328results about "Suppressing electromagnetic interference" patented technology

The invention provides a motor, a camera module and electronic equipment. The motor comprises a fixed base, a movable carrying table, a driving assembly and a self-locking assembly. The moving platform deck is connected to the fixed base, the moving platform deck is used for bearing an optical element and driving the optical element to move, and the fixed base is provided with a plurality of pin holes; the driving assembly is connected with the moving platform deck and the fixed base and used for driving the moving platform deck to move relative to the fixed base; the self-locking assembly is installed on the moving carrying table and comprises a magnetic driving piece, a pin shaft and an extending magnetic attraction piece. Wherein the magnetic driving piece is used for driving the pin shaft to extend out relative to the movable carrying table and be inserted into the pin hole so as to lock the movable carrying table and the fixed base, and the extending magnetic attraction piece is used for locking the pin shaft in the pin hole. According to the motor provided by the invention, the pin shaft is inserted into the pin hole of the fixed base, so that stable locking of the moving carrying table and the fixed base can be realized.

An electric pump comprises a stator assembly, the stator assembly comprises a stator core and a winding, the winding comprises a main body section, a first section and a second section, the main body section connects the first section and the second section; the stator core comprises a core tooth part, a core yoke part and a core neck part, the core yoke part is located at the outer periphery of the winding; a first reference plane is defined, the first reference plane coincides with the axial center axis of the core tooth part and the axial center axis of the core neck part, a section of the stator assembly is made along the first reference plane, the upper end of the section of the main body section is flush with the upper end of the section of the core yoke part body part, the lower end of the section of the main body section is flush with the lower end of the section of the core yoke part body part; the electric pump further comprises a shielding piece, the material of the shielding piece is a conductive metal material, at least part of the shielding piece is located at the outer periphery of at least one of the first section and the second section; thus it is beneficial to reduce the electromagnetic waves radiated to the outside, thereby it is beneficial to reduce the interference of the electric pump to the outside.

To simplify assembly and to reduce the susceptibility to faults of a linear drive comprising a transmission housing, an interference-suppressed electric motor which is connected thereto and is accommodated in a motor housing and which by way of a rotor accommodated in the motor housing drives a shaft which is mounted on a rear shaft end in a rear shaft bearing and is mounted on a front shaft end, a commutator for the transmission of current to the rotor, electrical and / or electronic components for interference suppression of the electric motor, it is proposed that the rear shaft bearing is mounted in the motor housing, the front shaft bearing is mounted in the transmission housing and the electrical and / or electronic components required for interference suppression of the electric motor are arranged on an interference suppression circuit board arranged between the front shaft bearing and the commutator.

The invention provides a high-stability permanent magnet magnetic motor, and relates to the field of magnetic motors, the high-stability permanent magnet magnetic motor comprises a shell and a stable rotation mechanism, the stable rotation mechanism is arranged in the shell, a heat dissipation mechanism is arranged in the shell, one side of the surface of the shell is connected with a connecting seat, and a damping mechanism is arranged on the surface of the connecting seat. The permanent magnet design of a multi-layer composite structure is adopted in the stable rotation mechanism, an outer-layer nanoscale antimagnetic material isolates external interference, a middle-layer rare earth permanent magnet material achieves temperature compensation, the demagnetization risk of the permanent magnet is reduced, the frequency of replacement caused by performance reduction of the permanent magnet is reduced, and through ceramic balls and annular grooves which are precisely matched, the stability of the permanent magnet is improved. The precise relative position of the rotor and the stator core is effectively guaranteed, the vibration of the motor during operation can be efficiently absorbed through the damping mechanism, the influence of the vibration on the internal structure of the motor is reduced, the motor can still operate stably under complex working conditions, and the operation reliability of equipment is greatly improved.

The invention provides a motor, an electric driving device, a chassis and electric equipment, the motor comprises a shell, a stator and an insulation connecting member, the shell is provided with an accommodating cavity, the stator is accommodated in the accommodating cavity, and the insulation connecting member is used for connecting the stator and the shell, so that the stator and the shell are relatively fixed and mutually insulated. According to the motor provided by the embodiment of the invention, the stator and the shell are connected through the insulating connecting component, so that the stator and the shell can be relatively fixed, the stator and the shell can be effectively insulated and separated, and the condition that current on the stator is transmitted to a bearing of the motor through the shell is effectively improved; therefore, the risk of electrocorrosion of the bearing is effectively reduced, and the performance of the motor is effectively improved.

To provide propulsion systems for an aircraft.SOLUTION: In one embodiment, an electrical propulsion system includes: an electrical motor configured to drive one or more propellers of an aircraft; a capacitor configured to stabilize a direct current (DC) bus voltage; a first inverter circuit coupled to the capacitor and configured to convert the DC bus voltage to alternate current (AC) voltages to drive a first set of stator windings of the electrical motor, in response to a first pulse width modulation (PWM) vector; and a second inverter circuit coupled to the capacitor and configured to convert the DC bus voltage to AC voltages to drive a second set of stator windings of the electrical motor, in response to a second PWM vector. The first PWM vector and the second PWM vector are substantially equal and opposite vectors.SELECTED DRAWING: Figure 11

The utility model discloses a bus filtering device of an electric drive assembly and the electric drive assembly. The bus filtering device comprises: a support member; the first magnetic ring, the first group of Y capacitors, the second group of Y capacitors, the first X capacitor, the second X capacitor, the second magnetic ring, the third group of Y capacitors, the third X capacitor, the fourth X capacitor and the fifth X capacitor are sequentially arranged on the supporting piece from the output end to the input end of the bus; wherein the bus penetrates through the first magnetic ring, the second magnetic ring and the supporting piece, and the first group of Y capacitors, the second group of Y capacitors, the first X capacitor, the second X capacitor, the third group of Y capacitors, the third X capacitor, the fourth X capacitor and the fifth X capacitor are connected with the bus. In this way, the problem that the conducted emission test of a controller product exceeds the standard is solved.

The present invention discloses an electronic control assembly and electrical equipment. The electronic control assembly includes: an electronic control board, which is provided with a first filter circuit and a power supply circuit for supplying power to an electrical load. The power supply circuit includes a power input terminal, a rectifier circuit, an IPM module, and a power output terminal, wherein the power input terminal, the rectifier circuit, the IPM module, and the power output terminal are connected in sequence, and a first end of the first filter circuit is connected to the power supply circuit; a metal plate, which is arranged in parallel with one side of the electronic control board and spaced apart from the metal plate; the metal plate is electrically connected to the housing of the electrical load; and a second end of the first filter circuit is electrically connected to the metal plate. The present invention reduces EMC costs, improves production efficiency, and facilitates reducing the installation volume of EMC in electrical equipment.

The invention discloses a magnet vane for a magnetomotive generator set and a preparation method of the magnet vane, belongs to the technical field of magnet vanes, and aims to solve the problems that an existing magnet vane is prone to generating large eddy-current loss, and stress on the inner side and the outer side is unbalanced due to the fact that the layers of the novel magnet vane are arranged to be horizontal planes. Through the multi-layer composite structure of the supporting layer, the magnetic conductive layer and the diamagnetic layer, the total magnetic conductivity can be increased, an effective impedance matching interface can be formed, and through the arrangement of the inclined plane, the cooperation with the nanometer glue for bonding, the stress distribution and the laminating effect of the lamination are optimized, so that the lamination quality is improved. The wave-absorbing film is formed by compounding nanoscale magnetic particles and light organic polymers, the wave-absorbing performance is guaranteed, the weight of the magnetism isolating plate is greatly reduced, the requirement for light weight of electronic equipment is met, magnetic through holes are formed in the periphery of the magnetism isolating plate in a circular array mode, the forming area of the magnetic through holes is in a kidney shape and is increased from inside to outside, and the magnetic through holes are formed in the periphery of the magnetism isolating plate in a circular array mode. The magnetic through holes have ventilation and heat dissipation functions and directionally guide a magnetic field at the same time, and energy waste is reduced.

An electronic oil pump comprises a stator assembly and an electric control board assembly, the stator assembly is electrically connected with the electric control board assembly, the stator assembly comprises a stator core and a winding, the stator core can provide support for winding winding; the electronic oil pump comprises a shielding piece, the stator assembly, at least part of the shielding piece and the electric control board assembly are distributed along the axial direction of the electronic oil pump, at least part of the shielding piece is located between the stator assembly and the electric control board assembly; the material of the shielding piece is a conductive metal material, at least part of the shielding piece covers at least part of the winding; thus, it is beneficial to reduce the influence of the electromagnetic wave generated by the winding on the performance of the electric control board assembly.

The present disclosure relates to an electric motor assembly configured to mitigate electrically induced bearing damage (EIBD). More specifically, the electric motor assembly includes a chassis, a stator, a winding coil, a rotor, a shaft, conductors, a circuit, and insulators. The circuit can include one or more transformers capable of generating an injection voltage, which can mitigate shaft voltages that cause EIBD.

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 utility model provides a kind of plastic shell electronic oil pump, including plastic shell, motor stator, PCB board, metal back cover, ground terminal and ground copper bar;The lower end of ground terminal is connected with motor stator core, and upper end is welded with PCB board;Metal insert is injection molded outside plastic shell;One end of ground copper bar is welded with PCB board, and the other end is connected with metal insert.The electronic oil pump provided by the utility model has the advantages of lightweight, high power density, low cost, etc., and can meet the CLASS3 requirement of EMC parts.

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.

A drive device according to the present disclosure includes: a motor including a motor main body having a rotor and two sets of windings, a frame configured to accommodate the motor main body, and a housing fitted to the frame; and a control unit attached to the motor and configured to control a current supplied to the two sets of windings, in which the control unit includes a wiring board having a first surface facing the housing and a second surface opposite to the first surface, a first inverter circuit and a second inverter circuit configured to independently supply a current to each of the two sets of windings, and a CPU configured to control the first inverter circuit and the second inverter circuit, a first switching element constituting the first inverter circuit is disposed on the first surface of the wiring board, and a second switching element constituting the second inverter circuit is disposed on the second surface of the wiring board.

The invention discloses an end effect suppression device, a design method and a cylindrical permanent magnet linear motor, and relates to the technical field of linear motors, the end effect suppression device comprises a magnetic circuit compensation structure installed at at least one end of a primary motor; the magnetic circuit compensation structure consists of at least two layers of sleeves which are concentrically nested and are made of a high-permeability material, and an axial guide mechanism is arranged between adjacent sleeve layers, so that the inner-layer sleeve can slide along the axial direction of the motor relative to the outer-layer sleeve; the outermost layer of sleeve is fixedly connected with the end part of the primary, and the innermost layer of sleeve is arranged to be capable of keeping coupling with the secondary in the operation process of the motor, so that continuous magnetic circuit connection is formed among the secondary, the magnetic circuit compensation structure and the primary, and an air gap magnetic field at the end part of the primary is guided and reconstructed. According to the invention, the end magnetic field distortion and magnetic resistance are directly suppressed from the physical level, and the output stability, control precision and environmental adaptability of the motor are improved.

The utility model relates to an elevator system, in particular to a portal crane driving and controlling all-in-one machine which comprises a shell, a driving motor and an electric control board. The shell comprises a containing box, a supporting frame and a box cover, the supporting frame and the box cover are connected to the containing box, and the supporting frame is arranged between the containing box and the box cover and faces a side face opening of the containing box. The area defined by the supporting frame and the containing box is a motor area, and the area defined by the box cover, the containing box and the supporting frame is a control area. The driving motor is contained in the motor area, connected to the supporting frame and comprises a motor shaft which controllably rotates along the middle shaft, and the motor shaft penetrates through the containing box. The electric control board is contained in the control area and electrically connected with the driving motor, the electric control board comprises a board body and a component set, the board body is arranged between the supporting frame and the box cover, the component set is connected to the side face, close to the supporting frame, of the board body, and the board body is attached to the outer wall of the supporting frame. The driving motor and the electric control board are arranged in a staggered mode, so that the space utilization rate in the shell is improved, and the size of the portal crane driving and controlling all-in-one machine is reduced.

The utility model relates to the field of rotary mechanical equipment, and discloses a rotary table which comprises a case, a base, a rotating shaft, a motor rotor, a motor stator, an adapter ring and a workbench are arranged on the case, one end of the rotating shaft is coaxially and rotatably connected to the base through a bearing, and the other end of the rotating shaft is connected with the workbench. The motor rotor and the motor stator are located between the base and the workbench, the motor stator is coaxially arranged on the base, the motor rotor is connected to the workbench through an adapter ring, the motor rotor and the motor stator interact to drive the rotating shaft to drive the workbench to rotate, and a wiring ring is arranged between the motor stator and the base. A strong wire channel and a weak wire channel are arranged on the wiring ring, a connecting wire for connecting an external power supply and a motor stator is arranged in the strong wire channel, a connecting wire for connecting the external power supply and an encoder is arranged in the weak wire channel, and wire inlet holes corresponding to the strong wire channel and the weak wire channel are formed in the wiring ring. The rotary table has the effect of improving the working stability of the rotary table.

The present invention provides a motor shaft seal, comprising: a housing having a first escape hole for evading the motor shaft; a housing having a storage space connected to the first escape hole; a first conductive structure movably disposed on the housing and conductively connected to the housing, and located within the storage space; the first conductive structure having a first conductive state in contact with the motor shaft and a first separated state in which the first conductive structure is separated from the motor shaft; a first electromagnet disposed on the first conductive structure so that when current flows through the motor shaft, the first conductive structure switches from the first separated state to the first conductive state; a second electromagnet disposed opposite the first electromagnet and located on either side of the motor shaft; a first elastic return member disposed between the first conductive structure and the inner wall of the housing to maintain the first conductive structure in the first separated state; and a conductive wire disposed on the outer wall of the housing. The technical solution of this application effectively solves the problem of motor shaft deviation.

The application discloses a solderless connection integrated motor and a blender, which comprises a circuit board and a motor body, the motor body comprises a motor shell and an end cover assembly; the end cover assembly comprises an end cover, an EMC element and a flexible connecting body, the end cover is installed on the motor shell, and the EMC element is arranged outside the end cover; the flexible connecting body is inserted into the end cover and fixes an A-end pin of the EMC element on the end cover; the circuit board is inserted on the end cover, and the A-end pin of the EMC element is in conductive connection with the circuit board through the flexible connecting body; a B-end pin of the EMC element penetrates through the end cover and extends downwards and is in conductive connection with the motor shell. The solderless connection integrated motor and the blender are simple in assembly, low in cost and suitable for automatic production.

Power electronic device (11) comprising a semiconductor switch (15) and a sensor module (1) which is in thermal contact with the semiconductor switch (15) and has at least one measuring transmitter (2), wherein the sensor module (1) has at least one interference suppression element (3) for reducing interference signals, wherein the sensor module (1) has an input contact (6) and an output contact (7), wherein the measuring transmitter (2) and the interference suppression element (3) are arranged in a parallel circuit (8), wherein the parallel circuit (8) is electrically connected on the one hand to the input contact (6) and on the other hand to the output contact (7), wherein the input contact (6) and the output contact (7) are each designed as an unshielded cable (9).

A cooling jacket for an electric motor having a configuration for reducing electromagnetic noise comprises a stator outer housing substantially in the form of a hollow cylinder surrounding the cooling jacket which is also substantially in the form of a hollow cylinder; a stator core in the form of a hollow cylinder located inside the cooling jacket; and a rotor rotatably mounted inside the stator core. The stator outer housing has an end portion configured to form a bearing housing of the motor. The cooling jacket comprises a bearing housing cooling portion and a stator cooling portion; at least one O-ring between the cooling jacket and the stator outer housing, and at least one O-ring between the bearing housing cooling portion and the stator cooling portion; and a gap between the cooling jacket and the stator outer housing.

The utility model discloses a motor end cover, which comprises an end cover body and a conductive assembly, a plurality of mounting shells are symmetrically arranged on two sides of the mounting side of the end cover body, the conductive assembly comprises conductive sheets, connecting pieces and capacitors, the upper ends of the conductive sheets are exposed in the mounting shells, and the conductive sheets are electrically connected with the capacitors through the connecting pieces. The connecting part is used for being electrically connected with the upper end of the conducting strip, the clamping part extends from the lower end of the connecting part along the side wall of the mounting shell, the supporting part extends from the tail end of the clamping part to the center line, the lower end of the capacitor abuts against the supporting part, and the two sides of the capacitor abut against the clamping part. And a baffle plate for limiting the front and rear ends of the capacitor is arranged between the mounting shells at one end. According to the utility model, electromagnetic interference generated by vibration of the capacitor is reduced by limiting the capacitor, so that the capacitor can better exert filtering and energy storage effects, high-frequency noise and electromagnetic radiation generated by the motor are effectively inhibited, and the electromagnetic compatibility level of the motor is improved.

The utility model relates to the field of magnetic rings for motors, and discloses a magnetic ring for a high-strength transmission motor. The end, opposite to the buffering connector, of the connecting rod is provided with an inserting rod, a through groove is formed in the inserting rod, a reset spring is installed in the through groove, the two ends of the reset spring are connected with fixing clamping blocks, and the end, close to the first half magnetic ring body, of the second half magnetic ring body is provided with an adaptive clamping sleeve. An adjusting slot matched with the fixed clamping block is formed in the surface of the adaptive clamping sleeve; the distance between the first semi-magnetic ring body and the second semi-magnetic ring body is adjusted according to specific installation requirements, during adjustment, the distance between an insertion rod and an adaptive clamping sleeve can be adjusted by pressing a fixing clamping block inwards, then an anti-disengaging fixing screw is screwed into an anti-disengaging threaded hole, anti-disengaging fixing can be conducted on the fixing clamping block from the side edge, and the anti-disengaging effect is achieved. In the using process, even if large vibration occurs, falling is not prone to occurring, and the stability of the whole device in the using process is improved.

An EMI filter including a core forming a closed magnetic circuit, the core having first, second and third stems extending in parallel directions, the second stem being disposed between the first and third stems. The ends of the stem are connected by first and second bridge legs. A first coil, which is part of the first DC power line conductor, is disposed around the first stem and / or the first bridge leg. A second coil, which is part of a DC power line conductor, is disposed around the third stem and / or the second bridge leg. The compensation winding is arranged on the core and comprises a first compensation coil and a second compensation coil, the first compensation coil is arranged around the first core column and / or the first bridge leg, and the second compensation coil is arranged around the third core column and / or the second bridge leg for inducing a magnetic flux density in the second core column in the following direction. The direction is opposite to the direction of the magnetic flux density generated in the second stem by the direct current supplied through the first coil and through the second coil for reducing the resulting magnetic flux in the second stem.

A drive device includes a magnetic circuit unit including a first yoke, a second yoke, and a first magnet, a magnetic circuit unit including the first yoke, the second yoke, a second magnet, a first coil that is bonded to a focus lens, in which the magnetic circuit units drive the first coil and the focus lens by an electromagnetic force generated in the first coil, the first magnet corresponds to a first movement amount of movement of the focus lens, and the second magnet corresponds to a second movement amount of movement of the focus lens.

One embodiment relates to a controller and a motor assembly comprising same, the controller comprising: a controller housing; a controller cover disposed at an opening of the controller housing; a DM filter unit disposed over the controller cover; a CM filter unit disposed over the DM filter unit; a power module unit disposed under the controller cover; a substrate disposed under the power module unit; and a first connector and a second connector which penetrate the controller cover and have one side thereof disposed at the substrate. Accordingly, a heat generation problem can be resolved while miniaturization and weight lightening are realized, and some parts of the controller can be shared.

To provide a magnetic levitation device with low eddy current losses.SOLUTION: A rotor 3 has a disk-shaped or ring-shaped magnetically effective core 31. A magnetic levitation device comprises a stator 2 with a cup-shaped recess such that the rotor can be inserted into the recess. The stator has a plurality of coil cores 25, each having a longitudinal leg 26 and a magnetic pole piece 27. Each longitudinal leg extends from a first end 261 in an axial direction A to a second end 262. A contact surface 271 is arranged at the second end. Each magnetic pole piece extends from the contact surface at least partially in a radial direction R to an end face 272. The radial direction R is perpendicular to the axial direction A. The end face is arranged around the cup-shaped recess. At least one concentrated winding 61 is arranged at each longitudinal leg. The longitudinal leg is made of a first material, and the magnetic pole piece is made of a second material, the first and second materials being different.SELECTED DRAWING: Figure 1

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.