Battery cell tab roll-leveling assembly of soft package battery

Abstract

The utility model relates to the technical field of soft package battery processing, in particular to a battery cell tab roll flattening assembly of a soft package battery, which is provided with a vertical telescopic frame and a displacement truss for driving the vertical telescopic frame, the vertical telescopic frame is driven by a second truss included in the displacement truss, and the second truss can drive the vertical telescopic frame to move transversely so as to drive the rolling wheels to abut against the bent tabs; a connecting frame is arranged at the telescopic end of the vertical telescopic frame, and a rolling wheel is arranged on the connecting frame so as to drive the rolling wheel to roll and bend the bent tab circularly. The problem that in the prior art, a soft package battery tab deforms after being bent, and then the subsequent welding machining quality of the tab is affected is solved.

Description

Technical Field

[0001] The utility model relates to the technical field of soft-pack battery processing, and particularly relates to a core ear rolling and flattening assembly for a soft-pack battery. Background Technique

[0002] At present, after the ear of the soft-pack battery completes the bending operation, the shape is generally uneven. This uneven phenomenon is manifested as morphological defects such as wrinkles, twists or local protrusions on the surface of the ear. The causes include both inconsistent plastic deformation due to uneven force during the bending process and the situation of a certain degree of springback due to internal attraction after the ear is bent.

[0003] The unevenness of the ear surface will directly lead to a reduction in the effective contact area of the welding contact surface and uneven distribution. During the welding process, this uneven contact state will cause abnormal local resistance, resulting in uneven distribution of welding heat input, and further leading to defects such as false soldering, welding through or solder accumulation at the solder joints. Content of the Utility Model

[0004] The purpose of the utility model is to solve the problem that the deformation of the ear of the soft-pack battery exists after bending in the prior art, which further affects the welding processing quality of the ear, and provides a core ear rolling and flattening assembly for a soft-pack battery.

[0005] In order to solve the above technical problems, the utility model adopts the following technical scheme: a core ear rolling and flattening assembly for a soft-pack battery, which has a vertical telescopic frame and a displacement frame for driving the vertical telescopic frame;

[0006] The vertical telescopic frame is driven by a second frame included in the displacement frame. The second frame can drive the vertical telescopic frame to move horizontally to drive the roller to press against the bent ear.

[0007] A connecting frame is arranged at the telescopic end of the vertical telescopic frame, and a roller is arranged on the connecting frame to drive the roller to cyclically roll and flatten the bent ear.

[0008] As a further optimization of the core ear rolling and flattening assembly for a soft-pack battery of the utility model: the connecting frame and the roller are connected together through a pressing assembly to elastically connect the connecting frame and the roller.

[0009] As a further optimization of the core ear rolling and flattening assembly for a soft-pack battery of the utility model: the pressing assembly includes a fixed seat arranged on the connecting frame and a push plate fixedly connected to the roller. An auxiliary spring is arranged between the push plate and the connecting frame. Slide rails and sliders are respectively arranged on the opposite surfaces of the push plate and the fixed seat, and the slide rails and the sliders are in sliding fit.

[0010] As a further optimization of the core tab rolling and flattening assembly of a soft-pack battery of the present utility model: Stable grooves are provided on both the upper and lower sides of the fixed seat in the vertical direction, and stable blocks provided on the push plate are slidably arranged in the two stable grooves.

[0011] As a further optimization of the core tab rolling and flattening assembly of a soft-pack battery of the present utility model: Two auxiliary springs are provided to maintain the top pressure of the push plate driving the roller to press the tab.

[0012] As a further optimization of the core tab rolling and flattening assembly of a soft-pack battery of the present utility model: Two roller wheels are provided to enable the two roller wheels to cover the vertical distance of the bent surface of the tab after bending.

[0013] As a further optimization of the core tab rolling and flattening assembly of a soft-pack battery of the present utility model: The width of the roller wheel is greater than the width of the bent surface of the tab after bending.

[0014] As a further optimization of the core tab rolling and flattening assembly of a soft-pack battery of the present utility model: The second row frame is connected to the first row frame, and the first row frame can drive the second row frame to longitudinally displace, so that the roller wheels sequentially roll the multiple tabs on one side of the battery body.

[0015] Compared with the prior art, the present utility model has the following beneficial effects:

[0016] By arranging a displacement row frame, driving the vertical telescopic frame to displace, and then driving the connecting frame and the roller wheel connected to the vertical telescopic frame to approach the bent tab. This device can continuously approach, enabling the roller wheel to press and flatten the bent tab, thereby effectively strengthening it. In addition, the vertical telescopic frame can also drive the roller wheel to vertically displace, realizing multiple rolling and flattening reinforcements of the bent tab. This process not only releases the internal stress in the bent tab to a certain extent but also significantly reduces the impact of internal stress or unevenness on the subsequent processing quality. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1 is a schematic structural diagram of the use state of the present utility model;

[0018] Figure 2 is a front view structural diagram of the present utility model;

[0019] Figure 3 is an enlarged structural diagram at A of the present utility model;

[0020] Markings in the figure: 1, displacement truss; 101, first truss; 102, second truss; 2, vertical telescopic truss; 3, connecting truss; 4, top pressing assembly; 401, fixed seat; 402, auxiliary spring; 403, stabilizing block; 404, push plate; 405, slide rail; 406, slider; 407, stabilizing groove; 5, rolling wheel; 6, clamping tray; 7, battery body; 701, tab. Detailed implementation mode

[0021] To better understand the present utility model, the content of the present utility model will be further clarified below in conjunction with embodiments, but the content of the present utility model is not limited to the following embodiments.

[0022] As Figure 1 and Figure 2 shown, a tab rolling and flattening assembly for a soft-pack battery cell has a displacement truss 1. The displacement truss 1 is connected with a vertical telescopic truss 2. The telescopic end of the vertical telescopic truss 2 is fixedly connected with a connecting truss 3. A rolling wheel 5 is arranged on one side of the connecting truss 3. The displacement truss 1 can perform displacements in the horizontal and vertical directions, that is, it can drive the rolling wheel to fit the tab 701 of the battery body 7 after being bent. On the basis that the battery body 7 is clamped by the clamping tray 6, the bent tab 701 is top-pressed to reinforce the bending degree of the tab 701. At the same time, the vertical telescopic truss 2 can drive the rolling wheel to roll vertically on the surface of the bent tab 701. Subsequently, the internal stress generated inside the tab 701 during the bending process of the tab 701 can be further eliminated to a certain extent, that is, the bending degree of the tab 701 can be maintained to a certain extent, thereby reducing the probability of the tab 701 loosening during movement.

[0023] The displacement truss 1 includes a first truss 101 and a second truss 102. The vertical telescopic truss 2 is arranged on the second truss 102. The cooperation of the first truss 101 and the second truss 102 can drive the rolling wheel 5 connected by the connecting truss 3 through the vertical telescopic truss 2 to perform horizontal and vertical displacements. Subsequently, on the basis that the battery body 7 is clamped by the clamping tray 6, the bent tab 701 can be top-pressed to reinforce the bending degree of the tab 701. There are two displacement trusses 1 and rolling wheels 5, and the two displacement trusses 1 and rolling wheels 5 are symmetrically arranged. Thus, a space for placing the battery body 7 is formed between the two first trusses 101, so as to quickly roll-press both sides of the battery body 7 provided with tabs 701 to achieve the reinforcement and leveling of the bending degree of the tabs 701.

[0024] The connecting frame 3 is connected to the rolling wheel 5 through the pressing assembly 4. The pressing assembly 4 includes a fixed seat 401 fixedly arranged on the connecting frame 3 and a push plate 404 connected to the rolling wheel 5. A slide rail 405 is fixedly arranged on one side of the fixed seat 401 facing the push plate 404, and a slide block 406 is fixedly arranged on the push plate 404 provided with the slide rail 405, so as to facilitate the mutual sliding of the fixed seat 401 and the push plate 404. And an auxiliary spring 402 is arranged between the push plate 404 and the connecting frame 3. Specifically, two auxiliary springs 402 are provided to provide sufficient thrust for the push plate 404 and the rolling wheel 5. Then, when the rolling wheel 5 presses the tab 701 to level and reinforce the bending state of the tab 701, the pressing force of the rolling wheel 5 can be reduced to a certain extent. Subsequently, it can adapt to the micro errors during the movement of the displacement frame 1, so as to adapt to the situation where the movement amount of the second frame 102 is too much. At the same time, it can also change the hard rolling into soft rolling and flattening to a certain extent, thereby reducing the probability of the tab 701 breaking due to hard pressing to a certain extent.

[0025] The first frame 101 can drive the second frame 102 to displace, and then can drive the vertical telescopic frame 2, the fixed plate, the auxiliary plate and the rolling wheel 5 to displace, so as to correspond to the tabs 701 at different positions of the battery body 7. The second frame 102 can drive the vertical telescopic frame 2 close to the position of the tab 701. Then, the rolling wheel 5 can be pressed against the bent tab 701 through the fixed plate and the auxiliary plate. Then, the state of the bent tab 701 can be further reinforced, and at the same time, the bent surface of the tab 701 can be further made flat. The fixed plate and the auxiliary plate are in sliding fit, and an auxiliary spring 402 is arranged between the end surface of the movable end of the auxiliary plate and the vertical telescopic frame 2 to adapt to the situation where the movement amount of the second frame 102 is too much. At the same time, it can also change the hard rolling into soft rolling and flattening to a certain extent, thereby reducing the probability of the tab 701 breaking due to hard pressing to a certain extent. Stable grooves 407 are formed on both the upper and lower side surfaces in the vertical direction of the fixed seat 401. A stabilizing block 403 arranged on the push plate 404 slides in the stable grooves 407. The stabilizing block 403 is connected to the push plate 404 by bolts to reinforce the stability of the slide rail 405 and the slide block 406 supporting the sliding of the push plate 404, and then maintain the stability of the push plate 404 cooperating with the rolling wheel 5 to press the tab 701. Two rolling wheels 5 are provided. The widths and vertical spacings of the two rolling wheels 5 can cover the pressing of the tab 701. Then, the movement amount of the vertical movement of the vertical telescopic frame 2 can be reduced, and the efficiency of the rolling wheel 5 in reinforcing and leveling the bending degree of the tab 701 is improved to a certain extent.

[0026] Both the first row frame 101 and the second row frame 102 are screw-nut pair structures driven by a forward and reverse stepper motor. The first row frame 101 is arranged along the transmission direction of the transmission component, and the second row frame 102 is arranged along the directions on both sides of the tab 701 provided on the battery body 7. Specifically, the specific models, operating modes, and control modes of the first row frame 101, the second row frame 102, and the vertical telescopic frame 2 should all be understood as common knowledge of those skilled in the art.

[0027] The specific embodiments of the present invention have been described above. It should be understood that the present invention is not limited to the above specific embodiments, and those skilled in the art can make various deformations or modifications within the scope of the claims, which do not affect the essence of the present invention.

Claims

1. A flat-rolling assembly for the tab of a soft-pack battery cell, characterized in that: It has a vertical telescopic frame (2) and a displacement frame (1) for driving the vertical telescopic frame (2); The vertical telescopic frame (2) is driven by a second frame (102) included in the displacement frame (1). The second frame (102) can drive the vertical telescopic frame (2) to move horizontally to drive the roller (5) to press against the bent tab (701); A connecting frame (3) is provided at the telescopic end of the vertical telescopic frame (2), and a roller (5) is provided on the connecting frame (3) to drive the roller (5) to cyclically roll-press the bent tab (701).

2. The flat-rolling assembly for the tab of the core of a soft-pack battery according to claim 1, wherein: The connecting frame (3) and the roller (5) are connected together through a pressing assembly (4) to elastically connect the connecting frame (3) and the roller (5).

3. The flat-rolling assembly for the tab of the core of a soft-pack battery according to claim 2, characterized in that: The pressing assembly (4) includes a fixed seat (401) provided on the connecting frame (3) and a push plate (404) fixedly connected to the roller (5). An auxiliary spring (402) is provided between the push plate (404) and the connecting frame (3). Sliding rails (405) and sliders (406) are respectively provided on the opposite surfaces of the push plate (404) and the fixed seat (401), and the sliding rails (405) and the sliders (406) are in sliding fit.

4. The flat rolling assembly for the tab of the core of a soft-pack battery according to claim 3, wherein: Stable grooves (407) are formed on the upper and lower sides of the fixed seat (401) in the vertical direction, and stable blocks (403) provided on the push plate (404) are slidably arranged in the two stable grooves (407).

5. The flat-rolling assembly for the tab of the core of a soft-pack battery according to claim 3, wherein: Two auxiliary springs (402) are provided to maintain the pressing force of the push plate (404) driving the roller (5) to press against the tab (701).

6. The flat rolling assembly for the tab of the core of a soft-pack battery according to claim 1, wherein: Two rollers (5) are provided to enable the two rollers (5) to cover the vertical distance of the bent surface of the bent tab (701).

7. The flat-rolling assembly for the tab of the core of a soft-pack battery according to claim 1, wherein: The width of the roller (5) is greater than the width of the bent surface of the bent tab (701).

8. The flat rolling assembly for the tab of the core of a soft-pack battery according to claim 1, wherein: The second frame (102) is connected to a first frame (101). The first frame (101) can drive the second frame (102) to longitudinally displace so that the roller (5) sequentially rolls and presses a plurality of tabs (701) on one side of the battery body (7).

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