Connector structure and battery pack

Abstract

The utility model relates to the technical field of batteries, and discloses a connector structure and a battery pack, and the connector structure comprises a reinforcing plate which is provided with a mounting hole; the connector body is arranged on the reinforcing plate; and the riveting column is connected with one surface, facing the reinforcing plate, of the connector body, and the riveting column is inserted into the mounting hole and is riveted with the reinforcing plate. According to the utility model, the connector body and the reinforcing plate are riveted and fixed by using the riveting column, that is, the connector body and the reinforcing plate are connected by using the riveting column by adopting a hot riveting process, so that the processing is convenient, the connection strength of the connector body and the reinforcing plate is improved, the firmness of the connector body on the reinforcing plate is improved, and the service life of the connector is prolonged. The connector body is prevented from loosening and even falling off, and the reliability of the connector structure is improved.

Description

Technical Field

[0001] This utility model relates to the field of battery technology, specifically to connector structure and battery pack. Background Technology

[0002] With the rapid development of electric vehicles, the requirements for battery pack energy density and safety are becoming increasingly stringent. To improve the energy density of the battery pack, it typically contains multiple cells connected in series and parallel to meet voltage and capacity requirements. For battery pack management, it is necessary to collect real-time information such as voltage and temperature data from the cells and promptly feed it back to the battery management system. Therefore, connectors are installed in the battery pack for signal acquisition and transmission. In existing technologies, connectors are usually connected to the battery module via a reinforcing plate. The back of the reinforcing plate is attached to the end plate or mounting surface of the battery module, and the connector is mounted on the front of the reinforcing plate. However, in existing technologies, mounting feet need to be welded to the front of the reinforcing plate, and the connector is then glued to the mounting feet for fixation. This results in insecure connector fixation and a tendency for the connector to detach. Utility Model Content

[0003] In view of this, the present invention provides a connector structure and a battery pack to solve the problem that the connector is not securely fixed in the prior art and is prone to falling off.

[0004] In a first aspect, the present invention provides a connector structure, comprising: a reinforcing plate having a mounting hole; a connector body disposed on the reinforcing plate; and a riveting post connected to the side of the connector body facing the reinforcing plate, wherein the riveting post is inserted into the mounting hole and riveted to the reinforcing plate.

[0005] In one optional embodiment, the mounting hole includes a first hole segment and a second hole segment that are connected together. The first hole segment is disposed close to the connector body relative to the second hole segment. In a direction perpendicular to the axis of the mounting hole, the opening cross-sectional area of ​​the first hole segment is smaller than the opening cross-sectional area of ​​the second hole segment, so that the hole wall of the mounting hole forms a stepped surface. The rivet post is inserted into the first hole segment and the second hole segment and abuts against the stepped surface.

[0006] In one optional embodiment, the first hole segment is a cylindrical hole with a diameter of D1, satisfying 4mm≤D1≤5mm; and / or, the second hole segment is a cylindrical hole with a diameter of D2, satisfying 9mm≤D2≤10mm.

[0007] In one optional embodiment, the height of the second hole segment along the axial direction of the mounting hole is H, satisfying 2mm≤H≤3mm.

[0008] In one optional embodiment, the riveting post includes a base portion and a deformable portion connected together. The base portion is located within a first hole segment, and the deformable portion is located within a second hole segment. The side of the deformable portion facing the base portion abuts against the stepped surface.

[0009] In one optional embodiment, the base part is a cylindrical structure with a diameter of d1, satisfying 3mm≤d1≤4mm; and / or, the deformable part is a cylindrical structure with a diameter of d2, satisfying 7mm≤d2≤8mm.

[0010] In one optional embodiment, the height of the deformed portion along the axial direction of the mounting hole is h, satisfying 1mm≤h≤2mm.

[0011] In one alternative embodiment, on a cross section perpendicular to the axial direction of the mounting hole, the contact point between the deformed portion and the stepped surface has a width e, satisfying 0.5mm≤e≤1mm.

[0012] In one optional embodiment, a plurality of mounting holes are spaced apart, and a plurality of riveting posts are provided, with the plurality of riveting posts corresponding to the plurality of mounting holes.

[0013] Secondly, this utility model also provides a battery pack, including the connector structure described above.

[0014] The technical solution of this application has the following advantages:

[0015] The connector body and the reinforcing plate are riveted together using rivet posts. In other words, the connector body and the reinforcing plate are connected by rivet posts using a hot riveting process. This not only facilitates processing but also improves the connection strength between the connector body and the reinforcing plate, enhances the firmness of the connector body on the reinforcing plate, prevents the connector body from loosening or even falling off, and improves the reliability of the connector structure. Attached Figure Description

[0016] To more clearly illustrate the specific embodiments of this utility model or the technical solutions in the prior art, the drawings used in the description of the specific embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are some embodiments of this utility model. For those skilled in the art, other drawings can be obtained from these drawings without creative effort.

[0017] Figure 1 This is a schematic diagram of a connector structure at one angle according to an embodiment of the present utility model;

[0018] Figure 2 for Figure 1 The connector structure shown is illustrated from another angle.

[0019] Figure 3 This is an exploded view of the connector structure according to an embodiment of the present invention;

[0020] Figure 4 This is a partial cross-sectional view of the connector structure along the axial direction of the riveting post, according to an embodiment of the present invention.

[0021] Explanation of reference numerals in the attached figures:

[0022] 1. Reinforcing plate; 11. Mounting hole; 111. First hole section; 112. Second hole section; 2. Connector body; 3. Riveting post; 31. Base section; 32. Deformation section. Detailed Implementation

[0023] To make the objectives, technical solutions, and advantages of the embodiments of this utility model clearer, the technical solutions of the embodiments of this utility model will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of this utility model, not all embodiments. Based on the embodiments of this utility model, all other embodiments obtained by those skilled in the art without creative effort are within the protection scope of this utility model.

[0024] The following is combined with Figures 1 to 4 The following describes embodiments of the present invention.

[0025] According to an embodiment of the present invention, a connector structure is provided, comprising: a reinforcing plate 1, a connector body 2, and a riveting post 3. The reinforcing plate 1 has a mounting hole 11, the connector body 2 is disposed on the reinforcing plate 1, and the riveting post 3 is connected to the side of the connector body 2 facing the reinforcing plate 1. The riveting post 3 is inserted into the mounting hole 11 and riveted to the reinforcing plate 1.

[0026] In this embodiment, the connector structure uses rivet posts 3 to rivet and fix the connector body 2 and the reinforcing plate 1. That is, the connector body 2 and the reinforcing plate 1 are connected by rivet posts 3 using a hot riveting process. This facilitates processing, improves the connection strength between the connector body 2 and the reinforcing plate 1, enhances the firmness of the connector body 2 on the reinforcing plate 1, prevents the connector body 2 from loosening or even falling off, and improves the reliability of the connector structure.

[0027] It is worth noting that since the back side of the reinforcing plate 1 (the side facing away from the connector body 2) needs to be in contact with the end plate or mounting base of the battery module, the back side of the reinforcing plate 1 needs to be kept flat. In related technologies, the fixing feet are welded to the front side of the reinforcing plate 1, but the fixing feet cannot be welded to the back side of the reinforcing plate 1 (using soldering will cause bulges on the reinforcing plate 1, affecting the fit between the reinforcing plate 1 and the end plate or mounting base of the battery module), resulting in poor fixing of the fixing feet.

[0028] In this embodiment, the connector body 2 and the reinforcing plate 1 are riveted and fixed by the riveting post 3, so that the riveting post 3 is located in the mounting hole 11 on the reinforcing plate 1. This can ensure the flatness of the back of the reinforcing plate 1 and improve the firmness of the connection between the connector body 2 and the reinforcing plate 1.

[0029] In one embodiment, such as Figure 4 As shown, the mounting hole 11 includes a first hole segment 111 and a second hole segment 112 that are connected together. The first hole segment 111 is disposed close to the connector body 2 relative to the second hole segment 112. In the direction perpendicular to the axis of the mounting hole 11, the opening cross-sectional area of ​​the first hole segment 111 is smaller than the opening cross-sectional area of ​​the second hole segment 112, so that the hole wall of the mounting hole 11 forms a stepped surface. The riveting post 3 is inserted into the first hole segment 111 and the second hole segment 112 and abuts against the stepped surface.

[0030] Furthermore, in one embodiment, such as Figure 4 As shown, the riveting post 3 includes a base part 31 and a deformable part 32 connected together. The base part 31 is located in the first hole section 111, and the deformable part 32 is located in the second hole section 112. The side of the deformable part 32 facing the base part 31 is abutted against the step surface.

[0031] It is worth noting that the axial direction of the mounting hole 11 is the same as the thickness direction of the reinforcing plate 1, that is... Figure 4 The vertical direction in the middle, therefore, the direction perpendicular to the axis of the mounting hole 11 is the vertical direction. Figure 4 The horizontal direction in the middle.

[0032] It should be noted that the structures of the first hole segment 111 and the base part 31 can be the same or different. For example, when the structures of the first hole segment 111 and the base part 31 are the same, the first hole segment 111 is a cylindrical hole, and the base part 31 is a cylindrical structure; or, the first hole segment 111 is a prism-shaped hole, and the base part 31 is a prism-shaped structure. For example, when the structures of the first hole segment 111 and the base part 31 are different, the first hole segment 111 is a cylindrical hole, and the base part 31 is a prism-shaped structure; or, the first hole segment 111 is a prism-shaped hole, and the base part 31 is a cylindrical structure.

[0033] It should be further explained that the structures of the second hole segment 112 and the deformed part 32 can be the same or different. For example, when the structures of the second hole segment 112 and the deformed part 32 are the same, the second hole segment 112 is a cylindrical hole, and the deformed part 32 is a cylindrical structure; or, the second hole segment 112 is a prism-shaped hole, and the deformed part 32 is a prism-shaped structure. For example, when the structures of the second hole segment 112 and the deformed part 32 are different, the second hole segment 112 is a cylindrical hole, and the deformed part 32 is a prism-shaped structure; or, the second hole segment 112 is a prism-shaped hole, and the deformed part 32 is a cylindrical structure.

[0034] That is, it is only necessary to ensure that the base part 31 can be located in the first hole section 111, the deformable part 32 can be located in the second hole section 112, and the deformable part 32 can abut against the step surface to achieve riveting fixation.

[0035] Specifically, in one embodiment, such as Figure 4 As shown, the first hole segment 111 is a cylindrical hole with a diameter of D1, which satisfies 4mm≤D1≤5mm.

[0036] Specifically, in one embodiment, such as Figure 4 As shown, the second hole segment 112 is a cylindrical hole with a diameter of D2, which satisfies 9mm≤D2≤10mm.

[0037] This design ensures that the base part 31 and the deformable part 32 can be accommodated, while also ensuring that the stepped surface has sufficient width to facilitate the mating and engagement of the deformable part 32 with the stepped surface.

[0038] It is worth noting that if the diameter difference between the first hole segment 111 and the second hole segment 112 is too small, the width of the resulting step surface will be too small, making it difficult to abut against the deformed part 32. This will prevent the abutment width between the deformed part 32 and the step surface from being guaranteed, and thus the riveting strength between the riveting post 3 and the reinforcing plate 1 cannot be guaranteed. If the diameter difference between the first hole segment 111 and the second hole segment 112 is too large, that is, if the diameter of the first hole segment 111 is too small, the diameter of the base part 31 that abuts against the first hole segment 111 will be even smaller, resulting in a weaker structural strength of the riveting post 3 and affecting the riveting firmness. Alternatively, if the diameter of the second hole segment 112 is too large, the opening range of the second hole segment 112 on the reinforcing plate 1 will be too large, affecting the structural strength of the reinforcing plate 1.

[0039] Specifically, in one embodiment, such as Figure 4 As shown, along the axial direction of the mounting hole 11, the height of the second hole section 112 is H, which satisfies 2mm≤H≤3mm. This setting ensures that the second hole section 112 has sufficient height to accommodate the deformed part 32, while also facilitating the machining and forming of the deformed part 32 on the riveting post 3.

[0040] It is worth noting that if the height of the second hole segment 112 is too small, it cannot accommodate the deformable part 32, and the deformable part 32 is likely to protrude from the back of the reinforcing plate 1, affecting the fit between the reinforcing plate 1 and the battery module; if the height of the second hole segment 112 is too large, it is not convenient for the processing and forming of the deformable part 32.

[0041] Specifically, in one embodiment, such as Figure 4 As shown, the base part 31 is a cylindrical structure with a diameter of d1, which satisfies 3mm≤d1≤4mm.

[0042] Specifically, in one embodiment, such as Figure 4 As shown, the deformable part 32 is a cylindrical structure with a diameter of d2, which satisfies 7mm≤d2≤8mm.

[0043] This design ensures the structural strength of the rivet column 3 itself, while facilitating the processing and forming of the deformable part 32 and the contact and cooperation between the deformable part 32 and the step surface, thus guaranteeing the riveting strength between the rivet column 3 and the reinforcing plate 1.

[0044] It is worth noting that the column before riveting is a cylindrical structure. After being processed by hot riveting, the column is formed into a riveted column 3 with a base part 31 and a deformable part 32.

[0045] Specifically, in one embodiment, such as Figure 4 As shown, along the axial direction of the mounting hole 11, the height of the deformable part 32 is h, satisfying 1mm≤h≤2mm. This setting ensures the riveting strength between the riveting post 3 and the reinforcing plate 1, while also placing the deformable part 32 within the second hole section 112, thus avoiding any impact on the flatness of the back surface of the reinforcing plate 1.

[0046] Specifically, in one embodiment, such as Figure 4 As shown, in a cross-section perpendicular to the axis of the mounting hole 11, the contact area between the deformed part 32 and the stepped surface has a width e, satisfying 0.5mm≤e≤1mm. This arrangement facilitates the processing and forming of the deformed part 32 while ensuring the riveting strength between the riveting post 3 and the reinforcing plate 1.

[0047] In one embodiment, such as Figure 2 and Figure 3 As shown, a number of mounting holes 11 are spaced apart, and a number of riveting posts 3 are provided, with each number of riveting posts 3 corresponding to a number of mounting holes 11. Specifically, the number of riveting posts 3 and mounting holes 11 can be determined according to the volume of the connector body 2 and the required riveting strength.

[0048] It should be noted that in this embodiment, the connector body 2 is an FPC patch connector.

[0049] When assembling the connector structure of this embodiment, firstly, a mounting hole 11 is opened on the reinforcing plate 1; then, the post of the connector body 2 before riveting is inserted into the mounting hole 11; finally, the post is processed by hot riveting process to form a riveting post 3 with a base part 31 and a deformable part 32, and is riveted and fixed with the reinforcing plate 1.

[0050] According to an embodiment of the present invention, another aspect provides a battery pack including the connector structure described above.

[0051] Although embodiments of the present invention have been described in conjunction with the accompanying drawings, those skilled in the art can make various modifications and variations without departing from the spirit and scope of the present invention, and such modifications and variations all fall within the scope defined by the appended claims.

Claims

1. A connector structure, characterized in that, include: The reinforcing plate has mounting holes. The connector body is disposed on the reinforcing plate; A rivet post is connected to the side of the connector body facing the reinforcing plate. The rivet post is inserted into the mounting hole and riveted to the reinforcing plate.

2. The connector structure according to claim 1, characterized in that, The mounting hole includes a first hole segment and a second hole segment that are connected together. The first hole segment is disposed close to the connector body relative to the second hole segment. In the direction perpendicular to the axis of the mounting hole, the opening cross-sectional area of ​​the first hole segment is smaller than the opening cross-sectional area of ​​the second hole segment, so that the hole wall of the mounting hole forms a stepped surface. The rivet post is inserted into the first hole segment and the second hole segment and abuts against the stepped surface.

3. The connector structure according to claim 2, characterized in that, The first hole segment is a cylindrical hole, and the diameter of the first hole segment is D1, satisfying 4mm ≤ D1 ≤ 5mm; and / or, The second hole section is a cylindrical hole with a diameter of D2, which satisfies 9mm≤D2≤10mm.

4. The connector structure according to claim 2, characterized in that, Along the axial direction of the mounting hole, the height of the second hole segment is H, which satisfies 2mm≤H≤3mm.

5. The connector structure according to any one of claims 2 to 4, characterized in that, The riveting post includes a base portion and a deformable portion connected together. The base portion is located within the first hole section, and the deformable portion is located within the second hole section. The side of the deformable portion facing the base portion abuts against the stepped surface.

6. The connector structure according to claim 5, characterized in that, The base is a cylindrical structure with a diameter d1, satisfying 3mm ≤ d1 ≤ 4mm; and / or, The deformable part is a cylindrical structure with a diameter of d2, which satisfies 7mm≤d2≤8mm.

7. The connector structure according to claim 5, characterized in that, Along the axial direction of the mounting hole, the height of the deformed part is h, which satisfies 1mm≤h≤2mm.

8. The connector structure according to claim 5, characterized in that, On a cross section perpendicular to the axis of the mounting hole, the contact point between the deformed portion and the stepped surface has a width e, satisfying 0.5mm≤e≤1mm.

9. The connector structure according to any one of claims 1 to 4, characterized in that, The mounting holes are spaced apart by a number of holes, and the riveting posts are provided in a number of positions, with each riveting post corresponding to a number of mounting holes.

10. A battery pack, characterized in that, The connector structure includes any one of claims 1 to 9.

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