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Preparation method of sulfur-doped black phosphorus-carbon composite negative electrode material
PendingCN119601617AIncrease energy densitymeet development needsCell electrodesSecondary cellsCarbon compositesElectrical battery
The invention belongs to the technical field of lithium ion battery negative electrode materials, and particularly relates to a method for preparing a lithium ion battery negative electrode material from sulfur-doped black phosphorus-carbon. A carbon material and sulfur powder are subjected to ball milling, uniform mixing and vacuum high-temperature calcination to obtain a sulfur-doped carbon material; and uniformly mixing the sulfur-doped carbon material with black phosphorus, and performing high-energy ball milling in an inert atmosphere to obtain the sulfur-doped black phosphorus-carbon composite negative electrode material. According to the preparation method provided by the invention, the black phosphorus, the carbon material and the sulfur are well combined, so that the high capacity of the material is ensured, the structural stability of the composite material can be improved, the polarization of the material is reduced, and the cycling stability and the rate capability of the battery are improved.
Owner:HUBEI XINGFA CHEM GRP CO LTD
Aviation aluminum alloy pipe type casting polishing device
ActiveCN222570119Ueasy to driveRealize grinding workEdge grinding machinesRevolution surface grinding machinesAviationElectric machinery
The utility model discloses an aviation aluminum alloy pipe type casting polishing device which comprises a base, two sets of supporting seats are arranged on the base, two sets of first electric push rods are symmetrically arranged on the two sets of supporting seats through supporting grooves, supporting roller sets are arranged at the output ends of the first electric push rods, and a second electric push rod is arranged above the base through a mounting frame. A driving roller set is arranged at the bottom end of the second electric push rod, an external grinding block is arranged on one side of the middle of the supporting base and the driving roller set, a movable driving structure is arranged in cooperation with the external grinding block, and a mounting base is arranged on one side of the base through a third electric push rod. A first motor, a fourth electric push rod and an internal grinding roller which are sequentially connected are arranged on the mounting base, flexible supporting and rotating driving of the aviation aluminum alloy pipe type casting during grinding can be achieved, meanwhile, synchronous grinding of the interior and the outer wall of the aviation aluminum alloy pipe type casting can be achieved synchronously, and the machining efficiency is improved.
Owner:HENAN GUORONG PRECISION HEAVY MASCH CO LTD
Composite positive electrode material, positive plate and secondary battery
PendingCN119133380AImprove high temperature resistanceincrease gram capacityCell electrodesSecondary cellsCarbon coatingIron sulfate
The invention discloses a composite positive electrode material, a positive plate and a secondary battery, the composite positive electrode material comprises a composite sodium ferric sulfate material and a carbon-coated ferric sodium pyrophosphate material, the composite sodium ferric sulfate material comprises a first carbon material and sodium ferric sulfate, and the first carbon material and the sodium ferric sulfate are blended; the carbon-coated ferric sodium phosphate pyrophosphate material comprises a second carbon material and ferric sodium phosphate pyrophosphate, and the second carbon material coats the ferric sodium phosphate pyrophosphate; the composite sodium ferric sulfate material is coated with the carbon-coated sodium ferric pyrophosphate material. The composite sodium ferric sulfate material is coated with the carbon-coated sodium ferric pyrophosphate material, so that the high-temperature resistance of the composite positive electrode material can be improved; through the coating effect of the whole carbon-coated ferric pyrophosphate material on the composite sodium ferric sulfate material, the second carbon material can be coated on the composite sodium ferric sulfate material, equivalently, a carbon coating layer is formed on the surface of sodium ferric sulfate, the coating property is good, sodium ion removal is facilitated, and the service life of the composite sodium ferric sulfate material is prolonged. Further, the gram volume and the energy density of the composite positive electrode material are improved.
Owner:JIANGSU ZOOLNASM ENERGY TECH CO LTD
Nitrogen self-doped phenolic resin-based hard carbon microspheres as well as preparation method and application thereof
ActiveCN119430140AUniform sizereduce removalNegative electrodesSecondary cellsResin microspherePtru catalyst
The invention belongs to the field of new energy materials and devices, and particularly discloses nitrogen self-doped phenolic resin-based hard carbon microspheres and a preparation method and application thereof.The preparation method comprises the following steps that nitrogen-containing phenol monomers, aldehyde monomers and a basic catalyst are mixed according to a certain sequence, and after prepolymerization is conducted at the low temperature, the nitrogen self-doped phenolic resin-based hard carbon microspheres are obtained; carrying out high-temperature hydrothermal reaction to obtain phenolic resin microspheres; and sequentially carrying out low-temperature carbonization treatment and high-temperature carbonization treatment to obtain the nitrogen self-doped phenolic resin-based hard carbon microspheres. Compared with the existing nitrogen-doped resin hard carbon preparation method, the nitrogen-self-doped phenolic resin hard carbon has the advantages that a nitrogen source is introduced into the phenolic resin hard carbon from the source end of the resin, the production process is simplified, and uniform distribution and atomic-scale doping of the nitrogen element are realized. The material is used for sodium ion batteries, has excellent long cycle stability, good rate capability and high specific capacity, and has industrial application prospects.
Owner:CENT SOUTH UNIV +1
Anion-cation doped modified cobalt-free lithium-rich manganese-based positive electrode material and preparation method thereof
ActiveCN119390135Astable structurepromote circulationCell electrodesSecondary cellsElectrical batteryManganese
The invention relates to the technical field of lithium ion batteries, in particular to a modified cobalt-free lithium-rich manganese-based positive electrode material doped with anions and cations and a preparation method of the modified cobalt-free lithium-rich manganese-based positive electrode material. According to the method, a modified lithium-rich manganese-based precursor is prepared from a metal salt solution, a precipitator, a fluorine source and a complexing agent, and the anion-cation co-doped cobalt-free lithium-rich manganese-based positive electrode material is prepared from the modified lithium-rich manganese-based precursor and a lithium source. The metal salt solution contains manganese salt, nickel salt and aluminum salt. According to the method, by doping Al and F, the voltage attenuation is effectively reduced, the long cycle performance of the material is improved, the rate capability of the material is improved, and in addition, mixed arrangement of lithium and nickel cations is effectively inhibited, so that the cycle stability is improved.
Owner:WUHAN INST OF TECH +1
Positive lithium supplement agent, positive pole piece, secondary battery and electric device
ActiveCN119650648Aincrease consumptionEasy to embedNon-aqueous electrolyte accumulator electrodesLi-accumulatorsElectrolytic agentElectrical battery
The invention discloses a positive electrode lithium supplementing agent, a positive electrode plate, a secondary battery and a power utilization device, and belongs to the technical field of batteries, the positive electrode lithium supplementing agent comprises lithium phytate and a lithium supplementing agent, and the lithium supplementing agent comprises at least one of Li5FeO4, Li6CoO4 and Li2NiO2. The lithium phytate and the lithium supplementing agent are combined to serve as the positive electrode lithium supplementing agent, the lithium phytate and the lithium supplementing agent act together, active oxygen and metal ions released by the lithium supplementing agent are adsorbed, side reactions of the electrolyte are reduced, the electrochemical stability of a system is maintained under high voltage, meanwhile, lithium can be completely released under a high-voltage lithium cobalt oxide system, and the service life of the lithium battery is prolonged. The release amount of a lithium source is effectively increased, the lithium consumption of a negative electrode SEI film forming reaction is fully supplemented, the embedding and separating process of lithium ions in a positive electrode material is promoted, the gas expansion of the secondary battery is improved, and the cycle life of the secondary battery is effectively prolonged.
Owner:ZHEJIANG LIWINON ENERGY TECHNOLOGY CO LTD
Elastic opening and closing shoe easy to put on and take off
ActiveCN222622299URealize easy putting on and taking off functionGuarantee stabilityUpperBootlegsMechanical engineering
The utility model discloses a pair of elastic opening and closing shoes easy to put on and take off. The shoe body comprises a sole, a vamp and an elastic piece; the vamp comprises a half sole part, a heel part and a connecting part which are all connected to the sole, the connecting part is close to the sole and is connected with the lower end parts of the half sole part and the heel part, and the upper end parts of the half sole part and the heel part are separated from each other; the heel part is suitable for being switched between a first state and a second state under the action of external force, when the heel part is in the first state, the heel part is close to the half sole part and matched with the half sole part to form a shoe opening, and when the heel part is in the second state, the heel part is far away from the half sole part and enables the shoe opening to be opened; the elastic piece is connected with the half sole part, the heel part and the connecting part and is suitable for being unfolded under the action of external force, so that the heel part enters the second state; and when the external force is lost, the elastic piece rebounds and resets, so that the heel part returns to the first state. The utility model provides an elastic opening and closing shoe easy to put on and take off, which is easy to open, has excellent recovery performance and ensures the convenience of the shoe in the putting on and taking off process.
Owner:ANTA (CHINA) CO LTD
Preparation method of biomass hard carbon negative electrode material and application of biomass hard carbon negative electrode material in energy storage field
PendingCN119660733Alow ash contentEfficient removalCell electrodesSecondary cellsHydrofluoric acidStored energy
The invention relates to a preparation method of a biomass hard carbon negative electrode material and application of the biomass hard carbon negative electrode material in the field of energy storage. The method comprises the following steps: carrying out pretreatment, crushing and pre-carbonization treatment on a biomass raw material to obtain a pre-carbonized material; mixing and stirring the pre-carbonized material and an acid solution, washing and drying to obtain an acid-treated hard carbon material; soaking the obtained acid-treated hard carbon material in an alkaline solution, heating and stirring, washing and drying to obtain an alkali-treated hard carbon material; mixing the obtained alkali-treated hard carbon material with a pore-forming agent, carrying out ball milling, carrying out solid-liquid separation, and carrying out high-temperature carbonization and grinding on the obtained solid phase to obtain a powder sample; and mixing the obtained powder sample with hydrofluoric acid, and carrying out hydrothermal treatment to obtain the biomass hard carbon negative electrode material. The sodium ion battery prepared by taking the biomass hard carbon negative electrode material as a negative electrode material has the characteristics of high initial coulombic efficiency, high low-voltage platform specific capacity and excellent cycle performance and rate capability.
Owner:SUZHOU CITY UNIV
A bamboo hard carbon material and preparation method thereof
ActiveCN118908185BImprove interface compatibilityImprove electrochemical performanceNegative electrodesSecondary cellsO-Phosphoric AcidCarbonization
The invention discloses a bamboo hard carbon material, comprising the following components in parts by weight: 65-70 parts of bamboo powder, 6-8 parts of phosphoric acid, 5-7 parts of ethylenediamine, 4-6 parts of N-hydroxysuccinimide, 3-6 parts of 2,5-furan dimethanol, and 80-90 parts of deionized water. The bamboo hard carbon material is prepared by the following method: bamboo is pre-treated and carbonized, ball-milled to obtain 500-mesh bamboo powder, then mixed with phosphoric acid, ethylenediamine, N-hydroxysuccinimide, 2,5-furan dimethanol, deionized, dried, filtered to obtain modified bamboo powder, and then the modified bamboo powder is carbonized at high temperature and plasma treated to obtain the bamboo hard carbon material. The bamboo hard carbon material prepared by the present invention can be used as a negative electrode material of an ion battery, which can effectively improve the specific capacity, initial coulomb efficiency, and rate performance of the ion battery, and enhance its cycle stability, prolong service life, and the production process is simple and easy to promote.
Owner:SHAANXI PUSTAR ENVIRONMENTAL PROTECTION TECH CO LTD
Gas-phase silicon-carbon negative electrode material of porous carbon base material
PendingCN119252877ALarge specific surface areaImprove adsorption capacityMaterial nanotechnologyNegative electrodesCarbon compositesCarbon coating
The invention relates to a gas-phase silicon-carbon negative electrode material of a porous carbon base material, which comprises the following steps: preparing porous starch, preparing a silicon / porous carbon composite material, preparing a micron porous Mg2Si negative electrode, preparing a nano porous silicon / carbon composite negative electrode, performing carbon coating by a porous silicon acetylene CVD (Chemical Vapor Deposition) method, and controllably preparing the gas-phase silicon-carbon negative electrode material of the porous carbon base material. The gas phase precipitation method and the alloying method are creatively combined, the prepared negative electrode material has higher specific capacity and energy density, rapid transmission of lithium ions is facilitated, the stability of an electrode structure is kept, and the negative electrode material has the advantages of being good in cycle performance, high in safety, high in energy density and the like.
Owner:ZHEJIANG WESTON NEW MATERIALS CO LTD
A subway platform protective shielding door
ActiveCN118701111BReduce clamping forcepromote prolapseRailway componentsWing arrangementsClassical mechanicsStructural engineering
The invention discloses a subway platform protective shielding door, which relates to the technical field of subway protective shielding doors. The technical solution thereof includes an upper track, a lower track, a fixed leaf arranged between the upper track and the lower track, and a movable leaf sliding on the upper track and the lower track. The movable leaf is provided with a receiving groove, and a movable door with limited movement is arranged in the receiving groove. The movable leaf and the movable door are connected by a first spring. The shielding door is provided with a movable door that can slide in a limited position in the receiving groove provided on the movable leaf, and the two are connected by a first spring, so that the shielding door first closes the entrance and exit passage through the contact of the movable door during the closing process, and then the passenger will be clamped by the movable door if he / she fails to run in time, and the clamping force of the movable door is small, so that it is convenient for the passenger to escape from between the movable doors, thereby avoiding personal injury and damage to the passenger's belongings, and improving the stability of the subway operation order.
Owner:CHINA TIESIJU CIVIL ENGINEERING GROUP CO LTD +1
Ammonium vanadate positive electrode material and preparation method and application thereof
ActiveCN119284950AImprove conductivityImprove intrinsic conductivityCell electrodesSecondary cellsOXALIC ACID DIHYDRATEFiber
The invention relates to the technical field of aqueous zinc ion battery positive electrode materials, in particular to an ammonium vanadate positive electrode material and a preparation method and application thereof. The invention provides a preparation method of an ammonium vanadate positive electrode material, which comprises the following steps: mixing an ammonium metavanadate solution and gas phase growth carbon fibers, sequentially adding cyclodextrin and anhydrous oxalic acid, and carrying out hydrothermal reaction to obtain the ammonium vanadate positive electrode material. The ammonium vanadate positive electrode material prepared by the method disclosed by the invention has excellent cycling stability and rate capability.
Owner:HENAN UNIVERSITY
Preparation method of fluorinion-induced manganese oxide composite material and application of fluorinion-induced manganese oxide composite material as positive electrode material in aqueous magnesium ion capacitor
PendingCN119626793AEnhanced Diffusion KineticsEasy to embedHybrid capacitor separatorsHybrid capacitor electrodesCapacitancePotassium fluoride
The invention belongs to the technical field of materials, and relates to a preparation method of a fluorinion-induced manganese oxide composite material and application of the fluorinion-induced manganese oxide composite material as a positive electrode material in an aqueous magnesium ion capacitor. The preparation method comprises the following steps: firstly, preparing a MnO2 precursor from a positive electrode through a hydrothermal method, and annealing to obtain a pure-phase MnO2 nanoflower structure; the preparation method comprises the following steps: preparing MnO2 nanoflowers, adding the prepared MnO2 nanoflowers into polyethylene glycol, adding manganese chloride, potassium fluoride and polyvinylpyrrolidone, carrying out ultrasonic dispersion for 30 minutes, continuously stirring for 1 hour, and transferring the obtained mixed solution into a Teflon reaction kettle for hydrothermal reaction to obtain the MnO2 / Mn2O3 / KMnF3 composite material. The composite material is used as a positive electrode and activated carbon is used as a negative electrode to assemble a water-based magnesium ion capacitor device, and the water-based magnesium ion capacitor device can reach relatively high specific capacitance after an electrochemical test. According to the invention, a hydrothermal method is adopted for synthesis, the process is simple, the material cost is low, and the material is non-toxic and harmless, so that the capacitor has high practical application value and is expected to become a novel green energy storage device.
Owner:LIAONING UNIVERSITY
Preparation method for using lotus petiole derived hard carbon as negative electrode of sodium ion battery
InactiveCN119490176AImprove electrochemical performanceincrease disorderNegative electrodesSecondary cellsChemical treatmentElectrical battery
The invention belongs to the field of sodium-ion batteries, and particularly relates to a preparation method of lotus petiole derived hard carbon as a negative electrode of a sodium-ion battery. Firstly, lotus petiole is subjected to pretreatment such as washing and drying to remove surface impurities, then a pretreated material is obtained by adopting a microwave-assisted and chemical treatment method, and finally, the hard carbon material with good stability is obtained by high-temperature carbonization in a nitrogen atmosphere. The half-cell assembled by the biomass derived hard carbon prepared by the invention has excellent electrochemical performance. In the preparation process, raw materials are cheap and easy to obtain, the cost is low, the method is simple and easy to implement, the preparation efficiency is high, and no template or surfactant exists. A half battery assembled by the prepared hard carbon material has relatively high specific capacity, has the reversible capacity of 342.4 mAh g <-1 > under the current density of 20 mA g <-1 >, and still has the capacity retention rate of 90.2% after 2000 cycles under the current density of 1 A g <-1 >. In addition, the natural lotus petiole is used as the raw material, the material is easy to obtain and low in cost, and comprehensive utilization of biomass waste is achieved.
Owner:WENZHOU UNIV CARBON NEUTRALITY TECH INNOVATION RES INST
Battery pack mounting and positioning structure
ActiveCN222360850Uavoid bumpingEscape smoothlyElectric propulsion mountingCell component detailsElectrical batteryMechanical engineering
The utility model provides a battery pack mounting and positioning structure which comprises a first positioning unit arranged between a battery pack and a vehicle body and a second positioning unit arranged among the battery pack, the vehicle body and a battery pack tray. The first positioning unit is provided with a first positioning piece and a first positioning hole matched with the first positioning piece, and a first positioning gap is formed between the first positioning piece and the first positioning hole. The second positioning unit is provided with a second positioning piece and a second positioning hole matched with the second positioning piece, a second positioning gap is formed between the second positioning piece and the second positioning hole, and the first positioning gap is larger than the second positioning gap. According to the battery pack installing and positioning structure, the first positioning unit can play a role in guiding assembly and preventing the battery pack from colliding with peripheral parts in the battery pack installing process, the second positioning unit facilitates centering of connecting points of the battery pack and a vehicle body, and meanwhile the second positioning unit can be used for positioning the battery pack after the battery pack is assembled. And the first positioning piece can be conveniently and smoothly disassembled.
Owner:GREAT WALL MOTOR CO LTD
A bamboo-based and lignin-based hard carbon composite material, its preparation method and application
This invention belongs to the field of hard carbon technology, specifically relating to a bamboo-based and lignin-based hard carbon composite material, its preparation method, and its applications. The process involves pretreating raw materials to obtain pretreated material; pretreating the pretreated material with an acidic oxidant to obtain acidic oxidant pretreated material; pre-oxidizing the acidic oxidant pretreated material to obtain pre-oxidized material; pre-carbonizing the pre-oxidized material under a protective atmosphere to obtain pre-carbonized material; pulverizing the pre-carbonized material to obtain pulverized material; acid washing followed by water washing to obtain purified material; soaking the purified material in acid, filtering, and drying to obtain soaked material; mixing the soaked material with a modifier, and high-temperature coating and carbonizing under a protective atmosphere to obtain bamboo-based coated hard carbon or lignin-based coated hard carbon. Mixing the two types of hard carbon and carbon coating yields a bamboo-based and lignin-based hard carbon composite material, which is used in negative electrode sheets and batteries. When applied to batteries, the hard carbon composite material of this invention can improve battery energy density.
Owner:福建容钠新能源科技有限公司 +1
Preparation method of negative electrode of lithium ion battery
PendingCN119480930AEasy to embedpromote prolapseMaterial nanotechnologyNegative electrodesElectrical batteryPyrrolidinones
The invention discloses a preparation method of a lithium ion battery negative electrode, and relates to the technical field of lithium batteries, and the preparation method comprises the following steps: S1, taking a self-assembled carbon nanotube and a carbonized polyimide film, mixing and grinding to obtain an active substance; s2, mixing and grinding an active substance and acetylene black to obtain electrode powder; s3, polyvinylidene fluoride is dissolved in N-methyl pyrrolidone, and an electrode adhesive is obtained; s4, uniformly mixing the electrode powder and an electrode adhesive to obtain electrode slurry; and S5, coating the surface of a copper foil with the electrode slurry, and drying to obtain the lithium ion battery negative electrode. The self-assembled carbon nanotubes and the carbonized polyimide film are mixed and ground to obtain an active substance, acetylene black is supplemented to prepare the electrode powder, and the N-methyl pyrrolidone solution of polyvinylidene fluoride is used as an electrode binder, so that the prepared lithium ion battery negative electrode can effectively improve the capacity and cycling stability of the lithium ion battery.
Owner:GUANGDONG VOCATIONAL & TECHNICAL COLLEGE
Cup cover
ActiveCN224131750Uhigh strengthavoid deformationLidsDrinking vesselsConvex structureStructural engineering
The utility model relates to a cup cover which comprises a polygonal cover body, an annular buckle structure is arranged on the inner side wall of the polygonal cover body in an inward protruding mode, the annular buckle structure comprises a plurality of first buckle structures and a plurality of second buckle structures, the first buckle structures are arranged corresponding to a plurality of corner positions of the polygonal cover body respectively, and the second buckle structures are arranged corresponding to a plurality of corner positions of the polygonal cover body respectively. The height of the first buckle structure protruding out of the inner side wall of the polygonal cover body is smaller than the height of the second buckle structure protruding out of the inner side wall of the polygonal cover body. The center of the top wall of the polygonal cover body is sunken downwards to form a sunken structure, the outer ring of the top wall of the polygonal cover body is sunken upwards to form an outer ring protruding structure surrounding the periphery of the sunken structure, the outer ring protruding structure comprises multiple sets of reinforcing assemblies, and each set of reinforcing assembly comprises a first protrusion and a second protrusion. At least part of the second protrusion is arranged on the periphery of at least part of the first protrusion in a surrounding mode. The cup cover solves the problems that an existing cup cover is soft and not easy to open.
Owner:INNER MONGOLIA YILI IND GROUP CO LTD
Negative pole piece, secondary battery and electric device
ActiveCN119230717Areduce aggregationReduce DC resistanceElectrode manufacturing processesSecondary cellsElectrical batteryBattery cell
The invention provides a negative pole piece, a secondary battery and an electric device. The negative electrode plate comprises a negative electrode current collector and a negative electrode film layer located on at least one side of the negative electrode current collector, and the negative electrode film layer comprises a binder; wherein the negative electrode film layer comprises a first area and a second area, the mass ratio of the binder in the first area to the binder in the second area is 0.1-1.4, and the first area is an area where the surface of one side, far away from the negative electrode current collector, of the negative electrode film layer extends towards the interior of the negative electrode film layer by a distance within h / 2, and the second area is an area where the surface of the other side extends towards the interior of the negative electrode film layer by a distance within h / 2. The second area is an area where the surface of one side, close to the negative current collector, of the negative electrode film layer extends to the first area by a distance within h / 2, h represents the thickness of the negative electrode film layer, and the negative electrode piece is subjected to flame heating treatment.
Owner:CONTEMPORARY AMPEREX TECHNOLOGY CO LTD
Fastening device for preventing cabin door from falling off
ActiveCN119554303Apromote prolapseimprove power transmissionPinsWashersScrew threadTransmission performance
The invention discloses a cabin door non-disengaging fastening device which comprises a connecting pin fixedly installed on a cabin door, and one end of the connecting pin is configured to be a circular truncated cone; the connecting sleeve is fixedly mounted on the door frame and is provided with a conical notch matched with the circular truncated cone; the connecting screw penetrates through the connecting pin and is matched with the threaded hole in the connecting sleeve; the gasket is arranged in the connecting pin; the spring is sleeved on the connecting screw; and the top cover is mounted on the connecting pin and is of a hollow structure. The connecting pin and the connecting sleeve are matched with the side face of the conical notch through the circular truncated cone, the good force transmission performance is achieved, and the problem that a large-radian cabin door is clamped when being opened is solved; when the cabin door is opened, the connecting screw is jacked up by the spring to be completely separated from the threaded hole in the connecting sleeve, and meanwhile the top cover prevents the connecting screw from being separated and lost. The cabin door connection mechanical property requirement of a spacecraft in a severe launching environment is met, and meanwhile an astronaut can conveniently open and fasten the cabin door in an on-orbit weightless environment.
Owner:CHANGCHUN INST OF OPTICS FINE MECHANICS & PHYSICS CHINESE ACAD OF SCI
Support, heat exchange assembly and air conditioner
ActiveCN116447742Bchange lengthAchieve length adjustmentMechanical apparatusLighting and heating apparatusMechanical engineeringPhysics
This invention provides a bracket, a heat exchange component, and an air conditioner. The bracket is disposed on a heat exchanger and is used to fix the sterilization component. The bracket includes: a first bracket; a second bracket; and a connecting rod, which includes a first end and a second end, the first end being connected to the first bracket and the second end being connected to the second bracket. The first bracket is used to rotate around the first end, and the second bracket is used to rotate around the second end. The problem solved by this invention is how to make the sterilization bracket usable in different models of air conditioners. Compared with the prior art, the technical effect achieved by this invention is that by rotating the first and second brackets, the overall length of the bracket is changed, thereby enabling the bracket to adapt to different models of air conditioners.
Owner:NINGBO AUX ELECTRIC CO LTD +1
Single-row ball bearing
The utility model discloses a single row ball bearing relates to bearing field, and its technical scheme main points are: including inner ring and outer ring, is provided with retainer and ball between inner ring and outer ring, and the retainer includes two combination rings, and the installation hole and the clamping hole are all seted up on two combination rings, and the clamping piece is slidably connected in the installation hole, and one end of clamping piece is seted up with the deformation groove, and the clamping piece is fixedly connected with the clamping wing of both sides in the deformation groove. When clamping piece is clamped into the clamping hole, the clamping wing is in contact with one side of the combination ring, which ensures the stability between the two combination rings. When people need to separate the two combination rings, they only need to deform the two clamping wings into the deformation groove, so that the two clamping wings are retracted into the clamping hole. At this time, people can slide the clamping piece to make the clamping piece and the clamping hole separate. The above setting facilitates people to replace the ball in the bearing, thereby ensuring the service life of the bearing as a whole.
Owner:XINCHANG MINGYU BEARING CO LTD
Lithium-rich manganese-based positive electrode material and preparation method and application thereof
PendingCN119118221ASmall and uniform grain sizepromote prolapseCell electrodesSecondary cellsLithiumSolid reaction
The invention discloses a lithium-rich manganese-based positive electrode material as well as a preparation method and application thereof, and belongs to the technical field of lithium-rich manganese-based positive electrode materials. According to the positive electrode material disclosed by the invention, the lithium-rich manganese-based positive electrode material is prepared by mixing the transition metal carbonate precursor subjected to pre-decomposition heat treatment with the lithium source, then carrying out segmented heat treatment and carrying out solid-solid reaction, so that the diffusion distance of lithium ions in the synthesis process can be limited, and the abnormal growth of crystal grains is inhibited; the lithium-rich manganese-based positive electrode material with small and uniform grain size is prepared, and the small grain size is beneficial to de-intercalation of lithium ions in the charging and discharging process, so that the charging capacity and the discharging capacity are improved at the same time.
Owner:NINGBO INST OF MATERIALS TECH & ENG CHINESE ACAD OF SCI
Dehydration device and dehydration method for dried vegetable products
The invention relates to a filter barrel pressing device for vegetable processing. The device comprises components such as a pressing mechanism, a filter barrel, a barrel seat and a discharge mechanism. The filter barrel adopts a hollow structure that passes through from top to bottom and a detachable petal, and has good air permeability and internal space. The filter barrel is automatically moved between different workstations by a transfer mechanism. The design concept of the filter barrel and the barrel seat is to use the pressure generated by the pressing mechanism to mainly act on the lower part of the filter barrel, and the barrel seat plays a supporting role to digest the pressure, thereby realizing effective pressure control. The lower part of the filter barrel can be opened, and the unloading mechanism can be automatically lifted to realize rapid unloading; it can be automatically closed after being lowered. This design realizes stability when subjected to greater pressure and efficient material processing. Compared with the prior art, the present invention makes improvements in the air permeability design of the filter barrel, the structural design of the pressing container, and the automatic operation of the filter barrel, thereby realizing the improvement of the working efficiency and filtering effect of the pressing device.
Owner:ZHEJIANG CAIWEIJU AGRI DEV CO LTD
Preparation method of phenolic resin / sucrose-based hard carbon material and material
InactiveCN119118108AGuaranteed yieldImprove structural stabilityCell electrodesSecondary cellsSucroseHexamethylenetetramine
The invention relates to the technical field, and provides a phenolic resin / sucrose-based hard carbon material preparation method and material.The phenolic resin / sucrose-based hard carbon material preparation method comprises the steps that phenolic resin and N, N-dimethylformamide are adopted according to the proportion to prepare a solution A, sucrose, hexamethylenetetramine and deionized water are adopted according to the proportion to prepare a solution B, and the solution B is prepared into a phenolic resin / sucrose-based hard carbon material; adding the solution B into the solution A according to the proportion to prepare a phenolic resin / sucrose-based hard carbon precursor solution; placing the prepared phenolic resin / sucrose-based hard carbon precursor solution in a reaction kettle for solvothermal reaction, and cleaning and drying a solvothermal reaction product to prepare a phenolic resin / sucrose-based hard carbon precursor; grinding the prepared phenolic resin / sucrose-based hard carbon precursor, carrying out pre-oxidation treatment on a grinding product, and carrying out carbonization treatment on a product subjected to the pre-oxidation treatment, so as to prepare the phenolic resin / sucrose-based hard carbon material. The phenolic resin / sucrose-based hard carbon material with stable structure and excellent electrochemical performance can be efficiently prepared at low cost.
Owner:BEIFANG UNIV OF NATITIES
NOL ring preparation tool
The utility model provides an NOL ring preparation tool. The NOL ring preparation tool comprises two tool split bodies which are connected in an inserted mode. Each tool split body comprises a transmission shaft and a winding part connected with one end of the transmission shaft, the winding part is provided with a plurality of insertion pieces which extend in the axial direction of the transmission shaft and are arranged in the circumferential direction of the transmission shaft at intervals, and an insertion groove is formed between every two adjacent insertion pieces; the two tool split bodies are connected by inserting the multiple inserting pieces into the corresponding inserting grooves to form a barrel, and the inserting pieces can be squeezed in the radial direction to be gathered towards the axis of the barrel. According to the NOL ring preparation tool, the multiple inserting pieces are connected in the corresponding inserting grooves in an inserted mode, so that the winding parts on the two tool split bodies form a barrel, winding of winding materials is facilitated, when the two tool split bodies move along the axes of the tool split bodies to be separated, the inserting pieces are extruded in the radial direction, the inserting pieces are gathered towards the axis of the barrel, and therefore the NOL ring preparation tool is formed. And the two separated winding parts can be conveniently separated from the NOL ring, so that the NOL ring can be conveniently demolded.
Owner:FTXT ENERGY TECH CO LTD
Battery pop-up device based on lateral battery replacement new energy vehicle
ActiveCN224090045Ueliminate explosioneliminate riskElectric devicesElectric propulsion mountingElectrical batteryNew energy
The utility model relates to a battery pop-up device based on a lateral battery replacement new energy vehicle, and belongs to the technical field of new energy vehicle batteries. Comprising a pop-up mechanism, the pop-up mechanism comprises a gas generator, the new energy vehicle is provided with a battery bin, one end of a bin frame of the battery bin is provided with a bin inlet and outlet, the other end of the bin frame is provided with a bin end cover, and the gas generator is arranged on the bin end cover. When the battery is inserted in place in the battery bin, a closed space can be formed between the inner end of the battery and the battery bin, and gas generated by combustion of a gas generating agent in the gas generator can act on the inner end of the battery to push the battery out of the battery bin. The gas generator is simple in structure and convenient to operate, when the battery is abnormal, the gas generator can instantly generate a large amount of gas, the battery can obtain enough kinetic energy, the battery is separated from the new energy vehicle, the risk that the battery explodes or burns on the new energy vehicle is eliminated, and therefore the personal and property safety of passengers is guaranteed.
Owner:MIT AUTOMOBILE SERVICE
A lithium supplement additive and its preparation method and application
The present application relates to the technical field of lithium ion battery additives, and provides a lithium supplement additive, which includes α-crystalline lithium nitride and / or β-crystalline lithium nitride. The lithium supplement additive provided by the present application has a high lithium ion conductivity of pure α-crystalline lithium nitride, which is conducive to the release of lithium ions, a high lithium ion migration energy barrier of pure β-crystalline lithium nitride, and a high decomposition voltage, which makes the migration of lithium ions in the battery system more stable, and the mixed crystalline lithium nitride contained has reduced activity, which can avoid the reaction with widely used N-methylpyrrolidone (NMP) and polyvinylidene fluoride (PVDF) in the homogenization process, and has good stability. Therefore, when the lithium nitride provided by the present application is used as a lithium supplement additive, the lithium nitride can supplement the lithium ions consumed by the negative electrode to form the SEI film during the first cycle of charging of the battery, so that the lithium ions in the battery system remain abundant, improve the first charging efficiency and overall electrochemical performance of the battery, and the voltage changes steadily during the charging process.
Owner:SHENZHEN DYNANONIC INNOVAZONE NEW ENERGY TECH CO LTD
Negative electrode material and preparation method thereof, negative electrode plate and sodium ion battery
ActiveCN119601645AImprove conductivityDiffusion fastMaterial nanotechnologyTungsten oxides/hydroxidesHeterojunctionChemical physics
The invention relates to the technical field of batteries, in particular to a negative electrode material and a preparation method thereof, a negative electrode plate and a sodium ion battery. The negative electrode material is prepared from WOx-W2C heterojunction nano particles and an MXene material, the MXene material has an accordion-shaped layered structure, and the WOx-W2C heterojunction nanoparticles are loaded on the surface of the MXene material and between the surface of the MXene material and the layered structure of the MXene material. The negative electrode material disclosed by the invention shows high reversible specific capacity and excellent super-long cycle stability, and the electrochemical performance of the sodium ion battery can be remarkably improved.
Owner:JIANGSU ZENIO NEW ENERGY BATTERY TECH CO LTD
Parallel chain connecting piece mechanism for installing current terminals
ActiveCN222338757URealize limitStable queuing and feedingContact member manufacturingControl engineeringControl theory
Owner:ZHEJIANG JUNLANG ELECTRIC AUTOMATION CO LTD