Cast-weld connection structure for busbar and terminal of storage battery

Abstract

The utility model discloses a cast-weld connection structure for a busbar and a terminal of a storage battery, and relates to the technical field of storage batteries. The terminal comprises a busbar and a terminal, the upper end of the terminal is provided with a threaded hole, the lower end of the terminal is fixedly connected with an anti-torsion bottom plate, and the lower end of the terminal and the anti-torsion bottom plate are wrapped in the busbar. According to the utility model, the lower end of the terminal and the torsion-resistant bottom plate are directly fused in the busbar during cast welding, and the direct connection of the wiring terminal and the busbar is realized after cooling, so that secondary welding is avoided, the energy consumption is effectively reduced, the generation of lead smoke and lead dust is reduced, the improvement of environmental protection is facilitated, and the overall production efficiency is improved. Meanwhile, the terminal is made of stainless steel or aluminum alloy, so that the terminal does not change color at high temperature and is easy to polish and recover color, and the overall product quality is ensured.

Description

Technical Field

[0001] The utility model belongs to the technical field of storage batteries, and particularly relates to a casting and welding connection structure for a storage battery bus bar and a terminal. Background Technique

[0002] In the current production of lead-acid storage batteries, the welding of the electrode group mainly involves welding the plate lug, terminal, and bus bar together by burning. Currently, the terminals and plate lugs are separate components, while the bus bar is formed by melting and solidifying lead bars.

[0003] In the current storage battery industry, especially for the wiring terminals of small and medium-sized sealed batteries, usually after the bus bar is welded or cast-welded, the terminals and the reserved lead stubs on the bus bar are welded again by using processes such as soldering irons, oxyacetylene, or argon arc welding. This secondary welding not only has low efficiency and high cost but also generates lead smoke and lead dust, polluting the environment. Content of the Utility Model

[0004] The purpose of the utility model is to provide a casting and welding connection structure for a storage battery bus bar and a terminal. By connecting a torsion-resistant bottom plate to the lower end of the terminal and directly covering both the lower end of the terminal and the torsion-resistant bottom plate inside the bus bar during casting and welding, the connection and fixation between the terminal and the bus bar are realized, solving the problems of low production efficiency, high cost, and environmental pollution caused by the need for secondary welding of the existing terminals.

[0005] To solve the above technical problems, the utility model is realized through the following technical solutions:

[0006] The utility model is a casting and welding connection structure for a storage battery bus bar and a terminal, including a bus bar and a terminal. A threaded hole is opened at the upper end of the terminal, a torsion-resistant bottom plate is fixedly connected to the lower end of the terminal, and both the lower end of the terminal and the torsion-resistant bottom plate are covered inside the bus bar.

[0007] As a preferred technical solution of the utility model, the length of the torsion-resistant bottom plate is greater than the diameter of the terminal.

[0008] As a preferred technical solution of the utility model, the torsion-resistant bottom plate and the terminal are of an integral structure or are fixed by welding.

[0009] As a preferred technical solution of the utility model, a plurality of notches are opened at one end of the torsion-resistant bottom plate away from the terminal, so that the end of the torsion-resistant bottom plate forms a serrated structure.

[0010] As a preferred technical solution of the utility model, a plurality of through holes are opened in the torsion-resistant bottom plate.

[0011] As a preferred technical solution of the present utility model, a plurality of convex ribs are provided on the torsion-resistant bottom plate. The convex ribs are concave from one side of the torsion-resistant bottom plate and protrude towards the other side, so that the cross-section of the torsion-resistant bottom plate forms a wavy structure.

[0012] The present utility model has the following beneficial effects:

[0013] In the present utility model, a torsion-resistant bottom plate is connected to the lower end of the terminal, and during casting and welding, the lower end of the terminal and the torsion-resistant bottom plate are directly melted into the bus bar. After cooling, a direct connection between the wiring terminal and the bus bar is achieved, thereby avoiding secondary welding, effectively reducing energy consumption, reducing the generation of lead fumes and lead dust, being beneficial to the improvement of environmental protection, and improving the overall production efficiency.

[0014] At the same time, the terminal is made of stainless steel or aluminum alloy, so that the terminal will not change color at high temperatures, is easy to polish and restore its color, and ensures the overall product quality.

[0015] Of course, it is not necessary for any product implementing the present utility model to achieve all the above-mentioned advantages simultaneously. Description of the Drawings

[0016] In order to more clearly illustrate the technical solutions of the embodiments of the present utility model, the drawings required for describing the embodiments will be briefly introduced below. Obviously, the drawings in the following description are only some embodiments of the present utility model. For those of ordinary skill in the art, without creative efforts, other drawings can also be obtained based on these drawings.

[0017] Figure 1 It is a schematic structural diagram of a casting and welding connection structure of a battery bus bar and a terminal of the present utility model;

[0018] Figure 2 It is a schematic structural diagram of the terminal and the torsion-resistant bottom plate in Embodiment 1;

[0019] Figure 3 It is a schematic structural diagram of the terminal and the torsion-resistant bottom plate in Embodiment 2;

[0020] Figure 4 For Figure 3 front view;

[0021] Figure 5 For Figure 4 side view;

[0022] In the drawings, the list of components represented by each reference numeral is as follows:

[0023] 1 - bus bar, 2 - terminal, 3 - torsion-resistant bottom plate, 201 - threaded hole, 301 - notch, 302 - through hole, 303 - convex rib. Detailed Embodiments

[0024] The technical solutions in the embodiments of the present utility model will be clearly and completely described below in conjunction with the accompanying drawings in the embodiments of the present utility model. Obviously, the described embodiments are only a part of the embodiments of the present utility model, rather than all the embodiments. All other embodiments obtained by those of ordinary skill in the art based on the embodiments of the present utility model without creative efforts shall fall within the protection scope of the present utility model.

[0025] In the description of the present utility model, it should be understood that the terms "opening", "upper", "lower", "thickness", "top", "middle", "length", "inner", "periphery", etc. indicating the orientation or positional relationship are only for the convenience of describing the present utility model and simplifying the description, rather than indicating or implying that the components or elements referred to must have a specific orientation, be constructed and operated in a specific orientation, and thus should not be construed as a limitation to the present utility model.

[0026] Embodiment 1

[0027] Please refer to Figure 1 and 2 As shown, the present utility model is a casting and welding connection structure for a battery bus bar and a terminal, including a bus bar 1 and a terminal 2. A threaded hole 201 is opened at the upper end of the terminal 2, and an anti-torsion bottom plate 3 is fixedly connected to the lower end of the terminal 2. The anti-torsion bottom plate 3 and the terminal 2 are of an integral structure, such as being integrally formed by die casting, or fixed by welding, or connected as a whole by riveting.

[0028] Moreover, the lower end of the terminal 2 and the anti-torsion bottom plate 3 are both covered inside the bus bar 1. Specifically, when casting and welding, the lower end of the terminal 2 and the anti-torsion bottom plate 3 are directly melted into the bus bar 1, and after cooling, a direct connection between the terminal 2 and the bus bar 1 is achieved, thereby avoiding secondary welding, effectively reducing energy consumption, reducing the generation of lead fume and lead dust, being beneficial to the improvement of environmental protection, and improving the overall production efficiency.

[0029] At the same time, the terminal 2 and the anti-torsion bottom plate 3 are made of stainless steel or aluminum alloy materials. For example, the terminal 2 is a stainless steel terminal or an aluminum alloy terminal, and the anti-torsion bottom plate 3 is a stainless steel plate or an aluminum alloy plate, so that the terminal 2 will not change color at high temperatures and is easy to be polished to restore its color, ensuring the overall product quality. Among them, the length of the anti-torsion bottom plate 3 is greater than the diameter of the terminal 2, ensuring that the anti-torsion bottom plate 3 has a sufficient contact area with the bus bar 1.

[0030] Moreover, a plurality of notches 301 are opened at one end of the anti-torsion bottom plate 3 away from the terminal 2. The notches 301 are arc-shaped notches or rectangular notches, so that the end of the anti-torsion bottom plate 3 forms a serrated structure, thereby increasing the contact surface between the anti-torsion bottom plate 3 and the bus bar 1 and improving the anti-torsion performance.

[0031] The torsion-resistant base plate 3 is provided with a plurality of through holes 302 which are circular holes. The provision of the through holes 302 can reduce the overall weight of the torsion-resistant base plate 3 and the terminal 2, and also increase the contact area with the bus bar 1.

[0032] Embodiment 2

[0033] As Figures 3 to 5 shown, the torsion-resistant base plate 3 is provided with a plurality of ribs 303 which are concave on one side of the torsion-resistant base plate 3 and protrude towards the other side, so that the cross-section of the torsion-resistant base plate 3 forms a wavy structure.

[0034] The ribs 303 on the torsion-resistant base plate 3 can be obtained by stamping the torsion-resistant base plate 3. The length direction of the ribs 303 is arranged parallel to the length direction of the torsion-resistant base plate 3. The cross-section of the torsion-resistant base plate 3 forms a wavy structure, which can not only improve the overall structural strength of the torsion-resistant base plate 3, but also increase the contact area between the torsion-resistant base plate 3 and the bus bar 1, thereby further improving the overall torsional resistance performance of the torsion-resistant base plate 3 and ensuring the stability and reliability of the connection between the bus bar 1 and the terminal 2.

[0035] In the description of this specification, the descriptions referring to terms such as "one embodiment", "example", "specific example", etc. mean that the specific features, structures, materials or characteristics described in connection with the embodiment or example are included in at least one embodiment or example of the present invention. In this specification, the schematic representations of the above terms do not necessarily refer to the same embodiment or example. Moreover, the specific features, structures, materials or characteristics described can be combined in a suitable manner in any one or more embodiments or examples.

[0036] The preferred embodiments of the present invention disclosed above are only used to help explain the present invention. The preferred embodiments do not elaborate on all details, nor do they limit the present invention to the specific embodiments described. Obviously, many modifications and variations can be made according to the content of this specification. The present specification selects and specifically describes these embodiments in order to better explain the principle and practical application of the present invention, so that those skilled in the art can well understand and utilize the present invention. The present invention is only limited by the claims and their full scope and equivalents.

Claims

1. A cast welding connection structure of a battery busbar and a terminal, comprising a busbar (1) and a terminal (2), characterized in that: The upper end of the terminal (2) is provided with a threaded hole (201), the lower end of the terminal (2) is fixedly connected to an anti-torsion base plate (3), and the lower end of the terminal (2) and the anti-torsion base plate (3) are both covered inside the busbar (1).

2. A cast welding connection structure of a battery busbar and a terminal according to claim 1, characterized in that: The length of the anti-torsion base plate (3) is greater than the diameter of the terminal (2).

3. A cast welding connection structure of a battery busbar and a terminal according to claim 2, characterized in that: The anti-torsion base plate (3) and the terminal (2) are an integrated structure, or are fixed by welding.

4. A cast-welding connection structure of a battery busbar and a terminal according to claim 1, 2 or 3, characterized in that: A plurality of notches (301) are provided at one end of the anti-twist bottom plate (3) away from the terminal (2), so that the end of the anti-twist bottom plate (3) has a sawtooth structure.

5. A cast-welding connection structure of a battery busbar and a terminal according to claim 1, 2 or 3, characterized in that: The anti-torsion base plate (3) is provided with a plurality of through holes (302).

6. A cast-welding connection structure of a battery busbar and a terminal according to claim 1, 2 or 3, characterized in that: The anti-torsion bottom plate (3) is provided with a plurality of convex ribs (303), wherein the convex ribs (303) are formed by being concave on one side of the anti-torsion bottom plate (3) and convex toward the other side, so that the cross section of the anti-torsion bottom plate (3) forms a wavy structure.

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