31results about How to "Uniform flux" patented technology

A motor including a stator and a rotor is disclosed. The rotor includes a first unit and a second unit. The first unit includes an N-pole first magnet and an S-pole second magnet. The first and the second magnets are alternately arranged along a circumferential direction of the rotor at equal angular intervals to form magnetic pole portions. The second unit includes an N-pole or S-pole third magnet and a salient pole arranged in the rotor core. The salient pole functions as a magnetic pole that differs from the third magnet. The third magnet and the salient pole are alternately arranged along the circumferential direction of the rotor to form magnetic pole portions. The number of magnetic pole portions of the second unit is the same as the number of magnetic pole portions of the first unit. The third magnet and the magnet of the first unit having the same pole as the third magnet are aligned in the axial direction of the rotor.

The invention discloses a self-adaptive magnetic-conducting slot wedge, which is installed at slot opening on a stator / rotor of a motor, and suitable for being treated by a VPI (vacuum pressure impregnation) technical process. The self-adaptive magnetic-conducting slot wedge comprises a magnetic-conducting layer and two layers of second expandable felts with an expansion action, wherein the second expandable felts are arranged at the outer side of the magnetic-conducting layer, and a first expandable felt is arranged at the outer side of each of the two layers of second expandable felts; each first expandable felt comprises a glass fibre cloth layer and a common expandable felt with an expansion action; the second expandable felts and the common expandable felts form expandable layers; and gluing layers are arranged among the various material layers. By adopting the self-adaptive magnetic-conducting slot wedge provided by the invention, the slot wedge can be closely filled in the slot opening, the bonding force between the slot openings and the slot wedge is good, and the mechanical strength is high, so that the magnetic-conducting capacity of the slot wedge is enhanced, flux in slot is uniform, the loss of the motor is reduced, and the efficiency of the motor is increased.

A filter plate for filtration (100) of a fluid as subject of the present invention comprises a first filter membrane (110) and a second filter membrane (120). The filter membranes are substantially planar and substantially-parallel. The filter membranes comprise metal fibers. The filter plate comprises a reinforcing means (130, 131) interposed between the filter membranes. The first and second filter membrane are attached to the reinforcing means. The reinforcing means creates at least two flow channels (132) between the filter membranes for guiding a fluid towards the edge of the filter plate.

Disclosed are a system and methods for preventing dendrite growth in an electrochemical cell through the use of a protective layer. The electrochemical cell may comprise an anode, a cathode, an electrolyte, and a protective layer, wherein the protective layer is capable of producing a voltage. The voltage produced can selectively shield metal ions from certain regions of the protective layer. This shielding can result in a more uniform flux of metal ions being transferred across the electrode-electrolyte interface in subsequent electrodeposition and electrodissolution processes. As a result, an electrode with such a protective layer can exhibit improved performance and durability, including markedly lower overpotentials and largely improved metal (e.g., lithium) retention.

A motor including a stator and a rotor is disclosed. The rotor includes a first unit and a second unit. The first unit includes an N-pole first magnet and an S-pole second magnet. The first and the second magnets are alternately arranged along a circumferential direction of the rotor at equal angular intervals to form magnetic pole portions. The second unit includes an N-pole or S-pole third magnet and a salient pole arranged in the rotor core. The salient pole functions as a magnetic pole that differs from the third magnet. The third magnet and the salient pole are alternately arranged along the circumferential direction of the rotor to form magnetic pole portions. The number of magnetic pole portions of the second unit is the same as the number of magnetic pole portions of the first unit. The third magnet and the magnet of the first unit having the same pole as the third magnet are aligned in the axial direction of the rotor.

The invention relates to a silicon carbide ceramic sucker and a preparation method thereof. The silicon carbide ceramic sucker comprises a sucker body and a sucker base connected with the sucker body,the sucker base is provided with an air channel and an air exhaust connector, the sucker body is made of porous silicon carbide ceramic, and the sucker base is made of compact silicon carbide ceramic. The sucker body and the sucker base are bonded together through an organic binder or a high-temperature inorganic binder. The porous silicon carbide ceramic sucker body and the compact silicon carbide ceramic sucker base are prepared through a gel casting method, and the porous silicon carbide ceramic sucker body and the compact silicon carbide ceramic sucker base are compounded through a bonding or high-temperature sintering process to obtain the silicon carbide ceramic sucker. The ceramic sucker prepared from the silicon carbide material has the characteristics of ultrahigh planeness (up to 1 micron), difficulty in deformation, high temperature resistance, good acid and alkali corrosion resistance and the like, and can meet the high-precision use requirements of integrated circuit manufacturing equipment.

The invention relates to a solid electrolyte, and discloses a composite solid electrolyte and a preparation method thereof, and a lithium storage battery. The composite solid electrolyte comprises a negative electrode side electrolyte layer, an ion dispersion layer and a positive electrode side electrolyte layer which are sequentially attached and compressed, the negative electrode side electrolyte layer is a PEO electrolyte membrane layer, the ion dispersion layer is Li3N, the positive electrode side electrolyte layer is a polymer solid electrolyte membrane layer, so that the lithium ion conductivity of the composite electrolyte is improved, the deposition uniformity of lithium ions in the charging process is improved, the lithium dendritic crystal forming rate is low, the cycle life of the lithium metal negative electrode is prolonged, and the cycle life of solid-state lithium storage is further prolonged; and the material still has a relatively high performance retention rate aftermultiple cycles.

Alternately arrange 2m stator rings in the axial direction, where m is a natural number greater than or equal to 2 (m=2 in the embodiment), each stator ring is formed with a plurality of teeth (31b-34b) and connects the teeth to each other 2m-1 slots (41, 42, 43) are formed between 2m stator rings, and the windings (36, 37, 38) in each slot (41, 42, 43) will be accommodated in the return path The windings (36, 37, 38) in the slots (41, 42, 43) at a distance of m are connected in series so that the excitation directions are opposite, so that the phases of the magnetic flux passing through the teeth (31b-34b) of each stator ring are respectively staggered by 360 ° / 2m, it is possible to abolish the winding portion (transition portion) that does not contribute to the torque, and since the magnetic circuit of each phase is shared through the return path (31a to 34a), a thin and high-output salient pole motor can be obtained, and Since the magnetic circuit of the wave winding motor is formed, the output torque can be increased compared with the salient pole concentrated winding motor.

The invention relates to the technical field of metal material processing, in particular to a steel wire galvanizing pretreatment device which comprises a treatment tank, a mounting frame is fixedly connected to the top surface of the treatment tank, steel wire guiding mechanisms are connected to the two ends of the top surface of the treatment tank, and a rotating shaft pipe is rotationally connected into the treatment tank; the two ends of the rotating shaft pipe penetrate through the treatment tank and extend out of the treatment tank, a first driving mechanism is connected to the rotating shaft pipe, two first rotating shafts are rotatably connected to the interior of the treatment tank, and a plurality of first stirring blades are fixedly connected to the surfaces of the first rotating shafts in a circumferential array manner; by reducing the rapid temperature change of the plating assisting liquid near the rotating shaft tube, the temperature difference between the plating assisting liquid in the treatment tank and the plating assisting liquid for supplementing is effectively reduced, the rapid temperature change of the plating assisting liquid in a partial area caused by direct mixing is prevented, the influence of the temperature change of the plating assisting liquid on steel wire plating assisting is reduced, and the plating quality is improved. And the subsequent galvanization processing effect of the steel wire is ensured.

Both a crystallizer and method for the evaporative production of phenol-BPA adduct crystals are provided that achieve more uniform crystal growth while suppressing undesired crystal nucleation. The crystallizer includes a cylindrical vessel; a draft tube concentrically disposed within the cylindrical vessel such that an annular space is defined between the vessel and tube; an impeller that circulates liquid in the vessel through the draft tube and the annular space, and a plurality of nozzles mounted around an inner wall of said cylindrical vessel that introduce an evaporative coolant into the vessel. Each of the nozzles includes a discharge end disposed between about 30% and 60% of a radial extent of the annular space, and is located below an upper end of the draft tube a distance of between about 50% to 150% of the diameter of the vessel. Such a nozzle arrangement provides a consistent and uniform concentration of coolant across the surface of the boiling zone that prevents or at least reduces unwanted crystal nucleation on the inner surfaces of the vessel and promotes uniform crystal growth by providing a consistent and uniform degree of supersaturation across the annular space within the boiling zone.

The invention relates to the technical field of lithium batteries, and provides a modified planar current collector, a preparation method thereof, a lithium electrode and a lithium battery. The modified planar current collector comprises a two-dimensional planar substrate and patterned heterojunction arrays constructed on the surface of the two-dimensional planar substrate, and the patterned heterojunction arrays are uniform in shape and have lithium affinity. According to the invention, a uniformly patterned heterojunction lithium-philic region enables the electric field distribution to be more uniform, enables the lithium ion flux to be more uniform, and also improves the wettability of an electrolyte (which can be proved by a contact angle test result). According to the invention, the surface energy of the planar substrate material is adjusted, the wettability with electrolyte is enhanced, uniform and compact lithium deposition can be realized, and the overall energy density is improved. Besides, the modified planar current collector is simple to operate, can be repeated easily and is in uniform preparation; the construction of a ultrathin lithium foil is easy to realize, and the use of excessive lithium of the lithium battery is avoided.

The invention discloses a PEO-based solid electrolyte, a preparation method thereof and application of the PEO-based solid electrolyte in a solid-state lithium-sulfur battery. The polyoxyethylene-based solid electrolyte is obtained by uniformly mixing and drying the following components in parts by mass: 40-50 parts of lithium salt, 0.5-3 parts of magnesium salt, 5-20 parts of filler, 1000-1500 parts of solvent and 100 parts of PEO. According to the PEO-based solid electrolyte, bis (trifluoromethylsulfonyl) imide magnesium or magnesium perchlorate is adopted as a functional additive, so that the performance of the PEO-based solid electrolyte can be remarkably improved. The PEO-based composite solid electrolyte containing the magnesium salt additive prepared by the invention is applied to an all-solid-state lithium-sulfur battery for the first time, and shows excellent electrochemical performance.

The invention provides a composite negative electrode material for a lithium metal battery, the composite negative electrode material is composed of a negative electrode material and a buffer layer coated on the surface of the negative electrode material, and the buffer layer is prepared from slurry containing porous carbon nitride microspheres. According to the invention, porous carbon nitride microspheres are mainly coated on the surface of a negative electrode material to form an inorganic buffer layer with hierarchical pores; the buffer layer can provide a physical space for accommodating and guiding lithium deposition by means of the accumulation macropores; and meanwhile, due to the existence of abundant nanopores, the nanopores can fully interact with lithium ions, so that a better homogenization effect on lithium ion flow is realized.

The invention provides a rotor for a permanent magnet motor. The rotor for the permanent magnet motor comprises a rotating shaft, a core, a magnetic shield and a permanent magnet, wherein the rotor is integral; the rotating shaft is covered by the magnetic shield; the magnetic shield is covered by the core; the rotating shaft, the magnetic shield and the core share the same axial center; and the permanent magnet is covered by the core. The permanent magnet motor not only has the advantages of the normal motor but also is simple in structure, and has higher use ratio of a magnetic material. The core is easy to magnetize after being processed by low-carbon steel so that a magnetic flow in each grade is uniform. By designing the rotor in an integral structure and sealing the permanent magnet inside the rotor, the occurrence of breaking the permanent magnet is reduced even if no permanent magnets are broken. The rotating shaft is coated by a magnetic insulation material so that no magnetism leakage is mainly generated. In the same condition, 30-40% of magnetic steel can be saved, thereby greatly saving the cost.

The present invention provides a metal compound separator including a base film and a coating layer formed on at least one side of the base film, the coating layer including at least heat resistant particles and metal oxide particles. The invention also provides a lithium battery which comprises the metal compound diaphragm, a positive electrode and a negative electrode, and the metal compound diaphragm is positioned between the positive electrode and the negative electrode. The invention also provides a preparation method of the metal compound diaphragm. The preparation method comprises the following steps: mixing materials: mixing the heat-resistant particles, the metal oxide particles and a solvent to obtain a dispersion liquid; and drying and coating: coating at least one side of a base membrane with the dispersion liquid, and drying to obtain the metal compound diaphragm.

The invention discloses a preparation method and application of a negative electrode with a lithium / lithiated metal oxide frame composite structure. The method is as follows: 1. x , conductive carbon and PVDF are mixed and evenly coated on the current collector, and after vacuum drying, MO x Pole piece; 2. Using metal lithium sheet as negative electrode, MO x The pole piece is used as the counter electrode, the battery is assembled, the constant current discharge is performed, the cut-off voltage is controlled, and the Li y MO x Electrode frame; three, the Li y MO x The electrode frame is mixed with molten lithium to obtain a composite structure negative electrode, and a solid-state electrolyte is used to assemble an all-solid-state battery. In the present invention, the embedded transition metal oxide MO x As a carrier, Li with fast ion transport properties is formed after lithium intercalation y MO x Electrode frame, and then uniformly deposit metallic lithium inside the frame, thereby inhibiting the growth of lithium dendrites and avoiding safety accidents.

The invention discloses a stator of a high-strength electric motor, which comprises a casing, a lower base is clamped outside the bottom end of the casing, and a lower rotor disk is arranged on the inner wall of the bottom end of the lower base, and the lower rotor disk The top is provided with a stator disk, and the top outer wall of the stator disk is provided with an upper rotor disk, the middle part of the inner wall of the lower rotor disk and the upper rotor disk is connected with the same connecting shaft, and the inner wall of the housing is located on the outer wall of the stator disk. For the heat dissipation slip ring, the outer wall of the housing is equidistantly distributed with heat dissipation fins in a circular manner, and the outer wall of the housing close to the outer wall of the heat dissipation fins is equidistantly distributed with fixed penetrating rods in a circular manner. The present invention adopts six groups of coils arranged crosswise with magnetic poles to form two three-phase windings inside and outside respectively, which are connected in parallel at the input end through the terminal to reduce the working voltage of the motor, and the power loss of the motor is lower when the overall power remains unchanged.

The invention provides a multi-magnetic couple magnetorheological damper with uniform magnetic flux distribution, comprising a cylinder, a piston and a piston rod. The piston includes an even number of magnetic couple structures, and the even number of magnetic couple structures are evenly arranged circumferentially around a magnetically permeable inner ring. arranged in the hollow area of ​​the cylinder; the magnetically permeable inner ring is arranged in the inner circumferential direction of the even-numbered magnetic couple structures, and the outer circumferential direction of the even-numbered magnetic couple structures is provided with a magnetically permeable outer ring; A damping channel is set between the inner wall of the magnetically conductive outer ring and the magnetically conductive outer ring; the piston rod vertically passes through the middle hole of the magnetically conductive inner ring and is axially parallel to the cylinder, and cooperates with the magnetically conductive inner ring; the magnetically conductive outer ring is provided with There are magnetic resistance gaps arranged in the circumferential direction, and the magnetic resistance gap is set between two adjacent magnetic couple structures; the extension of each of the magnetic couple structures provided on the magnetically conductive outer ring constitutes a gradual change in cross-sectional area The extension structure to achieve uniform distribution of the magnetic flux of the damping channel. The invention realizes the uniform distribution of the magnetic force lines of the damping channel of the multi-magnetic couple magnetorheological damper.

The invention provides a nitrogen-doped hollow amorphous carbon shell material, a preparation method and application. The preparation method comprises the following steps of: slowly dripping a Tris buffer agent into a dopamine hydrochloride solution; adding a zinc oxide nanorod, performing stirring and centrifugal drying; performing annealing in an argon atmosphere to obtain a nitrogen-doped amorphous carbon shell coated zinc oxide material; performing etching with hydrochloric acid to obtain the nitrogen-doped hollow carbon shell material. The nitrogen-doped hollow amorphous carbon shell negative electrode material is of a rod-shaped hollow structure, the nucleation overpotential can be effectively reduced through the unique hollow structure and the sodium affinity of nitrogen, and the cycle performance is improved.

The invention discloses a vibrating device for a membrane component, which comprises a suspension component for suspending the membrane component, a roller component connected to the suspension component, a support component for suspending the roller component, and a driving component arranged on the support component and used for driving the suspension component to reciprocate relative to the support component, the supporting assembly comprises a guide rail used for hanging the roller assembly. The supporting assembly is arranged above the hanging assembly, and the guide rails respectively form angles with the horizontal plane and the vertical direction; when the hanging assembly reciprocates relative to the supporting assembly, the roller assembly reciprocates in the length extension direction of the guide rail. According to the vibration device for the membrane module, the membrane module can be driven to linearly reciprocate along a three-dimensional space, the structure is simple, and the equipment cost is relatively low.

The invention provides a semi-solid polymer electrolyte and a preparation method thereof, and a lithium metal battery. The preparation method of the semi-solid polymer electrolyte comprises: dissolving 4,4'-dihydroxydiphenyl sulfone in a solvent, and then adding boron Lithium hydride, the first product is obtained after the reaction; the first product and polybenzimidazole are dissolved in N,N dimethylacetamide to prepare a casting solution, and the casting solution is cast on the substrate, and then the substrate is immersed in ethyl acetate Remove N, N dimethylacetamide from the ester, and obtain a polymer electrolyte membrane after drying, and set aside; dissolve the acrylate monomer and initiator in the electrolyte to prepare a precursor; soak the polymer electrolyte membrane in the precursor In the liquid, the polymerization reaction is carried out and the semi-solid polymer electrolyte is prepared. The semi-solid polymer electrolyte of the present invention has good mechanical strength and stable electrolyte-electrode interface.

The invention provides a semi-solid polymer electrolyte and a preparation method thereof, and a lithium metal battery, the preparation method of the semi-solid polymer electrolyte comprises the following steps: dissolving 4, 4 '-dihydroxy diphenyl sulfone in a solvent, then adding lithium borohydride, and reacting to obtain a first product; dissolving the first product and polybenzimidazole in N,N-dimethylacetamide to prepare a casting solution, casting the casting solution on a substrate, immersing the substrate in ethyl acetate to remove N, N-dimethylacetamide, and drying to obtain a polymer electrolyte membrane for later use; dissolving an acrylate monomer and an initiator in the electrolyte to prepare a precursor solution; and soaking the polymer electrolyte membrane in the precursorsolution, and carrying out polymerization reaction to prepare the semi-solid polymer electrolyte. The semi-solid polymer electrolyte provided by the invention has good mechanical strength and a stableelectrolyte electrode interface.

The invention provides a multi-magnetic-couple magneto-rheological damper with uniformly distributed magnetic flux. The multi-magnetic-couple magneto-rheological damper comprises a cylinder barrel, a piston and a piston rod, wherein the piston comprises an even number of magnetic couple structures, and the even number of magnetic couple structures are evenly distributed in a hollow area of the cylinder barrel in the circumferential direction of a magnetic conductive inner ring; the magnetic conductive inner ring is arranged in the inner circumferential direction of the arrangement of the even number of magnetic couple structures, a magnetic conductive outer ring is arranged in the outer circumferential direction of the arrangement of the even number of magnetic couple structures, and a damping channel is arranged between the inner wall of the cylinder barrel and the magnetic conductive outer ring; the piston rod vertically penetrates through a middle hole of the magnetic conductive inner ring, is parallel to the axial direction of the cylinder barrel and is matched with the magnetic conductive inner ring; the magnetic conductive outer ring is provided with magnetic resistance gaps which are arranged in the circumferential direction, and the magnetic resistance gaps are arranged between the two adjacent magnetic couple structures; and the extension section, arranged on the magnetic conductive outer ring, of each magnetic couple structure forms an extension structure with the gradually-changed sectional area, so that uniform distribution of magnetic flux of the damping channel is achieved. The magnetic lines of force of the damping channel of the multi-magnetic-couple magneto-rheological damper are uniformly distributed.

The present invention relates to a solenoid valve (1) for controlling the braking pressure of a wheel brake of a slip-controllable hydraulic brake system of a motor vehicle, having a valve element (6)arranged at least partially in a valve insert (8) in a longitudinally displaceable manner and acting together with a valve seat (9.1), to which valve element, in the installed position, a force component acting in the direction of opening with respect to the valve seat (9.1) is applied by a spring device (7), wherein: the valve element can be actuated by means of an electromagnetic actuator (3) in the closing direction with respect to the valve seat (9.1); the valve element (6) is arranged between an anchor (4) and the valve seat (9.1) and is operatively connected to the anchor (4); the solenoid valve (1) is characterised in that a front face (6.4) of the valve element (6) facing the anchor (4) has at least one projection (6.3); and the projection (6.3) defines a point of contact with theanchor (4). The present invention further relates to a tool for producing the valve element (6).

A support member for an improved three-chambered electrolytic cell is disclosed. A porous synthetic support system for exchange membranes in electrolytic cells is used for exchange membrane protection in electrolytic cells for the in situ generation of electrolysis solutions, such as bleach or hypochlorous acid.

A sample loading device for high-speed neutron irradiation autorotation comprises an outer cylinder with a detachable end, wherein, a plurality of fan-shaped holes are formed on the upper and the lower end surfaces of the outer cylinder; an inner tank body is arranged in the outer cylinder; the inner tank body is a cylinder with a bottom, and a cover is arranged at the open end of the inner tank body; two ends of the inner tank body are respectively sleeved on an upper rotary cover and a lower tray; the upper rotary cover is supported on the upper end surface of the outer cylinder, whereas, the lower tray is supported at the bottom end of the outer cylinder; an impeller is fixed on the shaft lever of the upper rotary cover; and through support of the upper rotary cover and the lower tray and the rotation of the impeller, the inner tank body can rotate under the action of the water flow of the fan-shaped holes at the two ends of the outer cylinder. Through the invention, the problem that the sample high-speed neutron irradiation is transversely uneven is solved, the processing is simple, the use is convenient, and accordingly, the safe problem of the reactor is avoided; and besides, the sample loading device has no radioactivity after irradiation and can be used repeatedly.