Non-contact pole piece dust removal device

Abstract

The utility model discloses a non-contact pole piece dust removal device, which relates to the technical field of batteries and comprises a main shell, a mounting groove is mounted on one side of the main shell, and the main shell is divided into a first mounting cavity, a second mounting cavity, a first air exhaust cavity and a second air exhaust cavity by partition plates. A plasma generation system for performing low-temperature plasma flame treatment on the edge part of the pole piece is mounted in the first mounting cavity of the main shell, an air inlet pipe and an air exhaust pipe are mounted in the mounting groove, and the first mounting cavity and the second mounting cavity are communicated with an air outlet port of the air inlet pipe; and the first air exhaust cavity and the second air exhaust cavity are communicated with an air inlet port of the air exhaust pipe. The dust removal device provided by the utility model is a non-contact dust removal device, dust on the edge and the surface of the pole piece is removed through the plasma generator and the ultrasonic generator respectively, and dust collection operation is carried out through the cooperation of the first air exhaust cavity and the second air exhaust cavity with the air exhaust system externally connected with the air exhaust pipe; the whole device has the advantages of high efficiency and no secondary pollution.

Description

Technical Field

[0001] The utility model relates to the technical field of batteries, in particular to a non-contact type pole piece dust removal device. Background Art

[0002] The dust removal methods of lithium-ion battery pole pieces can be mainly divided into contact dust removal and non-contact dust removal. The brush dust removal system equipped on the die-cutting and slitting equipment is a contact dust removal device, which consists of a brush and a negative pressure system. When the equipment is running, the brush rotates in the opposite direction of the pole piece and wipes the surface of the pole piece to clean the dust adhering to the surface of the pole piece. The cleaned dust is recovered by the negative pressure system. However, after long-term operation, dust will also adhere to the surface of the roller brush, causing secondary pollution. Non-contact dust removal is mainly divided into air knife dust removal and ultrasonic dust removal. Air knife dust removal uses high-pressure air to blow the dust on the surface of the pole piece away from the pole piece, and then uses the matching negative pressure system to absorb the dust. However, air knife dust removal has little effect on dust with smaller particles, so ultrasonic dust removal has been developed to clean the dust remaining in the viscous layer on the surface of the pole piece. Ultrasonic dust removal has the advantages of high efficiency and no secondary pollution, but ultrasonic dust removal only works on dust that falls off the pole piece and is adsorbed on the surface of the pole piece, and the effect is not obvious for dust that has not completely fallen off.

[0003] Based on the problems existing in the above-mentioned existing equipment, we proposed a new type of non-contact electrode dust removal device to solve the problems existing in the prior art. Utility Model Content

[0004] The purpose of the utility model is to provide a non-contact pole piece dust removal device to solve the above-mentioned multiple defects caused by the prior art.

[0005] A non-contact pole piece dust removal device comprises a main shell, a mounting groove is installed on one side of the main shell, the main shell is divided into a first mounting cavity, a second mounting cavity, a first exhaust cavity and a second exhaust cavity by a partition, a plasma generating system for performing low-temperature plasma flame treatment on the edge portion of the pole piece is installed in the first mounting cavity of the main shell, an air inlet pipe and an exhaust pipe are installed in the mounting groove, the first mounting cavity and the second mounting cavity are connected to the air outlet port of the air inlet pipe, and the first exhaust cavity and the second exhaust cavity are connected to the air inlet port of the exhaust pipe.

[0006] Preferably, the plasma generating system includes a plasma generator symmetrically installed on the top wall of the main shell located in the first installation cavity, the two plasma generators are connected to each other through an air pipe, a nozzle is provided at the bottom end of the plasma generator, and the lower port of the nozzle is installed in a through hole of the main shell arranged on the arc-shaped side wall at the lower end of the first installation cavity.

[0007] Preferably, an ultrasonic generator is installed on the side wall of the partition located in the second installation cavity.

[0008] Preferably, the gap distance between the bottom of the main shell and the pole piece is 2-4 mm.

[0009] Preferably, the pole piece is straightened and conveyed by a roller group, the roller group is rotatably connected to the vertical plate, and the main shell and both sides of the mounting groove are connected to the vertical plate by angle steel.

[0010] The advantages of the utility model are: the dust removal device proposed in the utility model is a non-contact dust removal device, which uses a plasma generator and an ultrasonic generator to remove dust from the edge and surface of the pole piece respectively, and uses the first vacuum chamber and the second vacuum chamber to cooperate with the vacuum system connected to the vacuum pipe to perform dust removal operations. The entire device has the advantages of high efficiency and no secondary pollution. Because ultrasonic dust removal is ineffective for polymer materials, ultrasonic dust removal cannot remove the dust that is still adhered to the coating of the pole piece at the edge of the die-cutting and stripping (part of the dust is still adhered to the coating area by the adhesive). At this time, the mechanical action of the brush can be used to remove it from the coating area, but the brush may cause secondary pollution. Plasma generation system treatment can destroy the chemical bonds of the polymer, so that the dust is separated from the edge of the pole piece, solve the problems existing in the above two devices, and achieve an improvement in dust removal efficiency and product yield. BRIEF DESCRIPTION OF THE DRAWINGS

[0011] Figure 1 It is a schematic diagram of the overall structure of the utility model.

[0012] Figure 2 It is a schematic structural diagram of the utility model as a whole, a vertical plate and a roller group.

[0013] Figure 3 It is a schematic diagram of the structure inside the main shell of the utility model.

[0014] Figure 4 It is a schematic diagram of the structure inside the first installation cavity and the installation groove of the utility model.

[0015] Figure 5 It is a structural schematic diagram of the operation diagram of the equipment of the utility model.

[0016] Among them: 1-main shell; 2-installation groove; 3-first installation cavity; 4-second installation cavity; 5-first exhaust cavity; 6-second exhaust cavity; 7-pole piece; 8-plasma generating system; 9-inlet pipe; 10-exhaust pipe; 11-plasma generator; 12-air pipe; 13-nozzle; 14-ultrasonic generator; 15-roller group; 16-vertical plate. DETAILED DESCRIPTION

[0017] In order to make the technical means, creative features, objectives and effects achieved by the present invention easy to understand, the present invention is further described below in conjunction with specific implementation methods.

[0018] like Figures 1 to 5 As shown, a non-contact pole piece dust removal device comprises a main shell 1, a mounting groove 2 is installed on one side of the main shell 1, the main shell 1 is divided into a first mounting cavity 3, a second mounting cavity 4, a first exhaust cavity 5 and a second exhaust cavity 6 by a partition, the main shell 1 is located in the first mounting cavity 3 and a plasma generating system 8 for performing low-temperature plasma flame treatment on the edge portion of the pole piece 7 is installed, an air inlet pipe 9 and an exhaust pipe 10 are installed in the mounting groove 2, the first mounting cavity 3 and the second mounting cavity 4 are connected to the air outlet port of the air inlet pipe 9, and the first exhaust cavity 5 and the second exhaust cavity 6 are connected to the air inlet port of the exhaust pipe 10. The air inlet end of the air inlet pipe 9 is externally connected to a blower fan, and the air inlet pipe 9 is used to provide the gas required for the plasma generating system 8 to generate a low-temperature plasma flame and the ultrasonic generator 14 to generate a high-frequency vibrating airflow. The air exhaust end of the exhaust pipe 10 is externally connected to a negative pressure dust suction device, and the exhaust pipe 10 provides negative pressure for the first exhaust chamber 5 and the second exhaust chamber 6 to ensure that the dust removed from the surface of the pole piece 7 can be absorbed by the negative pressure dust suction device to avoid secondary pollution. The lower end of the main shell 1 is provided with an arc-shaped mechanism that is concentric with the rollers of the roller group 15.

[0019] In this embodiment, the plasma generating system 8 includes a plasma generator 11 symmetrically mounted on the top wall of the main housing 1 located in the first installation cavity 3, the two plasma generators 11 are connected to each other through an air pipe 12, a nozzle 13 is provided at the bottom end of the plasma generator 11, and the lower port of the nozzle 13 is installed in a through hole of the main housing 1 provided on the arc-shaped side wall at the lower end of the first installation cavity 3. The plasma generator 11 is electrically connected to the on-site power supply. When working, the edge of the pole piece 7 is first treated by the low-temperature plasma flame sprayed by the plasma generator 11, so that the dust adhering to the edge falls off from the edge of the pole piece 7, and the peeled dust is absorbed by the first exhaust cavity 5. Then, the pole piece 7 is vibrated by the high-frequency wind generated by the ultrasonic generator 14, and the dust adsorbed by the surface viscosity layer is separated from the surface of the pole piece 7 and absorbed by the second exhaust cavity 6. The plasma generating system 8 is installed at the feeding position of the dust removal device and contacts the pole piece 7 earliest in the entire dust removal device.

[0020] In this embodiment, an ultrasonic generator 14 is installed on the side wall of the partition located in the second installation cavity 4. The ultrasonic generator 14 is installed along the length direction of the main housing 1, the ultrasonic generator 14 is electrically connected to the on-site power supply, and the two ends of the ultrasonic generator 14 are respectively installed on the inner side wall of the main housing 1 and the installation groove 2 located in the second installation cavity 4.

[0021] In this embodiment, the gap distance between the bottom of the main housing 1 and the pole piece 7 is 2-4 mm. If the gap distance between the bottom of the main housing 1 and the pole piece 7 is too small, there is a risk of belt scraping and belt breaking, and if the gap distance is too large, the dust removal effect will be affected.

[0022] In this embodiment, the pole piece 7 is straightened and transported by a roller group 15, the roller group 15 is rotatably connected to a vertical plate 16, and the main housing 1 and both sides of the mounting groove 2 are connected to the vertical plate 16 by angle steel. The vertical plate 16 is installed on a workbench, the roller group 15 is driven by a driving assembly, and mounting rollers for releasing and winding the pole piece 7 are provided on both sides of the roller group 15.

[0023] The working principle of the utility model is as follows: the device is used to straighten and convey the pole piece 7 through the rollers provided by the roller group 15, the plasma generator 11, the ultrasonic generator 14, the blower externally connected to the air inlet end of the air inlet pipe 9, and the negative pressure exhaust device externally connected to the exhaust pipe 10 are started, and then the pole piece 7 is close to the lower arc-shaped side wall of the main shell 1 through the roller group 15, and then the low-temperature plasma flame sprayed from the nozzle 13 of the plasma generator 11 processes the edges of both sides of the pole piece 7, so that the dust adhering to the edge falls off from the edge of the pole piece 7. At this time, the gas ejected from the nozzle 13 and the first vacuum chamber 5 form an exhaust channel, and the stripped dust is absorbed by the first vacuum chamber 5. Then, the pole piece 7 is vibrated by the high-frequency wind generated by the ultrasonic generator 14, so that the dust adsorbed by the surface viscosity layer is separated from the surface of the pole piece 7. At this time, the airflow of the high-frequency vibrating airflow generated by the ultrasonic generator 14 side and the first vacuum chamber 5 and the second vacuum chamber 5 form a two-way exhaust channel, and the stripped dust is absorbed by the second vacuum chamber 6, thereby realizing the cleaning of the dust at both ends and on the surface of the pole piece 7.

[0024] The dust removal device proposed in the utility model is a non-contact dust removal device, which uses a plasma generator 11 and an ultrasonic generator 14 to remove dust from the edge of the pole piece 7 and the surface of the pole piece 7 respectively, and performs dust removal operations through the first vacuum chamber 5 and the second vacuum chamber 6 in cooperation with the vacuum system externally connected to the vacuum pipe 10. The entire device has the advantages of high efficiency and no secondary pollution. Because ultrasonic dust removal is ineffective for polymer materials, ultrasonic dust removal cannot remove the dust that is still adhered to the coating of the pole piece 7 at the edge of the die-cutting and stripping (part of the dust is still adhered to the coating area by the adhesive). At this time, the mechanical action of the brush can be used to remove it from the coating area, but the brush may cause secondary pollution. Plasma generation system treatment can destroy the chemical bonds of the polymer, so that the dust is separated from the edge of the pole piece 7, solve the problems existing in the above two devices, and achieve an improvement in dust removal efficiency and an improvement in product yield.

[0025] It is known from common technical knowledge that the present invention can be implemented by other embodiments that do not deviate from its spirit or essential features. Therefore, the embodiments disclosed above are only illustrative in all respects and are not exclusive. All changes within the scope of the present invention or within the scope equivalent to the present invention are included in the present invention.

Claims

1. A non-contact electrode dust removal device, characterized in that: The invention comprises a main shell (1), a mounting groove (2) is installed on one side of the main shell (1), the main shell (1) is divided into a first mounting cavity (3), a second mounting cavity (4), a first exhaust cavity (5) and a second exhaust cavity (6) by a partition, a plasma generating system (8) for performing low-temperature plasma flame treatment on the edge of a pole piece (7) is installed in the first mounting cavity (3) of the main shell (1), an air inlet pipe (9) and an exhaust pipe (10) are installed in the mounting groove (2), the first mounting cavity (3) and the second mounting cavity (4) are connected to the air outlet port of the air inlet pipe (9), and the first exhaust cavity (5) and the second exhaust cavity (6) are connected to the air inlet port of the exhaust pipe (10).

2. A non-contact electrode dust removal device according to claim 1, characterized in that: The plasma generating system (8) comprises a plasma generator (11) symmetrically mounted on the top wall of the main housing (1) located in the first mounting cavity (3), the two plasma generators (11) being connected to each other via an air pipe (12), a nozzle (13) being provided at the bottom end of the plasma generator (11), and a lower port of the nozzle (13) being mounted in a through hole of the main housing (1) provided on the arc-shaped side wall at the lower end of the first mounting cavity (3).

3. A non-contact electrode dust removal device according to claim 1, characterized in that: An ultrasonic generator (14) is installed on the side wall of the partition located in the second installation cavity (4).

4. A non-contact electrode dust removal device according to claim 1, characterized in that: The gap distance between the bottom of the main housing (1) and the pole piece (7) is 2-4 mm.

5. The non-contact electrode dust removal device according to claim 1, characterized in that: The pole piece (7) is straightened and transported by a roller group (15), and the roller group (15) is rotatably connected to the vertical plate (16). The main shell (1) and the two sides of the installation groove (2) are connected to the vertical plate (16) by angle steel.

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