015] Furthermore, the cover has a receiving cavity, and when the mounting box is in the installation position, at least part of the mounting box is outside the receiving cavity, or the cover has a receiving cavity, and when the mounting box is in the installation position, the mounting box is inside the receiving cavity.

[0016] According to another aspect of the present invention, an energy storage battery is provided, including a battery module, a battery housing, and a battery housing cover assembly, wherein the battery housing cover assembly is the aforementioned battery housing cover assembly.

[0017] By applying the technical solution of this utility model, the strength of the battery box cover assembly is increased by setting a reinforcing part on the cover body, so that the mounting box can be installed on the cover body, which facilitates maintenance operation and connection of external equipment, and avoids deformation or damage caused by the low strength of the blister box cover. This solves the problem that the battery box cover cannot meet the assembly requirements due to the use of blister box covers in the prior art. Attached Figure Description

[0018] The accompanying drawings, which form part of this application, are used to provide a further understanding of the present invention. The illustrative embodiments of the present invention and their descriptions are used to explain the present invention and do not constitute an undue limitation of the present invention. In the drawings:

[0019] Figure 1 A schematic diagram of the structure of a first embodiment of the battery box cover assembly according to the present invention is shown;

[0020] Figure 2 A schematic diagram of the structure of a second embodiment of the battery box cover assembly according to the present invention is shown;

[0021] Figure 3 A schematic diagram of a third embodiment of the battery box cover assembly according to the present invention is shown.

[0022] The above figures include the following reference numerals:

[0023] 10. Cover; 11. Mounting port;

[0024] 20. Strengthening Department;

[0025] 30. Mounting box; 31. Connecting flange;

[0026] 40. Connecting component; 41. First connector;

[0027] 50. Sealing components. Detailed Implementation

[0028] It should be noted that, unless otherwise specified, the embodiments and features described in this application can be combined with each other. The present invention will now be described in detail with reference to the accompanying drawings and embodiments.

[0029] It should be noted that the terminology used herein is for the purpose of describing particular embodiments only and is not intended to limit the exemplary embodiments according to this application. As used herein, the singular form is intended to include the plural form as well, unless the context clearly indicates otherwise. Furthermore, it should be understood that when the terms "comprising" and / or "including" are used in this specification, they indicate the presence of features, steps, operations, devices, components, and / or combinations thereof.

[0030] It should be noted that the terms "first," "second," etc., in the specification, claims, and accompanying drawings of this application are used to distinguish similar objects and are not necessarily used to describe a specific order or sequence. It should be understood that such terms can be used interchangeably where appropriate so that the embodiments of this application described herein can be implemented, for example, in orders other than those illustrated or described herein. Furthermore, the terms "comprising" and "having," and any variations thereof, are intended to cover a non-exclusive inclusion; for example, a process, method, system, product, or apparatus that comprises a series of steps or units is not necessarily limited to those steps or units explicitly listed, but may include other steps or units not explicitly listed or inherent to such processes, methods, products, or apparatus.

[0031] Exemplary embodiments according to this application will now be described in more detail with reference to the accompanying drawings. However, these exemplary embodiments may be implemented in many different forms and should not be construed as being limited to the embodiments set forth herein. It should be understood that these embodiments are provided so that the disclosure of this application is thorough and complete, and that the concept of these exemplary embodiments is fully conveyed to those skilled in the art. In the drawings, for clarity, the thickness of layers and regions may be exaggerated, and the same reference numerals are used to denote the same devices, and therefore their description will be omitted.

[0032] Currently, blister pack covers are commonly used in domestic battery storage boxes. Blister pack covers offer good insulation and heat dissipation properties, and are convenient to produce, inexpensive, and lightweight. However, using this material for battery box covers also presents some problems:

[0033] 1) The inability to perform riveting processing makes it impossible to assemble external mounting components such as inspection windows on the outside.

[0034] 2) The mounting surface of the blister box lid is not strong enough, and the screw installation is limited by the strength of the blister box lid.

[0035] Combination Figures 1 to 3 In conjunction with specific embodiments of this utility model, a battery box cover assembly is provided. This addresses the problem that existing battery box covers made of blister packaging cannot meet assembly requirements.

[0036] Specifically, the battery box cover assembly includes a cover 10, a reinforcing part 20, and a mounting box 30. The cover 10 is detachably connected to the battery box body; the reinforcing part 20 is connected to the cover 10; electrical components are disposed inside the mounting box 30, the mounting box 30 has a mounting position connected to the reinforcing part 20, and the mounting box 30 has a detached position away from the reinforcing part 20.

[0037] In this embodiment, the cover 10, as the main component of the battery box cover, is made using a vacuum forming process. It has advantages such as being lightweight, insulating, and having good heat dissipation, but its mechanical strength is limited, making it unable to directly withstand high-torque screws or undergo riveting. The cover 10 is designed for a detachable connection with the battery box, facilitating battery box maintenance and repair. The reinforcing part 20 is connected to the cover 10, adding reinforcement at key installation locations. The reinforcing part 20 can be made of metal. The reinforcing part 20 is combined with the cover 10 through welding, bonding, or embedding, significantly improving the mechanical strength of the cover 10. This allows the cover 10 to withstand the installation of rivet nuts and the high-torque fixing of screws, solving the problem of insufficient strength in vacuum-formed covers. The mounting box 30 houses electrical components such as temperature sensors, voltage monitoring devices, and connectors, used to monitor the battery's operating status and provide external interfaces. The mounting box 30 is designed with installation positions that connect to the reinforcing part 20, i.e., it is fixed to the surface of the cover 10 reinforced by the reinforcing part 20, ensuring the stability and reliability of the mounting box 30. At the same time, the mounting box 30 also has a detachable position away from the reinforcing part 20, which means that the mounting box can be disassembled without damaging the cover 10, making it convenient for maintenance and replacement of electrical components.

[0038] By applying the technical solution of this utility model, the strength of the battery box cover assembly is increased by adding a reinforcing part 20 to the cover body 10, so that the mounting box 30 can be installed on the cover body 10, which facilitates maintenance, operation and connection of external equipment, and avoids deformation or damage caused by the low strength of the blister box cover. This solves the problem that the battery box cover cannot meet the assembly requirements due to the use of blister box covers in the prior art. At the same time, it ensures easy maintenance and connection of electrical components, and provides a more efficient and reliable solution for the design and manufacturing of energy storage batteries.

[0039] Furthermore, the battery box cover assembly includes a connecting component 40, and when the mounting box 30 is in the mounting position, the mounting box 30 is connected to the reinforcing part 20 via the connecting component 40.

[0040] In this embodiment, the connecting component 40 is a key part for achieving a reliable connection between the mounting box 30 and the reinforcing part 20. The connecting component 40 ensures the stable installation of the mounting box 30, facilitates disassembly and maintenance, and ensures the sealing and waterproof performance of the connection. The connecting component 40 can be, but is not limited to, a snap-fit ​​connecting component, a magnetic connecting component, a bolt connecting component, etc. Preferably, the connecting component 40 can be configured as a rivet nut and screw, which provides a more stable and reliable threaded connection than direct tapping or the use of self-tapping screws.

[0041] Furthermore, the connecting assembly 40 includes a first connector 41 and a second connector, the first connector 41 being disposed on the reinforcing part 20; the mounting box 30 is connected to the reinforcing part 20 through the first connector 41 and the second connector.

[0042] Combination Figure 2 As shown, in this embodiment, the mounting box 30 is installed onto the reinforcing part 20 by the first connector 41 and the second connector, which solves the technical problems of strength and assembly of the battery box cover assembly, improves the practicality and market competitiveness of the battery box cover assembly, and provides a solid technical foundation for the efficient operation and long-term maintenance of new energy battery systems.

[0043] Furthermore, the first connector 41 is a rivet nut, and the second connector is a screw.

[0044] The first connector 41 (rivet nut) is pre-positioned at a designated location on the reinforcing part 20. Its working principle involves using a special tool to pass one end of the rivet nut through a pre-drilled hole in the reinforcing part 20, and then riveting it on the back of the reinforcing part 20 to form a rivet joint, thus creating a secure threaded fixing point on the reinforcing part 20. The choice of rivet nut ensures high-torque screw fixing even on blister pack material, overcoming the drawbacks of uneven wall thickness and limited strength of PP sheets. The second connector is a reinforcing screw that matches the rivet nut. It is screwed into the threads of the rivet nut to fix the connecting flange 31 of the mounting box 30 to the reinforcing part 20. The use of the reinforcing screw ensures a tight connection between the mounting box 30 and the reinforcing part 20, while providing sufficient strength to withstand external forces, maintaining the stability and reliability of the battery pack cover assembly under various environments.

[0045] In this embodiment, the reinforcing part 20 is a sheet metal component. Sheet metal components have good mechanical strength and rigidity, which can effectively improve the structural stability of the blister box lid. Sheet metal components are usually made of materials such as galvanized steel sheet, stainless steel, or aluminum alloy. These materials not only have high strength but also good corrosion resistance, making them suitable for use in harsh environments. The processing technology for sheet metal components is mature, and they can be customized into various shapes and sizes to meet the connection requirements of different mounting boxes 30.

[0046] In this embodiment, the reinforcing part 20 is an aluminum ring. The main advantages of using an aluminum ring as the reinforcing part 20 are its light weight and good thermal conductivity. Compared to sheet metal parts, aluminum rings have a lower density, which helps reduce the overall weight of the battery box cover assembly, especially important for energy storage systems that require frequent movement. Simultaneously, the high thermal conductivity of the aluminum ring helps dissipate heat from the blister-formed cover, improving the overall thermal management capability of the battery box. The aluminum ring can be tightly fixed to the blister-formed cover through welding, pressing, or other methods, ensuring good connection strength.

[0047] In this embodiment, the reinforcing part 20 is a copper ring. As another material for the reinforcing part 20, the copper ring's main characteristics are excellent electrical and thermal conductivity, as well as good corrosion resistance. The use of a copper ring can provide additional electrical and thermal management functions for the battery box cover assembly, making it particularly suitable for applications requiring good electrical conductivity and heat dissipation. Although the strength of the copper ring may be slightly lower than that of sheet metal parts, its unique performance advantages in specific applications more than offset this disadvantage. The copper ring is typically fixed by welding or mechanical connection to ensure a secure bond with the blister pack cover.

[0048] Furthermore, the reinforcing part 20 has a ring-shaped structure. By adopting a ring-shaped reinforcing part 20, not only is the strength of the mounting surface of the blister pack cover improved, enabling it to withstand the fixing of the rivet nuts and the torque of the mounting box 30, but the versatility and design flexibility of the component are also increased, adapting to mounting boxes 30 of different shapes. This provides strong technical support for the efficient operation and long-term maintenance of the battery pack cover assembly. Even further, the reinforcing part 20 can be a circular ring or a square ring.

[0049] In this embodiment, the annular reinforcing part 20 surrounds the mounting opening of the mounting box 30, which can evenly distribute the torque when the mounting box 30 is fixed, avoiding material damage caused by local stress concentration. Its inner diameter matches the outer diameter of the mounting box 30, ensuring that the mounting box 30 can be tightly embedded to form a stable connection. The use of the annular reinforcing part 20 is particularly suitable for mounting boxes 30 that require good sealing performance. Its circular design can form a seamless connection with sealing components such as waterproof foam, providing better waterproof effect.

[0050] In this embodiment, for non-circular mounting boxes 30, such as cuboid shapes, the square annular reinforcement 20 can provide a more snug fit. The four corners and sides of the square annular reinforcement 20 can better adapt to the shape of the mounting box 30, ensuring a tight and stable connection. Compared to the circular annular reinforcement 20, the square annular reinforcement 20 can provide a larger support area in some situations, further improving connection strength, and is particularly suitable for mounting boxes 30 that need to withstand high torque or remain stable under multi-directional forces.

[0051] Furthermore, the cover 10 has a receiving cavity, and a mounting opening 11 is formed on the cavity wall. A reinforcing part 20 extends circumferentially along the mounting opening 11 and connects to the edge of the mounting opening 11. The mounting box 30 is provided with a connecting flange 31 that mates with the edge of the mounting opening 11. The mounting box 30 is connected to the reinforcing part 20 via its connecting flange 31. First, the connecting flange 31 of the mounting box 30 is aligned with the reinforcing part 20 on the mounting opening 11 of the cover 10 to ensure a precise fit. Then, the mounting box 30 is fixed to the cover 10 using a combination of rivet nuts and reinforcing screws. The reinforcing screws pass through pre-drilled holes on the connecting flange 31 and are screwed into the rivet nuts on the reinforcing part 20 to form a secure connection.

[0052] Combination Figure 2 As shown, in this embodiment, the cover 10 has an internal receiving cavity for accommodating the battery assembly and other electrical components. The top or side surface of the receiving cavity is provided with a mounting opening 11 for the insertion of the mounting box 30. The size and shape of the mounting opening 11 are customized according to the connection part of the mounting box 30 to ensure a precise match between the two. An annular reinforcing part 20 is provided around the periphery of the mounting opening 11. This reinforcing part can be a circular or square ring structure, and its main function is to enhance the structural strength of the edge of the mounting opening 11, facilitating the installation of the rivet nut and bearing the torque during the fixing of the mounting box 30. The reinforcing part 20 is tightly connected to the edge of the mounting opening 11, which can be achieved by welding, screw fixing, or pressing, ensuring a strong and airtight connection. The periphery of the mounting box 30 is designed with a connecting flange 31 that mates with the mounting opening 11. The shape of the connecting flange 31 matches the annular structure of the reinforcing part 20. When the mounting box 30 is placed in the mounting opening 11 of the cover 10, the connecting flange 31 can tightly fit the edge of the reinforcing part 20, forming a stable mechanical contact surface. The connecting flange 31 is provided with a pre-drilled hole for screw connection with the rivet nut on the reinforcing part 20.

[0053] Furthermore, the battery box cover assembly includes a seal 50, which extends circumferentially along the mounting opening 11 and is located between the reinforcement 20 and the connecting flange 31.

[0054] By providing a sealing element 50 extending circumferentially between the reinforcing part 20 and the connecting flange 31, the battery box cover assembly of this utility model not only ensures the high strength and stability of the connection part, but also provides excellent waterproof sealing performance, meeting the high standard requirements for battery box protection in outdoor and industrial environments, and demonstrating its wide applicability and technological innovation in new energy storage systems.

[0055] Furthermore, the seal 50 is made of waterproof foam. This design ensures that the seal 50 can form a tight contact with the edge of the mounting opening 11 and the connecting flange 31 of the mounting box 30, providing a uniform sealing effect regardless of the position of the mounting box 30 within the cover 10, preventing moisture, humidity, and dust from entering from the connection point.

[0056] In this embodiment, the sealing element 50 is made of a material with high elasticity and weather resistance, and can be, but is not limited to, waterproof foam, rubber, or silicone. These materials can return to their original shape after being compressed, maintaining long-term sealing performance, while also possessing good chemical resistance and anti-aging properties, remaining stable under harsh environmental conditions, and extending the service life of the battery box cover assembly.

[0057] Combination Figures 1 to 2 As shown, in this embodiment, the cover 10 has a receiving cavity. When the mounting box 30 is in the installation position, at least a portion of the mounting box 30 (such as a control panel, sensor interface, or access port) is located outside the receiving cavity, flush with or slightly protruding from the outer surface of the cover 10. This design is particularly suitable for components that require frequent external operation or monitoring, such as control panels, display screens, or sensor interfaces, allowing users to operate or inspect them without opening the entire battery compartment, thus improving operational convenience and maintenance efficiency.

[0058] Combination Figure 3 As shown, in this embodiment, the cover 10 has a receiving cavity, and when the mounting box 30 is in the installation position, the mounting box 30 is located within the receiving cavity. This design is suitable for components requiring a high level of protection, such as the core battery management system (BMS) or high-voltage circuits, maximizing the protection of these components from the external environment and improving the overall safety and reliability of the battery box. Furthermore, this design also helps to make rational use of the internal space of the battery box, optimize the overall layout, reduce external volume, and facilitate transportation and installation.

[0059] According to another aspect of the present invention, an energy storage battery is also provided, including a battery module, a battery housing, and a battery housing cover assembly, wherein the battery housing cover assembly is the battery housing cover assembly in the above embodiment.

[0060] Specifically, the battery box cover assembly includes a cover 10, a reinforcing part 20, and a mounting box 30. The cover 10 is detachably connected to the battery box body; the reinforcing part 20 is connected to the cover 10; electrical components are disposed inside the mounting box 30, the mounting box 30 has a mounting position connected to the reinforcing part 20, and the mounting box 30 has a detached position away from the reinforcing part 20.

[0061] In this embodiment, the battery module is the core component of the energy storage battery, typically composed of multiple battery cells (such as lithium-ion batteries, lithium titanate batteries, etc.) connected in series and / or parallel for storing and providing electrical energy. The battery enclosure provides a robust shell to house the battery module and other electrical components, such as the battery management system (BMS) and thermal management system (TMS). The materials and structure of the battery enclosure must ensure sufficient strength and protection to prevent the external environment from affecting the battery module, while also possessing good heat dissipation and insulation characteristics. By providing a reinforcing part 20 around the mounting opening 11 of the cover 10 and a sealing element 50 between the reinforcing part 20 and the connecting flange 31 of the mounting box 30, not only is the structural strength of the cover enhanced, ensuring the secure installation of the rivet nuts and the reliable connection of the external mounting box, but also the waterproof sealing performance is optimized, improving the overall protection level of the battery enclosure. By integrating this optimized battery enclosure cover assembly, the energy storage battery can better cope with the challenges of outdoor, industrial, or high-humidity environments, ensuring long-term stable operation.

[0062] As can be seen from the above description, the embodiments of this utility model achieve the following technical effects:

[0063] 1) By providing a reinforcing part 20 around the mounting opening 11 of the cover body 10, the structural strength of the blister box cover is significantly increased, enabling it to withstand the installation and fixing torque of the rivet nut, thereby ensuring a reliable connection of the external or internal mounting box 30 and avoiding the problem of insufficient strength caused by the material and processing technology limitations of traditional blister box covers.

[0064] 2) A sealing element 50 is provided between the reinforcing part 20 and the connecting flange 31, which achieves a high degree of sealing between the mounting box 30 and the cover 10, effectively preventing the intrusion of moisture, humidity and dust, improving the overall protection level of the battery box, and making it suitable for use in outdoor and harsh environmental conditions.

[0065] 3) Part of the mounting box 30 is designed to be external, located outside the receiving cavity of the cover 10, which makes it convenient for users to operate or inspect without opening the entire battery box, reducing maintenance costs and time, and improving the convenience of operation.

[0066] 4) The ring structure design of the reinforcing part 20, whether circular or square, can adapt to different shapes of mounting boxes 30, increasing the versatility and design flexibility of the battery box cover assembly and meeting the needs of different application scenarios.

[0067] 5) The use of blister pack material, combined with the metal parts of the reinforcing part 20, not only reduces costs but also maintains the overall lightweight structure, improves the efficiency of battery box handling and installation, and ensures sufficient strength and reliability.

[0068] For ease of description, spatial relative terms such as "above," "on top of," "on the upper surface of," "above," etc., are used herein to describe the spatial positional relationship of a device or feature as shown in the figures to other devices or features. It should be understood that spatial relative terms are intended to encompass different orientations in use or operation beyond the orientation of the device as described in the figures. For example, if the device in the figures were inverted, a device described as "above" or "on top of" other devices or structures would subsequently be positioned as "below" or "under" other devices or structures. Thus, the exemplary term "above" can include both "above" and "below." The device may also be positioned in other different ways (rotated 90 degrees or in other orientations), and the spatial relative descriptions used herein will be interpreted accordingly.

[0069] In addition to the above, it should be noted that the terms "one embodiment," "another embodiment," and "embodiment" used in this specification refer to specific features, structures, or characteristics described in connection with that embodiment, which are included in at least one embodiment described in the general description of this application. The appearance of the same expression in multiple places in the specification does not necessarily refer to the same embodiment. Furthermore, when a specific feature, structure, or characteristic is described in connection with any embodiment, the intention is to suggest that implementing such a feature, structure, or characteristic in conjunction with other embodiments also falls within the scope of this utility model.

[0070] In the above embodiments, the descriptions of each embodiment have different focuses. For parts not described in detail in a certain embodiment, please refer to the relevant descriptions in other embodiments.

[0071] The above description is merely a preferred embodiment of this utility model and is not intended to limit the utility model. Various modifications and variations can be made to this utility model by those skilled in the art. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of this utility model should be included within the protection scope of this utility model.

Claims

1. A battery box cover assembly, characterized in that, include: Cover (10), the cover (10) being detachably connected to the battery housing; A reinforcing part (20) is connected to the cover (10); Mounting box (30), wherein an electrical component is disposed therein, the mounting box (30) has a mounting position connected to the reinforcing part (20), and the mounting box (30) has a separation position away from the reinforcing part (20); The battery box cover assembly includes: When the mounting box (30) is located in the mounting position, the mounting box (30) is connected to the reinforcing part (20) via the connecting component (40); The connection component (40) includes: The first connector (41) is disposed on the reinforcing part (20); The second connector connects the mounting box (30) to the reinforcing part (20) via the first connector (41) and the second connector. The first connector (41) is a rivet nut, and the second connector is a screw.

2. The battery box cover assembly according to claim 1, characterized in that, The reinforcing part (20) is a sheet metal part, or the reinforcing part (20) is an aluminum ring, or the reinforcing part (20) is a copper ring.

3. The battery box cover assembly according to claim 1, characterized in that, The cover (10) has a receiving cavity, and an installation port (11) is provided on the cavity wall of the receiving cavity. The reinforcing part (20) extends circumferentially along the installation port (11) and is connected to the edge of the installation port (11). The mounting box (30) is provided with a connecting flange (31) that cooperates with the edge of the installation port (11).

4. The battery box cover assembly according to claim 3, characterized in that, The battery box cover assembly includes: A sealing element (50) is provided extending circumferentially along the mounting port (11) and the sealing element (50) is located between the reinforcing part (20) and the connecting flange (31).

5. The battery box cover assembly according to claim 4, characterized in that, The sealing element (50) is waterproof foam.

6. The battery box cover assembly according to claim 1, characterized in that, The cover (10) has a receiving cavity, and when the mounting box (30) is in the mounting position, at least a portion of the mounting box (30) is located outside the receiving cavity, or... The cover (10) has a receiving cavity, and when the mounting box (30) is in the mounting position, the mounting box (30) is located in the receiving cavity.

7. An energy storage battery, comprising a battery module, a battery housing, and a battery housing cover assembly, characterized in that, The battery box cover assembly is the battery box cover assembly according to any one of claims 1 to 6.

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