阅读说明：本技术 一种极片防死褶装置 (dead fold prevention device for pole piece ) 是由 张文 李根雨 安奎明 韩好 杨泽民 任帅隆 朴成镇 于 2019-11-18 设计创作，主要内容包括：本申请提供一种极片防死褶装置,包括：支撑结构；导送机构,所述导送机构安装于所述支撑结构上；抚平机构,所述抚平机构设置在所述导送机构的一侧,所述抚平机构可调节的连接至所述支撑结构,所述抚平机构用于在极片进入所述导送机构时作用于所述极片的留白区。本申请极片防死褶装置中增设抚平机构,抚平机构可以配合导送机构,防止极片进入导送机构后过辊的过程中出现死褶。(The application provides pole piece anti-dead-fold device, which comprises a supporting structure, a guiding and feeding mechanism and a smoothing mechanism, wherein the guiding and feeding mechanism is installed on the supporting structure, the smoothing mechanism is arranged on the side of the guiding and feeding mechanism and is adjustably connected to the supporting structure, and the smoothing mechanism is used for acting on a blank area of a pole piece when the pole piece enters the guiding and feeding mechanism.)

1, kind of pole piece prevent device that dies folds, its characterized in that includes:

a support structure;

the guide mechanism is arranged on the supporting structure;

and the smoothing mechanism is adjustably connected to the supporting structure and acts on the white space of the pole piece when the pole piece enters the guide mechanism.

2. The pole piece anti-dead-fold device of claim 1, further comprising:

and the flattening mechanism is adjustably connected to the supporting structure and is used for the pole piece blank area before the pole piece enters the guide mechanism.

3. The pole piece anti-dead-fold device as claimed in claim 1, wherein the smoothing mechanism comprises a support member and a smoothing member, the smoothing member surrounds a part of the guide mechanism, and a preset gap is left between the smoothing member and the guide mechanism;

the support member is spaced from the delivery mechanism, the end of the support member secures the smoothing member, and the other end of the support member is adjustably connected to the support structure to adjust the position and angle of the smoothing member.

4. The pole piece dead fold prevention device of claim 2, wherein the flattening mechanism comprises a flattening fixing roller, and the surface of the flattening fixing roller is provided with an -th flattening structure for releasing stress of the pole piece blank area.

5. The pole piece anti-dead-fold device of claim 4, wherein the flattening is an interrupted or continuous protrusion.

6. The pole piece anti-dead-fold device of claim 5, wherein the th flattening structure is an intermittent protrusion or a continuous protrusion spirally wound around the flattening fixed roller surface.

7. The pole piece anti-dead-fold device as claimed in claim 4, wherein a th heating element is arranged in the flattening fixing roller;

and/or the presence of a gas in the gas,

the outer surface of the flattening fixing roller is provided with a second heating element, and the second heating element forms an intermittent bulge or a continuous bulge of the th flattening structure;

and/or the presence of a gas in the gas,

the flattening fixed roll outer surface is equipped with the third heating element, the third heating element is located flattening mechanism's clearance groove, the clearance groove is adjacent intermittent type arch or the clearance that forms between the continuous arch.

8. The pole piece anti-dead-fold device of any of claims 4-7 wherein the end of the flattening fixture roller distal from the support structure is a tapered structure.

9. The pole piece anti-dead-fold device of claim 4, wherein the flattening mechanism further comprises a second support shaft end mounted to the flattening adjustment slot, and another end connected to the flattening fixed roller, the flattening fixed roller being rotatable along the second support shaft.

10. The pole piece anti-dead-fold device as claimed in claim 3, wherein the surface of the smoothing piece facing the guide mechanism is formed with a second flattening structure for relieving stress of the pole piece blank area.

11. The pole piece anti-dead-fold device of claim 10, wherein the second flattening structure is an intermittent bump or a continuous bump arranged at intervals.

12. The pole piece anti-dead-fold device of claim 10 wherein the smoothing member comprises a trailing portion and a flattened portion, the flattened portion is located between the trailing portion, the trailing portion is in smooth transition connection with the flattened portion, and the flattened portion is arched in an arc shape on a side near the guide mechanism.

13. The pole piece anti-dead-fold device of claim 12 wherein the smoothing member is a plate-like structure, and the end of the pulling portion distal from the flattening portion extends curvedly away from the guide mechanism.

14. The pole piece anti-dead-fold device as claimed in claim 12 or 13, wherein the guiding mechanism comprises a roller and a th supporting shaft, the roller is sleeved on the th supporting shaft and can rotate along the th supporting shaft, and the th supporting shaft is fixedly connected with the supporting structure.

15. The pole piece anti-dead-fold device of claim 14 wherein the arcuate shape of the flattened portion corresponds to the wrap angle of the pass roll.

16. The pole piece anti-dead-fold device as claimed in claim 2, wherein the support structure is further provided with a flattening adjusting groove for adjusting and fixing the position of the flattening mechanism.

Technical Field

The application relates to the field of lithium ion battery equipment, in particular to kinds of pole piece anti-dead-fold devices.

Background

The important constituent parts of the battery are positive and negative pole pieces, foil material bearing the positive and negative pole materials is called current collector, the process of manufacturing the lithium ion battery pole piece is , the process is like that active substance, binder and conductive agent are mixed to prepare slurry, the slurry is coated on one side or two sides of the metal current collector, the solvent is removed after drying to form a dry pole piece, the pole piece particle coating is pressed and compacted by a guide mechanism, and then the pole piece is cut or divided into required size.

when the pole piece is prepared, the current collector will leave a blank area of 15-30mm, called as the pole piece blank area, after the pole piece is rolled, the blank area and the material area are not extended , the blank area is easy to generate dead fold when guiding and conveying the mechanism, which can cause the pole piece to generate indentation, fracturing, fold and other bad defects, and can affect the internal resistance of the battery.

In addition, the pole piece blank area is heated by ultrasonic waves, the problem that the extension is not is solved, but the ultrasonic wave heating can only carry out positive pole operation, copper oxide can be generated when a negative pole is used, and the quality of the pole piece blank area is influenced.

Disclosure of Invention

What this application will solve is that the pole piece leaves white district roll-in process and appears the technical problem of dead fold easily.

For solving above-mentioned technical problem, the application discloses kinds of pole pieces prevent device that dies and shirks includes:

a support structure;

the guide mechanism is arranged on the supporting structure;

the smoothing mechanism is adjustably connected to the supporting structure and is used for acting on the white space of the pole piece when the pole piece enters the guiding mechanism.

Optionally, the device further comprises a flattening mechanism adjustably connected to the support structure to act on the pole piece whitening zone before the pole piece enters the guide mechanism.

Optionally, the smoothing mechanism comprises a support member and a smoothing member, the smoothing member surrounds a part of the guide mechanism, and a preset gap is left between the smoothing member and the guide mechanism;

the support member is spaced from the delivery mechanism, the end of the support member secures the smoothing member, and the other end of the support member is adjustably connected to the support structure to adjust the position and angle of the smoothing member.

Optionally, the flattening mechanism comprises a flattening fixing roller, and the surface of the flattening fixing roller is provided with an flattening structure for releasing the stress of the pole piece blank area.

Optionally, the th flattening is an intermittent protrusion or a continuous protrusion.

Optionally, the th flattening feature is an intermittent or continuous protrusion disposed helically around the flattening fixture roll surface.

Optionally, a th heating element is arranged in the flattening fixing roller;

and/or the presence of a gas in the gas,

the outer surface of the flattening fixing roller is provided with a second heating element, and the second heating element forms an intermittent bulge or a continuous bulge of the th flattening structure;

and/or the presence of a gas in the gas,

the outer surface of the flattening fixing roller is provided with a third heating element, the third heating element is positioned in a gap groove of the th flattening mechanism, and the gap groove is a gap formed between the adjacent intermittent bulges or continuous bulges.

Optionally, the end of the flattened fixed roller distal from the support structure is a tapered structure.

Optionally, a second flattening structure is formed on the surface, facing the guiding mechanism, of the flattening piece, and the second flattening structure is used for releasing stress of the pole piece blank area.

Optionally, the second flattening structure is an intermittent protrusion or a continuous protrusion arranged at intervals.

Optionally, the smoothing member includes a traction portion and a flattening portion, the flattening portion is located between the traction portions, the traction portion is connected with the flattening portion in a smooth transition mode, and the flattening portion is in an arc shape close to the side of the guiding mechanism.

Optionally, the smoothing member is a plate-like structure, and the end of the traction portion away from the flattening portion extends in a curve away from the guiding mechanism.

Optionally, a flattening adjusting groove is further arranged on the supporting structure, and is used for adjusting and fixing the position of the flattening mechanism.

Optionally, the flattening mechanism further comprises a second support shaft, the second support shaft end is mounted in the flattening adjusting groove, the other end end is connected with the flattening fixing roller, and the flattening fixing roller can rotate along the second support shaft.

Optionally, the guiding mechanism comprises a roller and an th supporting shaft, the roller is sleeved on the th supporting shaft and can rotate along the th supporting shaft, and the th supporting shaft is fixedly connected with the supporting structure.

Optionally, the arc camber of the flattened portion corresponds to a wrap angle of the pass roll.

Adopt above-mentioned technical scheme, this application the device of preventing dead pleat of pole piece have following beneficial effect:

add in this application anti-dead fold device of pole piece and smooth mechanism, smooth mechanism and can cooperate and lead and send the mechanism, prevent that the pole piece from getting into to lead and send the in-process of passing the roller behind the mechanism and appearing the dead fold.

step by step, the pole piece anti-dead-fold device is additionally provided with the flattening mechanism before the pole piece enters the guide mechanism, the flattening mechanism can contact the bottom side of the pole piece and pull the pole piece blank leaving area to prevent the dead fold when the pole piece blank leaving area enters the roller, and meanwhile, the flattening mechanism and the flattening mechanism can act together on the upper layer and the lower layer of the pole piece to ensure that the dead fold phenomenon cannot occur in the blank leaving area of the pole piece in the roller entering and roller passing processes.

step by step, the exhibition flat mechanism of this application is equipped with heating element including the exhibition flat fixed roll in the exhibition flat fixed roll, and heating element can be adjusted through heating the extension in white district is stayed to the pole piece reaches the pole piece and stays white district and pole piece material district extension and send, guarantees that the pole piece stays white district and does not take place the dead fold.

, the supporting piece of the flattening mechanism is adjustably connected to the supporting structure, when the threading angle of the pole piece is changed, the supporting piece can be moved through the rotary adjusting groove to adjust the position and the angle of the flattening piece, the flattening plate is guaranteed to generate the anti-dead-fold effect on the blank area of the pole piece, the supporting structure is further provided with a flattening adjusting groove, the second supporting shaft end of the flattening mechanism is installed in the flattening adjusting groove, and when the threading angle of the pole piece is changed, the flattening fixing roller is guaranteed to generate the anti-dead-fold effect on the blank area of the pole piece through the flattening adjusting groove.

step by step, this application pole piece prevents that dead fold device can the direct mount in equipment, prevents that field personnel from adjusting roller level and pasting the teflon repeatedly to the problem.

Drawings

In order to more clearly illustrate the technical solutions in the embodiments of the present application, the drawings needed to be used in the description of the embodiments will be briefly introduced below, and it is obvious that the drawings in the following description are only embodiments of the present application, and it is obvious for those skilled in the art to obtain other drawings based on these drawings without creative efforts.

FIG. 1 is a schematic view of an embodiment of the present application;

FIG. 2 is a schematic view of another embodiments of the anti-dead-fold device of the present application;

FIG. 3 is a perspective view of an embodiment of the present application of a flattening fixture roll;

FIG. 4 is a front view of FIG. 3;

FIG. 5 is a schematic illustration of smoothing elements according to embodiments of the present application;

fig. 6 is a schematic view of another embodiments of the present application for a pacifier.

The following is a supplementary description of the drawings:

1-a support structure; 11-rotating the regulating groove; 12-flattening the adjustment groove;

2-a guiding mechanism, 21-a roller, 22-a th support shaft;

3-a smoothing mechanism; 31-a support; 32-a smoothing member; 321-a traction part; 322-a flattening section;

4-a flattening mechanism; 41-flattening the fixed roller; 411-edge thinning ring; 42-a second support shaft;

5-pole piece.

Detailed Description

The technical solutions in the embodiments of the present application will be described clearly and completely with reference to the drawings in the embodiments of the present application, it is obvious that the described embodiments are only partial embodiments of the present application , rather than all embodiments.

In the description of the present application, it is to be understood that the terms "upper," "lower," "top," "bottom," and the like are used herein as indicating orientations or positional relationships based on those shown in the drawings for convenience in describing the present application and simplicity in description, but do not indicate or imply that the referenced devices or elements must have a particular orientation, be constructed in a particular orientation, and be operated in a particular direction, and thus are not to be construed as limiting the present application.

In order to solve the technical problem that dead folds are easy to occur in the rolling process of a pole piece blank area in the related prior art, an embodiment of the application provides pole piece dead fold prevention devices, fig. 1 shows schematic diagrams of pole piece dead fold prevention devices in the embodiment of the application, fig. 2 shows schematic diagrams of pole piece dead fold prevention devices in another embodiment of the application, and the pole piece dead fold prevention devices in the embodiment are explained with reference to fig. 1 and fig. 2.

A pole piece anti-dead-fold device, comprising:

a support structure 1;

the guide mechanism 2 is arranged on the supporting structure 1, and the guide mechanism 2 is used for guiding the pole piece 5;

a smoothing mechanism 3, the smoothing mechanism 3 being arranged on the side of the guide mechanism 2, the smoothing mechanism 3 being adjustably connected to the support structure 1, the smoothing mechanism 3 being configured to act on the blank area of the pole piece 5 when the pole piece 5 enters the guide mechanism 2.

In this embodiment, the guiding and feeding mechanism 2 may include a roller 21 and an th supporting shaft 22, the roller 21 is sleeved on the th supporting shaft 22 and can rotate along the th supporting shaft 22, and the th supporting shaft 22 is fixedly connected to the supporting structure 1, in a possible embodiment, the guiding and feeding mechanism 2 may also integrally rotate relative to the supporting structure 1, and accordingly, the roller and the th supporting shaft are type structure.

A preset pole piece 5 feeding gap is reserved between the flattening mechanism 3 and the guide mechanism 2, after the pole piece 5 enters the guide mechanism 2, the flattening mechanism 3 is located on the top side of the pole piece 5 and acts on a blank area of the pole piece 5 to enable the blank area of the pole piece 5 to release stress, the guide mechanism 2 is located on the bottom side of the pole piece 5 to support and guide the pole piece 5, and the flattening mechanism 3 is matched with the guide mechanism 2 to prevent the pole piece 5 from being dead-folded in the process of passing through the roller 21 after entering the guide mechanism 2.

In embodiments, as shown in fig. 1 and 2, the device further comprises a flattening mechanism 4, the flattening mechanism 4 being located before the direction of guidance of the guidance mechanism 2, the flattening mechanism 4 being adjustably connected to the support structure 1 to act on the pole piece 5 to leave a white space before the pole piece 5 enters the guidance mechanism 2.

In this embodiment, the flattening mechanism 4 is arranged in front of the flattening mechanism 3 along the feeding direction of the pole piece 5, the flattening mechanism 4 and the guiding mechanism 2 are located on the same side of the flattening mechanism 3, that is, the flattening mechanism 4 and the guiding mechanism 2 are located on the bottom side of the pole piece 5, the moving direction of the flattening mechanism 4 and the moving direction of the guiding mechanism 2 are the same, the flattening mechanism 4 can contact the bottom side of the pole piece 5 and pull the pole piece 5 blank area, so as to prevent the blank area of the pole piece 5 from generating dead folds when entering the roll, the flattening mechanism 3 and the flattening mechanism 4 can act together on the upper layer and the lower layer, and the blank area of the pole piece 5 is ensured not to generate the dead folds in the processes of entering the roll and passing the roll 21.

The feeding direction of a pole piece 5 of the whole pole piece anti-dead-fold device is that the pole piece 5 firstly passes through the flattening mechanism 4 and then enters the guiding and conveying mechanism 2, and then the pole piece 5 enters between the flattening mechanism 3 and the guiding and conveying mechanism 2.

The arrangement number of the flattening mechanisms 3 and the flattening mechanisms 4 is flexibly selected according to the number of the dead fold prevention requirements of the blank areas of the pole pieces 5, and as shown in fig. 1, the flattening mechanisms 3 and the flattening mechanisms 4 are only arranged in the blank areas on one side of the pole pieces 5; as shown in fig. 2, the smoothing mechanism 3 and the flattening mechanism 4 are arranged in pairs in the left and right blank areas of the pole piece 5.

In , as shown in fig. 1 and 2, the smoothing mechanism 3 includes a support 31 and a smoothing member 32, the smoothing member 32 embraces part of the guide mechanism 2, and a preset gap is left between the smoothing member 32 and the guide mechanism 2;

the supporting member 31 is arranged at a distance from the guiding mechanism 2, ends of the supporting member 31 fix the smoothing member 32, and the other ends of the supporting member 31 are adjustably connected to the supporting structure 1 to adjust the position and angle of the smoothing member 32.

In this embodiment, the smoothing member 32 embraces part of the guiding mechanism 2, which is understood to mean that the smoothing member 32 is wrapped or surrounded and the roller of the guiding mechanism 2 maintains the preset gap, which is used for passing through the pole piece.

In , as shown in fig. 1 and 2, the support structure 1 is provided with a rotation adjustment slot 11, the end of the support member 31 is adjustably mounted on the rotation adjustment slot 11, when the threading angle of the pole piece is changed, the support member 31 can be moved through the rotation adjustment slot 11 to adjust the position and angle of the smoothing member 32, so as to ensure that the smoothing plate has an anti-dead-fold effect on the blank area of the pole piece.

In examples, referring to fig. 1 and 2, the flattening mechanism 4 includes a flattening fixing roller 41, and the surface of the flattening fixing roller 41 is provided with a flattening structure for releasing the stress of the pole piece blank area.

In , the flattened structure is an interrupted bump or a continuous bump.

Fig. 3 shows a perspective view of an embodiment flattening fixed roller of the present application, and fig. 4 is a front view of fig. 3.

Specifically, as shown in fig. 3 and 4, the th flattening structure can be a continuous bulge spirally wound on the surface of the flattening fixing roller, wherein the cross section (also understood as a cross section) of the continuous bulge can be in the shape of a semicircle, a triangle, a rectangle, a trapezoid, a sector and the like.

In other possible embodiments, the th flattening structure can be discontinuous protrusions spirally wound on the surface of the flattening fixed roller, the discontinuous protrusions can be in the form of any or permutation combination of convex points and convex line segments, the convex points can be in the shape of round points, or in the shape of triangles, or quadrangles, and the cross section of the convex line segments can be in the shape of semi-circles, triangles, rectangles, sectors, and the like.

In embodiments, a th heating element is arranged in the flattening fixing roller, and the th heating element is used for heating and adjusting the extension of the pole piece blank region to reach the pole piece blank region and the pole piece material region extension , so as to ensure that the pole piece blank region is not subjected to dead-fold.

In embodiments, the outer surface of the flattening fixing roll may further be provided with a second heating element, the second heating element forms an intermittent protrusion or a continuous protrusion of the th flattening structure, the second heating element is also used for heating and adjusting the extension of the pole piece blank region, so as to reach the extension of the pole piece blank region and the pole piece material region, and ensure that the pole piece blank region does not have a dead fold.

In embodiments, the flattening fixing roller is provided with a third heating element on its outer surface, the third heating element is located in a gap groove of the flattening mechanism 4, the gap groove is a gap formed between adjacent intermittent protrusions or continuous protrusions, the third heating element is also used for heating and adjusting the extension of the pole piece blank region, so as to reach the pole piece blank region and the pole piece material region extension , and ensure that the pole piece blank region does not have dead folds.

In this embodiment, the third heating element is arranged below the highest point of the intermittent protrusion or the continuous protrusion, so as to ensure that the third heating element does not interfere with the operation of the flattening structure.

In examples, referring to fig. 1-4, the end of the flattening fixture roller away from the support structure 1 is tapered to prevent scratching of the pole piece surface.

Specifically, as shown in fig. 3 and 4, the end of the flattening fixed roller far away from the support structure 1 is subjected to thinning to generate the edge thinning ring 411, the thinning width of the edge thinning ring 411 is 1/20 of the diameter of the flattening fixed roller, and the thinning thickness is 1/20 of the diameter of the flattening fixed roller.

In , as shown in fig. 1 and 2, the support structure 1 is further provided with a flattening adjustment groove 12 for adjusting and fixing the position of the flattening mechanism 4.

In , the flattening mechanism 4 further comprises a second support shaft 42, the second support shaft 42 is mounted at the end of the flattening adjustment groove 12, the other end is connected with the flattening fixing roller 41, and the flattening fixing roller 41 can rotate along the second support shaft 42, when the threading angle of the pole piece is changed, the flattening adjustment groove 12 can be used for ensuring that the flattening fixing roller 41 can generate the anti-dead-fold effect on the pole piece blank area.

Fig. 5 shows a schematic view of appliques of an embodiment, and fig. 6 shows a schematic view of another appliques of an embodiment.

Referring to fig. 5 and 6, a second flattening structure is formed on the surface of the smoothing member facing the guide mechanism 2, and the second flattening structure is used for releasing the stress of the pole piece blank area. The second flattening structure is located in a partial area of the flattening piece.

, the second flattening structure can be an intermittent protrusion or a continuous protrusion disposed at intervals, and the second flattening structure can be referred to the structure of the flattening structure, which is not described herein again.

Specifically, as shown in fig. 5 and 6, the second flattening structure can be an internal spiral line, and the stress release can be performed in the area with uneven stress in the pole piece blank area under the action of the internal spiral line of the flattening plate, so that the phenomenon of dead folds during roll passing is avoided.

In , as shown in fig. 5 and 6, the smoothing member includes a drawing part 321 and a flattening part 322, the flattening part 322 is located between the drawing parts 321, the drawing part 321 is smoothly connected with the flattening part 322 in a transition way, the flattening part 322 is arc-shaped near the side of the guiding mechanism 2, the inner contour of the flattening part 322 matches with the outer contour of the roller of the guiding mechanism 2.

In this embodiment, the second flattening structure is disposed on the inner surface of the flattening portion 322.

In , the smoothing member is a plate-like structure, and the end of the pulling portion 321 away from the flattening portion 322 bends and extends away from the guiding mechanism 2.

In this embodiment, referring to fig. 1, fig. 2, fig. 5, and fig. 6, when the end of the traction portion 321 away from the flattening portion 322 bends away from the guiding mechanism 2, it can be understood that the free end of the traction portion 321 sticks outward in the opposite direction, the connection position between the traction portion 321 and the flattening portion 322 is prevented from wearing the pole piece blank region, and the pole piece blank region is prevented from directly colliding with the flattening portion 322 during operation, which causes the strip breakage of the pole piece.

In the embodiments, the flattening portion is a plate-shaped structure, the flattening portion can be designed into different angles according to requirements, the arc shape of the flattening portion corresponds to the wrap angle of the roller, the flattening portion can be used for different wrap angles of the roller, and the dead fold prevention function is provided.

In conclusion, upon reading the present detailed disclosure, those skilled in the art will appreciate that the foregoing detailed disclosure can be presented by way of example only, and not limitation. Those skilled in the art will appreciate that the present application is intended to cover various reasonable variations, adaptations, and modifications of the embodiments described herein, although not explicitly described herein. Such alterations, improvements, and modifications are intended to be suggested by this disclosure, and are within the spirit and scope of the exemplary embodiments of this disclosure.

For example, " embodiments," "embodiments," and/or " embodiments" means that a particular feature, structure, or characteristic described in connection with the embodiment may be included in at least embodiments of the present disclosure.

It should be appreciated that in the foregoing description of embodiments of the disclosure, various features are sometimes grouped together in a single embodiment, figure, or description thereof for the purpose of streamlining the disclosure, or they may be grouped together in a single embodiment, figure, or description thereof for the purpose of streamlining the disclosure.

In embodiments, numbers expressing quantities or properties used to describe and claim certain embodiments of the application are to be understood as modified in some instances by the terms "about", "approximately" or "substantially". The terms such as "about", "approximately" or "substantially" may mean a variation of ± 20% of the value it describes.

For example, if a document is now or later associated with this document, if any term associated with any of the included materials is described, defined, and/or used that is not or conflict with any term associated with this document, the term in this document shall be used to control the operation of the document.

Finally, it should be understood that the embodiments of the application disclosed herein are illustrative of the principles of the embodiments of the present application. Other modified embodiments are also within the scope of the present application. Accordingly, the disclosed embodiments are presented by way of example only, and not limitation. Those skilled in the art may implement the present application in alternative configurations according to the embodiments of the present application. Thus, embodiments of the present application are not limited to those embodiments described with accuracy in the application.