Battery welding tension detection device

Abstract

The utility model discloses a battery welding tension detection device, which comprises a test board provided with a placing groove for placing a battery cell tab, and further comprises a hold-down mechanism arranged on the test board on one side of the placing groove, a tension detection mechanism arranged on the test board on the other side of the placing groove, and a tension detection mechanism arranged on the test board on the other side of the placing groove, the clamping mechanism is arranged on the test board in a sliding mode, and a sliding groove used for sliding of the clamping mechanism is formed in the test board; according to the utility model, the pressing mechanism is arranged on the detection platform, and the clamping mechanism is matched with the tension tester, so that the rapid fixation of the soft connection of the welded battery cell lug plate and the cover plate can be realized, and the tension detection can be carried out on the welded part after the fixation; meanwhile, the flexible connection of the cover plate can be prevented from being damaged during detection.

Description

Technical Field

[0001] The utility model relates to the technical field of battery detection, in particular to a battery welding tension detection device. Background Art

[0002] During the battery production process, after the battery ear plate and the cover plate soft connection are welded, the tightness of the welding needs to be tested by tensile force to ensure that the welding strength meets the requirements and to prevent the welding from being unstable, resulting in disconnection due to short service time.

[0003] However, since the battery ear plate and the cover plate flexible connection are heterogeneous parts, and the cover plate flexible connection is made of thin copper foil, it is easy to break. Therefore, it is extremely inconvenient to detect. Therefore, we specially designed a tensile testing device for this purpose.

[0004] The above contents are only used to assist in understanding the technical solution of the present utility model, and do not constitute an admission that the above contents are the closest prior art. Utility Model Content

[0005] The utility model aims to provide a battery welding tension detection device to solve the problem raised in the above background technology that the battery ear plate and the cover plate flexible connection are heterogeneous parts, and the cover plate flexible connection is made of thin copper foil and is easy to break.

[0006] To achieve the above-mentioned purpose, the utility model provides the following technical solutions: a battery welding tension detection device, comprising a test bench, the test bench is provided with a placement slot for placing a battery cell tab, and further comprising:

[0007] A pressing mechanism is arranged on the test bench at one side of the placement slot and is used to press and hold the battery cell tab placed in the placement slot;

[0008] A clamping mechanism is slidably disposed on the test bench and is used to clamp and fix the cover plate soft connection welded on the battery cell pole ear, and the test bench is provided with a slide groove for the sliding of the clamping mechanism;

[0009] The tensile tester is connected to the clamping mechanism and is used to perform tensile testing on the flexible connection between the battery cell tab and the cover plate after welding.

[0010] Preferably, the pressing mechanism comprises:

[0011] A pressing frame, fixedly arranged on the test bench;

[0012] A holding plate is arranged above the placement groove and is slidably connected to the holding frame through a slider, and is used to hold the cell tab and the connection between the cell tab and the cover plate;

[0013] The power unit is arranged on one side of the test bench and is used to drive the slider to move up and down on the holding frame.

[0014] Preferably, the power unit comprises:

[0015] Two sets of first connecting rods are rotatably arranged on both sides of the slider;

[0016] Two sets of second connecting rods are rotatably arranged on the holding frame just above the rotating connection of the first connecting rod;

[0017] A first connecting shaft is disposed at the ends of the first connecting rod and the second connecting rod and is rotatably disposed with the first connecting rod and the second connecting rod;

[0018] A first adjusting rod, one end of which is sleeved on the first connecting shaft, and the other end of which is sleeved on the second connecting shaft;

[0019] A second adjusting rod, one end of which is sleeved and rotatably mounted on the second connecting shaft, and the other end of which is rotatably mounted on the pressing frame;

[0020] The sliding elastic member is arranged on the pressing frame and is used for providing a restoring elastic force to the second connecting shaft.

[0021] Preferably, the sliding elastic member comprises:

[0022] An arc-shaped slide rail is fixedly arranged on the holding frame and is used for the second connecting shaft to slide thereon;

[0023] An arc-shaped return spring has one end fixing the end of the arc-shaped slide rail and the other end abutting against the second connecting shaft.

[0024] Preferably, the clamping mechanism comprises:

[0025] A lower clamping plate is slidably arranged on the slide groove, and a lower clamping block is arranged at one end of the lower clamping plate close to the placement groove;

[0026] The upper clamping plate has one end which is rotatably arranged with the lower clamping plate, and the other end which is clamped with the lower clamping plate. An upper clamping block is arranged at one end of the upper clamping plate close to the placement groove.

[0027] Preferably, a threaded column is provided at the rotating end of the upper clamping plate for threaded connection with the tensile tester.

[0028] Compared with the prior art, the beneficial effects of the utility model are:

[0029] The utility model can realize rapid fixation of welded battery core ear plates and cover plate soft connections by arranging a pressing mechanism and a clamping mechanism on the testing table in conjunction with a tension tester, and can perform tension testing on the welding positions after fixation, while preventing the cover plate soft connection from being damaged during testing. BRIEF DESCRIPTION OF THE DRAWINGS

[0030] Figure 1 It is a schematic diagram of the overall structure of the utility model;

[0031] Figure 2 This is a schematic diagram of the overall structure of the utility model from another angle;

[0032] Figure 3 This is a front cross-sectional view of the power unit of the utility model;

[0033] Figure 4 This is a top view of the test bench of the utility model;

[0034] Figure 5 This is the overall structural diagram of the clamping mechanism of the utility model.

[0035] Figure markings: 1-test bench; 2-battery cell ear; 3-placing groove; 4-pressing mechanism; 41-pressing frame; 42-pressing plate; 43-slider; 44-power unit; 441-first connecting rod; 442-second connecting rod; 443-first connecting shaft; 444-first adjusting rod; 445-second connecting shaft; 446-second adjusting rod; 447-arc slide rail; 448-arc return spring; 5-clamping mechanism; 51-lower clamping plate; 52-upper clamping plate; 521-threaded column; 6-cover plate soft connection; 7-tensile tester. DETAILED DESCRIPTION

[0036] 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.

[0037] See also Figure 1-5 The utility model provides a technical solution: a battery welding tension detection device, comprising a test bench 1, the test bench 1 is provided with a placement slot 3 for placing a battery cell tab 2, and also includes:

[0038] A pressing mechanism 4 is provided on the test bench 1 at one side of the placement slot 3 and is used to press and hold the battery cell tab 2 placed in the placement slot 3;

[0039] The clamping mechanism 5 is slidably disposed on the test bench 1 and is used to clamp and fix the cover plate soft connection 6 welded on the battery cell tab 2. The test bench 1 is provided with a slide groove for the clamping mechanism 5 to slide;

[0040] The tension tester 7 is connected to the clamping mechanism 5 and is used to perform a tension test on the battery cell tab 2 and the cover plate soft connection 6 after welding.

[0041] In addition, the pressing mechanism 4 comprises:

[0042] A holding frame 41 is fixedly arranged on the test bench 1;

[0043] A holding plate 42 is disposed above the placement groove 3 and is slidably connected to the holding frame 41 through a slider 43, and is used to hold the cell tab 2 and the connection between the cell tab 2 and the cover plate soft connection 6;

[0044] The power unit 44 is disposed on one side of the test bench 1 and is used to drive the slider 43 to move up and down on the pressing frame 41 to achieve the pressing effect and to remove the battery cell tab 2 from the placement slot 3 after the test.

[0045] Wherein, the power unit 44 includes:

[0046] Two sets of first connecting rods 441 are rotatably arranged on both sides of the slider 43;

[0047] Two sets of second connecting rods 442 are rotatably arranged on the holding frame 41 just above the rotatable connection of the first connecting rod 441;

[0048] The first connecting shaft 443 is disposed at the ends of the first connecting rod 441 and the second connecting rod 442, and is rotatably disposed with the first connecting rod 441 and the second connecting rod 442;

[0049] A first adjusting rod 444, one end of which is sleeved on the first connecting shaft 443 to realize rotation with the first connecting shaft 443, and the other end of which is sleeved with a second connecting shaft 445;

[0050] A second adjusting rod 446, one end of which is sleeved and rotatably mounted on the second connecting shaft 445, and the other end of which is rotatably mounted on the pressing frame 41;

[0051] A sliding elastic member, disposed on the holding frame 41, for providing a restoring elastic force to the second connecting shaft 445;

[0052] When the battery cell tab 2 needs to be placed in the placement groove 3, the second connecting shaft 445 is pushed to rotate along the second adjusting rod 446 as the rotation axis, thereby driving the first adjusting rod 444 to move, so that the first connecting rod 441 and the second connecting rod 442 are changed from a vertical state to an inclined state, thereby driving the slider 43 to slide upward along the holding frame 41, so that the placement groove 3 is leaked, and the welded battery cell tab 2 can be placed therein, and then the second connecting shaft 445 is released. Under the action of the sliding elastic member and gravity, the slider 43 will slide downward to the holding plate 42 to hold the battery cell tab 2 on the placement groove 3. The action of the sliding elastic member can provide the holding plate 42 with an elastic holding force in addition to gravity, thereby making the holding more stable.

[0053] Wherein, the sliding elastic member comprises:

[0054] The arc-shaped slide rail 447 is fixedly disposed on the pressing frame 41 and is used for the second connecting shaft 445 to slide thereon;

[0055] The arc-shaped return spring 448 has one end fixed to the end of the arc-shaped slide rail 447 and the other end abuts against the second connecting shaft 445 .

[0056] In addition, the clamping mechanism 5 comprises:

[0057] A lower clamping plate 51 is slidably arranged on the slide groove, and a lower clamping block is arranged at one end of the lower clamping plate 51 close to the placement groove 3, and the lower clamping block is made of soft colloid material;

[0058] The upper clamping plate 52 is rotatably arranged with the lower clamping plate 51 at one end, and is clamped with the lower clamping plate 51 at the other end. An upper clamping block is arranged at one end of the upper clamping plate 52 close to the placement groove 3. The upper clamping block is made of soft gelatin material. Through the material setting of the upper clamping block and the lower clamping block, the cover plate soft connection 6 can be prevented from being torn off during the pulling process when it is clamped.

[0059] Finally, a threaded column 521 is provided at the rotating end of the upper clamping plate 52 for threaded connection with the tensile tester 7 .

[0060] After the battery cell tab 2 is pressed and clamped by the pressing mechanism 4, the cover plate flexible connector 6 is placed on the lower clamp 51, and then the upper clamp 52 is rotated to clamp on the lower clamp 51, and the tensile tester 7 is threadedly connected through the threaded column 521, and then the tensile tester 7 can be pulled to perform a tensile test on the battery cell tab 2 and the cover plate flexible connector 6 after welding.

[0061] It should be noted that, in this article, relational terms such as first and second, etc. are only used to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Moreover, the terms "include", "comprise" or any other variants thereof are intended to cover non-exclusive inclusion, so that a process, method, article or device including a series of elements includes not only those elements, but also other elements not explicitly listed, or also includes elements inherent to such process, method, article or device.

[0062] Although the 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 welding tension detection device, comprising a test bench (1), characterized in that: The test bench (1) is provided with a placement slot (3) for placing the battery cell tab (2), and further comprises: A pressing mechanism (4) is arranged on the test bench (1) at one side of the placement groove (3) and is used to press and hold the battery cell tab (2) placed in the placement groove (3); A clamping mechanism (5) is slidably disposed on the test bench (1) and is used to clamp and fix the cover plate soft connection (6) welded to the battery cell pole ear (2), and a slide groove for the clamping mechanism (5) to slide is provided on the test bench (1); A tension tester (7) is connected to the clamping mechanism (5) and is used to perform a tension test on the battery cell tab (2) and the cover plate soft connection (6) after welding.

2. A battery welding tension detection device according to claim 1, characterized in that: The pressing mechanism (4) comprises: A holding frame (41) is fixedly mounted on the test bench (1); A holding plate (42) is arranged above the placement groove (3) and is slidably connected to the holding frame (41) through a slider (43), and is used to hold the battery cell tab (2) and the connection between the battery cell tab (2) and the cover plate soft connection (6); The power unit (44) is arranged on one side of the test bench (1) and is used to drive the slide block (43) to move up and down on the holding frame (41).

3. A battery welding tension detection device according to claim 2, characterized in that: The power unit (44) comprises: Two sets of first connecting rods (441) are rotatably arranged on both sides of the slider (43); Two sets of second connecting rods (442) are rotatably arranged on the holding frame (41) just above the rotatable connection point of the first connecting rod (441); A first connecting shaft (443) is disposed at the ends of the first connecting rod (441) and the second connecting rod (442), and is rotatably disposed with the first connecting rod (441) and the second connecting rod (442); A first adjusting rod (444), one end of which is sleeved on the first connecting shaft (443), and the other end of which is sleeved on the second connecting shaft (445); A second adjusting rod (446), one end of which is sleeved and rotatably mounted on the second connecting shaft (445), and the other end of which is rotatably mounted on the pressing frame (41); The sliding elastic member is arranged on the holding frame (41) and is used to provide a restoring elastic force to the second connecting shaft (445).

4. A battery welding tension detection device according to claim 3, characterized in that: The sliding elastic member comprises: An arc-shaped slide rail (447) is fixedly arranged on the holding frame (41) and is used for the second connecting shaft (445) to slide thereon; An arc-shaped return spring (448) has one end fixed to the end of the arc-shaped slide rail (447) and the other end abutting against the second connecting shaft (445).

5. A battery welding tension detection device according to claim 1, characterized in that: The clamping mechanism (5) comprises: A lower clamping plate (51) is slidably arranged on the slide groove, and a lower clamping block is arranged at one end of the lower clamping plate (51) close to the placement groove (3); The upper clamping plate (52) has one end rotatably arranged with the lower clamping plate (51) and the other end clamped with the lower clamping plate (51). An upper clamping block is arranged at one end of the upper clamping plate (52) close to the placement groove (3).

6. A battery welding tension detection device according to claim 5, characterized in that: The rotating end of the upper clamping plate (52) is provided with a threaded column (521) for threaded connection with the tension tester (7).

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