Full-automatic lithium battery cutting and stacking all-in-one machine

Abstract

The invention relates to the technical field of battery manufacturing equipment, and discloses a full-automatic lithium battery cutting and stacking all-in-one machine which comprises an unwinding and die cutting device, a stacking device and a hot pressing device which are sequentially arranged in a first direction, the unwinding die cutting device comprises an unwinding die cutting module and a cutting detection module so that a first material roll and a second material roll which are distributed in a high-low mode can be unfolded in the first direction and are subjected to die cutting forming to achieve side-by-side output. The lamination device comprises a plurality of lamination modules which are arranged side by side along a first direction; each lamination module comprises a lamination mechanism, and a first pole piece conveying mechanism and a second pole piece conveying mechanism which are arranged on the same side of the lamination mechanism; according to the full-automatic lithium battery cutting and stacking all-in-one machine provided by the invention, the unwinding and die cutting device, the stacking device and the hot pressing device are sequentially arranged, so that the automatic production process of the lithium battery is realized, the production efficiency is improved, and the production cost is reduced; meanwhile, all the devices are modularly designed, so that the space structure and the occupied area of the equipment are optimized, and the equipment is convenient to operate and maintain.

Description

Technical Field

[0001] The present invention belongs to the technical field of battery manufacturing equipment, and in particular relates to a fully automatic lithium battery cutting and stacking machine. Background Art

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

[0003] As we all know, in the manufacturing process of lithium batteries, the positive and negative electrodes of the battery need to be cut to the required lengths respectively, and then the battery electrodes are stacked and hot-pressed. The stacking process of lithium batteries refers to stacking the positive and negative electrodes of the battery at intervals to form a battery cell.

[0004] Therefore, in battery production equipment, the unwinding and die-cutting device is used to unwind the positive and negative electrode sheets of the coiled material separately and cut them into the required length respectively; the stacking device is used to stack the positive and negative electrode sheets of the battery into battery cells; and the hot pressing device is used to perform hot pressing testing on the stacked battery cells.

[0005] In the lithium battery production process, electrode unwinding and die-cutting and electrode lamination are two very important production processes, requiring the use of corresponding unwinding and die-cutting equipment and lamination equipment to complete these processes. Conventional unwinding and die-cutting equipment and lamination equipment are usually separate machines. The cut electrode sheets need to be transported to the lamination equipment through manual handling or assembly line conveying for lamination. The transportation process can easily cause damage to the electrode edges, and there are problems such as low automation, low production efficiency, high labor costs, and high labor intensity.

[0006] In addition, most of the lithium battery electrode unwinding and die-cutting equipment and stacking equipment on the market currently have problems such as being bulky, occupying a large area, being heavy, and being inconvenient to operate and maintain. Summary of the Invention

[0007] In order to solve the problems of low automation, low production efficiency, bulky machine, large machine footprint, heavy machine weight, and inconvenient operation and maintenance in the lithium battery cutting and stacking machine in the prior art, the present invention provides a fully automatic lithium battery cutting and stacking machine.

[0008] The technical effects to be achieved by the present invention are achieved through the following technical aspects:

[0009] In a first aspect, the present invention provides a fully automatic lithium battery cutting and stacking machine, comprising: an unwinding die-cutting device, a laminating device, and a hot pressing device sequentially arranged along a first direction;

[0010] The unwinding die-cutting device includes an unwinding die-cutting module and a cutting detection module. The unwinding die-cutting module is used to unwind the first and second material rolls with high and low distributions along a first direction and die-cut the first and second tab material strips into a plurality of independent first and second tab material strips, and output the qualified first and second tab material strips side by side to the lamination device.

[0011] The stacking device includes several stacking modules arranged side by side along a first direction, and the stacking modules include a first electrode conveying mechanism, a second electrode conveying mechanism and a stacking mechanism. The first electrode conveying mechanism and the second electrode conveying mechanism are arranged side by side and are located on the same side of the stacking mechanism. The stacking mechanism is used to stack the first electrode conveyed by the first electrode conveying mechanism and the second electrode conveyed by the second electrode conveying mechanism through the first electrode transporting mechanism, and transport the stacked battery cells to the hot pressing device for hot pressing.

[0012] In some optional implementations, the unwinding and die-cutting module includes a frame, a pole piece unwinding module, a die-cutting module, and a buffer module;

[0013] The frame has a first installation space and a second installation space distributed up and down; the pole piece unwinding module includes a first unwinding mechanism and a second unwinding mechanism, the die-cutting module includes a first die-cutting mechanism and a second die-cutting mechanism, and the cache module includes a first cache mechanism and a second cache mechanism. The first unwinding mechanism, the first die-cutting mechanism and the first cache mechanism are arranged in sequence in the first installation space along the first direction, and the second unwinding mechanism, the second die-cutting mechanism and the second cache mechanism are arranged in sequence in the second installation space along the first direction.

[0014] In some optional implementations, the unwinding die-cutting module also includes a first dust removal module and a first detection module, the first dust removal module includes a first dust removal mechanism and a second dust removal mechanism, the first detection module includes 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 installation space and located between the first die-cutting mechanism and the first cache mechanism, 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 cache mechanism.

[0015] In some optional implementations, the cutting detection module includes a tab positioning module and a tab cutting module arranged along a first direction, the tab positioning module includes a first tab positioning mechanism and a second tab positioning mechanism, the first tab positioning mechanism is arranged relative to the first tab material strip, and is used to locate the first tab position of the first tab material strip; the second tab positioning mechanism is arranged relative to the second tab material strip, and is used to locate the second tab position of the second tab material strip;

[0016] The tab cutting module includes a first cutting mechanism and a second cutting mechanism. The first cutting mechanism is arranged opposite to the first tab material strip, and is used to cut the first tab material strip into a number of independent first pole pieces according to the positioned first tab position; the second cutting mechanism is arranged opposite to the second tab material strip, and is used to cut the second tab material strip into a number of independent second pole pieces according to the positioned second tab position.

[0017] In some optional implementations, the cutting and detection module further includes a conveying module, a second detection module, and a waste discharge module, wherein the conveying module is arranged outside the tab cutting module along the first direction, and the second detection module and the waste discharge module are sequentially arranged along the conveying module;

[0018] The conveying module includes a third electrode sheet conveying mechanism and a fourth electrode sheet conveying mechanism, the third electrode sheet conveying mechanism and the fourth electrode sheet conveying mechanism are arranged side by side and in parallel, the third electrode sheet conveying mechanism is used to convey the first electrode sheet along the first direction, and the fourth electrode sheet conveying mechanism is used to convey the second electrode sheet 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 sheet conveying mechanism and is used to perform size detection and defect detection on the first electrode sheet conveyed by the third electrode sheet conveying mechanism; the fourth detection mechanism is arranged opposite to the fourth electrode sheet conveying mechanism and is used to perform size detection and defect detection on the second electrode sheet conveyed by the fourth electrode sheet conveying mechanism.

[0020] The waste discharge module is arranged in the output direction of the second detection module, and is used to remove the unqualified first pole piece and / or second pole piece detected by the second detection module.

[0021] In some optional implementations, the lamination mechanism includes:

[0022] a first pole piece loading mechanism, configured to obtain the first pole piece through the first pole piece transporting mechanism and perform position correction on the first pole piece;

[0023] a second electrode piece loading mechanism, arranged side by side with the first electrode piece loading mechanism along the first direction, for obtaining the second electrode piece through the first electrode piece transporting mechanism and performing position correction on the second electrode piece;

[0024] a stacking assembly, disposed between the first pole piece feeding mechanism and the second pole piece feeding mechanism, for stacking the first pole piece and the second pole piece;

[0025] A second electrode sheet conveying mechanism is provided above the first electrode sheet loading mechanism, the second electrode sheet loading mechanism and the stacking stage assembly, and is used for conveying the first electrode sheet and the second electrode sheet that have passed the calibration to the stacking stage assembly for stacking; and

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

[0027] In some optional implementations, the lamination mechanism further includes a pole piece detection mechanism and an NG material box, wherein the pole piece detection mechanism is provided above the first pole piece feeding mechanism and the second pole piece feeding mechanism to detect whether the first pole piece located at the first pole piece feeding mechanism and / or the second pole piece located at the second pole piece feeding mechanism are qualified products;

[0028] The NG material box is arranged on the side of the first electrode sheet loading mechanism and the second electrode sheet loading mechanism away from the first electrode sheet conveying mechanism and / or the second electrode sheet conveying mechanism along a second direction perpendicular to the first direction, and is used to obtain the unqualified first electrode sheet at the first electrode sheet loading mechanism and / or the unqualified second electrode sheet at the second electrode sheet loading mechanism through a third electrode sheet conveying mechanism.

[0029] In some optional implementations, the stacking device further includes a support bracket, which is arranged above the first electrode conveying mechanism, the second electrode conveying mechanism and the stacking mechanism along the first direction, and extends above several of the stacking modules; the first electrode transporting mechanism, the second electrode transporting mechanism, the electrode detection mechanism and the third electrode transporting mechanism are installed on the support bracket.

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

[0031] A cell buffer mechanism for temporarily storing stacked cells;

[0032] A plurality of hot pressing mechanisms, which are sequentially arranged along a second direction perpendicular to the first direction on one side of the battery cell buffer mechanism, and are used to hot press the battery cells;

[0033] A detection mechanism is arranged on the same side of the battery cell buffer mechanism and the hot pressing mechanism along a direction perpendicular to the first direction, and is used to detect the battery cells that have been hot pressed;

[0034] The battery cell transport mechanism is arranged between the battery cell buffer mechanism and the detection mechanism, and is used to transport the battery cells located at the battery cell buffer mechanism to the hot pressing mechanism for hot pressing, transport the hot pressed battery cells to the detection mechanism, and unload the battery cells that have passed the detection.

[0035] In some optional implementations, the hot pressing device further includes an NG cell collecting mechanism, which is arranged on one side of the detection mechanism along a second direction perpendicular to the first direction, and is used to place unqualified cells detected by the detection mechanism.

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

[0037] The present invention provides a fully automatic lithium battery cutting and stacking machine, which sequentially arranges a rewinding die-cutting device, a laminating device, and a hot pressing device to realize an automated production process for lithium batteries, thereby improving production efficiency and reducing production costs. At the same time, each device is modularly designed to optimize the spatial structure and floor space of the equipment, making it easier to operate, maintain, and disassemble and transport. BRIEF DESCRIPTION OF THE DRAWINGS

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

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

[0040] Figure 3 A side view of the first unwinding mechanism and the second unwinding mechanism of the unwinding and die-cutting device of the fully automatic lithium battery cutting and laminating machine provided in an embodiment of the present invention.

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

[0042] Figure 5 for Figure 2 An 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 the fully automatic lithium battery cutting and stacking machine provided in an embodiment of the present invention.

[0045] Figure 8A 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 laminating device of the fully automatic lithium battery cutting and laminating machine provided by an embodiment of the present invention from another angle.

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

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

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

[0050] Markings in the figure:

[0051] 10. Unwinding 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 mechanism;

[0057] 161. First testing agency;

[0058] 20. Cutting detection module;

[0059] 211. First tab positioning mechanism;

[0060] 221. First cutting mechanism;

[0061] 231, first impact V angle mechanism;

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

[0063] 251. The first waste discharge mechanism;

[0064] 261. Third pole piece conveying mechanism; 262. Fourth pole piece conveying mechanism;

[0065] 30. Laminated module;

[0066] 31. First pole piece conveying mechanism;

[0067] 32. Second pole piece conveying mechanism;

[0068] 33. Lamination mechanism;

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

[0070] 34. First pole piece transport mechanism;

[0071] 35. Support bracket;

[0072] 36. Unloading and conveying mechanism;

[0073] 40. Hot pressing device;

[0074] 41. Battery cell buffer mechanism;

[0075] 42. Hot pressing mechanism;

[0076] 43. Testing agency;

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

[0078] 44. Battery cell transport mechanism;

[0079] 45. NG battery cell collection mechanism;

[0080] 46. ​​Material cutting and caching mechanism. DETAILED DESCRIPTION

[0081] To make the purpose, technical solutions and advantages of the embodiments of the present invention more clear, the technical solutions in the embodiments of the present invention will be clearly and completely described below in conjunction with the accompanying drawings in the embodiments of the present invention. The described embodiments are only part of the embodiments of the present invention, not all of the embodiments.

[0082] Therefore, the following detailed description of the embodiments of the present invention provided in the accompanying drawings is not intended to limit the scope of the invention as claimed, but rather merely represents selected embodiments of the present invention. All other embodiments derived by persons of ordinary skill in the art based on the embodiments of the present invention without creative effort are also within the scope of protection of the present invention.

[0083] In order to solve the problems of the lithium battery cutting and stacking machine in the prior art, such as low degree of automation, low production efficiency, bulky machine, large machine footprint, heavy machine, inconvenient disassembly and transportation, complex structure, crowded layout of various functional modules, inconvenient operation and maintenance, and difficulty in upgrading and transformation, the embodiment of the present invention provides a fully automatic lithium battery cutting and stacking machine.

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

[0085] Among them, the unwinding and die-cutting device includes an unwinding and die-cutting module 10 and a cutting 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 the first pole tab material strip and the second pole tab material strip and then output them side by side; the cutting detection module 20 is used to cut the first pole tab material strip and the second pole tab material strip into several independent first pole sheets and second pole sheets respectively, and output the qualified first pole sheets and second pole 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. The 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 are 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 transport the stacked battery cells to the hot pressing device 40 for hot pressing.

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

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

[0089] The present embodiment provides a fully automatic lithium battery cutting and stacking machine, which sequentially arranges a rewinding die-cutting device, a laminating device, and a hot pressing device 40 to realize an automated production process for lithium batteries, thereby improving production efficiency and reducing production costs. At the same time, each device is modularly designed to optimize the spatial structure and floor space of the equipment, making it easier to operate, maintain, and disassemble and transport.

[0090] As a preferred embodiment, this embodiment optimizes the specific structures of the unwinding die-cutting module 10 and the cutting detection module 20.

[0091] like Figure 2-6 As shown, the unwinding and die-cutting module 10 includes a frame 11, a pole piece unwinding module, a die-cutting module and a buffer module.

[0092] The frame 11 has a first installation space and a second installation space distributed up and down; the pole piece 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 cache module includes a first cache mechanism 141 and a second cache mechanism. The first unwinding mechanism 121, the first die-cutting mechanism 131 and the first cache mechanism 141 are arranged in sequence in the first installation space along the first direction, and the second unwinding mechanism 122, the second die-cutting mechanism and the second cache mechanism are arranged in sequence in the second installation 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 provided in the middle of the rack 11, and the installation space of the rack 11 is divided into a first installation space and a second installation space distributed vertically by the baffle.

[0094] The first unwinding mechanism 121 unfolds the first coil into a single-layer first material 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 and forming of the first tab of the first material strip, thereby outputting the first tab material strip to the first cache mechanism 141. The second unwinding mechanism 122 unfolds the second coil into a single-layer second material strip along the first direction and outputs it to the second die-cutting mechanism. The second die-cutting mechanism completes the die-cutting and forming of the second tab of the second material strip, thereby outputting the second tab material strip to the second cache mechanism. After the first tab material strip and the second tab material strip pass through the first cache mechanism 141 and the second cache mechanism respectively, they are output side by side from the frame 11, so that the first tab material strip and the second tab material strip with high and low distributions are transported to the same height.

[0095] In this embodiment as a preferred embodiment, two first unwinding mechanisms 121 and two second unwinding mechanisms 122 are respectively provided, and 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, and the first unwinding mechanism 121 and the second unwinding mechanism 122 are staggered in the second direction perpendicular to the first direction, that is, the first unwinding mechanism 121 and the second unwinding mechanism 122 are staggered in the longitudinal direction, which is conducive to realizing loading on the same side, reducing the space required for loading and unloading, and making the spatial layout and utilization of the unwinding die-cutting device more reasonable.

[0096] At the same time, the first tab material strip and the second tab material strip are partitioned and isolated to avoid dust pollution; after passing through the cache module, the first tab material strip and the second tab material strip are arranged and output in parallel to avoid the transfer affecting the conveying position accuracy, simplifying the overall structure, making the spatial layout of the unwinding and die-cutting device more reasonable and beautiful, and occupying a smaller area; it is convenient for maintenance personnel to observe the entire unwinding process of the entire equipment, and it is easy to discover and deal with problems encountered in the unwinding process. The operating space is larger, which is convenient for manual operation adjustment and subsequent maintenance.

[0097] In this embodiment, which is a 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 respectively realize the first material strip and the second material strip being formed into the first tab material strip and the second tab material strip by laser die-cutting.

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

[0099] Therefore, the first cache mechanism 141 and the second cache mechanism respectively realize tension control, position control, etc. of the first tab material strip and the second tab material strip during the conveying process, and further realize precise control of relevant parameters of the first tab material strip and the second tab material strip during the conveying process, thereby ensuring the operating accuracy and quality of the subsequent processes of the first tab material strip and the second tab material strip.

[0100] This embodiment is a preferred embodiment, and the unwinding die-cutting module 10 also 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 cache 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 cache mechanism.

[0101] Preferably, the first tab material strip die-cut by the first die-cutting mechanism 141 first passes through the first dust removal mechanism 151 for dust removal, and then passes through the first detection mechanism 161 for defect detection, thereby ensuring detection precision and accuracy.

[0102] Preferably, the first detection mechanism 161 and the second detection mechanism have the same structure and both use a CCD detection system for detecting surface defects and tab contours of the first and second tab strips formed by laser die-cutting.

[0103] The first dust removal mechanism 151 and the second dust removal mechanism have the same structure and both use suction dust removal to remove dust attached to the first tab material strip and the second tab material strip, ensuring their surfaces are clean and avoiding dust contamination of the first tab material strip and the second tab material strip, thereby ensuring the accuracy of subsequent processing steps.

[0104] In this embodiment, the cutting detection module 20 includes a tab positioning module and a tab cutting module arranged along a first direction. The tab positioning module includes a first tab positioning mechanism 211 and a second tab positioning mechanism. The first tab positioning mechanism 211 is arranged relative to the first tab material strip, and is used to locate the first tab position of the first tab material strip to achieve positioning of the cutting of the first pole piece; the second tab positioning mechanism is arranged relative to the second tab material strip, and is used to locate the second tab position of the second tab material strip to achieve positioning of the cutting of the second pole piece.

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

[0106] Preferably, the unwinding die-cutting device also includes a V-angle punching module, which is arranged between the tab positioning module and the tab 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 arranged relative to the first tab material strip, and is used to punch a V-angle for the first pole piece according to the positioned first tab position; the second V-angle punching mechanism is arranged relative to the second tab material strip, and is used to punch a V-angle for the second pole piece according to the positioned second tab position.

[0107] In this embodiment, in view of the fact 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 and 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] The first tab positioning mechanism 211 and the second tab positioning mechanism both adopt a CCD detection system. After the first tab positioning mechanism 211 determines the position of the first tab of the first tab material strip, the first tab material strip is formed into a first pole piece at a V angle by the first V-angle punching mechanism 231, and the first tab material strip is cut into first pole pieces one by one by the first cutting mechanism 221; after the second tab positioning mechanism determines the position of the second tab of the second tab material strip, the second V-angle punching mechanism is formed into a second pole piece at a V angle by the second cutting mechanism.

[0109] Among them, the first electrode is a positive electrode, and the second electrode is a negative electrode.

[0110] In this embodiment, the cutting and detecting module 20 further includes a conveying module, a second detecting module and a waste discharge module. The conveying module is arranged outside the tab cutting module along the first direction, and the second detecting module and the waste discharge module are sequentially arranged along the conveying module.

[0111] Among them, the conveying module includes a third electrode conveying mechanism 261 and a fourth electrode conveying mechanism 262. The third electrode conveying mechanism 261 and the fourth electrode conveying mechanism 262 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 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.

[0113] The waste discharge module is arranged in the output direction of the second detection module, and is used to remove unqualified first pole pieces and / or second pole pieces detected by the second detection module.

[0114] Specifically, the third detection mechanism includes a first size detection mechanism 241, a second size detection 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 detection mechanism 241 is arranged opposite to the third electrode conveying mechanism 261, and is used to perform size detection on the first electrode conveyed by the third electrode conveying mechanism 261; the second size detection mechanism is arranged opposite to the fourth electrode conveying mechanism 262, and is used to perform size detection on 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 perform defect detection on 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 perform defect detection on the second electrode conveyed by the fourth electrode conveying mechanism 262.

[0115] Preferably, the first size detection mechanism 241 and the second size detection mechanism have the same structure and are arranged relative to each other, and the first size detection mechanism 241 and the second size detection mechanism adopt CCD detection systems, which are respectively used to realize the size detection of the first pole piece and the second pole piece to distinguish whether the first pole piece and / or the second pole piece are 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 adopt line scanning cameras. The first line scanning mechanism 242 and the second line scanning mechanism 243 are respectively located on the upper and lower sides of the first pole piece, and are used to detect whether there are defects on the upper and lower surfaces of the first pole piece. The third line scanning mechanism and the fourth line scanning mechanism are respectively located on the upper and lower sides of the second pole piece, and are used to detect whether there are defects on the upper and lower surfaces of the second pole piece.

[0117] The waste discharge module also includes a first waste discharge mechanism 251 and a second waste discharge mechanism. The first waste discharge mechanism 251 and the second waste discharge mechanism have the same structure and are arranged below or outside the conveying module. The first waste discharge mechanism 251 is arranged opposite to the third electrode conveying mechanism 261, and is used to remove and discharge the first electrode pieces that are unqualified in size and / or have defects detected by the first size detection mechanism 241, the first line scanning mechanism 242 and the second line scanning mechanism 243. The second waste discharge mechanism is arranged opposite to the fourth electrode conveying mechanism 262, and is used to remove and discharge the second electrode pieces that are unqualified in size and / or have defects 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 conveying mechanism that has passed the inspection of the third detection 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 conveying mechanism that has passed the inspection of the fourth detection mechanism to the second electrode conveying mechanism 32 for transmission.

[0119] Preferably, this embodiment optimizes the specific structure of the lamination device.

[0120] like Figure 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, and the first electrode transporting mechanism 34 is erected 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 in turn from the first electrode conveying mechanism 33 and the second electrode conveying mechanism 32 to the stacking mechanism 33 for battery cell stacking.

[0121] In this embodiment as a preferred embodiment, the stacking module 30 also includes a support bracket 35, which is arranged along the first direction and extends above several stacking modules 30, that is, several stacking modules 30 share the same support bracket 35, and the first pole piece conveying mechanisms 34 of several stacking modules 30 are all installed 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] In this embodiment, which is a preferred embodiment, the first electrode conveying mechanism 31 and the second electrode conveying mechanism 32 adopt the existing electrode conveying structure, and the specific structure thereof will not be elaborated in detail in this embodiment.

[0124] In some optional embodiments, the structure of the first electrode sheet transporting mechanism 34 can be: including two multi-axis manipulators and a suction cup assembly arranged at the output end of each multi-axis manipulator, the two multi-axis manipulators respectively suck the first electrode sheet from the first electrode sheet conveying mechanism 31 and the second electrode sheet from the second electrode sheet conveying mechanism 32 through the suction cup assembly, 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 sheet transporting mechanism 34 can also be: including a movable module that moves perpendicular to the first direction, two liftable suction cup assemblies connected to the movable module, the movable module cooperates with the suction cup assembly to respectively absorb the first electrode sheet from the first electrode sheet conveying mechanism 31, absorb the second electrode sheet from the second electrode sheet conveying mechanism 32, and transport 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 sheet transporting mechanism 34 includes but is not limited to the structure described above, as long as it can respectively suck and transport the first electrode sheet and the second electrode sheet from the first electrode sheet conveying mechanism 31 and the second electrode sheet conveying mechanism 32 to the stacking mechanism 33 to complete the stacking operation.

[0127] As a preferred embodiment, this embodiment optimizes the specific structure of the lamination mechanism 33.

[0128] Specifically, the lamination mechanism 33 includes: a first pole piece loading mechanism, a second pole piece loading mechanism, a lamination stage assembly 335 , a second pole piece conveying mechanism, and a lamination mechanism.

[0129] The first electrode piece loading mechanism is used to obtain the first electrode piece through the first electrode piece conveying mechanism 34 and perform position correction on the first electrode piece.

[0130] The second electrode piece loading mechanism is arranged side by side with the first electrode piece loading mechanism along the first direction, and is used to obtain the second electrode piece through the first electrode piece conveying mechanism 34 and perform position correction on the second electrode piece.

[0131] The stacking assembly 335 is disposed between the first pole piece loading mechanism and the second pole piece loading mechanism, and is used for stacking the first pole piece and the second pole piece.

[0132] The second electrode sheet conveying mechanism is arranged above the first electrode sheet loading mechanism, the second electrode sheet loading mechanism and the stacking assembly 335, and is used to convey the first electrode sheet and the second electrode sheet that have passed the calibration to the stacking assembly 335 for stacking.

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

[0134] In this embodiment, the structure of the second electrode sheet transporting mechanism can be: including two multi-axis robots and a suction cup assembly arranged at the output end of each multi-axis robot, the two multi-axis robots respectively pick up the corrected first electrode sheet from the first electrode sheet loading mechanism through the suction cup assembly, and pick up the corrected second electrode sheet from the second electrode sheet loading mechanism, 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 sheet transporting mechanism can also be: including a movable module moving in parallel with the first direction, two liftable suction cup assemblies connected to the movable module, the movable module cooperates with the suction cup assembly to respectively pick up the corrected first electrode sheet from the first electrode sheet loading mechanism, and pick up the corrected second electrode sheet from the second electrode sheet loading mechanism, and transport them to the stacking stage assembly 335 to complete the stacking operation on the stacking stage assembly 335.

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

[0137] In this embodiment, which is a preferred embodiment, the lamination mechanism 33 further includes a pole piece detection mechanism 336 , an NG material box, a fourth pole piece conveying mechanism and a diaphragm unwinding mechanism 339 .

[0138] The electrode piece detection mechanism 336 is arranged above the first electrode piece loading mechanism and the second electrode piece loading mechanism to detect whether the first electrode piece located at the first electrode piece loading mechanism and / or the second electrode piece located at the second electrode piece loading 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 arranged along a second direction perpendicular to the first direction on the side of the first electrode loading 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 arranged along a second direction perpendicular to the first direction on the side of the second electrode loading 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 sheet conveying mechanism is arranged above the first electrode sheet loading mechanism, the second electrode sheet loading mechanism, the first material box 337 and the second material box 338, and is used to convey the unqualified first electrode sheet at the first electrode sheet loading mechanism to the first material box 337, and to convey the unqualified second electrode sheet at the second electrode sheet loading mechanism to the second material box 338.

[0141] The diaphragm unwinding mechanism 339 is provided above the stacking stage assembly 335 and is used to stack the diaphragm between the first pole piece and the second pole piece.

[0142] Preferably, the first electrode loading mechanism includes: a first waiting station 331, a first electrode correction station 332 and a first alignment platform, the first waiting station 331 and the first electrode correction station 332 are arranged at intervals along a second direction perpendicular to the first direction; at least two electrode placement areas are provided on the first alignment platform, and the two electrode placement areas reciprocate between the first waiting station 331 and the first electrode correction station 332 with the first alignment platform.

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

[0144] The pole piece detection mechanism 336 includes several CCD components to realize quality detection of the position and appearance of the first pole piece and the second pole piece.

[0145] The structure of the fourth electrode sheet transporting mechanism can be: including two multi-axis robots and a suction cup assembly arranged at the output end of each multi-axis robot, the two multi-axis robots respectively use the suction cup assembly to suck the unqualified first electrode sheet from the first electrode sheet correction station 332 and transport it to the first material box 337, and suck the unqualified second electrode sheet from the second electrode sheet correction station 334 and transport it to the second material box 338.

[0146] In some optional embodiments, the structure of the fourth electrode sheet transporting mechanism can also be: including a movable module that moves perpendicular to the first direction, two liftable suction cup assemblies connected to the movable module, the movable module cooperates with the suction cup assembly to respectively suck up the unqualified first electrode sheet from the first electrode sheet correction station 332 and transport it to the first material box 337, and suck up the unqualified second electrode sheet from the second electrode sheet correction station 334 and transport it to the second material box 338.

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

[0148] In addition, the structure of the third electrode piece transporting mechanism may be the same as that of the fourth electrode piece transporting mechanism, which will not be elaborated in detail in this embodiment.

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

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

[0151] The electrode detection mechanism 336 detects the first electrode and the second electrode after position correction to determine whether the first electrode and the second electrode are qualified. If so, the second electrode conveying mechanism respectively conveys the first electrode and / or the second electrode that have passed the position correction from the first electrode correction station 332 and the second electrode correction station 334 to the stacking assembly 335 for stacking to complete the battery cell stacking; otherwise, the third electrode conveying mechanism conveys the first electrode and / or the second electrode that have failed the position correction 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 make the structural design space of the support bracket 35 larger, which is conducive to enhancing the structural strength of the support bracket 35 and the stability of the film, and ensuring the stacking accuracy.

[0153] At the same time, the stacking device provided in this embodiment can configure one or more stacking modules according to production needs by modularizing the stacking device. It has a simple structure and is easy to disassemble and transport. By arranging the first electrode conveying mechanism 31 and the second electrode conveying mechanism 32 on the same side of the stacking mechanism 33, the layout of the various components of the stacking module is optimized, and its floor space is optimized while facilitating operation and maintenance.

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

[0155] like Figure 12 As shown, the hot pressing device 40 includes: a battery cell buffer mechanism 41, a plurality of hot pressing mechanisms 42, a detection mechanism 43, a battery cell conveying mechanism 44, an NG battery cell collecting mechanism 45 and a blanking buffer mechanism 46.

[0156] The battery cell buffer mechanism 41 is provided at the output end of the unloading and conveying mechanism 36 for temporarily storing the stacked battery cells.

[0157] A plurality of hot pressing mechanisms 42 are sequentially arranged on one side of the battery cell buffer mechanism 41 along a second direction perpendicular to the first direction, and are used to hot press the battery cells.

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

[0159] The battery cell transport mechanism 44 is arranged between the battery cell buffer mechanism 41 and the detection mechanism 43, and is used 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 detection mechanism 43, and unload the battery cells that have passed the inspection.

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

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

[0162] The battery cell transporting mechanism 44 is provided in multiple numbers, so as 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 inspection mechanism 43, transport the battery cells that have passed the inspection to the unloading buffer mechanism 46 for unloading, and transport the battery cells that have failed the inspection to the NG battery cell collection mechanism 45 for unloading of unqualified products.

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

[0164] In this embodiment, the specific positions and layouts of the hot pressing mechanisms 42, the inspection mechanisms 43, the battery cell transport mechanisms 44, the NG battery cell collection mechanisms 45, and the unloading buffer mechanisms 46 include, but are not limited to, those described above and can be adjusted based on actual conditions. Furthermore, the number of hot pressing mechanisms 42, the type of inspection mechanisms 43, and the number of NG battery cell collection mechanisms 45 can be adjusted based on production requirements.

[0165] As a preferred embodiment, this embodiment further includes a second dust removal module, which is arranged on the outside of the unwinding die-cutting module 10. The second dust removal module includes a first dust removal fan and a second dust removal fan. The first dust removal fan and the second dust removal fan are respectively arranged opposite to the first unwinding mechanism 121 and the second unwinding mechanism 122, so as to blow and remove dust from the first material strip and the second material strip unwound by the first unwinding mechanism 121 and the second unwinding mechanism 122, respectively, further ensuring that the surfaces of the first material strip and the second material strip unwound 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 machine provided in this embodiment arranges the unwinding die-cutting device, the laminating 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 the present invention, unless otherwise expressly specified or limited, terms such as "mounted," "connected," "connect," and "fixed" should be understood broadly. For example, they may refer to fixed or detachable connections, or integration; mechanical or electrical connections; direct or indirect connections through an intermediate medium; and internal communication between two components or interaction between two components. Those skilled in the art will understand the specific meanings of the above terms in the present invention based on specific circumstances.

[0168] In the description of the present invention, it should be noted that the terms "center," "upper," "lower," "left," "right," "vertical," "horizontal," "inner," and "outer" and the like indicate positions or locations based on the positions shown in the accompanying drawings, or the positions or locations in which the inventive product is typically placed when in use. These terms are intended solely to facilitate the description of the present invention and to simplify the description, and are not intended to indicate or imply that the devices or components referred to must have a specific orientation, be constructed, or operate in a specific orientation. Therefore, they should not be construed as limitations on the present invention. Furthermore, the terms "first," "second," and "third," etc., are used solely to distinguish descriptions and should not be construed as indicating or implying relative importance.

[0169] Furthermore, terms such as "horizontal," "vertical," and "overhanging" do not necessarily imply that a component must be absolutely horizontal or overhanging, but rather that it can be slightly tilted. For example, "horizontal" simply means that its direction is more horizontal than "vertical," and does not mean that the structure must be completely horizontal, but rather that it can be slightly tilted.

[0170] In the present invention, unless otherwise expressly specified or limited, a first feature being above or below a second feature may include the first and second features being in direct contact, or may include the first and second features being in contact not directly but through another feature between them. Furthermore, a first feature being above, above, and above the second feature includes the first feature being directly above and obliquely above the second feature, or simply means that the first feature is higher in level than the second feature. A first feature being below, below, and below the second feature includes the first feature being directly below and obliquely below the second feature, or simply means that the first feature is lower in level than the second feature.

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

Claims

1. A fully automatic lithium battery cutting and stacking machine, characterized in that: include: An unwinding die-cutting device, a laminating device and a hot pressing device (40) are sequentially arranged along a first direction; The unwinding die-cutting device comprises an unwinding die-cutting module (10) and a cutting detection module (20), wherein the unwinding die-cutting module (10) is used to unfold the first and second material rolls with high and low distributions in a first direction and die-cut the first and second pole tab material strips and then output them side by side; the cutting detection module (20) is used to cut the first and second pole tab material strips into a plurality of independent first and second pole sheets, respectively, and output the qualified first and second pole sheets side by side to the lamination device; The stacking device comprises a plurality of stacking modules (30) arranged side by side along a first direction, the stacking modules (30) comprising a first electrode sheet conveying mechanism (31), a second electrode sheet conveying mechanism (32) and a stacking mechanism (33), the first electrode sheet conveying mechanism (31) and the second electrode sheet conveying mechanism (32) being arranged side by side and located on the same side of the stacking mechanism (33), the stacking mechanism (33) being used to stack the first electrode sheet conveyed by the first electrode sheet conveying mechanism (31) and the second electrode sheet conveyed by the second electrode sheet conveying mechanism (32) through a first electrode sheet transporting mechanism (34), and to transport the stacked battery cells to a hot pressing device (40) for hot pressing.

2. The fully automatic lithium battery cutting and stacking machine according to claim 1, characterized in that: The unwinding and die-cutting module (10) comprises a frame (11), a pole piece unwinding module, a die-cutting module and a buffer module; The frame (11) has a first installation space and a second installation space distributed in an upper and lower direction; the pole piece unwinding module comprises a first unwinding mechanism (121) and a second unwinding mechanism (122); the die-cutting module comprises a first die-cutting mechanism (131) and a second die-cutting mechanism; the cache module comprises a first cache mechanism (141) and a second cache mechanism; the first unwinding mechanism (121), the first die-cutting mechanism (131) and the first cache mechanism (141) are sequentially arranged in the first installation space along a first direction; and the second unwinding mechanism (122), the second die-cutting mechanism and the second cache mechanism are sequentially arranged in the second installation space along the first direction.

3. The fully automatic lithium battery cutting and stacking machine according to claim 2, characterized in that: The unwinding die-cutting module also 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 cache mechanism (141), and 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 cache mechanism.

4. The fully automatic lithium battery cutting and stacking machine according to claim 1, characterized in that: The cutting detection module (20) comprises a tab positioning module and a tab cutting module arranged along a first direction, the tab positioning module comprising a first tab positioning mechanism (211) and a second tab positioning mechanism, the first tab positioning mechanism (211) being arranged relative to the first tab material strip and used for locating a first tab position of the first tab material strip; the second tab positioning mechanism being arranged relative to the second tab material strip and used for locating a second tab position of the second tab material strip; The tab cutting module comprises a first cutting mechanism (221) and a second cutting mechanism, wherein the first cutting mechanism (221) is arranged relative to the first tab material strip, and is used to cut the first tab material strip into a plurality of independent first pole pieces according to the located first tab position; and the second cutting mechanism is arranged relative to the second tab material strip, and is used to cut the second tab material strip into a plurality of independent second pole pieces according to the located second tab position.

5. The fully automatic lithium battery cutting and stacking machine according to claim 4, characterized in that: The cutting detection module (20) further comprises a conveying module, a second detection module and a waste discharge module, wherein the conveying module is arranged outside the tab cutting module along a first direction, and the second detection module and the waste discharge module are arranged in sequence along the conveying module; The conveying module comprises a third electrode sheet conveying mechanism (261) and a fourth electrode sheet conveying mechanism (262), wherein the third electrode sheet conveying mechanism (261) and the fourth electrode sheet conveying mechanism (262) are arranged side by side and in parallel, the third electrode sheet conveying mechanism (261) is used to convey the first electrode sheet along the first direction, and the fourth electrode sheet conveying mechanism (262) is used to convey the second electrode sheet along the first direction; The second detection module comprises a third detection mechanism and a fourth detection mechanism, wherein the third detection mechanism is arranged opposite to the third electrode sheet conveying mechanism (261) and is used to perform size detection and defect detection on the first electrode sheet conveyed by the third electrode sheet conveying mechanism (261); the fourth detection mechanism is arranged opposite to the fourth electrode sheet conveying mechanism (262) and is used to perform size detection and defect detection on the second electrode sheet conveyed by the fourth electrode sheet conveying mechanism (262); The waste discharge module is arranged in the output direction of the second detection module, and is used for removing the unqualified first pole piece and / or the second pole piece detected by the second detection module.

6. The fully automatic lithium battery cutting and stacking machine according to claim 1, characterized in that: The lamination mechanism (33) comprises: a first pole piece feeding mechanism, used for obtaining the first pole piece through the first pole piece transporting mechanism (34), and performing position correction on the first pole piece; a second pole piece feeding mechanism, arranged side by side with the first pole piece feeding mechanism along the first direction, and used for obtaining the second pole piece through the first pole piece transporting mechanism (34), and performing position correction on the second pole piece; A stacking assembly (335), arranged between the first pole piece feeding mechanism and the second pole piece feeding mechanism, and used for stacking the first pole piece and the second pole piece; A second pole piece transport mechanism is disposed above the first pole piece loading mechanism, the second pole piece loading mechanism and the stacking assembly (335), and is used to transport the first pole piece and the second pole piece that have passed the calibration to the stacking assembly (335) for stacking; and A material unloading mechanism is arranged above the stacking stage assembly and is used to transport the stacked battery cells from the stacking stage assembly (335) to the hot pressing device (40).

7. The fully automatic lithium battery cutting and stacking machine according to claim 6, characterized in that: The lamination mechanism (33) further comprises a pole piece detection mechanism and an NG material box, wherein the pole piece detection mechanism is arranged above the first pole piece feeding mechanism and the second pole piece feeding mechanism to detect whether the first pole piece located at the first pole piece feeding mechanism and / or the second pole piece located at the second pole piece feeding mechanism are qualified products; The NG material box is arranged along a second direction perpendicular to the first direction on the side of the first electrode sheet loading mechanism and the second electrode sheet loading mechanism away from the first electrode sheet conveying mechanism (31) and / or the second electrode sheet conveying mechanism (32), and is used to obtain the unqualified first electrode sheet at the first electrode sheet loading mechanism and / or the unqualified second electrode sheet at the second electrode sheet loading mechanism through a third electrode sheet conveying mechanism.

8. The fully automatic lithium battery cutting and stacking machine according to claim 7, characterized in that: The lamination device further comprises a support bracket (35), wherein the support bracket (35) is arranged above the first electrode sheet conveying mechanism (31), the second electrode sheet conveying mechanism (32) and the lamination mechanism (33) along a first direction, and extends above a plurality of the lamination modules (30); the first electrode sheet transporting mechanism (34), the second electrode sheet transporting mechanism, the electrode sheet detection mechanism and the third electrode sheet transporting mechanism are mounted on the support bracket (35).

9. The fully automatic lithium battery cutting and stacking machine according to claim 1, characterized in that: The hot pressing device (40) comprises: A battery cell buffer mechanism (41) for temporarily storing the stacked battery cells; A plurality of hot pressing mechanisms (42), the plurality of hot pressing mechanisms (42) being sequentially arranged on one side of the battery cell buffer mechanism (41) along a second direction perpendicular to the first direction, and being used to hot press the battery cells; A detection mechanism (43) is arranged on the same side of the battery cell buffer mechanism (41) and the hot pressing mechanism (42) along a direction perpendicular to the first direction, and is used to detect the battery cells that have been hot pressed; The battery cell transport mechanism (44) is arranged between the battery cell buffer mechanism (41) and the detection mechanism (43), and is used 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 detection mechanism (43), and unload the battery cells that have passed the detection.

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

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