Laser ear tab forming device and laser ear tab forming machine

Abstract

The utility model discloses a laser cutting tab forming device and laser cutting tab forming machine relates to battery manufacturing technical field, and this laser cutting tab forming device includes feed over roller, discharge over roller, negative pressure adsorption component, first laser and second laser, and negative pressure adsorption component has a negative pressure chamber, and one side of negative pressure chamber forms negative pressure adsorption surface, and first laser and second laser set up at the same side of negative pressure adsorption surface, and wherein, negative pressure adsorption surface includes independent coating adsorption area and tab adsorption area. Compared with prior art, the utility model simplifies the over roller structure in the middle, reduces the number of design parts, reduces the debugging difficulty, reduces the overall space occupation. And negative pressure adsorption surface is divided into independent coating adsorption area and tab adsorption area, can carry out independent partition control to the different area of pole piece, guarantees the cutting stability, can reduce the risk of tab scratching or damage, improves the quality safety of battery cell.

Description

Technical Field

[0001] This utility model relates to the field of battery manufacturing technology, and more specifically, to a laser tab cutting forming device and a laser tab cutting forming machine. Background Technology

[0002] In current high-speed laser cutting equipment for lithium battery electrodes, two laser cutting actions are typically used. The electrode first passes through two rollers to cut the top of the electrode tab, and then through two more rollers to cut the root of the electrode tab. Therefore, four rollers are needed to complete the electrode tab forming process, requiring two sets of corresponding cavity assemblies. Because its structure is divided into upper and lower parts, the number of variables in the process increases, making equipment debugging more difficult, and ensuring a consistent benchmark is challenging. Furthermore, the machine occupies a significant amount of space.

[0003] Furthermore, conventional dual-laser suspended cutting mechanisms cannot effectively attract and guide the electrodes and tabs, which can easily cause scratches or damage to the tabs, affecting the quality and safety of the battery cells. Utility Model Content The purpose of this utility model is to provide a laser tab cutting forming device and a laser tab cutting forming machine, which can simplify the structure, reduce the number of design parts, reduce debugging difficulty, reduce the overall space occupied, and at the same time reduce the risk of tab scratches or damage, thereby improving the quality and safety of the battery cell.

[0004] The embodiments of this utility model are implemented as follows: In one aspect, this utility model provides a laser-cut tab forming apparatus, comprising: The feed roller is configured as the input electrode. The discharge rollers are spaced below the feed rollers and configured as output electrodes; A negative pressure adsorption assembly is disposed at least between the feed roller and the discharge roller, and has a negative pressure chamber, wherein a negative pressure adsorption surface is formed on one side of the negative pressure chamber, and the negative pressure adsorption surface is configured to adsorb the electrode sheet. A first laser and a second laser are sequentially arranged on the same side of the negative pressure adsorption surface along the conveying direction of the electrode sheet. The first laser corresponds to the top side of the negative pressure adsorption surface and is configured to cut the top of the electrode tab. The second laser corresponds to the bottom side of the negative pressure adsorption surface and is configured to cut the bottom of the electrode tab. The negative pressure adsorption surface includes an independent coating adsorption area and a tab adsorption area. The coating adsorption area is configured to adsorb the coating area of ​​the electrode sheet, and the tab adsorption area is configured to adsorb the tabs of the electrode sheet and the waste material after cutting.

[0005] In an optional embodiment, the negative pressure adsorption assembly includes an adsorption body, an adsorption base plate, and an adsorption belt. The adsorption body is provided with a negative pressure chamber and is connected to the negative pressure pipeline. The adsorption belt and the adsorption base plate are both disposed on the adsorption body and located on one side of the negative pressure chamber. The adsorption belt is located in the tab adsorption area and is configured to adsorb and transport the electrode and the waste. The adsorption base plate is located in the coating adsorption area and is configured to adsorb the coating area of ​​the electrode.

[0006] In an optional embodiment, the negative pressure adsorption assembly further includes a negative pressure insert plate disposed on the adsorption body and configured to adjust the negative pressure adsorption force of the adsorption belt.

[0007] In an optional embodiment, the laser-cut electrode forming device further includes a first support seat and a second support seat spaced apart between the feed roller and the discharge roller. The first support seat is provided with a first transmission channel for the electrode sheet to pass through, and the second support seat is provided with a second transmission channel for the electrode sheet to pass through. The first support seat corresponds to the first laser, and the second support seat corresponds to the second laser. The coating adsorption area is located between the first transmission channel and the second transmission channel, and the electrode adsorption area extends from the gap area between the first transmission channel and the second transmission channel to the second transmission channel.

[0008] In an optional embodiment, the first support is further provided with a first laser heat sink, which is located on the side of the first transmission channel away from the first laser, and is used to reflect and attenuate the laser emitted by the first laser. The second support is also provided with a second laser heat sink, which is located on the side of the second transmission channel away from the second laser, and is used to reflect and attenuate the laser emitted by the second laser.

[0009] In an optional embodiment, the laser cutting tab forming device further includes a dust removal component, which includes a first front air knife, a first rear air knife, a second front air knife, and a second rear air knife. The first front air knife and the first rear air knife are disposed opposite to each other on the first support, and the first front air knife is located on the side of the first transmission channel closer to the first laser, while the first rear air knife is located on the side of the first transmission channel away from the first laser. The second front air knife and the second rear air knife are disposed opposite to each other on the second support, with the second front air knife located on the side of the second transmission channel closer to the second laser and the second rear air knife located on the side of the second transmission channel away from the second laser.

[0010] In an optional embodiment, the dust removal assembly further includes a first negative pressure adsorption pipe and a second negative pressure adsorption pipe. The first negative pressure adsorption pipe is disposed on the side of the first support and corresponds to the first transmission channel; the second negative pressure adsorption pipe is disposed on the side of the second support and corresponds to the second transmission channel.

[0011] In an optional embodiment, the laser-cut electrode forming device further includes a wire fixing roller group, which includes a wire fixing double support roller, a wire fixing roller, and a movable roller. The wire fixing double support roller and the wire fixing roller are respectively disposed at the inlet end and the outlet end of the second transmission channel. The movable roller is movably disposed at the inlet end of the second transmission channel, and the movable roller is correspondingly disposed with the wire fixing double support roller and configured to roll against both sides of the electrode sheet.

[0012] In an optional embodiment, the laser-cut electrode forming device further includes a feeding pressure roller group, which includes a feeding pressure roller and a feeding support roller. The feeding pressure roller and the feeding support roller are both located at the feeding end of the first transmission channel, and the feeding pressure roller and the feeding support roller are correspondingly arranged and configured to roll against the two sides of the electrode sheet.

[0013] Secondly, this utility model embodiment also provides a laser tab cutting forming machine, including the aforementioned laser tab cutting forming device.

[0014] The beneficial effects of this utility model embodiment include: The laser-cut electrode tab forming apparatus provided in this embodiment of the invention includes a negative pressure adsorption component between the feed roller and the discharge roller. This negative pressure adsorption component has a negative pressure chamber and a negative pressure adsorption surface, capable of adsorbing the electrode sheet. The first laser and the second laser are positioned on the same side of the negative pressure adsorption surface in a vertical direction, respectively completing the cutting of the top and bottom of the electrode tab. Furthermore, the negative pressure adsorption surface includes independent coating adsorption areas and electrode tab adsorption areas. The coating adsorption area can adsorb the coated area of ​​the electrode sheet individually, and the electrode tab adsorption area can adsorb the electrode tab foil area of ​​the electrode sheet individually, i.e., adsorbing the electrode tab and waste material separately.

[0015] Compared to existing technologies, this invention employs a dual-laser structure with a single-cavity, dual-roller configuration, simplifying the intermediate roller structure, reducing the number of design parts, and lowering debugging difficulty. This allows for a more compact arrangement of the first and second lasers, reducing the overall space required. Furthermore, the negative pressure adsorption surface of the negative pressure adsorption component adsorbs the electrode sheets between the infeed and outlet rollers, ensuring electrode stability. The negative pressure adsorption surface is divided into independent coating adsorption areas and tab adsorption areas, enabling independent zone control of different areas of the electrode sheet. This ensures cutting stability while reducing the risk of waste material scraping during tab cutting, thus minimizing the risk of tab scraping or damage and improving cell quality and safety. Attached Figure Description

[0016] To more clearly illustrate the technical solutions of the embodiments of this utility model, the drawings used in the embodiments will be briefly introduced below. It should be understood that the following drawings only show some embodiments of this utility model and should not be regarded as a limitation on the scope. For those skilled in the art, other related drawings can be obtained based on these drawings without creative effort.

[0017] Figure 1 A schematic diagram of the overall structure of the laser tab forming device provided in an embodiment of this utility model from a first-view perspective; Figure 2 for Figure 1 Schematic diagram of the structure of the medium negative pressure adsorption component; Figure 3 A partial structural schematic diagram of the laser-cut electrode forming device provided in an embodiment of this utility model; Figure 4 A schematic diagram of the overall structure of the laser tab forming device provided in an embodiment of this utility model from a second perspective; Figure 5 A schematic diagram of the overall structure of the laser-cut tab forming device provided in this embodiment of the present invention from a third-person perspective.

[0018] icon: 100-Laser-cut electrode forming device; 110-Feeding roller; 120-Discharge roller; 130-Negative pressure adsorption assembly; 131-Negative pressure chamber; 132-Negative pressure adsorption surface; 133-Adsorption body; 134-Adsorption base plate; 135-Adsorption belt; 136-Negative pressure insert plate; 140-First laser; 150-Second laser; 160-First support; 161-First transmission channel; 162-First laser heat sink; 170-Second support; 171- Second transmission channel; 172-Second laser heat sink; 180-Dust removal assembly; 181-First front air knife; 182-First rear air knife; 183-Second front air knife; 184-Second rear air knife; 185-First negative pressure adsorption pipe; 186-Second negative pressure adsorption pipe; 190a-Material line fixing roller group; 190b-Feeding pressure roller group; 191-Material line fixing double support roller; 192-Material line fixing roller; 193-Modible roller; 194-Feeding pressure roller; 195-Feeding support roller. Detailed Implementation

[0019] To make the objectives, technical solutions, and advantages of the embodiments of this utility model clearer, the technical solutions of the embodiments 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, and not all embodiments. The components of the embodiments of this utility model described and shown in the accompanying drawings can generally be arranged and designed in various different configurations.

[0020] Therefore, the following detailed description of the embodiments of the present invention provided in the accompanying drawings is not intended to limit the scope of the claimed invention, but merely to illustrate selected embodiments of the invention. All other embodiments obtained by those skilled in the art based on the embodiments of the present invention without inventive effort are within the scope of protection of the present invention.

[0021] It should be noted that similar labels and letters in the following figures indicate similar items. Therefore, once an item is defined in one figure, it does not need to be further defined and explained in subsequent figures.

[0022] In the description of this utility model, it should be noted that the terms "center," "upper," "lower," "left," "right," "vertical," "horizontal," "inner," and "outer," etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings, or the orientation or positional relationship commonly used when the product of this utility model is in use. They are only for the convenience of describing this utility model and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this utility model. In addition, the terms "first," "second," and "third," etc., are only used to distinguish descriptions and should not be construed as indicating or implying relative importance.

[0023] Furthermore, terms such as "horizontal" and "vertical" do not imply that components must be absolutely horizontal or suspended, but rather that they can be slightly tilted. For example, "horizontal" simply means that its direction is more horizontal than "vertical," and does not mean that the structure must be completely horizontal, but can be slightly tilted.

[0024] In the description of this utility model, it should also be noted that, unless otherwise explicitly specified and limited, the terms "set," "install," "connect," and "link" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; and they can refer to the internal connection of two components. Those skilled in the art can understand the specific meaning of the above terms in this utility model based on the specific circumstances.

[0025] As disclosed in the background section, existing dual-laser suspended cutting structures typically employ a four-roller structure to ensure structural stability, meaning the two laser cutting processes are completely independent. Therefore, two sets of corresponding cavity components are required. Furthermore, the structure is divided into upper and lower parts, resulting in overall complexity, increased debugging variables, and greater difficulty in ensuring consistent reference standards. Additionally, the overall machine space is substantial. In other words, conventional dual-laser cutting structures have high structural redundancy, numerous debugging variables, and require independent adjustment of the upper and lower laser component cutting cavities due to the introduction of two completely independent cavity structures, leading to significant debugging difficulties. Moreover, the complex structure, numerous types and total number of parts, and many part reference standards result in poor maintainability.

[0026] In addition, the waste generated by the tabs during the cutting process is difficult to control. Conventional dual-laser suspended cutting structures cannot effectively adsorb and guide the waste, which can easily lead to problems such as tab scratches and tab breakage, affecting the quality and safety of the battery cells.

[0027] To address the aforementioned problems, this utility model provides a novel laser tab forming device and laser tab forming machine. The basic structure and working principle of the device are described in detail below.

[0028] See Figures 1 to 5 The laser-cut tab forming device 100 provided in this embodiment of the utility model can simplify the structure, reduce the number of design parts, reduce the debugging difficulty, reduce the overall space occupied, and at the same time reduce the risk of tab scratches or damage, thus improving the quality and safety of the battery cell.

[0029] This utility model provides a laser-cut electrode forming device 100, including a feeding roller 110, a discharging roller 120, a negative pressure adsorption assembly 130, a first laser 140, and a second laser 150. The feeding roller 110 is configured as an input electrode; the discharging roller 120 is spaced below the feeding roller 110 and configured as an output electrode; the negative pressure adsorption assembly 130 is at least disposed between the feeding roller 110 and the discharging roller 120, and has a negative pressure chamber 131, with a negative pressure adsorption surface 132 formed on one side of the negative pressure chamber 131. The electrode is set as an adsorption electrode. The first laser 140 and the second laser 150 are sequentially arranged on the same side of the negative pressure adsorption surface 132 along the conveying direction of the electrode. The first laser 140 is corresponding to the top side of the negative pressure adsorption surface 132 and is configured to complete the cutting of the top of the electrode tab. The second laser 150 is corresponding to the bottom side of the negative pressure adsorption surface 132 and is configured to complete the cutting of the bottom of the electrode tab. The negative pressure adsorption surface 132 includes an independent coating adsorption area and an electrode tab adsorption area. The coating adsorption area is configured to adsorb the coating area of ​​the electrode and the electrode tab adsorption area is configured to adsorb the electrode tab and the waste material after cutting.

[0030] It should be noted that the negative pressure adsorption component 130 is connected to an external negative pressure pipe, which can directly connect to the negative pressure chamber 131, thereby forming a negative pressure space within the negative pressure chamber 131, and then achieving adsorption of the electrode tabs through the negative pressure adsorption surface 132. The negative pressure adsorption surface 132 can make contact with the electrode surface through surface openings; the specific negative pressure adsorption principle can refer to existing negative pressure adsorption structures. The distance between the first laser 140 and the second laser 150 and the electrode can be adjusted using a focusing module.

[0031] It is worth noting that in this embodiment of the invention, a negative pressure adsorption assembly 130 is provided between the feed roller 110 and the discharge roller 120. This assembly has a negative pressure chamber 131 and a negative pressure adsorption surface 132, capable of adsorbing the electrode sheet. The first laser 140 and the second laser 150 are positioned vertically on the same side of the negative pressure adsorption surface 132, respectively cutting the top and bottom of the electrode tabs. Furthermore, the negative pressure adsorption surface 132 includes independent coating adsorption areas and electrode tab adsorption areas. The coating adsorption area can adsorb the coating area of ​​the electrode sheet individually, while the electrode tab adsorption area can adsorb the electrode tab foil area of ​​the electrode sheet individually, i.e., adsorbing the electrode tabs and waste material separately. Therefore, this embodiment of the invention adopts a double-roller structure, simplifying the intermediate roller structure, reducing the number of design parts, lowering the debugging difficulty, and allowing the first laser 140 and the second laser 150 to be arranged more compactly, reducing the overall space occupied. Furthermore, the negative pressure adsorption surface 132 of the negative pressure adsorption component 130 adsorbs the electrode sheet between the feed roller 110 and the discharge roller 120, thereby keeping the electrode sheet stable. The negative pressure adsorption surface 132 is divided into an independent coating adsorption area and an electrode tab adsorption area, which can independently control different areas of the electrode sheet. This ensures cutting stability while reducing the risk of waste material scratching during electrode tab cutting, thereby reducing the risk of electrode tab scratching or damage and improving the quality and safety of the battery cell.

[0032] In some embodiments, the negative pressure adsorption assembly 130 includes an adsorption body 133, an adsorption base plate 134, and an adsorption belt 135. The adsorption body 133 has a negative pressure chamber 131 and is connected to an external negative pressure pipe. The adsorption belt 135 and the adsorption base plate 134 are both disposed on the adsorption body 133 and located on one side of the negative pressure chamber 131. The adsorption belt 135 is located in the tab adsorption area and is configured to adsorb and transport electrode sheets and waste materials. The adsorption base plate 134 is located in the coating adsorption area and is configured to adsorb the coating area of ​​the electrode sheets. Specifically, the adsorption belt 135 is a movable component, and at least a portion of its surface can form a tab adsorption area, which corresponds to the tab foil area of ​​the electrode sheet, thereby achieving the adsorption and transport of electrode sheets and waste materials. The adsorption base plate 134 is a fixing component that can adsorb the coating area of ​​the electrode, thereby making the middle area of ​​the electrode located between the feed roller 110 and the discharge roller 120 more stable and avoiding shaking or drifting.

[0033] It should be noted that the adsorption belt 135 here can be a flat belt, a round belt, a synchronous belt, or other types of belt conveyor, and is not limited to the structure shown in the figure in this application.

[0034] In some embodiments, the negative pressure adsorption assembly 130 further includes a negative pressure insert plate 136, which is disposed on the adsorption body 133 and configured to adjust the negative pressure adsorption force of the adsorption belt 135. Specifically, the negative pressure insert plate 136 can be a horizontal insert plate, through which the negative pressure adsorption force can be adjusted. Of course, there can be multiple negative pressure insert plates 136, which can adjust the negative pressure adsorption force at multiple points on the adsorption belt 135, providing better adjustment flexibility.

[0035] In some embodiments, the laser-cut electrode tab forming apparatus 100 further includes a first support 160 and a second support 170 spaced apart between the feed roller 110 and the discharge roller 120. The first support 160 is provided with a first transmission channel 161 for the electrode sheet to pass through, and the second support 170 is provided with a second transmission channel 171 for the electrode sheet to pass through. The first support 160 corresponds to the first laser 140, and the second support 170 corresponds to the second laser 150. The coating adsorption area is located between the first transmission channel 161 and the second transmission channel 171, and the electrode tab adsorption area extends from the gap area between the first transmission channel 161 and the second transmission channel 171 to the second transmission channel 171. Specifically, the top side of the adsorption belt 135 extends to the bottom end of the first transmission channel 161, and the bottom side of the adsorption belt 135 extends to the second transmission channel 171, thereby adsorbing and conveying the electrode tabs and waste material from the first transmission channel 161 to the second transmission channel 171.

[0036] It should be noted that a separation slope is also provided at the bottom end of the adsorption belt 135. This separation slope is inclined relative to the second transmission channel 171 and is far away from the discharge roller 120, which can separate the waste material and the electrode tabs. The waste material continues to be carried downward by the adsorption belt 135 to the waste recycling box, while the electrode tabs are output by the discharge roller 120 along with the electrode sheets. The junction of the separation slope and the second transmission channel 171 can also achieve wind speed control in different areas through multiple negative pressure plates 136. For example, different negative pressure plates 136 are used to achieve different negative pressure adsorption forces at positions such as controlling cutting stability, electrode tab separation, and waste adsorption.

[0037] In some embodiments, a first laser heat sink 162 is further provided on the first support 160. The first laser heat sink 162 is located on the side of the first transmission channel 161 away from the first laser 140, and is used to reflect and attenuate the laser emitted by the first laser 140. A second laser heat sink 172 is further provided on the second support 170. The second laser heat sink 172 is located on the side of the second transmission channel 171 away from the second laser 150, and is used to reflect and attenuate the laser emitted by the second laser 150. Specifically, both the first laser heat sink 162 and the second laser heat sink 172 can be heat sinks coated with light-absorbing material, which can reflect and attenuate excess laser light during cutting while achieving heat dissipation.

[0038] In some embodiments, the laser tab forming apparatus 100 further includes a dust removal assembly 180, which includes a first front air blade 181, a first rear air blade 182, a second front air blade 183, and a second rear air blade 184. The first front air blade 181 and the first rear air blade 182 are disposed opposite to each other on the first support 160, with the first front air blade 181 located on the side of the first transmission channel 161 closer to the first laser 140, and the first rear air blade 182 located on the side of the first transmission channel 161 away from the first laser 140. The second front air blade 183 and the second rear air blade 184 are disposed opposite to each other on the second support 170, with the second front air blade 183 located on the side of the second transmission channel 171 closer to the second laser 150, and the second rear air blade 184 located on the side of the second transmission channel 171 away from the second laser 150.

[0039] It should be noted that the first front air knife 181 and the first rear air knife 182 are located on both sides of the first transmission channel 161 and can blow air towards the edge of the first transmission channel 161. That is, the air blowing direction of the first front air knife 181 and the first rear air knife 182 is parallel to the electrode surface and blows towards the edge of the first transmission channel 161, so that the dust generated by cutting is blown out along the electrode tab and prevents the dust from falling into the coating area. Similarly, the air blowing direction of the second front air knife 183 and the second rear air knife 184 is parallel to the electrode surface and blows towards the edge of the second transmission channel 171.

[0040] Furthermore, the dust removal assembly 180 also includes a first negative pressure adsorption pipe 185 and a second negative pressure adsorption pipe 186. The first negative pressure adsorption pipe 185 is disposed on the side of the first support 160 and corresponds to the first transmission channel 161; the second negative pressure adsorption pipe 186 is disposed on the side of the second support 170 and corresponds to the second transmission channel 171. Specifically, the first negative pressure adsorption pipe 185 corresponds to the edge area of ​​the first transmission channel 161 and has a cover corresponding to the first front air knife 181 and the first rear air knife 182, so that the dust blown out by the first front air knife 181 and the first rear air knife 182 can flow towards the first negative pressure adsorption pipe 185 and be adsorbed by the first negative pressure adsorption pipe 185 to complete the dust removal action. Similarly, the second negative pressure adsorption pipe 186 can suck away the dust blown out by the second front air knife 183 and the second rear air knife 184 to complete the dust removal.

[0041] It should be noted that in this embodiment, the first negative pressure adsorption pipe 185 and the second negative pressure adsorption pipe 186 can also be designed as an integral structure, that is, negative pressure adsorption at both locations can be achieved through the same negative pressure cavity. Of course, in other preferred embodiments of this utility model, in order to improve integration, the negative pressure structure in the entire device can also be integrated into a single negative pressure cavity to achieve negative pressure adsorption. This structure will not be described in detail here.

[0042] In some embodiments, the laser-cut electrode forming apparatus 100 further includes a wire fixing roller group 190a, which includes a wire fixing double support roller 191, a wire fixing roller 192, and a movable roller 193. The wire fixing double support roller 191 and the wire fixing roller 192 are respectively disposed at the inlet end and the outlet end of the second transmission channel 171. The movable roller 193 is movably disposed at the inlet end of the second transmission channel 171, and is disposed corresponding to the wire fixing double support roller 191 and configured to roll against both sides of the electrode sheet.

[0043] Furthermore, the laser-cut electrode forming apparatus 100 also includes a feeding pressure roller group 190b, which includes a feeding pressure roller 194 and a feeding support roller 195. Both the feeding pressure roller 194 and the feeding support roller 195 are located at the feeding end of the first transmission channel 161, and are correspondingly arranged and configured to roll against both sides of the electrode sheet. It should be noted that the structural dimensions of the fixed double support roller, the material line fixing roller 192, the movable roller 193, the feeding pressure roller 194, and the feeding support roller 195 are much smaller than the structural dimensions of the feeding through roller 110 and the discharging through roller 120.

[0044] It should be noted that a negative pressure adsorption plate can also be designed on the first support 160. This negative pressure adsorption plate is evacuated through a separate negative pressure pipe. This negative pressure adsorption plate can adsorb the uncut electrode sheet, ensuring the electrode sheet stability during the first laser cutting.

[0045] The working process and principle of the laser-cut electrode tab forming device 100 are described below: The electrode sheet is fed into the feed roller 194 and feed support roller 195 through the feed roller 110 to achieve top support. Then, the electrode sheet is negatively adsorbed by the negative pressure adsorption plate. The first laser 140 is controlled by the encoder signal to complete the light output and cut the top of the electrode tab. The first front air knife 181 and the first rear air knife 182 guide the dust during the cutting process, and the first negative pressure adsorption pipe 185 with side suction completes the adsorption of dust. Excess laser light is reflected and attenuated by the first laser heat sink 162. The electrode sheet cut by the first laser 140 is adsorbed by the negative pressure adsorption surface 132. The coating area of ​​the electrode sheet is adsorbed by the coating adsorption area formed by the adsorption base plate 134 to ensure structural stability and ensure that the electrode tab can be attached to the electrode tab adsorption area. The electrode tab area of ​​the electrode sheet is adsorbed and transported by the electrode tab adsorption area formed by the surface of the adsorption belt 135, thereby transporting the electrode tab to the second transmission channel 171. The adsorption force of the adsorption belt 135 can be controlled by the negative pressure plate 136. The electrode then passes through the material line fixing double support roller 191 and the movable pressure roller before entering the second transmission channel 171. The coating area of ​​the electrode can be clamped by the material line fixing double support roller 191 and the material line fixing support roller to ensure the stability of the electrode during cutting by the second laser 150. The second laser 150 emits light by calculating the distance signal between the base points of the two lasers, completing the cutting of the bottom of the electrode tab. The second front air knife 183 and the second rear air knife 184 then guide the dust during the cutting process, and the dust is adsorbed through the second negative pressure adsorption pipe 186. Excess laser light is reflected and attenuated by the second laser heat sink 172.

[0046] This utility model embodiment also provides a laser tab forming machine, including a mounting frame and the aforementioned laser tab forming device 100. The laser tab forming device 100 includes a feeding roller 110, a discharging roller 120, a negative pressure adsorption assembly 130, a first laser 140, and a second laser 150. The feeding roller 110 is configured as an input electrode; the discharging roller 120 is spaced below the feeding roller 110 and configured as an output electrode; the negative pressure adsorption assembly 130 is at least disposed between the feeding roller 110 and the discharging roller 120, and has a negative pressure chamber 131, with a negative pressure adsorption device formed on one side of the negative pressure chamber 131. The negative pressure adsorption surface 132 is configured as an adsorption electrode. A first laser 140 and a second laser 150 are sequentially arranged on the same side of the negative pressure adsorption surface 132 along the electrode conveying direction. The first laser 140 corresponds to the top side of the negative pressure adsorption surface 132 and is configured to cut the top of the electrode tab. The second laser 150 corresponds to the bottom side of the negative pressure adsorption surface 132 and is configured to cut the bottom of the electrode tab. The negative pressure adsorption surface 132 includes an independent coating adsorption area and an electrode tab adsorption area. The coating adsorption area is configured to adsorb the coating area of ​​the electrode, and the electrode tab adsorption area is configured to adsorb the electrode tab and the cut waste material. The feed roller 110 and the discharge roller 120 are rotatably mounted on a mounting plate. The first laser 140, the second laser 150, and the negative pressure adsorption assembly 130 are also mounted on this mounting plate, realizing the assembly and installation of the mechanism.

[0047] In summary, the laser tab cutting forming device 100 and laser tab cutting forming machine provided in this embodiment of the invention have a negative pressure adsorption component 130 between the feed roller 110 and the discharge roller 120. This negative pressure adsorption component 130 has a negative pressure chamber 131 and a negative pressure adsorption surface 132, capable of adsorbing the electrode sheet. The first laser 140 and the second laser 150 are arranged vertically on the same side of the negative pressure adsorption surface 132, respectively completing the cutting of the top and bottom of the tab. Furthermore, the negative pressure adsorption surface 132 includes an independent coating adsorption area and a tab adsorption area. The coating adsorption area can adsorb the coating area of ​​the electrode sheet separately, and the tab adsorption area can adsorb the tab foil area of ​​the electrode sheet separately, i.e., adsorbing the tab and waste material separately. This embodiment of the invention adopts a double-roller structure, simplifying the intermediate roller structure, reducing the number of design parts, lowering the debugging difficulty, and allowing the first laser 140 and the second laser 150 to be arranged more compactly, reducing the overall space occupied. Furthermore, the negative pressure adsorption surface 132 of the negative pressure adsorption component 130 adsorbs the electrode sheet between the feed roller 110 and the discharge roller 120, thereby keeping the electrode sheet stable. The negative pressure adsorption surface 132 is divided into an independent coating adsorption area and an electrode tab adsorption area, which can independently control different areas of the electrode sheet. This ensures cutting stability while reducing the risk of waste material scratching during electrode tab cutting, thereby reducing the risk of electrode tab scratching or damage and improving the quality and safety of the battery cell.

[0048] The above description is merely a preferred embodiment of this utility model and is not intended to limit the utility model. Various modifications and variations can be made to this utility model by those skilled in the art. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of this utility model should be included within the protection scope of this utility model.

Claims

1. A laser-cut electrode forming device, characterized in that, include: The feed roller is configured as the input electrode. The discharge rollers are spaced below the feed rollers and configured as output electrodes; A negative pressure adsorption assembly is disposed at least between the feed roller and the discharge roller, and has a negative pressure chamber, wherein a negative pressure adsorption surface is formed on one side of the negative pressure chamber, and the negative pressure adsorption surface is configured to adsorb the electrode sheet. A first laser and a second laser are sequentially arranged on the same side of the negative pressure adsorption surface along the conveying direction of the electrode sheet. The first laser corresponds to the top side of the negative pressure adsorption surface and is configured to cut the top of the electrode tab. The second laser corresponds to the bottom side of the negative pressure adsorption surface and is configured to cut the bottom of the electrode tab. The negative pressure adsorption surface includes an independent coating adsorption area and a tab adsorption area. The coating adsorption area is configured to adsorb the coating area of ​​the electrode sheet, and the tab adsorption area is configured to adsorb the tabs of the electrode sheet and the waste material after cutting.

2. The laser-cut electrode forming apparatus according to claim 1, characterized in that, The negative pressure adsorption assembly includes an adsorption body, an adsorption base plate, and an adsorption belt. The adsorption body contains a negative pressure chamber. The adsorption belt and the adsorption base plate are both disposed on the adsorption body and located on one side of the negative pressure chamber. The adsorption belt is located in the tab adsorption area and is configured to adsorb and transport the electrode and the waste. The adsorption base plate is located in the coating adsorption area and is configured to adsorb the coating area of ​​the electrode.

3. The laser-cut electrode forming apparatus according to claim 2, characterized in that, The negative pressure adsorption assembly also includes a negative pressure insert plate, which is disposed on the adsorption body and configured to adjust the negative pressure adsorption force of the adsorption belt.

4. The laser-cut electrode forming apparatus according to claim 1, characterized in that, The laser-cut electrode tab forming device further includes a first support seat and a second support seat spaced apart between the feed roller and the discharge roller. The first support seat is provided with a first transmission channel for the electrode sheet to pass through, and the second support seat is provided with a second transmission channel for the electrode sheet to pass through. The first support seat corresponds to the first laser, and the second support seat corresponds to the second laser. The coating adsorption area is located between the first transmission channel and the second transmission channel, and the electrode tab adsorption area extends from the gap area between the first transmission channel and the second transmission channel to the second transmission channel.

5. The laser-cut electrode forming apparatus according to claim 4, characterized in that, The first support is also provided with a first laser heat sink, which is located on the side of the first transmission channel away from the first laser, and is used to reflect and attenuate the laser emitted by the first laser. The second support is also provided with a second laser heat sink, which is located on the side of the second transmission channel away from the second laser, and is used to reflect and attenuate the laser emitted by the second laser.

6. The laser-cut electrode forming apparatus according to claim 4, characterized in that, The laser-cut electrode forming device further includes a dust removal component, which includes a first front air knife, a first rear air knife, a second front air knife, and a second rear air knife. The first front air knife and the first rear air knife are disposed opposite to each other on the first support, and the first front air knife is located on the side of the first transmission channel closer to the first laser, while the first rear air knife is located on the side of the first transmission channel away from the first laser. The second front air knife and the second rear air knife are disposed opposite to each other on the second support, with the second front air knife located on the side of the second transmission channel closer to the second laser and the second rear air knife located on the side of the second transmission channel away from the second laser.

7. The laser-cut electrode forming apparatus according to claim 6, characterized in that, The dust removal assembly further includes a first negative pressure adsorption pipe and a second negative pressure adsorption pipe. The first negative pressure adsorption pipe is disposed on the side of the first support and corresponds to the first transmission channel; the second negative pressure adsorption pipe is disposed on the side of the second support and corresponds to the second transmission channel.

8. The laser-cut electrode forming apparatus according to claim 4, characterized in that, The laser-cut electrode forming device further includes a material line fixing roller group, which includes a material line fixing double support roller, a material line fixing roller, and a movable roller. The material line fixing double support roller and the material line fixing roller are respectively disposed at the inlet end and the outlet end of the second transmission channel. The movable roller is movably disposed at the inlet end of the second transmission channel, and the movable roller is correspondingly disposed with the material line fixing double support roller and is configured to roll against the two sides of the electrode sheet.

9. The laser-cut electrode forming apparatus according to claim 4, characterized in that, The laser-cut electrode forming device further includes a feeding pressure roller group, which includes a feeding pressure roller and a feeding support roller. The feeding pressure roller and the feeding support roller are both located at the feeding end of the first transmission channel, and the feeding pressure roller and the feeding support roller are correspondingly arranged and configured to roll against the two sides of the electrode sheet.

10. A laser-cut electrode forming machine, characterized in that, Includes the laser-cut tab forming apparatus as described in any one of claims 1-9.

Images