Square cell roughening cleaning and spraying system
By forming an insulating layer with high connection strength and insulation performance on the surface of the battery cell, the problems of poor adhesion and withstand voltage performance of the battery cell are solved, and the stability and safety of the battery cell under high voltage platform are achieved.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- WUHAN YIFI LASER CORP LTD
- Filing Date
- 2025-04-23
- Publication Date
- 2026-06-05
Smart Images
Figure CN224321632U_ABST
Abstract
Description
Technical Field
[0001] This utility model relates to the technical field of battery cell production equipment, and in particular to a roughening, cleaning and spraying system for square battery cells. Background Technology
[0002] In related technologies, in some power batteries, the cells can be directly bonded to the PACK cover or vehicle chassis. To ensure a strong bond, the shear force that the bonding location can withstand needs to reach 9-15 MPa. The surface of the cell is usually covered with a blue film that serves as insulation, but the PSA adhesive of this blue film has very limited bonding performance, and its shear force resistance is only 0.5-2 MPa. Furthermore, the PET substrate of the blue film is a low surface energy material, which means that the bonding strength of the structural adhesive on it is only at a low to medium level of 2.0-3.5 MPa. Therefore, when the battery pack is subjected to external impact, the structural adhesive may experience interfacial damage and detach from the blue film, or even cohesive failure of the PSA adhesive, causing the blue film to peel off directly from the cell casing. Simultaneously, with the increase in the operating voltage and energy density of the cells, the probability of arcing or insulation breakdown between cells increases significantly. Traditional blue film circuit breakers only support a maximum breakdown voltage of 2500V, while an 800V voltage platform requires a breakdown voltage of 3000~4000V. Blue film solutions can no longer meet these technical requirements. Utility Model Content
[0003] This invention provides a square battery cell texturing and cleaning spraying system to solve the defects of poor adhesion and pressure resistance of the blue film on the surface of the battery cell in the prior art.
[0004] This utility model provides a square battery cell texturing, cleaning, and spraying system, comprising:
[0005] Conveyor line, used for conveying square battery cells;
[0006] A battery cell loading device is installed at the loading end of the conveyor line to transfer the square battery cells to the conveyor line;
[0007] A UV printing device is installed on the conveyor line and is used to perform UV printing and curing on the surface of the square battery cell to form an insulating layer.
[0008] A cell unloading device is installed at the unloading end of the conveyor line to transfer the square cells off the line.
[0009] According to the square battery cell texturing and cleaning spraying system of this utility model, the UV printing equipment includes a first printing device, an intermediate rotating device and a second printing device arranged sequentially along the conveyor line.
[0010] The first printing device is used to UV print and cure at least one surface of a square battery cell to form an insulating layer;
[0011] The intermediate rotating device is used to flip the square battery cell;
[0012] The second printing device is used to perform UV printing and curing on the surface of the square battery cell where no insulating layer has been formed to form an insulating layer.
[0013] According to the square battery cell texturing, cleaning and spraying system of this utility model, both the first printing device and the second printing device include a laser texturing device, a cleaning device and a printing curing device arranged sequentially along the conveying direction of the conveying line.
[0014] The laser texturing device is used to laser texturize the top surface and opposite sides of the square battery cell respectively; the cleaning device is used to clean the top surface and opposite sides of the square battery cell respectively; the printing and curing device is used to print and cure the top surface and opposite sides of the square battery cell respectively to form an insulating layer.
[0015] According to the square battery cell texturing cleaning and spraying system of this utility model, the laser texturing device includes a first laser, a rotating mechanism, a second laser, and a third laser.
[0016] The first laser, the rotating mechanism, and the second laser are arranged sequentially along the conveying direction of the conveying line; the first laser and the second laser are both located on the same side of the conveying line; the rotating mechanism is used to rotate the square battery cell 180 degrees around the vertical axis; and the third laser is located above the conveying line.
[0017] According to the square battery cell texturing and cleaning spraying system of this utility model, the cleaning device includes a first plasma cleaner and a second plasma cleaner; wherein, the first plasma cleaner is used to perform plasma cleaning on the opposite two sides of the square battery cell; and the second plasma cleaner is used to perform plasma cleaning on the top surface of the square battery cell.
[0018] According to the square battery cell texturing and cleaning spraying system of this utility model, the printing and curing device includes a first printing pre-curing unit, a second printing pre-curing unit, and an electrodeless lamp curing unit; the first printing pre-curing unit is used to perform UV printing and pre-curing on the top surface of the square battery cell to form an insulating layer; the second printing pre-curing unit is used to perform UV printing and pre-curing on the opposite two sides of the square battery cell to form an insulating layer; the electrodeless lamp curing unit is used to cure the insulating layer on the top surface and the opposite two sides of the square battery cell.
[0019] According to the square battery cell texturing and cleaning spraying system of this utility model, both the first printing device and the second printing device further include a defect detection device. The printing curing device and the corresponding defect detection device are arranged sequentially along the conveying direction of the conveying line. The defect detection device is used to detect defects in the insulation layer.
[0020] The square battery cell texturing, cleaning, and spraying system of this utility model also includes a barcode scanning device, which is located between the battery cell loading device and the UV printing device. The barcode scanning device is used to scan the identification code on the square battery cell and generate corresponding record information to be transmitted to the host computer for recording.
[0021] The square battery cell texturing and cleaning spraying system of this utility model also includes a withstand voltage testing device, which includes a testing device and a flipping device; the flipping device is used to flip the square battery cell, and the testing device is used to perform a withstand voltage test on the insulation layer of the square battery cell.
[0022] According to the square battery cell texturing, cleaning, and spraying system of this utility model, the conveyor line is a magnetic levitation line.
[0023] This utility model discloses a square battery cell texturing, cleaning, and spraying system. By setting up battery cell loading and unloading equipment at the beginning and end of a conveyor line, square batteries can be sequentially loaded onto the line, undergo UV printing to form an insulating layer on their surface, and then unloaded. The UV printing equipment on the conveyor line can spray an insulating, photocurable material onto the surface of the square batteries, and then cure the material using ultraviolet light to form an insulating layer. The connection strength, adhesion, and insulation performance of this insulating layer and the square battery cell all meet the requirements for battery use, effectively solving the defects of poor adhesion and voltage resistance of the blue film on the surface of the battery cells in the prior art. Attached Figure Description
[0024] To more clearly illustrate the technical solutions in this utility model or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are some embodiments of this utility model. For those skilled in the art, other drawings can be obtained from these drawings without creative effort.
[0025] Figure 1 This is a schematic diagram of the square battery cell texturing, cleaning, and spraying system provided in this embodiment of the present invention.
[0026] Figure 2 This is a schematic diagram of a square battery cell provided in an embodiment of this utility model.
[0027] Figure 3This is a partially enlarged schematic diagram of the feeding end of the square battery cell texturing, cleaning, and spraying system provided in this embodiment of the utility model.
[0028] Figure 4 This is a partially enlarged schematic diagram of the transfer point of the first processing line and the second processing line provided in the embodiment of this utility model.
[0029] Figure label:
[0030] 1. Square battery cell texturing, cleaning, and spraying system;
[0031] 11. Conveyor line; 111. Loading buffer line; 112. First processing line; 113. Second processing line; 114. First unloading buffer line; 115. Second unloading buffer line;
[0032] 12. Battery cell feeding equipment;
[0033] 13. UV printing equipment; 131. First printing equipment;
[0034] 1311, Laser texturing device; 13111, First laser; 13112, Rotating mechanism; 13113, Second laser; 13114, Third laser;
[0035] 1312. Cleaning apparatus; 13121. First plasma cleaner; 13122. Second plasma cleaner;
[0036] 1313, Printing curing device; 13131, First printing pre-curing unit; 13132, Second printing pre-curing unit; 13133, Electrodeless lamp curing unit;
[0037] 1314. Defect detection device; 132. Intermediate rotating device; 133. Second printing device;
[0038] 14. Battery cell feeding equipment; 15. Barcode scanning equipment; 16. Withstand voltage testing equipment;
[0039] 2. Square battery cell; 21. Long side; 22. Wide side; 23. Narrow side; 3. Feeding line. Detailed Implementation
[0040] To make the objectives, technical solutions, and advantages of this utility model clearer, the technical solutions of this utility model will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of this utility model, not all embodiments. Based on the embodiments of this utility model, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of this utility model.
[0041] The following is combined Figure 1This invention describes a square battery cell texturing, cleaning, and spraying system.
[0042] like Figure 1 As shown, this utility model provides a square battery cell roughening, cleaning, and spraying system 1, including: a conveyor line 11, a battery cell loading device 12, a UV printing device 13, and a battery cell unloading device 14. The conveyor line 11 is used to transport square battery cells 2. The battery cell loading device 12 is located at the loading end of the conveyor line 11 and is used to transfer the square battery cells 2 onto the conveyor line 11. The UV printing device 13 is located on the conveyor line 11 and is used to perform UV printing on the surface of the square battery cells 2 and cure it to form an insulating layer. The battery cell unloading device 14 is located at the unloading end of the conveyor line 11 and is used to transfer the square battery cells 2 off the line.
[0043] In this embodiment, the conveyor line 11 is used to transport the square battery cell 2, allowing the square battery cell 2 to pass through the UV printing equipment 13 in an assembly line manner. The UV (Ultraviolet) printing equipment 13 can form an insulating layer on the surface of the square battery cell 2 by UV printing. Specifically, the UV printing equipment 13 can spray a liquid, insulating photocurable material onto the surface of the square battery cell 2 and cure the photocurable material with ultraviolet light, thereby curing the photocurable material on the surface of the square battery cell 2 to form an insulating layer. The insulating layer formed by UV printing has a high connection strength with the square battery cell 2, and also has good adhesion and insulation properties.
[0044] Meanwhile, it can be understood that the starting end of the conveyor line 11 is the loading end, and the ending end of the conveyor line 11 is the unloading end. A cell loading device 12 is installed at the loading end to transfer the square cells 2 to be printed from other lines or from the buffer device to the conveyor line 11. A cell unloading device 14 is installed at the unloading end to transfer the square cells 2, whose printed surfaces already have an insulating layer, to the corresponding buffer device or other lines, thus realizing the loading and unloading of the cells. Optionally, the conveyor line 11 can be configured as a double-row folding line, so that the cell loading device 12 and the cell unloading device 14 are located on the same side of the entire square cell roughening, cleaning, and spraying system 1, making it convenient to install on the same side of the loading line 3 used for transporting the square cells 2.
[0045] The square battery cell texturing, cleaning, and spraying system 1 of this invention, by setting a battery cell loading device 12 and a battery cell unloading device 14 at the beginning and end of a conveyor line 11 respectively, allows square battery cells 2 to be sequentially loaded onto the line in an assembly line manner, undergo UV printing to form an insulating layer on their surface, and then unloaded. The UV printing device 13 on the conveyor line 11 can spray a photocurable material with insulating properties onto the surface of the square battery cells 2, and use ultraviolet light to cure the photocurable material to form an insulating layer. The connection strength, adhesion performance, and insulation performance of this insulating layer and the square battery cells 2 can all meet the battery usage requirements, effectively solving the defects of poor adhesion and voltage resistance of the blue film battery cells on the surface of the existing technology.
[0046] It is understandable that, such as Figure 2 As shown, the square battery cell 2 is generally rectangular in shape, including a top surface, a bottom surface, and four sides. Generally speaking, the side of the square battery cell 2 facing upward is the top surface, and the bottom surface is the side opposite to the top surface.
[0047] Specifically, in some embodiments, such as Figure 1 As shown, the UV printing equipment 13 includes a first printing device 131, an intermediate rotating device 132, and a second printing device 133 arranged sequentially along the conveying direction of the conveyor line 11. The first printing device 131 is used to UV print and cure the top surface and two sides of the square battery cell 2 to form an insulating layer. The intermediate rotating device 132 is used to rotate the square battery cell 2. The second printing device 133 is used to UV print and cure the bottom surface and the remaining two sides of the square battery cell 2 to form an insulating layer.
[0048] In this embodiment, by arranging the first printing device 131, the intermediate rotating device 132, and the second printing device 133 sequentially along the conveying direction of the conveyor line 11, the square battery cell 2 passes through the first printing device 131, the intermediate rotating device 132, and the second printing device 133 in sequence to form an insulating layer on all surfaces of the square battery cell 2. Specifically, the first printing device 131 is used to UV print and cure the top surface and two sides of the square battery cell 2, wherein the top surface and the two sides are connected. By properly placing the square battery cell 2 on the conveyor line 11, the first printing device 131 can minimize the number of times the square battery cell 2 is flipped while performing UV printing on these three surfaces. After the insulating layer is formed on the top surface and the two sides, the square battery cell 2 passes through the intermediate rotating device 132, which is used to flip the square battery cell 2 so that the square battery cell 2 passes through the second printing device 133 in a more suitable posture. Similar to the first printing device 131, the second printing device 133 can UV print and cure the bottom surface and the other two sides of the square battery cell 2 to form insulation. It is evident that the above layout and process flow can reduce the number of times the square battery cell 2 is flipped during the entire UV printing process, which helps to reduce the number of steps and improve production efficiency.
[0049] It is understandable that the first printing device 131 and the second printing device 133 have similar functions, except that the processing surface on the square battery cell 2 is different. The device configuration and layout of the first printing device 131 and the second printing device 133 can be similar or the same.
[0050] Specifically, in some embodiments, such as Figure 1 As shown, both the first printing device 131 and the second printing device 133 include a laser texturing device 1311, a cleaning device 1312, and a printing and curing device 1313 arranged sequentially along the conveying direction of the conveyor line 11. The laser texturing device 1311 is used to laser texturize the top surface and opposite sides of the square battery cell 2. The cleaning device 1312 is used to clean the top surface and opposite sides of the square battery cell 2. The printing and curing device 1313 is used to print and cure the top surface and opposite sides of the square battery cell 2 to form an insulating layer.
[0051] It is understood that the top surface of the square battery cell 2 mentioned in this embodiment refers to the side of the square battery cell 2 facing upwards when it is transported and processed on the conveyor line 11. The two opposite sides of the square battery cell 2 are also the two sides facing to the sides on the conveyor line 11. Since the square battery cell 2 may be flipped several times during the entire processing, the surfaces referred to by the top surface and the sides will also change.
[0052] Specifically, after the cell feeding device 12 transfers the square cell 2 to the conveyor line 11, the top surface of the square cell 2 faces upward, and the two opposite sides face the two sides of the conveyor line 11 respectively.
[0053] The square battery cell 2 sequentially passes through the laser texturing device 1311, the cleaning device 1312, and the printing and curing device 1313 of the first printing equipment 131. The laser texturing device 1311 can perform surface treatment on the top surface and two opposite sides of the square battery cell 2 with a high-energy laser beam, so that the roughness of these three surfaces is suitable for UV printing and curing. After laser texturing, the square battery cell 2 passes through the cleaning device 1312, which can clean the impurities attached to the top surface and two opposite sides of the square battery cell 2. After cleaning, the square battery cell 2 enters the printing and curing device 1313, which sprays a photocurable material onto the top surface and two opposite sides of the square battery cell 2 and finally cures it to form an insulating layer.
[0054] After the insulating layer is formed on the three surfaces, the square cell 2 is flipped by the intermediate rotating device 132, so that the original top surface and the ground surface are swapped, and the other two untreated opposite sides are respectively facing the two sides of the conveyor line 11, so that they can be UV printed and cured by the second printing device 133. The specific device and process flow of the second printing device 133 are similar to those of the first printing device 131, and will not be described again here.
[0055] Specifically, in some embodiments, such as Figure 1 As shown, the laser texturing device 1311 includes a first laser 13111, a rotating mechanism 13112, a second laser 13113, and a third laser 13114. The first laser 13111, the rotating mechanism 13112, and the second laser 13113 are arranged sequentially along the conveying direction of the conveyor line 11. Both the first laser 13111 and the second laser 13113 are located on the same side of the conveyor line 11. The rotating mechanism 13112 is used to rotate the square battery cell 2 180 degrees around its vertical axis. The third laser 13114 is positioned above the conveyor line 11.
[0056] In this embodiment, a first laser 13111, a rotating mechanism 13112, and a second laser 13113 are sequentially arranged along the conveying direction of the conveyor line 11. The first laser 13111 and the second laser 13113 are both located on the same side of the conveyor line 11. When the square battery cell 2 passes the position opposite to the first laser 13111, the first laser 13111 can perform laser texturing on the side of the square battery cell 2 opposite to the first laser 13111. After processing, the square battery cell 2 passes through the rotating mechanism 13112, which rotates the square battery cell 2 180 degrees around the vertical axis, so that the other side of the square battery cell 2 opposite to the processed side faces the second laser 13113, so that the second laser 13113 can perform laser texturing on the other side. The third laser 13114 can be used to perform laser texturing on the top surface of the square battery cell 2, thereby realizing laser texturing on all three sides of the square battery cell 2.
[0057] In some embodiments, such as Figure 1 As shown, the cleaning apparatus 1312 includes a first plasma cleaner 13121 and a second plasma cleaner 13122. The first plasma cleaner 13121 is used to perform plasma cleaning on the opposite sides of the square battery cell 2. The second plasma cleaner 13122 is used to perform plasma cleaning on the top surface of the square battery cell 2.
[0058] In this embodiment, the first plasma cleaner 13121 has two cleaning mechanisms arranged opposite each other. One cleaning mechanism is located on one side of the conveyor line 11, and the other is located on the other side of the conveyor line 11. When the square battery cell 2 passes through the first plasma cleaner 13121, the two cleaning mechanisms respectively emit plasma to the two sides of the square battery cell 2 to clean the two sides, so as to facilitate subsequent UV printing and curing on the two sides. The cleaning mechanism of the second plasma cleaner 13122 is located at the top of the conveyor line 11 so as to emit plasma to the top surface of the square battery cell 2 for subsequent UV printing and curing.
[0059] Specifically, in some embodiments, such as Figure 1 As shown, the printing curing apparatus 1313 includes a first printing pre-curing unit 13131, a second printing pre-curing unit 13132, and an electrodeless lamp curing unit 13133. The first printing pre-curing unit 13131 is used to perform UV printing and pre-curing on the top surface of the square battery cell 2 to form an insulating layer. The first printing pre-curing unit 13131 is also used to perform UV printing and pre-curing on the opposite sides of the square battery cell 2 to form an insulating layer. The electrodeless lamp curing unit 13133 is used to cure the insulating layers on the top surface and opposite sides of the square battery cell 2.
[0060] In this embodiment, the first pre-curing printer 13131 sprays a photocurable material onto the top surface of the square battery cell 2 and then irradiates the top surface with ultraviolet light to allow the photocurable material on the top surface of the square battery cell 2 to initially cure and form an insulating layer. The second pre-curing printer 13132 is used to initially form an insulating layer on the opposite two sides of the square battery cell 2. After the initial cured insulating layers are formed on all three sides of the square battery cell 2, the square battery cell 2 is transported to the electrodeless lamp curing unit 13133, where it is irradiated with ultraviolet light by the electrodeless lamp to cure and form the final insulating layer that meets the usage requirements. The electrodeless lamp curing unit 13133 uses an electrodeless lamp as the ultraviolet light source, which has a longer service life, slower light decay, higher luminous efficiency, more stable and reliable light, and better curing effect.
[0061] In some embodiments, such as Figure 1 As shown, both the first printing device 131 and the second printing device 133 further include a defect detection device 1314. The printing curing device 1313 and the corresponding defect detection device 1314 are arranged sequentially along the conveying direction of the conveyor line 11. The defect detection device 1314 is used to detect defects in the insulation layer.
[0062] In this embodiment, a defect detection device 1314 is installed at a subsequent station of the printing and curing device 1313. After the square battery cell 2 has a cured insulation layer formed on its three corresponding sides, it is transported to the defect detection device 1314 by the conveyor line 11. The defect detection device 1314 can detect whether there are defects on the insulation layer. It is understood that the defect detection device 1314 can communicate with the monitoring system of the entire production line so that it can report to the monitoring system when an insulation layer defect is detected. At the same time, it can also communicate with some alarm devices (such as indicator lights, alarms, etc.) so that an alarm can be triggered when an insulation layer defect is detected, so as to remind production personnel to process and rework the square battery cell 2 with defects.
[0063] Alternatively, in some embodiments, such as Figure 1 As shown, the square battery cell texturing, cleaning, and spraying system 1 also includes a barcode scanner 15, which is located between the battery cell loading device 12 and the UV printing device 13. The barcode scanner 15 is used to scan the identification code on the square battery cell 2 and generate corresponding record information to be transmitted to the host computer for recording.
[0064] In this embodiment, it is understood that, for ease of traceability, the square battery cell 2 is typically equipped with an identification code, which corresponds to production information such as the production batch and serial number of the square battery cell 2. By setting up a barcode scanning device 15 between the battery cell loading equipment 12 and the UV printing equipment 13, after the battery cell loading equipment 12 loads the square battery cell 2 to be processed, when the square battery cell 2 passes through the barcode scanning device 15, the barcode scanning device 15 scans the identification code on the square battery cell 2, and generates corresponding production information such as the production batch and serial number based on the identification code, and transmits it to the host computer used to monitor the production process for recording, facilitating subsequent traceability.
[0065] In some embodiments, such as Figure 1 As shown, the square battery cell texturing and cleaning spraying system 1 also includes a withstand voltage testing device 16, which includes a testing device and a flipping device; the flipping device is used to flip the square battery cell 2, and the testing device is used to perform a withstand voltage test on the insulation layer of the square battery cell 2.
[0066] In this embodiment, after the insulation layer on each surface of the square battery cell 2 is cured and formed, it can be transferred by a flipping device to transfer the square battery cell 2 to the testing device to perform a withstand voltage test on the insulation layer of the square battery cell 2 to determine whether the withstand voltage performance of the insulation layer meets the product standard.
[0067] Specifically, in some embodiments, the conveyor line 11 is a double-row magnetic levitation line, and the cell loading device 12 and the cell unloading device 14 are arranged in parallel.
[0068] In this embodiment, by setting the conveyor line 11 as a magnetic levitation line, the square battery cell 2 is directly suspended above the conveyor line 11 during the conveying process, realizing contactless transportation, reducing the wear on the bottom of the square battery cell 2, and eliminating the need to set up a tray and repeatedly recycle the tray.
[0069] Meanwhile, the conveyor line 11 is designed as a double-row line, so that the feeding end and the unloading end of the conveyor line 11 are located on the same side, which makes it convenient to set the battery cell feeding device 12 and the battery cell unloading device 14 on one side of the feeding line 3. The battery cell feeding device 12 transfers the uncoated square battery cell 2 from the feeding line 3 to the conveyor line 11, and the battery cell unloading device 14 transfers the coated square battery cell 2 back to the feeding line 3.
[0070] In one specific embodiment, such as Figure 1 and Figure 3 As shown, the conveyor line 11 includes a loading buffer line 111, a first processing line 112, a second processing line 113, a first unloading buffer line 114, and a second unloading buffer line 115.
[0071] Among them, the battery cell feeding equipment 12 is set between the feeding end of the feeding line 3 and the feeding buffer line 111. The unloading end of the feeding buffer line 111 and the feeding end of the first processing line 112 are arranged accordingly. A first transfer device is provided between the unloading end of the feeding buffer line 111 and the first processing line 112. Along the conveying direction of the first processing line 112, there are sequentially arranged the following components: a barcode scanning device 15, a first laser 13111 of the first printing device 131, a rotating mechanism 13112, a second laser 13113, a third laser 13114, a first plasma cleaner 13121, a second plasma cleaner 13122, a first printing pre-curing unit 13131, a second printing pre-curing unit 13132, an electrodeless lamp curing unit 13133, a defect detection device 1314, and a first rotating device of the intermediate rotating device 132.
[0072] The end point of the first processing line 112 is arranged parallel to the loading end of the second processing line 113. A second transfer device is provided between the end point of the first processing line 112 and the loading end of the second processing line 113. Along the conveying direction of the second processing line 113, the following are arranged in sequence: the second rotating device of the intermediate rotating device 132, the third laser 13114 of the second printing device 133, the first laser 13111, the rotating mechanism 13112, the second laser 13113, the second plasma cleaner 13122, the first plasma cleaner 13121, and the first printing device 133. The pre-curing unit 13131, the second printing pre-curing unit 13132, the electrodeless lamp curing unit 13133, the defect detection device 1314, and the withstand voltage testing device 16 are arranged in parallel with the second processing line 113, the first unloading buffer line 114, and the second unloading buffer line 115. A third transfer device is provided between the second processing line 113 and the first unloading buffer line 114 and the second unloading buffer line 115. The first unloading buffer line 114 and the loading buffer line 111 are arranged in parallel. The unloading end of the first unloading buffer line 114 is provided with a cell unloading device 14.
[0073] To facilitate the explanation of the processing flow of the square battery cell 2 in the embodiment, as follows: Figure 2 As shown, the square battery cell 2 has a long side 21, a wide side 22, and a narrow side 23. The surface enclosed by the wide side 22 and the narrow side 23, where two electrodes are located, is the top surface of the square battery cell 2 (different from the top surface mentioned earlier, which refers to the side of the square battery cell 2 facing directly upwards). The surface opposite the top surface is the bottom surface. The surface enclosed by the long side 21 and the wide side 22 is the large surface of the square battery cell 2. The surface enclosed by the long side 21 and the narrow side 23 is the narrow surface of the square battery cell.
[0074] Based on the above embodiments, the processing flow of the square battery cell 2 by the square battery cell roughening, cleaning and spraying system 1 is as follows:
[0075] The cell loading device 12 transfers the square cells 2 to be processed to the loading buffer line 111 for buffering, and buffers the square cells 2 with the top surface facing up and the two large surfaces facing the sides of the line body. The first transfer device transfers the square cells 2 on the loading buffer line 111 to the first processing line 112, and the square cells 2 are transported along the first processing line 112 and processed.
[0076] First, the barcode scanner 15 scans the square battery cell 2 and records relevant information. Then, the square battery cell 2 passes through the first laser 13111 of the first printing device 131, where the first laser 13111 roughens one large surface of the square battery cell 2. Next, the square battery cell 2 passes through the rotating mechanism 13112, which rotates the square battery cell 2 180 degrees around its vertical axis, so that the other large surface of the square battery cell 2 faces the second laser 13113. The square battery cell 2 then passes through the second laser 13113, where the second laser 13113 roughens the other large surface of the square battery cell 2. Finally, the square battery cell 2 passes through the third laser 13114, where the third laser 13114 roughens the top surface of the square battery cell 2.
[0077] After laser texturing of the top surface and the two large surfaces, the square battery cell 2 passes through the first plasma cleaner 13121 and the second plasma cleaner 13122 in sequence. The first plasma cleaner 13121 performs plasma cleaning on the two large surfaces of the square battery cell 2, and the second plasma cleaner 13122 performs plasma cleaning on the top surface of the square battery cell 2.
[0078] After plasma cleaning of the top surface and the two large surfaces, the square battery cell 2 passes through the first printing pre-curing unit 13131 and the second printing pre-curing unit 13132 in sequence. The first printing pre-curing unit 13131 performs UV printing and pre-curing on the top surface of the square battery cell 2, and the second printing pre-curing unit 13132 performs UV printing and pre-curing on the two large surfaces of the square battery cell 2.
[0079] After completing the UV printing and pre-curing of the top surface and the two large surfaces, the square battery cell 2 is passed through the electrodeless lamp curing unit 13133. The electrodeless lamp curing unit 13133 further irradiates and cures the top surface and the two large surfaces of the square battery cell 2, so that the insulation layer of the top surface and the two large surfaces is completely cured and formed.
[0080] Next, the square battery cell 2 passes through the defect detection device 1314, which is used to detect defects on the top surface and two large surfaces of the square battery cell 2.
[0081] After the test is completed, if Figure 4 As shown, the first rotating device of the intermediate rotating device 132 rotates the square battery cell 2 180 degrees around the horizontal axis, so that the bottom surface of the square battery cell 2 faces upward and the two large faces face the two sides of the production line. Then, the second transfer device transfers the square battery cell 2 from the first processing line 112 to the second processing line 113. On the second processing line 113, the second rotating device of the intermediate rotating device 132 rotates the square battery cell 2 90 degrees around the vertical axis, so that the bottom surface of the square battery cell 2 faces upward and the two narrow faces face the two sides of the production line, so as to facilitate subsequent processing of the bottom surface and the two narrow faces that do not have an insulating layer formed.
[0082] Next, the square battery cell 2 passes through the third laser 13114 of the second printing device 133, where the third laser 13114 performs laser texturing on the bottom surface of the square battery cell 2. Then, the square battery cell 2 passes through the first laser 13111, where the first laser 13111 performs laser texturing on one of the narrow faces of the square battery cell 2. Then, the square battery cell 2 passes through the rotating mechanism 13112, which rotates the square battery cell 2 180 degrees around the vertical axis, so that the other narrow face of the square battery cell 2 faces the second laser 13113. Then, the square battery cell 2 passes through the second laser 13113, where the second laser 13113 performs laser texturing on the other large face of the square battery cell 2.
[0083] After laser texturing of the bottom surface and the two narrow surfaces, the square battery cell 2 passes through the second plasma cleaner 13122 and the first plasma cleaner 13121 in sequence. The second plasma cleaner 13122 performs plasma cleaning on the bottom surface of the square battery cell 2, and the first plasma cleaner 13121 performs plasma cleaning on the two narrow surfaces of the square battery cell 2.
[0084] After plasma cleaning of the bottom surface and the two narrow surfaces, the square battery cell 2 passes through the first printing pre-curing unit 13131 and the second printing pre-curing unit 13132 in sequence. The first printing pre-curing unit 13131 performs UV printing and pre-curing on the bottom surface of the square battery cell 2, and the second printing pre-curing unit 13132 performs UV printing and pre-curing on the two narrow surfaces of the square battery cell 2.
[0085] After completing the UV printing and pre-curing of the bottom surface and the two narrow surfaces, the square battery cell 2 is passed through the electrodeless lamp curing unit 13133. The electrodeless lamp curing unit 13133 further irradiates and cures the bottom surface and the two narrow surfaces of the square battery cell 2, so that the insulation layer of the bottom surface and the two narrow surfaces is completely cured and formed.
[0086] Next, the square battery cell 2 passes through the defect detection device 1314, which is used to detect defects on the bottom surface and two narrow surfaces of the square battery cell 2.
[0087] Finally, after the square battery cells 2 are tested by the withstand voltage testing equipment 16, the qualified cells are transferred by the third transfer equipment to the first unloading buffer line 114 for buffering, while the unqualified cells are transferred to the second unloading buffer line 115 for buffering, so that production personnel can handle the unqualified cells, analyze the cause of failure, trace the source, and perform other subsequent operations. The battery cell unloading equipment 14 is used to transfer the square battery cells 2 buffered on the first unloading buffer line 114 back to the loading line 3 for subsequent processing.
[0088] It is understood that the equipment in this application that needs to adjust the position or orientation of the square battery cell 2 (such as the battery cell loading equipment 12, the rotating mechanism 13112, the flipping device of the withstand voltage testing equipment 16, and the battery cell unloading equipment 14) may include a robot arm, or may include a bracket and a battery cell clamp that can be movably set on the bracket, so as to hold the square battery cell 2 and flip or transfer the square battery cell 2.
[0089] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of this utility model, and not to limit it. Although this utility model has been described in detail with reference to the foregoing embodiments, those skilled in the art should understand that modifications can still be made to the technical solutions described in the foregoing embodiments, or equivalent substitutions can be made to some of the technical features. Such modifications or substitutions do not cause the essence of the corresponding technical solutions to deviate from the spirit and scope of the technical solutions of the embodiments of this utility model.
Claims
1. A square battery cell texturing, cleaning, and spraying system, characterized in that, include: Conveyor line, used for conveying square battery cells; A battery cell loading device is installed at the loading end of the conveyor line to transfer the square battery cells to the conveyor line; A UV printing device is installed on the conveyor line and is used to perform UV printing and curing on the surface of the square battery cell to form an insulating layer. A cell unloading device is installed at the unloading end of the conveyor line to transfer the square cells off the line; The UV printing equipment includes a first printing device, an intermediate rotating device, and a second printing device arranged sequentially along the conveyor line; The first printing device is used to UV print and cure at least one surface of a square battery cell to form an insulating layer; The intermediate rotating device is used to flip the square battery cell; The second printing device is used to perform UV printing and curing on the surface of the square battery cell where no insulating layer has been formed to form an insulating layer.
2. The square battery cell texturing, cleaning, and spraying system according to claim 1, characterized in that, Both the first printing device and the second printing device include a laser texturing device, a cleaning device, and a printing curing device arranged sequentially along the conveying direction of the conveyor line; The laser texturing device is used to laser texturize the top surface and opposite sides of the square battery cell respectively; the cleaning device is used to clean the top surface and opposite sides of the square battery cell respectively; the printing and curing device is used to print and cure the top surface and opposite sides of the square battery cell respectively to form an insulating layer.
3. The square battery cell texturing, cleaning, and spraying system according to claim 2, characterized in that, The laser texturing device includes a first laser, a rotating mechanism, a second laser, and a third laser; The first laser, the rotating mechanism, and the second laser are arranged sequentially along the conveying direction of the conveying line; the first laser and the second laser are both located on the same side of the conveying line; the rotating mechanism is used to rotate the square battery cell 180 degrees around the vertical axis; and the third laser is located above the conveying line.
4. The square battery cell texturing, cleaning, and spraying system according to claim 2, characterized in that, The cleaning apparatus includes a first plasma cleaner and a second plasma cleaner; wherein, the first plasma cleaner is used to perform plasma cleaning on the opposite two sides of the square battery cell; and the second plasma cleaner is used to perform plasma cleaning on the top surface of the square battery cell.
5. The square battery cell texturing, cleaning, and spraying system according to claim 2, characterized in that, The printing and curing apparatus includes a first printing pre-curing unit, a second printing pre-curing unit, and an electrodeless lamp curing unit; the first printing pre-curing unit is used to perform UV printing and pre-curing on the top surface of the square battery cell to form an insulating layer; the second printing pre-curing unit is used to perform UV printing and pre-curing on the opposite sides of the square battery cell to form an insulating layer; the electrodeless lamp curing unit is used to cure the insulating layer on the top surface and opposite sides of the square battery cell.
6. The square battery cell texturing, cleaning, and spraying system according to claim 2, characterized in that, Both the first printing device and the second printing device further include a defect detection device. The printing curing device and the corresponding defect detection device are arranged sequentially along the conveying direction of the conveyor line. The defect detection device is used to detect defects in the insulating layer.
7. The square battery cell texturing, cleaning, and spraying system according to claim 1, characterized in that, It also includes a barcode scanning device, which is located between the battery cell loading device and the UV printing device; the barcode scanning device is used to scan the identification code on the square battery cell and generate corresponding record information to be transmitted to the host computer for recording.
8. The square battery cell texturing, cleaning, and spraying system according to claim 1, characterized in that, It also includes a withstand voltage testing device, which includes a testing device and a flipping device; the flipping device is used to flip the square battery cell, and the testing device is used to perform a withstand voltage test on the insulation layer of the square battery cell.
9. The square battery cell texturing, cleaning, and spraying system according to any one of claims 1 to 8, characterized in that, The conveyor line is a double-row magnetic levitation line, and the battery cell loading equipment and the battery cell unloading equipment are arranged in parallel.