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210results about How to "Less heat production" patented technology

Intelligent control system for electromagnetic valve and method of intelligent control system

The invention discloses an intelligent control system for an electromagnetic valve and a method of the intelligent control system. The system comprises a control signal generator, a high pressure source, a constant pressure source, a negative pressure source, a switch, a signal trigger, a current detector, an oil tank, the electromagnetic valve, pressure sensors, a calculator and a signal inverter, wherein the pressure sensors at an oil inlet and a working opening of the electromagnetic valve can be used for detecting oil pressure at any time and feeding the oil pressure back to the calculator; the calculator is used for automatically calculating start current, shutoff current and the size of the constant pressure source according to the data of the electromagnetic valve tested in earlier stage; the pressure sensors and the calculator are matched with each other in use; during a control process, the intelligent control system is capable of realizing intelligent regulation according to a pressure value measured by the sensors even the working condition of the electromagnetic valve has changes, so that the electromagnetic valve has a self-adaption capability to the working condition. By adopting the high pressure source for stimulation, adopting the constant pressure source for reducing current and adopting the negative pressure source for rapid unloading, the intelligent control system is capable of effectively reducing the delay time when the electromagnetic valve is opened or closed and improving the dynamic characteristics.
Owner:ZHEJIANG UNIV

Method for degrading solid phase adsorbed state petroleum hydrocarbon in petroleum contaminated soil

The invention aims to provide a method for degrading solid phase adsorbed state petroleum hydrocarbon in petroleum contaminated soil. According to the method, the preparation concentration of a Fenton reagent is determined by detecting the concentration of petroleum hydrocarbon in the petroleum contaminated soil, different amounts of hydrogen peroxide in the Fenton reagent are fed for multiple times, and the concentration and the dosage of hydrogen peroxide at the next time are adjusted by the concentration of petroleum hydrocarbon after every addition for a certain time, wherein the concentration of hydrogen peroxide is 150mmol/L to 350mmol/L, and the feeding time of H2O2 is 3 to 6 times. According to the invention, a solid phase prepared iron catalyst is utilized to absorb high-activity hydroxide radicals adjacent to the petroleum hydrocarbon, and an absorption state petroleum hydrocarbon is directly oxidized, so that the oxidation efficiency is high; furthermore, the dose of H2O2 is greatly saved, and the use ratio of H2O2 is high; and the method for degrading solid phase adsorbed state petroleum hydrocarbon in petroleum contaminated soil is temperate in reaction condition, little in the heat production, low in degree of damage on the soil organic matters and the microbes, free from secondary pollution, and beneficial for subsequent biological repair.
Owner:XI'AN UNIVERSITY OF ARCHITECTURE AND TECHNOLOGY

New energy power batter

The invention discloses a new energy power battery. The new energy power battery comprises a battery box upper cover, a power battery module and a battery box lower casing, wherein the power battery module comprises an electric core bracket, more than two electric cores and an aluminum casing clamp plate; the electric cores are arranged in the electric core bracket, and the two outermost sides of each electric core are tightly attached to the aluminum casing clamp plate. The new energy power battery is characterized in that Lvte cotton is adhered to one surface of each electric core, and a silica gel sheet is adhered onto an electrode lug of each electric core; after the two electric cores are adhered with the Lvte cottons and the silicon rubber sheets, a heat conduction graphite sheet is adhered onto the surface, adhering with the Lvte cotton, of one electric core, a heating plate is arranged between the two electric cores, and the two side surfaces of the heating plate are respectively adhered with the Lvte cotton surfaces; a temperature sensor is connected with the heat conduction graphite sheet; a water cooling system is arranged at the exterior of the battery box lower casing, and a connecting structure of positive and negative electrode lugs of each electric core adopts laser welding or riveting type. The new energy power battery has the advantage that the water cooling heat radiating and heating functions are simultaneously realized.
Owner:JIANGXI DIBIKE

Novel ultrasonic humidifier

The invention discloses a novel ultrasonic humidifier which comprises a power circuit, an ultrasonic oscillating circuit, a pneumatic device connected with the output end of the ultrasonic oscillating circuit, an atomizing device and a water shortage detection circuit. The ultrasonic oscillating circuit comprises a main control chip, a mist amount regulating circuit, an automatic frequency regulating circuit, a power amplification circuit and a resonance circuit, wherein the mist amount regulating circuit and the automatic frequency regulating circuit are connected with the two input ends of the main control chip respectively, the power amplification circuit is connected with one output end of the main control chip, the resonance circuit is connected with the power amplification circuit and connected with the atomizing device, and the other output end of the main control chip is connected with the pneumatic device. The water shortage detection circuit detects ultrasonic waves conducted by water through an ultrasonic water level detection induction probe, ultrasonic signals enter a comparator through a peak detection circuit, the compared high-low electrical levels are transmitted to a pin 4 of the main control chip, the main control chip judges whether the water level is lower than the ultrasonic water level detection induction probe or not according to the electrical levels received by the pin 4, and thus the purpose of preventing dry burning is achieved.
Owner:潘浩斌

Secondary battery charging method

The invention provides a secondary battery charging method. The secondary battery charging method comprises the steps of carrying out battery charging at a constant charging current I1 for the charging time t1; stopping charging and performing battery standing for the standing time t2; carrying out battery discharging at a constant discharging current I2 for the discharging time t3; stopping discharging and performing battery standing for the standing time t4; 5) repeatedly executing the above steps until the battery voltage reaches the charging cut-off voltage V0; and performing battery charging at the constant voltage V0 until the battery current reaches a charging cut-off current I3. Compared with the prior art, by virtue of adoption of wide positive pulse current and narrow negative pulse current with intervals, and by introducing a standing charging mode in the positive pulse and the negative pulse, accumulation of battery polarization is lowered effectively, heat generation of the battery is reduced, temperature rise in the battery charging process is relieved, and potential safety hazard caused by battery temperature rise is prevented; and meanwhile, the charging speed is accelerated, and the battery performance and user experience are obviously improved.
Owner:NINGDE AMPEREX TECH

Manufacturing equipment and manufacturing method for electrode of power type lithium ion battery

InactiveCN102694149ANot easy to fall offSuppress and correct deformationCell electrodesSolventCurrent collector
The invention discloses manufacturing equipment and a manufacturing method for an electrode of a power type lithium ion battery. The manufacturing equipment comprises a vibration disk, a foam metal die, an electrode solid-state filler powder box and foam metal, wherein the foam metal die is arranged on the vibrating disk; the electrode solid-state filler powder box is arranged above the foam metal die; and the foam metal is arranged in the foam metal die. The foam metal with the characteristics of high electric conductivity, high thermal conductivity, large specific surface area, uniform and small through holes and the like is adopted as a current collector, and a skeleton structure of the foam metal is inserted into powdery active substances for pressurization to obtain an electrode plate with strong binding force, so that the active substances difficultly fall, the electric conductivity of the active substances of the electrode is effectively improved, internal resistance is lowered, heat produced by the battery is reduced, radiation is facilitated, and the service life of the battery is prolonged; and in addition, a solid-state active substance is used for directly filling the foam metal without an aqueous solution or a non-aqueous solvent, so that the obtained electrode plate is not required to be baked to remove the solvent, the manufacture period of the battery is shortened, energy consumption is reduced, and production cost is saved.
Owner:广州贝特缪斯能源科技有限公司

PDM (positive displacement motor) drilling tool for well drilling

The invention relates to a PDM (positive displacement motor) drilling tool for well drilling, comprising a bypass valve assembly, a motor assembly, a universal shaft assembly and a driving shaft assembly, wherein the driving shaft assembly comprises a driving shaft shell, a driving shaft and a whole floating type thrust bearing; the whole floating type thrust bearing comprises a bearing shell, a plurality of bearing moving rings and a plurality of bearing static rings; a shaft sleeve is arranged between every two bearing moving rings; the bearing moving rings and the bearing static rings are all fastened and sleeve the driving shaft; two bearing static rings sleeve each shaft sleeve at intervals; an annular flange is formed on the inner wall of the bearing shell positioned between every two bearing static rings; a shock-absorption energy storage body is respectively arranged between the annular flange and every two bearing static rings; a plurality of long slots are formed in the lateral wall of each bearing static ring along the axial direction of the bearing shell; a bolt is connected with the position, corresponding to each long slot, of the bearing shell; the end part of each bolt extends into the corresponding long slot; each bearing static ring is matched with the corresponding bearing moving ring through two diamond compacts; one diamond compact is arranged on the corresponding bearing static ring; the other diamond compact is arranged on the corresponding bearing moving ring.
Owner:CHINA NAT OFFSHORE OIL CORP +1

Positive electrode and preparation method and application thereof

The invention relates to the technical field of power lithium ion battery cathode materials, and discloses a positive electrode and a preparation method and application thereof. The positive electrodecomprises a current collector, at least two layers of coatings and conductive layers, wherein the two sides of the current collector are sequentially coated with the coatings respectively, and the conductive layers are arranged between the adjacent coatings. Each coating contains a positive electrode active material, a first conductive agent, an optional second conductive agent and a binder, andthe weight ratio of the positive electrode active material to the first conductive agent to the second conductive agent to the binder is (85-97):(0.5-5):(0-5):(1-5); in the direction away from the current collector, in the adjacent coatings, the total content of the first conductive agent and the second conductive agent is sequentially decreased progressively, and the decreasing amount is not smaller than 10% of the total amount of the conductive agents; or the compaction densities of the adjacent coatings are sequentially decreased progressively, and the decreasing amount is not smaller than2%. The positive electrode can improve the bonding force and conductivity between coatings, can improve the electron transmission efficiency, can reduce the internal resistance of the electrode and the battery, can reduce the heat production of the battery and can further reduce the cost of the battery.
Owner:SVOLT ENERGY TECHNOLOGY CO LTD

High-safety composite diaphragm and preparation method thereof

The invention discloses a high-safety composite diaphragm. The diaphragm comprises a commercial diaphragm, wherein the single-side or double-side surface of the commercial diaphragm is coated with atleast one functional material layer; the commercial diaphragm is used for bearing and fixing the functional material layer; the functional material layer comprises a high-thermal-conductivity material, a conductive agent, a lithium ion conductive material, a binder and a dispersing agent. In addition, the invention also discloses a preparation method of the high-safety composite diaphragm. The method comprises the following steps: 1, uniformly mixing the high-thermal-conductivity material, the conductive agent, the lithium ion conductive material, the binder, the dispersing agent and the solvent to obtain functional material layer slurry; 2, performing single-sided or double-sided coating on the commercial diaphragm by using the functional material layer slurry in a micro-gravure coating mode to obtain a composite diaphragm; 3, sequentially carrying out drying treatment, heat setting and rolling operation on the composite diaphragm. Starting from two aspects of heat generation and heatconduction, heat accumulation caused by short circuit in the battery can be effectively inhibited, and thermal runaway is avoided.
Owner:TIANJIN LISHEN BATTERY

Electric driving wheel system

The invention discloses an electric driving wheel system which comprises a source power assembly, a power adjusting assembly and a power coupling transmission assembly. The source power assembly comprises a main motor set and an auxiliary motor. The auxiliary motor is connected with the power adjusting assembly. The power adjusting assembly is connected with the power coupling assembly. The main motor set is connected with the power coupling assembly. The source power assembly is used for producing and transferring power. The power adjusting assembly is used for adjusting the power transferred by the auxiliary motor to be matched with the power of the main motor through the conversion between the solid state and the liquid state of magnetorheological fluid and transferring the power to the power coupling transmission assembly. The power coupling assembly is used for decreasing the speed and increasing the torque of the transferred power and then outputting the power. According to the electric driving wheel system, a traditional design mode is changed, high-transmission-ratio transmission of a single motor is replaced by coupling power provided by multiple motors, mechanical heat production is reduced, the operation reliability is improved, and the economical efficiency of the electric driving wheel is effectively improved.
Owner:BEIJING INST OF SPACE LAUNCH TECH +2

Motor and controller integrated system

The invention discloses a motor and controller integrated system. The motor and controller integrated system comprises a shell, a first end cover, a motor body, a controller body and heat dissipationcomponents. The first end cover is arranged in the shell. An inner cavity of the shell is divided into a first cavity and a second cavity with the first end cover as the boundary. The first end coveris internally provided with first heat dissipation channels. The motor body is arranged in the first cavity. The controller body is arranged in the second cavity. The integrated system is provided with capacitance assemblies and power conversion assemblies, wherein the capacitance assemblies and the power conversion assemblies are sequentially arranged in a superposed manner from the direction away from the first end cover to the direction close to the first end cover and electrically connected. All the capacitance assemblies are located on the same layer. All the power conversion assemblies are located on the same layer. The heat dissipation components are arranged between the capacitance assemblies and the power conversion assemblies in a clamped manner and provided with second heat dissipation channels. Direct heat dissipation is conducted on the capacitance assemblies and the power conversion assemblies; indirect conduction conducted through other electronic elements is not needed;the heat dissipation effect achieved among the assemblies is particularly good; and high stability of the outputable power of the motor and controller integrated system is guaranteed.
Owner:INST OF ELECTRICAL ENG CHINESE ACAD OF SCI
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