CN219832751U - Waterwheel type lithium ion battery lamination machine - Google Patents

Abstract

The utility model discloses a waterwheel type lithium ion battery lamination machine, which belongs to the technical field of lithium batteries and comprises a lamination table, wherein the lamination table can be lifted; a positive electrode release device for transmitting a positive electrode sheet; a negative electrode release device for transmitting a negative electrode sheet; a diaphragm release device that releases the diaphragm body to the lamination stage; the waterwheel device is provided with two groups which are respectively positioned at two sides of the lamination table; the waterwheel devices on two sides can rotate around the axle center of the waterwheel device, and the rotation directions of the two groups of waterwheel devices are opposite; the waterwheel device is provided with blades which rotate around the axis of the waterwheel device; the waterwheel device bears the cut pole piece through the blade, lays the pole piece on the diaphragm body, and smoothes the diaphragm body. According to the utility model, the traditional linear motion is replaced by rotation when the pole piece is obtained, and the diaphragm can be smoothed when the positive pole piece or the negative pole piece is placed on the blade, so that the pole piece does not need to be repositioned, and the lamination efficiency is greatly improved.

Description

Waterwheel type lithium ion battery lamination machine

Technical Field

The utility model relates to the technical field of battery lamination machines, in particular to a waterwheel type lithium ion battery lamination machine.

Background

The lithium ion battery is currently widely applied to 3C digital, new energy automobiles and energy storage industries, and the structure of a soft package battery core of the lithium ion battery comprises a lamination type structure and a winding type structure. In a common lamination structure, a positive plate, a diaphragm and a negative plate are formed by overlapping, wherein the diaphragm is broken, and the lamination structure of the structure is usually formed by cutting the diaphragm into thin slices slightly larger than the pole pieces and then overlapping the thin slices layer by layer.

In the production process of lithium ion batteries with laminated soft-package battery cells, the lamination process is a bottleneck of high productivity. Traditional Z-shaped lamination often adopts the manipulator to press from both sides in proper order to get positive and negative pole piece, realizes piling up through the left and right swing of diaphragm or folding platform, still need to reposition before the pole piece presss from both sides to get, and efficiency is lower, leads to earlier stage equipment to throw-in excessively, in view of this needs to optimize lamination machine structure.

Disclosure of Invention

1. Technical problem to be solved by the utility model

Aiming at the problems that a mechanical arm is adopted to clamp positive and negative pole pieces in sequence in the traditional Z-shaped lamination in the prior art, repositioning is needed before the pole pieces are clamped, and the efficiency is low, the utility model provides a waterwheel type lithium ion battery lamination machine, wherein a waterwheel device replaces a traditional mechanical arm, the traditional linear motion is replaced by rotation, and a diaphragm can be smoothed when the positive pole piece or the negative pole piece is placed on a blade, so that lamination is directly carried out, repositioning is not needed, and the lamination efficiency is greatly improved.

2. Technical proposal

In order to achieve the above purpose, the present utility model provides a waterwheel type lithium ion battery lamination machine, comprising a lamination table, a lifting mechanism and a lifting mechanism, wherein the lamination table is liftable; a positive electrode release device for transmitting a positive electrode sheet; a negative electrode release device for transmitting a negative electrode sheet; a diaphragm release device that releases the diaphragm body to the lamination stage; the waterwheel device is provided with two groups which are respectively positioned at two sides of the lamination table; the waterwheel devices on two sides can rotate around the axle center of the waterwheel device, and the rotation directions of the two groups of waterwheel devices are opposite; the waterwheel device is provided with blades which rotate around the axis of the waterwheel device; the waterwheel device bears the cut pole piece through the blade, lays the pole piece on the diaphragm body, and smoothes the diaphragm body.

Further, the waterwheel device comprises a rotating shaft, and a plurality of blades are arranged on the rotating shaft; the blade comprises a first section and a second section, the first section is connected with the rotating shaft, and the first sections are circumferentially arranged with the axis of the rotating shaft as the center; the second section is connected with the first section, and the included angle is 120-150 degrees.

Further, the second section is provided with vacuum chucks for adsorbing the positive electrode plate or the negative electrode plate, the center distance between the vacuum chucks is 10 mm-50 mm, and the number of the vacuum chucks is 6-20.

Further, a smoothing roller is connected to the free end of the second section and is used for smoothing the diaphragm body; the connecting end of the second section and the first section is controlled to rotate through a deflection motor so as to avoid the lamination table in the rotating process.

Further, the positive electrode release device comprises a positive electrode unreeling roller, a positive electrode deviation correcting device and a positive electrode tensioning roller, and the positive electrode coiled material is sequentially transmitted to the waterwheel device at the positive electrode side through the positive electrode unreeling roller, the positive electrode deviation correcting device and the positive electrode tensioning roller; the negative electrode release device comprises a negative electrode unreeling roller, a negative electrode deviation correcting device and a negative electrode tensioning roller, and the negative electrode coiled material is sequentially transmitted to the waterwheel device at the negative electrode side through the negative electrode unreeling roller, the negative electrode deviation correcting device and the negative electrode tensioning roller; the diaphragm release device comprises a diaphragm unreeling roller, a diaphragm deviation correcting device and a diaphragm tensioning roller, and the diaphragm body is sequentially transmitted to the lamination table through the diaphragm unreeling roller, the diaphragm deviation correcting device and the diaphragm tensioning roller.

Further, a pole piece forming device and a piece feeding device are arranged between each positive electrode release device and each negative electrode release device and the waterwheel device, the positive electrode coiled material or the negative electrode coiled material is processed into a positive electrode piece or a negative electrode piece through the pole piece forming device, and the positive electrode piece or the negative electrode piece is fed to the waterwheel device by the piece feeding device.

Further, a diaphragm cutting device is arranged between the diaphragm releasing device and the lamination table and used for cutting off the diaphragm body.

Further, the lamination table comprises a table top and supporting plates arranged on two sides of the table top, and two ends of the table top are in sliding connection with the supporting plates; the table top is connected with a lifting mechanism, and the lifting mechanism drives the table top to lift.

Further, the lifting mechanism comprises a screw rod, one end of the screw rod is connected with the servo motor, and the other end of the screw rod is in transmission connection with the table top through threads.

Further, the hot press forming device comprises a manipulator, a conveyor belt and a hot press platform, and the stacked cores from the lamination platform are conveyed to the hot press platform through the manipulator and the conveyor belt to be hot press formed.

3. Advantageous effects

Compared with the prior art, the technical scheme provided by the utility model has the following beneficial effects:

(1) According to the waterwheel type lithium ion battery lamination machine, the positive electrode plate is conveyed to the diaphragm of the lamination table and smoothed by the rotation of the blade of the waterwheel device on one side of the lamination table, then the diaphragm is lowered by a certain distance through the lamination table, the negative electrode plate is conveyed to the diaphragm of the lamination table and smoothed by the rotation of the blade of the waterwheel device on the other side of the lamination table, and the Z-shaped lamination is completed.

(2) According to the waterwheel type lithium ion battery lamination machine, the included angle between the second section and the first section of the blade is controlled to be 120-150 degrees, and the second section can smooth the diaphragm body at a better angle, so that the flatness of Z-shaped lamination of the diaphragm body is improved. The number of the second section vacuum sucking discs and the distance between the center distances can be selected according to pole pieces with different sizes, and the application range of the lamination machine can be increased.

(3) According to the waterwheel type lithium ion battery lamination machine, by arranging the deviation correcting device and the tensioning roller, the positive electrode coil stock, the negative electrode coil stock and the diaphragm body can be prevented from curling and shifting in the transmission process, the process stability of the lamination process is improved, and the lamination quality is guaranteed. The pole piece forming device can process coiled materials into pole pieces, and the pole pieces are conveyed to a specified position by the pole piece conveying device, so that the pole pieces are conveniently sucked by the waterwheel blade.

(4) According to the waterwheel type lithium ion battery lamination machine, the supporting plate can increase the stability of the table top, so that the lamination process is stable, and the lamination quality is ensured. The screw rod and the table top form a transmission mechanism, the table top can be lifted under the driving of the servo motor, and descending adjustment can be performed under the condition that the thickness of the lamination is increased, so that the smooth performance of the lamination work is ensured. The core forming device can convey the stacked cores discharged by the stacking table to the hot-pressing platform for hot-pressing shaping through the manipulator and the conveyor belt.

Drawings

In the drawings, the dimensions and proportions are not representative of the dimensions and proportions of an actual product. The figures are merely illustrative and certain unnecessary elements or features have been omitted for clarity.

FIG. 1 is a schematic view of a lamination machine in accordance with an embodiment of the utility model;

FIG. 2 is a schematic view of a stacked core according to an embodiment of the present utility model;

fig. 3 is a schematic view of the structure of a blade in an embodiment of the present utility model.

Reference numerals in the schematic drawings illustrate:

1. a lamination machine body; 11. a positive electrode release device; 111. an anode unreeling roller; 112. a positive electrode coil stock; 113. a positive electrode deviation correcting device; 114. a positive tension roller; 12. a first pole piece forming device; 121. a first rubber roll; 122. a first cutting blade; 13. a waterwheel device; 131. a rotating shaft; 132. a first section; 133. a second section; 1331. a vacuum chuck; 1332. a deflection motor; 134. smoothing roller; 14. a diaphragm release device; 141. a diaphragm unreeling roller; 142. a diaphragm body; 143. a diaphragm deviation correcting device; 144. a diaphragm tensioning roller; 15. a diaphragm cutting device; 151. a third cutting blade; 152. a driving roller; 16. a lamination stage; 161. a table top; 162. a support plate; 163. a screw rod; 164. a servo motor; 17. a core forming device; 171. a manipulator; 172. a conveyor belt; 173. a hot pressing platform; 18. a negative electrode release device; 181. a negative electrode unreeling roller; 182. a negative electrode coil stock; 183. a negative electrode deviation correcting device; 184. a negative tension roller; 19. a second pole piece forming device; 191. a second rubber roller; 192. a second cutting blade; 2. stacking the cores; 21. a positive plate; 22. a negative plate.

Detailed Description

For a further understanding of the present utility model, the present utility model will be described in detail with reference to the drawings and examples. What has been described herein is merely a preferred embodiment according to the present utility model, and other ways of implementing the utility model will occur to those skilled in the art on the basis of the preferred embodiment, and are within the scope of the utility model.

In the description of the present utility model, it should be noted that the terms "center," "middle," "upper," "lower," "left," "right," "inner," "outer," "top," "bottom," "side," "vertical," "horizontal," and the like indicate orientations or positional relationships based on the orientation or positional relationships shown in the drawings, merely to facilitate description of the present utility model and simplify the description, and do not indicate or imply that the apparatus or elements referred to must have a specific orientation, be configured and operated in a specific orientation, and thus should not be construed as limiting the present utility model. Furthermore, the terms "first," "second," and "third" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance.

Examples

Referring to fig. 1-3, the present embodiment provides a waterwheel type lithium ion battery lamination machine, which includes a lamination table 16 that can be lifted and lowered to adjust its height. A positive electrode release device 11 for transmitting the positive electrode sheet 21; a negative electrode release 18 for delivering a negative electrode sheet 22. A diaphragm release 14 that releases the diaphragm body 142 toward the lamination table 16. The waterwheel apparatus 13 is provided with two, two on both sides of the lamination stage 16. The waterwheel devices 13 on the two sides can rotate around the axes of the waterwheel devices and the rotation directions of the waterwheel devices are opposite. The blade is provided on the truck device 13 and is rotatable around its axis along with the truck device 13. The rotation directions of the blades of the both sides of the waterwheel apparatus 13 are also opposite, so that the Z-folding of the diaphragm body 142 can be completed. At the time of lamination, the rotation of the blade of the waterwheel apparatus 13 on the positive electrode side conveys the positive electrode sheet 21 onto the separator body 142 of the lamination stage 16 and smoothes the separator body 142. And then lowered through lamination station 16 a distance that is an increment of the thickness of the laminations. The rotation of the blades of the waterwheel apparatus 13 on the negative side conveys the negative electrode sheet 22 onto the diaphragm body 142 of the lamination stage 16 and smoothes the diaphragm body 142. This replaces the traditional mechanical arm with rotation by the waterwheel device 13, and the diaphragm body 142 can be smoothed by placing the positive plate 21 or the negative plate 22 on the blade, so that lamination can be directly performed without repositioning, and the efficiency of lamination is greatly improved.

In this embodiment, as shown in fig. 3, the waterwheel apparatus 13 includes a rotating shaft 131, and a plurality of blades are provided on the rotating shaft 131. The rotating shaft 131 is driven by a motor, and the rotating speed of the rotating shaft 131 is matched with the tabletting speed. The blade includes first section 132 and second section 133, and first section 132 is connected with pivot 131, and a plurality of first sections 132 use the axis of pivot 131 to arrange as central circumference, and when waterwheel device 13 rotated, a plurality of first sections 132 of circumference can increase the conveying efficiency of blade to the pole piece. The second segment 133 is connected with the first segment 132, and the contained angle is 120 ~ 150, and the second segment 133 can smooth the diaphragm body 142 with better angle, is favorable to improving the planarization of carrying out Z shape lamination to the diaphragm body 142.

It should be noted that, the blade needs to have a capability of gripping the pole piece as the conveying device of the pole piece, so the second section 133 is provided with a vacuum chuck 1331 for adsorbing the positive pole piece 21 or the negative pole piece 22. The center distance between the vacuum chucks 1331 is 10mm to 50mm, and the number of the vacuum chucks 1331 is 6 to 20. The center distance between the vacuum chucks 1331 and the number of the vacuum chucks 1331 can be selected according to pole pieces with different sizes, so that the application range of the lamination machine can be improved, and the universality of the lamination machine can be improved. Further, a smoothing roller 134 is connected to the free end of the second section 133, for smoothing the diaphragm body 142, completing the folding of the diaphragm body 142. The connection end of the second section 133 and the first section 132 is controlled to rotate through a deflection motor 1332 so as to avoid the lamination table 16 in the rotating process, avoid interference with the lamination table 16 and prevent damage caused by collision of blades.

In this embodiment, as shown in fig. 1, the positive electrode releasing device 11 includes a positive electrode unreeling roller 111, a positive electrode deviation correcting device 113 and a positive electrode tensioning roller 114, and the positive electrode coiled material 112 is sequentially transferred to the waterwheel device 13 on the positive electrode side through the three components; the negative electrode release device 18 comprises a negative electrode unreeling roller 181, a negative electrode deviation correcting device 183 and a negative electrode tensioning roller 184, and the negative electrode coiled material 182 is sequentially transmitted to the waterwheel device 13 at the negative electrode side through the negative electrode unreeling roller 181, the negative electrode deviation correcting device 183 and the negative electrode tensioning roller; the diaphragm releasing apparatus 14 includes a diaphragm unreeling roller 141, a diaphragm deviation rectifying apparatus 143, and a diaphragm tensioning roller 144, and the diaphragm body 142 is sequentially transferred to the lamination stage 16 through the three. By arranging the deviation correcting device and the tensioning roller, the positive electrode coil stock 112, the negative electrode coil stock 182 and the diaphragm body 142 can be ensured not to curl and deviate in the transmission process, the process stability of the lamination process is improved, and the lamination quality is ensured.

In this embodiment, as shown in fig. 1, a pole piece forming device and a piece feeding device are respectively arranged between the positive electrode releasing device 11 and the negative electrode releasing device 18 and the waterwheel device 13, the positive electrode coiled material 112 or the negative electrode coiled material 182 is processed into a positive electrode piece 21 or a negative electrode piece 22 by the pole piece forming device, and the positive electrode piece 21 or the negative electrode piece 22 is conveyed to the waterwheel device 13 by the piece feeding device. The pole piece forming device includes a first pole piece forming device 12 on the positive side and a second pole piece forming device 19 on the negative side. The first pole piece forming device 12 is mainly a first cutting knife 122, the first cutting knife 122 is provided with a negative pressure dust removing mechanism up and down, a counter is arranged in front of or behind the first cutting knife 122, the cut positive pole piece 21 is accurately conveyed to a designated position through a piece conveying device on the positive pole side and is adsorbed by a blade second section 133 of the waterwheel device 13, the piece conveying device on the positive pole side comprises an upper first rubber roller 121 and a lower first rubber roller 121, and the first rubber roller 121 is driven by a motor. Similarly, the second pole piece forming device 19 is mainly a second cutting blade 192, the second cutting blade 192 is provided with a negative pressure dust removing mechanism up and down, a counter is arranged in front of or behind the second cutting blade 192, the cut negative pole piece 22 is conveyed to a designated position through a piece feeding device on the negative pole side and is adsorbed by the second section 133 of the blade of the waterwheel device 13, the piece feeding device on the negative pole side comprises an upper second rubber roller 191 and a lower second rubber roller 191, and the second rubber roller 191 is driven by a motor. A diaphragm cutting device 15 is provided between the diaphragm releasing device 14 and the lamination table 16 for cutting the diaphragm body 142. The diaphragm cutting device 15 includes a third cutting blade 151 and a driving roller 152, the driving roller 152 being controlled by a motor.

In this embodiment, referring to fig. 1, the lamination table 16 includes a table top 161 and support plates 162 provided at both sides of the table top 161, and both ends of the table top 161 are slidably connected to the support plates 162. The support plate 162 can increase the stability of the table 161, which is beneficial to the lamination process stability and ensures the lamination quality. The table 161 is connected to a lifting mechanism, and the lifting mechanism drives the table 161 to lift. Specifically, the lifting mechanism comprises a screw rod 163, one end of the screw rod 163 is connected with a servo motor 164, and the other end of the screw rod 163 is in transmission connection with the table top 161 through threads. The screw rod 163 and the table 161 form a transmission mechanism, the table 161 can be lifted up and down under the drive of the servo motor 164, and the table 161 can be regulated in a descending manner under the condition that the thickness of the lamination is increased, so that the smooth operation of the lamination is ensured. It should be noted that, the rotation of the screw rod 163 precisely controls the table 161 to move up and down, and the table 161 slowly moves down during lamination, and the moving dimension is equal to the thickness increment of the lamination core 2, so as to ensure that the angle of the pole piece entering the pole piece is kept constant. When the diaphragm body 142 is cut, the table 161 automatically rises to the initial position.

Finally, when the number of lamination layers reaches a set value, the waterwheel device 13 on the positive electrode side rotates to enable the diaphragm body 142 to cover the uppermost negative electrode piece 22 and smooth, and then the third cutting knife 151 cuts the diaphragm body 142, and the laminated core 2 is blanked. In order to facilitate the blanking of the laminated core 2, the lamination machine body 1 further comprises a core forming device 17, specifically, the core forming device 17 mainly comprises a manipulator 171, a conveyor belt 172 and a hot press platform 173, and the laminated core 2 from the lamination platform 16 is conveyed to the hot press platform 173 through the manipulator 171 and the conveyor belt 172 to be subjected to hot press shaping.

Lamination process: the anode coil 112, the cathode coil 182 and the diaphragm body 142 are fed, the scroll is expanded, and the anode and cathode coils are subjected to a tab forming process;

the positive unreeling roller 111 rotates clockwise for unreeling, the negative unreeling roller 181 rotates counterclockwise for unreeling, and the diaphragm unreeling roller 141 rotates clockwise for unreeling;

the coiled materials of the positive electrode and the negative electrode reach a cutting station through respective deviation correcting rollers and tensioning rollers, and are cut into single pole pieces;

when the waterwheel device 13 rotates to a designated position, the cut pole piece is accurately absorbed by the second section 133 of the blade through the piece feeding device;

the waterwheel device 13 carries the pole pieces to a lamination position, and the smoothing roller 134 at the tail end of the second section 133 of the blade smoothes the diaphragm body 142, and simultaneously the diaphragm body 142 is synchronously unreeled;

when the blade reaches the designated position, the vacuum chuck 1331 on the second section 133 of the blade discharges vacuum, the pole piece falls on the diaphragm accurately, stacking of one layer of pole pieces is completed, and the lamination table 16 descends by the distance between one layer of pole pieces and one layer of diaphragm thickness;

sequentially stacking the diaphragm body 142, the negative electrode plate 22 and the positive electrode plate 21, wherein the uppermost layer is the diaphragm body 142; after lamination is completed, the diaphragm body 142 is cut, and simultaneously the lamination table 16 is lifted to the initial position, and the lamination core 2 is transferred to the hot press platform 173 for hot press shaping.

The utility model and its embodiments have been described above by way of illustration and not limitation, and the utility model is illustrated in the accompanying drawings and described in the drawings in which the actual structure is not limited thereto. Therefore, if one of ordinary skill in the art is informed by this disclosure, the structural mode and the embodiments similar to the technical scheme are not creatively designed without departing from the gist of the present utility model.

Claims (10)

1. The utility model provides a waterwheel formula lithium ion battery lamination machine which characterized in that includes

A lamination table (16) which can be lifted;

a positive electrode release device (11) for transmitting a positive electrode sheet (21);

a negative electrode release device (18) for transmitting a negative electrode sheet (22);

a diaphragm release device (14) that releases a diaphragm body (142) to the lamination station (16);

the waterwheel device (13) is provided with two groups which are respectively positioned at two sides of the lamination table (16); the waterwheel devices (13) on two sides can rotate around the axle center of the waterwheel devices, and the rotation directions of the two groups of waterwheel devices (13) are opposite; the water wheel device (13) is provided with blades which rotate around the axle center of the water wheel device (13);

the waterwheel device (13) loads the cut pole piece through the blade, lays the pole piece on the diaphragm body (142), and smoothes the diaphragm body (142).

2. A waterwheel type lithium ion battery lamination machine according to claim 1, characterized in that the waterwheel device (13) comprises a rotating shaft (131), and the blades are arranged in a plurality and on the rotating shaft (131); the blade comprises a first section (132) and a second section (133), wherein the first section (132) is connected with the rotating shaft (131), and a plurality of first sections (132) are circumferentially arranged with the axis of the rotating shaft (131) as the center; the second section (133) is connected with the first section (132) and has an included angle of 120-150 degrees.

3. The waterwheel type lithium ion battery lamination machine according to claim 2, wherein vacuum chucks (1331) are arranged on the second section (133) and used for adsorbing the positive electrode plate (21) or the negative electrode plate (22), the center distance between the vacuum chucks (1331) is 10 mm-50 mm, and the number of the vacuum chucks (1331) is 6-20.

4. A waterwheel lithium-ion battery lamination machine according to claim 3, characterized in that the free end of the second section (133) is connected with a smoothing roller (134) for smoothing the diaphragm body (142); the connecting end of the second section (133) and the first section (132) is controlled to rotate through a deflection motor (1332) so as to avoid the lamination table (16) in the rotating process.

5. The waterwheel type lithium ion battery lamination machine according to any one of claims 1 to 4, wherein the positive electrode release device (11) comprises a positive electrode unreeling roller (111), a positive electrode deviation correcting device (113) and a positive electrode tensioning roller (114), and the positive electrode coiled material (112) is sequentially transmitted to the waterwheel device (13) on the positive electrode side through the positive electrode unreeling roller, the positive electrode deviation correcting device and the positive electrode tensioning roller; the negative electrode release device (18) comprises a negative electrode unreeling roller (181), a negative electrode deviation correcting device (183) and a negative electrode tensioning roller (184), and the negative electrode coiled material (182) is sequentially transmitted to the waterwheel device (13) at the negative electrode side through the negative electrode unreeling roller, the negative electrode deviation correcting device and the negative electrode tensioning roller; the diaphragm release device (14) comprises a diaphragm unreeling roller (141), a diaphragm deviation correcting device (143) and a diaphragm tensioning roller (144), and the diaphragm body (142) is sequentially transmitted to the lamination table (16) through the diaphragm unreeling roller, the diaphragm deviation correcting device and the diaphragm tensioning roller.

6. The waterwheel type lithium ion battery lamination machine according to claim 5, wherein a pole piece forming device and a piece feeding device are arranged between the positive electrode release device (11) and the negative electrode release device (18) and the waterwheel device (13), the positive electrode coiled material (112) or the negative electrode coiled material (182) is processed into a positive electrode piece (21) or a negative electrode piece (22) through the pole piece forming device, and the piece feeding device is used for conveying the positive electrode piece (21) or the negative electrode piece (22) to the waterwheel device (13).

7. A waterwheel lithium ion battery lamination machine according to claim 5, characterized in that a diaphragm cutting device (15) is arranged between the diaphragm releasing device (14) and the lamination table (16) for cutting off the diaphragm body (142).

8. The waterwheel type lithium ion battery lamination machine according to claim 1, wherein the lamination table (16) comprises a table top (161) and support plates (162) arranged at two sides of the table top (161), and two ends of the table top (161) are in sliding connection with the support plates (162); the table top (161) is connected with a lifting mechanism, and the lifting mechanism drives the table top (161) to lift.

9. The waterwheel type lithium ion battery lamination machine according to claim 8, wherein the lifting mechanism comprises a screw rod (163), one end of the screw rod (163) is connected with a servo motor (164), and the other end of the screw rod is in transmission connection with the table top (161) through threads.

10. The waterwheel type lithium ion battery lamination machine according to claim 1, further comprising a core forming device (17), wherein the core forming device (17) comprises a manipulator (171), a conveyor belt (172) and a hot press platform (173), and the stacked cores (2) from the lamination platform (16) are conveyed to the hot press platform (173) through the manipulator (171) and the conveyor belt (172) for hot press shaping.