Battery pole piece multi-section dust removal device

Abstract

The application relates to a battery pole piece multi-section dust removal device. The battery pole piece multi-section dust removal device comprises a roller, a dust suction piece and an air knife. The dust suction piece is located on one side of the roller, the dust suction piece is provided with a dust suction port, and the dust suction port faces the roller. The air knife comprises a main body and a plurality of air nozzles. The main body is connected with the air nozzles. The main body is provided with a plurality of air outlets. The air outlets are arranged on one side of the main body in the axial direction of the roller. The air outlets correspond to the air nozzles one by one. The air outlets and the air nozzles are in communication. The scheme provided by the application can be compatible with the dust removal work of pole pieces with different widths.

Description

Technical Field

[0001] This application relates to the field of battery manufacturing technology, and in particular to a multi-stage dust removal device for battery electrodes. Background Technology

[0002] During the production of battery electrodes, the electrodes need to be cut into the shape of tabs. This cutting process generates dust, which easily adheres to the electrodes. Therefore, a dust removal device is needed to remove the dust from the electrodes.

[0003] In related technologies, dust removal devices typically include air knives and dust collection components. The air knife blows away the dust on the electrode sheet, and then the dust collection component sucks away the scattered dust. However, existing air knives only have a single air outlet extending along the width of the electrode sheet, and the length of the air outlet cannot be changed, which makes the air knife incompatible with electrode sheets of different widths. Utility Model Content

[0004] To solve or partially solve the problems existing in related technologies, this application provides a multi-segment dust removal device for battery electrodes, which is compatible with dust removal of electrodes of different widths.

[0005] The first aspect of this application provides a multi-stage dust removal device for battery electrode sheets, which includes a roller, a dust collection component, and an air knife; the dust collection component is located on one side of the roller, and the dust collection component has a dust collection port facing the roller; the air knife includes a main body and a plurality of air nozzles, the main body is connected to the air nozzles, the main body has a plurality of air outlets, the plurality of air outlets are spaced apart along the axial direction of the roller on the side of the main body facing the roller, the air outlets correspond one-to-one with the air nozzles, and the air outlets are connected to the air nozzles.

[0006] Furthermore, an air supply channel is provided inside the main body, the air supply channel extends toward the dust collection component, one end of the air supply channel is connected to the air outlet, and the other end of the air supply channel is connected to the air nozzle.

[0007] Furthermore, the extending direction of the air supply channel forms an angle A with the axial direction of the roller, and the angle A is 0~30°.

[0008] Furthermore, the main body has a curved surface that matches the side of the roller, the curved surface is arranged facing the side of the roller, and the air outlet is located on the curved surface.

[0009] Furthermore, the air outlet extends circumferentially along the roller.

[0010] Furthermore, the orientation of the dust suction port is the same as the axial direction of the roller.

[0011] Furthermore, the center of the suction port is on the central axis of the roller, and the distance between the central axis of the roller and the main body is less than the radius of the suction port.

[0012] Furthermore, the roller is provided with a conveyor belt area that contacts the electrode sheet, and the conveyor belt area is located between the dust suction port and one of the air outlets.

[0013] Furthermore, the multi-segment dust removal device for battery electrodes also includes a lifting mechanism, which is connected to the air knife. The lifting mechanism drives the air knife to move toward or away from the roller. Furthermore, there are multiple air nozzles and multiple air supply channels, with each air nozzle corresponding to one of the air supply channels and each air supply channel corresponding to one of the air outlets. Furthermore, the multi-stage dust removal device for battery electrodes also includes a filter, which is connected to the end of the air nozzle facing away from the main body.

[0014] The technical solution provided in this application may include the following beneficial results: By setting multiple air outlets at intervals on the side of the main body facing the roller, the operator can select the corresponding air nozzle to input gas according to the width of the electrode sheet, and then blow the gas out of the corresponding air outlet onto the electrode sheet on the roller, so that electrode sheets of different widths can be dusted by the appropriate air outlet, which satisfies the compatibility of the multi-stage dust removal device for battery electrode sheets of different widths and reduces energy consumption.

[0015] It should be understood that the above general description and the following detailed description are exemplary and explanatory only, and do not limit this application. Attached Figure Description

[0016] The above and other objects, features and advantages of this application will become more apparent from the more detailed description of exemplary embodiments thereof in conjunction with the accompanying drawings, wherein the same reference numerals generally represent the same components in the exemplary embodiments thereof.

[0017] Figure 1 This is a schematic diagram of the structure of the multi-stage dust removal device for battery electrodes shown in the embodiments of this application; Figure 2 This is another structural schematic diagram of the multi-stage dust removal device for battery electrodes shown in the embodiments of this application; Figure 3 This is a schematic diagram of the structure of the air knife shown in the embodiments of this application; Figure 4 This is a cross-sectional view of the air knife shown in the embodiment of this application.

[0018] Reference numerals: 1. Overhead roller; 2. Dust suction component; 21. Dust suction port; 3. Air knife; 31. Main body; 311. Air outlet; 312. Air supply channel; 313. Curved surface; 314. Air delivery channel; 32. Air nozzle; 4. Lifting mechanism; 41. Guide rail; 42. Slider; 43. Cylinder; 5. Base; 6. Air supply assembly; 7. Electrode. Detailed Implementation

[0019] Embodiments of this application will now be described in more detail with reference to the accompanying drawings. While embodiments of this application are shown in the drawings, it should be understood that this application may be implemented in various forms and should not be limited to the embodiments set forth herein. Rather, these embodiments are provided to make this application more thorough and complete, and to fully convey the scope of this application to those skilled in the art.

[0020] It should be understood that although the terms "first," "second," "third," etc., may be used in this application to describe various information, this information should not be limited to these terms. These terms are only used to distinguish information of the same type from one another. For example, without departing from the scope of this application, first information may also be referred to as second information, and similarly, second information may also be referred to as first information. Thus, a feature defined as "first" or "second" may explicitly or implicitly include one or more of that feature. In the description of this application, "multiple" means two or more, unless otherwise explicitly specified.

[0021] In the description of this application, it should be understood that the terms "length", "width", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings, and are only for the convenience of describing this application and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of this application.

[0022] Unless otherwise expressly specified and limited, the terms "installation," "connection," "linking," and "fixing," etc., should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral part; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; they can refer to the internal communication of two components or the interaction between two components. Those skilled in the art can understand the specific meaning of the above terms in this application according to the specific circumstances.

[0023] In related technologies, dust removal devices typically include an air knife and a suction unit. The air knife blows away the dust on the electrode sheet, and then the suction unit removes the scattered dust. However, existing air knives only have a single air outlet extending along the width of the electrode sheet, and the length of the air outlet cannot be changed, making the air knife incompatible with electrode sheets of different widths. To address the above problems, this application provides a multi-segment dust removal device for battery electrodes, which is compatible with dust removal of electrode sheets of different widths.

[0024] The technical solutions of the embodiments of this application are described in detail below with reference to the accompanying drawings.

[0025] See Figure 1-3 The multi-stage dust removal device for battery electrodes includes a guide roller 1, a dust collection component 2, and an air knife 3. The guide roller 1 guides the electrode 7 as it travels on the conveyor belt, allowing it to pass through the air knife 3. The dust collection component 2 is connected to the air knife 3 and is located on one side of the guide roller 1. The dust collection component 2 has a suction port 21 facing the guide roller 1. The dust collection component 2 can remove dust from the electrode 7. When the dust collection component 2 is working, under negative pressure, the dust on the electrode 7 passes through the suction port 21 and enters the dust collection component 2.

[0026] See Figure 2-4 The air knife 3 includes a main body 31 and an air nozzle 32, with the main body 31 connected to the air nozzle 32. The main body 31 has multiple air outlets 311, which are spaced apart along the axial direction of the roller 1 on the side of the main body 31 facing the roller 1. Each air outlet 311 corresponds to one air nozzle 32, and the air outlets 311 and 32 are connected. Gas can enter the main body 31 from the air nozzle 32, and then be blown from the main body 31 through the air outlets 311 onto the electrode plate 7 on the roller 1. Each air outlet 311 is independent of the others, and each air nozzle 32 is independent of the others. The operator can select some air nozzles 32 to input gas, and then blow the gas out through the corresponding air outlet 311. When it is necessary to remove the waste dust on the electrode 7, the operator can select the corresponding number of air nozzles 32 to input gas according to the width of the electrode 7, and then output the gas through the corresponding air outlet 311, so that all air outlets 311 directly facing the electrode 7 output gas, and the air outlets 311 that are offset from the electrode 7 do not output gas.

[0027] This application provides multiple air outlets 311 spaced apart on the side of the main body 31 facing the roller 1. Workers can select the corresponding air nozzle 32 to input gas according to the width of the electrode sheet 7, and then blow the gas out of the corresponding air outlet 311 onto the electrode sheet 7 on the roller 1. This allows electrode sheets 7 of different widths to be dusted by the appropriate air outlet 311, ensuring the compatibility of the multi-stage dust removal device for battery electrode sheets of different widths and reducing energy consumption.

[0028] See Figure 1-4The main body 31 has an air supply channel 312 and an air conveying channel 314. The air supply channel 312 extends toward the dust collection component 2. One end of the air supply channel 312 is connected to the air outlet 311, and the other end of the air supply channel 312 is connected to the air nozzle 32. One end of the air conveying channel 314 is connected to the air nozzle 32, and the other end of the air conveying channel 314 is connected to one end of the air supply channel 312. The end of the air supply channel 312 away from the air conveying channel 314 is connected to the air outlet 311. Gas can enter the gas delivery channel 314 from the air nozzle 32, then enter the air supply channel 312 from the air delivery channel 314, and finally pass through the air outlet 311 and be blown onto the electrode 7 on the roller 1. Since the air supply channel 312 extends toward the dust collection component 2, the air supply channel 312 can guide the gas. After the gas is guided by the air supply channel 312 and passes through the air outlet 311, the gas can blow away the waste dust on the electrode 7 and flow to the dust collection component 2, ensuring that all the waste dust on the electrode 7 can enter the dust collection component 2.

[0029] See Figure 3 and Figure 4 In some embodiments, the extension direction of the air supply channel 312 forms an angle A with the axial direction of the roller 1. The angle A is 0~30°. Within this angle range, the gas coming out of the air supply channel 312 can disperse the waste dust on the electrode 7 to the greatest extent and ensure that all the waste dust is blown towards the dust suction port 21.

[0030] See Figure 3 and Figure 4 The main body 31 has a curved surface 313 that matches the side of the roller 1. The curved surface 313 is arranged facing the side of the roller 1, and the air outlet 311 is located on the curved surface 313. The shape of the curved surface 313 matches the shape of the side of the roller 1 facing the curved surface 313. When the gas blows away the dust on the electrode 7, the curved surface 313 can cover the area where the gas and the dust come into contact, ensuring that all the dust can enter the dust inlet 21 and will not escape from the gap between the roller 1 and the curved surface 313.

[0031] See Figure 1-3 In some embodiments, the suction port 21 is oriented in the same direction as the axial direction of the roller 1. When gas is blown onto the electrode 7 on the roller 1, the gas can flow along the surface of the electrode 7 and along the axial direction of the roller 1 towards the suction port 21, so that all the dust on the electrode 7 enters the suction port 21. The suction port 21 is a circular hole, and the center of the suction port 21 is on the central axis of the roller 1. The diameter of the suction port 21 is larger than the diameter of the roller 1, and the distance between the central axis of the roller 1 and the main body 31 is smaller than the radius of the suction port 21, ensuring that after the gas disperses the dust on the electrode 7, all the dust can flow into the suction port 21 and will not stick to the outer shell of the suction component 2.

[0032] See Figure 1-3The roller 1 has a conveyor belt area that contacts the electrode 7. The conveyor belt area is located between the dust suction port 21 and one of the air outlets 311. The air outlet 311, which is furthest from the dust suction port 21, is on the side of the conveyor belt area facing away from the air outlet 311. This ensures that the air knife 3 can blow all the dust on the entire width of the electrode 7 toward the dust suction port 21, thus ensuring that the dust on the electrode 7 is cleaned.

[0033] See Figure 1-3 The multi-stage dust removal device for battery electrodes also includes a lifting mechanism 4, a base 5, and an air supply assembly 6. The air supply assembly 6 and the lifting mechanism 4 are mounted on the base 5. The air supply assembly 6 supplies air to the air nozzle 32 via a pipe. The lifting mechanism 4 is connected to the air knife 3, and drives the air knife 3 to move toward or away from the roller 1. In some embodiments, the lifting mechanism 4 includes a guide rail 41, a slider 42, and a cylinder 43. The guide rail 41 extends vertically, the slider 42 is mounted on the guide rail 41 and slides up and down along the guide rail 41, the cylinder 43 is connected to the slider 42, and the main body 31 is connected to the slider 42. The main body 31 is located above the roller 1, and the cylinder 43 drives the slider 42 to slide up and down, thereby driving the main body 31 to move toward or away from the roller 1. The operator can adjust the height of the main body 31 according to the thickness of the electrode 7, or raise the height of the main body 31 when maintenance of the main body 31 or the roller 1 is required. In some embodiments, the lifting mechanism 4 can be a lead screw slide module or a hydraulic cylinder.

[0034] See Figure 2-4 In some embodiments, the air outlet 311 can be elongated and extends along the circumference of the roller 1. When the gas blows from the air outlet 311 to the electrode 7 on the roller 1, the air outlet 311 extends along the circumference of the roller 1. Combined with the extension direction of the air supply channel 312, the contact area between the gas and the electrode 7 on the roller 1 can be increased, thereby ensuring that the waste dust on the electrode 7 is cleaned.

[0035] See Figure 1 and Figure 4 The multi-stage dust removal device for battery electrodes also includes a filter and an air collection block. The filter is connected to the end of the air nozzle 32 facing away from the air supply channel 312. The filter is connected to the air collection block, which is connected to multiple air nozzles 32. External equipment can supply gas to the filter, which then filters the gas before it enters the air collection block, and finally from the air collection block into the multiple air nozzles 32. The filter removes impurities from the gas, preventing them from contaminating the electrode 7.

[0036] The solution of this application has been described in detail above with reference to the accompanying drawings. In the above embodiments, the descriptions of each embodiment have different focuses; for parts not described in detail in a certain embodiment, please refer to the relevant descriptions of other embodiments. Those skilled in the art should also understand that the actions and modules involved in the specification are not necessarily essential to this application. Furthermore, it is understood that the steps in the method of this application embodiment can be adjusted, combined, and deleted according to actual needs, and the modules in the device of this application embodiment can be combined, divided, and deleted according to actual needs.

[0037] The various embodiments of this application have been described above. These descriptions are exemplary and not exhaustive, nor are they limited to the disclosed embodiments. Many modifications and variations will be apparent to those skilled in the art without departing from the scope and spirit of the described embodiments. The terminology used herein is chosen to best explain the principles, practical application, or improvement of the technology in the market, or to enable others skilled in the art to understand the embodiments disclosed herein.

Claims

1. A multi-stage dust removal device for battery electrodes, characterized in that, include: Roller pass; A dust-collecting component is located on one side of the roller, and the dust-collecting component has a dust-collecting port facing the roller. An air knife includes a main body and multiple air nozzles. The main body is connected to the air nozzles. The main body has multiple air outlets. The multiple air outlets are spaced apart along the axial direction of the roller on the side of the main body facing the roller. Each air outlet corresponds to one of the air nozzles and is connected to the air nozzle.

2. The multi-stage dust removal device for battery electrodes according to claim 1, characterized in that: An air supply channel is provided inside the main body, the air supply channel extends toward the dust collection component, one end of the air supply channel is connected to the air outlet, and the other end of the air supply channel is connected to the air nozzle.

3. The multi-stage dust removal device for battery electrodes according to claim 2, characterized in that: The extension direction of the air supply channel forms an angle A with the axial direction of the roller, and the angle A is 0~30°.

4. The multi-stage dust removal device for battery electrodes according to claim 1, characterized in that: The main body has a curved surface that matches the side of the roller, the curved surface is arranged facing the side of the roller, and the air outlet is located on the curved surface.

5. The multi-stage dust removal device for battery electrodes according to claim 4, characterized in that: The air outlet extends circumferentially along the roller.

6. The multi-stage dust removal device for battery electrodes according to claim 1, characterized in that: The suction port is oriented in the same direction as the axial direction of the roller.

7. The multi-stage dust removal device for battery electrodes according to claim 6, characterized in that: The center of the dust suction port is on the central axis of the roller, and the distance between the central axis of the roller and the main body is less than the radius of the dust suction port.

8. The multi-stage dust removal device for battery electrodes according to claim 1, characterized in that: The roller has a conveyor belt area that contacts the electrode sheet, and the conveyor belt area is located between the dust suction port and one of the air outlets.

9. The multi-stage dust removal device for battery electrodes according to claim 1, characterized in that: It also includes a lifting mechanism, which is connected to the air knife, and the lifting mechanism drives the air knife to move toward or away from the roller.

10. The multi-stage dust removal device for battery electrodes according to claim 1, characterized in that: It also includes a filter, which is connected to the end of the air nozzle facing away from the main body.

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