Tab rubberizing device

Abstract

The utility model relates to a tab rubberizing device which comprises a driving mechanism, a rubberizing head and a smoothing mechanism, and the rubberizing head and the smoothing mechanism are both installed at the driving end of the driving mechanism. And after the adhesive tape is obtained by the adhesive tape pasting head, the driving mechanism drives the adhesive tape pasting head and the smoothing mechanism to move towards the battery cell to be pasted with the adhesive tape together until the flexible abutting piece is in contact with the battery cell main body. And then, the flexible abutting piece is driven by the smoothing driving piece to move towards the adhesive tape pasting head, so that one part of the adhesive tape is uniformly pasted on the surface of the battery cell main body. When the flexible abutting piece moves to the tail end of the battery cell main body, the driving mechanism continuously drives the adhesive tape sticking head and the smoothing mechanism to move, and the flexible abutting piece obliquely moves under the combined action of the driving mechanism and the smoothing driving piece, so that the flexible abutting piece is matched with the adhesive tape sticking head to gradually stick the other part of the adhesive tape to the tab. In the adhesive tape pasting process, the adhesive tape is pasted mainly through the friction force of the flexible abutting piece, so that the pressure on the battery cell is small, and the battery cell can be effectively prevented from being damaged.

Description

Technical Field

[0001] This utility model relates to the field of lithium battery equipment technology, and in particular to an electrode tab adhesive device. Background Technology

[0002] During lithium battery production, after the tabs are welded, adhesive tape is typically applied to both sides for protection. The two ends of the tape are attached to the surface of the battery cell and the tab, respectively, creating a Z-shaped adhesive application. Currently, two adhesive applicators are commonly used, pressing down to contact the battery cell and tabs for application. However, this pressing process applies significant pressure to the battery cell and tabs, which can easily cause damage to the battery cell or breakage of the tabs. Utility Model Content

[0003] Therefore, it is necessary to provide a tab bonding device that can effectively avoid damage to the battery cell to address the above problems.

[0004] An adhesive tab applicator includes a driving mechanism, an adhesive applicator head, and a smoothing mechanism. The adhesive applicator head is mounted on the driving end of the driving mechanism. The smoothing mechanism includes a smoothing driving component and a flexible abutment component. The flexible abutment component is located on one side of the adhesive applicator head and can move closer to or further away from the adhesive applicator head under the drive of the smoothing driving component.

[0005] In one embodiment, the adhesive surface of the adhesive applicator has adsorption holes.

[0006] In one embodiment, the edge of the adhesive applicator facing the flexible abutment has a chamfered structure.

[0007] In one embodiment, the smoothing mechanism further includes a connecting plate, the connecting plate including a first connecting segment and a second connecting segment, the first connecting segment being connected to the smoothing drive member, and the second connecting segment being connected to the end of the second connecting segment away from the smoothing drive member and extending along the moving direction of the flexible abutment member.

[0008] In one embodiment, the flexible abutment is detachably mounted to the second connecting segment.

[0009] In one embodiment, the flexible abutment is configured as a brush.

[0010] In one embodiment, the end face of the flexible abutment is set as a plane.

[0011] In one embodiment, the smoothing mechanism is mounted on the drive end of the drive mechanism.

[0012] In one embodiment, the smoothing mechanism and the adhesive applicator can move toward the battery cell to be adhesiveped under the drive of the driving mechanism until the flexible abutment abuts against the battery cell body; the smoothing drive can drive the flexible abutment to move toward the adhesive applicator until the flexible abutment slides along the surface of the battery cell body to the edge; under the drive of the smoothing drive and the drive, the adhesive applicator moves to abut against the tab, and the flexible abutment moves along the end face of the battery cell body to abut against the tab.

[0013] In one embodiment, two adhesive applicators are provided, with the adhesive surfaces of the two adhesive applicators facing each other, and each adhesive applicator is provided with a corresponding smoothing mechanism.

[0014] In one embodiment, two drive mechanisms are provided, with the two adhesive application heads and the corresponding smoothing mechanisms respectively installed on the drive ends of the two drive mechanisms.

[0015] In one embodiment, the adhesive applicator head is connected to the drive end of the drive mechanism via an elastic buffer.

[0016] In the aforementioned tab-applying device, after the applicator head acquires the adhesive tape, the drive mechanism moves both the applicator head and the smoothing mechanism toward the battery cell to be applicated until the acquired adhesive tape contacts the battery cell body. Next, the flexible abutment, driven by the smoothing drive, moves along the surface of the battery cell body toward the applicator head, thereby evenly applying a portion of the adhesive tape to the surface of the battery cell body. Once the flexible abutment reaches the end of the battery cell body, the drive mechanism continues to drive the applicator head and the smoothing mechanism to move. The flexible abutment, under the combined action of the drive mechanism and the smoothing drive, moves obliquely, thus gradually applying the other portion of the adhesive tape to the tab in conjunction with the applicator head. During the applicating process, the adhesive tape is applied primarily by the friction of the flexible abutment, resulting in relatively low pressure on the battery cell and effectively preventing damage to the battery cell. Attached Figure Description

[0017] To more clearly illustrate the technical solutions in the embodiments of this application or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this application. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0018] Figure 1 This is a schematic diagram of the electrode tab adhesive device in one embodiment of the present invention;

[0019] Figure 2 for Figure 1 A magnified schematic diagram of part A in the electrode tab adhesive device shown;

[0020] Figure 3 for Figure 1 The diagram shows a scenario where the electrode tab adhesive device performs an adhesive application operation.

[0021] Figure 4 for Figure 1 Another schematic diagram of the electrode tab adhesive device performing the adhesive application operation;

[0022] Figure 5 for Figure 1 This is another schematic diagram of the electrode tab adhesive device performing the adhesive application operation. Detailed Implementation

[0023] To make the above-mentioned objects, features, and advantages of this utility model more apparent and understandable, the specific embodiments of this utility model will be described in detail below with reference to the accompanying drawings. Many specific details are set forth in the following description to provide a full understanding of this utility model. However, this utility model can be implemented in many other ways different from those described herein, and those skilled in the art can make similar modifications without departing from the spirit of this utility model. Therefore, this utility model is not limited to the specific embodiments disclosed below.

[0024] In the description of this utility model, it should be understood that the terms "center", "longitudinal", "transverse", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", "axial", "radial", "circumferential", etc., indicating the orientation or positional relationship are based on the orientation or positional relationship shown in the accompanying drawings, and are only for the convenience of describing this utility model and simplifying the description, and are not intended to indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of this utility model.

[0025] Furthermore, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of indicated technical features. Thus, a feature defined as "first" or "second" may explicitly or implicitly include at least one of that feature. In the description of this utility model, "a plurality of" means at least two, such as two, three, etc., unless otherwise explicitly specified.

[0026] In this utility model, unless otherwise explicitly specified and limited, the terms "installation," "connection," "joining," and "fixing," etc., should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral part; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; they can refer to the internal communication of two components or the interaction between two components, unless otherwise explicitly limited. Those skilled in the art can understand the specific meaning of the above terms in this utility model according to the specific circumstances.

[0027] In this utility model, unless otherwise explicitly specified and limited, "above" or "below" the second feature can mean that the first feature is in direct contact with the second feature, or that the first feature is in indirect contact with the second feature through an intermediate medium. Furthermore, "above," "on top of," and "over" the second feature can mean that the first feature is directly above or diagonally above the second feature, or simply that the first feature is at a higher horizontal level than the second feature. "Below," "below," and "under" the second feature can mean that the first feature is directly below or diagonally below the second feature, or simply that the first feature is at a lower horizontal level than the second feature.

[0028] It should be noted that when an element is referred to as being "fixed to" or "set on" another element, it can be directly on the other element or there may be an intervening element. When an element is considered to be "connected to" another element, it can be directly connected to the other element or there may be an intervening element. The terms "vertical," "horizontal," "upper," "lower," "left," "right," and similar expressions used herein are for illustrative purposes only and do not represent the only possible implementation.

[0029] Please see Figure 1 and Figure 2 In one embodiment of the present invention, the tab adhesive device 100 includes a drive mechanism 110, an adhesive head 120, and a smoothing mechanism 130.

[0030] Both the adhesive applicator 120 and the smoothing mechanism 130 are mounted on the drive end of the drive mechanism 110. The drive mechanism 110 can drive the adhesive applicator 120 and the smoothing mechanism 130 to reciprocate along a preset direction (generally vertical in actual operation), thereby driving the adhesive applicator 120 and the smoothing mechanism 130 to switch between the adhesive dispensing position and the adhesive application position. Specifically, the drive mechanism 110 can adopt a structure in which a motor and a lead screw pair cooperate, which helps to improve the stability of the adhesive applicator 120 and the smoothing mechanism 130.

[0031] The adhesive applicator 120 can pick up tape 200 at the adhesive dispensing position (see...). Figure 3The cut tape 200 can be adsorbed onto the adhesive surface of the applicator 120 by means of negative pressure adsorption, electrostatic adsorption, etc. The adhesive surface of the applicator 120 is roughly flat, which allows the tape 200 to be spread out well. Specifically, in this embodiment, the adhesive surface of the applicator 120 is formed with adsorption holes (not shown). During operation, the adsorption holes can communicate with an external negative pressure mechanism, thereby creating negative pressure on the adhesive surface of the applicator 120.

[0032] The smoothing mechanism 130 includes a smoothing drive component 131 and a flexible abutment component 132. The flexible abutment component 132 is located on one side of the adhesive applicator head 120 and can move closer to or further away from the adhesive applicator head 120 under the drive of the smoothing drive component 131. Specifically, in actual operation, the flexible abutment component 132 is generally located on the left or right side of the adhesive applicator head 120. The smoothing drive component 131 can be a cylinder, which is connected to the flexible abutment component 132 for transmission. The flexible abutment component 132 can be a flexible element such as a brush, silicone sheet, or rubber sheet, capable of flexibly abutting against the battery cell 300 to be adhesive applied. A brush is preferred, and it can be a bristle brush, fiber brush, nylon brush, etc.

[0033] The driving direction of the smoothing drive member 131 is generally roughly perpendicular to the driving direction of the drive mechanism 110. In actual operation, it generally drives the flexible support member 132 to move in the left-right direction, thereby moving closer to or away from the adhesive applicator 120. The end of the flexible support member 132 is generally flush with or slightly protruding from the adhesive surface of the adhesive applicator 120. Moreover, in the initial state when the adhesive applicator 120 just picks up the tape 200, the adhesive applicator 120 is opposite to the tab of the battery cell 300, while the flexible support member 132 is opposite to the battery cell body.

[0034] like Figure 3 As shown, after the adhesive applicator 120 acquires the adhesive tape 200, the drive mechanism 110 first drives the adhesive applicator 120 and the smoothing mechanism 130 to move together toward the battery cell 300 to be adhesiveped, until the flexible support member 132 contacts the battery cell body. At this time, the adhesive applicator 120 is suspended above the electrode tab, with part of the adhesive tape 200 attached to the battery cell body and the other part suspended above the electrode tab. Then, the flexible support member 132 moves toward the adhesive applicator 120 under the drive of the smoothing drive member 131, thereby evenly applying the portion of the adhesive tape 200 attached to the battery cell body to the surface of the battery cell body.

[0035] like Figure 4 As shown, once the flexible support member 132 moves to the end of the cell body, the drive mechanism 110 continues to drive the adhesive applicator 120 and the smoothing mechanism 130 to move. Under the combined action of the drive mechanism 110 and the smoothing drive member 131, the flexible support member 132 moves obliquely, thereby squeezing another part of the adhesive tape 200 toward the electrode tab. During this process, the flexible support member 132 moves along the end face of the cell body until it comes into contact with the electrode tab.

[0036] like Figure 5 As shown, when the adhesive applicator 120 moves to the point where the tabs are in contact, another part of the adhesive tape 200 will also be applied to the tabs. During the application process, the adhesive tape 200 is applied mainly by the friction of the flexible support member 132, so the pressure on the tabs of the battery cell 300 is relatively small, which can effectively avoid damaging the battery cell 300.

[0037] It should be noted that in other embodiments, the smoothing mechanism 130 may not be installed on the drive end of the drive mechanism 110, but may be moved to the adhesive application position by a separate drive structure to perform the adhesive application operation. After the adhesive application head 120 acquires the adhesive tape 200, the drive mechanism 110 first drives the adhesive application head 120 to move until the adhesive tape 200 partially contacts the battery cell body. Then, the smoothing mechanism 130 moves to the adhesive application position and makes the flexible abutment 132 abut against the surface of the battery cell body.

[0038] Specifically, in this embodiment, the adhesive applicator 120 is connected to the drive end of the drive mechanism 110 via an elastic buffer (not shown). The elastic buffer can be a spring, an elastic washer, etc. In this way, when the adhesive applicator 120 abuts against the tab of the battery cell 300, the elastic buffer can play a better buffering role, thereby preventing the adhesive applicator 120 from being too impacted and causing the tab to tear.

[0039] Furthermore, during the process of bending the tape 200 into a Z-shape, the bending is mainly caused by the force applied to the tape 200 through the oblique movement of the flexible support member 132. The flexible support member 132 has a high degree of contact with the surface and end face of the battery cell body during the movement, which can also improve the adhesion of the tape 200.

[0040] Please refer to it again. Figure 3 In this embodiment, the edge of the adhesive applicator 120 facing the flexible support member 132 has a chamfered structure 121. This avoids burrs or sharp structures on the side of the adhesive applicator 120 facing the battery cell body. During the movement of the adhesive applicator 120 toward the electrode tab, it effectively avoids scratching the end face of the battery cell body or puncturing the electrode tab, thereby effectively preventing damage to the battery cell 300.

[0041] Please refer to it again. Figure 2 In this embodiment, the smoothing mechanism 130 further includes a connecting plate 133, which includes a first connecting segment and a second connecting segment. The first connecting segment is connected to the smoothing drive member 131, and the second connecting segment is connected to the end of the first connecting segment away from the smoothing drive member 131 and extends along the moving direction of the flexible support member 132.

[0042] The first section of the connecting plate 133 is approximately perpendicular to the driving direction of the smoothing drive member 131, and the second section is approximately parallel to the driving direction of the smoothing drive member 131. The connecting plate 133 is generally L-shaped, which provides a larger installation position for the flexible support member 132 and makes the smoothing mechanism 130 more compact.

[0043] Furthermore, in this embodiment, the flexible abutment 132 is detachably installed on the second connecting section. The flexible abutment 132 is a consumable part, and wear will occur after repeated use, causing the smoothing mechanism 120 to fail. Since the flexible abutment 132 is detachable, only the flexible abutment 132 needs to be replaced each time, reducing maintenance costs.

[0044] In this embodiment, the end face of the flexible abutment 132 is set as a plane. In this way, when the flexible abutment 132 abuts against the battery cell body, the contact area between it and the battery cell body can be increased, thereby further improving the application effect of the tape 200.

[0045] Furthermore, in this embodiment, two adhesive application heads 120 are provided, with their adhesive application surfaces facing each other, and each adhesive application head 120 is correspondingly provided with a smoothing mechanism 130. During adhesive application, the battery cell 300 to be adhesiveped is first fed between the two adhesive application heads 120, so the two adhesive application heads 120, together with the corresponding smoothing mechanism 130, can simultaneously apply adhesive to both sides of the battery cell 300, thereby improving adhesive application efficiency.

[0046] It is understood that in other embodiments, only one adhesive applicator 120 and one smoothing mechanism 130 may be provided. After one side of the battery cell 300 is coated with adhesive, it can be flipped over and then the other side of the battery cell 300 can be coated with adhesive.

[0047] Furthermore, in this embodiment, two drive mechanisms 110 are provided, with two adhesive application heads 120 and corresponding smoothing mechanisms 130 respectively installed on the drive ends of the two drive mechanisms 110. That is, each adhesive application head 120 and its corresponding smoothing mechanism 130 is driven by a separate drive mechanism 110 to complete the adhesive application, so the adhesive application process on both sides of the battery cell 300 does not interfere with each other.

[0048] In the aforementioned tab-applying device 100, after the applicator head 120 acquires the adhesive tape 200, the drive mechanism 110 drives the applicator head 120 and the smoothing mechanism 130 to move together toward the battery cell 300 to be applicated, until the flexible support member 132 contacts the battery cell body. Then, driven by the smoothing drive member 131, the flexible support member 132 moves toward the applicator head 120, thereby evenly applying a portion of the adhesive tape 200 to the surface of the battery cell body. Once the flexible support member 132 has moved to the end of the battery cell body, the drive mechanism 110 continues to drive the applicator head 120 and the smoothing mechanism 130 toward the tab. The flexible support member 132 then moves obliquely under the combined action of the drive mechanism 110 and the smoothing drive member 131, thereby gradually applying the other portion of the adhesive tape 200 to the tab in conjunction with the applicator head 120. During the adhesive application process, the adhesive tape 200 is applied mainly by the friction of the flexible support 132, so the pressure on the battery cell 300 is relatively small, thus effectively avoiding damage to the battery cell 300.

[0049] The technical features of the above embodiments can be combined in any way. For the sake of brevity, not all possible combinations of the technical features in the above embodiments are described. However, as long as there is no contradiction in the combination of these technical features, they should be considered to be within the scope of this specification.

[0050] The embodiments described above are merely illustrative of several implementations of this utility model, and while the descriptions are relatively specific and detailed, they should not be construed as limiting the scope of the utility model patent. It should be noted that those skilled in the art can make various modifications and improvements without departing from the concept of this utility model, and these all fall within the protection scope of this utility model. Therefore, the protection scope of this utility model patent should be determined by the appended claims.

Claims

1. A tab-adhesive bonding device, characterized in that, It includes a driving mechanism, an adhesive applicator, and a smoothing mechanism. The adhesive applicator is mounted on the driving end of the driving mechanism. The smoothing mechanism includes a smoothing driving component and a flexible supporting component. The flexible supporting component is located on one side of the adhesive applicator and can move closer to or further away from the adhesive applicator under the drive of the smoothing driving component.

2. The tab-applying device according to claim 1, characterized in that, The adhesive surface of the adhesive applicator has adsorption holes.

3. The tab-applying device according to claim 1, characterized in that, The edge of the adhesive applicator facing the flexible support member has a chamfered structure.

4. The tab-applying device according to claim 1, characterized in that, The smoothing mechanism further includes a connecting plate, which includes a first connecting segment and a second connecting segment. The first connecting segment is connected to the smoothing drive member, and the second connecting segment is connected to the end of the second connecting segment away from the smoothing drive member and extends along the moving direction of the flexible support member.

5. The tab-applying device according to claim 4, characterized in that, The flexible abutment is detachably installed on the second connecting section.

6. The tab-applying device according to claim 1, characterized in that, The flexible abutment is configured as a brush.

7. The tab-applying device according to claim 6, characterized in that, The end face of the flexible support member is set as a plane.

8. The tab-applying device according to claim 1, characterized in that, The smoothing mechanism is installed at the drive end of the drive mechanism.

9. The tab-applying device according to claim 8, characterized in that, The smoothing mechanism and the adhesive applicator can move toward the battery cell to be adhesiveed under the drive of the driving mechanism until the flexible support member abuts against the battery cell body; the smoothing drive member can drive the flexible support member to move toward the adhesive applicator until the flexible support member slides along the surface of the battery cell body to the edge; under the drive of the smoothing drive member and the drive member, the adhesive applicator moves to abut against the tab, and the flexible support member moves along the end face of the battery cell body to abut against the tab.

10. The tab-applying device according to claim 1, characterized in that, The adhesive applicator is provided in two parts, with the adhesive surfaces of the two adhesive applicators facing each other, and each adhesive applicator is provided with a corresponding smoothing mechanism.

11. The tab-adhesive device according to claim 10, characterized in that, The drive mechanism is provided in two parts, and the two adhesive application heads and the corresponding smoothing mechanism are respectively installed on the drive ends of the two drive mechanisms.

12. The tab-applying device according to claim 1, characterized in that, The adhesive applicator head is connected to the drive end of the drive mechanism via an elastic buffer.

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