New energy battery copper bar riveting structure

Abstract

The utility model provides a new energy battery copper bar riveting structure which comprises a copper bar part and a connecting column, a riveting hole is formed in the copper bar part, and a riveting extension step part is arranged at the upper end of the riveting hole; limiting parts are arranged at the positions, close to the upper ends, of the connecting columns, and the upper ends of the connecting columns are inserted into the riveting holes from bottom to top till being flush with the upper end faces of the riveting extending step parts. The copper bar part is provided with the riveting hole, and the upper end of the hole is provided with the special riveting extension step part. The step part is designed to provide a clear limiting plane, so that the connecting column can accurately stop on the plane in the riveting process, and the upper surface of the copper bar cannot be bulged due to continuous upward extrusion. According to the invention, the protrusions are eliminated, so that the surface of the copper bar does not need to be leveled through an additional polishing process, the machining process is simplified, the production efficiency is improved, and the machining cost is reduced.

Description

Technical Field

[0001] This application relates to the field of copper busbar processing for new energy batteries, and particularly to a copper busbar riveting and pressing structure for new energy batteries. Background Art

[0002] When riveting connection columns on the copper busbar of a new energy battery, directly adopting the traditional riveting method will indeed cause a bulge to form on the upper surface of the copper busbar. This bulge not only affects the aesthetics of the copper busbar but may also have a certain impact on the overall performance and installation of the battery. In order to eliminate this bulge, an additional grinding process is usually required to flatten the surface of the copper busbar, which undoubtedly increases the complexity and cost of the processing technology. Utility Model Content

[0003] The purpose of this application is to provide a copper busbar riveting and pressing structure for new energy batteries that can avoid the generation of bulges and improve processing efficiency and product quality.

[0004] To achieve the above purpose, this application provides the following technical solutions:

[0005] A copper busbar riveting and pressing structure for new energy batteries, including a copper busbar part and a connection column. There is a riveting hole on the copper busbar part, and a riveting extension step part is provided at the upper end of the riveting hole; a limiting part is provided near the upper end of the connection column, and the upper end of the connection column is inserted into the riveting hole from bottom to top until it is flush with the upper end surface of the riveting extension step part.

[0006] Further, the copper busbar part includes a horizontal part and a vertical part, and an installation hole is provided on the vertical part.

[0007] Further, a first weld filling part is provided at the upper end of the connection column.

[0008] Further, a second weld filling part is provided at the edge of the riveting extension step part.

[0009] Further, a limiting groove is provided on the inner wall of the riveting hole.

[0010] Further, a reinforcing rib is provided on the outer circumference of the upper end of the connection column corresponding to the limiting groove, and the reinforcing rib can be inserted into the limiting groove from bottom to top.

[0011] The beneficial effects of this application are:

[0012] (1) This application designs a riveting hole on the copper busbar part, and a special riveting extension step part is provided at the upper end of this hole. The design of this step part is to provide a clear limiting plane, so that the connection column can accurately stop on this plane during the riveting process and will not continue to squeeze upward to cause a bulge on the upper surface of the copper busbar.

[0013] (2) Since the protrusions are eliminated in this application, there is no need for additional grinding processes to flatten the surface of the copper busbar, thus simplifying the processing technology, improving production efficiency, and reducing processing costs.

[0014] (3) The elimination of the protrusions in this application not only enhances the aesthetics of the copper busbar, but more importantly, avoids the adverse effects that the protrusions may have on the overall performance and installation of the battery, thereby improving the quality and reliability of the product.

[0015] (4) In the riveting structure of this application, through the cooperation of the limiting part and the riveting extension step part, the connection between the connecting column and the copper busbar is made more firm, enhancing the strength and stability of the connection. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 is a schematic structural diagram of the copper busbar riveting structure of a new energy battery provided by an embodiment of this application;

[0017] Figure 2 is a schematic structural diagram of the disassembled copper busbar riveting structure of a new energy battery provided by an embodiment of this application;

[0018] Figure 3 is a top view of the copper busbar riveting structure of a new energy battery provided by an embodiment of this application;

[0019] Figure 4 is Figure 3 a cross-sectional view taken at A-A;

[0020] Figure 5 is a cross-sectional view of the copper busbar riveting structure of a new energy battery provided by another embodiment of this application and a partial enlarged view of the first weld filling portion and the second weld filling portion;

[0021] Figure 6 is a schematic structural diagram of the disassembled copper busbar riveting structure of a new energy battery provided by another embodiment of this application;

[0022] Figure 7 is a cross-sectional view of the copper busbar riveting structure of a new energy battery provided by another embodiment of this application.

[0023] DESCRIPTION OF THE REFERENCE NUMERALS:

[0024] 1. Copper busbar part; 2. Connecting column;

[0025] 11. Riveting hole; 12. Riveting extension step part; 13. Horizontal part; 14. Vertical part; 15. Mounting hole; 16. Second weld filling portion;

[0026] 111. Limiting groove;

[0027] 21. Limiting part; 22. First weld filling portion; 23. Reinforcing rib; Detailed Implementation Manner

[0028] The terms used in the implementation manner part of this application are only for explaining the specific embodiments of this application, rather than aiming to limit this application. The implementation manners of the embodiments of this application will be described in detail below with reference to the accompanying drawings.

[0029] As Figure 1 shown, a copper bar riveting structure for a new energy battery includes a copper bar portion 1 and a connecting column 2.

[0030] As Figure 2 shown, the copper bar portion 1 has a riveting hole 11, which serves as the position for the connecting column 2 to be inserted and fixed, realizing the mechanical connection between the copper bar and the connecting column 2. The copper bar portion 1 is usually made of copper or copper alloy materials because of its good electrical conductivity and mechanical properties.

[0031] The upper end of the riveting hole 11 has a riveting extension step portion 12; the riveting hole 11 and the riveting extension step portion 12 can be formed by mechanical processing methods such as stamping and drilling. Specifically, first, the preliminary shape of the hole is punched on the copper bar portion 1 through the stamping process, and then the riveting hole 11 is accurately machined through the drilling process, and at the same time, the riveting extension step portion 12 is formed.

[0032] The connecting column 2, as the main part for transmitting current and mechanical connection, is tightly connected to the copper bar portion 1 by riveting. The connecting column is also made of copper or copper alloy materials to ensure good electrical conductivity and compatibility with the copper bar portion 1. The limiting portion 21 can be directly machined on the connecting column 2 by mechanical processing methods such as turning and milling, or can be preformed by processes such as casting and forging.

[0033] As Figure 4 shown, a limiting portion 21 is provided near the upper end of the connecting column 2, which is arranged near the upper end of the connecting column 2 and is used to limit the insertion depth of the connecting column 2 during the riveting process, ensuring that it is flush with the upper end surface of the riveting extension step portion 12, so as to achieve accurate positioning and connection. The upper end of the connecting column 2 is inserted into the riveting hole 11 from bottom to top until the limiting portion 21 is flush with the upper end surface of the riveting extension step portion 12. Pressure is applied to the connecting column 2 through a riveting device to form a tight mechanical connection between it and the copper bar portion 1 at the riveting hole 11. During the riveting process, the contact surface between the connecting column 2 and the copper bar portion 1 will undergo plastic deformation, thus realizing a reliable connection.

[0034] The copper bar riveting structure of the new energy battery in this embodiment has the advantages of simple structure, reliable connection, easy processing and installation, etc. By setting the riveting extension step portion 12 and the limiting portion 21, it is possible to ensure the accurate positioning and connection strength between the connecting column 2 and the copper bar portion 1, and improve the safety and stability of the entire battery system.

[0035] As Figure 2As shown, in this embodiment, the copper busbar portion 1 includes a horizontal portion 13 and a vertical portion 14, and an installation hole 15 is provided on the vertical portion 14.

[0036] As Figure 5 shown, in this embodiment, a first weld filling portion 22 is provided at the upper end of the connecting column 2. The first weld filling portion 22 is tightly combined with the copper busbar portion 1 through a welding process to form a strong weld, thereby significantly enhancing the connection strength between the connecting column 2 and the copper busbar portion 1.

[0037] As Figure 5 shown, in this embodiment, a second weld filling portion 16 is provided at the edge of the riveting extension step portion 12. The second weld filling portion 16 is tightly combined with the edge of the riveting extension step portion 12 and the connecting column 2 through a welding process to form a more solid weld area. This not only increases the contact area between the connecting column 2 and the copper busbar portion 1, but also significantly improves the overall connection strength through the strengthening effect of the weld.

[0038] The first weld filling portion 22 is provided at the upper end of the connecting column 2 and the second weld filling portion 16 is provided at the edge of the riveting extension step portion 12. The combined effect of the two is mainly reflected in the following aspects:

[0039] As Figure 5 shown, the connecting column 2 and the copper busbar portion 1 are tightly connected through a welding process to form a solid weld area. This significantly increases the contact area between the connecting column 2 and the copper busbar portion 1, thereby improving the connection strength and stability. The small gap between the edge of the riveting extension step portion 12 and the connecting column 2 is filled, further strengthening the structure of the connection point. At the same time, it also helps to disperse the stress concentration at the connection point and improve the overall fatigue resistance. The combined effect of the two makes the connection between the connecting column 2 and the copper busbar portion 1 more firm and reliable, and can withstand various mechanical actions from inside and outside the battery system.

[0040] As Figure 6 shown, in this embodiment, a limiting groove 111 is provided on the inner wall of the riveting hole 11.

[0041] As Figure 6 shown, in this embodiment, a reinforcing rib 23 is provided on the outer periphery of the upper end of the connecting column 2 corresponding to the limiting groove 111, and the reinforcing rib 23 can be inserted into the limiting groove 111 from bottom to top.

[0042] The limiting groove 111 provides an accurate insertion position for the connecting column 2, ensuring that the connecting column 2 can be accurately aligned with the copper busbar portion 1 during the riveting process.

[0043] Once the connecting column 2 is inserted into the limiting groove 111, its rotational movement will be restricted, thereby preventing the connecting column 2 from rotating when stressed and enhancing the connection stability.

[0044] The design of the limiting groove 111 increases the contact area between the connecting column 2 and the copper busbar part 1, which helps to disperse stress and improve the load-bearing capacity of the connection.

[0045] The reinforcing rib 23 is inserted into the limiting groove 111, forming an additional mechanical connection point, which significantly enhances the connection strength between the connecting column 2 and the copper busbar part 1.

[0046] The combined action of the limiting groove 111 and the reinforcing rib 23 makes the connection between the connecting column 2 and the copper busbar part 1 more firm and stable, capable of withstanding greater loads and harsher working environments.

[0047] In the description of the embodiments of the present application, it should be noted that, unless otherwise clearly specified and limited, the terms "installation", "connection", and "coupling" should be understood in a broad sense. For example, it may be a fixed connection, or an indirect connection through an intermediate medium, or the internal communication of two components or the interaction relationship between two components. For those of ordinary skill in the art, the specific meanings of the above terms in the embodiments of the present application can be understood according to specific circumstances.

[0048] The device or element referred to in the embodiments of the present application or implied must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as a limitation on the embodiments of the present application. In the description of the embodiments of the present application, the meaning of "a plurality" is two or more, unless otherwise specifically and precisely specified.

[0049] The terms "first", "second", "third", "fourth", etc. (if any) in the description of the embodiments of the present application, the claims and the above drawings are used to distinguish similar objects, and do not necessarily need to describe a specific order or sequence. It should be understood that such data can be interchanged under appropriate circumstances, so that the embodiments of the present application described herein, for example, can be implemented in an order other than those illustrated or described herein. In addition, the terms "may include" and "have" and any variations thereof are intended to cover non-exclusive inclusion. For example, a process, method, system, product or device that includes a series of steps or units does not necessarily have to be limited to those steps or units clearly listed, but may include other steps or units not clearly listed or inherent to these processes, methods, products or devices.

[0050] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of the embodiments of the present application, rather than limiting them. Although the embodiments of the present application have been described in detail with reference to the foregoing embodiments, those of ordinary skill in the art should understand that they can still modify the technical solutions described in the foregoing embodiments, or perform equivalent replacements for some or all of the technical features. These modifications or replacements do not cause the essence of the corresponding technical solutions to deviate from the scope of the technical solutions of the embodiments of the present application.

Claims

1. A copper bar riveting and pressing structure for a new energy battery, characterized in that: It includes a copper busbar part and a connecting column. There is a riveting hole on the copper busbar part, and a riveting extension step part is provided at the upper end of the riveting hole. A limiting part is provided near the upper end of the connecting column. The upper end of the connecting column is inserted into the riveting hole from bottom to top until it is flush with the upper end surface of the riveting extension step part.

2. The copper bar riveting and pressing structure of a new energy battery according to claim 1, characterized in that: The copper busbar part includes a horizontal part and a vertical part, and an installation hole is provided on the vertical part.

3. The copper bar riveting and pressing structure of a new energy battery according to claim 1, wherein: A first weld filling part is provided at the upper end of the connecting column.

4. A copper bar riveting and pressing structure for a new energy battery according to claim 1, characterized in that: A second weld filling part is provided at the edge of the riveting extension step part.

5. A copper busbar riveting and pressing structure for a new energy battery according to claim 1, characterized in that: A limiting groove is provided on the inner wall of the riveting hole.

6. A copper busbar riveting and pressing structure for a new energy battery according to claim 5, characterized in that: Reinforcing ribs are provided on the outer periphery of the upper end of the connecting column corresponding to the limiting groove, and the reinforcing ribs can be inserted into the limiting groove from bottom to top.

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