A lithium battery electrode groove insulating adhesive coating device

Abstract

This invention provides a lithium battery electrode groove insulating adhesive coating device, relating to the field of lithium battery manufacturing technology. It includes a first housing, a second housing, and a drying mechanism disposed between them. The first housing contains an unwinding roller, a winding roller, a first guide tensioning roller group, and a front-side identification dispensing assembly. The second housing contains a second guide tensioning roller group and a back-side identification dispensing assembly. The unwinding and winding rollers respectively unwind and wind the electrode strip; the first and second guide tensioning roller groups respectively tension and guide the electrode strip within their respective housings; the front and back-side identification dispensing assemblies respectively identify the front and back electrode grooves and fill them with insulating medium; the drying mechanism is used to cure the insulating medium. The electrode strip is released from the unwinding roller, passes sequentially through the front-side identification dispensing assembly, the drying mechanism, and the back-side identification dispensing assembly, and then folds back through the drying mechanism before returning to the winding roller. This eliminates the need for traditional insulating tape application, improving electrode processing safety and production yield.

Description

Technical Field

[0001] This invention relates to the field of lithium battery manufacturing technology, and in particular to a lithium battery electrode groove insulating adhesive coating device. Background Technology

[0002] In the manufacturing process of lithium battery electrodes, laser cleaning is required to create electrode grooves for tab welding. After laser cleaning, the metal substrate in these grooves is exposed. During subsequent ultrasonic or laser welding with the tabs, the exposed grooves are highly susceptible to abnormal conductivity, leading to micro-short circuits, reduced battery safety, and shortened lifespan. Therefore, insulation treatment of the electrode grooves is essential. Current technology typically uses insulating tape to adhere to the electrode grooves for insulation protection. However, the insulating tape is prone to peeling and detachment under prolonged electrolyte immersion and thermal cycling conditions, resulting in insulation barrier failure, exposed metal substrate, and the inability to completely eliminate the short-circuit risk.

[0003] Therefore, there is an urgent need for a lithium battery electrode groove insulating adhesive coating device to avoid the safety hazards caused by the easy detachment and incomplete bonding of traditional tape insulation, to achieve insulation protection for the electrode groove, and to improve the safety and production yield of lithium battery electrode processing. Summary of the Invention

[0004] The purpose of this invention is to address the above problems by providing a lithium battery electrode groove insulating adhesive coating device to improve the safety and production yield of lithium battery electrode processing.

[0005] This invention provides a lithium battery electrode groove insulating adhesive coating device, comprising: A first housing, comprising an unwinding roller, a winding roller, a first guide tensioning roller assembly, and a front-facing identification dispensing assembly; the first guide tensioning roller assembly is used to define the conveying path of the electrode strip within the first housing and to tension the electrode strip along the conveying path; the electrode strip has electrode grooves; the front-facing identification dispensing assembly is used to identify the position of the electrode grooves on the front side of the electrode strip and to fill the electrode grooves on the front side with an insulating medium; The second housing contains a second guide tension roller group and a reverse identification dispensing assembly. The second guide tension roller group is used to limit the conveying path of the electrode strip in the second housing and to tension the electrode strip on the conveying path. The reverse identification dispensing assembly is used to identify the position of the electrode groove on the reverse side of the electrode strip and to fill the electrode groove on the reverse side with an insulating medium. A drying mechanism is disposed between the first chamber and the second chamber, and is used to dry and cure the insulating medium filled in the groove of the electrode sheet; The electrode strip is released from the unwinding roller and, guided by the first guide tensioning roller group and the second guide tensioning roller group, passes sequentially through the front identification dispensing component, the drying mechanism, and the back identification dispensing component. After folding back through the drying mechanism, it returns to the take-up roller in the first housing.

[0006] According to certain embodiments of the present invention, both the first guide tensioning roller group and the second guide tensioning roller group include: an active traction component, a driven guide wheel, and a swing tensioning component arranged at intervals along the conveying path of the electrode strip. The active traction component is used to constrain the direction of the electrode strip and output driving force to drive the electrode strip forward. The driven guide wheel is used to support the electrode strip and constrain its direction. The swing tensioning component is used to apply tension to the electrode strip by swinging, so that the electrode strip remains taut on the conveying path.

[0007] According to the technical solutions provided by certain embodiments of the present invention, the front identification dispensing assembly includes a front coating assembly and a front groove identification component. The front groove identification component is disposed upstream of the front coating assembly and is used to identify the position of the electrode groove on the front side of the electrode strip. The front coating assembly is used to fill the electrode groove on the front side of the electrode strip with an insulating medium. The reverse identification dispensing assembly includes a reverse coating assembly and a reverse groove identification component. The reverse groove identification component is disposed upstream of the reverse coating assembly and is used to identify the position of the electrode groove on the reverse side of the electrode strip. The reverse coating assembly is used to fill the electrode groove on the reverse side of the electrode strip with an insulating medium.

[0008] According to the technical solutions provided in certain embodiments of the present invention, both the front adhesive coating assembly and the back adhesive coating assembly include: The guide drive component is slidably assembled in the first housing and the guide drive component of the reverse adhesive assembly is slidably assembled in the second housing; the guide drive component extends along the first direction and can move along the second direction and the third direction. Multiple dispensing components extend along a second direction and are distributed along a first direction on the guide drive component. The multiple dispensing components are drively connected to the guide drive component and are used to move along the first direction under the drive of the guide drive component and fill the electrode groove with an insulating medium. The first direction, the second direction, and the third direction are perpendicular to each other.

[0009] According to the technical solutions provided in certain embodiments of the present invention, the device further includes an incoming material detection component, which includes a front incoming material detection component and a back incoming material detection component. The front incoming material detection component is disposed on the first housing and located upstream of the front groove identification component, and is used to detect the specification parameters of the front side of the electrode strip. The back incoming material detection component is disposed on the second housing and located upstream of the back groove identification component, and is used to detect the specification parameters of the back side of the electrode strip.

[0010] According to the technical solutions provided in some embodiments of the present invention, the device further includes a control adjustment component, which is signal-connected to the front groove identification component, the front adhesive application component, and the front incoming material detection component, and is used to adjust the dispensing parameters of the front adhesive application component according to the position identified by the front groove identification component and the specification parameters detected by the front incoming material detection component. The control adjustment component is also connected to the reverse groove identification component, the reverse glue application component, and the reverse material receiving component, respectively, and is used to adjust the dispensing parameters of the reverse glue application component according to the position identified by the reverse groove identification component and the specification parameters detected by the reverse material receiving component.

[0011] According to the technical solutions provided in some embodiments of the present invention, the device further includes a defect detection mechanism, the defect detection mechanism comprising: A wet film detection assembly includes a front wet film detection component and a back wet film detection component. The front wet film detection component is disposed in a first housing and located between the front adhesive coating component and the drying mechanism, and is used to detect defects in the uncured insulating medium in the electrode groove on the front side of the electrode strip. The back wet film detection component is disposed in a second housing and located between the back adhesive coating component and the drying mechanism, and is used to detect defects in the uncured insulating medium in the electrode groove on the back side of the electrode strip. The dry film testing assembly includes a front dry film testing component and a back dry film testing component disposed in the first housing and located downstream of the drying mechanism. The two components are respectively located on both sides of the electrode strip and are used to detect the defects of the insulating medium after drying and curing in the electrode grooves on the front and back sides of the electrode strip. The front wet film detection device and the front dry film detection device are respectively connected to the control adjustment device. The control adjustment device is also used to correct the dispensing parameters of the front adhesive coating assembly according to the defects detected by the front wet film detection device and the front dry film detection device. The reverse wet film detection component and the reverse dry film detection component are respectively connected to the control adjustment component. The control adjustment component is also used to correct the dispensing parameters of the reverse adhesive assembly based on the defects detected by the reverse wet film detection component and the reverse dry film detection component.

[0012] According to the technical solutions provided by certain embodiments of the present invention, the device further includes a coding component, which is disposed in the first housing and located downstream of the dry film detection component, and is signal-connected to the control adjustment component; the control adjustment component is also used to control the coding component to engrave traceability codes on the locations of defects in the electrode strips detected by the wet film detection component and the dry film detection component.

[0013] According to the technical solutions provided by certain embodiments of the present invention, the device further includes an encoding verification component, which is disposed in the first housing and located downstream of the marking component, and is signal-connected to the control adjustment component, for collecting the traceability code and transmitting it to the control adjustment component; the control adjustment component is also used to output early warning information when the traceability code does not correspond to the location of the defect.

[0014] According to the technical solutions provided in some embodiments of the present invention, the device further includes a dust removal assembly, which includes a front dust removal component and a back dust removal component. The front dust removal component is disposed in the first housing and located upstream of the front groove identification component; the back dust removal component is disposed in the second housing and located upstream of the back groove identification component.

[0015] In summary, the present invention provides a lithium battery electrode groove insulating adhesive coating device, comprising: a first housing, wherein an unwinding roller, a take-up roller, a first guide tensioning roller group, and a front identification dispensing assembly are disposed within the first housing; the first guide tensioning roller group is used to limit the conveying path of the electrode strip in the first housing and to tension the electrode strip on the conveying path; the electrode strip has electrode grooves formed on it; the front identification dispensing assembly is used to identify the position of the electrode grooves on the front side of the electrode strip and to fill the electrode grooves on the front side with an insulating medium; and a second housing, wherein a second guide tensioning roller group and a reverse identification dispensing assembly are disposed within the second housing, the second guide tensioning roller group being used to limit the position of the electrode strip in the first housing and to tension the electrode strip in the first housing; the first guide tensioning roller group is used to limit the position of the electrode strip in the first housing and to tension the electrode strip in the first housing; the second guide tensioning roller group is used to limit the position of the electrode strip in the first housing and to fill the electrode grooves on the front side with an insulating medium; and a second housing, wherein a second guide tensioning roller group and a reverse identification dispensing assembly are disposed within the second housing, the second guide tensioning roller group being used to limit the position of the electrode strip in the first housing and to tension the electrode strip in the second .... The electrode strip is conveyed in the second housing along a conveying path and is tensioned along the conveying path; the reverse identification dispensing assembly is used to identify the position of the electrode groove on the reverse side of the electrode strip and fill the electrode groove on the reverse side with an insulating medium; the drying mechanism, which is located between the first housing and the second housing, is used to dry and cure the insulating medium filled in the electrode groove; the electrode strip is released from the unwinding roller, and under the guidance of the first guide tensioning roller group and the second guide tensioning roller group, it passes sequentially through the front identification dispensing assembly, the drying mechanism, and the reverse identification dispensing assembly, and then folds back through the drying mechanism before returning to the take-up roller in the first housing. Compared with existing technologies, this invention abandons the traditional method of applying insulating tape and adopts a double-sided dispensing and curing method to achieve insulation protection for the electrode grooves. Guided by the first and second guide tension roller groups, the electrode strip is released from the unwinding roller and first fills the front electrode groove with insulating medium in the first box. After being dried and cured by the drying mechanism, it is conveyed to the second box to fill the back electrode groove with insulating medium. Then it is folded back and passes through the drying mechanism again to dry and cure the insulating medium in the back electrode groove, and finally returns to the take-up roller to complete the dispensing process. This achieves insulation protection for the electrode grooves and completely eliminates the defects of easy curling and falling off when using insulating tape. It effectively avoids the risk of micro-short circuit caused by abnormal conduction between the electrode groove and the electrode tab, and improves the safety and production yield of lithium battery electrode processing.

[0016] It should be understood that the descriptions of technical features, technical solutions, beneficial effects, or similar language in this invention do not imply that all features and advantages can be achieved in any single embodiment. Rather, it is understood that the description of a feature or beneficial effect means that a specific technical feature, technical solution, or beneficial effect is included in at least one embodiment. Therefore, the descriptions of technical features, technical solutions, or beneficial effects in this specification do not necessarily refer to the same embodiment. Furthermore, the technical features, technical solutions, and beneficial effects described in this embodiment can be combined in any suitable manner. Those skilled in the art will understand that embodiments can be implemented without one or more specific technical features, technical solutions, or beneficial effects of a particular embodiment. In other embodiments, additional technical features and beneficial effects may be identified in specific embodiments that do not embody all embodiments. Attached Figure Description

[0017] To more clearly illustrate the technical solutions in the embodiments of the present invention, the accompanying drawings used in the description of the embodiments will be briefly introduced below. Obviously, the accompanying drawings described below are only some embodiments of the present invention. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0018] Figure 1 This is a schematic diagram of a lithium battery electrode groove insulating adhesive coating device provided in an embodiment of the present invention; Figure 2 This is a schematic diagram of the front coating assembly provided in an embodiment of the present invention; Figure 3 This is a schematic diagram of the structure of the active traction component provided in an embodiment of the present invention; Figure 4 This is a schematic diagram of the structure of the swing tensioning assembly provided in an embodiment of the present invention.

[0019] The text labels in the image represent: 1. First housing; 2. Second housing; 4. Electrode strip; 6. Drying mechanism; 9. Engraving component; 10. Encoding verification component; 11. Buffer component; 12. Correction component; 13. Dust and iron removal component; 14. Belt receiving platform; 31. Unwinding roller; 32. Rewinding roller; 331. Active traction assembly; 3311. Main traction roller; 3312. Driven pressure roller; 3313. Adjusting bracket; 332. Driven guide wheel; 333. Swing tensioning assembly; 3331. Drive component; 3332. Swing roller; 51. Positive 511. Front-side adhesive application assembly; 512. Front-side groove recognition component; 52. Back-side adhesive application assembly; 521. Back-side adhesive application assembly; 522. Back-side groove recognition component; 711. Front-side incoming material inspection component; 712. Back-side incoming material inspection component; 721. Front-side wet film inspection component; 722. Back-side wet film inspection component; 731. Front-side dry film inspection component; 732. Back-side dry film inspection component; 811. Front-side dust removal component; 812. Back-side dust removal component; a. Guide drive component; b. Dispensing component. Detailed Implementation

[0020] To enable those skilled in the art to better understand the technical solutions of the present invention, the technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. This description is merely illustrative and explanatory, and should not be construed as limiting the scope of protection of the present invention in any way. Specifically, the described embodiments are only some embodiments of the present invention, not all embodiments. All other embodiments obtained by those skilled in the art based on the embodiments of the present invention without creative effort should fall within the scope of protection of the present invention.

[0021] It should be noted that similar reference numerals and letters in the following figures denote similar items; therefore, once an item is defined in one figure, it does not need to be further defined and explained in subsequent figures. Furthermore, the terms "comprising" and "having," and any variations thereof, are intended to cover non-exclusive inclusion. For example, a process, method, apparatus, product, or device that includes a series of steps or units is not necessarily limited to those steps or units explicitly listed, but may include other steps or units not explicitly listed or inherent to such process, method, product, or device.

[0022] As mentioned in the background section, in view of the problems in the prior art, this embodiment provides a lithium battery electrode groove insulating adhesive coating device, including: The first housing 1 is provided with an unwinding roller 31, a winding roller 32, a first guide tensioning roller group, and a front identification dispensing assembly 51. The first guide tensioning roller group is used to limit the conveying path of the electrode strip 4 in the first housing 1 and to tension the electrode strip 4 on the conveying path. The electrode strip 4 has an electrode groove. The front identification dispensing assembly 51 is used to identify the position of the electrode groove on the front side of the electrode strip 4 and fill the electrode groove on the front side with an insulating medium. The second housing 2 is equipped with a second guide tension roller group and a reverse identification dispensing assembly 52. ​​The second guide tension roller group is used to limit the conveying path of the electrode strip 4 in the second housing 2 and to tension the electrode strip 4 on the conveying path. The reverse identification dispensing assembly 52 is used to identify the position of the electrode groove on the reverse side of the electrode strip 4 and to fill the electrode groove on the reverse side with an insulating medium. Drying mechanism 6 is disposed between the first box 1 and the second box 2, and is used to dry and cure the insulating medium filled in the electrode groove; The electrode strip 4 is released from the self-unwinding roller 31 and, guided by the first guide tensioning roller group and the second guide tensioning roller group, passes sequentially through the front identification dispensing assembly 51, the drying mechanism 6, and the back identification dispensing assembly 52. ​​After folding back through the drying mechanism 6, it returns to the take-up roller 32 in the first housing 1.

[0023] For details, please refer to Figure 1The lithium battery electrode groove insulating adhesive coating device provided in this embodiment includes a first housing 1, a second housing 2, an unwinding roller 31, a winding roller 32, a first guide tension roller group, a front identification dispensing assembly 51, a second guide tension roller group, a back identification dispensing assembly 52, and a drying mechanism 6. The insulating medium is ceramic insulating adhesive. The first housing 1 houses the unwinding roller 31, the winding roller 32, the first guide tension roller group, and the front identification dispensing assembly 51. The unwinding roller 31 and the winding roller 32 are arranged adjacent to each other in the bottom area of ​​the first housing 1. The unwinding roller 31 is responsible for continuously releasing the electrode strip 4 from the electrode groove. The winding roller 32 is responsible for winding and storing the processed electrode strip 4. The first guide tension roller assembly is arranged along the conveying path of the electrode strip 4 inside the first housing 1. It constrains the trajectory of the electrode strip 4 within the first housing 1 and continuously applies a constant tension force to the electrode strip 4, preventing slack from affecting the accuracy of subsequent identification and dispensing steps. The front identification dispensing assembly 51 can identify the position of the front electrode groove of the electrode strip 4 and fill the front electrode groove with insulating medium. The second housing 2 houses the second guide tension roller assembly and the back identification dispensing assembly 52. ​​The second guide tension roller assembly guides and conveys the electrode strip 4 within the second housing 2, maintaining its tension during conveying. The back identification dispensing assembly 52 identifies the position of the back groove of the electrode strip 4 and fills the back groove with insulating medium. The drying mechanism 6 is assembled between the first housing 1 and the second housing 2, and the electrode strip 4 can pass through the internal drying channel of the drying mechanism 6 in both directions. This allows for the drying and curing of the insulating medium filling the electrode grooves on both the front and back sides, ensuring the adhesive layer is stably formed and adheres to the metal substrate of the electrode groove. In this embodiment, the drying mechanism 6 is an oven. Figure 1 As shown, the conveying path of the electrode strip 4 in this device is circular. After the electrode strip 4 is released from the unwinding roller 31, it is guided and conveyed by the first guide tensioning roller group and the second guide tensioning roller group. First, it passes through the front identification dispensing component 51 inside the first housing 1 to complete the front electrode groove coating. Then, it enters the drying mechanism 6 to complete the air drying and curing of the insulating medium in the front electrode groove. Then, it is sent into the second housing 2 and passes through the back identification dispensing component 52 to complete the back groove coating. After that, the electrode strip 4 is folded back and passes through the drying mechanism 6 again to complete the drying and curing of the insulating medium filled on the back. After the processing is completed, the electrode strip 4 returns to the winding roller 32 inside the first housing 1 to complete the winding.

[0024] This invention abandons the traditional method of using insulating tape for protection, and instead uses a dispensing and curing process to provide insulation and barrier to the electrode grooves. Guided by the coordinated action of the first and second guide tension roller groups, the electrode strip 4 continuously travels after exiting the unwinding roller 31. It first fills the front electrode groove at the front identification dispensing component 51 in the first housing 1, and after drying and curing by the drying mechanism 6, it enters the second housing 2. There, it fills the back electrode groove at the back identification dispensing component 52. The electrode strip 4, having completed double-sided filling, folds back to the drying mechanism 6 for a second pass, allowing the insulating medium in the back electrode groove to fully cure and completely cover the exposed metal substrate, forming a dense, integrally bonded insulating layer. This isolates the metal substrate from any abnormal conductive pathways between it and the subsequent electrode tab welding area, simultaneously improving the safety and production yield of lithium battery electrode processing.

[0025] In a preferred embodiment, both the first guide tensioning roller group and the second guide tensioning roller group include: an active traction component 331, a driven guide wheel 332, and a swing tensioning component 333, which are arranged at intervals along the conveying path of the electrode strip 4. The active traction component 331 is used to constrain the direction of the electrode strip 4 and output driving force to drive the electrode strip 4 to move; the driven guide wheel 332 is used to support the electrode strip 4 and constrain the direction of the electrode strip 4; the swing tensioning component 333 is used to apply tension to the electrode strip 4 by swinging, so that the electrode strip 4 remains taut on the conveying path.

[0026] Specifically, such as Figure 1 As shown, both the first and second guide tensioning roller groups include an active traction assembly 331, a driven guide wheel 332, and a swing tensioning assembly 333, arranged at intervals along the conveying path of the electrode material belt 4. Wherein, as... Figure 3 As shown, the active traction assembly 331 includes a main traction roller 3311, a driven pressure roller 3312, and an adjusting bracket 3313. The main traction roller 3311 is powered by a motor or other drive device to provide stable traction force for the entire conveying process of the electrode strip 4. The driven pressure roller 3312 is press-fitted with the main traction roller 3311 through the adjusting bracket 3313, which can adjust the clamping pressure to accommodate electrode strips 4 of different thicknesses, preventing the strip from slipping or deviating. The driven guide wheel 332 is a non-powered follower roller used to support the electrode strip 4 and constrain its conveying direction. Figure 4As shown, the swing tensioning assembly 333 includes a drive component 3331 and a swing roller 3332. The drive component 3331 can be a telescopic cylinder or a servo motor. The output end of the drive component 3331 is connected to the swing roller 3332. One end of the swing roller 3332 is rotatably connected to the first housing 1, and the other end is wound with an electrode strip 4. The drive component 3331 drives the swing roller 3332 to swing. The movement of the swing roller 3332 pulls the electrode strip 4, so that the electrode strip 4 is kept taut. This effectively eliminates the tension change caused by the unwinding and rewinding process, thereby reducing the problem of the electrode strip 4 shaking and shifting, and improving the effect of insulating medium filling molding.

[0027] In a preferred embodiment, the front identification dispensing assembly 51 includes a front adhesive application assembly 511 and a front groove identification component 512. The front groove identification component 512 is disposed upstream of the front adhesive application assembly 511 and is used to identify the position of the electrode groove on the front side of the electrode strip 4. The front adhesive application assembly 511 is used to fill the electrode groove on the front side of the electrode strip with an insulating medium. The reverse identification dispensing assembly 52 includes a reverse adhesive application assembly 521 and a reverse groove identification component 522. The reverse groove identification component 522 is located upstream of the reverse adhesive application assembly 521 and is used to identify the position of the electrode groove on the reverse side of the electrode strip 4. The reverse adhesive application assembly 521 is used to fill the electrode groove on the reverse side of the electrode strip with an insulating medium.

[0028] Specifically, such as Figure 1 As shown, both the front-side identification dispensing assembly 51 and the back-side identification dispensing assembly 52 adopt an upstream-downstream arrangement of visual positioning followed by adhesive application. Taking the front-side identification dispensing assembly 51 as an example, the front groove identification component 512 is arranged first along the conveying direction of the electrode strip 4, and the front adhesive application assembly 511 is arranged downstream. When the electrode strip 4 passes the front groove identification component 512, the front groove identification component 512 first identifies the position of the electrode groove, and then enters the front adhesive application assembly 511 for filling. The structure of the back adhesive application assembly 521 of the back-side identification dispensing assembly 52 is the same as that of the front adhesive application assembly 511, and the structure of the back groove identification component 522 is also the same as that of the front groove identification component 512. In this embodiment, both the back groove identification component 522 and the front groove identification component 512 adopt a 16K linear scan industrial camera, which can continuously capture the position of the electrode groove in the dynamic moving state without stopping the electrode strip 4 during its continuous high-speed conveying.

[0029] In a preferred embodiment, both the front adhesive application assembly 511 and the back adhesive application assembly 521 include: The guide drive a of the front adhesive coating assembly 511 is slidably assembled to the first housing 1, and the guide drive a of the back adhesive coating assembly 521 is slidably assembled to the second housing 2; the guide drive a extends along the first direction and can move along the second direction and the third direction. Multiple dispensing components b extend along a second direction and are distributed along a first direction on a guide drive component a. The multiple dispensing components b are all connected to the guide drive component a for moving along the first direction under the drive of the guide drive component a and filling the electrode groove with an insulating medium. The first direction, the second direction and the third direction are perpendicular to each other.

[0030] Specifically, such as Figure 2 As shown, the guide drive component a is a long linear motor slide module, and the dispensing component b is a piezoelectric dispensing valve. The guide drive component a of the front adhesive application assembly 511 is slidably mounted inside the first housing 1, and the guide drive component a of the back adhesive application assembly 521 is slidably mounted inside the second housing 2. Both sets of guide drive components a extend along the first direction and can be translated as a whole along the second and third directions under the drive of the motor. Multiple dispensing components b are mounted on the guide drive component a, and the multiple dispensing components b are arranged at intervals along the first direction on the guide drive component a, and each dispensing component b extends along the second direction. Through the overall displacement of the guide drive component a in the second and third directions, combined with the movement of each dispensing component b on the guide drive component a along the first direction, each dispensing component b can be aligned with the corresponding electrode groove, realizing synchronous movement and synchronous adhesive application with the electrode groove. All dispensing components b are suspended above the electrode strip 4, with a pre-existing gap between them. Throughout the operation, there is no physical contact between the components and the surface of the electrode strip 4, completely avoiding the defects of traditional downward-pressing dispensing mechanisms that scratch the electrode strip 4 and abrade the uncured wet adhesive layer. Simultaneously, there is no need to stop for cutting or slitting, making it suitable for long-distance continuous conveying of rolled materials. This eliminates mechanical shocks, electrode strip 4 misalignment, and vibration caused by frequent equipment start-ups and shutdowns, ensuring effective filling and molding of the electrode grooves. In this embodiment, the three movement directions are orthogonal to each other: the first direction is the width direction of the electrode strip 4 (…). Figure 2 (X-direction), the third direction is the conveying direction of electrode material belt 4 ( Figure 2 The middle Y direction), the second direction is the vertical direction perpendicular to the surface of the electrode strip 4 ( Figure 2 (Z-direction).

[0031] In a preferred embodiment, the device further includes an incoming material detection component, which includes a front incoming material detection component 711 and a back incoming material detection component 712. The front incoming material detection component 711 is disposed on the first housing 1 and located upstream of the front groove identification component 512, and is used to detect the specification parameters of the front side of the electrode strip 4. The back incoming material detection component 712 is disposed on the second housing 2 and located upstream of the back groove identification component 522, and is used to detect the specification parameters of the back side of the electrode strip 4.

[0032] Specifically, such as Figure 1As shown, the lithium battery electrode groove insulating adhesive coating device provided in this embodiment also includes an incoming material detection component. The incoming material detection component includes a front incoming material detection component 711 and a back incoming material detection component 712. The front incoming material detection component 711 is disposed on the first housing 1 and located upstream of the front groove identification component 512. The back incoming material detection component 712 has the same structure as the front incoming material detection component 711, and it is disposed on the second housing 2 and located upstream of the back groove identification component 522. In this embodiment, both are 16K linear scan industrial cameras used to detect the labels on the electrode strip 4. Each label contains specification parameters such as the width of the electrode strip 4, the electrode groove spacing, and the electrode groove size, so as to adjust the filling process of the front coating component 511 and the back coating component 521 according to the different specification parameters of the electrode strip 4.

[0033] In a preferred embodiment, the device further includes a control adjustment component, which is signal-connected to the front groove identification component 512, the front adhesive application component 511, and the front incoming material detection component 711, respectively, and is used to adjust the dispensing parameters of the front adhesive application component 511 according to the position identified by the front groove identification component 512 and the specification parameters detected by the front incoming material detection component 711. The control adjustment component is also connected to the reverse groove identification component 522, the reverse glue application component 521, and the reverse incoming material detection component 712 respectively, and is used to adjust the dispensing parameters of the reverse glue application component 521 according to the position identified by the reverse groove identification component 522 and the specification parameters detected by the reverse incoming material detection component 712.

[0034] Specifically, the lithium battery electrode groove insulating adhesive coating device provided in this embodiment also includes a control adjustment component, which is signal-connected to the front groove identification component 512, the front adhesive coating component 511, the front incoming material detection component 711, the back groove identification component 522, the back adhesive coating component 521, and the back incoming material detection component 712. Since different electrode strips 4 have different specifications such as width, groove spacing, and groove size, and the electrode groove position may experience dynamic offsets such as deviation and lag during roll material transport, the control adjustment component needs to adjust the dispensing parameters of the front adhesive coating component 511 based on the position identified by the front groove identification component 512 and the specifications detected by the front incoming material detection component 711, and adjust the dispensing parameters of the back adhesive coating component 521 based on the position identified by the back groove identification component 522 and the specifications detected by the back incoming material detection component 712. For example, when replacing the electrode strip 4 with one having a larger groove spacing, the control adjustment component controls the guide drive a to move the dispensing component b along the first direction, aligning each dispensing component b with the corresponding electrode groove. Alternatively, when increasing the conveying speed of the electrode strip 4, the movement speed of the guide drive a along the third direction is simultaneously increased to prevent misalignment during filling. Furthermore, when filling electrode grooves with greater width and depth, the control adjustment component extends the opening time of the dispensing component b, increasing the output of the dispensing component b and ensuring complete coating of the electrode groove.

[0035] In a preferred embodiment, the apparatus further includes a defect detection mechanism, which comprises: The wet film detection assembly includes a front wet film detection component 721 and a back wet film detection component 722. The front wet film detection component 721 is disposed in the first housing 1 and located between the front adhesive coating component 511 and the drying mechanism 6, and is used to detect defects in the insulating medium that has not been dried and cured in the electrode groove on the front side of the electrode strip. The back wet film detection component 722 is disposed in the second housing 2 and located between the back adhesive coating component 521 and the drying mechanism 6, and is used to detect defects in the insulating medium that has not been dried and cured in the electrode groove on the back side of the electrode strip. The dry film testing assembly includes a front dry film testing component 731 and a back dry film testing component 732 disposed in the first housing 1 and located downstream of the drying mechanism 6. The two components are located on both sides of the electrode strip 4, and are used to detect the defects of the insulating medium after drying and curing in the electrode grooves on the front and back sides of the electrode strip. The front wet film detection component 721 and the front dry film detection component 731 are respectively connected to the control adjustment component. The control adjustment component is also used to correct the dispensing parameters of the front adhesive assembly 511 based on the defects detected by the front wet film detection component 721 and the front dry film detection component 731. The reverse wet film detection component 722 and the reverse dry film detection component 732 are respectively connected to the control adjustment component. The control adjustment component is also used to correct the dispensing parameters of the reverse adhesive assembly 521 based on the defects detected by the reverse wet film detection component 722 and the reverse dry film detection component 732.

[0036] Specifically, such as Figure 1 As shown, the lithium battery electrode groove insulating adhesive coating device provided in this embodiment also includes a defect detection mechanism, which includes a wet film detection component and a dry film detection component. The wet film detection component includes a front wet film detection element 721 and a back wet film detection element 722. The front wet film detection element 721 is disposed within the first housing 1 and located between the front adhesive coating component 511 and the drying mechanism 6. It is used to detect whether there are defects in the uncured insulating medium within the electrode groove on the front side of the electrode strip, and to determine the location and type of the defects. The back wet film detection element 722 has the same structure as the front wet film detection element 721. It is disposed within the second housing 2 and located between the back adhesive coating component 521 and the drying mechanism 6. It is used to detect whether there are defects in the uncured insulating medium within the electrode groove on the back side of the electrode strip, and to determine the location and type of the defects. The dry film detection assembly includes a front dry film detection element 731 and a back dry film detection element 732, both housed within the first housing 1. These two elements have identical structures and are respectively positioned on both sides of the electrode strip 4. They are used to detect defects in the insulating medium after drying and curing within the electrode grooves on the front and back sides of the electrode strip, respectively, and to determine the location and type of the defects. Furthermore, the front wet film detection element 721, the back wet film detection element 722, the front dry film detection element 731, and the back dry film detection element 732 are all connected to a control adjustment component. The control adjustment component can adjust the dispensing parameters of the front adhesive coating assembly 511 and the back adhesive coating assembly 521 based on the defects detected by these detection elements, allowing for more accurate filling of the insulating medium in the electrode strip 4 before adhesive dispensing.

[0037] In a preferred embodiment, the device further includes a coding component 9, which is disposed in the first housing 1 and located downstream of the dry film detection component, and is signal-connected to the control adjustment component; the control adjustment component is also used to control the coding component 9 to engrave traceability codes on the location of defects in the electrode strip 4 detected by the wet film detection component and the dry film detection component.

[0038] Specifically, such as Figure 1As shown, the lithium battery electrode groove insulating adhesive coating device provided in this embodiment also includes a marking component 9. The marking component 9 is disposed inside the first housing 1 and located downstream of the dry film detection component and is signal-connected to the control adjustment component. After the dry film detection component completes defect detection, the electrode strip 4 is conveyed to the location of the marking component 9. During the processing, the front wet film detection component 721, the back wet film detection component 722, the front dry film detection component 731, and the back dry film detection component 732 will upload all defects to the control adjustment component. After integrating all defect data, the control adjustment component drives the marking component 9 to mark the traceability code at the corresponding position of the defect, which facilitates the rapid location of defective areas in subsequent slitting and quality inspection processes, and removes the defective areas on the electrode strip 4. In this embodiment, the marking component 9 adopts a laser marking device.

[0039] In a preferred embodiment, the device further includes an encoding verification component 10, which is disposed inside the first housing 1 and located downstream of the marking component 9, and is signal-connected to the control adjustment component. The encoding verification component 10 is used to collect traceability codes and transmit them to the control adjustment component. The control adjustment component is also used to output early warning information when the traceability code does not correspond to the location of the defect.

[0040] Specifically, such as Figure 1 As shown, the lithium battery electrode groove insulating adhesive coating device provided in this embodiment also includes a coding verification component 10. The coding verification component 10 is disposed in the first housing 1 and located downstream of the coding component 9 and is signal-connected to the control adjustment component. After the electrode strip 4 is coded by the coding component 9, it is immediately transported to the downstream coding verification component 10. The coding verification component 10 scans and reads the traceability code etched on the electrode strip 4 in real time and transmits the read coding information back to the control adjustment component in real time. The control adjustment component has pre-stored the defect data uploaded by the wet film detection component and the dry film detection component. It will match and verify the coded information obtained by scanning with the stored defect location information one by one. If there are abnormalities such as missing coding, incorrect coding, or the coding not matching the corresponding defect location, the control adjustment component will immediately output a warning message to remind the operator to stop the machine for verification in time, so as to avoid the downstream process being unable to accurately identify and remove defective areas due to coding errors.

[0041] In a preferred embodiment, the device further includes a dust removal assembly, which includes a front dust removal component 811 and a back dust removal component 812. The front dust removal component 811 is disposed in the first housing 1 and located upstream of the front groove identification component 512; the back dust removal component 812 is disposed in the second housing 2 and located upstream of the back groove identification component 522.

[0042] Specifically, such as Figure 1As shown, the lithium battery electrode groove insulating adhesive coating device provided in this embodiment also includes a dust removal component, which includes a front dust removal component 811 and a back dust removal component 812. The front dust removal component 811 is disposed in the first housing 1 and located upstream of the front groove identification component 512, and the back dust removal component 812 is disposed in the second housing 2 and located upstream of the back groove identification component 522. The two components have the same structure and are used to clean the electrode groove and the surface of the electrode strip 4 before the electrode groove is filled with insulating medium. In this embodiment, the surface of the electrode strip 4 and the electrode groove can be thoroughly cleaned by an anti-static flexible brush. In addition, a negative pressure dust collection device can be used to thoroughly adsorb laser dust, slag, and fine debris to ensure that the surface of the electrode strip 4 and the electrode groove are clean. This allows the subsequently coated ceramic insulating adhesive to adhere tightly to the inner wall of the electrode groove, greatly improving the bonding adhesion between the ceramic insulating adhesive and the electrode groove, and preventing problems such as adhesive bubbles, delamination, and local insulation failure caused by dust inclusions.

[0043] In addition, the lithium battery electrode groove insulating adhesive coating device provided in this embodiment also includes multiple tape-connecting platforms 14, dust removal and iron removal components 13, buffer components 11, and multiple correction components 12. The multiple tape-connecting platforms 14 are spaced apart on the conveying path of the electrode material strip 4, allowing for the connection and bonding of new and old electrode material strips 4, enabling uninterrupted continuous production on the production line. The dust removal and iron removal components 13 are located upstream of the winding roller 32, used to remove impurities from the electrode material strip 4 that is about to be wound after processing. The buffer component 11 is arranged inside the first housing 1, located between the marking component 9 and the dry film detection component. The buffer component 11 can slide on the first housing 1, used to compensate for the difference in conveying speed between the preceding and following processes through its own sliding displacement, and to buffer excess electrode material strip 4 generated due to the inconsistency in conveying rhythm between the marking component 9 and the preceding process. Multiple correction components 12 are spaced apart on the conveying path of the electrode material belt 4 to correct the deviation of the electrode material belt 4 in the width direction in real time by rotating themselves.

[0044] This invention abandons the traditional method of applying insulating tape and instead uses a dispensing and curing process to insulate the grooves of the electrode strip 4. The electrode strip 4 is released by the unwinding roller 31 and continuously guided by the first and second guide tensioning roller groups. First, the front identification dispensing component 51 in the first housing 1 completes the filling of the insulating medium in the front groove. After being dried by the drying mechanism 6, it enters the second housing 2, where the back identification dispensing component 52 completes the filling of the back groove. The electrode strip 4, after double-sided dispensing, is folded back and fully cured by the drying mechanism 6, forming a dense insulating layer on the surface of the electrode groove, blocking abnormal conductive paths, and improving electrode processing safety and production yield. This device integrates fully automated processes such as dust removal, visual recognition, dispensing, defect detection, drying, coding and traceability, and rewinding, with minimal manual intervention, stable mass production, and low production costs. This device can also adaptively adjust the dispensing parameters of the dispensing identification mechanism according to the specifications of the electrode strip 4 and the real-time position of the electrode groove, accurately match the position of the electrode groove to complete the filling of the insulating medium, improve the processing accuracy of the insulating coating of the electrode groove, and at the same time, it can engrave the defective electrode sheets detected and identified to achieve accurate traceability of defects, which facilitates the subsequent removal of defective areas and further improves the processing accuracy and finished product yield.

[0045] To facilitate understanding by those skilled in the art, the working process of the lithium battery electrode groove insulating adhesive coating device provided by the present invention is as follows: The unwinding roller 31 releases the electrode strip 4, which sequentially passes through the front dust collector 811, the front incoming material detector 711, and the front groove identifier 512. Simultaneously, the front incoming material detector 711 and the front groove identifier 512 transmit the specifications and the position of the front electrode groove of the electrode strip 4 to the control and adjustment unit. The electrode strip 4 is then conveyed to the front adhesive coating assembly 511. The control and adjustment unit, based on the specifications and position parameters, adjusts the guide drive a of the front adhesive coating assembly 511 to move the dispensing component b. The insulating medium is filled in; after passing through the front wet film detection component 721, the electrode strip 4 enters the drying mechanism 6 for drying and curing. At the same time, the front wet film detection component 721 feeds back the detected defects to the control adjustment component to correct the dispensing parameters; the electrode strip enters the second box 2 and passes through the correction component 12, the reverse material inspection component 712, the reverse dust removal component 812, and the reverse groove identification component 522 in sequence. At the same time, the reverse material inspection component 712 and the reverse groove identification component 522 identify the specifications and parameters of the reverse side of the electrode strip 4 and the reverse electrode groove. The position of the groove is transmitted to the control adjustment component, which adjusts the guide drive a and dispensing component b of the reverse coating assembly 521 to fill the reverse groove with insulating medium. The electrode strip 4 enters the drying mechanism 6 after passing the reverse wet film detection component 722 for drying and curing of the reverse insulating medium. At the same time, the reverse wet film detection component 722 feeds back the detected defects to the control adjustment component to correct the dispensing parameters. The electrode strip 4 returns to the first housing 1 and passes sequentially through the correction component 12, the reverse dry film detection component 732, and the front dry film detection component 74. 31. Simultaneously, the front dry film detection unit 731 and the back dry film detection unit 732 transmit the detected defects to the control adjustment unit; the electrode strip 4 passes through the buffer unit 11 and reaches the marking unit 9. The control adjustment unit controls the marking unit 9 to mark the traceability code at the corresponding position of the defect according to the defect data. The code verification unit 10 collects the traceability code and sends it back to the control adjustment unit. The control adjustment unit checks the matching relationship between the code and the defect position and outputs a warning message when there is a mismatch; the electrode strip 4 returns to the take-up roller 32 after passing through the dust removal and iron removal unit 13.

[0046] This article uses specific examples to illustrate the principles and implementation methods of the present invention. The descriptions of the above embodiments are only for the purpose of helping to understand the method and core ideas of the present invention. The above are only preferred embodiments of the present invention. It should be noted that due to the limitations of textual expression, while there are objectively infinite specific structures, those skilled in the art can make several improvements, modifications, or changes without departing from the principles of the present invention, and can also combine the above technical features in an appropriate manner; these improvements, modifications, changes, or combinations, or the direct application of the inventive concept and technical solution to other occasions without modification, should all be considered within the scope of protection of the present invention.

Claims

1. A device for applying insulating adhesive to the grooves of lithium battery electrode sheets, characterized in that, include: The first housing (1) is provided with an unwinding roller (31), a winding roller (32), a first guide tensioning roller group, and a front identification dispensing assembly (51); the first guide tensioning roller group is used to limit the conveying path of the electrode strip (4) in the first housing (1) and to tension the electrode strip (4) on the conveying path; the electrode strip (4) is provided with an electrode groove; the front identification dispensing assembly (51) is used to identify the position of the electrode groove on the front of the electrode strip (4) and fill the electrode groove on the front with an insulating medium; The second housing (2) is provided with a second guide tensioning roller group and a reverse identification dispensing assembly (52). The second guide tensioning roller group is used to limit the conveying path of the electrode strip (4) in the second housing (2) and to tension the electrode strip (4) on the conveying path. The reverse identification dispensing assembly (52) is used to identify the position of the electrode groove on the reverse side of the electrode strip (4) and fill the electrode groove on the reverse side with an insulating medium. Drying mechanism (6), which is disposed between the first box (1) and the second box (2), is used to dry and solidify the insulating medium filled in the electrode groove; The electrode strip (4) is released from the unwinding roller (31), and under the guidance of the first guide tensioning roller group and the second guide tensioning roller group, it passes through the front identification dispensing assembly (51), the drying mechanism (6), and the back identification dispensing assembly (52) in sequence, and then folds back through the drying mechanism (6) and returns to the winding roller (32) in the first box (1).

2. The lithium battery electrode groove insulating adhesive coating device according to claim 1, characterized in that, The first guide tensioning roller group and the second guide tensioning roller group both include: an active traction component (331), a driven guide wheel (332) and an oscillating tensioning component (333) arranged at intervals along the conveying path of the electrode strip (4). The active traction component (331) is used to constrain the direction of the electrode strip (4) and output driving force to drive the electrode strip (4) to move. The driven guide wheel (332) is used to support the electrode strip (4) and constrain the direction of the electrode strip (4). The oscillating tensioning component (333) is used to apply tension to the electrode strip (4) by oscillation, so that the electrode strip (4) remains taut on the conveying path.

3. The lithium battery electrode groove insulating adhesive coating device according to claim 1, characterized in that, The front identification dispensing assembly (51) includes a front adhesive coating assembly (511) and a front groove identification component (512). The front groove identification component (512) is disposed upstream of the front adhesive coating assembly (511) and is used to identify the position of the electrode groove on the front side of the electrode strip (4). The front adhesive coating assembly (511) is used to fill the electrode groove on the front side of the electrode strip (4) with an insulating medium. The reverse identification dispensing assembly (52) includes a reverse coating assembly (521) and a reverse groove identification component (522). The reverse groove identification component (522) is disposed upstream of the reverse coating assembly (521) and is used to identify the position of the electrode groove on the reverse side of the electrode strip (4). The reverse coating assembly (521) is used to fill the electrode groove on the reverse side of the electrode strip (4) with an insulating medium.

4. The lithium battery electrode groove insulating adhesive coating device according to claim 3, characterized in that, Both the front adhesive coating assembly (511) and the back adhesive coating assembly (521) include: The guide drive (a) of the front adhesive coating assembly is slidably assembled in the first housing (1), and the guide drive (a) of the back adhesive coating assembly is slidably assembled in the second housing (2); the guide drive (a) extends along the first direction and can move along the second direction and the third direction. Multiple dispensing elements (b) are provided, each extending along a second direction and distributed along a first direction on the guide drive (a). The multiple dispensing elements (b) are tractively connected to the guide drive (a) and are used to move along the first direction under the drive of the guide drive (a) and fill the electrode groove with an insulating medium. The first direction, the second direction, and the third direction are perpendicular to each other.

5. The lithium battery electrode groove insulating adhesive coating device according to claim 4, characterized in that, The device further includes an incoming material detection component, which includes a front incoming material detection component (711) and a back incoming material detection component (712). The front incoming material detection component (711) is disposed on the first housing (1) and located upstream of the front groove identification component (512), and is used to detect the specifications of the front side of the electrode strip (4). The back incoming material detection component (712) is disposed on the second housing (2) and located upstream of the back groove identification component (522), and is used to detect the specifications of the back side of the electrode strip (4).

6. The lithium battery electrode groove insulating adhesive coating device according to claim 5, characterized in that, The device also includes a control adjustment component, which is connected to the front groove identification component (512), the front glue application component (511), and the front incoming material detection component (711) respectively, and is used to adjust the dispensing parameters of the front glue application component (511) according to the position identified by the front groove identification component (512) and the specification parameters detected by the front incoming material detection component (711). The control adjustment component is also connected to the reverse groove identification component (522), the reverse glue application component (521), and the reverse incoming material detection component (712) respectively, and is used to adjust the dispensing parameters of the reverse glue application component (521) according to the position identified by the reverse groove identification component (522) and the specification parameters detected by the reverse incoming material detection component (712).

7. The lithium battery electrode groove insulating adhesive coating device according to claim 6, characterized in that, The device further includes a defect detection mechanism, which comprises: A wet film detection assembly includes a front wet film detection component (721) and a back wet film detection component (722). The front wet film detection component (721) is disposed in the first housing (1) and located between the front adhesive coating component (511) and the drying mechanism (6), and is used to detect the defects of the insulating medium that has not been dried and cured in the electrode groove on the front side of the electrode strip (4). The back wet film detection component (722) is disposed in the second housing (2) and located between the back adhesive coating component (521) and the drying mechanism (6), and is used to detect the defects of the insulating medium that has not been dried and cured in the electrode groove on the back side of the electrode strip (4). The dry film testing assembly includes a front dry film testing component (731) and a back dry film testing component (732) disposed in the first housing (1) and located downstream of the drying mechanism (6). The two are respectively located on both sides of the electrode strip (4) and are used to detect the defects of the insulating medium after drying and curing in the electrode grooves on the front and back sides of the electrode strip (4). The front wet film detection element (721) and the front dry film detection element (731) are respectively connected to the control adjustment element. The control adjustment element is also used to correct the dispensing parameters of the front adhesive assembly (511) according to the defects detected by the front wet film detection element (721) and the front dry film detection element (731). The reverse wet film detection component (722) and the reverse dry film detection component (732) are respectively connected to the control adjustment component. The control adjustment component is also used to correct the dispensing parameters of the reverse adhesive assembly (521) based on the defects detected by the reverse wet film detection component (722) and the reverse dry film detection component (732).

8. The lithium battery electrode groove insulating adhesive coating device according to claim 7, characterized in that, The device also includes a coding component (9), which is disposed in the first housing (1) and located downstream of the dry film detection component, and is signal-connected to the control adjustment component; the control adjustment component is also used to control the coding component (9) to engrave traceability codes on the defect locations of the electrode strip (4) detected by the wet film detection component and the dry film detection component.

9. The lithium battery electrode groove insulating adhesive coating device according to claim 8, characterized in that, The device also includes an encoding verification component (10), which is disposed in the first housing (1) and located downstream of the marking component (9), and is signal-connected to the control adjustment component, for collecting the traceability code and transmitting it to the control adjustment component; the control adjustment component is also used to output early warning information when the traceability code does not correspond to the location of the defect.

10. The lithium battery electrode groove insulating adhesive coating device according to claim 3, characterized in that, The device further includes a dust removal assembly, which includes a front dust removal component (811) and a back dust removal component (812). The front dust removal component (811) is disposed in the first housing (1) and located upstream of the front groove identification component (512). The back dust removal component (812) is disposed in the second housing (2) and located upstream of the back groove identification component (522).

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