Cylindrical battery internal resistance testing tool

Abstract

The utility model provides a kind of cylindrical battery internal resistance test tool, including test frame, and the symmetric U-shaped battery limiting seat of test frame is arranged, and U-shaped battery limiting seat between installation has the battery body to be tested, and the both ends of the battery body to be tested are equipped with positive copper shaft and negative copper shaft, and positive copper shaft and negative copper shaft are all equipped with probe inside it.The utility model has the following beneficial effects, the utility model structure is simple, convenient to use, solves the serious size adaptability problem of existing cylindrical battery internal resistance test tool generally, it is convenient to test the internal resistance of cylindrical battery, can be properly adjusted, adapt to cylindrical battery of different length, without frequent replacement special tool, improve test efficiency.

Description

Technical Field

[0001] This utility model is a cylindrical battery internal resistance testing fixture, belonging to the technical field of cylindrical battery internal resistance testing fixtures. Background Technology

[0002] Internal resistance and voltage are important parameters characterizing battery performance. Only by accurately obtaining these parameters can we judge the quality of the battery. It usually includes components such as probe holder, insulating sleeve and overcurrent pressure head. Stable contact with the battery terminals is achieved through spring probe. It is mainly used in the quality inspection of battery production line. It can quickly assess whether the battery internal resistance, voltage and other parameters meet the standards, and improve production efficiency and quality control accuracy.

[0003] Existing cylindrical battery internal resistance testing fixtures generally suffer from serious size compatibility issues, and dedicated fixtures lead to frequent changeovers, low efficiency, and high costs. Utility Model Content

[0004] To address the shortcomings of existing technologies, the purpose of this utility model is to provide a testing fixture for the internal resistance of cylindrical batteries.

[0005] To achieve the above objectives, this utility model is implemented through the following technical solution:

[0006] A cylindrical battery internal resistance testing fixture includes a test frame with U-shaped battery limiting seats symmetrically arranged inside the test frame. The battery body to be tested is installed between the U-shaped battery limiting seats. Positive copper shaft and negative copper shaft are provided at both ends of the battery body to be tested, and probes are installed inside both the positive copper shaft and the negative copper shaft.

[0007] Furthermore, a connecting plate is slidably installed on one side of the positive copper shaft inside the test frame, and guide grooves that are slidably connected to the connecting plate are opened on both sides of the test frame. A positive mounting plate is installed on one side of the connecting plate, and the positive copper shaft is installed on the positive mounting plate.

[0008] Furthermore, a negative electrode mounting plate is installed on one side of the negative electrode copper shaft inside the test frame. A negative limit sleeve is provided between the negative electrode mounting plate and the U-shaped battery limit seat. A spring is connected between the negative electrode mounting plate and the inner wall of the test frame.

[0009] Furthermore, a clamp mounting base is detachably installed on one side of the connecting plate on the test frame via bolts. A push-pull quick clamp is installed on the clamp mounting base, with one end of the push-pull quick clamp abutting against the connecting plate. The test frame has three sets of mounting holes that match the bolts.

[0010] The beneficial effects of this utility model are:

[0011] By symmetrically arranging U-shaped battery limiting seats within the test frame, it is easy to place the battery body to be tested within the test frame. The probes within the positive and negative copper shafts contact the battery body to be tested, thereby enabling the testing of the internal resistance of cylindrical batteries. This utility model has a simple structure and is easy to use. It solves the serious size compatibility problem that is common in existing cylindrical battery internal resistance testing fixtures, making it convenient to test the internal resistance of cylindrical batteries. It can be appropriately adjusted to adapt to cylindrical batteries of different lengths, eliminating the need for frequent changes of special fixtures and improving testing efficiency. Attached Figure Description

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

[0013] Figure 1 This is a schematic diagram of the structure of a cylindrical battery internal resistance testing fixture according to the present invention;

[0014] Figure 2 This is a schematic diagram of the structure of a cylindrical battery internal resistance testing fixture after the battery is fixed in this utility model.

[0015] Figure 3 This is a bottom view of a cylindrical battery internal resistance testing fixture according to the present invention.

[0016] Figure 4 This is a schematic diagram of the adjusted structure of a cylindrical battery internal resistance testing fixture according to the present invention.

[0017] In the diagram, 1. Test frame; 2. U-shaped battery limit seat; 3. Battery body to be tested; 4. Positive copper shaft; 5. Negative copper shaft; 6. Probe; 7. Connecting plate; 8. Guide groove; 9. Positive mounting plate; 10. Negative mounting plate; 11. Negative limit sleeve; 12. Spring; 13. Fixture mounting base; 14. Push-pull quick clamp; 15. Mounting hole. Detailed Implementation

[0018] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. 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 of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0019] Please see Figure 1-4This utility model provides a technical solution for testing the internal resistance of a cylindrical battery, including a test frame 1. U-shaped battery limiting seats 2 are symmetrically arranged within the test frame 1, and a battery body 3 to be tested is installed between the U-shaped battery limiting seats 2. The symmetrical arrangement of the U-shaped battery limiting seats 2 within the test frame 1 facilitates the placement of the battery body 3 within the test frame 1. Positive copper shafts 4 and negative copper shafts 5 are provided at both ends of the battery body 3, and probes 6 are installed within both the positive and negative copper shafts 4 and 5. The probes 6 within the positive and negative copper shafts 4 and 5 contact the battery body 3 to be tested, thereby enabling the testing of the internal resistance of the cylindrical battery.

[0020] See Figure 1-3 A connecting plate 7 is slidably mounted on one side of the positive copper shaft 4 inside the test frame 1. Guide grooves 8 are provided on both sides of the test frame 1 to slidably connect with the connecting plate 7. A positive mounting plate 9 is mounted on one side of the connecting plate 7, with the positive copper shaft 4 mounted on the positive mounting plate 9. A negative mounting plate 10 is mounted on one side of the negative copper shaft 5 inside the test frame 1. A negative limit sleeve 11 is provided between the negative mounting plate 10 and the U-shaped battery limit seat 2. A spring 12 connects the negative mounting plate 10 to the inner wall of the test frame 1. The guide grooves 8 facilitate the stable sliding of the positive mounting plate 9 by the connecting plate 7, and the spring 12 ensures the automatic reset of the negative mounting plate 10 after testing.

[0021] See Figure 1-3 A clamp mounting base 13 is detachably mounted on one side of the connecting plate 7 on the test frame 1 via bolts. A push-pull quick clamp 14 is mounted on the clamp mounting base 13, with one end of the push-pull quick clamp 14 abutting against the connecting plate 7. The test frame 1 has three sets of mounting holes 15 that match the bolts. By pushing the connecting plate 7 with the push-pull quick clamp 14, the connecting plate 7 pushes the positive electrode mounting plate 9 and the battery body 3 under test, causing the probes 6 on the positive electrode copper shaft 4 and the negative electrode copper shaft 5 to abut against the battery body 3 under test. The mounting holes 15, in conjunction with the bolts, allow adjustment of the position of the push-pull quick clamp 14 in the test frame 1, thereby enabling the testing of cylindrical batteries of different lengths.

[0022] In use, the U-shaped battery limiting seats 2 are symmetrically arranged in the test frame 1, which facilitates the placement of the battery body 3 to be tested in the test frame 1. The probes 6 in the positive copper shaft 4 and negative copper shaft 5 contact the battery body 3 to be tested, thereby enabling the testing of the internal resistance of the cylindrical battery. This utility model has a simple structure and is easy to use. It solves the serious size compatibility problem that exists in existing cylindrical battery internal resistance testing fixtures. It facilitates the testing of the internal resistance of cylindrical batteries, can be appropriately adjusted to adapt to cylindrical batteries of different lengths, and does not require frequent replacement of special fixtures, thus improving testing efficiency.

[0023] Although this specification describes embodiments, not every embodiment contains only one independent technical solution. This narrative style is merely for clarity. Those skilled in the art should consider the specification as a whole. The technical solutions in each embodiment can also be appropriately combined to form other embodiments that can be understood by those skilled in the art.

Claims

1. A fixture for testing the internal resistance of a cylindrical battery, characterized in that, The test includes a test frame (1), and U-shaped battery limiting seats (2) are symmetrically arranged inside the test frame (1). The battery body to be tested (3) is installed between the U-shaped battery limiting seats (2). Positive copper shaft (4) and negative copper shaft (5) are provided at both ends of the battery body to be tested (3), and probes (6) are installed inside both the positive copper shaft (4) and the negative copper shaft (5).

2. The cylindrical battery internal resistance testing fixture according to claim 1, characterized in that, A connecting plate (7) is slidably installed inside the test frame (1) on one side of the positive copper shaft (4), and guide grooves (8) that are slidably connected to the connecting plate (7) are opened on both sides of the test frame (1). A positive mounting plate (9) is installed on one side of the connecting plate (7), and the positive copper shaft (4) is installed on the positive mounting plate (9).

3. The cylindrical battery internal resistance testing fixture according to claim 2, characterized in that, A negative electrode mounting plate (10) is installed on one side of the negative electrode copper shaft (5) inside the test frame (1). A negative limit sleeve (11) is provided between the negative electrode mounting plate (10) and the U-shaped battery limit seat (2). A spring (12) is connected between the negative electrode mounting plate (10) and the inner wall of the test frame (1).

4. The cylindrical battery internal resistance testing fixture according to claim 3, characterized in that, A clamp mounting base (13) is detachably installed on one side of the connecting plate (7) on the test frame (1) by bolts. A push-pull quick clamp (14) is installed on the clamp mounting base (13). One end of the push-pull quick clamp (14) abuts against the connecting plate (7). Three sets of mounting holes (15) matching the bolts are opened on the test frame (1).

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