Laser shock crease method and device

Abstract

The present invention discloses a laser shock crease method, which includes the following steps: loading a material belt, conveying the loaded material belt, and performing laser shock crease treatment on the conveyed material belt; the present invention also discloses a laser shock crease device, which includes a loading mechanism for loading the material belt, a feeding mechanism for conveying the loaded material belt, and a laser shock mechanism for performing laser shock crease treatment on the passing material belt, the feeding mechanism is located on one side of the loading mechanism, and the laser shock mechanism is arranged on the conveying path of the material belt. The present application performs crease treatment on the conveyed material belt by laser shock, which is safe and efficient, and ensures the production efficiency of the entire battery cell.

Description

Technical Field

[0001] The present invention relates to the technical field of battery cell production, and in particular to a laser impact creasing method and device. Background Art

[0002] In the production process of the battery cell, the pole piece needs to be creased first, so as to facilitate the subsequent Z-shaped lamination to form the battery cell body. In the prior art, the crease treatment of the pole piece is generally carried out by puncturing or cutting the crease, and the above-mentioned puncturing method is easy to cause burrs on the pole piece, and the burrs are easy to puncture the diaphragm, causing a short circuit inside the battery cell, affecting the quality of the final battery cell. In addition, both the above-mentioned puncturing and cutting crease methods have the problem of slow crease processing speed, which affects the crease efficiency and thus affects the production efficiency of the entire battery cell. Summary of the invention

[0003] In view of the deficiencies in the prior art, the present invention provides a laser shock crease method and device.

[0004] The present invention discloses a laser shock crease method, comprising:

[0005] Feeding belt;

[0006] Convey the loaded material belt;

[0007] The conveyed material strip is subjected to laser shock crease processing.

[0008] According to one embodiment of the present invention, before the loaded material belt is conveyed, the method further includes:

[0009] Preset the fold position of the material strip.

[0010] According to one embodiment of the present invention, the material belt of the loading material is conveyed, including:

[0011] The material strip is conveyed in sections according to the preset folding positions of the material strip.

[0012] According to one embodiment of the present invention, the laser shock crease treatment is performed on the conveyed material strip, further comprising:

[0013] The laser shock crease treatment process is followed by the first cleaning of the strip.

[0014] According to one embodiment of the present invention, the first cleaning is vacuum cleaning.

[0015] According to one embodiment of the present invention, after the conveyed material strip is subjected to laser shock crease processing, the method further comprises:

[0016] The laser shock crease treatment is followed by a second cleaning of the strip.

[0017] According to an embodiment of the present invention, the second cleaning is dust brushing cleaning.

[0018] According to one embodiment of the present invention, before the conveyed material strip is subjected to laser shock crease processing, the method further comprises:

[0019] Carrying the material strip.

[0020] According to one embodiment of the present invention, before the conveyed material strip is subjected to laser shock crease processing, the method further comprises:

[0021] The loaded material strip is stretched.

[0022] The present invention discloses a laser shock crease device, comprising:

[0023] A feeding mechanism, which is used for feeding the material strip;

[0024] A feeding mechanism, which is located at one side of the loading mechanism; the feeding mechanism is used to convey the loaded material belt; and

[0025] The laser impact mechanism is arranged on the conveying path of the material belt; the laser impact mechanism performs laser impact crease processing on the passing material belt.

[0026] The present application uses laser impact to perform crease processing on the conveyed material belt, which is safe and efficient, and ensures the production efficiency of the entire battery cell. BRIEF DESCRIPTION OF THE DRAWINGS

[0027] The drawings described herein are used to provide a further understanding of the present application and constitute a part of the present application. The illustrative embodiments of the present application and their descriptions are used to explain the present application and do not constitute an improper limitation on the present application. In the drawings:

[0028] Figure 1 It is a schematic structural diagram of the laser shock crease device in Example 1;

[0029] Figure 2 It is a schematic structural diagram of the laser shock crease device in Embodiment 1 from another perspective;

[0030] Figure 3 It is a structural schematic diagram of the feeding mechanism in Example 1;

[0031] Figure 4 is a schematic structural diagram of the second dust removal mechanism in Example 1;

[0032] Figure 5 It is a structural schematic diagram of the dust removal drive assembly in Example 1;

[0033] Figure 6 It is a structural schematic diagram of the adjustment limiter and the adjustment part in the first embodiment;

[0034] Figure 7 This is a flow chart of the laser shock crease method in Example 2.

[0035] Description of reference numerals:

[0036] 1. Loading mechanism; 2. Feeding mechanism; 20. Feeding frame; 201. First mold frame; 202. Second mold frame; 21. Feeding drive assembly; 22. Feeding assembly; 221. First feeding member; 222. Second feeding member; 23. Feeding adjustment assembly; 231. Feeding adjustment frame; 232. Feeding adjustment driving member; 233. Feeding adjustment guide member; 24. Supporting assembly; 241. Supporting plate; 25. Limiting assembly; 251. Limiting block; 252. Limiting column; 3 , laser impact mechanism; 4, bearing mechanism; 41, bearing frame; 42, supporting assembly; 410, bearing frame body; 411, laser impact position; 412, laser impact plate; 5, material spreading mechanism; 51, material spreading assembly; 511, material spreading frame; 512, material spreading piece; 6, first dust removal mechanism; 61, dust suction unit; 7, second dust removal mechanism; 70, dust removal frame; 701, dust removal bearing bottom plate; 7011, dust leakage port; 702, dust removal bearing side plate; 703, first bearing end plate; 704, second dust removal end plate; 71, dust removal drive assembly; 711, dust removal drive member; 712, drive linkage member; 7121, main drive gear unit; 7122, linkage gear unit; 7123, first driven gear unit; 7124, second driven gear unit; 713, drive frame; 714, auxiliary adjustment member; 7141, auxiliary adjustment drive unit; 7142, auxiliary adjustment linkage unit; 71421, auxiliary inclined plane; 7143, auxiliary adjustment limiter; 7144, Auxiliary adjustment part; 71441, auxiliary adjustment plate; 71442, auxiliary roller; 72, dust removal assembly; 721, first dust removal member; 722, second dust removal member; 723, adjustment part; 7231, adjustment plate; 7232, adjustment wheel; 73, dust removal adjustment assembly; 731, adjustment drive member; 732, adjustment linkage member; 7321, adjustment slope; 733, adjustment limit member; 74, dust suction assembly; 741, dust removal member; 742, dust suction member; 100, material belt. DETAILED DESCRIPTION

[0037] The following will disclose multiple embodiments of the present invention with drawings. For the purpose of clear description, many practical details will be described together in the following description. However, it should be understood that these practical details should not be used to limit the present invention. That is, in some embodiments of the present invention, these practical details are not necessary. In addition, for the purpose of simplifying the drawings, some conventional structures and components will be depicted in a simple schematic manner in the drawings.

[0038] It should be noted that all directional indications such as up, down, left, right, front, back, etc. in the embodiments of the present invention are only used to explain the relative position relationship, movement status, etc. between the components in a certain specific posture as shown in the accompanying drawings. If the specific posture changes, the directional indication will also change accordingly.

[0039] In addition, in the present invention, the descriptions of "first", "second", etc. are only used for descriptive purposes, and do not specifically refer to the order or sequence, nor are they used to limit the present invention. They are only used to distinguish components or operations described with the same technical terms, and cannot be understood as indicating or implying their relative importance or implicitly indicating the number of technical features indicated. Therefore, the features defined as "first" and "second" may explicitly or implicitly include at least one of the features. In addition, the technical solutions between the various embodiments can be combined with each other, but they must be based on the ability of ordinary technicians in the field to implement them. When the combination of technical solutions is contradictory or cannot be implemented, it should be considered that such a combination of technical solutions does not exist and is not within the scope of protection required by the present invention.

[0040] In order to further understand the content, features and effects of the present invention, the following embodiments are given as examples and described in detail with reference to the accompanying drawings:

[0041] Embodiment 1

[0042] Reference Figure 1 and Figure 2 , Figure 1 is a schematic diagram of the structure of the laser shock crease device in Example 1, Figure 2 Schematic diagram of the structure of the laser shock crease device in Embodiment 1 from another perspective. The laser shock crease device in this embodiment includes a loading mechanism 1, a feeding mechanism 2 and a laser shock mechanism 3. The loading mechanism 1 is used for loading the material belt 100; the feeding mechanism 2 is located on one side of the loading mechanism 1, and the feeding mechanism 2 is used for conveying the loaded material belt 100; the laser shock mechanism 3 is arranged on the conveying path of the material belt 100, and the laser shock mechanism 3 performs laser shock crease processing on the passing material belt 100.

[0043] Through the coordinated arrangement of the loading mechanism 1, the feeding mechanism 2 and the laser impact mechanism 3, the material strip 100 is creased by laser impact, which is safe and efficient, and ensures the production efficiency of the entire battery cell. The material strip 100 in this embodiment is a pole piece, and in specific applications, the monopolar pole piece is subjected to laser impact crease treatment. The laser impact method specifically uses a laser shock wave to impact and peel off the surface of the pole piece material strip 100 to form a crease, so as to facilitate the subsequent Z-shaped lamination to form the battery cell body.

[0044] Re-reference Figure 1 and Figure 2Furthermore, the feeding mechanism 1 in this embodiment is a material reel, which can be rotatably carried on a frame (not shown in the figure), and the rolled material tape 100 is sleeved on the material reel. By pulling the material tape 100, the material reel can be driven to rotate, so that the material reel can be passively discharged. Preferably, the feeding mechanism 1 can also use a material reel with a motor as a driving source to actively discharge the material, which will not be repeated here.

[0045] Re-reference Figure 1 to Figure 2 , further, the feeding mechanism 2 is arranged relatively parallel to the loading mechanism 1, and there is a gap between the two. The head of the material belt 100 loaded by the loading mechanism 1 is pulled by the feeding mechanism 2, which in turn drives the loading mechanism 1 to discharge the material, and the process of the material belt 100 being pulled is the process of the material belt 100 being conveyed, and the movement path formed between the loading mechanism 1 and the feeding mechanism 2 when the material belt 100 is pulled is the conveying path of the material belt 100. The laser impact mechanism 3 is located above the conveying path of the material belt 100, and the impact end of the laser impact mechanism 3 is facing the conveyed material belt 100, so that the laser impact mechanism 3 forms a laser shock wave on the front side to perform crease processing. The laser impact mechanism 3 in this embodiment can adopt an existing laser emitting device that can emit laser shock waves, which will not be repeated here.

[0046] Refer to Figure 3 , Figure 3It is a structural schematic diagram of the feeding mechanism in the first embodiment. Furthermore, the feeding mechanism 2 includes a feeding drive assembly 21 and a feeding assembly 22. The output end of the feeding drive assembly 21 is connected to the feeding assembly 22. The feeding drive assembly 21 drives the feeding assembly 22, and the feeding assembly 22 feeds the material belt 100. Specifically, the feeding mechanism 2 also includes a feeding frame 20. The feeding frame 20 includes a first mold frame 201 and a second mold frame 202. The first mold frame 201 and the second mold frame 202 are arranged in parallel, and the first mold frame 201 and the second mold frame 202 are opposite to each other, and there is a gap between the two. In this embodiment, the first mold frame 201 and the second mold frame 202 can adopt a hollow frame, and the longitudinal sections of the first mold frame 201 and the second mold frame 202 are rectangular, and the long side opposite to the first mold frame 201 and the second mold frame 202 is in an open state. The feeding assembly 22 includes a first feeding member 221 and a second feeding member 222 arranged side by side. The material belt 100 passes between the first feeding member 221 and the second feeding member 222. Specifically, the first feeding member 221 is rotatably connected to the first mold frame 201, and the second feeding member 222 is rotatably connected to the second mold frame 202. The first feeding member 221 is parallel to the second feeding member 222, and there is a gap between the first feeding member 221 and the second feeding member 222, and the gap can be used for the material belt 100 to pass through. The first feeding member 221 and the second feeding member 222 cooperate to convey the material belt 100. Preferably, the width of the gap between the first feeding member 221 and the second feeding member 222 is the same as the thickness of the material belt 100. In this embodiment, the first feeding member 221 and the second feeding member 222 are both rollers. The feeding drive assembly 21 is arranged at the end of the first mold frame 201, and the output end of the feeding drive assembly 21 is connected to the first feeding member 221. The first feeding piece 221 and the second feeding piece 222 cooperate with each other to act on the material belt 100. Specifically, the second feeding piece 222 acts on the material belt 100 so that the material belt 100 is closely attached to or pressed on the first feeding piece 221. In this way, when the feeding drive assembly 21 drives the first feeding piece 221 to rotate, the material belt 100 can be pulled with the cooperation of the second feeding piece 222 to complete the transmission process. The feeding drive assembly 21 in this embodiment can be a motor, and its output shaft passes through the first mold frame 201 and is connected to the end shaft of the first feeding piece 221 through a shaft connector. Preferably, the surfaces of the first feeding piece 221 and the second feeding piece 222 can be coated with a soft material to avoid damage to the material belt 100 during transmission. It can be understood that the diameter of the first feeding member 221, that is, the roller shaft, is known, and the rotation angle of the motor-driven roller shaft is controllable, because the rotation angle of the roller shaft is also known. In this way, the arc length of the roller shaft, that is, the length of the conveyor belt 100, can be calculated through the arc length formula. Therefore, when the motor is driven, the belt 100 can be driven in a fixed section, so that the conveyor belt 100 can be conveyed to a determined length each time, thereby ensuring the accuracy of the crease processing position.

[0047] Re-reference Figure 3 Furthermore, the feeding mechanism 2 also includes a feeding adjustment component 23. The feeding adjustment component 23 is connected to the second feeding member 222. The feeding adjustment component 23 is used to adjust the position of the second feeding member 222 relative to the first feeding member 221. It can be understood that the material belt 100 has different thicknesses. By adjusting the positional relationship between the second feeding member 222 and the first feeding member 221 through the feeding adjustment component 23, the second feeding member 222 and the first feeding member 221 can be adapted to convey material belts 100 of different thicknesses, thereby increasing the adaptability compatibility of the device. In addition, in specific applications, the position between the second feeding member 222 and the first feeding member 221 can also be adjusted according to the tightness of the material belt 100 in the feeding state to avoid the problem of slippage of the material belt 100 during transmission.

[0048] Specifically, there are two feed adjustment components 23, and the two feed adjustment components 23 are connected to the two ends of the second feed member 222 respectively. The two feed adjustment components 23 are adjusted synchronously so that the second feed member 222 as a whole is away from or close to the first feed member 221, so as to adjust the interval width between the first feed member 221 and the second feed member 222. The feed adjustment component 23 in this embodiment includes a feed adjustment frame 231, a feed adjustment driving member 232, a feed adjustment guide member 233 and a feed adjustment slider (not shown in the figure). The feed adjustment frame 231 is plate-shaped, which is located on the side of the second mold frame 202 away from the first mold frame 201 and close to the end of the second mold frame 202. The feed adjustment frame 231 is parallel to the second mold frame 202. The feed adjustment driving member 232 is arranged on the feed adjustment frame 231, and its output end is connected to the side of the second mold frame 202 away from the first mold frame 201. The feed adjustment driving member 232 in this embodiment is a cylinder. The feed adjustment slider is slidably connected to the inside of the second mold frame 202, and can slide along the height direction of the second mold frame 202. The end of the second feed piece 222 is rotatably connected to the feed adjustment slider. There are two feed adjustment guides 233, one end of the two feed adjustment guides 233 is connected to the feed adjustment frame 231, and the other end of the two feed adjustment guides 233 is connected to the feed adjustment module after vertically passing through the second mold frame 202. The feed adjustment guide 233 in this embodiment is a combination of a guide column and a guide sleeve. When the feed adjustment driving member 232 is driven, it acts in the reverse direction on the feed adjustment frame 231, driving the feed adjustment guide 233 to move linearly in a direction perpendicular to the second mold frame 202, thereby driving the feed adjustment slider to move synchronously, driving the second feed piece 222 to approach or move away from the first feed piece 221.

[0049] Re-reference Figure 3Furthermore, the feeding mechanism 2 also includes a supporting assembly 24. It can be understood that the material belt 100 is a soft body, and the supporting assembly 24 supports the material belt 100 before and after the first feeding piece 221 and the second feeding piece 222 are conveyed, so that the material belt 100 can be more easily moved in and out of the interval between the first feeding piece 221 and the second feeding piece 222 to avoid material collapse. Specifically, the supporting assembly 24 includes two supporting plates 241, and the two supporting plates 241 are respectively arranged on the opposite sides of the first mold frame 201, and are adjacent to the opening directly facing the first mold frame 201 and the second mold frame 202. Preferably, the two supporting plates 241 are both in a downward tilted state to facilitate the material belt 100 to enter and exit the interval between the first feeding piece 221 and the second feeding piece 222.

[0050] Re-reference Figure 3 Furthermore, the feeding mechanism 2 further includes a limiting assembly 25. The limiting assembly 25 is used to limit the distance between the first feeding member 221 and the second feeding member 222 to prevent the first feeding member 221 and the second feeding member 222 from acting excessively on the material belt 100 and causing damage to the material belt 100. The limiting assembly 25 includes a limiting block 251 and a limiting column 252. The limiting block 251 is provided on the outer wall of the first mold frame 201 and is located at a right angle to the first mold frame 201. The limiting column 252 is provided on the outer wall of the second mold frame 202 and is located at a right angle to the second mold frame 202. The limiting block 251 and the limiting column 252 are directly opposite to each other, and abutting relationship can be formed between the two. When the limiting block 251 and the limiting column 252 are in abutment, the distance between the first mold frame 201 and the second mold frame 202 can be limited, thereby achieving the purpose of limiting the distance between the second feeding member 222 and the first feeding member 221. In this embodiment, the number of the limiting blocks 251 and the limiting columns 252 are both four, and the four limiting blocks 251 and the four limiting columns 252 are respectively arranged at the four corners of the first mold frame 201 and the second mold frame 202.

[0051] Re-reference Figure 1 and Figure 2 Furthermore, the laser shock crease device in this embodiment further includes a carrying mechanism 4. The carrying mechanism 4 is arranged on the conveying path of the material strip 100 and is opposite to the laser shock mechanism 3. The carrying mechanism 4 carries the material strip 100 in the laser shock crease processing state. The carrying mechanism 4 is arranged in coordination with the laser shock mechanism 3 so that the laser shock wave can accurately impact a certain position of the material strip 100, which is convenient for forming a crease and also avoids damage to the non-crease position of the material strip 100.

[0052] Specifically, the bearing mechanism 4 includes a bearing frame body 41 and a supporting assembly 42. The supporting assembly 42 is rotatably connected in the bearing frame body 41, and the material belt 100 is wound around the supporting assembly 42. A laser shock position 411 is provided at one end of the bearing frame body 41 facing the laser shock mechanism 3. The bearing frame body 41 in this embodiment includes a bearing frame body 410 and a laser shock plate 412. The bearing frame body 410 is an approximately "U"-shaped frame, and the supporting assembly 42 is rotatably connected in the open end of the bearing frame body 410. The laser shock plate 412 is provided at the open end of the bearing frame body 410 and is located above the supporting assembly 42. The laser shock plate 412 covers the supporting assembly 42. The laser impact position 411 is a strip-shaped through hole opened along the length direction of the laser impact plate 412, so that only a thin strip of the material strip 100 wound on the support component 42 is leaked to the impact end of the laser impact mechanism 3, so that the laser impact mechanism 3 can accurately perform laser impact on the part of the material strip 100 leaking to the laser impact position 411 to form a corresponding fold, and can also protect other parts of the material strip 100 through the laser impact plate 412 to avoid damage. The support component 42 in this embodiment is a roller.

[0053] Re-reference Figure 1 and Figure 2 Furthermore, the laser shock crease device in this embodiment further includes a material stretching mechanism 5. The material stretching mechanism 5 is adjacent to the carrying mechanism 4, and is used to stretch the material strip 100 carried by the carrying mechanism 4. Through the stretching of the material stretching mechanism 5, the material strip 100 carried by the carrying mechanism 4 can be stretched to avoid wrinkles that affect the quality of the crease formed by the laser shock mechanism 3.

[0054] Specifically, the material stretching mechanism 5 includes two material stretching components 51. The two material stretching components 51 are respectively located on opposite sides of the bearing mechanism 4, and the material stretching height of the material stretching components 51 is lower than the bearing height of the bearing mechanism 4. The material belt 100 is respectively wound around the two material stretching components 51. In this embodiment, one material stretching component 51 is close to the feeding mechanism 1, and the other material stretching mechanism 51 is close to the feeding mechanism 2. The material belt 100 is wound around the former material stretching component 51 with a lower height, and then extends obliquely upward to be wound around the bearing mechanism 4 with a higher height, and then extends obliquely downward to be wound around the latter material stretching component 52 with a lower height, so that the material belt 100 forms a "V"-shaped tension state. In actual application, the height position of the material stretching component 51 can be further lowered or raised to adjust the tension of the material belt 100. The material stretching component 51 includes a material stretching frame 511 and a material stretching member 512. The material stretching frame 511 in this embodiment is also approximately a "U"-shaped frame, and its opening direction is opposite to the bearing frame body 410. The material stretching member 512 is rotatably connected to the open end of the material stretching frame 511 , and the material belt 100 is wound around the material stretching member 512 . The material stretching member 512 in this embodiment is a roller.

[0055] Re-reference Figure 1 and Figure 2 Furthermore, the laser shock crease device in this embodiment also includes a first dust removal mechanism 6. The first dust removal mechanism 6 is located on the conveying path of the material strip 100 and is opposite to the laser shock mechanism 3. The first dust removal mechanism 6 is used to vacuum clean the material strip 100 in the laser shock crease processing state. It can be understood that the laser shock mechanism 3 will peel off the surface of the pole piece during the process of forming a crease by laser shock, thereby generating dust. If the cleaning process is not carried out in time, it will affect the quality of the subsequent battery cells, and will also affect the mechanism in the device and the working environment. Through the vacuum cleaning of the first dust removal mechanism 6, the dust generated by the laser shock can be removed in time, the quality of the folded solder material strip 100 and the battery cells can be ensured, and the working environment can be purified. The first dust removal mechanism 6 in this embodiment is arranged on the laser shock plate 412, and its dust removal end faces the laser shock position 411. Specifically, the first dust removal mechanism 6 includes two dust suction parts 61. The two dust suction parts 61 are respectively arranged on the laser shock plate 412 and are respectively located on the opposite sides of the laser shock position 411. The suction end of each suction part 61 faces the laser shock position 411. Preferably, the suction end of each suction part 61 is adjacent to the laser shock position 411. Preferably, the suction end of the suction part 61 is a slope structure, so that the suction ends of the two suction parts 61 form a "V"-shaped structure to avoid interference with the laser shock wave of the laser shock mechanism 3. The suction part 61 in this embodiment is a dust hood, which is connected to an external vacuum cleaner for dust collection.

[0056] Continue to refer to Figure 1 , Figure 2 and Figure 4 , Figure 4 It is a schematic diagram of the structure of the second dust removal mechanism in the first embodiment. Furthermore, the laser shock crease device in this embodiment also includes a second dust removal mechanism 7. The second dust removal mechanism 7 is located on the transmission path of the material belt 100 and is adjacent to the feeding mechanism 2. The second dust removal mechanism 7 is used to brush and clean the material belt 100 after the laser shock crease treatment. After the first dust removal mechanism 6 vacuums and cleans the material belt 100 in the laser shock crease treatment state, the second dust removal mechanism 7 brushes and cleans the material belt 100 after the laser shock crease treatment, thereby realizing secondary dust removal, so as to increase the cleanliness of the material belt 100 and further ensure the dust removal effect of the material belt 100.

[0057] Re-reference Figure 4Furthermore, the second dust removal mechanism 7 includes a dust removal drive component 71 and a dust removal component 72. The output end of the dust removal drive component 71 is connected to the dust removal component 72. The dust removal drive component 71 drives the dust removal component 72, and the dust removal component 72 brushes and cleans the material belt 100 after the laser shock crease treatment. The dust removal component 72 in this embodiment includes a first dust removal component 721 and a second dust removal component 722. The material belt 100 passes between the first dust removal component 721 and the second dust removal component 722. The output end of the dust removal drive component 71 is connected to one end of the first dust removal component 721 and the second dust removal component 722, which drives the first dust removal component 721 and the second dust removal component 722 to remove dust from the passing material belt 100.

[0058] Specifically, the second dust removal mechanism 7 also includes a dust removal frame 70. The dust removal frame 70 includes a dust removal bearing base plate 701, a dust removal bearing side plate 702, a first bearing end plate 703 and a second dust removal end plate 704. A dust leakage port 7011 is provided on the dust removal bearing base plate 701. The dust removal bearing side plate 702 is vertically arranged on the surface of the dust removal bearing base plate 701 and is located on one side of the dust leakage port 7011. The first bearing end plate 703 is vertically arranged on the surface of the dust removal bearing base plate 701 and is close to one end of the dust removal bearing base plate 701. Preferably, the first bearing end plate 703 is vertically connected to the dust removal bearing side plate 702. The second dust removal end plate 704 is vertically arranged on the dust removal bearing side plate 702 and is close to the other end of the dust removal bearing base plate 701. The second dust removal end plate 704 is opposite to the first dust removal end plate 713. The first dust removal member 721 and the second dust removal member 722 are arranged side by side with a gap between them. One end of the first dust removal member 721 and the second dust removal member 722 are respectively rotatably connected to the first bearing end plate 703, and the other ends of the first dust removal member 721 and the second dust removal member 722 are respectively rotatably connected to the second dust removal end plate 714, and the first dust removal member 721 is parallel to the second dust removal member 722. The dust removal drive assembly 71 includes a dust removal drive member 711, a drive linkage member 712 and a drive frame 713. The drive frame 713 is arranged on the side of the first bearing end plate 703 facing away from the second dust removal end plate 704. The drive linkage member 712 is arranged in the drive frame 713, and the ends of the first dust removal member 721 and the second dust removal member 722 pass through the first bearing end plate 703 and are respectively connected to one end of the drive linkage member 712. The dust removal drive member 711 is arranged on the outer wall of the drive frame 713, and its output end is connected to the other end of the drive linkage member 712. The dust removal drive member 711 drives the driving linkage member 712, and the driving linkage member 712 drives the first dust removal member 721 and the second dust removal member 722 to rotate synchronously, and the first dust removal member 721 and the second dust removal member 722 that rotate synchronously brush the material belt 100. In specific applications, the dust removal drive member 711 can use a motor, and the driving linkage member 712 can use a gear box to form a linkage relationship. The first dust removal member 721 and the second dust removal member 722 are both roller brushes, that is, the roller and the brush sleeved outside the roller cooperate. The dust removal drive assembly 71 drives the first dust removal member 721 and the second dust removal member 722 to rotate synchronously, and the brushes of the first dust removal member 721 and the second dust removal member 722 cooperate with each other to brush the upper and lower surfaces of the material belt 100. Preferably, the brushes of the first dust removal member 721 and the second dust removal member 722 can be soft brushes.

[0059] In conjunction with reference Figure 5 , Figure 5Schematic diagram of the structure of the dust removal drive assembly in Example 1. Furthermore, the driving linkage member 712 includes a main driving gear portion 7121, a linkage gear portion 7122, a first driven gear portion 7123 and a second driven gear portion 7124. The main driving gear portion 7121, the linkage gear portion 7122, the first driven gear portion 7123 and the second driven gear portion 7124 are respectively rotatably connected to the driving frame 713, wherein the first driven gear portion 7123 and the second driven gear portion 7124 are respectively coaxially connected to the rollers of the first dust removal member 721 and the second dust removal member 722 passing through the driving frame 713. The output end of the dust removal driving member 711 is connected to the main drive gear portion 7121, and the main drive gear portion 7121 is respectively meshed with the linkage gear portion 7122 and the second driven gear portion 7124, and the linkage gear portion 7122 is meshed with the first driven gear portion 7123. In this way, the first driven gear portion 7123 and the second driven gear portion 7124 can be synchronously driven to rotate synchronously by the driving of the dust removal driving member 711, thereby driving the first dust removal member 721 and the second dust removal member 722 to rotate synchronously for dust removal. The main drive gear portion 7121, the linkage gear portion 7122, the first driven gear portion 7123 and the second driven gear portion 7124 in this embodiment are all the cooperation of gears and gear shafts, which will not be repeated here.

[0060] Continue to refer to Figures 4 to 6 , Figure 6 It is a structural schematic diagram of the adjustment limiting member and the adjustment part in the first embodiment. Furthermore, the second dust removal mechanism 7 also includes a dust removal adjustment component 73. The adjustment end of the dust removal adjustment component 73 is connected to the other end of the first dust removal component 721 and the second dust removal component 722. The dust removal adjustment component 73 is used to adjust the dust removal position of the first dust removal component 721 and the second dust removal component 722. Specifically, the adjustment end of the dust removal adjustment component 73 is respectively connected to the end of the first dust removal component 721 and the second dust removal component 722 facing away from the dust removal drive component 71, so as to simultaneously adjust the first dust removal component 721 and the second dust removal component 722, so that the first dust removal component 721 and the second dust removal component 722 are close to each other or away from each other, so as to achieve the purpose of adjusting the distance between the first dust removal component 721 and the second dust removal component 722, and then can be adapted and compatible to remove dust from material strips 100 of different thicknesses.

[0061] Specifically, the dust removal adjustment component 73 includes an adjustment drive member 731, an adjustment linkage member 732 and an adjustment limit member 733. The output end of the adjustment drive member 731 is connected to the adjustment linkage member 732. The ends of the first dust removal member 721 and the second dust removal member 722 are both provided with an adjustment portion 723. The adjustment limit member 733 is connected to the adjustment portion 723. The adjustment drive member 731 drives the adjustment linkage member 732, and the adjustment linkage member 732 acts on the adjustment portion 723 and drives the first dust removal member 721 and the second dust removal member 722 to adjust the dust removal position. The adjustment limit member 733 is used for position adjustment restriction. Among them, the adjustment drive member 731 is installed on the dust removal bearing side plate 702 through a fixed plate, and the adjustment drive member 731 in this embodiment is a cylinder. The adjustment linkage member 732 is located between the second dust removal end plate 704 and the adjustment drive member 731. The output end of the adjusting driving member 731 is connected to one end of the adjusting linkage member 732, which drives the adjusting linkage member 732 to move linearly in a direction parallel to the dust removal bearing bottom plate 701; the other end of the adjusting linkage member 732 is provided with two adjusting inclined surfaces 7321, and the adjusting linkage member 732 in this embodiment is plate-shaped, and the two adjusting inclined surfaces 7321 are approximately "eight" shaped. The second dust removal end plate 704 is an I-shaped plate. The number of the adjusting limiting members 733 is two, and one end of the two adjusting limiting members 733 is respectively connected to one end of the second dust removal end plate 704 close to the dust removal bearing side plate 702, and the other end of the two adjusting limiting members 733 is respectively connected to the adjusting portion 723 of the first dust removal member 721 and the second dust removal member 722. The adjusting limiting member 733 in this embodiment is a tension spring. The adjusting portion 723 includes an adjusting plate 7231 and an adjusting wheel 7232. One end of the adjustment plate 7231 is rotatably connected to one end of the second dust removal end plate 704 away from the dust removal bearing side plate 702, and the other end of the adjustment plate 7231 is connected to the other end of the adjustment limiter 733; the adjustment wheel 7232 is rotatably connected to the adjustment plate 7231 and close to the adjustment limiter 733. The rollers of the first dust removal member 721 and the second dust removal member 722 are rotatably connected to the adjustment plate 7231, respectively. Preferably, the first dust removal member 721 and the second dust removal member 722 are close to the adjustment wheels 7232 on their respective adjustment plates 7231. When the two adjustment limiters 733 are in the pulled apart state, their reverse force causes the two adjustment inclined surfaces 7321 of the adjustment linkage member 732 to abut against the two adjustment wheels 7232, respectively, and the two adjustment plates 7231 form an approximate "eight"-shaped structure. During adjustment, the adjustment driving member 731 drives the adjustment linkage member 732 to move linearly, so that the two adjustment wheels 7232 roll on the two adjustment inclined surfaces 7321 respectively. In this way, the degree to which the two adjustment plates 7231 are opened or closed can drive the first dust removal member 721 and the second dust removal member 722 to move closer to or away from each other to complete the adjustment action.

[0062] Preferably, the dust removal drive assembly 71 also includes an auxiliary adjustment member 714. When the first dust removal member 721 and the second dust removal member 722 are adjusted in position, the dust removal drive member 711 needs to adjust the position of the first dust removal member 721 and the second dust removal member 722 synchronously driven by the auxiliary adjustment member 714 to ensure the stability of the drive. In addition, the first dust removal member 721 and the second dust removal member 722 can be adjusted for parallel displacement to ensure the adjustment effect. Specifically, the auxiliary adjustment member 714 includes an auxiliary adjustment drive part 7141, an auxiliary adjustment linkage part 7142, an auxiliary adjustment limit part 7143 and an auxiliary adjustment part 7144. The number of the auxiliary adjustment parts 7144 is two, and the auxiliary adjustment part 7144 in this embodiment includes an auxiliary adjustment plate 71441 and an auxiliary roller 71442. The first driven gear part 7123 and the second driven gear part 7124 are respectively rotatably connected to one side of the two auxiliary adjustment plates 71441. The ends of the first dust removal member 721 and the second dust removal member 722 away from the dust removal adjustment assembly 73 pass through the first bearing end plate 703 and the auxiliary adjustment plate 71441 in sequence, and are respectively coaxially connected to the first driven gear part 7123 and the second driven gear part 7124. The two auxiliary rollers 71442 are respectively rotatably connected to the two auxiliary adjustment plates 71441 and are respectively located on one side of the first driven gear part 7123 and the second driven gear part 7124. There are two auxiliary adjustment limit parts 7143. The auxiliary adjustment limit parts 7143 in this embodiment are compression springs. One end of the auxiliary adjustment limit part 7143 is connected to the first bearing end plate 703 through the compression spring mounting plate 71431, and the other end is connected to the auxiliary adjustment plate 71441 and is close to the auxiliary roller 71442. The two auxiliary adjustment plates 71441 are approximately in an "eight"-shaped structure, the auxiliary adjustment linkage part 7142 is in a plate shape, one end of which has two auxiliary inclined surfaces 71421, and the two auxiliary inclined surfaces 71421 are also approximately in an "eight"-shaped structure, and the auxiliary adjustment limiter 7143 is in a compressed state, which acts on the auxiliary adjustment plate 71441, so that the two auxiliary rollers 71442 are respectively abutted against the two auxiliary inclined surfaces 71421. The auxiliary adjustment drive part 7141 is a cylinder, which is installed on the first dust removal end plate 703 through a mounting plate, and the output end of the auxiliary adjustment drive part 7141 is connected to the end of the auxiliary adjustment linkage part 7142 away from the auxiliary inclined surface 71421. The auxiliary adjustment driving part 7141 drives the auxiliary adjustment linkage part 7142 to move linearly, and the auxiliary inclined surface 71421 acts on the auxiliary roller 71442, so that the auxiliary roller 71442 rolls on the auxiliary inclined surface 71421, thereby driving the degree of opening or closing of the auxiliary adjustment plate 71441, and cooperating with the dust removal adjustment component 73 to synchronously complete the adjustment action of the first dust removal component 721 and the second dust removal component 722.

[0063] Re-reference Figure 4, further, the second dust removal mechanism 7 in this embodiment also includes a dust suction assembly 74. It can be understood that the dust swept by the first dust removal member 721 and the second dust removal member 722 needs to be sucked out and discharged in time to ensure the dust removal effect. The dust suction assembly 74 in this embodiment includes a dust removal member 741 and a dust suction member 742. Among them, the dust removal member 741 is rod-shaped, and there are two of them. The two dust removal members 741 are parallel to the first dust removal member 721 and the second dust removal member 722, respectively, and the two ends of each dust removal member 741 are connected to the first dust removal end plate 703 and the second dust removal end plate 704, respectively. The dust suction member 742 is a dust suction cover, and there are two of them. One dust suction member 742 is arranged on the dust removal bearing bottom plate 701, and is opposite to the first dust removal member 721 through the dust leakage port 7011, and the other dust suction member 742 is arranged on the dust removal bearing side plate 702, and is opposite to the second dust removal member 722. When the first dust removing member 721 and the second dust removing member 722 are rolling to brush dust, their brushes will act on the dust removing member 741. The dust removing member 741 interferes with the brushes, removes the dust on the brushes, and then is sucked away and discharged by the vacuum cleaner connected to the dust collecting member 742.

[0064] Embodiment 2

[0065] Reference Figure 7 , Figure 7 Flow chart of the laser shock crease method in Example 2. The laser shock crease method in this embodiment can be implemented based on the laser shock crease device in Example 1, and specifically includes the following steps:

[0066] S1, loading material belt.

[0067] S2, conveying the loaded material belt.

[0068] S3, performing laser shock crease processing on the conveyed material strip.

[0069] The conveyed material strip is creased by laser impact, which is safe and efficient, ensuring the production efficiency of the entire battery cell.

[0070] Among them, in step S1, specifically, the material belt 100 is loaded by the loading mechanism 1, the material belt 100 is transported by the feeding mechanism 2, and the material belt 100 is laser impacted by the laser impact mechanism 3 to form creases on the material belt 100, which will not be repeated here.

[0071] Preferably, the laser shock crease method in this embodiment, before the material belt for feeding is conveyed, further includes the following steps: S0, preset the crease position of the material belt. It can be understood that the material belt 100 is in the shape of a belt, and when the required pole pieces have different specifications and sizes, the positions of the two adjacent creases will change. Therefore, in view of the different sizes of pole pieces of different battery products, it is necessary to calculate the crease position before feeding, so as to preset the position where the laser shock crease is required to ensure the accuracy of the crease formation. In specific applications, the feeding mechanism 2 can be used to uniformly transmit the material belt 100, and the laser shock mechanism 3 can perform laser shock crease treatment at equal intervals, or the feeding mechanism 2 can be used to convey the material belt 100 in a fixed section, and the laser shock mechanism 3 can perform laser shock crease treatment on the fixed section conveyed material belt 100 at intervals. In step S2 of this embodiment, the material belt for feeding is conveyed by means of fixed section conveying of the material belt according to the preset crease position of the material belt. Among them, the implementation principle and method of the fixed-segment transmission of the transmission mechanism 2 have been described in the first embodiment and will not be repeated here.

[0072] Preferably, in step S3, the conveyed material strip is subjected to laser shock crease treatment, and further includes: S40, performing a first cleaning on the material strip in the laser shock crease treatment state. The first cleaning in this embodiment is dust cleaning. The process of laser shock crease treatment by the laser shock mechanism 3 will peel off the surface of the pole piece and generate dust. Dust cleaning treatment of the dust can ensure the quality of the material strip 100 and the working environment. The dust cleaning in this embodiment is implemented by the first dust removal mechanism 6 in the first embodiment, which will not be repeated here.

[0073] Preferably, after the conveyed material strip is subjected to laser shock crease treatment, the process further includes: step S4, performing a second cleaning on the material strip after the laser shock crease treatment. The second cleaning in this embodiment is dust brushing cleaning. The first cleaning and the second cleaning are performed in the laser shock crease treatment state and after the laser shock crease treatment, respectively, and the two methods of dust suction cleaning and dust brushing cleaning are respectively adopted, which can further improve the cleanliness of the material strip 100, ensure the dust removal and cleaning effect, and further ensure the quality of the subsequent battery cell body.

[0074] Preferably, before the conveyed material belt is subjected to laser shock crease treatment, the method further includes: step S21, supporting the material belt. Step S22, stretching the carried material belt. In other words, the material belt 100 is supported and stretched during the conveying process, so that the material belt 100 facing the laser shock mechanism 3 to be laser-shocked can be in a wrinkle-free supported and stretched state, while providing protection for the non-laser shock part to ensure the quality of crease formation. The bearing protection and stretching of the material belt 100 are respectively realized by the bearing mechanism 4 and the stretching mechanism 5 in the first embodiment, which will not be described in detail here.

[0075] In summary, the crease treatment of the material strip by laser impact is safe and efficient, ensuring the production efficiency of the entire battery cell. In addition, secondary cleaning is performed during and after the crease formation to ensure the quality of the crease material strip and the working environment.

[0076] The above is only an embodiment of the present invention and is not intended to limit the present invention. For those skilled in the art, the present invention may have various modifications and variations. Any modification, equivalent substitution, improvement, etc. made within the spirit and principle of the present invention should be included in the scope of the claims of the present invention.

Claims

1. A method for laser impact crease, characterized in that: Used for crease processing of battery cell pole pieces, including: Feeding belt; Presetting the fold position of the material strip; According to the preset folding position of the material strip, the material strip is conveyed in sections; Performing laser shock crease treatment on the conveyed material belt; performing a first cleaning on the material belt in the laser shock crease treatment state, wherein the first cleaning is vacuum cleaning; The material strip after the laser shock crease treatment is cleaned for the second time, and the second cleaning is dust brushing cleaning.

2. The laser shock crease method according to claim 1, characterized in that: Before the conveyed material strip is subjected to laser shock crease processing, the method further comprises: The material strip is supported.

3. The laser shock crease method according to claim 2, characterized in that: Before the conveyed material strip is subjected to laser shock crease processing, the method further comprises: The carried material strip is stretched.

4. A laser shock crease device, characterized in that: The method for laser shock crease according to any one of claims 1 to 3 comprises: A feeding mechanism (1), which is used for feeding the material strip; A feeding mechanism (2) located on one side of the loading mechanism (1); the feeding mechanism (2) is used to convey the material belt for loading; A laser impact mechanism (3) is arranged on a conveying path of the material strip; the laser impact mechanism (3) performs laser impact crease processing on the passing material strip; A first dust removal mechanism (6), the first dust removal mechanism (6) being located on a conveying path of the material strip and opposite to the laser impact mechanism (3), the first dust removal mechanism (6) being used to vacuum and clean the material strip in a laser impact crease processing state; A second dust removal mechanism (7), the second dust removal mechanism (7) is located on the conveying path of the material belt and is adjacent to the feeding mechanism (2), and the second dust removal mechanism (7) is used to brush and clean the material belt after the laser shock crease treatment.

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