Battery cell tab bending device and battery cell bending machine

Abstract

The utility model belongs to the technical field of battery processing, and particularly relates to a bending device for a battery cell tab and a battery cell bending machine. The bending device for the battery cell tab comprises a rack, a driving mechanism and a clamping mechanism, the driving mechanism is connected to the rack; the clamping mechanism comprises a clamping pushing part, a first clamping block and a second clamping block; the clamping and pushing part is movably connected to the driving mechanism; the first clamping block and the second clamping block are both connected to a clamping and pushing part; a clamping gap is formed between the first clamping block and the second clamping block; a separation structure is arranged on the first clamping block and / or the second clamping block; and the separation structure is arranged in the clamping gap. The electrode lug bending device can improve the bending operation efficiency and guarantee the bending quality of the electrode lug.

Description

Technical Field

[0001] The utility model belongs to the technical field of battery processing, and in particular relates to a bending device for a battery cell tab and a battery cell bending machine. Background Art

[0002] During the battery cell processing, the tabs of the battery cells need to be bent. Generally, bending the tabs is achieved in the following two ways: 1. Manual bending; 2. Placing the battery cells on a jig and then manually bending them.

[0003] However, both methods have disadvantages: when folding the tabs of the battery cell, the tabs are pressed from top to bottom. Since the tabs are located on the arc surface of the battery cell, the distance between the middle of the tabs and the target plane is longer than the two sides. After pressing the tabs, the tabs will deflect inward and form a bad angle, resulting in poor bending quality of the tabs, which requires continuous rework and repair, and thus the operating efficiency is too low. Utility Model Content

[0004] The purpose of the utility model is to provide a bending device for a battery cell tab in view of the deficiencies in the prior art, which can solve the technical problems of low yield rate and low operating efficiency of the tab.

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

[0006] A bending device for a battery cell tab comprises a frame, a driving mechanism and a clamping mechanism; the driving mechanism is connected to the frame; the clamping mechanism comprises a clamping and pushing component, a first clamping block and a second clamping block; the clamping and pushing component is movably connected to the driving mechanism; and the first clamping block and the second clamping block are both connected to the clamping and pushing component; and a clamping gap is provided between the first clamping block and the second clamping block; a partition structure is provided on the first clamping block and / or the second clamping block; and the partition structure is arranged in the clamping gap.

[0007] Preferably: the clamping component formed by the clamping and pushing component, the first clamping block and the second clamping block is a clamping claw cylinder;

[0008] Or the clamping and pushing component includes a clamping and pushing motor, a rotating screw, a first slider and a second slider; the clamping and pushing motor is connected to the driving mechanism and is drivingly connected to one end of the rotating screw; the other end of the rotating screw is movably connected to the driving mechanism; and the outer surface of the rotating screw is provided with a first thread surface and a second thread surface with opposite thread directions; the first slider is slidably connected to the first thread surface; the second slider is slidably connected to the second thread surface; and the first slider is fixedly connected to the first clamping block; the second slider is fixedly connected to the second clamping block.

[0009] Preferably, the separation structure is a convex block, one end of the convex block is connected to the first clamping block; the other end of the convex block is arranged to protrude from the first clamping block toward the second clamping block.

[0010] Preferably: a limiting channel corresponding to the protrusion is provided in the second clamping block.

[0011] Preferably: the length of the protrusion close to the first clamping block is greater than the length of the protrusion close to the second clamping block;

[0012] And / or the width of the protrusion close to the first clamping block is greater than the width of the protrusion close to the second clamping block.

[0013] Preferably: the driving mechanism includes a displacement driving component and a bending pushing component; the displacement driving component is connected to the frame; and the displacement driving component is drivingly connected to the bending pushing component so that the bending pushing component moves along the plane direction where the XY axis is located; the movable end of the bending pushing component is drivingly connected to the clamping pushing component so that the clamping pushing component moves along the plane direction where the XZ axis is located or the plane direction where the YZ axis is located.

[0014] Preferably: the displacement drive assembly further includes a first scale component and a first mounting plate; one end of the first scale component is connected to the first mounting plate; and the other end of the first scale component is disposed on the frame.

[0015] Preferably: the bending pushing component comprises a bending driving component and a second connecting bracket drivingly connected to the bending driving component; the bending driving component is connected to the displacement driving component; and the clamping pushing component is connected to the second connecting bracket.

[0016] Preferably: a support plate is further provided on the frame; the bending pushing assembly further comprises a second scale component; one end of the second scale component is connected to the second connecting bracket; and the other end of the second scale component is arranged on the support plate.

[0017] The utility model also discloses a battery cell bending machine, comprising the bending device for the battery cell ear described above; and the battery cell bending machine also comprises a battery cell jig, on which a positioning groove is provided; the positioning groove is arranged below the clamping mechanism; and the positioning groove is used to install the battery cell body.

[0018] The beneficial effect of the utility model is that the technical solution realizes the clamping and positioning of the positive and negative pole ears in the same direction through the first clamp block and the second clamp block, which can avoid excessive shaking and other phenomena during the bending process of the positive and negative pole ears, thereby improving the stability of the assembly and facilitating the improvement of the quality and efficiency of the bending; at the same time, the positive and negative pole ears are separated by a separation structure, and then the first clamp block and the second clamp block are used to clamp and bend the two pole ears, thereby avoiding the pole ears from offsetting toward each other, and also avoiding the positive and negative pole ears from tilting in the non-bending direction; thereby improving the efficiency of the bending operation and ensuring the bending quality of the pole ears. In addition, through the motion performance of the driving mechanism, the input of labor can be reduced, thereby reducing the cost of the production process and improving the operating efficiency. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] The following will refer to the attached Figures 1 to 7 To describe the features, advantages and technical effects of exemplary embodiments of the present utility model.

[0020] Figure 1 It is a structural schematic diagram of a bending device for a battery cell tab according to an embodiment of the utility model;

[0021] Figure 2 It is a structural schematic diagram of a bending device for a battery cell tab according to an embodiment of the utility model;

[0022] Figure 3 It is a side view of a bending device for a battery cell tab according to an embodiment of the utility model;

[0023] Figure 4 It is a partial enlarged view of a bending device for a battery cell tab according to an embodiment of the utility model;

[0024] Figure 5 It is a partial structural schematic diagram of a bending device for a battery cell tab according to an embodiment of the utility model;

[0025] Figure 6 It is a structural schematic diagram of another implementation manner of the clamping and pushing component of the bending device for the battery cell tab of one embodiment of the utility model.

[0026] Figure 7 The present invention is a schematic structural diagram of a battery cell jig of a battery cell bending machine according to an embodiment of the present invention.

[0027] In the figure: 1-frame; 11-mounting block; 12-first scale component; 13-positioning column; 2-displacement drive assembly; 21-displacement drive cylinder; 22-first mounting plate; 23-first connecting bracket; 3-bending push assembly; 31-bending drive component; 32-second connecting bracket; 321-first connecting plate; 322-second connecting plate; 33-support plate; 34-second scale component; 4-clamping mechanism; 401-partitioning structure; 40-clamping gap; 41-clamping push component; 411-clamping and pushing motor; 412-rotating screw; 4121-first threaded surface; 4122-second threaded surface; 413-first slider; 414-second slider; 42-first clamping block; 421-bump; 43-second clamping block; 431-limiting channel; 5-battery cell fixture; 51-positioning groove; 6-battery cell body; 61-ear; X-horizontal direction of spatial plane; Y-longitudinal direction of spatial plane; Z-vertical direction of spatial plane; α-installation tilt angle; 7-driving mechanism. DETAILED DESCRIPTION

[0028] Unless otherwise defined, all technical and scientific terms used herein have the same meaning as commonly understood by technicians in the technical field to which this application belongs; the terms used herein are only for the purpose of describing specific embodiments and are not intended to limit this application; the terms "including" and "having" in the specification and claims of this application and the above-mentioned figure descriptions and any variations thereof are intended to cover non-exclusive inclusions.

[0029] In the description of the embodiments of the present application, the technical terms "first", "second", etc. are only used to distinguish different objects, and cannot be understood as indicating or implying relative importance or implicitly indicating the number, specific order or primary and secondary relationship of the indicated technical features. In the description of the embodiments of the present application, the meaning of "multiple" is more than two, unless otherwise clearly and specifically defined.

[0030] Reference to "embodiments" herein means that a particular feature, structure, or characteristic described in conjunction with the embodiments may be included in at least one embodiment of the present application. The appearance of the phrase in various locations in the specification does not necessarily refer to the same embodiment, nor is it an independent or alternative embodiment that is mutually exclusive with other embodiments. It is explicitly and implicitly understood by those skilled in the art that the embodiments described herein may be combined with other embodiments.

[0031] In the description of the embodiments of the present application, the term "and / or" is only a description of the association relationship of the associated objects, indicating that there may be three relationships. For example, A and / or B can mean: A exists alone, A and B exist at the same time, and multiple situations exist alone. In addition, the character " / " in this article generally indicates that the associated objects before and after are in an "or" relationship.

[0032] In the description of the embodiments of the present application, unless otherwise clearly specified and limited, technical terms such as "installed", "connected", "connected", "fixed" and the like should be understood in a broad sense. For example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection or an indirect connection through an intermediate medium, and it can be the internal connection of two elements or the interaction relationship between two elements. For those of ordinary skill in the art, the specific meanings of the above terms in the embodiments of the present application can be understood according to the specific circumstances.

[0033] The following is combined with Figure 1 to Figure 7 The utility model is further described in detail, but it is not intended to limit the utility model.

[0034] like Figure 1 As shown, in one embodiment of the utility model, the bending device of the battery cell pole ear comprises a frame 1, a driving mechanism 7 and a clamping mechanism 4; the driving mechanism 7 is connected to the frame 1; the clamping mechanism 4 comprises a clamping and pushing component 41, a first clamping block 42 and a second clamping block 43; the clamping and pushing component 41 is movably connected to the driving mechanism 7; the first clamping block 42 and the second clamping block 43 are arranged side by side, and are both connected to the clamping and pushing component 41; and a clamping gap 40 is provided between the first clamping block 42 and the second clamping block 43; the clamping gap 40 is used to clamp the two pole ears 61 of the battery cell body 6; a partition structure 401 is provided on the first clamping block 42 and / or the second clamping block 43; the partition structure 401 is arranged in the clamping gap 40; the partition structure 401 is used to separate the two pole ears 61.

[0035] The technical solution of the utility model realizes the clamping and positioning of the positive and negative pole ears in the same direction through the first clamping block and the second clamping block, which can avoid excessive shaking and other phenomena during the bending process of the positive and negative pole ears, thereby improving the stability of the assembly and facilitating the improvement of the quality and efficiency of the bending; at the same time, the positive and negative pole ears are separated by a separation structure, and then the two pole ears are clamped and bent by the first clamping block and the second clamping block, thereby avoiding the pole ears from offsetting towards each other, and also avoiding the positive and negative pole ears from tilting in the non-bending direction; thereby improving the efficiency of the bending operation and ensuring the bending quality of the pole ears. In addition, through the motion performance of the driving mechanism, the input of labor can be reduced, thereby reducing the cost of the production process and improving the operating efficiency.

[0036] Specifically, in some embodiments, Figure 1 and 2As shown, the clamping component formed by the clamping and pushing component 41, the first clamping block 42 and the second clamping block 43 is a clamping cylinder. This structure enables the upper and lower first clamping blocks 42 and the second clamping blocks 43 to clamp and bend the pole lug 61 and separate and discharge the material under the driving action of the clamping cylinder, thereby improving the convenience of operation; and the first clamping block 42 and the second clamping block 43 can move toward or in the opposite direction through a power source, thereby effectively reducing the investment in components and reducing production costs. In other embodiments, such as Figure 1 and 6 As shown, the clamping and pushing component 41 includes a clamping and pushing motor 411, a rotating screw 412, a first slider 413 and a second slider 414; the clamping and pushing motor 411 is connected to the driving mechanism 7 and is drivingly connected to one end of the rotating screw 412; the other end of the rotating screw 412 is movably connected to the driving mechanism 7; and the outer surface of the rotating screw 412 is provided with a first thread surface 4121 and a second thread surface 4122 with opposite thread directions; the first slider 413 is slidably connected to the first thread surface 4121; the second slider 414 is slidably connected to the second thread surface 4122; and the first slider 413 is fixedly connected to the first clamp block 42; the second slider 414 is fixedly connected to the second clamp block 43. This structure enables the upper and lower first clamping blocks 42 and the second clamping blocks 43 to clamp, bend, and separate and discharge the pole lugs 61 under the driving action of the clamping and pushing motor 411, thereby improving the convenience of operation; and the first clamping blocks 42 and the second clamping blocks 43 can move toward or in opposite directions through a power source, thereby effectively reducing the investment in components and reducing production costs.

[0037] Specifically, in some embodiments, Figure 1 and 4 As shown, the separation structure 401 is a protrusion 421, one end of the protrusion 421 is connected to the first clamping block 42; the other end of the protrusion 421 is arranged to protrude from the first clamping block 42 toward the second clamping block 43. Figure 4 As shown, the length of the protrusion 421 close to the first clamping block 42 is greater than the length of the protrusion 421 close to the second clamping block 43 (as shown in FIG. Figure 1 As shown, the length direction is the Y-axis direction), and / or the width of the protrusion 421 close to the first clamping block 42 is greater than the width of the protrusion 421 close to the second clamping block 43 (as shown in Figure 1 As shown, the length direction is the X-axis direction); the structure can reduce the friction and impact between the tab 61 and the tab 61 by making the tab 421 closer to the first clamping block 42 larger than the tab 43, thereby ensuring the smoothness of the separation operation, improving the stability of use and extending its life. Figure 4As shown, the second clamping block 43 is provided with a limiting channel 431 corresponding to the protrusion 421. That is to say, the structure can improve the convenience of separation by the separation form of the protrusion 421 falling into the limiting channel 431, and can also ensure the clamping stability between the first clamping block 42 and the second clamping block 43, thereby improving the operation efficiency.

[0038] Specifically, in some embodiments, Figure 1 As shown, the driving mechanism 7 includes a displacement driving component 2 and a bending pushing component 3; the mounting end of the displacement driving component 2 is connected to the frame 1; the movable end of the displacement driving component 2 is drivingly connected to the mounting end of the bending pushing component 3, so that the bending pushing component 3 moves along the plane direction where the XY axis is located (horizontally moves in the direction of the pole ear 61); the movable end of the bending pushing component 3 is drivingly connected to the clamping pushing component 41, so that the clamping pushing component moves along the plane direction where the XZ axis is located or the plane direction where the YZ axis is located (upward and downward moves in the direction of the pole ear 61). This structure can avoid collisions with the battery body 6 before bending through the horizontal lateral driving movement of the displacement driving component 2 and the vertical lateral driving movement of the bending pushing component 3, thereby improving the operability of loading the battery body 6.

[0039] Specifically, in some embodiments, Figure 1 and 2 As shown, the displacement drive assembly 2 includes a displacement drive cylinder 21 and a first mounting plate 22 driven and connected to the displacement drive cylinder 21; the displacement drive cylinder 21 is connected to the frame 1; and the bending push assembly 3 is connected to the first mounting plate 22. This structure can realize the rapid displacement of the bending push assembly 3 under the driving action of the displacement drive cylinder 21, thereby improving the operating efficiency. In other embodiments (not shown in the figure), the displacement drive assembly 2 is a driving source formed by a displacement drive motor, a first drive screw and a third slider. That is, the displacement drive motor is connected to the frame 1 and is driven and connected to the first drive screw; the third slider is slidably connected to the outer surface of the first drive screw; and the bending push assembly 3 is connected to the third slider for sliding. This structure drives the movement of the first drive screw through the rotation of the displacement drive motor to determine the displacement of the bending push assembly 3 and avoid collision with the battery cell body, thereby improving the operational stability and safety. Among them, as Figure 2 As shown, the displacement driving assembly 2 further includes an L-shaped first connecting bracket 23; the first connecting bracket 23 is connected to the upper surface of the first mounting plate 22 or the third slider; the bending pushing assembly 3 is connected to the side end of the vertical portion of the first connecting bracket 23. This structure improves the protection performance of the bending pushing assembly 3 through the L-shaped first connecting bracket 23, and prevents the bending pushing assembly 3 from being damaged from the outside at the outer end.

[0040] Specifically, in some embodiments, Figure 2 As shown, the displacement drive assembly 2 also includes a first scale component 12; one end of the first scale component 12 is connected to the first mounting plate 22; the other end of the first scale component 12 is arranged on the frame 1. Among them, a mounting block 11 is arranged on the frame 1; the mounting block 11 is sleeved on the other end of the first scale component 12. Further, the first scale component 12 is a micrometer structure or a scale rod. The mechanism can effectively improve the accuracy of horizontal displacement and reduce the collision with the battery body 6 by adding a micrometer structure or a scale rod.

[0041] Specifically, in some embodiments, Figure 1 and 2 As shown, the bending push component 3 includes a bending drive component 31 and a second connecting bracket 32 ​​drivingly connected to the bending drive component 31; the bending drive component 31 is connected to the displacement drive component 2 (on the first connecting bracket 23 of the middle L shape); the clamping push component 41 is connected to the second connecting bracket 32. Figure 3 As shown, the bending drive component 31 is inclined with respect to the frame 1 at an installation inclination angle α and is arranged on the displacement drive assembly 2; and the installation inclination angle α satisfies: 30°≤α≤90°; the preferred angles are 30°, 60°, 45° and 90°. This structure can effectively ensure the orderliness of the upper and lower drive bending and guarantee the bending quality. Figure 2 and 3 As shown, the second connecting bracket 32 ​​includes a first connecting plate 321 and a second connecting plate 322; one end of the first connecting plate 321 is connected to the movable end of the bending drive component 31; the other end of the first connecting plate 321 is connected to one side end of the second connecting plate 322; and the clamping and pushing component 41 is connected to the other side end surface of the second connecting plate 322. In some embodiments, the bending drive component 31 is a driving source formed by a bending drive cylinder or a bending drive motor, a second driving screw and a fourth slider. That is, the bending drive motor is connected to the first connecting bracket 23 and is drivingly connected to the second driving screw; the fourth slider is slidably connected to the outer surface of the second driving screw; and the fourth slider is fixedly connected to the first connecting plate 321. The structure determines the displacement of the clamping and pushing component 41 by driving the driving source formed by the bending drive motor, the second driving screw and the fourth slider to avoid collision with the battery body, thereby improving operational stability and safety. The structure can realize rapid displacement of the clamping and pushing component 41 under the driving action of the bending drive cylinder, thereby improving operational efficiency.

[0042] Specifically, in some embodiments, Figure 2 and 3As shown in FIG. 5 , the frame 1 is further provided with a support plate 33; the bending push assembly 3 further includes a second scale component 34; one end of the second scale component 34 is connected to the second connecting bracket 32; the other end of the second scale component 34 is arranged on the support plate 33. Further, the second scale component 34 is a micrometer structure or a scale rod. The mechanism can effectively improve the accuracy of horizontal displacement and reduce the collision with the battery body 6 by adding a micrometer structure or a scale rod.

[0043] Specifically, in some embodiments, Figure 1 and 3 As shown, the frame 1 is provided with a positioning column 13; the positioning column 13 is arranged below the first clamping block 42 or below the second clamping block 43. Figure 3 As shown, the positioning column 13 is arranged below the second clamping block 43. This structure can effectively limit the limit position of the downward bending movement of the clamping mechanism 4 through the support of the positioning column 13, and avoid collision with the frame 1.

[0044] The utility model also proposes a battery cell bending machine, which includes a bending device for a battery cell tab. The specific structure of the bending device for the battery cell tab is referred to the above embodiment. Since the battery cell bending machine adopts all the technical solutions of all the above embodiments, it has at least all the beneficial effects brought by the technical solutions of the above embodiments, which will not be described one by one here. Figure 1 and 7 As shown, the bending device for the cell tab also includes a cell jig 5 and a manipulator, the cell jig 5 is provided with a positioning groove 51; the positioning groove 51 is arranged below the clamping mechanism 4; and the cell body 6 is connected to the inner wall of the positioning groove 51; the manipulator is used to transport the cell body 6 to the positioning groove 51. This structure achieves the supporting and positioning function of the cell body 6 by clamping the cell body 6 in the positioning groove 51, thereby preventing the cell body 6 from falling off during the bending process.

[0045] In addition, it should be understood that although the present specification is described according to implementation modes, not every implementation mode includes only one independent technical solution. This description of the specification is only for the sake of clarity. Those skilled in the art should regard the specification as a whole. The technical solutions in each embodiment can also be appropriately combined to form other implementation modes that can be understood by those skilled in the art.

[0046] According to the disclosure and teaching of the above description, the technical personnel in the field to which the utility model belongs can also change and modify the above implementation. Therefore, the utility model is not limited to the above specific implementation, and any obvious improvement, replacement or modification made by the technical personnel in the field on the basis of the utility model belongs to the protection scope of the utility model. In addition, although some specific terms are used in this specification, these terms are only for the convenience of description and do not constitute any limitation to the utility model.

Claims

1. A bending device for a battery cell tab, characterized in that: It includes a frame, a driving mechanism and a clamping mechanism; the driving mechanism is connected to the frame; the clamping mechanism includes a clamping and pushing component, a first clamping block and a second clamping block; the clamping and pushing component is movably connected to the driving mechanism; and the first clamping block and the second clamping block are both connected to the clamping and pushing component; and a clamping gap is provided between the first clamping block and the second clamping block; a partition structure is provided on the first clamping block and / or the second clamping block; and the partition structure is arranged in the clamping gap.

2. The bending device for the battery cell tab according to claim 1, characterized in that: The clamping component formed by the clamping and pushing component, the first clamping block and the second clamping block is a clamping claw cylinder; Or the clamping and pushing component includes a clamping and pushing motor, a rotating screw, a first slider and a second slider; the clamping and pushing motor is connected to the driving mechanism and is drivingly connected to one end of the rotating screw; the other end of the rotating screw is movably connected to the driving mechanism; and the outer surface of the rotating screw is provided with a first thread surface and a second thread surface with opposite thread directions; the first slider is slidably connected to the first thread surface; the second slider is slidably connected to the second thread surface; and the first slider is fixedly connected to the first clamping block; the second slider is fixedly connected to the second clamping block.

3. The bending device for the battery cell tab according to claim 1 or 2, characterized in that: The separation structure is a convex block, one end of which is connected to the first clamping block; the other end of which is protruding from the first clamping block toward the second clamping block.

4. The bending device for the battery cell tab according to claim 3, characterized in that: The second clamping block is provided with a limiting channel corresponding to the protrusion.

5. The bending device for the battery cell tab according to claim 3, characterized in that: The length of the protrusion close to the first clamping block is greater than the length of the protrusion close to the second clamping block; And / or the width of the protrusion close to the first clamping block is greater than the width of the protrusion close to the second clamping block.

6. The bending device for a battery cell tab according to claim 1, characterized in that: The driving mechanism includes a displacement driving component and a bending pushing component; the displacement driving component is connected to the frame; and the displacement driving component is drivingly connected to the bending pushing component so that the bending pushing component moves along the plane direction where the XY axis is located; the movable end of the bending pushing component is drivingly connected to the clamping pushing component so that the clamping pushing component moves along the plane direction where the XZ axis is located or the plane direction where the YZ axis is located.

7. The bending device for a battery cell tab according to claim 6, characterized in that: The displacement drive assembly further comprises a first scale component and a first mounting plate; one end of the first scale component is connected to the first mounting plate; and the other end of the first scale component is arranged on the frame.

8. The bending device for a battery cell tab according to claim 6, characterized in that: The bending pushing component comprises a bending driving component and a second connecting bracket drivingly connected to the bending driving component; the bending driving component is connected to the displacement driving component; and the clamping pushing component is connected to the second connecting bracket.

9. The bending device for a battery cell tab according to claim 8, characterized in that: The frame is also provided with a support plate; the bending and pushing assembly also includes a second scale component; one end of the second scale component is connected to the second connecting bracket; and the other end of the second scale component is arranged on the support plate.

10. A battery cell bending machine, characterized in that: It comprises a battery cell jig and a bending device for the battery cell tab as described in any one of claims 1 to 9; and the battery cell jig is provided with a positioning groove; the positioning groove is arranged below the clamping mechanism; and the positioning groove is used to place the battery cell body.

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