CN218333914U

CN218333914U - Lamination device

Info

Publication number: CN218333914U
Application number: CN202220684237.6U
Authority: CN
Inventors: 请求不公布姓名
Original assignee: Wuxi Lead Intelligent Equipment Co Ltd
Current assignee: Wuxi Lead Intelligent Equipment Co Ltd
Priority date: 2022-03-24
Filing date: 2022-03-24
Publication date: 2023-01-17
Anticipated expiration: 2032-03-24

Abstract

The utility model relates to a lamination equipment, include lamination mechanism, deck mechanism, press mold mechanism and cut the 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 carrying out the lamination of next electric core, the lamination platform moves along predetermineeing the direction for the deck tape unit structure earlier, and the loading end can be drawn across to the free section of diaphragm to by the edge of press mold mechanism holding the loading end with its pressure. 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 utility model relates to a lithium battery equipment technical field, 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 being cut will form a free section of a longer length, which is in a freely 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.

SUMMERY OF THE UTILITY MODEL

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 film pressing mechanism is arranged on one side of the lamination table in the preset direction and can press the diaphragm on the edge of the bearing surface;

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 platform and the tape transport mechanism can relatively reciprocate along the preset direction in the lamination process, the clamping assembly releases the diaphragms, and the sheet taking mechanism sequentially places pole pieces on the diaphragms so as to enable the diaphragms output by the tape transport mechanism to be laid in a Z shape 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 and a position avoiding state, wherein the pressing state can press and hold the pole piece and the diaphragm on the bearing surface, and the position avoiding state can form a position avoiding state on 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 includes a filling assembly, the filling assembly includes a filling plate and a first driving member, the filling plate and the clearance openings correspond to each other one by one, and the first driving member can drive the filling plate to enter the corresponding clearance opening and to be in the same plane with the bearing surface, and can drive the filling plate to expose the clearance opening.

In one embodiment, the lamination table is provided with a first adsorption hole, and the first adsorption hole can form negative pressure on the bearing surface to adsorb the membrane.

In one embodiment, the clamping assembly includes a first conveying roller, a second conveying roller and a second driving member which are rotatable, the rotation axes of the first conveying roller and the second conveying roller are parallel, a diaphragm can pass through the first conveying roller and the second conveying roller, and the second driving member can drive the first conveying roller and the second conveying roller to move relatively to clamp or release the diaphragm.

In one embodiment, the tape deck further comprises a clamping assembly arranged upstream of the clamping assembly, the clamping assembly comprises a third conveying roller, a pressing plate and a third driving member, the diaphragm can penetrate through the space between the third conveying roller and the pressing plate, and the third driving member can drive the pressing plate and the third conveying roller to move relatively so as to clamp or release the diaphragm.

In one embodiment, the film pressing mechanism comprises a mounting plate, a pressing claw and a fourth driving part, the mounting plate is fixed on one side of the lamination table in the preset direction, the pressing claw is rotatably arranged on the mounting plate, and the fourth driving part can drive the pressing claw to rotate and enable the pressing claw to abut against the bearing surface.

In one embodiment, a flexible cushion layer is arranged on one side of the pressing claw, which is in contact with the diaphragm.

In one embodiment, a guide plate is arranged on one side of the mounting plate away from the lamination table, and the guide plate is provided with a supporting surface which is flush with the bearing surface.

In one embodiment, the mounting plate is provided with a second adsorption hole, and the second adsorption hole can form negative pressure on the surface of the mounting plate to adsorb the diaphragm.

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 tape 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 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, the free section of the diaphragm can cross the bearing surface, and the film pressing mechanism presses the free section of the diaphragm to the edge of the bearing surface, so that one end of the diaphragm is fixed. As the lamination table continues to move, the clamping assembly releases the membrane, which can be pulled out and gradually flattened onto 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 embodiments or the prior art descriptions will be briefly described below, it is obvious that the drawings in the following description are only some embodiments of the present application, and other drawings can be obtained by those skilled in the art 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 portion of the lamination apparatus of FIG. 1 including a lamination mechanism and a lamination mechanism;

FIG. 3 is a schematic view of another state of the partial structure shown in FIG. 2;

FIG. 4 is a top view of a portion of the structure shown in FIG. 2;

FIG. 5 is a left side view of a deck of the laminating apparatus shown in FIG. 1;

FIG. 6 is a schematic view of a clamping assembly in the tape deck of FIG. 4;

fig. 7 is a schematic view of a clamping assembly in the deck of fig. 4;

fig. 8 to 11 are schematic and partially enlarged 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 more 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. The invention may be embodied in many other forms different from those described herein and similar modifications may be made by those skilled in the art without departing from the spirit and scope of the invention and, therefore, the invention is not to be limited to the specific embodiments disclosed below.

In the description of the present invention, it is to be understood that the terms "center", "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, indicate the orientation or positional relationship based on the orientation or positional relationship shown in the drawings, and are only for convenience of description and simplicity of description, and do not indicate or imply that the device or element referred to must have a particular orientation, be constructed and operated in a particular orientation, and therefore, should not be construed as limiting the present 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 explicitly defined otherwise.

In the present invention, unless otherwise explicitly specified or limited, the terms "mounted," "connected," "secured," and the like are to be construed broadly, e.g., as being fixedly connected, detachably connected, or integrated; 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 meaning of the above terms in the present invention can be understood according to specific situations by those of ordinary skill in the art.

In the present application, unless expressly stated or limited otherwise, the first feature may be directly on or directly under the second feature or indirectly via intermediate members. 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 "under," "beneath," and "under" a second feature may be directly under or obliquely under the second 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. The terms "vertical," "horizontal," "upper," "lower," "left," "right," and the like as used herein are for illustrative purposes only and do not denote a unique embodiment.

Referring to fig. 1, a lamination apparatus 10 according to a preferred embodiment of the present invention includes a lamination mechanism 100, a tape transport mechanism 200, a film pressing mechanism 300, a film taking mechanism (not shown), and a cutting mechanism 400.

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

Referring to fig. 2 to 4, the lamination mechanism 100 includes a lamination table 110. 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.

In the embodiment, the lamination table 110 is provided with a first suction hole 112, and the first suction hole 112 can form a negative pressure on the bearing surface to suck the membrane. The first suction holes 112 can be uniformly distributed on the carrying surface. Therefore, when the membrane covers the bearing surface, the bearing surface can adsorb the membrane to fix the membrane, so that the membrane is prevented from generating wrinkles due to position movement in the lamination process.

The tape deck 200 is located above the carrying surface of the lamination stage 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 500, and the unwinding mechanism 500 may be a tension shaft. The rolled separator 11 may be wound around the unwinding mechanism 500 in advance, and may be continuously unwound from the unwinding mechanism 500 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 can pull 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 sheets and the negative electrode sheets on the diaphragm 11 of the lamination table 110, and the tape transport mechanism 200 acts once and pulls the diaphragm 11 to cover the electrode sheets when placing one electrode sheet, so that the electrode sheets are arranged between the adjacent diaphragm 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.

The lamination mechanism 300 is disposed on one side of the lamination stage 110 in the predetermined direction, and the lamination mechanism 300 can press the diaphragm 11 against the edge of the bearing surface. For example, the film pressing mechanism 300 of the present embodiment is disposed on the right side of the lamination stage 110 as shown in fig. 2, and can press the diaphragm 11 against the right edge of the supporting surface.

The cutting mechanism 400 is capable of cutting the separator 11 between the output end of the deck 200 and the lamination station 110. Specifically, the cutting mechanism 400 includes a cutting driving member 410 and a cutting blade 420, and the cutting driving member 410 may be an air cylinder, an electric cylinder or a transmission structure matching the air cylinder and the electric cylinder, and cuts the diaphragm 11 by driving the cutting blade 420 to move. Obviously, the cutting mechanism 400 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 400 can cut off the diaphragm 11 between the output end of the tape transport mechanism 200 and the lamination table 110, and the stacked 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. 8 to 11:

after one battery 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 as shown in fig. 8; the clamping assembly 210 clamps the membrane 11 and the cutting mechanism 400 cuts the membrane 11, and the lamination apparatus 10 is in the state shown in fig. 9. 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 tape transport mechanism 200 moves leftward to drive the free section of the diaphragm 11 to move to the carrying surface of the lamination table 110 after passing through the film pressing mechanism 300, and at this time, the state of the lamination apparatus 10 is as shown in fig. 10; next, the film pressing mechanism 300 presses the free section of the diaphragm 11 against the right edge of the bearing surface, so as to fix one end of the diaphragm 11, and the state of the lamination apparatus 10 is shown in fig. 11; as the tape transport mechanism 200 continues to move leftward, the pressing mechanism 300 keeps pressing the diaphragm 11, the clamping assembly 210 releases the diaphragm 11, and the diaphragm 11 is pulled out and gradually laid on the bearing surface.

It can be seen that the cut separator 11 will be drawn to the lamination station 110 again in preparation for the next cell stack. Moreover, a back-blowing mechanism is not needed to blow air in the process of introducing the diaphragm 11, and the diaphragm 11 can keep high flatness. When stacking the next electric core, the film pressing mechanism 300 releases the pressing of the diaphragm 11, the clamping assembly 210 releases the diaphragm 11, and the diaphragm 11 can continue to perform Z-shaped laying on the carrying surface as the tape deck 200 and the lamination table 100 relatively reciprocate in the preset direction.

Referring to fig. 1 again, in the present embodiment, the cutting position of the cutting mechanism 400 is located at one end of the diaphragm close to the output end of the deck 200. When the diaphragm 11 is not cut, it 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 400 is disposed near the output end of the deck 200 so that the cutting position of the cutting mechanism 400 is as close as possible to the first end of the diaphragm 11. Therefore, the length of the free segment formed after the diaphragm 11 is cut is further shortened. The cutting mechanism 400 may be disposed close to the output end of the tape deck 200, or may be directly disposed at the output end of the tape deck 200.

Referring to fig. 4 again, in the present embodiment, the lamination mechanism 100 further includes a pressing assembly (not shown), and the pressing assembly 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 compressing assembly is in the avoiding state, the pole piece and the diaphragm 11 can be conveniently and normally placed; when the compressing assembly is in a compressing state, the stacked pole pieces and the diaphragm 11 can be prevented from loosening or deviating.

Specifically, the pressing assembly generally includes a pressing blade 121 disposed at an edge of the lamination table 110 and a pressing driving member (not shown), and the pressing driving member can drive the pressing blade 121 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 between the pressing state and the avoiding state. For a rectangular lamination table 110, the pressing knives 121 are preferably distributed at four top corners of the lamination table 110.

When the stacked battery cells are transferred to the next process, the battery cells on the carrying surface are generally grabbed by the carrying clamping jaws (not shown), and then the battery cells are carried to the next station by the carrying clamping jaws for other processes. However, the handling clamping jaw is easy to clamp and scatter the manufactured battery cell in the process of grabbing the battery cell, and even damage the battery cell.

To avoid this problem, please refer to fig. 4 again, in the present embodiment, a plurality of position-avoiding openings 111 for the carrying clamping jaws to extend into are formed on the carrying surface.

The avoiding opening 111 is generally in a strip shape, and at least one end of the avoiding opening 111 extends to the side surface of the lamination table 110, so that a carrying clamping jaw can conveniently extend into the avoiding opening. So, the transport clamping jaw can stretch into the downside to electric core by keeping away position mouth 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 mark 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) including a filling plate 131 and a first driving member (not shown), the filling plates 131 correspond to the position-avoiding openings 111 one by one, and the first driving member can drive the filling plates 131 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 131 to expose the position-avoiding openings 111.

Each filling plate 131 is in a strip shape and is matched with the shape of the avoiding opening 111. The plurality of completion plates 131 may be driven by one first driving member or may be driven by a plurality of first driving members individually. In the process of stacking the battery cells, the first driving member may drive the multiple filling plates 131 to move, and the multiple filling plates 131 enter the corresponding avoiding openings 111. Since the surface of the filling plate 131 is on the same plane as the carrying surface, the filling plate 131 can fill the avoiding opening 111, so as to form a complete plane by matching with the carrying 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 first driving member drives the filling plate 131 to expose the avoiding opening 111. 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. 5 and fig. 6, in the present embodiment, the clamping assembly 210 includes a first conveyor roller 211, a second conveyor roller 212 and a second driving element 213 which are rotatable, 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 second driving element 213 can drive the first conveyor roller 211 and the second conveyor roller 212 to move relatively 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 pinch the diaphragm 11, and are far 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. In addition, when the diaphragm 11 is output from the output end of the deck 200, the first conveying roller 211 and the second conveying roller 212 can rotate together with the diaphragm 11, so that the friction force on the diaphragm 11 can be reduced to avoid damage to the diaphragm 11 output from the output end.

Further, in this embodiment, the tape deck 200 includes a bracket 220, the clamping assembly 210 further includes a mounting plate 214, the mounting plate 214 is disposed at the driving end of the second driving member 213, the first transport roller 211 is rotatably mounted on the bracket 220, the second transport roller 212 is rotatably mounted on the mounting plate 214, and the second driving member 213 can drive the mounting plate 214 to move, so as to adjust the distance between the first transport roller 211 and the second transport roller 212. The second driving member 213 may be an air cylinder, and may be fixed to the bracket 220 by an air cylinder connection plate (not shown). Therefore, the second driving member 213 can drive the second conveying roller 212 to move through the mounting plate 214, so as to adjust the distance between the first conveying roller 211 and the second conveying roller 212, thereby automatically adjusting the state of the clamping assembly 210.

In order to make the second conveying roller 212 more stable in the moving process, the two ends of the bracket 220 in the longitudinal direction of the second conveying roller 212 are respectively provided with a mounting plate 214, and the two mounting plates 214 are respectively connected with the driving end of a second driving element 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 an input end of the deck 200 and rotatably mounted to the frame 220. The separator 11 entering the deck 200 passes around the rollers 230 and then through the gripper assembly 210.

As described above, since the first conveying roller 211 and the second conveying roller 212 can rotate along with the diaphragm 11, when the clamping assembly 210 clamps the diaphragm 11, the tension of the isolation 11 may not be completely blocked, and the diaphragm 11 may still be unwound when receiving the tension, thereby resulting in a long free section formed after cutting.

To solve this problem, in the present embodiment in particular, the deck 200 further includes a clamping assembly 240, and the clamping assembly 240 is disposed upstream of the clamping assembly 210. Specifically, the clamping assembly 240 is disposed between the clamping assembly 210 and the roller 230, and the diaphragm 11 entering the deck 200 passes through the roller 230, the clamping assembly 240 and the clamping assembly 210 in sequence.

Referring to fig. 7, the clamping assembly 240 includes a third feeding roller 241, a pressing plate 242 and a third driving member 243, the diaphragm 11 can pass between the third feeding roller 241 and the pressing plate 242, and the third driving member 243 can drive the pressing plate 242 and the third feeding roller 241 to move relatively to clamp or release the diaphragm 11.

The third driving member 243 may be an air cylinder, and may be fixed to the bracket 220 by an air cylinder connecting plate (not shown), and a plurality of, for example, two, third driving members 243 may be provided. Since the pressing plate 242 does not rotate, when the pressing plate 242 presses the diaphragm 11 against the third conveying roller 241, the clamping effect of the clamping assembly 240 on the diaphragm 11 is better than that of the clamping assembly 210, so that the tension can be effectively blocked to prevent the diaphragm 11 from being continuously unreeled.

Referring to fig. 2 to 4 again, in the present embodiment, the film pressing mechanism 300 includes a mounting plate 310, a pressing claw 320 and a fourth driving member 330, the mounting plate 310 is fixed on one side of the lamination table 110 in the predetermined direction, the pressing claw 320 is rotatably disposed on the mounting plate 310, and the fourth driving member 330 can drive the pressing claw 320 to rotate and make the pressing claw 320 abut against the carrying surface.

The mounting plate 310 may be fixed to one side of the lamination stage 110 by welding, screwing, or the like. The extending direction of the rotating shaft of the pressing claw 320 is perpendicular to the predetermined direction and parallel to the bearing surface, i.e. the direction perpendicular to the plane of the drawing shown in fig. 2. Specifically, in the present embodiment, the mounting plate 310 is fixed to the right side of the lamination stage 110. Under the driving of the fourth driving part 330, the pressing claw 320 can turn clockwise, so as to avoid the bearing surface; when one end of the diaphragm 11 needs to be fixed on the bearing surface, the fourth driving component 330 drives the pressing claw 320 to rotate counterclockwise until the pressing claw 320 abuts against the bearing surface. At this time, the pressing claw 320 can press the membrane 11 on the edge of the bearing surface.

It should be noted that in other embodiments, the film pressing mechanism 300 may have other structures as long as it can press and hold one end of the diaphragm 11 on the bearing surface.

Specifically, in the present embodiment, a flexible cushion 321 is provided on the side of the pressing claw 320 that contacts the diaphragm 11. The flexible cushion 321 may be formed of a flexible or elastic material such as rubber, silicone, sponge, etc., and can prevent the pressing claw 320 from damaging the diaphragm 11 when pressing and holding the diaphragm 11.

Further, in the present embodiment, a side of the mounting plate 310 away from the lamination stage 110 is provided with a guide plate 340, and the guide plate 340 has a supporting surface 341 flush with the bearing surface.

Specifically, in the process that the free section of the diaphragm 11 moves towards the bearing surface, the free section of the diaphragm 11 firstly passes through the supporting surface 341 of the guide plate 340, and the supporting surface 341 can support and flatten the free section of the diaphragm 11, so that when the free section moves to the bearing surface and is adsorbed and pressed, the flatness of the diaphragm 11 is higher.

Moreover, the guide plate 340 is generally provided in plural, and the plural guide plates 340 are spaced along the edge of the lamination table 110, and the space between two adjacent guide plates 340 can be used as a passage for the pressing claw 320 to turn.

Further, in the present embodiment, the mounting plate 310 has a second suction hole 311, and the second suction hole 311 can form a negative pressure on the surface of the mounting plate 310 to suck the diaphragm 11.

When the free section of the diaphragm 11 moves towards the bearing surface, the guide plate contacts the diaphragm 11 first to guide the diaphragm 11 and is adsorbed when moving onto the mounting plate 310; at this time, the mounting plate 310 may fix the diaphragm 11, thereby preventing the state of the diaphragm 11 from being changed. As the tape deck 200 continues to move, the free section of the diaphragm 11 continues to be dragged until being sucked by the second suction hole 111 on the lamination table 110, and then is pressed against the bearing surface by the pressing claw 320.

Referring to fig. 1 again, in the present embodiment, the lamination device 10 further includes a jacking mechanism 600, the lamination mechanism 100 is disposed at a driving end of the jacking mechanism 600, and the jacking mechanism 600 can drive the lamination mechanism 100 to move in an up-and-down direction.

The jacking mechanism 600 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 apparatus 10, after one cell is stacked, the clamping assembly 210 clamps the membrane 11 to maintain tension, and the cutting mechanism 400 cuts the membrane 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 laminating the next electrical core, the laminating table 110 moves in a predetermined direction relative to the tape transport mechanism 200, so that the free section of the separator 11 can pass through the carrying surface, and the film pressing mechanism 300 presses the edge of the carrying surface, thereby fixing one end of the separator 11. 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 core 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 represent some embodiments of the present invention, and the description thereof is specific and detailed, but not to be construed as limiting the scope of the present invention. It should be noted that, for those skilled in the art, without departing from the spirit of the present invention, several variations and modifications can be made, which are within the scope of the present invention. Therefore, the protection scope of the present invention should be subject to the appended claims.

Claims

1. A lamination apparatus, comprising:

the lamination table and the tape transport mechanism can relatively reciprocate along the 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.

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 laminating device according to claim 1, wherein the carrying surface is provided with a plurality of clearance openings into which the carrying jaw extends.

4. The laminating device according to claim 3, wherein the laminating mechanism further comprises a filling assembly, the filling assembly comprises a filling plate and a first driving member, the filling plate and the clearance openings correspond to each other one by one, and the first driving member can drive the filling plate to enter the corresponding clearance opening and be in the same plane with the bearing surface, and can drive the filling plate to expose the clearance opening.

5. The lamination apparatus according to claim 1, wherein the lamination station defines first suction holes capable of creating a negative pressure on the bearing surface to suck the membrane.

6. The laminating apparatus according to claim 1, wherein the clamping assembly includes a first feed roller, a second feed roller and a second driving member which are rotatable, the rotation axes of the first feed roller and the second feed roller are parallel, a membrane can pass between the first feed roller and the second feed roller, and the second driving member can drive the first feed roller and the second feed roller to move relatively to clamp or release the membrane.

7. The laminating apparatus according to claim 6, wherein the deck further comprises a clamping assembly disposed upstream of the clamping assembly, the clamping assembly including a third feed roller, a pressure plate, and a third driving member, wherein the membrane is capable of passing between the third feed roller and the pressure plate, and wherein the third driving member is capable of driving the pressure plate and the third feed roller to move relative to each other to clamp or release the membrane.

8. The laminating apparatus according to claim 1, wherein the film pressing mechanism includes a mounting plate, a pressing claw, and a fourth driving member, the mounting plate is fixed to one side of the laminating table in the preset direction, the pressing claw is rotatably disposed on the mounting plate, and the fourth driving member can drive the pressing claw to rotate and make the pressing claw abut against the bearing surface.

9. The lamination device according to claim 8, wherein the side of the pressing claw in contact with the membrane is provided with a flexible cushion.

10. The lamination device according to claim 8, wherein a side of the mounting plate remote from the lamination station is provided with a guide plate having a support surface flush with the bearing surface.

11. The lamination device according to claim 8, wherein the mounting plate is provided with a second suction hole capable of forming a negative pressure on the surface of the mounting plate to suck the diaphragm.

12. 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.