Lithium battery assembly production line and process

Abstract

The present application relates to lithium battery production and manufacturing technical field, specifically disclose a kind of lithium battery assembly production line and process, including rack;A pair of conveying rollers is rotatably connected on the inner wall of the both ends of rack;The same conveying belt is sleeved on the outside of two conveying rollers;Driving motor is installed on the outer wall of rack;The output end of driving motor is coaxially fixed with the one end of any one of two conveying rollers;The shearing table for lead shearing, the stacking table for stacking, the detection table for battery detection and the packing table for battery packing are sequentially arranged on the outside of rack in the conveying direction along conveying belt;The workpiece transfer work on different stations is integrated by the continuous conveying of conveying belt, the labor intensity is reduced, and the battery assembly efficiency is improved.

Description

Technical Field

[0001] This invention relates to the field of lithium battery manufacturing technology, and in particular to a lithium battery assembly production line and process. Background Technology

[0002] Lithium-ion batteries are a type of battery that uses lithium metal or lithium alloy as the positive / negative electrode material and a non-aqueous electrolyte solution. They are widely used in daily life due to their advantages such as high energy density, long lifespan, low self-discharge rate, and light weight. Among them, the pouch lithium-ion battery, which has emerged in recent years, represents a leap forward in the performance of traditional lithium-ion batteries. The pouch lithium-ion battery has a plate-like body with two tabs representing the positive and negative electrodes at one end. The overall rigidity of pouch lithium-ion batteries is not high, thus posing certain challenges to automated production.

[0003] In the existing lithium battery assembly process, most of the steps such as electrode tab cutting, stacking and testing of the cells rely on manual operation. Therefore, it is necessary to transfer the cells to different working conditions. However, most of the existing transfer work is done manually, which is not only labor-intensive but also has low assembly production efficiency. Summary of the Invention

[0004] This application provides a lithium battery assembly production line and process, which features continuous conveying of battery cells via a conveyor belt, integrating the transfer of workpieces at different workstations, reducing the hassle of manual workpiece transfer, and improving assembly efficiency.

[0005] This application provides a lithium battery assembly production line and process, which adopts the following technical solution: A lithium battery assembly production line includes a frame; a pair of conveyor rollers are rotatably connected to the inner walls at both ends of the frame; the pair of conveyor rollers are arranged coaxially and at the same height, and the same conveyor belt is sleeved on the outside of the two conveyor rollers; a drive motor is installed on the outer wall of the frame; the output end of the drive motor is coaxially fixed to one end of either of the two conveyor rollers; a shearing table for pin shearing, a stacking table for stacking, a testing table for battery testing, and a packing table for battery packing are sequentially arranged on one side of the frame along the conveyor belt conveying direction.

[0006] By adopting the above technical solution, during battery assembly, the cells to be assembled are placed on a conveyor belt. When the drive motor is started, the two conveyor rollers and the conveyor belt work together to rotate the conveyor belt and transport the cells. The cells are then transported sequentially through the shearing table, stacking table, inspection table, and packing table. This facilitates the cutting of the battery tabs, stacking, BMS installation and inspection, and comprehensive packing and inspection of the cells. By using the conveyor belt to transport the cells, the transfer of workpieces at different stations is integrated, reducing manual labor intensity and improving battery assembly efficiency.

[0007] Preferably, the top surface of the shearing table is provided with a fixture; the top surface of the fixture is fixed to a top plate by a set of support columns; a pair of cylinders are vertically installed on the bottom surface of the top plate; each of the cylinders is provided with a cutter at its output end; and the top surface of the fixture is provided with two pairs of stop bars that can limit the movement of the battery cells.

[0008] By adopting the above technical solution, when the battery cell conveyed on the conveyor belt reaches the shearing table, the battery cell can be removed and placed on the fixture. The battery cell is limited by the stop bar. Then, the cylinder is started to drive the cutter to move down and cut the tabs of the battery cell. The cut battery cell is then conveyed by the conveyor belt.

[0009] Preferably, a through groove is provided on the top plate; a lead screw is rotatably connected to the inner wall of the through groove; a slider that is threadedly engaged with the lead screw is sleeved on the outside of the lead screw; a pair of cylinders are vertically mounted on the bottom surface of the slider; a first motor is installed on the outer wall of one end of the top plate; the output end of the first motor is coaxially fixed to one end of the lead screw.

[0010] By adopting the above technical solution, when the first motor is started and drives the lead screw to rotate, the slider sleeved on the outside of the lead screw will slide along the inner wall of the through groove to move the position of the cutter, so as to adjust the cutting position of the cutter according to the processing requirements and realize the cutting processing of different lengths of the tab.

[0011] Preferably, a first controller is provided on the outer wall of the shearing table; the first controller is electrically connected to both the first motor and the cylinder; an industrial camera is provided on the bottom surface of the slider; the industrial camera is electrically connected to the first controller.

[0012] By adopting the above technical solution, the industrial camera mounted on the bottom of the slider can scan and detect the battery cell placed on the fixture, identify the position of the battery cell tab, and transmit the detection result to the first controller. The first controller controls the first motor to work so that the slider can move to the designated position to cut the battery cell tab.

[0013] Preferably, a pair of first electric actuators are vertically arranged on the bottom surface of the top plate; the pair of first electric actuators are respectively located on the outer sides of the two sides in the width direction of the through groove, and a pressure plate is fixedly connected to the output end of each first electric actuator; a rubber pad is provided on the bottom surface of the pressure plate.

[0014] By adopting the above technical solution, when cutting the tabs of the battery cell, the first electric push rod is activated to drive the pressure plate to move down and press the cover on the surface of the battery cell to keep the battery cell stable, ensuring the quality of the battery cell tab cutting process. The rubber pad not only increases the friction between the pressure plate and the battery cell and improves the pressing effect, but also plays a role in holding the battery cell and reducing the possibility of battery cell damage.

[0015] Preferably, a receiving box is provided at the bottom of the shearing table; an air hood is provided on the outer wall of the fixture near the cutter; the open side of the air hood faces the top surface of the fixture; a pump body is provided on the outer wall of the shearing table; the pump body output end is provided with a feed pipe communicating with the air hood, and the pump body output end is provided with a discharge pipe communicating with the receiving box.

[0016] By adopting the above technical solution, when cutting the tabs of the battery cell, the pump body is started to generate negative pressure at the open end of the air hood. The cut tab waste is drawn into the air hood by the airflow and then transported to the receiving box for collection through the feed pipe and discharge pipe, thereby collecting the tab waste and ensuring the cleanliness of the fixture table.

[0017] Preferably, an electromagnetic slide rail is horizontally mounted on the top surface of the stacking platform via a column; an electromagnetic slide plate is slidably mounted on the electromagnetic slide rail; a second electric push rod is vertically mounted on the outer wall of the electromagnetic slide plate; a vacuum suction cup is provided at the output end of the second electric push rod; a photoelectric sensor capable of detecting the position of the battery cell is provided on the bottom surface of the end of the electromagnetic slide rail that extends to the top of the conveyor belt; a second controller electrically connected to the photoelectric sensor is provided on the outer wall of the column; the second controller is electrically connected to the electromagnetic slide rail, the second electric push rod, and the vacuum suction cup.

[0018] By adopting the above technical solution, when the cut battery cells are transported to the stacking platform, the photoelectric sensor detects the battery cells transported on the conveyor belt. The second controller controls the second electric push rod to drive the vacuum suction cup to move down and adsorb the battery cells. Then, it drives the battery cells to move up. Then, through the cooperation of the electromagnetic slide rail and the electromagnetic sliding plate, the adsorbed battery cells are moved to the stacking platform for placement, realizing the convenient transportation of battery cells on the conveyor belt, so that workers can assemble multiple battery cells into battery packs on the stacking platform.

[0019] Preferably, the top surface of the testing platform is equipped with a BMS tester and a charge / discharge test device.

[0020] By adopting the above technical solution, BMS installation, wiring harness connection, BMS activation and parameter configuration, and charge / discharge testing can be integrated into the same workstation on the testing platform using a BMS tester and charge / discharge testing equipment, achieving one-stop testing.

[0021] Preferably, a battery pack comprehensive tester is provided on the top surface of the packing platform.

[0022] By adopting the above technical solution, a waterproof sleeve is placed on the battery pack on the packing table, and glue is applied for sealing treatment. Finally, the battery pack is placed into the box, and a battery pack comprehensive tester is used to conduct a comprehensive test on the packed battery pack.

[0023] A lithium battery assembly process, based on the aforementioned lithium battery assembly production line, includes the following steps:

[0024] S1. Cell pretreatment: Inspect the incoming cells and place them sequentially on the conveyor belt for transport in order to carry out subsequent processing and assembly work; S2, tab cutting: The conveyed battery cell is removed and placed on the shearing table. The battery cell tab is cut by a cutter, and the cut battery cell is conveyed to the next working position by a conveyor belt. S3, Cell Stacking: Multiple cells with cut tabs are removed and placed on a stacking platform. On the stacking platform, the cells are stacked in sequence, connecting plates are assembled, weather-resistant adhesive is applied, and tabs are leveled to form a battery pack. The battery pack is then transported to the next working position via a conveyor belt. S4. Battery Pack Inspection: Remove the conveyed battery pack and place it on the inspection table. Use the BMS tester and charge / discharge test equipment to inspect the battery pack. Then, transport the qualified products to the next working position via the conveyor belt. S5. Packing and Inspection: Place the qualified battery packs on the packing table, and sequentially apply waterproof sleeves, perform waterproof sealing treatment, affix qualified labels, pack and install GPS. Then, use a battery pack comprehensive tester to conduct comprehensive testing on the packed battery packs to complete the overall battery assembly.

[0025] In summary, this application has the following beneficial effects: 1. Start the drive motor to make the conveyor belt rotate and transport the battery cells. The battery cells pass through the shearing table, stacking table, inspection table and packing table in sequence. The conveyor belt transports the battery cells and integrates the transfer of workpieces at different stations. This enables the battery cells to perform tab cutting, stacking, BMS installation and inspection and packing inspection, reducing the trouble of frequent manual transfer of workpieces and improving battery assembly efficiency. 2. When cutting the tabs, the first motor can be started to drive the lead screw to rotate, causing the slider outside the lead screw to slide along the inner wall of the through groove, thereby moving the position of the cutter. This allows the cutting position of the cutter to be adjusted according to the processing requirements, enabling the cutting of tabs of different lengths. 3. When the photoelectric sensor detects the battery cell being transported on the conveyor belt, the second controller controls the second electric push rod to move the vacuum suction cup downward to adsorb the battery cell, and then moves the battery cell upward. Then, through the cooperation of the electromagnetic slide rail and the electromagnetic sliding plate, the adsorbed battery cell is moved to the stacking platform for placement, realizing the convenient transportation of battery cells on the conveyor belt so that multiple battery cells can be assembled into a battery pack. Attached Figure Description

[0026] Figure 1 This is a schematic diagram of the structure of a lithium battery assembly production line according to this application; Figure 2 This is a schematic diagram of the mating structure of the frame and conveyor belt in this application; Figure 3 This is a structural schematic diagram of the shearing table and the equipment arranged on it in this application; Figure 4 This is a schematic diagram of the cooperative structure of the slider, cylinder and cutter in this application; Figure 5 This is a schematic diagram of the cooperative structure of the electromagnetic slide rail, the second electric push rod, and the vacuum chuck in this application; Figure 6 This is a structural schematic diagram of the testing station and the equipment arranged on it in this application; Figure 7 This is a structural schematic diagram of the packing platform and the equipment arranged on it in this application.

[0027] Explanation of reference numerals in the attached drawings: 1. Frame; 11. Conveyor roller; 12. Conveyor belt; 13. Drive motor; 2. Shearing table; 21. Fixture; 211. Stop bar; 22. Support column; 23. Top plate; 231. Through groove; 24. Lead screw; 25. Slider; 26. First motor; 27. First controller; 28. Industrial camera; 29. ​​First electric actuator; 291. Pressure plate; 292. Rubber pad; 3. Stacking table; 31. Vertical... Column; 32. Electromagnetic slide rail; 321. Electromagnetic slide plate; 33. Second electric push rod; 34. Vacuum suction cup; 35. Photoelectric sensor; 36. Second controller; 4. Testing table; 41. BMS tester; 42. Charge and discharge test equipment; 5. Packing table; 51. Battery pack comprehensive tester; 6. Cylinder; 61. Cutter; 7. Receiving box; 71. Exhaust hood; 72. Pump body; 721. Feed pipe; 722. Discharge pipe. Detailed Implementation

[0028] The present invention will be further described in detail below with reference to the accompanying drawings. Identical components are indicated by the same reference numerals. It should be noted that the terms "front," "rear," "left," "right," "upper," "lower," "bottom," and "top" used in the following description refer to directions in the drawings, while the terms "inner" and "outer" refer to directions toward or away from the geometric center of a specific component, respectively.

[0029] This invention discloses a lithium battery assembly production line, such as... Figure 1 and Figure 2As shown, the system includes a frame 1, a conveyor belt 12, and a drive motor 13. A pair of conveyor rollers 11, arranged coaxially and at the same height, are horizontally rotatably connected to the inner wall of the frame 1. The two conveyor rollers 11 are located at both ends of the frame 1. The conveyor belt 12 is tensioned and fitted around the two conveyor rollers 11, driving the two conveyor rollers 11 to move together. The drive motor 13 is horizontally mounted on the outer wall of one end of the frame 1. The output end of the drive motor 13 is coaxially fixed to the end of either of the two conveyor rollers 11. Multiple support rollers are evenly distributed on the inner wall of the frame 1 between the two conveyor rollers 11. The multiple support rollers are arranged coaxially and at the same height as the conveyor rollers 11. A shearing table 2, a stacking table 3, a testing table 4, and a packing table 5 are provided on one side of the frame 1. The shearing table 2, the stacking table 3, the testing table 4, and the packing table 5 are arranged at intervals along the conveying direction of the conveyor belt 12 and can be used for shearing the battery cell tabs, stacking the battery cells, testing the battery pack, and packing the battery.

[0030] When the drive motor 13 is started, the two conveyor rollers 11 and the conveyor belt 12 work together to make the conveyor belt 12 rotate and transport the battery cells so that the battery cells pass through the shearing table 2, the stacking table 3, the inspection table 4 and the box in sequence. By using the conveyor belt 12 to continuously transport the battery cells, the transfer of workpieces at different workstations is integrated, reducing the intensity of manual labor and improving the efficiency of battery assembly.

[0031] like Figure 1 , Figure 3 and Figure 4 As shown, a fixture 21 is fixedly connected to the top surface of the shearing table 2. A horizontal top plate 23 is fixedly connected to the top surface of the fixture 21 through a set of vertically arranged support columns 22. A through groove 231 is opened on the top plate 23. A first motor 26 is horizontally installed on the outer wall of the bottom end of the top plate 23. A lead screw 24 extending into the through groove 231 is coaxially fixed to the output end of the first motor 26. A slider 25 that is threadedly driven and connected to the lead screw 24 is sleeved on the outside of the lead screw 24. The slider 25 slides in contact with the inner wall of the through groove 231. A pair of cylinders 6 are vertically installed on the bottom surface of the slider 25. Each cylinder 6 has a cutter 61 at its output end. Two pairs of vertically arranged stop bars 211 are provided on the top surface of the fixture 21. The two pairs of stop bars 211 can limit the movement of the battery cell.

[0032] When cutting the battery cell tabs, the battery cell is placed on the fixture 21 and limited by two pairs of stop rods 211. The first motor 26 is started to drive the lead screw 24 to rotate, so that the slider 25 moves along the axial direction of the lead screw 24 to move the cylinder 6 and the cutter 61 to a suitable position, so that the cylinder 6 drives the cutter 61 to move down to cut the battery cell tabs.

[0033] like Figure 3 and Figure 4As shown, an industrial camera 28 is mounted on the bottom surface of the slider 25, and a first controller 27 is provided on the outer wall of the shearing table 2. The input terminal of the first controller 27 is electrically connected to the industrial camera 28, and the output terminal of the first controller 27 is electrically connected to the first motor 26 and the cylinder 6. The first controller 27 controls the first motor 26 and the cylinder 6 to work.

[0034] The industrial camera 28 is used to scan and detect the battery cell and identify the position of the battery cell tab. Then, the first controller 27 controls the first motor 26 to work, causing the slider 25 to drive the cylinder 6 and the cutter 61 to move to the designated position for cutting.

[0035] like Figure 3 and Figure 4 As shown, a pair of first electric actuators 29 are vertically installed on the top surface of the top plate 23. The two first electric actuators 29 are located on the outer sides of the two sides in the width direction of the through groove 231, respectively. Each electric actuator output end is fixedly connected to a horizontally set pressure plate 291, and a rubber pad 292 is fixedly connected to the bottom surface of the pressure plate 291.

[0036] When cutting the tabs of the battery cell, the first electric push rod 29 is activated to move the pressure plate 291 down to press the cover on the surface of the battery cell to keep the battery cell stable and ensure the quality of the battery cell tab cutting process. The rubber pad 292 not only increases the pressing effect of the pressure plate 291, but also reduces the possibility of damage to the battery cell.

[0037] like Figure 3 and Figure 4 As shown, the bottom surface of the shearing table 2 is provided with a receiving box 7 for holding waste materials. The fixture 21 has an exhaust hood 71 fixedly connected to the outer wall of one end near the cutter 61. The open side of the exhaust hood 71 faces the top surface of the fixture 21 and is connected to the bottom surface of the fixture 21. A pump body 72 is installed on the outer wall of the shearing table 2. The input end of the pump body 72 is provided with a feed pipe 721 connected to the exhaust hood 71, and the output end of the pump body 72 is provided with a discharge pipe 722 connected to the receiving box 7.

[0038] When shearing the tabs, the pump body 72 is activated to generate negative pressure at the open end of the air hood 71. The tab waste is drawn into the air hood 71 by the airflow and transported to the receiving box 7 for collection, so as to ensure the cleanliness of the fixture 21 table and reduce the trouble of manually cleaning the table.

[0039] like Figure 1 and Figure 5As shown, an electromagnetic slide rail 32 is horizontally mounted on the top surface of the stacking platform 3 via a vertical column 31; one end of the electromagnetic slide rail 32 is located at the top of the conveyor belt 12, and the other end is located at the top of the stacking platform 3. An electromagnetic slide plate 321 is slidably mounted on the outer wall of the electromagnetic slide rail 32; a second electric push rod 33 is vertically mounted on the outer wall of the electromagnetic slide plate 321; a vacuum suction cup 34 is provided at the output end of the second electric push rod 33; a photoelectric sensor 35 for detecting the position of the battery cell is provided on the bottom surface of the end of the electromagnetic slide rail 32 that extends to the top of the conveyor belt 12; a second controller 36 is provided on the outer wall of the column 31, with its input end electrically connected to the photoelectric sensor 35; the output end of the second controller 36 is electrically connected to the electromagnetic slide rail 32, the second electric push rod 33, and the vacuum suction cup 34, and the second controller 36 controls the operation of the electromagnetic slide rail 32, the second electric push rod 33, and the vacuum suction cup 34.

[0040] When the photoelectric sensor 35 detects the battery cell being transported on the conveyor belt 12, the second controller 36 controls the second electric push rod 33 to move the vacuum suction cup 34 down to adsorb the battery cell, and then moves the battery cell up. Then, through the cooperation of the electromagnetic slide rail 32 and the electromagnetic sliding plate 321, the adsorbed battery cell is moved to the stacking platform 3 for placement, so as to realize the convenient transportation of the battery cell, so that the battery cell can be assembled on the stacking platform 3 to form a battery pack.

[0041] like Figure 1 and Figure 6 As shown, the top surface of the test station 4 is equipped with a BMS tester 41 and a charge / discharge test device 42. Both the BMS tester 41 and the charge / discharge test device 42 are existing technologies and will not be described in detail here.

[0042] The BMS installation, wiring harness connection, BMS activation and parameter configuration, and charge / discharge testing are integrated into the test bench 4. The battery pack is tested by the BMS tester 41 and the charge / discharge testing equipment 42, realizing one-stop testing.

[0043] like Figure 1 and Figure 7 As shown, a battery pack comprehensive tester 51 is installed on the top surface of the packing platform 5. The battery pack comprehensive tester 51 is existing technology and will not be described in detail here.

[0044] When packing the battery pack on the packing table 5, the packed batteries can be tested by the battery pack comprehensive tester 51 to complete the battery assembly work.

[0045] A lithium battery assembly process, comprising the following steps:

[0046] S1. Cell pretreatment: Inspect the incoming cells and place them sequentially on conveyor belt 12 for transport in order to carry out subsequent processing and assembly work. S2, tab cutting: The conveyed battery cell is removed and placed on the shearing table 2. The battery cell tab is cut by the cutter 61, and the cut battery cell is conveyed to the next working position by the conveyor belt 12. S3, Cell Stacking: Remove multiple cells with cut tabs and place them on stacking platform 3, arranging 17 cells neatly in one stack, and attach insulating spacers between adjacent cells; then assemble connecting plates on the ends of the cells, folding the positive terminal upwards and the negative terminal downwards, connecting the 17 cells in series to form a cell group; next, place foam pads at the bottom of the inner box, attach insulating spacers to the narrow side, assemble the connected cells into the inner box, and apply weather-resistant adhesive between the opening edge of the inner box and the cell group; finally, flatten the tabs to ensure they fit tightly against the aluminum strips on the connecting plate, and fix the positive / negative tabs to the connecting plate with screws to form a battery pack, and transport the battery pack to the next working position via conveyor belt 12; S4. Battery Pack Inspection: Remove the conveyed battery pack and place it on the inspection table 4. Use the BMS tester 41 to inspect the BMS of the battery pack. Then connect the battery pack to the charge and discharge test equipment 42, ensuring a secure connection with the positive terminal connected to the positive terminal and the negative terminal connected to the negative terminal. Open the battery test system software, select the process route, and use the charge and discharge test equipment 42 to scan the SN code on the BMS. Observe the discharge and static pressure difference. If the discharge and static pressure difference is ≤50mV, it is considered qualified. Then, convey the qualified product to the next working position via the conveyor belt 12. S5. Packing Inspection: Place the qualified battery packs on the packing table 5. Install a waterproof sleeve on the outside of the battery pack. After the battery pack's wiring leads out, apply weather-resistant adhesive to the joints of the waterproof sleeve and the wiring leads to seal them. Affix a qualified label to the surface of the waterproof sleeve. Then, pack the battery pack with the waterproof sleeve installed into the box. Install a GPS device on the box cover. Then, organize and fix the wiring to secure the box cover to the box body to complete the packing. Finally, after the battery packs are packed, use the battery pack comprehensive tester 51 to perform a comprehensive test on the packed battery packs to complete the overall battery assembly.

[0047] Working principle: During battery assembly, the drive motor 13 is started to drive the two conveyor rollers 11 and the conveyor belt 12 to rotate, and the battery cells to be assembled are placed on the conveyor belt 12 for sequential transport. When the battery cells are transported to the designated work station near the shearing table 2, the battery cells are removed and placed on the fixture 21. The industrial camera 28 set on the top surface of the slider 25 scans and detects the placement position and tab length of the battery cells. After analyzing the data transmitted by the industrial camera 28, the first controller 27 controls the first motor 26 to work. The first motor 26 drives the lead screw 24 to rotate, causing the slider 25 to move the cutter 61 to the appropriate cutting position. During cutting, the first electric push rod 29 drives the pressure plate 291 to move down and press the battery cells to keep the battery cell position stable. Then the cylinder 6 drives the cutter 61 to move down and cut the battery cell tabs. After cutting, the battery cells are placed on the conveyor belt 12 for transport. When the cut battery cells are transported to the designated workstation near the stacking table 3, the photoelectric sensor 35 detects the battery cells, and the second controller 36 controls the second electric push rod 33 to drive the vacuum suction cup 34 to move down to attract the battery cells and move the battery cells up. Then, through the cooperation of the electromagnetic slide rail 32 and the electromagnetic slide plate 321, the attracted battery cells are moved to the stacking table 3 for stacking. After the battery cells are stacked into a battery pack, the battery pack is placed on the conveyor belt 12 for transport. When the battery pack is transported to the work station near the test station 4, the battery pack is removed and placed on the test station 4. The BMS installation, wiring harness connection, BMS activation and parameter configuration, and charge and discharge test can be integrated into the same work station through the BMS tester 41 and the charge and discharge test equipment 42 to achieve one-stop testing. The battery pack that passes the test is then transported by the conveyor belt 12. When the qualified battery packs are transported to the workstation near the packing table 5, the battery packs are removed and a waterproof sleeve is put on the packing table 5, and then glue is applied for sealing. Finally, the battery packs are put into the box, and the battery packs are tested by the battery pack comprehensive tester 51 to complete the overall battery assembly.

[0048] The above are all preferred embodiments of this application and are not intended to limit the scope of protection of this application. Therefore, all equivalent changes made in accordance with the structure, shape and principle of this application should be covered within the scope of protection of this application.

Claims

1. A lithium battery assembly production line, characterized in that: The frame includes a frame (1); a pair of conveyor rollers (11) are rotatably connected to the inner walls at both ends of the frame (1); the pair of conveyor rollers (11) are arranged coaxially and at the same height, and the same conveyor belt (12) is sleeved on the outside of the two conveyor rollers (11); a drive motor (13) is installed on the outer wall of the frame (1); the output end of the drive motor (13) is coaxially fixed to one end of either of the two conveyor rollers (11); on one side of the frame (1), a shearing table (2) for pin shearing, a stacking table (3) for stacking, a testing table (4) for battery testing and a packing table (5) for battery packing are arranged sequentially along the conveying direction of the conveyor belt (12).

2. The lithium battery assembly production line according to claim 1, characterized in that: The shearing table (2) is provided with a fixture (21) on its top surface; a top plate (23) is fixed to the top surface of the fixture (21) by a set of support columns (22); a pair of cylinders (6) are vertically installed on the bottom surface of the top plate (23); a cutter (61) is provided at the output end of each pair of cylinders (6); and two pairs of stop bars (211) are provided on the top surface of the fixture (21) to limit the movement of the battery cell.

3. A lithium battery assembly production line according to claim 2, characterized in that: A through groove (231) is provided on the top plate (23); a lead screw (24) is rotatably connected to the inner wall of the through groove (231); a slider (25) is sleeved on the outside of the lead screw (24) and is threadedly driven to engage with the lead screw (24); a pair of cylinders (6) are vertically installed on the bottom surface of the slider (25); a first motor (26) is installed on the outer wall of one end of the top plate (23); the output end of the first motor (26) is coaxially fixed to one end of the lead screw (24).

4. A lithium battery assembly production line according to claim 3, characterized in that: A first controller (27) is provided on the outer wall of the shearing table (2); the first controller (27) is electrically connected to the first motor (26) and the cylinder (6); an industrial camera (28) is provided on the bottom surface of the slider (25); the industrial camera (28) is electrically connected to the first controller (27).

5. A lithium battery assembly production line according to claim 3, characterized in that: A pair of first electric actuators (29) are vertically arranged on the bottom surface of the top plate (23); the pair of first electric actuators (29) are located on the outer sides of the width direction of the through groove (231), and each first electric actuator (29) has a pressure plate (291) fixedly connected to its output end; a rubber pad (292) is provided on the bottom surface of the pressure plate (291).

6. A lithium battery assembly production line according to claim 2, characterized in that: The shearing table (2) is provided with a receiving box (7) at the bottom; the fixture (21) is provided with an air hood (71) on the outer wall near the cutter (61); the air hood (71) is arranged with its open side facing the top surface of the fixture (21); the shearing table (2) is provided with a pump body (72); the pump body (72) is provided with an inlet pipe (721) communicating with the air hood (71) at its output end, and an outlet pipe (722) communicating with the receiving box (7) at its output end.

7. A lithium battery assembly production line according to claim 1, characterized in that: The top surface of the stacking platform (3) is horizontally mounted with an electromagnetic slide rail (32) via a column (31); an electromagnetic slide plate (321) is slidably mounted on the electromagnetic slide rail (32); a second electric push rod (33) is vertically mounted on the outer wall of the electromagnetic slide plate (321); a vacuum suction cup (34) is provided at the output end of the second electric push rod (33); a photoelectric sensor (35) for detecting the position of the battery cell is provided on the bottom surface of one end of the electromagnetic slide rail (32) that extends to the top of the conveyor belt (12); a second controller (36) electrically connected to the photoelectric sensor (35) is provided on the outer wall of the column (31); the second controller (36) is electrically connected to the electromagnetic slide rail (32), the second electric push rod (33) and the vacuum suction cup (34).

8. A lithium battery assembly production line according to claim 1, characterized in that: The top surface of the testing station (4) is equipped with a BMS tester (41) and a charge / discharge test device (42).

9. A lithium battery assembly production line according to claim 1, characterized in that: A battery pack comprehensive tester (51) is installed on the top surface of the packing platform (5).

10. A lithium battery assembly process, based on a lithium battery assembly production line according to any one of claims 1-9, characterized in that: The process includes the following steps: S1. Cell pretreatment: Inspect the incoming cells and place them sequentially on the conveyor belt (12) for transport in order to carry out subsequent processing and assembly work; S2, tab cutting: The conveyed battery cell is removed and placed on the shearing table (2). The battery cell tab is cut by the cutter (61), and the cut battery cell is conveyed to the next working position by the conveyor belt (12). S3, Cell stacking: Take out multiple cells with cut tabs and place them on the stacking platform (3). On the stacking platform (3), stack the cells in sequence, assemble the connecting plate, apply weather-resistant adhesive and flatten the tabs to form a battery pack. Then, transport the battery pack to the next working position via the conveyor belt (12). S4. Battery pack inspection: Remove the conveyed battery pack and place it on the inspection table (4). Use the BMS tester (41) and charge / discharge test equipment (42) to inspect the battery pack. Then, transport the qualified products to the next working position via the conveyor belt (12). S5. Packing and Inspection: Place the qualified battery packs on the packing table (5), and sequentially apply waterproof sleeves, waterproof sealing treatment, attach qualified labels, pack and install GPS. Then, use the battery pack comprehensive tester (51) to conduct comprehensive inspection on the packed battery packs to complete the overall battery assembly work.

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