88results about How to "Reduces the possibility of short circuits" patented technology

The invention discloses a preparation method of a high-density garnet all-solid electrolyte under low temperature and an application of the high-density garnet all-solid electrolyte. The method comprises the following steps: 1) adding raw materials to a ball milling tank according to the stoichiometric ratio of LLZO, adding isopropanol as a grinding aid and carrying out ball milling and drying; 2)compacting the dried powders in a corundum porcelain boat, and then, carrying out heating and roasting to prepare LLZO precursor powders; 3) further milling a part of the LLZO precursor powders through high-energy ball milling; 4) mixing and pressing the LLZO precursor powders and the LLZO precursor powders obtained after high-energy ball milling into a sheet to obtain an electrolyte sheet; and 5) placing the electrolyte sheet into the corundum porcelain boat for powder embedded sintering to obtain a high-purity LLZO electrolyte sheet. Compared with other solid state sintering methods, the method is lower in sintering temperature and sheet compressing pressure of the garnet electrolyte sheet, thereby reducing production cost of the garnet electrolyte.

The invention provides a grid stack structure and a method for manufacturing the grid stack structure. The grid stack structure comprises an isolation medium layer, wherein the isolation medium layer is formed on a grid and embedded into the grid; a side wall is used for covering the opposite side surfaces of the isolation medium layer; and the isolation medium layer positioned on an active region is thicker than the isolation medium layer positioned on a connecting region. The method for manufacturing the grid stack structure comprises the following steps of: eliminating a part of thickness of the grid, wherein the eliminated thickness of the grid on the active region is greater than the thickness of the grid on the connecting region so as to expose the opposite inner walls in the side wall; and forming the isolation medium layer on the grid, wherein the isolation medium layer covers the exposed inner walls. The invention also provides a semiconductor and a manufacturing method thereof. By the invention, the probability that a short circuit is formed between the grid and a second contact hole can be reduced; and process compatibility can be formed between a first contact hole and the second contact hole.

An enhancement-depletion-mode inverter includes a load transistor and a drive transistor. The load transistor has a top gate architecture with a first source, a first drain, a load channel region, a first semiconductor layer, and a first gate electrode. A load gate dielectric is in the load channel region, and has a load dielectric thickness. The load transistor is configured to operate in a depletion mode. The drive transistor has a bottom gate architecture with a second source, a second drain, a drive channel region, a second semiconductor layer, and a second gate electrode. A drive gate dielectric is in the drive channel region, and has a drive dielectric thickness that is different from the load dielectric thickness. The drive transistor is configured to operate in a normal mode or an enhancement mode. The first source is electrically connected to the second drain and the first gate.

The invention relates to a cylindrical battery cell, a battery, an electric device, a manufacturing method and a manufacturing system. The cylindrical battery cell includes a shell having an opening and an electrode assembly. The electrode assembly is arranged in the shell, the electrode assembly comprises a diaphragm and a tab, in the axial direction of the electrode assembly, the tab is locatedat one end of the electrode assembly and extends towards the opening, the tab comprises a first part and a second part, the second part surrounds the periphery of the first part, and the diaphragm wraps the second part to isolate the second part from the shell; in the axial direction, the first part exceeds the second part and the diaphragm, and the second part does not exceed the diaphragm. The battery cell provided by the invention aims to solve the technical problem of short circuit of the battery cell.

The invention belongs to the technical field of lithium ion batteries, and particularly relates to a novel adjustable SOC symmetric battery and a preparation method thereof. The symmetric battery comprises working electrodes, a counter electrode, an isolating membrane, an electrolyte and a packaging shell, and the working electrode, the counter electrode, the isolating membrane and the electrolyteare packaged in the packaging shell; wherein the working electrodes are two same-polarity electrodes, and a first tab is arranged on one side of each working electrode; the counter electrode is a metal lithium sheet, a second tab is arranged on one side of the counter electrode, and the first tab and the second tab are oppositely arranged; two side surfaces of each working electrode are providedwith at least one layer of isolating membrane, and two side surfaces of the counter electrode are provided with at least one layer of isolating membrane. According to a symmetric battery, the SOC of the working electrode can be adjusted in real time according to actual requirements; according to the preparation method, the situation that the performance of the lithium battery is reduced due to pole piece damage, pole piece resistance increase and the like can be eliminated, so that the impedance performance of the positive and negative electrode materials of the lithium battery to-be-tested under different SOCs can be evaluated more accurately and efficiently, and more comprehensive basic evaluation data can be obtained.

The invention provides a coil electric conductor device and a manufacture method thereof. The method comprises the following steps of: a lower leading-out end step, a coil conductor step, a casting step and an upper leading-out end step, wherein the coil conductor step comprises a connection point step: printing a coil conductor, wherein cavities can be generated at the tip position of a lower leading-out end and the middle position of the tip position of the coil conductor if the thickness of the tip position of the coil conductor is less than that of the middle part of the coil conductor; drying again; printing first connection points at the positions of the cavities; then casting a layer of ferrite pulp film; and printing second connection points the area of which is larger than that of the first connection points on the first connection points after the ferrite pulp film is dried; in the casting step, casting a layer of ferrite pulp film, and exposing the second connection points out of the ferrite pulp film; drying, and then repeating the coil conductor step, the connection point step and the casting step on the ferrite pulp film for several times so as to form the coil conductor.

A panel having touch function is disclosed. The panel includes a plurality of films, a plurality of touch electrodes arranged on different film layers, a plurality of leading wires respectively corresponding to the touch electrodes, and a touch chip. The leading wires electrically connect the touch electrodes to the touch chip, wherein the leading wires connecting a portion of the touch electrodes are arranged on a first film layer of the film layers and the leading wires connecting other portions of the touch electrodes are arranged on a second film layer of the film layers. In addition, a display device is also disclosed. In this way, the short circuit is avoided, and the possibility of failed touch electrode is also reduced.

The invention provides a polar plate for a polar plate for a battery, a manufacturing method of the polar plate, a polar plate group with the polar plates and a lead storage battery. The polar plate comprises a current collector and a active substance layer kept by the current collector, wherein the current collector is an expanded grid manufactured with a cutting and drawing method, the polar plate is composed of two protruding end parts with protrusions and a flat middle part between the two end parts, the thickness of each end part is more than that of the middle part, and when the thickness of the middle part is set to be H2 and the height difference between each end part and the middle part is H1, the ratio of H1/H2 is 3-9%. According to the invention, by means of designing the polar plate to be provided with protrusions at the end parts to form the protruding end parts with the protrusions and making the thickness of each end part of the polar plate more than that of other parts of the polar plate, a distance between a positive polar plate and a negative polar plate is properly enlarged, so that the cycle life, capacity and charging efficiency of the battery are greatly increased.

The invention provides a shielding film, a flexible circuit board component and a mobile terminal. The shielding film comprises an insulating layer, a conductive layer and a conductive adhesion layer;the insulating layer, the conductive layer and the conductive adhesion layer are sequentially stacked; and the insulating layer at least wraps the side surface of the conductive layer. By adopting the shielding film provided by the invention, as the insulating layer at least wraps the side surface of the conductive layer, i.e. the side surface of the conductive layer is not exposed any more, thepossibility of short circuits of the shielding film and other devices can be reduced.

The invention relates to a pre-charging apparatus used for a voltage source converter and with a line fault detection function. The pre-charging apparatus is characterized by comprising a pre-charging contactor K, a voltage-boosting transformer T, a current-limiting resistor R, a high-voltage-resistant rectifying bridge D, a direct current voltage sensor LEMU and a main control panel CPU. By integrating the pre-charging function and the line fault detection function of the voltage source converter, the pre-charging function and the line fault detection function can be obtained at the same time.

The invention discloses a method for embedding a flat copper wire by using a split stator core. The method comprises the following steps of: bending and forming the flat copper wire to form a hairpintype flat copper wire; sequentially inserting the welding ends of a plurality of hairpin type flat copper wires into the wire inserting holes of the base tool; arranging a winding on a base tool whileinserting tool sectioning structures into the arranged winding, and completing pre-arrangement of the winding when a plurality of tool sectioning structures are spliced into a full-circle tool sectioning above the base tool; inserting all the stator sectioning structures into a pre-arranged winding according to a mode of taking down one tool sectioning structure and then inserting one stator sectioning structure, and splicing the stator sectioning structures into a whole-circle stator sectioning of an embedded wire after the stator sectioning structures are inserted into the pre-arranged winding. According to the invention, the winding is inserted into the stator iron core after the whole forming process is completed, so that the flat copper wire is prevented from being formed in the stator iron core, the possibility of short circuit between the stator iron core and the winding is reduced, the percent of pass of the coil inserting stator can be improved, and the material cost is reduced.

The invention discloses an external motor power conversion circuit of a permanent magnet reluctance type double rotor motor. The external motor power conversion circuit comprises a power supply, three-phase windings of a stator, and four parallel bridge arms. The upper end of each bridge arm is connected with a positive output end of the power supply, and the lower end is connected with a negative output end of the power supply. Each bridge arm is formed by connecting two switching tubes in series, and the two switching tubes are each connected with a power diode in parallel in the reverse direction. With regard to two adjacent bridge arms, and a phase of windings of the stator is connected in series between an emitter of the switching tube at the upper half bridge arm of one bridge arm and a collector of the switching tube at the lower half bridge arm of the other bridge arm. The external motor power conversion circuit designed for the special structure of an external motor of the permanent magnet reluctance type double rotor motor can guarantee the efficient operation of the external motor of the permanent magnet reluctance type double rotor motor, reduces the use of switching devices, improves the control performance of the external motor of the permanent magnet reluctance type double rotor motor, reduces operation cost, and promotes the application of the permanent magnet reluctance type double rotor motor.

A connector module is provided with first and second bus bars which are respectively formed by a metal plate, a control board on which an electronic component is mounted, and case member which is formed by insulative resin and houses the control board therein. Connector parts to be connected with respective counterpart connectors are integrally formed with the case member.

A light emitting diode display device includes a display board comprising a plurality of unit pixels, a drive circuit board including a plurality of drive circuit regions corresponding to the plurality of unit pixels, and a plurality of bumps interposed between the plurality of unit pixels and the plurality of drive circuit regions. The plurality of unit pixels comprises a first unit pixel including a first P electrode. The plurality of drive circuit regions comprises a first drive circuit region corresponding to the first unit pixel and a first pad connected to a first drive transistor, the plurality of bumps includes a first solder in contact with the first pad, and a first bump on the first solder and including a first filler in contact with the first P electrode, the first solder includes at least one of tin and silver, and the first filler includes copper or nickel.

The invention relates to a board terminal and a printed circuit board provided with board terminal. The board terminal has a flat-plate shaped connection portion to be connected to an electric component at one end and an insertion portion to be inserted in and soldered to a through-hole of a printed circuit board at the other end and is formed in a crank shape by being provided with a support plate portion protruding in a plate thickness direction of the connection portion between the connection portion and the insertion portion. Also, the insertion portion is formed in a location on only one side in a width direction of the support plate portion.