Variable pitch tab combing device and battery cell production system

Abstract

The application provides a variable-distance tab carding device and a battery cell production system. The device comprises a multi-axis insertion comb mechanism, which comprises: a carding assembly comprising a plurality of equally spaced carding units, the number of carding units being greater than the number of tabs, each carding unit comprising a first comb tooth and a second comb tooth; when the carding unit is in a closed state, the width of the carding unit is less than the gap width between the tabs; when the carding unit is in an open state, a non-clamping carding gap is formed between the first comb tooth and the second comb tooth of the adjacent carding unit, and the carding gap is greater than the thickness of the tab; a variable-distance driving module for driving each carding unit to synchronously switch between the closed state and the open state; and a multi-axis driver for driving each carding unit to synchronously move in a three-dimensional space. The variable-distance tab carding device of the application can card the tabs while avoiding damage to the tabs.

Description

Technical Field

[0001] This application belongs to the field of battery cell production technology, and more specifically, relates to a variable pitch tab combing device and a battery cell production system. Background Technology

[0002] In the production of pouch cell modules, the consistency of the tab arrangement directly affects the accuracy and efficiency of automated installation of the adapter board and subsequent processes (such as tab bending and welding). Traditional tab straightening technology generally adopts a clamping straightening solution, such as applying pressure to the tabs using pneumatic clamps or mechanical clamps to correct their position. However, during the clamping process, the tabs are prone to scratches, wrinkles, or even breakage due to friction or pressure, leading to a decrease in cell performance or even scrapping. Utility Model Content

[0003] This application provides a variable-pitch electrode combing device that can comb the electrodes while avoiding damage to them.

[0004] The technical solution adopted in this application embodiment is: to provide a variable-pitch electrode combing device, including a multi-axis comb insertion mechanism, wherein the multi-axis comb insertion mechanism includes:

[0005] A combing assembly includes multiple combing units arranged at equal intervals along a first direction, which is parallel to the arrangement direction of the battery cell tabs. The number of combing units is greater than the number of tabs. Each combing unit includes a first comb tooth and a second comb tooth arranged side by side along the first direction. The combing unit has a closed state and an open state. When the combing unit is in the closed state, the first comb tooth and the second comb tooth in the same combing unit are close to each other, and the width of the combing unit is smaller than the gap width between the tabs to allow insertion into the tab gap. When the combing unit is in the open state, the first comb tooth and the second comb tooth in the same combing unit are far apart from each other, and a non-clamping combing gap is formed between the first comb tooth and the second comb tooth of the adjacent combing unit. The combing gap is greater than the thickness of the tab.

[0006] The variable-pitch drive module is used to drive each of the combing units to synchronously switch between a closed state and an open state; and

[0007] A multi-axis driver is used to drive each of the combing units to move synchronously in three-dimensional space.

[0008] Furthermore, the variable pitch drive module includes:

[0009] Mounting plate, fixed to the moving end of the multi-axis driver;

[0010] The symmetrical guide groove assembly includes a first guide groove and a second guide groove, which are slidably connected to the mounting plate along a first direction. The first guide groove is connected to each of the first comb teeth, and the second guide groove is connected to each of the second comb teeth. The first guide groove and the second guide groove are respectively provided with inclined guide grooves. The inclination directions of the two guide grooves are opposite, and they are symmetrically arranged with a symmetry axis as the center. The symmetry axis is perpendicular to the first direction.

[0011] The driving unit includes a first driver and two moving parts. The two moving parts are slidably connected to the mounting plate along the axis of symmetry. One of the moving parts is correspondingly embedded in a guide groove. The first driver drives the two moving parts to move synchronously along the guide groove, so as to drive the first guide groove member and the second guide groove member to slide along the first direction, so that the first comb tooth and the second comb tooth symmetrically approach or separate.

[0012] Furthermore, the first guide groove is provided with a through groove;

[0013] One end of each of the first comb teeth is inserted into the through groove, and the other end is located outside the through groove;

[0014] One end of each of the second comb teeth is connected to the second guide groove, and the other end extends through the through groove to the exposed end of the first comb tooth. The second comb tooth can move in the through groove along the first direction.

[0015] Furthermore, the driving unit further includes a first limiting component, the first limiting component comprising:

[0016] The first limiting member is disposed on the mounting plate by the first adjusting mechanism and is located on the movement path of the connection structure between the moving member and the first driver;

[0017] The first adjustment mechanism is used to adjust the blocking position of the first limiting member on the movement path to limit the extreme position of the moving member moving toward the end of the two guide grooves that are close to each other.

[0018] Furthermore, the driving unit further includes a second limiting component, the second limiting component comprising:

[0019] The second limiting member is disposed on the mounting plate via the second adjustment mechanism and is located on the movement path of the connection structure between the moving member and the first driver;

[0020] The second adjustment mechanism is used to adjust the blocking position of the second limiting member on the movement path to limit the extreme position of the moving member moving toward the ends of the two guide grooves that are far apart from each other.

[0021] Furthermore, the multi-axis comb insertion mechanism also includes a resistance detection component, which comprises:

[0022] A fixed plate is connected to the moving end of the multi-axis driver;

[0023] A sliding guide structure is provided between the fixed plate and the mounting plate, and the guiding direction of the sliding guide structure is parallel to the axis of symmetry;

[0024] A resistance detection unit is disposed on the fixed plate and located at the end of the mounting plate away from the combing unit, and is used to detect the resistance experienced by the mounting plate.

[0025] Furthermore, the resistance detection component also includes:

[0026] The guide rod has one end connected to the resistance detection unit and the other end passing through the guide hole of the mounting plate and extending along the direction of the axis of symmetry.

[0027] An elastic buffer is disposed between the mounting plate and the resistance detection unit, which allows the mounting plate to move axially along the guide rod when it is subjected to resistance, so as to buffer the impact force when the first comb tooth and / or the second comb tooth is inserted into the tab gap.

[0028] Furthermore, both the first and second comb teeth have guide slopes at their ends, and the guide slopes of the first and second comb teeth have opposite inclination directions.

[0029] When the combing unit is in the closed state, the guide bevels of the first and second comb teeth approach each other and form sharp ends to guide the combing unit into the tab gap.

[0030] Furthermore, the variable-pitch tab combing device also includes a pre-shaping component, which is located upstream of the cell conveying path and at the station before the combing component. The pre-shaping component includes:

[0031] The shaping component includes a plurality of spaced teeth, which are spaced apart along the tab arrangement direction. One end of each tooth is connected to a second driver, and the other end faces the gap between the aluminum-plastic film sealing edges of the tabs. The cross-sectional width of the teeth gradually decreases from the root to the other end, and the spacing between the teeth matches the thickness of the battery cell.

[0032] The second driver is used to drive the teeth to insert between the battery cells, and to adjust the spacing or alignment deviation of the tabs by squeezing or pushing the aluminum-plastic film sealing edge of the battery cells through the teeth.

[0033] This application also provides a battery cell production system, including the variable pitch tab combing device as described in any of the preceding claims.

[0034] The beneficial effects of the variable-pitch tab combing device provided in this application embodiment are as follows: In the variable-pitch tab combing device of this application embodiment, the multi-axis driver controls the movement of each combing unit, so that the combing unit in the closed state (at this time the width of the combing unit is less than the tab gap) is precisely aligned with the tab gap; then, the multi-axis driver inserts the closed combing unit into the tab gap, avoiding misalignment of the tab or scratches during insertion; after insertion, the variable-pitch drive module drives the combing unit to switch to the open state, the first comb tooth and the second comb tooth separate, and a non-clamping combing gap greater than the tab thickness is formed between the first comb tooth and the second comb tooth of the adjacent combing unit, ensuring that the tab is uniformly clamped in the gap, and at the same time, the tab spacing is standardized and adjusted by precisely controlling the gap width; finally, the multi-axis driver moves along the tab length direction to comb the combing assembly, and performs synchronous combing on the entire tab, further correcting the vertical alignment of the tab. This process, through the coordination of three-dimensional motion and variable pitch structure, eliminates the need to apply clamping force to the tabs throughout the entire process. This avoids damage such as scratches, wrinkles, or breakage. Furthermore, through dynamic adjustment of closing and opening and multi-axis positioning, it ensures the consistency of the tabs in the horizontal and vertical directions, significantly improving the accuracy and efficiency of adapter plate installation and subsequent processes, and reducing the risk of cell scrapping. Attached Figure Description

[0035] To more clearly illustrate the technical solutions in the embodiments of this application, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this application. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0036] Figure 1 A three-dimensional structural schematic diagram of the variable-pitch bar combing device provided in an embodiment of this application;

[0037] Figure 2 A three-dimensional structural schematic diagram of the multi-axis comb insertion mechanism provided in the embodiments of this application;

[0038] Figure 3 A three-dimensional structural diagram of the combing component provided in this application installed on the Z-axis servo platform;

[0039] Figure 4 This is a three-dimensional structural diagram showing the connection between the combing component and the symmetrical guide groove component provided in an embodiment of this application;

[0040] Figure 5 This is a schematic diagram showing the connection between the combing component and the symmetrical guide groove component provided in an embodiment of this application;

[0041] Figure 6 A schematic diagram showing the combing unit inserted between the tabs in the closed state according to an embodiment of this application;

[0042] Figure 7 A schematic diagram illustrating the combing gap formed between adjacent comb teeth in the open state, as provided in an embodiment of this application;

[0043] Figure 8 A three-dimensional schematic diagram of the assembled variable pitch drive module and combing component provided in an embodiment of this application;

[0044] Figure 9 A schematic diagram of the bottom surface of the assembled variable pitch drive module and combing component provided in an embodiment of this application;

[0045] Figure 10 A three-dimensional structural schematic diagram of the resistance detection component provided in the embodiments of this application;

[0046] Figure 11 This is a three-dimensional structural diagram of the pre-shaping component provided in an embodiment of this application.

[0047] The following are the labeling elements in the figure:

[0048] 1. Multi-axis comb insertion mechanism; 11. Multi-axis driver; 111. X-axis servo platform; 112. Y-axis servo platform; 113. Z-axis servo platform; 12. Combing assembly; 121. Combing unit; 1211. First comb tooth; 1212. Second comb tooth; 1213. Combing gap; 1214. Guide slope; 13. Variable pitch drive module; 131. Mounting plate; 132. Symmetrical guide groove assembly; 1321. First guide groove component; 1322. Second guide groove component; 1323. Guide groove; 1 33. Drive unit; 1331. First driver; 1332. Moving component; 1333. First limiting assembly; 13331. First limiting component; 13332. First adjusting mechanism; 1334. Second limiting assembly; 13341. Second limiting component; 13342. Second adjusting mechanism; 1335. Connecting structure; 14. Resistance detection assembly; 141. Fixed plate; 142. Sliding guide structure; 143. Resistance detection unit; 144. Guide rod; 145. Elastic buffer;

[0049] 2. Pre-shaping assembly; 21. Shaping component; 211. Tooth; 22. Second actuator;

[0050] 3. Electrode; X, first direction. Detailed Implementation

[0051] To make the technical problems, technical solutions, and beneficial effects to be solved by this application clearer, the following detailed description is provided in conjunction with the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are merely illustrative and are not intended to limit the scope of this application.

[0052] It should be noted that when a component is referred to as being "fixed to" or "set on" another component, it can be directly on or indirectly on that other component. When a component is referred to as being "connected to" another component, it can be directly connected to or indirectly connected to that other component.

[0053] It should be understood that the terms "length", "width", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are only for the convenience of describing this application 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 application.

[0054] Furthermore, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include one or more of that feature. In the description of this application, "multiple" means two or more, unless otherwise explicitly specified.

[0055] Please see Figure 1 and Figure 2 The variable-pitch tab combing device provided in the embodiments of this application will now be described. The variable-pitch tab combing device provided in the embodiments of this application includes a multi-axis comb insertion mechanism 1, which includes a multi-axis driver 11, a combing assembly 12, and a variable-pitch drive module 13.

[0056] Reference Figure 3 , Figure 4 and Figure 5 The combing component 12 includes a plurality of combing units 121 arranged at equal intervals along a first direction P. The first direction P is parallel to the arrangement direction of the battery cell tabs 3. The number of combing units 121 is greater than the number of tabs 3. Each combing unit 121 includes a first comb tooth 1211 and a second comb tooth 1212 arranged side by side along the first direction P.

[0057] Multiple combing units 121 are arranged at intervals along a first direction P (parallel to the arrangement direction of the tabs 3), with equal intervals between adjacent combing units 121. The number of combing units 121 can be one more than the number of tabs 3. For example, if there are 10 tabs 3, then 11 combing units 121 can be set up and inserted between each tab 3 and excluding the tabs 3 located at both ends, so that each tab 3 is sandwiched between two combing units 121. This spaced arrangement design ensures that each combing unit 121 corresponds to the gap between the tabs 3, avoiding omissions or misalignments.

[0058] The combing unit has a closed state and an open state.

[0059] Reference Figure 6 When the combing unit 121 is in the closed state, the first comb tooth 1211 and the second comb tooth 1212 approach each other, and the width of the combing unit 121 is smaller than the gap width between the tabs 3, so as to insert into the gap between the tabs 3. This structure allows the comb tooth in the closed state to be directly inserted into the gap between the tabs 3, avoiding collisions that could cause the tabs 3 to shift or be damaged.

[0060] Reference Figure 7 When the combing unit 121 is in the open state, the first comb tooth 1211 and the second comb tooth 1212 of the same combing unit 121 are separated from each other, and a non-clamping combing gap 1213 is formed between the first comb tooth 1211 and the second comb tooth 1212 of the adjacent combing unit 121. The combing gap 1213 is greater than the thickness of the tab 3. The width of this gap is strictly controlled to be greater than the thickness of the tab 3, which ensures that the tab 3 can be naturally guided and aligned through the gap, and avoids friction or pressure caused by direct contact, thereby significantly reducing the risk of scratches, wrinkles or breakage of the tab 3.

[0061] The variable pitch drive module 13 is used to drive each combing unit 121 to switch synchronously between the closed and open states. By controlling the closing and opening actions of each combing unit 121, the variable pitch drive module 13 enables the device to flexibly adjust the arrangement of the tabs 3 according to production needs.

[0062] During operation, when insertion into the gap between the tabs 3 is required, the variable-pitch drive module 13 drives the comb teeth to close, ensuring that the width of the combing unit 121 is smaller than the gap between the tabs 3, thus achieving precise alignment and insertion. When adjusting the spacing between the tabs 3, the variable-pitch drive module 13 drives the comb teeth to open, forming a standardized combing gap 1213. This dynamic variable-pitch mechanism not only achieves precise control of the tab spacing but also ensures that the tabs 3 are evenly clamped in the gap through the synergistic effect of adjacent comb teeth, ultimately forming a neat and consistent arrangement. In addition, the synchronous control function of the variable-pitch drive module 13 enables all combing units 121 to switch states simultaneously, avoiding local stress concentration or arrangement deviation caused by asynchronous actions.

[0063] Reference Figure 2The multi-axis driver 11 is used to drive the combing assembly 12 to move in three-dimensional space. As the core of the device's motion control, the multi-axis driver 11 can precisely drive the combing assembly 12 to move along the X, Y, and Z axes in three-dimensional space. This function allows the combing assembly 12 to flexibly adjust its position, such as aligning with the gap of the tab 3 in the X-axis direction, inserting into the gap in the Y-axis direction, or performing up-and-down combing in the Z-axis direction, thereby adapting to the needs of different production scenarios. Based on multi-axis linkage, the combing assembly 12 can achieve precise positioning in multiple dimensions, providing a stable foundation for subsequent adjustment of the tab 3. In some embodiments, the multi-axis driver 11 includes an X-axis servo platform 111, a Y-axis servo platform 112, and a Z-axis servo platform 113.

[0064] In some embodiments, the first direction P is parallel to the X-axis direction, and the first direction P is perpendicular to the Y-axis direction and the Z-axis direction.

[0065] In the specific workflow, firstly, the multi-axis driver 11 moves the combing component 12 along the X-axis direction, precisely aligning the closed combing unit 121 with the gap between the tabs 3. Then, the multi-axis driver 11 inserts the closed comb teeth into the gap along the Y-axis direction. At this point, the width of the comb teeth is smaller than the gap width, facilitating the combing unit 121's insertion between the tabs 3. After insertion, the variable-pitch drive module 13 immediately drives the comb teeth to switch to the open state, forming a standardized combing gap 1213. Finally, the multi-axis driver 11 raises and lowers the combing component 12 along the Z-axis direction, synchronously combing the upper and lower ends of the tabs 3, further correcting the vertical alignment. This entire process, through the coordination of three-dimensional spatial movement and dynamic variable pitch, eliminates the need to apply clamping force to the tabs 3 throughout the process. This avoids the damage risks associated with traditional methods and, through dynamic adjustment of closing and opening and multi-axis positioning, ensures the consistency of the tabs 3's arrangement in both horizontal and vertical directions. This significantly improves the accuracy and efficiency of adapter plate installation and subsequent bending and welding processes, reducing the scrap rate of the battery cells due to damage to the tabs 3.

[0066] Reference Figure 4 , Figure 8 and Figure 9 The variable pitch drive module 13 includes a mounting plate 131, a symmetrical guide groove assembly 132, and a drive unit 133.

[0067] Mounting plate 131 is fixed to the moving end of multi-axis drive 11. As the base of the entire variable pitch drive module 13, mounting plate 131 is fixed to the moving end of multi-axis drive 11, providing stable support for the guide groove assembly and drive unit 133. Mounting plate 131 not only serves as a load-bearing structure but also as a crucial bridge connecting multi-axis drive 11 and combing assembly 12, ensuring the synchronization of the three-dimensional movement and variable pitch action of combing assembly 12.

[0068] Reference Figure 4 , Figure 5, Figure 8 and Figure 9 The symmetrical guide groove assembly 132 includes a first guide groove 1321 and a second guide groove 1322, which are slidably connected to the mounting plate 131 along the first direction P. The first guide groove 1321 is connected to each of the first comb teeth 1211, and the second guide groove 1322 is connected to each of the second comb teeth 1212. The first guide groove 1321 and the second guide groove 1322 are respectively provided with inclined guide grooves 1323. The inclination directions of the two guide grooves 1323 are opposite, and they are symmetrically arranged with the axis of symmetry as the center. The axis of symmetry is perpendicular to the first direction P.

[0069] The first guide groove 1321 and the second guide groove 1322 are slidably connected to the mounting plate 131 along the first direction P (the direction of the tabs 3 arrangement), and each is equipped with a guide groove 1323 with opposite inclination directions. The two guide grooves 1323 are symmetrically arranged with a symmetry axis perpendicular to the first direction P as the center, ensuring that the sliding path of the guide groove is strictly symmetrical and avoiding asynchronous or offset comb tooth movement due to movement deviation. This symmetrical design not only ensures the consistency of the opening and closing of the combing unit 121, but also restricts the direction of movement through physical structure to prevent accidental misalignment. Specifically, the first guide groove 1321 and the second guide groove 1322 are both connected to the bottom of the mounting plate 131 through a guide rail assembly.

[0070] Reference Figure 4 , Figure 5 , Figure 8 and Figure 9 The drive unit 133 includes a first driver 1331 and two moving parts 1332. The two moving parts 1332 are slidably connected to the mounting plate 131 along the axis of symmetry. One moving part 1332 is correspondingly embedded in a guide groove 1323. The first driver 1331 drives the two moving parts 1332 to move synchronously along the guide groove 1323, so as to drive the first guide groove part 1321 and the second guide groove part 1322 to slide along the first direction P, so that the first comb tooth 1211 and the second comb tooth 1212 symmetrically approach or separate.

[0071] The movable component 1332 is slidably connected to the mounting plate 131 along the axis of symmetry and is respectively embedded in the guide grooves 1323 of the first guide groove component 1321 and the second guide groove component 1322. Specifically, both movable components 1332 are connected to the mounting plate 131 through guide rail assemblies.

[0072] When the first driver 1331 is activated, the two moving parts 1332 move synchronously. However, due to the opposite inclination direction of the guide grooves 1323, the lateral displacement of the moving parts 1332 is converted into the reverse movement of the guide grooves along the first direction P. For example, if the moving parts 1332 move in the positive direction of the axis of symmetry, the moving part 1332 embedded in the guide groove 1323 of the first guide groove 1321 will push the first guide groove 1321 to the left, while the moving part 1332 embedded in the guide groove 1323 of the second guide groove 1322 will push the second guide groove 1322 to the right because the guide grooves 1323 are in the opposite inclination direction. This reverse movement directly causes the symmetrical separation or proximity of the first comb tooth 1211 and the second comb tooth 1212 connected to the guide grooves. This design achieves synchronous reverse movement of the two guide grooves with a single driver, simplifying the transmission structure while ensuring the synchronicity of the action. The precise control capability of the drive unit 133 directly determines the response speed and positional accuracy of the combing unit 121 opening and closing, and is the core power source for realizing the standardized adjustment of the gap of the tab 3.

[0073] The entire variable pitch drive module 13 operates as follows: When it is necessary to switch the state of the combing unit 121, the first driver 1331 of the drive unit 133 is activated, driving the two moving parts 1332 to move along the axis of symmetry. The movement of the moving parts 1332 within the guide groove 1323 is converted into the reverse sliding of the guide groove part along the first direction P, thereby driving the first comb teeth 1211 and the second comb teeth 1212 in all combing units 121 to open and close synchronously and symmetrically. For example, the moving parts 1332 move along the guide groove 1323 towards one end closer to the other, causing the combing unit 121 to close, and the width of the comb teeth to shrink to less than the gap of the tabs 3, inserting into the gap. Then, the moving parts 1332 move along the guide groove 1323 towards one end further away from the other, causing the combing unit 121 to open, and the comb teeth to form a standardized combing gap 1213, adjusting the tab spacing 3 through the guiding effect of adjacent comb teeth.

[0074] The advantage of this mechanical linkage design is that, through the inclined direction and symmetrical layout of the guide groove 1323 of the guide groove assembly, the linear motion of a single drive source is transformed into the precise symmetrical motion of the comb teeth, achieving high-precision opening and closing actions without complex multi-axis control. At the same time, the motion of all combing units 121 is synchronously controlled by the same drive unit 133, avoiding arrangement deviations caused by asynchronous local movements and ensuring the uniformity of the gap between the tabs 3.

[0075] The inclined guide groove 1323, through mechanical transmission, transforms the long longitudinal stroke of the moving part 1332 into a short lateral spacing adjustment of the comb teeth. For example, when the moving part 1332 moves longitudinally (e.g., along the axis of symmetry) within the inclined guide groove 1323, its direction of movement, combined with the inclination angle of the guide groove 1323, causes the guide part (connected to the comb teeth) to slide laterally along the tab 3 arrangement direction (first direction P). This structure, through optimization of the inclination angle, "amplifies" or "reduces" a large longitudinal displacement into precise lateral spacing changes, thereby achieving precise control of the comb tooth spacing. The long stroke design provides the system with greater buffer space, reducing hard-limiting impacts caused by excessively short strokes.

[0076] In some embodiments, refer to Figure 9 The movable component 1332 is a guide wheel, which is rotatably connected to the first driver 1331. The guide wheel moves smoothly within the guide groove 1323, reducing vibrations during movement. Specifically, a push plate is connected to the drive end of the first driver 1331. The push plate is movably mounted on the mounting plate 131 along the axis of symmetry of the two guide grooves 1323, and the two guide wheels are rotatably connected to the push plate. That is, the push plate is the connection structure 1335 between the movable component 1332 and the first driver 1331.

[0077] Reference Figure 4 , Figure 5 The first guide groove 1321 is provided with a through groove. One end of each first comb tooth 1211 is inserted into the through groove, and the other end is located outside the through groove. One end of each second comb tooth 1212 is connected to the second guide groove 1322, and the other end extends through the through groove to the exposed end of the first comb tooth 1211. The second comb tooth 1212 can move in the through groove along the first direction P.

[0078] The through-slot design of the first guide groove 1321 ensures coordinated movement of the first comb teeth 1211 and the second comb teeth 1212 between open and closed states, while maintaining the stability and consistency of the bar tabs 3 combing. The through-slots inside the first guide groove 1321 extend along the arrangement direction of the bar tabs 3 (first direction P), and their width and depth are precisely calculated to accommodate the insertion and sliding requirements of the first comb teeth 1211. One end of each first comb tooth 1211 is designed to slidably insert into the through-slot, while the other end extends outside the through-slot, forming the "working end" of the comb tooth.

[0079] One end of the second comb tooth 1212 is fixed to the second guide groove 1322, while the other end passes through the through groove of the first guide groove 1321 and aligns with the exposed end of the first comb tooth 1211. Through this "interlacing" design, the movement path of the second comb tooth 1212 is confined within the through groove, and its direction of movement is completely consistent with that of the first comb tooth 1211. When the variable pitch drive module 13 is activated, the first guide groove 1321 and the second guide groove 1322 slide in opposite directions under the guidance of the guide groove 1323. The first comb tooth 1211 remains stationary relative to the through groove, while the second comb tooth 1212 moves relative to the through groove. Under the guidance of the through groove, the second comb tooth 1212 remains synchronized with the exposed end of the first comb tooth 1211. This design not only achieves symmetrical opening and closing of the two comb teeth but also ensures, through the physical constraint of the through groove, that they remain on the same plane during movement, avoiding the squeezing of the tabs 3 or uneven gaps caused by offset.

[0080] Reference Figure 8 In some embodiments, the drive unit 133 further includes a first limiting component 1333, which includes a first limiting member 13331 and a first adjusting mechanism 13332.

[0081] The first limiting member 13331 is disposed on the mounting plate 131 via the first adjusting mechanism 13332 and is located on the movement path of the connection structure 1335 between the moving member 1332 and the first driver 1331. The first limiting member 13331 is disposed on the movement path of the connection structure 1335 (e.g., a connecting plate) between the moving member 1332 and the driver. This arrangement allows the limiting member to directly "stop" the movement of the moving member 1332, preventing it from exceeding the preset limit position.

[0082] The first adjusting mechanism 13332 is used to adjust the blocking position of the first limiting member 13331 on the movement path, so as to limit the extreme position of the moving member 1332 moving towards the mutual approaching end of the two guide grooves 1323. The function of the first adjusting mechanism 13332 is to adjust the blocking position of the limiting member on the movement path. For example, by means of thread adjustment, slide rail fine adjustment or locking mechanism, the operator can move the limiting member to the desired position, thereby defining the maximum stroke of the moving member 1332 moving towards the "mutually approaching end" (i.e., the opening direction of the guide groove) of the guide groove 1323.

[0083] On the one hand, the first adjustment mechanism 13332 provides physical constraints on the movement range of the moving part 1332, avoiding excessive opening due to driver malfunction or program error, and preventing damage to the guide groove or comb teeth due to excessive separation. On the other hand, through the flexible adjustment of the first adjustment mechanism 13332, the limiting position can be dynamically optimized according to the size of the initial gap of the tabs 3 or production requirements. For example, if the gap of the tabs 3 is wide, the limiting part can be moved towards the end of the guide groove 1323 that is close to each other, allowing the comb teeth to open to a larger gap; conversely, if the tabs 3 are arranged compactly, the limiting part can be adjusted inward to limit the opening amplitude.

[0084] This adjustable limiting mechanism works in conjunction with the inclined design of the guide groove 1323. The inclination angle of the guide groove 1323 determines the conversion relationship between the longitudinal displacement of the moving member 1332 and the lateral spacing of the comb teeth, while the limiting member, by setting the extreme position of the moving member 1332, ultimately determines the maximum spacing when the comb teeth are open. For example, when the first limiting member 13331 is adjusted to a position close to the end of the guide groove 1323, the moving member 1332 can move a longer distance along the guide groove 1323, allowing the guide member to slide to its limit, thereby achieving the maximum opening angle of the comb teeth. This design not only ensures the safety boundary of the operation but also, through the first adjusting mechanism 13332, gives the device the ability to adapt to different tab arrangement densities 3.

[0085] Specifically, the first driver 1331 can be a cylinder, the first limiting member 13331 can be a spring buffer or a hydraulic buffer, and the mounting plate 131 is provided with a limiting block. The first limiting member 13331 is connected to the limiting block by a thread. By adjusting the extension position of the first limiting member 13331 on the limiting block by the thread, the limit position of the moving member 1332 in the guide groove 1323 can be adjusted.

[0086] Reference Figure 8 In some embodiments, the drive unit 133 further includes a second limiting component 1334, which includes a second limiting member 13341 and a second adjusting mechanism 13342.

[0087] The second limiting member 13341 is mounted on the mounting plate 131 via the second adjusting mechanism 13342 and is located on the movement path of the connection structure 1335 between the moving member 1332 and the first driver 1331. The function of the second limiting member 1334 is to limit the movement of the moving member 1332 toward the "mutually distant end" (i.e., the closing direction of the guide groove) of the guide groove 1323. The second limiting member 13341 acts like a "baffle," fixed to the mounting plate 131 via the second adjusting mechanism 13342, and located in front of the movement path of the moving member 1332. When the first driver 1331 drives the moving member 1332 to move in the closing direction, it will stop once it encounters the second limiting member 13341, preventing the comb teeth from excessively compressing the gap of the tabs 3 or even damaging the comb teeth due to excessive closing.

[0088] The second adjustment mechanism 13342 is used to adjust the blocking position of the second limiting member 13341 on the movement path to limit the extreme position of the moving member 1332 moving towards the ends of the two guide grooves 1323 that are far apart from each other. The second adjustment mechanism 13342 allows the operator to adjust the position of the limiting member as needed. For example, if the initial gap of the tabs 3 is small, the limiting member can be adjusted inward to limit the comb teeth to close to the minimum width; if the gap of the tabs 3 is large, it can be adjusted outward to allow for a larger closing space.

[0089] The first limiting component 1333 and the second limiting component 1334 complement each other: the first limiting component 1333 limits the maximum distance the comb teeth open, and the second limiting component 1334 controls the minimum distance the comb teeth close, together defining the action boundary of the combing unit 121. By adjusting the positions of the two limiting components, the device can adapt to the needs of different tab arrangement densities 3, while avoiding mechanical overload or damage to the tabs 3 due to uncontrolled action. For example, if the combing gap 1213 is too small, the first limiting component 13331 can prevent the comb teeth from opening excessively, preventing the ends of the comb teeth from deforming due to squeezing the tabs 3; if the initial gap between the tabs 3 is too small, it allows the comb teeth to close to a narrower width, precisely inserting into the gap.

[0090] The adjustability of the first limiting component 1333 and the second limiting component 1334 enables the variable pitch tab combing device to quickly adapt to parameter changes in production, such as adapting to the differences in tab spacing 3 between different batches of battery cells.

[0091] Reference Figure 3 and Figure 10Furthermore, the multi-axis comb insertion mechanism 1 also includes a resistance detection assembly 14, which includes a fixed plate 141, a sliding guide structure 142, and a resistance detection unit 143. The fixed plate 141 is connected to the moving end of the multi-axis driver 11. The sliding guide structure 142 is disposed between the fixed plate 141 and the mounting plate 131, and the guiding direction of the sliding guide structure 142 is parallel to the axis of symmetry. The resistance detection unit 143 is disposed on the fixed plate 141 and located at the end of the mounting plate 131 away from the combing unit 121, and is used to detect the resistance experienced by the mounting plate 131.

[0092] The function of the resistance detection component 14 is to monitor the changes in resistance encountered during the combing action in real time, thereby avoiding damage caused by the tab 3 getting stuck, shifting, or mechanical overload.

[0093] The fixed plate 141 serves as a base, fixedly connected to the moving end of the multi-axis drive 11, providing stable support for the entire resistance detection system. The sliding guide structure 142 is installed between the fixed plate 141 and the mounting plate 131, with its guiding direction parallel to the axis of symmetry of the two guide grooves 1323. This design allows the mounting plate 131 to slide smoothly in a specified direction, while the rigid constraint of the sliding guide structure 142 converts the resistance experienced by the mounting plate 131 (such as the reaction force when the tab 3 is inserted) into a measurable mechanical signal. Specifically, the sliding guide structure 142 can be a guide rail assembly.

[0094] The resistance detection unit 143 is located at the end of the mounting plate 131 furthest from the combing unit 121, directly facing the fixed plate 141. When the combing assembly 12 moves under the control of the multi-axis driver 11, if it encounters resistance (such as friction when the comb teeth insert into the gap of the tabs 3 or jamming caused by the positional displacement of the tabs 3), the mounting plate 131 will undergo a slight displacement due to the reaction force. The sliding guide structure 142 allows the mounting plate 131 to slide along the guide direction on the fixed plate 141, and the resistance detection unit 143 monitors this displacement or force change in real time. For example, if the detected resistance exceeds a preset threshold, the system can immediately stop or adjust the driver action to prevent excessive force on the comb teeth from causing deformation of the tabs 3 or damage to mechanical parts. Specifically, the resistance detection unit 143 is a pressure sensor or a displacement sensor.

[0095] The advantage of this design lies in combining mechanical motion with resistance feedback, achieving closed-loop control of "active monitoring + dynamic response". The sliding guide structure 142 not only guides the movement direction of the mounting plate 131, but also acts as a medium for force transmission, ensuring accurate capture of resistance signals; while the reverse installation of the resistance detection unit 143 (away from the combing unit 121) avoids direct contact with the tab 3 area, reducing interference. Through this mechanism, the device can automatically identify abnormal resistance (such as tab 3 sticking or insufficient gap) during the combing process, and adjust the action parameters in a timely manner (such as reducing speed or repositioning), which protects the tab 3 and the mechanical structure, and improves the stability and reliability of automated production.

[0096] Reference Figure 10 The resistance detection assembly 14 also includes a guide rod 144 and an elastic buffer 145.

[0097] One end of the guide rod 144 is connected to the resistance detection unit 143, and the other end passes through the guide hole of the mounting plate 131 and extends along the direction of the axis of symmetry.

[0098] An elastic buffer 145 is disposed between the mounting plate 131 and the resistance detection unit 143, and is used to allow the mounting plate 131 to move axially along the guide rod 144 when it is subjected to resistance, so as to buffer the impact force when the first comb tooth 1211 and / or the second comb tooth 1212 are inserted into the gap of the tab 3.

[0099] The guide rod 144 provides precise guidance for the movement of the mounting plate 131. When the comb teeth are inserted into the gap of the tabs 3, if resistance is encountered (such as the tabs 3 shifting or jamming), the mounting plate 131 will slide axially along the guide rod 144 due to the reaction force. The rigid constraint of the guide rod 144 ensures that this movement is strictly along the axis of symmetry, avoiding lateral shifting or tilting, thereby protecting the stability of the mechanical structure. For example, if the comb teeth are obstructed by the tabs 3 sticking, the mounting plate 131 can only slide linearly along the guide rod 144, rather than twisting or jamming. This design significantly reduces the risk of damage to mechanical components.

[0100] An elastic buffer 145 (such as a spring or elastic rubber pad) is installed between the mounting plate 131 and the resistance detection unit 143. Its function is to absorb impact energy and provide buffer space. When the mounting plate 131 slides due to resistance, the elastic buffer 145 is compressed or stretched, converting the impact force into elastic potential energy, thereby reducing the direct impact on the comb teeth and tabs 3. For example, when the comb teeth quickly insert into the gap of the tabs 3, the elastic buffer 145 can alleviate the instantaneous impact force, avoiding deformation of the tabs 3 or breakage of the comb teeth due to hard collision. At the same time, the degree of deformation of the buffer is proportional to the magnitude of the resistance. This information is transmitted to the resistance detection unit 143 through the guide rod 144, enabling it to more sensitively capture details of resistance changes (such as sudden increases or decreases), thereby triggering the system to adjust the action parameters in a timely manner (such as deceleration or repositioning). In some embodiments, the elastic buffer 145 is a spring, which is fitted onto the guide rod 144.

[0101] Reference Figure 6 In some embodiments, the ends of the first comb tooth 1211 and the second comb tooth 1212 are provided with guide slopes 1214. The guide slopes 1214 of the first comb tooth 1211 and the guide slopes 1214 of the second comb tooth 1212 are inclined in opposite directions. When the combing unit 121 is in the closed state, the guide slopes 1214 of the first comb tooth 1211 and the second comb tooth 1212 approach each other and form sharp ends to guide the combing unit 121 to be inserted into the gap of the tab 3.

[0102] The guide bevels 1214 at the ends of the comb teeth are inclined in opposite directions (for example, the bevel of the first comb tooth 1211 is inclined to the lower left, and the bevel of the second comb tooth 1212 is inclined to the lower right). When the combing unit 121 is in the closed state, the two comb teeth approach each other, and the tips of the bevel ends "close" to form a sharp, blade-like end. The width of this sharp end is smaller than the gap between the tabs 3, and it is precisely inserted into the gap between the tabs 3 like a "sword tip".

[0103] The pointed tip reduces the contact area with the tab 3, lowering resistance during insertion and preventing wrinkles or scratches on the tab 3 caused by rough contact in traditional clamps. Conversely, the inclined bevel forms a "V"-shaped guide when closed, ensuring the comb teeth slide in along the center line of the tab 3 gap, improving alignment accuracy. The tip design requires only minimal force to penetrate the gap, preventing deformation or breakage of the tab 3 due to squeezing or clamping. Even with slight deviations in the tab 3 gap, the guiding effect of the bevel helps the comb teeth automatically adjust their angle and smoothly enter the gap.

[0104] Reference Figure 1 and Figure 11 The variable pitch tab combing device also includes a pre-shaping component 2, which is located upstream of the cell conveying path and at the station before the combing component 12. The pre-shaping component 2 includes a shaping component 21 and a second driver 22.

[0105] The shaping component 21 includes a plurality of spaced teeth 211, which are spaced apart along the arrangement direction of the tabs 3. One end of the teeth 211 is connected to the second driver 22, and the other end faces the gap between the aluminum-plastic film sealing edge of the tabs 3. The cross-sectional width of the teeth 211 gradually decreases from the root to the other end, and the spacing of the teeth 211 matches the thickness of the battery cell.

[0106] The shaping component 21 is the core execution structure of the pre-shaping assembly 2, and it employs multiple spaced teeth 211. These teeth 211 are evenly distributed along the arrangement direction of the tabs 3, and the cross-sectional width of each tooth 211 gradually decreases from the root to the tip, forming a V-shape. This design ensures the guidance of the teeth 211 when inserted into the battery cell (the narrow tip facilitates precise positioning), and reduces local pressure on the aluminum-plastic film sealing edge through the gradual width, avoiding material deformation or damage due to excessive compression. The spacing of the teeth 211 is precisely calculated to match the thickness of the battery cell, ensuring that each tooth 211 can accurately align with the gap between adjacent battery cells, while reserving space for the subsequent intervention of the combing assembly 12.

[0107] The second actuator 22 is used to drive the teeth 211 to insert between the battery cells. The teeth 211 squeeze or push the aluminum-plastic film sealing edge of the battery cells to adjust the spacing or alignment deviation of the tabs 3. The second actuator 22 acts as a power source, controlling the movement trajectory of the shaping component 21. Its working principle is as follows: when the battery cells are transported to the pre-shaping station, the second actuator 22 drives the shaping component 21 forward along a direction perpendicular to the tab arrangement direction (such as the Y-axis), causing the tips of the teeth 211 to insert into the gap between the aluminum-plastic film sealing edges of the battery cells. At this time, the tapered design of the teeth 211 gradually adjusts the shape of the aluminum-plastic film sealing edge through squeezing or pushing actions, thereby correcting the uneven spacing or misalignment of the tabs 3 caused by battery cell stacking or transport deviations. For example, if the tab spacing is too narrow at a certain point, the insertion of the teeth 211 can "spread" the aluminum-plastic film sealing edge outwards; if the spacing is too wide, it is contracted through pushing actions, ultimately making the tab arrangement reach the reference state required by the combing assembly 12. This process is achieved through non-contact compression, avoiding potential damage caused by traditional clamps directly gripping the tab 3. Specifically, the second actuator 22 can be a cylinder or a linear motor.

[0108] In the tab 3 combing process, the pre-shaping component 2 and the combing component 12 achieve precise alignment of the tabs 3 through step-by-step processing. The pre-shaping component 2 is located upstream of the cell transport path. The cell is transported to the station of the pre-shaping component 2 via a conveyor mechanism (e.g., a double-speed chain). The pre-shaping component 2 inserts its teeth 211 into the gap of the aluminum-plastic film sealing edge of the cell, squeezing or pushing the sealing edge to roughly adjust the spacing and alignment deviation of the tabs 3. This stage corrects the initial deviation through non-contact squeezing, avoiding damage caused by directly clamping the tabs 3, and laying the foundation for subsequent combing.

[0109] After pre-adjustment, the battery cell is conveyed to the combing assembly 12. The multi-axis driver 11 controls the combing unit 121 to be precisely inserted into the gap in a closed state (the width of the comb teeth is less than the gap between the tabs 3), and the guide bevel 1214 at the end guides it smoothly into the gap. After insertion, the comb teeth open to form a standardized gap, and the adjacent comb teeth work together to constrain the tabs 3, achieving standardized spacing. Finally, the combing assembly 12 moves up and down along the Z-axis, and the vertical alignment of the tabs 3 is further corrected through the up-and-down movement. There is no clamping force throughout the process; the arrangement is adjusted only through the guide gap, ensuring high-precision consistency of the tabs 3 in both the horizontal and vertical directions.

[0110] Pre-shaping eliminates most initial deviations and reduces the adjustment complexity of the combing assembly 12. The combing assembly 12 achieves final finishing through three-dimensional motion and dynamic pitch variation, reducing the risk of cell damage and ensuring the accuracy and yield of the adapter board installation. This process balances efficiency and reliability, providing a stable solution for automated production.

[0111] In the variable-pitch tab combing device, a pre-shaping component 2 can be provided as one set. By inserting the teeth 211 into the gap between the battery cells on one side, the gap between the battery cells can be preliminarily adjusted, facilitating the subsequent insertion of the combing unit 121 into the tabs 3. Alternatively, two sets of pre-shaping components 2 can be provided, located on both sides of the battery cells respectively. By inserting the teeth 211 into the gap between the battery cells from both sides, the gap between the battery cells can be adjusted, facilitating the subsequent insertion of the combing unit 121 into the tabs 3.

[0112] Similarly, in the variable-pitch tab combing device, a multi-axis comb insertion mechanism 1 can be provided in one set. By inserting the combing unit 121 into the tabs 3 on one side (the length of a single comb tooth needs to penetrate the gap between the battery cells), the gap between the tabs 3 is adjusted. Alternatively, two sets of the multi-axis comb insertion mechanism 1 can be provided, located on both sides of the battery cell. By inserting the combing unit 121 from both sides into the tabs 3 (the total length of the two comb teeth inserted into the gap between the battery cells is less than the gap length), the gap between the tabs 3 is adjusted, facilitating the subsequent insertion of the combing unit 121 into the tabs 3.

[0113] This application also provides a battery cell production system, including the variable-pitch tab combing device in any of the above embodiments.

[0114] The battery cell production system of this application includes the variable pitch tab combing device in any of the above embodiments, and therefore has the beneficial effects brought by the variable pitch tab combing device in any of the above embodiments, which will not be repeated here.

[0115] The above description is merely a preferred embodiment of this application and is not intended to limit this application. Any modifications, equivalent substitutions, and improvements made within the spirit and principles of this application should be included within the protection scope of this application.

Claims

1. A variable-pitch electrode combing device, characterized in that, Includes a multi-axis comb insertion mechanism, the multi-axis comb insertion mechanism comprising: A combing assembly includes multiple combing units arranged at equal intervals along a first direction, which is parallel to the arrangement direction of the battery cell tabs. The number of combing units is greater than the number of tabs. Each combing unit includes a first comb tooth and a second comb tooth arranged side by side along the first direction. The combing unit has a closed state and an open state. When the combing unit is in the closed state, the first comb tooth and the second comb tooth in the same combing unit are close to each other, and the width of the combing unit is smaller than the gap width between the tabs to allow insertion into the tab gap. When the combing unit is in the open state, the first comb tooth and the second comb tooth in the same combing unit are far apart from each other, and a non-clamping combing gap is formed between the first comb tooth and the second comb tooth of the adjacent combing unit. The combing gap is greater than the thickness of the tab. The variable-pitch drive module is used to drive each of the combing units to synchronously switch between a closed state and an open state; and A multi-axis driver is used to drive each of the combing units to move synchronously in three-dimensional space.

2. The variable-pitch electrode combing device according to claim 1, characterized in that, The variable pitch drive module includes: Mounting plate, fixed to the moving end of the multi-axis driver; The symmetrical guide groove assembly includes a first guide groove and a second guide groove, which are slidably connected to the mounting plate along a first direction. The first guide groove is connected to each of the first comb teeth, and the second guide groove is connected to each of the second comb teeth. The first guide groove and the second guide groove are respectively provided with inclined guide grooves. The inclination directions of the two guide grooves are opposite, and they are symmetrically arranged with a symmetry axis as the center. The symmetry axis is perpendicular to the first direction. The driving unit includes a first driver and two moving parts. The two moving parts are slidably connected to the mounting plate along the axis of symmetry. One of the moving parts is correspondingly embedded in a guide groove. The first driver drives the two moving parts to move synchronously along the guide groove, so as to drive the first guide groove member and the second guide groove member to slide along the first direction, so that the first comb tooth and the second comb tooth symmetrically approach or separate.

3. The variable-pitch electrode combing device according to claim 2, characterized in that, The first guide groove component is provided with a through groove; One end of each of the first comb teeth is inserted into the through groove, and the other end is located outside the through groove; One end of each of the second comb teeth is connected to the second guide groove, and the other end extends through the through groove to the exposed end of the first comb tooth. The second comb tooth can move in the through groove along the first direction.

4. The variable-pitch electrode combing device according to claim 2, characterized in that, The driving unit further includes a first limiting component, the first limiting component comprising: The first limiting member is disposed on the mounting plate by the first adjusting mechanism and is located on the movement path of the connection structure between the moving member and the first driver; The first adjustment mechanism is used to adjust the blocking position of the first limiting member on the movement path to limit the extreme position of the moving member moving toward the end of the two guide grooves that are close to each other.

5. The variable-pitch electrode combing device according to claim 2, characterized in that, The driving unit further includes a second limiting component, the second limiting component comprising: The second limiting member is disposed on the mounting plate via the second adjustment mechanism and is located on the movement path of the connection structure between the moving member and the first driver; The second adjustment mechanism is used to adjust the blocking position of the second limiting member on the movement path to limit the extreme position of the moving member moving toward the ends of the two guide grooves that are far apart from each other.

6. The variable-pitch electrode combing device according to claim 2, characterized in that, The multi-axis comb insertion mechanism further includes a resistance detection component, which comprises: A fixed plate is connected to the moving end of the multi-axis driver; A sliding guide structure is provided between the fixed plate and the mounting plate, and the guiding direction of the sliding guide structure is parallel to the axis of symmetry; A resistance detection unit is disposed on the fixed plate and located at the end of the mounting plate away from the combing unit, and is used to detect the resistance experienced by the mounting plate.

7. The variable-pitch electrode combing device according to claim 6, characterized in that, The resistance detection component also includes: The guide rod has one end connected to the resistance detection unit and the other end passing through the guide hole of the mounting plate and extending along the direction of the axis of symmetry. An elastic buffer is disposed between the mounting plate and the resistance detection unit, which allows the mounting plate to move axially along the guide rod when it is subjected to resistance, so as to buffer the impact force when the first comb tooth and / or the second comb tooth is inserted into the tab gap.

8. The variable-pitch electrode combing device according to claim 1, characterized in that, The ends of the first comb tooth and the second comb tooth are provided with guide slopes, and the inclination direction of the guide slopes of the first comb tooth and the guide slopes of the second comb tooth are opposite. When the combing unit is in the closed state, the guide bevels of the first and second comb teeth approach each other and form sharp ends to guide the combing unit into the tab gap.

9. The variable-pitch electrode combing device according to claim 1, characterized in that, The variable-pitch tab combing device further includes a pre-shaping component, which is located upstream of the cell conveying path and at the station before the combing component. The pre-shaping component includes: The shaping component includes a plurality of spaced teeth, which are spaced apart along the tab arrangement direction. One end of each tooth is connected to a second driver, and the other end faces the gap between the aluminum-plastic film sealing edges of the tabs. The cross-sectional width of the teeth gradually decreases from the root to the other end, and the spacing between the teeth matches the thickness of the battery cell. The second driver is used to drive the teeth to insert between the battery cells, and to adjust the spacing or alignment deviation of the tabs by squeezing or pushing the aluminum-plastic film sealing edge of the battery cells through the teeth.

10. A battery cell production system, characterized in that, Includes the variable-pitch bar combing device as described in any one of claims 1 to 9.

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