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.

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.

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.

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 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 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 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).