287results about How to "Avoid short circuit failure" patented technology

The invention discloses a method for prolonging the cycle life of a zinc battery and application thereof. A method of inhibiting the zinc dendritic crystal/bulge growth on the surface of a zinc negative electrode through a porous coating is used; the porous coating is used for prolonging the cycle life of the zinc battery; the porous coating is positioned between the zinc negative electrode and abattery diaphragm. Compared with the prior art, the porous coating disclosed by the invention has the advantages of low price, light weight and no pollution; continuous production can be realized on the existing battery coating equipment; the assembly process of the ordinary secondary zinc battery is not influenced; the energy density and power density of the secondary zinc battery cannot be obviously reduced; the cycle life of the secondary zinc battery can also be obviously prolonged; the method can be applicable to a battery system using metal zinc as the negative electrode; important economic and social benefits are realized.

The invention relates to a running state monitoring and arc protecting system for a switch cabinet, which belongs to the monitoring and relay protection field of electric equipment. The system consists of a host machine and a slave machine which are both controlled by a DSP (Digital Signal Processor) and adopt field bus communication. A digital temperature sensor is used for monitoring the temperature in the switch cabinet; and an ultraviolet sensor is used for detecting partial discharge in the switch cabinet and ultraviolet rays emitted by short circuit arcs. The system has the characteristics that temperature rise or partial discharge caused by abnormal operation of the switch cabinet can be detected and a warning signal can be given out immediately to prevent the switch cabinet from short troubles. If the switch cabinet is suddenly short-circuited, the system can immediately detect the ultraviolet rays emitted by the arcs, rapidly transmit information through an advanced field bus and quickly and selectively clear faults.

A liquid crystal display (LCD) device includes a LCD panel and a flexible wiring member coupled together by an anisotropic-conductive adhesive film (ACF). The ACF includes insulating resin and a plurality of conductive particles dispersed therein and each having an insulating film on a conductive body. The insulating film is broken by the thermal compression of the ACF during manufacture of the LCD device, thereby allowing terminals of the LCD panel and terminals of the flexible wiring member to be electrically coupled together.

The invention provides a power battery thermal protection system, which is used for carrying out thermal protection on a power battery pack. The power battery pack comprises an upper cover, a lower housing and a plurality of module integration modules which are located between the upper cover and the lower housing and are arranged in the first direction. The power battery thermal protection systemcomprises fireproof thermal insulation pads, which are arranged between the upper cover and the module integration modules, wherein the fireproof thermal insulation pads are in one-to-one correspondence with the module integration modules; and a battery pack explosion-proof valve, which is arranged on the inner side of at least one side edge, in the second direction, of the lower housing, whereinthe second direction is perpendicular to the first direction. The system realizes prolonging of time before the fire of a battery core breaks through a power battery housing when the battery core issubjected to thermal runaway due to heating, thereby leaving enough escape time for passengers, and guaranteeing the safety of the passengers.

The invention belongs to the technical field of intelligent substation inspection devices, and specifically relates to an unmanned aerial vehicle (UAV)-based inspection system. The UAV-based inspection system includes multiple position transmitters, an unmanned aerial vehicle, and a charging station. Each position transmitter is suitable for being installed on a meter or power equipment, and is used for transmitting a position signal and an equipment identifier, wherein one meter or power equipment corresponds to one equipment identifier. The unmanned aerial vehicle is used for receiving the position signal and flying to the meter or power equipment corresponding to the equipment identifier, and collecting a dial image of the meter or detecting the temperature of the power equipment. The charging station includes a charging platform for carrying the UAV, a charging sensor for detecting the landing signal of the UAV, and a charging module for charging the UAV. Inspection using the UAV-based inspection system in the scheme is convenient and quick, and safe and reliable. The production efficiency is improved, and the production cost is saved.

A stacked-layered thin film solar cell has a plurality of independent unit cells comprising a substrate, a first electrode layer, a first photoconductive layer, an interlayer, a second photoconductive layer, and a second electrode layer in a series stacked structure, wherein at least one first separation groove is formed within the first electrode layer and the stacked-layered thin film solar cell is characterized in: at least one second separation groove formed on the interlayer, at least one connection groove passing through the first photoconductive layer and the second photoconductive layer, and at least one third separation groove extending downward at a periphery of each of the unit cells so that the connection grooves and the third separation groove are concurrently located inside a projection zone of the second separation groove.

A substrate includes a base substrate, and a pad at one side of the base substrate, wherein the pad comprises: a first conductive pattern on the base substrate, an insulating layer including a plurality of contact holes exposing a portion of the first conductive pattern, and second conductive patterns separately on the insulating layer and connected to the first conductive pattern through the plurality of contact holes, wherein side surfaces of the second conductive patterns are exposed.

The invention discloses a steam box, and relates to the field of household appliances. The steam box comprises: a box body, wherein a water storage box mounting chamber is arranged in the box body, and a box body front panel is provided with a water storage box mounting opening and a pushing mechanism extending opening which are communicated with the water storage box mounting chamber; a water storage box, which is inserted into the water storage box mounting chamber from the water storage box mounting opening; a control panel, which is arranged on the front side of the box body front panel; apushing mechanism, which is arranged in the water storage box mounting chamber and can drive the control panel to close or open the water storage box mounting opening through inward and outward movement of the pushing mechanism extending opening; and a shielding piece, which is at least used for sealing the pushing mechanism extending opening where the pushing mechanism penetrates out. The steambox can seal the pushing mechanism extending opening penetrating out of the pushing mechanism, insects and mice are prevented from entering the steam box, and the safety sealing performance of the steam box is guaranteed.

The invention relates to a water production gas well full-life-circle drainage gas recovery method and system. The system comprises drainage gas recovery equipment, a gas-water shunting device, dryingequipment, a gas power generator and a compressor. A first branch of an outlet pipeline of the drainage gas recovery equipment is connected to an outer conveying pipe network. A second branch is connected with the gas-water shunting device. Gas flowing out of the top of the gas-water shunting device passes through an adjusting valve and is dried through the drying equipment, then the gas is divided into two branches, one branch flows into the gas power generator through a flow adjuster, the other branch flows into the compressor, and the gas power generator provides electric energy for the compressor by burning natural gas. The natural gas is pressurized through the compressor, multiple stages of pressure adjusters are started by the natural gas, shaft accumulated liquid is removed section by section, and continuous production of a gas well is guaranteed. The method and system can be suitable for water production gas well full-life-circle drainage gas recovery, one-time construction is effective for a long time, the gas lift starting pressure is low, the energy consumption is low, external electric energy does not need to be used, and the method and system are safe, reliable, capable of being reused, easy to manage and low in maintenance cost.

An electronic component includes an electronic component body, first and second outer electrodes, and first and second inner electrodes. The first outer electrode includes a first conductive layer that does not include silver and a second conductive layer that is deposited on the first conductive layer so as to be positioned at an outermost layer and that includes silver. The second conductive layer includes a first contact portion in contact with a first main surface and is not in contact with first and second side surfaces. A first inner conductor is provided on a virtual straight or substantially straight line connecting a second inner electrode closest to the first contact portion and the first contact portion in the shortest distance. The first inner conductor is connected only to the first outer electrode or is connected to none of the first and second outer electrodes.

The invention discloses a combined type lightning arrester based on a disc-shaped multi-gap arc extinguishing and lightning protection device, in particular to a lightning arrester applied to overheadlines above 10KV. The structure of the invention is as follows: upper and lower connecting fittings are respectively arranged on the upper and lower parts of the insulating support rod, the upper spherical electrode is connected with the upper connecting fittings, the lower spherical electrode is connected with the lower connecting fittings, a first, second,.. N-th disk-shaped multi-gap arc extinguishing lightning protection device is serially connected between the upper connecting fittings and the lower connecting fittings, N is a natural number, 1 <= N <= 8. The lightning current is elongated, elongated and ejected to extinguish the electric arc, thereby avoiding the occurrence of inter-phase short circuit fault and reducing the counterattack probability caused by lightning strike lightning protection wire; and the lightning current is elongated, elongated and ejected. Strong ability to withstand lightning surge, large flow capacity, high security; Good consistency of discharge gapsize; Simple structure; The special multi-gap arc will not be reignited because of the rapid recovery of dielectric insulation after the power frequency continues to flow through the zero-extinguishing arc.

The invention discloses a complementary dead-zone driving circuit of a T-type three-level IGBT. The driving circuit comprises a complementary dead-zone circuit module, a fault wave locking circuit module and an optical coupling interlocking circuit module. A driving signal given out by a DSP chip is converted into two complementary driving signals with dead zones. The driving signals are subjected to optical coupling isolation and interlocking, and then is output to a driving plate to drive an IGBT module, so as long as the DSP chip gives out two driving signals, the driving signals can be converted into required four driving signals to drive the T-type three-level IGBT. Through the optical coupling interlocking circuit module, electrical isolation of strong-weak electricity and interlocking are achieved. The two driving signals cannot be strong simultaneously, so a direct-connection short-circuit fault of the IGBT is effectively avoided. When the IGBT fails or stops suddenly, the fault wave locking circuit is capable of immediately locking the driving signals, so reliable turning off of the T-type three-level IGBT is ensured. According to the invention, resources of the DSP are saved; the dead-zone time is adjustable, so the direct-connection short-circuit fault of the IGBT is avoided; and the driving circuit works stably and reliably.

A laminated ceramic capacitor includes a body having an inner layer portion and an outer layer portion and a plurality of terminal electrodes spaced apart from each other in a length direction of the body. The inner layer portion has a plurality of internal electrodes stacked in a height direction of the body. The internal electrodes have led-out portions led out to a side face of the body. The outer layer portion is disposed on one of opposite faces of the inner layer portion in the height direction. Each terminal electrode extends along the height direction to cover corresponding one of the led-out portions and is provided with an intermediate portion and an end portion. The intermediate portion has a larger electrode width than the led-out portion. The end portion has a smaller electrode width at an edge of the side face than the intermediate portion.

The invention discloses a pad structure of integrated circuit package, in particular to a connection pad structure between a fine-pitch lead-free plate-type carrier ceramic package lead-out end and a circuit board. The pad structure comprises a ceramic casing 1, a pad 2, a protrusion 3 and an interconnection blind hole 4, internal wiring of the ceramic casing 1 is connected with the pad 2 through the interconnection blind hole 4 to be capable of meeting fine-pitch interconnection requirements, the protrusion 3 is located on the pad 2 and protrudes out of the surface of the ceramic casing 1, a gap with equal height of the protrusion 3 is formed between the ceramic casing 1 and a circuit board 5 after assembly, checking and washing can be conveniently carried out through the gap, users can easily wash redundant soldering materials and soldering flux, so that insulating property reduction even short troubles caused by vestigial soldering materials and soldering flux is avoided.

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.

The invention relates to a steering controller of a high-power direct-current motor, which is composed of an input control module and a power output control module. The input control module comprises a forward input control circuit and a reverse input control circuit. The power output control module is that four power MOS (Metal Oxide Semiconductor) transistors are connected in parallel to form an H-bridge control circuit. The forward input control circuit comprises two circuits. The reverse input control circuit also comprises two circuits. Each circuit comprises a DC-DC (Direct-Current-Direct-Current) power module, a delay circuit, a photoelectric isolation circuit and a driving circuit. Two circuits of voltage signals output by the forward input control circuit are respectively transmitted to a power MOS transistor 1 and a power MOS transistor 3. Two circuits of voltage signals output by the reverse input control circuit are respectively transmitted to a power MOS transistor 2 and a power MOS transistor 3. By utilizing the modularization circuit design and a two-layer installation structure, the load capacity of the steering controller disclosed by the invention is up to 48 VDC/120A. The steering controller is applied to the steering control of the high-power direct-current motor in a high-reliability occasion. The steering controller has the characteristics of being rapid in action speed, strong in current impact resistance capacity, steady for working and the like.

A control knob is supported on a switch base via a first pivotal shaft. A movable contact holder holds a movable contact, faces an inner side face of the control knob, and is supported on the switch base via a second pivotal shaft. The movable contact holder is provided with a sliding surface which faces the control knob. A control plunger whose tip end slidably abuts on the sliding surface is fitted to the control knob so as to be slidable in a direction perpendicular to an axis of the first pivotal shaft. A spring is provided between the control knob and the control plunger so as to urge the control plunger to a direction to but on the sliding surface. The movable contact is attached to the movable contact holder so as to come into contact with the stationary contact when the movable contact holder is turned to at least one of first and second actuation positions. Thus, it is possible to provide a switch which enables a rapid opening and closing between a movable contact and a stationary contact by imparting a snap action to the movable contact.

The invention discloses a installation-friendly ground lamp with a rotary head. The invention comprises a lamp body (200), a base tube (1), a facial cover (13) and two positioning screws (16). The top part of the base tube (1) is fixedly connected with the facial cover (13); two opposite guide grooves (100) extending horizontally are arranged on the sidewall of the base tube (1); the upper part of the lamp body (200) is inserted into the inner cavity of the base tube (1); the two positioning screws (16) are put through the guide grooves (100) respectively, and connected with the lamp body (200) by screw threads; the axial lines of the positioning screws (16) are superposed; the lamp body (200) can be rotated horizontally through the positioning screws (16) along the guide grooves (100). The installation-friendly ground lamp can be extensively applied to the field of light fittings.