Battery cell drawing test tool convenient to adjust

Abstract

The utility model discloses a battery cell drawing test tool convenient to adjust. The battery cell drawing test tool comprises a clamping mechanism used for clamping and fixing a battery cell; the first connecting column is detachably mounted on the lower surface of the clamping mechanism, and a locking ring is arranged on the outer surface of the first connecting column; the self-adaptive mechanism is arranged at the lower end of the first connecting column and is used for carrying out self-adaptive adjustment on the position of the clamping mechanism during the drawing test; by arranging the clamping mechanism, the first connecting column, the self-adaptive mechanism and the second connecting column, drawing force tests at different angles can be conveniently carried out, battery cells of different specifications can be rapidly fixed, the situation that the test angle is single and inconvenient to adjust is avoided, the device is simple in structure, a current 180-degree stripping tool and a current 90-degree drawing force test tool are integrated, and the test efficiency is improved. The device can be compatible with welding tension tests of multi-size battery cell connecting pieces or welding tests of cover plates.

Description

Technical Field

[0001] The utility model specifically relates to an electric core pulling test tool which is easy to adjust. Background Art

[0002] The main purpose of the battery pull-out test is to evaluate the tensile strength and elongation performance during the welding process. Through this test, the performance of the battery in the tensile state after welding can be tested to determine whether it can withstand the designed load and avoid fracture. In addition, the pull-out test after welding can also check the quality and processing technology of the battery to ensure that it meets the relevant standards and specifications.

[0003] The existing battery cell pull-out test fixture is relatively simple, with only a single base. It is not convenient to fix battery cells of different specifications during testing, and the test angle cannot be adjusted to ensure that the object under test and the tensile machine are on the same vertical line. The test results may have errors. For this reason, we propose a battery cell pull-out test fixture that is easy to adjust. Utility Model Content

[0004] The utility model aims to provide a battery core pulling test fixture which is easy to adjust, so as to solve the problems raised in the above-mentioned background technology.

[0005] To achieve the above purpose, the utility model provides the following technical solution: a battery core pull-out test tool that is easy to adjust, comprising:

[0006] A clamping mechanism for clamping and fixing the battery core;

[0007] A first connecting column is detachably mounted on the lower surface of the clamping mechanism, and a locking ring is provided on the outer surface of the first connecting column;

[0008] An adaptive mechanism is arranged at the lower end of the first connecting column, and adaptively adjusts the position of the clamping mechanism during the pull-out test;

[0009] The second connecting column is arranged on the lower surface of the adaptive mechanism to cooperate with the base of the drawing machine.

[0010] Preferably, the clamping mechanism includes a clamping block, a connecting tube, a guide rod, a limiting clamping plate and an adjusting threaded rod. A guide rod is fixed to the inner edge of the clamping block. The limiting clamping plate is slidably installed inside the clamping block through the guide rod, and a spring is sleeved on the outer surface of the guide rod to push the limiting clamping plate to reset. An adjusting threaded rod is connected to one end of the inner side of the clamping block through a threaded portion, and the adjusting threaded rod is in contact with the limiting clamping plate. A connecting tube that cooperates with the first connecting column is fixed to the other end of the clamping block.

[0011] Preferably, the connecting tube is provided at two locations, and the connecting tube at another location is fixed to the lower surface of the clamping block.

[0012] Preferably, a side wall of the limiting clamp is provided with foam.

[0013] Preferably, the adaptive mechanism includes a longitudinal slide rail, a first slider, a transverse slide rail and a second slider. The longitudinal slide rail is detachably mounted on the second connecting column through a bracket, and the first slider is slidably connected to the longitudinal slide rail. The transverse slide rail is fixed on the first slider, and the first slider is slidably connected to the second slider that cooperates with the first connecting column.

[0014] Preferably, the longitudinal slide rail and the transverse slide rail are perpendicular to each other.

[0015] Compared with the prior art, the beneficial effects of the utility model are:

[0016] This patent is provided with a clamping mechanism, a first connecting column, an adaptive mechanism and a second connecting column, which facilitates pull-out force tests at different angles and quickly fixes battery cells of different specifications, avoiding a single test angle and inconvenient adjustment. The device has a simple structure and integrates the current 180-degree peeling and 90-degree pull-out force test tooling. It is compatible with welding pull-out tests of battery cell connectors of multiple sizes or cover plate welding tests, and has a wide range of applications. During the test, the two-way guide rail will automatically adjust the pull angle as the tensile machine moves upward to ensure that it is on a unified vertical line, ensuring that the test pull tends to an accurate value. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1 It is a schematic diagram of the structure of the utility model;

[0018] Figure 2 This is a schematic diagram of the clamping block structure of the utility model;

[0019] Figure 3 This is a schematic diagram of the adaptive mechanism structure of the utility model;

[0020] Figure 4 This is a schematic diagram of the foam structure of the utility model.

[0021] In the figure: 1. Clamping mechanism; 101. Clamping block; 102. Connecting tube; 103. Guide rod; 104. Limiting clamp; 1041. Foam; 105. Adjusting threaded rod; 2. First connecting column; 3. Adaptive mechanism; 31. Longitudinal slide rail; 32. First slider; 33. Transverse slide rail; 34. Second slider; 4. Second connecting column. DETAILED DESCRIPTION

[0022] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0023] See also Figure 1-Figure 4 The utility model provides a technical solution: a battery core pull-out test tool that is easy to adjust, comprising:

[0024] A clamping mechanism 1 for clamping and fixing the battery cell, which facilitates the rapid fixing of battery cells of different sizes;

[0025] The first connecting column 2 is detachably mounted on the lower surface of the clamping mechanism 1, and a locking ring is provided on the outer surface of the first connecting column 2 to facilitate quick connection of the adaptive mechanism 3 to the clamping mechanism 1;

[0026] The adaptive mechanism 3 is arranged at the lower end of the first connecting column 2. During the pulling test, the position of the clamping mechanism 1 is adaptively adjusted, so that the two-way guide rail can automatically adjust the tension angle as the tensile machine moves upward during the test;

[0027] The second connecting column 4 is arranged on the lower surface of the adaptive mechanism 3 to cooperate with the base of the drawing machine.

[0028] In this embodiment, preferably, the clamping mechanism 1 includes a clamping block 101, a connecting tube 102, a guide rod 103, a limiting clamping plate 104 and an adjusting threaded rod 105. The guide rod 103 is fixed to the inner edge of the clamping block 101, and the limiting clamping plate 104 is slidably installed inside the clamping block 101 through the guide rod 103, and the outer surface of the guide rod 103 is sleeved with a spring for pushing the limiting clamping plate 104 to reset. One end of the inner side of the clamping block 101 is connected to the adjusting threaded rod 105 through a threaded portion to facilitate adjustment of the position of the limiting clamping plate 104, and the adjusting threaded rod 105 is in contact with the limiting clamping plate 104, and the other end of the clamping block 101 is fixed with a connecting tube 102 that cooperates with the first connecting column 2 to facilitate connection with the first connecting column 2 through the threaded portion.

[0029] In this embodiment, preferably, the connecting tube 102 is provided at two locations, and the other connecting tube 102 is fixed to the lower surface of the clamping block 101, so as to facilitate adjustment of the position of the clamping block 101 when testing the pulling force at different angles.

[0030] In this embodiment, preferably, a side wall of the limiting clamping plate 104 is provided with foam 1041 to reduce scratches on the battery cell and improve flexibility.

[0031] In this embodiment, preferably, the adaptive mechanism 3 includes a longitudinal slide rail 31, a first slider 32, a transverse slide rail 33 and a second slider 34. The longitudinal slide rail 31 is detachably mounted on the second connecting column 4 through a bracket, and the first slider 32 is slidably connected to the longitudinal slide rail 31, the transverse slide rail 33 is fixed to the first slider 32, and the first slider 32 is slidably connected to the second slider 34 that cooperates with the first connecting column 2, so as to facilitate horizontal and vertical movement, so as to automatically adjust according to the pulling angle to ensure vertical testing during the test.

[0032] In this embodiment, preferably, the longitudinal slide rail 31 and the transverse slide rail 33 are perpendicular to each other to facilitate better direction adjustment.

[0033] The working principle and use process of the utility model are as follows: when in use, fix the second connecting column 4 to the base of the blue light tensile machine, tighten the locking ring on the outer surface of the second connecting column 4, confirm that the sample is a 90-degree tensile test or a 180-degree tensile test, and then choose to connect the first connecting column 2 to the inner side of one of the connecting tubes 102, and rotate the locking ring to fix the first connecting column 2 to the connecting tube 102, and put the object to be tested between the limiting clamping plate 104 and the clamping block 101. The object to be tested is the pole ear welded to the battery cell connecting piece. In addition, For the welded cell cover or welded shell, manually tighten the adjusting threaded rod 105, and the adjusting threaded rod 105 pushes the limiting clamp 104 to move along the guide rod 103, so that the object to be tested is clamped by the limiting clamp 104 and the clamp block 101, and the clamping jaws of the tensile testing machine clamp one end of the object to be tested, and the tensile testing machine is turned on. In the rising stage of the clamping jaws of the tensile testing machine, the second slider 34 slides freely on the transverse slide rail 33, and the first slider 32 slides freely on the longitudinal slide rail 31 to ensure vertical testing during the test and read the test results of the tensile testing machine.

[0034] Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions and variations may be made to the embodiments without departing from the principles and spirit of the present invention, and that the scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. A battery cell pull-out test tool that is easy to adjust, characterized in that: include: A clamping mechanism (1) for clamping and fixing the battery core; A first connecting column (2) is detachably mounted on the lower surface of the clamping mechanism (1), and a locking ring is provided on the outer surface of the first connecting column (2); An adaptive mechanism (3) is arranged at the lower end of the first connecting column (2) and adaptively adjusts the position of the clamping mechanism (1) during a pull-out test; The second connecting column (4) is arranged on the lower surface of the adaptive mechanism (3) to cooperate with the base of the drawing machine.

2. The easily adjustable battery core pull-out test fixture according to claim 1, characterized in that: The clamping mechanism (1) comprises a clamping block (101), a connecting tube (102), a guide rod (103), a limiting clamping plate (104) and an adjusting threaded rod (105); the inner edge of the clamping block (101) is fixed with a guide rod (103); the limiting clamping plate (104) is slidably installed inside the clamping block (101) through the guide rod (103); and the outer surface of the guide rod (103) is sleeved with a spring for pushing the limiting clamping plate (104) to reset; one end of the inner side of the clamping block (101) is connected with an adjusting threaded rod (105) through a threaded portion, and the adjusting threaded rod (105) is in contact with the limiting clamping plate (104); and the other end of the clamping block (101) is fixed with a connecting tube (102) matched with the first connecting column (2).

3. The easily adjustable battery core pull-out test fixture according to claim 2, characterized in that: The connecting tube (102) is provided at two locations, and the connecting tube (102) is fixed to the lower surface of the clamping block (101) at another location.

4. The easily adjustable battery core pull-out test fixture according to claim 2, characterized in that: A side wall of the limiting clamping plate (104) is provided with foam (1041).

5. The easily adjustable battery core pull-out test fixture according to claim 3, characterized in that: The adaptive mechanism (3) comprises a longitudinal slide rail (31), a first slider (32), a transverse slide rail (33) and a second slider (34); the longitudinal slide rail (31) is detachably mounted on the second connecting column (4) via a bracket, and the longitudinal slide rail (31) is slidably connected to the first slider (32); the transverse slide rail (33) is fixed to the first slider (32); and the first slider (32) is slidably connected to the second slider (34) matched with the first connecting column (2).

6. The easily adjustable battery core pull-out test fixture according to claim 5, characterized in that: The longitudinal slide rail (31) and the transverse slide rail (33) are perpendicular to each other.

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