31results about How to "Improve energy storage performance" patented technology

The invention relates to a high-entropy ceramic capacitor, a ceramic dielectric material for the high-entropy ceramic capacitor and a preparation method, the raw material composition of the ceramic dielectric material comprises NaNbO3, (Na0. 2Bi0. 2Ba0. 2Mg0. 2Zn0. 2) TiO3, H3BO3, CaZrO3 and the like, by controlling the raw material ratio and preparation process parameters of sodium niobate and adopting a multi-step grinding synthesis method, NaNbO3-based high-entropy ceramic is designed, so that the insulation resistance of the high-entropy ceramic capacitor is effectively improved; on the other hand, chemical modification treatment is carried out by introducing (Na0. 2Bi0. 2Ba0. 2Mg0. 2Zn0. 2) TiO3, H3BO3, CaZrO3 and the like, so that the structural stability of an antiferroelectric phase is enhanced, the compactness of the material is improved, and finally, the energy storage performance of the material is optimized and improved.

This utility model provides a composite perforated wood-plastic composite sound-absorbing wall panel, relating to the technical field of building materials. The composite perforated wood-plastic composite sound-absorbing wall panel comprises, from top to bottom, a veneer layer, a wood-plastic composite layer, and a sound-absorbing layer. The veneer layer has evenly distributed through-holes, and the wood-plastic composite layer has sound-absorbing grooves. The through-holes and sound-absorbing grooves are interconnected, and the sound-absorbing grooves are dovetail grooves. The total thickness of the wall panel is ≤19mm. This utility model achieves a significant improvement in the sound absorption performance of the composite wall panel by designing through-holes in the veneer layer, designing sound-absorbing grooves communicating with the through-holes in the wood-plastic composite layer (designing the sound-absorbing grooves in the dovetail groove form), and then designing a sound-absorbing layer on the bottom surface of the wood-plastic composite layer. The sound absorption principle of this utility model is: using the Helmholtz resonance principle, combined with the oblique wall reflection of the dovetail groove and the excellent sound absorption performance of the wood-plastic composite material itself, to achieve a synergistic effect and significantly improve the sound absorption performance of the composite wall panel.

This invention discloses a method for preparing interface-reinforced niobium pentoxide / porous graphene and its energy storage application. The method involves adding porous graphene oxide during the solvothermal synthesis of a niobium pentoxide precursor to obtain a composite precursor of niobium pentoxide and porous graphene oxide. This precursor is then annealed under a protective atmosphere to obtain the interface-reinforced niobium pentoxide / porous graphene composite material. The composite material obtained by this invention exhibits excellent performance as an electrochemical energy storage material. Furthermore, the preparation method of this invention is simple to operate, requires no complex equipment, and is easily controlled, making it suitable for mass production.

The application discloses a preparation method of defect-induced synthesis of porous carbon nanocomposites and application thereof in supercapacitors. The method uses DHPC as a carbon base to anchor Mn3O4. A large number of intrinsic defects on the surface of the DHPC optimize the local electron density distribution and surface performance, accelerate ion kinetics, provide abundant nucleation sites, and enhance the binding activity with Mn3O4. The microwave-assisted synthesis technology is used to realize the uniform dispersion of Mn3O4 nanoparticles on the DHPC, forming a three-dimensional porous network structure. The structure not only improves the conductivity of Mn3O4, but also promotes the rapid diffusion of electrolyte ions and electron transmission, simultaneously relieves the stress damage in the charging and discharging process, and significantly improves the electrochemical performance and cycle stability of the material. Compared with the prior art, the preparation method has the advantages of simple operation, low cost, environmental friendliness and the like.

The application discloses an iron-based barium sodium niobate ceramic material with high energy storage performance and a preparation method thereof. 4‑2x Sm 2x Na2Fe x Nb 10‑x O 30 , wherein 1<=x<=1.25. Barium carbonate, samarium oxide, sodium carbonate, ferrous oxide and niobium pentoxide are used as raw materials, and a standard solid-phase method is adopted to sinter the iron-based barium sodium niobate ceramic material. In the product formula, iron is used to replace niobium in the barium sodium niobate, which is lead-free, environment-friendly, rich in iron reserves and low in price, and is beneficial to control the cost of raw materials. In addition, the iron replacement is beneficial to enhance the relaxor ferroelectric performance of the material, can obtain a more slender hysteresis loop, and improves the energy storage efficiency of the material. The prepared ceramic material has few pores and cracks, high density, and the microstructure is obviously improved, the grain size is more fine and uniform, the ferroelectric polarization intensity and the breakdown field strength are significantly improved, the problem that the barium sodium niobate material is difficult to sinter is solved, and the ferroelectric performance and the energy storage performance are significantly improved.

The utility model provides a high energy storage inductor which comprises a framework, a coil winding, two groups of magnetic cores, a first insulating layer, a second insulating layer and two insulating plastic covers, the framework comprises an upper baffle, a middle column ring and a lower baffle, and each magnetic core comprises a magnetic column, an upper magnetic plate, a lower magnetic plate and two magnetic arms. The first insulating layer is wound on the outer side surfaces of the upper magnetic plate, the lower magnetic plate and the two magnetic arms of the two groups of magnetic cores, the second insulating layer is wound on the periphery of the coil winding, the periphery of a wire of the coil winding is wrapped with a varnished film, and the two insulating plastic covers oppositely cover a peripheral opening. And one insulating plastic cover is positioned between the second insulating layer and the magnetic arms on the same side of the two groups of magnetic cores. In the assembling production process of the high-energy-storage inductor, not only can the coil winding be prevented from being damaged, but also the insulating property can be enhanced, so that the production quality of products is improved, the potential safety hazard of the products is avoided, the service life of the products is prolonged, and the high-energy-storage inductor is ensured to operate efficiently, stably and safely and is safer and more reliable.

The application relates to a kind of graphite-like capacitor carbon and its preparation method and application, relate to carbon material technical field, solve the problem that the needle coke-based capacitor carbon in the activation pore-forming process of prior art is difficult to consider high specific surface area, layered ordered graphite structure keeps, pore size structure uniform control and continuous electric conduction network, leading to the specific capacitance, rate performance and cycle stability of material are limited.The application is by mixing needle coke powder and chemical activator, first activation is carried out by heating, and the activated product is obtained, and the intermediate product A is obtained by post-processing;Intermediate product A is mixed with catalytic activator, second activation is carried out by heating, and catalytic graphitization product is obtained, and the intermediate product B is obtained by post-processing;The intermediate product B is calcined to obtain graphite-like capacitor carbon by refining treatment.The graphite-like capacitor carbon provided by the application can be applied to the preparation of supercapacitors, and the synergistic balance between high specific surface area, high packing density, excellent conductivity and structural stability is realized.

This invention relates to a method for preparing a vanadium selenide / vanadium oxide heterojunction photo-assisted zinc-ion battery, belonging to the technical field of vanadium selenide / vanadium oxide heterojunction photo-assisted electrochemical energy storage and zinc-ion battery. The method includes the following steps: mixing a selenium source solution and a vanadium source solution to obtain a reaction precursor solution; subjecting the reaction precursor solution to a hydrothermal reaction and washing to obtain vanadium selenide material; annealing the vanadium selenide material to form a vanadium oxide layer on its surface, obtaining a vanadium selenide / vanadium oxide heterojunction composite material; mixing the vanadium selenide / vanadium oxide heterojunction composite material, a conductive agent, and a binder, adding a solvent to prepare a slurry, coating the slurry onto the surface of a current collector, and drying to obtain a photocathode. The material and its application system described in this invention exhibit good specific capacity, rate performance, and cycle stability, and demonstrate good energy storage performance under illumination conditions; this invention is beneficial for further reducing electrode polarization and promoting the synergistic enhancement of electron transport and zinc-ion storage.

This utility model discloses a real-time clock circuit and a Beidou receiver, relating to the field of electronic circuit technology. The disclosed real-time clock circuit includes an energy storage module and a timing module. The energy storage module includes at least one electrolytic capacitor, which has a porous anode substrate structure and a dielectric constant higher than a preset dielectric constant. The timing module is connected to both the electrolytic capacitor and a power supply. This utility model utilizes the electrolytic capacitor to store energy when connected to a power supply, receiving the output voltage from the power supply and outputting the stored energy voltage to the timing module when the power supply is disconnected. The porous anode substrate structure of the electrolytic capacitor, with a dielectric constant higher than a preset dielectric constant, enables the storage of more energy in a short time, ensuring longer time recording even after the Beidou receiver is powered off, thus providing a reliable time reference for the long-term operation of the Beidou receiver.

This invention belongs to the field of polymers and relates to a polypropylene roughening film for thin-film capacitors, its preparation method, and a metallized polypropylene film. The polypropylene roughening film comprises modified polypropylene grafted with alkenyl functional monomers, an antioxidant, and a processing aid. The modified polypropylene grafted with alkenyl functional monomers includes structural units derived from polypropylene as the matrix phase and structural units derived from alkenyl functional monomers as the dispersed phase. The ash content of the modified polypropylene grafted with alkenyl functional monomers is less than 50 ppm. The mass ratio of structural units derived from alkenyl functional monomers in the grafted state to structural units derived from alkenyl functional monomers in the self-polymerized state is greater than or equal to 1.0. The D50 of the dispersed phase is less than 450 nm. The film of this invention can maintain good dielectric and energy storage properties at high operating temperatures and is suitable for high-temperature and high-field-strength operating conditions.

The invention discloses a sodium niobate-based ferroelectric ceramic and a preparation method thereof, and belongs to the field of dielectric ceramics. The chemical composition general formula of the sodium niobate-based ferroelectric ceramic is (Na < 0.874-0.874 x > Yb < 0.0085-0.0085 x > Tm < 0.0085-0.0085 x > Bi < 0.075-0.75 x > Ba < 0.5 a > Sr < 0.5 b >) (Nb < 0.85-0.85 x > Ti < 0.15-0.15 x > Sn < 0.5 c > Hf < 0.5 d >) O3, a = b = c = d, and x is greater than or equal to 2 and less than or equal to 6; the ceramic is of an ABO3 type perovskite structure, and in the ABO3 type perovskite structure, Bi ions are in a compound occupation form in which the A site and the B site coexist. The preparation method comprises the following steps: (1) proportioning and refining to obtain mixed powder; (2) performing pre-synthesis and powder treatment to obtain uniform powder; (3) preparing a molded green body; (4) removing organic matters; and (5) densifying and sintering to obtain the ferroelectric ceramic. The sodium niobate-based ferroelectric ceramic provided by the invention can achieve the effects of high Wrec, high eta, wide temperature range and excellent stability at the same time.

The application discloses a salt solution modified molecular sieve, a preparation method and application thereof, and belongs to the technical field of molecular sieves. The preparation method of the salt solution modified molecular sieve comprises the following steps: cation replacement, i.e., placing Na type molecular sieves in a first metal inorganic salt solution for replacement; sintering, i.e., calcining the replaced molecular sieves at a temperature of 400 DEG C or above; impregnation, i.e., mixing the sintered molecular sieves with a second metal inorganic salt solution for impregnation; separation and drying, i.e., separating and drying the impregnated molecular sieves to obtain the salt solution modified molecular sieves. The metal cations in the first metal inorganic salt solution and the second metal inorganic salt solution are at least one of Li + , Ca 2+ , Mg 2+ , Zn 2+ , Co 2+ , Al 3+ , Fe 2+ . The application has the effects of no liquid leakage during hydration / desorption reaction, significantly improved adsorption heat storage density and the like.

This invention relates to the field of new materials technology, and more particularly to a polyaniline conductive ink and its preparation method, as well as the application of this ink in flexible electronic devices, especially micro supercapacitors. A polyaniline conductive ink comprises, by weight, 10-30 parts of conductive filler; 18-30 parts of binder; 32-69 parts of solvent; and 3-8 parts of additives; wherein the conductive filler is composed of graphite, carbon black, and polyaniline. The polyaniline conductive ink of this invention solves the problem that existing conductive inks struggle to simultaneously achieve high conductivity, excellent mechanical flexibility, and high energy storage capacity.

The invention discloses a multi-element isovalent ion co-doped AgNbO3 lead-free anti-ferroelectric energy storage ceramic material as well as a preparation method and application thereof, and the chemical formula of the energy storage ceramic material is Ag (0.7-3x) Bi (0.1) Tm (x) Nb (0.9) Ta (0.1) O3, 0lt, tm < 3 + > is introduced to the A site again on the basis of the Ag0. 7Bi0. 1Nb0. 9Ta0. 1O3 anti-ferroelectric energy storage ceramic material, so that the AgNbO3 lead-free anti-ferroelectric energy storage ceramic material co-doped with Bi < 3 + > and Tm < 3 + > at the A site and Ta < 5 + > at the B site is formed. According to the invention, under the synergistic effect of improving the stability of an antiferroelectric phase and improving the dielectric breakdown strength and relaxation, the prepared Ag0. 655Bi0. 1Tm0. 015Nb0. 9Ta0. 1O3 energy storage ceramic material obtains the energy storage density as high as 11.04 J / cm < 3 > and the conversion efficiency as high as 79.62% under the action of 428kV / cm, which are about four times of that of an AgNbO3 ceramic material.

The invention relates to a flexible paper-based supercapacitor, and the supercapacitor sequentially comprises the following structures from bottom to top: a positive electrode, an electrolyte layer, and a negative electrode. Wherein the positive electrode sequentially comprises a carbon nanotube paper layer and a poly (benzodifuran diketone)-activated carbon composite layer from bottom to top; the negative electrode sequentially comprises a poly (benzodifuran diketone)-activated carbon composite layer and a carbon nanotube paper layer from bottom to top; the electrolyte layer comprises a water-based diaphragm; and the electrolyte layer is completely divided into an upper part and a lower part by the water-based diaphragm. The carbon nanotubes are introduced into the cellulose paper, so that the cellulose paper has relatively high conductivity and excellent mechanical flexibility, and can be used as a substrate of a self-supporting electrode to load an active substance; the PBFDO and the active carbon (AC) are compounded to form a double-electrode layer-pseudocapacitance synergistic energy storage system, so that the electrochemical performance of the device is remarkably improved. The strategy breaks through the bottleneck of electrochemical performance and mechanical flexibility of the flexible supercapacitor, and has a wide prospect.

This invention discloses a flexible high-energy-storage capacitor film, its preparation method, and its application, belonging to the field of dielectric thin-film capacitor preparation technology. The purpose of this invention is to solve the problem of low energy storage performance in existing capacitor films. The flexible high-energy-storage capacitor film is composed of an antiferroelectric layer material and a relaxation layer material; the antiferroelectric layer material is lead zirconate (PbZrO3, PZO), and the relaxation layer material is lead lanthanum zirconate titanate (Pb). 0.9 La 0.1 Zr 0.52 Ti 0.48 O3, PLZT); This invention studies the heat treatment temperature of antiferroelectric layer and relaxor layer materials, and further designs heterogeneous composite films with different stacking structures; This invention uses the sol-gel method to prepare heterogeneous composite films, introduces relaxor layer materials into antiferroelectric layer materials, reduces the leakage current density of capacitor films, and improves the energy storage performance of capacitor films.

The utility model discloses a miniaturized surface-mounted capacitor, and particularly relates to the technical field of surface-mounted capacitors, which comprises a shell, a capacitor core bag is arranged in the shell, the capacitor core bag comprises an adhesive tape, a cathode formed foil is mounted on the outer surface of the adhesive tape, an anode formed foil is mounted on the outer surface of the cathode formed foil, and the anode formed foil is mounted on the outer surface of the anode formed foil. The side wall of the capacitor shell is provided with the heat dissipation channel, heat of the capacitor core bag is effectively dissipated, and stable operation is guaranteed. In the capacitor core bag, the cathode and anode formed foils are subjected to electrolyte impregnation and formation treatment to form a high-performance dielectric layer. The isolation paper isolates cathode and anode to prevent short circuit, ensures balanced distribution of electrolyte and improves capacitance performance, the shell cover plate and the shell are sealed to prevent electrolyte leakage, through holes of the shell cover plate are matched with guide pins, stable connection is guaranteed, current is led out, the base design is beneficial to installation and fixation, and the partition plate flexibly adjusts internal layout to increase flexibility. The prefabricated cover plate strengthens the base structure and protects the top of the capacitor.

The invention discloses a three-dimensional multi-layer LDH / CS / PPy composite material and a preparation method and application thereof.The composite material is of a multi-layer core-shell structure, a carbon sphere CS with the surface rich in functional groups serves as a structure guiding core, nickel-cobalt-aluminum layered double hydroxide NiCoAl-LDH is induced to grow in situ on the surface of the carbon sphere CS to form a uniformly-dispersed flower-shaped structure, and the composite material has the advantages that the structure of the structure guiding core is optimized; coating the surface of the composite material with a polypyrrole (PPy) conductive layer through an in-situ polymerization method to construct a three-dimensional conductive network; when the material is applied to assembly of asymmetric supercapacitors (LDH / CS / PPy / / AC), ultrahigh power density and energy density are achieved, a plurality of LEDs connected in parallel can be lightened, and the material can be used for constructing novel supercapacitors with high energy density, high power density and excellent cycling stability.

The application belongs to the technical field of biomass green high-value utilization, and more particularly relates to a traditional Chinese medicine stem biomass charcoal as well as a preparation method and application thereof. The traditional Chinese medicine stem-based porous carbon material with a columnar network porous structure is prepared through low eutectic solvent impregnation reflux pretreatment, high-temperature carbonization, acid washing, filtration and drying. The preparation method provided by the application can not only control the specific surface area of the traditional Chinese medicine stem-based porous carbon, but also retain N and S heteroatoms in the traditional Chinese medicine stem, and can also regulate the pore structure of the traditional Chinese medicine stem-based porous carbon. The obtained traditional Chinese medicine stem-based porous carbon is suitable for being used as an adsorption material for adsorbing and separating pollutants in water bodies, soil and other environments, and can also store a large amount of charges to improve the energy storage property of the material and be used for preparing electrochemical devices. The overall preparation method is low-carbon and environmentally friendly, the obtained biomass charcoal has a high specific surface area, and has good commercial application value.

The invention relates to the technical field of energy storage ceramics, in particular to a high-energy-storage and high-efficiency dielectric ceramic and a preparation method thereof. According to the specific technical scheme, the chemical general formula of the high-energy-storage and high-efficiency dielectric ceramic is (1-x) Bi < 0.2 > Na < 0.2 > K < 0.2 > La < 0.2 > Sr < 0.2 > TiO < 3-x > PbTiO < 3 >, and x is the content of introduced PbTiO < 3 > and ranges from 0.1 to 0.4. The polarization intensity of the high-entropy energy storage ceramic is regulated and controlled by regulating and controlling the content of the strong ferroelectric component.

The application belongs to the field of polymers and relates to a low-VOC modified polypropylene composition, a biaxially stretched polypropylene film and a green and environment-friendly polypropylene capacitor film. The modified polypropylene composition comprises modified polypropylene grafted with an alkenyl functional monomer, a VOC inhibitor, an antioxidant and a processing aid. The modified polypropylene grafted with the alkenyl functional monomer comprises structural units derived from polypropylene as a matrix phase and structural units derived from the alkenyl functional monomer as a dispersed phase. The biaxially stretched polypropylene film of the application can maintain good dielectric properties and energy storage properties at a high working temperature and is suitable for high-temperature and high-operation-field-strength working conditions.

The application provides a cement-based battery and a preparation method thereof, the cement-based battery comprising a conductive cement base and a plurality of battery bodies connected in series in the conductive cement base; the conductive cement base is cast by a cement-based electrolyte material, the cement-based electrolyte material comprises the following components in percentage by weight: cement 14.9-65.0%, conductive material 0.1-2.8%, fine aggregate 0-71.7%, water reducing agent 0-0.53%, and water 21.1-40%, and the fluidity of the cement-based electrolyte material is greater than or equal to 160 mm. The cement-based battery of the application comprises a plurality of battery bodies connected in series, the total energy storage capacity is improved, and stable current can be provided for a long time without the help of an external power supply, and the corresponding structural function can be undertaken without occupying additional space of a building. The preparation method of the application is simple, raw materials are easy to obtain, and economic benefits are high.

The application discloses a kind of double crystal phase microcrystalline glass materials and preparation method and application, belong to luminescent material technical field.The double crystal phase microcrystalline glass material includes Ca2Al2SiO7:Eu 2+ And CaAl2Si2O8:Eu 2+ Double crystal phase;The glass matrix of the double crystal phase microcrystalline glass material includes the following components: SiO2, Al2O3, CaO, Eu2O3.The double crystal phase in the double crystal phase microcrystalline glass material of the application is activated ion Eu 2+ Multiple doping sites are provided, so that the photoluminescence color and long afterglow light color can be realized from blue light to wide yellow light adjustable tuning;The thermal release peak of the double crystal phase microcrystalline glass material is wide and extends to high temperature 650K, and the defect energy level of the surface is very deep and the defect energy level energy storage performance is good.The double crystal phase microcrystalline glass material of the application provides technical support for high temperature scene warning sign and night vision lighting field.

The application discloses A and B site doped BaTiO3-based dielectric ceramic, characterized in that the chemical formula of the A and B site doped BaTiO3-based dielectric ceramic is (Ba x1 Ca x2 Sr 1‑x1‑x2 )(Ti 0.4 La 0.2 Ce 0.2 Ta 0.2 )O3, 0≤x1≤1, 0≤x2≤1, and x1+x2≤1. The application also discloses a preparation method thereof. The application introduces other elements into A and B of the barium titanate ceramic dielectric material, improves the high-temperature stability and energy storage performance, and overcomes the defects of poor temperature stability and low energy storage efficiency of the existing barium titanate ceramic dielectric material.

The utility model relates to a high structure integration carbon fiber foot plate which comprises a connector, a main foot plate, a bottom plate and a double lower foot plate structure, and the main foot plate comprises a leg plate and an upper foot plate which are integrally connected from top to bottom; wherein the upper end of the leg plate is connected with the connector through a fastener, and the tail end of the leg plate is fixedly connected with the double-lower foot plate structure through a connecting piece; the bottom plate is located below the upper foot plate and the double-lower-foot-plate structure, one end of the bottom plate is fixedly connected with the upper foot plate, and the other end of the bottom plate is fixedly connected with the double-lower-foot-plate structure. The main foot plate has the advantages that the main foot plate adopts the integrated design of the foot plate and the leg plate, so that the operation complexity during installation can be avoided, the operation difficulty is reduced, the light weight of the whole artificial limb is better realized, the burden of the residual limb is reduced, and better wearing comfort is provided for a user; due to the arrangement of the double-lower foot plate structure on the main foot plate, the double energy storage and impact protection effects can be achieved.

A calcium titanate-based dielectric material with high energy storage performance was designed. The chemical formula of this material is Ca. 1‑x Dy x (Ti 1‑y Hf y ) 1‑x / 4 O3-z mol%M, where x=0.005~0.05, y=0.1~0.2, z=0~2, and M is MnO2 or BaCu(B2O5). It is prepared using solid-state reaction and tape casting methods. This invention, based on calcium titanate-based ceramics with high breakdown field strength, employs a series of strategies to improve energy storage performance, including element substitution, doping with sintering aids, and process improvement: partial substitution of Hf elements at the B site increases the band gap; doping with sintering aids improves grain density, both of which enhance the breakdown field strength; the addition of rare earth element Dy enhances the polarization response by introducing defect dipoles; the non-stoichiometric design reduces oxygen vacancy compensation, thereby increasing resistivity; and the tape casting method improves ceramic density and grain uniformity. The final prepared calcium titanate-based energy storage medium ceramic material exhibits good energy storage performance, with Ca... 0.995 Dy 0.005 (Ti 0.9 Hf 0.1 ) 0.99875 The best energy storage performance was achieved in O3-0.5 mol% BaCu(B2O5) ceramics, with a breakdown field strength of 101.90 kV / mm and an effective energy storage density of 10.22 J / cm³. 3 .

The invention discloses a superparaelectric energy storage thin film material and a preparation method thereof.The superparaelectric energy storage thin film material comprises a substrate layer, a bottom electrode layer and a superlattice-solid solution dielectric layer which are stacked in sequence, the superlattice-solid solution dielectric layer comprises a superlattice layer, the superlattice layer is formed by sequentially and alternately stacking BaTiO3 layers and SrTiO3 layers, and the BaTiO3 layers and the SrTiO3 layers are stacked in sequence. A solid solution is distributed in the superlattice layer, and the solid solution is BiFeO3. The superparaelectric energy storage film material integrates the advantages of a multi-scale structure, has a slender ferroelectric hysteresis loop, and has excellent energy storage density and energy storage efficiency.

The application discloses a kind of wisdom park hybrid power energy storage devices, comprising: cabinet;Shell, the shell is located in the cabinet and inside and is placed with energy storage module;Control module, the control module is set above the energy storage module, and the control module is equipped with the joint of electrical connection with the energy storage module;Transmission interface, set on the cabinet, for the input and output of electric energy;Connecting line, is arranged in the cabinet, and one end of the connecting line is connected on the transmission interface, and the other end is electrically connected with the control module.The device is simple in structure, and the integration is high.

The invention discloses a preparation method of a PAN-based solid-solid phase change material, which comprises the following steps: step 1, uniformly mixing acrylonitrile and phase change monomers, and heating until all the monomers are completely molten to form a uniform liquid system; adding an emulsifier, a chain transfer agent and deionized water into the liquid system, and completely emulsifying all monomers to obtain a stable emulsion system; step 2, placing the emulsion system in an oxygen-free environment, and adding an initiator solution for free radical polymerization reaction to obtain a polymerized emulsion system; step 3, adding the polymerized emulsion system into the salting-out agent solution, and standing to form a polymer precipitate; and washing the polymer precipitate to remove unreacted monomers and impurities, and drying to remove moisture, thereby obtaining the PAN-based solid-solid phase change material. According to the invention, PAN is taken as a main chain, a side chain with a phase change function is introduced through free radical copolymerization, and a brand-new polymer type phase change energy storage material is constructed.

This invention relates to the field of building energy-saving materials technology, specifically to an aerogel thermal insulation and energy storage material and its preparation method. The material comprises: 5-30 wt% silica aerogel, 30-65 wt% modified expanded perlite, 10-30 wt% phenolic resin, and 20-50 wt% phase change material; and has a three-layer gradient composite structure from the outside to the inside: a surface aerogel thermal insulation layer, an intermediate interface transition layer, and a core energy storage and thermal insulation layer; the modified expanded perlite is surface-modified with γ-aminopropyltriethoxysilane, with an amino grafting amount of 0.5-1.5 mmol / g. This invention solves the interfacial compatibility and phase change leakage problems through APTES chemical bridging modification, and achieves synergistic optimization of thermal insulation and energy storage by combining the three-layer gradient structure. The material has low thermal conductivity, high energy storage density, good cycle stability, and low cost, making it suitable for large-scale applications.