1622results about "Windings insulation shape/form/construction" patented technology

The invention relates to the technical field, provides a notch liquid cooling structure of a flat wire motor stator, and realizes high-efficiency and low-consumption motor stator cooling through an accurately-positioned full-coverage liquid cooling structure. In order to achieve the purpose, the motor comprises a stator iron core, closed iron core wire grooves are evenly distributed in the inner edge of the stator iron core, wires forming windings are inserted in the iron core wire grooves, the wires are tightly attached to the outer diameter ends of the iron core wire grooves, oil way channels are formed between the wires and the inner diameter ends of the iron core wire grooves, the two ends of the stator iron core are provided with end rings, and the two ends of the stator iron core are provided with end rings. The end ring wraps the wire, and the end ring and the oil path channel form a closed oil path space. Due to the adoption of the technical scheme, the oil path channel formed between the wire and the inner diameter end of the iron core wire slot is matched with the closed oil path space formed by the end ring and the oil path channel, and the position of the oil path channel is used for accurately cooling the wire with the highest heating.

The invention discloses a ventilation cooling optimization method for an all-hydrogen-cooled gas turbine generator, and relates to the technical field of all-hydrogen-cooled generator cooling, and the method comprises the steps: analyzing cooling demands, calculating loss in combination with a high-frequency start-stop peak regulation working condition, and setting a stator RTD temperature, an iron core temperature and a temperature rise target; an end ventilation structure is designed, the diameter of the fan is optimized, and bar gaps, wind shield holes and inner supporting ring ventilation grooves are formed; optimizing variable air ducts of the iron core, and adjusting the width of the air ducts according to thermal load partitions; cFD coupling simulation verification is carried out, and a loss data simulation flow field and a temperature field are imported; carrying out physical test iterative optimization, manufacturing a prototype model, testing, and adjusting parameters until errors are qualified; operation monitoring and dynamic adjustment are carried out, and a sensor is installed to collect data in real time and adapt to working condition requirements. Cooling uniformity and efficiency are improved, peak regulation start and stop working conditions are adapted, hydrogen parameter change influences are balanced, vibration and cooling are cooperatively controlled, operation and maintenance convenience is improved through modular design, and long-term stable operation of the generator is guaranteed.

An electric work machine includes a stator including a stator core, an insulator fixed to the stator core, and a coil mounted on the insulator, a rotor at least a part of which is disposed on an outer circumferential side of the stator, the rotor including a magnet, a stator base including a first heat dissipation fin and supporting the stator core, and an output unit driven by the rotor.

The present invention includes: a stator core (21) having a slot (21a); a bobbin (22) fitted in the slot (21a) and having a through hole (22c) penetrating in an axial direction of the stator core (21); a coil (23) inserted in the through hole (22c); a plurality of protrusions (22e) that protrude from at least one of an inner periphery of the through hole (22c) and an outer periphery of the coil (23), and guide the position of the coil (23) in the through hole (22c); and a resin filled on the periphery of the coil (23) in the through hole (22c).

A motor assembly including a rotor rotatable about a rotating shaft; a stator formed as a continuous body and including multiple teeth areas, multiple body areas disposed outside of the multiple teeth areas and having a first width in a cross section of the stator in a direction perpendicular to a rotational axis of the rotating shaft, with the plurality of teeth areas extending from the plurality of body areas in a direction toward the rotating shaft, and multiple connection areas connecting multiple body areas; and a coil wound around each of the multiple teeth areas, wherein each of the multiple connection areas has a bending point having a second width in the cross section of greater than or equal to 0.05 and less than or equal to 0.25 of the first width, and is in contact with another connection area with reference to the bending point.

The invention discloses a connecting structure of frameless torque motor flat wire windings, which belongs to the technical field of frameless torque motors, and comprises a stator consisting of a stator core and windings, the stator core comprises stator slots and tooth parts, each phase of winding consists of N sets of two groups of flat wire coils, the width of the flat wire coil is gradually increased from the inner diameter side of the stator to the outer diameter side of the stator, the current direction of the coil accords with regular circulation of positive and negative and positive, each set of coil connecting wire is formed by connecting in the same layer, and compared with a coil with the outer side and the inner side connected with a cross-layer wire, the end space can be reduced, and the end height can be reduced. Compared with a round wire winding, the connection structure of the frameless torque motor flat wire winding has the advantages that the slot fullness rate can be increased, the motor efficiency is high, the stability is improved, the space utilization in a stator slot can be greatly improved through a specific wire connection mode, the space waste in the slot is reduced, the windings are more compact, the overall consumables are less, and the connection and assembly are more convenient.

The present invention relates to the technical field of generators, and in particular to a salient-pole generator allowing for enhancement of cooling of pole coils. In the generator of the present invention, an air guide device is provided between poles of every two adjacent pole coils; the air guide device comprises an outer edge circumferential double-sided plate, a central radial plate, and an inner circumferential semi-extension plate which are sequentially arranged and form a whole; the outer edge circumferential double-sided plate is separately connected to the outer edges of rotor cores on two sides; the inner circumferential semi-extension plate is arranged between the inner edge of the leeward side of a pole coil and a stator core and serves as an insulating supporting plate; an air inlet is formed between the central radial plate and an insulating supporting plate at the inner edge of the windward side of the adjacent pole coil; an air outlet is formed in the leeward section of the outer edge circumferential double-sided plate; an insulating plate used for supporting is provided between every two adjacent wire turns of each pole coil; and inter-turn air channels are formed between the insulating plate and the wire turns on two sides. The present invention provides a salient-pole generator allowing for enhancement of cooling of pole coils that is capable of fully using the rotor dynamic pressure energy and greatly increasing the heat dissipation area of the pole coils.

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.

The invention discloses a wire connecting structure of a flat wire stator, and belongs to the technical field of energy-saving motors, the wire connecting structure comprises a stator core and a stator slot, a winding is arranged in the stator slot, the stator core and the winding form a stator, the stator is a concentrated winding type stator, the longitudinal section of the winding is of an octagonal structure, and the winding is arranged in the stator slot. And the left and right sides of the windings can be broken to reduce the number of used molds and reduce the winding difficulty of the windings, and one end of each of two outgoing lines of each group of windings is on the outer diameter side of the stator while the other end is on the inner diameter side of the stator. According to the wire connecting structure of the flat wire stator, the cross section of the winding is of an octagonal structure, folding can be carried out on the two sides, the number of molds can be reduced, the winding difficulty of the winding can be reduced, compared with a traditional winding with a rectangular cross section, the slot fullness rate can be increased by 4%-8%, the end space is small, the number of opened molds is reduced, the winding difficulty of the winding is reduced, the cost is reduced, and the slot fullness rate, the power density and the efficiency are high.

The invention discloses an efficient heat dissipation motor stator module and a manufacturing method thereof, and belongs to the technical field of motors. The problems that an existing motor is low in heat dissipation efficiency, high in winding temperature rise and the like are solved. The module comprises a copper winding, a plurality of high-thermal-conductivity ceramic sheets and an independent stator tooth. Comprising a copper winding and stator teeth, any two adjacent wire turns of the copper winding are separated through high-thermal-conductivity ceramic sheets, the stator teeth penetrate through inner holes of the copper winding, and a high-thermal-conductivity epoxy resin potting layer wraps the copper winding, the multiple high-thermal-conductivity ceramic sheets and the part, penetrating into the copper winding, of the stator teeth and is cured into a whole. The high-efficiency heat dissipation stator module provided by the invention can improve the problem of overlarge thermal resistance caused by an air gap and an insulating layer between a winding and an iron core in a traditional motor, constructs a high-efficiency heat conduction path from the winding to the iron core, and effectively improves the heat dissipation performance of the motor.

The invention belongs to the technical field of superconductive phase modifier stators, and relates to a power grid direct connection type ultrahigh voltage superconductive phase modifier stator cable winding fixing method, which is characterized in that a cable is fixed in a groove in segmented non-magnetic teeth, and the end part of the cable is bound and fixed; and the problem of local deformation of the cable winding caused by end electromagnetic stress and vibration can be avoided.

The present disclosure relates to coils (121), electrical machines (100) comprising coils (121), e.g. a wind turbine generator (42), and methods for cooling coils (121) of electrical machines (100) and for winding and / or electrically insulating (200) coils (121). An electrical machine (100) comprises a rotor (110) and a stator (120). At least one of the rotor (110) and the stator (120) comprises a plurality of teeth (119) and a plurality of coils (121), the coils (121) comprising strand (150) which is wound around the teeth (119) in layers (130, 131). A first axial end portion of a first layer (130) of at least one of the coils (121) is axially displaced (117) with respect to a first axial end portion of a second layer (131) of the coil (121).

A motor stator injection molding and cooling structure of the present invention comprises a shell, a stator core and a flat wire conductor, the stator core is fixed on the inner wall of the shell, the flat wire conductor is inserted in the stator core, the two ends of the shell are provided with end sealing sleeves, and the end sealing sleeves, the inner wall of the shell and the end face of the stator core form an oil storage cavity. The shell is provided with an oil outlet hole at the oil storage cavity; an insulating framework is further arranged between the flat wire conductor and the stator iron core, the stator iron core is divided into at least two sections, a circumferential oil way is formed between the insulating framework at the joint of the adjacent stator iron cores and the shell, a circle of yoke oil way is further formed in the stator iron core, the circumferential oil way is communicated with the oil storage cavity through the yoke oil way, and an oil inlet hole is formed in the position, located at the circumferential oil way, of the shell; the insulating frameworks are further provided with groove bottom oil ways and groove opening oil ways, and radial oil ways communicated with the groove bottom oil ways and the groove opening oil ways are further arranged at the connecting positions of every two adjacent insulating frameworks. The structure is good in cooling effect, convenient to machine and produce and compact in overall structure.

The invention provides a stator iron core, a motor stator and a motor, and belongs to the technical field of electrical equipment, the stator iron core comprises a first iron core part, the first iron core part comprises at least two first punching sheets, and the two first punching sheets are sequentially laminated along the axis direction of the stator iron core; the first punching sheet is provided with a first gap and a second gap, the opening of the first gap is arranged towards the outside of the stator core along the radial direction of the stator core, and the opening of the second gap is arranged towards the inside of the stator core along the radial direction of the stator core; and in two adjacent first punching sheets in the axis direction of the stator core, the projections of the first notch in one first punching sheet and the second notch in the other first punching sheet in the axis direction of the stator core are at least partially intersected. According to the invention, media such as cooling oil can enter the winding groove through the circumferential channel, the first gap and the second gap, and directly contact structures such as a winding coil in the winding groove, so that direct cooling is realized, and the cooling efficiency is improved.

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).

An armature winding of multiple phases has a phase winding that is made of a plurality of partial windings for each phase. The partial winding includes a pair of intermediate conductor portions and crossover portions that connect the pair of intermediate conductor portions in an annular shape, and is configured by a conductor material being wound in multiple layers in the pair of intermediate conductor portions and the crossover portions. The intermediate conductor portions of the phases are arrayed in a predetermined order in the circumferential direction by one of the intermediate conductor portions of the pair of intermediate conductor portions of the partial winding of another phase being arranged between the pair of intermediate conductor portions of the partial winding. A sheet-shaped insulation covering body is provided in the intermediate conductor portion in a portion that opposes the intermediate conductor portion of the partial winding of another phase.

The invention relates to the technical field of motors, and provides a brushless motor which comprises a stator and a rotor spaced from the stator, and the stator drives the rotor to rotate. The stator comprises a framework and a coil fixedly sleeved on the framework; the framework comprises a framework body and a plurality of bosses, every two adjacent bosses and the framework body form a winding groove for accommodating a coil, the number of the winding grooves is multiple, and the rotor comprises an annular fixing piece, a plurality of first magnetic steel and a plurality of second magnetic steel. The circumferential width of the open end, facing the outer ring, of the first winding groove along the framework body is larger than or equal to the circumferential width of the side, facing the outer ring, of the first coil along the framework body. The circumferential width of the opening end, facing the inner ring, of the second winding groove along the framework body is larger than or equal to the circumferential width of the side, facing the inner ring, of the second coil along the framework body. Compared with the prior art, the rotating torque is greatly enhanced.

A drive device has a transmission housing with an external rotor-type electric motor. The electric motor is coupled to the transmission and is actuated by a motor electronic unit. The electric motor has a stator and a rotor which circulates about the stator and is connected to a drive shaft that is guided through a stator bushing with a first sleeve section for holding the stator bushing in the transmission housing in a rotationally fixed manner and with a second sleeve section. A groove frame insulation which surrounds the stator teeth in the axial direction is placed on the second sleeve section. An annular element which is arranged between the first sleeve section and the groove frame insulation and which has a joint element is placed on the second sleeve section of the stator bushing. The joint element engages into a joint contour of the first sleeve section.

The present invention discloses a stator core assembly, a stator, and a motor, wherein the stator core assembly includes a core component and a plurality of independent insulating frames, the core component includes a plurality of cores arranged in sequence, two adjacent cores are connected by a magnetic isolation bridge, and the insulating frames correspond to the cores one by one; wherein the core includes a connected yoke, a tooth portion, and a boot portion, the yoke and the boot portion are arranged at both ends of the tooth portion, the insulating frame is provided with a through-hole, and the tooth portion is installed in the through-hole. The plurality of cores of the core component are connected in sequence by magnetic isolation bridges, and the magnetic isolation bridges are used to reduce the amount of magnetic leakage, which is beneficial to improving the efficiency of electromagnetic energy conversion and improving the performance of the motor; moreover, the teeth of the core are installed in the through-hole of the insulating frame, and each independent insulating frame is fixed to the core component, so the structure is stable and reliable.

The utility model provides a driving device of a food processor, which comprises a stator iron core and a coil winding, the stator iron core and the coil winding are respectively and axially distributed with a crushing device of the food processor, and the crushing device comprises a crushing cutter and a transmission magnetic disk. The driving device drives the transmission magnetic disk to rotate by generating a changing magnetic field so as to drive the crushing cutter to rotate; the stator core comprises a stator body and a stator tooth pole, the coil winding is wound on the stator tooth pole, a first end of the stator tooth pole is connected to the stator body, and a second end of the stator tooth pole is provided with a tooth pole end face; the area of the end face of the tooth pole is larger than the area of the cross section of the stator tooth pole, and when the driving device is powered off, the end face of the tooth pole is attracted to the smashing device through the transmission magnetic disk, so that it is guaranteed that the smashing device cannot fall off or fly-cut from the interior of the cavity in the powered-off state, and use safety of a user is fully guaranteed.

A stator for an electric motor, especially an axial flux motor, includes coils directly connected to one another, thus appreciably simplifying manufacturing and assembly by reducing or, in some instances, eliminating busbars from the stator and reducing the number of connection points to electrically connect the coils to an electrical power source. In one example, multiple coils may be formed from a single continuous conductor. In another example, multiple coils may be assembled from individually formed coils that are welded directly to one another. The stator may further include pole pieces with laminated structures to improve performance. A potting compound may also be applied to the stator in several ways, such as a trickle coating process or a transfer molding process.

The invention provides a 10kV explosion-proof motor stator winding turn-to-turn insulation breakdown risk control method and system, and relates to the technical field of motor manufacturing, and the method comprises the steps: determining the existence of a turn-to-turn insulation defect through analyzing a creepage breakdown phenomenon in batch production, and positioning breakdown points which intensively appear at the head and tail turns of a lead end, obtaining a breakdown point position characteristic; based on the position characteristics of the breakdown points, main causes of insulation weakness are obtained through analysis; based on the main reason of weak insulation, a single-sided polyester film reinforced mica tape is selected as an inter-turn insulation material; and performing process verification on the turn-to-turn insulating material to obtain structural characteristic parameters of the insulating material. According to the method, the reliability and consistency of turn-to-turn insulation of the 10kV explosion-proof motor stator winding are improved through full-process control of data-driven defect diagnosis, material selection, process optimization, insulation strengthening and performance verification.

The invention relates to an electric machine stator, comprising a stator core (4) comprising laminations (3), having stator teeth (5) and stator slots (6) located between the stator teeth (5) and extending about a stator axis (7), and comprising stator windings (8) extending in the stator slots (6), the stator teeth (5) being connected to one another by an annular stator yoke (9) and each having a tooth end (10) facing away from the stator yoke (9), the stator slots (6) have slots (11) formed between the tooth ends (10), the slots (11) of the stator core (4) are closed by slot closing units (12), a cooling medium, in particular oil, can flow through the stator slots (6) along a cooling path (15), characterized in that the stator core (4) is provided with a plurality of slot closing sub-units (12p), which are arranged in each case on the stator sub-cores (14) and together form the slot closing units (12); a sealing interface (13) is formed between adjacent groove sealing subunits (12p), and each sealing interface (13) comprises a corresponding annular sealing face (13s) of the adjacent groove sealing subunits (12p).

An electric machine (10) can include a stator core (18) having a plurality of core teeth that define a plurality of core slots (20) in a surface thereof. A winding (16) can be housed at least partially in the core slots (20). The winding (16) can include a tube (74) defining a channel (42) through at least a portion thereof and one or more wires (76) disposed along a surface of the tube (74) that is opposite the channel (42). A cooling system (40) can be operably coupled with the channel (42) and configured to move a cooling fluid (44) through the channel (42).

The invention provides a framework assembly and a motor with the same, and the framework assembly comprises a bearing structure which is provided with a winding part and a wire passing concave part, the winding part is used for the winding of a wire harness, and the wire passing concave part is used for the passing of the wound wire harness; the abutting structure is movably arranged on the bearing structure, and the abutting structure is provided with an initial position and an abutting position; when the abutting structure is located at the initial position, a preset distance is formed between the abutting structure and the wire harness; when the abutting structure is located at the abutting position, the abutting structure abuts against the wire harness penetrating through the wire passing concave part so as to tighten the wire harness. According to the invention, the problem of poor quality of the motor stator in the prior art is effectively solved.

To provide a motor capable of reducing an axial size.SOLUTION: This motor comprises: a rotor 10 having a shaft 11 disposed so as to be rotatable about a center axis and a bearing 12 which rotatably supports the shaft; a stator disposed so as to face the rotor in a radial direction; a coil wound on the stator; a bearing holder 40 that holds the bearing; a busbar holder 50 positioned on one or the other side of the bearing holder in the axial direction; and a cylindrical housing 60 that has an opening on one side in the axial direction. The rotor, the stator, the bearing holder, and the busbar holder are stored in the housing, and the busbar holder is fixed to the bearing holder to abut in the axial direction. A power supply busbar and a signal busbar are formed integrally with the busbar holder. A circuit board 70 and a sensor 80 are stored between the busbar holder and the bearing holder.SELECTED DRAWING: Figure 4

To avoid an increase in manufacturing cost of an electric motor, and increase the space factor of a winding portion while improving the reliability of a conductor wound in a first layer of the winding portion.SOLUTION: An electric motor manufacturing method performs: a first operation of winding a conductor from one end side to another end side of a winding drum in a radial direction of a yoke while leaving a gap between adjacent windings in a first layer; and a second operation of after the first operation, winding the conductor in the first layer so as to be in contact with the winding located at the other end, thereby moving at least a portion of the winding wound in the first operation toward the one end to close the gap.SELECTED DRAWING: Figure 15

The utility model relates to the technical field of new energy high-altitude operation parts, and discloses a series excitation three-phase asynchronous drive motor stator assembly, which comprises a flat wire coil formed by winding a bare flat wire, interlayer insulation paper is arranged between layers of the bare flat wire, the bare flat wire comprises a flat wire end, and the flat wire end is provided with an insulation layer. And wrapping cloth is arranged on the surfaces of the four groups of flat wire coils. According to the series excitation three-phase asynchronous drive motor stator assembly, through the flat wire coil formed by the bare flat wire in the winding mode shown in the attached drawing, when a winding machine carries out winding processing on the stator assembly, winding equipment can complete winding at a time, secondary processing is not needed, time and labor are saved, the production efficiency is improved, and the production cost is reduced. Meanwhile, wrapping equipment can conduct wrapping processing on the flat wire coil conveniently, stranded wires are welded conveniently, and finally, the first soft red copper stranded wires and the second soft red copper stranded wires are connected with the designated flat wire ends respectively in a flexible connection welding mode, so that assembly in the subsequent procedure is facilitated, and the production efficiency is improved.

The invention provides a stator unit, a motor provided with the stator unit, and an air conditioning device, a refrigerator and a vehicle-mounted device equipped with the motor. The stator unit can ensure the cooling efficiency of a coil. At least one refrigerant passage between the plurality of coils (U1 to W3) is closed by a harness block (70). However, since at least a part of a pipe (59) covering the neutral point (58) is disposed between the bottom surface of the harness block (70) and the coils (V1, W2), the refrigerant passage can be prevented from being further closed by the pipe (59). As a result, the cooling medium can easily pass through the plurality of refrigerant channels, and therefore, the cooling efficiency of the coils (U1 to W3) can be ensured.

The invention relates to an electric machine (1) having a rotor (3), a stator (2), a plurality of winding elements (5) in the form of hollow conductors, which form individual coils of a winding (4) of the electric machine (1) and are each part of a cooling circuit of the electric machine (1), and having a plurality of external phase terminals (L1-L3) electrically connected to the winding elements (5). According to the invention, a hydraulic connection portion (15) to which the winding elements (5) are hydraulically connected and a seal (27) having a plurality of through-openings (28) in which the ends (8) of the winding elements (5) are each arranged are provided, wherein the hydraulic connection portion (15) and the seal (27) have opposite surfaces (29, 30) which overlap one another in order to seal the individual connections of the winding elements (5) at the hydraulic connection portion (15).