144results about How to "Will not cause short circuit" patented technology

The invention discloses an electrical insulating phase-change heat conducting material and a preparation method thereof. The electrical insulating phase-change heat conducting material is prepared from 4-12% of two-component molding liquid silicone rubber, 10-30% of paraffin-acrylic phase change microcapsules, 50-70% of heat-conducting powder, 1-2% of silane coupling agent, and 10-25% of ethenyl terminated silicon oil. The electrical insulating phase-change heat conducting material disclosed by the invention is high in heat conductivity coefficient, low in heat resistance, and good in electrical insulating property, is in a solid state at room temperature, can be conveniently attached to the surface of a cooling fin or an electronic component; the electrical insulating phase-change heat conducting material is subjected to phase change to become soft (but not become liquid) when the working temperature of the component is achieved, the electrical insulating phase-change heat conducting material plays an electric insulating effect when the contact thermal resistance is reduced and the heat-conducting property is improved, a short circuit of the electric component is not caused, and the safety and the reliability of the electronic component are improved.

The invention discloses a reformer of methanol-water hydrogen manufacturing equipment, and a manufacturing technology of reformer, relating to the technical field of methanol-water hydrogen manufacturing equipment. The reformer of the methanol-water hydrogen manufacturing equipment comprises a reformer shell, wherein the reformer shell sequentially comprises a stainless steel inner shell, an insulating cotton layer and a mica outer shell from inside to outside, the diameter-thickness ratio of the reformer shell to the stainless steel inner shell is (150:0.8)-(150:2.5), the diameter-thickness ratio of the reformer shell to the insulating cotton layer is (150:10)-(150:20), and the diameter-thickness ratio of the reformer shell to the mica shell is (150:1.5)-(150:3.5). The reformer not only is high-temperature-resistant and high in strength, but also is good in insulating property, corrosion-resistant, oxidization-resistant, waterproof, non-conductive, and light in weight.

A conductive fabric, a fabric circuit and a method for forming the same are provided. The fabric circuit comprises at least one electronic component and conductive fabric. The conductive fabric comprises a first layer and a second layer. The first layer has at least one first conductive thread and a plurality of first non-conductive threads. The at least one first conductive thread is woven within the plurality of first non-conductive threads. The second layer has at least one second conductive thread and a plurality of second non-conductive threads. The at least one second conductive thread is woven within the plurality of second non-conductive threads. The first layer is woven with the second layer and insulated from the second layer so that an electronic component can be attached to and electrically connect to the at least one first conductive thread of the first layer and the at least one second conductive thread of the second layer.

The invention relates to a manufacturing method of a laminated type ceramic electronic element, sequentially comprising the following steps at an integral forming stage: (1) carrying out tape casting to form ceramic raw sheets; (2) arranging through holes; (3) filling slurry into the through holes; (4) printing electrodes; (5) laminating and pressing; and (6) carrying out isostatic pressing processing. The manufacturing method of the laminated type ceramic electronic element is characterized in that the step (3) of filling the slurry into the through holes is to fill conductive slurry into the through holes of the ceramic raw sheets in a screen printing manner and a reverse hole-filing manner; and the reverse hole-filing manner is to fill the conductive slurry into the through holes along a printing scraper downwards to be processed by a silk screen, a load-bearing sheet, the ceramic raw sheets and a printing supporting table plate sequentially. By adopting the reverse hole-filing manner in the manufacturing method, the stray capacitance brought about by the redundant electrodes can be effectively eliminated; and besides, the short circuit among the through holes cannot be caused when the through holes have a large number and small intervals on a same layer of the ceramic raw sheets. The manufacturing method provided by the invention can be widely used for manufacturing the laminated type ceramic electronic element made of ferrite ceramics, alumina glass ceramics, manganese-cobalt-nickel ceramics and zinc oxide ceramics.

The invention provides an electric connector. A male head can be inserted into the electric connector in two directions, wherein the male head is provided with an insulation seat body and a metal shell; the metal shell is coated on the insulation seat body; and a sleeving space is formed between the metal shell and the insulation seat body. The electric connector comprises a plastic base, a tongue piece, a connection groove and two rows of first contacts; the tongue piece is protruded at the front end of the plastic base; the connection groove is arranged at the front end of the plastic base and the tongue piece is wrapped in the connection groove; when the male head is inserted into the connection groove for positioning, the tongue piece is sleeved into the sleeving space; the first contacts are respectively exposed out of two surfaces of the tongue piece; and each first contact is electrically connected with a pin which extends out of the plastic base. The electric connector is characterized in that: the male head can be inserted into the space, on the two surfaces of the tongue piece, of the connection groove in forward and reverse directions; and when the male head is inserted into the connection groove for positioning, the metal shell of the male head is not contacted with the first contacts.

The invention relates to a battery cooling method and a battery cooling device, in particular to liquid-nitrogen cooling method and device for an automotive power battery pack. The liquid-nitrogen cooling method for the automotive power battery pack includes directly releasing liquid nitrogen to the surface of the power battery pack and a casing of each battery cell to convert the liquid nitrogen into gas nitrogen, and cooling the surface of the power battery pack and the casing of each battery cell by absorbing a substantial amount of heat in process of converting the liquid nitrogen from liquid into gas. The liquid-nitrogen cooling device for the automotive power battery pack comprises a liquid nitrogen tank (1), a cooling container (8), a connecting pipeline (19), a cooling passage (20), a nitrogen exhaust port (9) and the like. The liquid nitrogen tank (1) is communicated with the cooling passage (20) arranged in the cooling container (8) through the connecting pipeline (19). The liquid-nitrogen cooling method and device for the automotive power battery pack are good in cooling effect, free of consumption of electric energy of the power battery pack, environment-friendly and energy-saving. The cooling method is simple and easy to implement. The cooling device is small in size, the structure is simple and stable, noise and vibration can be avoided, cooling stability is good, and safety is high.

The invention relates to a garbage incinerator, in particular to a rotating dual-roller incinerator. The flue gas residual heat is used as a heating source of garbage drying. The natural air is used as the combustion improver for garbage burning. The consumption plan that the flying ash is used for absorbing dioxin and heavy metal and substituting the auxiliary fuel for combustion supporting and the absorbent is input to purify the glue gas is adopted. The methods of active prevention and the decomposition and elimination of the organic pollutant substitute the passive preventive measures after the generation of the pollutants. The rotating dual-roller incinerator enables the garbage burning and treatment to save resources and overcome the secondary pollution, realizes the coexistence of environment protection and economy, and achieves the dual purposes of energy saving and environment protection.

The invention discloses a tray, a tray assembly, a battery pack assembly and a vehicle. The tray comprises a bottom plate and a frame, wherein the bottom plate comprises a plurality of sub bottom plates, runners are arranged in at least one part of sub bottom plates in the plurality of sub bottom plates, a battery module is suitably arranged on the sub bottom plates provided with the runners, and the frame is arranged at a peripheral edge of the bottom plate. By the tray, the volume requirement of a cavity for accommodating the battery module can be reduced, the runner arrangement is simpler, a water-cooling mode and an air-cooling mode can be simultaneously compatible, particularly in the water-cooling mode, a cooling liquid can directly flows outwards even the cooling liquid is leaked, short circuit of the battery module is prevented, the battery module is safer to use, and a relatively good protection effect can be played on the battery module.

The invention discloses an ANPC type three-level inverter modulation method, and belongs to the technical field of electric power and electronics. The modulation method comprises the following steps:1, in the positive half cycle of a modulation voltage U<o>, when the output voltage is changed from +U<dc> / 2 to 0, two switching state changing moments of t<1> and t<2> pass by; at the t<1> moment, aT<2> tube is switched off, and at the t<2> moment, a T<3> tube is switched on; when the output voltage is changed from 0 to +U<dc> / 2, two switching state changing moments of t<3> and t<4> pass by; atthe t<3> moment, the T<3> tube is switched off, and at the t<4> moment, the T<2> tube is switched on; in the negative half cycle of the modulation voltage U<o>, the modulation method is correspondingto the abovementioned method; and 2, when the modulation voltage U<o> is in transition from the positive half cycle to the negative half cycle, four switching state changing moments of t<5>, t<6>, t<7> and t<8> pass by; at the zero-crossing point t<5> moment when the modulation voltage U<o> is changed from the positive half cycle to the negative half cycle, a T<1> tube is switched off; at the t<6>moment, T<2> and T<5> tubes are switched on; at the t<7> moment, T<3> and T<6> tubes are switched off; at the t<8> moment, the T<4> tube is switched on; and when the modulation voltage U<o> is in transition from the negative half cycle to the positive half cycle, the modulation method is corresponding to the abovementioned method. By virtue of the method provided by the invention, the problem ofbus capacitor short circuit in current conversion can be overcome; and in addition, a long current conversion circuit can be avoided in a position close to the zero crossing point of the modulation wave U<o>, so that the method has certain engineering practical value.

The invention discloses a liquid crystal panel and a liquid crystal display device. The liquid crystal panel comprises a colorful film substrate, an array substrate and an insulating layer, wherein the colorful film substrate and the array substrate are connected to each other by a sealed frame gluing box doped with golden balls; a grid electrode shifting register is arranged on a surface, which faces the colorful film substrate, of the array substrate; a conductive electrode which is connected with a grid electrode, a source electrode and a drain electrode is arranged in an area of the grid electrode shifting register; a common electrode is arranged on a surface, which faces the array substrate, of the colorful film substrate; the insulating layer is positioned between the conductive electrode and the common electrode; a projection of the insulating layer in a surface, which faces the colorful film substrate, of the array substrate covers a projection of the conductive electrode in a surface, which faces the colorful film substrate, of the array substrate. By the technical scheme, the design on a narrow frame of the liquid crystal panel can be realized.

The invention discloses a reconfigurable substrate integrated waveguide bandpass filter and a reconfigurable method of the filter and mainly solves technical problems that the tuning range is small, the insertion loss of reconfigurable substrate integrated waveguide bandpass filters is high and control voltage of variable capacitance diodes cannot be directly applied to substrate integrated waveguides. One variable capacitance diode is placed in a non-metal via hole formed in the center of each of two complementary split-ring resonators of the bandpass filter, the metal part at an inner ring opening of each complementary split-ring resonator is replaced with a blocking capacitor, so that a substrate integrated waveguide is separated from an outer circuit, and a voltage source is prevented from being short-circuited; the variable capacitance diodes are connected with a direct-current bias circuit, reversed bias voltage at two ends of the variable capacitance diodes is adjusted, junction capacity of the variable capacitance diodes is changed, so that the resonant frequency of the two complementary split-ring resonators is affected, and the passband center frequency is reconfigurable. The feeding manner of the variable capacitance diodes in the substrate integrated waveguide is realized, the control manner is simple and easy to implement, the frequency tuning range is relatively large, the in-band insertion loss is low, and the filter can be applied to a wireless communication system.

The invention relates to a preparation method of a safe high-rate and all-solid-state battery. The method comprises the following steps: (1) pressing a negative current collector, a negative material, a solid electrolyte, a composite positive electrode and a positive current collector into a whole in a battery pressing mold from bottom to top in a dry environment to form the all-solid-state battery before liquid injection; (2) injecting a liquid electrolyte solution into the all-solid-state battery before liquid injection prepared in the step (1) in a vacuum environment; and (3) carrying out aerating treatment on the vacuum environment into which an ionic liquid is injected in the step (2) to prepare the safe high-rate and all-solid-state battery. The trace electrolyte is injected into the all-solid-state battery molded in a cold-press manner in the dry environment and is subjected to aerating treatment, so that the electrolyte is evenly dispersed into the all-solid-state battery. The trace electrolyte does not react with a solid electrolyte material and has good lithium-ion conduction ability, so that the contact resistance between the internal materials of the all-solid-state battery is reduced by the electrolyte as a transition electrolyte layer; and the high-current discharge capacity of the battery is greatly improved under the premise of ensuring the safety of the battery.

The invention provides a carbon composite material, a preparation method thereof and an application thereof. The carbon composite material is composed of soft carbon and hard carbon. When the carbon composite material provided by the invention is used as a negative electrode current collector of a secondary battery, the advantages of the soft carbon and the hard carbon can be complemented, electrochemically active substances can be uniformly embedded, adsorbed or deposited in the carbon composite material, the destruction of the structures of the carbon material and the short circuit of the battery do not occur, and at the same time, the performance of a metal secondary battery can be improved. The carbon composite material not only provides space for metal deposition but also provides a space or passage for metal ion insertion, adsorption and extraction, and the storage capacity and cycle life of the secondary battery are improved. When the carbon composite material provided by the present invention is used as the negative electrode current collector of the secondary battery, the change of the original assembly process of the battery is not needed.

A power supply device capable of preventing electric shock and short circuit comprises a power supply seat and a power supply plug, wherein the power supply plug is matched with the power supply seat, a sliding groove is formed in the power supply seat, a groove opening is formed in a front end of the sliding groove and communicates with the outside, fixed power supply grooves are horizontally and symmetrically formed in a rear end wall of the sliding groove, first power supply elastic sheets are arranged in the fixed power supply grooves, a sliding block is arranged in the sliding groove and can slide forwards and rearwards, a slot with an opening facing a front end is formed in a front end surface of the sliding block, first guide grooves are horizontally and symmetrically formed in the sliding block and are provided with openings facing the slot, second guide grooves are also horizontally and symmetrically formed in the sliding block and are provided with openings deviating from the slot, through grooves are formed between the first guide grooves and the second guide grooves, gears are rotatably arranged in the through grooves, gear rings of the gears are exposed out of the first guide grooves and the second guide grooves, extrusion and push arms are arranged in the first guide grooves in a sliding way, locking arms are arranged in the second guide grooves in a sliding way, and racks are arranged on end surfaces, opposite to each other, of the extrusion and push arms and the locking arms and are engaged with the gear rings of the gears.

The invention discloses a self-cleaning insecticidal lamp. The self-cleaning insecticidal lamp comprises a support, an insect trapping lamp, an electric shock net and a cleaning device. The support comprises a top disc, a base and a stand column, the top disc and the base are connected through the stand column, the insect trapping lamp is installed between the top disc and the base, the electric shock net is arranged between the stand column and the insect trapping lamp, and the electric shock net is parallel with the insect trapping lamp; the cleaning device comprises a controller, a motor, a driving wheel, a driven wheel, a screw rod and a cleaning brush, the controller, the motor, the driving wheel and the driven wheel are located on the top disc, a motor shaft of the motor is connected with the driving wheel, the driving wheel is matched with teeth of the driven gear, the driven gear is connected with the screw rod, the screw rod penetrates through a nut on the cleaning brush and matched with the nut, the screw rod is provided with an upper limiting switch at the upper end and provided with a lower limiting switch at the lower end, and the upper limiting switch, the lower limiting switch and the motor are electrically connected with the controller. The self-cleaning insecticidal lamp can automatically clean insect bodies adhering on the insecticidal lamp clearly without human assistance, short circuit of the positive electrode and the negative electrode of the electric shock net is prevented, and the service life of the insecticidal lamp is prolonged.

This invention relates to Li ioninc cells including a pole set and non-solution electrolyte sealed in a shell, and the pole includes a positive, a negative pole and ceramic membranes, which is stable under high temperature and safe.

The invention discloses an array substrate, a display panel and a display device. The array substrate comprises pixel circuits, wherein the pixel circuits are distributed in an array mode in a first direction and a second direction, each pixel circuit comprises a first semiconductor part, and each first semiconductor part comprises a first node and a second node; a first reference signal line extending in a first direction and electrically connected to the first node; a second reference signal line extending in the first direction and electrically connected to the second node; a first semiconductor part, in which the first node of one pixel circuit and the second node of the other pixel circuit of two adjacent pixel circuits in the second direction are connected through the second semiconductor part; and a control part, wherein the orthographic projection of the control part on the plane where the array substrate is located is at least partially overlapped with the orthographic projection of the second semiconductor part on the plane where the array substrate is located, and the control part and the second semiconductor part form a switch element. According to the embodiment of the invention, the characteristic consistency of the pixel circuit can be improved.

The invention discloses a storage battery voltage balancing device and belongs to intelligent charging and discharging control devices of storage battery packs for direct-current power sources in an electrical power system. A storage battery charging control circuit is connected with a single chip, a storage battery managing chip is connected with the single chip via an SPI (serial peripheral interface) bus. In a storage battery voltage acquisition circuit, a storage battery pack is formed by a plurality of storage batteries which are mutually serially connected, and a positive electrode of every storage battery in the storage battery pack is connected with the storage battery managing chip. In a storage battery discharging control circuit, the positive electrode of every storage battery is connected with a source electrode D of a P-type MOSFET (metal-oxide -semiconductor field effect transistor), and the negative electrode of every storage battery is connected with the storage battery managing chip. During discharging, only overcharged batteries are discharged; and during charging, only batteries with low capacities are charged. The storage battery voltage balancing device is small in size, low in noise, high in reliability and real-time in control.

The invention provides an LED (light emitting diode) flip chip which comprises a sapphire substrate, an N-shaped layer, a light emitting layer, a P-shaped layer, a reflecting layer, a first insulating layer, an N bonding pad layer and a P bonding pad layer, wherein the N-shaped layer, the light emitting layer, the P-shaped layer, the reflecting layer and the first insulating layer are arranged on the sapphire substrate in sequence from bottom to up; N leading wire electrodes and P leading wire electrodes are arranged on the first insulating layer; the N leading wire electrodes are conductively connected with the N-shaped layer; the P leading wire electrodes are in conductively connected with the reflecting layer; the N bonding pad layer is conductively connected with the N leading wire electrodes; the P bonding pad layer is conductively connected with the P leading wire electrodes; a second insulating layer is arranged on the N leading wire electrodes and the P leading wire electrodes; through holes are formed in the second insulating layer; and the N bonding pad layer and the P bonding pad layer are in contact with the N leading wire electrodes and the P leading wire electrodes through the through holes respectively. The LED flip chip and the manufacturing method thereof are beneficial to heat radiation of the LED flip chip, enable the LED flip chip to have a favorable insulating effect, and improve the stability of the LED flip chip.

The invention discloses an intelligent toilet pad. A heating plate is arranged above a toilet base; a clean sleeve is arranged above the heating plate; a control box 1 is arranged at the connection part of the toilet base and the toilet cover and is connected with an automatic clean sleeve replacing mechanism by a connecting piece; the control box is provided with a heating controller, a odor removal controller and a fragrance releasing controller; and an inductive switch is arranged above the control box. The intelligent toilet pad can realize full intellectualization, automatic heating at constant temperature, automatic replacement of the clean sleeve, automatic release of fragrance, and automatic odor removal and sterilization.

The invention provides a single battery being capable of resisting overloading and high-spinning and being high in capacity. A preparation method includes the steps of: successively tightly laminatinga nickel square-mesh net, a graphite sheet, positive powder, insulation powder, a negative pole sheet and a current collector; surrounding and compacting the outer rings of the insulation powder andthe negative pole sheet by a current blocking ring which is produced by mixing and pulping MgO and asbestos according to mass ratio of 2:1 and punching the mixture into a ring; the insulation powder is a mixture of LiCl-LiBr-LiF ternary eutectic substance and MgO according to the mass ratio of 1:1-1:1.5, wherein the mixture is compressed to form an insulation layer being 0.4-0.6 mm in thickness; the positive powder is a CoS2 / FeS2 mixture according to the mass ratio of 1:1, wherein the positive powder also contains insulation powder accounting for 15-18% by mass of the positive powder and lithium oxide accounting for 2-5% by mass of the positive powder. The single battery has strong anti-severe environment capability, can output stable voltage and is high in specific energy, and also satisfies the demand of resisting overloading and high-spinning and being long in service life.

The invention discloses a fabricating method of a GaN-based light-emitting component with a vertical structure, which includes the steps of: providing a temporary substrate, growing a GaN-based light emitting epitaxial layer on the substrate, wherein the GaN-based light emitting epitaxial layer includes, from bottom to top, an n-shaped layer, a light emitting layer and a p-shaped layer; forming an insulated region on the light emitting epitaxial layer, and passivating and insulating the light emitting epitaxial layer of the insulated region through an ion injection method; sequentially forming a metallic reflector and a metal bonding layer on the light emitting epitaxial layer; providing a conductive substrate and bonding the conductive substrate with the light emitting epitaxial layer on the temporary substrate; removing the temporary substrate to expose the surface of the light emitting epitaxial layer; forming cutting lines on the exposed surface of the light emitting epitaxial layer, wherein the cutting lines are located inside the insulated region; dividing the light emitting epitaxial layer into a series of units along the cutting lines by using a laser scriber; and cleaving the backside of the conductive substrate to form chip granules.

The invention discloses a capacitor based on a metallized film nano-evaporation technique and a preparation process of the capacitor, and belongs to the field of capacitors. The technical scheme is characterized in that the capacitor comprises a casing, a cover plate and a capacitor core, wherein the capacitor core comprises a metallized polypropylene film which is tightly attached to the outer surface of the capacitor core, and the metallized polypropylene film is of a double-layer and double-side structure; the upper part of the casing is fixedly connected with the cover plate, the capacitorcore is embedded in the casing, heat-shrinkable tubing is tightly attached to the inner wall of the casing, and an aluminum shell is connected in the heat-shrinkable tubing in a penetration manner. According to the capacitor based on the metallized film nano-evaporation technique and the preparation process of the capacitor, surge current resistance of the capacitor can be improved by the metallized polypropylene film, and contact loss is reduced, so that open circuit or substantially reduced capacity of the capacitor can be avoided.

The invention provides an LED flip chip. The LED flip chip comprises a sapphire substrate. An N type layer, a light emitting layer, a P type layer, a reflecting layer and a first insulating layer are sequentially arranged on the sapphire substrate from bottom to top. An N lead electrode and a P lead electrode are arranged on the first insulating layer, the N lead electrode extends from the P type layer to holes of the N type layer along the depth to be electrically connected with the N type layer, and the P lead electrode is electrically connected with the reflecting layer; the first insulating layer is further provided with an N bonding pad layer and a P bonding pad layer, wherein the N bonding pad layer is electrically connected with the N lead electrode, and the P bonding pad layer is electrically connected with the P lead electrode; second insulating layers are arranged on the N lead electrode and the P lead electrode, through holes are formed in the second insulating layers, the N bonding pad layer and the P bonding pad layer make contact with the N lead electrode and the P lead electrode respectively through the through holes, the first insulating layer or / and the second insulating layers are materials which do not absorb visible spectrums and have certain elasticity, and Young modulus of the materials ranges from 0.1GPa to 5GPa.

The invention discloses a uranium-bearing low-temperature molten salt system, a preparation method thereof and an application of the system to the field of electrolytic preparation of metallic uranium, and aims to solve the problems that in current spent fuel dry reprocessing, an LiCl-KCl-UCl3 molten salt system within the temperature range of 400-500 DEG C is usually adopted, uranium is refined by molten salt electrolysis to generate structurally loose dendritic metallic uranium, short circuit of an electrolytic tank is easily caused, and large-scale continuous production cannot be realized.The metallic uranium electrolytically prepared by the uranium-bearing low-temperature molten salt system is high in purity and compact in structure and in the shape of a nodule (but the metallic uranium prepared by the LiCl-KCl-UCl3 molten salt system is structurally loose and dendritic and has essential difference from the metallic uranium electrolytically prepared by the uranium-bearing low-temperature molten salt system), and the electrolytic refining process is safe and controllable, can be applied to development of industrial spent fuel dry reprocessing technology to meet the requirementsof Chinese industrial continuous production of high-purity metallic uranium, and has a good application prospect. Further, the uranium-bearing low-temperature molten salt system is simple in production process, low in equipment and experimental condition requirement, low in energy consumption and pollution, has a good application prospect and is worthy of large-scale popularization and application.

The invention provides a liquid crystal display panel and a preparation method thereof, the liquid crystal display panel comprises a first substrate, a second substrate, an insulating part, a fillingadhesive and a conductive part, the first substrate comprises a first substrate, a drive circuit layer and a pixel electrode, the first substrate is provided with a conduction electrode in a frame adhesive area, and the frame adhesive area is arranged around a display area; the second substrate is arranged opposite to the first substrate and comprises a second substrate, a black matrix and a common electrode; the insulating component is located in the frame glue area and covers the common electrode; the filling glue is arranged between the first substrate and the second substrate and is positioned in the frame glue area; the conductive part is arranged on the side surface of the liquid crystal display panel; two ends of the conductive part are respectively connected with the side surface of the common electrode and the side surface of the conduction electrode; the conduction electrode is connected with the common electrode on the side surface of the liquid crystal display panel, and the first substrate and the second substrate cannot be conducted through the filling glue in the frame glue area, so that short circuit is avoided.

The invention relates to a power battery module, and the battery module comprises a top ventilation pipeline and a plurality of single batteries, wherein the top of each single battery is provided with a top pressure release valve, the upper end of each top pressure release valve is connected with a safety valve, the top ventilation pipeline is arranged above the safety valve, and the upper end ofthe safety valve is communicated with a pipe cavity of the top ventilation pipeline; a sensing device and a cooling liquid spraying device are arranged in the top ventilation pipeline, the sensing device is connected with a control device, and the control device controls the cooling liquid spraying device to act. And when thermal runaway occurs, high-temperature flue gas generated in the single batteries rushes into a pipe cavity of the top ventilation pipeline. After the sensing device senses high-temperature and high-pressure smoke, a signal is sent to the control device, and the control device controls the cooling liquid spraying device to spray cooling liquid in the top ventilation pipeline. The cooling liquid flows into the thermal runaway single batteries, so that the thermal runaway single batteries are effectively cooled, the thermal runaway single batteries can be accurately controlled, the fire extinguishing effect is good, and the short circuit of the normal batteries cannot be caused.

A power supply device capable of preventing electric shock and short circuit comprises a power supply seat and a power supply plug, wherein the power supply plug is matched with the power supply seat, a sliding groove is formed in the power supply seat, a groove opening is formed in a front end of the sliding groove and communicates with the outside, fixed power supply grooves are horizontally and symmetrically formed in a rear end wall of the sliding groove, first power supply elastic sheets are arranged in the fixed power supply grooves, a sliding block is arranged in the sliding groove and can slide forwards and rearwards, a slot with an opening facing a front end is formed in a front end surface of the sliding block, first guide grooves are horizontally and symmetrically formed in the sliding block and are provided with openings facing the slot, second guide grooves are also horizontally and symmetrically formed in the sliding block and are provided with openings deviating from the slot, through grooves are formed between the first guide grooves and the second guide grooves, gears are rotatably arranged in the through grooves, gear rings of the gears are exposed out of the first guide grooves and the second guide grooves, extrusion and push arms are arranged in the first guide grooves in a sliding way, locking arms are arranged in the second guide grooves in a sliding way, and racks are arranged on end surfaces, opposite to each other, of the extrusion and push arms and the locking arms and are engaged with the gear rings of the gears.

A power supply device capable of preventing electric shock and short circuit comprises a power supply seat and a power supply plug, wherein the power supply plug is matched with the power supply seat, a sliding groove is formed in the power supply seat, a groove opening is formed in a front end of the sliding groove and communicates with the outside, fixed power supply grooves are horizontally and symmetrically formed in a rear end wall of the sliding groove, first power supply elastic sheets are arranged in the fixed power supply grooves, a sliding block is arranged in the sliding groove and can slide forwards and rearwards, a slot with an opening facing a front end is formed in a front end surface of the sliding block, first guide grooves are horizontally and symmetrically formed in the sliding block and are provided with openings facing the slot, second guide grooves are also horizontally and symmetrically formed in the sliding block and are provided with openings deviating from the slot, through grooves are formed between the first guide grooves and the second guide grooves, gears are rotatably arranged in the through grooves, gear rings of the gears are exposed out of the first guide grooves and the second guide grooves, extrusion and push arms are arranged in the first guide grooves in a sliding way, locking arms are arranged in the second guide grooves in a sliding way, and racks are arranged on end surfaces, opposite to each other, of the extrusion and push arms and the locking arms and are engaged with the gear rings of the gears.

This invention relates to a panel display with an umbrella grating array structure and its process technology, in which, the display includes a sealed vacuum cavity composed of a cathode panel, an anode panel and surrounding glasses, a photoetched anode conduction layer and a fluorescence powder layer on the conduction layer, a wall supporting structure and getter elements, in which, an umbrella grating array structure is prepared on the cathode panel and the control to electronic emission of the cathode is strengthened on the basis of fine field emission property of the cathode to reduce the working voltage of the device and increase its emission efficiency.