Lithium ion cylindrical battery test tool

Abstract

The utility model discloses a lithium ion cylindrical battery testing tool, and belongs to the technical field of battery testing. Comprising a positive test part; the insulation isolation part surrounds the outer side of the positive electrode test part; the cathode test part surrounds the outer side of the insulation isolation part; the first connecting sheet is connected with the positive electrode testing part; the second connecting sheet is connected with the negative electrode testing part; the positive electrode testing part is in contact with the positive electrode of the lithium ion cylindrical battery, and the negative electrode testing part is in contact with the negative electrode of the lithium ion cylindrical battery. The beneficial effects of the above technical scheme are that the positive and negative electrodes of the battery are in direct contact with the test tool, a traditional connecting sheet is not needed as a carrier, the insulation isolation part is arranged between the positive electrode test part and the negative electrode test part, the contact of the positive and negative electrodes of the test tool is effectively isolated, the test process is stable, and the test tool is rapidly dismounted and mounted. The reutilization can be realized.

Description

TECHNICAL FIELD

[0001] The utility model relates to battery test technical field especially relates to a lithium ion cylindrical battery test frock. BACKGROUND

[0002] When the traditional electric core is tested, the positive and negative electrode connecting piece contact short circuit phenomenon occurs during installation, which may trigger the electric core to spark and cause safety hazards; the electric core connecting piece needs to be welded manually, which is difficult to ensure the consistency of welding quality, and the negative electrode connecting piece is easy to fall off during transportation, and the connecting piece is also easy to fall off when the insulating tape is removed before use; the negative electrode connecting piece may also fall off due to external force during the installation of the electric core test line.

[0003] The utility model discloses a lithium ion battery connecting piece pastes film piece, cancels the existing pasting high temperature adhesive tape protection after assembling cover plate connecting piece welding, through lithium ion battery connecting piece pastes film piece, effectively avoid the problem that the roll core is torn in pasting and circulation, and the roll core is easy to form the internal folding short circuit after the core is combined. The utility model discloses a Chinese utility model patent with publication number CN219658928U discloses a I-shaped battery connecting piece, which can buffer vibration and prevent the connecting piece from falling off or cracking during transportation through the arch design of the arch-shaped section. The utility model discloses a Chinese utility model patent with publication number CN214013113U discloses a lithium ion battery connecting piece and a lithium ion battery, which sets an insulating patch on the outer surface of the bending guide part to form a covering on the outer surface of the bending guide part when the pole connecting plate is bent. Thus, short circuit failure between the bending guide part and the battery shell can be effectively prevented when the connecting piece is installed on the battery, thereby improving the safety performance of the battery.

[0004] However, the current test frock mainly uses the electric core welding connecting piece, and the connecting piece needs to be welded manually, which is difficult to ensure the consistency of welding quality. The existing technology mainly prevents the battery connecting piece from tearing and the positive and negative electrode connecting piece from short circuiting, but does not have the characteristics of quick disassembly and quick installation, which is difficult to achieve the effect of repeated use, causing waste in testing and being not conducive to improving work efficiency. UTILITY MODEL CONTENTS

[0005] The utility model aims at providing a lithium ion cylindrical battery test frock to solve the above technical problems.

[0006] A lithium ion cylindrical battery test frock comprises,

[0007] A positive electrode test part;

[0008] An insulating isolation part surrounds the outer side of the positive electrode test part.

[0009] a negative electrode testing part surrounding the outside of the insulating isolation part;

[0010] a first connecting piece connecting the positive electrode testing part;

[0011] a second connecting piece connecting the negative electrode testing part;

[0012] The positive electrode testing part is in contact with the positive electrode of the lithium ion cylindrical battery, and the negative electrode testing part is in contact with the negative electrode of the lithium ion cylindrical battery.

[0013] Preferably, the negative electrode testing part extends along the side of the lithium ion cylindrical battery to form a limiting part.

[0014] Preferably, the height of the positive electrode testing part is higher than the height of the insulating isolation part and the negative electrode testing part.

[0015] Preferably, the first connecting piece is vertically arranged on the positive electrode testing part, and the second connecting piece is vertically arranged on the negative electrode testing part.

[0016] Preferably, the first connecting piece and the second connecting piece are arranged in the same horizontal direction.

[0017] Preferably, a first fixing hole is arranged on the first connecting piece, and the first fixing hole is connected with a positive electrode voltage line; a second fixing hole is arranged on the second connecting piece, and the second fixing hole is connected with a negative electrode voltage line.

[0018] Preferably, the first fixing hole and the second fixing hole are circular.

[0019] Preferably, the first connecting piece is further connected with a positive electrode current line, and the second connecting piece is further connected with a negative electrode current line.

[0020] Preferably, the testing tool is integrally formed by injection molding, and the insulating isolation part is polyvinylidene fluoride.

[0021] Preferably, the testing tool is matched with the positive electrode end of the lithium ion cylindrical battery.

[0022] The battery positive and negative electrodes are directly in contact with the testing tool, and a traditional connecting piece is not needed as a carrier; the insulating isolation part is arranged between the positive electrode testing part and the negative electrode testing part, thereby effectively isolating the contact between the positive and negative electrodes of the testing tool, stabilizing the testing process, realizing the quick disassembly and installation of the testing tool, and enabling repeated use. BRIEF DESCRIPTION OF DRAWINGS

[0023] Figure 1 is a top view of the lithium ion cylindrical battery testing tool of the utility model;

[0024] Figure 2 isFigure 1 A-A line section view.

[0025] In the drawings: 1, negative test part; 2, positive test part; 3, insulation isolation part; 4, first connecting piece; 5, second connecting piece. DETAILED DESCRIPTION

[0026] The technical solutions in the embodiments of the present application will be clearly and completely described below with reference to the drawings in the embodiments of the present application. Obviously, the described embodiments are only part of the embodiments of the present application, rather than all the embodiments. Based on the embodiments in the present application, all other embodiments obtained by those skilled in the art without creative labor fall within the scope of protection of the present application.

[0027] It should be noted that the embodiments in the present application and the features in the embodiments can be combined with each other without conflict.

[0028] The present application will be further described below with reference to the drawings and specific embodiments, but is not limited to the present application.

[0029] A lithium ion cylindrical battery test tool, as shown in Figure 1 , Figure 2 , comprises,

[0030] a positive test part 2;

[0031] an insulation isolation part 3 surrounding the outer side of the positive test part 2;

[0032] a negative test part 1 surrounding the outer side of the insulation isolation part 3;

[0033] a first connecting piece 4 connecting the positive test part 2;

[0034] a second connecting piece 5 connecting the negative test part 1;

[0035] The positive test part 2 is in contact with the positive electrode of the lithium ion cylindrical battery, and the negative test part 1 is in contact with the negative electrode of the lithium ion cylindrical battery.

[0036] Specifically, the present application provides a lithium ion cylindrical battery test tool, which is sleeved on the positive electrode end of the lithium ion cylindrical battery, is suitable for any cylindrical battery core, and can be prepared according to the size of the cylindrical battery core. The test tool can be quickly disassembled and installed, can be reused, effectively isolates the contact between the positive and negative electrodes, and the test process is stable.

[0037] The positive electrode test part 2 directly contacts the positive electrode of the lithium ion cylindrical battery, and is used for testing the positive electrode performance of the battery. The insulating isolation part 3 is arranged outside the positive electrode test part 2, and plays an electrical insulation role, and ensures the isolation between the positive electrode test part 2 and the negative electrode test part 1. The negative electrode test part 1 is arranged outside the insulating isolation part 3, contacts the negative electrode of the lithium ion cylindrical battery, and is used for testing the negative electrode performance of the battery. The first connecting sheet 4 is connected to the positive electrode test part 2, and ensures the electrical connection between the positive electrode test part 2 and the test equipment. The second connecting sheet 5 is connected to the negative electrode test part 1, and ensures the electrical connection between the negative electrode test part 1 and the test equipment. The positive electrode and the negative electrode of the battery directly contact the test tool, and do not need a traditional connecting sheet as a carrier, thereby reducing the number of components directly connected to the battery, and the insulating isolation part 3 is arranged between the positive electrode test part 2 and the negative electrode test part 1, thereby effectively isolating the contact between the positive electrode and the negative electrode of the test tool, avoiding the short circuit phenomenon, and improving the test safety. The contact distance between the positive electrode and the negative electrode and the test tool is shortened, and the contact resistance is reduced.

[0038] In a preferred embodiment, the negative electrode test part 1 extends along the side of the lithium ion cylindrical battery to form a limiting part.

[0039] Specifically, the limiting part makes the tool cover more stable when testing the positive electrode end of the lithium ion cylindrical battery, prevents slipping during the test process, and affects the test result.

[0040] In a preferred embodiment, the height of the positive electrode test part 2 is higher than the height of the insulating isolation part 3 and the negative electrode test part 1.

[0041] Specifically, the positive electrode test part 2 is designed to be higher than the insulating isolation part 3 and the negative electrode test part 1, the positive electrode test part 2 can directly contact the positive electrode of the battery, and the insulating isolation part 3 and the negative electrode test part 1 surround the positive electrode test part 2. The height range of the positive electrode test part 2 can be adjusted, which is suitable for any cylindrical battery, and is helpful for quick disassembly and quick assembly.

[0042] In a preferred embodiment, the first connecting sheet 4 is vertically arranged on the positive electrode test part 2, and the second connecting sheet 5 is vertically arranged on the negative electrode test part 1.

[0043] The first connecting sheet 4 and the second connecting sheet 5 are arranged in the same horizontal direction.

[0044] Specifically, the first connecting sheet 4 is a positive electrode connecting sheet, the second connecting sheet 5 is a negative electrode connecting sheet, and the vertical installation of the first connecting sheet 4 and the second connecting sheet 5 can directly contact the positive electrode and the negative electrode of the battery, realize stable current transmission and signal acquisition, ensure the good electrical connection between the positive electrode and the negative electrode of the battery and the test equipment, can reduce the resistance, improve the efficiency of current transmission, and ensure the accuracy and reliability in the test process.

[0045] Further specifically, by arranging the first connecting piece 4 and the second connecting piece 5 in the same horizontal direction, the stability and consistency between the test components can be maintained.

[0046] In a preferred embodiment, the first connecting piece 4 is provided with a first fixing hole connected to the positive voltage line, and the second connecting piece 5 is provided with a second fixing hole connected to the negative voltage line.

[0047] The first fixing hole and the second fixing hole are circular.

[0048] The first connecting piece 4 is also connected to the positive current line, and the second connecting piece 5 is also connected to the negative current line.

[0049] Specifically, by connecting the voltage line to the connecting piece through the fixing hole, the accurate measurement of the positive and negative voltages of the battery is ensured, which helps to reduce the voltage drop and signal interference in the measurement, thereby improving the accuracy and stability of the test data. The connecting piece is also connected to the current line, which is used to measure the current output of the battery or the current change during charging and discharging, ensuring accurate monitoring of the current performance of the battery.

[0050] The positive and negative connecting pieces each have a circular hole for fixing the positive and negative voltage lines, and the current line is fixed at other positions on the connecting piece. The contact between the positive and negative electrodes and the voltage / current line is transferred from the battery to the tool, avoiding the safety hazards caused by direct welding on the battery, making the test process safer and more reliable.

[0051] In a preferred embodiment, the test tool is integrally formed by injection molding, and the insulating isolation part 3 is polyvinylidene fluoride.

[0052] The test tool is compatible with the positive electrode end of the lithium ion cylindrical battery.

[0053] Specifically, the test tool is integrally formed by injection molding, combining metal and insulating materials together. The PVDF (polyvinylidene fluoride) center is in contact with the metal material and the positive electrode of the battery, and the PVDF edge is embedded with a ring of metal material and the negative electrode of the battery. This realizes the quick disassembly and installation of the test tool, eliminates the occurrence of short circuits, and achieves the effect of repeated use, avoiding unnecessary waste and improving work efficiency and stability during the test process.

[0054] In summary, the present application provides a lithium ion cylindrical battery test tool for testing lithium ion cylindrical batteries and is suitable for any cylindrical battery. The test tool is integrally formed by injection molding and can be prepared according to the size of the cylindrical battery. The test tool can be quickly disassembled and installed and can be reused, effectively isolating the positive and negative electrodes and ensuring a stable test process.

[0055] The above merely describes preferred embodiments of the present application, and is not intended to limit the implementation and protection scope of the present application. For those skilled in the art, it should be understood that any equivalent substitutions and obvious changes made according to the content of the present application description and drawings should be included in the protection scope of the present application.

Claims

1. A lithium-ion cylindrical battery test fixture, characterized by, Comprising, a positive electrode testing part (2); an insulating isolation part (3) surrounding the outside of the positive electrode testing part (2); a negative electrode testing part (1) surrounding the outside of the insulating isolation part (3); a first connecting sheet (4) connecting the positive electrode testing part (2); a second connecting sheet (5) connecting the negative electrode testing part (1); the positive electrode testing part (2) is in contact with the positive electrode of a lithium ion cylindrical battery, and the negative electrode testing part (1) is in contact with the negative electrode of the lithium ion cylindrical battery.

2. The lithium-ion cylindrical battery test fixture of claim 1, wherein, The negative electrode testing part (1) extends along the side of the lithium ion cylindrical battery to form a limiting part.

3. The lithium-ion cylindrical battery test fixture of claim 1, wherein, The height of the positive electrode testing part (2) is higher than the height of the insulating isolation part (3) and the negative electrode testing part (1).

4. The lithium-ion cylindrical battery test fixture of claim 1, wherein, The first connecting sheet (4) is vertically arranged on the positive electrode testing part (2), and the second connecting sheet (5) is vertically arranged on the negative electrode testing part (1).

5. The lithium-ion cylindrical battery test fixture of claim 1, wherein, The first connecting sheet (4) and the second connecting sheet (5) are arranged in the same horizontal direction.

6. The lithium-ion cylindrical battery test fixture of claim 1, wherein, The first connecting sheet (4) is provided with a first fixing hole, and the first fixing hole is connected with a positive electrode voltage line; the second connecting sheet (5) is provided with a second fixing hole, and the second fixing hole is connected with a negative electrode voltage line.

7. The lithium-ion cylindrical battery test fixture of claim 6, wherein, The first fixing hole and the second fixing hole are circular.

8. The lithium-ion cylindrical battery test fixture of claim 6, wherein, The first connecting sheet (4) is further connected with a positive electrode current line, and the second connecting sheet (5) is further connected with a negative electrode current line.

9. The lithium-ion cylindrical battery test fixture of claim 1, wherein, The test tool is integrally formed by injection molding, and the insulating isolation part (3) is polyvinylidene fluoride.

10. The lithium-ion cylindrical battery test fixture of claim 1, wherein, The test tool is matched with the positive electrode end of the lithium ion cylindrical battery.

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