75results about How to "Improve leakage problem" patented technology

The invention provides a pipeline connection assembly and an air conditioner with the same. The pipeline connection assembly comprises a connection pipe nut, a first pipe joint and a second pipe joint, wherein the connection pipe nut comprises a first internal thread section located at the first end, a second internal thread section located at the second end, and a cylindrical outer surface, and a first connected pipe fitting is installed on the connection pipe nut; the first pipe joint comprises a force application section and a first external thread section, the first external thread section is matched with the first internal thread section, and a second connected pipe fitting is installed on the first pipe joint; the second pipe joint is arranged on the first connected pipe fitting in a sleeved mode and comprises a pipe joint body and an auxiliary nut, and the first pipe joint is provided with a first axial through hole enabling the first connected pipe fitting to be communicated with the second connected pipe fitting. According to the pipeline connection assembly, demounting prevention of connection pipes can be truly achieved, the problem that refrigerants are leaked due to disassembling of existing pipelines after being connected is solved, and pipeline connection can be more compact; after-scale installation and maintenance cost is reduced, and the use range of flammable refrigerants is enlarged.

The invention provides a convertor station electrical signals-based subsynchronous oscillation monitoring analysis method. The method includes the following steps that: step 1, acquiring and selecting appropriate converter station electrical signals x (k); and step 2, adopting a windowed interpolation FFT algorithm and an ESPRIT algorithm to identify the subsynchronous oscillation information of the electrical signals x (k). Compared with the prior art, and according to the convertor station electrical signals-based subsynchronous oscillation monitoring analysis method provided by the invention, the windowed interpolation FFT algorithm and the ESPRIT algorithm are applied to electrical signal analysis, and therefore, analysis precision can be improved; and monitoring and prevention of subsynchronous oscillation can be performed based on the method, so that the security and economical efficiency of the operation of a power grid and a unit can be improved.

The invention relates to an ultra-wide band strong electromagnetic field protection device, and relates to the field of space strong electromagnetic field protection. The ultra-wide band strong electromagnetic field protection device comprises an active frequency selection surface, a two-layer medium substrate and a band-pass frequency selection surface. The active frequency selection surface is printed on the upper surface of the upper dielectric substrate. The band-pass frequency selection surface is printed on the lower surface of the lower dielectric substrate. An air layer is arranged between the two dielectric substrates. The unit structure of the active frequency selection surface is a metal patch etched with a square annular gap and four circular arc-shaped gaps. The four edges ofthe square annular gap are crossed with switching diodes, and three rectangular patches arranged at equal distances are loaded on the circular arc-shaped gaps. The unit structure of the band-pass frequency selection surface is similar to that of the active frequency selective surface, except that the sizes of the square annular gap and the circular arc-shaped gaps are different from that of the latter. The problem that the current protection device has limited protection bandwidth and causes high-power signal leakage can be solved.

The invention discloses a treasure box article feeding and taking system and a treasure box article feeding and taking method based on a treasure box cabinet. The system comprises treasure boxes, a server and the treasure box cabinet, wherein the treasure boxes and the server communicate through a network; the treasure box cabinet and the server communicate through the network; the treasure boxes are used for storing express articles; the treasure box cabinet is used for storing the treasure boxes; the server is used for controlling the opening of the treasure boxes. When the treasure box article feeding and taking system disclosed by the invention is used for feeding and taking the articles, a sender carries one treasure box for feeding articles, and a recipient can take away the express articles in the treasure box and the treasure box, so that the recipient can take away all the express articles, and the express articles are prevented from being lost; during carrying, greater convenience is realized.

The invention relates to a preparation method of syringopicroside (SYR) poly(lactide-co-glycolide) (PLGA) nanoparticles. The preparation method comprises the following steps of: weighing SYR and dissolving SYR into distilled water to serve as an internal aqueous phase; weighing PLGA and dissolving PLGA into an organic solvent consisting of ethyl acetate and dichloromethane to serve as an organic phase; slowly adding the aqueous phase into the organic phase dropwise under magnetic stirring and performing ultrasonic treatment in ice-water bath to obtain SYR primary emulsion (W / O); injecting the prepared primary emulsion into an aqueous phase containing an emulsifier poloxamer188 and stirring to form SYR primary multiple emulsion; quickly injecting the multiple emulsion into an external aqueous phase solution comprising poloxamer188, rotationally evaporating the multiple emulsion at a certain temperature and under reduced pressure until the mixed solvent of the ethyl acetate and the dichloromethane is volatilized completely to obtain a nanoparticle colloidal solution; freeze-drying to obtain the SYR-PLGA nanoparticles. The SYR-PLGA nanoparticles prepared by the method can be used for improving the stability of the SYR, prolonging the drug action time, overcoming the defect of high metabolism velocity, most importantly, achieving targeted and slow-release effects, and improving the bioavailability.

The invention discloses an integrated enterprise IT operation and maintenance management system and method. The system comprises an IT service process management module, an IT resource management module and a server. The IT resource management module is integrated with a report management module, an IP address management module and a monitoring module. The system and the method in the invention can monitor the IT operation and maintenance management system comprehensively; the faults are automatically corrected; meanwhile, the corrected results are compared and estimated, thereby effectively preventing the faults from being corrected incompletely; an estimation mechanism is added so that the faults that are unqualified for comparison and correction are corrected and estimated again, and the information of the faults that are unqualified for re-correction is transmitted to a safety alarm module at the same time; an alarm is sent out to remind related personnel to perform maintenance; the fault can be positioned, thereby facilitating the related personnel to perform maintenance in time and ensuring the operation and maintenance of the IT operation and maintenance system; the internalresources can be prevented from leakage effectively and the operation progress and performance can be monitored in real time, thereby facilitating managers to know the situations, which is convenientand fast.

The invention provides an anti-detaching pipe joint and an assembly. The anti-detaching pipe joint assembly comprises the anti-detaching pipe joint and a pipe connecting nut, wherein the anti-detaching pipe joint comprises an independent pipe joint body and an auxiliary nut; the two ends of the pipe joint body are provided with screw threads; the screw thread at one end is matched with the screw thread of the auxiliary nut; the screw thread at the other end is matched with the screw thread of the pipe connecting nut; the middle of the pipe joint body is further provided with a non-threaded segment; the non-threaded segment is provided with a groove; first wedged teeth are arranged in the groove; and the corresponding end face of the auxiliary nut is provided with second wedged teeth which are meshed with the first wedged teeth. The invention further provides an air conditioner. An evaporator and a connecting pipe of the air conditioner are connected with each other through the anti-detaching pipe joint assembly. Due to the adoption of the anti-detaching pipe joint and the assembly, anti-detaching pipe connecting connection can be realized truly, the problem of cold medium leakage caused by detachment of the conventional pipe joint and pipe connecting nut is solved, and the connection between the joint and the nut is firmer; the after-sales installation and maintenance costs are reduced, and the application range of a combustible refrigerant is expanded; and the anti-detaching pipe joint is easy to install, is simple in structure, and is convenient to process.

The invention discloses a button cell and a covering method of the same, and relates to the field of button cells. The button cell comprises a battery cell, an upper pole cover, insulation glue, a lower pole cover and a shell, wherein the upper pole cover is connected to one end of the shell by the insulation glue formed through hot melting, the lower pole cover is arranged at the other end of theshell, the battery cell is arranged in the shell, one end of the battery cell is connected to the upper pole cover, and the other end of the battery cell is connected with the lower pole cover. The covering method of the button cell, provided by the invention, is used for processing the button cell. With the button cell and the covering method of the same, provided by the invention, the sealing performance of the button cell can be improved, and liquid leakage and short circuit of the button cell are improved.

The embodiment of the invention provides a sensitive information processing method and device, a storage medium and equipment, belongs to the technical field of computers, and solves the problems thatmultiple service parties need to upgrade encryption rules with a data provider at the same time, the maintenance cost is high, and a sensitive information leakage source cannot be tracked. The methodcomprises the following steps: receiving a data request comprising a service party identifier and requested sensitive data identifier information; extracting sensitive data from a database; encrypting the sensitive data by using a random key corresponding to the service party identifier in the current life cycle, and returning the ciphertext to the service party; when a decryption request containing the service party identifier and the ciphertext is received, extracting a random key corresponding to the service party identifier in the current life cycle; decrypting the ciphertext by using therandom key to obtain sensitive data, and associatively storing the service party identifier and the sensitive data in a behavior database; and returning the sensitive data to the business party. Theembodiment of the invention is suitable for the sensitive data processing process.

The invention discloses a GaN-based HEMT low-temperature gold-free ohmic contact electrode. The GaN-based HEMT low-temperature gold-free ohmic contact electrode comprises a GaN-based HEMT epitaxial layer, wherein a GaN channel layer is arranged in the GaN-based HEMT epitaxial layer. The electrode comprises a first metal layer Ti, a second metal layer Al and a third metal layer TiW which are sequentially arranged on the upper surface of the GaN-based HEMT epitaxial layer from bottom to top, or a first metal layer Ti, a second metal layer Al, a third metal layer Ti and a fourth metal layer TiW which are sequentially arranged from bottom to top. The invention also correspondingly discloses a preparation method of the electrode. According to the invention, the annealing temperature of GaN-based HEMT ohmic contact is effectively reduced, 2DEG leakage caused by overall etching of an AlGaN barrier layer and current reduction during ohmic contact forming are improved, ohmic contact forming difficulty is reduced, and the appearance and edge of an ohmic contact surface after low-temperature alloy annealing are smoother. Meanwhile, the manufacturing cost of a GaN-based HEMT device can be reduced.

The invention discloses a bone-like hierarchical pore ceramic-based photo-thermal storage material and a preparation method thereof. An aluminum nitride hierarchical pore structure is prepared by adopting a foaming method by imitating a human bone structure, a layer of titanium nitride is loaded on the aluminum nitride framework, and finally, inorganic salt is soaked into the aluminum nitride-titanium nitride framework by a vacuum soaking method to prepare the hierarchical pore aluminum nitride ceramic-based photo-thermal storage material. The aluminum nitride grade pore structure in the composite material forms a continuous heat conduction channel, so that the overall heat conductivity is greatly improved and can reach 27W / m.K, and the problem of low heat storage / release rate caused by low heat conductivity of the phase change material is greatly improved. The loaded titanium nitride enables the composite material to directly take the sun as a heat source, the aluminum nitride framework conducts heat quickly, inorganic salt stores heat, and the composite material is a novel composite photo-thermal storage material integrating absorption, transmission and heat storage.

The method for treating flexible package whitened after thermal pressure sterilization is characterized by that microwave energy whose power density is 1X10 to the minus fifth power -8X10 to the minus fifth power is adopted to irradiate for 8-1 min., then makes the flexible package cool, and the frequency of the above-mentioned microwave is 2400-2500 MHz or 890-940 MHz or 5725-5875 MHz or 22375-22625 MHz. Said invention utilizes microwave energy to make irradiation to make whitened non-transparent flexibly package can quickly dry and restore to transparent and original beautiful state, so that it can greatly shorten production preroid, and is favourable for inspection of leakage and clearness, and can ensure production efficiency and product quality.

The invention discloses a film bulk acoustic wave resonator and a manufacturing method thereof. The film bulk acoustic wave resonator comprises a first substrate; a supporting layer bonded on the first substrate, wherein a first cavity penetrating through the supporting layer is formed in the supporting layer; and a piezoelectric laminated structure covering the first cavity, wherein the piezoelectric laminated structure comprises a first electrode, a piezoelectric layer and a second electrode which are sequentially laminated from top to bottom, and the first electrode, the piezoelectric layerand the second electrode are overlapped in the direction perpendicular to the piezoelectric layer in an effective resonance area; the first electrode comprises a first side face and / or the second electrode comprises a second side face, at least part of the boundary of the effective resonance area comprises the first side face and / or the second side face, and the included angle between the first side face and / or the second side face and the surface of the piezoelectric layer is 85-95 degrees. According to the invention, the crystal orientation of the piezoelectric layer can be improved, the transverse wave loss of the resonator is reduced, and the quality factor of the film bulk acoustic resonator is improved.

The invention discloses a two-stage internal gear pump. The two-stage internal gear pump comprises an outer rotor, a middle rotor and an inner rotor which are sealed through sealing components, and further comprises a high-pressure sealing block and a low-pressure sealing block; the outer rotor, the middle rotor and the inner rotor are sequentially sealed from outside to inside, the inner rotor is connected with power input equipment, the high-pressure sealing block and the corresponding sealing component separate the inner rotor and the middle rotor into a closed second-stage low-pressure area and a closed second-stage high-pressure area, and the low-pressure sealing block and the corresponding sealing component separate the middle rotor and the outer rotor into a closed first-stage low-pressure area and a closed first-stage high-pressure area; and the first-stage low-pressure area is communicated with a liquid inlet, the second-stage high-pressure area is communicated with a liquid outlet, and the second-stage low-pressure area is communicated with the first-stage high-pressure area. Compared with a common gear pump, the two-stage internal gear pump has the function of secondary pressurizing, the higher liquid pumping pressure and working efficiency can be achieved, and the working requirement of a high pressure hydraulic system is met.

The present invention relates to a low temperature plane target. The low temperature plane target comprises a target core, a gasket, a detection window, an entering window and a gas filled tube. The target core is provided with a circular hole, and the circular hole and the target core are coaxially arranged; a connection hole is arranged at the side wall of the target core and communicates with the circular hole; the gas filled tube is connected with the connection hole, and an annular left side wall and an annular right side wall are disposed at the inner wall of the target core; holding cavities having an original thickness of 400[Mu]m are formed between the detection window, the entering window, the annular left side wall and the annular right side wall; the gasket is a circular ring cylinder, and the external diameter of the gasket is the same as the internal diameter of the circular hole; the detection window is a double-cylinder structure, the detection window includes a first cylinder and a second cylinder which are coaxially arranged, and the external diameter of the first cylinder is the same as the internal diameter of the circular hole; antireflection films coat the first cylinder and the second cylinder, and the entering window is a layered structure, so that the thickness requirement of liquids such as hydrogen, deuterium and the like in the laser physics experiment is satisfied.

The invention discloses a composite sensing membrane composed of polypyrrole, fluorescein isothiocyanate and porous alumina as well as a preparation method and an application of the composite sensing membrane. The composite sensing membrane is formed by orderly coating inner walls of the hole of a porous alumina membrane with polypyrrole and fluorescein isothiocyanate, wherein the porous alumina membrane is 70-90 mu m, the hole density is 109-1011 / cm<2>, the holes are through holes, and the diameter of each hole is 26-35nm. The preparation method comprises the following steps of: orderly dropping pyrrole ethanol solution and ferric chloride solution to the porous alumina membrane; putting the porous alumina membrane with the pyrrole ethanol solution and the ferric chloride solution under the negative pressure equal to or less than 0.1MPa for at least 10min; carrying out the ultrasonic cleaning to the porous alumina membrane with deionized water and ethanol so as to obtain the porous alumina membrane coated with polypyrrole on the surface and the inner wall of the holes; then immersing the porous alumina membrane into the fluorescein isothiocyanate ethanol solution with the concentration of 10<-3> to 10<-5>M for at least one hour; and washing the fluorescein isothiocyanate on the surface of the porous alumina membrane with ethanol to obtain the target product (composite sensing membrane). According to the composite sensing membrane, the trace 2,3,3'-trichlorodiphenyl can be effectively detected.

The invention relates to a nickel-plated steel strip, a steel battery case manufactured from the steel strip, and a method of manufacturing the steel battery case. In the invention, firstly, a pre-nickel-plating layer is formed on the inner surface of the steel strip; then through thermal treatment, a surface layer and a bottom Fe-Ni alloy layer are formed from the inter-permeated pre-nickel-plating layer and a contact surface, a part of the nickel-plating layer being reserved between the surface layer and the bottom Fe-Ni alloy layer, so that a problem that on the steel strip, during a steelcase stamping process, cracks are liable to generate in the plating layer is avoided; the surface layer and the bottom Fe-Ni alloy layer formed through the thermal treatment have compact structure, sothat not only is excellent anticorrosive performance achieved, but also the combining force between the Fe-Ni alloy layer and the Fe substrate is far higher than that between the plating layer and the Fe substrate in the prior art, so that by improving the combining force between the plating layer and the Fe substrate, the problem of forming cracks in the plating layer during the steel case stamping process is greatly solved, thus solving liquid leakage during long time storage of the battery. In addition, a part of the nickel-plating layer is reserved, thus preventing iron from dissolving out from the Fe-Ni alloy layer.

The invention discloses an anti-ball-clamping multifunctional basketball frame, and belongs to the field of sport equipment. The anti-ball-clamping multifunctional basketball frame is composed of a lamplight set, a backboard, a basket, an installing support, an anti-ball-clamping assembly, an installing gasket, a first storage battery, a first support, a first pulley, a second pulley, a pull rope,a third support, a base, a storage rack, a basketball storage box, a triangular support, a suspension rod, a hook, a solar panel, a second support, a supporting rod, a first installing support and asecond installing support. According to the designed basketball frame, get-off clothes or packsacks can be suspended to the hook, and can also overlapped on a suspension rod, meanwhile, the clothes and the packsacks can be placed in a clothes basket of the storage rack, people can place a water cup into the clothes basket, and the good clothes storage space can be provided; due to the unique design of a storage chamber, precious objects can be placed into small boxes of the storage chamber in a classified mode, and meanwhile the small boxes of the storage chamber can also have the mobile phonecharging function.

The invention provides a composite phase change material as well as a preparation method and application thereof, and relates to the technical field of special materials. The composite phase change material comprises a cyclodextrin auxiliary agent, and the cyclodextrin auxiliary agent comprises at least one of beta-cyclodextrin, alpha-cyclodextrin, gamma-cyclodextrin, methyl-cyclodextrin, ethyl-cyclodextrin, alpha-cyclodextrin grafted silicon dioxide aerogel, citric acid grafted cyclodextrin and polysiloxane grafted cyclodextrin. As a hydrophobic environment is formed in a cyclodextrin molecule cavity, various organic molecules can be easily included due to a proper cavity size, and a host-guest inclusion complex is formed; meanwhile, numerous hydroxyl groups of cyclodextrin can provide a large number of acting sites after being modified according to the performance characteristics of the phase change material, and form a relatively firm framework supporting and blocking structure with a macromolecular supporting material, a compatilizer and the phase change material through hydrogen bonds and the like, so that the phase change material is effectively prevented from migrating to the surface; and the leakage problem of the phase change material in microcapsule packaging is greatly improved.

The invention discloses a multichannel electrodialysis device. The multichannel electrodialysis device comprises an upper electrode plate and a lower electrode plate, wherein a cylindrical membrane stack component is arranged between the upper electrode plate and the lower electrode plate, and is provided with a plurality of material liquid channels penetrating through the membrane stack component along a vertical axial direction; electrolyte tubes are respectively arranged on the upper electrode plate and the lower electrode plate; electrolyte openings are formed in the electrolyte tubes; the electrolyte tubes are communicated with the outside through the corresponding electrolyte ports; at least four material liquid openings are formed in positions, corresponding to the material liquid channels, of the upper electrode plates and / or the lower electrode plate; one end, communicated with the outside, of each material liquid opening is positioned at the side face of the upper electrode plate and / or the lower electrode plate; the other end of each material liquid opening is communicated with the corresponding material liquid channel; electrode binding posts are respectively arranged on the upper electrode plate and the lower electrode plate. The multichannel electrodialysis device provided by the invention has the advantages of less liquid leakage, high current efficiency, high desalinization efficiency and the like.

A method for realizing a front running train and a rear running train butting: when the two trains are in a certain range, the front train releases one end of a wire rope with the other end fixed, and the latter train picks up the released end of the wire rope and shortens the distance between the two trains by winding the wire rope, so as to control the relative speed between the two trains, and finally realize safe and steady mutual butting.

The invention discloses an LED epitaxial structure and a preparation method thereof. The LED epitaxial structure comprises a substrate, a first type expitaxial layer located on the substrate, and an adjusting layer located on the first type expitaxial layer, a quantum well structure layer located on the adjusting layer and a second type epitaxial layer located on the quantum well structure layer,wherein the adjusting layer comprises a first potential well layer and a first potential barrier layer which are stacked by N periods, from the first period to the N period, components containing In in the first potential well layer taperingly change, and / or components containing A1 in the first potential barrier layer taperingly change, N is an integer larger than or equal to three; the adjustinglayer is added between the first type epitaxial layer and the quantum well structure layer, the components containing In of the first potential well layer in the adjusting layer and / or the componentscontaining A1 of the first potential barrier layer in the adjusting layer taperingly change, thereby improving the crystalline quality and the stress state of the epitaxial layer, effectively improving the problem of current carrier leakage under large current, and improving the LED luminance.

The invention discloses a steel ladle turret, and aims at providing metallurgical industry steel making continuous casting equipment. The steel ladle turret has the functions a steel ladle is automatically rotated, lifted and weighed, and heat insulating covers are automatically added to the steel ladle. The steel ladle turret is provided with a rotating supporting device, a lifting device and a heat insulating cover device. In the technical scheme, in the rotating supporting device, three rolling body assemblies are adopted for supporting a supporting gear ring inner hole and the end face thereof, and the capacity of bearing overturning moment is high; and the lifting device is provided with a parallelogram connecting rod structure, the steel ladle can be always kept in a vertical state in the lifting process, and a double-transmission-box device is adopted for providing power for rotation of the two heat insulating covers in a centralized manner. By the adoption of the technical scheme, the steel ladle can be stably rotated, the braking efficiency is high, the braking reliability is good, the overturning torque resistant load is large, damage of reverse impact movement to a transmission chain can be effectively overcome, the steel ladle is stably lifted, the lifting position is accurate and controllable, impact of a weighing device is low, cover adding and removing actions ofthe steel ladle are reliable, the steel ladle is rotated and positioned accurately, and the structure is compact.

The invention relates to the technical field of permanent magnet transmission, and discloses a permanent magnet transmission food garbage pulverizing method preventing liquid leakage. Through the arrangement of inclined flow guiding plates (18) at the bottoms of baffles (15) and drainage holes (19) formed in the inclined flow guiding plates (18), food garbage liquid accidentally leaking from the upper portion is effectively guided into flow storage boxes (20), and it is effectively guaranteed that when the liquid leakage situation happens, the leakage liquid is collected in time, and the foodgarbage liquid is prevented from being scattered all around. Through the arrangement of an output rotation shaft (7) on a shaft base (6) of an inner cavity of a machine shell (1), an upper blade (8) on the output rotation shaft (7) is driven to conduct one-procedure cutting pulverizing treatment on the food garbage input from the positions of a feeding pipeline (4) and a feeding port (5) under thesituation that a permanent magnet motor provides power, the food garbage is effectively cut to the diameter smaller than the diameter of through holes in a large-hole filter plate (9), and accordingly when the food garbage enters a cutter head (10), the food garbage is more conveniently pulverized, the pulverizing effect is better, and more stability is achieved.

The invention provides a minitype acoustic generator, mainly comprising a base, a magnetic bowl embedded in the base, an alnico arranged in the magnetic bowl, a pole piece attached on the alnico, a coil arranged in the magnetic clearance formed by the magnetic bowl and the alnico, a vibration film connected with one end of the coil, and an upper cover; the upper cover and the base form a containing chamber commonly; the pole piece comprises a pole piece top surface and a pole piece side wall extending from the top surface of the pole piece; the alnico comprises an alnico top surface and an alnico side wall extending from the top surface of the alnico; and the side wall of the pole piece is provided with a first through trough and the position of the side wall of the alnico corresponding tothe first through trough is provided with a second through trough. The minitype acoustic generator improves the frequency response characteristic.

The invention discloses a treasure box article feeding and taking system and a treasure box article feeding and taking method based on a treasure box cabinet. The system comprises treasure boxes, a server and the treasure box cabinet, wherein the treasure boxes and the server communicate through a network; the treasure box cabinet and the server communicate through the network; the treasure boxes are used for storing express articles; the treasure box cabinet is used for storing the treasure boxes; the server is used for controlling the opening of the treasure boxes. When the treasure box article feeding and taking system disclosed by the invention is used for feeding and taking the articles, a sender carries one treasure box for feeding articles, and a recipient can take away the express articles in the treasure box and the treasure box, so that the recipient can take away all the express articles, and the express articles are prevented from being lost; during carrying, greater convenience is realized.

The invention provides a data processing method, a data processing device and image forming equipment, and relates to the technical field of data processing. The data processing method is applied to the image forming device and comprises the steps that whether the image forming device breaks down or not in the process of executing an image forming operation is judged, and the image forming operation cannot be executed when the fault occurs; and if the image forming device has the fault, a first preset operation is executed, the first preset operation comprising deleting data to be processed ina cache unit of the image forming device. Through the method, the problem that in the prior art, due to the fact that image forming equipment breaks down, information leakage is likely to happen canbe solved.

The invention provides a square lithium battery which comprises a shell assembly and a battery cell arranged in the shell assembly, the battery is characterized in that the shell assembly comprises a first shell, a second shell, a positive electrode cover plate, a negative electrode cover plate and a barrier strip; one end of the first shell is clamped at the top of the positive electrode cover plate, and the other end of the first shell is clamped at the top of the negative electrode cover plate; one end of the second shell is clamped at the bottom of the positive electrode cover plate, and the other end of the second shell is clamped at the bottom of the negative electrode cover plate; and the first shell and the second shell abut against each other. The positive electrode cover plate is connected with a positive electrode lug of the battery cell; the negative electrode cover plate is connected with a negative electrode lug of the battery cell; the positive electrode cover plate and the negative electrode cover plate have the same structure; and one end of the barrier strip is connected with the positive electrode cover plate, and the other end of the barrier strip is connected with the negative electrode cover plate. The problems that the longitudinal length of the lithium battery shell is too long and the assembly is difficult can be solved, and the battery core can enter the shell and an electrolyte solution can be injected conveniently.

The invention discloses a preparation method of a film bulk acoustic resonator with electrodes provided with double ring-shaped and bridge-shaped structures, and the method specifically comprises the following steps: sequentially depositing a stripping layer, a piezoelectric layer and a lower electrode on a substrate, and depositing an inner ring-shaped bulge, an outer ring-shaped bulge and a lower sacrificial layer wrapping the two bulges on the lower electrode, depositing a lower protection layer wrapping the lower sacrificial layer and a to-be-bonded layer II wrapping the lower protection layer on the piezoelectric layer; bonding the to-be-bonded layer I and the to-be-bonded layer II on the substrate, and removing the stripping layer and the substrate; depositing two long-strip-shaped upper sacrificial layers on the piezoelectric layer, depositing two bridge-type structures on the two long-strip-shaped upper sacrificial layers, depositing an upper electrode with the two sides connected with the two bridge-type structures respectively on the surface of the piezoelectric layer, and depositing an upper protection layer on the upper electrode and the two bridge-type structures; and forming a through hole in the piezoelectric layer, and removing the strip-shaped upper sacrificial layer and the strip-shaped lower sacrificial layer. The surface of the lower electrode of the resonator is provided with the inner annular protrusion and the outer annular protrusion, and the two side walls of the upper electrode are each provided with a bridge-type structure, so that the film bulk acoustic wave resonator has a higher Q value.