Assembly line system for general assembly of battery modules
By integrating equipment into the battery module assembly line system, the problems of cell falling and positioning accuracy during stacking into the box were solved, achieving efficient production and high-quality battery module manufacturing.
Patent Information
- Application Number
- CN202423005764.8
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-12-06
- Publication Date
- 2025-10-28
- Estimated Expiration
- 2034-12-06
AI Technical Summary
Existing battery cells are prone to falling out when stacked in the box, and their positioning accuracy is poor, resulting in a decline in the quality of battery module products.
The system employs a double-speed chain system combined with gripping and feeding equipment, module sorting equipment, battery adjustment equipment, module clamping equipment, cleaning equipment, and welding equipment. Through processes such as gripping, scanning, measuring, adjusting, clamping, cleaning, and welding by a robotic arm, it ensures the consistency of battery cell quality and positioning accuracy.
It improved the first-pass yield and final yield of the battery module assembly line, increased production efficiency, and reduced production cycle and cost.
Smart Images
Figure CN223476591U_ABST
Abstract
Description
Technical Field
[0001] This utility model relates to an assembly line, specifically a battery module assembly line system, and belongs to the field of battery production technology. Background Technology
[0002] After battery cells are stacked into large modules, they need to be assembled into a housing to create the required single-row or double-row battery modules. In existing cell stacking and housing processes, a transfer mechanism is mainly used to pick up the stacked cells and place them into the housing. While this mechanism can stably hold single-row cell stacks, it is unsuitable for stacks of two or more rows. There is a risk of cells falling during the pick-up process. Even with added anti-fall mechanisms, it's impossible to completely prevent collapse and falling of the cell stacks during transfer. Furthermore, the transfer mechanism becomes more complex and cumbersome, and more prone to failure. Additionally, this method of directly inserting single-row cells into the housing results in poor positioning accuracy, causing misalignment of the cells within the housing. This leads to misalignment of the terminals during subsequent CCS module welding, reducing the overall quality of the assembled battery module.
[0003] Therefore, a battery module assembly line system is proposed here. Summary of the Invention
[0004] This invention proposes a battery module assembly line system to solve the problems of easy cell falling and poor positioning accuracy when the cell stack is placed into the box in the prior art.
[0005] This utility model is achieved through the following technical solution: a battery module assembly line system, including a double-speed chain connecting all equipment and a gripping and feeding device set on the side of the double-speed chain, and also including a module sorting device, a battery adjustment device, a module clamping device, a cleaning device and a welding device installed in sequence.
[0006] The module sorting equipment is used for scanning the barcode of individual battery cells, as well as measuring the internal resistance and voltage of the battery cells;
[0007] The module clamping device includes a gantry, a lateral movement module, a movement locking module, and a fixing module. The module clamping device is used to clamp multiple stacked battery cells according to preset clamping parameters.
[0008] The cleaning equipment includes a laser cleaning head, a cleaning head, and a three-axis moving module. The cleaning equipment uses the Z-axis laser cleaning head to raise and lower the focal length, and the XY-axis to move and clean the battery cell terminals.
[0009] The welding equipment includes a laser welding module and a data acquisition line welding module. The welding equipment captures the welding point by carrying a CCD, then measures the distance, and moves into place according to the captured coordinates before the pneumatic pressure claw presses down to perform cell electrode welding.
[0010] Furthermore, the gripping and feeding device uses a robotic arm to grip and place individual battery cells sequentially onto the feed chain of the module sorting device for feeding.
[0011] Furthermore, the module sorting device includes a barcode scanning module and an OVC testing module. The OVC testing module measures the voltage and internal resistance of the battery cell by pressing down a measuring probe. After the measurement is completed, the battery cell moves to the barcode scanning and probe measurement position, and according to the test results, OK battery cells enter the OK channel and NG battery cells enter the NG channel.
[0012] Furthermore, the battery adjustment device includes an orientation adjustment module, a position adjustment module, and a module stacking device. The battery adjustment device adjusts the orientation and position of individual cells by grasping, arranging, rotating, and rotating flat / vertical placement of modules, and then stacks the adjusted individual cells.
[0013] Furthermore, the laser welding module includes a welding machine, a dust collector, and a chiller. The welding machine uses a BLF-CW6000 continuous laser, and the chiller is model CWFL-6000ANS.
[0014] Furthermore, it also includes a CCD visual polarity detector, which is installed between the module clamping device and the cleaning device. The CCD visual polarity detector includes a camera, a tester, and a light source. The CCD visual polarity detector moves along the X and Y axes to scan the cell range to the next position.
[0015] Furthermore, it also includes a transfer mechanism, which is movably mounted on the speed-multiplying chain and corresponds to the module sorting equipment and the cleaning equipment, respectively. The transfer mechanism is used to transfer unqualified cells to the NG channel.
[0016] The cleaning equipment is specifically a polar laser cleaning machine.
[0017] The double-speed chain is used to transport pallets, and corresponding blocking or positioning mechanisms are set at each workstation to ensure that the pallet can be accurately positioned on each device.
[0018] This utility model provides a battery module assembly line system, which has the following beneficial effects:
[0019] The battery module assembly line system first uses module analysis equipment to measure the internal resistance and voltage of individual cells, performing an initial screening of cell quality to ensure consistency. After screening, the position and orientation of the cells are adjusted to prevent misalignment of the terminals during clamping. Subsequently, the module clamping equipment clamps the adjusted cells according to preset clamping parameters to maintain consistency and prevent problems such as collapse and falling of the cell stack during transfer.
[0020] The battery module assembly line system has a first-pass yield of no less than 98.5% (excluding defective incoming materials) and a final yield of no less than 99.5% (excluding defective incoming materials). The production efficiency of the entire line is ≥4ppm (processing ≥4 cells per minute), which can increase output, reduce production cycle, and reduce the production cost per unit product. Attached Figure Description
[0021] Figure 1 This is a schematic diagram of the feeding device in this utility model;
[0022] Figure 2 This is a schematic diagram of the component sorting device in this utility model;
[0023] Figure 3 This is a schematic diagram of the battery adjustment device in this utility model;
[0024] Figure 4 This is a schematic diagram of the structure of the module clamping device in this utility model;
[0025] Figure 5 This is a schematic diagram of the CCD visual polarity detection machine in this utility model;
[0026] Figure 6 This is a schematic diagram of the cleaning equipment in this utility model;
[0027] Figure 7 This is a schematic diagram of the welding equipment in this utility model.
[0028] Explanation of reference numerals in the attached figures
[0029] 1. Double-speed chain conveyor; 2. Feeding equipment; 3. Transfer mechanism; 4. Module sorting equipment; 5. Battery adjustment equipment; 6. Module clamping equipment; 7. CCD vision polarity detection machine; 8. Cleaning equipment; 9. Welding equipment. Detailed Implementation
[0030] The technical solutions of the embodiments of this application will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only a part of the embodiments of this application, and not all of the embodiments. Based on the embodiments of this application, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of this application.
[0031] Please see Figures 1 to 7 This utility model provides a battery module assembly line system, including a double-speed chain 1 connecting all equipment and a gripping and feeding device 2 set on the side of the double-speed chain 1. It also includes a module sorting device 4, a battery adjustment device 5, a module clamping device 6, a cleaning device 8, and a welding device 9 installed sequentially. The double-speed chain 1 is used to transport pallets, with corresponding blocking or positioning mechanisms set at each station to ensure the pallets can be accurately positioned on each device. The gripping and feeding device 2 uses a robotic arm to grip and place individual battery cells sequentially onto the feed chain of the module sorting device 4. This battery module assembly line system first uses a module analysis device to measure the internal resistance and voltage of individual battery cells, performing a first screening of the cell quality to ensure consistency. After screening, the position and orientation of the cells are adjusted to prevent misalignment of the terminals during clamping. Subsequently, the module clamping device 6 clamps the adjusted cells according to preset clamping parameters to maintain consistency and prevent collapse and falling of the cell stack during transfer.
[0032] Please refer to this carefully. Figure 2 The module sorting device 4 is used for scanning the barcode of individual battery cells, as well as measuring the internal resistance and voltage of the battery cells. The module sorting device 4 includes a barcode scanning module and an OVC test module. The OVC test module measures the voltage and internal resistance of the battery cells by pressing down the measuring probe. After the measurement is completed, the battery cell moves to the barcode scanning and probe measurement position, and according to the test results, OK battery cells enter the OK channel and NG battery cells enter the NG channel.
[0033] Please refer to this carefully. Figure 3 The battery adjustment device 5 includes an orientation adjustment module, a position adjustment module, and a module stacking device. The battery adjustment device 5 adjusts the orientation and position of individual cells by grabbing, arranging, rotating, and rotating flat / vertical, and then stacks the adjusted individual cells.
[0034] Please refer to this carefully. Figure 4 The module clamping device 6 includes a gantry, a lateral movement module, a movement locking module, and a fixing module. The module clamping device 6 is used to clamp multiple stacked cells according to preset clamping parameters.
[0035] Please refer to this carefully. Figure 6The cleaning equipment 8 includes a laser cleaning head, a cleaning head, and a three-axis moving module. The cleaning equipment 8 uses the Z-axis to raise and lower the laser cleaning head to position the focal length, and the XY-axis to move and clean the battery cell electrode. Specifically, the cleaning equipment 8 is an electrode laser cleaning machine.
[0036] Please refer to this carefully. Figure 7 The welding equipment 9 includes a laser welding module and a data acquisition line welding module. The welding equipment 9 captures the welding point by carrying a CCD, then measures the distance, and moves to the position according to the captured coordinates before the pneumatic pressure claw presses down to perform cell electrode welding. The laser welding module includes a welding machine, a dust collector, and a chiller. The welding machine uses a BLF-CW6000 continuous laser, and the chiller is model CWFL-6000ANS.
[0037] Please refer to this carefully. Figure 5 It also includes a CCD vision polarity detector 7, which is installed between the module clamping device 6 and the cleaning device 8. The CCD vision polarity detector 7 includes a camera, a tester and a light source. The CCD vision polarity detector 7 moves through the X and Y axes to scan the cell range to the next position.
[0038] Please refer to this carefully. Figure 1 It also includes a transfer mechanism 3, which is mounted on the double-speed chain 1 and corresponds to the module sorting equipment 4 and the cleaning equipment 8 respectively. The transfer mechanism 3 is used to transfer unqualified cells to the NG channel.
[0039] The battery module assembly line system has a first-pass yield of no less than 98.5% (excluding defective incoming materials) and a final yield of no less than 99.5% (excluding defective incoming materials). The production efficiency of the entire line is ≥4ppm (processing ≥4 cells per minute), which can increase output, reduce production cycle, and reduce the production cost per unit product.
[0040] In use, the device is first connected to an external control device and a 220V mains power supply. The control device can be a conventional known device such as a computer. Then, the battery cell is placed in the designated position, and the battery module is assembled by the following steps: module gripping and feeding, barcode scanning, OCV testing, module sorting, rotating the battery / rotating and laying it flat, manual adhesive application, rotating the battery / rotating and erecting it, rotating the battery polarity, module gripping and stacking, clamping, CCD polarity detection, laser cleaning of the terminal post, laser welding of the aluminum busbar and the acquisition line.
[0041] The above shows and describes the basic principles, main features and advantages of the present invention. Those skilled in the art should understand that the present invention is not limited to the above embodiments. The above embodiments and descriptions are merely illustrative of the principles of the present invention. Various changes and improvements may be made to the present invention without departing from the spirit and scope of the present invention. Such changes and improvements are intended to fall within the scope of the present invention. The scope of protection claimed in this invention is defined by the appended claims and their equivalents.
Claims
1. A battery module assembly line system, comprising a high-speed conveyor belt (1) connecting all equipment and a gripping and feeding device (2) disposed on the side of the high-speed conveyor belt (1), characterized in that: It also includes a module sorting device (4), a battery adjustment device (5), a module clamping device (6), a cleaning device (8), and a welding device (9) installed in sequence. The module sorting device (4) is used for cell scanning of individual cells, as well as for measuring the internal resistance and voltage of the cells; The module clamping device (6) includes a gantry, a lateral movement module, a movement locking module and a fixing module. The module clamping device (6) is used to clamp multiple stacked cells according to preset clamping parameters. The cleaning device (8) includes a laser head, a cleaning head and a three-axis moving module. The cleaning device (8) uses the Z-axis laser cleaning head to raise and lower the focal length and the XY-axis to move and clean the battery cell electrode. The welding equipment (9) includes a laser welding module and a data acquisition line welding module. The welding equipment (9) captures the welding point by carrying a CCD, then measures the distance, moves to the position according to the captured coordinates, and then presses down with a pneumatic claw to perform cell electrode welding.
2. The battery module assembly line system according to claim 1, characterized in that: The gripping and feeding device (2) uses a robotic arm to grip and place individual battery cells sequentially onto the feed chain of the module sorting device (4) for feeding.
3. The battery module assembly line system according to claim 1, characterized in that: The module sorting device (4) includes a barcode scanning module and an OVC testing module. The OVC testing module measures the voltage and internal resistance of the battery cell by pressing down the measuring probe. After the measurement is completed, the battery cell moves to the barcode scanning and probe measurement position. According to the test results, OK battery cells enter the OK channel and NG battery cells enter the NG channel.
4. The battery module assembly line system according to claim 1, characterized in that: The battery adjustment device (5) includes a direction adjustment module, a position adjustment module and a module stacking device. The battery adjustment device (5) adjusts the direction and position of a single cell by grabbing, arranging, rotating and rotating flat / vertical, and stacking the adjusted single cells.
5. A battery module assembly line system according to claim 1, characterized in that: The laser welding module includes a welding machine, a dust collector, and a chiller. The welding machine uses a BLF-CW6000 continuous laser, and the chiller is model CWFL-6000ANS.
6. The battery module assembly line system according to claim 1, characterized in that: It also includes a CCD visual polarity detector (7), which is installed between the module clamping device (6) and the cleaning device (8). The CCD visual polarity detector (7) includes a camera, a tester and a light source. The CCD visual polarity detector (7) moves along the X and Y axes to scan the cell range to the next position.
7. A battery module assembly line system according to claim 1, characterized in that: It also includes a transfer mechanism (3), which is movably mounted on the speed-multiplying chain (1) and corresponds to the module sorting device (4) and the cleaning device (8) respectively. The transfer mechanism (3) is used to transfer unqualified cells to the NG channel.