Rolling device

Abstract

The utility model provides a rolling device. The rolling device comprises a rolling mechanism, a first driving assembly and a second driving assembly. The rolling mechanism comprises a roller assembly and an elastic assembly, and the two ends of the roller assembly are rotatably connected to the elastic assembly through the axis; the elastic assembly is arranged between the driving end of the first driving assembly and the roller assembly, and the first driving assembly drives the roller assembly to move in the vertical direction; and the second driving assembly is in linkage connection with the first driving assembly, and the second driving assembly drives the rolling wheel assembly to move in the horizontal direction. According to the embodiment of the invention, the elastic assembly is arranged to provide buffering force in the process that the first driving assembly drives the roller assembly to move, so that the tab is prevented from being extruded due to excessive force under the condition that the roller assembly presses the tab, the problem that the tab rebounds or arches after being bent is avoided, and the product quality is improved.

Description

Technical Field

[0001] The present application relates to the technical field of battery manufacturing, and in particular to a rolling device. Background Art

[0002] In the manufacturing process of battery modules, busbar installation is an important process, which affects the subsequent welding process and is related to the quality of battery products. After the battery modules are stacked, the busbar assembly process is performed. At this time, the battery tabs are vertically facing the same direction, and the gaps of the busbars are nested around the tabs. The tabs are then bent and the subsequent welding process is performed.

[0003] However, during the current busbar installation process, the tabs may rebound or bulge after being bent, and excessive squeezing of the tabs after bending can easily cause the tabs to break, resulting in a decrease in product quality. Utility Model Content

[0004] The present application aims to solve at least one of the technical problems existing in the prior art. To this end, the present application proposes a rolling device that can prevent the tab from rebounding or arching after bending, thereby improving product quality.

[0005] In a first aspect, an embodiment of the present application provides a rolling device, comprising: a rolling mechanism, comprising a roller assembly and an elastic assembly, wherein the roller assembly is rotatably connected to the elastic assembly at both ends of an axis;

[0006] A first driving assembly, wherein the elastic assembly is arranged between a driving end of the first driving assembly and the roller assembly, and the first driving assembly is used to drive the roller assembly to move along a vertical direction;

[0007] The second driving assembly is linked with the first driving assembly, and the second driving assembly drives the roller assembly to move in a horizontal direction.

[0008] According to some embodiments of the present application, the first driving component is provided with at least one roller component; and at least two elastic components are provided between the first driving component and one roller component.

[0009] According to some embodiments of the present application, the elastic component is disposed between the first driving component and one of the roller components, and the elastic components are arranged linearly and in parallel.

[0010] According to some embodiments of the present application, the first driving assembly is provided with at least two roller assemblies, and the axes of the roller assemblies are on the same axis.

[0011] According to some embodiments of the present application, the first driving assembly can synchronously drive the roller assembly to move in a vertical direction.

[0012] According to some embodiments of the present application, the second driving assembly can synchronously drive the roller assembly to move in a horizontal direction.

[0013] According to some embodiments of the present application, the rolling device also includes a flattening mechanism, which is arranged on the mounting plate; the flattening mechanism includes a third drive assembly and a pressure head, the third drive assembly is used to drive the pressure head to move in a vertical direction, and the flattening mechanism is used to flatten the pole ear.

[0014] According to some embodiments of the present application, the pressure head has a contact surface with the pole ear, which is used to flatten the bent pole ear, and the area of ​​the contact surface is equal to the bent area of ​​the pole ear.

[0015] According to some embodiments of the present application, the rolling device is provided with at least two flattening mechanisms, and the flattening mechanisms are arranged in parallel.

[0016] According to some embodiments of the present application, the rolling device further includes a supporting assembly and a fourth driving member, the rolling mechanism and the flattening mechanism are both arranged on the supporting assembly, and the fourth driving member drives the supporting assembly to move along the logistics line direction.

[0017] The technical solution according to the embodiment of the present application includes but is not limited to the following technical effects: the rolling device in the present embodiment includes a rolling mechanism and a first driving component that are interconnected, and the elastic component in the rolling mechanism is respectively connected to the roller component and the first driving component. By setting the elastic component, a buffer force can be provided in the process of the first driving component driving the roller component to move in the vertical direction, so that when the roller component presses the pole ear, excessive force can be avoided to cause squeezing of the pole ear, and the pressure on the pole ear can be adjusted. The second driving component is linked to the first driving component. When the second driving component drives the first driving component to move in the horizontal direction, the roller component is further driven to roll the pole ear in the horizontal direction, thereby avoiding the pole ear from rebounding or arching after bending, thereby improving product quality.

[0018] A technical solution provided in another embodiment of the present application, by adding a flattening mechanism, decomposes the rolling process of the pole ear, and avoids the one-time fracture extrusion of the pole ear through a secondary rolling operation.

[0019] Additional aspects and advantages of the present application will be given in part in the description below, and in part will become apparent from the description below, or will be learned through the practice of the present application. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] The accompanying drawings are used to provide further understanding of the technical solution of the present application and constitute a part of the specification. Together with the embodiments of the present application, they are used to explain the technical solution of the present application and do not constitute a limitation on the technical solution of the present application.

[0021] Figure 1 is a schematic structural diagram of a rolling device provided by an embodiment of the present application;

[0022] Figure 2 is a structural schematic diagram of a rolling mechanism provided by an embodiment of the present application;

[0023] Figure 3 It is a structural schematic diagram of a flattening mechanism provided in one embodiment of the present application.

[0024] Reference numerals:

[0025] The first driving assembly 110, the second driving assembly 120, the roller assembly 210, the elastic assembly 220, the first fixing plate 230, the second fixing plate 240, the connecting assembly 310, the mounting plate 320, the third driving assembly 330, the pressure head 340, the sensor assembly 350, the supporting assembly 420, the supporting plate 430, the bracket 440, and the fourth driving member 450. DETAILED DESCRIPTION

[0026] The embodiments of the present application are described in detail below, and examples of the embodiments are shown in the accompanying drawings, wherein the same or similar reference numerals throughout represent the same or similar elements or elements having the same or similar functions. The embodiments described below with reference to the accompanying drawings are exemplary and are only used to explain the present application, and cannot be understood as limiting the present application.

[0027] In the description of the present application, it should be understood that descriptions involving orientation, such as up, down, front, back, left, right, etc., indicating orientations or positional relationships, are based on the orientations or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present application and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be understood as a limitation on the present application.

[0028] In the description of this application, "several" means one or more, "more" means more than two, "greater than", "less than", "exceed", etc. are understood to exclude the number itself, and "above", "below", "within", etc. are understood to include the number itself. If there is a description of "first" or "second", it is only used for the purpose of distinguishing technical features, and cannot be understood as indicating or implying relative importance or implicitly indicating the number of the indicated technical features or implicitly indicating the order of the indicated technical features.

[0029] In the description of this application, unless otherwise clearly defined, terms such as setting, installing, connecting, etc. should be understood in a broad sense, and technicians in the relevant technical field can reasonably determine the specific meanings of the above terms in this application based on the specific content of the technical solution.

[0030] In the manufacturing process of battery modules, busbar installation is an important process, which affects the subsequent welding process and is related to the quality of battery products. After the battery modules are stacked, the busbar assembly process is performed. At this time, the battery tabs are vertically facing the same direction, and the gaps of the busbars are nested around the tabs. The tabs are then bent and the subsequent welding process is performed. However, in the current busbar installation process, there may be problems with the tabs rebounding or arching after bending, and excessive squeezing of the tabs after bending can easily cause the tabs to break, resulting in a decrease in product quality.

[0031] Based on the above situation, an embodiment of the present application provides a rolling device. The rolling device in this embodiment includes a rolling mechanism and a first driving component that are connected to each other, and the elastic component in the rolling mechanism is respectively connected to the roller component and the first driving component. By setting the elastic component, a buffer force can be provided in the process of the first driving component driving the roller component to move in the vertical direction, thereby avoiding excessive force to squeeze the pole ear when the roller component presses the pole ear, and adjusting the pressure on the pole ear. The second driving component is linked to the first driving component. When the second driving component drives the first driving component to move in the horizontal direction, the roller component is further driven to roll the pole ear in the horizontal direction, thereby avoiding rebound or arching of the pole ear after bending, thereby improving product quality.

[0032] like Figure 1 As shown, Figure 1 It is a schematic diagram of the structure of a rolling device provided in one embodiment of the present application.

[0033] In some embodiments, the rolling device of the embodiment of the present application includes a rolling mechanism, a first driving component 110 and a second driving component 120, the rolling mechanism includes a roller component 210 and an elastic component 220, the roller component 210 is rotatably connected to the elastic component 220 at both ends of the axis, the driving end of the first driving component 110 is connected to the end of the elastic component 220 away from the roller component 210, that is, the two ends of the elastic component 220 are respectively connected to the first driving component 110 and the roller component 210, and the present embodiment can drive the elastic component 220 along the vertical direction ( Figure 1 The Z-axis direction in the middle) is lifted and lowered, and then the tab is pressed by the roller assembly 210, that is, along the Figure 1 The roller assembly 210 moves in the Z-axis direction, and a certain buffering force is provided by arranging the elastic component 220 between the two. At the same time, the vibration and vibration generated by the roller assembly 210 during operation can be reduced, making the operation more stable and stable.

[0034] It can be understood that the vertical direction is a direction parallel to the length direction of the rolling mechanism, that is, Figure 1 In the Z-axis direction, when the roller assembly 210 is subjected to external force or vibration, the spring can absorb and reduce these forces, thereby protecting the roller assembly 210 and other mechanism components and preventing the tabs from being damaged or broken due to excessive extrusion.

[0035] like Figure 2 As shown, Figure 2 It is a structural schematic diagram of a rolling mechanism provided in one embodiment of the present application.

[0036] It should be noted that the rolling mechanism of this embodiment includes a plurality of roller assemblies 210, and the number of rollers in the roller assemblies 210 is set to be several. In some embodiments, the first drive assembly is provided with at least one roller assembly 210, and at least two elastic assemblies are provided between the first drive assembly and a roller assembly. Similarly, the elastic assembly 220 in this embodiment includes a plurality of elastic components, wherein the elastic assembly 220 in this embodiment can be a plurality of spring assemblies, hydraulic cylinder assemblies, hydraulic buffers, etc., and this embodiment does not make specific restrictions.

[0037] It is worth noting that the elastic components 220 in this embodiment are arranged in a linear and parallel manner between the first driving component 110 and a roller component 210, that is, the elastic components 220 are arranged linearly between the first driving component 110 and a roller component 210, and each elastic component 220 is parallel to each other, so that the relative positions of the elastic components 220 remain consistent without crossing or deviation.

[0038] In some embodiments, when the first driving assembly 110 is provided with a plurality of roller assemblies 210 , for example, the first driving assembly 110 is provided with at least two roller assemblies 210 , the axes of the roller assemblies 210 are located on the same axis. Figure 2 Take the example that the first driving assembly 110 is provided with a plurality of roller assemblies 210 and each roller assembly 210 is provided with two elastic assemblies 220. Figure 2 The axes of several roller assemblies 210 are on the same axis, the number of springs in each elastic assembly 220 is equal, and the elastic assembly 220 is symmetrically arranged between the first driving assembly 110 and the roller assembly 210 with the axis of the roller assembly 210 as the axis. When the roller assembly 210 is acted upon by external forces, the springs can absorb part of the pressure and provide reaction force, thereby avoiding excessive pressure on the tabs and reducing the risk of tab breakage.

[0039] In some embodiments, the driving end of the second driving assembly 120 is connected to the first driving assembly 110, and the second driving assembly 120 drives the first driving assembly 110 to move in a horizontal direction ( Figure 1 and Figure 2 When the first drive assembly 110 moves in the X-axis direction, the roller assembly 210 moves along the driving direction of the first drive assembly 110, so that the roller assembly 210 can roll the pole ear in the horizontal direction. At this time, the roller assembly 210 rolls over the pole ear in the horizontal direction to achieve rolling of multiple pole ears, so that the bent pole ears can be evenly stressed, avoiding rebound or arching problems, and improving the rolling efficiency of the pole ears.

[0040] It should be noted that the horizontal direction is parallel to the width direction of the logistics line and also parallel to the width direction of the rolling mechanism, that is, Figure 1 and Figure 2 In the X-axis direction, specifically, after the battery module enters the bus assembly process, the battery tabs are vertically oriented in the same direction, and then the tabs are bent. At this time, the tabs are attached to the logistics line, and the first drive component 110 drives the elastic component 220 to move back and forth in the vertical direction perpendicular to the logistics line. Through the action of the first drive component 110 and the elastic component 220, the roller component 210 can be lifted and moved above the tab to achieve compression of the tab, and a certain buffering force is provided by the elastic component 220, thereby avoiding damage or breakage of the tab due to excessive extrusion. Similarly, the second drive component 120 is linked to the first drive component 110, and the second drive component 120 can drive the first drive component 110 to move back and forth in the width direction of the logistics line, so that the roller component 210 can roll the tab in the horizontal direction under the drive of the second drive component 120, that is, repeatedly move on the surface of the tab to achieve rolling of the tab, thereby avoiding rebound or arching of the tab after bending.

[0041] It is worth noting that the first drive component 110 in this embodiment can synchronously drive the roller component 210 to move along the vertical direction (Z-axis direction in the figure), and the second drive component 120 can synchronously drive the roller component to move along the horizontal direction (X-axis direction in the figure), and the first drive component 110 and the second drive component 120 can be a cylinder drive structure, a hydraulic cylinder drive structure, a combined drive structure of a motor and a screw rod, or other drive structures. The embodiment of the present application does not specifically limit the structure of the first drive component 110 and the second drive component 120.

[0042] It can be understood that the first drive component 110 in this embodiment is a lifting drive component, which can drive the roller component 210 to move up and down along the vertical direction of the rolling mechanism, and the second drive component 120 is a linear motor, which can drive the rolling mechanism to move back and forth along the width direction of the logistics line.

[0043] In some embodiments, the rolling device also includes a frame and a support assembly 420 installed on the frame, the second drive assembly 120 is connected to the support assembly 420 to fix the second drive assembly 120, and the rolling mechanism is arranged on the support assembly 420, wherein the support assembly 420 can be a horizontal bar assembly, a gantry assembly, etc., and this embodiment does not make specific restrictions.

[0044] Specifically, the frame in this embodiment is a rectangular structure, and the frame includes a load-bearing plate 430 and a frame foot 440. The load-bearing plates 430 are symmetrically arranged on both sides of the frame, and the support assembly 420 is mounted on the load-bearing plates 430. The bottom of each frame foot 440 of the frame is provided with a first fixing structure, so as to fix the frame, avoid the position movement of the frame during operation, and improve the stability of the operation process. A second fixing structure is provided at the angle between the load-bearing plate 430 and the frame foot 440, so as to ensure the stability of the load-bearing, avoid the position deviation during the operation of the frame, affect the rolling efficiency of the tab, and improve the stability of the tab rolling process.

[0045] like Figure 3 As shown, Figure 3 It is a structural schematic diagram of a flattening mechanism provided in one embodiment of the present application.

[0046] In some embodiments, the rolling device also includes a flattening mechanism and a mounting plate 320, and the flattening mechanism is arranged on the support assembly 420 of the mounting plate 320; the flattening mechanism includes a third driving assembly 330 and a pressing head 340, and the third driving assembly 330 is arranged between the mounting plate 320 and the pressing head 340. The third driving assembly 330 is used to drive the pressing head 340 to move in a vertical direction, and the flattening mechanism is used to flatten the pole ear to achieve the shaping and flattening of the pole ear.

[0047] Specifically, the flattening mechanism is connected to the bottom of the support assembly 420 through the connecting assembly 310. The connecting assembly 310 is arranged between the support assembly 420 and the mounting plate 320 to connect the support assembly 420 and the flattening mechanism. Through the mutual cooperation between the connecting assembly 310 and the mounting plate 320, the flattening mechanism can be fixed under the support assembly 420 to avoid position movement during the flattening process. The pressing head 340 is connected to the mounting plate 320 through the third driving assembly 330. The third driving assembly 330 is used to drive the pressing head 340 to move along the first direction to flatten the pole ear, that is, the third driving assembly 330 can drive the pressing head 340 to move up and down along the vertical direction of the rolling mechanism to achieve the shaping and flattening of the pole ear, which is convenient for the subsequent processing of the pole ear.

[0048] It should be noted that the rolling mechanism in this embodiment is installed on one side of the support assembly 420, and the flattening mechanism is installed below the support assembly 420. After the pole ear is bent, the first drive assembly 110 and the second drive assembly 120 cooperate with each other to drive the rolling mechanism to roll the pole ear, and then the third drive assembly 330 drives the pressure head 340 to move along the first direction, that is, to move vertically above the pole ear to achieve shaping and flattening of the pole ear. This embodiment gradually shapes and flattens the pole ear through the cooperation between the rolling mechanism and the flattening mechanism, avoiding its rebound and the problem of pole ear breakage.

[0049] It is worth noting that after the pole ear in this embodiment is bent, it is successively subjected to rolling treatment by a rolling mechanism and flattening treatment by a flattening mechanism, which can gradually reduce the stress concentration of the pole ear and ensure that the pressure is more evenly distributed on the entire surface of the pole ear, thereby reducing the risk of the pole ear breaking during the processing process, avoiding extrusion caused by excessive pressure during the flattening process of the pole ear, protecting the integrity of the pole ear and improving the quality of the product.

[0050] In some embodiments, the pressing head 340 has a contact surface with the pole ear, which is used to flatten the pole ear after being bent. The area of ​​the contact surface is equal to the bent area of ​​the pole ear. Specifically, the contact surface of the pressing head 340 is a flat surface. After the pole ear is rolled, the third driving component 330 drives the pressing head 340 to move toward the pole ear to apply pressure to the pole ear to flatten the pole ear. The pressing head 340 presses against the pole ear through one end of the flat surface, thereby ensuring the stability and uniformity of the pole ear during contact and avoiding damage to the shape of the pole ear.

[0051] Understandably, Figure 3 The third drive component 330 is a lifting cylinder. In addition, the third drive component 330 in this embodiment can be a cylinder drive structure, a hydraulic cylinder drive structure, a combination drive structure of a motor and a screw rod, or other drive structures. The embodiment of the present application does not specifically limit the structure of the third drive component 330.

[0052] In some embodiments, the flattening mechanism also includes a sensor assembly 350, which is disposed on one side of the connecting assembly 310, and the sensor assembly 350 is connected to the pressing head 340 to detect the position of the pressing head 340, thereby detecting the real-time position of the pressing head 340 to ensure the accuracy and safety of the operation.

[0053] It should be noted that the rolling device is provided with at least two flattening mechanisms, which are arranged in parallel. Figure 3 Taking the setting of several flattening mechanisms as an example, several flattening mechanisms are arranged in parallel on the mounting plate 320, each flattening mechanism includes a third driving assembly 330, a pressure head 340 and a sensor assembly 350, the pressure heads 340 of the flattening mechanisms are relatively parallel, and each pressure head 340 is connected to the third driving assembly 330, and two sensor assemblies 350 are respectively arranged on one side of the connecting assembly 310, and the third driving assembly 330 in this embodiment drives the pressure head 340 to move along the vertical direction perpendicular to the pole ear, and the sensor assembly 350 is respectively connected to the pressure heads 340 in the two flattening mechanisms to detect the real-time positions of the two pressure heads 340, so as to ensure the safety during the flattening process of the pole ear and avoid the occurrence of cracking or breaking of the pole ear.

[0054] In some embodiments, the rolling mechanism also includes a first fixed plate 230 and a second fixed plate 240, the roller assembly 210 is connected to the first fixed plate 230, one end of the elastic assembly 220 is connected to the first fixed plate 230, and the other end is connected to the second fixed plate 240, the first fixed plate 230 and the second fixed plate 240 cooperate with each other to fix the elastic assembly 220 to prevent the elastic assembly 220 from moving or loosening, thereby further ensuring the stability and reliability of the rolling mechanism.

[0055] Specifically, the first fixing plate 230 and the second fixing plate 240 cooperate with each other to fix the elastic component 220, ensuring the stability and reliability of the rolling mechanism, increasing the structural strength of the entire rolling mechanism, and ensuring that the elastic component 220 can play a role in buffering and adjusting pressure under the drive of the first driving component 110.

[0056] It is understandable that, in this embodiment, the elastic component 220 can be connected to the first fixing plate 230 and the second fixing plate 240 by bolt connection, pin connection, welding connection, etc., and this embodiment does not make specific limitations.

[0057] In some embodiments, the rolling device also includes a fourth driving member 450 and a slide rail arranged along the direction of the logistics line, the slide rails are symmetrically arranged on both sides of the frame, the support assembly 420 is mounted on the slide rail, and the support assembly 420 is provided with a fourth driving member 450. The fourth driving member 450 is used to drive the support assembly 420 to move along the logistics line direction (the Y-axis direction in the figure), and can further drive the rolling mechanism and the flattening mechanism arranged on the support assembly 420, thereby improving the flattening efficiency of the pole ear and further improving the production efficiency of the battery.

[0058] It can be understood that the fourth driving member can drive the supporting assembly to move on the slide rail along the length direction of the logistics line, wherein the length direction of the logistics line is parallel to the length direction of the logistics line. Figure 1-3 The fourth driving member 450 is parallel to the Y-axis direction in the figure, and can be a cylinder driving structure, a hydraulic cylinder driving structure, a combined driving structure of a motor and a screw rod, or other driving structures. The embodiment of the present application does not specifically limit the structure of the fourth driving member 450.

[0059] The above is a specific description of the preferred implementation of the present application, but the present application is not limited to the above implementation mode. Technical personnel familiar with the field can also make various equivalent modifications or substitutions under the shared conditions without violating the spirit of the present application. These equivalent modifications or substitutions are all included in the scope defined by the claims of the present application.

Claims

1. A rolling device, characterized in that: include: The rolling mechanism comprises a roller assembly (210) and an elastic assembly (220), wherein the roller assembly (210) is rotatably connected to the elastic assembly (220) at both ends of an axis; A first driving component (110), wherein the elastic component (220) is arranged between a driving end of the first driving component (110) and the roller component (210), and the first driving component (110) drives the roller component (210) to move along a vertical direction; A second driving assembly (120), wherein the second driving assembly (120) is linked to the first driving assembly (110), and the second driving assembly (120) drives the roller assembly (210) to move in a horizontal direction.

2. The rolling device according to claim 1, characterized in that: The first driving component (110) is provided with at least one roller component (210); and at least two elastic components (220) are provided between the first driving component (110) and one roller component (210).

3. The rolling device according to claim 2, characterized in that: The elastic component (220) is arranged between the first driving component (110) and one of the roller components (210), and the elastic components (220) are arranged linearly and in parallel.

4. The rolling device according to claim 1, characterized in that: The first driving assembly (110) is provided with at least two roller assemblies (210), and the axes of the roller assemblies (210) are located on the same axis.

5. The rolling device according to claim 3 or 4, characterized in that: The first driving assembly (110) can synchronously drive the roller assembly (210) to move along a vertical direction.

6. The rolling device according to claim 3 or 4, characterized in that: The second driving assembly (120) can synchronously drive the roller assembly (210) to move in a horizontal direction.

7. The rolling device according to claim 1, characterized in that: The rolling device further comprises a flattening mechanism and a mounting plate (320), wherein the flattening mechanism is arranged on the mounting plate (320); the flattening mechanism comprises a third driving assembly (330) and a pressing head (340), wherein the third driving assembly (330) is used to drive the pressing head (340) to move in a vertical direction, and the flattening mechanism is used to flatten the pole ear.

8. The rolling device according to claim 7, characterized in that: The pressing head (340) has a contact surface with the pole tab, and is used to flatten the bent pole tab, and the area of ​​the contact surface is equal to the bent area of ​​the pole tab.

9. The rolling device according to claim 7, characterized in that: The rolling device is provided with at least two flattening mechanisms, and the flattening mechanisms are arranged in parallel.

10. The rolling device according to claim 7, characterized in that: The rolling device further comprises a support assembly (420) and a fourth driving member (450); the rolling mechanism and the flattening mechanism are both arranged on the support assembly (420); and the fourth driving member (450) drives the support assembly (420) to move along the direction of the logistics line.

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