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5452results about How to "Easy to operate and control" patented technology

Electric vehicle battery monitoring and management system and monitoring method of batteries

The invention relates to the technical field of electric vehicle safe operation, in particular to an electric vehicle battery monitoring and management system. The electric vehicle battery monitoring and management system comprises a vehicle control system body and at least one battery box. Each battery box is internally provided with multiple sets of batteries. The electric vehicle battery monitoring and management system is characterized in that each battery box is internally further provided with a battery detection unit and an action executing device; each battery detection unit comprises a data acquisition module, a CPU core processing module, a communication transmission module and an executing device control module; and each data acquisition module comprises an acquisition device for acquiring the battery module temperature, the battery voltage and current and battery module environment parameters. The invention further discloses a monitoring method of the batteries. The monitoring method of the batteries comprises the steps that the temperature, the voltage and the current of the module as well as the temperature, smoke, gas, flame and other parameters in the battery boxes are monitored; and an early warning or fire fighting signal is sent out when the performance of the batteries is suddenly changed or thermal runaway occurs. According to the electric vehicle battery monitoring and management system and the monitoring method of the batteries, the development stage of thermal runaway can be accurately judged by comprehensively analyzing and processing the various parameters inside and outside battery modules, so that the thermal runaway detection accuracy is improved.
Owner:YANTAI INNOVATIVE NEW ENERGY TECH CO LTD

Low-expansion coefficient polyvinyl chloride alloy material and manufacturing method thereof

The invention provides a low-expansion coefficient polyvinyl chloride alloy material and a manufacturing method thereof. The ingredients of raw materials of the alloy material comprise a polyvinyl chloride substrate, a heat-resistant modifier, a heat stabilizer, a lubricator, a filler and a processing agent, and the alloy material is manufactured by a melt blending technique. The processing agent and the filler in the ingredients of the raw materials of the invention are the processing agent that is subjected to modification by a new method and the filler that is subjected to organic treatment, and by means of a mechanochemical reaction, self-plastification, toughening and reinforcement of the PVC can be combined organically to improve compatibility and dispersity of the polyvinyl chloride, the filler and heat-resistant resin, thus settling the problem about the contraction between the improvement of heat expansion performance and heat resistance of the PVC, and processing performance, strength and toughness of the PVC; the polyvinyl chloride engineering plastic with low expansion coefficient, high heat resistance, high strength, high toughness, excellent aging resistance and outstanding processing performance is manufactured; the invention has extensive industrial market prospect and the manufacturing method thereof is simple in technology, convenient in operation and control, stable in quality and high in production efficiency.
Owner:SICHUAN UNIV

Tilt-rotor plane operated and propelled by thrust scull and slipstream rudder

A tilt rotor aircraft adopting a thrust tail rotor and a slipstream rudder for operation and propelling and a design of two parallel rotary wings and common pneumatic distribution comprises an airframe, wings, an empennage, a system of thrust tail rotor and slipstream rudder, an undercarriage, a power-fuel system, a transmission system, a rotary wing system, a rotary-wing nacelle and a tilt rotor system of the rotary-wing nacelle. The aircraft adopts the system of the thrust tail rotor and slipstream rudder to operate the VTOL and the pitching and drifting of the forward flight; the system comprising the thrust tail rotor, an elevator and a rudder is arranged on the empennage; a tilting wingtip appears as a small-area wing which is arranged on the outside of the rotary-wing nacelle and rotates together with the rotary-wing nacelle; the plane shape of the tilting wingtip appears as a trapezoid of leading edge sweepback and trailing edge sweepforward and the aspect ratio is 1.5 and the area of the tilting wingtip occupies about 15 to 20 percent of the whole wing area and the tilting wingtip is just integrated with the appearance of the rotary-wing nacelle and fixedly connected with a nacelle bevel gear box. The tilt rotor aircraft is a novel aircraft type with the development potential and prosperous prospect.
Owner:BEIHANG UNIV

Laser direct plate marking device for plane screen print plate and device

The invention discloses a laser direct plate marking device for a plane screen print plate and device. The device comprises a screen frame for screen printing, a screen mesh stretched on the screen frame for screen printing, wherein the bottom of the screen mesh is coated with a photosensitive material coating, an optical component arranged below the screen frame for screen printing and used for performing exposure treatment on the photosensitive material coating, a scanning trolley for driving the optical component to reciprocate on the horizontal surface, and a longitudinal moving member for driving the optical component to shuttle on the horizontal surface; and the optical component comprises a plurality of lasers arranged on the same horizontal surfaces, the plurality of lasers are arranged on the same straight line parallel to a longitudinal central line of a rectangular screen frame from front to the back. The method comprises the following steps of confirming a control parameter of a mechanical structure, confirming a control parameter of a laser, and exposure imaging. The device disclosed by the invention is reasonable in design, low in investment cost, simple for use and operation, good in use effect, and wide in application range, and can be used for finishing the print plate manufacturing process of a screen frame in different sizes.
Owner:深圳市先地图像科技有限公司 +2

Nickel-cobalt-manganese multi-doped lithium ion battery cathode material and preparation method thereof

The invention discloses a nickel-cobalt-manganese multi-doped lithium ion battery cathode material with high compacted density and a preparation method thereof, belonging to the technical field of energy materials. The preparation method of the battery cathode material comprises the following steps: preparing a nickel-cobalt-manganese multi-doped intermediate by a coprecipitation method or a chemical synthesis method; mixing the multi-doped intermediate with lithium salts; after pretreatment, adding polyvinyl alcohol to the obtained mixture; uniformly mixing the polyvinyl alcohol and the mixture and then pressing the mixture into a cake; roasting the cake at 800-950 DEG C; taking the roasted cake out and carrying out cooling, pulverization and 400 meshes of sieving on the cake; then roasting obtained powder at 700-800 DEG C, taking the powder out and carrying out cooling, pulverization and sieving on the powder to obtain the battery cathode material. Granules of the battery cathode material are non-agglomerated single-crystal grains with a grain diameter of 0.6-30 microns, a chemical formula of LiNixCoyMnzM[(1-x-y-z)]O2, a degree of compaction of 3.5-3.7g / cm<3> and a primary discharge capacity of 150-165mAh / g, thus the battery cathode material has good cycle performance and higher safety performance.
Owner:CHENGDU JINGYUAN NEW MATERIALS TECH

Method for manufacturing embedded high-conductivity printed circuit board (PCB)

The invention discloses a method for manufacturing an embedded high-conductivity printed circuit board (PCB). The method comprises the following steps of 1, providing a plurality of PCB core boards and prepregs; 2, pre-slotting on the PCB core boards and the prepregs, slotting at positions where conductive materials are to be embedded on the PCB core boards and the prepregs, and respectively forming slots, wherein the core boards and the prepregs have matched positioning holes; 3, providing the conductive materials and manufacturing conductive elements by using the conductive materials; 4, placing the conductive elements in the slots of the PCB core boards and the prepregs for laminating the conductive elements into PCB multi-layer boards which have component faces and welding faces; 5, laminating the plurality of PCB core boards and prepregs to manufacture PCB multi-layer boards and fixing the conductive elements in the slots by using resins; 6, performing degumming on the surfaces of the PCB multi-layer boards and the conductive elements; and 7, processing the PCB multi-layer boards after degumming to obtain PCB finished products. The method has the advantages of simple manufacturing flows and realization of high radiation, high-speed signal transmission and the like by embedding the conductive materials into the PCB in a laminating manner and matching the conductive materials with the thickness of the PCB.
Owner:DONGGUAN SHENGYI ELECTRONICS

Total run-out comprehensive measuring instrument

The invention relates to a total run-out comprehensive measuring instrument, comprising a base part, a head frame part, a measuring slide plate mechanism, a measuring device, an axial measuring position changing mechanism, a radial measuring position changing mechanism, a control circuit and a computer. The right and the left ends on a base are respectively provided with the head frame part and a right tip device; the measuring slide plate mechanism capable of transversely moving is mounted on the middle of the base; a measuring slide plate transmission mechanism is mounted between the measuring slide plate mechanism and the base part; a measuring device is mounted on the measuring slide plate mechanism; the axial and radial measuring position changing mechanism is arranged on the measuring device; the sensing signal output terminal of the measuring device is sequentially connected with the control circuit, the computer and a stepping motor driving circuit; and the output terminal of the stepping motor driving circuit is connected with a head frame driving motor and a slide plate driving motor. The total run-out comprehensive measuring instrument combines mechanical control, data collection and data processing into a whole, and realizes automatic data collection and processing of shaft parts through computer control automation, thereby having convenient operation and control and higher energy efficiency ratio.
Owner:UNIV OF SHANGHAI FOR SCI & TECH

Method for preparing carbon nanofiber based non-noble-metal catalyst through oxidation improved electrostatic spinning

The invention discloses a method for preparing a carbon nanofiber-based non-noble-metal catalyst through oxidation improved electrostatic spinning in the technical field of carbon nanofibers and fuel cell catalysts. The method disclosed by the invention comprises the following steps: dissolving at least one transition metal salt and polyacrylonitrile in a solvent to form a precursor solution; carrying out electrostatic spinning on the precursor solution under certain parameter conditions to obtain iron-containing polyacrylonitrile nanofibers; and heat treating the iron-containing polyacrylonitrile nanofibers in an atmosphere containing a small amount of oxidizing gas to obtain carbon nanofibers containing transition metal and nitrogen element and improved by the small amount of oxidizing gas. According to the method, the cost of the raw materials is low, the operation is convenient and controllable, the operation is easy, the surface structure of the catalyst can be regulated and controlled, and the prepared oxidation improved carbon nanofiber based non-noble-metal catalyst has good catalytic activity on oxygen reduction reaction. The whole preparation process can be combined with a traditional carbon fiber technique, and the method has a prospect that large scale and industrialization of the non-noble metal catalyst can be realized.
Owner:TSINGHUA UNIV

Wearable function-enhanced manipulator system as well as assisting fingers and control method thereof

The invention provides a wearable function-enhanced manipulator system and assisting fingers thereof. Assisting fingers adopt rope drive; force sensing is formed by using a spring connected with a driving rope; an annular electromyography acquiring array is worn on a forearm of a user and is used for estimating motion and force information of the wrist and fingers of the user, and estimating the behavior intention of the user according to the extracted position and the force information, so that a corresponding decision is made for assisting or enhancing the activity function of the fingers; a passive arm mechanism shares forces borne by the wrist and the fingers of a human body and can realize the actions of assisting and enhancing the function of the fingers under the condition that normal activities of the human body are not influenced. Meanwhile, the invention provides a control method for the manipulator system. The wearable function-enhanced manipulator system has the advantages of compact structure, light weight, good flexibility and good safety; the functions of the fingers can be enhanced to the maximum extent, and natural hands of the user are enabled to engage other tasks; the wearable function-enhanced manipulator system has better use potential in the industry, agriculture, household demand, entertainment and other aspects.
Owner:SOUTH CHINA UNIV OF TECH +2
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