Full-automatic lithium battery cutting and folding integrated machine

Abstract

The application relates to the technical field of battery manufacturing equipment, and discloses a full-automatic lithium battery cutting and stacking integrated machine, which comprises unwinding and die-cutting devices, a stacking device and a hot-pressing device arranged in sequence along a first direction; the unwinding and die-cuting device comprises an unwinding and die-cutting module and a cutting and detecting module, so that first and second material rolls with high and low distributions are expanded and die-cut along the first direction to realize side-by-side output; the stacking device comprises a plurality of stacking modules arranged side by side along the first direction, and each stacking module comprises a stacking mechanism and first and second pole piece conveying mechanisms arranged on the same side of the stacking mechanism. The full-automatic lithium battery cutting and stacking integrated machine provided by the application sequentially arranges the unwinding and die-cutting device, the stacking device and the hot-pressing device, realizes the automatic production process of lithium batteries, improves the production efficiency, reduces the production cost, simultaneously modularly designs the devices, optimizes the space structure and the floor area of the equipment, and makes the equipment convenient to operate and maintain.

Description

TECHNICAL FIELD

[0001] The application belongs to the technical field of battery manufacturing equipment, and particularly relates to a full-automatic lithium battery cutting and stacking integrated machine. BACKGROUND

[0002] With the rapid development of society, lithium batteries have the advantages of high voltage, high energy density, high safety, low self-discharge rate and the like, and are a promising new energy source; with the further development of science and technology, people's demand for lithium batteries is increasing.

[0003] As known, in the manufacturing process of lithium batteries, the positive electrode sheet and the negative electrode sheet of the battery need to be cut into the required length respectively, and then the electrode sheet of the battery is subjected to a stacking process and a hot pressing process; the stacking process of the lithium battery refers to the interval stacking of the positive electrode sheet and the negative electrode sheet of the battery to form a battery cell.

[0004] Therefore, in the battery production equipment, the unwinding and die cutting device is used to unwind the positive electrode sheet and the negative electrode sheet of the roll material respectively, and cut them into the required length respectively; the stacking device is used to stack the positive electrode sheet and the negative electrode sheet of the battery into a battery cell; and the hot pressing device is used to hot press the stacked battery cell.

[0005] In the production process of lithium batteries, the electrode sheet unwinding and die cutting and the electrode sheet stacking are two very important production processes, and the corresponding unwinding and die cutting and stacking equipment need to be used to complete the processing process. The conventional unwinding and die cutting equipment and the stacking equipment are usually separate machines, and the cut electrode sheet needs to be transported to the stacking equipment for stacking by manual carrying or pipeline conveying, which is prone to cause edge damage of the electrode sheet in the transportation process, and has the problems of low automation degree, low production efficiency, high labor cost and high labor intensity.

[0006] In addition, most of the lithium battery electrode sheet unwinding and die cutting equipment and the stacking equipment on the market have the problems of large machine, wide machine occupation, large machine weight, inconvenient operation and maintenance and the like. SUMMARY

[0007] In order to solve the problems of low automation degree, low production efficiency, large machine, wide machine occupation, large machine weight, inconvenient operation and maintenance and the like of the lithium battery cutting and stacking integrated machine in the prior art, the application provides a full-automatic lithium battery cutting and stacking integrated machine.

[0008] The technical effects achieved by the application are realized by the following technical aspects:

[0009] In a first aspect, the application provides a full-automatic lithium battery cutting and stacking integrated machine, which comprises an unwinding and die cutting device, a stacking device and a hot pressing device arranged in sequence along a first direction.

[0010] The unwinding and die-cutting device comprises an unwinding and die-cutting module and a cutting detection module. The unwinding and die-cutting module is used to spread the first and second material rolls with high and low distribution along a first direction and die-cut the first and second tab material belts, and then output the first and second tab material belts side by side. The cutting detection module is used to cut the first and second tab material belts into a plurality of independent first and second pole pieces respectively, and output the qualified first and second pole pieces side by side to the lamination device.

[0011] The lamination device comprises a plurality of lamination modules arranged side by side along a first direction. Each lamination module comprises a first pole piece conveying mechanism, a second pole piece conveying mechanism, and a lamination mechanism. The first and second pole piece conveying mechanisms are arranged side by side and located on the same side of the lamination mechanism. The lamination mechanism is used to laminate the first pole pieces conveyed by the first pole piece conveying mechanism and the second pole pieces conveyed by the second pole piece conveying mechanism through a first pole piece conveying mechanism, and then convey the completed stacked battery cells to a hot pressing device for hot pressing.

[0012] In some optional implementations, the unwinding and die-cutting module comprises a rack, a pole piece unwinding module, a die-cutting module, and a buffer module.

[0013] The rack has a first mounting space and a second mounting space arranged in an up-down manner. The pole piece unwinding module comprises a first unwinding mechanism and a second unwinding mechanism. The die-cutting module comprises a first die-cutting mechanism and a second die-cutting mechanism. The buffer module comprises a first buffer mechanism and a second buffer mechanism. The first unwinding mechanism, the first die-cutting mechanism, and the first buffer mechanism are sequentially arranged in the first mounting space along a first direction. The second unwinding mechanism, the second die-cutting mechanism, and the second buffer mechanism are sequentially arranged in the second mounting space along the first direction.

[0014] In some optional implementations, the unwinding and die-cutting module further comprises a first dust removal module and a first detection module. The first dust removal module comprises a first dust removal mechanism and a second dust removal mechanism. The first detection module comprises a first detection mechanism and a second detection mechanism. The first dust removal mechanism and the first detection mechanism are sequentially arranged in the first mounting space and located between the first die-cutting mechanism and the first buffer mechanism. The second dust removal mechanism and the second detection mechanism are arranged in the second mounting space and located between the second die-cutting mechanism and the second buffer mechanism.

[0015] In some optional implementations, the cutting detection module includes an electrode positioning module and an electrode cutting module arranged along a first direction. The electrode positioning module includes a first electrode positioning mechanism and a second electrode positioning mechanism. The first electrode positioning mechanism is arranged opposite to the first electrode strip and is used to position the first electrode of the first electrode strip. The second electrode positioning mechanism is arranged opposite to the second electrode strip and is used to position the second electrode of the second electrode strip.

[0016] The electrode cutting module includes a first cutting mechanism and a second cutting mechanism. The first cutting mechanism is disposed opposite to the first electrode strip and is used to cut the first electrode strip into several independent first electrode pieces according to the positioned position of the first electrode. The second cutting mechanism is disposed opposite to the second electrode strip and is used to cut the second electrode strip into several independent second electrode pieces according to the positioned position of the second electrode.

[0017] In some optional implementations, the cutting and detection module further includes a conveying module, a second detection module, and a waste removal module. The conveying module is disposed on the outside of the tab cutting module along a first direction, and the second detection module and the waste removal module are disposed sequentially along the conveying module.

[0018] The conveying module includes a third electrode conveying mechanism and a fourth electrode conveying mechanism, which are arranged side by side and in parallel. The third electrode conveying mechanism is used to convey a first electrode along a first direction, and the fourth electrode conveying mechanism is used to convey a second electrode along the first direction.

[0019] The second detection module includes a third detection mechanism and a fourth detection mechanism. The third detection mechanism is arranged opposite to the third electrode conveying mechanism and is used to perform size detection and defect detection on the first electrode conveyed by the third electrode conveying mechanism. The fourth detection mechanism is arranged opposite to the fourth electrode conveying mechanism and is used to perform size detection and defect detection on the second electrode conveyed by the fourth electrode conveying mechanism.

[0020] The waste removal module is located in the output direction of the second detection module and is used to remove the first electrode and / or the second electrode that are found to be defective by the second detection module.

[0021] In some alternative implementations, the stacking mechanism includes:

[0022] The first electrode feeding mechanism is used to acquire the first electrode through the first electrode transport mechanism and to perform position correction on the first electrode.

[0023] The second electrode feeding mechanism is arranged side by side with the first electrode feeding mechanism along the first direction. It is used to obtain the second electrode through the first electrode conveying mechanism and to perform position correction on the second electrode.

[0024] A stacking assembly is disposed between the first electrode feeding mechanism and the second electrode feeding mechanism, and is used to stack the first electrode and the second electrode.

[0025] A second electrode conveying mechanism, disposed above the first electrode feeding mechanism, the second electrode feeding mechanism, and the stacking assembly, is used to convey the calibrated first and second electrodes onto the stacking assembly for stacking; and

[0026] The unloading mechanism is located above the stacking assembly and is used to transport the stacked cells from the stacking assembly to the hot pressing device.

[0027] In some optional implementations, the stacking mechanism further includes an electrode detection mechanism and an NG material box. The electrode detection mechanism is located above the first electrode feeding mechanism and the second electrode feeding mechanism to detect whether the first electrode at the first electrode feeding mechanism and / or the second electrode at the second electrode feeding mechanism are qualified products.

[0028] The NG material box is disposed along a second direction perpendicular to the first direction on the side away from the first electrode feeding mechanism and / or the second electrode feeding mechanism, and is used to obtain the unqualified first electrode at the first electrode feeding mechanism and / or the unqualified second electrode at the second electrode feeding mechanism by the third electrode handling mechanism.

[0029] In some alternative implementations, the stacking device further includes a support bracket, which is disposed above the first electrode conveying mechanism, the second electrode conveying mechanism, and the stacking mechanism along a first direction and extends above the plurality of stacking modules; the first electrode handling mechanism, the second electrode handling mechanism, the electrode detection mechanism, and the third electrode handling mechanism are mounted on the support bracket.

[0030] In some alternative implementations, the hot pressing device includes:

[0031] A cell buffer mechanism is used to temporarily store the stacked cells.

[0032] Several hot pressing mechanisms are sequentially arranged on one side of the cell buffer mechanism along a second direction perpendicular to the first direction, for hot pressing the cell;

[0033] The testing mechanism is located on the same side of the cell buffer mechanism and the hot pressing mechanism along a direction perpendicular to the first direction, and is used to test the cells after hot pressing.

[0034] The cell handling mechanism is located between the cell buffer mechanism and the testing mechanism. It is used to transport the cells located in the cell buffer mechanism to the hot pressing mechanism for hot pressing, transport the hot-pressed cells to the testing mechanism, and unload the qualified cells.

[0035] In some alternative implementations, the hot pressing device further includes an NG cell collection mechanism, which is disposed on one side of the detection mechanism along a second direction perpendicular to the first direction, for placing unqualified cells detected by the detection mechanism.

[0036] In summary, the present invention has at least the following advantages:

[0037] The present invention provides a fully automatic lithium battery cutting and stacking integrated machine, which sequentially sets up an unwinding die-cutting device, a stacking device and a hot pressing device to realize the automated production process of lithium batteries, improve production efficiency and reduce production costs; at the same time, the modular design of each device optimizes the spatial structure and floor space of the equipment, making it easy to operate, maintain and disassemble and transport. Attached Figure Description

[0038] Figure 1 This is a structural block diagram of a fully automated lithium battery cutting and stacking machine provided in an embodiment of the present invention.

[0039] Figure 2 This is a schematic diagram of the unwinding and die-cutting device of the fully automatic lithium battery cutting and stacking machine provided in an embodiment of the present invention.

[0040] Figure 3 The first unwinding mechanism and the second unwinding mechanism of the unwinding die-cutting device of the fully automatic lithium battery cutting and stacking integrated machine provided in the embodiment of the present invention are shown in the side view.

[0041] Figure 4 for Figure 2 Enlarged schematic diagram of part A.

[0042] Figure 5 for Figure 2 Enlarged schematic diagram of part B.

[0043] Figure 6 for Figure 2 Enlarged schematic diagram of part C.

[0044] Figure 7 This is a structural block diagram of the stacking device of a fully automatic lithium battery cutting and stacking machine provided in an embodiment of the present invention.

[0045] Figure 8This is a schematic diagram of the overall structure of the stacking device of the fully automatic lithium battery cutting and stacking machine provided in an embodiment of the present invention.

[0046] Figure 9 This is a schematic diagram of the overall structure of the stacking device of the fully automatic lithium battery cutting and stacking machine provided in an embodiment of the present invention from another angle.

[0047] Figure 10 This is a schematic diagram of the stacking module of the stacking device of the fully automatic lithium battery cutting and stacking machine provided in an embodiment of the present invention.

[0048] Figure 11 This is a schematic diagram of the stacking module of the stacking device of the fully automatic lithium battery cutting and stacking machine provided in an embodiment of the present invention from another angle.

[0049] Figure 12 The structural block diagram of the hot pressing device of the fully automatic lithium battery cutting and stacking integrated machine provided in the embodiment of the present invention.

[0050] Marked in the image:

[0051] 10. Unwinding and die-cutting module;

[0052] 11. Rack;

[0053] 121. First unwinding mechanism; 122. Second unwinding mechanism;

[0054] 131. First die-cutting mechanism;

[0055] 141. First cache mechanism;

[0056] 151. First dust removal unit;

[0057] 161. The first testing institution;

[0058] 20. Cutting detection module;

[0059] 211. First electrode positioning mechanism;

[0060] 221. First cutting mechanism;

[0061] 231. First punch V-angle mechanism;

[0062] 241. First dimension detection mechanism; 242. First line scanning mechanism; 243. Second line scanning mechanism;

[0063] 251. First waste discharge mechanism;

[0064] 261. Third electrode conveying mechanism; 262. Fourth electrode conveying mechanism;

[0065] 30. Stacked chip module;

[0066] 31. First electrode conveying mechanism;

[0067] 32. Second electrode conveying mechanism;

[0068] 33. Stacking mechanism;

[0069] 331. First waiting station; 332. First electrode alignment station; 333. Second waiting station; 334. Second electrode alignment station; 335. Stacking assembly; 336. Electrode inspection mechanism; 337. First material box; 338. Second material box; 339. Diaphragm unwinding mechanism;

[0070] 34. First electrode transport mechanism;

[0071] 35. Support bracket;

[0072] 36. Material feeding and conveying mechanism;

[0073] 40. Hot pressing device;

[0074] 41. Battery cell buffer mechanism;

[0075] 42. Hot pressing mechanism;

[0076] 43. Testing institutions;

[0077] 431. Appearance inspection agency; 432. Short circuit testing agency;

[0078] 44. Battery cell handling mechanism;

[0079] 45. NG cell collection mechanism;

[0080] 46. ​​Feeding buffer mechanism. Detailed Implementation

[0081] To make the objectives, technical solutions, and advantages of the embodiments of the present invention clearer, the technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. The described embodiments are some, but not all, of the embodiments of the present invention.

[0082] Therefore, the following detailed description of the embodiments of the invention provided in the accompanying drawings is not intended to limit the scope of the claimed invention, but merely to illustrate selected embodiments of the invention. All other embodiments obtained by those skilled in the art based on the embodiments of the invention without inventive effort are within the scope of protection of the invention.

[0083] In order to solve the problems of low automation, low production efficiency, large size, large footprint, heavy weight, inconvenient disassembly and transportation, complex structure, crowded layout of functional modules, inconvenient operation and maintenance, and difficulty in upgrading and transformation of existing lithium battery cutting and stacking machines, this invention provides a fully automatic lithium battery cutting and stacking machine.

[0084] like Figure 1 As shown, the fully automatic lithium battery cutting and stacking machine provided in this embodiment includes: an unwinding die-cutting device, a stacking device, and a hot pressing device 40 arranged sequentially along a first direction.

[0085] The unwinding and die-cutting device includes an unwinding and die-cutting module 10 and a cutting and detection module 20. The unwinding and die-cutting module 10 is used to unfold the first and second material rolls with high and low distributions along the first direction and die-cut them into first and second electrode tab strips, which are then output side by side. The cutting and detection module 20 is used to cut the first and second electrode tab strips into several independent first and second electrode sheets, and output the qualified first and second electrode sheets side by side to the stacking device.

[0086] The stacking device includes several stacking modules 30 arranged side by side along a first direction. Each stacking module 30 includes a first electrode conveying mechanism 31, a second electrode conveying mechanism 32, and a stacking mechanism 33. The first electrode conveying mechanism 31 and the second electrode conveying mechanism 32 are arranged side by side and located on the same side of the stacking mechanism 33. The stacking mechanism 33 is used to stack the first electrode conveyed by the first electrode conveying mechanism 31 and the second electrode conveyed by the second electrode conveying mechanism 32 through the first electrode transporting mechanism 34, and to transport the stacked cells to the hot pressing device 40 for hot pressing.

[0087] In this embodiment, several stacked modules 30 are arranged side by side along a first direction, which can be understood as follows: the first electrode conveying mechanism 31 of several stacked modules 30 is connected end to end along the first direction, the second electrode conveying mechanism 32 of several stacked modules 30 is connected end to end along the first direction, and the stacking mechanism 33 of several stacked modules 30 is located on the same side of the first electrode conveying mechanism 31 away from the second electrode conveying mechanism 32 along the first direction, or on the same side of the second electrode conveying mechanism 32 away from the first electrode conveying mechanism 31 along the first direction. That is, the stacking mechanism 33 of several stacked modules 30 is located on the same straight line along the first direction.

[0088] In addition, in this embodiment, each stacking module 30 is controlled independently, and the number of stacking modules 30 is set according to production needs. At the same time, the number of stacking modules 30 that need to work can be controlled according to the current production needs.

[0089] This embodiment provides a fully automatic lithium battery cutting and stacking integrated machine, which sequentially sets up an unwinding die-cutting device, a stacking device, and a hot pressing device 40 to realize an automated lithium battery production process, improve production efficiency, and reduce production costs. At the same time, the modular design of each device optimizes the spatial structure and floor space of the equipment, making it easy to operate, maintain, disassemble, and transport.

[0090] This embodiment is a preferred embodiment, and the specific structure of the unwinding die-cutting module 10 and the cutting detection module 20 has been optimized.

[0091] like Figures 2-6 As shown, the unwinding and die-cutting module 10 includes a frame 11, an electrode unwinding module, a die-cutting module, and a buffer module.

[0092] The frame 11 has a first mounting space and a second mounting space distributed vertically; the electrode unwinding module includes a first unwinding mechanism 121 and a second unwinding mechanism 122, the die-cutting module includes a first die-cutting mechanism 131 and a second die-cutting mechanism, and the buffer module includes a first buffer mechanism 141 and a second buffer mechanism. The first unwinding mechanism 121, the first die-cutting mechanism 131 and the first buffer mechanism 141 are sequentially arranged in the first mounting space along the first direction, and the second unwinding mechanism 122, the second die-cutting mechanism and the second buffer mechanism are sequentially arranged in the second mounting space along the first direction.

[0093] In this embodiment, the specific structure of the rack 11 can be understood as follows: the rack 11 is a frame with an installation space, and a horizontal baffle is set in the middle of the rack 11 to divide the installation space of the rack 11 into a first installation space and a second installation space distributed vertically.

[0094] The first unwinding mechanism 121 unwinds the first roll of material into a single layer of first strip along the first direction and outputs it to the first die-cutting mechanism 131. The first die-cutting mechanism 131 completes the die-cutting of the first tab of the first strip, thereby outputting the first tab strip to the first buffer mechanism 141. The second unwinding mechanism 122 unwinds the second roll of material into a single layer of second strip along the first direction and outputs it to the second die-cutting mechanism. The second die-cutting mechanism completes the die-cutting of the second tab of the second strip, thereby outputting the second tab strip to the second buffer mechanism. After the first tab strip and the second tab strip pass through the first buffer mechanism 141 and the second buffer mechanism respectively, they are output side by side from the frame 11, realizing the conveying of the first tab strip and the second tab strip with high and low distribution to the same height.

[0095] In this preferred embodiment, there are two first unwinding mechanisms 121 and two second unwinding mechanisms 122. The two first unwinding mechanisms 121 are staggered in the horizontal direction, and the two second unwinding mechanisms 122 are staggered in the horizontal direction. The first unwinding mechanisms 121 and the second unwinding mechanisms 122 are staggered in a second direction perpendicular to the first direction, that is, the first unwinding mechanisms 121 and the second unwinding mechanisms 122 are staggered in the longitudinal direction. This is beneficial for achieving feeding on the same side, reducing the space required for feeding and unloading, and making the spatial layout and utilization rate of the unwinding die-cutting device more reasonable.

[0096] Meanwhile, the first and second electrode ear tapes are separated and isolated to avoid dust pollution. After passing through the buffer module, the first and second electrode ear tapes are output in parallel, avoiding the impact of transfer on the conveying position accuracy. This simplifies the overall structure, making the spatial layout of the unwinding die-cutting device more reasonable and aesthetically pleasing, and reducing the footprint. It also makes it easier for maintenance personnel to observe the entire unwinding process of the entire machine, making it easier to identify and handle problems encountered during the unwinding process. The operating space is larger, facilitating manual operation, adjustment, and subsequent maintenance.

[0097] In this preferred embodiment, the first die-cutting mechanism 131 and the second die-cutting mechanism have the same structure and both use laser to realize the die-cutting function, so as to realize the first strip and the second strip to be die-cut into first tab strip and second tab strip respectively by laser.

[0098] In this preferred embodiment, the first buffer mechanism 141 includes at least a first correction component, a first tension control component, and a first traction component; the second buffer mechanism includes at least a second correction component, a second tension control component, and a second traction component.

[0099] Therefore, the first buffer mechanism 141 and the second buffer mechanism respectively realize the tension control and position control of the first and second pole ear material belts during the conveying process, and further realize the precise control of the relevant parameters of the first and second pole ear material belts during the conveying process, so as to ensure the operation accuracy and quality of the first and second pole ear material belts in subsequent processes.

[0100] In this preferred embodiment, the unwinding and die-cutting module 10 further includes a first dust removal module and a first detection module. The first dust removal module includes a first dust removal mechanism 151 and a second dust removal mechanism. The first detection module includes a first detection mechanism 161 and a second detection mechanism. The first dust removal mechanism 151 and the first detection mechanism 161 are sequentially arranged in the first installation space and located between the first die-cutting mechanism 131 and the first buffer mechanism 141. The second dust removal mechanism and the second detection mechanism are arranged in the second installation space and located between the second die-cutting mechanism and the second buffer mechanism.

[0101] Preferably, the first electrode ear strip, which is die-cut by the first die-cutting mechanism 141, first undergoes dust removal by the first dust removal mechanism 151, and then undergoes defect detection by the first detection mechanism 161, thus ensuring the accuracy and precision of the detection.

[0102] Preferably, the first detection mechanism 161 and the second detection mechanism have the same structure and both adopt a CCD detection system to detect defects on the surface of the first and second electrode strips after laser die-cutting, as well as the electrode outline.

[0103] The first dust removal mechanism 151 and the second dust removal mechanism have the same structure. Both adopt air suction dust removal to remove the dust attached to the first electrode ear material belt and the second electrode ear material belt, so as to keep their surfaces clean and avoid dust contamination of the first electrode ear material belt and the second electrode ear material belt, thereby ensuring the accuracy of subsequent processing.

[0104] In this embodiment, the cutting detection module 20 includes an electrode positioning module and an electrode cutting module arranged along a first direction. The electrode positioning module includes a first electrode positioning mechanism 211 and a second electrode positioning mechanism. The first electrode positioning mechanism 211 is arranged opposite to the first electrode strip and is used to position the first electrode of the first electrode strip to achieve positioning for cutting the first electrode sheet. The second electrode positioning mechanism is arranged opposite to the second electrode strip and is used to position the second electrode of the second electrode strip to achieve positioning for cutting the second electrode sheet.

[0105] The electrode cutting module includes a first cutting mechanism 221 and a second cutting mechanism. The first cutting mechanism 221 is arranged opposite to the first electrode strip and is used to cut the first electrode strip into several independent first electrode pieces according to the positioned first electrode position. The second cutting mechanism is arranged opposite to the second electrode strip and is used to cut the second electrode strip into several independent second electrode pieces according to the positioned second electrode position.

[0106] Preferably, the unwinding die-cutting device further includes a V-angle punching module, which is disposed between the electrode positioning module and the electrode cutting module. The V-angle punching module includes a first V-angle punching mechanism 231 and a second V-angle punching mechanism. The first V-angle punching mechanism 231 is disposed opposite to the first electrode strip and is used to punch a V-angle for the first electrode sheet according to the positioned position of the first electrode. The second V-angle punching mechanism is disposed opposite to the second electrode strip and is used to punch a V-angle for the second electrode sheet according to the positioned position of the second electrode.

[0107] In this embodiment, given that the first tab material strip and the second tab material strip are conveyed side by side along the first direction, in order to optimize the spatial layout of the unwinding die-cutting device, the first tab positioning mechanism 211 and the second tab positioning mechanism have the same structure and are arranged opposite to each other, the first V-angle punching mechanism 231 and the second V-angle punching mechanism have the same structure and are arranged opposite to each other, and the first cutting mechanism 221 and the second cutting mechanism have the same structure and are arranged opposite to each other.

[0108] Both the first electrode positioning mechanism 211 and the second electrode positioning mechanism adopt a CCD detection system. After the position of the first electrode strip is determined by the first electrode positioning mechanism 211, the first electrode strip is formed into a V-angle by the first V-angle punching mechanism 231, and then cut into individual first electrode sheets by the first cutting mechanism 221. After the position of the second electrode strip is determined by the second electrode positioning mechanism, the second electrode strip is formed into a V-angle by the second V-angle punching mechanism, and then cut into individual second electrode sheets by the second cutting mechanism.

[0109] The first electrode is the positive electrode, and the second electrode is the negative electrode.

[0110] In this embodiment, the cutting and detection module 20 further includes a conveying module, a second detection module, and a waste removal module. The conveying module is disposed on the outside of the tab cutting module along the first direction, and the second detection module and the waste removal module are disposed sequentially along the conveying module.

[0111] The conveying module includes a third electrode conveying mechanism 261 and a fourth electrode conveying mechanism 262, which are arranged side by side and in parallel. The third electrode conveying mechanism 261 is used to convey the first electrode along the first direction, and the fourth electrode conveying mechanism 262 is used to convey the second electrode along the first direction.

[0112] The second inspection module includes a third inspection mechanism and a fourth inspection mechanism. The third inspection mechanism is arranged opposite to the third electrode conveying mechanism 261 and is used to perform size inspection and defect inspection on the first electrode conveyed by the third electrode conveying mechanism 261. The fourth inspection mechanism is arranged opposite to the fourth electrode conveying mechanism 262 and is used to perform size inspection and defect inspection on the second electrode conveyed by the fourth electrode conveying mechanism 262.

[0113] The waste removal module is located in the output direction of the second detection module and is used to reject the unqualified first electrode and / or second electrode detected by the second detection module.

[0114] Specifically, the third inspection mechanism includes a first size inspection mechanism 241, a second size inspection mechanism, a first line scanning mechanism 242, a second line scanning mechanism 243, a third line scanning mechanism, and a fourth line scanning mechanism. The first size inspection mechanism 241 is arranged opposite to the third electrode conveying mechanism 261 and is used to inspect the size of the first electrode conveyed by the third electrode conveying mechanism 261. The second size inspection mechanism is arranged opposite to the fourth electrode conveying mechanism 262 and is used to inspect the size of the second electrode conveyed by the fourth electrode conveying mechanism 262. The first line scanning mechanism 242 and the second line scanning mechanism 243 are arranged opposite to the third electrode conveying mechanism 261 and are respectively located above and below the third electrode conveying mechanism 261, and are used to inspect the defects of the first electrode conveyed by the third electrode conveying mechanism 261. The third line scanning mechanism and the fourth line scanning mechanism are arranged opposite to the fourth electrode conveying mechanism 262 and are respectively located above and below the fourth electrode conveying mechanism 262, and are used to inspect the defects of the second electrode conveyed by the fourth electrode conveying mechanism 262.

[0115] Preferably, the first dimension detection mechanism 241 and the second dimension detection mechanism have the same structure and are arranged opposite to each other. The first dimension detection mechanism 241 and the second dimension detection mechanism adopt a CCD detection system and are used to realize the dimension detection of the first electrode and the second electrode respectively, so as to distinguish whether the first electrode and / or the second electrode is qualified.

[0116] The first line scanning mechanism 242, the second line scanning mechanism 243, the third line scanning mechanism, and the fourth line scanning mechanism have the same structure and use a line scanning camera. The first line scanning mechanism 242 and the second line scanning mechanism 243 are located on the upper and lower sides of the first electrode, respectively, and are used to detect whether there are defects on the upper and lower surfaces of the first electrode. The third line scanning mechanism and the fourth line scanning mechanism are located on the upper and lower sides of the second electrode, respectively, and are used to detect whether there are defects on the upper and lower surfaces of the second electrode.

[0117] The waste removal module also includes a first waste removal mechanism 251 and a second waste removal mechanism. The first waste removal mechanism 251 and the second waste removal mechanism have the same structure and are located below or outside the conveying module. The first waste removal mechanism 251 is arranged opposite to the third electrode conveying mechanism 261 and is used to reject and unload the first electrode that is out of size and / or defective as detected by the first size detection mechanism 241, the first line scanning mechanism 242 and the second line scanning mechanism 243. The second waste removal mechanism is arranged opposite to the fourth electrode conveying mechanism 262 and is used to reject and unload the second electrode that is out of size and / or defective as detected by the second size detection mechanism, the third line scanning mechanism and the fourth line scanning mechanism.

[0118] In this embodiment, it should be clarified that the third electrode conveying mechanism 261 is connected end-to-end with the first electrode conveying mechanism 31 to convey the first electrode that has passed the inspection of the third inspection mechanism to the first electrode conveying mechanism 31 for transmission, and the fourth electrode conveying mechanism 262 is connected end-to-end with the second electrode conveying mechanism 32 to convey the second electrode that has passed the inspection of the fourth inspection mechanism to the second electrode conveying mechanism 32 for transmission.

[0119] Preferably, the specific structure of the stacking device has been optimized in this embodiment.

[0120] like Figures 7-11 As shown, the first electrode conveying mechanism 31 and the second electrode conveying mechanism 32 of the stacking module 30 are arranged side by side and located on the same side of the stacking mechanism 33. The first electrode transporting mechanism 34 is mounted above the first electrode conveying mechanism 31, the second electrode conveying mechanism 32 and the stacking mechanism 33, and is used to transport the first electrode and the second electrode from the first electrode conveying mechanism 33 and the second electrode conveying mechanism 32 to the stacking mechanism 33 for cell stacking.

[0121] In this preferred embodiment, the lamination module 30 further includes a support bracket 35, which is arranged along a first direction and extends above the plurality of lamination modules 30. That is, the plurality of lamination modules 30 share the same support bracket 35, and the first electrode transport mechanism 34 of the plurality of lamination modules 30 is mounted on the support bracket 35.

[0122] In this embodiment, it should be clarified that the first electrode is a positive electrode and the second electrode is a negative electrode; or, the first electrode is a negative electrode and the second electrode is a positive electrode.

[0123] This embodiment is a preferred embodiment. The first electrode conveying mechanism 31 and the second electrode conveying mechanism 32 adopt existing electrode conveying structures. The specific structure will not be described in detail in this embodiment.

[0124] In some optional embodiments, the structure of the first electrode transport mechanism 34 can be: including two multi-axis manipulators and suction cup assemblies disposed at the output ends of each multi-axis manipulator. The two multi-axis manipulators respectively pick up the first electrode from the first electrode transport mechanism 31 and the second electrode from the second electrode transport mechanism 32 through the suction cup assemblies, and transport them to the stacking mechanism 33 to complete the stacking operation on the stacking mechanism 33.

[0125] In some optional embodiments, the structure of the first electrode transport mechanism 34 may also include: a movable module that moves along a direction perpendicular to the first direction, and two liftable suction cup assemblies connected to the movable module. The movable module, in cooperation with the suction cup assemblies, picks up the first electrode from the first electrode transport mechanism 31 and the second electrode from the second electrode transport mechanism 32, and transports them to the stacking mechanism 33 to complete the stacking operation on the stacking mechanism 33.

[0126] In this embodiment, the specific structure of the first electrode transport mechanism 34 includes, but is not limited to, the structure described above. As long as it can pick up and transport the first electrode and the second electrode from the first electrode transport mechanism 31 and the second electrode transport mechanism 32 respectively to the stacking mechanism 33 to complete the stacking operation, it is acceptable.

[0127] This embodiment is a preferred embodiment, and the specific structure of the stacking mechanism 33 has been optimized.

[0128] Specifically, the stacking mechanism 33 includes: a first electrode feeding mechanism, a second electrode feeding mechanism, a stacking assembly 335, a second electrode handling mechanism, and a unloading mechanism.

[0129] The first electrode feeding mechanism is used to acquire the first electrode through the first electrode transport mechanism 34 and to perform position correction on the first electrode.

[0130] The second electrode feeding mechanism is arranged side by side with the first electrode feeding mechanism along the first direction. It is used to obtain the second electrode through the first electrode transport mechanism 34 and to perform position correction on the second electrode.

[0131] The stacking assembly 335 is disposed between the first electrode feeding mechanism and the second electrode feeding mechanism for stacking the first electrode and the second electrode.

[0132] The second electrode conveying mechanism is located above the first electrode feeding mechanism, the second electrode feeding mechanism, and the stacking assembly 335, and is used to convey the calibrated first and second electrodes to the stacking assembly 335 for stacking.

[0133] The unloading mechanism includes a third electrode transport mechanism and an unloading conveyor 36. The unloading conveyor 36 is located on the side of the stacking assembly 335 away from the first electrode transport mechanism 31 and / or the second electrode transport mechanism 32. The third electrode transport mechanism is located above the stacking assembly 335 and the unloading conveyor 36 and is mounted on the support bracket 35 to transport the battery cells that have been stacked and passed inspection by the stacking assembly 335 to the unloading conveyor 36, so that the unloading conveyor 36 can transport the battery cells to the hot pressing device to complete the hot pressing operation.

[0134] In this embodiment, the structure of the second electrode handling mechanism can be as follows: it includes two multi-axis robotic arms and suction cup assemblies disposed at the output ends of each multi-axis robotic arm. The two multi-axis robotic arms respectively pick up the corrected first electrode from the first electrode loading mechanism and the corrected second electrode from the second electrode loading mechanism through the suction cup assemblies, and transport them to the stacking assembly 335 to complete the stacking operation on the stacking assembly 335.

[0135] In some optional embodiments, the structure of the second electrode conveying mechanism may also include: a moving module that moves parallel to the first direction, and two liftable suction cup assemblies connected to the moving module. The moving module, in cooperation with the suction cup assemblies, picks up the corrected first electrode from the first electrode feeding mechanism and the corrected second electrode from the second electrode feeding mechanism, and transports them to the stacking assembly 335 to complete the stacking operation on the stacking assembly 335.

[0136] In this embodiment, the specific structure of the second electrode transport mechanism includes, but is not limited to, the structure described above. As long as it can pick up and transport the corrected first electrode and the corrected second electrode to the stacking assembly 335 to complete the stacking operation, it is acceptable.

[0137] In this preferred embodiment, the stacking mechanism 33 further includes an electrode detection mechanism 336, an NG material box, a fourth electrode handling mechanism, and a diaphragm unwinding mechanism 339.

[0138] The electrode detection mechanism 336 is located above the first electrode feeding mechanism and the second electrode feeding mechanism to detect whether the first electrode at the first electrode feeding mechanism and / or the second electrode at the second electrode feeding mechanism are qualified products.

[0139] The NG material box includes a first material box 337 and a second material box 338. The first material box 337 is disposed along a second direction perpendicular to the first direction on the side of the first electrode feeding mechanism away from the first electrode conveying mechanism 31 and / or the second electrode conveying mechanism 32, and is used to place unqualified first electrodes. The second material box 338 is disposed along a second direction perpendicular to the first direction on the side of the second electrode feeding mechanism away from the first electrode conveying mechanism 31 and / or the second electrode conveying mechanism 32, and is used to place unqualified second electrodes.

[0140] The fourth electrode conveying mechanism is located above the first electrode feeding mechanism, the second electrode feeding mechanism, the first material box 337, and the second material box 338. It is used to convey the unqualified first electrode at the first electrode feeding mechanism to the first material box 337 and the unqualified second electrode at the second electrode feeding mechanism to the second material box 338.

[0141] The diaphragm unwinding mechanism 339 is located above the stacking assembly 335 and is used to stack the diaphragm between the first electrode and the second electrode.

[0142] Preferably, the first electrode feeding mechanism includes: a first waiting station 331, a first electrode calibration station 332, and a first alignment platform. The first waiting station 331 and the first electrode calibration station 332 are spaced apart along a second direction perpendicular to the first direction. The first alignment platform is provided with at least two electrode placement areas, and the two electrode placement areas reciprocate between the first waiting station 331 and the first electrode calibration station 332 with the first alignment platform.

[0143] The second electrode feeding mechanism includes a second waiting station 333, a second electrode calibration station 334, and a second alignment platform. The second waiting station 333 and the second electrode calibration station 334 are spaced apart along a second direction perpendicular to the first direction. The second alignment platform is provided with at least two electrode placement areas, and the two electrode placement areas reciprocate between the second waiting station 333 and the second electrode calibration station 334 with the second alignment platform.

[0144] The electrode inspection mechanism 336 includes several CCD components to perform quality inspection on the position and appearance of the first and second electrodes.

[0145] The structure of the fourth electrode transfer mechanism can be as follows: it includes two multi-axis robotic arms and suction cup assemblies set at the output ends of each multi-axis robotic arm. The two multi-axis robotic arms pick up the unqualified first electrode from the first electrode calibration station 332 and transfer it to the first material box 337 through the suction cup assemblies, and pick up the unqualified second electrode from the second electrode calibration station 334 and transfer it to the second material box 338.

[0146] In some optional embodiments, the structure of the fourth electrode conveying mechanism may also include: a moving module that moves perpendicular to the first direction, and two liftable suction cup assemblies connected to the moving module. The moving module, in cooperation with the suction cup assemblies, picks up unqualified first electrodes from the first electrode calibration station 332 and transports them to the first material box 337, and picks up unqualified second electrodes from the second electrode calibration station 334 and transports them to the second material box 338.

[0147] In this embodiment, the specific structure of the fourth electrode transport mechanism includes, but is not limited to, the structure described above. As long as it can pick up and transport the first electrode and the second electrode from the first electrode calibration station 332 and the second electrode calibration station 334 respectively into the first material box 337 and the second material box 338.

[0148] In addition, the structure of the third electrode transport mechanism can be the same as that of the fourth electrode transport mechanism, and this embodiment will not elaborate on it further.

[0149] In this embodiment, the working process of the stacking mechanism 33 is as follows:

[0150] The first electrode conveying mechanism 34 transports the first electrode from the first electrode conveying mechanism 31 to the electrode placement area on the first alignment platform at the first waiting station 331, and transports the second electrode from the second electrode conveying mechanism 32 to the electrode placement area on the second alignment platform at the second waiting station 333. Driven by a motion module, the first alignment platform moves the first electrode to the first electrode calibration station 332 to achieve position calibration of the first electrode. Driven by a motion module, the second alignment platform moves the second electrode to the second electrode calibration station 334 to achieve position calibration of the second electrode.

[0151] The electrode inspection mechanism 336 inspects the first and second electrodes after position correction to determine whether they are qualified. If so, the second electrode transport mechanism transports the qualified first and / or second electrodes from the first electrode correction station 332 and the second electrode correction station 334 to the stacking assembly 335 for stacking to complete the cell stacking. Otherwise, the third electrode transport mechanism transports the unqualified first and / or second electrodes from the first electrode correction station 332 and the second electrode correction station 334 to the first material box 337 and / or the second material box 338.

[0152] In addition, in this embodiment, the second electrode transport mechanism, the electrode detection mechanism 336, the diaphragm unwinding mechanism 339, the third electrode transport mechanism, and the fourth electrode transport mechanism can all be installed on the support bracket 35 to reduce the number of support brackets 35, save costs, avoid complex and messy structures, and thus allow for a larger design space for the support bracket 35, which is conducive to enhancing the structural strength and film stability of the support bracket 35 and ensuring the stacking accuracy.

[0153] Meanwhile, the lamination device provided in this embodiment can be modularized, allowing for the configuration of one or more lamination modules according to production needs. This results in a simple structure that is easy to disassemble and transport. By setting the first electrode conveying mechanism 31 and the second electrode conveying mechanism 32 on the same side of the lamination mechanism 33, the layout of each component of the lamination module is optimized, thus optimizing its footprint and facilitating operation and maintenance.

[0154] In this embodiment, the specific structure of the hot pressing device 40 has also been optimized.

[0155] like Figure 12 As shown, the hot pressing device 40 includes: a cell buffer mechanism 41, several hot pressing mechanisms 42, a detection mechanism 43, a cell transport mechanism 44, an NG cell collection mechanism 45, and a feeding buffer mechanism 46.

[0156] The cell buffer mechanism 41 is located at the output end of the unloading and conveying mechanism 36 and is used to temporarily store the stacked cells.

[0157] Several hot pressing mechanisms 42 are sequentially arranged on one side of the cell buffer mechanism 41 along a second direction perpendicular to the first direction, for hot pressing the cell.

[0158] The detection mechanism 43 is arranged on the same side of the cell buffer mechanism 41 and the hot pressing mechanism 42 along a direction perpendicular to the first direction, and is used to detect the cells after hot pressing.

[0159] The cell transport mechanism 44 is located between the cell buffer mechanism 41 and the detection mechanism 43. It is used to transport the cell located at the cell buffer mechanism 41 to the hot pressing mechanism 42 for hot pressing, transport the hot-pressed cell to the detection mechanism 43, and unload the qualified cell.

[0160] The NG cell collection mechanism 45 is arranged on one side of the detection mechanism 43 along a second direction perpendicular to the first direction, and is used to place the unqualified cells detected by the detection mechanism 43.

[0161] The feeding buffer mechanism 46 is arranged in a second direction perpendicular to the first direction on the side of the hot pressing mechanism 42 away from the cell buffer mechanism 41, and is used to temporarily store the cells that have completed hot pressing and passed the inspection by the inspection mechanism 43, so as to complete the feeding of the cells.

[0162] Multiple battery cell handling mechanisms 44 are configured to transport the battery cells located at the battery cell buffer mechanism 41 to the hot pressing mechanism 42 for hot pressing, transport the hot-pressed battery cells to the testing mechanism 43, transport the qualified battery cells to the unloading buffer mechanism 46 for unloading, and transport the unqualified battery cells to the NG battery cell collection mechanism 45 for unloading of unqualified products.

[0163] In addition, in this embodiment, the testing mechanism 43 includes an appearance testing mechanism 431 and a short circuit testing mechanism 432. The appearance testing mechanism 431 is used to detect whether there are defects in the appearance of the hot-pressed battery cell, and the short circuit testing mechanism 432 is used to detect whether there is a short circuit problem in the hot-pressed battery cell.

[0164] In this embodiment, the specific layout of the hot pressing mechanism 42, the detection mechanism 43, the cell handling mechanism 44, the NG cell collection mechanism 45, and the unloading buffer mechanism 46 includes, but is not limited to, the above-described situations, and can be adjusted according to actual conditions. Furthermore, the number of hot pressing mechanisms 42, the type of detection mechanism 43, and the number of NG cell collection mechanisms 45 can be adjusted according to production needs.

[0165] This embodiment, as a preferred embodiment, also includes a second dust removal module, which is disposed outside the unwinding die-cutting module 10. The second dust removal module includes a first dust removal fan and a second dust removal fan, which are respectively arranged opposite to the first unwinding mechanism 121 and the second unwinding mechanism 122, so as to blow dust on the first material strip and the second material strip unwinding by the first unwinding mechanism 121 and the second unwinding mechanism 122, thereby further ensuring that the surfaces of the first material strip and the second material strip unwinding by the first unwinding mechanism 121 and the second unwinding mechanism 122 are clean and tidy.

[0166] The fully automatic lithium battery cutting and stacking integrated machine provided in this embodiment sets up the unwinding die-cutting device, the stacking device and the hot pressing device 40 in sequence to realize the automated production process of lithium batteries, improve production efficiency and reduce production costs; at the same time, the modular design of each device optimizes the spatial structure and floor space of the equipment, making it easy to operate, maintain and disassemble and transport.

[0167] In this invention, unless otherwise explicitly specified and limited, the terms "installation," "connection," "linking," and "fixing," etc., should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral part; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; they can refer to the internal communication of two components or the interaction between two components. Those skilled in the art can understand the specific meaning of the above terms in this invention according to the specific circumstances.

[0168] In the description of this invention, it should be noted that the terms "center," "upper," "lower," "left," "right," "vertical," "horizontal," "inner," and "outer," etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings, or the orientation or positional relationship commonly used when the product of this invention is in use. They are only for the convenience of describing this invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of this invention. In addition, the terms "first," "second," "third," etc., are only used to distinguish descriptions and should not be construed as indicating or implying relative importance.

[0169] Furthermore, terms such as "horizontal," "vertical," and "sag" do not imply that components must be absolutely horizontal or suspended, but rather that they can be slightly tilted. For example, "horizontal" simply means that its direction is more horizontal relative to "vertical," and does not mean that the structure must be completely horizontal, but can be slightly tilted.

[0170] In this invention, unless otherwise expressly specified and limited, "above or below" a first feature may include direct contact between the first and second features, or contact between the first and second features through another feature between them. Furthermore, "above," "over," and "on" the first feature includes the first feature directly above or diagonally above the second feature, or simply indicates that the first feature is at a higher horizontal level than the second feature. "Below," "below," and "under" the first feature includes the first feature directly below or diagonally below the second feature, or simply indicates that the first feature is at a lower horizontal level than the second feature.

[0171] Although the description of the invention has been given in conjunction with the specific embodiments described above, it will be apparent to those skilled in the art that many substitutions, modifications, and variations can be made based on the foregoing. Therefore, all such substitutions, modifications, and variations are included within the spirit and scope of the appended claims.

Claims

1. A fully automatic lithium battery cutting and stacking integrated machine, characterized in that, include: The unwinding die-cutting device, the stacking device, and the hot pressing device (40) are arranged sequentially along the first direction; The unwinding and die-cutting device includes an unwinding and die-cutting module (10) and a cutting and detection module (20). The unwinding and die-cutting module (10) is used to unfold the first and second material rolls with high and low distributions along the first direction and die-cut them into first and second electrode tab strips, which are then output side by side. The cutting and detection module (20) is used to cut the first and second electrode tab strips into several independent first and second electrode sheets, and output the qualified first and second electrode sheets side by side to the stacking device. The stacking device includes several stacking modules (30) arranged side by side along a first direction. Each stacking module (30) includes a first electrode conveying mechanism (31), a second electrode conveying mechanism (32), and a stacking mechanism (33). The first electrode conveying mechanism (31) and the second electrode conveying mechanism (32) are arranged side by side and located on the same side of the stacking mechanism (33). The stacking mechanism (33) is used to stack the first electrode conveyed by the first electrode conveying mechanism (31) and the second electrode conveyed by the second electrode conveying mechanism (32) through the first electrode transporting mechanism (34), and to transport the stacked cells to the hot pressing device (40) for hot pressing. The first electrode conveying mechanism (31) of the plurality of stacked modules (30) is connected end to end along the first direction, the second electrode conveying mechanism (32) of the plurality of stacked modules (30) is connected end to end along the first direction, and the stacking mechanism (33) of the plurality of stacked modules (30) is located on the same straight line along the first direction. The unwinding and die-cutting module (10) includes a frame (11), an electrode unwinding module, a die-cutting module, and a buffer module; The frame (11) has a first installation space and a second installation space distributed vertically; the electrode unwinding module includes a first unwinding mechanism (121) and a second unwinding mechanism (122); the die-cutting module includes a first die-cutting mechanism (131) and a second die-cutting mechanism; the buffer module includes a first buffer mechanism (141) and a second buffer mechanism; the first unwinding mechanism (121), the first die-cutting mechanism (131) and the first buffer mechanism (141) are sequentially arranged in the first installation space along a first direction; the second unwinding mechanism (122), the second die-cutting mechanism and the second buffer mechanism are sequentially arranged in the second installation space along the first direction.

2. The fully automatic lithium battery cutting and stacking machine according to claim 1, characterized in that, The unwinding and die-cutting module further includes a first dust removal module and a first detection module. The first dust removal module includes a first dust removal mechanism (151) and a second dust removal mechanism. The first detection module includes a first detection mechanism (161) and a second detection mechanism. The first dust removal mechanism (151) and the first detection mechanism (161) are sequentially arranged in the first installation space and located between the first die-cutting mechanism (131) and the first buffer mechanism (141). The second dust removal mechanism and the second detection mechanism are arranged in the second installation space and located between the second die-cutting mechanism and the second buffer mechanism.

3. The fully automatic lithium battery cutting and stacking machine according to claim 1, characterized in that, The cutting detection module (20) includes an electrode positioning module and an electrode cutting module arranged along a first direction. The electrode positioning module includes a first electrode positioning mechanism (211) and a second electrode positioning mechanism. The first electrode positioning mechanism (211) is arranged opposite to the first electrode strip and is used to position the first electrode of the first electrode strip. The second electrode positioning mechanism is arranged opposite to the second electrode strip and is used to position the second electrode of the second electrode strip. The electrode cutting module includes a first cutting mechanism (221) and a second cutting mechanism. The first cutting mechanism (221) is disposed opposite to the first electrode strip and is used to cut the first electrode strip into several independent first electrode pieces according to the positioned position of the first electrode. The second cutting mechanism is disposed opposite to the second electrode strip and is used to cut the second electrode strip into several independent second electrode pieces according to the positioned position of the second electrode.

4. The fully automatic lithium battery cutting and stacking machine according to claim 3, characterized in that, The cutting and detection module (20) further includes a conveying module, a second detection module and a waste removal module. The conveying module is arranged along the first direction on the outside of the tab cutting module, and the second detection module and the waste removal module are arranged sequentially along the conveying module. The conveying module includes a third electrode conveying mechanism (261) and a fourth electrode conveying mechanism (262), which are arranged side by side and in parallel. The third electrode conveying mechanism (261) is used to convey a first electrode along a first direction, and the fourth electrode conveying mechanism (262) is used to convey a second electrode along the first direction. The second detection module includes a third detection mechanism and a fourth detection mechanism. The third detection mechanism is arranged opposite to the third electrode conveying mechanism (261) and is used to perform size detection and defect detection on the first electrode conveyed by the third electrode conveying mechanism (261). The fourth detection mechanism is arranged opposite to the fourth electrode conveying mechanism (262) and is used to perform size detection and defect detection on the second electrode conveyed by the fourth electrode conveying mechanism (262). The waste removal module is located in the output direction of the second detection module and is used to remove the first electrode and / or the second electrode that are found to be defective by the second detection module.

5. The fully automatic lithium battery cutting and stacking machine according to claim 1, characterized in that, The stacking mechanism (33) includes: The first electrode feeding mechanism is used to obtain the first electrode through the first electrode transport mechanism (34) and to perform position correction on the first electrode; The second electrode feeding mechanism is arranged side by side with the first electrode feeding mechanism along the first direction. It is used to obtain the second electrode through the first electrode transport mechanism (34) and to perform position correction on the second electrode. The stacking assembly (335) is disposed between the first electrode feeding mechanism and the second electrode feeding mechanism, and is used to stack the first electrode and the second electrode; The second electrode conveying mechanism is disposed above the first electrode feeding mechanism, the second electrode feeding mechanism, and the stacking assembly (335), and is used to convey the calibrated first electrode and the second electrode to the stacking assembly (335) for stacking; and The unloading mechanism is located above the stacking assembly and is used to transport the stacked cells from the stacking assembly (335) to the hot pressing device (40).

6. The fully automatic lithium battery cutting and stacking machine according to claim 5, characterized in that, The stacking mechanism (33) further includes an electrode detection mechanism and an NG material box. The electrode detection mechanism is located above the first electrode feeding mechanism and the second electrode feeding mechanism to detect whether the first electrode at the first electrode feeding mechanism and / or the second electrode at the second electrode feeding mechanism are qualified products. The NG material box is disposed along a second direction perpendicular to the first direction on the side away from the first electrode feeding mechanism (31) and / or the second electrode feeding mechanism (32) of the first electrode feeding mechanism and the second electrode feeding mechanism, and is used to obtain the unqualified first electrode at the first electrode feeding mechanism and / or the unqualified second electrode at the second electrode feeding mechanism by the third electrode handling mechanism.

7. The fully automatic lithium battery cutting and stacking machine according to claim 6, characterized in that, The stacking device further includes a support bracket (35), which is positioned above the first electrode conveying mechanism (31), the second electrode conveying mechanism (32), and the stacking mechanism (33) along a first direction, and extends above a plurality of the stacking modules (30); the first electrode transport mechanism (34), the second electrode transport mechanism, the electrode detection mechanism, and the third electrode transport mechanism are mounted on the support bracket (35).

8. The fully automatic lithium battery cutting and stacking machine according to claim 1, characterized in that, The hot pressing device (40) includes: A cell buffer mechanism (41) is used to temporarily store the cells that have been stacked. A plurality of hot pressing mechanisms (42) are arranged sequentially on one side of the cell buffer mechanism (41) along a second direction perpendicular to the first direction, for hot pressing the cell; The testing mechanism (43) is set on the same side of the cell buffer mechanism (41) and the hot pressing mechanism (42) along a direction perpendicular to the first direction, and is used to test the cell after hot pressing; The cell transport mechanism (44) is located between the cell buffer mechanism (41) and the detection mechanism (43). It is used to transport the cell located at the cell buffer mechanism (41) to the hot pressing mechanism (42) for hot pressing, transport the hot-pressed cell to the detection mechanism (43), and unload the qualified cell.

9. The fully automatic lithium battery cutting and stacking machine according to claim 8, characterized in that, The hot pressing device (40) also includes an NG cell collection mechanism (45), which is arranged on one side of the detection mechanism (43) along a second direction perpendicular to the first direction, for placing unqualified cells detected by the detection mechanism (43).

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