824results about How to "Facilitate conduction" patented technology

The invention provides a silicon-carbon composite material as well as a preparation method and application thereof. The silicon-carbon composite material comprises a porous carbon material; the silicon particles are distributed on the surface layer of the porous carbon material and in pore channels in the porous carbon material, the distribution concentration of the silicon particles in the surface layer of the porous carbon material is smaller than that of the silicon particles in the porous carbon material, and the particle size of the silicon particles in the surface layer of the porous carbon material is smaller than that of the silicon particles in the porous carbon material; the silicon dioxide layer is formed on the surface of the silicon particles; and the carbon coating layer is formed on the surface of the silicon dioxide layer. The lithium ion battery prepared by taking the silicon-carbon composite material as a positive electrode active material shows good electrochemical performance, and has relatively high specific capacity, good cycling stability and rate capability.

The invention discloses a graphene composite perovskite manganese oxide polycrystalline ceramic and a preparation method and application thereof, and belongs to the technical field of non-refrigeration high-sensitivity infrared detection. The chemical expression of the graphene composite perovskite manganese oxide polycrystalline ceramic is La < 0.81 > (Ca < 0.03 > Sr < 0.16 >) MnO3: Gy, G is graphene, y is the mass fraction of graphene in perovskite manganese oxide composite powder, and y is equal to 0.1-0.2%. The TCR value of the prepared polycrystalline ceramic can reach 30% or above, the Tk value is close to 300K, the polycrystalline ceramic has excellent adaptability to room temperature work and excellent sensitivity to temperature change, and when the polycrystalline ceramic is applied to an uncooled infrared detector, the detection precision of the uncooled infrared detector can be effectively improved.

The invention discloses a power management circuit based on programmable output reference voltage and a control method thereof. The circuit comprises a first power supply voltage input end (VCC) used for inputting a power supply; the NMOS tube (Q1) is used for controlling the output voltage (VOUT) according to the change of the reference voltage input end (INREF); the current-limiting resistor (R1) is connected in series with the source electrode of the NMOS tube (Q1) and is used for detecting output current; the base electrode of the triode (Q2) is connected to one end of the current-limiting resistor (R1), and when it is detected that the current exceeds a preset value, the triode (Q2) is conducted to reduce the reference voltage; the optical coupler (U1) is connected with an external control unit, the external control unit generates an over-current alarm signal by detecting the voltage on the current-limiting resistor, and the output of the power supply is turned off by controlling the reference voltage input end (INREF) to 0V, so that the circuit is protected.

The invention discloses a process for preparing a polyester fiber fabric by regenerating polyester waste bottle flakes, belongs to the technical field of polyester fiber fabric processing, and aims to solve the technical problem that the moisture absorption and quick drying performance, friction resistance and pilling resistance of the polyester fiber fabric in the prior art need to be further improved. The method comprises the following steps: adding polyester waste bottle flakes into a pulverizer, pulverizing, sieving with a 60-mesh sieve to obtain polyester regenerated powder, and pretreating the polyester regenerated powder to obtain pretreated polyester powder; composite polyester is prepared from modified polysiloxane enhanced copolyester containing nylon 6 and polyvinyl alcohol blocks, and then the porous composite polyester fiber is prepared by taking polyvinyl alcohol as a pore forming agent, so that the moisture absorption and quick drying performance of the polyester fiber fabric is effectively improved, the wearing experience of the polyester fiber fabric is enhanced, and the service life of the polyester fiber fabric is prolonged. The wear-resistant and anti-pilling performance of the polyester fiber fabric is also improved.

The invention discloses a driving permanent magnet synchronous motor with a heat dissipation mechanism, and relates to the technical field of 999. The outer side face of the rear end cover is fixedly connected with the inner side face of a base, a copper bar is embedded in the side, away from a shell, of the rear end cover, the inner side face of the rear end cover is fixedly connected with the surface of the copper bar, the side, away from the rear end cover, of the copper bar makes contact with the base, and the base is grounded; the air cooling assembly is fixedly connected with the end, close to the rear end cover, of the rotating shaft, the natural cooling assembly surrounds the outer portion of the shell, the inner side face of the natural cooling assembly is fixedly connected with the outer side face of the shell, the natural cooling assembly can increase the contact area with the outside, and the heat dissipation effect is enhanced. The rear end cover sucks air in the gap of the natural cooling assembly into the rear end cover to form flowing airflow, so that a better cooling effect is achieved, and the cooling effect of the air cooling assembly is radiated to the outside of the shell.

The invention relates to the technical field of cable materials, in particular to a flame-retardant silicone rubber cable sheath material and a preparation method thereof. The flame-retardant silicone rubber cable sheath material is prepared from the following raw materials in parts by mass: 50 to 55 parts of methyl vinyl silicone rubber, 5 to 7 parts of polydimethylsiloxane, 10 to 12 parts of a composite flame retardant, 18 to 23 parts of heat-conducting filler, 5 to 7 parts of modified glass fiber, 1 to 2 parts of a coupling agent, 1 to 1.2 parts of a vulcanizing agent, 2.5 to 3.5 parts of zinc oxide and 1 to 2 parts of stearate, the composite flame retardant is prepared by mixing modified ammonium polyphosphate and a nitrogen-boron-silicon flame retardant according to the mass part ratio of 2: 3. The flame-retardant silicone rubber cable sheath material prepared by the invention has good temperature resistance, good thermal conductivity, good flame retardance and excellent mechanical properties, and can meet the requirements of high-performance cables.

The invention provides a photovoltaic module with a self-cleaning anti-reflection coating and a radiation refrigeration coating, which comprises cover plate glass, back plate glass and a photovoltaic cell fixed between the cover plate glass and the back plate glass, a TiO2 / SiO2 anti-reflection film is arranged on the surface of the cover plate glass, and TiO2 is arranged on the top surface of the film layer and is directly contacted with air, so that on the basis of keeping the light transmittance of the film system, the radiation refrigeration coating can be directly contacted with the surface of the back plate glass; the surface of the TiO2 thin film has super-hydrophilic and oleophylic double affinity, so that a self-cleaning function is realized, and the power generation efficiency of the photovoltaic module is improved; a radiation refrigeration coating is arranged on the surface of the back plate glass, the temperature of air at the bottom of the coating can be reduced, heat in the cover plate glass and the battery piece can be conveniently conducted to the refrigeration piece and the cooling space, the temperature of the battery piece is reduced, and the power generation efficiency is further improved.

The invention discloses a totally-closed sintering mixing system pollutant zero-emission spiral conveying device, and relates to the technical field of spiral conveying devices.The totally-closed sintering mixing system pollutant zero-emission spiral conveying device comprises a first supporting frame, a driving motor is arranged in the first supporting frame, a first gear is arranged at the output end of the driving motor, and a feeding mechanism is arranged at the upper end of the first supporting frame; a second gear is arranged on one side of the feeding mechanism, and the outer surface of the second gear and the outer surface of the first gear are jointly sleeved with a conveying belt. Sintered mixed materials are compacted through the material extruding mechanism, raised dust generated by collision and friction of the materials is reduced, the compacted mixed materials are beneficial to improving the efficiency of the sintering process, and the compactly arranged particles can promote uniform distribution of heat and gas, so that the physical and chemical properties of sintered ore are improved, and the sintering efficiency is improved. And the compact sintering mixed material generates less chippings and dust in the treatment process, so that the cleaning work on equipment and the ground is reduced.

The invention discloses an effusion drainage device for the cardiovascular medicine department, and belongs to the technical field of effusion drainage. The effusion drainage device for the cardiovascular medicine department comprises a shell, a sliding rail is arranged at the bottom of the shell, a moving assembly is movably arranged in the shell and comprises a storage box in sliding fit with the sliding rail, and two partition plates are distributed on the storage box; the two partition plates divide the storage space of the storage box into three containing spaces used for sequentially storing the corresponding collecting tanks, gravity sensors making contact with the bottoms of the collecting tanks are arranged in the containing spaces, positioning assemblies movably matched with the collecting tanks are arranged in the shell, an opening and closing assembly is arranged at one end of the shell, and a supporting assembly is arranged at the bottom of one end of the shell. The lifting assembly is movably arranged in the shell and connected with the suction assembly, the switching assembly is arranged on the suction assembly, the adjusting assembly is arranged at one end of the shell, and the dust-proof drainage device has the advantages of effective dust prevention, orderly and stable drainage, flexible switching, automatic clamping and positioning, reliable structure, convenient operation, simplicity, convenience and practicability.

The invention relates to the technical field of positive electrode materials, and discloses a preparation method of a carbon-coated fluorine-doped sodium ferric sulfate positive electrode material, which comprises the following steps: step 1, adding an iron source, a sodium source, a sulfur source, a carbon source and a fluorine source into deionized water, and heating and stirring to completely dissolve the raw materials to obtain a solution A; 2, converting the solution A into precursor powder B by using a spray drying method; and 3, calcining the precursor powder B in an inert atmosphere, and crushing and grinding the obtained product to obtain the carbon-coated fluorine-doped Na2Fe2 (SO4) 3 positive electrode material. The F element with higher electronegativity than the S element is introduced, so that the overall electron distribution of the material is changed, the structural stability is improved, and the high-conductivity carbon protection layer is coated on the surface of the active material to form a conductive network, so that the resistance is reduced, the volume expansion is relieved, and the battery capacity and the cycling stability can be obviously improved.

The invention relates to the technical field of sodium ion battery positive electrode materials, in particular to a high-voltage positive electrode material, a preparation method thereof, a positive electrode plate and a sodium ion battery. The high-voltage positive electrode material comprises an O3-phase layered oxide matrix material and a coating layer coating the surface of the O3-phase layered oxide matrix material, the chemical formula of the O3-phase layered oxide base material is NaaNixAyMnpGqO2, A comprises a metal element with the valence of + 2 and / or + 3, and G comprises a metal element with the valence of + 4; and modification elements in the coating layer comprise at least one of Al, B, Ca, Co, Ce, La, Mg, Mo, Nb, Sr, Sn, W, Y, Zr, Zn, Bi and Ti. The material has reversible phase change under high voltage, can work under high voltage, and has excellent cycle performance.

The utility model relates to the technical field of building structure engineering, in particular to a steel beam column joint structure suitable for steel beams with different section heights. Comprising steel columns and steel beams. Each flange connecting piece comprises a first connecting part in bolted connection with a steel beam flange and a second connecting part in bolted connection with a steel column; the first connecting part and the second connecting part are vertically intersected to form a T-shaped bending component; the web connecting piece comprises a third connecting part in bolted connection with a steel beam web and a fourth connecting part in bolted connection with a steel column; the third connecting part and the fourth connecting part are vertically intersected to form a bent component; the corner connecting pieces are used for fixedly connecting the adjacent second connecting parts which are located on the different sides of the steel column and located at the different section heights into a whole in the horizontal direction. The steel beam column joint structure is good in overall stress, extremely high in stability and easy to install and assemble.

The invention discloses an organic carbonyl compound electrode material, a preparation method and application of the organic carbonyl compound electrode material in a lithium ion battery, and the organic carbonyl compound electrode material is bipyridino [3 ', 2': 5, 6; the invention relates to an organic carbonyl compound electrode material, which is prepared from 2, 2 ', 3': 7, 8] quinoxaline [2, 3-i] bipyridino [3, 2-a: 2 ', 3'-c] phenazine-10, 21-diquinone and 1, 2, 4, 5-tetraamino p-benzoquinone and 1, 10-phenanthroline-5, 6-diketone through a dehydration condensation reaction. When the organic electrode material is used as a positive electrode material to be applied to a lithium ion battery, due to the fact that the organic electrode material contains a large conjugated system, the organic electrode material has good dissolution inertness in electrolyte and is beneficial to electron transmission, and therefore the cycling stability and the rate performance of the battery are improved. In addition, multiple active sites provide more redox active sites to coordinate with lithium ions, so that reversible lithium storage is realized, and relatively high capacity is shown.

The invention discloses a composite positive electrode material applied to an all-solid-state lithium-sulfur battery. The composite positive electrode material comprises elemental sulfur as an active substance, and a high-temperature and high-ionic-conductivity sulfide solid electrolyte as an ionic conductive agent for conducting lithium ions; and the conductive carbon material is used as an electronic conductive agent for conducting electrons. The mass ratio of the elemental sulfur to the conductive carbon material to the sulfide solid electrolyte can be 1: 1: 2. The volume expansion of the active substance sulfur in the obtained composite positive electrode is small, the ion / electron path in the composite positive electrode is excellent, and the assembled all-solid-state battery is high in safety, good in cycle stability and high in energy density and power density.

The invention relates to the technical field of preparation of heat-conducting materials, in particular to a preparation method of a graphene metal heat-conducting gasket, which comprises the following specific steps: S1, pretreatment of graphene, S2, plasma treatment of graphene, S3, preparation of a metal substrate, S4, nano-particle deposition of the metal substrate, S5, compounding of graphene and the metal substrate, and S6, post-treatment. According to the method, the graphene is subjected to plasma treatment, and the nanoparticles are deposited on the surface of the metal substrate, so that the bonding strength of the graphene and the metal is greatly improved, the interface thermal resistance is effectively reduced, heat can be transferred between the graphene and the metal more smoothly, and the heat transfer efficiency is improved. The heat generated in the operation process of the electronic equipment can be conducted out more quickly, the problem of local overheating is effectively avoided, the stability and reliability of the equipment are greatly improved, and the service life of the equipment is prolonged.

The invention provides a preparation method of an HNT modified polymer composite membrane. The preparation method comprises the following steps: S1, preparing dealuminated HNT; s2, preparing modified HNT by using the dealuminated HNT; s3, preparing sulfonated polyether ether ketone; s4, performing ionization treatment on the sulfonated polyether ether ketone; and S5, preparing the HNT modified polymer composite membrane by using the modified HNT and the sulfonated polyetheretherketone or perfluorosulfonic acid membrane obtained in the step S4. The problems that an existing flow battery diaphragm is poor in comprehensive performance, high in cost and not suitable for various systems are solved.

The invention discloses a water-based binder for a lithium ion battery as well as a preparation method and application of the water-based binder. The binder is obtained by polymerizing raw materials comprising the following components: a) 20wt%-45wt% of at least one of olefinic bond type unsaturated carboxylic acid or olefinic bond type unsaturated carboxylic acid anhydride; b) 20 wt% to 45 wt% of an ethylenic bond type unsaturated nitrile monomer; c) 5 wt%-30 wt% of an ethylenic bond type unsaturated hydrophilic monomer which does not contain carboxyl; d) 10 wt% to 40 wt% of an ethylenic bond type unsaturated hydrophobic monomer; and e) 0.15 wt%-1 wt% of a crosslinking monomer. The binder provided by the invention is applied to the field of lithium ion batteries, and can improve the processing performance of a negative pole piece and the cycle performance of the battery.

The invention relates to the field of carbon-ceramic composite materials, in particular to a chopped carbon fiber reinforced carbon-ceramic composite material and a preparation method thereof.The chopped carbon fiber reinforced carbon-ceramic composite material is prepared from, by weight, 10-60 parts of chopped carbon fibers, 10-60 parts of silicon carbide powder, 10-60 parts of carbon powder, 10-60 parts of phenolic resin and 0.1-10 parts of graphene; the prepared carbon-ceramic composite material has good mechanical properties and excellent wear resistance, the densification process of the material is rapid and does not need to be repeatedly carried out, the time is saved, and the production efficiency is improved.

The invention relates to the field of laser equipment, and discloses a three-dimensional graphene structure heat dissipation lath amplifier, which comprises a base, a shading cover plate covering the base, and a lens and a light-transmitting panel arranged in the base, the lower end of the inner side of the base is communicated downwards through a plurality of air ports, the air ports are arranged in an inclined manner, and the light-transmitting panel is arranged on the shading cover plate. The lens comprises a supporting shell, a lens body and a heat conduction component, the supporting shell is arranged outside the lens body in a sleeving mode, the inclined arrangement of an air opening and the size difference of end openings increase the speed of air flowing, the uniformity of air flowing is improved, when an air compressor is started, the air opening can rapidly introduce cold air into the base, the cold air exchanges with hot air in the base, and therefore the heat conduction performance of the air compressor is improved. By means of the design, the temperature in the base is effectively reduced, and performance reduction and damage caused by long-time high-temperature work of the laser amplifier are avoided.

The invention relates to the technical field of plate electrodes, in particular to a plate electrode based on a polymer and a conductive micro-nano material and a preparation method of the plate electrode, the plate electrode comprises the polymer and the conductive micro-nano material, the polymer is one or two of a polymer plate and a polymer emulsion, and the particle size of the conductive micro-nano material is one or more of 40 nm to 10 [mu] m. According to the plate electrode based on the polymer and the conductive micro-nano material and the preparation method of the plate electrode, the plate electrode prepared from the conductive micro-nano materials with different particle sizes has relatively low surface resistivity and relatively high oxygen evolution potential, and can meet application requirements of specific places such as water treatment, electrochemical preparation of graphene and the like.

The invention discloses a valve body conduction method, which is realized through a valve body liquid control system, and comprises a one-way valve, a multi-way reversing valve, a pressure compensation valve, a first shuttle valve, a pressure reducing valve and a second shuttle valve, the method comprises the steps that the pressure reducing valve firstly gives a feedback signal, after the multi-way reversing valve is opened, hydraulic oil is supplied to the second shuttle valve through the pressure compensation valve and the first shuttle valve, and the feedback signal is obtained by comparing the oil pressure at the two ends of the second shuttle valve. The operation of the winch operating platform control system is more stable, the valve body can be better conducted, and oil is supplied to an execution element.

The invention discloses a vacuum brazing clamp and method for a water-cooled disc, and aims to overcome the defects that in the brazing process of the water-cooled disc, the clamping force of a tool on the water-cooled disc is not uniform, the temperature difference between the interior of a furnace and the water-cooled disc is large due to the fact that the tool absorbs much heat, and the brazing effect is affected. The water cooling disc comprises an upper tool pressing plate and a lower tool pressing plate which are connected together, the water cooling disc comprises a bottom disc and a cover plate, brazing filler metal pieces are loaded between the bottom disc and the cover plate, an upper heat insulation frame and a lower heat insulation frame are arranged between the upper tool pressing plate and the lower tool pressing plate, an upper thin plate is installed between the cover plate and the upper heat insulation frame, and a lower thin plate is installed between the bottom disc and the lower heat insulation frame. And the cold water plate is clamped between the upper thin plate and the lower thin plate. According to the vacuum brazing clamp for the water-cooling disc, the water-cooling disc brazing part can be prevented from being in direct contact with the tool plate, the heating and cooling effects of the brazing part in the brazing process are improved, and the uniformity of the pressure and the uniformity of the temperature during clamping of the brazing part are optimized.

The invention discloses a split type electric kettle capable of preventing explosion boiling. The split type electric kettle comprises an electric kettle main body, a base is arranged at the bottom of the electric kettle body, a connecting cover is rotationally connected to the top of the electric kettle body, a pressure relief assembly is arranged at the top of the connecting cover, a guide assembly is arranged in the electric kettle body and connected with the electric kettle body through multiple sets of connecting assemblies, and a cleaning assembly is arranged at the top of the guide assembly. The pressure relief assembly is used for conducting pressure relief treatment on the interior of the electric kettle body, the pressure relief assembly is composed of a connecting shell, a connecting pipe, a sleeve and an exhaust pipe, the connecting shell is fixedly connected to the top of the connecting cover, and the connecting pipe is fixedly connected to the interior of the connecting shell and extends into the electric kettle body. Through the design, the overall practicability of the split type electric kettle can be improved.

The invention belongs to the technical field of lithium battery aluminum plastic films, and particularly relates to a high-thermal-conductivity and high-deep-drawing-performance aluminum plastic film, a preparation method thereof and a lithium ion battery, the high-thermal-conductivity and high-deep-drawing-performance aluminum plastic film comprises a nylon film layer, an adhesive layer, an aluminum foil layer and a CPP film layer which are sequentially laminated and compounded from outside to inside; wherein the adhesive layer is prepared from an A component polyurethane glue and a B component polyurethane glue; the component A is prepared from the following components in parts by mass: 20 to 35 parts of polyester polyol, 15 to 25 parts of polyether polyol, 5 to 10 parts of polyisocyanate monomer, 1 to 5 parts of silane coupling agent, 1 to 5 parts of graphene oxide and 40 to 60 parts of solvent; the component B comprises the following components in parts by mass: 95-99 parts of a polyisocyanate curing agent and 1-5 parts of a solvent; the CPP film layer sequentially comprises a corona layer, a supporting layer and a heat sealing layer from the aluminum foil layer to the outside, and each of the corona layer, the supporting layer and the heat sealing layer contains BN inorganic particles; the crystal nucleation rate of the CPP film is changed by adding the high-thermal-conductivity material boron nitride inorganic particles into the material of the CPP film, and excellent deep drawing performance is obtained by matching with the graphene oxide in the adhesive layer.

The invention relates to an integrated negative electrode binder for a silicon-based negative electrode, a negative electrode plate and a lithium battery. Wherein the integrated negative electrode binder for the silicon-based negative electrode comprises a polymer and a conductive material; the polymer comprises a polyacrylic acid copolymer modified by a hydrophilic block and a hydrophobic block, the weight-average molecular weight of the polymer is 600,000-800,000, the number-average molecular weight of the polymer is 300,000-500,000, and the polydispersity of the polymer is 1.2-2.5. The silicon negative electrode has the advantages that the mechanical performance of the silicon negative electrode can be improved, the stress generated in the volume expansion of the silicon particles is dissipated, so that the silicon particles are prevented from being broken, and the adhesion to the conductive carbon material is good.

The utility model discloses an automobile battery pack liquid cooling plate, which is characterized in that a liquid cooling plate body is provided with an accommodating cavity used for installing an automobile battery pack, the side walls of two liquid cooling plate bodies on one side of the accommodating cavity are respectively provided with a first flow channel cavity, the two first flow channel cavities are communicated and connected, and the first flow channel cavities are filled with a cooling medium used for flowing cooling. A plurality of raised positioning parts are arranged on the inner wall of the accommodating cavity, a plurality of cooling towers are arranged in the positioning parts, the cooling towers are in through connection with the first flow channel cavity, a water diversion baffle sheet is inserted in each cooling tower, a groove part is formed in one side of each raised positioning part, and a heat-conducting silica gel sheet attached to the bottom surface of the accommodating cavity is arranged in each groove part; according to the utility model, the raised positioning part is arranged in the accommodating cavity to position the automobile battery pack, so that the stability of battery installation is improved; the flow channel cavity used for heat dissipation is formed, and heat generated during operation of the automobile battery is taken away by filling the flowing cooling medium, so that the working efficiency of the battery pack is improved, and the service life of the battery pack is prolonged.

The invention discloses a combined efficient environment-friendly energy-saving refrigerating unit, and relates to the technical field of refrigerating equipment. Comprising a machine body, the interior of the machine body is divided into an installation cavity and two symmetrically-arranged water storage cavities, a communication assembly is arranged between the two water storage cavities, a compressor is fixedly installed on the machine body, the output end of the compressor fixedly communicates with a discharge-in pipe, and the end, away from the compressor, of the discharge-in pipe fixedly communicates with a snake-shaped condensation pipe; one end, far away from the discharging pipe, of the snake-shaped condensation pipe is fixedly communicated with a liquid discharging pipe; an auxiliary assembly is arranged on the rear side face of the machine body, and heat of the S-shaped condensation pipe is rapidly dissipated through the auxiliary assembly. According to the refrigerating unit, through cooperative use of the communicating assembly and the auxiliary assembly, the functions of flowing of airflow and cooling liquid, dynamic adjustment of the positions of the cooling fins and automatic cleaning of the filter screen are achieved, the cooling efficiency and the refrigerating effect of the refrigerating unit are effectively improved, and meanwhile the service life of equipment is prolonged.

The utility model relates to an annular stator iron core, which comprises spliced iron cores, each spliced iron core is provided with a winding groove, one side of each spliced iron core is provided with a connecting part used for connecting the spliced iron cores on the adjacent side, and the other side of each spliced iron core is provided with a connecting groove used for connecting the spliced iron cores on the adjacent side. A first notch is formed in one side of the lower end face of the spliced iron core, and a first welding side edge is arranged in the first notch; a second notch is formed in the other side of the lower end face of the spliced iron core, and a second welding side edge is arranged in the second notch. Every two adjacent block iron cores are connected together in a meshed mode through the connecting parts and the connecting grooves, and a plurality of block iron cores are combined to form an annular stator iron core. The first notch and the second notch are closed to form a key groove, the first welding side edge and the second welding side edge are closed to form a welding part, and two adjacent spliced iron cores are fixed through welding. In conclusion, the welding part is arranged in the key groove, so that the effective space utilization is maximized.

The utility model discloses an ultrasonic ceramic chip, an ultrasonic transducer and an ultrasonic beauty instrument. The ultrasonic ceramic chip is provided with a first surface, a second surface and a peripheral surface, wherein the first surface and the second surface are oppositely arranged; the peripheral surface is connected with the first surface and the second surface; the first surface is provided with a positive electrode area, a negative electrode area and a first insulation area for isolating the positive electrode area from the negative electrode area, the positive electrode area is used for connecting a positive electrode of a power supply, and the negative electrode area is used for connecting a negative electrode of the power supply. When the ultrasonic ceramic chip is applied to the ultrasonic transducer, the first surface can be opposite to the output end of the ultrasonic transducer, namely, the positive electrode area and the negative electrode area face inwards, so that a positive wire and a negative wire can be conveniently and respectively conducted with the positive electrode area and the negative electrode area, and the wires do not need to bypass the peripheral wall of the ultrasonic ceramic chip; therefore, the power-on stability of the ultrasonic ceramic chip can be improved, and the operation stability of the ultrasonic transducer can be improved.

The invention relates to the technical field of batteries, in particular to an electrode plate, a preparation method thereof and a battery. The electrode plate comprises a current collector; the electrode material layer is arranged on at least one side surface of the current collector along the thickness direction; the middle transition layer is arranged on the surface, away from the current collector, of the electrode material layer, and each of the electrode material layer and the middle transition layer comprises an active material and a composite solid electrolyte; the solid electrolyte layer is arranged on the surface, far away from the electrode material layer, of the middle transition layer, and the solid electrolyte layer comprises a composite solid electrolyte; the composite solid-state electrolyte comprises an inorganic solid-state electrolyte and an organic solid-state electrolyte with lithium-conducting and electric-conducting capabilities; and the content of the composite solid electrolyte in the middle transition layer is greater than the content of the composite solid electrolyte in the electrode material layer. The battery comprises the provided electrode pole piece. According to the invention, the migration dynamics performance of lithium ions can be improved, the conductivity and compaction density of the pole piece are improved, and the cycle performance and safety performance of the battery are improved.