Battery cell tab rubberizing device
By using a combination of columnar inverter head and flexible contacts in the battery cell ear glue device, the problem that the arc surface is easily fractured during the pasting process is solved, and a higher quality battery ear sticking effect is achieved.
Patent Information
- Application Number
- CN202421752356.6
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-07-23
- Publication Date
- 2025-06-10
- Estimated Expiration
- 2034-07-23
AI Technical Summary
When pasting glue paper on the front of the battery cell ear, the arcuate surface is easily fractured by physical impact from the rigid indenter head, causing cracking of the electrode ear and affecting the quality of the battery cell.
The battery-cell ear glue device using a cylindrical first indenter and a flexible contact is adopted. The flexible contact is arranged at the junction position between the contact pressure surface of the indenter and the cylinder surface, so that it can adaptively deform with the shape of the arc surface to avoid the arc surface being fractured.
It effectively prevents the arc surface from being fractured, avoids damage to the battery cell ears, and improves the quality and adhesion effect of the battery cell.
Smart Images
Figure CN222966177U_ABST
Abstract
Description
Technical Field
[0001] The utility model belongs to the technical field of batteries, and particularly relates to a core tab sticking device. Background Art
[0002] During the production of power battery cores, in order to solve the problem of short circuit caused by the contact between the tabs of the core and the top cover after the cores are combined, it is necessary to stick adhesive tapes on the front and back sides of the tabs of the core, where the front side is Z-shaped and the back side is linear.
[0003] In the prior art, since the front side of the tab is Z-shaped, that is, a right-angle surface will be formed at the connection between the tab and the core body. In order to make the connection between the tab and the core body more firm, an arc surface is formed at the right-angle position by using an adhesive to increase the connection area. The sticking press head of the sticking mechanism is a rigid press head. When sticking the adhesive tape on the front side of the tab, first use the press head to adsorb the adhesive tape, and then move the press head towards the tab until the press head tightly presses the tab and the adhesive tape is closely attached to the front side of the tab, and then the press head is separated from the tab.
[0004] When using the above-mentioned sticking mechanism to stick the adhesive tape on the front side of the tab of the core, when the rigid press head presses down the adhesive tape and makes the adhesive tape closely fit with the front side of the tab, the arc surface at the connection between the tab and the core body will be physically rigidly impacted by the rigid press head, which will cause the arc surface to be cracked, and then cause the tab to crack, so it will affect the quality of the core. Summary of the Utility Model
[0005] An object of an embodiment of the utility model is to provide a core tab sticking device for a battery cell, which can solve the problem that when sticking an adhesive tape on the front side of the tab of a battery cell in the related art, the arc surface at the connection between the tab and the core body is physically rigidly impacted by a rigid press head and cracked.
[0006] In order to solve the above technical problems, the utility model is implemented as follows:
[0007] An embodiment of the utility model provides a core tab sticking device for a battery cell, which includes: a first press head, a flexible contact head and a driving mechanism. The first press head is a columnar press head. The flexible contact head is arranged at the intersection position of the contact surface of the first press head and the columnar surface of the first press head. The first press head is fixedly connected to the driving mechanism.
[0008] Optionally, a receiving groove is arranged at the intersection position of the contact surface of the first press head and the columnar surface of the first press head, and the flexible contact head is arranged in the receiving groove.
[0009] Optionally, a fillet is arranged at the convex part of the flexible contact head.
[0010] Optionally, the ratio M of the width of the flexible contact to the width of the contact surface of the first indenter ranges from 1 / 4 ≤ M ≤ 1 / 3.
[0011] Optionally, the flexible contact includes a contact head and an elastic member, and the elastic member is fixedly connected to the first indenter and the contact head.
[0012] Optionally, the elastic member includes a compression spring, and both ends of the compression spring are fixedly connected to the first indenter and the contact head respectively;
[0013] And / or, the elastic member includes a torsion spring, and the torsion spring is clamped between the first indenter and the contact head.
[0014] Optionally, the cell pole ear gluing device further includes a second indenter and a sliding mechanism. The sliding mechanism is arranged between the cylindrical surface of the first indenter and the surface of the second indenter and slidably connects the first indenter and the second indenter. The sliding direction of the sliding mechanism is parallel to the axis of the first indenter, and the sliding mechanism and the receiving groove are on the same side of the cylindrical surface of the first indenter.
[0015] Optionally, the sliding mechanism is elastic along the sliding direction.
[0016] Optionally, the contact end of the second indenter includes an elastic contact head, and the elastic contact head expands and contracts along the sliding direction.
[0017] Optionally, the cell pole ear gluing device further includes a suction device, and suction nozzles are arranged on the contact surfaces of the first indenter and / or the second indenter, and the suction nozzles are communicated with the suction device.
[0018] In the embodiment of the present application, since the first indenter is fixedly connected to the driving mechanism, the first indenter can move towards the cell pole ear under the drive of the driving mechanism and press the adhesive tape tightly, and then the adhesive tape is closely attached to the surface of the cell pole ear. Then, since the first indenter is a columnar indenter and the flexible contact is arranged at the intersection of the contact surface of the first indenter and the cylindrical surface of the first indenter, when the first indenter contacts the surface of the cell pole ear, it is the flexible contact that directly contacts the arc surface at the connection between the cell pole ear and the cell body. The flexible contact can deform adaptively according to the shape of the arc surface, thereby preventing the adhesive strip with the arc surface from being cracked, so that the cell pole ear can be prevented from being cracked and the quality of the cell is improved.
[0019] Among them, the contact surface of the first indenter is a plane. When the contact surface of the first indenter contacts the cell pole ear, the position where the flexible contact is located just corresponds to the position of the arc surface at the connection between the cell pole ear and the cell body, that is, when the contact surface of the first indenter contacts the cell pole ear, the flexible contact just abuts against the arc surface.
[0020] The above description is only an overview of the technical solution of the present utility model. In order to better understand the technical means of the present utility model, it can be implemented according to the content of the specification. And in order to make the above and other purposes, features and advantages of the present utility model more obvious and understandable, the following specifically describes the embodiments of the present utility model. Brief Description of the Drawings
[0021] The above and / or additional aspects and advantages of the present utility model will become obvious and easy to understand from the description of the embodiments in conjunction with the following drawings, wherein:
[0022] Figure 1 is a schematic structural diagram of a cell tab gluing device provided by an embodiment of the present utility model;
[0023] Figure 2 is Figure 1 a partial enlarged view of the K position in
[0024] Figure 3 is Figure 1 the corresponding three-dimensional structural diagram of the cell tab gluing device in
[0025] Figure 4 is Figure 1 the structural diagram of the sliding mechanism in
[0026] Description of the Reference Numerals in the Drawings:
[0027] 1 - First pressing head, 12 - Accommodating groove, 2 - Flexible contact, 21 - Rounded corner, 22 - Touching pressing head, 23 - Elastic member, 231 - Compression spring, 3 - Driving mechanism, 4 - Second pressing head, 41 - Elastic touching pressing head, 5 - Sliding mechanism, 51 - Slide block, 52 - Slide groove, 53 - Spring, 6 - Suction device, 7 - Suction nozzle, 100 - Cell tab gluing device, A - Cell tab, B - Cell body, C - Arc surface, D - Adhesive tape, E - First contact surface, F - Second contact surface, G - Third contact surface. Detailed Embodiments
[0028] Next, the technical solutions in the embodiments of the present utility model will be clearly and completely described in conjunction with the drawings in the embodiments of the present utility model. Obviously, the described embodiments are part of the embodiments of the present utility model, rather than all of the embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative efforts shall fall within the protection scope of the present utility model.
[0029] The terms "first", "second", etc. in the specification and claims of the present utility model are used to distinguish similar objects, and are not used to describe a specific order or sequence. It should be understood that the data used in this way can be interchangeable under appropriate circumstances, so that the embodiments of the utility model can be implemented in an order other than those illustrated or described here, and the objects distinguished by "first", "second", etc. are generally of one type, and the number of objects is not limited. For example, the first object can be one or more. In addition, "and / or" in the specification and claims represents at least one of the connected objects, and the character " / " generally indicates that the objects associated with each other are in an "or" relationship.
[0030] The battery cell tab gluing device 100 provided in the embodiment of the utility model will be described in detail below with reference to the accompanying drawings through specific embodiments and application scenarios.
[0031] Figure 1 1 is a schematic structural diagram of a battery cell tab gluing device 100 provided in an embodiment of the utility model. Figure 2 yes Figure 1 A partial enlarged view of point K in the middle.
[0032] See also Figure 1 and Figure 2 The battery cell tab glue sticking device 100 comprises: a first pressing head 1, a flexible contact 2 and a driving mechanism 3. The first pressing head 1 is a columnar pressing head. The flexible contact 2 is arranged at the junction of the contact pressing surface of the first pressing head 1 and the cylindrical surface of the first pressing head 1. The first pressing head 1 is fixedly connected to the driving mechanism 3.
[0033] In the embodiment of the present application, since the first pressing head 1 is fixedly connected to the driving mechanism 3, under the drive of the driving mechanism 3, the first pressing head 1 can move toward the direction of the battery cell tab A and press the adhesive tape D, thereby pressing the adhesive tape D against the surface of the battery cell tab A. Next, since the first pressing head 1 is a columnar pressing head and the flexible contact 2 is arranged at the junction of the contact and pressure surface of the first pressing head 1 and the cylindrical surface of the first pressing head 1, when the first pressing head 1 contacts the surface of the battery cell tab A, the flexible contact 2 directly contacts the arc surface C at the connection between the battery cell tab A and the battery cell body B. The flexible contact 2 can deform adaptively with the shape of the arc surface C, thereby preventing the adhesive strip with the arc surface C from being crushed, thereby preventing the battery cell tab A from being crushed, thereby improving the quality of the battery cell.
[0034] Among them, the contact surface of the above-mentioned first pressure head 1 is a plane. When the contact surface of the first pressure head 1 contacts the battery cell pole ear A, the position of the flexible contact 2 just corresponds to the position of the arc surface C at the connection between the battery cell pole ear A and the battery cell body B, that is, when the contact surface of the first pressure head 1 contacts the battery cell pole ear A, the flexible contact 2 just abuts against the arc surface C through the adhesive tape D.
[0035] It should be noted that the above flexible contact 2 can be an elastic block made of an elastic material, or a deformable flexible structure composed of multiple components. The embodiments of the present application do not limit this.
[0036] It should also be noted that the above driving mechanism 3 refers to a mechanical structure for driving the movement of the first indenter 1, which can be a pneumatic cylinder, a hydraulic cylinder or a gear structure. The embodiments of the present application do not limit this. When the driving mechanism 3 is a pneumatic cylinder, the cylinder body of the pneumatic cylinder is fixed, and the piston of the pneumatic cylinder is fixedly connected to the first indenter 1. In this way, when the piston moves relative to the cylinder body, it can drive the first indenter 1 to move in the same direction, and then can touch and press the adhesive tape D to complete the gluing work.
[0037] It should also be noted that the shape of the above columnar indenter can be a square column, a cylindrical column or a prism. The embodiments of the present application do not limit this.
[0038] See Figure 1 and Figure 3 , when using the above battery cell tab gluing device 100 to paste the adhesive tape D on the front surface of the battery cell tab A, first, the contact surface of the first indenter 1 adsorbs the adhesive tape D, and then the driving mechanism 3 is turned on. The driving mechanism 3 can drive the first indenter 1 to move towards the battery cell tab A. Then, when the adhesive tape D contacts the surface of the battery cell tab A, the first indenter 1 continues to move until the adhesive tape D is closely attached to the surface of the battery cell tab A. At this time, the flexible contact 2 abuts against the bonding strip with the arc surface C, and the flexible contact 2 can adaptively deform according to the shape of the arc surface C, thereby preventing the bonding strip with the arc surface C from being cracked, so that the battery cell tab A can be prevented from being cracked and the quality of the battery cell is improved.
[0039] Optionally, in some embodiments, see Figure 1 , Figure 2 and Figure 3 , a receiving groove 12 is provided at the intersection of the contact surface of the first indenter 1 and the cylindrical surface of the first indenter 1, and the flexible contact 2 is arranged in the receiving groove 12. In this way, the flexible contact 2 will not protrude entirely from the surface of the first indenter 1. Compared with the solution where the receiving groove 12 is not provided on the first indenter 1, the overall structure shape formed by the first indenter 1 and the flexible contact 2 is more regular. Then, when the first indenter 1 contacts the surface of the battery cell tab A, it can make the first indenter 1 contact the battery cell tab A more closely, thereby improving the pasting effect of the adhesive tape D. In addition, arranging the flexible contact 2 in the receiving groove 12 can protect the flexible contact 2 compared with the solution where the receiving groove 12 is not provided on the first indenter 1, and can also reduce the probability of the flexible contact 2 falling off, improving the service life of the battery cell tab gluing device 100.
[0040] It should be noted that the cross-sectional shape of the above-mentioned receiving groove 12 can be rectangular, arc-shaped or polygonal, or other shapes, and the embodiments of the present application do not limit this.
[0041] It should also be noted that the receiving groove 12 can be formed by die casting, or can be formed by cutting and digging after the first indenter 1 is formed.
[0042] Optionally, in some embodiments, refer to Figure 1 、 Figure 2 and Figure 3 , a fillet 21 is provided at the convex part of the flexible contact 2. In this way, when the flexible contact 2 abuts against the arc surface C at the connection between the battery cell tab A and the battery cell body B, the shape of the fillet 21 can just be adapted to the arc surface C, thereby reducing the impact of the first indenter 1 on the arc surface C, further ensuring that the adhesive strip on the arc surface C is not crushed, so that the battery cell tab A can be further prevented from being crushed, and the quality of the battery cell is improved.
[0043] It should be noted that the radius of the above-mentioned fillet 21 is determined according to the radius of the arc surface C. For different battery cell tabs A, the radius of the arc surface C is different, and the radius of the fillet 21 is different.
[0044] Optionally, in some embodiments, refer to Figure 1 、 Figure 2 and Figure 3 , the ratio M of the width of the flexible contact 2 to the width of the contact surface of the first indenter 1 ranges from: 1 / 4 ≤ M ≤ 1 / 3.
[0045] In the process of designing the sizes of the first indenter 1 and the flexible contact 2, through repeated tests and verifications, the final conclusion is that when the ratio M of the width of the flexible contact 2 to the width of the contact surface of the first indenter 1 ranges from 1 / 4 ≤ M ≤ 1 / 3, at this time, while ensuring that the sticking effect of the adhesive tape D on the surface of the battery cell tab A meets the requirements, the arc surface C at the connection between the battery cell tab A and the battery cell body B can be protected to the greatest extent from being crushed. The value of M can be 1 / 4, 7 / 24 or 1 / 3, or can take any value within the corresponding range of M above, and the embodiments of the present application do not limit this.
[0046] It should be noted that the width of the above-mentioned flexible contact 2 refers to the width of the flexible contact 2 along the direction of the contact surface.
[0047] Optionally, in some embodiments, refer to Figure 1 、 Figure 2 and Figure 3, the flexible contact 2 includes a contact head 22 and an elastic member 23. The elastic member 23 is fixedly connected to the first pressing head 1 and the contact head 22. In this way, when the flexible contact 2 abuts against the arc surface C, first the contact head 22 abuts against the arc surface C, and then the contact head 22 displaces relative to the first pressing head 1, causing the elastic member 23 to be compressed, thus playing a buffering role. After the work of pasting the adhesive tape D is completed, the contact head 22 separates from the arc surface C, and at this time the elastic member 23 returns to its original length. In this process, through the process of the elastic member 23 being compressed and restored to its deformed state, the entire flexible contact 2 can adaptively deform along with the arc surface C, thus ensuring that the arc surface C is not cracked, and therefore ensuring that the battery cell is not cracked.
[0048] Among them, the contact head 22 can be a rigid pressing head or a flexible pressing head. When it is a flexible pressing head, its material can be rubber or foam, or other elastic materials, and the embodiments of the present application do not limit this.
[0049] Optionally, in some embodiments, refer to Figure 1 , Figure 2 and Figure 3 , the elastic member 23 includes a compression spring 231. The two ends of the compression spring 231 are respectively fixedly connected to the first pressing head 1 and the contact head 22. Specifically, a rotating shaft is provided on the groove wall of the accommodating groove 12. One end of the contact head 22 is provided with a connection hole, and the rotating shaft passes through the connection hole, and the contact head 22 can rotate around the rotating shaft. The other end of the contact head 22 is fixedly connected to the compression spring 231. Since the length of the compression spring 231 can change, it can drive the contact head 22 to rotate around the rotating shaft, thus improving the deformation ability of the flexible contact 2.
[0050] In addition, a torsion spring can be used instead of the compression spring 231, and the installation position of the torsion spring is the same as that of the compression spring 231. Since the torsion spring can provide a rotational torque when the contact head 22 rotates relative to the first pressing head 1, it can also drive the contact head 22 to rotate around the rotating shaft, so it can also improve the deformation ability of the flexible contact 2.
[0051] In addition, since the compression spring 231 and the torsion spring are common elastic elements, the installation and disassembly are relatively convenient, so the production efficiency of the battery cell tab gluing device 100 can be improved. In addition, the manufacturing technology of the compression spring 231 and the torsion spring is relatively mature, so the production cost of the battery cell tab gluing device 100 can be reduced.
[0052] Optionally, in some embodiments, refer to Figure 1 , Figure 2 and Figure 3, the battery cell tab gluing device 100 further includes a second pressing head 4 and a sliding mechanism 5. The sliding mechanism 5 is arranged between the cylindrical surface of the first pressing head 1 and the surface of the second pressing head 4 and slidably connects the first pressing head 1 and the second pressing head 4. The sliding direction of the sliding mechanism 5 is parallel to the axis of the first pressing head 1, and the sliding mechanism 5 and the receiving groove 12 are on the same side of the cylindrical surface of the first pressing head 1.
[0053] In the embodiment of the present application, since the battery cell tab gluing device 100 includes the first pressing head 1 and the second pressing head 4, two gluing surfaces can be simultaneously pressed, and one of the gluing surfaces is the surface of the tab. Then, since the battery cell tab gluing device 100 includes the sliding mechanism 5, and the sliding mechanism 5 is arranged between the cylindrical surface of the first pressing head 1 and the surface of the second pressing head 4 and slidably connects the first pressing head 1 and the second pressing head 4, the sliding direction of the sliding mechanism 5 is parallel to the axis of the first pressing head 1. In this way, the second pressing head 4 can slide relative to the first pressing head 1 along the axis direction of the first pressing head 1. Furthermore, there can be a certain distance between the pressing surface of the first pressing head 1 and the pressing surface of the second pressing head 4. Therefore, the battery cell tab gluing device 100 can be used to simultaneously paste the adhesive tape D on two contact surfaces with a certain distance.
[0054] Then, since the sliding mechanism 5 and the receiving groove 12 are on the same side of the cylindrical surface of the first pressing head 1. In this way, the battery cell tab gluing device 100 can be matched with the front surface of the Z-shaped battery cell tab A in the related art. When both the first pressing head 1 and the second pressing head 4 are in contact with the front surface of the battery cell tab A, the flexible contact 2 in the receiving groove 12 just abuts against the arc surface C at the right-angle position. Therefore, the flexible contact 2 can adaptively deform along with the arc surface C, and further ensure that the arc surface C is not cracked, so that the battery cell is not cracked.
[0055] See Figure 1 , the Z-shaped front surface of the battery cell tab A is divided into a first contact surface E, a second contact surface F and a third contact surface G. An arc surface C formed by an adhesive is arranged at the intersection position of the first contact surface E and the third contact surface G. When using the above-mentioned battery cell tab gluing device 100 to paste the adhesive tape D on the front surface of the battery cell tab A, the pressing surface of the first pressing head 1 abuts against the first contact surface E, and the pressing surface of the second pressing head 4 abuts against the second contact surface F. At this time, the flexible contact 2 in the receiving groove 12 just can abut against the arc surface.
[0056] Optionally, in some embodiments, see Figure 1 , Figure 2 and Figure 3, the sliding mechanism 5 has elasticity along the sliding direction. When the sliding mechanism 5 does not undergo elastic deformation, the contact surfaces of the first indenter 1 and the second indenter 4 are flush. When the second indenter 4 slides relative to the first indenter 1, the sliding mechanism 5 undergoes elastic deformation and can apply a force to the second indenter 4 to hinder the relative sliding.
[0057] Thus, when the contact surface of the first indenter 1 abuts against the first contact surface E and the contact surface of the second indenter 4 abuts against the second contact surface F, the second indenter 4 slides relative to the first indenter 1 in a direction away from the battery cell tab A. Therefore, the sliding mechanism 5 applies a force to the second indenter 4 in the direction of the battery cell tab A, which enables the second indenter 4 to tightly press the adhesive tape D against the second contact surface F, thereby improving the bonding effect of the adhesive tape D.
[0058] See Figure 4 , the above-mentioned second indenter 4 is also a columnar indenter. The sliding mechanism 5 includes a slider 51, a chute 52, and a spring 53. The slider 51 is arranged on the cylindrical surface of the first indenter 1, and the chute 52 is arranged on the cylindrical surface of the second indenter 4. The spring 53 is accommodated in the chute 52, and the slider 51 is also accommodated in the chute 52. In the chute 52, the spring 53 is located on the side close to the battery cell tab A, and the slider 51 is located on the side away from the battery cell tab A. The slider 51 abuts against the chute 52. When the second indenter 4 slides relative to the first indenter 1 in a direction away from the battery cell tab A, the spring 53 will be compressed. Thus, the spring 53 will apply a pressure to the second indenter 4 in the direction of the battery cell tab A, which enables the second indenter 4 to tightly press the adhesive tape D against the second contact surface F, thereby improving the bonding effect of the adhesive tape D. After the adhesive tape D is pasted, the battery cell tab taping device 100 moves away from the battery cell tab A, and the spring 53 returns to its original length. Then, the first indenter 1 returns to its original position relative to the second indenter 4, and then the operation of pasting the adhesive tape D can start again.
[0059] Optionally, in some embodiments, see Figure 1 , Figure 2 and Figure 3 , the contact end of the second indenter 4 includes an elastic contact head 41, and the elastic contact head 41 expands and contracts along the sliding direction. When the elastic contact head 41 does not contact the second contact surface F, the elastic contact head 41 does not deform. When the elastic contact head 41 contacts the second contact surface F and produces an extrusion effect, the elastic contact head 41 is compressed.
[0060] This enables the adhesive tape D to be evenly stressed at each part when the adhesive tape D is pasted on the second contact surface F, thereby enabling a better pasting effect of the adhesive tape D. In addition, after the elastic pressing head 41 contacts the second contact surface F and produces an extrusion effect, it can be compressed, thereby reducing the relative sliding distance of the second pressing head 4 relative to the first pressing head 1, and further reducing the elastic deformation of the sliding mechanism 5.
[0061] It should be noted that the elastic pressing head 41 is made of an elastic material, which can be silica gel or rubber, or other elastic materials. The embodiments of the present application do not limit this.
[0062] Optionally, in some embodiments, refer to Figure 1 、 Figure 2 and Figure 3 , the battery cell tab pasting device 100 further includes a suction device 6. A suction nozzle 7 is provided on the pressing surface of the first pressing head 1, and the suction nozzle 7 is communicated with the suction device 6. After the suction device 6 is turned on, the air pressure outside the suction nozzle 7 is greater than the air pressure inside the suction nozzle 7. When the pressing surface of the first pressing head 1 contacts the adhesive tape D, the adhesive tape D can be adsorbed on the pressing surface of the first pressing head 1, thereby avoiding the sliding of the adhesive tape D relative to the first pressing head 1, and thus enabling a better pasting effect of the adhesive tape D on the first contact surface E.
[0063] And / or, a suction nozzle 7 is provided on the pressing surface of the second pressing head 4, and the suction nozzle 7 is communicated with the suction device 6. In this way, when the pressing surface of the second pressing head 4 contacts the adhesive tape D, the adhesive tape D can be adsorbed on the pressing surface of the second pressing head 4, thereby avoiding the sliding of the adhesive tape D relative to the second pressing head 4, and thus enabling a better pasting effect of the adhesive tape D on the second contact surface F.
[0064] Refer to Figure 1 and Figure 3, when using the above-mentioned cell tab gluing device 100 to paste the adhesive tape D on the front side of the cell tab A, first make the contact surfaces of the first pressing head 1 and the second pressing head 4 flush, then turn on the suction device 6, and then use the two flush contact surfaces to adsorb the adhesive tape D. Then make the two contact surfaces adsorbed with the adhesive tape D gradually move towards the front side of the cell tab A. When the contact surface of the second pressing head 4 touches the second contact surface F, under the action of the sliding mechanism 5, the first pressing head 1 can continue to move until the contact surface of the first pressing head 1 touches the first contact surface E, and the first pressing head 1 stops moving. At this time, the contact surface of the first pressing head 1 abuts against the first contact surface E, the contact surface of the second pressing head 4 abuts against the second contact surface F, and the flexible contact 2 abuts against the bonding strip with the arc surface C. The flexible contact 2 can adaptively deform according to the shape of the arc surface C. In this way, not only can the effect of pasting the adhesive tape D on the cell tab A be better, but also it can be ensured that the arc surface C will not be cracked, thereby preventing the bonding strip with the arc surface C from being cracked, so that the cell tab A can be prevented from being cracked, and the quality of the cell is improved.
[0065] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of the present application, and are not intended to limit them; although the present application has been described in detail with reference to the foregoing embodiments, those of ordinary skill in the art should understand that they can still modify the technical solutions described in the foregoing embodiments, or perform equivalent replacements on some or all of the technical features; and these modifications or replacements do not make the essence of the corresponding technical solutions deviate from the scope of the technical solutions of the embodiments of the present application.
Claims
1. A battery cell tab gluing device (100), characterized in that: include: A first pressure head (1), wherein the first pressure head (1) is a columnar pressure head; A flexible contact (2), the flexible contact (2) being arranged at the junction of the contact pressure surface of the first pressure head (1) and the cylindrical surface of the first pressure head (1); A driving mechanism (3), wherein the first pressing head (1) is fixedly connected to the driving mechanism (3).
2. The battery cell tab gluing device (100) according to claim 1, characterized in that: A receiving groove (12) is provided at the junction position between the contact surface of the first pressure head (1) and the cylindrical surface of the first pressure head (1), and the flexible contact (2) is arranged in the receiving groove (12).
3. The battery cell tab gluing device (100) according to claim 2, characterized in that: The outer convex part of the flexible contact (2) is provided with a rounded corner (21).
4. The battery cell tab gluing device (100) according to claim 2, characterized in that: The ratio M of the width of the flexible contact (2) to the width of the contact surface of the first pressure head (1) is in the range of: 1 / 4≤M≤1 / 3.
5. The battery cell tab gluing device (100) according to claim 2, characterized in that: The flexible contact (2) comprises a contact pressure head (22) and an elastic member (23), and the elastic member (23) is fixedly connected to the first pressure head (1) and the contact pressure head (22).
6. The battery cell tab gluing device (100) according to claim 5, characterized in that: The elastic member (23) comprises a compression spring (231), and two ends of the compression spring (231) are respectively fixedly connected to the first pressure head (1) and the contact pressure head (22); And / or, the elastic member (23) comprises a torsion spring, and the torsion spring is sandwiched between the first pressure head (1) and the contact pressure head (22).
7. The battery cell tab gluing device (100) according to any one of claims 2 to 6, characterized in that: The battery cell tab gluing device (100) further comprises a second pressing head (4) and a sliding mechanism (5); the sliding mechanism (5) is arranged between the cylindrical surface of the first pressing head (1) and the surface of the second pressing head (4) and slidingly connects the first pressing head (1) and the second pressing head (4); the sliding direction of the sliding mechanism (5) is parallel to the axis of the first pressing head (1); the sliding mechanism (5) and the accommodating groove (12) are located on the same side of the cylindrical surface of the first pressing head (1).
8. The battery cell tab gluing device (100) according to claim 7, characterized in that: The sliding mechanism (5) has elasticity along the sliding direction.
9. The battery cell tab gluing device (100) according to claim 7, characterized in that: The contact pressure end of the second pressure head (4) comprises an elastic contact pressure head (41), and the elastic contact pressure head (41) is retracted along the sliding direction.
10. The battery cell tab gluing device (100) according to claim 7, characterized in that: The battery cell tab gluing device (100) further comprises an air suction device (6), and a suction nozzle (7) is provided on the contact pressure surface of the first pressure head (1) and / or the second pressure head (4), and the suction nozzle (7) is connected to the air suction device (6).