CN113509789A - Battery thick liquids filter core and battery thick liquids filter system for filtration system - Google Patents
Battery thick liquids filter core and battery thick liquids filter system for filtration system Download PDFInfo
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- CN113509789A CN113509789A CN202110546218.7A CN202110546218A CN113509789A CN 113509789 A CN113509789 A CN 113509789A CN 202110546218 A CN202110546218 A CN 202110546218A CN 113509789 A CN113509789 A CN 113509789A
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D39/00—Filtering material for liquid or gaseous fluids
- B01D39/14—Other self-supporting filtering material ; Other filtering material
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B32—LAYERED PRODUCTS
- B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
- B32B33/00—Layered products characterised by particular properties or particular surface features, e.g. particular surface coatings; Layered products designed for particular purposes not covered by another single class
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B32—LAYERED PRODUCTS
- B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
- B32B5/00—Layered products characterised by the non- homogeneity or physical structure, i.e. comprising a fibrous, filamentary, particulate or foam layer; Layered products characterised by having a layer differing constitutionally or physically in different parts
- B32B5/02—Layered products characterised by the non- homogeneity or physical structure, i.e. comprising a fibrous, filamentary, particulate or foam layer; Layered products characterised by having a layer differing constitutionally or physically in different parts characterised by structural features of a fibrous or filamentary layer
- B32B5/022—Non-woven fabric
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B32—LAYERED PRODUCTS
- B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
- B32B5/00—Layered products characterised by the non- homogeneity or physical structure, i.e. comprising a fibrous, filamentary, particulate or foam layer; Layered products characterised by having a layer differing constitutionally or physically in different parts
- B32B5/22—Layered products characterised by the non- homogeneity or physical structure, i.e. comprising a fibrous, filamentary, particulate or foam layer; Layered products characterised by having a layer differing constitutionally or physically in different parts characterised by the presence of two or more layers which are next to each other and are fibrous, filamentary, formed of particles or foamed
- B32B5/24—Layered products characterised by the non- homogeneity or physical structure, i.e. comprising a fibrous, filamentary, particulate or foam layer; Layered products characterised by having a layer differing constitutionally or physically in different parts characterised by the presence of two or more layers which are next to each other and are fibrous, filamentary, formed of particles or foamed one layer being a fibrous or filamentary layer
- B32B5/26—Layered products characterised by the non- homogeneity or physical structure, i.e. comprising a fibrous, filamentary, particulate or foam layer; Layered products characterised by having a layer differing constitutionally or physically in different parts characterised by the presence of two or more layers which are next to each other and are fibrous, filamentary, formed of particles or foamed one layer being a fibrous or filamentary layer another layer next to it also being fibrous or filamentary
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B32—LAYERED PRODUCTS
- B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
- B32B2262/00—Composition or structural features of fibres which form a fibrous or filamentary layer or are present as additives
- B32B2262/02—Synthetic macromolecular fibres
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B32—LAYERED PRODUCTS
- B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
- B32B2262/00—Composition or structural features of fibres which form a fibrous or filamentary layer or are present as additives
- B32B2262/02—Synthetic macromolecular fibres
- B32B2262/0223—Vinyl resin fibres
- B32B2262/0238—Vinyl halide, e.g. PVC, PVDC, PVF, PVDF
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B32—LAYERED PRODUCTS
- B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
- B32B2262/00—Composition or structural features of fibres which form a fibrous or filamentary layer or are present as additives
- B32B2262/02—Synthetic macromolecular fibres
- B32B2262/0253—Polyolefin fibres
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B32—LAYERED PRODUCTS
- B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
- B32B2262/00—Composition or structural features of fibres which form a fibrous or filamentary layer or are present as additives
- B32B2262/02—Synthetic macromolecular fibres
- B32B2262/0261—Polyamide fibres
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B32—LAYERED PRODUCTS
- B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
- B32B2262/00—Composition or structural features of fibres which form a fibrous or filamentary layer or are present as additives
- B32B2262/02—Synthetic macromolecular fibres
- B32B2262/0276—Polyester fibres
- B32B2262/0284—Polyethylene terephthalate [PET] or polybutylene terephthalate [PBT]
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B32—LAYERED PRODUCTS
- B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
- B32B2307/00—Properties of the layers or laminate
- B32B2307/70—Other properties
- B32B2307/724—Permeability to gases, adsorption
Abstract
The invention discloses a filter element for a battery slurry filtering system, which belongs to the technical field of battery slurry filtering and comprises a central rod and a filtering layer arranged outside the central rod, wherein the filtering layer comprises a plurality of layers of soft medium layers, an inner barrier layer and an outer barrier layer, the inner barrier layer is arranged between the soft medium layers and the central rod and used for preventing the soft medium layers from being pressed into the central rod, the outer barrier layer is arranged outside the soft medium layers and used for wrapping the soft medium layers, a spacer layer used for providing an impurity containing space is arranged inside the soft medium layers, and a spacer layer is arranged inside the soft medium layers and used for separating two adjacent soft medium layers and preventing the adjacent soft medium layers from being directly overlapped to cause too thick wrapping, slurry does not have good permeability, and the spacer layer can support a certain space to contain impurities filtered by the soft medium layers.
Description
[ technical field ] A method for producing a semiconductor device
The invention relates to the technical field of battery slurry filtration, in particular to a filter element for a battery slurry filtration system and a lithium battery slurry filtration system.
[ background of the invention ]
The production process of the lithium battery comprises the steps of proportioning, coating, rolling, slitting, punching, laminating, tab welding, packaging and injecting liquid, wherein the proportioning refers to the steps of preparing a slurry meeting the requirements of viscosity and solid content from raw materials of the electrode according to a certain proportion, uniformly stirring and dispersing the slurry, and filtering to remove impurities in the slurry so as to improve the production quality of the lithium battery and the performance of the product.
The electrode slurry is formed by uniformly dispersing an electrode active material, a conductive agent, a binder and a solvent, belongs to a typical high-viscosity solid-liquid suspension, and the dispersibility and uniformity of a granular active substance directly influence the movement of lithium ions between two electrodes of a battery, so that the mixing and dispersing of the slurry of each pole piece material in the production of the lithium ion battery are very important, the quality of the slurry dispersion directly influences the quality of the subsequent lithium ion battery production and the performance of the product thereof, and the ideal electrode slurry is a suspension with uniform dispersion and high stability.
Through traditional mixing and stirring equipment, only large powder agglomerates in a solution can be broken up and uniformly distributed, but the powder form is stored in the solution in the form of fine powder agglomerates, and only the processing requirement of macro dispersion is met, and slurry after macro stirring and dispersion can be further broken up and homogenized under the action of strong mechanical cutting force of superfine dispersion homogenizing equipment, so that enough fine solid particles are obtained and uniformly distributed in the solution, the effect of micro superfine dispersion homogenization is achieved, and the comprehensive performance of the slurry can be obviously improved.
With the completion of slurry mixing and the stopping of stirring, the slurry can generate phenomena of precipitation, flocculation, coalescence and the like, impurities in large-particle colloid form are generated, if the impurities enter a coating process, scratches and bad tracks can be generated on the surfaces of positive and negative pole pieces, the quality of the pole pieces is influenced, and therefore the impurities need to be filtered and removed before the coating process, at present, a filter element for filtering the lithium battery slurry generally adopts a metal mesh, as in the invention application with the application number of 201880075982.7, a system and a related method for manufacturing a screen filter based on metal wires are disclosed, and the metal mesh is pointed out in the specification to be used for multiple purposes. One of the most popular uses is as a liquid separation apparatus or filter for removing solids from liquids or as a gas separation apparatus for removing solids or suspended liquids from gases. As well as the utility model patent document with the publication number of CN206214865U, a filter element for filtering lithium battery slurry is disclosed, the filter element has a three-layer structure, which comprises a stainless steel support body, a stainless steel filter screen and a polypropylene fixed outer net from inside to outside in sequence, the support body, the filter screen and the fixed outer net are coaxially arranged, the support body and the fixed outer net are both hollow structures, the filter screen is wrapped on the surface of the support body in a manual wrapping manner and is fixed by the fixed outer net; the stainless steel supporter both ends outer wall is equipped with annular groove, the inner wall is opened there is the screw hole, the mid portion is trompil section of thick bamboo wall, though can filter the impurity in the thick liquids through above-mentioned filter core, stainless steel filter screen is the individual layer filter screen, the filter fineness is low, the filter effect is not good, and stainless steel filter screen net texture is the stereoplasm, when filtering colloid impurity, this kind of impurity possible particle diameter is greater than the screen cloth aperture, but when the process stereoplasm metal mesh, under the effect of pressure, produce deformation easily, and then pass metal mesh, therefore metal mesh is relatively poor to the filterability of this kind of impurity.
[ summary of the invention ]
The present invention is directed to a filter cartridge for a battery slurry filtration system that at least partially solves the above-mentioned problems.
In order to solve the technical problems, the invention adopts the following technical scheme:
the filter element for the battery slurry filtering system comprises a central rod and a filter layer arranged outside the central rod, wherein the filter layer comprises a plurality of layers of soft medium layers, an inner barrier layer and an outer barrier layer, the inner barrier layer is arranged between the soft medium layers and the central rod and used for preventing the soft medium layers from being pressed into the central rod, the outer barrier layer is arranged outside the soft medium layers and used for wrapping the soft medium layers, and the barrier layer is arranged inside the soft medium layers and used for providing an impurity containing space.
The beneficial effect of this scheme of adoption:
1. based on the problem that a metal net for filtering lithium battery slurry in the prior art is a single-layer filter net and the filtering effect is poor, the filter element adopts multiple layers of soft medium layers, and when impurities enter the filter element along with the slurry, part of impurity particles can be intercepted by the soft medium layer on the inner layer after passing through the outer soft medium layer, so that the lithium battery slurry can play a role of multi-stage filtering when flowing through the soft medium layers, more impurities can be blocked, the filtering is more thorough, and the filtering effect is more excellent. And the soft medium layers stacked layer by layer can form a larger dirt holding space between layers, so that the dirt holding capacity of the filter element can be improved.
2. Based on the problem that the filtering performance of the colloid impurities in the slurry is poor due to the adoption of hard filter screens such as metal meshes in the prior art, the soft medium layer is adopted in the invention, when external pressure is applied, the colloid impurities deform, and the soft medium layer also deforms, so that the side lines of the filter holes are bent, twisted and deformed, the filter holes are elongated or extruded and become irregular shapes of non-circular holes, meanwhile, the colloid impurities have large particle sizes and are solid structures, the filter holes are hollow structures, the deformation degrees of the colloid impurities and the filter holes are difficult to synchronize, and the deformed shapes and sizes are difficult to completely match, so that the deformed colloid impurities cannot pass through the deformed filter holes, the colloid impurities with large particle sizes are prevented from passing through the filter holes due to compression deformation, the colloid impurities in the slurry can be effectively filtered, and the filtering effect on the slurry is improved.
3. The soft medium layers are multilayer, the spacing layers are arranged in the soft medium layers, the filtering holes of a certain layer of soft medium layer are divided or partially shielded by the side lines or edges of the filtering holes of the adjacent soft medium or spacing layers, the filtering holes become small, colloid impurities are more difficult to pass through, and therefore the colloid impurities in the slurry are more effectively filtered.
4. The spacing layer is arranged in the soft medium layers to separate the two adjacent soft medium layers, so that the adjacent soft medium layers are prevented from being directly overlapped and wrapped, the wrapping is too thick, the slurry does not have good permeability, and the spacing layer can support a certain spacing space to contain impurities filtered out by the soft medium layers.
5. In order to facilitate the filtered slurry to pass through, the central rod is provided with a plurality of through holes, the inner barrier layer is arranged to prevent the soft medium layer from passing through the through holes under pressure and being pressed into the central rod, and the outer barrier layer firmly fixes the filter layer outside the central rod by wrapping the soft medium layer, so that the overall stability of the filter element is improved; the outer barrier layer can protect the soft medium layers and can contain the filtered impurities of the soft medium layers at the outermost sides.
Preferably, the filter layer comprises at least two soft medium layers with different filtering precisions, the soft medium layer with the high filtering precision is arranged closer to the central rod, the spacing layer is arranged in the same soft medium layer and/or between different soft medium layers, the filtering precision is gradually reduced from inside to outside of the central rod to form a gradient, so that impurities in different size ranges in the slurry are respectively filtered, the filtering effect is improved, meanwhile, the space utilization rate of the filter layer is improved, the impurities in different size ranges are stopped at different positions of the filter layer, the situations that the filtering precision is the same from inside to outside, the outer soft medium layer is saturated, and the inner soft medium layer is not completely utilized are avoided.
Preferably, the soft dielectric layer comprises a PP dielectric layer, a PBT dielectric layer, a PPS dielectric layer, a PA6 dielectric layer, an ECTFE dielectric layer, a PVDF dielectric layer and a PET dielectric layer, and the gram weight of the soft dielectric layer is set to be 35-70g/m2In the meantime.
Preferably, the filter mesh belt is wound on the outer part of the center rod to form the filter layer, the winding process is convenient for processing operation, and the adjacent two layers are in closer contact.
Preferably, the filter mesh belt comprises a support mesh belt and a soft medium belt attached to the support mesh belt, the support mesh belt is wound along the central rod from inside to outside in the radial direction and sequentially comprises a head section, a middle section and a tail section, the head section forms the inner barrier layer, the soft medium belt is attached to the middle section to form a soft medium layer, and the tail section forms the outer barrier layer.
Compared with the mode of winding a supporting mesh belt outside the central rod and gradually forming the inner barrier layer, the soft medium layer and the outer barrier layer, the structure of the filter element in the scheme is easier to realize, the processing technology is simplified, the processing difficulty is reduced, and the processing efficiency is improved.
Preferably, the soft medium belt is a single belt; or the soft medium belts are multiple, and the end surfaces of the adjacent soft medium belts are connected by projection on the supporting mesh belt; or the soft medium belts are multiple, and the projections of the end surfaces of the adjacent soft medium belts on the supporting mesh belt are distributed at intervals.
Preferably, adjacent soft medium belts are respectively positioned at two sides of the supporting mesh belt in the plurality of soft medium belts, and in the filter element processing process, the soft medium belts are attached to the middle section through pulling of a machine and comprise an unwinding end and a winding end, and if the adjacent soft medium belts are positioned at the same side, the machine is not conveniently pulled, the continuous production is not convenient, so that the adjacent soft medium belts are arranged at two sides of the supporting mesh belt.
Preferably, the soft medium belts include a first soft medium belt, a second soft medium belt and a third soft medium belt which are sequentially wound from inside to outside along the radial direction of the central rod, the first soft medium belt and the third soft medium belt are located on one side of the supporting mesh belt, the second soft medium belt is located on the other side of the supporting mesh belt, and the head section, the first soft medium belt, the second soft medium belt, the third soft medium belt and the tail section are sequentially wound for at least 1 circle.
Preferably, the soft medium belts include a second soft medium belt and a third soft medium belt which are sequentially wound from inside to outside along the radial direction of the central rod, the second soft medium belt and the third soft medium belt are respectively located at two sides of the support mesh belt, and the head section, the second soft medium belt, the third soft medium belt and the tail section are sequentially wound for at least 1 turn.
Preferably, when the soft medium tape includes a first soft medium tape, a second soft medium tape, and a third soft medium tape, the head section is wound 1 to 3 turns, the first soft medium tape is wound 1 to 2 turns, the second soft medium tape is wound 8 to 12 turns, and the third soft medium tape is wound 5 to 9 turns.
Preferably, when the soft medium tape includes a second soft medium tape and a third soft medium tape, the head section is wound by 1 to 3 turns, the second soft medium tape is wound by 8 to 12 turns, and the third soft medium tape is wound by 3 to 6 turns.
Preferably, when the soft medium belts include a first soft medium belt, a second soft medium belt and a third soft medium belt, the thickness of the support net belt is d, the thickness of the first soft medium belt is d1, the thickness of the second soft medium belt is d2, the thickness of the third soft medium belt is d3, and d, d1, d2 and d3 are satisfied, d 1: d 1:1.07-1.67, d 2: d 1:1.07-1.89, d 3: d is 1: 0.98-1.78.
Preferably, the first soft medium belt is a PP medium belt, the thickness of the PP medium belt is 600-750 mu m, and the gram weight is 40.5-49.5g/m2The air permeability is 3000-5000 mm/s. Preferably, the second soft medium belt is a PP medium belt, the thickness of the PP medium belt is 600-850 mu m, and the gram weight is 40.5-49.5g/m2The air permeability is 5000-7000 mm/s; preferably, the third soft medium belt is a PP medium belt, the thickness of the PP medium belt is 550-800 mu m, and the gram weight of the PP medium belt is 40.5-49.5g/m2The air permeability is 6000-9000 mm/s.
The diameter of the PP medium fiber can reach 1-5 microns, the superfine fiber filaments with unique capillary structures can increase the number and the surface area of the fiber filaments in unit area, the number of the fiber filaments is large, and contact points with colloid impurities are large, so that the colloid impurities can be intercepted more easily.
Preferably, the thickness of the support mesh belt is 600-750um, and the mesh number of the support mesh belt is 24-45 meshes, that is, 24-45 holes are formed in the area of each square centimeter. When guaranteeing the thick liquids flow, can play the supporting role to the melt-blown fabric again, prevent that the melt-blown fabric is inwards out of shape, provide simultaneously and receive dirty space.
Preferably, a plurality of spacing layers are included, the spacing layers are distributed from inside to outside along the radial direction of the central rod, and the thickness of the spacing layer far away from the central rod is larger than that of the spacing layer near the central rod. The filter element outside has been guaranteed to have great dirty space of receiving to correspond the large granule impurity that the outside filtered out.
Preferably, the outer barrier layer is fixed by thermal welding.
Preferably, the total porosity of the filter layer is 60% to 90%.
Preferably, the filtering precision of the filter element for the battery slurry filtering system is less than or equal to 300um, and the intercepting efficiency for different filtering precisions is more than or equal to 95%.
The other technical scheme adopted by the invention is as follows:
the battery slurry filtering system adopts the filter element for the battery slurry filtering system in any one technical scheme.
These features and advantages of the invention will be disclosed in more detail in the following detailed description and the accompanying drawings.
[ description of the drawings ]
The invention is further described with reference to the accompanying drawings in which:
fig. 1 is a schematic perspective view of a filter element for a battery slurry filtration system according to the present invention, when unfolded, wherein the filter mesh belt is in an open state.
Fig. 2 is a schematic representation of a filter belt of the present invention laid flat.
Fig. 3 is a top view of a filter cartridge for a battery slurry filtration system according to a third embodiment of the present invention.
Fig. 4 is a top view of a filter cartridge for a battery slurry filtration system according to a fourth embodiment of the present invention.
Fig. 5 is a block diagram of a battery slurry filtration system according to a fifth embodiment of the present invention.
Fig. 6 is a schematic view of a second embodiment of the present invention when the filter mesh belt is laid flat.
Reference numerals: a center rod 001; supporting the mesh belt 1; a head section 1 a; an intermediate section 1 b; a tail section 1 c; a first soft medium belt 2 a; a second soft medium belt 2 b; a third soft medium strip 2 c.
[ detailed description ] embodiments
The technical solutions of the embodiments of the present invention are explained and illustrated below with reference to the drawings of the embodiments of the present invention, but the following embodiments are only preferred embodiments of the present invention, and not all embodiments. Based on the embodiments in the implementation, other embodiments obtained by those skilled in the art without any creative effort belong to the protection scope of the present invention.
In the description of the present invention, it is to be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "clockwise", "counterclockwise", and the like, indicate orientations and positional relationships based on those shown in the drawings, and are used only for convenience of description and simplicity of description, and do not indicate or imply that the device or element being referred to must have a particular orientation, be constructed and operated in a particular orientation, and thus, are not to be considered as limiting the present invention.
Furthermore, the terms "first", "second" and "first" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include one or more of that feature. In the description of the present invention, unless otherwise specified, "a plurality" means two or more unless explicitly defined otherwise.
In the present invention, unless otherwise expressly specified or limited, the terms "mounted," "connected," "secured," and the like are to be construed broadly and can, for example, be fixedly connected, detachably connected, or integrally connected; can be mechanically or electrically connected; they may be connected directly or indirectly through intervening media, or they may be interconnected between two elements. The specific meanings of the above terms in the present invention can be understood by those skilled in the art according to specific situations.
In the present invention, unless otherwise expressly stated or limited, "above" or "below" a first feature means that the first and second features are in direct contact, or that the first and second features are not in direct contact but are in contact with each other via another feature therebetween. Also, the first feature being "on," "above" and "over" the second feature includes the first feature being directly on and obliquely above the second feature, or merely indicating that the first feature is at a higher level than the second feature. A first feature being "under," "below," and "beneath" a second feature includes the first feature being directly under and obliquely below the second feature, or simply meaning that the first feature is at a lesser elevation than the second feature.
Interpretation of terms: as used herein, the term "PP" refers to polypropylene; "PBT" means polybutylene terephthalate, "PPS" means polyphenylene sulfide, "PA 6" means Polyamide 6, "ECTFE" means ethylene chlorotrifluoroethylene copolymer, "PVDF" means polyvinylidene fluoride, and "PET" means polyethylene terephthalate.
The first embodiment is as follows:
as shown in fig. 1 to 2, the filter element for a battery slurry filtration system includes a central rod 001 and a filter layer disposed outside the central rod 001, the filter layer includes multiple layers of soft medium layers, an inner barrier layer disposed between the soft medium layers and the central rod 001 and used for preventing the soft medium layers from being pressed into the central rod 001, and an outer barrier layer disposed outside the soft medium layers and used for wrapping the soft medium layers, the inner barrier layer being disposed inside the soft medium layers and used for providing an impurity accommodating space. Based on the problem that a metal net for filtering lithium battery slurry in the prior art is a single-layer filter net and the filtering effect is poor, the filter element adopts multiple layers of soft medium layers, and the lithium battery slurry is filtered layer by layer, so that more impurities can be blocked, the filtering is more thorough, and the filtering effect is improved. Based on the problem that the filtering performance of the hard filtering nets such as metal nets and the like in the prior art is poor for filtering colloid impurities in the slurry, the invention adopts the soft medium layer, for the single-layer soft medium layer, when the single-layer soft medium layer is subjected to external pressure, the soft medium layer is deformed while the colloid impurities are deformed, the sidelines of the filtering holes are bent, twisted and deformed, the filtering holes are elongated or extruded to be changed into irregular shapes of non-circular holes, and simultaneously, because the colloid impurities have large grain diameter and are solid structures, the filtering holes are of a hollow structure, the deformation degrees of the filtering holes and the filtering holes are difficult to synchronize, and the deformed shapes and sizes are difficult to completely match, so that the deformed colloid impurities are difficult to pass through the deformed filtering holes, thereby prevent that the colloid impurity that the particle size is big from passing through the filtration pore because the compression deformation, can effectively filter the colloid impurity in the thick liquids, improve the filter effect to the thick liquids. Furthermore, the soft medium layers are multilayer, when impurities enter the filter element along with slurry, part of impurity particles can be intercepted by the soft medium layer on the inner layer after penetrating through the soft medium layer on the outer layer, and the filtering performance is improved. And the spacing layer is arranged in the soft medium layer, the filtering holes of a certain layer of soft medium layer are divided or partially shielded by the side lines or edges of the filtering holes of the adjacent soft medium or spacing layer, the filtering holes become small, and colloid impurities are more difficult to pass through, so that the colloid impurities in the slurry are more effectively filtered. The spacing layer is arranged in the soft medium layers to separate the two adjacent soft medium layers, so that the adjacent soft medium layers are prevented from being directly overlapped and wrapped, the wrapping is too thick, the slurry does not have good permeability, and the spacing layer can support a certain spacing space to contain impurities filtered out by the soft medium layers. In order to facilitate the filtered slurry to pass through, the central rod 001 is provided with a plurality of through holes, the inner barrier layer is arranged to prevent the soft medium layer from passing through the through holes under pressure and being pressed into the central rod 001, and the outer barrier layer firmly fixes the filter layer outside the central rod 001 by wrapping the soft medium layer, so that the overall stability of the filter element is improved; the outer barrier layer can protect the soft medium layers and can contain the filtered impurities of the soft medium layers at the outermost sides.
The soft dielectric layer comprises a PP dielectric layer, a PBT dielectric layer, a PPS dielectric layer, a PA6 dielectric layer, an ECTFE dielectric layer and a PVDF dielectric layerA substrate layer, a PET medium layer, a soft medium layer with a gram weight of 35-70g/m2In between, the larger the grammage, the higher the density and the denser the soft medium, the higher the filtration accuracy, but the lower the air permeability, the lower the flow rate of the slurry, so the selection of the grammage of the soft medium layer in the present invention requires a compromise between the filtration accuracy and the air permeability.
The better the quality is, the higher the filtration precision is, the higher the production process requirement is, and the higher the cost is, the gram weight of the soft medium layer is selected in the invention, so that the filtration precision requirement of the lithium battery slurry is met, and the economy is also considered.
In order to form a filtering gradient, the filtering layer comprises at least two soft medium layers with different filtering precisions, the soft medium layer with high filtering precision is arranged closer to the center rod 001, the spacing layer is arranged in the same soft medium layer and/or between different soft medium layers, the filtering precision is gradually reduced from inside to outside the center rod 001 to respectively filter the impurities with different size ranges in the slurry, the outer soft medium layer is firstly utilized to filter the impurities with larger size, so that the impurities with smaller size enter along with the slurry, and then the inner soft medium layer is utilized to filter the impurities, thereby improving the filtering effect, meanwhile, the space utilization rate of the filter layer is improved, impurities in different size ranges stay at different positions of the filter layer, and the conditions that the filtering precision is the same from inside to outside, the outer soft medium layer is saturated, and the inner soft medium layer is not completely utilized are avoided.
In order to simplify the manufacturing process, the outer portion of the center rod 001 is wound with a mesh belt to form a filter layer in this embodiment, and the contact between the adjacent two layers is made closer by the winding process.
The concrete structure of filter mesh belt is including supporting guipure 1, paste the soft medium area of establishing with supporting guipure 1, support guipure 1 radially from inside to outside coiling along well core rod 001, include head section 1a in proper order, interlude 1b and afterbody section 1c, head section 1a forms interior interlayer, soft medium area pastes and establishes in interlude 1b in order to form soft medium layer, afterbody section 1c forms outer interlayer, outer interlayer passes through the hot welding and fixes, outer interlayer also can adopt current other fixed modes that can realize in this scheme certainly.
Of course, the outer barrier layer may also be a part of the middle section 1b, i.e. the soft medium layer located at the outermost layer, and the support mesh tape 1 is wound outside the soft medium tape during winding to form the outer barrier layer.
Compared with the mode of winding the supporting mesh belt 1 outside the central rod 001 to gradually form the inner barrier layer, the soft medium layer and the outer barrier layer, the structure of the filter element in the scheme is easier to realize, the processing technology is simplified, the processing difficulty is reduced, and the processing efficiency is improved.
The number of the soft medium belts in this embodiment is multiple, and the projections of the end surfaces of the adjacent soft medium belts on the support mesh belt 1 are connected, and preferably, the adjacent soft medium belts are respectively located at two sides of the support mesh belt 1.
In the filter core course of working, the soft medium area passes through the pulling subsides of machine and establishes on interlude 1b, including unreeling end and rolling end, if adjacent soft medium area is located the homonymy, the pulling of the machine of not being convenient for, the serialization production of not being convenient for, consequently, establishes adjacent soft medium area in the both sides that support guipure 1.
Specifically, the soft medium belt in this embodiment includes a first soft medium belt 2a, a second soft medium belt 2b, and a third soft medium belt 2c wound in sequence from inside to outside along the radial direction of the center rod 001, where the filtering precision of the second soft medium belt 2b is greater than that of the first soft medium belt 2a, the filtering precision of the third soft medium belt 2c is greater than that of the second soft medium belt 2b, the first soft medium belt 2a and the third soft medium belt 2c are located on one side of the support mesh belt 1, the second soft medium belt 2b is located on the other side of the support mesh belt 1, and the head section 1a, the first soft medium belt 2a, the second soft medium belt 2b, the third soft medium belt 2c, and the tail section 1c are wound in sequence for at least 1 turn.
The impurities with larger size in the pulp are primarily filtered through a third soft medium belt 2c, after the impurities with smaller size pass through the third soft medium belt 2c along with the pulp, the pulp is secondarily filtered through a second soft medium belt 2b, the filtered impurities are contained in a supporting mesh belt 1 between the third soft medium belt 2c and the second soft medium belt 2b or a supporting mesh belt 1 between two adjacent layers of second soft medium belts 2b or a second soft medium belt 2b, after the pulp after secondary filtration passes through the second soft medium belt 2b, the pulp is finally and finely filtered through a first soft medium belt 2a, the finely filtered impurities are contained in the supporting mesh belt 1 between the second soft medium belt 2b and the first soft medium belt 2a or the supporting mesh belt 1 between two adjacent layers of first soft medium belts 2a or the first soft medium belt 2a, through filtering layer upon layer, effectively get rid of the impurity of various sizes in the thick liquids, promoted filter effect and space utilization.
In order to form a better filtering effect on the lithium battery slurry on the basis of controlling the production cost, in the embodiment, the head section 1a is wound by 1 to 3 turns, the first soft medium strip 2a is wound by 1 to 2 turns, the second soft medium strip 2b is wound by 8 to 12 turns, the third soft medium strip 2c is wound by 5 to 9 turns, and optimally, the head section 1a is wound by 3 turns, the first soft medium strip 2a is wound by 1 turn, the second soft medium strip 2b is wound by 10.5 turns, and the third soft medium strip 2c is wound by 7 turns.
In this embodiment, the thickness of the support mesh belt 1 is d, the thickness of the first soft medium belt 2a is d1, the thickness of the second soft medium belt 2b is d2, and the thickness of the third soft medium belt 2c is d3, in order to effectively filter impurities in the lithium battery while reserving a sufficient accommodation space, d1, d2 and d3 need to satisfy, d 1: d 1:1.07-1.67, d 2: d 1:1.07-1.89, d 3: d is 1: 0.98-1.78.
Each soft medium belt in the embodiment is preferably a melt-blown cloth layer with the gram weight of 40.5-49.5g/m2. The melt-blown fabric takes polypropylene (PP) as a main raw material, the fiber diameter can reach 1-5 microns, the superfine fiber yarns with unique capillary structures can increase the number and the surface area of the fiber yarns in unit area, the number of the fiber yarns is large, and the number of contact points with colloid impurities is large, so that the colloid impurities are more easily intercepted.
In order to improve the filtering effect of each medium layer and ensure the flow velocity of the slurry, the characteristic parameters of each soft medium belt in the implementation are as follows: the thickness of the first soft medium belt 2a is 600-; the thickness of the second soft medium belt 2b is 600-; the thickness of the third soft medium band is 550-800 mu m, and the air permeability is 6000-9000 mm/s.
Of course, when there are a plurality of soft medium belts, the projection intervals of the end faces of the adjacent soft medium belts on the support mesh belt 1 may be set.
Of course, when there are a plurality of soft medium belts, the projections of the adjacent soft medium belts on the support mesh belt 1 may be at least partially overlapped.
Of course, the soft medium belt can be a single soft medium belt, the whole single soft medium belt can have the same filtering precision, the single soft medium belt can also be segmented, and each segment adopts different filtering precision.
In order to effectively space two adjacent layers of soft medium belts and reserve enough accommodating space for filtered impurities, the thickness of the support mesh belt 1 in this embodiment is preferably 600-750um, and the mesh number of the support mesh belt is 24-45 meshes, so that the support mesh belt can support the meltblown fabric while ensuring the flow of the slurry, prevent the meltblown fabric from deforming inwards, and provide a dirt accommodating space.
The filter core of this embodiment includes the soft dielectric layer of multilayer, because every layer of soft dielectric in situ all sets up the wall, is equipped with a plurality of wall in the filter core, a plurality of wall along central rod 001 radially from inside to outside distribution, in order to provide the dirty space of receiving that has the gradient, the thickness of the wall of keeping away from central rod 001 is greater than the thickness of the wall of being close to central rod 001. Specifically, the filter mesh belt can be formed by compounding a single-layer support mesh belt 1 and a soft medium belt, so that after the filter mesh belt is wound, the support mesh belt 1 can form a single-layer spacing layer, and the thickness of the spacing layer is controlled by changing the thicknesses of different areas of the support mesh belt 1. Certainly, in order to realize the difference of the thicknesses of the spacer layers, some arrangements may be performed when the filter mesh belt is prepared, for example, when the support mesh belt 1 and the soft medium belt are combined, different positions are provided with the support mesh belt 1 with different layers, so as to realize the effect of large thickness of the spacer layer far away from the center rod 001 during winding.
Total porosity of the filter layer
The ratio of the total volume of micro-voids in an annular cylindrical volume contained in the filter layer to the annular cylindrical volume is expressed by
Wherein VPRefers to the total volume of the tiny voids, VBRefers to the total volume of the annular column contained by the filter layer. Because the whole filtering layer is in an annular column shape, V can be calculated by measuring the annular outer diameter and inner diameter and combining the height of the filter elementB(ii) a Pouring a volume of water (or low surface energy solution such as IPA solution) into the container, recording the volume of water, immersing the filter element in the water for 1 hr, observing the height of water in the container, and calculating the volume V of the solid part of the filter element, the central rod, the end cap and the filter layer1(ii) a Then separately taking the unassembled center rod and end cover, immersing the center rod and end cover in water, observing the rising height of water in the container, and calculating the volume V of the center rod and the end cover2(ii) a Thereby calculating VPThe specific numerical values of (A): vP＝VB-(V1-V2). Through measurement and calculation, the total porosity of the filter layer of the filter element for the lithium battery slurry filter system is 60-90%.
By selecting the melt-blown cloth with different performance parameters, the melt-blown cloth is wound into different filter elements with the filtering precision of less than 300 mu m, such as filter elements with the filtering precision of 300 mu m, 150 mu m and 15 mu m according to the scheme of the application. And then respectively carrying out filtration performance tests on the filter element with the precision of 300 microns (about 300 microns of impurity particles in filtrate passed by the filter element with the precision of 150 microns, about 150 microns of impurity particles in filtrate passed by the filter element with the precision of 150 microns, about 15 microns of impurity particles in filtrate passed by the filter element with the precision of 15 microns, and respectively testing the content of the impurity particles in the filtrate before and after filtration), and finding that the interception efficiency is more than or equal to 95 percent.
Example two:
as shown in fig. 6, the present embodiment is different from the first embodiment in that the soft medium belts include a second soft medium belt 2b and a third soft medium belt 2c which are sequentially wound from inside to outside along the radial direction of the central rod 001, the second soft medium belt 2b and the third soft medium belt 2c are respectively located at two sides of the support mesh belt 1, and the head section 1a, the second soft medium belt 2b, the third soft medium belt 2c and the tail section 1c are sequentially wound for at least 1 turn.
In order to form a better filtering effect on the lithium battery slurry on the basis of controlling the production cost, in the embodiment, the head section 1a is wound by 1 to 3 turns, the second soft medium strip 2b is wound by 8 to 12 turns, the third soft medium strip 2c is wound by 3 to 6 turns, and optimally, the head section 1a is wound by 2 turns, the second soft medium strip 2b is wound by 10 turns, and the third soft medium strip 2c is wound by 4.5 turns.
Example three:
as shown in fig. 3, the present embodiment is different from the first and second embodiments in that the support mesh belt 1 is segmented, that is, the head section 1a, the middle section 1b and the tail section 1c are all independent and unconnected, the soft medium belt is attached to the middle section 1b to form a soft medium layer, and the head section 1a, the soft medium layer and the tail section 1c are respectively and independently wound from inside to outside along the radial direction of the central rod 001 and are respectively and independently fixed.
The middle section 1b is divided into at least two independent and unconnected sections, preferably three sections, the first soft medium belt 2a, the second soft medium belt 2b and the third soft medium belt 2c are respectively attached to the three independent and unconnected sections, so that a first soft medium layer, a second soft medium layer and a third soft medium layer are formed, and the first soft medium layer, the second soft medium layer and the third soft medium layer are respectively and independently wound from inside to outside and are respectively and independently fixed.
Example four:
as shown in fig. 4, the present embodiment is different from the third embodiment in that the head section 1a, the first soft medium layer, the second soft medium layer, the third soft medium layer and the tail section 1c each include at least one turn, and the head section 1a, the first soft medium layer, the second soft medium layer, the third soft medium layer and the tail section 1c are sleeved one by one from inside to outside along the radial direction of the central rod 001 and are independently fixed one by one. In the first soft medium layer, each circle of the first medium belt 2a and the support mesh belt 1 compounded with the first medium belt are independently arranged before being sleeved, and are fixed after being sleeved.
The second soft medium layer and the third soft medium layer are arranged in the same way as the first soft medium layer.
Example five:
as shown in fig. 5, the lithium battery slurry filtering system includes:
a) respectively filtering a feeding system comprising an active material, an inactive material and a binder and a solvent, and then feeding the filtered system and the solvent into a stirring tank to be uniformly stirred and mixed to obtain slurry.
b) Filtering the slurry prepared in the step a) for the first time, and transferring the slurry to an iron remover for removing ferromagnetic substances for the first time;
c) transferring the slurry obtained in the step b) into a transfer tank, pressing the slurry into an iron remover through a screw pump to remove ferromagnetic substances again, and performing secondary filtration before the slurry enters the iron remover again;
d) transferring the slurry obtained in the step c) to a buffer tank, pressing the slurry into a coating head through a screw pump, and performing a coating process, wherein the slurry is filtered at least twice before entering the coating head.
At least one filtering step in the filtering system adopts the filter element for the lithium battery slurry filtering system in any embodiment.
The above embodiments are merely examples and do not limit the scope of the invention. On the basis of this, a person skilled in the art can envision other embodiments that perform the same function within the scope of the claims of the present invention.
While the foregoing is directed to embodiments of the present invention, the scope of the invention should not be limited thereby, and it will be apparent to those skilled in the art that the invention includes, but is not limited to, those illustrated in the drawings and described in the foregoing detailed description. Any modification which does not depart from the functional and structural principles of the invention is intended to be included within the scope of the claims.
Claims (17)
1. The filter element for the battery slurry filtering system is characterized by comprising a central rod and a filter layer arranged outside the central rod, wherein the filter layer comprises a plurality of layers of soft medium layers, an inner barrier layer and an outer barrier layer, the inner barrier layer is arranged between the soft medium layers and the central rod and used for preventing the soft medium layers from being pressed into the central rod, the outer barrier layer is arranged outside the soft medium layers and used for wrapping the soft medium layers, and the barrier layer is arranged inside the soft medium layers and used for providing an impurity containing space.
2. The battery slurry filtration system filter element of claim 1, wherein the filter layer comprises at least two soft media layers with different filter precisions, the soft media layer with high filter precision is disposed closer to the center rod, and the spacing layer is disposed within the same soft media layer and/or between different soft media layers.
3. The filter element for a battery slurry filtration system according to claim 1, wherein the soft dielectric layers comprise a PP dielectric layer, a PBT dielectric layer, a PPs dielectric layer, a PA6 dielectric layer, an ECTFE dielectric layer, a PVDF dielectric layer, a PET dielectric layer, and the grammage of the soft dielectric layers is set between 35-70 g/square meter.
4. The battery slurry filtration system cartridge of claim 1, 2 or 3, wherein a filter mesh tape is wrapped around the outside of the center rod to form a filter layer.
5. The battery slurry filtration system filter element of claim 4, wherein the filter mesh belt comprises a support mesh belt and a soft media belt attached to the support mesh belt, the support mesh belt is wound radially from inside to outside along the central rod and comprises a head section, a middle section and a tail section in sequence, the head section forms the inner barrier layer, the soft media belt is attached to the middle section to form the soft media layer, and the tail section forms the outer barrier layer.
6. The battery slurry filtration system filter cartridge of claim 5, wherein the soft media band is a single piece; or the soft medium belts are multiple, and the end surfaces of the adjacent soft medium belts are connected by projection on the supporting mesh belt; or the soft medium belts are multiple, and the projections of the end surfaces of the adjacent soft medium belts on the supporting mesh belt are distributed at intervals.
7. The battery slurry filtration system filter element of claim 6, wherein adjacent soft media strips of the plurality of soft media strips are positioned on opposite sides of the support web.
8. The battery slurry filtration system filter element of claim 7, wherein the soft media strips comprise a first soft media strip, a second soft media strip and a third soft media strip sequentially wound from inside to outside along the radial direction of the center rod, the first soft media strip and the third soft media strip are positioned on one side of the support mesh strip, the second soft media strip is positioned on the other side of the support mesh strip, and the head section, the first soft media strip, the second soft media strip, the third soft media strip and the tail section are sequentially wound at least 1 turn; or the soft medium belt comprises a second soft medium belt and a third soft medium belt which are sequentially wound from inside to outside along the radial direction of the central rod, the second soft medium belt and the third soft medium belt are respectively positioned at two sides of the supporting mesh belt, and the head section, the second soft medium belt, the third soft medium belt and the tail section are sequentially wound for at least 1 circle.
9. The battery slurry filtration system filter cartridge of claim 8, wherein when the flexible media strip comprises a first flexible media strip, a second flexible media strip, and a third flexible media strip, the head section is wound 1-3 turns, the first flexible media strip is wound 1-2 turns, the second flexible media strip is wound 8-12 turns, and the third flexible media strip is wound 5-9 turns; when the soft medium belt comprises a second soft medium belt and a third soft medium belt, the head section is wound for 1-3 circles, the second soft medium belt is wound for 8-12 circles, and the third soft medium belt is wound for 3-6 circles.
10. The battery slurry filter cartridge of claim 8, wherein when the flexible media strips include a first flexible media strip, a second flexible media strip, and a third flexible media strip, the support web has a thickness d, the first flexible media strip has a thickness d1, the second flexible media strip has a thickness d2, the third flexible media strip has a thickness d3, and the thicknesses d, d1, d2, and d3 are satisfied, d 1: d =1:1.07-1.67, d 2: d =1:1.07-1.89, d 3: d =1: 0.98-1.78.
11. The filter element of claim 8, wherein the first soft media tape is a PP media tape with a thickness of 600-2The air permeability is 3000-; or the second soft medium belt is a PP medium belt, the thickness of the PP medium belt is 600-850 mu m, and the gram weight is 40.5-49.5g/m2The air permeability is 5000-7000 mm/s; or the third soft medium belt is a PP medium belt, the thickness of the PP medium belt is 550-800 mu m, and the gram weight is 40.5-49.5g/m2The air permeability is 6000-9000 mm/s.
12. The filter element for battery slurry filtration system of claim 5, wherein the thickness of the support mesh belt is 600-750um, and the mesh number of the support mesh belt is 24-45 mesh.
13. The battery slurry filtration system cartridge of claim 1, comprising a plurality of spacer layers radially distributed from the inside to the outside along the central rod, the spacer layers further from the central rod having a thickness greater than the spacer layers closer to the central rod.
14. The battery slurry filtration system filter cartridge of claim 1, wherein the outer barrier layer is secured by thermal welding.
15. The filter cartridge of claim 1, wherein the filter layer has a total porosity of 60% to 90%.
16. The filter element for the battery paste filtering system according to claim 1, wherein the filtering precision of the filter element for the battery paste filtering system is less than or equal to 300um, and the intercepting efficiency for different filtering precisions is more than or equal to 95%.
17. A battery slurry filtration system, wherein the filtration system employs a filter cartridge for a battery slurry filtration system as claimed in any one of claims 1 to 16.
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN116351565A (en) * | 2023-06-01 | 2023-06-30 | 江苏时代新能源科技有限公司 | Recovery device and battery production system |
Citations (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US5122270A (en) * | 1989-04-11 | 1992-06-16 | Seitz-Filter-Werke Theo & Geo Seitz Gmbh & Co. | Filter cartridge or filter module consisting of flexible deep filter material |
| US20100044297A1 (en) * | 2008-08-19 | 2010-02-25 | Perry Equipment Corporation | Contaminant Adsorbent Fluted Filter Element |
| CN201426998Y (en) * | 2009-07-07 | 2010-03-24 | 杭州费尔过滤技术有限公司 | Filter element combining outside folding with inside winding |
| CN206214865U (en) * | 2016-06-30 | 2017-06-06 | 中天储能科技有限公司 | A kind of filter core of lithium battery slurries filtration |
| CN208362028U (en) * | 2018-05-25 | 2019-01-11 | 佛山市美的清湖净水设备有限公司 | filter element |
| CN208448762U (en) * | 2018-05-25 | 2019-02-01 | 佛山市美的清湖净水设备有限公司 | Composite filter element and water purifier |
| CN210528601U (en) * | 2019-06-21 | 2020-05-15 | 杭州科百特过滤器材有限公司 | Composite filter element |
| CN211847447U (en) * | 2019-12-09 | 2020-11-03 | 佛山市麦克罗美的滤芯设备制造有限公司 | Filter element, filter element and water purification equipment |
| CN212799723U (en) * | 2020-07-08 | 2021-03-26 | 佛山市麦克罗美的滤芯设备制造有限公司 | Composite filter element |
-
2021
- 2021-05-19 CN CN202110546218.7A patent/CN113509789A/en active Pending
Patent Citations (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US5122270A (en) * | 1989-04-11 | 1992-06-16 | Seitz-Filter-Werke Theo & Geo Seitz Gmbh & Co. | Filter cartridge or filter module consisting of flexible deep filter material |
| US20100044297A1 (en) * | 2008-08-19 | 2010-02-25 | Perry Equipment Corporation | Contaminant Adsorbent Fluted Filter Element |
| CN201426998Y (en) * | 2009-07-07 | 2010-03-24 | 杭州费尔过滤技术有限公司 | Filter element combining outside folding with inside winding |
| CN206214865U (en) * | 2016-06-30 | 2017-06-06 | 中天储能科技有限公司 | A kind of filter core of lithium battery slurries filtration |
| CN208362028U (en) * | 2018-05-25 | 2019-01-11 | 佛山市美的清湖净水设备有限公司 | filter element |
| CN208448762U (en) * | 2018-05-25 | 2019-02-01 | 佛山市美的清湖净水设备有限公司 | Composite filter element and water purifier |
| CN210528601U (en) * | 2019-06-21 | 2020-05-15 | 杭州科百特过滤器材有限公司 | Composite filter element |
| CN211847447U (en) * | 2019-12-09 | 2020-11-03 | 佛山市麦克罗美的滤芯设备制造有限公司 | Filter element, filter element and water purification equipment |
| CN212799723U (en) * | 2020-07-08 | 2021-03-26 | 佛山市麦克罗美的滤芯设备制造有限公司 | Composite filter element |
Non-Patent Citations (2)
| Title |
|---|
| 中国材料研究学会，黄伯云，韩雅芳，张增志: "《中国战略性新兴产业 新材料 环境工程材料》", 30 November 2018, pages: 41 - 42 * |
| 张家埭编: "《碳材料工程基础》", 30 April 1992, pages: 135 - 136 * |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN116351565A (en) * | 2023-06-01 | 2023-06-30 | 江苏时代新能源科技有限公司 | Recovery device and battery production system |
| CN116351565B (en) * | 2023-06-01 | 2024-04-09 | 江苏时代新能源科技有限公司 | Recovery device and battery production system |
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