19results about How to "Improve high pressure performance" patented technology

This invention proposes a lithium-ion battery electrolyte and its application. The electrolyte comprises at least the following components: a fluorinated solvent, including 2,2-difluoroethyl acetate, fluoroethylene carbonate, and 2,2-difluoroethyl ethyl carbonate; a lithium salt, including a first lithium salt comprising lithium hexafluorophosphate; and an additive, including a first additive comprising lithium difluorobis(oxalato)phosphate. The lithium-ion battery electrolyte and its application proposed in this invention can improve the electrolyte's high-voltage resistance and kinetic performance, reduce battery impedance, and enhance the battery's fast-charging performance and high-temperature cycle stability.

This invention discloses a method for preparing a composite solid electrolyte, comprising the following steps: S1: dispersing modified sulfide electrolyte particles in an organic solvent, adding ethylene glycol diglycidyl ether and trifluoropyridine diamine for polymerization; S2: reacting the reaction product with added bromoalkane, then adding a fluorinated anion solution for ion exchange reaction to obtain a polyionic liquid-coated electrolyte intermediate; S3: placing it in a reactor containing acrylate, swelling under supercritical conditions, and then adding polyethylene glycol acrylate and lithium salt; after the reaction, a composite solid electrolyte with an interpenetrating or semi-interpenetrating network structure polymer coating is obtained. The preparation method of this invention not only effectively suppresses side reactions between the sulfide electrolyte, organic solvent, and lithium metal anode, but also significantly improves the interfacial stability and ionic conductivity of the electrolyte through the interpenetrating or semi-interpenetrating network structure polymer coating layer.

The filter element comprises an end cover, a first sleeve and a second sleeve, a through hole penetrating up and down is formed in the center of the top of the end cover, the first sleeve and the second sleeve are both fixedly installed at the bottom of the end cover, and the first sleeve is located in the second sleeve; a gap is formed between the bottom end face of the first sleeve and the top end face of the second sleeve, a sealing gasket is arranged in the gap, the wall of the first sleeve and the wall of the second sleeve are each of a hollow structure, the wall of the first sleeve and the wall of the second sleeve are filled with multiple layers of filter cotton, and multiple layers of steel wire meshes are arranged in the wall of the first sleeve and the wall of the second sleeve. During use, the first sleeve is mounted at the bottom of the end cover, then the second sleeve is mounted at the bottom of the end cover, and high-pressure liquid enters the first sleeve through the end cover, impacts the first sleeve and then overflows the second sleeve, so that the pressure is borne in a graded manner, and the high-pressure resistance is improved.

This utility model discloses a moving spring assembly and a relay, including a moving spring body. The moving spring body includes a main body segment and a bent portion connected to the free end of the main body segment. A moving contact corresponding to the stationary contact on the stationary spring assembly of the relay is installed on the bent portion. The bent portion is configured to bend away from the stationary spring assembly to increase the breaking gap between the moving contact and the stationary contact. Because the bent portion is provided at the free end of the main body segment and the moving contact is installed on the bent portion, compared to the existing straight, elongated moving spring structure, the space occupied in the corresponding contact breaking direction within the operating stroke is relatively small. This facilitates the compact installation of relay components within a limited space, and further improves the design effect of small size, large contact, and large gap of the relay, thereby improving the high voltage resistance performance of the relay.

The present invention relates to an electrolyte additive, its preparation method and application, belonging to the field of battery technology, and is used to solve at least one of the problems such as low conductivity of the existing electrolyte, poor cycle performance and high-voltage resistance performance of the battery. The electrolyte additive of the present invention grafts an ionic liquid group onto a cyclic ester compound, improving the ion transport channel and further enhancing the ionic conductivity of the SEI after film formation; in addition, during the formation of the SEI film, the oxacyclic group undergoes a ring-opening polymerization reaction to form a more stable SEI film, improving the cycle performance and high-voltage resistance performance of the battery, etc.

The utility model relates to the photovoltaic field, and discloses a photovoltaic module which comprises an insulating layer, a first substrate, a first packaging adhesive film layer, a battery piece layer, a second packaging adhesive film layer and a second substrate, the first substrate, the first packaging adhesive film layer, the battery piece layer, the second packaging adhesive film layer and the second substrate are sequentially stacked from bottom to top, and the insulating layer is located between the first packaging adhesive film layer and the second packaging adhesive film layer. The insulating layer is distributed on the edge area of the upper surface, the side surface and the edge area of the lower surface of the battery piece layer, and the width of the covering area of the insulating layer on the upper surface of the battery piece layer is different from that of the covering area of the insulating layer on the lower surface of the battery piece layer; or, the insulating layer is in a bag shape, and the battery piece layer is completely wrapped in the insulating layer. The creepage distance of the photovoltaic module is increased, and the increased creepage distance is the width of the insulating layer located on the upper surface or the lower surface of the battery piece layer. Therefore, the area of the photovoltaic module can be fully utilized, and the utilization efficiency of the photovoltaic module is improved. The widths of the insulating layers on the upper and lower surfaces of the cell layer are different, thereby reducing the manufacturing difficulty.

The utility model discloses a kind of high-purity high-pressure-resistant soft sealing ball valves, including valve body assembly, ball core and soft sealing structure, valve body assembly is equipped with valve core cavity and is equipped with the medium channel in the both sides of valve core cavity, medium channel is communicated with valve core cavity, ball core is rotatably arranged in valve core cavity, soft sealing structure is arranged between medium channel and valve core cavity and includes valve seat, compression ring and elastic member, valve seat is annular and has hard shell and soft sealing body, hard shell is equipped with annular groove, the side of annular groove towards ball core is open structure, soft sealing body is arranged in annular groove and part from the open structure of annular groove Stretches out, elastic member is acted on valve seat by compression ring, so that the part of soft sealing body from the open structure of annular groove abuts on ball core.The utility model by hard shell part cladding soft sealing body, can improve the high-pressure resistance of valve seat, reduce its possibility of deformation due to high-pressure medium, ensure sealing performance, improve adaptability.

The utility model discloses a cathode shield, a high-voltage socket and an X-ray generator, the cathode shield is used for reducing the electric field intensity of a welding seam formed by a connecting ring in the high-voltage socket and a socket body, the cathode shield is sleeved at one end of the socket body and outside the connecting ring, and a vacuum gap is defined between the cathode shield and the welding seam; a protruding part which protrudes towards the welding seam and surrounds the welding seam is defined by the inner wall face, close to one end, of the cathode cover, and the protruding part is used for reducing the radial distance between the inner wall face, at the protruding part, of the cathode cover and the welding seam so as to reduce the electric field intensity at the welding seam. According to the cathode cover provided by the embodiment of the utility model, the inner wall surface of the cathode cover is provided with the lug boss corresponding to the welding seam, so that the intensity of an electric field near the welding seam is reduced, and the insulation level and the high-voltage resistance of a high-voltage socket are improved.

This invention provides a diode structure, comprising: a substrate; multiple filling trenches disposed on the substrate, extending along the length or width direction of the substrate and spaced apart along the length or width direction of the substrate; an epitaxial filling layer disposed within each filling trench; a first metal layer connected to at least one epitaxial filling layer within the multiple filling trenches to form a first ohmic contact; and a second metal layer disposed on the substrate and forming a Schottky contact with the substrate. This application solves the problem of low high-voltage withstand capability in existing SiC diodes.

The utility model relates to PET polyester bottle technical field discloses a kind of light PET polyester bottles with high-pressure-resistant structure, comprising: light PET polyester bottle body;High-pressure-resistant structure, the high-pressure-resistant structure is arranged on light PET polyester bottle body, the high-pressure-resistant structure is used to improve the compression resistance of light PET polyester bottle body;Convenient operation structure, the convenient operation structure is arranged at the top of light PET polyester bottle body, the convenient operation structure is used to improve the convenience of opening opening and closing.The utility model is designed by arc convex part and hemispherical convex part, so that the bottom of bottle forms hemispherical groove and arc groove, which can uniformly disperse the impact force of medium in the inner cavity bottom of light PET polyester bottle body, disperse internal pressure stress, enhance the load-bearing and compression resistance of bottle bottom, by the design of lower reinforcing ring, connecting rod one, middle reinforcing ring, connecting rod two and upper reinforcing ring, frame structure can be formed on the outer wall of light PET polyester bottle body, to prevent lateral expansion.

According to the technical scheme, the seamless tube comprises an outer tube, a seamless tube body and a lining column, a carbon fiber tube is installed on the outer surface of the seamless tube body through a supporting tube, the outer tube body is installed on the outer surface of the carbon fiber tube through a clamping table, and a ceramic heat-resisting layer is arranged on the outer surface of the outer tube body. A supporting column is installed on the outer surface of the lining column, a supporting rod is installed on the outer surface of the supporting column, a supporting plate is installed at the tail end of the supporting rod, a supporting groove is formed in the position, located on the supporting plate, of the inner surface of the seamless pipe, and the supporting plate is clamped in the supporting groove. The high-temperature-resistant and high-pressure-resistant seamless tube solves the problems that the supporting performance of seamless steel is reduced and the service life of the seamless tube is affected due to the fact that an existing seamless tube is greatly affected by pressure and temperature in a high-temperature and high-pressure environment, the supporting performance of the seamless steel is guaranteed, and therefore the service life of the seamless tube is prolonged.

The utility model provides a kind of high-pressure-resistant air cannon pipe, including pipe body, the pipe body includes inner layer, high-pressure-resistant layer and protective layer, the inside of metal frame is equipped with reinforcing rib, the both ends of metal frame are fixedly connected with fixed ring, one end of pipe body is fixedly connected with first connector, the other end of pipe body is fixedly connected with second connector. When using device, the frame of whole is formed using metal frame, and multiple reinforcing ribs are installed in the inside of metal frame, to strengthen the high-pressure-resistant performance of whole, and the fixed ring of both ends is used to fix, to further improve the overall compression strength of device, by setting first connector and second connector, first connector or second connector is used to facilitate and air cannon and gas source interface matching, and by the sealing ring in the inside of thread groove and annular groove, to improve the air tightness of connection, can be widely applied in air cannon pipe technical field.

The utility model relates to the technical field of ocean engineering discloses a high pressure -resisting undersea air bag, including air bag body one, air bag body one outer wall is provided with air bag body two, air bag body one and air bag body two inner wall all are provided with high pressure -resisting subassembly, air bag body one outer wall one side is provided with splicing subassembly, the high pressure -resisting subassembly includes five circular support rings, five circular support rings are in straight line array shape and set up in air bag body one and air bag body two inner wall, the interlayer of air bag body one and air bag body two is provided with the force -bearing layer, the outer wall of force -bearing layer is pasted with buffer layer, the outer wall of buffer layer is pasted with gas -tight layer. In the utility model, the support ring forms the integral frame and disperses water pressure through the reinforcing rib, the cross -shaped support rod cooperates the reinforcing block and enhances the deformation resistance, and the high pressure -resisting performance is promoted in cooperation, reaches the effect that the overall high pressure -resisting performance is improved significantly, and the complex high pressure undersea environment is adapted.

The embodiment of the invention provides a positive plate, a preparation method thereof and a secondary battery. The positive plate comprises a current collector, a first positive active layer and a second positive active layer which are sequentially stacked, wherein the first positive electrode active layer comprises a first positive electrode active material, a liquid ion plastic crystal electrolyte, a first conductive agent and a first binder, and the second positive electrode active layer comprises a second positive electrode active material, a solid ion plastic crystal electrolyte, a second conductive agent and a second binder. The liquid ion plastic crystal electrolyte with high ionic conductivity is used in the first positive electrode active layer, and the solid ion plastic crystal electrolyte with high electrochemical stability is used in the second positive electrode active layer, so that partition collaborative optimization of an ion transmission channel and interface stability is realized; and the problem of contact inactivation of the positive active material due to volume change in the charging and discharging process is further avoided, so that the rate capability and long cycle performance of the all-solid-state battery under low test pressure are ensured.

The application discloses a kind of organic-inorganic coating lithium battery separators and preparation method thereof, to plant phenolic compound processing ceramic particles, later with isocyanate crosslinking reaction to obtain functionalized ceramic material, then with polyphosphine and its derivative self-crosslinking to form polyphosphine / functionalized ceramic composite coating, after the surface glyceride compound treatment, the separator coating prepared.The application introduces organic-inorganic coating on polyolefin separator single side or both sides, further improves the adhesion strength, mechanical properties and ionic conductivity of separator coating under the premise of not affecting other properties, and reduces the moisture content of separator;Further improve its electrochemical performance, so that it can better meet the performance requirements of lithium ion battery separator.

The application provides a diode structure, comprising: a substrate layer body, the substrate layer body comprising oppositely arranged top and bottom surfaces; a filling groove arranged on the substrate layer body, the filling groove extending along the length direction or the width direction of the substrate layer body, and the opening of the filling groove gradually increases from the bottom surface to the top surface; a filling layer body arranged in the filling groove, the filling layer body being provided with a first ohmic contact region in the filling groove; and a first metal layer body arranged on the top surface of the substrate layer body and forming a Schottky contact with the substrate layer body, at least part of the first metal layer body being embedded in the filling groove. The application solves the problem of low high-voltage resistance of the SIC diode device in the prior art.

This invention proposes a lithium-ion battery electrolyte and its application. The electrolyte comprises at least the following components: a fluorinated solvent, including 2,2-difluoroethyl ethyl carbonate and fluoroethylene carbonate; a lithium salt, including a first lithium salt, wherein the first lithium salt comprises lithium hexafluorophosphate; and an additive, including a first additive, wherein the first additive comprises tripropynyl phosphate. The lithium-ion battery electrolyte and its application proposed in this invention can improve the high-voltage resistance of the electrolyte and enhance the cycle stability and rate performance of the battery.

The invention belongs to the technical field of solid-state electrolytes, and particularly relates to a lithium lanthanum zirconium oxide and polyacrylonitrile composite solid-state electrolyte, a preparation method and application thereof and an all-solid-state battery. The preparation method comprises the following steps: 1) preparing cubic phase LLZTO powder; (2) carrying out surface silanization treatment on the cubic phase LLZTO powder under an acidic condition; 3) preparing polyacrylonitrile, a polyion liquid, a lithium salt and the cubic phase LLZTO of which the surface is silanized into composite electrolyte slurry at room temperature; and 4) casting the composite electrolyte slurry to form a film, and then performing vacuum drying to obtain the lithium lanthanum zirconium oxide and polyacrylonitrile composite solid electrolyte. The LLZTO and polyacrylonitrile composite solid electrolyte provided by the invention can integrate the advantages of organic and inorganic materials, solves the problem of contact between traditional polyacrylonitrile and LLZTO and a positive electrode side interface, and realizes a stable composite structure with high voltage resistance, high temperature resistance and high ionic conductivity.

The application provides an electrolyte, a preparation method and application thereof, the electrolyte comprises an organic solvent, a lithium salt, an interface additive and a fluorine-containing diluent; the interface additive comprises a boric acid bis-sulfolactone compound; the boric acid bis-sulfolactone compound has a structure shown in formula I; in the application, the electrolyte is compounded by selecting a specific structure of the interface additive and the fluorine-containing diluent, so that the electrolyte has high conductivity, forms a unique high-voltage-resistant fast-charging electrolyte system, improves the high-voltage resistance and cycle performance of the battery, has higher charging capacity under the same condition, and has good fast-charging performance.