Battery pole piece rolling and slicing dust removal device and battery pole piece rolling equipment

Abstract

The utility model discloses a battery pole piece rolling and slicing dust removal device and battery pole piece rolling equipment. The battery pole piece rolling, slicing and dust removing device is arranged on one side of a slicing mechanism of battery pole piece rolling equipment and comprises a dust collecting unit which is connected with a negative pressure dust collecting system and is of a U-shaped structure, at least one set of dust removing brushes driven to rotate is arranged in a U-shaped opening of the dust collecting unit, the dust removing brushes are cylindrical brushes, and the dust removing brushes are connected with the negative pressure dust collecting system. And dust removal on the surfaces of the pole pieces is carried out through contact between the peripheral surfaces / end surfaces and the upper and lower surfaces of the pole pieces to be treated. According to the rolling, slicing and dust removing device for the battery pole piece, the cleaning effect of the surface of the pole piece is enhanced by adding the rotatable soft cylindrical brush in the dust collecting unit, dust is brushed down through continuous rotation of the brush, and the dust is sucked away through negative pressure of the negative pressure dust collecting system, so that the cleaning effect of the surface of the battery pole piece is effectively improved; the problem of poor voltage drop caused by insufficient cleanliness of the surface of the pole piece is reduced, and the quality of the battery is improved.

Description

Technical Field

[0001] The utility model relates to the technical field of battery pole piece rolling equipment, in particular to a battery pole piece rolling and slicing dust removal device and a battery pole piece rolling equipment. Background Art

[0002] In the production process of secondary batteries, the surface cleanliness of the battery pole piece is a key quality control point in the production process of the battery pole piece. If there is dust on the surface of the pole piece and debris after trimming, it will greatly affect the performance and quality of the battery, and even cause safety problems. Therefore, how to make the cleaning effect of dust particles, debris and other foreign objects on the surface of the battery pole piece better and more thorough is still a big problem.

[0003] The dust suction device of the lithium-ion battery pole piece rolling and trimming mechanism disclosed in CN201466098U is located below the rolling and trimming mechanism, and a dust suction nozzle fixing frame is installed on the bracket fixed to the lower cutting knife shaft fixing frame, and a dust suction nozzle is fixed on the dust suction nozzle fixing frame, and the dust suction nozzle is communicated with the vacuum cleaner through a pipeline. However, during the dust removal process of this device, some dust cannot be completely sucked away by the dust suction device due to the large degree of contact between the pole piece and the dust. Therefore, the dust suction effect is not obvious enough, and there is a problem of insufficient cleaning degree of the pole piece surface, and the cleaning effect is not good, and the dust on the pole piece surface cannot be effectively removed.

[0004] The dust collection device of the roller scraper dust collection device disclosed in CN212216598U is located at the rolling body, and is mainly used to clean the dust attached to the rolling body during the rolling process, but it cannot clean the debris remaining after the pole piece is trimmed to a large extent, which greatly affects the electrical performance and service life of the battery. At the same time, the poor voltage drop problem caused by insufficient surface cleanliness of the pole piece also seriously affects the quality of the battery.

[0005] Therefore, new technologies are needed to solve the problem of pole piece cleaning in secondary battery rolling equipment. Utility Model Content

[0006] The utility model aims to overcome the shortcomings and defects of existing battery pole piece rolling and slicing dust removal equipment, and to provide a battery pole piece rolling and slicing dust removal device and a battery pole piece rolling equipment.

[0007] The first aspect of the utility model provides a battery pole piece rolling and slicing dust removal device, which is arranged on one side of the slicing mechanism of the battery pole piece rolling equipment, and includes a U-shaped dust collecting unit connected to a negative pressure dust collecting system, wherein at least one group of dust removal brushes driven to rotate are arranged in the U-shaped opening of the dust collecting unit, and the dust removal brush is a cylindrical brush, which contacts the upper and lower surfaces of the pole piece to be processed through the circumferential surface / end surface to remove dust from the surface of the pole piece.

[0008] Wherein, the axial direction of the dust removal brush is perpendicular / parallel to the moving direction of the pole piece.

[0009] Wherein, the dust removal brush is connected to the driving motor through a belt transmission mechanism.

[0010] Wherein, the driving motor and the belt transmission mechanism are arranged in the dust collecting unit.

[0011] The dust collecting unit comprises a first cavity and a second cavity which are arranged relatively to each other up and down, and the driving motor and the belt transmission mechanism are respectively assembled in the first cavity and the second cavity to correspondingly drive the upper brush and the lower brush of the dust removal brush.

[0012] The dust collecting unit has a dust collecting plate inside, and a plurality of dust suction holes are arranged on the dust collecting plate. The dust collecting plate is separated from the rear end of the dust collecting unit to form a dust collecting space, which is located between the first cavity and the second cavity.

[0013] Wherein, the rear end of the dust collecting unit has an opening and is connected to one end of the dust collecting pipe.

[0014] Wherein, the other end of the dust collecting pipe is connected to the inlet of the dust collector.

[0015] Wherein, the dust collector is a negative pressure dust collector.

[0016] A second aspect of the present invention provides a battery pole piece rolling device, comprising the battery pole piece rolling and slicing dust removal device described in the first aspect of the present invention.

[0017] The utility model discloses a battery pole piece crushing and slicing dust removal device, which enhances the pole piece surface cleaning effect by adding a rotatable soft cylindrical brush in the dust collecting unit. The brush continuously rotates to brush off the dust, and the dust is sucked away by the negative pressure of the negative pressure dust collecting system, thereby effectively improving the cleaning effect of the battery pole piece surface, reducing the problem of poor pressure drop caused by insufficient pole piece surface cleanliness, and is beneficial to improving the quality of the battery. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] Figure 1 The utility model is a schematic diagram of the arrangement of the battery pole piece rolling and slicing dust removal device in the battery pole piece rolling equipment.

[0019] Figure 2 It is an overall schematic diagram of a battery pole piece rolling, slicing and dust removal device according to one embodiment of the utility model.

[0020] Figure 3 It is a schematic diagram of the dust removal brush of the utility model.

[0021] Figure 4 for Figure 2 Magnified view of the dust collection unit.

[0022] Figure 5 for Figure 4 Schematic diagram of the dust collection unit after opening.

[0023] Figure 6 for Figure 2 Front view of the installation of the battery pole piece crushing and slicing dust removal device for pole piece dust removal.

[0024] Figure 7 Schematic diagram of a dust collection unit according to another embodiment of the present invention.

[0025] Figure 8 for Figure 7 Schematic diagram of the interior of the dust collection unit after it is opened.

[0026] Fig. 9 for Figure 7 The schematic diagram of the top view of the arrangement of the dust removal brushes of the dust collection unit is shown. DETAILED DESCRIPTION

[0027] The present invention is further described in detail below in conjunction with the accompanying drawings and specific embodiments. It should be understood that the specific embodiments described herein are only used to explain the present invention and are not used to limit the present invention.

[0028] The present application is to add a rotatable soft dust removal brush in the dust collection unit behind the trimming knife of the secondary battery rolling equipment to enhance the cleaning effect of the electrode surface. The dust particles brushed off by the rotatable brush, the debris cut by the cutter, the burrs and other foreign matters are promptly sucked away by the negative pressure of the dust collector, thereby achieving environmental cleaning and reducing the poor battery voltage drop, thereby effectively reducing the mixing of foreign matters on the electrode surface, improving the cleanliness of the electrode surface during the production process, and further optimizing the battery performance and product quality.

[0029] like Figures 1 to 9 As shown, the battery pole piece rolling and slicing dust removal device of the utility model embodiment is arranged on one side of the slicing mechanism of the battery pole piece rolling equipment, and includes a U-shaped dust collection unit 5 connected to the negative pressure dust collection system, and at least one group of dust removal brushes 15 driven to rotate are arranged in the U-shaped opening of the dust collection unit. The dust removal brush is a cylindrical brush, which contacts the upper and lower surfaces of the pole piece 100 to be processed through the circumferential surface / end surface to remove dust from the pole piece surface, see Figure 2 , 4 5 shows the structure of the dust collecting unit for removing dust from the surface of the electrode piece by contacting the circumferential surface with the upper and lower surfaces of the electrode piece to be processed, see Figure 7 , 8 As shown, the structure of the dust collecting unit is shown, which removes dust from the surface of the pole piece by contacting the end face with the upper and lower surfaces of the pole piece to be processed.

[0030] The dust removal brush can be a soft brush to prevent damage to the pole piece. After the trimming knife cuts the pole piece, the rotatable soft dust removal brush in the dust collection unit is driven to rotate continuously to clean the surface of the pole piece 100 that has passed the trimming knife. At the same time, due to the continuous rotation of the brush, the cleaning can be more uniform and thorough. Through the equipment of the utility model, environmental cleaning and reduction of poor battery voltage drop can be achieved, thereby improving production efficiency and product quality. In addition, the negative pressure environment formed by the negative pressure dust collection system can ensure that waste and dust are removed in a timely and effective manner, thereby improving the cleanliness of the production process and product quality.

[0031] In the above-mentioned embodiments, the dust removal brush can achieve dust removal by contacting the surface of the pole piece with its circumferential surface, or by contacting the pole piece with its end surface. When dust removal is achieved by contacting the surface of the pole piece with its circumferential surface, the axial direction of the dust removal brush is parallel to the moving direction of the pole piece. When dust removal is achieved by contacting the pole piece with its end surface, the axial direction of the dust removal brush is perpendicular to the moving direction of the pole piece.

[0032] In order to drive the dust brush to remove dust, the dust brush is connected to the drive motor through a belt transmission mechanism, and the drive motor drives the upper brush and the lower brush to rotate respectively, so as to remove dust in the process of contacting with the surface of the electrode. Referring to FIG5, a structure of a dust collection unit connected to a drive motor through a belt transmission mechanism arranged on the side of the dust collection unit is shown, and the drive shaft of the drive motor 13 drives multiple groups of dust brushes synchronously through a belt 14 and a pulley, see Figure 8 As shown, the structure of the dust collecting unit is shown, in which the transmission mechanism arranged at the upper and lower parts of the dust collecting unit is connected to the driving motor. The driving shaft 16 of the driving motor synchronously drives multiple groups of dust removal brushes through the transmission belt 17 and the synchronous pulley.

[0033] The motors that drive the dust removal brushes are located at the upper and lower positions inside the dust collection unit. The driving motors generate power to drive the dust removal brushes to rotate through the transmission shaft and the transmission system, thereby achieving the effect of multiple groups of brushes rotating at the same time. The continuously rotating brushes clean the surface of the pole piece passing through the dust collection port.

[0034] In the present application, the driving motor and the belt transmission mechanism are arranged in the dust collecting unit. Preferably, the dust collecting unit has a first cavity and a second cavity arranged opposite to each other in the upper and lower directions. The driving motor and the belt transmission mechanism are respectively installed in the first cavity and the second cavity to correspondingly drive the upper brush and the lower brush of the dust removal brush. Figure 5 As shown, in one embodiment, a first cavity 10 and a second cavity 11 are provided, and the two cavities are arranged up and down, respectively placing or accommodating corresponding motors and transmission mechanisms. An upper brush is arranged on the right side of the first cavity, and a lower cavity is arranged on the right side of the second cavity. Figure 8 As shown, in another embodiment, an upper cavity 18 and a lower cavity 19 are arranged to respectively place corresponding motors and transmission mechanisms, an upper brush is arranged below the upper cavity 18, and a lower brush is arranged above the lower cavity 19.

[0035] In the present application, the dust collecting unit has a dust collecting plate inside, and a plurality of dust suction holes are arranged on the dust collecting plate. The dust collecting plate is separated from the rear end of the dust collecting unit to form a dust collecting space, and the dust collecting space is located between the first cavity and the second cavity. To achieve this purpose, refer to Figure 4 As shown, in one embodiment, there is a dust collecting plate 8 inside the dust collecting unit, and a plurality of dust suction holes 9 are arranged on the dust collecting plate. The dust collecting plate is separated from the rear end of the dust collecting unit to form a dust collecting space 12, and the dust collecting space 12 is located between the first cavity 10 and the second cavity 11. See Figure 5. In another embodiment, there is a dust collecting space 20 corresponding to one side between the upper cavity 18 and the lower cavity 19.

[0036] The rear end of the dust collecting unit 5 has an opening and is connected to one end of a dust collecting pipe 6, and the other end of the dust collecting pipe is connected to the inlet of a dust collector 7, which is a negative pressure dust collector. The dust collector is connected to the dust collecting unit through negative pressure to absorb dust and other impurities brushed off by the brush. The design of the dust collector should take into account parameters such as wind speed and wind pressure to ensure that dust can be effectively sucked away.

[0037] The second aspect of the utility model provides a battery pole piece rolling equipment, including the battery pole piece rolling and slicing dust removal device described in the first aspect of the utility model, and the battery pole piece rolling and slicing dust removal device is arranged on one side of the trimming knife 2 of the trimming mechanism of the battery pole piece rolling equipment.

[0038] When the battery pole piece is trimmed, the unwinding roller 3 unwinds the pole piece, and the winding roller 4 rewinds the pole piece. A trimming knife 2 and a rolling roller 1 are arranged between the unwinding roller 3 and the winding roller 4 to trim and roll the pole piece. Figure 1 As shown. The trimming knife is installed on the main body of the rolling equipment to cut the pole piece. The dust collecting unit is arranged behind the trimming knife to collect the waste and dust cut off. The rotatable dust removal brush device is arranged in the dust collecting unit and is driven by the driving device to rotate continuously to clean the surface of the pole piece passing through the trimming knife. The dust collecting unit is connected to the dust collector to form a negative pressure environment, so that the waste and dust cut off can be sucked into the dust collector and processed in time.

[0039] The present application can effectively remove waste and dust attached to the surface of the pole piece by adding a rotatable cylindrical soft dust brush in the dust collection unit. At the same time, due to the continuous rotation of the dust brush, the cleaning can be made more uniform and thorough. The negative pressure environment created by the dust collector can ensure that waste and dust are removed in a timely and effective manner to achieve environmental cleaning. Due to the reduction of waste and dust and the improvement of the cleanliness of the battery production process, the problem of poor voltage drop caused by unclean pole pieces is reduced, the quality and production efficiency of the battery are improved, the goals of environmental cleaning and reduction of poor battery voltage drop are achieved, and production efficiency and product quality are improved.

[0040] The above shows and describes the basic principle and main features of the utility model and the advantages of the utility model. For those skilled in the art, it is obvious that the utility model is not limited to the details of the above exemplary embodiments, and the utility model can be implemented in other specific forms without departing from the spirit or basic features of the utility model.

[0041] Therefore, no matter from which point of view, the embodiments should be regarded as illustrative and non-restrictive, and the scope of the present invention is limited by the appended claims rather than the above description, and it is intended that all changes falling within the meaning and scope of the equivalent elements of the claims are included in the present invention.

[0042] In addition, it should be understood that although the present specification is described according to implementation modes, not every implementation mode contains only one independent technical solution. This description of the specification is only for the sake of clarity. Those skilled in the art should regard the specification as a whole. The technical solutions in each embodiment may also be appropriately combined to form other implementation modes that can be understood by those skilled in the art.

Claims

1. Battery pole piece rolling and slicing dust removal device, characterized in that: It is arranged on one side of the slicing mechanism of the battery electrode rolling equipment, and includes a U-shaped dust collecting unit connected to the negative pressure dust collecting system. At least one group of dust removal brushes driven to rotate are arranged in the U-shaped opening of the dust collecting unit. The dust removal brush is a cylindrical brush, which contacts the upper and lower surfaces of the electrode to be processed through the circumferential surface / end surface to remove dust from the surface of the electrode.

2. The battery pole piece rolling and slicing dust removal device according to claim 1 is characterized in that: The axial direction of the dust removal brush is perpendicular / parallel to the moving direction of the pole piece.

3. The battery pole piece rolling and slicing dust removal device according to claim 1 is characterized in that: The dust removal brush is connected to a driving motor via a belt transmission mechanism.

4. The battery pole piece rolling and slicing dust removal device according to claim 3 is characterized in that: The driving motor and the belt transmission mechanism are arranged in the dust collecting unit.

5. The battery pole piece rolling and slicing dust removal device according to claim 4, characterized in that: The dust collecting unit comprises a first cavity and a second cavity which are arranged opposite to each other up and down. The driving motor and the belt transmission mechanism are respectively assembled in the first cavity and the second cavity to correspondingly drive the upper brush and the lower brush of the dust removal brush.

6. The battery pole piece rolling and slicing dust removal device according to claim 5, characterized in that: The dust collecting unit has a dust collecting plate inside, and a plurality of dust suction holes are arranged on the dust collecting plate. The dust collecting plate is separated from the rear end of the dust collecting unit to form a dust collecting space, and the dust collecting space is located between the first cavity and the second cavity.

7. The battery pole piece rolling and slicing dust removal device according to claim 1, characterized in that: The rear end of the dust collecting unit is provided with an opening and is connected to one end of the dust collecting pipe.

8. The battery pole piece rolling and slicing dust removal device according to claim 7, characterized in that: The other end of the dust collecting pipe is connected to the inlet of the dust collector.

9. The battery pole piece rolling and slicing dust removal device according to claim 8, characterized in that: The dust collector is a negative pressure dust collector.

10. Battery pole sheet rolling equipment, characterized in that: It comprises the battery pole piece rolling and slicing dust removal device as described in any one of claims 1-9.

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