A welding quality inspection tool for through-wall welding of storage batteries

Abstract

This utility model is entitled "A Welding Quality Inspection Fixture for Through-Wall Welds in Storage Batteries." It belongs to the field of storage battery manufacturing technology. It mainly solves the problems of uneven force applied when clamping busbars, affecting the accuracy of test results and production efficiency, which are inherent in current manual inspection methods. Its main features are: it consists of a torque wrench adapter and an auxiliary wrench; wherein the upper part of the torque wrench adapter has an angled through hole that mates with the angled head of the torque wrench, and the lower part has a first U-shaped groove that mates with the busbar; the auxiliary wrench has a second U-shaped groove that mates with the busbar. This utility model features a simple structure, time-saving and labor-saving operation, accurate test results, and high production efficiency, and is mainly used for inspecting the welding quality of through-wall welds in storage batteries.

Description

Technical Field

[0001] This utility model belongs to the field of storage battery manufacturing technology, specifically relating to a tooling for inspecting the welding quality of through-wall welding of storage batteries. Background Technology

[0002] With social progress and industrial development, lead-acid batteries are being used in a wider range of fields, and the level of automation in lead-acid battery production is constantly improving. The connection of various electrode groups in the battery has been replaced by advanced through-wall welding instead of cross-bridge welding.

[0003] Through-wall welding, also known as butt welding, is a process in which two electrodes of a butt welding machine are placed on two polarity posts in two tanks. Pressure is applied and current is passed through them. The heat generated by the resistance of the polarity posts and their contact resistance under the action of the current causes the polarity posts to partially melt. The molten parts of the two polarity posts are then fused together through a circular hole in the tank wall.

[0004] Since the various electrode groups of a battery are connected via through-wall welds, the quality of these welds directly affects the overall quality of the battery. If a through-wall weld breaks or fails during use, the car will be unable to start. Therefore, through-wall weld quality inspection is a crucial step in battery production. One of the most common and effective methods for inspecting through-wall weld quality is the torque test of the weld joint. Traditionally, this involves a person manually holding one side of the busbar with pliers in one hand and using a torque tester in the other. However, this method has drawbacks: the force applied manually with pliers is uneven, and repeated application can cause fatigue, affecting not only the accuracy of the through-wall weld torque test results but also battery production efficiency. Utility Model Content

[0005] The purpose of this invention is to provide a welding quality inspection fixture for through-wall welding of batteries, which can conveniently and quickly inspect the torque and welding quality of through-wall welding of batteries. This helps to improve the control of important links in the battery manufacturing process, thereby improving product quality.

[0006] The technical solution of this utility model is: a welding quality inspection fixture for through-wall welding of a storage battery, characterized in that: it is composed of a torque wrench adapter and an auxiliary wrench; wherein, the upper part of the torque wrench adapter is provided with an angled through hole that mates with the angled head of the torque wrench, and the lower part is provided with a first U-shaped groove that mates with the busbar; the auxiliary wrench is provided with a second U-shaped groove that mates with the busbar.

[0007] The torque wrench adapter in the technical solution of this utility model consists of an upper square structure and a lower T-shaped structure; the angular through hole is horizontally arranged in the middle of the square structure; the first U-shaped groove is arranged at the bottom of the T-shaped structure, and the groove opening is horizontal.

[0008] The auxiliary wrench in the technical solution of this utility model includes a wrench body and a handle; the handle is disposed at one end of the wrench body, and the second U-shaped groove is disposed at the other end of the wrench body.

[0009] In the technical solution of this utility model, the opening of the second U-shaped groove is horizontal.

[0010] In the technical solution of this utility model, the lengths of the first U-shaped groove and the second U-shaped groove are 60-80mm.

[0011] In the technical solution of this utility model, the height of the first U-shaped groove and the second U-shaped groove is 8-10mm.

[0012] In the technical solution of this utility model, the length difference between the auxiliary wrench and the torque wrench does not exceed 3cm.

[0013] In the technical solution of this utility model, the auxiliary wrench and the torque wrench have the same length.

[0014] This utility model employs a battery through-wall welding quality inspection fixture consisting of a torque wrench adapter and an auxiliary wrench. The torque wrench adapter has an upper part with an angled through hole that mates with the angled end of the torque wrench, and a lower part with a first U-shaped groove that mates with the busbar. The auxiliary wrench has a second U-shaped groove that mates with the busbar. Therefore, when testing the torque of the battery through-wall welding, the angled end of the torque wrench is first inserted into the angled through hole. Then, the first U-shaped groove is used to clamp one side of the busbar, and the second U-shaped groove is used to clamp the other side of the busbar. Finally, by applying force in a crisscross pattern with the torque wrench and the auxiliary wrench, the through-wall weld joint is broken off, allowing the measurement of the through-wall welding torque and analysis of the welding quality from the cross-section.

[0015] This utility model features a simple structure, time-saving and labor-saving operation, accurate test results and high production efficiency. It is mainly used to test the welding quality of through-wall welding of storage batteries. Attached Figure Description

[0016] Figure 1 This is a schematic diagram of the structure of the torque wrench adapter of this utility model.

[0017] Figure 2 This is a schematic diagram of the structure of the auxiliary wrench of this utility model.

[0018] Figure 3 This is a schematic diagram showing the interaction between the various components of this utility model and the bias column busbar.

[0019] Appendix: 1-Torque wrench adapter; 1-1-Angle through hole; 1-2-First U-groove; 1-3-Torque wrench; 2-Auxiliary wrench; 2-1-Handle; 2-2-Second U-groove; 3-1-First butt welding offset post; 3-2-First busbar; 3-3-Second butt welding offset post; 3-4-Second busbar; 3-5-Through-wall butt welding point. Detailed Implementation

[0020] It should be understood that the structures, proportions, sizes, etc., depicted in the accompanying drawings of this specification are merely for illustrative purposes to aid those skilled in the art and are not intended to limit the scope of implementation of this utility model. Therefore, they have no substantial technical significance. Any modifications to the structure, changes in proportions, or adjustments to size, without affecting the effectiveness and purpose of this utility model, should still fall within the scope of the technical content disclosed in this utility model. Furthermore, the terms such as "upper," "lower," "left," "right," "middle," and "one" used in this specification are merely for clarity of description and are not intended to limit the scope of implementation of this utility model. Changes or adjustments to their relative relationships, without substantially altering the technical content, should also be considered within the scope of implementation of this utility model.

[0021] like Figures 1 to 3 As shown, one embodiment of the battery through-wall welding quality inspection fixture of this utility model consists of a torque wrench adapter 1 and an auxiliary wrench 2.

[0022] The torque wrench adapter 1 consists of an upper square structure and a lower T-shaped structure. The square structure has a horizontal angled through-hole 1-1 in the center, which mates with the angled head of the torque wrench 1-3, allowing the angled head of the torque wrench 1-3 to be inserted into the angled through-hole 1-1 during use. The bottom of the T-shaped structure has a first U-shaped groove 1-2 that mates with the first busbar 3-2. The opening of the first U-shaped groove 1-2 is horizontal, and its length is 60-80mm, and its height is 8-10mm, roughly equivalent to the thickness of the first busbar 3-2, allowing for easy direct insertion of the first busbar 3-2.

[0023] The auxiliary wrench 2 is a self-made auxiliary wrench. It consists of a wrench body, a handle 2-1, and a second U-shaped groove 2-2. The handle 2-1 is located at one end of the wrench body, and the second U-shaped groove 2-2 is located at the other end, with its opening facing horizontally. The second U-shaped groove 2-2 is 60-80mm long and 8-10mm high, roughly the same thickness as the second busbar 3-4, allowing for easy insertion of the second busbar 3-4. The auxiliary wrench 2 is the same length as the torque wrench 1-3, with the length difference generally not exceeding 3cm, facilitating the application of force when breaking the through-wall weld joint 3-5.

[0024] When performing torque testing on through-wall welding of a battery, the testing fixture consists of an angled through-hole 1-1 and a torque wrench 1-3. The torque wrench 1-3 is a commonly used torque wrench. The first U-shaped groove 1-2 clamps the first busbar 3-2 below the first welding offset post 3-1, and the second U-shaped groove 2-2 clamps the second busbar 3-4 below the second welding offset post 3-3. By applying force in a crisscross pattern with the torque wrench 1-3 and the auxiliary wrench 2, the through-wall welding point 3-5 is broken off. The torque of the through-wall welding can be measured, and the quality of the welding can be analyzed from the cross-section.

Claims

1. A battery through-wall welding quality detection tool, characterized by comprising The torque wrench adapter (1) and the auxiliary wrench (2) are provided. The upper part of the torque wrench adapter (1) is provided with an angled through hole (1-1) that mates with the angled head of the torque wrench (1-3), and the lower part is provided with a first U-shaped groove (1-2) that mates with the busbar. The auxiliary wrench (2) is provided with a second U-shaped groove (2-2) that mates with the busbar.

2. The battery through-wall welding quality detection tool according to claim 1, characterized in that: The torque wrench adapter (1) is composed of an upper square structure and a lower T-shaped structure; the angular through hole (1-1) is horizontally arranged in the middle of the square structure; the first U-shaped groove (1-2) is arranged at the bottom of the T-shaped structure, and the groove opening is horizontal.

3. The battery through-wall welding quality detection tool according to claim 1 or 2, characterized in that: The auxiliary wrench (2) includes a wrench body and a handle (2-1); the handle (2-1) is located at one end of the wrench body, and the second U-shaped groove (2-2) is located at the other end of the wrench body.

4. The battery through-wall welding quality detection tooling of claim 3, characterized in that: The opening of the second U-shaped groove (2-2) is horizontal.

5. The battery through-wall welding quality detection tool according to any one of claims 1-2, 4, characterized in that: The lengths of the first U-shaped groove (1-2) and the second U-shaped groove (2-2) are 60-80mm.

6. The battery through-wall welding quality detection tooling of claim 5, wherein: The height of the first U-shaped groove (1-2) and the second U-shaped groove (2-2) is 8-10mm.

7. A welding quality inspection fixture for through-wall welding of a storage battery according to any one of claims 1-2, 4, and 6, characterized in that: The length difference between the auxiliary wrench (2) and the torque wrench (1-3) shall not exceed 3cm.

8. The battery through-wall welding quality detection tooling of claim 7, characterized in that: The auxiliary wrench (2) is the same length as the torque wrench (1-3).

Images