Laminating equipment capable of laminating multiple sheets at one time

Abstract

The invention discloses lamination equipment capable of laminating multiple pieces once, which comprises a rack, a positive plate die cutting device, a negative plate die cutting device, a lamination device, a diaphragm unwinding device and a diaphragm pulling device, wherein the positive plate die cutting device and the negative plate die cutting device are oppositely arranged front and back; the positive plate die cutting device comprises a positive plate unwinding mechanism, a positive plate V-angle punching mechanism, a positive plate cutting mechanism, a positive plate detection mechanism and a positive plate conveying line which are sequentially arranged at the top end of the rack from left to right; the negative pole piece die cutting device comprises a negative pole piece unwinding mechanism, a negative pole piece V-angle punching mechanism, a negative pole piece cutting mechanism, a negative pole piece detection mechanism and a negative pole piece conveying line which are sequentially arranged at the top end of the rack from left to right; the battery cell cutting machine further comprises a positive plate pre-positioning device, a negative plate pre-positioning device, a carrying device, a battery cell cutting device and a discharging manipulator. The production efficiency is improved, and the production cost is reduced.

Description

Technical Field

[0001] The invention relates to the technical field of battery production, and in particular to a laminating device for laminating multiple sheets at a time. Background Art

[0002] In the process of producing lithium battery cells, the existing stacking equipment generally follows the steps of: S1, firstly, the stacking equipment pulls the diaphragm unrolled by the diaphragm unwinding device to be laid on the stacking table; S2, then the diaphragm is cut by the diaphragm cutting device of the stacking equipment; S3, then the negative electrode sheet of the negative electrode sheet conveying line of the stacking equipment is moved to the diaphragm of the stacking table by the negative electrode sheet manipulator of the stacking equipment; S4, then the diaphragm unrolled by the diaphragm unwinding device is laid on the negative electrode sheet by the diaphragm pulling device, and then the diaphragm is cut by the diaphragm cutting device; S5, then the positive electrode sheet of the positive electrode sheet conveying line is moved to the diaphragm above the negative electrode sheet by the positive electrode sheet manipulator of the stacking equipment; S6, then the diaphragm unrolled by the diaphragm unwinding device is laid on the positive electrode sheet by the diaphragm pulling device; S7, the process of steps S2-S6 is repeated, and thus the battery cell can be obtained. This stacking equipment can only produce one single battery cell at a time, which reduces production efficiency and increases production costs. Summary of the invention

[0003] In order to overcome the deficiencies of the prior art, the present invention provides a laminating device for laminating multiple sheets at a time, thereby improving production efficiency and reducing production costs.

[0004] The technical solution adopted by the present invention to solve its technical problem is:

[0005] A laminating device for laminating multiple sheets at a time, comprising a frame, a positive electrode sheet die-cutting device, a negative electrode sheet die-cutting device arranged front and back opposite to the positive electrode sheet die-cutting device, a laminating device, a diaphragm unwinding device and a diaphragm pulling device, wherein the positive electrode sheet die-cutting device comprises a positive electrode sheet unwinding mechanism for unwinding a positive electrode sheet strip, a positive electrode sheet V-angle punching mechanism for V-angle punching on both sides of the positive electrode sheet strip, a positive electrode sheet cutting mechanism for cutting the positive electrode sheet strip into positive electrode sheets, a positive electrode sheet detection mechanism for size detection and surface defect detection of the positive electrode sheet, and a positive electrode sheet conveying line for conveying the positive electrode sheet, wherein the negative ... V-angle punching mechanism for V-angle punching on both sides of the positive electrode sheet strip, a positive electrode sheet V-angle punching mechanism for V-angle punching on both sides of the positive electrode sheet strip, a positive electrode The negative electrode sheet unwinding mechanism at the top of the rack is used to unwind the negative electrode sheet material strip, the negative electrode sheet V-angle punching mechanism is used to perform V-angle punching on both sides of the negative electrode sheet material strip, the negative electrode sheet cutting mechanism is used to cut the negative electrode sheet material strip into negative electrode sheets, the negative electrode sheet detection mechanism is used to perform size detection and surface defect detection on the negative electrode sheet, and the negative electrode sheet conveying line is used to convey the negative electrode sheet. The stacking device includes a stacking table, the diaphragm unwinding device is used to unwind the diaphragm, the diaphragm pulling device is used to clamp the diaphragm and drive the diaphragm to move backward, so as to lay the diaphragm on the stacking table, lay the diaphragm on multiple negative electrode sheets on the stacking table, and lay the diaphragm on multiple positive electrode sheets on the stacking table, the diaphragm unwinding device and the diaphragm pulling device are used to clamp the diaphragm and drive the diaphragm to move backward, so as to lay the diaphragm on the stacking table, lay the diaphragm on multiple negative electrode sheets on the stacking table, and lay the diaphragm on multiple positive electrode sheets on the stacking table. The membrane devices are all located in front of the stacking device and above the stacking device, and also include: a positive electrode sheet pre-positioning device, which is slidably arranged at the top of the frame, and is used to correct and position multiple positive electrode sheets; a negative electrode sheet pre-positioning device, which is slidably arranged at the top of the frame and is arranged front and back relative to the positive electrode sheet pre-positioning device, and is used to correct and position multiple negative electrode sheets, and the stacking device is located between the positive electrode sheet pre-positioning device and the negative electrode sheet pre-positioning device; a transport device is arranged at the top of the frame and is located between the positive electrode sheet conveying line and the negative electrode sheet conveying line, and is used to transport the multiple positive electrode sheets on the positive electrode sheet conveying line to the positive electrode sheet pre-positioning device, and to transport the multiple positive electrode sheets on the negative electrode sheet conveying line a negative electrode sheet is transported to the negative electrode sheet pre-positioning device, a plurality of positive electrode sheets on the positive electrode sheet pre-positioning device are transported to the diaphragm of the stacking table, and a plurality of negative electrode sheets on the negative electrode sheet pre-positioning device are transported to the diaphragm of the stacking table, the stacking device, the positive electrode sheet pre-positioning device and the negative electrode sheet pre-positioning device are all located in the transporting device; a cell cutting device is arranged at the top of the frame and is located to the right of the stacking device and the positive electrode sheet pre-positioning device, and is used to cut the whole cell into a plurality of single cells; a material unloading robot is arranged at the top of the frame and is located between the stacking device and the cell cutting device, and is used to transport the whole cell on the stacking table to the cell cutting device;The lamination device further comprises a lamination translation linear module arranged at the top of the frame, a lamination mounting plate arranged at the top of the lamination translation linear module, and a first hot cutting mechanism arranged at the top of the lamination mounting plate, the lamination platform is arranged at the top of the lamination mounting plate, the first hot cutting mechanism is located in front of the lamination platform, and the first hot cutting mechanism is used to cut off the diaphragm. ;

[0006] The beneficial effects of the present invention are as follows: the present invention can produce multiple single battery cells at one time by arranging the positive electrode sheet unwinding mechanism, the positive electrode sheet V-angle punching mechanism, the positive electrode sheet cutting mechanism, the positive electrode sheet detection mechanism, the positive electrode sheet conveying line, the negative electrode sheet unwinding mechanism, the negative electrode sheet V-angle punching mechanism, the negative electrode sheet cutting mechanism, the negative electrode sheet detection mechanism, the negative electrode sheet conveying line, the diaphragm unwinding device, the diaphragm pulling device, the laminating device, the positive electrode sheet pre-positioning device, the negative electrode sheet pre-positioning device, the conveying device, the battery cell cutting device and the unloading robot, thereby improving the production efficiency and reducing the production cost. BRIEF DESCRIPTION OF THE DRAWINGS

[0007] The present invention is further described below in conjunction with the accompanying drawings and embodiments.

[0008] Figure 1 It is a top view schematic diagram of a laminating device for laminating multiple sheets at a time provided by one embodiment of the present invention;

[0009] Figure 2 yes Figure 1 A schematic structural diagram of a V-angle punching mechanism for a positive electrode sheet of a lamination device shown;

[0010] Figure 3 yes Figure 2 A schematic diagram of the structure of the punching and lifting drive mechanism of the positive electrode sheet V-angle punching mechanism shown;

[0011] Figure 4 yes Figure 1 A schematic structural diagram of a lamination device of the lamination equipment shown;

[0012] Figure 5 yes Figure 4 An exploded schematic diagram of the lamination device shown;

[0013] Figure 6 yes Figure 4 The schematic diagram of the structure of the lamination platform of the lamination device shown in the figure with the lamination base removed;

[0014] Figure 7 yes Figure 4 A schematic structural diagram of a lamination platform, a first hot cutting mechanism, and a second hot cutting mechanism of the lamination device shown;

[0015] Figure 8 yes Figure 1 A schematic structural diagram of a positive electrode sheet pre-positioning device of the stacking equipment shown;

[0016] Fig. 9 yes Figure 1 A schematic diagram of the structure of a handling device of the stacking device shown;

[0017] Fig.10 yes Fig. 9 A schematic diagram of the structure of the negative electrode sheet outer suction cup manipulator of the handling device shown;

[0018] Fig.11 yes Fig. 9 A schematic diagram of the structure of the negative electrode sheet suction cup manipulator of the handling device shown;

[0019] Fig.12 yes Figure 1 A schematic structural diagram of a cell cutting device of the stacking equipment shown;

[0020] Fig.13 yes Fig.12 A schematic diagram of the structure of a slitting fixture of a cell slitting device shown;

[0021] Fig.14 yes Fig.12 A schematic structural diagram of a cutting mechanism of a cell cutting device shown;

[0022] Fig.15 yes Fig.14 An exploded schematic diagram of the slitting mechanism shown;

[0023] Fig.16 yes Figure 1 A schematic diagram of the structure of a material unloading robot for a lamination device shown;

[0024] Fig.17 yes Fig.16 The shown structure diagram of the unloading robot is after removing the unloading base, unloading translation linear module, and unloading lifting linear module. DETAILED DESCRIPTION

[0025] The following will clearly and completely describe the concept, specific structure and technical effects of the present invention in combination with the embodiments and drawings, so as to fully understand the purpose, characteristics and effects of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of them. Based on the embodiments of the present invention, other embodiments obtained by technicians in this field without creative work are all within the scope of protection of the present invention. In addition, all the connection / connection relationships involved in the patent do not refer to the direct connection of components, but refer to the formation of a better connection structure by adding or reducing connection accessories according to the specific implementation situation. The various technical features in the invention can be combined interchangeably without conflicting with each other.

[0026] Please refer to Figure 1An embodiment of the present invention provides a lamination device for stacking multiple sheets at a time, including a frame, a positive electrode sheet die-cutting device 10, a negative electrode sheet die-cutting device 20 arranged front and back relative to the positive electrode sheet die-cutting device 10, a lamination device 30, a diaphragm unwinding device 40, a diaphragm pulling device 50, a positive electrode sheet pre-positioning device 60a, a negative electrode sheet pre-positioning device 60b, a conveying device 70, a battery cell cutting device 80 and a material unloading robot 90.

[0027] The positive electrode sheet die-cutting device 10 includes a positive electrode sheet unwinding mechanism 11 for unwinding the positive electrode sheet strip, a positive electrode sheet V-angle punching mechanism 12 for performing V-angle punching on both sides of the positive electrode sheet strip, a positive electrode sheet cutting mechanism 13 for cutting the positive electrode sheet strip into positive electrode sheets, a positive electrode sheet detection mechanism 14 for performing size detection and surface defect detection on the positive electrode sheets, and a positive electrode sheet conveying line 15 for conveying positive electrode sheets. The negative electrode sheet die-cutting device 20 includes a negative electrode sheet unwinding mechanism 21 for unwinding the negative electrode sheet strip, a negative electrode sheet V-angle punching mechanism 22 for V-angle punching on both sides of the negative electrode sheet strip, a negative electrode sheet cutting mechanism 23 for cutting the negative electrode sheet strip into negative electrode sheets, a negative electrode sheet detection mechanism 24 for size detection and surface defect detection of the negative electrode sheet, and a negative electrode sheet conveying line 25 for conveying the negative electrode sheet. The stacking device 30 includes a stacking translation linear module (not shown in the figure) arranged at the top of the frame, a stacking mounting plate (not shown in the figure) arranged at the top of the stacking translation linear module, and a stacking table 31 arranged at the top of the stacking mounting plate. The stacking translation linear module is used to drive the stacking mounting plate to move left and right, thereby driving the stacking table 31 to move left and right. The diaphragm unwinding device 40 is used to unwind the diaphragm. The diaphragm pulling device 50 is used to clamp the diaphragm and drive the diaphragm to move backward, so as to lay the diaphragm on the stacking platform 31, lay the diaphragm on the multiple negative electrode sheets of the stacking platform 31, and lay the diaphragm on the multiple positive electrode sheets of the stacking platform 31. The positive electrode sheet pre-positioning device 60a is slidably arranged at the top of the frame, and is used to correct the deviation and position the multiple positive electrode sheets. The negative electrode sheet pre-positioning device 60b is slidably arranged at the top of the frame and is arranged front and back relative to the positive electrode sheet pre-positioning device 60a, and the negative electrode sheet pre-positioning device 60b is used to correct the deviation and position the multiple negative electrode sheets. The stacking device 30 is located between the positive electrode sheet pre-positioning device 60a and the negative electrode sheet pre-positioning device 60b. The transport device 70 is arranged at the top of the frame and is located between the positive electrode sheet conveyor line 15 and the negative electrode sheet conveyor line 25. It is used to transport multiple positive electrode sheets on the positive electrode sheet conveyor line 15 to the positive electrode sheet pre-positioning device 60a, to transport multiple negative electrode sheets on the negative electrode sheet conveyor line 25 to the negative electrode sheet pre-positioning device 60b, to transport multiple positive electrode sheets on the positive electrode sheet pre-positioning device 60a to the diaphragm of the stacking table 31, and to transport multiple negative electrode sheets on the negative electrode sheet pre-positioning device 60b to the diaphragm of the stacking table 31. The stacking device 30, the positive electrode sheet pre-positioning device 60a, and the negative electrode sheet pre-positioning device 60b are all located in the transport device 70. The diaphragm unwinding device 40 is arranged at the top of the conveying device 70, and the diaphragm pulling device 50 is arranged in the conveying device 70. The conveying device 70 is used to drive the diaphragm pulling device 50 to move forward and backward. The diaphragm unwinding device 40 and the diaphragm pulling device 50 are both located in front of the stacking device 30 and above the stacking device 30.The cell cutting device 80 is arranged at the top of the frame and is located to the right of the stacking device 30 and the positive electrode pre-positioning device 60a, and is used to cut the whole cell into multiple single cells. The unloading robot 90 is arranged at the top of the frame and is located between the stacking device 30 and the cell cutting device 80, and is used to transport the whole cell on the stacking table 31 to the cell cutting device 80.

[0028] The positive electrode sheet unwinding mechanism 11, the positive electrode sheet cutting mechanism 13, the positive electrode sheet detection mechanism 14, the positive electrode sheet conveying line 15, the negative electrode sheet unwinding mechanism 21, the negative electrode sheet cutting mechanism 23, the negative electrode sheet detection mechanism 24, the negative electrode sheet conveying line 25, the diaphragm unwinding device 40 and the diaphragm pulling device 50 are all existing structures and will not be repeated here.

[0029] Combination Figure 2 and Figure 3As shown, the positive electrode sheet V-angle punching mechanism 12 and the negative electrode sheet V-angle punching mechanism 22 both include a punching mounting frame 121 arranged at the top of the frame, a punching die located in the punching mounting frame 121, and a punching lifting drive mechanism. The punching die includes an upper punching template 122 and a lower punching template 123 which are arranged opposite to each other up and down. The lower punching template 123 is arranged at the bottom of the punching mounting frame 121, and the four corners of the lower punching template 123 are connected to the four corners of the upper punching template 122 through a telescopic rod 1221. Two V-shaped cutters are respectively arranged at the front and rear sides of the bottom of the upper punching template 122, and two V-shaped grooves corresponding to the two V-shaped cutters are respectively arranged at the top of the lower punching template 123, and the two V-shaped cutters are respectively used to cooperate with the two V-shaped grooves. The punching lifting drive mechanism includes a punching motor 1241, a punching reducer 1242, a punching synchronous belt assembly, a punching shaft 127, and a punching connecting rod 129. A punching mounting seat 126 is provided at the top of the punching mounting frame 121, and a punching motor 1241 is arranged on a punching reducer 1242. The output end of the punching motor 1241 is connected to the input end of the punching reducer 1242. The punching reducer 1242 is located behind the punching mounting seat 126 and is arranged at one end of the punching mounting seat 126. The punching synchronous belt assembly is located on the right side of the punching mounting seat 126. The punching mounting seat 126 is provided with through holes penetrating through both sides thereof, one end of the punching shaft 127 is connected to the output end of the punching reducer 1242 through the punching synchronous belt assembly, and the other end of the punching shaft 127 is rotatably arranged in the through hole of the punching mounting frame 126 through the punching bearing and is connected to a roller bearing follower 128, which is located on the left side of the punching mounting seat 126, and the center of the roller bearing follower 128 is located on one side of the axis of the punching shaft 127, that is, the roller bearing follower 128 is eccentrically arranged relative to the punching shaft 127. The roller bearing follower 128 is matched with the rectangular hole 12621 of the punching connecting plate 1262. A punching mounting plate 1261 is slidably provided on one side of the punching mounting seat 126, and the punching mounting plate 1261 is located on the left side of the punching mounting seat 126. The punching connecting plate 1262 is arranged on the side of the punching mounting plate 1261 close to the punching mounting seat 126. One end of the punching connecting rod 129 is arranged at the bottom end of the punching mounting plate 1261, and the other end of the punching connecting rod 129 passes through the through hole 1211 at the top of the punching mounting frame 121 and is connected to the top of the punching upper template 122 through the punching block 1291.

[0030] The punching synchronous belt assembly includes a punching driving wheel 1251, a punching driven wheel 1252 and a punching synchronous belt 1253 sleeved on the periphery of the punching driving wheel 1251 and the punching driven wheel 1252. The punching driving wheel 1251 is sleeved on the periphery of the output end of the punching reducer 1242, and the punching driven wheel 1252 is sleeved on the periphery of one end of the punching shaft 127. The punching motor 1241 is used to drive the punching active wheel 1251 to rotate through the punching reducer 1242. Under the action of the punching driven wheel 1252 and the punching synchronous belt 1253, the punching shaft 127 can be driven to rotate, and then the roller bearing follower 128 can be driven to rotate. The rotation of the roller bearing follower 128 can drive the punching connecting plate 1262 and the punching mounting plate 1261 to move up and down relative to the punching mounting seat 126, thereby driving the punching connecting rod 129 to move up and down, and then driving the punching upper template 122 and the two V-shaped cutters to move up and down.

[0031] In actual application, the positive electrode sheet material strip can be unwound by the positive electrode sheet unwinding mechanism 11, and the unwound positive electrode sheet material strip can pass between the punching upper template 122 and the punching lower template 123 of the positive electrode sheet V-angle punching mechanism 12, and the punching motor 1241 of the positive electrode sheet V-angle punching mechanism 12 drives the punching upper template 122 and the two V-shaped cutters to move downward at regular intervals, so that the two V-shaped cutters can perform V-angle punching on both sides of the positive electrode sheet material strip respectively, and then the positive electrode sheet material strip enters the positive electrode sheet. In the electrode sheet cutting mechanism 13, the positive electrode sheet strip can be cut into positive electrode sheets by the positive electrode sheet cutting mechanism 13, and then the positive electrode sheets enter the positive electrode sheet detection mechanism 14, and the positive electrode sheet detection mechanism 14 can perform size detection and surface defect detection on the positive electrode sheets. Unqualified positive electrode sheets are removed into the positive electrode sheet NG material box by the positive electrode sheet detection mechanism 14, and qualified positive electrode sheets are transported to the positive electrode sheet conveying line 15 by the positive electrode sheet detection mechanism 14, and then the positive electrode sheets can be transported by the positive electrode sheet conveying line 15. At the same time, the negative electrode sheet material strip is unwound by the negative electrode sheet unwinding mechanism 21, and the unwound negative electrode sheet material strip can pass between the punching upper template 122 and the punching lower template 123 of the negative electrode sheet V-angle punching mechanism 22, and the punching motor 1241 of the negative electrode sheet V-angle punching mechanism 22 drives the punching upper template 122 and the two V-shaped cutters to move downward at regular intervals, so that the two V-shaped cutters can perform V-angle punching on both sides of the negative electrode sheet material strip respectively, and then the negative electrode sheet material strip enters the negative electrode sheet In the cutting mechanism 23, the negative electrode sheet strip can be cut into negative electrode sheets by the negative electrode sheet cutting mechanism 23, and then the negative electrode sheets enter the negative electrode sheet detection mechanism 24, and the negative electrode sheets can be subjected to size detection and surface defect detection by the negative electrode sheet detection mechanism 24. Unqualified negative electrode sheets are removed into the negative electrode sheet NG material box by the negative electrode sheet detection mechanism 24, and qualified negative electrode sheets are transported to the negative electrode sheet conveying line 25 by the negative electrode sheet detection mechanism 24, and then the negative electrode sheet conveying line 25 can transport negative and positive electrode sheets.

[0032] Combination Figures 4 to 7 As shown, the stacking platform 31 includes a stacking base 311 arranged at the top of the stacking mounting plate, two stacking support plates 312 arranged side by side in front and back, a stacking bottom plate 313 and two finishing components. The two stacking support plates 312 are connected to each other. The bottom end of the stacking support plate 312 is provided with two stacking support plates 314 arranged in a front-to-back interval, and the two stacking support plates 314 are both arranged at the top of the stacking bottom plate 313. The bottom end of the stacking bottom plate 313 is provided with two stacking connecting plates 315, and the two stacking connecting plates 315 are connected to the stacking connecting columns at the top of the stacking base 311. The stacking support plate 312 is provided with a plurality of through holes running through the top and bottom ends thereof, and the plurality of through holes are arranged in sequence from left to right at intervals, and the plurality of through holes correspond to the plurality of lower clamping jaws 982 of the unloading manipulator 90 respectively.

[0033] The two finishing components correspond to the two stacking support plates 312 respectively. The finishing components include a plurality of finishing blocks 316, a finishing mounting plate 317 and two finishing cylinders 318. The plurality of finishing blocks 316 correspond one-to-one to the plurality of through holes of the corresponding stacking support plates 312. The finishing blocks 317 cooperate with the corresponding through holes. In the process of stacking, the finishing blocks 317 cooperate with the corresponding through holes. In this way, the diaphragm, the negative electrode sheet and the positive electrode sheet can be supported together by the finishing blocks 317 and the stacking support plates 312, and the stability is good. The top of the stacking support plate 314 is provided with a plurality of avoidance grooves 3141 corresponding to the plurality of through holes respectively. The plurality of avoidance grooves 3141 are respectively connected to the corresponding through holes, and the avoidance grooves 3141 play an avoidance role for the downward movement of the corresponding finishing blocks 317. The finishing installation plate 317 is located between the two stacking support plates 314 of the corresponding stacking support plate 312 and between the stacking bottom plate 3313 and the corresponding stacking support plate 312. The bottom ends of the multiple finishing blocks 316 are respectively connected to the top ends of the finishing installation plate 317. Two finishing cylinders 318 are respectively arranged at the bottom ends of the stacking bottom plate 313. The output ends of the finishing cylinders 318 pass through the through holes of the stacking bottom plate 313 and are connected to the bottom ends of the finishing installation plate 317. The two finishing cylinders 318 are used to drive the finishing installation plate 317 to move up and down, thereby driving the multiple finishing blocks 316 to move up and down. Through the downward movement of the multiple finishing blocks 316, the multiple finishing blocks 316 can be separated from the corresponding through holes. At this time, the multiple lower clamping jaws 982 of the unloading robot 90 can be respectively inserted into the multiple through holes of the two stacking support plates 312.

[0034] The lamination device 30 further includes two first pressing knife mechanisms 35 and two second pressing knife mechanisms 36 arranged at the top of the lamination mounting plate. The left and right movement of the lamination mounting plate can drive the two first pressing knife mechanisms 35 and the two second pressing knife mechanisms 36 to move left and right. The two first pressing knife mechanisms 35 are arranged opposite to each other left and right, and the two second pressing knife mechanisms 36 are arranged opposite to each other left and right. The second pressing knife mechanism 36 located on the left corresponds to the first pressing knife mechanism 35 located on the left, and the second pressing knife mechanism 36 located on the right corresponds to the first pressing knife mechanism 35 located on the right. The two second pressing knife mechanisms 36 are respectively used to press the two sides of the diaphragm on the lamination platform 31, and the two first pressing knife mechanisms 35 are respectively used to press the end of the first negative electrode sheet away from the center of the lamination platform 31 and the end of the last negative electrode sheet away from the center of the lamination platform 31, and are respectively used to press the end of the first positive electrode sheet away from the center of the lamination platform 31 and the end of the last positive electrode sheet away from the center of the lamination platform 31.

[0035] The first knife pressing mechanism 35 includes a first knife pressing seat 351 arranged at the top of the lamination mounting plate, a first left-right moving assembly arranged on the first knife pressing seat 351, a first knife pressing base 352 slidably arranged at the top of the first knife pressing seat 351, a plurality of first knife pressing cylinders 353 and a plurality of first knife pressing knives 358 arranged at the top of the first knife pressing base 352. In this embodiment, there are four first knife pressing cylinders 353, and the number of first knife pressing knives 358 corresponds to the number of first knife pressing cylinders 353. The first knife pressing seat 351 is located below the lamination bottom plate 313, and the lamination base 311 is located between the first knife pressing seats 351 of the two first knife pressing mechanisms 35. The plurality of first knife pressing cylinders 353 are sequentially arranged at intervals at the top of the first knife pressing base 352 from front to back, and the two lamination supporting plates 312 are located between the plurality of first knife pressing cylinders 353 of the two first knife pressing mechanisms 35. The plurality of first knife presses 358 correspond to the plurality of first knife press cylinders 353 and are respectively arranged at the top of the corresponding first knife press cylinders 353, and the first knife presses 358 are located above the lamination table 31. The first left-right moving assembly adopts a structure of a motor + screw nut + synchronous belt structure, and the first left-right moving assembly is used to drive the first knife press base 352, the plurality of first knife press cylinders 353 and the plurality of first knife presses 358 to move left and right, and the first knife press cylinders 353 are used to drive the corresponding first knife presses 358 to move up and down.

[0036] The second knife pressing mechanism 36 comprises a second knife pressing seat 361 arranged at the top of the lamination mounting plate, a second left-right moving assembly arranged on the second knife pressing seat 361, a second knife pressing base 362, a plurality of second knife pressing cylinders 363 and a plurality of second knife pressing knives 368. The number of the second knife pressing cylinders 363 and the second knife pressing knives 368 corresponds to the number of the first knife pressing cylinders 353, and is also four respectively. The first knife pressing seat 351 of the first knife pressing mechanism 35 is located between the second knife pressing seat 361 of the corresponding second knife pressing mechanism 36 and the lamination base 311. The plurality of second knife pressing cylinders 363 are sequentially arranged at intervals at the top of the second knife pressing base 362 from front to back, and each second knife pressing cylinder 363 is respectively located between two adjacent first knife pressing cylinders 353 of the corresponding first knife pressing mechanism 35. The plurality of second knife pressing knives 368 correspond to the plurality of second knife pressing cylinders 363 and are respectively arranged at the top of the corresponding second knife pressing cylinders 363, and each second knife pressing knives 368 is respectively located between two adjacent first knife pressing knives 358. The structure of the second left-right moving assembly is the same as that of the first left-right moving assembly. The second left-right moving assembly is used to drive the second knife pressing base 362, a plurality of second knife pressing cylinders 363, and a plurality of second knife pressing knives 368 to move left and right, and the second knife pressing cylinders 363 are used to drive the corresponding second knife pressing knives 368 to move up and down.

[0037] The lamination device 30 also includes a first hot cutting mechanism 38 and a second hot cutting mechanism 39 arranged at the top of the lamination mounting plate. The left and right movement of the lamination mounting plate can drive the first hot cutting mechanism 38 and the second hot cutting mechanism 39 to move left and right. The first hot cutting mechanism 38 and the second hot cutting mechanism 39 are arranged front and back relative to each other, the first hot cutting mechanism 38 is located in front of the lamination table 31, and the second hot cutting mechanism 39 is located behind the lamination table 31. The first hot cutting mechanism 38 is used to cut the diaphragm and to seal the front side of the whole battery cell, and the second hot cutting mechanism 39 is used to seal the back side of the whole battery cell. The first hot cutting mechanism 38 and the second hot cutting mechanism 39 each include two hot cutting bases 38a arranged left and right, two hot cutting mounting plates 381 arranged left and right, two hot cutting support plates 382 arranged left and right, two hot cutting lifting cylinders 383, a diaphragm hot cutting wire 384 and a hot cutting tensioning cylinder 387. Both hot cutting bases 38a are arranged at the top of the lamination mounting plate. Two hot cutting mounting plates 381 are respectively arranged at the top of two hot cutting bases 38a, and two hot cutting support plates 382 are respectively slidably arranged at one side of the two hot cutting mounting plates 381 close to the laminating platform 31, and the two hot cutting support plates 382 are respectively protruded from one end of the two hot cutting mounting plates 381 close to the center of the laminating platform 31. Two hot cutting lifting cylinders 383 are respectively arranged at one side of the two hot cutting mounting plates 381 close to the laminating platform 31, and the output ends of the two hot cutting lifting cylinders 383 are respectively connected to the top of the two hot cutting support plates 382, ​​and the two hot cutting lifting cylinders 383 are respectively used to drive the two hot cutting support plates 382 to move up and down. The diaphragm hot cutting wire 384 is located below the top of the laminating platform 31, and one end of the diaphragm hot cutting wire 384 is provided with a first hot cutting block 385, and the other end of the diaphragm hot cutting wire 384 is provided with a second hot cutting block 386. The laminating platform 31 is located between the first hot cutting block 385 and the second hot cutting block 386. The first hot cutting block 385 is arranged on one side of the hot cutting support plate 382 close to the lamination table 31 through the hot cutting adapter plate 3821, and the second hot cutting block 386 is connected to the output end of the hot cutting tensioning cylinder 387. The hot cutting tensioning cylinder 387 is arranged on the side of the other hot cutting support plate 382 close to the lamination table 31, and the hot cutting tensioning cylinder 387 is used to drive the second hot cutting block 386 to move left and right. The up and down movement of the two hot cutting support plates 382 can drive the hot cutting adapter plate 3821, the first hot cutting block 385, the second hot cutting block 386, the hot cutting tensioning cylinder 387 and the diaphragm hot cutting wire 384 to move up and down. One end and the other end of the diaphragm hot cutting wire 384 are respectively used to be electrically connected to the control system, so that the control system can realize the power supply to the diaphragm hot cutting wire 384, and the diaphragm hot cutting wire 384 is heated after being powered on, and the diaphragm hot cutting wire 384 is used to cut the diaphragm and to heat the edge of the diaphragm.The left and right movement of the second hot cutting block 386 can drive the other end of the diaphragm hot cutting wire 384 to move left and right, thereby tensioning the diaphragm hot cutting wire 384. When the diaphragm is cut by the diaphragm hot cutting wire 384, uneven cuts can be avoided, thereby improving the quality of the overall battery cell.

[0038] In this embodiment, the first hot cutting block 385 of the first hot cutting mechanism 38 is arranged on the side of the hot cutting support plate 382 located on the left close to the stacking table 31 through the hot cutting adapter plate 3821, the hot cutting tensioning cylinder 387 of the first hot cutting mechanism 38 is arranged on the side of the hot cutting support plate 382 located on the right close to the stacking table 31, the first hot cutting mounting block 385 of the second hot cutting mechanism 39 is arranged on the side of the hot cutting support plate 382 located on the right close to the stacking table 31 through the hot cutting adapter plate 3821, and the hot cutting tensioning cylinder 387 of the second hot cutting mechanism 39 is arranged on the side of the hot cutting support plate 382 located on the left close to the stacking table 31.

[0039] In actual application, S1, the diaphragm is first unwound through the diaphragm unwinding device 40, and the unwound diaphragm is clamped through the diaphragm pulling device 50, and then the diaphragm pulling device 50 is driven to move backward through the two multi-actuator linear motors 72, so that the diaphragm can be driven to move backward through the diaphragm pulling device 50 so that the diaphragm is laid on the two stacking plates 312 and multiple filling blocks 316 of the stacking table 31, thereby forming the first layer of diaphragm of the whole battery cell. S2, then the second left and right moving components of the two second pressing knife mechanisms 36 respectively drive the corresponding multiple second pressing knives 368 to move toward the direction close to the stacking table 31, until the second pressing knives 368 of the two second pressing knife mechanisms 36 are respectively located above the two sides of the first layer of diaphragm, and then the corresponding second pressing knives 368 are respectively driven to move downward through the second pressing knife cylinders 363, so that the multiple second pressing knives 368 of the two second pressing knife mechanisms 36 can respectively press the two sides of the first layer of diaphragm. S3. Then, the two hot cutting lifting cylinders 383 of the first hot cutting mechanism 38 drive the diaphragm hot cutting wire 384 to move upward, so that the first layer of diaphragm can be cut off by the diaphragm hot cutting wire 384, and then the two hot cutting lifting cylinders 383 drive the diaphragm hot cutting wire 384 to move downward to the initial position, and then the first layer of diaphragm is released by pulling the diaphragm device 50 and the two multi-motor linear motors 72 drive the pulling diaphragm device 50 to move forward to the initial position.

[0040] S4, then the transport device 70 sucks multiple negative electrode sheets, for example, four negative electrode sheets, on the negative electrode sheet pre-positioning device 60a and places the multiple negative electrode sheets on the first layer of the diaphragm of the stacking platform 31, and the multiple negative electrode sheets are arranged in sequence from left to right, and the first negative electrode sheet and the last negative electrode sheet do not cover both sides of the first layer of the diaphragm. Then, the first left and right moving components of the two first knife pressing mechanisms 35 respectively drive the corresponding multiple first knife pressing knives 358 to move toward the stacking platform 31, until the multiple first knife pressing knives 358 of the two first knife pressing mechanisms 35 are respectively located above the end of the first negative electrode sheet away from the center of the stacking platform 31 and the end of the last negative electrode sheet away from the center of the stacking platform 31, and then the first knife pressing cylinder 353 drives the corresponding first knife pressing knives 358 to move downward, so that the multiple first knife pressing knives 358 of the two first knife pressing mechanisms 35 can respectively press the end of the first negative electrode sheet away from the center of the stacking platform 31 and the end of the last negative electrode sheet away from the center of the stacking platform 31. At the same time, the second pressing cylinders 363 of the two second pressing mechanisms 36 respectively drive the corresponding second pressing knives 368 to move upward so that the multiple second pressing knives 368 of the two second pressing mechanisms 36 are separated from the two sides of the first layer of diaphragm, and then the second left and right moving components of the two second pressing mechanisms 36 respectively drive the corresponding multiple second pressing knives 368 to move away from the stacking table 31 to the initial position so that the multiple second pressing knives 368 of the two second pressing mechanisms 36 are moved out of the first negative electrode sheet and the first layer of diaphragm, and out of the last negative electrode sheet and the first layer of diaphragm, respectively.

[0041] S5. The unrolled diaphragm is clamped by the diaphragm pulling device 50, and then the diaphragm pulling device 50 is driven to move backward by two multi-motor linear motors 72, so that the diaphragm can be driven to move backward by the diaphragm pulling device 50 to lay the diaphragm on the multiple negative electrode sheets on the stacking table 31, thereby forming the second layer of diaphragm of the overall battery cell. S6, then the two second knife pressing mechanisms 36 are used to press the two sides of the second layer of diaphragm respectively. The action of this step is the same as the action of step S2. At the same time, the first knife pressing cylinders 353 of the two first knife pressing mechanisms 35 drive the corresponding first knife pressing tools 358 to move upward respectively, so that the multiple first knife pressing tools 358 of the two first knife pressing mechanisms 35 are separated from the end of the first negative electrode sheet away from the center of the stacking platform 31 and the end of the last negative electrode sheet away from the center of the stacking platform 31 respectively. Then, the first left and right moving components of the two first knife pressing mechanisms 35 drive the corresponding multiple first knife pressing tools 358 to move to the initial position in the direction away from the stacking platform 31 respectively, so that the multiple first knife pressing tools 358 of the two first knife pressing mechanisms 35 are moved out of the first negative electrode sheet and the second layer of diaphragm respectively, and moved out of the last negative electrode sheet and the second layer of diaphragm. S7, the action of this step is the same as the action of step S3. S8. Then, the transport device 70 is used to absorb multiple positive electrode sheets, for example, four positive electrode sheets, on the positive electrode sheet pre-positioning device 60b and place the multiple positive electrode sheets on the second layer of the diaphragm of the stacking table 31. The multiple positive electrode sheets are arranged in sequence from left to right, and each positive electrode sheet corresponds to a negative electrode sheet. Then, two first pressing knife mechanisms 35 are used to press the end of the first positive electrode sheet away from the center of the stacking table 31 and the end of the last positive electrode sheet away from the center of the stacking table 31 respectively. The action of this step is the same as the action of step S4. S9. The unrolled diaphragm is clamped by the diaphragm pulling device 50, and then the diaphragm pulling device 50 is driven by two multi-motor linear motors 72 to move backward, so that the diaphragm can be driven to move backward by the diaphragm pulling device 50 so that the diaphragm is laid on the multiple positive electrode sheets on the stacking table 31, thereby forming the third layer of the diaphragm of the overall battery cell. S10, then the two second pressing knife mechanisms 36 are used to press the two sides of the third layer of diaphragm respectively. The action of this step is the same as the action of step S2. At the same time, the first pressing knife cylinders 353 of the two first pressing knife mechanisms 35 are used to drive the corresponding first pressing knife 358 to move upward respectively, so that the multiple first pressing knives 358 of the two first pressing knife mechanisms 35 are separated from the end of the first positive electrode sheet away from the center of the stacking platform 31 and the end of the last positive electrode sheet away from the center of the stacking platform 31 respectively. Then, the first left and right moving components of the two first pressing knife mechanisms 35 are used to drive the corresponding multiple first pressing knives 358 to move to the initial position in the direction away from the stacking platform 31 respectively, so that the multiple first pressing knives 358 of the two first pressing knife mechanisms 35 are moved out of the first positive electrode sheet and the third layer of diaphragm respectively, and moved out of the last positive electrode sheet and the third layer of diaphragm.S10. Repeat the process of steps S4-S9 until the last layer of diaphragm is laid on the last layer of multiple positive plates, so that the whole battery cell is obtained. S11. The two hot cutting lifting cylinders 383 of the first hot cutting mechanism 38 and the second hot cutting mechanism 39 drive the diaphragm hot cutting wire 384 to move upward. During the process of the diaphragm hot cutting wire 384 of the first hot cutting mechanism 38 and the second hot cutting mechanism 39 moving upward, the diaphragm hot cutting wire 384 of the first hot cutting mechanism 38 and the second hot cutting mechanism 39 can be used to heat the front and rear edges of all diaphragms of the whole battery cell, so that the front and rear edges of all diaphragms are adhered together, so as to achieve the edge sealing of the front and rear sides of the whole battery cell. Then, the two hot cutting lifting cylinders 383 of the first hot cutting mechanism 38 and the second hot cutting mechanism 39 drive the diaphragm hot cutting wire 384 to move downward to the initial position.

[0042] Combination Figure 8 As shown, the positive electrode sheet pre-positioning device 60a and the negative electrode sheet pre-positioning device 60b both include a plurality of pre-positioning bases 61, a plurality of alignment robots 62 and a plurality of positioning platforms 63. The plurality of pre-positioning bases 61 are arranged in sequence from left to right and are connected to each other. The plurality of pre-positioning bases 61 are all slidably arranged at the top of the frame. The plurality of alignment robots 62 correspond to the plurality of pre-positioning bases 61 one by one and are respectively arranged at the top of the corresponding pre-positioning bases 61. The plurality of positioning platforms 63 correspond to the plurality of alignment robots 62 one by one and are respectively arranged at the top of the corresponding alignment robots 62. The alignment robots 62 are used to drive the corresponding positioning platforms 63 to rotate. In this embodiment, there are four pre-positioning bases 61, and the number of alignment robots 62 and positioning platforms 63 corresponds to the number of pre-positioning bases 61, which are also four respectively.

[0043] Combination Figures 9 to 11As shown, the transport device 70 includes two transport installation platforms 71 that are arranged opposite to each other, a positive electrode sheet outer suction cup manipulator 73, a positive electrode sheet inner suction cup manipulator 74, a negative electrode sheet outer suction cup manipulator 75, and a negative electrode sheet inner suction cup manipulator 76. The transport installation platform 71 is arranged on the top of the frame through a transport base 711, and the number of the transport bases 711 can be set according to actual conditions. Two multi-motor linear motors 72 are respectively provided on the side close to the two transport and installation platforms 71, the negative electrode sheet outer suction cup manipulator 75 and the positive electrode sheet outer suction cup manipulator 73 are symmetrically arranged front to back and are respectively located above the negative electrode sheet conveying line 25 and above the positive electrode sheet conveying line 15, the negative electrode sheet inner suction cup manipulator 76 and the positive electrode sheet inner suction cup manipulator 74 are symmetrically arranged front to back and are located between the negative electrode sheet outer suction cup manipulator 75 and the positive electrode sheet outer suction cup manipulator 73, and the two ends of the negative electrode sheet outer suction cup manipulator 75, the negative electrode sheet inner suction cup manipulator 76, the positive electrode sheet inner suction cup manipulator 74 and the positive electrode sheet outer suction cup manipulator 73 are respectively connected to the two multi-motor linear motors 72, and the two multi-motor linear motors 72 are used to drive the negative electrode sheet outer suction cup manipulator 75, the negative electrode sheet inner suction cup manipulator 76, the positive electrode sheet inner suction cup manipulator 74 and the positive electrode sheet outer suction cup manipulator 73 to move forward and backward. The negative electrode sheet pre-positioning device 60b is located below between the negative electrode sheet outer suction cup manipulator 75 and the negative electrode sheet inner suction cup manipulator 76, the positive electrode sheet pre-positioning device 60a is located below between the positive electrode sheet inner suction cup manipulator 74 and the positive electrode sheet outer suction cup manipulator 73, and the stacking device 30 is located below between the negative electrode sheet inner suction cup manipulator 76 and the positive electrode sheet inner suction cup manipulator 74. The diaphragm unwinding device 40 is arranged at the top of the two transport mounting platforms 71 and is located above the negative electrode sheet outer suction cup manipulator 75 and the negative electrode sheet inner suction cup manipulator 76. The diaphragm pulling device 50 is located between the negative electrode sheet inner suction cup manipulator 76 and the positive electrode sheet inner suction cup manipulator 74. The two ends of the diaphragm pulling device 50 are respectively connected to two multi-motor linear motors 72, and the two multi-motor linear motors 72 are used to drive the diaphragm pulling device 50 to move forward and backward.

[0044] The negative electrode sheet external suction cup manipulator 75 and the positive electrode sheet external suction cup manipulator 73 both include two external suction cup lifting linear modules 731, an external suction cup translation linear module 732, and a plurality of external suction cup assemblies arranged in sequence from left to right. The two external suction cup lifting linear modules 731 are respectively connected to the two multi-motor linear motors 72, and the two ends of the external suction cup translation linear module 732 are respectively connected to the two external suction cup lifting linear modules 731. The plurality of external suction cup assemblies are all arranged on the side of the external suction cup translation linear module 732 away from the stacking device 30. The two multi-motor linear motors 72 are respectively used to drive the two outer suction cup lifting linear modules 731 to move forward and backward, thereby driving the outer suction cup translation linear module 732 and multiple outer suction cup assemblies to move forward and backward. The two outer suction cup lifting linear modules 731 are used to drive the outer suction cup translation linear module 732 to move up and down, thereby driving multiple outer suction cup assemblies to move up and down. The outer suction cup translation linear module 732 is used to drive multiple outer suction cup assemblies to move left and right. In this embodiment, there are four outer suction cup assemblies. The outer suction cup assembly includes an outer suction cup base 733, an outer suction cup mounting seat 734 and multiple outer suction cup groups arranged at intervals from front to back. The number of outer suction cup groups can be set according to actual conditions. The outer suction cup base 733 is arranged on the side of the outer suction cup translation linear module 732 away from the stacking device 30, and the outer suction cup mounting seat 734 is arranged at the bottom end of the outer suction cup base 733. The outer suction cup group includes an outer suction cup mounting plate 735 and outer suction cups 736 that are arranged at intervals on the left and right and penetrate the outer suction cup mounting plate 735. The outer suction cup mounting plate 735 is arranged at the bottom of the outer suction cup mounting seat 734. One end of the outer suction cup 736 is located below the outer suction cup mounting plate 735, and the other end of the outer suction cup 736 is located above the outer suction cup mounting plate 735. The other ends of the outer suction cups 736 of the multiple outer suction cup groups of the negative electrode sheet outer suction cup manipulator 75 are used to be connected to the first vacuum pumping system, and the other ends of the outer suction cups 736 of the multiple outer suction cup groups of the positive electrode sheet outer suction cup manipulator 73 are used to be connected to the second vacuum pumping system. The first vacuum pumping system and the second vacuum pumping system are used to vacuum the negative electrode sheet outer suction cup machine The outer suction cups 736 of the multiple outer suction cup assemblies of the manipulator 75 and the positive electrode sheet outer suction cup manipulator 73 are evacuated, so that the outer suction cups 736 of the multiple outer suction cup assemblies of the negative electrode sheet outer suction cup manipulator 75 and the positive electrode sheet outer suction cup manipulator 73 can respectively absorb multiple, for example, four negative electrode sheets and multiple, for example, four positive electrode sheets, and the outer suction cups 736 of the multiple outer suction cup assemblies of the negative electrode sheet outer suction cup manipulator 75 and the positive electrode sheet outer suction cup manipulator 73 are stopped from evacuating by the first vacuum pumping system and the second vacuum pumping system, so that the outer suction cups 736 of the multiple outer suction cup assemblies of the negative electrode sheet outer suction cup manipulator 75 and the positive electrode sheet outer suction cup manipulator 73 can respectively release multiple, for example, four negative electrode sheets and multiple, for example, four positive electrode sheets.

[0045] The negative electrode sheet internal suction cup manipulator 74 and the positive electrode sheet internal suction cup manipulator 76 each include two internal suction cup lifting linear modules 741, an internal suction cup translation linear module 742, and a plurality of internal suction cup assemblies arranged in sequence from left to right. The two internal suction cup lifting linear modules 741 are respectively connected to the two multi-motor linear motors 72, and the two ends of the internal suction cup translation linear module 742 are respectively connected to the two internal suction cup lifting linear modules 741, and the plurality of internal suction cup assemblies are all arranged on the side of the internal suction cup translation linear module 742 away from the stacking device 30. The two multi-motor linear motors 72 are respectively used to drive the two inner suction cup lifting linear modules 741 to move forward and backward, thereby driving the inner suction cup translation linear module 742 and multiple inner suction cup assemblies to move forward and backward. The two inner suction cup lifting linear modules 741 are used to drive the inner suction cup translation linear module 742 to move up and down, thereby driving multiple inner suction cup assemblies to move up and down. The inner suction cup translation linear module 742 is used to drive multiple inner suction cup assemblies to move left and right. In this embodiment, there are four inner suction cup assemblies. The inner suction cup assembly includes an inner suction cup base 743, an inner suction cup mounting seat 744, two inner suction cup cylinders 745 arranged in a front-to-back relationship, and an inner suction cup plate 746. The inner suction cup base 743 is arranged on the side of the inner suction cup translation linear module 742 away from the stacking device 30, and the inner suction cup mounting seat 744 is arranged at the bottom end of the inner suction cup base 743. The two inner suction cup cylinders 745 are respectively arranged at the two ends of the inner suction cup mounting seat 744, and the inner suction cup plate 746 is located below the inner suction cup mounting seat 744. The output ends of the two inner suction cup cylinders 745 are respectively connected to the top of the inner suction cup plate 746. The two inner suction cup cylinders 745 are used to drive the inner suction cup plate 746 to move up and down. A plurality of suction holes are evenly arranged at the bottom end of the inner suction cup plate 746, an air passage is arranged inside the inner suction cup plate 746, a joint is arranged at the top end of the inner suction cup plate 746, the air passage is respectively connected with the plurality of suction holes and the joint, the joints of the negative electrode sheet inner suction cup manipulator 76 and the positive electrode sheet inner suction cup manipulator 74 are respectively used to connect with the third vacuum pumping system and the fourth vacuum pumping system, and the plurality of suction holes are respectively vacuumed through the corresponding joints and the air passage by the third vacuum pumping system and the fourth vacuum pumping system, so that the inner suction cup plate 746 of the plurality of inner suction cup assemblies of the negative electrode sheet inner suction cup manipulator 76 and the positive electrode sheet inner suction cup manipulator 74 can respectively absorb a plurality of, for example, four negative electrode sheets and a plurality of, for example, four positive electrode sheets, and the plurality of suction holes are stopped from being vacuumed through the corresponding joints and the air passage by the third vacuum pumping system and the fourth vacuum pumping system, so that the inner suction cup plates of the plurality of inner suction cup assemblies of the negative electrode sheet inner suction cup manipulator 76 and the positive electrode sheet inner suction cup manipulator 74 can respectively release a plurality of, for example, four negative electrode sheets and a plurality of, for example, four positive electrode sheets.

[0046] In actual application, the two multi-motor linear motors 72 are first used to drive the negative electrode sheet outer suction cup manipulator 75 to move forward, so that the multiple outer suction cup assemblies of the multiple negative electrode sheet outer suction cup manipulators 75 are located above the negative electrode sheet conveying line 25. Then, the multiple outer suction cup assemblies are driven to move left and right by the outer suction cup translation linear module 732 of the negative electrode sheet outer suction cup manipulator 75 to adjust the left and right positions of the multiple outer suction cup assemblies. Then, the multiple outer suction cup assemblies are driven to move downward by the two outer suction cup lifting linear modules 731 of the negative electrode sheet outer suction cup manipulator 75, so that the multiple, for example, four negative electrode sheets on the negative electrode sheet conveying line 25 are sucked by the multiple outer suction cup groups of the multiple outer suction cup assemblies. Then, the multiple outer suction cup assemblies are driven to move upward to the initial position by the two outer suction cup lifting linear modules 731 of the negative electrode sheet outer suction cup manipulator 75. Then, the multiple outer suction cup assemblies of the negative electrode sheet outer suction cup manipulator 75 are driven to move backward by two multi-motor linear motors 72, so that the multiple negative electrode sheets are respectively located above the multiple positioning platforms 63 of the negative electrode sheet pre-positioning device 60b. Then, the multiple outer suction cup assemblies are driven downward by two outer suction cup lifting linear modules 731 of the negative electrode sheet outer suction cup manipulator 75, so that the multiple negative electrode sheets are respectively placed on the multiple positioning platforms 63 of the negative electrode sheet pre-positioning device 60b by multiple outer suction cup assemblies of the multiple outer suction cup assemblies. Then, the multiple outer suction cup assemblies are driven upward to the initial position by two outer suction cup lifting linear modules 731 of the negative electrode sheet outer suction cup manipulator 75, and then the multiple outer suction cup assemblies of the negative electrode sheet outer suction cup manipulator 72 are driven to move forward by two multi-motor linear motors 72, so as to continue to suck the multiple negative electrode sheets on the negative electrode sheet conveying line 25. After the multiple negative electrode sheets are placed on the multiple positioning platforms 63 of the negative electrode sheet pre-positioning device 60b, the multiple alignment robots 62 of the negative electrode sheet pre-positioning device 60b drive the corresponding positioning platforms 63 to rotate, so that the multiple negative electrode sheets can be corrected and positioned to ensure the accuracy of the positions of the multiple negative electrode sheets. Then, the multiple inner suction cup assemblies of the negative electrode sheet inner suction cup manipulator 76 are driven forward by two multi-motor linear motors 72, so that the multiple inner suction cup assemblies are respectively located above the multiple negative electrode sheets on the negative electrode sheet pre-positioning device 60b. Then, the inner suction cup translation linear module 742 of the negative electrode sheet inner suction cup manipulator 76 drives the multiple inner suction cup assemblies to move left and right to adjust the left and right positions of the multiple inner suction cup assemblies. Then, the two inner suction cup lifting linear modules 741 of the negative electrode sheet inner suction cup manipulator 76 drive the multiple inner suction cup assemblies to move downward to the predetermined position, and then the two inner suction cup cylinders 745 drive the corresponding inner suction cup plates 746 to move downward, so that the corresponding negative electrode sheets can be sucked respectively by the inner suction cup plates 746 of the multiple inner suction cup assemblies, and then the two inner suction cup cylinders 745 drive the corresponding inner suction cup plates 746 to move upward to the initial position.Then, the two inner suction cup lifting linear modules 741 of the negative electrode sheet inner suction cup manipulator 76 drive the multiple inner suction cup assemblies to move upward to the initial position. Then, the two multi-motor linear motors 72 drive the multiple inner suction cup assemblies of the negative electrode sheet inner suction cup manipulator 76 to move backward, so that the multiple inner suction cup assemblies are respectively located above the stacking table 31. Then, the two inner suction cup lifting linear modules 741 of the negative electrode sheet inner suction cup manipulator 76 drive the multiple inner suction cup assemblies to move downward to the predetermined position, and then the two inner suction cup cylinders 745 drive the corresponding inner suction cup plates 746 to move downward, so as to place the multiple negative electrode sheets on the diaphragm of the stacking table 31 through the inner suction cup plates 746 of the multiple inner suction cup assemblies. Then, the two inner suction cup cylinders 745 drive the corresponding inner suction cup plates 746 to move upward to the initial position, and then the two inner suction cup lifting linear modules 741 of the negative electrode sheet inner suction cup manipulator 76 drive the multiple inner suction cup assemblies to move upward to the initial position. Then, the two multi-motor linear motors 72 drive the multiple inner suction cup assemblies of the negative electrode sheet inner suction cup manipulator 76 to move forward to the initial position.

[0047] The working principle of the positive electrode sheet external suction cup manipulator 73 is the same as that of the negative electrode sheet external suction cup manipulator 75. The only difference is that the direction of movement of the positive electrode sheet external suction cup manipulator 73 driven by two multi-motor linear motors 72 is opposite to that of the negative electrode sheet external suction cup manipulator 75, and the multiple external suction cup components of the positive electrode sheet external suction cup manipulator 73 suck up multiple positive electrode sheets on the positive electrode sheet conveyor line 15 and place the multiple positive electrode sheets on the multiple positioning platforms 63 of the positive electrode sheet pre-positioning device 60a. In this way, the multiple positioning robots 62 of the positive electrode sheet pre-positioning device 60a respectively drive the corresponding positioning platforms 63 to rotate, so that the multiple positive electrode sheets can be corrected and positioned separately to ensure the accuracy of the positions of the multiple positive electrode sheets. The working principle of the positive electrode sheet internal suction cup manipulator 74 is the same as that of the negative electrode sheet internal suction cup manipulator 76. The only difference is that the direction of movement of the positive electrode sheet internal suction cup manipulator 74 is opposite to that of the negative electrode sheet internal suction cup manipulator 76 driven by two multi-motor linear motors 72, and the multiple internal suction cup assemblies of the positive electrode sheet internal suction cup manipulator 74 suck up the multiple positive electrode sheets on the positive electrode sheet pre-positioning device 60a and place the multiple positive electrode sheets on the diaphragm of the stacking table 31.

[0048] Combination Figures 12 to 15As shown, the battery cell slitting device 80 includes a slitting base 81, a base linear module 82 arranged at the top of the frame, a plurality of slitting fixtures 83 and a slitting mechanism 84. The slitting base 81 is arranged at the top of the base linear module 82, and the base linear module 82 is used to drive the slitting base 81 to move left and right. A plurality of slitting fixtures 83 are arranged in sequence from left to right. The slitting fixtures 83 and the slitting mechanism 84 are both arranged at the top of the slitting base 81, and the left and right movement of the slitting base 81 can drive the plurality of slitting fixtures 83 and the slitting mechanism 84 to move left and right. The number of slitting fixtures 83 corresponds to the number of the outer suction cup assemblies and the inner suction cup assemblies of the conveying device 70. The attached figure of this embodiment shows a battery cell slitting device 80 with three slitting fixtures 83.

[0049] The slitting fixture 83 includes a fixture mounting plate 831, a lower pressing mounting seat 832, an upper pressing mounting seat 833 and two slitting lifting cylinders 834 arranged at the top of the slitting base 81. The lower pressing mounting seat 832 is arranged at the top of the fixture mounting plate 831, and a plurality of first air-avoiding grooves 8321 are arranged at the top of the lower pressing mounting seat 832, and the plurality of first air-avoiding grooves 8321 are arranged in sequence from front to back. The upper pressing mounting seat 833 is located above the lower pressing mounting seat 832 and is opposite to the lower pressing mounting seat 832. The bottom end of the upper pressing mounting seat 833 is provided with a plurality of second air-avoiding grooves 8331, and the plurality of second air-avoiding grooves 8331 correspond to the plurality of first air-avoiding grooves 8321 one by one. The two slitting lifting cylinders 834 are respectively arranged at the top end of the clamp mounting plate 831, the lower clamping mounting seat 832 is located between the two slitting lifting cylinders 834, and the output ends of the two slitting lifting cylinders 834 are respectively connected to the two ends of the upper clamping mounting seat 833.

[0050] The slitting mechanism 84 includes two slitting translation linear modules 841 arranged in front and back relative to each other, two slitting lifting linear modules 842, a slitting installation plate 843 and a plurality of slitting hot cutting wires 844. The two slitting translation linear modules 841 are respectively arranged at the top of the slitting base 81, a plurality of slitting fixtures 83 are located between the two slitting translation linear modules 841, and two slitting lifting linear modules 842 are respectively arranged at the top of the two slitting translation linear modules 812. The slitting installation plate 843 is located above the plurality of slitting fixtures 83. The two ends of the slitting installation plate 843 are respectively connected to the two slitting lifting linear modules 842, a plurality of slitting hot cutting wires 844 are located below the slitting installation plate 843 and are arranged in sequence from left to right. The number of slitting hot cutting wires 844 is one less than the number of slitting fixtures 83, and each slitting hot cutting wire 844 is respectively located between two adjacent slitting fixtures 83. One end and the other end of the slitting hot cutting wire 844 are respectively provided with a first slitting block 8441 and a second slitting block 8442. One end and the other end of the slitting hot cutting wire 844 are respectively used to be electrically connected to the control system, so that the slitting hot cutting wire 844 can be powered by the control system, and the slitting hot cutting wire 844 generates heat after being powered on. In this embodiment, there are four negative electrode sheets and four positive electrode sheets on the stacking table 31, so there are three gaps between the electrode sheets of the whole battery cell. In actual application, each slitting hot cutting wire 844 corresponds to a gap, and the slitting hot cutting wire 844 is used to cut the diaphragm from the corresponding gap, so as to realize the slitting of the whole battery cell into multiple single battery cells. The first slitting block 8441 is arranged on one side of the first slitting pillar 845 and close to the bottom end of the first slitting pillar 845, a first mounting block 8451 is provided at the top end of the first slitting pillar 845, a second mounting block 8452 is provided on one side of the first mounting block 8451, the second mounting block 8452 is arranged at the bottom end of the slitting mounting plate 843, the second slitting block 8442 is arranged on one side of the second slitting pillar 846 and close to the bottom end of the second slitting pillar 846, a slitting sliding block 847 is provided on one side of the second slitting pillar 846 at a position close to the top end of the second slitting pillar 846, the slitting sliding block 847 is slidably arranged on one side of the slitting support plate 848, a third mounting block 8481 is provided at the top end of the slitting support plate 848, a fourth mounting block 8482 is provided on one side of the third mounting block 8481, and the fourth mounting block 8482 is arranged at the bottom end of the slitting mounting plate 843.A slitting tensioning cylinder 849 is provided on one side of the slitting support plate 848, and the output end of the slitting tensioning cylinder 849 is connected to the slitting sliding block 847. The slitting tensioning cylinder 849 is located between the second slitting pillar 846 and the plurality of slitting clamps 83. The slitting tensioning cylinder 849 is used to drive the slitting sliding block 847 to move toward or away from the center of the slitting hot cutting wire 844, that is, to move forward and backward, so that the other end of the slitting hot cutting wire 844 can be driven to move toward or away from the center of the slitting hot cutting wire 844 through the second slitting pillar 846 and the second slitting block 8442. By driving the other end of the slitting hot cutting wire 844 to move toward the direction away from the center of the slitting hot cutting wire 844, the slitting hot cutting wire 844 can be tensioned. In this way, when the diaphragm of the entire battery cell is cut by the slitting hot cutting wire 844, the flatness of the cut of the diaphragm can be guaranteed, thereby ensuring the quality of the single battery cell. Multiple slitting fixtures 83 are located between the first slitting pillar 845 and the second slitting pillar 846. The two slitting translation linear modules 841 are respectively used to drive the two slitting lifting linear modules 842 to move left and right, thereby driving the slitting installation plate 843 and the multiple slitting hot cutting wires 844 to move left and right, so that the left and right positions of the multiple slitting hot cutting wires 844 can be adjusted, so as to ensure that the widths of the multiple single battery cells after slitting are consistent. The two slitting lifting linear modules 842 are used to drive the slitting installation plate 843 to move up and down, thereby driving the multiple slitting hot cutting wires 844 to move up and down. In this embodiment, the first slitting block 8441 includes a first connecting block 84412 and a second connecting block 84411, a first mounting groove is provided on one side of the first slitting pillar 845, the first connecting block 84412 is arranged in the first mounting groove, and the second connecting block 84411 is arranged on one side of the first slitting pillar 845 and on the side of the first connecting block 84412 away from the bottom of the first mounting groove. The second cutting block 8442 includes a third connecting block 84422 and a fourth connecting block 84421. A second mounting groove is provided on one side of the second cutting pillar 846. The third connecting block 84422 is arranged in the second mounting groove. The fourth connecting block 84421 is arranged on one side of the second cutting pillar 846 and on the side of the third connecting block 84422 away from the bottom of the second mounting groove.

[0051] Combination Fig.16 and Fig.17As shown, the unloading robot 90 includes an unloading base 91, an unloading translation linear module 92, an unloading lifting linear module 93, an unloading motor 94, an unloading rotating shaft 95, a clamping cylinder 96, an upper clamping group and a lower clamping group. The unloading translation linear module 92 is arranged on the side of the unloading base 91 close to the battery cell cutting device 80. The unloading lifting linear module 93 is arranged on the side of the unloading translation linear module 92 close to the battery cell cutting device 80. A unloading mounting seat 921 is arranged on one side of the unloading lifting linear module 93, and an unloading mounting plate 922 is arranged on the side of the unloading mounting seat 921 away from the unloading lifting linear module 93. The unloading motor 94 is arranged on the top of the unloading mounting plate 922 through a motor seat 941. The material unloading shaft 95 passes through the through hole of the material unloading mounting plate 922, one end of the material unloading shaft 95 is connected to the output end of the material unloading motor 94, and the other end of the material unloading shaft 95 is connected to the top of the material unloading top plate 951. A material unloading bearing is provided in the through hole of the material unloading mounting plate 922, and the material unloading bearing is sleeved on the outer periphery of the material unloading shaft 95 to provide rotation support for the material unloading shaft 95. A material unloading side plate 952 is provided at the bottom end of the material unloading top plate 951, and a clamping cylinder 96 is provided on the side of the material unloading side plate 952 away from the battery cell cutting device 80. The upper clamping jaw group and the lower clamping jaw group are arranged opposite to each other in the upper and lower directions. The upper clamping jaw group and the lower clamping jaw group are located between the material unloading side plate 952 and the battery cell cutting device 80 and below the material unloading translation linear module 92. The upper clamp group includes an upper clamp mounting seat 971 and a plurality of upper clamps 972. The upper clamp mounting seat 971 is connected to the output end of the clamp cylinder 96. Specifically, an upper clamp connecting block 971 is provided on the side of the upper clamp mounting seat 971 close to the unloading side plate 952. The end of the upper clamp connecting block 9711 away from the upper clamp mounting seat 971 passes through the through hole 9521 of the loading side plate 952 and is connected to the output end of the clamp cylinder 96. The plurality of upper clamps 972 are arranged in sequence from front to back on the side of the upper clamp mounting seat 971 close to the battery cell cutting device 80. The lower jaw assembly includes a lower jaw mounting seat 981 and a plurality of lower jaws 982. The lower jaw mounting seat 981 is arranged on a side of the unloading side plate 952 close to the battery cell cutting device 80. The plurality of lower jaws 982 are sequentially arranged from front to back on a side of the lower jaw mounting seat 981 close to the battery cell cutting device 80 and correspond to the plurality of upper jaws 972 one by one. The second avoidance grooves 8331 of the plurality of slitting fixtures 83 form a second avoidance channel, and the first avoidance grooves 8321 of the plurality of slitting fixtures 83 form a first avoidance through hole. Each upper jaw 972 corresponds to a second avoidance channel, and the second avoidance channel is used to avoid the corresponding upper jaw 972. Each lower jaw 982 corresponds to a first avoidance channel, and the first avoidance channel is used to avoid the corresponding lower jaw 982. The blanking translation linear module 92 is used to drive the blanking lifting linear module 93 to move forward and backward, thereby driving the blanking motor 94, the blanking shaft 95, the clamping cylinder 96, the upper clamping group and the lower clamping group to move forward and backward.The material unloading lifting linear module 93 is used to drive the unloading motor 94, the unloading shaft 95, the clamping cylinder 96, the upper clamping group and the lower clamping group to move up and down. The material unloading motor 94 is used to drive the unloading shaft 95 to rotate, thereby driving the clamping cylinder 96, the upper clamping group and the lower clamping group to rotate.

[0052] In actual application, after the front and rear sides of the whole battery core are sealed by the first hot cutting mechanism 38 and the second hot cutting mechanism 39, the corresponding multiple filling blocks 316 are driven downward by the filling cylinders 38 of the two filling components until the filling blocks 316 contact the bottom of the corresponding avoidance groove 3141, and the filling blocks 316 are separated from the corresponding through holes. Then, the multiple upper clamps 972 and the multiple lower clamps 982 are driven forward to the position corresponding to the stacking table 31 by the blanking translation linear module 92, and then the multiple upper clamps 972 and the multiple lower clamps 982 are driven to rotate 180 degrees by the blanking motor 94, so that the multiple upper clamps 972 and the multiple lower clamps 982 face the stacking table 31, and then the multiple upper clamps 972 and the multiple lower clamps 982 are driven up and down by the blanking lifting linear module 93, so that the multiple lower clamps 982 correspond to the multiple through holes of the two stacking support plates 312. Then, the lamination table 31 is driven to move to the right by the lamination translation linear module, so that the multiple lower clamps 982 are respectively inserted into the multiple through holes of the lamination table 31, and the multiple upper clamps 972 are located above the integral battery cell on the lamination table 31. Then, the multiple upper clamps 972 are driven to move downward by the clamp cylinder 96, so that the integral battery cell on the lamination table 31 can be clamped by the multiple upper clamps 972 and the multiple lower clamps 982. Then, the lamination table 31 is driven to move to the left to the initial position by the lamination translation linear module, so that the multiple lower clamps 982 are separated from the multiple through holes of the lamination table 31. Then, the multiple upper clamps 972 and the multiple lower clamps 982 are driven to rotate 180 degrees by the unloading motor 94 to return to the initial position. Then, the multiple upper clamps 972 and the multiple lower clamps 982 are driven to move backward to the position corresponding to the battery cell cutting device 80 by the unloading translation linear module 92. Then, the two slitting lifting linear modules 842 are used to drive the multiple slitting hot-cut wires 844 to move upward, so that the multiple slitting hot-cut wires 844 are located above the multiple slitting fixtures 83. Then, the slitting base 81, the multiple slitting fixtures 83 and the slitting mechanism 84 are driven to move to the left by the base linear module 82, so that the whole battery cell is located at the top of the lower clamping mounting seat 832, the multiple upper clamps 972 are respectively inserted into the corresponding second avoidance channels, and the multiple lower clamps 982 are respectively inserted into the corresponding first avoidance channels. Then, the upper clamping mounting seat 833 is driven to move downward by the two slitting lifting cylinders 834 to press the whole battery cell on the top of the lower clamping mounting seat 832. At this time, each slitting hot-cut wire 844 corresponds to a gap between the pole pieces of the whole battery cell. Then, the multiple upper clamps 972 are driven to move upward by the clamp cylinder 96 to loosen the whole battery cell. Then, the slitting base 81 , the plurality of slitting fixtures 83 and the slitting mechanism 84 are driven to move rightward to the initial position by the base linear module 82 .Then, two slitting lifting linear modules 842 are used to drive multiple slitting hot cutting wires 844 to move downward to the initial position. During the downward movement of the slitting hot cutting wires 844, the diaphragm can be cut off from the corresponding gap of the entire battery cell by the slitting hot cutting wires 844, thereby slitting the entire battery cell into multiple, for example, four single battery cells, thus obtaining multiple single battery cells.

[0053] The present invention is capable of producing a plurality of single-cell batteries at one time by means of the positive electrode sheet unwinding mechanism 11, the positive electrode sheet V-angle punching mechanism 12, the positive electrode sheet cutting mechanism 13, the positive electrode sheet detection mechanism 14, the positive electrode sheet conveying line 15, the negative electrode sheet unwinding mechanism 21, the negative electrode sheet V-angle punching mechanism 22, the negative electrode sheet cutting mechanism 23, the negative electrode sheet detection mechanism 24, the negative electrode sheet conveying line 25, the diaphragm unwinding device 40, the diaphragm pulling device 50, the laminating device 30, the positive electrode sheet pre-positioning device 60a, the negative electrode sheet pre-positioning device 60b, the conveying device 70, the battery cell cutting device 80 and the unloading robot 90, thereby improving the production efficiency and reducing the production cost; and the positive electrode sheet pre-positioning device 60a and the negative electrode sheet pre-positioning device 60b can respectively perform deviation correction and positioning on the plurality of positive electrode sheets and the plurality of negative electrode sheets, thereby ensuring the accuracy of the positions of the plurality of positive electrode sheets and the plurality of negative electrode sheets. At the same time, the whole battery cell is first unloaded and then cut, which can reduce the unloading time of the battery cell on the stacking table 31, compared with the method of first cutting on the stacking table 31 and then unloading multiple single battery cells separately. In addition, by setting the first hot cutting mechanism 38 and the second hot cutting mechanism 39, the diaphragm can be cut and the front side of the whole battery cell can be sealed by the first hot cutting mechanism 38, and the back side of the whole battery cell can be sealed by the second hot cutting mechanism. The method of sealing the edges first and then cutting is adopted. In this way, when the whole battery cell is transported to the battery cell cutting device 80 by the unloading robot 90, the edges of the diaphragm of the whole battery cell will not be folded, thereby improving the quality of the whole battery cell.

[0054] The present invention also includes a glue sticking robot 100, a glue sticking device 110, a hot pressing loading robot 120, a hot pressing unloading robot 140, a hot pressing device 130, a QR code glue sticking device 150, a transfer robot 160, a testing device 170 and an unloading conveyor line 180 arranged at the top of the frame. The glue sticking robot 100 is located to the right of the unloading robot 90, and the glue sticking device 110 is located in front of the unloading robot 90 and the glue sticking robot 100. The glue sticking device 110 is used to stick glue to the front, rear, left and right sides of the single cell. The unloading robot 90 is also used to carry multiple single cells on the cell cutting device 80 to the glue sticking robot 100 together. The glue sticking robot 100 is used to carry multiple single cells on the unloading robot 90 to the glue sticking device 110 in sequence. The hot pressing device 130 is located in front of the glue sticking device 110, and the hot pressing feeding manipulator 120 is located between the glue sticking device 110 and the hot pressing device 130. The two-dimensional code glue sticking device 150, the testing device 160 and the unloading conveyor line 170 are arranged in sequence from left to right and are located in front of the hot pressing device 130, and the hot pressing unloading manipulator 140 is located to the left of the hot pressing device 130 and the two-dimensional code glue sticking device 150. The transfer manipulator 160 is located between the two-dimensional code glue sticking device 150 and the testing device 170. The hot pressing device 130 is used to hot press the single battery cell, and the hot pressing feeding manipulator 120 is used to transport the single battery cell on the glue sticking device 110 to the hot pressing device 130. The two-dimensional code glue sticking device 150 is used to stick two-dimensional code glue on the single battery cell. The testing device 160 is used to perform Hi-pot test and thickness test on the single battery cell. The unloading conveyor line 180 is used to convey the single cells to the unloading station to realize unloading of the single cells. The hot pressing unloading robot 140 is used to transport the single cells on the hot pressing device 130 to the two-dimensional code gluing device 150. The transfer robot 160 is used to transport the single cells on the two-dimensional code gluing device 150 to the testing device 170 and to transport the single cells on the testing device 170 to the unloading conveyor line 180.

[0055] The present invention does not change the structures of the glue sticking robot 100, glue sticking device 110, hot pressing feeding robot 120, hot pressing unloading robot 140, hot pressing device 130, QR code glue sticking device 150, transfer robot 160, testing device 170 and unloading conveyor line 180, and conventional structures can be used. The number of hot pressing devices 130 can be set according to actual conditions.

[0056] In actual application, after the whole battery cell is cut into multiple, for example, four single battery cells by multiple slitting hot cutting wires 844 of the battery cell slitting device 80, the multiple slitting hot cutting wires 844 are driven to move upward by two slitting lifting linear modules 842, so that the multiple slitting hot cutting wires 844 are located above the multiple slitting clamps 83. Then, the slitting base 81, the multiple slitting clamps 83 and the slitting mechanism 84 are driven to move leftward by the base linear module 82, so that the multiple upper clamps 972 of the unloading manipulator 90 are respectively inserted into the corresponding second avoidance channels, the multiple lower clamps 982 are respectively inserted into the corresponding first avoidance channels, and the multiple upper clamps 972 and the multiple lower clamps 982 are respectively located above and below the multiple single battery cells, and then the multiple upper clamps 972 are driven to move downward by the clamp cylinder 96, so that the multiple single battery cells are clamped by the multiple upper clamps 972 and the multiple lower clamps 982. Then, the upper clamping mount 833 is driven to move upward to the initial position by two slitting lifting cylinders 834 to release multiple single cells. Then, the slitting base 81, multiple slitting fixtures 83 and slitting mechanism 84 are driven to move rightward to the initial position by the base linear module 82. Then, the multiple slitting hot cutting wires 844 are driven downward to the initial position by two slitting lifting linear modules 842. Then, the multiple upper clamps 972, multiple lower clamps 982 and multiple single cells are driven forward to the glue sticking robot 110 by the blanking translation linear module 92. Then, the multiple single cells on the unloading robot 90 are sequentially transported to the glue-applying device 110 by the glue-applying robot 110, so that the front, rear, left and right sides of the multiple single cells are glued in sequence by the glue-applying device 110. After the glue-applying device 110 completes the glue-applying of each single cell, the single cells on the glue-applying device 110 are transported to the hot pressing device 130 by the hot pressing loading robot 120, so that the single cells are compacted by the hot pressing device 130. Then, the single cells on the hot pressing device 130 are transported to the two-dimensional code glue-applying device 150 by the hot pressing unloading robot 140, so that the two-dimensional code glue-applying device 150 is used to apply two-dimensional code glue to the single cells. Then, the single cells on the two-dimensional code glue-applying device 150 are transported to the testing device 170 by the transfer robot 160, so that the single cells are subjected to Hi-pot test and thickness test by the testing device 170. Then, the single cells on the testing device 170 are transported to the unloading conveyor line 180 by the transfer robot 160 , so that the single cells are transported to the unloading station through the unloading conveyor line 180 for unloading.

[0057] The present invention arranges a glue sticking robot 100, a glue sticking device 110, a hot pressing loading robot 120, a hot pressing unloading robot 140, a hot pressing device 130, a two-dimensional code glue sticking device 150, a transfer robot 160, a testing device 170 and an unloading conveyor line 180, so that the side glue sticking, hot pressing, two-dimensional code glue sticking, Hi-pot test and thickness test of the cut single battery cells can be performed on the same device without having to be performed through different devices, which can reduce production time, improve production efficiency and reduce production costs.

[0058] The above is a specific description of the preferred implementation of the present invention, but the invention is not limited to the embodiments. Those skilled in the art can make various equivalent modifications or substitutions without violating the spirit of the present invention. These equivalent modifications or substitutions are all included in the scope defined by the claims of this application.

Claims

1. A laminating device for laminating multiple sheets at a time, comprising a frame, a positive electrode sheet die-cutting device, a negative electrode sheet die-cutting device arranged front and back opposite to the positive electrode sheet die-cutting device, a laminating device, a diaphragm unwinding device and a diaphragm pulling device, wherein the positive electrode sheet die-cutting device comprises a positive electrode sheet unwinding mechanism for unwinding a positive electrode sheet strip, a positive electrode sheet V-angle punching mechanism for V-angle punching on both sides of the positive electrode sheet strip, a positive electrode sheet cutting mechanism for cutting the positive electrode sheet strip into positive electrode sheets, a positive electrode sheet detection mechanism for size detection and surface defect detection of the positive electrode sheet, and a positive electrode sheet conveying line for conveying the positive electrode sheet, wherein the negative electrode sheet die-cutting device comprises a positive electrode sheet unwinding mechanism for unwinding a positive electrode sheet strip, which are arranged from left to right on the top of the frame, a positive electrode sheet V-angle punching mechanism for V-angle punching on both sides of the positive electrode sheet strip, a positive electrode sheet cutting mechanism for cutting the positive electrode sheet strip into positive electrode sheets, a positive electrode sheet detection mechanism for size detection and surface defect detection of the positive electrode sheet, and a positive electrode sheet conveying line for conveying the positive electrode sheet, wherein the negative electrode sheet die-cutting device comprises a positive electrode sheet unwinding mechanism for unwinding a negative electrode sheet strip, which are arranged from left to right on the top of the frame, A negative electrode sheet unwinding mechanism for rolling, a negative electrode sheet V-angle punching mechanism for V-angle punching on both sides of the negative electrode sheet strip, a negative electrode sheet cutting mechanism for cutting the negative electrode sheet strip into negative electrode sheets, a negative electrode sheet detection mechanism for size detection and surface defect detection of the negative electrode sheets, and a negative electrode sheet conveying line for conveying negative electrode sheets. The stacking device includes a stacking table, the diaphragm unwinding device is used to unwind the diaphragm, and the diaphragm pulling device is used to clamp the diaphragm and drive the diaphragm to move backward, so as to lay the diaphragm on the stacking table, lay the diaphragm on multiple negative electrode sheets on the stacking table, and lay the diaphragm on multiple positive electrode sheets on the stacking table. The diaphragm unwinding device and the diaphragm pulling device are both located in front of the stacking device and above the stacking device, characterized in that Also includes: A positive electrode sheet pre-positioning device is slidably arranged on the top of the frame and is used for correcting and positioning a plurality of positive electrode sheets; A negative electrode sheet pre-positioning device is slidably arranged at the top of the frame and arranged front and back opposite to the positive electrode sheet pre-positioning device, and is used for correcting and positioning a plurality of negative electrode sheets, and the stacking device is located between the positive electrode sheet pre-positioning device and the negative electrode sheet pre-positioning device; A transport device, arranged at the top of the frame and located between the positive electrode sheet conveying line and the negative electrode sheet conveying line, used for transporting a plurality of positive electrode sheets on the positive electrode sheet conveying line to the positive electrode sheet pre-positioning device, used for transporting a plurality of negative electrode sheets on the negative electrode sheet conveying line to the negative electrode sheet pre-positioning device, used for transporting a plurality of positive electrode sheets on the positive electrode sheet pre-positioning device to the diaphragm of the laminating table, and used for transporting a plurality of negative electrode sheets on the negative electrode sheet pre-positioning device to the diaphragm of the laminating table, wherein the laminating device, the positive electrode sheet pre-positioning device, and the negative electrode sheet pre-positioning device are all located in the transport device; A cell cutting device, arranged at the top of the frame and located to the right of the lamination device and the positive plate pre-positioning device, for cutting the whole cell into a plurality of single cells; A material unloading robot, arranged at the top of the frame and located between the laminating device and the battery cell cutting device, for transporting the whole battery cell on the laminating table to the battery cell cutting device; The lamination device also includes a lamination translation linear module arranged at the top of the frame, a lamination mounting plate arranged at the top of the lamination translation linear module and a first hot cutting mechanism arranged at the top of the lamination mounting plate. The lamination platform is arranged at the top of the lamination mounting plate, the first hot cutting mechanism is located in front of the lamination platform, and the first hot cutting mechanism is used to cut off the diaphragm.

2. The laminating device for laminating multiple sheets at a time according to claim 1, characterized in that: The positive electrode sheet pre-positioning device and the negative electrode sheet pre-positioning device both include multiple pre-positioning bases, multiple positioning robots and multiple positioning platforms. The multiple pre-positioning bases are arranged in sequence from left to right and are connected to each other. The multiple pre-positioning bases are slidably arranged on the top of the frame. The multiple positioning robots correspond one-to-one to the multiple pre-positioning bases and are respectively arranged on the top of the corresponding pre-positioning bases. The multiple positioning platforms correspond one-to-one to the multiple positioning robots and are respectively arranged on the top of the corresponding positioning robots. The positioning robots are used to drive the corresponding positioning platforms to rotate.

3. The laminating device for laminating multiple sheets at a time according to claim 1, characterized in that: The handling device includes two handling installation platforms which are arranged opposite to each other on the left and right, an outer suction cup manipulator for a positive electrode sheet, an inner suction cup manipulator for a positive electrode sheet, an outer suction cup manipulator for a negative electrode sheet, and an inner suction cup manipulator for a negative electrode sheet. The handling installation platform is arranged at the top of the frame through a handling base, and two multi-motor linear motors are respectively arranged on the side close to the two handling installation platforms. The outer suction cup manipulator for the negative electrode sheet and the outer suction cup manipulator for the positive electrode sheet are symmetrically arranged front to back and are respectively located above the negative electrode sheet conveying line and above the positive electrode sheet conveying line. The inner suction cup manipulator for the negative electrode sheet and the inner suction cup manipulator for the positive electrode sheet are symmetrically arranged front to back and are located between the outer suction cup manipulator for the negative electrode sheet and the outer suction cup manipulator for the positive electrode sheet. The two ends of the disk manipulator and the positive electrode sheet outer suction cup manipulator are respectively connected to two multi-motor linear motors, the negative electrode sheet pre-positioning device is located below between the negative electrode sheet outer suction cup manipulator and the negative electrode sheet inner suction cup manipulator, the positive electrode sheet pre-positioning device is located below between the positive electrode sheet inner suction cup manipulator and the positive electrode sheet outer suction cup manipulator, the stacking device is located below between the negative electrode sheet inner suction cup manipulator and the positive electrode sheet inner suction cup manipulator, the diaphragm unwinding device is arranged at the top of the two conveying and mounting platforms and is located above the negative electrode sheet outer suction cup manipulator and the negative electrode sheet inner suction cup manipulator, the diaphragm pulling device is located between the negative electrode sheet inner suction cup manipulator and the positive electrode sheet inner suction cup manipulator, and the two ends of the diaphragm pulling device are respectively connected to two multi-motor linear motors.

4. The laminating device for laminating multiple sheets at a time according to claim 3, characterized in that: The negative electrode sheet external suction cup manipulator and the positive electrode sheet external suction cup manipulator each include two external suction cup lifting linear modules, an external suction cup translation linear module, and a plurality of external suction cup assemblies arranged in sequence from left to right, the two external suction cup lifting linear modules are respectively connected to two multi-motor linear motors, the two ends of the external suction cup translation linear module are respectively connected to the two external suction cup lifting linear modules, and the plurality of external suction cup assemblies are all arranged on a side of the external suction cup translation linear module away from the lamination device; The negative electrode sheet internal suction cup manipulator and the positive electrode sheet internal suction cup manipulator both include two internal suction cup lifting linear modules, an internal suction cup translation linear module, and a plurality of internal suction cup assemblies arranged in sequence from left to right, the two internal suction cup lifting linear modules are respectively connected to two multi-motor linear motors, the two ends of the internal suction cup translation linear module are respectively connected to the two internal suction cup lifting linear modules, and the plurality of internal suction cup assemblies are all arranged on the side of the internal suction cup translation linear module away from the stacking device.

5. The laminating device for laminating multiple sheets at a time according to claim 1, characterized in that: The lamination device further comprises a second heat-cutting mechanism located behind the lamination platform, the second heat-cutting mechanism being arranged at the top end of the lamination mounting plate, the first heat-cutting mechanism and the second heat-cutting mechanism being respectively used for sealing the front side and the rear side of the whole battery core; The first hot cutting mechanism and the second hot cutting mechanism each include two hot cutting bases, two hot cutting mounting plates, two hot cutting support plates, two hot cutting lifting cylinders, a diaphragm hot cutting wire and a hot cutting tensioning cylinder, the two hot cutting bases are both arranged at the top end of the stacking mounting plate, the two hot cutting mounting plates are respectively arranged at the top end of the two hot cutting bases, the two hot cutting support plates are respectively slidably arranged on one side of the two hot cutting mounting plates close to the stacking table, the two hot cutting lifting cylinders are respectively arranged on one side of the two hot cutting mounting plates close to the stacking table, the output ends of the two hot cutting lifting cylinders are respectively connected to the top ends of the two hot cutting support plates, one end and the other end of the diaphragm hot cutting wire are respectively provided with a first hot cutting block and a second hot cutting block, the first hot cutting block is arranged on one side of one of the hot cutting support plates close to the stacking table, the second hot cutting block is connected to the output end of the hot cutting tensioning cylinder, the hot cutting tensioning cylinder is arranged on the other side of the hot cutting support plate close to the stacking table, and the diaphragm hot cutting wire is located below the top end of the stacking table.

6. The laminating device for laminating multiple sheets at a time according to claim 1, characterized in that: The cell slitting device comprises a slitting base, a base linear module arranged at the top of the frame, a plurality of slitting fixtures and a slitting mechanism, wherein the slitting base is arranged at the top of the base linear module, and the plurality of slitting fixtures are arranged in sequence from left to right; The slitting fixture comprises a fixture mounting plate, a lower pressing mounting seat, an upper pressing mounting seat and two slitting lifting cylinders arranged at the top end of the slitting base, the lower pressing mounting seat is arranged at the top end of the fixture mounting plate, the top end of the lower pressing mounting seat is provided with a plurality of first air-avoiding grooves, and the plurality of first air-avoiding grooves are arranged in sequence from front to back, the upper pressing mounting seat is located above the lower pressing mounting seat and is opposite to the lower pressing mounting seat, the bottom end of the upper pressing mounting seat is provided with a plurality of second air-avoiding grooves, and the plurality of second air-avoiding grooves correspond to the plurality of first air-avoiding grooves one by one, and the two slitting lifting cylinders are respectively arranged at the top end of the fixture mounting plate, the lower pressing mounting seat is located between the two slitting lifting cylinders, and the output ends of the two slitting lifting cylinders are respectively connected to the two ends of the upper pressing mounting seat; The slitting mechanism includes two slitting translation linear modules that are arranged front and back relative to each other, two slitting lifting linear modules, a slitting mounting plate and a plurality of slitting hot-cut wires, the two slitting translation linear modules are respectively arranged at the top of the slitting base, a plurality of slitting clamps are located between the two slitting translation linear modules, the two slitting lifting linear modules are respectively arranged at the top of the two slitting translation linear modules, the slitting mounting plate is located above the plurality of slitting clamps, the two ends of the slitting mounting plate are respectively connected to the two slitting lifting linear modules, a plurality of slitting hot-cut wires are located below the slitting mounting plate and are arranged in sequence from left to right, the number of the slitting hot-cut wires is one less than the number of the slitting clamps, each slitting hot-cut wire is respectively located between two adjacent slitting clamps, and the slitting hot-cut wires are arranged at the bottom of the slitting mounting plate and are arranged in sequence from left to right. A first cutting block and a second cutting block are respectively provided at one end and the other end. The first cutting block is arranged on one side of the first cutting pillar and close to the bottom end of the first cutting pillar. The top end of the first cutting pillar is arranged at the bottom end of the cutting mounting plate. The second cutting block is arranged on one side of the second cutting pillar and close to the bottom end of the second cutting pillar. A cutting sliding block is provided on one side of the second cutting pillar at a position close to the top end of the second cutting pillar. The cutting sliding block is slidably arranged on one side of the cutting support plate. The top end of the cutting support plate is arranged at the bottom end of the cutting mounting plate. A cutting tensioning cylinder is provided on one side of the cutting support plate. The output end of the cutting tensioning cylinder is connected to the cutting sliding block. A plurality of cutting clamps are located between the first cutting pillar and the second cutting pillar.

7. The laminating device for laminating multiple sheets at a time according to claim 6, characterized in that: The feeding robot comprises a feeding base, a feeding translation linear module, a feeding lifting linear module, a feeding motor, a feeding shaft, a clamping cylinder, an upper clamping jaw group and a lower clamping jaw group, wherein the feeding translation linear module is arranged on the side of the feeding base close to the battery cell cutting device, the feeding lifting linear module is arranged on the side of the feeding translation linear module close to the battery cell cutting device, a feeding mounting seat is arranged on one side of the feeding lifting linear module, a feeding mounting plate is arranged on the side of the feeding mounting seat away from the feeding lifting linear module, the feeding motor is arranged on the top of the feeding mounting plate, the feeding shaft passes through the through hole of the feeding mounting plate, one end of the feeding shaft is connected to the output end of the feeding motor, the other end of the feeding shaft is connected to the top of the feeding top plate, the bottom end of the feeding top plate is provided with a feeding side plate, the clamping cylinder is arranged on the side of the feeding side plate away from the battery cell cutting device, and the upper clamping jaw The upper and lower jaws are arranged opposite to each other in an upper and lower direction, and the upper jaw group and the lower jaw group are located between the unloading side plate and the battery cell cutting device and below the unloading translation linear module. The upper jaw group includes an upper jaw mounting seat and a plurality of upper jaws, and the upper jaw mounting seat is connected to the output end of the jaw cylinder. The plurality of upper jaws are arranged in sequence from front to back on a side of the upper jaw mounting seat close to the battery cell cutting device. The lower jaw group includes a lower jaw mounting seat and a plurality of lower jaws, and the lower jaw mounting seat is arranged on a side of the unloading side plate close to the battery cell cutting device. The plurality of lower jaws are arranged in sequence from front to back on a side of the lower jaw mounting seat close to the battery cell cutting device and correspond to the plurality of upper jaws one by one. The first avoidance grooves of the plurality of cutting fixtures form a first avoidance channel, and each lower jaw corresponds to a first avoidance channel respectively. The second avoidance grooves of the plurality of cutting fixtures form a second avoidance channel, and each upper jaw corresponds to a second avoidance channel respectively.

8. The laminating device for laminating multiple sheets at a time according to claim 1, characterized in that: The positive electrode sheet V-angle punching mechanism and the negative electrode sheet V-angle punching mechanism both include a punching mounting frame arranged at the top of the frame, a punching die located in the punching mounting frame, and a punching lifting drive mechanism, the punching die includes an upper punching template and a lower punching template which are arranged relatively up and down, the lower punching template is arranged at the bottom of the punching mounting frame, the lower punching template and the upper punching template are connected by a telescopic rod, the front and rear sides of the bottom end of the upper punching template are respectively provided with two V-shaped cutters, the top of the lower punching template is provided with two V-shaped grooves corresponding to the two V-shaped cutters, and the two V-shaped cutters are respectively used to cooperate with the two V-shaped grooves, the punching lifting drive mechanism includes a punching motor, a punching reducer, a punching synchronous belt assembly, a punching shaft and a punching connecting rod, the top of the punching mounting frame is provided with a punching mounting seat, the punching motor is arranged on the punching reducer On the machine, the output end of the punching motor is connected with the input end of the punching reducer, and the punching reducer is arranged at one end of the punching mounting seat, and one end of the punching shaft is connected to the output end of the punching reducer through the punching synchronous belt assembly, and the other end of the punching shaft is rotatably arranged in the through hole of the punching mounting frame and is connected with a roller bearing follower, the center of the roller bearing follower is located on one side of the axis of the punching shaft, and the roller bearing follower cooperates with the rectangular hole of the punching connecting plate, and a punching mounting plate is slidably arranged on one side of the punching mounting seat, and the punching connecting plate is arranged on the side of the punching mounting plate close to the punching mounting seat, one end of the punching connecting rod is arranged at the bottom end of the punching mounting plate, and the other end of the punching connecting rod passes through the through hole at the top of the punching mounting frame and is connected to the top of the punching upper template.

9. The laminating device for laminating multiple sheets at a time according to claim 7, characterized in that: The stacking platform includes a stacking base arranged at the top of the stacking mounting plate, two stacking pallets arranged side by side in front and back, a stacking bottom plate and two filling components, the two stacking pallets are connected to each other, the bottom end of the stacking pallet is provided with two stacking support plates arranged in a front-to-back interval, the two stacking support plates are both arranged at the top of the stacking bottom plate, the bottom end of the stacking bottom plate is provided with two stacking connecting plates, the two stacking connecting plates are respectively arranged to be connected with the stacking connecting columns at the top of the stacking base, the stacking pallet is provided with a plurality of through holes running through the top and bottom ends thereof, the plurality of through holes are arranged in sequence from left to right at intervals, the plurality of through holes respectively correspond to the plurality of lower clamps of the blanking manipulator, and the two filling components respectively correspond to the two stacking pallets The finishing assembly includes a plurality of finishing blocks, a finishing mounting plate and two finishing cylinders. The plurality of finishing blocks correspond one to one with the plurality of through holes of the corresponding stack support plates. The finishing blocks cooperate with the corresponding through holes. The top of the stack support plate is provided with a plurality of avoidance grooves corresponding to the plurality of through holes, respectively. The plurality of avoidance grooves are respectively connected to the corresponding through holes. The finishing mounting plate is located between the two stack support plates of the corresponding stack support plate and between the stack bottom plate and the corresponding stack support plate. The bottom ends of the plurality of finishing blocks are respectively connected to the top ends of the finishing mounting plates. The two finishing cylinders are respectively arranged at the bottom ends of the stack bottom plates. The output ends of the finishing cylinders pass through the through holes of the stack bottom plates and are connected to the bottom ends of the finishing mounting plates.

10. The laminating device for laminating multiple sheets at a time according to claim 1, characterized in that: It also includes a gluing device, a gluing robot, a hot pressing loading robot, a hot pressing unloading robot, a hot pressing device, a QR code gluing device, a transfer robot, a testing device and an unloading conveyor line arranged on the top of the frame, the gluing robot is located to the right of the unloading robot, the gluing device is located in front of the unloading robot and the gluing robot, the gluing device is used to glue the front, rear, left and right sides of the single battery cell, the unloading robot is also used to transport multiple single battery cells on the battery cell cutting device to the gluing robot together, the gluing robot is used to transport multiple single battery cells on the unloading robot to the gluing device in sequence, the hot pressing device is located in front of the gluing device, the hot pressing loading robot is located between the gluing device and the hot pressing device, the QR code gluing device, the testing device and the unloading conveyor line are arranged from left to right in sequence. The hot pressing device is arranged again and is located in front of the hot pressing device, the hot pressing unloading robot is located on the left side of the hot pressing device and the two-dimensional code gluing device, the transfer robot is located between the two-dimensional code gluing device and the testing device, the hot pressing device is used to hot press the single battery cells, the hot pressing loading robot is used to transport the single battery cells on the gluing device to the hot pressing device, the two-dimensional code gluing device is used to apply two-dimensional code glue to the single battery cells, the testing device is used to perform Hi-pot test and thickness test on the single battery cells, the unloading conveyor line is used to transport the single battery cells to the unloading station, the hot pressing unloading robot is used to transport the single battery cells on the hot pressing device to the two-dimensional code gluing device, the transfer robot is used to transport the single battery cells on the two-dimensional code gluing device to the testing device and to transport the single battery cells on the testing device to the unloading conveyor line.

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