Pole piece cleaning device and pole piece production equipment

Abstract

The present application provides a pole piece cleaning device and a pole piece production device. The pole piece cleaning device includes a cleaning mechanism, and the cleaning mechanism includes a first cleaning component and a second cleaning component. The first cleaning component is arranged beside the pole piece in the thickness direction of the pole piece, and the first cleaning component includes an adsorbent and a carrier arranged on the side of the adsorbent close to the pole piece. The adsorbent is configured to utilize the adsorption force and adsorb impurities on the pole piece through the carrier, and the carrier is used to carry the impurities. The second cleaning component is arranged beside the carrier and is used to remove the impurities on the carrier. The second cleaning component of the pole piece cleaning device in the present application is arranged beside the carrier, so that the impurities on the carrier can be cleaned. When the surface of the carrier is cleaned, the cleaning of the pole piece can be better realized, thereby improving the cleaning effect on the pole piece.

Description

Technical Field

[0001] This application relates to the technical field of battery manufacturing, and relates to a pole piece cleaning device and a pole piece production equipment. Background Art

[0002] During the production process of the pole piece, impurities such as iron filings will be adsorbed on the pole piece. In order to avoid adverse effects of impurities such as iron filings on the performance of the pole piece, it is necessary to clean the surface of the pole piece. How to improve the cleaning effect on the pole piece is an urgent problem to be solved. Summary of the Invention

[0003] In view of the above problems, this application provides a pole piece cleaning device and a pole piece production equipment to improve the cleaning effect on the pole piece.

[0004] In the first aspect of this application, a pole piece cleaning device is provided, which includes a cleaning mechanism. The cleaning mechanism includes a first cleaning component and a second cleaning component. The first cleaning component is disposed beside the pole piece in the thickness direction of the pole piece, and the first cleaning component includes an adsorbent and a carrier disposed on the side of the adsorbent close to the pole piece. The adsorbent is configured to use the adsorption force and adsorb impurities on the pole piece through the carrier, and the carrier is used to carry the impurities. The second cleaning component is disposed beside the carrier and is used to remove the impurities on the carrier.

[0005] In the pole piece cleaning device of the embodiment of this application, the first cleaning component is provided with a carrier on the side of the adsorbent close to the pole piece. In this way, the adsorption force of the adsorbent will act on the impurities on the pole piece through the carrier, so that the impurities are adsorbed on the carrier. The second cleaning component of the embodiment of this application is disposed beside the carrier, so that the impurities on the carrier can be cleaned. Once the surface of the carrier is cleaned, the cleaning of the pole piece can be better achieved. Therefore, the cleaning effect on the pole piece is improved. Further, when cleaning the impurities on the pole piece in the pole piece cleaning device of the embodiment of this application, the impurities are adsorbed on the carrier instead of directly on the adsorbent. In this way, the second cleaning component can be used to clean the surface of the carrier instead of directly cleaning the surface of the adsorbent, which can avoid damage to the adsorbent caused by directly cleaning the adsorbent by the second cleaning component.

[0006] In some embodiments, the adsorbent includes a magnetic member, and the adsorbent is configured to be movably disposed relative to the carrier in the thickness direction so that the pole piece cleaning device can switch between a first state and a second state. In the first state, the adsorbent is close to the carrier so that the magnetic force of the adsorbent adsorbs impurities through the carrier; in the second state, the adsorbent is away from the carrier, and the second cleaning component is configured to work to adsorb the impurities on the carrier.

[0007] When the pole piece cleaning device according to the embodiment of the present application needs to clean the carrier using the second cleaning component, the adsorbent is controlled to move away from the carrier, which can avoid the adverse effect of the magnetic force of the adsorbent on the cleaning work of the second cleaning component and is conducive to ensuring the normal progress of the cleaning work of the second cleaning component.

[0008] In some embodiments, the carrier includes a first trough-shaped structure and is sleeved outside the adsorbent, and the adsorbent leaves or approaches the carrier through the opening of the first trough-shaped structure. The carrier according to the embodiment of the present application includes a first trough-shaped structure, so that the first trough-shaped structure forms a covering of multiple surfaces of the adsorbent, and impurities at different positions can be adsorbed on the carrier, avoiding the problem that impurities are adsorbed on the adsorbent and are difficult to clean. Moreover, the adsorbent can enter or leave the trough cavity of the carrier through the opening of the first trough-shaped structure, thereby approaching or moving away from the carrier, avoiding the adverse effect of the magnetism of the adsorbent on the cleaning action of the second cleaning component.

[0009] In some embodiments, the second cleaning component is configured to be movably arranged relative to the carrier along the width direction of the pole piece, and the second cleaning component includes a second trough-shaped structure and is sleeved outside the carrier. The negative pressure cavity of the second cleaning component according to the embodiment of the present application is set as a second trough-shaped structure, so that the second trough-shaped structure is sleeved outside the carrier, thereby realizing the all-round cleaning of the carrier. Moreover, the second trough-shaped structure is sleeved outside the carrier, and the carrier forms a guiding effect on the movement of the second cleaning component, so the stability of the movement of the second cleaning component can be improved.

[0010] In some embodiments, the carrier is made of stainless steel. The carrier is made of stainless steel to avoid corrosion of the carrier during the cleaning process of the second cleaning component.

[0011] In some embodiments, the second cleaning component includes a negative pressure cavity. The negative pressure cavity is configured to use negative pressure to suck out the impurities on the surface of the carrier. The second cleaning component of the pole piece cleaning device according to the embodiment of the present application is provided with a negative pressure cavity to suck out the impurities on the carrier by using negative pressure, so that the impurities attached to the carrier by static electricity or other reasons can be separated from the carrier under the action of negative pressure, thereby realizing a more thorough cleaning of the carrier. A more thorough cleaning of the carrier can better realize the cleaning of the pole piece, so the cleaning effect of the pole piece is improved.

[0012] In some embodiments, the second cleaning assembly further includes a squeegee disposed in the negative pressure cavity. The squeegee is movably disposed relative to the carrier to scrape off impurities adhering to the carrier. The second cleaning assembly of the embodiments of the present application scrapes off impurities adhering to the carrier by providing a squeegee. Since the squeegee is in direct contact with the carrier and scrapes off the impurities adhering to the carrier through relative movement, the cleaning efficiency is high and the cleaning effect is good, especially suitable for viscous slurries. Moreover, the squeegee of the second cleaning assembly of the embodiments of the present application is directly disposed inside the negative pressure cavity, so that the impurities scraped off by the squeegee can be directly sucked away under the negative pressure of the negative pressure cavity, thereby avoiding the impurities being adsorbed on the electrode sheet again and further improving the cleaning effect on the electrode sheet.

[0013] In some embodiments, the second cleaning assembly further includes a water spraying member having a water spraying port configured to spray water onto the carrier before the squeegee scrapes off the impurities. By first controlling the water spraying member to spray water onto the carrier to wet and soften the slurry, and then using the squeegee to scrape off the wetted slurry, the cleaning efficiency can be accelerated. Moreover, wetting the slurry first and then scraping it off reduces the scraping difficulty and avoids damage to the carrier due to too large a force of the squeegee.

[0014] In some embodiments, the carrier is configured to extend in the width direction of the electrode sheet, the second cleaning assembly is configured to be movable relative to the carrier in the width direction, the water spraying member is disposed outside the negative pressure cavity and on the downstream side of the negative pressure cavity in the moving direction of the second cleaning assembly. Disposing the water spraying member outside the negative pressure cavity can, on the one hand, prevent the water sprayed from the water spraying port from being sucked away under the negative pressure before it has time to wet the slurry, and on the other hand, prevent a large amount of water from being sucked away by the negative pressure of the negative pressure cavity and affecting the working performance of the negative pressure pump generating the negative pressure. By disposing the water spraying member on the downstream side of the negative pressure cavity, the water spraying member will naturally act on the slurry adhering to the carrier before the negative pressure cavity, without the need for logical control of the actions of the water spraying member and the negative pressure cavity, thus reducing the control difficulty.

[0015] In some embodiments, the second cleaning assembly further includes a brush disposed in the negative pressure cavity. The brush is movably disposed relative to the carrier to sweep away impurities on the carrier. The carrier is configured to extend in the width direction of the electrode sheet, the second cleaning assembly is configured to be movable relative to the carrier in the width direction, and the brush is disposed on the upstream side of the squeegee in the moving direction of the second cleaning assembly. The cleaning actions of the second cleaning assembly of the embodiments of the present application can be carried out naturally and orderly according to the positions of the respective components during the movement of the second cleaning assembly in the width direction, without the need for logical and orderly control of the respective components of the second cleaning assembly, so the control is simple.

[0016] In some embodiments, the electrode sheet cleaning device includes at least two of the cleaning mechanisms. The at least two cleaning mechanisms include a first cleaning mechanism and a second cleaning mechanism respectively disposed on two sides of the electrode sheet. In the length direction of the electrode sheet, the first cleaning mechanism and the second cleaning mechanism are arranged in a staggered manner. This enables the acting positions of the adsorption forces of the first cleaning mechanism and the second cleaning mechanism to be different in the length direction of the electrode sheet, so that the acting positions of the adsorption forces can be dispersed, thereby dispersing the forces on the electrode sheet, which is conducive to avoiding damage to the electrode sheet caused by local stress concentration.

[0017] In some embodiments, the first cleaning mechanism and the second cleaning mechanism are configured to approach or move away from each other in the thickness direction. The electrode sheet cleaning device according to the embodiments of the present application enables the first cleaning mechanism and the second cleaning mechanism to approach or move away from each other, so that when it is necessary to clean the carrier of the first cleaning component with the second cleaning component, the first cleaning mechanism and the second cleaning structure can move away from each other, thereby realizing moving away from the electrode sheet and avoiding damage to the electrode sheet caused by the cleaning action of the second cleaning component.

[0018] The second aspect of the present application provides an electrode sheet production device, including the above-mentioned electrode sheet cleaning device.

[0019] The above description is only an overview of the technical solution of the present application. In order to be able to understand the technical means of the present application more clearly, it can be implemented according to the content of the description. And in order to make the above and other objects, features and advantages of the present application more obvious and understandable, the following specifically describes the specific embodiments of the present application. Description of the Drawings

[0020] In order to more clearly illustrate the technical solutions of the embodiments of the present application, the drawings required to be used in the embodiments of the present application will be briefly introduced below. Obviously, the following described drawings are only some embodiments of the present application. For those of ordinary skill in the art, other drawings can be obtained according to the drawings without creative efforts.

[0021] Figure 1 It is a schematic structural diagram of an electrode sheet production device according to some embodiments of the present application.

[0022] Figure 2 It is a three-dimensional structural schematic diagram of an electrode sheet cleaning device according to some embodiments of the present application.

[0023] Figure 3 It is a partially enlarged structural schematic diagram of an electrode sheet cleaning device according to some embodiments of the present application.

[0024] Figure 4 It is a three-dimensional structural schematic diagram of a second cleaning component of an electrode sheet cleaning device according to some embodiments of the present application.

[0025] Figure 5It is a schematic diagram of the internal structure of the second cleaning component of the filter element cleaning device according to some embodiments of the present application.

[0026] Figure 6 It is a schematic diagram of another angle of the internal structure of the second cleaning component of the filter element cleaning device according to some embodiments of the present application.

[0027] In the drawings, the drawings are not drawn to actual scale.

[0028] 200, pole piece.

[0029] 100, cleaning mechanism.

[0030] 10, first cleaning component; 11, adsorbing member; 12, carrier; 13, first driving mechanism.

[0031] 20, second cleaning component; 21, negative pressure cavity; 22, scraper; 23, water spraying member; 231, water spraying port; 24, sweeping brush; 25, negative pressure pipe.

[0032] 300, second driving mechanism.

[0033] 500, third driving mechanism.

[0034] X, width direction; Y, thickness direction; Z, length direction. Detailed implementation manners

[0035] Unless otherwise defined, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill 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 specification and claims of this application and the above drawings are intended to cover non-exclusive inclusion.

[0036] 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 of" means two or more unless otherwise specifically defined.

[0037] Referring to "embodiments" herein means that specific features, structures or characteristics described in connection with the embodiments can be included in at least one embodiment of this application. The phrase appears in various places in the specification and 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 will explicitly and implicitly understand that the embodiments described herein can be combined with other embodiments.

[0038] 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 there can be three relationships. For example, A and / or B can represent three situations: A exists alone, A and B exist simultaneously, and B exists alone. Additionally, in this text, the character " / " generally represents an "or" relationship between the associated objects before and after.

[0039] 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).

[0040] 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 on the embodiments of the present application.

[0041] In the description of the embodiments of the present application, unless otherwise clearly specified and limited, technical terms such as "installation", "connection", "coupling", "fixation", etc. should be understood in a broad sense. For example, it can be a fixed connection, a detachable connection, or integrated; it can also be a mechanical connection or an electrical connection; it can be directly connected or indirectly connected through an intermediate medium, and it can 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 circumstances.

[0042] Currently, from the perspective of the development of the market situation, the application of batteries is becoming more and more extensive. Batteries are not only used in energy storage power systems such as hydraulic, thermal, wind, and solar power stations, but also widely used in electric transportation means such as electric bicycles, electric motorcycles, and electric vehicles, as well as in multiple fields such as aerospace.

[0043] The battery includes one or more battery cells to provide higher voltage and capacity. A battery cell is the smallest unit that makes up the battery. The battery cell includes an end cap, a housing, and an electrode assembly. The electrode assembly is the component in the battery cell where an electrochemical reaction occurs, and the housing can contain one or more electrode assemblies. The electrode assembly is formed by winding or laminating a positive electrode plate and a negative electrode plate, and a separator is usually provided between the positive electrode plate and the negative electrode plate. The portions of the positive electrode plate and the negative electrode plate having active materials constitute the main body of the electrode assembly, and the portions of the positive electrode plate and the negative electrode plate without active materials each form a tab. During the charging and discharging process of the battery, the positive active material and the negative active material react with the electrolyte, and the tabs are connected to the electrode terminals to form a current loop.

[0044] During the production process of the electrode plate, impurities such as iron filings will be adsorbed on the surface of the electrode plate, and impurities such as iron filings will have an adverse effect on the performance of the electrode plate. In the related art, a magnetic rod is used to adsorb impurities such as iron filings attached to the surface of the electrode plate, and the iron filings and other impurities are adsorbed on the surface of the magnetic rod under the action of magnetic force. If the surface of the magnetic rod cannot be better cleaned, then these impurities adsorbed on the surface of the magnetic rod will have an adverse effect on the adsorption force of the magnetic rod, thereby affecting the cleaning effect of the electrode plate.

[0045] Based on the above technical problems, through in-depth research, the present application proposes an electrode plate cleaning device. The following refers to Figures 1 to 6 to describe in detail the structures of the electrode plate cleaning device and the electrode plate production equipment according to some embodiments of the present application.

[0046] Referring to Figure 1 , the electrode plate cleaning device provided by some embodiments of the present application is used to clean the electrode plate 200. Referring to Figure 2 and Figure 3 , the electrode plate cleaning device according to some embodiments of the present application includes a cleaning mechanism 100. The cleaning mechanism 100 includes a first cleaning component 10 and a second cleaning component 20. The first cleaning component 10 is disposed beside the electrode plate 200 in the thickness direction Y of the electrode plate and includes an adsorbent 11 and a carrier 12 disposed on the side of the adsorbent 11 close to the electrode plate 200. The adsorbent 11 is configured to adsorb impurities on the electrode plate 200 by using magnetic force and through the carrier 12. The carrier 12 is used to carry impurities. The second cleaning component 20 is disposed beside the carrier 12 and is used to remove the impurities on the carrier 12.

[0047] The electrode plate cleaning device according to some embodiments of the present application includes a cleaning mechanism 100. The cleaning mechanism 100 is disposed on one side in the thickness direction Y of the electrode plate 200 to clean the electrode plate 200. Referring to Figure 1, the pole piece cleaning device of some embodiments of the present application includes at least two cleaning mechanisms 100. The at least two cleaning mechanisms 100 include a first cleaning mechanism and a second cleaning mechanism respectively arranged on both sides of the pole piece 200, and in the length direction Z of the pole piece 200, the first cleaning mechanism and the second cleaning mechanism are staggeredly arranged. In some embodiments not shown in the drawings, the pole piece cleaning device may also include a cleaning mechanism 100.

[0048] The pole piece 200 can be a positive pole piece or a negative pole piece.

[0049] Reference Figure 2 and Figure 3 , the cleaning mechanism 100 includes a first cleaning component 10 and a second cleaning component 20. Among them, the first cleaning component 10 is arranged beside the pole piece 200 and includes an adsorbent 11 and a carrier 12 arranged on the side of the adsorbent 11 close to the pole piece 200. The adsorbent 11 is used to utilize the adsorption force and adsorb the impurities on the pole piece 200 through the carrier 12. That is to say, the adsorbent 11 of the first cleaning component 10 does not directly adsorb the impurities, but the impurities will be adsorbed on the carrier 12 of the first cleaning component 10, and the second cleaning component 20 is used to remove the impurities on the carrier 12.

[0050] In some embodiments, the adsorbent 11 includes a magnetic member. In other embodiments, the adsorbent 11 may also include a negative pressure adsorbent.

[0051] In the first cleaning component 10 of the pole piece cleaning device according to the embodiments of the present application, by arranging the carrier 12 on the side of the adsorbent 11 close to the pole piece 200, the adsorption force of the adsorbent 11 will act on the impurities on the pole piece 200 through the carrier 12, so that the impurities are adsorbed on the carrier 12. The second cleaning component 20 of the embodiments of the present application is arranged beside the carrier 12, so as to realize the cleaning of the impurities on the carrier 12. When the surface of the carrier 12 is cleaned, the cleaning of the pole piece can be better realized. Therefore, the cleaning effect of the pole piece is improved. Further, when the pole piece cleaning device according to the embodiments of the present application cleans the impurities on the pole piece 200, the impurities are adsorbed on the carrier 12 instead of directly on the adsorbent 11. In this way, the second cleaning component 20 can be used to clean the surface of the carrier 12 instead of directly cleaning the surface of the adsorbent 11, which can avoid damage to the adsorbent caused by directly cleaning the adsorbent 11 by the second cleaning component 20.

[0052] Such as Figure 3As shown, in some embodiments, the adsorbing member 11 includes a magnetic member, and the adsorbing member 11 is configured to be movably disposed relative to the carrier member 12 in the thickness direction Y to switch the pole piece cleaning device between a first state and a second state. In the first state, the adsorbing member 11 is close to the carrier member 12 so that the magnetic force of the adsorbing member 11 adsorbs impurities through the carrier member 12; in the second state, the adsorbing member 11 is away from the carrier member 12, and the second cleaning assembly is configured to operate to adsorb impurities on the carrier member 12.

[0053] Specifically, the magnetic member includes a magnetic rod. The magnetic rod is composed of an internal magnetic core and an external cladding. The magnetic core includes a cylindrical magnet block and a magnetic conductive sheet.

[0054] Since the adsorbing member of the first cleaning assembly 10 in the embodiments of the present application adsorbs impurities on the surface of the pole piece 200 by using magnetic force, and the magnetic force of the magnetic member is very strong, in order to avoid the strong magnetic force of the magnetic member having an adverse effect on the normal operation of the second cleaning assembly 20, in some embodiments, referring to Figure 3 ..., the adsorbing member 11 is configured to be movably disposed relative to the carrier member 12 in the thickness direction Y of the pole piece 200 to switch the pole piece cleaning device between a first state and a second state. In the first state, the adsorbing member 11 is close to the carrier member 12 so that the magnetic force of the adsorbing member 11 adsorbs impurities through the carrier member 12; in the second state, the adsorbing member 11 is away from the carrier member 12. And the second cleaning assembly 20 is configured to operate to adsorb impurities on the carrier member 12.

[0055] Referring to Figure 3 ..., the adsorbing member 11 is movable relative to the carrier member 12 in the thickness direction Y of the pole piece 200, so that the adsorbing member 11 is close to or away from the carrier member 12. Specifically, in the embodiment shown in Figure 3 ..., the first cleaning assembly 10 further includes a first driving mechanism 13 for driving the adsorbing member 11 to move. The first driving mechanism 13 is used to drive the adsorbing member 11 to move in the thickness direction Y to be away from or close to the carrier member 12. In other embodiments not shown in other drawings, the carrier member 12 may also be movable relative to the adsorbing member 11. That is to say, the carrier member 12 and the adsorbing member 11 in the embodiments of the present application have relative movement in the thickness direction Y. The present application does not limit whether it is the carrier member 12 that moves or the adsorbing member 11 that moves, as long as there is relative movement.

[0056] In the first state, the adsorbing member 11 approaches the carrier member 12, so that the magnetic force of the adsorbing member 11 can act on the impurities on the pole piece through the carrier member 12, thereby adsorbing the impurities on the carrier member 12. In the second state, that is, when it is necessary to clean the impurities attached to the carrier member 12, the adsorbing member 11 is controlled to move away from the carrier member 12, which can avoid the high magnetism of the adsorbing member 11 from adsorbing ferromagnetic substances inside the second cleaning assembly 20, thereby avoiding adverse effects on the cleaning work. Moreover, when the second cleaning assembly 20 cleans the carrier member 12, it will move along the carrier member 12 to achieve a full range of cleaning of the carrier member 12. When the second cleaning assembly 20 performs the cleaning operation, by controlling the adsorbing member 11 to move away from the carrier member 12, it can avoid the high magnetism of the adsorbing member 11 from affecting the normal movement of the second cleaning assembly 20.

[0057] When the pole piece cleaning device according to the embodiment of the present application needs to use the second cleaning assembly 20 to clean the carrier member 12, the adsorbing member 11 is controlled to move away from the carrier member 12, which can avoid the adverse effect of the magnetic force of the adsorbing member 11 on the cleaning work of the second cleaning assembly 20, and is conducive to ensuring the normal progress of the cleaning work of the second cleaning assembly 20.

[0058] In some embodiments, the carrier member 12 includes a first trough-shaped structure and is sleeved outside the adsorbing member 11. The adsorbing member 11 leaves or approaches the carrier member 12 through the opening of the first trough-shaped structure.

[0059] Reference Figure 3 , the carrier member 12 includes a first trough-shaped structure. The first trough-shaped structure includes two side walls arranged oppositely and a bottom wall arranged between the two side walls. The two side walls and the bottom wall jointly enclose a trough-shaped cavity, and the adsorbing member 11 is arranged in the trough-shaped cavity. In this way, the bottom wall and the two side walls of the first trough-shaped structure can form a multi-faceted coating on the adsorbing member 11, so that the magnetic forces at different positions of the adsorbing member 11 can act on the impurities through the carrier member 12. In other words, impurities at different positions can be adsorbed on the carrier member 12, and the carrier member 12 forms a multi-faceted protection for the adsorbing member 11, avoiding the problem that impurities are adsorbed on the adsorbing member and are difficult to clean. On the other hand, by setting the carrier member 12 as the first trough-shaped structure, the opening of the first trough-shaped structure is arranged opposite to the bottom wall, so that the adsorbing member 11 can enter or leave the trough-shaped cavity through the opening, thereby realizing approaching or moving away from the carrier member 12. The first trough-shaped structure can realize the relative movement between the adsorbing member 11 and the carrier member 12 in the thickness direction Y while being able to protect the adsorbing member 11.

[0060] The carrier 12 in the embodiment of the present application includes a first groove structure, such that the first groove structure forms a covering of multiple surfaces of the adsorbent 11, and impurities at different positions can be adsorbed on the carrier 12, avoiding the problem that impurities are adsorbed on the adsorbent and are difficult to clean. Moreover, the adsorbent 11 can enter or leave the groove cavity through the opening of the first groove structure, thereby approaching or moving away from the carrier 12, avoiding the adverse impact of the magnetism of the adsorbent 11 on the cleaning action of the second cleaning assembly 20.

[0061] As can be known from the above, the carrier 12 is a first groove structure, such that multiple wall surfaces of the carrier 12 can adsorb impurities. Therefore, in order to comprehensively clean the carrier 12, in some embodiments, referring to Figure 4 , the negative pressure cavity 21 includes a second groove structure and is sleeved outside the carrier 12.

[0062] Referring to Figure 4 , the negative pressure cavity 21 is set as a second groove structure, such that the shape of the negative pressure cavity 21 is adapted to the shape of the carrier 12. The negative pressure cavity 21 is covered outside the carrier 12, thereby realizing the cleaning of each wall surface of the carrier 12 and optimizing the cleaning effect. Referring to Figure 4 , the negative pressure cavity 21 has a negative pressure adsorption port, and the negative pressure adsorption port extends along the extension direction of the second groove structure to form a U-shaped adsorption port, thereby realizing the cleaning of each wall surface of the carrier 12. Moreover, the negative pressure cavity 21 is movably arranged relative to the carrier 12 in the width direction X of the pole piece 200. By setting the negative pressure cavity 21 as a second groove structure adapted to the shape of the carrier 12, the carrier 12 forms a guiding effect on the movement of the second cleaning assembly 20. Therefore, the stability of the movement of the second cleaning assembly can be improved.

[0063] The negative pressure cavity 21 of the second cleaning assembly 20 in the embodiment of the present application is set as a second groove structure, such that the second groove structure is sleeved outside the carrier 12, thereby realizing the all-round cleaning of the carrier 12. Moreover, the second groove structure is sleeved outside the carrier 12, and the carrier 12 forms a guiding effect on the movement of the second cleaning assembly 20. Therefore, the stability of the movement of the second cleaning assembly can be improved.

[0064] In some embodiments, the carrier 12 is made of stainless steel. The carrier 12 is made of stainless steel to avoid corrosion of the carrier 12 during the cleaning process of the second cleaning assembly 20.

[0065] In some embodiments, the second cleaning assembly 20 includes a negative pressure cavity 21. The negative pressure cavity 21 is configured to suck out impurities on the surface of the carrier 12 by using negative pressure.

[0066] When using the second cleaning assembly 20 in the embodiment of the present application to clean impurities on the carrier, referring toFigure 3 The negative pressure cavity 21 is arranged on the carrier 12 to suck impurities on the carrier 12 by negative pressure. The second cleaning assembly 20 further includes a negative pressure pipe 25 connected to the negative pressure cavity 21, and the negative pressure pipe 25 is used to be connected to a negative pressure pump to maintain the negative pressure in the negative pressure cavity 21.

[0067] By arranging the negative pressure cavity in the second cleaning assembly 20 of the polar plate cleaning device according to the embodiment of the present application to suck impurities on the carrier by negative pressure, impurities attached to the carrier due to static electricity or other reasons can be separated from the carrier 12 under the action of negative pressure, thereby realizing more thorough cleaning of the carrier 12. The carrier 12 being more thoroughly cleaned can better realize the cleaning of the polar plate, so the cleaning effect of the polar plate is improved.

[0068] The adsorbent 11 of the first cleaning assembly 10 according to the embodiment of the present application is configured to adsorb impurities on the surface of the polar plate by magnetic force. Controlling the disappearance of the magnetic force of the adsorbent 11 of the first cleaning assembly 10 can cause most of the impurities to fall off the carrier 12 due to the loss of magnetic force, but there are still some impurities that are attached to the carrier 12 due to static electricity or viscosity. For example, the impurities attached to the carrier 12 may be slurry, and the slurry has viscosity and is easy to adhere to the carrier 12. The second cleaning assembly 20 according to the embodiment of the present application is proposed for this part of the impurities, and the negative pressure acting force of the negative pressure cavity is applied to the impurities to better clean the carrier 12.

[0069] To further improve the cleaning effect of the carrier, refer to Figures 3 to 6 In some embodiments, the second cleaning assembly 20 further includes a scraper 22 arranged in the negative pressure cavity 21. The scraper 22 is movably arranged relative to the carrier 12 to scrape off impurities attached to the carrier 12.

[0070] Refer to Figure 4 The scraper 22 is a plate-shaped member, which is in direct contact with the carrier 12 and moves relative to the carrier 12 to scrape off impurities attached to the carrier 12. In some embodiments, a tip may be arranged at one end of the scraper 22 close to the carrier 12 to better scrape off impurities.

[0071] In the second cleaning component 20 of the embodiment of the present application, the scraper 22 is provided to scrape off impurities adhering to the carrier 12. Since the scraper 22 is in direct contact with the carrier 12 and scrapes off the impurities adhering to the carrier 12 through relative movement, the cleaning efficiency is high and the cleaning effect is good, especially suitable for viscous slurries. Moreover, the scraper 22 of the second cleaning component 20 of the embodiment of the present application is directly arranged inside the negative pressure cavity 21, so that the impurities scraped off by the scraper 22 can be directly sucked away under the negative pressure of the negative pressure cavity 21, thereby avoiding the impurities being adsorbed on the electrode sheet again and further improving the cleaning effect on the electrode sheet.

[0072] Since the dry slurry is relatively hard, to remove the dry slurry adhering to the carrier 12, it is necessary to control the scraper 22 to move back and forth repeatedly or increase the scraping force. Controlling the scraper 22 to move back and forth repeatedly will result in a long scraping time and low cleaning efficiency. And increasing the scraping force may cause damage to the carrier 12. To solve this problem, referring to Figures 3 to 6 , in some embodiments, the second cleaning component 20 further includes a water spraying member 23. The water spraying member 23 has a water spraying port 231. The water spraying port 231 is configured to spray water on the carrier 12 before the scraper 22 scrapes off the impurities.

[0073] Referring to Figure 3 and Figure 6 , the water spraying member 23 has at least two water spraying ports 231 arranged at intervals to achieve uniform wetting of the carrier 12. Moreover, the water spraying member 23 is arranged outside the negative pressure cavity 21. On the one hand, it can prevent the water sprayed from the water spraying port 231 from being sucked away under the negative pressure before it wets the slurry. On the other hand, it can prevent a large amount of water from being sucked away by the negative pressure of the negative pressure cavity 21 and affecting the working performance of the negative pressure pump that generates the negative pressure.

[0074] Specifically, an atomizing nozzle is arranged at the water spraying port 231 to form a spray to optimize the wetting effect on the slurry.

[0075] Specifically, the second cleaning component 20 of the embodiment of the present application further includes a water pipe and a water pump for supplying water to the water spraying member 23. The water pump is used to pump the cleaning water through the water pipe to the water spraying port 231.

[0076] By first controlling the water spraying member 23 to spray water on the carrier to wet and soften the slurry, and then using the scraper 22 to scrape off the wetted slurry, the cleaning efficiency can be accelerated. Moreover, wetting the slurry first and then scraping it reduces the scraping difficulty and avoids damage to the carrier 12 due to too large a force of the scraper.

[0077] Referring to Figure 2 and Figure 3, in some embodiments, the second cleaning assembly 20 is configured to be movable relative to the carrier 12 in the width direction X. The water spraying member 23 is disposed outside the negative pressure cavity 21 and is located on the downstream side of the negative pressure cavity 21 in the moving direction of the second cleaning assembly 20.

[0078] Reference Figure 2 , the first cleaning assembly 10 includes an adsorbing member 11 and a carrier 12. The adsorbing member 11 and the carrier 12 extend in the width direction X of the electrode sheet 200 to achieve cleaning of different positions in the width direction of the electrode sheet 200. In order to achieve comprehensive cleaning of the carrier 12, the second cleaning assembly 20 is configured to be movable relative to the carrier 12 in the width direction X. The second cleaning assembly 20 is controlled to move relative to the carrier 12 in the width direction X to achieve comprehensive cleaning of different positions of the carrier 12. Further, the water spraying member 23 is disposed on the downstream side of the negative pressure cavity 21. Specifically, as Figure 2 shown, the second cleaning assembly 20 moves from right to left along the width direction X, and the water spraying member 23 is disposed on the left side of the negative pressure cavity 21, so that the water spraying member 23 sprays water first, and then the negative pressure cavity 21 can move to the wetted area to achieve scraping and suction of the slurry.

[0079] The water spraying member 23 is disposed outside the negative pressure cavity 21. On the one hand, it can prevent the water sprayed from the water spraying port 231 from being sucked away under the action of negative pressure before it has time to wet the slurry. On the other hand, it can prevent a large amount of water from being sucked away by the negative pressure of the negative pressure cavity 21, which affects the working performance of the negative pressure pump generating the negative pressure. By disposing the water spraying member 23 on the downstream side of the negative pressure cavity 21, the water spraying member 23 will naturally act on the slurry attached to the carrier 12 prior to the negative pressure cavity 21, without the need for logical control of the actions of the water spraying member 23 and the negative pressure cavity 21, thus reducing the control difficulty.

[0080] In some embodiments, the second cleaning assembly 20 further includes a sweeping brush 24 disposed in the negative pressure cavity 21. The sweeping brush 24 is movably disposed relative to the carrier 12 to sweep away impurities on the carrier 12. The carrier is configured to extend in the width direction of the electrode sheet, and the second cleaning assembly is configured to be movable relative to the carrier in the width direction. The sweeping brush 24 is disposed on the upstream side of the scraping plate 22 in the moving direction of the second cleaning assembly 20.

[0081] Reference Figure 4 , the sweeping brush 24 is disposed in the negative pressure cavity 21 and is located on the upstream side of the scraping plate 22 in the moving direction of the second cleaning assembly 20. This enables the cleaning actions of the second cleaning assembly 20 to proceed in an orderly manner. First, the water spraying member 23 is used to wet and soften the slurry, then the scraping plate 22 is used to scrape the slurry, and further the sweeping brush 24 is used to sweep away the impurities attached to the carrier 12 to detach them from the carrier 12. Finally, these impurities are completely sucked away under the action of negative pressure.

[0082] The cleaning operation of the second cleaning component 20 in the embodiments of the present application can be carried out naturally and orderly according to the positions of the respective components during the movement of the second cleaning component 20 in the width direction, without logically ordering the control of the respective components of the second cleaning component 20, so the control is simple.

[0083] Reference Figure 1 , in some embodiments, the electrode sheet cleaning device includes at least two cleaning mechanisms 100. The at least two cleaning mechanisms 100 include a first cleaning mechanism and a second cleaning mechanism respectively arranged on both sides of the electrode sheet 200. In the length direction Z of the electrode sheet 200, the first cleaning mechanism and the second cleaning mechanism are arranged in a staggered manner. The conveying direction of the electrode sheet 200 is also along its length direction Z. The width direction X of the electrode sheet 200 is perpendicular to the length direction Z.

[0084] The first cleaning mechanism and the second cleaning mechanism in the embodiments of the present application are arranged in a staggered manner in the length direction Z of the electrode sheet 200, that is, the first cleaning mechanism and the second cleaning mechanism are respectively located at different positions in the length direction Z of the electrode sheet 200, and the positions of the first cleaning mechanism and the second cleaning mechanism in the length direction Z do not overlap. This makes the acting positions of the adsorption forces of the first cleaning mechanism and the second cleaning mechanism different in the length direction Z of the electrode sheet 200, so that the acting positions of the adsorption forces can be dispersed, and further the stress on the electrode sheet 200 can be dispersed, which is beneficial to avoiding the problem of damage to the electrode sheet caused by local stress concentration.

[0085] In some embodiments, the first cleaning mechanism and the second cleaning mechanism are configured to approach or move away from each other in the thickness direction Y.

[0086] When the cleaning mechanism cleans the electrode sheet, the distance between the first cleaning component 10 and the electrode sheet 200 is very small, and the second cleaning component 20 is also arranged on the side of the carrier 12 close to the electrode sheet, so the action of the second cleaning component 20 is likely to cause damage to the electrode sheet. Therefore, when using the second cleaning component 20 to remove impurities on the carrier 12, it is necessary to control the cleaning mechanism to be away from the electrode sheet to avoid damaging the electrode sheet.

[0087] Reference Figure 3 , the electrode sheet cleaning device further includes a second driving mechanism 300. The second driving mechanism 300 is used to drive the first cleaning mechanism and the second cleaning mechanism to approach or move away from each other. When it is necessary to clean the carrier 12 of the first cleaning component, the second driving mechanism 300 drives the first cleaning mechanism and the second cleaning mechanism to move away from each other to be away from the electrode sheet; after cleaning the carrier 12, the second driving mechanism 300 drives the first cleaning mechanism and the second cleaning structure to approach each other to be close to the electrode sheet to realize the cleaning of the electrode sheet.

[0088] In some embodiments, the second driving mechanism 300 includes a cylinder. The cylinder simultaneously drives the first cleaning mechanism and the second cleaning mechanism to move closer to or away from each other. Specifically, the cylinder can be a double-acting cylinder. Using a single cylinder to simultaneously drive the two cleaning mechanisms can ensure their precise synchronous movement, moving closer to or away from each other simultaneously, thereby ensuring synchronism. Moreover, using a single cylinder makes the structure of the pole piece cleaning device according to the embodiments of the present application relatively simple and occupies less space.

[0089] In the pole piece cleaning device according to the embodiments of the present application, by moving the first cleaning mechanism and the second cleaning mechanism closer to or away from each other, when it is necessary to clean the carrier of the first cleaning component with the second cleaning component, the first cleaning mechanism and the second cleaning structure can move away from each other, thereby realizing moving away from the pole piece and avoiding damage to the pole piece caused by the cleaning action of the second cleaning component. After the cleaning is completed, the first cleaning mechanism and the second cleaning mechanism are controlled to move closer to each other to achieve the cleaning of the pole piece.

[0090] The embodiments of the present application provide a pole piece production device, including the above-mentioned pole piece cleaning device.

[0091] Next, according to Figures 1 to 6 a detailed description will be given of the structure and working process of the pole piece cleaning device in a specific embodiment of the present application.

[0092] As Figure 1 shown, the pole piece cleaning device of this embodiment includes two cleaning mechanisms 100. The two cleaning mechanisms 100 are arranged in a staggered manner in the length direction Z of the pole piece 200.

[0093] As Figure 2 and Figure 3 shown, the pole piece cleaning device of this embodiment further includes a second driving mechanism 300 for driving the two cleaning mechanisms 100 to move in the thickness direction Y relative to the pole piece 200.

[0094] As Figure 2 and Figure 3 shown, the cleaning mechanism 100 includes a first cleaning component 10 and a second cleaning component 20. The first cleaning component 10 includes a suction member 11 and a carrier 12. Among them, the suction member 11 is movably arranged relative to the carrier 12 in the thickness direction Y. The first cleaning component 10 further includes a first driving mechanism 13 for driving the suction member 11 to move.

[0095] The suction member 11 of this embodiment includes a magnetic rod and is a permanent magnet.

[0096] The second cleaning component 20 includes a negative pressure cavity 21, a scraping plate 22, a water spraying member 23, a sweeping brush 24, and a negative pressure pipe 25. The water spraying member 23 is disposed outside the negative pressure cavity 21, and the scraping plate 22 and the sweeping brush 24 are disposed inside the negative pressure cavity 21. The negative pressure pipe 25 is in gas communication with the inner cavity of the negative pressure cavity 21 to provide negative pressure. When the negative pressure cavity 21 moves, it drives the scraping plate 22 and the sweeping brush 24 located inside it and the water spraying member 23 located outside it to move synchronously.

[0097] As Figure 3 shown, the pole piece cleaning device of this embodiment further includes a third driving mechanism 500 for driving the second cleaning component 20 to move. The third driving mechanism 500 is drivingly connected to the negative pressure cavity 21 to drive the second cleaning component 20 to move along the width direction X.

[0098] The first driving mechanism 13, the second driving mechanism 300, and the third driving mechanism 500 of this embodiment are air cylinders.

[0099] After cleaning the pole piece by using the pole piece cleaning device of the embodiment of the present application, it is necessary to remove the impurities on the carrier 12, that is, to use the second cleaning component 20 to clean the carrier 12.

[0100] First, it is necessary to control the second driving mechanism 300 to act to control both cleaning mechanisms 100 to move away from the pole piece 200, thereby leaving space for the cleaning action of the second cleaning component 20; and control the first driving mechanism 13 to act to move the adsorbing member 11 away from the carrier 12 to prevent the strong magnetism of the adsorbing member 11 from adsorbing ferromagnetic substances in the second cleaning component 20 and thus affecting the normal operation of the second cleaning component 20. Then control the third driving mechanism 500 to act to control the second cleaning component 20 to move on the carrier 12 along the width direction X. During the movement, the water spraying member 23 sprays water on the carrier 12 to wet the slurry, the scraping plate 22 is in direct contact with the carrier 12 to scrape off the slurry, and then the sweeping brush 24 cleans iron filings and impurities. During the action process of the above scraping plate 22 and sweeping brush 24, the negative pressure of the negative pressure cavity 21 continuously acts to suck away impurities such as slurry.

[0101] Specifically, as Figure 3 shown, the second cleaning component 20 moves along the guide rail under the drive of the third driving mechanism 500, wherein the guide rail extends along the width direction X, and the second cleaning component 20 includes a slider cooperating with the guide rail, thereby realizing the guiding of the movement of the second cleaning component 20. Similarly, when the first driving mechanism 13 drives the adsorbing member 11 away from the carrier 12, the adsorbing member 11 is also configured to move along another guide rail to achieve precise control of the movement direction.

[0102] One cleaning can be completed when the second cleaning component 20 moves once from right to left along the width direction X. The whole process is fully automated without manual participation, with high cleaning efficiency and time saving.

[0103] Although the present application has been described with reference to the preferred embodiments, various modifications can be made to it and components thereof can be replaced with equivalents without departing from the scope 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 pole piece cleaning device for cleaning a pole piece (200), characterized in that, It includes a cleaning mechanism (100), and the cleaning mechanism (100) includes: A first cleaning component (10), which is arranged beside the electrode sheet (200) in the thickness direction (Y) of the electrode sheet (200). The first cleaning component (10) includes an adsorbent (11) and a carrier (12) arranged on the side of the adsorbent (11) close to the electrode sheet (200). The adsorbent (11) is configured to use the adsorption force to adsorb impurities on the electrode sheet through the carrier (12), and the carrier (12) is used to carry the impurities; and A second cleaning component (20), which is arranged beside the carrier (12) and is used to remove impurities on the carrier (12); The adsorbent (11) includes a magnetic member, and the adsorbent (11) is configured to be movably arranged relative to the carrier (12) in the thickness direction (Y) so that the electrode sheet cleaning device can switch between a first state and a second state. In the first state, the adsorbent (11) is close to the carrier (12) so that the magnetic force of the adsorbent (11) adsorbs impurities through the carrier (12); in the second state, the adsorbent (11) is far from the carrier (12), and the second cleaning component (20) is configured to work to adsorb impurities on the carrier (12).

2. The pole piece cleaning device according to claim 1, wherein, The carrier (12) includes a first groove-shaped structure and is sleeved outside the adsorbent (11). The adsorbent (11) leaves or approaches the carrier (12) through the opening of the first groove-shaped structure.

3. The pole piece cleaning device according to claim 2, characterized in that, The second cleaning component (20) is configured to be movably arranged relative to the carrier (12) along the width direction (X) of the electrode sheet (200), and the second cleaning component (20) includes a second groove-shaped structure and is sleeved outside the carrier (12).

4. The pole piece cleaning device according to any one of claims 1 to 3, characterized in that, The carrier (12) is made of stainless steel.

5. The pole piece cleaning device according to any one of claims 1 to 3, characterized in that The second cleaning component (20) includes a negative pressure cavity (21), and the negative pressure cavity (21) is configured to use negative pressure to suck out impurities on the surface of the carrier (12).

6. The pole piece cleaning device according to claim 5, characterized in that, The second cleaning component (20) further includes a scraper (22) arranged in the negative pressure cavity (21). The scraper (22) is movably arranged relative to the carrier (12) to scrape off impurities attached to the carrier (12).

7. The pole piece cleaning device according to claim 6, wherein The second cleaning component (20) further includes a water spraying member (23). The water spraying member (23) has a water spraying port (231), and the water spraying port (231) is configured to spray water on the carrier (12) before the scraper (22) scrapes off the impurities.

8. The pole piece cleaning device according to claim 7, characterized in that, The carrier (12) is configured to extend in the width direction (X) of the electrode sheet (200). The second cleaning component (20) is configured to be movably arranged relative to the carrier (12) along the width direction (X). The water spraying member (23) is arranged outside the negative pressure cavity (21) and is located on the downstream side of the negative pressure cavity (21) in the moving direction of the second cleaning component (20).

9. The pole piece cleaning device according to claim 7, characterized in that, The second cleaning assembly (20) further includes a sweeping brush (24) disposed in the negative pressure cavity (21). The sweeping brush (24) is movably disposed relative to the carrier (12) to sweep impurities on the carrier (12). The carrier (12) is configured to extend in the width direction (X) of the electrode plate (200). The second cleaning assembly (20) is configured to be movable relative to the carrier (12) along the width direction (X). The sweeping brush (24) is disposed on the upstream side of the scraping plate (22) in the moving direction of the second cleaning assembly (20).

10. The pole piece cleaning device according to any one of claims 1 to 3, characterized in that, The electrode plate cleaning device includes at least two of the cleaning mechanisms (100). The at least two cleaning mechanisms (100) include a first cleaning mechanism and a second cleaning mechanism respectively disposed on two sides of the electrode plate (200). In the length direction (Z) of the electrode plate, the first cleaning mechanism and the second cleaning mechanism are staggeredly arranged.

11. The pole piece cleaning device according to claim 10, wherein, The first cleaning mechanism and the second cleaning mechanism are configured to approach or separate from each other in the thickness direction (Y) of the electrode plate.

12. A pole piece production device, characterized in that, Includes the electrode plate cleaning device according to any one of claims 1 to 11.

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