1395results about "Magnetic circuit" patented technology

An electric motor having a stator and a rotor in which the electric motor is an axial flux motor. The stator has a multiplicity of cores which, along a circumferential direction, are disposed beside on another on a common first diameter and are in each case surrounded by one coil. The rotor has a multiplicity of magnets which, along the circumferential direction, are disposed beside one another on a common second diameter on a support. Each magnet in the circumferential direction extends across a first angular range and the magnets are disposed so as to be mutually spaced apart by a second angular range formed by the support, which support is also heatable by the stator by induction. The second angular range is at least 30% of the first angular range.

A linear motor includes an armature and a field magnet that are disposed to face each other and configured to be subjected to relative movement. The armature includes a plurality of windings that are arranged along a direction of the relative movement. Each of the windings is wound around a first iron core. The field magnet includes a plurality of permanent magnets that are disposed to face both sides of the armature in a direction perpendicular to the direction of the relative movement, and are arranged along the direction of the relative movement. A ratio of a dimension of the first iron core to an arrangement pitch of the windings in the direction of the relative movement is in a range from 0.1 to 0.35.

The invention discloses an axial magnetic flux motor based on half-cycle oil injection cooling and an oil injection cooling method thereof.The axial magnetic flux motor comprises motor shells, the two motor shells are symmetrically installed, the two stator assemblies are arranged in the two motor shells respectively, the rotor assembly is arranged between the two stator assemblies through an output shaft, and the rotor assembly is arranged between the two stator assemblies through an output shaft. The two stator assemblies are arranged on the two motor shells, the half-cycle oil injection cooling assemblies are arranged on the two motor shells and correspond to the upper half parts of the two stator assemblies, and the confluence oil outlet assemblies are arranged on the two motor shells and correspond to the bottoms of the two stator assemblies. The heat exchange efficiency is far higher than that of indirect cooling, and meanwhile, the two rows of half-cycle arc-shaped oil nozzles ensure that the cooling oil covers all winding coils, shunt cooling and auxiliary casing flow channel structures, the heat dissipation uniformity is improved, and the problem that the heat dissipation effect of the motor is poor is solved.

The invention provides a rotor punching sheet, a rotor iron core, a rotor, a motor and an air conditioner, the rotor punching sheet is provided with more than two magnetic pole forming areas corresponding to rotor magnetic poles, and each magnetic pole forming area is internally provided with a magnetic steel groove which is arranged on a q axis and extends along the radial direction; the rotor punching sheet is provided with a first magnetic barrier groove located on the d axis between every two adjacent magnetic steel grooves. Wherein first magnetic bridges are formed between the first magnetic barrier grooves and the adjacent magnetic steel grooves on the two sides, and the width of each first magnetic bridge is gradually increased in the radial outward direction of the rotor punching sheet. According to the technical scheme of the invention, the magnetic lines of force can be gradually drawn close to the d axis from the two sides of the d axis, and the sinusoidal property of the magnetic flux in the air gap is better, so that the torque pulsation of the tangential motor can be reduced.

A stator ring-internal gear assembly for a transmission device comprising a planetary gear of a wheel hub drive for a vehicle, the assembly may include a stator ring of an electrically operable electric motor device of the wheel hub drive for providing a motor torque and an internal gear of the transmission device for translating the provided motor torque into a net torque. The stator ring and the internal gear may be directly fixed to one another by positive connection in a non-rotatable and tension-resistant manner. The stator ring and the internal gear may form a mono-lithic unit.

The invention discloses a rotor disc structure of an axial magnetic flux motor, which comprises a rotor piece arranged on a rotating shaft of a disc type motor, the rotor piece comprises a rotor disc and a carbon fiber layer, the rotating shaft is fixedly sleeved with an inner ring of the rotor disc, and the carbon fiber layer is arranged on an outer ring of the rotor disc to improve the mechanical strength of the rotor disc; the rotor permanent magnet piece is arranged on the rotor disc and provides a permanent magnet; and the compensation insulating part is arranged on the rotor disc, so that the eddy-current loss of the rotor disc in the high-speed rotation process is reduced, and groove gap compensation is provided for the rotor disc. The motor is reasonable in structural design, high in mechanical strength, small in heat productivity and capable of remarkably reducing eddy-current loss and remarkably improving the rated rotating speed. When the rotor disc rotates at a high speed to cut a magnetic induction line of the stator disc, an annular flowing current is generated in the circumferential direction of the mounting through hole, the current at the position can generate heat to cause eddy current loss, the compensation insulation block made of an insulation material enables the current at the position to be disconnected, and thus heat generation and eddy current loss of the rotor disc are reduced.

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.

A wheel assembly structure of a vehicle may include a wheel on which a tire of a vehicle is mounted, a rotor housing connected to the wheel to rotate with the wheel, a stator housing fixed to the vehicle, and configured to rotate the rotor housing by application of current, a wheel hub extending at a central portion of the wheel toward the vehicle inner side, a knuckle having a first end rotatably connected to the wheel hub, and a second end extending toward an inner side of the vehicle, a shock absorber connected to a second end of the knuckle, and configured to alleviate shock between the stator housing and the wheel, and an assembly bracket connected to the stator housing, coupled to an upper end and a lower end of the shock absorber, protruding toward the inner side of the vehicle.

The invention belongs to the related technical field of high-speed permanent magnet disc type motors, and provides a preparation method of a high-speed permanent magnet disc type motor and a gradient hierarchical composite rotor in order to solve the limitation of an existing axial disc type motor under the working condition of ultrahigh rotating speed, the high-speed permanent magnet disc type motor comprises a stator iron core, a winding and the gradient hierarchical composite rotor; the gradient hierarchical composite rotors are symmetrically distributed on the two sides of the stator core. The gradient hierarchical composite rotor comprises a gradient hierarchical composite magnetic circular ring, a circular ring pressing plate and a rotor yoke magnetic conductive ring; the gradient hierarchy composite magnetic ring is formed by winding gradient hierarchy composite magnetic strips, the gradient hierarchy composite magnetic strips are composed of magnetic powder resin mixed colloid and carbon fiber strips, and the thickness of the magnetic powder resin mixed colloid is decreased in a gradient mode in the radial direction. According to the scheme, the mechanical strength of the high-speed disc type permanent magnet motor rotor is enhanced, the eddy current loss of the rotor is reduced, and the rotor forming flexibility is improved.

The embodiment of the invention discloses a hollow, double-braided and integrated robot joint module with high torque density, and relates to the technical field of frameless torque motors and robot integrated joints. The joint module comprises a planetary reducer, a hollow shaft, a composite Halbach structure frameless torque motor and the like. According to the composite Halbach structure frameless torque motor, through the distribution design of the main magnet and the auxiliary magnet in the steel ring magnetic group and the ferromagnetic design arranged on the main magnet and / or the auxiliary magnet, the effect of increasing the rotating speed and the torque of the shutdown module is achieved. The air cooling design of a variable-torsion-angle structure is adopted for the joint module, so that the temperature rise of the joint module during working can be effectively reduced; the hollow design of the joint module facilitates wiring planning and management in subsequent integration of the joint; the joint module adopts a magnetic double-braided design, has the function of synchronously detecting the rotation angles and the rotation speeds of an input end motor and an output end planetary reducer, and improves the joint transmission precision through position synchronization and speed synchronization.

The invention provides a servo motor and a semiconductor device. The servo motor includes a motor and an encoder. A shell of the motor is provided with a first vent hole. A stator of the motor is arranged in the shell. A rotating shaft of the motor is arranged in the shell and rotates under the electromagnetic action of the stator. The rotating shaft is partially hollow and is provided with a second vent hole for air to circulate in the first vent hole and the second vent hole. The encoder is arranged in the shell, detects rotation information of the motor and encodes the rotation information into a signal. And the accuracy and the service life of the encoder are maintained by the independent sealed space. In addition, the vent hole of the motor can be connected with a vacuumizing device to generate a negative pressure adsorption effect.

The present disclosure provides a pump which can be manufactured in a few steps. The pump according to the present disclosure includes a motor and an impeller. The motor includes a rotor. The rotor includes a magnet and a magnet cover. The magnet cover covers at least a part of the magnet. The magnet cover is formed in a hollow-rod shape along an extension direction of the axis. The magnet cover includes an outer peripheral surface, an end surface (namely, the first end face), and a plurality of insertion portions. The outer peripheral surface is along the extension direction. The end surface extends from one end of the outer peripheral surface in a direction intersecting (that is, in a direction orthogonal to) the extension direction. The insertion portions are formed so as to open at the end surface. The plurality of insertion portions are arranged annularly about the axis.

Disclosed are a rotor assembly, an annular electric motor, and a method for assembling an annular electric motor. The rotor assembly comprises: a rotor mounting portion (10), the rotor mounting portion (10) being annular and being provided with a plurality of mounting portion strip-shaped grooves (11) extending axially and spaced apart from each other in a circumferential direction; a plurality of lamination units (30), each lamination unit (30) being configured to retain one or more magnetic tile sets; and a plurality of mounting ribs (20), the mounting ribs (20) being fixedly connected to the lamination units (30), wherein during assembly of the rotor assembly, the plurality of lamination units (30) can move to mounting positions thereof on the rotor mounting portion (10) by means of the sliding of the mounting ribs (20) in the mounting portion strip-shaped grooves (11). The solution of the present disclosure has the advantages of being convenient to mount, reliable in structure, etc.

A rotor used for a motor includes a rotor core, and a plurality of permanent magnets embedded in a corresponding plurality of embedding holes in the rotor core configured to include flux barriers at both ends of the plurality of embedding holes in the rotor core and to include a plurality of magnetic poles. The rotor core includes a plurality of grooves on an outer peripheral surface, the plurality of grooves, with the two paired grooves, are away from an axis that becomes the q-axis when the motor is operated, and are arranged symmetrically about the axis, and the rotor core has such a cross-section that a first angle between two lines passing through the two grooves and the center of the rotor core is smaller than a second angle between the axis-side end face of the two flux barriers adjacent to each other across the axis.

This application relates to a hub motor, comprising: a stator assembly including windings and a motor shaft fixed thereto, the motor shaft having a locating surface; a rotor assembly including a rotor housing, and an outer rotor module and an inner rotor module fixed thereto, the outer rotor module surrounding the outer side of the inner rotor module, the motor shaft extending between the outer rotor module and the inner rotor module; a support assembly including a bearing and a bushing, the motor shaft passing through the rotor housing, the bearing connecting the motor shaft and the rotor housing, and the bushing fitted onto the motor shaft; the support assembly is detachable and installable to allow the hub motor to switch between a normal state and a field-weakening state; in the normal state, the bushing is installed on the bearing at the end opposite to the locating surface, and the bearing abuts against the locating surface; in the field-weakening state, the bushing is installed on the bearing at the end near the locating surface, with both ends of the bushing abutting against the locating surface and the bearing respectively, and the bearing at the end opposite to the bushing abutting against the rotor housing. This hub motor can apply mechanical field-weakening technology in a dual-rotor motor while ensuring rotor housing rigidity and reducing the risk of scratches.

The rotor structure comprises a rotor shaft, the circumference of the rotor shaft is connected with a plastic sleeve, magnetic steel is embedded in the plastic sleeve, the two end faces of the magnetic steel are respectively provided with an annular groove, the two end faces of the magnetic steel are respectively provided with a plurality of hole grooves, and the plastic sleeve is of an injection molding structure. The annular groove and the hole grooves are formed in the two end faces of the magnetic steel respectively, the wrapping force of the plastic sleeve on the magnetic steel can be increased after the plastic sleeve is subjected to injection molding, and therefore the magnetic steel is prevented from cracking, and in addition, even if the magnetic steel is cracked, the situation that the dishwasher is blocked due to the fact that the magnetic steel 3 falls off can be effectively avoided; according to the utility model, the hole slot is arranged on the N-pole and S-pole connecting zero line of the magnetic steel, so that the problem that the N-pole and S-pole connecting zero line of the magnetic steel is easy to crack can be effectively solved.

The invention relates to the technical field of permanent magnet motors, in particular to a rotor topological structure. The permanent magnet mounting groove group comprises a first permanent magnet mounting groove and a second permanent magnet mounting groove which are symmetrically arranged about the d axis, and the permanent magnet group comprises a first permanent magnet arranged in the first permanent magnet mounting groove and a second permanent magnet arranged in the second permanent magnet mounting groove; an air slot group is arranged between any two adjacent permanent magnet mounting slot groups in the radial direction of the rotating shaft, the air slot group comprises a first air slot and a second air slot which are symmetrically arranged about the d axis, and the first air slot is communicated between the first permanent magnet mounting slots of the two adjacent magnet mounting slot groups; and the second air grooves are communicated between the second permanent magnet mounting grooves of the two adjacent magnet mounting groove groups. The rotor topological structure is provided with the first air slots and the second air slots, so that the permanent magnets and the air slots intersect with each other, the number of slots in the rotor is reduced, the complexity in the industrial manufacturing process is reduced, and the production efficiency is improved.

The present invention provides a method for manufacturing a rotor equipped with permanent magnets in a Halbach arrangement, which is easy to assemble. [Solution] The process includes steps S1 of arranging a non-magnetic mold that forms a space corresponding to the shapes of the rotor main magnet and rotor sub-magnet between itself and a magnetic mold, steps S2 of injecting magnet material, steps S3 of controlling the orientation magnetic flux of the magnet material using an orientation magnetic flux control magnet, steps S4 of magnetizing the magnet material to form the rotor main magnet and rotor sub-magnet, steps S5 of releasing the rotor main magnet and rotor sub-magnet from the mold, and steps S6 of assembling the rotor main magnet and rotor sub-magnet into the rotor back yoke and rotor magnetic body, wherein the orientation magnetic flux control magnet controls the orientation magnetic flux of the rotor main magnet in a direction parallel to the radial direction and controls the orientation magnetic flux of the rotor sub-magnet in a direction parallel to the circumferential direction.

A rotor includes a shaft, an annular rotor core fixed to the shaft and having a magnet insertion hole, and a permanent magnet disposed in a magnet insertion hole. The rotor core has a center hole which is formed at a center of the rotor core in a radial direction and in which the shaft is inserted, a plurality of slits formed around the center hole and each elongated in a circumferential direction of the rotor core, a rib formed between two of the plurality of slits, which are adjacent to each other in the circumferential direction, of the plurality of slits, and a groove portion formed to extend outward in the radial direction from the center hole. The groove portion is located on an inner side of the rib in the radial direction. A width T of the rib in the circumferential direction and a width W of the groove portion in the circumferential direction satisfy T>W.

A motor according to the present invention includes: a stator having a stator core and a coil; a rotor having a rotary shaft and a rotation body; a shaft bearing rotatably supporting the rotor; and a molding resin covering the stator. The motor has a coil end that is the coil protruding from the stator core in a shaft center X direction, and has a non-combustible layer provided to cover the coil end. The non-combustible layer is a metallic cover made of, for example, metal. The metallic cover is disposed to cover a periphery of a coil assembly in which the coil is formed on the stator core through an insulator. The metallic cover is integrated with the coil assembly by a molding resin.

A manufacturing method of a rotor (1) for a rotating electric machine includes a temporary magnetization process for temporarily magnetizing a portion of each of the multiple segment magnets (3), a magnetic flux measurement process for measuring the magnetic flux amount of each temporarily magnetized segment magnet (3), a magnet selection process for selecting the multiple segment magnets (3) to be used from each of the segment magnets (3) based on the measured magnetic flux amount, a magnet bonding process for arranging each of the selected segment magnets (3) having different magnetic polarities alternately in the circumferential direction of the shaft portion and attaching them to the shaft portion with an adhesive, a magnet position correction process for applying pressure to each segment magnet (3) within the curing time of the adhesive and correcting the position of each segment magnet (3), an adhesive curing process for curing the adhesive, and a final magnetization process for final magnetizing each segment magnet (3) after the adhesive has cured.

Provided in the present application are a rotor lamination and a forming method therefor, a rotor iron core, a servo motor and a robot. The rotor lamination comprises a lamination body (1), the lamination body (1) having a rotor outer circumference (2); under one pole, the rotor outer circumference (2) of the lamination body (1) is provided with a groove (3) recessed inwards relative to the rotor outer circumference (2) and / or a protrusion (4) protruding outwards relative to the rotor outer circumference (2). According to the rotor lamination of the present application, the stamping precision of the outer contour of the rotor lamination can be improved, allowing a reduction in the cogging torque and torque ripple of the electric motor, and thereby improving the positioning accuracy of the robot.

The utility model discloses a surface mount type rotor and permanent magnet synchronous motor, surface mount type rotor and stator cooperation, it includes rotor core, a plurality of permanent magnet, be provided with the circumference cooperation surface with stator on rotor core, be provided with a plurality of installation recess on the circumference cooperation surface, the portion of rotor core between two adjacent installation recess forms a stopper, the cross section of permanent magnet is rectangular, and it includes two end faces and two lateral surface, a plurality of permanent magnet is embedded in a plurality of installation recesses one by one to make a plurality of permanent magnet and rotor core fixed cooperation, the distance between two lateral surface of permanent magnet is greater than the depth of installation recess, and two adjacent permanent magnet and stopper jointly enclose a recess position. The utility model discloses utilize installation recess to position permanent magnet, improved the installation precision of permanent magnet on rotor core, avoided the pole arc coefficient deviation, improved the consistency of motor performance, promoted the cooling effect of permanent magnet synchronous motor simultaneously.

The invention relates to a method (40) for mounting a permanent magnet (30), which has a reservoir (36) on its outer side, on a magnet carrier (26) which has a pocket (28). The reservoir (36) is filled with an adhesive (38), and the permanent magnet (30) is inserted into the pocket (28). The adhesive (38) is subsequently cured. The invention further relates to an electric machine (4).

The present application provides a brushless motor including a housing, a front cover, a bracket, a stator assembly, a rotor assembly, a circuit board, and a sensor assembly. The stator assembly is provided around the rotor assembly, and the rotor assembly includes a rotor shaft and a permanent magnet fixedly sleeved on the rotor shaft. The rotor shaft includes a rotor shaft body and two flat portions formed by recessing the rotor shaft body. The sensor assembly includes a sensor magnet and a Hall sensor, and the sensor magnet includes a magnet body and a fixing hole formed through the magnet body. The flat portions are fixed in the fixing hole. Magnetizing directions of the permanent magnet and the sensor magnet are perpendicular to the flat portions. The brushless motor has consistent directions for the main and secondary magnetic fields, high rotation data detection accuracy, and excellent torque performance.

The present invention relates to a permanent magnet electric motor rotor, an inner rotor electric motor and an electric pump. The permanent magnet electric motor rotor comprises a rotor core, a rotor shaft axially penetrating the rotor core, a cage covering and fixed to the rotor core, permanent magnets mounted on the cage, and a protective sleeve arranged on the outer peripheries of the cage and the permanent magnets, wherein the permanent magnets are radially sandwiched between the rotor core and the protective sleeve; the cage comprises a first cover body and a second cover body which respectively cover two axial end faces of the rotor core; the rotor shaft penetrates the first cover body and the second cover body and is hermetically connected to the first cover body and the second cover body; and axial ends of the protective sleeve are respectively hermetically fixed to the first cover body and the second cover body. In the present invention, the rotor core is hermetically connected by means of the cage; and the outer wall of the rotor is sealed by means of the protective sleeve, thereby improving manufacturing efficiency, reducing an electromagnetic air gap and reducing the electric motor volume.

This application relates to a rotor core, a rotor assembly, a motor, and a vehicle. The rotor core includes magnetic slots and a first set of magnetic barrier slots. Multiple magnetic slots are spaced apart circumferentially along the rotor core and extend radially along the rotor core. The first set of magnetic barrier slots is disposed between two adjacent magnetic slots and includes multiple magnetic barrier slots arranged sequentially radially along the rotor core. By placing the first set of magnetic barrier slots between two adjacent magnetic slots and including multiple magnetic barrier slots arranged sequentially radially along the rotor core, the air in the magnetic barrier slots has low permeability. Since magnetic reluctance increases and decreases with permeability, the arrangement of the first set of magnetic barrier slots increases the d-axis magnetic reluctance between two adjacent permanent magnet assemblies and significantly reduces the d-axis inductance. This increases the salient pole ratio and the proportion of reluctance torque in the motor, which is beneficial for improving the motor's field weakening speed-up capability.

A permanent magnet (100) used in a linear / rotary actuator comprises the following on opposing surfaces: a first pole group having one first pole (1) or a plurality of first poles (1) at equal intervals in a circumferential direction, the first pole(s) (1) generating magnetic flux from an outer diameter side toward an inner diameter side in a radial direction; and a second pole group having one second pole (2) or a plurality of second poles (2) at equal intervals in the circumferential direction, the second pole(s) (2) generating magnetic flux from the inner diameter side toward the outer diameter side in the radial direction. The first pole group is disposed at a position that is separated from the second pole group by a prescribed distance in the axial direction and shifted in phase by an electrical angle of 180 degrees in the circumferential direction. A magnet region between the magnetic pole centers of the N pole or the S pole appearing on opposing surfaces of the first pole (1) and the adjacent second pole (2) is magnetized such that the orientation of the magnetic flux has at least a circumferential component.

This conveyance plate includes a base and one or more support protrusions. A motor core having a through-hole extending in the axial direction in a central portion is mounted on the base. The one or more support protrusions are provided on one surface of the base on which the motor core is placed, and come into contact with one or more protrusions or recesses formed on the inner peripheral surface of the through-hole to position the motor core.

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).