Bending equipment and battery production line

Abstract

The utility model provides bending equipment and a battery production line. The bending equipment comprises a primary bending mechanism and a secondary bending mechanism; the primary bending mechanism can be used for bending a battery tab and enabling a battery cap to incline to a set angle; the secondary bending mechanism comprises a secondary scraper knife assembly and a pressing assembly, and the secondary scraper knife assembly can enable the battery cover cap to move to a set position of a battery shell opening, so that the pressing assembly can press the battery cover cap into the battery shell opening. The bending equipment provided by the utility model can prevent the bent battery tab from rebounding and improve the production quality of the battery.

Description

Technical Field

[0001] The utility model relates to the technical field of battery production, and more specifically, to a bending device and a battery production line. Background Art

[0002] During battery manufacturing, after welding the battery cap to the battery tab, the tab needs to be bent before the capping process. Existing bending equipment produces significant rebound after bending the tab, making it difficult to properly snap the cap into the battery shell during the subsequent capping process, posing a risk of cap breakage. Utility Model Content

[0003] One object of the present invention is to provide a bending device and a battery production line to at least solve one of the problems of the background technology.

[0004] According to a first aspect of the present invention, there is provided a bending device comprising:

[0005] A primary bending mechanism capable of bending the battery tabs and tilting the battery cap to a set angle;

[0006] A secondary bending mechanism includes a secondary scraper assembly and a pressing assembly. The secondary scraper assembly can move the battery cap to a set position of the battery shell opening so that the pressing assembly can press the battery cap into the battery shell opening.

[0007] Optionally, the secondary scraper assembly includes a secondary scraper and a first driving member, wherein the first driving member is configured to drive the secondary scraper toward or away from the battery cap along a first direction;

[0008] The pressing assembly includes a pressing rod and a second driving member, wherein the second driving member is configured to drive the pressing rod to move closer to or away from the battery cap along a second direction;

[0009] The first direction is consistent with the tilt direction of the battery cap, and the second direction is consistent with the orientation of the battery shell opening.

[0010] Optionally, the center of the secondary scraper is aligned with the center of the battery cap.

[0011] Optionally, the secondary scraper has an abutment portion and a limiting portion;

[0012] The abutting portion can contact the side of the battery cap to push the battery cap to move to the set position, and the limiting portion faces the top surface of the battery cap to limit the battery cap from deviating in a direction away from the battery shell opening.

[0013] Optionally, the limiting portion is configured as an inclined surface relative to the top surface of the battery cap, and an escape opening is provided on the limiting portion, so that the pressing rod can press against the top surface of the battery cap.

[0014] Optionally, the primary bending mechanism includes a primary blade assembly and a bending assembly;

[0015] The primary scraper assembly can be pressed against the battery tab, so that the bending assembly can press the battery cap until it tilts to the set angle.

[0016] Optionally, the primary scraper assembly includes a third driving member and a primary scraper, and the third driving member is configured to drive the primary scraper to approach or move away from the battery tab along a third direction;

[0017] The bending assembly includes a fourth driving member and a roller, wherein the fourth driving member is capable of driving the roller to move closer to or away from the battery cap along a fourth direction;

[0018] The third direction is perpendicular to the direction of the battery shell opening, and the fourth direction is opposite to the third direction.

[0019] Optionally, the primary scraper is flat, and the width of the primary scraper is greater than or equal to the width of the battery tab; and / or,

[0020] The center of the primary scraper is aligned with the center of the battery tab.

[0021] Optionally, the width of the roller is greater than or equal to the maximum width of the battery cap.

[0022] Optionally, the set angle is an angle of 70° to 90° with respect to the direction of the battery shell opening.

[0023] Optionally, it further includes a battery conveying line, which is used to convey batteries to the primary bending mechanism and the secondary bending mechanism.

[0024] Optionally, the primary bending mechanism and the secondary bending mechanism are respectively provided in multiple groups, and the multiple groups of the primary bending mechanism and the secondary bending mechanism are sequentially arranged on one side of the battery conveying line.

[0025] According to a second aspect of the present invention, a battery production line is provided, comprising: the bending equipment described in the first aspect.

[0026] One of the technical effects of the present invention is that, by providing a primary bending mechanism and a secondary bending mechanism, the battery tab can be bent until the battery cap is pressed into the battery shell opening, thereby suppressing the rebound of the battery tab, facilitating subsequent processes such as buckling and welding the battery cap, and improving the production quality of the battery.

[0027] Other features and advantages of the present invention will become apparent from the following detailed description of exemplary embodiments of the present invention with reference to the accompanying drawings. BRIEF DESCRIPTION OF THE DRAWINGS

[0028] The accompanying drawings, which constitute a part of the specification, illustrate embodiments of the present invention and, together with the description, serve to explain the principles of the present invention.

[0029] Figure 1 It is a schematic diagram of a bending device provided by the utility model.

[0030] Figure 2 It is a schematic diagram of the one-time bending mechanism provided by the utility model.

[0031] Figure 3 yes Figure 2 side view.

[0032] Figure 4 yes Figure 2 Schematic diagram of the bending action of the single bending mechanism.

[0033] Figure 5 It is a schematic diagram of the secondary bending mechanism provided by the utility model.

[0034] Figure 6 yes Figure 5 side view.

[0035] Figure 7 It is a structural schematic diagram of the secondary scraper provided by the utility model.

[0036] Figure 8 yes Figure 7 side view.

[0037] Figure 9 yes Figure 5 One of the bending action diagrams of the secondary bending mechanism in FIG.

[0038] Figure 10 yes Figure 5 The second schematic diagram of the bending action of the secondary bending mechanism.

[0039] Description of reference numerals:

[0040] 100, primary bending mechanism; 101, third driving member; 102, primary scraper; 103, fourth driving member; 104, roller; 105, third bracket; 106, fourth bracket;

[0041] 200, secondary bending mechanism; 201, first driving member; 202, secondary scraper; 2021, abutment portion; 2022, limit portion; 2023, avoidance opening; 203, lower pressure rod; 204, second driving member; 205, first bracket; 206, second bracket;

[0042] 300, battery conveyor line;

[0043] 400, battery; 401, battery cap; 402, battery tab; 403, battery shell opening. DETAILED DESCRIPTION

[0044] Various exemplary embodiments of the present invention will now be described in detail with reference to the accompanying drawings. It should be noted that unless otherwise specifically stated, the relative arrangements of components and steps, numerical expressions and numerical values ​​set forth in these embodiments do not limit the scope of the present invention.

[0045] The following description of at least one exemplary embodiment is merely illustrative in nature and is in no way intended to limit the present invention, its application, or uses.

[0046] Techniques and equipment known to ordinary technicians in the relevant art may not be discussed in detail, but where appropriate, the techniques and equipment should be considered part of the specification.

[0047] In all examples shown and discussed herein, any specific values ​​should be interpreted as merely exemplary and not limiting. Therefore, other examples of the exemplary embodiments may have different values.

[0048] It should be noted that like reference numerals and letters refer to like items in the following figures, and therefore, once an item is defined in one figure, it need not be further discussed in subsequent figures.

[0049] In some battery structures, the battery comprises a housing, a cap that snaps onto the housing opening, and a battery cell within the housing. The cap is connected to the tabs on the battery cell. Before snapping the cap into the housing, the tabs need to be bent in advance to ensure smooth insertion. During this process, some tabs are prone to rebounding after being bent.

[0050] According to the first aspect of the present invention, Figures 1 to 10As shown, a bending device is provided, including: a primary bending mechanism 100 and a secondary bending mechanism 200; the primary bending mechanism 100 can bend the battery tab 402 and tilt the battery cap 401 to a set angle; the secondary bending mechanism 200 includes a secondary scraper assembly and a pressing assembly, the secondary scraper assembly can move the battery cap 401 to a set position of the battery shell opening 403, so that the pressing assembly can press the battery cap 401 into the battery shell opening 403.

[0051] Specifically, in this embodiment, the bending device includes a primary bending mechanism 100 and a secondary bending mechanism 200, wherein the primary bending mechanism 100 can first bend the battery tab 402 until the battery cap 401 is tilted to a set angle. Figures 2 to 4 After being bent, the battery tab 402 has a certain rebound, which is not convenient for the subsequent buckling process. The present application uses the secondary bending mechanism 200 to bend the battery tab 402 again, that is, the secondary scraper assembly is used to move the battery cap 401 to the set position of the battery shell opening 403. This set position can be matched according to the pressing form of the pressing assembly. For example, it is usually at a position facing the battery shell opening 403 or the battery cell in the shell opening, which is convenient for the pressing assembly to press the battery cap 401 directly into the battery shell opening 403. Figure 5 、 Figure 6 and Figure 9 .

[0052] It should be noted that in this embodiment, the pressing assembly only needs to press the battery cap 401 into the edge of the shell opening to suppress the rebound of the battery tab 402, without pressing it to a fully engaged state. In the subsequent capping process, the battery cap 401 can be properly snapped into the interior of the battery shell opening 403, avoiding the risk of damage to the battery cap 401, thereby reducing the operational risks in the capping process and improving the quality and yield of the final product. Typically, the battery cap 401 can be pressed into the battery shell opening 403 by 1mm to 2mm. The battery 400 can be a cylindrical battery 400 or a square-shell battery 400, etc.

[0053] Alternatively, as Figures 5 to 10 As shown, the secondary scraper assembly includes a secondary scraper 202 and a first drive member 201, and the first drive member 201 is configured to be able to drive the secondary scraper 202 along a first direction (Y direction in the drawing) close to or away from the battery cap 401; the pressing assembly includes a pressing rod 203 and a second drive member 204, and the second drive member 204 is configured to be able to drive the pressing rod 203 along a second direction (Z direction in the drawing) close to or away from the battery cap 401; wherein the first direction is consistent with the inclination direction of the battery cap 401, and the second direction is consistent with the orientation of the battery shell opening 403.

[0054] Specifically, in this embodiment, the secondary scraper 202 can be movably arranged on the first bracket 205, so that the first driving member 201 can drive the secondary scraper 202 to move closer to or away from the battery cap 401 along the first direction, so that the battery cap 401 moves to the set position of the battery shell opening 403. Figure 9 Left side figure; the pressing rod 203 can be movably provided on the second bracket 206, so that the second driving member 204 can drive the pressing rod 203 along the second direction close to or away from the battery cap 401, so that the battery cap 401 can be pressed into the battery shell opening 403 to a certain depth position, reference Figure 9 The middle right figure shows how to prevent the battery cap 401 from being accurately fastened into the battery shell opening 403 due to the rebound of the battery tab 402 .

[0055] In the above embodiment, the first direction is consistent with the tilt direction of the battery cap 401, so that the secondary scraper 202 can be pressed against the side of the battery cap 401, so that the secondary scraper 202 moves along the first direction under the action of the first driving member 201. Figure 4 , so as to push the battery cap 401 to move to the position just above the battery shell opening 403 or to another suitable position, thereby facilitating the downward pressing action of the pressing rod 203. The second direction is aligned with the direction of the battery shell opening 403, so that after the battery cap 401 is pushed above the battery shell opening 403 by the secondary scraper 202, the pressing column can easily press the battery cap 401, thereby preventing the battery cap 401 from being pressed off-center.

[0056] In actual applications, the battery 400 is usually transported vertically to the primary bending mechanism 100 and the secondary bending mechanism 200. The battery shell opening 403 is oriented in the vertical direction. The first direction is a direction having a set angle with the vertical direction, which is consistent with the inclination angle of the battery cap 401 after the battery tab 402 is bent by the primary bending mechanism 100. The set angle of the battery cap 401 with the vertical direction after the battery tab 402 is bent by the primary bending mechanism 100 is usually between 70° and 90°. In addition, the first driving member 201 and the second driving member 204 in the above structure can be driven by a cylinder or a motor, and the secondary scraper 202 and the lower pressure rod 203 can be movably assembled on the first bracket 205 and the second bracket 206 in the form of a slider and a slide rail. The first bracket 205 and the second bracket 206 can be an integral structure or a split structure, and the present invention does not impose any restrictions on this.

[0057] Alternatively, as Figure 5 and 10 As shown, the center of the secondary blade 202 is aligned with the center of the battery cap 401 .

[0058] Specifically, in this embodiment, the center of the secondary scraper 202 is aligned with the center of the battery cap 401 to prevent the secondary scraper 202 from deflecting when pushing the battery cap 401 obliquely, thereby improving the movement accuracy of the mechanism. The center of the secondary scraper 202 refers to the widthwise centerline of the secondary scraper 202 being parallel to or directly aligned with the centerline of the battery cap 401.

[0059] Alternatively, as Figures 5 to 10 As shown, the secondary scraper 202 has an abutment portion 2021 and a limiting portion 2022; the abutment portion 2021 can contact the side of the battery cap 401, and is used to push the battery cap 401 to move to a set position, and the limiting portion 2022 is toward the top surface of the battery cap 401, and is used to limit the battery cap 401 from deviating in a direction away from the battery shell opening 403.

[0060] Specifically, if Figure 7 and Figure 8 As shown, the abutment portion 2021 of the secondary scraper 202 can move to the side of the battery cap 401 when the driving member of the first driving member 201 is moved to push the battery cap 401 to move. Figure 9 and Figure 10 The limiting portion 2022 faces the top surface of the battery cap 401, which can prevent the battery cap 401 from shifting upward during the movement of the battery cap 401, further improving the accuracy of pushing the battery cap 401 and the reliability of the mechanism operation.

[0061] Alternatively, as Figures 7 to 10 As shown, the limiting portion 2022 is configured as an inclined surface relative to the top surface of the battery cap 401 , and a relief opening 2023 is provided on the limiting portion 2022 so that the pressing rod 203 can press against the top surface of the battery cap 401 .

[0062] Specifically, in this embodiment, the limiting portion 2022 is set as an inclined surface to ensure that there is a certain gap between the battery cap 401 and the secondary scraper 202, so as to ensure that the battery cap 401 can be pushed to the set position even if it has been offset, thereby improving the reliability of the equipment.

[0063] Alternatively, as Figures 2 to 4 As shown, the primary bending mechanism 100 includes a primary blade assembly and a bending assembly; the primary blade assembly can press against the battery tab 402, so that the bending assembly can press against the battery cap 401 until it tilts to a set angle.

[0064] Specifically, in this embodiment, the primary bending assembly presses against the battery tab 402. The bending assembly can use the contact point of the primary bending assembly as a fulcrum to flip toward the primary bending assembly at a preset angle to achieve a primary bend. After the primary bend, the top surface of the battery cap 401 is at an angle to the vertical direction, allowing for a secondary bending process. The primary bending action facilitates the secondary bending process, ensuring the reliability of the bending process.

[0065] Alternatively, as Figures 2 to 4 As shown, the primary scraper assembly includes a third driving member 101 and a primary scraper 102, and the third driving member 101 is configured to drive the primary scraper 102 along a third direction (X1 direction or X2 direction in the drawing) close to or away from the battery ear 402; the bending assembly includes a fourth driving member 103 and a roller 104, and the fourth driving member 103 can drive the roller 104 along a fourth direction (X2 direction or X1 direction in the drawing) close to or away from the battery cap 401; wherein, the third direction is perpendicular to the direction of the battery shell opening 403, and the fourth direction and the third direction are opposite to each other.

[0066] Specifically, in this embodiment, the primary scraper 102 can be movably arranged on the third bracket 105, so that the third driving member 101 can drive the primary scraper 102 to approach or move away from the battery cap 401 along the third direction, so that the primary scraper 102 can be pressed against the battery tab 402. Figure 4 Left side figure; The roller 104 can be movably arranged on the fourth bracket 106, so that the fourth driving member 103 can drive the roller 104 along the fourth direction to approach or move away from the battery cap 401, so that the roller 104 can use the contact position of the blade 102 and the battery tab 402 as a fulcrum to bend it through the battery cap 401, and the battery cap 401 is at a set angle to the vertical direction, reference Figure 4 Middle right picture.

[0067] In the above embodiment, the initial state of the battery cap 401 is a vertical state, and the blade 102 is directed toward Figure 4 After the left side of the battery is moved to press against the battery tab 402, the roller 104 is driven by the fourth driving member 103 to move toward Figure 4 The roller 104 moves to the right in the middle of the battery cap 401, and acts on the battery cap 401 until it is pressed and tilted to a set angle. During this process, when the roller 104 moves along the third direction, it will roll when it contacts the battery cap 401 due to the friction force, so that when the battery cap 401 is pressed and tilted, damage to the battery cap 401 is reduced, thereby improving the production quality of the product.

[0068] Alternatively, as Figures 2 to 4As shown, the primary scraper 102 is flat, the width of the primary scraper 102 is greater than or equal to the width of the battery tab 402 ; and / or the center of the primary scraper 102 is aligned with the center of the battery tab 402 .

[0069] Specifically, in this embodiment, the primary scraper 102 is designed to be flat, and its width is greater than or equal to the width of the battery tab 402. This ensures that the primary scraper 102 can fully contact the battery tab 402, preventing the tab 402 from shifting when the tab 402 is bent. In addition, aligning the center of the primary scraper 102 with the center of the battery tab 402 ensures that the primary scraper 102 can evenly push the tab 402 without shifting.

[0070] Optionally, as shown in Figure 1 Figure 2 As shown, the width of the roller 104 is greater than or equal to the maximum width of the battery cap 401 .

[0071] Specifically, in this embodiment, the width of the roller 104 is set to be greater than or equal to the maximum width of the battery cap 401 (for example, the cap of the cylindrical battery 400 is circular, and the maximum width is its diameter), so that the roller 104 can fully contact the battery cap 401, preventing the roller 104 from deflecting when pushing the battery cap 401. In addition, in actual applications, such as Figure 4 As shown, the roller 104 needs to be set higher than the primary scraper 102 to smoothly bend the battery tab 402. The primary scraper 102 needs to be set lower than the connection between the battery tab 402 and the battery cap 401 to prevent it from abutting the welding point during bending and affecting the connection quality, thereby improving the product yield.

[0072] Optionally, the set angle is an angle of 70° to 90° with respect to the direction of the battery shell opening.

[0073] Specifically, after the primary bending mechanism 100 bends the battery tab 402, the battery cap 401 is tilted to an angle of 70° to 90° with respect to the direction of the battery shell opening 403, so as to facilitate the secondary scraper assembly to push the battery cap 401 to move, and facilitate the downward pressing assembly to press the battery cap 401 into the battery shell opening 403.

[0074] In practical applications, the larger the angle between this set angle and the orientation of the battery shell opening 403, the closer the battery cap 401 is to the plane of the flat battery shell opening 403, and the more conducive it is for the secondary bending mechanism 200 to work on the battery cap 401. This set angle is preferably 90°. Optionally, it also includes a battery conveyor line 300, which is used to convey the batteries 400 to the primary bending mechanism 100 and the secondary bending mechanism 200.

[0075] Specifically, in this embodiment, the battery conveyor line 300 is used to convey unassembled batteries 400. Figure 1 As shown, the primary bending mechanism 100 and the secondary bending mechanism 200 can be installed at the side of the battery conveyor line 300. The primary bending mechanism 100 can be installed upstream of the secondary bending mechanism 200 to facilitate primary and secondary bending. The battery conveyor line 300 can be implemented using a conveyor belt or other device, and this is not limited to this.

[0076] Alternatively, as Figure 1 As shown, multiple sets of the primary bending mechanism 100 and the secondary bending mechanism 200 are respectively provided, and the multiple sets of the primary bending mechanism 100 and the secondary bending mechanism 200 are sequentially arranged on one side of the battery conveying line 300 .

[0077] Specifically, in this embodiment, multiple sets of primary bending mechanisms 100 and secondary bending mechanisms 200 are provided, enabling the primary bending mechanisms 100 and secondary bending mechanisms 200 to simultaneously bend multiple battery tabs 402 and press the battery cap 401 into the battery shell opening 403, thereby improving the production efficiency of the entire equipment. The primary bending mechanisms 100 are all provided upstream of the secondary bending mechanisms 200.

[0078] According to the second aspect of the present invention, Figure 1 , provides a battery 400 production line, including: the bending equipment of the first aspect.

[0079] Specifically, in this embodiment, the battery production line includes operating equipment for multiple processes. The bending process utilizes the bending equipment provided by the first aspect of the present invention. This equipment can suppress the rebound of the battery tab 402 to a certain extent, allowing the battery cap 401 to be pressed into the edge of the battery shell opening 403, facilitating the subsequent capping process. In actual applications, the capping process can be completed using the capping equipment. The structural configuration of the bending equipment enables the capping equipment to accurately snap the battery cap 401 into the battery shell opening 403, reducing the operating risks of the capping device and lowering the production cost of the entire production line.

[0080] The above embodiments focus on the differences between the various embodiments. As long as the different optimization features between the various embodiments are not contradictory, they can be combined to form a better embodiment. Considering the simplicity of the text, they will not be repeated here.

[0081] Although some specific embodiments of the present invention have been described in detail by way of examples, those skilled in the art will appreciate that the above examples are for illustrative purposes only and are not intended to limit the scope of the present invention. Those skilled in the art will appreciate that modifications may be made to the above embodiments without departing from the scope and spirit of the present invention. The scope of the present invention is defined by the appended claims.

Claims

1. A bending device used in battery production, characterized in that: include: A primary bending mechanism capable of bending the battery tabs and tilting the battery cap to a set angle; A secondary bending mechanism includes a secondary scraper assembly and a pressing assembly. The secondary scraper assembly can move the battery cap to a set position of the battery shell opening so that the pressing assembly can press the battery cap into the battery shell opening.

2. The bending device according to claim 1, characterized in that: The secondary scraper assembly includes a secondary scraper and a first driving member, wherein the first driving member is configured to drive the secondary scraper toward or away from the battery cap along a first direction; The pressing assembly includes a pressing rod and a second driving member, wherein the second driving member is configured to drive the pressing rod to move closer to or away from the battery cap along a second direction; The first direction is consistent with the tilt direction of the battery cap, and the second direction is consistent with the orientation of the battery shell opening.

3. The bending device according to claim 2, characterized in that: The center of the secondary scraper is aligned with the center of the battery cap.

4. The bending device according to claim 2, characterized in that: The secondary scraper has an abutment portion and a limiting portion; The abutting portion can contact the side of the battery cap to push the battery cap to move to the set position, and the limiting portion faces the top surface of the battery cap to limit the battery cap from deviating in a direction away from the battery shell opening.

5. The bending device according to claim 4, characterized in that: The limiting portion is arranged as an inclined surface relative to the top surface of the battery cap, and an escape opening is arranged on the limiting portion, so that the pressing rod can press against the top surface of the battery cap.

6. The bending device according to claim 1, characterized in that: The primary bending mechanism includes a primary blade assembly and a bending assembly; The primary scraper assembly can be pressed against the battery tab, so that the bending assembly can press the battery cap until it tilts to the set angle.

7. The bending device according to claim 6, characterized in that: The primary scraper assembly includes a third driving member and a primary scraper, wherein the third driving member is configured to drive the primary scraper toward or away from the battery tab along a third direction; The bending assembly includes a fourth driving member and a roller, wherein the fourth driving member is capable of driving the roller to move closer to or away from the battery cap along a fourth direction; The third direction is perpendicular to the direction of the battery shell opening, and the fourth direction is opposite to the third direction.

8. The bending device according to claim 7, characterized in that: The primary scraper is flat, and the width of the primary scraper is greater than or equal to the width of the battery tab; and / or, The center of the primary scraper is aligned with the center of the battery tab.

9. The bending device according to claim 7, characterized in that: The width of the roller is greater than or equal to the maximum width of the battery cap.

10. The bending device according to claim 1, characterized in that: The set angle is an angle of 70° to 90° with respect to the direction of the battery shell opening.

11. The bending device according to claim 1, characterized in that: It also includes a battery conveying line, which is used to convey batteries to the primary bending mechanism and the secondary bending mechanism.

12. The bending device according to claim 11, characterized in that: The primary bending mechanism and the secondary bending mechanism are respectively provided in multiple groups, and the multiple groups of the primary bending mechanism and the secondary bending mechanism are sequentially arranged on one side of the battery conveying line.

13. A battery production line, characterized in that: include: The bending device according to any one of claims 1 to 12.

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