CN209334281U - A lithium battery pole piece dust removal device - Google Patents

Abstract

The utility model belongs to the technical field of the lithium cell technique and specifically relates to indicate a lithium battery pole piece dust collector, it includes frame, clean mechanism, a actuating mechanism, outer housing and guide part, two open and shut actuating mechanism, outer housing and guide part, two guide part is located clearance length direction's both sides respectively, and every guide part all is equipped with the passageway that supplies utmost point ear to pass through. The cleaning mechanism of the application clears away dust or particulate matter on the pole piece, avoids appearing because of the pole piece surface is stained with dust or particulate matter and causes the quality bad; the pole piece is not contacted with the cleaning mechanism in the process of loading the pole piece into the gap between the two cleaning mechanisms, so that the pole piece is prevented from being damaged and protected; the pole lugs are positioned in the channels of the guide parts, so that the pole lugs are prevented from being damaged by the cleaning mechanism while being cleaned; when external motor stopped to transport the pole piece, the actuating mechanism that opens and shuts drove two clean mechanisms and keeps away from each other, avoids the excessive cleanness that clean mechanism caused the pole piece, protects the coating on the pole piece, improves the yields of product.

Description

A lithium battery pole piece dust removal device

technical field

The utility model relates to the technical field of lithium batteries, in particular to a lithium battery pole piece dust removal device.

Background technique

The pole piece after coating is exposed to the air, which is prone to poor quality due to dust or particles on the surface of the pole piece. Usually, the pole piece of a lithium battery is connected to the tab. The tab does not need dust removal, and the pole piece needs dust removal. When the cleaning mechanism When contacting the tabs, it is easy to cause damage to the tabs. Usually, there is paint attached to the pole pieces used to manufacture lithium batteries. The pole pieces are usually roll pole pieces. The roll pole pieces are similar to roll paper. Unwind and drive the pole piece to pass through the gap between the two cleaning mechanisms at a constant speed. When the external motor stops conveying the pole piece and the two cleaning mechanisms keep rotating, the cleaning mechanism will overshoot some areas of the pole piece. Cleaning, the attached paint of the pole piece fades, resulting in poor quality of the pole piece, and the pole piece is easy to directly contact with the cleaning mechanism during the process of loading the pole piece into the gap between the two cleaning mechanisms, resulting in damage to the pole piece.

Contents of the invention

The technical problem to be solved by the utility model is to provide a lithium battery pole piece dust removal device, which can remove the dust or particles on the surface of the pole piece, protect the pole piece and the coating on the pole piece, and can clean the pole piece and can Prevent the tabs from being damaged by the cleaning mechanism.

In order to solve the above technical problems, the utility model adopts the following technical solutions:

A lithium battery pole piece dust removal device, which includes a frame, two cleaning mechanisms that are rotated on the frame and used to remove dust and clean the two sides of the pole piece, and a first drive mechanism that is set on the frame and used to drive the rotation of the cleaning mechanism , an opening and closing drive mechanism arranged on the frame and used to drive the two cleaning mechanisms to move away from or approach each other, an outer cover that is detachably connected to the frame and used to cover the two cleaning mechanisms, and two guide parts arranged on the frame. There is a gap between the two cleaning mechanisms for the pole pieces to pass through, and the opening and closing drive mechanism is used to control the size of the gap;

The two guide parts are respectively located on both sides of the gap in the length direction, and each guide part is provided with a passage for the tab to pass through.

Further, the cleaning mechanism includes a brush tube and a rotating roller that drives the brush tube to rotate, the brush tube is sleeved on the rotating roller, and the first driving mechanism drives the rotating roller to rotate; there is a gap between the two brush tubes for The gap through which the pole piece passes.

Further, the first driving mechanism includes a driving gear, a first driven gear meshing with the driving gear, a second driven gear meshing with the first driven gear, a third driven gear meshing with the driving gear, and a The first driving device keyed to the driving gear, the second driven gear and the third driven gear respectively drive the two rotating rollers to rotate.

Further, the opening and closing drive mechanism includes a first opening and closing plate, a second opening and closing plate corresponding to the first opening and closing plate, a plug slidably arranged on the frame, and a second driving device arranged on the frame and used to drive the plug to move, The third driven gear is rotatably arranged on the first opening and closing plate, the second driven gear and the third driven gear are both rotatably arranged on the second opening and closing plate, and the first opening and closing plate is provided with a first roller which is rotatably arranged on the first opening and closing plate The second opening and closing plate is provided with a second roller that is rotatably arranged on the second opening and closing plate and corresponds to the first roller. The top is provided with a first inclined wall and a second inclined wall intersecting with the first inclined wall. The first inclined wall The first roller is in conflict with the second inclined wall and the second roller is in conflict, and the plug is used to drive the first opening and closing plate and the second opening and closing plate to move away from or approach each other.

Further, the opening and closing driving mechanism also includes an elastic device for driving the first opening and closing plate and the second opening and closing plate to approach each other, the elastic device includes a first elastic component and a second elastic component, and the first elastic component and the second elastic component The first opening and closing plate is elastically connected, and the second elastic component is elastically connected to the second opening and closing plate.

Further, the dust removal device also includes a dust accumulation and ventilation mechanism, and the dust accumulation and ventilation mechanism includes a base, a dust accumulation cover and a plurality of exhaust pipes, the dust accumulation cover is arranged above the base, and the dust accumulation cover is arranged on the brush cylinder. Below, a plurality of exhaust pipes are connected to the substrate, the dust hood is used to collect and carry dust, and the exhaust pipe is used to suck away the dust on the substrate and the dust hood.

Further, the lithium battery pole piece unwinding and dedusting device also includes a jump suppression mechanism for suppressing the jump when the rotating roller rotates, and the jump suppression mechanism includes a fixing part, a first fixing plate, a second fixing plate, a third elastic component and the fourth elastic component, the fixed component is arranged on the frame, and the two rotating rollers are respectively rotated and installed on the first fixed plate and the second fixed plate, and both the first fixed plate and the second fixed plate are arranged on the fixed component. One end of the three elastic components is fixed to the fixing component, and the other end is connected to the first fixing plate. One end of the fourth elastic component is fixed to the fixing component, and the other end is connected to the second fixing plate.

Further, the outer casing is provided with a first through hole for the pole pieces to pass through, the frame is provided with a second through hole corresponding to the first through hole, and the gap between the two brush cylinders is located at the first through hole. Between the through hole and the second through hole, the pole piece sequentially passes through the first through hole, the gap between the two brush cylinders, and the second through hole.

Beneficial effects of the utility model: the utility model includes two cleaning mechanisms, a first driving mechanism, an opening and closing driving mechanism and two guide parts, and the two guide parts are respectively located on both sides of the gap length direction, and each guide part is provided with There is a passage for the tabs to pass through, and the cleaning mechanism removes dust or particles on the pole piece to avoid poor quality caused by dust or particles on the surface of the pole piece; during the process of loading the pole piece into the gap between the two cleaning mechanisms No contact with the cleaning mechanism to prevent damage to the pole piece and protect the pole piece; the pole piece is located in the channel of the guide part, which can not only clean the pole piece, but also prevent the pole piece from being damaged by the cleaning mechanism; the external motor stops the movement of the pole piece While transporting, the opening and closing drive mechanism drives the two cleaning mechanisms away from each other, avoiding excessive cleaning of the pole piece by the cleaning mechanism, protecting the coating on the pole piece, and improving the yield of the product.

Description of drawings

Fig. 1 is a three-dimensional structure schematic diagram of the present utility model.

Fig. 2 is a schematic diagram of an exploded structure of the utility model.

Fig. 3 is a structural schematic diagram of the cleaning mechanism of the present invention.

Fig. 4 is a structural schematic diagram of the dust accumulation and ventilation mechanism of the present invention.

Fig. 5 is a schematic diagram of the exploded structure of the first driving mechanism and the opening and closing driving mechanism of the present invention.

Fig. 6 is a structural schematic diagram of the guide part of the present invention.

Fig. 7 is a left side view of the guide part of the present invention.

Fig. 8 is a structural schematic diagram of the jump suppression mechanism and the outer casing of the present invention.

Fig. 9 is a structural schematic diagram of the second through hole, the frame and the outer casing of the present invention.

Explanation of reference signs:

1-frame; 11-second through hole; 2-cleaning mechanism; 21-gap; 22-brush cylinder; 23-rotating roller; 3-first driving mechanism; 31-driving gear; 32-first driven Gear; 33-second driven gear; 34-third driven gear; 35-first driving device; 4-opening and closing drive mechanism; 41-first opening and closing plate; 411-first roller; 42-second opening Plywood; 421-second roller; 43-top; 44-second driving device; 45-elastic device; 451-first elastic part; 452-second elastic part; 5-outer casing; 6-first through hole; 7-guiding component; 71-channel; 8-dust exhausting mechanism; 81-dust cover; 82-exhaust pipe; 83-substrate; 93-the second fixing plate; 94-the third elastic component; 95-the fourth elastic component.

Detailed ways

In order to facilitate the understanding of those skilled in the art, the utility model will be further described below in conjunction with the embodiments and accompanying drawings, and the contents mentioned in the implementation modes are not limitations of the utility model.

As shown in Figures 1 to 9, a lithium battery pole piece dust removal device provided by the utility model includes a frame 1 and two cleaning mechanisms that are rotatably arranged on the frame 1 and are used to remove dust and clean the two sides of the pole piece 2. The first driving mechanism 3 arranged on the frame 1 and used to drive the cleaning mechanism 2 to rotate, the opening and closing driving mechanism 4 arranged on the frame 1 and used to drive the two cleaning mechanisms 2 to move away from or approach each other, and the frame 1 Disassemble and connect the outer casing 5 used to cover the two cleaning mechanisms 2 and the two guide components 7 provided on the frame 1. There is a gap 21 between the two cleaning mechanisms 2 for the pole pieces to pass through, and the opening and closing drive mechanism 4 is used to control the size of the gap 21; the two guide parts 7 are respectively located on both sides of the gap 21 in the length direction, and each guide part 7 is provided with a channel 71 for the tab to pass through.

In practical application, the external stacking machine is not designed to remove dust from the pole pieces, and the coated pole pieces enter the subsequent process after lamination, which is prone to poor quality due to dust or particles on the surface of the pole pieces ;The pole piece of the lithium battery is connected to the pole lug, the pole lug does not need to be dusted, and the pole piece needs to be dusted. When the cleaning mechanism 2 touches the pole lug, it is easy to cause damage to the pole lug; there is paint attached to the pole piece, and the pole piece is usually a reel The pole piece, the roll pole piece is similar to the roll paper, the pole piece is unwound by the external motor and drives the pole piece to pass through the gap 21 between the two cleaning mechanisms 2 at a constant speed, when the external motor stops the transportation of the pole piece, When the two cleaning mechanisms 2 are constantly rotating, the cleaning mechanism 2 will over-clean the part of the pole piece located in the gap 21, and the attached coating of the pole piece will fade away, resulting in poor quality of the pole piece; During the process of the gap 21 between the two cleaning mechanisms 2, the pole piece is easy to directly contact with the cleaning mechanism 2, causing the pole piece to be damaged; in order to solve the above problem, the opening and closing drive mechanism 4 of the present application drives the gap 21 between the two cleaning mechanisms 2 to widen, which is extremely The sheet passes through the outer casing and is loaded into the gap 21 between the two cleaning mechanisms 2 from above the two cleaning mechanisms 2. During the process of loading the pole piece into the gap 21 between the two cleaning mechanisms 2, the pole piece does not contact the cleaning mechanism. 2 contact to prevent damage to the pole piece and protect the pole piece; the two guide parts are located in the gap 21 between the two cleaning mechanisms 2, and the two guide parts 7 correspond to and are respectively located on both sides of the pole piece. After the pole piece is loaded into the gap 21 between the two cleaning mechanisms 2, the position of the pole piece and the pole lug is adjusted so that the pole piece moves slowly in the channel 71 of the guide member 7, which can clean the pole piece and Prevent the tabs from being damaged by the cleaning mechanism 2 and protect the tabs; after the adjustment is completed, start the first drive mechanism 3 to make the two cleaning mechanisms 2 rotate. After the first drive mechanism 3 is started, the opening and closing drive mechanism 4 drives the two cleaning mechanisms 2 to each other close to make the cleaning mechanism 2 interfere with the pole piece and clean the pole piece; when it is necessary to stop cleaning the pole piece, the PLC controls the external motor to stop the transportation of the pole piece, and at the same time the PLC controls the opening and closing drive mechanism 4 to make the two cleaning The mechanisms 2 are far away from each other. When the cleaning mechanism 2 no longer interferes with the pole piece, the first drive mechanism 3 is closed to stop the two cleaning mechanisms 2 from rotating, so as to avoid the cleaning mechanism 2 from continuing to run when the external motor stops transporting the pole piece. The over-cleaning of the pole piece protects the paint on the pole piece and improves the yield of the product; the entire lithium battery pole piece unwinding and dust removal device operates automatically, and can control the start and stop of the first driving mechanism 3 and the two The size of the gap 21 between the cleaning mechanism 2, the cleaning mechanism 2 removes the dust or particles on the pole piece, avoids poor quality caused by dust or particles on the surface of the pole piece, and improves the yield of the product; the outer casing 5 is used for Prevent external dust or particles from entering the cleaning mechanism 2 .

The cleaning mechanism 2 of the present utility model removes the dust or particles on the pole pieces, avoiding poor quality caused by dust or particles on the surface of the pole pieces; Contact with the cleaning mechanism 2 to prevent the pole piece from being damaged and protect the pole piece; the pole piece is located in the channel 71 of the guide part, which can not only clean the pole piece, but also prevent the pole piece from being damaged by the cleaning mechanism 2; the external motor stops the pole piece While the sheet is being transported, the opening and closing drive mechanism 4 drives the two cleaning mechanisms 2 away from each other, avoiding excessive cleaning of the pole piece by the cleaning mechanism 2, protecting the coating on the pole piece, and improving the yield of the product.

In this embodiment, the cleaning mechanism 2 includes a brush cylinder 22 and a rotating roller 23 that drives the brush cylinder 22 to rotate, the brush cylinder 22 is sleeved on the rotating roller 23, and the first driving mechanism 3 drives the rotating roller 23 to rotate; There are gaps 21 for the pole pieces to pass between the two brush cylinders 22 . The brush barrel 22 is cylindrical, and the outer side of the brush barrel 22 is provided with bristles, and the bristles are evenly distributed and dense, so as to improve the dust removal effect.

In this embodiment, the first driving mechanism 3 includes a driving gear 31, a first driven gear 32 meshing with the driving gear 31, a second driven gear 33 meshing with the first driven gear 32, and a driving gear 31 meshing with the driving gear 31. The meshing third driven gear 34 and the first driving device 35 keyed to the driving gear 31 , the second driven gear 33 and the third driven gear 34 respectively drive the two rotating rollers 23 to rotate. The traditional pole piece cleaning mechanism is provided with a plurality of motors that drive the rotating roller 23 to rotate, usually one motor drives a rotating roller 23, resulting in complex structure and high cost; in order to solve the above problems, the application is directly driven by a first driving device 35 Driving gear 31, driving gear 31 drives the first driven gear 32, the second driven gear 33, the third driven gear 34, the second driven gear 33 and the third driven gear 34 drive two rotating rollers 23 to rotate respectively , the structure is simple, and the cost is reduced; preferably, the first driving device 35 can be a speed-regulating motor, which can adjust the rotational speed of the rotating roller 23 .

In this embodiment, the opening and closing drive mechanism 4 includes a first opening and closing plate 41, a second opening and closing plate 42 corresponding to the first opening and closing plate 41, a plug 43 slidably arranged on the frame 1, and a head 43 arranged on the frame 1 and used for The second driving device 44 that drives the plug 43 to move, the third driven gear 34 is rotatably arranged on the first opening and closing plate 41, the second driven gear 32 and the third driven gear 34 are both rotatably arranged on the second opening and closing plate 42, and the second driven gear 34 is rotatably arranged on the second opening and closing plate 42. One opening and closing plate 41 is provided with the first roller 411 that is rotatably arranged on the first opening and closing plate 41, and the second opening and closing plate 42 is provided with the second roller 421 that is rotatably arranged on the second opening and closing plate 42 and 42 corresponds to the first roller 411. 43 is provided with a first inclined wall 431 and a second inclined wall 432 intersecting with the first inclined wall 431, the first inclined wall 431 is in conflict with the first roller 411, the second inclined wall 432 is in conflict with the second roller 421, and the plug 43 It is used to drive the first opening and closing plate 41 and the second opening and closing plate 42 away from or close to each other. When the top 43 moves upwards, the first opening and closing plate 41 and the second opening and closing plate 42 are away from each other, and the driving gear 31 is separated from the first driven gear 32, so that the gap 21 between the two cleaning mechanisms 2 becomes larger. When the top 43 moves to When moving down, the first opening and closing plate 41 and the second opening and closing plate 42 are far away from each other, so that the gap 21 between the two cleaning mechanisms 2 becomes smaller, and the first roller 411 collides with the first inclined wall 431 and is located on the first inclined wall 431 Rolling, the second roller 421 collides with the second inclined wall 431 and rolls on the second inclined wall 432, the first roller 431 makes the friction between the plug 43 and the first opening and closing plate 41 a rolling friction, and the second roller 421 makes the plug 43 The friction with the first opening and closing plate 41 is also rolling friction, which not only reduces the wear of the plug 43, but also makes the movement of the plug 43 smoother; preferably, the second driving device 44 can be an electric cylinder.

In this embodiment, the opening and closing drive mechanism 4 further includes an elastic device 45 for driving the first opening and closing plate 41 and the second opening and closing plate 42 close to each other, and the elastic device 45 includes a first elastic member 451 and a second elastic Component 452 , the first elastic component 451 is elastically connected to the first opening and closing plate 41 , and the second elastic component is elastically connecting to the second opening and closing plate 42 . The first elastic part and the second elastic part drive the first opening and closing plate 41 and the second opening and closing plate 42 close to each other, when the top 43 moves upward, the first elastic part 451 and the second elastic part 452 are compressed, when the top 43 moves to When moving down, both the first elastic component 451 and the second elastic component 452 are stretched; preferably, both the first elastic component 451 and the second elastic component 452 can be springs.

In this embodiment, the dust removal device further includes a dust accumulation exhaust mechanism 8, and the dust accumulation exhaust mechanism 8 includes a base body 83, a dust accumulation cover 81 and a plurality of exhaust pipes 82, and the dust accumulation cover 81 is arranged above the base body 83. The dust cover 81 is arranged under the brush cylinder 22, and a plurality of exhaust pipes 82 are connected to the base 83. The dust cover 81 is used to collect and carry dust, and the exhaust pipe 82 is used to suck away the base 83 and the dust cover. Dust on 81. The traditional pole piece dust removal mechanism is usually not equipped with a device to remove dust in time, which easily leads to secondary pollution of the pole piece; in order to solve the above problems, the dust collection cover 81 of the present application collects the dust or particles brushed off by the brush cylinder 22 , the exhaust pipe 821 timely takes away the dust or particles on the dust cover 81 and the substrate 83, avoiding secondary pollution caused by dust accumulation on the pole piece, and improving reliability; preferably, the dust cover 81 can be a mesh structure .

In this embodiment, the lithium battery pole piece unwinding and dedusting device also includes a jump suppression mechanism 9 for suppressing the jump when the rotating roller 23 rotates. The jump suppression mechanism includes a fixing part 91, a first fixing plate 92, a second The fixed plate 93, the third elastic component 94 and the fourth elastic component 95, the fixed component 91 is arranged on the frame 1, and the two rotating rollers 23 are respectively rotated on the first fixed plate 92, the second fixed plate 93, the first fixed plate 92 and the second fixing plate 93 are all arranged on the fixing part 91, one end of the third elastic part 94 is fixed on the fixing part 91, and the other end is connected with the first fixing plate 92, and one end of the fourth elastic part 95 is fixed on The other end of the fixing component 91 is connected to the second fixing plate 93 . When the rotating roller 23 runs at high speed under the drive of the first driving device 35, the rotating roller 23 is prone to beating, and the brush tube 22 is unstable, causing the brush tube 22 to damage the pole piece. The third elastic member 94 and the first The four elastic parts 95 are respectively used to tighten the first fixed plate 92 and the second fixed plate 93, so that the first fixed plate 92 and the second fixed plate 93 remain stable, thereby suppressing the beating of the rotating roller 23, protecting the pole pieces, and improving reliability. Sex; Preferably, both the third elastic member 94 and the fourth elastic member 95 can be springs.

In this embodiment, the outer casing 5 is provided with a first through hole 6 for passing through the pole piece, the frame 1 is provided with a second through hole 11 corresponding to the first through hole 6, and two brushes The gap 21 between the cylinders 22 is located between the first through hole 6 and the second through hole 11, and the pole pieces pass through the first through hole 6, the gap 21 between the two brush cylinders 22, and the second through hole 11 in turn. . The external motor drives the pole piece into the inside of the outer casing 5 through the first through hole 11, and then the pole piece passes through the gap 21 between the two brush cylinders 22, and the dust on the pole piece is removed through the brush cylinder 22, and finally the pole piece is removed by the second brush cylinder 22. Two through holes 11 pass through.

All technical features in this embodiment can be freely combined according to actual needs.

The above-mentioned embodiment is a preferred implementation of the utility model. In addition, the utility model can also be realized in other ways. Any obvious replacement is within the scope of protection of the utility model without departing from the concept of the technical solution. Inside.

Claims (8)

1. A lithium battery pole piece dust removal device, characterized in that: it includes a frame, two cleaning mechanisms that are rotated on the frame and are used to remove dust and clean the two sides of the pole piece, are arranged on the frame and are used to drive the cleaning mechanism to rotate The first drive mechanism, the opening and closing drive mechanism arranged on the frame and used to drive the two cleaning mechanisms to move away from or approach each other, the outer casing that is detachably connected to the frame and used to cover the two cleaning mechanisms, and the two cleaning mechanisms arranged on the frame A guide part, a gap for the pole piece to pass is left between the two cleaning mechanisms, and the opening and closing drive mechanism is used to control the size of the gap; The two guide parts are respectively located on both sides of the gap in the length direction, and each guide part is provided with a passage for the tab to pass through. 2. A lithium battery pole piece dust removal device according to claim 1, wherein the cleaning mechanism includes a brush cylinder and a rotating roller that drives the brush cylinder to rotate, the brush cylinder is sleeved on the rotating roller, and the first A driving mechanism drives the rotating roller to rotate; there is a gap between the two brush cylinders for the pole pieces to pass through. 3. A lithium battery pole piece dust removal device according to claim 2, characterized in that: the first driving mechanism includes a driving gear, a first driven gear meshing with the driving gear, and a first driven gear meshing with the first driven gear. The second driven gear, the third driven gear meshed with the driving gear and the first driving device keyed to the driving gear, the second driven gear and the third driven gear respectively drive the two rotating rollers to rotate. 4. A lithium battery pole piece dust removal device according to claim 3, characterized in that: the opening and closing drive mechanism includes a first opening and closing plate, a second opening and closing plate corresponding to the first opening and closing plate, and a sliding arrangement on the machine. The top of the frame and the second driving device arranged on the frame and used to drive the top to move, the third driven gear is rotatably set on the first opening and closing plate, and the second driven gear and the third driven gear are both rotatably set on the second opening and closing plate. Plywood, the first opening and closing plate is provided with a first roller that is rotatably arranged on the first opening and closing plate, the second opening and closing plate is provided with a second roller that is rotatably arranged on the second opening and closing plate and corresponds to the first roller, and the top is provided with a first inclined wall and a second inclined wall intersecting with the first inclined wall, the first inclined wall interferes with the first roller, the second inclined wall interferes with the second roller, and the plug is used to drive the first opening and closing plate and the second opening and closing plate away from each other or close. 5. A lithium battery pole piece dust removal device according to claim 4, characterized in that: the opening and closing drive mechanism further includes an elastic device for driving the first opening and closing plate and the second opening and closing plate to approach each other, the The elastic device includes a first elastic component and a second elastic component, the first elastic component is elastically connected to the first opening and closing plate, and the second elastic component is elastically connecting to the second opening and closing plate. 6. A lithium battery pole piece dust removal device according to claim 2, characterized in that: the dust removal device also includes a dust accumulation ventilation mechanism, and the dust accumulation ventilation mechanism includes a base body, a dust accumulation cover, and a plurality of suction ventilation mechanisms. Pipe, the dust cover is set above the base, the dust cover is set under the brush cylinder, multiple exhaust pipes are connected to the base, the dust cover is used to collect and carry dust, and the exhaust pipe is used to suck away the base and dust Dust on the hood. 7. A lithium battery pole piece dust removal device according to claim 2, characterized in that: the dust removal device also includes a jump suppression mechanism for suppressing the jump when the rotating roller rotates, and the jump suppression mechanism includes a fixed component, The first fixed plate, the second fixed plate, the third elastic component and the fourth elastic component, the fixed component is arranged on the frame, and the two rotating rollers are respectively rotated on the first fixed plate, the second fixed plate, the first fixed plate and the fourth elastic component. The second fixing plates are all arranged on the fixing part, one end of the third elastic part is fixed on the fixing part, and the other end is connected with the first fixing plate, one end of the fourth elastic part is fixed on the fixing part, and the other end is connected to the second Fixed plate connection. 8. A lithium battery pole piece dust removal device according to claim 2, characterized in that: the outer casing is provided with a first through hole for the pole piece to pass through, and the frame is provided with the first through hole Corresponding to the second through hole, the gap between the two brush cylinders is located between the first through hole and the second through hole, and the pole piece passes through the first through hole, the gap between the two brush cylinders, the second through hole in turn Two through holes.