Brush dust removal mechanism

Abstract

The utility model discloses a brush dust removal mechanism, and relates to the technical field of lithium battery production. The brush dust removal mechanism comprises a dust box and two brush assemblies. The two groups of brush assemblies are bilaterally symmetrical and are arranged at intervals, a dust removal gap allowing a battery pole piece to penetrate through is formed between the two groups of brush assemblies, each group of brush assembly comprises a support, a side baffle, a front bearing seat, a rear bearing seat, a brush rotating shaft, a brush driving device and a dust hopper, and the side baffle is fixedly connected to the support; the front bearing seat and the rear bearing seat are fixedly connected to the two ends of the side baffles respectively, the two ends of the brush rotating shaft are arranged on the front bearing seat and the rear bearing seat in a penetrating mode respectively, the brush rotating shaft is coaxially connected with a brush roller, the brush driving device is connected with the brush rotating shaft, and the dust hopper is arranged below the brush roller; the dust box is a groove body with an upward opening. The brush dust removal mechanism can be used for effectively removing dust from the battery pole piece and effectively collecting the dust.

Description

Technical Field

[0001] The utility model relates to the technical field of lithium battery production, in particular to a brush dust removal mechanism for lithium battery electrode sheets. Background Art

[0002] The lithium battery electrode sheet is an important part of the lithium battery. As the positive and negative electrodes of the battery, it plays a key role in the charging and discharging process of the battery. During the production process of the positive and negative electrode sheets of the lithium battery, it is necessary to remove powder and dust from the positive and negative electrode sheets of the lithium battery. Otherwise, the dust on the surface of the electrode sheet enters the next process, which will cause problems such as piercing the diaphragm, affecting the battery life. At present, in the process of removing powder and dust from the positive and negative electrode sheets of the lithium battery, a brush is usually used to remove dust from the surface of the electrode sheet. However, if the dust brushed off by the brush cannot be effectively collected, the dust will float in the battery production environment and easily cause secondary pollution to the surface of the battery electrode sheet. Summary of the Utility Model

[0003] The technical problem to be solved by the utility model is to provide a brush dust removal mechanism that can effectively remove dust from the battery electrode sheet and effectively collect the dust.

[0004] To solve the above technical problems, the utility model adopts the following technical solutions:

[0005] A brush dust removal mechanism includes two groups of brush assemblies and a dust box arranged below the two groups of brush assemblies; the two groups of brush assemblies are symmetrically arranged left and right and spaced apart, and a dust removal gap for the battery electrode sheet to pass through is formed between the two groups of brush assemblies. Each brush assembly includes a support, side baffles, a front bearing seat, a rear bearing seat, a brush rotating shaft, a brush driving device and a dust hopper. The side baffles are fixedly connected to the support, the front bearing seat and the rear bearing seat are respectively fixedly connected to the two ends of the side baffles, both ends of the brush rotating shaft are respectively inserted into the front bearing seat and the rear bearing seat, and a brush roller is coaxially connected to the brush rotating shaft. The brush driving device is connected to the brush rotating shaft and is used to drive the brush roller to rotate to remove dust from the surface of the battery electrode sheet. The dust hopper is arranged below the brush roller and is used to collect the dust brushed off by the brush roller; the dust box is a trough with an upward opening and is used to collect a small amount of dust falling from the dust removal gap.

[0006] In some embodiments, a bottom plate is fixedly connected between the bottoms of the side baffles, the front bearing seat and the rear bearing seat; the dust hopper is installed on the bottom plate, and a negative pressure suction pipeline is arranged on the dust hopper. The negative pressure suction pipeline is connected to a negative pressure fan, and the negative pressure fan is used to suck away the collected dust.

[0007] In at least one embodiment, two symmetrically arranged guiding sheets are arranged below the dust removal gap. The guiding sheets are fixedly connected to the bottom of the bottom plate and are curved outward in an arc shape. The guiding sheets are used to guide the dust falling from the dust removal gap into the dust box.

[0008] Compared with the prior art, the utility model at least achieves the following beneficial effects:

[0009] The utility model is provided with two groups of brush assemblies, and a dust removal gap is formed between the two groups of brush assemblies. When the battery electrode plate passes through the dust removal gap, the brush rollers of the two groups of brush assemblies rotate under the drive of the brush driving device, and can respectively brush and remove powder from the front and back surfaces and edges of the battery electrode plate. The dust brushed off by the brush rollers falls into the dust hopper for collection. A small amount of dust falling from the dust removal gap is guided by the guiding piece and falls into the dust box below, which can effectively remove dust from the battery electrode plate and effectively collect dust, avoiding secondary pollution of the surface of the battery electrode plate caused by dust floating in the battery production environment. BRIEF DESCRIPTION OF THE DRAWINGS

[0010] Now, one or more embodiments of the utility model will be described only by way of example with reference to the accompanying drawings, in which:

[0011] Figure 1 is a schematic structural diagram of an embodiment of the present application;

[0012] Figure 2 is Figure 1 the front view of the embodiment;

[0013] Figure 3 is Figure 1 the right view of the embodiment;

[0014] Figure 4 is Figure 1 the top view of the embodiment.

[0015] The reference numerals in the figures are: 1. Brush assembly; 2. Dust box; 3. Dust removal gap; 4. Support; 5. Side baffle; 6. Front bearing seat; 7. Rear bearing seat; 8. Brush rotating shaft; 9. Brush driving device; 10. Dust hopper; 101. Negative pressure suction pipe; 20. Brush roller; 201. Dust removal brush; 30. Bottom plate; 40. Guiding piece; 50. Coupling. DETAILED DESCRIPTION OF THE EMBODIMENTS

[0016] The following will describe the utility model in detail with reference to the exemplary embodiments in the drawings. However, it should be understood that the present application can be implemented in various different forms and should not be construed as limited to the embodiments described herein. These embodiments are provided herein to make the disclosure of the present application more complete and to fully convey the concept of the present application to those skilled in the art.

[0017] In the description of the present application, it should be understood that the orientation or positional relationship indicated by terms such as "center", "longitudinal", "transverse", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", etc. is based on the orientation or positional relationship shown in the drawings. It is only for the convenience of describing the present application and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation. Therefore, it should not be construed as a limitation to the present application. In addition, the terms "first" and "second" are only used for descriptive purposes and cannot be understood as indicating or implying relative importance or implicitly specifying the quantity of the indicated technical features. Thus, the features defined with "first" and "second" may explicitly or implicitly include one or more of such features. In the description of the present application, the meaning of "a number of" and "a plurality of" is two or more, unless otherwise specifically and clearly defined. In the present application, unless otherwise clearly specified and defined, terms such as "install", "connect", "couple", "fix", etc. should be understood in a broad sense. For example, it may be a fixed connection, a detachable connection, or an integral connection; it may be a mechanical connection or an electrical connection; it may be directly connected or indirectly connected through an intermediate medium, and it may be the communication inside two elements. For those of ordinary skill in the art, the specific meanings of the above terms in the present application can be understood according to specific circumstances. In the present application, unless otherwise clearly specified and defined, that the first feature is "above" or "below" the second feature may include the direct contact between the first and second features, or may include the situation where the first and second features are not in direct contact but in contact through other features between them. Moreover, that the first feature is "above", "over" and "on" the second feature includes that the first feature is directly above and obliquely above the second feature, or merely means that the horizontal height of the first feature is higher than that of the second feature. That the first feature is "under", "beneath" and "under" the second feature includes that the first feature is directly below and obliquely below the second feature, or merely means that the horizontal height of the first feature is lower than that of the second feature.

[0018] As Figures 1 to 4 shown, in an embodiment of the present utility model, the brush dust removal mechanism includes two groups of brush assemblies 1 that are symmetrically arranged left and right and spaced apart, and a dust box 2 disposed below the two groups of brush assemblies 1.

[0019] A dust removal gap 3 for the battery electrode sheet to pass through is formed between two groups of brush assemblies 1. Each group of brush assemblies 1 includes a support 4, side baffles 5, a front bearing block 6, a rear bearing block 7, a brush rotating shaft 8, a brush driving device 9, and a dust hopper 10. The side baffles 5 are fixedly connected to the support 4. The front bearing block 6 and the rear bearing block 7 are respectively fixedly connected to both ends of the side baffles 5. Both ends of the brush rotating shaft 8 are respectively inserted into the front bearing block 6 and the rear bearing block 7, and a brush roller 20 is coaxially connected to the brush rotating shaft 8. A number of dust removal bristles 201 made of antistatic material are evenly distributed on the outer wall of the brush roller 20. The brush driving device 9 is connected to the brush rotating shaft 8 and is used to drive the brush roller 20 to rotate to remove dust from the surface and edge of the battery electrode sheet. The dust hopper 10 is arranged below the brush roller 20 and is used to collect the dust brushed off by the brush roller 20. The dust box 2 is a trough with an upward opening and is used to collect a small amount of dust falling from the dust removal gap 3.

[0020] Reference Figure 2 , a bottom plate 30 is fixedly connected between the bottoms of the side baffles 5, the front bearing block 6, and the rear bearing block 7; the dust hopper 10 is installed on the bottom plate 30, the opening of the dust hopper 10 faces upward, and a negative pressure suction pipe 101 is provided on the dust hopper 10. The negative pressure suction pipe 101 is connected to a negative pressure fan. The dust brushed off by the brush falls into the dust hopper 10 and is pumped to the dust collection bucket by the negative pressure fan, preventing the brushed-off dust from spreading into the battery processing environment.

[0021] Reference Figure 2 and Figure 3 , optionally, two guiding pieces 40 symmetrically arranged left and right are provided below the dust removal gap 3. The guiding pieces 40 are fixedly connected to the bottom of the bottom plate 30 and are bent outward in an arc shape. The guiding pieces 40 can guide the tabs on the battery electrode sheet; at the same time, a small amount of dust falling through the dust removal gap 3 can also be guided by the guiding pieces 40 into the dust box 2 located below, preventing the falling small amount of dust from spreading into the battery processing environment.

[0022] Optionally, the brush driving device 9 is a stepping motor, and the brush driving device 9 is connected to the rear end of the brush rotating shaft 8 through a coupling 50. Using a stepping motor as the power for the brush roller 20 can achieve high-precision position and speed control, and has a long service life, reducing the number of times of mechanism maintenance and lowering the maintenance cost.

[0023] The working principle of the brush dust removal mechanism is as follows: a dust removal gap 3 is formed between two groups of brush assemblies 1. When the battery electrode passes through the dust removal gap 3, the brush rollers 20 of the two groups of brush assemblies 1 rotate under the drive of the brush driving device 9, and can brush and remove powder from the front and back surfaces and edges of the battery electrode respectively. The dust brushed off by the dust removal bristles 201 falls into the dust hopper 10 and is sucked away by the negative pressure fan. A small amount of dust falling from the dust removal gap 3 can also be guided by the guiding piece 40 and fall into the dust box 2 below, which can effectively remove dust from the battery electrode and effectively collect dust, avoiding secondary pollution of the surface of the battery electrode caused by dust floating in the battery production environment.

[0024] It should be understood that all of the above embodiments are exemplary rather than restrictive. Under the concept of the present invention, any modification, equivalent change and modification made to the specific embodiments described above by those skilled in the art still fall within the scope of the technical solution of the present invention.

Claims

1. A brush dust removal mechanism, characterized in that: The brush assembly comprises two groups of brush assemblies and a dust box arranged below the two groups of brush assemblies; the two groups of brush assemblies are symmetrical and arranged at intervals, and a dust removal gap for battery pole pieces to pass through is formed between the two groups of brush assemblies, and each group of brush assemblies comprises a support, a side baffle, a front bearing seat, a rear bearing seat, a brush shaft, a brush driving device and a dust hopper, the side baffle being fixedly connected to the support, the front bearing seat and the rear bearing seat being fixedly connected to the two ends of the side baffle respectively, the two ends of the brush shaft being respectively penetrated through the front bearing seat and the rear bearing seat, and a brush roller is coaxially connected to the brush shaft, the brush driving device is connected to the brush shaft, and is used for driving the brush roller to rotate so as to dust the surface of the battery pole piece, and the dust hopper is arranged below the brush roller, and is used for collecting dust brushed off by the brush roller; the dust box is a trough body with an opening upward, and is used for collecting a small amount of dust falling from the dust removal gap.

2. The brush dust removal mechanism according to claim 1, characterized in that: A bottom plate is fixedly connected between the side baffle, the front bearing seat and the bottom of the rear bearing seat; the dust hopper is installed on the bottom plate, and a negative pressure suction pipe is provided on the dust hopper, and the negative pressure suction pipe is connected to a negative pressure fan, and the negative pressure fan is used to extract the collected dust.

3. The brush dust removal mechanism according to claim 2, characterized in that: Two guide plates symmetrically arranged on the left and right are provided below the dust removal gap. The guide plates are fixedly connected to the bottom of the base plate and are bent outward in an arc shape. The guide plates are used to guide the pole ears of the battery pole plates and guide the dust falling from the dust removal gap into the dust box.

4. The brush dust removal mechanism according to claim 1, characterized in that: The brush driving device is a stepping motor, and the brush driving device is connected to the rear end of the brush rotating shaft through a coupling.

5. The brush dust removal mechanism according to claim 1, characterized in that: A plurality of dust-removing bristles made of antistatic material are evenly distributed on the outer wall of the brush roller.

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