Laser cleaning dust removal device
By adopting a combined structure of a vacuum suction plate and a negative pressure chamber in the laser cleaning and dust removal device, the problem that existing devices are difficult to adapt to electrode sheets of different thicknesses is solved, and high-precision laser cleaning and dust removal is achieved, reducing production costs.
Patent Information
- Application Number
- CN202421367246.8
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-06-14
- Publication Date
- 2025-04-25
- Estimated Expiration
- 2034-06-14
AI Technical Summary
The existing laser cleaning and dust removal devices are difficult to adapt to electrode sheets of different thicknesses, which may lead to insufficient adsorption, fracture of electrode sheets, poor cleaning accuracy and cleaning table damage, increasing production costs.
A laser cleaning and dust removal device is designed, adopting a combined structure of a vacuum suction plate and a negative pressure cavity. The vacuum suction plate has a gradually enlarged adsorption hole. The negative pressure cavity is equipped with independent vacuum suction channels and water-cooled channels, which can effectively adsorb and clean electrode sheets of different thicknesses and prevent damage to the cleaning table.
The device can adsorb electrode sheets of different thicknesses with appropriate adsorption force, improve the accuracy of laser cleaning, prevent electrode sheets from breaking and cleaning table damage, and reduce production costs.
Smart Images
Figure CN222790051U_ABST
Abstract
Description
Technical Field
[0001] The present invention relates to a laser cleaning and dust removal device for laser cleaning and dust removal of an electrode sheet. 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.
[0003] At present, the laser cleaning and dust removal devices commonly used in the industry can only effectively adsorb electrode sheets within a pre-set smaller thickness range, and it is difficult to adapt to different types of electrode sheets within a larger thickness range. For example, when the thickness of the electrode sheet is large, the laser cleaning and dust removal device may not adsorb enough, causing the electrode sheet to move and break or poor cleaning accuracy. In addition, after laser cleaning, a lot of dust and other foreign matter will accumulate on the edge of the electrode sheet on the cleaning table, resulting in contamination of the electrode sheet. In addition, in order to set up a welding groove area, etc., a laser cleaning area is usually set at the edge of the electrode sheet, so that when the laser is irradiated to the laser cleaning area, the laser is easily irradiated to the cleaning table adjacent to the edge of the electrode sheet, causing damage to the cleaning table. Therefore, it is necessary to frequently replace the cleaning table to ensure the quality of laser cleaning, resulting in an increase in production costs. Utility Model Content
[0004] The present disclosure is completed in view of the above-mentioned existing problems, and its purpose is to provide a laser cleaning and dust removal device that can at least adsorb electrode sheets of different thicknesses with an appropriate adsorption force.
[0005] A laser cleaning and dust removal device in one embodiment of the present invention is used to perform laser cleaning and dust removal on an electrode sheet, and is characterized in that it comprises: a vacuum suction plate, which includes a first surface, a second surface, and a suction hole that passes through the first surface and the second surface; and a negative pressure cavity, which is fixedly connected to the second surface side of the vacuum suction plate and has a negative pressure channel connected to the suction hole, the suction hole has a first opening on the first surface side of the vacuum suction plate, and has a second opening on the second surface side of the vacuum suction plate, and the area of the second opening is larger than the area of the first opening.
[0006] In the laser cleaning and dust removal device of one embodiment of the present disclosure, the cross-sectional area of the adsorption hole gradually increases from the first surface toward the second surface of the vacuum suction plate.
[0007] In a laser cleaning and dust removal device according to one embodiment of the present disclosure, the equivalent diameter of the first opening is 1 mm or less, and the equivalent diameter of the second opening is 4 mm or less.
[0008] In a laser cleaning and dust removal device according to one embodiment of the present disclosure, the equivalent diameter of the first opening is 0.5 mm to 1 mm, and the equivalent diameter of the second opening is 2 mm to 4 mm.
[0009] In a laser cleaning and dust removal device according to one embodiment of the present disclosure, the equivalent diameter of the second opening is 4-8 times the equivalent diameter of the first opening.
[0010] In a laser cleaning and dust removal device of one embodiment of the present invention, the vacuum suction plate has an avoidance groove. When the electrode sheet is laser cleaned, the vacuum suction plate fixes the electrode sheet by adsorbing the electrode sheet through the first opening, and the edge of the electrode sheet covers a portion of the avoidance groove.
[0011] In a laser cleaning and dust removal device of one embodiment of the present invention, the negative pressure chamber has a roughly rectangular shape, and a dust suction groove is provided on one side fixedly connected to the vacuum suction plate. The dust suction groove overlaps with the avoidance groove to form a part of the dust suction channel of the negative pressure chamber.
[0012] In a laser cleaning and dust removal device of one embodiment of the present invention, the negative pressure cavity is formed with a dust exhaust outlet on one end face close to the dust suction groove, and the dust exhaust outlet also constitutes a part of the dust suction channel, and is connected to the vacuum filter and vacuum source outside the negative pressure cavity in sequence through a pipeline.
[0013] In a laser cleaning and dust removal device of one embodiment of the present invention, a water cooling channel and a temperature measurement channel are also provided in the negative pressure chamber, and the negative pressure channel, the dust suction channel, the water cooling channel and the temperature measurement channel are independently provided.
[0014] In a laser cleaning and dust removal device of one embodiment of the present invention, the water inlet and the water outlet of the water cooling channel are both located on the other end surface of the negative pressure cavity, and the other end surface is opposite to the one end surface where the dust exhaust outlet is formed.
[0015] Utility Model Effect
[0016] The laser cleaning and dust removal device disclosed in the present invention is at least capable of adsorbing electrode sheets of different thicknesses with an appropriate adsorption force, which helps to improve the laser cleaning accuracy of the electrode sheets. BRIEF DESCRIPTION OF THE DRAWINGS
[0017] Figure 1 It is a stereoscopic diagram of the laser cleaning and dust removal device disclosed in the present invention.
[0018] Figure 2 3 are diagrams showing the vacuum suction plate in the laser cleaning and dust removal device of the present invention, wherein (A) is a top view of the vacuum suction plate, (B) is a bottom view of the vacuum suction plate, and (C) is a side sectional view obtained by cutting the vacuum suction plate along the AA line in (A).
[0019] Figure 3 It is a top perspective view showing the positional relationship between the electrode sheet and the vacuum suction plate during laser cleaning.
[0020] Figure 4 2 are diagrams showing a negative pressure cavity in the laser cleaning and dust removal device of the present invention, wherein (A) is a three-dimensional diagram of the negative pressure cavity, and (B) is a top perspective diagram of the negative pressure cavity.
[0021] Description of Reference Numerals
[0022] 1Laser cleaning and dust removal device
[0023] S electrode sheet
[0024] 10 Vacuum suction plate
[0025] 11 Side 1
[0026] 12 Side 2
[0027] 13 adsorption holes
[0028] 131 First Opening
[0029] 132 Second Opening
[0030] 14 Avoidance notch
[0031] 20 Negative pressure chamber
[0032] 24 vacuum notches
[0033] 25 Dust Exhaust Outlet
[0034] 30 Negative pressure channel
[0035] 40 dust collection channels
[0036] 50 water cooling channels
[0037] 60 temperature measurement channels. DETAILED DESCRIPTION
[0038] Hereinafter, the structures and functions of the various parts of the present disclosure 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 disclosure. In addition, 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 set forth to provide a comprehensive understanding of the embodiments of the present disclosure. 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 disclosure.
[0039] The terms used herein are only for describing specific embodiments and are not intended to limit the present disclosure. The terms "having", "including", etc. 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.
[0040] The laser cleaning and dust removal device 1 disclosed in the present invention is used for laser cleaning and dust removal of electrode sheets.
[0041] Figure 1 is a three-dimensional diagram of the laser cleaning and dust removal device 1 disclosed in the present invention. Figure 1 As shown, the laser cleaning and dust removal device 1 includes a vacuum suction plate 10, a negative pressure cavity 20, a fixing seat 100, a fixing seat adjustment block 110, a vacuum filter 41, a vacuum pressure gauge 42 and a thermocouple 61. The negative pressure cavity 20, the vacuum filter 41 and the vacuum pressure gauge 42 are all fixed on the fixing seat 100, and the vacuum suction plate 10 is fixed on the negative pressure cavity 20. The fixing seat 100 and the fixing seat adjustment block 110 are fixed on an equipment base not shown in the figure, and the fixing seat adjustment block 110 is located on one side of the fixing seat 100, and is used to adjust the fixing seat 100 left and right.
[0042] Figure 2 3 is a diagram showing a vacuum suction plate 10 in a laser cleaning and dust removal device 1, wherein (A) is a top view of the vacuum suction plate 10, (B) is a bottom view of the vacuum suction plate 10, and (C) is a side sectional view obtained by cutting the vacuum suction plate 10 along line AA in (A).
[0043] like Figure 2 As shown, the vacuum suction plate 10 includes a first surface 11, a second surface 12, and a suction hole 13 that penetrates the first surface 11 and the second surface 12. The suction hole 13 has a first opening 131 on the first surface 11 side of the vacuum suction plate 10, and has a second opening 132 on the second surface 12 side of the vacuum suction plate 10, and the area of the second opening 132 is greater than the area of the first opening 131.
[0044] By setting the area of the first opening 131 that contacts the electrode sheet during vacuum cleaning to be smaller, it is possible to prevent adsorption hole marks from being left on the electrode sheet due to an excessively large opening diameter; by setting the area of the second opening 132 that is connected to the negative pressure channel during vacuum cleaning to be larger, it is possible to prevent adsorption weakness caused by insufficient negative pressure introduction.
[0045] In this embodiment, the cross-sectional area of the adsorption hole 13 gradually increases from the first surface 11 to the second surface 12 of the vacuum suction plate 10. Figure 2 As shown in (C), the adsorption hole 13 can be formed into a cone. By gradually changing the cross-sectional area of the adsorption hole 13, the negative pressure introduced from the negative pressure channel to the first opening 131 can be more stably enhanced, so that the first opening 131 has sufficient adsorption force. In addition, the adsorption holes 13 are formed into multiple columns, and the adsorption holes 13 in each column are arranged at equal intervals. The shapes of the first opening 131 and the second opening 132 are not particularly limited, and can be formed into a circle or other shapes such as a square.
[0046] In one embodiment, the equivalent diameter of the first opening 131 is less than 1 mm, and the equivalent diameter of the second opening 132 is less than 4 mm.
[0047] More preferably, the equivalent diameter of the first opening 131 is 0.5 mm-1 mm, and the equivalent diameter of the second opening is 2 mm-4 mm.
[0048] By setting the first opening and the second opening to the appropriate range as described above, electrode sheets of different thicknesses can be adsorbed with appropriate adsorption force. That is, when adsorbing a thinner electrode sheet, it is prevented that the adsorption force is too strong to cause the electrode sheet to break, and when adsorbing a thicker electrode sheet, it is prevented that the negative pressure introduction is insufficient to cause adsorption weakness. In addition, since the equivalent diameter of the first opening 131 is set to be smaller, it is possible to prevent adsorption hole marks from being left on the electrode sheet due to an excessively large opening diameter; and since the equivalent diameter of the second opening 132 is set to be larger, it is possible to prevent adsorption weakness caused by insufficient negative pressure introduction.
[0049] In one embodiment, the equivalent diameter of the second opening 132 is 4-8 times the equivalent diameter of the first opening 131 .
[0050] By making the equivalent diameter of the second opening 132 and the equivalent diameter of the first opening 131 satisfy the above relationship, it is possible to obtain a suitable adsorption force more easily.
[0051] Figure 3 1 is a perspective view from above showing the positional relationship between the electrode sheet S and the vacuum suction plate 10 during laser cleaning.
[0052] like Figure 3As shown, the vacuum suction plate 10 has an avoidance notch 14 . When the electrode sheet S is laser cleaned, the vacuum suction plate 10 fixes the electrode sheet S by adsorbing the electrode sheet S through the first opening 131 , and the edge of the electrode sheet S covers a portion of the avoidance notch 14 .
[0053] In this embodiment, foreign matter such as dust generated after laser cleaning will fall from the edge of the electrode sheet S on the vacuum suction plate 10 to the avoidance slot 14, so that foreign matter will not accumulate on the edge of the electrode sheet S, thereby preventing contamination of the electrode sheet.
[0054] In addition, in some application scenarios, due to the need to set a welding groove area, at least a portion of the area of the electrode sheet S covering the avoidance notch 14 is irradiated with laser (i.e., becomes a laser cleaning area). Since the vacuum suction plate 10 has the avoidance notch 14, and the edge of the electrode sheet S covers a portion of the avoidance notch 14, even if a portion of the laser is irradiated to the outside of the electrode sheet S, it enters the avoidance notch 14 and does not directly irradiate the surface of the vacuum suction plate 10. Thus, it is possible to prevent damage to the vacuum suction plate 10 caused by laser irradiation, extend the service life of the vacuum suction plate, and significantly reduce production costs.
[0055] The covering width W of the edge of the electrode sheet S on the avoidance slot 14 is not particularly limited, as long as it can prevent the accumulation of foreign matter and prevent the vacuum suction plate from being damaged. The covering width W of the edge of the electrode sheet S on the avoidance slot 14 can be 0.4mm-0.6mm. As an example, the covering width W of the edge of the electrode sheet S on the avoidance slot 14 is 0.5mm.
[0056] Figure 4 3 and 4 are diagrams showing the negative pressure chamber 20 in the laser cleaning and dust removal device 1 , wherein (A) is a stereoscopic diagram of the negative pressure chamber 20 , and (B) is a top perspective diagram of the negative pressure chamber 20 .
[0057] like Figure 4 As shown, the negative pressure chamber 20 is roughly rectangular in shape, and a dust suction slot 24 is provided on one side fixedly connected to the vacuum suction plate 10 . The dust suction slot 24 overlaps with the avoidance slot 14 to form a part of the dust suction channel 40 of the negative pressure chamber 20 .
[0058] Through this structure, foreign matter that falls into the avoidance slot 14 can smoothly enter the dust suction slot 24 to facilitate subsequent discharge of the foreign matter.
[0059] In addition, the negative pressure chamber 20 has a dust outlet 25 formed on one end surface 20a near the dust suction slot 24. The dust outlet 25 also constitutes a part of the dust suction channel 40 and is connected to the vacuum filter and vacuum source outside the negative pressure chamber 20 in sequence through a pipeline.
[0060] Therefore, foreign matters such as dust generated after laser cleaning will fall from the edge of the electrode sheet S on the vacuum suction plate 10 to the avoidance slot 14, further enter the dust suction slot 24 and be discharged to the vacuum filter outside the negative pressure chamber 20 through the dust discharge outlet 25. Due to the suction effect of the vacuum source, foreign matters will not accumulate on the edge of the electrode sheet S, which can prevent contamination of the electrode sheet.
[0061] In addition, a suction groove 23 is also provided on one side of the negative pressure chamber 20 that is fixedly connected to the vacuum suction plate 10. The suction groove 23 is formed into a shape corresponding to the column of suction holes 13 of the vacuum suction plate 10, and each part is connected to each other to form a part of the negative pressure channel 30. The width of the suction groove 23 is greater than the equivalent diameter of the second opening 132 of the vacuum suction plate 10. By forming the suction groove 23 in this way, negative pressure can be efficiently introduced from the negative pressure channel 30 to the first opening 131.
[0062] In addition, the negative pressure chamber 20 is provided with an adsorption port 22 on the side 20 b which is connected to the adsorption groove 23 . The adsorption port 22 also constitutes a part of the negative pressure channel 30 , and is connected to the vacuum filter and the vacuum source outside the negative pressure chamber 20 in sequence through a pipeline.
[0063] In one embodiment, if Figure 4 As shown in detail in (B), in addition to the aforementioned negative pressure channel 30 and dust suction channel 40, a water cooling channel 50 and a temperature measurement channel 60 are also provided in the negative pressure chamber 20, and the negative pressure channel 30, the dust suction channel 40, the water cooling channel 50 and the temperature measurement channel 60 are independently provided. Thus, one negative pressure chamber 20 concentrates multiple functions and greatly saves installation space.
[0064] In one embodiment, if Figure 4 As shown, the water inlet 51 and the water outlet 52 of the water cooling channel 50 are both located at the other end surface 20c of the negative pressure chamber 20, and the other end surface 20c is opposite to the end surface 20a where the dust exhaust outlet 25 is formed. In this way, the layout of the openings formed on the negative pressure chamber 20 can be made more reasonable, and the overall structure of the laser cleaning and dust removal device can be made more reasonable. It should be noted that the relative positions of the water inlet 51 and the water outlet 52 are not limited to Figure 4 The cases shown can also be interchanged.
[0065] In one embodiment, the water cooling pipeline 75 is made of a stainless steel hollow tube, one side of which is fully welded to the water inlet 51 and the water outlet 52 on the other end surface 20c of the negative pressure chamber 20, and the other side extends to the rear of the equipment base not shown in the figure and is connected to the water cooler, thereby preventing water leakage during the cooling of the negative pressure chamber 20 from causing short circuit of the electrical components of the equipment and contamination of the electrode sheets.
[0066] In addition, two temperature measuring channels 60 can be provided inside the negative pressure chamber 20, which are usually used to install thermocouples 61 (see Figure 1 ), the conductor part of the thermocouple 61 is inserted into the temperature measuring channel 60 to detect the internal temperature of the negative pressure cavity 20 at all times.
[0067] The above description shows preferred embodiments of the present disclosure, but the present disclosure is not limited to the above embodiments, and various changes can be implemented within the scope of the present disclosure. In particular, without departing from the spirit and teachings of the present disclosure, the features described in the various embodiments and / or technical solutions of the present disclosure can be combined and / or combined in various ways. All these combinations and / or combinations fall within the scope of the present disclosure.
[0068] Industrial Applicability
[0069] The laser cleaning and dust removal device disclosed in the present invention is at least capable of adsorbing electrode sheets of different thicknesses with an appropriate adsorption force, which helps to improve the laser cleaning accuracy of the electrode sheets.
Claims
1. A laser cleaning and dust removal device, which is used to laser clean and remove dust from an electrode sheet, characterized in that: have: A vacuum suction plate, comprising a first surface, a second surface, and suction holes penetrating the first surface and the second surface; and a negative pressure chamber, which is fixedly connected to the second surface of the vacuum suction plate and has a negative pressure channel connected to the suction hole, The adsorption hole has a first opening on the first surface side of the vacuum suction plate, and has a second opening on the second surface side of the vacuum suction plate, and an area of the second opening is greater than an area of the first opening.
2. The laser cleaning and dust removal device according to claim 1, characterized in that: The cross-sectional area of the adsorption hole gradually increases from the first surface toward the second surface of the vacuum suction plate.
3. The laser cleaning and dust removal device according to claim 2, characterized in that: The equivalent diameter of the first opening is less than 1 mm, The equivalent diameter of the second opening is 4 mm or less.
4. The laser cleaning and dust removal device according to claim 3, characterized in that: The equivalent diameter of the first opening is 0.5 mm-1 mm, The equivalent diameter of the second opening is 2 mm-4 mm.
5. The laser cleaning and dust removal device according to claim 2, characterized in that: The equivalent diameter of the second opening is 4-8 times the equivalent diameter of the first opening.
6. The laser cleaning and dust removal device according to any one of claims 1 to 5, characterized in that: The vacuum suction plate has an avoidance notch, When the electrode sheet is laser cleaned, the vacuum suction plate fixes the electrode sheet by adsorbing the electrode sheet through the first opening, and the edge of the electrode sheet covers a portion of the avoidance notch.
7. The laser cleaning and dust removal device according to claim 6, characterized in that: The negative pressure chamber is roughly rectangular in shape, and a dust suction notch is provided on one side fixedly connected to the vacuum suction plate. The dust suction slot overlaps with the avoidance slot to form a part of the dust suction channel of the negative pressure cavity.
8. The laser cleaning and dust removal device according to claim 7, characterized in that: The negative pressure cavity is formed with a dust outlet at one end face close to the dust suction slot, and the dust outlet also constitutes a part of the dust suction channel and is successively connected to the vacuum filter and the vacuum source outside the negative pressure cavity through a pipeline.
9. The laser cleaning and dust removal device according to claim 8, characterized in that: The negative pressure chamber is also provided with a water cooling channel and a temperature measuring channel. The negative pressure channel, the dust suction channel, the water cooling channel and the temperature measurement channel are arranged independently of each other.
10. The laser cleaning and dust removal device according to claim 9, characterized in that: The water inlet and the water outlet of the water cooling channel are both located on the other end surface of the negative pressure cavity, and the other end surface is opposite to the one end surface where the dust exhaust outlet is formed.