Small-sized soft package battery cell electrical performance test tool

Abstract

The utility model relates to the field of battery cell testing, in particular to a small-sized soft package battery cell electrical performance testing tool which comprises a base used for fixing a battery cell and two groups of adjusting columns connected with two tabs of the battery cell respectively, each adjusting column comprises at least three groups of movable joints which are hinged and matched with one another, and the hinge axes of the adjacent movable joints are perpendicular to one another. The lowermost movable joint is fixed on the base, the uppermost movable joint is provided with a mounting table for fixing battery cell testing equipment, and the battery cell testing equipment is connected with a tab of a battery cell through a current clamp on the mounting table. The testing device can be adapted to tests of different types of battery cells, and can be effectively connected with tabs of various battery cells.

Description

Technical Field

[0001] The utility model relates to the field of battery core testing, in particular to a tooling for testing the electrical performance of a small soft-pack battery core. Background Art

[0002] The existing soft-pack battery cells are mainly composed of aluminum-plastic film and core materials wrapped in the aluminum-plastic film. The core materials are specifically composed of positive and negative electrode ears, laminated or wound positive and negative electrode materials. The general packaging process is as follows: first, the positive and negative electrode sheets and separators are wound / stacked to form the core material, then holes are punched on the aluminum-plastic film to place the core material, and after placing the core material, the aluminum-plastic film is folded in half to cover the core material, and the electrolyte is injected, and finally heat-sealed after formation and evacuation. After the soft-pack battery cells are produced, manufacturers often need to test the electrical performance and installation reliability of the battery cells.

[0003] As described in patent number "CN220795421U", the existing soft-pack battery cell test tool places the square battery cell in a fixture shell with its tabs facing upward. A test unit is set on the top of the fixture shell. The distance between the two test units is adjusted according to the distance between the positive and negative tabs of the square battery cell, so as to detect the square battery cell. This type of test tool can only be limited to detecting square batteries with tabs on the same side. With the rapid development of soft-pack batteries, the tabs of the battery cells are no longer limited to being on the same side of the battery cell, but may be symmetrically distributed on both sides of the battery cell. The shape of the battery cell is not limited to square. There are other shapes of battery cells such as honeycomb. The change in shape will also change the position of the corresponding tab. For this type of battery cell, the existing soft-pack battery cell test tool cannot establish a good connection with the tabs of the battery cell, so it needs to be solved urgently. Utility Model Content

[0004] In order to avoid and overcome the technical problems existing in the prior art, the utility model provides a small soft-pack battery cell electrical performance test tool. The utility model can be adapted to the test of different types of battery cells and establish an effective connection with the tabs of various types of battery cells.

[0005] In order to achieve the above purpose, the utility model provides the following technical solutions:

[0006] A small soft-pack battery cell electrical performance testing tool comprises a base for fixing the battery cell, and two groups of adjustment columns respectively connected to two pole ears of the battery cell, the adjustment columns comprise at least three groups of movable joints hingedly matched with each other, the hinge axes of adjacent movable joints are perpendicular to each other, the lowermost movable joint is fixed on the base, and the uppermost movable joint is equipped with a mounting table for fixing a battery cell testing device, and the battery cell testing device is connected to the pole ears of the battery cell through a current clamp on the mounting table.

[0007] As a further solution of the utility model: when each movable joint is arranged along the vertical direction, the mounting platform is arranged in parallel with the base, and a positioning hole is opened on the mounting platform for installing the battery cell testing equipment.

[0008] As a further solution of the utility model: a flexible and bendable connecting belt is provided at the end of the mounting platform, and the current clamp is fixed at one end of the connecting belt adjacent to the battery cell; the current clamp has a U-shaped elastic clamping opening, and the battery cell's pole ear is inserted into the elastic clamping opening of the current clamp and clamped and fixed.

[0009] As a further solution of the utility model: the hinge axes of the lowermost movable joints of the two adjusting columns are parallel to each other.

[0010] As a further solution of the utility model: the surface of the base is divided into a battery cell fixing area and an adapter movable area, and four corner ends of the battery cell fixing area are provided with loading and unloading holes for installing battery cell clamps.

[0011] As a further solution of the utility model: a slide rail is provided on the movable area of ​​the adapter in a direction parallel to the installation direction of the battery core, and the two adapters are installed on the slide rail and slidably cooperate with the slide rail.

[0012] As a further solution of the utility model: a limit block is installed in the middle of the slide rail, the limit block is made of insulating material and is used to limit the contact between the two adapters.

[0013] Compared with the prior art, the beneficial effects of the utility model are:

[0014] 1. The adjusting column of the utility model is composed of multiple groups of hinged movable joints. By rotating the movable joints, the mounting platform at the end of the adjusting column can be driven to perform horizontal flipping, vertical flipping and other actions, thereby changing the position of the current clamp on the mounting platform. After the position of the current clamp is adjusted, an effective connection can be established with the tabs of various types of battery cells, thereby adapting to the testing of different types of battery cells.

[0015] 2. The utility model opens a positioning hole on the mounting table, so that the battery cell testing equipment can be detachably fixed on the mounting table, and different testing equipment can be replaced for different tests; the battery cell pole ear with a certain slope can be adapted to be clamped by bending the connecting belt, and the battery cell pole ear can be clamped and fixed after inserting the battery cell pole ear into the elastic clamp of the current clamp; the arrangement of the movable joint can form compensation for the connecting belt, so as to prevent the connecting belt from being excessively stretched or twisted, which would cause damage to the connecting belt body.

[0016] 3. The base of the utility model is divided into a battery cell fixing area and an adapter movable area, so that the sliding of the adapter and the fixation of the battery cell do not interfere with each other. After the battery cell is placed in the battery cell fixing area, different sizes of battery cells can be clamped and fixed by installing different clamps in the loading and unloading holes.

[0017] 4. The utility model provides a slide in the active area of ​​the adapter, so that the position of the adjustment column can be roughly adjusted first, so that its position roughly matches the position of the battery cell ear, and then the position of the current clamp can be fine-tuned by rotating the active joint to complete the connection; the installation of the limit block can avoid direct contact between the two sets of adapters to avoid short circuit. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] Figure 1 It is a structural schematic diagram of the utility model.

[0019] In the figure:

[0020] 1. Base; 11. Cell fixing area; 111. Loading and unloading hole;

[0021] 12. Adapter activity area; 13. Slide rail; 131. Limit block;

[0022] 2. Adapter; 21. Adjustment column; 211. Activity joint;

[0023] 22. Mounting table; 221. Positioning hole; 222. Connecting belt; 223. Current clamp. DETAILED DESCRIPTION

[0024] 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.

[0025] See also Figure 1 In an embodiment of the utility model, a small soft-pack battery cell electrical performance testing tool includes a base 1, the surface of the base 1 is divided into a battery cell fixing area 11 and an adapter activity area 12, and the four corner ends of the battery cell fixing area 11 are provided with loading and unloading holes 111, and the loading and unloading holes 111 are used to install a detachable clamp to clamp and fix the battery cell placed in the battery cell fixing area 11.

[0026] A slide rail 13 is provided in the adapter activity area 12 along the direction parallel to the fixing direction of the battery core. Two sets of adapters 2 are installed on the slide rail 13 to slide with the slide rail 13. After the adapters 2 slide with the slide rail 13, they can be positioned by means of a positioning pin or a block. A limit block 131 is fixed in the middle of the slide rail 13. The limit block 131 is preferably made of an insulating material such as rubber, which is used to limit the sliding range of the two adapters 2 to prevent the two adapters 2 from short-circuiting after contact.

[0027] The adapter 2 includes a seat body that is slidably matched with the slide rail 13, and an adjustment column 21 fixed on the seat body, and the adjustment column 21 includes at least three groups of movable joints 211, and adjacent movable joints 211 are hingedly matched. In a non-working state, the movable joints 211 are arranged in a vertical direction, and the hinge axes between adjacent movable joints 211 are skewed and perpendicular.

[0028] The hinge axis of the movable joint 211 of the adjacent base 1 is arranged perpendicular to the slide rail 13, and a mounting platform 22 is fixed to the end of the movable joint 211 away from the base 1. A positioning hole 221 is provided at the center of the mounting platform 22 for mounting different battery cell testing equipment by magnetic attraction or threaded fitting. The mounting platform 22 is made of conductive material. In the non-working state, the mounting platform 22 is arranged horizontally, and a conductive connecting belt 222 is arranged on the surface of the mounting platform 22 on one side of the adjacent battery cell.

[0029] The connecting belt 222 is a flexible belt that can be bent, and a current clamp 223 is installed at one end of the connecting belt 222 away from the mounting platform 22. The current clamp 223 has a U-shaped elastic clamping opening, and the pole ear of the battery cell is inserted into the elastic clamping opening of the current clamp 223 to be clamped and fixed.

[0030] The adapter 2 is moved along the length direction of the slide rail 13. After the position of the adapter 2 is roughly adjusted, the position of the mounting platform 22 and the current clamp 223 can be adjusted by rotating the movable joint 211 on the adjustment column 21 to adapt to the pole ears with different arrangement directions on different battery cells.

[0031] The basic principles of the present application are described above in conjunction with specific embodiments. However, it should be noted that the advantages, strengths, effects, etc. mentioned in the present application are only examples and not limitations, and it cannot be considered that these advantages, strengths, effects, etc. are required by each embodiment of the present application. In addition, the specific details disclosed above are only for the purpose of illustration and ease of understanding, not for limitation, and the above details do not limit the present application to being implemented by adopting the above specific details.

[0032] The block diagrams of the devices, apparatuses, equipment, and systems involved in this application are only illustrative examples and are not intended to require or imply that they must be connected, arranged, and configured in the manner shown in the block diagram. As will be appreciated by those skilled in the art, these devices, apparatuses, equipment, and systems can be connected, arranged, and configured in any manner. Words such as "including", "comprising", "having", etc. are open words, referring to "including but not limited to", and can be used interchangeably with them. The words "or" and "and" used here refer to the words "and / or" and can be used interchangeably with them, unless the context clearly indicates otherwise. The words "such as" used here refer to the phrase "such as but not limited to", and can be used interchangeably with them.

Claims

1. A small soft-pack battery cell electrical performance test tool, characterized in that: The invention comprises a base (1) for fixing a battery cell, and two groups of adjustment columns (21) respectively connected to two pole ears of the battery cell, wherein the adjustment columns (21) comprise at least three groups of movable joints (211) hingedly matched with each other, the hinge axes of adjacent movable joints (211) being perpendicular to each other, the lowermost movable joint (211) being fixed on the base (1), and a mounting platform (22) for fixing a battery cell testing device being mounted on the uppermost movable joint (211), and the battery cell testing device being connected to the pole ears of the battery cell via a current clamp (223) on the mounting platform (22).

2. A small-sized soft-pack battery cell electrical performance test tool according to claim 1, characterized in that: When the movable joints (211) are arranged along the vertical direction, the mounting platform (22) is arranged in parallel with the base (1), and a positioning hole (221) is provided on the mounting platform (22) for installing the battery cell testing equipment.

3. A small-sized soft-pack battery cell electrical performance test tool according to claim 2, characterized in that: A flexible and bendable connecting belt (222) is provided at the end of the mounting platform (22), and a current clamp (223) is fixed to one end of the connecting belt (222) adjacent to the battery cell; the current clamp (223) has a U-shaped elastic clamping opening, and the pole ear of the battery cell is inserted into the elastic clamping opening of the current clamp (223) to be clamped and fixed.

4. A small-sized soft-pack battery cell electrical performance test tool according to claim 1, characterized in that: The hinge axes of the lowermost movable joints (211) of the two adjusting columns (21) are parallel to each other.

5. A small-sized soft-pack battery cell electrical performance test tool according to any one of claims 1 to 4, characterized in that: The surface of the base (1) is divided into a battery cell fixing area (11) and an adapter movable area (12), and four corner ends of the battery cell fixing area (11) are provided with loading and unloading holes (111) for installing battery cell clamps.

6. A small-sized soft-pack battery cell electrical performance test tool as claimed in claim 5, characterized in that: A slide rail (13) is provided on the adapter active area (12) in a direction parallel to the battery core installation direction, and the two adapters (2) are installed on the slide rail (13) and slideably cooperate with the slide rail (13).

7. A small-sized soft-pack battery cell electrical performance testing tool as claimed in claim 6, characterized in that: A limit block (131) is installed in the middle of the slide rail (13), and the limit block (131) is made of insulating material and is used to limit the contact between the two adapters (2).

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