CN220804996U - Tab pre-smoothing structure - Google Patents

Abstract

The utility model provides a tab pre-smoothing structure, which relates to the technical field of battery pole pieces and comprises a pre-smoothing part and an induction part arranged in front of the pre-smoothing part, wherein the pre-smoothing part comprises a pre-smoothing upper plate, a pre-smoothing lower plate, an upper telescopic rod for driving the pre-smoothing upper plate to displace and a lower telescopic rod for driving the pre-smoothing lower plate to displace, and the pre-smoothing upper plate and the pre-smoothing lower plate are arranged in parallel with the pole pieces. The electrode tab pre-smoothing device is simple in structure, the pre-smoothing part and the sensing part are arranged in front of the smoothing plate, the pre-smoothing part is in telescopic arrangement, when the sensing part senses that the electrode tab passes, the electrode tab is pressed through the pre-smoothing part, so that the electrode tab is primarily smoothed, the state difference of the electrode tab reaching the smoothing plate is small, the electrode tab smoothing effect is good, and the rejection rate of the electrode tab is reduced.

Description

Tab pre-smoothing structure

Technical Field

The utility model relates to the technical field of battery pole pieces, in particular to a pole lug pre-smoothing structure.

Background

The traditional forming mode of the pole lug of the lithium ion battery is ultrasonic welding pole lug and die cutting pole lug, and in recent years, the technology of forming the laser pole lug is raised, so that the production efficiency, the battery capacity and the multiplying power performance can be improved. The foil materials on two sides of the pole piece are left to be cut into pole lugs through laser in the laser pole lug forming mode, because the pole lugs are separated from each other after cutting, the mutual acting force is not involved, the foil materials used for the pole lugs are very thin, the pole pieces are easily affected by various physical acting forces in the process of die cutting high-speed operation, the angle change of the pole lugs formed by the laser is very large when the pole lugs pass through a carrier roller, the pole lugs are easy to tilt and fold, and then the pole lug root is torn, the pole pieces are broken, and the pole lugs fall off, so that the pole pieces are bad to be scrapped.

It is necessary to smooth the tab formed by laser, for example, chinese patent application No. CN218648102U provides a battery tab smoothing device, where the battery tab smoothing device includes a fixing bracket connected to the passing roller, and the fixing bracket can rotate to any angle around the center of the passing roller relative to the circumferential direction of the passing roller; a center connecting assembly, one end of which is connected to the fixed bracket, and the other end of which extends to the side of the passing roller; the elastic arc plate is connected to the central connecting assembly, is bent towards the passing roller and is spaced from the passing roller by a preset gap, and the polar belt material is smoothed by the passing roller and the elastic arc plate through the preset gap. The battery tab smoothing device solves the problems that when a battery coil passes through a roller, the tab turns over, folds, flanging and bends with different degrees are formed, so that the rejection rate is reduced.

However, the battery tab smoothing device still has the following disadvantages: the pacifier plate is a fixed device, and is usually fixed after the position of the pacifier plate is set, so that the correction amplitude of the pacifier plate is limited. In the actual production process, the state of the tabs is not unchanged, some tabs are over-stretched and tilted, and some tabs are not stretched completely and are sunken. Therefore, the smoothing plate is difficult to be compatible, so that the situation of abnormal tabs still exists; the gap width between the smoothing plate and the passing roller can only be manually adjusted, and proper opening and closing degrees can be generally selected according to production conditions, so that the lug with different bending conditions is difficult to be compatible in practice. If the opening and closing degree of the manual setting is smaller, the tab with large bending degree still has high folding risk; if the opening and closing degree of the manual setting is larger, the effect of smoothing the lug with small bending degree can not be achieved.

Therefore, in order to solve the above-mentioned problems, it is necessary to design a reasonably efficient tab pre-smoothing structure.

Disclosure of utility model

The utility model aims to provide a pole lug pre-smoothing structure which is simple in structure, a pre-smoothing part and an induction part are arranged in front of a smoothing plate, the pre-smoothing part is in telescopic arrangement, when the induction part induces that a pole lug passes, the pole lug is pressed through the pre-smoothing part, so that the pole lug is preliminarily smoothed, the state difference of the pole lug reaching the smoothing plate is ensured to be small, the pole lug smoothing effect is good, and the rejection rate of the pole piece is reduced.

In order to achieve the above purpose, the utility model is realized by adopting the following technical scheme:

the utility model provides a utmost point ear is smooth structure in advance, including smooth the piece in advance and set up in smooth the place ahead induction piece in advance, smooth the piece in advance including smooth the upper plate in advance, smooth the lower plate in advance, be used for the drive smooth the last telescopic link of upper plate displacement in advance and be used for the drive smooth the lower telescopic link of lower plate displacement in advance, smooth the upper plate in advance and smooth the lower plate in advance and all set up with pole piece parallel.

Preferably, the sensing piece comprises an upper sensing plate and a lower sensing plate, and the side, close to the lower sensing plate, of the upper sensing plate and the side, close to the upper sensing plate, of the lower sensing plate are respectively provided with a sensor.

Preferably, the sensor is an ultrasonic sensor.

Preferably, the number of the sensors on the upper sensing plate and the lower sensing plate is at least two.

Preferably, the upper sensing plate and the lower sensing plate are connected through a connecting plate, and the connecting plate is connected with a driving rod.

As a preferred aspect of the present utility model, the pre-smoothing upper plate and the pre-smoothing lower plate are disposed in parallel, and in practice, the pre-smoothing upper plate and the pre-smoothing lower plate are disposed in parallel with the pole piece.

Preferably, the upper sensing plate and the lower sensing plate are arranged in parallel, and in practice, the upper sensing plate and the lower sensing plate are both arranged in parallel with the pole piece.

Preferably, the pre-flattening upper plate edge is provided with an upper rocker extending away from the pre-flattening lower plate direction, and the pre-flattening lower plate edge is provided with a lower rocker extending away from the pre-flattening upper plate direction.

Preferably, the upper rocker and the lower rocker are arc-shaped pieces.

Preferably, the upper telescopic rod and the lower telescopic rod are coaxially arranged.

Preferably, the utility model further comprises a controller, and the upper telescopic rod, the lower telescopic rod and the sensor are electrically connected with the controller.

The tab pre-smoothing structure has the beneficial effects that: simple structure, smooth piece and response piece in advance in the place ahead of pacifying the flat board, and smooth the piece in advance for scalable setting, when the response piece sensed that there is the utmost point ear to pass through, press the utmost point ear of pole piece through smooth the piece in advance, make the utmost point ear tentatively smooth, ensure to reach and smooth the utmost point ear state difference of flat board department little, the utmost point ear smoothes effectually, reduces the bad disability rate of pole piece.

Drawings

FIG. 1 is a schematic view of the overall structure of an embodiment of a tab pre-smoothing structure of the present utility model;

FIG. 2 is a schematic illustration of the structure of a pre-pacifier in one embodiment of a tab pre-pacifier of the present utility model;

FIG. 3 is a schematic view of a sensing member in an embodiment of a tab pre-smoothing structure according to the present utility model;

In the figure: 1. pre-smoothing member, 11, pre-smoothing upper plate, 111, upper rocker, 12, pre-smoothing lower plate, 121, lower rocker, 13, upper telescopic rod, 14, lower telescopic rod, 2, sensing member, 21, upper sensing plate, 22, lower sensing plate, 23, sensor, 24, connecting plate, 241, driving rod, 3, pole piece, 31, pole lug, 4, smoothing plate, 41, passing roller.

Detailed Description

The following are specific examples of the present utility model, and the technical solutions of the present utility model are further described, but the present utility model is not limited to these examples.

Various exemplary embodiments of the present utility model will now be described in detail with reference to the accompanying drawings. It should be noted that: the relative arrangement of the modules and steps set forth in these embodiments and the steps do not limit the scope of the present utility model unless specifically stated otherwise.

Meanwhile, it should be understood that the flow in the drawings is not merely performed alone, but a plurality of steps are performed to cross each other for convenience of description.

In the description of the present utility model, it should be noted that, directions or positional relationships indicated by terms such as "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer", etc., are directions or positional relationships based on those shown in the drawings, or are directions or positional relationships conventionally put in use of the present utility model product, are merely for convenience of describing the present utility model and simplifying the description, and do not indicate or imply that the apparatus or elements to be referred to must have a specific direction, be configured and operated in a specific direction, and thus should not be construed as limiting the present utility model. Furthermore, the terms "first," "second," and the like, are used merely to distinguish between descriptions and should not be construed as indicating or implying relative importance.

The following description of at least one exemplary embodiment is merely exemplary in nature and is in no way intended to limit the utility model, its application, or uses.

Techniques, methods, and systems known to those of ordinary skill in the relevant art may not be discussed in detail, but where appropriate, should be considered part of the specification.

Embodiment one: as shown in fig. 1 to 3, which are only embodiments of the present utility model, a tab pre-smoothing structure includes a pre-smoothing member 1 and a sensing member 2 disposed in front of the pre-smoothing member 1, wherein the pre-smoothing member 1 includes a pre-smoothing upper plate 11, a pre-smoothing lower plate 12, an upper telescopic rod 13 for driving the pre-smoothing upper plate 11 to displace, and a lower telescopic rod 14 for driving the pre-smoothing lower plate 12 to displace, and the pre-smoothing upper plate 11 and the pre-smoothing lower plate 12 are both disposed parallel to a pole piece.

After cutting the pole piece on the die cutting machine, the pole piece 3 is transported by a roller 41, and a smoothing plate 4 is arranged at the roller 41 to smooth the pole lug 31 of the pole piece 3.

Here, the pre-smoothing structure comprises a pre-smoothing member 1 and a sensing member 2, wherein the sensing member 2 is arranged in front of the pre-smoothing member 1, that is, the sensing member 2 is arranged on one side of the pre-smoothing member 1 away from the smoothing plate 4, so that the passing sequence of the pole pieces 3 and the pole lugs 31 is as follows: laser cutting device-induction element 2-pre-smoothing element 1-smoothing plate 4.

To the pre-smoothing action of the tab 31, the pre-smoothing action is completed by the pre-smoothing element 1, the pre-smoothing element 1 comprises a pre-smoothing upper plate 11, a pre-smoothing lower plate 12, an upper telescopic rod 13 for driving the pre-smoothing upper plate 11 to displace and a lower telescopic rod 14 for driving the pre-smoothing lower plate 12 to displace, the pre-smoothing upper plate 11 is located above the transmission position of the tab 3, the upper telescopic rod 13 is connected with the upper side of the pre-smoothing upper plate 11, the pre-smoothing lower plate 12 is located below the transmission position of the tab 3, the lower telescopic rod 14 is connected with the lower side of the pre-smoothing lower plate 12, and the upper telescopic rod 13 and the lower telescopic rod 14 can stretch, so that the pre-smoothing upper plate 11 and the pre-smoothing lower plate 12 can displace up and down, and the warped tab 31 is extruded and smoothed.

Because the tabs 31 on the pole piece 3 are arranged at intervals, the sensing piece 2 is used for acquiring whether the tabs 31 reach the pre-smoothing structure, when the tabs reach the sensing piece 2, the upper telescopic rod 13 stretches out downwards, and the lower telescopic rod 14 stretches out upwards, so that the pre-smoothing upper plate 11 and the pre-smoothing lower plate 12 are close to each other to smooth the tabs 31.

The present utility model also includes a controller to which the upper telescoping rod 13, lower telescoping rod 14 and sensor 23 are electrically connected.

In order to make the tab smooth effect better, smooth upper plate 11 in advance and smooth lower plate 12 parallel arrangement in advance, go up telescopic link 13 and lower telescopic link 14 all are vertical setting, in fact, smooth upper plate 11 in advance and smooth lower plate 12 all with pole piece 3 parallel arrangement in advance, go up telescopic link 13 and lower telescopic link 14 all with pole piece 3 perpendicular arrangement.

In addition, the rotation driving motor of the roller 41 is also electrically connected with the controller, the controller can obtain the rotation speed of the roller 41, namely the transmission speed of the pole piece 3, then according to the distance between the pre-smoothing member 1 and the sensing member 2, the time t from the operation of the pole lug 31 from the sensing member 2 to the pre-smoothing member 1 can be calculated, when the sensing member 2 senses that the pole lug 31 arrives, the upper telescopic rod 13 and the lower telescopic rod 14 are controlled to stretch and retract, so that after the time t, the pole lug 31 of the pole piece 3 can be just clamped by the pre-smoothing upper plate 11 and the pre-smoothing lower plate 12, and the pole lug 31 is pre-smoothed.

After pre-flattening, the pre-flattening upper plate 11 and the pre-flattening lower plate 12 are restored to an initial state (the distance between the pre-flattening upper plate 11 and the pre-flattening lower plate 12 in the initial state is larger than the thickness of any pole piece 3, the pole piece can conveniently pass through), the corrected pole lug 31 moves towards the flattening plate 4, and at the moment, after pre-flattening, the passing pole lug 31 is bent to be greatly corrected.

Embodiment two: as shown in fig. 1 to 3, which are only one embodiment of the present utility model, in the tab pre-smoothing structure of the present utility model, the sensing member 2 includes an upper sensing plate 21 and a lower sensing plate 22, and a sensor 23 is disposed on both a side of the upper sensing plate 21 adjacent to the lower sensing plate 22 and a side of the lower sensing plate 22 adjacent to the upper sensing plate 21.

The tabs 31 reaching the sensing member 2 may be normal or curved, and the situation in the first embodiment is to press and smooth all the tabs 31, but in order to reduce the power consumption of the pre-smoothing member 1 during pre-smoothing, the curved tabs 31 may be sensed, and the controller controls the pre-smoothing upper plate 11 and the pre-smoothing lower plate 12 to perform pre-smoothing only when the tabs 31 are curved.

The sensor 23 is an ultrasonic sensor, that is, the mode of sensing the bent tab 31 is ultrasonic sensing, however, the sensor 23 may be an infrared range finder, and the mode of infrared range finding may be used to sense whether the tab 31 is bent.

It should be noted that the upper sensing plate 21 and the lower sensing plate 22 are disposed in parallel, and in fact, the upper sensing plate 21 and the lower sensing plate 22 are disposed in parallel with the pole piece, and the distance between the upper sensing plate 21 and the pole piece 3 is the same as the distance between the lower sensing plate 22 and the pole piece 3.

The judging principle is as follows: when the pole piece 3 just passes through the middle between the upper induction plate 21 and the lower induction plate 22, judging whether the distances between the pole lug 31 and the upper induction plate 21 and the lower induction plate 22 are the same, and if so, flattening the pole lug 31; otherwise, the tab warpage is indicated.

Of course, the number of the sensors 23 on the upper sensing plate 21 and the lower sensing plate 22 is at least two, and the sensors 23 of the upper sensing plate 21 and the sensors 23 of the lower sensing plate 22 are correspondingly arranged up and down, so that whether the tab 31 is flat or not is judged from a plurality of positions, and the sensing accuracy is higher.

In some embodiments, three sensors 23 on the upper sensing plate 21 are respectively located at three vertices of the regular triangle structure, and three sensors 23 on the corresponding lower sensing plate 21 are respectively located right below the three sensors 23 on the upper sensing plate 21, so that whether the tab 31 is flat or not is judged at different positions in front, back, left and right, and the sensing accuracy is higher.

Embodiment III: as shown in fig. 1 to 3, which are only one embodiment of the present utility model, in the tab pre-smoothing structure of the present utility model, the upper sensing plate 21 and the lower sensing plate 22 are connected by a connecting plate 24, and the connecting plate 24 is connected with a driving rod 241; of course, a driving structure is arranged at one end of the driving rod 241 far away from the connecting plate 24, the driving structure can be adjusted up and down, left and right, front and back, and the driving rod 241 drives the sensing piece 2 to displace, so that the tab 31 just passes through the middle of the upper sensing plate 21 and the lower sensing plate 22; of course, the driving structure may also drive the driving rod 241 to rotate, so that the upper sensing plate 21 and the lower sensing plate 22 may be disposed parallel to the pole piece 3.

In the utility model, the edge of the pre-flattening upper plate 11 is provided with an upper rocker 111 extending away from the pre-flattening lower plate 12, and the edge of the pre-flattening lower plate 12 is provided with a lower rocker 121 extending away from the pre-flattening upper plate 11, so that the pole piece 3 can pass through between the pre-flattening upper plate 11 and the pre-flattening lower plate 12.

Of course, the upper rocker 111 and the lower rocker 121 are arc-shaped pieces, and guide the pole piece 3 and the tab 31, and smooth the tab 31 slowly.

In addition, the upper telescopic rod 13 and the lower telescopic rod 14 are coaxially arranged, so that the extrusion force is positioned on the same axis when the pre-flattening upper plate 11 and the pre-flattening lower plate 12 extrude towards the middle, the effect of flattening the tab 31 is good, and the impact inclination of the pre-flattening upper plate 11 and the pre-flattening lower plate 12 can be effectively avoided.

The tab pre-smoothing structure is simple in structure, the pre-smoothing part and the sensing part are arranged in front of the smoothing plate, the pre-smoothing part is in telescopic arrangement, when the sensing part senses that the tab passes, the tab is pressed through the pre-smoothing part, so that the tab is preliminarily smoothed, the tab state difference reaching the smoothing plate is small, the tab smoothing effect is good, and the rejection rate of the tab is reduced.

The present utility model is not limited to the above-described specific embodiments, and various modifications and variations are possible. Any modification, equivalent replacement, improvement, etc. of the above embodiments according to the technical substance of the present utility model should be included in the protection scope of the present utility model.

Claims (10)

1. Utmost point ear is smooth structure in advance, its characterized in that: including pacify piece (1) in advance and set up in pacify sensing piece (2) in advance of piece (1), pacify piece (1) in advance including pacify upper plate (11) in advance, pacify lower plate (12) in advance, be used for the drive pacify upper plate (11) upper telescopic link (13) of displacement in advance and be used for the drive pacify lower plate (12) lower telescopic link (14) of displacement in advance, pacify upper plate (11) in advance and pacify lower plate (12) in advance and all set up with the pole piece parallel.

2. The tab pre-smoothing structure of claim 1, wherein: the induction piece (2) comprises an upper induction plate (21) and a lower induction plate (22), wherein a sensor (23) is arranged on one side of the upper induction plate (21) close to the lower induction plate (22) and one side of the lower induction plate (22) close to the upper induction plate (21).

3. The tab pre-smoothing structure of claim 2, wherein: the upper induction plate (21) and the lower induction plate (22) are arranged in parallel with the pole piece.

4. The tab pre-smoothing structure of claim 2, wherein: the sensor (23) is an ultrasonic sensor.

5. The tab pre-smoothing structure of claim 2, wherein: the number of the sensors (23) on the upper sensing plate (21) and the lower sensing plate (22) is at least two.

6. The tab pre-smoothing structure of claim 2, wherein: the upper induction plate (21) and the lower induction plate (22) are connected through a connecting plate (24), and the connecting plate (24) is connected with a driving rod (241).

7. The tab pre-smoothing structure of claim 1, wherein: the edge of the pre-flattening upper plate (11) is provided with an upper rocker (111) extending towards a direction away from the pre-flattening lower plate (12), and the edge of the pre-flattening lower plate (12) is provided with a lower rocker (121) extending towards a direction away from the pre-flattening upper plate (11).

8. The tab pre-smoothing structure of claim 7, wherein: the upper rocker (111) and the lower rocker (121) are arc-shaped pieces.

9. The tab pre-smoothing structure of claim 1, wherein: the upper telescopic rod (13) and the lower telescopic rod (14) are coaxially arranged.

10. The tab pre-smoothing structure of claim 2, wherein: the device further comprises a controller, wherein the upper telescopic rod (13), the lower telescopic rod (14) and the sensor (23) are electrically connected with the controller.