A manufacturing apparatus and process for a composite current collector

Abstract

This invention relates to the field of manufacturing technology for key components of lithium-ion batteries, and in particular to a manufacturing equipment and process for composite current collectors. The equipment includes an unwinding device with multiple guide rollers along its path for feeding material, and a winding device at the end of the equipment for pulling and winding. The invention utilizes multiple first mounting slots on the rollers, each housing a mounting frame. Second mounting slots are provided on the mounting frames, housing mounting blocks. A perforation assembly is then installed in a first connecting slot on each mounting block. This perforation assembly perforates the composite current collector. Since the composite current collector requires complete or partial perforation, an adjustable component is provided on a sliding groove to adjust the vertical movement of the perforation assembly. By installing a perforation assembly on each mounting block, damaged perforation assemblies can be replaced individually after long-term use.

Description

Technical Field

[0001] This invention relates to the field of manufacturing technology for key components of lithium-ion batteries, and in particular to a composite current collector manufacturing equipment and process. Background Technology

[0002] Current collectors are the core components in battery systems that carry the active materials of the electrodes and collect current. In lithium-ion batteries, aluminum foil is used for the positive electrode and copper foil for the negative electrode as traditional current collector materials, while sodium-ion batteries use aluminum foil for both the positive and negative electrodes to reduce costs. Composite current collectors, through a three-layer structure design of metal-polymer-metal, demonstrate technological breakthroughs in improving battery energy density (by 5.89%-10%) and safety (by improved short-circuit breaking rate).

[0003] As one of the core components of a secondary battery, the current collector's main function is to carry the active material, collect and transmit current. Its performance directly affects the battery's rate performance, cycle life, and safety. Traditional current collectors (such as copper foil and aluminum foil) are mostly dense sheet structures. Although they have good conductivity, the transport of electrolyte inside the electrode is greatly hindered, and the contact between the active material and the electrolyte is insufficient.

[0004] To address this issue, existing technologies have developed solutions for perforating current collectors, often using microneedle rollers for perforation. However, these solutions have certain drawbacks: they cannot adjust the perforated part, and the perforating tool cannot be replaced individually. Summary of the Invention

[0005] Other features and advantages of the invention will be set forth in the description which follows, and will be apparent in part from the description, or may be learned by practicing the invention. The objects and other advantages of the invention may be realized and obtained by means of the structures particularly pointed out in the description and other accompanying drawings.

[0006] The purpose of this invention is to overcome the above-mentioned shortcomings and provide a device for manufacturing composite current collectors to solve the existing problems.

[0007] To achieve the above objectives, the technical solution of the present invention is: a composite current collector manufacturing device, comprising an unwinding device, wherein multiple guide rollers are arranged along the unwinding device for feeding material, and a winding device is used at the end of the device to pull and wind the material. A perforation device is provided in the feeding process, the perforation device comprising a perforating roller, the perforating roller having multiple first mounting grooves, a mounting frame being installed in the first mounting groove, a second mounting groove being provided on the mounting frame, multiple mounting blocks being installed along the path in the second mounting groove, the mounting blocks having first connecting grooves, a perforation assembly being installed in the first connecting grooves, sliding grooves being provided on both sides of the first mounting grooves, and up-down adjustment components being installed in the sliding grooves. A heating device is installed on one side of the unwinding device.

[0008] In some embodiments, the up-down adjustment assembly includes an up-down adjustment plate, which is installed in the corresponding sliding groove. The up-down adjustment plate is connected to a push frame, which is installed in the bottom of the mounting frame and communicates with the sliding groove. Threaded holes are provided at the front, middle, and rear positions of the bottom of the mounting frame, and an adjustment rod is installed on the push frame at a position opposite to the threaded holes.

[0009] In some embodiments, a movable plate is installed in the first connecting groove, and the movable plate is connected to the first connecting groove by a first spring. The perforation assembly includes a base, which is provided with a slot that matches the sliding groove and the first connecting groove for installation. The bottom of the base is fixed to the movable plate, and a placement groove is installed on the top of the base. A perforated plate is installed in the placement groove, and the perforated plate is fixed in the placement groove by a second screw.

[0010] In some embodiments, a front-to-back adjustment assembly is mounted on the mounting bracket. The front-to-back adjustment assembly includes a threaded rod, which is installed in the mounting bracket. A connecting groove is provided at the bottom of the first mounting slot. The mounting block is threadedly connected to the threaded rod through the connecting groove. One end of the threaded rod is connected to a rotating assembly. The mounting bracket has first bearings at both ends of the threaded rod, and the first bearings are connected to both ends of the threaded rod.

[0011] In some embodiments, the rotating assembly includes a rotating member mounted on the outer end of the perforated roller corresponding to the first mounting groove, the rotating member mounting a rotating rod, the rotating rod being mounted on a second bearing mounted on the perforated roller, and the rotating rod being connected to the threaded rod.

[0012] In some embodiments, the rotating rod includes a hollow rod connected to the second bearing. The hollow rod has a mounting ring, and a second spring is mounted on the mounting ring. The second spring is clamped by a protrusion on the rotating rod installed in the hollow rod. A connector is installed between the rotating rod and the threaded rod.

[0013] In some embodiments, the connector includes a second connecting block and a third connecting block, the second connecting block being mounted on one end of the threaded rod, and the third connecting block being mounted on one end of the rotating rod, wherein the third connecting block has a groove that matches the second connecting block.

[0014] In some embodiments, disassembly components are installed at both ends of the first mounting slot. Each disassembly component includes a mounting component. The opposite end faces of the mounting components at both ends are respectively provided with a second connecting slot and a third connecting slot. The second connecting slot is located on the mounting component position near the inner side of the first mounting slot wall, and the third connecting slot is located on the mounting component position near the outer side of the first mounting slot wall. The bottom of the third connecting slot is provided with an opening. The opposite ends of the mounting bracket are respectively provided with first connecting blocks that match the second connecting slot and the third connecting slot. The first connecting blocks that match the third connecting slot are used to install the mounting bracket in the first mounting slot by first screws.

[0015] In some embodiments, a cover plate is installed at the outer end of the perforated roller.

[0016] This invention also provides a manufacturing process for a composite current collector, comprising:

[0017] S1: Determine the substrate type based on the application scenario, and then perform cleaning and impurity removal;

[0018] S2: Then the substrate processed in step S1 is placed on the unwinding device, and then wound along the guide rollers onto the perforating device, and then wound onto the winding device to form a material feeding route.

[0019] S3: Then start the perforation device to perforate the composite current collector, and at the same time use the heating device to heat and perforate according to the material;

[0020] S4: Adjust the perforation components according to the application scenario, perform the corresponding perforation as required, and then clean.

[0021] S5: Place the perforated and cleaned substrate in a vacuum drying oven, cut it into rolls of fixed size according to production requirements, and deburr the edges.

[0022] S6: Sputter a layer onto the surface of the polymer substrate, while this step can be omitted for metal foil substrates;

[0023] S7: Then, prepare the materials for the functional layer. They must be compatible with the perforated substrate to avoid the plating solution from seeping into the holes and causing blockage. Finally, complete the perforation process.

[0024] By adopting the above technical solution, the beneficial effects of the present invention are:

[0025] 1. This invention places a composite current collector on an unwinding device, then winds it along a guide roller onto a perforating device, and finally winds it onto a winding device, forming a material path. During the pulling process, the composite current collector is perforated by roller pressing. When the composite current collector moves to the perforating roller, multiple first mounting slots are set on the roller, each containing a mounting frame. Second mounting slots are set on the mounting frames, containing mounting blocks. A perforating assembly is then installed in a first connecting slot on the mounting block. The perforating assembly perforates the composite current collector. Since the composite current collector needs to be completely or partially perforated, an adjustable component is provided on the sliding groove to adjust the vertical movement of the perforating assembly. By installing a perforating assembly on each mounting block, damaged perforating assemblies can be replaced individually after long-term use.

[0026] 2. By pushing the upper and lower adjusting plates with the pusher frame, the upper and lower adjusting plates move the perforating assembly up and down. Then, the adjusting rod installed on the pusher frame is threadedly connected to the corresponding threaded hole at the bottom of the mounting frame. This allows for two modes: when the adjusting rod and the threaded hole are fully connected, the pusher frame will rise to its highest point and completely penetrate the composite current collector; or the adjusting rod will be rotated until the pusher frame can no longer move, which will place the perforating assembly at its lowest position for incomplete perforation. At the same time, when the pusher frame can no longer move, the adjusting rod and the threaded hole are not separated. This is to prevent the pusher frame from moving back and forth during the rotation of the perforating roller.

[0027] 3. To ensure the vertical movement of the perforated assembly, a movable plate can be installed in the first connecting slot. Then, the first spring and the first connecting slot are connected. Since the two ends of the base are pressed against the vertical adjustment plate, the base can be pushed up when the vertical adjustment plate moves up and down, which in turn pushes the perforated plate up. At the same time, the movable plate will be stretched. When it is lowered for adjustment, the spring will be used to reset the pull. Then, the perforated plate is fixed to the base with the second screw. This allows the perforated plate to be removed and replaced separately in the future.

[0028] 4. Since existing perforation equipment cannot adjust the perforation position, it can be adjusted using a front-to-back adjustment component. This allows the mounting block to move and the perforation plate to the desired position. The front-to-back adjustment component mainly includes two position adjustments. Specifically, a rotating component drives a threaded rod to rotate, causing the threaded rod to slide the mounting block in the mounting groove. Simultaneously, the mounting blocks can be connected in series for synchronous movement. This allows the head mounting block to fit against or move away from the groove wall, while the tail mounting block fits against the groove wall, thus adjusting the two positions for perforation at different locations. There can be one mounting block, multiple perforation components on the mounting block, or multiple mounting blocks can be moved flexibly without being connected in series. Fine-tuning can be achieved by controlling the number of rotations. Furthermore, during movement, because the two ends of the base are not fixed in the sliding groove, the mounting block's movement is limited.

[0029] 5. A rotating rod and a threaded rod can be connected. Rotating the rotating rod will cause the threaded rod to rotate, thus moving the mounting block. Markings can be set on the rotating rods to ensure that each rotating rod rotates the same number of times. Observe the distance the mounting block moves. Alternatively, markings can be omitted, as this ensures that the mounting block moves from one end to the other end, so that the other end is in contact with the mounting groove wall. Setting two sets of moving distances can also ensure that the position of each mounting block is the same. At the same time, the drilling positions of adjacent mounting blocks can be different to practice a wavy drilling method.

[0030] 6. The connector can be made of two connecting blocks, which can be inserted into each other. When the rotating rod is pressed, the second connecting block can be inserted into the groove of the third connecting block to make a connection. When inserting, it is necessary to rotate to align the insertion and then rotate to adjust. This can also ensure that rotation does not occur during operation.

[0031] It should be understood that the above general description and the following detailed description are exemplary and explanatory only, and are not intended to limit this disclosure.

[0032] Undoubtedly, such and other objects of the present invention will become more apparent after the following detailed description of the preferred embodiments, which are illustrated in various accompanying drawings and figures.

[0033] To make the above and other objects, features and advantages of the present invention more apparent and understandable, one or more preferred embodiments are described below in detail with reference to the accompanying drawings. Attached Figure Description

[0034] The accompanying drawings are provided to further illustrate the invention and form part of the specification. They are used in conjunction with the embodiments of the invention to explain the invention and do not constitute a limitation thereof.

[0035] In the accompanying drawings, the same parts use the same reference numerals, and the drawings are schematic and not necessarily drawn to actual scale.

[0036] To more clearly illustrate the technical solutions in the embodiments of the present invention or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only one or more embodiments of the present invention. For those skilled in the art, other drawings can be obtained based on such drawings without creative effort.

[0037] Figure 1 This is a schematic diagram of the manufacturing equipment according to some embodiments of the present invention;

[0038] Figure 2 This is a schematic diagram of the perforation device according to some embodiments of the present invention;

[0039] Figure 3 This is a schematic diagram of the mounting bracket structure according to some embodiments of the present invention;

[0040] Figure 4 This is a schematic diagram of the installation structure of the mounting block according to some embodiments of the present invention;

[0041] Figure 5 This is a schematic diagram of the structure of a rotating component according to some embodiments of the present invention;

[0042] Figure 6 This is a schematic diagram of the pusher frame installation structure according to some embodiments of the present invention;

[0043] Figure 7 This is a schematic diagram of the structure of the connector in some embodiments of the present invention;

[0044] Figure 8 This is a flowchart illustrating the manufacturing process of some embodiments of the present invention.

[0045] Explanation of reference numerals in the attached figures:

[0046] 1. Unwinding device;

[0047] 2. Perforation device; 21. Perforating roller; 22. First mounting groove; 23. Mounting bracket; 231. Second mounting groove; 232. Mounting block; 233. First connecting groove; 234. Perforation assembly; 235. Base; 236. Placement groove; 237. Perforated plate; 238. Second screw; 24. Sliding groove; 25. Movable plate; 26. First spring;

[0048] 3. Up and down adjustment assembly; 31. Up and down adjustment plate; 32. Push frame; 33. Adjustment rod; 34. Threaded hole;

[0049] 4. Front and rear adjustment assembly; 41. Threaded rod; 42. Connecting groove; 43. First bearing;

[0050] 5. Rotating assembly; 51. Rotating component; 52. Rotating rod; 521. Hollow rod; 522. Mounting ring; 523. Second spring; 524. Rotating rod; 53. Second bearing;

[0051] 6. Disassembly component; 61. Mounting component; 62. Second connecting groove; 63. Third connecting groove; 64. Opening; 65. First connecting block; 66. First screw;

[0052] 7. Connector; 71. Second connecting block; 72. Third connecting block; 73. Groove;

[0053] 8. Cover plate;

[0054] 9. Heating device. Detailed Implementation

[0055] To make the objectives, technical solutions, and advantages of this invention clearer, the invention will be further described in detail below with reference to specific embodiments. It should be understood that the specific embodiments described herein are merely illustrative of the invention and are not intended to limit the invention.

[0056] Furthermore, in the description of this invention, it should be understood that the terms "center," "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," "outer," "axial," "radial," and "circumferential" 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 invention 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 invention.

[0057] In this invention, unless otherwise explicitly specified and limited, the terms "installation," "connection," "linking," and "fixing," etc., should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral unit; they can refer to a direct connection or an indirect connection through an intermediate medium; they can refer to the internal communication of two components or the interaction between two components. However, specifying a direct connection indicates that the two main bodies are not connected through a transitional structure, but rather formed as a whole through a connecting structure. Those skilled in the art can understand the specific meaning of the above terms in this invention according to the specific circumstances.

[0058] In this invention, unless otherwise expressly specified and limited, the first feature "on" or "below" the second feature may be in direct contact with the first and second features, or indirect contact through an intermediate medium. In the description of this specification, references to terms such as "one embodiment," "some embodiments," "example," "specific example," or "some examples," etc., indicate that a specific feature, structure, material, or characteristic described in connection with that embodiment or example is included in at least one embodiment or example of the invention. In this specification, the illustrative expressions of the above terms do not necessarily refer to the same embodiment or example. Furthermore, the specific features, structures, materials, or characteristics described may be combined in any suitable manner in one or more embodiments or examples.

[0059] The specific embodiments of the present invention will now be described with reference to the accompanying drawings.

[0060] Reference Figures 1-3 This invention provides a composite current collector manufacturing device, including an unwinding device 1. The unwinding device 1 has multiple guide rollers along its path for feeding material. At the end of the device, a winding device pulls and winds the material. A perforating device 2 is provided in the feeding path. The perforating device 2 includes a perforating roller 21. The perforating roller 21 has multiple first mounting grooves 22. A mounting frame 23 is installed in the first mounting groove 22. The mounting frame 23 has a second mounting groove 231. Multiple mounting blocks 232 are installed along the path in the second mounting groove 231. The mounting blocks 232 have a first connecting groove 233. A perforating component 234 is installed in the first connecting groove 233. Sliding grooves 24 are provided on both sides of the first mounting groove 22. Up and down adjustment components 3 are installed in the sliding grooves 24. A heating device 9 is installed on one side of the unwinding device 1.

[0061] Specifically, the composite current collector is placed on the unwinding device 1 and then wound onto the perforating device 2 via guide rollers, and then wound onto the winding device to form a material path. During the pulling process, the composite current collector is perforated by roller pressing. When the composite current collector moves to the perforating roller 21, multiple first mounting grooves 22 are provided on the roller, and mounting frames 23 are installed in each of the first mounting grooves 22. Second mounting grooves 231 are provided on the mounting frames 23, and mounting blocks 232 are installed in the second mounting grooves 231. Then, a perforating assembly 234 is installed in the first connecting groove 233 provided on the mounting block 232. The perforating assembly 234 is used to perforate the composite current collector, because the composite current collector needs to be completely perforated. In cases of complete or partial penetration, an adjustable component 3 is provided on the sliding groove 24 to adjust the vertical movement of the perforation component 234, thereby achieving the adjustment purpose. Then, by installing the perforation component 234 on each mounting block 232, the damaged perforation component 234 can be replaced individually after long-term use. In addition, the composite current collector has great toughness, making it difficult to puncture. At the same time, some current collectors may experience material rebound after puncture, resulting in the through hole becoming smaller or being covered again. Therefore, a heating device 9 is provided to heat the current collector, thereby increasing its temperature and reducing the difficulty of penetration and solidifying the current collector, thus alleviating the situation where the through hole becomes smaller or is covered again.

[0062] Reference Figure 4 According to some embodiments of the present invention, optionally, the up-down adjustment assembly 3 includes an up-down adjustment plate 31, the up-down adjustment plate 31 is installed in the corresponding sliding groove 24, the up-down adjustment plate 31 is connected to the push frame 32, the push frame 32 is installed in the bottom of the mounting frame 23 and communicates with the sliding groove 24, the bottom of the mounting frame 23 is provided with threaded holes 34 at the front, middle and rear positions, and the push frame 32 is installed with an adjustment rod 33 at the position opposite to the threaded holes 34.

[0063] The up-and-down adjustment component 3 mainly adjusts the perforation requirements by moving the perforation component 234 up and down through the up-and-down adjustment plate 31 installed in the sliding groove 24. Specifically, the pusher 32 pushes the up-and-down adjustment plate 31, which in turn moves the perforation component 234 up and down. Then, the adjustment rod 33 installed on the pusher 32 is threadedly connected to the corresponding threaded hole 34 at the bottom of the mounting frame 23. This allows for two modes: when the adjustment rod 33 and the threaded hole 34 are fully connected, the pusher 32 will rise to its highest point and completely penetrate the composite current collector; or the adjustment rod 33 will be rotated until the pusher 32 can no longer move, which will place the perforation component 234 at its lowest position for incomplete perforation. At the same time, when the pusher 32 can no longer move, the adjustment rod 33 and the threaded hole 34 are not separated. This is to prevent the pusher 32 from moving back and forth during the rotation of the perforation roller 21.

[0064] Reference Figure 4 According to some embodiments of the present invention, optionally, a movable plate 25 is installed in the first connecting groove 233, and the movable plate 25 is connected to the first connecting groove 233 by a first spring 26. The perforated assembly 234 includes a base 235, which is provided with a slot that matches the sliding groove 24 and the first connecting groove 233 for installation. The bottom of the base 235 is fixed on the movable plate 25, and a placement groove 236 is installed on the top of the base 235. A perforated plate 237 is installed in the placement groove 236, and the perforated plate 237 is fixed in the placement groove 236 by a second screw 238.

[0065] To ensure the vertical movement of the perforated assembly 234, a movable plate 25 can be installed in the first connecting groove 233. Then, the first spring 26 is used to connect the first connecting groove 233. Since the two ends of the base 235 are pressed against the vertical adjustment plate 31, the base 235 can be pushed upward when the vertical adjustment plate 31 moves up and down, so that the base 235 pushes the perforated plate 237 upward. At the same time, the movable plate 25 will be stretched. When it is lowered for adjustment, the spring will be used to reset the pull. Then, the perforated plate 237 is fixed to the base 235 by the second screw 238. In this way, the perforated plate 237 can be removed and replaced separately in the future.

[0066] Reference Figure 3 , Figure 4 and Figure 6According to some embodiments of the present invention, optionally, a front-to-back adjustment assembly 4 is installed on the mounting bracket 23. The front-to-back adjustment assembly 4 includes a threaded rod 41, which is installed in the mounting bracket 23. A connecting groove 42 is provided at the bottom of the first mounting groove 22. The mounting block 232 is threadedly connected to the threaded rod 41 through the connecting groove 42. One end of the threaded rod 41 is connected to the rotating assembly 5. The mounting bracket 23 is provided with first bearings 43 at both ends of the threaded rod 41, and the first bearings 43 are connected to both ends of the threaded rod 41.

[0067] Because existing perforation equipment cannot adjust the perforation position, it can be adjusted using the front-to-back adjustment component 4. This allows the mounting block 232 to move and the perforated plate 237 to the desired position. The front-to-back adjustment component 4 mainly includes two position adjustments. Specifically, the rotating component 5 drives the threaded rod 41 to rotate, causing the threaded rod 41 to slide the mounting block 232 in the mounting groove. At the same time, the mounting blocks 232 can be connected in series to move synchronously. This allows the head mounting block 232 to fit against or move away from the groove wall, while the tail mounting block 232 fits against the groove wall. This allows for two position adjustments to perform perforation at different positions. The mounting block 232 can be a single unit, or multiple perforation components 234 can be set on the mounting block 232. Alternatively, multiple mounting blocks 232 can be moved flexibly without being connected in series. The number of rotations can be controlled for fine adjustment. In addition, during the movement, because the two ends of the base 235 are not fixed in the sliding groove, the movement of the mounting block 232 can be limited.

[0068] Reference Figure 4 According to some embodiments of the present invention, optionally, the rotating assembly 5 includes a rotating member 51 mounted on the outer end of the perforated roller 21 corresponding to the first mounting groove, the rotating member 51 is mounted with a rotating rod 52, the rotating rod 52 is mounted on a second bearing 53 mounted on the perforated roller 21, and the rotating rod 52 is connected to the threaded rod 41.

[0069] The rotating component 5 can be operated by connecting the rotating rod 52 and the threaded rod 41. Rotating the rotating rod 52 causes the threaded rod 41 to rotate, which in turn moves the mounting block 232. Markings can be set on the rotating rods 52 to ensure that each rotating rod 52 rotates the same number of times. The distance the mounting block 232 moves can be observed. Alternatively, markings can be omitted, as this ensures that the mounting block 232 moves from one end to the other end, so that the other end is in contact with the wall of the first mounting groove 22. Setting two sets of distances ensures that the positions of each mounting block 232 are the same. It also allows the adjacent holes of the mounting blocks 232 to be different, thus practicing a wavy drilling method.

[0070] Reference Figure 5 According to some embodiments of the present invention, optionally, the rotating rod 52 includes a hollow rod 521, the hollow rod 521 is connected to the second bearing 53, the hollow rod 521 is provided with a mounting ring 522, a second spring 523 is mounted on the mounting ring 522, the second spring 523 is clamped by a protrusion on a rotating rod 524 mounted in the hollow rod 521, and a connecting member 7 is installed between the rotating rod 524 and the threaded rod 41.

[0071] In actual use, to ensure that the rotating rod 52 does not rotate and cause the threaded rod 41 to rotate, thus preventing the mounting block 232 from moving, the rotating rod 52 can be connected to a hollow rod 521. Inside the hollow rod 521, a rotating rod 524 can be installed. The rotating rod 524 can be adjusted by pressing a spring to connect the connector 7 and the threaded rod 41, allowing the screw rod to rotate. This ensures that the rotating rod 52 will not cause the threaded rod 41 to move during operation.

[0072] Reference Figure 7 According to some embodiments of the present invention, optionally, the connector 7 includes a second connecting block 71 and a third connecting block 72, the second connecting block 71 is mounted on one end of the threaded rod 41, the third connecting block 72 is mounted on one end of the rotating rod 524, and the third connecting block 72 is provided with a groove 73 that matches the second connecting block 71.

[0073] Connector 7 can be made of two connecting blocks, which can be connected by insertion. When the rotating rod 524 is pressed, the second connecting block 71 can be inserted into the groove 73 of the third connecting block 72 for connection. When inserting, it is also necessary to rotate to align the insertion, and then rotate to adjust. This can also ensure that rotation does not occur during operation.

[0074] Reference Figure 2 and Figure 3According to some embodiments of the present invention, optionally, disassembly members 6 are installed at both ends of the first mounting groove 22. The disassembly members 6 include mounting members 61. The opposite end faces of the mounting members 61 at both ends are respectively provided with a second connecting groove 62 and a third connecting groove 63. The second connecting groove 62 is located on the inner side of the groove wall of the first mounting groove 22 near the mounting member 61. The third connecting groove 63 is located on the outer side of the groove wall of the first mounting groove 22 near the mounting member 61. The bottom of the third connecting groove 63 is provided with an opening 64. The opposite ends of the mounting bracket 23 are respectively provided with a first connecting block 65 that matches the second connecting groove 62 and the third connecting groove 63. The first connecting block 65 that matches the third connecting groove 63 is used to install the mounting bracket 23 in the first mounting groove 22 by a first screw 66.

[0075] During use, if it is necessary to replace the entire mounting bracket 23, it can be disassembled. Specifically, the disassembly method is to first remove the first screw 66 from the corresponding mounting part 61, then slide the first connecting block 65 out of the opening 64 in the third connecting groove 63, and then pull out the first connecting block 65 in the second connecting groove 62 to complete the disassembly of the entire mounting bracket 23 from the first mounting groove 22. At the same time, because the threaded rod 41 has a connecting part 7, the threaded rod 41 and the rotating component 5 can be easily separated and disassembled for subsequent installation. During the installation process, first insert one end of the mounting bracket 23 into the second connecting groove 62, then slide it upward through the opening 64 of the third connecting groove 63, and then fix it with the first screw 66 to complete the installation.

[0076] Reference Figure 2 According to some embodiments of the present invention, optionally, a cover plate 8 is installed at the outer end of the perforated roller 21. This facilitates opening the cover plate 8 and reaching inside to adjust the push frame 32. In order to protect the internal parts, and at the same time, the cover plate 8 should not press on the rotating rod 524, so as to avoid the need to remove the cover plate 8 when the position of the mounting block 232 needs to be adjusted separately.

[0077] Reference Figure 8 The present invention also provides a manufacturing process for a composite current collector, comprising:

[0078] S1: Determine the substrate type based on the application scenario, and then perform cleaning and impurity removal;

[0079] S2: Then the substrate processed in step S1 is placed on the unwinding device 1, and then wound along the guide rollers onto the perforating device 2, and then wound onto the winding device to form a material feeding route.

[0080] S3: Then start the perforation device 2 to perforate the composite current collector, and at the same time use the heating device 9 to heat and perforate according to the material.

[0081] S4: Adjust the perforation component 234 according to the application scenario, perform the corresponding perforation as required, and then clean it;

[0082] S5: Place the perforated and cleaned substrate in a vacuum drying oven, cut it into rolls of fixed size according to production requirements, and deburr the edges.

[0083] S6: Sputter a layer onto the surface of the polymer substrate, while this step can be omitted for metal foil substrates;

[0084] S7: Then, prepare the materials for the functional layer. They must be compatible with the perforated substrate to avoid the plating solution from seeping into the holes and causing blockage. Finally, complete the perforation process.

[0085] It should be understood that the embodiments disclosed herein are not limited to the specific processing steps or materials disclosed herein, but should be extended to equivalent substitutions of such features as understood by those skilled in the art. It should also be understood that the terminology used herein is for the purpose of describing particular embodiments only and is not intended to be limiting.

[0086] The term "embodiment" in this specification refers to a specific feature or characteristic described in connection with an embodiment that is included in at least one embodiment of the invention. Therefore, phrases or "embodiments" appearing in various places throughout the specification do not necessarily refer to the same embodiment.

[0087] Furthermore, the described features or characteristics can be incorporated into one or more embodiments in any other suitable manner. In the above description, specific details, such as thickness, quantity, etc., are provided to provide a comprehensive understanding of embodiments of the invention. However, those skilled in the art will understand that the invention can be implemented without the aforementioned specific details or may be implemented using other methods, components, materials, etc.

Claims

1. A device for manufacturing a composite current collector, characterized in that, include: The unwinding device (1) has multiple guide rollers along its path for feeding material. At the end of the device, a winding device pulls and winds the material. A perforating device (2) is provided during the feeding process. The perforating device (2) includes a perforating roller (21). The perforating roller (21) has multiple first mounting grooves (22). A mounting frame (23) is installed in the first mounting groove (22). A second mounting groove (231) is provided on the mounting frame (23). Multiple mounting blocks (240) are installed along the path in the second mounting groove (231). 32), the mounting block (232) is provided with a first connecting groove (233), the first connecting groove (233) is provided with a perforating component (234), the first mounting groove (22) is provided with sliding grooves (24) on both sides, the sliding grooves (24) are provided with up-down adjusting components (3), the unwinding device (1) is provided with a heating device (9) on one side, the up-down adjusting component (3) includes an adjusting plate (31), the adjusting plate (31) is installed in the corresponding sliding groove (24), the up The lower adjusting plate (31) is connected to the push frame (32), which is installed in the bottom of the mounting frame (23) and communicates with the sliding groove (24). The mounting frame (23) has threaded holes (34) at the front, middle and rear positions of the bottom. The push frame (32) and the threaded holes (34) are installed with adjusting rods (33) at opposite positions. A movable plate (25) is installed in the first connecting groove (233), and the movable plate (25) and the first connecting groove (233) are connected by a first spring (26). The perforated assembly (234) is connected to the sliding groove (24) and the first connecting groove (233). The perforated assembly (234) includes a base (235). The base (235) is provided with a slot that matches the sliding groove (24) and the first connecting groove (233) for installation. The bottom of the base (235) is fixed on the movable plate (25). The top of the base (235) is equipped with a placement groove (236). A perforated plate (237) is installed in the placement groove (236). The perforated plate (237) is fixed in the placement groove (236) by a second screw (238).

2. The equipment for manufacturing composite current collectors according to claim 1, characterized in that: The mounting bracket (23) is equipped with a front-to-back adjustment assembly (4), which includes a threaded rod (41). The threaded rod (41) is installed in the mounting bracket (23). The bottom of the first mounting groove (22) is provided with a connecting groove (42). The mounting block (232) is threadedly connected to the threaded rod (41) through the connecting groove (42). One end of the threaded rod (41) is connected to the rotating assembly (5). The mounting bracket (23) is equipped with a first bearing (43) at both ends of the threaded rod (41). The first bearing (43) is connected to both ends of the threaded rod (41).

3. The equipment for manufacturing composite current collectors according to claim 2, characterized in that: The rotating assembly (5) includes a rotating part (51) mounted on the outer end of the perforated roller (21) corresponding to the first mounting groove. The rotating part (51) is mounted on a rotating rod (52). The rotating rod (52) is mounted on a second bearing (53) mounted on the perforated roller (21). The rotating rod (52) is connected to the threaded rod (41).

4. The equipment for manufacturing composite current collectors according to claim 3, characterized in that: The rotating rod (52) includes a hollow rod (521), which is connected to the second bearing (53). The hollow rod (521) is provided with a mounting ring (522), and a second spring (523) is installed on the mounting ring (522). The second spring (523) is clamped by a protrusion on a rotating rod (524) installed in the hollow rod (521). A connector (7) is installed between the rotating rod (524) and the threaded rod (41).

5. The equipment for manufacturing composite current collectors according to claim 4, characterized in that: The connector (7) includes a second connecting block (71) and a third connecting block (72). The second connecting block (71) is installed on one end of the threaded rod (41), and the third connecting block (72) is installed on one end of the rotating rod (524). The third connecting block (72) has a groove (73) that matches the second connecting block (71).

6. The equipment for manufacturing composite current collectors according to claim 5, characterized in that: The first mounting slot (22) is equipped with disassembly parts (6) at both ends. The disassembly parts (6) include mounting parts (61). The mounting parts (61) at both ends are respectively provided with a second connecting slot (62) and a third connecting slot (63) on their opposite end faces. The second connecting slot (62) is located on the mounting part (61) near the inner side of the first mounting slot (22). The third connecting slot (63) is located on the mounting part (61) near the outer side of the first mounting slot (22). The bottom of the third connecting slot (63) is provided with an opening (64). The mounting bracket (23) is provided with a first connecting block (65) at each opposite end that matches the second connecting slot (62) and the third connecting slot (63). The first connecting block (65) that matches the third connecting slot (63) is used to install the mounting bracket (23) in the first mounting slot (22) by a first screw (66).

7. The equipment for manufacturing composite current collectors according to claim 1, characterized in that: The perforated roller (21) is fitted with a cover plate (8) at its outer end.

8. A manufacturing process for a composite current collector, applied to the manufacturing equipment for the composite current collector according to any one of claims 1-7, characterized in that: S1: Determine the substrate type based on the application scenario, and then perform cleaning and impurity removal; S2: Then the substrate processed in step S1 is placed on the unwinding device (1), and then wound along the guide roller onto the perforating device (2), and then wound onto the winding device to form a material feeding route; S3: Then start the perforation device (2) to perforate the composite current collector, and at the same time use the heating device (9) to heat and perforate according to the material; S4: Adjust the perforation assembly (234) according to the application scenario, then perform the corresponding perforation as required, and then clean it; S5: Place the perforated and cleaned substrate in a vacuum drying oven, cut it into rolls of fixed size according to production requirements, and deburr the edges. S6: Sputter a layer onto the surface of the polymer substrate, while this step can be omitted for metal foil substrates; S7: Then, prepare the materials for the functional layer. They must be compatible with the perforated substrate to avoid the plating solution from seeping into the holes and causing blockage. Finally, complete the perforation process.

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