556results about "Suppressing electromagnetic interference" patented technology

A dual rotor motor includes: an inner rotor and an outer rotor disposed one after the other in a radial direction; a stator disposed between the inner rotor and the outer rotor; and a plurality of eccentric cores provided to alter a magnetic path connection state of the stator by rotating around a rotation axis eccentric to a center of the stator.

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.

The utility model discloses a miniature motor with strong anti-electromagnetic interference performance, comprising a motor casing, the inner wall of the motor casing is fixedly connected with a first shielding arc plate and a second shielding arc plate in sequence from front to back, and the outer surface of the motor casing is fixedly connected with an upper flux sleeve and a lower flux sleeve in sequence from top to bottom. The upper surface of the motor shell is fixedly connected with an upper shielding cover, and the lower surface of the motor shell is fixedly connected with a lower shielding cover. The first shielding arc plate, the second shielding arc plate, the upper magnetic conductive sleeve and the lower magnetic conductive sleeve are used for inner layer protection and outer layer protection of the micro motor respectively; the upper shielding cover and the lower shielding cover are used for protecting the ends at the two ends of the micro motor respectively, the first shielding arc plate and the second shielding arc plate provide main double-layer strong anti-electromagnetic interference with the upper magnetic conductive sleeve and the lower magnetic conductive sleeve, and the upper shielding cover and the lower shielding cover are used for assisting in providing anti-electromagnetic interference for the ends. Therefore, anti-electromagnetic interference at the inner layer, the outer layer and the end of the micro motor is provided.

The invention discloses a flexible motor. The flexible motor comprises a housing; the stator assembly is arranged in the shell; the outer rotating sleeve is rotationally connected into the shell, and a rotor assembly is arranged on the outer side of the outer rotating sleeve; the inner rotating shaft is rotationally connected into the outer rotating sleeve, a first clutch assembly is arranged between the bottom of the inner rotating shaft and the bottom side of the shell, a second clutch assembly is arranged between the inner rotating shaft and the outer rotating sleeve, the top end of the inner rotating shaft upwards extends out of the outer rotating sleeve and the shell, and the top end of the inner rotating shaft is rotationally connected with an output rod along the axis in the horizontal direction; a transmission assembly is arranged between the output rod and the outer rotating sleeve, and when the outer rotating sleeve rotates, the inner rotating shaft can be driven to rotate through the transmission assembly, and through control over the first clutch assembly and the second clutch assembly, the output rod can rotate along the axis of the output rod so as to output power; or the inclination angle can be adjusted according to use requirements so as to achieve the purposes of autorotation, reciprocating swinging or supporting and the like.

The invention relates to the technical field of electronic equipment, and discloses an anti-shake motor and electronic equipment. The anti-shake motor comprises a fixed structure, a movable structure and a spring system, the fixing structure comprises a shell and a magnet, the shell is provided with a containing cavity, and the magnet is connected to the shell; the movable structure comprises a movable seat and a coil, the movable seat is arranged in the containing cavity, the coil is connected to the movable seat, and the coil is arranged on one side, in the Z-axis direction, of the magnet and is opposite to the magnet; the spring system is arranged in the containing cavity, the spring system comprises a spring assembly, the spring assembly comprises an anti-shake spring, and the anti-shake spring is connected with the fixed structure and the movable structure; according to the anti-shake motor provided by the invention, the magnet is connected to the shell and the coil is connected to the coil, so that the movable structure can be prevented from moving due to magnetic interference, the anti-shake effect can be improved, and the production cost and the assembly cost can be reduced.

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.

The utility model discloses a stepping motor with drive control, which comprises a motor body and an integrated wire protection box, the motor body comprises a shell and a top cover, the shell is also provided with an open slot, the integrated wire protection box is fixed on the motor body, a drive control unit is arranged in the integrated wire protection box, and the drive control unit is fixed on the motor body. The open slot is communicated with the integrated wire protection box, a plurality of phase wire needles are fixed on the motor body, and the phase wire needles are led out from the open slot to be connected with a driving control unit in the integrated wire protection box. By arranging the driving control unit in the integrated wire protection box, on one hand, the integrated wire protection box plays a role in connecting an external power supply and a bridge of the motor body, and the working requirement of the motor body can be met without finding a matched driving control unit; and on the other hand, the integrated wire protection box is fixed on the open slot of the motor body through the connecting part, and the extension position is further arranged to completely wrap the open slot, so that better protection and anti-interference effects on the motor body are achieved.

The invention relates to the field of motors, and provides an integrated permanent magnet synchronous motor which comprises a motor body, a controller, a controller shell, a pi-shaped filter and a common mode filter, the controller shell is detachably connected with the motor body, and the controller, the pi-shaped filter and the common mode filter are all arranged in the controller shell. And the motor body, the pi-shaped filter and the common-mode filter are electrically connected with the controller. The permanent magnet synchronous motor solves the problems that a permanent magnet synchronous motor in the prior art is high in cost, tedious in installation and arrangement and low in integration degree, and achieves the technical effects that the motor body is connected with the controller shell, and then the controller is arranged in the controller shell, so that the motor body and the controller are integrated into a whole; therefore, the reliability of the motor is improved, the space utilization is saved, the maintenance cost is reduced, the efficiency is improved, the flexibility is enhanced, and the electromagnetic interference failure can be effectively avoided by arranging the pi-shaped filter and the common-mode filter.

A motor control unit, an electric drive assembly and a vehicle. The motor control unit includes a cooling assembly, a power assembly and a filtration assembly, where the cooling assembly includes a box, the box including a cooling portion, a first mounting portion and a second mounting portion, the first mounting portion being on a side of the cooling portion in a first direction, and the second mounting portion being on the other side of the cooling portion opposite the first mounting portion in the first direction. The power assembly is mounted at the first mounting portion, and the filtration assembly is mounted at the second mounting portion, such that the cooling portion simultaneously cools the power assembly and the filtration assembly.

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.

A motor assembly includes a brushless electric motor including a motor stator and a motor rotor configured for rotating within the motor stator. The motor stator includes a plurality of windings. The brushless electric motor also includes a rotor shaft non-rotatably connected to the motor rotor for rotating with the motor rotor and a resolver position sensor including a resolver stator and a resolver rotor configured for rotating within the resolver stator. The resolver rotor is non-rotatably connected to the rotor shaft for rotating with the rotor shaft. The resolver stator generates a signal based on a rotational position of the resolver rotor. The brushless electric motor also includes a rotor shaft bearing coupled to the rotor shaft and a bearing support supporting the rotor shaft bearing to allow the rotor shaft to rotate with respect to the bearing support. The bearing support is or includes an electromagnetic interference shield to reduce or block electromagnetic waves emitted by the windings of the motor stator from interfering with the signal generated by the resolver stator.

The utility model relates to a brushless motor of a portable food processor and the portable food processor, and the brushless motor comprises a motor housing which is provided with an inner cavity; the stator assembly is mounted in the inner cavity and comprises a stator bracket and a stator winding wound on the stator bracket; the rotor assembly is arranged in the stator assembly and comprises a rotor iron core, magnetic steel embedded in the rotor iron core and a rotor shaft fixed in the rotor iron core in a penetrating mode, and the two sides of the rotor shaft penetrate through the motor shell; the motor shell is provided with a lower end plate arranged at the bottom of the inner cavity, a plurality of slotted holes are formed in the lower end plate in a penetrating mode, and the slotted holes are distributed in a non-centrosymmetric mode relative to the axis of the rotor. According to the technical scheme of the utility model, electromagnetic interference on other components at the periphery of the brushless motor is avoided, and the safety performance is greatly improved.

The present invention discloses a horizontal rotary test bench for logging while drilling instruments, which improves the technical problem of electromagnetic interference to logging instruments. The device comprises a front support seat, a middle support seat and a rear support seat which are arranged in sequence, and a limiting part is respectively arranged on the middle support seat and the rear support seat, and the two limiting parts are used to jointly support and limit the logging instrument and keep the logging instrument horizontal; a shielding box is arranged on the front support seat; a power shaft, one end of which is located inside the shielding box and the other end extends to the outside of the shielding box; a motor power source is arranged in the shielding box and is used to control the rotation of the power shaft; a transmission part, one end of which is connected to the power shaft and the other end is used to connect to the logging instrument, and the transmission part is used to transmit the torque of the power shaft to the logging instrument, so that the logging instrument rotates along its own axis. The present invention can reduce electromagnetic interference, ensure the debugging accuracy of the logging instrument, and thus ensure the smooth progress of the drilling operation.

The utility model belongs to the technical field of motor controllers, and provides a high-voltage port filtering device, a motor controller and an electric driving system, and the high-voltage port filtering device comprises a first busbar, a second busbar and a magnetic ring structural member. The first busbar and the second busbar are arranged side by side, and the large side surface of the first busbar and the large side surface of the second busbar are oppositely arranged; the magnetic ring structural member is provided with a first via hole for the first busbar to pass through, a second via hole for the second busbar to pass through and a partition air gap, and the partition air gap is respectively communicated with the first via hole and the second via hole. According to the scheme, common-mode noise suppression and differential-mode noise suppression can be realized on the magnetic ring structural member, so that the electromagnetic compatibility of the filtering device is improved, the application number of corresponding capacitors is reduced, and the application cost is further reduced.

The utility model provides a coil assembly and an electronic expansion valve with the same, the coil assembly comprises a stator assembly, the stator assembly comprises a stator housing and a winding, the winding is arranged in the stator housing, and the stator housing is made of conductive material and magnetic conductive material; the wiring terminal is partially located on the outer side of the stator shell, and the wiring terminal is electrically connected with the winding; the wire harness comprises a shielding layer and a wire, one end of the wire is electrically connected with the wiring terminal, the other end of the wire is used for being electrically connected with wiring equipment, the shielding layer wraps the outer side of the wire and is provided with a conductive material, the end, close to the wiring terminal, of the shielding layer is a connecting end, the connecting end is electrically connected with the stator shell, and the shielding layer can be grounded. According to the technical scheme of the utility model, the problem of poor anti-electromagnetic interference capability of the coil assembly in the prior art can be solved.

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.

An electric machine including a stator, a rotor within the stator, and a shaft to which the rotor is mounted. The shaft extends through the stator. A first bearing and a second bearing support the shaft within the stator to allow the shaft and the rotor to rotate within the stator. The rotor is between the first bearing and the second bearing. A first magnetic core is at the shaft between the rotor and the first bearing. The first magnetic core is configured to suppress a bearing current flowing across the shaft, the first bearing, and the second bearing.

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 invention relates to a busbar arrangement (1) for connecting a first component (2) and a second component (3), the invention relates to a multi-phase current sensor, at least comprising a plurality of electrical conductors (4) for electrically transmitting a multi-phase current between a first component (2) and a second component (3), a measuring unit (5) for measuring the intensity of the current transmitted via each conductor (4), and a connection housing (6) for connecting the first component (2) to the second component (3), the conductor (4) extends through the connecting housing (6) and the at least one sensor (7) of the measuring unit (5) is arranged within the connecting housing (6).

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.

To provide an electric compressor capable of suppressing enlargement of a projection area of an inverter housing even when a filter component for an electromagnetic noise countermeasure is enlarged or the number of the filter components is increased.SOLUTION: A filter circuit 30 in an electric compressor 1 includes: a first filter circuit board 31 on which a plurality of electrolytic capacitors 51 is mounted; and a second filter circuit board 33 on which a normal mode choke coil 53, a common mode choke coil 55, and the like are mounted. The first filter circuit board 31 and the second filter circuit board 33 are electrically connected to each other, and are housed in an inverter housing 7 in a state of being overlapped with each other with a plate-like resin member 35 therebetween.SELECTED DRAWING: Figure 1

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.