A battery box upper cover

Abstract

A battery box upper cover, comprising a cover plate, a surrounding edge for buckling with the box is arranged on the cover plate, a sealing strip is arranged on the outer periphery of the surrounding edge, the sealing strip extends to the bottom of the surrounding edge, and the sealing strip is used for sealing the gap between the box and the cover plate. Through the technical scheme, the sealing strip is directly arranged on the outer periphery of the surrounding edge of the cover plate, and the sealing strip extends to the bottom of the surrounding edge, so that the integrated forming or pre-assembly of the sealing structure on the box cover is realized. The structure can effectively avoid the problems of assembly misplacement, missing assembly or quality defects difficult to be found in time of the manual assembly of the sealing ring in the background art, and reduce the risk of electrolyte leakage caused by poor sealing. When the cover plate is buckled with the box, the sealing strip can form stable and uniform compression sealing along the bottom of the surrounding edge and the box, so that the sealing area is more complete, and the sealing performance is significantly improved.

Description

Technical Field

[0001] This utility model relates to a battery box cover, belonging to the field of battery accessories. Background Technology

[0002] Batteries are typically installed in battery cases. Existing battery cases include a case body and a cover. The case body and cover are usually sealed with a sealing ring, which is manually installed. A groove for the sealing ring is provided on the cover. Chinese utility model patent CN220420780U discloses a battery case structure, a battery, and an electrical device. The battery case structure includes: a case body; a cover that fits over the case body to form a space for accommodating individual battery cells; and a sealant groove on the circumferential sidewall of one of the case body and the cover, located on the end face of the circumferential sidewall facing the other side of the case body and cover. The height of the inner wall of the sealant groove is greater than the height of the outer wall. The end face of the inner wall abuts against the other side of the case body and cover when they are closed. The sealant is used to seal the gap between the case body and the cover. The patent describes the use of sealing strips to seal the battery box, but during manual operation, problems such as misalignment during assembly and failure to detect quality issues with the sealing ring often lead to leakage. Utility Model Content

[0003] The purpose of this utility model is to overcome the shortcomings and deficiencies of the existing technology and to provide a battery box cover.

[0004] A battery case cover includes a cover plate with a perimeter for engaging with the case. A sealing strip is provided along the outer perimeter of the perimeter, extending to the bottom of the perimeter and used to seal the gap between the case and the cover plate.

[0005] This technical solution involves directly placing the sealing strip on the outer periphery of the cover plate's edge, extending it to the bottom of the edge, thus achieving integrated molding or pre-assembly of the sealing structure on the cover. This structure effectively avoids problems such as misalignment, omissions, or difficulty in timely detection of quality defects that easily occur with manually assembled sealing rings, as described in the background technology, reducing the risk of electrolyte leakage due to inadequate sealing. When the cover plate and the box body are fastened together, the sealing strip can form a stable and uniform compression seal along the bottom of the edge, making the sealing area more complete and significantly improving sealing performance.

[0006] Preferably, the sealing strip has a protruding sealing rib along the circumferential direction of the perimeter.

[0007] This technical solution involves forming protruding sealing ribs on the sealing strip. When the cover plate is fastened to the housing, the sealing ribs can first contact the corresponding position of the housing and undergo elastic deformation under the assembly pressure to form a sealing interface with line contact or multi-point contact.

[0008] Furthermore, the sealing ribs are spaced apart on the outer wall of the sealing strip.

[0009] This technical solution, by arranging multiple sealing ribs at intervals on the outer wall of the sealing strip, creates multiple independent sealing interfaces when the cover and the casing are fastened together, upgrading the sealing structure from a single seal to a multi-layer seal. Simultaneously, the multi-rib structure maintains a stable seal even with minor deformations or dimensional errors in the cover and casing, improving the sealing consistency and service life of the battery box under temperature changes and vibration conditions.

[0010] Preferably, the cover plate has a plurality of connecting parts spaced apart along the outer perimeter of the surrounding edge, and the surrounding edge is provided with a first connecting hole extending through the connecting parts for the box body to be fixedly connected to the cover plate by bolts.

[0011] This technical solution creates a more reliable mechanical locking structure between the cover and the casing, avoiding the risk of loosening caused by assembly errors, vibration, or aging in traditional snap-fit ​​structures. The bolt-fixing method facilitates maintenance and disassembly, allowing for quick and standardized disassembly and reinstallation when the battery box needs inspection, cell replacement, or maintenance, thus improving the product's maintainability and versatility.

[0012] Furthermore, the sealing strip has a second connecting hole corresponding to the first connecting hole.

[0013] This technical solution allows bolts to pass directly through the sealing strip and mate with the first connection hole, preventing the sealing strip from obstructing the installation of the cover plate and the housing. This structure avoids the risk of squeezing or puncturing the sealing strip during tightening, ensuring the integrity and sealing performance of the sealing strip.

[0014] Furthermore, the second connecting hole has a raised edge along its outer periphery.

[0015] This technical solution prevents the sealing strip from tearing, deforming, or expanding due to concentrated stress during tightening. The raised edge enhances the structural strength of the hole area, ensuring the sealing strip maintains a stable shape and position under bolt tightening force.

[0016] Furthermore, the sealing strip, sealing rib, and second connecting hole are integrally injection molded.

[0017] This technical solution utilizes an integrated injection molding process to integrally form the sealing strip body, the spaced sealing ribs, and the protruding edge structure at the second connecting hole in a single molding process. This avoids problems such as assembly errors, misalignment, and weak connections caused by the need for later assembly, bonding, or manual assembly of multi-piece sealing structures.

[0018] Preferably, the sealing strip is made of PVC.

[0019] This technical solution utilizes PVC's excellent corrosion resistance, aging resistance, and chemical resistance, effectively resisting the erosion of battery electrolytes, moisture, and the external environment, thus extending the service life of the sealing structure. PVC also possesses good resilience, resisting permanent deformation under long-term compression conditions, which helps maintain the long-term stable sealing performance of the battery box.

[0020] The beneficial effects of this utility model are as follows: By directly arranging the sealing strip on the outer periphery of the cover plate and extending it to the bottom of the periphery, the sealing structure is integrated into the cover plate or pre-assembled. This structure effectively avoids the problems of misalignment, omissions, or difficulty in timely detection of quality defects that easily occur when manually assembling sealing rings, as described in the background art, and reduces the risk of electrolyte leakage due to inadequate sealing. When the cover plate and the box body are fastened together, the sealing strip can form a stable and uniform compression seal with the box body along the bottom of the periphery, making the sealing area more complete and significantly improving the sealing performance. Attached Figure Description

[0021] To more clearly illustrate the technical solutions in the embodiments of this utility model or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this utility model. For those skilled in the art, obtaining other drawings based on these drawings without creative effort still falls within the scope of this utility model.

[0022] Figure 1 This is a schematic diagram of the main structure of this utility model; Figure 2 This is a structural schematic diagram from another perspective of the present invention; Figure 3 for Figure 1 Enlarged detail view of point A in the middle; In the figure, 1 is the cover plate; 11 is the connecting part; 12 is the first connecting hole; 2 is the surrounding edge; 3 is the sealing strip; 31 is the sealing rib; 32 is the second connecting hole; and 33 is the protruding edge. Detailed Implementation

[0023] To make the objectives, technical solutions and advantages of this utility model clearer, the utility model will be described in further detail below with reference to the accompanying drawings.

[0024] It should be noted that all uses of "first" and "second" in the embodiments of this utility model are for the purpose of distinguishing two entities or parameters with the same name but different names. It is clear that "first" and "second" are only for the convenience of expression and should not be construed as limiting the embodiments of this utility model. Subsequent embodiments will not explain this in detail.

[0025] The directional and positional terms used in this utility model, such as "up," "down," "front," "back," "left," "right," "inner," "outer," "top," "bottom," and "side," are merely for reference to the accompanying drawings. Therefore, the directional and positional terms used are for the purpose of explaining and understanding this utility model, and not for limiting the scope of protection of this utility model.

[0026] like Figure 1-3 As shown, this is an embodiment of a battery box cover according to the present invention, including a cover plate 1. The cover plate 1 is provided with a perimeter 2 for fastening with the box body. A sealing strip 3 is provided along the outer periphery of the perimeter 2. The sealing strip 3 extends to the bottom of the perimeter 2 and is used to seal the gap between the box body and the cover plate 1.

[0027] This technical solution involves directly placing the sealing strip 3 on the outer periphery of the cover plate 1's surrounding edge 2, extending the sealing strip 3 to the bottom of the surrounding edge 2. This achieves integrated molding or pre-assembly of the sealing structure on the cover. This structure effectively avoids problems such as misalignment, omissions, or difficulty in timely detection of quality defects that easily occur with manual assembly of sealing rings, as described in the background art, reducing the risk of electrolyte leakage due to inadequate sealing. When the cover plate 1 is fastened to the box body, the sealing strip 3 forms a stable and uniform compression seal along the bottom of the surrounding edge 2, making the sealing area more complete and significantly improving sealing performance.

[0028] The sealing strip 3 is provided with a protruding sealing rib 31 along the circumferential direction of the perimeter 2.

[0029] With this technical solution, by forming a protruding sealing rib 31 on the sealing strip 3, when the cover plate 1 is fastened to the box body, the sealing rib 31 can first contact the corresponding position of the box body, and undergo elastic deformation under the action of assembly pressure to form a sealing interface of line contact or multi-point contact.

[0030] The sealing ribs 31 are spaced apart on the outer wall of the sealing strip 3.

[0031] This technical solution, by arranging multiple sealing ribs 31 at intervals on the outer wall of the sealing strip 3, forms multiple independent sealing interfaces when the cover plate 1 and the box body are fastened together, thus upgrading the sealing structure from a single seal to a multi-layer seal. Simultaneously, the multi-rib structure maintains a stable seal even when there are minor deformations or dimensional errors between the cover plate 1 and the box body, improving the sealing consistency and service life of the battery box under temperature changes and vibration conditions.

[0032] The cover plate 1 has several connecting parts 11 spaced apart along the outer perimeter of the circumference of the edge 2. The edge 2 is provided with a first connecting hole 12 that passes through the connecting part 11, for the box body to be fixedly connected to the cover plate 1 by bolts.

[0033] This technical solution creates a more reliable mechanical locking structure between the cover plate 1 and the casing, avoiding the risk of loosening caused by assembly deviations, vibration, or aging in traditional snap-fit ​​structures. The bolt-fixing method facilitates maintenance and disassembly, allowing for quick and standardized disassembly and reinstallation when the battery box needs inspection, cell replacement, or maintenance, thus improving the product's maintainability and versatility.

[0034] The sealing strip 3 has a second connecting hole 32 corresponding to the first connecting hole 12.

[0035] This technical solution allows the bolts to pass directly through the sealing strip 3 and engage with the first connecting hole 12, preventing the sealing strip 3 from obstructing the installation of the cover plate 1 and the housing. This structure avoids the risk of squeezing or puncturing the sealing strip 3 during tightening, ensuring the integrity and sealing performance of the sealing strip 3.

[0036] The second connecting hole 32 has a raised edge 33 along its outer periphery.

[0037] This technical solution prevents the sealing strip 3 from tearing, deforming, or expanding due to concentrated force during the tightening process. The raised edge 33 enhances the structural strength of the hole area, ensuring that the sealing strip 3 maintains a stable shape and position under bolt tightening force.

[0038] The sealing strip 3, sealing rib 31, and second connecting hole 32 are integrally injection molded.

[0039] This technical solution utilizes an integrated injection molding process to integrally form the sealing strip 3 body, the spaced sealing ribs 31, and the protruding edge 33 at the second connecting hole 32 in a single molding process. This avoids problems such as assembly errors, misalignment, and weak connections caused by the need for later assembly, bonding, or manual assembly of multi-piece sealing structures.

[0040] The sealing strip 3 is made of PVC.

[0041] This technical solution utilizes PVC's excellent corrosion resistance, aging resistance, and chemical resistance, effectively resisting the erosion of battery electrolytes, moisture, and the external environment, thus extending the service life of the sealing structure. PVC also possesses good resilience, resisting permanent deformation under long-term compression conditions, which helps maintain the long-term stable sealing performance of the battery box.

[0042] The above-disclosed embodiments are merely preferred embodiments of the present utility model and should not be construed as limiting the scope of the present utility model. Therefore, any equivalent variations made in accordance with the claims of the present utility model shall still fall within the scope of the present utility model.

[0043] Although the present invention has been described with reference to several specific embodiments, it should be understood that the present invention is not limited to the specific embodiments disclosed. The present invention is intended to cover various modifications and equivalent arrangements included within the spirit and scope of the appended claims.

Claims

1. A battery box cover, characterized in that: The device includes a cover plate with a perimeter for engaging with the housing. A sealing strip is provided along the outer perimeter of the perimeter, extending to the bottom of the perimeter and used to seal the gap between the housing and the cover plate.

2. The battery box cover as described in claim 1, characterized in that: The sealing strip has protruding sealing ribs along the circumferential direction of the perimeter.

3. The battery box cover as described in claim 2, characterized in that: The sealing ribs are spaced apart on the outer wall of the sealing strip.

4. The battery box cover as described in claim 1, characterized in that: The cover plate has several connecting parts spaced apart along the outer perimeter of the surrounding edge. The surrounding edge is provided with a first connecting hole that extends through the connecting parts, for the box body to be fixedly connected to the cover plate by bolts.

5. The battery box cover as described in claim 4, characterized in that: The sealing strip has a second connecting hole corresponding to the first connecting hole.

6. The battery box cover as described in claim 5, characterized in that: The second connecting hole has a raised edge along its outer periphery.

7. The battery box cover as described in claim 1 or 5, characterized in that: The sealing strip, sealing rib, and second connecting hole are injection molded as a single unit.

8. The battery box cover as described in claim 1, characterized in that: The sealing strip is made of PVC.

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