Lead-acid battery through-wall welding structure

Abstract

The utility model discloses a lead-acid battery through-wall welding structure, which is used for welding and sealing a lead-acid battery partition wall opening, and is characterized in that the lead-acid battery through-wall welding structure comprises a left machine head welding arm and a right machine head welding arm which are oppositely arranged, and a left welding spot and a right welding spot are respectively formed at the opposite bottoms of the left machine head welding arm and the right machine head welding arm; the right side face of the left welding spot protrudes to form a circular truncated cone, the diameter of the circular truncated cone is gradually reduced from left to right, the left side face of the right welding spot is flush, and a left lead block and a right lead block are arranged on the two sides of the lead-acid battery partition wall opening respectively. According to the utility model, the asymmetric contact surfaces are utilized, so that metal steam formed in the welding process is eliminated.

Description

Technical Field

[0001] This application relates to the production of lead-acid batteries, and more particularly to a through-wall welding structure for lead-acid batteries. Background Technology

[0002] like Figure 1-2 As shown, traditional weld joints have truncated cones at both ends, causing the two lead blocks to press and contact each other symmetrically during welding. During the welding process, the metal vapor generated by the high temperature cannot be discharged, resulting in pores of different shapes on the weld surface, such as radial elongated holes, round holes, and irregular holes. Utility Model Content

[0003] The purpose of this invention is to provide a through-wall welding structure for lead-acid batteries, in which one side of the lead block is pressed against the other side, with one side of the lead block having less deformation. During high-temperature welding, the metal vapor generated during the welding process can be discharged, and the metal vapor is discharged towards the side with less deformation. Because the lead block with less deformation will have a certain gap with the battery partition wall, this solves the problem in the prior art where symmetrical extrusion welding causes metal vapor to be unable to be discharged. Symmetrical extrusion causes the lead blocks on both sides to be tightly attached to the through hole, and gas cannot be discharged during welding after contact. This technical solution eliminates the pores on the welding surface, improving the quality and service life of the battery.

[0004] To achieve the above objectives, the present invention provides the following technical solution.

[0005] This application discloses a through-wall welding structure for lead-acid batteries, used for welding and sealing openings in the lead-acid battery partition wall. It includes a left welding arm and a right welding arm arranged opposite each other. Left and right welding points are respectively formed on the bottom of the opposite sides of the left and right welding arms. A frustum protrudes from the right side of the left welding point, the diameter of which gradually decreases from left to right. The left side of the right welding point is flat. Left and right lead blocks are respectively provided on both sides of the lead-acid battery partition wall opening.

[0006] During welding, the left welding arm of the machine head drives the circular platform to compress the left lead block until it contacts the right lead block to achieve a welding seal.

[0007] Preferably, in the above-mentioned lead-acid battery through-wall welding structure, the diameters of the left lead block and the right lead block are larger than the diameter of the opening in the lead-acid battery partition wall.

[0008] Preferably, in the above-described through-wall welding structure for lead-acid batteries, the diameter of the right side of the frustum is smaller than the diameter of the opening in the lead-acid battery partition wall.

[0009] Preferably, in the above-described lead-acid battery through-wall welding structure, the diameter of the right side of the frustum is smaller than the diameter of the left side of the right weld point.

[0010] Preferably, in the above-mentioned through-wall welding structure for lead-acid batteries, the bottom of the left lead block and the right lead block are respectively formed with a left support plate and a right support plate.

[0011] Compared with existing technologies, the advantage of this technical solution is that it eliminates the metal vapor formed during the welding process by utilizing asymmetrical contact surfaces. Attached Figure Description

[0012] To more clearly illustrate the technical solutions in the embodiments of this application or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments recorded in this application. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0013] Figure 1 The diagram shown is a schematic of the back-to-back extrusion contact welding of lead-acid batteries in the background art;

[0014] Figure 2 As shown Figure 1 Enlarged view of the welding position in the middle;

[0015] Figure 3 The diagram shown is of a lead-acid battery.

[0016] Figure 4 The diagram shown is a schematic of the through-wall welding structure of a lead-acid battery in a specific embodiment of this technical solution. Detailed Implementation

[0017] The technical solutions of the present utility model will be described in detail below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those skilled in the art without creative effort are within the protection scope of the present utility model.

[0018] Combination Figure 3-4 As shown, the lead-acid battery through-wall welding structure 100 is used to weld and seal the lead-acid battery partition wall opening 101. It includes a left welding arm 102 and a right welding arm 103 arranged opposite to each other. The bottom of the left welding arm 102 and the right welding arm 103 are respectively formed with a left welding point 104 and a right welding point 105. The right side of the left welding point 104 protrudes to form a frustum 106. The diameter of the frustum 106 gradually decreases from left to right. The left side of the right welding point 105 is flat. A left lead block 107 and a right lead block 108 are respectively arranged on both sides of the lead-acid battery partition wall opening 101. The diameter of the left lead block 107 and the right lead block 108 is larger than the diameter of the lead-acid battery partition wall opening 101.

[0019] During welding, the left welding arm 102 drives the truncated cone 106 to compress the left lead block 107 until it contacts the right lead block 108 to achieve a welding seal.

[0020] In this embodiment, the left lead block is pressed against the right lead block, with the right lead block deforming less. The left lead block is deformed by the truncated cone. Because the right side of the truncated cone is smaller, i.e., the pressure is greater, the left lead block will bulge to the right and contact the right lead block. During high-temperature welding, the metal vapor generated during high-temperature welding can be discharged from the right side. The metal vapor is discharged towards the side with less deformation. Because the right lead block with less deformation will have a certain gap with the battery partition wall, this solves the problem of metal vapor not being able to be discharged due to symmetrical extrusion welding in the background technology. Symmetrical extrusion causes the lead blocks on both sides to be tightly attached to the through hole, and gas cannot be discharged during welding after contact. This technical solution eliminates the problem of air holes on the welding surface, improving the quality and service life of the battery. To ensure a sealed weld, the corresponding size needs to be appropriate, i.e., the diameter of the right side of the truncated cone 106 is smaller than the diameter of the opening 101 in the lead-acid battery partition wall. The diameter of the right side of the truncated cone 106 is smaller than the diameter of the left side of the right weld point 105. The bottom of the left lead block 107 and the right lead block 108 are respectively formed with a left support plate 109 and a right support plate 110.

[0021] It should be noted that, in this document, relational terms such as "first" and "second" are used only to distinguish one entity or operation from another, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Furthermore, the terms "comprising," "including," or any other variations thereof are intended to cover non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements includes not only those elements but also other elements not expressly listed, or elements inherent to such a process, method, article, or apparatus. Without further limitations, an element defined by the phrase "comprising one..." does not exclude the presence of other identical elements in the process, method, article, or apparatus that includes said element.

[0022] The above description is only a specific embodiment of this application. It should be noted that for those skilled in the art, several improvements and modifications can be made without departing from the principle of this application, and these improvements and modifications should also be considered within the scope of protection of this application.

Claims

1. A through-wall welding structure for lead-acid batteries, used for welding and sealing openings in the partition wall of lead-acid batteries, characterized in that, The device includes a left and right welding arm positioned opposite each other. A left welding point and a right welding point are respectively formed at the bottom of the opposite sides of the left and right welding arms. A frustum protrudes from the right side of the left welding point, with the diameter of the frustum gradually decreasing from left to right. The left side of the right welding point is flat. A left lead block and a right lead block are respectively provided on both sides of the opening in the lead-acid battery partition wall. During welding, the left welding arm of the machine head drives the circular platform to compress the left lead block until it contacts the right lead block to achieve welding sealing.

2. The lead-acid battery through-wall welding structure according to claim 1, characterized in that, The diameters of the left and right lead blocks are larger than the diameter of the opening in the lead-acid battery partition wall.

3. The lead-acid battery through-wall welding structure according to claim 1, characterized in that, The diameter of the right side of the frustum is smaller than the diameter of the opening in the lead-acid battery partition wall.

4. The lead-acid battery through-wall welding structure according to claim 1, characterized in that, The diameter of the right side of the frustum is smaller than the diameter of the left side of the right weld point.

5. The lead-acid battery through-wall welding structure according to claim 1, characterized in that, The bottom of the left lead block and the right lead block are respectively formed with a left support plate and a right support plate.

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