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257results about How to "Avoid short circuit" patented technology

Adjustable laser coaxial powder feeding nozzle

The invention discloses an adjustable coaxial laser nozzle for sending powder, comprising a laser head, a protection lens, a water-cooling sleeve for the protection lens and a column laser cavity arranged on the upper part, a coaxial conical laser cavity which is formed by the inner layer of a laser sleeve and arranged in the middle part, wherein a powder cavity, a secondary external protective cavity and an external water-cooling cavity are arranged on the lower part of the external part of the laser sleeve; the powder cavity is formed between the laser sleeve and a power cavity sleeve screwed together; the secondary external protective cavity is formed between the powder cavity and a protective air casing screwed together; the powder cavity and the protective sir casing are screwed together and adjustable between 1mm to 3mm; 4 to 6 power transmitting pipes and 4 to 6 air tubes are respectively positioned around the top parts of the cones of the powder cavity and the protective air cavity. The adjustable coaxial laser nozzle for sending powder has the advantages that the focus length of the focus lamp fit for the coaxial powder-sending nozzle is between 100mm to 300mm, which ensures convenient assembly and disassembly, even velocity, flexible adjustment of the powder converge diameter, convenient changeable lower coaxial conical parts (the powder cavity, the air casing and the water cavity).
Owner:XI AN JIAOTONG UNIV

Bipolar all-solid-state battery

The present invention addresses the problem of providing: a bipolar all-solid-state battery wherein breakage of a collector of a bipolar electrode is prevented, thereby suitably preventing the occurrence of a short circuit; and a method for manufacturing the bipolar all-solid-state battery. The present invention solves the above-described problem by providing a bipolar all-solid-state battery which comprises: a bipolar electrode that comprises a collector and an electrode active material layer which is composed of a positive electrode active material layer that is formed on one surface of the collector and contains a positive electrode active material and a negative electrode active material layer that is formed on the other surface of the collector and contains a negative electrode active material; and a solid electrolyte layer that contains a solid electrolyte, in said bipolar all-solid-state battery, a plurality of the bipolar electrodes being laminated with the solid electrolyte layer interposed between each two of the bipolar electrodes. The bipolar all-solid-state battery is characterized in that the electrode active material layer is formed inside the end portions of the collector and a reinforcing layer, which is formed on the surface of the collector, is arranged between each end portion of the electrode active material layer and the surface of the collector.
Owner:TOYOTA JIDOSHA KK

Lead frame and packaging structure forming methods

The invention discloses lead frame and packaging structure forming methods. The packaging structure forming method comprises the following steps: a lead frame is provided, wherein the lead frame comprises a first surface and a second surface which is opposite to the first surface, the lead frame is provided with a plurality of bearing units which are arranged in a matrix manner and medium-strength ribs for fixing the bearing units, each bearing unit comprises a plurality of discrete pins, and a first opening is formed between every two neighboring pins; a first plastic packaged layer for filling the first openings is formed; an insulating layer is formed on the first surface of the lead frame and the surface of the first plastic packaged layer, wherein second openings for exposing surfaces of the pins are formed in the insulating layer; a plurality of semiconductor chips are provided, wherein each semiconductor chip is provided with a plurality of bonding pads, and metal bumps are formed on the bonding pads; and the plurality of semiconductor chip are arranged on the lead frame in a flipping manner, and the metal bumps on the semiconductor chips and the surfaces of the pins exposed out from the second openings are soldered together to form a plurality of packaging units which are arranged in a matrix manner. According to the method of the invention, the packaging efficiency can be improved.
Owner:NANTONG FUJITSU MICROELECTRONICS

Novel integrated junction box for three-phase shunt electric energy meter

The invention discloses a novel integrated junction box for a three-phase shunt electric energy meter. The novel integrated junction box comprises a voltage connection module, a current connection module, a neutral line connection module, a voltage fuse protection connection module, a 485 communication and uncapping connection module, a spare fuse, a spare connector, a current socket special for field calibration, and a junction box body, wherein the spare fuse is arranged at one end of the surface of the junction box body; the spare connector is arranged at the other end of the junction box body; the current socket special for field calibration is arranged in the middle of the surface of the junction box body; the voltage connection module is arranged inside the junction box body; and thecurrent connection module is arranged on one side of the voltage connection module. Voltage output and current short-circuit are interlocked, a sliding connecting piece is removed, complicated operations performed according to operating procedures are not needed, and the condition that open circuit of a current transformer and short circuit of a voltage transformer are caused by operation errorsis avoided, so that the whole operation and recovery process is safe, accurate, reliable and rapid.
Owner:上海国缆智能电气有限公司

Chip-grade LED (Light Emitting Diode) packaging device with controllable light emitting angle and packaging process

The invention discloses a chip-grade LED (Light Emitting Diode) packaging device with a controllable light emitting angle and a packaging process. According to the LED packaging device, first white wall adhesive layers are arranged on side faces of an LED chip, a diffusion layer and a fluorescent adhesive layer and are used as reflection surfaces; the reflection surfaces with different shapes can be designed aiming at requirements on different light emitting angles, so that the LED packaging device with the controllable light emitting angle is obtained; furthermore, the diffusion layer is arranged between the LED chip and the fluorescent adhesive layer, and the diffusion layer has a refractive index higher than that of a fluorescent adhesive; the difference between the refractive indexes of the LED chip and the fluorescent adhesive layer is reduced; the refractive indexes of the LED chip, the diffusion layer and the fluorescent adhesive layer have a certain gradient and the light emitting efficiency of the LED chip is improved, so that the luminous flux of the device is improved; the refractive indexes of diffusion powder and a packaging adhesive in the diffusion layer are different, and the condition that light emission of blue light of the LED chip is not uniform can be improved, so that the space color uniformity of the device is improved; and the design of a concave groove and white wall structure is adopted, so that the reliability problem of a product is greatly improved.
Owner:WUHU JUFEI PHOTOELECTRIC TECH CO LTD

External medium voltage power supply system for motor train unit

Disclosed is an external medium voltage power supply system for a motor train unit. The external medium voltage power supply system comprises a normal external medium voltage power supply circuit and an emergency external medium voltage power supply circuit; the external medium voltage power supply system is characterized in that the two sides of an external power supply contactor are connected with an AC/DC conversion power supply module through a diode separately; and the other end of the AC/DC conversion power supply module is connected with an external medium voltage power supply through a normally-open contact of an emergency external phase sequence detection contactor. The apparatus has the following three remarkable effects: 1, the system is provided with a hard line interlocking circuit, so that vehicle safety can be ensured; when a misoperation is done by a person for external connection before falling down, it is ensured that a pantograph type current collector automatically falls down when an external power supply is not inserted in the vehicle, namely when an external key is pulled off, in order to ensure that external power supply and high voltage power supply do not supply power concurrently; 2, the external key is provided, so that only one external power supply can be connected to the whole motor train unit in order to prevent interphase short circuit of two power supplies; and 3, the emergency power supply circuit is provided, so that it is ensured that a charger can be started through an external power supply interface to charge a storage battery when the vehicle storage battery is out of power while a control power supply is not available.
Owner:CRRC CHANGCHUN RAILWAY VEHICLES CO LTD

Intelligent charging pile with solar auxiliary power generation function

The invention discloses an intelligent charging pile with a solar auxiliary power generation function. The intelligent charging pile comprises a diesel generator, an LED advertisement display screen, dehumidifiers and a humidity sensor; a storage battery is fixedly mounted at the bottom of a pile body; a solar photovoltaic panel and a warning light are both fixedly connected to the top of the pile body; the diesel generator is arranged on one side of the pile body, and a lightning arrester is mounted on the other side of the pile body; charging heads are connected to the two sides of the pile body correspondingly; a temperature display screen and the LED advertisement display screen are embedded on the outer side of the pile body; controllers, an IC card sensing device and an IC card balance display screen are embedded on the outer wall of the pile body; and the dehumidifiers, the humidity sensor and a temperature sensor are embedded in the inner chamber of the pile body. According to the intelligent charging pile with the solar auxiliary power generation function, disclosed by the invention, due to the arrangement of the diesel generator and the solar photovoltaic panel, charging can be performed during power outage; due to the arrangement of the LED advertisement display screen, advertising can be codnucted; and due to the embedding of the dehumidifiers, the internal moisture can be removed.
Owner:湖北盛泓电力技术开发有限公司

Charging gun having good heat conduction and heat dissipation performances

ActiveCN108400469AGood thermal conductivity and heat dissipation performanceAvoid short circuitVehicle connectorsCharging stationsEngineeringMetal
The invention relates to a charging gun having good heat conduction and heat dissipation performances. The charging gun comprises a gun body, a terminal, an insulated sleeve and a metal heat-dissipation part; the rear end part of the terminal is arranged on the sleeve in a penetrating manner; an installation hole used for fixing the sleeve in a penetrating manner is arranged on the metal heat-dissipation part; and the heat-dissipation part is fixed on the gun body. Compared with the prior art, the charging gun having good heat conduction and heat dissipation performances disclosed by the invention has the advantages that: because the metal heat-dissipation part is used as the main body for fixing the terminal and the metal heat-dissipation part and the terminal are separated by the insulated sleeve, short-circuiting is avoided; the traditional large ceramic part for fixing the terminal is eliminated; the easy breaking problem due to trepanning on the large ceramic part is avoided; bothprocesses of processing the sleeve and forming the installation hole on the metal heat-dissipation part are relatively convenient and low in processing difficulty; more importantly, the heat dissipation performance of metal is good; the metal heat-dissipation part is used as the main body for fixing the terminal; therefore, the heat dissipation effect is greatly improved; and relatively high heatdissipation requirements of the charging gun can be satisfied.
Owner:ROCKING ENERGY INTELLIGENT TECH CO LTD +1

Water-proof electric heating actuator

The invention discloses a water-proof electric heating actuator. A drive element of the water-proof electric heating actuator comprises a temperature sensing bulb fixing sleeve (3) which is installed inside a handle shell (1), a temperature sensing bulb (4) which is arranged inside the temperature sensing bulb fixing sleeve (3), and a reset part (5), wherein a rod part (41) which extends out or draws back inside the temperature sensing bulb (4) along with the change of temperatures is arranged inside the temperature sensing bulb (4) so that when extending out, the rod part (41) can push a transmission push rod (2) to move downwards, when the rod part(41) draws back, the reset part (5) drives the transmission push rod (2) to reset; a through hole which enables a lead line (6) to penetrate out is formed in the side wall of the temperature sensing bulb fixing sleeve (3), and the lead line (6) further penetrates through the through hole through a sealing pad (71) to seal. The structural design of the water-proof electric heating actuator can enable the actuator to have the water-proof performance, and therefore the water-proof electric heating actuator can work in a humid environment for a long time and the phenomenon of circuit cutting-out or arcing is prevented from occurring.
Owner:BEIJING JINGHUA YUCHUANG ENERGY SAVING EQUIP

Lithium battery electrode sheet cleaning device and method

ActiveCN103386402ALow self-discharge rateAvoid short circuitCleaning using gasesEngineeringMetal
The invention relates to a lithium battery electrode sheet cleaning device and method, and aims to provide the lithium battery electrode sheet cleaning device and the lithium battery electrode sheet cleaning method capable of cleaning metal filings and dust on the surface of an electrode sheet and metal filings and dust on a cut part at the edge of the electrode sheet. The lithium battery electrode sheet cleaning device comprises an upper adsorption conveying belt, a lower adsorption conveying belt, an upper vacuum adsorption plate, a lower vacuum adsorption plate, an edge cleaning device, a lower surface cleaning device and an upper surface cleaning device, wherein the conversion of upper/lower surface adsorption is realized through an internal adsorption cavity of the upper vacuum adsorption plate on the upper adsorption conveying belt and the lower vacuum adsorption plate on the lower adsorption conveying belt; and the cleaning is performed through a left edge cleaning device, a right edge cleaning device, the lower surface cleaning device and the upper surface cleaning device in sequence. The lithium battery electrode sheet cleaning device and the lithium battery electrode sheet cleaning method have the beneficial effects that the metal filings and the dust on the surface of the electrode sheet and the metal filings and the dust on the cut part at the edge of the electrode sheet can be cleaned and on-line continuous cleaning can be realized.
Owner:WANXIANG 123 CO LTD

Short circuit overheating protection plug

The invention relates to a short circuit overheating protection plug. The plug comprises a shell and a plurality of conducting plates, wherein the shell is in a hollow structure; the conducting platesare slidably connected to a side wall of the shell; a connecting plate is adhesively fixed on the plurality of conducting plates; an upper end of the shell is provided with a chute; a control rod isslidably connected in the chute; a first spring is adhesively fixed on the control rod; and one end, away from the control rod, of the first spring is adhesively fixed on an inner wall of the shell. The short circuit overheating protection plug has the advantages that when the conducting plates emit heat due to poor contact with a metal shrapnel in a socket, a steel ball strikes the connecting plate and drives the conducting plates to vibrate and moves at a distance toward the socket direction, at this time, the conducting plates and a thermoelectric power generation strip are out of contact so that an electromagnet is deenergized; the steel ball resets under the action of a second spring; the abovementioned operations are repeated so that the conducting plates and the socket are connectedmore tightly to prevent the dangerous condition that the short circuit is caused by overheating of the plug due to poor contact.
Owner:温州如剑环保科技有限公司

Intelligent earth wire for connecting automobile emergency startup power supply with automobile storage battery

The invention discloses an intelligent earth wire for connecting an automobile emergency startup power supply with an automobile storage battery. According to the invention, an MCU is adopted as a control chip and combined with a power supply circuit, a temperature detection circuit, a voltage detection circuit, a working state prompting circuit, a load access detection circuit, a load connectionstate identification circuit, a connection control circuit and other peripheral circuits. In this way, an automobile storage battery externally connected with the earth wire can be detected. By meansof the MCU, the connection state of the automobile storage battery can be judged. Meanwhile, when the automobile storage battery is in a positive connection state, the electric connection between a first negative electrode connecting end and a second negative electrode connecting end is connected through a connection control circuit control switch. The automobile emergency startup power supply andthe automobile storage battery are connected in parallel. In this way, the formation of a short circuit at the two ends of the earth wire is avoided. Meanwhile, the occurrence of a safety accident caused by the reverse connection of the automobile storage battery is avoided, so that the product is safer and more reliable.
Owner:深圳市恒浩伟业科技有限公司

Semiconductor memory device structure and manufacturing method thereof

PendingCN107994018AEnlarge the crafting windowAvoid short circuitTransistorElectricityLine structure
The invention provides a semiconductor memory device structure and a manufacturing method thereof. The memory device structure comprises a semiconductor substrate, word line structures and contact structures, wherein the semiconductor substrate comprises an active area and a groove isolation structure, the word line structures are formed in the semiconductor substrate and crossed with the active area, a long end tail part is arranged at one end of any word line structure, a short end tail part is arranged at the other end of the word line structure, the long end tail parts and the short end tail parts of adjacent two word line structures are arranged in a staggering manner, and the contact structures are formed at the long end tail parts of the word line structures so that electric lead-out of the word line structure can be realized. According to the semiconductor memory device structure and the manufacturing method thereof, mask design is performed to word line grooves, the word linestructures with the tail parts arranged in a long and short staggering manner are prepared, the occupied areas of the whole regions of the contact structures are not required to be increased, the manufacturing windows of the contact structures can be increased, and the short circuit of adjacent word line structures due to the contact structures is avoided. The tail parts of the word line structures are not required to be bent, the technology complexity is reduced, and the locating difficulty of the contact structures is reduced.
Owner:CHANGXIN MEMORY TECH INC

Protection device for battery pack of new energy automobile

The invention discloses a protection device for a battery pack of a new energy automobile. The protection device comprises a battery box, wherein a lower support strip plate, an upper support strip plate and a grid plate are arranged in the battery box; the grid plate is distributed at the bottom end of an inner cavity of the battery box in a square way; the bottom end of the grid plate is fixedlywelded with the center of the bottom end of the battery box; the lower support strip plate is fixedly welded at the bottom end of the inner cavity of the battery box in the grid plate; the side end of the lower support strip plate is fixedly welded with the grid plate. The protection device for the battery pack of the new energy automobile has the advantages that when the automobile is driven insunny days and does not encounter with water pits, a cover plate and a plug valve are opened to exchange heat with outside cold air flow to carry away heat, and the air cooling type is matched with the water cooling type of the automobile self, so that the good heat radiating property is realized; when the automobile is driven in rainy days or encounters with water pits, the cover plate is covered, and the plug valve is closed, so that the outside water is prevented from entering the battery box, and the short-circuiting of the battery of the battery box due to water is avoided; the whole heatradiating property is better, and the waterproof effect is good.
Owner:安徽普司登汽车服务有限公司

Device and method for compositely machining curved hole through magnetic field guide and electrolysis electric sparks

InactiveCN106825806AAvoid short circuitImprove processing stabilityElectric circuitsElectric machineryScrap
The invention discloses a device and method for compositely machining a curved hole through magnetic field guide and electrolysis electric sparks. The method and the device are suitable for micro machining of non-magnetic materials and belong to the field of non-traditional machining in a manufacturing technology. According to the device and the method, a guide ring comprises a left electromagnetic device and a right electromagnetic device, wherein the left electromagnetic device and the right electromagnetic device load voltage to generate different magnetic fields through a digitally controlled stabilized voltage supply; the guide ring is arranged in a sliding rail to continuously output magnetic field force to an electrode; a tool electrode generates a tilt angle in a universal joint due to the magnetic field force; a flexible hose is fed along the swing direction of the tool electrode under the drive of a vertical feed motor; the tool electrode is electrochemically discharged in the direction to etch off a workpiece material; a circulating pump in the device conveys an electrolyte to the flexible hose, and the electrolyte flows to the electrode through a reserved micro-pore in the universal joint, thereby achieving the effects of discharging scraps and supplementing the electrolyte; and a computer in the device controls the magnetic field intensity through regulating output voltage of the digitally controlled stabilized voltage supply, and the rotating speed and the corner of a corner stepper motor and the feed velocity of a vertical feed motor are controlled through a control card.
Owner:JIANGSU UNIV
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