Prismatic battery cell production line

Abstract

A prismatic battery cell production line, comprising: a battery cell section processing system, a module section processing system, and a Pack section processing system which are sequentially arranged in a processing direction. The battery cell section processing system comprises a battery cell transfer device, a battery cell adhesive-application device, and a partition plate feeding device which are sequentially arranged in the processing direction; the battery cell transfer device is used for enabling battery cells to be on the production line, the battery cell adhesive-application device is used for applying an adhesive onto the battery cells, and the partition plate feeding device is used for enabling partition plates to be on the production line so that the partition plates are adhered to the battery cells; and the module section processing system comprises a battery cell module stacking device, a battery cell module strapping and pressing device, a busbar welding device, and a battery cell module clamping device which are sequentially arranged in the processing direction.

Description

A square battery cell production line

[0001] CROSS-REFERENCE TO RELATED APPLICATIONS

[0002] This application claims priority to Chinese invention patent application No. 202310726648.6, filed on June 19, 2023, entitled “A Laser Welding System and Method,” which is incorporated herein by reference in its entirety. Technical Field

[0003] The present application relates to the field of battery production technology, and in particular to a square battery cell production line. Background Art

[0004] The smallest unit of a battery pack is the cell, which is the energy storage unit; multiple cells are stacked together to form a module. Within the power lithium battery industry, the production of battery packs on module assembly lines often requires manual processing of many steps, which not only reduces safety but also severely impacts production efficiency and makes it difficult to ensure battery quality.

[0005] Therefore, there is an urgent need for a battery production line that can automate production to solve the above problems.

[0006] Summary of the Invention

[0007] An embodiment of the present application provides a square battery cell production line to solve the problem that the existing battery pack production requires manual processing of many steps, which not only has low safety, but also seriously affects production efficiency and makes it difficult to ensure the production quality of batteries.

[0008] The present application provides a square battery cell production line, comprising: a battery cell segment processing system, a module segment processing system and a pack segment processing system arranged in sequence along a processing direction; the battery cell segment processing system comprises a battery cell transfer device, a battery cell gluing device and a partition feeding device arranged in sequence along the processing direction, the battery cell transfer device is used to put the battery cell online, the battery cell gluing device is used to glue on the battery cell, and the partition feeding device is used to put the partition online so that the partition is adhered to the battery cell; the module segment processing system comprises a battery cell segment processing system arranged in sequence along the processing direction A cell module stacking device, a cell module bundling and extrusion device, a busbar welding device and a cell module clamping device. The cell module stacking device is used to stack the cells that have completed the partition installation to form a cell module. The cell module bundling and extrusion device is used to shape the cell modules. The busbar welding device is used to perform busbar welding on the cell modules after the shaping is completed. The cell module clamping device is used to transport the cell modules. The Pack segment processing system is used to pack the processed cell modules.

[0009] The square battery cell production line provided in the present application is provided with a battery cell segment processing system, a module segment processing system and a pack segment processing system. The battery cell segment processing system includes a battery cell transfer device, a battery cell gluing device and a partition feeding device which are arranged in sequence along the processing direction. The battery cell transfer device is used to put the battery cell online, the battery cell gluing device is used to glue on the battery cell, and the partition feeding device is used to put the partition online so that the partition is adhered to the battery cell; the module segment processing system includes a battery cell module stacking device, a battery cell module bundling and extrusion device, a busbar welding device and a battery cell module clamping device which are arranged in sequence along the processing direction. The battery cell module stacking device is used to stack the battery cells with completed partition installation to form a battery cell module, the battery cell module bundling and extrusion device is used to shape the battery cell module, the busbar welding device is used to perform busbar welding on the battery cell module after the shaping is completed, and the battery cell module clamping device is used to transfer the battery cell module; the pack segment processing system is used to pack the processed battery cell modules. This automatically completes the processing of the battery cell section, module section and pack section, greatly improving the production efficiency of the battery cell. BRIEF DESCRIPTION OF THE DRAWINGS

[0010] In order to more clearly illustrate the embodiments of the present application or the technical solutions in the prior art, a brief introduction will be given below to the drawings required for use in the embodiments or the description of the prior art. Obviously, the drawings described below are some embodiments of the present application. For ordinary technicians in this field, other drawings can be obtained based on these drawings without any creative work.

[0011] FIG1 is a schematic diagram of a square battery cell production line provided in one embodiment of the present application;

[0012] FIG2 is a schematic diagram of a battery cell transport device provided in one embodiment of the present application;

[0013] FIG3 is a schematic diagram of a variable-distance gripping mechanism for a battery cell according to an embodiment of the present application;

[0014] FIG4 is a second schematic diagram of a cell variable distance gripping mechanism provided in one embodiment of the present application;

[0015] FIG5 is a third schematic diagram of a cell variable distance gripping mechanism provided in one embodiment of the present application;

[0016] FIG6 is a fourth schematic diagram of a cell variable distance gripping mechanism provided in one embodiment of the present application;

[0017] FIG7 is a schematic diagram of a battery cell gluing device provided in one embodiment of the present application;

[0018] FIG8 is a schematic diagram of a separator loading device according to an embodiment of the present application;

[0019] FIG9 is a schematic diagram of the three-dimensional structure of the battery cell module stacking device provided in this application;

[0020] FIG10 is a schematic structural diagram of the mounting plate in FIG9 ;

[0021] FIG11 is a schematic structural diagram of the positioning assembly in FIG9 ;

[0022] FIG12 is a schematic diagram of the three-dimensional structure of the battery cell fixture in FIG9 ;

[0023] FIG13 is a schematic diagram of the three-dimensional structure of an embodiment of the battery cell stacking device in FIG9 .

[0024] FIG14 is a schematic structural diagram of a battery module extrusion and bundling device provided in the present application;

[0025] FIG15 is a schematic structural diagram of the pressing mechanism provided in the present application;

[0026] FIG16 is a schematic diagram of the transfer mechanism provided by the present application;

[0027] FIG17 is a schematic structural diagram of a first shaping assembly provided by the present application;

[0028] FIG18 is a schematic structural diagram of a battery cell module clamping device provided in the present application;

[0029] FIG19 is a partial structural diagram of a battery cell module clamping device provided by the present application;

[0030] FIG20 is a second partial structural diagram of the battery cell module clamping device provided by the present application;

[0031] Figure 21 is a schematic diagram of the local structure of area A in Figure 20 provided by this application.

[0032] Reference numerals

[0033] 1. Battery cell segment processing system;

[0034] 11. Cell transfer device; 1110. Square cell; 1120. Material tray; 1130. Robotic arm; 1140. Grasping mechanism; 11401. Base; 11402. Pitch-changing assembly; 114021. Fixed block; 114022. Slider; 114023. First drive assembly; 114024. Cell gripper; 114025. Limiting rod; 114026. Limiting member; 11 4027, first slider; 114028, second slider; 114029, third slider; 114030, fourth slider; 11403, gripping assembly; 1150, tray-off mechanism; 11501, tray-off assembly; 11502, second drive assembly; 1160, tray gripping mechanism; 11601, tray clamping jaw; 11602, third drive assembly; 1170, visual inspection mechanism;

[0035] 12. Battery cell gluing device; 1211. Unwinding reel; 1212. Rewinding reel; 1213. Roller assembly; 1214. Drive motor;

[0036] 13. Partition loading device; 1311. Partition loading device; 1312. Conveyor line; 1313. Partition loading device; 1314. Partition cleaning device; 1315. Partition installation device; 13111. Feeding cart; 13112. Carriage guiding and positioning mechanism; 13113. Air duct partition storage unit; 13114. Guide wheel; 13131. First drive mechanism; 13132. Retrieving mechanism; 13141. Partition cleaning mechanism; 13142. Partition turning mechanism; 13151. Second drive mechanism; 13152. Assembly mechanism;

[0037] 2. Module segment processing system; 21. Cell module stacking device; 211. Mounting plate; 2111. Backing plate; 2112. Slide rail; 212. Positioning assembly; 2121. Positioning plate; 2122. Support block; 2123. Positioning jaws; 213. Cell fixture; 2131. Fixture bracket; 21321. Cell support jaws; 21322. First drive member; 21331. Centering jaws; 21332. Drive assembly; 21341. Extrusion member; 21342. Second drive member; 214. Lifting member; 2151. Frame; 2152. Turntable bracket;

[0038] 22. Cell module bundling and extrusion device; 221. Stand; 2211. Slide; 222. Transfer mechanism; 2221. Extrusion assembly; 22211. First extrusion head; 22212. Second extrusion head; 22213. Third driving member; 2222. Prefabricated groove for steel strip; 223. Shaping mechanism; 2231. First shaping assembly; 22311. Shaping plate; 22312. Second driving member; 22313. Guide rail; 22314. Limiting structure; 224. Cell module; 225. Pressing mechanism; 2251. Mounting frame; 2252. First driving member; 2253. Pressing head; 2254. Guide structure; 226. Pressure sensor;

[0039] 23. Busbar welding device; 24. Cell module clamping device; 241. First side pressure plate; 2421. First end plate; 2422. Second end plate; 243. Clamping claw; 244. Mounting plate; 245. First fixing member; 246. Second fixing member; 247. Limiting member; 248. Driving member; 249. First cylinder; 2410. Second cylinder; 2411. Pad; 2412. Connecting member; 2413. Manipulator; 2414. Cell module; 3. Pack section processing system; 31. Box on-line station; 32. Cell module box-entering station; 33. Accessory installation station; 34. Testing station. DETAILED DESCRIPTION

[0040] The square battery cell production line provided by the present application is described below with reference to Figures 1 to 3.

[0041] As shown in Figure 1, the square battery cell production line provided in this application includes: a battery cell segment processing system 1, a module segment processing system 2 and a pack segment processing system 3.

[0042] In this embodiment, the cell segment processing system 1 , the module segment processing system 2 and the pack segment processing system 3 are sequentially arranged along the processing direction. The cell segment processing system 1 includes a cell transfer device 11, a cell gluing device 12 and a partition feeding device 13 which are sequentially arranged along the processing direction. The cell transfer device 11 is used to put the cell online, the cell gluing device 12 is used to glue the cell, and the partition feeding device 13 is used to put the partition online so that the partition is adhered to the cell; the module segment processing system 2 includes a cell module stacking device 21, a cell module bundling and extrusion device 22, a busbar welding device 23 and a cell module clamping device 24 which are sequentially arranged along the processing direction. The cell module stacking device 21 is used to stack the cells with completed partition installation to form a cell module, the cell module bundling and extrusion device 22 is used to shape the cell module, the busbar welding device 23 is used to perform busbar welding on the cell module after the shaping is completed, and the cell module clamping device 24 is used to transfer the cell module; the pack segment processing system 3 is used to pack the processed cell modules.

[0043] During operation, the square cell production line first processes the cell segments. The cell transfer device 11 is used to put the cells online. After the cells are online, the cell gluing device 12 glues the cells. After gluing is completed, the partition feeding device 13 puts the partitions online so that the partitions are adhered to the cells, thereby completing the processing of the cell segments using the cell segment processing system 1. After the processing of the cell segments is completed, the module segment processing begins. The cell module stacking device 21 is used to stack the cells with partitions installed to form cell modules. After stacking is completed, the cell module bundling and extrusion device 22 shapes the stacked cell modules. The busbar welding device 23 performs busbar welding on the shaped cell modules. After the busbar welding is completed, the cell module clamping device 24 transfers the cell modules to the pack segment processing system 3. After the module segment processing is completed, the pack segment processing system 3 packs the processed cell modules.

[0044] The square battery cell production line provided in the present application is provided with a battery cell segment processing system, a module segment processing system and a pack segment processing system. The battery cell segment processing system includes a battery cell transfer device, a battery cell gluing device and a partition feeding device which are arranged in sequence along the processing direction. The battery cell transfer device is used to put the battery cell online, the battery cell gluing device is used to glue on the battery cell, and the partition feeding device is used to put the partition online so that the partition is adhered to the battery cell; the module segment processing system includes a battery cell module stacking device, a battery cell module bundling and extrusion device, a busbar welding device and a battery cell module clamping device which are arranged in sequence along the processing direction. The battery cell module stacking device is used to stack the battery cells with completed partition installation to form a battery cell module, the battery cell module bundling and extrusion device is used to shape the battery cell module, the busbar welding device is used to perform busbar welding on the battery cell module after the shaping is completed, and the battery cell module clamping device is used to transfer the battery cell module; the pack segment processing system is used to pack the processed battery cell modules. This automatically completes the processing of the battery cell section, module section and pack section, greatly improving the production efficiency of the battery cell.

[0045] In one embodiment, as shown in FIG1 , the Pack segment processing system 3 is provided with a box body online station 31, a cell module boxing station 32, an accessory installation station 33 and a test station 34, which are arranged in sequence along the processing direction; the box body online station 31 is used to transfer the box body to the production line, the cell module boxing station 32 is used to import the cell module into the box body, the accessory installation station 33 is used to install the accessories of the cell module, and the test station 34 is used to test the installed cell module. Specifically, after completing the processing of the module segment, the box body is first transferred to the production line through the box body online station 31. The box body online station 31 is mainly composed of material racks, vacuum cleaners and other equipment. The box body is cleaned by using a vacuum cleaner, and the cantilever crane is used to lift the plug-in box to the production line. At the same time, the box body online station 31 can also use a cantilever crane, a barcode scanner, an all-in-one machine and other equipment to lift the module into the box through the cantilever crane. After the packing is completed, the accessory installation station 33 can be used to install the accessories of the battery module, and after the installation is completed, the installed battery module will be tested at the test station 34. The test station 34 is mainly composed of EOL (End-of-life, project termination) test equipment, barcode scanners, tablet computers and other equipment. The packing is confirmed by scanning the code, and the wiring harness is plugged into the packing assembly. The test equipment completes various tests of the packing and uploads the bound test data. The main test items: capacity test, grounding impedance, total positive and negative insulation to ground, total positive and negative withstand voltage to ground, total positive and negative withstand voltage to communication port, single cell pressure difference detection, serial number writing, SOC calibration, etc.

[0046] In a specific embodiment, as shown in FIG1 , the square cell production line includes the following steps in its working process: first, the cell segment is processed, the cell is put online using the cell transfer device 11, and a code scanning OCA test is performed, and then one side of the cell is plasma cleaned by the cell gluing device 12. After cleaning, the cell is flipped over and the other side of the cell is plasma cleaned. After cleaning, one side of the cell is glued and tested, and after flipping over, the other side of the cell is glued and tested. At the same time, the partition feeding device 13 processes the air duct partition for feeding, plasma cleans one side of it, flips the air duct partition after cleaning, and plasma cleans the other side of the air duct partition. The air duct partition is pasted on the cell, and the cell with the air duct partition pasted is scanned, thereby completing the processing of the cell segment using the cell segment processing system 1. After completing the processing of the cell segment, the module segment processing system 2 begins processing the module segment. The cell module stacking device 21 is used to stack the cells with partitions installed to form cell modules. After stacking, the cell module bundling and extrusion device 22 reshapes the stacked cell modules and uses a laser to laser engrave the stacked cells. The cell modules are laser cleaned for pole addressing and the CCS components are installed. The busbar welding device 23 is then used to perform busbar welding on the cell modules. After welding is completed, post-weld inspection, manual inspection, and module end-of-life testing are performed. Finally, the cell module is transferred to the pack section processing system 3 using the cell module clamping device 24. After the module segment is processed, the box is first transferred to the production line via the box loading station 31. The box loading station 31 cleans the box and transfers it to the production line. The cell module loading station 32 is used to import the cell module into the box. The accessory installation station 33 is used to install the cell module accessories, such as the fan cover, front panel, and fastening copper busbars to the cell module. The torque is reviewed and the insulating cover is installed. After installation, the packed cell module undergoes end-of-line testing. After testing, qualified cell modules are removed from the production line.

[0047] As shown in Figures 2 to 6, the battery cell transfer device 11 provided in the present application is arranged on one side of the battery cell loading area, the battery cell processing area and the tray placement area. The battery cell loading area is provided with a tray 1120 and a square battery cell 1110 arranged in the tray 1120.

[0048] In this embodiment, the battery cell transport device 11 includes: a robotic arm 1130 , a battery cell variable-distance grabbing mechanism 1140 and a battery cell de-strap mechanism 1150 . The battery cell variable-distance gripping mechanism 1140 includes a base 11401, a variable-distance component 11402 and a clamping component 11403. The base 11401 is installed on the robotic arm 1130. The variable-distance component 11402 is installed on the base 11401 and changes distance along the extension direction of the base 11401. The clamping component 11403 is installed on the variable-distance component 11402. The clamping component 11403 is used to clamp the square battery cell 1110 on the tray 1120. The disc-detaching mechanism 1150 is connected to the base 11401. The disc-detaching mechanism 1150 is used to squeeze the tray 1120 to separate the square battery cell 1110 from the tray 1120 when the clamping component 11403 clamps the square battery cell 1110.

[0049] Specifically, the variable pitch assembly 11402 can slide in the extension direction of the base 11401. Since the clamping assembly 11403 is installed on the variable pitch assembly 11402, the position of the clamping assembly 11403 can be further adjusted during the sliding process of the variable pitch assembly 11402, so that the clamping assembly 11403 can grab the square battery cell 1110 in the tray 1120. Since the square battery cell 1110 is arranged in the tray 1120, in order to avoid the tray 1120 from moving when the square battery cell 1110 is grabbed, the tray removal mechanism 1150 is connected to the base 11401. When the clamping assembly 11403 grabs the square battery cell 1110, the tray removal mechanism 1150 squeezes the tray 1120 to separate the square battery cell 1110 from the tray 1120. After the operator uses a manual forklift to transport the full stack of battery cells to the battery cell loading area, the battery cell transfer device detects the position of the square battery cells 1110 in the tray 1120, and the battery cell transfer device first controls the position of the variable distance component 11402, the clamping component 11403 and the tray-off mechanism 1150 through the robotic arm 1130, so that the variable distance component 11402, the clamping component 11403 and the tray-off mechanism 1150 are located above the square battery cells 1110, and then controls the variable distance component 11402 to slide in the extension direction of the base 11401, so that the clamping component 11403 on the variable distance component 11402 is aligned with the battery cells, and the clamping component 11403 can grab one or more columns of square battery cells 1110 at a time, and transfer the square battery cells 1110 to the battery cell processing area. The clamping component 11403 takes the remaining battery cells in turn. When the last column of square battery cells 1110 is taken, it is easy to lift the material tray 1120 when taking the square battery cells 1110. At this time, the tray-detaching mechanism 1150 is needed to assist the clamping component 11403. The tray-detaching mechanism 1150 squeezes the material tray 1120 to separate the square battery cells 1110 from the material tray 1120.

[0050] In one example, as shown in Figures 2 to 6, the battery cell transfer device also includes: a tray grabbing mechanism 1160, which is installed on the base 11401. The tray grabbing mechanism 1160 is used to clamp the tray 1120 and transfer the tray 1120 in the battery cell loading area to the tray placement area.

[0051] Specifically, the tray grasping mechanism 1160 includes: a tray clamp 11601 and a third drive component 11602. The third drive component 11602 can adopt a drive cylinder or a drive motor. The third drive component 11602 is connected to the base 11401. The tray clamp 11601 is movably connected to the base 11401 in a direction perpendicular to the base 11401 through the third drive component 11602.

[0052] After the transfer of the square cells 1110 on a tray 1120 is complete, the cell transfer device detects the position of the tray 1120. The device first adjusts the position of the tray clamp 11601 using the robotic arm 1130, aligning the tray clamp 11601 with the tray 1120. Then, the third drive assembly 11602 drives the tray clamp 11601 downward, grabbing the tray 1120 with the tray clamp 11601, and transferring the tray 1120 from the cell loading area to the tray placement area. In one embodiment, as shown in Figures 2 to 6, the variable pitch assembly 11402 includes a fixed block 114021, a slider 114022, and a first drive assembly 114023. Fixed block 114021 is fixedly connected to one end of base 11401, slider 114022 is slidably mounted on base 11401, and first drive assembly 114023 is mounted on base 11401. The output end of first drive assembly 114023 is connected to slider 114022 to allow slider 114022 to slide along the extension direction of base 11401. Battery cell clamping claws 114024 are provided on both fixed block 114021 and slider 114022. The first driving component 114023 can adopt a cylinder or a motor. Since both the fixed block 114021 and the slider 114022 are provided with battery cell clamps 114024, when it is necessary to adjust the spacing of the battery cell clamps 114024, the slider 114022 can be controlled by the first driving component 114023 to slide on the base 11401, so that the battery cell clamps 114024 on the fixed block 114021 and the slider 114022 are aligned with a row of square battery cells 1110 on the material tray 1120, so that multiple square battery cells 1110 can be transported at the same time. To limit the movement of slider 114022, the pitch-changing assembly further includes a limit rod 114025, which is disposed between slider 114022 and fixed block 114021. Limiting members 114026 are provided at both ends of limit rod 114025 for limiting the position of slider 114022 and fixed block 114021 when in contact. Both slider 114022 and fixed block 114021 are provided with through-holes for the limit rod 114025 to pass through. In this embodiment, when the first driving component 114023 drives the slider 114022 to slide on the base 11401, when the slider 114022 moves in a direction away from the fixed block 114021, the slider 114022 drives the limiting rod 114025 to move in a direction away from the fixed block 114021 through the limiting piece 114026 at one end of the limiting rod 114025. When the slider 114022 moves to a certain distance, the limiting piece 114026 at the other end of the limiting rod 114025 abuts against the fixed block 114021, and the slider 114022 stops sliding. At this time, the slider 114022 slides to the maximum distance relative to the fixed block 114021.When the slider 114022 moves toward the fixed block 114021, the limiting pull rod 114025 and the limiting members 114026 at its ends do not limit the slider 114022 until the slider 114022 abuts the fixed block 114021. At this time, the slider 114022 slides to the minimum distance relative to the fixed block 114021. The distance between the slider 114022 and the fixed block 114021 can be adjusted as needed to meet different spacing requirements for the battery cell clamping jaws 114024. Based on the above embodiment, in one embodiment, as shown in Figures 2 to 6, to improve the efficiency of transportation, a plurality of limiting pull rods 114025 and sliders 114022 are provided, each slider 114022 is provided with a battery cell clamping claw 114024, a fixed block 114021 and a plurality of sliders 114022 are provided in sequence, the fixed block 114021 is fixedly connected to the base 11401, and the plurality of sliders 114022 are slidably provided on the base 11401 in sequence, and limiting pull rods 114025 are provided between adjacent sliders 114022 and between the sliders 114022 and the fixed block 114021. One or more limiting pull rods 114025 and sliders 114022 can be provided as needed to meet the requirements of transporting multiple square battery cells 1110 at the same time. In a specific embodiment, there are four sliders 114022, namely the first slider 114027, the second slider 114028, the third slider 114029 and the fourth slider 114030, the fixed block 114021, the first slider 114027, the second slider 114028, the third slider 114029 and the fourth slider 114030 are arranged in sequence, and there are four limiting rods 114025, namely the first limiting rod, the second limiting rod, the third limiting rod and the fourth limiting rod, a first limiting rod is provided between the fixed block 114021 and the first slider 114027, a second limiting rod is provided between the first slider 114027 and the second slider 114028, a third limiting rod is provided between the second slider 114028 and the third slider 114029, and a fourth limiting rod is provided between the third slider 114029 and the fourth slider 114030. The fourth slider 114030 is connected to the driving end of the first driving component 114023 , and the first driving component 114023 is set on the fixed block 114021 .When the first drive component 114023 drives the fourth slider 114030 to move away from the fixed block 114021, with the first drive component 114023 as the power, after the fourth slider 114030 reaches the specified position, the fourth limit rod pulls the third slider 114029 to slide, after the third slider 114029 reaches the specified position, the third limit rod pulls the second slider 114028 to slide, after the second slider 114028 reaches the specified position, the second limit rod pulls the first slider 114027 to slide, after the first slider 114027 reaches the specified position, until it reaches the final required position, the first limit rod limits the first slider 114027 to complete the equal distance change position of each slider. At this time, the cell clamps 114024 on the fixed block 114021, the first slider 114027, the second slider 114028, the third slider 114029 and the fourth slider 114030 can be used to clamp a row of square cells 1110 and transport the square cells 1110 to the cell processing area. When the first driving component 114023 drives the fourth slider 114030 to move in the direction close to the fixed block 114021, with the first driving component 114023 as the power, after the fourth slider 114030 moves back to a certain position, the third slider 114029 blocks and limits the position, and the fourth slider 114030 pushes the third slider 114029 to move. After the third slider 114029 moves back to a certain position, the second slider 114028 blocks and limits the position, and the third slider 114029 pushes the second slider 114030 to move. 14028 moves. After the second slider 114028 moves back to a certain position, the first slider 114027 blocks the limit, and the second slider 114028 pushes the first slider 114027 to move. After the first slider 114027 moves back to a certain position, it contacts the fixed block 114021. Under the limit of the fixed block 114021, the first slider 114027, the second slider 114028, the third slider 114029 and the fourth slider 114030 stop moving, completing the equal variable distance position of each slider. Similarly, at this time, the battery cell clamps 114024 on the fixed block 114021, the first slider 114027, the second slider 114028, the third slider 114029 and the fourth slider 114030 can be used to clamp a row of square battery cells 1110 and transport the square battery cells 1110 to the battery cell processing area.

[0053] In one embodiment, as shown in FIG2 to FIG6 , the battery cell transport device further includes a visual inspection mechanism 1170 . The visual inspection mechanism 1170 is connected to the base 11401 and is used to detect the position of the square battery cells 1110 on the tray 1120 . The visual inspection mechanism 1170 detects the position of the square battery cells 1110 in the tray 1120, and the battery cell transfer device first controls the position of the variable distance component 11402, the clamping component 11403 and the de-disc mechanism 1150 through the robotic arm 1130, so that the variable distance component 11402, the clamping component 11403 and the de-disc mechanism 1150 are located above the square battery cells 1110, and then controls the variable distance component 11402 to slide in the extension direction of the base 11401, so that the clamping component 11403 on the variable distance component 11402 is aligned with the battery cells. The clamping component 11403 can grab one or more columns of square battery cells 1110 at a time and transfer the square battery cells 1110 to the battery cell processing area. The clamping component 11403 takes the remaining battery cells in turn. When the last column of square battery cells 1110 is taken, it is easy to lift the material tray 1120 when taking the square battery cells 1110. At this time, the tray-detaching mechanism 1150 is needed to assist the clamping component 11403. The tray-detaching mechanism 1150 squeezes the material tray 1120 to separate the square battery cells 1110 from the material tray 1120.

[0054] The disc-off mechanism 1150 includes: a disc-off assembly 11501 and a second drive assembly 11502. The second drive assembly 11502 is connected to the base 11401. The disc-off assembly 11501 is movably connected to the base 11401 in a direction perpendicular to the base 11401 through the second drive assembly 11502. When the disc-off assembly 11501 moves downward, a part of the disc-off assembly 11501 extends to one side of the clamping assembly 11403.

[0055] Second drive assembly 11502 can be a pneumatic cylinder or a motor. An elastic stopper is provided at the end of de-tray assembly 11501. As de-tray assembly 11501 moves downward, the elastic stopper extends to one side of gripping assembly 11403. Specifically, when the last row of square cells 1110 is retrieved, second drive assembly 11502 controls de-tray assembly 11501 to move downward. When the elastic stopper on de-tray assembly 11501 contacts tray 1120, it squeezes tray 1120, separating the square cells 1110 from tray 1120.

[0056] In one embodiment, as shown in Figure 7, the battery cell gluing device 12 includes: a drive motor 1214, a feed roll 1211, a take-up roll 1212 and a roller assembly 1213; the feed roll 1211 is used to supply a material strip including release paper and a segmented adhesive film, one end of the material strip is wound around the feed roll 1211, and the other end of the material strip is wound around the take-up roll 1212 through the roller assembly 1213, and the drive motor 1214 is transmission-connected to the take-up roll 1212 and the roller assembly 1213. Drive motor 1214 is in transmission connection with take-up reel 1212, with the other end of the strip wound around take-up reel 1212. As drive motor 1214 rotates, it drives take-up reel 1212 to rotate clockwise, which in turn drives the strip, allowing the strip to be continuously wound and wound around take-up reel 1212. Driven by the strip, unwinding reel 1211 rotates with it, feeding the strip to take-up reel 1212 via roller assembly 1213. Take-up reel 1212 completes the process of rewinding the strip after gluing. Roller assembly 1213 is provided between unwinding reel 1211 and take-up reel 1212 to restrict the strip's path and direction, allowing the strip to closely adhere to the gluing location of the battery cell during movement, allowing the adhesive film on the strip to adhere to the battery cell, completing the gluing process.

[0057] In one embodiment, as shown in Figure 8, the partition loading device 13 includes a partition online device 1313, a conveyor line 1312, and a partition online device 1313, a partition cleaning device 1314, and a partition installation device 1315 arranged in sequence along the transportation direction of the conveyor line 1312; the partition online device 1313 is arranged on the loading end side of the conveyor line 1312; the partition online device 1313 is arranged at the loading end of the conveyor line 1312, and is used to transfer the air duct partitions on the partition online device 1313 to the conveyor line 1312; the conveyor line 1312 is used to transport the air duct partitions; the partition cleaning device 1314 includes two partition cleaning mechanisms 13141 and a partition flipping mechanism 13142; the partition flipping mechanism 13142 is arranged between the two partition cleaning mechanisms 13141; the partition installation device 1315 is arranged at the unloading end of the conveyor line 1312, and is used to install the air duct partitions on the square battery cells.

[0058] Specifically, as shown in Figure 8, the partition online device 1313 includes a feeding cart 13111 and a cart guiding and positioning mechanism 13112. The feeding cart 13111 is provided with a duct partition storage part 13113. The cart guiding and positioning mechanism 13112 is arranged on the loading end side of the conveyor line 1312. The cart guiding and positioning mechanism 13112 is arranged corresponding to the feeding cart 13111. The feeding trolley 13111 is used to transport the air duct baffles from the storage location to the loading end of the conveyor line 1312. By providing an air duct baffle storage unit 13113 on the feeding trolley 13111 to store a certain number of air duct baffles, the number of round trips of the feeding trolley 13111 is reduced, thereby improving feeding efficiency. By providing a trolley guide and positioning mechanism 13112, the feeding trolley 13111 is guided and positioned, so that the feeding trolley 13111 can transport the air duct baffles to a fixed position on the loading end of the conveyor line 1312, so that the baffle online device 1313 can position and transport the air duct baffles, thereby improving transportation efficiency and reliability. As shown in Figure 8, the baffle online device includes a first drive mechanism 13131 and a material picking mechanism 13132. The material picking mechanism 13132 is provided on the first drive mechanism 13131, and the first drive mechanism 13131 is used to drive the material picking mechanism 13132 to move to adjust the position. The first driving mechanism 13131 can adjust its position by driving the picking mechanism 13132 so as to align with the air duct partition on the partition loading device 13, so as to grab or suck the air duct partition and transfer it to the conveyor line 1312. As shown in Figure 8, the first driving mechanism 13131 includes a first Z-axis driving member, a first X-axis driving member, and two first Y-axis driving members, wherein the Z-axis is along the vertical direction, the X-axis is along the conveying direction of the conveyor line 1312, and the Y-axis is perpendicular to the Z-axis and the X-axis; the first Z-axis driving member is connected to the picking mechanism 13132 and is used to drive the picking mechanism 13132 to move along the Z-axis direction; the first X-axis driving member is connected to the first Z-axis driving member and is used to drive the picking mechanism 13132 and the first Z-axis driving member to move along the X-axis direction; the two first Y-axis driving members are arranged side by side along the X-axis direction and connected to the two ends of the bottom of the first X-axis driving member to drive the picking mechanism 13132, the first Z-axis driving member, and the first X-axis driving member to move along the Y-axis direction. The first Z-axis drive, the first X-axis drive, and the first Y-axis drive respectively drive the picking mechanism 13132 to move along the Z-axis, X-axis, and Y-axis directions to adjust the position of the picking mechanism 13132. The partition line device 1313 includes multiple picking mechanisms 13132, each of which is arranged corresponding to the air duct partitions on the partition line device. Each picking mechanism 13132 is equipped with a picking suction cup, which is used to pick up the air duct partitions on the partition line device and transfer them to the conveyor line 1312. By providing multiple picking mechanisms 13132, each of which is equipped with a picking suction cup, multiple air duct partitions can be picked up at once and transferred to the conveyor line 1312, effectively improving transfer efficiency and facilitating a reduction in production cycle time.

[0059] Based on the above embodiments, in one embodiment, as shown in Figures 9 to 13, the battery cell module stacking device 21 includes: a mounting plate 211, a positioning assembly 212 and a battery cell clamp 213; the mounting plate 211 has a bearing surface, and the mounting plate 211 has a stacking end and a loading end that are relatively arranged along a first direction of the bearing surface; the positioning assembly 212 includes a positioning plate 2121 provided at the stacking end, and the side wall surface of the positioning plate 2121 facing the loading end forms a stacking surface, and the stacking surface and the bearing surface are used to jointly support the battery cell A; the battery cell clamp 213 is movably provided on the bearing surface along the first direction, and the battery cell clamp 213 has a movable stroke that reciprocates between the loading end and the stacking end; wherein the battery cell clamp 213 is used to receive the battery cell A at the loading end and clamp the battery cell A to move toward the stacking end, so as to stack the battery cell A on the stacking surface along the first direction.

[0060] Furthermore, as shown in Figures 9 to 13, a pad 2111 is protruding from the support surface. The pad 2111 extends along the first direction, with one end extending to the stacking end. The end surface of the pad 2111 facing away from the support surface is used to support the battery cell A. An escape space is formed between the side wall surface of the pad 2111 and the support surface. In this embodiment, the pad 2111 supports the battery cell A, so that a gap is formed between the battery cell A and the support surface, so that the battery cell clamp 213 can move the battery cell A, or when the battery cell module is subsequently removed by the unloading device, the clamping claw and other components can extend between the battery cell A and the support surface to grasp the battery cell A. It should be noted that the battery cell A is carried on the end face of the pad 2111 facing away from the bearing surface, and an avoidance space is formed between the side wall surface of the pad and the bearing surface. In the present application, the first direction is the length direction of the pad 2111, and the direction perpendicular to the bearing surface is the thickness direction of the pad 2111. Avoidance spaces are formed on both sides of the width direction of the pad 2111, and the width of the pad 2111 is smaller than the width of the battery cell.

[0061] In one embodiment provided in the present application, the battery cell clamp 213 includes a claw assembly, which is used to jointly support the battery cell A, wherein the claw assembly includes a first supporting portion and a second supporting portion, the first supporting portion extends along the first direction, and the second supporting portion is arranged perpendicular to the supporting surface to form an L-shaped structure. In this embodiment, since the battery cell A is placed between the first supporting portion and the second supporting portion, the battery cell A cannot be directly attached to the supporting surface. At this time, the battery cell A can be attached to the pad 2111 through the pad 2111, and the first supporting portion can move along the avoidance space to facilitate cooperation with the battery cell clamp 213; at the same time, when the battery cell module is subsequently removed, the external clamping claws can be extended into the avoidance space to clamp the battery cell.

[0062] In the embodiment provided in the present application, the battery module stacking device 21 includes a lifting member 214, which is movably mounted on the bearing surface in a direction perpendicular to the bearing surface and is located between the stacking end and the loading end. The end surface of the lifting member 214 facing away from the bearing surface is used to lift the upper end plate. After the battery cells are stacked, the upper end plate needs to be placed at the end of the battery cell stack. When the cross-sectional size of the upper end plate is smaller than the cross-sectional size of the battery cell A, the upper end plate cannot be located at the center of the battery cell A. In this embodiment, the upper end plate is lifted up in the direction away from the bearing surface by the lifting member 214, so that the upper end plate remains at the center of the battery cell A, thereby avoiding a position difference between the center positions of the upper end plate and the bearing surface due to the upper end plate being closely attached to the bearing surface.

[0063] Specifically, in the present embodiment, a mounting groove is concavely provided on the bearing surface, and the lifting member 214 is telescopically arranged in the mounting groove. The lifting member 214 is installed through the mounting groove. When the lifting member 214 does not need to adjust the position of the upper end plate, it can be directly retracted into the mounting groove without affecting the normal placement of the upper end plate. When lifting is required, after the battery cells are stacked to a specified height, that is, after the lifting member 214 is located, the lifting member 214 is ejected to support the upper end plate and eject the upper end plate to the same center position of the battery cell A. It should be noted that, in the present embodiment, the lifting member 214 is a lifting block to facilitate lifting the upper end plate. In addition, in the present embodiment, a lifting member is also provided at the feeding end to facilitate adjusting the position of the upper end plate on the battery cell fixture 213 when the battery cell fixture 213 at the feeding end obtains the battery cell. There are many ways for the lifting member 214 to be telescopic and movable, such as through a cylinder or a motor, etc. As long as the lifting member 214 can be reciprocated in the direction perpendicular to the bearing surface, there is no specific limitation in this application. It should be noted that a plurality of support blocks 2122 can be provided, and a plurality of support blocks 2122 are used together to support the lower end plate. In addition, there are many implementation methods for the material of the support block 2122, such as through industrial rubber, etc., which are not specifically limited here. On the other hand, the positioning assembly 212 also includes two positioning jaws 2123 spaced apart along the second direction of the bearing surface, and the two positioning jaws 2123 are respectively provided on both sides of the positioning plate 2121. The two positioning jaws 2123 have a movable stroke of approaching or moving away from each other, and the two positioning jaws 2123 are used to clamp the battery cell; wherein the first direction and the second direction are arranged perpendicular to each other. In this embodiment, after the lower end plate and the battery cell A are placed on the positioning plate 2121, the two positioning clamps 2123 are used to clamp the battery cell or the lower end plate on the positioning plate 2121, and then the position of the lower end plate or the battery cell is aligned and adjusted to ensure the stacking foundation of the battery cell and avoid the inability to stack correctly due to the bottom position deviation during the subsequent stacking of the battery cells. At the same time, the position of the lower end plate is fixed by the positioning clamps 2123 to avoid shaking during the stacking process and the movement of the entire mounting plate. It should be noted that the two positioning clamps 2123 are both installed on the mounting plate 211 to save space. In this embodiment, the two positioning clamps 2123 are respectively on both sides of the positioning plate 2121, and the positioning assembly 212 also includes a driving device, which drives the two positioning clamps 2123 to move. In addition, in order to prevent the driving device from affecting the stacking of the positioning plate 2121, the driving device is on the side of the positioning plate 2121 facing away from the upper material end.On the other hand, the battery cell clamp 213 also includes a clamp bracket 2131, a claw assembly and a centering assembly; the clamp bracket 2131 is movably arranged on the bearing surface along the first direction; the claw assembly is installed on the clamp bracket, and a battery cell storage space is formed on the claw assembly, and the battery cell storage space is used to support the battery cell; the centering assembly is installed on the clamp bracket, and the centering assembly can be close to or away from the claw assembly, and a battery cell clamping space is formed on the centering assembly, and the battery cell clamping space is used to clamp the side wall of the battery cell. In this embodiment, the claw assembly is provided with a battery cell storage space, and the incoming material device only needs to place the battery cell in the battery cell storage space, without the need for precise positioning, thereby improving the loading efficiency; by providing the centering assembly, the centering assembly is provided with a battery cell clamping space, and the battery cell clamping space can clamp the battery cell from the battery cell storage space and move it in the center to prevent the battery cell from skewing during the stacking process, thereby improving the battery cell loading efficiency and avoiding the battery cell skewing during the stacking process.

[0064] In the embodiment provided in the present application, the cell clamp 213 is arranged on the supporting surface and is movable along the first direction to transport the cells between the loading end and the stacking end. The cell clamp 213 can be moved in various ways, for example, by directly driving the cell clamp 213 to move back and forth through a driving member. In this embodiment, a sliding fit structure is formed between the clamp bracket 2131 and the supporting surface. The sliding fit structure includes a slide rail 2112 and a slide groove. The slide rail is slidably arranged in the slide groove. Both the slide rail 2112 and the slide groove extend along the first direction. One of the slide rail 2112 and the slide groove is arranged on the clamp bracket 2131, and the other is arranged on the supporting surface. The claw assembly includes a pair of battery cell supporting claws 21321 and a first driving member 21322. The first driving member 21322 is connected to the clamp bracket 2131. The first driving member 21322 is used to drive the two battery cell supporting claws 21321 toward or away from each other, switching the distance between the two battery cell supporting claws 21321 between less than a first length and greater than the first length. The first length is the length of the battery cell A. When the distance between the two battery cell supporting claws 21321 is less than the first length, the battery cell A can be placed on the two battery cell supporting claws 21321. When the distance between the two battery cell supporting claws 21321 is greater than the first length, the two battery cell supporting claws 21321 can avoid stacked battery cell modules, facilitating centering and placement of the assembly. Furthermore, the battery cell supporting claws 21321 include a first supporting portion and a second supporting portion, which are vertically connected to form an L-shaped structure. The bottom and side walls of the battery cell A respectively contact the L-shaped structure. The first and second supporting portions together define a cell storage space. Furthermore, the sidewalls of the cell support claws 21321 that contact the cell A are provided with roller structures, with the rolling axis of the rollers perpendicular to the direction of movement of the cell support claws. This reduces friction between the cell support claws and the bottom of the cells when the two cell support claws are separated and opened when the cells are stacked, thereby preventing scratches on the cell housings.

[0065] Furthermore, the centering assembly includes: a centering jaw 21331 and a drive assembly 21332, wherein the drive assembly 21332 is connected to the clamp bracket; the centering jaw 21331 includes: a first centering portion and a second centering portion; the drive assembly 21332 is connected to the first centering portion and the second centering portion, and is used to drive the first centering portion and the second centering portion toward or away from each other, forming a battery cell clamping space between the first centering portion and the second centering portion. The drive assembly 21332 may include multiple drive devices, each of which drives the centering jaw 21331 to perform different actions, such as opening and closing the centering jaw 21331, moving the centering jaw 21331 as a whole, etc. The drive assembly 21332 may be a device known in the art, such as a cylinder or an electric telescopic rod. Specifically, the first pair of centering portions and the second pair of centering portions are arranged relative to each other to form a clamping structure. When the first pair of centering portions and the second pair of centering portions are close together, the side walls of the battery cell are clamped. When the first pair of centering portions and the second pair of centering portions are separated, the side walls of the battery cell are loosened. The drive assembly 21332 can perform centering adjustments according to a predetermined program as the first pair of centering portions and the second pair of centering portions approach each other, so that the clamped battery cell A and the stacked battery cells A are aligned. Furthermore, the battery cell clamp 213 also includes a downward pressing assembly; the downward pressing assembly includes an extrusion member 21341 and a second drive member 21342. The second drive member 21342 is mounted on the clamp bracket and is configured to drive the extrusion member 21341 to move in a first direction. After the centering jaws open to place the battery cell in the stacking position, the second drive member 21342 drives the extrusion member downward, which compresses the battery cell to reduce the distance between the stacked cells, thereby completing the stacking of the battery cells.

[0066] On the other hand, a plurality of mounting plates 211 are provided, and the plurality of mounting plates 211 are spaced apart along the second direction of the bearing surface, and the plurality of mounting plates 211 together form a stacking group; wherein the first direction and the second direction are arranged perpendicular to each other. In this embodiment, a plurality of mounting plates 211 are arranged simultaneously in the same plane to facilitate the stacking of a plurality of battery modules at the same time, and the loading device can simultaneously load battery stacks on the plurality of mounting plates 211, thereby improving production efficiency. In the embodiment provided in the present application, the battery module stacking device 21 also includes a frame 2151 and a turntable bracket 2152; a loading station and an unloading station are formed on the side of the frame 2151; the turntable bracket 2152 is arranged on the frame 2151 to rotate along the vertical axis, and the mounting plate 211 is arranged on the turntable bracket 2152, and the turntable bracket 2152 rotates so that the bearing surface passes through the loading station and the unloading station. In this embodiment, the turntable bracket 2152 allows the mounting plate 211 to pass through the loading station and the unloading station. During operation, the mounting plate 211 receives the battery cells A at the loading station for stacking. After the stacking is completed, it is rotated to the unloading station for unloading, avoiding the loading and unloading stations being on one side, resulting in limited activity space.

[0067] Furthermore, a plurality of mounting plates 211 are provided, and the plurality of mounting plates 211 are spaced apart along the circumference of the turntable bracket. In this embodiment, a plurality of mounting plates 211 are provided to facilitate simultaneous loading, stacking, and unloading. While one mounting plate 211 is loading and stacking, another mounting plate is at the unloading station, continuing the unloading process. After loading, stacking, and unloading are completed, a different mounting plate is switched by rotation, and the stacked battery modules can be unloaded and stacked on the positioning plate 2121 where unloading has been completed, thereby improving the stacking efficiency of the battery module stacking device.

[0068] In the embodiment provided in the present application, the loading station and the unloading station are respectively arranged on opposite sides of the frame, and two mounting plates 211 are provided on the turntable bracket 2152. The two mounting plates 211 are respectively arranged on opposite sides of the turntable bracket 2152. Through the rotation of the turntable bracket 2152, the two mounting plates 211 are respectively located at the loading station and the unloading station. Similarly, the mounting plate 211 is tilted downward from the loading end to the stacking end. In this embodiment, the mounting plate 211 is tilted, so that the battery cell A can naturally lean on the positioning plate 2121 and the bearing surface during the stacking process, ensuring that the battery cells A are pressed against each other and stacked, and avoiding the problem of insufficient stacking when the battery cells are set completely horizontally or completely vertically.

[0069] Based on the above embodiment, in one example, as shown in Figures 14 to 17, the cell module bundling and extrusion device 22 includes: a platform 221, a transfer mechanism 222, and a shaping mechanism 223. The platform 221 has a bundling position and a transfer position. The transfer mechanism 222 is used to switch between the bundling position and the transfer position. The shaping mechanism 223 is located at the transfer position and is used to shape the cell module 224 on the transfer mechanism 222 along the width direction of the cell module 224. The transfer mechanism 222 is provided with an extrusion assembly 2221, which is used to extrude the cell module 224 on the transfer mechanism 222 along the length direction of the cell module 224.

[0070] Specifically, the cell module extrusion and bundling device shown in this embodiment improves the overall efficiency of cell module bundling by shaping and extruding the cell module 224 at two workstations respectively; when the cell module 224 needs to be bundled, the transfer mechanism 222 moves to the transfer position to prepare for receiving, and the loading robot transfers the cell module 224 to be bundled onto the transfer mechanism 222, and the shaping mechanism 223 is opened to shape the side of the cell module 224 so that the side of the cell module 224 can be kept flat. After the shaping is completed, the transfer mechanism 222 drives the cell module 224 to move to the bundling position, and the extrusion component 2221 squeezes the cell module 224 from the length direction of the cell module 224 to appropriately reduce the length of the cell module 224, thereby making it easier for the operator to put the steel strip on the cell module 224 along the height direction of the cell module 224, thereby completing the cell module 22 4, the transfer mechanism 222 drives the battery cell module 224 after bundling to move to the transfer position, and the unloading robot performs unloading, that is, the entire bundling process is completed by two stations, the battery cell module 224 is shaped at the transfer position, and the battery cell module 224 is extruded and covered with steel strips at the bundling position. On the one hand, by setting up two stations, the battery cell module can be bundled in an orderly manner, thereby ensuring production efficiency. On the other hand, covering the steel strips at the bundling position can avoid the obstruction caused by the shaping mechanism 223, thereby ensuring operation space.

[0071] In some embodiments, the cell module extrusion and bundling device shown in this embodiment further includes: a pressing mechanism 225; the pressing mechanism 225 is disposed at the bundling position and is used to press down the cell module 224 on the transfer mechanism 222 along the height direction of the cell module 224. Specifically, after the transfer mechanism 222 moves the shaped cell module 224 to the bundling position, the pressing mechanism 225 is activated, thereby applying pressure to the cell module 224 along the height direction of the cell module 224, that is, pressurizing the upper surface of the cell module 224, effectively preventing the cell module 224 from being deformed when the extrusion assembly 2221 is extruding the cell module 224. In the actual process of putting on the steel strips, the battery cell module 224 usually needs to be put on two steel strips, one steel strip is located on the upper half of the battery cell module 224, and the other steel strip is located on the lower half of the battery cell module 224. The operator puts one steel strip on the lower half of the battery cell module 224 from bottom to top, and then the downward pressure mechanism 225 retracts to facilitate the operator to put the other steel strip on the upper half of the battery cell module 224 from top to bottom. As shown in Figure 15, the pressing mechanism 225 shown in this embodiment includes a mounting frame 2251, a first driving member 2252 and a pressing head 2253; the pressing head 2253 is connected to the mounting frame 2251 through the first driving member 2252, and the first driving member 2252 is used to drive the pressing head 2253 to move along the height direction of the battery module 224. The first driving member 2252 drives the pressing head 2253 to move toward the battery module 224 until the pressing head 2253 contacts the battery module 224 and applies a certain pressure to the battery module 224.

[0072] As shown in FIG15 , the pressing mechanism 225 of this embodiment further includes a guide structure 2254, which includes a guide rod and a guide cylinder. Both the guide rod and the guide cylinder are arranged along the height direction of the battery cell module 224. The guide rod is movably disposed within the guide cylinder, which is connected to the mounting frame 2251, and the guide rod is connected to the pressing head 2253. As shown in FIG16 , the transfer mechanism 222 of this embodiment is provided with a prefabricated steel strip groove 2222 for accommodating the steel strip. Before the steel strip is applied, the steel strip in the prefabricated steel strip groove 2222 is located directly below the battery cell module 224. After the extrusion assembly 2221 compresses the battery cell module 224, the operator lifts the steel strip, thereby applying the steel strip to the lower half of the battery cell module 224 from the bottom up. As shown in Figure 17, the shaping mechanism 223 shown in this embodiment includes a first shaping component 2231 and a second shaping component; the first shaping component 2231 and the second shaping component are arranged opposite to each other along the width direction of the battery cell module 224; the first shaping component 2231 and the second shaping component have the same structure, both including a shaping plate 22311 and a second driving member 22312; the second driving member 22312 is used to drive the shaping plate 22311 to move toward the side close to the battery cell module 224 or away from the side of the battery cell module 224.

[0073] In some embodiments, as shown in FIG17 , the first shaping assembly 2231 shown in this embodiment further includes a guide rail 22313; the guide rail 22313 extends along the width direction of the battery cell module 224, and the shaping plate 22311 is movably disposed on the guide rail 22313. Specifically, under the guiding action of the guide rail 22313, the stability of the movement of the shaping plate 22311 is ensured, thereby ensuring the shaping quality of the side of the battery cell module 224. The first shaping assembly 2231 also includes a limiting structure 22314; the limiting structure 22314 is detachably connected to the shaping plate 22311. Specifically, the limiting action of the limiting structure 22314 can prevent the shaping plate 22311 from excessively squeezing the battery cell module 224. In this embodiment, the platform 221 is provided with a slide 2211, and the transfer mechanism 222 is provided on the slide 2211. The slide 2211 drives the transfer mechanism 222 to switch between the bundling position and the transfer position. In some embodiments, as shown in FIG16 , the extrusion assembly 2221 shown in this embodiment includes a first extrusion head 22211, a second extrusion head 22212, and a third drive member 22213. The first extrusion head 22211 and the second extrusion head 22212 are arranged opposite each other along the length of the battery cell module 224, and the third drive member 22213 is used to drive the first extrusion head 22211 and the second extrusion head 22212 to move closer to or away from each other. Specifically, the third driving member 22213 drives the first extrusion head 22211 and the second extrusion head 22212 to approach each other, thereby extruding the battery cell module 224 along the length direction of the battery cell module 224 to appropriately reduce the length dimension of the battery cell module 224, so as to facilitate the operator to put the steel belt on the battery cell module 224. In some embodiments, a pressure sensor 226 is provided on the second extrusion head 22212 shown in this embodiment. The pressure sensor 226 is communicatively connected to the third drive member 22213 through the controller. The pressure sensor 226 feeds back the pressure exerted on the battery module 224 to the controller, and the controller controls the third drive member 22213 accordingly to control the pressure within an appropriate range. For example, the pre-pressure, holding pressure and over-pressure can be set in advance according to the size of the pressure. When the pressure reaches the pre-pressure, the third drive member 22213 can be controlled to continue to move, that is, continue to apply pressure. When the pressure reaches the holding pressure, the third drive member 22213 can be controlled to stop. At this time, the steel belt is put on the battery module 224. Under extreme working conditions, if the pressure reaches the over-pressure, the third drive member 22213 is controlled to retract accordingly to prevent deformation and damage of the battery module 224.

[0074] Based on the above embodiments, in some embodiments, as shown in Figures 18 to 21, the battery module clamping device 24 includes: a first side pressure plate 241, a second side pressure plate, a first end plate 2421, a second end plate 2422, a clamping claw 243 and a driving component, the first side pressure plate 241 and the second side pressure plate are spaced apart along the first direction, the first end plate 2421 and the second end plate 2422 are spaced apart along the second direction, wherein the second direction is perpendicular to the first direction; the bottom of the first side pressure plate 241 and the bottom of the second side pressure plate are both provided with There is a clamping claw 243, which extends along the first direction toward the adjacent first side pressure plate 241 or the second side pressure plate; the driving component is used to drive the first side pressure plate 241 and the second side pressure plate to approach or move away from each other along the first direction, and drive the first end plate 2421 and the second end plate 2422 to approach or move away from each other along the second direction; a clamping space is enclosed between the first side pressure plate 241, the second side pressure plate, the first end plate 2421, the second end plate 2422 and the clamping claw 243, and the clamping space is used to clamp the battery cell module 2414.

[0075] The battery cell module clamping device provided in the present application includes two side pressure plates (respectively a first side pressure plate 241 and a second side pressure plate), two end plates (respectively a first end plate 2421 and a second end plate 2422) and a clamping claw 243. The first side pressure plate 241 and the second side pressure plate are arranged at intervals along the first direction, and the first end plate 2421 and the second end plate 2422 are arranged at intervals along the second direction. The first side pressure plate 241, the second side pressure plate, the first end plate 2421 and the second end plate 2422 are arranged to form a rectangular structure, wherein the first direction and the second direction are in the same plane, and the first direction is perpendicular to the second direction; further, a clamping claw 243 is provided at the bottom of the first side pressure plate 241, and the clamping claw 243 extends along the first direction toward the direction of the second side pressure plate. A clamping claw 243 is also provided at the bottom of the second side pressure plate, and the clamping claw 243 extends along the first direction toward the direction of the first side pressure plate. The battery cell module clamping device also includes a driving assembly, which is used to drive the first side pressure plate 241, the second side pressure plate, the first end plate 2421 and the second end plate 2422 to move, and adjust the relative position between the first side pressure plate 241 and the second side pressure plate, and the relative position between the first end plate 2421 and the second end plate 2422. Specifically, the driving assembly is connected to the first side pressure plate 241 and / or the second side pressure plate, and the driving assembly is connected to the first end plate 2421 and / or the second end plate 2422. When the driving assembly is started, it drives the first side pressure plate 241 and the second side pressure plate closer together, reducing the distance between the two side pressure plates, and the distance between the two clamping jaws 243 is also reduced; it drives the first end plate 2421 and the second end plate 2422 closer together, reducing the distance between the first end plate and the second end plate, thereby clamping the battery cell module. The core module 2414 is clamped in the clamping space surrounded by the first side pressure plate 241, the second side pressure plate, the first end plate 2421, the second end plate 2422 and the clamping claw 243, wherein the inner wall surface of the first side pressure plate, the inner wall surface of the second side pressure plate, the inner wall surface of the first end plate and the inner wall surface of the second end plate are respectively fitted with the side wall surfaces of the battery cell module 2414, and the clamping claw 243 is located on the bottom surface of the battery cell module 2414 to support the battery cell module 2414 and prevent the battery cell module 2414 from detaching.

[0076] When the battery module 2414 moves to the target position, the driving component drives the first side pressure plate 241 and the second side pressure plate to move away from each other, increasing the distance between the first side pressure plate 241 and the second side pressure plate, and the distance between the two clamps 243 also increases accordingly; drives the first end plate 2421 and the second end plate 2422 to move away from each other, increasing the distance between the first end plate 2421 and the second end plate 2422, so as to remove the battery module 2414.

[0077] In this embodiment, the lengths of the first end plate 2421 and the second end plate 2422 are both less than or equal to the width of the battery cell module 2414, avoiding interference between the first end plate 2421 and the second end plate 2422 and the first side pressure plate 241 and the second side pressure plate when the first end plate 2421 and the second end plate 2422 are close to each other, thereby ensuring that the first end plate 2421 and the second end plate 2422 clamp the battery cell module 2414.

[0078] In this embodiment, the sum of the lengths of the clamping claws 243 at the bottom of the first side pressure plate and the bottom of the second side pressure plate is less than or equal to the width of the battery cell module 2414, ensuring that the clamping claws 243 on both sides support the battery cell module 2414, so that the first side pressure plate 241 and the second side pressure plate can clamp the battery cell module 2414.

[0079] Based on the above embodiment, the battery module clamping device further includes a mounting plate 244 , and the first side pressure plate 241 , the second side pressure plate, the first end plate 2421 and the second end plate 2422 are all vertically arranged on the bottom surface of the mounting plate 244 .

[0080] The battery module clamping device includes a first side pressure plate 241, a second side pressure plate, a first end plate 2421, a second end plate 2422 and a mounting plate 244. The first side pressure plate 241 and the second side pressure plate are arranged at intervals on the bottom surface of the mounting plate 244 along the first direction of the mounting plate 244, and the first side pressure plate 241 and the second side pressure plate are respectively perpendicular to the mounting plate 244; the first end plate 2421 and the second end plate 2422 are arranged at intervals on the bottom surface of the mounting plate 244 along the second direction of the mounting plate 244, and the first end plate 2421 and the second end plate 2422 are respectively perpendicular to the mounting plate 244.

[0081] The control drive assembly is started, the first side pressure plate 241 and the second side pressure plate are close to each other, and the first end plate 2421 and the second end plate 2422 are close to each other, and then the battery module 2414 is clamped in the clamping space surrounded by the first side pressure plate 241, the second side pressure plate, the first end plate 2421, the second end plate 2422, the clamping claw 243 at the bottom of the first side pressure plate, the clamping claw 243 at the bottom of the second side pressure plate and the mounting plate 244, wherein the inner wall surface of the first side pressure plate 241, the inner wall surface of the second side pressure plate, the inner wall surface of the first end plate 2421 and the inner wall surface of the second end plate 2422 are respectively fitted with the side wall surfaces of the battery module 2414, the clamping claw 243 is located on the bottom surface of the battery module 2414 for supporting the battery module 2414, and the top surface of the battery module 2414 can be fitted with the bottom surface of the mounting plate 244, or it can maintain a certain distance from the bottom surface of the mounting plate 244.

[0082] There may also be two mounting plates 244 in this embodiment, wherein the first side pressure plate 241 and the second side pressure plate are respectively vertically arranged on the bottom surface of the first mounting plate 244 , and the first end plate 2421 and the second end plate 2422 are vertically arranged on the bottom surface of the second mounting plate 244 .

[0083] On the basis of the above embodiments, the battery module clamping device further includes a limiting component, which includes a first fixing member 245 and a limiting member 247. The first fixing member 245 is connected to the bottom surface of the mounting plate 244, and the first fixing member 245 is located on the side of the first side pressure plate 241 away from the second side pressure plate, and / or the first fixing member 245 is located on the side of the second side pressure plate away from the first side pressure plate 241; when the first side pressure plate 241 and the second side pressure plate are close to each other, the limiting member 247 is embedded between the first side pressure plate and the first fixing member 245, and / or the limiting member 247 is embedded between the second side pressure plate and the first fixing member 245. Furthermore, the battery module clamping device also includes a second fixing member 246 and a driving member 248. When the first fixing member 245 is located on the side of the first side pressure plate away from the second side pressure plate, the second fixing member 246 is located on the side of the first side pressure plate 241 away from the second side pressure plate; when the first fixing member 245 is located on the side of the second side pressure plate away from the first side pressure plate 241, the second fixing member 246 is located on the side of the second side pressure plate away from the first side pressure plate 241. The driving member 248 is connected to the limiting member 247 to position the limiting member 247 between the first fixing member 245 and the second fixing member 246. The first side pressure plate is fixedly connected to the mounting plate 244, and the second side pressure plate is slidably connected to the mounting plate 244, that is, the driving assembly can drive the second side pressure plate to move along the first direction toward or away from the first side pressure plate. The limiting assembly includes a first fixing member 245 and a limiting member 247. The first fixing member 245 is vertically connected to the mounting plate 244, extends toward the direction of the second side pressure plate, and is located on the side of the second side pressure plate away from the first side pressure plate 241. When the driving assembly drives the second side pressure plate to move along the first direction toward the first side pressure plate, the distance between the second side pressure plate and the first fixing member 5 increases, and the limiting member 247 is embedded between the first fixing member 245 and the second side pressure plate to increase the clamping force so as to stably clamp the battery cell module 2414 between the first side pressure plate 241 and the second side pressure plate.

[0084] Furthermore, the limiting assembly also includes a second fixing member and a driving member 248. The second fixing member is arranged on the side of the second side pressure plate away from the first side pressure plate 241, and the second fixing member is arranged opposite to the first fixing block. When the driving assembly drives the second side pressure plate toward the first side pressure plate along the first direction, the distance between the first fixing block and the second fixing member increases, and the driving member 248 drives the limiting member 247 to move so that the limiting member 247 is embedded between the first fixing block and the second fixing member.

[0085] In another embodiment, the limiting assembly includes two first fixing members 245 and two limiting members 247. The two first fixing members 245 are respectively vertically connected to the bottom surface of the mounting plate 244 and extend toward the side pressure plate. The two first fixing members 245 are respectively located on the side of the first side pressure plate 241 away from the second side pressure plate and the side of the second side pressure plate away from the first side pressure plate 241. When the driving assembly drives the first side pressure plate 241 and the second side pressure plate to move relative to each other, the distance between the first side pressure plate 241 and the second side pressure plate and the corresponding first fixing members 245 increases, and the limiting member 247 is embedded between the first side pressure plate and the first fixing member 245, and between the second side pressure plate and the first fixing member 245 to increase the clamping force. Furthermore, the limiting assembly also includes two second fixing members and two driving members 248. The two second fixing members are respectively located on the side of the first side pressure plate 241 away from the second side pressure plate and the side of the second side pressure plate away from the first side pressure plate. The second fixing members are arranged opposite to the first fixing block on the same side. When the driving assembly drives the first side pressure plate 241 and the second side pressure plate closer together, the distance between the first fixing block and the second fixing member on the same side increases, and the driving member 248 drives the corresponding limiting member 247 to move so that the limiting member 247 is correspondingly embedded between the first fixing member 245 and the second fixing member 246. On the basis of the above embodiment, further, the bottom surface of the mounting plate 244 is provided with a first slide rail and a second slide rail. The first slide rail extends in a first direction, and the second slide rail extends in a second direction. The first side pressure plate 241 or the second side pressure plate is slidably connected to the first end plate 2421 of the first slide rail or the second end plate 2422 of the second slide rail. The present application provides a first slide rail along the first direction and a second slide rail along the second direction on the bottom surface of the mounting plate 244, which helps the first side pressure plate 241 and the second side pressure plate to move closer or farther away along the first slide rail, and the first end plate 2421 and the second end plate 2422 to move closer or farther away along the second slide rail, thereby reducing friction, increasing movement speed, and speeding up the speed of clamping or removing the battery module 2414, thereby improving production efficiency. The drive assembly provided in the present application includes a first cylinder 249 and a second cylinder 2410. The drive end of the first cylinder 249 is connected to the first side pressure plate or the second side pressure plate, and the drive end of the second cylinder 2410 is connected to the first end plate 2421 and / or the second end plate 2422. In one embodiment, the first side pressure plate is fixedly connected to the mounting plate 244, the second side pressure plate is slidably connected to the mounting plate 244, and the driving end of the first cylinder 249 is connected to the second side pressure plate. When the first cylinder 249 is activated, the first cylinder 249 can drive the second side pressure plate to move in a first direction toward or away from the first side pressure plate to clamp or remove the battery module 2414. The first end plate is fixedly connected to the mounting plate 244, the second end plate is slidably connected to the mounting plate 244, and the driving end of the second cylinder 2410 is connected to the second end plate. When the second cylinder 2410 is activated, the second cylinder 2410 drives the second end plate to move in a second direction toward or away from the first end plate to clamp or remove the battery module 2414.On the basis of the above embodiment, the battery cell module clamping device further includes a pad 2411. Pads 2411 are provided on the opposite sides of the first side pressure plate 241 and the second side pressure plate, and pads 2411 are provided on the opposite sides of the first end plate 2421 and the second end plate 2422. Pads 2411 are also provided on the opposite sides of the first end plate 2421 and the second end plate 2422. When the first end plate 2421 and the second end plate 2422 are driven closer to clamp the battery cell module 2414 between the first end plate 2421 and the second end plate 2422, the pad 2411 is located between the battery cell module 2414 and the first end plate 2421 or the second end plate 2422, protecting the battery cell module 2414 and preventing the battery cell module 2414 from being damaged due to excessive clamping force. In this embodiment, there is no specific limitation on whether the pad 2411 on the opposite side of the first side pressure plate and the second side pressure plate is the same as the pad 2411 on the opposite side of the first end plate 2421 and the second end plate 2422. They can be the same or different. There is no specific limitation on the size of the pad 2411. It is sufficient to ensure that a pad 2411 is provided between the side pressure plate and the battery module 2414, and a pad 2411 is provided between the end plate and the battery module 2414. On the basis of the above embodiment, a plurality of clamping claws 243 are provided at the bottom of the first side pressure plate 241 and the bottom of the second side pressure plate, and the plurality of clamping claws 243 are spaced apart along the second direction. The battery module clamping device provided in this embodiment also includes a connecting member 2412 and a manipulator 2413. The connecting member 2412 is provided on the top surface of the mounting plate 244, and the manipulator 2413 is connected to the connecting member 2412. The connecting piece 2412 is set on the top surface of the mounting plate 244, and the manipulator 2413 is connected to the connecting piece 2412. The user can control the connecting piece 2412 through the manipulator 2413 to drive the battery cell module 2414 clamped between the first side pressure plate 241, the second side pressure plate, the first end plate 2421, the second end plate 2422 and the two side clamps 243 to move and adjust the working position of the battery cell module 2414.

Claims

1. A square battery cell production line, comprising: The cell segment processing system, module segment processing system and pack segment processing system are arranged in sequence along the processing direction; The cell segment processing system comprises a cell transport device, a cell gluing device and a partition feeding device which are sequentially arranged along the processing direction, wherein the cell transport device is used to put the cell on line, the cell gluing device is used to glue the cell, and the partition feeding device is used to put the partition on line so that the partition is glued to the cell; The module segment processing system includes a cell module stacking device, a cell module bundling and extruding device, a busbar welding device and a cell module clamping device which are sequentially arranged along the processing direction, the cell module stacking device is used to stack the cells after the partition installation to form a cell module, the cell module bundling and extruding device is used to shape the cell module, the busbar welding device is used to perform busbar welding on the cell module after the shaping is completed, and the cell module clamping device is used to transport the cell module; The Pack segment processing system is used to pack the processed battery cell modules.

2. The square battery cell production line according to claim 1, wherein: The Pack section processing system is provided with a box body on-line station, a cell module box-entering station, an accessory installation station and a testing station which are arranged in sequence along the processing direction; The box on-line station is used to transfer the box to the production line, the battery cell module box entry station is used to import the battery cell module into the box, the accessory installation station is used to install the accessories of the battery cell module, and the test station is used to test the installed battery cell module.

3. The square battery cell production line according to claim 2, wherein: The accessory installation station includes a front panel installation station, a copper busbar installation station and a cover plate installation station; The front panel installation station is used to install the front panel on the battery module after it is put into the box; The copper busbar installation station is used to install the copper busbar on the battery cell module after it is put into the box; The cover plate installation station is used to install a cover plate on the battery cell module after it is placed in the box.

4. The square battery cell production line according to claim 1, wherein: The square battery cell production line also includes: a plurality of NG offline devices, each of which is connected to at least one of the battery cell gluing device, the partition loading device, the battery cell module stacking device, the battery cell module bundling and extrusion device, the busbar welding device and the Pack section processing system, and is used to transport the battery cells or the battery cell modules with processing problems.

5. The square battery cell production line according to claim 1, wherein: The battery cell transfer device comprises: a mechanical arm, a battery cell variable distance grabbing mechanism and a disc-off mechanism; The battery cell variable-distance grasping mechanism includes a base, a variable-distance component and a clamping component. The base is installed on the robotic arm, the variable-distance mechanism is installed on the base and changes distance along the extension direction of the base, the clamping component is installed on the variable-distance component and is used to clamp the battery cell on the tray, and the tray-detaching mechanism is connected to the base and is used to squeeze the tray to separate the battery cell from the tray when the clamping component clamps the battery cell.

6. The square battery cell production line according to claim 1, wherein: The battery core gluing device comprises: a driving motor, a material unwinding roll, a material receiving roll and a roller assembly; The unwinding reel is used to supply a material strip including release paper and a segmented adhesive film, one end of the material strip is wound around the unwinding reel, and the other end of the material strip is wound around the receiving reel through the roller assembly, and the driving motor is transmission-connected to the receiving reel and the roller assembly.

7. The square battery cell production line according to claim 1, wherein: The partition loading device comprises: a partition loading unit, a conveyor line, and a partition loading unit, a partition cleaning unit, and a partition installation unit which are sequentially arranged along the transport direction of the conveyor line; The partition loading unit is arranged on one side of the loading end of the conveyor line; the partition online unit is arranged at the loading end of the conveyor line, and is used to transfer the partition on the partition loading unit to the conveyor line; the conveyor line is used to convey the partition; the partition cleaning unit includes two partition cleaning mechanisms and a partition flipping mechanism; the partition flipping mechanism is arranged between the two partition cleaning mechanisms; the partition installation unit is arranged at the unloading end of the conveyor line, and is used to install the partition on the battery cell.

8. The square battery cell production line according to claim 1, wherein: The battery cell module stacking device comprises: A mounting plate having a bearing surface, wherein the mounting plate has a stacking end and a feeding end which are arranged opposite to each other along a first direction of the bearing surface; A positioning assembly, including a positioning plate, disposed at the stacking end, wherein the side wall surface of the positioning plate facing the loading end forms a stacking surface, and the stacking surface and the carrying surface are used to jointly carry the battery cell; and A battery cell fixture, movably disposed on the carrying surface along the first direction, and having a movable stroke of reciprocating movement between the feeding end and the stacking end; The battery cell clamp is used to receive the battery cells at the loading end and clamp the battery cells to move toward the stacking end, so as to stack the battery cells on the stacking surface along the first direction.

9. The square battery cell production line according to any one of claims 1 to 8, wherein: The battery module bundling and extrusion device comprises: A stand, wherein the stand has a bundling position and a transfer position; A transfer mechanism, the transfer mechanism is used to switch between the bundling position and the transfer position; A shaping mechanism is arranged at the transfer position, and is used to shape the battery cell module on the transfer mechanism along the width direction of the battery cell module; an extrusion component is provided on the transfer mechanism, and the extrusion component is used to extrude the battery cell module on the transfer mechanism along the length direction of the battery cell module.

10. The square battery cell production line according to any one of claims 1 to 8, wherein: The battery cell module clamping device comprises: a first side pressing plate, a second side pressing plate, a first end plate, a second end plate, a clamping claw and a driving assembly, wherein the first side pressing plate and the second side pressing plate are arranged at intervals along a first direction, and the first end plate and the second end plate are arranged at intervals along a second direction, wherein the second direction is perpendicular to the first direction; the bottom of the first side pressing plate and the bottom of the second side pressing plate are both provided with the clamping claw, and the clamping claw extends along the first direction toward the adjacent first side pressing plate or the second side pressing plate; The driving assembly is used to drive the first side pressure plate and the second side pressure plate to move closer to or farther away from each other along the first direction, and to drive the first end plate and the second end plate to move closer to or farther away from each other along the second direction; A clamping space is formed between the first side pressure plate, the second side pressure plate, the first end plate, the second end plate and the clamping claws, and the clamping space is used to clamp the battery cell module.

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