CN220207288U

CN220207288U - Tab welding tension testing device

Info

Publication number: CN220207288U
Application number: CN202320536560.3U
Authority: CN
Inventors: 靳连成; 李晓海; 王贵超
Original assignee: Tianjin EV Energies Co Ltd
Current assignee: Tianjin EV Energies Co Ltd
Priority date: 2023-03-17
Filing date: 2023-03-17
Publication date: 2023-12-19
Anticipated expiration: 2033-03-17

Abstract

The application provides a tab welding tension testing arrangement presss from both sides tight copper bar stop mechanism through using fixture to press from both sides tightly fixedly to the copper bar through copper bar stop mechanism, and presss from both sides tightly the tab through tab fixture, and tab fixture applys ascending pulling force to the tab, until the tab breaks with the welded part of copper bar, thereby the biggest bearing pulling force of test tab and copper bar welded part. Therefore, the parallel clamping of the lug and the copper bar is realized, the fixing of the lug and the copper bar is more convenient, and the measured tension value is more accurate.

Description

Tab welding tension testing device

Technical Field

The utility model belongs to the technical field of soft package battery testing, and particularly relates to a tab welding tension testing device.

Background

With the development of industry, the soft-pack battery is widely applied to the life of people. In the production process of the soft-package battery, the positive and negative electrode lugs are connected with the positive and negative electrode connecting sheets in a welding mode, and then the lugs are pulled out by using external force through related instruments to test the welding effect. There are often a number of technical problems with the prior art that result in inaccurate values being tested. The copper bar is usually clamped by the bottom of the tensile tester, and the upper part clamps the lug for drawing force test. The copper bar and the tab position cannot be guaranteed to be parallel to the tensile force tester in the test process, the copper bar and the tab position are easy to tear in the drawing process, the tested tensile force is a non-true value, and the tensile force is inaccurate due to the fact that the copper bar is narrow in clamping area and easy to slip in the whole drawing process.

Disclosure of Invention

In view of the above, the present utility model is directed to a tab welding tension testing device, so as to improve the accuracy of the tab drawing force measurement value and simplify the tab tension testing operation.

In order to achieve the above purpose, the technical scheme of the utility model is realized as follows:

the application discloses a tab welding tension testing device, which comprises a tab clamping mechanism, a copper bar limiting mechanism and a clamping mechanism which are sequentially arranged from top to bottom; the electrode lug clamping mechanism is used for clamping the electrode lug, the copper bar limiting mechanism is clamped by the clamping mechanism and used for limiting and clamping the copper bar, the copper bar is connected with the electrode lug in a welded mode, and the electrode lug clamping mechanism applies vertical upward pulling force to the electrode lug;

the copper bar limiting mechanism comprises two limiting blocks;

the copper bar limiting mechanism comprises a clamping assembly, and the clamping assembly is used for clamping the copper bar on the limiting block.

Optionally, two the stopper sets up relatively, the upper end of stopper is equipped with spacing arch, two on the stopper spacing arch sets up relatively.

Optionally, the clamping assembly includes supporting shoe, elastic rod and clamping lever, the supporting shoe sets up two between the stopper, the one end of elastic rod with the stopper is connected, the other end with the supporting shoe is connected, the top of supporting shoe supports and leans on the bottom of copper bar, the clamping lever wears to establish on the stopper, the one end orientation of clamping lever the supporting shoe sets up, the other end sets up the stopper outside, the clamping lever is rotated the time the stopper presss from both sides tightly the copper bar.

Optionally, the fixture includes two relative clamping bodies and the clamping screw that set up, two be equipped with the screw thread through-hole on the clamping body, clamping screw wears to establish two in the screw thread through-hole on the clamping body, clamping screw's one end is equipped with rotatory handle.

Optionally, the fixture further includes a clamping block, one clamping block is disposed on the upper portion of each of the two clamping bodies (703), the two clamping blocks are disposed opposite to each other, and opposite sides of the two clamping blocks are clamped with the outer sides of the limiting blocks in a mutually matched manner.

Optionally, friction stripes are arranged on two opposite sides of the clamping blocks and on the outer sides of the limiting blocks.

Optionally, the utmost point ear fixture includes "U" type clamping body, utmost point ear grip block and utmost point ear clamping lever, utmost point ear grip block is equipped with two, two utmost point ear grip block sets up respectively relatively "U" the inboard of the clamping body, utmost point ear clamping lever one end with utmost point ear grip block is connected, and the other end passes "U" type clamping body (401) sets up "U" the outside of the clamping body, the rotation promotion of utmost point ear clamping lever utmost point ear grip block removes, thereby right the utmost point ear is pressed from both sides.

Compared with the prior art, the tab tension testing device has the following beneficial effects:

this application presss from both sides tight copper bar stop gear through using fixture to press from both sides tightly fixedly to the copper bar through copper bar stop gear, and presss from both sides tightly the utmost point ear through utmost point ear fixture, and upward pulling force is applyed to utmost point ear fixture to utmost point ear, until the welding department of utmost point ear and copper bar breaks, thereby the biggest bearing pulling force of test utmost point ear and copper bar welding department. Therefore, the parallel clamping of the lug and the copper bar is realized, the fixing of the lug and the copper bar is more convenient, and the measured tension value is more accurate.

Drawings

The accompanying drawings, which are included to provide a further understanding of the utility model and are incorporated in and constitute a part of this specification, illustrate embodiments of the utility model and together with the description serve to explain the utility model. In the drawings:

fig. 1 is a schematic diagram of the overall structure of a tab welding tension testing device according to an embodiment of the present utility model;

fig. 2 is a schematic front view of a clamping mechanism and a copper bar limiting mechanism according to an embodiment of the present utility model;

FIG. 3 is an isometric view of a clamping mechanism and a copper bar spacing mechanism according to an embodiment of the present utility model;

fig. 4 is an isometric view of a copper bar limiting mechanism according to an embodiment of the present utility model.

Reference numerals illustrate:

1. a support block; 2. a copper bar; 3. a clamping mechanism; 4. a tab clamping mechanism; 401. a U-shaped clamping body; 402. a lug clamping block; 403. a tab clamping lever; 5. a copper bar limiting mechanism; 601. a limiting block; 602. an elastic rod; 603. a clamping rod; 701. a clamping block; 702. rotating the handle; 703. a clamping body; 704. clamping a screw; 8. rubbing stripes.

Detailed Description

It should be noted that, without conflict, the embodiments of the present utility model and features of the embodiments may be combined with each other.

The utility model will be described in detail below with reference to the drawings in connection with embodiments.

The application discloses utmost point ear welding tensile testing device, including utmost point ear fixture 4, copper bar stop gear 5 and fixture 3 that from top to bottom set gradually.

The lug clamping mechanism 4 is used for clamping the lug, the clamping mechanism 3 is used for clamping the copper bar limiting mechanism 5, the copper bar limiting mechanism 5 is used for limiting and clamping the copper bar 2, the copper bar 2 is connected with the lug in a welded mode, and the lug clamping mechanism 4 applies vertical upward pulling force to the lug.

The copper bar limiting mechanism 5 comprises a clamping assembly for clamping the copper bar 2 on the limiting block 601.

This application is through using fixture 3 to press from both sides tight copper bar stop gear 5 to press from both sides tightly fixedly copper bar 2 through copper bar stop gear 5, and press from both sides tightly the utmost point ear through utmost point ear fixture 4, and upward pulling force is applyed to utmost point ear fixture 4 to the utmost point ear, until the welding department of utmost point ear and copper bar 2 breaks, thereby the biggest bearing pulling force of test utmost point ear and copper bar 2 welding department. Therefore, the parallel clamping of the lug and the copper bar 2 is realized, the fixing of the lug and the copper bar 2 is more convenient, and the measured tension value is more accurate.

Specifically, the copper bar limiting mechanism 5 comprises two limiting blocks 601, the two limiting blocks 601 are oppositely arranged, limiting protrusions are arranged at the upper ends of the limiting blocks 601, the limiting protrusions on the two limiting blocks 601 are oppositely arranged, and an included angle at the corner between each limiting protrusion and each limiting block 601 is a right angle. In the vertical direction, the copper bar 2 is arranged below the limiting protrusion, namely the limiting protrusion limits the copper bar 2 and prevents the copper bar 2 from moving upwards.

Further, the clamping assembly comprises a supporting block 1, an elastic rod 602 and a clamping rod 603, wherein the supporting block 1 is arranged between the two limiting blocks 601 and is positioned below the limiting protrusions. The elastic rod 602 includes two sections of rods sleeved with each other, a spring is arranged between the two sections of rods, and the elastic rod 602 can be contracted or extended in the axial direction. One end of the elastic rod 602 is fixedly connected with the limiting block 601, and the other end is fixedly connected with the supporting block 1. The elastic rods 602 are provided in plurality, and the plurality of elastic rods 602 are respectively arranged at two sides of the supporting block 1 and connect the supporting block 1 with the limiting block 601. The top of the supporting block 1 is abutted against the bottom of the copper bar 2 to support the copper bar 2. The clamping rod 603 is arranged on the limiting block 601 in a penetrating mode, one end of the clamping rod 603 faces the supporting block 1, the other end of the clamping rod 603 is arranged on the outer side of the limiting block 601, the clamping rod 603 arranged on the outer side of the limiting block 601 is a rotating portion, and the limiting block 601 is enabled to clamp the copper bar 2 after the clamping rod 603 rotates.

Specifically, the clamping mechanism 3 includes two clamping bodies 703 and clamping screws 704 that are oppositely arranged, threaded through holes are formed in the two clamping bodies 703, the clamping screws 704 are arranged in the threaded through holes in the two clamping bodies 703 in a penetrating manner, and one end of each clamping screw 704 is provided with a rotary handle 702. The rotation of the rotary handle 702 drives the clamping screw 704 to rotate, so that the two clamping bodies 703 are close to or far away from each other, and the two clamping bodies 703 clamp the limiting block 601.

The clamping screw 704 is also provided with a connecting seat in a penetrating way, and the connecting seat can be connected with an operation platform or other equipment, so that the testing device is arranged at a non-use position.

Preferably, the clamping mechanism 3 further comprises a clamping block 701, the upper parts of the two clamping bodies 703 are respectively provided with a clamping block 701, and the clamping blocks 701 are rotatably connected with the clamping bodies 703, so that the angle of the clamping blocks 701 can be adjusted according to actual needs. The two clamping blocks 701 are oppositely arranged, and one side of the two opposite clamping blocks 701 is matched and clamped with the outer side of the limiting block 601. Friction stripes 8 are arranged on the opposite sides of the two clamping blocks 701 and the outer side of the limiting block 601, so that friction force between the clamping blocks 701 and the limiting block 601 is increased, and the limiting block 601 is prevented from being separated from the clamping blocks 701.

The tab clamping mechanism 4 comprises a U-shaped clamping body 401, tab clamping blocks 402 and tab clamping rods 403, wherein the opening of the U-shaped clamping body 401 is downwards arranged, the two tab clamping blocks 402 are respectively and oppositely arranged on the inner sides of the U-shaped clamping body 401, the two tab clamping rods 403 are respectively arranged, one ends of the tab clamping rods 403 are connected with the tab clamping blocks 402, the other ends of the tab clamping rods penetrate through the side walls of the U-shaped clamping body 401 and are arranged on the outer sides of the U-shaped clamping body 401, and the rotation of the tab clamping rods 403 pushes the tab clamping blocks 402 to move so as to clamp the tabs.

Specifically, the tab clamping rod 403 is a threaded rod, a threaded through hole matched with the threaded rod is formed in the side wall of the 'U' -shaped clamping body 401, and the two tab clamping blocks 402 are close to or far away from each other due to rotation of the two tab clamping rods 403, so that clamping or separation of the tabs is achieved.

Finally, it should be noted that: the above embodiments are only for illustrating the technical solution of the present utility model, and not for limiting the same; although the utility model has been described in detail with reference to the foregoing embodiments, it will be understood by those of ordinary skill in the art that: the technical scheme described in the foregoing embodiments can be modified or some or all of the technical features thereof can be replaced by equivalents; such modifications and substitutions do not depart from the spirit of the utility model, and are intended to be included within the scope of the appended claims and description.

The foregoing description of the preferred embodiments of the utility model is not intended to be limiting, but rather is intended to cover all modifications, equivalents, alternatives, and improvements that fall within the spirit and scope of the utility model.

Claims

1. A tab welding tension testing device is characterized in that:

comprises a lug clamping mechanism (4), a copper bar (2) limiting mechanism and a clamping mechanism (3) which are sequentially arranged from top to bottom; the electrode lug clamping mechanism (4) is used for clamping the electrode lug, the clamping mechanism (3) clamps the copper bar (2) limiting mechanism, the copper bar (2) limiting mechanism is used for limiting and clamping the copper bar (2), the copper bar (2) is connected with the electrode lug in a welded mode, and the electrode lug clamping mechanism (4) applies vertical upward pulling force to the electrode lug;

the copper bar (2) limiting mechanism comprises two limiting blocks (601) and a clamping assembly, wherein the clamping assembly is used for clamping the copper bar (2) on the limiting blocks (601).

2. The test device of claim 1, wherein: two limiting blocks (601) are oppositely arranged, limiting protrusions are arranged at the upper ends of the limiting blocks (601), and the limiting protrusions on the two limiting blocks (601) are oppositely arranged.

3. The test device of claim 2, wherein: the clamping assembly comprises a supporting block (1), an elastic rod (602) and a clamping rod (603), wherein the supporting block (1) is arranged between two limiting blocks (601), one end of the elastic rod (602) is connected with the limiting blocks (601), the other end of the elastic rod is connected with the supporting block (1), the top end of the supporting block (1) is propped against the bottom of the copper bar (2), the clamping rod (603) is arranged on the limiting blocks (601) in a penetrating mode, one end of the clamping rod (603) faces towards the supporting block (1), the other end of the clamping rod is arranged on the outer side of the limiting blocks (601), and the limiting blocks (601) clamp the copper bar (2) when the clamping rod (603) rotates.

4. A test device according to claim 3, wherein: the clamping mechanism (3) comprises two clamping bodies (703) and clamping screws (704) which are oppositely arranged, threaded through holes are formed in the two clamping bodies (703), the clamping screws (704) are arranged in the threaded through holes in a penetrating mode on the two clamping bodies (703), and one ends of the clamping screws (704) are provided with rotary handles (702).

5. The test device of claim 4, wherein: the clamping mechanism (3) further comprises clamping blocks (701), one clamping block (701) is arranged on the upper portion of each clamping body (703), the two clamping blocks (701) are oppositely arranged, and one opposite side of each clamping block (701) is matched with the outer side of each limiting block (601) to be clamped.

6. The test device of claim 5, wherein: friction stripes (8) are arranged on one side of the two clamping blocks (701) opposite to each other and on the outer side of the limiting block (601).

7. The test device of claim 6, wherein: the utility model provides a pole ear fixture (4) is including "U" type clamping body (401), pole ear clamping block (402) and pole ear clamping rod (403), pole ear clamping block (402) are equipped with two, two pole ear clamping block (402) set up respectively relatively "U" type clamping body (401) inboard, pole ear clamping rod (403) one end with pole ear clamping block (402) are connected, and the other end passes "U" type clamping body (401), set up "U" type clamping body (401) outside, pole ear clamping rod (403) rotate the promotion pole ear clamping block (402) remove, thereby right the pole ear is pressed from both sides.