Multi-model cylindrical battery voltage and internal resistance detection tool

Abstract

The utility model belongs to the field of lithium battery production, particularly relates to a voltage and internal resistance detection tool for multi-model cylindrical batteries, and provides the following scheme aiming at the problems of single detection type, limited compatibility and unstable test in the prior art: the voltage and internal resistance detection tool comprises a mounting bottom plate; the fixed base is in bolted connection with the bottom of the mounting bottom plate; the diameter adjusting sliding groove is formed in the middle of the surface of the mounting bottom plate; the height adjusting sliding groove is formed in the surface of the mounting bottom plate; and the diameter positioning plate fastening block is slidably connected in the diameter adjusting chute of the mounting bottom plate, so that to-be-tested batteries of different models can be compatible, parts do not need to be replaced, the purchase cost is saved, and the production efficiency is improved. The contact surface of the to-be-tested battery and the probe assembly can be ensured to be basically in the center position during testing by means of the diameter positioning plate, and the accuracy and the stability of testing are improved.

Description

Technical Field

[0001] This utility model relates to the field of lithium battery production technology, and in particular to a tooling for detecting the internal resistance of voltage of various types of cylindrical batteries. Background Technology

[0002] Currently, commonly used cylindrical battery testing fixtures are generally designed for a single cylindrical battery model. For different battery models, compatibility is often achieved by replacing parts. However, it is also impossible to ensure that the test probe is centered with the contact surface of various batteries. Therefore, an offline testing fixture for the voltage and internal resistance of multiple cylindrical batteries is proposed: by adjusting the left and right distance of the fixture clamping block and the height of the upper probe, the testing of common cylindrical batteries of different models on the market can be achieved. Utility Model Content

[0003] The purpose of this invention is to address the shortcomings of existing technologies, such as limited detection types, restricted compatibility, and unstable testing, by proposing a multi-type cylindrical battery voltage internal resistance testing fixture.

[0004] To achieve the above objectives, the present invention adopts the following technical solution:

[0005] A multi-model cylindrical battery voltage internal resistance detection fixture, including

[0006] Install base plate;

[0007] The fixed base is bolted to the bottom of the mounting plate;

[0008] A diameter adjustment groove is provided in the middle of the surface of the mounting base plate;

[0009] Height adjustment groove, which is formed on the surface of the mounting base plate;

[0010] The diameter positioning plate fastening block is slidably connected in the diameter adjustment groove of the mounting base plate;

[0011] Diameter positioning plate, the diameter positioning plate is bolted to the surface of the diameter positioning plate fastening block;

[0012] The battery to be tested is clamped inside the diameter positioning plate;

[0013] The probe mounting plate is slidably connected to the height adjustment groove of the mounting base plate;

[0014] The probe fixing plate is bolted to the surface of the mounting base plate;

[0015] The probe assembly consists of two sets, which are bolted to holes in the middle of the probe mounting plate and the probe fixing plate, respectively.

[0016] The short-circuit tester has wires connected to the terminals of the probe assembly, enabling compatibility with different models of batteries under test without the need to replace parts, thus saving procurement costs. The diameter positioning plate ensures that the contact surface between the battery under test and the probe assembly is basically centered during testing, improving the accuracy and stability of the test.

[0017] As a preferred embodiment of this utility model, the surface of the mounting base plate is provided with a horizontal waist-shaped groove and a vertical waist-shaped groove. The horizontal waist-shaped groove is a diameter adjustment groove, and the vertical waist-shaped groove is a height adjustment groove. The structure of the waist-shaped groove facilitates the sliding connection between the diameter positioning plate fastening block and the probe mounting plate through the slide rail, making it convenient to adjust and adapt to the test batteries with different diameters and heights.

[0018] As a preferred embodiment of this utility model, the length of the diameter adjustment slide is 16mm-60mm, and the height of the height adjustment slide is 40mm-200mm. The dimensions of the diameter adjustment slide and the height adjustment slide are convenient to adjust and adapt to different models of batteries to be tested.

[0019] As a preferred embodiment of this utility model, two diameter positioning plates and two diameter positioning plate fastening blocks are provided. The height adjustment slide is located at the top of the diameter adjustment slide. The diameter positioning plate and the diameter positioning plate fastening block are convenient for clamping the battery to be tested.

[0020] In a preferred embodiment of this utility model, the screw holes of the diameter positioning plate fastening block and the probe mounting plate are provided with locking screws. The probe fixing plate is located at the bottom of the diameter adjustment slide groove, and the diameter positioning plate fastening block and the probe mounting plate can be fixed by the locking screws.

[0021] In a preferred embodiment of this utility model, the short-circuit tester is connected to two sets of probe assemblies via two sets of wires. The short-circuit tester has four terminals, and the connection between the short-circuit tester and the probe assemblies via wires facilitates the short-circuit tester to perform detection via the wires and probe assemblies. Beneficial effects

[0022] 1. Solve the problem of limited testing variety for cylindrical batteries, the problem of frequent component replacement required for compatibility testing of different cylindrical battery models, and the problem of unstable test data caused by probe eccentricity during testing of different cylindrical battery models.

[0023] 2. It can detect cylindrical batteries with diameters ranging from 18mm to Xmm and heights ranging from 65mm to Ymm in any combination. The center of the arc surface of the battery edge is coaxial with the center of the probe assembly, ensuring that the probe can contact the center area of ​​both ends of the battery regardless of the type of cylindrical battery used, thus ensuring the stability and reliability of the test data.

[0024] In this invention, it is compatible with different models of batteries under test without the need to replace parts, thus saving procurement costs. The diameter positioning plate ensures that the contact surface between the battery under test and the probe assembly is basically centered during testing, improving the accuracy and stability of the test. Attached Figure Description

[0025] Figure 1 This is a perspective view of the entire utility model;

[0026] Figure 2 This is a perspective view of the mounting base plate of this utility model;

[0027] Figure 3 This is a perspective view of the fixed base of this utility model;

[0028] Figure 4 This is a three-dimensional view of the battery to be tested according to this utility model.

[0029] In the diagram: 1. Mounting base plate; 2. Diameter positioning plate fastening block; 3. Probe mounting plate; 4. Fixed base; 5. Battery under test; 6. Diameter positioning plate; 7. Probe assembly; 8. Diameter adjustment slide; 9. Height adjustment slide; 10. Short circuit tester; 11. Probe fixing plate. Detailed Implementation

[0030] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments of the present utility model. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Example

[0031] Reference Figure 1 - Figure 4 A multi-model cylindrical battery voltage internal resistance detection fixture, including

[0032] Install base plate 1;

[0033] Fixed base 4 is bolted to the bottom of mounting base plate 1;

[0034] Diameter adjustment groove 8 is formed in the middle of the surface of mounting base plate 1;

[0035] Height adjustment groove 9 is formed on the surface of mounting base plate 1;

[0036] Diameter positioning plate fastening block 2 is slidably connected to the diameter adjustment groove 8 of the mounting base plate 1;

[0037] Diameter positioning plate 6 is bolted to the surface of diameter positioning plate fastening block 2.

[0038] The battery to be tested, 5, is clamped inside the diameter positioning plate 6;

[0039] The probe mounting plate 3 is slidably connected to the height adjustment groove 9 of the mounting base plate 1.

[0040] The probe fixing plate 11 is bolted to the surface of the mounting base plate 1.

[0041] The probe assembly 7 has two sets, and the two sets of probe assemblies 7 are respectively bolted to the holes in the middle of the probe mounting plate 3 and the probe fixing plate 11.

[0042] The short-circuit tester 10 has wires connected to the terminals of the probe assembly 7.

[0043] With the above structure, it is possible to be compatible with different models of the battery under test 5 without replacing parts, thus saving procurement costs. The diameter positioning plate 6 ensures that the contact surface between the battery under test 5 and the probe assembly 7 is basically in the center during the test, which improves the accuracy and stability of the test.

[0044] Please see Figure 2 The mounting base plate 1 has horizontal and vertical waist-shaped slots on its surface. The horizontal waist-shaped slot is a diameter adjustment groove 8, and the vertical waist-shaped slot is a height adjustment groove 9. The structure of the waist-shaped slots facilitates the sliding connection between the diameter positioning plate fastening block 2 and the probe mounting plate 3 via the slide rail, making it easy to adjust and adapt to the test battery 5 with different diameters and heights.

[0045] Please see Figure 2 The diameter adjustment slide 8 has a length of 16mm-60mm, and the height adjustment slide 9 has a height of 40mm-200mm. The dimensions of the diameter adjustment slide 8 and the height adjustment slide 9 are easy to adjust to accommodate different models of batteries 5 to be tested.

[0046] Please see Figure 2 Two diameter positioning plates 6 and two diameter positioning plate fastening blocks 2 are provided. The height adjustment slide 9 is located at the top of the diameter adjustment slide 8. The diameter positioning plates 6 and two diameter positioning plate fastening blocks 2 are convenient for clamping the battery 5 to be tested.

[0047] Please see Figure 3The screw holes of the diameter positioning plate fastening block 2 and the probe mounting plate 3 are equipped with locking screws. The probe fixing plate 11 is located at the bottom of the diameter adjustment slide 8. The diameter positioning plate fastening block 2 and the probe mounting plate 3 can be fixed by the locking screws.

[0048] Please see Figure 1 The short-circuit tester 10 is connected to two sets of probe assemblies 7 via two sets of wires. The short-circuit tester 10 has four terminals. The short-circuit tester 10 is connected to the probe assembly 7 via wires, which facilitates the short-circuit tester 10 to perform detection via the wires and probe assembly 7.

[0049] The short-circuit tester 10 adopts existing technology and can use the main structure of the patent with application number 200720120451.4.

[0050] The operating steps of this utility model are as follows: The diameter positioning plate fastening block 2 can be fixed in the diameter adjustment slide groove 8 of the mounting base plate 1 by locking screws. When testing batteries 5 of different diameters, the diameter positioning plate fastening block 2 can be moved inside the diameter adjustment slide groove 8 by pushing it. Moving the diameter positioning plate fastening block 2 allows the diameter positioning plate 6 to clamp a battery 5 of a certain model, thereby achieving compatible testing of batteries of different diameters. Similarly, the probe mounting plate 3 can be fixed in the height adjustment slide groove 9 of the mounting base plate 1 by locking screws. By moving the probe mounting plate 3, its height in the height adjustment slide groove 9 can be adjusted, thus adjusting the distance between the two probe assemblies 7. The distance between the two ends of the battery under test (5) is adjusted to allow it to clamp the two ends of the battery under test (5), thus enabling compatibility testing of batteries of different heights. After the fixture is adjusted and placed, one end of the battery under test (5) is first placed in contact with the probe assembly 7. Then, the spring of the probe assembly 7 is pressed down, allowing the battery under test (5) to be inserted at an angle between the two probe assemblies 7 and clamped. Finally, the test begins. The terminals of the probe assembly 7 are connected to the external short-circuit tester 10 through wires to display data. This enables compatibility of the internal resistance of different models of batteries under test (5), saving the procurement cost of changing test tools. At the same time, it ensures that the test point of the battery under test (5) is centered, improving the stability and accuracy of the test data.

[0051] The above description is only a preferred embodiment of the present utility model, but the protection scope of the present utility model is not limited thereto. Any equivalent substitutions or changes made by those skilled in the art within the technical scope disclosed in the present utility model, based on the technical solution and the inventive concept of the present utility model, should be included within the protection scope of the present utility model.

Claims

1. A multi-model cylindrical battery voltage and resistance detection tool, characterized in that, The utility model relates to a short circuit tester, including The installation bottom plate (1) is fixed with the diameter positioning plate fastening block (2) and the diameter positioning plate (6); The fixed base (4) is bolted on the bottom of the installation bottom plate (1); The diameter adjustment sliding groove (8) is opened in the middle of the surface of the installation bottom plate (1); The height adjustment sliding groove (9) is opened in the surface of the installation bottom plate (1); The diameter positioning plate fastening block (2) is slidably connected in the diameter adjustment sliding groove (8) of the installation bottom plate (1); The diameter positioning plate (6) is bolted on the surface of the diameter positioning plate fastening block (2); The battery to be measured (5) is clamped in the inner side of the diameter positioning plate (6); The probe mounting plate (3) is slidably connected in the height adjustment sliding groove (9) of the installation bottom plate (1); The probe fixing plate (11) is bolted on the surface of the installation bottom plate (1); The probe assembly (7) is provided with two groups, and the two groups of probe assemblies (7) are bolted in the middle hole of the probe mounting plate (3) and the probe fixing plate (11) respectively; The short circuit tester (10) is connected with the wiring end of the probe assembly (7) through two groups of wires.

2. The multi-model cylindrical battery voltage and resistance detection tool of claim 1, wherein, The surface of the installation bottom plate (1) is respectively provided with horizontal waist-shaped notches and vertical waist-shaped notches, the horizontal waist-shaped notch is the diameter adjustment sliding groove (8), and the vertical waist-shaped notch is the height adjustment sliding groove (9).

3. The multi-model cylindrical battery voltage and resistance detection tool of claim 1, wherein, The length of the diameter adjustment sliding groove (8) is 16mm-60mm, and the height of the height adjustment sliding groove (9) is 40mm-200mm.

4. The multi-model cylindrical battery voltage and resistance detection tool of claim 1, wherein, The diameter positioning plate (6) and the diameter positioning plate fastening block (2) are both provided with two, and the height adjustment sliding groove (9) is located at the top of the diameter adjustment sliding groove (8).

5. The multi-model cylindrical battery voltage and resistance detection tool of claim 1, wherein, The screw holes of the diameter positioning plate fastening block (2) and the probe mounting plate (3) are all provided with locking screws, and the probe fixing plate (11) is located at the bottom of the diameter adjustment sliding groove (8).

6. The multi-model cylindrical battery voltage and resistance detection tool of claim 1, wherein, The short circuit tester (10) is connected with the two groups of probe assemblies (7) through two groups of wires, and the wiring end of the short circuit tester (10) is provided with four.

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