115 results about "High diaphragm" patented technology

In order to solve the problem of insufficient electrolyte infiltration in the middle position of a pole piece of a winding type long and narrow battery in the prior art, the utility model provides a diaphragm and a lithium ion battery, the diaphragm comprises a base membrane layer and a PVDF (Polyvinylidene Fluoride) coating layer, the PVDF coating layer is arranged on the surface of the base membrane layer and comprises a first area and two second areas, and the first area and the second area are arranged on the surface of the base membrane layer. The first area is arranged in the middle of the diaphragm, the two second areas extend from the edge of the first area to the end part of the diaphragm in the length direction, and the porosity of the first area is greater than that of the second areas. According to the diaphragm provided by the utility model, the second region with small porosity is relatively high in overall density, so that the rigidity and the tensile resistance of the diaphragm are improved, that is, through the combination of the first region and the second region, the overall wettability of the diaphragm can be improved, and the mechanical strength of the diaphragm can be ensured; the electrochemical performance and the service life of the lithium ion battery are improved.

The invention discloses a method and a system for efficiently removing a diaphragm of a non-liquid-injected roll core and accurately separating a positive pole piece and a negative pole piece. The method comprises the following steps: S1, carrying out primary slice dissociation; s2, primary winnowing and coarse removal; s3, secondary slicing and refined hydrolysis; s4, secondary winnowing and fine removal; s5, size grading; and S6, adaptive color selection. According to the method, traditional shredding is replaced by grading slicing, structural lamination of the materials in the treatment process is fundamentally avoided, the high removal rate of the diaphragms and high-precision sorting of pole piece materials in different forms are sequentially achieved, and the purity and process efficiency of overall recycled products are remarkably improved.

The invention provides a diaphragm combined ceramic coating, a coated diaphragm and a preparation method. The diaphragm combined ceramic coating comprises a diaphragm base membrane, a first coating, a second coating and a third coating, the first coating is coated on the surface of the diaphragm base membrane; the second coating is coated on the surface of the first coating; the surface of the second coating is coated with the third coating; the first coating and the second coating comprise one or more ceramic particles; the third coating comprises one or more organic polymer materials; the thickness range of the first coating is 0.2-2 microns; the thickness range of the second coating is 1-5 microns; the thickness range of the third coating is 0.5-3 microns; the ceramic particles are non-spherical particles, and in practical application, the self-discharge of a battery cell can be reduced, and the porosity of the battery cell can be improved, so that the liquid retention effect of the diaphragm is improved, and the electrical performance and the safety performance of the battery are improved.

A diaphragm and a preparation method thereof belong to the technical field of diaphragms. The preparation method of the diaphragm comprises the following steps: obtaining a casting sheet containing polyethylene and a pore-forming agent; and sequentially stretching and extracting the cast sheet for multiple times to obtain the diaphragm. Wherein the multiple stretching comprises transverse stretching, longitudinal stretching and two-way synchronous stretching. Or the multiple times of stretching comprise multiple times of transverse stretching and multiple times of longitudinal stretching, and transverse stretching and longitudinal stretching are alternately carried out. The multiplying power ratio of any two times of stretching is 1: (0.8-1.2), the preheating temperature of transverse stretching is 105-125 DEG C, the stretching temperature is 95-120 DEG C, and the stretching temperature is not higher than the preheating temperature. According to the method for preparing the diaphragm, high-magnification stretching can be realized, the probability of slipping and diaphragm rupture in the stretching process can be reduced, and the specific needling strength of the diaphragm can be improved.

The invention relates to the technical field of diaphragm preparation, in particular to a preparation method of an alkaline electrolyzed water diaphragm based on non-amphoteric hydroxide. The composite alkaline electrolytic water diaphragm is prepared by selecting Fe (OH) 3, Ni (OH) 2, Mg (OH) 2 and Al (OH) 3 as inorganic fillers, and the mass ratio of the inorganic fillers to PSF to PVP is 4: 3: 2. Compared with the prior art, the method has the advantages that the content of the organic filler in the diaphragm is reduced, the chemical stability of the diaphragm is favorably improved, the operation is simple and convenient, the cost is low, the yield is high, and the diaphragm has the characteristics of low surface resistance and high air tightness.

The invention relates to the technical field of batteries, in particular to a composite diaphragm, a preparation method thereof and a secondary battery. The composite diaphragm comprises: a base film; the coating is arranged on the surface of at least one side of the base film in the thickness direction, and the coating comprises a composite material; the composite material comprises polyimide fibers and a solid electrolyte coating at least part of the surface of the polyimide fibers. According to the composite diaphragm, the coating of the composite diaphragm contains the composite material, so that the lithium ion flux can be improved, the lithium deposition is uniform and compact, the growth of lithium dendrites is inhibited, the thermal shrinkage performance and mechanical strength of the diaphragm can be greatly improved, and the volume change in the charging and discharging process of a lithium metal negative electrode can be coped with; and meanwhile, the use amount of the electrolyte can be reduced, so that the cycle performance, the rate capability and the safety performance of the battery are improved.

The utility model discloses a waterproof hammer diaphragm type component of an expansion tank in the technical field of expansion tanks, which comprises an expansion tank main body, the bottom of the expansion tank main body is fixedly connected with supporting legs, and the waterproof hammer diaphragm type component can guide a diaphragm component to be placed in the expansion tank main body through the sliding connection between a guide strip and a guide plate. The mounting position of the bottom of the diaphragm assembly can be limited through clamping of the bottom of the limiting plate and the expansion tank body, the mounting position of the top of the diaphragm assembly can be limited through clamping of the extension strip and the built-in ring, the stability of the diaphragm assembly in the mounting and using process is improved, follow-up quick disassembly and replacement of the diaphragm assembly are facilitated, mixing of gas and water is avoided, and the service life of the diaphragm assembly is prolonged. Normal adjustment of the pressure of the expansion tank system is guaranteed, buffer protection can be conducted on one side of the diaphragm assembly through the spring telescopic rod and the arc-shaped elastic piece, therefore, pressure can be buffered together with elastic deformation of the diaphragm assembly, and the water hammer preventing effect is enhanced.

This application relates to a method, system, and storage medium for airtightness testing of a diaphragm accumulator, relating to the field of accumulator technology. The method includes acquiring preparation completion trigger information of the diaphragm accumulator; acquiring test plan information of the diaphragm accumulator based on the preparation completion trigger information; controlling a preset hydraulic system to perform a liquid filling test on the diaphragm accumulator according to the test plan information to determine pressure detection information; analyzing the pressure detection information and the test plan information to determine the liquid pressure information of the hydraulic system; determining whether the pressure detection information meets the requirements of the liquid pressure information; if it does not meet the requirements, issuing a warning according to a preset non-compliance warning message; if it meets the requirements, issuing a warning according to a preset compliance warning message. This application improves the accuracy of airtightness testing of diaphragm accumulators.

The application discloses a diaphragm with a self-layering coating, a preparation method thereof and a related secondary battery and an electric device. A battery diaphragm comprises a base film and a coating arranged on at least one surface of the base film, wherein the coating is obtained by one-time coating of a slurry, the slurry comprises an amino-modified organic silicon polymer, an amino-modified inorganic filler and an epoxy resin, the content of the amino-modified organic silicon polymer on the upper surface of the coating is denoted as V1, the content of the amino-modified organic silicon polymer on the lower surface of the coating is denoted as V2, and V1>V2. According to the embodiment of the application, the heat resistance and the adhesion of the base film can be simultaneously improved by one-time coating, and the heat shrinkage resistance of the diaphragm can be improved by the amino-modified organic silicon polymer, the amino-modified inorganic filler and the epoxy resin.

The diaphragm structure comprises a base membrane layer, ceramic layers, a first bonding layer and a second bonding layer, and the ceramic layers are coated on the two side surfaces of the base membrane layer; the surface, far away from the base film layer, of the ceramic layer is coated with a first bonding layer; the base film layer, the ceramic layer and the first bonding layer are equal in width; the edges of the two sides of the face, away from the ceramic layer, of the first bonding layer are coated with second bonding layers in the length direction of the base film layer. The edge of the first bonding layer is coated with the second bonding layer, so that the bonding capacity of the edge of the diaphragm can be effectively improved, the diaphragm and a pole piece can be highly attached in the hot pressing process of the core package, the polarization internal resistance of the lithium ion battery in circulation is reduced, and the purple edge phenomenon of the pole piece is relieved.

The invention provides a diaphragm and a lithium ion battery comprising the same, and relates to the technical field of lithium ion batteries, the diaphragm comprises a polymer, a polymeric monomer of the polymer contains F and Cl ortho-substituted phenyl, acrylonitrile and a benzene ring, the adsorption capacity of the diaphragm to an electrolyte can be improved, the interfacial compatibility of the diaphragm and the electrolyte is improved, and the performance of the diaphragm is improved. The internal resistance of the battery is reduced, dendritic crystal penetration can be effectively inhibited, and the thermal stability of the diaphragm is improved.

The invention discloses a two-dimensional nanosheet composite solid polymer electrolyte diaphragm and preparation and application thereof, the two-dimensional nanosheet composite solid polymer electrolyte diaphragm comprises a polymer matrix, a lithium salt and an additive, the additive is a two-dimensional nanosheet which serves as a skeleton structure in the polymer matrix and is arranged in a plane array perpendicular to the diaphragm, the two-dimensional nanosheet is a composite nanosheet formed by stacking a two-dimensional inorganic material and a two-dimensional metal-organic framework material layer by layer. According to the scheme, the two-dimensional nanosheet has the characteristics that the two-dimensional nanosheet has rich functional groups and a two-dimensional structure, and directional channels can be formed between layers; according to the present invention, the two-dimensional nano-sheet can achieve the rich interaction with the polymer molecules and the lithium ions, can provide the rich ion transmission path, can effectively improve the electrochemical performance of the polymer electrolyte, can improve the mechanical property of the diaphragm through the hydrogen bond formed between the two-dimensional nano-sheet and the polymer, and can further improve the processing efficiency. The processing technology of the diaphragm has the characteristics of simplicity and convenience in operation and simple process, and is suitable for industrial production.

The invention discloses a diaphragm, a secondary battery and an electric device, and belongs to the technical field of batteries, the diaphragm comprises a polyimide film, the polyimide film contains a modified element, the modified element comprises an S element, and at least part of the S element exists in the form of-S-S-. The polyimide film comprises an S element, at least part of the S element exists in the form of-S-S-(disulfide bond), when the battery is short-circuited or locally overheated to cause the temperature of the diaphragm to be higher than or equal to 120 DEG C, the disulfide bond is broken by short circuit or high temperature to form free sulfur atoms and sulfydryl, and after the temperature is reduced to about 80 DEG C, the sulfur atom and sulfydryl are separated from each other. Sulfur atoms are recombined into disulfide bonds through diffusion to repair cracks or defects, and the disulfide bonds can trigger a fracture-recombination process through heat or an electric field to drive a macromolecular chain to slide and crosslink, so that the cracks are repaired, the thermal stability of the diaphragm is effectively improved, the thermal shrinkage of the diaphragm is reduced, and the cycling stability of the secondary battery is effectively improved.

This invention relates to the field of battery technology, and more specifically, to an electrode assembly, its fabrication method, and a battery. The invention achieves this by configuring an electrode assembly with a specific structure that satisfies the following relationships: 0.05F ≤ T / W ≤ 0.3F and 0.3 ≤ 5T. g / (H×T r With a value ≤0.7, the problem of the outermost diaphragm of the electrode assembly sticking to the hot press plate after hot pressing can be avoided, thereby preventing delamination inside the electrode assembly and improving production yield and electrical performance consistency. In addition, it can also improve the wettability of the diaphragm, and the diaphragm wettability can be increased by more than 80%, and the hot box can pass 180℃.

The invention discloses a high-porosity wet-process diaphragm and a preparation method thereof in the technical field of battery diaphragms, the high-porosity wet-process diaphragm is composed of a porous base membrane and a diaphragm coating, and the porous base membrane is prepared from the following components: polyolefin powder, glycidyl methacrylate, an initiator, a diluent and an extractant. According to the present invention, the mode of modifying polyolefin is provided, the epoxy group is introduced, and then the imidazole group is introduced, such that the in-situ polymerization of the organic metal frame material on the base membrane surface is achieved, and the diaphragm coating covalently bonded with the base membrane is generated so as to improve the porosity and the thermal stability of the diaphragm so as to improve the cycle performance of the diaphragm.

The utility model discloses a novel diaphragm structure of a storage battery, which belongs to the technical field of storage battery diaphragms and comprises a fiber diaphragm, a non-woven fabric layer and a PE (polyethylene) diaphragm layer. The non-woven fabric layer and the PE diaphragm layer are adhered to the two sides of the glass fiber diaphragm. The diaphragm structure is composed of the fiber diaphragm, the non-woven fabric layer and the PE diaphragm layer, and due to the arrangement of the non-woven fabric layer and the PE diaphragm layer, the air permeability and the structural strength of the diaphragm structure are improved, the service life of the diaphragm structure is prolonged, and the using effect of the diaphragm structure is improved. The non-woven fabric layer is formed by coating glue and silicon dioxide powder on the surface of the non-woven fabric, silicon dioxide has high liquid absorption capacity, and the liquid absorption capacity of the whole diaphragm structure is improved. The PE diaphragm layer is formed by coating glue and carbon black powder on the surface of a PE diaphragm; and the carbon black has good conductivity, so that the conductivity of the whole diaphragm structure is improved.

The invention provides a diaphragm type pressure detection device, a manufacturing method and semiconductor equipment, relates to the technical field of semiconductor equipment, and is used for solving the problem of how to improve the consistency of diaphragm tightening of the diaphragm type pressure detection device. Specifically, the diaphragm type pressure detection device comprises a first shell, a diaphragm and a first outer frame, and the diaphragm is located on one side of the first shell; the first outer frame is connected to the side, facing the first shell, of the diaphragm, surrounds the first shell and is in interference fit with the first shell so as to tighten the diaphragm; a detection cavity is defined by the first outer frame, the first shell and the membrane, and the detection cavity is used for being communicated with a to-be-detected cavity.

The utility model relates to the technical field of booster pump diaphragm assemblies, and discloses a diaphragm assembly suitable for a booster pump, which comprises a diaphragm piece, a through hole is arranged on the outer side surface of the diaphragm piece, a pressure groove is arranged on the outer side of the upper surface of the diaphragm piece, and a first shell and a second shell are arranged on the outer side surface of the diaphragm piece. The inner wall of the first shell and the inner wall of the second shell make contact with the outer side face of the diaphragm piece. According to the diaphragm assembly suitable for the booster pump, an insertion rod is inserted into an insertion hole, so that a first shell and a second shell clamp a diaphragm piece, the stability of the diaphragm piece is indirectly improved, the strength of the diaphragm piece is improved, meanwhile, due to the arrangement of a plurality of groups of through holes, a small part of water flow or gas can pass through, and the stability of the diaphragm piece is improved. By means of the structure, stress borne by the diaphragm piece can be reduced in the impact and agitation process of the diaphragm piece, the strength of the diaphragm piece in the using process is indirectly improved, and therefore the diaphragm piece is not prone to damage, and the service life of the diaphragm piece is greatly prolonged.

The utility model relates to the technical field of battery production, and particularly discloses lamination equipment which comprises a lamination platform, a first pressing piece, a second pressing piece and a cutter, and a lamination station is arranged on the lamination platform. In the process of carrying out the lamination process on the lamination station, the first pressing piece can tightly press the material; and when the diaphragm needs to be cut off by the cutter after lamination is completed, the second pressing piece can tightly press the diaphragm, so that the end part of the cut-off diaphragm is still fixed on the lamination platform. Wherein the firm degree of fixation of the diaphragm can be improved in a mode of pressing by the second pressing piece, on one hand, the condition that the diaphragm is wrinkled when the diaphragm is cut off by the cutter is reduced, and on the other hand, the lamination efficiency is favorably improved, so that the overall operation efficiency is improved.

The invention discloses a hydrogen refueling station diaphragm compressor system and a control method. The technical problem that an O-shaped ring of an air inlet and outlet valve of a diaphragm compressor is frequently melted and fails is mainly solved. The diaphragm compressors in the diaphragm compressor system of the hydrogen refueling station are respectively connected with different hydrogen inlet pipelines through corresponding branches, so that the diaphragm compressors working under a low-pressure working condition can realize high-pressure hydrogen inlet by switching high-pressure hydrogen inlet pipelines, and the diaphragm compressors are cooled through high-pressure operation; and meanwhile, based on the T-S control model and a corresponding clustering radius self-adaptive adjustment mechanism, dynamic adaptive adjustment of the operating parameters of the diaphragm compressor system is achieved, so that the purpose of stepped increase of the operating duration of the diaphragm compressor is achieved, and the operating efficiency and safety of the diaphragm compressor system are improved.

The present application relates to the field of winding machine lithium battery automatic winding machine and its intelligent winding control method, including installation panel, installation panel is provided with first diaphragm unwinding mechanism and second diaphragm unwinding mechanism for conveying diaphragm, and installation panel is provided with first pole piece unwinding mechanism and second pole piece unwinding mechanism for conveying pole piece, and installation panel is provided with winding mechanism for winding diaphragm and pole piece, the installation panel is provided with the pre-winding correction mechanism for the pole piece and diaphragm, the heating gas pipe for heating diaphragm and pole piece is arranged on the pre-winding support seat, the present application is accurately centered by pre-winding correction mechanism Diaphragm and pole piece are attached, further reduce the displacement of unwinding transmission process, at the same time, by heating diaphragm and pole piece, it is helpful to improve the softness and ductility of pole piece and diaphragm Adhesion, improve the close fit of diaphragm and pole piece winding, improve production efficiency and quality.

The utility model discloses a diaphragm piece and a diaphragm pump, comprising a first diaphragm, a second diaphragm and a third diaphragm, the convex ring is arranged on one end face of the diaphragm body and is close to the edge of the diaphragm body, and the convex ring is annularly arranged in the circumferential direction of the diaphragm body; the end face, provided with the protruding ring, of the diaphragm body is a plane. By the adoption of the structure, the sealing performance of the diaphragm piece after the diaphragm piece is installed on the diaphragm pump can be effectively improved, and the diaphragm piece is simple in structure and convenient to manufacture.

The invention discloses a high-heat-resistance solid-state electrolyte composite diaphragm and a preparation method thereof, and relates to the technical field of solid-state electrolyte composite diaphragms.The high-heat-resistance solid-state electrolyte composite diaphragm is obtained by adopting modified polysiloxane as a solid-state electrolyte and preparing a solid-state electrolyte coating on a base diaphragm. The heat resistance and the ionic conductivity of the diaphragm are improved, so that the safety and the charge-discharge efficiency of the battery are improved; and the solid electrolyte is in close contact with the electrode, so that the interface impedance can be greatly reduced, and the addition amount of the liquid electrolyte during battery preparation is reduced, thereby reducing the cost.

The invention discloses a diaphragm as well as an electrochemical device and an electronic device comprising the diaphragm, and belongs to the technical field of energy storage.The refractive indexes of a base film and a coating and the Dv90 particle size, the Dv50 particle size and the Dv10 particle size of inorganic filler in the coating are controlled to meet the condition that W is larger than or equal to 0.8 and smaller than or equal to 1, so that the heat shrinkage resistance of the diaphragm can be effectively improved, the structural stability of the diaphragm is effectively improved, and the service life of the diaphragm is prolonged. According to the present invention, the stable structure of the diaphragm during the long cycle process is ensured, the hole blocking and damage phenomena are avoided, the ionic conductivity is effectively improved, the lithium ion de-intercalation is promoted, the lithium ion transmission rate is improved, the rate performance of the electrochemical device is effectively improved, the electrolyte infiltration effect is effectively improved, the electrolyte retention property is improved, and the service life is prolonged. Therefore, the cycle life of the electrochemical device is obviously prolonged.

The invention provides a diaphragm as well as a preparation method and application thereof, and relates to the technical field of lithium ion batteries. The preparation method of the diaphragm comprises the following steps: S1, carrying out modification treatment on black phosphorus to obtain a modified black phosphorus composite material; s2, uniformly stirring the modified black phosphorus composite material, a dispersing agent, water, a functional component, a thickening agent and a binding agent to obtain diaphragm slurry; and S3, coating the surface of a base membrane with the diaphragm slurry, and airing to obtain the diaphragm. The diaphragm provided by the invention not only can improve the wettability of the diaphragm to an electrolyte, but also can be used for transmitting lithium ions, has excellent ionic conductivity, and is beneficial to improving the cycle performance of a battery.

The invention provides a coated diaphragm with high insulation, high porosity and high thermal stability, a preparation method and a battery. The coated diaphragm comprises a diaphragm base membrane, a first coating, a second coating and a third coating or the diaphragm base membrane, a first functional coating and a second functional coating, the first coating is coated on the surface of the diaphragm base membrane; the second coating is coated on the surface of the first coating; the surface of the second coating is coated with the third coating; the first coating and the second coating comprise one or more ceramic particles; the third coating comprises one or more organic polymer materials; the thickness range of the first coating is 0.2-2 microns; the thickness range of the second coating is 1-5 microns; the thickness range of the third coating is 0.5-3 microns; the ceramic particles are non-spherical particles; in practical application, the self-discharge of the battery cell can be reduced, and the porosity of the battery cell can be improved, so that the liquid retention effect of the diaphragm is improved, and the electrical performance and the safety performance of the battery are improved.

[Object] To provide a technology or the like capable of improving driving efficiency of a diaphragm pump.[Solving Means] A diaphragm pump (10) according to the present technology includes a first diaphragm (1a), a second diaphragm (1b), and an adjustment portion (11). The first diaphragm (1a) includes a first member including a first elastic portion (5a), and a first drive unit that elastically deforms the first elastic portion (5a) by drive of the first drive unit. The second diaphragm (1b) includes a second member that includes a second elastic portion (5b) and forms a space (13) with the first member, a fluid flowing in the space, and a second drive unit that elastically deforms the second elastic portion (5b). The adjustment portion (11) is provided to at least one of the first diaphragm (1a) or the second diaphragm (1b) and is for adjusting a resonant frequency of the at least one of the first diaphragm (1a) or the second diaphragm (1b).

The application discloses a functional diaphragm for lithium-sulfur batteries and a preparation method and application thereof, and the preparation method comprises the following steps: coating a first slurry on the positive electrode side of a base film to obtain a first coating layer on the base film, coating a second slurry on the negative electrode side of the base film to form a second coating layer, and obtaining the functional diaphragm for lithium-sulfur batteries, wherein the preparation method of the first slurry is as follows: mixing a dispersing agent with a first solvent, uniformly stirring, then adding a carbon conductor and a first binder, uniformly stirring, and sanding to obtain the first slurry; and the preparation method of the second slurry is as follows: adding an unsaturated carboxylic acid and a second binder into a second solvent, uniformly stirring, and obtaining the second slurry, wherein the unsaturated carboxylic acid is an alkenoic acid. The preparation method can improve the ion conductivity of the diaphragm, is beneficial to reducing battery polarization, and thus improves the rate performance of the battery.

The present invention provides a diaphragm valve capable of improving the aligning performance of a diaphragm, maintaining the sealing performance of a valve seat, and further improving the sealing performance of the valve seat, even when the thrust force for sealing the valve seat is suppressed to be small, in a freely detachable / mountable configuration having an assembly tolerance. A diaphragm valve (1) is provided with a diaphragm member (70) disposed so as to be in contact with the tip of a rod (50), a diaphragm (60) is brought into a valve-closed state in which the diaphragm (60) is in contact with a valve seat (44) via the diaphragm member (70) pressed by the rod (50) in the valve-closing direction, the tip surface (53a) of the rod (50) has a spherical shape, and the diaphragm member (70) is provided with a recess (71) in which the tip of the rod (50) is inserted and mounted. The inner bottom surface (71a) of the recess (71) has a spherical shape having a radius of curvature larger than the radius of curvature of the distal end surface (53a) of the rod (50) and having the central portion as the lowest surface.

The utility model discloses a manufacturing device of a lithium ion diaphragm, which comprises an extraction mechanism and a secondary stretching mechanism, and further comprises an edge cutting mechanism, the edge cutting mechanism is used for cutting edges of the diaphragm to obtain an edge-cut diaphragm, and the edge cutting mechanism is arranged on the rear side of the extraction mechanism; the edge ironing mechanism is used for heating the edge of the edge cutting diaphragm, the edge ironing mechanism is located between the edge cutting mechanism and the secondary stretching mechanism, and the edge ironing mechanism comprises a heating unit arranged at the edge position of the edge cutting diaphragm. According to the manufacturing device of the lithium ion diaphragm, the transverse tensile strength of the diaphragm is improved while the tensile ratio of the diaphragm is high, and the trimmed diaphragm is not easy to pull apart.