873results about "Insulating bodies" patented technology

The invention relates to the technical field of high-voltage electrical equipment, and particularly discloses a high-insulating-property thermoplastic sleeve and a method for preparing the same based on a co-extrusion process, the surface of a nonlinear layer is wrapped with an insulating material, so that the corona discharge phenomenon is avoided; and meanwhile, the same thermoplastic material is adopted as the insulating layer (including the first thermoplastic layer and the second thermoplastic layer) material and the base material of the nonlinear layer, so that no obvious interface exists between the insulating layer and the nonlinear layer, charge accumulation is avoided, insulation failure is avoided, the insulation and voltage resistance of the sleeve is improved, and the operation reliability is improved.

The high-performance insulation blanket comprises a surface layer, an EVA adhesive layer and a surface layer which are sequentially arranged, and the surface layer and the EVA adhesive layer are attached in a calendering mode; the surface layer is prepared from the following raw materials in parts by weight: 45 to 55 parts of ethylene-vinyl acetate copolymer, 10 to 20 parts of natural rubber, 8 to 18 parts of PA6 short fiber, 7 to 10 parts of dopamine modified mica powder, 6 to 10 parts of MAH-g-EVA, 10 to 15 parts of flame retardant, 0.2 to 0.4 part of antioxidant, 0.8 to 1.2 parts of lubricant and 2 to 4 parts of coloring agent. In the surface layer formula system, under the synergistic effect of the natural rubber, the PA6 short fiber and the dopamine modified mica powder, the tear resistance and puncture resistance of the material are greatly improved, and meanwhile, the material has excellent comprehensive properties such as high temperature resistance, insulation, flame retardance and aging resistance, and is suitable for the field of high-requirement insulation protection.

The invention discloses an electric lightning arrester insulation shield capable of being installed without power outage and an installation method, and relates to the technical field of electric protection, the electric lightning arrester insulation shield comprises an insulation cover, an elastic automatic locking mechanism, an installation sheet and a reinforcing plate, the insulation cover is integrally formed, a turnover plate is connected to the lower ends of a left side plate and a right side plate, and the elastic automatic locking mechanism comprises a left locking module and a right locking module; the modules are connected through a pressure piece and a clamping piece through a connecting piece, a lock body part penetrates through a locking hole to achieve locking, during installation, the protective cover is driven by an insulating rod to be horizontally pushed into the top of the lightning arrester, a locking mechanism is extruded and triggered to achieve automatic locking, the protective cover is fixed to an exposed metal piece, and main insulation is not affected. Locking is reliable, the service life is long, operation is convenient, the device can be expanded to multiple fields, and safe operation of equipment is guaranteed.

The invention relates to a magnetic attraction insulation shield capable of being installed without power cut, which comprises a shell, the shell comprises a left shell and a right shell, the top end of the left shell is connected with the top end of the right shell, the upper parts of the left shell and the right shell are respectively provided with a connecting buckle, the connecting buckles are fixed on the surface of the left shell or the right shell, a connecting rope is also arranged above the shell, and the connecting rope is connected with the left shell and the right shell. One end of the connecting rope is connected with the connecting buckle on the surface of the left shell, the other end of the connecting rope is connected to the connecting buckle on the surface of the right shell, and the shells, the connecting buckles and the connecting rope are all made of insulating materials. The magnetic attraction insulation shield installed in an electrified mode is convenient and easy to install and high in efficiency.

The utility model relates to the technical field of solar cells, and particularly discloses a back contact cell assembly and a photovoltaic system, the cell assembly comprises a cell substrate, the back surface of the cell substrate is provided with a first grid line and a second grid line which are arranged in a staggered manner along a first direction and have opposite polarities; the confluence pieces comprise first confluence pieces and second confluence pieces, the first confluence pieces and the second confluence pieces are arranged in a staggered mode in the second direction, the first confluence pieces are electrically connected with the first grid lines, and the second confluence pieces are electrically connected with the second grid lines; the bus bar is electrically connected with the first bus member, and an insulating block is arranged between the bus bar and the second bus member; the insulating glue layer is arranged between the second grid line and the first bus piece, and in the second direction, the insulating glue layer comprises a first insulating part which continuously extends from the first bus piece to the direction of the adjacent second bus piece, and in the second direction, the insulating glue layer comprises a second insulating part which continuously extends from the second bus piece to the adjacent second bus piece; the sum of the distance from one end, away from the second bus piece, of the insulating block to the second bus piece and the width of the first insulating part is larger than the distance between the adjacent first bus piece and second bus piece. The reliability of the battery assembly can be improved, and meanwhile the production difficulty is reduced.

Device comprising at least a top-side hood (10) for receiving an electrical component, such as a terminal block, for attaching at least one electrical conductor, and a bottom-side base (14) which is provided with a bottom-side opening (16) for receiving another electrical component, such as an insulating candle, which can be electrically connected to the first electrical component, characterized in that the hood (10) and the base (14) are two separable components which, when assembled, form a cover (18) as a whole and which, by means of a height adjustment (20) with a locking device, assume such different positions relative to each other that differently designed electrical components in a predefinable mounting frame can be covered with only one cover (18).

The invention relates to the technical field of fluorosilicone materials, in particular to a glass fiber sleeve with an excellent voltage resistance function and a preparation method of the glass fiber sleeve. The glass fiber sleeve with the excellent voltage-resistant function comprises a glass fiber sleeve and a composite coating coated on the outer side of the glass fiber sleeve, the composite coating is obtained by thermocuring a coating material; the coating material is prepared from the following raw materials in parts by mass: 50 to 100 parts of fluorinated silicone rubber emulsion, 1 to 5 parts of bis (3-aminopropyl) terminated polydimethylsiloxane, 0.5 to 1.5 parts of furfuryl alcohol resin, 1 to 5 parts of epoxy resin, 1 to 5 parts of activated nano silicon dioxide, 1 to 3 parts of boron nitride nanowire, 1 to 2 parts of dopamine hydrochloride, 1 to 2 parts of dispersing agent and 10 to 30 parts of solvent. The invention can effectively ensure that the coating forms a compact cross-linked structure in the curing process, and can enhance the adhesive force of the coating, weaken the temperature difference between the surface and the interior, inhibit the heat accumulation effect and delay the degradation of the insulating property.

An improved telegraph pole double-porcelain-bottle anti-bird hard insulating sheath capable of being installed in an electrified mode comprises two porcelain bottle sleeves used for wrapping the tops of porcelain bottles, one side of each porcelain bottle sleeve is provided with an outer side electric wire sleeve used for wrapping an electric wire, and the other side of each porcelain bottle sleeve is provided with telescopic electric wire sleeves which are in butt joint with each other and are symmetrical to the outer side electric wire sleeves. The lower end of the porcelain insulator sleeve is provided with an opening corresponding to the upper part of the porcelain insulator, the lower edge of the outer wire sleeve and the lower edge of the telescopic wire sleeve are provided with a slit communicated with the opening at the lower end of the porcelain insulator sleeve, and the two edges of the slit are respectively provided with a butt joint edge extending downwards; a mounting plate is arranged on each porcelain insulator sleeve, and a mounting hole is formed in each mounting plate; the opposite sides of the two butt joint edges are connected with clamping plates through elastic bodies respectively. The insulating sheath is made of a hard insulating material. The utility model has the advantages that the wire clamp can be suitable for wires with larger or smaller diameters, the applicability is greatly improved, the requirement on the elasticity of raw materials is reduced, and the wire clamp can be made of harder insulating materials.

The invention relates to an adhesive technology based on a laminated spraying copper bar, and belongs to the technical field of copper bar production technologies, and the adhesive technology comprises the following steps: copper bar pretreatment: carrying out processing treatment on the copper bar according to the structural requirements of a design drawing; gluing and laminating are conducted, specifically, the surface of the spraying copper bar 1 and the surface of the insulating plate 2 are evenly smeared with adhesives, the adhesives are placed in an overlapped mode according to design requirements, and the adhesives make contact with one another and are tightly attached to one another; curing treatment is conducted, specifically, the stacked copper bars are put into a drying oven to be subjected to curing treatment; and in the performance test process, the sprayed copper bar is subjected to voltage withstanding alternating current for 10kv for 60s, so that no breakdown and no flashover are realized, and the partial discharge value is less than or equal to 10pC. The insulating plate needs to be selected with proper thickness and size according to electrical performance such as creepage distance and the like. The spraying thickness of the epoxy resin coated copper bar needs to be controlled according to insulation performance and the like. The finished adhesive copper bar has good electrical and insulating properties, and meets the requirements of the power industry for high-performance conductive parts.

The invention provides a button type signal feed-through for a beam position detector. The button type signal feed-through comprises a shell, a composite unit and an insulator. The composite unit comprises a button electrode and an inner conductor, and the button electrode is suitable for sensing an electromagnetic field signal generated by charged particle beams in the vacuum cavity; the inner conductor vertically and integrally extends from the center of the button electrode, a flange is arranged near one end, close to the button electrode, of the inner conductor, and the inner conductor is suitable for transmitting beam electromagnetic field signals. The insulator is sleeved on the inner conductor and comprises a first section cylinder and a second section cylinder, and the front end face of the first section cylinder is welded and fixed with the flange of the inner conductor; the second section of cylinder body extends outwards in the radial direction from the rear end of the first section of cylinder body, the circumferential outer surface of the second section of cylinder body is welded and fixed with the shell, and the insulator is suitable for fixed support and electrical insulation, so that smooth transition of transmission impedance and vacuum sealing are realized. The invention further provides a preparation method of the charged particle beam position detector and a charged particle beam position detector structure.

According to the invention the Grommet (14) is designed for a wall bushing (2) and for the sealed passage of a strand (12), in particular a cable, through an opening (10) in a wall (4). The wall (4) is especially a wall (4) of a dash panel of a motor vehicle. The grommet (14) having a grommet body (16) which extends in an insertion direction (E) and which has a proximal sealing section (18) and a distal sealing section (20), which, in the assembled state, receive the wall (4) between them, wherein the distal sealing section (20) is corrugated in the circumferential direction so that it is compressible and can be inserted through the opening (10) in the insertion direction (E). Preferably the distal sealing section (20) comprises a cap element (22) having a cap opening (23) and during assembly the grommet is inserted through the opening (10), while the cap opening (23) is oriented in the insertion direction (E). Afterwards the cap element (22) is folded over such that the cap opening (23) is oriented towards the wall (4) and a distal sealing lip (24) rests on a distal wall side (4B).

To provide a fixing structure of an insulating sheet in which the number of components and the number of assembling steps are small and fixing force is hardly reduced by heat, vibration, or the like, and to provide an insulating sheet capable of easily achieving the fixing structure of the insulating sheet, and a manufacturing method capable of easily manufacturing the fixing structure of the insulating sheet.SOLUTION: An insulating sheet according to the present invention is an insulating sheet that is fixed to an object to be protected and insulates and protects the object to be protected, the insulating sheet including a flat plate portion that is made of a resin material and extends in a flat plate shape, and a protruding molded portion that is molded so as to protrude in a protruding shape from the flat plate portion, in which an outer surface of the protruding molded portion includes an enlarged diameter portion that is enlarged in diameter from a base end portion toward a tip end portion of the protruding molded portion.SELECTED DRAWING: Figure 1

The invention relates to the technical field of high-voltage circuit insulating materials, in particular to a flexible insulating sling for high-voltage operation and a preparation method of the flexible insulating sling. The flexible insulating sling for high-voltage operation sequentially comprises an aramid fiber layer and a polytetrafluoroethylene layer from inside to outside, flame-retardant microcapsules are loaded on the surface of the aramid fiber layer, a core material of each flame-retardant microcapsule is polyphosphate, and a shell material of each flame-retardant microcapsule is acrylic acid modified organic silicon resin. According to the application, the polytetrafluoroethylene and the aramid fiber are compounded to obtain the insulating sling, and the insulating sling is excellent in mechanical property, small in stress deformation, safe and reliable in load bearing, soft in texture, small in bending radius and capable of preventing a hoisted object from being scratched, and the breaking strength of the insulating sling reaches 20-30cN / dtex.

The invention relates to the technical field of busbar connecting pieces, and discloses a laminated insulation design-based high-voltage-resistant CCS busbar connecting piece structure, which comprises an upper insulating layer, a conducting bar I, a middle insulating layer I, a conducting bar II, a middle insulating layer II, an FPC (Flexible Printed Circuit) and a lower insulating layer. According to the technical scheme of the utility model, the upper insulating layer, the first intermediate insulating layer, the second intermediate insulating layer and the lower insulating layer are all designed to be in the stacked design of the multiple layers of PET insulating films, and the insulating characteristics of the PET insulating films and the sufficient insulating distance and creepage distance formed by the stacking of the multiple layers are utilized. The CCS busbar connecting piece structure can effectively block abnormal conduction of current between different conductive parts or between different conductive parts and an external structure, effectively prevents insulation breakdown, provides a reliable insulation barrier for the whole CCS busbar connecting piece structure, meets the high-voltage-resistant use requirement, can enhance the overall mechanical strength of the CCS busbar connecting piece structure, and improves the service life of the CCS busbar connecting piece structure. And the device has the advantages of high reliability, stable structure and good heat dissipation performance.

The invention relates to a photovoltaic module and a production method thereof. The photovoltaic module comprises a plurality of battery pieces and a welding strip connected with the plurality of battery pieces. The battery piece comprises a battery main body, grid lines, welding points, an insulating layer and conductive adhesive, the grid lines are distributed on the surface of the battery main body, the welding points and the conductive adhesive are respectively distributed on the grid lines and are conductively connected with the grid lines, the insulating layer covers the grid lines along the grid lines, the welding points and the conductive adhesive are exposed out of the insulating layer, and the welding points and the conductive adhesive are respectively connected to the welding strips. According to the photovoltaic module and the production method thereof, the conductive adhesive is distributed on the grid line, the welding strip is pre-fixed by using the conductive adhesive when the welding strip is welded, displacement and pseudo soldering of the welding strip in the welding process can be prevented, and the welding strip is further connected with the welding point, so that the series welding tension can be effectively improved, and the reliability of the module is improved.

The invention provides a gas-insulated compact diode valve converter system, and the system comprises a converter valve which comprises a plurality of diode modules, each diode module comprises a plurality of diode chips and a plurality of radiators, and each diode chip and each radiator are alternately attached to each other, and are used for cooling each diode chip; an insulating layer is arranged between any adjacent diode chip and the radiator and is used for realizing device-level insulation of the converter valve; and an insulating isolation plate is arranged between any two adjacent diode modules, and is used for realizing module-level insulation of the converter valve. The converter valve is accommodated in the insulating gas box, and the insulating gas box is filled with insulating gas and is used for realizing system-level insulation of the converter valve; wherein the insulating gas comprises any one of SF6, dry air, N2 and SF6 mixed gas. Through the current conversion system provided by the invention, the problems of low equipment integration level, low insulation level, poor heat dissipation performance and the like of the current current conversion system are solved.

Disclosed in the present disclosure are a back contact module and a manufacturing method. The module comprises: a cell string; busbar ribbons comprising first busbar ribbons and second busbar ribbons; an insulating layer on the side of the busbar ribbons facing away from cells; a busbar on the side of the insulating layer facing away from the cells; and interconnect ribbons electrically connected to the busbar and electrically connected to one of the first busbar ribbons and the second busbar ribbons.

A hollow core insulator is provided for housing an electronics module for use in power transmission and distribution lines, the hollow core insulator comprising: a fibre-reinforced plastic (FRP) core which includes a first flange, a second flange and a body therebetween, the insulating core defining a bore, wherein the flanges and body are integral and the first flange and the second flange each include a face and a plurality of threaded apertures extending into the face; and a silicone mold which encases the body and includes a series of sheds extending outward from the body, wherein at least one shed includes a perimeter lip.

The invention relates to the technical field of electrical equipment, in particular to a moisture-proof impregnated paper composite insulating sleeve and a preparation method and application thereof. The moisture-proof impregnated paper composite insulating sleeve provided by the invention comprises an impregnated paper capacitor core body and a moisture-proof enhancement layer on the outer surface, the moisture-proof reinforcing material comprises at least one of glass fiber, polyester and polyolefin, and the polyester comprises polyethylene glycol terephthalate; the impregnated paper capacitor core body comprises a central conductive tube, impregnated paper and a capacitor plate; the impregnated paper and the capacitor plates are alternately coated on the outer surface of the central conductive tube from inside to outside, and the impregnated paper or the capacitor plates are arranged on the outermost layer of the impregnated paper capacitor core body. According to the invention, the moisture-proof reinforcing layer is arranged on the outer surface of the impregnated paper capacitor core body, so that moisture in air during storage and trace moisture in transformer oil during operation can be effectively prevented from invading the impregnated paper capacitor core body, the capacitor core body is prevented from being affected with damp, the electrical property is reduced, the mechanical bending strength is enhanced, and the service life of the capacitor sleeve is prolonged.

The invention discloses a preparation process of a flexible stretchable surface electromyographic motion sensing integrated electrode, and particularly relates to the field of flexible electronic technology and biomedical engineering.The electrode adopts thermoplastic polyurethane or polydimethylsiloxane as a substrate material, and conductivity and fatigue resistance are improved through doping of graphene quantum dots. The electrode comprises a myoelectricity sensing layer and a motion sensing layer, wherein the myoelectricity sensing layer is constructed through electrostatic spinning of a TPU nanofiber net and spraying of liquid metal, and the motion sensing layer forms a snakelike microcrack structure through silk-screen printing of a silver nanowire / TPU mixed material. The honeycomb-shaped insulating layer is used for isolating bimodal signals, and long-acting antibiosis and air permeability are achieved in combination with the self-repairing adhesion layer. After packaging, a Bluetooth 5.0 chip and a miniature lithium battery are integrated, and wireless signal transmission is supported.

The invention discloses a high-frequency high-voltage power supply system, and relates to the technical field of high-frequency high-voltage power supplies. An energy conversion assembly in the high-frequency high-voltage power supply system is used for converting input alternating current into high-voltage electric energy; the energy conversion assembly is arranged in the insulating part, and the insulating part is used for electrically isolating the energy conversion assembly; the detection device is arranged in the insulating part and is adjacent to the energy conversion assembly; the detection device is used for detecting parameters of the energy conversion assembly; the control device is connected with the energy conversion assembly and the detection device, and the control device is configured to regulate and control working parameters of the energy conversion assembly based on at least one of the temperature parameter, the current parameter and the voltage parameter. By applying the high-frequency high-voltage power supply system disclosed by the invention, a closed-loop control system for controlling and adjusting based on the detection result can be constructed, the adjusting capability of the high-frequency high-voltage power supply system is improved, the problems caused by partial discharge or local temperature rise are reduced, the stability of the system is improved, and the service life of the system is prolonged.

The utility model discloses an insulating cover of a distribution network line lightning arrester. The insulating cover comprises a left half cover body and a right half cover body, one side of the left half cover body and one side of the right half cover body are connected with each other through a hinge structure, and the left half cover body and the right half cover body can rotate based on the hinge structure so that the left half cover body and the right half cover body can deviate from each other to be separated or can be folded and closed with each other; when the left half cover body and the right half cover body are mutually folded and closed, a first open hole is formed in the bottom, and the first open hole can fix the insulating cover between the umbrella skirts of the lightning arrester. Meanwhile, the left half cover body and the right half cover body can be mutually connected and locked through the lock catch structures arranged on the left half cover body and the right half cover body. According to the utility model, the left half cover body and the right half cover body can adopt an integrated modular design, the structure is simple, the left half cover body and the right half cover body can be connected and locked with each other through the lock catch structure during installation, and auxiliary fasteners such as pins are not needed, so that the installation is relatively convenient and rapid, and the live installation can be directly carried out when necessary.

The utility model belongs to the technical field of plasma rotating electrode powder manufacturing equipment, and relates to a vacuum dynamic sealing structure of a plasma gun for powder manufacturing, which comprises an external powder blocking module and a dynamic sealing module, the external powder blocking module consists of a first powder blocking plate, a powder blocking ring and an insulating powder blocking plate, the first powder blocking plate is fixed at the top of a plasma gun body to form an arc-shaped shielding surface, and the dynamic sealing module is fixed at the top of the plasma gun body. The powder retaining ring coaxially sleeves the positive electrode of the plasma gun body and forms an annular gap type powder blocking structure with the insulating powder retaining plate; the dynamic sealing module is sequentially provided with a dynamic sealing installation metal cylinder, an insulating cylinder and a sealing assembly from outside to inside in the radial direction of the plasma gun body, the insulating cylinder and the dynamic sealing installation metal cylinder form a step-shaped sealing structure, and vacuum sealing and electrical isolation are achieved between the dynamic sealing module and the external powder blocking module through bakelite and an O-shaped sealing ring. The vacuum dynamic sealing structure provided by the utility model has the advantages of powder isolation, reliable sealing, no burning loss short circuit and no need of vacuum grease auxiliary sealing lubrication.

The invention relates to the technical field of high-voltage electrical equipment, and particularly discloses a preparation method of a high-performance polypropylene casing pipe, the method adopts a segmented pouring method to prepare a segmented nonlinear layer structure, from the middle to two ends of a nonlinear layer, the doping concentration gradient of a nonlinear functional filler is controlled to be reduced, and the high-performance polypropylene casing pipe is prepared. And the conductivity difference between the non-linear layer and the polypropylene insulating layer is reduced, so that the phenomenon of electric field concentration at the two ends of the non-linear layer is reduced, and the insulativity and the operation reliability of the bushing are improved.

The invention discloses an insulating boron nitride heat-conducting gasket and application thereof, and belongs to the technical field of heat-conducting materials. The preparation method comprises the following steps: S1, preparing boron nitride powder, a volatile organic solvent and silica gel into a BN dispersion liquid; s2, coating a substrate with the dispersion liquid; s3, drying the wet film to obtain a BN film; s4, the BN film is torn down and cut into BN thin strips; s5, the BN thin strips are flatly laid in the polytetrafluoroethylene grooves to be fixed; s6, addition type silica gel is injected into the groove to be cured, a primary BN sheet is formed, and the primary BN sheet is repeatedly prepared; s7, coating addition type silica gel on the upper surface and the lower surface of each primary BN sheet, stacking the primary BN sheets into a mold, and pressing and curing the primary BN sheets to form a BN block; and S8, cutting the BN block along the direction perpendicular to the arrangement direction of the BN thin strips to obtain the insulating boron nitride heat-conducting gasket. The insulating boron nitride heat-conducting gasket has the excellent properties of high orientation degree, high heat conductivity, controllable structure, stable performance, excellent insulativity, flexibility and the like.

This application relates to a battery structure and a photovoltaic module. The battery structure includes: a battery cell; an adhesive portion including multiple adhesive dots spaced apart along a first direction on the surface of the battery cell; and a conductive component, the conductive component having multiple first contact areas and multiple second contact areas on its surface facing the battery cell, the multiple first contact areas and multiple second contact areas being staggered along the first direction; wherein, the conductive component is fixed to the adhesive dots via the first contact areas, the adhesive dots electrically isolate the battery cell and the conductive component at the first contact areas, and the conductive component makes electrical contact with the battery cell outside the adhesive dots via the second contact areas, thus forming a discontinuous contact between the conductive component and the battery cell. This approach minimizes the occurrence of hot spot effects during the practical application of the photovoltaic module, while also reducing manufacturing costs, ensuring process stability, simplifying the manufacturing process, and guaranteeing the reliability of the photovoltaic module.

The invention discloses a hardness self-adaptive adjustment high-voltage insulation shielding cover which comprises a composite insulation cover body, the composite insulation cover body sequentially comprises an outer insulation layer, a middle magnetorheological elastomer interlayer and an inner attaching layer from outside to inside, and a miniature electric field sensor is embedded in the surface of the outer insulation layer and used for monitoring the intensity of a surrounding electric field in real time; the flexible electromagnetic coil is embedded in the middle magnetorheological elastomer interlayer; the intelligent induction energy storage module is integrated in a lightweight waterproof box at the top of the composite insulation cover body and comprises a magnetic field controller, a micro super capacitor, an electric field signal processor and a pressure signal converter, and the magnetic field controller is connected with the flexible electromagnetic coil through a wire; through the three-layer structure design of the composite insulation cover body and corresponding material selection, double guarantee of insulation protection and self-adaptive fitting is realized.

The utility model relates to the technical field of solar cells, and particularly discloses a back contact cell assembly and a photovoltaic system, the cell assembly comprises a cell substrate, the back surface of the cell substrate is provided with first grid lines and second grid lines which are staggered along a first direction and opposite in polarity, and the first grid lines and the second grid lines extend along a second direction. First areas and second areas are arranged on the back face of the battery substrate in a staggered mode in the second direction, the first direction and the second direction are arranged in a crossed mode, the confluence pieces comprise first confluence pieces and second confluence pieces which are arranged in a staggered mode in the second direction, and the first confluence pieces are electrically connected with the parts, located in the first areas, of the first grid lines; the insulating rubber layer comprises a first insulating part and a second insulating part, the first insulating part covers the part, located in the second area, of the first grid line, the second insulating part covers the part, located in the second area, of the second grid line, the bus bar is electrically connected with the first bus piece, and the bus bar is electrically connected with the second bus piece. An insulating block is arranged between the bus bar and the second bus piece, and the breakdown voltage resistance of the insulating block is larger than that of the insulating adhesive layer. The battery assembly is high in reliability, and the production difficulty can be reduced.

The application relates to the technical field of insulating materials, and particularly discloses a mica material composition, a mica tube and a preparation method and application thereof. The mica material composition provided by the application comprises the following components in parts by weight: 75-85 parts of mica powder, 35-55 parts of polyethylene, 45-55 parts of silicon powder and 25-35 parts of organic silica gel; the application also provides a mica tube prepared by using the mica material composition, and a preparation method of the mica tube, which comprises the following steps: extruding the mica material composition at an extrusion temperature of 170-190 DEG C, and then air-cooling at 20-30 DEG C for greater than or equal to 20 min to obtain a mica tube preform; and through drying, the mica tube is obtained. The mica tube is prepared by extruding the mica material composition, the mica tube is seamless, the mica tube has good insulation at room temperature and good high-temperature fire resistance, and can meet the use requirements of an electric shock rod or a waterproof sleeve tube insulating layer.

The guide rod type high-current pure porcelain sleeve comprises an upper fastener, a porcelain insulator, a conducting rod, a limiting plate and a positioning seat, the inner wall of the upper end opening of the porcelain insulator extends inwards to form a limiting step, the conducting rod is arranged in the porcelain insulator in a penetrating mode, the two ends of the conducting rod extend out of the porcelain insulator, the limiting plate is arranged on the conducting rod in a sleeving mode, and the positioning seat is arranged on the limiting plate. The upper fastener is fixed with the conducting rod, the limiting plate and the upper fastener are arranged on the inner side and the outer side of the limiting step, the conducting rod is axially positioned on the porcelain insulator, the positioning seat is fixed on the conducting rod, and the outer wall surface of the positioning seat is attached to the inner wall surface of the porcelain insulator. The utility model has the advantages of more reasonable integral assembly, more reliable structural sealing, good anti-leakage effect and good use effect.