Drying oven baffle device capable of reducing air volume

Abstract

The utility model discloses a drying oven baffle device capable of reducing air volume, which comprises a first fixing plate and a second fixing plate, an upper end wind shield is arranged between the first fixing plate and the second fixing plate, a plurality of air outlets are uniformly distributed on two sides of the upper end wind shield, the air outlets are through holes, and the aperture of each air outlet is 2mm-5mm. The drying oven is simple in structure and novel in design, edge blowing quantity is weakened by the aid of the plurality of air outlets, shielding area can be changed by moving the drying oven baffles or increasing the number of the drying oven baffles so as to control air quantity and drying effect of a temperature area on edges of pole pieces, and the drying oven can be adjusted and changed according to different models and widths. Adjustment and improvement of poor edge cracking are facilitated, adjustment efficiency is improved, and poor cracking is reduced.

Description

Technical Field

[0001] The utility model relates to the technical field of lithium battery ovens, in particular to an oven baffle device capable of reducing air volume. Background Art

[0002] According to aerodynamics, namely the wall attachment effect, the pole piece is suspended in the oven and moves in a sinusoidal wave shape under the action of the upper and lower nozzles. However, during the battery production process, since the air volume at the edge is larger than that in the middle area, it moves in an irregular sinusoidal wave shape, resulting in edge cracking during the process. In the actual production process, by measuring the air volume distribution in the width direction of the oven nozzle, it is found that the air volume in the direction of the edge pole piece cracking is larger. The traditional solution is to adjust the air volume and temperature to meet production requirements. The air volume and temperature are slow to adjust, and can only be roughly adjusted as a whole, and cannot be accurately adjusted locally, and the adjustment response is slow, resulting in an increase in cracking defects.

[0003] The traditional oven air nozzle has two fixed rows of holes for suction and two sides for horizontal blowing. The air volume and temperature can only be adjusted as a whole, resulting in differences in the horizontal drying rate on the surface of the electrode. The edge electrodes are over-dried, and the local air volume and temperature zone cannot be adjusted through traditional adjustment methods.

[0004] The unreasonable design of the air nozzle results in inconsistent drying speeds in the middle and edges of the electrode surface, making it impossible to effectively adjust. Summary of the invention

[0005] The purpose of the utility model is to provide an oven baffle device capable of reducing air volume, so as to solve the problems raised in the above background technology. To achieve the above purpose, the utility model provides the following technical solution: an oven baffle device capable of reducing air volume, comprising a first fixed plate and a second fixed plate, an upper wind shielding plate is arranged between the first fixed plate and the second fixed plate, and a plurality of air outlets are evenly arranged on both sides of the upper wind shielding plate.

[0006] Preferably, the air outlet is a through hole, and the aperture size of the air outlet is 2 mm to 5 mm.

[0007] Preferably, the first fixing plate includes a first edge end clamping plate and a first side end inclined plate, and the second fixing plate includes a second edge end clamping plate and a second side end inclined plate.

[0008] Preferably, the first side end slope plate is arranged between the first edge end clamping plate and the upper end wind shielding plate, and the second side end slope plate is arranged between the second edge end clamping plate and the upper end wind shielding plate.

[0009] Preferably, the angle between the first edge end clamping plate and the first side end slope plate is 110° to 150°, and the angle between the second edge end clamping plate and the second side end slope plate is 110° to 150°.

[0010] Preferably, the side edges of the first edge end clamping plate and the first side end slope plate, and the side edges of the second edge end clamping plate and the second side end slope plate are all arc-shaped.

[0011] Preferably, the bottoms of the first edge end clamping plate and the second edge end clamping plate are both rounded.

[0012] Compared with the prior art, the beneficial effects of the utility model are: the utility model has a novel design, utilizes a reasonable mechanical structure, and cleverly brings into play the inherent potential of various elements. The oven baffle is placed on the cracked edge of the pole piece, and a number of air outlets are used to reduce the air blowing volume at the edge. The shielding area can be changed by moving the oven baffle or increasing the number of the oven baffles, thereby controlling the air volume and temperature zone to control the drying effect of the pole piece edge. It can be adjusted and changed according to different models and widths, which is conducive to adjusting and improving poor edge cracking, improving adjustment efficiency, and reducing poor cracking. BRIEF DESCRIPTION OF THE DRAWINGS

[0013] Figure 1 It is a schematic diagram of the overall structure of the utility model;

[0014] Figure 2 This is the front view of the utility model;

[0015] Figure 3 It is a side view of the utility model;

[0016] Figure 4 It is a top view of the utility model;

[0017] Figure 5 This is an enlarged view of the air outlet in the utility model. DETAILED DESCRIPTION

[0018] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0019] See also Figure 1-5 The utility model provides a technical solution: an oven baffle device capable of reducing air volume, comprising a first fixed plate 1 and a second fixed plate 2, an upper wind shielding plate 3 is arranged between the first fixed plate 1 and the second fixed plate 2, a plurality of air outlets 4 are evenly distributed on both sides of the upper wind shielding plate 3, the air outlets 4 are through holes, and the aperture size of the air outlets 4 is 3.5 mm.

[0020] By designing a baffle with the same width as the size of the oven nozzle, and opening a hole in the upper wind shield 3 corresponding to the blowing port of the nozzle, the oven baffle is placed on the cracked edge of the electrode and fixed, and a number of air outlets 4 are used to reduce the edge blowing volume, so as to control the air volume and temperature zone to control the drying effect of the electrode edge.

[0021] The first fixed plate 1 includes a first edge end clamp plate 11 and a first side end ramp plate 12, the second fixed plate 2 includes a second edge end clamp plate 21 and a second side end ramp plate 22, the first side end ramp plate 12 is arranged between the first edge end clamp plate 11 and the upper end wind shield plate 3, and the second side end ramp plate 22 is arranged between the second edge end clamp plate 21 and the upper end wind shield plate 3.

[0022] The first side end ramp plate 12 and the second edge end clamp plate 21 are both arranged inclined, and the inclination directions of the first side end ramp plate 12 and the second edge end clamp plate 21 are axially symmetrical, the angle between the first edge end clamp plate 11 and the first side end ramp plate 12 is 135°, and the angle between the second edge end clamp plate 21 and the second side end ramp plate 22 is 135°.

[0023] The sides of the first edge end clamping plate 11 and the first side end ramp plate 12, the second edge end clamping plate 21 and the second side end ramp plate 22 are all arc-shaped, and the rounded corners are used for transition to prevent the baffle from scratching the pole piece.

[0024] The bottoms of the first edge end clamping plate 11 and the second edge end clamping plate 21 are both rounded.

[0025] The oven baffle can be used universally among different types of battery cells, and the shielding area can be changed by moving the oven baffle or increasing the number of the oven baffles. The operation is convenient, and the flexibility and versatility of use are improved.

[0026] Working principle: After welding the first edge end clamping plate 11, the first side end ramp plate 12, the second edge end clamping plate 21, the second side end ramp plate 22 and the upper end wind shield plate 14, place the oven baffle on the oven air nozzle and move it to both sides of the oven air nozzle through the slide.

[0027] During normal production, confirm the cracking position of the electrode and the position of the coated electrode, and then adjust the position of the oven baffle according to the cracking position, let it slide to the position corresponding to the cracking, and then fix it on the air nozzle. After the air volume is turned on, the air volume is reduced through a number of air outlets 4 evenly distributed on both sides of the upper wind shield 3, so that the evaporation rate in the middle of the oven electrode is consistent with that on both sides. When the evaporation rate is inconsistent, continue to adjust the position of the baffle until the drying rate is consistent to avoid over-drying, thereby solving the problem of over-drying of the edge of the electrode.

[0028] During the production process, if cracks appear in other positions or other width models are changed, the oven baffle can be moved to the corresponding crack position.

[0029] When there is horizontal drying inconsistency between the left and right sides during the production process, only the left or right nozzle baffle can be installed; when there is vertical drying inconsistency, it can be installed in steps until the drying rate is adjusted to be consistent; when the cracked oven is not fixed, it can be installed to the cracked oven. The above installation positions can be adjusted in real time according to the actual cracking situation.

[0030] Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions and variations may be made to the embodiments without departing from the principles and spirit of the present invention, and that the scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. An oven baffle device capable of reducing air volume, characterized in that: It comprises a first fixing plate (1) and a second fixing plate (2), wherein an upper wind shielding plate (3) is provided between the first fixing plate (1) and the second fixing plate (2), and a plurality of air outlets (4) are evenly distributed on both sides of the upper wind shielding plate (3).

2. The oven baffle device capable of reducing air volume according to claim 1, characterized in that: The air outlet (4) is a through hole, and the aperture of the air outlet (4) is 2 mm to 5 mm.

3. The oven baffle device capable of reducing air volume according to claim 1, characterized in that: The first fixing plate (1) comprises a first edge end clamping plate (11) and a first side end inclined plate (12), and the second fixing plate (2) comprises a second edge end clamping plate (21) and a second side end inclined plate (22).

4. The oven baffle device capable of reducing air volume according to claim 3, characterized in that: The first side end slope plate (12) is arranged between the first edge end clamping plate (11) and the upper end wind shielding plate (3), and the second side end slope plate (22) is arranged between the second edge end clamping plate (21) and the upper end wind shielding plate (3).

5. The oven baffle device capable of reducing air volume according to claim 3, characterized in that: The angle between the first edge end clamping plate (11) and the first side end inclined plate (12) is 110° to 150°, and the angle between the second edge end clamping plate (21) and the second side end inclined plate (22) is 110° to 150°.

6. The oven baffle device capable of reducing air volume according to claim 3, characterized in that: The side edges of the first edge end clamping plate (11) and the first side end inclined plate (12), and the side edges of the second edge end clamping plate (21) and the second side end inclined plate (22) are all arc-shaped.

7. The oven baffle device capable of reducing air volume according to claim 3, characterized in that: The bottoms of the first edge end clamping plate (11) and the second edge end clamping plate (21) are both rounded.

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