882results about "Windings insulation material" patented technology

The invention relates to the technical field of electromagnetic coils, in particular to a laminated planar spiral coil winding. The laminated planar spiral coil winding is formed by laminating at least two layers of planar spiral coils, the spiral center fitting line formed by each turn of wire is linear, the planar spiral coils occupy the whole winding plane, the strong magnetic center deviates from the geometric center of the planar spiral coils, and the phases of the winding are different in layer. The invention aims to provide competitive choices for the axial flux motor winding, such as high copper full rate, low copper loss, large air gap, easy heat dissipation and low production cost.

A rotary machine coil includes: a coil conductor; and an insulation layer including a mica tape which is wrapped around an outer periphery of the coil conductor and in which a mica layer and a film layer are laminated in this order from the coil conductor side, and a cured material of a thermosetting resin composition with which the mica layer is impregnated. The permittivity in an insulation layer (first mica layer) on the inner-layer side is higher than the permittivity in an insulation layer (second mica layer) on the outer-layer side, thus reducing the electric field intensity applied in the insulation layer.

An electrical machine may include a rotor rotatable about an axis of rotation, by way of which an axial direction of the electrical machine may be defined, a stator having electrically conductive stator windings, and at least one cooling channel through which a coolant may be flowable for cooling the stator windings. The stator may have stator teeth extending along the axial direction, arranged spaced apart from another along a circumferential direction of the rotor, and bearing the stator windings. The at least one cooling channel and at least one stator winding may be arranged in at least one intermediate space formed between two stator teeth adjacent in the circumferential direction. A plastic for transferring heat from the at least one stator winding to the at least one cooling channel may be arranged in the at least one intermediate space.

The invention discloses an insulated wire and a preparation method thereof, a coil and electronic / electrical equipment, the insulated wire comprises a conductor and an insulating layer arranged at the periphery of the conductor, the material of the insulating layer is obtained by mixing and granulating two resins, namely resin A and resin B, and the material obtained after mixing comprises units shown in the following formulas 1-3: # imgabs 0 # formula 1, # imgabs 1 # formula 2 and # imgabs 2 # formula 3; the molar ratio of the unit as shown in the formula 1 is 3-17%, the molar ratio of the unit as shown in the formula 2 is 37-77%, and the molar ratio of the unit as shown in the formula 3 is 20-47%. According to the invention, the adhesiveness of the pure PEEK resin and a copper conductor can be improved, and the flexibility of the insulating material is improved; and the PEK-C and the PEEK both belong to polyarylether ketones and have the same ether bond and ketone group, so that the compatibility of the PEK-C and the PEEK is good, and the overall strength and stability of the blended material can be improved.

A conductive composite stator unit for an electric motor of a vehicle is provided. The stator unit comprises a stator core comprising a body having a first core end and an opposing second core end. The stator unit further comprises a plurality of conductive bars extending from the first core end to the second core end. Each conductive bar comprises a straight portion disposed in one of the slots such that the respective conductive bar is in contact with the stator core. Each conductive bar comprising a central portion and an outer layer disposed thereabout for electrical current to flow therethrough relative to the longitudinal axis, the outer layer comprises at least two copper-graphene (Cu-Gr) layers. Each Cu-Gr layer comprises a copper layer and a graphene layer. The stator unit further comprises an insulator layer disposed about each of the plurality of conductive bars.

The invention relates to an enameled round wire, to a method for producing an enameled round wire and to the use of an enameled round wire. So far, lubricating wire paints, in particular wire paints having polymers containing siloxane groups, cannot be impregnated because the uppermost "last" lubricating layer in the multilayer wire paint structure is non-polar due to the siloxane groups. The invention suggests that the multilayer structure can be used in order to break at least the uppermost layer of lubricating paint by means of an intermediate step of energizing and / or Joule heating, which is often present, to raise the temperature to 200 DEG C or higher for a short period of time, thus, the subsequent impregnation with the liquid impregnating resin can be bonded to the thermally labile layer below the uppermost lubricating layer.

Stators in downhole ESP motors often are used in the sorts of high temperature operations in which rigid, inorganic insulation may prove useful. However, such rigid insulation materials may have inherent manufacturability issues which can limit usage, for example in elongated motors of the sort often used with downhole electrical submersible pumps. Disclosed embodiments provide solutions for effectively insulating conductor portions in the slots of a stator lamination in an ESP motor, and for effectively manufacturing, managing inventory for, and assembling improved stators.

The present invention provides a core assembly, a motor, a compressor, and a vehicle. The core assembly includes: a core body, the core body includes a plurality of segmented cores, and a mounting groove is provided at the edge of at least one end face of each segmented core; a plurality of insulating frames, each segmented core is arranged between two insulating frames, and the two insulating frames are distributed at both ends of a segmented core, and at least one insulating frame is provided with an insulating protrusion for covering both sides of the segmented core on one end face facing the segmented core, and the insulating protrusion cooperates with the mounting groove. By covering both sides of the segmented core with the insulating protrusion, the thickness of the portion of the insulating frame covering the end face of the segmented core and extending along the end face can be effectively reduced while ensuring sufficient creepage distance between the winding of the motor and the core assembly, thereby reducing the length of the core assembly in the axial direction of the core body, thereby facilitating reduction in motor volume and weight, and high insulation reliability.

A stator for an axial flux machine includes a plurality of units (100; 200; 400) disposed generally circumferentially around an axis. Each of the units (100; 200; 400) is operable to generate a magnetic field generally parallel to the axis. Each of the units (100; 200; 400) respectively includes: an axially extending stator core tooth (102T; 202T; 402T) defining at least part of a stator core, and a set of windings (102C; 202C; 402C) wound around the stator core tooth. The stator includes a heat dissipation arrangement for facilitating dissipation of heat from the stator core during operation of the stator. By facilitating dissipation of heat generated or accumulated in the stator core during operation of the stator, the performance, efficiency and / or lifespan of the stator can be improved.

The invention discloses an insulated wire and a preparation method thereof, a coil and electronic / electrical equipment, and relates to the technical field of insulated wires, the insulated wire comprises a conductor, an insulating layer and a self-adhesive layer, the insulating layer and the self-adhesive layer are sequentially arranged on the periphery of the conductor, and the self-adhesive layer is modified polyamide-imide resin. The modified polyamide-imide resin contains a long-chain aliphatic structural monomer. The insulated wire provided by the invention has excellent binding power at a high temperature, and can be suitable for a high-temperature scene of 200 DEG C or above. And the impregnating varnish raw material cost, the impregnating varnish coating process cost and the labor cost of a client can be reduced on the whole.

The present invention relates to a method for manufacturing an electric motor having a stator with stator slots and electrical conductors arranged therein. In order to achieve simple production, the following is planned, that at least two electrical conductors are sheathed in an extrusion process with an electrical insulator, which holds the at least two electrical conductors at a distance from one another and has at least one positioning contour, that the at least two electrical conductors together with the electrical insulator are inserted into an associated stator slot and fixed therein via the at least one positioning contour.

An insulated wire including a conductor and a resin coating layer covering a periphery of the conductor, wherein the conductor is an aluminum conductor surface-treated with CO2 plasma, and at least a portion of the resin coating layer in contact with the conductor includes at least one kind of a polyaryletherketone resin and a polyphenylene sulfide resin.

A pole cover is provided for receiving and guiding a winding on a rotor of an electric motor, comprising multiple segments which extend in a radial direction to a center axis of the pole cover, wherein the segments receive a partial region of the winding of the electric motor, and wherein each of the segments includes a winding region to receive the winding and a segment connection region for connecting to other segments, wherein the winding region and the segment connection region border on each other and the segment connection region is situated closer to the center axis than the winding region. The segment connection regions extend at least partially in the circumferential direction about the center axis and each segment connection region protrudes, in the circumferential direction about the center axis, beyond the adjoining winding region. Multiple decoupling regions are also provided, each being situated between two segment connection regions in the circumferential direction about the center axis. An electric motor having such a pole cover and a method for producing a pole cover are also provided.

An electric motor includes a motor carrier and a stator secured to the motor carrier, as well as a rotor surrounding the stator. A coil or winding insulation is provided at least on the side of the stator facing away from the motor carrier. Contact pins are disposed in a receiving or mounting space of the stator, for contacting the stator winding thereof via connection contacts, and are guided into a carrier-side electronics compartment. The coil or winding insulation has an annular body on which functional elements are formed for holding, positioning and / or centering the contact pins and / or the connection contacts.

The invention provides polyester as well as a preparation method and application thereof, the polyester comprises a structural unit derived from an imide monomer and a connecting structural unit derived from a connecting structural unit monomer, and the polyester is obtained by mixing and reacting a reaction raw material of the imide monomer and the connecting structural unit monomer; reaction raw materials of the imide monomer comprise acid anhydride and an amino compound, and the imide monomer comprises terminal hydroxyl or carboxyl. The polyester provided by the invention does not need to add extra solvents during preparation, is environment-friendly and low in preparation cost, and is beneficial to reducing the viscosity of the polyester and improving the heat resistance of the impregnating varnish.

A stator includes: a stator core having an annular shape, a coil, and a cover member having a cylindrical shape. The stator core includes a plurality of teeth portions that are aligned in a circumferential direction and a plurality of slots that are formed between the teeth portions which are adjacent to each other in the circumferential direction. In the coil, a plurality of conductor wire portions are wound around each of the teeth portions through the slots. The cover member is arranged to be inserted into an inner circumferential portion of the stator core such that an outer circumferential surface faces an opening on an inside in a radial direction of the plurality of slots. A foamable insulation member that covers an outer surface of the plurality of the conductor wire portions of the coil and is bonded to the outer circumferential surface of the cover member through the opening of the slots is loaded in each of the slots.

An electric machine has a housing which has an interior space and an interior wall extending about the interior space, and a stator assembly disposed within the interior space and attached to the interior wall. The electric machine includes a rotor within the interior space and located radially inward from the stator. The rotor and stator define a gap there between and cooperate to produce flux. The rotor comprises a hollow cylindrical member having an interior region, an interior wall extending about the interior region and an exterior surface. The rotor includes magnets attached to the exterior surface and a rotor shaft support structure disposed within the interior region of the hollow cylindrical member and attached to the interior wall of the hollow cylindrical member. A rotor shaft is attached to the rotor shaft support structure. The electric machine further comprises bearings to locate and support the rotor shaft relative to the housing.

The invention discloses a large-bore high-density joint motor for a humanoid robot, which comprises a stator and a rotor, and is characterized in that the rotor comprises a hollow shaft and magnetic steel surface-mounted on the outer wall of the hollow shaft; the stator comprises a stator core outside the magnetic steel, insulating end plates are arranged at the two ends of the stator core, windings are arranged at the outer ends of the insulating end plates, a leading-out wire is arranged at the outer end of one winding, a thermal resistor is arranged on the winding, and a temperature sensor of the thermal resistor is embedded in the winding; by arranging the thermal resistor on the winding, the temperature can be monitored at any time, so that the load of the motor can be adjusted according to the monitored temperature, the influence on normal operation caused by overhigh temperature rise of the motor is prevented, the diameter of the rotor is increased and the crack ratio is increased by arranging the inner cavity of the hollow shaft into a large inner hole structure and matching the pole slots of the stator and the rotor to adopt 18 slots and 20 poles, and the reliability of the motor is improved. The magnetic conduction thickness of the hollow shaft can be reduced by selecting multiple poles, and the purpose of reducing the weight of the hollow shaft is achieved.

The invention relates to the technical field of winding wires, and provides a high-temperature-resistant submersible motor winding wire and a preparation method thereof. The high-temperature-resistant submersible motor winding wire comprises a wire core and a fluoroplastic insulating layer coated outside the wire core, the wire core sequentially comprises a conductor formed by twisting copper wires and a polyimide film layer from inside to outside; a sheath layer is arranged outside the fluoroplastic insulating layer; the sheath layer comprises the following raw materials in parts by weight: 35-45 parts of polyether-ether-ketone, 20-30 parts of polytetrafluoroethylene, 5-15 parts of acrylate rubber, 5-10 parts of a nano inorganic filler, 0.5-1 part of an antioxidant and 3-9 parts of inorganic fibers; the melt index of the polyether-ether-ketone is 10-30 g / 10 min at the temperature of 380 DEG C and the weight of 10 kg. According to the technical scheme, the problem of poor high temperature resistance of the submersible motor winding wire in the prior art is solved.

Method for applying and foaming an electrically insulating foam structure onto a wire arrangement (100) for an active part of an electric machine, wherein the method comprises applying a thermoplastic coating polymer (110) to the wire arrangement (100), inserting the wire arrangement (100) into the active part, saturating the thermoplastic coating polymer (110) with carbon dioxide under defined temperature and pressure conditions, cooling the active part, lowering an ambient pressure of the active part, and increasing the temperature to form a foam structure such that the foam structure (100X) has electrically insulating properties.

The invention discloses a high-overload permanent magnet servo motor cooling structure with a phase change material and a method. The high-overload permanent magnet servo motor cooling structure comprises a casing, an end cover, a stator core, a permanent magnet, a rotor core, a rotating shaft, a rotor end cover and a stator winding, wherein phase change-epoxy resin composite encapsulating materials are arranged on two end surfaces of the stator core. The method comprises the steps of selecting an initial phase change material, then dividing a second layer of phase change material and a third layer of epoxy resin material to obtain composite material layers, then constructing a thermal network model, obtaining end temperature rise of the stator winding, changing selection of the phase change material, and repeating experiments to obtain an optimal phase change material. According to the structure, the influence that the size of the motor is increased due to filling of the phase-change material is avoided, temperature rise of the end of the stator winding under the high-overload working condition is effectively restrained, and the optimal phase-change material suitable for the structure is selected through multiple experiments.

The invention discloses a 12000-turn range extender generator for an electric aircraft, which adopts a mode of 24-slot and 20-pole inner rotor and radial insertion of seven-section rotor iron core skewed slot magnetic steel, and has the excellent performances of symmetrical magnetomotive force waveform, high winding coefficient, low torque ripple and cogging torque and no end ring current. The motor adopts a centralized winding, winding oil cooling and shell water cooling mode, and is suitable for a generator for a range extender of an electric aircraft.

The invention comprises a stator (1) for an electric motor, having a basic shape, wherein the basic shape consists of a one-piece insulating material (14) and the stator (1) has a first end region (5), a second end region (6), and a core region (7) arranged between the first end region (5) and the second end region (6), wherein electrical lines (4) for coil windings are embedded in the insulating material (14), wherein the electrical lines (4) run essentially in the transverse direction (11) in the insulating material (14) of the first end region (5) and the second end region (6) and in the longitudinal direction (12) in the insulating material (14) of the core region (7), wherein the core region (7) has at least one sequence of alternatingly arranged first core layers (8) and second core layers (9) in the longitudinal direction (12),wherein the insulating material (14) is formed in the first core layer (8) as a column structure (10) and in the second core layer (9) as a surface structure (21), and wherein ferromagnetic material (13) for forming stator teeth (3) is arranged between the column structures (10) made of insulating material (14) in the first core layers (8). The invention further comprises a method (100) for producing a stator (1).

The invention relates to an equivalent modeling establishment method for a winding in a slot of an outer rotor permanent magnet synchronous motor. The method comprises the following steps: S1, obtaining winding parameters of the outer rotor permanent magnet synchronous motor; s2, performing equivalent treatment on copper, air, insulation and enameled wires existing in a single winding; s3, calculating a single equivalent heat conductivity coefficient; s4, stacking according to the single winding in the S2, and calculating the equivalent heat conductivity coefficient of the whole slot winding; and S5, carrying out equivalence on the equivalent heat conductivity coefficient of the whole slot winding obtained in the step S4 and slot insulation again to obtain an equivalent slot heat conductivity coefficient of the whole model, and completing equivalent modeling of the winding in the slot of the permanent magnet synchronous motor. The method has the advantages that materials, including copper, insulation, air, enameled wires and the like, of the winding in the groove are equivalent to the variable-heat-conductivity-coefficient conductor, the heat conductivity coefficient and the heat flux density of the equivalent model are calculated, and meanwhile, the three-dimensional temperature field global simulation model is established, so that the transient temperature field distribution of the outer rotor permanent magnet synchronous motor is more accurate.

The invention discloses a high-heat-resistance polyimide enameled wire and a preparation method thereof. The high-heat-resistance polyimide enameled wire comprises a copper or aluminum wire and a polyimide insulating paint layer arranged on the wire, and the insulating paint layer is formed by immersing the wire into a polyamide acid solution containing cetyltrimethylammonium bromide modified ZrO2 powder for coating, and carrying out multi-stage heating treatment and heating curing. The CTAB modified zirconium oxide is used, and the CTAB modified ZrO2 powder is added for the first time to prepare the insulating paint layer of the polyimide enameled wire, so that the tensile strength and the heat resistance of the insulating paint layer in the enameled wire are effectively improved, the thermal decomposition temperature of the polyimide insulating paint layer can be increased to 520 DEG C, and the tensile strength can be increased to 88 MPa; and meanwhile, the insulating and flame-retardant properties of the enameled wire are improved, and the application scene of the polyimide enameled wire is expanded.

The invention discloses an insulated wire and a preparation method thereof, a coil and electronic / electrical equipment, and relates to the technical field of insulated wires, the insulated wire comprises a conductor, and a bottom layer and an outer insulating layer which are sequentially arranged at the periphery of the conductor, and the bottom layer and the outer insulating layer are jointly used as an insulating layer of the insulated wire; wherein the bottom layer is made of phenolphthalein polyaryletherketone; and the material of the outer insulating layer is obtained by blending and granulating polyether-ether-ketone, soluble polytetrafluoroethylene and phenolphthalein polyaryletherketone. According to the insulated wire provided by the invention, the PEK-C layer is added between the outer insulating layer and the metal conductor as a bottom layer, so that the adhesiveness between PEEK and copper can be improved, and the risks of pipe separation and breakage are reduced; and meanwhile, the PFA is mixed in the PEEK of the outer insulating layer, so that the flexibility of the outer insulating layer can be improved, and the dielectric property at high temperature can also be enhanced.

A stator assembly made of conductive composite material for a vehicle electric motor is provided. The stator assembly comprises a stator core, which includes a body with a first core end and an opposing second core end. The stator assembly further comprises a plurality of conductive bars extending from the first core end to the second core end. Each conductive bar includes a straight section arranged in one of the slots, such that the respective conductive bar is in contact with the stator core. Each conductive bar includes a central section and an outer layer arranged therein for the flow of electric current through it relative to the longitudinal axis, the outer layer comprising at least two copper-graphene layers (Cu-Gr layers). Each Cu-Gr layer comprises one copper layer and one graphene layer.The stator unit also includes an insulating layer arranged around each of the multiple conductive bars.

An electric machine (1, 1') comprises: a stator (10, 10'), a rotor (11, 11') rotatable relative to the stator (10, 10'), a machine control (16) configured to set the power output of the electric machine (1, 1') and in which a threshold value (T) is stored that determines a maximum adjustable power output during normal operation of the electric machine (1, 1'), a cooling system (12) for cooling the stator (10, 10') and / or the rotor (11, 11'), wherein the cooling system (12) is configured to continuously dissipate at least a maximum normal operating heat output that can be dissipated during normal operation of the electric machine (1, 1'), and an additional cooling system (13) with a reservoir (130) for receiving a consumable fluid (131) for cooling the stator (10, 10') and / or the rotor (11, 11') can be transferred to the stator (10, 10') and / or the rotor (11, 11').

To provide a rotary electric machine insulation material and a rotary electric machine which can be used in a bending process, and further, the insulation properties of which can be stabilized.SOLUTION: In a rotary electric machine insulation material, a resin film is used to insulate a motor 2 of a rotary electric machine 1. As the resin film, a thermoplastic polyimide resin film 10 is used. The maximum strength of the thermoplastic polyimide resin film 10 at 23°C is 50 MPa or greater if measured in accordance with JIS K7127, the breaking elongation of the thermoplastic polyimide resin film 10 at 23°C is 50% or greater if measured in accordance with JIS K7127, the elastic modulus of the thermoplastic polyimide resin film 10 at 23°C is 2000 to 5000 MPa if measured in accordance with JIS K7127, and the water absorptivity of the thermoplastic polyimide resin film 10 at 23°C is 1.0% or less if measured in accordance with JIS K7209 A.SELECTED DRAWING: Figure 1

Provided is an insulated wire provided with a conductor and a coating layer formed around the conductor, the coating layer being provided with: a fluororesin layer containing a melt-processable fluororesin; and a PAEK resin layer formed around the fluororesin layer and containing a polyaryletherketone (PAEK) resin, the coating layer having a thickness of 40 [mu] m to 300 [mu] m.