58 results about "High diaphragm" patented technology

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 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.

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 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.

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 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 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 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 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.

[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 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.

The utility model discloses a kind of pneumatic diaphragm valves, it is related to pneumatic diaphragm valve technical field, including valve body, the top of valve body is provided with valve seat, and the top of valve seat is provided with mounting seat and pneumatic driver, the bottom of pneumatic driver is provided with valve stem, and the bottom of valve stem is provided with diaphragm assembly, diaphragm assembly includes diaphragm main body, the top of diaphragm main body is provided with mounting ring, and the bottom of mounting ring is provided with limit ring, the top of mounting ring is provided with recess and plug-in slot.The utility model is clamped in the inside of clamping groove by being set in the bottom of mounting ring Clamping ring, and the limit ring of mounting seat bottom is clamped in the inside of recess, to realize the limit connection of mounting ring and diaphragm main body, improve the sealing effect when diaphragm main body and valve seat connect, and limit plug-in rod is inserted in the inside of plug-in slot by being set, further the use stability of mounting ring and diaphragm main body, prevent diaphragm main body and mounting ring from sliding when using.

The invention relates to the technical field of batteries, in particular to a battery. The battery comprises a diaphragm, a negative plate, a positive plate and an electrolyte, the diaphragm comprises a carrier layer and a coating, the coating corresponding to a negative electrode active layer in the negative plate is composed of first particles, the coating corresponding to a positive electrode active layer in the positive plate is composed of first particles and second particles, the components of the first particles comprise an ester group-containing polymer, and within the area of 100 [mu] m * 100 [mu] m of the surface of the coating, the component of the second particles is a polymer containing an ester group. The quantity of the primary particles of the first particles with the particle size smaller than or equal to 0.3 mu m accounts for 0.01%-4% of the quantity of the primary particles of the first particles; the weight ratio of the cyclic carbonate to the fluoroethylene carbonate in the electrolyte is (0.2-1.5): 1. According to the battery disclosed by the invention, a relatively stable and flexible SEI film is formed on the surface of the negative plate through synergistic cooperation of the diaphragm and the electrolyte, so that the interface stability of the diaphragm and the negative plate is improved, and the high-temperature long-cycle performance of the battery is improved.

The utility model discloses an adjustable diaphragm compressor cylinder head supporting device, which relates to the technical field of diaphragm compressors and comprises channel steel, upper base plates, puller bolts and supporting pads, the upper base plates are symmetrically arranged at the lower ends of the two sides of the channel steel and detachably connected with a bottom pry of the diaphragm compressor, tensioning welding blocks are symmetrically arranged on the two sides of the top of the channel steel, and the puller bolts are detachably connected with the supporting pads. Nuts are symmetrically arranged on the inner side and the outer side of the tensioning welding block, puller bolts are connected into the nuts on the two sides of the tensioning welding block in a threaded mode, the inner ends of the puller bolts are rotationally connected to a supporting pad in sliding connection with the channel steel, and limiting baffles are symmetrically arranged on the positions, on the two sides of the supporting pad, of the channel steel. The supporting pad can effectively absorb vibration of the cylinder head, and the stability and reliability of the diaphragm compressor are improved; the supporting force of the supporting pad is adjusted through the puller bolt, the supporting pad adapts to the requirements under different working conditions, the upper side of the supporting pad is a section of curvature surface, it is guaranteed that the surface is completely attached to the cylinder head, and the cylinder head of the diaphragm compressor is borne.

The invention provides a diaphragm as well as a preparation method and application thereof. The diaphragm at least comprises a base membrane, the coating is arranged on at least one side of the base membrane, the coating on at least one side at least comprises solid electrolyte particles, and the material of the solid electrolyte particles comprises one or a mixture of two of lithium titanium phosphate and oxide. According to the diaphragm as well as the preparation method and the application thereof, the stability of the diaphragm to an electrode plate can be ensured, the insulativity of the diaphragm is improved, the production cost of the diaphragm is reduced, and the diaphragm is suitable for commercial application.

The embodiment of the invention provides a diaphragm and a preparation method thereof, a battery, a battery pack and electric equipment. The diaphragm comprises a base film, the base film comprises a polyethylene layer and a polypropylene layer arranged on at least one side of the polyethylene layer, and the polyethylene layer comprises polyethylene and a polyolefin elastomer. The safety performance and the mechanical performance of the diaphragm can be improved.

The invention relates to a diaphragm and a preparation method and application thereof, the diaphragm comprises a base material and a coating coated on at least one side surface of the base material, and the coating comprises ceramic and lithium phytate; wherein the mass percent of the ceramic in the coating is 60%-93%, and the mass percent of the lithium phytate in the coating is 2%-20%. According to the scheme provided by the invention, the ceramic in the coating of the diaphragm is mixed with the lithium phytate, and the ceramic and the lithium phytate have a synergistic effect, so that the mechanical property of the diaphragm is ensured, the electrolyte wettability of the diaphragm is improved, the side reaction of the electrolyte is inhibited, and the cycling stability of the battery is improved.

The application provides a diaphragm and a battery comprising the diaphragm. By adding polymer microspheres with a melting point of 90-130 DEG C in the ceramic layer, the diaphragm realizes closed pores before 130 DEG C, insulates lithium ion shuttling between the positive and negative electrodes in the battery, and achieves the purpose of improving safety. Meanwhile, a heat-resistant polymer layer is coated on the surface of the ceramic layer, so that the diaphragm will not break at high temperature, the blocking effect of the diaphragm at high temperature is improved, the safety performance of the battery is improved, and further, a graphite containing surface-coated amorphous carbon is matched with the negative active material, so that the fast charging performance of the battery can be significantly improved, and the prepared battery can simultaneously consider the fast charging performance and the safety performance.

The application 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, a coating layer arranged on at least one side surface of the base film along the thickness direction, and the coating layer comprises a composite material; the composite material comprises polyimide fibers and a solid-state electrolyte coated on at least part of the surface of the polyimide fibers. In the composite diaphragm, the coating layer of the composite diaphragm contains the composite material, the lithium ion flux can be improved, the lithium deposition is uniform and dense, the growth of lithium dendrites is inhibited, the thermal shrinkage performance and the mechanical strength of the diaphragm can be greatly improved, the volume change in the charging and discharging process of the lithium metal negative electrode can be coped with, the use amount of electrolyte can be reduced, and the cycle performance, the rate performance and the safety performance of the battery are improved.

The invention discloses a preparation method of a nano Mg (OH) 2-PPS fabric composite diaphragm, which comprises the following steps: introducing free radicals into a PPS fabric, carrying out acid treatment, and introducing an oxygen-containing hydrophilic functional group into a diaphragm interface to obtain a hydrophilic PPS fabric diaphragm. Then, Mg (OH) 2 grows on the fiber surface of the hydrophilic PPS fabric diaphragm by using an in-situ growth method, so that the composite membrane is endowed with high air tightness and low membrane resistance, and the alkali resistance and the electrolytic stability of the diaphragm are improved. The prepared composite membrane shows super-hydrophilicity, water drops can be completely absorbed within 1 second, and after 500 hours of tests are carried out in actual electrolysis production, various properties of the composite membrane are kept stable, and the composite membrane shows excellent long-term stability and electrolysis performance.

The invention relates to a diaphragm, an electrochemical device and an electric device, and belongs to the technical field of electrochemical energy storage. The diaphragm provided by the invention comprises a base material and a functional coating arranged on at least one side surface of the base material, the functional coating comprises a functional material, and the functional material is of a core-shell structure and comprises a core layer and a shell layer; the core layer comprises a metal-organic framework material, and the shell layer comprises silicon dioxide and a basic oxide. According to the diaphragm, the functional material is introduced into the functional coating, so that electrolyte decomposition can be effectively inhibited, the interface chemical stability of the diaphragm and the electrolyte is improved, the cycle life of the battery is prolonged, and the high-rate performance of the battery is improved.

The utility model provides a diaphragm pump belongs to mechanical technical field. It solved how to reduce the production cost while improving the problem of diaphragm pump output pressure. This diaphragm pump includes the pump shell of top water inlet channel and water outlet channel. The pump shell bottom fixed elastic diaphragm, forms the internal cavity. The diaphragm top in cavity fixed support. The support upper side and the pump shell top form the water inlet chamber (link water inlet channel) and the water outlet chamber (link water outlet channel) of separation, and the water inlet chamber surrounds the water outlet chamber. The support lower side and the diaphragm form the water storage chamber. The support is opened and has the water inlet hole and the water outlet hole. The water inlet hole links the water inlet chamber and the water storage chamber, and the water outlet hole links the water outlet chamber and the water storage chamber. The water inlet hole and the water outlet hole all axially slide and connect the one-way valve core, and the both installation direction is opposite. Each hole is equipped with spring elasticity and is used to the valve core, makes it under the spring action and blocks the corresponding hole. This diaphragm pump can reduce the production cost while improving the diaphragm pump output pressure.

The invention discloses a ceramic coating diaphragm based on polydopamine gradient modification and a preparation method and application thereof, and belongs to the technical field of partition plates / diaphragms. The ceramic coated separator of the present application comprises: a base film; the surface of the base membrane is coated with the n coatings, the coatings comprise polydopamine modified ceramic particles, the surfaces of the ceramic particles are coated with polydopamine, and n is larger than or equal to 2; wherein the content of the polydopamine is sequentially decreased from the first coating to the nth coating, and the particle size of the ceramic particles is sequentially increased from the first coating to the nth coating, the gradient structure design is adopted, so that the binding force of the polycoatings and the base membrane is effectively improved, and meanwhile, the mechanical strength and the thermal stability of the diaphragm are remarkably improved.

The invention relates to the technical field of air tightness detection, and discloses a diaphragm pump air tightness detection system. The system comprises a pressure generation module, a pressure detection module and a control module, the pressure generation module is configured to apply positive pressure or negative pressure to the inlet end or the outlet end of the tested diaphragm pump; the pressure detection module is configured to detect the pressure information of the inlet end or the pressure information of the outlet end of the detected diaphragm pump; and the control module is configured to control the pressure generation module to apply positive pressure or negative pressure to the inlet end of the detected diaphragm pump or apply positive pressure to the outlet end of the detected diaphragm pump, and generate a corresponding air tightness detection result based on the attenuation amplitude of the pressure information and the pump body type of the detected diaphragm pump. According to the embodiment of the invention, the detection efficiency and the detection precision of diaphragm pump air tightness detection can be improved.

The utility model relates to a kind of device for measuring diaphragm conductivity of hydrogen production device, including box, the top of box is downwardly provided with detection groove, cathode electrolytic cell and anode electrolytic cell are respectively provided in the left and right sides of detection groove of box, the left and right side walls of detection groove are respectively provided with through hole being communicated with cathode electrolytic cell and anode electrolytic cell.This utility model relates to the technical field of hydrogen production system.The device for measuring diaphragm conductivity of hydrogen production device, by the anode clamp, cathode clamp and detection groove being set, the anode clamp and cathode clamp can be supported using detection groove, so that it always keeps the state of clamping diaphragm, so that the installation detection of diaphragm is more convenient, the replacement of diaphragm subsequent is also more simple, and the detection efficiency of diaphragm can be effectively improved.

A novel diaphragm pump with a high-sealing diaphragm assembly includes a pump body and two diaphragm assemblies. Each diaphragm assembly includes a diaphragm, a first clamping plate, and a second clamping plate. The diaphragm is clamped between the first and second clamping plates. The diaphragm includes an outer retaining ring and two inner retaining rings disposed at both ends of the diaphragm. The first and second clamping plates each include a plurality of first and second blocking grooves facing the diaphragm, and a first and second grooves respectively connected to the two inner retaining rings. The first and second blocking grooves adhere to the diaphragm, thereby forming multiple sealing spaces to impede fluid flow. The first and second grooves are also respectively connected to the inner retaining rings to form a sealed space, further impeding fluid flow and thus improving the sealing performance of the diaphragm pump.

The invention relates to the technical field of batteries, in particular to a secondary battery and electric equipment. The secondary battery comprises an electrode assembly with a winding structure, wherein the electrode assembly comprises a positive pole piece, a negative pole piece, a first diaphragm and a second diaphragm; at least part of the negative pole piece is positioned between the first diaphragm and the second diaphragm; the first diaphragm comprises a first base membrane and first coatings arranged on the two sides of the first base membrane, and the first coatings comprise ceramic particles; the second diaphragm comprises a second base membrane and a second coating arranged on one side of the second base membrane, the hole closing temperature T2 of the second base membrane is greater than or equal to 130 DEG C and less than or equal to 150 DEG C, and the second coating comprises a triazine nitrogen-containing heterocyclic compound. According to the invention, the occurrence of battery cell diaphragm holes can be reduced, and the hot box performance of the diaphragm can be improved, so that the high-temperature hot box performance, energy density and service life of the secondary battery can be optimized at the same time.

The invention discloses a new energy battery diaphragm enhancement method based on a degradable polymer, and relates to the technical field of battery diaphragm materials, and the method comprises the following steps: constructing a panoramic light stripe record of synchronous observation of temperature and an electric field, and uniformly aligning a time axis and a space axis to form a continuous heating point track; and generating a temperature electric field coupling image band according to the continuous heating point track. By synchronously sensing and cooperatively regulating and controlling the temperature field, the electric field and the structure evolution process in the diaphragm, the original sudden and discrete degradation behavior is converted into an evolution path capable of being continuously guided, and local instability expansion is inhibited. Meanwhile, through micropore trend rearrangement and geometric traction structure and periodic form adjustment, energy and stress are guided to be dispersed in order, ion transmission balance is maintained, and the safety, reliability and service life stability of the diaphragm in long-term circulation are improved.