176results about "Shielding from electromagnetic fields" patented technology

The invention relates to a drive (30) with - at least one dynamoelectric rotary machine (1) arranged in a housing (2), with a winding system (5) arranged in a stator (4) and a rotor (6) separated therefrom by an air gap (23), which is rotatably mounted about an axis (12) via at least one bearing (10) of a B-side cup-shaped end shield (7), wherein the stator (4) and rotor (6) are located in a motor interior (18) - at least one inverter, wherein the inverter comprises at least some of the following components, such as power semiconductors, chokes, capacitors, control and regulation units and communication units, and is located in an inverter installation space (13) which is radially surrounded at least partially by the B-side end shield (7), wherein at least some components of the inverter are thermally connected to the end shield (7), in particular by thermally connecting heat-intensive components of the inverter,are arranged on an inner side wall (20) of the pot-shaped bearing shield (7), - wherein the converter is arranged axially between the dynamo-electric rotary machine (1) and the bearing of the B-side pot-shaped bearing shield (7), - wherein the motor interior (18) and the converter installation space (13) are separated by a shielding element (16).

Disclosed are a non-contact rotary transformer and a motor comprising same. A non-contact rotary transformer according to the present invention is a device for connecting a rotor of a motor with an external power source in a non-contact manner, and is characterized by comprising: a core part disposed inside a hollow motor shaft in a coaxial structure with the motor shaft; a primary coil part installed on the outer circumferential surface of the core part; a secondary coil part which is installed on an inner main surface of the motor shaft and surrounds the primary coil part at a predetermined interval (air gap) therefrom; and a rectifier circuit part which is coupled to the motor shaft and rotates in synchronization therewith, and which is electrically connected to the secondary coil part.

A drive unit (1) comprising an electric machine (2) and an inverter (4) is described. The electric machine (2) includes a machine housing (3), a stator arranged therein, and a rotor rotatably mounted relative to the stator. The inverter (4) comprises an inverter housing part (5) with an inverter circuit (7) arranged thereon, and a busbar holder (8) for maintaining an electrical connection between the inverter (4) and the electric machine (2), the inverter housing part (5) being mounted on the machine housing (3).The busbar holder (8) is positioned via a first positioning pin (P1) and a second positioning pin (P2), wherein the first positioning pin (P1) is fitted in the inverter housing part (5), in the busbar holder (8), and in the machine housing (3), and the second positioning pin (P2) is fitted in the inverter housing part (5) and in the busbar holder (8) without being fitted in the machine housing (3). Furthermore, a vehicle (13) with such a drive unit (1) is specified, as well as a method for manufacturing such a drive unit (1).

The invention provides a metal shielding sleeve for a shield pump, and belongs to the technical field of pumps. The problems that an existing shielding sleeve welding structure is high in leakage risk, large in machining difficulty and the like are solved. The metal shielding sleeve for the shield pump comprises an inner support made of metal and an integrally formed rotor shielding case, wherein the inner support and the rotor shielding case are enclosed to form a rotor cavity. The rotor shielding cover comprises a first transverse circular ring part, a first vertical circular ring part and a second transverse circular ring part which are in smooth connection, the first transverse circular ring part abuts against the outer peripheral surface of the inner support, a first fixing part at the upper end of the inner support is fixed to the first transverse circular ring part through elastic sealing, and the second transverse circular ring part is fixed to the lower end of the inner support through welding. By means of the integrally-formed structure, welding seams are reduced, upper-end elastic sealing and lower-end welding are combined, multiple elastic sealing pieces are matched, welding deviation and uneven stress are effectively compensated, sealing reliability is remarkably improved, and meanwhile electromagnetic performance stability and the manufacturing yield are guaranteed.

The utility model discloses a shielding structure and a motor, and relates to the technical field of motors. The shielding structure comprises a shell assembly, a light guide part and a limiting part. The shell assembly comprises a first metal shell and a second metal shell; the light guide piece is arranged between the first metal shell and the second metal shell; the limiting piece is arranged in the light guide piece in a penetrating mode and connected between the first metal shell and the second metal shell in an abutting mode, and the size of the limiting piece in the axial direction of the shielding structure is larger than that of the light guide piece in the axial direction of the shielding structure. According to the shielding structure provided by the invention, the possibility that the light guide part is extruded and damaged by the shell assembly can be reduced, the electric continuous lap joint area can be increased, the grounding impedance is reduced, and the electromagnetic compatibility of the motor is improved.

The utility model discloses a shielding type underwater thruster stator, which belongs to the technical field of underwater thrusters and comprises a metal shell, metal flanges are respectively welded at two ends of the metal shell, connecting welding holes are formed in the middle parts of the two metal flanges, shielding sleeves are fixedly sleeved in the two connecting welding holes, and the shielding sleeves are connected with the metal flanges. And the middle part of the shielding sleeve penetrates through the inner cavity of the metal shell. According to the utility model, the metal shell, the metal flange and the shielding sleeve are connected through welding, and the stator winding and the stator coil are arranged in the space formed by welding and sealing the metal shell, the metal flange and the shielding sleeve, so that a pressure compensation device is omitted, a sealing ring is not needed for sealing, and pressure compensation liquid is not needed; the problem of pressure compensation liquid leakage does not exist, the underwater propeller is designed to be of a pressure bearing structure and can work underwater for a long time, and the operation safety of the underwater propeller is greatly improved.

The invention provides a power assembly and a vehicle with the power assembly, the power assembly comprises an integrated shell and a stator rotating mechanism, the integrated shell is internally provided with a containing cavity, the containing cavity is internally provided with a motor shaft, a first motor unit and a second motor unit, the first motor unit and the second motor unit are both arranged on the motor shaft, and the stator rotating mechanism is arranged in the containing cavity. The first motor unit and the second motor unit are arranged in the axial direction of the motor shaft in a spaced mode. The stator rotating mechanism is connected with a stator of the second motor unit, and the stator rotating mechanism is rotatably arranged relative to the side wall of the containing cavity so as to adjust the stator angle of the second motor unit. By designing the stator rotating mechanism, the circumferential angle of the stator of the second motor unit is adjusted, and noise and resonance of the motor are reduced.

An encoder according to an embodiment includes: a shaft; an annular magnet connected to the shaft; a housing accommodating at least a portion of the shaft and the annular magnet; and a shield member protruding from the housing in a first direction orthogonal to an axial direction of the shaft.

The invention relates to the field of motors, and discloses a magnetic suspension doubly salient permanent magnet motor, which comprises a rotating assembly, and is characterized in that the rotating assembly comprises a rotor shaft and a stator part arranged at the outer side of the rotor shaft; the radial suspension assembly is arranged on the outer side of the rotor shaft; the axial suspension assembly is arranged on the outer side of the rotor shaft; the permanent magnet is located between the radial suspension assembly and the axial suspension assembly; the equipment combines the characteristics of a magnetic bearing and a doubly salient motor, due to the magnetic isolation effect of the permanent magnets, the armature magnetic field of the motor and the magnetic suspension bearing control magnetic field do not influence each other, independent control of torque and suspension force can be realized without adding a decoupling algorithm, the advantages of no mechanical wear, long service life and the like of the magnetic suspension bearing are exerted, and the magnetic suspension bearing is more stable in performance. And the purposes of low energy consumption and high efficiency of the doubly salient motor are achieved.

The application discloses a magnetic assembly of a motor, the motor, a suspension system and a vehicle. The magnetic assembly of the motor comprises a shielding member, the shielding member comprises a plurality of split members, the plurality of split members are matched to define a hollow cylindrical shape, and each split member is a magnetic conductive material piece. A first magnetic exciting member is arranged in the interior of the shielding member, and the first magnetic exciting member is adapted to be coupled with a second magnetic exciting member of the motor to cause relative movement of the first magnetic exciting member and the second magnetic exciting member. The magnetic assembly of the motor according to the embodiment of the application utilizes a plurality of split members to form a shielding member, utilizes the shielding member to reduce magnetic leakage, has the advantages of improving the utilization rate of magnetic force, improving the efficiency and power density of the motor and the like.

The invention discloses an ineffective potential suppression structure for a small inductosyn, and belongs to the technical field of inductosyn. The invention aims at the application requirements of high precision and small size of the inductosyn. A stator effective conductor of the inductosyn is arranged on the front surface of the stator substrate and is arranged along the whole circumference of the stator substrate; a stator substrate and a rotor substrate of the inductosyn are made of ferromagnetic materials. Stator ineffective conductors of the inductosyn are arranged on the back face of a stator substrate and are arranged along the whole circumference. The stator non-effective conductor and the stator effective conductor are connected through dense via holes; a stator effective conductor and a rotor conductor of the inductosyn are arranged in a radial alignment manner. According to the stator design scheme based on the double-layer metal-based MCPCB, the ferromagnetic material is used for improving the signal strength and shielding the ineffective potential, the precision and the signal-to-noise ratio are improved, meanwhile, the radial and axial space occupation is reduced, and the application requirement of the induction synchronizer in a small precise servo system is met.

The shaft of the motor is provided with: a cylindrical first shaft extending in the axial direction; a cover portion disposed at one axial end portion of the first shaft; a second shaft extending in one axial direction from the cover part; the first shaft through hole penetrates through the first shaft in the radial direction; and a second shaft through hole communicating with the inside of the first shaft and the outside space of the shaft. The cover portion and the second shaft are electrically conductive. The second shaft through hole is disposed closer to one side in the axial direction than the first shaft through hole. The second shaft is in contact with a de-energizing device electrically connecting the shaft with the housing of the motor.

The present disclosure relates to a choke system for reducing common mode current in an AC drive system. The present disclosure addresses common mode current and bearing current in an alternating current (AC) drive system by using an AC choke assembly integrated with a shielded coaxial electrical cable. This design weakens common mode current and ensures electromagnetic compatibility. The AC choke assembly includes a magnetic core with an axial bore that receives a coaxial electrical cable. The cable is surrounded by a metal housing and insulated by a dielectric separator. An optional dielectric outer cover may further insulate the metal housing. Thermal interface pastes may be used to maximize heat transfer between layers of an AC choke. One side of the metal housing is connected to the first set of coaxial cable shield ends, or the other side may be connected to a traction drive unit (TDU) or a traction power inverter module (TPIM). Alternatively, the AC choke may be located in a middle section of the coaxial cable.

The application provides a motor, and belongs to the technical field of motors.The motor comprises a shell, motor windings and a magneto-electric encoder arranged on the inner and outer sides of the shell respectively; the motor further comprises a protection structure arranged between the motor windings and the magneto-electric encoder, and the protection structure is configured to protect the magneto-electric encoder; the protection structure comprises a magnetic isolation part and a heat insulation part; the magnetic isolation part is configured to shield the alternating magnetic field generated by the motor windings from being transmitted to the magneto-electric encoder to protect the magneto-electric encoder, and the heat insulation part is configured to block the heat generated by the motor windings from being transmitted to the magneto-electric encoder to protect the magneto-electric encoder doubly. The protection structure composed of the heat insulation part and the magnetic isolation part can protect the magneto-electric encoder in the motor doubly, and the stability of the motor during operation is improved as a whole.

A rotary electric device of the present disclosure includes: a rotary electric machine including a rotating shaft; a control unit disposed side by side with the rotary electric machine in an axial direction along an axis of the rotating shaft and configured to control the rotary electric machine; and an electromagnetic shield covering the control unit. The control unit includes a control board extending in the axial direction, an external connection terminal being connected to the control board, and a filter configured to attenuate a noise component to be propagated to the external connection terminal. The electromagnetic shield is formed in a tubular shape covering the entire control board and including a first top portion provided with a through-hole into which the external connection terminal is inserted, and a second top portion disposed closer to the rotary electric machine than the first top portion. At least a part of the filter is mounted on the control board and is disposed between the first top portion and the second top portion in the axial direction.

The application relates to the motor technical field and discloses a brushless motor system and a treadmill adopting the system. The brushless motor system comprises an inner rotation brushless motor, an induction module and a mounting module. An NS pole magnet is fixedly installed on an output shaft of the inner rotation brushless motor. The NS pole magnet cooperates with the induction module to perform non-contact induction sampling. The induction module is fixed at an end of the mounting module and the output shaft of the inner rotation brushless motor. An anti-interference module is arranged between the mounting module and the inner rotation brushless motor. When vibration is generated, the anti-interference module drives the induction module and the NS pole magnet to keep central alignment, the induction collection part of the induction module cannot be separated from the collection area, the magnetic field sampling is continuous, and the stability of an encoder output signal is improved.

To achieve both noise shielding performance for reducing magnetic field noise and electric field noise and miniaturization of a shielding structure by verifying influence of the electric field noise in particular in a resolver and efficiently shielding the electric field noise.SOLUTION: An electromagnetic shielding structure of a resolver that detects a rotation angle of a motor includes a resolver stator having a resolver stator core formed by stacking a plurality of electromagnetic steel sheets and a resolver stator coil wound around the resolver stator core, and a coil portion shielding member having an electric field shielding effect and disposed in an axis-side space where the resolver stator faces a motor rotor of the motor in a rotation axis direction of the motor so as to cover the resolver stator coil.SELECTED DRAWING: Figure 2

An actuator assembly or rotary joint for a device includes a rotating portion, a stationary portion, and a clock spring. The rotating portion is configured to connect the stationary portion through the interface. The fixed portion and the rotating portion structurally form a space at least partially surrounded by the fixed portion and the rotating portion. The clock spring is shaped to fit into the space and is configured to transmit at least a power signal or a data signal from the rotating portion to the stationary portion.

The disclosed vehicle drive device (10) includes: motor housings (11,12), a gearbox housing (13), an inverter case (14), and a PN line (9). The motor housings (11,12) form respective exteriors of a left motor (1) and a right motor (2) that drive left and right wheels of a vehicle with electric power of a battery. The gearbox housing (13) incorporates therein a gearbox (3) that amplifies torque of the left and right motors and that transmits the amplified torque to the left and right wheels, is sandwiched between the left and right motor housings (11,12), and is offset in a front-rear direction from the left and right motor housings (11,12). The inverter case (14) incorporates therein a pair of semiconductor modules (6,7) and is arranged above the left and right motor housings (11,12). The PN line (9) connects the battery to the semiconductor modules (6,7) from a lower surface side of the inverter case (14) so as to pass through a first space (41).

A shielding type flexible linear transmission mechanism comprises an annular outer magnetic ring and a cylindrical inner magnetic bar matched in an annular magnetic bar. The outer magnetic ring comprises an outer sleeve, a magnetic steel installation pipe and an inner protection pipe which are arranged from outside to inside, a magnetic steel assembly is installed between the magnetic steel installation pipe and the inner protection pipe, and the magnetic steel assembly adopts a halbach arrangement structure; the magnetic poles of the magnetic steel assembly of the outer magnetic ring and the magnetic steel inside the inner magnetic bar are coupled in a directly opposite mode. A halbach arrangement structure is adopted in a magnetic steel assembly of an outer magnetic ring, main magnetic flux is gathered on the inner circle of the magnetic ring and directly faces and is coupled with the magnetic pole of a driven magnetic rod, the magnetic flux utilization rate is maximized, and the non-working face of the outer circle face is a weak magnetic face. The outer magnetic ring is also internally provided with a shielding pipe, so that the outer circular surface is shielded without magnetism, and attraction force generated by the outer magnetic ring, a bearing and other accessories is avoided; the protective sleeve is further embedded in the inner side of the outer magnetic ring in a sleeved mode, the protective sleeve is made of plastic, pressure resistance and abrasion resistance are achieved, friction can be reduced, the service life of the outer magnetic ring is prolonged, and meanwhile the maintenance cost is reduced.

A stator core of a rotary electric machine according to this embodiment comprises an annular core back section (14) and a plurality of tooth sections (13) that extend to the inner diameter side of the core back section (14), with a magnetic shielding cover (50) being further provided to the outer circumference side of the core back section (14). This stator core of a rotary electric machine is provided with first and second end section expansion core sections (15), a refrigerant inlet (61) and a refrigerant outlet (62), first and second header flow passages (63), a tooth section flow passage (60), a plurality of tooth section inlets (64), and a plurality of tooth section outlets (65), and is configured such that a refrigerant which is supplied from outside flows in from the refrigerant inlet (61), flows in order through the first header flow passage (63), the plurality of tooth section inlets (64), the tooth section flow passage (60), the plurality of tooth section outlets (65), and the second header flow passage (63), and flows out to the outside from the refrigerant outlet (62).

The invention relates to an electric motor unit (1) comprising an electric motor (2) having a rotor (3) and a stator (4), and a housing (5) with a housing wall that surrounds the electric motor (2). An insert (6) is positioned between the housing wall and the electric motor (2) and is positively connected to the housing wall. The present invention further relates to an electric axle drive system unit comprising such an electric motor unit (1). The present invention also relates to a method for manufacturing such an electric motor unit (1).

The invention relates to an electric machine having a shielding structure (1) for reducing capacitive coupling in an electric machine (2), in particular an electric synchronous machine, wherein the electric machine has a rotor (3) and a stator (4), wherein the stator (4) and the rotor (3) are spaced apart from one another by an air gap (5) defined between an outer contour of the stator (4) located closest to the rotor (3) and an outer contour of the rotor (3) located closest to the stator (4), and the stator (4) has winding heads (6), wherein the shielding structure (1) is coupled to a housing (7) of the electric machine (2) or to the ground of the electric machine (2), characterised in that the shielding structure (1) is located in the air gap (5) and / or the shielding structure (1) encloses the winding heads (6) of the stator (4).

Provided are an insulation shielding member which may insulate a coil and a stator core from each other, and simultaneously, shield an electric field caused by the coil, and a motor using the same. The insulation shielding member of the present disclosure may perform not only an insulation function but also a shielding function simultaneously, and shield the electric field caused by the coil to prevent corrosion from occurring in a bearing, thereby reducing the vibration and noise of the motor.

An actuator assembly or a revolute joint for a device includes a rotating portion, a fixed portion, and a clockspring. The rotating portion is configured to interface the fixed portion. The fixed portion and the rotating portion structurally form a space that is at least partially surrounded by the fixed portion and the rotating portion. The clockspring is shaped to fit into the space, and is configured to transmit at least an electrical power signal or a data signal from the rotating portion to the fixed portion.

This utility model discloses an integrated electrical control device, belonging to the technical field of electrical control equipment. It includes a device housing, comprising a motor housing and an electrical control housing. A stator assembly and a rotor assembly are installed inside the motor housing. Electrical control components are installed inside the electrical control housing. The electrical control housing is located on the rear end cover of the motor housing, and the electrical control housing and the rear end cover are an integral structure. This design integrates the electrical control housing onto the rear end cover of the motor to form a single component, achieving integration of the motor and motor controller. This reduces the overall size of the device, lowers costs, and offers advantages such as reduced wiring harness connections and increased reliability.

The invention relates to an electric machine (1) having a stator (2), a rotor (3) and an electric shielding structure (5) applied to at least one side (4a, 4b, 4c) of the stator (2) axially or radially facing the rotor (3) for capacitively decoupling the stator (2) from the rotor (3) by discharging capacitive electric currents in the direction of an electric mass in the form of a housing (6) which receives the stator (2).

The application discloses a shell assembly, an electric drive system and a vehicle, and solves the technical problem that the existing electric drive system with an external motor controller is large in size and is not conducive to vehicle mounting. The shell assembly comprises two shell units of a shell main body and an upper shell, wherein the shell main body is provided with a motor cavity for accommodating a motor and a flow-through groove for cooling liquid flow, and the upper shell is arranged on the shell main body and cooperates with the shell main body to form a control cavity for accommodating a control assembly. The flow-through groove of the shell main body is of an open structure, and the groove opening of the flow-through groove faces the control cavity, so that the control assembly can directly contact the cooling liquid in the cooling flow channel and be effectively cooled. The shell assembly provided by the application deeply integrates the shell of the motor and the control assembly thereof, integrates the controller cooling assembly and the shell in the shell assembly, reduces the volume of the assembly, is conducive to mounting, reduces the controller cooling components, and reduces the cost.

The invention provides a pump shield motor with high reliability and ultralow leakage rate, relates to the technical field of control motors, and solves the technical problem that the service life of a motor on a pump is short due to the fact that the motor and the pump are in dynamic seal in the prior art, and dynamic seal leakage is easy to occur. The device comprises a shell, a shielding sleeve, a stator assembly, a rotor assembly, a front end cover and a rear end cover, the shielding sleeve is located in the shell and divides the interior of the shell into an outer-layer stator cavity and an inner-layer rotor cavity, the rear end of the shell is connected with the rear end cover, and the closed end of the shielding sleeve is connected with the rear end cover. The front end of the shell, the opening end of the shielding sleeve and the front end cover are connected, the stator assembly is located in the outer-layer stator cavity and arranged on the shielding sleeve in a sleeving mode, the rotor assembly is located in the shielding sleeve and rotationally connected with the shielding sleeve, the inner-layer rotor cavity is communicated with the pump body, and a pump medium can circulate between the inner-layer rotor cavity and the pump body.