280results about How to "Prevent short circuit" patented technology

The invention discloses a power connection device. The power connection device comprises a power connection base and a power connection plug, wherein the power connection base is fixedly arranged in a wall body; the power connection plug is connected with equipment; the power connection base comprises an insertion slot of which an opening faces a front end, and power connection slots which are arranged in two side walls of the insertion slot symmetrically; back ends of the power connection slots are further provided with longitudinal sliding slots; inner sides of the longitudinal sliding slots are provided with through slots which communicate with the insertion slot; baffle plates are arranged in the longitudinal sliding slots in a sliding way; mandrels are arranged in the through slots in a sliding way; outer side ends of the mandrels are fixedly connected with back ends of the baffle plates; inner side ends of the mandrels extend into the insertion slot; elastic parts are fixedly arranged in back end walls of the longitudinal sliding slots; front ends of the elastic parts are fixedly connected with back end walls of the baffle plates; and the conductive elastic sheets are arranged in the power connection slots.

A display device includes: a pixel array having a plurality of pixels arranged in a matrix form, each of the pixels including a sampling transistor configured to sample a data potential from a video signal line which is insulated from and intersects a control line in response to the change in potential of the control line, and a light-emitting element configured to emit light at the brightness commensurate with the magnitude of the post-sampling data potential.

The invention discloses an explosion protection method and a device when testing a rechargeable battery. The rechargeable battery to be tested is sealed into an explosion protection box, and a terminal point of the rechargeable battery is led to outside of the explosion protection box used for connecting a rechargeable battery testing device. A fire extinguishing apparatus and an explosion detection device are arranged inside the explosion protection box, thus when the rechargeable battery explodes, the explosion detection device triggers the fire extinguishing apparatus to put out a fire, andcuts a junction circuit of the tested battery and the rechargeable battery testing device. The invention has the advantages of simple operation, safety, low cost, capacity of guaranteeing safety of staff, protecting the rechargeable battery testing device, and preventing short circuit of the testing device caused by battery explosion.

The invention provides a charging socket protection apparatus for an electric vehicle and a control method for the charging socket protection apparatus. The protection apparatus comprises a temperature sensor, a temperature control module, a vehicle control module, a high-voltage battery control module and an emergency power-off module, wherein the temperature sensor is used for performing temperature collection on multiple distribution points on a charging socket in vehicle charging; the temperature control module is used for performing preprocessing on the multiple collected distribution point temperature signals, and sending the temperature signals to the vehicle control module; the vehicle control module is used for performing further processing on the temperature signals sent from the temperature control module, obtaining a highest temperature value and a highest temperature rising value of each distribution point, and giving out a power-limiting charging instruction, a charging stop instruction or an emergency power-off instruction according to comparison results between the highest temperature values and the highest temperature rising values and respective threshold values; and the high-voltage battery control module and the emergency power-off module are used for reducing a charging current or disconnecting a high-voltage relay respectively according to the instructions from the vehicle control module. By adoption of the charging socket protection apparatus and the control method therefor, charging can be stopped effectively in time to protect vehicle and equipment so as to further lower risk and protect personal safety.

The invention relates to a multifunctional and combined type intelligent insulating rod which is applied to the fields such as electric power system operation, examining, repairing and high voltage tests. A split type structure is adopted, and a combined type connector or an electroscope device is connected on an insulating rod body in a threaded mode. An intelligent type leakage current detecting device is connected at the tail end of the insulating rod body in a threaded mode. The multifunctional and combined type intelligent insulating rod has good basic functions such as insulating properties, mechanical properties and effective lengths of a traditional insulating rod or an electroscope and also has the advantages that functions are combined, the connector is in a combined type, conversion is convenient, electricity is checked at any time, alarm is given when leakage exceeds the limit and the multifunctional and combined type intelligent insulating rod is convenient to carry and the like. In the effective length of the insulating rod body, the insulating rod body has the function of an electroscope when an electricity checking device head is connected at the front end of the insulating rod body, and the insulating rod body has the function of the insulating rod when the combined type connector is connected at the front end of the insulating rod body. The insulating rod body has the function of intelligent voice alarm when a leakage current out of limit alarming device is connected at the rear end of the insulating rod body, and the insulating rod body has the advantages of being practical in structure, easy to operate, convenient to carry, fast in conversion, complete in effect and the like.

The invention relates to a safe, reliable and intelligent solar mosquito killing lamp applicable to an outdoor environment. The solar mosquito killing lamp comprises two mosquito killing mechanisms, the mosquito killing mechanisms comprise lifting mechanisms and mosquito killing boxes, driving units are arranged at the two sides of each mosquito killing box, the mosquito killing boxes are providedwith cross plates, baffles, concave openings, cleaning mechanisms and collecting grooves, each concave opening is internally provided with a power grid and several lamp tubes, and each cleaning mechanism comprises a third motor, a third driving shaft, several brushes and two translation components. According to the safe, reliable and intelligent solar mosquito killing lamp applicable to the outdoor environment, the driving units drive the baffles to rotate downwards to cover the surface of the concave openings in rainy weather, rainwater is prevented from hitting the power grids, a short circuit is not caused, the lifting mechanisms make the mosquito killing boxes lift, children are prevented from touching the power grids, a safety accident is not caused, and the safety of equipment is improved; besides, the cleaning mechanisms automatically clean the power grids, so that mosquito dead bodies fall into the collecting grooves, people's time is saved, cleaning is facilitated, and therefore the practicability of the equipment is improved.

System and method of providing a photovoltaic (PV) cell with a complex via structure in the substrate that has a primary via for containing a conductive material and an overflow capture region for capturing an overflow of the conductive material from the primary via. The conductive filling in the primary via may serve as an electrical contact between the PV cell and another PV cell. The overflow capture region includes one or more recesses formed on the substrate back surface. When the conductive material overflows from the primary via, the one or more recesses can capture and confine the overflow within the boundary of the complex via structure. A recess may be a rectangular or circular trench proximate to or overlaying the primary via. The recesses may also be depressions formed by roughening the substrate back surface.

The invention belongs to the technical field of aluminum air batteries, and particularly discloses an all-solid-state flexible and stretchable fibrous aluminum air battery and a preparation method thereof. According to the method, a hydrogel electrolyte is firstly prepared by a cyclic freezing method; the electrolyte coats an aluminum spring at a negative electrode and is crosslinked into a solid state; and staggered oriented carbon nanotube films evaporated with silver nanoparticles coat the outmost layer to obtain the fibrous aluminum air battery. The special air electrode structure does not need a metal current collector or a binder. Due to the structural design, the fibrous aluminum air battery has excellent electrochemical properties; the specific capacity can reach 935mAh/g; and the energy density can reach 1168Wh/kg. The battery also has flexibility and stretchability. The electrolyte is in the solid state, so that the risks of a short circuit and an electrolyte leakage in the bending and stretching process can be effectively prevented; the battery is easy to weave and integrate; and the battery can be woven into energy storage fabrics to provide energy for a wearable electronic device, and large-scale application is excepted to be achieved.

A submount with an electrode layer having excellent wettability in soldering and method of manufacturing the same are disclosed. A submount (1) for having a semiconductor device mounted thereon comprises a submount substrate (2), a substrate protective layer (3) formed on a surface of the submount substrate (2), an electrode layer (4) formed on the substrate protective layer (3) and a solder layer (5) formed on the electrode layer (3) wherein the electrode layer (4) is made having an average surface roughness of less than 1 [mu]m. The reduced average surface roughness of the electrode layer (4) improves wettability of the solder layer (5), allowing the solder layer (5) and a semiconductor device to be firmly bonded together without any flux therebetween. A submount (1) is thus obtained which with the semiconductor device mounted thereon is reduced in heat resistance, reducing its temperature rise and improving its performance and service life.

A semiconductor package and a fabrication method thereof are disclosed. The fabrication method includes providing a carrier board; forming a plurality of metal bumps on the carrier board; covering on the carrier board a resist layer having openings for exposure of the metal bumps, the openings being smaller than the metal bumps in width such that a metal layer is formed in the openings, the metal layer having extension circuits and extension pads and bonding pads formed on respective ends of the extension circuits; removing the resist layer; electrically connecting at least one semiconductor chip to the bonding pads; forming an encapsulant on the carrier board to encapsulate the semiconductor chip; and removing the carrier board and the metal bumps to expose the metal layer. Therefore, the extension pads of the exposed metal layer can be electrically connected to an external device through a conductive material in subsequent processes, and the extension circuits can be disposed flexibly in accordance with the degree of integration of the chip, so as to reduce the electrical connection path between the chip and the extension circuits.

The invention provides a lamp structure. The lamp structure comprises a lamp seat, an insulation base, a first electrode plate, a second electrode plate and a plurality of light emitting units, wherein the insulation base is provided with an annular groove and a radial groove positioned in the annular groove; a plurality of first through holes are formed at one end, away from the center of the insulation base, of the radial groove, and a plurality of second through holes are correspondingly formed at positions, adjacent to the first through holes, of the annular groove; the first electrode plate is arranged in the radial groove; a plurality of first terminals passing through the first through holes are arranged on the first electrode plate; the second electrode plate is arranged in the annular groove; a plurality of second terminals passing through the second through holes are arranged on the second electrode plate; and the plurality of light emitting units encircle the center of the insulation base and emit light from the side direction of the insulation base.

The invention discloses a material-flow mixing and dispersing device, comprising a cylindrical-shaped tube body (1), a vortex mixing chamber (2), a lifting pipe (3), and a rectifier board (4), wherein, the cylindrical-shaped tube body (1) comprises a roof cover plate (5), a circular tube (8) and a circular-tube-body bottom board (9), wherein, the center of the roof cover plate (5) is provided with an opening hole (6), the inside of the cylindrical-shaped tube body (1) is provided with the vortex mixing chamber (2) and the lifting pipe (3), the vortex mixing chamber (2) is located under the roof cover plate (5), the lifting pipe (3) is located under the vortex mixing chamber (2), the bottom of the lifting pipe (3) is connected with the circular-tube-body bottom board (9), the rectifier board (4) is located at the lower part of the cylindrical-shaped tube body (1), and is connected under the circular-tube-body bottom board (9) through a rib plate (17). The gas-liquid material-flow mixing and dispersing device provided by the invention can be used for mixing and dispersing the gas-liquid material-flow in a hydrogenation reactor, the material-flow experiences vortex baffling, gas-phase elevating and swirl dispersing, accordingly, for the high-speed gas-liquid material-flow, full mixture of gas phase and liquid phase is completed, the impulsive force of the fluid is slowed down, and the fluid is evenly dispersed.

A cylindrical alkaline storage battery suitable to increase its capacity and arranged to prevent a short circuit and internal resistance increase, including an electrode group held in an outer can and formed by rolling up together a negative electrode having a negative-electrode core body and a hydrogen-absorbing alloy layer supported thereon, a positive electrode, and a separator. The negative electrode includes a main part forming inside part of the electrode group, a thin part smaller than the main part in the thickness of the hydrogen-absorbing alloy layer and the amount of a hydrogen-absorbing alloy contained in unit volume of that layer, and a boundary part formed between the main and thin parts and having a hydrogen-absorbing alloy layer thickness varying along the length of the negative-electrode core body. The positive electrode outer end and the negative electrode boundary part are at different positions circumferentially of the electrode group.

The present invention discloses a self-locking safe power supply socket. The self-locking safe power supply socket is mainly composed of a core body, a compressed spring, a rotary ratchet self-locking mechanism, an upper shell and a lower shell. The core body possesses a plug hole, a current carrying reed, a self lubricating wedge block, a moving contact and a stroke limiting rod. The compressed spring is arranged at the axis part of the core body, and the core body can do up and down limited movement along the axis. The rotary ratchet self-locking mechanism is composed of a rotating ratchet, a fixing ratchet, a central shaft and an inner circular ratchet of the core body. Under the action of continuously pressing a plug after the plug is inserted or under the elastic force of the compressed spring, a use state that the core body is unlocked to be released upwards or a standby state that the core body is locked slightly downwards is realized, so that the self-locking safe power supply socket of the present invention has the functions of preventing the plug from disengaging because of uncertain external forces at use, preventing electric shock caused by that a metal article is inserted in the plug accidently, and preventing the power supply short circuit faults, and is high in safety.

The invention provides a preparation method of a display substrate, the display substrate and a display device. The display substrate comprises a substrate body and a first flat layer arranged on oneside of the substrate body; a first metal layer which is arranged on one side, deviating from the substrate body, of the first flat layer; a second flat layer which is arranged on the sides, deviatingfrom the substrate body, of the first metal layer and the first flat layer; and a second metal layer which is arranged on one side, deviating from the substrate body, of the second flat layer, wherein the first metal layer comprises a first metal wire, the orthographic projection of the second metal layer on the substrate body is overlapped with the orthographic projection of the first metal wireon the substrate body, and the orthographic projection of the second flat layer on the substrate body covers the orthographic projection of the first metal wire on the substrate body. According to the technical scheme, the structure that the second flat layer wraps the first metal wire is arranged at the position where the first metal wire and the second metal layer are overlapped, and thereforepoor short circuit between the first metal wire and the second metal layer can be effectively avoided.

The invention discloses a special gel for preparing gel battery. The special gel is composed of the following components (by weight percentage): SiO2 5% to 20%, a stabilizing agent 0.5% to 5%, Na2SO4 3% to 10%, SnSO4 0.2% to 2%, Bi2O3 0.2% to 5% and deionized water in balancing amount. The special gel for the gel battery can effectively prevent layering of sulfuric acid, so as to reduce the acid addition difficulty, reduce the production time, improve the charge acceptance, prolong the service life of electrode plates, and obviate thermal runaway during use of the gel battery in the prior art.

The invention discloses a vertical pulse type electric vibrating and screening machine and a use method thereof. The vertical pulse type electric vibrating and screening machine comprises a supporting frame, a square fixing frame, a vertical pulse driving device and a vibrating and screening device. The square fixing frame is arranged in the supporting frame and fixedly connected with the supporting frame through a plurality of elastic parts. A vertical rack is arranged on the top of the square fixing frame, an incomplete gear engaged with the rack is arranged on the upper portion of the supporting frame, and the incomplete gear, the rack and the elastic parts form the vertical pulse driving device together. The vibrating and screening device and the square fixing frame form an integrated structure and perform periodic vertical pulse movement under the action of the vertical pulse driving device. By the adoption of the structure and the method, screening and vibrating functions can be achieved at the same time, a screen can be prevented from being blocked, and the efficiency of the screen is improved; vibrated samples can be quickly and fully mixed, so that the vibrating efficiency is improved; multiple screening functions can also be achieved through combination of different screens, so that the screening or vibrating effect is improved.

The invention provides a manufacturing process for a non-diaphragm lithium ion cell. The manufacturing process comprises the steps of coating the surface of a positive plate and/or negative plate with ceramic powder slurry; and then assembling the positive plate and the negative plate into a cell. According to the manufacturing process, the surface of the positive plate or negative plate is coated with the ceramic powder slurry; and then the positive plate and the negative plate are assembled, so that the existing diaphragm is omitted, the mechanical strength in assembling the positive plate and the negative plate is improved, the phenomenon of battery expansion and explosion caused by puncture in use of the common diaphragm is avoided, and a short-circuit phenomenon is effectively prevented; and furthermore, the non-diaphragm lithium ion cell has microporous omni-directional property, so that the requirements of electronic insulation and ionic conduction characteristic between the positive plate and the negative plate are satisfied. The invention also designs a battery applying the process.

Disclosed is a printed wiring board wherein a solder resist layer is formed on the surface of a wiring board which is provided with a conductor circuit, a part of the conductor circuit exposed from an opening formed in the solder resist layer is formed into a conductor pad, a solder bump is formed on the conductor pad, an electronic component is mounted on the board via the solder bump, and the electronic component is sealed with an underfill resin. In this printed wiring board, the surface of the solder resist layer is planarized at least in the electronic component mounting region or the planarized surface is further subjected to a roughening treatment. Also disclosed is a method for manufacturing such a printed wiring board

An electrical connector for soldering to a printed circuit board includes an insulative housing, a number of conductive terminals affixed to the insulative housing, and a metal shell surrounding the base portion. The insulative housing includes a base portion. Each conductive terminal includes a soldering portion extending laterally and outwardly from a lateral edge of the base portion. The metal shell includes a pair of longitudinal wall. The electrical connector includes an isolation block isolating the soldering portion from the longitudinal wall of the metal shell in a vertical direction.

The invention discloses an auxiliary welding device for components of a PCBA. The auxiliary welding device for the components of the PCBA is used for positioning the components of the PCBA on a PCB and comprises a base, a supporting base installed on the base, a welding positioning block, an insertion positioning block, a PCB positioning plate and an upper fixing cover plate. The welding positioning block and the insertion positioning block are installed on the supporting base and are oppositely arranged in a spaced mode, and the supporting base is arranged between the welding positioning block and the insertion positioning block. The PCB positioning plate is connected with the supporting base in a rotary mode through a rotary shaft, and a hollowed-out part used for exposing the welding portion of the PCB is arranged on the PCB. The upper fixing cover plate is movably connected with the PCB positioning plate. A positioning structure used for positioning the components of the PCBA is arranged on the surface, opposite to the PCB positioning plate, of the upper fixing cover plate. The upper fixing cover plate rotates around the rotary shaft along with the PCB positioning plate and can be selectively overturned onto one of the welding positioning block and the insertion positioning block. The auxiliary welding device for the components of the PCBA has the advantages that the welding quality of the components of the PCBA can be improved, welding efficiency is high, the welding cost can be lowered and labor intensity can be relieved.

The invention discloses a Li-SOCl2 battery and a power supply control circuit thereof and relates to the technical field of the safety of batteries. By the Li-SOCl2 battery, the problems of overheating, overdischarging and short circuit of the conventional Li-SOCl2 battery which realizes high-current discharging current density are solved. A shell of the Li-SOCl2 battery is a sealed shell; a plurality of Li-SOCl2 monomer batteries are fixed in the shell in a matrix arrangement manner; electrodes of all the Li-SOCl2 monomer batteries face the same direction; a plurality of output ends of the plurality of Li-SOCl2 monomer batteries which are connected in series with one another are connected to an output interface on the top of the shell; heat conduction silicone grease is filled between every two adjacent Li-SOCl2 monomer batteries and between each Li-SOCl2 monomer battery and the side wall of the shell; a thermistor is fixed between every two adjacent Li-SOCl2 monomer batteries; the thermistors are immersed in the heat conduction silicone grease; the signal output end of each thermistor is connected to the output interface.

A metallic oxide semiconductor thin film transistor comprises a grid electrode, a grid electrode insulating layer and a metallic oxide semiconductor layer. The grid electrode insulating layer is located between the grid electrode and the metallic oxide semiconductor layer. The grid electrode insulating layer comprises a silicon oxynitride layer and a silicon oxide layer. The silicon oxynitride layer is located between the grid electrode and the silicon oxide layer. The silicon oxide layer is located between the silicon oxynitride layer and the metallic oxide semiconductor layer. The silicon oxide layer is provided with a first surface making contact with the silicon oxynitride layer and a second surface making contact with the metallic oxide semiconductor layer. The density of oxygen atoms, close to the second surface, of the silicon oxide layer is larger than the density of oxygen atoms, close to the first surface, of the silicon oxide layer. According to the metallic oxide semiconductor thin film transistor, the process time is shortened, the problem that a glass substrate can be easily broken due to the excessively large film forming stress is effectively solved at the same time, and the metallic oxide semiconductor thin film transistor is beneficial for reducing influences of the grid electrode insulating layer on the oxygen content in the metallic oxide semiconductor layer.