CN215299325U

CN215299325U - Lamination mechanism

Info

Publication number: CN215299325U
Application number: CN202121128993.2U
Authority: CN
Inventors: 付鑫; 曾黎亮; 李攀攀; 阳如坤
Original assignee: Shenzhen Geesun Intelligent Technology Co Ltd
Current assignee: Shenzhen Geesun Intelligent Technology Co Ltd
Priority date: 2021-05-25
Filing date: 2021-05-25
Publication date: 2021-12-24
Anticipated expiration: 2031-05-25
Also published as: KR20220002838U; JP3238192U

Abstract

The utility model provides a lamination mechanism, relating to the technical field of lithium battery manufacture, comprising a driving compression roller set, a sealing lamination table and a first negative pressure generator, wherein the first negative pressure generator is arranged below the sealing lamination table and is communicated with the bottom of a lamination cavity, used for pumping out air in the lamination chamber, a second negative pressure generator and a third negative pressure generator are arranged at two sides of the sealing lamination table, so that the air density in the lamination cavity is reduced, the air resistance in the lamination cavity is reduced, the free fall and the stacking of the composite pole piece material belt are facilitated, in addition, because the lamination openings are open at the top of the lamination chamber, a small portion of the make-up air is delivered into the lamination chamber through the lamination openings, a generally downward air flow is established within the lamination chamber, thereby facilitating rapid drop-off and rapid stacking of the composite pole piece strips.

Description

Lamination mechanism

Technical Field

The utility model relates to a lithium cell makes technical field, particularly, relates to a lamination mechanism.

Background

The current development trend of lithium ion battery cell lamination equipment gradually tends to integration, intellectualization and high speed. The realization efficiency of the lamination scheme of the existing equipment is only limited to about 480 PPM. The composite sheet can be folded into aligned cells in different modes after being formed, and considering that controlled factors and uncontrolled factors exist in the high-speed stacking process of the cells, the current stacking mode mainly comprises driving active swinging and driving free stacking.

The driving active swing stacking is realized by the principle that the driving roller swings left and right, the sheet is driven to be discharged in the swing process, and the composite sheet is aligned in place by using the inertia force. The problems with this approach are: the driving source is easy to vibrate in the high-speed swinging process, the influence factors of the inertia force are more, meanwhile, the occupied space of the deflection range is larger, the overall layout controllability is small, and the cleaning is troublesome if the material blocking phenomenon occurs. Further, the mode that the drive freely falls to fold has appeared, directly transfers compound pole piece material area through the drive roller promptly, and the unloading area freely piles up at the lamination bench under the effect of gravity, however, the influence that receives air resistance is great for this kind of mode of freely falling body, often can influence and pile up quality and stacking speed.

SUMMERY OF THE UTILITY MODEL

An object of the utility model is to provide a lamination mechanism, it can reduce the air resistance in the free fall, guarantees to pile up the quality, improves and piles up speed.

The embodiment of the utility model is realized like this:

in a first aspect, the utility model provides a lamination mechanism, including drive compression roller set, sealed platform and the first negative pressure generator of folding, the drive compression roller set sets up sealed top of folding the platform, be used for to sealed platform transport composite pole piece material area of folding, sealed platform of folding has one and is used for freely piling up the lamination cavity in composite pole piece material area, the lamination opening has been seted up at the top of lamination cavity, the setting of first negative pressure generator is in the sealed below of folding the platform, just first negative pressure generator with the bottom intercommunication of lamination cavity is used for taking out the air in the lamination cavity.

In an optional embodiment, the lamination mechanism further includes a second negative pressure generator and a third negative pressure generator, which are respectively disposed on two sides of the sealing lamination table and are communicated with two sides of the lamination chamber, and are used for pumping air in the lamination chamber from the two sides.

In an optional implementation manner, the lamination mechanism further includes a first flow guide pipe and a second flow guide pipe, one end of the first flow guide pipe is connected to the first negative pressure generator, the other end of the first flow guide pipe is connected to one side of the sealing lamination table and used for sending air into the lamination chamber, one end of the second flow guide pipe is connected to the first negative pressure generator, and the other end of the second flow guide pipe is connected to the other side of the sealing lamination table and used for sending air into the lamination chamber.

In an alternative embodiment, the air outlet directions of the first guide pipe and the second guide pipe are inclined towards the direction far away from the driving compression roller group.

In an optional embodiment, a first guide plate and a second guide plate are further disposed on the side wall of the lamination chamber, the first guide plate is disposed outside the air outlet of the first guide pipe, the second guide plate is disposed outside the air outlet of the second guide pipe, and the first guide plate and the second guide plate are both inclined toward a direction away from the driving compression roller set.

In optional embodiment, first negative pressure generator includes first negative pressure casing, at least one first intake pipe and first negative pressure pump, first negative pressure pump sets up in the first negative pressure casing, the one end of first intake pipe with first negative pressure pump is connected, the other end with the bottom of sealed pile platform is connected, just first intake pipe with the bottom intercommunication of lamination cavity.

In optional implementation mode, sealed platform of folding includes lamination pedestal, limit baffle and sealed cowling, limit baffle sets up the edge of lamination pedestal is used for to free fall compound pole piece material area carries on spacingly, the sealed cowling lid is established limit baffle is last, just the top of sealed cowling has seted up the lamination opening, the sealed cowling limit baffle with the lamination pedestal encloses jointly into the lamination cavity.

In an alternative embodiment, the lamination pedestal is rectangular, and the limit baffle is arranged around the lamination pedestal.

In an alternative embodiment, the drive roller group includes a first drive roller and a second drive roller, the first drive roller and the second drive roller are rotatably disposed above the sealing lamination station at an interval and form a conveying channel opposite to the lamination opening, and the first drive roller and the second drive roller are the same distance from the sealing lamination station.

In an optional embodiment, the driving roller set further includes a driving member, and the driving member is in transmission connection with the first driving pressing roller or the second driving pressing roller and is used for driving the first driving pressing roller or the second driving pressing roller to rotate.

The utility model discloses beneficial effect includes:

the embodiment of the utility model provides a lamination mechanism, set up first negative pressure generator in the below of sealed platform of folding, and the bottom intercommunication of first negative pressure generator and lamination cavity, be used for taking out the air in the lamination cavity, make the air density in the lamination cavity reduce, the air resistance in the lamination cavity has been reduced, be favorable to the free fall in composite pole piece material area and pile up, and, because the lamination opening is seted up at the top of lamination cavity, the lamination cavity is sent into by the lamination opening to the air of small part of replenishment, make and form the decurrent air current of totality in the lamination cavity, thereby help the quick whereabouts in composite pole piece material area and pile up fast. Compared with the prior art, the utility model provides a lamination mechanism can reduce the air resistance in the free fall, guarantees to pile up the quality, improves and piles up speed.

Drawings

In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the drawings that are required to be used in the embodiments will be briefly described below, it should be understood that the following drawings only illustrate some embodiments of the present invention, and therefore should not be considered as limiting the scope, and for those skilled in the art, other related drawings can be obtained according to the drawings without inventive efforts.

Fig. 1 is a schematic structural diagram of a lamination mechanism according to a first embodiment of the present invention;

FIG. 2 is a schematic structural diagram of the first negative pressure generator in FIG. 1;

FIG. 3 is a schematic view of the drive nip roll set and seal stack of FIG. 1;

fig. 4 is a schematic structural diagram of a lamination mechanism according to a second embodiment of the present invention.

Icon:

100-a lamination mechanism; 110-driving the compression roller set; 111-a first drive roller; 113-a second drive roller; 115-a drive member; 130-sealing and stacking table; 131-a lamination chamber; 1311-lamination openings; 133-lamination stage; 135-limit baffle; 137-sealing cover; 140-a first negative pressure generator; 141-a first negative pressure housing; 143-a first inlet line; 145-a first negative pressure pump; 150-a second negative pressure generator; 160-a third negative pressure generator; 170-a first draft tube; 171-a first baffle; 180-a second draft tube; 181-second baffle.

Detailed Description

In order to make the objects, technical solutions and advantages of the embodiments of the present invention clearer, the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings in the embodiments of the present invention, and it is obvious that the described embodiments are some, but not all, embodiments of the present invention. The components of embodiments of the present invention, as generally described and illustrated in the figures herein, may be arranged and designed in a wide variety of different configurations.

Thus, the following detailed description of the embodiments of the present invention, presented in the accompanying drawings, is not intended to limit the scope of the invention, as claimed, but is merely representative of selected embodiments of the invention. Based on the embodiments in the present invention, all other embodiments obtained by a person skilled in the art without creative efforts belong to the protection scope of the present invention.

It should be noted that: like reference numbers and letters refer to like items in the following figures, and thus, once an item is defined in one figure, it need not be further defined and explained in subsequent figures.

In the description of the present invention, it should be noted that the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer", and the like indicate the position or positional relationship based on the position or positional relationship shown in the drawings, or the position or positional relationship which is usually placed when the product of the present invention is used, and are only for convenience of description and simplification of the description, but do not indicate or imply that the device or element referred to must have a specific position, be constructed and operated in a specific orientation, and thus, should not be construed as limiting the present invention. Furthermore, the terms "first," "second," "third," and the like are used solely to distinguish one from another and are not to be construed as indicating or implying relative importance.

Furthermore, the terms "horizontal", "vertical" and the like do not imply that the components are required to be absolutely horizontal or pendant, but rather may be slightly inclined. For example, "horizontal" merely means that the direction is more horizontal than "vertical" and does not mean that the structure must be perfectly horizontal, but may be slightly inclined.

In the description of the present invention, it should also be noted that, unless otherwise explicitly specified or limited, the terms "disposed," "mounted," "connected," and "connected" are to be construed broadly, e.g., as meaning either a fixed connection, a removable connection, or an integral connection; can be mechanically or electrically connected; they may be connected directly or indirectly through intervening media, or they may be interconnected between two elements. The specific meaning of the above terms in the present invention can be understood in specific cases to those skilled in the art.

As disclosed in the background art, in the free fall and stack driving manner in the prior art, since the lamination table is of an open structure, the composite pole piece material strap is subjected to air resistance in the free fall process, which often affects the stacking quality and the stacking speed. In order to solve the problem, the embodiment of the utility model provides a novel lamination mechanism can effectively reduce air resistance, guarantees to pile up the quality and improves and pile up speed.

First embodiment

Referring to fig. 1, the embodiment provides a lamination mechanism 100 for stacking a composite pole piece tape, where the composite pole piece tape includes a pole piece and a diaphragm, and the lamination mechanism 100 can reduce air resistance in a free fall body by reducing the air resistance, so as to ensure stacking quality and improve stacking speed.

The lamination mechanism 100 provided by this embodiment includes a driving roller set 110, a sealing lamination table 130 and a first negative pressure generator 140, wherein the driving roller set 110 is disposed above the sealing lamination table 130 and is used for conveying the composite pole piece tapes to the sealing lamination table 130, the sealing lamination table 130 has a lamination chamber 131 for freely stacking the composite pole piece tapes, a lamination opening 1311 is formed in the top of the lamination chamber 131, the first negative pressure generator 140 is disposed below the sealing lamination table 130, and the first negative pressure generator 140 is communicated with the bottom of the lamination chamber 131 and is used for pumping out air in the lamination chamber 131.

In this embodiment, the driving roller set 110 is arranged on a mounting plate which is located on the upper side of the sealing stack 130, so that the driving roller set 110 can be arranged opposite the sealing stack 130, and the composite pole piece webs are conveyed by the driving roller set 110 to the lamination opening 1311 and fed into the lamination chamber 131 through the lamination opening 1311, and free stacking is achieved under the action of gravity. And is communicated with the lamination chamber 131 through the first negative pressure generator 140, so that the air density in the lamination chamber 131 is reduced, the air resistance in the lamination chamber 131 is reduced, and the free falling and stacking of the composite pole piece material belt are facilitated, and because the lamination opening 1311 is arranged at the top of the lamination chamber 131, a small part of supplementary air is sent into the lamination chamber 131 through the lamination opening 1311, so that the overall downward air flow is formed in the lamination chamber 131, and the rapid falling and rapid stacking of the composite pole piece material belt are facilitated. In addition, the negative pressure space at the lower end of the lamination chamber 131 can also ensure that the laminated composite sheets in place cannot move, and the alignment degree of the subsequent composite sheets is indirectly ensured.

It should be noted that in this embodiment, the size of the lamination opening 1311 is adapted to the size of the composite pole piece material tape, and specifically, the height of the lamination opening 1311 is higher, so that the composite pole piece material tape can vertically drop down into the lamination opening 1311, and complete the stacking operation below. The size of the lamination opening 1311 is adapted to the size of the composite pole piece material tape, so that the gap between the two is small, and a large amount of air is prevented from entering the lamination chamber 131.

Referring to fig. 2, the first negative pressure generator 140 includes a first negative pressure housing 141, a first negative pressure pump 145, and at least one first air inlet pipe 143, the first negative pressure pump 145 is disposed in the first negative pressure housing 141, one end of the first air inlet pipe 143 is connected to the first negative pressure pump 145, the other end is connected to the bottom of the sealing stack 130, and the first air inlet pipe 143 is communicated with the bottom of the lamination chamber 131. Specifically, a vacuum plate is disposed below the sealing lamination table 130, a plurality of adsorption holes are formed in the vacuum plate, and the first air inlet pipe 143 is simultaneously communicated with the plurality of adsorption holes, so that air in the lamination chamber 131 can be extracted from a plurality of positions. Of course, there may be several first air inlet pipes 143 corresponding to several adsorption holes.

In this embodiment, the lamination mechanism 100 further includes a second negative pressure generator 150 and a third negative pressure generator 160, and the second negative pressure generator 150 and the third negative pressure generator 160 are respectively disposed at both sides of the seal lamination table 130 and communicate with both sides of the lamination chamber 131 for drawing air inside the lamination chamber 131 from both sides. By providing the second negative pressure generator 150 and the third negative pressure generator 160, the air in the lamination chamber 131 can be further evacuated, further reducing the air content in the lamination chamber 131.

In the present embodiment, the second negative pressure generator 150 and the third negative pressure generator 160 have the same configuration as the first negative pressure generator 140, and are not illustrated here. Specifically, the second negative pressure generator 150 includes a second negative pressure housing, a second air inlet pipe, and a second negative pressure pump, the second negative pressure pump is disposed in the second negative pressure housing, one end of the second air inlet pipe is connected with the second negative pressure pump, the other end is connected with one side of the sealing lamination table 130, and the second air inlet pipe is communicated with one side of the lamination chamber 131. The third negative pressure generator 160 includes a third negative pressure housing, a third air inlet pipe and a third negative pressure pump, the third negative pressure pump is disposed in the third negative pressure housing, one end of the third air inlet pipe is connected to the third negative pressure pump, the other end of the third air inlet pipe is connected to the other side of the sealing stacking table 130, and the third air inlet pipe is communicated with the other side of the stacking chamber 131.

Referring to fig. 3, the sealing stacking table 130 includes a lamination pedestal 133, a limit baffle 135 and a sealing cover 137, the limit baffle 135 is disposed at an edge of the lamination pedestal 133 for limiting the free-falling composite pole piece material tape, the sealing cover 137 is covered on the limit baffle 135, a lamination opening 1311 is disposed at the top of the sealing cover 137, and the sealing cover 137, the limit baffle 135 and the lamination pedestal 133 together enclose a lamination chamber 131. Specifically, the limit baffle 135 is disposed around the edge of the lamination pedestal 133, so as to limit the composite pole piece material tape, and facilitate the lamination of the initial composite pole piece material tape. The sealing cap 137 may be made of a transparent material such as glass or resin, which facilitates observation of the inside of the container at any time. Wherein, the sealing cover 137 is in sealing fit with the limit baffle 135, thereby avoiding air leakage of the gap.

In this embodiment, the lamination seat 133 has a rectangular shape, and the limit stop 135 is disposed around the lamination seat 133. Of course, in other preferred embodiments of the present invention, the lamination base 133 may be circular, and the limit baffle 135 is cylindrical and surrounds the periphery of the lamination base 133. The specific shapes of the lamination seat 133 and the limit stop 135 are not limited herein.

The driving roller group 110 includes a first driving roller 111, a second driving roller 113, and a driving member 115, the first driving roller 111 and the second driving roller 113 are rotatably disposed above the sealing lamination table 130 at intervals, and form a conveying passage opposite to the lamination opening 1311, and the first driving roller 111 and the second driving roller 113 have the same distance from the sealing lamination table 130. The driving member 115 is in transmission connection with the first driving pressure roller 111 or the second driving pressure roller 113, and is used for driving the first driving pressure roller 111 or the second driving pressure roller 113 to rotate. Specifically, the first driving roller 111 and the second driving roller 113 are disposed in parallel with the sealing cap 137, so that the composite pole piece material strip can vertically enter into the lamination opening 1311, and stacking is facilitated. Preferably, the driving member 115 is in transmission connection with the first driving press roller 111 and drives the first driving press roller 111 to rotate, so as to control the falling speed of the composite pole piece material strip.

It should be noted that in this embodiment, the driving member 115 may be a motor, which drives the first driving roller 111 to rotate, so that the first driving roller 111 rotates as a driving roller. In other preferred embodiments of the present invention, the first driving roller 111 and the second driving roller 113 can be used as driven rollers, and the composite pole piece material belt can be transported by being driven by other driving rollers.

The lamination mechanism 100 provided in this embodiment has the following dynamic relationship and lamination principle:

firstly, the composite pole piece material belt is reversely converted into a multi-swing-rod mechanism, and the assumption is that: 1. the composite pole piece material belts do not have local bending deformation in the falling and stacking process, and 2, the weight of the connected composite pole piece material belts is not different; 3. the joint of the composite pole piece material belts is constrained by a two-force rod; 4. the center of the hinge point can not shift after being stacked; 5. the tension between the strips of diaphragm material is ignored.

The height of the driving mechanism and the height of the stacking mechanism are H, the width of the composite sheet is W, and the material belt speed is v; driving force F0; in the figure, the four sections of composite pole piece material belts from bottom to top are set as a rod 1, a rod 2, a rod 3 and a rod 4 respectively, and acting forces applied to the rods 1 to 4 are set to be F1 to F4 along the rod direction.

And (3) analyzing the integral stress: the link mechanism is subjected to the weight Mg; a downward driving force F0, and an air resistance F received during the movement of the stack. The air resistance F has the following relationship:

wherein C is the air resistance coefficient; ρ is the air density; s is the windward area; v is the relative air movement velocity; wherein the stacking table descends according to a certain rule in the stacking process. The requirement for realizing free stacking of the drive is met:

Mg+F₀≥F；

the air resistance that whole mechanism received increases when speed promotes, and the structure that reduces air resistance in this embodiment is proposed under the unchangeable condition of pole piece weight, guarantees the realization of high-speed lamination.

In summary, in the lamination mechanism 100 provided by the present embodiment, the first negative pressure generator 140 is disposed below the sealing lamination table 130, and the first negative pressure generator 140 is communicated with the bottom of the lamination chamber 131 for pumping out the air in the lamination chamber 131, and the second negative pressure generator 150 and the third negative pressure generator 160 are disposed on both sides of the sealing lamination table 130, so that the air density in the lamination chamber 131 is reduced, the air resistance in the lamination chamber 131 is reduced, and the free fall and stacking of the composite pole piece tapes are facilitated, and because the lamination opening 1311 is disposed at the top of the lamination chamber 131, a small portion of the supplementary air is sent into the lamination chamber 131 through the lamination opening 1311, so that a generally downward air flow is formed in the lamination chamber 131, thereby facilitating the rapid fall and rapid stacking of the composite pole piece tapes. Compared with the prior art, the utility model provides a lamination mechanism 100 can reduce the air resistance in the free fall, guarantees to pile up the quality, improves and piles up speed.

Second embodiment

Referring to fig. 4, the lamination mechanism 100 provided in this embodiment has the same basic structure and principle and the same technical effect as those of the first embodiment, and for the sake of brief description, the corresponding contents in the first embodiment can be referred to where this embodiment is not mentioned in part.

In the present embodiment, the lamination mechanism 100 includes a driving roller set 110, a sealing lamination table 130 and a first negative pressure generator 140, the driving roller set 110 is disposed above the sealing lamination table 130 for conveying the composite pole piece tapes to the sealing lamination table 130, the sealing lamination table 130 has a lamination chamber 131 for freely stacking the composite pole piece tapes, a lamination opening 1311 is opened at the top of the lamination chamber 131, the first negative pressure generator 140 is disposed below the sealing lamination table 130, and the first negative pressure generator 140 is communicated with the bottom of the lamination chamber 131 for pumping out air in the lamination chamber 131.

In this embodiment, the lamination mechanism 100 further includes a first flow guide tube 170 and a second flow guide tube 180, wherein one end of the first flow guide tube 170 is connected to the first negative pressure generator 140, the other end of the first flow guide tube is connected to one side of the sealing lamination table 130 for feeding air into the lamination chamber 131, one end of the second flow guide tube 180 is connected to the first negative pressure generator 140, and the other end of the second flow guide tube is connected to the other side of the sealing lamination table 130 for feeding air into the lamination chamber 131. Specifically, the first negative pressure generator 140 is used to draw out air from the lamination chamber 131, and the first flow tube 170 and the second flow tube 180 re-feed the air into the lamination chamber 131, thereby creating turbulence in the lamination chamber 131 and converting the air resistance into an auxiliary force during the falling of the lamination.

In this embodiment, the air outlet directions of the first duct 170 and the second duct 180 are inclined toward a direction away from the driving roller group 110. Specifically, the air outlet directions of the first flow tube 170 and the second flow tube 180 are both inclined downward, so that the air flowing out of the first flow tube 170 and the second flow tube 180 can be inclined downward and form an integral downward air flow in the lamination chamber 131.

In this embodiment, the sidewall of the lamination chamber 131 is further provided with a first baffle 171 and a second baffle 181, the first baffle 171 is disposed outside the air outlet of the first flow duct 170, the second baffle 181 is disposed outside the air outlet of the second flow duct 180, and both the first baffle 171 and the second baffle 181 are inclined toward a direction away from the driven platen roller set 110. By providing the first and

second baffles

171, 181, the direction of the airflow can be more positive, further ensuring that an overall downward airflow is created within the lamination chamber 131.

In summary, the lamination mechanism 100 provided in this embodiment is provided with the first guide pipe 170 and the second guide pipe 180, and guides the flow through the first guide plate 171 and the second guide plate 181, so that a vertical downward airflow is formed in the lamination chamber 131, and the air resistance is converted into an auxiliary force in the falling process of the lamination, thereby further improving the lamination speed, reducing the dependence on the driving compression roller set 110, reducing the overall vibration risk, and ensuring the stability of the lamination table system.

The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention, and various modifications and changes may be made by those skilled in the art. Any modification, equivalent replacement, or improvement made within the spirit and principle of the present invention should be included in the protection scope of the present invention.

Claims

1. The utility model provides a lamination mechanism, its characterized in that, includes drive compression roller set, sealed pile platform and first negative pressure generator, drive compression roller set sets up sealed pile platform's top, be used for to sealed pile platform carries compound pole piece material area, sealed pile platform has one and is used for freely piling up the lamination cavity in compound pole piece material area, the lamination opening has been seted up at the top of lamination cavity, first negative pressure generator sets up the below of sealed pile platform, just first negative pressure generator with the bottom intercommunication of lamination cavity is used for taking out the air of lamination cavity bottom.

2. The lamination mechanism according to claim 1, further comprising a second negative pressure generator and a third negative pressure generator, the second negative pressure generator and the third negative pressure generator being in communication with both sides of the lamination chamber, respectively, for drawing air from within the lamination chamber from both sides.

3. The lamination mechanism according to claim 1, further comprising a first flow conduit connected at one end to the first negative pressure generator and at another end to one side of the seal stack for feeding air into the lamination chamber through the side, and a second flow conduit connected at one end to the first negative pressure generator and at another end to the other side of the seal stack for feeding air into the lamination chamber through the side.

4. The lamination mechanism according to claim 3, wherein the outlet direction of each of the first and second ducts is inclined away from the drive roller set.

5. The lamination mechanism according to claim 3, wherein a first baffle and a second baffle are further disposed on the sidewall of the lamination chamber, the first baffle is disposed outside the outlet of the first flow guide tube, the second baffle is disposed outside the outlet of the second flow guide tube, and the first baffle and the second baffle are both inclined away from the driving pressure roller set.

6. The lamination mechanism according to any one of claims 1 to 5, wherein the first negative pressure generator comprises a first negative pressure housing, a first negative pressure pump and at least one first air inlet pipe, the first negative pressure pump is disposed in the first negative pressure housing, one end of the first air inlet pipe is connected to the first negative pressure pump, the other end of the first air inlet pipe is connected to the bottom of the sealing lamination table, and the first air inlet pipe is communicated with the bottom of the lamination chamber.

7. The lamination mechanism according to any one of claims 1 to 5, wherein said sealing lamination station comprises a lamination pedestal, a limit baffle and a sealing cover, said limit baffle is disposed at the edge of said lamination pedestal for limiting the free falling of said composite pole piece material strip, said sealing cover is disposed on said limit baffle, and said lamination opening is opened at the top of said sealing cover, and said sealing cover, said limit baffle and said lamination pedestal together enclose said lamination chamber.

8. The lamination mechanism according to claim 7, wherein said lamination shoe is rectangular and said limit stop is positioned around said lamination shoe.

9. The lamination mechanism according to any one of claims 1 to 5, wherein the drive roller set comprises a first drive roller and a second drive roller, the first drive roller and the second drive roller being rotatably spaced above the seal lamination station and forming a feed channel opposite the lamination opening, and the first drive roller and the second drive roller being spaced from the seal lamination station by the same distance.

10. The lamination mechanism according to claim 9, wherein the driving roller set further comprises a driving member, and the driving member is in transmission connection with the first driving pressing roller or the second driving pressing roller and is used for driving the first driving pressing roller or the second driving pressing roller to rotate.