40results about How to "Cyclic stability" patented technology

The invention belongs to the field of organic electrolytes and potassium ion batteries, and particularly relates to a low-concentration ionic liquid electrolyte for breaking the concentration balance of potassium ions and anions and a high-energy-density potassium ion battery. The potassium ion battery comprises a Prussian blue (PB) positive electrode, an electrolyte and a commercial ferrocene (Fc) negative electrode which is not subjected to any treatment, and the electrolyte is a low-concentration ionic liquid electrolyte (FSI-: K + (3.5 / 0.3 M)) of potassium bis (fluorosulfonyl) imide (KFSI). The low-concentration ionic liquid electrolyte developed by the invention has a high anion: K < + > concentration ratio (3.5: 0.3 M), increases the solvation proportion of rich anions, reduces the dissolution of an Fc organic metal compound, and ensures high interface stability and rapid K < + > storage kinetics of an Fc negative electrode. Meanwhile, the electrochemical window of the low-concentration electrolyte is widened, the PB positive electrode can stably circulate at 1.0-4.4 V, the long-period circulation and excellent rate capability of the PBFc total battery are also realized, and the total battery has the energy density of 246.7 Wh / kg under the current density of 20 mA / g.

The invention discloses a process for preparing a V2O3 / ZnV2O3 total battery by simultaneously using vanadium oxide in a zinc ion battery as a positive electrode material and a negative electrode material, which comprises the following steps: reacting ammonium metavanadate with absolute ethyl alcohol by adopting a solvothermal synthesis method, washing, drying, and calcining in a tubular furnace to obtain V2O3; in the preparation process of the V2O3 positive electrode material, only V2O3, acetylene black serving as a conductive agent and PVDF serving as a binder are mixed in proportion and then are coated on graphite paper, other coating protection materials do not need to be introduced into a V2O3 / Zn negative electrode, and V2O3 is used as a protection layer to inhibit growth of zinc dendrites, relieve hydrogen evolution side reaction of the zinc negative electrode and reduce corrosion of zinc. Vanadium oxide V2O3 is directly used as a core positive electrode material, the zinc negative electrode coating is developed by utilizing the characteristics of the vanadium oxide V2O3, a material is formed, meanwhile, the performance optimization of the positive electrode and the negative electrode is realized, the used raw materials are simple and easy to obtain, the process is simple and easy to implement, and the preparation process is simple and easy to implement from V2O3 raw material synthesis to positive and negative electrode piece preparation to V2O3 / ZnV2O3 total battery assembly. And comprehensive improvement of positive and negative electrode performances of zinc ions is simultaneously realized by a single material.

The present application relates to the technical field of binder, and particularly relates to a water-based binder based on coordination cross-linking of polyvalent metal ions and a preparation method and application thereof.A preparation method of a water-based binder based on coordination cross-linking of polyvalent metal ions, specifically comprising the following steps: S1, dissolving carboxymethyl cellulose sodium in water, heating and stirring to form a carboxymethyl cellulose sodium aqueous solution; S2, dissolving a metal ion compound in deionized water to obtain a metal ion compound aqueous solution; the metal ion includes divalent metal ions and trivalent metal ions; S3, slowly adding the metal ion compound aqueous solution to the carboxymethyl cellulose sodium aqueous solution in a certain amount, continuously heating and stirring for a period of time, and obtaining the water-based binder.The mechanical property of the water-based binder is obviously improved, and the battery has better rate and more stable cycle.

The application discloses a composite pyrophosphate magnesium battery positive electrode material and a preparation method and application thereof. The positive electrode material comprises a magnesium ion positive electrode material pyrophosphate and a carbon layer coated on the magnesium ion positive electrode material pyrophosphate. The chemical formula of the positive electrode material is Mg a Na b M 2+x / 2 N y , wherein M is one or more of Fe, V, Ti, Cr, Ni, Cu, Mn, Co, Nb, N is one or more of P2O7 4‑ , PO4 3‑ , SO4 2‑ , BO3 3‑ , SiO4 4‑ , 0

The invention belongs to the field of organic electrolyte and potassium ion batteries, and particularly relates to a high-energy-density potassium ion battery realized by medium-entropy electrolyte applicable to an alloy antimony / conductive carbon negative electrode. The potassium ion battery comprises a Prussian blue (PB) positive electrode, an electrolyte and an antimony / conductive carbon (Sb / SP) negative electrode, and the electrolyte is a medium-entropy electrolyte of potassium bis (fluorosulfonyl) imide (KFSI). The obviously improved rate performance of the medium-entropy electrolyte and the Sb / SP developed by the invention is attributed to a balance solvation structure driven by a double-entropy effect and a weak solvation effect, and the structure provides a collaborative guarantee for enough interface stability and dynamic compatibility. Meanwhile, the electrochemical window of the ether-based electrolyte is widened, the PB positive electrode can stably circulate at 2.0-4.4 V, and the PBMSESb / SP total battery can achieve the high energy density of 194 Wh / kg under the current density of 50 mA / g (based on the total mass of PB and Sb / SP).

The invention relates to the technical field of batteries, in particular to a wide-temperature-range high-rate lithium battery ester-based electrolyte and application. The electrolyte comprises soluble lithium salt and a liquid component, the liquid component is a solvent; the solvent comprises at least three of propylene carbonate, fluoroethylene carbonate, isopropyl trifluoroacetate, ethyl trifluoroacetate, ethyl acetate, methyl acetate and methyl trifluoroacetate; the lithium salt lithium battery comprises at least two of common lithium salts. The electrolyte developed by the invention is used in the lithium battery and can stably work at 40-60 DEG C, the specific discharge capacity of the battery is still 62.83% of the specific discharge capacity of the battery at room temperature even at 30 DEG C and 4C multiplying power, and the electrolyte has excellent wide-temperature fast charge performance. In addition, the electrolyte effectively inhibits the growth of lithium dendrites and the side reaction of an electrode-electrolyte interface at low temperature, and promotes the formation of a solid interface film which is rich in inorganic matters and low in interface impedance. The invention has the advantages of reasonable component design and excellent product performance, and is convenient for industrial application.

This application relates to the field of energy storage materials technology, and more particularly to a titanium-based active material, its preparation method, and its application. The titanium-based active material comprises a mixed oxide having a layered perovskite structure, the mixed oxide having the general chemical formula shown in Formula 1, M... 2± a La x‑y M1 y B n‑z M2 Z O (3n+1)‑δ Q δ Formula 1; in Formula 1, the M site includes H and / or an alkali metal element; the M1 site includes at least one of Mg, Ca, Sr, Ba, and rare earth elements; the M2 site includes a specified transition element and at least one of Al, Ga, In, Si, Sn, Sb, and Bi; the Q site includes at least one of F, Cl, Br, I, N, and S; the B site satisfies: Nb 2n‑3x‑z Ti 3x‑n Or Nb 2n‑3x Ti 3x‑n‑z This titanium-based active material possesses high energy density, ultra-fast charging capability, long cycle life, and intrinsic safety.

This invention belongs to the field of flow battery energy storage technology, and relates to a negative electrode electrolyte for alkaline all-iron flow batteries and its preparation method. The negative electrode electrolyte is prepared from iron salts, a complexing agent, a promoting component, an alkaline component, an auxiliary electrolyte, and water. The total iron concentration is 0.1–2.0 mol / L, the molar ratio of the complexing agent to the iron salt is 1.5–4, the molar ratio of the promoting component to Fe is 0.05–1.0, the alkaline component concentration is 2.0–6.0 mol / L, and the auxiliary electrolyte concentration is 0–2.0 mol / L. The negative electrode electrolyte of this invention for alkaline all-iron flow batteries has a high total iron concentration, which not only avoids the precipitation of elemental iron during charging and discharging, but also effectively prevents the formation of ferric hydroxide precipitate, improves the stability of iron ions, and greatly extends the cycle life of the negative electrode electrolyte. It can be widely used in aqueous alkaline all-iron flow batteries.

The utility model discloses rapid cooling and air-drying integrated equipment for beef and mutton, which comprises a centralized function box body and two processing chambers arranged in the centralized function box body, and a processing mechanism for respectively cooling and air-drying the beef and the mutton in the two processing chambers is arranged at the top of the centralized function box body. According to the utility model, under the interaction of the centralized function box body, the processing chamber, the processing mechanism and the separation mechanism, through the design of the centralized function box body and the independent processing chamber, the same fan is matched with the condensation assembly and the hot drying assembly, so that the integration of cooling and air drying functions is realized, and the equipment space and energy consumption are effectively saved; a circulating pipe fitting and a pressure release valve ensure stable circulation of airflow and improve the treatment efficiency; a separation mechanism can be communicated with or isolate the treatment chamber as required, so that seamless connection of cooling and air drying is realized, manual transfer links are reduced, and the risk of cross contamination is reduced; the continuity of beef and mutton processing and the quality of finished products are improved.

The application discloses a composite lithium-magnesium alloy negative electrode and a preparation and application thereof. After a fluorinated copolymer solution is uniformly loaded on the surface of a three-dimensional conductive framework, the three-dimensional conductive framework is combined with a lithium-magnesium alloy foil in a sandwich arrangement mode, and then the combination is obtained through mechanical rolling. The three-dimensional conductive framework material effectively reduces the size of the local current density, and can also provide sufficient accommodation space for the deposition of metal lithium. The elastic self-adaptive interface rich in LiF formed by using the fluorinated copolymer can accelerate the ion transmission at the interface and maintain the stability in a long cycle process. The lithium-magnesium alloy with the lithium affinity induces the uniform deposition of lithium ions, and the growth of dendrites is inhibited, so that the composite lithium-magnesium alloy negative electrode material with the fluorine-rich lithium elastic self-adaptive interface is constructed.

This invention discloses a method for preparing a surface-modified oxide solid electrolyte, comprising the following steps: S1: reacting an oxide solid electrolyte matrix with a bifunctional ionic liquid modifying compound in the presence of a catalyst under an inert atmosphere to obtain an intermediate of a surface-grafted ionic liquid monomer; S2: subjecting the intermediate obtained in step S1 to a free radical copolymerization reaction with an ethylene glycol divinyl ether monomer in the presence of an initiator, thereby in-situ copolymerizing the grafted ionic liquid monomer and the ethylene glycol divinyl ether monomer to form a polymer coating layer, thus obtaining the surface-modified oxide solid electrolyte. The preparation method of this invention not only eliminates interfacial side reactions through chemical bonding between the ionic liquid modifying compound and residual alkali / hydroxyl groups on the electrolyte surface, but also forms a polyionic liquid / polyether composite coating layer through in-situ copolymerization, possessing both high ionic conductivity and flexible segment characteristics, significantly reducing interfacial impedance and inhibiting lithium dendrite growth.

This invention belongs to the field of flue gas purification technology. It discloses an in-situ regenerated CO catalytic oxidation system. By designing a catalytic bed with a rotary structure and CO and VOCs catalytic reactors with independently partitioned inlet and outlet gas chambers, it can simultaneously perform catalytic oxidation and thermal regeneration of the catalyst, achieving online in-situ catalyst regeneration. This significantly improves the efficiency of flue gas purification, effectively promotes stable catalyst circulation, and ensures efficient flue gas treatment.

The present application belongs to the technical field of solid waste resource utilization and heavy metal pollution control, and relates to a method for deep and gradient separation of heavy metals in biogas residue based on microwave-induced subcritical hydrothermal and magnetic ion imprinting coupling, which comprises the following steps: providing a heat-resistant magnetic ion imprinting composite material, wherein the composite material is a core-shell structure, the inner core is ethylenediaminetetraacetic acid modified magnetic nanoparticles, and the shell is a heat-resistant ion imprinting polymer, and the heat-resistant ion imprinting polymer takes heavy metals to be deeply and gradiently separated as a template; mixing the composite material with biogas residue, then performing microwave subcritical hydrothermal treatment, and then performing magnetic separation. The method of the present application realizes efficient complexation of heavy metals and organic matter through microwave-assisted subcritical water environment, simultaneously realizes target capture of heavy metals through in-situ introduction of heat-resistant magnetic ion imprinting polymer, and finally realizes efficient separation and resource utilization of heavy metals and biogas residue components through magnetic separation.

The application discloses a porphyrin framework polymer and a preparation method and application thereof. The porphyrin framework polymer takes tetra(5-bromothiophenyl) porphyrin as an intermediate, introduces a thiophene substituent at four meso positions of the porphyrin, and is synthesized through Stille coupling reaction with a thiophene tin reagent. The preparation process is mild, and the purification is simple. The obtained polymer has high electrolyte solution solubility and excellent electronic conductivity, effectively solves the technical problems that an organic small-molecule active material is easily dissolved and lost in an organic electrolyte, has poor conductivity and the like, and simultaneously significantly improves the ion transmission capacity of the material. The porphyrin framework polymer is used as a positive electrode active material, is matched with a metal sodium negative electrode and a NaPF6 carbonate electrolyte to assemble a battery, and the battery has a capacity attenuation of no more than 10% under a current of 10 A g ‑1 7000 cycles under a large current, has high specific capacity, excellent rate and long cycle performance, and is suitable for large-scale long-acting energy storage sodium ion batteries.

The invention discloses a composite additive for a zinc ion battery electrolyte, the zinc ion battery electrolyte as well as a preparation method and application of the zinc ion battery electrolyte. The composite additive comprises a carbon nano tube and an anionic surfactant, and the carbon nano tube and the anionic surfactant can generate micelle action to form nano micelle particles. The zinc ion battery electrolyte comprises zinc ions and the composite additive for the zinc ion battery electrolyte. The composite additive disclosed by the invention has multiple functions, and can finally realize multifunctionality of inducing uniform nucleation of zinc at an interface and retarding dendritic crystals and various side reactions through multiple mechanisms such as regulation and control of an H bond network of water molecules, improvement of a hydrated zinc ion solvation structure, generation of a shielding layer after adsorption on the surface of a negative electrode, regulation and control of an electric field and the like. The zinc ion battery electrolyte realizes dendrite-free stable circulation of a zinc negative electrode in a symmetrical battery assembled by using the zinc ion battery electrolyte under various current densities and surface capacities, and the cycle life of the negative electrode is greatly prolonged.

This invention discloses a wide-temperature-range, long-life sodium-ion battery electrolyte, its preparation method, and its applications. The invention uses sodium perchlorate as the sodium salt, synergistically with low-viscosity, low-melting-point methyl acetate to ensure high ionic conductivity of the electrolyte over a wide temperature range. Simultaneously, dimethyl sulfite and fluoroethylene carbonate synergistically construct an inorganic-rich SEI film, significantly improving interfacial stability and cycle performance. The Na||NVP battery, after reversible charge-discharge at 60°C, maintained a discharge specific capacity retention of 88.33% of the initial capacity after 400 stable cycles. Under low-temperature conditions, reversible charge-discharge at currents of 0.1C and 0.3C resulted in stable cycles of 300 and 380 cycles, respectively. The preparation method of this invention is simple, low-cost, easy to implement, requires minimal equipment investment, and is suitable for mass production.

The application discloses a kind of porous composite polymer solid electrolyte and preparation method and solid sodium ion battery thereof.The porous composite polymer solid electrolyte of the application is made of deep eutectic solvent, additive, polymer solution and sodium superionic conductor;The deep eutectic solvent is composed of sodium ion-containing hydrogen bond acceptor and hydrogen bond donor, the sodium ion-containing hydrogen bond acceptor is selected from any one of sodium hexafluorophosphate, sodium tetrafluoroborate, sodium dihydrogen phosphate, sodium difluoro oxalate borate, sodium bis-trifluoromethyl sulfonamide, sodium bisfluorosulfonamide, sodium perchlorate, sodium nitrate, sodium chloride and sodium difluorophosphate;The additive is ethylene carbonate and propylene carbonate;The polymer solution is composed of polymer and organic solvent;The mass ratio of sodium superionic conductor and polymer is 1: (2-5).The porous composite polymer solid electrolyte of the application has excellent ion conductivity, flame retardancy, strong mechanical properties and excellent safety.

The utility model discloses an automatic seasoning oil stirring device which comprises an oil tank, a pumping mechanism, a pumping pipeline and a circulating pipeline, a sealing cover is arranged at the top of the oil tank, and the pumping mechanism is arranged on the side edge of the oil tank; the pumping pipeline is connected between the discharging end of the pumping mechanism and the top of the sealing cover in series and used for pumping oil or raw materials into the oil tank. The circulating pipeline is connected between the discharging end of the oil tank and the feeding end of the pumping pipeline in series and used for circulating and discharging oil at the oil tank. The pumping mechanism is arranged, and meanwhile, the circulating pipeline is additionally arranged, so that the discharging end and the feeding end of the oil tank are connected in series, pumping circulation of oil from the bottom of the oil tank to the top of the oil tank is carried out through the pumping mechanism, and deposited materials and paste can be stably circulated to the top of the oil tank; the oil, the materials and the paste can be fully mixed after the stirring, and meanwhile, the preparation time of the oil is shorter.

The invention relates to a high-voltage solid-state polymer battery based on thermodynamic and dynamic regulation and control as well as a preparation method and application thereof. The high-voltage solid-state polymer battery comprises a positive electrode, a negative electrode and a solid-state polymer electrolyte, the solid-state polymer electrolyte is of a double-layer structure and comprises a positive-electrode-side solid-state polymer electrolyte and a negative-electrode-side solid-state polymer electrolyte; the negative electrode side solid polymer electrolyte comprises a polymer, a first metal salt and an inorganic filler; the positive electrode side solid polymer electrolyte comprises an oligomer and a second metal salt; the working temperature of the solid polymer electrolyte is 40-60 DEG C; according to the high-voltage solid-state polymer battery, electrolyte ion conduction, electrode interface stability and electrode material structure stability are regulated and controlled through thermodynamic and dynamic regulation and control, so that the solid-state battery has excellent cycle performance and high-voltage stability; the invention provides a new thought for the development of high-energy-density and high-safety solid-state batteries.

Provided are an anode material with a surface joined to an adhesive, a preparation method therefor, and use thereof. The anode material with a surface joined to an adhesive includes the anode material and the adhesive joined to the surface of the anode material, where the adhesive includes a first polymer and a second polymer, polymerized monomers of the first polymer include any one or a combination of at least two of an acrylate monomer, an acrylamide monomer, an acrylonitrile monomer, or a styrene monomer, the second polymer is a two-component polymer, and the anode material includes any one of a silicon-carbon anode material, a silicon-oxygen anode material, an artificial graphite anode material, or a natural graphite anode material. The first polymer and the second polymer are joined to the surface of the anode material so that the problems of expansion and aging of the anode material in a cycling process can be alleviated, and the adhesion between active substances of an anode and between the active substances of the anode and a current collector can be increased, thereby improving the overall performance of the material. Thus, a lithium-ion battery containing the anode material with a surface joined to an adhesive has high initial coulombic efficiency and cycle stability.

The application relates to a secondary zinc ion battery and a method for improving the coulomb efficiency and stable long cycle performance of a zinc negative electrode, which realizes the high coulomb efficiency of the zinc negative electrode of the zinc ion battery under large current and long cycle by the synergistic effect of zinc negative electrode surface modification and electrolyte additives, the surface modifier is a metal halide, is dissolved in a polar organic solution, and the electrolyte comprises a zinc salt, a metal ion additive and a solvent. Compared with the prior art, the cycle performance of the zinc negative electrode and the deposition morphology of zinc are significantly improved by the synergistic surface alloying and electrolyte additive, and the zinc negative electrode has excellent zinc deposition morphology and very high metal coulomb efficiency under a relatively high current density and discharge depth.

The invention belongs to the technical field of lithium ion batteries / solid-state batteries, and particularly relates to a cyclotriphosphazene derivative salt-based composite solid-state electrolyte as well as preparation and application thereof. The preparation method comprises the following steps: taking hexa (4-phenoxy lithium carboxylate) cyclotriphosphazene (HCTP-COOH) and lithium hydroxide as reaction raw materials, firstly preparing a lithium salt HCTP-COOLi through a normal pressure solvothermal method, and then preparing the composite solid electrolyte PVDF-HFP / HCTP-COOLi by taking poly (vinylidene fluoride-hexafluoropropylene) (PVDF-HFP) as a polymer matrix. According to the invention, HCTP-COOH is innovatively adopted as a core lithium salt, six lithium carboxylate groups grafted on a phosphazene skeleton have both a lithium ion source and intrinsic flame retardance, and ions are assisted to efficiently migrate. The PVDF-HFP matrix promotes Li < + > dissociation through a strong electronegativity C-F bond, the high dielectric constant and the amorphous region optimize ion transmission, and the excellent mechanical property ensures the forming of the self-supporting electrolyte membrane.

This invention provides a method for preparing and applying a composite zinc anode with high depth of discharge, relating to the power industry. The method includes: using zinc salt and dimethylimidazole as raw materials, modifying them through in-situ aniline polymerization, and calcining to obtain a zinc-supported substrate material; compounding the zinc-supported substrate material with a conductive agent and a binder to form a slurry, coating and drying it to obtain a zinc-supported substrate electrode sheet; and electrodepositing metallic zinc onto the zinc-supported substrate electrode sheet to obtain a composite zinc anode suitable for weakly acidic zinc-ion battery systems. The composite zinc anode prepared by this invention achieves a cycle life of 500 hours under a high depth of discharge of 50%; when the composite zinc anode and a polyaniline cathode are combined to form a full cell, the cycle life reaches 10Ag. ‑1 The material was stably cycled 1000 times under the specified test conditions. This invention also provides a method for synthesizing zinc anode-supported substrate materials with different nitrogen element doping ratios (pyrrole nitrogen, pyridine nitrogen), which is simple and can effectively control the doping ratio of different nitrogen elements.

The invention discloses a cross-linked polyethylene submarine cable and oil-filled submarine cable transition joint and a repairing method, the cross-linked polyethylene submarine cable and oil-filled submarine cable transition joint comprises a connecting shell, the connecting shell is provided with an epoxy resin prefabricated body, a silicone rubber stress cone, an oil paper stress cone and a conductor connecting pipe, the epoxy resin prefabricated body is fixedly arranged in the connecting shell, and the silicone rubber stress cone is fixedly arranged in the conductor connecting pipe. The silicon rubber stress cone is located at one end of the epoxy resin prefabricated body, the oil paper stress cone is located at the other end of the epoxy resin prefabricated body, an epoxy bell-shaped opening is formed in the end, close to the oil paper stress cone, of the epoxy resin prefabricated body, and an oil way channel is formed in the epoxy bell-shaped opening. The center of the epoxy resin prefabricated body is provided with a conductor connecting pipe, and two ends of the conductor connecting pipe are respectively provided with a crosslinked polyethylene submarine cable interface and an oil-filled submarine cable interface. Through cooperation of the epoxy resin prefabricated body, the silicone rubber stress cone and the oil paper stress cone, dielectric constant transition of different insulating medium interfaces can be optimized, electric field distortion is reduced, the partial discharge risk is reduced, and the electrical insulation reliability is guaranteed.

The application relates to the technical field of battery positive electrode materials, in particular to a synergistically modified high-voltage positive electrode material and a preparation method and application thereof, which comprises a bulk particle, a doped layer coated on the surface of the bulk particle and a coating layer coated on the surface of the doped layer; the bulk particle comprises lithium nickel cobalt manganese oxide; the doped layer is lithium nickel cobalt manganese oxide doped with fluorine elements in a bulk phase; and the coating layer comprises a lithium fluoride coating layer and lithium nickel cobalt manganese titanium oxide particles embedded in the lithium fluoride coating layer. The preparation method comprises the following steps: firstly, a nickel cobalt manganese hydroxide precursor is prepared by adopting a coprecipitation method; then, a doped layer and a coating layer are synthesized on the surface of the nickel cobalt manganese hydroxide precursor by adopting a solvothermal method; finally, calcination treatment is carried out to obtain the synergistically modified high-voltage positive electrode material. The synergistic modification strategy of bulk phase doping and surface coating effectively guarantees the stability of the interface and bulk structure, the preparation process is simple, and the electrochemical performance of the positive electrode material under high voltage, high cycle, high rate or high-temperature environment is improved.

The invention belongs to the technical field of new energy batteries, and particularly relates to a magnesium metal battery water-resistant electrolyte as well as a preparation method and application thereof. The magnesium metal battery water-resistant electrolyte is prepared from the following raw materials: magnesium salt, metal or non-metal halide, an organic ether solvent and a boric acid ester additive. According to the water-resistant electrolyte for the magnesium metal battery, boric acid ester additives react with water molecules, the content of free water or coordinated water is reduced, meanwhile, components of an electrode / electrolyte interface are improved through preferential decomposition, and a more stable SEI / CEI (solid electrolyte interface film / positive electrode electrolyte interface film) is formed, so that the water resistance of the battery is remarkably improved, and the service life of the battery is prolonged. And after water (especially water content of 0-50000 ppm) is added, stable circulation can still be realized, and the preparation cost, drying cost and environmental requirements of the magnesium metal battery can be greatly reduced.

The utility model provides a cylindrical battery in order to solve the problem that in the prior art, when a new energy vehicle is impacted, a lithium ion / sodium ion cylindrical battery is evolved into a larger fire in a short time under the condition that the lithium ion / sodium ion cylindrical battery is damaged and is on fire. The heat insulation layer comprises a heat insulation side wall and a heat insulation bottom; a through hole is formed in the center of the heat insulation bottom; the cylindrical battery comprises a shell, a roll core, positive / negative current collecting plates and a heat insulating layer. The utility model belongs to the technical field of batteries. The cylindrical battery heat insulation structure has remarkable advantages. In the aspect of heat insulation performance, the heat insulation layer made of alumina ceramic fiber materials is low in heat conductivity and can effectively block high temperature and reduce the risk of thermal runaway; in the aspect of electrolyte circulation, a through hole in the heat insulation bottom is reasonably designed and is polished to ensure stable circulation of the electrolyte; in the aspect of structural stability, the organic silicon rubber binder is high in bonding strength at a high temperature, has elasticity and can buffer stress; the hydrophobic layer and the heat insulation cushion pad protect the internal structure of the battery in all directions.

The invention discloses a marine water-cooling integrated refrigeration house refrigeration device, which relates to the field of marine refrigeration equipment, and comprises a house outer shell, a house inner shell, brackets horizontally arranged at intervals, a refrigeration integrated assembly, a water-cooling heat dissipation integrated assembly and house inner and outer heat insulation plates, the supports are connected with the warehouse inner shell and the warehouse outer shell to form an integrated metal plate structure, the warehouse inner shell extends into the refrigeration storage in a suspended mode, only the warehouse outer shell is fixed to a ship body, the supports are internally provided with connecting channels, the refrigerant circulating pipelines are internally arranged in the channels, and input pipes and return pipes are arranged on the different supports. The warehouse inner heat preservation plates and the warehouse outer heat preservation plates are embedded between the supports and can block installation openings. And an air return distance is reserved between the air return device and the axial flow fan. A finned evaporator, a defrosting heating pipe and a water pan are arranged in the in-warehouse shell, and the unit is matched with an automatic defrosting and cooling water flow protection mechanism. The unit is compact in structure, convenient to install and maintain, excellent in swing resistance and salt spray corrosion resistance, adaptive to ship operation working conditions, high in refrigeration and heat dissipation efficiency and high in operation stability.

The utility model relates to the marine ship electrical field, and discloses an offshore wind power installation ship-used dehumidification and salt mist prevention power distribution cabinet, which comprises a power distribution cabinet body, one side of the power distribution cabinet body is provided with two power distribution cabinet doors through hinges, the interior of the power distribution cabinet body is provided with a heating assembly, and the exterior of the power distribution cabinet body is provided with a water inlet and a water outlet. An air supply fan is installed on the inner wall of the power distribution cabinet body, a semiconductor heating piece is arranged on one side of the air supply fan, a first radiator is arranged outside the air supply fan, an air suction fan is installed on the inner wall of the power distribution cabinet body, and a cold dissipation device is arranged outside the air suction fan. According to the utility model, electrical equipment of the power distribution cabinet of the offshore wind power installation ship can be directly dried and subjected to salt mist removal treatment through the dryer equipment, stable circulation of air in the power distribution cabinet is promoted through a mode of heating the lower part and refrigerating the upper part, and water vapor and salt mist in the air are discharged.

The utility model discloses a kind of high sealing heat pump drying devices, including heat exchanger, cover body and air pipe assembly, cover body is equipped with heat exchange cavity, heat exchanger is installed in heat exchange cavity, and heat exchange cavity is divided into first cavity section and second cavity section by heat exchanger. Cover body includes first shell and second shell, first shell and second shell mutually link in a circumferential direction, and are enclosed to form heat exchange cavity. First shell and second shell are sealedly connected by first sealing element;First shell and second shell are equipped with heat preservation layer on;Air pipe assembly includes two air pipes, one air pipe is communicated with first cavity section, and another air pipe is communicated with second cavity section. The first shell and second shell outside the heat exchanger are sealedly linked by first sealing element, and heat preservation layer is equipped on two shells, reduce the loss caused by the leakage of heat energy in cavity due to gap, improve heat exchange efficiency;Meanwhile, it can also effectively reduce the risk of waste gas overflow from the gap of shell link.