Pole piece dust removal device, equipment and system

Abstract

The utility model provides a pole piece dust removal device, equipment and system. The pole piece dust removal device comprises a dust removal main body, and the dust removal main body comprises a first positive pressure assembly which comprises a first positive pressure cavity, and a first air inlet and a first air blowing port which are communicated with the first positive pressure cavity; the negative pressure assembly comprises a negative pressure cavity, a suction opening and an air extraction opening, wherein the suction opening and the air extraction opening are communicated with the negative pressure cavity. The second positive pressure assembly comprises a second positive pressure cavity, a second air inlet and a second air blowing opening, wherein the second air inlet and the second air blowing opening are communicated with the second positive pressure cavity. The first air blowing opening and the second air blowing opening are located in the two sides of the suction opening in the first direction. The pole piece dust removal device can reduce the risk of piece suction.

Description

Technical Field

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

[0002] In the process of battery manufacturing, dust particles will have a great impact on the performance of the subsequent finished battery cells. A dust-free workshop can reduce the dust particle pollution in the manufacturing workshop, but it cannot remove the floating dust on the pole pieces or the powder dropping particles generated during the winding process. Therefore, it is necessary to perform dust removal treatment on the pole pieces. However, the existing dust removal devices are prone to the problem of sucking the pole pieces. Summary of the Utility Model

[0003] The pole piece dust removal device, equipment and system provided by this application aim to solve the problem that the existing dust removal devices are prone to the problem of sucking the pole pieces.

[0004] To solve the above technical problems, a technical solution adopted by this application is: to provide a pole piece dust removal device, which includes:

[0005] A dust removal main body, including:

[0006] A first positive pressure component, including a first positive pressure chamber, a first air inlet and a first air blowing port communicated with the first positive pressure chamber;

[0007] A negative pressure component, including a negative pressure chamber, a suction port and an air extraction port communicated with the negative pressure chamber;

[0008] A second positive pressure component, including a second positive pressure chamber, a second air inlet and a second air blowing port communicated with the second positive pressure chamber; wherein, the first air blowing port and the second air blowing port are located on both sides of the suction port along the first direction.

[0009] The above-mentioned pole piece dust removal device makes the dust removal main body include a first positive pressure component, a negative pressure component, and a second positive pressure component. The first positive pressure component includes a first positive pressure chamber, a first air inlet, and a first air blowing port that communicate with the first positive pressure chamber; the negative pressure component includes a negative pressure chamber, a suction port, and an air extraction port that communicate with the negative pressure chamber; the second positive pressure component includes a second positive pressure chamber, a second air inlet, and a second air blowing port that communicate with the second positive pressure chamber; wherein, the first air blowing port and the second air blowing port are located on both sides of the suction port along a first direction; when the pole piece passes below the dust removal main body along the first direction, positive pressure can be applied to both side edges of the pole piece along the first direction through the first air blowing port and the second air blowing port respectively to drive the pole piece away from the suction port, effectively reducing the risk of the pole piece being adsorbed by the suction port of the negative pressure component. At the same time, by making the first air blowing port and the second air blowing port be located on both sides of the suction port along the first direction, dust particles on both sides of the pole piece can be blown up by the first air blowing port and the second air blowing port, and these dust particles can move towards the suction port of the negative pressure component and be captured under the pressure difference between the first air blowing port / second air blowing port and the suction port, thereby realizing the cleaning of the pole piece and reducing the negative pressure interference of the conveying mechanism for conveying the pole piece. The first positive pressure component and the second positive pressure component of this solution reduce the risk of the pole piece being adsorbed while realizing the cleaning of the pole piece, achieving a dual effect, simplifying the structure, being beneficial to reducing the overall occupied space of the dust removal main body, and saving costs.

[0010] In one embodiment, it further includes:

[0011] A first cleaning component, including a first cleaning member, at least a part of the first cleaning member is arranged between the first air blowing port and the suction port along the first direction and is configured to clean the surface of the pole piece; and / or

[0012] A second cleaning component, including a second cleaning member, at least a part of the second cleaning member is arranged between the suction port and the second air blowing port along the first direction and is configured to clean the surface of the pole piece; wherein, the cleaning directions of the first cleaning member and the second cleaning member are opposite.

[0013] In the above solution, by making the cleaning directions of the first cleaning member and the second cleaning member opposite, when the pole piece passes below the dust removal main body along the first direction and contacts the first cleaning member and the second cleaning member, the first cleaning member and the second cleaning member can respectively clean the cutting edges on both sides of the pole piece along the first direction. Compared with the solution of using a single cleaning member to clean the cutting edge of the pole piece, the problem of a cleaning blind area existing on one side of the cutting edge of the pole piece is solved.

[0014] In one embodiment, the first cleaning member is a first brush, and the first cleaning assembly further includes a first driving member. The first driving member is connected to the first brush and is configured to drive the first brush to rotate along a second direction; the second cleaning member is a second brush, and the second cleaning assembly further includes a second driving member. The second driving member is connected to the second brush and is configured to drive the second brush to rotate along a third direction; the second direction is opposite to the third direction.

[0015] In the above solution, by making the first cleaning member and the second cleaning member be brushes respectively, when the brushes contact the surface of the pole piece, the brush filaments can penetrate into the surface or gaps of the pole piece, so as to better clean the surface of the pole piece. At the same time, due to the action of Overlap, the brush filaments of the brush are bent reversely. In this embodiment, by making the rotation directions of the first brush and the second brush opposite, the brush filaments of the two brushes are bent in two opposite directions respectively, so as to clean the cutting edges on both sides of the pole piece; moreover, this solution can make the first brush and the second brush both raise dust particles towards the suction port of the negative pressure assembly, so as to collect the dust particles through the suction port and obtain a good cleaning effect.

[0016] In one embodiment, the first brush rotates forward relative to the moving direction of the pole piece, and the rotational linear velocity of the first brush is greater than the moving velocity of the pole piece;

[0017] The second brush rotates reversely relative to the moving direction of the pole piece, and the rotational linear velocity of the second brush is greater than the moving velocity of the pole piece.

[0018] In the above solution, during the process of cleaning the pole piece, the brush filaments of the first brush are subjected to a frictional force opposite to the moving direction of the pole piece and are bent reversely (i.e., bent away from the moving direction of the pole piece), so that the raised side of the surface of the pole piece cleaned by the first brush faces the negative pressure assembly along the first direction, so that the dust particles on the surface of the pole piece raised by the first brush face the negative pressure assembly and are collected by the negative pressure assembly, thereby achieving a better cleaning effect. Similarly, during the process of cleaning the pole piece, the brush filaments of the second brush are subjected to a frictional force in the same direction as the moving direction of the pole piece and are bent forward (i.e., bent towards the moving direction of the pole piece), so that the raised side of the surface of the pole piece cleaned by the second brush faces the negative pressure assembly along the first direction, so that the dust particles on the surface of the pole piece raised by the second brush face the negative pressure assembly and are collected by the negative pressure assembly, thereby achieving a better cleaning effect.

[0019] In one embodiment of the present application, the blowing direction of the first blowing port is inclined at a first preset angle with respect to the first direction; the first preset angle is greater than 0° and less than 90°; and / or the blowing direction of the second blowing port is inclined at a second preset angle with respect to the first direction; the second preset angle is greater than 90° and less than 180°.

[0020] In the above solution, the airflow blown out from the first air blowing port and the second air blowing port can blow up the dust particles on the surface of the pole piece towards the negative pressure assembly, so that the negative pressure assembly can suck away the dust particles on the surface of the pole piece, and the cleaning effect is better.

[0021] In an embodiment of the present application, the first positive pressure assembly further includes a first static eliminator configured to ionize the airflow in the first positive pressure assembly to generate a large number of positive and negative charges; and / or the second positive pressure assembly further includes a second static eliminator configured to ionize the airflow in the second positive pressure assembly to generate a large number of positive and negative charges.

[0022] In the above solution, by making the first positive pressure assembly and / or the second positive pressure assembly further include a static eliminator, it is possible to make the first air blowing port and the second air blowing port blow out charged ion wind, thereby eliminating or reducing the static electricity on the surface of the pole piece through the charged ion wind, reducing the static adsorption of dust particles on the surface of the pole piece, and being beneficial to improving the dust removal effect and dust removal efficiency.

[0023] In an embodiment of the present application, it further includes:

[0024] A first sensor configured to sense the edge position of the pole piece passing below the first air blowing port and emit a first sensing signal;

[0025] A second sensor configured to sense the edge position of the pole piece passing below the second air blowing port and emit a second sensing signal;

[0026] A controller electrically connected to the first sensor and the second sensor respectively, and controlling the first positive pressure assembly to stop working based on the first sensing signal and controlling the second positive pressure assembly to stop working based on the second sensing signal.

[0027] In the above solution, by setting two sensors to sense whether the edge position of the pole piece passes through the first air blowing port or the second air blowing port, and when the edge of the pole piece passes through the first air blowing port, controlling the first positive pressure assembly to stop working; when the edge of the pole piece passes through the second air blowing port, controlling the second positive pressure assembly to stop working, so as to reduce the risk that the pole piece is blown up and adsorbed by the negative pressure assembly when the pole piece passes below the dust removal main body.

[0028] In an embodiment of the present application, the number of the first positive pressure assemblies is multiple, and the multiple first positive pressure assemblies are arranged at intervals along a fourth direction perpendicular to the first direction; and / or

[0029] The number of the second positive pressure assemblies is multiple, and the multiple second positive pressure assemblies are arranged at intervals along the fourth direction; and / or

[0030] The number of the negative pressure assemblies is multiple, and the multiple negative pressure assemblies are arranged at intervals along the fourth direction.

[0031] In the above solution, by making the number of the first positive pressure component and / or the second positive pressure component be multiple, the first positive pressure component and / or the second positive pressure component can process a larger area of the pole piece, thereby further reducing the risk of the pole piece being adsorbed by the negative pressure component, and at the same time improving the cleaning effect on the pole piece. In addition, by making the number of the negative pressure components be multiple, the dust particles lifted at various positions of the pole piece along the fourth direction can be respectively sucked by the multiple negative pressure components, thereby improving the cleaning effect; and reducing the risk of secondary pollution caused by the dust particles not being sucked away in time and falling back onto the surface of the pole piece again.

[0032] In an embodiment of the present application, the dust removal main body includes:

[0033] A support component;

[0034] A dust removal box body, which is arranged on the support component and defines a first positive pressure chamber, a first air blowing port, a negative pressure chamber, a suction port, an air extraction port, a second positive pressure chamber, a second air blowing port, a first accommodation chamber and a second accommodation chamber;

[0035] Wherein, the first accommodation chamber is located between the first air blowing port and the suction port along the first direction, a part of the first brush is arranged in the first accommodation chamber, and a part of the first brush is exposed out of the first accommodation chamber; the second accommodation chamber is located between the second air blowing port and the suction port along the first direction, a part of the second brush is arranged in the second accommodation chamber, and a part of the second brush is exposed out of the second accommodation chamber.

[0036] In the above solution, compared with the solution of separately arranging the first positive pressure component, the second positive pressure component and the negative pressure component independently, the integrity of the dust removal main body is better, which is convenient for storage and placement, and is beneficial to reducing the overall volume of the dust removal main body, and improving the sealing performance of the first positive pressure chamber, the second positive pressure chamber and the negative pressure chamber, thereby improving the cleaning effect on the pole piece. In addition, by arranging a part of the first brush and the second brush in the dust removal box body, while ensuring the effective contact between the first brush and the second brush and the pole piece, the overall volume of the dust removal main body can be further reduced, which is beneficial to the miniaturized production of the product.

[0037] In an embodiment of the present application, the first positive pressure component further includes a first connecting pipe, and the first connecting pipe is connected to the dust removal box body and communicated with the first air inlet; and / or

[0038] The second positive pressure component further includes a second connecting pipe, and the second connecting pipe is connected to the dust removal box body and communicated with the second air inlet.

[0039] In the above solution, by providing the first connecting pipe communicated with the first air inlet and the second connecting pipe communicated with the second air inlet, it is convenient for the first positive pressure component and the second positive pressure component to be connected to an external positive pressure source.

[0040] To solve the above technical problems, another technical solution adopted by this application is: to provide a pole piece dust removal device, which includes: the pole piece dust removal device involved above;

[0041] An external positive pressure source, which is communicated with the first air inlet and / or the second air inlet of the pole piece dust removal device;

[0042] An external negative pressure source, which is communicated with the air extraction port of the pole piece dust removal device.

[0043] To solve the above technical problems, another technical solution adopted by this application is: to provide a pole piece dust removal system, which includes: the pole piece dust removal device involved above, or the pole piece dust removal device involved above;

[0044] A conveying mechanism, which is arranged on the side where the first air blowing port and the second air blowing port of the pole piece dust removal device are located, and is configured to convey the pole piece along the first direction.

[0045] The above description is only an overview of the technical solution of this application. In order to be able to understand the technical means of this application more clearly, it can be implemented according to the content of the specification. And in order to make the above and other purposes, features and advantages of this application more obvious and understandable, the following specifically gives the specific implementation manners of this application. Description of the Drawings

[0046] By reading the detailed description of the preferred embodiments below, various other advantages and benefits will become clear to those of ordinary skill in the art. The drawings are only for the purpose of showing the preferred embodiments and are not considered to be a limitation of this application. And in all the drawings, the same reference numerals are used to represent the same components. In the drawings:

[0047] Figure 1 It is a schematic diagram of the overall structure of the pole piece dust removal device provided by an embodiment of this application;

[0048] Figure 2 For Figure 1 The front view of the shown pole piece dust removal device;

[0049] Figure 3 For Figure 1 The side view of the shown pole piece dust removal device;

[0050] Figure 4 For Figure 1 The top view of the shown pole piece dust removal device;

[0051] Figure 5 For Figure 1 A vertical sectional view of the shown pole piece dust removal device along the first direction;

[0052] Figure 6The side view of the pole piece dust removal device provided by another embodiment of the present application;

[0053] Figure 7 is Figure 6 a vertical sectional view of the pole piece dust removal device shown in the first direction.

[0054] Description of the reference numerals

[0055] 100 Pole piece dust removal device; 10 Dust removal main body; 10a Support assembly; 10b Dust removal box body; 1 First positive pressure assembly; 11 First positive pressure chamber; 12 First air inlet; 13 First air blowing port; 14 First connecting pipe; 2 Negative pressure assembly; 21 Negative pressure chamber; 22 Suction port; 23 Air extraction port; 3 Second positive pressure assembly; 31 Second positive pressure chamber; 32 Second air inlet; 33 Second air blowing port; 34 Second connecting pipe; 4 First accommodating chamber; 5 Second accommodating chamber; 20 First cleaning assembly; 201 First cleaning part; 202 First driving part; 301 Second cleaning part; 302 Second driving part; 200 Pole piece. Detailed implementation manners

[0056] The embodiments of the technical solutions of the present application will be described in detail below with reference to the drawings. The following embodiments are only used to illustrate the technical solutions of the present application more clearly, so they are only examples and cannot be used to limit the protection scope of the present application.

[0057] Unless otherwise defined, all technical and scientific terms used herein have the same meaning as commonly understood by those skilled in the technical field to which this application belongs; the terms used herein are only for the purpose of describing specific embodiments and are not intended to limit this application; the terms "including" and "having" and any variations thereof in the description of the specification and claims of this application and the above drawings are intended to cover non-exclusive inclusion.

[0058] In the description of the embodiments of this application, technical terms such as "first" and "second" are only used to distinguish different objects and cannot be understood as indicating or implying relative importance or implicitly indicating the quantity, specific order or primary-secondary relationship of the indicated technical features. In the description of the embodiments of this application, "a plurality" means more than two unless otherwise specifically defined.

[0059] Referring to "embodiment" herein means that the specific features, structures or characteristics described in connection with the embodiment may be included in at least one embodiment of this application. The phrase appears in various places in the specification does not necessarily refer to the same embodiment, nor is it an independent or alternative embodiment mutually exclusive with other embodiments. Those skilled in the art explicitly and implicitly understand that the embodiments described herein can be combined with other embodiments.

[0060] In the description of the embodiments of the present application, the term "and / or" is merely a description of the association relationship between associated objects, indicating that three relationships may exist. For example, A and / or B may represent: A exists alone, A and B exist simultaneously, and B exists alone. In addition, the character " / " in this article generally represents an "or" relationship between the associated objects before and after.

[0061] In the description of the embodiments of the present application, the term "plurality" refers to two or more (including two). Similarly, "multiple groups" refers to two or more groups (including two groups), and "multiple pieces" refers to two or more pieces (including two pieces).

[0062] In the description of the embodiments of the present application, the orientation or positional relationship indicated by technical terms such as "center", "longitudinal", "lateral", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", "axial", "radial", "circumferential", etc. is based on the orientation or positional relationship shown in the drawings. It is only for the convenience of describing the embodiments of 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 embodiments of the present application.

[0063] In the description of the embodiments of the present application, unless otherwise clearly specified and limited, technical terms such as "installation", "connection", "connection", "fixation", etc. should be understood in a broad sense. For example, it may be a fixed connection, a detachable connection, or integrated; it may also 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 or the interaction relationship between two elements. For those of ordinary skill in the art, the specific meanings of the above terms in the embodiments of the present application can be understood according to specific situations.

[0064] During the production process of the battery, the positive and negative electrode sheets are usually cleaned by means of brushes, positive pressure, negative pressure, etc. In the sheet condition, the electrode sheet is cut multiple times to form at least two opposite cutting edges, and the electrode sheet is in a tension-free state and is sucked by a vacuum chamber. However, the following problems will occur: ① Since the dust removal window of the dust removal device is relatively narrow, the problem of sucking the sheet is likely to occur; ② There is a cleaning blind area on one cutting edge of the electrode sheet, that is, it cannot be cleaned; ③ Problems such as the negative pressure of the vacuum chamber interfering with the dust removal flow field. Therefore, how to effectively improve the dust removal efficiency under this condition becomes a problem to be solved.

[0065] In the related art, generally, an air clearance design is adopted to reduce the negative pressure of the dust removal device acting on the warped area of the pole piece; however, this will cause some areas of the pole piece not to be cleaned, resulting in a low dust removal efficiency. Or, by increasing the negative pressure in the cavity of the bottom belt for transporting the pole piece, the pole piece can be firmly adsorbed by this negative pressure, thereby reducing the risk of the pole piece being sucked up by the dust removal device. However, the solution of increasing the negative pressure in the cavity of the belt to firmly adsorb the pole piece requires a separate booster device in this area, which not only increases the equipment space, but also there is no pressing mechanism for pressing the warped area of the pole piece, and it is difficult for the negative pressure in the cavity of the belt to adsorb the already warped area of the pole piece. At the same time, due to the high negative pressure in the cavity of the belt, when the belt on the lower side of the discharge side of the dust removal equipment sucks negative pressure, it will cause the dust-containing air flow on the feeding side to be driven towards the discharge side, and the dust particles are blocked by the brush and fall, resulting in secondary pollution of the pole piece.

[0066] In addition, to solve the problem of the cleaning blind area of the cutting edge, in the related art, usually, the layout direction of the pole piece is changed so that the cutting side is arranged along the length direction of the belt, thereby solving the cleaning blind area of the cutting side. However, if the layout direction of the pole piece is changed so that the cutting side is arranged along the length direction of the belt, it will greatly increase the floor space of the equipment.

[0067] Based on this, the embodiment of the present application provides a pole piece dust removal device. By setting a composite cavity of a first positive pressure component, a negative pressure component and a second positive pressure component, not only can the problem of sucking the pole piece during the pole piece cleaning process be reduced; at the same time, the warped area of the pole piece can be pressed down by the first positive pressure component and the second positive pressure component, and the negative pressure in the cavity of the belt can be compensated, reducing the interference of the flow field and the escape of dust. In addition, by combining the first cleaning member and the second cleaning member for two-way cleaning, the problem of the cleaning blind area of the single-sided cutting edge of the pole piece is solved.

[0068] The present application will be described in detail below with reference to the drawings and embodiments.

[0069] Please refer to Figures 1 to 5 , Figure 1 which is a schematic diagram of the overall structure of the pole piece dust removal device provided by an embodiment of the present application; Figure 2 is Figure 1 the front view of the pole piece dust removal device shown in Figure 3 is Figure 1 the side view of the pole piece dust removal device shown in Figure 4 is Figure 1 the top view of the pole piece dust removal device shown in Figure 5 is Figure 1A vertical sectional view of the shown pole piece dust removal device along the first direction. In this embodiment, a pole piece dust removal device 100 is provided, and the pole piece dust removal device 100 is configured to clean the surface of the pole piece 200. The pole piece dust removal device 100 includes a dust removal main body 10, and the dust removal main body 10 includes: a first positive pressure component 1, a negative pressure component 2, and a second positive pressure component 3; wherein, the first positive pressure component 1 includes a first positive pressure chamber 11, a first air inlet 12 and a first air blowing port 13 communicated with the first positive pressure chamber 11; the negative pressure component 2 includes a negative pressure chamber 21, a suction port 22 and an air extraction port 23 communicated with the negative pressure chamber 21; the second positive pressure component 3 includes a second positive pressure chamber 31, a second air inlet 32 and a second air blowing port 33 communicated with the second positive pressure chamber 31; and the first air blowing port 13 and the second air blowing port 33 are located on both sides of the suction port 22 along the first direction X.

[0070] Wherein, the first air inlet 12 is configured to be communicated with an external positive pressure source, and the external positive pressure source is configured to provide a positive pressure air flow to the first positive pressure component 1 through the first air inlet 12, and the positive pressure air flow sequentially flows through the first positive pressure chamber 11 and the first air blowing port 13 and then flows out. Wherein, the first air blowing port 13 can be a nozzle or slit with a smaller opening. The pressure range of the positive pressure air flow can be greater than 0 and less than or equal to 1.5 Kpa.

[0071] The air extraction port 23 is configured to be communicated with an external negative pressure source, and the external negative pressure source is configured to form a negative pressure in the negative pressure chamber 21 through the air extraction port 23, so as to collect dust particles through the suction port 22 communicated with the negative pressure chamber 21. Wherein, the number of the suction ports 22 can be two. One suction port 22 is arranged corresponding to the first air blowing port 13, and is used for collecting the dust particles blown by the first air blowing port 13 and the dust particles lifted on the side where the first air blowing port 13 is located; the other suction port 22 is arranged corresponding to the second air blowing port 33, and is used for collecting the dust particles blown by the second air blowing port 33 and the dust particles lifted on the side where the second air blowing port 33 is located.

[0072] In a specific embodiment, the suction port 22 corresponding to the first air blowing port 13 is arranged towards the first air blowing port 13 along the first direction X, so as to better collect the dust particles blown from the side where the first air blowing port 13 is located. The suction port 22 corresponding to the second air blowing port 33 is arranged towards the second air blowing port 33 along the first direction X, so as to better collect the dust particles blown from the side where the second air blowing port 33 is located, thereby effectively improving the cleaning effect on the surface of the pole piece 200.

[0073] The second air inlet 32 is also configured to communicate with an external positive pressure source, which is configured to supply a positive pressure air flow to the second positive pressure assembly 3 through the second air inlet 32. The positive pressure air flow entering from the second air inlet 32 sequentially flows through the second positive pressure chamber 31 and the second air blowing port 33 and then flows out. Among them, the second air blowing port 33 can also be a nozzle or slit with a relatively small opening. The pressure range of the positive pressure air flow can be greater than 0 and less than or equal to 1.5 Kpa.

[0074] Among them, the external positive pressure source communicating with the first air inlet 12 and the second air inlet 32 can be the same external positive pressure source; this simplifies the product structure and facilitates the simultaneous control of the working states of the first positive pressure assembly 1 and the second positive pressure assembly 3. Of course, the external positive pressure sources communicating with the first air inlet 12 and the second air inlet 32 can also be two independent external positive pressure sources; in this way, the working states of the first positive pressure assembly 1 and the second positive pressure assembly 3 can be controlled separately.

[0075] Among them, the first air blowing port 13 and the second air blowing port 33 are located on both sides of the suction port 22 along the first direction X, which means that at least part of the first air blowing port 13 and at least part of the second air blowing port 33 are located on both sides of the suction port 22 along the first direction X. When the pole piece dust removal device 100 is used to clean the pole piece 200, the pole piece 200 moves along the first direction X, and the two cut sides of the pole piece 200 are arranged oppositely along the first direction X.

[0076] The pole piece dust removal device 100 provided in this embodiment enables the dust removal main body 10 to include a first positive pressure assembly 1, a negative pressure assembly 2, and a second positive pressure assembly 3. The first positive pressure assembly 1 includes a first positive pressure chamber 11, a first air inlet 12, and a first air blowing port 13 that communicates with the first positive pressure chamber 11. The negative pressure assembly 2 includes a negative pressure chamber 21, a suction port 22, and an air extraction port 23 that communicate with the negative pressure chamber 21. The second positive pressure assembly 3 includes a second positive pressure chamber 31, a second air inlet 32, and a second air blowing port 33 that communicates with the second positive pressure chamber 31. Among them, by arranging the first air blowing port 13 and the second air blowing port 33 on both sides of the suction port 22 along the first direction X. When the pole piece 200 passes below the dust removal main body 10 along the first direction X, positive pressure can be applied to both side edges of the pole piece 200 along the first direction X through the first air blowing port 13 and the second air blowing port 33 respectively, so as to drive the pole piece 200 away from the suction port 22, effectively reducing the risk of the pole piece 200 being adsorbed by the suction port 22 of the negative pressure assembly 2, and facilitating the adsorption of the warped area at the edge of the pole piece 200 on the conveying mechanism. At the same time, by arranging the first air blowing port 13 and the second air blowing port 33 on both sides of the suction port 22 along the first direction X, the dust particles on both sides of the pole piece 200 can be blown up by the first air blowing port 13 and the second air blowing port 33. These dust particles can move towards the suction port 22 of the negative pressure assembly 2 and be captured under the pressure difference between the first air blowing port 13 / second air blowing port 33 and the suction port 22, thereby realizing the cleaning of the pole piece 200 and reducing the negative pressure interference of the conveying mechanism for conveying the pole piece 200. The first positive pressure assembly 1 and the second positive pressure assembly 3 of this solution reduce the risk of the pole piece 200 being adsorbed while realizing the cleaning of the pole piece 200, achieving a dual effect, simplifying the structure, facilitating the reduction of the overall occupied space of the dust removal main body 10, and saving costs.

[0077] In one embodiment, in combination with Figure 2 and Figure 5 , the pole piece dust removal device 100 further includes a first cleaning assembly 20 and / or a second cleaning assembly. The first cleaning assembly 20 includes a first cleaning member 201, and at least a part of the first cleaning member 201 is arranged between the first air blowing port 13 and the suction port 22 along the first direction X and is configured to clean the surface of the pole piece 200. The second cleaning assembly includes a second cleaning member 301, and at least a part of the second cleaning member 301 is arranged between the suction port 22 and the second air blowing port 33 along the first direction X and is configured to clean the surface of the pole piece 200. Among them, the cleaning directions of the first cleaning member 201 and the second cleaning member 301 are opposite.

[0078] Among them, the first cleaning member 201 is provided on the dust removal main body 10, and at least a part of the first cleaning member 201 protrudes from the dust removal main body 10 and is located between the first air blowing port 13 and the corresponding suction port 22 along the first direction X, and is used to contact the surface of the electrode sheet 200 to clean the surface of the electrode sheet 200 during operation. The second cleaning member 301 is also provided on the dust removal main body 10, and at least a part of the second cleaning member 301 protrudes from the dust removal main body 10 and is located between the second air blowing port 33 and the corresponding suction port 22 along the first direction X, and is used to contact the surface of the electrode sheet 200 to clean the surface of the electrode sheet 200 during operation. Among them, the greater the contact pressure between the first cleaning member 201 and the second cleaning member 301 and the surface of the electrode sheet 200, the greater the frictional force between the first cleaning member 201 and the second cleaning member 301 and the electrode sheet 200, and the greater the bending deformation of the first cleaning member 201 and the second cleaning member 301.

[0079] It should be noted that Figure 5 the electrode sheet 200 in only shows the vertical position relationship between the electrode sheet 200 and the electrode sheet dust removal device 100, and does not limit the distance; it can be understood that during the actual cleaning process, the first cleaning member 201 and the second cleaning member 301 of the electrode sheet dust removal device 100 contact the surface of the electrode sheet 200.

[0080] In some embodiments, the first cleaning member 201 cleans the surface of the electrode sheet 200 along the direction indicated by the arrow of the first direction X and cleans the cutting edge of the first side of the electrode sheet 200; the second cleaning member 301 cleans the surface of the electrode sheet 200 along the opposite direction of the arrow of the first direction X and cleans the cutting edge of the second side of the electrode sheet 200 opposite to the first side; thus, the first cleaning member 201 and the second cleaning member 301 are used to clean the cutting edges of both sides of the electrode sheet 200 respectively, so as to solve the problem of the cleaning blind area of the single-sided cutting edge of the electrode sheet 200.

[0081] In a specific embodiment, the electrode sheet dust removal device 100 may include a first cleaning assembly 20 and not include a second cleaning assembly. Or the electrode sheet dust removal device 100 may include a second cleaning assembly and not include the first cleaning assembly 20. Or the electrode sheet dust removal device 100 includes a first cleaning assembly 20 and a second cleaning assembly.

[0082] In this embodiment, by making the cleaning directions of the first cleaning member 201 and the second cleaning member 301 opposite, when the electrode sheet 200 passes below the dust removal main body 10 along the first direction X and contacts the first cleaning member 201 and the second cleaning member 301, the cutting edges of both sides of the electrode sheet 200 along the first direction X can be cleaned by the first cleaning member 201 and the second cleaning member 301 respectively. Compared with the solution of using a single cleaning member to clean the cutting edge of the electrode sheet 200, the problem of the cleaning blind area on a certain side of the cutting edge of the electrode sheet 200 is solved.

[0083] In one embodiment, in combination with Figure 2 and Figure 5 , the first cleaning member 201 is a first brush, and the first cleaning assembly 20 further includes a first driving member 202. The first driving member 202 is connected to the first brush, and the first driving member 202 is configured to drive the first brush to rotate in a second direction. The second cleaning member 301 is a second brush, and the second cleaning assembly further includes a second driving member 302. The second driving member 302 is connected to the second brush, and the second driving member 302 is configured to drive the second brush to rotate in a third direction; the second direction is opposite to the third direction.

[0084] Wherein, the first brush and the second brush respectively include a brush handle and brush filaments. The brush filaments are connected to the brush handle and are arranged in a circle along the circumferential direction of the central axis of the brush handle. The first brush is connected to the first driving member 202 through the brush handle thereof, so as to drive the brush handle to rotate in the second direction through the first driving member 202, thereby driving the brush filaments of the first brush to rotate in the second direction. Wherein, the second direction may be the clockwise direction or the counterclockwise direction with the central axis of the brush handle of the first brush as the rotation axis.

[0085] The second brush is connected to the second driving member 302 through the brush handle thereof, so as to drive the brush handle to rotate in the third direction through the second driving member 302, thereby driving the brush filaments of the second brush to rotate in the third direction. Wherein, the third direction may be the clockwise direction or the counterclockwise direction with the central axis of the brush handle of the second brush as the rotation axis. Wherein, if the first brush rotates clockwise, the second brush rotates counterclockwise; if the first brush rotates counterclockwise, the second brush rotates clockwise.

[0086] Of course, in other embodiments, the first cleaning member 201 and / or the second cleaning member 301 may further include, but are not limited to, a sponge brush, a non-woven fabric roller, etc.

[0087] The first driving member 202 and the second driving member 302 may be a motor or a pump. In some embodiments, the first driving member 202 may be disposed on one side of the first brush along a fourth direction Y; the second driving member 302 is disposed on one side of the second brush along the fourth direction Y. The fourth direction Y is perpendicular to the first direction X.

[0088] In this embodiment, the first cleaning member 201 and the second cleaning member 301 are respectively brushes. When the brushes contact the surface of the pole piece 200, the brush filaments can penetrate into the surface or gaps of the pole piece 200, so as to better clean the surface of the pole piece 200. At the same time, under the action of Overlap, the brush filaments of the brush are bent in the reverse direction. In this embodiment, by making the rotation directions of the first brush and the second brush opposite, the brush filaments of the two brushes are bent in two opposite directions respectively when contacting the surface of the pole piece 200, so as to clean the cutting edges on both sides of the pole piece 200 respectively; moreover, this solution can make the first brush and the second brush both face the suction port 22 of the negative pressure assembly 2 to raise dust particles, so as to collect the dust particles through the suction port 22 and obtain a good cleaning effect. Among them, Overlap refers to the depth that the brush filaments can penetrate into the surface or gaps of the object when the brush contacts the surface of the object to be cleaned, and this index is an important parameter to measure the cleaning ability of the brush.

[0089] In one embodiment, in combination with Figure 5 , the first brush rotates forward relative to the moving direction of the pole piece 200, and the rotational linear velocity of the first brush is greater than the moving speed of the pole piece 200. The second brush rotates in the reverse direction relative to the moving direction of the pole piece 200, and the rotational linear velocity of the second brush is greater than the moving speed of the pole piece 200.

[0090] Among them, the first brush rotates forward relative to the moving direction of the pole piece 200, which means that when the first brush rotates to contact the pole piece 200, the rotational direction corresponding to the first brush at the contact position with the pole piece 200 is the same as the moving direction of the pole piece 200. The second brush rotates in the reverse direction relative to the moving direction of the pole piece 200, which means that when the second brush rotates to contact the pole piece 200, the rotational direction corresponding to the second brush at the contact position with the pole piece 200 is opposite to the moving direction of the pole piece 200.

[0091] In a specific embodiment, the pole piece 200 moves in the direction indicated by the arrow in the first direction X, the first brush rotates counterclockwise, and the second brush rotates clockwise.

[0092] In a specific embodiment, the ratio of the rotational linear velocity of the first brush to the moving speed of the pole piece 200 can be (1.2 - 1.8):1; for example, this ratio can be 1.5:1. The ratio of the rotational linear velocity of the second brush to the moving speed of the pole piece 200 can also be (1.2 - 1.8):1; for example, this ratio can be 1.5:1.

[0093] In this embodiment, by rotating the first brush in the positive direction of the moving direction of the first brush relative to the pole piece 200, and the rotational linear velocity of the first brush is greater than the moving speed of the pole piece 200; thus, during the cleaning process of the pole piece 200, the bristles of the first brush are subjected to a frictional force opposite to the moving direction of the pole piece 200 and bend in the reverse direction (i.e., bend away from the moving direction of the pole piece 200), so that the raised side of the surface of the pole piece 200 cleaned by the first brush faces the negative pressure assembly 2 along the first direction X, thereby making the dust particles on the surface of the pole piece 200 raised by the first brush face the negative pressure assembly 2 and be collected by the negative pressure assembly 2, and further achieving a better cleaning effect. Similarly, by rotating the second brush in the reverse direction of the moving direction of the second brush relative to the pole piece 200, and the rotational linear velocity of the second brush is greater than the moving speed of the pole piece 200; in this way, during the cleaning process of the pole piece 200, the bristles of the second brush are subjected to a frictional force in the same direction as the moving direction of the pole piece 200 and bend in the positive direction (i.e., bend towards the moving direction of the pole piece 200), so that the raised side of the surface of the pole piece 200 cleaned by the second brush faces the negative pressure assembly 2 along the first direction X, thereby making the dust particles on the surface of the pole piece 200 raised by the second brush face the negative pressure assembly 2 and be collected by the negative pressure assembly 2, and further achieving a better cleaning effect.

[0094] In one embodiment, in combination with Figure 5 , the blowing direction of the first blowing port 13 is inclined at a first preset angle α with respect to the first direction X; the first preset angle α is greater than 0° and less than 90°; and / or, the blowing direction of the second blowing port 33 is inclined at a second preset angle β with respect to the first direction X; the second preset angle β is greater than 90° and less than 180°.

[0095] Among them, the first preset angle α can be greater than or equal to 10° and less than or equal to 60°; for example, the first preset angle α is 10°, 20°, 30°, 40°, 50° or 60°. The second preset angle β can be greater than or equal to 120° and less than or equal to 170°; for example, the second preset angle β is 120°, 130°, 140°, 150°, 160° or 170°.

[0096] In a specific embodiment, the blowing direction of the first blowing port 13 is inclined at a first preset angle α with respect to the first direction X. In another specific embodiment, the blowing direction of the second blowing port 33 is inclined at a second preset angle β with respect to the first direction X. In yet another specific embodiment, the blowing direction of the first blowing port 13 is inclined at a first preset angle α with respect to the first direction X; and the blowing direction of the second blowing port 33 is inclined at a second preset angle β with respect to the first direction X.

[0097] In this embodiment, the airflow blown out from the first air blowing port 13 and the second air blowing port 33 can blow the dust particles on the surface of the electrode sheet 200 towards the negative pressure assembly 2, so that the negative pressure assembly 2 can suck away the dust particles on the surface of the electrode sheet 200, and the cleaning effect is better.

[0098] In one embodiment, the first positive pressure assembly 1 further includes a first static eliminator (not shown in the figure), and the first static eliminator is configured to ionize the airflow in the first positive pressure assembly 1 to generate a large number of positive and negative charges. And / or the second positive pressure assembly 3 further includes a second static eliminator (not shown in the figure), and the second static eliminator is configured to ionize the airflow in the second positive pressure assembly 3 to generate a large number of positive and negative charges.

[0099] Among them, the static eliminator is composed of a high-voltage power generator and a discharge electrode (generally made into an ion needle). The airflow is ionized into a large number of positive and negative ions through tip high-voltage corona discharge, and then a large number of positive and negative ions are blown onto the surface of the object by the wind to neutralize the static electricity, or the static eliminator is directly placed close to the surface of the object to neutralize the static electricity.

[0100] The positive and negative charges ionized by the first static eliminator are blown onto the surface of the electrode sheet 200 through the positive pressure airflow in the first positive pressure assembly 1 to eliminate or reduce the static electricity on the surface of the electrode sheet 200. The first static eliminator can be arranged in the first positive pressure chamber 11 or at a position close to the first air blowing port 13. The positive and negative charges ionized by the second static eliminator are blown onto the surface of the electrode sheet 200 through the positive pressure airflow in the second positive pressure assembly 3 to eliminate or reduce the static electricity on the surface of the electrode sheet 200. The second static eliminator can be arranged in the second positive pressure chamber 31 or at a position close to the second air blowing port 33.

[0101] Of course, the first static eliminator can also be arranged in the corresponding external positive pressure source or at other positions where the positive pressure airflow blown out from the first air blowing port 13 can be charged. The second static eliminator can also be arranged in the corresponding external positive pressure source or at other positions where the positive pressure airflow blown out from the second air blowing port 33 can be charged.

[0102] In a specific embodiment, the first positive pressure assembly 1 further includes a first static eliminator. In another specific embodiment, the second positive pressure assembly 3 further includes a second static eliminator. In yet another specific embodiment, the first positive pressure assembly 1 further includes a first static eliminator; and the second positive pressure assembly 3 further includes a second static eliminator.

[0103] In this embodiment, by making the first positive pressure assembly 1 and / or the second positive pressure assembly 3 further include a static eliminator, it is possible to make the first air blowing port 13 and the second air blowing port 33 blow out charged ion wind, thereby eliminating or reducing the static electricity on the surface of the electrode sheet 200 through the charged ion wind, reducing the static adsorption of dust particles on the surface of the electrode sheet 200, and being beneficial to improving the dust removal effect and dust removal efficiency.

[0104] In one embodiment, the pole piece dust removal device 100 further includes a first sensor (not shown in the figure), a second sensor (not shown in the figure), and a controller (not shown in the figure). The first sensor is configured to sense the edge position of the pole piece 200 passing below the first air blowing port 13 and emit a first sensing signal. The second sensor is configured to sense the edge position of the pole piece 200 passing below the second air blowing port 33 and emit a second sensing signal. The controller is electrically connected to the first sensor and the second sensor respectively, and controls the first positive pressure assembly 1 to stop working based on the first sensing signal, and controls the second positive pressure assembly 3 to stop working based on the second sensing signal.

[0105] Wherein, the pole piece 200 has opposite first side edge and second side edge along the first direction X, and the two cut edges of the pole piece 200 are respectively arranged corresponding to the first side edge and the second side edge.

[0106] Wherein, the first sensor and / or the second sensor can be a sensor. In some specific embodiments, when the distance between one side edge of the pole piece 200 along the first direction X and the first air blowing port 13 is less than or equal to a first threshold value, the first sensor emits a first sensing signal. It can be understood that during the movement of the pole piece 200 along the first direction X, the edge of the pole piece 200 has not passed directly below the first air blowing port 13, and when the distance between the side edge of the pole piece 200 close to the first air blowing port 13 (such as the first side edge) along the first direction X and the first air blowing port 13 is less than or equal to the first threshold value, the first sensor emits a first sensing signal, and the controller controls the first positive pressure assembly 1 to stop working according to the first sensing signal; when the first side edge of the pole piece 200 passes below the first air blowing port 13 and the distance along the first direction X from the first air blowing port 13 is greater than the first threshold value, the controller controls the first positive pressure assembly 1 to turn on. Wherein, the first threshold value can be 5mm, 4mm, 3mm, etc.

[0107] Similarly, when the distance between one side edge of the pole piece 200 along the first direction X and the second air blowing port 33 is less than or equal to a second threshold value, the second sensor emits a second sensing signal. It can be understood that during the movement of the pole piece 200 along the first direction X, the edge of the pole piece 200 has not passed directly below the second air blowing port 33, and when the distance between the side edge of the pole piece 200 close to the second air blowing port 33 (such as the first side edge) along the first direction X and the second air blowing port 33 is less than or equal to the second threshold value, the second sensor emits a second sensing signal, and the controller controls the second positive pressure assembly 3 to stop working according to the second sensing signal; when the first side edge of the pole piece 200 passes below the second air blowing port 33 and the distance along the first direction X from the second air blowing port 33 is greater than the second threshold value, the controller controls the second positive pressure assembly 3 to turn on. Wherein, the second threshold value can be the same as the first threshold value; for example, the second threshold value can be 5mm, 4mm, 3mm, etc.

[0108] That is to say, when the pole piece 200 moves along the first direction X, if the distance between the edge of the pole piece 200 and the first air blowing port 13 along the first direction X is less than or equal to the first threshold value, the first positive pressure assembly 1 is controlled to close; if the distance between the edge of the pole piece 200 and the second air blowing port 33 along the first direction X is less than or equal to the second threshold value, the second positive pressure assembly 3 is controlled to close.

[0109] In some specific embodiments, the first sensor may be disposed below the dust removal main body 10. For example, the first sensor may be disposed along the first direction X on a side of the first air blowing port 13 away from the suction port 22, so as to ensure that the first positive pressure assembly 1 stops blowing the positive pressure air flow before the edge of the pole piece 200 passes through the first air blowing port 13. Among them, the first sensor may be disposed adjacent to or at an interval from the first air blowing port 13. The distance between the first sensor and the first air blowing port 13 along the first direction X may be less than 5 mm.

[0110] The second sensor may also be disposed below the dust removal main body 10 and along the first direction X on a side of the second air blowing port 33 close to the suction port 22, so as to ensure that the second positive pressure assembly 3 stops blowing the positive pressure air flow before the edge of the pole piece 200 passes through the second air blowing port 33 along the first direction X. Among them, the second sensor may be disposed adjacent to or at an interval from the second air blowing port 33. The distance between the second sensor and the second air blowing port 33 along the first direction X may be less than 5 mm.

[0111] It should be noted that the "below the first air blowing port 13" mentioned above refers to the side of the first air blowing port 13 away from the first positive pressure chamber 11 along the vertical direction Z of the dust removal main body 10. The "below the second air blowing port 33" refers to the side of the second air blowing port 33 away from the second positive pressure chamber 31 along the vertical direction Z of the dust removal main body 10. In addition, unless otherwise emphasized, the "first direction X" in the present application is taken as an example in the direction indicated by the arrow.

[0112] In this embodiment, by setting the first sensor to sense the edge position of the pole piece 200 passing below the first air blowing port 13 and sending a first sensing signal, and controlling the first positive pressure assembly 1 to stop working when the edge position of the pole piece 200 is sensed, so that when the edge of the pole piece 200 passes below the first air blowing port 13, the risk that the pole piece 200 is blown up by the first positive pressure assembly 1 and then the pole piece 200 is adsorbed by the negative pressure assembly 2 is reduced. At the same time, by setting the second sensor to sense the edge position of the pole piece 200 passing below the second air blowing port 33 and sending a second sensing signal, and controlling the second positive pressure assembly 3 to stop working when the edge position of the pole piece 200 is sensed, so that when the edge of the pole piece 200 passes below the second air blowing port 33, the risk that the pole piece 200 is blown up by the second positive pressure assembly 3 and then the pole piece 200 is adsorbed by the negative pressure assembly 2 is reduced.

[0113] In one embodiment, refer to Figure 1 , the number of the first positive pressure components 1 is multiple, and the multiple first positive pressure components 1 are arranged at intervals along a fourth direction Y perpendicular to the first direction X; and / or the number of the second positive pressure components 3 is multiple, and the multiple second positive pressure components 3 are arranged at intervals along the fourth direction Y; and / or the number of the negative pressure components 2 is multiple, and the multiple negative pressure components 2 are arranged at intervals along the fourth direction Y.

[0114] Among them, in a specific embodiment, the number of the first positive pressure components 1 is multiple, and the multiple first positive pressure components 1 are arranged at intervals along a fourth direction Y perpendicular to the first direction X. In another specific embodiment, the number of the second positive pressure components 3 is multiple, and the multiple second positive pressure components 3 are arranged at intervals along the fourth direction Y. In still another specific embodiment, the number of the negative pressure components 2 is multiple, and the multiple negative pressure components are arranged at intervals along the fourth direction Y. Of course, in other embodiments, it may also be that the number of the first positive pressure components 1 and the second positive pressure components 3 is multiple, and the number of the negative pressure components 2 is one; or, the number of one of the first positive pressure components 1 and the second positive pressure components 3 is multiple, the number of the other is one, and the number of the negative pressure components 2 is multiple. Or the number of the first positive pressure components 1, the second positive pressure components 3, and the negative pressure components 2 are all multiple.

[0115] Among them, the number of the first positive pressure components 1, the second positive pressure components 3, and the negative pressure components 2 can be specifically designed according to the dimensions of the first positive pressure components 1, the second positive pressure components 3, and the negative pressure components 2, and the dust removal main body 10 along the fourth direction Y.

[0116] In a specific embodiment, the number of the first positive pressure components 1 and the second positive pressure components 3 are four respectively, and the number of the negative pressure components 2 is three. Among them, the four first positive pressure components 1 can be arranged at equal intervals along the fourth direction Y, and the ratio of the distance between the first first positive pressure component 1 and the last first positive pressure component 1 along the fourth direction Y to the total length of the dust removal main body 10 along the fourth direction Y is greater than 0.75 and less than or equal to 1, so that when the pole piece 200 passes under the dust removal main body 10, the first positive pressure components 1 can correspond to most of the pole piece 200 along the fourth direction Y, so as to perform positive pressure treatment on most areas of the pole piece 200 along the fourth direction Y.

[0117] The four second positive pressure components 3 can be arranged at equal intervals along the fourth direction Y, and the ratio of the distance between the first second positive pressure component 3 and the last second positive pressure component 3 along the fourth direction Y to the total length of the dust removal main body 10 along the fourth direction Y is greater than 0.75 and less than or equal to 1, so that when the pole piece 200 passes under the dust removal main body 10, the second positive pressure components 3 can correspond to most of the pole piece 200 along the fourth direction Y, so as to perform positive pressure treatment on most areas of the pole piece 200 along the fourth direction Y.

[0118] The three negative pressure components 2 can be arranged at equal intervals along the fourth direction Y, and the ratio of the distance between the first negative pressure component 2 and the last negative pressure component 2 along the fourth direction Y to the total length of the dust removal main body 10 along the fourth direction Y is greater than 0.75 and less than or equal to 1, so that when the electrode sheet 200 passes under the dust removal main body 10, the negative pressure components 2 can be arranged corresponding to most of the electrode sheet 200 along the fourth direction Y, so as to perform negative pressure treatment on most areas of the electrode sheet 200 along the fourth direction Y.

[0119] In this embodiment, by making the number of the first positive pressure components 1 and / or the second positive pressure components 3 be multiple, the first positive pressure components 1 and / or the second positive pressure components 3 can process a larger area of the electrode sheet 200, thereby further reducing the risk that the electrode sheet 200 is adsorbed by the negative pressure components 2, and at the same time improving the cleaning effect on the electrode sheet 200. In addition, by making the number of the negative pressure components 2 be multiple, the dust particles lifted at each position of the electrode sheet 200 along the fourth direction Y can be respectively sucked by the multiple negative pressure components 2, thereby improving the cleaning effect; and reducing the risk of secondary pollution caused by the dust particles not being sucked away in time and falling back onto the surface of the electrode sheet 200 again.

[0120] In one embodiment, in combination with Figure 1 and Figure 5 , the dust removal main body 10 includes a support component 10a and a dust removal box body 10b. The dust removal box body 10b is arranged on the support component 10a, and the dust removal box body 10b defines a first positive pressure cavity 11, a first blowing port 13, a negative pressure cavity 21, a suction port 22, an air extraction port 23, a second positive pressure cavity 31, a second blowing port 33, a first accommodating cavity 4 and a second accommodating cavity 5. Among them, the first accommodating cavity 4 is located between the first blowing port 13 and the suction port 22 along the first direction X, a part of the first brush is arranged in the first accommodating cavity 4, and a part of the first brush is exposed out of the first accommodating cavity 4. The second accommodating cavity 5 is located between the second blowing port 33 and the suction port 22 along the first direction X, a part of the second brush is arranged in the second accommodating cavity 5, and a part of the second brush is exposed out of the second accommodating cavity 5.

[0121] The support component 10a may include two support plates and a bearing plate connected between the two support plates, and the dust removal box body 10b may be arranged on the bearing plate.

[0122] The first positive pressure cavity 11 and the second positive pressure cavity 31 are formed at positions near the edges on both sides of the dust removal box body 10b along the first direction X, and the first positive pressure cavity 11 and the second positive pressure cavity 31 extend from above the dust removal box body 10b to below the dust removal box body 10b along the vertical direction Z of the dust removal box body 10b, and are respectively communicated with the first blowing port 13 and the second blowing port 33.

[0123] The vertical cross-sections of the first accommodating chamber 4 and the second accommodating chamber 5 along the first direction X are arc-shaped, and the radial dimension of the first accommodating chamber 4 is slightly larger than the radial dimension of the first brush, so as to reduce the friction between the first brush and the inner wall surface of the first accommodating chamber 4 during the rotation process. The radial dimension of the second accommodating chamber 5 is slightly larger than the radial dimension of the second brush, so as to reduce the friction between the second brush and the inner wall surface of the second accommodating chamber 5 during the rotation process.

[0124] In this specific embodiment, the first positive pressure chamber 11 extends to the bottom of the dust removal box 10b along the circumferential direction of the first accommodating chamber 4; the second positive pressure chamber 31 extends to the bottom of the dust removal box 10b along the circumferential direction of the second accommodating chamber 5. Part of the negative pressure chamber 21 extends to the bottom of the dust removal box 10b along the circumferential direction of the first positive pressure chamber 11, and forms a suction port 22 corresponding to the first positive pressure component 1; part of the negative pressure chamber 21 extends to the bottom of the dust removal box 10b along the circumferential direction of the second positive pressure chamber 31, and forms another suction port 22 corresponding to the second positive pressure component 3.

[0125] In some specific embodiments, in combination Figure 5 The dust removal box body 10 b protrudes along the vertical direction Z toward the side away from the suction port 22 , and defines a portion of the negative pressure chamber 21 and the suction port 23 .

[0126] In this embodiment, the first positive pressure chamber 11, the first blowing port 13, the negative pressure chamber 21, the suction port 22, the suction port 23, the second positive pressure chamber 31, the second blowing port 33, the first accommodating chamber 4 and the second accommodating chamber 5 are all integrated into the same structure. Compared with the scheme in which the first positive pressure component 1, the second positive pressure component 3 and the negative pressure component 2 are independently arranged, the integrity of the dust removal body 10 is better, which is convenient for storage and storage, and is conducive to reducing the overall volume of the dust removal body 10, and improving the sealing of the first positive pressure chamber 11, the second positive pressure chamber 31 and the negative pressure chamber 21, thereby improving the cleaning effect of the electrode 200. In addition, the first brush and the second brush are arranged in the dust removal box 10b, which can ensure that the first brush and the second brush are in effective contact with the electrode 200, while further reducing the overall volume of the dust removal body 10, which is conducive to the miniaturization of the product.

[0127] In some embodiments, see Figure 6 and Figure 7 , Figure 6 A side view of a pole piece dust removal device 100 provided in another embodiment of the present application; Figure 7 for Figure 6A vertical sectional view of the shown electrode sheet dust removal device along the first direction. The first positive pressure assembly 1 further includes a first connecting pipe 14, and the first connecting pipe 14 is connected to the dust removal box body 10b and communicates with the first air inlet 12. And / or, the second positive pressure assembly 3 further includes a second connecting pipe 34, and the second connecting pipe 34 is connected to the dust removal box body 10b and communicates with the second air inlet 32.

[0128] Wherein, the first connecting pipe 14 and / or the second connecting pipe 34 can be any tubular structure capable of conveying air flow. The first connecting pipe 14 is connected to the first air inlet 12 of the dust removal box body 10b, and an external positive pressure source conveys positive pressure air flow to the first positive pressure assembly 1 through the first connecting pipe 14. The second connecting pipe 34 is connected to the second air inlet 32 of the dust removal box body 10b, and an external positive pressure source conveys positive pressure air flow to the second positive pressure assembly 3 through the second connecting pipe 34. The first connecting pipe 14 and the first air inlet 12, and / or the second connecting pipe 34 and the second air inlet 32 can be connected by means such as threaded connection or snap connection.

[0129] In a specific embodiment, the first positive pressure assembly 1 further includes a first connecting pipe 14, and the second positive pressure assembly 3 includes a second connecting pipe 34. In another specific embodiment, the first positive pressure assembly 1 includes a first connecting pipe 14, the second positive pressure assembly 3 does not include a second connecting pipe 34, and the second positive pressure assembly 3 is directly connected to an external positive pressure source through the second air inlet 32. Or, the first positive pressure assembly 1 does not include a first connecting pipe 14, the first positive pressure assembly 1 is directly connected to an external positive pressure source through the first air inlet 12; the second positive pressure assembly 3 includes a second connecting pipe 34.

[0130] In this embodiment, by providing the first connecting pipe 14 communicating with the first air inlet 12 and the second connecting pipe 34 communicating with the second air inlet 32, it is convenient for the first positive pressure assembly 1 and the second positive pressure assembly 3 to be connected to an external positive pressure source.

[0131] In an embodiment, there is also provided an electrode sheet dust removal device, which includes the electrode sheet dust removal device 100, an external positive pressure source and an external negative pressure source involved in any of the above embodiments. The specific structure and function of the electrode sheet dust removal device 100 can be referred to the relevant descriptions above. The external positive pressure source is communicated with the first air inlet 12 and / or the second air inlet 32 of the electrode sheet dust removal device 100. The external negative pressure source is communicated with the air extraction port 23 of the electrode sheet dust removal device 100.

[0132] Among them, the number of external positive pressure sources can be two. One external positive pressure source is connected to the first positive pressure component 1, and the other external positive pressure source is connected to the second positive pressure component 3. Of course, the number of external positive pressure sources can also be one. This external positive pressure source is respectively connected to the first positive pressure component 1 and the second positive pressure component 3, and different control switches can be provided on the connection path between this external positive pressure source and the first positive pressure component 1 and on the connection path with the second positive pressure component 3 to separately control the connection or disconnection between the first positive pressure component 1 and the second positive pressure component 3 and the external positive pressure source.

[0133] The external positive pressure source can provide a positive pressure air flow to the first positive pressure component 1 and / or the second positive pressure component 3. The external negative pressure source can form a negative pressure in the negative pressure component 2. In some embodiments, the electrode sheet dust removal device further includes a filtering device, and the filtering device is arranged between the external negative pressure source and the electrode sheet dust removal device 100. When dust particles are adsorbed into the negative pressure cavity 21 and enter the filtering device through the air extraction port 23, filtering is completed in the filtering device to facilitate better removal of dust and impurities. Among them, the filtering device can include a blower.

[0134] In one embodiment, there is also provided an electrode sheet dust removal system, which includes a conveying mechanism and the electrode sheet dust removal device 100 or the electrode sheet dust removal equipment involved above. The specific structure and function of the electrode sheet dust removal device 100 or the electrode sheet dust removal equipment can be referred to above. The conveying mechanism is arranged on the side where the first air blowing port 13 and the second air blowing port 33 of the electrode sheet dust removal device 100 are located, and is configured to convey the electrode sheet 200 along the first direction X.

[0135] Among them, the conveying mechanism can include a conveying member and an adsorption mechanism. The conveying member can convey and transport the electrode sheet 200. The conveying member can be a roller conveying line, a chain plate conveying line, a belt conveying line / synchronous belt conveying line, a top chain conveying line, a flexible chain plate conveying line, a double speed chain conveying line, a mesh belt conveying line, etc. The adsorption mechanism is configured to adsorb the electrode sheet 200 on the conveying member. The adsorption mechanism can adsorb the electrode sheet 200 on the conveying member by pumping negative pressure.

[0136] In this embodiment, when the electrode sheet 200 passes under the dust removal main body 10, the cavity of the conveying mechanism on the discharge side is pumped with negative pressure, and the positive pressure applied by the first positive pressure component 1 and the second positive pressure component 3 is timely compensated and connected, driving the dust-containing air flow on the discharge side to migrate along the rotation direction of the brush on the discharge side. The mainstream field direction at this position is consistent with the rotation direction of the brush, realizing the synergistic effect of blowing + lifting + suction. Among them, "blowing" refers to the positive pressure air flow blowing up the dust particles on the surface of the electrode sheet 200; "lifting" refers to the first brush or the second brush lifting the dust particles blown up by the positive pressure air flow and towards the negative pressure component 2. "Suction" refers to the negative pressure suction of dust particles by the negative pressure component 2.

[0137] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of the present application, rather than to limit them; although the present application has been described in detail with reference to the foregoing embodiments, those of ordinary skill in the art should understand that they can still modify the technical solutions described in the foregoing embodiments, or perform equivalent replacements on some or all of the technical features; and these modifications or replacements do not cause the essence of the corresponding technical solutions to deviate from the scope of the technical solutions of the various embodiments of the present application, and they should all be covered within the scope of the claims and the specification of the present application. In particular, as long as there is no structural conflict, the technical features mentioned in each embodiment can be combined in any way. The present application is not limited to the specific embodiments disclosed in the text, but includes all technical solutions falling within the scope of the claims.

Claims

1. A dust removal device for a pole piece, characterized in that: include: Dust removal body, including: A first positive pressure assembly includes a first positive pressure chamber and a first air inlet and a first air blowing port communicated with the first positive pressure chamber; A negative pressure component, comprising a negative pressure chamber and a suction port and an air extraction port connected to the negative pressure chamber; The second positive pressure component includes a second positive pressure chamber and a second air inlet and a second air blowing port connected to the second positive pressure chamber; wherein the first air blowing port and the second air blowing port are located on both sides of the suction port along the first direction.

2. The pole piece dust removal device according to claim 1, characterized in that: Also includes: A first cleaning assembly, comprising a first cleaning member, at least a portion of which is disposed between the first blowing port and the suction port along the first direction and is configured to clean the surface of the pole piece; and / or The second cleaning component includes a second cleaning member, at least part of which is arranged between the suction port and the second blowing port along the first direction and is configured to clean the surface of the pole piece; wherein the cleaning directions of the first cleaning member and the second cleaning member are opposite.

3. The pole piece dust removal device according to claim 2, characterized in that: The first cleaning member is a first brush, and the first cleaning assembly further includes a first driving member, the first driving member is connected to the first brush and is configured to drive the first brush to rotate along a second direction; The second cleaning member is a second brush, and the second cleaning assembly further includes a second driving member, which is connected to the second brush and is configured to drive the second brush to rotate along a third direction; the second direction is opposite to the third direction.

4. The pole piece dust removal device according to claim 3, characterized in that: The first brush rotates in a positive direction relative to the moving direction of the pole piece, and the rotation linear speed of the first brush is greater than the moving speed of the pole piece; The second brush rotates in the opposite direction to the moving direction of the pole piece, and the rotation linear speed of the second brush is greater than the moving speed of the pole piece.

5. The pole piece dust removal device according to any one of claims 1 to 4, characterized in that: The blowing direction of the first blowing port is inclined at a first preset angle to the first direction; the first preset angle is greater than 0° and less than 90°; and / or The blowing direction of the second blowing port is inclined at a second preset angle to the first direction; the second preset angle is greater than 90° and less than 180°.

6. The pole piece dust removal device according to any one of claims 1 to 4, characterized in that: The first positive pressure component further includes a first static eliminator, which is configured to ionize the airflow in the first positive pressure component to generate a large number of positive and negative charges; and / or The second positive pressure component further includes a second static eliminator, which is configured to ionize the airflow in the second positive pressure component to generate a large number of positive and negative charges.

7. The pole piece dust removal device according to any one of claims 1 to 4, characterized in that: Also includes: A first sensor is configured to sense the edge position of the pole piece passing under the first blowing port and send out a first sensing signal; A second sensor is configured to sense the edge position of the pole piece passing under the second blowing port and emit a second sensing signal; The controller is electrically connected to the first sensor and the second sensor respectively, and controls the first positive pressure component to stop working based on the first sensing signal, and controls the second positive pressure component to stop working based on the second sensing signal.

8. The pole piece dust removal device according to any one of claims 1 to 4, characterized in that: There are multiple first positive-pressure components, and the multiple first positive-pressure components are arranged at intervals along a fourth direction perpendicular to the first direction; and / or There are multiple second positive-pressure components, and the multiple second positive-pressure components are arranged at intervals along the fourth direction; and / or There are multiple negative pressure components, and the multiple negative pressure components are arranged at intervals along the fourth direction.

9. The pole piece dust removal device according to claim 3 or 4, characterized in that: The dust removal body comprises: Support components; A dust removal box is disposed on the support assembly and defines the first positive pressure chamber, the first air blowing port, the negative pressure chamber, the suction port, the air suction port, the second positive pressure chamber, the second air blowing port, the first accommodating chamber, and the second accommodating chamber; Among them, the first accommodating chamber is located between the first blowing port and the suction port along the first direction, part of the first brush is arranged in the first accommodating chamber, and part of the first brush is exposed in the first accommodating chamber; the second accommodating chamber is located between the second blowing port and the suction port along the first direction, part of the second brush is arranged in the second accommodating chamber, and part of the second brush is exposed in the second accommodating chamber.

10. The pole piece dust removal device according to claim 9, characterized in that: The first positive pressure assembly further includes a first connecting pipe, which is connected to the dust removal box and communicates with the first air inlet; and / or The second positive pressure assembly also includes a second connecting pipe, which is connected to the dust removal box and communicates with the second air inlet.

11. A dust removal device for a pole piece, characterized in that: include: The pole piece dust removal device according to any one of claims 1 to 10; an external positive pressure source, connected to the first air inlet and / or the second air inlet of the pole piece dust removal device; An external negative pressure source is connected to the air suction port of the pole piece dust removal device.

12. A pole piece dust removal system, characterized in that: include: The pole piece dust removal device according to any one of claims 1 to 10, or the pole piece dust removal equipment according to claim 11; The conveying mechanism is arranged on one side where the first air blowing port and the second air blowing port of the electrode piece dust removal device are located, and is configured to convey the electrode piece along the first direction.

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