Pole piece dust removal equipment for lithium battery processing

Abstract

The invention relates to the field of lithium batteries, in particular to pole piece dust removal equipment for lithium battery processing, which comprises a box body, a rotating shaft, a rotating roller, a baffle plate and the like, a pole piece transversely penetrates through the feeding hole, sequentially bypasses all the rotating rollers and then transversely penetrates out of the discharging hole; the box body is provided with a plurality of baffle plates, and the baffle plates are matched with the rotating rollers; the baffle plate is provided with a flat part and an inclined part. Through a baffling mode, the contact time of the ion airflow and the surface of the pole piece is prolonged, the contact frequency of the ion airflow and the surface of the pole piece is increased, and the problems that in the prior art, when the ion airflow is used for neutralizing the charged dust particles on the pole piece, the contact time of the ion airflow and the charged dust particles is short, and part of the charged particles are not neutralized are solved. And the dust is still left on the surface of the pole piece without being neutralized by the ion airflow, so that the dust removal effect is poor.

Description

Technical Field

[0001] The present invention relates to the field of lithium batteries, and in particular to a pole piece dust removal device for lithium battery processing. Background Art

[0002] Lithium batteries are a type of battery that uses lithium metal or lithium alloy as positive and negative electrode materials and non-aqueous electrolyte solutions. With the rapid development of science and technology, lithium batteries have become the mainstream of the market. During the production process of lithium batteries, the pole pieces need to be cut and processed, and the surface of the pole pieces need to be dusted to ensure the stability of the pole pieces during use. Most of the existing pole piece dust removal devices are manually cleaned during use. This cleaning method is not only inefficient, but also the dust on the pole pieces mostly has positive and negative charged particles, so the adsorption is high, the cleaning effect is poor, and it is relatively inconvenient.

[0003] Existing Chinese patent: A pole piece dust removal device for lithium battery production and processing (publication number CN217474201U). In the pole piece dust removal device for lithium battery production and processing, when the pole piece is wound by the winding roller, the motor can drive the cylinder to rotate through the first gear and the second gear, drive the diverter plate and the brush to scrape and clean the dust on the surface of the pole piece, and at the same time, the ion fan conveys wind with positive and negative charged particles to the diverter plate through the connecting pipe, and sprays it to the pole piece surface through the nozzle, so that the dust charged particles adsorbed on the pole piece surface can be neutralized, thereby improving the dust removal effect and increasing the production quality of the pole piece.

[0004] However, when the device uses the nozzle to spray out the ion airflow, the nozzle will rotate with the circular brush, thereby generating centrifugal force, so that the ion airflow blown out by the nozzle carries the dust particles and is centrifugally thrown out, causing dust diffusion. In addition, the ion airflow blown toward the cleaned part of the electrode will pass through the gap between the brushes, carrying the dust particles and contacting the cleaned part of the electrode, and attaching again, causing secondary pollution. At the same time, the brush is easy to scratch the electrode, and when the ion airflow is used to neutralize the charged dust particles on the electrode, the contact time between the ion airflow and the charged dust particles is short, and some charged particles have not been neutralized yet and are no longer affected by the neutralization effect of the ion airflow, and still remain on the surface of the electrode, resulting in poor dust removal effect. Summary of the invention

[0005] In order to overcome the shortcomings of the problems mentioned in the background, the present invention provides a pole piece dust removal device for lithium battery processing.

[0006] The technical solution is: a kind of electrode dust removal equipment for lithium battery processing, including a box body and a rotating shaft; the box body is rotatably connected with a plurality of rotating shafts distributed at different heights; the box body is provided with a feed port and a discharge port; it also includes rollers, baffles, ion fans and dust collectors; each rotating shaft is provided with a roller, the electrode piece passes through the feed port horizontally, and bypasses all the rollers in turn, and then passes through the discharge port horizontally; the box body is provided with a plurality of baffles, and the baffles are matched with the rollers; the baffles are provided with flat parts and inclined parts; the box body is detachably connected with a plurality of symmetrically distributed ion fans; the box body is detachably connected with a plurality of symmetrically distributed dust collectors.

[0007] Furthermore, the rotating shaft and the rotating roller are both configured as hollow structures, and the rotating shaft and the rotating roller are interconnected; and the rotating roller is provided with a plurality of suction holes.

[0008] Furthermore, the suction hole is configured as a trumpet-shaped structure that is larger outside and smaller inside.

[0009] Furthermore, each rotating roller is provided with an arc-shaped baffle, the arc-shaped baffle is in a semi-wrapped state with respect to the rotating roller, and the arc-shaped baffle is fixedly connected to the box body.

[0010] Furthermore, each arc-shaped baffle is fixedly connected with a plurality of symmetrically distributed interception plates, and during dust removal work, the interception plates fit the pole pieces.

[0011] Furthermore, each intercepting plate is provided with a guide portion.

[0012] Furthermore, the baffle is configured to be made of dust absorbing material.

[0013] Furthermore, the baffle is arranged as a conveyor belt structure; the box body is provided with a plurality of supporting plates, and the supporting plates cooperate with the baffles; the box body is installed with a plurality of electrically driven conveying rollers, and the electrically driven conveying rollers cooperate with the baffles; each baffle is provided with a cleaner, and the cleaner is installed on the box body; each baffle is provided with a plurality of long rods, and the long rods are rotatably connected to the box body, and the long rods are close to the supporting plates.

[0014] Furthermore, each supporting plate is rotatably connected to a plurality of rotating rods equidistantly distributed along the oblique sides of the supporting plate.

[0015] Furthermore, the long rod is provided with a plurality of through slots.

[0016] The beneficial effects of the present invention are: 1. The present invention prolongs the contact time between the ion airflow and the surface of the electrode and increases the number of contacts between the ion airflow and the surface of the electrode by means of deflection, thereby solving the problem in the prior art that when the ion airflow is used to neutralize the charged dust particles on the electrode, the contact time between the ion airflow and the charged dust particles is short, and some charged particles have not been neutralized and are no longer affected by the neutralization effect of the ion airflow, and still remain on the surface of the electrode, resulting in poor dust removal effect.

[0017] 2. The present invention covers the portion of the roller that does not contact the pole piece by means of an arc-shaped baffle, thereby preventing the suction hole from sucking the ion airflow normally flowing in the box channel, resulting in a reduction in the ion airflow in contact with the pole piece and a decrease in the dust removal effect.

[0018] 3. The present invention prevents the ion airflow from entering between the roller and the pole piece by fitting the intercepting plate with the pole piece, causing the pole piece to bulge and affecting the normal flow of the ion airflow in the box channel; and a guide portion is provided on the intercepting plate to prevent the ion airflow from staying between the arc baffle and the intercepting plate and causing a recoil phenomenon, colliding with the overall ion airflow flowing from right to left, causing turbulent airflow in the area and making it difficult for the ion airflow to flow normally.

[0019] 4. The present invention sets the baffle plate as a dust-absorbing material. When the ion airflow carrying dust particles contacts the baffle plate and is guided by the baffle plate, the dust particles carried in the ion airflow are absorbed and intercepted by the baffle plate, thereby reducing the amount of dust particles carried by the ion airflow and avoiding the problem that the ion airflow carrying a large amount of dust particles impacts the surface of the pole piece and causes wear to the surface of the pole piece. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] Figure 1 It is a structural schematic diagram of the present invention; Figure 2 It is a structural cross-sectional view of the box body of the present invention; Figure 3 It is a structural cross-sectional view of the baffle of the present invention; Figure 4 It is a schematic diagram of the combined structure of the rotating shaft, the rotating roller, the arc-shaped baffle plate and the intercepting plate of the present invention; Figure 5 It is a schematic diagram of the combined structure of the supporting plate and the rotating rod of the present invention; Figure 6 It is a structural schematic diagram of the long rod of the present invention; Figure 7 It is a schematic diagram of the ion airflow direction inside the box of the present invention.

[0021] Markings in the accompanying drawings: 1-box, 2-rotating shaft, 3-rotating roller, 4-baffle, 5-ion fan, 6-dust collector, 10-arc baffle, 11-interception plate, 20-supporting plate, 21-electrically driven conveying roller, 22-cleaner, 23-long rod, 30-rotating rod, 001-pole piece, 3001-suction hole, 4001-flat part, 4002-inclined part, 11001-guide part, 23001-through groove. DETAILED DESCRIPTION

[0022] The following descriptions are merely preferred embodiments of the present invention and are not intended to limit the protection scope of the present invention.

[0023] Example 1 A kind of electrode dust removal equipment for lithium battery processing, such as Figure 1-Figure 7 As shown, it includes a box body 1 and a rotating shaft 2; the box body 1 is rotatably connected to at least five rotating shafts 2 distributed in different heights; the box body 1 is provided with a feed inlet and a discharge outlet; It also includes rollers 3, baffles 4, ion fans 5 and dust collectors 6; each shaft 2 is provided with a roller 3, the pole piece 001 passes through the feed port horizontally, and bypasses all the rollers 3 in turn, and then passes through the discharge port horizontally; the box body 1 is provided with at least two baffles 4, and the baffles 4 are matched with the rollers 3; the baffles 4 are provided with a flat portion 4001 and an inclined portion 4002; the box body 1 is detachably connected to at least two symmetrically distributed ion fans 5; the box body 1 is detachably connected to at least two symmetrically distributed dust collectors 6.

[0024] The present invention works specifically as follows: First, if Figure 2 As shown, the pole piece 001 is inserted from left to right into the feed port of the box body 1, so that it passes through all the rollers 3 in sequence, and then passes out from the discharge port of the box body 1, so that the pole piece 001 is wavy in the box body 1, and the wavy pole piece 001 divides the inside of the box body 1 into two channels, an upper channel and a lower channel; Next, the pole piece 001 is controlled to move from left to right through the external winding device. At the same time, the two ion blowers 5 are controlled to output wind with positive and negative charged particles, i.e., ion airflow, to the upper channel and the lower channel of the box 1 respectively, so that the ion airflow passes through the upper channel and the lower channel of the box 1 from right to left. like Figure 7 As shown, the ion airflow passing through the upper channel of the box body 1 will first contact the upper surface of the pole piece 001, and after being guided by the wavy pole piece 001, contact the flat part 4001 of the upper baffle plate 4, and after passing through the flat part 4001, contact the inclined part 4002 of the upper baffle plate 4, and after being guided by the inclined part 4002, contact the upper surface of the lower part of the pole piece 001, repeat this process several times, and then enter the dust collector 6 above from the left part of the upper channel of the box body 1; The ion airflow passing through the lower channel of the box body 1 will first contact the inclined portion 4002 of the lower baffle plate 4, and then be guided by the inclined portion 4002 to blow to the lower surface of the wavy pole piece 001, and then be guided by the wavy pole piece 001 to blow to the flat portion 4001 of the lower baffle plate 4, and then contact the next inclined portion 4002 of the baffle plate 4, and repeat this process for many times, and then enter the dust collector 6 below from the left part of the lower channel of the box body 1; In the above process, the ion airflow is deflected and guided by the inclined portion 4002 of the deflector 4, which will have a direct impact on the upper and lower surfaces of the electrode 001, so that the ion airflow is neutralized with the charged dust particles adsorbed on the surface of the electrode 001, so that the dust particles can follow the ion airflow and enter the corresponding dust collector 6 from the left part of the box 1. In addition, by means of deflection, the contact time between the ion airflow and the surface of the electrode 001 is extended, and the number of contacts between the ion airflow and the surface of the electrode 001 is increased, which solves the problem in the prior art that when using the ion airflow to neutralize the charged dust particles on the electrode 001, the contact time between the ion airflow and the charged dust particles is short, and some charged particles have not been neutralized and are no longer affected by the neutralization effect of the ion airflow, and still remain on the surface of the electrode 001, resulting in poor dust removal effect.

[0025] Example 2 On the basis of the above-mentioned embodiment 1, Figure 4 As shown, the rotating shaft 2 and the rotating roller 3 are both configured as hollow structures, and the rotating shaft 2 and the rotating roller 3 are interconnected; the rotating roller 3 is provided with a plurality of suction holes 3001 .

[0026] The suction hole 3001 is configured as a trumpet-shaped structure that is larger outside and smaller inside. Compared with a straight hole of the same diameter, the trumpet-shaped suction hole 3001 is more likely to form a stable airflow and avoid dust particles from settling and clogging in the suction hole 3001 .

[0027] Each roller 3 is provided with an arc-shaped baffle 10 , which half-wraps the roller 3 and is fixedly connected to the box body 1 .

[0028] Each arc-shaped baffle 10 is fixedly connected with at least two symmetrically distributed interception plates 11. During dust removal, the interception plates 11 fit the pole pieces 001.

[0029] Each intercepting plate 11 is provided with a guide portion 11001 .

[0030] The present invention works specifically as follows: In the above-mentioned dust removal work, when the pole piece 001 passes through the roller 3, the pump machine of the control peripheral device sequentially sucks out the non-charged dust particles on the surface of the pole piece 001 in advance through the rotating shaft 2, the roller 3 and the suction hole 3001, so that the charged dust particles on the surface of the pole piece 001 can be smoothly neutralized and removed by the ion airflow, reducing the difficulty of subsequent dust removal work.

[0031] At the same time, the arc baffle 10 covers the part of the roller 3 that does not contact the pole piece 001, preventing the suction hole 3001 from sucking the ion airflow normally flowing in the channel of the box 1, resulting in a reduction in the ion airflow in contact with the pole piece 001 and a decrease in the dust removal effect.

[0032] It should be noted that during the dust removal operation, part of the ion airflow will enter between the roller 3 and the pole piece 001 through the gap between the arc baffle 10 and the pole piece 001, causing bulging on the roller 3. Therefore, the present invention prevents the ion airflow from entering between the roller 3 and the pole piece 001 through the interception plate 11 that fits with the pole piece 001, causing bulging of the pole piece 001 and affecting the normal flow of the ion airflow in the channel of the box 1; and a guide portion 11001 is provided on the interception plate 11 to prevent the ion airflow from staying between the arc baffle 10 and the interception plate 11 and causing a recoil phenomenon, which collides with the overall ion airflow flowing from right to left, causing turbulence in the airflow in this area and making it difficult for the ion airflow to flow normally.

[0033] Example 3 Based on the above embodiment 2, Figure 3 and Figure 5-Figure 6 As shown, the baffle plate 4 is configured to be a dust absorbing material.

[0034] The baffle plate 4 is arranged as a conveyor belt structure; the box body 1 is provided with a plurality of supporting plates 20, and the supporting plates 20 cooperate with the baffle plates 4; the box body 1 is installed with at least four electrically driven conveying rollers 21, and the electrically driven conveying rollers 21 cooperate with the baffle plates 4; each baffle plate 4 is provided with a cleaner 22, and the cleaner 22 is installed on the box body 1; each baffle plate 4 is provided with a plurality of long rods 23, and the long rods 23 are rotatably connected to the box body 1, and the long rods 23 are close to the supporting plates 20.

[0035] Each support plate 20 is rotatably connected to a plurality of rotating rods 30 equidistantly distributed along the hypotenuse of the support plate 20. When the baffle plate 4 moves under the action of the electrically driven conveying roller 21, the rotating rods 30 assist the baffle plate 4 in moving, thereby ensuring that the baffle plate 4 can move smoothly.

[0036] The long rod 23 is provided with a plurality of through grooves 23001. By providing the through grooves 23001, the contact area between the long rod 23 and the baffle plate 4 is reduced, thereby preventing the long rod 23 from pressing dust particles on the baffle plate 4 onto the baffle plate 4 when the baffle plate 4 passes through the long rod 23, causing the dust particles to fit tightly against the baffle plate 4, thereby increasing the difficulty of cleaning the baffle plate 4 by the cleaner 22.

[0037] The present invention works specifically as follows: In the above dust removal work, the ion airflow will carry a large amount of dust particles, which will impact the surface of the pole piece 001 and cause wear on the surface of the pole piece 001; Therefore, the present invention sets the baffle plate 4 to be a dust-absorbing material. When the ion airflow carrying dust particles contacts the baffle plate 4 and is guided by the baffle plate 4, the dust particles carried in the ion airflow are absorbed and intercepted by the baffle plate 4, thereby reducing the amount of dust particles carried by the ion airflow and preventing the ion airflow carrying a large amount of dust particles from colliding with the surface of the pole piece 001 and causing wear on the surface of the pole piece 001.

[0038] It should be noted that after a long period of vacuuming, a large amount of dust particles will adhere to the surface of the baffle 4. If it is not cleaned in time, it will cause secondary pollution to the pole piece 001 in the subsequent dust removal work. Therefore, during the dust removal operation, the electrically driven conveying roller 21 below is controlled to drive the baffle plate 4 below to move clockwise from the front to the back perspective, and the electrically driven conveying roller 21 above is controlled to drive the baffle plate 4 above to move counterclockwise from the front to the back perspective, so that the part of the baffle plate 4 with a large number of dust particles attached can pass through the cleaner 22 and be cleaned by the cleaner 22, thereby achieving non-stop cleaning.

[0039] The above is only a specific embodiment of the present invention, but the protection scope of the present invention is not limited thereto. Any person skilled in the art who is familiar with the technical field can easily think of changes or substitutions within the technical scope disclosed by the present invention, which should be included in the protection scope of the present invention. Therefore, the protection scope of the present invention should be based on the protection scope of the claims.

Claims

1. A dust removal device for lithium battery processing pole pieces, comprising a housing (1) and a rotating shaft (2); the housing (1) is rotatably connected to a plurality of rotating shafts (2) distributed in a staggered manner; the housing (1) is provided with a feed inlet and a discharge outlet; the characteristics are as follows: It also includes a roller (3), a baffle (4), an ion fan (5) and a dust collector (6); each rotating shaft (2) is provided with a roller (3); the pole piece (001) passes through the feed port horizontally, bypasses all the rollers (3) in sequence, and then passes through the discharge port horizontally; the box body (1) is provided with a plurality of baffles (4), and the baffles (4) are matched with the rollers (3); the baffles (4) are provided with a flat portion (4001) and an inclined portion (4002); the box body (1) is detachably connected to a plurality of symmetrically distributed ion fans (5); and the box body (1) is detachably connected to a plurality of symmetrically distributed dust collectors (6).

2. The electrode dust removal equipment for lithium battery processing according to claim 1 is characterized in that: The rotating shaft (2) and the rotating roller (3) are both configured as hollow structures, and the rotating shaft (2) and the rotating roller (3) are interconnected; the rotating roller (3) is provided with a plurality of suction holes (3001).

3. The electrode dust removal equipment for lithium battery processing according to claim 2, characterized in that: The suction hole (3001) is configured as a trumpet-shaped structure that is larger outside and smaller inside.

4. The electrode dust removal equipment for lithium battery processing according to claim 3 is characterized in that: Each rotating roller (3) is provided with an arc-shaped baffle (10), the arc-shaped baffle (10) is in a semi-wrapped state with respect to the rotating roller (3), and the arc-shaped baffle (10) is fixedly connected to the box body (1).

5. The electrode dust removal equipment for lithium battery processing according to claim 4, characterized in that: Each arc-shaped baffle (10) is fixedly connected to a plurality of symmetrically distributed interception plates (11); during dust removal work, the interception plates (11) fit the pole pieces (001).

6. The electrode dust removal equipment for lithium battery processing according to claim 5, characterized in that: Each intercepting plate (11) is provided with a guide portion (11001).

7. A lithium battery processing pole piece dust removal device according to any one of claims 1 to 6, characterized in that: The baffle (4) is set to be a dust absorbing material.

8. The electrode dust removal equipment for lithium battery processing according to claim 7, characterized in that: The baffle plate (4) is arranged as a conveyor belt structure; the box body (1) is provided with a plurality of supporting plates (20), and the supporting plates (20) cooperate with the baffle plates (4); the box body (1) is installed with a plurality of electrically driven conveying rollers (21), and the electrically driven conveying rollers (21) cooperate with the baffle plates (4); each baffle plate (4) is provided with a cleaner (22), and the cleaner (22) is installed on the box body (1); each baffle plate (4) is provided with a plurality of long rods (23), and the long rods (23) are rotatably connected to the box body (1), and the long rods (23) are close to the supporting plates (20).

9. The electrode dust removal equipment for lithium battery processing according to claim 8, characterized in that: Each supporting plate (20) is rotatably connected to a plurality of rotating rods (30) which are equidistantly distributed along the oblique side of the supporting plate (20).

10. The electrode dust removal equipment for lithium battery processing according to claim 9, characterized in that: The long rod (23) is provided with a plurality of through slots (23001).

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