Dedusting device for pole piece coating

Abstract

The utility model discloses a dust removal device for pole piece coating, which is characterized in that the dust removal device comprises a shell with a cavity, the shell is arranged on the discharge side of a coating oven, and the cavity is provided with an open channel facing a pole piece or a diaphragm; an ion wind bar which is arranged towards the pole piece or the diaphragm through the open channel is mounted in the cavity, and an air outlet of the ion wind bar is positioned on the open channel; and the cavity is connected to a negative pressure system through a pipeline. The device has the advantages of being capable of carrying out electrostatic neutralization and dust removal on the pole piece, beneficial to improving the coating quality and the like.

Description

Technical Field

[0001] The utility model relates to the technical field of lithium battery production, in particular to a dust removal device for pole piece coating. Background Art

[0002] With the development of society, electronic products, power tools and other applications are becoming more and more widespread. From the safety perspective, the market's requirements for the battery performance of electronic products are also getting higher and higher. Therefore, improving quality and safety is particularly important in the product production process. In the battery production process, the coating process is the core process of battery cell manufacturing and also determines the battery cell performance.

[0003] When the existing equipment is performing the electrode coating process, there are dust and foreign matter factors in the workshop environment, especially in the coating oven due to long-term production, there are a lot of dust and foreign matter, and it is difficult to effectively control. In addition, during the electrode production and conveying process, there is contact and friction between the electrode and the equipment roller, which generates static electricity, static electricity effect, static electricity foreign matter adhesion, dust accumulation, which in turn affects the resistance value of the coating surface and the self-discharge performance of the battery cell, affecting the safety of the battery cell. On the other hand, after the main body of the equipment is powered on, the same electric effect will be generated, resulting in static electricity on the electrode. Utility Model Content

[0004] In view of the above-mentioned deficiencies in the prior art, the technical problem to be solved by the present invention is: how to provide a dust removal device for electrode coating that can neutralize static electricity and remove dust from the electrode, thereby improving the coating quality.

[0005] In order to solve the above technical problems, the utility model adopts the following technical solutions:

[0006] A dust removal device for electrode coating, characterized in that it comprises a shell having a cavity, wherein the shell is arranged on the discharge side of a coating oven, and the cavity has an open channel arranged toward the electrode or the diaphragm; an ion wind rod is installed in the cavity and arranged toward the electrode or the diaphragm via the open channel, and the air outlet of the ion wind rod is located on the open channel; the cavity is connected to a negative pressure system through a pipeline.

[0007] In the above structure, the ion wind rod is used to blow air toward the electrode or diaphragm, which can not only neutralize the static electricity and clean the dust of the electrode and diaphragm, but also use the blowing air to take away the heat of the electrode or diaphragm, realize air-cooled drying, and improve the drying effect of the electrode. Since the cavity is connected to the negative pressure system, the cavity is in a negative pressure environment, and the air outlet of the ion wind rod is located on the open channel. After the ion wind rod blows up the dust, the dust is immediately in a negative pressure environment, and is thus drawn out by the cavity and the negative pressure system, thereby avoiding the expansion of dust, which is beneficial to improving the dust removal effect of the electrode.

[0008] Furthermore, the shell is in an elongated strip shape and is arranged along the width direction of the pole piece; and a plurality of ion wind rods are evenly distributed along the length direction of the shell.

[0009] Furthermore, the ion wind rods are arranged in two rows along the width direction of the shell, and the air outlets of the ion wind rods in any row are inclined toward the other row.

[0010] In this way, the wind blown out by the two rows of ion wind rods is located in the middle of the open channel, so that it can be better sucked away by the negative pressure of the cavity, thereby improving the dust removal effect.

[0011] Furthermore, the included angle between the two rows of ion wind rods is 10-20°.

[0012] Furthermore, two shells are provided and are symmetrically arranged on both sides of the pole piece or the diaphragm.

[0013] Furthermore, it also includes a lifting mechanism, and the shell is arranged at the lifting end of the lifting mechanism.

[0014] Furthermore, a position sensor is provided on the shell, and the position sensor is close to the open channel.

[0015] Furthermore, the lifting mechanism is a vertically arranged servo electric cylinder.

[0016] In summary, the utility model has the advantages of being able to neutralize static electricity and remove dust from the electrode, which is beneficial to improving coating quality. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1 It is a structural schematic diagram of this embodiment. DETAILED DESCRIPTION

[0018] The utility model is further described in detail below in conjunction with the embodiments.

[0019] When implementing: Figure 1 As shown, a dust removal device for electrode coating includes a shell 1 having a cavity 2, the shell 1 is arranged on the discharge side of the coating oven, and is symmetrically arranged on both sides of the electrode or diaphragm, the cavity 2 has an open channel 3 arranged toward the electrode or diaphragm; an ion wind rod 4 is installed in the cavity 2 and is arranged toward the electrode or diaphragm via the open channel 3, and the air outlet of the ion wind rod 4 is located on the open channel 3; the cavity 2 is connected to the negative pressure system through a pipeline. The ion wind rod 4 in this embodiment is a corona pulse ion rod, the shell 1 is in a long strip shape, and is arranged along the width direction of the electrode; a plurality of ion wind rods 4 are evenly distributed along the length direction of the shell 1.

[0020] In order to facilitate operation, a lifting mechanism (not shown in the figure) is also provided, the housing 1 is provided at the lifting end of the lifting mechanism, and an in-position sensor is provided on the housing 1, and the in-position sensor is close to the open channel 3. In this way, the distance between the open channel and the pole piece or the diaphragm can be controlled. The lifting mechanism can adopt a servo electric cylinder, which has high control accuracy and low cost.

[0021] In the above structure, the ion wind rod is used to blow air toward the electrode or diaphragm, which can not only neutralize the static electricity and clean the dust of the electrode and diaphragm, but also use the blowing air to take away the heat of the electrode or diaphragm, realize air-cooled drying, and improve the drying effect of the electrode. Since the cavity is connected to the negative pressure system, the cavity is in a negative pressure environment, and the air outlet of the ion wind rod is located on the open channel. After the ion wind rod blows up the dust, the dust is immediately in a negative pressure environment, and is thus drawn out by the cavity and the negative pressure system, thereby avoiding the expansion of dust, which is beneficial to improving the dust removal effect of the electrode.

[0022] Of course, in specific implementation, the ion wind rods 4 can also be arranged in two rows along the width direction of the housing 1, and the air outlets of any row of the ion wind rods 4 are tilted toward the other row, and the angle between the two rows of the ion wind rods 4 is 10-20 degrees. In this way, the wind blown out by the two rows of ion wind rods is located in the middle of the open channel, so that it can be better sucked away by the negative pressure of the cavity, thereby improving the dust removal effect.

[0023] The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention. Any modifications, equivalent substitutions and improvements made within the spirit and principles of the present invention shall be included in the protection scope of the present invention.

Claims

1. A dust removal device for electrode coating, characterized in that: The invention comprises a shell (1) having a cavity (2), wherein the shell (1) is arranged at the discharge side of a coating oven, and the cavity (2) has an open channel (3) arranged toward a pole piece or a diaphragm; an ion wind rod (4) is installed in the cavity (2) and is arranged toward the pole piece or the diaphragm via the open channel, and an air outlet of the ion wind rod (4) is located on the open channel (3); and the cavity (2) is connected to a negative pressure system via a pipeline.

2. The dust removal device for electrode coating according to claim 1, characterized in that: The shell (1) is in the shape of an elongated strip and is arranged along the width direction of the pole piece; a plurality of ion wind rods (4) are evenly distributed along the length direction of the shell (1).

3. The dust removal device for electrode coating according to claim 2, characterized in that: The ion wind bars (4) are arranged in two rows along the width direction of the housing (1), and the air outlets of the ion wind bars (4) in any row are arranged to be inclined toward the other row.

4. The dust removal device for electrode coating according to claim 3, characterized in that: The included angle between the two rows of ion wind rods (4) is 10 to 20 degrees.

5. The dust removal device for electrode coating according to claim 1, characterized in that: The housing (1) is provided with two pieces, and is symmetrically arranged on both sides of the pole piece or the diaphragm.

6. The dust removal device for electrode coating according to claim 1, characterized in that: It also comprises a lifting mechanism, and the shell (1) is arranged at the lifting end of the lifting mechanism.

7. The dust removal device for electrode coating according to claim 6, characterized in that: The housing (1) is provided with an in-place sensor, the in-place sensor being close to the open channel (3).

8. The dust removal device for electrode coating according to claim 6, characterized in that: The lifting mechanism is a vertically arranged servo electric cylinder.

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