47results about How to "Improve insulation reliability" patented technology

The invention relates to a resin composition and application thereof. The resin composition comprises the following components: aminophenol trifunctional epoxy resin, amino tetrafunctional epoxy resin, phenol dicyclopentadiene epoxy resin, phenoxy resin, nitrile rubber modified epoxy resin and polyfunctional hydroxyl acrylic resin. The six components are compounded, the glass transition temperature of a resin system is increased synergistically, the flexibility, heat resistance and pressure resistance of the resin composition are improved, the excellent insulation reliability of the resin composition is kept under the high-temperature condition, and the application requirements of 3D special-shaped processing can be met when the resin composition is applied to an aluminum-based copper-clad laminated board.

The embodiment of the present application provides a motor and a stator thereof and an electric device. The stator includes a stator core and a stator winding arranged on the stator core, the inner wall of the stator core is provided with a plurality of winding slots, and the stator winding includes a conductor inserted in the plurality of winding slots. The stator winding includes a plurality of phase windings, and each phase winding includes a first branch and a second branch.

The high-voltage winding comprises a winding body, a high-voltage coil and a high-voltage insulating layer, a wire is wound on the winding body to form the high-voltage coil, the high-voltage coil comprises a plurality of sections of coils, and the high-voltage insulating layer wraps the high-voltage coil and the winding body; a supporting piece is arranged between any two adjacent sections of coils and comprises a plurality of supporting blocks and a fixing ring, a plurality of first clamping grooves are formed in the fixing ring, and the supporting blocks are fixed to the fixing ring through the first clamping grooves. The high-voltage winding is provided with the supporting piece used for fixing the relative position of the coil, and the coil is prevented from displacing in the moving transportation, mold assembling and forming stages of the high-voltage winding. The utility model further discloses the dry-type transformer.

The utility model provides a kind of current transformer and GIS, belong to high voltage switch field.The current transformer includes mutual inductor cylinder and flange, the outside of flange is equipped with gasket by fastener, the height of mutual inductor cylinder protruding from the outside of flange is greater than the height of fastener and gasket protruding from the outside of flange, one end of mutual inductor cylinder is provided with tangent outside fillet and inside fillet passing through spacer ring, the radius of inside fillet is ten times to fifteen times of the radius of outside fillet, the junction of inside fillet and mutual inductor cylinder inside surface is located between the outside surface and inside surface of flange.The GIS includes the current transformer described above.The utility model dispenses with shielding ring, but by the design and optimization of mutual inductor cylinder structure, the end of mutual inductor cylinder can replace shielding ring and play the role of shielding isolation between conducting rod and gasket, screw.

The invention relates to the technical field of batteries, and discloses a pole column and a forming process thereof, a battery cell cover plate assembly and a battery cell. The pole forming process comprises the following steps: stamping and blanking a conductive composite board along a Z direction to obtain a pole body; wherein the pole body comprises a first conductive section and a second conductive section; wrapping and limiting the first conductive section, and extruding and expanding the local part of one end, far away from the first conductive section, of the second conductive section along the Z direction, so that an annular flange is formed on the side wall of the second conductive section on the X-Y plane; stamping and stretching the local part of the annular flange to enable the free end of the annular flange to form a pole turnup; wherein the pole turnup comprises a first turnup and a second turnup which are connected with each other, the first turnup extends towards the direction far away from the second conductive section along the Z direction, the first turnup and the first conductive section are arranged at an interval, and the second turnup extends towards the direction far away from the first conductive section. The pole prepared by the invention can reduce heat transferred to the upper plastic, and the insulating property of the pole is guaranteed.

The utility model relates to a kind of three-phase voltage transformers of compartment, including shell and first, second single-phase mutual inductor, the top of shell is arranged three-phase, each phase includes a root of fusing tube, shell also includes three internal fusing tubes, the inner wall of the tube bottom of each internal fusing tube is arranged with spring contact finger, fuse is placed in tube, second nut is installed in tube mouth, the primary winding of first, second single-phase mutual inductor is electrically connected with first to fourth electrically conductive pole respectively, define three fusing tubes as first to third fusing tube, the other end of first electrically conductive pole is electrically connected with the spring contact finger of first fusing tube, the other end of second electrically conductive pole, third electrically conductive pole is electrically connected with the spring contact finger of second fusing tube, the other end of fourth electrically conductive pole is electrically connected with the spring contact finger of third fusing tube. Utilize a kind of three-phase voltage transformers of compartment designed by the utility model, can solve the problem of traditional three-phase voltage transformer common fusing tube, compact structure, increased operation and maintenance difficulty, reduced replacement efficiency.

This invention discloses a composite insulator skirt design method that adapts to different icing zones and coordinates with hot water jet de-icing, relating to the field of transmission line insulator technology. Addressing the problems of fixed umbrella shape parameters, poor adaptability to different icing zones, and susceptibility to ice flashover caused by icing bridging in existing composite insulators, this invention employs a modular, graded, and adjustable umbrella skirt assembly in its main composite insulator structure. Differentiated umbrella diameter, tilt angle, and spacing parameters adapt to the icing characteristics of light, medium, and heavy icing zones, while simultaneously coupling and adapting with the parameters of hot water jet de-icing technology. This invention achieves coordinated icing suppression and hot water jet de-icing in different icing zones, delaying icing bridging, increasing ice flashover field strength, and reducing operation and maintenance costs through modular design, ensuring the safe and stable operation of transmission lines in icing areas.

The utility model relates to a battery field discloses a kind of battery, battery module and battery pack. Battery includes shell and electric core component, electric core component is set in shell, and electric core component includes pole group and insulating film of wrapping pole group;Wherein, the inside width of shell along width direction is T;The inside width of insulating film along width direction is M, and the outside width is t;In the state that pole group is not wrapped insulating film, the width of pole group along width direction is m;Satisfy, 89.5%≤t / T≤92.5%, -1mm≤(M-m) / 2≤2mm. The utility model can improve assembly efficiency, and can improve security and volumetric energy density.

The isolation insulation cover comprises an insulation shell and a control assembly, a first insulation cavity for containing an isolation switch is formed in the insulation shell, second insulation cavities connected with a bus are formed in the two ends of the insulation shell, a magnetic flux assembly is arranged on the inner wall face of the first insulation cavity, and the control assembly is arranged on the outer side wall of the insulation shell and provided with a light plate. The light plate can emit light according to the bus phase sequence, an operator can identify the phase sequence conveniently, the operation accuracy and efficiency are improved, meanwhile, the magnetic flux assembly detects the magnetic flux of the first insulation cavity and sends a signal to the control assembly when abnormity occurs, and the control assembly transmits a fault signal to an external terminal and enables the light plate to flicker for early warning. The insulation shell and the insulation cavity structure provide insulation protection for the isolation switch, electric shock and external adverse effects are avoided, and stable operation of equipment is guaranteed.

The problem of the present invention is to provide a resin composition that can suppress viscosity to a low level despite a low amount of inorganic filler, and can obtain a cured product having excellent flexibility and excellent insulation reliability. The solution of the present invention is a resin composition, which is a resin composition comprising (A) an epoxy resin, (B) an inorganic filler, and (C) a polyimide resin, wherein the (A) component comprises (A-1) an epoxy resin containing a siloxane skeleton, and when the non-volatile component in the resin composition is set to 100% by mass, the content of the (B) component is 40% by mass or less.

The application discloses a multi-winding transformer, which comprises a framework and a magnetic core body fixed on the framework, and a first primary winding N1, a first secondary winding N2, a second secondary winding N3, a second primary winding N4 and a shielding layer winding N5 are sequentially and layer by layer wound on the framework; when the second primary winding N4 is wound, the second primary winding N4 is wound on the take-up end of the first primary winding N1, and the start end and the take-up end of the first primary winding N1 and the start end of the second primary winding N4 are all sleeved with an insulating sleeve for providing insulation protection. The primary winding is wound in a layered manner, and the secondary winding is wrapped, so that the magnetic resistance between the primary winding and the secondary winding is reduced through the structure of being tightly wrapped, the coupling interference caused by the distributed capacitance and the leakage inductance is reduced, the coupling coefficient between the primary winding and the secondary winding is improved, and the electromagnetic compatibility of the transformer is improved.

The utility model provides a kind of welding cooling device of stator bar, including clamp and air cooling clamping monomer, two air cooling clamping monomers are placed axially symmetrical and constitute air cooling clamp, two ends of air cooling clamp are clamped by clamp, the inside of air cooling clamping monomer is equipped with several ventilation grooves and two horizontal air ducts, and the side of air cooling clamping monomer is equipped with first air inlet, second air inlet and stator bar clamping groove.The utility model has the beneficial effects that (1) dry cooling eliminates the risk of damp, guarantees insulation performance;(2) multi-channel airflow structure realizes uniform and efficient heat dissipation;(3) double air inlet linkage heat dissipation.

A multilayer body including a first metal layer, an insulation layer disposed on the first metal layer, and a second metal layer disposed on the insulation layer, in which at least one of a bonding surface of the first metal layer in contact with the insulation layer and a bonding surface of the second metal layer in contact with the insulation layer shows a surface roughness curve having a reference length of 250 µm, an average length of elements RSm of 10 µm or more and 100 µm or less, and a maximum height Rz of 1 µm or more and 20 µm or less.

The application discloses a manufacturing method of a high-heat-dissipation-efficiency pouring type driving transformer, and belongs to the technical field of power electronic equipment manufacturing. The method aims to solve the technical problems of low heat dissipation efficiency and insufficient long-term reliability of the existing driving transformer caused by the limited heat conduction performance of the pouring material, the simple surface heat dissipation structure and the difficult coordination of internal thermal stress. The method comprises the following steps: constructing a three-dimensional digital model of a reinforced heat dissipation structure with a boss array and a groove array and preparing a corresponding forming die; positioning a magnetic core and a winding as an insert in a die cavity; pouring insulating colloid with different mechanical and heat conduction properties in batches in a vacuum environment; through a segmented curing process, the flexible colloid is fully filled in the internal gap and buffers the stress, and at the same time, the high-heat-conduction rigid colloid forms an external main body and a heat dissipation structure, thereby forming an integrated pouring body. The method is used for manufacturing the driving transformer suitable for high-power-density and high-heat-dissipation scenes, and can significantly improve the heat dissipation capacity and operation reliability of the driving transformer.

The invention discloses an electrical test bracket for a drop-out fuse, relates to an auxiliary device for an insulation test of a circuit breaker, and aims to solve the problems of non-standard support, poor safety and low test efficiency of the conventional support device. According to the invention, two insulating pillars are vertically arranged on a metal chassis side by side; the number of the insulation clamping supports is two, the insulation clamping supports are correspondingly arranged at the top end of the insulation supporting column, each insulation clamping support is provided with a groove, and the two grooves are used for being matched with the connecting portions of the two ends of the drop-out fuse so that the drop-out fuse can be kept in a horizontal state. When the drop-out fuse is placed in the groove, the distance between the grounding end of the fuse and the ground is not less than 120cm. The beneficial effect is that the safety and the insulation reliability of the test process are significantly improved.

This application discloses a dielectric gradient coating for insulating separators, its preparation method, and its application, belonging to the technical field of electrical equipment insulation materials. The method includes the following steps: (1) adding ethylenediamine and perfluorooctyltrimethoxysilane to a solvent to obtain a modified solution, and then adding nano-graphene to the modified solution to obtain fluoroammonia-modified graphene; (2) mixing the first and second dispersions prepared from the fluoroammonia-modified graphene and magnesium-aluminum hydrotalcite respectively to obtain electrostatic spraying liquids with different concentration gradients; (3) sequentially electrostatically spraying the electrostatic spraying liquids with different concentration gradients onto the surface of the separator to form a dielectric gradient coating, wherein the dielectric constant in the dielectric gradient coating increases from the inside to the outside. In this method, the fluoroammonia-modified graphene is uniformly dispersed in epoxy resin and improves the density of the epoxy resin, thereby increasing the bonding force between the coating and the substrate, and thus improving the service life of the insulating separator under high temperature and high humidity conditions.

The present invention relates to the technical field of connectors, and in particular to an insulator and a connector. The insulator is formed with a through hole running through its main body, and the outer wall of the insulator and the hole wall of the through hole are both provided with connecting parts; along the axial section of the insulator, the insulator is formed into a first insulating part and a second insulating part that are detachably connected; the first insulating part is formed into a first assembly part on one side facing the second insulating part, and the first assembly part is formed with a protruding insulating rib, and the second insulating part is formed into a second assembly part on one side facing the first insulating part, and the second assembly part is formed with an inwardly recessed assembly groove for the insulating rib to extend into when the first insulating part and the second insulating part are assembled. The present invention improves the assembly efficiency of the connector by providing a detachably connected first insulator and a second insulator to facilitate the removal and installation of the contact terminal without the need to use additional removal tools, and the electrical clearance and creepage distance are improved, which is beneficial to improving the insulation performance of the connector.

This utility model discloses an outdoor antifreeze plastic pipe, relating to the field of plastic pipes. It includes a plastic pipe body with an insulated pipe sleeved on the outer side. Two insulated pipes are provided and hinged together. This utility model, employing the above structure, significantly improves the adaptability of the plastic pipe in different installation scenarios. Whether there are slight differences in pipe length or special requirements for the protection range in the construction space, adjustments can be made quickly via the adjustment components, avoiding installation difficulties caused by size mismatches, reducing resource waste and cost investment. There is no need to customize insulated pipes for different length requirements; the same structure can meet various usage needs through adjustment, reducing material idleness and procurement costs, and enhancing the convenience of later maintenance. When the plastic pipe is partially damaged and needs repair, the protective length can be shortened by adjustment without disassembling the entire insulation structure, simplifying the maintenance process.

One embodiment relates to a thermosetting resin composition containing (A) a resin having at least one group selected from the group consisting of an acid anhydride group and a carboxyl group, (B) an ion scavenger containing Zr, Mg, and Al, (C) an inorganic filler, and (D) an epoxy resin.

The invention relates to the technical field of power cables, in particular to a middle-high voltage power cable for long-distance high-capacity power transmission and a preparation method of the middle-high voltage power cable for the long-distance high-capacity power transmission. The conductor shielding layer is coated on the outer wall of the layered split conductor; the insulating layer is coated on the outer wall of the conductor shielding layer; the insulating shielding layer is coated on the outer wall of the insulating layer; the buffer layer coats the outer wall of the insulation shielding layer; and the armor layer coats the outer wall of the buffer layer. The layered split conductor structure breaks through the process limitation of the number of traditional split conductor strand blocks, the composite insulation structure layer is composed of the micro-arc oxidation insulation separation layer and the composite elastic insulation rope, the ultra-thin and tough ceramic coating replaces crepe paper, the filling coefficient and the insulation reliability are improved, and through the filling buffering effect of the elastic rope, the insulation performance of the conductor is improved. And the integrity of the insulating coating under a harsh process is protected.

The application relates to a power distribution cabinet with sockets installed on busbars, and belongs to the technical field of power distribution cabinets. The power distribution cabinet comprises a cabinet body, busbars arranged in the cabinet body, a fixing frame arranged in the cabinet body and an emergency socket. The fixing frame is located below the busbars, the emergency socket is rotationally connected with the fixing frame, a conductive terminal is fixed to one end of the emergency socket away from the interface of the emergency socket, and the conductive terminal is electrically connected with the busbars through a flexible cable. The emergency socket is no longer fixed at a single position by rotationally connecting the emergency socket with the fixing frame and electrically connecting the emergency socket with the fixing frame through the flexible cable, so that the emergency socket has a freedom degree, thereby enabling the emergency socket to be folded to a safe position which does not affect the operation of other devices during a non-use period, and enabling the emergency socket to be turned out to a convenient position which is convenient for plugging and unplugging when electricity is needed. In this way, the space layout inside the power distribution cabinet is optimized, the emergency socket can be prevented from interfering with the cabinet door and other components, and the operation convenience is improved.

The invention relates to the technical field of new energy, in particular to a gluing tool and a battery system.The gluing tool comprises a moving part which moves relative to a pole piece; the gluing assembly is arranged on the moving part and comprises a glue storage part and a gluing part, the glue storage part is used for storing insulation glue, the gluing part is provided with a glue outlet, and the glue outlet is connected with the glue storage part; the adjusting assembly is arranged on the gluing piece and is used for adjusting the widths of the two ends of the glue outlet in the length direction of the glue outlet, so that the gluing thickness on the pole piece is consistent; the length direction of the glue outlet is perpendicular to the moving direction of the moving part. In the whole gluing path, the consistency of the thickness of the glue layer is ensured, and the safety performance of the battery is improved.

The utility model belongs to the battery field, concretely is a kind of battery package installation platform and battery package.The battery package installation platform includes support frame and fixed assembly;Support frame is used to support N battery components in battery package, and fixed assembly includes N pressing plate and 2N connecting piece;Two ends of N pressing plate and the two edge beams of support frame along x direction extension are connected respectively by connecting piece, and z direction binding force is provided to N battery components, to fix battery component on support frame.The utility model places multiple battery components on support frame, and increases pressing plate on the top of each battery component, and limiting battery component in z direction by pressing plate.In the mobile process of battery package, to ensure that battery component can work stably and reliably.

The invention relates to a quick circuit breaker for an ultrahigh-voltage converter transformer, which comprises a circuit breaker mechanism and two fracture structures, the two fracture structures are respectively arranged at two ends in a horizontal tank body, and two particle traps are arranged at the bottom of the tank body, so that dust particles and the like can fall into the tank body; a circuit breaker mechanism adopts a structure that two groups of disc springs are symmetrically arranged to counteract impact force released by the disc springs and is fixed on a lower straight cylinder of the circuit breaker tank body through a transition plate, two sides of the mechanism are reinforced and fixed through a support frame, the circuit breaker is provided with double fractures, and the insulation reliability of the circuit breaker is improved. The two arc extinguish chambers are connected together through the transmission case and symmetrically arranged on the two sides of the tank body, the whole arc extinguish chambers are fixed to a metal supporting cylinder through supporting insulators and connected with a mechanism through a lower straight cylinder, a residual magnetism monitoring device is arranged on the side face of a circuit breaker, and accurate phase selection switching-on is achieved by detecting converter transformer residual magnetism. And the excitation inrush current of the converter transformer is greatly reduced.

This utility model relates to the field of motor stator insulation technology, and discloses a stator assembly with improved insulation structure, including a stator core. The stator core contains multiple stator windings arranged in a circular array. A detachable and easily replaceable insulation component is provided between the stator core and the stator windings. Each stator winding has a fixing component on both sides that allows for quick installation and removal from the insulation component. By setting detachable insulation rings and fixing posts, the insulation structure and stator windings can be replaced individually, reducing maintenance costs. The fixing component, composed of sliding blocks, stops, and limiting plates, enables quick installation and removal of the stator windings, improving maintenance efficiency. The structural design of the "7"-shaped insulation ring, triangular stops, and friction rubber further improves the insulation reliability and fixing stability of the stator assembly, extending the service life of the motor.

The application discloses an isolation transformer and a safety barrier. The isolation transformer integrates multiple transformer units, and the transformer comprises a multilayer printed circuit board, multiple primary winding groups, multiple secondary winding groups, multiple magnetic cores and multiple metal shielding structures. Multiple through holes are formed in the multilayer printed circuit board and penetrate the multilayer printed circuit board; the primary winding groups and the secondary winding groups are annular copper foil windings formed on the multilayer printed circuit board; the magnetic cores are embedded in the through holes and used for forming a closed magnetic circuit to realize magnetic-electric coupling between the primary winding groups and the secondary winding groups in the transformer units; the metal shielding structures are metal shielding frames formed on the periphery of the multilayer printed circuit board and used for shielding electromagnetic interference; one primary winding group, one secondary winding group, one magnetic core and one metal shielding structure constitute one transformer unit. The application is beneficial to integrated multiple transformer units, improves the insulation reliability and electromagnetic compatibility performance of the isolation transformer, and reduces the production cost of the isolation transformer.

The application provides an insulating end plate of a stator, a stator, a motor, a compressor and a vehicle. The insulating end plate of the stator comprises a blocking part, a winding part and a wire passing part. The wire passing part is arranged on one side of the blocking part along the radial direction of the stator. The wire passing part comprises a connecting section, a lead-in section and a lead-out section. The winding part is connected between the connecting section and the blocking part. The lead-in section and the lead-out section are connected to the first axial end surface of the connecting section. The lead-in section and the lead-out section are arranged in a spaced manner along the circumferential direction of the stator to enclose a wire passing groove. The lead-in section and the lead-out section each have a first radial end surface and a second radial end surface along the radial direction of the stator. The first radial end surface of one of the lead-in section and the lead-out section is provided with a first wire groove, and the second radial end surface of the other one is provided with a second wire groove. The first wire groove and the second wire groove are communicated through the wire passing groove. The winding part can be closely arranged on the insulating end plate of the stator, the wire end is reduced, and the automatic winding of the equipment is facilitated.

The utility model discloses a silicone rubber insulation copper-clad aluminum control cable, which relates to the technical field of cables and comprises a cable core, the cable core is composed of a copper-clad aluminum conductor and an insulation layer, the insulation layer is made of silicone rubber, elastic silicone rubber strips are arranged on the surface of the copper-clad aluminum conductor at intervals, an inner protective layer is arranged outside the cable core, and the inner protective layer is made of silicone rubber. The inner protection layer is composed of a fiber belt layer, a silicone rubber binder and a buffer layer, a shielding layer is arranged outside the inner protection layer, the shielding layer is composed of a shielding inner layer and a shielding outer layer, an outer protection layer is arranged outside the shielding layer, and the shielding outer layer is composed of a shielding inner layer and a shielding outer layer. The problems that a traditional control cable is high in cost, poor in insulation performance, insufficient in flexibility and poor in electromagnetic shielding performance are solved.

The utility model discloses a high-voltage coil of a high-voltage winding, the high-voltage coil is of a layered structure, the high-voltage coil comprises a plurality of coil sections, interlayer insulating materials are padded between layers of each coil section, each coil section comprises an equal-width part and a decreasing part arranged on the periphery of the equal-width part, and the width of the decreasing part in the radial direction of the high-voltage winding is gradually reduced from inside to outside. The utility model further discloses the high-voltage winding.

A method for producing a composition, containing: a step a of selecting an inorganic filler and a surface treatment agent capable of treating a surface of the inorganic filler to satisfy the following formula (1): Z<Zt wherein Z represents zeta potential of the inorganic filler, and Zt represents zeta potential of the inorganic filler after surface treatment with 0.01 to 10 parts by mass of the surface treatment agent with respect to 100 parts by mass of the inorganic filler; and a step b of mixing the inorganic filler and the surface treatment agent to obtain a composition.