Automated assembly process and apparatus for negative battery cover plate

Abstract

The application discloses an automatic assembling process of a negative battery cover plate, which comprises the steps of negative bus bar code marking screening, assembling and welding, helium detection, anti-explosion valve film pasting and tray stacking. The automatic assembling equipment comprises a negative bus bar code marking screening device, an assembling and welding device, a helium detection device, an anti-explosion valve film pasting device, a tray stacking device and an identification code marking association host computer. The identification code marking association host computer is in communication connection with the negative bus bar code marking screening device, the assembling and welding device, the helium detection device and the anti-explosion valve film pasting device. The application meets the process requirement of the whole flow of the assembling of the negative battery cover plate, realizes consistent monitoring and recording of the code, and makes NG tracking more efficient and reasonable. The equipment production line is constructed skillfully, and the automatic assembling production operation is efficient and smooth. According to the process, the automatic operation of the whole flow of the equipment is realized, the process cooperation is stable and smooth, and the layout is compact.

Description

Technical Field

[0001] This invention relates to an automated assembly process and equipment for negative electrode battery cover plates, belonging to the technical field of negative electrode battery cover plate assembly and production. Background Technology

[0002] The power battery system (power battery PACK, battery pack) is the core energy source that provides driving power for new energy vehicles and is one of the most critical components of new energy vehicles. The power battery system mainly consists of battery modules, electrical systems, thermal management systems, housings, and BMS, etc. The housing encapsulates the battery modules, electrical systems, thermal management systems, and BMS, forming the main body of the power battery system.

[0003] Power batteries generally include cylindrical batteries and blade batteries. Both cylindrical and blade batteries have battery covers with electrodes. Battery cover assembly includes the assembly of the cover and the busbar, welding of the cover and the busbar, welding inspection, internal resistance testing, helium testing, and film application.

[0004] There is currently a negative electrode battery cover plate, which is assembled and welded together by the cover plate body and the negative electrode busbar. The cover plate body is a disc with an eccentric explosion-proof valve. The negative electrode busbar includes a circular end and a connecting end connected to the circular end. The outer periphery of the circular end has an outer periphery notch.

[0005] In the assembly and production of negative electrode battery cover plates, welding is required between the cover plate body and the negative electrode busbar. After welding, corresponding welding inspection, internal resistance testing, and helium testing are necessary. After passing the inspection, the eccentric explosion-proof valve film application is also required. In traditional processes, the welding, welding inspection, internal resistance testing, helium testing, and film application are generally carried out sequentially. However, the production process involves a large number of defective (NG) products. These NG products are removed as each stage of the process. The yield rate of negative electrode battery cover plates is currently relatively low, resulting in a large number of NG products. These NG products have many classifications, such as: relative position deviation before welding, scrap after welding, internal resistance classification differences, helium test classification differences, and film application NG. It is difficult to achieve product tracking in traditional processes. Separate NG product sorting is required after each process to achieve accurate NG product classification. However, it is difficult to achieve a reasonable layout of the supporting process equipment, resulting in low assembly efficiency. Summary of the Invention

[0006] The purpose of this invention is to address the shortcomings of the prior art and to solve the problems of long assembly and production cycles and difficult equipment layout and construction caused by the difficulty in tracking product production in traditional processes. This invention proposes an automated assembly process and equipment for negative electrode battery cover plates.

[0007] To achieve the above objectives, the technical solution adopted by the present invention is as follows:

[0008] An automated assembly process for a negative electrode battery cover plate, wherein the negative electrode battery cover plate includes a cover plate body, a negative electrode busbar, and an explosion-proof valve film. The cover plate body is a disc with an eccentric explosion-proof valve. The negative electrode busbar includes an annular end and a connecting end connected to the annular end. The outer periphery of the annular end has an outer periphery notch. The disc has a first disc surface and a second disc surface. The negative electrode busbar has a first busbar surface and a second busbar surface.

[0009] The automated assembly process includes the following steps:

[0010] S1 negative busbar coding and screening: The negative busbar is laser-coded with the first side facing up to form an identification code. After the identification code is effectively identified, it is flipped over to provide a busbar with the first side facing down containing the code.

[0011] S2 assembly and welding involves sequentially supplying the disk with the second side facing upwards, pre-assembly of the code-containing busbar stacked on the disk, pre-assembly inspection, assembly and welding, welding inspection, internal resistance inspection, and unloading of welded good and welded bad products; the results of welding inspection and internal resistance inspection are associated with the corresponding identification code.

[0012] S3 helium gas testing: For welded good products, helium gas testing is performed with the second side of the disk facing upwards. After helium gas testing, good products and bad products are unloaded. Good products are flipped over and output. The helium test results are associated with the corresponding identification code.

[0013] S4 explosion-proof valve film is applied to the eccentric explosion-proof valve on the first side of the disc body of the helium-tested good product after flipping. After the film is applied, the good product and the bad product are unloaded. The application result is associated with the corresponding identification code.

[0014] The S5 tray stacking process involves transferring and palletizing products that fit the packaging.

[0015] The present invention also proposes an automated assembly equipment for a negative electrode battery cover plate, for the automated assembly process of the negative electrode battery cover plate;

[0016] It includes a negative electrode busbar coding and screening device, an assembly and welding device, a helium gas detection device, an explosion-proof valve film application device, a tray stacking device, and an identification code association host. The identification code association host is communicatively connected to the negative electrode busbar coding and screening device, the assembly and welding device, the helium gas detection device, and the explosion-proof valve film application device.

[0017] The negative electrode busbar coding and screening device includes a rotating disk with several busbar carriers, a busbar loading station, a busbar coding station, a busbar identification station, and a busbar unloading station arranged sequentially along the rotating disk. The busbar loading station is equipped with a busbar supply mechanism. The busbar coding station is equipped with a laser coding mechanism for laser coding on the first surface of the busbar. The busbar identification station includes a barcode scanning and identification mechanism. The busbar unloading station includes an NG turnover mechanism and a flipping conveyor mechanism. The flipping conveyor mechanism includes a flipping section for flipping the negative electrode busbar, a busbar conveyor belt for outputting the negative electrode busbar, and a busbar turnover section for switching displacement between the flipping section and the busbar conveyor belt.

[0018] The assembly and welding device includes an assembly rotary table with several sets of loading seats, a disc loading station, a manifold assembly station, an assembly inspection station, a welding station, a post-weld inspection station, an internal resistance inspection station, and an unloading station arranged sequentially along the rotation direction of the assembly rotary table. The disc loading station includes a disc supply mechanism and a disc loading mechanism for switching displacement between the disc supply mechanism and the loading seats. The manifold assembly station includes a manifold loading transfer mechanism for switching displacement between the discharge end of the manifold conveyor belt and the loading seats. The assembly inspection station... The station includes an assembly inspection mechanism for detecting the relative position of the negative electrode busbar and the disk body; the welding station includes a laser welding mechanism and a welding locking part with lifting displacement for pressing the negative electrode busbar; the post-weld inspection station includes a welding vision inspection mechanism for welding assembly inspection; the internal resistance detection station includes an internal resistance detection mechanism for performing internal resistance detection; and the unloading station includes an NG conveyor belt, an assembled good product conveyor belt, and an assembly transfer mechanism for material turnover between the assembly loading seat and the NG conveyor belt and between the assembly loading seat and the assembled good product conveyor belt.

[0019] The helium detection device includes a helium detection loading station, a helium detection unloading station, and a helium detection mechanism disposed between the helium detection loading station and the helium detection unloading station. The helium detection mechanism includes at least one helium detection station and a material switching displacement mechanism for switching material stations. The helium detection loading station includes a secondary positioning carrier and a material transfer mechanism for switching displacement between the secondary positioning carrier and the assembled good product conveyor belt. The helium detection unloading station includes an NG discharge belt and a good product turning mechanism for turning over the material. The helium detection station includes a helium detection top chamber and a helium detection carrier with linear displacement disposed at the bottom of the helium detection top chamber. The material switching displacement mechanism has switching displacement between the secondary positioning carrier and the helium detection carrier, between the helium detection carrier and the NG discharge belt, and between the helium detection carrier and the good product turning mechanism.

[0020] The explosion-proof valve film-applying device includes a product rotating disk with several product carriers, a product loading station, a film-applying station, and an unloading station arranged sequentially along the rotation direction of the product rotating disk. The product loading station includes a product loading conveyor belt for receiving the product discharged from the good product flipping mechanism and a product transfer mechanism for switching displacement between the product loading conveyor belt and the product carrier. The film-applying station includes a protective film supply mechanism, a transfer and adhesive mechanism for transferring and applying the protective film between the product carrier and the protective film supply mechanism, and a film-applying visual inspection mechanism for film-applying detection. The unloading station includes an NG finished product conveyor belt and a finished product unloading belt, and a finished product transfer mechanism for rotating displacement between the product carrier and the NG finished product conveyor belt and between the product carrier and the NG finished product conveyor belt.

[0021] The palletizing and stacking device includes a finished product stacking mechanism and a stacking transfer mechanism for shifting and moving between the finished product unloading belt and the finished product stacking mechanism.

[0022] Preferably, the manifold conveyor belt includes a manifold circulation conveyor rail with several manifold positioning carriers, and the manifold positioning carriers are provided with manifold positioning grooves that are similar in shape to the negative manifold.

[0023] Preferably, the manifold supply mechanism includes a manifold magazine feeding turntable and a manifold transfer unit for switching displacement between the discharge end of the manifold magazine feeding turntable and the manifold carrier.

[0024] Preferably, the disc feeding mechanism includes a disc circulation feeding section, a disc conveying rail with a plurality of disc positioning carriers, and a disc feeding turnover mechanism for displacement switching between the disc circulation feeding section and the disc positioning carriers.

[0025] Preferably, the disc loading station includes a disc visual guidance mechanism that is communicatively connected to the disc loading mechanism for visually guiding the loading of the disc loading mechanism.

[0026] Preferably, the manifold assembly station includes a manifold secondary positioning and shaping fixture disposed between the manifold conveyor belt and the assembly loading seat, and the manifold loading and transfer mechanism includes a negative pressure pickup part having linear displacement, lifting displacement and rotational displacement, and the negative pressure pickup part is provided with at least two manifold negative pressure adsorption ends disposed at intervals.

[0027] Preferably, the assembled product conveyor belt includes an assembly component circulation feed rail with several assembly component carriers, and the unloading station includes a steering adjustment mechanism disposed on the transfer path of the assembly component transfer mechanism for adjusting the steering angle of the assembled products.

[0028] Preferably, the helium detection device is provided with a re-inspection buffer mechanism located on the displacement path of the material switching displacement mechanism. The re-inspection buffer mechanism includes a re-inspection carrier with linear displacement, and the re-inspection carrier is provided with a plurality of re-inspection slots.

[0029] Preferably, the explosion-proof valve film application device includes a film application visual guidance mechanism that is communicatively connected to the transfer and adhesive mechanism.

[0030] The beneficial effects of this invention are mainly reflected in:

[0031] 1. Meets the process requirements of the entire assembly process of the negative electrode battery cover, realizes consistent monitoring and recording of production with marking, and makes NG tracking more efficient and reasonable.

[0032] 2. The equipment production line is cleverly designed, and the automated assembly production runs efficiently and smoothly.

[0033] 3. The equipment achieves fully automated operation throughout the entire process, with stable and smooth coordination of processes and a compact layout. Attached Figure Description

[0034] Other features, objects, and advantages of this application will become more apparent from the following detailed description of non-limiting embodiments with reference to the accompanying drawings:

[0035] Figure 1 This is a process flow diagram of the automated assembly process of the negative electrode battery cover plate of the present invention.

[0036] Figure 2 This is a schematic diagram of the overall structure of the automated assembly equipment for the negative electrode battery cover plate of the present invention.

[0037] Figure 3 This is a schematic diagram of the negative electrode busbar coding and screening device in this invention.

[0038] Figure 4 This is a schematic diagram of the assembly and welding device in this invention.

[0039] Figure 5 This is a schematic diagram of the helium detection device in this invention.

[0040] Figure 6 This is a schematic diagram of the explosion-proof valve film-applying device in this invention.

[0041] Figure 7 This is a schematic diagram of the pallet stacking device in this invention.

[0042] Figure 8 This is a schematic diagram of the assembly structure of the negative electrode battery cover plate in this invention. Detailed Implementation

[0043] To make the objectives, technical solutions, and advantages of the embodiments of the present invention clearer, the technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present invention, not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0044] The present application will now be described in further detail with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are merely illustrative of the invention and not intended to limit it. Furthermore, it should be noted that, for ease of description, only the parts relevant to the invention are shown in the accompanying drawings. It should be noted that, unless otherwise specified, the embodiments and features described in the present application can be combined with each other.

[0045] This invention provides an automated assembly process for negative electrode battery cover plates, such as... Figure 8 As shown, the negative electrode battery cover plate includes a cover plate body 100, a negative electrode busbar 200, and an explosion-proof valve film 300. The cover plate body 100 is a disc with an eccentric explosion-proof valve. The negative electrode busbar 200 includes an annular end 400 and a connecting end 500 connected to the annular end. The outer periphery of the annular end has an outer periphery notch 600. The disc has a first disc surface and a second disc surface. The negative electrode busbar has a first busbar surface and a second busbar surface.

[0046] like Figure 1 As shown, the automated assembly process includes the following steps:

[0047] Negative busbar coding and screening: The negative busbar is laser-coded with its first side facing up to form an identification code. After the identification code is effectively identified, it is flipped over to provide a busbar with the first side facing down containing the code.

[0048] Assembly and welding are performed sequentially, including feeding the disk with the second side facing up, pre-assembly of the coded busbar stacked on the disk, pre-assembly inspection, assembly and welding, welding inspection, internal resistance inspection, and unloading of welded good and welded bad products; the results of welding inspection and internal resistance inspection are associated with the corresponding identification code.

[0049] Helium gas testing: For welded good products, helium gas testing is performed with the second side of the disc facing upwards. After helium gas testing, good products and bad products are unloaded. Good products are flipped over and output. The helium test results are associated with the corresponding identification code.

[0050] After the explosion-proof valve film is applied to the eccentric explosion-proof valve on the first side of the disc body of the helium-tested good product after flipping, the film is tested for adhesion and the good and bad products are unloaded. The adhesion result is associated with the corresponding identification code.

[0051] The products are then loaded and stacked, and the properly fitted products are transferred and stacked.

[0052] Specific operation process:

[0053] When welding the cover plate body 100 and the negative electrode busbar 200, the first side of the negative electrode busbar 200 and the second side of the disc body are required to be welded together. After welding, the explosion-proof valve film 300 is applied to the first side of the cover plate body 100.

[0054] In traditional processes, a negative electrode manifold 200 is conveyed with its first side facing down, and then assembled and welded with the second side of the disc facing up. After welding, the product is flipped over and the explosion-proof valve film 300 is applied. Because the welded product needs to undergo multiple inspections, such as welding quality, internal resistance, and helium testing, unloading NG (noise, waste, or defects) at each step is very cumbersome, resulting in a large production line. Furthermore, centralized NG collection is inconvenient, requiring independent collection and classification at each NG location. Transportation and recycling are also quite complicated, making it difficult to meet quality control requirements.

[0055] In this invention, the negative electrode busbar is first screened by laser marking. The first surface of the negative electrode busbar is laser-marked to form an identification code 700. After effective identification of the code, the busbar is flipped over, providing a busbar with the first surface facing down containing the code. This creates a laser identification code on the exposed surface, satisfying both the requirement for NG (Not In order to receive) information identification and the requirement for traceability via barcode scanning.

[0056] Next, assembly and welding are carried out, in sequence: supplying the disk with the second side facing up, pre-assembly of the coded busbar stacked on the disk, pre-assembly inspection, assembly and welding, welding inspection, internal resistance inspection, and unloading of welded good and welded bad products; the results of welding inspection and internal resistance inspection are associated with the corresponding identification code.

[0057] This means that NG materials for pre-assembly inspection, welding inspection, and internal resistance inspection are all unloaded from the same NG material. NG materials can be collected and their categories can be identified by scanning codes at the back end, making operation and NG classification easy.

[0058] By using identification codes, more detailed classifications can be achieved. For example, for products that are pre-assembled and fail inspection, the cover plate body 100 and the negative electrode busbar 200 are separate, so they can be recycled. Welding inspection and internal resistance inspection have different classifications, such as setting primary classification thresholds, secondary classification thresholds, and scrap thresholds for internal resistance. This allows the classification information to be linked to the identification code, enabling more comprehensive classification in the later stages, facilitating recycling, and improving the utilization rate of NG products.

[0059] Products that pass welding undergo helium testing. Good welded products are tested with the second side of the disc facing upwards. After helium testing, good and bad products are unloaded. Good products are flipped over and output. The helium test results are associated with the corresponding identification code. This process is implemented using an independent line.

[0060] After all tests are passed, the explosion-proof valve film is applied to the eccentric explosion-proof valve on the first side of the disc body of the helium-tested good product after flipping it over. After the adhesion test is performed, the good and bad products are unloaded. The adhesion result is associated with the corresponding identification code. It can realize the association of explosion-proof valve film detection information. Under normal circumstances, the explosion-proof valve film can be peeled off and reprocessed, so it is a recyclable product. On the other hand, the built-in information can remind you of the number of times the film can be applied. When the number of times the film can be applied exceeds the standard and fails to pass the test, it can provide information parameters for equipment adjustment.

[0061] Finally, the products are palletized and stacked. The fit products are then transferred and palletized. Palletizing is an existing technology and will not be described in detail here.

[0062] Due to innovative optimizations made to the process of the negative electrode battery cover plate, and in order to meet the requirements of fully automated operation of the process and design the layout of production line equipment, an automated assembly equipment for the negative electrode battery cover plate is proposed.

[0063] like Figures 2 to 8 As shown, the device includes a negative electrode busbar coding and screening device 1, an assembly and welding device 2, a helium gas detection device 3, an explosion-proof valve film application device 4, a tray stacking device 5, and an identification code association host. The identification code association host is communicatively connected to the negative electrode busbar coding and screening device, the assembly and welding device, the helium gas detection device, and the explosion-proof valve film application device, respectively. The illustration of the identification code association host is omitted in the attached figure. It is connected to each device in a communicative manner, enabling data acquisition and association. The method of establishing data interaction through communication is existing technology and will not be described in detail here.

[0064] In this case, if Figure 3As shown, the negative electrode busbar coding and screening device includes a rotating disk 10 with several busbar carriers 11, a busbar loading station 12, a busbar coding station 13, a busbar identification station 14, and a busbar unloading station 15 arranged sequentially along the rotating disk. The busbar loading station is equipped with a busbar supply mechanism 120, the busbar coding station is equipped with a laser coding mechanism 130 for laser coding on the first surface of the busbar, the busbar identification station includes a barcode scanning and identification mechanism 140, and the busbar unloading station includes an NG turnover mechanism 151 and a flipping conveyor mechanism 152. The flipping conveyor mechanism includes a flipping section 1521 for flipping the negative electrode busbar, a busbar conveyor belt 1522 for outputting the negative electrode busbar, and a busbar turnover section 1523 for switching the displacement between the flipping section and the busbar conveyor belt.

[0065] Specifically, the negative electrode manifold is first screened and fed by coding. The manifold supply mechanism 120 supplies the manifold. The first side facing the top is coded by the laser coding mechanism 130 and then switched to the barcode scanning and identification mechanism 140 by the rotating disk 10. After scanning and identification, the manifold is classified and unloaded. NG products are directly discharged and unloaded by the NG turnover mechanism 151. Good products are flipped by the flipping part 1521 and picked up by the manifold turnover part 1523 and placed on the manifold conveyor belt 1522. The manifold conveyor belt 1522 supplies materials to the next process equipment.

[0066] like Figure 4 As shown, the assembly and welding device 2 includes an assembly rotary disk 20 with several sets of loading seats 21, a disc loading station 22, a manifold assembly station 23, an assembly inspection station 24, a welding station 25, a post-weld inspection station 26, an internal resistance inspection station 27, and an unloading station 28 arranged sequentially along the rotation direction of the assembly rotary disk.

[0067] The disc loading station 22 includes a disc supply mechanism 221 and a disc loading mechanism 222 for switching displacement between the disc supply mechanism and the assembly loading seat. The manifold assembly station 23 includes a manifold loading transfer mechanism 230 for switching displacement between the discharge end of the manifold conveyor belt and the assembly loading seat. The assembly inspection station includes an assembly inspection mechanism 240 for detecting the relative position of the negative electrode manifold and the disc. The welding station includes a laser welding mechanism 251 and a welding locking part 252 with lifting displacement for pressing the negative electrode manifold. The post-weld inspection station 26 includes a welding vision inspection mechanism 260 for welding assembly inspection. The internal resistance inspection station 27 includes an internal resistance inspection mechanism 270 for performing internal resistance inspection. The unloading station includes an NG conveyor belt 281, an assembled good product conveyor belt 282, and an assembly transfer mechanism 283 for material turnover between the assembly loading seat and the NG conveyor belt and between the assembly loading seat and the assembled good product conveyor belt.

[0068] Specifically, the disc supply mechanism 221 supplies the cover plate body, the disc loading mechanism 222 picks up the cover plate body and mounts it on the assembly loading seat 21, and switches the station to the manifold assembly station 23. At this time, the manifold loading and transfer mechanism 230 picks up the flipped negative manifold supplied by the negative manifold coding and screening device and assembles it on the assembly loading seat 21. Its connecting end 500 is partially stacked on the cover plate body to achieve pre-assembly. Then it enters the assembly inspection station. The assembly inspection mechanism 240 performs assembly relative position measurement. If the measurement is qualified, it is welded and assembled by the laser welding mechanism 251. After welding and assembly, it passes through the welding vision inspection mechanism 260 and the internal resistance inspection mechanism 270 for relevant inspections. Finally, at the unloading station 28, it is classified according to the inspection results and unloaded by the assembly transfer mechanism 283 onto the NG conveyor belt 281 or the assembled good product conveyor belt 282.

[0069] like Figure 5 As shown, the helium detection device 3 includes a helium detection loading station 31, a helium detection unloading station 32, and a helium detection mechanism 33 disposed between the helium detection loading station and the helium detection unloading station. The helium detection mechanism 33 includes at least one helium detection station 331 and a material switching displacement mechanism 332 for switching material stations. The helium detection loading station includes a secondary positioning carrier 311 and a material transfer mechanism 312 for switching displacement between the secondary positioning carrier and the assembly good product conveyor belt. The helium detection unloading station 32 includes an NG discharge belt 321 and a good product turning mechanism 322 for turning over the material. The helium detection station 331 includes a helium detection top chamber and a helium detection carrier with linear displacement disposed at the bottom of the helium detection top chamber. The material switching displacement mechanism 312 has switching displacement between the secondary positioning carrier and the helium detection carrier, between the helium detection carrier and the NG discharge belt, and between the helium detection carrier and the good product turning mechanism.

[0070] Detailed implementation instructions:

[0071] The material transfer mechanism 312 picks up the material from the assembled good product conveyor belt 282 and transfers it to the secondary positioning carrier 311 for secondary positioning.

[0072] The material switching and displacement mechanism 312 picks up the material on the secondary positioning carrier 311 and transfers it to the helium inspection station 331. The material is placed on the helium inspection carrier, which then linearly moves to the bottom of the helium inspection top chamber. The helium inspection top chamber descends and performs helium inspection. After inspection, the material is reset and removed from the helium inspection carrier. At this time, based on the helium inspection results, the material switching and displacement mechanism 312 performs separate transfers. NG products are placed on the NG discharge belt 321, and good products are placed on the good product flipping mechanism 322. The good product flipping mechanism 322 flips the material and feeds it to the back-end equipment.

[0073] like Figure 6As shown, the explosion-proof valve film-applying device 4 includes a product rotating disk 40 with several product carriers 41, a product loading station 42, a film-applying station 43, and an unloading station 44 arranged sequentially along the rotation direction of the product rotating disk. The product loading station 42 includes a product loading conveyor belt 421 for receiving the product from the good product flipping mechanism 322, and a product transfer mechanism 422 for switching the displacement between the product loading conveyor belt and the product carrier. The film-applying station 43 includes a protective film supply mechanism 431, a transfer and adhesive mechanism 432 for transferring and applying the protective film between the product carrier and the protective film supply mechanism, and a film-applying visual inspection mechanism 433 for film-applying detection. The unloading station 44 includes an NG finished product conveyor belt 441 and a finished product unloading belt 442, and a finished product transfer mechanism 443 for rotating and shifting between the product carrier and the NG finished product conveyor belt and between the product carrier and the NG finished product conveyor belt.

[0074] Specifically, the product feeding conveyor belt 421 receives the products from the good product flipping mechanism 322, and the product transfer mechanism 422 transfers them to the product carrier 41 at the product feeding station 42. At the film application station 43, the protective film supply mechanism 431 supplies film, and the transfer and bonding mechanism 432 picks it up and applies the film to the corresponding position on the product. After the film is applied, the film application visual inspection mechanism 433 performs inspection, and the products are unloaded separately at the unloading station 44. The finished product transfer mechanism 443 places the NG products on the NG finished product conveyor belt 441 for discharge, and places the qualified products on the finished product unloading belt 442 for output.

[0075] like Figure 7 As shown, the pallet stacking device 5 includes a finished product stacking mechanism 51 and a stacking transfer mechanism 52 for shifting and moving between the finished product unloading belt and the finished product stacking mechanism.

[0076] That is, the palletizing and transfer mechanism 52 picks up the qualified finished products discharged from the finished product unloading belt and transfers them to the finished product palletizing mechanism 51 for palletizing operations.

[0077] In one specific embodiment, the busbar conveyor belt 1522 includes a busbar circulation conveyor rail with a plurality of busbar positioning carriers, wherein the busbar positioning carriers are provided with busbar positioning grooves that are similar in shape to the negative busbars.

[0078] This achieves high-precision positioning and feeding of the negative electrode busbar.

[0079] In one specific embodiment, the manifold supply mechanism 120 includes a manifold magazine loading turntable 121 and a manifold transfer unit 122 for switching displacement between the discharge end of the manifold magazine loading turntable and the manifold carrier.

[0080] This satisfies the continuous supply requirements of the negative electrode busbar.

[0081] In one specific embodiment, the disc feeding mechanism 221 includes a disc circulation feeding section, a disc conveying rail with a plurality of disc positioning carriers, and a disc feeding turnover mechanism for switching displacement between the disc circulation feeding section and the disc positioning carriers.

[0082] This enables continuous and reliable material supply to the main body of the cover plate.

[0083] In one specific embodiment, such as Figure 4 As shown, the disc loading station includes a disc visual guidance mechanism 6, which is communicatively connected to the disc loading mechanism and is used for visual guidance of the disc loading mechanism.

[0084] This satisfies the visual guidance requirements for material feeding and ensures reliable and accurate material feeding position for the cover plate body.

[0085] In one specific embodiment, such as Figure 4 As shown, the manifold assembly station includes a manifold secondary positioning and shaping fixture 7 set between the manifold conveyor belt and the assembly loading seat. The manifold loading and transfer mechanism includes a negative pressure pickup part with linear displacement, lifting displacement and rotational displacement. The negative pressure pickup part is provided with at least two manifold negative pressure adsorption ends set at intervals.

[0086] This satisfies the shaping and positional correction requirements before the negative electrode busbar is loaded and assembled, ensuring the reliability of the pre-assembly and guaranteeing the relative positional accuracy of the assembly before welding.

[0087] In one specific embodiment, such as Figure 4 As shown, the assembled product conveyor belt includes an assembly component circulation feeding rail with several assembly component carriers, and the unloading station includes a steering adjustment mechanism 8 set on the transfer path of the assembly component transfer mechanism for adjusting the steering angle of the assembled products.

[0088] The steering adjustment mechanism 8 enables the re-picking of materials placed on the assembly transfer mechanism after steering adjustment, ensuring the positional accuracy of the materials transferred to the assembly carrier.

[0089] In one specific embodiment, such as Figure 5 As shown, the helium detection device is equipped with a re-inspection buffer mechanism 9 located on the displacement path of the material switching displacement mechanism. The re-inspection buffer mechanism includes a re-inspection carrier with linear displacement, and the re-inspection carrier is provided with several re-inspection slots.

[0090] It can provide a re-examination cache, thus ensuring the cache space is protected.

[0091] In one specific embodiment, the explosion-proof valve film application device includes a film application visual guidance mechanism that is communicatively connected to the transfer and application mechanism.

[0092] The film application visual guidance mechanism can share the image acquisition module with the film application visual inspection mechanism 433, thus realizing the integrated needs of visual guidance and post-application inspection.

[0093] The above description demonstrates that the entire assembly process for the negative electrode battery cover plate is designed to meet the requirements, enabling consistent monitoring and recording of production processes, thus making NG (non-conforming) tracking more efficient and rational. The production line is cleverly constructed, ensuring efficient and smooth automated assembly operations. The entire process is automated, with stable and smooth coordination between processes and a compact layout.

[0094] The term "comprising" or any other similar expression is intended to cover non-exclusive inclusion, such that a process, method, article, or apparatus / device that comprises a list of elements includes not only those elements but also other elements not expressly listed, or elements inherent to those processes, methods, articles, or apparatus / devices. The technical solutions of the present invention have been described above in conjunction with the preferred embodiments shown in the accompanying drawings. However, it will be readily understood by those skilled in the art that the scope of protection of the present invention is obviously not limited to these specific embodiments. Without departing from the principles of the present invention, those skilled in the art can make equivalent changes or substitutions to the relevant technical features, and the technical solutions resulting from such changes or substitutions will all fall within the scope of protection of the present invention.

Claims

1. An automated assembly device for a negative electrode battery cover plate, the negative electrode battery cover plate comprising a cover plate body, a negative electrode busbar, and an explosion-proof valve film, wherein the cover plate body is a disc body with an eccentric explosion-proof valve, the negative electrode busbar includes an annular end and a connecting end connected to the annular end, the outer periphery of the annular end has an outer periphery notch, the disc body has a first disc body surface and a second disc body surface, and the negative electrode busbar has a first busbar surface and a second busbar surface. The automated assembly method for the negative electrode battery cover includes the following steps: S1 negative busbar coding and screening: The negative busbar is laser-coded with the first side facing up to form an identification code. After the identification code is effectively identified, it is flipped over to provide a busbar with the first side facing down containing the code. S2 assembly and welding involves sequentially supplying the disk with the second side facing upwards, pre-assembly of the code-containing busbar stacked on the disk, pre-assembly inspection, assembly and welding, welding inspection, internal resistance inspection, and unloading of welded good and welded bad products; the results of welding inspection and internal resistance inspection are associated with the corresponding identification code. S3 helium gas testing: For welded good products, helium gas testing is performed with the second side of the disk facing upwards. After helium gas testing, good products and bad products are unloaded. Good products are flipped over and output. The helium test results are associated with the corresponding identification code. S4 explosion-proof valve film is applied to the eccentric explosion-proof valve on the first side of the disc body of the helium-tested good product after flipping. After the film is applied, the good product and the bad product are unloaded. The application result is associated with the corresponding identification code. S5 tray stacking will transfer and stack the fit products; Its features are: It includes a negative electrode busbar coding and screening device, an assembly and welding device, a helium gas detection device, an explosion-proof valve film application device, a tray stacking device, and an identification code association host. The identification code association host is communicatively connected to the negative electrode busbar coding and screening device, the assembly and welding device, the helium gas detection device, and the explosion-proof valve film application device. The negative electrode busbar coding and screening device includes a rotating disk with several busbar carriers, a busbar loading station, a busbar coding station, a busbar identification station, and a busbar unloading station arranged sequentially along the rotating disk. The busbar loading station is equipped with a busbar supply mechanism. The busbar coding station is equipped with a laser coding mechanism for laser coding on the first surface of the busbar. The busbar identification station includes a barcode scanning and identification mechanism. The busbar unloading station includes an NG turnover mechanism and a flipping conveyor mechanism. The flipping conveyor mechanism includes a flipping section for flipping the negative electrode busbar, a busbar conveyor belt for outputting the negative electrode busbar, and a busbar turnover section for switching displacement between the flipping section and the busbar conveyor belt. The assembly and welding device includes an assembly rotary table with several sets of loading seats, a disc loading station, a manifold assembly station, an assembly inspection station, a welding station, a post-weld inspection station, an internal resistance inspection station, and an unloading station arranged sequentially along the rotation direction of the assembly rotary table. The disc loading station includes a disc supply mechanism and a disc loading mechanism for switching displacement between the disc supply mechanism and the loading seats. The manifold assembly station includes a manifold loading transfer mechanism for switching displacement between the discharge end of the manifold conveyor belt and the loading seats. The assembly inspection station... The station includes an assembly inspection mechanism for detecting the relative position of the negative electrode busbar and the disk body; the welding station includes a laser welding mechanism and a welding locking part with lifting displacement for pressing the negative electrode busbar; the post-weld inspection station includes a welding vision inspection mechanism for welding assembly inspection; the internal resistance detection station includes an internal resistance detection mechanism for performing internal resistance detection; and the unloading station includes an NG conveyor belt, an assembled good product conveyor belt, and an assembly transfer mechanism for material turnover between the assembly loading seat and the NG conveyor belt and between the assembly loading seat and the assembled good product conveyor belt. The helium detection device includes a helium detection loading station, a helium detection unloading station, and a helium detection mechanism disposed between the helium detection loading station and the helium detection unloading station. The helium detection mechanism includes at least one helium detection station and a material switching displacement mechanism for switching material stations. The helium detection loading station includes a secondary positioning carrier and a material transfer mechanism for switching displacement between the secondary positioning carrier and the assembled good product conveyor belt. The helium detection unloading station includes an NG discharge belt and a good product turning mechanism for turning over the material. The helium detection station includes a helium detection top chamber and a helium detection carrier with linear displacement disposed at the bottom of the helium detection top chamber. The material switching displacement mechanism has switching displacement between the secondary positioning carrier and the helium detection carrier, between the helium detection carrier and the NG discharge belt, and between the helium detection carrier and the good product turning mechanism. The explosion-proof valve film-applying device includes a product rotating disk with several product carriers, a product loading station, a film-applying station, and an unloading station arranged sequentially along the rotation direction of the product rotating disk. The product loading station includes a product loading conveyor belt for receiving the product discharged from the good product flipping mechanism and a product transfer mechanism for switching displacement between the product loading conveyor belt and the product carrier. The film-applying station includes a protective film supply mechanism, a transfer and adhesive mechanism for transferring and applying the protective film between the product carrier and the protective film supply mechanism, and a film-applying visual inspection mechanism for film-applying detection. The unloading station includes an NG finished product conveyor belt and a finished product unloading belt, and a finished product transfer mechanism for rotating displacement between the product carrier and the NG finished product conveyor belt and between the product carrier and the NG finished product conveyor belt. The palletizing and stacking device includes a finished product stacking mechanism and a stacking transfer mechanism for shifting and moving between the finished product unloading belt and the finished product stacking mechanism.

2. The automated assembly equipment for a negative electrode battery cover plate according to claim 1, characterized in that: The busbar conveyor belt includes a busbar circulation conveyor rail with several busbar positioning carriers, and the busbar positioning carriers are provided with busbar positioning grooves that are similar in shape to the negative busbars.

3. The automated assembly equipment for a negative electrode battery cover plate according to claim 1, characterized in that: The manifold supply mechanism includes a manifold magazine feeding turntable and a manifold transfer unit for switching displacement between the discharge end of the manifold magazine feeding turntable and the manifold carrier.

4. The automated assembly equipment for a negative electrode battery cover plate according to claim 1, characterized in that: The disc-shaped supply mechanism includes a disc circulation supply unit, a disc conveying rail with several disc positioning carriers, and a disc supply turnover mechanism for switching displacement between the disc circulation supply unit and the disc positioning carriers.

5. An automated assembly device for a negative electrode battery cover plate according to claim 1, characterized in that: The disc loading station includes a disc visual guidance mechanism that is communicatively connected to the disc loading mechanism and is used to provide visual guidance for loading the disc loading mechanism.

6. The automated assembly equipment for a negative electrode battery cover plate according to claim 1, characterized in that: The manifold assembly station includes a secondary positioning and shaping fixture for the manifold, which is located between the manifold conveyor belt and the loading seat. The manifold loading and transfer mechanism includes a negative pressure pickup part with linear displacement, lifting displacement and rotational displacement. The negative pressure pickup part is provided with at least two manifold negative pressure adsorption ends that are spaced apart from each other.

7. An automated assembly device for a negative electrode battery cover plate according to claim 1, characterized in that: The assembled product conveyor belt includes an assembly component circulation feed rail with several assembly component carriers, and the unloading station includes a steering adjustment mechanism disposed on the transfer path of the assembly component transfer mechanism for adjusting the steering angle of the assembled products.

8. An automated assembly device for a negative electrode battery cover plate according to claim 1, characterized in that: The helium detection device is equipped with a re-inspection buffer mechanism located on the displacement path of the material switching displacement mechanism. The re-inspection buffer mechanism includes a re-inspection carrier with linear displacement, and the re-inspection carrier is provided with a plurality of re-inspection slots.

9. An automated assembly device for a negative electrode battery cover plate according to claim 1, characterized in that: The explosion-proof valve film application device includes a film application visual guidance mechanism that is communicatively connected to the transfer and adhesive mechanism.

Images