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590results about How to "Reduce short circuit" patented technology

Internal short-circuit detection method of power battery

The invention discloses an internal short-circuit detection method of a power battery. The internal short-circuit detection method comprises the following steps: detecting whether lowest voltage of the battery is lower than the set value and lasts for the preset time or not when a vehicle runs again or is charged, if so, judging the existence of short circuit, and performing maintenance operation on the battery through a prompt of a BMS (battery management system); identifying the difference of the battery in the static state through the BMS when the battery is arranged at the discharge tail end, if the difference in the capacity of the battery is too great, exceeds the set value and lasts for the preset time, judging the existence of the short circuit in the battery, emitting an alarm through the BMS and reminding of performing the maintenance operation on the battery; and recording the number of times of achieving cutoff voltage of the battery in the BMS, when the difference in the number of times of charge cutoff or discharge cutoff of the battery is larger than the set value, judging the existence of the short circuit in the battery, emitting the alarm through the BMS and reminding of performing the maintenance operation on the battery. According to the internal short-circuit detection method disclosed by the invention, the internal short circuit of the battery can be identified through a variety of means, and the internal short-circuit situation of the battery can be identified to the greatest extent by combining with a statistical method on the basis of long-term operation data.
Owner:HUIZHOU EPOWER ELECTRONICS

Oil-water separating device and method

The invention discloses oil-water separating device and method. The oil-water separating device comprises a swirler and a horizontal type agglutinating oil-water separator, wherein a bottom flow pipe of the swirler is in a U shape; the horizontal type agglutinating oil-water separator has the liquid uniform distributing function; an inlet liquid distributor, a rectifying sieve plate, a stainless steel plate ripple filler, a polypropylene gauze ripple filler, an outlet liquid collector, and the like are sequentially arranged in the horizontal type agglutinating oil-water separator, and the stainless steel plate ripple filler and the polypropylene gauze ripple filler are fixed by a limit grid plate; the U-shaped bottom flow pipe of the swirler and a filter screen arranged in the swirler can filter a small number of solid impurities contained in liquid so as to prevent the blockage of agglutinated fillers; the inlet liquid distributor and the outlet liquid collector ensure that the liquid is uniformly distributed; the rectifying sieve plate reduces the flow rate of the liquid to form lamellar flow; the stainless steel plate ripple filler provides a place for agglutinating and separating oil drops; and the polypropylene gauze ripple filler with an air floating device can further agglutinate and separate residual fine oil drops. The combination simultaneously has the effects of whirl, agglutination and air floatation and can realize the deep separation of oil and water.
Owner:TIANJIN UNIV

Manufacturing process of smooth roughened electrolytic copper foil

ActiveCN102277605AShort brass teethStrong impedance controlAnodisationFine lineProduction line
The invention relates to a process for manufacturing smooth surface roughened electrolytic copper foil, which comprises a step of pickling, a step of primary smooth surface roughening, a step of secondary smooth surface roughening, a step of primary smooth surface curing, a step of secondary smooth surface curing, a step of double-size anti-oxidization treatment, a step of double side passivation and a step of smooth surface coupling agent treatment, which are accomplished continuously on the same production line. Compared with the prior art, the smooth surface roughened electric copper foil manufactured by the process for manufacturing the smooth surface roughened electrolytic copper foil has the advantages of short copper teeth, easy etching, and high impedance controllability. When the copper foil is used in production of downstream products, the needs of blackening micro corrosion and toughening treatment are obviated, so the manufacturing process is shortened, and the short circuit rate and open circuit rate are lowered; meanwhile, the copper foil manufactured by the process has the same quality as the conventional high-precision or double-side toughened electrolytic copper foil, is produced at low cost and is more suitable for manufacturing the inner layers of high-precision multilayer plates and high-density fine line printed circuit boards (PCBs).
Owner:合肥铜冠电子铜箔有限公司

Mobile terminal and USB interface mode control method and device thereof

The invention relates to the technical field of mobile terminals, and provides a mobile terminal, and a USB interface mode control method and device thereof. The mode control method comprises the following steps: judging whether an identifying switch switching on control signal is received or not; if the identifying switch switching on control signal is not received, keeping the identification pin of a USB interface in a non-electrified state; if the identifying switch switching on control signal is received, actuating the operation of electrifying the identification pin of the USB interface, and judging whether the identification pin inputs low electric potential or not; if the identification pin inputs low electric potential, actuating the operation of indentifying the access of OTB equipment and communication with the OTB equipment; if the identification pin inputs no low electric potential, controlling the electrifying state of the data pin of the USB interface according to the state of the power supply pin of the USB interface, and setting the state of the USB interface of the mobile terminal to ensure that the identification pin and the data pin of the USB interface are in non-electrified states. An interface power supply is shut off to reduce the corrosion degree of the USB interface, so that short circuit phenomena caused by highly corrosion on the pins of the USB interface are reduced.
Owner:GUANGDONG OPPO MOBILE TELECOMM CORP LTD

Method for eliminating flow field vortexes in tubular electrode electrolytic machining interval

The invention provides a method for eliminating flow field vortexes in a tubular electrode electrolytic machining interval. The method comprises the following steps that the lateral face of a tubular electrode is punched through a laser punching process; the punched tubular electrode is subjected to corresponding insulating treatment; electrolyte flows downwards in the tubular electrode during electrolytic machining and is sprayed outwards from an outlet in the lower end of the tubular electrode; the electrolyte beam sprayed out of the outlet of the tubular electrode impacts an electrolytic machining area; part of electrolyte is sprayed out of a hole in the lateral face of the tubular electrode; under the impact and disturbance function of the electrolyte sprayed out of the hole in the lateral face, a vortex area of the electrolyte of the machining area is eliminated, and electrolysate is discharged out of the machining area in time in the circular flowing of the electrolyte; and meanwhile, under the function of reactive force when the electrolyte impacts, the amplitude of vibration of the tubular electrode caused by flowing of the electrolyte is reduced. The occurrence of short circuit in the machining process can be effectively reduced by eliminating the electrolysate discharged out of the vortex area and reducing the amplitude of vibration of the tubular electrode, and the process stability of the electrolytic machining of the tubular electrode is improved.
Owner:SHANDONG UNIV OF TECH

Composite film with high-temperature resistance layer, preparation method thereof and battery

The application relates to the field of lithium batteries, and particularly discloses a composite film with a high-temperature resistance layer, a preparation method thereof and a battery. The composite film disclosed by the application comprises a base film and the high-temperature resistance layer, wherein the base film is a porous thermoplastic resin film; the high-temperature resistance layer is an inorganic ceramic layer containing ceramic particles; the inorganic ceramic layer is fixed on at least one surface of the porous thermoplastic resin film by polymerization; and the peel strength of the porous thermoplastic resin film and the inorganic ceramic layer is larger than or equal to 25 N / m under the condition of 180 DEG C. The invention further discloses the preparation method and the application of the composite film and the battery adopting the composite film. According to the application, the peel strength of inorganic ceramic layer and the porous thermoplastic resin film is greatly improved so as to effectively avoid a powder falling phenomenon of the inorganic ceramic particles in the composite film. Meanwhile, the composite film has excellent high temperature resistance performance, and can reduce battery short circuit phenomena caused by heat shrinkage of the composite film in the application.
Owner:SHENZHEN ZHONGXING NEW MATERIAL TECH CO LTD

Wall socket

The invention discloses a wall socket which comprises an insulating socket shell and a panel, wherein the socket shell is internally provided with at least one independent insertion chamber unit, the insertion chamber unit is provided with a plurality of mutually isolated insertion chambers, the panel is provided with at least one jack group with a plurality of jacks, the insertion chamber unit and the jack group are in one-to-one correspondence, the insertion chambers of each of the insertion chamber units and the jacks of the corresponding jack group are in one-to-one correspondence, the insertion chambers of each of the insertion chamber units at least comprise a live line insertion chamber used for connecting a live line and a zero line insertion chamber used for connecting a zero line, and the bottom surfaces of the live line insertion chamber and the zero line insertion chamber are provided with drain holes which penetrate through the insertion chamber unit and are used for draining water, thereby being capable of preventing water or other conductive liquid from getting into the insertion chamber unit from jacks in the panel to cause short circuit. In addition, water in the insertion chamber can be drained timely through the drain holes, thereby further reducing the probability of short circuit and preventing an electric shock accident caused by being contacted with a wall socket with water, and effectively improving the safety of the wall socket.
Owner:SHENZHEN ZHENGKE ELECTRICAL TECH

Integral type organic waste gas treatment device

The invention discloses an integral type organic waste gas treatment device which comprises a shell, wherein an air inlet is formed in a side surface of the shell; an air outlet is formed in the upperend surface or the lower end surface of the shell; a rotating main shaft extending outside from inside is arranged inside the shell; a speed reduction motor is arranged at an end part, outside the shell, of the rotating main shaft; a first filtering cylinder, a second filtering cylinder and a third filtering cylinder are sequentially arranged inside the shell in a layer to layer manner; a plurality plasma bodies and ultraviolet lamp tubes which are distributed at annular intervals are arranged between the first filtering cylinder and the second filtering cylinder; an activated carbon layer isarranged between the second filtering cylinder and the third filtering cylinder; the upper end and the lower end of the first filtering cylinder are respectively connected with the interior of the shell; an upper sealing end cover and a lower sealing end cover are respectively arranged at two ends of the second filtering cylinder and the third filtering cylinder; the rotating main shaft penetrates through the shell, the upper end cover and the lower end cover. The integral type organic waste gas treatment device has the effects of being high in waste gas treatment efficiency, thorough in waste gas treatment, low in energy consumption and long in service life.
Owner:张世红

LED (Light Emitting Diode) headlamp for motor vehicle

ActiveCN102878512AThere will be no mutual occlusion problemNo dazzlePoint-like light sourceLight fasteningsLight beamEngineering
The invention relates to an LED (Light Emitting Diode) headlamp for a motor vehicle. The LED headlamp for the motor vehicle overcomes the defects that in the prior art, beams between a dipped headlight and a headlight on full beam in the vehicle shelter from each other, the most brilliant central light emitting point of the LED lamps light directly forward to cause dazzle, the brightness of beams lighting forward is nonuniform, and a reflector has a light receiving dead angle and the like. The key points of the technical scheme are that the LED headlamp for the motor vehicle comprises a lamp cup body, a reflector, a transmitting lens, LED lamps, an LED driving circuit board and a radiator assembled and matched correspondingly. The LED headlamp for the motor vehicle is characterized in that the inner cavity of the lamp cup body is divided into an upper part and a lower part separated by a partition board in a horizontal state. A dipped headlight reflector is arranged on the inner wall face on the upper part, and the lower part is divided into a left part and a right part by a partition board. Headlights on full beam are respectively arranged on the inner wall faces of the left and right parts. LED lamps are respectively arranged on the partition boards in the upper, left and right parts. The directions of the central light emitting points of the LED lamps are vertical to the partition boards and the LED lamps directly light the dipped headlight reflector or the reflector of the headlight on full beam, respectively.
Owner:GUANGDONG QIGUANG VEHICLE LIGHT IND

Multi-axis linkage ultrasonic modulation micro-electrochemical machining system

A multi-axis linkage ultrasonic modulation micro-electrochemical machining system comprises an ultrasonic vibration system, an ultrasonic synchronization system, an electrochemical machining power supply system, a multi-axis machine tool control system, a working liquid circulating system, a machining positioning and gap detection system and an online parameter observation and control system. A transverse and longitudinal excitation device is additionally arranged on the joint of an amplitude-change pole, and a machine tool can machine a complex three-dimensional curve or special-shaped hole groove; a machine tool working table is a multi-axis linkage control feeding mechanism, the micro feeding movement of the multi-dimensional space of the working table is achieved, and it is ensured that the machining process is stable; an encoder and a micro displacement sensor are additionally arranged on a machine tool feeding mechanism, and therefore machining gap control and workpiece precise positioning feeding movement can be facilitated; in the machining process, parameter changes can be online observed in real time, preparing and conveying of needed work liquid can be completed by controlling a working liquid delivery device; and workpiece and tool electrode protection can be achieved during machining area collision or short circuit by controlling a switch of an electromagnetic valve and the multi-axis machine tool control system.
Owner:YANGZHOU UNIV

Oil-water separating device and method

The invention discloses oil-water separating device and method. The oil-water separating device comprises a swirler and a horizontal type agglutinating oil-water separator, wherein a bottom flow pipe of the swirler is in a U shape; the horizontal type agglutinating oil-water separator has the liquid uniform distributing function; an inlet liquid distributor, a rectifying sieve plate, a stainless steel plate ripple filler, a polypropylene gauze ripple filler, an outlet liquid collector, and the like are sequentially arranged in the horizontal type agglutinating oil-water separator, and the stainless steel plate ripple filler and the polypropylene gauze ripple filler are fixed by a limit grid plate; the U-shaped bottom flow pipe of the swirler and a filter screen arranged in the swirler canfilter a small number of solid impurities contained in liquid so as to prevent the blockage of agglutinated fillers; the inlet liquid distributor and the outlet liquid collector ensure that the liquid is uniformly distributed; the rectifying sieve plate reduces the flow rate of the liquid to form lamellar flow; the stainless steel plate ripple filler provides a place for agglutinating and separating oil drops; and the polypropylene gauze ripple filler with an air floating device can further agglutinate and separate residual fine oil drops. The combination simultaneously has the effects of whirl, agglutination and air floatation and can realize the deep separation of oil and water.
Owner:TIANJIN UNIV

AMOLED (active matrix organic light emitting diode) display apparatus

The invention discloses an AMOLED (active matrix organic light emitting diode) display apparatus. The display apparatus comprises a substrate, and a positive electrode, a display unit and a negative electrode which are laminated on the substrate in sequence, wherein a gate in panel (GIP) circuit and a driving voltage negative electrode line are arranged on the periphery of the display unit towards the substrate in sequence; the display apparatus also comprises positive electrode metal; the positive electrode metal crosses over the GIP circuit to be connected with the driving voltage negative electrode line and the negative electrode; the part, overlapped with the projection of the GIP circuit, of the positive electrode metal in a direction perpendicular to the substrate is hollow-out. According to the display apparatus, the positive electrode metal above the GIP circuit is hollow-out, so that the most of the GIP circuit can be exposed, and only a small area of the GIP circuit is covered with the positive electrode metal; therefore, the GIP circuit can be seen clearly from both of the front surface and the back surface, so that disqualification analysis and test can be carried out conveniently; and meanwhile, the condition of short circuit between the negative electrode and the GIP circuit is effectively reduced.
Owner:KUNSHAN GO VISIONOX OPTO ELECTRONICS CO LTD

Ammonia process two-stage countercurrent smoke-discharging and treating device, and method thereof

The invention discloses an ammoniation two-stage upstream exhaust treatment device and a method thereof, which take volatile ammonia as raw materials and recover acid waste gas as useful products, the innovative essence thereof lies in that the invention provides two-stage independent absorption liquid circulating systems with ammonification and without ammonification, comprising independent two-stage absorption liquid spray devices arranged in a reaction tower to facilitate the method of the invention to comprise seven continuous steps including primary and secondary treatment, in particular to optimize the internal structure and relative size of the reaction tower as well as the size of an absorption liquid circulating tube and circulating load of absorption liquid, therefore, the operating gas-liquid ratio is set as 70-195. Compared with the prior art, the invention has the characteristics of greatly increased stability and reliability in the operation of the device, more effective control of loss due to ammonia escape, low energy consumption, simple structure of the device, reduced scarring and obstruction of the device and saved investment and operating cost, and has obvious application prospect in the field of exhaust purification such as boilers and the like.
Owner:王建敏
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