Wiping device and laser cleaning system
In the electrode sheet wipe device after laser cleaning, a press plate made of a whole piece of board is used to define the contact position of the wipe head through the notch, which solves the problem of inaccurate positioning and high cost caused by the easy deformation of the micro-lap sheet, and achieves the effect of simple structure, convenient use and effective prevention of electrode sheet contamination and breakage.
Patent Information
- Application Number
- CN202421366191.9
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-06-14
- Publication Date
- 2025-05-09
- Estimated Expiration
- 2034-06-14
AI Technical Summary
During the existing wiper device wiping the electrode sheet after cleaning, the merlots are prone to deform, resulting in inaccurate positioning, contamination caused by infiltration of the cleaning liquid, and inadequate fit may lead to fracture of the electrode sheet. At the same time, the merlots need to be frequently replaced as consumables, which increases the cost.
A simple structure wiper device is designed, and a press plate made of a whole piece of board is used to define the contact position of the wiper head by opening slots on the press plate, thereby avoiding the use of the mict piece.
The device does not require the use of easily deformed mercapto pieces. It has a simple structure and is easy to use, which avoids the increase in cost caused by replacing mercapto pieces, and effectively prevents contamination and breakage of the electrode sheet.
Smart Images
Figure CN222842635U_ABST
Abstract
Description
Technical Field
[0001] The utility model relates to the field of laser cleaning, in particular to a wiping device for wiping an electrode sheet after laser cleaning and a laser cleaning system with the wiping device. Background Art
[0002] With the development of lithium battery manufacturing technology, laser cleaning technology has been widely used. For example, in the process of making lithium batteries, laser cleaning technology is often used to quickly burn off the surface active materials in the specified area of the electrode sheet after coating or cold pressing, exposing the metal conductive current collector in the middle to form a welding groove area for subsequent welding processes. However, foreign matter such as dust will remain in the welding groove area of the electrode sheet after laser cleaning, and a wiping device is needed to wipe off the foreign matter.
[0003] At present, the wiping device commonly used in the industry has a wiping head and a pressing plate for pressing the electrode sheet when wiping foreign matter. A large through groove is provided on the back of the pressing plate, and a Mylar sheet is embedded in the through groove. A positioning groove is further provided on the Mylar sheet to limit the wiping position of the wiping head on the electrode sheet. The Mylar sheet is a resin sheet that is easily deformed. Therefore, the edge of the positioning groove cannot completely fit with the electrode sheet, and the cleaning liquid on the wiping head will penetrate into the gap between the Mylar sheet and the electrode sheet, causing contamination of the electrode sheet. In addition, the Mylar sheet is not tightly fitted to the electrode sheet, which may cause the electrode sheet to move and break. In addition, as a consumable, the Mylar sheet needs to be replaced frequently to ensure wiping accuracy, which will lead to increased costs. Utility Model Content
[0004] The utility model is completed in view of the above existing problems, and its purpose is to provide a wiping device with a simple structure and no need to use Mylar sheets.
[0005] A wiping device in one embodiment of the utility model is used to wipe an electrode sheet after laser cleaning, and is characterized in that it comprises: a suction plate having adsorption holes formed on its surface, for adsorbing the back side of the electrode sheet to be wiped and fixing the electrode sheet; a pressing plate having a top surface, a bottom surface and a groove passing through the top surface and the bottom surface; and a wiping head, for wiping the surface side of the electrode sheet, the pressing plate being processed from a whole piece of plate, and when the wiping head wipes the surface side of the electrode sheet, the bottom surface of the pressing plate is in close contact with the surface side of the entire electrode sheet, and the wiping head contacts the electrode sheet via the groove along a wiping direction parallel to the electrode sheet.
[0006] In the wiping device according to one aspect of the present invention, the notch gradually decreases from the top surface toward the bottom surface of the pressing plate, and is formed in a long strip shape with the wiping direction as a longitudinal direction.
[0007] In the wiping device according to one embodiment of the present invention, the width of the wiping head is larger than the width of the notch on the bottom surface and smaller than the width of the notch on the top surface.
[0008] In the wiping device according to one aspect of the present invention, the pressing plate has a plate-like portion on the bottom surface side of the notch, and the thickness of the plate-like portion at the thinnest part is 0.08-0.12 mm.
[0009] In the wiping device according to one aspect of the present invention, an angle formed between the upper surface of the plate-like portion and the bottom surface on at least one side in the width direction of the slot is less than or equal to 5°.
[0010] In a wiping device of one embodiment of the present invention, the two sides of the slot are symmetrically arranged in the length direction, and the angle formed by the upper surface of the plate-like portion and the bottom surface in the length direction of the slot is in the range of 15° to 25°.
[0011] In the wiping device according to one aspect of the present invention, the Rockwell hardness HRC of the pressing plate is 90 or more.
[0012] In the wiping device according to one aspect of the present invention, the bottom surface of the pressing plate is coated with a resin coating.
[0013] A laser cleaning system according to one embodiment of the present invention includes a laser cleaning device and the above-mentioned wiping device.
[0014] In a laser cleaning system of one embodiment of the present invention, the laser cleaning device has a long strip-shaped cleaning groove for laser irradiation, the width of the groove on the bottom surface is equal to the width of the cleaning groove, and the length of the groove on the bottom surface is greater than the length of the laser cleaning groove.
[0015] Utility Model Effect
[0016] The wiping device of the utility model and the laser cleaning system equipped with the wiping device have simple structures and do not need to use consumables such as Mylar sheets that are easily deformed. BRIEF DESCRIPTION OF THE DRAWINGS
[0017] Figure 1 It is a side view of the wiping device of the utility model.
[0018] Figure 2 It is a top view of the pressing plate in the wiping device of the utility model.
[0019] Figure 3 Yes Figure 2 The pressure plate shown is a side cross-sectional view taken along line AA.
[0020] Figure 4 yes Figure 2 The cross-sectional views of the notch portion in the pressure plate shown, wherein (A) is a side cross-sectional view obtained by cutting the notch along line AA, and (B) is a side cross-sectional view obtained by cutting the notch along line BB.
[0021] Description of Reference Numerals
[0022] 1 Wiping device
[0023] S Electrode
[0024] 10 Suction plate
[0025] 20 Platen
[0026] 21 Top
[0027] 22 Bottom
[0028] 23 Notch
[0029] 231 plate-shaped part
[0030] 30 Wipe head. DETAILED DESCRIPTION
[0031] Hereinafter, the structures and functions of the various parts of the present invention will be described in detail with reference to the accompanying drawings. However, it should be understood that these descriptions are exemplary only and are not intended to limit the scope of the present invention. Furthermore, the accompanying drawings are for illustration purposes only and are not drawn to scale. In the following detailed description, for ease of explanation, many specific details are described to provide a comprehensive understanding of the embodiments of the present invention. However, it is obvious that one or more embodiments may also be implemented without these specific details. In addition, in the following description, descriptions of known structures and technologies are omitted to avoid unnecessary confusion of the concepts of the present invention.
[0032] The terms used herein are only for describing specific embodiments and are not intended to limit the present invention. The terms "having" and "having" used herein indicate the existence of the features, steps, operations and / or components, but do not exclude the existence or addition of one or more other features, steps, operations or components.
[0033] After laser cleaning, foreign matters such as dust may remain on the laser cleaned portion of the electrode sheet. The wiping device 1 of the utility model is used to wipe off the foreign matters.
[0034] Figure 1 1 is a side view of the wiping device 1 of the present invention. Figure 1As shown, the wiping device 1 is used to wipe the electrode sheet S after laser cleaning, and includes a suction plate 10, a pressing plate 20, and a wiping head 30. The suction plate 10 has adsorption holes (not shown) formed on the surface, which are used to adsorb the back side of the electrode sheet S to be wiped and fix the electrode sheet S. The wiping head 30 is used to wipe the surface side of the electrode sheet S, and is appropriately impregnated with a cleaning liquid that can improve the foreign matter erasing effect as needed.
[0035] Figure 2 1 is a top view of the pressing plate 20 in the wiping device 1 . Figure 3 Yes Figure 2 The side cross-sectional view of the pressing plate 20 shown is obtained by cutting along the AA line. Figure 2-Figure 3 As shown, the pressing plate 20 has a top surface 21, a bottom surface 22, and a notch 23 that runs through the top surface 21 and the bottom surface 22. In the wiping device 1 of the utility model, the pressing plate 20 is processed from a whole plate. The pressing plate 20 is not inlaid with a Mylar sheet, but a notch 23 is directly opened on the plate, and the notch 23 can limit the wiping position of the wiping head 30 on the electrode sheet S.
[0036] When the wiping head 30 wipes the surface of the electrode sheet S, the bottom surface 22 of the pressing plate 20 is in close contact with the entire surface of the electrode sheet S, and the wiping head 30 contacts the electrode sheet S in a wiping direction parallel to the electrode sheet S through the notch 23 .
[0037] The pressing plate 20 is made of a whole plate without using Mylar sheets, so it has a simple structure and is easy to use, and also avoids the cost increase caused by replacing Mylar sheets.
[0038] In addition, if Figure 2-Figure 3 As shown, the notch 23 gradually decreases from the top surface 21 of the pressing plate 20 toward the bottom surface 22, and is formed into a long strip shape with the wiping direction as the length direction. By forming the notch 23 into this shape, not only can the wiping position of the wiping head 30 on the electrode sheet S be limited, but also the resistance to the wiping head 30 in the wiping direction can be reduced.
[0039] In one embodiment, the width of the wiping head 30 is greater than the width W1 of the notch 23 on the bottom surface 22 and less than the width W2 of the notch 23 on the top surface 21 (see also Figure 4 ). If the width of the wiping head 30 is too large, the wiping head 30 may be lifted by the edge of the slot 23 and cannot reach the bottom of the slot, and the cleaning liquid impregnated in the wiping head may be wasted. If the width of the wiping head 30 is too small, insufficient wiping may occur. By setting the wiping head 30 to the appropriate width, it is possible to achieve both improved wiping effect and cost savings.
[0040] Figure 4 yes Figure 2The cross-sectional view of the notch 23 in the pressure plate 20 is shown, wherein (A) is a cross-sectional view of the notch 23 along the pressure plate 20. Figure 2 The side sectional view obtained by cutting along the AA line in FIG. 2, (B) is a side sectional view obtained by cutting along the AA line in FIG. Figure 2 The side sectional view obtained by cutting along the BB line.
[0041] like Figure 4 As shown, the pressing plate 20 has a thinner plate-like portion 231 on the bottom side of the notch 23, and the bottom surface of the plate-like portion 231 is a part of the bottom surface 22 of the pressing plate 20. When wiping, within the entire surface of the electrode sheet S, the bottom surface 22 of the pressing plate 20 formed into a plane can be in close contact with the surface of the electrode sheet S, thereby effectively preventing the electrode sheet S from being contaminated and broken.
[0042] In one embodiment, the thickness of the thinnest part of the plate-shaped portion 231 is 0.08-0.12 mm. Since the plate-shaped portion is formed thinner, it is possible to effectively prevent the cleaning liquid from the wiping head 30 from accumulating at the edge of the notch and contaminating the electrode sheet.
[0043] In one embodiment, the angle α formed between the upper surface 231U of the plate-like portion 231 on at least one side in the width direction of the notch 23 and the bottom surface 22 is less than or equal to 5°. Since the angle α is formed to be small, even if the wiping head 30 moves in a wiping direction parallel to the electrode sheet S during wiping, the notch 23 will not hinder the wiping head 30, and the wiping head 30 can smoothly contact the electrode sheet S. In addition, the cleaning liquid impregnated in the wiping head 30 will not seep excessively into the electrode sheet S due to the obstruction of the notch 23.
[0044] In one embodiment, the two sides of the notch 23 in the length direction are symmetrically arranged, and the angle β formed by the upper surface 231U of the plate-shaped portion 231 and the bottom surface 22 in the length direction of the notch 23 is in the range of 15° to 25°. By setting the angle β to an appropriate range, the notch 23 can effectively play a limiting role in the wiping direction, and at the same time, the cleaning liquid immersed in the wiping head 30 will not seep into the electrode sheet S too much.
[0045] In order to further ensure the flatness and rigidity of the pressing plate 20, the pressing plate 20 preferably has a Rockwell hardness HRC of 90 or more. As an example, stainless steel may be selected as the material of the pressing plate.
[0046] In addition, in order to better prevent the pressing plate 20 from damaging the electrode sheet S, a resin coating may be applied to the bottom surface of the pressing plate. As an example, the material of the resin coating may be Teflon.
[0047] Furthermore, to prevent sharp parts from scratching the wiping head, the boundary between the upper surface 231U of the plate-shaped portion 231 and the rising surface 231L and / or the boundary between the top surface 21 and the extended portion of the upper surface 231U of the plate-shaped portion 231 may be rounded.
[0048] The laser cleaning system of the utility model comprises a laser cleaning device and the above-mentioned wiping device. The laser cleaning device is used to quickly burn off the surface active material in the specified area of the electrode sheet, and the above-mentioned wiping device is used to wipe off the dust and other foreign matters remaining in the above-mentioned specified area.
[0049] In one embodiment, the laser cleaning device has a long strip cleaning tank for laser irradiation, and the above-mentioned specified area of the electrode sheet is exposed to the cleaning tank. The width of the notch 23 of the wiping device 1 on the bottom surface 22 is equal to the width of the cleaning tank, and the length of the notch 23 on the bottom surface is greater than the length of the laser cleaning tank. Therefore, the laser cleaning system of the utility model can accurately and fully clean the electrode sheet cleaned by the laser cleaning device.
[0050] The above is a description of the preferred embodiments of the present invention, but the present invention is not limited to the above embodiments, and various modifications can be implemented within the scope of the present invention. In particular, without departing from the spirit and teachings of the present invention, the features described in the various embodiments and / or technical solutions of the present invention can be combined and / or combined in various ways. All these combinations and / or combinations fall within the scope of the present invention.
[0051] Industrial Applicability
[0052] The wiping device of the utility model and the laser cleaning system equipped with the wiping device have simple structures and do not need to use consumables such as Mylar sheets that are easily deformed.
Claims
1. A wiping device, which is used to wipe an electrode sheet after laser cleaning, characterized in that: have: A suction plate having suction holes formed on its surface for sucking the back side of the electrode sheet to be wiped to fix the electrode sheet; A pressure plate having a top surface, a bottom surface, and a notch extending through the top surface and the bottom surface; as well as a wiping head for wiping the surface side of the electrode sheet, The pressing plate is made of a whole plate. When the wiping head wipes the surface of the electrode sheet, the bottom surface of the pressing plate is in close contact with the entire surface of the electrode sheet, and the wiping head contacts the electrode sheet through the notch in a wiping direction parallel to the electrode sheet.
2. The wiping device according to claim 1, characterized in that: The notch gradually decreases from the top surface toward the bottom surface of the pressing plate, and is formed in a long strip shape with the wiping direction as the length direction.
3. The wiping device according to claim 2, characterized in that: The width of the wiping head is greater than the width of the notch on the bottom surface and smaller than the width of the notch on the top surface.
4. The wiping device according to claim 2, characterized in that: The pressing plate has a plate-shaped portion on the bottom surface side of the notch, and the thickness of the plate-shaped portion at the thinnest part is 0.08-0.12 mm.
5. The wiping device according to claim 4, characterized in that: An angle formed between the upper surface of the plate-shaped portion and the bottom surface on at least one side in the width direction of the notch is less than or equal to 5°.
6. The wiping device according to claim 4, characterized in that: The two sides of the notch in the length direction are symmetrically arranged, and the angle formed by the upper surface of the plate-like portion and the bottom surface in the length direction of the notch is in the range of 15° to 25°.
7. The wiping device according to claim 1, characterized in that: The Rockwell hardness HRC of the pressing plate is greater than 90.
8. The wiping device according to any one of claims 1 to 7, characterized in that: The bottom surface of the press plate is coated with a resin coating.
9. A laser cleaning system, characterized in that: have: Laser cleaning devices; and The wiping device according to any one of claims 1 to 8.
10. The laser cleaning system according to claim 9, characterized in that: The laser cleaning device comprises a strip-shaped cleaning tank for laser irradiation. The width of the notch on the bottom surface is equal to the width of the cleaning tank, and the length of the notch on the bottom surface is greater than the length of the cleaning tank.