Pole connecting structure and battery module

Abstract

The utility model discloses a pole connecting structure and a battery module, the pole connecting structure comprises a shell, a connecting sheet and a pole body, the connecting sheet is arranged on the outer side of the shell; one end of the pole body is arranged on the inner side of the shell, and the other end of the pole body penetrates through the shell and then is fixed with the connecting piece in a press riveting manner, and a convex part structure lower than the surface of the connecting piece is formed. In the pole connecting structure, the pole body and the connecting sheet are fixed by adopting a riveting process, so that the stability and the reliability of connection are enhanced, and the yield of products is improved; and the pole bodies are directly communicated through the connecting sheets, so that a large amount of palladium sheet welding is omitted, the production efficiency can be effectively improved, and the material and equipment cost is reduced.

Description

TECHNICAL FIELD

[0001] The utility model relates to battery manufacturing technical field especially relates to a pole post connecting structure and battery module. BACKGROUND

[0002] In the traditional multi-battery pole post connecting mode, the communication between pole posts is usually realized by palladium sheet welding. However, this mode still has some obvious defects, for example:

[0003] 1. The cost of palladium sheet welding equipment is high, and large-scale use will significantly increase the production cost;

[0004] 2. The palladium sheet welding process is complex, which requires high technical level and operation precision, not only increases the labor cost, but also is prone to poor welding problems, affecting product quality.

[0005] Therefore, how to reduce the cost and improve the reliability of the pole post connection has become an important problem urgently needed to be solved in the industry. UTILITY MODEL CONTENTS

[0006] The utility model aims at providing a pole post connecting structure and battery module, which replaces the traditional welding process by riveting process, improves the connection quality between palladium sheet and battery pole post, and effectively reduces the production cost.

[0007] The utility model adopts the following technical solutions:

[0008] A pole post connecting structure comprises:

[0009] A shell;

[0010] A connecting sheet arranged on the outer side of the shell;

[0011] A pole post body arranged at one end of the inner side of the shell and fixed by riveting with the connecting sheet after penetrating through the shell, and forming a convex structure lower than the surface of the connecting sheet.

[0012] In some embodiments, the connecting sheet includes but is not limited to a palladium sheet.

[0013] In some embodiments, the surface of the shell is provided with a sheet groove matched with the connecting sheet.

[0014] In some embodiments, a column hole is arranged in the sheet groove and matched with the pole post body.

[0015] In some embodiments, a sealing ring is arranged between the column hole and the pole post body.

[0016] In some embodiments, a riveting hole is arranged on the connecting sheet, and the riveting hole is matched with the pole body.

[0017] In some embodiments, a diameter expansion groove is arranged on one end of the riveting hole away from the shell, and the diameter expansion groove is matched with the convex structure.

[0018] In some embodiments, a wire harness terminal is arranged on the connecting sheet, and the wire harness terminal is fixedly welded with the connecting sheet.

[0019] In some embodiments, a positioning hole is arranged on the pole body through the center of one end of the shell.

[0020] A battery module comprising the pole connecting structure.

[0021] Compared with the prior art, the beneficial effects of the utility model at least include:

[0022] 1. The riveting process is adopted to fix the pole body and the connecting sheet, the stability and reliability of the connection are enhanced, and the yield of the product is improved.

[0023] 2. The pole bodies are directly communicated through the connecting sheet, a large number of palladium sheets are saved, the production efficiency is effectively improved, and the material and equipment costs are reduced. BRIEF DESCRIPTION OF DRAWINGS

[0024] Figure 1 is a schematic view of the pole connecting structure of the utility model.

[0025] Figure 2 is a schematic view of the battery module of the utility model.

[0026] In the drawing: 1, shell; 11, sheet groove; 12, column hole; 2, connecting sheet; 21, riveting hole; 22, diameter expansion groove; 3, pole body; 31, convex structure; 32, positioning hole; 4, sealing ring; 5, wire harness terminal. DETAILED DESCRIPTION

[0027] Example implementations will now be described more fully with reference to the accompanying drawings. Example implementations, however, can be implemented in many different forms and should not be construed as limited to the implementations set forth herein; rather, these implementations are provided so that this disclosure will be thorough and complete, and fully convey the inventive aspects of example implementations to those skilled in the art. Identical reference numerals refer to the same or similar elements throughout the several views of the drawings and like elements are referred to like numerals throughout the several figures of the drawing, and so description of the same will be simplified or omitted.

[0028] The words expressing position and direction described in the utility model are all illustrated by taking the drawing as an example, but changes can also be made according to needs, and the changes made are all included in the protection scope of the utility model.

[0029] Referring to Figure 1 As shown in the utility model discloses a kind of pole connecting structure, including shell 1, connecting sheet 2 and pole body 3.

[0030] Wherein, connecting sheet 2 is arranged at the outside of shell 1, and the surface of shell 1 is provided with sheet slot 11 matched with connecting sheet 2, and connecting sheet 2 can be placed in the sheet slot 11.

[0031] Connecting sheet 2 is used to connect the pole body 3 on battery monomer or module, to ensure the smooth transmission of current, and in the application, connecting sheet 2 is preferably palladium sheet, which has excellent conductivity and corrosion resistance, and can effectively improve the overall performance of the battery. In addition to palladium sheet, connecting sheet 2 can also be copper sheet, aluminum sheet, nickel sheet, etc.

[0032] One end of the pole body 3 is arranged inside the shell 1, and the other end is fixed by riveting after penetrating the shell 1 and connecting with the connecting sheet 2, and the sheet slot 11 of the shell 1 is provided with a column hole 12, and the connecting sheet 2 is provided with a riveting hole 21, and the column hole 12 and the riveting hole 21 are coaxially arranged and matched with the pole body 3. When riveting, the pole body 3 penetrates the column hole 12 and the riveting hole 21 in turn, and then the end part is extruded, so that the connecting sheet 2 and the pole body 3 are riveted together.

[0033] As Figure 1 shown, after riveting, the end of the pole body 3 away from the shell 1 forms a convex structure 31 lower than the surface of the connecting sheet 2, and the end of the riveting hole 21 away from the shell 1 is provided with an expansion slot 22, which can be circular or conical and matched with the convex structure 31, and the convex structure 31 is located in the expansion slot 22, so that the connecting sheet 2 and the pole body 3 are stably fixed.

[0034] In addition, in the design, the convex structure 31 of the pole body 3 riveted in place is lower than the surface of the connecting sheet 2, and after riveting, the machine / artificial vision can quickly and clearly determine whether the riveting is in place, so as to screen out the defective products and improve the yield of the products. On the other hand, because the convex structure 31 is lower than the surface of the connecting sheet 2, the surface of the connecting sheet 2 can remain flat, which is beneficial to subsequent process operation, such as welding or positioning.

[0035] As Figure 1 shown, in some embodiments, a sealing ring 4 is arranged between the column hole 12 and the pole body 3, which effectively isolates the pole body 3 from direct contact with the external environment, prevents leakage and short circuit, etc. In addition, the sealing ring 4 can also fasten the pole body 3, prevent it from loosening or falling off, and improve the overall performance and service life of the product.

[0036] In some embodiments, a wire harness terminal 5 is arranged on the connecting piece 2 for quick connection of the circuit, and the wire harness terminal 5 and the connecting piece 2 can be fixed by means of soldering, ultrasonic welding, laser welding, etc.

[0037] In some embodiments, the pole body 3 is provided with a positioning hole 32 at the center of one end of the shell 1, which plays a positioning role when riveting, ensuring the accuracy of the riveting position.

[0038] In summary, the pole connecting structure of the present application adopts a riveting method instead of the traditional welding method, thereby enhancing the stability and reliability between the pole body 3 and the connecting piece 2 and improving the yield of the product. In addition, the pole bodies 3 are directly connected through the connecting (palladium sheet), thereby saving a large amount of palladium sheet welding, effectively improving the production efficiency, and reducing the material and equipment costs.

[0039] Referring to Figure 2 The utility model discloses still a kind of battery module, including the pole connecting structure described above, in the battery module, battery monomer (not shown) can be connected in series or parallel through pole connecting structure.

[0040] Although the embodiments of the utility model have been shown and described above, it can be understood that the above-mentioned embodiments are exemplary, and cannot be understood as limiting the utility model, and the ordinary skilled in the art can change, modify, replace and transform the above-mentioned embodiments without departing from the principles and purposes of the utility model within the scope of the utility model, and all these changes should belong to the protection scope of the utility model claim.

Claims

1. A pole post connection structure, characterized in that, include: Shell (1); A connecting piece (2) is disposed on the outside of the housing (1); The pole body (3) has one end located inside the housing (1) and the other end passing through the housing (1) and being riveted to the connecting piece (2), forming a protrusion structure (31) lower than the surface of the connecting piece (2).

2. The pole post connection structure according to claim 1, characterized in that, The connecting piece (2) includes, but is not limited to, a palladium sheet.

3. The pole post connection structure according to claim 1, characterized in that, The surface of the housing (1) is provided with a groove (11), which matches the connecting piece (2).

4. The pole post connection structure according to claim 3, characterized in that, The slot (11) is provided with a column hole (12), which matches the pole body (3).

5. The pole post connection structure according to claim 4, characterized in that, A sealing ring (4) is provided between the post hole (12) and the pole body (3).

6. The pole post connection structure according to claim 1, characterized in that, The connecting piece (2) is provided with a riveting hole (21), which matches the pole body (3).

7. The pole post connection structure according to claim 6, characterized in that, The end of the rivet hole (21) away from the housing (1) is provided with an enlarged groove (22), which matches the protrusion structure (31).

8. The pole post connection structure according to claim 1, characterized in that, The connecting piece (2) is provided with a wire harness terminal (5), and the wire harness terminal (5) is welded and fixed to the connecting piece (2).

9. The pole post connection structure according to claim 1, characterized in that, The pole body (3) has a positioning hole (32) at the center of one end that penetrates the housing (1).

10. A battery module, characterized in that, Includes the pole connection structure as described in any one of claims 1-9.

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