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311results about How to "Improve structural stability" patented technology

Non-welded battery module

This invention relates to an improvement in battery packs. The present invention resides in a combination of an electric battery pack and a apparatus for making an electrical connection to the battery without involving the spot welding process. The present assembly method enables terminal blocks containing multiple battery packs joint in series having a “U-turn” configuration without external electrical connection. Any two battery packs are firmly locked together through the pressure plates (200) without being electrically connected together. The present embodiment uses two separate nickel or other conductive material plated copper sheets (113a or 113b) that are embedded between the battery cell holder (114a, 114b) and the silicone rubber pressure sheet (112a, 112b). The first end portion block of battery packs supported by an end pressure plate (300) can be connected together to the second end portion of the block battery packs by using a modified nickel or other conductive material plated copper sheet (113) that enable the two battery packs to be connected internally, thus, making the “U-turn” configuration possible. This method is one of the most cost efficient ways to connect internally, to avoid using any external wires or circuits, which eventually maintain the internal resistance of each of the battery packs.
Owner:LIEW CHUNG PENG

LiNi0.6-xCo0.2Mn0.2AlxO2-yFy positive electrode material for lithium ion cell and preparation method thereof

ActiveCN105990577AImprove structural stabilityHigh discharge specific capacityCell electrodesSecondary cellsAluminiumSpecific discharge
The invention belongs to the field of lithium ion cell and specifically relates to a LiNi0.6-xCo0.2Mn0.2AlxO2-yFy positive electrode material for the lithium ion cell and a preparation method thereof. X is more than 0 and y is less than or equal to 0.05. The positive electrode material is used for overcoming the defect of poor electrochemical performance of the Ni-Co lithium manganate ternary positive electrode material. According to the invention, a minute quantity of aluminum and fluorine are doped, so that the positive electrode material for the lithium ion cell has higher specific discharge capacity and excellent cycle performance; under a room temperature environment, when the voltage scope is 2.7-4.3V and the constant current charge-discharge multiplying power is 0.5C, the specific discharge capacity of the material at the first time can reach 187.9mAh g<-1>, and after circulation for 20 times, the specific discharge capacity still can reach 192.1mAh g1 and the capacity retention ratio reaches up to 102.2%; when the voltage scope is increased to 2.7-4.5V and the constant current charge-discharge multiplying power is 0.5C, the initial specific discharge capacity of the material can reach 225.8mAh g<-1>, and after circulation for 20 times, the specific discharge capacity still can reach 190.2mAh g<-1> and the capacity retention ratio reaches up to 84.2%. The preparation technique of the material is simple and controllable, the product purity is high, the chemical uniformity is high, the crystal quality is high, the product grain is small and the size distribution is uniform.
Owner:UNIV OF ELECTRONIC SCI & TECH OF CHINA

Graphene-based nano-pore monomolecular sensor and medium identification method thereof

The invention discloses a graphene-based nano-pore monomolecular sensor and a medium identification method thereof. In the graphene-based nano-pore monomolecular sensor, conductive single-layer or multi-layer graphene is used as a radial electrode; the graphene electrode is clamped inside an insulation layer, so the structural strength is enhanced; a nano-pore channel is formed on the insulation layer; the cathode and the anode of the radial electrode are located at both ends of the nano-pore channel in the radial direction respectively; and an axial electrode is arranged along the axial direction of the nano-pore channel. During medium identification, both ends of the nano pore are connected with a fluid pool unit, and voltage is exerted between the axial electrode and the radial electrode respectively; and when a medium passes through the nano pore, the medium in the channel is identified by measuring weak change of axial and radial current. The sensor has a simple structure; meanwhile, by comprehensive analysis of the radial current and the axial current, higher sensitivity and identification rate can be obtained; moreover, due to analysis, the pore-passing medium can be detected and the pore-passing state is analyzed according to the tested medium; therefore, the property of the medium can be analyzed.
Owner:SOUTHEAST UNIV

Composite material with silicon monoxide coated with nitrogen doping carbon material and preparation method thereof

The invention discloses a composite material with silicon monoxide coated with a nitrogen doping carbon material. The silicon monoxide is used as a core; the nitrogen doping carbon material is used for coating the silicon monoxide to form a shell-core structure, wherein the nitrogen doping carbon material is a mixture of nitrogen doping graphene and nitrogen doping oxidized asphalt. The composite material with the silicon monoxide coated with the nitrogen doping carbon material is prepared from the following ingredients in percentage by weight: 70 to 90 percent of silicon monoxide, 5 to 20 percent of nitrogen doping graphene and 3 to 15 percent of nitrogen doping oxidized asphalt. The invention also discloses a preparation method of the composite material with silicon monoxide coated with the nitrogen doping carbon material. The silicon monoxide is used as the core; the nitrogen doping carbon material is used for coating the silicon monoxide to form the shell-core structure; the electron conductivity of a negative electrode material is improved; meanwhile, the volume change of the negative electrode material in the lithium embedding removal process can be buffered; the structure stability of the material in the circulation process is improved; the advantages of high reversible volume and good circulation performance are realized.
Owner:HEFEI GUOXUAN HIGH TECH POWER ENERGY

High-nickel positive electrode material for non-aqueous electrolyte secondary battery and preparation method for high-nickel positive electrode material

The invention discloses a high-nickel positive electrode material for a non-aqueous electrolyte secondary battery and a preparation method for the high-nickel positive electrode material. The high-nickel positive electrode material is represented by a general formula: Li<w>Ni<1-x-y>Co<x>Mn<y>M<z>O<2>, wherein an average particle diameter D50 is 8-15 [mu]m, and is formed by the small particle sizeD50 of 2-5 [mu]m and the small particle size D50 of 8-18 [mu]m, the Co content (metal molar ratio, SC) of the small particle diameter is higher than the Co content (metal molar ratio, LC) of the largeparticle diameter, and the Co concentration ratio (SC/LC) is preferably from the range of 1.2-2. According to the invention, the material structure of the high-nickel positive electrode material is stabilized through element doping and coating, and the crystal structure of the material is stabilized by increasing the cobalt content in the small particle size, and the cycle performance of the material is improved; and finally, the small particle size and the large particle size are mixed according to different proportions, so that the tap density of the positive electrode material and the compaction density of a pole piece are improved.
Owner:郑州中科新兴产业技术研究院 +1

Steel latticed column combined-type tower crane infrastructure in foundation pit and construction method

The invention discloses a steel latticed column combined-type tower crane infrastructure in a foundation pit. The steel latticed column combined-type tower crane infrastructure comprises the foundation pit and cast-in-place piles prefabricated at the bottom of the foundation pit, wherein the cast-in-place piles are sequentially connected with steel latticed columns, steel columns, bearing platforms and tower crane pre-embedded joint foundations from bottom to top, concrete core columns are arranged in the steel latticed columns, multiple in-pile longitudinal ribs forming a steel bar cage are arranged in the cast-in-place piles, the steel latticed columns are welded and fixed to the steel bar cage in the cast-in-place piles, detachable holding hoops are fastened to the sections, welded with the steel latticed columns, of the cast-in-place piles and are fixed through holding hoop bolts, the problems of large tower crane foundation construction difficulty and the like are solved by utilizing the characteristics of light weight, small material consumption, convenient construction operation and the like of an assembled hollow zigzag bearing platform, and the steel latticed column combined-type tower crane infrastructure has better technical and economic benefits. The sections, connected with a steel latticework, of the piles are reinforced by adopting post-mounted detachable holding hoops, and the structural stability is increased. The prefabricated concrete core columns are post-mounted in the steel latticed columns to increase rigidity.
Owner:四川路桥盛通建筑工程有限公司

Mesoporous and microporous MFI type nano molecular sieve with flaky pastry-shaped morphology and preparation method and application thereof

InactiveCN108002402AImprove structural stabilityPrevent structural collapseMolecular sieve catalystsNanotechnologyIon exchangeQuaternary ammonium surfactant
The invention belongs to the technical field of catalyst preparation, and particularly relates to a mesoporous and microporous MFI type nano molecular sieve with flaky pastry-shaped morphology and a preparation method and application thereof. The specific synthesis method is as follows: silicon source, aluminium source, mesoporous template, microporous template and water are mixed according to a proportion, the mixture is put into a reaction kettle and crystallized, the crystallized product is washed, dried and roasted and undergoes ion exchange, and thereby the mesoporous and microporous MFItype nano molecular sieve is obtained. The invention adopts Bola type tetra-head-group quaternary ammonium surfactant as the mesoporous template and tetrapropylammonium hydroxide as the microporous template, the guiding microporous structure can be assumed as a column, preventing the structural collapse of the roasted molecular sieve, consequently, the structural stability of the molecular sieve is remarkably enhanced, and the degree of crystallinity is high; the introduction of mesopores shortens the delivery path of micropores within unit volume, and decreases the mass transfer resistance ofmacromolecular catalytic reaction; and moreover, when applied in alkylation reaction (such as the heterogeneous reaction between sym-trimethylbenzene and phenylcarbinol), the mesoporous and microporous MFI type nanoscale molecular sieve has a good catalytic effect.
Owner:NORTHWEST UNIV +1

Two-dimensional reticular hairline nanometer fiber material used for air filtration and preparation method of material

The invention provides a two-dimensional reticular hairline nanometer fiber material used for air filtration and a preparation method of the material. The preparation method is characterized in that a high-molecular-weight polymer is selected, a polymer solution low in mass concentration is prepared, then in the electrostatic spraying process, a spinning nozzle is vibrated in situ by using external force, and the generation of charged droplets is promoted; meanwhile, by regulating the vapor concentration of a solvent in a closed spinning environment, the droplets form the two-dimensional reticular hairline nanometer fiber air filtration material on the surface of a receiving substrate after phase separation, wherein a punctiform adhesion structure is formed between the material and the substrate. The material is continuously and seamlessly stacked, the average diameter of the fibers in the net is 3-50 nm, meshes have a stable Steiner minimal-tree structure, the average mesh diameter is 10-500 nm, the porosity is equal to or larger than 75%, the filtering efficiency of the material to the particulate matter with the partical size of 0.01-5 micrometers is larger than 99.999%, and the resistance pressure drop is smaller than 50 Pa. the preparation process is simple, few materials are limited, and the reticular hairline nanometer fiber air filtration material has a tiny mesh structure and good channel connectivity, and shows a great application prospect in the field of air filtration.
Owner:DONGHUA UNIV

Anti-seismic type stereoscopic underground parking garage

ActiveCN105839965AImprove structural stabilityImprove the anti-seismic functionBulkheads/pilesParkingsTraction systemStructural stability
The invention relates to an anti-seismic type stereoscopic underground parking garage. The anti-seismic type stereoscopic underground parking garage comprises a garage entering and exiting safety room, a multilayered stereoscopic parking space and a car parking and getting execution system, wherein the car parking and getting execution system is composed of a hoisting system, a rotary platform and a car transportation device; the car transportation device is movably arranged on the rotary platform; the multilayered stereoscopic parking space is composed of a steel-structured framework; each layer of space is provided with a plurality of parking stalls; the steel-structured framework is externally provided with a continuous anti-seismic wall formed by a static-pressure planting pile; the hoisting system is a machine-room-free traction system; the car transportation device comprises a driving device, a clamping wheel device and a combing tooth device. The continuous anti-seismic wall is formed by setting the static-pressure planting pile, so that the structural stability and the anti-seismic function of the underground parking garage can be extremely improved; temporary setting is not needed in a construction process, no vibration and no noises are caused, bad influences on the environments are not caused and a construction speed is rapid; a car fixing manner combining the double-drive car transportation device, combing teeth and clamping wheel mechanisms is adopted, so that the car parking and getting efficiency and the action accuracy can be greatly improved.
Owner:ANSHAN ZIZHU ENG EQUIP MFG

Battery replacing robot

The invention provides a battery replacing robot. The battery replacing robot comprises a hanging bracket, a moving bracket and a pickup part; the moving bracket is movably arranged on the hanging bracket in the first horizontal direction and penetrates through the hanging bracket in the second horizontal direction, and a preset angle is formed between the first horizontal direction and the second horizontal direction; and the pickup part is movably hung on the moving bracket in the second horizontal direction, and comprises a lifting appliance, and the height of the lifting appliance is adjustable. According to the battery replacing robot, a battery box to be replaced only needs to be lifted by a certain height and moves in the width direction of an electric vehicle with the battery box to be replaced, the situation that in the prior art, the bottom of the battery box needs to be higher than the electric vehicle for rotary battery replacing is avoided, and therefore the overall height of the battery replacing robot is reduced, and the occupied space is smaller; and meanwhile, the pickup part is arranged on the moving bracket, and the moving bracket is movably embedded in a portal frame, so that the weight of the battery box in the moving process is borne by the moving bracket and the hanging bracket at the same time, better rigidity is achieved, and the structural stability is higher.
Owner:宜宾科易换电科技有限公司

Soil-reinforcement component used for ecological restoration of steep rock slopes

The invention relates to a soil-reinforcement component used for ecological restoration of steep rock slopes. The soil-reinforcement component comprises an irrigation system, soil-reinforcement bricksand a cover plate that are arranged from bottom to top along a slope, wherein first and second grooves of two adjacent soil-reinforcement bricks correspond to each other to form first cavities and second cavities that are fixed on the slope through anchoring assemblies; in the irrigation system, water collection troughs are arranged on the flat bottom on the top of the slope or the flat bottom onthe bottom of the slope, a water pipe is arranged in the first cavities, and a water pump provides power to perform underground infiltration irrigation for the slope vegetation; planting holes are distributed in the surface of the cover plate, and pins are arranged perpendicular to the surface of the cover plate and correspondingly inserted into second through holes to fix the cover plate above the slope. The invention seals a certain amount of soil on the surface of the rock slope through the soil-reinforcement bricks. The first cavities on the soil-reinforcement bricks are combined with theirrigation system, and the second cavities are combined with the cover plate, which realizes the expansion of soil space on the surface of the rock slope, and can accommodate the growth of more kindsof plants. The invention has the advantages of a flexible structure and strong adaptability.
Owner:深圳园林股份有限公司
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