WO2022237645A1 - Lamination device and lamination apparatus having same - Google Patents

Abstract

The present application provides a lamination device and a lamination apparatus having same. The lamination device comprises: a rotation portion, the rotation portion being rotatably provided around the axis of the rotation portion and in a predetermined rotation direction, a plurality of lamination tables being provided on the rotation portion, and the plurality of lamination tables being sequentially arranged around the axis of the rotation portion; and a plurality of feeding mechanisms, the plurality of feeding mechanisms and the rotation portion being spaced apart, and the plurality of feeding mechanisms being sequentially arranged around the axis of the rotation portion and in the predetermined rotation direction, such that the plurality of lamination tables sequentially pass through the feeding mechanisms by rotating the rotation portion to perform feeding on corresponding lamination devices by means of the feeding mechanisms. The lamination device of the present application solves the problem in the prior art of low lamination efficiency of cell pole pieces of a lithium ion battery.

Description

Lamination device and lamination equipment with same

This application claims the priority of the patent application submitted to the State Intellectual Property Office of China on May 8, 2021 with the application number 202110503450.2 and the title of the invention "lamination device and lamination equipment with it".

technical field

This application relates to the field of lithium battery manufacturing. Specifically, it relates to a lamination device and lamination equipment having the same.

Background technique

At present, lithium-ion batteries mostly use stacked cells. The cell pole piece is composed of a positive pole piece, a diaphragm and a negative pole piece. The stacking table drives the diaphragm to move left and right, and then moves to the positive pole Carry out lamination, and stack up to the set number of layers in this way, then cut off the diaphragm, and finish the glue.

However, in the actual production process, the efficiency of the stacking table to perform the stacking action is mostly about 1 second per piece, and the battery electrode sheet is composed of several positive electrode sheets and negative electrode sheets. The preparation process is relatively complicated and requires It takes a lot of time and energy to perform the sequential stacking process, it is not easy to realize mechanized operation, and the production efficiency is low.

Therefore, the stacking method in the prior art is already at the bottleneck stage, and the stacking efficiency cannot be effectively improved. At the same time, the way of moving the diaphragm back and forth is likely to cause deformation of the diaphragm hole inside the diaphragm and poor alignment between the cell and the diaphragm. .

application content

The main purpose of the present application is to provide a stacking device and a stacking device having the stacking device, so as to solve the problem of low stacking efficiency of cell pole pieces of lithium-ion batteries in the prior art.

In order to achieve the above object, according to one aspect of the present application, a stacking device is provided, including: a rotating part, the rotating part is rotatably arranged around its own axis and along a predetermined rotating direction, and a plurality of stacking stages are arranged on the rotating part , a plurality of stacking platforms are arranged in sequence around the axis of the rotating part; a plurality of feeding mechanisms are arranged at intervals from the rotating part, and a plurality of feeding mechanisms are arranged in sequence around the axis of the rotating part and in a predetermined direction of rotation , so that by rotating the rotating part, a plurality of stacking stages pass through each feeding mechanism in sequence, so as to feed the corresponding stacking stages through each feeding mechanism.

In an optional embodiment, the multiple feeding mechanisms are divided into at least one group of feeding assemblies, and each group of feeding assemblies includes a first diaphragm feeding mechanism, a first pole piece feeding mechanism, The second diaphragm feeding mechanism and the second pole piece feeding mechanism are used to sequentially feed the corresponding stacking platform through the first diaphragm feeding mechanism, the first pole piece feeding mechanism, the second diaphragm feeding mechanism and the second pole piece feeding mechanism Feeding.

In an optional embodiment, the number of stacking stations is greater than or equal to the number of feeding mechanisms.

In an optional embodiment, the rotating part includes a plurality of pressing knife assemblies, and the plurality of pressing knife assemblies are arranged in one-to-one correspondence with a plurality of stacking stages, and at least part of each pressing knife assembly is movably set to compress Material located on the corresponding lamination table.

In an optional embodiment, the rotating part includes a membrane cutting assembly, and a membrane cutting assembly is arranged between any two adjacent stacking platforms, and at least part of the membrane cutting assembly can be movably arranged to align the The diaphragm between the two stacking tables is cut off.

In an optional embodiment, the stacking device includes a base, and the rotating part includes: a rotating shaft, which is rotatably arranged on the base around its own axis; The stacking tables are all arranged on the rotating wheel to rotate with the rotating wheel; the rotating disk is sleeved on the rotating shaft to rotate with the rotating shaft, and the rotating disk is drivingly connected with at least one feeding mechanism to drive the feeding mechanism to move.

In an optional embodiment, the multiple feeding mechanisms include a first pole piece feeding mechanism and a second pole piece feeding mechanism, and the turntable is drivingly connected to the first pole piece feeding mechanism and the second pole piece feeding mechanism to drive The first pole piece feeding mechanism and the second pole piece feeding mechanism move.

In an optional embodiment, the stacking device further includes a base, and the first pole piece feeding mechanism and the second pole piece feeding mechanism both include: a moving body, the moving body is arranged on the base and is movably arranged relative to the base, To move between the feeding assembly and the stacking table; the pole piece pick-and-place part, the pole piece pick-and-place part is telescopically set on the moving body to suck the pole piece from the feed component or place the pole piece on the corresponding on the stacking table.

In an optional embodiment, the stacking device further includes a base, and the plurality of feeding mechanisms include a first pole piece feeding mechanism and a second pole piece feeding mechanism, and the stacking device also includes a transmission assembly, and the rotating parts are separated by the transmission assembly. It is connected with the first pole piece feeding mechanism and the second pole piece feeding mechanism, at least a part of the first pole piece feeding mechanism and the second pole piece feeding mechanism are rotatably arranged relative to the base, the first pole piece feeding mechanism and the second pole piece At least another part of the sheet feeding mechanism is slidably arranged relative to the base so as to move relative to the base driven by the transmission assembly.

In an optional embodiment, the transmission assembly includes two groups of crank-rocker mechanisms, and the two groups of crank-rocker mechanisms are respectively arranged corresponding to the first pole piece feeding mechanism and the second pole piece feeding mechanism; One end is connected with the rotating part, and the other end of each crank rocker mechanism is connected with the moving body of the first pole piece feeding mechanism or the second pole piece feeding mechanism, so that the rotating part drives the corresponding moving body to move through the crank rocker mechanism.

In an optional embodiment, the rotating part includes a turntable, and each set of crank-rocker mechanisms includes cranks, connecting rods, and rockers connected in sequence; the turntable is drivingly connected to the crank to drive the crank to rotate; the rocker is connected to the corresponding moving body connected to drive the movement of the subject.

In an optional embodiment, the moving body includes: a slider, which is rotatably connected to the base; a guide rail, which is slidably fitted with the slider and connected to the crank-rocker mechanism, and the guide rail is driven by the crank-rocker mechanism Move relative to the slider to drive the slider to rotate relative to the base.

In an optional embodiment, each set of crank-rocker mechanisms includes: a crank, which is rotatably arranged on the base around a predetermined axis; The guide groove matched with the crank is used to drive the crank to rotate through the turntable.

In an optional embodiment, the two sets of crank-rocker mechanisms are connected by transmission, and the rotating part is alternately driven and connected to each set of crank-rocker mechanisms to drive the two sets of crank-rocker mechanisms to move synchronously.

In an optional embodiment, the number of stacking tables is multiple, and the multiple guide grooves are divided into multiple groups, and the multiple sets of guide grooves are arranged around the axis of the turntable itself, and the multiple sets of guide grooves are connected to the multiple stacking tables one by one. Correspondingly set; each group of guide grooves includes a first guide groove and a second guide groove respectively matched with the cranks of the two groups of crank-rocker mechanisms; the cranks of the two groups of crank-rocker mechanisms are fixedly connected to form a crank combination, and the crank combination moves along the turntable. The direction of rotation is matched with each group of guide grooves in sequence.

According to another aspect of the present application, a lamination equipment is provided, including: the above-mentioned lamination device; a plurality of feeding assemblies, and a plurality of feeding assemblies and a plurality of feeding mechanisms are provided in a one-to-one correspondence to provide The corresponding feeding mechanism feeds materials; the unloading mechanism is set on one side of the rotating part, and is used to unload the finished product after lamination; the conveyor line, the conveyor line and the unloading mechanism are set correspondingly, and is used to unload the finished product. The finished products unloaded by the mechanism are transported to the next station.

Applying the technical solution of the present application, the lamination device of the present application is provided with a rotating part that is rotatable around its own axis and in a predetermined direction of rotation, and a plurality of lamination stages are arranged on the rotating part around the own axis of the rotating part, and a plurality of As for the feeding mechanism spaced apart from the rotating part, a plurality of feeding mechanisms are sequentially arranged around the axis of the rotating part and along a predetermined rotating direction. In this way, by rotating the rotating part so that a plurality of stacking stages pass through each feeding mechanism in sequence, each feeding mechanism feeds the corresponding stacking stage so that during the rotation of the rotating part Multiple laminations reduce the process of going back and forth of the diaphragm, ensure that the force direction of the diaphragm is consistent, and avoid the change of the internal porosity of the diaphragm caused by the discontinuous pulling force of the diaphragm back and forth. At the same time, the above-mentioned setting of the stacking device improves the consistency of the internal resistance of the battery, reduces the time spent on transporting the pole pieces, improves the efficiency of taking out the pole pieces, and realizes the continuity of the production of battery stacks, so that continuous The production of battery cells greatly improves the stacking efficiency of lithium battery cells, and solves the problem of low stacking efficiency of cell pole pieces of lithium ion batteries in the prior art.

Description of drawings

The accompanying drawings constituting a part of the present application are used to provide further understanding of the present application, and the schematic embodiments and descriptions of the present application are used to explain the present application, and do not constitute improper limitations to the present application. In the attached picture:

Fig. 1 shows a schematic structural view of an embodiment of a lamination device according to the present application;

Fig. 2 shows the schematic structural view when the stacking device of the stacking device shown in Fig. 1 is in a feeding state;

Fig. 3 shows the schematic structural view when the stacking device of the stacking device shown in Fig. 1 is in a discharging state;

Fig. 4 shows a schematic structural view of the rotating part of the lamination device shown in Fig. 3;

Fig. 5 shows a structural schematic view of the laminated device shown in Fig. 3 when the rotating shaft and the runner are not included;

Fig. 6 shows a schematic structural view of the crank-rocker mechanism of the lamination device shown in Fig. 3;

Fig. 7 shows a schematic diagram of the state of the stacking device shown in Fig. 1 when it is in the first working state;

Fig. 8 shows a schematic diagram of the lamination equipment shown in Fig. 1 when it is in a second working state;

Fig. 9 shows a schematic diagram of the state of the stacking device shown in Fig. 1 when it is in a third working state;

Fig. 10 shows a schematic diagram of the state of the stacking device shown in Fig. 1 when it is in a fourth working state;

Fig. 11 shows a schematic diagram of the state of the stacking device shown in Fig. 1 when it is in a fifth working state;

Fig. 12 shows a schematic view of the lamination equipment shown in Fig. 1 when it is in the sixth working state;

Fig. 13 shows a schematic diagram of the state of the laminated device shown in Fig. 1 when it is in the seventh working state;

Fig. 14 shows a schematic diagram of the state of the stacking device shown in Fig. 1 when it is in the eighth working state;

Fig. 15 shows a schematic diagram of the state of the lamination equipment shown in Fig. 1 when the lamination is completed.

Wherein, the above-mentioned accompanying drawings include the following reference signs:

1. Rotating part; 11. Rotating shaft; 12. Runner; 13. Turntable; 131. Guide groove; 1311. First guide groove; 1312. Second guide groove;

2. Base;

3. Lamination stage; 31. First lamination stage; 32. Second lamination stage; 33. Third lamination stage; 34. Fourth lamination stage; 35. Fifth lamination stage; 36. Sixth lamination table;

4. Feeding mechanism; 41. The first diaphragm feeding mechanism; 42. The first pole piece feeding mechanism; 43. The second diaphragm feeding mechanism; 44. The second pole piece feeding mechanism; 45. The moving body; 451. The slide Block; 452, guide rail; 46, pole piece picking and placing part; 461, driving part; 47, diaphragm feeding assembly; 48, diaphragm traction assembly;

5. Press knife part; 51. The first press knife part; 52. The second press knife part;

6. Diaphragm cutting assembly; 7. Electrode positioning table; 8. First action position; 9. Second action position;

10. Crank and rocker mechanism; 101. Crank; 1010. Crank combination; 1011. Fan-shaped crank; 10111. Fan-shaped structure; 10112. First fixed rod; 1012. Rod-shaped crank; 10121. Rod-shaped structure; 10122. Second fixation Rod; 102, connecting rod; 103, rocking bar; 1031, first rod body part; 1032, second rod body part; 104, first pin shaft; 105, second pin shaft; 106, third pin shaft; 107, connection rod;

20. Cell; 201. Pole piece; 2011. First pole piece; 2012. Second pole piece; 202. Diaphragm; 2021. First diaphragm; 2022. Second diaphragm; 30. Unloading mechanism; 40. Conveyor line .

Detailed ways

It should be noted that, in the case of no conflict, the embodiments in the present application and the features in the embodiments can be combined with each other. The present application will be described in detail below with reference to the accompanying drawings and embodiments.

As shown in FIGS. 1 to 15 , the present application provides a stacking device including a rotating part 1 and a plurality of feeding mechanisms 4 . The rotating part 1 is rotatably arranged around its own axis and in a predetermined direction of rotation. The rotating part 1 is provided with a plurality of stacking stages 3, and the plurality of stacking stages 3 are arranged in sequence around the own axis of the rotating part 1; a plurality of feeding mechanisms 4 and the rotating part 1 are arranged at intervals, and a plurality of feeding mechanisms 4 are arranged around the axis of the rotating part 1 and arranged in sequence along the predetermined rotation direction, so that by rotating the rotating part 1, a plurality of stacking tables 3 pass through each feeding mechanism 4 in sequence, Each feeding mechanism 4 can be used to feed the corresponding stacking platform 3 .

The stacking device of the present application is provided with a rotating part 1 that is rotatable around its own axis and in a predetermined direction of rotation, and a plurality of stacking stages 3 are arranged on the rotating part 1 around the own axis of the rotating part 1, and a plurality of rotating parts are arranged. 1 spaced feeding mechanism 4, so that a plurality of feeding mechanisms 4 are arranged in sequence around the axis of the rotating part 1 and along a predetermined rotation direction. In this way, by turning the rotating part 1 so that a plurality of stacking stages 3 pass through each feeding mechanism 4 successively, each feeding mechanism 4 carries out feeding to the corresponding stacking stage 3, so that during the rotation of the rotating part 1 Multiple laminations are carried out on the corresponding lamination table 3, which reduces the process of the diaphragm going back and forth, ensures that the force direction of the diaphragm is consistent, and avoids the change of the internal porosity of the diaphragm caused by the discontinuous tension of the diaphragm back and forth. At the same time, the above-mentioned setting of the stacking device improves the consistency of the internal resistance of the battery, reduces the time spent on transporting the pole pieces, improves the efficiency of taking out the pole pieces, and realizes the continuity of the production of battery stacks, so that continuous The production of battery cells greatly improves the stacking efficiency of lithium battery cells, and solves the problem of low stacking efficiency of cell pole pieces of lithium ion batteries in the prior art.

As shown in FIG. 1 , the predetermined rotation direction is the direction A in the figure.

Specifically, the multiple feeding mechanisms 4 are divided into at least one group of feeding assemblies, and each group of feeding assemblies includes a first diaphragm feeding mechanism 41, a first pole piece feeding mechanism 42, a second diaphragm Feeding mechanism 43 and the second pole piece feeding mechanism 44, to pass through the first diaphragm feeding mechanism 41, the first pole piece feeding mechanism 42, the second diaphragm feeding mechanism 43 and the second pole piece feeding mechanism 44 to the corresponding Lamination table 3 loading.

Optionally, the number of stacking stations 3 is greater than or equal to the number of feeding mechanisms 4 .

The cell stacking process of the stacking device of the present application is as follows: with the rotation of the rotating part 1, the diaphragm, the negative pole piece, the diaphragm, the positive pole piece, the diaphragm, the negative pole piece and the diaphragm are sequentially completed on each stacking table 3 The stacking action is performed until the number of stacked sheets reaches the parameter requirements of the battery cell 20, then the stacking is stopped and the diaphragm 202 is cut off, and then the battery cell 20 is unloaded and transported to the next station.

The finished product of the electric core 20 of the present application includes a stacked pole piece 201 and a separator 202 in sequence, and the pole piece 201 includes a first pole piece 2011 that is fed through the first pole piece feeding mechanism 42 and the second pole piece feeding mechanism 44 respectively and the second pole piece 2012 , the diaphragm 202 includes a first diaphragm 2021 and a second diaphragm 2022 that are fed by the first diaphragm feeding mechanism 41 and the second diaphragm feeding mechanism 43 , respectively.

Specifically, a first diaphragm feeding mechanism 41, a first pole piece feeding mechanism 42, a second diaphragm feeding mechanism 43 and a second pole piece feeding mechanism 44 arranged in sequence along a predetermined rotation direction form a set of feeding Assemblies, the stacking device includes one or more sets of feeding assemblies. When there are multiple sets of feeding assemblies, the multiple sets of feeding assemblies are arranged in sequence along the predetermined rotation direction, so as to feed materials to the corresponding stacking platform 3 one by one.

In addition to the feeding assembly, there is at least one unloading mechanism 30 for unloading the stacked electric core 20 and at least one unloading mechanism 30 for unloading the stacking table 3 near the rotating part 1 of the stacking device. The detection mechanism for the detection of laminations.

In one embodiment of the present application, the stacking device includes a set of feeding assemblies and six stacking platforms 3. During the working process of the stacking device, except for the four stacking platforms facing the four feeding mechanisms 4 3, one of the remaining two stacking tables 3 is facing the unloading mechanism 30 for unloading the completed stacked cells 20, and the other stacking table 3 is facing against the stacking The detection mechanism for detecting the laminations on stage 3. The unloading mechanism 30 is located between the second diaphragm feeding mechanism 43 and the second pole piece feeding mechanism 44, and the detection mechanism is located between the second pole piece feeding mechanism 44 and the first diaphragm feeding mechanism 41 to ensure that each lamination Corresponding actions are being carried out at all three stations, realizing the continuity of cell stacking production and improving the stacking efficiency of lithium battery cells.

Among them, the first diaphragm feeding mechanism 41 and the second diaphragm feeding mechanism 43 both include a diaphragm feeding assembly 47 and a diaphragm pulling assembly 48, and the diaphragm feeding assembly 47 is used for unwinding, tension control, and deviation correction of the corresponding diaphragm. process, the diaphragm pulling assembly 48 is used to pull the corresponding diaphragm 202, and the diaphragm pulling assembly 48 pulls one end of the corresponding diaphragm 202 by pulling the film jaws, so that the part of the diaphragm 202 is located at the corresponding stacking table 3 for stacking. piece.

As shown in FIG. 4 , the rotating part 1 includes a plurality of pressing knife assemblies and a diaphragm cutting assembly 6 , and the plurality of pressing knife assemblies are set in one-to-one correspondence with a plurality of stacking stages 3 , and at least part of each pressing knife assembly is movably arranged. , to compress the material on the corresponding lamination table 3. A diaphragm cutting assembly 6 is arranged between any adjacent two stacking stages 3, and at least part of the diaphragm cutting assembly 6 can be movably arranged to perform a process on the diaphragm 202 positioned between two adjacent stacking stages 3. cut off.

Wherein, each group of pressing knife assemblies includes a plurality of pressing knife parts 5, at least one pressing knife part 5 and the rest of the pressing knife parts 5 act alternately, so as to compress the new material fed by the corresponding feeding mechanism 4 on the on the corresponding stacking platform 3, and make the original material positioned on the corresponding stacking platform 3 pressed by the pressing knife assembly all the time.

Preferably, each group of pressing knife assemblies includes a plurality of pressing knife parts 5, and the plurality of pressing knife parts 5 are divided into two groups, each group of pressing knife parts 5 includes two pressing knife parts 5, and the two groups of pressing knife parts 5 are respectively A set of first pressing knife parts 51 and a set of second pressing knife parts 52, the two sets of pressing knife parts 5 are provided in one-to-one correspondence with two diagonal lines of a predetermined rectangle. The two pressure knife parts 5 of each group of pressure knife parts 5 are arranged oppositely along the corresponding diagonal line, and the two groups of pressure knife parts 5 act alternately, so that one group of pressure knife parts 5 will press the material on the corresponding stacking platform 3 When it is released, another set of pressing knife parts 5 will continue to press the material, so as to ensure that each time the stacking table 3 performs lamination, at least one pair of pressing knife parts 5 will press the two ends of the diagonal line of the pole piece and the diaphragm , so that it can be positioned on the corresponding stacking table 3 without moving or falling.

The diaphragm cutting assembly 6 of the present application is a molybdenum wire, and the molybdenum wire moves to contact with the corresponding diaphragm under the action of a driving part (such as a cylinder), and the diaphragm in contact with it is thermally fused by electrifying the molybdenum wire to generate heat , the cut edges of the multi-layer separator can be self-bonded under the heat of thermal cutting. A diaphragm cutting assembly 6 is arranged at the middle position between any adjacent two lamination stages 3, and the diaphragm cutting assembly 6 can simultaneously cut off the diaphragm between two adjacent lamination stages 3 to ensure the stability of the diaphragm. The deformation on both sides is uniform and small, and enough space can be reserved between the laminations of two adjacent lamination stages 3 to ensure that the diaphragms on the next lamination stage 3 can be aligned.

As shown in Fig. 2 and Fig. 4, the stacking device includes a base 2, the rotating part 1 includes a rotating shaft 11, a rotating wheel 12 and a rotating disk 13, and the rotating shaft 11 is rotatably arranged on the base 2 around its own axis. The rotating wheel 12 is sleeved on the rotating shaft 11 to rotate with the rotating shaft 11 , and each stacking platform 3 is set on the rotating wheel 12 to rotate with the rotating wheel 12 . The turntable 13 is sheathed on the rotating shaft 11 to rotate with the rotating shaft 11 , and the turntable 13 is drivingly connected with at least one feeding mechanism 4 to drive the feeding mechanism 4 to move.

Specifically, one end of the rotating shaft 11 is rotatably connected to the base 2 , and the rotating disk 13 and the rotating wheel 12 are sequentially sleeved on the rotating shaft 11 and fixedly connected to the rotating shaft 11 . The base 2 is provided with a rotating shaft driving part, and the rotating shaft driving part is drivingly connected with one end of the rotating shaft 11, so as to drive the rotating shaft 11 to drive the turntable 13 and the runner 12 to rotate synchronously.

Optionally, the rotating shaft driving part includes a motor and a reducer.

In the embodiment shown in Fig. 1 to Fig. 14 of the present application, the runner 12 and the turntable 13 of the stacking device are all hexagonal prisms, the rotation of the rotating part 1 is intermittent rotation, and the number of stacking tables 3 is M , the rotating part 1 is suspended for a predetermined time every time it rotates 360/M degrees, so that each feeding mechanism 4 carries out feeding to the corresponding stacking table 3 respectively.

Wherein, the number of lamination stages 3 is six, and the six lamination stages 3 include a first lamination stage 31, a second lamination stage 32, a third Sheet stage 33, fourth stacking stage 34, fifth stacking stage 35 and sixth stacking stage 36.

As shown in Figures 2 and 3, a plurality of feeding mechanisms 4 include a first pole piece feeding mechanism 42 and a second pole piece feeding mechanism 44, and the rotating disk 13 is connected to the first pole piece feeding mechanism 42 and the second pole piece feeding mechanism 44. Both are driven and connected to drive the first pole piece feeding mechanism 42 and the second pole piece feeding mechanism 44 to move.

In this application, the turntable 13 is driven and connected to the first pole piece feeding mechanism 42 and the second pole piece feeding mechanism 44 to drive the first pole piece feeding mechanism 42 and the second pole piece feeding mechanism 44 to carry out the feeding action. Only one driving part can be used to drive the rotating part 1 to rotate, which reduces the cost of using a separate driving part to drive the movement of the first pole piece feeding mechanism 42 and the second pole piece feeding mechanism 44, and at the same time reduces the cost of the stacking device. volume of.

As shown in Figure 1, both the first pole piece feeding mechanism 42 and the second pole piece feeding mechanism 44 have a first action position 8 for taking materials from the corresponding feeding assembly and a first action position 8 for feeding materials to the corresponding stacking platform 3 Two action positions 9, the first pole piece feeding mechanism 42 and the second pole piece feeding mechanism 44 are movably arranged on the base 2 to move between the first action position 8 and the second action position 9, so as to move the corresponding The pole piece on the pole piece positioning platform 7 moves to the corresponding stacking platform 3 .

As shown in Figures 2 and 3, the first pole piece feeding mechanism 42 and the second pole piece feeding mechanism 44 both include a moving body 45 and a pole piece pick-and-place part 46, and the moving body 45 is arranged on the base 2 and relatively to the base 2 It is movably arranged to move between the feeding assembly and the stacking table 3 . The pole piece pick-and-place part 46 is telescopically arranged on the moving body 45 to suck the pole piece from the feeding assembly or place the pole piece on the corresponding stacking platform 3 .

Wherein, the pole piece pick-and-place unit 46 includes a pole piece adsorption plate for absorbing pole pieces and an adsorption plate drive unit 461 for driving the movement of the pole piece adsorption plate. The adsorption plate drive unit 461 is arranged on the moving body 45, and the adsorption plate drives The part 461 is connected with the pole piece adsorption plate through a telescopic rod, so as to drive the pole piece adsorption plate to extend or retract.

Preferably, the driving part of the adsorption plate is a servo electric cylinder, and the piston rod of the servo electric cylinder is connected with the pole piece adsorption plate through the drive rod, so as to drive the pole piece adsorption plate to move through the telescopic movement of the piston rod. The pole piece adsorption plate stretches out to the feeding assembly to absorb the pole piece and then retracts to move with the moving body 45 between the first action position 8 and the second action position 9, or stretches out to place the pole piece on the stacking table 3. The sheet is retracted to move with the moving body 45 between the first action position 8 and the second action position 9 to complete the conveying action of the pole piece.

Optionally, the moving body 45 is rotatably arranged relative to the base 2 .

Optionally, the moving body 45 is slidably arranged relative to the base 2 .

Optionally, at least a part of the moving body 45 is rotatably arranged relative to the base 2 , and at least another part of the moving body 45 is slidably arranged relative to the base 2 .

Specifically, a plurality of feeding mechanisms 4 include a first pole piece feeding mechanism 42 and a second pole piece feeding mechanism 44, and the stacking device also includes a transmission assembly, and the rotating part 1 is respectively connected to the first pole piece feeding mechanism 42 and the first pole piece feeding mechanism 42 through the transmission assembly. The second pole piece feeding mechanism 44 is connected, at least a part of the first pole piece feeding mechanism 42 and the second pole piece feeding mechanism 44 are rotatably arranged with respect to the base 2, the first pole piece feeding mechanism 42 and the second pole piece feeding mechanism At least another part of 44 is slidably arranged relative to the base 2 so as to move relative to the base 2 driven by the transmission assembly.

In one embodiment of the present application, the transmission assembly includes two sets of crank-rocker mechanisms 10 , and the two sets of crank-rocker mechanisms 10 are respectively arranged corresponding to the first pole piece feeding mechanism 42 and the second pole piece feeding mechanism 44 . One end of each group of crank and rocker mechanisms 10 is connected with the rotating part 1, and the other end of each group of crank and rocker mechanisms 10 is connected with the moving body 45 of the first pole piece feeding mechanism 42 or the second pole piece feeding mechanism 44, so as to rotate The part 1 drives the corresponding moving body 45 to move through the crank rocker mechanism 10 .

Specifically, the rotating part 1 includes a turntable 13, and each group of crank and rocker mechanisms 10 includes a crank 101, a connecting rod 102 and a rocker 103 connected in sequence; the turntable 13 is drivingly connected with the crank 101 to drive the crank 101 to rotate; The corresponding moving bodies 45 are connected to drive the moving bodies 45 to move.

Wherein, the crank 101 is provided with a first connecting hole and a second connecting hole, and the crank 101 is hinged with the base 2 through a first pin shaft 104 passing through the first connecting hole; The second pin shaft 105 is hinged with one end of the connecting rod 102; one end of the rocking rod 103 is hinged with the other end of the connecting rod 102, the rocking rod 103 is provided with a third connecting hole, and the rocking rod 103 is passed through the third connecting hole The third pin shaft 106 is hinged with the base 2 .

Specifically, under the drive of the turntable 13, the crank 101 rotates with the axis of the first pin 104 as the rotation axis, and drives one end of the connecting rod 102 to swing through the second pin 105, and the other end of the connecting rod 102 drives the rocker 103 rotates at a certain angle, and the rotation axis of the rocker 103 is the axis of the third pin shaft 106, thereby driving the moving body 45 of the first pole piece feeding mechanism 42 or the second pole piece feeding mechanism 44 to move relative to the base 2, and finally Realize the movement of the first pole piece feeding mechanism 42 or the second pole piece feeding mechanism 44 between the first action position 8 and the second action position 9 to complete the movement of pole pieces.

As shown in Figure 6, the rocker 103 includes a relatively fixed first shaft part 1031 and a second shaft part 1032, and the third connection hole is arranged at the junction of the first shaft part 1031 and the second shaft part 1032; the first shaft part The end of 1031 away from the second rod part 1032 is hinged with the connecting rod 102 ; the end of the second rod part 1032 away from the first rod part 1031 is hinged with the moving body 45 .

Preferably, each set of crank and rocker mechanisms 10 includes two rockers 103, both of which are connected to the moving body 45, and simultaneously drive the moving body 45 to move, and the two rocking rods 103 are respectively arranged on the first pole piece feeding The opposite sides of the moving body 45 of the mechanism 42 or the second pole piece feeding mechanism 44 . The two rockers 103 are connected by a connecting rod 107, and one of the rocking rods 103 is hinged to the connecting rod 102 to simultaneously drive the two rocking rods 103 to move through a connecting rod 102, so as to ensure the stability of the movement of the corresponding moving body 45 sex.

As shown in FIG. 2 , FIG. 3 and FIG. 5 , the moving body 45 includes a slider 451 and a guide rail 452 , and the slider 451 is rotatably connected to the base 2 . The guide rail 452 is slidingly matched with the slider 451 and connected with the crank-rocker mechanism 10 , and the guide rail 452 moves relative to the slider 451 driven by the crank-rocker mechanism 10 to drive the slider 451 to rotate relative to the base 2 .

Wherein, the pole piece access part 46 is movably arranged on the guide rail 452, so as to move between the first action position 8 and the second action position 9 with the guide rail 452, the pole piece access part 46 can extend relative to the guide rail 452 Or retract, to pick and place the pole piece under the drive of the suction plate driving part 461 .

As shown in Figure 2 and Figure 3, each set of crank-rocker mechanism 10 includes a crank 101, which is rotatably arranged on the base 2 around a predetermined axis; the rotating part 1 includes a turntable 13 for driving the crank-rocker mechanism 10 to move The turntable 13 is provided with a guide groove 131 for cooperating with the crank 101 , so that the turntable 13 drives the crank 101 to rotate. In this way, the turntable 13 rotates with the rotating shaft 11 , so that the guide groove 131 on the turntable 13 drives the corresponding crank 101 to rotate, thereby driving the corresponding crank-rocker mechanism 10 to move.

As shown in FIG. 6 , the two groups of crank-rocker mechanisms 10 are connected by transmission, and the rotating part 1 is alternately driven and connected with each group of crank-rocker mechanisms 10 to drive the two groups of crank-rocker mechanisms 10 to move synchronously.

Wherein, the number of stacking tables 3 is multiple, and the multiple guide grooves 131 are divided into multiple groups, and the multiple groups of guide grooves 131 are arranged around the axis of the turntable 13, and the multiple groups of guide grooves 131 correspond to the multiple stacking tables 3 one by one. Each set of guide grooves 131 includes a first guide groove 1311 and a second guide groove 1312 that match the cranks 101 of two sets of crank-rocker mechanisms 10 respectively; the cranks 101 of the two sets of crank-rocker mechanisms 10 are fixedly connected to form a crank Combination 1010, the crank combination 1010 is sequentially adapted to each set of guide grooves 131 along the rotation direction of the turntable 13 .

In one embodiment of the present application, multiple sets of guide grooves 131 are evenly distributed along the circumference of the turntable 13 to engage with the crank assembly 1010 sequentially as the turntable 13 rotates. Specifically, the rotation of the turntable 13 is intermittent rotation, the number of stacking stages 3 is M, and the number of guide grooves 131 is also M groups. Evenly distributed; every time the turntable 13 rotates 360/M degrees, it will pause for a predetermined time for the corresponding feeding mechanism 4 to perform a feeding; every time the turntable 13 rotates 360/M degrees, there will be a group of guide grooves 131 and crank The combination 1010 is matched once (that is, the first guide groove 1311 is matched once with the crank 101 of the corresponding crank-rocker mechanism 10, and the second guide groove 1312 is also matched once with the crank 101 of the corresponding crank-rocker mechanism 10 , when one crank 101 fits with the turntable 13, the other crank 101 is disengaged from the turntable 13) to drive the crank combination 1010 to rotate 360 degrees, so that the first pole piece feeding mechanism 42 or the second pole piece feeding mechanism 44 are respectively Carry out a feeding on the corresponding lamination table 3, so that, under the rotation of the turntable 13, the crank assembly 1010 and the plurality of sets of guide grooves 131 are sequentially adapted to move between the first action position 8 and the second action position 9 Reciprocating motion for multiple feedings.

As shown in Fig. 2 and Fig. 3, the crank 101 of one set of crank-rocker mechanism 10 is a sector crank 1011, and the first guide groove 1311 is an arc-shaped guide groove matched with the shape of the sector crank 1011; The crank 101 of the mechanism 10 is a rod-shaped crank 1012, and the second guide groove 1312 is a bar-shaped guide groove matched with the end protrusion of the rod-shaped crank 1012; the sector crank 1011 and the rod-shaped crank 1012 are fixedly connected to form a crank Combination 1010, the turntable 13 is alternately drivingly connected to the sector crank 1011 and the rod crank 1012 to drive the crank combination 1010 to rotate.

As shown in Figure 6, the sector crank 1011 includes a sector structure 10111 and a first fixed rod 10112 fixedly connected, and one end of the sector structure 10111 and the first fixed rod 10112 has a first connecting hole, and the other end of the first fixed rod 10112 has a The second connection hole; the fan-shaped structure 10111 is used to cooperate with the arc-shaped guide groove to rotate under the drive of the arc-shaped guide groove. One end of the first fixed rod 10112 is fixedly connected with the fan-shaped structure 10111 through the first pin shaft 104, and the other end is fixed through the first pin shaft 104. The second pin shaft 105 is hinged to the corresponding connecting rod 102 .

As shown in Figure 6, the rod-shaped crank 1012 includes a fixedly connected rod-shaped structure 10121 and a second fixed rod 10122, and one end of the rod-shaped structure 10121 and the second fixed rod 10122 has a third connection hole, and the second fixed rod 10122 The other end has a fourth connection hole; one end of the rod-shaped structure 10121 protrudes toward the turntable 13 for matching with the bar-shaped guide groove to rotate under the drive of the bar-shaped guide groove, and one end of the second fixed rod 10122 is connected to the first The pin shaft 104 is fixedly connected, and the other end is hinged to the corresponding connecting rod 102 through the second pin shaft 105 .

As shown in Figure 2, it is a schematic diagram of the state where the first guide groove 1311 of the turntable 13 is adapted to the sector crank 1011 to drive the crank assembly 1010 to rotate; It is a schematic diagram of the state of matching to drive the crank assembly 1010 to rotate.

The present application provides a lamination equipment, comprising: the above-mentioned lamination device; a plurality of feeding assemblies, and a plurality of feeding assemblies and a plurality of feeding mechanisms 4 are provided in one-to-one correspondence to feed the corresponding feeding mechanisms respectively. 4 feeding; the unloading mechanism 30 is arranged on one side of the rotating part 1, and is used for unloading the finished product of the lamination; the conveying line 40, the conveying line 40 is set correspondingly with the unloading mechanism 30, and is used for dispensing The finished product unloaded by the feeding mechanism 30 is transported to the next station.

Specifically, the multiple feeding assemblies include two pole piece positioning platforms 7, and the two pole piece positioning platforms 7 are respectively arranged corresponding to the first pole piece feeding mechanism 42 and the second pole piece feeding mechanism 44, so as to align the corresponding pole piece Positioning is performed for the movement of the first pole piece feeding mechanism 42 or the second pole piece feeding mechanism 44 .

The present application also provides a stacking method, which is suitable for the above-mentioned stacking device. The stacking method includes: rotating the rotating part 1 around its own axis and in a predetermined rotation direction; when each stacking platform 3 passes through each feeding mechanism in turn At 4 o'clock, the feeding mechanism 4 is made to feed the corresponding stacking platform 3 .

When the lamination process of each lamination table 3 is stacked to a predetermined number of layers, stop the feeding action to the corresponding lamination table 3; cut off the diaphragm at the corresponding lamination table 3, and make the corresponding lamination table 3 rotate Go to the unloading mechanism 30 to unload the finished product of lamination.

Taking the first stacking station 31 as an example, the stacking process of the stacking device of the present application is as follows:

As shown in Figure 7, when the stacking device starts to work, the first stacking platform 31 is located at a position corresponding to the first diaphragm feeding mechanism 41, and the diaphragm pulling assembly 48 of the first diaphragm feeding mechanism 41 stretches out to Pull the first diaphragm 2021 on the corresponding diaphragm feeding assembly 47 that has undergone unwinding, tension control, deviation correction, etc. Move to compress the first diaphragm 2021 on the first lamination stage 31, the diaphragm cutting assembly 6 between the first lamination stage 31 and the sixth lamination stage 36 will be located between the first lamination stage 31 and the sixth stack The first diaphragm 2021 between the sheet stages 36 is cut off, and the diaphragm pulling assembly 48 of the first diaphragm feeding mechanism 41 sends the cut first diaphragm 2021 to the waste collection place, and then retracts to wait for the next work.

As shown in Figure 8, after the rotating part 1 rotates 60 degrees, it pauses for a predetermined time, and the first stacking platform 31 is located at a position corresponding to the first pole piece feeding mechanism 42, and the first pole piece feeding mechanism 42 grabs the corresponding pole piece The first pole piece 2011 on the positioning platform 7 is moved to the first stacking platform 31, and one group of pressing knife parts 5 on the first stacking platform 31 moves to press the first pole piece 2011 on the first stack. On the sheet stage 31, a group of pressing knife parts 5 originally used to compress the first diaphragm 2021 return to the original position and wait for the next work; at the same time, the second lamination stage 32 performs the pressing action on the first diaphragm 2021.

As shown in Fig. 9, after the rotating part 1 rotates 60 degrees, it pauses for a predetermined time, the first stacking platform 31 is located at the position corresponding to the second diaphragm feeding mechanism 43, and the diaphragm pulling assembly 48 of the second diaphragm feeding mechanism 43 stretches out. out, so as to pull the second diaphragm 2022 on the corresponding diaphragm feeding assembly 47 to the first lamination table 31 after unwinding, tension control, deviation correction and other processes, and one group of presses on the first lamination table 31 The knife part 5 moves to press the second diaphragm 2022 on the first stacking platform 31, and a group of pressing knife parts 5 originally used to press the first pole piece 2011 returns to its original position and waits for the next work. The diaphragm cutting assembly 6 between the stage 31 and the sixth lamination stage 36 cuts off the second diaphragm 2022 between the first lamination stage 31 and the sixth lamination stage 36, and the diaphragm of the second diaphragm feeding mechanism 43 pulls The assembly 48 sends the severed second diaphragm 2022 to the waste collection place, and then retracts it to wait for the next work. At the same time, the pressing action of the first pole piece 2011 is carried out at the second stacking station 32 , and the pressing action of the first diaphragm 2021 is carried out at the third stacking station 33 .

As shown in FIG. 10 , after the rotating part 1 rotates 60 degrees, it pauses for a predetermined time, and the first stacking station 31 does not perform stacking action. At the same time, the pressing action of the second diaphragm 2022 is carried out at the second stacking station 32, the pressing action of the first pole piece 2011 is carried out at the third stacking station 33, and the pressing action of the first pole piece 2011 is carried out at the fourth stacking station 34. The pressing action of the diaphragm 2021.

As shown in Figure 11, after the rotating part 1 rotates 60 degrees, it pauses for a predetermined time, and the first stacking platform 31 is located at a position corresponding to the second pole piece feeding mechanism 44, and the second pole piece feeding mechanism 44 grabs the corresponding pole piece The second pole piece 2012 on the positioning platform 7 is moved to the first stacking platform 31, and one of the group of pressing knife parts 5 on the first stacking platform 31 moves to press the second pole piece 2012 on the first stack. On the sheet stage 31, a group of pressing knife parts 5 originally used to compress the second diaphragm 2022 return to their original positions and wait for the next work. At the same time, the lamination action is not performed at the second lamination stage 32, the compression action of the second diaphragm 2022 is performed at the third lamination stage 33, and the compression action of the first pole piece 2011 is performed at the fourth lamination stage 34. action, the fifth stacking station 35 performs a pressing action on the first diaphragm 2021 .

As shown in FIG. 12 , after the rotating part 1 rotates 60 degrees, it pauses for a predetermined time, and the first stacking station 31 does not perform stacking action. At the same time, the second lamination station 32 performs the pressing action on the second pole piece 2012, the third lamination station 33 does not perform the lamination action, and the fourth lamination station 34 performs the pressing action on the second diaphragm 2022 The pressing action of the first pole piece 2011 is carried out at the fifth stacking station 35 , and the pressing action of the first diaphragm 2021 is carried out at the sixth stacking station 36 .

As shown in Figure 13, after the rotating part 1 rotates 60 degrees, it pauses for a predetermined time, and the first stacking table 31 is located at a position corresponding to the first diaphragm feeding mechanism 41, and one group of pressing knives on the first stacking table 31 The component 5 moves to press the first diaphragm 2021 on the first stacking platform 31 , and a group of pressing knife components 5 originally used to press the second pole piece 2012 return to the original position and wait for the next work. Simultaneously, the lamination action is not performed at the second lamination station 32, the pressing action to the second pole piece 2012 is performed at the third lamination station 33, the lamination action is not performed at the fourth lamination station 34, and the fifth lamination The pressing action of the second diaphragm 2022 is carried out at the sheet stage 35 , and the pressing action of the first pole piece 2011 is carried out at the sixth stacking stage 36 .

As shown in Figure 14, after the rotating part 1 rotates 60 degrees, it pauses for a predetermined time, and the first stacking platform 31 is located at a position corresponding to the first pole piece feeding mechanism 42, and the first pole piece feeding mechanism 42 grabs the corresponding pole piece The first pole piece 2011 on the positioning platform 7 is moved to the first stacking platform 31, and one group of pressing knife parts 5 on the first stacking platform 31 moves to press the first pole piece 2011 on the first stack. On the sheet stage 31, a group of pressing knife parts 5 originally used to compress the first diaphragm 2021 return to their original positions and wait for the next work. Simultaneously, the second stacking station 32 and the sixth stacking station 36 place carry out the pressing action to the first pole piece 2011, the third stacking station 33 places do not carry out the lamination action, and the fourth stacking station 34 place carries out the pressing action. For the pressing action of the second pole piece 2012 , the lamination action is not performed at the fifth lamination station 35 , and the pressing action of the second diaphragm 2022 is performed at the sixth lamination station 36 .

As shown in FIG. 15 , the rotating part 1 rotates in a predetermined direction of rotation to sequentially stack the first stacking table 31 until the number of stacked layers required by the stacking process of the battery cell 20 is met. It is located on the first stacking table 31, the diaphragm cutting assembly 6 on both sides cuts off the diaphragms 202 on both sides of the stacked cell 20; the rotating part 1 continues to rotate. The feeding mechanism 30 moves the battery cells 20 on the first stacking table 31 to the conveying line 40 , and the rotating part 1 continues to rotate to continue stacking the first stacking table 31 .

From the above description, it can be seen that the above-mentioned embodiments of the present application have achieved the following technical effects:

The stacking device of the present application is provided with a rotating part 1 that is rotatable around its own axis and in a predetermined direction of rotation, and a plurality of stacking stages 3 are arranged on the rotating part 1 around the own axis of the rotating part 1, and a plurality of rotating parts are arranged. 1 spaced feeding mechanism 4, so that a plurality of feeding mechanisms 4 are arranged in sequence around the axis of the rotating part 1 and along a predetermined rotation direction. In this way, by turning the rotating part 1 so that a plurality of stacking stages 3 pass through each feeding mechanism 4 successively, each feeding mechanism 4 carries out feeding to the corresponding stacking stage 3, so that during the rotation of the rotating part 1 Multiple laminations are carried out on the corresponding lamination table 3, which reduces the process of the diaphragm going back and forth, ensures that the force direction of the diaphragm is consistent, and avoids the change of the internal porosity of the diaphragm caused by the discontinuous tension of the diaphragm back and forth. At the same time, the above-mentioned setting of the stacking device improves the consistency of the internal resistance of the battery, reduces the time spent on transporting the pole pieces, improves the efficiency of taking out the pole pieces, and realizes the continuity of the production of battery stacks, so that continuous The production of battery cells greatly improves the stacking efficiency of lithium battery cells, and solves the problem of low stacking efficiency of cell pole pieces of lithium ion batteries in the prior art.

The above are only preferred embodiments of the present application, and are not intended to limit the present application. For those skilled in the art, there may be various modifications and changes in the present application. Any modifications, equivalent replacements, improvements, etc. made within the spirit and principles of this application shall be included within the protection scope of this application.

Claims (16)

A stacking device is characterized in that it comprises: A rotating part (1), the rotating part (1) is rotatably arranged around its own axis and along a predetermined rotating direction, and a plurality of stacking stages (3) are arranged on the rotating part (1), and a plurality of stacking stages (3) are arranged on the rotating part (1). The chip stages (3) are arranged in sequence around the own axis of the rotating part (1); A plurality of feeding mechanisms (4), a plurality of the feeding mechanisms (4) and the rotating part (1) are arranged at intervals, a plurality of the feeding mechanisms (4) around the rotating part (1) itself axis and arranged in sequence along the predetermined rotation direction, so that by rotating the rotating part (1), a plurality of the lamination stages (3) pass through each of the feeding mechanisms (4) sequentially, so as to pass through each of the feeding mechanisms. The feeding mechanism (4) carries out feeding to the corresponding said stacking platform (3). Lamination device according to claim 1, characterized in that, The multiple feeding mechanisms (4) are divided into at least one group of feeding assemblies, and each group of feeding assemblies includes a first diaphragm feeding mechanism (41) sequentially arranged along the predetermined direction of rotation, a first pole piece material mechanism (42), the second diaphragm feeding mechanism (43) and the second pole piece feeding mechanism (44), so as to pass through the first diaphragm feeding mechanism (41), the first pole piece feeding mechanism (42 ), the second diaphragm feeding mechanism (43) and the second pole piece feeding mechanism (44) are sequentially fed to the corresponding lamination stage (3). The lamination device according to claim 1, characterized in that, the number of the lamination stations (3) is greater than or equal to the number of the feeding mechanisms (4). The stacking device according to claim 1, characterized in that, the rotating part (1) includes a plurality of pressing knife assemblies, and the plurality of pressing knife assemblies correspond to the plurality of stacking tables (3) one by one At least part of each said press knife assembly can be set movably to press the material on the corresponding lamination table (3). The lamination device according to claim 1, characterized in that, the rotating part (1) includes a diaphragm cutting assembly (6), and the diaphragm is arranged between any adjacent two lamination stages (3) A cutting assembly (6), at least part of the membrane cutting assembly (6) is movably arranged to cut the membrane (202) located between two adjacent stacking stages (3). The stacking device according to claim 1, characterized in that, the stacking device also includes a base (2), and the rotating part (1) includes: a rotating shaft (11), the rotating shaft (11) is rotatably arranged on the base (2) around its own axis; A runner (12), the runner (12) is sheathed on the rotating shaft (11) to rotate with the rotating shaft (11), and each of the stacking stages (3) is arranged on the rotating wheel (12) to rotate with the runner (12); A turntable (13), the turntable (13) is sheathed on the shaft (11) to rotate with the shaft (11), and the turntable (13) is driven by at least one feeding mechanism (4) Connect to drive the feeding mechanism (4) to move. The laminated device according to claim 6, characterized in that, a plurality of said feeding mechanisms (4) comprise a first pole piece feeding mechanism (42) and a second pole piece feeding mechanism (44), said turntable ( 13) Drive connection with both the first pole piece feeding mechanism (42) and the second pole piece feeding mechanism (44), so as to drive the first pole piece feeding mechanism (42) and the second pole piece feeding mechanism Material mechanism (44) motion. The stacking device according to claim 2 or 7, characterized in that, the stacking device also includes a base (2), the first pole piece feeding mechanism (42) and the second pole piece feeding mechanism ( 44) both include: A moving main body (45), the moving main body (45) is arranged on the base (2) and is movably arranged relative to the base (2), so that the feeding assembly and the stacking table (3) movement between The pole piece pick-and-place part (46), the pole piece pick-and-place part (46) is telescopically arranged on the moving body (45), to suck the pole piece from the feeding assembly or place the pole piece on the corresponding on the lamination table (3). The stacking device according to claim 1, characterized in that, the stacking device also includes a base (2), and a plurality of the feeding mechanisms (4) include a first pole piece feeding mechanism (42) and a second A pole piece feeding mechanism (44), the stacking device also includes a transmission assembly, the rotating part (1) is respectively connected to the first pole piece feeding mechanism (42) and the second pole piece through the transmission assembly The material mechanism (44) is connected, and at least a part of the first pole piece feeding mechanism (42) and the second pole piece feeding mechanism (44) are rotatably arranged relative to the base (2), and the first At least another part of the pole piece feeding mechanism (42) and the second pole piece feeding mechanism (44) is slidably arranged relative to the base (2), so as to be driven by the transmission assembly relative to the base (2) Exercise. Lamination device according to claim 9, characterized in that, The transmission assembly includes two groups of crank rocker mechanisms (10), and the two groups of crank rocker mechanisms (10) are connected with the first pole piece feeding mechanism (42) and the second pole piece feeding mechanism (44) respectively. ) corresponds to the setting; One end of each set of crank rocker mechanisms (10) is connected to the rotating part (1), and the other end of each set of crank rocker mechanisms (10) is connected to the first pole piece feeding mechanism (42) or The moving body (45) of the second pole piece feeding mechanism (44) is connected so that the rotating part (1) drives the corresponding moving body (45) to move through the crank rocker mechanism (10). The laminated device according to claim 10, characterized in that, the rotating part (1) includes a turntable (13), and each set of the crank-rocker mechanism (10) includes a crank (101), a connecting rod connected in sequence (102) and a rocker (103); the turntable (13) is drivingly connected to the crank (101) to drive the crank (101) to rotate; the rocker (103) is connected to the corresponding moving body (45) is connected to drive the moving body (45) to move. The laminated device according to claim 10, characterized in that, the moving body (45) comprises: a slider (451), the slider (451) is rotatably connected to the base (2); Guide rail (452), the guide rail (452) is slidingly fitted with the slider (451) and connected with the crank rocker mechanism (10), the guide rail (452) is in the crank rocker mechanism (10) Driven to move relative to the slider (451), to drive the slider (451) to rotate relative to the base (2). The laminated device according to claim 11, characterized in that each set of said crank rocker mechanism (10) comprises: a crank (101), the crank (101) is rotatably arranged on the base (2) around a predetermined axis; The rotating part (1) includes a turntable (13) for driving the crank rocker mechanism (10) to move, and the turntable (13) is provided with a guide groove (131) for cooperating with the crank (101) ), to drive the crank (101) to rotate through the turntable (13). The laminated device according to any one of claims 11 to 13, characterized in that, two sets of said crank rocker mechanisms (10) are connected by transmission, and said rotating part (1) is alternately connected with each set of The crank and rocker mechanisms (10) are drivingly connected to drive two groups of the crank and rocker mechanisms (10) to move synchronously. Lamination device according to claim 13, characterized in that, The number of the stacking tables (3) is multiple, and the plurality of guide grooves (131) are divided into multiple groups, and multiple groups of the guide grooves (131) are arranged around the axis of the turntable (13). A set of guide grooves (131) is provided in a one-to-one correspondence with a plurality of lamination stages (3); Each set of guide grooves (131) includes a first guide groove (1311) and a second guide groove (1312) respectively matched with the cranks (101) of the two groups of crank rocker mechanisms (10); The cranks (101) of the two groups of crank rocker mechanisms (10) are fixedly connected to form a crank combination (1010), and the crank combination (1010) is sequentially connected with each group of the cranks along the rotation direction of the turntable (13). The guide groove (131) is compatible. A lamination device, characterized in that it comprises: A lamination device as claimed in any one of claims 1 to 15; A plurality of feeding assemblies, the plurality of feeding assemblies are arranged in one-to-one correspondence with the plurality of feeding mechanisms (4), so as to supply materials to the corresponding feeding mechanisms (4) respectively; The unloading mechanism (30), which is arranged on one side of the rotating part (1), is used for unloading the finished product after lamination; A conveying line (40), the conveying line (40) is arranged correspondingly to the unloading mechanism (30), and is used to convey the finished product unloaded by the unloading mechanism (30) to the next station.

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