Lithium ion battery surface dust removal device

By designing a dust removal device for the surface of lithium-ion batteries, the negative pressure suction and blower mechanism in the sealed chamber are used to clean the dust, solving the problems of dust dispersion and fallback, and achieving efficient cleaning and improved safety.

CN223862453UActive Publication Date: 2026-02-03DONGGUAN HONG DE BATTERY CO LTD
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Patent Information

Application Number
CN202423206957.X
Authority / Receiving Office
CN · China
Patent Type
Utility models(China)
Current Assignee / Owner
Filing Date
2024-12-24
Publication Date
2026-02-03
Estimated Expiration
2034-12-24

AI Technical Summary

Technical Problem

In existing lithium-ion battery surface dust removal technologies, dust can easily be dispersed into the air, polluting the working environment, harming people and machines, and may also lead to dust residue inside the battery, shortening the battery's lifespan.

Method used

A dust removal device for the surface of lithium-ion batteries is designed, including a support frame, a sealed chamber, a blower mechanism, and a negative pressure suction mechanism. The device cleans the dust on the surface of lithium-ion batteries by combining the negative pressure suction in the sealed chamber with the blower mechanism, preventing the dust from spreading and falling back.

Benefits of technology

It improves the surface cleaning efficiency of lithium-ion batteries, reduces energy consumption, prevents dust pollution, extends battery life, and protects the working environment and battery safety.

✦ Generated by Eureka AI based on patent content.

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Abstract

The utility model discloses a lithium ion battery surface dust removal device which comprises a supporting frame, a sealing bin, an air blowing mechanism, a conveying mechanism used for conveying lithium ion batteries and a negative pressure suction mechanism used for being matched with the air blowing mechanism to suck dust. The sealing bin is detachably or fixedly installed on the upper portion of the supporting frame, the conveying mechanism is installed on the supporting frame and penetrates through the sealing bin, the negative pressure suction mechanism is detachably installed on the lower portion of the supporting frame, and a plurality of first through holes or ventilation openings are formed in the supporting frame. According to the dust removal device, dust can be prevented from flying repeatedly due to the fact that dust remains on the supporting frame, dust is prevented from being spread into air, dust on the surface of the lithium ion battery can be cleaned more cleanly, the dust is prevented from falling back into the lithium ion battery to cause a certain risk, the safety of the lithium ion battery is improved, and the service life of the lithium ion battery is prolonged. And the service life of the lithium ion battery is prolonged.
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Description

Technical Field

[0001] This utility model relates to the field of battery manufacturing technology, and in particular to a dust removal device for the surface of lithium-ion batteries. Background Technology

[0002] During the production of lithium-ion batteries, it is necessary to remove dust from the battery surface. This reduces the risk of short circuits, protects the battery, and extends its lifespan.

[0003] However, most existing dust removal technologies use air guns to clean the surface of the battery. The dust removed during cleaning is dispersed into the air, polluting the working environment and posing certain hazards to both people and machines. It can even cause dust to fall into the interior of the lithium-ion battery, leading to certain risks and shortening the battery's lifespan. Utility Model Content

[0004] The technical problem to be solved by this utility model is to provide a dust removal device for the surface of lithium-ion batteries.

[0005] The technical solution adopted by this utility model to solve its technical problem is as follows: a dust removal device for the surface of a lithium-ion battery is constructed, comprising: a support frame, a sealed chamber, a blower mechanism, a conveying mechanism for conveying lithium-ion batteries, and a negative pressure suction mechanism for sucking up dust in cooperation with the blower mechanism; the sealed chamber is detachably or fixedly installed on the upper part of the support frame, the conveying mechanism is installed on the support frame and passes through the sealed chamber, the negative pressure suction mechanism is detachably installed on the lower part of the support frame, and the support frame is provided with a plurality of first through holes or vents;

[0006] The negative pressure suction mechanism includes a suction part and a connecting part. The suction part is installed below the support frame and is connected to the interior of the sealed chamber through multiple first through holes or vents. The connecting part is installed on the suction part and is connected to the negative pressure machine.

[0007] Furthermore, the suction unit includes: suction pipes and converging pipes, with a plurality of suction pipes installed on the lower part of the support frame; the converging pipe is installed on the plurality of suction pipes and connected to the plurality of suction pipes.

[0008] Furthermore, the connecting part includes a connecting pipe installed on the converging pipe, one end of the connecting pipe being connected to the converging pipe, and the other end of the connecting pipe being connected to the negative pressure machine, and the connecting pipe being a rigid or flexible pipe.

[0009] Furthermore, the blower mechanism includes a blower frame and blowers. The blower frame is installed on the upper part of the sealed chamber, and multiple blowers are installed on the blower frame and connected to the interior of the sealed chamber.

[0010] Furthermore, the sealing chamber includes a sealing cover and a sealing curtain. The sealing cover is detachably or fixedly installed on the support frame, and the sealing curtain is detachably installed on the upper part of both ends of the sealing cover. The sealing curtain is flexible.

[0011] Furthermore, the sealing curtain is transparent.

[0012] Furthermore, the conveying mechanism includes a drive roller, a driven roller, and a conveyor belt. The drive roller and the driven roller are respectively installed at both ends of the support frame, and the conveyor belt is wound between the drive roller and the driven roller.

[0013] Furthermore, the conveyor belt is provided with multiple second through holes.

[0014] Furthermore, the conveyor belt is equipped with multiple stops.

[0015] Furthermore, the conveying mechanism also includes a plurality of support rollers mounted on the support frame, the support rollers being located between the drive roller and the driven roller, supporting the middle portion of the conveyor belt.

[0016] The following are the beneficial effects of implementing this utility model:

[0017] This application utilizes a sealed chamber that can be detachably or fixedly installed on the upper part of a support frame. A conveying mechanism is mounted on the support frame and extends through the sealed chamber. A negative pressure suction mechanism is detachably installed on the lower part of the support frame. The support frame has multiple first through holes or vents. The negative pressure suction mechanism includes a suction part and a connecting part. The suction part is installed below the support frame and communicates with the interior of the sealed chamber through the multiple first through holes or vents. The connecting part is installed on the suction part and connected to the negative pressure generator. The multiple first through holes or vents on the support frame maximize the negative pressure airflow generated by the negative pressure generator and the negative pressure suction mechanism on the lithium-ion battery, reducing negative pressure airflow loss, improving the cleaning efficiency of the lithium-ion battery surface, reducing energy consumption, and preventing dust residue on the support frame from causing repeated dust re-entrainment. This prevents dust from spreading into the air, resulting in a more thorough cleaning of the lithium-ion battery surface, preventing dust from falling back into the lithium-ion battery and posing a risk, thus improving the safety and extending the lifespan of the lithium-ion battery. Attached Figure Description

[0018] To more clearly illustrate the technical solution of this utility model, the present utility model will be further described below in conjunction with the accompanying drawings and embodiments. It should be understood that the following drawings only show some embodiments of this utility model and should not be regarded as a limitation on the scope. For those skilled in the art, other related drawings can be obtained from these drawings without creative effort.

[0019] In the attached image:

[0020] Figure 1 This is a schematic diagram of the structure of a lithium-ion battery surface dust removal device according to some embodiments of this utility model;

[0021] Figure 2 This is a schematic diagram of the blower mechanism in this utility model;

[0022] Figure 3 This is a schematic diagram of the suction part in this utility model;

[0023] Figure 4 This is a schematic diagram of the conveying mechanism in this utility model.

[0024] Explanation of markings in the diagram

[0025] Support frame 1, first through hole 11, sealing chamber 2, sealing cover 21, sealing curtain 22, conveying mechanism 3, driving roller 31, driven roller 32, conveyor belt 33, second through hole 34, stop block 35, support roller 36, negative pressure suction mechanism 4, suction part 41, suction pipe 411, converging pipe 412, connecting part 42, connecting pipe 421, blower mechanism 5, blower frame 51, blower 52. Detailed Implementation

[0026] To provide a clearer understanding of the technical features, objectives, and effects of this utility model, the specific embodiments of this utility model are now described in detail with reference to the accompanying drawings. In the following description, it should be understood that the orientations or positional relationships indicated by terms such as "front," "rear," "upper," "lower," "left," "right," "longitudinal," "horizontal," "vertical," "horizontal," "top," "bottom," "inner," "outer," "head," and "tail" are based on the orientations or positional relationships shown in the accompanying drawings, and are constructed and operated in a specific orientation. They are only for the convenience of describing this technical solution and do not indicate that the device or component referred to must have a specific orientation; therefore, they should not be construed as limitations on this utility model.

[0027] It should also be noted that, unless otherwise explicitly specified and limited, terms such as "installation," "connection," "joining," "fixing," and "setting" 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. When an component is referred to as being "on" or "below" another component, the component can be located "directly" or "indirectly" on the other component, or there may be one or more intermediary components. The terms "first," "second," "third," etc., are only for the convenience of describing this technical solution and should not be construed as indicating or implying relative importance or implicitly specifying the number of indicated technical features. Therefore, features defined with "first," "second," "third," etc., may explicitly or implicitly include one or more of that feature. For those skilled in the art, the specific meaning of the above terms in this utility model can be understood according to the specific circumstances.

[0028] In the following description, specific details such as particular system structures and techniques are set forth for illustrative purposes and not for limitation, in order to provide a thorough understanding of the embodiments of the present invention. However, those skilled in the art will understand that the present invention can be implemented in other embodiments without these specific details. In other instances, detailed descriptions of well-known systems, apparatuses, circuits, and methods are omitted so as not to obscure the description of the present invention with unnecessary detail.

[0029] Please see Figures 1 to 4 A lithium-ion battery surface dust removal device according to the first embodiment of this utility model includes: a support frame 1, a sealed chamber 2, a blower mechanism 5, a conveying mechanism 3 for conveying lithium-ion batteries, and a negative pressure suction mechanism 4 for sucking dust in cooperation with the blower mechanism 5; the sealed chamber 2 is detachably or fixedly installed on the upper part of the support frame 1, the conveying mechanism 3 is installed on the support frame 1 and passes through the sealed chamber 2, and the negative pressure suction mechanism 4 is detachably installed on the lower part of the support frame 1. The support frame 1 has multiple first through holes 11 or vents; the negative pressure suction mechanism 4 includes: a suction part 41 and a connecting part 42. The suction part 41 is installed below the support frame 1 and communicates with the interior of the sealed chamber 2 through multiple first through holes 11 or vents. The connecting part 42 is installed on the suction part 41 and connected to a negative pressure machine.

[0030] In this process, the lithium-ion battery is placed on the conveying mechanism 3. When the conveying mechanism 3 is running, it moves the lithium-ion battery towards the sealed chamber 2, allowing the lithium-ion battery to pass through the sealed chamber 2. During this process, the negative pressure suction mechanism 4 and the blower mechanism 5 can operate simultaneously or separately. The blower mechanism 5 blows air downwards to remove dust from the surface of the lithium-ion battery. At the same time, the blower mechanism 5 can use the negative pressure generated by the negative pressure machine to suck up the dust remaining on the surface of the lithium-ion battery and the dust floating in the sealed chamber 2, and suck the dust onto the suction part 41. This prevents the dust from spreading into the air, thus cleaning the dust on the surface of the lithium-ion battery more thoroughly, preventing dust from falling back into the interior of the lithium-ion battery and causing certain risks, improving the safety of the lithium-ion battery, and extending the service life of the lithium-ion battery.

[0031] When the negative pressure suction mechanism 4 and the blower mechanism 5 operate simultaneously, they can clean the dust on the surface of the lithium-ion battery more thoroughly. When the blower mechanism 5 or the negative pressure suction mechanism 4 operates alone, they can clean the small amount of dust on the surface of the lithium-ion battery, reducing energy consumption and making it more environmentally friendly.

[0032] Since the entire dust removal process is completed inside the sealed chamber 2, the pollution of the working environment by flying dust is reduced, which plays a certain role in protecting the human body and the machine and extending the service life of the entire device.

[0033] This application utilizes a sealed chamber 2 that is detachably or fixedly installed on the upper part of a support frame 1. A conveying mechanism 3 is installed on the support frame 1 and extends through the sealed chamber 2. A negative pressure suction mechanism 4 is detachably installed on the lower part of the support frame 1. The support frame 1 has multiple first through holes 11 or vents. The negative pressure suction mechanism 4 includes a suction part 41 and a connecting part 42. The suction part 41 is installed below the support frame 1 and communicates with the interior of the sealed chamber 2 through the multiple first through holes 11 or vents. The connecting part 42 is installed on the suction part 41 and connected to the negative pressure generator. By using the multiple first through holes 11 or vents on the support frame 1, the negative pressure airflow generated by the negative pressure generator and the negative pressure suction mechanism 4 can be maximized on the lithium-ion battery, reducing the loss of negative pressure airflow, improving the cleaning efficiency of the lithium-ion battery surface, reducing energy consumption, and preventing dust from being repeatedly scattered due to dust residue on the support frame 1. This further protects the lithium-ion battery and avoids secondary pollution to the working environment.

[0034] The negative pressure generated by the negative pressure machine is applied to the suction unit 41 through the connecting part 42. The negative pressure transmitted to the suction unit 41 is applied to the lithium-ion battery through multiple first through holes 11 or vents on the support frame 1. The multiple first through holes 11 or vents on the support frame 1 allow dust to enter the suction unit 41, preventing dust from remaining on the support frame 1 and temporarily storing the dust in the suction unit 41. This allows for centralized collection of dust, reduces the labor intensity of subsequent cleaning personnel, and further protects the working environment.

[0035] Please see Figures 1 to 4 In some embodiments, the suction unit 41 includes a suction pipe 411 and a converging pipe 412. The plurality of suction pipes 411 are installed on the lower part of the support frame 1; the converging pipe 412 is installed on the plurality of suction pipes 411 and is connected to the plurality of suction pipes 411.

[0036] This application utilizes multiple suction pipes 411 installed at the lower part of the support frame 1; a converging pipe 412 is installed on and connected to the multiple suction pipes 411. The multiple suction pipes 411 expand the area of ​​the negative pressure airflow generated by the negative pressure unit acting on the lithium-ion battery, improving dust cleaning efficiency and reducing energy consumption. The converging pipe 412 can temporarily store the dust passing through the suction pipes 411 for subsequent centralized processing, further preventing dust pollution of the working environment and ensuring the safety of surrounding personnel and the stable operation of surrounding machinery.

[0037] Please see Figures 1 to 4 In some embodiments, the connection part 42 includes a connecting pipe 421 installed on the converging pipe 412. One end of the connecting pipe 421 is connected to the converging pipe 412, and the other end of the connecting pipe 421 is connected to the negative pressure machine. The connecting pipe 421 is a rigid or flexible pipe.

[0038] This application utilizes a connecting pipe 421 installed on the converging pipe 412. One end of the connecting pipe 421 is connected to the converging pipe 412, and the other end is connected to the negative pressure unit. The connecting pipe 421 can be rigid or flexible, and there is a certain distance between the inner bottom of the connecting pipe 421 and the converging pipe 412 to prevent dust from directly entering the connecting pipe 421, further reducing the wear of the negative pressure unit and improving the stability of the device during operation. The rigid connecting pipe 421 provides a more stable and secure connection to both the negative pressure unit and the converging pipe 412. The flexible connecting pipe 421 can be arranged according to the installation environment, and then its two ends are respectively installed on the converging pipe 412 and the negative pressure unit using clamps, thus facilitating installation and making it suitable for more installation environments and offering greater versatility.

[0039] Please see Figures 1 to 4 In some embodiments, the blower mechanism 5 includes a blower frame 51 and blowers 52. The blower frame 51 is installed on the upper part of the sealed chamber 2, and multiple blowers 52 are installed on the blower frame 51 and connected to the interior of the sealed chamber 2.

[0040] This application utilizes a blower frame 51 mounted on the upper part of the sealed chamber 2. Multiple blowers 52 are mounted on the blower frame 51 and connected to the interior of the sealed chamber 2. The blower frame 51 facilitates the simultaneous installation of multiple blowers 52 on the sealed chamber 2, making installation more convenient and labor-saving. The blower frame 51 also ensures a tighter connection between the blowers 52 and the sealed chamber 2, reducing dust leakage from gaps and improving the overall sealing performance of the device during dust cleaning. The multiple blowers 52 can be controlled independently, adjusted according to the number of lithium-ion batteries on the conveying mechanism 3, thereby rationally utilizing the downward air pressure blown by the blowers 52 and saving energy. Simultaneous operation of multiple blowers 52 expands the dust cleaning area, further improving dust cleaning efficiency.

[0041] Please see Figures 1 to 4 In some embodiments, the sealing chamber includes a sealing cover 21 and a sealing curtain 22. The sealing cover 21 is detachably or fixedly installed on the support frame 1, and the sealing curtain 22 is detachably installed on the upper part of both ends of the sealing cover 21. The sealing curtain 22 is flexible.

[0042] This application utilizes a sealing cover 21 that can be detachably or fixedly mounted on a support frame 1, and a sealing curtain 22 that can be detachably mounted on the upper part of both ends of the sealing cover 21. The sealing curtain 22 is flexible. The sealing cover 21 can shield the left and right sides and the top of the conveying mechanism 3, trapping dust inside the sealing cover 21 during dust cleaning, thereby reducing dust pollution to the surrounding environment. The sealing curtain 22, detachably mounted on the upper part of both ends of the sealing cover 21, can cover the through holes at the front and back of the sealing cover 21, further trapping dust inside the sealing cover 21 and improving the protection of surrounding personnel and machinery. The flexible sealing curtain 22 allows the lithium-ion battery to push open the sealing curtain 22 when the conveying mechanism 3 drives the lithium-ion battery through both ends of the sealing cover 21, allowing the lithium-ion battery to move between the blower mechanism 5 and the negative pressure suction mechanism 4 for dust cleaning. During the dust cleaning process, it can cover the surface of the conveying mechanism 3 as much as possible, further preventing dust from flying out of the sealing cover 21 and causing harm to the surrounding environment and personnel, thus improving safety.

[0043] Please see Figures 1 to 4 In some embodiments, the sealing curtain 22 is transparent.

[0044] This application uses a transparent sealing curtain 22, which allows operators to easily observe the cleanliness of the lithium-ion battery inside the sealing cover 21. In case of operational or cleaning problems, timely shutdown and maintenance can be performed, thereby reducing maintenance costs and improving safety.

[0045] Please see Figures 1 to 4 In some embodiments, the conveying mechanism 3 includes a drive roller 31, a driven roller 32, and a conveyor belt 33. The drive roller 31 and the driven roller 32 are respectively installed at both ends of the support frame 1, and the conveyor belt 33 is wound between the drive roller 31 and the driven roller 32.

[0046] This application uses a drive roller 31 and a driven roller 32, respectively installed at both ends of a support frame 1, with a conveyor belt 33 wound between the drive roller 31 and the driven roller 32. The drive roller 31 is connected to an external motor, which drives it to rotate forward or backward. When the drive roller 31 rotates forward, friction causes the conveyor belt 33 and the lithium-ion batteries placed on it to move backward. As the conveyor belt 33 moves backward, friction causes the driven roller 32 to rotate forward synchronously. This causes the conveyor belt 33 to carry multiple lithium-ion batteries sequentially through a blower mechanism 5 and a negative pressure suction mechanism 4 located at the top and bottom of the sealed chamber 2, respectively. This continuous dust cleaning of the lithium-ion batteries improves work efficiency. Furthermore, the drive roller 31 can repeatedly rotate forward or backward, causing the multiple lithium-ion batteries on the conveyor belt 33 to repeatedly pass through the blower mechanism 5 and the negative pressure suction mechanism 4 located at the top and bottom of the sealed chamber 2, resulting in more thorough dust cleaning of the lithium-ion batteries.

[0047] Please see Figures 1 to 4 In some embodiments, the conveyor belt 33 has a plurality of second through holes 34.

[0048] This application reduces the obstruction area of ​​the conveyor belt 33 on the lithium-ion battery by providing multiple second through holes 34 on the conveyor belt 33, allowing more negative pressure suction and downward blowing force to act on the lithium-ion battery, thereby further improving the efficiency of dust cleaning and reducing energy consumption.

[0049] Please see Figures 1 to 4 In some embodiments, the conveyor belt 33 is provided with a plurality of stops 35.

[0050] This application provides multiple stops 35 on the conveyor belt 33, which divide the conveyor belt 33 into multiple conveying areas. After the lithium-ion battery is placed in the conveying area, the stops 35 can restrict the movement of the lithium-ion battery within it, preventing collisions between batteries during the conveying process and thus improving cleaning efficiency, reducing cost losses, and improving safety when cleaning dust.

[0051] Please see Figures 1 to 4 In some embodiments, the conveying mechanism 3 further includes a plurality of support rollers 36 mounted on the support frame 1. The support rollers 36 are located between the drive roller 31 and the driven roller 32, supporting the middle part of the conveyor belt 33.

[0052] This application uses multiple support rollers 36 installed on the support frame 1. The support rollers 36 are located between the drive roller 31 and the driven roller 32 to support the middle part of the conveyor belt 33. The support rollers 36 can reduce the deformation of the conveyor belt 33 during the process of conveying lithium-ion batteries, making the conveying mechanism 3 run more smoothly, reducing the wear of the conveyor belt 33, and extending its service life.

[0053] It is understood that the above embodiments only illustrate preferred embodiments of the present utility model, and their descriptions are relatively specific and detailed, but they should not be construed as limiting the scope of the present utility model patent. It should be noted that for those skilled in the art, the above technical features can be freely combined, and several modifications and improvements can be made without departing from the concept of the present utility model, all of which fall within the protection scope of the present utility model. Therefore, all equivalent transformations and modifications made within the scope of the claims of the present utility model should fall within the coverage of the claims of the present utility model.

Claims

1. A dust removal device for the surface of a lithium-ion battery, characterized in that, include: The support frame (1), the sealed chamber (2), the blower mechanism (5), the conveying mechanism (3) for conveying lithium-ion batteries, and the negative pressure suction mechanism (4) for sucking up dust in cooperation with the blower mechanism (5); the sealed chamber (2) is detachably or fixedly installed on the upper part of the support frame (1), the conveying mechanism (3) is installed on the support frame (1) and passes through the sealed chamber (2), the negative pressure suction mechanism (4) is detachably installed on the lower part of the support frame (1), and the support frame (1) is provided with a plurality of first through holes (11) or vents; The negative pressure suction mechanism (4) includes a suction part (41) and a connecting part (42). The suction part (41) is installed below the support frame (1) and is connected to the interior of the sealed chamber (2) through a plurality of first through holes (11) or vents. The connecting part (42) is installed on the suction part (41) and is connected to the negative pressure machine.

2. The lithium-ion battery surface dust removal device according to claim 1, characterized in that, The suction unit (41) includes a suction pipe (411) and a converging pipe (412). A plurality of suction pipes (411) are installed on the lower part of the support frame (1). The converging pipe (412) is installed on the plurality of suction pipes (411) and is connected to the plurality of suction pipes (411).

3. The lithium-ion battery surface dust removal device according to claim 2, characterized in that, The connecting part (42) includes a connecting pipe (421) installed on the converging pipe (412). One end of the connecting pipe (421) is connected to the converging pipe (412), and the other end of the connecting pipe (421) is connected to the negative pressure machine. The connecting pipe (421) is a rigid or flexible pipe.

4. The lithium-ion battery surface dust removal device according to claim 1, characterized in that, The blower mechanism (5) includes a blower frame (51) and blowers (52). The blower frame (51) is installed on the upper part of the sealed chamber (2), and multiple blowers (52) are installed on the blower frame (51) and connected to the interior of the sealed chamber (2).

5. The lithium-ion battery surface dust removal device according to claim 1, characterized in that, The sealed chamber includes a sealing cover (21) and a sealing curtain (22). The sealing cover (21) is detachably or fixedly installed on the support frame (1). The sealing curtain (22) is detachably installed on the upper part of both ends of the sealing cover (21). The sealing curtain (22) is flexible.

6. The lithium-ion battery surface dust removal device according to claim 5, characterized in that, The sealing curtain (22) is transparent.

7. The lithium-ion battery surface dust removal device according to claim 2, characterized in that, The conveying mechanism (3) includes a drive roller (31), a driven roller (32) and a conveyor belt (33). The drive roller (31) and the driven roller (32) are respectively installed at both ends of the support frame (1), and the conveyor belt (33) is wound between the drive roller (31) and the driven roller (32).

8. The lithium-ion battery surface dust removal device according to claim 7, characterized in that, The conveyor belt (33) has multiple second through holes (34).

9. The lithium-ion battery surface dust removal device according to claim 7, characterized in that, The conveyor belt (33) is provided with multiple stops (35).

10. The lithium-ion battery surface dust removal device according to claim 7, characterized in that, The conveying mechanism (3) also includes a plurality of support rollers (36) mounted on the support frame (1). The support rollers (36) are located between the drive roller (31) and the driven roller (32) and support the middle part of the conveyor belt (33).