Bending device and battery production equipment
By designing a bending device with intersecting directions, using the rolling bending method of the pressure roller and the pressure block, and combining the support and retaining components, the problem of deformation and damage of the tab during the bending process is solved, and the yield and safety of the battery core are improved.
Patent Information
- Application Number
- CN202422824841.6
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-11-19
- Publication Date
- 2025-10-10
- Estimated Expiration
- 2034-11-19
AI Technical Summary
In the 3C manufacturing field, the tabs of the battery core are prone to deformation, crushing or breakage during the bending process, resulting in a decrease in product yield and affecting the stability of battery performance and overall safety.
A bending device is used, which has an intersecting first direction and a second direction, and includes a base, a stand, a pressing assembly and a bending assembly. The rolling bending of the tab is achieved through the coordinated movement of the pressing roller and the pressing block to avoid uneven force on the tab. The device includes a supporting assembly and a retaining assembly to fix and limit the tab to ensure bending accuracy and stability.
The yield rate of tab bending is improved, tab deformation and damage are avoided, and the performance stability and overall safety of the battery are improved.
Smart Images
Figure CN223418070U_ABST
Abstract
Description
Technical Field
[0001] The present application belongs to the field of battery manufacturing technology, and specifically relates to a bending device and battery production equipment. Background Art
[0002] In the 3C manufacturing field, the tabs of the battery core are prone to deformation during the bending process, and may even be crushed or broken, resulting in a decrease in product yield and affecting the stability of battery performance and overall safety. Utility Model Content
[0003] Purpose of the utility model: The embodiment of the present application provides a bending device, which aims to overcome the technical problem that the current bending force position of the tab is fixed, prone to deformation, and even crushing and breakage; another purpose of the embodiment of the present application is to provide a battery production equipment.
[0004] Technical solution: A bending device according to an embodiment of the present application is used to bend the tab, wherein the bending device has a first direction and a second direction intersecting with each other, and includes:
[0005] base,
[0006] A stand, arranged on the base;
[0007] A pressing assembly is provided on the stand, the pressing assembly comprising a first movable member and a pressing block connected to each other, the first movable member being used to drive the pressing block to fix at least a portion of the tab;
[0008] A bending assembly is provided on the stand and arranged along the first direction with the pressing assembly. The bending assembly includes a connected second movable member and a pressure roller. The pressure roller and the pressure block are arranged along the second direction. The pressure roller is rotatably connected to the second movable member. The second movable member is used to drive the pressure roller to move toward the pressure block to drive the tab to bend toward the side of the pressure block close to the pressure roller.
[0009] In some embodiments, the pressing block includes an adjacent first wall and a second wall, the first wall is used to abut the pole ear, the second wall is located on the side of the pressing block close to the pressing roller along the second direction, and there is an angle a between the second wall and the first wall, satisfying a<90°.
[0010] In some embodiments, the bending device further includes a support assembly, wherein the support assembly and the base are arranged along the second direction, and the support assembly includes:
[0011] A support block, wherein the support block and the pressing roller are arranged along the second direction, and the support block and the pressing block are arranged opposite to each other and are used to support the tab.
[0012] In some embodiments, the pressing assembly further comprises a first elastic member, the first elastic member is disposed between the first moving member and the pressing block and connected to the first moving member and the pressing block respectively, and the first elastic member is configured to be elastically deformed by the driving of the first moving member to drive the pressing block.
[0013] In some embodiments, the pressing assembly further comprises a sliding block, the sliding block is located between the first elastic member and the pressing block and connected to the first elastic member and the pressing block respectively, and the sliding block is movably connected to the first moving member.
[0014] The sliding block is configured to be movable relative to the first moving member when the first elastic member is elastically deformed.
[0015] In some embodiments, the pressing assembly further comprises a guide rod, the guide rod extends along the first direction, and the first moving member and the first elastic member are disposed on the guide rod to be guided along the first direction by the guide rod.
[0016] In some embodiments, the stand comprises a mounting surface, the pressing assembly and the bending assembly are disposed on the mounting surface, and the mounting surface has an included angle b with the second direction, and 80°≤b≤85° is satisfied.
[0017] In some embodiments, the bending device has a third direction, and the third direction, the first direction and the second direction intersect with each other.
[0018] The bending device further comprises a holding assembly, the holding assembly is disposed on the stand and arranged along the third direction with the pressing assembly, and the holding assembly comprises a holding block and a third moving member connected to each other, the holding block is disposed on one side of the pressing block along the third direction, and the third moving member is used to drive the holding block to abut against one side of the tab along the third direction.
[0019] In some embodiments, the holding block has a third wall and a fourth wall adjacent to each other, the third wall is located on one side of the holding block along the first direction, and the fourth wall is located on one side of the holding block along the third direction, and the third wall and the fourth wall are capable of contacting the tab respectively.
[0020] The holding assembly further comprises:
[0021] a second elastic member, the second elastic member is located between the third moving member and the holding block and connected to the third moving member and the holding block respectively, and the second elastic member is capable of supporting the holding block along the third direction.
[0022] An embodiment of the present application further discloses a battery production device, comprising the bending device as described in the above embodiment.
[0023] Beneficial effect: The bending device in the embodiment of the present application is used to bend the tab. The bending device has a first direction and a second direction that intersect, and includes: a base, a stand, a pressing assembly and a bending assembly. The stand is arranged on the base; the pressing assembly is arranged on the stand, and the pressing assembly includes a first movable member and a pressure block connected to each other. The first movable member is used to drive the pressure block to fix at least part of the tab; the bending assembly is arranged on the stand and arranged along the first direction with the pressing assembly. The bending assembly includes a second movable member and a pressure roller connected to each other. The pressure roller and the pressure block are arranged along the second direction. The pressure roller is rotatably connected to the second movable member. The second movable member is used to drive the pressure roller to move toward the pressure block to drive the tab to bend toward the side of the pressure block close to the pressure roller. The tab is bent by the pressure roller. When the pressure roller applies pressure, it keeps relative movement with the tab, so that the force position of the tab changes, thereby solving the problem of deformation of the tab due to uneven force, or even crushing or breaking, and improving the bending yield of the core tab.
[0024] A battery production device according to an embodiment of the present application includes the bending device described in the above embodiment, and thus can have all the technical features and effects of the above bending device, which will not be described in detail here. BRIEF DESCRIPTION OF THE DRAWINGS
[0025] In order to more clearly illustrate the technical solutions in the embodiments of the present application, the following briefly introduces the drawings required for use in the description of the embodiments. Obviously, the drawings described below are only some embodiments of the present application. For those skilled in the art, other drawings can be obtained based on these drawings without creative work.
[0026] Figure 1 This is a schematic diagram of the three-dimensional structure of a bending device in an embodiment of the present application;
[0027] Figure 2 This is a schematic diagram of the main structure of a bending device in the embodiment;
[0028] Figure 3 for Figure 2 A partial enlarged schematic diagram of point A in the middle;
[0029] Figure 4 This is a schematic diagram of the positional relationship among a pressing assembly, a bending assembly, a stand, and a base of a bending device according to an embodiment of the present application;
[0030] Figure 5 This is a schematic diagram of the positional relationship between a stand, a pressing assembly, and a holding assembly of a bending device in an embodiment of the present application;
[0031] Figure markings: X, first direction; Y, second direction; 1, base; 2, stand; 3, pressing assembly; 31, first moving member; 32, pressing block; 4, bending assembly; 41, second moving member; 42, pressing roller; 321, first wall; 322, second wall; 5, supporting assembly; 51, supporting block; 33, first elastic member; 34, slider; 35, guide rod; 21, mounting surface; Z, third direction; 6, holding assembly; 61, holding block; 62, third moving member; 611, third wall; 612, fourth wall; 63, second elastic member. DETAILED DESCRIPTION
[0032] The following will be combined with the accompanying drawings in the embodiments of the present application to clearly and completely describe the technical solutions in the embodiments of the present application. Obviously, the embodiments described are only part of the embodiments of the present application, not all of the embodiments. Based on the embodiments in the present application, all other embodiments obtained by those skilled in the art without making any creative work are within the scope of protection of this application.
[0033] In the description of the present application, it should be understood that the terms "upper", "lower", "inside", "outside", etc. indicate orientations or positional relationships 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, rather than indicating or implying that the device or component referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as a limitation on the present application. In the description of the present application, "multiple" means two or more, and at least one means one, two or more, unless otherwise clearly defined. Terms such as "first", "second", and "third" are simply names for parts or embodiments for the convenience of description, and do not imply that there is an order of importance between parts or embodiments.
[0034] It should also be noted that in the drawings of the present application, the arrow marked X indicates the first direction or the opposite direction, the arrow marked Y indicates the second direction or the opposite direction, and the arrow marked Z indicates the third direction or the opposite direction. In the description of the present application, the first direction, the second direction and the third direction are introduced in order to more clearly define the structure and relative position relationship of each component in the bending device and the battery production equipment.
[0035] In the related art, in the 3C manufacturing field, one of the key technologies for processing the tabs of battery roll cores is to use upper and lower shaping blocks to extrude the tabs to achieve precise bending. However, this technology faces a significant problem: during the extrusion process, the tabs are easily deformed due to uneven force, and may even be crushed or broken, resulting in a decrease in product yield and affecting the stability and overall safety of battery performance. This technical defect reveals the limitations of existing processes in material stress control and precision, and has become a key bottleneck restricting automated production efficiency and battery quality. The solution of this application changes the form of traditional extrusion bending, incorporates a rolling bending method into the design, improves the yield of tab bending, meets battery assembly requirements, and improves the stability and overall safety of battery performance.
[0036] In view of this, an embodiment of the present application provides a bending device, aiming to solve at least one of the above-mentioned technical problems.
[0037] Please combine Figure 1 、 Figure 2 and Figure 4 As shown, a bending device in an embodiment of the present application is used to bend the pole ear, and the bending device has an intersecting first direction X and a second direction Y, including: a base 1, a stand 2, a pressing assembly 3 and a bending assembly 4; wherein the stand 2 is arranged on the base 1, for providing an installation position for the pressing assembly 3 and the bending assembly 4; the pressing assembly 3 is arranged on the stand 2, and the pressing assembly 3 includes a connected first movable member 31 and a pressure block 32, and the first movable member 31 is used to drive the pressure block 32 to fix at least part of the pole ear; the bending assembly 4 is arranged on the stand 2 and is arranged along the first direction X with the pressing assembly 3, the bending assembly 4 includes a connected second movable member 41 and a pressure roller 42, the pressure roller 42 and the pressure block 32 are arranged along the second direction Y, the pressure roller 42 is rotatably connected to the second movable member 41, and the second movable member 41 is used to drive the pressure roller 42 to move toward the pressure block 32, so as to drive the pole ear to bend toward the side of the pressure block 32 close to the pressure roller 42.
[0038] It should be understood that during the tab processing, the tab of the battery roll core is placed under the pressing block 32. The tab can be supported by an external mechanism or other means, and the first movable member 31 drives the pressing block 32 to hold part of the tab to ensure that the tab will not be displaced during the bending process; the second driving member is used to drive the pressure roller 42 to move toward the pressing block 32, and drive the tab to bend toward the side of the pressing block 32 close to the pressure roller 42; during the bending process, the pressure roller 42 maintains contact with the tab. At the same time, when the pressure roller 42 applies pressure, the pressure roller 42 rotates and maintains relative movement with the tab, so that the contact surface between the pressure roller 42 and the tab changes, thereby avoiding the problem of uneven force on the tab and deformation due to the fixed contact position with the tab, or even excessive pressure at the contact position, causing the tab to be crushed or broken, thereby effectively improving the tab bending yield.
[0039] See also Figure 3 As shown, in some embodiments, the pressing block 32 includes a first wall 321 and a second wall 322 adjacent to each other. The first wall 321 is used to abut the tab. The second wall 322 is located on the side of the pressing block 32 closer to the pressing roller 42 along the second direction Y. The second wall 322 and the first wall 321 form an angle a, satisfying a < 90°. By arranging the first wall 321 and the second wall 322 at an angle less than 90°, the first wall 321 can provide a certain positioning effect on the tab during the bending process, preventing the tab located below the pressing block 32 from being displaced by the roller, thereby improving the accuracy of the bending position.
[0040] See also Figure 1 and Figure 2 As shown, in some embodiments, the bending device further includes a support assembly 5, and the support assembly 5 and the base 1 are arranged along the second direction Y, wherein the base 1 is an adjustable base 1, which can drive the stand 2 along the second direction Y to change the spacing between the stand 2 and the support assembly 5, so as to facilitate bending of tabs of different sizes. The support assembly 5 includes a support block 51, and the support block 51 and the pressure roller 42 are arranged along the second direction Y. The support block 51 is arranged opposite to the pressure block 32 to support the tab. At the same time, during the bending process, the pressure block 32 and the support block 51 can jointly fix the tab, and the support surface of the support block 51 can support the tab edge of the battery roll to prevent collapse. In some embodiments, the support assembly 5 further includes a fourth movable member, which drives the support block 51 to move in the vertical direction to adjust the height of the support surface of the support block 51.
[0041] See also Figure 4 As shown, in some embodiments, the pressing assembly 3 further includes a first elastic member 33, which is disposed between the first movable member 31 and the pressing block 32 and is respectively connected to the first movable member 31 and the pressing block 32. The first elastic member 33 is configured to be elastically deformed by the drive of the first movable member 31 to drive the pressing block 32. The first elastic member 33 can be a spring. By arranging the first elastic member 33 between the pressing block 32 and the first movable member 31 and utilizing the elastic deformation ability of the first elastic member 33, when the first movable member 31 drives the pressing block 32 to press the tab, the first elastic member 33 has a deformation space, so that the relative position of the pressing block 32 and the tab can be adjusted to achieve the initial positioning of the tab. At the same time, the first elastic member 33 can provide a pre-tightening force for the tab to avoid excessive pressure on the pressing block 32, hard contact with the tab, and damage to the tab, thereby improving safety and positioning accuracy.
[0042] See also Figure 4As shown, in some embodiments, the pressing assembly 3 further includes a slider 34, the slider 34 is located between the first elastic member 33 and the pressure block 32, and is respectively connected to the first elastic member 33 and the pressure block 32, and the slider 34 is movably connected to the first movable member 31; the slider 34 is configured to be able to move relative to the first movable member 31 when the first elastic member 33 generates elastic deformation. It should be understood that the slider 34 and the first movable member 31 are in sliding cooperation. Specifically, the slider 34 is provided with a slide groove on one side facing the first movable member 31, and the first movable member 31 is provided with a slide rail that cooperates with the slide groove; conversely, a protrusion is provided on the slider 34, and a slide groove is also provided on the first movable member 31, which will not be repeated here.
[0043] Through the guiding cooperation of the slider 34 and the first movable member 31, the moving trajectory of the pressing block 32 can be ensured, so that the pressing block 32 applies uniform force to the tab, avoiding non-elastic deformation of the first elastic member 33, uneven contact between the pressing block 32 and the tab, and causing tab instability.
[0044] See also Figure 4 As shown, in some embodiments, the pressing assembly 3 further includes a guide rod 35, which extends along the first direction X. The first movable member 31 and the first elastic member 33 are disposed on the guide rod 35 so as to be guided along the first direction X by the guide rod 35. The first movable member 31 includes a driving unit and a mounting plate fixed to the movable end of the driving unit. The mounting plate and the first elastic member 33 are movably penetrated by the guide rod 35, so that the first movable member 31 drives the first elastic member 33 to elastically deform along the first direction X, thereby preventing uneven force on the first elastic member 33 and abnormal deformation, which would affect the fixation of the pressing block 32 to the tab. At the same time, the stability and service life of the first elastic member 33 are improved.
[0045] See also Figure 2 As shown, in some embodiments, the stand 2 includes a mounting surface 21, and the pressing assembly 3 and the bending assembly 4 are both arranged on the mounting surface 21. There is an angle b between the mounting surface 21 and the second direction Y, satisfying 80°≤b≤85°. By setting an angle between the arrangement direction of the pressing assembly 3 and the bending assembly 4 and the second direction Y, the bent tab is located above the battery roll core. During the assembly line bending production process, the battery roll core is transported to the bending station by a carrier, and the tab is fixed to the bending station by the pressing assembly 3. After the bending is completed, the tab is located above the battery roll core, which is convenient for the shaping process of the bent tab. At the same time, it is convenient for the subsequent process of the tab to be performed, which is convenient for operation.
[0046] See also Figure 5As shown, in some embodiments, the bending device has a third direction Z, and the third direction Z, the first direction X, and the second direction Y intersect in pairs; the bending device also includes a holding assembly 6, which is provided on the stand 2 and arranged along the third direction Z with the pressing assembly 3. The holding assembly 6 includes a connected holding block 61 and a third movable member 62. The holding block 61 is provided on one side of the pressing block 32 along the third direction Z, and the third movable member 62 is used to drive the holding block 61 to abut against the side of the tab along the third direction Z. The holding block 61 is used to fix the tab along the third direction Z to prevent the tab from shifting during the bending process. At the same time, the flatness of the tab along the third direction Z is ensured to meet the battery assembly accuracy.
[0047] See also Figure 5 As shown, in some embodiments, the retaining block 61 has adjacent third walls 611 and fourth walls 612, the third wall 611 is located on one side of the retaining block 61 along the first direction X, and the fourth wall 612 is located on one side of the retaining block 61 along the third direction Z, and the third wall 611 and the fourth wall 612 can respectively contact the tabs; the retaining assembly 6 also includes: a second elastic member 63, the second elastic member 63 is located between the third movable member 62 and the retaining block 61, and respectively connects the third movable member 62 and the retaining block 61, and the second elastic member 63 can support the retaining block 61 along the third direction Z.
[0048] The third wall 611 and the fourth wall 612 respectively contact one side of the tab along the third direction Z. Specifically, the third wall 611 can limit the edge of the surface of the tab along the first direction X to avoid displacement or deformation of the area during the bending of the tab; the fourth wall 612 can abut the surface of the tab along the thickness direction to form a limiting support, thereby ensuring the flatness of one side of the tab along the third direction Z to meet the assembly requirements of the battery; at the same time, by arranging a second elastic member 63 between the third movable member 62 and the retaining block 61, the second elastic member 63 can provide elastic support for the retaining block 61 along the third direction Z, providing support and limitation for the tab in the third direction Z while avoiding hard contact between the retaining block 61 and the tab, thereby damaging the tab.
[0049] It should be understood that in some embodiments, the first movable member 31, the second movable member 41, the third movable member 62, and the fourth movable member can all use cylinders as power sources. The present application also discloses a battery production device, including a bending device as described in the above embodiment. Because the positive and negative tabs need to be operated simultaneously in the scheme, the components in contact with the tabs in this scheme can be made of zirconium oxide, including the pressure roller 42, the pressure block 32, the support block 51, and the retaining block 61; other insulating materials are acceptable.
[0050] In the above embodiments, the description of each embodiment has its own focus. For parts that are not described in detail in a certain embodiment, reference can be made to the relevant descriptions of other embodiments.
[0051] The above is a detailed introduction to the bending device and battery production equipment provided in the embodiments of the present application, and specific examples are used to illustrate the principles and implementation methods of the present application. The description of the above embodiments is only used to help understand the technical solutions and core ideas of the present application; ordinary technicians in this field should understand that they can still modify the technical solutions recorded in the aforementioned embodiments, or replace some of the technical features therein with equivalents; and these modifications or replacements do not cause the essence of the corresponding technical solutions to deviate from the scope of the technical solutions of the embodiments of the present application.
Claims
1. A bending device, characterized in that: For bending a tab, the bending device has a first direction (X) and a second direction (Y) intersecting each other, comprising: Base (1), A stand (2) is provided on the base (1); A pressing assembly (3) is arranged on the stand (2), and the pressing assembly (3) includes a first movable member (31) and a pressing block (32) connected to each other, wherein the first movable member (31) is used to drive the pressing block (32) to fix at least a portion of the tab; A bending assembly (4) is provided on the stand (2) and is arranged along the first direction (X) with the pressing assembly (3). The bending assembly (4) includes a second movable member (41) and a pressure roller (42) connected to each other. The pressure roller (42) and the pressure block (32) are arranged along the second direction (Y). The pressure roller (42) is rotationally connected to the second movable member (41). The second movable member (41) is used to drive the pressure roller (42) to move toward the pressure block (32) to drive the tab to bend toward the side of the pressure block (32) close to the pressure roller (42).
2. The bending device according to claim 1, characterized in that The pressing block (32) includes an adjacent first wall (321) and a second wall (322), wherein the first wall (321) is used to abut the tab, and the second wall (322) is located on a side of the pressing block (32) close to the pressing roller (42) along the second direction (Y), and an angle a is formed between the second wall (322) and the first wall (321), satisfying a<90°.
3. The bending device according to claim 1, characterized in that The bending device further comprises a support assembly (5), wherein the support assembly (5) and the base (1) are arranged along the second direction (Y), and the support assembly (5) comprises: A support block (51), wherein the support block (51) and the pressing roller (42) are arranged along the second direction (Y), and the support block (51) and the pressing block (32) are arranged opposite to each other and are used to support the tab.
4. The bending device according to claim 1, characterized in that The pressing assembly (3) further includes a first elastic member (33), which is disposed between the first movable member (31) and the pressing block (32), and respectively connects the first movable member (31) and the pressing block (32). The first elastic member (33) is configured to be driven by the first movable member (31) to generate elastic deformation so as to drive the pressing block (32).
5. The bending device according to claim 4, characterized in that: The pressing assembly (3) further includes a slider (34), the slider (34) being located between the first elastic member (33) and the pressing block (32), and being connected to the first elastic member (33) and the pressing block (32) respectively, and the slider (34) being movably connected to the first moving member (31); The slider (34) is configured to be movable relative to the first moving member (31) when the first elastic member (33) generates elastic deformation.
6. The bending device according to claim 4 or 5, characterized in that: The pressing assembly (3) further includes a guide rod (35), the guide rod (35) extending along the first direction (X), the first moving member (31) and the first elastic member (33) being arranged on the guide rod (35) to guide along the first direction (X) through the guide rod (35).
7. The bending device according to claim 1, characterized in that: The stand (2) includes a mounting surface (21), the pressing assembly (3) and the bending assembly (4) are both arranged on the mounting surface (21), and an angle b is formed between the mounting surface (21) and the second direction (Y), satisfying 80°≤b≤85°.
8. The bending device according to claim 1, characterized in that: The bending device has a third direction (Z), and the third direction (Z), the first direction (X) and the second direction (Y) intersect each other; The bending device also includes a holding assembly (6), which is arranged on the stand (2) and arranged along the third direction (Z) with the pressing assembly (3), and the holding assembly (6) includes a connected holding block (61) and a third movable member (62), the holding block (61) is arranged on one side of the pressing block (32) along the third direction (Z), and the third movable member (62) is used to drive the holding block (61) to abut against one side of the pole ear along the third direction (Z).
9. The bending device according to claim 8, characterized in that: The holding block (61) has a third wall (611) and a fourth wall (612) adjacent to each other, the third wall (611) being located on one side of the holding block (61) along the first direction (X), and the fourth wall (612) being located on one side of the holding block (61) along the third direction (Z), and the third wall (611) and the fourth wall (612) being capable of contacting the tabs respectively; The retaining assembly (6) further comprises: A second elastic member (63), the second elastic member (63) is located between the third movable member (62) and the retaining block (61), and is respectively connected to the third movable member (62) and the retaining block (61), and the second elastic member (63) is capable of supporting the retaining block (61) along the third direction (Z).
10. A battery production device, characterized in that: The invention comprises a bending device as claimed in any one of claims 1 to 9.