Cylindrical cell roughening cleaning and spraying system

Abstract

The utility model relates to the technical field of battery production equipment, provide a cylindrical battery roughening cleaning spraying system, include: the conveying line and the conveying direction of conveying line set gradually battery loading equipment, laser roughening equipment, cleaning equipment, printing solidification equipment and battery unloading equipment. Conveying line is used for transporting cylindrical battery. The battery loading equipment sets up in the loading end of conveying line, is used for the transfer of cylindrical battery to conveying line. The battery unloading equipment sets up in the unloading end of conveying line. The cylindrical battery roughening cleaning spraying system of the utility model, the laser roughening equipment, cleaning equipment, printing solidification equipment in sequence of conveying line arrangement can respectively to the surface of cylindrical battery laser roughening treatment, cleaning and coating have the light curing material of insulating property to the ultraviolet light and make the light curing material solidification form insulating layer, the connection strength, the adhesion and the insulating property of this insulating layer and cylindrical battery can satisfy the use demand of battery.

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 cylindrical 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 cylindrical 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 cylindrical battery cell texturing, cleaning, and spraying system, comprising:

[0005] A conveyor line for transporting the cylindrical battery cells;

[0006] A battery cell loading device is installed at the loading end of the conveyor line to transfer the cylindrical battery cells to the conveyor line;

[0007] A laser texturing device, a cleaning device, and a printing and curing device are sequentially arranged along the conveying direction of the conveyor line; the laser texturing device is used to laser texturize the surface of the cylindrical battery cell; the cleaning device is used to clean the surface of the cylindrical battery cell; and the printing and curing device is used to UV print and cure the surface of the cylindrical 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 cylindrical cells off the line.

[0009] According to the present invention, the cylindrical battery cell texturing, cleaning and spraying system includes a printing and curing device and a final curing device arranged sequentially along the conveying direction of the conveyor line. The printing and curing device is used to perform UV printing and pre-curing on the surface of the cylindrical battery cell to form an insulating layer. The final curing device is used to cure the insulating layer on the surface of the cylindrical battery cell.

[0010] According to the present invention, the cylindrical battery cell texturing, cleaning, and spraying system includes a printing and pre-curing device comprising an end-face printing device and a cylindrical surface printing device; the end-face printing device is used to perform UV printing and pre-curing on the two end faces of the cylindrical battery cell to form an insulating layer; the cylindrical surface printing device is used to perform UV printing and pre-curing on the cylindrical surface of the cylindrical battery cell to form an insulating layer.

[0011] According to the cylindrical battery cell texturing and cleaning spraying system of this utility model, the end face printing device includes a first flipping mechanism, a first printing pre-curing mechanism, a second flipping mechanism, and a second printing pre-curing mechanism arranged sequentially along the conveying direction of the conveying line.

[0012] The first flipping mechanism is used to flip the cylindrical battery cell so that one end face of the cylindrical battery cell faces upward; the first printing and pre-curing mechanism is used to perform UV printing and pre-curing on the end face to form an insulating layer.

[0013] The second flipping mechanism is used to flip the cylindrical battery cell so that the other end face of the cylindrical battery cell faces upward; the second printing and pre-curing mechanism is used to perform UV printing and pre-curing on the other end face to form an insulating layer.

[0014] According to the present invention, the cylindrical battery cell texturing and cleaning spraying system includes a cylindrical printing device comprising a third flipping mechanism, a first rotating mechanism, and a third printing pre-curing mechanism.

[0015] The third flipping mechanism is used to flip the cylindrical battery cell so that the central axis of the cylindrical battery cell extends horizontally and is perpendicular to the conveying direction of the conveying line;

[0016] The first rotating mechanism is respectively disposed on both sides of the conveyor line for clamping and rotating the cylindrical battery cell; the third printing and pre-curing mechanism is disposed on the conveyor line at the position corresponding to the first rotating mechanism for performing UV printing and pre-curing on the cylindrical surface of the cylindrical battery cell to form an insulating layer.

[0017] According to the cylindrical battery cell texturing cleaning and spraying system of this utility model, the laser texturing equipment includes a second rotating mechanism, a first laser, a second laser, and a third laser.

[0018] The second rotating mechanism is respectively disposed on both sides of the conveyor line for clamping and rotating the cylindrical battery cell; the first laser is disposed on the conveyor line at the position corresponding to the second rotating mechanism for laser roughening the cylindrical surface of the cylindrical battery cell.

[0019] The second laser and the third laser are disposed on the side of the conveyor line. The second laser is used to laser roughen one end face of the cylindrical battery cell, and the second laser is used to laser roughen the other end face of the cylindrical battery cell.

[0020] According to the cylindrical battery cell texturing and cleaning spraying system of this utility model, the cleaning equipment includes a third rotating mechanism, a first plasma cleaner and a second plasma cleaner.

[0021] The third rotating mechanism is respectively disposed on both sides of the conveyor line for clamping and rotating the cylindrical battery cell; the first plasma cleaner is disposed on the conveyor line at the position corresponding to the third rotating mechanism for plasma cleaning the cylindrical surface of the cylindrical battery cell.

[0022] The second plasma cleaner is respectively installed on both sides of the conveyor line and is used to perform plasma cleaning on the two end faces of the cylindrical battery cell.

[0023] The cylindrical battery cell texturing, cleaning, and spraying system of this utility model further includes a defect detection device, which is disposed between the printing and curing device and the battery cell unloading device, and is used to detect defects in the insulation layer.

[0024] The cylindrical battery cell texturing, cleaning, and spraying system of this utility model further includes a withstand voltage testing device, which is disposed between the defect detection device and the battery cell unloading device, and is used to test the withstand voltage performance of the insulation layer.

[0025] According to the cylindrical battery cell texturing, cleaning and spraying system of this utility model, the conveyor line includes a first line body, a second line body and two transfer mechanisms;

[0026] The first and second production lines are arranged vertically; one of the two transfer mechanisms is located at one end of the first and second production lines, and the other is located at the other end of the first and second production lines; the first production line is used to transport a tray containing cylindrical battery cells from the loading end to the unloading end, and the second production line is used to transport the tray from the unloading end to the loading end; the transfer mechanism is used to transfer the tray between the first and second production lines.

[0027] This utility model discloses a cylindrical battery cell texturing, cleaning, and coating system. By setting up battery cell loading and unloading equipment at the beginning and end of a conveyor line, cylindrical batteries can be sequentially loaded onto the line, UV-printed to form an insulating layer on their surface, and then unloaded. The laser texturing equipment, cleaning equipment, and printing curing equipment arranged sequentially on the conveyor line can respectively perform laser texturing, cleaning, and coating of a UV-curable material with insulating properties on the surface of the cylindrical batteries. The UV-curable material is then cured to form an insulating layer. The connection strength, adhesion, and insulation performance of this insulating layer and the cylindrical battery cell all meet the requirements of battery use, effectively solving the defects of poor adhesion and voltage resistance of the blue film on the battery cell surface in existing technologies. Attached Figure Description

[0028] 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.

[0029] Figure 1 This is a schematic diagram of the cylindrical battery cell texturing, cleaning, and spraying system provided in this embodiment of the utility model.

[0030] Figure label:

[0031] 1. Cylindrical battery cell texturing, cleaning, and spraying system;

[0032] 11. Conveyor line; 111. Feeding and buffering line; 112. Double-layer reflow processing line;

[0033] 12. Battery cell feeding equipment;

[0034] 13. Laser texturing equipment; 131. Second rotating mechanism; 132. First laser; 133. Second laser; 134. Third laser;

[0035] 14. Cleaning equipment; 141. Third rotating mechanism; 142. First plasma cleaner; 143. Second plasma cleaner;

[0036] 15. Printing and curing equipment; 151. Printing and pre-curing equipment; 1511. End face printing device; 15111. First flipping mechanism; 15112. First printing and pre-curing mechanism; 15113. Second flipping mechanism; 15114. Second printing and pre-curing mechanism; 1512. Cylindrical printing device; 15121. Third flipping mechanism; 15122. First rotation mechanism; 15123. Third printing and pre-curing mechanism; 152. Final curing equipment;

[0037] 16. Cell cutting equipment; 17. Defect detection equipment; 18. Withstand voltage testing equipment. Detailed Implementation

[0038] 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.

[0039] The following is combined Figure 1 This invention describes a cylindrical battery cell texturing, cleaning, and spraying system.

[0040] like Figure 1 As shown, this utility model provides a cylindrical battery cell texturing, cleaning, and spraying system 1, comprising: a conveyor line 11 and, sequentially arranged along the conveying direction of the conveyor line 11, a battery cell loading device 12, a laser texturing device 13, a cleaning device 14, a printing and curing device 15, and a battery cell unloading device 16. The conveyor line 11 is used to transport cylindrical battery cells. The battery cell loading device 12 is located at the loading end of the conveyor line 11 and is used to transfer the cylindrical battery cells to the conveyor line 11. The laser texturing device 13 is used to laser texturize the surface of the cylindrical battery cells. The cleaning device 14 is used to clean the surface of the cylindrical battery cells. The printing and curing device 15 is used to UV print and cure the surface of the cylindrical battery cells to form an insulating layer. The battery cell unloading device 16 is located at the unloading end of the conveyor line 11 and is used to transfer the cylindrical battery cells off the line.

[0041] In this embodiment, the conveyor line 11 is used to transport cylindrical battery cells, which are then sequentially passed through the laser texturing equipment 13, the cleaning equipment 14, and the printing and curing equipment 15 in an assembly line manner. An insulating layer is formed on the surface of the cylindrical battery cells by UV (Ultraviolet) printing. Specifically, the printing and curing equipment 15 can spray a liquid, insulating photocurable material onto the surface of the cylindrical battery cells and cure the material with ultraviolet light, thereby solidifying the photocurable material on the surface of the cylindrical battery cells to form an insulating layer. The insulating layer formed by UV printing has high connection strength with the cylindrical battery cells and also has good adhesion and insulation properties.

[0042] Specifically, the laser texturing equipment 13 can perform surface treatment on the cylindrical battery cell using a high-energy laser beam, making the surface roughness of the cylindrical battery cell suitable for UV printing and curing. After laser texturing, the cylindrical battery cell passes through the cleaning equipment 14, which can clean the impurities attached to the surface of the cylindrical battery cell. After cleaning, the cylindrical battery cell enters the printing and curing equipment 15, which can spray a liquid photocurable material with insulating properties onto the surface of the cylindrical battery cell and cure the photocurable material with ultraviolet light, thereby curing the photocurable material on the surface of the cylindrical battery cell to form an insulating layer. The insulating layer formed by UV printing has a high connection strength with the cylindrical battery cell and also has good adhesion and insulation properties.

[0043] Meanwhile, it can be understood that the starting end of the conveyor line 11 is the feeding end, and the ending end of the conveyor line 11 is the unloading end. The feeding end is equipped with a cell feeding device 12 to transfer the cylindrical cells to be printed from other lines or from the buffer device to the conveyor line 11. The unloading end is equipped with a cell unloading device 16 to transfer the cylindrical cells with the insulating layer on the printed surface to the corresponding buffer device or other lines, so as to realize the loading and unloading of the cells.

[0044] The cylindrical battery cell texturing, cleaning, and coating system 1 of this invention, by setting up a battery cell loading device 12 and a battery cell unloading device 16 at the beginning and end of a conveyor line 11 respectively, allows cylindrical battery cells to be sequentially loaded onto the line in an assembly line manner, undergo UV printing to form an insulating layer on the surface, and then unloaded. A laser texturing device 13, a cleaning device 14, and a printing and curing device 15 arranged sequentially on the conveyor line 11 can respectively perform laser texturing treatment, cleaning, and coating of a photocurable material with insulating properties on the surface of the cylindrical battery cells. The photocurable material is then cured by ultraviolet light to form an insulating layer. The connection strength, adhesion, and insulation performance of this insulating layer and the cylindrical battery cell all meet the requirements of battery use, effectively solving the defects of poor adhesion and withstand voltage performance of the blue film battery cells on the surface of existing technologies.

[0045] Specifically, in some embodiments, such as Figure 1 As shown, the printing and curing equipment 15 includes a printing pre-curing device 151 and a final curing device 152 arranged sequentially along the conveying direction of the conveyor line 11. The printing pre-curing device 151 is used to perform UV printing and pre-curing on the surface of the cylindrical battery cell to form an insulating layer. The final curing device 152 is used to cure the insulating layer on the surface of the cylindrical battery cell.

[0046] In this embodiment, the printing curing device 15 can spray a photocurable material onto the surface of a cylindrical battery cell and irradiate the surface with ultraviolet light so that the photocurable material on the surface of the cylindrical battery cell is initially cured to form an insulating layer. After the initially cured insulating layer is formed on the surface of the cylindrical battery cell, the cylindrical battery cell is transported to the final curing device 152. The final curing device 152 is used to further irradiate the insulating layer with ultraviolet light so that the insulating layer is completely cured and more stably and firmly attached to the surface of the cylindrical battery cell.

[0047] Specifically, such as Figure 1 As shown, the printing pre-curing equipment 151 includes an end-face printing device 1511 and a cylindrical printing device 1512. The end-face printing device 1511 is used to perform UV printing and pre-curing on the two end faces of the cylindrical battery cell to form an insulating layer. The cylindrical printing device 1512 is used to perform UV printing and pre-curing on the cylindrical surfaces of the cylindrical battery cell to form an insulating layer.

[0048] It is understood that cylindrical battery cells typically have two end faces and a cylindrical surface. This embodiment uses an end face printing device 1511 specifically for UV printing and pre-curing the two end faces of the cylindrical battery cell, and a cylindrical surface printing device 1512 specifically for UV printing and pre-curing the two end faces of the cylindrical battery cell. By performing UV printing and pre-curing on each surface of the cylindrical battery cell at different stations and using different devices, more precise control over the UV printing and pre-curing processes on different surfaces can be achieved. This also helps to shorten the time of individual processes, allowing each process to better meet the production cycle of the entire production line.

[0049] In some embodiments, such as Figure 1 As shown, the end-face printing device 1511 includes a first flipping mechanism 15111, a first printing pre-curing mechanism 15112, a second flipping mechanism 15113, and a second printing pre-curing mechanism 15114, arranged sequentially along the conveying direction of the conveyor line 11. The first flipping mechanism 15111 flips the cylindrical battery cell so that one end face of the cylindrical battery cell faces upwards. The first printing pre-curing mechanism 15112 performs UV printing and pre-curing on this end face to form an insulating layer. The second flipping mechanism 15113 flips the cylindrical battery cell so that the other end face of the cylindrical battery cell faces upwards. The second printing pre-curing mechanism 15114 performs UV printing and pre-curing on this other end face to form an insulating layer.

[0050] In this embodiment, the cylindrical battery cell passes sequentially along the conveyor line 11 through a first flipping mechanism 15111, a first printing pre-curing mechanism 15112, a second flipping mechanism 15113, and a second printing pre-curing mechanism 15114. The first flipping mechanism 15111 flips the cylindrical battery cell so that one cross-section of the cylindrical battery cell faces upwards, allowing the first printing pre-curing mechanism 15112 to process this end face. After an insulating layer is formed on this end face, the cylindrical battery cell passes through the second flipping mechanism 15113, which rotates the cylindrical battery cell 180 degrees around a horizontal axis, so that the other unprocessed end face faces upwards, allowing the second printing pre-curing mechanism 15114 to process this other end face. Finally, an insulating layer is formed on both ends of the cylindrical battery cell.

[0051] Specifically, such as Figure 1 As shown, the cylindrical printing apparatus 1512 includes a third flipping mechanism 15121, a first rotating mechanism 15122, and a third printing pre-curing mechanism 15123. The third flipping mechanism 15121 is used to flip the cylindrical battery cell so that the central axis of the cylindrical battery cell extends horizontally and is perpendicular to the conveying direction of the conveyor line 11. The first rotating mechanism 15122 is respectively disposed on both sides of the conveyor line 11 for clamping and rotating the cylindrical battery cell. The third printing pre-curing mechanism 15123 is disposed on the conveyor line 11 at a position corresponding to the first rotating mechanism 15122, for performing UV printing and pre-curing on the cylindrical surface of the cylindrical battery cell to form an insulating layer.

[0052] In this embodiment, the cylindrical battery cell passes sequentially through the third flipping mechanism 15121 and the first rotating mechanism 15122. The third flipping mechanism 15121 is used to flip the cylindrical battery cell to adjust its posture on the conveyor line 11, so that the two end faces of the cylindrical battery cell face the two sides of the conveyor line 11 respectively. When the cylindrical battery cell passes through the first rotating mechanism 15122, the first rotating mechanism 15122, which is located on both sides of the conveyor line 11, can clamp the cylindrical battery cell from both ends and make the cylindrical battery cell rotate around its own central axis. The third printing and pre-curing mechanism 15123 faces the rotating cylindrical battery cell so as to spray and pre-cur the cylindrical surface of the cylindrical battery cell, thereby forming an insulating layer on the cylindrical surface.

[0053] In some embodiments, such as Figure 1As shown, the laser texturing equipment 13 includes a second rotating mechanism 131, a first laser 132, a second laser 133, and a third laser 134. The second rotating mechanism 131 is respectively disposed on both sides of the conveyor line 11 and is used to clamp and rotate the cylindrical battery cell. The first laser 132 is disposed on the conveyor line 11 at a position corresponding to the second rotating mechanism 131 and is used to laser texturize the cylindrical surface of the cylindrical battery cell. The second laser 133 and the third laser 134 are disposed on the side of the conveyor line 11. The second laser 133 is used to laser texturize one end face of the cylindrical battery cell and the other end face of the cylindrical battery cell.

[0054] In this embodiment, the first laser 132, the second laser 133, and the third laser 134 are used to laser roughen the cylindrical surface and two end faces of the cylindrical battery cell, respectively, so that the surface roughness of the cylindrical battery cell meets the requirements of UV printing and strengthens the bonding strength between the cylindrical battery cell surface and the insulating layer. Specifically, the first laser 132 and the second rotating mechanism 131 are located at the same station. When the cylindrical battery cell passes through the first laser 132 and the second rotating mechanism 131, the second rotating mechanism 131 clamps the cylindrical battery cell from both ends and drives it to rotate around its own central axis. The first laser 132 then laser roughens the entire cylindrical surface of the cylindrical battery cell during the rotation process. The second laser 133 and the third laser 134 are arranged on the side of the conveyor line 11 so that the two end faces of the cylindrical battery cell are laser roughened as the cylindrical battery cell passes by.

[0055] Understandably, depending on the overall layout of the production line and production needs, the second laser 133 and the third laser 134 can be located on opposite sides or on the same side of the conveyor line 11. For example, the second laser 133 can be located on one side of the conveyor line 11, and the third laser 134 can be located on the other side. When passing the second laser 133 and the third laser 134, the cylindrical battery cell only needs to maintain a horizontal position with its two end faces facing opposite sides of the conveyor line 11, without needing to adjust the posture of the cylindrical battery cell.

[0056] Alternatively, the second laser 133 and the third laser 134 can be located on the same side of the conveyor line 11. A flipping mechanism needs to be added between the second laser 133 and the third laser 134. The cylindrical battery cell passes through the second laser 133, the flipping mechanism and the third laser 134 in sequence. The second laser 133 performs laser texturing on one end face of the cylindrical battery cell. The flipping mechanism rotates the cylindrical battery cell 180 degrees around the vertical axis so that the third laser 134 can perform laser texturing on the other end face of the cylindrical battery cell.

[0057] In some embodiments, such as Figure 1As shown, the cleaning equipment 14 includes a third rotating mechanism 141, a first plasma cleaner 142, and a second plasma cleaner 143. The third rotating mechanism 141 is respectively disposed on both sides of the conveyor line 11 and is used to clamp and rotate the cylindrical battery cell. The first plasma cleaner 142 is disposed on the conveyor line 11 at a position corresponding to the third rotating mechanism 141 and is used to perform plasma cleaning on the cylindrical surface of the cylindrical battery cell. The second plasma cleaner 143 is respectively disposed on both sides of the conveyor line 11 and is used to perform plasma cleaning on the two end faces of the cylindrical battery cell.

[0058] In this embodiment, the first plasma cleaner 142 and the second plasma cleaner 143 are used to perform plasma cleaning on the cylindrical surface and two end faces of the cylindrical battery cell, respectively, to remove impurities remaining on the surface of the cylindrical battery cell after laser texturing. Specifically, the first plasma cleaner 142 and the third rotating mechanism 141 are located at the same station. When the cylindrical battery cell passes through the first plasma cleaner 142 and the third rotating mechanism 141, the third rotating mechanism 141 clamps the cylindrical battery cell from both ends and drives it to rotate around its own central axis. The first plasma cleaner 142 performs plasma cleaning on the entire cylindrical surface of the cylindrical battery cell during the rotation process. The second plasma cleaner 143 is arranged on the side of the conveyor line 11 so as to perform plasma cleaning on the two end faces of the cylindrical battery cell when it passes by. For example, the second plasma cleaner 143 has two cleaning mechanisms arranged opposite to each other, one of which 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 cylindrical battery cell passes through the second plasma cleaner 143, the two cleaning mechanisms respectively emit plasma to the two end faces of the cylindrical battery cell to clean the two end faces.

[0059] In some embodiments, such as Figure 1 As shown, the cylindrical battery cell texturing and cleaning spraying system 1 also includes a defect detection device 17, which is located between the printing and curing device 15 and the battery cell unloading device 16. The defect detection device 17 is used to detect defects in the insulation layer.

[0060] In this embodiment, a defect detection device 17 is installed at a subsequent station of the printing and curing equipment 15. After a cured insulating layer is formed on the surface of the cylindrical battery cell, it is transported to the defect detection device 17 by the conveyor line 11. The defect detection device 17 can detect whether there are defects on the insulating layer. It is understood that the defect detection device 17 can communicate with the monitoring system of the entire production line so that it can report to the monitoring system when an insulating 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 insulating layer defect is detected, so as to remind production personnel to process and rework the cylindrical battery cells with defects.

[0061] Understandably, both the final curing device 152 and the defect detection device 17 are equipped with mechanisms for rotating the cylindrical battery cell, so as to cure or detect defects on each surface of the cylindrical battery cell during the rotation of the cylindrical battery cell.

[0062] Furthermore, in some embodiments, such as Figure 1 As shown, the cylindrical battery cell texturing and cleaning spraying system 1 also includes a withstand voltage testing device 18, which is located between the defect detection device 17 and the battery cell unloading device 16. The withstand voltage testing device 18 is used to test the withstand voltage performance of the insulation layer.

[0063] In this embodiment, after the insulation layer on the surface of the cylindrical battery cell is completely cured and the defect detection is qualified, the conveyor line 11 will transfer the cylindrical battery cell to the withstand voltage testing equipment 18. The withstand voltage testing equipment 18 will perform a withstand voltage test on the insulation layer of the cylindrical battery cell to determine whether the withstand voltage performance of the insulation layer meets the product standard.

[0064] In one specific embodiment, such as Figure 1 As shown, the conveyor line 11 includes a feeding buffer line 111 and two double-layer reflow processing lines 112 arranged along the conveying direction.

[0065] The feeding buffer line 111 is equipped with a battery cell feeding device 12, a barcode scanner, a second laser 133, and a transfer device in sequence along the conveying direction. The battery cell feeding device 12 is used to transfer cylindrical battery cells in a flat state to the tray of the feeding buffer line 111 (in the flat state, the central axis of the cylindrical battery cell extends horizontally and is perpendicular to the conveying direction of the conveying line 11). The barcode scanner is used to scan the identification code on the cylindrical battery cell to facilitate monitoring of the production process. The second laser 133 is used to laser roughen one end face of the cylindrical battery cell. The transfer device is used to transfer the cylindrical battery cells in a flat state to two processing lines respectively.

[0066] The starting ends of the two double-layer reflow processing lines 112 are located on both sides of the ending end of the feeding buffer line 111. Each double-layer reflow processing line 112 includes a first part, a second part, and a third part along the conveying direction.

[0067] The first part is provided with a second rotating mechanism 131, a first laser 132 (located at the same station as the second rotating mechanism 131), a third laser 134, a cleaning device 14, and a first flipping mechanism 15111 in sequence along the conveying direction. The first flipping mechanism 15111 is used to flip the cylindrical battery cell from a flat state to a standing state (i.e., the central axis of the cylindrical battery cell is in the vertical direction and one end face is facing upward). For example, a cup adapted to the standing state of the cylindrical battery cell can be provided on the tray to accommodate and limit the cylindrical battery cell in the standing state.

[0068] The second part is provided with a first printing pre-curing mechanism 15112, a second flipping mechanism 15113, a second printing pre-curing mechanism 15114, and a third flipping mechanism 15121 arranged sequentially along the conveying direction. The first printing pre-curing mechanism 15112 and the second printing pre-curing mechanism 15114 are used to perform UV printing and pre-curing on the two end faces of the cylindrical battery cell. The second flipping mechanism 15113 is used to flip the cylindrical battery cell between the two printing mechanisms so that the upper and lower end faces are reversed. The third flipping mechanism 15121 is used to flip the cylindrical battery cell from the standing state back to the flat state.

[0069] The third part, along the conveying direction, includes a final curing device 152, a coding device, a defect detection device 17, a withstand voltage testing device 18, and a cell unloading device 16. Among them, the coding device is used to spray identification codes on the surface of the insulation layer so that the corresponding scanning device can determine the relevant information of the corresponding cylindrical cell (model, production batch, processing time, etc.) through the identification code.

[0070] Specifically, in some embodiments, each double-layer reflow processing line 112 includes a first line, a second line, and two transfer mechanisms. The first and second lines are arranged vertically. One of the two transfer mechanisms is located at one end of the first and second lines, and the other is located at the other end of the first and second lines. The first line is used to transport a tray containing cylindrical battery cells from the loading end to the unloading end, and the second line is used to transport the tray from the unloading end to the loading end; the transfer mechanisms are used to transfer the tray between the first and second lines.

[0071] Understandably, when processing the surface of cylindrical battery cells, the orientation of the cells needs to be adjusted several times. Sometimes, the cells need to be placed flat. To prevent the cells from rolling, they need to be placed on a tray with a limiting structure (such as limiting protrusions or limiting grooves) adapted to the cells. The tray and the cylindrical cells are then transported as a whole by the conveyor line 11. In this embodiment, the first line, the second line, and the two transport mechanisms form a tray rotation line, allowing the tray to be circulated and reused on the conveyor line 11. Specifically, the cell loading equipment 12 places the cylindrical cells to be processed into a tray at the loading end of the conveyor line 11. The tray is transported by the first line to the unloading end and passes through various processing equipment in sequence during the transportation process so that an insulating layer can be formed on the surface of the cylindrical cells. After arriving at the unloading end, the cell unloading equipment 16 transfers the cylindrical cells on the tray away. The transfer mechanism at the unloading end transfers the empty tray to the second line. The second line transports the tray back to the loading end. Another transfer mechanism at the loading end transfers the empty tray back to the first line for loading the next batch of cylindrical cells.

[0072] Optionally, depending on production needs, the second laser 133 and the third laser 134 can also be simultaneously installed on the feeding buffer line 111 or the double-layer reflow processing line 112.

[0073] It is understood that the equipment in this application that needs to adjust the position or posture of the cylindrical battery cell (such as the battery cell loading equipment 12, the first rotating mechanism 15122, the second rotating mechanism 131, the first flipping mechanism 15111, the second flipping mechanism 15113, the third flipping mechanism 15121, and the battery cell unloading equipment 16, etc.) may include a robotic arm, or may include a bracket and a battery cell clamp that is movably mounted on the bracket, so as to hold the cylindrical battery cell and flip or transfer the cylindrical battery cell.

[0074] 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 cylindrical battery cell texturing, cleaning, and spraying system, characterized in that, include: A conveyor line for transporting the cylindrical battery cells; A battery cell loading device is installed at the loading end of the conveyor line to transfer the cylindrical battery cells to the conveyor line; A laser texturing device, a cleaning device, and a printing and curing device are sequentially arranged along the conveying direction of the conveyor line; the laser texturing device is used to laser texturize the surface of the cylindrical battery cell; the cleaning device is used to clean the surface of the cylindrical battery cell. The printing and curing equipment is used to UV print and cure the surface of the cylindrical battery cell to form an insulating layer. A cell unloading device is installed at the unloading end of the conveyor line to transfer the cylindrical cells off the line.

2. The cylindrical battery cell texturing, cleaning, and spraying system according to claim 1, characterized in that, The printing and curing equipment includes a printing pre-curing equipment and a final curing equipment arranged sequentially along the conveying direction of the conveyor line. The printing pre-curing equipment is used to perform UV printing and pre-curing on the surface of the cylindrical battery cell to form an insulating layer. The final curing equipment is used to cure the insulating layer on the surface of the cylindrical battery cell.

3. The cylindrical battery cell texturing, cleaning, and spraying system according to claim 2, characterized in that, The printing and pre-curing equipment includes an end-face printing device and a cylindrical printing device; the end-face printing device is used to perform UV printing and pre-curing on the two end faces of the cylindrical battery cell to form an insulating layer; the cylindrical printing device is used to perform UV printing and pre-curing on the cylindrical surface of the cylindrical battery cell to form an insulating layer.

4. The cylindrical battery cell texturing, cleaning, and spraying system according to claim 3, characterized in that, The end face printing device includes a first flipping mechanism, a first printing pre-curing mechanism, a second flipping mechanism, and a second printing pre-curing mechanism arranged sequentially along the conveying direction of the conveyor line; The first flipping mechanism is used to flip the cylindrical battery cell so that one end face of the cylindrical battery cell faces upward; the first printing and pre-curing mechanism is used to perform UV printing and pre-curing on the end face to form an insulating layer. The second flipping mechanism is used to flip the cylindrical battery cell so that the other end face of the cylindrical battery cell faces upward; the second printing and pre-curing mechanism is used to perform UV printing and pre-curing on the other end face to form an insulating layer.

5. The cylindrical battery cell texturing, cleaning, and spraying system according to claim 3, characterized in that, The cylindrical printing device includes a third flipping mechanism, a first rotating mechanism, and a third printing pre-curing mechanism; The third flipping mechanism is used to flip the cylindrical battery cell so that the central axis of the cylindrical battery cell extends horizontally and is perpendicular to the conveying direction of the conveying line; The first rotating mechanism is respectively disposed on both sides of the conveyor line for clamping and rotating the cylindrical battery cell; the third printing and pre-curing mechanism is disposed on the conveyor line at the position corresponding to the first rotating mechanism for performing UV printing and pre-curing on the cylindrical surface of the cylindrical battery cell to form an insulating layer.

6. The cylindrical battery cell texturing, cleaning, and spraying system according to claim 1, characterized in that, The laser texturing device includes a second rotating mechanism, a first laser, a second laser, and a third laser; The second rotating mechanism is respectively disposed on both sides of the conveyor line, and is used to clamp the cylindrical battery cell and rotate it; The first laser is positioned on the conveyor line at a position corresponding to the second rotating mechanism, and is used to laser roughen the cylindrical surface of the cylindrical battery cell; The second laser and the third laser are disposed on the side of the conveyor line. The second laser is used to laser roughen one end face of the cylindrical battery cell, and the second laser is used to laser roughen the other end face of the cylindrical battery cell.

7. The cylindrical battery cell texturing, cleaning, and spraying system according to claim 1, characterized in that, The cleaning equipment includes a third rotating mechanism, a first plasma cleaner, and a second plasma cleaner. The third rotating mechanism is respectively disposed on both sides of the conveyor line for clamping and rotating the cylindrical battery cell; the first plasma cleaner is disposed on the conveyor line at the position corresponding to the third rotating mechanism for plasma cleaning the cylindrical surface of the cylindrical battery cell. The second plasma cleaner is respectively installed on both sides of the conveyor line and is used to perform plasma cleaning on the two end faces of the cylindrical battery cell.

8. The cylindrical battery cell texturing, cleaning, and spraying system according to claim 1, characterized in that, It also includes a defect detection device, which is disposed between the printing and curing device and the cell feeding device, and is used to detect defects in the insulation layer.

9. The cylindrical battery cell texturing, cleaning, and spraying system according to claim 8, characterized in that, It also includes a withstand voltage testing device, which is disposed between the defect detection device and the cell cutting device, and is used to test the withstand voltage performance of the insulation layer.

10. The cylindrical battery cell texturing, cleaning, and spraying system according to any one of claims 1 to 9, characterized in that, The conveyor line includes a first line body, a second line body, and two transfer mechanisms; The first and second production lines are arranged vertically; one of the two transfer mechanisms is located at one end of the first and second production lines, and the other is located at the other end of the first and second production lines; the first production line is used to transport a tray containing cylindrical battery cells from the loading end to the unloading end, and the second production line is used to transport the tray from the unloading end to the loading end; the transfer mechanism is used to transfer the tray between the first and second production lines.

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