CN115528310A

CN115528310A - Lamination device

Info

Publication number: CN115528310A
Application number: CN202210261578.7A
Authority: CN
Inventors: 不公告发明人
Original assignee: Wuxi Lead Intelligent Equipment Co Ltd
Current assignee: Wuxi Lead Intelligent Equipment Co Ltd
Priority date: 2022-03-16
Filing date: 2022-03-16
Publication date: 2022-12-27

Abstract

The invention relates to lamination equipment which comprises a lamination mechanism, a belt conveying mechanism and a cutting mechanism. The output end of the tape deck is provided with a clamping assembly, and the clamping assembly can clamp or release the diaphragm. After a battery core is stacked, the clamping assembly clamps the diaphragm to keep tension, and the cutting mechanism cuts off the diaphragm between the output end of the tape conveying mechanism and the lamination table. Because the clamping assembly is arranged at the output end of the tape transport mechanism, the length of a free section formed after the diaphragm is cut off is smaller. When laminating of the next battery cell is carried out, the laminating table firstly moves relative to the tape transport mechanism along the preset direction, and the free section of the diaphragm can pass through the bearing surface. As the lamination table continues to move, the clamping assembly releases the membrane, which can gradually flatten against the bearing surface. Therefore, when the diaphragm is introduced into the lamination table again, a back blowing mechanism is not needed to blow, and the diaphragm can keep higher flatness, so that the quality of the battery core can be improved.

Description

Lamination device

Technical Field

The invention relates to the technical field of lithium battery equipment, in particular to lamination equipment.

Background

The preparation of the battery core of the lithium battery needs to stack the positive plate and the negative plate alternately, and the positive plate and the negative plate are separated by a diaphragm. The Z-shaped lamination process is that the cut pole pieces are sequentially placed on a lamination table, and one layer of the diaphragm is folded and covered when one pole piece diaphragm is placed, so that the diaphragm forms a Z shape. The separator used in the Z-lamination process is continuous and needs to be cut after one cell is stacked. After the separator is cut, the resulting cells will be transferred to the next process and processed, and the cut separator needs to be pulled again onto the lamination table for the next cell stack.

However, the diaphragm after cutting will form a free length of a relatively long section, which is in a free-sagging state. In order to enable the sagging free section to fall onto the lamination table again, the existing lamination equipment generally blows the free section to the surface of the lamination table by blowing air to the diaphragm. However, the randomness of the blowing process is high, which easily causes the membrane to have abnormal phenomena such as wrinkles, deviation, flanging and the like, and further influences the quality of the battery cell.

Disclosure of Invention

In view of the above, it is necessary to provide a lamination apparatus capable of improving the quality of a cell obtained by lamination.

A lamination apparatus, comprising:

the lamination mechanism comprises a lamination table, and the lamination table is provided with a bearing surface;

the uncoiled diaphragm can wind through the tape transport mechanism and is output by the output end of the tape transport mechanism, the output end of the tape transport mechanism is provided with a clamping assembly, and the clamping assembly can clamp or release the diaphragm;

the sheet taking mechanism is used for placing the pole piece on the bearing surface; and

the cutting mechanism can cut off the diaphragm between the output end of the tape conveying mechanism and the lamination table;

the lamination table and the tape transport mechanism can relatively reciprocate along a preset direction in the lamination process, the clamping assembly releases the diaphragm, and the sheet taking mechanism sequentially places pole pieces on the diaphragm so as to enable the diaphragm output by the tape transport mechanism to be subjected to Z-shaped laying on the bearing surface; after lamination is completed, the clamping assembly clamps the diaphragm, and the diaphragm is cut off by the cutting mechanism.

In one embodiment, the lamination mechanism further comprises a pressing assembly, and the pressing assembly comprises a pressing state capable of pressing the pole piece and the diaphragm on the bearing surface and a position avoiding state capable of avoiding the bearing surface.

In one embodiment, the lamination mechanism further comprises a suction plate, the suction plate is located on one side of the lamination table in the preset direction, and the suction plate is provided with a suction surface capable of sucking the diaphragm.

In one embodiment, the suction plate is provided with suction holes capable of generating negative pressure on the suction surface, and the suction holes are distributed on the edge of one side of the suction plate close to the lamination table.

In one embodiment, the lamination mechanism further comprises a deviation-rectifying driving assembly, and the deviation-rectifying driving assembly is in transmission connection with the suction plate and can drive the suction plate to move in a direction parallel to the bearing surface.

In one embodiment, the carrying surface is provided with a plurality of avoiding openings for the carrying clamping jaws to extend into.

In one embodiment, the lamination mechanism further comprises a filling assembly, the filling assembly comprises filling plates and a filling driving member, the filling plates correspond to the avoidance ports one by one, and the filling driving member can drive the filling plates to enter the avoidance ports and be in the same plane with the bearing surface, and can drive the filling plates to expose the avoidance ports.

In one embodiment, the lamination stacking device further comprises a jacking mechanism, the lamination stacking mechanism is arranged at the driving end of the jacking mechanism, and the jacking mechanism can drive the lamination stacking mechanism to move in the up-down direction.

In one embodiment, the clamping assembly comprises a first conveying roller and a second conveying roller which can rotate, the rotation axes of the first conveying roller and the second conveying roller are parallel, the diaphragm can pass through the first conveying roller and the second conveying roller, and the distance between the first conveying roller and the second conveying roller is adjustable to clamp or release the diaphragm.

In one embodiment, the deck includes a bracket, the clamping assembly further includes a clamping driving member and a mounting plate, the mounting plate is disposed at a driving end of the clamping driving member, the first transport roller is rotatably mounted on the bracket, the second transport roller is rotatably mounted on the mounting plate, and the clamping driving member can drive the mounting plate to move so as to adjust a distance between the first transport roller and the second transport roller.

In one embodiment, the cutting position of the cutting mechanism is located at one end of the diaphragm close to the output end of the deck.

According to the lamination equipment, after one battery cell is stacked, the clamping assembly clamps the diaphragm to keep tension, and the cutting mechanism cuts off the diaphragm between the output end of the tape transport mechanism and the lamination table. Because the clamping component is arranged at the output end of the tape transport mechanism, the length of a free section formed after the diaphragm is cut off is smaller. When laminating of the next battery cell is carried out, the laminating table firstly moves relative to the tape transport mechanism along the preset direction, and the free section of the diaphragm can pass through the bearing surface. As the lamination table continues to move, the clamping assembly releases the membrane, which can gradually flatten against the bearing surface. Therefore, when the diaphragm is introduced into the lamination table again, a back blowing mechanism is not needed to blow, and the diaphragm can keep higher flatness, so that the quality of the battery core can be improved.

Drawings

In order to more clearly illustrate the embodiments of the present application or the technical solutions in the prior art, the drawings used in the description of the embodiments or the prior art will be briefly described below, it is obvious that the drawings in the following description are only some embodiments of the present application, and for those skilled in the art, other drawings can be obtained according to the drawings without creative efforts.

FIG. 1 is a front view of a lamination apparatus in accordance with a preferred embodiment of the present invention;

FIG. 2 is a front view of a lamination mechanism in the lamination apparatus shown in FIG. 1;

FIG. 3 is a partial top view of the lamination mechanism of FIG. 2 including a lamination station;

FIG. 4 is a left side view of a deck of the laminating apparatus shown in FIG. 1;

FIG. 5 is a bottom view of the deck of FIG. 4;

fig. 6 to 9 are schematic views illustrating a state change of the lamination apparatus shown in fig. 1 during lamination.

Detailed Description

In order to make the aforementioned objects, features and advantages of the present invention comprehensible, embodiments accompanied with figures are described in detail below. In the following description, numerous specific details are set forth in order to provide a thorough understanding of the present invention. This invention may, however, be embodied in many different forms and should not be construed as limited to the embodiments set forth herein, as those skilled in the art will recognize without departing from the spirit and scope of the present invention.

In the description of the present invention, it is to be understood that the terms "central," "longitudinal," "lateral," "length," "width," "thickness," "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," "outer," "clockwise," "counterclockwise," "axial," "radial," "circumferential," and the like are used in the orientations and positional relationships indicated in the drawings for convenience in describing the invention and to simplify the description, and are not intended to indicate or imply that the referenced device or element must have a particular orientation, be constructed and operated in a particular orientation, and are not to be considered limiting of the invention.

Furthermore, the terms "first", "second" and "first" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include at least one such feature. In the description of the present invention, "a plurality" means at least two, e.g., two, three, etc., unless specifically limited otherwise.

In the present invention, unless otherwise expressly stated or limited, the terms "mounted," "connected," "secured," and the like are to be construed broadly and can, for example, be fixedly connected, detachably connected, or integrally formed; can be mechanically or electrically connected; they may be directly connected or indirectly connected through intervening media, or they may be connected internally or in any other suitable relationship, unless expressly stated otherwise. The specific meanings of the above terms in the present invention can be understood by those skilled in the art according to specific situations.

In the present invention, unless otherwise expressly stated or limited, the first feature "on" or "under" the second feature may be directly contacting the first and second features or indirectly contacting the first and second features through an intermediate. Also, a first feature "on," "over," and "above" a second feature may be directly or diagonally above the second feature, or may simply indicate that the first feature is at a higher level than the second feature. A first feature being "under," "below," and "beneath" a second feature may be directly under or obliquely under the first feature, or may simply mean that the first feature is at a lesser elevation than the second feature.

It will be understood that when an element is referred to as being "secured to" or "disposed on" another element, it can be directly on the other element or intervening elements may also be present. When an element is referred to as being "connected" to another element, it can be directly connected to the other element or intervening elements may also be present. As used herein, the terms "vertical," "horizontal," "upper," "lower," "left," "right," and the like are for purposes of illustration only and do not denote a single embodiment.

Referring to fig. 1, a laminating apparatus 10 according to a preferred embodiment of the present invention includes a laminating mechanism 100, a tape transport mechanism 200, a sheet taking mechanism (not shown), and a cutting mechanism 300.

Lamination mechanism 100 enables stacking of pole pieces and membranes. Specifically, the pole pieces include a positive pole piece and a negative pole piece, which can be alternately stacked on the stacking mechanism 100, and the diaphragm is disposed between the adjacent positive pole piece and the negative pole piece.

Referring to fig. 2, the lamination mechanism 100 includes a lamination table 110 and a suction plate 120. The lamination stage 110 is generally a plate-shaped structure formed of a material having high mechanical strength, such as metal, and may have a rectangular shape. The lamination stage 110 has a carrying surface for carrying the pole pieces and the separator. When the lamination machine is used specifically, the bearing surface of the lamination table 110 faces upward, and the sheet taking mechanism can obtain a pole piece and place the pole piece on the bearing surface.

The suction plate 120 is disposed at one side of a predetermined direction of the lamination stage 110, which is a left-right direction shown in fig. 2. The suction plate 120 has an adsorption surface capable of adsorbing the diaphragm. Wherein, the orientation of the adsorption surface is consistent with that of the bearing surface and is approximately flush with the bearing surface. The adsorption surface can adsorb the diaphragm in a vacuum adsorption or electrostatic adsorption mode.

As shown in fig. 3, in the present embodiment, the suction plate 120 has suction holes 121 formed on the suction surface, and the suction holes 121 can generate negative pressure on the suction surface, so as to suck the diaphragm through vacuum suction.

The tape deck 200 is located above the carrying surface of the lamination table 110, and the unwound separator 11 can be wound around the tape deck 200 and output from the output end of the tape deck 200. The deck 200 extends generally in an up-down direction with the input end at the upper end and the output end at the lower end. Specifically, the lamination device 10 further includes an unwinding mechanism 400, and the unwinding mechanism 400 may be a tension shaft. The rolled separator 11 may be wound around the unwinding mechanism 400 in advance, and may be continuously unwound from the unwinding mechanism 400 to the tape transport mechanism 200. In addition, in other embodiments, the diaphragm 11 may be output from the previous process and directly enter the deck 200.

The tape transport 200 is generally used for tension control and adjustment of the orientation of the strip of film 11. Moreover, the separator 11 outputted from the tape deck 200 can be laid on the carrying surface of the lamination table 110, so as to separate two adjacent pole pieces. Specifically, the lamination table 110 and the tape transport mechanism 200 can relatively reciprocate along a preset direction, and the sheet taking mechanism is matched to sequentially place pole pieces on the surface of the diaphragm, so that the diaphragm 11 output by the tape transport mechanism 200 can be Z-shaped laid on the bearing surface, and the stacking of the battery cells is completed.

Further, the output end of the deck 200 is provided with a clamping assembly 210, and the clamping assembly 210 can clamp or release the diaphragm 11. The clamping assembly 210 may be configured to clamp the diaphragm 11 while blocking the diaphragm 11 at the output end of the deck 200. When the clamping assembly 210 releases the diaphragm 11, the diaphragm 11 can be smoothly output from the output end of the deck 200.

During the lamination process, the lamination table 110 may be kept stationary and the tape deck 200 may be moved back and forth in a predetermined direction, and the clamping assembly 210 releases the membrane 11, so that the tape deck 200 pulls the membrane 11 to be laid on the carrying surface of the lamination table 110. Specifically, the sheet taking mechanism alternately places the positive electrode sheet and the negative electrode sheet on the diaphragm 11 of the lamination table 110, and once a sheet is placed, the tape transport mechanism 200 acts once and pulls the diaphragm 11 to cover the sheet, so that the sheet is arranged between the adjacent diaphragms 11; the above operations are repeated until the number of stacked pole pieces reaches the required number of layers, so that the preparation of one battery cell can be completed, and the diaphragm 11 laid on the lamination table 110 is folded into a Z shape. After lamination is complete, the clamping assembly 210 clamps the diaphragm 11.

Obviously, during the lamination process, the deck 200 may be kept still while the lamination table 110 is moved back and forth in a predetermined direction.

Referring to fig. 4 and 5, in the present embodiment, the clamping assembly 210 includes a first conveyor roller 211 and a second conveyor roller 212, the rotation axes of the first conveyor roller 211 and the second conveyor roller 212 are parallel, the diaphragm 11 can pass between the first conveyor roller 211 and the second conveyor roller 212, and the distance between the first conveyor roller 211 and the second conveyor roller 212 is adjustable to clamp or release the diaphragm 11.

Specifically, the rotation axes of the first conveyor roller 211 and the second conveyor roller 212 are generally perpendicular to the predetermined direction and parallel to the carrying surface of the lamination table 110. The first conveyor roller 211 and the second conveyor roller 212 are close to each other to clamp the diaphragm 11, and are away from each other to release the diaphragm 11. Since the contact surfaces of the first conveying roller 211 and the second conveying roller 212 with the diaphragm 11 are arc-shaped surfaces, the diaphragm 11 is not easily damaged when the diaphragm 11 is clamped. When the diaphragm 11 is output from the output end of the deck 200, the first conveyor roller 211 and the second conveyor roller 212 can rotate the diaphragm 11, and the friction force against the diaphragm 11 can be reduced.

Further, in this embodiment, the tape deck 200 includes a bracket 220, the clamping assembly 210 further includes a clamping driving member 213 and a mounting plate 214, the mounting plate 214 is disposed at a driving end of the clamping driving member 213, the first feeding roller 211 is rotatably mounted on the bracket 220, the second feeding roller 212 is rotatably mounted on the mounting plate 214, and the clamping driving member 213 can drive the mounting plate 214 to move, so as to adjust a distance between the first feeding roller 211 and the second feeding roller 212.

Specifically, the clamp driving member 213 may be an air cylinder, and may be fixed to the bracket 220 by an air cylinder connecting plate (not shown). Accordingly, the clamp driving member 213 can drive the second conveying roller 212 to move by the mounting plate 214, thereby adjusting the distance between the first conveying roller 211 and the second conveying roller 212. Thus, the state of the clamping assembly 210 can be automatically adjusted conveniently.

In order to make the second conveying roller 212 more stable in the moving process, two mounting plates 214 are respectively arranged at two ends of the bracket 220 along the longitudinal direction of the second conveying roller 212, and the two mounting plates 214 are respectively connected with the driving end of a clamping driving member 213. Obviously, in other embodiments, the clamping assembly 210 may also take the form of a clamp plate or the like.

Further, the deck 200 comprises a roller 230, the roller 230 being located at the input end of the deck 200 and being rotatably mounted to the frame 220. The diaphragm 11 entering the deck 200 passes around the rollers 230 and then through the clamping assembly 210.

The cutting mechanism 300 is capable of cutting the diaphragm 11 between the output end of the deck 200 and the lamination station 110. Specifically, the cutting mechanism 300 includes a cutting driving member 310 and a cutting blade 320, and the cutting driving member 310 may be an air cylinder, an electric cylinder or a transmission structure matching with the air cylinder, and drives the cutting blade 320 to perform a cutting operation on the diaphragm 11. Obviously, the cutting mechanism 300 may perform the cutting operation on the diaphragm 11 by hot cutting or other means.

After a cell is stacked, the clamping assembly 210 clamps the diaphragm, the cutting mechanism 300 can cut off the diaphragm 11 between the output end of the tape transport mechanism 200 and the lamination table 110, and the cell can be smoothly moved to the next process.

The lamination process of the lamination apparatus 10 will be briefly described with reference to fig. 6 to 9:

when one cell is stacked, the tape deck 200 moves to the right side (or the left side in other cases) of the lamination table 100, and the state of the lamination apparatus 10 is shown in fig. 6; the clamping assembly 210 clamps the membrane 11 and the cutting mechanism 300 cuts the membrane 11, and the state of the lamination apparatus 10 is shown in fig. 7. Since the clamping assembly 210 is disposed at the output end of the tape deck 200 and is closer to the lamination table 110, it can be seen that the length of the free section formed after the diaphragm 11 is cut off is smaller, and only a very small section of the free section protrudes from the clamping assembly 210; next, the deck 200 moves leftward, and the free end of the diaphragm 11 passes over the suction plate 120 and is sucked by the suction surface, and the state of the lamination apparatus 10 is as shown in fig. 8; as the deck 200 continues to move to the left, the gripper assembly 121 releases the diaphragm 11 and the diaphragm 11 pulls out and gradually flattens against the load-bearing surface, with the lamination apparatus 10 in the condition shown in fig. 9. As can be seen, the cut separator 11 is again pulled to the lamination station 110, ready for the next cell stack. When the next cell stack is to be made, the clamping assembly 121 releases the membrane 11 so that the membrane 11 can be Z-laid on the carrying surface.

It should be noted that in other embodiments, the suction plate 120 may be omitted and the gravity and friction between the bearing surface and the membrane 11 may be used to pull the membrane 11 out of the output end of the deck 200.

Referring to fig. 1 again, in the present embodiment, the cutting position of the cutting mechanism 300 is located at one end of the diaphragm close to the output end of the deck 200.

Specifically, the diaphragm 11 is not cut, and extends from the output end of the deck 200 to the lamination stage 110. Thus, the diaphragm 11 between the deck 200 and the lamination station 110 may define a first end near the deck 200 and a second end near the lamination station 110. The cutting mechanism 300 is disposed near the output end of the deck 200 so that the cutting position of the cutting mechanism 300 is as close as possible to the first end of the diaphragm 11. In this way, the length of the free segment formed after the cutting of the separator 11 is further shortened. The cutting mechanism 300 may be disposed close to the output end of the tape transport mechanism 200, or may be directly disposed at the output end of the tape transport mechanism 200.

The adsorption holes 121 of the adsorption plate 120 may be distributed over the entire adsorption surface or may be distributed only in a part of the adsorption surface in order to adsorb the diaphragm 11. Referring to fig. 3 again, in the present embodiment, the suction holes 121 are distributed on the edge of the suction plate near the lamination stage 110. For example, the suction holes 121 on the suction plate 120 on the left side of the lamination table 110 are distributed on the edge on the right side of the suction plate 120, and the suction holes 121 on the suction plate 120 on the right side of the lamination table 110 are distributed on the edge on the left side of the suction plate 120.

In this way, only a small portion of the diaphragm 11 is adsorbed on the suction plate 120 in the process in which the diaphragm 11 is drawn to the lamination stage 110. Therefore, the waste of the diaphragm 11 is not caused on the premise of ensuring the quality of the battery cell. Specifically, the adsorption holes 121 may be a plurality of independent circular holes or square holes, and the plurality of adsorption holes 121 are spaced apart along the edge of the adsorption plate 120. In addition, the suction holes 121 may be strip-shaped holes extending along the edge of the suction plate 120.

Referring to fig. 1 again, in the present embodiment, the lamination mechanism 100 further includes a deviation-correcting driving element 140, and the deviation-correcting driving element 140 is in transmission connection with the suction plate 120 and can drive the suction plate 120 to move along a direction parallel to the carrying surface.

The deviation rectifying driving assembly 140 can drive the suction plate 120 to move, so as to adjust the relative position of the membrane 11 adsorbed by the suction plate 120 and the bearing surface. For example, the deviation correcting driving assembly 140 can drive the suction plate 120 to move in the left-right direction shown in FIG. 3. By adjusting the position of the diaphragm 11 relative to the bearing surface, the diaphragm 11 can be flatly laid at the middle position of the lamination table 110, thereby contributing to further improving the quality of the stacked battery cells. Specifically, the deviation correcting driving assembly 140 may be an air cylinder, an electric cylinder, and a carrying platform and a transmission structure cooperating with the air cylinder and the electric cylinder.

Referring to fig. 2 again, in the present embodiment, the lamination mechanism 100 further includes a pressing assembly 130, and the pressing assembly 130 includes a pressing state capable of pressing the pole piece and the diaphragm on the bearing surface and a position-avoiding state capable of avoiding a position of the bearing surface. When the pressing assembly 130 is in the avoiding state, the pole piece and the diaphragm 11 can be conveniently and normally placed; when the compressing assembly 130 is in a compressing state, the stacked pole pieces and the diaphragm 11 can be prevented from loosening or shifting.

Specifically, the pressing assembly 130 generally includes a pressing blade 131 and a pressing driving member 132 disposed at an edge of the lamination table 110, and the pressing driving member 132 can drive the pressing blade 131 to move along a direction parallel to the bearing surface and a direction perpendicular to the bearing surface, so as to switch the pressing assembly 130 between the pressing state and the avoiding state. For a rectangular lamination table 110, the pressing knives 131 are preferably distributed at four top corners of the lamination table 110.

After the cell stack is completed, the cell on the carrying surface is generally grabbed by a carrying clamping jaw (not shown) and carried to the next station for other processes. However, the battery core is easily scattered, even damaged, to the good battery core clamp of in-process of snatching the battery core of transport clamping jaw.

To avoid this problem, referring to fig. 3 again, in the present embodiment, the carrying surface is provided with a plurality of avoiding openings 111 for the carrying clamping jaws to extend into.

The position avoiding opening 111 is generally in a strip shape, and at least one end of the position avoiding opening 111 extends to the side surface of the lamination table 110, so that the carrying clamping jaw can conveniently extend into the position avoiding opening. So, the transport clamping jaw can stretch into the downside to electric core by keeping away a mouthful 111 earlier when snatching electric core, again along upper and lower both sides centre gripping electric core, alright reduce the harm that causes electric core.

Because the carrying surface is provided with a plurality of avoiding openings 111, the carrying surface is not a complete plane. Therefore, the pressure applied during lamination may cause the position-avoiding opening 111 to generate indentation on the surface of the finally obtained cell, or even directly crush the cell.

To avoid this problem, in the embodiment, the lamination mechanism 100 further includes a filling assembly (not shown), the filling assembly includes a filling plate 151 and a filling driving member (not shown), the filling plates 151 correspond to the position-avoiding openings 111 one by one, the filling driving member can drive the filling plates 151 to enter the corresponding position-avoiding openings 111 and to be in the same plane with the bearing surface, and can drive the filling plates 151 to expose the position-avoiding openings 111.

Each filling-up plate 151 is in a strip shape and is matched with the avoiding opening 111 in shape. The plurality of replenishing plates 151 may be driven by one replenishing driving member or may be driven by a plurality of replenishing driving members individually. In the process of stacking the battery cells, the filling driving member may drive the multiple filling plates 151 to move, and the multiple filling plates 151 enter the corresponding avoiding openings 111. Because the surface of the filling-up plate 151 and the bearing surface are in the same plane, the filling-up plate 151 can fill up the avoiding opening 112, so as to form a complete plane by matching with the bearing surface. Therefore, the indentation on the surface of the prepared battery cell can be avoided.

When the battery cell is stacked and needs to be transferred by the carrying clamping jaw, the filling driving piece drives the filling plate 151 to expose the avoiding opening 112. At this time, the carrying clamping jaw can smoothly extend into the avoiding opening 111 to clamp the battery cell along the upper and lower sides.

Referring to fig. 1 and fig. 2 again, in the present embodiment, the lamination device 10 further includes a jacking mechanism 500, the lamination mechanism 100 is disposed at a driving end of the jacking mechanism 500, and the jacking mechanism 500 can drive the lamination mechanism 100 to move in an up-and-down direction.

The jacking mechanism 500 may be a pneumatic cylinder or a motor screw pair. The battery cores of different models have different layers and thicknesses. Therefore, when different types of battery cells are stacked, the overall height of the lamination mechanism 100 can be adjusted as required.

In the lamination device 10, after a cell is stacked, the clamping assembly 210 clamps the diaphragm 11 to maintain tension, and the cutting mechanism 300 cuts the diaphragm 11 between the output end of the tape deck 200 and the lamination table 110. Since the clamping assembly 210 is provided at the output end of the deck 200, the length of the free section formed by cutting the diaphragm 11 is small. When the lamination of the next cell is carried out, the lamination table 110 moves relative to the tape deck 200 along the preset direction, and the free section of the diaphragm 11 can pass through the bearing surface. As the lamination table 110 continues to move, the clamping assembly 210 releases the membrane 11, and the membrane 11 may gradually flatten against the bearing surface. Therefore, when the diaphragm 11 is introduced into the lamination table again, a back blowing mechanism is not required to blow air, and the diaphragm 11 can keep high flatness, so that the quality of the battery cell can be improved.

The technical features of the embodiments described above may be arbitrarily combined, and for the sake of brevity, all possible combinations of the technical features in the embodiments described above are not described, but should be considered as being within the scope of the present specification as long as there is no contradiction between the combinations of the technical features.

The above-mentioned embodiments only express several embodiments of the present invention, and the description thereof is more specific and detailed, but not construed as limiting the scope of the invention. It should be noted that, for a person skilled in the art, several variations and modifications can be made without departing from the inventive concept, which falls within the scope of the present invention. Therefore, the protection scope of the present patent shall be subject to the appended claims.

Claims

1. A lamination apparatus, comprising:

2. The lamination apparatus according to claim 1, wherein the lamination mechanism further comprises a pressing assembly, the pressing assembly including a pressing state capable of pressing the pole piece and the diaphragm against the bearing surface and a position-avoiding state capable of avoiding a position of the bearing surface.

3. The lamination device according to claim 1, wherein the lamination mechanism further includes a suction plate located on one side of the lamination table in the preset direction, and the suction plate has a suction surface capable of sucking a diaphragm.

4. The lamination device according to claim 3, wherein the suction plate is provided with suction holes capable of generating negative pressure on the suction surface, and the suction holes are distributed on the edge of the suction plate close to one side of the lamination table.

5. The laminating apparatus of claim 3, wherein the laminating mechanism further comprises a de-skew drive assembly, the de-skew drive assembly being in driving communication with the suction plate and being capable of moving the suction plate in a direction parallel to the carrying surface.

6. The laminating device of claim 1, wherein the carrying surface defines a plurality of clearance openings for the carrying jaws to extend into.

7. The laminating device according to claim 6, wherein the laminating mechanism further comprises a filling assembly, the filling assembly comprises a filling plate and a filling driving member, a plurality of filling plates correspond to the clearance openings one by one, and the filling driving member can drive the plurality of filling plates to enter the corresponding clearance openings and be in the same plane with the bearing surface, and can drive the plurality of filling plates to expose the clearance openings.

8. The lamination apparatus according to claim 1, further comprising a jacking mechanism, wherein the lamination mechanism is disposed at a driving end of the jacking mechanism, and the jacking mechanism is capable of driving the lamination mechanism to move in an up-and-down direction.

9. The laminating apparatus according to claim 1, wherein the clamping assembly comprises first and second rotatable conveyor rollers having parallel axes of rotation, the membrane is capable of passing between the first and second conveyor rollers, and the distance between the first and second conveyor rollers is adjustable to clamp or release the membrane.

10. The laminating apparatus of claim 9, wherein the deck includes a bracket, the clamping assembly further includes a clamp actuator and a mounting plate, the mounting plate is disposed at a drive end of the clamp actuator, the first feed roller is rotatably mounted to the bracket, the second feed roller is rotatably mounted to the mounting plate, and the clamp actuator is capable of driving the mounting plate to move to adjust a distance between the first feed roller and the second feed roller.

11. The lamination apparatus according to claim 1, wherein the cutting position of the cutting mechanism is located at an end of the diaphragm adjacent to the output end of the deck.