CN217615831U

CN217615831U - Coating oven structure

Info

Publication number: CN217615831U
Application number: CN202221401331.2U
Authority: CN
Inventors: 矫贺东; 付强; 张恒
Original assignee: Chuneng New Energy Co Ltd
Current assignee: Chuneng New Energy Co Ltd
Priority date: 2022-06-06
Filing date: 2022-06-06
Publication date: 2022-10-21
Anticipated expiration: 2032-06-06

Abstract

The utility model discloses a coating oven structure, the power distribution box comprises a box body, the inner chamber top of box is provided with the plenum, the bottom of plenum is provided with a plurality of tuyeres side by side, the inner chamber bottom of box is provided with the plenum down, the top of plenum down is provided with a plurality of tuyeres side by side, be equipped with the clearance that supplies the coating pole piece to pass between tuyeres and the tuyeres down, it is provided with an air current guide structure respectively to correspond the high department between tuyeres and the tuyeres on the both sides wall of box, the air current guide structure is used for changing the air current flow direction that blows off into the direction that makes progress between tuyeres and the tuyeres down, be provided with the air exit on the roof of box. The upper air nozzle and the lower air nozzle are blown to hot air on the coating pole piece through the air flow guide structure, the hot air flows upwards from the two sides of the coating pole piece in a guide mode, and finally the hot air is discharged through the air outlets on the corresponding sides, so that air flow in the drying oven is smooth, the phenomenon of air blowing in two sides of the coating pole piece is avoided, and the drying quality is greatly improved.

Description

Coating oven structure

Technical Field

The utility model relates to a pole piece coating technical field, concretely relates to coating oven structure.

Background

In the production process of the lithium battery, slurry needs to be coated on a current collector, then drying is carried out through an oven, a solvent in a coating is removed, and then the coating is rolled to enter the next procedure. Current oven is mostly established the main air inlet at the oven side, and through last under the plenum, the tuyere blows on the pole piece, it establishes on the oven roof to air exhaust, and this kind of project organization can cause the inside wind current of oven to flow unsmoothly, at the easy nest wind of coating pole piece left and right sides, forms the microcirculation, causes the stoving many times to both sides pole piece edge, leads to pole piece edge fracture, and the foil coil, still can cause the broken tape when serious, leads to the fact the influence to processing procedure qualification rate, productivity.

Disclosure of Invention

The to-be-solved technical problem of the utility model is to provide a coating oven structure makes the hot-blast smooth and easy that flows in the oven, avoids appearing nest wind phenomenon at the both sides edge of coating pole piece, effectively improves coating pole piece drying quality.

In order to solve the technical problem, the utility model discloses a coating oven structure, the power distribution box comprises a box body, the inner chamber top of box is provided with the plenum, the bottom of plenum is provided with a plurality of tuyeres side by side, the vertical downstream of tuyeres, the inner chamber bottom of box is provided with the lower plenum, the top of plenum is provided with a plurality of tuyeres side by side, the vertical upstream of tuyeres down, go up the tuyeres with the tuyeres is one-to-one just to setting up down, go up the tuyeres with be equipped with the clearance that supplies the coating pole piece to pass down between the tuyeres, correspond on the both sides wall of box go up the tuyeres with the high department between the tuyeres is provided with an air current guide structure respectively down, air current guide structure is used for following go up the tuyeres with the air current flow direction that blows out between the tuyeres down changes into the direction of making progress, be provided with the mouth on the roof of exhaust box.

In above-mentioned coating oven structure, blow the hot-blast on the coating pole piece with last tuyere and lower tuyere through the air current guide structure, upwards flow from the both sides guide of coating pole piece, finally discharge through the air exit, make the air current flow smooth and easy in the oven, avoid appearing the nest wind phenomenon in the both sides of coating pole piece to effectively avoid coating pole piece both sides because the overbaking leads to the bad phenomenon of edge fracture, foil curl up, improve drying quality greatly.

As the utility model discloses the improvement of coating oven structure, the air current guide structure include just right go up the tuyere with the arcwall face that the clearance set up between the lower tuyere. Preferably, the arc corresponding to the arc-shaped surface is a quarter arc.

Through go up the tuyere with clearance department is just to setting up the arcwall face that has the quarter circular arc between the tuyere down, and the bottom of arcwall face is not higher than the air outlet height of tuyere down, and the top of arcwall face is not less than the air outlet height of last tuyere to make the hot-blast circulation that blows off in the follow clearance change into ascending air current, avoid litter wind, avoid forming hot-blast microcirculation.

Furthermore, the airflow guiding structure also comprises a block main body, and a top edge of one side of the block main body, which is close to the upper air nozzle, is subjected to an inward concave round chamfer to form the arc-shaped surface. The arc-shaped surface is formed by making the inward-concave round chamfer on the top corner on one side of the top of the block-shaped main body, the processing is simple, the manufacturing is easy, and the length of the round chamfer is not less than the thickness of the gap between the upper air nozzle and the lower air nozzle.

Preferably, gaps are reserved between the two sides of the upper air nozzle and the corresponding inner side wall of the box body, so that an air path is kept smooth between the air flow guide structure and the air outlet, and the air flow path in the box body is further ensured to be smooth.

As another improvement of the coating oven structure of the present invention, the upper tuyere and the lower tuyere have the same width at the air outlet. Preferably, the width of the air outlet of the upper air nozzle is the same as the width of the coating pole piece.

After the upper air nozzle and the lower air nozzle blow hot air on the coating pole piece, because the widths of the upper air nozzle and the lower air nozzle are the same, the hot air uniformly acts on the coating pole piece for the same time, the drying consistency of the coating pole piece is improved, and the coating of the thin foil is particularly greatly facilitated, wherein the thin foil generally refers to a foil with the thickness of 4.5 micrometers.

As a further improvement of the coating oven structure, an upper air inlet and a lower air inlet are provided on a side wall of the box body, the upper air inlet is communicated with the upper pressure chamber through a pipeline, and the lower air inlet is communicated with the lower pressure chamber through a pipeline.

Further, the upper air inlet continuously introduces hot air into the upper pressure chamber. Likewise, the lower air inlet continuously introduces hot air into the lower pressure chamber.

As the utility model discloses a coating oven structure's improvement still, the air exit is total three, sets up respectively the both ends and the middle part of box roof. The air exhaust speed is accelerated by the air exhaust ports, the air flow rate is improved, and the air flow in the box body is smooth.

In conclusion, by adopting the coating oven structure, the phenomenon of over-drying of the two sides of the pole piece can not occur, the drying qualification rate of the coated pole piece is improved, the process loss is reduced, the cost is saved, the coated pole piece is dried uniformly, and the quality of the thin foil coated pole piece is improved greatly.

Drawings

In the drawings:

fig. 1 is an overall structure diagram of the present invention.

Fig. 2 is a cross-sectional view taken along the X-direction in fig. 1.

Fig. 3 is a cross-sectional view taken along the Y-direction of fig. 1.

Fig. 4 is a structural view of the airflow guiding structure of the present invention.

In the figure, 1, a box body; 2. an upper pressure chamber; 3. an upper tuyere; 4. a lower pressure chamber; 5. a lower tuyere; 6. coating a pole piece; 7. an airflow directing structure; 8. an air outlet; 9. an arc-shaped surface; 10. a block-shaped main body; 11. an upper inlet; 12. and a lower air inlet.

Detailed Description

The following describes the present invention with reference to the accompanying drawings. It should be noted that the description of the embodiments is provided to help understanding of the present invention, but the present invention is not limited thereto.

Fig. 1-4 show a coating oven structure of the present invention. As shown in fig. 1-3, the air-conditioning device comprises a box body 1, an upper pressure chamber 2 is arranged at the top of an inner cavity of the box body 1, a plurality of upper air nozzles 3 are arranged at the bottom of the upper pressure chamber 2 side by side, the upper air nozzles 3 blow air vertically downwards, a lower pressure chamber 4 is arranged at the bottom of the inner cavity of the box body 1, a plurality of lower air nozzles 5 are arranged at the top of the lower pressure chamber 4 side by side, the lower air nozzles 5 blow air vertically upwards, the upper air nozzles 3 and the lower air nozzles 5 are arranged opposite to each other, a gap for a coating pole piece 6 to pass through is arranged between the upper air nozzles 3 and the lower air nozzles 5, air flow guide structures 7 are respectively arranged on two side walls of the box body 1 corresponding to the height positions between the upper air nozzles 3 and the lower air nozzles 5, the air flow direction between the upper air nozzles 3 and the lower air nozzles 5 is changed into the upward direction by the air flow guide structures 7, and an exhaust port 8 is arranged on a top plate of the box body 1.

As shown in fig. 4, the air flow guide structure 7 includes an arc-shaped surface 9 disposed to face the gap between the upper tuyere 3 and the lower tuyere 5. Optionally, the arc corresponding to the arc-shaped surface 9 is a quarter of a circular arc. The air flow guiding structure 7 further comprises a block-shaped main body 10, and the top edge of one side of the block-shaped main body 10, which is close to the upper air nozzle 3, is subjected to inward concave round chamfering to form an arc-shaped surface 9.

An inward-concave round chamfer is formed on the top corner of one side of the top of the block-shaped main body 10 to form an arc-shaped surface 9, and the processing is simple and the manufacture is easy. The arc that this round chamfer corresponds is the quarter circular arc, consequently, the radius of requiring round chamfer is not less than the thickness in clearance between last tuyere 3 and the lower tuyere 5, make arcwall face 9 can just be to the air outlet in 6 both sides of coating pole piece, the bottom of arcwall face 9 is not higher than the air outlet height of lower tuyere 5, the top of arcwall face 9 is not less than the air outlet height of last tuyere 3, thereby make the hot-blast circulation that blows off in the clearance become ascending air current, avoid litter wind, avoid forming hot-blast microcirculation.

As shown in fig. 3, the outlet widths of the upper and lower nozzles 3 and 5 are the same. The width of the air outlet of the upper air nozzle 3 is the same as that of the coating pole piece 6.

After the upper air nozzle 3 and the lower air nozzle 5 blow hot air on the coating pole piece 6, because the widths of the upper air nozzle and the lower air nozzle are the same, the hot air uniformly acts on the coating pole piece 6 for the same time, so that the drying consistency of the coating pole piece 6 is improved, and the coating of a thin foil material, which generally refers to a 4.5-micrometer foil material, is greatly facilitated.

Optionally, the coating pole piece 6 passes through the center of the box 1, and the upper air nozzle 3 and the lower air nozzle 5 are symmetrically arranged on the upper side and the lower side of the coating pole piece 6. The internal structure design of the whole box body 1 is symmetrical, the arrangement is reasonable, and the airflow flows smoothly.

As shown in fig. 3, a side wall of the box 1 is provided with an upper air inlet 11 and a lower air inlet 12, the upper air inlet 11 is communicated with the upper pressure chamber 2 through a pipeline, and the lower air inlet 12 is communicated with the lower pressure chamber 4 through a pipeline. The upper air inlet 11 continuously introduces hot air into the upper pressure chamber 2, and the lower air inlet 12 continuously introduces hot air into the lower pressure chamber 4. Hot air is continuously introduced from the outside of the box body 1 through a blower and respectively blown to the upper surface and the lower surface of the coating pole piece 6, and the coating on the pole piece is dried.

As shown in fig. 1, three exhaust outlets 8 are provided at both ends and the middle of the top plate of the cabinet 1. The air outlets 8 accelerate the air exhaust speed, improve the air flow rate and enable the air flow in the box body 1 to flow smoothly.

When the coating machine is used, hot air is blown into the upper air inlet 11 and the lower air inlet 12 simultaneously through an air supply device such as a blower, the hot air flowing into the upper air inlet 11 is blown to the upper surface of the coating pole piece 6 through the upper pressure chamber 2 and the upper air nozzle 3, the hot air flowing into the lower air inlet 12 is blown to the lower surface of the coating pole piece 6 through the lower pressure chamber 4 and the lower air nozzle 5, and the coating pole piece 6 is dried; most of hot air flow blown to the upper surface and the lower surface of the coating pole piece 6 flows out to two sides, is blown to the bottom of the arc-shaped surface 9, flows upwards along the gradually changing direction of the arc-shaped surface 9, finally flows out of the box body 1 through the air outlet 8, flows out of hot air of the box body 1, and can enter the circulating system, and returns to the box body again to dry the coating gasket 6 after treatment, and the other part is thoroughly discharged to the outside of the box body 1. The whole hot air flow flows smoothly in the box body 1, air can not be trapped at two sides of the coating pole piece 6, the phenomenon of over-drying of two sides of the pole piece can not occur, and the drying quality of the coating pole piece 6 is improved.

Finally, it should be noted that: the above embodiments are only used for illustrating the technical solutions of the present invention and not for limiting the protection scope thereof, and although the present invention is described in detail with reference to the above embodiments, those of ordinary skill in the art should understand that: various changes, modifications and equivalents may occur to those skilled in the art upon reading the disclosure, which fall within the scope of the appended claims.

Claims

1. The utility model provides a coating oven structure, its characterized in that, includes box (1), the inner chamber top of box (1) is provided with plenum (2), the bottom of plenum (2) is provided with a plurality of air nozzles (3) side by side, air nozzles (3) are vertical to blow down, the inner chamber bottom of box (1) is provided with plenum (4) down, the top of plenum (4) is provided with a plurality of air nozzles (5) down side by side, air nozzles (5) are vertical to blow up down, air nozzles (3) with air nozzles (5) are just to setting up one by one down, air nozzles (3) with be equipped with the clearance that supplies coating pole piece (6) to pass down between air nozzles (5), correspond on the both sides wall of box (1) air nozzles (3) with the high department between air nozzles (5) down is provided with an air current guide structure (7) respectively, air current guide structure (7) are used for will follow air nozzles (3) with the air current that blows out between air nozzles (5) down changes into the direction, the roof flow direction is upwards to be provided with exhaust opening (8) on the box (1).

2. A coating oven construction according to claim 1, characterized in that the air flow guiding construction (7) comprises an arc-shaped surface (9) arranged opposite the gap between the upper tuyere (3) and the lower tuyere (5).

3. A coating oven construction according to claim 2, characterized in that the arc to which the arc-shaped face (9) corresponds is a quarter of a circular arc.

4. A coating oven structure according to claim 2, characterized in that the air flow guiding structure (7) further comprises a block-shaped body (10), and the top edge of one side of the block-shaped body (10) close to the upper tuyere (3) is chamfered inwards to form the arc-shaped surface (9).

5. A coating oven structure according to claim 1, characterized in that the outlet widths of the upper tuyere (3) and the lower tuyere (5) are the same.

6. A coating oven structure according to claim 5, characterized in that the outlet width of the upper tuyere (3) is the same as the width of the coating pole piece (6).

7. A coating oven structure according to claim 1, characterized in that a side wall of the box (1) is provided with an upper inlet (11) and a lower inlet (12), the upper inlet (11) is in pipe communication with the upper pressure chamber (2), and the lower inlet (12) is in pipe communication with the lower pressure chamber (4).

8. A coating oven structure according to claim 7, characterized in that the upper inlet (11) continuously introduces hot air into the upper plenum (2).

9. A coating oven structure according to claim 1, characterized in that the coating pole piece (6) passes through the box (1) at the central height, and the upper tuyere (3) and the lower tuyere (5) are symmetrically arranged on the upper and lower sides of the coating pole piece (6).

10. A coating oven structure according to claim 1, characterized in that the exhaust vents (8) are three in number and are arranged at the two ends and in the middle of the top plate of the box (1), respectively.