Automatic assembly process and equipment for negative electrode battery cover plate

Abstract

The invention discloses an automatic assembly process of a cathode battery cover plate. The automatic assembly process comprises the steps of code printing and screening of a cathode collector plate, assembly and welding, helium detection, film pasting of an anti-explosion valve, and plate loading and stacking. The automatic assembling equipment comprises a negative electrode bus disc code printing and screening device, an assembling and welding device, a helium detection device, an anti-explosion valve film pasting device, a disc loading and stacking device and an identification code identification association host. And the identification code identification association host is in communication connection with the negative electrode collector plate coding and screening device, the assembling and welding device, the helium detection device and the anti-explosion valve film pasting device. According to the invention, the whole assembly process requirement of the negative electrode battery cover plate is met, the code consistent monitoring and recording production is realized, and the NG tracking is more efficient and reasonable. An equipment production line is skillfully constructed, and automatic assembly production operation is efficient and smooth. Full-process automatic operation of equipment is achieved according to the process, working procedure matching is stable and smooth, and layout is compact.

Description

Technical Field

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

[0002] The power battery system (power battery PACK, battery pack) is the core energy source for providing driving power for new energy vehicles and is one of the most critical components of new energy vehicles. The power battery system is mainly composed of battery modules, electrical systems, thermal management systems, shells, BMS and other components. The battery modules, electrical systems, thermal management systems and BMS are packaged in the shell to form the main body of the power battery system.

[0003] Power batteries generally include cylindrical batteries and blade batteries. Regardless of whether they are cylindrical batteries or blade batteries, they all have a battery cover with electrodes. The battery cover assembly includes the assembly of the cover and the busbar, welding of the cover and the busbar, welding inspection, internal resistance inspection, helium inspection, film pasting and other operations.

[0004] Currently, there is a negative battery cover, which is formed by assembling and welding a cover body and a negative busbar. The cover body is a disc body with an eccentric explosion-proof valve. The negative busbar includes a circular end and a connecting end connected to the circular end. The outer periphery of the circular end has an outer peripheral notch.

[0005] In the assembly and production of negative battery cover plates, welding operations need to be performed between the cover plate body and the negative busbar. After welding, corresponding welding inspections, internal resistance inspections, and helium inspections are required. After qualified inspections, the eccentric explosion-proof valve needs to be filmed. In traditional processes, normal welding, welding inspections, internal resistance inspections, helium inspections, and filming are generally performed in sequence. During the production process, a large number of NG products are involved. Such NG products will be discharged with the various stages of the process. The yield rate of negative battery cover plates is currently relatively low, so a large number of NG products will be generated. There are many categories of such NG products, such as: relative position deviation before welding, scrap after welding, internal resistance classification differences, helium inspection classification differences, filming NG, etc. It is difficult to achieve product tracking in traditional processes. Separate NG discharge is required after each process to achieve accurate NG product classification. However, it is difficult to achieve a reasonable layout of the equipment for the supporting process, resulting in low assembly efficiency. Summary of the invention

[0006] The purpose of the present invention is to solve the deficiencies of the above-mentioned prior art. In view of the problem that it is difficult to achieve product production tracking with traditional processes, resulting in a long assembly production cycle and difficulty in rationally laying out and constructing equipment, an automated assembly process and equipment for negative battery cover plates are proposed.

[0007] In order to achieve the above object, the technical solution adopted by the present invention is: An automated assembly process for a negative battery cover, the negative battery cover comprising a cover body, a negative busbar, and an explosion-proof valve film, the cover body being a disc body with an eccentric explosion-proof valve, the negative busbar comprising a circular end and a connecting end connected to the circular end, the outer periphery of the circular end having an outer peripheral notch, the circular body comprising a first disc body surface and a second disc body surface, and the negative busbar comprising a first busbar surface and a second busbar surface; The automated assembly process comprises the following steps: S1 negative busbar coding screening, the first side of the negative busbar is laser coded upward to form an identification code mark, and after the identification code is effectively identified, it is turned over to provide a busbar with a code on the first side facing the bottom; S2 assembly welding, sequentially performing the feeding of the disc body with the second side of the disc body facing upward, pre-assembly of the code busbar stacked on the disc body, pre-assembly inspection, assembly welding, welding inspection, internal resistance inspection, unloading of good welding products and NG welding products; the results of welding inspection and internal resistance inspection are associated with the corresponding identification code labels; S3 Helium detection: welding good products are kept with the second side of the disc facing upward for helium detection, and after the helium detection, the good products and NG products are unloaded. The good products are turned over and output, and the helium detection results are associated with the corresponding identification code. S4 explosion-proof valve film pasting, after turning over and pasting the explosion-proof valve film on the eccentric explosion-proof valve on the first side of the disc body of the qualified product after helium inspection, the qualified products and the NG products are unloaded after the pasting inspection, and the pasting results are associated with the corresponding identification code mark; S5 palletizing and stacking, transfer and palletizing of bonded good products.

[0008] The present invention also proposes an automated assembly device for a negative battery cover plate, which is used for the automated assembly process of the negative battery cover plate according to claim 1; It includes a negative busbar coding and screening device, an assembly welding device, a helium detection device, an explosion-proof valve film sticking device, a tray stacking device, and an identification code associated host, and the identification code associated host is respectively connected to the negative busbar coding and screening device, the assembly welding device, the helium detection device, and the explosion-proof valve film sticking device; The negative busbar coding screening device comprises a rotating disk with a plurality of busbar carriers, a busbar loading station, a busbar coding station, a busbar identification station, and a busbar unloading station sequentially arranged along the rotating disk, the busbar loading station is provided with a busbar supply mechanism, the busbar coding station is provided with a laser coding mechanism for laser coding on the first surface of the busbar, the busbar identification station comprises a code scanning and identification mechanism, the busbar unloading station comprises an NG turnover mechanism and a flipping and conveying mechanism, the flipping and conveying mechanism comprises a flipping portion for flipping the negative busbar, a busbar conveyor belt for outputting the negative busbar, and a busbar turnover portion for switching displacement between the flipping portion and the busbar conveyor belt; The assembly welding device comprises an assembly rotating disk with a plurality of group loading seats, a disc body loading station, a convergence plate assembly station, an assembly inspection station, a welding station, a post-weld inspection station, an internal resistance inspection station, and an unloading station arranged in sequence along the rotation direction of the assembly rotating disk; the disc body loading station comprises a disc body supply mechanism and a disc body loading mechanism for switching displacement between the disc body supply mechanism and the group loading seat; the convergence plate assembly station comprises a convergence plate loading transfer mechanism for switching displacement between the discharge end of the convergence plate conveyor belt and the group loading seat; the assembly inspection station The said position comprises an assembly detection mechanism for detecting the relative position between the negative busbar and the disc body, the said welding station comprises a laser welding mechanism, a welding locking part with lifting displacement for crimping the said negative busbar, the said post-weld detection station comprises a welding visual detection mechanism for welding assembly detection, the said internal resistance detection station comprises an internal resistance detection mechanism for internal resistance detection, the said unloading station comprises an NG conveyor belt, an assembly good product conveyor belt, and an assembly parts transfer mechanism for material turnover between the said assembly loading seat and the said NG conveyor belt and between the said assembly loading seat and the said assembly good product conveyor belt; The helium detection device comprises a helium detection loading station, a helium detection unloading station, and a helium detection mechanism arranged between the helium detection loading station and the helium detection unloading station, the helium detection mechanism comprises at least one helium detection station and a material switching displacement mechanism for switching material stations, the helium detection loading station comprises a secondary positioning carrier, a material transfer mechanism for switching displacement between the secondary positioning carrier and the assembly good product conveyor belt, the helium detection unloading station comprises an NG discharge belt and a good product turning mechanism for turning over materials, the helium detection station comprises a helium detection top cabin and a helium detection carrier with linear displacement arranged at the bottom of the helium detection top cabin, 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 sticking device includes a product rotating disk with a plurality of product carriers, a product loading station, a film sticking station, and a discharging station arranged in sequence along the rotation direction of the product rotating disk, the product loading station includes a product loading conveyor belt for receiving the product discharged by the good product turning mechanism, and a product transfer mechanism for switching displacement between the product loading conveyor belt and the product carrier, the film sticking station includes a protective film supply mechanism, a transfer and pasting mechanism for transferring and pasting the protective film between the product carrier and the protective film supply mechanism, and a film sticking visual inspection mechanism for film sticking inspection, the discharging station includes an NG finished product conveyor belt and a finished product discharging belt, and a finished product transfer mechanism for turnover 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 comprises a finished product stacking mechanism and a stacking transfer mechanism for rotationally displacing between the finished product unloading belt and the finished product stacking mechanism.

[0009] Preferably, the busbar conveyor belt comprises a busbar circulating conveyor rail having a plurality of busbar positioning seats, and the busbar positioning seats are provided with busbar positioning grooves which are arranged in the same shape as the negative busbar.

[0010] Preferably, the convergence tray supply mechanism comprises a convergence tray clip loading turntable and a convergence tray transfer portion for switching displacement between a discharge end of the convergence tray clip loading turntable and the convergence tray carrier.

[0011] Preferably, the disc body supply mechanism includes a material tray circulation supply unit, a disc body conveying rail with a plurality of disc body positioning carriers, and a disc body supply turnover mechanism for displacement switching between the material tray circulation supply unit and the disc body positioning carriers.

[0012] Preferably, the disc loading station comprises a disc visual guidance mechanism which is communicatively connected with the disc loading mechanism and is used for visually guiding the loading of the disc loading mechanism.

[0013] Preferably, the convergence plate assembly station includes a convergence plate secondary positioning and shaping tooling arranged between the convergence plate conveyor belt and the assembly loading seat, and the convergence plate loading and transferring mechanism includes a negative pressure picking part with linear displacement, lifting displacement, and rotational displacement, and the negative pressure picking part is provided with at least two convergence plate negative pressure adsorption ends arranged at intervals.

[0014] Preferably, the good assembly product conveyor belt comprises an assembly component circulating supply rail having a plurality of assembly component carriers, and the unloading station comprises a steering adjustment mechanism disposed on a transfer path of the assembly component transfer mechanism for adjusting a steering angle of good assembly products.

[0015] 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 comprises a re-inspection carrier with linear displacement, and the re-inspection carrier is provided with a plurality of re-inspection slots.

[0016] Preferably, the explosion-proof valve film sticking device includes a film sticking visual guiding mechanism communicatively connected with the transfer and sticking mechanism.

[0017] The beneficial effects of the present invention are mainly reflected in: 1. Meet the full process requirements of the negative battery cover assembly process, realize the consistent monitoring and recording of production by coding, and make NG tracking more efficient and reasonable.

[0018] 2. The equipment production line is cleverly constructed, and the automated assembly production runs efficiently and smoothly.

[0019] 3. The whole process of equipment is automatically operated according to the process, the process coordination is stable and smooth, and the layout is compact. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] Other features, objects and advantages of the present application will become more apparent by reading the detailed description of non-limiting embodiments made with reference to the following drawings: Figure 1 It is a process flow chart of the automated assembly process of the negative battery cover plate of the present invention.

[0021] Figure 2 It is a schematic diagram of the overall structure of the automated assembly equipment for the negative battery cover of the present invention.

[0022] Figure 3 It is a structural schematic diagram of the negative busbar coding and screening device in the present invention.

[0023] Figure 4 It is a structural schematic diagram of the assembly welding device in the present invention.

[0024] Figure 5 It is a structural schematic diagram of the helium detection device in the present invention.

[0025] Figure 6 It is a structural schematic diagram of the explosion-proof valve film sticking device in the present invention.

[0026] Figure 7 It is a structural schematic diagram of the tray loading and stacking device in the present invention.

[0027] Figure 8 It is a schematic diagram of the assembly structure of the negative electrode battery cover plate of the present invention. DETAILED DESCRIPTION

[0028] In order to make the purpose, technical solution and advantages of the embodiments of the present invention clearer, the technical solution in the embodiments of the present invention will be clearly and completely described below in conjunction with the drawings in the embodiments of the present invention. Obviously, the described embodiments are part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0029] The present application will be further described in detail below in conjunction with the accompanying drawings and embodiments. It is to be understood that the specific embodiments described herein are only used to explain the relevant inventions, rather than to limit the inventions. It should also be noted that, for ease of description, only the parts related to the relevant inventions are shown in the accompanying drawings. It should be noted that, in the absence of conflict, the embodiments in the present application and the features in the embodiments can be combined with each other.

[0030] The present invention provides an automated assembly process for a negative battery cover, such as Figure 8 As shown, the negative battery cover includes a cover body 100, a negative busbar 200, and an explosion-proof valve film 300. The cover body 100 is a disc body with an eccentric explosion-proof valve. The negative busbar 200 includes a circular end 400 and a connecting end 500 connected to the circular end. The outer periphery of the circular end has an outer peripheral notch 600. The disc body has a first disc body surface and a second disc body surface. The negative busbar has a first busbar surface and a second busbar surface.

[0031] like Figure 1 As shown, the automated assembly process includes the following steps: Negative busbar coding screening: the first side of the negative busbar is facing upwards and laser coded to form an identification code mark. After the identification code is effectively identified, it is turned over to provide a busbar with a code on the first side facing the bottom; Assembly welding, sequentially performing the feeding of a disc body with the second side of the disc body facing upward, pre-assembly of the code busbar stacked on the disc body, pre-assembly inspection, assembly welding, welding inspection, internal resistance inspection, unloading of good welding products and NG welding products; the results of welding inspection and internal resistance inspection are associated with the corresponding identification code labels; Helium detection: welding good products are kept with the second side of the disc facing upwards for helium detection. After the helium detection, the good products and NG products are unloaded. The good products are turned over and output. The helium detection results are associated with the corresponding identification code. Explosion-proof valve film pasting: after turning over and pasting the explosion-proof valve film on the eccentric explosion-proof valve on the first side of the disc body of the qualified product after helium inspection, the qualified products and NG products are unloaded after the pasting inspection, and the pasting results are associated with the corresponding identification code mark; The products are palletized and stacked, and the good products are transferred and palletized.

[0032] Specific operation process: When welding the cover body 100 and the negative busbar 200 , the first surface of the negative busbar 200 is required to be welded to the second surface of the disc body. After welding, the explosion-proof valve film 300 is pasted on the first surface of the cover body 100 .

[0033] In the traditional process, the first side of the negative busbar 200 is transported toward the bottom, assembled with the second side of the disc body toward the top, and then welded. The welded product is turned over and the explosion-proof valve film 300 is affixed. Since the welded product needs to undergo multiple tests, such as welding quality, internal resistance, helium inspection, etc., each step of NG unloading is very cumbersome, the production line will be relatively large, and it is not convenient to collect NG in a centralized manner. Each NG position needs to be collected and classified independently. Transportation and recycling are also cumbersome. It is difficult to meet quality control requirements.

[0034] In the present invention, the negative busbar coding screening is first performed, that is, the first side of the negative busbar is laser coded upward to form an identification code mark 700, and after the identification code is effectively identified, it is turned over to provide a busbar with a code on the first side facing the bottom. In this way, a laser identification code is formed on the side exposed later, which meets the NG information identification requirements on the one hand, and the code scanning and tracing requirements on the other hand.

[0035] Then the assembly welding is carried out, which includes supplying the disc body with the second side facing upward, pre-assembly of the coded busbar stacked on the disc body, pre-assembly inspection, assembly welding, welding inspection, internal resistance inspection, unloading of good welding products and NG welding products; the results of welding inspection and internal resistance inspection are associated with the corresponding identification code labels.

[0036] That is, pre-assembly inspection NG, welding inspection NG, and internal resistance inspection NG are all carried out in the same NG unloading, and the NG materials can be collected and the NG category can be scanned and identified at the back end, which makes it easy to operate and classify NG.

[0037] Through the identification code label, detailed classification can be achieved. For example, for products that fail pre-assembly inspection, the cover plate body 100 and the negative busbar 200 are separated and can therefore be recycled. However, there are differentiated classifications for welding inspection and internal resistance inspection, such as setting a primary classification threshold, a secondary classification threshold, and a scrap threshold for internal resistance. This allows the classification information to be associated with the identification code label, allowing for richer classifications at a later stage, making recycling easier and improving the utilization rate of NG products.

[0038] The qualified welded products are tested for helium. The qualified welded products are tested for helium with the second side of the disc facing upwards. After the helium test, the qualified welded products and the NG welded products are unloaded. The qualified welded products are turned over and output. The helium test results are associated with the corresponding identification code. This is achieved using an independent line.

[0039] For explosion-proof valve film, when all the tests are qualified, after turning over and covering the eccentric explosion-proof valve on the first side of the disc body of the qualified helium-tested product, the explosion-proof valve film is unloaded after the fitting test, and the fitting results are associated with the corresponding identification code labels; the detection information of the explosion-proof valve film can be associated, and 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 the number of film pasting times. When the number of film pasting times exceeds the standard and fails, it can provide information parameter reference for equipment adjustment.

[0040] Finally, palletizing is performed to transfer and palletize the bonded good products. Palletizing and palletizing belong to the existing technology and will not be described in detail here.

[0041] Due to the relevant innovative optimization of the process of negative battery cover plates, in order to meet the full automation operation of the process and carry out the production line equipment layout design, an automated assembly equipment for negative battery cover plates was proposed.

[0042] like Figures 2 to 8 As shown, it includes a negative busbar coding and screening device 1, an assembly welding device 2, a helium detection device 3, an explosion-proof valve film device 4, a tray stacking device 5, and an identification code label associated host. The identification code label associated host is respectively connected to the negative busbar coding and screening device, the assembly welding device, the helium detection device, and the explosion-proof valve film device; the illustration of the identification code label associated host is omitted in the accompanying drawings, and it is connected to each device in a communication manner, which can realize data collection and data association. The communication method of establishing data interaction belongs to the existing technology and will not be repeated here.

[0043] In this case, if Figure 3As shown, the negative busbar coding and screening device includes a rotating disk 10 with a plurality of busbar carriers 11, a busbar loading station 12, a busbar coding station 13, a busbar identification station 14, and a busbar unloading station 15 which are arranged in sequence along the rotating disk, the busbar loading station is provided with a busbar supply mechanism 120, the busbar coding station is provided with a laser coding mechanism 130 for laser coding on the first side of the busbar, the busbar identification station includes a code scanning and identification mechanism 140, the busbar unloading station includes an NG turnover mechanism 151 and a flipping and conveying mechanism 152, and the flipping and conveying mechanism includes a flipping portion 1521 for flipping the negative busbar, a busbar conveyor belt 1522 for outputting the negative busbar, and a busbar turnover portion 1523 for switching displacement between the flipping portion and the busbar conveyor belt.

[0044] Specifically, the negative electrode busbar is first coded and screened for feeding, and the busbar feeding mechanism 120 supplies the busbar. The first side facing the top is coded by the laser coding mechanism 130 and then switches to the code scanning and recognition mechanism 140 with the rotating disk 10. After code scanning and recognition, the materials are classified and unloaded. NG products are directly discharged and unloaded by the NG turnover mechanism 151, and the good products are turned over by the turning part 1521, picked up by the busbar turnover part 1523 and placed on the busbar conveyor belt 1522, and the busbar conveyor belt 1522 supplies materials to the next process equipment.

[0045] like Figure 4 As shown, the assembly welding device 2 includes a rotating disk 20 with a plurality of loading seats 21, a disc loading station 22, a collector plate 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, which are arranged in sequence along the rotation direction of the assembly rotating disk.

[0046] The disc body loading station 22 includes a disc body supply mechanism 221 and a disc body loading mechanism 222 for switching displacement between the disc body supply mechanism and the assembly loading seat. The busbar assembly station 23 includes a busbar loading transfer mechanism 230 for switching displacement between the discharge end of the busbar 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 busbar and the disc body. The welding station includes a laser welding mechanism 251 and a welding locking part 252 with lifting displacement for crimping the negative busbar. The post-weld inspection station 26 includes a welding visual inspection mechanism 260 for welding assembly inspection. The internal resistance inspection station 27 includes an internal resistance inspection mechanism 270 for internal resistance inspection. The unloading station includes an NG conveyor belt 281, an assembly good product conveyor belt 282, and an assembly parts transfer mechanism 283 for material turnover between the assembly loading seat and the NG conveyor belt and between the assembly loading seat and the assembly good product conveyor belt.

[0047] Specifically, the disc body supply mechanism 221 supplies the cover plate body, the disc body loading mechanism 222 picks up the cover plate body and mounts it on the assembly loading seat 21, and switches the workstation to the busbar assembly station 23. At this time, the busbar loading and transfer mechanism 230 picks up the turned-over negative busbar supplied by the negative busbar coding and screening device and assembles it and places it on the assembly loading seat 21. Its connection end 500 is partially overlapped on the cover plate body to achieve pre-assembly, and then enters the assembly inspection station. The assembly inspection mechanism 240 performs assembly relative position inspection. If the inspection is qualified, it is welded and assembled by the laser welding mechanism 251. After welding and assembly, it is sequentially inspected by the welding visual inspection mechanism 260 and the internal resistance inspection mechanism 270. Finally, it is classified according to the inspection results at the unloading station 28, and unloaded by the assembly transfer mechanism 283, and unloaded on the NG conveyor belt 281 or the assembly good product conveyor belt 282 respectively.

[0048] 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 arranged 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, 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 cabin and a helium detection carrier with linear displacement arranged at the bottom of the helium detection top cabin, and 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.

[0049] Specific implementation instructions: The material transfer mechanism 312 picks up the materials from the good assembly conveyor belt 282 and transfers them to the secondary positioning carrier 311 for secondary positioning.

[0050] The material switching displacement mechanism 312 picks up the material on the secondary positioning carrier 311 and transfers it to the helium inspection station 331, and places it on its helium inspection carrier. The helium inspection carrier linearly displaces to the bottom of the helium inspection top cabin, and the helium inspection top cabin goes down to close the cabin for helium inspection. After the inspection, the helium inspection carrier is reset and moved out. At this time, according to the helium inspection results, the material switching displacement mechanism 312 performs separate transfers, and the NG products are placed on the NG discharge belt 321, and the good products are placed on the good product turning mechanism 322. The good product turning mechanism 322 turns them over and feeds them to the back-end equipment.

[0051] like Figure 6As shown, the explosion-proof valve film sticking device 4 includes a product rotating disk 40 with a plurality of product carriers 41, a product loading station 42, a film sticking station 43, and a discharge station 44 which are arranged in sequence along the rotation direction of the product rotating disk, the product loading station 42 includes a product loading conveyor belt 421 for receiving the discharge of the good product turning mechanism 322, and a product transfer mechanism 422 for switching and displacing between the product loading conveyor belt and the product carrier, the film sticking station 43 includes a protective film supply mechanism 431, a transfer and pasting mechanism 432 for transferring and pasting the protective film between the product carrier and the protective film supply mechanism, and a film sticking visual inspection mechanism 433 for film sticking inspection, and the discharge station 44 includes an NG finished product conveyor belt 441 and a finished product discharge belt 442, and a finished product transfer mechanism 443 for turnover and displacement between the product carrier and the NG finished product conveyor belt and between the product carrier and the NG finished product conveyor belt.

[0052] Specifically, the product loading conveyor belt 421 receives the products from the good product turning mechanism 322, and the product transfer mechanism 422 transfers them to the product carrier 41 of the product loading station 42. At the film laminating station 43, the protective film supply mechanism 431 supplies the film, and the transfer and pasting mechanism 432 picks up the film and then laminates the film at the corresponding position on the product. After laminating, the film laminating 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.

[0053] like Figure 7 As shown, the palletizing device 5 includes a finished product stacking mechanism 51 and a stacking transfer mechanism 52 for rotational displacement between the finished product unloading belt and the finished product stacking mechanism.

[0054] That is, the palletizing 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 operation.

[0055] In a specific embodiment, the busbar conveyor belt 1522 includes a busbar circulating conveyor rail having a plurality of busbar positioning seats, and the busbar positioning seats are provided with busbar positioning grooves that are arranged in the same shape as the negative busbar.

[0056] In this way, high-precision position limiting feeding of the negative electrode busbar is achieved.

[0057] In a specific embodiment, the convergence tray supply mechanism 120 includes a convergence tray clip loading turntable 121 and a convergence tray transfer portion 122 for switching displacement between the discharge end of the convergence tray clip loading turntable and the convergence tray carrier.

[0058] This meets the continuous supply requirements of the negative busbar.

[0059] In a specific embodiment, the disc supply mechanism 221 includes a material tray circulation supply unit, a disc conveying rail with a plurality of disc positioning carriers, and a disc supply turnover mechanism for shifting and switching between the material tray circulation supply unit and the disc positioning carriers.

[0060] That is, continuous and positionally reliable material supply to the cover plate body can be achieved.

[0061] In a specific embodiment, Figure 4 As shown, the disc loading station includes a disc visual guidance mechanism 6 which is communicatively connected with the disc loading mechanism and is used for visually guiding the loading of the disc loading mechanism.

[0062] This meets the requirements of visually guided loading and ensures the reliable loading position accuracy of the cover body.

[0063] In a specific embodiment, Figure 4 As shown, the busbar assembly station includes a busbar secondary positioning and shaping tool 7 arranged between the busbar conveyor belt and the assembly loading seat, and the busbar loading and transferring mechanism includes a negative pressure picking part with linear displacement, lifting displacement, and rotational displacement, and the negative pressure picking part is provided with at least two busbar negative pressure adsorption ends arranged at intervals.

[0064] In this way, the shaping and position correction of the negative busbar before loading and assembly are satisfied, the reliability of pre-assembly is ensured, and the relative position of assembly before welding is guaranteed.

[0065] In a specific embodiment, Figure 4 As shown, the good assembly product conveyor belt includes an assembly component circulating supply rail with a plurality of assembly component carriers, and the unloading station includes a steering adjustment mechanism 8 arranged on the transfer path of the assembly component transfer mechanism for adjusting the steering angle of the good assembly products.

[0066] The steering adjustment mechanism 8 can realize the picking up of materials placed on the assembly transfer mechanism after steering adjustment, thereby ensuring the position accuracy of the materials transferred to the assembly carrier.

[0067] In a specific embodiment, Figure 5 As shown, the helium detection device is provided 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 a plurality of re-inspection loading slots are provided on the re-inspection carrier.

[0068] A recheck cache can be provided to ensure cache positions.

[0069] In a specific embodiment, the explosion-proof valve film sticking device includes a film sticking visual guidance mechanism that is communicatively connected to the transfer and sticking mechanism.

[0070] The film pasting visual guidance mechanism can share the image acquisition module with the film pasting visual inspection mechanism 433, thus realizing the comprehensive needs of visual guidance and post-film pasting inspection.

[0071] From the above description, it can be found that the full process requirements of the negative battery cover assembly are met, and the consistent monitoring and recording of the production by coding is realized, making NG tracking more efficient and reasonable. The equipment production line is cleverly constructed, and the automated assembly production runs efficiently and smoothly. According to the process, the full process of the equipment is automatically operated, the process coordination is stable and smooth, and the layout is compact.

[0072] The term "comprise" or any other similar term is intended to cover non-exclusive inclusion, such that a process, method, article, or apparatus / device that includes a list of elements includes not only those elements but also other elements not expressly listed, or also includes elements inherent to such process, method, article, or apparatus / device.

[0073] So far, the technical solutions of the present invention have been described in conjunction with the preferred embodiments shown in the accompanying drawings. However, it is easy for those skilled in the art to understand that the protection scope of the present invention is obviously not limited to these specific embodiments. Without departing from the principle of the present invention, those skilled in the art can make equivalent changes or substitutions to the relevant technical features, and the technical solutions after these changes or substitutions will fall within the protection scope of the present invention.

Claims

1. An automated assembly process for a negative battery cover, wherein the negative battery cover comprises a cover body, a negative busbar, and an explosion-proof valve film, wherein the cover body is a disc body with an eccentric explosion-proof valve, the negative busbar comprises a circular end and a connecting end connected to the circular end, the outer periphery of the circular end comprises an outer peripheral notch, the circular body comprises a first disc body surface and a second disc body surface, and the negative busbar comprises a first busbar surface and a second busbar surface; Features The automated assembly process comprises the following steps: S1 negative busbar coding screening, the first side of the negative busbar is laser coded upward to form an identification code mark, and after the identification code is effectively identified, it is turned over to provide a busbar with a code on the first side facing the bottom; S2 assembly welding, sequentially performing the feeding of the disc body with the second side of the disc body facing upward, pre-assembly of the code busbar stacked on the disc body, pre-assembly inspection, assembly welding, welding inspection, internal resistance inspection, unloading of good welding products and NG welding products; the results of welding inspection and internal resistance inspection are associated with the corresponding identification code labels; S3 Helium detection: welding good products are kept with the second side of the disc facing upward for helium detection, and after the helium detection, the good products and NG products are unloaded. The good products are turned over and output, and the helium detection results are associated with the corresponding identification code. S4 explosion-proof valve film pasting, after turning over and pasting the explosion-proof valve film on the eccentric explosion-proof valve on the first side of the disc body of the qualified product after helium inspection, the qualified products and the NG products are unloaded after the pasting inspection, and the pasting results are associated with the corresponding identification code mark; S5 palletizing and stacking, transfer and palletizing of bonded good products.

2. An automated assembly device for negative battery cover plates, used for the automated assembly process of the negative battery cover plates according to claim 1, characterized in that: It includes a negative busbar coding and screening device, an assembly welding device, a helium detection device, an explosion-proof valve film sticking device, a tray stacking device, and an identification code associated host, and the identification code associated host is respectively connected to the negative busbar coding and screening device, the assembly welding device, the helium detection device, and the explosion-proof valve film sticking device; The negative busbar coding screening device comprises a rotating disk with a plurality of busbar carriers, a busbar loading station, a busbar coding station, a busbar identification station, and a busbar unloading station sequentially arranged along the rotating disk, the busbar loading station is provided with a busbar supply mechanism, the busbar coding station is provided with a laser coding mechanism for laser coding on the first surface of the busbar, the busbar identification station comprises a code scanning and identification mechanism, the busbar unloading station comprises an NG turnover mechanism and a flipping and conveying mechanism, the flipping and conveying mechanism comprises a flipping portion for flipping the negative busbar, a busbar conveyor belt for outputting the negative busbar, and a busbar turnover portion for switching displacement between the flipping portion and the busbar conveyor belt; The assembly welding device comprises an assembly rotating disk with a plurality of group loading seats, a disc body loading station, a convergence plate assembly station, an assembly inspection station, a welding station, a post-weld inspection station, an internal resistance inspection station, and an unloading station arranged in sequence along the rotation direction of the assembly rotating disk; the disc body loading station comprises a disc body supply mechanism and a disc body loading mechanism for switching displacement between the disc body supply mechanism and the group loading seat; the convergence plate assembly station comprises a convergence plate loading transfer mechanism for switching displacement between the discharge end of the convergence plate conveyor belt and the group loading seat; the assembly inspection station The said position comprises an assembly detection mechanism for detecting the relative position between the negative busbar and the disc body, the said welding station comprises a laser welding mechanism, a welding locking part with lifting displacement for crimping the said negative busbar, the said post-weld detection station comprises a welding visual detection mechanism for welding assembly detection, the said internal resistance detection station comprises an internal resistance detection mechanism for internal resistance detection, the said unloading station comprises an NG conveyor belt, an assembly good product conveyor belt, and an assembly parts transfer mechanism for material turnover between the said assembly loading seat and the said NG conveyor belt and between the said assembly loading seat and the said assembly good product conveyor belt; The helium detection device comprises a helium detection loading station, a helium detection unloading station, and a helium detection mechanism arranged between the helium detection loading station and the helium detection unloading station, the helium detection mechanism comprises at least one helium detection station and a material switching displacement mechanism for switching material stations, the helium detection loading station comprises a secondary positioning carrier, a material transfer mechanism for switching displacement between the secondary positioning carrier and the assembly good product conveyor belt, the helium detection unloading station comprises an NG discharge belt and a good product turning mechanism for turning over materials, the helium detection station comprises a helium detection top cabin and a helium detection carrier with linear displacement arranged at the bottom of the helium detection top cabin, 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 sticking device includes a product rotating disk with a plurality of product carriers, a product loading station, a film sticking station, and a discharging station arranged in sequence along the rotation direction of the product rotating disk, the product loading station includes a product loading conveyor belt for receiving the product discharged by the good product turning mechanism, and a product transfer mechanism for switching displacement between the product loading conveyor belt and the product carrier, the film sticking station includes a protective film supply mechanism, a transfer and pasting mechanism for transferring and pasting the protective film between the product carrier and the protective film supply mechanism, and a film sticking visual inspection mechanism for film sticking inspection, the discharging station includes an NG finished product conveyor belt and a finished product discharging belt, and a finished product transfer mechanism for turnover 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 comprises a finished product stacking mechanism and a stacking transfer mechanism for rotationally displacing between the finished product unloading belt and the finished product stacking mechanism.

3. The automatic assembly equipment for negative battery cover according to claim 2, characterized in that: The busbar conveyor belt comprises a busbar circulating conveyor rail provided with a plurality of busbar positioning seats, and the busbar positioning seats are provided with busbar positioning grooves which are arranged in the same shape as the negative busbar.

4. The automatic assembly equipment for negative battery cover according to claim 2, characterized in that: The convergence tray supply mechanism includes a convergence tray clip loading turntable and a convergence tray transfer part for switching displacement between the discharge end of the convergence tray clip loading turntable and the convergence tray carrier.

5. The automatic assembly equipment for negative battery cover according to claim 2, characterized in that: The disc body supply mechanism comprises a material tray circulation supply part, a disc body conveying rail with a plurality of disc body positioning carriers, and a disc body supply turnover mechanism for displacement switching between the material tray circulation supply part and the disc body positioning carriers.

6. The automatic assembly equipment for negative battery cover according to claim 2, characterized in that: The disc loading station includes a disc visual guidance mechanism which is communicatively connected with the disc loading mechanism and is used for visually guiding the loading of the disc loading mechanism.

7. The automatic assembly equipment for negative battery cover according to claim 2, characterized in that: The convergence plate assembly station includes a convergence plate secondary positioning and shaping tooling arranged between the convergence plate conveyor belt and the assembly loading seat, and the convergence plate loading and transferring mechanism includes a negative pressure picking part with linear displacement, lifting displacement, and rotational displacement, and the negative pressure picking part is provided with at least two convergence plate negative pressure adsorption ends arranged at intervals.

8. The automatic assembly equipment for negative battery cover according to claim 2, characterized in that: The good assembly product conveyor belt includes an assembly component circulation feeding rail with a plurality of assembly component carriers, and the unloading station includes a steering adjustment mechanism arranged on the transfer path of the assembly component transfer mechanism for adjusting the steering angle of the good assembly products.

9. The automatic assembly equipment for negative battery cover according to claim 2, characterized in that: The helium detection device is provided with a re-inspection buffer mechanism located on the displacement path of the material switching displacement mechanism, and 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 loading slots.

10. The automatic assembly equipment for negative battery cover according to claim 2, characterized in that: The explosion-proof valve film sticking device includes a film sticking visual guiding mechanism that is communicatively connected with the transfer and sticking mechanism.

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