Battery pack shell

Abstract

The utility model relates to the technical field of battery packs, and discloses a battery pack shell which comprises a shell body, the shell body is provided with an opening, a fixing edge extending outwards along the opening is arranged on the shell body, and a fixing hole penetrating through the fixing edge is formed in the fixing edge. The cover plate is detachably arranged on the shell and comprises a mounting surface which is opposite to the opening and blocks the opening, a fixing column opposite to the fixing hole is arranged on the mounting surface, and the fixing column is provided with a threaded hole; the bolt penetrates through the fixing hole and is connected into the threaded hole, and the linear distance between the mounting face and the fixing edge can be adjusted by rotating the bolt. The battery pack shell provided by the utility model is easy to assemble and maintain and high in aesthetic degree.

Description

Technical Field

[0001] The utility model belongs to the technical field of battery packs, and in particular relates to a battery pack shell. Background Art

[0002] In order to facilitate the installation of battery cell components, the battery pack shell usually adopts a split design, consisting of a shell and a cover plate. The traditional battery pack shell design is that a fixing column is provided on the shell, and a corresponding fixing hole is provided on the cover plate, and the two are connected by bolts. However, this design will cause traces of fixing holes and bolts to be left on the surface of the cover plate, which not only destroys the flatness of the cover plate surface, but also exposes these traces to the user's sight during the use of the battery pack, affecting the overall appearance of the battery pack. In this regard, the prior art proposes a design in which a fixing hole is opened on the side of the cover plate. Although this solution can maintain the flatness and aesthetics of the cover plate surface, it encounters new challenges in the actual assembly process: since sealant needs to be applied between the cover plate and the shell, the side fastening method cannot effectively perform the glue pressing operation. Therefore, before fastening the cover plate and the shell with bolts, the glue pressing step must be completed using special equipment. This not only increases the complexity of battery pack assembly, but also is not conducive to the later maintenance of the battery pack. Utility Model Content

[0003] The purpose of the utility model is to provide a battery pack casing which is easy to assemble and maintain and has high aesthetics in view of the above problems in the prior art.

[0004] The purpose of the utility model can be achieved through the following technical solutions: a battery pack shell, comprising:

[0005] A shell, the shell having an opening, and the shell is provided with a fixing edge extending outward along the opening, and the fixing edge is provided with a fixing hole penetrating the fixing edge;

[0006] A cover plate, the cover plate is detachably arranged on the housing, and comprises a mounting surface opposite to the opening and blocking the opening, a fixing column opposite to the fixing hole is arranged on the mounting surface, and the fixing column has a threaded hole;

[0007] A bolt is passed through the fixing hole and connected to the threaded hole, and the linear distance between the mounting surface and the fixing edge can be adjusted by rotating the bolt.

[0008] In the above-mentioned battery pack shell, a sealant is further provided between the mounting surface and the fixed edge, the sealant abuts against the mounting surface and the fixed edge respectively, and when the straight-line distance decreases, the mounting surface and the fixed edge can squeeze the sealant.

[0009] In the above-mentioned battery pack shell, the fixed edge includes a first extension edge, the first extension edge extends outward along the four sides of the opening, the fixing hole is provided on the first extension edge and passes through the first extension edge, and there are a plurality of fixing holes arranged along the length direction of the first extension edge.

[0010] In the above-mentioned battery pack shell, a plurality of grooves are provided on the side of the first extension edge away from the mounting surface, the grooves are recessed in a direction close to the fixing holes, correspond to and are connected with the fixing holes one by one, and the inner diameter of the grooves is larger than the diameter of the fixing holes.

[0011] In the above-mentioned battery pack shell, a plurality of limiting structures extending toward the mounting surface are provided on the first extension edge facing the mounting surface, the limiting structures correspond one-to-one with the fixing holes and are coaxially connected, and the limiting structures have limiting holes for the fixing columns to extend into, and when the fixing columns extend into the limiting holes, the threaded holes are coaxial with the fixing holes.

[0012] In the above-mentioned battery pack shell, the limiting hole includes a cylindrical hole and a conical hole which are interconnected, the cylindrical hole is located on the side close to the fixing hole, and the conical hole is located on the side close to the mounting surface, wherein the diameter of the cylindrical hole is adapted to the diameter of the fixing column, the diameter of the conical hole at one end close to the mounting surface is larger than the diameter of the fixing column, and the diameter at the end away from the mounting surface is adapted to the diameter of the fixing column.

[0013] In the above-mentioned battery pack shell, the fixed edge includes a second extension edge connected to the first extension edge, the second extension edge is adapted to the length of the first extension edge and is perpendicular to the mounting surface, and the sealant is arranged between the second extension edge and the mounting surface.

[0014] In the above-mentioned battery pack shell, a plurality of isolation parts corresponding to the limiting structure are also provided on the second extended edge, the isolation parts protrude toward the inside of the opening, and cooperate with the second extended edge to form a cavity, the limiting structure is in the cavity, and the sealant is provided between the isolation parts and the mounting surface.

[0015] In the above-mentioned battery pack shell, the cover plate is further provided with a rim perpendicularly connected to the mounting surface, the rim is arranged along the circumference of the mounting surface and covers the second extending edge.

[0016] In the above-mentioned battery pack casing, the cover plate and the fixing column are both sheet metal parts, and the fixing column is connected to the cover plate by riveting.

[0017] Compared with the prior art, the beneficial effects of the utility model are as follows: by setting a fixing edge with a fixing hole on the shell, setting a fixing column with a threaded hole on the mounting surface of the cover plate, and connecting the bolt through the fixing hole to the threaded hole, the straight-line distance between the mounting surface and the fixing edge can be adjusted when the bolt is rotated. This design not only hides the connection point between the bolt and the cover plate inside the shell, avoiding the traces of the fixing hole and the bolt on the surface of the cover plate, and effectively ensuring the flatness and aesthetics of the surface of the cover plate; but also during the tightening process, the bolt can drive the cover plate to synchronously apply an axial clamping force to the shell, thereby eliminating the need for additional glue pressing operations, simplifying the assembly process of the battery pack, improving assembly efficiency, and enhancing the convenience of maintenance. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] Figure 1 This is an exploded view of a battery pack casing according to an embodiment of the present utility model.

[0019] Figure 2 This is an exploded view of a battery pack housing from another perspective of an embodiment of the present utility model.

[0020] Figure 3 for Figure 2 Enlarged view of point A in the middle.

[0021] Figure 4 This is a cross-sectional view of a battery pack shell according to an embodiment of the present utility model.

[0022] Figure 5 for Figure 4 Enlarged view of point B in the middle.

[0023] In all the drawings, the same figure marks represent the same technical features, specifically: 100, shell; 101, opening; 110, first extended edge; 111, groove; 120, second extended edge; 121, isolation portion; 130, fixing hole; 200, cover plate; 210, mounting surface; 220, fixing column; 230, edging; 300, limiting structure; 310, cylindrical hole; 320, conical hole. DETAILED DESCRIPTION

[0024] The following are specific embodiments of the present invention and the accompanying drawings to further describe the technical solution of the present invention, but the present invention is not limited to these embodiments.

[0025] It should be noted that all directional indications (such as up, down, left, right, front, back...) in the embodiments of the present invention are only used to explain the relative position relationship, movement status, etc. between the various components under a certain specific posture (as shown in the accompanying drawings). If the specific posture changes, the directional indication will also change accordingly.

[0026] like Figures 1 to 5As shown, a battery pack housing includes:

[0027] The housing 100 has an opening 101, and the housing 100 is provided with a fixing edge extending outward from the opening 101, and the fixing edge is provided with a fixing hole 130 penetrating the fixing edge;

[0028] The cover plate 200 is detachably mounted on the housing 100 and includes a mounting surface 210 that is opposite to the opening 101 and blocks the opening 101. The mounting surface 210 is provided with a fixing column 220 that is opposite to the fixing hole 130 and has a threaded hole.

[0029] A bolt (not shown in the figure) is passed through the fixing hole 130 and connected to the threaded hole. By turning the bolt, the linear distance between the mounting surface 210 and the fixing edge can be adjusted. Since the fixing hole 130 is set on the housing 100, and the fixing column 220 is set on the mounting surface 210 of the cover plate 200 facing the housing 100, the bolt needs to pass through the fixing hole 130 from the back of the housing and connect to the threaded hole, so that the connection point between the bolt and the cover plate 200 is hidden inside the housing, avoiding the traces of the fixing hole 130 and the bolt on the surface of the cover plate 200, and avoiding the fixing hole 130 from being exposed to the user's line of sight, effectively ensuring the flatness and aesthetics of the surface of the cover plate 200. In addition, this design allows the stud to move along the axial direction of the shell during the tightening process, and drive the cover plate 200 to move synchronously toward the shell 100, so that the cover plate 200 will simultaneously apply an axial pressing force to the shell 100 to achieve a glue pressing operation, thereby eliminating the need for additional glue pressing operations, effectively simplifying the battery pack assembly process, and improving the battery pack assembly efficiency and maintenance convenience.

[0030] Specifically, if Figures 1 to 5 As shown, in this embodiment, the battery pack shell is mainly composed of a shell 100, a cover plate 200 and bolts, wherein the shell 100 is a plastic part, and the cover plate 200 and the bolts are both sheet metal parts. This design can not only reduce the overall weight of the shell, but also ensure the stability of the connection between the shell 100 and the cover plate 200 and the convenience of production.

[0031] In this embodiment, the housing 100 is rectangular and hollow, and is provided with a rectangular opening 101 connected to the outside to facilitate assembly of the battery cell assembly. The housing 100 is provided with a fixing edge extending outward along the opening 101, and the fixing edge is provided with a fixing hole 130 penetrating the housing. The design of the fixing edge and the fixing hole 130 provides a connection point for the connection between the housing 100 and the cover plate 200, and enables the bolts to connect the housing 100 and the cover plate 200 from the back of the housing 100, thereby making the fixing hole 130 out of the user's front sight range, thereby improving the overall aesthetics of the battery pack.

[0032] In this embodiment, the fixed edge includes a first extension edge 110 and a second extension edge 120, the first extension edge 110 extends outward along the periphery of the opening 101, the fixing hole 130 is provided on the first extension edge 110 and penetrates the first extension edge 110, and a plurality of fixing holes 130 are provided and arranged along the length direction of the first extension edge 110. This design realizes multi-point connection between the housing 100 and the cover plate 200, expands the connection area between the housing 100 and the cover plate 200, and effectively improves the stability and reliability of the connection between the housing 100 and the cover plate 200.

[0033] In this embodiment, a plurality of U-shaped grooves 111 are provided on the side of the first extension edge 110 away from the mounting surface 210, and the grooves 111 are recessed in the direction close to the fixing holes 130, corresponding to and connected with the fixing holes 130 one by one, and the inner diameter of the grooves 111 is greater than the diameter of the fixing holes 130. Preferably, the inner diameter of the grooves 111 is adapted to the head of the bolt, and this design enables the bolt head to be hidden in the grooves 111, thereby solving the problem of the protruding bolt head, ensuring the flatness of the first extension edge 110, and thus improving the overall aesthetics.

[0034] Since the housing 100 is a plastic part, it is easily deformed by the external environment, so that during the installation of the housing 100 and the cover plate 200, the fixing hole 130 cannot be well aligned with the threaded hole, which affects the installation efficiency and effect. Therefore, in this embodiment, a plurality of limiting structures 300 extending toward the installation surface 210 are provided on the side of the first extension edge 110 facing the installation surface 210. The limiting structures 300 correspond to the fixing holes 130 one by one and are coaxially connected, and the limiting structures 300 have limiting holes for the fixing columns 220 to extend into. When the fixing columns 220 extend into the limiting holes, the threaded holes are coaxial with the fixing holes 130. This design enables the fixing columns 220 to be first inserted into the limiting holes during the installation of the cover plate 200 and the housing 100, so that the limiting structures 300 can use the strength of the fixing columns 220 to correct the deformation of the fixing edge, ensure that the fixing holes 130 are coaxially aligned with the threaded holes, effectively simplify the installation process, and improve the reliability and accuracy of the connection.

[0035] In this embodiment, the limiting hole includes a cylindrical hole 310 and a conical hole 320 which are interconnected and integrally formed, the cylindrical hole 310 is located on the side close to the fixing hole 130, and the conical hole 320 is located on the side close to the mounting surface 210, wherein the diameter of the cylindrical hole 310 is adapted to the diameter of the fixing column 220, the diameter of the conical hole 320 at one end close to the mounting surface 210 is larger than the diameter of the fixing column 220, and the diameter of the conical hole 320 at one end away from the mounting surface 210 is adapted to the diameter of the fixing column 220. The design of the cylindrical hole 310 effectively ensures the precise alignment of the fixing column 220 with the fixing hole 130, while the design of the conical hole 320 allows a certain installation error, provides a guide for the insertion of the fixing column 220, thereby effectively improving the installation efficiency, accuracy and convenience of the cover plate 200 and the housing 100.

[0036] In this embodiment, the second extension edge 120 is connected to the side of the first extension edge 110 close to the cover plate 200, and is integrally formed with the first extension edge 110, wherein the second extension edge 120 is adapted to the length of the first extension edge 110 and is perpendicular to the mounting surface 210, and a sealant is provided between the second extension edge 120 and the mounting surface 210. This design not only provides a support point for the compression of the sealant, but also ensures the sealing performance after the cover plate 200 is connected to the housing 100.

[0037] In this embodiment, the second extension edge 120 is further provided with a plurality of isolation portions 121 corresponding to the limiting structures 300 one by one, the isolation portions 121 are in the shape of an arc plate, protrude toward the inside of the opening 101, and cooperate with the second extension edge 120 to form a cavity, the limiting structure 300 is in the cavity, and a sealant is provided between the isolation portions 121 and the mounting surface 210. This design makes the limiting structure 300 independent of the sealing area between the cover plate 200 and the housing 100, thereby avoiding the influence of bolts and other structures on the sealing inside the housing 100.

[0038] In this embodiment, the cover plate 200 is rectangular, and its size is adapted to the size of the housing 100, and includes a rectangular mounting surface 210 arranged opposite to the opening 101 and blocking the opening 101, wherein a cylindrical fixing column 220 arranged opposite to the fixing hole 130 is provided on the mounting surface 210, and the fixing column 220 extends toward the opening 101 and has a threaded hole. This design allows the connection point between the cover plate 200 and the housing 100 to be hidden inside the housing, avoiding the traces of the fixing hole 130 and the bolts on the surface of the cover plate 200, and effectively ensuring the flatness and aesthetics of the surface of the cover plate 200.

[0039] In this embodiment, the fixing column 220 is a sheet metal part, and is connected to the cover plate 200 by riveting. This design effectively improves the connection strength between the cover plate 200 and the housing 100, as well as the convenience of production. Moreover, the matching of the fixing column 220 and the cover plate 200 can effectively save the design of inserts compared to the existing plastic housing design, and reduces the difficulty of production while improving the connection strength.

[0040] In this embodiment, the cover plate 200 is further provided with a rim 230 vertically connected to the mounting surface 210 on the side facing the opening 101. The rim 230 is arranged along the circumference of the mounting surface 210 and covers the second extension edge 120. This design not only enhances the strength of the cover plate 200, expands the contact area between the cover plate 200 and the housing 100, making the connection between the two more secure, but also improves the overall appearance.

[0041] In order to ensure the sealing of the connection between the cover plate 200 and the housing 100, in this embodiment, a sealant (not shown in the figure) is further provided between the mounting surface 210 and the fixed edge. When the cover plate 200 is assembled on the housing 100, the sealant abuts against the mounting surface 210 and the fixed edge respectively. This design effectively improves the sealing after the cover plate 200 is connected to the housing 100, ensures the stability of the internal environment of the battery pack, and improves the protection level of the housing.

[0042] Preferably, in this embodiment, the sealant is a foamed sealant. Since the sealant is between the mounting surface 210 and the fixed edge, when the straight-line distance between the mounting surface 210 and the fixed edge is reduced by tightening the bolts, the mounting surface 210 and the fixed edge can squeeze the sealant. In other words, in the process of tightening the bolts, not only the connection between the cover plate 200 and the housing 100 can be achieved, but also the sealant can be compressed synchronously, thereby saving additional glue pressing operations, effectively simplifying the battery pack assembly process, and improving the assembly efficiency and maintenance convenience of the battery pack.

[0043] It should be noted that in the present utility model, descriptions such as "first", "second", "one", etc. are only used for descriptive purposes and cannot be understood as indicating or implying their relative importance or implicitly indicating the number of technical features indicated. Therefore, the features defined as "first" and "second" may explicitly or implicitly include at least one of the features. In the description of the present utility model, the meaning of "multiple" is at least two, such as two, three, etc., unless otherwise clearly and specifically defined. The terms "connected", "fixed", etc. should be understood in a broad sense. For example, "fixed" can be a fixed connection, a detachable connection, or an integral whole; it can be a mechanical connection or an electrical connection; it can be directly connected or indirectly connected through an intermediate medium, it can be the internal connection of two elements or the interaction relationship between two elements, unless otherwise clearly defined. For ordinary technicians in this field, the specific meanings of the above terms in the present utility model can be understood according to the specific circumstances.

[0044] In addition, the technical solutions between the various embodiments of the present invention can be combined with each other, but it must be based on the fact that ordinary technicians in the field can implement it. When the combination of technical solutions is contradictory or cannot be implemented, it should be deemed that such combination of technical solutions does not exist and is not within the scope of protection required by the present invention.

[0045] The specific embodiments described herein are merely examples of the spirit of the present invention. Those skilled in the art may make various modifications or additions to the specific embodiments described or replace them in similar ways, but they will not deviate from the spirit of the present invention or exceed the scope defined by the appended claims.

Claims

1. A battery pack housing, characterized in that: include: A shell, the shell having an opening, and the shell is provided with a fixing edge extending outward along the opening, and the fixing edge is provided with a fixing hole penetrating the fixing edge; A cover plate, the cover plate is detachably arranged on the housing, and comprises a mounting surface opposite to the opening and blocking the opening, a fixing column opposite to the fixing hole is arranged on the mounting surface, and the fixing column has a threaded hole; A bolt is passed through the fixing hole and connected to the threaded hole, and the linear distance between the mounting surface and the fixing edge can be adjusted by rotating the bolt.

2. A battery pack casing according to claim 1, characterized in that: A sealant is also provided between the mounting surface and the fixed edge. The sealant abuts against the mounting surface and the fixed edge respectively. When the linear distance decreases, the mounting surface and the fixed edge can squeeze the sealant.

3. A battery pack casing according to claim 2, characterized in that: The fixing edge includes a first extension edge, which extends outward along the periphery of the opening. The fixing hole is provided on the first extension edge and passes through the first extension edge. There are a plurality of fixing holes arranged along the length direction of the first extension edge.

4. A battery pack casing according to claim 3, characterized in that: A plurality of grooves are provided on the side of the first extension edge away from the mounting surface. The grooves are recessed in a direction close to the fixing holes, correspond to and communicate with the fixing holes one by one, and the inner diameter of the grooves is greater than the diameter of the fixing holes.

5. The battery pack housing according to claim 3, characterized in that: The first extension edge is provided with a plurality of limiting structures extending toward the mounting surface on the side facing the mounting surface, the limiting structures correspond to the fixing holes one by one and are coaxially connected, and the limiting structures have limiting holes for the fixing columns to extend into, and when the fixing columns extend into the limiting holes, the threaded holes are coaxial with the fixing holes.

6. A battery pack casing according to claim 5, characterized in that: The limiting hole includes a cylindrical hole and a conical hole which are interconnected, wherein the cylindrical hole is located on a side close to the fixing hole, and the conical hole is located on a side close to the mounting surface, wherein the diameter of the cylindrical hole is adapted to the diameter of the fixing column, the diameter of the conical hole at one end close to the mounting surface is larger than the diameter of the fixing column, and the diameter at one end away from the mounting surface is adapted to the diameter of the fixing column.

7. The battery pack housing according to claim 5, characterized in that: The fixed edge includes a second extending edge connected to the first extending edge, the second extending edge is adapted to the length of the first extending edge and is perpendicular to the mounting surface, and the sealant is disposed between the second extending edge and the mounting surface.

8. The battery pack housing according to claim 7, characterized in that: The second extension edge is also provided with a plurality of isolation parts corresponding to the limiting structures one by one. The isolation parts protrude toward the inside of the opening and cooperate with the second extension edge to form a cavity. The limiting structure is located in the cavity, and the sealant is provided between the isolation parts and the mounting surface.

9. The battery pack housing according to claim 7, characterized in that: The cover plate is also provided with a rim vertically connected to the mounting surface, the rim is arranged along the circumference of the mounting surface and covers the second extending edge.

10. The battery pack housing according to claim 1, characterized in that: The cover plate and the fixing column are both sheet metal parts, and the fixing column is connected to the cover plate by riveting.

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