77results about How to "Electrical performance impact" patented technology

The invention discloses a cooling structure of an inner rotor motor. The inner rotor motor comprises a rotor shaft, a rotor section, a stator section, a front end cover and a seal cover. The cooling structure comprises a third cavity arranged between the front end cover and the seal cover, and the third cavity is used as one part of a cooling medium channel. The rotor shaft is internally provided with a heat conduction cavity, an opening of the heat conduction cavity is arranged at one side of the front end cover, and the inner part of the heat conduction cavity is provided with heat conduction media. The first end of a heat conduction rod is arranged in the heat conduction cavity and is contacted with the heat conduction media, the second end of the heat conduction rod is arranged in the third cavity and is contacted with cooling media, and the second end and the front end cover are sealed by adopting a static seal way. The rotor shaft and the heat conduction rod are sealed by adopting a dynamic seal way. The heat of the rotor section and the rotor shaft is transmitted from the first end of the heat conduction rod in the heat conduction cavity to the second end of the heat conduction rod and is dissipated through the cooling media in the third cavity. According to the cooling structure of an inner rotor motor, the good heat dissipating effects of the stator and the rotor are obtained, and meanwhile the strict requirements for insulation, seal and volume are satisfied.

The invention provides a solid insulating vacuum ring network cabinet comprising at least one wire inlet ring network cabinet and at least one wire outlet ring network cabinet, wherein the wire inlet ring network cabinet is assembled on a cabinet body by a vacuum switch unit through screws so as to form the whole wire inlet ring main unit; the wire outlet ring network cabinet is formed by assembling the vacuum switch unit and a fuse tripping interlocking device on the cabinet body through screws; a fuse cylinder component is arranged at the position in the vacuum switch unit at which a polar column assembling plug is securely sealed. The solid insulating vacuum ring network cabinet has the advantages that harmful substances are not generated during the working process; furthermore, all parts can be reclaimed after achieving the service life; and the environment-friendly requirement is adapted. All charged bodies are placed or arranged in epoxy resin; the electric performance of the ring network cabinet is not affected by external environments such as vapor, dust and the like; and the maintenance quantity is little and the service life is long. As charged bodies are all arranged inthe epoxy resin, semiconductor substance is sprayed outside the epoxy resin; and the induction voltage is grounded; therefore, even when a user contacts with the ring network cabinet, the electric shock accident does not occur, and the safety of equipment is improved.

The invention discloses a communication cavity device and a combining and distribution structure thereof. The combining and distribution structure comprises a connection piece, an impedance conversion transmission line, a resonant column and a media supporting piece. One end of the connection piece forms a public port, and the other end of the connection piece is used for being coupled with a first frequency band signal of the communication cavity device. One end of the impedance conversion transmission line is used for being connected with a second frequency band signal of the communication cavity device, the other end of the impedance conversion transmission line is connected with the connection piece, and the impedance conversion transmission line comprises at least two line sections with different impedance. The resonant column is connected with the middle of the impedance conversion transmission line in series. The media supporting piece is used for fixing the resonant column and enabling the resonant column to be insulated from a cavity of the communication cavity device. By means of the combining and distribution structure, the two frequency band signals can be well isolated to conduct combining and distribution. Further, combined with an elliptic function type low-pass filter with a specific structure, the communication cavity device can generate strong restraint out of band on the premise of guaranteeing high relative bandwidth, thereby meeting requirements of high isolation degree among communication systems.

The invention belongs to the technical field of lithium ion batteries and particularly relates to a preparation method of a winding lithium ion battery. The preparation method comprises the following steps of: coating anode paste on an anode current collector, drying and then cold pressing the anode paste, and then bending an anode plate to be V-shaped; processing an cathode plate with the same steps, placing the bent anode plate and the bent cathode plate in a crossing way, placing a diaphragm between the anode plate and the cathode plate, welding and connecting the anode plate by virtue of an anode pole ear, and welding and connecting the cathode plate by virtue of a cathode pole ear, thus obtaining a pole plate group; winding the pole plate group to form a battery cell, placing the battery cell in a packaging bag, and performing injection and formation to obtain the lithium ion battery. Compared with the prior art, the preparation method decreases the resistance of the pole plates through bending the pole plates, thus reducing ohmic polarization in a charge-discharge process, improving the consistency of the battery, and obviously reducing the gas production speed of joule heat and side reaction in the charge-discharge process so as to improve the power multiplying performance and prolong the cycle life of the lithium battery and a lithium ion battery pack.

The invention discloses a method and a system for preparing an electrode plate by a dry process, and application. The method comprises the following steps: mixing an electrode active material, a conductive agent and a dry binder to obtain a mixture; carrying out kneading treatment on the mixture through mechanical extrusion so as to carry out preliminary fibration on the dry-method binder to obtain a blocky and/or flocculent pre-fibration product; carrying out crushing treatment on the pre-fibration product so as to obtain a granular material; and carrying out roll forming on the granular material and the current collector so as to form a pole piece film on the surface of the current collector, thereby obtaining the dry electrode plate. The method is simple and feasible, required equipment is simple, the problem that the electrode active material structure is damaged in the material crushing treatment process can be effectively solved, the production efficiency is higher, amplification is easy, the method is more suitable for large-scale mass production of the dry electrode technology, development of the new energy industry is promoted, and the method has wide application prospects.

The invention provides a solar cell grid line structure, a solar cell sheet and a solar lamination module. The grid line structure comprises a plurality of sub grid lines arranged on a silicon wafer and a main grid line perpendicular to the sub grid lines. The main grid line is formed by a grid-like porous structure. When the main grid line is coated with a conductive paste, grid holes are filledwith a part of the conductive paste. Since the materials of the conductive paste and the main grid line have good electrical conductivity, when the above grid lines are sufficiently dense, the use ofa grid pattern instead of a solid pattern does not seriously affect the electrical performance of a module. The deformation of the conductive paste and the diffusion on a cell shell texture covered bysilicon nitride are limited by the grid pattern of the main grid line and are limited in the grid pattern, and thus paste overflow and bleeding are avoided.

The invention provides a tab pole piece, which comprises a coating area and an empty foil area positioned on one side of the coating area, the empty foil area comprises a cutting area and a retaining area, the retaining area is positioned between the coating area and the cutting area, the cutting area forms a plurality of tabs through cutting, the plurality of tabs are sequentially arranged in the length direction of the tab pole piece, and the ends, close to the coating area, of the plurality of tabs are connected into a whole through the reserving area; a parting line is formed at a position where the cutting area is connected with the reserving area, each tab comprises a first edge and a second edge which are opposite to each other, the first edge and the second edge intersect with the parting line, an included angle a is formed between the first edge and the parting line, the included angle a is located in the tab, and the included angle a is an acute angle. The invention also provides a wound battery.

The invention discloses an isolation method for an AlGaN/GaN HEMT device, belonging to the microelectronic technical field. The invention aims to avoid material damage in the isolation technology of the prior device by adoption of the method. The method is realized as follows: selective epitaxial growth GaN base materials are taken as the core; a spacer medium film is deposited on a sapphire or a Sic substrate at first; the spacer medium film is selectively etched according to a design mask, and areas of the medium film which are exposed out of the substrate surface are removed, namely a window area is an active area of the device and the spacer medium film is kept on the outside of the active area; growth of a GaN epitaxial layer and an AlGaN/GaN heterostructure is continued by adoption of the MOCVD technology; the AlGaN/GaN heterostructure only grows in the window area and the surface of a medium film area is only provided with GaN polycrystalline particles and AlGaN polycrystalline particles, thereby isolation of the active area is formed, namely isolation of the device and growth of the materials are completed simultaneously. The invention can be used for manufacturing high performance heterostructure devices, high-power devices and so on.

The present invention provides polymer/metal composite fibers and a preparation method thereof. The composite fibers comprise polymer fibers containing metal staple fibers, wherein the metal staple fibers are adopted as the dispersed phase and are distributed in the polymer fibers in a parallel manner along the polymer fiber axis, the polymer is a thermoplastic resin, the metal is at least one selected from a single-component metal and a metal alloy, the melting point of the metal is 20-480 DEG C and is lower than the melting point of the polymer, a volume ratio of the metal staple fibers to the polymer fibers is 0.01:100-20:100, and the volume resistivity of the composite fibers is less than or equal to 1*10<11>[omega].CM. According to the present invention, the fibers are obtained by carrying out melt blending, spinning and heating stretching on the metal and the polymer; the antistatic property, the breaking strength, and the elongation at break of the composite fibers are concurrently increased, the size is reduced, the dyeability is good, and the antistatic property is lasting; and the preparation method is simple and is easily subjected to industrialized mass production.

The invention discloses the production technology of a piezoelectric ceramic buzzing slice, and particularly discloses an adhesive for gluing the piezoelectric ceramic buzzing slice and a preparation method. The adhesive comprises the following components in parts by mass: 79 to 83 parts of EPE (Expand Aple Poly Ephylene) modified epoxy resin, 5 to 8.5 parts of 2-ethyl-4-methylimidazole, 2.5 to 5 parts of low-molecular polyamide, 1.2 to 1.8 parts of KH-550, 2.1 to 2.6 parts of KH-560 and 3 to 5 parts of nitrile rubber buna, wherein the EPE modified epoxy resin comprises the following components in parts by mass: 20 parts of epoxy resin E-51, 45 parts of epoxy resin E-42 and 35 parts of polyol glycidyl ethers. According to the adhesive, the technical defect that the existing adhesive for gluing the piezoelectric ceramic buzzing slice cannot resist the impact at the high temperature of 150 DEG C is solved. The adhesive disclosed by the invention has the advantages of capability of resisting the wave peak welding impact at the high temperature of 150 DEG C, and long service life and the like. The adhesive can realize the automatic production of the piezoelectric ceramic buzzing slice, and is safe and reliable.

The invention relates to polymer/carbon nanotube/metal composite fiber. The composite fiber comprises polymer fiber containing metal short fiber and carbon nanotube, the metal short fiber is dispersed in the polymer fiber as a dispersion phase and is in parallel distribution along the shaft of the polymer fiber; the carbon nanotube is dispersed in the polymer fiber and distributed among the metal short fiber; a metal is a low-melting-point metal, is at least one selected from single-composition metals and metal alloy, and has the melting point between 20 DEG C to 480 DEG C and lower than a polymer processing temperature; the volume ratio of the metal short fiber to the polymer fiber is 0.01:100-20:100; and the weight ratio of the carbon nanotube to the polymer is 0.1:100-30:100. By using the composite fiber, the volume resistivity is reduced, the wire fracture rate is reduced, and the surface of the fiber is smooth. The preparation method is simple, relatively low in production cost and easy for industrialized batch production.

The invention provides an embedded invisible circular polarized antenna, aiming at providing the embedded invisible circular polarized antenna with wide wave beam coverage range and coverage area, which can bear high power, receive signals in a plurality of frequency segments, receive and transmit circular polarized electromagnetic wave within wide-angle range and realize wide-angle coverage. Theembedded invisible circular polarized antenna comprises a printed circuit board (1), a cable component (10), a strip line feed network (11), a high-frequency connector (9); the cable component is composed of two feed cables (3) and two balanced current cables (4) arranged on a printed board by a 2*2 rectangular array, wherein the two feed cables are connected with the port (20) and port (21) of a3dB directional coupler (6) in the strip line feed network, an outer conductor of the two balanced current cables is connected with the copper foil on the printed board, and the high-frequency signalcurrent of an outside signal source is fed into the 3dB directional coupler by the high-frequency connector and then is distributed to the cable component, then is fed into the printed board by crossfeed sheets (2) on the feed cables (3).

The invention discloses a sulfide solid electrolyte stable to lithium, and relates to the field of solid-state batteries, and the sulfide solid electrolyte takes argyrodite sulfide solid electrolyte as a core, and the surface of the argyrodite sulfide solid electrolyte is coated with a shell layer composed of Li-P-S compounds. By adopting the technical scheme, the Li-P-S compound shell component is generally Li <3>P<S4> or Li <3-x>P<S4-y> lithium-deficient sulfur-phosphorus compound. The compound is relatively stable when being in contact with lithium metal and dry air, so that the purpose ofprotecting the inner core of the argyrodite sulfide solid electrolyte is achieved.

The invention relates to a manufacturing method of an H-level and 200-level electromagnetic wire, and the manufacturing method provided by the invention is lower in manufacturing cost, is suitable for energy conservation and emission reduction can be used for reducing the environmental pollution and ensuring the product performance to be higher. The manufacturing method comprises the following steps: adding a polyester resin into a nanometer material subjected to surface activation treatment, uniformly stirring and then delivering into an extruder hopper; the insulation resin to be in a high-temperature viscous flow state by virtue of an extruder and continuously extruding from a die sleeve port of the extruder; meanwhile, aligning and preheating a bare copper wire, enabling the aligned and preheated bare copper wire to pass through a forming die of a machine head of the extruder, and packaging the insulation resin extruded from the die sleeve onto the bare copper wire; and cooling the bare copper wire covered with the insulation resin so as to obtain the H-level and 200-level electromagnetic wire; the electromagnetic wire eliminates a gap at a joint seam of a pin hole and a rolling covered wire, thus the electrical insulation performance is improved; and meanwhile, an inorganic nanometer material with high corona resistance and high thermal conductivity is added into insulating layer, the heat resistance of the insulating layer is improved, and the heat-conduction coefficient can achieve 0.60 W/Mk.

According to the semiconductor structure and the preparation method thereof provided by the invention, after planarization, the Si substrate is etched through a dry method, so that the first height difference exists between the Si substrate and the insulating layer, residual Cu metal near the edge of the Cu column can be effectively removed through wet processing, the second height difference exists between the Cu column and the insulating layer, and the first height difference is greater than the second height difference; therefore, connection of Cu metal on the inner side and the outer side of the insulating layer can be avoided, and influence on the electrical performance of the device is effectively avoided. Furthermore, through the passivation layer, the Si substrate can be effectively covered, and a conductive channel is prevented from being formed on the Si substrate in a subsequent process, so that a good insulation effect is achieved, and the influence on the electrical performance of the device can be further avoided.

The invention discloses an integrated multi-station plate and automatic guide pin clamping device for assembling aluminum electrolytic capacitors. According to the invention, multiple groups of guidepin clamping manipulators are arranged at equal intervals in the circumferential direction at the bottom of an integrated multi-station plate, the clamping end of each guide pin clamping manipulator is located at the edge of the multi-station plate, a rubber cover is arranged below the integrated multi-station plate and located at a position perpendicular to the clamping end, and a core cladding guide pin of the small aluminum electrolytic capacitor passes through the rubber cover and then clamped and fixed by the clamping end. The device disclosed by the invention enables the multi-station plate to be molded at one time by using an integrated multi-station technology, is convenient to assembly and easy to be in place accurately, and improves the working efficiency; and the automatic accurate positioning guide pin clamping device at the bottom of the multi-station plate enables a core cladding to move stably in the assembling process, thereby greatly reducing the possibility of damaging a riveting part between an aluminum foil and a guide pin of the core cladding.