Lithium metal unwinding and flaking system

Abstract

The invention discloses a lithium metal unwinding and sheet-making system which comprises an unwinding mechanism, an unwinding deviation rectifying mechanism, a lithium metal tension detecting mechanism, an advancing deviation rectifying mechanism, an intelligent storage mechanism, a pole piece laser cutting mechanism, a main traction mechanism, a pole piece transferring mechanism, a pole piece detecting mechanism and a pole lug laser cutting mechanism. The main traction mechanism is at least used for pulling the material belt to sequentially pass through the unwinding deviation rectifying mechanism, the lithium metal tension detection mechanism, the advancing deviation rectifying mechanism and the intelligent material storage mechanism and then enter the pole piece laser cutting mechanism. The lithium metal tension detection mechanism is at least used for detecting the tension of the material belt and enabling the unwinding mechanism to adjust working parameters according to a tension detection result so as to enable the tension of the material belt to reach a set value; and the pole piece transfer mechanism is at least used for sequentially transferring the pole piece output by the pole piece laser cutting mechanism to the pole piece detection mechanism and the pole lug laser cutting mechanism.

Description

Technical Field

[0001] The invention relates to a lithium metal film making system, in particular to a lithium metal unwinding film making system, and belongs to the technical field of new energy lithium battery manufacturing. Background Art

[0002] With the global energy transformation and upgrading and the increasing carbon emission requirements, technology has higher and higher requirements for batteries. Traditional lithium-ion batteries can no longer meet the needs of various industries. The market is in urgent need of a new battery product to replace the existing lithium-ion batteries. Lithium metal batteries have high energy density, high safety, and their cycle life is also constantly improving. In the future, there is a lot of room to replace the existing lithium-ion batteries, and the market development prospects are huge.

[0003] Lithium metal is silvery white, very soft, can be easily pulled apart, and is very sticky. The minimum tension used by existing unwinding equipment is tens of N. Metallic lithium is very soft, and tens of N will tear it apart and make it impossible to unwind. In addition, the existing unwinding equipment also has large tension fluctuations, which can also cause the metal lithium to break. Therefore, the lithium-ion production process and equipment on the current market cannot completely replace the production process and equipment of lithium metal batteries. Summary of the invention

[0004] In view of the deficiencies in the prior art, the object of the present invention is to provide a lithium metal unwinding and film-making equipment that can monitor the tension of the material strip in real time, monitor whether the material strip is deviated in real time, adjust the tension of the material strip in real time, and correct the deviation in real time.

[0005] In order to achieve the above-mentioned invention object, the technical solution adopted by the present invention includes a lithium metal unwinding and film making system,

[0006] The lithium metal unwinding and film making system includes an unwinding mechanism, an unwinding correction mechanism, a lithium metal tension detection mechanism, a traveling correction mechanism, an intelligent material storage mechanism, a pole piece laser cutting mechanism, a main traction mechanism, a pole piece transfer mechanism and a pole ear laser cutting mechanism;

[0007] Wherein, the unwinding mechanism is at least used to unwind the metal lithium strip material coil to provide the metal lithium strip;

[0008] The main traction mechanism is at least used to pull the material strip through the unwinding and correcting mechanism, the lithium metal tension detection mechanism, the traveling and correcting mechanism, and the intelligent material storage mechanism in sequence, and then enter the pole piece laser cutting mechanism;

[0009] The unwinding deviation correction mechanism is at least used to monitor whether the first designated portion of the material strip unwinding by the unwinding mechanism is at a set position, and when the first designated portion of the material strip deviates from the first set position, cooperate with the unwinding mechanism to adjust the position of the material roll so that the first designated portion of the material strip reaches the first set position;

[0010] The lithium metal tension detection mechanism is at least used to detect the tension of the material strip, and to adjust the working parameters of the unwinding mechanism according to the tension detection result so that the tension of the material strip reaches a set value;

[0011] The traveling deviation correction mechanism is at least used to detect and adjust the position of the second designated portion of the material belt during traveling, so that the second designated portion of the material belt is maintained at the second set position during traveling;

[0012] The intelligent material storage mechanism is used to store at least part of the material strip;

[0013] The pole piece laser cutting mechanism is at least used to cut the received material strip to form a pole piece;

[0014] The pole piece transfer mechanism is at least used to transfer the pole piece output by the pole piece laser cutting mechanism to the pole lug laser cutting mechanism;

[0015] The pole tab laser cutting mechanism is at least used for cutting pole tabs on the pole pieces.

[0016] Furthermore, the unwinding mechanism includes a first adjustment platform, a first deviation-correcting assembly and a first power assembly; the first deviation-correcting assembly is fixed to the first adjustment platform, and the first power assembly is placed at one end of the first deviation-correcting assembly.

[0017] Furthermore, the unwinding correction mechanism includes a translation component, a non-powered roller correction component and a sensor detection component, the translation component is provided with a transverse guide rail, and limit blocks are provided at both ends of the guide rail. The non-powered roller correction component is placed above the transverse guide rail, and the non-powered roller correction component is connected to the unwinding mechanism through a correction connecting rod, and the sensor detection component is located above the non-powered roller correction component.

[0018] Furthermore, the first correction component includes an air expansion shaft, a correction motor driver, a connecting shaft, an air expansion shaft fixing plate, an air expansion shaft support plate, an adjustment plate and a universal joint. The correction motor driver is placed at the bottom of the first adjustment platform. The air expansion shaft fixing plate and the correction motor driver are connected through the adjustment plate. A second guide rail is provided above the first adjustment platform. Limit blocks are provided at both ends of the second guide rail. The air expansion shaft fixing plate is placed above the second guide rail. The air expansion shaft support plate is placed above the air expansion shaft fixing plate. The air expansion shaft is fixed to one end of the connecting shaft. The connecting shaft is fixed to the air expansion shaft support plate. The universal joint is connected to the other end of the connecting shaft.

[0019] Furthermore, the first power assembly includes a motor, a reducer, a motor fixing plate A, a motor fixing plate B, a motor fixing plate C, a driving wheel, and a driven wheel. The motor is installed on the reducer, the reducer is placed on one side of the motor fixing plate B, and the other side of the motor fixing plate B is placed on one side of the motor fixing plate A. The driving wheel is placed at the shaft end of the reducer and on the other side of the motor fixing plate A. The motor fixing plate C is placed at the bottom of the motor fixing plate A, and the driven wheel is placed at the other end of the connecting shaft of the correction assembly.

[0020] Furthermore, the unwinding and film-making system also includes one or more of a material roll thickness measuring mechanism, a static electricity removal mechanism, a tape splicing platform, a high tension detection mechanism, an iron removal mechanism, a first dust removal mechanism, a diaphragm winding mechanism, an auxiliary drive mechanism, and a second dust removal mechanism.

[0021] The material roll thickness measuring mechanism is at least used to detect the thickness of the material roll arranged on the unwinding mechanism.

[0022] The static electricity removal mechanism and the tape connection platform are sequentially arranged between the unwinding correction mechanism and the lithium metal tension detection mechanism, and the static electricity removal mechanism is at least used to remove the static charge on the material tape.

[0023] The high tension detection mechanism is arranged on one side of the lithium metal tension detection mechanism and upstream of the traveling correction mechanism, and is at least used to detect the tension of other materials. The main traction mechanism is also used to pull the material strips of other materials through the unwinding correction mechanism, the high tension detection mechanism, the traveling correction mechanism, and the intelligent material storage mechanism in sequence and then enter the pole piece laser cutting mechanism.

[0024] The iron removal mechanism is arranged between the lithium metal tension detection mechanism and the traveling correction mechanism, and is used to remove impurity metal on the material strip.

[0025] The diaphragm winding mechanism is arranged between the intelligent material storage mechanism and the pole piece laser cutting mechanism, and is at least used to separate the metallic lithium in the material strip from the diaphragm and collect the separated diaphragm.

[0026] The auxiliary driving mechanism is arranged between the intelligent material storage mechanism and the pole piece laser cutting mechanism.

[0027] Furthermore, the material roll thickness measuring mechanism is an infrared positioning material roll thickness measuring mechanism, and includes an infrared laser, a roll thickness measuring sensor, an infrared positioning roll thickness measuring base, an infrared positioning roll thickness measuring guide rod, an infrared laser fixing block and a roll thickness measuring fixing block, the infrared positioning roll thickness measuring guide rod is fixed to the infrared positioning roll thickness measuring base, the infrared laser fixing block and the roll thickness measuring fixing block are both fixed to the infrared positioning roll thickness measuring guide rod, the infrared laser is fixed to the infrared laser fixing block, the infrared laser emits red light to facilitate roll material positioning, the roll thickness measuring sensor is fixed to the roll thickness measuring fixed block, and the roll thickness measuring sensor detects the thickness of the roll material in real time during the operation of the equipment.

[0028] Furthermore, the static electricity removal mechanism includes a static electricity removal base, a static electricity removal bracket and a static electricity removal device, the static electricity removal device is placed on one side of the static electricity removal bracket, and one end of the static electricity removal bracket is placed on one side of the static electricity removal base.

[0029] Furthermore, the belt splicing platform includes an unpowered roller assembly, a cylinder belt pressing assembly and a belt splicing dust suction device, wherein the unpowered roller assembly is placed on one side of the cylinder belt pressing assembly, and the belt splicing dust suction device is placed in the middle of the cylinder belt pressing assembly.

[0030] Furthermore, the high tension detection mechanism includes a second tension roller guide rod, an over roller, a limit block and a second tension detector, the second tension roller guide rod is placed in the over roller, the limit block is placed at one end of the over roller and at one end of the second tension roller guide rod, and the other end of the second tension roller guide rod is placed in the fixing hole of the second tension detector.

[0031] Furthermore, the iron removal mechanism includes two multi-stage pull-out iron removal devices arranged relatively to each other, the pull-out iron removal device includes an iron removal module, and an iron removal fixing assembly is arranged on one side of the iron removal module, the iron removal fixing assembly includes an iron removal fixing plate and an iron removal fixing frame, the iron removal module is fixed on the iron removal fixing plate, and the iron removal fixing plate is arranged on the iron removal fixing frame.

[0032] Furthermore: the first dust removal mechanism includes a multifunctional static dust removal mechanism, the static dust removal mechanism includes a dust removal fixing seat and a second dust removal component arranged on the dust removal fixing seat, the dust removal fixing seat includes a dust removal base plate and a dust removal fixing plate fixedly connected to the dust removal base plate, and dust removal reinforcement ribs are arranged between the dust removal base plate and the dust removal fixing plate.

[0033] Furthermore, the intelligent material storage mechanism includes a fixed component, a fourth power component is arranged on the fixed component, a fixed end of the fourth power component is fixed on the fixed component, a driving end of the fourth power component is fixedly connected to a third unpowered roller component, and the third unpowered roller component moves in a straight line under the drive of the fourth power component.

[0034] Furthermore, the diaphragm winding mechanism includes a second adjustment platform, a winding assembly is arranged on the second adjustment platform, a second deviation correction assembly is arranged on one side of the second adjustment platform, a fixed end of the second deviation correction assembly is fixedly connected to the second adjustment platform, a driving end of the second deviation correction assembly is connected to the winding assembly and can drive the winding assembly to move, and a second power assembly for driving the winding assembly to wind is arranged at one end of the winding assembly.

[0035] Furthermore, the second dust removal mechanism includes a split dust suction mechanism, including a dust suction hood, a first dust suction component is arranged on one side of the dust suction hood, and a flow guide component is arranged on the side of the first dust suction hood away from the first dust suction component.

[0036] Furthermore, the auxiliary driving mechanism includes a fixed frame, on which a main driving assembly and a driven assembly are arranged, there is a gap between the main driving assembly and the driven assembly, and an adsorption pallet for adsorbing the material belt is arranged between the main driving assembly and the driven assembly, and a clamping assembly is arranged on one side of the main driving assembly or the driven assembly, and the clamping assembly is used to reduce the gap between the main driving assembly and the driven assembly, so that the main driving assembly and the driven assembly cooperate to drive the material belt to move.

[0037] Furthermore, the pole piece transfer mechanism includes a suction belt separation traction mechanism, a vacuum conveying belt line, a high-speed turntable mechanism and a duplex displacement loading tooling which are arranged in sequence according to the transmission direction of the lithium metal pole piece.

[0038] Furthermore, the suction belt detachment traction mechanism includes a support frame, on which an adsorption plate and a support plate are arranged, the support plate is arranged above the adsorption plate, and a plurality of first adsorption holes are arranged at one end of the adsorption plate away from the support plate.

[0039] Furthermore, the vacuum conveyor belt line includes a conveyor frame and a conveyor belt arranged on the conveyor frame, a continuous vacuum chamber is arranged inside one end of the conveyor frame, and an intermittent vacuum chamber is arranged inside the other end of the conveyor frame.

[0040] Furthermore, the high-speed turntable mechanism includes a cam indexer, a suction cup device and a swing arm device, the suction cup device is placed at one end of the swing arm device, and the other end of the swing arm device is placed above the cam indexer.

[0041] Furthermore, the duplex displacement loading tooling comprises a suction cup assembly and a driving assembly, and suction cup assemblies are respectively provided at both ends of the driving assembly.

[0042] Furthermore, the pole piece detection mechanism includes a CCD positioning detection mechanism, and the CCD positioning detection mechanism includes a detection platform, and one side of the detection platform is provided with an X-axis moving component for driving the detection platform to move along the X-axis direction, a Y-axis moving component for driving the detection platform to move along the Y-axis, a rotating component for driving the detection platform to rotate, and a CCD component for detecting whether there are defects in the pole piece.

[0043] Furthermore, the unwinding film-making system further includes a material waiting platform and / or a vacuum explosion-proof mechanism.

[0044] Furthermore, the material waiting platform includes a plurality of adsorption holes, a bottom plate and a support rod, the bottom plate is fixed to the support rod, and the plurality of adsorption holes are arranged above the bottom plate.

[0045] Furthermore, the vacuum explosion-proof mechanism includes a vacuum explosion-proof box, a vacuum pipe, a vacuum adsorption collection pipe and a dust removal waste collection pipe, one end of the vacuum pipe is connected to the vacuum explosion-proof box, the dust removal waste collection pipe is connected to the end of the vacuum pipe away from the vacuum explosion-proof box, and a plurality of vacuum adsorption collection pipes are provided, and a plurality of the vacuum adsorption collection pipes are connected to the vacuum pipe.

[0046] Compared with the prior art, the advantages of the present invention include:

[0047] 1) The unwinding correction mechanism provided by the present invention can monitor in real time whether the material roll is deviated, and can actively adjust the position of the material roll to make the material roll reach the predetermined position. The traveling correction mechanism can monitor in real time whether the material belt is deviated during the traveling process, and can actively adjust the position of the material belt to make the material belt reach the predetermined position. The unwinding mechanism can be adjusted in real time according to the deviation of the material belt, thereby reducing the probability of the lithium metal material belt breaking;

[0048] 2) The first tension detection mechanism provided by the present invention can monitor the tension of the material strip in real time, and the intelligent material storage mechanism can enable the unwinding mechanism to unwind continuously, and can accurately control the tension of the material strip, thereby reducing the breakage of the lithium metal material strip and improving the working efficiency of the equipment;

[0049] 3) The coil thickness measuring mechanism provided by the present invention adopts infrared laser for positioning, so that the staff can quickly and accurately install the coil to the required position. At the same time, the coil thickness measuring mechanism can monitor the real-time radius change of the coil, and can ensure that the coil maintains a constant line speed during the production process;

[0050] 4) The iron removal mechanism provided by the present invention can remove iron filings and impurities on the material belt, thereby improving the performance and reliability of the battery;

[0051] 5) The tape splicing platform mechanism provided by the present invention can splice the two ends of the broken tape after the material tape is broken. BRIEF DESCRIPTION OF THE DRAWINGS

[0052] Figure 1 It is a schematic diagram of the overall structure of a lithium metal unwinding and film making system provided by the present invention;

[0053] Figure 2 A schematic diagram of the structure of a roll thickness measuring mechanism provided in an embodiment of the present invention;

[0054] Figure 3 A schematic diagram of the structure of an unwinding mechanism and an unwinding deviation correction mechanism provided in an embodiment of the present invention;

[0055] Figure 4 A schematic diagram of the structure of a static electricity removal mechanism provided in an embodiment of the present invention;

[0056] Figure 5 A schematic structural diagram of a belt splicing platform mechanism provided in an embodiment of the present invention;

[0057] Figure 6 A schematic structural diagram of a first tension detection mechanism provided by an embodiment of the present invention;

[0058] Figure 7 A schematic diagram of the structure of an iron removal mechanism provided in an embodiment of the present invention;

[0059] Figure 8 A schematic diagram of the structure of a traveling deviation correction mechanism provided in an embodiment of the present invention;

[0060] Fig. 9 A schematic diagram of the structure of a static electricity removal dust collection mechanism provided in an embodiment of the present invention;

[0061] Fig.10 A schematic diagram of the structure of an intelligent material storage mechanism provided by an embodiment of the present invention;

[0062] Fig.11 A schematic diagram of the structure of a diaphragm material receiving mechanism provided in an embodiment of the present invention;

[0063] Fig.12 A schematic diagram of the structure of an auxiliary driving mechanism provided in an embodiment of the present invention;

[0064] Fig.13 A schematic diagram of the structure of a laser cutting device and a slitting and dust collection mechanism provided in an embodiment of the present invention;

[0065] Fig.14 A schematic structural diagram of a main traction mechanism provided by an embodiment of the present invention;

[0066] Fig.15 A schematic diagram of the structure of a suction belt separation traction mechanism provided in an embodiment of the present invention;

[0067] Fig.16A schematic diagram of the structure of a vacuum conveyor belt line provided in an embodiment of the present invention;

[0068] Fig.17 A schematic diagram of the structure of a high-speed turntable mechanism provided in an embodiment of the present invention;

[0069] Fig.18 A schematic diagram of the structure of a CCD positioning detection machine provided by an embodiment of the present invention;

[0070] Fig.19 A schematic diagram of the structure of a transfer mechanism provided by an embodiment of the present invention;

[0071] Fig. 20 A schematic diagram of the structure of a tab laser cutting mechanism provided in an embodiment of the present invention;

[0072] Fig.21 A schematic diagram of the structure of a laser processing platform provided by an embodiment of the present invention;

[0073] Fig. 22 A schematic diagram of the structure of a vacuum explosion-proof mechanism provided in an embodiment of the present invention;

[0074] Fig.23 A schematic structural diagram of a high tension detection mechanism provided in an embodiment of the present invention.

[0075] Description of reference numerals:

[0076] 1. Material roll thickness measuring mechanism; 2. Unwinding mechanism; 3. Unwinding correction mechanism; 4. Anti-static mechanism; 5. Belt connection platform mechanism; 6. First tension detection mechanism; 7. Second material winding mechanism; 8. Iron removal mechanism; 9. Travel correction mechanism; 10. Anti-static dust suction mechanism; 11. Intelligent material storage mechanism; 12. Diaphragm material receiving mechanism; 13. Auxiliary drive mechanism; 14. Laser cutting mechanism; 15. Slitting dust suction mechanism; 16. Main traction mechanism; 17. Suction belt separation traction mechanism; 18. Vacuum conveyor belt line; 19. High-speed turntable mechanism; 20. CCD positioning detection mechanism; 21. Transfer mechanism; 22. Ear laser cutting mechanism; 23. Laser processing table; 24. Material waiting platform; 25. Vacuum explosion-proof mechanism;

[0077] 1001, roll thickness measuring base; 1002, roll thickness measuring guide rod; 1003, infrared laser transmitter; 1004, infrared laser fixing block; 1005, roll thickness measuring sensor; 1006, roll thickness measuring fixing block; 2001, first adjustment platform; 2002, first deviation correction component; 2003, first power component; 3001, translation component; 3002, first non-powered roller component; 3003, sensor detection component; 4001, static elimination base; 4002, static elimination bracket; 4003, static elimination device; 5001, second non-powered roller component; 5002, belt pressing component; 5003, belt connection dust suction component; 6001, first tension roller guide rod; 6002, over roller; 6003, static elimination device; 6004, first tension roller guide rod; 6005, first tension roller guide rod; 6006, first tension roller; 6007, first tension roller; 6008, first tension roller; 6009, first tension roller; 6010, first tension roller; 6011, first tension roller; 6012, first tension roller; 6013, first tension roller; 6014, first tension roller; 6015, first tension roller; 6016, first tension roller; 6017, first tension roller; 6018, first tension roller; 6019, first tension roller; 6020, first tension roller; 6021, first tension roller; 6022, first tension roller; 6023, first tension roller; 6024, first tension roller; 6025, first tension roller; 6026, first tension roller; 6027, first tension roller; 6028, first tension roller; 6029, first tension roller; 6030, first tension roller; 6031, first tension roller 003, limit block; 6004, first tension detector; 8001, first iron removal module; 8002, first iron removal fixed plate; 8003, first iron removal fixed frame; 8004, second iron removal module; 8005, second iron removal fixed plate; 8006, second iron removal fixed frame; 9001, frame correction device; 9002, frame correction fixed plate; 9003, frame correction reinforcement rib; 9004, frame correction bottom plate; 1011, second dust removal assembly; 1012, dust removal fixed plate; 1013, dust removal reinforcement rib; 1014, dust removal bottom plate; 1101, third unpowered roller assembly; 1102, fourth power assembly; 1103, fixed assembly; 1201, first Second adjustment platform; 1202, second deviation correction component; 1203, second power component; 1301, main drive component; 1302, driven component; 1303, pole piece adsorption support plate; 1304, fixed frame; 1401, laser base; 1402, laser support rod; 1403, laser fixed block; 1404, laser; 1501, flow guide component; 1502, dust cover; 1503, first dust collection component; 1601, clamping mechanism; 1602, third drive component; 1701, first adsorption hole; 1702, support frame; 1703, support plate; 1801, continuous adsorption vacuum chamber; 1802, intermittent adsorption vacuum chamber; 1803, first dust removal component; 1804, conveying frame; 1901, cam indexer; 1902, swing arm assembly; 1903, first suction cup assembly; 2001, X-axis moving assembly; 2002, Y-axis moving assembly; 2003, rotating assembly; 2004, CCD assembly; 2101, second suction cup assembly; 2102, third power assembly; 2202, second laser; 2301, second adsorption hole; 2302, processing base plate; 2303, support rod; 2501, vacuum explosion-proof box; 2502, vacuum pipe; 2503, first vacuum adsorption collection pipe; 2504, second vacuum adsorption collection pipe; 2505, third vacuum adsorption collection pipe; 2506, dust removal waste collection pipe. DETAILED DESCRIPTION

[0078] In view of the deficiencies in the prior art, the inventor of this case has proposed the technical solution of the present invention after long-term research and extensive practice. The technical solution, its implementation process and principle will be further explained as follows.

[0079] The present invention discloses a lithium metal unwinding and film making system, comprising an unwinding mechanism 2, an unwinding correction mechanism 3, a lithium metal tension detection mechanism 6, a traveling correction mechanism 9, an intelligent material storage mechanism 11, a pole piece laser cutting mechanism 14, a main traction mechanism 16, a pole piece transfer mechanism, a pole piece detection mechanism and a pole ear laser cutting mechanism 22;

[0080] The unwinding mechanism 2 is at least used to unwind the lithium metal strip to provide the lithium metal strip; and can be adjusted in real time according to the deviation of the lithium metal strip;

[0081] The main traction mechanism 16 is at least used to pull the material strip to sequentially pass through the unwinding and correcting mechanism 3, the lithium metal tension detection mechanism 6, the traveling and correcting mechanism 9, and the intelligent material storage mechanism 11 and then enter the pole piece laser cutting mechanism 14;

[0082] The unwinding deviation correction mechanism 3 is at least used to monitor whether the first designated portion of the material strip unwound by the unwinding mechanism 2 is in a set position, and when the first designated portion of the material strip deviates from the first set position, cooperates with the unwinding mechanism 2 to adjust the position of the material roll so that the first designated portion of the material strip reaches the first set position.

[0083] The lithium metal tension detection mechanism 6 is at least used to detect the tension of the material strip, and adjust the working parameters of the unwinding mechanism 2 according to the tension detection result so that the tension of the material strip reaches a set value.

[0084] The traveling deviation correcting mechanism 9 is at least used to detect and adjust the position of the second designated portion of the material belt during traveling, so that the second designated portion of the material belt is maintained at the second set position during traveling.

[0085] The intelligent material storage mechanism 11 is used to store at least part of the material strip.

[0086] The pole piece laser cutting mechanism 14 is at least used to cut the received material strip to form a pole piece.

[0087] The pole piece transfer mechanism is at least used to transfer the pole pieces output by the pole piece laser cutting mechanism 14 to the pole piece detection mechanism and the pole tab laser cutting mechanism 22 in sequence.

[0088] The pole piece detection mechanism is at least used to detect the pole piece to determine whether the pole piece has defects.

[0089] The pole tab laser cutting mechanism 22 is at least used to cut the pole tab on the pole piece.

[0090] On the basis of the above, the unwinding mechanism 2 includes a first adjustment platform 2001, a first correction component 2002 and a first power component 2003; the first correction component 2002 is fixed to the first adjustment platform 2001, and the first power component 2003 is placed at one end of the first correction component 2002.

[0091] In some embodiments, the unwinding correction mechanism 3 includes a translation component 3001, a non-powered roller correction component 3002 and a sensor detection component 3003. The translation component 3001 is provided with a transverse guide rail, and limit blocks are provided at both ends of the guide rail. The non-powered roller correction component 3002 is placed above the transverse guide rail. The non-powered roller correction component 3002 is connected to the unwinding mechanism 2 through a correction connecting rod, and the sensor detection component 3003 is located above the non-powered roller correction component 3002.

[0092] Specifically, Figure 1 As shown, a lithium metal unwinding and film-making system includes an unwinding mechanism 2, an unwinding correction mechanism 3, an anti-static mechanism 4, a belt connection platform mechanism 5, a first tension detection mechanism 6, an iron removal mechanism 8, a traveling correction mechanism 9, an anti-static dust suction mechanism 10, an intelligent material storage mechanism 11, an auxiliary drive mechanism 13, a pole piece laser cutting mechanism 14, a main traction mechanism 16, a suction belt separation traction mechanism 17, a vacuum conveyor belt line 18, a high-speed turntable mechanism 19, a CCD positioning detection mechanism 20, a pole ear laser cutting mechanism 22 and a transfer mechanism 21, which are arranged in sequence according to the transmission direction of the lithium metal material belt. A diaphragm winding mechanism is arranged between the intelligent material taking mechanism and the auxiliary drive mechanism; a slitting dust suction mechanism is arranged below the laser cutting mechanism, and the film-making equipment also includes a vacuum explosion-proof mechanism, a laser processing table is arranged below the pole ear laser cutting mechanism, and a material waiting platform is arranged on one side of the transfer mechanism.

[0093] The reasons why the first tension detection mechanism is arranged behind the tape splicing platform mechanism are: on the one hand, the position here is close to the unwinding mechanism. When the first tension detection mechanism detects tension fluctuations, the unwinding mechanism can timely feedback and adjust the tension; on the other hand, when the tape splicing platform mechanism is working, that is, the coil is spliced, the first tension detection mechanism here can detect the tension between the tape splicing platform and the auxiliary driving mechanism to ensure the stability of the tension of the equipment.

[0094] The reasons why the static electricity removal mechanism is arranged behind the unwinding and correcting mechanism are as follows: the coil material consists of two layers, metallic lithium and diaphragm. When the coil material is peeled off, the metallic lithium will generate static electricity. The static electricity may cause the metallic lithium material to absorb impurities from the environment and produce tiny particles, thereby affecting the performance and life of the battery. Therefore, static electricity needs to be eliminated after unwinding.

[0095] A second static electricity removal mechanism is arranged in front of the auxiliary drive mechanism. The second static electricity removal mechanism is arranged in at least two groups, at least one of which is arranged in front of the separation of lithium metal and diaphragm, and at least one of which is arranged behind the separation of lithium metal and diaphragm. The reasons are as follows: in the mechanism before the auxiliary drive mechanism, the coils are both lithium metal and diaphragm layers running together, and the lithium metal and diaphragm are separated in front of the auxiliary drive mechanism. The second static electricity removal mechanism performs static electricity elimination before separation because the coils may generate static electricity after multiple rollers, ensuring a more ideal separation of lithium metal and diaphragm. After the separation of lithium metal and diaphragm, the second static electricity removal mechanism performs static electricity elimination on lithium metal because lithium metal will inevitably generate static electricity during separation. In order to ensure the performance and life of the subsequent battery, static electricity elimination is necessary here.

[0096] The reason why the iron removal mechanism 8 is arranged in front of the static dust removal mechanism 10 is to protect the static dust removal mechanism and avoid damage to the static dust removal mechanism caused by fine iron filings and impurities on the surface of the coil. Therefore, the iron removal mechanism is placed in front of the static dust removal mechanism.

[0097] In some embodiments, Figure 3 As shown, the unwinding mechanism 2 includes a first adjustment platform 2001, a first deviation correction component 2002 is arranged below the first adjustment platform 2001, a fixed end of the first deviation correction component 2002 is fixedly connected to one side of the first adjustment platform 2001, and a first power component 2003 is arranged at one end of the first deviation correction component. The present application does not limit the specific structure of the first power component 2003, as long as it can drive the material strip to unwind, specifically, the first power component 2003 includes a motor, a reducer, a motor fixing plate A, a motor fixing plate B, a motor fixing plate C, a driving wheel, and a driven wheel, the motor is installed on the reducer, the reducer is placed on one side of the motor fixing plate B, and the other side of the motor fixing plate B is placed on one side of the motor fixing plate A, the driving wheel is placed on the shaft end of the reducer and placed on the other side of the motor fixing plate A, the motor fixing plate C is placed at the bottom of the motor fixing plate A, and the driven wheel is placed at the other end of the connecting shaft of the deviation correction component.

[0098] More specifically, the first correction component 2002 includes an air expansion shaft, a correction motor driver, a connecting shaft, an air expansion shaft fixing plate, an air expansion shaft support plate, an adjustment plate and a universal joint. The correction motor driver is placed at the bottom of the first adjustment platform, the air expansion shaft fixing plate and the correction motor driver are connected through the adjustment plate, a second guide rail is provided above the first adjustment platform, and limit blocks are provided at both ends of the second guide rail. The air expansion shaft fixing plate is placed above the second guide rail, and the air expansion shaft support plate is placed above the air expansion shaft fixing plate. The air expansion shaft is fixed to one end of the connecting shaft, and the connecting shaft is fixed to the air expansion shaft support plate. The universal joint is connected to the other end of the connecting shaft.

[0099] On the basis of the above, if Figure 3 As shown, the unwinding and correcting mechanism 3 includes a translation component 3001, a guide rail is arranged above the translation component 3001, a first unpowered roller component 3002 is arranged above the translation component 3001, a slider is arranged on the first unpowered roller component 3002, the first unpowered roller component 3002 is horizontally slidably connected to the translation component 3001 through the slide rail and the slider, specifically, the first unpowered roller component 3002 includes an unpowered roller fixing seat, two unpowered rollers are rotatably connected to the unpowered roller fixing seat, namely the first unpowered roller and the second unpowered roller, a sensor detection component 3003 is arranged on one side of the first unpowered roller component 3002, and the sensor detection is used to detect whether the material belt passing through the first unpowered roller component 3002 is in a set position.

[0100] In some embodiments, the unwinding and film making system also includes one or more of a material roll thickness measuring mechanism 1, a static electricity removal mechanism 4, a tape splicing platform 5, a high tension detection mechanism 7, an iron removal mechanism, a first dust removal mechanism, a diaphragm winding mechanism 12, an auxiliary drive mechanism 13, and a second dust removal mechanism.

[0101] The material roll thickness measuring mechanism 1 is at least used to detect the thickness of the material roll arranged on the unwinding mechanism 2 .

[0102] The static electricity removal mechanism 4 and the tape connection platform 5 are sequentially arranged between the unwinding correction mechanism 3 and the lithium metal tension detection mechanism 6 , and the static electricity removal mechanism 4 is at least used to remove the static electricity on the material tape.

[0103] The high tension detection mechanism 7 is arranged on one side of the lithium metal tension detection mechanism 6 and upstream of the traveling correction mechanism 9, and is used to detect the tension of other materials, and is suitable for other material strips with high tension; the main traction mechanism 16 is also used to pull the other material strips through the unwinding correction mechanism 3, the high tension detection mechanism 7, the traveling correction mechanism 9, and the intelligent material storage mechanism 11 in sequence and then enter the pole piece laser cutting mechanism 14.

[0104] The iron removal mechanism is arranged between the lithium metal tension detection mechanism 6 and the traveling correction mechanism 9, and is used to remove the impurity metal on the material strip.

[0105] The diaphragm winding mechanism 12 is arranged between the intelligent material storage mechanism 11 and the pole piece laser cutting mechanism 14, and is at least used to separate the metallic lithium in the material strip from the diaphragm and collect the separated diaphragm.

[0106] The auxiliary driving mechanism 13 is arranged between the intelligent material storage mechanism 11 and the pole piece laser cutting mechanism 14 .

[0107] Specifically, in some embodiments, Figure 2 As shown, the roll thickness measuring mechanism 1 is an infrared positioning roll thickness measuring mechanism 1. Specifically, the infrared positioning roll thickness measuring mechanism 1 includes a roll thickness measuring base 1001, a roll thickness measuring guide rod 1002 is arranged on the roll thickness measuring base 1001, a roll thickness measuring fixed block 1006 is arranged on the roll thickness measuring upright rod, and a roll thickness measuring sensor 1005 is arranged on the roll thickness measuring fixed block 1006; the roll thickness measuring sensor 1005 can detect the thickness of the roll in real time during the operation of the equipment. A laser fixed block 1403 is arranged on the roll thickness measuring upright rod, and an infrared laser emitter 1003 is arranged on the fixed block. The infrared laser emitter 1003 emits red light to facilitate the positioning of the roll.

[0108] Before the equipment is operated, the coil fixing position is determined by manually adjusting the position of the infrared laser fixing block 1004. Before the equipment is operated, the staff needs to load the coil into the reeling and unwinding mechanism. Through the infrared laser positioning mechanism, the staff can quickly and time-savingly install the coil to the required position.

[0109] When the material pulling axis speed is constant, during the unwinding process, since the radius of the roll is constantly decreasing, in order to keep the line speed constant, the motor needs to be controlled by speed change, and the core of speed change control is to require the real-time radius change of the unwinding material. Therefore, a roll diameter measuring mechanism needs to be added to the unwinding device to monitor the real-time radius change of the roll. When the device is running, the roll thickness sensor 1005 works continuously and uninterruptedly to continuously monitor the thickness of the roll.

[0110] In some embodiments, Figure 4 As shown, the static electricity removal mechanism 4 includes a static electricity removal seat, and the static electricity removal seat includes a static electricity removal base 4001, and a static electricity removal bracket 4002 is fixedly connected to the static electricity removal base 4001, and a static electricity removal device 4003 is arranged on the static electricity removal bracket 4002; when working, the static electricity removal device 4003 continuously and uninterruptedly emits plasma wind to the surface of the coil, which is used to eliminate static electricity attached to the surface of the coil during the operation of the coil.

[0111] In some embodiments, Figure 5As shown, the belt-joining platform mechanism 5 includes a fixed box, and a second unpowered roller assembly 5001 is rotatably connected to the fixed box. A belt pressing assembly 5002 is provided on one side of the fixed box. The belt pressing assembly 5002 will press the material belt when it is necessary to join the material belt, and lift up to release the material belt after the joining is completed. Specifically, the belt pressing assembly 5002 can be a cylinder belt pressing assembly 5002 or an electrode wire rod belt pressing assembly 5002. In this embodiment, the belt pressing assembly 5002 uses a cylinder belt pressing assembly 5002, and at least two groups of the cylinder belt pressing assembly 5002 are provided. The cylinder belt pressing assembly 5002 includes a pressure rod and a cylinder that drives the pressure rod to move up and down. The fixed end of the cylinder is fixed in the fixed box, and the driving end of the cylinder is fixedly connected to the pressure rod. The pressure rod can be pressed down to be flush with the upper end surface of the fixed box under the drive of the cylinder. The fixed box is provided with a belt-jointing dust suction component 5003, and the belt-jointing dust suction component 5003 is used to suck away dust on the material belt.

[0112] Since the single layer thickness of lithium battery coils is very small, measured in microns. During the automated operation of the equipment, the tension of the coiled material is constantly changing, and there is a possibility of a sudden increase or decrease in tension, which poses a risk of tape breakage. After the tape breaks, the two ends of the broken tape can be joined by gluing on the tape splicing platform mechanism. At the same time, the total length of different coils is inconsistent. If one of the coils is used up and the other coils are not used up, the used coil can be cut at the tape splicing platform mechanism, and then a new coil can be connected, and the new coil can be joined with the old coil by gluing.

[0113] In some embodiments, the high tension detection mechanism 7 includes a second tension roller guide rod 7001, a roller 7002, a limit block 7003 and a second tension detector 7004, the second tension roller guide rod 7001 is placed in the roller 7002, the limit block 7003 is placed at one end of the roller 7002 and at one end of the second tension roller guide rod 7001, and the other end of the second tension roller guide rod 7001 is placed in the fixing hole of the second tension detector 7004.

[0114] In some embodiments, the iron removal mechanism includes two multi-stage pull-out iron removal devices 8 arranged opposite to each other, specifically, Figure 7As shown, the iron removal mechanism 8 includes a first iron removal module 8001 and a second iron removal module 8004, and there is a gap between the first iron removal module 8001 and the second iron removal module 8004 for the feeding belt to pass through; a first iron removal fixing assembly is fixedly connected to one side of the first iron removal module 8001, and the first iron removal fixing assembly includes a first iron removal fixing plate and a first iron removal fixing frame 8003, the first iron removal module is fixed on the first iron removal fixing plate 8002, and the first iron removal fixing plate 8002 is fixed in the first iron removal fixing frame 8003; a second iron removal fixing assembly is arranged on one side of the second iron removal module 8004, and the second iron removal fixing assembly includes a second iron removal fixing plate 8005 and a second iron removal fixing frame 8006, the second iron removal module 8004 is fixed on the second iron removal fixing plate 8005, and the second iron removal fixing plate 8005 is fixed on the second iron removal fixing frame 8006.

[0115] The presence of iron filings and impurities can affect the electrochemical properties of the battery, leading to problems such as decreased battery capacity and shortened cycle life. The iron removal mechanism of the present invention can remove iron filings and impurities during the production process of lithium batteries, thereby improving the performance and reliability of the battery. At the same time, the iron removal mechanism can ensure the normal operation of production equipment during the production process of new energy lithium batteries. During the production process, iron filings and impurities will be deposited inside the production equipment, causing equipment failure and damage. The use of an iron removal device can avoid the occurrence of these problems, ensuring the normal operation of production equipment and improving production efficiency. Furthermore, the iron removal mechanism can improve production efficiency and reduce costs during the production process of new energy lithium batteries. The use of an iron removal device can reduce downtime and maintenance costs during the production process, improve production efficiency and reduce production costs. In addition, the use of an iron removal device can reduce the scrap rate and improve the quality and market competitiveness of products.

[0116] In some embodiments, Figure 6 As shown, the first tension detection mechanism 6 includes a first tension detector 6004, on which a first tension roller guide rod 6001 is arranged, and a roller 6002 is sleeved on the outer surface of the first tension roller guide rod 6001; a limit block 6003 is arranged at one end of the first tension roller guide rod 6001 away from the first tension detector 6004, and the limit block 6003 is located at one end of the roller 6002 away from the first tension detector 6004. Working principle: the lithium metal strip is above the roller 6002 and contacts the roller 6002, the lithium metal strip is tensioned, the roller 6002 is subjected to pressure, the first tension detector 6004 can detect the corresponding pressure, and feed the detected pressure back to the unwinding mechanism 2, so that the unwinding mechanism 2 makes corresponding adjustments to adjust the tension of the lithium metal strip to the set value.

[0117] On the basis of the above, if Figure 8As shown, the traveling correction mechanism 9 includes a frame correction fixing frame and a frame correction component arranged on the frame correction fixing frame, the frame correction component includes a connecting seat, at least two non-powered rollers are rotatably connected to the connecting seat, and a correction sensor is also arranged on the connecting seat. A second driving component for driving the connecting seat to move is arranged on one side of the connecting seat, and the second driving component can be a cylinder or a screw module. When working, the correction sensor of the frame correction device 9001 detects whether the edge of the material belt is in a set position. If it is not in the set position, the second driving component drives the connecting seat to move and thereby drives the non-powered roller to move for correction. The frame correction fixing frame includes a frame correction bottom plate 9004, a frame correction fixing plate 9002, and a frame correction reinforcement rib 9003 arranged between the frame correction bottom plate 9004 and the frame correction fixing plate 9002.

[0118] In some embodiments, the first dust removal mechanism includes a multifunctional static dust removal mechanism 10, specifically, Fig. 9 As shown, the electrostatic dust removal mechanism 10 includes a dust removal fixed seat and a second dust removal component 1011 arranged on the dust removal fixed seat, the dust removal fixed seat includes a dust removal base plate 1014 and a dust removal fixed plate 1012 fixedly connected to the dust removal base plate 1014, and dust removal reinforcement ribs 1013 are arranged between the dust removal base plate 1014 and the dust removal fixed plate 1012.

[0119] In some embodiments, Fig.10 As shown, the intelligent material storage mechanism 11 includes a fixed component 1103, on which a fourth power component 1102 is arranged, and the fourth power component 1102 is used to drive the third non-powered roller component 1101 to perform linear motion, and the fourth power component 1102 can be a cylinder or a screw module, and the fixed end of the fourth power component 1102 is fixed on the fixed component 1103, and the driving end of the fourth power component 1102 is fixedly connected with the third non-powered roller component 1101, and the third non-powered roller component 1101 moves linearly under the drive of the fourth power component 1102. During operation, the material belt passes through the third non-powered roller component 1101, and the third non-powered roller component 1101 performs linear motion under the drive of the fourth power component 1102 to realize intelligent material storage.

[0120] The intelligent material storage mechanism can improve the working efficiency of production equipment in the production process of new energy lithium batteries. During the production process, the equipment at the pole cutting needs to be started and stopped frequently. If the equipment does not have an intelligent material storage mechanism, the unwinding mechanism needs to be started and stopped frequently according to the cutting equipment. This is very unfavorable for the unwinding of the equipment and ensuring the overall tension precision control of the coil. With the intelligent material storage mechanism, the unwinding mechanism can unwind continuously, ensuring the precision control of the tension, and improving the working efficiency of the equipment.

[0121] Working method:

[0122] Material storage process: When the third unpowered roller assembly of the intelligent material storage mechanism is at the left limit position, the unwinding mechanism is still unwinding, and the third unpowered roller assembly starts to move from the left limit position to the right limit position. During the movement, the rear auxiliary drive mechanism, laser cutting device, slitting dust suction mechanism, main traction mechanism, suction belt are separated from the traction mechanism to work, and the material belt between the auxiliary drive mechanism and the intelligent material storage mechanism does not move; when the third unpowered roller assembly reaches the right limit position, the material storage is completed, and the aforementioned rear-end equipment has completed the film making and the placement of the pole piece. This process is the material storage process of the intelligent material storage mechanism.

[0123] Material discharge process: The third non-powered roller assembly of the intelligent material storage mechanism is at the right limit position, and the third non-powered roller assembly starts to move from the right limit position to the left limit position. At this time, the rear auxiliary drive mechanism, slitting dust suction mechanism, and main traction mechanism start to work, grab the material belt behind the auxiliary drive mechanism, and move it to the required length. This process is the material discharge process of the intelligent material storage mechanism.

[0124] On the basis of the above, if Fig.13 As shown, the pole piece laser cutting mechanism 14 includes a laser fixing seat, and the laser fixing seat includes a laser base 1401. A laser support rod 1402 is fixedly connected to the laser base 1401, and a laser fixing block 1403 is connected to the laser support rod 1402. A first laser 1404 is arranged on the laser fixing block 1403; the laser 1404 is arranged toward the pole piece and emits ultrashort pulse ultraviolet light to the pole piece to cut the pole piece.

[0125] On the basis of the above, if Fig.14 As shown, the main traction mechanism 16 is a mechanism that can fix the pole piece and drive the pole piece to move. The main traction mechanism 16 can be a mechanism that clamps the pole piece and drives the pole piece to move, or a mechanism that sucks the pole piece with a suction cup and drives the pole piece to move. Specifically, the main traction mechanism 16 includes a clamping mechanism 1601, and a third driving component 1602 for driving the clamping mechanism 1601 to move is provided on one side of the clamping mechanism 1601. The clamping component includes two clamping jaws arranged opposite to each other up and down, a clamping jaw cylinder that drives the connecting clamping jaws to open or close relatively, and a connecting arm for connecting the clamping jaw cylinder, and the end of the connecting arm away from the clamping jaw cylinder is connected to the third driving component 1602. The third driving component 1602 is a mechanism that drives the clamping mechanism 1601 to make linear motion, and the third driving component 1602 can be a servo module, a linear cylinder, or a combination of a motor and a lead screw.

[0126] In some embodiments, since a diaphragm is attached to the lithium metal strip before processing, the diaphragm needs to be separated from the strip during processing, on the one hand to prevent the diaphragm from being peeled off from the strip from being messy, and on the other hand to use the diaphragm to drive the strip to run. Fig.11 As shown, the diaphragm winding mechanism includes a second adjustment platform 1201, a winding assembly is arranged on the second adjustment platform 1201, a second correcting assembly 1202 is arranged on one side of the second adjustment platform 1201, the fixed end of the second correcting assembly 1202 is fixedly connected to the second adjustment platform 1201, the driving end of the second correcting assembly 1202 is connected to the winding assembly and can drive the winding assembly to move, one end of the winding assembly is provided with a second power assembly 1203 for driving the winding assembly to wind, the second power assembly 1203 is used to drive the winding assembly to rotate along its own axis, the second power assembly 1203 can be a motor, or a motor and a reducer, in this embodiment, the second power assembly 1203 includes a motor and a reduction motor, and the reduction motor is connected to the winding assembly through a synchronous wheel and a synchronous belt.

[0127] In some embodiments, the second dust removal mechanism includes a cutting dust suction mechanism 15, such as Fig.13 As shown, the slitting dust collection mechanism 15 includes a dust collection hood 1502 , a first dust collection component 1503 is arranged below the dust collection hood 1502 , and a flow guide component 1501 is arranged above the dust collection hood 1502 .

[0128] In some embodiments, Fig.12 As shown, the auxiliary drive mechanism 13 includes a fixed frame 1304, on which a main drive component 1301 and a driven component 1302 are arranged, the main drive component 1301 can be a driving roller, a driving wheel, etc., the driven component 1302 can be a driven roller, a driven wheel, etc., in this embodiment, the auxiliary drive mechanism 13 includes a fixed frame 1304, on which a driving wheel and a driven wheel are rotatably connected, there is a gap between the driving wheel and the driven wheel, and the An adsorption tray 1703 for adsorbing the material belt is arranged between the main driving component 1301 and the driven component 1302. A clamping component is arranged on one side of the main driving component 1301 or the driven component 1302. The clamping component is used to reduce the gap between the main driving component 1301 and the driven component 1302 so that the main driving component 1301 and the driven component 1302 cooperate to drive the material belt to move. The clamping component can be a cylinder or a linear servo module. The clamping component in this embodiment includes a cylinder.

[0129] On the basis of the above, the pole piece transfer mechanism includes a suction belt separation traction mechanism 17, a vacuum conveying belt line 18, a high-speed turntable mechanism 19 and a duplex displacement loading tooling 21 which are arranged in sequence according to the transmission direction of the lithium metal pole piece.

[0130] In some embodiments, Fig.15 As shown, the suction belt separation traction mechanism 17 includes a support frame 1702, and the support frame 1702 is provided with an adsorption plate and a support plate 1703, and the support plate 1703 is arranged above the adsorption plate, and the end of the adsorption plate away from the support plate is provided with a plurality of first adsorption holes, and the end with the plurality of first adsorption holes is arranged on the side close to the main traction mechanism. When working, when the main traction mechanism moves the cut electrode piece to the set position, the plurality of first adsorption holes adsorb the tail of the electrode piece, and then the clamping claw assembly of the main traction mechanism continues to move in the direction of the electrode piece, which plays the role of separating the electrode piece from the main traction mechanism, and at the same time, the electrode piece naturally falls to the vacuum conveying belt line below.

[0131] Since the pole piece is sucked or clamped and dragged by the main driving mechanism, if there is no suction belt detached from the traction mechanism, the main driving mechanism directly drags the pole piece to the vacuum conveyor belt, which will cause the tail of the pole piece to contact the vacuum conveyor belt first, and the vacuum conveyor belt will drive the tail of the pole piece to move in the transportation direction, causing the pole piece to bend and wrinkle, and eventually make the pole piece unusable. If there is a suction belt detached from the suction hole of the traction mechanism to absorb the tail of the pole piece, at this time the main traction mechanism releases the pole piece, and the front end of the pole piece contacts the vacuum conveyor belt first, then the pole piece is prevented from bending and wrinkling, ensuring the integrity of the pole piece.

[0132] Specifically, Fig.16 As shown, the vacuum conveyor belt line 18 is a vacuum conveyor belt line; the vacuum conveyor belt line includes a conveyor frame 1804 and a conveyor belt arranged on the conveyor frame 1804, a continuous vacuum chamber is arranged inside one end of the conveyor frame 1804, an intermittent vacuum chamber is arranged inside the other end of the conveyor frame 1804, and a first dust removal component 1803 for removing impurities on the conveyor belt is arranged on one side of the intermittent vacuum chamber. During operation, the vacuum conveyor belt line continuously evacuates, and when the electrode piece naturally falls onto the continuous adsorption vacuum chamber 1801 of the vacuum conveyor belt line, and the electrode piece is adsorbed on the conveyor belt, the conveyor belt moves the electrode piece to the top of the intermittent adsorption vacuum chamber 1802, waiting for the high-speed turntable mechanism to grab it; during the movement of the conveyor belt, it continuously passes through the dust removal device, and the dust removal device removes impurities attached to the surface of the conveyor belt.

[0133] In some embodiments, the high-speed turntable mechanism 19 includes a cam indexer, a suction cup device 1903 and a swing arm device 1902, wherein the suction cup device is placed at one end of the swing arm device, and the other end of the swing arm device is placed above the cam indexer. During operation, the cam indexer 1901 drives the swing arm assembly 1902 to move, thereby driving the first suction cup assembly 1903 to move the pole piece from above the intermittent adsorption vacuum chamber 1802 of the vacuum conveying belt line 18 to above the CCD positioning detection mechanism 20. Compared with the manipulator, the advantages of using a cam indexer in this embodiment are that it has a simple and compact structure, is composed of relatively few components, and is easy to design and manufacture; its movement is accurate and reliable, the cam can provide precise movement, and the cam can convert continuous rotational motion into reciprocating linear motion, and can realize complex motion laws.

[0134] In some embodiments, since it is necessary to move the pole piece on the CCD positioning detection mechanism 20 to the laser processing table 23, and at the same time, it is necessary to move the pole piece on the laser processing table 23 to the material waiting platform 24, the transfer mechanism 21 is set as a duplex displacement transfer mechanism 21. Specifically, Fig.19 As shown, the duplex displacement loading mechanism 21 includes a fixed plate, on which two sets of second suction cup assemblies 2101 are arranged, and one side of the fixed plate is provided with a third power assembly 2102 for driving the fixed plate to move, and the third power assembly 2102 can be a cylinder or a screw module. In this embodiment, the third power assembly 2102 uses a screw module. Setting the loading mechanism 21 as a duplex displacement loading mechanism 21 can save components and costs on the one hand, and synchronize the two loadings on the other hand, saving loading time.

[0135] On the basis of the above, the pole piece detection mechanism includes a CCD positioning detection mechanism 20, such as Fig.18 As shown, the CCD positioning detection mechanism 20 includes a detection platform, and one side of the detection platform is provided with an X-axis moving component 2001 for driving the detection platform to move along the X-axis direction, a Y-axis moving component 2002 for driving the detection platform to move along the Y-axis, a rotating component 2003 for driving the detection platform to rotate, and a CCD component 2004 for detecting whether there are defects in the pole piece. During operation, when the high-speed turntable mechanism 19 moves the pole piece to the top of the detection platform, the CCD component 2004 detects whether there are defects in the pole piece, and accurately positions the pole piece by simultaneously moving the X-axis moving component 2001, the Y-axis moving component and the rotating component 2003, so that the pole piece reaches the required position.

[0136] In some embodiments, the pole ear laser cutting mechanism 22 includes a second laser 2202, which is set toward the laser processing table 23, and the second laser 2202 emits ultrashort pulse ultraviolet light toward the pole piece to cut the pole piece, thereby cutting the shape of the pole ear on the pole piece.

[0137] In some embodiments, Fig.21 As shown, the laser processing platform 23 includes a processing base plate 2302 and a plurality of support rods 2303 arranged below the processing base plate 2302 . The processing base plate 2302 is fixedly connected to the support rods 2303 . A plurality of second adsorption holes 2301 are arranged on the processing base plate 2302 .

[0138] On the basis of the above, the unwinding film making system further includes a material waiting platform 24 and / or a vacuum explosion-proof mechanism 25 .

[0139] Specifically, the material waiting platform 24 includes a plurality of adsorption holes 2401 , a bottom plate 2402 and a support rod 2403 . The bottom plate 2402 is fixed to the support rod 2403 , and the plurality of adsorption holes 2401 are disposed above the bottom plate 2402 .

[0140] Specifically, Fig. 22 As shown, the vacuum explosion-proof mechanism 25 includes a vacuum explosion-proof box 2501, a vacuum pipe 2502, a vacuum adsorption collection pipe and a dust removal waste collection pipe 2506. One end of the vacuum pipe 2502 is connected to the vacuum explosion-proof box 2501, and the other end is connected to the dust removal waste collection pipe 2506. The vacuum adsorption collection pipe includes a first vacuum adsorption collection pipe 2503, a second vacuum adsorption collection pipe 2504 and a third vacuum adsorption collection pipe 2505. The first dust removal waste pipe is arranged at the position of the belt connection platform, and the second dust removal waste pipe is arranged at the cutting dust collection mechanism 15. Two dust removal waste pipes, a first vacuum adsorption pipe is arranged at the auxiliary driving mechanism 13, a second vacuum adsorption pipe is arranged at the suction belt disengagement traction mechanism 17, and a third vacuum adsorption pipe is arranged at the vacuum conveying belt line 18, the first dust removal waste pipe, the first vacuum adsorption pipe and the second vacuum adsorption pipe are all connected to the third vacuum adsorption collection pipe 2505; the second dust removal waste pipe is connected to the dust removal waste collection pipe 2506; the third vacuum adsorption pipe is connected to the first vacuum adsorption collection pipe 2503 and the second vacuum adsorption collection pipe 2504.

[0141] It should be understood that the above embodiments are only for illustrating the technical concept and features of the present invention, and their purpose is to enable people familiar with the technology to understand the content of the present invention and implement it accordingly, and they cannot be used to limit the protection scope of the present invention. Any equivalent changes or modifications made according to the spirit of the present invention should be included in the protection scope of the present invention.

Claims

1. A lithium metal unwinding and film making system, characterized in that: It includes an unwinding mechanism (2), an unwinding correction mechanism (3), a lithium metal tension detection mechanism (6), a traveling correction mechanism (9), an intelligent material storage mechanism (11), a pole piece laser cutting mechanism (14), a main traction mechanism (16), a pole piece transfer mechanism and a pole ear laser cutting mechanism (22); The unwinding mechanism (2) is at least used to unwind a metal lithium strip material roll to provide a metal lithium strip; The main traction mechanism (16) is at least used to pull the material strip through the unwinding and correcting mechanism (3), the lithium metal tension detection mechanism (6), the traveling and correcting mechanism (9), and the intelligent material storage mechanism (11) in sequence, and then enter the pole piece laser cutting mechanism (14); The unwinding deviation correction mechanism (3) is at least used to monitor whether the first designated portion of the material strip unwinding by the unwinding mechanism (2) is at a set position, and when the first designated portion of the material strip deviates from the first set position, cooperate with the unwinding mechanism (2) to adjust the position of the material roll so that the first designated portion of the material strip reaches the first set position; The lithium metal tension detection mechanism (6) is at least used to detect the tension of the material strip, and to adjust the working parameters of the unwinding mechanism (2) according to the tension detection result so that the tension of the material strip reaches a set value; The traveling deviation correction mechanism (9) is at least used to detect and adjust the position of the second designated portion of the material belt during traveling, so that the second designated portion of the material belt is maintained at the second set position during traveling; The intelligent material storage mechanism (11) is used to store at least part of the material strip; The pole piece laser cutting mechanism (14) is at least used to cut the received material strip to form a pole piece; The pole piece transfer mechanism is at least used to transfer the pole piece output by the pole piece laser cutting mechanism (14) to the pole lug laser cutting mechanism (22); The pole tab laser cutting mechanism (22) is at least used for cutting a pole tab on the pole piece.

2. The lithium metal unwinding and film making system according to claim 1, characterized in that: The unwinding mechanism (2) comprises a first adjustment platform (2001), a first deviation-correcting component (2002) and a first power component (2003); the first deviation-correcting component (2002) is fixed to the first adjustment platform 2001, and the first power component 2003 is disposed at one end of the first deviation-correcting component (2002); And / or, the unwinding correction mechanism (3) comprises a translation component (3001), a non-powered roller correction component (3002) and a sensor detection component 3003, the translation component (3001) is provided with a transverse guide rail, and limit blocks are provided at both ends of the guide rail, the non-powered roller correction component (3002) is placed above the transverse guide rail, the non-powered roller correction component (3002) is connected to the unwinding mechanism (2) via a correction connecting rod, and the sensor detection component 3003 is located above the non-powered roller correction component (3002).

3. The lithium metal unwinding and film making system according to claim 2, characterized in that: The first deviation correction component (2002) comprises an air-expanding shaft, a deviation correction motor driver, a connecting shaft, an air-expanding shaft fixing plate, an air-expanding shaft supporting plate, an adjusting plate and a universal joint, the deviation correction motor driver is placed at the bottom of the first adjustment platform, the air-expanding shaft fixing plate and the deviation correction motor driver are connected via the adjusting plate, a second guide rail is provided above the first adjustment platform, limit blocks are provided at both ends of the second guide rail, the air-expanding shaft fixing plate is placed above the second guide rail, the air-expanding shaft supporting plate is placed above the air-expanding shaft fixing plate, the air-expanding shaft is fixed to one end of the connecting shaft, the connecting shaft is fixed to the air-expanding shaft supporting plate, and the universal joint is connected to the other end of the connecting shaft; And / or, the first power component (2003) includes a motor, a reducer, a motor fixing plate A, a motor fixing plate B, a motor fixing plate C, a driving wheel, and a driven wheel, the motor is installed on the reducer, the reducer is placed on one side of the motor fixing plate B, the other side of the motor fixing plate B is placed on one side of the motor fixing plate A, the driving wheel is placed on the shaft end of the reducer and on the other side of the motor fixing plate A, the motor fixing plate C is placed at the bottom of the motor fixing plate A, and the driven wheel is placed on the other end of the connecting shaft of the correction component.

4. The lithium metal unwinding and film making system according to claim 1, characterized in that: The unwinding film making system further comprises one or more of a material roll thickness measuring mechanism (1), a static electricity removal mechanism (4), a tape splicing platform (5), a high tension detection mechanism (7), an iron removal mechanism, a first dust removal mechanism, a diaphragm winding mechanism (12), an auxiliary driving mechanism (13), and a second dust removal mechanism; Wherein, the material roll thickness measuring mechanism (1) is at least used to detect the thickness of the material roll arranged on the unwinding mechanism (2); The static electricity removal mechanism (4) and the tape splicing platform (5) are sequentially arranged between the unwinding deviation correction mechanism (3) and the lithium metal tension detection mechanism (6), and the static electricity removal mechanism (4) is at least used to remove static electricity on the material tape; The high tension detection mechanism (7) is arranged on one side of the lithium metal tension detection mechanism (6) and is arranged upstream of the traveling correction mechanism (9), and is used at least to detect the tension of other materials. The main traction mechanism (16) is also used to pull the material strip of other materials through the unwinding correction mechanism (3), the high tension detection mechanism (7), the traveling correction mechanism (9), and the intelligent material storage mechanism (11) in sequence and then enter the pole piece laser cutting mechanism (14); The iron removal mechanism is arranged between the lithium metal tension detection mechanism (6) and the traveling deviation correction mechanism (9) and is used to remove impurity metal on the material strip; The diaphragm winding mechanism (12) is arranged between the intelligent material storage mechanism (11) and the pole piece laser cutting mechanism (14), and is used at least to separate the metal lithium in the material strip from the diaphragm, and to collect the separated diaphragm; The auxiliary driving mechanism (13) is arranged between the intelligent material storage mechanism (11) and the pole piece laser cutting mechanism (14).

5. The lithium metal unwinding and film making system according to claim 4, characterized in that: The material roll thickness measuring mechanism (1) is an infrared positioning material roll thickness measuring mechanism, and comprises an infrared laser (1003), a roll thickness measuring sensor (1005), an infrared positioning roll thickness measuring base (1001), an infrared positioning roll thickness measuring guide rod (1002), an infrared laser fixing block (1004) and a roll thickness measuring fixing block (1006); the infrared positioning roll thickness measuring guide rod (1002) is fixed to the infrared positioning roll thickness measuring base (1001); the infrared laser fixing block (1004) and the roll thickness measuring fixing block (1006) are both fixed to the infrared positioning roll thickness measuring guide rod (1002); the infrared laser (1003) is fixed to the infrared laser fixing block (1004); the infrared laser (1003) emits red light to facilitate the positioning of the material roll; the roll thickness measuring sensor (1005) is fixed to the roll thickness measuring fixing block (1006); and the roll thickness measuring sensor (1005) detects the thickness of the material roll in real time during the operation of the device.

6. The lithium metal unwinding and film making system according to claim 4, characterized in that: The static electricity removal mechanism (4) comprises a static electricity removal base (4001), a static electricity removal bracket (4002) and a static electricity removal device (4003), wherein the static electricity removal device (4003) is placed on one side of the static electricity removal bracket (4002), and one end of the static electricity removal bracket (4002) is placed on one side of the static electricity removal base (4001); And / or, the belt splicing platform (5) comprises an unpowered roller assembly (5001), a cylinder belt pressing assembly (5002) and a belt splicing dust suction device (5003), wherein the unpowered roller assembly (5001) is placed on one side of the cylinder belt pressing assembly (5002), and the belt splicing dust suction device (5003) is placed in the middle of the cylinder belt pressing assembly (5002); And / or, the high tension detection mechanism (7) comprises a second tension roller guide rod (7001), a roller (7002), a limit block (7003) and a second tension detector (7004), wherein the second tension roller guide rod (7001) is placed in the roller (7002), the limit block (7003) is placed at one end of the roller (7002) and at one end of the second tension roller guide rod (7001), and the other end of the second tension roller guide rod (7001) is placed in a fixing hole of the second tension detector (7004).

7. The lithium metal unwinding and film making system according to claim 4, characterized in that: The iron removal mechanism comprises two multi-stage pull-out iron removal devices (8) arranged opposite to each other, the pull-out iron removal device comprises an iron removal module, one side of the iron removal module is provided with an iron removal fixing assembly, the iron removal fixing assembly comprises an iron removal fixing plate and an iron removal fixing frame, the iron removal module is fixed on the iron removal fixing plate, and the iron removal fixing plate is arranged on the iron removal fixing frame; And / or, the first dust removal mechanism comprises a multifunctional static dust removal mechanism (10), the static dust removal mechanism (10) comprises a dust removal fixing seat and a second dust removal component (1011) arranged on the dust removal fixing seat, the dust removal fixing seat comprises a dust removal base plate (1014) and a dust removal fixing plate (1012) fixedly connected to the dust removal base plate (1014), and dust removal reinforcement ribs (1013) are arranged between the dust removal base plate (1014) and the dust removal fixing plate (1012).

8. The lithium metal unwinding and film making system according to claim 4, characterized in that: The intelligent material storage mechanism (11) comprises a fixed component, a fourth power component is arranged on the fixed component, a fixed end of the fourth power component is fixed on the fixed component, a driving end of the fourth power component is fixedly connected to a third unpowered roller component, and the third unpowered roller component moves linearly under the drive of the fourth power component; And / or, the diaphragm winding mechanism (12) comprises a second adjustment platform, a winding assembly is arranged on the second adjustment platform, a second deviation correcting assembly is arranged on one side of the second adjustment platform, a fixed end of the second deviation correcting assembly is fixedly connected to the second adjustment platform, a driving end of the second deviation correcting assembly is connected to the winding assembly and can drive the winding assembly to move, and a second power assembly for driving the winding assembly to wind is arranged at one end of the winding assembly; And / or, the second dust removal mechanism comprises a split dust suction mechanism (15), the split dust suction mechanism comprises a dust suction hood, a first dust suction component is arranged on one side of the dust suction hood, and a flow guide component is arranged on a side of the first dust suction hood away from the first dust suction component; And / or, the auxiliary drive mechanism (13) comprises a fixed frame, a main drive assembly and a driven assembly are arranged on the fixed frame, a gap is provided between the main drive assembly and the driven assembly, and an adsorption tray for adsorbing the material belt is provided between the main drive assembly and the driven assembly, and a clamping assembly is provided on one side of the main drive assembly or the driven assembly, and the clamping assembly is used to reduce the gap between the main drive assembly and the driven assembly so that the main drive assembly and the driven assembly cooperate to drive the material belt to move.

9. The lithium metal unwinding and film making system according to claim 1, characterized in that: The pole piece transfer mechanism comprises a suction belt separation traction mechanism (17), a vacuum conveying belt line (18), a high-speed turntable mechanism (19) and a duplex displacement loading tool (21) which are arranged in sequence according to the transmission direction of the lithium metal pole piece.

10. The lithium metal unwinding and film making system according to claim 9, characterized in that: The suction belt disengagement traction mechanism comprises a support frame, on which a suction plate and a support plate are arranged, the support plate is arranged above the suction plate, and a plurality of first suction holes are arranged at one end of the suction plate away from the support plate; And / or, the vacuum conveyor belt line comprises a conveyor frame and a conveyor belt arranged on the conveyor frame, a continuous vacuum chamber is arranged inside one end of the conveyor frame, and an intermittent vacuum chamber is arranged inside the other end of the conveyor frame; And / or, the high-speed turntable mechanism (19) comprises a cam indexer, a suction cup device and a swing arm device, the suction cup device is placed at one end of the swing arm device, and the other end of the swing arm device is placed above the cam indexer; And / or, the duplex displacement loading tooling (21) comprises a suction cup assembly and a driving assembly, and suction cup assemblies are respectively provided at both ends of the driving assembly.

11. The lithium metal unwinding and film making system according to claim 1, characterized in that: The lithium metal unwinding and film making system further includes a pole piece detection mechanism, which is arranged between the pole piece transfer mechanism and the pole ear laser cutting mechanism 22; And / or, the pole piece detection mechanism comprises a CCD positioning detection mechanism (20), the CCD positioning detection mechanism comprises a detection platform, one side of the detection platform is provided with an X-axis moving component for driving the detection platform to move along the X-axis direction, a Y-axis moving component for driving the detection platform to move along the Y-axis, a rotating component for driving the detection platform to rotate, and a CCD component for detecting whether the pole piece has defects; And / or, the unwinding film making system further includes a material waiting platform (24) and / or a vacuum explosion-proof mechanism (25); And / or, the material-waiting platform comprises a plurality of adsorption holes (2401), a bottom plate (2402) and a support rod (2403), wherein the bottom plate (2402) is fixed to the support rod (2403), and the plurality of adsorption holes (2401) are placed above the bottom plate (2402); And / or, the vacuum explosion-proof mechanism (25) comprises a vacuum explosion-proof box, a vacuum pipe, a vacuum adsorption collection pipe and a dust removal waste collection pipe, one end of the vacuum pipe is connected to the vacuum explosion-proof box, the dust removal waste collection pipe is connected to an end of the vacuum pipe away from the vacuum explosion-proof box, a plurality of vacuum adsorption collection pipes are provided, and the plurality of vacuum adsorption collection pipes are connected to the vacuum pipe.

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