Automatic logistics conveying system and method for pole segments in battery cell workshop

Abstract

The invention discloses an automatic logistics conveying system and method for pole segments in a battery cell workshop. The automatic logistics conveying system comprises a coating machine feeding double-station AGV, a coating machine discharging / roller separation all-in-one machine feeding double-station AGV, a roller separation all-in-one machine discharging / die cutting machine feeding single-cantilever AGV, a die cutting machine discharging single-cantilever AGV, a pole roll temporary storage vertical warehouse, a winding machine feeding single-cantilever AGV and an automatic induction fast rolling door. A full-automatic conveying scheme is adopted, so that the layout of each working procedure of pole piece production is compact, the conveying path of large and small pole rolls is as short as possible, the conveying efficiency of the large and small pole rolls is effectively improved, and the dust-free production workshop environment is realized. Due to the application of the double-station AGV, the transfer efficiency of the foils and the empty reels is improved by about one time; through the application of the single-cantilever AGV, the logistics scheme is changed into a full-automatic production mode from a semi-automatic production mode; by applying the pole piece high-position vertical warehouse, the field area is saved, and the caching and pole piece circulation efficiency is improved.

Description

Technical Field

[0001] The present invention belongs to the technical field of lithium battery production equipment, and in particular relates to an automated logistics conveying system for pole segments in a battery cell workshop and a control method thereof. Background Art

[0002] The manufacturing process of lithium batteries is very complicated, and each process requires high equipment precision. Dozens of processes are required before they are finally shipped out of the factory. The pole piece production link is the front-end process of the battery cell. The production process mainly includes: slurrying, coating, rolling, slitting, die-cutting and winding / stacking, etc. In the front-end process, the pole piece is completely exposed to the surrounding environment, and there are strict requirements for environmental foreign matter control and semi-finished product transfer between processes. Therefore, reducing foreign matter sources and improving automation rate play a vital role in the yield rate of pole pieces.

[0003] As the production capacity of battery cell production workshops becomes larger and larger, the frequency of material transfer between production processes becomes higher and higher, and the difficulty of product consistency control becomes greater and greater. Under the existing technical level, improving the automation rate of workshops is a goal that the industry constantly pursues. In the production of lithium electrode sheets, whether it is imported or domestic equipment, single-machine equipment can basically achieve automated production. For example, in the double-layer coating process, the equipment automatically coats, reels and unwinds, etc., without the need for manual assistance and intervention. At present, the main difference in the automation of the electrode production process is the loading and unloading methods between each process. Different logistics solutions have an impact on the automation efficiency of the entire line.

[0004] The prior art has the following problems:

[0005] 1) When manual loading and unloading is adopted, there are many operators in the workshop, which makes it difficult to control the environment. The site layout is not intensive enough, the production efficiency is low, and the movement of workshop workers increases the difficulty of controlling foreign matter in the workshop;

[0006] 2) When using semi-automatic AGV + OHT resistance arm to load and unload materials, the AGV generally uses a single-station high-precision lifting AGV. Due to the uneven beats between processes, it is necessary to add a material buffer area between processes, increase the site area, and affect the material turnover efficiency;

[0007] 3) The OHT resistance arm is located above the equipment and requires a certain amount of space for operation and movement. It has certain requirements on the height and space of the plant, which is not conducive to the optimization of the workshop layout. Summary of the invention

[0008] The object of the present invention is to provide a system and method for automated logistics transportation of pole segments in a battery cell workshop to solve the above-mentioned problems existing in the prior art.

[0009] To achieve the above object, the present invention adopts the following technical solution:

[0010] In a first aspect, the present invention provides an automated logistics conveying system for pole segments in a battery cell workshop, comprising:

[0011] The foil temporary storage room, slurry room, coating machine tail room, coating oven room, coating machine head room, pole roll temporary storage room and winding room are arranged in sequence, and each room is separated by a partition wall, as well as an AGV logistics transportation room arranged at the lower side of the slurry room, coating machine tail room and coating oven room. The AGV logistics transportation room connects the foil temporary storage room and the coating machine head room; among them, the coating area, pole roll buffer material rack, roller slitting area and die-cutting area are located in the coating machine head room.

[0012] The first duplex AGV takes out the foil core from the foil temporary storage room and sends it to the coating area through the AGV logistics conveying room. It first takes out the used empty foil roll and then places the foil core on the turret chuck. After completing the loading and docking, the first duplex AGV returns to the foil temporary storage room along the original route.

[0013] In some optional embodiments of the present invention, the second duplex AGV takes out the used empty foil rolls from the pole roll cache rack and travels to the coating area, first receives the foil roll cores from the coating area, and then places the carried empty foil rolls on the turret chuck, and after completing the unloading and docking, the second duplex AGV returns to place the foil roll cores on the pole roll cache rack.

[0014] In some optional embodiments of the present invention, the second duplex AGV takes out the foil roll core from the pole roll cache rack and travels to the roller-pressing and slitting area, first receives the empty foil roll unrolled from the roller-pressing and slitting area, and then places the empty foil roll it is carrying on the turret chuck. After completing the loading and docking, the second duplex AGV returns to place the empty foil roll on the pole roll cache rack.

[0015] In some optional embodiments of the present invention, the first single-cantilever AGV sends the small pole roll formed by the die-cutting area to the pole roll temporary storage room for temporary storage; the second single-cantilever AGV takes out the small pole roll from the pole roll temporary storage room and sends it to the winding room.

[0016] Preferably, the partition wall between the coating machine head room and the pole roll temporary storage room, and the partition wall between the pole roll temporary storage room and the winding room are provided with automatic sensing fast rolling doors, and when the first single cantilever AGV enters and exits the pole roll temporary storage room and the second single cantilever AGV enters and exits the winding room, the automatic sensing fast rolling doors open.

[0017] In some optional embodiments of the present invention, the coating machine heads are arranged in sequence along the feeding direction: coating machine loading mechanism, coating machine unloading mechanism, pole roll buffer rack, roller pressing and slitting machine loading mechanism, roller pressing and slitting machine unloading mechanism, laser die-cutting machine loading mechanism, laser die-cutting machine unloading mechanism.

[0018] In some optional embodiments of the present invention, the pole roll temporary storage room is used to arrange the pole roll vertical warehouse; the pole roll vertical warehouse is provided with an inbound conveyor line for receiving materials and an outbound conveyor line for conveying materials, and the materials are stored in the pole roll vertical warehouse through a stacker.

[0019] In some optional embodiments of the present invention, the winding room is sequentially arranged with a winding machine feeding mechanism, a winding machine unloading mechanism, a drawing belt conveyor line, and a hot press feeding mechanism along the material flow direction.

[0020] In some optional embodiments of the present invention, a partition wall is provided in the AGV logistics conveying room between the coating oven room and the coating machine head, and an automatic sensing fast rolling door is provided on the partition wall; when the first double-station AGV passes through, the automatic sensing fast rolling door opens.

[0021] In a second aspect, the present invention provides a logistics conveying method of the automatic logistics conveying system for pole segments in a cell workshop as described in the first aspect, comprising:

[0022] Foil loading: One station of the first double-station AGV carries the foil core, while the other station is empty; after the empty station takes out the empty foil roll from the coating area, it loads the foil core to the coating machine, and returns to the foil temporary storage room after the loading and docking is completed;

[0023] Coating, rolling, slitting and transfer: The second double-station AGV stores the empty rolls at one station, and unloads the empty rolls to the coater after taking out the coated coils from the coater at the other station;

[0024] The second dual-station AGV carries the coated coil at one station, and after the other station is unloaded and takes out the empty roll from the roller slitting area, it feeds the coated coil to the roller slitting machine.

[0025] The present invention has the following beneficial effects:

[0026] 1) The fully automatic conveying solution is adopted to make the layout of each process of pole piece production compact, and the conveying path of large and small pole rolls is as short as possible, which effectively improves the conveying efficiency of large and small pole rolls and realizes dust-free environment of production workshop;

[0027] 2) The use of dual-station AGVs can approximately double the efficiency of foil and empty reels transportation;

[0028] 3) The use of single cantilever AGV changes the fixed single cantilever rewinding and unwinding equipment from the traditional OHT resistance arm manual assisted loading and unloading method to fully automatic loading and unloading, realizing the logistics solution from semi-automatic to fully automated production mode, while also saving workshop space;

[0029] 4) The use of high-level vertical warehouses for pole pieces makes it easier for the pole piece cache warehouse to be transformed from a flat warehouse to an automatic vertical warehouse, saving site area and improving the efficiency of caching and pole piece circulation. BRIEF DESCRIPTION OF THE DRAWINGS

[0030] In order to more clearly illustrate the technical solutions of the embodiments disclosed in the present invention, the drawings of the embodiments are briefly introduced below. These drawings are only used for illustrative purposes and are not intended to limit the protection scope of the present invention.

[0031] Figure 1 It is a plan view of the automated logistics and transportation system for the battery cell workshop.

[0032] Figure 2 Coating machine and double-station AGV working plan

[0033] Figure 3 Schematic diagram of double-station AGV

[0034] Figure 4 Elevation view of die-cutter and single cantilever AGV

[0035] Figure 5 Schematic diagram of single cantilever AGV

[0036] Figure 6 Schematic diagram of the automatic vertical warehouse for pole pieces

[0037] In the figure: 1. Foil unpacking room; 2. Foil buffer rack; 3. First double-station AGV; 4. Homogenization room; 5. Coating machine tail room; 6. AGV logistics conveying room; 7. AGV conveying channel 1; 8. Coating oven room; 9. Automatic induction fast rolling door 1; 10. Partition wall 1; 11. Coating machine loading mechanism; 12. Coating machine head room; 13. Coating machine unloading mechanism; 14. Second double-station AGV; 15. Foil buffer rack; 16. AGV conveying channel 2; 17. Roller-slitting machine loading mechanism; 18. Roller-slitting machine unloading mechanism; 19. AGV conveying Conveying channel three; 20, the first single cantilever AGV; 21, the loading mechanism of the laser die-cutting machine; 22, the unloading mechanism of the laser die-cutting machine; 23, the second partition wall; 24, the second automatic induction fast rolling door; 25, the fourth AGV conveying channel; 26, the temporary storage room for the pole rolls; 27, the pole roll vertical warehouse; 28, the stacker; 29, the inbound conveyor line; 30, the outbound conveyor line; 31, the third automatic induction fast rolling door; 32, the third partition wall; 33, the second single cantilever AGV; 34, the loading mechanism of the winder; 35, the unloading mechanism of the winder; 36, the winding room; 37, the belt conveyor line; 38, the loading mechanism of the hot press. DETAILED DESCRIPTION

[0038] The technical solution of the present invention (including the preferred technical solution) is further described in detail below by means of the accompanying drawings and by listing some optional embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making creative work are within the scope of protection of the present invention.

[0039] Example 1

[0040] like Figures 1 to 6 As shown, an automatic logistics conveying system for pole segments in a battery cell workshop includes: Figure 1 As shown, the pole segment production area of ​​the battery cell workshop is located on the first floor of the workshop. The production rooms are, from top to bottom, the foil temporary storage room 1, the slurry room 4, the coating machine tail room 5, the coating oven room 8, the coating machine head room 12, the pole roll temporary storage room 26, and the winding room 36. There are partition walls between the rooms; the slurry room 4, the coating machine tail room 5, and the coating oven room 8 are located below the AGV logistics conveying room 6, which connects the foil temporary storage room 1 and the coating machine head room 12; the coating area, the pole roll buffer rack 15, the roller slitting area and the die-cutting area are located in the coating machine head room 1 2, including: coating machine feeding mechanism 11, coating machine unloading mechanism 13, roller pressing and slitting machine feeding mechanism 17, roller pressing and slitting machine unloading mechanism 18, laser die cutting machine feeding mechanism 21, laser die cutting machine unloading mechanism 22; the pole roll buffer vertical warehouse is located in the pole roll temporary storage room 26, including: storage conveyor line 29, outbound conveyor line 30, stacker 28, pole roll vertical warehouse 27; winding machine feeding mechanism 34, winding machine unloading mechanism 35, belt conveyor line 37, hot press feeding mechanism 38 are located in the winding room 36.

[0041] Foil temporary storage room 1: used to store and cache raw material foils. It is equipped with a foil cache rack 2 for standardized storage of foil rolls. It serves as the starting point of production, provides raw materials for the coating process, and is also used to recycle empty rolls.

[0042] Homogenization room 4: used for preparing and storing coating slurry, carrying out processes such as stirring and blending the slurry, and providing qualified slurry for the coating process. It needs to be set up independently to prevent contamination of other areas.

[0043] Coating machine tail room 5: The rear end area of ​​the coating machine is equipped with a feeding mechanism of the coating machine, which is connected to the foil temporary storage room through the AGV logistics conveying room 6 and is used for the foil feeding preparation process.

[0044] Coating oven room 8: used for drying the electrode after coating. The temperature is relatively high and requires special environmental control. It is isolated from other areas by a partition wall 10 and has a dedicated AGV channel for material transportation.

[0045] Coating machine head room 12: The front end area of ​​the coating machine, where the unloading mechanism of the coating machine is arranged, and the pole roll buffer material rack is arranged, including the roller slitting area and the die cutting area.

[0046] Electrode coil temporary storage room 26: used to store the die-cut electrodes, with an automatic vertical storage system including an inbound conveyor line, an outbound conveyor line and a stacker, serving as a buffer between the die-cutting process and the winding process.

[0047] Winding room 36: for the winding process of the pole piece, a winding machine loading mechanism and a unloading mechanism are set up, including a belt conveyor line, which is connected to the subsequent hot pressing process.

[0048] In this embodiment, the coating area, roller slitting area, die-cutting area and winding area are arranged on the first floor of the workshop. Due to different environmental requirements for different processes, the coater is set in one production area, the roller slitting and die-cutting are set in one production area, and the winding is set in one production area.

[0049] The foil needs to pass through the coater tail, oven, and machine head and then be sent to the coating machine head loading area. Since the temperature in the oven area is relatively high and there is no cleanliness requirement, a double-station AGV dedicated channel needs to be set up on both sides of the oven. The two ends of the oven are separated from the machine head and tail by clean walls respectively, and an automatic induction fast-rolling door is installed on the wall. The double-station AGV enters the coating area through the automatic induction fast-rolling door.

[0050] The layout of these workshops is arranged from top to bottom in the order of process flow. Adjacent processes are connected by AGV channels, and areas with different environmental requirements are separated by partition walls. Each area is equipped with corresponding automated conveying equipment. The overall layout is compact and the logistics routes are short, which facilitates fully automated production and transportation.

[0051] This layout arrangement ensures the continuity of the process flow, effectively controls the environmental requirements of different areas, improves material transfer efficiency, reduces manual intervention, reduces pollution risks, and saves production site area.

[0052] The foil is statically cached on the foil cache rack 2 in the foil temporary storage room 1. After the first duplex AGV 3 communicates with the foil cache rack 1, the lifting arm with material position of the first duplex AGV 3 automatically takes out the foil roll core, passes through the AGV conveying channel 7, and passes through the partition wall 10 of the AGV logistics conveying room 6. The first duplex AGV 3 sends a communication signal to the automatic sensing fast rolling door 9, and the automatic sensing fast rolling door 9 opens. The first duplex AGV 3 passes through the partition wall 10 and travels to the coating machine head room 12. The first duplex AGV 3 and the coating machine feeding mechanism 11 are connected. Figure 2As shown, it travels along the direction of the coater turret and docks with the coater turret chuck, takes out the empty reel of the previous roll of foil, and then withdraws in the opposite direction for a certain distance. After the body rotates 180°, it travels along the material position direction and docks with the coater turret, places the foil roll core on the turret chuck, completes the loading docking and exits the coater loading mechanism 11, and the first double-station AGV 3 returns to the foil temporary storage room 1 along the AGV conveying channel 7 with the empty reel, drops the empty reel on the foil cache rack 2, and then manually recovers the empty reel.

[0053] After the coated foil is rolled up to form a large pole roll in the coating machine unloading mechanism 13, the coating machine sends a material receiving signal to the AGV scheduling system. The second duplex AGV 14 receives the signal and automatically drives to the pole roll cache rack 15. It first docks the cache rack from the empty station and takes out the empty reel on the pole roll cache rack 15. The second duplex AGV 14 then drives the empty reel to the coating machine unloading mechanism 13, rotates the body 180°, drives the material position on the other side to the coating machine unloading mechanism 13 and docks with the turret chuck, automatically takes out the large pole roll and places it on the material position of the second duplex AGV 14, then withdraws in the opposite direction for a certain distance, and after the body rotates 180°, drives in the direction of the empty station and docks with the coating machine turret, places the empty reel on the turret chuck, and withdraws after completing the unloading and docking. The AGV automatically drives to the bottom of the pole roll buffer rack 15 through the second AGV conveying channel 16, and the second double-station AGV 14 with the material level lifting arm descends, and the large pole roll held automatically falls on the pole roll buffer rack 15;

[0054] After the feeding mechanism 17 of the roller-pressed slitting machine sends a material-picking signal, the second duplex AGV14 automatically drives to the bottom of the pole roll cache rack 15 through the AGV conveying channel 16, takes out the large pole roll on the pole roll cache rack 15, and the large pole roll automatically falls on the belt material position of the second duplex AGV14, and then passes through the AGV conveying channel 16 to the bottom of the roller-pressed slitting machine feeding mechanism 17, and after the body rotates 180°, the empty station on the other side drives to the roller-pressed slitting machine feeding mechanism 17 and docks with the turret chuck, and the empty reel on the turret that has been unwound is automatically taken out and falls on the empty station of the second duplex AGV14, and then withdraws in the opposite direction for a certain distance. After the body rotates 180°, it drives in the direction of the belt material position and docks with the roller-pressed slitting machine turret, places the large pole roll on the turret chuck, and withdraws after completing the loading and docking. It automatically travels to the bottom of the top roll buffer rack 15 through the AGV conveying channel 2 16 , and the empty station lifting arm of the second double-station AGV 14 descends, and the supported empty reel automatically falls on the top roll buffer rack 15 .

[0055] After the large pole roll that has been rolled is rolled up on the unloading mechanism 18 of the rolling and slitting machine to form a pole roll, the rolling and slitting machine sends a material receiving signal to the AGV scheduling system. After receiving the signal, the first single-cantilever AGV 20 travels to the side of the unloading mechanism 18 of the rolling and slitting machine through the AGV conveying channel three 19 to receive the material. The air shaft of the unloading mechanism 18 of the rolling and slitting machine docks with the single cantilever of the first single-cantilever AGV 20, and the pole roll automatically falls on the single cantilever of the first single-cantilever AGV 20, passes through the AGV conveying channel three 19, and travels to the side of the loading mechanism 21 of the laser die-cutting machine. The air shaft of the loading mechanism 21 of the laser die-cutting machine docks with the single cantilever of the first single-cantilever AGV 20, and the pole roll automatically falls on the air shaft of the loading mechanism 21 of the laser die-cutting machine, completing the automatic loading of the pole roll of the laser die-cutting machine.

[0056] After the pole roll that has been completed by laser die-cutting is rolled up laterally at the unloading mechanism 22 of the laser die-cutting integrated machine to form a small pole roll, the laser die-cutting integrated machine sends a material receiving signal to the AGV scheduling system. After receiving the signal, the first single-cantilever AGV machine 20 travels to the side of the unloading mechanism 22 of the laser die-cutting machine through the AGV conveying channel four 25 to receive the material. The air shaft of the unloading mechanism 22 of the laser die-cutting machine docks with the single cantilever of the first single-cantilever AGV20, and the small pole roll automatically falls on the single cantilever of the first single-cantilever AGV20, passes through the AGV conveying channel four 25, and travels to the partition wall two 23. The first single-cantilever AGV20 sends a communication signal to the automatic sensing fast rolling door two 24, and the automatic sensing fast rolling door two 24 opens. The first single-cantilever AGV20 passes through the partition wall two 23 and travels to the storage conveying line 29 of the pole roll temporary storage room 26. The single-cantilever mechanism places the small pole roll on the storage conveying line 29, and then the stacker 28 fork takes the pole roll into the pole roll vertical warehouse 27. When the winding machine needs materials, it sends a material request signal to the pole roll vertical warehouse 27 and the AGV scheduling system. The stacker 28 automatically takes out the small pole roll in the pole roll vertical warehouse 27 and places it on the outbound conveyor line 30. The second single-cantilever AGV 33 automatically drives to the end of the outbound conveyor line 30. The single-cantilever mechanism docks with the outbound conveyor line 30, takes out the small pole roll, passes through the AGV conveying channel four 25, and drives to the partition wall three 32. The second single-cantilever AGV 33 sends a communication signal to the automatic sensing fast-rolling door three 31, and the automatic sensing fast-rolling door three 31 opens. The second single-cantilever AGV 33 passes through the partition wall three 32 and drives to the side of the winding machine feeding mechanism 34 in the winding room 36. The air shaft of the winding machine feeding mechanism 34 docks with the single cantilever of the second single-cantilever AGV 33, and the small pole roll automatically falls on the air shaft of the winding machine feeding mechanism 34, completing the automatic feeding of the winding machine.

[0057] The double-station AGV adds one station to the traditional single-station high-precision lifting AGV, and adds a rotating mechanism at the bottom of the entire lifting mechanism. One station of the double-station AGV carries foil, and the other station is empty. It is sent from the tail of the coater through a dedicated channel to the coating machine loading area. The empty station of the double-station AGV takes the empty reel from the coating machine unwinding area. The AGV trolley rotates 180 degrees to load the foil on the other station to the coating machine, and the coating machine unwinds. The double-station AGV sends the empty reel to the starting tail area for recycling. During the whole process, the double-station AGV cyclically retrieves and loads materials at the head and tail of the machine. The whole process does not require human participation, realizing the automatic transfer of foil and automatic loading of the coating machine, and at the same time greatly improving the transfer efficiency of foil and empty reels.

[0058] After the coating machine completes the coating process, one station of the dual-station AGV discharges the emptied roll, and the other station is unloaded. The dual-station AGV reaches the winding area of ​​the coating machine head, and the unloaded station takes the coated pole roll from the coating machine. After the AGV trolley rotates 180 degrees, the empty roll station loads the empty roll onto the machine. The dual-station AGV proceeds to the next process, sending the coated pole roll to the loading area of ​​the roller slitting machine, and the station carrying the pole roll loads the roller slitting machine. After the AGV trolley rotates 180 degrees, the unloaded station takes the empty reel from the roller slitting machine. During the whole process, the dual-station AGV circulates to pick up and load materials in the unloading area of ​​the coating machine head and the loading area of ​​the roller slitting area, realizing the automatic transfer of pole rolls, automatic unloading of the coating machine, and automatic loading of the roller slitting machine. At the same time, the transfer efficiency of pole rolls and empty reels is also greatly improved.

[0059] After the wound pole coil forms a bare cell at the unloading mechanism 35 of the winding machine, the unloading robot of the unloading mechanism 35 of the winding machine takes out the bare cell and places it on the upper empty tray of the pull belt conveyor line 37, and then transports it to the loading mechanism 38 of the hot press in the assembly section through the pull belt conveyor line 37 to complete the automatic logistics transportation of the bare cell.

[0060] The first double-station AGV3, the second double-station AGV14 and the coating machine loading and unloading turret structure are connected on the plane as shown in FIG. Figure 2 As shown in the figure, a double lifting arm mechanism is installed on the top of the AGV, which can realize the lifting and lowering action of the lifting arm. It is also equipped with a laser + visual navigation module and an AGV scheduling control system, which can realize automatic walking along the track and remote control. The wheels at the bottom of the AGV are universal wheels, which can realize the rotation of the body at any angle in place.

[0061] The first single cantilever AGV20 is connected to the die-cutting machine at a vertical interface. Figure 4 As shown in the figure, a single cantilever mechanism is installed on the upper part of the AGV, which can realize the automatic picking and placing of the coiled material. It is also equipped with a laser + visual navigation module and an AGV scheduling control system, which can realize automatic walking along the track and remote control.

[0062] The automatic induction fast rolling door 1 9 , the automatic induction fast rolling door 2 24 , and the automatic induction fast rolling door 3 31 on the partition wall 1 10 , the partition wall 2 23 , and the partition wall 3 32 are provided with automatic communication modules, which can communicate with the AGV to automatically complete the raising and lowering of the rolling curtain.

[0063] The belt conveyor line 37 is a double-layer structure, with the upper layer being for the pallets with materials to move, and the lower layer being for the empty pallets to move in a recirculating manner. A lifting mechanism is provided at the end to realize the lifting action from the upper layer to the lower layer of the pallet, and is equipped with a drive motor and a control device. The unloading mechanism 35 connected to the winding machine and the loading mechanism 38 of the hot press are equipped with a clamping robot, which can realize automatic material transfer between the connected equipment.

[0064] Roller slitting machine unwinding, die cutting unwinding and rewinding, winding unwinding Considering the intensive layout of the workshop and logistics efficiency, the single cantilever electric trolley and high-precision AGV are integrated together, and the single cantilever is integrated on the lifting mechanism. The single cantilever AGV can achieve precise docking between the cantilever and the equipment, and realize automatic rewinding and unwinding. Roller slitting machine, die cutting machine and winding machine only need to set up AGV channel on the original manual operation side, without the need for OHT resistance arm ground column and aerial beam laying, effectively reducing the ceiling height and equipment operation space in this area.

[0065] Since the efficiency of a die-cutter and a winder varies greatly, generally one die-cutter corresponds to four winders, so the pole piece cache area is required for the pole piece after die-cutting, and the efficiency of the winding equipment is matched accordingly. In this solution, the die-cutter rewinding and the winder unwinding adopt a single cantilever AGV solution. The AGV can easily be connected to the automatic vertical warehouse. Therefore, the pole piece cache adopts an automatic vertical warehouse. Compared with the traditional flat warehouse, the automatic vertical warehouse saves floor space and greatly improves the transfer efficiency.

[0066] The present invention discloses an automated logistics and transportation system for pole segments in a cell workshop. The system adopts a fully automatic transportation solution, so that the layout of each process of pole piece production is compact, and the transportation path of large and small pole rolls is as short as possible, which effectively improves the transportation efficiency of large and small pole rolls and realizes a dust-free production workshop environment. The use of double-station AGVs increases the transportation efficiency of foils and empty reels by about one-fold; the use of single-cantilever AGVs changes the equipment for fixed single-cantilever reeling from the traditional OHT resistance arm manual assisted loading and unloading method to fully automatic loading and unloading, realizing the change of the logistics solution from semi-automatic to fully automated production method, while also saving workshop space; the use of pole piece high-position vertical warehouses, thanks to the innovative application of the AGV solutions for the front and rear processes, makes it easier for the pole piece cache warehouse to be changed from a flat warehouse to an automatic vertical warehouse, saving site area and improving the efficiency of cache and pole piece circulation. The improvement of the entire pole piece logistics automation improves the intelligence level and production efficiency of the cell workshop, reduces the fault tolerance of the manual loading and unloading process, and thus helps improve the quality of lithium battery products.

[0067] Example 2: Specific structure and working mode of dual-station AGV

[0068] like Figure 2 and Figure 3 As shown, the first duplex AGV3 and the second duplex AGV14 have the same structure, both including:

[0069] 1) Double lifting arm mechanism: installed on the top of the AGV, it can realize the lifting and lowering action of the lifting arm;

[0070] 2) Navigation module: equipped with laser + visual navigation module to realize automatic walking along the track;

[0071] 3) Control system: AGV dispatching control system to achieve remote control;

[0072] 4) Bottom wheels: Universal wheels are used to enable the vehicle body to rotate at any angle in place.

[0073] During the working process, the double-station AGV can complete the material picking and placing actions at the same time:

[0074] One station is used to carry the material (foil or pole coil);

[0075] Another station is used for the turnover of empty reels;

[0076] The switch between the two workstations is achieved by rotating 180 degrees.

[0077] Example 3: Specific structure and working mode of single cantilever AGV

[0078] like Figure 4 and Figure 5 As shown, the first single cantilever AGV 20, the second single cantilever AGV 33 and the third single cantilever AGV have the same structure, and all include:

[0079] 1) Single cantilever mechanism: installed on the top of the AGV, it can realize automatic loading and unloading of coils;

[0080] 2) Navigation system: equipped with laser + visual navigation module;

[0081] 3) Control system: AGV dispatching control system;

[0082] 4) Docking mechanism: can be precisely docked with the equipment's air shaft.

[0083] Working process characteristics:

[0084] Can dock equipment sideways to load and unload materials;

[0085] Automatically complete the precise positioning of the equipment;

[0086] Realize the automatic transfer of pole rolls.

[0087] Example 4: Specific structure and working mode of automatic vertical warehouse

[0088] like Figure 6 As shown in the figure, the automatic vertical storage system for pole pieces includes:

[0089] 1) Storage area: multi-layer shelf structure, used to store the die-cut coils;

[0090] 2) Conveying system: inbound conveying line 29, outbound conveying line 30, stacker 28;

[0091] 3) Control system: vertical warehouse management system, communication interface with AGV, inventory management function; Workflow:

[0092] a) Warehousing process:

[0093] The single-cantilever AGV places the pole coil on the storage conveyor line;

[0094] The stacker stores the coils into the designated storage location;

[0095] The system records storage location information;

[0096] b) Outbound process:

[0097] Receive the material request signal from the winding machine;

[0098] The stacker takes out the designated pole coil;

[0099] Output through the outbound conveyor line;

[0100] AGV completes subsequent transfer.

[0101] Embodiment 5: System control method

[0102] The control method of the present invention comprises the following steps:

[0103] 1. Foil loading stage:

[0104] (1) The first duplex AGV 3 communicates with the foil buffer rack 2;

[0105] (2) The lifting arm automatically removes the foil coil core;

[0106] (3) Through the AGV conveying channel 7 to the coating machine;

[0107] (4) Docking with the coating machine turret completes loading.

[0108] 2. Transfer stage of coating process:

[0109] (1) The second duplex AGV14 receives the coating machine signal;

[0110] (2) After the coating is completed, the pole roll is taken out;

[0111] (3) Place a new empty scroll;

[0112] (4) Send the pole coil to the roller pressing and slitting process.

[0113] 3. Die-cutting process transfer stage:

[0114] (1) The first single cantilever AGV 20 receives a die-cutting machine signal;

[0115] (2) Remove the pole coil by side docking;

[0116] (3) Transport to the vertical warehouse storage conveyor line;

[0117] (4) Complete the warehouse entry operation.

[0118] 4. Winding and loading stage:

[0119] (1) Receive the material request signal from the winding machine;

[0120] (2) From the vertical warehouse to the conveyor line;

[0121] (3) The second single cantilever AGV33 takes the material;

[0122] (4) Send to the winding machine to complete the loading.

[0123] Those skilled in the art will readily appreciate that the above are merely preferred embodiments of the present invention and are not intended to limit the present invention. Any modifications, combinations, replacements, improvements, etc. made within the spirit and principles of the present invention are included within the protection scope of the present invention.

Claims

1. An automated logistics and transportation system for pole segments in a battery cell workshop, characterized in that: include: The foil temporary storage room, slurry room, coating machine tail room, coating oven room, coating machine head room, pole roll temporary storage room, and winding room are arranged in sequence, and each room is separated by a partition wall, and the AGV logistics transportation room is arranged under the slurry room, coating machine tail room, and coating oven room. The AGV logistics transportation room connects the foil temporary storage room and the coating machine head room; wherein, the coating area, pole roll buffer rack, roller slitting area, and die-cutting area are located in the coating machine head room; The first duplex AGV takes out the foil core from the foil temporary storage room and sends it to the coating area through the AGV logistics conveying room. It first takes out the used empty foil roll and then places the foil core on the turret chuck. After completing the loading and docking, the first duplex AGV returns to the foil temporary storage room along the original route.

2. The automatic logistics conveying system for pole segments in a battery workshop according to claim 1 is characterized in that: The second duplex AGV takes out the used empty foil roll from the pole roll buffer rack and drives to the coating area, first receives the foil roll core from the coating area, then places the carried empty foil roll on the turret chuck, and after completing the unloading and docking, the second duplex AGV returns to place the foil roll core on the pole roll buffer rack.

3. The automatic logistics conveying system for pole segments in a battery cell workshop according to claim 1 or 2, characterized in that: The second duplex AGV takes out the foil coil core from the pole coil buffer rack and drives to the roller slitting area. It first receives the empty foil coil unrolled from the roller slitting area, and then places the empty foil coil it carries on the turret chuck. After completing the loading and docking, the second duplex AGV returns to place the empty foil coil on the pole coil buffer rack.

4. The automatic logistics conveying system for pole segments in a battery cell workshop according to claim 1 is characterized in that: The first single cantilever AGV sends the small pole roll formed by the die-cutting area to the pole roll temporary storage room for temporary storage; the second single cantilever AGV takes out the small pole roll from the pole roll temporary storage room and sends it to the winding room.

5. The automatic logistics conveying system for pole segments in a battery cell workshop according to claim 4 is characterized in that: The partition wall between the coating machine head room and the pole roll temporary storage room, and the partition wall between the pole roll temporary storage room and the winding room are equipped with automatic sensing fast rolling doors. When the first single-cantilever AGV enters and exits the pole roll temporary storage room and the second single-cantilever AGV enters and exits the winding room, the automatic sensing fast rolling door opens.

6. The automatic logistics conveying system for pole segments in a battery cell workshop according to claim 1 is characterized by: The coating machine heads are arranged in sequence along the feeding direction: coating machine loading mechanism, coating machine unloading mechanism, pole roll buffer rack, roller pressing and slitting machine loading mechanism, roller pressing and slitting machine unloading mechanism, laser die-cutting machine loading mechanism, laser die-cutting machine unloading mechanism.

7. The automatic logistics conveying system for pole segments in a battery workshop according to claim 1 is characterized by: The pole roll temporary storage room is used to arrange the pole roll vertical warehouse; the pole roll vertical warehouse is equipped with an incoming conveyor line for receiving materials and an outgoing conveyor line for conveying materials. The materials are stored in the pole roll vertical warehouse through stackers.

8. The automatic logistics conveying system for pole segments in a battery cell workshop according to claim 1 is characterized by: The winding room is sequentially arranged with a winding machine feeding mechanism, a winding machine unloading mechanism, a drawing belt conveyor line, and a hot press feeding mechanism along the material flow direction.

9. The automatic logistics conveying system for pole segments in a battery cell workshop according to claim 1 is characterized by: A partition wall is provided in the AGV logistics conveying room between the coating oven room and the coating machine head, and an automatic induction fast rolling door is provided on the partition wall; when the first double-station AGV passes through, the automatic induction fast rolling door opens.

10. A logistics conveying method of the automatic logistics conveying system for pole segments in a battery workshop as claimed in any one of claims 1 to 9, comprising: Foil loading: One station of the first double-station AGV carries the foil core, while the other station is empty; after the empty station takes out the empty foil roll from the coating area, it loads the foil core to the coating machine, and returns to the foil temporary storage room after the loading and docking is completed; Coating, rolling, slitting and transfer: The second double-station AGV stores the empty rolls at one station, and unloads the empty rolls to the coater after taking out the coated coils from the coater at the other station; The second dual-station AGV carries the coated coil at one station, and after the other station is unloaded and takes out the empty roll from the roller slitting area, it feeds the coated coil to the roller slitting machine.

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