CN116344895A

CN116344895A - Lamination device and electric core production facility

Info

Publication number: CN116344895A
Application number: CN202111578618.2A
Authority: CN
Inventors: 温燕修; 赵盛宇
Original assignee: Hymson Laser Intelligent Equipment Jiangsu Co ltd
Current assignee: Hymson Laser Intelligent Equipment Jiangsu Co ltd
Priority date: 2021-12-22
Filing date: 2021-12-22
Publication date: 2023-06-27

Abstract

The invention relates to the technical field of batteries, and provides a lamination device and battery cell production equipment. The lamination device includes: the material discharge mechanism is used for conveying the material belt and comprises a material discharge assembly, and at least part of the material discharge assembly is used for adsorbing a diaphragm between adjacent electric core units in the material belt discharged from a material discharge opening; the material platform is used for receiving the material belt discharged through the material discharge opening; the stop part is arranged at one end of the material table, which is away from the material discharge opening, so as to limit the battery cell unit in the material belt. The utility model provides an in lamination device material subassembly that expects in the mechanism of expecting has the adsorption function, can reverse when the material area band-pass spouts the material mouth and pull the diaphragm between adjacent electric core unit to promote the roughness of adjacent electric core unit diaphragm in the stacked structure. Meanwhile, in the lamination device, the stop part is arranged at one end of the material table, which is away from the material outlet, and can limit the end face of one side of the battery cell unit so as to realize the alignment operation of a plurality of battery cell units.

Description

Lamination device and electric core production facility

Technical Field

The application relates to the technical field of batteries, in particular to a lamination device and electric core production equipment.

Background

Because of the development trend of lithium batteries, the cell molding process plays an important role. In the manufacturing process of the lithium battery, the preparation of the battery cell structure is a key technology, the battery cell structure is formed by stacking a plurality of battery cell units, and the battery cell units are formed by compounding a diaphragm, a first pole piece and a second pole piece which are positioned on two sides of the diaphragm.

In the preparation process of the battery cell unit, the material belt is spitted onto a material table through a spitting mechanism to be stacked to form the battery cell structure. Specifically, during the material discharge process, the cell units and the diaphragms are alternately sent to the material table, so that the stacking of the cell units is realized. However, in the stacking process, the cell spacers are not easy to flatten, and the end faces of the plurality of cell units are not easy to align, so that the uniformity of the cell structure formed by stacking is poor.

Therefore, it is desirable to provide a lamination device that can improve the uniformity of the cell structure.

Disclosure of Invention

The application provides a lamination device and electric core production facility to promote the regularity of the electric core structure that the preparation formed.

In order to achieve the above purpose, the present application provides the following technical solutions:

according to a first aspect of the present application there is provided a lamination device comprising:

the material discharge mechanism is used for conveying the material belt and comprises a material discharge assembly, and at least part of the material discharge assembly is adsorbed to a diaphragm between adjacent electric core units in the material belt discharged from the material discharge opening;

The material platform is used for receiving the material belt discharged through the material discharge opening;

the stop part is arranged at one end of the material table, which is away from the material outlet, so as to limit the battery cell unit in the material belt.

The utility model provides an in lamination device material subassembly that expects in the mechanism of expecting has the adsorption function, can reverse when the material area band-pass spouts the material mouth and pull the diaphragm between adjacent electric core unit to promote the roughness of adjacent electric core unit diaphragm in the stacked structure. Meanwhile, in the lamination device, the stop part is arranged at one end of the material table, which is away from the material outlet, and can limit the end face of one side of the battery cell unit so as to realize the alignment operation of a plurality of battery cell units.

It should be noted that, the lamination device that this application provided is through expecting subassembly and backstop cooperation use, can promote the regularity that the electric core structure stacked.

In an embodiment of the application, the device further comprises a guiding mechanism, wherein the guiding mechanism is provided with a guiding channel for accommodating the position of the diaphragm after the material discharge assembly is adsorbed, the guiding channel is provided with an inlet, and the inlet is positioned on the discharging side of the material discharge opening.

In one embodiment of the present application, an auxiliary alignment mechanism is further included for moving the cell unit in a direction approaching the stopper.

In one embodiment of the present application, the battery cell manufacturing device further comprises a limiting mechanism, wherein the limiting mechanism is located above the material table, and the minimum distance between the lower surface of the limiting mechanism and the table top of the material table is matched with the sum of the thickness of the battery cell unit and the thickness of the diaphragm.

In one embodiment of the present application, the material discharge mechanism is movably mounted to the base along a first direction, the first direction is parallel to the width direction of the material belt, and the lamination device further includes a detection mechanism, the detection mechanism is fixed relative to the base, and the detection mechanism is used for detecting the offset of the material belt along the first direction.

In one embodiment of the present application, the spitting mechanism further comprises a support base, wherein:

the supporting seat is movably arranged on the base along the first direction;

the material discharging assembly is arranged on one side, deviating from the base, of the supporting seat, the material discharging assembly is provided with a material discharging opening, and the material discharging direction of the material discharging opening is adjustable.

According to a second aspect of the present application, there is provided a cell production apparatus, including any one of the lamination devices provided by the above technical scheme.

In one embodiment of the present application, the device further comprises two pole piece correction transmission devices disposed at the front end of the lamination device, wherein the two pole piece correction transmission devices are symmetrically disposed and are respectively used for transmitting pole pieces with two polarities required in the material belt, at least one of the pole piece correction transmission devices comprises a transmission mechanism and a correction mechanism, and the transmission mechanism is provided with a first transmission surface; the correction mechanism has a second transmission surface for transmitting the pole piece transferred from the first transmission surface.

In one embodiment of the present application, the leading end of the second conveying surface is higher than the trailing end of the first conveying surface along the traveling direction of the pole piece.

In one embodiment of the present application, the pole piece conveying and correcting device further includes a pressing mechanism, the pressing mechanism has a pressing station and a lifting station, and when the pressing mechanism is in the pressing station, a pressing conveying space of the pole piece is formed between the pressing mechanism and the first conveying surface; when the pressing mechanism is in the lifting station, the pole piece moves out of the pressing transmission space.

Drawings

For a better understanding of the present disclosure, reference may be made to the embodiments illustrated in the following drawings. The components in the drawings are not necessarily to scale and related elements may be omitted in order to emphasize and clearly illustrate the technical features of the present disclosure. In addition, the relevant elements or components may have different arrangements as known in the art. Furthermore, in the drawings, like reference numerals designate identical or similar parts throughout the several views. Wherein:

fig. 1 is a schematic structural diagram of a material belt according to an embodiment of the present application;

fig. 2 is a schematic structural diagram of a cell production apparatus according to an embodiment of the present application;

Fig. 3 is a first schematic diagram of a pole piece correction transmission device provided in an embodiment of the present application;

FIG. 4 is a first cross-sectional view taken at A-A of FIG. 3;

FIG. 5 is a second cross-sectional view taken at A-A of FIG. 3;

fig. 6 is a second schematic diagram of a pole piece correction transmission device provided in an embodiment of the present application;

fig. 7 is a third schematic diagram of a pole piece correction transmission device provided in an embodiment of the present application;

FIG. 8 is a cross-sectional view taken at A-A of FIG. 7;

FIG. 9 is a schematic view of one construction of the lamination assembly shown in FIG. 2;

FIG. 10 is a schematic perspective view of the spitting mechanism of FIG. 9;

FIG. 11 is a side view of the spitting mechanism of FIG. 10;

FIG. 12 is a second side view of the spitting mechanism of FIG. 10;

FIG. 13 is a third side view of the spitting mechanism of FIG. 10;

fig. 14 is a second structural schematic view of the lamination device shown in fig. 2;

FIG. 15 is a schematic view of the septum of FIG. 14 after movement;

FIG. 16 is a third structural schematic view of the lamination assembly shown in FIG. 2;

FIG. 17 is a schematic structural view of the auxiliary alignment mechanism according to the embodiment of the present application;

fig. 18, 19 to 20 are explanatory structural views;

FIG. 21 is a schematic view of a second configuration of auxiliary alignment mechanism engagement provided in an embodiment of the present application;

FIG. 22 is a schematic view of a third configuration of auxiliary alignment mechanism engagement provided in an embodiment of the present disclosure;

fig. 23 is a schematic structural view of a limiting mechanism according to an embodiment of the present disclosure;

fig. 24 is a schematic structural diagram of a material stage according to an embodiment of the present application.

The reference numerals are explained as follows:

001-a material belt; 01-cell unit; 011—an intermediate separator; 012-first pole piece; 013-a second pole piece; 02-a separator; 100-lamination device; 110-a material discharge mechanism; 111-a bump structure; 112-a first wheel; 113-a second wheel; 120-material stage; 121-a lifting mechanism; 122-ramp; 130-a stop; 131-auxiliary alignment mechanism; 1311-balancing weight; 1312-adsorption channels; 132-a limiting mechanism; 1321-arcuate segment; 1322-horizontal segment; 1323-rolling elements; 140-base; 141-a slide rail; 150-a detection mechanism; 160-supporting seats; 161-hinge shaft; 162-support structure; 163-locking structure; 170-a first baffle; 180-a second baffle; 190-a third baffle; 200-pole piece correction transmission device; 210-a transmission mechanism; 211-a first transfer roller; 220-a correction mechanism; 221-a second transfer roller; 222-a barrier; 2221—a first stop; 2222-second stop; 230-an air blowing mechanism; 240-a hold-down mechanism; 300-a pair of pasting devices; 310-a first roller body; 320-second roller body.

Detailed Description

The following description of the embodiments of the present invention will be made clearly and completely with reference to the accompanying drawings, in which it is apparent that the embodiments described are only some embodiments of the present invention, but not all embodiments. All other embodiments, which can be made by those skilled in the art based on the embodiments of the invention without making any inventive effort, are intended to be within the scope of the invention.

The embodiment of the application provides a battery cell production device. In order to clearly understand the structure of the cell production equipment provided by the embodiment of the application. Referring now to the tape structure and the cell structure, fig. 1 is a schematic structural diagram of a tape 001 according to an embodiment of the present application. As shown in fig. 1, specifically, the tape 001 includes a plurality of cell units 01 as shown in fig. 1, and adjacent cell units 01 are arranged at intervals along the extending direction of the tape 001 and are connected by using a diaphragm 02. It should be understood that each cell unit 01 includes an intermediate diaphragm 011 and first and

second pole pieces

012 and 013 disposed on both sides of the intermediate diaphragm 011, wherein the first pole piece 012 is opposite in polarity to the second pole piece 013. When the first pole piece 012 is a positive pole piece, the second pole piece 013 is a negative pole piece, whereas when the first pole piece 012 is a negative pole piece, the second pole piece 013 is a positive pole piece. It is noted that, the middle membrane 011 in the cell unit 01 and the membrane 02 between the adjacent cell units 01 are continuous structures, and after the material discharging mechanism discharges the material belt 001, a plurality of cell units 01 are stacked to form a cell structure.

Fig. 2 is a schematic structural diagram of a cell production device according to an embodiment of the present application. As shown in the structure of fig. 2, the cell production apparatus provided in the embodiment of the present application includes a lamination device 100. It should be noted that the lamination device 100 may be any lamination device 100 in the following technical solutions.

With continued reference to the structure shown in fig. 2, in an embodiment of the present application, the apparatus for producing a battery cell according to the embodiments of the present application further includes two pole piece correction transmission devices 200 disposed in a front stage of the lamination device 100. It should be noted that the two pole piece correction transmission devices 200 are symmetrically arranged and are respectively used for transmitting and correcting pole pieces with two polarities required in the material belt 001. Illustratively, one pole piece correction transmission device 200 is used to transmit a first pole piece 012 and another pole piece correction transmission device 200 is used to transmit a second pole piece 013.

Referring to fig. 1 and 2, the apparatus for producing a battery cell according to the embodiment of the present application further includes a pair of attaching devices 300, where the pair of attaching devices 300 attach the first pole piece 012 and the second pole piece 013 to opposite sides of the diaphragm 02 to form a battery cell unit 01. The butt-joint device 300 includes a first roller 310 and a second roller 320, where the first roller 310 and the second roller 320 are arranged side by side, and only a gap is left between them, through which the power supply unit 01 passes. Of course, both the first roller 310 and the second roller 320 are coupled to a driving structure (not shown). In addition, the first roller 310 and the second roller 320 are provided with an adsorption device to adsorb the pole piece on the pole piece correction transmission device 200.

With continued reference to the structure shown in fig. 2, when the cell production apparatus provided in the embodiment of the present application is applied, the two pole piece correction transmission devices 200 respectively transmit the first pole piece 012 and the second pole piece 013, and after the first pole piece 012 and the second pole piece 013 complete correction positioning by the respective pole piece correction transmission devices 200, the first roller body 310 and the second roller body 320 adsorb the pole pieces that complete correction positioning under the action of the adsorption device, and drive the pole pieces to rotate together; when the first pole piece 012 and the second pole piece 013 rotate between the two rollers along with the roller body, the first pole piece 012 and the second pole piece 013 are pressed against the diaphragm 02 to form a cell unit 01. Then, the material tape 001 including the plurality of battery cell units 01 is transmitted by other transmission devices such as a tensioning wheel and reaches the lamination device 100, and the lamination device 100 completes the stacking operation of the material tape 001 to form a battery cell structure.

Fig. 3 is a schematic structural view of the pole piece correction transmission device 200 shown in fig. 2, and fig. 4 is a cross-sectional view at A-A in fig. 3. It should be appreciated that at least one of the two pole piece correction transmission devices 200 may be provided in the configuration shown in fig. 3. Referring to the structure shown in fig. 3 and 4, when the pole piece correction transmission device 200 is provided, the pole piece correction transmission device 200 includes a transmission mechanism 210 and a correction mechanism 220, where the transmission mechanism 210 has a first transmission surface B1; the correction mechanism 220 has a second conveying surface B2, and the second conveying surface B2 is used for conveying the pole piece conveyed from the first conveying surface B1. The following description is made by taking the pole piece correction transmission device 200 shown in fig. 3 as an example for transmitting the first pole piece 012.

With continued reference to fig. 4, referring to the structure shown in fig. 3, along the traveling direction c of the first pole piece 012, the front end of the second transmission surface B2 is higher than the rear end of the first transmission surface B1. It should be understood that "head end" refers to the end of the first pole piece 012 that is contacted by the transmission mechanism 210 and correction mechanism 220 first, along direction c; similarly, "trailing" means that in direction c, the transfer mechanism 210 and correction mechanism 220 eventually contact one end of the first pole piece 012.

It should be noted that, by setting the head end of the second transmission surface B2 higher than the tail end of the first transmission surface B1, the pole piece correction transmission device 200 according to the embodiment of the present application forms a height difference between the transmission mechanism 210 and the correction mechanism 220, so that when the first pole piece 012 is transmitted from the transmission mechanism 210 to the correction mechanism 220 along the direction c, the following first pole piece 012 may be inserted below the preceding first pole piece 012 on the second transmission surface B2 as shown in fig. 4. At this time, the front first pole piece 012 and the rear first pole piece 012 on the second transmission face B2 are partially stacked, and each first pole piece 012 does not occupy the whole pole piece area on the second transmission face B2 alone, so that the transmission efficiency can be improved.

It should be understood that the form of the first pole piece 012 as it is transferred between the transfer mechanism 210 and the correction mechanism 220 is not limited to the form shown in fig. 4, and is only schematically illustrated herein. Since the first pole piece 012 has a certain softness, the first pole piece 012 will deform somewhat when transferred between the transfer mechanism 210 and the correction mechanism 220 and is not shown here.

It should be noted that the structures of the first conveying surface B1 in the conveying mechanism 210 and the second conveying surface B2 in the correcting mechanism 220 are not limited to the structure shown in fig. 4. The first transmission surface B1 may be a horizontal transmission surface or an inclined transmission surface having an angle with the ground, and the second transmission surface B2 may be a horizontal transmission surface or an inclined transmission surface having an angle with the ground.

In some embodiments, the trailing end of the first conveying surface B1 is not lower than the leading end of the first conveying surface B1 along the traveling direction c of the first pole piece 012. It should be noted that, when the tail end of the first transmission surface B1 is not lower than the head end of the first transmission surface B1, the configuration may make the deformation gesture of the first pole piece 012 better when the first pole piece 012 is transmitted between the transmission mechanism 210 and the correction mechanism 220, so that the first pole piece 012 may be smoothly inserted below the previous first pole piece 012 on the second transmission surface B2.

For convenience of description of the structural relationship between the first conveying surface B1 and the second conveying surface B2, the first conveying surface B1 is a horizontal conveying surface as shown in fig. 4, and the second conveying surface B2 is a horizontal conveying surface as shown in fig. 4.

Referring to the structure shown in fig. 4, in one embodiment of the present application, the height difference between the tail end of the first conveying surface B1 and the head end of the second conveying surface in the vertical direction is h, and the range of h is 2mm to 10mm, or even 3mm to 4mm, for example, 3mm, 3.5mm, or 4mm. Notably, this height difference h affects the transport attitude of the first pole piece 012 between the transport mechanism 210 and the correction mechanism 220.

Referring to the structure shown in fig. 5, a gap L is formed between the tail end of the first transmission surface B1 and the head end of the second transmission surface B2 along the horizontal direction, and the gap L is another factor affecting the transmission posture of the first pole piece 012 between the transmission mechanism 210 and the correction mechanism 220. Illustratively, the gap L ranges from 0mm to 10mm, even from 0 to 8mm. For example, the value of the clearance L is set to be 0mm, 0.1mm, 0.2mm, 0.3mm, 0.4mm, 0.5mm, or even 1mm, 2mm, 3mm, 4mm, 5mm, 6mm, 7mm, or 8mm.

It should be noted that, by adjusting the gap L and the height difference h, the suspension degree of the first pole piece 012 during the transmission between the transmission mechanism 210 and the correction mechanism 220 can be changed, and the suspension degree can affect the transmission posture of the first pole piece 012, thereby affecting the success rate of inserting the subsequent first pole piece 012 into the previous first pole piece 012.

Illustratively, the h value is selected to be 3mm to 4mm and the L value is selected to be 0 to 8mm. When the h value and the L value are set in the above ranges, the first pole piece 012 is preferably transferred between the transfer mechanism 210 and the correction mechanism 220, and the subsequent first pole piece 012 may be preferably inserted between the preceding first pole piece 012 and the second transfer surface B2.

In one embodiment, as shown in fig. 6, the conveying mechanism 210 includes a plurality of first conveying roller bodies 211 disposed in parallel, and the plurality of first conveying roller bodies 211 form a first conveying surface B1; the correcting mechanism 220 includes a plurality of second conveying rollers 221 disposed in parallel, the plurality of second conveying rollers 221 form a second conveying surface B2, and an extending direction of the second conveying rollers 221 forms an angle with an extending direction of the first conveying roller 211.

Illustratively, the plurality of first conveying rollers 211 in the conveying mechanism 210 are sequentially arranged according to the traveling direction c of the first pole piece 012, connected to the same transmission shaft, and driven by the same transmission belt. The plurality of first conveying roller bodies 211 in the conveying mechanism 210 are identical in horizontal height, where 'identical in height' includes the case where the heights are completely identical and the height difference is less than 0.1 mm. It should be understood that the top surfaces of the plurality of first conveying roller bodies 211 in the conveying mechanism 210 form a first conveying surface B1. It should be noted that the plurality of second conveying rollers 221 in the correcting mechanism 220 may be disposed in the same or similar manner as the plurality of first conveying rollers 211 in the conveying mechanism 210.

Of course, the diameters of the first conveying roller 211 and the second conveying roller 221 may be the same or different, and may be specifically adjusted according to actual process requirements. Optionally, the conveying speeds of the conveying mechanism 210 and the correcting mechanism 220 may be the same or different, and may be specifically adjusted according to actual process requirements.

In another embodiment, the conveying mechanism 210 includes a plurality of first conveying rollers 211 disposed in parallel, and the correcting mechanism 220 may include a horizontal conveying member and a pulling member. The horizontal transfer member is used to convey the first pole piece 012, and illustratively, the horizontal transfer member may be composed of a roller body parallel to the first transfer roller body 211, or the horizontal transfer member may be a conveyor belt; the pulling member is used to achieve aligned pulling of the first pole piece 012, and may be selected as a manipulator or the like.

In one embodiment of the present application, the conveying mechanism 210 includes a plurality of first conveying rollers 211 disposed in parallel, and the correcting mechanism 220 includes a plurality of second conveying rollers 221 disposed in parallel.

The correcting mechanism 220 in the pole piece correcting and transmitting device 200 provided in this embodiment further includes a blocking member 222, as shown in fig. 7, where the blocking member 222 is disposed on one side of the second transmitting surface B2 facing away from the first transmitting surface B1 and along an edge of the second transmitting surface B2, so as to limit at least one corner of the first pole piece 012.

In a specific embodiment, referring to the structure shown in fig. 7, the blocking member 222 includes a first stop 2221 and a second stop 2222, the first stop 2221 is disposed along a first edge of the second conveying surface B2, the second stop 2222 is disposed along a second edge of the second conveying surface B2, the first edge is a side edge of the second conveying surface B2 away from the first conveying surface B1, and the second edge is perpendicular to the first edge.

Specifically, taking the first stop 2221 arranged along the direction Y, the second stop 2222 arranged along the direction X as an example; the transmission process of the first pole piece 012 is: first, the transfer mechanism 210 transfers the first pole piece 012 in the direction c onto the second transfer face B2 of the correction mechanism 220, and then transfers the first pole piece 012 in an oblique direction (a direction oblique to the direction X toward the direction Y) to the stopper 222 using the second transfer face B2 to achieve positioning. It will be appreciated that the first pole piece 012 on the second conveying surface B2 includes a direction X component speed and a direction Y component speed, and that the first and

second stops

2221, 2222 cooperate to align at least one leg of the first pole piece 012.

It should be noted that, too small or too large an angle θ between the first conveying roller 211 and the second conveying roller 221 easily results in too fast a unidirectional movement speed of the first pole piece 012 in the direction X or the direction Y, and thus results in alignment failure or long alignment time. In this embodiment, the angle range of the included angle θ is set to be 30 ° to 60 °, so that the alignment efficiency of the first pole piece 012 can be ensured, and the first pole piece 012 can be aligned quickly.

With continued reference to the structure shown in fig. 7, since the dimension of the first pole piece 012 in the direction Y is greater than the dimension in the direction X, the dimension of the first stop 2221 in the direction Y may be set to be greater than the dimension of the second stop 2222 in the direction X. Alternatively, the first stop 2221 may be provided to include at least two sub-stops, with the at least two sub-stops being spaced apart along the first edge.

In one embodiment, as shown in fig. 8, at least a portion of the blocking member 222 may be telescopically operable with respect to the second conveying surface B2 in a vertical direction d. It should be appreciated that for angular reasons, only the first stop 2221 is shown in fig. 8.

It should be noted that, in the pole piece correction transmission device 200 provided in this embodiment of the present application, at least a portion of the blocking member 222 may perform a telescopic operation along a direction perpendicular to the second transmission surface B2, and specifically, the first pole piece 012 in the correction process may be blocked by the blocking member 222 in cooperation with the telescopic operation, so as to avoid the first pole piece 012 from flying out. Meanwhile, when the first pole piece 012 performs the subsequent pasting operation, the height m of the blocking member 222 beyond the second conveying surface B2 can be shortened to avoid.

Therefore, the pole piece correction transmission device 200 provided in the embodiment of the present application can improve the stability of the device for the transmission and correction of the first pole piece 012, so that the production efficiency can be improved.

In one possible embodiment, a blocking portion may be provided in the subsequent counter-application device 300, the blocking portion having a groove into which the first stopper 2221 is inserted. When the first block 2221 is in the lifting position, the top of the first block 2221 is embedded into the groove to form a more effective shielding for the first pole piece 012, so that the first pole piece 012 is prevented from flying out of the correction mechanism 220 from the top of the first block 2221, and the shutdown and the production efficiency improvement are avoided.

In some embodiments, the pole piece correction transmission device 200 provided in this application further includes an air blowing mechanism 230 as shown in fig. 8, where the air blowing mechanism 230 is disposed on a side of the second transmission surface B2 facing the first transmission surface B1, and is at least used for blowing air to the rear end of the first pole piece 012 transmitted to the second transmission surface B2, so that the subsequent first pole piece 012 can be smoothly inserted between the previous first pole piece 012 and the second transmission surface B2 located on the second transmission surface B2, so as to improve the success rate of inserting the subsequent first pole piece 012 into the previous first pole piece 012, prevent a problem in a transmission form between the first pole pieces 012, and improve the transmission success rate of the device. It should be understood that "front end" refers to the portion of the first pole piece 012 that first contacts the transfer mechanism 210 or the correction mechanism 220 in the direction c, and that "rear end" refers to the portion of the first pole piece 012 that later contacts the transfer mechanism 210 or the correction mechanism 220 in the direction c. Of course, the blowing mechanism 230 may be provided between the conveying mechanism 210 and the correcting mechanism 220 as shown in fig. 8. Of course, the blowing mechanism 230 may also be disposed below the calibration mechanism 220, and the blowing mechanism 230 blows air to be transferred through the gap between the second transfer roller bodies 221.

It should be noted that the blowing mechanism 230 may include one or more blowing nozzles. In one embodiment, the blowing mechanism 230 includes a plurality of nozzles, and the plurality of nozzles are spaced apart along the direction Y. It should be understood that a plurality of nozzles may be selectively opened and closed, or the blowing mechanism 230 may be always opened to control the amount of blowing air.

It should be noted that, the closer the blowing mechanism 230 is to the second transmission surface B2 in the vertical direction, the larger the force of the blowing mechanism 230 on the first pole piece 012 under the same air output condition, whereas the air output of the blowing mechanism 230 can be reduced under the same force condition.

In some embodiments, the pole piece correction transmission device 200 provided in the embodiments of the present application further includes a pressing mechanism 240 disposed above the first transmission surface B1 as shown in fig. 8, where the pressing mechanism 240 has a pressing station and a lifting station, and when the pressing mechanism 240 is in the pressing station, a pressing transmission space of the first pole piece 012 is formed between the pressing mechanism 240 and the first transmission surface B1; when the hold-down mechanism 240 is in the raised position, the first pole piece 012 is moved out of the hold-down transfer space.

It should be noted that, when the pole piece correction transmission device 200 with the pressing mechanism 240 is applied, the pressing mechanism 240 moves downward until a pressing transmission space is formed with the first transmission surface B1, and the first pole piece 012 can move along the direction c relative to the pressing transmission space; when the first pole piece 012 reaches a preset position, the pressing mechanism 240 releases the first pole piece 012; the released first pole piece 012 moves on the second transfer surface B2 of the correction mechanism 220 for correction.

It should be understood that when the first pole piece 012 is partially transferred from the first transfer surface B1 to the second transfer surface B2, since the first pole piece 012 is partially located in the holding transfer space, the first pole piece 012 is only moved in the direction c with respect to the second transfer surface B2; when the holding mechanism 240 is switched from the holding position to the lifting position, the first pole piece 012 is moved on the second conveying surface B2 for correction. It should be noted that, by controlling the pressing mechanism 240, the pole piece correction transmission device 200 provided in the embodiment of the present application may control where the first pole piece 012 starts to perform movement correction on the second transmission surface B2, so as to prevent the first pole piece 012 from flying out of the correction area, and improve the stability of the first pole piece 0121 in the transmission and correction process, thereby improving the correction success rate.

In a specific embodiment, the pressing mechanism 240 includes at least two pressing members, and the at least two pressing members are disposed at intervals along the direction Y, and each pressing member can rotate around its own axis. It should be noted that the pressing mechanism 240 may include only one pressing member, or two pressing members, or other number of pressing members, as required. As for the shape of the pressing member, the pressing member may be a rubber wheel or a metal wheel or a brush, and the pressing member may be specifically configured according to the requirement, which is not described herein.

In one embodiment, along the travelling direction c of the first pole piece 012, the position of the pressing member relative to the first transmission surface B1 is adjustable, so that the pole piece correction transmission device 200 provided in the embodiment of the present application is suitable for first pole pieces 012 with different sizes, and the application scenario of the device is widened.

Fig. 9 is a schematic structural view of the lamination device 100 shown in fig. 2. Referring to the structure shown in fig. 9, the lamination device 100 includes:

the material discharge mechanism 110, the material discharge mechanism 110 is used for conveying the material belt 001, the material discharge mechanism 110 comprises a material discharge assembly, and at least part of the material discharge assembly adsorbs a diaphragm 02 between adjacent electric core units 01 in the material belt 001 discharged from a material discharge opening;

a material stage 120, wherein the material stage 120 is used for receiving the material belt 001 discharged through the material discharge port;

the stop part 130, the stop part 130 is arranged at one end of the material platform 120 deviating from the material outlet so as to limit the electric core unit 01 in the material belt 001.

It should be noted that, in the lamination device 100 provided by the embodiment of the present application, the material-discharging component in the material-discharging mechanism 110 has an adsorption function, and can reversely pull the membrane 02 between the adjacent cell units 01 when the material belt 001 passes through the material-discharging opening, so as to improve the flatness of the spacing membrane 02 between the adjacent cell units 01 in the stacked structure. Meanwhile, in the lamination device 100 provided in this embodiment of the present application, the stop portion 130 is disposed at one end of the material stage 120, which is away from the material outlet, and may limit an end surface of one side of the battery cell unit 01, so as to implement an alignment operation of a plurality of battery cell units 01.

It should be noted that, in the lamination device 100 provided in the embodiment of the present application, the material discharging mechanism 110 and the stop portion 130 are used in cooperation, so that the uniformity of stacking the battery cell structures can be improved.

In using the lamination device 100 provided in the embodiments of the present application, the initial position of the material discharge mechanism 110 may be set to be aligned with the center of the base 140, and the material tape 001 and the material discharge mechanism 110 may be initially aligned with the center. During the travel of the tape 001, the tape 001 may gradually shift relative to the spitting mechanism 110. Thus, in one embodiment of the present application, referring to the structure shown in fig. 10, the spitting mechanism 110 is movably mounted to the base 140 along a first direction e, which is parallel to the width direction of the tape 001. It should be noted that the lamination device 100 further includes a detecting mechanism 150, where the detecting mechanism 150 is fixed relative to the base 140, and the detecting mechanism 150 is configured to detect an offset of the tape 001 along the first direction e.

It should be understood that the detecting mechanism 150 need not be disposed on the base 140, but may be fixed relative to the base 140. Wherein, the fixing of the position of the detecting mechanism 150 relative to the base 140 means: the detection mechanism 150 is fixed in position relative to the base 140 during measurement. Of course, when the material discharging mechanism 110 provided in the embodiment of the present application is used, the setting position of the detecting mechanism 150 may be changed according to the requirement.

It should be noted that, the feeding mechanism 110 provided in the embodiment of the present application measures the offset of the material belt 001 in the first direction e through the detecting mechanism 150, and on this basis, the feeding mechanism 110 may be controlled to move along the first direction e relative to the base 140, so as to correct the offset of the material belt 001. In other words, the offset of the tape 001 can be offset by controlling the amount of movement of the spitting mechanism 110 relative to the base 140 in the first direction e.

Specifically, when the tape 001 is transported in the feeding mechanism 110, there is a set transport direction, and as shown in fig. 10, the tape 001 is transported in the direction f. As the web 001 is transported in the direction f, there may be an offset in the first direction e perpendicular thereto. Taking the dashed line M in fig. 10 as a preset edge line of the material tape 001 as an example, the structure shown in fig. 10 has an offset S between the material tape 001 and the dashed line M. It should be understood that the tape 001 may also be beyond the edge line M, which is not described here.

With continued reference to the structure shown in fig. 10, since the offset S is provided between the tape 001 and the broken line M, the tape 001 needs to be moved along the direction e1 in the direction e by the distance S to reach the predetermined position. It is understood that direction e specifically includes direction e1 and the opposite direction of direction e 1.

Based on this, the operator can control the feeding mechanism 110 to move along the direction e1 by the distance S, so that the material tape 001 moves along with the feeding mechanism 110 to reach the preset position. It is noted that when the edge of the tape 001 coincides with the broken line M, the tape 001 is aligned with the center of the base 140.

From the above analysis, the material discharge mechanism 110 in the lamination device 100 according to the present embodiment of the present disclosure may flexibly adjust along the first direction e to achieve the deviation correcting effect of the material belt 001, thereby improving the accuracy of material discharge of the device.

In one possible embodiment, the position of the material discharging mechanism 110 relative to the base 140 can be adjusted in real time along the direction e according to the conveying state of the material belt 001, so as to improve the production efficiency; in another possible embodiment, the position of the material discharging mechanism 110 relative to the base 140 may be adjusted along the direction e by adopting a stop adjustment manner so as to ensure adjustment accuracy.

In mounting the spit mechanism 110 on the base 140, in one embodiment, the spit mechanism 110 may be configured to be mounted to the base 140 via at least one set of slide assemblies. Illustratively, as shown in FIG. 11, the spit mechanism 110 is mounted to the base 140 by four sets of slide assemblies. It should be appreciated that only two sets of slide assemblies are shown in fig. 11 for angular reasons. Specifically, the base 140 is provided with four slide rails 141, each two slide rails 141 form a group and are oppositely arranged along the first direction e, and each slide rail 141 in each group extends along the first direction e; the two sets of sliding rails 141 are disposed opposite to each other along the extending direction of the base 140. The material discharging mechanism 110 is provided with a chute structure, and the chute structure is matched with the slide rail 141 to realize the moving effect of the material discharging mechanism 110 relative to the base 140. Of course, a sliding groove structure may be further disposed on the base 140, and a sliding rail may be disposed on the material discharging mechanism 110, which may be specifically disposed according to the requirement, and will not be described herein. As for the number of the slide rail assemblies, it is also possible to set according to the need.

It should be noted that the structure capable of moving the spitting mechanism 110 along the first direction e relative to the base 140 is not limited to the sliding rail assembly described above, and other components may be used to achieve the moving effect of the spitting mechanism 110 relative to the base 140.

In one embodiment, detection mechanism 150 illustratively includes at least one vision camera. It should be appreciated that when the detection mechanism 150 includes a plurality of vision cameras, the plurality of vision cameras may be disposed at intervals along the direction f to enhance the accuracy of the detection. Of course, the detecting mechanism 150 is not limited to detecting the edge position of the material tape 001 to determine the offset, and may, for example, select a certain position point of a certain material tape 001 for detection, which is not described herein. In one embodiment, to timely find out whether the material belt 001 is deviated from the material outlet, so as to improve the material outlet efficiency, at least one vision camera of the detection mechanism 150 may be disposed on the feeding side of the material outlet.

In one embodiment, the material discharging mechanism 110 provided in the embodiment of the present application further includes a driving mechanism disposed on the base 140, where the driving mechanism is configured to control the material discharging mechanism 110 to move along the first direction e according to the offset S. The driving mechanism includes a motor or an air cylinder, and when the driving mechanism is a motor, an output end of the motor is connected to the screw assembly, and the screw assembly drives the material discharging mechanism 110 to move along the extending direction of the sliding rail 141 relative to the base 140.

The driving mechanism may autonomously drive the discharge mechanism 110 to move according to the offset S measured by the detecting mechanism 150, so as to precisely control the movement amount of the discharge mechanism 110. Illustratively, in one embodiment, the motor and screw may be controlled by a programmable controller to control movement of the discharge mechanism 110. Of course, the driving may also be performed manually by an operator, which is not described herein.

In one particular embodiment, with continued reference to the structure illustrated in FIG. 11, the spitting mechanism 110 illustratively includes a support base 160. Wherein: the support base 160 is movably mounted to the base 140 along a first direction e; the material discharging assembly is disposed on a side of the supporting seat 160 away from the base 140, and the material discharging assembly has a material discharging opening, and it is noted that an included angle is formed between a material discharging direction of the material discharging opening and a horizontal plane, and the included angle is, for example, in a range of-90 ° to 90 °. It should be noted that, the material discharge angle is convenient for setting the following structure such as the material stage 120. It will be appreciated that the inclined downward direction of spit g1 as shown in fig. 11 lies in the horizontal plane with an included angle in the range-90 deg. -0 deg.. Correspondingly, when the direction g1 is obliquely upward, namely in the range of 0 to 90 degrees.

In one embodiment, the discharge direction of the discharge opening in the discharge mechanism 110 provided in the embodiments of the present application is adjustable. For example, the material discharge direction of the material discharge port can be adjusted from the direction g1 in fig. 11 to the direction g2 in fig. 11 according to the requirements, so as to adapt to the production requirements and widen the application scenario.

Of course, the direction of the discharge opening is not limited to-90 ° to 90 °, and is only schematically illustrated here, and the direction of the discharge may be 360 ° and the relevant structure position may be set.

It is noted that there are various structures for realizing the adjustable material discharge angle of the material discharge assembly. In one embodiment, referring to the structure shown in fig. 12, the material discharging assembly is hinged to the supporting seat 160 through a hinge shaft 161, and an adjusting assembly is further disposed between the material discharging assembly and the supporting seat 160. The adjusting component is located on one side of the hinge shaft 161 away from the material outlet to adjust the rotation angle of the material outlet component around the hinge shaft 161. Specifically, the adjustment assembly includes a first adjustment portion provided on the support base 160 and a second adjustment portion provided on the spitting assembly.

It should be understood that there are many possibilities for the structure of the first adjustment part and the second adjustment part, including at least one of the following embodiments.

In one possible embodiment, the first adjustment portion has an arc-shaped adjustment section, the plane in which the arc-shaped adjustment section is located is perpendicular to the first direction e, and the center line of the arc-shaped adjustment section is collinear with the axis line of the hinge shaft 161, and the second adjustment portion is movable relative to the first adjustment portion along the extending direction of the arc-shaped adjustment section.

By adjusting the position of the second adjusting portion relative to the arc-shaped adjusting portion of the first adjusting portion, the material discharging direction of the material discharging opening can be changed around the hinge shaft 161. Illustratively, when the second adjustment portion moves upwardly in a clockwise direction relative to the arc adjustment section, the discharge direction moves downwardly in a clockwise direction.

In a specific embodiment, the first adjustment portion has an arcuate slot forming an arcuate adjustment section and the second adjustment portion has a projection embedded in the arcuate slot and movable in the direction of extension of the arcuate slot. In another embodiment, please continue to refer to the structure shown in fig. 12, the first adjusting portion has a plurality of holes, the plurality of holes are spaced apart to form an arc-shaped adjusting section, and the second adjusting portion has a protrusion or an open hole structure. The direction of the material discharge can be adjusted by adjusting the hole of the first adjusting part aligned with the hole or the convex structure of the second adjusting part.

In another possible embodiment, please refer to the structure shown in fig. 13, the first adjusting portion is a supporting structure 162 provided on the supporting seat 160, and the second adjusting portion is a protruding structure 111 provided on the spitting assembly. Specifically, the support structure 162 is movable along a vertical direction and a horizontal direction relative to the support base 160, and the moving direction of the support structure 162 is perpendicular to the first direction e.

Illustratively, the support structure 162 is a telescoping rod or frame and the projection structure 111 is a projection block or pin structure. With continued reference to the structure shown in fig. 13, the end of the supporting structure 162 is provided with a receiving groove for receiving the protruding structure 111, and the supporting structure 162 can limit the height of the protruding structure 111.

It should be noted that, when the rotation angle of the material discharging assembly around the hinge shaft 161 needs to be adjusted, the protrusion structure 111 may be separated from the accommodating groove, then the supporting structure 162 is moved along the vertical direction and the horizontal direction, and after the supporting structure 162 is moved in place, the protrusion structure 111 falls into the accommodating groove, so as to complete the angle adjustment. Exemplary as shown in fig. 13, the adjustment assembly is moved from the dashed line position of fig. 13 to the solid line position of fig. 13 to effect discharge direction adjustment of the discharge assembly.

Of course, the cam mechanism 10 may not disengage from the receiving slot as the support structure 162 moves. Specifically, the raised structure 111 may rotate relative to the spitting assembly. The protrusion structure 111 may move with the support structure 162 while the support structure 162 moves in a vertical direction or a horizontal direction. It is noted that, during the movement of the protrusion 111 along with the support structure 162, the movement track of the protrusion 111 is shown by an arc dashed line in fig. 20, and the center of the arc dashed line is the axis of the hinge shaft 161.

Of course, in cooperation with the structures of the first adjusting portion and the second adjusting portion, the material discharging mechanism provided in the embodiment of the present application may further include a locking structure disposed between the first adjusting portion and the second adjusting portion. The locking structure is used for limiting the position of the second adjusting part relative to the first adjusting part.

It should be noted that, the locking structure may lock the relative position of the second adjusting portion with respect to the first adjusting portion after each angular adjustment, so as to fix the material discharging direction. For example, please continue to refer to the structure shown in fig. 12, when the first adjustment portion and the second adjustment portion are both hole structures, the locking structure 163 may be a positioning pin. In use, after the second adjusting portion is aligned with respect to the holes of the first adjusting portion, the locking structure 163 can be inserted into the two holes to lock.

Fig. 14 is a schematic view of a structure of a spitting assembly in the spitting mechanism 110 in fig. 10. Referring to the structure shown in fig. 14, an exemplary material discharging assembly includes a first wheel 112 and a second wheel 113 with parallel axes, and a material discharging opening is formed between the first wheel 112 and the second wheel 113. It should be appreciated that the first wheel 112 and the second wheel 113 rotate in opposite directions. In addition, it should be noted that the belt 001 may be disposed between the first wheel 112 and the second wheel 113 before the belt 001 enters the first wheel 112 and the second wheel 113, and the surfaces of the first wheel 112 and the second wheel 113 are in close contact. After the material belt 001 enters the first wheel 112 and the second wheel 113, the first wheel 112 and the second wheel 113 form a material outlet.

Referring to the structure shown in fig. 14, the second wheel 113 adsorbs the separator 02 between the adjacent cells 01 in the tape 001 discharged from the discharge port. It is noted that the second wheel 113 may achieve the adsorbing effect through electrostatic or vacuum function, and the second wheel 113 is an electrostatic adsorbing wheel or a vacuum adsorbing wheel, for example.

For convenience of description, the second wheel 113 is exemplarily disposed below the first wheel 112, and the first wheel 1 and the second wheel 113 are arranged along a vertical direction, and a material discharging direction of the material discharging opening is a downward inclined direction g1. It should be understood that the direction of the discharge port is not limited to the direction g1 shown in fig. 14, and of course, the discharge direction may be set to be an oblique direction or an arbitrary direction according to the requirement, which is not described in detail. The position of the second wheel 113 is not limited to the lower part of the belt 001, and the second wheel 113 may be disposed above the belt 001 according to the requirement. The arrangement direction of the first wheel 112 and the second wheel 113 is not limited to the vertical arrangement shown in fig. 21, and the arrangement positions of the first wheel 112 and the second wheel 113 can be adjusted according to the requirement.

It should be noted that the first wheel 112 may be a driving wheel, and the second wheel 113 may be a driven wheel. Of course, the driving properties of the first wheel 112 and the second wheel 113 are not limited to the above examples, and may be set according to the requirements, and will not be described herein. It should be noted that, in fig. 14, N1 is a vertical plane passing through the axis of the second wheel 113, i.e. a first plane, and N2 is a horizontal plane passing through the axis of the second wheel 113, i.e. a second plane.

For ease of description, an exemplary illustration of the discharge direction shown in fig. 14 will now be made.

With continued reference to the structure shown in fig. 14, after the previous cell 01 is discharged from the discharge port, the membrane 02 between the previous cell 01 and the next cell 01 not discharged from the discharge port is attracted by the second wheel 113. The second wheel 113 applies a reverse force to the diaphragm 02 while the second wheel 113 adsorbs the diaphragm 02, so that the diaphragm 02 moves in the reverse direction, and at this time, the diaphragm 02 changes from the state shown in fig. 14 to the state shown in fig. 15.

When the cell unit 01 is discharged from the discharge port, a force along the direction g1 is applied, so that the cell unit 01 moves along the direction g1 after moving out of the discharge port. The direction g1 can be decomposed into a horizontal rightward direction g11, and if the second wheel 113 does not have the adsorption function, the diaphragm 02 will be separated from the second wheel 113 along the direction g11 along with the previous cell unit 01. Because the second wheel 113 in the material discharging mechanism 110 provided in the embodiment of the present application has an adsorption function, when the second wheel 113 rotates in the arrow direction, a power along the opposite direction of g11 is applied to the diaphragm 02, so that the diaphragm 02 moves along the opposite direction of g 11. Of course, the power applied to the diaphragm 02 by the second wheel 113 may be decomposed into a power in the direction opposite to g11, and is not limited to the power applied only in the direction opposite to g 11.

Specifically, the previous cell unit 01 moves along the direction g11, and the diaphragm 02 connected with the previous cell unit 01 is pulled at this time, so that one end of the diaphragm 02 close to the previous cell unit 01 moves along the direction g11 along with the diaphragm, and the diaphragm 02 close to the second wheel 113 is absorbed by the second wheel 113 and moves along the direction opposite to the direction g11, and as an example, the diaphragm 02 can change from the state in fig. 14 to the state in fig. 15; after the latter cell unit 01 is discharged by the discharge port, the diaphragm 02 connected with the front end of the latter cell unit 01 moves along the direction g1, and at this time, one end of the diaphragm 02 connected with the latter cell unit 01 is pulled and flattened along the direction g 11; when the latter cell unit 01 is stacked on the former cell unit 01, the diaphragm 02 is laid between two adjacent cell units 01, exerting a blocking effect.

It should be noted that, in the lamination device 100 provided in this embodiment of the present application, the second wheel 113 has an adsorption function, and can reversely pull the membrane 02 between the adjacent cell units 01 when the material belt 001 passes through the material outlet, so as to improve the flatness of the spacer membrane 02 between the adjacent cell units 01 in the stacked structure.

In one embodiment of the present application, the material discharge mechanism 110 provided in the embodiment of the present application further includes a guide mechanism having a guide channel P for accommodating the position of the separator 02 after the material discharge assembly is adsorbed.

For a clearer understanding of the guide path P, the first wheel 112 and the second wheel 113 in the above example are taken as the spitting assembly, and the second wheel 113 has an adsorption function. Referring to the structure shown in fig. 15, the guiding channel P is disposed on a side of the second wheel 113 away from the first wheel 112, and the guiding channel P is provided with an inlet, and the inlet is disposed on a discharge side of the material outlet. It will be appreciated that one side of the discharge opening is the feed side so that the strip 001 enters the discharge opening and the other side of the discharge opening is the discharge side. It should be noted that, since the material discharging direction of the material discharging opening may be arbitrarily located in the circumferential direction of the second wheel 113, the guiding mechanism may be disposed at any position along the circumferential direction of the second wheel 113 along the material discharging direction, and fig. 15 is merely illustrative and not limited thereto.

It should be noted that, after the diaphragm 02 enters the guide channel P, the guide channel P may limit the active area of the diaphragm 02 and guide the diaphragm 02, so as to avoid the diaphragm 02 rotating along with the second wheel body 113 and entering the material outlet from the feeding side again, or the diaphragm 02 falling along with gravity and falling down along with gravity cannot be absorbed by the second wheel body 113 and moves along the direction g11 in the opposite direction, thereby improving the success rate of flattening the diaphragm 02, reducing the probability of shutdown maintenance, and improving the production efficiency.

It should be noted that the extending direction of the guiding channel P is not limited to the direction shown in fig. 15, and the extending direction of the guiding channel P may be set according to the requirement, which is not described herein.

In one embodiment, and with continued reference to the structure illustrated in fig. 15, the guiding mechanism includes a first baffle 170 and a second baffle 180 disposed opposite to each other, the first baffle 170 being located on a side of the second baffle 180 away from the second wheel 113, the first baffle 170 cooperating with the second baffle 180 to form the guiding channel P. Specifically, the first baffle 170 forms a first limiting surface toward the second baffle 180, and the second baffle 180 forms a second limiting surface toward the first baffle 170.

It should be noted that, the first limiting surface is used for limiting the maximum moving distance of the diaphragm 02 moving downward along the vertical direction, so as to prevent the diaphragm 02 from falling down under the influence of gravity and being unable to move reversely along with the second wheel 113; the second limiting surface is used for limiting the maximum moving distance of the diaphragm 02 moving upwards along the vertical direction, so that the diaphragm 02 can be prevented from always rotating along with the second wheel body 113 and entering the material outlet from the material inlet side again; meanwhile, the first limiting surface and the second limiting surface are matched to form a guide channel P.

Obviously, the first limiting surface and the second limiting surface can be matched to improve the success rate of flattening the diaphragm 02, reduce the probability of shutdown maintenance and improve the production efficiency.

It should be noted that, after the previous cell unit 01 is discharged from the discharge port, the diaphragm 02 may drop down and contact the first baffle 170, and the first limiting surface of the first baffle 170 limits the first limiting surface, so that the diaphragm 02 enters the guide channel P from the inlet, and after a part of the diaphragm 02 is stacked in the guide channel P, a part of the upper layer of the diaphragm 02 (the diaphragm 02 close to the second wheel body 113) is absorbed by the second wheel body 113 and moves along the opposite direction of g11, so as to realize the opposite pulling of the diaphragm 02 by the second wheel body 113, thereby realizing the flattening effect of the diaphragm 02 between adjacent cell units 01 in the stacked structure.

In one embodiment, at least a portion of the first baffle 170 extends beyond the first plane N1 along the feed side of the feed opening toward the discharge side. It should be noted that, by setting at least a portion of the first baffle 170 beyond the first plane N1, it can be ensured that the diaphragm 02 can contact the first baffle 170 during the falling process, and the success rate of the diaphragm 02 entering the guide channel P is improved.

In one embodiment, in order to avoid that the membrane 02 is cut by the edge of the first baffle 170 when contacting the first baffle 170, so that the membrane 02 cannot effectively isolate the adjacent cell unit 01 in the subsequent cell structure, an arc surface may be disposed at an end of the first baffle 170 beyond the first plane N1, so as to promote smoothness of the end of the first baffle 170 receiving the membrane 02. Of course, the end of the second baffle 180 facing the second wheel 113 may also have an arc surface, which is not described herein.

Since the second limiting surface is used to limit the maximum movement distance of the diaphragm 02 in the vertical direction and upward, in order to better prevent the diaphragm 02 from re-entering the discharge port along with the second wheel 113, it may be provided in an embodiment that the second baffle 180 does not exceed the first plane N1 along the feeding side of the discharge port toward the discharging side.

It should be noted that, the first baffle 170 and the second baffle 180 are not limited to the horizontal arrangement shown in fig. 15, and the first baffle 170 and/or the second baffle 180 may have an included angle with the horizontal plane, and the second baffle 180 may extend obliquely as shown in fig. 16. When the second limiting surface extends obliquely, it is required to ensure that the edge of the second limiting surface facing the second wheel 113 is not higher than the second plane N2; when the second limiting surface is a horizontal surface, the whole second limiting surface is not higher than the second plane N2.

Taking the second baffle 180 as an example, in an exemplary embodiment, the second limiting surface coincides with the second plane N2, that is, the plane in which the second limiting surface lies passes through the axis of the second wheel body 113. In another possible embodiment, a side edge of the second limiting surface facing the second wheel body 113 is located between the second plane N2 and the first limiting surface.

It should be noted that, along the vertical direction, a distance H may be provided between the edge of the second limiting surface facing the side of the second wheel 113 and the lowest point of the second wheel 113, where H is greater than or equal to 0 and less than 2mm. It should be appreciated that the smaller the H value, the closer the second limiting surface is to the lowest point of the second wheel 113. By way of example, H may be 0mm, 0.5mm, 1mm, 1.5mm, etc.

It may also be provided that a horizontal gap I exists between the edge of the second limiting surface facing the side of the second wheel body 113 and the second wheel body 113, and the range of I is 0mm < I < 0.5mm. When the I value is too small, if foreign matters such as glue exist on the surface of the second wheel 113, the second baffle 180 may interfere with the surface of the second wheel 113 to affect the normal rotation of the second wheel 113; when the I value is too large, the second baffle 180 may not effectively block the diaphragm 02, and a situation may occur in which the diaphragm 02 passes through a gap between the second baffle 180 and the surface of the second wheel 113. By way of example, I may be 0.05mm, 0.1mm, 0.2mm, 0.3mm, 0.4mm, 0.45mm.

It should be noted that, the value of H affects the separation point of the diaphragm 02 and the second wheel 113, so as to affect the flattening effect of the diaphragm 02 in the subsequent stacked structure, so that the values of H and I can be selected according to the requirement. For example, the range of I is set to be 0.1 mm.ltoreq.I.ltoreq.0.4 mm, and the range of H is set to be 0.5.ltoreq.H.ltoreq.1.5 mm. It is to be understood that when the values of H and I are selected to be in the above-described ranges, the flattening effect of the membrane 02 in the stacked structure can be enhanced.

It should be noted that, when the first baffle 170 is horizontally disposed as shown in fig. 15 and the second baffle 180 is horizontally disposed as shown in fig. 15, the distance between the first limiting surface of the first baffle 170 and the second limiting surface of the second baffle 180 is D in the vertical direction, and the D value may be set according to the requirement to change the dimension of the guide channel P in the vertical direction, so as to define the active space of the diaphragm 02.

In one embodiment of the present application, the guiding mechanism further includes a third baffle 190, one end of the third baffle 190 is connected to the first baffle 170, and the other end of the third baffle 190 is connected to the second baffle 180, so as to close one side opening of the guiding channel P and prevent the diaphragm 02 from moving out from the side opening.

In an embodiment of the present application, the material discharging mechanism 110 provided in the embodiment of the present application further includes an auxiliary air blowing mechanism J, where the auxiliary air blowing mechanism J is located on the discharging side of the material discharging port and is located on the side of the material belt 001 away from the second wheel body 113, so as to change the moving path of the spacer film 02 of the adjacent cell unit 01.

It should be noted that, the material discharging mechanism 110 provided in this embodiment of the present application changes the moving path of the diaphragm 02 through the auxiliary air blowing mechanism J, so that the diaphragm 02 may be better absorbed by the second wheel body 113, thereby improving the success rate of the second wheel body 113 absorbing the diaphragm 02, so as to improve the success rate of flattening the diaphragm 02, reduce the probability of shutdown maintenance, and improve the production efficiency.

For example, the auxiliary blowing mechanism J may include one or more blowing nozzles. In one embodiment, the auxiliary blowing mechanism J includes a plurality of nozzles, and the plurality of nozzles are disposed at intervals in a direction parallel to the axis of the second wheel 113.

In setting up the lamination device 100 provided in the embodiment of the present application, it may be provided that the lamination device 100 further includes an auxiliary alignment mechanism 131 as shown in fig. 17, and the auxiliary alignment mechanism 131 is used to move the battery cell 01 in a direction approaching the stop 130.

Notably, the embodiment of the application provides lamination device 100, which adopts the cooperation of stop part 130 and auxiliary alignment mechanism 131, and can shorten the allowance of the side end faces of the opposite pole pieces of diaphragm 02, so that the stacking uniformity of the battery cell structure can be improved, the lamination process precision is improved, meanwhile, the battery space waste is reduced, the diaphragm consumption is reduced, the cost is reduced, and the potential safety hazard of batteries caused by poor stacking uniformity is reduced.

Specifically, in the process that the material discharging mechanism 110 alternately sends the battery cell units 01 and the diaphragms 02 to the material table 120, in order to ensure that the battery cell units 01 in the material belt 001 can be at the same height each time they fall onto the material table 120, so as to ensure that the auxiliary alignment mechanism 131 can move each battery cell unit 01 towards the direction close to the stop portion 130, the lamination device 100 provided in this embodiment further includes a lifting mechanism 121, where the lifting mechanism 121 is connected to the material table 120 and is used to make the material table 120 rise or fall. Specifically, when the previous cell unit 01 falls into the table 120 and abuts against the stopper 130 by the auxiliary alignment mechanism 131, as shown in fig. 19, the lifting mechanism 121 drives the table 120 to be lowered by a set distance from the position in fig. 18. The set distance may be, for example, the thickness of the cell unit 01. The to-be-spitted material mechanism 110 sends the next cell unit 01 to the material platform 120, at this time, the auxiliary alignment mechanism 131 can still act on the next cell unit 01 to make it abut against the stop portion 130, at this time, as shown in fig. 20, the end face of the next cell unit 01 is aligned with the end face of the previous cell unit 01. So reciprocating, can realize the terminal surface alignment of a plurality of electric core units 01, and then guarantee that the regularity of electric core structure that forms after the stack is higher.

In order to ensure that the material stage 120 is convenient to adjust in a lifting manner, the table top of the material stage 120 in this embodiment may be parallel to the horizontal plane.

In providing the structure of the auxiliary alignment mechanism 131, there are a plurality of implementation possibilities for the auxiliary alignment mechanism 131, at least one of the following embodiments.

In one possible design of this embodiment, referring to fig. 18, the auxiliary alignment mechanism 131 is a friction mechanism, which is shown in the form of a friction member. The friction member may be, for example, a roller or brush as shown in fig. 18.

Specifically, the auxiliary alignment mechanism 131 is disposed above the material stage 120, and a distance between the auxiliary alignment mechanism 131 and a table top of the material stage 120 is adjustable; the circumferential surface of the auxiliary alignment mechanism 131 can contact with the upper surface of the cell unit 01, and the auxiliary alignment mechanism 131 can rotate around its own axis to drive the cell unit 01 to move in a direction approaching the stopper 130.

In this possible design, the friction mechanism further comprises a driving member (not shown in the figures) in driving connection with the friction member to rotate the friction member about its own axis. The drive member may be, for example, an electric motor.

Specifically, with continued reference to the structure shown in fig. 18, the driving member drives the auxiliary alignment mechanism 131 to rotate in the arrow direction O, and since the circumferential surface of the auxiliary alignment mechanism 131 is in contact with the upper surface of the cell unit 01, the cell unit 01 can be driven by friction force to move in the arrow direction g11 until the cell unit 01 abuts against the stopper 130.

It is worth mainly that, in actual production, because the specifications of the battery cell units 01 are different, the thicknesses are also different, in order to adapt to the battery cell units 01 with different thicknesses, the distance between the auxiliary alignment mechanism 131 and the upper surface of the material table 120 is adjustable, so as to ensure that the circumferential surface of the auxiliary alignment mechanism 131 can be in contact with the upper surface of the battery cell unit 01, and therefore, the battery cell unit 01 can be driven to move along the arrow direction g11 by friction force until the battery cell unit 01 is abutted against the stop part 130. The position of the auxiliary alignment mechanism 131 may be adjusted according to the thickness of the battery cells 01 to be stacked before production, and after the adjustment, the auxiliary alignment mechanism 131 is fixed.

In a specific embodiment, as shown in fig. 20, in order to facilitate adjustment of the distance between the auxiliary alignment mechanism 131 and the upper surface of the table 120, the stopper 130 is provided with a plurality of mounting positions spaced apart in the height direction of the stopper 130, and the auxiliary alignment mechanism 131 may be selectively fixedly mounted in any of the mounting positions.

In another specific embodiment, as shown in fig. 21, one end of the connection portion may be provided to be connected to the auxiliary alignment mechanism 131, the other end is provided with the weight 1311, and a portion between both ends of the connection portion is hinged to the stopper 130 by a hinge shaft. It is noted that the distance between the auxiliary alignment mechanism 131 and the table 120 is adjusted by changing the mass of the weight 1311.

It should be noted that, in order to facilitate adjusting the distance between the auxiliary alignment mechanism 131 and the upper surface of the material platform 120, the auxiliary alignment mechanism 131 may not be connected with the stop portion 130, for example, the lamination device 100 further includes a slide rail and a telescopic device, the slide rail is located above the material platform 120, the length direction of the slide rail is perpendicular to the plate surface of the stop portion 130, one end of the telescopic device is connected with the slide rail, the telescopic device can reciprocate along the length direction of the slide rail, and the other end of the telescopic device is connected with the auxiliary alignment mechanism 131 to drive the auxiliary alignment mechanism 131 to ascend or descend relative to the material platform 120.

Note that, the number of the auxiliary alignment mechanisms 131 may be one or plural, and when the number of the auxiliary alignment mechanisms 131 is plural, the plurality of auxiliary alignment mechanisms 131 are arranged at intervals in the horizontal direction. In order to be convenient for adjust, can link together a plurality of supplementary alignment mechanism 131, when the position of needs regulation supplementary alignment mechanism 131, can adjust a plurality of supplementary alignment mechanism 131 simultaneously, adjust the degree of accuracy is higher, and only need fix a connecting portion and can realize the fixed of a plurality of connecting portions, convenient operation is swift, has improved production efficiency. Of course, when the number of the auxiliary alignment mechanisms 131 is plural, the plurality of auxiliary alignment mechanisms 131 may have the same structure or may have different structures.

When the friction mechanism is provided, the friction mechanism may also be provided to include a telescopic device, such as an air cylinder, where the air cylinder is connected with the auxiliary alignment mechanism 131 to drive the auxiliary alignment mechanism 131 to reciprocate, and because there is a friction force between the auxiliary alignment mechanism 131 and the upper surface of the battery cell unit 01, the battery cell unit 01 is driven to move in a direction approaching the stop portion 130 until the battery cell unit 01 abuts against the stop portion 130.

At this time, the auxiliary alignment mechanism 131 is not limited to the roller and the brush, and the auxiliary alignment mechanism 131 may be rotatable about its own axis, or may be stationary, as long as it can move in a direction approaching the stopper 130 by driving the battery cell 01 by friction force.

Note that, the auxiliary alignment mechanism 131 may be a manipulator, and the manipulator may grasp the cell unit 01 and drag the cell unit 01 to a position where the cell unit 01 abuts against the stop portion 130.

In another possible design of this embodiment, referring to fig. 22, the secondary alignment mechanism 131 is shown as an adsorption mechanism. The stopper 130 is provided with a suction channel 1312, and the suction portion of the auxiliary alignment mechanism 131 corresponds to the suction channel 1312, so as to suck the battery cell unit 01 to a position abutting against the stopper 130.

It should be noted that the shape and size of the adsorption channel 1312 should be designed to prevent the cell unit 01 from entering the adsorption channel 1312 without affecting the adsorption performance of the auxiliary alignment mechanism 131.

When provided, the auxiliary alignment mechanism 131 may be a negative pressure suction mechanism or a magnetic suction mechanism. When the auxiliary alignment mechanism 131 is a negative pressure suction mechanism, the suction portion is a negative pressure suction port.

In an embodiment of the present application, referring to the structure shown in fig. 23, the lamination device 100 provided in the embodiment of the present application further includes a limiting mechanism 132, where the limiting mechanism 132 is located above the material table 120, and a minimum distance between a lower surface of the limiting mechanism 132 and a table surface of the material table 120 is adapted to a sum of a thickness of the battery cell 01 and a thickness of the diaphragm 02.

It should be noted that, in the lamination device 100 provided in this embodiment, by providing the limiting mechanism 132, the electric core unit 01 falling onto the material table 120 can be limited in the stacking process.

Specifically, in use, the limiting mechanism 132 may limit each of the battery cells 01, or may limit a plurality of stacked battery cells 01. For example, before the first cell unit 01 falls into the stage 120, the distance between the lower surface of the stopper 132 and the table surface of the stage 120 is set to the sum of the thickness of the cell unit 01 and the thickness of the diaphragm 02, and since the diaphragm 02 is thin, the first cell unit 01 can enter the space formed between the stopper 132 and the stage 120 and hardly tilt upward. For another example, the distance between the lower surface of the limiting mechanism 132 and the table top of the material table 120 is set to be the sum of the thicknesses of the plurality of battery cell units 01 and the thicknesses of the plurality of diaphragms 02, at this time, the plurality of battery cell units 01 are sequentially stacked in the space formed between the limiting mechanism 132 and the material table 120, at this time, the limiting mechanism 132 limits the plurality of battery cell units 01, and the tilting degree of the plurality of battery cell units 01 is reduced.

It should be noted that the distance between the lower surface of the limiting mechanism 132 and the table 120 may be achieved by lifting the table 120, and the limiting mechanism 132 may be further configured to be capable of moving relative to the table 120, so as to change the distance between the lower surface of the limiting mechanism 132 and the table top of the table 120.

Specifically, when the limiting mechanism 132 is fixed, the lifting mechanism 121 can drive the material platform 120 to move, so as to ensure that the battery cell units 01 in the material belt 001 can be at the same height each time they fall onto the material platform 120. It should be noted that, the positioning method does not need to adjust the position of the material discharging mechanism 110 from time to time, so as to improve the production efficiency.

In another possible design, the position of the stop mechanism 132 relative to the table 120 may be adjusted as desired to increase the distance between the lower surface of the stop mechanism 132 and the table top of the table 120 or to decrease the distance between the lower surface of the stop mechanism 132 and the table top of the table 120. It should be appreciated that the adjustment operation needs to match the discharge angle of the discharge mechanism 110, and avoid interfering with the discharge of the discharge mechanism 110 when adjusting the position of the limiting mechanism 132.

For example, as shown in fig. 23, the stop portion 130 is provided with a chute, the extending direction of the chute is perpendicular to the horizontal reference surface, and the position of the limiting mechanism 132 can be adjusted along the length direction of the chute. Alternatively, the limiting mechanism 132 is detachably connected with the stop portion 130, the stop portion 130 is provided with a plurality of mounting positions, the plurality of mounting positions are arranged at intervals along the height direction of the stop portion 130, and the limiting mechanism 132 is fixedly mounted in the mounting positions. Alternatively, the limiting mechanism 132 is connected to a telescopic device disposed above the material stage 120, and the telescopic device can move the limiting mechanism 132 toward the material stage 120 or away from the material stage 120 to adjust the position of the limiting mechanism 132. It should be noted that, at this time, the limiting mechanism 132 is not required to be connected to the stop 130. The telescopic device can be an air cylinder or an electric cylinder.

Based on the above two designs, the limiting mechanism 132 and the material table 120 may be disposed to move, which is not described herein.

It should be noted that, the greater the number of stacked battery cells 01, the more obvious the tilting degree, and when the number of stacked battery cells 01 is smaller, each battery cell 01 may not be limited. When the lamination device 100 performs the limiting on the plurality of stacked battery cell units 01, the limiting mechanism 132 may be installed when the limiting is required. For example, when ten battery cells 01 are stacked together, the stopper mechanism 132 may be installed at a suitable position, for example, the stopper mechanism 132 is installed at a position where the distance between the lower surface thereof and the table surface of the table 120 is the sum of the thickness of the ten battery cells 01 and the thickness of the ten diaphragms 02, and the stopper is performed on the ten battery cells 01 at the same time.

When the limiting mechanism 132 is provided, please continue to refer to the structure shown in fig. 23, the limiting mechanism 132 includes an arc-shaped section 1321, and the arc-shaped section 1321 protrudes toward the material stage 120. Specifically, the distance between the arc-shaped segment 1321 and the table surface of the material table 120 gradually decreases from the end of the limiting mechanism 132 away from the stop 130 to the end of the limiting mechanism 132 close to the stop 130. This facilitates the cell unit 01 entering the space between the stop mechanism 132 and the table 120.

In one embodiment, the lower surface of the limiting mechanism 132 further includes a horizontal segment 1322, the horizontal segment 1322 is connected to the arc segment 1321, and the horizontal segment 1322 is tangent to the lowest point of the arc segment 1321; illustratively, the horizontal segment 1322 is integrally formed with the curved segment 1321.

It is noted that if the table top of the material table 120 is parallel to the horizontal reference plane, the horizontal segment 1322 is parallel to the horizontal reference plane. The minimum distance between the horizontal segment 1322 and the table top of the table 120 is adapted to the sum of the thickness of the cell 01 and the thickness of the membrane 02.

With continued reference to the structure shown in fig. 23, the limiting mechanism 132 may further include a rolling member 1323, where a circumferential surface of the rolling member 1323 can contact with an upper surface of the battery cell unit 01, and the rolling member 1323 can rotate around its own axis to drive the battery cell unit 01 to move in a direction approaching the stop portion 130.

It should be noted that the rolling member 1323 may perform an auxiliary alignment function, and the rolling member 1323 may cooperate with the auxiliary alignment mechanism 131 to perform an auxiliary alignment operation. Of course, the auxiliary alignment operation may be performed even directly using the rolling member 1323 without separately providing the auxiliary alignment mechanism 131. It should be appreciated that when the stop mechanism 132 is integrated with the rolling element 1323, both the stop and auxiliary alignment functions may be performed.

In one embodiment, the stop mechanism 132 is provided with a receiving slot in which the rolling member 1323 is mounted by a rotating shaft, and the distance between the lowest end of the rolling member 1323 and the table top of the table 120 is not greater than the minimum distance between the stop mechanism 132 and the table top of the table 120. In this way, the rolling member 1323 can be ensured to contact with the upper surface of the battery cell 01, so that the battery cell 01 is driven to move in the arrow direction g11 by friction until the battery cell 01 abuts against the stopper 130.

Of course, the rolling elements 1323 may be selected as rollers or brushes, and the number of the rolling elements 1323 may be one or more. When the number of the rolling members 1323 is plural, the plural rolling members 1323 are disposed at intervals in the depth direction of the accommodation groove.

In addition, during the stacking of the battery cells 01, there is also a possibility that a plurality of battery cells 01 may be stacked too high at the end facing away from the stop 130. When a plurality of the cell units 01 are stacked too high here, the discharge port of the discharge mechanism 110 may be blocked. In one embodiment, referring to the structure shown in fig. 24, the length of the upper surface of the material stage 120 is smaller than the length of the cell unit 01, so that the tail of the cell unit 01 can be bent downward.

In use, since the length of the upper surface of the material stage 120 is smaller than the length of the battery cell unit 01, when the front end of the battery cell unit 01 moves to the stop 130, the tail of the battery cell unit 01 is located outside the material stage 120. At this time, the tail of the cell unit 01 can be bent downwards, so that the stacking height of the cell unit 01 on one side close to the material outlet of the material outlet mechanism 110 is reduced, and smooth conveying of the subsequent cell unit 01 is ensured.

In one possible design of this embodiment, with continued reference to the configuration shown in fig. 24, the end of the table 120 adjacent to the spitting mechanism 110 is provided with a ramp 122.

It is noted that the angle between the slope 122 and the upper surface of the table 120 is too large, the bending degree of the cell unit 01 is small, and the stack height of the cell unit 01 near the material outlet side of the material outlet mechanism 110 is not significantly reduced. Too small an angle between the slope 122 and the upper surface of the table 120 may cause the cell 01 to be damaged due to the large degree of bending of the cell 01.

In particular setting the structure of the stage 120, the lengths of the stage 120 and the ramp 122 may be configured to set values. Specifically, it is possible to set: the ratio between the difference between the length of the pole piece in the cell unit 01 and the length of the portion of the pole piece located on the upper surface of the material stage 120 and the length of the pole piece is 1/3-2/3. That is, the length of the horizontal section of the table 120 and the length of the slope 122 are configured to be set so that the ratio between the portion of the pole piece on the slope and the total length of the pole piece is 1/3 to 2/3. Of course, other ratios may be set according to the requirements, and will not be described herein.

It will be apparent to those skilled in the art that various modifications and variations can be made to the embodiments of the present invention without departing from the spirit and scope of the invention. Thus, it is intended that the present invention also include such modifications and alterations insofar as they come within the scope of the appended claims or the equivalents thereof.

Claims

1. A lamination apparatus, comprising:

2. The lamination device according to claim 1, further comprising a guide mechanism having a guide channel for receiving the position of the membrane after adsorption of the spitting assembly, the guide channel being provided with an inlet located on the discharge side of the spitting opening.

3. The lamination device of claim 2, further comprising an auxiliary alignment mechanism for moving the cell unit in a direction toward the stop.

4. A lamination device according to any one of claims 1 to 3, further comprising a limit mechanism located above the table, and wherein a minimum distance between a lower surface of the limit mechanism and a table top of the table is adapted to a sum of a thickness of the cell unit and a thickness of a diaphragm.

5. The laminating apparatus according to claim 4, wherein said spitting mechanism is movably mounted to a base in a first direction, said first direction being parallel to a width direction of said tape, said laminating apparatus further comprising a detection mechanism, said detection mechanism being fixed in position relative to said base, said detection mechanism being adapted to detect a deviation of said tape in said first direction.

6. The lamination device of claim 5, wherein the spitting mechanism further comprises a support base, wherein:

the supporting seat is movably arranged on the base along the first direction;

7. A cell production apparatus comprising a lamination device as claimed in any one of claims 1 to 6.

8. The cell production apparatus according to claim 7, further comprising two pole piece correction transmission devices provided at a front end of the lamination device, the two pole piece correction transmission devices being symmetrically arranged and respectively used for transmitting pole pieces of two polarities required in the material tape, at least one of the pole piece correction transmission devices comprising a transmission mechanism and a correction mechanism, the transmission mechanism having a first transmission surface; the correction mechanism has a second transmission surface for transmitting the pole piece transferred from the first transmission surface.

9. The cell production apparatus according to claim 8, wherein a leading end of the second transfer face is higher than a trailing end of the first transfer face in a traveling direction of the pole piece.

10. The cell production apparatus according to claim 8 or 9, wherein the pole piece transporting and correcting device further comprises a pressing mechanism, the pressing mechanism has a pressing station and a lifting station, and when the pressing mechanism is in the pressing station, a pressing transporting space of the pole piece is formed between the pressing mechanism and the first transporting surface; when the pressing mechanism is in the lifting station, the pole piece moves out of the pressing transmission space.