786 results about "Metal foil" patented technology

A semiconductor device with a metal foil and a sealing resin material. Metal foil is formed integrally with the sealing resin layer.

The invention discloses a composite heat insulation coating structure and method for a high-temperature component of an unmanned aerial vehicle. The structure comprises a heat insulation base material layer made of a high silica glass fiber material and a reflecting layer made of metal foil, and the heat insulation base material layer and the reflecting layer are compounded into a whole. The reflecting layer is used for reflecting heat radiation, and the heat insulation base material layer is used for blocking heat conduction. The problems that a traditional ceramic fiber material is prone to embrittlement and short in service life in a high-temperature vibration environment are effectively solved through a double heat insulation mechanism of reflection-blocking. The coating structure has excellent heat-resistant cyclicity, good flexibility and process adaptability, can perfectly fit special-shaped structures such as a bulkhead and a tail cover of the unmanned aerial vehicle, and remarkably improves the reliability and prolongs the service life of a thermal management system of the unmanned aerial vehicle.

The invention belongs to the field of secondary battery manufacturing, and particularly relates to a composite foil current collector welding method.The composite current collector comprises an upper aluminum conducting layer, a middle high-molecular polymer layer and a lower aluminum conducting layer, and the welding method comprises the following steps that S1, micropore machining is carried out on a tab area of the composite current collector, forming a through micropore array; s2, laying a first pure metal foil on the upper surface of the tab area, and laying a second pure metal foil on the lower surface of the tab area; and S3, welding the tab area on which the pure metal foil is laid, so that the first pure metal foil, the upper aluminum conductive layer, the lower aluminum conductive layer and the second pure metal foil form through metallurgical bonding at the position of the micropore. According to the composite foil current collector welding method, ultrasonic energy is highly concentrated on a metal interface at the edge of a micropore, local metallurgical connection is achieved, overall heat input is low, hot melting and carbonization of a middle high-molecular polymer layer are effectively avoided, and an ultrathin metal layer is protected against heat damage.

Method for manufacturing an electrical storage device, comprising the following steps: Arranging a metal foil extending outwards from an electrode plate between a first metal element and a second metal element; and Causing an ultrasonic vibration to act on a plurality of points of action from the side of the first metal element in order to bond the metal foil to the first metal element and the second metal element, whereby the first metal element has a Vickers hardness of at least 40 Hv and not more than 75 Hv.

The invention relates to a lithium ion battery multilayer metal foil and dissimilar metal connection optimization method in the technical field of new energy, and the method comprises the following steps: constructing a geometric model of multilayer metal foil and dissimilar metal connection by adopting a finite element simulation method according to initial interface bonding parameters, and applying a preset load condition in a simulation environment, determining an atomic-scale combined stress distribution diagram; for a heat balance state formed by metallurgical bonding, quantitative indexes, including shear strength and tensile strength, of connection point strength are extracted from a finite element simulation result, and a preliminary optimization data set of high-energy-density battery connection is obtained; and outputting a final metallurgical bonding formation parameter set according to a judgment result of a connection point strength stability threshold value, and applying the final metallurgical bonding formation parameter set to simulation verification of multi-layer metal foil connection so as to obtain an interface optimization scheme for improving the battery performance.

A sheet-shaped member 440 including a resin insulating layer 441 and a metal foil 442 is used. The sheet-shaped member 440 is deformed following warpage or step difference in a second conductor plate 431 and a fourth conductor plate 433, and therefore, the thickness of the resin insulating layer 441 can be set to a constant thickness of, for example, 120 μm capable of securing insulation properties. By plastically deforming a metal-based heat conduction member 450 having a thickness of, for example, 120 μm interposed between the sheet-shaped member 440 and a cooling member 340, the thickness of the metal-based heat conduction member 450 is changed to absorb the warpage or step difference generated in the second conductor plate 431 and the fourth conductor plate 433. This results in remarkable improvement in heat dissipation as compared with a case where the conductor plates are brought into contact with the cooling member 340 via an insulating layer alone.

The invention discloses a die-casting die thermal fatigue life detection device, and relates to the technical field of die-casting die detection, the die-casting die thermal fatigue life detection device comprises a detection machine body and a control platform, and the top of the detection machine body is provided with a material thermal fatigue detection assembly and a mechanical load mechanism. When the device is used, the electric push rod pushes the heat insulation sleeve to penetrate through the penetrating hole and continue to move, and the movable turning cover is jacked upwards. Under the combination of the vacuum cavity, the honeycomb-shaped porous heat insulation plate and the metal foil reflecting screen, the heat insulation sleeve forms a triple barrier of reflection, vacuum and porous heat insulation, heat transfer is blocked, and it is guaranteed that cold air is not affected by heat of an air cooling opening when blown. When the material thermal fatigue detection assembly works, the cold air pipe and the heat insulation sleeve are located outside the detection box, the heat absorption temperature of the cold air pipe is prevented from increasing in the heating process, and the mold thermal fatigue detection precision and efficiency can be improved.

The invention relates to a corrosion inhibitor for corrosion prevention of an ultra-deep well, in particular to a method for prolonging the protection period of a solid corrosion inhibitor for the ultra-deep well, which comprises the following steps: S1, uniformly mixing an imidazoline corrosion inhibitor and an N-hydrochloride-containing corrosion inhibitor, adding an auxiliary corrosion inhibitor, and mixing to obtain a corrosion inhibitor intermediate; and S2, mixing and stirring the corrosion inhibitor intermediate and a curing agent, and pouring the mixture into a mold for molding to obtain the ultra-deep well solid corrosion inhibitor with the long protection period, the mold is made of a metal foil, and small holes are distributed in the metal foil. The corrosion inhibitor is low in dosage, long in release period, good in corrosion inhibition effect, simple to operate and convenient to construct; the release rate of the solid corrosion inhibitor for the ultra-deep well can be adjusted, the release rate is controlled and adjusted by changing the contact area of the corrosion inhibitor and the outside, the protection period of the solid corrosion inhibitor for the ultra-deep well is prolonged, the comprehensive corrosion inhibition rate can reach 85% or above, the crude oil yield is increased, and remarkable economic effects are achieved.

The present invention relates to a metal foil having a rough surface, a carrier-attached metal foil including the metal foil, and a printed circuit board manufactured using the metal foil. The rough surface is naturally formed during formation of the metal foil. The formation of the rough surface allows the metal foil to have a high adhesive strength to an insulating resin substrate and enables the manufacture of a printed circuit board with improved efficiency.

The present application relates to a kind of bismaleimide resin compositions and the semi-cured sheet and laminated plate prepared therefrom, comprising components: bismaleimide compound, allyl phenol compound and oxetane compound, the equivalent ratio range of double bond in the bismaleimide compound and double bond in the allyl phenol compound is 3~0.3, the oxetane compound accounts for 0.5~5% of the overall resin, the preparation process of semi-cured sheet and laminated plate includes the following preparation steps: step S1, the glue liquid prepared by bismaleimide resin composition is infiltrated into glass fiber cloth, and then baked and dried to obtain semi-cured sheet;Step S2, the surface of semi-cured sheet is covered with metal foil, and high-temperature pressing is formed, the advantage of the present application is that the glue liquid of resin composition, semi-cured sheet has good storage property, and the laminated plate prepared therefrom has excellent heat resistance, copper foil bonding force and moisture resistance.

A method for producing a high-voltage battery unit, particularly for vehicles, includes producing a housing, which has a plurality of housing walls coating interior sides of the housing walls with a heat-resistant metal foil, introducing an electrical battery and cooling system into the housing, and sealing the housing.

The invention discloses an all-series recovery process for waste lithium ion batteries, which belongs to the field of lithium battery regeneration and comprises the main process steps of pretreatment of the waste lithium ion batteries, electrolyte recovery through microwave baking, obtaining of positive plates and negative plates through eddy current separation and separation of positive and negative black powder and metal foil through infrared irradiation. Wherein the electrolyte is recovered through microwave baking, so that the electrolyte can be quickly vaporized and then condensed and recovered under the action of microwaves by utilizing the strong polarity of the electrolyte, and therefore, the electrolyte can be efficiently separated, the removal effect is more thorough, and the problem of electrolyte pollution cannot be generated in the process. According to the infrared irradiation separation process, the absorption capacity of different adhesives to different infrared wavelengths can be utilized, and the molecular chains of the adhesives are broken and the positive and negative electrode powder and the metal foil can be automatically stripped by adjusting the irradiation infrared band and generating resonance vibration, so that the residues of the adhesives are greatly reduced; the recovery rate of the waste lithium ion battery and the purity of the recovered material are improved.

The invention relates to the technical field of lithium battery materials, in particular to a composite current collector with a local enhanced welding area and a preparation method thereof.The composite current collector with the local enhanced welding area comprises a composite current collector body, and a through hole is formed in a preset welding area of the composite current collector body; a metal foil is attached to a preset welding area of the composite current collector body and is used for being welded with a tab, and the metal foil covers the through hole. According to the technical scheme provided by the invention, the through holes are formed in the tab preset welding area of the composite current collector to form a microscopic exhaust channel, so that an escape path is provided for gas generated in the welding process, and the compactness and firmness of a welding interface are ensured; by increasing the effective conductive thickness of the predetermined welding area, the sheet resistance and contact resistance of the area are significantly reduced.

To provide a wound electrode body that can suppress damage to the curved portion. [Solution] A winding electrode body 10 is provided in which a positive electrode 11 and a negative electrode 12 are wound in a flat shape via a separator 13, and has a pair of flat portions 91 facing each other with respect to the winding center, and a pair of curved portions 92 connecting the ends of the pair of flat portions 91, wherein the positive electrode 11 includes a first base material in which a first metal foil 111 and a first resin member 112 are alternately joined along the winding direction of the winding electrode body 10, and the negative electrode 12 includes a second base material in which a second metal foil 121 and a second resin member 122 are alternately joined along the winding direction, in each of the pair of flat portions 91 the first metal foil 111 and the second metal foil 121 are alternately arranged in the direction in which the pair of flat portions 91 face each other, and in each of the pair of curved portions 92 the first resin member 112 and the second resin member 122 are alternately arranged in the radial direction of the winding electrode body 10.

The invention discloses manufacturing equipment and method for a metal foil-reinforced powder composite flux-cored wire, and belongs to the technical field of flux-cored wire manufacturing equipment. The rolling unit is rotationally connected to the upper side of one end of the rack and used for rolling and forming the steel belt; the forming unit is rotationally connected to the middle part of the rack and is used for shaping and flattening the preliminarily formed steel belt; the welding powder filling unit is mounted on the upper side of the rack and used for filling the U-shaped groove of the steel belt with welding powder; and the mixing unit is rotationally connected into the welding powder filling unit. The forming rollers are arranged in two rows, and the spatial form of the forming rollers dynamically changes in the direction of a steel belt. The forming rollers located in the middle are kept parallel to stabilize the form of a pipe blank. The upper end part of the forming roller close to the inlet end is gradually opened, so that the strip steel is smoothly guided in and preliminarily bent; and the upper end parts of the forming rollers close to the outlet end are gradually closed, so that the edge of the circular steel belt is accurately closed.

The invention discloses a waterproof method for a water meter. The waterproof method comprises the following steps: optimizing a structural layout; according to the water meter installation environment, all key components are arranged on one face of a PCB in a centralized mode, the face is defined as a face A, and the other face of the PCB is defined as a face B; performing thick potting protection on the A surface; constructing a metal foil layer on the surface B; and carrying out thin potting sealing on the surface B. The metal foil is additionally arranged, an ideal water vapor barrier can be provided, the problem of water vapor permeation of the water meter in a long-term soaking environment is solved, the potting layer and the metal foil layer are compounded to form a gas-proof and water-proof barrier difficult to permeate, and the protection efficiency of the gas-proof and water-proof barrier is far better than that of a technical scheme purely depending on the potting layer. The scheme of large-area metal foil covering and a small amount of potting materials has the optimal comprehensive performance in the water meter application environment, and the protection effect, cost control and process maturity are optimally balanced.

To provide a partial discharge measuring device and partial discharge determination method for AC rotating electric machines that are inexpensive, do not require modification work on existing equipment, and have a low risk of accidents. [Solution] The partial discharge measuring device 1 according to the present invention measures partial discharge occurring in an AC rotating electric machine 3, and is characterized by comprising: a metal foil electrode 5 of a predetermined area attached to the outer surface of the power main cable 13 within 1 m from the end of the lead wire 11 of the AC rotating electric machine 3; a circuit 7 with one end connected to the metal foil electrode 5 and grounded via a detection resistor 25; and a partial discharge measuring device 9 that measures the voltage signal caused by the partial discharge occurring at both ends of the detection resistor 25 by inputting it via a high-pass filter 27.

A resin composition contains: a curable resin (A); an acrylic-monomer copolymer (B) having a structure expressed by formulae (1) to (3) and having a weight average molecular weight equal to or greater than 10,000 and equal to or less than 900,000; an inorganic filler (C) where a molybdenum compound is present on at least a part of a surface thereof; and another inorganic filler (D) different from the inorganic filler (C). R1 is either a hydrogen atom or a methyl group. R2 includes at least one of a glycidyl group or an epoxidized alkyl group which is selected from the group consisting of a hydrogen atom, an alkyl group, the glycidyl group, and the epoxidized alkyl group. R3 is either a hydrogen atom or a methyl group. R4 is Ph (phenyl group), —COOCH2Ph, or —COO(CH2)2Ph.

This disclosure describes a battery device with at least two battery cells and a stainless-steel foil pouch with folded amplification and expansion patterns located between the battery cells. The metal foil pouch holds a liquid and / or chemicals that prevent and / or delay thermal propagation.

The invention relates to the technical field of laser devices, and discloses a multi-bar series connection assembly and a pumping solid laser, the multi-bar series connection assembly comprises a plurality of bar modules which are arranged, two adjacent bar modules are arranged at intervals, and a bent and deformable metal foil is connected between two adjacent bar modules. And the two adjacent bar modules realize positive and negative electrode conduction through the metal foil connected between the two bar modules. By means of the mode, thermal stress in the multi-bar series connection assembly can be effectively released, the problem of laser bar cracking caused by hard connection adopted by a traditional structure is solved, the structural reliability and stability of the multi-bar series connection assembly are improved, and the service life of the multi-bar series connection assembly is prolonged.

An electrode assembly for lithium-ion batteries is presented. The electrode assembly comprises a metal foil current collector with an adherent laminated active material layer and an aligned active material layer on top. The laminated layer maintains adhesion to the current collector during electrochemical cycling of the electrode assembly, while the aligned layer provides lithium-ion diffusion pathways.

This invention relates to a method for manufacturing a multilayer printed circuit board, comprising: a step of preparing a first circuit board; a step of preparing a metal laminate; a step of stacking the first circuit board on both sides of a carrier film to form a first multilayer laminate; a step of stacking the metal laminate on both sides of the first multilayer laminate to form a second multilayer laminate; a step of hot-pressing the second multilayer laminate; a step of forming a second circuit pattern on the metal foil of the hot-pressed second multilayer laminate to form a third multilayer laminate; and a step of separating the carrier film and the first circuit board from the third multilayer laminate to obtain two multilayer printed circuit boards having the first circuit board and the second circuit board stacked on them, respectively, and adjusting the MFR of the dried film to be greater than the MFR of the first thermoplastic resin layer.

A method for producing a negative electrode, comprising: feeding a negative electrode mixture containing graphite to a metal foil serving as a current collector; and applying a magnetic field to the negative electrode mixture being fed to the metal foil. Feeding the negative electrode mixture includes feeding the negative electrode mixture to the metal foil, which is transported along the outer circumferential surface of a magnetic roller serving as a support roller. Applying the magnetic field comprises a first magnetic field application step, in which a magnetic field is applied to the negative electrode mixture by the magnetic roller, and a second magnetic field application step, in which, after the metal foil containing the negative electrode mixture has passed the magnetic roller, a further magnetic field is applied to the negative electrode mixture.

The invention belongs to the technical field of microbial protection and functional metal coating preparation, and particularly relates to a preparation method of a metal-based graphene oxide and zirconium oxide composite antibacterial coating on a flexible metal foil through magnetic field assisted jet electrodeposition. According to the method, a metal ion electroplating solution containing graphene oxide and zirconium oxide serves as a raw material on a flexible metal substrate, ferromagnetic particles are introduced to serve as a carrier, one-time forming is carried out under the action of a magnetic field through the scanning jet electrodeposition technology, and efficient fixing and uniform distribution of graphene oxide and zirconium oxide in a metal coating are achieved. The prepared coating is compact in structure and high in binding force, after the coating is in contact culture with escherichia coli and staphylococcus aureus for half an hour, the antibacterial rate reaches 94% or above, the antibacterial rate reaches 97% or above, and the coating has excellent stability and reliability. The method disclosed by the invention is simple and convenient in process and high in adaptability, can form a high-performance antibacterial coating on a flexible substrate, is suitable for the antifouling and anticorrosion fields of public health facilities, marine protection and engineering equipment, and has a wide industrial application prospect.

Provided is an electrode laminate module capable of inhibiting a connection portion between a plurality of electrode laminates from breaking due to bending. The electrode laminate module includes a plurality of electrode laminates, a positive electrode metal vapor deposition resin layer, and a negative electrode metal vapor deposition resin layer, a positive electrode metal foil of each of the plurality of electrode laminates is in contact with a positive electrode vapor deposition metal film of the positive electrode metal vapor deposition resin layer, whereby the plurality of positive electrode metal foils are electrically connected in parallel with each other, a negative electrode metal foil of each of the plurality of electrode laminates is in contact with a negative electrode vapor deposition metal film of the negative electrode metal vapor deposition resin layer, whereby the plurality of negative electrode metal foils are electrically connected in parallel with each other, and a positive electrode active material layer, a separator layer or a solid electrolyte layer, and a negative electrode active material layer are sealed by the positive electrode metal foil, the negative electrode metal foil, and a resin sealing member.

The application belongs to the technical field of precision laser processing, and specifically discloses a laser micro-drilling and cutting device and method for a metal foil lead frame, which comprises a processing platform, a clamp, a three-axis motion system, a scanning galvanometer and an ultraviolet nanosecond pulse laser. The clamp applies a pre-tension to the metal foil through a screw rod mechanism and integrates a laser displacement sensor to monitor thermal deformation in real time. The three-axis motion system and the scanning galvanometer cooperate to realize three-dimensional accurate positioning, and a reflection system dynamically regulated by multiple mirrors is combined to ensure that the laser is vertically incident. The method comprises clamping and focusing, image processing and path planning, multi-directional scanning processing and post-processing. The application solves the problems of thermal deformation suppression and micron-level feature accuracy maintenance in large-format processing through optical-mechanical coupling multi-axis linkage control, has the advantages of high precision, environmental protection and high efficiency, and is suitable for the preparation of ultra-thin metal foil lead frames.

The invention discloses a high-performance functional current collector and a preparation method thereof, and relates to the technical field of current collectors. The high-performance functional current collector comprises a current collector main body and an extension part, the current collector main body comprises a base film and metal layers arranged on the upper surface and the lower surface of the base film; the base film transversely extends from one side of the main body to form an extension part which is connected with the metal foil; metal layers are selectively arranged on the upper surface and the lower surface of the extension part; by preparing the base film, the metal layer and the metal foil into the integrated structure, the internal resistance of the battery can be effectively reduced, and due to the existence of the metal foil, a conventional welding process can be directly adopted for welding, so that the welding cost is reduced, the welding stability is improved, and the service life of the functional current collector is prolonged.

The present invention provides a system that can reduce the probability of cracking occurring in laminated metal foil when joining laminated metal foil and metal materials. [Solution] The laminated metal foil W1 is ultrasonically bonded using ultrasonic vibration, resulting in a recess T as an ultrasonic bonding mark. ij A recess T is formed in the designated area of ​​the laminated metal foil W1. Furthermore, the recess T of the laminated metal foil W1 is placed on top of the metal material W2. ij When laser light LB is irradiated onto the material, the laminated metal foil W1 and the metal material W2 are joined together.

The present invention relates to an electrode tab processing apparatus for a secondary battery and an electrode tab processing method using the same, and more particularly to an electrode tab processing apparatus for forming a connecting portion by cutting a predetermined region of an electrode tab extending toward one side of an electrode collector so that a metal foil can be connected to the electrode tab.

An additive manufacturing feedstock production system includes a transition roller configured to combine reactive metal foils into combined reactive metal foils with a first combined thickness. The additive manufacturing feedstock production system includes a work roller configured to compress the combined reactive metal foils to a second combined thickness less than the first combined thickness, and a first processing module configured to segment and stack the combined reactive metal foils into stacked reactive metal foils, and feed the stacked reactive metal foils into the work roller. The work roller is configured to repeatedly compress the stacked reactive metal foils into compressed stacked reactive metal foils with a stacked thickness equal to the second combined thickness. The additive manufacturing feedstock production system has a second processing module configured to segment the compressed stacked reactive metal foils into a wire feedstock. An alternative first processing module downstream from the work roller is configured to roll the combined reactive metal foils into rolled reactive metal foils. A work groove roller is downstream from the first processing module and configured repeatedly compress the rolled reactive metal foils into compressed rolled reactive metal foils with a roll diameter equal to a groove diameter into a wire feedstock.