143results about How to "Achieve large capacity" patented technology

The invention discloses a sensing system based on optical OFDM (Orthogonal Frequency Division Multiplexing) and an FBG (Fiber Bragg Grating) monitoring method thereof, relating to the field of optical fiber sensing. The sensing system comprises an adjustable optical source, an electrooptical modulator, an optical circulator, a weak reflective FBG array, a wavelength tuning control circuit, a signal generator, an optical detector and a digital decoding and control unit, wherein the adjustable optical source is used as a signal optical source; the electrooptical modulator is used for modulating data onto signal optical waves; the optical circulator is used for separating optical signals which are in an incident direction from optical signals which are in a reflective direction; the weak reflective FBG array is used as a sensing element for reflecting the optical signals to the optical circulator; the wavelength tuning control circuit is used for tuning the emitting wavelength of the adjustable optical source; the signal generator is used for generating electric signals which are encoded based on OFDM; the optical detector is used for converting the reflective optical signals into the electric signals; and the digital decoding and control unit is used for positioning an FBG sensor and acquiring variables to be detected. In the invention, by combining the FBG monitoring method based on the optical OFDM, the arrangement density and the sensing distance of FBG sensors are improved, the scanning frequency and the spatial revolution of the system are improved, and large-capacity measurement requirements are satisfied.

The invention provides a storage device sufficiently acting the advantages of the SLC-type flash memory and the MLC-type flash memory. The storage device includes: a binary flash memory that has a first storage area and a capacity of storing two values per each cell; a multivalued flash memory that has a second storage area and a capacity of storing at least three values per each cell; and a controller configured to arrange the first storage area ahead of the second storage area, logically combine the first storage area with the second storage area to form a single combined storage area, and perform data reading and data writing from and into the combined storage area. Data management information is stored in a head of the combined storage area according to a predetermined file system.

The invention relates to a multifunctional cooking machine which comprises an inner pot and a host for driving and controlling the inner pot to work, wherein the inner pot is detachably shafted with the host; the host comprises a host frame, a positioning mechanism, a driving mechanism, a pot seat, an electromagnetic heating mechanism which can heat the inner pot by regions and is close to the arc-shaped surface of the inner pot, and a control circuit; the control circuit is connected with the driving mechanism and the electromagnetic heating mechanism respectively; the driving mechanism is fixedly connected with the positioning mechanism and the pot seat respectively; the electromagnetic heating device is fixed on the positioning mechanism and is positioned between the positioning mechanism and the pot seat. A large volume is realized as much as possible through the specific structure of the inner pot; food materials with different shapes and volumes can be stir-fried; the cooking machine is convenient to clean and use, long in service life, large in heating area, quick in heating and uniform in heat transfer.

The invention provides a dielectric medium of a ceramic capacitor, which is prepared from the following raw materials in percentage by weight: 54 to 91 percent of BaTiO3, 2 to 13 percent of SrTiO3, 2 to 15 percent of BaZrO3, 0.05 to 1 percent of Nb2O5, 0.03 to 1.0 percent of CeO2, 0.1 to 1.0 percent of ZnO, 0.03 to 1.0 percent of Co2O3, and 2 to 15 percent of BaSiO3. The invention also provides apreparation method of the dielectric medium of the ceramic capacitor. The dielectric medium of the ceramic capacitor has high dielectric constant and high withstand voltage, generates no pollution tothe environment in the process of preparation and use, and can reduce the cost of the ceramic capacitor, so the dielectric medium is suitable for preparing monolithic ceramic capacitors and multilayer chip ceramic capacitors.

The invention discloses a graphene-based high-voltage pulse thin-film capacitor. The capacitor is composed of more than one dielectric layer and more than one graphene electrode layer in an alternative laminating manner. The graphene electrode layer is composed of a metalized film and a graphene film which are connected with each other. According to the graphene-based high-voltage pulse thin-film capacitor, the graphene film is added on the surface of the capacitor electrode. An excellent surface heat conduction performance of the graphene film can be utilized for quickly transferring heat of electrodes between the capacitor layers out of the electrodes of the capacitor, thereby remarkably reducing heat accumulation of the electrodes in the capacitor, realizing temperature control and heat management to the electrodes in the capacitor, reducing electric field strength loss of the capacitor caused by temperature increase, stabilizing stored energy of the pulse capacitor, and realizing small size and high capacity of the capacitor.

The invention relates to the technical field of inorganic nonmetallic materials, in particular to low-temperature-sintered giant-dielectric ceramic capacitor dielectric with the low capacitor temperature change rate.The low-temperature-sintered giant-dielectric ceramic capacitor dielectric is prepared from 88 wt%-96 wt% of CaCu3Ti4O12, 0.01 wt%-7.0 wt% of (Ba0.65Sr0.35)TiO3, 0.01 wt%-6 wt% of Bi2WO6, 0.01 wt%-0.6 wt% of Nd2O3, 0.1 wt%-4 wt% of SiO2-Li2O-B2O3 glass powder (ZLB), 0.01 wt%-0.5 wt% of BiMnO3 and 0.5 wt%-4 wt% of (Li(1 / 2)Bi(1 / 2))TiO3.The lead-free cadmium-free giant-dielectric ceramic capacitor dielectric with the low capacitor temperature change rate is prepared by adopting the ordinary chemical raw materials of capacitor ceramic, and the sintering temperature of the capacitor ceramic can be greatly lowered.

The invention discloses a dielectric medium of a ceramic capacitor and a preparation process thereof and belongs to the field of capacitor manufacturing. The dielectric medium comprises the following raw materials in parts by weight: 40-60 parts of BaTiO3, 10-20 parts of SrTiO3, 10-20 parts of BaZrO3, 8-12 parts of CaTiO3, 8-12 parts of MgNb2O5, 2-4 parts of CeO2, 2-4 parts of ZnO, 2-4 parts of Co2O3, 1-3 parts of BaSiO3 and 1-3 parts of Gd2O3. The preparation process comprises the following steps of: crushing the raw materials and uniformly mixing the raw materials; then drying the raw materials and adding an adhesive for granulation to obtain granular materials; and finally, pressing the granular materials into a raw blank sheet and sintering the same to obtain the dielectric medium. The dielectric medium of the ceramic capacitor provided by the invention is high in electric constant and high in withstand voltage, and free of environmental pollution in a using process. The invention aims to provide a preparation method of the dielectric medium of the ceramic capacitor. The preparation method is relatively low in cost and free of pollution- to the environment in the preparation process.

The present invention relates to technical field of inorganic non-metal materials, particularly to a low temperature sintering high voltage ceramic capacitor dielectric, wherein the formula of the dielectric comprises, by weight, 60-91% of BaTiO3, 1-13% of SrTiO3, 2-15% of BaZrO3, 0.05-2% of Nb2O5, 0.1-1.5% of ZnO, 0.03-2.0% of Co2O3, 0.5-6% of ZnB2O4 glass powder, and 0.5-4% of BaCu(B2O5). According to the present invention, the conventional ceramic capacitor dielectric preparation method is adopted, and ordinary capacitor ceramic chemical raw materials are utilized to prepare the lead-free and cadmium-free high dielectric high voltage ceramic capacitor dielectric so as to substantially reduce a sintering temperature of the ceramic capacitor; and the dielectric is suitable for preparation of monolithic ceramic capacitors and multi-layer ceramic capacitors, wherein a ceramic capacitor cost can be substantially reduced, a withstand voltage can be increased, an application range of the ceramic capacitor can be broadened, and no environment pollution is generated during preparation and use processes.

The invention discloses a semiconductor memory and a manufacturing method thereof. The semiconductor memory comprises at last two memory chipsets stacked successively from bottom to top, re-wiring layers of two adjacent memory chipsets are electrically connected with inter-layer conductive poles, and a re-wiring layer of the bottommost memory chipset is electrically connected with external connecting projections; and each memory chipset comprises at least two memory chips stacked successively and a composite insulating layer positioned under the memory chips, the memory chips are packed into an integrated structure, the re-wiring layer is arranged in the composite insulating layer, and intra-layer conductive poles of the memory chips are staggered from each other for a preset angle, and are electrically connected with the re-wiring layer. According to the invention, large capacity and high integrated degree of the semiconductor memory are realized, the stacking efficiency of the memory is improved effectively, and the stacking difficulty is reduced.

Disclosed is a separator for energy devices, which hardly allows an internal short circuit, while being excellent in electrolyte solution retention. Also disclosed is an energy device comprising such a separator. Specifically disclosed is a separator for energy devices, which comprises a nonwoven fabric laminate composed of two or more melt-blown nonwoven fabric layers arranged on top of one another. Each of the melt-blown nonwoven fabric layers has an average fiber diameter of 0.5-3 [mu]m, and the weight per square meter of the nonwoven fabric laminate is not more than 50 g / m. This separator for energy devices has a surface centerline maximum roughness (Rt value) of not more than 35 [mu]m.

The invention relates to the technical field of inorganic non-metal materials, and particularly discloses a low temperature coefficient crystal boundary layer ceramic capacitor medium and a preparation method thereof. The medium formula comprises the following components in percentage by weight: 88 to 96 percent of SrTiO3, 0.1 to 4 percent of LiNbO3, 0.05 to 4 percent of Dy2O3, 0.03 to 3.0 percent of SiO2-B2O3-Li2O glass powder, 0.1 to 4 percent of CuO, 0.01 to 1 percent of SiO2, and 0.03 to 2.0 percent of MnO, wherein SrTiO3, LiNbO3 and SiO2-B2O3-Li2O glass powder are respectively compounded by conventional chemical raw materials through a solid phase method. According to the invention, a conventional ceramic capacitor medium preparation method and a one-time sintering technological method are adopted, the common capacitor ceramic chemical raw material is adopted to prepare the lead-free and cadmium-free low temperature coefficient crystal boundary layer ceramic capacitor medium, the sintering temperature of capacitor ceramic can be also lowered, and the medium is applicable to the preparation of monolithic ceramic capacitors and monolayer chip ceramic capacitors.

The invention provides a dielectric material for a multilayer ceramic capacitor with medium-high voltage X7R characteristics. The dielectric material is prepared from the following components: 100mol of (Ba<1-a>Y)TiO<3>, 0.2-1.0mol of MgTiO3, 0.05-0.5mol of oxide selected from Mn, Cr, Co and Fe, 0.2-1.0mol of oxide selected from Ca, Si, Li, AL and B, 1.0-4.0mol of oxide selected from Ho, Yb, Gd, Dy, Sm and E and 0-0.3mol of oxide selected from W, Mo and V. The (Ba<1-a>Y)TiO<3> produced by a low-cost solid-phase method is taken as a main raw material, and the dielectric material with anti-reductive X7R characteristics, which is sintered at 1260-1320 DEG C, is obtained through an optimization process and a formula under the common action of various auxiliary ingredients. The dielectric material is suitable for a medium-high voltage multi-layer ceramic capacitor of which the thickness of a dielectric layer is greater than 8 microns and the rated voltage is greater than 100V, and is good in temperature stability, high in insulation resistance, high in withstand voltage and high in reliability.

The invention relates to a high-temperature stabilization ceramic capacitor dielectric composition. A conventional ceramic capacitor dielectric preparation method is adopted, and general chemical raw materials of capacitor ceramics are utilized to prepare the high-temperature stabilization ceramic capacitor dielectric without lead, cadmium and toxicity. The ceramic capacitor dielectric composition is characterized by comprising the following components in weight percent: 55-90% of BaTiO3, 2-25% of SrTiO3, 2-15% of CaTiO3, 0.5-9% of MgNb2O5, 0.1-2.5% of Bi3NbTiO3, 0.1-0.8% of Gd2O3 and 0.03-1.0% of MnCO3, wherein the BaTiO3, the SrTiO3, the CaTiO3, the MgNb2O5 and the Bi3NbTiO3 are respectively synthesized from conventional chemical raw materials through a solid phase method. The dielectric is suitable for preparing a monolithic ceramic capacitor, the volume and voltage resistance of the ceramic capacitor can be reduced, the cost of the ceramic capacitor is greatly lowered, the safety is improved, and moreover, high temperature stability is obtained; and in addition, the dielectric does not pollute the environment in preparation and use processes.

The invention discloses an optical fiber grating temperature sensor wavelength shift correction method and a temperature measuring device. Correction is conducted by a wavelength shift cubic fitting method, and the fitting formula is as follows: T=K0+K1*delta(lambda)+K2*delta(lambda<2>)+K3*delta(lambda<3>), wherein T is measured temperature, delta(lambda) is wavelength shift relative to a benchmark reflection wavelength, and K0, K1, K2 and K3 are constants and need to be actually calibrated. The temperature measuring device comprises a CPU board which is connected with an OS board; the OS board is connected with multi channels of optical fibers; each channel of optical fiber is connected in series with multiple temperature measuring gratings; the OS board is further connected with an ASE board; and the ASE board is equipped with a wavelength demodulation module and a light source. The wavelength shift cubic fitting method can help to decrease the amount of calculation of temperature fitting significantly, and is easy to implement. The temperature T is calculated out directly after delta(lambda) is detected, and the real-time performance of temperature calculation is improved. By using the wavelength shift cubic fitting method put forward by the invention, the error of an optical fiber grating at 140 DEG C can be controlled within 2 DEG C.

The invention provides a manufacturing method of a single high-capacity lithium-ion battery and pole piece coating equipment. In the method, the surface of a positive pole piece or negative pole piece is directly coated with prepared diaphragm slurry, the pole pieces are superposed after being dried, and after a battery cell is prepared, steps of encasing, liquid injecting and the like are carried out to obtain a finished product of the battery. According to the manufacturing method of the single high-capacity lithium-ion battery and pole piece coating equipment, provided by the invention, by the mode of directly coating the positive pole piece or negative pole piece with the diaphragm slurry, the problems of difficult leveling of a diaphragm, displacement, separation of lithium and the like in the process of assembling the battery are solved, thereby well ensuring the quality of the battery and realizing high capacity of the single battery.

The invention is to implement large capacity of a power conversion device without increasing size of the device. The provided power conversion device comprises: a first conductor electrode with a plate-shaped part and a vertical part, the plate-shaped part is connected with anode terminal or cathode terminal of a capacitor and roughly parallel mounted with planes setting each terminal so as to cover the capacitor group, the vertical part is connected with direct current side of the first power conversion circuit and vertical to the planes; and a second conductor electrode with a similar plate-shaped part, a part which is connected with vertical part of the first conductor electrode and vertical to the planes and a part which is connected with direct current side of the second power conversion circuit and vertical to the planes. Thus, degree of non-homogeneous of current running through each capacitor may be alleviated such that large capacity may be implemented without increasing size of the power conversion device.

The embodiment of the invention relates to a wireless communication method. The method includes the following steps: a first array of optical fibers transmit a first signal optical signal; an opticalsplitter splits the first signal optical signal to obtain multiple paths of identical first branching optical signals; multiple wireless communication nodes synchronously generate the same first pulsesignal, and thus each wireless communication node in a wireless communication array simultaneously and synchronously sends the first pulse signals; a synchronization controller generates a receivingcontrol instruction, and sends the receiving control instruction to a current wireless signal transceiver node through a first signal optical fiber and a first passive optical branching device; the current wireless signal transceiver node receives the first pulse signals simultaneously sent by the multiple wireless communication nodes in the wireless communication array to generate a first communication optical signal; and a second passive optical branching device receives the first communication optical signal sent by the corresponding wireless signal transceiver node and sends the first communication optical signal to a second signal optical fiber.

A resistance change element has a first electrode (107), a second electrode (105), and a resistance change layer (106) provided interposed between the first and second electrodes (107, 105) so as to be in contact with the first and second electrodes (107, 105) and in which a resistance value reversibly changes on the basis of an applied electrical signal. The resistance change layer (106) is constituted by a layered structure of a first resistance change layer (106b) constituted by a first oxygen-deficient metal oxide, and a second resistance change layer (106a) constituted by a second transition metal oxide in which the degree of oxygen deficiency is lower than the degree of oxygen deficiency in the first resistance change layer (106b). The second electrode (105) has just one needle-shaped section at the interface with the second resistance change layer (106a), and the second resistance change layer (106a) is provided between the first resistance change layer (106b) and the second electrode (105) so as to be in contact with the first resistance change layer (106b) and the second electrode (105) and so as to cover the needle-shaped section.

An over-head high-speed passenger train is characterized by that it is electrically powered in a relay mode, the IGBT frequency converting technique is used for its DC / AC conversion, and the 3-phase asynchronous motor is used as its power. Its speed is 400-500 Km / h.

A transmitting coil (10) and / or a receiving coil (20) are / is configured from a double-sided winding coil combination formed by combining a plurality of unitary double-sided winding coils (100, 200). From the unitary double-sided winding coils (100, 200) is selected a unitary double-sided winding coil in which the leakage flux around a moving body does not exceed a predetermined value when two unitary double-sided winding coils are placed in placement positions on the moving body, and the number of unitary double-sided winding coils to be combined in the double-sided winding coil combination is set so that the product obtained by multiplying the electrical power feed capacity of the unitary double-sided winding coils by the quantity thereof satisfies the electrical power feed capacity of the contactless electrical power feed transformer. It is possible both to reduce the leakage flux and readily increase capacity according to the number of combinations.

The invention consists of AC bridging rectifying circuit, control circuit, power synthesis circuit, LC oscillating circuit, induction heater and cooler. The power synthesis circuit comprises frequency control circuit, buffer stage, preposition driver stage, driver stage and power amplifying stage. The power synthesis circuit outputs the synthesized power to the LC oscillating circuit. The above preposition driver stage, driver stage and amplifying stage is composed of power module units. The output of each power module unit is through power synthesis and circuit synthesis, and then is outputted to LC oscillating circuit. In LC oscillating circuit, the primary coil of the high frequency hardening transformer is connected with oscillating capacitor to form parallel-resonant circuit. the secondary coil of high frequency hardening transformer is connected with induction heater.

The invention provides a single large-capacity polymer lithium-ion battery manufacturing method and an assembling method thereof. Firstly, polyester films are coated with prepared membrane slurry to prepare membranes; the membranes are respectively adhered to the surface of a cathode plate and then are pressed with the cathode plate together in a hot pressed mode, and the polyester films on the membranes are torn off after cooling; then, the cathode plate pressed with the membranes are superposed and bonded with an anode plate together to obtain a battery cell. The problem of uneven superposition caused by too thin membranes is solved by using the polyester films as intermediate substances in the assembling mode, the quality of a battery can be well ensured, and therefore the single large-capacity battery can be achieved.

The invention provides an anthracite large oxygen-enriched combustion system and a method with a novel direct blowing powder production device for realizing an anthracite high-volume (600 MW and above) tangential firing mode or a wall firing mode. When the direct blowing powder production system is adopted, the wind powder temperature of primary wind is low; and the system optimizes the wind powder airflow of the primary wind, and improves the ignition characteristic. The firing mode realizes CO2 emission reduction, radically reduces emission of nitric oxides, and meanwhile, increases the burn-off rate of coal powder.

A readout circuit (30) wherein a readout bit line (RBIT) is used as output wiring in a memory cell (100) is composed of a transistor (31) for switching, a transistor (32) for resetting and a transistor (33) for driving output wiring. The transistor (31) for switching connects a data holding node (MD) and a control line (DR) of a storage circuit (10) to each other by a control signal of the readout word line ( / RWL0). The transistor (32) for resetting resets a control line (DR) by a reset control signal (RST). The transistor (33) for driving output wiring is provided with a gate connected to the control line (DR), a drain connected to the readout bit line (RBIT), and a source connected to a ground power supply.

The invention provides a rechargeable battery. The rechargeable battery comprises a rechargeable battery cell, a steel shell, a protection IC, an integrated IC, a first resistor, a second resistor, athird resistor, a first capacitor, a second capacitor, a third capacitor, an inductor, an LED lamp, a plastic part, a circular hard FR-4 substrate, a metal cap and a curing structural adhesive. Multiple functions of constant voltage output, charging management and protection and over-charging, over-discharging and over-current protection are integrated into one body. Compared with the prior art, by using the rechargeable battery, multifunctional integration of the battery can be realized, space occupation saving of battery accessory structural parts and a high capacity of the battery can be achieved.

The invention relates to the technical field of inorganic nonmetallic materials, and especially relates to a ceramic capacitor medium with giant dielectric and small capacitance temperature change rate. The formula of the medium comprises 91-98wt% of Ca0.925Y0.05Cu3Ti4O12, 0.1-7.0wt% of (Ba0.65Sr0.35)TiO3, 0.01-1wt% of Bi2WO3, 0.1-4wt% of Ba(Yb1 / 2Nb1 / 2)O3, and 0.01-1.8wt% of Co2O3. The leadless and cadmium-free ceramic capacitor medium with giant dielectric and small capacitance temperature change rate is prepared from common chemical raw materials of capacitor ceramic, and the sintering temperature of the capacitor ceramic is also greatly reduced.

The invention relates to a liquefied oxygen transport ship, which comprises a ship body. One or more liquefied oxygen storage tanks are installed at the middle-front part of the ship body. The liquefied oxygen storage tanks are installed on the ship body through saddle supports. A wash bulkhead is installed in each liquefied oxygen storage tank. The liquefied oxygen transport ship has the advantages that the large-capacity long-distance transport of oxygen is realized, the transport efficiency is improved and the transport cost is reduced; the large-capacity transport of the oxygen along a sea or a river can be realized, and industrial and mining enterprises such as ship building and repair enterprises which are established along the sea or the river do not use a great number of transport vehicles or steel cylinders to load the oxygen; liquefied oxygen is directly unloaded into storage tanks of the industrial and mining enterprises and is intensively supplied by using pipelines and liquefied oxygen pumps, and steel cylinders can be flexibly selected and used to contain the liquefied oxygen for use in practical use.