阅读说明：本技术 一种电池极片涂布装置 (Battery pole piece coating device ) 是由 李穷 李涛 于 2021-08-27 设计创作，主要内容包括：本发明公开了一种电池极片涂布装置,包括依次设置的放料辊、两个收紧辊、收卷辊,两个收紧辊之间设有涂布机构,涂布机构包括放有浆料的涂布箱,涂布箱上安装有涂布辊,涂布辊下部浸入浆料中,涂布辊上部伸出涂布箱,涂布箱上端且位于涂布辊两侧分别固定有安装架,安装架上分别安装有刮料辊,收紧辊与收卷辊之间设有干燥箱,干燥箱两端分别设有进料口和出料口,靠近收卷辊的收紧辊设置在干燥箱内的进料口处,干燥箱内出料口处安装有牵引辊,干燥箱内设有加热机构。该电池极片涂布装置可以实现均匀涂布,且可及时对涂布之后的极片进行干燥。(The invention discloses a battery pole piece coating device which comprises an emptying roller, two tightening rollers and a winding roller which are sequentially arranged, wherein a coating mechanism is arranged between the two tightening rollers, the coating mechanism comprises a coating box for accommodating slurry, the coating box is provided with a coating roller, the lower part of the coating roller is immersed in the slurry, the upper part of the coating roller extends out of the coating box, mounting frames are respectively fixed at the upper end of the coating box and positioned at two sides of the coating roller, the mounting frames are respectively provided with a scraping roller, a drying box is arranged between the tightening roller and the winding roller, two ends of the drying box are respectively provided with a feeding port and a discharging port, the tightening roller close to the winding roller is arranged at the feeding port in the drying box, the discharging port in the drying box is provided with a traction roller, and a heating mechanism is arranged in the drying box. The battery pole piece coating device can realize uniform coating and can dry the coated pole piece in time.)

1. The utility model provides a battery pole piece coating unit which characterized in that: including the blowing roller, two receipts pinch rolls, the wind-up roll that set gradually, be equipped with coating mechanism between two receipts pinch rolls, coating mechanism is including the coating case of putting the thick liquids, install the coating roll on the coating case, the coating roll lower part is soaked in the thick liquids, the coating case is stretched out on coating roll upper portion, coating case upper end just is located the coating roll both sides and is fixed with the mounting bracket respectively, install respectively on the mounting bracket and scrape the material roller, be equipped with the drying cabinet between receipts pinch roll and the wind-up roll, the drying cabinet both ends are equipped with feed inlet and discharge gate respectively, are close to the wind-up roll set up the feed inlet department in the drying cabinet, discharge gate department installs the carry over pinch roll in the drying cabinet, be equipped with heating mechanism in the drying cabinet.

2. The battery pole piece coating device of claim 1, wherein: the coating incasement symmetry is equipped with the baffle, the baffle lower extreme symmetry is fixed with the support column, the support column is fixed in the coating incasement bottom, the baffle lower extreme just is located and is fixed with the baffle between two support columns.

3. The battery pole piece coating device of claim 2, wherein: be equipped with the spout in the baffle, install the slide in the spout, the baffle is stretched out to the slide lower extreme, the slide upper end is equipped with the recess, the slide is made by the material that density is less than thick liquids, the baffle upper end symmetry is fixed with the mounting panel, install the rotary drum between the mounting panel, the rotary drum both ends pass through the bearing with the mounting panel respectively and are connected, reverse winding has stay cord one and stay cord two on the rotary drum, the one end of stay cord one and stay cord two is fixed with the rotary drum outer wall respectively, the other end of stay cord one and stay cord two passes baffle and baffle respectively and stretches to in the spout fixed with the counter weight ball.

4. The battery pole piece coating device of claim 3, wherein: the fixed cover in rotary drum middle part is equipped with the riser.

5. The battery pole piece coating device of claim 4, wherein: the rotary drum is driven by a motor to rotate.

6. The battery pole piece coating device of claim 4, wherein: the baffle lower extreme is equipped with the draw-in groove, the draw-in groove width is greater than the diameter of counter weight ball, the draw-in groove communicates with the spout.

7. The battery pole piece coating device of claim 1, wherein: heating mechanism includes the removal seat of setting in the drying cabinet more than two, the bottom is fixed with the slide rail in the drying cabinet, it installs on the slide rail to remove the seat, slide rail one side is fixed with the curb plate, the curb plate passes through the bearing with the one end of lead screw and is connected, the lead screw other end passes the output shaft of drying cabinet and motor two fixed, the lead screw passes to remove the seat and passes through threaded connection with removing the seat, it is fixed with the hot plate to remove seat upper end, the hot plate sets up between tightening roller and carry over pinch rolls.

8. The coating device for the battery pole piece, according to claim 7, is characterized in that: a heat conducting plate is fixed above the movable seat, and the heat conducting plate, the side plate and the box body enclose a heating chamber.

9. The battery pole piece coating device of claim 8, wherein: a supporting rod is fixed at the upper end of the moving seat, a supporting plate is fixed at the upper end of the supporting rod, the lower end of the supporting plate is fixed with the upper end of the third pull rope, and the lower end of the third pull rope is fixed with the arc-shaped plate.

Technical Field

The invention relates to a pole piece production device, in particular to a battery pole piece coating device.

Background

In the battery manufacturing process, coating is a core process and is also a main process step for determining the battery performance. In order to ensure the coating accuracy and consistency, a coater with high price and large volume is needed to coat the anode and the cathode of the lithium ion battery. A coating roller in the existing coating device generally absorbs coating in a slurry tank and then directly coats a pole piece substrate, and a large amount of slurry is dipped on the coating roller, so that the coating cannot be uniformly coated during coating, and the slurry can drop in a large amount, thereby causing the waste of the slurry. Secondly, drying is needed in time after coating, and slurry of the pole piece is prevented from being scraped in the transmission process.

Disclosure of Invention

The invention aims to provide a battery pole piece coating device which can realize uniform coating and can dry a coated pole piece in time.

In order to achieve the purpose, the invention provides the following technical scheme:

the utility model provides a battery pole piece coating device, is including the blowing roller, two tightening rollers, the wind-up roll that set gradually, be equipped with coating mechanism between two tightening rollers, coating mechanism is including the coating case of putting the thick liquids, install the coating roll on the coating case, the coating roll lower part is soaked in the thick liquids, the coating case is stretched out on coating roll upper portion, coating case upper end just is located the coating roll both sides and is fixed with the mounting bracket respectively, install respectively on the mounting bracket and scrape the material roller, be equipped with the drying cabinet between tightening roller and the wind-up roll, the drying cabinet both ends are equipped with feed inlet and discharge gate respectively, are close to the wind-up roll tighten up the feed inlet department of roller setting in the drying cabinet, the carry over pinch rolls is installed to discharge gate department in the drying cabinet, be equipped with heating mechanism in the drying cabinet.

Preferably, the coating incasement symmetry is equipped with the baffle, the baffle lower extreme symmetry is fixed with the support column, the support column is fixed in the coating incasement bottom, the baffle lower extreme just is located and is fixed with the baffle between two support columns.

Preferably, be equipped with the spout in the baffle, install the slide in the spout, the baffle is stretched out to the slide lower extreme, the slide upper end is equipped with the recess, the slide is made by the material that density is less than thick liquids, the baffle upper end symmetry is fixed with the mounting panel, install the rotary drum between the mounting panel, the rotary drum both ends pass through the bearing with the mounting panel respectively and are connected, reverse winding has stay cord one and stay cord two on the rotary drum, the one end of stay cord one and stay cord two is fixed with the rotary drum outer wall respectively, the other end of stay cord one and stay cord two passes baffle and baffle respectively and stretches to in the spout fixed with the counter weight ball.

Preferably, the middle part of the rotary drum is fixedly sleeved with a vertical plate.

Preferably, the drum is driven to rotate by a motor.

Preferably, the lower end of the partition plate is provided with a clamping groove, the width of the clamping groove is larger than the diameter of the counterweight ball, and the clamping groove is communicated with the sliding groove.

Preferably, heating mechanism includes the removal seat of setting in the drying cabinet more than two, the bottom is fixed with the slide rail in the drying cabinet, it installs on the slide rail to remove the seat, slide rail one side is fixed with the curb plate, the curb plate passes through the bearing with the one end of lead screw and is connected, the lead screw other end passes the output shaft of drying cabinet and motor two fixed, the lead screw passes to remove the seat and passes through threaded connection with removing the seat, it is fixed with the hot plate to remove the seat upper end, the hot plate sets up between take-up roller and carry over pinch rolls.

Preferably, a heat conducting plate is fixed above the moving seat, and the heat conducting plate, the side plate and the box body enclose a heating chamber.

Preferably, a supporting rod is fixed at the upper end of the moving seat, a supporting plate is fixed at the upper end of the supporting rod, the lower end of the supporting plate is fixed with the upper end of the third pulling rope, and the lower end of the third pulling rope is fixed with the arc-shaped plate.

Compared with the prior art, the invention has the beneficial effects that:

1) according to the invention, the scraping roller is arranged, so that redundant slurry on the coating roller can be scraped, and the thickness of the slurry dipped on the coating roller is consistent, so that the pole piece is uniformly coated;

2) when slurry scraped by the scraping roller falls into the coating box, the liquid level of the slurry splashes or ripples under the action of gravity, and the splashed slurry and the ripples appear pits or cavities after the slurry is dipped into the coating roller, so that the coating quality is influenced.

3) The heating mechanism is arranged, so that the coated pole piece can be dried in time, and the pole piece can be dried by using the heat emitted by the radiating fin, so that the effect of uniform drying can be achieved.

Drawings

FIG. 1 is a schematic structural diagram of a battery pole piece coating apparatus according to an embodiment of the present invention;

FIG. 2 is a schematic view of the interior of the coating booth in the embodiment of the present invention

FIG. 3 is a schematic view of a structure at a separator in an embodiment of the present invention;

FIG. 4 is a top view at the drum in an embodiment of the present invention;

FIG. 5 is a schematic view of the structure inside the drying box in the embodiment of the present invention;

FIG. 6 is an enlarged view at A in FIG. 5;

in the figure, 1, a feeding roller, 2, a tightening roller, 3, a winding roller, 4, a coating box, 5, a coating roller, 6, a mounting rack, 7, a scraping roller, 8, a partition board, 9, a support column, 10, a baffle, 11, a chute, 12, a sliding plate, 13, a groove, 14, a mounting plate, 15, a rotating cylinder, 16, a vertical plate, 17, a second pull rope, 18, a first pull rope, 19, a clamping groove, 20, a drying box, 21, a feed inlet, 22, a discharge outlet, 23, a traction roller, 24, a movable seat, 25, a sliding rail, 26, a side plate, 27, a heat conducting plate, 28, a heating chamber, 29, a screw rod, 30, a second motor, 31, a heating plate, 32, a support rod, 33, a support plate, 34, a third pull rope, 35, an arc-shaped plate, 36 and a counterweight ball.

Detailed Description

The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.

Referring to fig. 1-6, a coating apparatus for battery electrode plate includes an emptying roller 1, two tightening rollers 2, and a winding roller 3. A coating mechanism is arranged between the two tightening rollers 2 and comprises a coating box 4 containing slurry. The coating box 4 is provided with a coating roller 5, the lower part of the coating roller 5 is immersed in the slurry, and the upper part of the coating roller 5 extends out of the coating box 4. The upper end of the coating box 4 and the two sides of the coating roller 5 are respectively fixed with a mounting rack 6, and the mounting racks 6 are respectively provided with a scraping roller 7. The coating box 4 is internally and symmetrically provided with a baffle plate 8, namely the baffle plate 8 is arranged between the highest point of slurry dipping of the coating roll 5 and the end face of the side of the coating roll 5, the lower end of the baffle plate 8 is symmetrically fixed with support columns 9, and the support columns 9 are fixed at the bottom end in the coating box 4. A baffle plate 10 is fixed at the lower end of the clapboard 8 and positioned between the two supporting columns 9. Be equipped with spout 11 in the baffle 10, install slide 12 in the spout 11, the baffle 10 is stretched out to slide 12 lower extreme, and slide 12 both ends are fixed with the limiting plate, and the limiting plate can prevent that slide 12 from breaking away from spout 11 completely. The upper end of the sliding plate 12 is provided with a groove 13, and the sliding plate 12 is made of a material with density smaller than that of the slurry, so that the sliding plate 12 can float on the upper end of the slurry. The 8 upper end symmetries of baffle are fixed with mounting panel 14, install rotary drum 15 between the mounting panel 14, and the fixed cover in 15 middle parts of rotary drum is equipped with riser 16, and 15 both ends of rotary drum pass through the bearing with mounting panel 14 respectively and are connected, and rotary drum 15 is driven by motor one and is rotated, and rotary drum 15 also can be driven by bull stick and handle and rotate. A baffle may be provided outside the bowl 15 to prevent slurry from splashing onto the bowl 15. The first pull rope 18 and the second pull rope 17 are wound on the rotary drum 15 in the opposite direction, the first pull rope 18 and the second pull rope 17 are respectively arranged on two sides of the vertical plate 16, one ends of the first pull rope 18 and the second pull rope 17 are respectively fixed with the outer wall of the rotary drum 15, and the other ends of the first pull rope 18 and the second pull rope 17 respectively penetrate through the partition plate 8 and the baffle plate 10 to extend into the sliding groove 11 to be fixed with the counterweight ball 36. The lower end of the clapboard 8 is provided with a clamping groove 19, the width of the clamping groove 19 is larger than the diameter of the counterweight ball 36, and the clamping groove 19 is communicated with the sliding groove 11.

A drying box 20 is arranged between the tightening roller 2 and the winding roller 3, a feeding hole 21 and a discharging hole 22 are respectively arranged at two ends of the drying box 20, the tightening roller 2 close to the winding roller 3 is arranged at the feeding hole 21 in the drying box 20, a traction roller 23 is arranged at the discharging hole 22 in the drying box 20, and a heating mechanism is arranged in the drying box 20.

The heating mechanism comprises more than two moving seats 24 arranged in the drying box 20, slide rails 25 are fixed at the bottom in the drying box 20, and the moving seats 24 are arranged on the slide rails 25. A side plate 26 is fixed on one side of the slide rail 25, a heat conducting plate 27 is fixed above the movable seat 24, the heat conducting plate 27 is fixed with the inner wall of the drying box 20, and the heat conducting plate 27, the side plate 26 and the box body enclose a heating chamber 28. The side plate 26 is connected with one end of a screw rod 29 through a bearing, the other end of the screw rod 29 penetrates through the drying box 20 and is fixed with an output shaft of a second motor 30, and the screw rod 29 penetrates through the moving seat 24 and is connected with the moving seat 24 through threads. A heating plate 31 is fixed on the upper end of the movable seat 24, and the heating plate 31 is arranged between the tightening roller 2 and the traction roller 23. A support rod 32 is fixed at the upper end of the movable seat 24, a support plate 33 is fixed at the upper end of the support rod 32, the lower end of the support plate 33 is fixed with the upper end of a third pull rope 34, and the lower end of the third pull rope 34 is fixed with an arc-shaped plate 35.

The working principle is as follows: the pole piece sequentially passes through the discharging roller 1, one of the tightening rollers 2, the coating roller 5, the feeding hole 21, the other tightening roller 2, the traction roller 23 and the discharging hole 22 and then is wound by the winding roller 3. When the pole piece passes through the coating mechanism, the coating roller 5 rotates ceaselessly, after the coating roller 5 dips in the slurry in the coating box 4, the scraper roller 7 scrapes off the redundant slurry on the coating roller 5, and then the coating roller 5 coats the pole piece. The coating box 4 is divided into three areas by the partition plates 8, namely, the middle area is a coating roller 5 dipping area, the two sides are slurry falling areas, the slurry is scraped by the scraping rollers 7 and falls into the slurry falling area in the coating box 4, the splashed slurry is blocked by the partition plates 8, the splashed slurry is prevented from directly splashing on the coating roller 5, and a pit is avoided in the slurry on the coating roller 5; the ripples of the falling slurry splashing are blocked by the baffle 10, so that the slurry on the coating roller 5 can be prevented from generating cavities. In the coating process, when thick liquids liquid level reduces gradually, motor drive rotary drum 15 rotates, makes rotary drum 15 loosen stay cord 18 and stay cord two 17, makes in counter weight ball 36 gets into recess 13 from draw-in groove 19, and under the effect of counter weight ball 36 gravity, slide 12 moves down along spout 11, makes slide 12 stretch out baffle 10 more to better playing the separation effect. After slurry is added into the coating box 4, the liquid level of the slurry is restored to the original height again, the motor I rotates reversely, the first pull rope 18 and the second pull rope 17 return to the clamping groove 19, and the sliding plate 12 moves upwards along the sliding groove 11 under the action of buoyancy to restore the original position.

When the pole piece enters the drying box 20, the second motor 30 drives the screw rod 29 to rotate, the screw rod 29 drives the moving seat 24 to perform repeated reciprocating motion along the slide rail 25, the heating plate 31 uniformly heats the radiating fins, and in the moving process of the moving seat 24, the arc-shaped plate 35 swings back and forth under the action of inertia, so that hot air in the heating chamber 28 circularly flows, the heat of the heat-conducting plate 27 is utilized to uniformly heat the pole piece, and cracks are prevented from appearing due to overhigh local temperature of the pole piece.

The foregoing is merely exemplary and illustrative of the present invention and various modifications, additions and substitutions may be made by those skilled in the art to the specific embodiments described without departing from the scope of the present invention as defined in the accompanying claims.