101results about How to "Shield electromagnetic radiation" patented technology

The invention provides a protective device of a power battery, which solves the problem that the whole battery pack forms a short-board effect because the environmental temperature difference between single batteries causes the effectiveness reduction of single batteries in the process of charging and discharging a battery pack of the power battery in the prior art. The protective device comprises a closed battery box inside which a liquid is contained, wherein the battery pack is immersed into the liquid inside the battery box. The invention also provides a protective method of the power battery, comprising the step of immersing the battery pack of the power battery into the liquid. The protective device or the protective method can equalize the environmental temperature of all single batteries in the battery pack, avoid the problem of the single batteries, prevent the short-board effect, prolong the service life of the batteries and also achieve the effect of fire prevention because of the liquid sealability of the liquid.

The invention discloses a multifunctional composite material and an application thereof. The multifunctional composite material is in a layer-like structure formed by using a binding agent to carry out hot-press compositing, and comprises an upper outer surface layer, a lower outer surface layer and a middle layer. The multifunctional composite material is characterized in that the upper outer surface layer and the lower outer surface layer are formed by transparent polymers; the middle layer contains at least one layer of textile fabric; art patterns are arranged on at least one surface of the textile fabric; and the binding agent for hot pressing is a non-light-tight polymer. The composite material disclosed by the invention has various functions of high light transmission, art decoration, light weight and convenience, high strength, strong anti-impact capability, screening of electromagnetic radiation, high toughness, isolation of ultraviolet rays and infrared rays and the like, and can be applied to various industries, such as industries of manufacturing a sun-shading and lighting product, a panel for a household appliance, an indoor decorative material, a sports protection product, a safe protection product, a partition wall, abruption, a luggage and the like. The multifunctional composite material is widely applied, can meet various functional requirements on the material in the current society, and has the advantages of practical values, energy conversation and environmental friendliness.

The photoelectric converter comprises: a shell with top/bottom cover, a signal processing module in shell, a photoelectric conversion assembly, and an elastic interface unit between two covers to process signal and fix the grounding loop. This invention can shield EMI efficiently, and increases device reliability.

The invention provides a heat dissipation system of heating modules, wherein the plurality of heating modules are respectively fixed on the two sides of a circuit board; and two heat dissipation modules are respectively covered on the surfaces of the heating modules at the two sides of the circuit board and lead the plurality of heating modules and the circuit board to be clamped and fixed betweenthe two heat dissipation modules, so that a sandwich structure is formed. The heat dissipation system has compact structure, large heat dissipation area and good heat dissipation effect, and can effectively shield electromagnetic radiation.

The invention discloses a loudspeaker. The loudspeaker comprises a vibrating diaphragm, a basin stand, a sound coil, a metal pillar, a first input end, a second input end, a magnet, a magnetic carrier and a metal shell, wherein the basin stand is used for supporting the vibrating diaphragm, the metal pillar is arranged in the sound coil, the first input end and the second input end are connected with the sound coil, the magnetic carrier is used for bearing the magnet, and the metal shell is connected with the basin stand and used for containing the sound coil, the metal pillar, the magnet, the first input end, the second input end and the magnetic carrier. By the adoption of the loudspeaker, electromagnetic radiation can be shielded, so that the electromagnetic radiation of the sound coil is lowered, the sound quality is effectively improved, digital sounds in the audio field are effectively removed, the sound timbre is made soft, analysis force is increased, and the sound effect is improved.

The invention relates to a weft-knitting knitted anti-radiation fabric, which is prepared from yarns and spandex through weft knitting in a weft knitting machine. The fabric is prepared by the following steps of: in a first path, simultaneously feeding natural fiber yarns and spandex yarns, looping with low needles in needle cylinder knitting needles, and floating with high needles in the needle cylinder knitting needles; in a second path, looping anti-radiation yarns with high needles in the needle cylinder knitting needles, and floating with the low needles in needle cylinder knitting needles; and repeating the knitting method of the first path and the second path in a third path and a fourth path, and taking two paths as a cycle, and circulating, wherein the natural fiber yarns are combed cotton/Modal blended yarns; and the anti-radiation yarns are polyamide yarns with silver plated surfaces. The fabric attenuates 40 to 50 decibels in a range from 10 to 3,000MHz, has the shielding efficiency of over 99.99 percent, and can effectively shield electromagnetic radiation from home appliances and natural world. Meanwhile, compared with a fabric singly prepared from an anti-radiation material, the invention has obvious advantages that: the fabric is light, thin, ventilating, soft and comfortable.

The invention relates to a macromolecular film. The macromolecular film comprises a base layer (1) and a PET (Polyethyleneglycol Terephthalate) protective layer (2) and is characterized in that an electromagnetic radiation preventing layer (3) is arranged between the base layer (1) and the PET protective layer (2) and is a silver-fiber layer, the base layer (1) is made from a fabric, the fabric comprises warps and wefts, the warps are artificial cotton yarns, the wefts are Hemp/Richcel fiber union yarns, and the warps and the wefts are arranged in a manner of being vertical to each other. According to the macromolecular film, the electromagnetic radiation preventing layer is arranged between the base layer and the PET protective layer and is the silver-fiber layer, an internal magnetic field is formed by the silver-fiber layer and an electrical appliance generating electromagnetic radiation, and then, the electromagnetic radiation is shielded, so that the effect of preventing the electromagnetic radiation is achieved. The macromolecular film has moisture-guiding and air-permeable properties.

The invention discloses a multifunctional anti-radiation coating and a preparation method thereof. The multifunctional anti-radiation coating consists of the following raw materials in parts by weight: 68.0-85.0 parts of a polyvinyl acetate emulsion, 2.0-3.0 parts of nano zinc oxide, 10.0-17.0 parts of titanium dioxide, 2.0-5.0 parts of copper powder, 18.0-30.0 parts of barium sulfate, 0.5-1.5 parts of CMC, 2.0-3.0 parts of manganese naphthenate, 0.5-1.5 parts of methyl ethyl ketoxime, 1.0-3.0 parts of dibutyl phthalate, 1.0-2.0 parts of polymethyl acrylate, 1.0-2.0 parts of benzotriazole, 6.0-8.0 parts of nano anion powder, 10.0-20.0 parts of deionized water, 1.0-3.0 parts of a suspending agent, 8.0-12.0 parts of a filler and 2.5-6.0 parts of a filming additive. The multifunctional anti-radiation coating disclosed by the invention is convenient to construct, rapid to cure, good in stability, environmental-friendly and non-toxic, is capable of not only effectively shielding radon gas, but also preventing electromagnetic radiation and ionization radiation, moreover is capable of effectively absorbing harmful gases such as formaldehyde, is capable of purifying air, and is a multifunctional anti-radiation coating.

The invention provides a carbon-fiber double-conductor grounding heating cable. The carbon-fiber double-conductor grounding heating cable comprises a main wire and heating wires. The heating wires are connected with the main wire. The heating wires are connected in parallel. The main wire comprises a live wire body, a first null wire body and a first grounding wire body. Each heating wire comprises a second null wire body, a second grounding wire body and an electric heating wire body. The carbon-fiber double-conductor grounding heating cable has the advantages of being safe to use and good in electrical property.

The invention discloses a silver fiber interwoven radiation-proof shirt fabric, which comprises warps and wefts, wherein nano silver fibers, two-strand combed cotton color yarns and maifan stone color yarns are respectively selected and used as the warps; nano silver fibers and Tencel color yarns are respectively selected and used as the wefts; and the warps and the wefts adopt a one-up one-down plain weave. Compared with common shirt fabrics, the shirt fabric disclosed by the invention has obvious advantages, i.e. the shirt fabric can effectively prevent electromagnetic radiation, has the efficacies and characteristics of bacteria resistance, deodorization, moisture absorption, good air permeability, body temperature regulation, skin pH value regulation, good antistatic property, water washing resistance, high wearing comfortableness and the like, and is an environment-friendly hygienical functional fabric which is preferred by the clothing industry for producing radiation-proof shirts.

The invention provides an electromagnetic interference-prevention power regulation circuit integrated module and an installation method thereof. The electromagnetic interference-prevention power regulation circuit integrated module comprises a copper-coated ceramic substrate and power regulation circuit components and also comprises a shell, wherein the power regulation circuit components are arranged on the copper-coated ceramic substrate, the copper-coated ceramic substrate and the power regulation circuit components are arranged in the shell, the copper-coated ceramic substrate comprises aceramic layer at a bottom layer and a copper-coated layer at an upper layer, the shell comprises a shell body, an upper cover plate and lead terminals, the shell body wraps bottom surfaces and peripheries of the copper-coated ceramic substrate and the power regulation circuit components, the upper cover plate covers the top of the shell body, and the lead terminals are used for connecting the interior and the exterior of the shell body. The electromagnetic interference-prevention power regulation circuit integrated module has the beneficial effects that a power regulation circuit with relatively serious electromagnetic interference is completely sealed in the shell, the distribution parameter of a power device interconnection loop is reduced, and the electromagnetic radiation of the powerregulation circuit is effectively shielded; and with the adoption of a material with favorable heat conductivity, the thermal resistance between a power semiconductor component and the whole structureis reduced.

The invention provides magnetic conductive type organosilicone pouring sealant. The magnetic conductive type organosilicone pouring sealant is prepared from a component A and a component B, wherein the mass ratio of the component A to the component B is 1:1. The component A is composed of, by weight, 100 parts of vinyl silicone oil, 15-20 parts of nanometer zinc ferrite, 8-10 parts of reinforcing agent, 3-5 parts of fire retardant, 1-1.5 parts of coupling agent, 0.5-1 part of inhibitor, 3-4 parts of bulking agent, 7-8 parts of PPS, 2-5 parts of cross-linking agent and 1-3 parts of colorant. The component B is composed of, by weight, 100 parts of vinyl silicone oil and 1-2 parts of catalyst. The invention further provides a preparation method of the organosilicone pouring sealant. The organosilicone pouring sealant has good magnetoconductivity and can effectively shield electromagnetic radiation.

The invention belongs to the technical field of floor and relates to a water soluble electromagnetic wave shielding transfer printing ink and an electromagnetic radiation resistant floor prepared by using the same. The water soluble electromagnetic wave shielding transfer printing ink comprises the following raw materials in part by mass: 25 to 35 parts of acrylic emulsion, 15 to 19 parts of nanobarium ferrite magnetic powder, 20 to 35 parts of deionized water, 1 to 5 parts of alcohol ester-12, 10 to 15 parts of ethylene vinyl acetate (EVA) emulsion, 3 to 6 parts of polyethylene (PE) aqueouswax, 1 to 3 parts of aqueous leveling agent, and 0.1 to 1 part of aqueous defoamer. The electromagnetic radiation preventing effect of the ink is desirable and lasts for a long time. The electromagnetic radiation resistant floor consists of a wear-resistance layer, an electromagnetic radiation resistant layer, a substrate layer and a balance layer in turn from top down. The electromagnetic radiation resistant layer is printed by using the water soluble electromagnetic wave shielding transfer printing ink, can shield electromagnetic radiation and is safe, environmentally-friendly and long in service life.