Battery performance testing device and clamp tool for testing

Abstract

The utility model relates to a battery performance testing device and a clamp tool for testing. The clamp tool comprises an alligator clip and a lead, the alligator clip comprises an upper clip and a lower clip, and the upper clip and the lower clip are connected with each other through a hinge shaft; the middle portions of the opposite faces of the head portions of the upper clamp and the lower clamp are arranged to be clamping planes, the tail portion of the lower clamp extends outwards to form a hollow connecting column, a through hole is formed in the connecting column, and a telescopic positioning column is installed at the position of the through hole. One end of the wire is welded with a connecting cylinder with one open end, the inner diameter of the connecting cylinder is in small clearance fit with the outer diameter of the connecting column, and the outer wall of the connecting cylinder is provided with a positioning hole matched with the positioning column. According to the utility model, more time and labor can be saved in the frequent dismounting and mounting process, the problem of terminal burnout caused by overlarge local current can be prevented in the large-current discharge test process, and the test process is safer and more effective.

Description

Technical Field

[0001] This utility model belongs to the technical field of lead-acid battery testing equipment, specifically relating to a battery performance testing device and a testing fixture. Background Technology

[0002] To facilitate the optimization of battery performance, it is necessary to study the electrolyte formulation of the battery in the laboratory. During the research, some simple single cells are usually assembled in the laboratory for performance testing. The single cell is covered, and its terminals are lead plates. The lower end of the lead plate is connected to the tab of the electrode plate, and the upper end extends out of the battery case. After connecting the wire to the terminal of the single cell, power is applied for testing. Currently, the fixture for testing single lead-acid batteries is: the tail of the alligator clip is directly connected to the wire, and the head of the alligator clip is clamped on the terminal of the single cell for testing.

[0003] Because individual battery cells lack a top cover and have poor sealing, acid easily seeps into the terminals during testing, making the alligator clips highly susceptible to corrosion. Therefore, during testing, especially prolonged testing, frequent replacement of the alligator clips is necessary to ensure connection effectiveness and test accuracy. Currently, the alligator clip tail (such as...) Figure 5 The process involves inserting the wire into the tail and then tightening it with needle-nose pliers. Therefore, when replacing an alligator clip, you need to first use needle-nose pliers to remove the old alligator clip from the wire, and then use needle-nose pliers to connect the new alligator clip to the wire. The disassembly and connection process is quite complicated, time-consuming and labor-intensive.

[0004] In addition, the heads of alligator clips are currently serrated, resulting in a small contact area with the terminals. During high-current discharge, this increases the internal resistance of the battery terminal connection, causing the terminal temperature to rise rapidly, leading to the battery terminals melting and affecting the test results. Summary of the Invention

[0005] The purpose of this utility model is to overcome the shortcomings of the prior art and provide a battery performance testing device and a testing fixture, which can save more time and effort in the process of frequent disassembly and installation, and can prevent the terminal burnout caused by excessive local current during high current discharge testing, making the testing process safer and more effective.

[0006] A fixture for battery performance testing, characterized in that it includes alligator clips and wires;

[0007] The alligator clip includes an upper clip and a lower clip, which are connected to each other via a hinge shaft.

[0008] The upper and lower clamps are configured with a clamping plane at the center of their opposing heads. The lower clamp has a hollow connecting post extending outward from its tail. The connecting post has a through hole and a retractable positioning post is installed at the through hole.

[0009] One end of the wire is welded with a connecting cylinder that is open at one end. The inner diameter of the connecting cylinder is fitted with the outer diameter of the connecting post with a small clearance. The outer wall of the connecting cylinder has a positioning hole that fits with the positioning post.

[0010] A spring plate is connected to the lower end of the positioning post, and the edge of the spring plate is fixed to the inner wall of the connecting post.

[0011] After the connecting sleeve is fitted onto the connecting post, the positioning post protrudes from the positioning hole.

[0012] The positioning hole and the positioning post are fitted with a small clearance.

[0013] A battery performance testing device includes a single battery cell and the fixture described above.

[0014] The single battery includes a battery case, a battery cell placed in the battery case, and an electrolyte. The battery cell is composed of 2 to 3 positive / negative plates stacked alternately. Lead plates, which serve as terminals, are welded onto the tabs of the positive / negative plates, and the upper ends of the lead plates extend out of the battery case.

[0015] Multiple fixtures are clamped onto each lead sheet in a corresponding manner.

[0016] Compared with the prior art, this invention saves more time and effort in the process of frequent disassembly and installation, and can prevent the terminal from burning out due to excessive local current during high current discharge testing, making the testing process safer and more effective. Attached Figure Description

[0017] Figure 1 This is a schematic diagram of the wire interface of this utility model;

[0018] Figure 2 This is a schematic diagram of the alligator clip structure of this utility model;

[0019] Figure 3 Side view of the alligator clip's tail;

[0020] Figure 4 A schematic diagram of the internal structure of the alligator clip's tail;

[0021] Figure 5 Here is a structural diagram of an existing alligator clip;

[0022] In the diagram: 1. Connecting cylinder; 11. Positioning hole; 2. New type of alligator clip; 21. Connecting post; 22. Positioning post; 23. Spring plate; 3. Wire. Detailed Implementation

[0023] As attached Figure 1-4As shown, this utility model includes a connecting cylinder 1 and an alligator clip 2 connected to a wire 3. One end of the connecting cylinder 1 is welded to the wire 3, and the other end is open. A circular positioning hole 11 is formed on the outer wall near the opening. The alligator clip 2 includes an upper clip and a lower clip, which are connected to each other via a hinge shaft. A torsion spring is mounted on the hinge shaft. A hollow connecting post 21 extends outward from the tail of the clip. A through hole is formed on the connecting post 21, and a retractable positioning post 22 is installed in the through hole. A spring plate 23 is connected to the lower end of the positioning post 22. The edge of the spring plate 23 is fixed to the inner wall of the connecting post 21. The spring plate 23 controls the retraction and extension of the positioning post 22 within the through hole. The outer diameter of the connecting post 21 matches the inner diameter of the connecting cylinder 1, and the diameter of the positioning post 22 matches the diameter of the positioning hole 11. When the connecting cylinder 1 is fitted onto the connecting post 21, the positioning post 22 protrudes from the positioning hole 11.

[0024] During use, the connecting sleeve 1 remains fixed to the wire 3 without disassembly. If the alligator clip becomes corroded by acid during prolonged testing, simply remove the connecting post 21 of the old alligator clip from the connecting sleeve and then attach the connecting post 21 of the new alligator clip to the connecting sleeve 1. For disassembly, press the positioning post 22 on the old alligator clip down into the connecting post 21, then gently pull it out. For installation, press the positioning post 22 on the new alligator clip down into the connecting post 21, insert the connecting post 21 into the connecting sleeve 1, and finally align the positioning post 22 with the positioning hole 11. The spring force will then eject the positioning post, securing it firmly. Using this method to replace clamps is simple, time-saving, and labor-saving.

[0025] This utility model also provides a battery performance testing device, including a single battery cell and multiple fixtures as described above; the single battery cell includes a battery case, a battery cell placed in the battery case and an electrolyte, the battery cell is composed of 2 to 3 positive / negative plates stacked alternately, and lead plates as terminals are welded to the tabs of the positive / negative plates, with the upper ends of the lead plates extending out of the battery case; multiple fixtures are clamped one-to-one on each lead plate.

Claims

1. A fixture for battery performance testing, characterized in that: Includes alligator clips (2) and wires (3); The alligator clip (2) includes an upper clip and a lower clip, which are connected to each other via a hinge shaft; The upper and lower clamps are configured with a clamping plane (24) at the middle of their opposing heads. The lower clamp has a hollow connecting post (21) extending outward from its tail. The connecting post (21) has a through hole and a retractable positioning post (22) is installed at the through hole. One end of the wire (3) is welded with a connecting cylinder (1) with an open end. The inner diameter of the connecting cylinder (1) is fitted with the outer diameter of the connecting post (21) with a small clearance. The outer wall of the connecting cylinder (1) has a positioning hole (11) that fits with the positioning post (22).

2. The fixture for battery performance testing according to claim 1, characterized in that: The lower end of the positioning post (22) is connected to a spring plate (23), and the edge of the spring plate (23) is fixed to the inner wall of the connecting post (21).

3. The fixture for battery performance testing according to claim 1, characterized in that: After the connecting cylinder (1) is fitted onto the connecting post (21), the positioning post (22) passes through the positioning hole (11).

4. A fixture for battery performance testing according to claim 1 or 3, characterized in that: The positioning hole (11) and the positioning post (22) are fitted with a small clearance.

5. A battery performance testing device, characterized in that: Includes single-cell batteries and multiple battery performance testing fixtures as described in any one of claims 1-4; The single battery includes a battery case, a battery cell placed in the battery case, and an electrolyte. The battery cell is composed of 2 to 3 positive / negative plates stacked alternately. Lead plates, which serve as terminals, are welded onto the tabs of the positive / negative plates, and the upper ends of the lead plates extend out of the battery case. Multiple fixtures are clamped onto each lead sheet in a corresponding manner.

Images