CN216910902U

CN216910902U - Tuyere device and coating oven

Info

Publication number: CN216910902U
Application number: CN202123189648.2U
Authority: CN
Inventors: 赖万聪; 徐锋; 许永顺; 邓昊昆
Original assignee: Huizhou Yiwei Energy Collection Co ltd
Current assignee: Huizhou Yiwei Energy Collection Co ltd
Priority date: 2021-12-17
Filing date: 2021-12-17
Publication date: 2022-07-08
Anticipated expiration: 2031-12-17

Abstract

The utility model discloses an air nozzle device which comprises an air nozzle body, wherein a guide plate is arranged at the top end of the air nozzle body, first pressure relief holes are formed in the guide plate, a plurality of rows of first pressure relief holes are distributed on two sides of the transverse axis of the guide plate, second pressure relief holes are further formed in the guide plate, a plurality of second pressure relief holes are formed in the upper side and the lower side of each first pressure relief hole and are axially symmetrically distributed along the axis of the guide plate, the length of a graph formed by the second pressure relief holes in the transverse axis direction of the guide plate is smaller than that of each row of first pressure relief holes, and the length of the graph formed by the second pressure relief holes in the longitudinal axis direction of the guide plate is larger than that of the plurality of rows of first pressure relief holes. The utility model effectively improves the stress uniformity of the two sides of the pole piece, reduces the probability of the pole piece bending and the cracking of the two sides of the pole piece caused by uneven stress, further improves the quality of terminal products and reduces the production cost.

Description

Tuyere device and coating oven

Technical Field

The utility model relates to the field of lithium ion batteries, in particular to a tuyere device and a coating oven.

Background

Coating and drying of the pole piece is an important process in the electrode coating processing. At present, the coating oven of mainstream is floated oven on the market, for traditional roller drive formula oven, floated oven can provide high-efficient, even coating drying for lithium cell manufacture factory. In the pole piece coating and drying process, the uniform distribution of the air volume influences the surface quality of the pole piece, and the quality of the surface of the pole piece directly influences the performance of the battery, namely the uniformity of the air volume influences the performance of the battery in the coating and drying process.

In a suspension type oven, an air nozzle is a mechanism which directly influences the uniformity of air quantity. Common tuyere mostly adopts the air-out design in slit type air outlet and baffle axis department evenly distributed pressure release hole on the market, however, in the in-service use process, because the amount of wind of slit type air outlet, pressure is too big and lead to the pole piece to appear crooked because of the atress inequality in the drying process, the phenomenon of fracture, the serious position of fracture can take place to expose the paper tinsel phenomenon, lead to the pole piece to scrap, and the position of slight fracture can appear the impression after the roll-in, influence product quality, and then lead to the manufacturing cost increase of enterprise.

SUMMERY OF THE UTILITY MODEL

Aiming at the technical problems in the prior art, the utility model provides the air nozzle device which is optimized on the basis of the traditional air nozzle device, can effectively improve the air quantity and pressure distribution at two ends of an oven, and reduces the phenomena of bending of a pole piece caused by overlarge air quantity and pressure at two sides and cracking of two sides of the pole piece caused by uneven stress.

On one hand, the utility model provides an air nozzle device which comprises an air nozzle body, wherein a guide plate is arranged at the top end of the air nozzle body, first pressure relief holes are formed in the guide plate, a plurality of rows of the first pressure relief holes are distributed on two sides of the transverse axis of the guide plate, second pressure relief holes are further formed in the guide plate, a plurality of second pressure relief holes are formed in the upper side and the lower side of the first pressure relief holes and are distributed in an axial symmetry mode along the axis of the guide plate, the length of a graph formed by the second pressure relief holes in the transverse axis direction of the guide plate is smaller than that of each row of the first pressure relief holes, and the length of the graph formed by the second pressure relief holes in the longitudinal axis direction of the guide plate is larger than that of the plurality of rows of the first pressure relief holes.

Further, the baffle is square board, the left end and the right-hand member of baffle with this body coupling of tuyere, the upper end and the lower extreme of baffle with be equipped with the air outlet between the tuyere body.

Furthermore, the air outlets are parallel to each other, and the width of the air outlets is 6-10 mm.

Furthermore, the aperture of each second pressure relief hole is 3-5mm, and the distance between every two adjacent second pressure relief holes is 8-12 mm.

Further, the length of the graph formed by the second pressure relief holes on the transverse axis of the guide plate is 1/3-1/2 of the length of the guide plate.

Further, the length of the graph formed by the second pressure relief holes on the longitudinal axis of the guide plate is 1/5-1/3 of the width of the guide plate.

Furthermore, the guide plate is provided with two rows of first pressure relief holes, and the two rows of first pressure relief holes are distributed on two sides of the transverse axis of the guide plate in a mirror image mode.

Furthermore, the first pressure relief holes in a plurality of rows are parallel to each other, and the distance between every two adjacent rows of the first pressure relief holes is 15-25 mm.

Furthermore, the aperture of each first pressure relief hole is 3-5mm, and the distance between every two adjacent first pressure relief holes in the same row is 8-12 mm.

In another aspect, the present invention provides a coating oven comprising the above-described tuyere device.

Compared with the prior art, the technical scheme provided by the utility model has at least the following beneficial effects: the utility model improves the existing air nozzle device, the second pressure relief hole is added on the guide plate, and the uniformity of stress on two sides of the pole piece is effectively improved by regulating and controlling the aperture and distribution of the first pressure relief hole and the second pressure relief hole and the width of the air outlet, thereby reducing the probability of the bending of the pole piece and the cracking of two sides of the pole piece caused by uneven stress, further improving the quality of a terminal product and reducing the production cost.

Drawings

In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the drawings needed to be used in the embodiments will be briefly described below, it should be understood that the following drawings only illustrate some embodiments of the present invention and therefore should not be considered as limiting the scope, and for those skilled in the art, other related drawings can be obtained according to the drawings without inventive efforts.

Fig. 1 is a schematic view of a tuyere device according to an embodiment.

Wherein the reference numerals are: 1-a tuyere body, 2-a guide plate, 21-a first pressure relief hole, 22-a second pressure relief hole and 3-an air outlet.

Detailed Description

To facilitate an understanding of the utility model, the utility model will now be described more fully with reference to the accompanying drawings. Preferred embodiments of the present invention are shown in the drawings. This invention may, however, be embodied in many different forms and should not be construed as limited to the embodiments set forth herein. Rather, these embodiments are provided so that this disclosure will be thorough and complete.

As shown in fig. 1, an embodiment provides an air nozzle device, the air nozzle device includes an air nozzle body 1, a guide plate 2 is disposed at a top end of the air nozzle body 1, the guide plate 2 is a rectangular plate, two rows of first pressure release holes 21 are disposed on the guide plate 2, the two rows of first pressure release holes 21 are disposed on two sides of a transverse axis of the guide plate 2 and distributed in a mirror image manner, a second pressure release hole 22 is further disposed on the guide plate 2, a plurality of second pressure release holes 22 are disposed on an upper side and a lower side of the first pressure release holes 21, the second pressure release holes 22 are distributed in an axisymmetric manner along the transverse axis and a longitudinal axis of the guide plate 2, a length of an ellipse formed by the second pressure release holes 22 in the transverse axis direction of the guide plate 2 is smaller than a length of each row of the first pressure release holes 21, and a length of an ellipse formed by the second pressure release holes 22 in the longitudinal axis direction of the guide plate 2 is greater than widths of the two rows of the first pressure release holes 21.

The shapes of the first pressure relief hole 21 and the second pressure relief hole 22 are designed to be circular holes in consideration of the comprehensive consideration of the convenience of industrial processing, the beauty of workpieces and the uniformity of the air output of the tuyere. The size and distribution density of the second pressure release holes 22 affect the output of the air volume, and further affect the stress condition of the pole piece and the quality of the pole piece, so that the aperture size and distribution density of the second pressure release holes 22 need to be regulated and controlled to achieve the purposes of uniform output of the air volume and uniform stress of the pole piece. In this embodiment, the aperture of the second pressure release hole 22 is set to be 4mm, and the distance between two adjacent second pressure release holes 22 is set to be 10 mm. The oval shape formed by the second relief hole 22 has a length 2/5 of the length of the guide plate 2 on the transverse axis of the guide plate 2 and a length 1/4 of the width of the guide plate 2 on the longitudinal axis of the guide plate 2. The too short length of the second pressure relief hole 22 in the axial direction of the guide plate 2 does not improve the uniformity of pressure and intensity between the tuyere and the pole piece, while the too long length weakens the uniformity of pressure and intensity between the tuyere and the pole piece, so that the pressure and intensity between the tuyere and the pole piece cannot meet the requirement of drying the pole piece, and further the quality of the pole piece is influenced.

Two rows of first pressure relief holes 21 on two sides of the transverse axis of the guide plate 2 are parallel to each other, a straight line formed by each row of first pressure relief holes 21 is parallel to the long edge of the guide plate 2, and the distance between every two adjacent rows of first pressure relief holes 21 is 20 mm. Too close or too far distance between two adjacent rows of first pressure relief holes 21 influences the stress uniformity of the pole pieces in the drying process. The size and the distribution density of the first pressure relief holes 21 are also factors influencing the output of the air volume, the output condition of the air volume influences the stress condition of the pole piece and the quality of the pole piece, in the embodiment, the aperture of the first pressure relief hole 21 is set to be 4mm, and the distance between two adjacent first pressure relief holes 21 in the same row is set to be 10mm, so that the uniformity of the output air volume is improved, and the appropriate pressure intensity is provided.

The left end and the right-hand member of baffle 2 all are connected with tuyere body 1, be equipped with the air outlet 3 of bar between the upper end of baffle 2 and lower extreme and the tuyere body 1, two bar air outlets 3 are parallel to each other, the length of air outlet 3 is the same with the length of baffle 2, the amount of wind of 3 department outputs of air outlet is the important factor that influences pole piece atress homogeneity, the width of air outlet 3 sets up to 8mm in this embodiment, it is moderate to guarantee the amount of wind of 3 department outputs of air outlet, avoid because of the amount of wind of 3 departments of air outlet, pressure is too big and leads to the pole piece to appear crooked because of the atress inequality in the drying process, the phenomenon of fracture.

The width of an air outlet is regulated and controlled to reduce the air quantity and the pressure at the air outlet, so that the air quantity at the air outlet is in a proper range, and the probability of bending and cracking of a pole piece caused by overlarge air quantity and pressure at the air outlet is reduced; 2. the aperture and the distribution density of the first pressure relief hole are regulated and controlled to improve the uniformity of output air volume and maintain proper pressure intensity; 3. the second pressure relief holes are additionally arranged, the aperture and the distribution density of the second pressure relief holes are regulated and controlled, the uniformity of pressure and intensity between the air nozzle and the pole piece is improved, and the probability of bending and cracking of the pole piece caused by overlarge air quantity and pressure at the air outlet is further reduced. According to the utility model, through the improvement and optimization of the air nozzle structure, the quality of the pole piece is improved, the quality of a terminal product is improved, and the production cost is reduced.

The above embodiments only express several embodiments of the present invention, and the description thereof is more specific and detailed, but not construed as limiting the scope of the present invention. It should be noted that, for a person skilled in the art, several variations and modifications can be made without departing from the inventive concept, which falls within the scope of the present invention. Therefore, the protection scope of the present patent shall be subject to the appended claims.

Claims

1. The utility model provides an air nozzle device, air nozzle device includes the air nozzle body, the top of air nozzle body is equipped with the baffle, be equipped with first pressure release hole on the baffle, a plurality of row first pressure release hole distributes the horizontal axis both sides of baffle, its characterized in that, still be equipped with second pressure release hole on the baffle the upside and the downside of first pressure release hole are equipped with a plurality of second pressure release hole, second pressure release hole along the axis of baffle is the axisymmetric distribution, the figure that second pressure release hole formed is in the ascending length of baffle horizontal axis direction is less than every row the length of first pressure release hole, the figure that second pressure release hole formed is in the ascending length of baffle longitudinal axis direction is greater than a plurality of rows the width of first pressure release hole.

2. The tuyere device according to claim 1, wherein the diameter of the second pressure relief holes is 3 to 5mm, and the distance between two adjacent second pressure relief holes is 8 to 12 mm.

3. The tuyere device of claim 1, wherein the length of the pattern of the second relief holes on the lateral axis of the guide plate is 1/3-1/2 of the length of the guide plate.

4. The tuyere device of claim 1, wherein the length of the pattern of the second relief holes on the longitudinal axis of the guide plate is 1/5-1/3 of the width of the guide plate.

5. The tuyere device according to claim 1, wherein the guide plate is a square plate, left and right ends of the guide plate are connected to the tuyere body, and air outlets are provided between upper and lower ends of the guide plate and the tuyere body.

6. The tuyere device of claim 5, wherein the air outlets are parallel to each other, and a width of the air outlets is 6-10 mm.

7. The tuyere device according to claim 1, wherein a plurality of rows of the first pressure-relief holes are parallel to each other, and a distance between two adjacent rows of the first pressure-relief holes is 15 to 25 mm.

8. The tuyere device according to claim 7, wherein the diameter of the first pressure-relief holes is 3-5mm, and the distance between two adjacent first pressure-relief holes in the same row is 8-12 mm.

9. The tuyere device according to claim 1, wherein two rows of the first pressure release holes are formed in the guide plate, and the two rows of the first pressure release holes are arranged in a mirror image manner on both sides of a transverse axis of the guide plate.

10. A coating oven characterized in that it comprises a tuyere device according to any of claims 1-9.