1821results about "Insulating bodies" patented technology

The invention provides a back contact battery, a battery assembly and a photovoltaic system. The back contact battery comprises a battery substrate, a plurality of first fine grids and a plurality of second fine grids; the battery substrate comprises a first edge area and a middle area which are sequentially arranged along a first direction; the first fine grids and the second fine grids extend along a second direction, and the second direction is crossed with the first direction; in the middle region, the first fine grids and the second fine grids are alternately arranged along the first direction; in the first edge region, the plurality of first fine grids are sequentially arranged along the first direction; and the second fine grid avoids the first edge region. According to the back contact battery provided by the embodiment of the invention, the second fine grid avoids the first edge region, so that when the back contact battery is applied to the battery assembly, the bus bar can be arranged in the first edge region, the battery assembly does not need to arrange an isolating strip between the bus bar and the back contact battery, and the thickness of the battery assembly can be reduced.

The invention relates to the technical field of solar cells, and provides a back contact cell, a cell assembly and a photovoltaic system, in the back contact cell, first bus grid lines and first connecting grid lines are continuous at a first edge serial connection area and a second edge serial connection area, the first connecting grid line is located between the two first bus grid lines, and the second connecting grid line is located between the two first bus grid lines. The first insulating layer is arranged on the portion, corresponding to the first edge serial connection area, of the first bus grid line, the second insulating layer is arranged on the portion, corresponding to the second edge serial connection area, of the first connecting grid line, and the first auxiliary connecting line is connected with at least two second grid lines located on the same side of the first bus grid line set. The second auxiliary connecting line is connected with the first bus grid line located on one side of the first connecting grid line and at least one first grid line adjacent to the first bus grid line. Therefore, through special design of the electrode structure, the cold solder joint influence caused by the insulating layer can be reduced or even eliminated, so that the electrical performance of the back contact battery is improved.

A direction in which a wire harness (W) passes inside a grommet (10) according to one aspect of the present disclosure is defined as an insertion direction (D). The grommet (10) includes: a first member (11) that includes a seal portion (36) configured to come into contact with a vehicle body panel (P); a second member (12) that is attached to one side of the first member (11) in the insertion direction (D), and includes a second tubular portion (43) into which the wire harness (W) is inserted; and a third member (13) that is attached to the other side of the first member (11) in the insertion direction (D), and includes a third tubular portion (52) into which the wire harness (W) is inserted.

The utility model discloses a solar cell and a photovoltaic assembly, the surface of a substrate of the solar cell is provided with a plurality of grid line electrodes, each grid line electrode comprises a plurality of fine grid lines arranged at intervals along a first direction, and the polarities of two adjacent fine grid lines are opposite; the fine grid lines are provided with conductive connecting parts; along the first direction, the plurality of conductive connection parts of the plurality of fine grid lines with the same polarity form conductive connection groups, and the plurality of columns of conductive connection groups are arranged at intervals along the second direction; the solar cell further comprises a plurality of insulating pieces covering the area where the conductive connecting sets are located, and gaps exist between the insulating pieces and the conductive connecting parts. In the thickness direction of the substrate, the thickness of the insulating part is smaller than that of the conductive connecting part. The thickness of the insulating part is lower than that of the conductive connecting part, so that the possibility that the welding strip is influenced by the insulating part when being connected with the conductive connecting part is reduced, and the overall working efficiency of the solar cell is improved.

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 present application discloses a back-contact cell and photovoltaic module. The back-contact cell includes a cell body, including a first surface and a second surface arranged opposite to each other; a plurality of first fine grids and a plurality of second fine grids arranged on the first surface; the first fine grids and the second fine grids extend along the first direction and are alternately spaced in sequence along the second direction; the first direction intersects the second direction; a plurality of first insulating blocks are spaced along the second direction and respectively cover the second fine grids; along the second direction, the distance between the edges of adjacent first insulating blocks is D1, and D1 ≥ 80 μm. The distance between two adjacent first insulating blocks along the second direction is large enough, so that a safe distance for the slurry to flow is reserved, thereby avoiding the situation where the slurry forming the first insulating block flows and covers the first fine grid, ensuring the stability of the electrical connection between the first fine grid and the first conductive member, and thus improving the stability of the back-contact cell performance.

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 belongs to the technical field of insulating materials, and particularly discloses an insulating material for an insulating soft sling for extra-high voltage working and a preparation method and application of the insulating material. The insulating material is prepared by mixing ZIF-8 particles and polytetrafluoroethylene powder according to a specific mass ratio and utilizing a dry process. And soaking and coating by using a polydimethylsiloxane (PDMS) solution to obtain a double-layer composite insulating material, and cutting and weaving to obtain the insulating soft sling. The high porosity and excellent gas adsorption performance of ZIF-8 and the insulating performance of PTFE and PDMS are combined, and the comprehensive performance of the insulating material is improved. The introduction of the ZIF-8 particles enhances the mechanical strength and the gas barrier property of the material, the PTFE and the PDMS provide good insulativity and corrosion resistance, and the synergistic effect of the PTFE, the PDMS and the ZIF-8 particles realizes the high-performance application of the insulating sling in a complex environment. Meanwhile, the preparation method and device are easy to operate and low in cost, and large-scale production can be achieved.

A grommet according to one aspect of the present disclosure includes: an annular mounting portion that is to be fixed to a surrounding portion of an insertion hole of a vehicle body panel; and a tubular stress-absorbing portion that includes a tubular side wall that extends from an inner circumferential rim portion of the mounting portion toward one side in an axial direction, and a bottom wall that partially closes off the tubular side wall at a front end of the tubular side wall. Furthermore, the grommet includes tubular insertion portions that are provided integrally with the bottom wall, and that cover the outer circumferences of wire harnesses inserted into the insertion hole. The mounting portion includes an annular seal portion that comes into close contact with the surrounding portion of the insertion hole of the vehicle body panel. The side wall is flexible.

The invention provides a shell for foldable electronic equipment and the foldable electronic equipment, the shell comprises a middle plate, the middle plate comprises a first middle plate and a second middle plate which are connected, and the first middle plate and the second middle plate are made of different materials. The first middle plate and the second middle plate are matched with each other to form a rotating shaft containing area and a non-rotating-shaft containing area on the middle plate, at least part of the first middle plate forms at least part of the non-rotating-shaft containing area, and at least part of the second middle plate forms at least part of the rotating shaft containing area. The middle plate of the shell provided by the invention adopts a split structure, and different materials are selected, so that stable chemical performance can be taken into account while the weight of the machine body is reduced.

An article including at least one first metallic layer, at least one dielectric layer; and at least one second metallic layer is disclosed. The at least one dielectric layer can include at least one of (i) a photo-initiator, (ii) an oxygen inhibition mitigation composition, (iii) a leveling agent, and (iv) a defoamer.

The utility model belongs to the field of porcelain sleeves for electrical equipment, and specifically relates to a porcelain sleeve with shielding and voltage-equalizing functions and a lightning arrester porcelain sleeve. The porcelain sleeve includes a porcelain part and a shielding cover arranged inside the porcelain part; the shielding cover is arranged on the upper inner wall of the porcelain part; or, the shielding cover is arranged on the lower inner wall of the porcelain part; or, there are two shielding covers; the two shielding covers are respectively arranged on the upper inner wall and the lower inner wall of the porcelain part. The utility model arranges the shielding cover on the porcelain part, installs the shielding cover inside the porcelain part, reduces the installation space, and is simple to install and simple in layout.

The utility model is suitable for the technical field of main-grid-free back contact cells, and provides a main-grid-free back contact cell, a cell assembly and a photovoltaic system. The main-grid-free back contact battery comprises a main grid line area and a plurality of edge grid line areas, wherein the main grid line area is positioned between two edge grid line areas; the fine grid in the edge grid line area is provided with a plurality of first insulating glue and a plurality of first connecting structures, the first connecting structures electrically connect the fine grid with the welding strip, and the first insulating glue electrically isolates the fine grid from the welding strip; wherein the area of the single first insulation paste is larger than that of the single first connection structure. According to the main-grid-free back contact battery, the area of the first insulation paste in the edge grid line area is larger than the area of the first connection structure, so that larger electrical isolation is provided for the grid lines and the welding strips in the edge grid line area, the short circuit problem is prevented, and the effect of improving the stability of the main-grid-free back contact battery is achieved.

The present application provides a heat sink process and a heat sink component, comprising the following steps: S1. punching an AlN-SiC ceramic substrate to obtain an AlN-SiC ceramic substrate with blind holes, and filling the blind holes with metal slurry to obtain a composite substrate; S2. in-situ depositing TiAlN layers on both sides of the composite substrate to obtain a composite substrate; S3. coating a photoresist layer on the side of the composite substrate with the blind hole and patterning it, and then electroplating a Cu layer, an Ag layer, and a graphene / nanosilver composite layer in sequence; coating a heat dissipation insulating layer on the side of the composite substrate without the blind hole to obtain an electroplated plate; S4. stripping the photoresist of the electroplated plate to obtain a heat sink component; the heat sink component obtained in the present application is conductive on one side and insulated on the other side, and has the advantages of good heat dissipation performance and good conductive performance.

The invention provides a power assembly and a motor controller, the power assembly comprises a power module, a radiator and an insulating part, the power module comprises a leading-out terminal, the insulating part is arranged on the surface of one side, facing the power module, of the radiator, and in the thickness direction of the power assembly, the projection of the insulating part covers the projection of the leading-out terminal on the radiator; the projection of the leading-out terminal on the radiator is covered by the projection of the insulating part in the thickness direction of the power assembly, the safety electrical insulation between the leading-out terminal and the radiator is ensured through the insulating part, and the electrical insulation performance between the power module and the radiator is improved.

A water stop member includes an annular main body that is coaxially brought into contact with an annular wall surface on a circumference portion side of a through-hole of a flange of a base member, an annular outer circumferential lip that is protruded toward the circumference portion, bend-deforms at the attachment completion position, and is brought into close contact with an annular plane of the circumference portion over one circumference, and an annular inner circumferential lip protruded toward the circumference portion in such a manner as to get closer to a hole axis of the through-hole as coaxially getting closer to the circumference portion from an inner circumference portion side than the outer circumferential lip of the main body, bend-deforms at the attachment completion position, and is brought into close contact with the annular plane side of the circumference portion over one circumference.

The invention relates to the technical field of electronic materials, and discloses a multi-layer shielding type insulating sheet, which comprises a shielding layer used for shielding electromagnetic interference and in direct contact with an insulating layer; the insulating layer is used for electric insulation and is tightly connected with the shielding layer and the heat dissipation layer; the heat dissipation layer is used for heat conduction and is arranged on the close side of the insulating layer and the buffer layer; the buffer layer is used for providing mechanical buffer and structural support and is attached to the heat dissipation layer and the surface coating; the surface coating is used for protecting the material surface and arranged on the outer surface of the buffer layer, and the shielding layer is made of one or more of copper foil, aluminum foil and a graphene coating. By adopting the copper foil, the aluminum foil or the graphene coating as the shielding layer, electromagnetic interference from the outside can be effectively shielded, in an experiment, the electromagnetic shielding effectiveness of the insulating sheet can reach 95 dB or above, the insulating sheet particularly shows excellent electromagnetic shielding performance in a high-temperature and high-vibration environment, and stable operation of an internal circuit and equipment is ensured.

The invention relates to the technical field of high-voltage bushings, in particular to a 72.5 kV impregnated paper high-voltage bushing which comprises a sheath layer, an insulation paper layer, an impregnation medium, a flexible supporting structure, a temperature control layer, a self-healing insulation medium and a connecting end. The sheath layer is made of aluminum alloy and is used for providing mechanical protection and support; the insulation paper layer adopts multi-layer high-elasticity polyester impregnated paper, so that excellent electrical insulation performance is provided; the impregnation medium is selected from nano reinforced silicone oil and is uniformly filled between the insulation paper layers, so that the insulation performance is enhanced, and the moisture-proof and anti-pollution capacities are improved. The flexible supporting structure comprises a honeycomb-shaped FRP supporting layer and a shape memory alloy connecting piece, mechanical stress generated in transportation, installation and long-term operation can be effectively absorbed, and the structural integrity is kept under the complex environment such as foundation settlement or temperature change. The high-voltage cable has the advantages of high insulating property, high mechanical strength, excellent environmental adaptability and self-repairing capability, is suitable for transformer substations, power transmission lines and other high-voltage electrical equipment, and has wide application prospects.

The invention relates to the technical field of new energy materials, in particular to a perovskite solar cell and a preparation method thereof. The preparation method comprises the following steps: A) coating a conductive substrate with electron transport layer slurry, and heating and annealing to form an electron transport layer; coating the electron transport layer with the insulating layer slurry, and drying to form an insulating layer; coating the carbon slurry on the insulating layer, heating and annealing to form a carbon electrode, and obtaining a blank device without perovskite; the preparation raw materials of each sizing agent are limited; b) dropwise adding a perovskite precursor solution to the carbon electrode of the blank device, and after the perovskite precursor solution fully permeates into the carbon electrode, the insulating layer and the electron transport layer, annealing to obtain a perovskite-containing device; and C) covering a back plate on the bottom electrode of the obtained device, connecting a lead, and smearing a sealant to obtain the mesoporous perovskite solar cell. The perovskite solar cell has the advantages of high leakage resistance, no internal short circuit and high photoelectric conversion efficiency.

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 present application relates to the technical field of solar cells, and provides a back-contact cell, a cell assembly, and a photovoltaic system. In the back-contact cell, the first busbar and the first connecting grid are both continuous at the first edge series connection area and the second edge series connection area, the first connecting grid is located between two first busbars, the first insulating layer is arranged on the portion of the first busbar corresponding to the first edge series connection area, the second insulating layer is arranged on the portion of the first connecting grid corresponding to the second edge series connection area, the first auxiliary connecting wire connects at least two second grids located on the same side of the first busbar group, and the second auxiliary connecting wire is connected to the first busbar located on one side of the first connecting grid and at least one first grid adjacent to the first busbar. In this way, by specially designing the electrode structure, the influence of the cold solder joint caused by the insulating layer can be reduced or even eliminated, thereby improving the electrical performance of the back-contact cell.

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.

The invention relates to the technical field of coatings, in particular to an insulating coating as well as a preparation method and application thereof. The insulating paint provided by the invention comprises the following components in parts by weight: 20-60 parts of epoxy resin; the epoxy resin is selected from one or more of bisphenol A epoxy resin E-39, bisphenol A epoxy resin E-44, bisphenol A epoxy resin E-51, phenolic resin F-51 and phenolic resin F-44; 20-50 parts of an anhydride curing agent; the anhydride curing agent is selected from one or more of an HY 1235 anhydride curing agent and an EK 860 anhydride curing agent; 5-25 parts of a toughening agent; 5-15 parts of a reinforcing material; 10 to 20 parts of a diluent; and 0.1-2 parts of an accelerant. The insulating paint provided by the invention is excellent in insulating property, mechanical property, environment-friendly property and construction property through matching of the specific epoxy resin and the specific anhydride curing agent, does not contain a volatile solvent, and is specially designed for spraying the surface of a dry sleeve.

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 embodiment of the invention provides a connecting assembly for a flexible neural electrode and a flexible neural electrode kit. The flexible neural electrode comprises a near-end contact part, the near-end contact part comprises at least one near-end contact, a through hole is formed in the position of the near-end contact, and the through hole is used for exposing a conductive layer at the position of the near-end contact; the connecting assembly comprises a connecting terminal, the connecting terminal comprises a first connecting component, the first connecting component comprises at least one conductive needle, and the conductive needle can be inserted into the through hole and is electrically connected with the near-end contact through the conductive layer exposed in the through hole. According to the connecting assembly, reliable electric connection between the flexible neural electrode and the external equipment can be achieved, meanwhile, the multi-channel and high-density connection requirements are met, and the stability and adaptability of the structure are improved.

The invention discloses an electric connector of a cable, and aims to provide a high-insulation wet-plugging pin type electric connector which has a good sealing effect and an insulation effect in a severe environment, is convenient to produce and process, is low in production cost, and can be used for a long time in a deep water environment, and a manufacturing method of the high-insulation wet-plugging pin type electric connector. According to the technical scheme, a three-stage sealing structure is formed by a sealing assembly, a sealing gasket at a groove of a locking section and an insulating sealing ring on a fixing sleeve, and a pouring sealant is filled in a pouring cavity of the sealing assembly and cured to form a three-dimensional protective layer, so that a permeation path of liquid can be effectively blocked; meanwhile, a dynamic compensation sealing interface composed of a contact pin sleeve, a cable sleeve and pouring sealant is axially formed at the contact pin assembly, pressure self-adaptive sealing is achieved in the radial direction through multiple layers of sealing rings, the requirements of complex and severe working conditions such as deep sea detection and oil and gas wells are met, and the cable electric connector is suitable for the technical field of cable electric connector machining.

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.

To provide technology capable of facilitating insertion of a wire harness into a grommet.SOLUTION: A grommet 10 comprises a cylinder part 12 into which a wire harness 82 is inserted. The cylinder part 12 comprises: a first cylinder part 14 formed with a fitting groove 16 into which a peripheral part of a hole of a vehicle body is fitted on the outer surface; and a second cylinder part 20 communicating with the first cylinder part 14. The second cylinder part 20 comprises a spiral bellows cylinder part 22 in which a bellows part having a trough part 24 and a crest part 26 spirally extends around an axis of the cylinder part 12. An inner diameter of the first cylinder part 14 is larger than an inner diameter of the spiral bellows cylinder part 22.SELECTED DRAWING: Figure 3